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/*
* Copyright (C) 1997-2000 Matt Newman <matt@novadigm.com>
*
* Provides BIO layer to interface OpenSSL to TCL.
*/
#include "tlsInt.h"
/* Called by SSL_write() */
static int BioWrite(BIO *bio, const char *buf, int bufLen) {
Tcl_Channel chan;
Tcl_Size 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, (Tcl_Size) bufLen);
tclEofChan = Tcl_Eof(chan);
tclErrno = Tcl_GetErrno();
dprintf("[chan=%p] BioWrite(%d) -> %" TCL_SIZE_MODIFIER "d [tclEof=%d; tclErrno=%d]",
(void *) chan, bufLen, ret, tclEofChan, tclErrno);
BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);
if (tclEofChan && ret <= 0) {
dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
Tcl_SetErrno(ECONNRESET);
ret = 0;
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/*
* Copyright (C) 1997-2000 Matt Newman <matt@novadigm.com>
*
* Provides BIO layer to interface OpenSSL to Tcl.
*/
#include "tlsInt.h"
/* Called by SSL_write() */
static int BioWrite(BIO *bio, const char *buf, int bufLen) {
Tcl_Channel chan;
Tcl_Size 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, (Tcl_Size)bufLen);
tclEofChan = Tcl_Eof(chan);
tclErrno = Tcl_GetErrno();
dprintf("[chan=%p] BioWrite(%d) -> %" TCL_SIZE_MODIFIER "d [tclEof=%d; tclErrno=%d]",
(void *) chan, bufLen, ret, tclEofChan, tclErrno);
BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);
if (tclEofChan && ret <= 0) {
dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
Tcl_SetErrno(ECONNRESET);
ret = 0;
} 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");
} else {
dprintf("It's an unexpected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
}
} else {
dprintf("Successfully wrote %" TCL_SIZE_MODIFIER "d bytes of data", ret);
}
if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
if (BIO_should_read(bio)) {
dprintf("Setting should retry read flag");
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dprintf("[chan=%p] BioRead(%p, <buf>, %d)", (void *) chan, (void *) bio, bufLen);
if (buf == NULL) {
return 0;
}
ret = Tcl_ReadRaw(chan, buf, (Tcl_Size) bufLen);
tclEofChan = Tcl_Eof(chan);
tclErrno = Tcl_GetErrno();
dprintf("[chan=%p] BioRead(%d) -> %" TCL_SIZE_MODIFIER "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 EOF while reading, returning a Connection Reset error which maps to Soft EOF");
Tcl_SetErrno(ECONNRESET);
ret = 0;
dprintf("BioRead(%p, <buf>, %d) [%p] returning %" TCL_SIZE_MODIFIER "d", (void *) bio,
bufLen, (void *) chan, ret);
return((int) ret);
}
static int BioPuts(BIO *bio, const char *str) {
dprintf("BioPuts(%p, <string:%p>) called", bio, str);
return(BioWrite(bio, str, (int) strlen(str)));
}
static long BioCtrl(BIO *bio, int cmd, long num, void *ptr) {
Tcl_Channel chan;
long ret = 1;
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
dprintf("BioCtrl(%p, 0x%x, 0x%lx, %p)", (void *) bio, cmd, num, ptr);
switch (cmd) {
case BIO_CTRL_RESET:
dprintf("Got BIO_CTRL_RESET");
num = 0;
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dprintf("[chan=%p] BioRead(%p, <buf>, %d)", (void *) chan, (void *) bio, bufLen);
if (buf == NULL) {
return 0;
}
ret = Tcl_ReadRaw(chan, buf, (Tcl_Size)bufLen);
tclEofChan = Tcl_Eof(chan);
tclErrno = Tcl_GetErrno();
dprintf("[chan=%p] BioRead(%d) -> %" TCL_SIZE_MODIFIER "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 EOF while reading, returning a Connection Reset error which maps to Soft EOF");
Tcl_SetErrno(ECONNRESET);
ret = 0;
} 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");
} else {
dprintf("It's an unexpected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
}
} else {
dprintf("Successfully read %" TCL_SIZE_MODIFIER "d bytes of data", ret);
}
if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
if (BIO_should_write(bio)) {
dprintf("Setting should retry write flag");
BIO_set_retry_write(bio);
}
}
dprintf("BioRead(%p, <buf>, %d) [%p] returning %" TCL_SIZE_MODIFIER "d",
(void *)bio, bufLen, (void *) chan, ret);
return (int)ret;
}
static int BioPuts(BIO *bio, const char *str) {
dprintf("BioPuts(%p, <string:%p>) called", bio, str);
return BioWrite(bio, str, (int) strlen(str));
}
static long BioCtrl(BIO *bio, int cmd, long num, void *ptr) {
Tcl_Channel chan;
long ret = 1;
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
dprintf("BioCtrl(%p, 0x%x, 0x%lx, %p)", bio, cmd, num, ptr);
switch (cmd) {
case BIO_CTRL_RESET:
dprintf("Got BIO_CTRL_RESET");
ret = 0;
break;
case BIO_C_FILE_SEEK:
dprintf("Got BIO_C_FILE_SEEK");
ret = 0;
break;
case BIO_C_FILE_TELL:
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case BIO_CTRL_GET_KTLS_RECV:
dprintf("Got BIO_CTRL_GET_KTLS_RECV");
ret = 0;
break;
#endif
default:
dprintf("Got unknown control command (%i)", cmd);
ret = 0;
break;
}
return(ret);
}
static int BioNew(BIO *bio) {
dprintf("BioNew(%p) called", bio);
BIO_set_init(bio, 0);
BIO_set_data(bio, NULL);
BIO_clear_flags(bio, -1);
return(1);
}
static int BioFree(BIO *bio) {
if (bio == NULL) {
return(0);
}
dprintf("BioFree(%p) called", bio);
if (BIO_get_shutdown(bio)) {
if (BIO_get_init(bio)) {
/*shutdown(bio->num, 2) */
/*closesocket(bio->num) */
}
BIO_set_init(bio, 0);
BIO_clear_flags(bio, -1);
}
return(1);
}
BIO *BIO_new_tcl(State *statePtr, int flags) {
BIO *bio;
static BIO_METHOD *BioMethods = NULL;
#ifdef TCLTLS_SSL_USE_FASTPATH
Tcl_Channel parentChannel;
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case BIO_CTRL_GET_KTLS_RECV:
dprintf("Got BIO_CTRL_GET_KTLS_RECV");
ret = 0;
break;
#endif
default:
dprintf("Got unknown control command (%i)", cmd);
ret = -2;
break;
}
return ret;
}
static int BioNew(BIO *bio) {
dprintf("BioNew(%p) called", bio);
BIO_set_init(bio, 0);
BIO_set_data(bio, NULL);
BIO_clear_flags(bio, -1);
return 1;
}
static int BioFree(BIO *bio) {
if (bio == NULL) {
return(0);
}
dprintf("BioFree(%p) called", bio);
if (BIO_get_shutdown(bio)) {
if (BIO_get_init(bio)) {
/*shutdown(bio->num, 2) */
/*closesocket(bio->num) */
}
BIO_set_init(bio, 0);
BIO_clear_flags(bio, -1);
}
return 1;
}
BIO *BIO_new_tcl(State *statePtr, int flags) {
BIO *bio;
static BIO_METHOD *BioMethods = NULL;
#ifdef TCLTLS_SSL_USE_FASTPATH
Tcl_Channel parentChannel;
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