︙ | | |
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|
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1481
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|
-
-
+
-
-
+
+
+
+
+
|
Tls_Free((tls_free_type *) statePtr);
return TCL_ERROR;
}
}
statePtr->ctx = ctx;
/*
* We need to make sure that the channel works in binary (for the
/* Preserve channel config */
* encryption not to get goofed up).
*/
Tcl_DStringInit(&upperChannelTranslation);
Tcl_DStringInit(&upperChannelBlocking);
Tcl_DStringInit(&upperChannelEOFChar);
Tcl_DStringInit(&upperChannelEncoding);
Tcl_GetChannelOption(interp, chan, "-eofchar", &upperChannelEOFChar);
Tcl_GetChannelOption(interp, chan, "-encoding", &upperChannelEncoding);
Tcl_GetChannelOption(interp, chan, "-translation", &upperChannelTranslation);
Tcl_GetChannelOption(interp, chan, "-blocking", &upperChannelBlocking);
/* Ensure the channel works in binary mode (for the encryption not to get goofed up). */
Tcl_SetChannelOption(interp, chan, "-translation", "binary");
Tcl_SetChannelOption(interp, chan, "-blocking", "true");
/* Create stacked channel */
dprintf("Consuming Tcl channel %s", Tcl_GetChannelName(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((tls_free_type *) statePtr);
Tcl_DStringFree(&upperChannelTranslation);
Tcl_DStringFree(&upperChannelEncoding);
Tcl_DStringFree(&upperChannelEOFChar);
Tcl_DStringFree(&upperChannelBlocking);
return TCL_ERROR;
}
/* Restore channel config */
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);
|
︙ | | |
1643
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1659
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|
+
+
|
if (request && post_handshake) {
SSL_set_post_handshake_auth(statePtr->ssl, 1);
}
/* Set client mode */
SSL_set_connect_state(statePtr->ssl);
}
/* Set BIO for read and write operations on SSL object */
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));
|
︙ | | |
1672
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|
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|
-
+
-
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+
-
+
-
-
+
+
-
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-
-
-
+
+
+
+
+
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|
* Side effects:
* May modify the behavior of an IO channel.
*
*-------------------------------------------------------------------
*/
static int
UnimportObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
Tcl_Channel chan, child; /* The stacked and underlying channels */
Tcl_Channel chan, parent; /* The stacked and underlying channels */
Tcl_DString upperChannelTranslation, upperChannelBlocking, upperChannelEncoding, upperChannelEOFChar;
int res = TCL_OK;
(void) clientData;
dprintf("Called");
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "channel");
return TCL_ERROR;
}
/* Validate channel name */
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 */
chan = Tcl_GetTopChannel(chan);
child = Tcl_GetStackedChannel(chan);
parent = Tcl_GetStackedChannel(chan);
/* Verify is a stacked channel */
if (child == NULL) {
if (parent == NULL) {
Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
"\": not a stacked channel", (char *) NULL);
Tcl_SetErrorCode(interp, "TLS", "UNIMPORT", "CHANNEL", "INVALID", (char *) NULL);
return TCL_ERROR;
}
/* Flush any pending data */
if (Tcl_Flush(chan) != TCL_OK) {
return TCL_ERROR;
}
/* Init storage */
Tcl_DStringInit(&upperChannelTranslation);
Tcl_DStringInit(&upperChannelBlocking);
Tcl_DStringInit(&upperChannelEOFChar);
Tcl_DStringInit(&upperChannelEncoding);
/* Get current config - EOL translation, encoding and buffering options are shared between all channels in the stack */
/* Preserve current channel config */
Tcl_GetChannelOption(interp, chan, "-blocking", &upperChannelBlocking);
Tcl_GetChannelOption(interp, chan, "-encoding", &upperChannelEncoding);
Tcl_GetChannelOption(interp, chan, "-eofchar", &upperChannelEOFChar);
Tcl_GetChannelOption(interp, chan, "-translation", &upperChannelTranslation);
/* Unstack the channel and restore underlying channel config */
if (Tcl_UnstackChannel(interp, chan) == TCL_OK) {
/* Unstack the channel */
if (Tcl_UnstackChannel(interp, chan) != TCL_OK) {
Tcl_SetChannelOption(interp, child, "-encoding", Tcl_DStringValue(&upperChannelEncoding));
Tcl_SetChannelOption(interp, child, "-eofchar", Tcl_DStringValue(&upperChannelEOFChar));
Tcl_SetChannelOption(interp, child, "-translation", Tcl_DStringValue(&upperChannelTranslation));
Tcl_SetChannelOption(interp, child, "-blocking", Tcl_DStringValue(&upperChannelBlocking));
} else {
res = TCL_ERROR;
}
/* Restore channel config */
Tcl_SetChannelOption(interp, parent, "-encoding", Tcl_DStringValue(&upperChannelEncoding));
Tcl_SetChannelOption(interp, parent, "-eofchar", Tcl_DStringValue(&upperChannelEOFChar));
