| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include "fs.h" |
| #include "rdp.h" |
| #include "upload.h" |
| |
| #include <guacamole/client.h> |
| #include <guacamole/object.h> |
| #include <guacamole/protocol.h> |
| #include <guacamole/socket.h> |
| #include <guacamole/stream.h> |
| #include <guacamole/user.h> |
| #include <winpr/nt.h> |
| |
| #include <stdlib.h> |
| |
| /** |
| * Writes the given filename to the given upload path, sanitizing the filename |
| * and translating the filename to the root directory. |
| * |
| * @param filename |
| * The filename to sanitize and move to the root directory. |
| * |
| * @param path |
| * A pointer to a buffer which should receive the sanitized path. The |
| * buffer must have at least GUAC_RDP_FS_MAX_PATH bytes available. |
| */ |
| static void __generate_upload_path(const char* filename, char* path) { |
| |
| int i; |
| |
| /* Add initial backslash */ |
| *(path++) = '\\'; |
| |
| for (i=1; i<GUAC_RDP_FS_MAX_PATH; i++) { |
| |
| /* Get current, stop at end */ |
| char c = *(filename++); |
| if (c == '\0') |
| break; |
| |
| /* Replace special characters with underscores */ |
| if (c == '/' || c == '\\') |
| c = '_'; |
| |
| *(path++) = c; |
| |
| } |
| |
| /* Terminate path */ |
| *path = '\0'; |
| |
| } |
| |
| int guac_rdp_upload_file_handler(guac_user* user, guac_stream* stream, |
| char* mimetype, char* filename) { |
| |
| guac_client* client = user->client; |
| guac_rdp_client* rdp_client = (guac_rdp_client*) client->data; |
| |
| int file_id; |
| char file_path[GUAC_RDP_FS_MAX_PATH]; |
| |
| /* Get filesystem, return error if no filesystem */ |
| guac_rdp_fs* fs = rdp_client->filesystem; |
| if (fs == NULL) { |
| guac_protocol_send_ack(user->socket, stream, "FAIL (NO FS)", |
| GUAC_PROTOCOL_STATUS_SERVER_ERROR); |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |
| /* Translate name */ |
| __generate_upload_path(filename, file_path); |
| |
| /* Open file */ |
| file_id = guac_rdp_fs_open(fs, file_path, GENERIC_WRITE, 0, |
| FILE_OVERWRITE_IF, 0); |
| if (file_id < 0) { |
| guac_protocol_send_ack(user->socket, stream, "FAIL (CANNOT OPEN)", |
| GUAC_PROTOCOL_STATUS_CLIENT_FORBIDDEN); |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |
| /* Init upload status */ |
| guac_rdp_upload_status* upload_status = malloc(sizeof(guac_rdp_upload_status)); |
| upload_status->offset = 0; |
| upload_status->file_id = file_id; |
| stream->data = upload_status; |
| stream->blob_handler = guac_rdp_upload_blob_handler; |
| stream->end_handler = guac_rdp_upload_end_handler; |
| |
| guac_protocol_send_ack(user->socket, stream, "OK (STREAM BEGIN)", |
| GUAC_PROTOCOL_STATUS_SUCCESS); |
| guac_socket_flush(user->socket); |
| return 0; |
| |
| } |
| |
| int guac_rdp_upload_blob_handler(guac_user* user, guac_stream* stream, |
| void* data, int length) { |
| |
| int bytes_written; |
| guac_rdp_upload_status* upload_status = (guac_rdp_upload_status*) stream->data; |
| |
| /* Get filesystem, return error if no filesystem */ |
| guac_client* client = user->client; |
| guac_rdp_client* rdp_client = (guac_rdp_client*) client->data; |
| guac_rdp_fs* fs = rdp_client->filesystem; |
| if (fs == NULL) { |
| guac_protocol_send_ack(user->socket, stream, "FAIL (NO FS)", |
| GUAC_PROTOCOL_STATUS_SERVER_ERROR); |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |
| /* Write entire block */ |
| while (length > 0) { |
| |
| /* Attempt write */ |
| bytes_written = guac_rdp_fs_write(fs, upload_status->file_id, |
| upload_status->offset, data, length); |
| |
| /* On error, abort */ |
| if (bytes_written < 0) { |
| guac_protocol_send_ack(user->socket, stream, |
| "FAIL (BAD WRITE)", |
| GUAC_PROTOCOL_STATUS_CLIENT_FORBIDDEN); |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |
| /* Update counters */ |
| upload_status->offset += bytes_written; |
| data += bytes_written; |
| length -= bytes_written; |
| |
| } |
| |
| guac_protocol_send_ack(user->socket, stream, "OK (DATA RECEIVED)", |
| GUAC_PROTOCOL_STATUS_SUCCESS); |
| guac_socket_flush(user->socket); |
| return 0; |
| |
| } |
| |
| int guac_rdp_upload_end_handler(guac_user* user, guac_stream* stream) { |
| |
| guac_client* client = user->client; |
| guac_rdp_client* rdp_client = (guac_rdp_client*) client->data; |
| guac_rdp_upload_status* upload_status = (guac_rdp_upload_status*) stream->data; |
| |
| /* Get filesystem, return error if no filesystem */ |
| guac_rdp_fs* fs = rdp_client->filesystem; |
| if (fs == NULL) { |
| guac_protocol_send_ack(user->socket, stream, "FAIL (NO FS)", |
| GUAC_PROTOCOL_STATUS_SERVER_ERROR); |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |
| /* Close file */ |
| guac_rdp_fs_close(fs, upload_status->file_id); |
| |
| /* Acknowledge stream end */ |
| guac_protocol_send_ack(user->socket, stream, "OK (STREAM END)", |
| GUAC_PROTOCOL_STATUS_SUCCESS); |
| guac_socket_flush(user->socket); |
| |
| free(upload_status); |
| return 0; |
| |
| } |
| |
| int guac_rdp_upload_put_handler(guac_user* user, guac_object* object, |
| guac_stream* stream, char* mimetype, char* name) { |
| |
| guac_client* client = user->client; |
| guac_rdp_client* rdp_client = (guac_rdp_client*) client->data; |
| |
| /* Get filesystem, return error if no filesystem */ |
| guac_rdp_fs* fs = rdp_client->filesystem; |
| if (fs == NULL) { |
| guac_protocol_send_ack(user->socket, stream, "FAIL (NO FS)", |
| GUAC_PROTOCOL_STATUS_SERVER_ERROR); |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |
| /* Open file */ |
| int file_id = guac_rdp_fs_open(fs, name, GENERIC_WRITE, 0, |
| FILE_OVERWRITE_IF, 0); |
| |
| /* Abort on failure */ |
| if (file_id < 0) { |
| guac_protocol_send_ack(user->socket, stream, "FAIL (CANNOT OPEN)", |
| GUAC_PROTOCOL_STATUS_CLIENT_FORBIDDEN); |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |
| /* Init upload stream data */ |
| guac_rdp_upload_status* upload_status = malloc(sizeof(guac_rdp_upload_status)); |
| upload_status->offset = 0; |
| upload_status->file_id = file_id; |
| |
| /* Allocate stream, init for file upload */ |
| stream->data = upload_status; |
| stream->blob_handler = guac_rdp_upload_blob_handler; |
| stream->end_handler = guac_rdp_upload_end_handler; |
| |
| /* Acknowledge stream creation */ |
| guac_protocol_send_ack(user->socket, stream, "OK (STREAM BEGIN)", |
| GUAC_PROTOCOL_STATUS_SUCCESS); |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |