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ck_ssl.c
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char *cksslv = "SSL/TLS support, 10.0.236, 24 Sep 2022";
/*
C K _ S S L . C -- OpenSSL Interface for C-Kermit
Copyright (C) 1985, 2022,
Trustees of Columbia University in the City of New York.
All rights reserved. See the C-Kermit COPYING.TXT file or the
copyright text in the ckcmai.c module for disclaimer and permissions.
Authors: Jeffrey E Altman ([email protected])
Secure Endpoints Inc., New York City
David Goodwin, New Zealand
Provides:
. Telnet Auth SSL option compatible with Tim Hudson's hack.
. Telnet START_TLS option
. Configuration of certificate and key files
. Certificate verification and revocation list checks
. Client certificate to user id routine
Note: This code is written to be compatible with OpenSSL 0.9.6[abcdefgh]
and 0.9.7 beta 5 and later, and (since July 2012) 1.0.x.
It will also compile with version 0.9.5 although that is discouraged
due to security weaknesses in that release.
$NetBSD: patch-ab,v 1.8 2020/04/08 15:22:07 rhialto Exp $
- Update for openssl 1.1.1e.
- Kermit tries to keep SSL and TLS contexts (since in old openssl, the
*v23* methods were not version-flexible enough). Now after simplification
there is lots of duplicate code left over that could be simplified more.
Adapted for LibreSSL by Bernard Spil, December 2015 (search "Spil")
*/
#ifndef NOSSL
#include "ckcsym.h"
#include "ckcdeb.h"
#ifdef CK_SSL
#include "ckcnet.h"
#include "ckuath.h"
#include <stdlib.h>
#include <string.h>
#ifdef UNIX
#include <netinet/in.h>
#ifndef FREEBSD4
#include <arpa/inet.h>
#endif /* FREEBSD4 */
#endif /* UNIX */
#ifdef DEC_TCPIP
#include <time.h>
#include <inet.h>
#endif /* DEC_TCPIP */
#ifdef OS2
extern char exedir[];
#ifdef NT
char * GetAppData(int);
#endif
#endif /* OS2 */
extern int quiet; /* fdc - Mon Nov 28 11:44:15 2005 */
static int ssl_installed = 1;
#endif /* CK_SSL */
int
ck_ssh_is_installed()
{
#ifdef CK_SSL
#ifdef SSHBUILTIN
#ifdef SSLDLL
#ifdef NT
extern HINSTANCE hCRYPTO;
#else /* NT */
extern HMODULE hCRYPTO;
#endif /* NT */
debug(F111,"ck_ssh_is_installed","hCRYPTO",hCRYPTO);
return(ssl_installed && (hCRYPTO != NULL));
#else /* SSLDLL */
return(ssl_installed);
#endif /* SSLDLL */
#else /* SSHBUILTIN */
return(0);
#endif /* SSHBUILTIN */
#endif /* CK_SSL */
return(0);
}
int
#ifdef CK_ANSIC
ck_ssleay_is_installed(void)
#else
ck_ssleay_is_installed()
#endif
{
#ifdef CK_SSL
#ifdef SSLDLL
#ifdef NT
extern HINSTANCE hSSL, hCRYPTO;
#else /* NT */
extern HMODULE hSSL, hCRYPTO;
#endif /* NT */
debug(F111,"ck_ssleay_is_installed","hSSL",hSSL);
debug(F111,"ck_ssleay_is_installed","hCRYPTO",hCRYPTO);
return(ssl_installed && (hSSL != NULL) && (hCRYPTO != NULL));
#else /* SSLDLL */
return(ssl_installed);
#endif /* SSLDLL */
#else /* CK_SSL */
return(0);
#endif /* CK_SSL */
}
#ifdef CK_SSL
#include "ckcker.h"
#include "ckucmd.h" /* For struct keytab */
#include "ckctel.h"
#include "ck_ssl.h"
#ifdef UNIX
#include <pwd.h> /* Password file for home directory */
#endif /* UNIX */
#ifdef OS2
#include <process.h>
#endif /* OS2 */
#ifdef OS2ONLY
#include "ckotcp.h"
#endif /* OS2ONLY */
#ifdef SSLDLL
int ssl_finished_messages = 0;
#else /* SSLDLL */
#ifdef OPENSSL_VERSION_NUMBER
int ssl_finished_messages = (OPENSSL_VERSION_NUMBER >= 0x0090581fL);
#else
!ERROR This module requires OpenSSL 0.9.5a or higher
#endif /* OPENSSL_VERSION_NUMBER */
#endif /* SSLDLL */
static int auth_ssl_valid = 0;
static char *auth_ssl_name = 0; /* this holds the oneline name */
char ssl_err[SSL_ERR_BFSZ]="";
BIO *bio_err=NULL;
X509_STORE *crl_store = NULL;
#ifndef NOFTP
#ifndef SYSFTP
SSL *ssl_ftp_con = NULL;
SSL_CTX *ssl_ftp_ctx = NULL;
SSL *ssl_ftp_data_con = NULL;
int ssl_ftp_active_flag = 0;
int ssl_ftp_data_active_flag = 0;
#endif /* SYSFTP */
#endif /* NOFTP */
#ifndef NOHTTP
SSL *tls_http_con = NULL;
SSL_CTX *tls_http_ctx = NULL;
int tls_http_active_flag = 0;
int ssl_http_initialized = 0;
#endif /* NOHTTP */
SSL_CTX *ssl_ctx = NULL;
SSL *ssl_con = NULL;
int ssl_debug_flag = 0;
