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/*
* Copyright (C) 1997-1999 Matt Newman <[email protected]>
* some modifications:
* Copyright (C) 2000 Ajuba Solutions
* Copyright (C) 2002 ActiveState Corporation
* Copyright (C) 2004 Starfish Systems
* Copyright (C) 2023 Brian O'Hagan
*
* TLS (aka SSL) Channel - can be layered on any bi-directional
* Tcl_Channel (Note: Requires Trf Core Patch)
*
* This was built (almost) from scratch based upon observation of
* OpenSSL 0.9.2B
*
* Addition credit is due for Andreas Kupries ([email protected]), for
* providing the Tcl_ReplaceChannel mechanism and working closely with me
* to enhance it to support full fileevent semantics.
*
* Also work done by the follow people provided the impetus to do this "right":
* tclSSL (Colin McCormack, Shared Technology)
* SSLtcl (Peter Antman)
*
*/
#include "tlsInt.h"
#include "tclOpts.h"
#include <stdio.h>
#include <stdlib.h>
#include <openssl/rsa.h>
#include <openssl/safestack.h>
/* Min OpenSSL version */
#if OPENSSL_VERSION_NUMBER < 0x10101000L
#error "Only OpenSSL v1.1.1 or later is supported"
#endif
/*
* External functions
*/
/*
* Forward declarations
*/
#define F2N( key, dsp) \
(((key) == NULL) ? (char *) NULL : \
Tcl_TranslateFileName(interp, (key), (dsp)))
#define REASON() ERR_reason_error_string(ERR_get_error())
static void InfoCallback(const SSL *ssl, int where, int ret);
static Tcl_ObjCmdProc CiphersObjCmd;
static Tcl_ObjCmdProc HandshakeObjCmd;
static Tcl_ObjCmdProc ImportObjCmd;
static Tcl_ObjCmdProc StatusObjCmd;
static Tcl_ObjCmdProc VersionObjCmd;
static Tcl_ObjCmdProc MiscObjCmd;
static Tcl_ObjCmdProc UnimportObjCmd;
static SSL_CTX *CTX_Init(State *statePtr, int isServer, int proto, char *key,
char *certfile, unsigned char *key_asn1, unsigned char *cert_asn1,
int key_asn1_len, int cert_asn1_len, char *CAdir, char *CAfile,
char *ciphers, char *DHparams);
int key_asn1_len, int cert_asn1_len, char *CApath, char *CAfile,
char *ciphers, char *ciphersuites, int level, char *DHparams);
static int TlsLibInit(int uninitialize);
#define TLS_PROTO_SSL2 0x01
#define TLS_PROTO_SSL3 0x02
#define TLS_PROTO_TLS1 0x04
#define TLS_PROTO_TLS1_1 0x08
#define TLS_PROTO_TLS1_2 0x10
#define TLS_PROTO_TLS1_3 0x20
#define ENABLED(flag, mask) (((flag) & (mask)) == (mask))
/*
* Static data structures
*/
#define SSLKEYLOGFILE "SSLKEYLOGFILE"
#ifndef OPENSSL_NO_DH
#include "dh_params.h"
#endif
/*
* We lose the tcl password callback when we use the RSA BSAFE SSL-C 1.1.2
* libraries instead of the current OpenSSL libraries.
*/
#ifdef BSAFE
#define PRE_OPENSSL_0_9_4 1
#endif
/*
* Pre OpenSSL 0.9.4 Compat
*/
#ifndef STACK_OF
#define STACK_OF(x) STACK
#define sk_SSL_CIPHER_num(sk) sk_num((sk))
#define sk_SSL_CIPHER_value( sk, index) (SSL_CIPHER*)sk_value((sk), (index))
#endif
/*
* Thread-Safe TLS Code
*/
#ifdef TCL_THREADS
#define OPENSSL_THREAD_DEFINES
#include <openssl/opensslconf.h>
#ifdef OPENSSL_THREADS
#include <openssl/crypto.h>
#include <openssl/ssl.h>
/*
* Threaded operation requires locking callbacks
* Based from /crypto/cryptlib.c of OpenSSL and NSOpenSSL.
*/
static Tcl_Mutex *locks = NULL;
static int locksCount = 0;
static Tcl_Mutex init_mx;
void CryptoThreadLockCallback(int mode, int n, const char *file, int line) {
if (mode & CRYPTO_LOCK) {
/* This debugging is turned off by default -- it's too noisy. */
/* dprintf("Called to lock (n=%i of %i)", n, locksCount); */
Tcl_MutexLock(&locks[n]);
} else {
/* dprintf("Called to unlock (n=%i of %i)", n, locksCount); */
Tcl_MutexUnlock(&locks[n]);
}
/* dprintf("Returning"); */
return;
file = file;
line = line;
}
unsigned long CryptoThreadIdCallback(void) {
unsigned long ret;
dprintf("Called");
ret = (unsigned long) Tcl_GetCurrentThread();
dprintf("Returning %lu", ret);
return(ret);
}
#endif /* OPENSSL_THREADS */
#endif /* TCL_THREADS */
/********************/
/* Callbacks */
/********************/
/*
*-------------------------------------------------------------------
*
* Eval Callback Command --
*
* Eval callback command and catch any errors
*
* Results:
* 0 = Command returned fail or eval returned TCL_ERROR
* 1 = Command returned success or eval returned TCL_OK
*
* Side effects:
* Evaluates callback command
*
*-------------------------------------------------------------------
*/
static int
EvalCallback(Tcl_Interp *interp, State *statePtr, Tcl_Obj *cmdPtr) {
int code, ok = 0;
dprintf("Called");
Tcl_Preserve((ClientData) interp);
Tcl_Preserve((ClientData) statePtr);
/* Eval callback with success for ok or return value 1, fail for error or return value 0 */
Tcl_ResetResult(interp);
code = Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL);
dprintf("EvalCallback: %d", code);
if (code == TCL_OK) {
/* Check result for return value */
Tcl_Obj *result = Tcl_GetObjResult(interp);
if (result == NULL || Tcl_GetIntFromObj(interp, result, &ok) != TCL_OK) {
ok = 1;
}
dprintf("Result: %d", ok);
} else {
/* Error - reject the certificate */
dprintf("Tcl_BackgroundError");
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
Tcl_BackgroundError(interp);
#else
Tcl_BackgroundException(interp, code);
#endif
}
Tcl_Release((ClientData) statePtr);
Tcl_Release((ClientData) interp);
return ok;
}
/*
*-------------------------------------------------------------------
*
* InfoCallback --
*
* monitors SSL connection process
* Monitors SSL connection process
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
*-------------------------------------------------------------------
*/
static void
InfoCallback(const SSL *ssl, int where, int ret)
InfoCallback(const SSL *ssl, int where, int ret) {
{
State *statePtr = (State*)SSL_get_app_data((SSL *)ssl);
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
const char *major, *minor;
char *major; char *minor;
dprintf("Called");
if (statePtr->callback == (Tcl_Obj*)NULL)
return;
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
#if 0
if (where & SSL_CB_ALERT) {
sev = SSL_alert_type_string_long(ret);
if (strcmp( sev, "fatal")==0) { /* Map to error */
Tls_Error(statePtr, SSL_ERROR(ssl, 0));
return;
}
}
#endif
if (where & SSL_CB_HANDSHAKE_START) {
major = "handshake";
minor = "start";
} else if (where & SSL_CB_HANDSHAKE_DONE) {
major = "handshake";
minor = "done";
} else {
if (where & SSL_CB_ALERT) major = "alert";
else if (where & SSL_ST_CONNECT) major = "connect";
else if (where & SSL_ST_ACCEPT) major = "accept";
else major = "unknown";
if (where & SSL_CB_READ) minor = "read";
else if (where & SSL_CB_WRITE) minor = "write";
else if (where & SSL_CB_LOOP) minor = "loop";
else if (where & SSL_CB_EXIT) minor = "exit";
else minor = "unknown";
}
/* Create command to eval with fn, chan, major, minor, message, and type args */
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("info", -1));
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( "info", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(major, -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(minor, -1));
if (where & SSL_CB_ALERT) {
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( Tcl_GetChannelName(statePtr->self), -1) );
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( major, -1) );
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( minor, -1) );
if (where & (SSL_CB_LOOP|SSL_CB_EXIT)) {
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( SSL_state_string_long(ssl), -1) );
} else if (where & SSL_CB_ALERT) {
const char *cp = (char *) SSL_alert_desc_string_long(ret);
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( cp, -1) );
} else {
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(SSL_alert_desc_string_long(ret), -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(SSL_alert_type_string_long(ret), -1));
} else {
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(SSL_state_string_long(ssl), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("info", -1));
}
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
EvalCallback(interp, statePtr, cmdPtr);
Tcl_DecrRefCount(cmdPtr);
}
/*
*-------------------------------------------------------------------
*
* MessageCallback --
*
* Monitors SSL protocol messages
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
*-------------------------------------------------------------------
*/
#ifndef OPENSSL_NO_SSL_TRACE
static void
MessageCallback(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg) {
State *statePtr = (State*)arg;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
char *ver, *type;
BIO *bio;
char buffer[15000];
buffer[0] = 0;
dprintf("Called");
if (statePtr->callback == (Tcl_Obj*)NULL)
return;
switch(version) {
#if OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(NO_SSL2) && !defined(OPENSSL_NO_SSL2)
case SSL2_VERSION:
ver = "SSLv2";
break;
#endif
#if !defined(NO_SSL3) && !defined(OPENSSL_NO_SSL3)
case SSL3_VERSION:
ver = "SSLv3";
break;
#endif
case TLS1_VERSION:
ver = "TLSv1";
break;
case TLS1_1_VERSION:
ver = "TLSv1.1";
break;
case TLS1_2_VERSION:
ver = "TLSv1.2";
break;
case TLS1_3_VERSION:
ver = "TLSv1.3";
break;
case 0:
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( SSL_state_string_long(ssl), -1) );
ver = "none";
break;
default:
ver = "unknown";
break;
}
Tcl_Preserve( (ClientData) statePtr->interp);
Tcl_Preserve( (ClientData) statePtr);
Tcl_IncrRefCount( cmdPtr);
(void) Tcl_EvalObjEx(statePtr->interp, cmdPtr, TCL_EVAL_GLOBAL);
switch (content_type) {
case SSL3_RT_HEADER:
type = "Header";
break;
case SSL3_RT_INNER_CONTENT_TYPE:
type = "Inner Content Type";
break;
case SSL3_RT_CHANGE_CIPHER_SPEC:
type = "Change Cipher";
break;
case SSL3_RT_ALERT:
type = "Alert";
break;
case SSL3_RT_HANDSHAKE:
type = "Handshake";
break;
case SSL3_RT_APPLICATION_DATA:
type = "App Data";
break;
#if OPENSSL_VERSION_NUMBER < 0x30000000L
case DTLS1_RT_HEARTBEAT:
type = "Heartbeat";
break;
#endif
default:
type = "unknown";
}
/* Needs compile time option "enable-ssl-trace". */
if ((bio = BIO_new(BIO_s_mem())) != NULL) {
int n;
SSL_trace(write_p, version, content_type, buf, len, ssl, (void *)bio);
n = BIO_read(bio, buffer, BIO_pending(bio) < 15000 ? BIO_pending(bio) : 14999);
n = (n<0) ? 0 : n;
buffer[n] = 0;
(void)BIO_flush(bio);
Tcl_DecrRefCount( cmdPtr);
Tcl_Release( (ClientData) statePtr);
Tcl_Release( (ClientData) statePtr->interp);
BIO_free(bio);
}
/* Create command to eval with fn, chan, direction, version, type, and message args */
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("message", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(write_p ? "Sent" : "Received", -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(ver, -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(type, -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(buffer, -1));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
EvalCallback(interp, statePtr, cmdPtr);
Tcl_DecrRefCount(cmdPtr);
}
#endif
/*
*-------------------------------------------------------------------
*
* VerifyCallback --
*
* Monitors SSL certificate validation process.
* This is called whenever a certificate is inspected
* or decided invalid.
* Monitors SSL certificate validation process. Used to control the
* behavior when the SSL_VERIFY_PEER flag is set. This is called
* whenever a certificate is inspected or decided invalid. Called for
* each certificate in the cert chain.
*
* Checks:
* certificate chain is checked starting with the deepest nesting level
* (the root CA certificate) and worked upward to the peer's certificate.
* All signatures are valid, current time is within first and last validity time.
* Check that the certificate is issued by the issuer certificate issuer.
* Check the revocation status for each certificate.
* Check the validity of the given CRL and the cert revocation status.
* Check the policies of all the certificates
*
* Args
* preverify_ok indicates whether the certificate verification passed (1) or not (0)
*
* Results:
* A callback bound to the socket may return one of:
* 0 - the certificate is deemed invalid
* 1 - the certificate is deemed valid
* 0 - the certificate is deemed invalid, send verification
* failure alert to peer, and terminate handshake.
* 1 - the certificate is deemed valid, continue with handshake.
* empty string - no change to certificate validation
*
* Side effects:
* The err field of the currently operative State is set
* to a string describing the SSL negotiation failure reason
*
*-------------------------------------------------------------------
*/
static int
VerifyCallback(int ok, X509_STORE_CTX *ctx)
VerifyCallback(int ok, X509_STORE_CTX *ctx) {
{
Tcl_Obj *cmdPtr, *result;
Tcl_Obj *cmdPtr;
char *errStr, *string;
Tcl_Size length;
SSL *ssl = (SSL*)X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
X509 *cert = X509_STORE_CTX_get_current_cert(ctx);
State *statePtr = (State*)SSL_get_app_data(ssl);
Tcl_Interp *interp = statePtr->interp;
int depth = X509_STORE_CTX_get_error_depth(ctx);
int err = X509_STORE_CTX_get_error(ctx);
dprintf("Verify: %d", ok);
dprintf("Called");
dprintf("VerifyCallback: %d", ok);
if (!ok) {
errStr = (char*)X509_verify_cert_error_string(err);
} else {
errStr = (char *)0;
}
if (statePtr->callback == (Tcl_Obj*)NULL) {
if (statePtr->vcmd == (Tcl_Obj*)NULL) {
/* Use ok value if verification is required */
if (statePtr->vflags & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
return ok;
} else {
return 1;
}
} else if (cert == NULL || ssl == NULL) {
return 0;
}
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( "verify", -1));
dprintf("VerifyCallback: eval callback");
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( Tcl_GetChannelName(statePtr->self), -1) );
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
/* Create command to eval with fn, chan, depth, cert info list, status, and error args */
cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
Tcl_NewIntObj( depth) );
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tls_NewX509Obj( statePtr->interp, cert) );
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewIntObj( ok) );
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("verify", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewIntObj(depth));
Tcl_ListObjAppendElement(interp, cmdPtr, Tls_NewX509Obj(interp, cert));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewIntObj(ok));
Tcl_ListObjAppendElement( statePtr->interp, cmdPtr,
Tcl_NewStringObj( errStr ? errStr : "", -1) );
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj((char*)X509_verify_cert_error_string(err), -1));
Tcl_Preserve( (ClientData) statePtr->interp);
Tcl_Preserve( (ClientData) statePtr);
statePtr->flags |= TLS_TCL_CALLBACK;
/* Prevent I/O while callback is in progress */
/* statePtr->flags |= TLS_TCL_CALLBACK; */
/* Eval callback command */
Tcl_IncrRefCount( cmdPtr);
if (Tcl_EvalObjEx(statePtr->interp, cmdPtr, TCL_EVAL_GLOBAL) != TCL_OK) {
/* It got an error - reject the certificate. */
Tcl_BackgroundError( statePtr->interp);
ok = EvalCallback(interp, statePtr, cmdPtr);
ok = 0;
} else {
result = Tcl_GetObjResult(statePtr->interp);
string = Tcl_GetStringFromObj(result, &length);
/* An empty result leaves verification unchanged. */
if (string != NULL && length > 0) {
if (Tcl_GetIntFromObj(statePtr->interp, result, &ok) != TCL_OK) {
Tcl_BackgroundError(statePtr->interp);
ok = 0;
}
}
}
Tcl_DecrRefCount( cmdPtr);
statePtr->flags &= ~(TLS_TCL_CALLBACK);
dprintf("VerifyCallback: command result = %d", ok);
Tcl_Release( (ClientData) statePtr);
Tcl_Release( (ClientData) statePtr->interp);
/* statePtr->flags &= ~(TLS_TCL_CALLBACK); */
return(ok); /* By default, leave verification unchanged. */
}
/*
*-------------------------------------------------------------------
*
* Tls_Error --
*
* Calls callback with $fd and $msg - so the callback can decide
* Calls callback with list of errors.
* what to do with errors.
*
* Side effects:
* The err field of the currently operative State is set
* to a string describing the SSL negotiation failure reason
*
*-------------------------------------------------------------------
*/
void
Tls_Error(State *statePtr, char *msg)
Tls_Error(State *statePtr, char *msg) {
{
Tcl_Obj *cmdPtr;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr, *listPtr;
unsigned long err;
statePtr->err = msg;
dprintf("Called");
if (msg && *msg) {
Tcl_SetErrorCode(statePtr->interp, "SSL", msg, (char *)NULL);
} else {
msg = Tcl_GetString(Tcl_GetObjResult(statePtr->interp));
}
statePtr->err = msg;
if (statePtr->callback == (Tcl_Obj*)NULL) {
if (statePtr->callback == (Tcl_Obj*)NULL)
char buf[BUFSIZ];
sprintf(buf, "SSL channel \"%s\": error: %s",
Tcl_GetChannelName(statePtr->self), msg);
Tcl_SetResult( statePtr->interp, buf, TCL_VOLATILE);
Tcl_BackgroundError( statePtr->interp);
return;
}
/* Create command to eval with fn, chan, and message args */
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
Tcl_NewStringObj("error", -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("error", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
if (msg != NULL) {
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(msg, -1));
} else if ((msg = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), (Tcl_Size *) NULL)) != NULL) {
Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(msg, -1));
} else {
listPtr = Tcl_NewListObj(0, NULL);
while ((err = ERR_get_error()) != 0) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj(ERR_reason_error_string(err), -1));
}
Tcl_ListObjAppendElement(interp, cmdPtr, listPtr);
Tcl_NewStringObj(msg, -1));
}
Tcl_Preserve((ClientData) statePtr->interp);
Tcl_Preserve((ClientData) statePtr);
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
if (Tcl_EvalObjEx(statePtr->interp, cmdPtr, TCL_EVAL_GLOBAL) != TCL_OK) {
Tcl_BackgroundError(statePtr->interp);
EvalCallback(interp, statePtr, cmdPtr);
Tcl_DecrRefCount(cmdPtr);
}
Tcl_DecrRefCount(cmdPtr);
Tcl_Release((ClientData) statePtr);
Tcl_Release((ClientData) statePtr->interp);
/*
*-------------------------------------------------------------------
*
* KeyLogCallback --
*
* Write received key data to log file.
*
* Side effects:
* none
*
*-------------------------------------------------------------------
*/
void KeyLogCallback(const SSL *ssl, const char *line) {
char *str = getenv(SSLKEYLOGFILE);
FILE *fd;
dprintf("Called");
if (str) {
fd = fopen(str, "a");
fprintf(fd, "%s\n",line);
fclose(fd);
}
}
/*
*-------------------------------------------------------------------
*
* PasswordCallback --
*
* Called when a password is needed to unpack RSA and PEM keys.
* Evals any bound password script and returns the result as
* the password string.
* Called when a password for a private key loading/storing a PEM
* certificate with encryption. Evals callback script and returns
* the result as the password string in buf.
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
* Returns:
* Password size in bytes or -1 for an error.
*
*-------------------------------------------------------------------
*/
#ifdef PRE_OPENSSL_0_9_4
/*
* No way to handle user-data therefore no way without a global
* variable to access the Tcl interpreter.
*/
static int
PasswordCallback(char *buf, int size, int verify)
PasswordCallback(char *buf, int size, int rwflag, void *udata) {
{
return -1;
buf = buf;
size = size;
verify = verify;
}
#else
static int
PasswordCallback(char *buf, int size, int verify, void *udata)
{
State *statePtr = (State *) udata;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
int result;
int code;
dprintf("Called");
/* If no callback, use default callback */
if (statePtr->password == NULL) {
if (Tcl_EvalEx(interp, "tls::password", -1, TCL_EVAL_GLOBAL)
if (Tcl_EvalEx(interp, "tls::password", -1, TCL_EVAL_GLOBAL) == TCL_OK) {
== TCL_OK) {
char *ret = (char *) Tcl_GetStringResult(interp);
strncpy(buf, ret, (size_t) size);
return (int)strlen(ret);
} else {
return -1;
}
}
/* Create command to eval with fn, rwflag, and size args */
cmdPtr = Tcl_DuplicateObj(statePtr->password);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("password", -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewIntObj(rwflag));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewIntObj(size));
Tcl_Preserve((ClientData) statePtr->interp);
Tcl_Preserve((ClientData) interp);
Tcl_Preserve((ClientData) statePtr);
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
result = Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL);
if (result != TCL_OK) {
Tcl_BackgroundError(statePtr->interp);
code = Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL);
if (code != TCL_OK) {
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
Tcl_BackgroundError(interp);
#else
Tcl_BackgroundException(interp, code);
#endif
}
Tcl_DecrRefCount(cmdPtr);
Tcl_Release((ClientData) statePtr);
Tcl_Release((ClientData) statePtr->interp);
/* If successful, pass back password string and truncate if too long */
if (result == TCL_OK) {
char *ret = (char *) Tcl_GetStringResult(interp);
strncpy(buf, ret, (size_t) size);
return (int)strlen(ret);
} else {
if (code == TCL_OK) {
Tcl_Size len;
char *ret = (char *) Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &len);
if (len > (Tcl_Size) size-1) {
len = (Tcl_Size) size-1;
}
strncpy(buf, ret, (size_t) len);
buf[len] = '\0';
Tcl_Release((ClientData) interp);
return((int) len);
}
Tcl_Release((ClientData) interp);
return -1;
}
verify = verify;
/*
*-------------------------------------------------------------------
*
* Session Callback for Clients --
*
* Called when a new session is added to the cache. In TLS 1.3
* this may be received multiple times after the handshake. For
* earlier versions, this will be received during the handshake.
