2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c) 2005-2008 Florian Westphal <fw@strlen.de>
10 * SSL wrapper functions
28 #include "conn-func.h"
35 extern struct SSLOptions Conf_SSLOptions;
38 #include <openssl/err.h>
39 #include <openssl/rand.h>
41 static SSL_CTX * ssl_ctx;
44 static bool ConnSSL_LoadServerKey_openssl PARAMS(( SSL_CTX *c ));
48 #include <sys/types.h>
52 #include <gnutls/x509.h>
55 #define DH_BITS_MIN 1024
57 #define MAX_HASH_SIZE 64 /* from gnutls-int.h */
59 static gnutls_certificate_credentials_t x509_cred;
60 static gnutls_dh_params_t dh_params;
61 static gnutls_priority_t priorities_cache;
62 static bool ConnSSL_LoadServerKey_gnutls PARAMS(( void ));
65 #define SHA1_STRING_LEN (20 * 2 + 1)
67 static bool ConnSSL_Init_SSL PARAMS(( CONNECTION *c ));
68 static int ConnectAccept PARAMS(( CONNECTION *c, bool connect ));
69 static int ConnSSL_HandleError PARAMS(( CONNECTION *c, const int code, const char *fname ));
72 static char * openreadclose(const char *name, size_t *len)
77 int fd = open(name, O_RDONLY);
79 Log(LOG_ERR, "Could not open %s: %s", name, strerror(errno));
83 Log(LOG_ERR, "Could not fstat %s: %s", name, strerror(errno));
86 if (!S_ISREG(s.st_mode)) {
87 Log(LOG_ERR, "%s: Not a regular file", name);
91 Log(LOG_ERR, "%s: invalid file length (size %ld <= 0)", name, (long) s.st_size);
94 buf = malloc(s.st_size);
96 Log(LOG_ERR, "Could not malloc %lu bytes for file %s: %s", s.st_size, name, strerror(errno));
99 br = read(fd, buf, s.st_size);
100 if (br != (ssize_t)s.st_size) {
101 Log(LOG_ERR, "Could not read file %s: read returned %ld, expected %ld: %s",
102 name, (long) br, (long) s.st_size, br == -1 ? strerror(errno):"short read?!");
103 memset(buf, 0, s.st_size);
118 * Log OpenSSL error message.
120 * @param msg The error message.
121 * @param info Additional information text or NULL.
124 LogOpenSSLError(const char *error, const char *info)
126 unsigned long err = ERR_get_error();
128 ? ERR_error_string(err, NULL)
129 : "Unable to determine error";
131 assert(error != NULL);
134 Log(LOG_ERR, "%s: %s (%s)", error, info, errmsg);
136 Log(LOG_ERR, "%s: %s", error, errmsg);
141 pem_passwd_cb(char *buf, int size, int rwflag, void *password)
143 array *pass = password;
146 (void)rwflag; /* rwflag is unused if DEBUG is not set. */
147 assert(rwflag == 0); /* 0 -> callback used for decryption.