int ssl_verbose_flag = 0;
int ssl_only_flag = 0;
int ssl_raw_flag = 0;
int ssl_active_flag = 0;
int ssl_verify_flag = SSL_VERIFY_PEER;
int ssl_certsok_flag = 0;
char *ssl_rsa_cert_file = NULL;
char *ssl_rsa_cert_chain_file = NULL;
char *ssl_rsa_key_file = NULL;
char *ssl_dsa_cert_file = NULL;
char *ssl_dsa_cert_chain_file = NULL;
char *ssl_dh_key_file = NULL;
char *ssl_crl_file = NULL;
char *ssl_crl_dir = NULL;
char *ssl_verify_file = NULL;
char *ssl_verify_dir = NULL;
char *ssl_dh_param_file = NULL;
char *ssl_cipher_list = NULL;
char *ssl_rnd_file = NULL;
SSL_CTX *tls_ctx = NULL;
SSL *tls_con = NULL;
int tls_only_flag = 0;
int tls_raw_flag = 0;
int tls_active_flag = 0;
int ssl_initialized = 0;
int ssl_verify_depth = -1; /* used to track depth in verify routines */
/* compile this set to 1 to negotiate SSL/TLS but not actually start it */
int ssl_dummy_flag=0;
extern int inserver;
extern int debses;
extern int accept_complete;
extern char szHostName[], szUserNameRequested[], szUserNameAuthenticated[];
_PROTOTYP(int X509_to_user,(X509 *, char *, int));
static int verbosity = 0; /* Message control */
static VOID
setverbosity() {
verbosity = ssl_verbose_flag;
if (quiet) verbosity = 0;
}
int
#ifdef CK_ANSIC
ssl_server_verify_callback(int ok, X509_STORE_CTX * ctx)
#else /* CK_ANSIC */
ssl_server_verify_callback(ok, ctx)
int ok;
X509_STORE_CTX *ctx;
#endif /* CK_ANSIC */
{
static char *saved_subject=NULL;
char *subject=NULL, *issuer=NULL;
int depth,error;
X509 *xs = NULL;
if ( ssl_certsok_flag )
return(1);
setverbosity();
error=X509_STORE_CTX_get_error(ctx);
depth=X509_STORE_CTX_get_error_depth(ctx);
xs=X509_STORE_CTX_get_current_cert(ctx);
if (depth==0) {
/* clear things */
if (saved_subject!=NULL) {
free(saved_subject);
saved_subject=NULL;
}
if (auth_ssl_name!=NULL) {
free(auth_ssl_name);
auth_ssl_name=NULL;
}
}
if (ssl_debug_flag && !inserver) {
printf("ssl:server_verify_callback:depth=%d ok=%d err=%d-%s\r\n",
depth,ok,error,X509_verify_cert_error_string(error));
}
/* first thing is to have a meaningful name for the current
* certificate that is being verified ... and if we cannot
* determine that then something is seriously wrong!
*/
makestr(&subject,
(char *)X509_NAME_oneline(X509_get_subject_name(xs),NULL,0));
makestr(&issuer,
(char *)X509_NAME_oneline(X509_get_issuer_name(xs),NULL,0));
if (!subject || !subject[0] || !issuer || !issuer[0]) {
ok = 0;
goto return_time;
}
if (verbosity && !inserver && depth != ssl_verify_depth) {
printf("[%d] Certificate Subject:\r\n%s\r\n",depth,subject);
printf("[%d] Certificate Issuer:\r\n%s\r\n",depth,issuer);
ssl_verify_depth = depth;
}
/* make sure that the certificate that has been presented */
/* has not been revoked (if we have been given a CRL. */
ok = ssl_verify_crl(ok, ctx);
/* if we have any form of error in secure mode we reject the connection */
if (error!=X509_V_OK) {
if (inserver) {
#ifdef CKSYSLOG
if (ckxsyslog >= SYSLG_LI && ckxlogging) {
cksyslog(SYSLG_LI, 0,
"X.509 Certificate verify failure",
(char *) subject,
(char *)X509_verify_cert_error_string(error)
);
}
#endif /* CKSYSLOG */
} else {
if ( ssl_verify_flag &
(SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT))
printf("Error: ");
else
printf("Warning: ");
switch (error) {
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
printf("Certificate is self signed.\r\n");
break;
case X509_V_ERR_CERT_HAS_EXPIRED:
printf("Certificate has expired.\r\n");
break;
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
printf(
"Certificate issuer's certificate isn't available locally.\r\n");
break;
case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
printf("Unable to verify leaf signature.\r\n");
break;
case X509_V_ERR_CERT_REVOKED:
printf("Certificate revoked.\r\n");
break;
default:
printf("Error %d while verifying certificate.\r\n",
error);
break;
}
}
ok = !(ssl_verify_flag & SSL_VERIFY_FAIL_IF_NO_PEER_CERT);
} else {
/* if we got all the way to the top of the tree then
* we *can* use this certificate for a username to
* match ... in all other cases we must not!
