36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
-
+
+
+
+
+
+
+
+
+
-
+
+
-
+
-
+
+
-
+
+
-
-
+
+
+
+
+
+
-
+
-
+
-
+
+
+
+
+
+
+
-
-
+
+
-
+
-
+
+
+
+
-
-
-
-
-
+
|
static int BioPuts _ANSI_ARGS_((BIO *h, CONST char *str));
static long BioCtrl _ANSI_ARGS_((BIO *h, int cmd, long arg1, void *ptr));
static int BioNew _ANSI_ARGS_((BIO *h));
static int BioFree _ANSI_ARGS_((BIO *h));
BIO *BIO_new_tcl(State *statePtr, int flags) {
BIO *bio;
Tcl_Channel parentChannel;
const Tcl_ChannelType *parentChannelType;
static BIO_METHOD *BioMethods = NULL;
void *parentChannelFdIn_p, *parentChannelFdOut_p;
int parentChannelFdIn, parentChannelFdOut, parentChannelFd;
int validParentChannelFd;
int tclGetChannelHandleRet;
dprintf("BIO_new_tcl() called");
if (BioMethods == NULL) {
BioMethods = BIO_meth_new(BIO_TYPE_TCL, "tcl");
BIO_meth_set_write(BioMethods, BioWrite);
BIO_meth_set_read(BioMethods, BioRead);
BIO_meth_set_puts(BioMethods, BioPuts);
BIO_meth_set_ctrl(BioMethods, BioCtrl);
BIO_meth_set_create(BioMethods, BioNew);
BIO_meth_set_destroy(BioMethods, BioFree);
}
if (statePtr == NULL) {
dprintf("Asked to setup a NULL state, just creating the initial configuration");
return(NULL);
}
#ifdef TCLTLS_SSL_USE_FASTPATH
/*
* If the channel can be mapped back to a file descriptor, just use the file descriptor
* with the SSL library since it will likely be optimized for this.
*/
parentChannel = Tls_GetParent(statePtr, 0);
parentChannelType = Tcl_GetChannelType(parentChannel);
validParentChannelFd = 0;
if (strcmp(parentChannelType->typeName, "tcp") == 0) {
tclGetChannelHandleRet = Tcl_GetChannelHandle(parentChannel, TCL_READABLE, (ClientData) &parentChannelFdIn_p);
if (tclGetChannelHandleRet == TCL_OK) {
tclGetChannelHandleRet = Tcl_GetChannelHandle(parentChannel, TCL_WRITABLE, (ClientData) &parentChannelFdOut_p);
if (tclGetChannelHandleRet == TCL_OK) {
parentChannelFdIn = PTR2INT(parentChannelFdIn_p);
parentChannelFdOut = PTR2INT(parentChannelFdOut_p);
if (parentChannelFdIn == parentChannelFdOut) {
parentChannelFd = parentChannelFdIn;
validParentChannelFd = 1;
}
}
}
}
if (validParentChannelFd) {
dprintf("We found a shortcut, this channel is backed by a file descriptor: %i", parentChannelFdIn);
bio = BIO_new(BioMethods);
bio = BIO_new_socket(parentChannelFd, flags);
statePtr->flags |= TLS_TCL_FASTPATH;
return(bio);
}
dprintf("Falling back to Tcl I/O for this channel");
#endif
bio = BIO_new(BioMethods);
BIO_set_data(bio, statePtr);
BIO_set_init(bio, 1);
chan = Tls_GetParent((State *) BIO_get_data(bio));
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
dprintf("BioWrite(%p, <buf>, %d) [%p]", (void *) bio, bufLen, (void *) chan);
dprintf("[chan=%p] BioWrite(%p, <buf>, %d)", (void *)chan, (void *) bio, bufLen);
ret = Tcl_WriteRaw(chan, buf, bufLen);
tclEofChan = Tcl_Eof(chan);
dprintf("[%p] BioWrite(%d) -> %d [%d.%d]", (void *) chan, bufLen, ret, Tcl_Eof(chan), Tcl_GetErrno());
if (!Tcl_Eof(chan)) {
BIO_set_retry_write(bio);
if (tclEofChan) {
dprintf("Unable to write bytes and EOF is set, returning in failure");
Tcl_SetErrno(ECONNRESET);
ret = -1;
} else {
dprintf("Unable to write bytes but we do not have EOF set... will retry");
BIO_set_retry_write(bio);
}
}
if (BIO_should_read(bio)) {
BIO_set_retry_read(bio);
}
return(ret);
}
static int BioRead(BIO *bio, char *buf, int bufLen) {
Tcl_Channel chan;
int ret = 0;
int tclEofChan;
chan = Tls_GetParent((State *) BIO_get_data(bio));
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
dprintf("BioRead(%p, <buf>, %d) [%p]", (void *) bio, bufLen, (void *) chan);
dprintf("[chan=%p] BioRead(%p, <buf>, %d)", (void *) chan, (void *) bio, bufLen);
if (buf == NULL) {
return 0;
}
ret = Tcl_ReadRaw(chan, buf, bufLen);
tclEofChan = Tcl_Eof(chan);
dprintf("[%p] BioRead(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, Tcl_GetErrno());
dprintf("[chan=%p] BioRead(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, Tcl_GetErrno());
BIO_clear_flags(bio, BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY);
if (BIO_should_write(bio)) {
dprintf("Setting should retry write flag");
BIO_set_retry_write(bio);
}
if (ret == 0) {
if (!tclEofChan) {
dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is not set -- ret == -1 now");
if (tclEofChan) {
dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is set; ret = -1");
BIO_set_retry_read(bio);
dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is set");
dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is not set; ret = 0");
dprintf("Setting retry read flag");
BIO_set_retry_read(bio);
ret = 0;
}
} else {
dprintf("Got non-zero from Tcl_Read or Tcl_ReadRaw; ret == %i", ret);
}
if (BIO_should_write(bio)) {
BIO_set_retry_write(bio);
}
chan = Tls_GetParent((State *) BIO_get_data(bio));
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
dprintf("BioCtrl(%p, 0x%x, 0x%x, %p)", (void *) bio, (unsigned int) cmd, (unsigned int) num, (void *) ptr);
switch (cmd) {
case BIO_CTRL_RESET:
dprintf("Got BIO_CTRL_RESET");
num = 0;
|