480 lines
11 KiB
C++
480 lines
11 KiB
C++
/*
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* This file Copyright (C) 2009-2014 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#include <cerrno> /* EINVAL */
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#include "transmission.h"
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#include "file.h"
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#include "magnet.h"
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#include "session.h" /* tr_sessionFindTorrentFile() */
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#include "torrent.h" /* tr_ctorGetSave() */
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#include "tr-assert.h"
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#include "utils.h" /* tr_new0 */
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#include "variant.h"
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struct optional_args
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{
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bool isSet_paused;
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bool isSet_connected;
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bool isSet_downloadDir;
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bool isPaused;
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uint16_t peerLimit;
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char* downloadDir;
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};
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/** Opaque class used when instantiating torrents.
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* @ingroup tr_ctor */
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struct tr_ctor
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{
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tr_session const* session;
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bool saveInOurTorrentsDir;
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bool doDelete;
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tr_priority_t bandwidthPriority;
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bool isSet_metainfo;
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bool isSet_delete;
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tr_variant metainfo;
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char* sourceFile;
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struct optional_args optionalArgs[2];
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char* cookies;
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char* incompleteDir;
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tr_file_index_t* want;
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tr_file_index_t wantSize;
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tr_file_index_t* notWant;
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tr_file_index_t notWantSize;
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tr_file_index_t* low;
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tr_file_index_t lowSize;
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tr_file_index_t* normal;
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tr_file_index_t normalSize;
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tr_file_index_t* high;
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tr_file_index_t highSize;
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};
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/***
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****
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***/
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static void setSourceFile(tr_ctor* ctor, char const* sourceFile)
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{
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tr_free(ctor->sourceFile);
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ctor->sourceFile = tr_strdup(sourceFile);
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}
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static void clearMetainfo(tr_ctor* ctor)
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{
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if (ctor->isSet_metainfo)
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{
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ctor->isSet_metainfo = false;
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tr_variantFree(&ctor->metainfo);
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}
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setSourceFile(ctor, nullptr);
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}
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int tr_ctorSetMetainfo(tr_ctor* ctor, void const* metainfo, size_t len)
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{
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clearMetainfo(ctor);
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auto const err = tr_variantFromBenc(&ctor->metainfo, metainfo, len);
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ctor->isSet_metainfo = err == 0;
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return err;
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}
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char const* tr_ctorGetSourceFile(tr_ctor const* ctor)
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{
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return ctor->sourceFile;
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}
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int tr_ctorSetMetainfoFromMagnetLink(tr_ctor* ctor, char const* magnet_link)
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{
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auto err = int{};
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tr_magnet_info* magnet_info = tr_magnetParse(magnet_link);
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if (magnet_info == nullptr)
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{
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err = -1;
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}
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else
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{
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auto tmp = tr_variant{};
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auto len = size_t{};
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tr_magnetCreateMetainfo(magnet_info, &tmp);
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char* const str = tr_variantToStr(&tmp, TR_VARIANT_FMT_BENC, &len);
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err = tr_ctorSetMetainfo(ctor, (uint8_t const*)str, len);
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tr_free(str);
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tr_variantFree(&tmp);
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tr_magnetFree(magnet_info);
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}
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return err;
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}
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int tr_ctorSetMetainfoFromFile(tr_ctor* ctor, char const* filename)
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{
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auto len = size_t{};
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auto* const metainfo = tr_loadFile(filename, &len, nullptr);
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auto err = int{};
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if (metainfo != nullptr && len != 0)
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{
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err = tr_ctorSetMetainfo(ctor, metainfo, len);
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}
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else
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{
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clearMetainfo(ctor);
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err = 1;
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}
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setSourceFile(ctor, filename);
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/* if no `name' field was set, then set it from the filename */
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if (ctor->isSet_metainfo)
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{
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tr_variant* info = nullptr;
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if (tr_variantDictFindDict(&ctor->metainfo, TR_KEY_info, &info))
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{
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char const* name = nullptr;
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if (!tr_variantDictFindStr(info, TR_KEY_name_utf_8, &name, nullptr) &&
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!tr_variantDictFindStr(info, TR_KEY_name, &name, nullptr))
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{
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name = nullptr;
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}
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if (tr_str_is_empty(name))
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{
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char* base = tr_sys_path_basename(filename, nullptr);
