mirror of
https://github.com/libretro/RetroArch.git
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314 lines
7.7 KiB
C
314 lines
7.7 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2011-2016 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <retro_miscellaneous.h>
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#include <net/net_http.h>
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#include <queues/message_queue.h>
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#include <lists/string_list.h>
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#include <string/stdstring.h>
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#include <compat/strl.h>
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#include <file/file_path.h>
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#include <file/archive_file.h>
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#include <net/net_compat.h>
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#include <retro_stat.h>
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#include "../msg_hash.h"
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#include "../verbosity.h"
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#include "tasks_internal.h"
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enum http_status_enum
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{
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HTTP_STATUS_POLL = 0,
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HTTP_STATUS_CONNECTION_TRANSFER,
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HTTP_STATUS_CONNECTION_TRANSFER_PARSE,
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HTTP_STATUS_TRANSFER,
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HTTP_STATUS_TRANSFER_PARSE,
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HTTP_STATUS_TRANSFER_PARSE_FREE
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};
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typedef struct http_handle
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{
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struct
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{
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struct http_connection_t *handle;
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transfer_cb_t cb;
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char elem1[PATH_MAX_LENGTH];
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char url[PATH_MAX_LENGTH];
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} connection;
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struct http_t *handle;
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transfer_cb_t cb;
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unsigned status;
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bool error;
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} http_handle_t;
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static int task_http_con_iterate_transfer(http_handle_t *http)
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{
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if (!net_http_connection_iterate(http->connection.handle))
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return -1;
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return 0;
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}
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static int task_http_conn_iterate_transfer_parse(
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http_handle_t *http)
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{
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if (net_http_connection_done(http->connection.handle))
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{
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if (http->connection.handle && http->connection.cb)
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http->connection.cb(http, 0);
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}
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net_http_connection_free(http->connection.handle);
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http->connection.handle = NULL;
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return 0;
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}
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static int cb_http_conn_default(void *data_, size_t len)
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{
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http_handle_t *http = (http_handle_t*)data_;
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if (!http)
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return -1;
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if (!network_init())
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return -1;
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http->handle = net_http_new(http->connection.handle);
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if (!http->handle)
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{
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RARCH_ERR("[http] Could not create new HTTP session handle.\n");
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http->error = true;
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return -1;
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}
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http->cb = NULL;
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return 0;
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}
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/**
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* task_http_iterate_transfer:
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*
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* Resumes HTTP transfer update.
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*
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* Returns: 0 when finished, -1 when we should continue
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* with the transfer on the next frame.
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**/
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static int task_http_iterate_transfer(retro_task_t *task)
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{
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http_handle_t *http = (http_handle_t*)task->state;
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size_t pos = 0, tot = 0;
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if (!net_http_update(http->handle, &pos, &tot))
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{
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task->progress = (tot == 0) ? -1 : (signed)(pos * 100 / tot);
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return -1;
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}
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return 0;
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}
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static void rarch_task_http_transfer_handler(retro_task_t *task)
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{
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http_transfer_data_t *data = NULL;
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http_handle_t *http = (http_handle_t*)task->state;
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if (task->cancelled)
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goto task_finished;
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switch (http->status)
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{
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case HTTP_STATUS_CONNECTION_TRANSFER_PARSE:
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task_http_conn_iterate_transfer_parse(http);
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http->status = HTTP_STATUS_TRANSFER;
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break;
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case HTTP_STATUS_CONNECTION_TRANSFER:
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if (!task_http_con_iterate_transfer(http))
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http->status = HTTP_STATUS_CONNECTION_TRANSFER_PARSE;
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break;
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case HTTP_STATUS_TRANSFER:
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if (!task_http_iterate_transfer(task))
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goto task_finished;
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break;
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case HTTP_STATUS_TRANSFER_PARSE:
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case HTTP_STATUS_POLL:
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goto task_finished;
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default:
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break;
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}
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if (http->error)
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goto task_finished;
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return;
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task_finished:
