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return(bio);
}
static int BioWrite(BIO *bio, CONST char *buf, int bufLen) {
Tcl_Channel chan;
int ret;
int tclEofChan;
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
dprintf("[chan=%p] BioWrite(%p, <buf>, %d)", (void *)chan, (void *) bio, bufLen);
ret = Tcl_WriteRaw(chan, buf, bufLen);
tclEofChan = Tcl_Eof(chan);
dprintf("[chan=%p] BioWrite(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, Tcl_GetErrno());
BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);
if (ret == 0) {
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), 0);
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("[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 set; ret = -1");
Tcl_SetErrno(ECONNRESET);
ret = -1;
} else {
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);
dprintf("Got non-zero from Tcl_Read or Tcl_ReadRaw; ret == %i", ret);
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return(bio);
}
static int BioWrite(BIO *bio, CONST char *buf, int bufLen) {
Tcl_Channel chan;
int ret;
int tclEofChan, tclErrno;
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
dprintf("[chan=%p] BioWrite(%p, <buf>, %d)", (void *)chan, (void *) bio, bufLen);
ret = Tcl_WriteRaw(chan, buf, bufLen);
tclEofChan = Tcl_Eof(chan);
tclErrno = Tcl_GetErrno();
dprintf("[chan=%p] BioWrite(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, Tcl_GetErrno());
BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);
if (tclEofChan && ret <= 0) {
dprintf("Got %i from Tcl_WriteRaw, and EOF is set; ret = -1", ret);
Tcl_SetErrno(ECONNRESET);
ret = -1;
} else if (ret == 0) {
dprintf("Got 0 from Tcl_WriteRaw, and EOF is not set; ret = 0");
dprintf("Setting retry read flag");
BIO_set_retry_read(bio);
} else if (ret < 0) {
dprintf("We got some kind of I/O error");
if (tclErrno == EAGAIN) {
dprintf("It's EAGAIN");
ret = 0;
} else {
dprintf("It's an unepxected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
Tcl_SetErrno(ECONNRESET);
ret = -1;
}
} else {
dprintf("Successfully wrote some data");
}
if (ret != -1) {
if (BIO_should_read(bio)) {
dprintf("Setting should retry read flag");
BIO_set_retry_read(bio);
}
}
return(ret);
}
static int BioRead(BIO *bio, char *buf, int bufLen) {
Tcl_Channel chan;
int ret = 0;
int tclEofChan, tclErrno;
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
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);
tclErrno = Tcl_GetErrno();
dprintf("[chan=%p] BioRead(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, tclErrno);
BIO_clear_flags(bio, BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY);
if (tclEofChan && ret <= 0) {
dprintf("Got %i from Tcl_Read or Tcl_ReadRaw, and EOF is set; ret = -1", ret);
Tcl_SetErrno(ECONNRESET);
ret = -1;
} else if (ret == 0) {
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);
} else if (ret < 0) {
dprintf("We got some kind of I/O error");
if (tclErrno == EAGAIN) {
dprintf("It's EAGAIN");
ret = 0;
} else {
dprintf("It's an unepxected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
Tcl_SetErrno(ECONNRESET);
ret = -1;
}
} else {
dprintf("Successfully read some data");
}
if (ret != -1) {
if (BIO_should_write(bio)) {
dprintf("Setting should retry write flag");
BIO_set_retry_write(bio);
}
}
dprintf("BioRead(%p, <buf>, %d) [%p] returning %i", (void *) bio, bufLen, (void *) chan, ret);
return(ret);
}
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