upgraded to mongoose 5.4, introducing ipv6 support

CMakeLists.txt

@@ -7,6 +7,7 @@ set(CPACK_PACKAGE_VERSION_MINOR "2")
 set(CPACK_PACKAGE_VERSION_PATCH "2")
 
 option(WITH_MPD_HOST_CHANGE "Let users of the web frontend change the MPD Host" ON)
+option(WITH_IPV6 "enable IPv6 support" ON)
 
 find_package(LibMPDClient REQUIRED)
 find_package(Threads REQUIRED)
@@ -18,6 +19,9 @@ include(CheckCSourceCompiles)
 
 set(CMAKE_C_FLAGS "-std=gnu99 -Wall") 
 set(CMAKE_C_FLAGS_DEBUG "-ggdb -pedantic")
+if(WITH_IPV6)
+	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS NS_ENABLE_IPV6)
+endif()
 
 file(GLOB RESOURCES 
 	RELATIVE ${PROJECT_SOURCE_DIR}

src/http_server.c

@@ -34,10 +34,10 @@ int callback_http(struct mg_connection *c)
         mg_send_header(c, "Content-Type", req_file->mimetype);
         mg_send_data(c, req_file->data, req_file->size);
     
-        return MG_REQUEST_PROCESSED;
+        return MG_TRUE;
     }
 
     mg_send_status(c, 404);
     mg_printf_data(c, "Not Found");
-    return MG_REQUEST_PROCESSED;
+    return MG_TRUE;
 }

src/mongoose.h

@@ -20,7 +20,7 @@
 #ifndef MONGOOSE_HEADER_INCLUDED
 #define  MONGOOSE_HEADER_INCLUDED
 
-#define MONGOOSE_VERSION "5.3"
+#define MONGOOSE_VERSION "5.4"
 
 #include <stdio.h>      // required for FILE
 #include <stddef.h>     // required for size_t
@@ -37,7 +37,7 @@ struct mg_connection {
   const char *query_string;   // URL part after '?', not including '?', or NULL
 
   char remote_ip[48];         // Max IPv6 string length is 45 characters
-  const char *local_ip;       // Local IP address
+  char local_ip[48];          // Local IP address
   unsigned short remote_port; // Client's port
   unsigned short local_port;  // Local port number
 
@@ -48,46 +48,70 @@ struct mg_connection {
   } http_headers[30];
 
   char *content;              // POST (or websocket message) data, or NULL
-  size_t content_len;       // content length
+  size_t content_len;         // Data length
 
   int is_websocket;           // Connection is a websocket connection
   int status_code;            // HTTP status code for HTTP error handler
   int wsbits;                 // First byte of the websocket frame
   void *server_param;         // Parameter passed to mg_add_uri_handler()
   void *connection_param;     // Placeholder for connection-specific data
-  void *callback_param;       // Used by mg_iterate_over_connections()
+  void *callback_param;       // Needed by mg_iterate_over_connections()
 };
 
 struct mg_server; // Opaque structure describing server instance
-typedef int (*mg_handler_t)(struct mg_connection *);
+enum mg_result { MG_FALSE, MG_TRUE, MG_MORE };
+enum mg_event {
+  MG_POLL = 100,  // Callback return value is ignored
+  MG_CONNECT,     // If callback returns MG_FALSE, connect fails
+  MG_AUTH,        // If callback returns MG_FALSE, authentication fails
+  MG_REQUEST,     // If callback returns MG_FALSE, Mongoose continues with req
+  MG_REPLY,       // If callback returns MG_FALSE, Mongoose closes connection
+  MG_CLOSE,       // Connection is closed, callback return value is ignored
+  MG_WS_HANDSHAKE,  // New websocket connection, handshake request
+  MG_WS_CONNECT,  // New websocket connection established
+  MG_HTTP_ERROR   // If callback returns MG_FALSE, Mongoose continues with err
+};
+typedef int (*mg_handler_t)(struct mg_connection *, enum mg_event);
+
+// Websocket opcodes, from http://tools.ietf.org/html/rfc6455
+enum {
+  WEBSOCKET_OPCODE_CONTINUATION = 0x0,
+  WEBSOCKET_OPCODE_TEXT = 0x1,
+  WEBSOCKET_OPCODE_BINARY = 0x2,
+  WEBSOCKET_OPCODE_CONNECTION_CLOSE = 0x8,
+  WEBSOCKET_OPCODE_PING = 0x9,
+  WEBSOCKET_OPCODE_PONG = 0xa
+};
 