*/
auth_ssl_name = saved_subject;
saved_subject = NULL;
}
return_time:
/* save the name if at least the first level is okay */
if (depth == 0 && ok)
makestr(&saved_subject,subject);
/* clean up things */
if (subject!=NULL)
free(subject);
if (issuer!=NULL)
free(issuer);
return ok;
}
int
#ifdef CK_ANSIC
ssl_client_verify_callback(int ok, X509_STORE_CTX * ctx)
#else
ssl_client_verify_callback(ok, ctx)
int ok;
X509_STORE_CTX *ctx;
#endif
{
char subject[256]="", issuer[256]="";
int depth, error, len;
X509 *xs;
setverbosity();
xs=X509_STORE_CTX_get_current_cert(ctx);
error=X509_STORE_CTX_get_error(ctx);
depth=X509_STORE_CTX_get_error_depth(ctx);
if ( ssl_debug_flag )
printf("ssl:client_verify_callback:depth=%d ok=%d err=%d-%s\r\n",
depth,ok,error,X509_verify_cert_error_string(error));
if ( ssl_certsok_flag ) {
ok = 1;
}
/* first thing is to have a meaningful name for the current
* certificate that is being verified ... and if we cannot
* determine that then something is seriously wrong!
*/
#ifdef XN_FLAG_SEP_MULTILINE
X509_NAME_print_ex(bio_err,X509_get_subject_name(xs),4,
XN_FLAG_SEP_MULTILINE);
len = BIO_read(bio_err,subject,256);
subject[len < 256 ? len : 255] = '\0';
if (!subject[0]) {
ERR_print_errors(bio_err);
len = BIO_read(bio_err,ssl_err,SSL_ERR_BFSZ);
ssl_err[len < SSL_ERR_BFSZ ? len : SSL_ERR_BFSZ] = '\0';
uq_ok("X.509 Subject Name unavailable", ssl_err, 1, NULL, 0);
ok=0;
goto return_time;
}
X509_NAME_print_ex(bio_err,X509_get_issuer_name(xs),4,
XN_FLAG_SEP_MULTILINE);
len = BIO_read(bio_err,issuer,256);
issuer[len < 256 ? len : 255] = '\0';
if (!issuer[0]) {
ERR_print_errors(bio_err);
len = BIO_read(bio_err,ssl_err,SSL_ERR_BFSZ);
ssl_err[len < SSL_ERR_BFSZ ? len : SSL_ERR_BFSZ] = '\0';
uq_ok("X.509 Issuer Name unavailable", ssl_err, 1, NULL, 0);
ok=0;
goto return_time;
}
#else /* XN_FLAG_SEP_MULTILINE */
X509_NAME_oneline(X509_get_subject_name(xs),subject,256);
if (!subject[0]) {
int len;
ERR_print_errors(bio_err);
len = BIO_read(bio_err,ssl_err,SSL_ERR_BFSZ);
ssl_err[len < SSL_ERR_BFSZ ? len : SSL_ERR_BFSZ] = '\0';
uq_ok("X.509 Subject Name unavailable", ssl_err, 1, NULL, 0);
ok=0;
goto return_time;
}
X509_NAME_oneline(X509_get_issuer_name(xs),issuer,256);
if (!issuer[0]) {
int len;
ERR_print_errors(bio_err);
len = BIO_read(bio_err,ssl_err,SSL_ERR_BFSZ);
ssl_err[len < SSL_ERR_BFSZ ? len : SSL_ERR_BFSZ] = '\0';
uq_ok("X.509 Issuer Name unavailable", ssl_err, 1, NULL, 0);
ok=0;
goto return_time;
}
#endif /* XN_FLAG_SEP_MULTILINE */
if (verbosity && depth != ssl_verify_depth) {
printf("[%d] Certificate Subject:\r\n%s\r\n",depth,subject);
printf("[%d] Certificate Issuer:\r\n%s\r\n",depth,issuer);
ssl_verify_depth = depth;
}
ok = ssl_verify_crl(ok, ctx);
if ( !ok ) {
char prefix[1024];
/* if the server is using a self signed certificate then
* we need to decide if that is good enough for us to
* accept ...