148 * See SSL_CTX_set_default_passwd_cb(3) */
150 passlen = (int) array_bytes(pass);
152 LogDebug("pem_passwd_cb buf size %d, array size %d", size, passlen);
153 assert(passlen >= 0);
155 Log(LOG_ERR, "PEM password required but not set [in pem_passwd_cb()]!");
158 size = passlen > size ? size : passlen;
159 memcpy(buf, (char *)(array_start(pass)), size);
165 Verify_openssl(UNUSED int preverify_ok, UNUSED X509_STORE_CTX *x509_ctx)
179 if (!Conf_SSLOptions.DHFile) {
180 Log(LOG_NOTICE, "Configuration option \"DHFile\" not set!");
183 fp = fopen(Conf_SSLOptions.DHFile, "r");
185 Log(LOG_ERR, "%s: %s", Conf_SSLOptions.DHFile, strerror(errno));
188 dh_params = PEM_read_DHparams(fp, NULL, NULL, NULL);
190 Log(LOG_ERR, "%s: Failed to read SSL DH parameters!",
191 Conf_SSLOptions.DHFile);
197 #ifdef HAVE_LIBGNUTLS
198 bool need_dhgenerate = true;
200 gnutls_dh_params_t tmp_dh_params;
202 err = gnutls_dh_params_init(&tmp_dh_params);
204 Log(LOG_ERR, "Failed to initialize SSL DH parameters: %s",
205 gnutls_strerror(err));
208 if (Conf_SSLOptions.DHFile) {
209 gnutls_datum_t dhparms;
211 dhparms.data = (unsigned char *) openreadclose(Conf_SSLOptions.DHFile, &size);
214 err = gnutls_dh_params_import_pkcs3(tmp_dh_params, &dhparms, GNUTLS_X509_FMT_PEM);
216 need_dhgenerate = false;
219 "Failed to initialize SSL DH parameters: %s",
220 gnutls_strerror(err));
222 memset(dhparms.data, 0, size);
226 if (need_dhgenerate) {
228 "DHFile not set, generating %u bit DH parameters. This may take a while ...",
230 err = gnutls_dh_params_generate2(tmp_dh_params, DH_BITS);
232 Log(LOG_ERR, "Failed to generate SSL DH parameters: %s",
233 gnutls_strerror(err));
237 dh_params = tmp_dh_params;
243 void ConnSSL_Free(CONNECTION *c)
246 SSL *ssl = c->ssl_state.ssl;
250 c->ssl_state.ssl = NULL;
251 if (c->ssl_state.fingerprint) {
252 free(c->ssl_state.fingerprint);
253 c->ssl_state.fingerprint = NULL;
257 #ifdef HAVE_LIBGNUTLS
258 gnutls_session_t sess = c->ssl_state.gnutls_session;
259 if (Conn_OPTION_ISSET(c, CONN_SSL)) {
260 gnutls_bye(sess, GNUTLS_SHUT_RDWR);
264 assert(Conn_OPTION_ISSET(c, CONN_SSL));
265 /* can't just set bitmask to 0 -- there are other, non-ssl related flags, e.g. CONN_ZIP. */
266 Conn_OPTION_DEL(c, CONN_SSL_FLAGS_ALL);
271 ConnSSL_InitLibrary( void )
273 if (!Conf_SSLInUse()) {
274 LogDebug("SSL not in use, skipping initialization.");
283 SSL_load_error_strings();
286 if (!RAND_status()) {
287 Log(LOG_ERR, "OpenSSL PRNG not seeded: /dev/urandom missing?");
289 * it is probably best to fail and let the user install EGD or
290 * a similar program if no kernel random device is available.
291 * According to OpenSSL RAND_egd(3): "The automatic query of
292 * /var/run/egd-pool et al was added in OpenSSL 0.9.7";
293 * so it makes little sense to deal with PRNGD seeding ourselves.
295 array_free(&Conf_SSLOptions.ListenPorts);
299 newctx = SSL_CTX_new(SSLv23_method());
301 LogOpenSSLError("Failed to create SSL context", NULL);
302 array_free(&Conf_SSLOptions.ListenPorts);
306 if (!ConnSSL_LoadServerKey_openssl(newctx))
309 if(Conf_SSLOptions.CipherList && *Conf_SSLOptions.CipherList) {
310 if(SSL_CTX_set_cipher_list(newctx, Conf_SSLOptions.CipherList) == 0 ) {
312 "Failed to apply OpenSSL cipher list \"%s\"!",
313 Conf_SSLOptions.CipherList);
317 "Successfully applied OpenSSL cipher list \"%s\".",
318 Conf_SSLOptions.CipherList);
322 SSL_CTX_set_options(newctx, SSL_OP_SINGLE_DH_USE|SSL_OP_NO_SSLv2);
323 SSL_CTX_set_mode(newctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
324 SSL_CTX_set_verify(newctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
326 SSL_CTX_free(ssl_ctx);
328 Log(LOG_INFO, "%s initialized.", SSLeay_version(SSLEAY_VERSION));
331 SSL_CTX_free(newctx);
332 array_free(&Conf_SSLOptions.ListenPorts);
335 #ifdef HAVE_LIBGNUTLS
337 static bool initialized;
