X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/c55a77db55ebf46a399f136eeb3a928b1e862772..2b665c130a451eb5bfa7315ad6854b83db73d9a3:/test/src/client.c diff --git a/test/src/client.c b/test/src/client.c index 0a2159472..be8b1cc0d 100644 --- a/test/src/client.c +++ b/test/src/client.c @@ -1,9 +1,8 @@ -/* $Cambridge: exim/test/src/client.c,v 1.1 2006/02/06 16:24:05 ph10 Exp $ */ - /* A little hacked up program that makes a TCP/IP call and reads a script to drive it, for testing Exim server code running as a daemon. It's got a bit messy with the addition of support for either OpenSSL or GnuTLS. The code for -those was hacked out of Exim itself. */ +those was hacked out of Exim itself, then code for OpenSSL OCSP stapling was +ripped from the openssl ocsp and s_client utilities. */ /* ANSI C standard includes */ @@ -25,6 +24,7 @@ those was hacked out of Exim itself. */ #include #include #include +#include #include #include @@ -59,45 +59,57 @@ 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 -#include -#include -#include -#include -#include +# define HAVE_TLS +# include +# include +# 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 #ifdef HAVE_GNUTLS -#define HAVE_TLS -#include -#include - -#define DH_BITS 768 -#define RSA_BITS 512 +# define HAVE_TLS +# include +# include +# if GNUTLS_VERSION_NUMBER >= 0x030103 +# 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_rsa_params rsa_params = NULL; -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] = { GNUTLS_KX_RSA, GNUTLS_KX_DHE_DSS, GNUTLS_KX_DHE_RSA, - GNUTLS_KX_RSA_EXPORT, 0 }; static int default_cipher_priority[16] = { @@ -113,12 +125,17 @@ 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 +#endif /*HAVE_GNUTLS*/ +#ifdef HAVE_TLS +char * ocsp_stapling = NULL; +char * pri_string = NULL; +#endif + /************************************************* * SIGALRM handler - crash out * @@ -150,22 +167,115 @@ 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; +} + + + +static void +cert_stack_free(STACK_OF(X509) * sk) +{ +while (sk_X509_num(sk) > 0) (void) sk_X509_pop(sk); +sk_X509_free(sk); +} + + +static int +tls_client_stapling_cb(SSL *s, void *arg) +{ +const unsigned char *p; +int len; +OCSP_RESPONSE *rsp; +OCSP_BASICRESP *bs; +STACK_OF(X509) * sk; +int ret = 1; + +len = SSL_get_tlsext_status_ocsp_resp(s, &p); +/*BIO_printf(arg, "OCSP response: ");*/ +if (!p) + { + BIO_printf(arg, "no response received\n"); + return 1; + } +if(!(rsp = d2i_OCSP_RESPONSE(NULL, &p, len))) + { + BIO_printf(arg, "response parse error\n"); + BIO_dump_indent(arg, (char *)p, len, 4); + return 0; + } +if(!(bs = OCSP_response_get1_basic(rsp))) + { + BIO_printf(arg, "error parsing response\n"); + return 0; + } + + +if (!(sk = chain_from_pem_file(ocsp_stapling))) + { + BIO_printf(arg, "error in cert setup\n"); + return 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); + ret = 0; + } +else + BIO_printf(arg, "Response verify OK\n"); + +cert_stack_free(sk); +return ret; +} +# endif /*DISABLE_OCSP*/ + + /************************************************* * Start an OpenSSL TLS session * *************************************************/ -int tls_start(int sock, SSL **ssl, SSL_CTX *ctx) +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; alarm(5); @@ -225,49 +335,43 @@ Returns: doesn't - it dies static void gnutls_error(uschar *prefix, int err) { -fprintf(stderr, "GnuTLS connection error:%s", prefix); +fprintf(stderr, "GnuTLS connection error: %s:", prefix); if (err != 0) fprintf(stderr, " %s", gnutls_strerror(err)); fprintf(stderr, "\n"); -exit(1); +exit(98); } /************************************************* -* Setup up RSA and DH parameters * +* Setup up DH parameters * *************************************************/ /* For the test suite, the parameters should always be available in the spool directory. */ static void -init_rsa_dh(void) +init_dh(void) { int fd; int ret; -gnutls_datum m; +gnutls_datum_t m; uschar filename[200]; struct stat statbuf; /* Initialize the data structures for holding the parameters */ -ret = gnutls_rsa_params_init(&rsa_params); -if (ret < 0) gnutls_error(US"init rsa_params", ret); - ret = gnutls_dh_params_init(&dh_params); if (ret < 0) gnutls_error(US"init dh_params", ret); /* Open the cache file for reading and if successful, read it and set up the -parameters. If we can't set up the RSA parameters, assume that we are dealing -with an old-style cache file that is in another format, and fall through to -compute new values. However, if we correctly get RSA parameters, a failure to -set up D-H parameters is treated as an error. */ +parameters. */ 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) @@ -284,8 +388,6 @@ if (read(fd, m.data, m.size) != m.size) return gnutls_error(US"TLS cache read failed", 0); (void)close(fd); -ret = gnutls_rsa_params_import_pkcs1(rsa_params, &m, GNUTLS_X509_FMT_PEM); -if (ret < 0) return gnutls_error(US"RSA params import", ret); ret = gnutls_dh_params_import_pkcs3(dh_params, &m, GNUTLS_X509_FMT_PEM); if (ret < 0) return gnutls_error(US"DH params import", ret); free(m.data); @@ -312,9 +414,9 @@ int rc; rc = gnutls_global_init(); if (rc < 0) gnutls_error(US"gnutls_global_init", rc); -/* Read RSA and D-H parameters from the cache file. */ +/* Read D-H parameters from the cache file. */ -init_rsa_dh(); +init_dh(); /* Create the credentials structure */ @@ -333,7 +435,11 @@ if (certificate != NULL) /* Associate the parameters with the x509 credentials structure. */ gnutls_certificate_set_dh_params(x509_cred, dh_params); -gnutls_certificate_set_rsa_export_params(x509_cred, rsa_params); + +/* set the CA info for server-cert verify */ +if (ocsp_stapling) + gnutls_certificate_set_x509_trust_file(x509_cred, ocsp_stapling, + GNUTLS_X509_FMT_PEM); } @@ -342,13 +448,14 @@ gnutls_certificate_set_rsa_export_params(x509_cred, rsa_params); * 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); @@ -356,6 +463,19 @@ gnutls_protocol_set_priority(session, protocol_priority); gnutls_mac_set_priority(session, mac_priority); gnutls_cred_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); +# else +if (pri_string) + { + gnutls_priority_t priority_cache; + const char * errpos; + + gnutls_priority_init(&priority_cache, pri_string, &errpos); + gnutls_priority_set(session, priority_cache); + } +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); @@ -366,7 +486,352 @@ 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; +} + + /****************************************************************************/ +typedef struct { + int sock; + int tls_active; +#ifdef HAVE_OPENSSL + SSL_CTX * ctx; + SSL * ssl; +#endif + int sent_starttls; +} srv_ctx; + +static void +do_file(srv_ctx * srv, FILE * f, int timeout, + unsigned char * inbuffer, unsigned bsiz, unsigned char * inptr) +{ +unsigned char outbuffer[1024 * 20]; + +while (fgets(CS outbuffer, sizeof(outbuffer), f) != NULL) + { + int n = (int)strlen(CS outbuffer); + int crlf = 1; + int rc; + + /* Strip trailing newline */ + if (outbuffer[n-1] == '\n') outbuffer[--n] = 0; + + /* Expect incoming */ + + 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 */ + { + if (srv->tls_active) + { + #ifdef HAVE_OPENSSL + rc = SSL_read (srv->ssl, inbuffer, bsiz - 1); + #endif + #ifdef HAVE_GNUTLS + rc = gnutls_record_recv(tls_session, CS inbuffer, bsiz - 1); + #endif + } + else + { + alarm(timeout); + rc = read(srv->sock, inbuffer, bsiz); + alarm(0); + } + + if (rc < 0) + { + printf("Read error %s\n", strerror(errno)); + exit(81); + } + else if (rc == 0) + if (exp_eof) + { + printf("Expected EOF read\n"); + continue; + } + else + { + printf("Unexpected EOF read\n"); + close(srv->sock); + exit(80); + } + else if (exp_eof) + { + printf("Expected EOF not read\n"); + close(srv->sock); + exit(74); + } + else + { + inbuffer[rc] = 0; + inptr = inbuffer; + } + } + + lineptr = inptr; + while (*inptr != 0 && *inptr != '\r' && *inptr != '\n') inptr++; + if (*inptr != 0) + { + *inptr++ = 0; + if (*inptr == '\n') inptr++; + } + + printf("<<< %s\n", lineptr); + if (strncmp(CS lineptr, CS outbuffer + 4, n - 4) != 0) + { + printf("\n******** Input mismatch ********\n"); + exit(79); + } + + #ifdef HAVE_TLS + if (srv->sent_starttls) + { + if (lineptr[0] == '2') + { +int rc; + unsigned int verify; + + printf("Attempting to start TLS\n"); + fflush(stdout); + + #ifdef HAVE_OPENSSL + srv->tls_active = tls_start(srv->sock, &srv->ssl, srv->ctx); + #endif + + #ifdef HAVE_GNUTLS + { + int rc; + sigalrm_seen = FALSE; + alarm(timeout); + do { + rc = gnutls_handshake(tls_session); + } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); + srv->tls_active = rc >= 0; + alarm(0); + + if (!srv->tls_active) printf("%s\n", gnutls_strerror(rc)); + } + #endif + + if (!srv->tls_active) + { + printf("Failed to start TLS\n"); + fflush(stdout); + } + #ifdef HAVE_GNUTLS + else if (ocsp_stapling) + { + if ((rc= gnutls_certificate_verify_peers2(tls_session, &verify)) < 0) + { + printf("Failed to verify certificate: %s\n", gnutls_strerror(rc)); + fflush(stdout); + } + else if (verify & (GNUTLS_CERT_INVALID|GNUTLS_CERT_REVOKED)) + { + printf("Bad certificate\n"); + fflush(stdout); + } + #ifdef HAVE_OCSP + else if (gnutls_ocsp_status_request_is_checked(tls_session, 0) == 0) + { + printf("Failed to verify certificate status\n"); + { + gnutls_datum_t stapling; + gnutls_ocsp_resp_t resp; + gnutls_datum_t printed; + if ( (rc= gnutls_ocsp_status_request_get(tls_session, &stapling)) == 0 + && (rc= gnutls_ocsp_resp_init(&resp)) == 0 + && (rc= gnutls_ocsp_resp_import(resp, &stapling)) == 0 + && (rc= gnutls_ocsp_resp_print(resp, GNUTLS_OCSP_PRINT_FULL, &printed)) == 0 + ) + { + fprintf(stderr, "%.4096s", printed.data); + gnutls_free(printed.data); + } + else + (void) fprintf(stderr,"ocsp decode: %s", gnutls_strerror(rc)); + } + fflush(stdout); + } + #endif + } + #endif + else + printf("Succeeded in starting TLS\n"); + } + else printf("Abandoning TLS start attempt\n"); + } + srv->sent_starttls = 0; + #endif + } + + /* Wait for a bit before proceeding */ + + else if (strncmp(CS outbuffer, "+++ ", 4) == 0) + { + printf("%s\n", outbuffer); + sleep(atoi(CS outbuffer + 4)); + } + + /* Stack new input file */ + + else if (strncmp(CS outbuffer, "<<< ", 4) == 0) + { + FILE * new_f; + if (!(new_f = fopen(outbuffer+4 , "r"))) + { + printf("Unable to open '%s': %s", inptr, strerror(errno)); + exit(74); + } + do_file(srv, new_f, timeout, inbuffer, bsiz, inptr); + } + + + /* Send line outgoing, but barf if unconsumed incoming */ + + else + { + 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", out); + exit(78); + } + + #ifdef HAVE_TLS + + /* Shutdown TLS */ + + if (strcmp(CS out, "stoptls") == 0 || + strcmp(CS out, "STOPTLS") == 0) + { + if (!srv->tls_active) + { + printf("STOPTLS read when TLS not active\n"); + exit(77); + } + printf("Shutting down TLS encryption\n"); + + #ifdef HAVE_OPENSSL + SSL_shutdown(srv->ssl); + SSL_free(srv->ssl); + #endif + + #ifdef HAVE_GNUTLS + gnutls_bye(tls_session, GNUTLS_SHUT_WR); + gnutls_deinit(tls_session); + tls_session = NULL; + gnutls_global_deinit(); + #endif + + srv->tls_active = 0; + continue; + } + + /* Remember that we sent STARTTLS */ + + srv->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(CS out, "starttls_wait") == 0) + { + out[8] = 0; + n = 8; + } + #endif + + printf(">>> %s\n", out); + if (crlf) + { + strcpy(CS out + n, "\r\n"); + n += 2; + } + + n = unescape_buf(out, n); + + /* OK, do it */ + + alarm(timeout); + if (srv->tls_active) + { + #ifdef HAVE_OPENSSL + rc = SSL_write (srv->ssl, out, n); + #endif + #ifdef HAVE_GNUTLS + if ((rc = gnutls_record_send(tls_session, CS out, n)) < 0) + { + printf("GnuTLS write error: %s\n", gnutls_strerror(rc)); + exit(76); + } + #endif + } + else + rc = write(srv->sock, out, n); + alarm(0); + + if (rc < 0) + { + printf("Write error: %s\n", strerror(errno)); + exit(75); + } + } + } +} @@ -375,15 +840,28 @@ return session; * Main Program * *************************************************/ -/* Usage: client - - - [] - [] - [] -*/ - -int main(int argc, char **argv) +const char * const HELP_MESSAGE = "\n\ +Usage: client\n" +#ifdef HAVE_TLS +"\ + [-tls-on-connect]\n\ + [-ocsp]\n" +# ifdef HAVE_GNUTLS +"\ + [-p priority-string]\n" +# endif +#endif +"\ + [-tn] n seconds timeout\n\ + \n\ + \n\ + []\n\ + []\n\ + []\n\ +\n"; + +int +main(int argc, char **argv) { struct sockaddr *s_ptr; struct sockaddr_in s_in4; @@ -391,46 +869,92 @@ char *interface = NULL; char *address = NULL; char *certfile = NULL; char *keyfile = NULL; +char *end = NULL; int argi = 1; -int host_af, port, s_len, rc, sock, save_errno; -int timeout = 1; -int tls_active = 0; -int sent_starttls = 0; +int host_af, port, s_len, rc, save_errno; +int timeout = 5; int tls_on_connect = 0; +long tmplong; #if HAVE_IPV6 struct sockaddr_in6 s_in6; #endif -#ifdef HAVE_OPENSSL -SSL_CTX* ctx; -SSL* ssl; -#endif +srv_ctx srv; -unsigned char outbuffer[10240]; unsigned char inbuffer[10240]; unsigned char *inptr = inbuffer; *inptr = 0; /* Buffer empty */ +srv.tls_active = 0; +srv.sent_starttls = 0; /* Options */ while (argc >= argi + 1 && argv[argi][0] == '-') { + if (strcmp(argv[argi], "-help") == 0 || + strcmp(argv[argi], "--help") == 0 || + strcmp(argv[argi], "-h") == 0) + { + puts(HELP_MESSAGE); + exit(0); + } if (strcmp(argv[argi], "-tls-on-connect") == 0) { tls_on_connect = 1; argi++; } +#ifdef HAVE_TLS + else if (strcmp(argv[argi], "-ocsp") == 0) + { + if (argc < ++argi + 1) + { + fprintf(stderr, "Missing required certificate file for ocsp option\n"); + exit(96); + } + ocsp_stapling = argv[argi++]; + } +# ifdef HAVE_GNUTLS + else if (strcmp(argv[argi], "-p") == 0) + { + if (argc < ++argi + 1) + { + fprintf(stderr, "Missing priority string\n"); + exit(96); + } + pri_string = argv[argi++]; + } +#endif + +#endif else if (argv[argi][1] == 't' && isdigit(argv[argi][2])) { - timeout = atoi(argv[argi]+1); + tmplong = strtol(argv[argi]+2, &end, 10); + if (end == argv[argi]+2 || *end) + { + fprintf(stderr, "Failed to parse seconds from option <%s>\n", + argv[argi]); + exit(95); + } + if (tmplong > 10000L) + { + fprintf(stderr, "Unreasonably long wait of %ld seconds requested\n", + tmplong); + exit(94); + } + if (tmplong < 0L) + { + fprintf(stderr, "Timeout must not be negative (%ld)\n", tmplong); + exit(93); + } + timeout = (int) tmplong; argi++; } else { - printf("Unrecognized option %s\n", argv[argi]); - exit(1); + fprintf(stderr, "Unrecognized option %s\n", argv[argi]); + exit(92); } } @@ -438,8 +962,8 @@ while (argc >= argi + 1 && argv[argi][0] == '-') if (argc < argi+1) { - printf("No IP address given\n"); - exit(1); + fprintf(stderr, "No IP address given\n"); + exit(91); } address = argv[argi++]; @@ -449,8 +973,8 @@ host_af = (strchr(address, ':') != NULL)? AF_INET6 : AF_INET; if (argc < argi+1) { - printf("No port number given\n"); - exit(1); + fprintf(stderr, "No port number given\n"); + exit(90); } port = atoi(argv[argi++]); @@ -488,11 +1012,11 @@ even on an IPv6 system. */ printf("Connecting to %s port %d ... ", address, port); -sock = socket(host_af, SOCK_STREAM, 0); -if (sock < 0) +srv.sock = socket(host_af, SOCK_STREAM, 0); +if (srv.