*/
switch ( error ) {
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: {
if (ssl_verify_flag & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
/* make 100% sure that in secure more we drop the
* connection if the server does not have a
* real certificate!
*/
ckmakxmsg(prefix,1024,
"Error: Server has a self-signed certificate\n",
"[",ckitoa(depth),"] Certificate Subject=\n",subject,
"\n[",ckitoa(depth),"] Certificate Issuer=\n",issuer,
NULL,NULL,NULL);
uq_ok(prefix, "Rejecting Connection", 1, NULL, 0);
/* sometimes it is really handy to be able to debug things
* and still get a connection!
*/
if (ssl_debug_flag) {
printf("SSL: debug -> ignoring cert required!\r\n");
ok=1;
} else {
ok=0;
}
goto return_time;
} else if (ssl_verify_flag != SSL_VERIFY_NONE) {
ckmakxmsg(prefix,1024,
"Warning: Server has a self-signed certificate\n",
"[",ckitoa(depth),"] Certificate Subject=\n",subject,
"\n[",ckitoa(depth),"] Certificate Issuer=\n",issuer,
NULL,NULL,NULL);
ok = uq_ok(prefix,
"Continue? (Y/N) ",
3, NULL, 0);
if ( ok < 0 )
ok = 0;
goto return_time;
}
}
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
if (ssl_verify_flag & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
/* make 100% sure that in secure more we drop the
* connection if the server does not have a
* real certificate!
*/
ckmakxmsg(prefix,1024,
"Error: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Issuer=\n",issuer,
NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
uq_ok(prefix, "Rejecting Connection", 1, NULL, 0);
/* sometimes it is really handy to be able to debug things
* and still get a connection!
*/
if (ssl_debug_flag) {
printf("SSL: debug -> ignoring cert required!\r\n");
ok=1;
} else {
ok=0;
}
goto return_time;
} else if (ssl_verify_flag != SSL_VERIFY_NONE) {
ckmakxmsg(prefix,1024,
"Warning: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Issuer=\n",issuer,
NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
ok = uq_ok(prefix, "Continue (Y/N)", 3, NULL, 0);
goto return_time;
}
break;
case X509_V_ERR_CERT_NOT_YET_VALID:
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
if (ssl_verify_flag & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
int len;
/* make 100% sure that in secure more we drop the
* connection if the server does not have a
* real certificate!
*/
ASN1_TIME_print(bio_err,X509_get_notBefore(xs));
len = BIO_read(bio_err,ssl_err,SSL_ERR_BFSZ);
ssl_err[len < SSL_ERR_BFSZ ? len : SSL_ERR_BFSZ] = '\0';
ckmakxmsg(prefix,1024,
"Error: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Subject=\n",subject,
"\nnotBefore=",ssl_err,
NULL,NULL,NULL,NULL,NULL,NULL);
uq_ok(prefix, "Rejecting Connection", 1, NULL, 0);
/* sometimes it is really handy to be able to debug things
* and still get a connection!
*/
if (ssl_debug_flag) {
printf("SSL: debug -> ignoring cert required!\r\n");
ok=1;
} else {
ok=0;
}
goto return_time;
} else if (ssl_verify_flag != SSL_VERIFY_NONE) {
int len;
ASN1_TIME_print(bio_err,X509_get_notBefore(xs));
len = BIO_read(bio_err,ssl_err,SSL_ERR_BFSZ);
ssl_err[len < SSL_ERR_BFSZ ? len : SSL_ERR_BFSZ] = '\0';
ckmakxmsg(prefix,1024,
"Warning: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Subject=\n",subject,
"\n notBefore=",ssl_err,
NULL,NULL,NULL,NULL,NULL,NULL);
ok = uq_ok(prefix, "Continue (Y/N)", 3, NULL, 0);
}
break;
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
if (ssl_verify_flag & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
int len;
/* make 100% sure that in secure more we drop the
* connection if the server does not have a
* real certificate!
*/
ASN1_TIME_print(bio_err,X509_get_notAfter(xs));
len = BIO_read(bio_err,ssl_err,SSL_ERR_BFSZ);
ssl_err[len < SSL_ERR_BFSZ ? len : SSL_ERR_BFSZ] = '\0';
ckmakxmsg(prefix,1024,
"Error: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Subject=\n",subject,
"\n notAfter=",ssl_err,
NULL,NULL,NULL,NULL,NULL,NULL);
uq_ok(prefix, "Rejecting Connection", 1, NULL, 0);
/* sometimes it is really handy to be able to debug things
* and still get a connection!
