X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/348051adc5ea922f4e82d971d44f03e87557b6ec..fcc49dcf3e1c6b66876f3fd03b5a717816145358:/test/src/client.c?ds=sidebyside diff --git a/test/src/client.c b/test/src/client.c index e7210f223..f34cf784c 100644 --- a/test/src/client.c +++ b/test/src/client.c @@ -24,6 +24,7 @@ ripped from the openssl ocsp and s_client utilities. */ #include #include #include +#include #include #include @@ -58,7 +59,6 @@ static int sigalrm_seen = 0; /* TLS support can be optionally included, either for OpenSSL or GnuTLS. The latter needs a whole pile of tables. */ - #ifdef HAVE_OPENSSL # define HAVE_TLS # include @@ -67,7 +67,14 @@ latter needs a whole pile of tables. */ # include # include # include -# include + +# if OPENSSL_VERSION_NUMBER < 0x0090806fL && !defined(DISABLE_OCSP) && !defined(OPENSSL_NO_TLSEXT) +# warning "OpenSSL library version too old; define DISABLE_OCSP in Makefile" +# define DISABLE_OCSP +# endif +# ifndef DISABLE_OCSP +# include +# endif #endif @@ -79,20 +86,24 @@ latter needs a whole pile of tables. */ # define HAVE_OCSP # include # endif +# ifndef GNUTLS_NO_EXTENSIONS +# define GNUTLS_NO_EXTENSIONS 0 +# endif # define DH_BITS 768 /* Local static variables for GNUTLS */ -static gnutls_dh_params dh_params = NULL; +static gnutls_dh_params_t dh_params = NULL; static gnutls_certificate_credentials_t x509_cred = NULL; -static gnutls_session tls_session = NULL; +static gnutls_session_t tls_session = NULL; static int ssl_session_timeout = 200; /* Priorities for TLS algorithms to use. */ +#if GNUTLS_VERSION_NUMBER < 0x030400 static const int protocol_priority[16] = { GNUTLS_TLS1, GNUTLS_SSL3, 0 }; static const int kx_priority[16] = { @@ -114,7 +125,7 @@ static const int mac_priority[16] = { 0 }; static const int comp_priority[16] = { GNUTLS_COMP_NULL, 0 }; -static const int cert_type_priority[16] = { GNUTLS_CRT_X509, 0 }; +#endif #endif /*HAVE_GNUTLS*/ @@ -155,36 +166,30 @@ sigalrm_seen = 1; /****************************************************************************/ #ifdef HAVE_OPENSSL +# ifndef DISABLE_OCSP + +static STACK_OF(X509) * +chain_from_pem_file(const uschar * file) +{ +BIO * bp; +X509 * x; +STACK_OF(X509) * sk; + +if (!(sk = sk_X509_new_null())) return NULL; +if (!(bp = BIO_new_file(CS file, "r"))) return NULL; +while ((x = PEM_read_bio_X509(bp, NULL, 0, NULL))) + sk_X509_push(sk, x); +BIO_free(bp); +return sk; +} + -X509_STORE * -setup_verify(BIO *bp, char *CAfile, char *CApath) + +static void +cert_stack_free(STACK_OF(X509) * sk) { - X509_STORE *store; - X509_LOOKUP *lookup; - if(!(store = X509_STORE_new())) goto end; - lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file()); - if (lookup == NULL) goto end; - if (CAfile) { - if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) { - BIO_printf(bp, "Error loading file %s\n", CAfile); - goto end; - } - } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT); - - lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir()); - if (lookup == NULL) goto end; - if (CApath) { - if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) { - BIO_printf(bp, "Error loading directory %s\n", CApath); - goto end; - } - } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT); - - ERR_clear_error(); - return store; - end: - X509_STORE_free(store); - return NULL; +while (sk_X509_num(sk) > 0) (void) sk_X509_pop(sk); +sk_X509_free(sk); } @@ -195,8 +200,7 @@ const unsigned char *p; int len; OCSP_RESPONSE *rsp; OCSP_BASICRESP *bs; -char *CAfile = NULL; -X509_STORE *store = NULL; +STACK_OF(X509) * sk; int ret = 1; len = SSL_get_tlsext_status_ocsp_resp(s, &p); @@ -218,15 +222,19 @@ if(!