Tcl_SetChannelOption(interp, parent, "-translation", Tcl_DStringValue(&upperChannelTranslation));
Tcl_SetChannelOption(interp, parent, "-blocking", Tcl_DStringValue(&upperChannelBlocking));
/* Clean-up */
Tcl_DStringFree(&upperChannelTranslation);
Tcl_DStringFree(&upperChannelEncoding);
Tcl_DStringFree(&upperChannelEOFChar);
Tcl_DStringFree(&upperChannelBlocking);
return res;
}
|
︙ | | |
1
2
3
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5
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|
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40
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|
+
+
+
+
-
+
+
+
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
|
/*
* Provides Custom BIO layer to interface OpenSSL with TCL. These
* functions directly interface between the IO channel and BIO buffers.
*
* Copyright (C) 1997-2000 Matt Newman <matt@novadigm.com>
* Copyright (C) 2024 Brian O'Hagan
*
* Provides BIO layer to interface OpenSSL to TCL.
*/
#include "tlsInt.h"
#include <openssl/bio.h>
/* Define BIO methods structure */
static BIO_METHOD *BioMethods = NULL;
/* Called by SSL_write() */
/*
*-----------------------------------------------------------------------------
*
* BioWrite --
*
* This function is used to read encrypted data from the BIO and write it
* into the socket. This function will be called in response to the
* application calling BIO_write_ex() or BIO_write().
*
* Results:
* Returns the number of bytes written to channel, 0 for EOF, or
* -1 for error.
*
* Side effects:
* Writes BIO data to channel.
*
*-----------------------------------------------------------------------------
*/
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);
|
︙ | | |
55
56
57
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61
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|
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|
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
+
|
BIO_set_retry_read(bio);
}
}
return (int) ret;
}
/*
*-----------------------------------------------------------------------------
*
* BioRead --
*
* This function is used to read encrypted data from the socket
* and write it into the BIO. This function will be called in response to
* the application calling BIO_read_ex() or BIO_read().
*
* Results:
* Returns the number of bytes read from channel, 0 for EOF, or -1 for
* error.
*
* Side effects:
* Reads channel data into BIO.
*
*-----------------------------------------------------------------------------
*/
/* Called by SSL_read()*/
static int BioRead(BIO *bio, char *buf, int bufLen) {
Tcl_Channel chan;
Tcl_Size ret = 0;
int tclEofChan, tclErrno;
chan = Tls_GetParent((State *) BIO_get_data(bio), 0);
|
︙ | | |
116
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|
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|
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+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
|
dprintf("BioRead(%p, <buf>, %d) [%p] returning %" TCL_SIZE_MODIFIER "d", (void *) bio,
bufLen, (void *) chan, ret);
return (int) ret;
}
/*
*-----------------------------------------------------------------------------
*
* BioPuts --
*
* This function is used to read a NULL terminated string from the BIO and
* write it to the channel. This function will be called in response to
* the application calling BIO_puts().
*
* Results:
* Returns the number of bytes written to channel or 0 for error.
*
* Side effects:
* Writes data to channel.
*
*-----------------------------------------------------------------------------
*/
static int BioPuts(BIO *bio, const char *str) {
dprintf("BioPuts(%p, <string:%p>) called", bio, str);
return BioWrite(bio, str, (int) strlen(str));
}
/*
*-----------------------------------------------------------------------------
*
* BioCtrl --
*
* This function is used to process control messages in the BIO. This
* function will be called in response to the application calling BIO_ctrl().
*
* Results:
* Function dependent
*
* Side effects:
* Function dependent
*
*-----------------------------------------------------------------------------
*/
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);
|
︙ | | |
220
221
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|
299
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385
386
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|
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
|
dprintf("Got unknown control command (%i)", cmd);
ret = 0;
break;
}
return ret;
}
/*
*-----------------------------------------------------------------------------
*
* BioNew --
*
* This function is used to create a new instance of the BIO. This
* function will be called in response to the application calling BIO_new().