* This is the preferred way to obtain a resumable session.
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
* Return codes:
* 0 = error where session will be immediately removed from the internal cache.
* 1 = success where app retains session in session cache, and must call SSL_SESSION_free() when done.
*
*-------------------------------------------------------------------
*/
static int
SessionCallback(SSL *ssl, SSL_SESSION *session) {
State *statePtr = (State*)SSL_get_app_data((SSL *)ssl);
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
const unsigned char *ticket;
const unsigned char *session_id;
size_t len2;
unsigned int ulen;
dprintf("Called");
if (statePtr->callback == (Tcl_Obj*)NULL) {
return SSL_TLSEXT_ERR_OK;
} else if (ssl == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
/* Create command to eval with fn, chan, session id, session ticket, and lifetime args */
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("session", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
/* Session id */
session_id = SSL_SESSION_get_id(session, &ulen);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewByteArrayObj(session_id, (Tcl_Size) ulen));
/* Session ticket */
SSL_SESSION_get0_ticket(session, &ticket, &len2);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewByteArrayObj(ticket, (Tcl_Size) len2));
/* Lifetime - number of seconds */
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewLongObj((long) SSL_SESSION_get_ticket_lifetime_hint(session)));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
EvalCallback(interp, statePtr, cmdPtr);
Tcl_DecrRefCount(cmdPtr);
return 0;
}
/*
*-------------------------------------------------------------------
*
* ALPN Callback for Servers and NPN Callback for Clients --
*
* Perform protocol (http/1.1, h2, h3, etc.) selection for the
* incoming connection. Called after Hello and server callbacks.
* Where 'out' is selected protocol and 'in' is the peer advertised list.
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
* Return codes:
* SSL_TLSEXT_ERR_OK: ALPN protocol selected. The connection continues.
* SSL_TLSEXT_ERR_ALERT_FATAL: There was no overlap between the client's
* supplied list and the server configuration. The connection will be aborted.
* SSL_TLSEXT_ERR_NOACK: ALPN protocol not selected, e.g., because no ALPN
* protocols are configured for this connection. The connection continues.
*
*-------------------------------------------------------------------
*/
static int
ALPNCallback(SSL *ssl, const unsigned char **out, unsigned char *outlen,
const unsigned char *in, unsigned int inlen, void *arg) {
State *statePtr = (State*)arg;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
int code, res;
dprintf("Called");
if (ssl == NULL || arg == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
/* Select protocol */
if (SSL_select_next_proto((unsigned char **) out, outlen, statePtr->protos, statePtr->protos_len,
in, inlen) == OPENSSL_NPN_NEGOTIATED) {
/* Match found */
res = SSL_TLSEXT_ERR_OK;
} else {
/* OPENSSL_NPN_NO_OVERLAP = No overlap, so use first item from client protocol list */
res = SSL_TLSEXT_ERR_NOACK;
}
if (statePtr->vcmd == (Tcl_Obj*)NULL) {
return res;
}
/* Create command to eval with fn, chan, depth, cert info list, status, and error args */
cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("alpn", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj((const char *) *out, -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewBooleanObj(res == SSL_TLSEXT_ERR_OK));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
if ((code = EvalCallback(interp, statePtr, cmdPtr)) > 1) {
res = SSL_TLSEXT_ERR_NOACK;
} else if (code == 1) {
res = SSL_TLSEXT_ERR_OK;
} else {
res = SSL_TLSEXT_ERR_ALERT_FATAL;
}
Tcl_DecrRefCount(cmdPtr);
return res;
}
/*
*-------------------------------------------------------------------
*
* Advertise Protocols Callback for Next Protocol Negotiation (NPN) in ServerHello --
*
* called when a TLS server needs a list of supported protocols for Next
* Protocol Negotiation.
*
* Results:
* None
*
* Side effects:
*
* Return codes:
* SSL_TLSEXT_ERR_OK: NPN protocol selected. The connection continues.
* SSL_TLSEXT_ERR_NOACK: NPN protocol not selected. The connection continues.
*
*-------------------------------------------------------------------
*/
#ifdef USE_NPN
static int
NPNCallback(const SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg) {
State *statePtr = (State*)arg;
dprintf("Called");
if (ssl == NULL || arg == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
/* Set protocols list */
if (statePtr->protos != NULL) {
*out = statePtr->protos;
*outlen = statePtr->protos_len;
} else {
*out = NULL;
*outlen = 0;
return SSL_TLSEXT_ERR_NOACK;
}
return SSL_TLSEXT_ERR_OK;
}
#endif
/*
*-------------------------------------------------------------------
*
* SNI Callback for Servers --
*
* Perform server-side SNI hostname selection after receiving SNI extension
* in Client Hello. Called after hello callback but before ALPN callback.
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
* Return codes:
* SSL_TLSEXT_ERR_OK: SNI hostname is accepted. The connection continues.
* SSL_TLSEXT_ERR_ALERT_FATAL: SNI hostname is not accepted. The connection
* is aborted. Default for alert is SSL_AD_UNRECOGNIZED_NAME.
* SSL_TLSEXT_ERR_ALERT_WARNING: SNI hostname is not accepted, warning alert
* sent (not supported in TLSv1.3). The connection continues.
* SSL_TLSEXT_ERR_NOACK: SNI hostname is not accepted and not acknowledged,
* e.g. if SNI has not been configured. The connection continues.
*
*-------------------------------------------------------------------
*/
static int
SNICallback(const SSL *ssl, int *alert, void *arg) {
State *statePtr = (State*)arg;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
int code, res;
const char *servername = NULL;
dprintf("Called");
if (ssl == NULL || arg == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
/* Only works for TLS 1.2 and earlier */
servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
if (!servername || servername[0] == '\0') {
return SSL_TLSEXT_ERR_NOACK;
}
if (statePtr->vcmd == (Tcl_Obj*)NULL) {
return SSL_TLSEXT_ERR_OK;
}
/* Create command to eval with fn, chan, and server name args */
cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("sni", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(servername , -1));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
if ((code = EvalCallback(interp, statePtr, cmdPtr)) > 1) {
res = SSL_TLSEXT_ERR_ALERT_WARNING;
*alert = SSL_AD_UNRECOGNIZED_NAME; /* Not supported by TLS 1.3 */
} else if (code == 1) {
res = SSL_TLSEXT_ERR_OK;
} else {
res = SSL_TLSEXT_ERR_ALERT_FATAL;
*alert = SSL_AD_UNRECOGNIZED_NAME; /* Not supported by TLS 1.3 */
}
Tcl_DecrRefCount(cmdPtr);
return res;
}
/*
*-------------------------------------------------------------------
*
* ClientHello Handshake Callback for Servers --
*
* Used by server to examine the server name indication (SNI) extension
* provided by the client in order to select an appropriate certificate to
* present, and make other configuration adjustments relevant to that server
* name and its configuration. This includes swapping out the associated
* SSL_CTX pointer, modifying the server's list of permitted TLS versions,
* changing the server's cipher list in response to the client's cipher list, etc.
* Called before SNI and ALPN callbacks.
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
* Return codes:
* SSL_CLIENT_HELLO_RETRY: suspend the handshake, and the handshake function will return immediately
* SSL_CLIENT_HELLO_ERROR: failure, terminate connection. Set alert to error code.
* SSL_CLIENT_HELLO_SUCCESS: success
*
*-------------------------------------------------------------------
*/
static int
HelloCallback(SSL *ssl, int *alert, void *arg) {
State *statePtr = (State*)arg;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
int code, res;
const char *servername;
const unsigned char *p;
size_t len, remaining;
dprintf("Called");
if (statePtr->vcmd == (Tcl_Obj*)NULL) {
return SSL_CLIENT_HELLO_SUCCESS;
} else if (ssl == (const SSL *)NULL || arg == (void *)NULL) {
return SSL_CLIENT_HELLO_ERROR;
}
/* Get names */
if (!SSL_client_hello_get0_ext(ssl, TLSEXT_TYPE_server_name, &p, &remaining) || remaining <= 2) {
*alert = SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER;
return SSL_CLIENT_HELLO_ERROR;
}
/* Extract the length of the supplied list of names. */
len = (*(p++) << 8);
len += *(p++);
if (len + 2 != remaining) {
*alert = SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER;
return SSL_CLIENT_HELLO_ERROR;
}
remaining = len;
/* The list in practice only has a single element, so we only consider the first one. */
if (remaining == 0 || *p++ != TLSEXT_NAMETYPE_host_name) {
*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
return SSL_CLIENT_HELLO_ERROR;
}
remaining--;
/* Now we can finally pull out the byte array with the actual hostname. */
if (remaining <= 2) {
*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
return SSL_CLIENT_HELLO_ERROR;
}
len = (*(p++) << 8);
len += *(p++);
if (len + 2 > remaining) {
*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
return SSL_CLIENT_HELLO_ERROR;
}
remaining = len;
servername = (const char *)p;
/* Create command to eval with fn, chan, and server name args */
cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("hello", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(servername, (Tcl_Size) len));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
if ((code = EvalCallback(interp, statePtr, cmdPtr)) > 1) {
res = SSL_CLIENT_HELLO_RETRY;
*alert = SSL_R_TLSV1_ALERT_USER_CANCELLED;
} else if (code == 1) {
res = SSL_CLIENT_HELLO_SUCCESS;
} else {
res = SSL_CLIENT_HELLO_ERROR;
*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
}
Tcl_DecrRefCount(cmdPtr);
return res;
}
/********************/
/* Commands */
/********************/
/*
*-------------------------------------------------------------------
*
* CiphersObjCmd -- list available ciphers
*
* This procedure is invoked to process the "tls::ciphers" command
* to list available ciphers, based upon protocol selected.
*
* Results:
* A standard Tcl result list.
*
* Side effects:
* constructs and destroys SSL context (CTX)
*
*-------------------------------------------------------------------
*/
static int
CiphersObjCmd(
TCL_UNUSED(void *),
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
static const char *protocols[] = {
"ssl2", "ssl3", "tls1", "tls1.1", "tls1.2", "tls1.3", NULL
};
enum protocol {
TLS_SSL2, TLS_SSL3, TLS_TLS1, TLS_TLS1_1, TLS_TLS1_2, TLS_TLS1_3, TLS_NONE
};
static int
CiphersObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
Tcl_Obj *objPtr;
Tcl_Obj *objPtr = NULL;
SSL_CTX *ctx = NULL;
SSL *ssl = NULL;
STACK_OF(SSL_CIPHER) *sk;
char *cp, buf[BUFSIZ];
int index, verbose = 0;
int index, verbose = 0, use_supported = 0;
const SSL_METHOD *method;
(void) clientData;
dprintf("Called");
if (objc < 2 || objc > 3) {
Tcl_WrongNumArgs(interp, 1, objv, "protocol ?verbose?");
if ((objc < 2) || (objc > 4)) {
Tcl_WrongNumArgs(interp, 1, objv, "protocol ?verbose? ?supported?");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj( interp, objv[1], protocols, "protocol", 0,
&index) != TCL_OK) {
if (Tcl_GetIndexFromObj(interp, objv[1], protocols, "protocol", 0, &index) != TCL_OK) {
return TCL_ERROR;
}
if ((objc > 2) && Tcl_GetBooleanFromObj(interp, objv[2], &verbose) != TCL_OK) {
return TCL_ERROR;
}
if (objc > 2 && Tcl_GetBooleanFromObj( interp, objv[2],
if ((objc > 3) && Tcl_GetBooleanFromObj(interp, objv[3], &use_supported) != TCL_OK) {
&verbose) != TCL_OK) {
return TCL_ERROR;
}
ERR_clear_error();
switch ((enum protocol)index) {
case TLS_SSL2:
#if defined(NO_SSL2)
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
#if OPENSSL_VERSION_NUMBER >= 0x10100000L || defined(NO_SSL2) || defined(OPENSSL_NO_SSL2)
Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
return TCL_ERROR;
#else
ctx = SSL_CTX_new(SSLv2_method()); break;
method = SSLv2_method(); break;
#endif
case TLS_SSL3:
#if defined(NO_SSL3)
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
#if defined(NO_SSL3) || defined(OPENSSL_NO_SSL3) || defined(OPENSSL_NO_SSL3_METHOD)
Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
return TCL_ERROR;
#else
ctx = SSL_CTX_new(SSLv3_method()); break;
method = SSLv3_method(); break;
#endif
case TLS_TLS1:
#if defined(NO_TLS1)
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
#if defined(NO_TLS1) || defined(OPENSSL_NO_TLS1) || defined(OPENSSL_NO_TLS1_METHOD)
Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
return TCL_ERROR;
#else
ctx = SSL_CTX_new(TLSv1_method()); break;
method = TLSv1_method(); break;
#endif
case TLS_TLS1_1:
#if defined(NO_TLS1_1)
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
#if defined(NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1_METHOD)
Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
return TCL_ERROR;
#else
ctx = SSL_CTX_new(TLSv1_1_method()); break;
method = TLSv1_1_method(); break;
#endif
case TLS_TLS1_2:
#if defined(NO_TLS1_2)
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
#if defined(NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2_METHOD)
Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
return TCL_ERROR;
#else
ctx = SSL_CTX_new(TLSv1_2_method()); break;
method = TLSv1_2_method(); break;
#endif
case TLS_TLS1_3:
#if defined(NO_TLS1_3)
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
#if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3)
Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
return TCL_ERROR;
#else
ctx = SSL_CTX_new(TLS_method()); break;
method = TLS_method();
SSL_CTX_set_min_proto_version (ctx, TLS1_3_VERSION);
SSL_CTX_set_max_proto_version (ctx, TLS1_3_VERSION);
break;
#endif
default:
method = TLS_method();
break;
}
ctx = SSL_CTX_new(method);
if (ctx == NULL) {
Tcl_AppendResult(interp, REASON(), (char *) NULL);
Tcl_AppendResult(interp, GET_ERR_REASON(), NULL);
return TCL_ERROR;
}
ssl = SSL_new(ctx);
if (ssl == NULL) {
Tcl_AppendResult(interp, REASON(), (char *) NULL);
Tcl_AppendResult(interp, GET_ERR_REASON(), NULL);
SSL_CTX_free(ctx);
return TCL_ERROR;
}
objPtr = Tcl_NewListObj( 0, NULL);
/* Use list and order as would be sent in a ClientHello or all available ciphers */
if (use_supported) {
sk = SSL_get1_supported_ciphers(ssl);
} else {
sk = SSL_get_ciphers(ssl);
}
if (sk != NULL) {
if (!verbose) {
objPtr = Tcl_NewListObj(0, NULL);
for (index = 0; ; index++) {
cp = (char*)SSL_get_cipher_list( ssl, index);
for (int i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
const SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, i);
if (c == NULL) continue;
/* cipher name or (NONE) */
cp = SSL_CIPHER_get_name(c);
if (cp == NULL) break;
Tcl_ListObjAppendElement( interp, objPtr,
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(cp, -1));
Tcl_NewStringObj( cp, -1) );
}
} else {
objPtr = Tcl_NewStringObj("",0);
for (int i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
sk = SSL_get_ciphers(ssl);
const SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, i);
if (c == NULL) continue;
for (index = 0; index < sk_SSL_CIPHER_num(sk); index++) {
size_t i;
SSL_CIPHER_description( sk_SSL_CIPHER_value( sk, index),
buf, sizeof(buf));
for (i = strlen(buf) - 1; i ; i--) {
/* textual description of the cipher */
if (SSL_CIPHER_description(c, buf, sizeof(buf)) != NULL) {
Tcl_AppendToObj(objPtr, buf, (Tcl_Size) strlen(buf));
if (buf[i] == ' ' || buf[i] == '\n' ||
buf[i] == '\r' || buf[i] == '\t') {
buf[i] = '\0';
} else {
break;
Tcl_AppendToObj(objPtr, "UNKNOWN\n", 8);
}
}
Tcl_ListObjAppendElement( interp, objPtr,
Tcl_NewStringObj( buf, -1) );
}
if (use_supported) {
sk_SSL_CIPHER_free(sk);
}
}
SSL_free(ssl);
SSL_CTX_free(ctx);
Tcl_SetObjResult(interp, objPtr);
return TCL_OK;
}
/*
*-------------------------------------------------------------------
*
* ProtocolsObjCmd -- list available protocols
*
* This procedure is invoked to process the "tls::protocols" command
* to list available protocols.
*
* Results:
* A standard Tcl result list.
*
* Side effects:
* none
*
*-------------------------------------------------------------------
*/
static int
ProtocolsObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
Tcl_Obj *objPtr;
(void) clientData;
dprintf("Called");
if (objc != 1) {
Tcl_WrongNumArgs(interp, 1, objv, "");
return TCL_ERROR;
}
ERR_clear_error();
objPtr = Tcl_NewListObj(0, NULL);
#if OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(NO_SSL2) && !defined(OPENSSL_NO_SSL2)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_SSL2], -1));
#endif
#if !defined(NO_SSL3) && !defined(OPENSSL_NO_SSL3) && !defined(OPENSSL_NO_SSL3_METHOD)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_SSL3], -1));
#endif
#if !defined(NO_TLS1) && !defined(OPENSSL_NO_TLS1) && !defined(OPENSSL_NO_TLS1_METHOD)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1], -1));
#endif
#if !defined(NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1_METHOD)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_1], -1));
#endif
#if !defined(NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2_METHOD)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_2], -1));
#endif
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_3], -1));
#endif
Tcl_SetObjResult( interp, objPtr);
return TCL_OK;
}
/*
*-------------------------------------------------------------------
|
︙ | | |
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* A standard Tcl result. 1 means handshake complete, 0 means pending.
*
* Side effects:
* May force SSL negotiation to take place.
*
*-------------------------------------------------------------------
*/
static int HandshakeObjCmd(
static int HandshakeObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
TCL_UNUSED(void *),
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Channel chan; /* The channel to set a mode on. */
State *statePtr; /* client state for ssl socket */
const char *errStr = NULL;
int ret = 1;
int err = 0;
(void) clientData;
dprintf("Called");
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "channel");
return(TCL_ERROR);
}
ERR_clear_error();
chan = Tcl_GetChannel(interp, Tcl_GetString(objv[1]), NULL);
chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], (Tcl_Size *) NULL), NULL);
if (chan == (Tcl_Channel) NULL) {
return(TCL_ERROR);
}
/*
* Make sure to operate on the topmost channel
/* Make sure to operate on the topmost channel */
*/
chan = Tcl_GetTopChannel(chan);
if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan), "\": not a TLS channel", (char *)NULL);
Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
"\": not a TLS channel", NULL);
Tcl_SetErrorCode(interp, "TLS", "HANDSHAKE", "CHANNEL", "INVALID", (char *) NULL);
return(TCL_ERROR);
}
statePtr = (State *)Tcl_GetChannelInstanceData(chan);
dprintf("Calling Tls_WaitForConnect");
ret = Tls_WaitForConnect(statePtr, &err, 1);
dprintf("Tls_WaitForConnect returned: %i", ret);
if (
ret < 0 && \
((statePtr->flags & TLS_TCL_ASYNC) && err == EAGAIN)
if (ret < 0 && ((statePtr->flags & TLS_TCL_ASYNC) && (err == EAGAIN))) {
) {
dprintf("Async set and err = EAGAIN");
ret = 0;
} else if (ret < 0) {
long result;
errStr = statePtr->err;
Tcl_ResetResult(interp);
Tcl_SetErrno(err);
if (!errStr || *errStr == 0) {
if (!errStr || (*errStr == 0)) {
errStr = Tcl_PosixError(interp);
}
Tcl_AppendResult(interp, "handshake failed: ", errStr, (char *) NULL);
if ((result = SSL_get_verify_result(statePtr->ssl)) != X509_V_OK) {
Tcl_AppendResult(interp, " due to \"", X509_verify_cert_error_string(result), "\"", (char *) NULL);
}
Tcl_SetErrorCode(interp, "TLS", "HANDSHAKE", "FAILED", (char *) NULL);
dprintf("Returning TCL_ERROR with handshake failed: %s", errStr);
return(TCL_ERROR);
} else {
if (err != 0) {
dprintf("Got an error with a completed handshake: err = %i", err);
}
ret = 1;
}
dprintf("Returning TCL_OK with data \"%i\"", ret);
Tcl_SetObjResult(interp, Tcl_NewIntObj(ret));
return(TCL_OK);
}
|
︙ | | |
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* A standard Tcl result.
*
* Side effects:
* May modify the behavior of an IO channel.