340 /* TODO: cannot reload gnutls keys: can't simply free x509
341 * context -- it may still be in use */
345 err = gnutls_global_init();
347 Log(LOG_ERR, "Failed to initialize GnuTLS: %s",
348 gnutls_strerror(err));
352 if (!ConnSSL_LoadServerKey_gnutls())
355 if(Conf_SSLOptions.CipherList && *Conf_SSLOptions.CipherList) {
356 err = gnutls_priority_init(&priorities_cache,
357 Conf_SSLOptions.CipherList, NULL);
358 if (err != GNUTLS_E_SUCCESS) {
360 "Failed to apply GnuTLS cipher list \"%s\"!",
361 Conf_SSLOptions.CipherList);
365 "Successfully applied GnuTLS cipher list \"%s\".",
366 Conf_SSLOptions.CipherList);
368 err = gnutls_priority_init(&priorities_cache, "NORMAL", NULL);
369 if (err != GNUTLS_E_SUCCESS) {
371 "Failed to apply GnuTLS cipher list \"NORMAL\"!");
376 Log(LOG_INFO, "GnuTLS %s initialized.", gnutls_check_version(NULL));
380 array_free(&Conf_SSLOptions.ListenPorts);
386 #ifdef HAVE_LIBGNUTLS
388 ConnSSL_LoadServerKey_gnutls(void)
391 const char *cert_file;
393 err = gnutls_certificate_allocate_credentials(&x509_cred);
395 Log(LOG_ERR, "Failed to allocate certificate credentials: %s",
396 gnutls_strerror(err));
400 cert_file = Conf_SSLOptions.CertFile ? Conf_SSLOptions.CertFile:Conf_SSLOptions.KeyFile;
402 Log(LOG_ERR, "No SSL server key configured!");
406 if (array_bytes(&Conf_SSLOptions.KeyFilePassword))
408 "Ignoring SSL \"KeyFilePassword\": Not supported by GnuTLS.");
410 if (!Load_DH_params())
413 gnutls_certificate_set_dh_params(x509_cred, dh_params);
414 err = gnutls_certificate_set_x509_key_file(x509_cred, cert_file, Conf_SSLOptions.KeyFile, GNUTLS_X509_FMT_PEM);
417 "Failed to set certificate key file (cert %s, key %s): %s",
419 Conf_SSLOptions.KeyFile ? Conf_SSLOptions.KeyFile : "(NULL)",
420 gnutls_strerror(err));
430 ConnSSL_LoadServerKey_openssl(SSL_CTX *ctx)
435 if (!Conf_SSLOptions.KeyFile) {
436 Log(LOG_ERR, "No SSL server key configured!");
440 SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
441 SSL_CTX_set_default_passwd_cb_userdata(ctx, &Conf_SSLOptions.KeyFilePassword);
443 if (SSL_CTX_use_PrivateKey_file(ctx, Conf_SSLOptions.KeyFile, SSL_FILETYPE_PEM) != 1) {
444 array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
445 LogOpenSSLError("Failed to add private key", Conf_SSLOptions.KeyFile);
449 cert_key = Conf_SSLOptions.CertFile ? Conf_SSLOptions.CertFile:Conf_SSLOptions.KeyFile;
450 if (SSL_CTX_use_certificate_chain_file(ctx, cert_key) != 1) {
451 array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
452 LogOpenSSLError("Failed to load certificate chain", cert_key);
456 array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
458 if (!SSL_CTX_check_private_key(ctx)) {
459 LogOpenSSLError("Server private key does not match certificate", NULL);
462 if (Load_DH_params()) {
463 if (SSL_CTX_set_tmp_dh(ctx, dh_params) != 1)
464 LogOpenSSLError("Error setting DH parameters", Conf_SSLOptions.DHFile);
465 /* don't return false here: the non-DH modes will still work */
475 ConnSSL_Init_SSL(CONNECTION *c)
479 LogDebug("Initializing SSL ...");
485 "Can't initialize SSL context, OpenSSL initialization failed at startup!");
488 assert(c->ssl_state.ssl == NULL);
489 assert(c->ssl_state.fingerprint == NULL);
491 c->ssl_state.ssl = SSL_new(ssl_ctx);
492 if (!c->ssl_state.ssl) {
493 LogOpenSSLError("Failed to create SSL structure", NULL);
496 Conn_OPTION_ADD(c, CONN_SSL);
498 ret = SSL_set_fd(c->ssl_state.ssl, c->sock);
500 LogOpenSSLError("Failed to set SSL file descriptor", NULL);
505 #ifdef HAVE_LIBGNUTLS
506 Conn_OPTION_ADD(c, CONN_SSL);
507 ret = gnutls_priority_set(c->ssl_state.gnutls_session, priorities_cache);
509 Log(LOG_ERR, "Failed to set GnuTLS session priorities: %s",
510 gnutls_strerror(ret));
515 * The intermediate (long) cast is here to avoid a warning like:
516 * "cast to pointer from integer of different size" on 64-bit platforms.