*
* Results:
* Returns boolean success result (1=success, 0=failure)
*
* Side effects:
* Initializes BIO structure.
*
*-----------------------------------------------------------------------------
*/
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;
}
/*
*-----------------------------------------------------------------------------
*
* BioFree --
*
* This function is used to destroy an instance of a BIO. This function
* will be called in response to the application calling BIO_free().
*
* Results:
* Returns boolean success result
*
* Side effects:
* Initializes BIO structure.
*
*-----------------------------------------------------------------------------
*/
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_new_tcl --
*
* This function is used to initialize the BIO method handlers.
*
* Results:
* Returns pointer to BIO or NULL for failure
*
* Side effects:
* Initializes BIO Methods.
*
*-----------------------------------------------------------------------------
*/
BIO *BIO_new_tcl(State *statePtr, int flags) {
BIO *bio;
static BIO_METHOD *BioMethods = NULL;
#ifdef TCLTLS_SSL_USE_FASTPATH
Tcl_Channel parentChannel;
const Tcl_ChannelType *parentChannelType;
void *parentChannelFdIn_p, *parentChannelFdOut_p;
int parentChannelFdIn, parentChannelFdOut, parentChannelFd;
int validParentChannelFd;
int tclGetChannelHandleRet;
|
︙ | | |
318
319
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323
324
|
446
447
448
449
450
451
452
453
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459
460
461
462
463
464
465
466
467
468
469
470
471
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473
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475
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477
478
479
|
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
|
bio = BIO_new(BioMethods);
BIO_set_data(bio, statePtr);
BIO_set_shutdown(bio, flags);
BIO_set_init(bio, 1);
return bio;
}
/*
*-----------------------------------------------------------------------------
*
* BIO_cleanup --
*
* This function is used to destroy a BIO_METHOD structure and free up any
* memory associated with it.
*
* Results:
* Standard TCL result
*
* Side effects:
* Destroys BIO Methods.
*
*-----------------------------------------------------------------------------
*/
int BIO_cleanup () {
dprintf("BIO_cleanup() called");
if (BioMethods != NULL) {
BIO_meth_free(BioMethods);
BioMethods = NULL;
}
return TCL_OK;
}
|
1
2
3
4
5
6
7
8
9
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|
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|
+
+
+
+
-
+
-
-
+
+
+
-
+
-
+
-
-
+
+
-
-
-
-
+
+
+
-
+
-
-
+
+
-
+
-
+
-
+
+
-
+
+
|
/*
* Provides IO functions to interface between the BIO buffers and TCL
* applications when using stacked channels.
*
* Copyright (C) 1997-2000 Matt Newman <matt@novadigm.com>
* Copyright (C) 2000 Ajuba Solutions
* Copyright (C) 2024 Brian O'Hagan
*
* TLS (aka SSL) Channel - can be layered on any bi-directional
* Tcl_Channel (Note: Requires Trf Core Patch)
*
* This was built from scratch based upon observation of OpenSSL 0.9.2B
*
* Addition credit is due for Andreas Kupries (a.kupries@westend.com), 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 <errno.h>
/*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*
* TlsBlockModeProc --
*
* This procedure is invoked by the generic IO level
* to set channel to blocking or nonblocking mode.
* This procedure is invoked by the generic IO level to set channel to
* blocking or nonblocking mode. Called by the generic I/O layer whenever
* the Tcl_SetChannelOption() function is used with option -blocking.
*
* Results:
* 0 if successful or POSIX error code if failed.
*
* Side effects:
* Sets the device into blocking or nonblocking 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
* This procedure is invoked by the generic IO level to perform channel
* type specific cleanup when a SSL socket based channel is closed.
* is closed.
*
* Note: we leave the underlying socket alone, is this right?
*
* Results:
* 0 if successful or POSIX error code if failed.
*
* Side effects:
* Closes the socket of the channel.
*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
static int TlsCloseProc(ClientData instanceData, Tcl_Interp *interp) {
State *statePtr = (State *) instanceData;
dprintf("TlsCloseProc(%p)", (void *) statePtr);
/* Flush any pending data */
Tls_Clean(statePtr);
Tcl_EventuallyFree((ClientData)statePtr, Tls_Free);
return 0;
}
/*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*
* TlsClose2Proc --
*
* Similar to TlsCloseProc, but allows for separate close read and
* write side of channel.