*
*-------------------------------------------------------------------
*/
static int
ImportObjCmd(
TCL_UNUSED(void *),
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
ImportObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
{
Tcl_Channel chan; /* The channel to set a mode on. */
State *statePtr; /* client state for ssl socket */
SSL_CTX *ctx = NULL;
Tcl_Obj *script = NULL;
Tcl_Obj *password = NULL;
Tcl_Obj *vcmd = NULL;
Tcl_DString upperChannelTranslation, upperChannelBlocking, upperChannelEncoding, upperChannelEOFChar;
int idx;
Tcl_Size len;
int flags = TLS_TCL_INIT;
int server = 0; /* is connection incoming or outgoing? */
char *keyfile = NULL;
char *certfile = NULL;
unsigned char *key = NULL;
Tcl_Size key_len = 0;
unsigned char *cert = NULL;
Tcl_Size cert_len = 0;
char *ciphers = NULL;
char *ciphersuites = NULL;
char *CAfile = NULL;
char *CAdir = NULL;
char *CApath = NULL;
char *DHparams = NULL;
char *model = NULL;
#ifndef OPENSSL_NO_TLSEXT
char *servername = NULL; /* hostname for Server Name Indication */
#endif
const unsigned char *session_id = NULL;
Tcl_Obj *alpn = NULL;
int ssl2 = 0, ssl3 = 0;
int tls1 = 1, tls1_1 = 1, tls1_2 = 1, tls1_3 = 1;
int proto = 0;
int verify = 0, require = 0, request = 1;
int proto = 0, level = -1;
int verify = 0, require = 0, request = 1, post_handshake = 0;
(void) clientData;
dprintf("Called");
#if defined(NO_TLS1) && defined(NO_TLS1_1) && defined(NO_TLS1_2) && defined(NO_SSL3) && !defined(NO_SSL2)
ssl2 = 1;
#endif
#if defined(NO_TLS1) && defined(NO_TLS1_1) && defined(NO_TLS1_2) && defined(NO_SSL2) && !defined(NO_SSL3)
ssl3 = 1;
#endif
#if defined(NO_TLS1)
#if defined(NO_TLS1) || defined(OPENSSL_NO_TLS1)
tls1 = 0;
#endif
#if defined(NO_TLS1_1)
#if defined(NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1)
tls1_1 = 0;
#endif
#if defined(NO_TLS1_2)
#if defined(NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2)
tls1_2 = 0;
#endif
#if defined(NO_TLS1_3)
#if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3)
tls1_3 = 0;
#endif
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "channel ?options?");
return TCL_ERROR;
}
ERR_clear_error();
chan = Tcl_GetChannel(interp, Tcl_GetString(objv[1]), NULL);
chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], (Tcl_Size *) NULL), NULL);
if (chan == (Tcl_Channel) NULL) {
return TCL_ERROR;
}
/*
* Make sure to operate on the topmost channel
/* Make sure to operate on the topmost channel */
*/
chan = Tcl_GetTopChannel(chan);
for (idx = 2; idx < objc; idx++) {
char *opt = Tcl_GetString(objv[idx]);
char *opt = Tcl_GetStringFromObj(objv[idx], (Tcl_Size *)NULL);
if (opt[0] != '-')
break;
OPTOBJ("-alpn", alpn);
OPTSTR( "-cadir", CAdir);
OPTSTR("-cadir", CApath);
OPTSTR( "-cafile", CAfile);
OPTBYTE("-cert", cert, cert_len);
OPTSTR( "-certfile", certfile);
OPTSTR( "-cipher", ciphers);
OPTSTR("-ciphers", ciphers);
OPTSTR("-ciphersuites", ciphersuites);
OPTOBJ( "-command", script);
OPTSTR( "-dhparams", DHparams);
OPTBYTE("-key", key, key_len);
OPTSTR( "-keyfile", keyfile);
OPTSTR( "-model", model);
OPTOBJ( "-password", password);
OPTBOOL( "-require", require);
OPTBOOL("-post_handshake", post_handshake);
OPTBOOL( "-request", request);
OPTBOOL("-require", require);
OPTINT("-security_level", level);
OPTBOOL( "-server", server);
#ifndef OPENSSL_NO_TLSEXT
OPTSTR( "-servername", servername);
#endif
OPTSTR("-session_id", session_id);
OPTBOOL( "-ssl2", ssl2);
OPTBOOL( "-ssl3", ssl3);
OPTBOOL( "-tls1", tls1);
OPTBOOL( "-tls1.1", tls1_1);
OPTBOOL( "-tls1.2", tls1_2);
OPTBOOL( "-tls1.3", tls1_3)
OPTBYTE("-cert", cert, cert_len);
OPTBYTE("-key", key, key_len);
OPTBOOL("-tls1.3", tls1_3);
OPTOBJ("-validatecommand", vcmd);
OPTOBJ("-vcmd", vcmd);
OPTBAD( "option", "-cadir, -cafile, -cert, -certfile, -cipher, -command, -dhparams, -key, -keyfile, -model, -password, -require, -request, -server, -servername, -ssl2, -ssl3, -tls1, -tls1.1, -tls1.2, or tls1.3");
OPTBAD("option", "-alpn, -cadir, -cafile, -cert, -certfile, -cipher, -ciphersuites, -command, -dhparams, -key, -keyfile, -model, -password, -post_handshake, -request, -require, -security_level, -server, -servername, -session_id, -ssl2, -ssl3, -tls1, -tls1.1, -tls1.2, -tls1.3, or -validatecommand");
return TCL_ERROR;
}
if (request) verify |= SSL_VERIFY_CLIENT_ONCE | SSL_VERIFY_PEER;
if (request && require) verify |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
if (request && post_handshake) verify |= SSL_VERIFY_POST_HANDSHAKE;
if (verify == 0) verify = SSL_VERIFY_NONE;
proto |= (ssl2 ? TLS_PROTO_SSL2 : 0);
proto |= (ssl3 ? TLS_PROTO_SSL3 : 0);
proto |= (tls1 ? TLS_PROTO_TLS1 : 0);
proto |= (tls1_1 ? TLS_PROTO_TLS1_1 : 0);
proto |= (tls1_2 ? TLS_PROTO_TLS1_2 : 0);
proto |= (tls1_3 ? TLS_PROTO_TLS1_3 : 0);
/* reset to NULL if blank string provided */
if (cert && !*cert) cert = NULL;
if (key && !*key) key = NULL;
if (certfile && !*certfile) certfile = NULL;
if (keyfile && !*keyfile) keyfile = NULL;
if (ciphers && !*ciphers) ciphers = NULL;
if (ciphersuites && !*ciphersuites) ciphersuites = NULL;
if (CAfile && !*CAfile) CAfile = NULL;
if (CAdir && !*CAdir) CAdir = NULL;
if (CApath && !*CApath) CApath = NULL;
if (DHparams && !*DHparams) DHparams = NULL;
/* new SSL state */
statePtr = (State *) ckalloc((unsigned) sizeof(State));
memset(statePtr, 0, sizeof(State));
statePtr->flags = flags;
|
︙ | | |
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if (password) {
(void) Tcl_GetStringFromObj(password, &len);
if (len) {
statePtr->password = password;
Tcl_IncrRefCount(statePtr->password);
}
}
/* allocate validate command */
if (vcmd) {
(void) Tcl_GetStringFromObj(vcmd, &len);
if (len) {
statePtr->vcmd = vcmd;
Tcl_IncrRefCount(statePtr->vcmd);
}
}
if (model != NULL) {
int mode;
/* Get the "model" context */
chan = Tcl_GetChannel(interp, model, &mode);
if (chan == (Tcl_Channel) NULL) {
Tls_Free((void *)statePtr);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
/*
* Make sure to operate on the topmost channel
*/
chan = Tcl_GetTopChannel(chan);
if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
Tcl_AppendResult(interp, "bad channel \"",
Tcl_GetChannelName(chan), "\": not a TLS channel", (char *)NULL);
Tls_Free((void *)statePtr);
Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
"\": not a TLS channel", NULL);
Tcl_SetErrorCode(interp, "TLS", "IMPORT", "CHANNEL", "INVALID", (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
ctx = ((State *)Tcl_GetChannelInstanceData(chan))->ctx;
} else {
if ((ctx = CTX_Init(statePtr, server, proto, keyfile, certfile, key,
if ((ctx = CTX_Init(statePtr, server, proto, keyfile, certfile, key, cert, (int) key_len,
cert, key_len, cert_len, CAdir, CAfile, ciphers,
DHparams)) == (SSL_CTX*)0) {
Tls_Free((void *)statePtr);
(int) cert_len, CApath, CAfile, ciphers, ciphersuites, level, DHparams)) == NULL) {
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
}
statePtr->ctx = ctx;
/*
|
︙ | | |
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Tcl_GetChannelOption(interp, chan, "-eofchar", &upperChannelEOFChar);
Tcl_GetChannelOption(interp, chan, "-encoding", &upperChannelEncoding);
Tcl_GetChannelOption(interp, chan, "-translation", &upperChannelTranslation);
Tcl_GetChannelOption(interp, chan, "-blocking", &upperChannelBlocking);
Tcl_SetChannelOption(interp, chan, "-translation", "binary");
Tcl_SetChannelOption(interp, chan, "-blocking", "true");
dprintf("Consuming Tcl channel %s", Tcl_GetChannelName(chan));
statePtr->self = Tcl_StackChannel(interp, Tls_ChannelType(), statePtr, (TCL_READABLE | TCL_WRITABLE), chan);
statePtr->self = Tcl_StackChannel(interp, Tls_ChannelType(), (ClientData) statePtr,
(TCL_READABLE | TCL_WRITABLE), chan);
dprintf("Created channel named %s", Tcl_GetChannelName(statePtr->self));
if (statePtr->self == (Tcl_Channel) NULL) {
/*
* No use of Tcl_EventuallyFree because no possible Tcl_Preserve.
*/
Tls_Free((void *)statePtr);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
Tcl_SetChannelOption(interp, statePtr->self, "-translation", Tcl_DStringValue(&upperChannelTranslation));
Tcl_SetChannelOption(interp, statePtr->self, "-encoding", Tcl_DStringValue(&upperChannelEncoding));
Tcl_SetChannelOption(interp, statePtr->self, "-eofchar", Tcl_DStringValue(&upperChannelEOFChar));
Tcl_SetChannelOption(interp, statePtr->self, "-blocking", Tcl_DStringValue(&upperChannelBlocking));
Tcl_DStringFree(&upperChannelTranslation);
Tcl_DStringFree(&upperChannelEncoding);
Tcl_DStringFree(&upperChannelEOFChar);
Tcl_DStringFree(&upperChannelBlocking);
/*
* SSL Initialization
*/
statePtr->ssl = SSL_new(statePtr->ctx);
if (!statePtr->ssl) {
/* SSL library error */
Tcl_AppendResult(interp, "couldn't construct ssl session: ", REASON(),
(char *) NULL);
Tls_Free((void *)statePtr);
Tcl_AppendResult(interp, "couldn't construct ssl session: ", GET_ERR_REASON(), (char *) NULL);
Tcl_SetErrorCode(interp, "TLS", "IMPORT", "INIT", "FAILED", (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
#ifndef OPENSSL_NO_TLSEXT
/* Set host server name */
if (servername) {
/* Sets the server name indication (SNI) in ClientHello extension */
/* Per RFC 6066, hostname is a ASCII encoded string, though RFC 4366 says UTF-8. */
if (!SSL_set_tlsext_host_name(statePtr->ssl, servername) && require) {
Tcl_AppendResult(interp, "setting TLS host name extension failed",
(char *) NULL);
Tls_Free((void *)statePtr);
Tcl_AppendResult(interp, "Set SNI extension failed: ", GET_ERR_REASON(), (char *) NULL);
Tcl_SetErrorCode(interp, "TLS", "IMPORT", "SNI", "FAILED", (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
/* Set hostname for peer certificate hostname verification in clients.
Don't use SSL_set1_host since it has limitations. */
if (!SSL_add1_host(statePtr->ssl, servername)) {
Tcl_AppendResult(interp, "Set DNS hostname failed: ", GET_ERR_REASON(), (char *) NULL);
Tcl_SetErrorCode(interp, "TLS", "IMPORT", "HOSTNAME", "FAILED", (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
}
#endif
/* Resume session id */
if (session_id && strlen(session_id) <= SSL_MAX_SID_CTX_LENGTH) {
/* SSL_set_session() */
if (!SSL_SESSION_set1_id_context(SSL_get_session(statePtr->ssl), session_id, (unsigned int) strlen(session_id))) {
Tcl_AppendResult(interp, "Resume session failed: ", GET_ERR_REASON(), (char *) NULL);
Tcl_SetErrorCode(interp, "TLS", "IMPORT", "SESSION", "FAILED", (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
}
/* Enable Application-Layer Protocol Negotiation. Examples are: http/1.0,
http/1.1, h2, h3, ftp, imap, pop3, xmpp-client, xmpp-server, mqtt, irc, etc. */
if (alpn) {
/* Convert a TCL list into a protocol-list in wire-format */
unsigned char *protos, *p;
unsigned int protos_len = 0;
Tcl_Size cnt, i;
int j;
Tcl_Obj **list;
if (Tcl_ListObjGetElements(interp, alpn, &cnt, &list) != TCL_OK) {
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
/* Determine the memory required for the protocol-list */
for (i = 0; i < cnt; i++) {
Tcl_GetStringFromObj(list[i], &len);
if (len > 255) {
Tcl_AppendResult(interp, "ALPN protocol names too long", (char *) NULL);
Tcl_SetErrorCode(interp, "TLS", "IMPORT", "ALPN", "FAILED", (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
protos_len += 1 + (int) len;
}
/* Build the complete protocol-list */
protos = ckalloc(protos_len);
/* protocol-lists consist of 8-bit length-prefixed, byte strings */
for (j = 0, p = protos; j < cnt; j++) {
char *str = Tcl_GetStringFromObj(list[j], &len);
*p++ = (unsigned char) len;
memcpy(p, str, (size_t) len);
p += len;
}
/* SSL_set_alpn_protos makes a copy of the protocol-list */
/* Note: This functions reverses the return value convention */
if (SSL_set_alpn_protos(statePtr->ssl, protos, protos_len)) {
Tcl_AppendResult(interp, "Set ALPN protocols failed: ", GET_ERR_REASON(), (char *) NULL);
Tcl_SetErrorCode(interp, "TLS", "IMPORT", "ALPN", "FAILED", (char *) NULL);
Tls_Free((char *) statePtr);
ckfree(protos);
return TCL_ERROR;
}
/* Store protocols list */
statePtr->protos = protos;
statePtr->protos_len = protos_len;
} else {
statePtr->protos = NULL;
statePtr->protos_len = 0;
}
/*
* SSL Callbacks
*/
SSL_set_app_data(statePtr->ssl, (void *)statePtr); /* point back to us */
SSL_set_verify(statePtr->ssl, verify, VerifyCallback);
SSL_set_info_callback(statePtr->ssl, InfoCallback);
/* Callback for observing protocol messages */
#ifndef OPENSSL_NO_SSL_TRACE
/* void SSL_CTX_set_msg_callback_arg(statePtr->ctx, (void *)statePtr);
SSL_CTX_set_info_callback(statePtr->ctx, InfoCallback);
void SSL_CTX_set_msg_callback(statePtr->ctx, MessageCallback); */
SSL_set_msg_callback_arg(statePtr->ssl, (void *)statePtr);
SSL_set_msg_callback(statePtr->ssl, MessageCallback);
#endif
/* Create Tcl_Channel BIO Handler */
statePtr->p_bio = BIO_new_tcl(statePtr, BIO_NOCLOSE);
statePtr->bio = BIO_new(BIO_f_ssl());
if (server) {
/* Server callbacks */
SSL_CTX_set_tlsext_servername_arg(statePtr->ctx, (void *)statePtr);
SSL_CTX_set_tlsext_servername_callback(statePtr->ctx, SNICallback);
SSL_CTX_set_client_hello_cb(statePtr->ctx, HelloCallback, (void *)statePtr);
if (statePtr->protos != NULL) {
SSL_CTX_set_alpn_select_cb(statePtr->ctx, ALPNCallback, (void *)statePtr);
#ifdef USE_NPN
if (tls1_2 == 0 && tls1_3 == 0) {
SSL_CTX_set_next_protos_advertised_cb(statePtr->ctx, NPNCallback, (void *)statePtr);
}
#endif
}
/* Enable server to send cert request after handshake (TLS 1.3 only) */
/* A write operation must take place for the Certificate Request to be
sent to the client, this can be done with SSL_do_handshake(). */
if (request && post_handshake && tls1_3) {
SSL_verify_client_post_handshake(statePtr->ssl);
}
/* set automatic curve selection */
SSL_set_ecdh_auto(statePtr->ssl, 1);
/* Set server mode */
statePtr->flags |= TLS_TCL_SERVER;
SSL_set_accept_state(statePtr->ssl);
} else {
/* Client callbacks */
#ifdef USE_NPN
if (statePtr->protos != NULL && tls1_2 == 0 && tls1_3 == 0) {
SSL_CTX_set_next_proto_select_cb(statePtr->ctx, ALPNCallback, (void *)statePtr);
}
#endif
/* Session caching */
SSL_CTX_set_session_cache_mode(statePtr->ctx, SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL_STORE);
SSL_CTX_sess_set_new_cb(statePtr->ctx, SessionCallback);
/* Enable post handshake Authentication extension. TLS 1.3 only, not http/2. */
if (request && post_handshake) {
SSL_set_post_handshake_auth(statePtr->ssl, 1);
}
/* Set client mode */
SSL_set_connect_state(statePtr->ssl);
}
SSL_set_bio(statePtr->ssl, statePtr->p_bio, statePtr->p_bio);
BIO_set_ssl(statePtr->bio, statePtr->ssl, BIO_NOCLOSE);
/*
* End of SSL Init
*/
dprintf("Returning %s", Tcl_GetChannelName(statePtr->self));
Tcl_SetResult(interp, (char *) Tcl_GetChannelName(statePtr->self),
TCL_VOLATILE);
Tcl_SetResult(interp, (char *) Tcl_GetChannelName(statePtr->self), TCL_VOLATILE);
return TCL_OK;
}
/*
*-------------------------------------------------------------------
*
* UnimportObjCmd --
*
* This procedure is invoked to remove the topmost channel filter.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* May modify the behavior of an IO channel.
*
*-------------------------------------------------------------------
*/
static int
UnimportObjCmd(
UnimportObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
TCL_UNUSED(void *),
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Channel chan; /* The channel to set a mode on. */
(void) clientData;
dprintf("Called");
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "channel");
return TCL_ERROR;
}
chan = Tcl_GetChannel(interp, Tcl_GetString(objv[1]), NULL);
if (chan == (Tcl_Channel) NULL) {
return TCL_ERROR;
}
/*
* Make sure to operate on the topmost channel
/* Make sure to operate on the topmost channel */
*/
chan = Tcl_GetTopChannel(chan);
if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
"\": not a TLS channel", (char *)NULL);
"\": not a TLS channel", NULL);
Tcl_SetErrorCode(interp, "TLS", "UNIMPORT", "CHANNEL", "INVALID", (char *) NULL);
return TCL_ERROR;
}
if (Tcl_UnstackChannel(interp, chan) == TCL_ERROR) {
return TCL_ERROR;
}
|
︙ | | |
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|
* A valid SSL_CTX instance or NULL.
*
* Side effects:
* constructs SSL context (CTX)
*
*-------------------------------------------------------------------
*/
static SSL_CTX *
CTX_Init(
State *statePtr,
CTX_Init(State *statePtr, int isServer, int proto, char *keyfile, char *certfile,
TCL_UNUSED(int) /* isServer */,
int proto,
char *keyfile,
char *certfile,
unsigned char *key,
unsigned char *key, unsigned char *cert, int key_len, int cert_len, char *CApath,
unsigned char *cert,
int key_len,
int cert_len,
char *CAdir,
char *CAfile,
char *CAfile, char *ciphers, char *ciphersuites, int level, char *DHparams) {
char *ciphers,
char *DHparams)
{
Tcl_Interp *interp = statePtr->interp;
SSL_CTX *ctx = NULL;
Tcl_DString ds;
Tcl_DString ds1;
int off = 0;
int off = 0, abort = 0;
int load_private_key;
const SSL_METHOD *method;
dprintf("Called");
if (!proto) {
Tcl_AppendResult(interp, "no valid protocol selected", (char *)NULL);
return (SSL_CTX *)0;
return NULL;
}
/* create SSL context */
#if defined(NO_SSL2)
#if OPENSSL_VERSION_NUMBER >= 0x10100000L || defined(NO_SSL2) || defined(OPENSSL_NO_SSL2)
if (ENABLED(proto, TLS_PROTO_SSL2)) {
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
return (SSL_CTX *)0;
Tcl_AppendResult(interp, "SSL2 protocol not supported", (char *) NULL);
return NULL;
}
#endif
#if defined(NO_SSL3)
#if defined(NO_SSL3) || defined(OPENSSL_NO_SSL3)
if (ENABLED(proto, TLS_PROTO_SSL3)) {
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
return (SSL_CTX *)0;
Tcl_AppendResult(interp, "SSL3 protocol not supported", (char *) NULL);
return NULL;
}
#endif
#if defined(NO_TLS1)
#if defined(NO_TLS1) || defined(OPENSSL_NO_TLS1)
if (ENABLED(proto, TLS_PROTO_TLS1)) {
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
return (SSL_CTX *)0;
Tcl_AppendResult(interp, "TLS 1.0 protocol not supported", (char *) NULL);
return NULL;
}
#endif
#if defined(NO_TLS1_1)
#if defined(NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1)
if (ENABLED(proto, TLS_PROTO_TLS1_1)) {
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
return (SSL_CTX *)0;
Tcl_AppendResult(interp, "TLS 1.1 protocol not supported", (char *) NULL);
return NULL;
}
#endif
#if defined(NO_TLS1_2)
#if defined(NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2)
if (ENABLED(proto, TLS_PROTO_TLS1_2)) {
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
return (SSL_CTX *)0;
Tcl_AppendResult(interp, "TLS 1.2 protocol not supported", (char *) NULL);
return NULL;
}
#endif
#if defined(NO_TLS1_3)
#if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3)
if (ENABLED(proto, TLS_PROTO_TLS1_3)) {
Tcl_AppendResult(interp, "protocol not supported", (char *)NULL);
return (SSL_CTX *)0;
Tcl_AppendResult(interp, "TLS 1.3 protocol not supported", (char *) NULL);
return NULL;
}
#endif
if (proto == 0) {
/* Use full range */
SSL_CTX_set_min_proto_version(ctx, 0);
SSL_CTX_set_max_proto_version(ctx, 0);
}
switch (proto) {
#if !defined(NO_SSL2)
#if OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(NO_SSL2) && !defined(OPENSSL_NO_SSL2)
case TLS_PROTO_SSL2:
method = SSLv2_method ();
method = isServer ? SSLv2_server_method() : SSLv2_client_method();
break;
#endif
#if !defined(NO_SSL3)
#if !defined(NO_SSL3) && !defined(OPENSSL_NO_SSL3) && !defined(OPENSSL_NO_SSL3_METHOD)
case TLS_PROTO_SSL3:
method = SSLv3_method ();
method = isServer ? SSLv3_server_method() : SSLv3_client_method();
break;
#endif
#if !defined(NO_TLS1)
#if !defined(NO_TLS1) && !defined(OPENSSL_NO_TLS1) && !defined(OPENSSL_NO_TLS1_METHOD)
case TLS_PROTO_TLS1:
method = TLSv1_method ();
method = isServer ? TLSv1_server_method() : TLSv1_client_method();
break;
#endif
#if !defined(NO_TLS1_1)
#if !defined(NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1_METHOD)
case TLS_PROTO_TLS1_1:
method = TLSv1_1_method ();
method = isServer ? TLSv1_1_server_method() : TLSv1_1_client_method();
break;
#endif
#if !defined(NO_TLS1_2)
#if !defined(NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2_METHOD)
case TLS_PROTO_TLS1_2:
method = TLSv1_2_method ();
method = isServer ? TLSv1_2_server_method() : TLSv1_2_client_method();
break;
#endif
#if !defined(NO_TLS1_3)
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
case TLS_PROTO_TLS1_3:
/*
* The version range is constrained below,
* after the context is created. Use the
* generic method here.