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 @@ -517,7 +1041,7 @@ 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 @@ -534,11 +1058,11 @@ if (interface != NULL) /* Bind */ - if (bind(sock, s_ptr, s_len) < 0) + if (bind(srv.sock, s_ptr, s_len) < 0) { printf("Unable to bind outgoing SMTP call to %s: %s", interface, strerror(errno)); - exit(1); + exit(87); } } } @@ -554,7 +1078,7 @@ 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 @@ -573,7 +1097,7 @@ else signal(SIGALRM, sigalrm_handler_crash); alarm(timeout); -rc = connect(sock, s_ptr, s_len); +rc = connect(srv.sock, s_ptr, s_len); save_errno = errno; alarm(0); @@ -582,9 +1106,9 @@ 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); + close(srv.sock); + printf("connect failed: %s\n", strerror(save_errno)); + exit(85); } printf("connected\n"); @@ -596,36 +1120,35 @@ printf("connected\n"); SSL_library_init(); SSL_load_error_strings(); -ctx = SSL_CTX_new(SSLv23_method()); -if (ctx == NULL) +if (!(srv.ctx = SSL_CTX_new(SSLv23_method()))) { printf ("SSL_CTX_new failed\n"); - exit(1); + exit(84); } -if (certfile != NULL) +if (certfile) { - if (!SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM)) + if (!SSL_CTX_use_certificate_file(srv.ctx, certfile, SSL_FILETYPE_PEM)) { printf("SSL_CTX_use_certificate_file failed\n"); - exit(1); + exit(83); } printf("Certificate file = %s\n", certfile); } -if (keyfile != NULL) +if (keyfile) { - if (!SSL_CTX_use_PrivateKey_file(ctx, keyfile, SSL_FILETYPE_PEM)) + if (!SSL_CTX_use_PrivateKey_file(srv.ctx, keyfile, SSL_FILETYPE_PEM)) { printf("SSL_CTX_use_PrivateKey_file failed\n"); - exit(1); + exit(82); } printf("Key file = %s\n", keyfile); } -SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_BOTH); -SSL_CTX_set_timeout(ctx, 200); -SSL_CTX_set_info_callback(ctx, (void (*)())info_callback); +SSL_CTX_set_session_cache_mode(srv.ctx, SSL_SESS_CACHE_BOTH); +SSL_CTX_set_timeout(srv.ctx, 200); +SSL_CTX_set_info_callback(srv.ctx, (void (*)())info_callback); #endif @@ -636,7 +1159,11 @@ if (certfile != NULL) printf("Certificate file = %s\n", certfile); if (keyfile != NULL) printf("Key file = %s\n", keyfile); tls_init(certfile, keyfile); tls_session = tls_session_init(); -gnutls_transport_set_ptr(tls_session, (gnutls_transport_ptr)sock); +#ifdef HAVE_OCSP +if (ocsp_stapling) + gnutls_ocsp_status_request_enable_client(tls_session, NULL, 0, NULL); +#endif +gnutls_transport_set_ptr(tls_session, (gnutls_transport_ptr_t)(intptr_t)srv.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 @@ -657,240 +1184,43 @@ if (tls_on_connect) { printf("Attempting to start TLS\n"); - #ifdef HAVE_OPENSSL - tls_active = tls_start(sock, &ssl, ctx); - #endif +#ifdef HAVE_OPENSSL + srv.tls_active = tls_start(srv.sock, &srv.ssl, srv.ctx); +#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); + srv.tls_active = rc >= 0; alarm(0); - #endif - if (!tls_active) + if (!srv.tls_active) printf("%s\n", gnutls_strerror(rc)); + } +#endif + + if (!srv.tls_active) printf("Failed to start TLS\n"); +#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 else printf("Succeeded in starting TLS\n"); } #endif -while (fgets(outbuffer, sizeof(outbuffer), stdin) != NULL) - { - int n = (int)strlen(outbuffer); - while (n > 0 && isspace(outbuffer[n-1])) n--; - outbuffer[n] = 0; - - /* Expect incoming */ - - if (strncmp(outbuffer, "??? ", 4) == 0) - { - unsigned char *lineptr; - printf("%s\n", outbuffer); - - if (*inptr == 0) /* Refill input buffer */ - { - if (tls_active) - { - #ifdef HAVE_OPENSSL - rc = SSL_read (ssl, inbuffer, sizeof(inbuffer) - 1); - #endif - #ifdef HAVE_GNUTLS - rc = gnutls_record_recv(tls_session, CS inbuffer, sizeof(inbuffer) - 1); - #endif - } - else - { - alarm(timeout); - rc = read(sock, inbuffer, sizeof(inbuffer)); - alarm(0); - } - - if (rc < 0) - { - printf("Read error %s\n", strerror(errno)); - exit(1) ; - } - else if (rc == 0) - { - printf("Unexpected EOF read\n"); - close(sock); - exit(1); - } - else - { - inbuffer[rc] = 0; - inptr = inbuffer; - } - } - - lineptr = inptr; - while (*inptr != 0 && *inptr != '\r' && *inptr != '\n') inptr++; - if (*inptr != 0) - { - *inptr++ = 0; - if (*inptr == '\n') inptr++; - } - - printf("<<< %s\n", lineptr); - if (strncmp(lineptr, outbuffer + 4, (int)strlen(outbuffer) - 4) != 0) - { - printf("\n******** Input mismatch ********\n"); - exit(1); - } - - #ifdef HAVE_TLS - if (sent_starttls) - { - if (lineptr[0] == '2') - { - printf("Attempting to start TLS\n"); - fflush(stdout); - - #ifdef HAVE_OPENSSL - tls_active = tls_start(sock, &ssl, ctx); - #endif - - #ifdef HAVE_GNUTLS - sigalrm_seen = FALSE; - alarm(timeout); - tls_active = gnutls_handshake(tls_session) >= 0; - alarm(0); - #endif - - if (!tls_active) - { - printf("Failed to start TLS\n"); - fflush(stdout); - } - else - printf("Succeeded in starting TLS\n"); - } - else printf("Abandoning TLS start attempt\n"); - } - sent_starttls = 0; - #endif - } - - /* Wait for a bit before proceeding */ - - else if (strncmp(outbuffer, "+++ ", 4) == 0) - { - printf("%s\n", outbuffer); - sleep(atoi(outbuffer + 4)); - } - - /* Send outgoing, but barf if unconsumed incoming */ - - else - { - unsigned char *escape; - - if (*inptr != 0) - { - printf("Unconsumed input: %s", inptr); - printf(" About to send: %s\n", outbuffer); - exit(1); - } - - #ifdef HAVE_TLS - - /* Shutdown TLS */ - - if (strcmp(outbuffer, "stoptls") == 0 || - strcmp(outbuffer, "STOPTLS") == 0) - { - if (!tls_active) - { - printf("STOPTLS read when TLS not active\n"); - exit(1); - } - printf("Shutting down TLS encryption\n"); - - #ifdef HAVE_OPENSSL - SSL_shutdown(ssl); - SSL_free(ssl); - #endif - - #ifdef HAVE_GNUTLS - gnutls_bye(tls_session, GNUTLS_SHUT_WR); - gnutls_deinit(tls_session); - tls_session = NULL; - gnutls_global_deinit(); - #endif - - tls_active = 0; - continue; - } - - /* Remember that we sent STARTTLS */ - - sent_starttls = (strcmp(outbuffer, "starttls") == 0 || - strcmp(outbuffer, "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) - { - outbuffer[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) - { - *escape = '\r'; - memmove(escape + 1, escape + 2, (n + 2) - (escape - outbuffer) - 2); - n--; - } - - while ((escape = strstr(outbuffer, "\\n")) != NULL) - { - *escape = '\n'; - memmove(escape + 1, escape + 2, (n + 2) - (escape - outbuffer) - 2); - n--; - } - - /* OK, do it */ - - alarm(timeout); - if (tls_active) - { - #ifdef HAVE_OPENSSL - rc = SSL_write (ssl, outbuffer, n + 2); - #endif - #ifdef HAVE_GNUTLS - rc = gnutls_record_send(tls_session, CS outbuffer, n + 2); - if (rc < 0) - { - printf("GnuTLS write error: %s\n", gnutls_strerror(rc)); - exit(1); - } - #endif - } - else - { - rc = write(sock, outbuffer, n + 2); - } - alarm(0); - - if (rc < 0) - { - printf("Write error: %s\n", strerror(errno)); - exit(1); - } - } - } +do_file(&srv, stdin, timeout, inbuffer, sizeof(inbuffer), inptr); printf("End of script\n"); -close(sock); +shutdown(srv.sock, SHUT_WR); +while (read(srv.sock, inbuffer, sizeof(inbuffer)) > 0) ; +close(srv.sock); exit(0); }