* Similar to TlsCloseProc, but allows for separate close read and write
* side of channel.
*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
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 */
{
State *statePtr = (State *) instanceData;
dprintf("TlsClose2Proc(%p)", (void *) statePtr);
if ((flags & (TCL_CLOSE_READ|TCL_CLOSE_WRITE)) == 0) {
return TlsCloseProc(instanceData, interp);
}
return EINVAL;
}
/*
*------------------------------------------------------*
*-----------------------------------------------------------------------------
*
* Tls_WaitForConnect --
*
* Perform connect (client) or accept (server)
* Perform connect (client) or accept (server) function. Also performs
* equivalent of handshake function.
*
* Result:
* 0 if successful, -1 if failed.
*
* Side effects:
* Issues SSL_accept or SSL_connect
*
*------------------------------------------------------*
*-----------------------------------------------------------------------------
*/
int Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent) {
unsigned long backingError;
int err, rc = 0;
int bioShouldRetry;
*errorCodePtr = 0;
dprintf("WaitForConnect(%p)", (void *) statePtr);
dprintFlags(statePtr);
/* Can also check SSL_is_init_finished(ssl) */
if (!(statePtr->flags & TLS_TCL_INIT)) {
dprintf("Tls_WaitForConnect called on already initialized channel -- returning with immediate success");
return 0;
}
if (statePtr->flags & TLS_TCL_HANDSHAKE_FAILED) {
/*
|
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Tls_Error(statePtr, "Wait for failed handshake");
return -1;
}
for (;;) {
ERR_clear_error();
/* Not initialized yet! Also calls SSL_do_handshake. */
/* 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);
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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.
* This procedure is invoked by the generic IO level to read data from the
* BIo. Equivalent to SSL_read.
* Called by the generic I/O layer whenever the Tcl_Read(), Tcl_ReadChars,
* Tcl_Gets, and Tcl_GetsObj functions are used.
*
* Results:
* 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.
* 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.
*
* Side effects:
* Reads input from the input device of the channel.
*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
static int TlsInputProc(ClientData instanceData, char *buf, int bufSize, int *errorCodePtr) {
unsigned long backingError;
State *statePtr = (State *) instanceData;
int bytesRead, err;
*errorCodePtr = 0;
dprintf("BIO_read(%d)", bufSize);
dprintf("Read(%d)", bufSize);
/* Skip if user verify callback is still running */
if (statePtr->flags & TLS_TCL_CALLBACK) {
dprintf("Callback is running, reading 0 bytes");
return 0;
}
|
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* correctly. Similar fix in TlsOutputProc. - hobbs
*/
ERR_clear_error();
/* BIO_read, where 0 means EOF and -1 means error */
bytesRead = BIO_read(statePtr->bio, buf, bufSize);
dprintf("BIO_read -> %d", bytesRead);
/* Get error is more comprehensive than SSL_want */
err = SSL_get_error(statePtr->ssl, bytesRead);
backingError = ERR_get_error();
if (bytesRead <= 0) {
if (BIO_should_retry(statePtr->bio)) {
dprintf("Read failed with code=%d, bytes read=%d: should retry", err, bytesRead);
/* Some docs imply we should redo the BIO_read now */
|
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*errorCodePtr = Tcl_GetErrno();
bytesRead = -1;
Tls_Error(statePtr, ERR_reason_error_string(backingError));
}
break;
case SSL_ERROR_ZERO_RETURN:
/* Peer has closed the connection for writing by sending the close_notify alert. No more data can be read. */
/* Peer has closed the connection by sending the close_notify alert. Can't read, but can write. */
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_ASYNC:
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}
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.
* This procedure is invoked by the generic IO level to write data to
* the BIO. Equivalent to SSL_write. Called by the
* generic I/O layer whenever the Tcl_Write(), Tcl_WriteChars,
* TTcl_WriteObj functions are used.