/* Use the generic method and constraint range after context is created */
*/
method = TLS_method ();
method = isServer ? TLS_server_method() : TLS_client_method();
break;
#endif
default:
#ifdef HAVE_TLS_METHOD
method = TLS_method ();
/* Negotiate highest available SSL/TLS version */
method = isServer ? TLS_server_method() : TLS_client_method();
#else
method = SSLv23_method ();
#endif
#if !defined(NO_SSL2)
#if OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(NO_SSL2) && !defined(OPENSSL_NO_SSL2)
off |= (ENABLED(proto, TLS_PROTO_SSL2) ? 0 : SSL_OP_NO_SSLv2);
#endif
#if !defined(NO_SSL3)
#if !defined(NO_SSL3) && !defined(OPENSSL_NO_SSL3)
off |= (ENABLED(proto, TLS_PROTO_SSL3) ? 0 : SSL_OP_NO_SSLv3);
#endif
#if !defined(NO_TLS1)
#if !defined(NO_TLS1) && !defined(OPENSSL_NO_TLS1)
off |= (ENABLED(proto, TLS_PROTO_TLS1) ? 0 : SSL_OP_NO_TLSv1);
#endif
#if !defined(NO_TLS1_1)
#if !defined(NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1)
off |= (ENABLED(proto, TLS_PROTO_TLS1_1) ? 0 : SSL_OP_NO_TLSv1_1);
#endif
#if !defined(NO_TLS1_2)
#if !defined(NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2)
off |= (ENABLED(proto, TLS_PROTO_TLS1_2) ? 0 : SSL_OP_NO_TLSv1_2);
#endif
#if !defined(NO_TLS1_3)
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
off |= (ENABLED(proto, TLS_PROTO_TLS1_3) ? 0 : SSL_OP_NO_TLSv1_3);
#endif
break;
}
ctx = SSL_CTX_new (method);
ERR_clear_error();
ctx = SSL_CTX_new(method);
if (!ctx) {
return(NULL);
}
if (getenv(SSLKEYLOGFILE)) {
SSL_CTX_set_keylog_callback(ctx, KeyLogCallback);
}
#if !defined(NO_TLS1_3)
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
if (proto == TLS_PROTO_TLS1_3) {
SSL_CTX_set_min_proto_version (ctx, TLS1_3_VERSION);
SSL_CTX_set_max_proto_version (ctx, TLS1_3_VERSION);
}
#endif
/* Force cipher selection order by server */
if (!isServer) {
SSL_CTX_set_options(ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
}
#if OPENSSL_VERSION_NUMBER < 0x10100000L
OpenSSL_add_all_algorithms(); /* Load ciphers and digests */
#endif
SSL_CTX_set_app_data( ctx, (void*)interp); /* remember the interpreter */
SSL_CTX_set_options( ctx, SSL_OP_ALL); /* all SSL bug workarounds */
SSL_CTX_set_options(ctx, SSL_OP_NO_COMPRESSION); /* disable compression even if supported */
SSL_CTX_set_options( ctx, off); /* all SSL bug workarounds */
SSL_CTX_set_options(ctx, off); /* disable protocol versions */
#if OPENSSL_VERSION_NUMBER < 0x10101000L
SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY); /* handle new handshakes in background. On by default in OpenSSL 1.1.1. */
#endif
SSL_CTX_sess_set_cache_size( ctx, 128);
if (ciphers != NULL)
SSL_CTX_set_cipher_list(ctx, ciphers);
/* Set user defined ciphers, cipher suites, and security level */
if ((ciphers != NULL) && !SSL_CTX_set_cipher_list(ctx, ciphers)) {
Tcl_AppendResult(interp, "Set ciphers failed: No valid ciphers", (char *) NULL);
SSL_CTX_free(ctx);
return NULL;
}
if ((ciphersuites != NULL) && !SSL_CTX_set_ciphersuites(ctx, ciphersuites)) {
Tcl_AppendResult(interp, "Set cipher suites failed: No valid ciphers", (char *) NULL);
SSL_CTX_free(ctx);
return NULL;
}
/* Set security level */
if (level > -1 && level < 6) {
/* SSL_set_security_level */
SSL_CTX_set_security_level(ctx, level);
}
/* set some callbacks */
SSL_CTX_set_default_passwd_cb(ctx, PasswordCallback);
#ifndef BSAFE
SSL_CTX_set_default_passwd_cb_userdata(ctx, (void *)statePtr);
#endif
/* read a Diffie-Hellman parameters file, or use the built-in one */
#ifdef OPENSSL_NO_DH
if (DHparams != NULL) {
Tcl_AppendResult(interp,
"DH parameter support not available", (char *) NULL);
Tcl_AppendResult(interp, "DH parameter support not available", (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
}
#else
{
DH* dh;
if (DHparams != NULL) {
BIO *bio;
Tcl_DStringInit(&ds);
bio = BIO_new_file(F2N(DHparams, &ds), "r");
if (!bio) {
Tcl_DStringFree(&ds);
Tcl_AppendResult(interp,
"Could not find DH parameters file", (char *) NULL);
Tcl_AppendResult(interp, "Could not find DH parameters file", (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
}
dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
BIO_free(bio);
Tcl_DStringFree(&ds);
if (!dh) {
Tcl_AppendResult(interp,
"Could not read DH parameters from file", (char *) NULL);
Tcl_AppendResult(interp, "Could not read DH parameters from file", (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
}
} else {
dh = get_dhParams();
}
SSL_CTX_set_tmp_dh(ctx, dh);
DH_free(dh);
} else {
/* Use well known DH parameters that have built-in support in OpenSSL */
if (!SSL_CTX_set_dh_auto(ctx, 1)) {
Tcl_AppendResult(interp, "Could not enable set DH auto: ", GET_ERR_REASON(), (char *) NULL);
SSL_CTX_free(ctx);
return NULL;
}
}
}
#endif
/* set our certificate */
load_private_key = 0;
if (certfile != NULL) {
load_private_key = 1;
Tcl_DStringInit(&ds);
if (SSL_CTX_use_certificate_file(ctx, F2N( certfile, &ds),
if (SSL_CTX_use_certificate_file(ctx, F2N(certfile, &ds), SSL_FILETYPE_PEM) <= 0) {
SSL_FILETYPE_PEM) <= 0) {
Tcl_DStringFree(&ds);
Tcl_AppendResult(interp,
"unable to set certificate file ", certfile, ": ",
REASON(), (char *) NULL);
Tcl_AppendResult(interp, "unable to set certificate file ", certfile, ": ",
GET_ERR_REASON(), (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
}
Tcl_DStringFree(&ds);
} else if (cert != NULL) {
load_private_key = 1;
if (SSL_CTX_use_certificate_ASN1(ctx, cert_len, cert) <= 0) {
Tcl_DStringFree(&ds);
Tcl_AppendResult(interp,
Tcl_AppendResult(interp, "unable to set certificate: ",
"unable to set certificate: ",
REASON(), (char *) NULL);
GET_ERR_REASON(), (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
}
} else {
certfile = (char*)X509_get_default_cert_file();
if (SSL_CTX_use_certificate_file(ctx, certfile,
if (SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM) <= 0) {
SSL_FILETYPE_PEM) <= 0) {
#if 0
Tcl_DStringFree(&ds);
Tcl_AppendResult(interp,
"unable to use default certificate file ", certfile, ": ",
REASON(), (char *) NULL);
Tcl_AppendResult(interp, "unable to use default certificate file ", certfile, ": ",
GET_ERR_REASON(), (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
#endif
}
}
/* set our private key */
if (load_private_key) {
if (keyfile == NULL && key == NULL) {
keyfile = certfile;
}
if (keyfile != NULL) {
/* get the private key associated with this certificate */
if (keyfile == NULL) {
keyfile = certfile;
}
if (SSL_CTX_use_PrivateKey_file(ctx, F2N( keyfile, &ds), SSL_FILETYPE_PEM) <= 0) {
Tcl_DStringFree(&ds);
/* flush the passphrase which might be left in the result */
Tcl_SetResult(interp, NULL, TCL_STATIC);
Tcl_AppendResult(interp,
"unable to set public key file ", keyfile, " ",
REASON(), (char *) NULL);
Tcl_AppendResult(interp, "unable to set public key file ", keyfile, " ",
GET_ERR_REASON(), (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
}
Tcl_DStringFree(&ds);
} else if (key != NULL) {
if (SSL_CTX_use_PrivateKey_ASN1(EVP_PKEY_RSA, ctx, key,key_len) <= 0) {
Tcl_DStringFree(&ds);
/* flush the passphrase which might be left in the result */
Tcl_SetResult(interp, NULL, TCL_STATIC);
Tcl_AppendResult(interp,
Tcl_AppendResult(interp, "unable to set public key: ", GET_ERR_REASON(), (char *) NULL);
"unable to set public key: ",
REASON(), (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
}
}
/* Now we know that a key and cert have been set against
* the SSL context */
if (!SSL_CTX_check_private_key(ctx)) {
Tcl_AppendResult(interp,
"private key does not match the certificate public key",
Tcl_AppendResult(interp, "private key does not match the certificate public key",
(char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
return NULL;
}
}
/* Set to use default location and file for Certificate Authority (CA) certificates. The
* verify path and store can be overridden by the SSL_CERT_DIR env var. The verify file can
* be overridden by the SSL_CERT_FILE env var. */
/* Set verification CAs */
Tcl_DStringInit(&ds);
Tcl_DStringInit(&ds1);
if (!SSL_CTX_load_verify_locations(ctx, F2N(CAfile, &ds), F2N(CAdir, &ds1)) ||
if (!SSL_CTX_set_default_verify_paths(ctx)) {
abort++;
}
/* Overrides for the CA verify path and file */
{
#if OPENSSL_VERSION_NUMBER < 0x30000000L
if (CApath != NULL || CAfile != NULL) {
Tcl_DString ds1;
if (!SSL_CTX_load_verify_locations(ctx, F2N(CAfile, &ds), F2N(CApath, &ds1))) {
!SSL_CTX_set_default_verify_paths(ctx)) {
#if 0
abort++;
}
Tcl_DStringFree(&ds);
Tcl_DStringFree(&ds1);
/* Don't currently care if this fails */
Tcl_AppendResult(interp, "SSL default verify paths: ",
REASON(), (char *) NULL);
SSL_CTX_free(ctx);
return (SSL_CTX *)0;
#endif
/* Set list of CAs to send to client when requesting a client certificate */
/* https://sourceforge.net/p/tls/bugs/57/ */
/* XXX:TODO: Let the user supply values here instead of something that exists on the filesystem */
STACK_OF(X509_NAME) *certNames = SSL_load_client_CA_file(F2N(CAfile, &ds));
if (certNames != NULL) {
SSL_CTX_set_client_CA_list(ctx, certNames);
}
Tcl_DStringFree(&ds);
}
#else
if (CApath != NULL) {
if (!SSL_CTX_load_verify_dir(ctx, F2N(CApath, &ds))) {
abort++;
}
Tcl_DStringFree(&ds);
}
/* https://sourceforge.net/p/tls/bugs/57/ */
/* XXX:TODO: Let the user supply values here instead of something that exists on the filesystem */
if ( CAfile != NULL ) {
if (!SSL_CTX_load_verify_file(ctx, F2N(CAfile, &ds))) {
abort++;
}
Tcl_DStringFree(&ds);
/* Set list of CAs to send to client when requesting a client certificate */
STACK_OF(X509_NAME) *certNames = SSL_load_client_CA_file( F2N(CAfile, &ds) );
if ( certNames != NULL ) {
SSL_CTX_set_client_CA_list(ctx, certNames );
}
Tcl_DStringFree(&ds);
}
#endif
Tcl_DStringFree(&ds);
}
Tcl_DStringFree(&ds1);
return ctx;
}
/*
*-------------------------------------------------------------------
*
* StatusObjCmd -- return certificate for connected peer.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
static int
StatusObjCmd(
StatusObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
TCL_UNUSED(void *),
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
State *statePtr;
X509 *peer;
Tcl_Obj *objPtr;
Tcl_Channel chan;
char *channelName, *ciphers;
int mode;
const unsigned char *proto;
unsigned int len;
int nid, res;
(void) clientData;
dprintf("Called");
switch (objc) {
case 2:
channelName = Tcl_GetString(objv[1]);
if (objc < 2 || objc > 3 || (objc == 3 && !strcmp(Tcl_GetString(objv[1]), "-local"))) {
break;
case 3:
if (!strcmp (Tcl_GetString (objv[1]), "-local")) {
channelName = Tcl_GetString(objv[2]);
break;
}
/* fallthrough */
default:
Tcl_WrongNumArgs(interp, 1, objv, "?-local? channel");
return TCL_ERROR;
}
/* Get channel Id */
channelName = Tcl_GetStringFromObj(objv[(objc == 2 ? 1 : 2)], (Tcl_Size *) NULL);
chan = Tcl_GetChannel(interp, channelName, &mode);
if (chan == (Tcl_Channel) NULL) {
return TCL_ERROR;
}
/*
* Make sure to operate on the topmost channel
/* Make sure to operate on the topmost channel */
*/
chan = Tcl_GetTopChannel(chan);
if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
"\": not a TLS channel", (char *)NULL);
"\": not a TLS channel", NULL);
Tcl_SetErrorCode(interp, "TLS", "STATUS", "CHANNEL", "INVALID", (char *) NULL);
return TCL_ERROR;
}
statePtr = (State *) Tcl_GetChannelInstanceData(chan);
/* Get certificate for peer or self */
if (objc == 2) {
peer = SSL_get_peer_certificate(statePtr->ssl);
} else {
peer = SSL_get_certificate(statePtr->ssl);
}
/* Get X509 certificate info */
if (peer) {
objPtr = Tls_NewX509Obj(interp, peer);
if (objc == 2) { X509_free(peer); }
if (objc == 2) {
X509_free(peer);
peer = NULL;
}
} else {
objPtr = Tcl_NewListObj(0, NULL);
}
Tcl_ListObjAppendElement (interp, objPtr,
/* Peer name */
Tcl_NewStringObj ("sbits", -1));
Tcl_ListObjAppendElement (interp, objPtr,
Tcl_NewIntObj (SSL_get_cipher_bits (statePtr->ssl, NULL)));
LAPPEND_STR(interp, objPtr, "peername", SSL_get0_peername(statePtr->ssl), -1);
LAPPEND_INT(interp, objPtr, "sbits", SSL_get_cipher_bits(statePtr->ssl, NULL));
ciphers = (char*)SSL_get_cipher(statePtr->ssl);
LAPPEND_STR(interp, objPtr, "cipher", ciphers, -1);
if (ciphers != NULL && strcmp(ciphers, "(NONE)")!=0) {
Tcl_ListObjAppendElement(interp, objPtr,
Tcl_NewStringObj("cipher", -1));
Tcl_ListObjAppendElement(interp, objPtr,
Tcl_NewStringObj(SSL_get_cipher(statePtr->ssl), -1));
/* Verify the X509 certificate presented by the peer */
LAPPEND_STR(interp, objPtr, "verifyResult",
X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)), -1);
/* Verify mode */
mode = SSL_get_verify_mode(statePtr->ssl);
if (mode && SSL_VERIFY_NONE) {
LAPPEND_STR(interp, objPtr, "verifyMode", "none", -1);
} else {
Tcl_Obj *listObjPtr = Tcl_NewListObj(0, NULL);
if (mode && SSL_VERIFY_PEER) {
Tcl_ListObjAppendElement(interp, listObjPtr, Tcl_NewStringObj("peer", -1));
}
if (mode && SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
Tcl_ListObjAppendElement(interp, listObjPtr, Tcl_NewStringObj("fail if no peer cert", -1));
}
if (mode && SSL_VERIFY_CLIENT_ONCE) {
Tcl_ListObjAppendElement(interp, listObjPtr, Tcl_NewStringObj("client once", -1));
}
if (mode && SSL_VERIFY_POST_HANDSHAKE) {
Tcl_ListObjAppendElement(interp, listObjPtr, Tcl_NewStringObj("post handshake", -1));
}
LAPPEND_OBJ(interp, objPtr, "verifyMode", listObjPtr)
}
/* Verify mode depth */
LAPPEND_INT(interp, objPtr, "verifyDepth", SSL_get_verify_depth(statePtr->ssl));
/* Report the selected protocol as a result of the negotiation */
SSL_get0_alpn_selected(statePtr->ssl, &proto, &len);
LAPPEND_STR(interp, objPtr, "alpn", (char *)proto, (Tcl_Size) len);
LAPPEND_STR(interp, objPtr, "protocol", SSL_get_version(statePtr->ssl), -1);
/* Valid for non-RSA signature and TLS 1.3 */
if (objc == 2) {
res = SSL_get_peer_signature_nid(statePtr->ssl, &nid);
} else {
res = SSL_get_signature_nid(statePtr->ssl, &nid);
}
if (!res) {nid = 0;}
LAPPEND_STR(interp, objPtr, "signatureHashAlgorithm", OBJ_nid2ln(nid), -1);
if (objc == 2) {
res = SSL_get_peer_signature_type_nid(statePtr->ssl, &nid);
} else {
res = SSL_get_signature_type_nid(statePtr->ssl, &nid);
}
if (!res) {nid = 0;}
LAPPEND_STR(interp, objPtr, "signatureType", OBJ_nid2ln(nid), -1);
Tcl_SetObjResult(interp, objPtr);
return TCL_OK;
}
/*
*-------------------------------------------------------------------
*
* ConnectionInfoObjCmd -- return connection info from OpenSSL.