517 * There doesn't seem to be an alternate GNUTLS API we could use instead, see e.g.
518 * http://www.mail-archive.com/help-gnutls@gnu.org/msg00286.html
520 gnutls_transport_set_ptr(c->ssl_state.gnutls_session,
521 (gnutls_transport_ptr_t) (long) c->sock);
522 gnutls_certificate_server_set_request(c->ssl_state.gnutls_session,
523 GNUTLS_CERT_REQUEST);
524 ret = gnutls_credentials_set(c->ssl_state.gnutls_session,
525 GNUTLS_CRD_CERTIFICATE, x509_cred);
527 Log(LOG_ERR, "Failed to set SSL credentials: %s",
528 gnutls_strerror(ret));
532 gnutls_dh_set_prime_bits(c->ssl_state.gnutls_session, DH_BITS_MIN);
539 ConnSSL_PrepareConnect(CONNECTION *c, UNUSED CONF_SERVER *s)
542 #ifdef HAVE_LIBGNUTLS
545 err = gnutls_init(&c->ssl_state.gnutls_session, GNUTLS_CLIENT);
547 Log(LOG_ERR, "Failed to initialize new SSL session: %s",
548 gnutls_strerror(err));
552 ret = ConnSSL_Init_SSL(c);
555 Conn_OPTION_ADD(c, CONN_SSL_CONNECT);
557 assert(c->ssl_state.ssl);
558 SSL_set_verify(c->ssl_state.ssl, SSL_VERIFY_NONE, NULL);
565 * Check and handle error return codes after failed calls to SSL functions.
568 * SSL_connect(), SSL_accept(), SSL_do_handshake(), SSL_read(), SSL_peek(), or
569 * SSL_write() on ssl.
572 * gnutlsssl_read(), gnutls_write() or gnutls_handshake().
574 * @param c The connection handle.
575 * @prarm code The return code.
576 * @param fname The name of the function in which the error occurred.
577 * @return -1 on fatal errors, 0 if we can try again later.
580 ConnSSL_HandleError(CONNECTION * c, const int code, const char *fname)
583 int ret = SSL_ERROR_SYSCALL;
584 unsigned long sslerr;
585 int real_errno = errno;
587 ret = SSL_get_error(c->ssl_state.ssl, code);
590 case SSL_ERROR_WANT_READ:
591 io_event_del(c->sock, IO_WANTWRITE);
592 Conn_OPTION_ADD(c, CONN_SSL_WANT_READ);
593 return 0; /* try again later */
594 case SSL_ERROR_WANT_WRITE:
595 io_event_del(c->sock, IO_WANTREAD);
596 Conn_OPTION_ADD(c, CONN_SSL_WANT_WRITE); /* fall through */
598 return 0; /* try again later */
599 case SSL_ERROR_ZERO_RETURN:
600 LogDebug("SSL connection shut down normally.");
602 case SSL_ERROR_SYSCALL:
603 /* SSL_ERROR_WANT_CONNECT, SSL_ERROR_WANT_ACCEPT,
604 * and SSL_ERROR_WANT_X509_LOOKUP */
605 sslerr = ERR_get_error();
607 Log(LOG_ERR, "SSL error: %s [in %s()]!",
608 ERR_error_string(sslerr, NULL), fname);
610 switch (code) { /* EOF that violated protocol */
613 "SSL error, client disconnected [in %s()]!",
616 case -1: /* low level socket I/O error, check errno */
617 Log(LOG_ERR, "SSL error: %s [in %s()]!",
618 strerror(real_errno), fname);
623 LogOpenSSLError("SSL protocol error", fname);
626 Log(LOG_ERR, "Unknown SSL error %d [in %s()]!", ret, fname);
631 #ifdef HAVE_LIBGNUTLS
634 case GNUTLS_E_INTERRUPTED:
635 if (gnutls_record_get_direction(c->ssl_state.gnutls_session)) {
636 Conn_OPTION_ADD(c, CONN_SSL_WANT_WRITE);