*/
if (ssl_debug_flag) {
printf("SSL: debug -> ignoring cert required!\r\n");
ok=1;
} else {
ok=0;
}
goto return_time;
} else if (ssl_verify_flag != SSL_VERIFY_NONE) {
int len;
ASN1_TIME_print(bio_err,X509_get_notAfter(xs));
len = BIO_read(bio_err,ssl_err,SSL_ERR_BFSZ);
ssl_err[len < SSL_ERR_BFSZ ? len : SSL_ERR_BFSZ] = '\0';
ckmakxmsg(prefix,1024,
"Warning: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Subject=\n",subject,
"\n notAfter=",ssl_err,
NULL,NULL,NULL,NULL,NULL,NULL);
ok = uq_ok(prefix, "Continue (Y/N)", 3, NULL, 0);
}
break;
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
/*
* When an SSL server sends its certificates to the client there
* are two" conventions": one is to send the complete certificate
* chain and the other is to send the whole chain apart from the
* root.
*
* You don't usually need the root because the root is normally
* stored and trusted locally.
*
* So if you get the whole chain it will complain about the self
* signed certificate whereas if the root is missing it says it
* can't find the issuer certificate.
*/
if (ssl_verify_flag & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
/* make 100% sure that in secure more we drop the
* connection if the server does not have a
* real certificate!
*/
ckmakxmsg(prefix,1024,
"Error: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Issuer=\n",issuer,
NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
uq_ok(prefix, "Rejecting Connection", 1, NULL, 0);
/* sometimes it is really handy to be able to debug things
* and still get a connection!
*/
if (ssl_debug_flag) {
printf("SSL: debug -> ignoring cert required!\r\n");
ok=1;
} else {
ok=0;
}
goto return_time;
} else if (ssl_verify_flag != SSL_VERIFY_NONE) {
ckmakxmsg(prefix,1024,
"Warning: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Issuer=\n",issuer,
NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
ok = uq_ok(prefix, "Continue (Y/N)", 3, NULL, 0);
#ifdef NT
if (ok) {
/* if the user decides to accept the certificate
* offer to store it for future connections in
* the user's private store
*/
ok = uq_ok(
"Do you wish to store the certificate to verify future connections?",
"Continue (Y/N)", 3, NULL, 0);
if (ok)
ck_X509_save_cert_to_user_store(xs);
}
#endif /* NT */
}
break;
case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
case X509_V_ERR_UNABLE_TO_GET_CRL:
case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
case X509_V_ERR_CERT_SIGNATURE_FAILURE:
case X509_V_ERR_CRL_SIGNATURE_FAILURE:
case X509_V_ERR_CRL_NOT_YET_VALID:
case X509_V_ERR_CRL_HAS_EXPIRED:
case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
case X509_V_ERR_OUT_OF_MEM:
case X509_V_ERR_CERT_CHAIN_TOO_LONG:
case X509_V_ERR_CERT_REVOKED:
case X509_V_ERR_APPLICATION_VERIFICATION:
default:
if (ssl_verify_flag & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
/* make 100% sure that in secure mode we drop the
* connection if the server does not have a
* real certificate!
*/
ckmakxmsg(prefix,1024,
"Error: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Subject=\n",subject,
NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
uq_ok(prefix, "Rejecting Connection", 1, NULL, 0);
/* sometimes it is really handy to be able to debug things
* and still get a connection!