*
* Results:
* 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(ClientData instanceData, const char *buf, int toWrite, int *errorCodePtr) {
unsigned long backingError;
State *statePtr = (State *) instanceData;
int written, err;
*errorCodePtr = 0;
dprintf("BIO_write(%p, %d)", (void *) statePtr, toWrite);
dprintf("Write(%p, %d)", (void *) statePtr, toWrite);
dprintBuffer(buf, toWrite);
/* Skip if user verify callback is still running */
if (statePtr->flags & TLS_TCL_CALLBACK) {
dprintf("Don't process output while callbacks are running");
written = -1;
*errorCodePtr = EAGAIN;
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* work correctly. Similar fix in TlsInputProc. - hobbs
*/
ERR_clear_error();
/* SSL_write will return 1 for success or 0 for failure */
written = BIO_write(statePtr->bio, buf, toWrite);
dprintf("BIO_write(%p, %d) -> [%d]", (void *) statePtr, toWrite, written);
/* Get error is more comprehensive than SSL_want */
err = SSL_get_error(statePtr->ssl, written);
backingError = ERR_get_error();
if (written <= 0) {
if (BIO_should_retry(statePtr->bio)) {
dprintf("Write failed with code %d, bytes written=%d: should retry", err, written);
} else {
|
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*errorCodePtr = Tcl_GetErrno();
written = -1;
Tls_Error(statePtr, ERR_reason_error_string(backingError));
}
break;
case SSL_ERROR_ZERO_RETURN:
/* Peer has closed the connection for writing by sending the close_notify alert. No more data can be read. */
dprintf(" closed");
/* Peer has closed the connection by sending the close_notify alert. Can't read, but can write. */
dprintf("Got SSL_ERROR_ZERO_RETURN, this means an EOF has been reached");
written = 0;
*errorCodePtr = 0;
Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
break;
case SSL_ERROR_WANT_ASYNC:
/* Used with flag SSL_MODE_ASYNC, op didn't complete because an async engine is still processing data */
|
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}
dprintf("Output(%d) -> %d", toWrite, written);
return written;
}
/*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*
* Tls_GetParent --
*
* Get parent channel for a stacked channel.
*
* Results:
* Tcl_Channel or NULL if none.
*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
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);
}
/*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*
* TlsSetOptionProc --
*
* Sets an option value for a SSL socket based channel.
* Sets an option to value for a SSL socket based channel. Called by the
* generic I/O layer whenever the Tcl_SetChannelOption() function is used.
*
* 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_Channel parent = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
Tcl_DriverSetOptionProc *setOptionProc;
dprintf("Called");
setOptionProc = Tcl_ChannelSetOptionProc(Tcl_GetChannelType(downChan));
setOptionProc = Tcl_ChannelSetOptionProc(Tcl_GetChannelType(parent));
if (setOptionProc != NULL) {
return (*setOptionProc)(Tcl_GetChannelInstanceData(downChan), interp, optionName, optionValue);
return (*setOptionProc)(Tcl_GetChannelInstanceData(parent), interp, optionName, optionValue);
}
/*
* Request for a specific option has to fail, we don't have any.
*/
return Tcl_BadChannelOption(interp, optionName, "");
}
/*
*-------------------------------------------------------------------
*
* TlsGetOptionProc --
*
* Gets an option value for a SSL socket based channel, or a
* list of all options and their values.
* Get a option's value for a SSL socket based channel, or a list of all
* options and their values. Called by the generic I/O layer whenever the
* Tcl_GetChannelOption() function is used.
*
*
* Results:
* A standard Tcl result. The value of the specified option or a
* list of all options and their values is returned in the
* 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.
* supplied DString.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
static int
TlsGetOptionProc(ClientData instanceData, /* Socket state. */
Tcl_Interp *interp, /* For errors - can be NULL. */
const char *optionName, /* Name of the option to retrieve the value for, or
* NULL to get all options and their values. */
Tcl_DString *optionValue) /* Where to store the computed value initialized by caller. */
{
State *statePtr = (State *) instanceData;
Tcl_Channel downChan = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
Tcl_Channel parent = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
Tcl_DriverGetOptionProc *getOptionProc;
dprintf("Called");
getOptionProc = Tcl_ChannelGetOptionProc(Tcl_GetChannelType(downChan));
getOptionProc = Tcl_ChannelGetOptionProc(Tcl_GetChannelType(parent));
if (getOptionProc != NULL) {
return (*getOptionProc)(Tcl_GetChannelInstanceData(downChan), interp, optionName, optionValue);
return (*getOptionProc)(Tcl_GetChannelInstanceData(parent), 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, "");
}
/*
*------------------------------------------------------*
*-----------------------------------------------------------------------------
*
* TlsChannelHandlerTimer --
*
* ------------------------------------------------*
* Called by the notifier (-> timer) to flush out
* information waiting in channel buffers.