637 io_event_del(c->sock, IO_WANTREAD);
639 Conn_OPTION_ADD(c, CONN_SSL_WANT_READ);
640 io_event_del(c->sock, IO_WANTWRITE);
645 if (gnutls_error_is_fatal(code)) {
646 Log(LOG_ERR, "SSL error: %s [%s].",
647 gnutls_strerror(code), fname);
658 ConnSSL_LogCertInfo( CONNECTION *c )
661 SSL *ssl = c->ssl_state.ssl;
665 Log(LOG_INFO, "Connection %d: initialized %s using cipher %s.",
666 c->sock, SSL_get_version(ssl), SSL_get_cipher(ssl));
668 #ifdef HAVE_LIBGNUTLS
669 gnutls_session_t sess = c->ssl_state.gnutls_session;
670 gnutls_cipher_algorithm_t cipher = gnutls_cipher_get(sess);
672 Log(LOG_INFO, "Connection %d: initialized %s using cipher %s-%s.",
674 gnutls_protocol_get_name(gnutls_protocol_get_version(sess)),
675 gnutls_cipher_get_name(cipher),
676 gnutls_mac_get_name(gnutls_mac_get(sess)));
682 Accept incoming SSL connection.
684 1: SSL Connection established
686 -1: SSL Connection not established due to fatal error.
689 ConnSSL_Accept( CONNECTION *c )
692 if (!Conn_OPTION_ISSET(c, CONN_SSL)) {
693 #ifdef HAVE_LIBGNUTLS
694 int err = gnutls_init(&c->ssl_state.gnutls_session, GNUTLS_SERVER);
696 Log(LOG_ERR, "Failed to initialize new SSL session: %s",
697 gnutls_strerror(err));
701 if (!ConnSSL_Init_SSL(c))
704 return ConnectAccept(c, false );
709 ConnSSL_Connect( CONNECTION *c )
713 assert(c->ssl_state.ssl);
715 assert(Conn_OPTION_ISSET(c, CONN_SSL));
716 return ConnectAccept(c, true);
720 ConnSSL_InitCertFp( CONNECTION *c )
722 const char hex[] = "0123456789abcdef";
726 unsigned char digest[EVP_MAX_MD_SIZE];
727 unsigned int digest_size;
730 cert = SSL_get_peer_certificate(c->ssl_state.ssl);
734 if (!X509_digest(cert, EVP_sha1(), digest, &digest_size)) {
740 #endif /* HAVE_LIBSSL */
741 #ifdef HAVE_LIBGNUTLS
742 gnutls_x509_crt_t cert;
743 unsigned int cert_list_size;
744 const gnutls_datum_t *cert_list;
745 unsigned char digest[MAX_HASH_SIZE];
748 if (gnutls_certificate_type_get(c->ssl_state.gnutls_session) != GNUTLS_CRT_X509)
751 if (gnutls_x509_crt_init(&cert) != GNUTLS_E_SUCCESS)
755 cert_list = gnutls_certificate_get_peers(c->ssl_state.gnutls_session,
758 gnutls_x509_crt_deinit(cert);
762 if (gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER) != GNUTLS_E_SUCCESS) {
763 gnutls_x509_crt_deinit(cert);
767 digest_size = sizeof(digest);
768 if (gnutls_x509_crt_get_fingerprint(cert, GNUTLS_DIG_SHA1, digest, &digest_size)) {
769 gnutls_x509_crt_deinit(cert);
773 gnutls_x509_crt_deinit(cert);
774 #endif /* HAVE_LIBGNUTLS */
776 assert(c->ssl_state.fingerprint == NULL);
778 c->ssl_state.fingerprint = malloc(SHA1_STRING_LEN);
779 if (!c->ssl_state.fingerprint)
782 for (i = 0; i < (int)digest_size; i++) {
783 c->ssl_state.fingerprint[i * 2] = hex[digest[i] / 16];
784 c->ssl_state.fingerprint[i * 2 + 1] = hex[digest[i] % 16];
786 c->ssl_state.fingerprint[i * 2] = '\0';