*
* Results:
* A list of connection info
*
*-------------------------------------------------------------------
*/
static int ConnectionInfoObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
Tcl_Channel chan; /* The channel to set a mode on */
State *statePtr; /* client state for ssl socket */
Tcl_Obj *objPtr, *listPtr;
const SSL *ssl;
const SSL_CIPHER *cipher;
const SSL_SESSION *session;
const EVP_MD *md;
(void) clientData;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "channel");
return(TCL_ERROR);
}
chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], (Tcl_Size *)NULL), NULL);
if (chan == (Tcl_Channel) NULL) {
return(TCL_ERROR);
}
/* Make sure to operate on the topmost channel */
chan = Tcl_GetTopChannel(chan);
if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
"\": not a TLS channel", NULL);
Tcl_SetErrorCode(interp, "TLS", "CONNECTION", "CHANNEL", "INVALID", (char *) NULL);
return(TCL_ERROR);
}
objPtr = Tcl_NewListObj(0, NULL);
/* Connection info */
statePtr = (State *)Tcl_GetChannelInstanceData(chan);
ssl = statePtr->ssl;
if (ssl != NULL) {
/* connection state */
LAPPEND_STR(interp, objPtr, "state", SSL_state_string_long(ssl), -1);
/* Get SNI requested server name */
LAPPEND_STR(interp, objPtr, "servername", SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name), -1);
/* Get protocol */
LAPPEND_STR(interp, objPtr, "protocol", SSL_get_version(ssl), -1);
/* Renegotiation allowed */
LAPPEND_BOOL(interp, objPtr, "renegotiation_allowed", SSL_get_secure_renegotiation_support((SSL *) ssl));
/* Get security level */
LAPPEND_INT(interp, objPtr, "security_level", SSL_get_security_level(ssl));
/* Session info */
LAPPEND_BOOL(interp, objPtr, "session_reused", SSL_session_reused(ssl));
/* Is server info */
LAPPEND_BOOL(interp, objPtr, "is_server", SSL_is_server(ssl));
/* Is DTLS */
LAPPEND_BOOL(interp, objPtr, "is_dtls", SSL_is_dtls(ssl));
}
/* Cipher info */
cipher = SSL_get_current_cipher(ssl);
if (cipher != NULL) {
char buf[BUFSIZ] = {0};
int bits, alg_bits;
/* Cipher name */
LAPPEND_STR(interp, objPtr, "cipher", SSL_CIPHER_get_name(cipher), -1);
/* RFC name of cipher */
LAPPEND_STR(interp, objPtr, "standard_name", SSL_CIPHER_standard_name(cipher), -1);
/* OpenSSL name of cipher */
LAPPEND_STR(interp, objPtr, "openssl_name", OPENSSL_cipher_name(SSL_CIPHER_standard_name(cipher)), -1);
/* number of secret bits used for cipher */
bits = SSL_CIPHER_get_bits(cipher, &alg_bits);
LAPPEND_INT(interp, objPtr, "secret_bits", bits);
LAPPEND_INT(interp, objPtr, "algorithm_bits", alg_bits);
/* alg_bits is actual key secret bits. If use bits and secret (algorithm) bits differ,
the rest of the bits are fixed, i.e. for limited export ciphers (bits < 56) */
/* Indicates which SSL/TLS protocol version first defined the cipher */
LAPPEND_STR(interp, objPtr, "min_version", SSL_CIPHER_get_version(cipher), -1);
/* Cipher NID */
LAPPEND_STR(interp, objPtr, "cipherNID", (char *)OBJ_nid2ln(SSL_CIPHER_get_cipher_nid(cipher)), -1);
LAPPEND_STR(interp, objPtr, "digestNID", (char *)OBJ_nid2ln(SSL_CIPHER_get_digest_nid(cipher)), -1);
LAPPEND_STR(interp, objPtr, "keyExchangeNID", (char *)OBJ_nid2ln(SSL_CIPHER_get_kx_nid(cipher)), -1);
LAPPEND_STR(interp, objPtr, "authenticationNID", (char *)OBJ_nid2ln(SSL_CIPHER_get_auth_nid(cipher)), -1);
/* message authentication code - Cipher is AEAD (e.g. GCM or ChaCha20/Poly1305) or not */
/* Authenticated Encryption with associated data (AEAD) check */
LAPPEND_BOOL(interp, objPtr, "cipher_is_aead", SSL_CIPHER_is_aead(cipher));
/* Digest used during the SSL/TLS handshake when using the cipher. */
md = SSL_CIPHER_get_handshake_digest(cipher);
LAPPEND_STR(interp, objPtr, "handshake_digest", (char *)EVP_MD_name(md), -1);
/* Get OpenSSL-specific ID, not IANA ID */
LAPPEND_INT(interp, objPtr, "cipher_id", (int) SSL_CIPHER_get_id(cipher));
/* Two-byte ID used in the TLS protocol of the given cipher */
LAPPEND_INT(interp, objPtr, "protocol_id", (int) SSL_CIPHER_get_protocol_id(cipher));
/* Textual description of the cipher */
if (SSL_CIPHER_description(cipher, buf, sizeof(buf)) != NULL) {
LAPPEND_STR(interp, objPtr, "description", buf, -1);
}
}
/* Session info */
session = SSL_get_session(ssl);
if (session != NULL) {
const unsigned char *ticket;
size_t len2;
unsigned int ulen;
const unsigned char *session_id, *proto;
unsigned char buffer[SSL_MAX_MASTER_KEY_LENGTH];
/* Report the selected protocol as a result of the ALPN negotiation */
SSL_SESSION_get0_alpn_selected(session, &proto, &len2);
LAPPEND_STR(interp, objPtr, "alpn", (char *) proto, (Tcl_Size) len2);
/* Report the selected protocol as a result of the NPN negotiation */
#ifdef USE_NPN
SSL_get0_next_proto_negotiated(ssl, &proto, &ulen);
LAPPEND_STR(interp, objPtr, "npn", (char *) proto, (Tcl_Size) ulen);
#endif
/* Resumable session */
LAPPEND_BOOL(interp, objPtr, "resumable", SSL_SESSION_is_resumable(session));
/* Session start time (seconds since epoch) */
LAPPEND_LONG(interp, objPtr, "start_time", SSL_SESSION_get_time(session));
/* Timeout value - SSL_CTX_get_timeout (in seconds) */
LAPPEND_LONG(interp, objPtr, "timeout", SSL_SESSION_get_timeout(session));
/* Session id - TLSv1.2 and below only */
session_id = SSL_SESSION_get_id(session, &ulen);
LAPPEND_BARRAY(interp, objPtr, "session_id", session_id, (Tcl_Size) ulen);
/* Session context */
session_id = SSL_SESSION_get0_id_context(session, &ulen);
LAPPEND_BARRAY(interp, objPtr, "session_context", session_id, (Tcl_Size) ulen);
/* Session ticket - client only */
SSL_SESSION_get0_ticket(session, &ticket, &len2);
LAPPEND_BARRAY(interp, objPtr, "session_ticket", ticket, (Tcl_Size) len2);
/* Session ticket lifetime hint (in seconds) */
LAPPEND_LONG(interp, objPtr, "lifetime", SSL_SESSION_get_ticket_lifetime_hint(session));
/* Ticket app data */
#if OPENSSL_VERSION_NUMBER < 0x30000000L
SSL_SESSION_get0_ticket_appdata((SSL_SESSION *) session, &ticket, &len2);
LAPPEND_BARRAY(interp, objPtr, "ticket_app_data", ticket, (Tcl_Size) len2);
#endif
/* Get master key */
len2 = SSL_SESSION_get_master_key(session, buffer, SSL_MAX_MASTER_KEY_LENGTH);
LAPPEND_BARRAY(interp, objPtr, "master_key", buffer, (Tcl_Size) len2);
/* Compression id */
unsigned int id = SSL_SESSION_get_compress_id(session);
LAPPEND_STR(interp, objPtr, "compression_id", id == 1 ? "zlib" : "none", -1);
}
/* Compression info */
if (ssl != NULL) {
#ifdef HAVE_SSL_COMPRESSION
const COMP_METHOD *comp, *expn;
comp = SSL_get_current_compression(ssl);
expn = SSL_get_current_expansion(ssl);
LAPPEND_STR(interp, objPtr, "compression", comp ? SSL_COMP_get_name(comp) : "none", -1);
LAPPEND_STR(interp, objPtr, "expansion", expn ? SSL_COMP_get_name(expn) : "none", -1);
#else
LAPPEND_STR(interp, objPtr, "compression", "none", -1);
LAPPEND_STR(interp, objPtr, "expansion", "none", -1);
#endif
}
/* Server info */
{
long mode = SSL_CTX_get_session_cache_mode(statePtr->ctx);
char *msg;
if (mode & SSL_SESS_CACHE_OFF) {
msg = "off";
} else if (mode & SSL_SESS_CACHE_CLIENT) {
msg = "client";
} else if (mode & SSL_SESS_CACHE_SERVER) {
msg = "server";
} else if (mode & SSL_SESS_CACHE_BOTH) {
msg = "both";
} else {
msg = "unknown";
}
LAPPEND_STR(interp, objPtr, "session_cache_mode", msg, -1);
}
Tcl_ListObjAppendElement(interp, objPtr,
Tcl_NewStringObj("version", -1));
Tcl_ListObjAppendElement(interp, objPtr,
/* CA List */
/* IF not a server, same as SSL_get0_peer_CA_list. If server same as SSL_CTX_get_client_CA_list */
listPtr = Tcl_NewListObj(0, NULL);
STACK_OF(X509_NAME) *ca_list;
if ((ca_list = SSL_get_client_CA_list(ssl)) != NULL) {
char buffer[BUFSIZ];
for (int i = 0; i < sk_X509_NAME_num(ca_list); i++) {
X509_NAME *name = sk_X509_NAME_value(ca_list, i);
if (name) {
X509_NAME_oneline(name, buffer, BUFSIZ);
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj(buffer, -1));
Tcl_NewStringObj(SSL_get_version(statePtr->ssl), -1));
}
}
}
LAPPEND_OBJ(interp, objPtr, "caList", listPtr);
LAPPEND_INT(interp, objPtr, "caListCount", sk_X509_NAME_num(ca_list));
Tcl_SetObjResult( interp, objPtr);
return TCL_OK;
}
/*
*-------------------------------------------------------------------
*
* VersionObjCmd -- return version string from OpenSSL.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
static int
VersionObjCmd(
VersionObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
TCL_UNUSED(void *),
Tcl_Interp *interp,
TCL_UNUSED(int) /* objc */,
TCL_UNUSED(Tcl_Obj *const *) /* objv */)
{
Tcl_Obj *objPtr;
(void) clientData;
(void) objc;
(void) objv;
dprintf("Called");
objPtr = Tcl_NewStringObj(OPENSSL_VERSION_TEXT, -1);
Tcl_SetObjResult(interp, objPtr);
return TCL_OK;
}
/*
*-------------------------------------------------------------------
*
* MiscObjCmd -- misc commands
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
static int
MiscObjCmd(
TCL_UNUSED(void *),
Tcl_Interp *interp,
MiscObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
int objc,
Tcl_Obj *const objv[])
{
static const char *commands [] = { "req", NULL };
enum command { C_REQ, C_DUMMY };
int cmd;
static const char *commands [] = { "req", "strreq", NULL };
enum command { C_REQ, C_STRREQ, C_DUMMY };
Tcl_Size cmd;
int isStr;
char buffer[16384];
(void) clientData;
dprintf("Called");
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?args?");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[1], commands,
if (Tcl_GetIndexFromObj(interp, objv[1], commands, "command", 0, &cmd) != TCL_OK) {
"command", 0,&cmd) != TCL_OK) {
return TCL_ERROR;
}
ERR_clear_error();
isStr = (cmd == C_STRREQ);
switch ((enum command) cmd) {
case C_REQ: {
case C_REQ:
case C_STRREQ: {
EVP_PKEY *pkey=NULL;
X509 *cert=NULL;
X509_NAME *name=NULL;
Tcl_Obj **listv;
Tcl_Size listc,i;
Tcl_Size listc;
int i;
BIO *out=NULL;
const char *k_C="",*k_ST="",*k_L="",*k_O="",*k_OU="",*k_CN="",*k_Email="";
char *k_C="",*k_ST="",*k_L="",*k_O="",*k_OU="",*k_CN="",*k_Email="";
char *keyout,*pemout,*str;
int keysize,serial=0,days=365;
#if OPENSSL_VERSION_NUMBER < 0x30000000L
BIGNUM *bne = NULL;
RSA *rsa = NULL;
#else
EVP_PKEY_CTX *ctx = NULL;
#endif
if ((objc<5) || (objc>6)) {
Tcl_WrongNumArgs(interp, 2, objv, "keysize keyfile certfile ?info?");
return TCL_ERROR;
}
if (Tcl_GetIntFromObj(interp, objv[2], &keysize) != TCL_OK) {
return TCL_ERROR;
}
keyout=Tcl_GetString(objv[3]);
pemout=Tcl_GetString(objv[4]);
if (isStr) {
Tcl_SetVar(interp,keyout,"",0);
Tcl_SetVar(interp,pemout,"",0);
}
if (objc>=6) {
if (Tcl_ListObjGetElements(interp, objv[5],
if (Tcl_ListObjGetElements(interp, objv[5], &listc, &listv) != TCL_OK) {
&listc, &listv) != TCL_OK) {
return TCL_ERROR;
}
if ((listc%2) != 0) {
Tcl_SetResult(interp,"Information list must have even number of arguments",NULL);
return TCL_ERROR;
}
for (i=0; i<listc; i+=2) {
str=Tcl_GetString(listv[i]);
if (strcmp(str,"days")==0) {
if (Tcl_GetIntFromObj(interp,listv[i+1],&days)!=TCL_OK)
return TCL_ERROR;
} else if (strcmp(str,"serial")==0) {
if (Tcl_GetIntFromObj(interp,listv[i+1],&serial)!=TCL_OK)
return TCL_ERROR;
} else if (strcmp(str,"serial")==0) {
if (Tcl_GetIntFromObj(interp,listv[i+1],&serial)!=TCL_OK)
return TCL_ERROR;
} else if (strcmp(str,"C")==0) {
k_C=Tcl_GetString(listv[i+1]);
} else if (strcmp(str,"ST")==0) {
k_ST=Tcl_GetString(listv[i+1]);
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+
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-
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+
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+
+
+
+
+
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+
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-
-
-
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+
+
-
-
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+
-
-
|
k_Email=Tcl_GetString(listv[i+1]);
} else {
Tcl_SetResult(interp,"Unknown parameter",NULL);
return TCL_ERROR;
}
}
}
#if OPENSSL_VERSION_NUMBER < 0x30000000L
bne = BN_new();
rsa = RSA_new();
if ((pkey = EVP_PKEY_new()) != NULL) {
if (!EVP_PKEY_assign_RSA(pkey,
RSA_generate_key(keysize, 0x10001, NULL, NULL))) {
Tcl_SetResult(interp,"Error generating private key",NULL);
pkey = EVP_PKEY_new();
if (bne == NULL || rsa == NULL || pkey == NULL || !BN_set_word(bne,RSA_F4) ||
!RSA_generate_key_ex(rsa, keysize, bne, NULL) || !EVP_PKEY_assign_RSA(pkey, rsa)) {
EVP_PKEY_free(pkey);
/* RSA_free(rsa); freed by EVP_PKEY_free */
BN_free(bne);
#else
pkey = EVP_RSA_gen((unsigned int) keysize);
ctx = EVP_PKEY_CTX_new(pkey,NULL);
if (pkey == NULL || ctx == NULL || !EVP_PKEY_keygen_init(ctx) ||
!EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, keysize) || !EVP_PKEY_keygen(ctx, &pkey)) {
EVP_PKEY_free(pkey);
EVP_PKEY_CTX_free(ctx);
#endif
Tcl_SetResult(interp,"Error generating private key",NULL);
return TCL_ERROR;
}
} else {
if (isStr) {
out=BIO_new(BIO_s_mem());
PEM_write_bio_PrivateKey(out,pkey,NULL,NULL,0,NULL,NULL);
i=BIO_read(out,buffer,sizeof(buffer)-1);
i=(i<0) ? 0 : i;
buffer[i]='\0';
Tcl_SetVar(interp,keyout,buffer,0);
BIO_flush(out);
BIO_free(out);
} else {
out=BIO_new(BIO_s_file());
BIO_write_filename(out,keyout);
PEM_write_bio_PrivateKey(out,pkey,NULL,NULL,0,NULL,NULL);
/* PEM_write_bio_RSAPrivateKey(out, rsa, NULL, NULL, 0, NULL, NULL); */
BIO_free_all(out);
}
if ((cert=X509_new())==NULL) {
Tcl_SetResult(interp,"Error generating certificate request",NULL);
EVP_PKEY_free(pkey);
#if OPENSSL_VERSION_NUMBER < 0x30000000L
BN_free(bne);
#endif
return(TCL_ERROR);
}
X509_set_version(cert,2);
ASN1_INTEGER_set(X509_get_serialNumber(cert),serial);
X509_gmtime_adj(X509_get_notBefore(cert),0);
X509_gmtime_adj(X509_get_notAfter(cert),(long)60*60*24*days);
X509_gmtime_adj(X509_getm_notBefore(cert),0);
X509_gmtime_adj(X509_getm_notAfter(cert),(long)60*60*24*days);
X509_set_pubkey(cert,pkey);
name=X509_get_subject_name(cert);
X509_NAME_add_entry_by_txt(name,"C", MBSTRING_ASC, (unsigned char *) k_C, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"ST", MBSTRING_ASC, (unsigned char *) k_ST, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"L", MBSTRING_ASC, (unsigned char *) k_L, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"O", MBSTRING_ASC, (unsigned char *) k_O, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"OU", MBSTRING_ASC, (unsigned char *) k_OU, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"CN", MBSTRING_ASC, (unsigned char *) k_CN, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"Email", MBSTRING_ASC, (unsigned char *) k_Email, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"C", MBSTRING_ASC, (const unsigned char *) k_C, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"ST", MBSTRING_ASC, (const unsigned char *) k_ST, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"L", MBSTRING_ASC, (const unsigned char *) k_L, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"O", MBSTRING_ASC, (const unsigned char *) k_O, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"OU", MBSTRING_ASC, (const unsigned char *) k_OU, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"CN", MBSTRING_ASC, (const unsigned char *) k_CN, -1, -1, 0);
X509_NAME_add_entry_by_txt(name,"Email", MBSTRING_ASC, (const unsigned char *) k_Email, -1, -1, 0);
X509_set_subject_name(cert,name);
if (!X509_sign(cert,pkey,EVP_md5())) {
if (!X509_sign(cert,pkey,EVP_sha256())) {
X509_free(cert);
EVP_PKEY_free(pkey);
#if OPENSSL_VERSION_NUMBER < 0x30000000L
BN_free(bne);
#endif
Tcl_SetResult(interp,"Error signing certificate",NULL);
return TCL_ERROR;
}
if (isStr) {
out=BIO_new(BIO_s_mem());
PEM_write_bio_X509(out,cert);
i=BIO_read(out,buffer,sizeof(buffer)-1);
i=(i<0) ? 0 : i;
buffer[i]='\0';
Tcl_SetVar(interp,pemout,buffer,0);
BIO_flush(out);
BIO_free(out);
} else {
out=BIO_new(BIO_s_file());
BIO_write_filename(out,pemout);
PEM_write_bio_X509(out,cert);
BIO_free_all(out);
}
X509_free(cert);
EVP_PKEY_free(pkey);
#if OPENSSL_VERSION_NUMBER < 0x30000000L
} else {
BN_free(bne);
Tcl_SetResult(interp,"Error generating private key",NULL);
return TCL_ERROR;
#endif
}
}
break;
default:
break;
}
return TCL_OK;
}
/********************/
/* Init */
/********************/
/*
*-------------------------------------------------------------------
*
* Tls_Free --
*
* This procedure cleans up when a SSL socket based channel
* is closed and its reference count falls below 1
*
* Results:
* none
*
* Side effects:
* Frees all the state
*
*-------------------------------------------------------------------
*/
void
#if TCL_MAJOR_VERSION > 8
Tls_Free( void *blockPtr )
#else
Tls_Free( char *blockPtr )
Tls_Free(char *blockPtr) {
#endif
{
State *statePtr = (State *)blockPtr;
dprintf("Called");
Tls_Clean(statePtr);
ckfree(blockPtr);
}
|
︙ | | |
1715
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|
+
+
+
+
|
* we're assuming here that we're single-threaded
*/
if (statePtr->timer != (Tcl_TimerToken) NULL) {
Tcl_DeleteTimerHandler(statePtr->timer);
statePtr->timer = NULL;
}
if (statePtr->protos) {
ckfree(statePtr->protos);
statePtr->protos = NULL;
}
if (statePtr->bio) {
/* This will call SSL_shutdown. Bug 1414045 */
dprintf("BIO_free_all(%p)", statePtr->bio);
BIO_free_all(statePtr->bio);
statePtr->bio = NULL;
}
if (statePtr->ssl) {
|
︙ | | |
1738
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1740
1741
1742
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1843
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|
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2801
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2823
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2827
2828
2829
2830
2831
2832
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2834
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2836
2837
2838
2839
2840
2841
2842
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2845
2846
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2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
|
+
+
+
+
+
+
+
+
+
+
-
+
-
-
-
-
-
-
+
-
-
+
+
-
+
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
-
+
-
-
+
|
Tcl_DecrRefCount(statePtr->callback);
statePtr->callback = NULL;
}
if (statePtr->password) {
Tcl_DecrRefCount(statePtr->password);
statePtr->password = NULL;
}
if (statePtr->vcmd) {
Tcl_DecrRefCount(statePtr->vcmd);
statePtr->vcmd = NULL;
}
dprintf("Returning");
}
#if TCL_MAJOR_VERSION > 8
#define MIN_VERSION "9.0"
#else
#define MIN_VERSION "8.5"
#endif
/*
*-------------------------------------------------------------------
*
* Tls_Init --
*
* This is a package initialization procedure, which is called
* by Tcl when this package is to be added to an interpreter.
*
* Results: Ssl configured and loaded
*
* Side effects:
* create the ssl command, initialise ssl context
* create the ssl command, initialize ssl context
*
*-------------------------------------------------------------------
*/
DLLEXPORT int Tls_Init(Tcl_Interp *interp) {
const char tlsTclInitScript[] = {
#include "tls.tcl.h"
0x00
};
dprintf("Called");
/*
* We only support Tcl 8.4 or newer
*/
if (
#ifdef USE_TCL_STUBS
Tcl_InitStubs(interp, "8.6-", 0)
if (Tcl_InitStubs(interp, MIN_VERSION, 0) == NULL) {
#else
Tcl_PkgRequire(interp, "Tcl", "8.6-", 0)
return TCL_ERROR;
}
#endif
== NULL) {
if (Tcl_PkgRequire(interp, "Tcl", MIN_VERSION, 0) == NULL) {
return TCL_ERROR;
}
if (TlsLibInit(0) != TCL_OK) {
Tcl_AppendResult(interp, "could not initialize SSL library", (char *)NULL);
return TCL_ERROR;
}
Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::handshake", HandshakeObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::import", ImportObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::unimport", UnimportObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::status", StatusObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::misc", MiscObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::connection", ConnectionInfoObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::handshake", HandshakeObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::import", ImportObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::unimport", UnimportObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::status", StatusObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::misc", MiscObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "tls::protocols", ProtocolsObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
if (interp) {
Tcl_Eval(interp, tlsTclInitScript);
}
return(Tcl_PkgProvide(interp, "tls", PACKAGE_VERSION));
return Tcl_PkgProvide(interp, PACKAGE_NAME, PACKAGE_VERSION);
}
/*
*------------------------------------------------------*
*
* Tls_SafeInit --
*
* ------------------------------------------------*
* Standard procedure required by 'load'.
* Initializes this extension for a safe interpreter.
* ------------------------------------------------*
*
* Sideeffects:
* As of 'Tls_Init'
*
* Result:
* A standard Tcl error code.