 // Server management functions
-struct mg_server *mg_create_server(void *server_param);
+struct mg_server *mg_create_server(void *server_param, mg_handler_t handler);
 void mg_destroy_server(struct mg_server **);
 const char *mg_set_option(struct mg_server *, const char *opt, const char *val);
-unsigned int mg_poll_server(struct mg_server *, int milliseconds);
+int mg_poll_server(struct mg_server *, int milliseconds);
-void mg_set_request_handler(struct mg_server *, mg_handler_t);
-void mg_set_http_close_handler(struct mg_server *, mg_handler_t);
-void mg_set_http_error_handler(struct mg_server *, mg_handler_t);
-void mg_set_auth_handler(struct mg_server *, mg_handler_t);
 const char **mg_get_valid_option_names(void);
 const char *mg_get_option(const struct mg_server *server, const char *name);
 void mg_set_listening_socket(struct mg_server *, int sock);
 int mg_get_listening_socket(struct mg_server *);
 void mg_iterate_over_connections(struct mg_server *, mg_handler_t, void *);
+struct mg_connection *mg_next(struct mg_server *, struct mg_connection *);
+void mg_wakeup_server(struct mg_server *);
+void mg_wakeup_server_ex(struct mg_server *, mg_handler_t, const char *, ...);
+struct mg_connection *mg_connect(struct mg_server *, const char *, int, int);
 
 // Connection management functions
 void mg_send_status(struct mg_connection *, int status_code);
 void mg_send_header(struct mg_connection *, const char *name, const char *val);
-void mg_send_data(struct mg_connection *, const void *data, int data_len);
+size_t mg_send_data(struct mg_connection *, const void *data, int data_len);
-void mg_printf_data(struct mg_connection *, const char *format, ...);
+size_t mg_printf_data(struct mg_connection *, const char *format, ...);
+size_t mg_write(struct mg_connection *, const void *buf, int len);
+size_t mg_printf(struct mg_connection *conn, const char *fmt, ...);
 
-int mg_websocket_write(struct mg_connection *, int opcode,
+size_t mg_websocket_write(struct mg_connection *, int opcode,
-                       const char *data, size_t data_len);
+                          const char *data, size_t data_len);
+size_t mg_websocket_printf(struct mg_connection* conn, int opcode,
+                           const char *fmt, ...);
 
-// Deprecated in favor of mg_send_* interface
+void mg_send_file(struct mg_connection *, const char *path);
-int mg_write(struct mg_connection *, const void *buf, int len);
-int mg_printf(struct mg_connection *conn, const char *fmt, ...);
 
 const char *mg_get_header(const struct mg_connection *, const char *name);
 const char *mg_get_mime_type(const char *name, const char *default_mime_type);
@@ -103,20 +127,18 @@ int mg_parse_multipart(const char *buf, int buf_len,
 void *mg_start_thread(void *(*func)(void *), void *param);
 char *mg_md5(char buf[33], ...);
 int mg_authorize_digest(struct mg_connection *c, FILE *fp);
+int mg_url_encode(const char *src, size_t s_len, char *dst, size_t dst_len);
+int mg_url_decode(const char *src, int src_len, char *dst, int dst_len, int);
+int mg_terminate_ssl(struct mg_connection *c, const char *cert);
 
-// Callback function return codes
+// Templates support
-enum { MG_REQUEST_NOT_PROCESSED, MG_REQUEST_PROCESSED, MG_REQUEST_CALL_AGAIN };
+struct mg_expansion {
-enum { MG_AUTH_FAIL, MG_AUTH_OK };
+  const char *keyword;
-enum { MG_ERROR_NOT_PROCESSED, MG_ERROR_PROCESSED };
+  void (*handler)(struct mg_connection *);
-enum { MG_CLIENT_CONTINUE, MG_CLIENT_CLOSE };
-
-// HTTP client events
-enum {
-  MG_CONNECT_SUCCESS, MG_CONNECT_FAILURE,
-  MG_DOWNLOAD_SUCCESS, MG_DOWNLOAD_FAILURE
 };
-int mg_connect(struct mg_server *, const char *host, int port, int use_ssl,
+void mg_template(struct mg_connection *, const char *text,
-               mg_handler_t handler, void *param);
+                 struct mg_expansion *expansions);
+
 
 #ifdef __cplusplus
 }

src/mpd_client.c

@@ -49,11 +49,11 @@ int callback_mpd(struct mg_connection *c)
     char *p_charbuf = NULL;
 
     if(cmd_id == -1)
-        return MG_CLIENT_CONTINUE;
+        return MG_TRUE;
 
     if(mpd.conn_state != MPD_CONNECTED && cmd_id != MPD_API_SET_MPDHOST &&
         cmd_id != MPD_API_GET_MPDHOST && cmd_id != MPD_API_SET_MPDPASS)
-        return MG_CLIENT_CONTINUE;
+        return MG_TRUE;
 
     mpd_connection_set_timeout(mpd.conn, 10000);
     switch(cmd_id)
@@ -163,7 +163,7 @@ int callback_mpd(struct mg_connection *c)
                 free(p_charbuf);
                 mpd.port = int_buf;
                 mpd.conn_state = MPD_RECONNECT;
-                return MG_CLIENT_CONTINUE;
+                return MG_TRUE;
             }
             break;
         case MPD_API_GET_MPDHOST:
@@ -179,7 +179,7 @@ int callback_mpd(struct mg_connection *c)
 
                 mpd.password = p_charbuf;
                 mpd.conn_state = MPD_RECONNECT;
-                return MG_CLIENT_CONTINUE;
+                return MG_TRUE;
             }
             break;
 #endif
@@ -198,7 +198,7 @@ int callback_mpd(struct mg_connection *c)
     if(n > 0)
         mg_websocket_write(c, 1, mpd.buf, n);
 