* Called by the notifier via a timer, to flush out data waiting in
* channel buffers. called by the generic I/O layer whenever the
* ------------------------------------------------*
*
* Side effects:
* As of 'TlsChannelHandler'.
* Tcl_GetChannelHandle() function is used.
*
* Result:
* Results:
* None.
*
* Side effects:
* Creates notification event.
*
*------------------------------------------------------*
*-----------------------------------------------------------------------------
*/
static void TlsChannelHandlerTimer(ClientData clientData) {
State *statePtr = (State *) clientData;
int mask = statePtr->want; /* Init to SSL_ERROR_WANT_READ and SSL_ERROR_WANT_WRITE */
dprintf("Called");
statePtr->timer = (Tcl_TimerToken) NULL;
/* Check for amount of data pending in BIO write buffer */
if (BIO_wpending(statePtr->bio)) {
dprintf("[chan=%p] BIO writable", statePtr->self);
mask |= TCL_WRITABLE;
}
/* Check for amount of data pending in BIO read buffer */
if (BIO_pending(statePtr->bio)) {
dprintf("[chan=%p] BIO readable", statePtr->self);
mask |= TCL_READABLE;
}
/* Notify event subsystem that the channel is readable or writeable */
dprintf("Notifying ourselves");
Tcl_NotifyChannel(statePtr->self, mask);
statePtr->want = 0;
dprintf("Returning");
return;
}
/*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*
* TlsWatchProc --
*
* Initialize the event notifier to watch for events of interest
* from this channel.
* Set up the event notifier to watch for events of interest from this
* channel. Called by the generic I/O layer whenever the user (or the
* system) announces its (dis)interest in events on the channel. This is
* called repeatedly.
*
* Results:
* None.
*
* Side effects:
* Sets up the notifier so that a future event on the channel
* will be seen by Tcl.
* Sets up the time-based notifier so that future events on the channel
* will be seen by TCL.
*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
static void
TlsWatchProc(ClientData instanceData, /* The socket state. */
int mask) /* Events of interest; an OR-ed combination of
* TCL_READABLE, TCL_WRITABLE and TCL_EXCEPTION. */
{
Tcl_Channel downChan;
Tcl_Channel parent;
State *statePtr = (State *) instanceData;
Tcl_DriverWatchProc *watchProc;
dprintf("TlsWatchProc(0x%x)", mask);
dprintFlags(statePtr);
/* 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;
}
downChan = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
parent = 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");
watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(downChan));
watchProc(Tcl_GetChannelInstanceData(downChan), 0);
watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(parent));
watchProc(Tcl_GetChannelInstanceData(parent), 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);
watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(downChan));
watchProc(Tcl_GetChannelInstanceData(downChan), mask);
dprintf("Registering our interest in the lower channel (chan=%p)", (void *) parent);
watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(parent));
watchProc(Tcl_GetChannelInstanceData(parent), mask);
/*
* Management of the internal timer.
*/
if (statePtr->timer != (Tcl_TimerToken) NULL) {
dprintf("A timer was found, deleting it");
|
︙ | | |
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|
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1030
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1033
1034
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|
-
+
-
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+
+
-
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-
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+
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+
+
+
+
+
+
+
|
*/
dprintf("Creating a new timer since data appears to be waiting");
statePtr->timer = Tcl_CreateTimerHandler(TLS_TCL_DELAY, TlsChannelHandlerTimer, (ClientData) statePtr);
}
}
/*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*
* TlsGetHandleProc --
*
* This procedure is invoked by the generic IO level to retrieve a
* device-specific handle from the SSL socket based channel.
* This procedure is invoked by the generic IO level to retrieve an OS
* specific handle associated with the channel. Not used for transforms.
*
* Results:
* The appropriate Tcl_File handle or NULL if none.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
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 --
*
* This procedure is invoked by the generic IO level to notify the
* channel that an event occurred. It is used by stacked channel
* drivers that wish to be notified of events that occur on the
* underlying (stacked) channel.
* This procedure is invoked by the generic IO level to notify the channel
* that an event has occurred on the underlying channel. It is used by stacked channel drivers that
* wish to be notified of events that occur on the underlying (stacked)
* channel.
*
* Results:
* 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 */
{
State *statePtr = (State *) instanceData;
int errorCode = 0;
dprintf("Called");
/*
* 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
* don't have to. The renewal of the interest after the
* execution of channel handlers will eventually cause us to
* recreate the timer (in WatchProc).
*/
* Delete an existing timer. It was not fired, yet we are
* here, so the channel below generated such an event and we
* don't have to. The renewal of the interest after the
* execution of channel handlers will eventually cause us to
* recreate the timer (in WatchProc).
*/
if (statePtr->timer != (Tcl_TimerToken) NULL) {
Tcl_DeleteTimerHandler(statePtr->timer);
statePtr->timer = (Tcl_TimerToken) NULL;
}
/* Skip if user verify callback is still running */
if (statePtr->flags & TLS_TCL_CALLBACK) {
dprintf("Callback is on-going, returning failed");
|
︙ | | |
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|
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|
+
+
+
+
+
-
+
-
+
-
+
-
+
|
dprintf("Tls_WaitForConnect returned an error");
}
}
dprintf("Returning %i", mask);
/*
* An event occurred in the underlying channel. This
* transformation doesn't process such events thus returns the
* incoming mask unchanged.
*/
return mask;
}
/*
*-------------------------------------------------------------------
*-----------------------------------------------------------------------------
*
* Tls_ChannelType --
*
* Return the correct TLS channel driver info
* Defines the correct TLS channel driver handlers for this channel type.
*
* Results:
* The correct channel driver for the current version of Tcl.
* Tcl_ChannelType structure.
*
* 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 */
|
︙ | | |
︙ | | |
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|
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101
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103
104
|
+
+
+
+
+
+
+
+
+
+
+
+
|
#include "tlsInt.h"
/* Define maximum certificate size. Max PEM size 100kB and DER size is 24kB. */
#define CERT_STR_SIZE 24576
/*
*-----------------------------------------------------------------------------
*
* String_to_Hex --
*
* Format contents of a binary string as a hex string
*
* Results:
* TCL byte array object with x509 identifier as a hex string
*
* Side Effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *String_to_Hex(unsigned char* input, int ilen) {
unsigned char *iptr = input;
Tcl_Obj *resultObj = Tcl_NewByteArrayObj(NULL, 0);
unsigned char *data = Tcl_SetByteArrayLength(resultObj, ilen*2);
unsigned char *dptr = &data[0];
const char *hex = "0123456789abcdef";
if (resultObj == NULL) {
return NULL;
}
for (int i = 0; i < ilen; i++) {
*dptr++ = hex[(*iptr>>4)&0xF];
*dptr++ = hex[(*iptr++)&0xF];
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* BIO_to_Buffer --
*
* Output contents of a BIO to a buffer
*
* Results:
* Returns length of string in buffer
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Size BIO_to_Buffer(int result, BIO *bio, void *output, int olen) {
Tcl_Size len = 0;
int pending = BIO_pending(bio);
if (result) {
len = (Tcl_Size) BIO_read(bio, output, (pending < olen) ? pending : olen);
(void)BIO_flush(bio);
if (len < 0) {
len = 0;
}
}
return len;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509Extensions --
*
* Get list of X.509 Certificate Extensions
*
* Results:
* TCL list of extensions and boolean critical status
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509Extensions(Tcl_Interp *interp, X509 *cert) {
const STACK_OF(X509_EXTENSION) *exts;
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
if (resultObj == NULL) {
return NULL;
|
︙ | | |
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105
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|
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|
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+
+
+
+
+
+
|
LAPPEND_BOOL(interp, resultObj, OBJ_nid2ln(OBJ_obj2nid(obj)), critical);
}
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509Identifier --
*
* Get X.509 certificate Authority or Subject Key Identifiers
*
* Results:
* TCL byte array object with x509 identifier as a hex string
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509Identifier(const ASN1_OCTET_STRING *astring) {
Tcl_Obj *resultObj = NULL;
if (astring != NULL) {
resultObj = String_to_Hex((unsigned char *)ASN1_STRING_get0_data(astring),
ASN1_STRING_length(astring));
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509KeyUsage --
*
* Get X.509 certificate key usage types
*
* Results:
* Tcl list of types
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509KeyUsage(Tcl_Interp *interp, X509 *cert, uint32_t xflags) {
uint32_t usage = X509_get_key_usage(cert);
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
if (resultObj == NULL) {
return NULL;
|
︙ | | |
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|
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214
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216
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|
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+
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|
} else {
Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("unrestricted", -1));
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509Purpose --
*
* Get X.509 certificate purpose
*
* Results:
* Purpose string
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
char *Tls_x509Purpose(X509 *cert) {
char *purpose = NULL;
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) {
|
︙ | | |
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216
217
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223
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|