*
*------------------------------------------------------*
*/
DLLEXPORT int Tls_SafeInit(Tcl_Interp *interp) {
dprintf("Called");
return(Tls_Init(interp));
}
/*
*------------------------------------------------------*
*
* TlsLibInit --
*
* ------------------------------------------------*
* Initializes SSL library once per application
* ------------------------------------------------*
*
* Side effects:
* initilizes SSL library
* initializes SSL library
*
* Result:
* none
*
*------------------------------------------------------*
*/
static int TlsLibInit(int uninitialize) {
|
︙ | | |
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
|
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
|
-
-
-
|
}
dprintf("Asked to uninitialize");
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
Tcl_MutexLock(&init_mx);
CRYPTO_set_locking_callback(NULL);
CRYPTO_set_id_callback(NULL);
if (locks) {
free(locks);
locks = NULL;
locksCount = 0;
}
#endif
initialized = 0;
|
︙ | | |
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
|
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
|
-
-
+
+
-
-
-
-
-
-
+
-
-
+
-
-
+
|
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
Tcl_MutexLock(&init_mx);
#endif
initialized = 1;
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
num_locks = CRYPTO_num_locks();
locksCount = num_locks;
num_locks = 1;
locksCount = (int) num_locks;
locks = malloc(sizeof(*locks) * num_locks);
memset(locks, 0, sizeof(*locks) * num_locks);
CRYPTO_set_locking_callback(CryptoThreadLockCallback);
CRYPTO_set_id_callback(CryptoThreadIdCallback);
#endif
if (SSL_library_init() != 1) {
status = TCL_ERROR;
goto done;
/* Initialize BOTH libcrypto and libssl. */
}
OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS
SSL_load_error_strings();
ERR_load_crypto_strings();
| OPENSSL_INIT_ADD_ALL_CIPHERS | OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
BIO_new_tcl(NULL, 0);
#if 0
/*
* XXX:TODO: Remove this code and replace it with a check
* for enough entropy and do not try to create our own
|
︙ | | |
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
|
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
|
-
|
for (i = 0; i < 16; i++) {
rnd_seed[i] = 1 + (char) (255.0 * rand()/(RAND_MAX+1.0));
}
RAND_seed(rnd_seed, sizeof(rnd_seed));
} while (RAND_status() != 1);
#endif
done:
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
Tcl_MutexUnlock(&init_mx);
#endif
return(status);
}
|
︙ | | |
14
15
16
17
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20
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|
14
15
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|
+
-
-
-
-
-
-
-
-
-
-
+
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
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-
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-
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-
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+
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+
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+
-
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+
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-
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-
+
-
+
+
-
+
+
+
+
|
* Also work done by the follow people provided the impetus to do this "right":
* tclSSL (Colin McCormack, Shared Technology)
* SSLtcl (Peter Antman)
*
*/
#include "tlsInt.h"
#include <errno.h>
/*
* Forward declarations
*/
static int TlsBlockModeProc (void *instanceData, int mode);
static int TlsCloseProc (void *instanceData, Tcl_Interp *interp);
static int TlsClose2Proc (void *instanceData, Tcl_Interp *interp, int flags);
static int TlsInputProc (void *instanceData, char *buf, int bufSize, int *errorCodePtr);
static int TlsOutputProc (void *instanceData, const char *buf, int toWrite, int *errorCodePtr);
static int TlsGetOptionProc (void *instanceData, Tcl_Interp *interp, const char *optionName, Tcl_DString *dsPtr);
static void TlsWatchProc (void *instanceData, int mask);
static int TlsGetHandleProc (void *instanceData, int direction, void **handlePtr);
static int TlsNotifyProc (void *instanceData, int mask);
static void TlsChannelHandlerTimer (void *clientData);
static void TlsChannelHandlerTimer(ClientData clientData);
/*
* TLS Channel Type
*/
static const Tcl_ChannelType tlsChannelType = {
"tls", /* typeName */
TCL_CHANNEL_VERSION_5, /* version */
TlsCloseProc, /* closeProc */
TlsInputProc, /* inputProc */
TlsOutputProc, /* outputProc */
0, /* seekProc */
0, /* setOptionProc */
TlsGetOptionProc, /* getOptionProc */
TlsWatchProc, /* watchProc */
TlsGetHandleProc, /* getHandleProc */
TlsClose2Proc, /* close2Proc */
TlsBlockModeProc, /* blockModeProc */
0, /* flushProc */
TlsNotifyProc, /* handlerProc */
0, /* wideSeekProc */
0, /* threadActionProc */
0 /* truncateProc */
};
/*
*-------------------------------------------------------------------
*
* Tls_ChannelType --
*
* Return the correct TLS channel driver info
*
* Results:
* The correct channel driver for the current version of Tcl.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
const Tcl_ChannelType *Tls_ChannelType(void) {
return &tlsChannelType;
}
/*
*-------------------------------------------------------------------
*
* TlsBlockModeProc --
*
* This procedure is invoked by the generic IO level
* to set blocking and nonblocking modes
*
* Results:
* 0 if successful, errno when failed.
* 0 if successful or POSIX error code if failed.
*
* Side effects:
* Sets the device into blocking or nonblocking mode.
*
*-------------------------------------------------------------------
*/
static int TlsBlockModeProc(void *instanceData, int mode) {
static int TlsBlockModeProc(ClientData instanceData, int mode) {
State *statePtr = (State *) instanceData;
if (mode == TCL_MODE_NONBLOCKING) {
statePtr->flags |= TLS_TCL_ASYNC;
} else {
statePtr->flags &= ~(TLS_TCL_ASYNC);
}
return(0);
}
/*
*-------------------------------------------------------------------
*
* TlsCloseProc --
*
* This procedure is invoked by the generic IO level to perform
* channel-type-specific cleanup when a SSL socket based channel
* is closed.
*
* Note: we leave the underlying socket alone, is this right?
*
* Results:
* 0 if successful, the value of Tcl_GetErrno() if failed.
* 0 if successful or POSIX error code if failed.
*
* Side effects:
* Closes the socket of the channel.
*
*-------------------------------------------------------------------
*/
static int TlsCloseProc(void *instanceData, TCL_UNUSED(Tcl_Interp *)) {
static int TlsCloseProc(ClientData instanceData, Tcl_Interp *interp) {
State *statePtr = (State *) instanceData;
dprintf("TlsCloseProc(%p)", statePtr);
dprintf("TlsCloseProc(%p)", (void *) statePtr);
Tls_Clean(statePtr);
Tcl_EventuallyFree(statePtr, Tls_Free);
dprintf("Returning TCL_OK");
Tcl_EventuallyFree((ClientData)statePtr, Tls_Free);
return(0);
}
static int TlsClose2Proc(ClientData instanceData, /* The socket state. */
Tcl_Interp *interp, /* For errors - can be NULL. */
int flags) /* Flags to close read and/or write side of channel */
{
return(TCL_OK);
}
State *statePtr = (State *) instanceData;
dprintf("TlsClose2Proc(%p)", (void *) statePtr);
static int TlsClose2Proc(void *instanceData, Tcl_Interp *interp, int flags) {
if (!(flags&(TCL_CLOSE_READ|TCL_CLOSE_WRITE))) {
if ((flags & (TCL_CLOSE_READ|TCL_CLOSE_WRITE)) == 0) {
return TlsCloseProc(instanceData, interp);
}
return EINVAL;
}
/*
*------------------------------------------------------*
*
* Tls_WaitForConnect --
*
* Sideeffects:
* Issues SSL_accept or SSL_connect
* Result:
* 0 if successful, -1 if failed.
*
* Result:
* None.
* Side effects:
* Issues SSL_accept or SSL_connect
*
*------------------------------------------------------*
*/
int Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent) {
unsigned long backingError;
int err, rc;
int bioShouldRetry;
*errorCodePtr = 0;
dprintf("WaitForConnect(%p)", statePtr);
dprintf("WaitForConnect(%p)", (void *) statePtr);
dprintFlags(statePtr);
if (!(statePtr->flags & TLS_TCL_INIT)) {
dprintf("Tls_WaitForConnect called on already initialized channel -- returning with immediate success");
*errorCodePtr = 0;
return(0);
}
if (statePtr->flags & TLS_TCL_HANDSHAKE_FAILED) {
/*
* Different types of operations have different requirements
* SSL being established
*/
if (handshakeFailureIsPermanent) {
dprintf("Asked to wait for a TLS handshake that has already failed. Returning fatal error");
*errorCodePtr = ECONNABORTED;
} else {
dprintf("Asked to wait for a TLS handshake that has already failed. Returning soft error");
*errorCodePtr = ECONNRESET;
}
Tls_Error(statePtr, "Wait for failed handshake");
return(-1);
}
for (;;) {
ERR_clear_error();
/* Not initialized yet! */
/* Not initialized yet! Also calls SSL_do_handshake. */
if (statePtr->flags & TLS_TCL_SERVER) {
dprintf("Calling SSL_accept()");
err = SSL_accept(statePtr->ssl);
} else {
dprintf("Calling SSL_connect()");
err = SSL_connect(statePtr->ssl);
}
if (err > 0) {
dprintf("That seems to have gone okay");
dprintf("Accept or connect was successful");
err = BIO_flush(statePtr->bio);
if (err <= 0) {
dprintf("Flushing the lower layers failed, this will probably terminate this session");
}
} else {
dprintf("Accept or connect failed");
}
rc = SSL_get_error(statePtr->ssl, err);
backingError = ERR_get_error();
if (rc != SSL_ERROR_NONE) {
dprintf("Got error: %i (rc = %i)", err, rc);
dprintf("Got error: %s", ERR_reason_error_string(backingError));
}
bioShouldRetry = 0;
if (err <= 0) {
if (rc == SSL_ERROR_WANT_CONNECT || rc == SSL_ERROR_WANT_ACCEPT || rc == SSL_ERROR_WANT_READ || rc == SSL_ERROR_WANT_WRITE) {
bioShouldRetry = 1;
} else if (BIO_should_retry(statePtr->bio)) {
bioShouldRetry = 1;
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}
if (bioShouldRetry) {
dprintf("The I/O did not complete -- but we should try it again");
if (statePtr->flags & TLS_TCL_ASYNC) {
dprintf("Returning EAGAIN so that it can be retried later");
*errorCodePtr = EAGAIN;
Tls_Error(statePtr, "Handshake not complete, will retry later");
return(-1);
} else {
dprintf("Doing so now");
continue;
}
}
dprintf("We have either completely established the session or completely failed it -- there is no more need to ever retry it though");
break;
}
*errorCodePtr = EINVAL;
switch (rc) {
case SSL_ERROR_NONE:
/* The connection is up, we are done here */
dprintf("The connection is up");
/* The TLS/SSL I/O operation completed */
dprintf("The connection is good");
*errorCodePtr = 0;
break;
case SSL_ERROR_ZERO_RETURN:
/* The TLS/SSL peer has closed the connection for writing by sending the close_notify alert */
dprintf("SSL_ERROR_ZERO_RETURN: Connect returned an invalid value...")
dprintf("SSL_ERROR_ZERO_RETURN: Connect returned an invalid value...");
*errorCodePtr = EINVAL;
Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
return(-1);
case SSL_ERROR_SYSCALL:
backingError = ERR_get_error();
/* Some non-recoverable, fatal I/O error occurred */
dprintf("SSL_ERROR_SYSCALL");
if (backingError == 0 && err == 0) {
dprintf("EOF reached")
*errorCodePtr = ECONNRESET;
Tls_Error(statePtr, "(unexpected) EOF reached");
} else if (backingError == 0 && err == -1) {
dprintf("I/O error occured (errno = %lu)", (unsigned long) Tcl_GetErrno());
dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
*errorCodePtr = Tcl_GetErrno();
if (*errorCodePtr == ECONNRESET) {
*errorCodePtr = ECONNABORTED;
}
Tls_Error(statePtr, (char *) Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occured (backingError = %lu)", backingError);
*errorCodePtr = backingError;
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = Tcl_GetErrno();
if (*errorCodePtr == ECONNRESET) {
*errorCodePtr = ECONNABORTED;
}
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
}
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
return(-1);
case SSL_ERROR_SSL:
dprintf("Got permanent fatal SSL error, aborting immediately");
Tls_Error(statePtr, (char *)ERR_reason_error_string(ERR_get_error()));
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
*errorCodePtr = ECONNABORTED;
return(-1);
case SSL_ERROR_WANT_CONNECT:
case SSL_ERROR_SSL:
case SSL_ERROR_WANT_ACCEPT:
case SSL_ERROR_WANT_X509_LOOKUP:
default:
dprintf("We got a confusing reply: %i", rc);
*errorCodePtr = Tcl_GetErrno();
dprintf("ERR(%d, %d) ", rc, *errorCodePtr);
return(-1);
}
/* A non-recoverable, fatal error in the SSL library occurred, usually a protocol error */
#if 0
if (statePtr->flags & TLS_TCL_SERVER) {
dprintf("This is an TLS server, checking the certificate for the peer");
err = SSL_get_verify_result(statePtr->ssl);
if (err != X509_V_OK) {
dprintf("SSL_ERROR_SSL: Got permanent fatal SSL error, aborting immediately");
if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, (char *) X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
dprintf("Invalid certificate, returning in failure");
Tls_Error(statePtr, (char *)X509_verify_cert_error_string(err));
}
if (backingError != 0) {
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
}
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
*errorCodePtr = ECONNABORTED;
return(-1);
}
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_WRITE:
case SSL_ERROR_WANT_X509_LOOKUP:
case SSL_ERROR_WANT_CONNECT:
case SSL_ERROR_WANT_ACCEPT:
case SSL_ERROR_WANT_ASYNC:
case SSL_ERROR_WANT_ASYNC_JOB:
case SSL_ERROR_WANT_CLIENT_HELLO_CB:
default:
/* The operation did not complete and should be retried later. */
dprintf("Operation did not complete, call function again later: %i", rc);
*errorCodePtr = EAGAIN;
dprintf("ERR(%d, %d) ", rc, *errorCodePtr);
Tls_Error(statePtr, "Operation did not complete, call function again later");
return(-1);
}
#endif
dprintf("Removing the \"TLS_TCL_INIT\" flag since we have completed the handshake");
statePtr->flags &= ~TLS_TCL_INIT;
dprintf("Returning in success");
*errorCodePtr = 0;
return(0);
}
/*
*-------------------------------------------------------------------
*
* TlsInputProc --
*
* This procedure is invoked by the generic IO level
* to read input from a SSL socket based channel.
*
* Results:
* The number of bytes read is returned or -1 on error. An output
* argument contains the POSIX error code on error, or zero if no
* Returns the number of bytes read or -1 on error. Sets errorCodePtr
* to a POSIX error code if an error occurred, or 0 if none.
* error occurred.
*
* Side effects:
* Reads input from the input device of the channel.
*
*-------------------------------------------------------------------
*/
static int TlsInputProc(void *instanceData, char *buf, int bufSize, int *errorCodePtr) {
static int TlsInputProc(ClientData instanceData, char *buf, int bufSize, int *errorCodePtr) {
unsigned long backingError;
State *statePtr = (State *) instanceData;
int bytesRead;
int tlsConnect;
int err;
*errorCodePtr = 0;
dprintf("BIO_read(%d)", bufSize);
if (statePtr->flags & TLS_TCL_CALLBACK) {
/* don't process any bytes while verify callback is running */
dprintf("Callback is running, reading 0 bytes");
return(0);
}
dprintf("Calling Tls_WaitForConnect");
tlsConnect = Tls_WaitForConnect(statePtr, errorCodePtr, 0);
if (tlsConnect < 0) {
dprintf("Got an error waiting to connect (tlsConnect = %i, *errorCodePtr = %i)", tlsConnect, *errorCodePtr);
Tls_Error(statePtr, strerror(*errorCodePtr));
bytesRead = -1;
if (*errorCodePtr == ECONNRESET) {
dprintf("Got connection reset");
/* Soft EOF */
*errorCodePtr = 0;
bytesRead = 0;
}
return(bytesRead);
}
/*
* We need to clear the SSL error stack now because we sometimes reach
* this function with leftover errors in the stack. If BIO_read
* returns -1 and intends EAGAIN, there is a leftover error, it will be
* misconstrued as an error, not EAGAIN.
*
* Alternatively, we may want to handle the <0 return codes from
* BIO_read specially (as advised in the RSA docs). TLS's lower level BIO
* functions play with the retry flags though, and this seems to work
* correctly. Similar fix in TlsOutputProc. - hobbs
*/
ERR_clear_error();
bytesRead = BIO_read(statePtr->bio, buf, bufSize);
dprintf("BIO_read -> %d", bytesRead);
err = SSL_get_error(statePtr->ssl, bytesRead);
backingError = ERR_get_error();
#if 0
if (bytesRead <= 0) {
if (BIO_should_retry(statePtr->bio)) {
dprintf("I/O failed, will retry based on EAGAIN");
*errorCodePtr = EAGAIN;
}
}
#endif
switch (err) {
case SSL_ERROR_NONE:
dprintBuffer(buf, bytesRead);
break;
case SSL_ERROR_SSL:
/* A non-recoverable, fatal error in the SSL library occurred, usually a protocol error */
dprintf("SSL negotiation error, indicating that the connection has been aborted");
dprintf("SSL error, indicating that the connection has been aborted");
if (backingError != 0) {
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
} else if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, (char *) X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
} else {
Tls_Error(statePtr, "Unknown SSL error");
}
Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, bytesRead));
*errorCodePtr = ECONNABORTED;
bytesRead = -1;
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
/* Unexpected EOF from the peer for OpenSSL 3.0+ */
if (ERR_GET_REASON(backingError) == SSL_R_UNEXPECTED_EOF_WHILE_READING) {
dprintf("(Unexpected) EOF reached")
*errorCodePtr = 0;
bytesRead = 0;
Tls_Error(statePtr, "EOF reached");
}
#endif
break;
case SSL_ERROR_SYSCALL:
backingError = ERR_get_error();
/* Some non-recoverable, fatal I/O error occurred */
if (backingError == 0 && bytesRead == 0) {
/* Unexpected EOF from the peer for OpenSSL 1.1 */
dprintf("EOF reached")
dprintf("(Unexpected) EOF reached")
*errorCodePtr = 0;
bytesRead = 0;
Tls_Error(statePtr, "EOF reached");
} else if (backingError == 0 && bytesRead == -1) {
dprintf("I/O error occured (errno = %lu)", (unsigned long) Tcl_GetErrno());
dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
*errorCodePtr = Tcl_GetErrno();
bytesRead = -1;
Tls_Error(statePtr, (char *) Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occured (backingError = %lu)", backingError);
*errorCodePtr = backingError;
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = Tcl_GetErrno();
bytesRead = -1;
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
}
break;
case SSL_ERROR_ZERO_RETURN:
dprintf("Got SSL_ERROR_ZERO_RETURN, this means an EOF has been reached");
bytesRead = 0;
*errorCodePtr = 0;
Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
break;
case SSL_ERROR_WANT_READ:
dprintf("Got SSL_ERROR_WANT_READ, mapping this to EAGAIN");
bytesRead = -1;
*errorCodePtr = EAGAIN;
Tls_Error(statePtr, "SSL_ERROR_WANT_READ");
break;
default:
dprintf("Unknown error (err = %i), mapping to EOF", err);
*errorCodePtr = 0;
bytesRead = 0;
Tls_Error(statePtr, "Unknown error");
break;
}
dprintf("Input(%d) -> %d [%d]", bufSize, bytesRead, *errorCodePtr);
return(bytesRead);
}
/*
*-------------------------------------------------------------------
*
* TlsOutputProc --
*
* This procedure is invoked by the generic IO level
* to write output to a SSL socket based channel.
*
* Results:
* The number of bytes written is returned. An output argument is
* set to a POSIX error code if an error occurred, or zero.
* Returns the number of bytes written or -1 on error. Sets errorCodePtr
* to a POSIX error code if an error occurred, or 0 if none.
*
* Side effects:
* Writes output on the output device of the channel.
*
*-------------------------------------------------------------------
*/
static int TlsOutputProc(void *instanceData, const char *buf, int toWrite, int *errorCodePtr) {
static int TlsOutputProc(ClientData instanceData, const char *buf, int toWrite, int *errorCodePtr) {
unsigned long backingError;
State *statePtr = (State *) instanceData;
int written, err;
int tlsConnect;
*errorCodePtr = 0;
dprintf("BIO_write(%p, %d)", (void *) statePtr, toWrite);
dprintBuffer(buf, toWrite);
if (statePtr->flags & TLS_TCL_CALLBACK) {
dprintf("Don't process output while callbacks are running")
dprintf("Don't process output while callbacks are running");
written = -1;
*errorCodePtr = EAGAIN;
return(-1);
}
dprintf("Calling Tls_WaitForConnect");
tlsConnect = Tls_WaitForConnect(statePtr, errorCodePtr, 1);
if (tlsConnect < 0) {
dprintf("Got an error waiting to connect (tlsConnect = %i, *errorCodePtr = %i)", tlsConnect, *errorCodePtr);
Tls_Error(statePtr, strerror(*errorCodePtr));
written = -1;
if (*errorCodePtr == ECONNRESET) {
dprintf("Got connection reset");
/* Soft EOF */
*errorCodePtr = 0;
written = 0;
}
return(written);
}
if (toWrite == 0) {
dprintf("zero-write");
err = BIO_flush(statePtr->bio);
if (err <= 0) {
dprintf("Flushing failed");
Tls_Error(statePtr, "Flush failed");
*errorCodePtr = EIO;
written = 0;
return(-1);
}
written = 0;
|
︙ | | |
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* work correctly. Similar fix in TlsInputProc. - hobbs
*/
ERR_clear_error();
written = BIO_write(statePtr->bio, buf, toWrite);
dprintf("BIO_write(%p, %d) -> [%d]", (void *) statePtr, toWrite, written);
err = SSL_get_error(statePtr->ssl, written);
backingError = ERR_get_error();
switch (err) {
case SSL_ERROR_NONE:
if (written < 0) {
written = 0;
}
break;
case SSL_ERROR_WANT_WRITE:
dprintf("Got SSL_ERROR_WANT_WRITE, mapping it to EAGAIN");
*errorCodePtr = EAGAIN;
written = -1;
Tls_Error(statePtr, "SSL_ERROR_WANT_WRITE");
break;
case SSL_ERROR_WANT_READ:
dprintf(" write R BLOCK");
Tls_Error(statePtr, "SSL_ERROR_WANT_READ");
break;
case SSL_ERROR_WANT_X509_LOOKUP:
dprintf(" write X BLOCK");
Tls_Error(statePtr, "SSL_ERROR_WANT_X509_LOOKUP");
break;
case SSL_ERROR_ZERO_RETURN:
dprintf(" closed");
written = 0;
*errorCodePtr = 0;
Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
break;
case SSL_ERROR_SYSCALL:
backingError = ERR_get_error();
/* Some non-recoverable, fatal I/O error occurred */
if (backingError == 0 && written == 0) {
dprintf("EOF reached")
*errorCodePtr = 0;
written = 0;
Tls_Error(statePtr, "EOF reached");
} else if (backingError == 0 && written == -1) {
dprintf("I/O error occured (errno = %lu)", (unsigned long) Tcl_GetErrno());
dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
*errorCodePtr = Tcl_GetErrno();
written = -1;
Tls_Error(statePtr, (char *) Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occured (backingError = %lu)", backingError);
*errorCodePtr = backingError;
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = Tcl_GetErrno();
written = -1;
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
}
break;
case SSL_ERROR_SSL:
/* A non-recoverable, fatal error in the SSL library occurred, usually a protocol error */
dprintf("SSL error, indicating that the connection has been aborted");
if (backingError != 0) {
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
} else if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, (char *) X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
} else {
Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, written));
Tls_Error(statePtr, "Unknown SSL error");
}
*errorCodePtr = ECONNABORTED;
written = -1;
break;
default:
dprintf(" unknown err: %d", err);
dprintf("unknown error: %d", err);
Tls_Error(statePtr, "Unknown error");
break;
}
dprintf("Output(%d) -> %d", toWrite, written);
return(written);
}
/*
*-------------------------------------------------------------------
*
* TlsSetOptionProc --
*
* Sets an option value for a SSL socket based channel, or a
* list of all options and their values.