791 /* accept/connect wrapper. if connect is true, connect to peer, otherwise wait for incoming connection */
793 ConnectAccept( CONNECTION *c, bool connect)
797 SSL *ssl = c->ssl_state.ssl;
800 ret = connect ? SSL_connect(ssl) : SSL_accept(ssl);
802 return ConnSSL_HandleError(c, ret, connect ? "SSL_connect": "SSL_accept");
804 #ifdef HAVE_LIBGNUTLS
806 ret = gnutls_handshake(c->ssl_state.gnutls_session);
808 return ConnSSL_HandleError(c, ret, "gnutls_handshake");
810 (void)ConnSSL_InitCertFp(c);
812 Conn_OPTION_DEL(c, (CONN_SSL_WANT_WRITE|CONN_SSL_WANT_READ|CONN_SSL_CONNECT));
813 ConnSSL_LogCertInfo(c);
815 Conn_StartLogin(CONNECTION2ID(c));
821 ConnSSL_Write(CONNECTION *c, const void *buf, size_t count)
825 Conn_OPTION_DEL(c, CONN_SSL_WANT_WRITE|CONN_SSL_WANT_READ);
829 bw = (ssize_t) SSL_write(c->ssl_state.ssl, buf, count);
831 #ifdef HAVE_LIBGNUTLS
832 bw = gnutls_write(c->ssl_state.gnutls_session, buf, count);
836 if (ConnSSL_HandleError( c, bw, "ConnSSL_Write") == 0)
837 errno = EAGAIN; /* try again */
843 ConnSSL_Read(CONNECTION *c, void * buf, size_t count)
847 Conn_OPTION_DEL(c, CONN_SSL_WANT_WRITE|CONN_SSL_WANT_READ);
849 br = (ssize_t) SSL_read(c->ssl_state.ssl, buf, count);
850 if (br > 0) /* on EOF we have to call ConnSSL_HandleError(), see SSL_read(3) */
853 #ifdef HAVE_LIBGNUTLS
854 br = gnutls_read(c->ssl_state.gnutls_session, buf, count);
855 if (br >= 0) /* on EOF we must _not_ call ConnSSL_HandleError, see gnutls_record_recv(3) */
858 /* error on read: switch ConnSSL_HandleError() return values -> 0 is "try again", so return -1 and set EAGAIN */
859 if (ConnSSL_HandleError(c, br, "ConnSSL_Read") == 0) {
868 ConnSSL_GetCipherInfo(CONNECTION *c, char *buf, size_t len)
872 SSL *ssl = c->ssl_state.ssl;
877 SSL_CIPHER_description(SSL_get_current_cipher(ssl), buf, len);
878 nl = strchr(buf, '\n');
883 #ifdef HAVE_LIBGNUTLS
884 if (Conn_OPTION_ISSET(c, CONN_SSL)) {
885 const char *name_cipher, *name_mac, *name_proto, *name_keyexchange;
888 gnutls_session_t sess = c->ssl_state.gnutls_session;
889 gnutls_cipher_algorithm_t cipher = gnutls_cipher_get(sess);
890 name_cipher = gnutls_cipher_get_name(cipher);
891 name_mac = gnutls_mac_get_name(gnutls_mac_get(sess));
892 keysize = gnutls_cipher_get_key_size(cipher) * 8;
893 name_proto = gnutls_protocol_get_name(gnutls_protocol_get_version(sess));
894 name_keyexchange = gnutls_kx_get_name(gnutls_kx_get(sess));
896 return snprintf(buf, len, "%s-%s%15s Kx=%s Enc=%s(%u) Mac=%s",
897 name_cipher, name_mac, name_proto, name_keyexchange, name_cipher, keysize, name_mac) > 0;
904 ConnSSL_GetCertFp(CONNECTION *c)
906 return c->ssl_state.fingerprint;
910 ConnSSL_SetCertFp(CONNECTION *c, const char *fingerprint)
913 c->ssl_state.fingerprint = strndup(fingerprint, SHA1_STRING_LEN - 1);
914 return c->ssl_state.fingerprint != NULL;
919 ConnSSL_InitLibrary(void)
924 #endif /* SSL_SUPPORT */