*/
if (ssl_debug_flag) {
printf("SSL: debug -> ignoring cert required!\r\n");
ok=1;
} else {
ok=0;
}
goto return_time;
} else if (ssl_verify_flag != SSL_VERIFY_NONE) {
ckmakxmsg(prefix,1024,
"Warning: ",
(char *)X509_verify_cert_error_string(error),
"\nCertificate Subject=\n",subject,
NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
ok = uq_ok(prefix, "Continue (Y/N)", 3, NULL, 0);
}
break;
}
}
return_time:
if ( ssl_debug_flag )
printf("ssl:client_verify_callback => ok: %d\r\n",ok);
return ok;
}
VOID
#ifdef CK_ANSIC
ssl_client_info_callback(const SSL *s, int where, int ret)
#else
ssl_client_info_callback(s,where,ret)
const SSL *s;
int where;
int ret;
#endif /* CK_ANSIC */
{
if (inserver || !ssl_debug_flag)
return;
setverbosity();
switch ( where ) {
case SSL_CB_CONNECT_LOOP:
printf("SSL_connect:%s %s\r\n",
SSL_state_string((SSL *)s),SSL_state_string_long((SSL *)s));
break;
case SSL_CB_CONNECT_EXIT:
if (ret == 0) {
printf("SSL_connect:failed in %s %s\r\n",
SSL_state_string((SSL *)s),SSL_state_string_long((SSL *)s));
} else if (ret < 0) {
printf("SSL_connect:error in %s %s\r\n",
SSL_state_string((SSL *)s),SSL_state_string_long((SSL *)s));
}
break;
case SSL_CB_ACCEPT_LOOP:
printf("SSL_accept:%s %s\r\n",
SSL_state_string((SSL *)s),SSL_state_string_long((SSL *)s));
break;
case SSL_CB_ACCEPT_EXIT:
if (ret == 0) {
printf("SSL_accept:failed in %s %s\r\n",
SSL_state_string((SSL *)s),SSL_state_string_long((SSL *)s));
} else if (ret < 0) {
printf("SSL_accept:error in %s %s\r\n",
SSL_state_string((SSL *)s),SSL_state_string_long((SSL *)s));
}
break;
case SSL_CB_READ_ALERT:
printf("SSL_read_alert\r\n");
break;
case SSL_CB_WRITE_ALERT:
printf("SSL_write_alert\r\n");
break;
case SSL_CB_HANDSHAKE_START:
printf("SSL_handshake:%s %s\r\n",
SSL_state_string((SSL *)s),SSL_state_string_long((SSL *)s));
break;
case SSL_CB_HANDSHAKE_DONE:
printf("SSL_handshake:%s %s\r\n",
SSL_state_string((SSL *)s),SSL_state_string_long((SSL *)s));
break;
}
}
#ifdef USE_CERT_CB
/* Return 1, client cert is available */
/* Return 0, no client cert is available */
/* Return -1, callback must be called again. SSL_want_x509_lookup() == 1 */
int
#ifdef CK_ANSIC
ssl_client_cert_callback(SSL * s, X509 ** x509, EVP_PKEY ** pkey)
#else /* CK_ANSIC */
ssl_client_cert_callback(s, x509, pkey)
SSL * s;
X509 ** x509;
EVP_PKEY ** pkey;
#endif /* CK_ANSIC */
{
setverbosity();
if ( ssl_debug_flag ) {
const char * cipher_list=SSL_get_cipher(s);
printf("ssl_client_cert_callback called (%s)\r\n",
cipher_list?cipher_list:"UNKNOWN");
}
#ifdef COMMENT
if ( s == tls_con ) {
if (tls_load_certs(tls_cts,tls_con,0)) {
*x509 = SSL_get_certificate(s);
*pkey = SSL_get_privatekey(s);
return(1);
}
} else if ( s == ssl_con ) {
if (tls_load_certs(ssl_ctx,ssl_con,0)) {
*x509 = SSL_get_certificate(s);
*pkey = SSL_get_privatekey(s);
return(1);
}
}
return(0);
#else /* COMMENT */