*
* Results:
* TCL_OK if successful or TCL_ERROR if failed.
*
* Side effects:
* Updates channel option to new value.
*
*-------------------------------------------------------------------
*/
static int
TlsSetOptionProc(ClientData instanceData, /* Socket state. */
Tcl_Interp *interp, /* For errors - can be NULL. */
const char *optionName, /* Name of the option to set the value for, or
* NULL to get all options and their values. */
const char *optionValue) /* Value for option. */
{
State *statePtr = (State *) instanceData;
Tcl_Channel downChan = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
Tcl_DriverSetOptionProc *setOptionProc;
setOptionProc = Tcl_ChannelSetOptionProc(Tcl_GetChannelType(downChan));
if (setOptionProc != NULL) {
return (*setOptionProc)(Tcl_GetChannelInstanceData(downChan), interp, optionName, optionValue);
} else if (optionName == (char*) NULL) {
/*
* Request is query for all options, this is ok.
*/
return TCL_OK;
}
/*
* Request for a specific option has to fail, we don't have any.
*/
return Tcl_BadChannelOption(interp, optionName, "");
}
/*
*-------------------------------------------------------------------
*
* TlsGetOptionProc --
*
* Computes an option value for a SSL socket based channel, or a
* Gets an option value for a SSL socket based channel, or a
* list of all options and their values.
*
* Results:
* A standard Tcl result. The value of the specified option or a
* list of all options and their values is returned in the
* supplied DString.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
static int
TlsGetOptionProc(void *instanceData, /* Socket state. */
TlsGetOptionProc(ClientData instanceData, /* Socket state. */
Tcl_Interp *interp, /* For errors - can be NULL. */
const char *optionName, /* Name of the option to
const char *optionName, /* Name of the option to retrieve the value for, or
* retrieve the value for, or
* NULL to get all options and
* NULL to get all options and their values. */
* their values. */
Tcl_DString *dsPtr) /* Where to store the computed value
Tcl_DString *optionValue) /* Where to store the computed value initialized by caller. */
* initialized by caller. */
{
State *statePtr = (State *) instanceData;
Tcl_Channel downChan = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
Tcl_DriverGetOptionProc *getOptionProc;
getOptionProc = Tcl_ChannelGetOptionProc(Tcl_GetChannelType(downChan));
if (getOptionProc != NULL) {
return (*getOptionProc)(Tcl_GetChannelInstanceData(downChan), interp, optionName, dsPtr);
return (*getOptionProc)(Tcl_GetChannelInstanceData(downChan), interp, optionName, optionValue);
} else if (optionName == (char*) NULL) {
/*
* Request is query for all options, this is ok.
*/
return TCL_OK;
}
/*
* Request for a specific option has to fail, we don't have any.
*/
return TCL_ERROR;
return Tcl_BadChannelOption(interp, optionName, "");
}
/*
*-------------------------------------------------------------------
*
* TlsWatchProc --
*
* Initialize the notifier to watch Tcl_Files from this channel.
*
* Results:
* None.
*
* Side effects:
* Sets up the notifier so that a future event on the channel
* will be seen by Tcl.
*
*-------------------------------------------------------------------
*/
static void
TlsWatchProc(void *instanceData, /* The socket state. */
int mask) /* Events of interest; an OR-ed
TlsWatchProc(ClientData instanceData, /* The socket state. */
int mask) /* Events of interest; an OR-ed combination of
* combination of TCL_READABLE,
* TCL_WRITABLE and TCL_EXCEPTION. */
* TCL_READABLE, TCL_WRITABLE and TCL_EXCEPTION. */
{
Tcl_Channel downChan;
State *statePtr = (State *) instanceData;
Tcl_DriverWatchProc *watchProc;
dprintf("TlsWatchProc(0x%x)", mask);
/* Pretend to be dead as long as the verify callback is running.
* Otherwise that callback could be invoked recursively. */
if (statePtr->flags & TLS_TCL_CALLBACK) {
dprintf("Callback is on-going, doing nothing");
return;
}
dprintFlags(statePtr);
downChan = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
if (statePtr->flags & TLS_TCL_HANDSHAKE_FAILED) {
dprintf("Asked to watch a socket with a failed handshake -- nothing can happen here");
dprintf("Unregistering interest in the lower channel");
(Tcl_GetChannelType(downChan))->watchProc(Tcl_GetChannelInstanceData(downChan), 0);
watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(downChan));
watchProc(Tcl_GetChannelInstanceData(downChan), 0);
statePtr->watchMask = 0;
return;
}
statePtr->watchMask = mask;
/* No channel handlers any more. We will be notified automatically
* about events on the channel below via a call to our
* 'TransformNotifyProc'. But we have to pass the interest down now.
* We are allowed to add additional 'interest' to the mask if we want
* to. But this transformation has no such interest. It just passes
* the request down, unchanged.
*/
dprintf("Registering our interest in the lower channel (chan=%p)", (void *) downChan);
(Tcl_GetChannelType(downChan))
->watchProc(Tcl_GetChannelInstanceData(downChan), mask);
watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(downChan));
watchProc(Tcl_GetChannelInstanceData(downChan), mask);
/*
* Management of the internal timer.
*/
if (statePtr->timer != (Tcl_TimerToken) NULL) {
dprintf("A timer was found, deleting it");
Tcl_DeleteTimerHandler(statePtr->timer);
statePtr->timer = (Tcl_TimerToken) NULL;
}
if (mask & TCL_READABLE) {
if (Tcl_InputBuffered(statePtr->self) > 0 || BIO_ctrl_pending(statePtr->bio) > 0) {
if ((mask & TCL_READABLE) &&
((Tcl_InputBuffered(statePtr->self) > 0) || (BIO_ctrl_pending(statePtr->bio) > 0))) {
/*
* There is interest in readable events and we actually have
* data waiting, so generate a timer to flush that.
*/
dprintf("Creating a new timer since data appears to be waiting");
statePtr->timer = Tcl_CreateTimerHandler(TLS_TCL_DELAY, TlsChannelHandlerTimer, statePtr);
statePtr->timer = Tcl_CreateTimerHandler(TLS_TCL_DELAY, TlsChannelHandlerTimer, (ClientData) statePtr);
}
}
}
/*
*-------------------------------------------------------------------
*
* TlsGetHandleProc --
*
* Called from Tcl_GetChannelFile to retrieve o/s file handler
* from the SSL socket based channel.
*
* Results:
* The appropriate Tcl_File or NULL if not present.
* The appropriate Tcl_File handle or NULL if none.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
static int TlsGetHandleProc(void *instanceData, int direction, void **handlePtr) {
static int TlsGetHandleProc(ClientData instanceData, /* Socket state. */
int direction, /* TCL_READABLE or TCL_WRITABLE */
ClientData *handlePtr) /* Handle associated with the channel */
{
State *statePtr = (State *) instanceData;
return(Tcl_GetChannelHandle(Tls_GetParent(statePtr, TLS_TCL_FASTPATH), direction, handlePtr));
}
/*
*-------------------------------------------------------------------
*
* TlsNotifyProc --
*
* Handler called by Tcl to inform us of activity
* on the underlying channel.
*
* Results:
* None.
* Type of event or 0 if failed
*
* Side effects:
* May process the incoming event by itself.
*
*-------------------------------------------------------------------
*/
static int TlsNotifyProc(ClientData instanceData, /* Socket state. */
int mask) /* type of event that occurred:
* OR-ed combination of TCL_READABLE or TCL_WRITABLE */
{
static int TlsNotifyProc(void *instanceData, int mask) {
State *statePtr = (State *) instanceData;
int errorCode;
/*
* An event occured in the underlying channel. This
* An event occurred in the underlying channel. This
* transformation doesn't process such events thus returns the
* incoming mask unchanged.
*/
if (statePtr->timer != (Tcl_TimerToken) NULL) {
/*
* Delete an existing timer. It was not fired, yet we are
* here, so the channel below generated such an event and we
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︙ | | |
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dprintf("Returning 0 due to callback");
return 0;
}
dprintf("Calling Tls_WaitForConnect");
errorCode = 0;
if (Tls_WaitForConnect(statePtr, &errorCode, 1) < 0) {
Tls_Error(statePtr, strerror(errorCode));
if (errorCode == EAGAIN) {
dprintf("Async flag could be set (didn't check) and errorCode == EAGAIN: Returning 0");
return 0;
}
dprintf("Tls_WaitForConnect returned an error");
}
dprintf("Returning %i", mask);
return(mask);
}
#if 0
/*
*------------------------------------------------------*
*
* TlsChannelHandler --
*
* ------------------------------------------------*
* Handler called by Tcl as a result of
* Tcl_CreateChannelHandler - to inform us of activity
* on the underlying channel.
* ------------------------------------------------*
*
* Sideeffects:
* May generate subsequent calls to
* Tcl_NotifyChannel.
*
* Result:
* None.
*
*------------------------------------------------------*
*/
static void
TlsChannelHandler (clientData, mask)
void * clientData;
int mask;
{
State *statePtr = (State *) clientData;
dprintf("HANDLER(0x%x)", mask);
Tcl_Preserve(statePtr);
if (mask & TCL_READABLE) {
BIO_set_flags(statePtr->p_bio, BIO_FLAGS_READ);
} else {
BIO_clear_flags(statePtr->p_bio, BIO_FLAGS_READ);
}
if (mask & TCL_WRITABLE) {
BIO_set_flags(statePtr->p_bio, BIO_FLAGS_WRITE);
} else {
BIO_clear_flags(statePtr->p_bio, BIO_FLAGS_WRITE);
}
mask = 0;
if (BIO_wpending(statePtr->bio)) {
mask |= TCL_WRITABLE;
}
if (BIO_pending(statePtr->bio)) {
mask |= TCL_READABLE;
}
/*
* The following NotifyChannel calls seems to be important, but
* we don't know why. It looks like if the mask is ever non-zero
* that it will enter an infinite loop.
*
* Notify the upper channel of the current BIO state so the event
* continues to propagate up the chain.
*
* stanton: It looks like this could result in an infinite loop if
* the upper channel doesn't cause ChannelHandler to be removed
* before Tcl_NotifyChannel calls channel handlers on the lower channel.
*/
Tcl_NotifyChannel(statePtr->self, mask);
if (statePtr->timer != (Tcl_TimerToken)NULL) {
Tcl_DeleteTimerHandler(statePtr->timer);
statePtr->timer = (Tcl_TimerToken)NULL;
}
if ((mask & TCL_READABLE) && Tcl_InputBuffered(statePtr->self) > 0) {
/*
* Data is waiting, flush it out in short time
*/
statePtr->timer = Tcl_CreateTimerHandler(TLS_TCL_DELAY,
TlsChannelHandlerTimer, statePtr);
}
Tcl_Release(statePtr);
}
#endif
/*
*------------------------------------------------------*
*
* TlsChannelHandlerTimer --
*
* ------------------------------------------------*
* Called by the notifier (-> timer) to flush out
* information waiting in channel buffers.
* ------------------------------------------------*
*
* Sideeffects:
* As of 'TlsChannelHandler'.
*
* Result:
* None.
*
*------------------------------------------------------*
*/
static void TlsChannelHandlerTimer(void *clientData) {
static void TlsChannelHandlerTimer(ClientData clientData) {
State *statePtr = (State *) clientData;
int mask = 0;
dprintf("Called");
statePtr->timer = (Tcl_TimerToken) NULL;
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Tcl_Channel Tls_GetParent(State *statePtr, int maskFlags) {
dprintf("Requested to get parent of channel %p", statePtr->self);
if ((statePtr->flags & ~maskFlags) & TLS_TCL_FASTPATH) {
dprintf("Asked to get the parent channel while we are using FastPath -- returning NULL");
return(NULL);
}
return(Tcl_GetStackedChannel(statePtr->self));
return(Tcl_GetStackedChannel(statePtr->self));
}
}
/*
*-------------------------------------------------------------------
*
* Tls_ChannelType --
*
* Return the correct TLS channel driver info
*
* Results:
* The correct channel driver for the current version of Tcl.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
static const Tcl_ChannelType tlsChannelType = {
"tls", /* Type name */
TCL_CHANNEL_VERSION_5, /* v5 channel */
TlsCloseProc, /* Close proc */
TlsInputProc, /* Input proc */
TlsOutputProc, /* Output proc */
NULL, /* Seek proc */
TlsSetOptionProc, /* Set option proc */
TlsGetOptionProc, /* Get option proc */
TlsWatchProc, /* Initialize notifier */
TlsGetHandleProc, /* Get OS handles out of channel */
TlsClose2Proc, /* close2proc */
TlsBlockModeProc, /* Set blocking/nonblocking mode*/
NULL, /* Flush proc */
TlsNotifyProc, /* Handling of events bubbling up */
NULL, /* Wide seek proc */
NULL, /* Thread action */
NULL /* Truncate */
};
const Tcl_ChannelType *Tls_ChannelType(void) {
return &tlsChannelType;
}
|
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/*
* Copyright (C) 1997-2000 Sensus Consulting Ltd.
* Matt Newman <[email protected]>
* Copyright (C) 2023 Brian O'Hagan
*/
#include <tcl.h>
#include <stdio.h>
#include <openssl/bio.h>
#include <openssl/sha.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/x509_vfy.h>
#include <openssl/asn1.h>
#include "tlsInt.h"
/* Define maximum certificate size. Max PEM size 100kB and DER size is 24kB. */
#define CERT_STR_SIZE 32768
/*
* Binary string to hex string
*/
int String_to_Hex(unsigned char* input, int ilen, unsigned char *output, int olen) {
int count = 0;
unsigned char *iptr = input;
unsigned char *optr = &output[0];
const char *hex = "0123456789abcdef";
* Ensure these are not macros - known to be defined on Win32
for (int i = 0; i < ilen && count < olen - 1; i++, count += 2) {
*optr++ = hex[(*iptr>>4)&0xF];
*optr++ = hex[(*iptr++)&0xF];
}
*optr = 0;
return count;
}
/*
* BIO to Buffer
*/
int BIO_to_Buffer(int result, BIO *bio, void *buffer, int size) {
int len = 0;
int pending = BIO_pending(bio);
#ifdef min
#undef min
#endif
#ifdef max
#undef max
#endif
if (result) {
len = BIO_read(bio, buffer, (pending < size) ? pending : size);
(void)BIO_flush(bio);
if (len < 0) {
len = 0;
}
}
return len;
}
/*
* Get X509 Certificate Extensions
*/
Tcl_Obj *Tls_x509Extensions(Tcl_Interp *interp, X509 *cert) {
const STACK_OF(X509_EXTENSION) *exts;
Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL);
if (listPtr == NULL) {
return NULL;
}
if ((exts = X509_get0_extensions(cert)) != NULL) {
for (int i=0; i < X509_get_ext_count(cert); i++) {
X509_EXTENSION *ex = sk_X509_EXTENSION_value(exts, i);
ASN1_OBJECT *obj = X509_EXTENSION_get_object(ex);
/* ASN1_OCTET_STRING *data = X509_EXTENSION_get_data(ex); */
int critical = X509_EXTENSION_get_critical(ex);
LAPPEND_BOOL(interp, listPtr, OBJ_nid2ln(OBJ_obj2nid(obj)), critical);
}
}
return listPtr;
}
/*
* Get Authority and Subject Key Identifiers
*/
Tcl_Obj *Tls_x509Identifier(const ASN1_OCTET_STRING *astring) {
Tcl_Obj *resultPtr = NULL;
int len = 0;
unsigned char buffer[1024];
if (astring != NULL) {
len = String_to_Hex((unsigned char *)ASN1_STRING_get0_data(astring),
ASN1_STRING_length(astring), buffer, 1024);
}
resultPtr = Tcl_NewStringObj((char *) &buffer[0], (Tcl_Size) len);
return resultPtr;
}
static int min(int a, int b)
{
return (a < b) ? a : b;
}
/*
* Get Key Usage
*/
Tcl_Obj *Tls_x509KeyUsage(Tcl_Interp *interp, X509 *cert, uint32_t xflags) {
uint32_t usage = X509_get_key_usage(cert);
Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL);
if (listPtr == NULL) {
return NULL;
}
static int max(int a, int b)
{
return (a > b) ? a : b;
if ((xflags & EXFLAG_KUSAGE) && usage < UINT32_MAX) {
if (usage & KU_DIGITAL_SIGNATURE) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Digital Signature", -1));
}
if (usage & KU_NON_REPUDIATION) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Non-Repudiation", -1));
}
if (usage & KU_KEY_ENCIPHERMENT) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Key Encipherment", -1));
}
if (usage & KU_DATA_ENCIPHERMENT) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Data Encipherment", -1));
}
if (usage & KU_KEY_AGREEMENT) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Key Agreement", -1));
}
if (usage & KU_KEY_CERT_SIGN) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Certificate Signing", -1));
}
if (usage & KU_CRL_SIGN) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("CRL Signing", -1));
}
if (usage & KU_ENCIPHER_ONLY) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Encipher Only", -1));
}
if (usage & KU_DECIPHER_ONLY) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Decipher Only", -1));
}
} else {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("unrestricted", -1));
}
return listPtr;
}
/*
* Get Certificate Purpose
*/
char *Tls_x509Purpose(X509 *cert) {
char *purpose = NULL;
* ASN1_UTCTIME_tostr --
if (X509_check_purpose(cert, X509_PURPOSE_SSL_CLIENT, 0) > 0) {
purpose = "SSL Client";
} else if (X509_check_purpose(cert, X509_PURPOSE_SSL_SERVER, 0) > 0) {
purpose = "SSL Server";
} else if (X509_check_purpose(cert, X509_PURPOSE_NS_SSL_SERVER, 0) > 0) {
purpose = "MSS SSL Server";
} else if (X509_check_purpose(cert, X509_PURPOSE_SMIME_SIGN, 0) > 0) {
purpose = "SMIME Signing";
} else if (X509_check_purpose(cert, X509_PURPOSE_SMIME_ENCRYPT, 0) > 0) {
purpose = "SMIME Encryption";
} else if (X509_check_purpose(cert, X509_PURPOSE_CRL_SIGN, 0) > 0) {
purpose = "CRL Signing";
} else if (X509_check_purpose(cert, X509_PURPOSE_ANY, 0) > 0) {
purpose = "Any";
} else if (X509_check_purpose(cert, X509_PURPOSE_OCSP_HELPER, 0) > 0) {
purpose = "OCSP Helper";
} else if (X509_check_purpose(cert, X509_PURPOSE_TIMESTAMP_SIGN, 0) > 0) {
purpose = "Timestamp Signing";
} else {
purpose = "";
}
return purpose;
}
/*
* For each purpose, get certificate applicability
*/
Tcl_Obj *Tls_x509Purposes(Tcl_Interp *interp, X509 *cert) {
Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL);
static char *
ASN1_UTCTIME_tostr(ASN1_UTCTIME *tm)
{
static char bp[128];
char *v;
int gmt=0;
static char *mon[12]={
"Jan","Feb","Mar","Apr","May","Jun",
"Jul","Aug","Sep","Oct","Nov","Dec"};
int i;
int y=0,M=0,d=0,h=0,m=0,s=0;
i=tm->length;
v=(char *)tm->data;
X509_PURPOSE *ptmp;
if (listPtr == NULL) {
return NULL;
}
for (int i = 0; i < X509_PURPOSE_get_count(); i++) {
ptmp = X509_PURPOSE_get0(i);
Tcl_Obj *tmpPtr = Tcl_NewListObj(0, NULL);
for (int j = 0; j < 2; j++) {
int idret = X509_check_purpose(cert, X509_PURPOSE_get_id(ptmp), j);
Tcl_ListObjAppendElement(interp, tmpPtr, Tcl_NewStringObj(j ? "CA" : "nonCA", -1));
Tcl_ListObjAppendElement(interp, tmpPtr, Tcl_NewStringObj(idret == 1 ? "Yes" : "No", -1));
}
LAPPEND_OBJ(interp, listPtr, X509_PURPOSE_get0_name(ptmp), tmpPtr);
}
return listPtr;
}
/*
* Get Subject Alternate Names (SAN) and Issuer Alternate Names
*/
Tcl_Obj *Tls_x509Names(Tcl_Interp *interp, X509 *cert, int nid, BIO *bio) {
STACK_OF(GENERAL_NAME) *names;
Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL);
int len;
char buffer[1024];
if (listPtr == NULL) {
return NULL;
}
if ((names = X509_get_ext_d2i(cert, nid, NULL, NULL)) != NULL) {
for (int i=0; i < sk_GENERAL_NAME_num(names); i++) {
const GENERAL_NAME *name = sk_GENERAL_NAME_value(names, i);
len = BIO_to_Buffer(name && GENERAL_NAME_print(bio, (GENERAL_NAME *) name), bio, buffer, 1024);
LAPPEND_STR(interp, listPtr, NULL, buffer, (Tcl_Size) len);
}
sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free);
}
return listPtr;
}
/*
* Get EXtended Key Usage
*/
Tcl_Obj *Tls_x509ExtKeyUsage(Tcl_Interp *interp, X509 *cert, uint32_t xflags) {
uint32_t usage = X509_get_key_usage(cert);
Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL);
if (listPtr == NULL) {
return NULL;
}
if ((xflags & EXFLAG_XKUSAGE) && usage < UINT32_MAX) {
usage = X509_get_extended_key_usage(cert);
if (usage & XKU_SSL_SERVER) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("TLS Web Server Authentication", -1));
}
if (usage & XKU_SSL_CLIENT) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("TLS Web Client Authentication", -1));
}
if (usage & XKU_SMIME) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("E-mail Protection", -1));
}
if (usage & XKU_CODE_SIGN) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Code Signing", -1));
}
if (usage & XKU_SGC) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("SGC", -1));
}
if (usage & XKU_OCSP_SIGN) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("OCSP Signing", -1));
}
if (usage & XKU_TIMESTAMP) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Time Stamping", -1));
}
if (usage & XKU_DVCS ) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("DVCS", -1));
}
if (usage & XKU_ANYEKU) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Any Extended Key Usage", -1));
}
} else {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("unrestricted", -1));
}
return listPtr;
}
/*
* Get CRL Distribution Points
*/
Tcl_Obj *Tls_x509CrlDp(Tcl_Interp *interp, X509 *cert) {
STACK_OF(DIST_POINT) *crl;
Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL);
if (i < 10) goto err;
if (v[i-1] == 'Z') gmt=1;
for (i=0; i<10; i++)
if ((v[i] > '9') || (v[i] < '0')) goto err;
if (listPtr == NULL) {
return NULL;
}
if ((crl = X509_get_ext_d2i(cert, NID_crl_distribution_points, NULL, NULL)) != NULL) {
for (int i=0; i < sk_DIST_POINT_num(crl); i++) {
DIST_POINT *dp = sk_DIST_POINT_value(crl, i);
DIST_POINT_NAME *distpoint = dp->distpoint;
y= (v[0]-'0')*10+(v[1]-'0');
if (y < 70) y+=100;
if (distpoint->type == 0) {
M= (v[2]-'0')*10+(v[3]-'0');
if ((M > 12) || (M < 1)) goto err;
/* full-name GENERALIZEDNAME */
for (int j = 0; j < sk_GENERAL_NAME_num(distpoint->name.fullname); j++) {
GENERAL_NAME *gen = sk_GENERAL_NAME_value(distpoint->name.fullname, j);
int type;
ASN1_STRING *uri = GENERAL_NAME_get0_value(gen, &type);
if (type == GEN_URI) {
d= (v[4]-'0')*10+(v[5]-'0');
h= (v[6]-'0')*10+(v[7]-'0');
m= (v[8]-'0')*10+(v[9]-'0');
if ( (v[10] >= '0') && (v[10] <= '9') &&
(v[11] >= '0') && (v[11] <= '9'))
LAPPEND_STR(interp, listPtr, (char *) NULL, (char *) ASN1_STRING_get0_data(uri), (Tcl_Size) ASN1_STRING_length(uri));
}
}
} else if (distpoint->type == 1) {
/* relative-name X509NAME */
STACK_OF(X509_NAME_ENTRY) *sk_relname = distpoint->name.relativename;
for (int j = 0; j < sk_X509_NAME_ENTRY_num(sk_relname); j++) {
X509_NAME_ENTRY *e = sk_X509_NAME_ENTRY_value(sk_relname, j);
ASN1_STRING *d = X509_NAME_ENTRY_get_data(e);
LAPPEND_STR(interp, listPtr, (char *) NULL, (char *) ASN1_STRING_data(d), (Tcl_Size) ASN1_STRING_length(d));
}
}
}
CRL_DIST_POINTS_free(crl);
}
return listPtr;
}
s= (v[10]-'0')*10+(v[11]-'0');
/*
* Get On-line Certificate Status Protocol (OSCP) URL
*/
Tcl_Obj *Tls_x509Oscp(Tcl_Interp *interp, X509 *cert) {
STACK_OF(OPENSSL_STRING) *ocsp;
Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL);
if (listPtr == NULL) {
return NULL;
}
sprintf(bp,"%s %2d %02d:%02d:%02d %d%s",
mon[M-1],d,h,m,s,y+1900,(gmt)?" GMT":"");
return bp;
err:
return "Bad time value";
if ((ocsp = X509_get1_ocsp(cert)) != NULL) {
for (int i = 0; i < sk_OPENSSL_STRING_num(ocsp); i++) {
LAPPEND_STR(interp, listPtr, NULL, sk_OPENSSL_STRING_value(ocsp, i), -1);
}
X509_email_free(ocsp);
}
return listPtr;
}
/*
* Get Certificate Authority (CA) Issuers URL
*/
Tcl_Obj *Tls_x509CaIssuers(Tcl_Interp *interp, X509 *cert) {
STACK_OF(ACCESS_DESCRIPTION) *ads;
ACCESS_DESCRIPTION *ad;
Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL);
unsigned char *buf;
int len;
if ((ads = X509_get_ext_d2i(cert, NID_info_access, NULL, NULL)) != NULL) {
for (int i = 0; i < sk_ACCESS_DESCRIPTION_num(ads); i++) {
ad = sk_ACCESS_DESCRIPTION_value(ads, i);
if (OBJ_obj2nid(ad->method) == NID_ad_ca_issuers && ad->location) {
if (ad->location->type == GEN_URI) {
len = ASN1_STRING_to_UTF8(&buf, ad->location->d.uniformResourceIdentifier);
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj((char *) buf, (Tcl_Size) len));
OPENSSL_free(buf);
break;
}
}
}
/* sk_ACCESS_DESCRIPTION_pop_free(ads, ACCESS_DESCRIPTION_free); */
AUTHORITY_INFO_ACCESS_free(ads);
}
return listPtr;
}
/*
*------------------------------------------------------*
*
* Tls_NewX509Obj --
*
|
︙ | | |
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* Result:
* A Tcl List Object representing the provided
* X509 certificate.