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task->finished = true;
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if (http->handle)
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{
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size_t len = 0;
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char *tmp = (char*)net_http_data(http->handle, &len, false);
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if (tmp && http->cb)
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http->cb(tmp, len);
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if (net_http_error(http->handle) || task->cancelled)
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{
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tmp = (char*)net_http_data(http->handle, &len, true);
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if (tmp)
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free(tmp);
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if (task->cancelled)
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task->error = strdup("Task cancelled.");
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else
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task->error = strdup("Download failed.");
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}
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else
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{
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data = (http_transfer_data_t*)calloc(1, sizeof(*data));
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data->data = tmp;
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data->len = len;
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task->task_data = data;
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}
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net_http_delete(http->handle);
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} else if (http->error)
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task->error = strdup("Internal error.");
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free(http);
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}
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static bool rarch_task_http_finder(retro_task_t *task, void *user_data)
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{
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http_handle_t *http = NULL;
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if (!task || (task->handler != rarch_task_http_transfer_handler))
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return false;
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if (!user_data)
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return false;
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http = (http_handle_t*)task->state;
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if (!http)
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return false;
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return string_is_equal(http->connection.url, (const char*)user_data);
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}
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static bool rarch_task_http_retriever(retro_task_t *task, void *data)
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{
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http_transfer_info_t *info = (http_transfer_info_t*)data;
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/* Extract HTTP handle and return already if invalid */
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http_handle_t *http = (http_handle_t *)task->state;
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if (!http)
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return false;
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/* Fill HTTP info link */
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strlcpy(info->url, http->connection.url, sizeof(info->url));
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info->progress = task->progress;
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return true;
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}
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void *rarch_task_push_http_transfer(const char *url, const char *type,
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retro_task_callback_t cb, void *user_data)
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{
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char tmp[PATH_MAX_LENGTH];
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task_finder_data_t find_data;
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struct http_connection_t *conn = NULL;
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retro_task_t *t = NULL;
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http_handle_t *http = NULL;
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if (string_is_empty(url))
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return NULL;
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find_data.func = rarch_task_http_finder;
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find_data.userdata = (void*)url;
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/* Concurrent download of the same file is not allowed */
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if (task_queue_ctl(TASK_QUEUE_CTL_FIND, &find_data))
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{
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RARCH_LOG("[http] '%s'' is already being downloaded.\n", url);
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return NULL;
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}
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conn = net_http_connection_new(url);
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if (!conn)
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return NULL;
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http = (http_handle_t*)calloc(1, sizeof(*http));
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if (!http)
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goto error;
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http->connection.handle = conn;
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http->connection.cb = &cb_http_conn_default;
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if (type)
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strlcpy(http->connection.elem1, type, sizeof(http->connection.elem1));
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strlcpy(http->connection.url, url, sizeof(http->connection.url));
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http->status = HTTP_STATUS_CONNECTION_TRANSFER;
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t = (retro_task_t*)calloc(1, sizeof(*t));
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if (!t)
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goto error;
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t->handler = rarch_task_http_transfer_handler;
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t->state = http;
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t->callback = cb;
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t->user_data = user_data;
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t->progress = -1;
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snprintf(tmp, sizeof(tmp), "%s '%s'",
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msg_hash_to_str(MSG_DOWNLOADING), path_basename(url));
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t->title = strdup(tmp);
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task_queue_ctl(TASK_QUEUE_CTL_PUSH, t);
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return t;
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error:
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if (conn)
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net_http_connection_free(conn);
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if (t)
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free(t);
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if (http)
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free(http);
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return NULL;
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}
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task_retriever_info_t *http_task_get_transfer_list(void)
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{
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task_retriever_data_t retrieve_data;
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/* Fill retrieve data */
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retrieve_data.handler = rarch_task_http_transfer_handler;
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retrieve_data.element_size = sizeof(http_transfer_info_t);
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retrieve_data.func = rarch_task_http_retriever;
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/* Build list of current HTTP transfers and return it */
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task_queue_ctl(TASK_QUEUE_CTL_RETRIEVE, &retrieve_data);
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return retrieve_data.list;
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}
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