-    return MG_CLIENT_CONTINUE;
+    return MG_TRUE;
 }
 
 int mpd_close_handler(struct mg_connection *c)
@@ -209,11 +209,11 @@ int mpd_close_handler(struct mg_connection *c)
     return 0;
 }
 
-static int mpd_notify_callback(struct mg_connection *c) {
+static int mpd_notify_callback(struct mg_connection *c, enum mg_event ev) {
     size_t n;
 
     if(!c->is_websocket)
-        return MG_REQUEST_PROCESSED;
+        return MG_TRUE;
 
     if(c->callback_param)
     {
@@ -222,7 +222,7 @@ static int mpd_notify_callback(struct mg_connection *c) {
             (const char *)c->callback_param);
 
         mg_websocket_write(c, 1, mpd.buf, n);
-        return MG_REQUEST_PROCESSED;
+        return MG_TRUE;
     }
 
     if(!c->connection_param)
@@ -253,7 +253,7 @@ static int mpd_notify_callback(struct mg_connection *c) {
         }
     }
 
-    return MG_REQUEST_PROCESSED;
+    return MG_TRUE;
 }
 
 void mpd_poll(struct mg_server *s)

src/ympd.c

@@ -38,28 +38,37 @@ void bye()
     force_exit = 1;
 }
 
-static int server_callback(struct mg_connection *c) {
+static int server_callback(struct mg_connection *c, enum mg_event ev) {
-    if (c->is_websocket)
+    switch(ev) {
-    {
+        case MG_CLOSE:
-        c->content[c->content_len] = '\0';
+            mpd_close_handler(c);
-        if(c->content_len)
+            return MG_TRUE;
-            return callback_mpd(c);
+        case MG_REQUEST:
-        else
+            if (c->is_websocket) {
-            return MG_CLIENT_CONTINUE;
+                c->content[c->content_len] = '\0';
+                if(c->content_len)
+                    return callback_mpd(c);
+                else
+                    return MG_TRUE;
+            } else
+                return callback_http(c);
+        case MG_AUTH:
+            return MG_TRUE;
+        default:
+            return MG_FALSE;
     }
-    else
-        return callback_http(c);
 }
 
 int main(int argc, char **argv)
 {
     int n, option_index = 0;
-    struct mg_server *server = mg_create_server(NULL);
+    struct mg_server *server = mg_create_server(NULL, server_callback);
     unsigned int current_timer = 0, last_timer = 0;
     char *run_as_user = NULL;
+    char const *error_msg = NULL;
 
     atexit(bye);
-    mg_set_option(server, "listening_port", "8080");
+    error_msg = mg_set_option(server, "listening_port", "8080");
     mpd.port = 6600;
     strcpy(mpd.host, "127.0.0.1");
 
@@ -82,7 +91,7 @@ int main(int argc, char **argv)
             case 'p':
                 mpd.port = atoi(optarg);
             case 'w':
-                mg_set_option(server, "listening_port", optarg);
+                error_msg = mg_set_option(server, "listening_port", optarg);
                 break;
             case 'u':
                 run_as_user = strdup(optarg);
@@ -105,19 +114,29 @@ int main(int argc, char **argv)
                         , argv[0]);
                 return EXIT_FAILURE;
         }
+
+        if(error_msg)
+        {
+            fprintf(stderr, "Mongoose error: %s\n", error_msg);
+            return EXIT_FAILURE;
+        }
     }
 
     /* drop privilges at last to ensure proper port binding */
     if(run_as_user != NULL)
     {
-        mg_set_option(server, "run_as_user", run_as_user);
+        error_msg = mg_set_option(server, "run_as_user", run_as_user);
         free(run_as_user);
+        if(error_msg)
+        {
+            fprintf(stderr, "Mongoose error: %s\n", error_msg);
+            return EXIT_FAILURE;
+        }
     }
 
-    mg_set_http_close_handler(server, mpd_close_handler);
-    mg_set_request_handler(server, server_callback);
     while (!force_exit) {
-        current_timer = mg_poll_server(server, 200);
+        mg_poll_server(server, 200);
+        current_timer = time(NULL);
         if(current_timer - last_timer)
         {
             last_timer = current_timer;