Docs: prettify code examples. Bug 1284

[users/heiko/exim.git] / test / src / client.c

diff --git a/test/src/client.c b/test/src/client.c
index 5b52916ee40a1b0617a07fcf3e0a883661cb9ecc..2bd6402059e889fb3a79e3f446073435ff52602e 100644 (file)
--- a/test/src/client.c
+++ b/test/src/client.c
@@ -66,7 +66,8 @@ latter needs a whole pile of tables. */
 # include <openssl/ssl.h>
 # include <openssl/err.h>
 # include <openssl/rand.h>
-# if !defined(EXIM_HAVE_OPENSSL_TLSEXT) && !defined(DISABLE_OCSP)
+
+# 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
@@ -84,20 +85,24 @@ latter needs a whole pile of tables. */
 #  define HAVE_OCSP
 #  include <gnutls/ocsp.h>
 # 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] = {
@@ -119,7 +124,7 @@ 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*/
 
@@ -255,12 +260,12 @@ int
 tls_start(int sock, SSL **ssl, SSL_CTX *ctx)
 {
 int rc;
-static const unsigned 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);
 
@@ -352,7 +357,7 @@ init_dh(void)
 {
 int fd;
 int ret;
-gnutls_datum m;
+gnutls_datum_t m;
 uschar filename[200];
 struct stat statbuf;
 
@@ -445,13 +450,14 @@ 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);
@@ -459,6 +465,10 @@ 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);
@@ -479,7 +489,14 @@ 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\
           <IP address>\n\
           <port>\n\
           [<outgoing interface>]\n\
@@ -783,7 +800,7 @@ 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
@@ -804,24 +821,32 @@ 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");
   }
@@ -830,8 +855,9 @@ if (tls_on_connect)
 while (fgets(CS outbuffer, sizeof(outbuffer), stdin) != NULL)
   {
   int n = (int)strlen(CS outbuffer);
-  while (n > 0 && isspace(outbuffer[n-1])) n--;
-  outbuffer[n] = 0;
+
+  /* Strip trailing newline */
+  if (outbuffer[n-1] == '\n') outbuffer[--n] = 0;
 
   /* Expect incoming */
 
@@ -907,10 +933,18 @@ 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)