*
*------------------------------------------------------*
*/
#define CERT_STR_SIZE 16384
Tcl_Obj*
Tls_NewX509Obj( interp, cert)
Tls_NewX509Obj(Tcl_Interp *interp, X509 *cert) {
Tcl_Interp *interp;
X509 *cert;
{
Tcl_Obj *certPtr = Tcl_NewListObj( 0, NULL);
BIO *bio;
int n;
unsigned long flags;
BIO *bio = BIO_new(BIO_s_mem());
int mdnid, pknid, bits, len;
unsigned int ulen;
char subject[BUFSIZ];
char issuer[BUFSIZ];
char serial[BUFSIZ];
char notBefore[BUFSIZ];
char notAfter[BUFSIZ];
char certStr[CERT_STR_SIZE], *certStr_p;
int certStr_len, toRead;
#ifndef NO_SSL_SHA
int shai;
uint32_t xflags;
char sha_hash_ascii[SHA_DIGEST_LENGTH * 2 + 1];
unsigned char sha_hash_binary[SHA_DIGEST_LENGTH];
const char *shachars="0123456789ABCDEF";
char buffer[BUFSIZ];
sha_hash_ascii[SHA_DIGEST_LENGTH * 2] = '\0';
#endif
unsigned char md[EVP_MAX_MD_SIZE];
certStr[0] = 0;
if ((bio = BIO_new(BIO_s_mem())) == NULL) {
subject[0] = 0;
issuer[0] = 0;
serial[0] = 0;
} else {
flags = XN_FLAG_RFC2253 | ASN1_STRFLGS_UTF8_CONVERT;
unsigned long flags = XN_FLAG_RFC2253 | ASN1_STRFLGS_UTF8_CONVERT;
flags &= ~ASN1_STRFLGS_ESC_MSB;
if (interp == NULL || cert == NULL || bio == NULL || certPtr == NULL) {
return NULL;
}
/* Signature algorithm and value - RFC 5280 section 4.1.1.2 and 4.1.1.3 */
/* signatureAlgorithm is the id of the cryptographic algorithm used by the
CA to sign this cert. signatureValue is the digital signature computed
upon the ASN.1 DER encoded tbsCertificate. */
{
const X509_ALGOR *sig_alg;
const ASN1_BIT_STRING *sig;
int sig_nid;
X509_get0_signature(&sig, &sig_alg, cert);
/* sig_nid = X509_get_signature_nid(cert) */
sig_nid = OBJ_obj2nid(sig_alg->algorithm);
LAPPEND_STR(interp, certPtr, "signatureAlgorithm", OBJ_nid2ln(sig_nid), -1);
len = (sig_nid != NID_undef) ? String_to_Hex(sig->data, sig->length, (unsigned char *) buffer, BUFSIZ) : 0;
LAPPEND_STR(interp, certPtr, "signatureValue", buffer, (Tcl_Size) len);
}
/* Version of the encoded certificate - RFC 5280 section 4.1.2.1 */
LAPPEND_LONG(interp, certPtr, "version", X509_get_version(cert)+1);
/* Unique number assigned by CA to certificate - RFC 5280 section 4.1.2.2 */
len = BIO_to_Buffer(i2a_ASN1_INTEGER(bio, X509_get0_serialNumber(cert)), bio, buffer, BUFSIZ);
LAPPEND_STR(interp, certPtr, "serialNumber", buffer, (Tcl_Size) len);
/* Signature algorithm used by the CA to sign the certificate. Must match
signatureAlgorithm. RFC 5280 section 4.1.2.3 */
LAPPEND_STR(interp, certPtr, "signature", OBJ_nid2ln(X509_get_signature_nid(cert)), -1);
/* Issuer identifies the entity that signed and issued the cert. RFC 5280 section 4.1.2.4 */
X509_NAME_print_ex(bio, X509_get_subject_name(cert), 0, flags);
n = BIO_read(bio, subject, min(BIO_pending(bio), BUFSIZ - 1));
n = max(n, 0);
subject[n] = 0;
(void)BIO_flush(bio);
len = BIO_to_Buffer(X509_NAME_print_ex(bio, X509_get_issuer_name(cert), 0, flags), bio, buffer, BUFSIZ);
LAPPEND_STR(interp, certPtr, "issuer", buffer, (Tcl_Size) len);
/* Certificate validity period is the interval the CA warrants that it will
maintain info on the status of the certificate. RFC 5280 section 4.1.2.5 */
/* Get Validity - Not Before */
len = BIO_to_Buffer(ASN1_TIME_print(bio, X509_get0_notBefore(cert)), bio, buffer, BUFSIZ);
LAPPEND_STR(interp, certPtr, "notBefore", buffer, (Tcl_Size) len);
/* Get Validity - Not After */
len = BIO_to_Buffer(ASN1_TIME_print(bio, X509_get0_notAfter(cert)), bio, buffer, BUFSIZ);
LAPPEND_STR(interp, certPtr, "notAfter", buffer, (Tcl_Size) len);
/* Subject identifies the entity associated with the public key stored in
the subject public key field. RFC 5280 section 4.1.2.6 */
len = BIO_to_Buffer(X509_NAME_print_ex(bio, X509_get_subject_name(cert), 0, flags), bio, buffer, BUFSIZ);
LAPPEND_STR(interp, certPtr, "subject", buffer, (Tcl_Size) len);
/* SHA1 Digest (Fingerprint) of cert - DER representation */
if (X509_digest(cert, EVP_sha1(), md, &ulen)) {
len = String_to_Hex(md, len, (unsigned char *) buffer, BUFSIZ);
LAPPEND_STR(interp, certPtr, "sha1_hash", buffer, (Tcl_Size) ulen);
}
/* SHA256 Digest (Fingerprint) of cert - DER representation */
if (X509_digest(cert, EVP_sha256(), md, &ulen)) {
len = String_to_Hex(md, len, (unsigned char *) buffer, BUFSIZ);
LAPPEND_STR(interp, certPtr, "sha256_hash", buffer, (Tcl_Size) ulen);
}
X509_NAME_print_ex(bio, X509_get_issuer_name(cert), 0, flags);
n = BIO_read(bio, issuer, min(BIO_pending(bio), BUFSIZ - 1));
n = max(n, 0);
issuer[n] = 0;
(void)BIO_flush(bio);
i2a_ASN1_INTEGER(bio, X509_get_serialNumber(cert));
n = BIO_read(bio, serial, min(BIO_pending(bio), BUFSIZ - 1));
n = max(n, 0);
serial[n] = 0;
(void)BIO_flush(bio);
if (PEM_write_bio_X509(bio, cert)) {
certStr_p = certStr;
certStr_len = 0;
while (1) {
toRead = min(BIO_pending(bio), CERT_STR_SIZE - certStr_len - 1);
toRead = min(toRead, BUFSIZ);
if (toRead == 0) {
break;
}
dprintf("Reading %i bytes from the certificate...", toRead);
n = BIO_read(bio, certStr_p, toRead);
if (n <= 0) {
break;
/* Subject Public Key Info specifies the public key and identifies the
algorithm with which the key is used. RFC 5280 section 4.1.2.7 */
if (X509_get_signature_info(cert, &mdnid, &pknid, &bits, &xflags)) {
ASN1_BIT_STRING *key;
unsigned int n;
LAPPEND_STR(interp, certPtr, "signingDigest", OBJ_nid2ln(mdnid), -1);
LAPPEND_STR(interp, certPtr, "publicKeyAlgorithm", OBJ_nid2ln(pknid), -1);
LAPPEND_INT(interp, certPtr, "bits", bits); /* Effective security bits */
key = X509_get0_pubkey_bitstr(cert);
len = String_to_Hex(key->data, key->length, (unsigned char *) buffer, BUFSIZ);
LAPPEND_STR(interp, certPtr, "publicKey", buffer, (Tcl_Size) len);
len = 0;
if (X509_pubkey_digest(cert, EVP_get_digestbynid(pknid), md, &n)) {
len = String_to_Hex(md, (int) n, (unsigned char *) buffer, BUFSIZ);
}
LAPPEND_STR(interp, certPtr, "publicKeyHash", buffer, (Tcl_Size) len);
/* digest of the DER representation of the certificate */
len = 0;
if (X509_digest(cert, EVP_get_digestbynid(mdnid), md, &n)) {
len = String_to_Hex(md, (int) n, (unsigned char *) buffer, BUFSIZ);
}
LAPPEND_STR(interp, certPtr, "signatureHash", buffer, (Tcl_Size) len);
}
/* Certificate Purpose. Call before checking for extensions. */
LAPPEND_STR(interp, certPtr, "purpose", Tls_x509Purpose(cert), -1);
LAPPEND_OBJ(interp, certPtr, "certificatePurpose", Tls_x509Purposes(interp, cert));
/* Get extensions flags */
xflags = X509_get_extension_flags(cert);
LAPPEND_INT(interp, certPtr, "extFlags", xflags);
/* Check if cert was issued by CA cert issuer or self signed */
LAPPEND_BOOL(interp, certPtr, "selfIssued", xflags & EXFLAG_SI);
LAPPEND_BOOL(interp, certPtr, "selfSigned", xflags & EXFLAG_SS);
LAPPEND_BOOL(interp, certPtr, "isProxyCert", xflags & EXFLAG_PROXY);
LAPPEND_BOOL(interp, certPtr, "extInvalid", xflags & EXFLAG_INVALID);
LAPPEND_BOOL(interp, certPtr, "isCACert", X509_check_ca(cert));
/* The Unique Ids are used to handle the possibility of reuse of subject
and/or issuer names over time. RFC 5280 section 4.1.2.8 */
{
const ASN1_BIT_STRING *iuid, *suid;
X509_get0_uids(cert, &iuid, &suid);
Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("issuerUniqueId", -1));
if (iuid != NULL) {
Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewByteArrayObj((const unsigned char *)iuid->data, (Tcl_Size) iuid->length));
} else {
Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("", -1));
}
Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("subjectUniqueId", -1));
if (suid != NULL) {
Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewByteArrayObj((const unsigned char *)suid->data, (Tcl_Size) suid->length));
} else {
Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("", -1));
}
}
/* X509 v3 Extensions - RFC 5280 section 4.1.2.9 */
LAPPEND_INT(interp, certPtr, "extCount", X509_get_ext_count(cert));
LAPPEND_OBJ(interp, certPtr, "extensions", Tls_x509Extensions(interp, cert));
/* Authority Key Identifier (AKI) is the Subject Key Identifier (SKI) of
its signer (the CA). RFC 5280 section 4.2.1.1, NID_authority_key_identifier */
LAPPEND_OBJ(interp, certPtr, "authorityKeyIdentifier",
Tls_x509Identifier(X509_get0_authority_key_id(cert)));
/* Subject Key Identifier (SKI) is used to identify certificates that contain
a particular public key. RFC 5280 section 4.2.1.2, NID_subject_key_identifier */
LAPPEND_OBJ(interp, certPtr, "subjectKeyIdentifier",
Tls_x509Identifier(X509_get0_subject_key_id(cert)));
/* Key usage extension defines the purpose (e.g., encipherment, signature, certificate
signing) of the key in the certificate. RFC 5280 section 4.2.1.3, NID_key_usage */
LAPPEND_OBJ(interp, certPtr, "keyUsage", Tls_x509KeyUsage(interp, cert, xflags));
/* Certificate Policies - indicates the issuing CA considers its issuerDomainPolicy
equivalent to the subject CA's subjectDomainPolicy. RFC 5280 section 4.2.1.4, NID_certificate_policies */
if (xflags & EXFLAG_INVALID_POLICY) {
/* Reject cert */
}
/* Policy Mappings - RFC 5280 section 4.2.1.5, NID_policy_mappings */
/* Subject Alternative Name (SAN) contains additional URLs, DNS names, or IP
addresses bound to certificate. RFC 5280 section 4.2.1.6, NID_subject_alt_name */
LAPPEND_OBJ(interp, certPtr, "subjectAltName", Tls_x509Names(interp, cert, NID_subject_alt_name, bio));
/* Issuer Alternative Name is used to associate Internet style identities
with the certificate issuer. RFC 5280 section 4.2.1.7, NID_issuer_alt_name */
LAPPEND_OBJ(interp, certPtr, "issuerAltName", Tls_x509Names(interp, cert, NID_issuer_alt_name, bio));
/* Subject Directory Attributes provides identification attributes (e.g., nationality)
of the subject. RFC 5280 section 4.2.1.8 (subjectDirectoryAttributes) */
/* Basic Constraints identifies whether the subject of the cert is a CA and
the max depth of valid cert paths for this cert. RFC 5280 section 4.2.1.9, NID_basic_constraints */
if (!(xflags & EXFLAG_PROXY)) {
LAPPEND_LONG(interp, certPtr, "pathLen", X509_get_pathlen(cert));
} else {
LAPPEND_LONG(interp, certPtr, "pathLen", X509_get_proxy_pathlen(cert));
}
LAPPEND_BOOL(interp, certPtr, "basicConstraintsCA", xflags & EXFLAG_CA);
/* Name Constraints is only used in CA certs to indicate the name space for
all subject names in subsequent certificates in a certification path
MUST be located. RFC 5280 section 4.2.1.10, NID_name_constraints */
/* Policy Constraints is only used in CA certs to limit the length of a
cert chain for that CA. RFC 5280 section 4.2.1.11, NID_policy_constraints */
/* Extended Key Usage indicates the purposes the certified public key may be
used, beyond the basic purposes. RFC 5280 section 4.2.1.12, NID_ext_key_usage */
LAPPEND_OBJ(interp, certPtr, "extendedKeyUsage", Tls_x509ExtKeyUsage(interp, cert, xflags));
/* CRL Distribution Points identifies where CRL information can be obtained.
RFC 5280 section 4.2.1.13*/
LAPPEND_OBJ(interp, certPtr, "crlDistributionPoints", Tls_x509CrlDp(interp, cert));
/* Freshest CRL extension */
if (xflags & EXFLAG_FRESHEST) {
}
/* Authority Information Access indicates how to access info and services
for the certificate issuer. RFC 5280 section 4.2.2.1, NID_info_access */
/* Get On-line Certificate Status Protocol (OSCP) Responders URL */
LAPPEND_OBJ(interp, certPtr, "ocspResponders", Tls_x509Oscp(interp, cert));
/* Get Certificate Authority (CA) Issuers URL */
LAPPEND_OBJ(interp, certPtr, "caIssuers", Tls_x509CaIssuers(interp, cert));
/* Subject Information Access - RFC 5280 section 4.2.2.2, NID_sinfo_access */
/* Certificate Alias. If uses a PKCS#12 structure, alias will reflect the
friendlyName attribute (RFC 2985). */
{
len = 0;
unsigned char *string = X509_alias_get0(cert, &len);
LAPPEND_STR(interp, certPtr, "alias", (char *) string, (Tcl_Size) len);
string = X509_keyid_get0(cert, &len);
LAPPEND_STR(interp, certPtr, "keyId", (char *) string, (Tcl_Size) len);
}
certStr_len += n;
certStr_p += n;
}
*certStr_p = '\0';
(void)BIO_flush(bio);
/* Certificate and dump all data */
{
char certStr[CERT_STR_SIZE];
/* Get certificate */
len = BIO_to_Buffer(PEM_write_bio_X509(bio, cert), bio, certStr, CERT_STR_SIZE);
LAPPEND_STR(interp, certPtr, "certificate", certStr, (Tcl_Size) len);
/* Get all cert info */
len = BIO_to_Buffer(X509_print_ex(bio, cert, flags, 0), bio, certStr, CERT_STR_SIZE);
LAPPEND_STR(interp, certPtr, "all", certStr, (Tcl_Size) len);
}
BIO_free(bio);
}
strcpy( notBefore, ASN1_UTCTIME_tostr( X509_get_notBefore(cert) ));
strcpy( notAfter, ASN1_UTCTIME_tostr( X509_get_notAfter(cert) ));
#ifndef NO_SSL_SHA
X509_digest(cert, EVP_sha1(), sha_hash_binary, NULL);
for (shai = 0; shai < SHA_DIGEST_LENGTH; shai++) {
sha_hash_ascii[shai * 2] = shachars[(sha_hash_binary[shai] & 0xF0) >> 4];
sha_hash_ascii[shai * 2 + 1] = shachars[(sha_hash_binary[shai] & 0x0F)];
}
Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj("sha1_hash", -1) );
Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj(sha_hash_ascii, SHA_DIGEST_LENGTH * 2) );
#endif
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( "subject", -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( subject, -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( "issuer", -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( issuer, -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( "notBefore", -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( notBefore, -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( "notAfter", -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( notAfter, -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( "serial", -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( serial, -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( "certificate", -1) );
Tcl_ListObjAppendElement( interp, certPtr,
Tcl_NewStringObj( certStr, -1) );
return certPtr;
}
|