| /* |
| * 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 "common/json.h" |
| #include "download.h" |
| #include "fs.h" |
| #include "ls.h" |
| #include "rdp.h" |
| |
| #include <guacamole/client.h> |
| #include <guacamole/object.h> |
| #include <guacamole/protocol.h> |
| #include <guacamole/socket.h> |
| #include <guacamole/stream.h> |
| #include <guacamole/string.h> |
| #include <guacamole/user.h> |
| #include <winpr/nt.h> |
| #include <winpr/shell.h> |
| |
| #include <stdlib.h> |
| |
| int guac_rdp_download_ack_handler(guac_user* user, guac_stream* stream, |
| char* message, guac_protocol_status status) { |
| |
| guac_client* client = user->client; |
| guac_rdp_client* rdp_client = (guac_rdp_client*) client->data; |
| guac_rdp_download_status* download_status = (guac_rdp_download_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; |
| } |
| |
| /* If successful, read data */ |
| if (status == GUAC_PROTOCOL_STATUS_SUCCESS) { |
| |
| /* Attempt read into buffer */ |
| char buffer[4096]; |
| int bytes_read = guac_rdp_fs_read(fs, |
| download_status->file_id, |
| download_status->offset, buffer, sizeof(buffer)); |
| |
| /* If bytes read, send as blob */ |
| if (bytes_read > 0) { |
| download_status->offset += bytes_read; |
| guac_protocol_send_blob(user->socket, stream, |
| buffer, bytes_read); |
| } |
| |
| /* If EOF, send end */ |
| else if (bytes_read == 0) { |
| guac_protocol_send_end(user->socket, stream); |
| guac_user_free_stream(user, stream); |
| free(download_status); |
| } |
| |
| /* Otherwise, fail stream */ |
| else { |
| guac_user_log(user, GUAC_LOG_ERROR, |
| "Error reading file for download"); |
| guac_protocol_send_end(user->socket, stream); |
| guac_user_free_stream(user, stream); |
| free(download_status); |
| } |
| |
| guac_socket_flush(user->socket); |
| |
| } |
| |
| /* Otherwise, return stream to user */ |
| else |
| guac_user_free_stream(user, stream); |
| |
| return 0; |
| |
| } |
| |
| int guac_rdp_download_get_handler(guac_user* user, guac_object* object, |
| char* name) { |
| |
| guac_client* client = user->client; |
| guac_rdp_client* rdp_client = (guac_rdp_client*) client->data; |
| |
| /* Get filesystem, ignore request if no filesystem */ |
| guac_rdp_fs* fs = rdp_client->filesystem; |
| if (fs == NULL) |
| return 0; |
| |
| /* Attempt to open file for reading */ |
| int file_id = guac_rdp_fs_open(fs, name, GENERIC_READ, 0, FILE_OPEN, 0); |
| if (file_id < 0) { |
| guac_user_log(user, GUAC_LOG_INFO, "Unable to read file \"%s\"", |
| name); |
| return 0; |
| } |
| |
| /* Get opened file */ |
| guac_rdp_fs_file* file = guac_rdp_fs_get_file(fs, file_id); |
| if (file == NULL) { |
| guac_client_log(fs->client, GUAC_LOG_DEBUG, |
| "%s: Successful open produced bad file_id: %i", |
| __func__, file_id); |
| return 0; |
| } |
| |
| /* If directory, send contents of directory */ |
| if (file->attributes & FILE_ATTRIBUTE_DIRECTORY) { |
| |
| /* Create stream data */ |
| guac_rdp_ls_status* ls_status = malloc(sizeof(guac_rdp_ls_status)); |
| ls_status->fs = fs; |
| ls_status->file_id = file_id; |
| guac_strlcpy(ls_status->directory_name, name, |
| sizeof(ls_status->directory_name)); |
| |
| /* Allocate stream for body */ |
| guac_stream* stream = guac_user_alloc_stream(user); |
| stream->ack_handler = guac_rdp_ls_ack_handler; |
| stream->data = ls_status; |
| |
| /* Init JSON object state */ |
| guac_common_json_begin_object(user, stream, |
| &ls_status->json_state); |
| |
| /* Associate new stream with get request */ |
| guac_protocol_send_body(user->socket, object, stream, |
| GUAC_USER_STREAM_INDEX_MIMETYPE, name); |
| |
| } |
| |
| /* Otherwise, send file contents */ |
| else { |
| |
| /* Create stream data */ |
| guac_rdp_download_status* download_status = malloc(sizeof(guac_rdp_download_status)); |
| download_status->file_id = file_id; |
| download_status->offset = 0; |
| |
| /* Allocate stream for body */ |
| guac_stream* stream = guac_user_alloc_stream(user); |
| stream->data = download_status; |
| stream->ack_handler = guac_rdp_download_ack_handler; |
| |
| /* Associate new stream with get request */ |
| guac_protocol_send_body(user->socket, object, stream, |
| "application/octet-stream", name); |
| |
| } |
| |
| guac_socket_flush(user->socket); |
| return 0; |
| } |
| |
| void* guac_rdp_download_to_user(guac_user* user, void* data) { |
| |
| /* Do not bother attempting the download if the user has left */ |
| if (user == NULL) |
| return NULL; |
| |
| guac_client* client = user->client; |
| guac_rdp_client* rdp_client = (guac_rdp_client*) client->data; |
| guac_rdp_fs* filesystem = rdp_client->filesystem; |
| |
| /* Ignore download if filesystem has been unloaded */ |
| if (filesystem == NULL) |
| return NULL; |
| |
| /* Attempt to open requested file */ |
| char* path = (char*) data; |
| int file_id = guac_rdp_fs_open(filesystem, path, |
| FILE_READ_DATA, 0, FILE_OPEN, 0); |
| |
| /* If file opened successfully, start stream */ |
| if (file_id >= 0) { |
| |
| /* Associate stream with transfer status */ |
| guac_stream* stream = guac_user_alloc_stream(user); |
| guac_rdp_download_status* download_status = malloc(sizeof(guac_rdp_download_status)); |
| stream->data = download_status; |
| stream->ack_handler = guac_rdp_download_ack_handler; |
| download_status->file_id = file_id; |
| download_status->offset = 0; |
| |
| guac_user_log(user, GUAC_LOG_DEBUG, "%s: Initiating download " |
| "of \"%s\"", __func__, path); |
| |
| /* Begin stream */ |
| guac_protocol_send_file(user->socket, stream, |
| "application/octet-stream", guac_rdp_fs_basename(path)); |
| guac_socket_flush(user->socket); |
| |
| /* Download started successfully */ |
| return stream; |
| |
| } |
| |
| /* Download failed */ |
| guac_user_log(user, GUAC_LOG_ERROR, "Unable to download \"%s\"", path); |
| return NULL; |
| |
| } |
| |