return(0);
#endif /* COMMENT */
}
#endif /* USE_CERT_CB */
#ifndef MS_CALLBACK
#define MS_CALLBACK
#endif /* MS_CALLBACK */
static BIGNUM *get_RSA_F4()
{
static BIGNUM *bn;
if (!bn) {
bn = BN_new();
BN_add_word(bn, RSA_F4);
}
return bn;
}
static RSA MS_CALLBACK *
#ifdef CK_ANSIC
tmp_rsa_cb(SSL * s, int export, int keylength)
#else /* CK_ANSIC */
tmp_rsa_cb(s,export,keylength)
SSL *s;
int export;
int keylength;
#endif /* CK_ANSIC */
{
static RSA *rsa_tmp=NULL;
#ifndef NO_RSA
if (rsa_tmp == NULL)
{
if (ssl_debug_flag)
printf("Generating temporary (%d bit) RSA key...\r\n",keylength);
rsa_tmp = RSA_new();
if (rsa_tmp) {
int error = RSA_generate_key_ex(rsa_tmp, keylength, get_RSA_F4(),NULL);
if (error) {
if (ssl_debug_flag)
printf(" error %d", error);
RSA_free(rsa_tmp);
rsa_tmp = NULL;
}
}
if (ssl_debug_flag)
printf("\r\n");
}
#else /* NO_RSA */
if (ssl_debug_flag)
printf("Unable to generate temporary RSA key...\r\n");
#endif
return(rsa_tmp);
}
#ifndef NO_DH
static unsigned char dh512_p[]={
0xE9,0x4E,0x3A,0x64,0xFA,0x65,0x5F,0xA6,0x44,0xC7,0xFC,0xF1,
0x16,0x8B,0x11,0x11,0x7A,0xF0,0xB2,0x49,0x80,0x56,0xA3,0xF8,
0x0F,0x7D,0x01,0x68,0x5D,0xF6,0x8A,0xEA,0x8C,0xDD,0x01,0xDC,
0x43,0x18,0xE0,0xC4,0x89,0x80,0xE6,0x2D,0x44,0x77,0x45,0xFD,
0xBA,0xFC,0x43,0x35,0x12,0xC0,0xED,0x32,0xD3,0x16,0xEF,0x51,
0x09,0x44,0xA2,0xDB,
};
static unsigned char dh512_g[]={
0x05,
};
static unsigned char dh768_p[]={
0x8B,0x2A,0x8C,0x6C,0x0F,0x87,0xC7,0x34,0xEE,0x2E,0xFB,0x60,
0x94,0xB3,0xBF,0x95,0xBA,0x84,0x74,0x86,0xEA,0xE0,0xA4,0x33,
0xE0,0x8F,0x7C,0x79,0x5C,0x62,0xE2,0x91,0xC5,0x6D,0x68,0xB9,
0x6C,0x5E,0x4E,0x94,0x0C,0x8E,0x56,0x8E,0xEB,0x98,0x7C,0x6E,
0x0E,0xF2,0xD5,0xAA,0x22,0x27,0x3F,0x0F,0xAF,0x10,0xB5,0x0B,
0x16,0xCC,0x05,0x27,0xBB,0x58,0x6D,0x61,0x4B,0x2B,0xAB,0xDC,
0x6A,0x15,0xBC,0x36,0x75,0x4D,0xEC,0xAB,0xFA,0xB6,0xE1,0xB1,
0x13,0x70,0xD8,0x77,0xCD,0x5E,0x51,0x77,0x81,0x0D,0x77,0x43,
};
static unsigned char dh768_g[]={
0x05,
};
static unsigned char dh1024_p[]={
0xA4,0x75,0xCF,0x35,0x00,0xAF,0x3C,0x17,0xCE,0xB0,0xD0,0x52,
0x43,0xA0,0x0E,0xFA,0xA2,0xC9,0xBE,0x0B,0x76,0x7A,0xD9,0x2E,
0xF4,0x97,0xAC,0x02,0x24,0x69,0xF6,0x36,0x4F,0xAB,0xCC,0x43,
0xC1,0x74,0xFF,0xA3,0xD4,0x04,0x0F,0x11,0x2B,0x6D,0x8C,0x47,
0xC9,0xCF,0x40,0x93,0x9B,0x7D,0x1E,0x52,0x85,0xB2,0x17,0x55,
0x9C,0xF2,0x41,0x02,0x2A,0x9D,0x5F,0x24,0x22,0xC6,0x04,0xC4,
0xAB,0x92,0x6D,0xC7,0xC8,0xF3,0x41,0x58,0x6C,0x86,0xFD,0xB8,
0x0F,0x2D,0xDD,0xBF,0xA8,0x40,0x0C,0x58,0xC8,0xF2,0x3F,0x18,
0xEF,0xF1,0x93,0x3E,0xBA,0x16,0x41,0xBE,0x32,0x6C,0xC5,0x63,
0xFF,0x8A,0x02,0x3D,0xAC,0xD5,0x5A,0x49,0x64,0x34,0x14,0x2E,
0xFB,0x2E,0xE7,0x39,0x1A,0x0F,0x3C,0x33,
};
static unsigned char dh1024_g[]={
0x05,
};
static unsigned char dh1536_p[]={
0xA3,0x2B,0x75,0x0E,0x7B,0x31,0x82,0xCA,0xF2,0xFC,0xF3,0x3D,
0xCE,0x5F,0xCD,0x5B,0x95,0xF6,0x2F,0xA4,0x5D,0x08,0x26,0xD2,