(bs = OCSP_response_get1_basic(rsp))) return 0; } -CAfile = ocsp_stapling; -if(!(store = setup_verify(arg, CAfile, NULL))) + +if (!(sk = chain_from_pem_file(ocsp_stapling))) { BIO_printf(arg, "error in cert setup\n"); return 0; } -/* No file of alternate certs, no options */ -if(OCSP_basic_verify(bs, NULL, store, 0) <= 0) +/* OCSP_basic_verify takes a "store" arg, but does not +use it for the chain verification, which is all we do +when OCSP_NOVERIFY is set. The content from the wire +(in "bs") and a cert-stack "sk" are all that is used. */ + +if(OCSP_basic_verify(bs, sk, NULL, OCSP_NOVERIFY) <= 0) { BIO_printf(arg, "Response Verify Failure\n"); ERR_print_errors(arg); @@ -235,9 +243,10 @@ if(OCSP_basic_verify(bs, NULL, store, 0) <= 0) else BIO_printf(arg, "Response verify OK\n"); -X509_STORE_free(store); +cert_stack_free(sk); return ret; } +# endif /*DISABLE_OCSP*/ /************************************************* @@ -248,21 +257,23 @@ int tls_start(int sock, SSL **ssl, SSL_CTX *ctx) { int rc; -static const char *sid_ctx = "exim"; +static const unsigned char *sid_ctx = US"exim"; RAND_load_file("client.c", -1); /* Not *very* random! */ *ssl = SSL_new (ctx); -SSL_set_session_id_context(*ssl, sid_ctx, strlen(sid_ctx)); +SSL_set_session_id_context(*ssl, sid_ctx, strlen(CS sid_ctx)); SSL_set_fd (*ssl, sock); SSL_set_connect_state(*ssl); +#ifndef DISABLE_OCSP if (ocsp_stapling) { SSL_CTX_set_tlsext_status_cb(ctx, tls_client_stapling_cb); SSL_CTX_set_tlsext_status_arg(ctx, BIO_new_fp(stdout, BIO_NOCLOSE)); SSL_set_tlsext_status_type(*ssl, TLSEXT_STATUSTYPE_ocsp); } +#endif signal(SIGALRM, sigalrm_handler_flag); sigalrm_seen = 0; @@ -326,7 +337,7 @@ gnutls_error(uschar *prefix, int err) fprintf(stderr, "GnuTLS connection error: %s:", prefix); if (err != 0) fprintf(stderr, " %s", gnutls_strerror(err)); fprintf(stderr, "\n"); -exit(1); +exit(98); } @@ -343,7 +354,7 @@ init_dh(void) { int fd; int ret; -gnutls_datum m; +gnutls_datum_t m; uschar filename[200]; struct stat statbuf; @@ -359,7 +370,7 @@ fd = open("aux-fixed/gnutls-params", O_RDONLY, 0); if (fd < 0) { fprintf(stderr, "Failed to open spool/gnutls-params: %s\n", strerror(errno)); - exit(1); + exit(97); } if (fstat(fd, &statbuf) < 0) @@ -436,13 +447,14 @@ if (ocsp_stapling) * Initialize a single GNUTLS session * *************************************************/ -static gnutls_session +static gnutls_session_t tls_session_init(void) { -gnutls_session session; +gnutls_session_t session; -gnutls_init(&session, GNUTLS_CLIENT); +gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_NO_EXTENSIONS); +#if GNUTLS_VERSION_NUMBER < 0x030400 gnutls_cipher_set_priority(session, default_cipher_priority); gnutls_compression_set_priority(session, comp_priority); gnutls_kx_set_priority(session, kx_priority); @@ -450,6 +462,10 @@ gnutls_protocol_set_priority(session, protocol_priority); gnutls_mac_set_priority(session, mac_priority); gnutls_cred_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); +#else +gnutls_set_default_priority(session); +gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); +#endif gnutls_dh_set_prime_bits(session, DH_BITS); gnutls_db_set_cache_expiration(session, ssl_session_timeout); @@ -460,6 +476,44 @@ return session; /****************************************************************************/ +/* Turn "\n" and "\r" into the relevant characters. This is a hack. */ + +static int +unescape_buf(unsigned char * buf, int len) +{ +unsigned char * s; +unsigned char