Fix log level for proxy authentication failure.

[tlsproxy/tlsproxy.git] / src / connection.c

diff --git a/src/connection.c b/src/connection.c
index 28f2e699f1d68ae2a41e7d3a36c4cf0f3adb03c1..507a18d1c54ad000578f1f5c06344a5336b57b70 100644 (file)
--- a/src/connection.c
+++ b/src/connection.c
@@ -59,7 +59,7 @@ static int initialize_tls_session_client(int peer_socket,
 static int initialize_tls_session_server(int peer_socket,
         gnutls_session_t *session,
         gnutls_certificate_credentials_t *x509_cred);
-static int initialize_tls_session_both(int flags,
+static int initialize_tls_session_both(unsigned int flags,
         int peer_socket,
         gnutls_session_t *session,
         gnutls_certificate_credentials_t *x509_cred);
@@ -138,18 +138,18 @@ void handle_connection(int client_socket) {
         send_bad_request(client_fd_write);
         goto out;
     } else if (result == -3) {
-        LOG(DEBUG1, "read_http_request(): proxy authentication failed");
+        LOG(WARNING, "read_http_request(): proxy authentication failed");
         send_authentication_required(client_fd_write);
         goto out;
     }
 
     if (parse_request(buffer, host, port, &version_minor) != 0) {
-        LOG(WARNING, "bad request: %s", buffer);
+        LOG(WARNING, "bad request: >%s<", buffer);
         send_bad_request(client_fd_write);
         goto out;
     }
 
-    LOG(DEBUG1, "target: %s:%s (HTTP 1.%d)", host, port, version_minor);
+    LOG(DEBUG2, "target: %s:%s (HTTP 1.%d)", host, port, version_minor);
 
     /* Connect to proxy server or directly to server. */
     if (global_proxy_host != NULL && global_proxy_port != NULL) {
@@ -406,6 +406,11 @@ static int initialize_tls_session_client(int peer_socket,
                 PROXY_CA_PATH);
             gnutls_certificate_free_credentials(*x509_cred);
             return -1;
+        } else if (result != 1) {
+            /* Must contain only one CA, our proxy CA. */
+            LOG(ERROR, "initialize_tls_session_client(): multiple CAs found");
+            gnutls_certificate_free_credentials(*x509_cred);
+            return -1;
         }
     }
     /* If the invalid hostname was specified do nothing, we use a self-signed
@@ -457,28 +462,27 @@ static int initialize_tls_session_server(int peer_socket,
     return initialize_tls_session_both(GNUTLS_CLIENT,
                                        peer_socket, session, x509_cred);
 }
-static int initialize_tls_session_both(int flags,
+static int initialize_tls_session_both(unsigned int flags,
         int peer_socket,
         gnutls_session_t *session,
         gnutls_certificate_credentials_t *x509_cred) {
     int result;
 
+    *session = NULL;
+
     result = gnutls_init(session, flags);
     if (result != GNUTLS_E_SUCCESS) {
         LOG(ERROR,
             "initialize_tls_session_both(): gnutls_init(): %s",
             gnutls_strerror(result));
-        gnutls_certificate_free_credentials(*x509_cred);
-        return -1;
+        goto err;
     }
     result = gnutls_priority_set(*session, global_tls_priority_cache);
     if (result != GNUTLS_E_SUCCESS) {
         LOG(ERROR,
             "initialize_tls_session_both(): gnutls_priority_set(): %s",
             gnutls_strerror(result));
-        gnutls_deinit(*session);
-        gnutls_certificate_free_credentials(*x509_cred);
-        return -1;
+        goto err;
     }
     result = gnutls_credentials_set(*session,
                                     GNUTLS_CRD_CERTIFICATE, *x509_cred);
@@ -486,14 +490,24 @@ static int initialize_tls_session_both(int flags,
         LOG(ERROR,
             "initialize_tls_session_both(): gnutls_credentials_set(): %s",
             gnutls_strerror(result));
-        gnutls_deinit(*session);
-        gnutls_certificate_free_credentials(*x509_cred);
-        return -1;
+        goto err;
     }
 
+#ifdef HAVE_GNUTLS_TRANSPORT_SET_INT2
+    /* gnutls_transport_set_int() is a macro. */
+    gnutls_transport_set_int(*session, peer_socket);
+#else
     gnutls_transport_set_ptr(*session, (gnutls_transport_ptr_t)peer_socket);
+#endif
 
     return 0;
+
+err:
+    if (*session) {
+        gnutls_deinit(*session);
+    }
+    gnutls_certificate_free_credentials(*x509_cred);
+    return -1;
 }
 
 
@@ -537,14 +551,14 @@ static int read_http_request(FILE *client_fd, char *request, size_t length) {
     while (fgets(buffer, sizeof(buffer), client_fd) != NULL) {
         const char *authentication = "Proxy-Authorization: Basic ";
 
-        if (http_digest_authorization != NULL
+        if (global_http_digest_authorization != NULL
                 && !strncmp(buffer, authentication, strlen(authentication))) {
             found_proxy_authorization = 1;
 
             /* Check if the passphrase matches. */
             strtok(buffer, "\r\n");
             if (strcmp(buffer + strlen(authentication),
-                       http_digest_authorization)) {
+                       global_http_digest_authorization)) {
                 return -3;
             }
         }
@@ -557,9 +571,11 @@ static int read_http_request(FILE *client_fd, char *request, size_t length) {
     if (ferror(client_fd)) {
         LOG_PERROR(WARNING, "read_http_request(): fgets()");
         return -1;
+    } else if (feof(client_fd)) {
+        return -2;
     }
 
-    if (http_digest_authorization != NULL && !found_proxy_authorization) {
+    if (global_http_digest_authorization != NULL && !found_proxy_authorization) {
         return -3;
     }
 
@@ -612,7 +628,7 @@ static void transfer_data(int client, int server) {
     fds[1].events  = POLLIN | POLLPRI | POLLHUP | POLLERR;
     fds[1].revents = 0;
 
-    LOG(DEBUG1, "transfer_data(): %d -> %d", client, server);
+    LOG(DEBUG2, "transfer_data(): %d -> %d", client, server);
 
     for (;;) {
         int result = poll(fds, 2 /* fd count */, -1 /* no timeout */);
@@ -697,7 +713,7 @@ static void transfer_data_tls(int client, int server,
     if (gnutls_record_get_max_size(server_session) < buffer_size) {
         buffer_size = gnutls_record_get_max_size(server_session);
     }
-    LOG(DEBUG1, "transfer_data_tls(): suggested buffer size: %ld",
+    LOG(DEBUG2, "transfer_data_tls(): suggested buffer size: %ld",
                 (long int)buffer_size);
 
     for (;;) {