Implement rename.

src/protocols/rdp/guac_rdpdr/rdpdr_fs.c

@@ -283,6 +283,7 @@ int guac_rdpdr_fs_open(guac_rdpdr_device* device, const char* path,
     file->dir = NULL;
     file->dir_pattern[0] = '\0';
     file->absolute_path = strdup(normalized_path);
+    file->real_path = strdup(real_path);
 
     GUAC_RDP_DEBUG(2, "Opened \"%s\" as file_id=%i", normalized_path, file_id);
 
@@ -325,14 +326,47 @@ int guac_rdpdr_fs_open(guac_rdpdr_device* device, const char* path,
 
 }
 
+int guac_rdpdr_fs_rename(guac_rdpdr_device* device, int file_id,
+        const char* new_path) {
+
+    char real_path[GUAC_RDPDR_FS_MAX_PATH];
+    char normalized_path[GUAC_RDPDR_FS_MAX_PATH];
+
+    guac_rdpdr_fs_file* file = guac_rdpdr_fs_get_file(device, file_id);
+    if (file == NULL) {
+        GUAC_RDP_DEBUG(1, "Rename of bad file_id: %i", file_id);
+        return GUAC_RDPDR_FS_EINVAL;
+    }
+
+    /* Normalize path, return no-such-file if invalid  */
+    if (guac_rdpdr_fs_normalize_path(new_path, normalized_path)) {
+        GUAC_RDP_DEBUG(1, "Normalization of path \"%s\" failed.", new_path);
+        return GUAC_RDPDR_FS_ENOENT;
+    }
+
+    /* Translate normalized path to real path */
+    __guac_rdpdr_fs_translate_path(device, normalized_path, real_path);
+
+    GUAC_RDP_DEBUG(2, "Renaming \"%s\" -> \"%s\"", file->real_path, real_path);
+
+    /* Perform rename */
+    if (rename(file->real_path, real_path)) {
+        GUAC_RDP_DEBUG(1, "rename() failed: \"%s\" -> \"%s\"",
+                file->real_path, real_path);
+        return guac_rdpdr_fs_get_errorcode(errno);
+    }
+
+    return 0;
+
+}
+
 void guac_rdpdr_fs_close(guac_rdpdr_device* device, int file_id) {
 
     guac_rdpdr_fs_data* data = (guac_rdpdr_fs_data*) device->data;
-    guac_rdpdr_fs_file* file;
 
-    /* Only close if file ID is valid */
-    if (file_id < 0 || file_id >= GUAC_RDPDR_FS_MAX_FILES) {
-        GUAC_RDP_DEBUG(2, "Ignoring close for out-of-range file_id: %i",
+    guac_rdpdr_fs_file* file = guac_rdpdr_fs_get_file(device, file_id);
+    if (file == NULL) {
+        GUAC_RDP_DEBUG(2, "Ignoring close for bad file_id: %i",
                 file_id);
         return;
     }
@@ -351,6 +385,7 @@ void guac_rdpdr_fs_close(guac_rdpdr_device* device, int file_id) {
 
     /* Free name */
     free(file->absolute_path);
+    free(file->real_path);
 
     /* Free ID back to pool */
     guac_pool_free_int(data->file_id_pool, file_id);

src/protocols/rdp/guac_rdpdr/rdpdr_fs.h

@@ -208,6 +208,11 @@ typedef struct guac_rdpdr_fs_file {
      */
     char* absolute_path;
 
+    /**
+     * The real path of this file on the local filesystem.
+     */
+    char* real_path;
+
     /**
      * Associated local file descriptor.
      */
@@ -309,6 +314,13 @@ int guac_rdpdr_fs_open(guac_rdpdr_device* device, const char* path,
         int access, int file_attributes, int create_disposition,
         int create_options);
 
+/**
+ * Renames (moves) the file with the given ID to the new path specified.
+ * Returns zero on success, or an error code if an error occurs.
+ */
+int guac_rdpdr_fs_rename(guac_rdpdr_device* device, int file_id,
+        const char* new_path);
+
 /**
  * Frees the given file ID, allowing future open operations to reuse it.
  */

src/protocols/rdp/guac_rdpdr/rdpdr_fs_messages_file_info.c

@@ -143,9 +143,33 @@ void guac_rdpdr_fs_process_query_attribute_tag_info(guac_rdpdr_device* device,
 
 void guac_rdpdr_fs_process_set_rename_info(guac_rdpdr_device* device,
         wStream* input_stream, int file_id, int completion_id, int length) {
-    /* STUB */
-    guac_client_log_error(device->rdpdr->client,
-            "Unimplemented stub: %s", __func__);
+
+    int result;
+    int filename_length;
+    wStream* output_stream;
+    char destination_path[GUAC_RDPDR_FS_MAX_PATH];
+
+    /* Read structure */
+    Stream_Seek_UINT8(input_stream); /* ReplaceIfExists */
+    Stream_Seek_UINT8(input_stream); /* RootDirectory */
+    Stream_Read_UINT32(input_stream, filename_length); /* FileNameLength */
+
+    /* Convert name to UTF-8 */
+    guac_rdp_utf16_to_utf8(Stream_Pointer(input_stream),
+            destination_path, filename_length/2);
+
+    /* Perform rename */
+    result = guac_rdpdr_fs_rename(device, file_id, destination_path);
+    if (result < 0)
+        output_stream = guac_rdpdr_new_io_completion(device,
+                completion_id, guac_rdpdr_fs_get_status(result), 4);
+    else
+        output_stream = guac_rdpdr_new_io_completion(device,
+                completion_id, STATUS_SUCCESS, 4);
+
+    Stream_Write_UINT32(output_stream, length);
+    svc_plugin_send((rdpSvcPlugin*) device->rdpdr, output_stream);
+
 }
 
 void guac_rdpdr_fs_process_set_allocation_info(guac_rdpdr_device* device,