c, t; +unsigned shift; + +for (s = buf; s < buf+len; s++) if (*s == '\\') + { + switch (s[1]) + { + default: c = s[1]; shift = 1; break; + case 'n': c = '\n'; shift = 1; break; + case 'r': c = '\r'; shift = 1; break; + case 'x': + t = s[2]; + if (t >= 'A' && t <= 'F') t -= 'A'-'9'-1; + else if (t >= 'a' && t <= 'f') t -= 'a'-'9'-1; + t -= '0'; + c = (t<<4) & 0xf0; + t = s[3]; + if (t >= 'A' && t <= 'F') t -= 'A'-'9'-1; + else if (t >= 'a' && t <= 'f') t -= 'a'-'9'-1; + t -= '0'; + c |= t & 0xf; + shift = 3; + break; + } + *s = c; + memmove(s+1, s+shift+1, len-shift); + len -= shift; + } +return len; +} + + /****************************************************************************/ @@ -470,7 +524,14 @@ return session; *************************************************/ const char * const HELP_MESSAGE = "\n\ -Usage: client\n\ +Usage: client\n" +#ifdef HAVE_TLS +"\ + [-tls-on-connect]\n\ + [-ocsp]\n" +#endif +"\ + [-tn] n seconds timeout\n\ \n\ \n\ []\n\ @@ -478,7 +539,8 @@ Usage: client\n\ []\n\ \n"; -int main(int argc, char **argv) +int +main(int argc, char **argv) { struct sockaddr *s_ptr; struct sockaddr_in s_in4; @@ -489,7 +551,7 @@ char *keyfile = NULL; char *end = NULL; int argi = 1; int host_af, port, s_len, rc, sock, save_errno; -int timeout = 1; +int timeout = 5; int tls_active = 0; int sent_starttls = 0; int tls_on_connect = 0; @@ -518,7 +580,7 @@ while (argc >= argi + 1 && argv[argi][0] == '-') strcmp(argv[argi], "--help") == 0 || strcmp(argv[argi], "-h") == 0) { - printf(HELP_MESSAGE); + puts(HELP_MESSAGE); exit(0); } if (strcmp(argv[argi], "-tls-on-connect") == 0) @@ -532,7 +594,7 @@ while (argc >= argi + 1 && argv[argi][0] == '-') if (argc < ++argi + 1) { fprintf(stderr, "Missing required certificate file for ocsp option\n"); - exit(1); + exit(96); } ocsp_stapling = argv[argi++]; } @@ -545,18 +607,18 @@ while (argc >= argi + 1 && argv[argi][0] == '-') { fprintf(stderr, "Failed to parse seconds from option <%s>\n", argv[argi]); - exit(1); + exit(95); } if (tmplong > 10000L) { - fprintf(stderr, "Unreasonably long wait of %d seconds requested\n", + fprintf(stderr, "Unreasonably long wait of %ld seconds requested\n", tmplong); - exit(1); + exit(94); } if (tmplong < 0L) { - fprintf(stderr, "Timeout must not be negative (%d)\n", tmplong); - exit(1); + fprintf(stderr, "Timeout must not be negative (%ld)\n", tmplong); + exit(93); } timeout = (int) tmplong; argi++; @@ -564,7 +626,7 @@ while (argc >= argi + 1 && argv[argi][0] == '-') else { fprintf(stderr, "Unrecognized option %s\n", argv[argi]); - exit(1); + exit(92); } } @@ -573,7 +635,7 @@ while (argc >= argi + 1 && argv[argi][0] == '-') if (argc < argi+1) { fprintf(stderr, "No IP address given\n"); - exit(1); + exit(91); } address = argv[argi++]; @@ -584,7 +646,7 @@ host_af = (strchr(address, ':') != NULL)? AF_INET6 : AF_INET; if (argc < argi+1) { fprintf(stderr, "No port number given\n"); - exit(1); + exit(90); } port = atoi(argv[argi++]); @@ -626,7 +688,7 @@ sock = socket(host_af, SOCK_STREAM, 0); if (sock < 0) { printf("socket creation failed: %s\n", strerror(errno)); - exit(1); + exit(89); } /* Bind to a specific interface if requested. On an IPv6 system, this has @@ -651,7 +713,7 @@ if (interface != NULL) if (inet_pton(AF_INET6, interface, &s_in6.sin6_addr) != 1) { printf("Unable to parse \"%s\"", interface); - exit(1); + exit(88); } } else @@ -672,7 +734,7 @@ if (interface != NULL) { printf("Unable to bind outgoing SMTP call to %s: %s", interface, strerror(errno)); - exit(1); + exit(87); } } } @@ -688,7 +750,7 @@ if (host_af == AF_INET6) if (inet_pton(host_af, address, &s_in6.sin6_addr) != 1) { printf("Unable to parse \"%s\"", address); - exit(1); + exit(86); } } else @@ -717,8 +779,8 @@ an externally applied timeout if the signal handler has been run. */ if (rc < 0) { close(sock); - printf("failed: %s\n", strerror(save_errno)); - exit(1); + printf("connect failed: %s\n", strerror(save_errno)); + exit(85); } printf("connected\n"); @@ -734,7 +796,7 @@ ctx = SSL_CTX_new(SSLv23_method()); if (ctx == NULL) { printf ("SSL_CTX_new failed\n"); - exit(1); + exit(84); } if (certfile != NULL) @@ -742,7 +804,7 @@ if (certfile != NULL) if (!SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM)) { printf("SSL_CTX_use_certificate_file failed\n"); - exit(1); + exit(83); } printf("Certificate file = %s\n", certfile); } @@ -752,7 +814,7 @@ if (keyfile != NULL) if (!SSL_CTX_use_PrivateKey_file(ctx, keyfile, SSL_FILETYPE_PEM)) { printf("SSL_CTX_use_PrivateKey_file failed\n"); - exit(1); + exit(82); } printf("Key file = %s\n", keyfile); } @@ -774,7 +836,7 @@ tls_session = tls_session_init(); if (ocsp_stapling) gnutls_ocsp_status_request_enable_client(tls_session, NULL, 0, NULL); #endif -gnutls_transport_set_ptr(tls_session, (gnutls_transport_ptr)sock); +gnutls_transport_set_ptr(tls_session, (gnutls_transport_ptr_t)(intptr_t)sock); /* When the server asks for a certificate and the client does not have one, there is a SIGPIPE error in the gnutls_handshake() function for some reason @@ -795,41 +857,56 @@ if (tls_on_connect) { printf("Attempting to start TLS\n"); - #ifdef HAVE_OPENSSL +#ifdef HAVE_OPENSSL tls_active = tls_start(sock, &ssl, ctx); - #endif +#endif - #ifdef HAVE_GNUTLS +#ifdef HAVE_GNUTLS + { + int rc; sigalrm_seen = FALSE; alarm(timeout); - tls_active = gnutls_handshake(tls_session) >= 0; + do { + rc = gnutls_handshake(tls_session); + } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); + tls_active = rc >= 0; alarm(0); - #endif + + if (!tls_active) printf("%s\n", gnutls_strerror(rc)); + } +#endif if (!tls_active) printf("Failed to start TLS\n"); - #if defined(HAVE_GNUTLS) && defined(HAVE_OCSP) +#if defined(HAVE_GNUTLS) && defined(HAVE_OCSP) else if ( ocsp_stapling && gnutls_ocsp_status_request_is_checked(tls_session, 0) == 0) printf("Failed to verify certificate status\n"); - #endif +#endif else printf("Succeeded in starting TLS\n"); } #endif -while (fgets(outbuffer, sizeof(outbuffer), stdin) != NULL) +while (fgets(CS outbuffer, sizeof(outbuffer), stdin) != NULL) { - int n = (int)strlen(outbuffer); - while (n > 0 && isspace(outbuffer[n-1])) n--; - outbuffer[n] = 0; + int n = (int)strlen(CS outbuffer); + int crlf = 1; + + /* Strip trailing newline */ + if (outbuffer[n-1] == '\n') outbuffer[--n] = 0; /* Expect incoming */ - if (strncmp(outbuffer, "??? ", 4) == 0) + if ( strncmp(CS outbuffer, "???", 3) == 0 + && (outbuffer[3] == ' ' || outbuffer[3] == '*') + ) { unsigned char *lineptr; + unsigned exp_eof = outbuffer[3] == '*'; + printf("%s\n", outbuffer); + n = unescape_buf(outbuffer, n); if (*inptr == 0) /* Refill input buffer */ { @@ -850,15 +927,27 @@ while (fgets(outbuffer, sizeof(outbuffer), stdin) != NULL) } if (rc < 0) - { + { printf("Read error %s\n", strerror(errno)); - exit(1) ; - } + exit(81); + } else if (rc == 0) + if (exp_eof) + { + printf("Expected EOF read\n"); + continue; + } + else + { + printf("Unexpected EOF read\n"); + close(sock); + exit(80); + } + else if (exp_eof) { - printf("Unexpected EOF read\n"); + printf("Expected EOF not read\n"); close(sock); - exit(1); + exit(74); } else { @@ -876,10 +965,10 @@ while (fgets(outbuffer, sizeof(outbuffer), stdin) != NULL) } printf("<<< %s\n", lineptr); - if (strncmp(lineptr, outbuffer + 4, (int)strlen(outbuffer) - 4) != 0) + if (strncmp(CS lineptr, CS outbuffer + 4, n - 4) != 0) { printf("\n******** Input mismatch ********\n"); - exit(1); + exit(79); } #ifdef HAVE_TLS @@ -898,10 +987,18 @@ int rc; #endif #ifdef HAVE_GNUTLS - sigalrm_seen = FALSE; - alarm(timeout); - tls_active = gnutls_handshake(tls_session) >= 0; - alarm(0); + { + int rc; + sigalrm_seen = FALSE; + alarm(timeout); + do { + rc = gnutls_handshake(tls_session); + } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); + tls_active = rc >= 0; + alarm(0); + + if (!tls_active) printf("%s\n", gnutls_strerror(rc)); + } #endif if (!tls_active) @@ -958,36 +1055,43 @@ int rc; /* Wait for a bit before proceeding */ - else if (strncmp(outbuffer, "+++ ", 4) == 0) + else if (strncmp(CS outbuffer, "+++ ", 4) == 0) { printf("%s\n", outbuffer); - sleep(atoi(outbuffer + 4)); + sleep(atoi(CS outbuffer + 4)); } /* Send outgoing, but barf if unconsumed incoming */ else { - unsigned char *escape; + unsigned char * out = outbuffer; + + if (strncmp(CS outbuffer, ">>> ", 4) == 0) + { + crlf = 0; + out += 4; + n -= 4; + } if (*inptr != 0) { printf("Unconsumed input: %s", inptr); - printf(" About to send: %s\n", outbuffer); - exit(1); + printf(" About to send: %s\n", out); + exit(78); } #ifdef HAVE_TLS /* Shutdown TLS */ - if (strcmp(outbuffer, "stoptls") == 0 || - strcmp(outbuffer, "STOPTLS") == 0) + if (strcmp(CS out, "stoptls") == 0 || + strcmp(CS out, "STOPTLS") == 0) { if (!tls_active) { printf("STOPTLS read when TLS not active\n"); - exit(1); + exit(77); } printf("Shutting down TLS encryption\n"); @@ -1009,38 +1113,28 @@ int rc; /* Remember that we sent STARTTLS */ - sent_starttls = (strcmp(outbuffer, "starttls") == 0 || - strcmp(outbuffer, "STARTTLS") == 0); + sent_starttls = (strcmp(CS out, "starttls") == 0 || + strcmp(CS out, "STARTTLS") == 0); /* Fudge: if the command is "starttls_wait", we send the starttls bit, but we haven't set the flag, so that there is no negotiation. This is for testing the server's timeout. */ - if (strcmp(outbuffer, "starttls_wait") == 0) + if (strcmp(CS out, "starttls_wait") == 0) { - outbuffer[8] = 0; + out[8] = 0; n = 8; } #endif - printf(">>> %s\n", outbuffer); - strcpy(outbuffer + n, "\r\n"); - - /* Turn "\n" and "\r" into the relevant characters. This is a hack. */ - - while ((escape = strstr(outbuffer, "\\r")) != NULL) + printf(">>> %s\n", out); + if (crlf) { - *escape = '\r'; - memmove(escape + 1, escape + 2, (n + 2) - (escape - outbuffer) - 2); - n--; + strcpy(CS out + n, "\r\n"); + n += 2; } - while ((escape = strstr(outbuffer, "\\n")) != NULL) - { - *escape = '\n'; - memmove(escape + 1, escape + 2, (n + 2) - (escape - outbuffer) - 2); - n--; - } + n = unescape_buf(out, n); /* OK, do it */ @@ -1048,32 +1142,31 @@ int rc; if (tls_active) { #ifdef HAVE_OPENSSL - rc = SSL_write (ssl, outbuffer, n + 2); + rc = SSL_write (ssl, out, n); #endif #ifdef HAVE_GNUTLS - rc = gnutls_record_send(tls_session, CS outbuffer, n + 2); - if (rc < 0) + if ((rc = gnutls_record_send(tls_session, CS out, n)) < 0) { printf("GnuTLS write error: %s\n", gnutls_strerror(rc)); - exit(1); + exit(76); } #endif } else - { - rc = write(sock, outbuffer, n + 2); - } + rc = write(sock, out, n); alarm(0); if (rc < 0) { printf("Write error: %s\n", strerror(errno)); - exit(1); + exit(75); } } } printf("End of script\n"); +shutdown(sock, SHUT_WR); +while ((rc = read(sock, inbuffer, sizeof(inbuffer))) > 0) ; close(sock); exit(0);