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|
+
+
+
+
|
} else {
purpose = "";
}
return purpose;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509Purposes --
*
* Get X.509 certificate purpose types
*
* Results:
* Tcl list of each purpose and whether it is CA or non-CA
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509Purposes(Tcl_Interp *interp, X509 *cert) {
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
X509_PURPOSE *ptmp;
if (resultObj == NULL) {
return NULL;
|
︙ | | |
246
247
248
249
250
251
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253
254
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|
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290
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293
294
295
296
297
298
299
300
|
+
+
+
+
|
}
LAPPEND_OBJ(interp, resultObj, X509_PURPOSE_get0_name(ptmp), tmpPtr);
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509Names --
*
* Get a list of Subject Alternate Names (SAN) or Issuer Alternate Names
*
* Results:
* Tcl list of alternate names
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509Names(Tcl_Interp *interp, X509 *cert, int nid, BIO *bio) {
STACK_OF(GENERAL_NAME) *names;
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
Tcl_Size len;
char buffer[1024];
|
︙ | | |
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
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298
299
300
301
|
311
312
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314
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316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
|
+
+
+
+
|
}
sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free);
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509ExtKeyUsage --
*
* Get a list of Extended Key Usages
*
* Returns:
* Tcl list of usages
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509ExtKeyUsage(Tcl_Interp *interp, X509 *cert, uint32_t xflags) {
uint32_t usage = X509_get_key_usage(cert);
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
if (resultObj == NULL) {
return NULL;
|
︙ | | |
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
|
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
|
+
+
+
+
|
} else {
Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("unrestricted", -1));
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509CrlDp --
*
* Get list of CRL Distribution Points
*
* Returns:
* Tcl list of URIs and relative-names
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509CrlDp(Tcl_Interp *interp, X509 *cert) {
STACK_OF(DIST_POINT) *crl;
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
if (resultObj == NULL) {
return NULL;
|
︙ | | |
383
384
385
386
387
388
389
390
391
392
393
394
395
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401
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413
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419
420
421
422
423
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425
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427
428
429
430
431
432
433
|
423
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425
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427
428
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432
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434
435
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440
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443
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472
473
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475
476
477
478
479
480
481
|
+
+
+
+
+
+
+
+
|
}
CRL_DIST_POINTS_free(crl);
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509Oscp
*
* Get list of On-line Certificate Status Protocol (OSCP) URIs
*
* Results:
* Tcl list of URIs
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509Oscp(Tcl_Interp *interp, X509 *cert) {
STACK_OF(OPENSSL_STRING) *ocsp;
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
if (resultObj == NULL) {
return NULL;
}
if ((ocsp = X509_get1_ocsp(cert)) != NULL) {
for (int i = 0; i < sk_OPENSSL_STRING_num(ocsp); i++) {
LAPPEND_STR(interp, resultObj, NULL, sk_OPENSSL_STRING_value(ocsp, i), -1);
}
X509_email_free(ocsp);
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_x509CaIssuers --
*
* Get list of Certificate Authority (CA) Issuer URIs
*
* Results:
* Tcl list of CA issuer URIs
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_x509CaIssuers(Tcl_Interp *interp, X509 *cert) {
STACK_OF(ACCESS_DESCRIPTION) *ads;
ACCESS_DESCRIPTION *ad;
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
unsigned char *buf;
|
︙ | | |
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
|
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
|
+
+
+
+
|
/* sk_ACCESS_DESCRIPTION_pop_free(ads, ACCESS_DESCRIPTION_free); */
AUTHORITY_INFO_ACCESS_free(ads);
}
return resultObj;
}
/*
*-----------------------------------------------------------------------------
*
* Tls_NewX509Obj --
*
* Parses a X509 certificate and returns contents as a key-value Tcl list.
*
* Result:
* A Tcl List with the X509 certificate info as a key-value list
*
* Side effects:
* None
*
*-----------------------------------------------------------------------------
*/
Tcl_Obj *Tls_NewX509Obj(Tcl_Interp *interp, X509 *cert, int all) {
Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
BIO *bio = BIO_new(BIO_s_mem());
int mdnid, pknid, bits;
Tcl_Size len;
unsigned int ulen;
|
︙ | | |