0x5F,0xC0,0x3F,0xC5,0xD8,0xA2,0xFE,0x83,0x26,0xBC,0xEB,0x7D,
0xF0,0x4E,0xD2,0xA6,0xBB,0x3C,0x88,0x63,0xCE,0x98,0xDE,0x08,
0xE2,0xE1,0xAF,0xE2,0x38,0xA8,0xFA,0x68,0x76,0x8D,0xBF,0xDF,
0xBB,0x30,0x15,0xFE,0xBD,0x22,0xCC,0x03,0x4E,0x5E,0x33,0xA3,
0x6D,0xD6,0x68,0x12,0x97,0x17,0x4B,0xB5,0x84,0x5F,0x5F,0xA3,
0x5C,0x2F,0xA4,0x10,0xC1,0xAD,0xBF,0xAC,0x30,0xCA,0x47,0x64,
0x63,0xFE,0xEE,0xEE,0xA1,0x64,0x73,0x70,0xAA,0xF9,0xFE,0xC6,
0xAD,0x5E,0xF6,0xF3,0x9C,0xDF,0x34,0x53,0x34,0x72,0xA6,0xA4,
0xBB,0x81,0x5A,0x43,0x41,0xFD,0x41,0x05,0x5B,0x77,0x7B,0x84,
0x03,0xFA,0x8A,0xFA,0xF7,0x8E,0x0F,0xCB,0x51,0xA2,0xB8,0x45,
0xFF,0x59,0x42,0xEF,0xCF,0xF6,0x25,0x37,0xE2,0x6D,0xFF,0x69,
0x11,0xF5,0x77,0x59,0x79,0x1C,0x5F,0x05,0xFC,0x7A,0x65,0x81,
0x03,0x4A,0x78,0xC6,0xE9,0x48,0x73,0xF6,0x10,0xBC,0x99,0x1C,
0xEE,0x44,0x2F,0x8B,0x70,0xCA,0xA8,0xB6,0x02,0x83,0x3E,0x0B,
};
static unsigned char dh1536_g[]={
0x05,
};
static unsigned char dh2048_p[]={
0xFA,0x4E,0xE4,0x3B,0xFA,0xC1,0x87,0xDD,0xE7,0xC6,0x8B,0xE6,
0x13,0x85,0xBC,0x9B,0x2B,0x8B,0x5B,0x46,0xBB,0x8B,0x86,0x6D,
0xD7,0xB6,0xD5,0x49,0xC5,0x54,0xF2,0x3E,0xD2,0x39,0x64,0x9B,
0x0E,0x33,0x39,0x8F,0xFA,0xFA,0xD9,0x78,0xED,0x34,0x82,0x29,
0x37,0x58,0x4D,0x5D,0x40,0xCB,0x69,0xE3,0x8A,0x9F,0x17,0x0C,
0x01,0x23,0x6B,0x05,0x01,0xAF,0x33,0xDE,0xDF,0x1A,0xBB,0x7B,
0x6A,0x9F,0xD8,0xED,0x8D,0x5E,0x44,0x19,0x5B,0xE0,0xB6,0x23,
0xF9,0x7A,0x96,0x6E,0x94,0x33,0x31,0x49,0xBA,0x84,0xD5,0x12,
0xD7,0x6D,0xDC,0x35,0x54,0x64,0xA3,0xD8,0x04,0x26,0xC5,0xAF,
0x7F,0xE3,0xFE,0x6F,0xBE,0xD5,0x17,0x72,0x4B,0xA6,0xD0,0xA7,
0x5F,0x18,0xF5,0xF0,0x2D,0x11,0x9A,0xF6,0xD5,0x3B,0x6C,0x61,
0x3C,0x6F,0x8E,0x09,0x4F,0x2C,0xE1,0x26,0x06,0x51,0xB3,0x19,
0x85,0x85,0x13,0xF9,0xC2,0x6E,0x80,0x28,0x9E,0x8A,0xA0,0x01,
0x46,0xD1,0x85,0x44,0x8C,0xE6,0xEE,0x7E,0x1E,0x17,0x3D,0xBA,
0x54,0xFF,0xE8,0x0E,0xDD,0x51,0xF3,0x74,0x7F,0x0D,0x0B,0xAB,
0xCA,0x84,0x8D,0x24,0x5D,0x56,0xD4,0x47,0x02,0xFC,0x93,0x9F,
0xAE,0x9B,0x5C,0xDB,0x63,0xEB,0x65,0x01,0x38,0xC2,0x7B,0x30,
0x1E,0x17,0x1C,0x75,0xF5,0x16,0x3B,0x4F,0x5F,0x41,0x32,0xB5,
0xFF,0x9E,0x61,0xFD,0xD2,0x62,0x6E,0xFD,0x8A,0x28,0x93,0x59,
0x2D,0x70,0x14,0x4D,0xE1,0x86,0xD5,0x90,0xB4,0xDF,0x72,0x71,
0xE0,0xB4,0xD0,0xD6,0x82,0x3A,0x4A,0x04,0x58,0x32,0x0B,0xD3,
0x51,0x13,0x32,0x63,
};
static unsigned char dh2048_g[]={
0x02,
};
static DH *
get_dh512()
{
DH *dh=NULL;
if ((dh=DH_new()) == NULL)
return(NULL);
#if OPENSSL_VERSION_NUMBER >= 0x10100005L
BIGNUM *p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
BIGNUM *g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
if ((p == NULL) || (g == NULL)) {
BN_free(g);
BN_free(p);
DH_free(dh);
return(NULL);
}
DH_set0_pqg(dh, p, NULL, g);
#else
dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
if ((dh->p == NULL) || (dh->g == NULL)) {
BN_free(dh->g);
BN_free(dh->p);
DH_free(dh);
return(NULL);
}
#endif
return(dh);
}
static DH *
get_dh768()
{
DH *dh=NULL;