/* 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 <openssl/crypto.h>
# include <openssl/ssl.h>
# include <openssl/err.h>
# include <openssl/rand.h>
-# include <openssl/ocsp.h>
+
+# 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 <openssl/ocsp.h>
+# endif
#endif
# define HAVE_OCSP
# include <gnutls/ocsp.h>
# endif
+# ifndef GNUTLS_NO_EXTENSIONS
+# define GNUTLS_NO_EXTENSIONS 0
+# endif
# define DH_BITS 768
}
+#ifndef DISABLE_OCSP
static int
tls_client_stapling_cb(SSL *s, void *arg)
{
X509_STORE_free(store);
return ret;
}
+#endif
/*************************************************
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;
fprintf(stderr, "GnuTLS connection error: %s:", prefix);
if (err != 0) fprintf(stderr, " %s", gnutls_strerror(err));
fprintf(stderr, "\n");
-exit(1);
+exit(98);
}
if (fd < 0)
{
fprintf(stderr, "Failed to open spool/gnutls-params: %s\n", strerror(errno));
- exit(1);
+ exit(97);
}
if (fstat(fd, &statbuf) < 0)
{
gnutls_session session;
-gnutls_init(&session, GNUTLS_CLIENT);
+gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_NO_EXTENSIONS);
gnutls_cipher_set_priority(session, default_cipher_priority);
gnutls_compression_set_priority(session, comp_priority);
*************************************************/
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\
<IP address>\n\
<port>\n\
[<outgoing interface>]\n\
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;
if (argc < ++argi + 1)
{
fprintf(stderr, "Missing required certificate file for ocsp option\n");
- exit(1);
+ exit(96);
}
ocsp_stapling = argv[argi++];
}
{
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 %ld seconds requested\n",
tmplong);
- exit(1);
+ exit(94);
}
if (tmplong < 0L)
{
fprintf(stderr, "Timeout must not be negative (%ld)\n", tmplong);
- exit(1);
+ exit(93);
}
timeout = (int) tmplong;
argi++;
else
{
fprintf(stderr, "Unrecognized option %s\n", argv[argi]);
- exit(1);
+ exit(92);
}
}
if (argc < argi+1)
{
fprintf(stderr, "No IP address given\n");
- exit(1);
+ exit(91);
}
address = argv[argi++];
if (argc < argi+1)
{
fprintf(stderr, "No port number given\n");
- exit(1);
+ exit(90);
}
port = atoi(argv[argi++]);
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
if (inet_pton(AF_INET6, interface, &s_in6.sin6_addr) != 1)
{
printf("Unable to parse \"%s\"", interface);
- exit(1);
+ exit(88);
}
}
else
{
printf("Unable to bind outgoing SMTP call to %s: %s",
interface, strerror(errno));
- exit(1);
+ exit(87);
}
}
}
if (inet_pton(host_af, address, &s_in6.sin6_addr) != 1)
{
printf("Unable to parse \"%s\"", address);
- exit(1);
+ exit(86);
}
}
else
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");
if (ctx == NULL)
{
printf ("SSL_CTX_new failed\n");
- exit(1);
+ exit(84);
}
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);
}
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);
}
}
#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);
+
+ /* Strip trailing newline */
+ if (outbuffer[n-1] == '\n') outbuffer[--n] = 0;
/* Expect incoming */
- if (strncmp(outbuffer, "??? ", 4) == 0)
+ if (strncmp(CS outbuffer, "??? ", 4) == 0)
{
unsigned char *lineptr;
printf("%s\n", outbuffer);
if (rc < 0)
{
printf("Read error %s\n", strerror(errno));
- exit(1) ;
+ exit(81) ;
}
else if (rc == 0)
{
printf("Unexpected EOF read\n");
close(sock);
- exit(1);
+ exit(80);
}
else
{
}
printf("<<< %s\n", lineptr);
- if (strncmp(lineptr, outbuffer + 4, (int)strlen(outbuffer) - 4) != 0)
+ if (strncmp(CS lineptr, CS outbuffer + 4, (int)strlen(CS outbuffer) - 4) != 0)
{
printf("\n******** Input mismatch ********\n");
- exit(1);
+ exit(79);
}
#ifdef HAVE_TLS
/* 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 */
{
printf("Unconsumed input: %s", inptr);
printf(" About to send: %s\n", outbuffer);
- exit(1);
+ exit(78);
}
#ifdef HAVE_TLS
/* Shutdown TLS */
- if (strcmp(outbuffer, "stoptls") == 0 ||
- strcmp(outbuffer, "STOPTLS") == 0)
+ if (strcmp(CS outbuffer, "stoptls") == 0 ||
+ strcmp(CS outbuffer, "STOPTLS") == 0)
{
if (!tls_active)
{
printf("STOPTLS read when TLS not active\n");
- exit(1);
+ exit(77);
}
printf("Shutting down TLS encryption\n");
/* Remember that we sent STARTTLS */
- sent_starttls = (strcmp(outbuffer, "starttls") == 0 ||
- strcmp(outbuffer, "STARTTLS") == 0);
+ sent_starttls = (strcmp(CS outbuffer, "starttls") == 0 ||
+ strcmp(CS 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)
+ if (strcmp(CS outbuffer, "starttls_wait") == 0)
{
outbuffer[8] = 0;
n = 8;
#endif
printf(">>> %s\n", outbuffer);
- strcpy(outbuffer + n, "\r\n");
+ strcpy(CS outbuffer + n, "\r\n");
/* Turn "\n" and "\r" into the relevant characters. This is a hack. */
- while ((escape = strstr(outbuffer, "\\r")) != NULL)
+ while ((escape = US strstr(CS outbuffer, "\\r")) != NULL)
{
*escape = '\r';
memmove(escape + 1, escape + 2, (n + 2) - (escape - outbuffer) - 2);
n--;
}
- while ((escape = strstr(outbuffer, "\\n")) != NULL)
+ while ((escape = US strstr(CS outbuffer, "\\n")) != NULL)
{
*escape = '\n';
memmove(escape + 1, escape + 2, (n + 2) - (escape - outbuffer) - 2);
if (rc < 0)
{
printf("GnuTLS write error: %s\n", gnutls_strerror(rc));
- exit(1);
+ exit(76);
}
#endif
}
if (rc < 0)
{
printf("Write error: %s\n", strerror(errno));
- exit(1);
+ exit(75);
}
}
}
projects / exim.git / blobdiff