X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/348051adc5ea922f4e82d971d44f03e87557b6ec..be839a2609381f535f263ed0c459a4ebf3fd5d1d:/test/src/client.c diff --git a/test/src/client.c b/test/src/client.c index e7210f223..9beaf25bb 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 @@ -35,6 +36,9 @@ ripped from the openssl ocsp and s_client utilities. */ #include #include +/* Set to TRUE to enable debug output */ +#define DEBUG if (FALSE) + #ifdef AF_INET6 #define HAVE_IPV6 1 #endif @@ -58,7 +62,6 @@ 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 +70,14 @@ 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 +89,24 @@ 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 +128,7 @@ 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*/ @@ -122,6 +136,7 @@ static const int cert_type_priority[16] = { GNUTLS_CRT_X509, 0 }; #ifdef HAVE_TLS char * ocsp_stapling = NULL; +char * pri_string = NULL; #endif @@ -155,36 +170,30 @@ sigalrm_seen = 1; /****************************************************************************/ #ifdef HAVE_OPENSSL +# ifndef DISABLE_OCSP -X509_STORE * -setup_verify(BIO *bp, char *CAfile, char *CApath) +static STACK_OF(X509) * +chain_from_pem_file(const uschar * file) { - 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; +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); } @@ -195,8 +204,7 @@ 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 +226,19 @@ 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((const uschar *)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 +247,10 @@ 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 +261,23 @@ 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; @@ -282,7 +297,7 @@ if (rc <= 0) return 0; } -printf("SSL connection using %s\n", SSL_get_cipher (*ssl)); +/* printf("SSL connection using %s\n", SSL_get_cipher (*ssl)); */ return 1; } @@ -326,7 +341,7 @@ 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 +358,7 @@ init_dh(void) { int fd; int ret; -gnutls_datum m; +gnutls_datum_t m; uschar filename[200]; struct stat statbuf; @@ -359,7 +374,7 @@ 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) @@ -417,7 +432,7 @@ if (certificate != NULL) { rc = gnutls_certificate_set_x509_key_file(x509_cred, CS certificate, CS privatekey, GNUTLS_X509_FMT_PEM); - if (rc < 0) gnutls_error("gnutls_certificate", rc); + if (rc < 0) gnutls_error(US"gnutls_certificate", rc); } /* Associate the parameters with the x509 credentials structure. */ @@ -436,13 +451,14 @@ 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 +466,19 @@ 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); @@ -460,7 +489,456 @@ 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] == '*' || outbuffer[3] == '?') + ) + { + unsigned char *lineptr; + unsigned exp_eof = outbuffer[3] == '*'; + unsigned resp_optional = outbuffer[3] == '?'; + + printf("%s\n", outbuffer); + n = unescape_buf(outbuffer, n); + +nextinput: + if (*inptr == 0) /* Refill input buffer */ + { + unsigned char *inbufferp = inbuffer; + + alarm(timeout); + for (;;) + { + if (srv->tls_active) + { +#ifdef HAVE_OPENSSL + int error; + DEBUG { printf("call SSL_read\n"); fflush(stdout); } + rc = SSL_read(srv->ssl, inbufferp, bsiz - (inbufferp - inbuffer) - 1); + DEBUG { printf("SSL_read: %d\n", rc); fflush(stdout); } + if (rc <= 0) + switch (error = SSL_get_error(srv->ssl, rc)) + { + case SSL_ERROR_ZERO_RETURN: + break; + case SSL_ERROR_SYSCALL: + printf("%s\n", ERR_error_string(ERR_get_error(), NULL)); + rc = -1; + break; + case SSL_ERROR_SSL: + printf("%s\nTLS terminated\n", ERR_error_string(ERR_get_error(), NULL)); + SSL_shutdown(srv->ssl); + SSL_free(srv->ssl); + srv->tls_active = FALSE; + { /* OpenSSL leaves it in restartsys mode */ + struct sigaction act = {.sa_handler = sigalrm_handler_flag, .sa_flags = 0}; + sigalrm_seen = 1; + sigaction(SIGALRM, &act, NULL); + } + *inptr = 0; + DEBUG { printf("go round\n"); fflush(stdout); } + goto nextinput; + default: + printf("SSL error code %d\n", error); + } +#endif +#ifdef HAVE_GNUTLS + retry1: + DEBUG { printf("call gnutls_record_recv\n"); fflush(stdout); } + rc = gnutls_record_recv(tls_session, CS inbufferp, bsiz - (inbufferp - inbuffer) - 1); + if (rc < 0) + { + DEBUG { printf("gnutls_record_recv: %s\n", gnutls_strerror(rc)); fflush(stdout); } + if (rc == GNUTLS_E_INTERRUPTED || rc == GNUTLS_E_AGAIN) + goto retry1; + printf("%s\n", gnutls_strerror(rc)); + srv->tls_active = FALSE; + *inptr = 0; + DEBUG { printf("go round\n"); fflush(stdout); } + goto nextinput; + } + DEBUG { printf("gnutls_record_recv: %d\n", rc); fflush(stdout); } +#endif + } + else + { + DEBUG { printf("call read\n"); fflush(stdout); } + rc = read(srv->sock, inbufferp, bsiz - (inbufferp - inbuffer) - 1); + DEBUG { printf("read: %d\n", rc); fflush(stdout); } + } + + if (rc > 0) inbufferp[rc] = '\0'; + if (rc <= 0 || strchr(inbufferp, '\n')) break; + inbufferp += rc; + if (inbufferp >= inbuffer + bsiz) + { + printf("Input buffer overrun, need more than %d bytes input buffer\n", bsiz); + exit(73); + } + DEBUG { printf("read more\n"); } + } + alarm(0); + + if (rc < 0) + { + if (errno == EINTR && sigalrm_seen && resp_optional) + continue; /* next scriptline */ + printf("Read error: %s\n", strerror(errno)); + exit(81); + } + else if (rc == 0) + if (exp_eof) + { + printf("Expected EOF read\n"); + continue; + } + else if (resp_optional) + continue; /* next scriptline */ + 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 + inptr = inbuffer; + } + DEBUG { printf("read: '%s'\n", inptr); fflush(stdout); } + + lineptr = inptr; + while (*inptr != 0 && *inptr != '\r' && *inptr != '\n') inptr++; + if (*inptr != 0) + { + *inptr++ = 0; + if (*inptr == '\n') inptr++; + } + + if (strncmp(CS lineptr, CS outbuffer + 4, n - 4) != 0) + if (resp_optional) + { + inptr = lineptr; /* consume scriptline, not inputline */ + continue; + } + else + { + printf("<<< %s\n", lineptr); + printf("\n******** Input mismatch ********\n"); + exit(79); + } + + /* Input matched script. Output the inputline, unless optional */ + DEBUG { printf("read matched\n"); fflush(stdout); } + + if (!resp_optional) + printf("<<< %s\n", lineptr); + else + + /* If there is further input after this line, consume inputline but not + scriptline in case there are several matching. Nonmatches are dealt with + above. */ + + if (*inptr != 0) + goto nextinput; + + #ifdef HAVE_TLS + if (srv->sent_starttls) + { + if (lineptr[0] == '2') + { + 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; + fd_set rfd; + struct timeval tv = { 0, 2000 }; + + 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)); + + /* look for an error on the TLS conn */ + FD_ZERO(&rfd); + FD_SET(srv->sock, &rfd); + if (select(srv->sock+1, &rfd, NULL, NULL, &tv) > 0) + { + retry2: + DEBUG { printf("call gnutls_record_recv\n"); fflush(stdout); } + rc = gnutls_record_recv(tls_session, CS inbuffer, bsiz - 1); + if (rc < 0) + { + DEBUG { printf("gnutls_record_recv: %s\n", gnutls_strerror(rc)); fflush(stdout); } + if (rc == GNUTLS_E_INTERRUPTED || rc == GNUTLS_E_AGAIN) + goto retry2; + printf("%s\n", gnutls_strerror(rc)); + srv->tls_active = FALSE; + } + DEBUG { printf("gnutls_record_recv: %d\n", rc); fflush(stdout); } + } + } + #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((const char *)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); + } + } + } +} @@ -470,7 +948,18 @@ return session; *************************************************/ const char * const HELP_MESSAGE = "\n\ -Usage: client\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\ @@ -478,7 +967,8 @@ 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; @@ -488,10 +978,8 @@ 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; @@ -499,16 +987,14 @@ long tmplong; 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 inbuffer[100 * 1024]; unsigned char *inptr = inbuffer; *inptr = 0; /* Buffer empty */ +srv.tls_active = 0; +srv.sent_starttls = 0; /* Options */ @@ -518,7 +1004,7 @@ 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) @@ -532,10 +1018,21 @@ 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++]; } +# 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])) @@ -545,18 +1042,18 @@ 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 +1061,7 @@ while (argc >= argi + 1 && argv[argi][0] == '-') else { fprintf(stderr, "Unrecognized option %s\n", argv[argi]); - exit(1); + exit(92); } } @@ -573,7 +1070,7 @@ 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 +1081,7 @@ 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++]); @@ -622,11 +1119,11 @@ 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 @@ -651,7 +1148,7 @@ 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 @@ -668,11 +1165,11 @@ 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); } } } @@ -682,14 +1179,30 @@ if (interface != NULL) #if HAVE_IPV6 if (host_af == AF_INET6) { +# ifdef HAVE_GETADDRINFO + struct addrinfo hints, *res; + memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_INET6; + hints.ai_socktype = SOCK_STREAM; + hints.ai_flags = AI_NUMERICHOST; + if ((rc = getaddrinfo(address, NULL, &hints, &res)) != 0 || res == NULL) + { + printf("unable to parse \"%s\" as an IP address: %s\n", address, + rc == 0 ? "NULL result returned" : gai_strerror(rc)); + exit(86); + } + memcpy(&s_in6, res->ai_addr, res->ai_addrlen); + freeaddrinfo(res); +# else memset(&s_in6, 0, sizeof(s_in6)); s_in6.sin6_family = AF_INET6; - s_in6.sin6_port = htons(port); if (inet_pton(host_af, address, &s_in6.sin6_addr) != 1) { printf("Unable to parse \"%s\"", address); - exit(1); + exit(86); } +# endif + s_in6.sin6_port = htons(port); } else #endif @@ -707,7 +1220,7 @@ 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); @@ -716,11 +1229,18 @@ 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); } +#ifdef TCP_QUICKACK + { + int off = 0; + (void) setsockopt(srv.sock, IPPROTO_TCP, TCP_QUICKACK, US &off, sizeof(off)); + } +#endif + printf("connected\n"); @@ -730,36 +1250,35 @@ 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 @@ -768,13 +1287,13 @@ SSL_CTX_set_info_callback(ctx, (void (*)())info_callback); #ifdef HAVE_GNUTLS if (certfile != NULL) printf("Certificate file = %s\n", certfile); if (keyfile != NULL) printf("Key file = %s\n", keyfile); -tls_init(certfile, keyfile); +tls_init(US certfile, US keyfile); tls_session = tls_session_init(); #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)sock); +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 @@ -795,286 +1314,44 @@ 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) +#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) - { - 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') - { -int rc; - unsigned int verify; - - 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); - } - #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"); - } - 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); +if (fcntl(srv.sock, F_SETFL, O_NONBLOCK) == 0) + while (read(srv.sock, inbuffer, sizeof(inbuffer)) > 0) ; +close(srv.sock); exit(0); }