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if (base != nullptr)
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{
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tr_variantDictAddStr(info, TR_KEY_name, base);
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tr_free(base);
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}
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}
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}
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}
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tr_free(metainfo);
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return err;
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}
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int tr_ctorSetMetainfoFromHash(tr_ctor* ctor, char const* hashString)
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{
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char const* const filename = tr_sessionFindTorrentFile(ctor->session, hashString);
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return filename == nullptr ? EINVAL : tr_ctorSetMetainfoFromFile(ctor, filename);
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}
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/***
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****
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***/
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void tr_ctorSetFilePriorities(tr_ctor* ctor, tr_file_index_t const* files, tr_file_index_t fileCount, tr_priority_t priority)
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{
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tr_file_index_t** myfiles = nullptr;
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tr_file_index_t* mycount = nullptr;
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switch (priority)
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{
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case TR_PRI_LOW:
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myfiles = &ctor->low;
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mycount = &ctor->lowSize;
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break;
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case TR_PRI_HIGH:
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myfiles = &ctor->high;
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mycount = &ctor->highSize;
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break;
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default /*TR_PRI_NORMAL*/:
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myfiles = &ctor->normal;
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mycount = &ctor->normalSize;
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break;
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}
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tr_free(*myfiles);
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*myfiles = static_cast<tr_file_index_t*>(tr_memdup(files, sizeof(tr_file_index_t) * fileCount));
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*mycount = fileCount;
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}
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void tr_ctorInitTorrentPriorities(tr_ctor const* ctor, tr_torrent* tor)
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{
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for (tr_file_index_t i = 0; i < ctor->lowSize; ++i)
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{
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tr_torrentInitFilePriority(tor, ctor->low[i], TR_PRI_LOW);
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}
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for (tr_file_index_t i = 0; i < ctor->normalSize; ++i)
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{
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tr_torrentInitFilePriority(tor, ctor->normal[i], TR_PRI_NORMAL);
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}
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for (tr_file_index_t i = 0; i < ctor->highSize; ++i)
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{
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tr_torrentInitFilePriority(tor, ctor->high[i], TR_PRI_HIGH);
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}
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}
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void tr_ctorSetFilesWanted(tr_ctor* ctor, tr_file_index_t const* files, tr_file_index_t fileCount, bool wanted)
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{
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tr_file_index_t** myfiles = wanted ? &ctor->want : &ctor->notWant;
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tr_file_index_t* mycount = wanted ? &ctor->wantSize : &ctor->notWantSize;
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tr_free(*myfiles);
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*myfiles = static_cast<tr_file_index_t*>(tr_memdup(files, sizeof(tr_file_index_t) * fileCount));
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*mycount = fileCount;
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}
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void tr_ctorInitTorrentWanted(tr_ctor const* ctor, tr_torrent* tor)
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{
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if (ctor->notWantSize != 0)
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{
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tr_torrentInitFileDLs(tor, ctor->notWant, ctor->notWantSize, false);
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}
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if (ctor->wantSize != 0)
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{
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tr_torrentInitFileDLs(tor, ctor->want, ctor->wantSize, true);
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}
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}
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/***
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****
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***/
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void tr_ctorSetDeleteSource(tr_ctor* ctor, bool deleteSource)
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{
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ctor->doDelete = deleteSource;
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ctor->isSet_delete = true;
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}
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bool tr_ctorGetDeleteSource(tr_ctor const* ctor, bool* setme)
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{
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bool ret = true;
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if (!ctor->isSet_delete)
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{
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ret = false;
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}
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else if (setme != nullptr)
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{
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*setme = ctor->doDelete;
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}
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return ret;
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}
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/***
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****
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***/
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void tr_ctorSetSave(tr_ctor* ctor, bool saveInOurTorrentsDir)
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{
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ctor->saveInOurTorrentsDir = saveInOurTorrentsDir;
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}
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bool tr_ctorGetSave(tr_ctor const* ctor)
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{
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return ctor != nullptr && ctor->saveInOurTorrentsDir;
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}
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void tr_ctorSetPaused(tr_ctor* ctor, tr_ctorMode mode, bool isPaused)
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{
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TR_ASSERT(ctor != nullptr);
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TR_ASSERT(mode == TR_FALLBACK || mode == TR_FORCE);
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struct optional_args* args = &ctor->optionalArgs[mode];
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args->isSet_paused = true;
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args->isPaused = isPaused;
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}
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void tr_ctorSetPeerLimit(tr_ctor* ctor, tr_ctorMode mode, uint16_t peerLimit)
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{
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TR_ASSERT(ctor != nullptr);
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TR_ASSERT(mode == TR_FALLBACK || mode == TR_FORCE);
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struct optional_args* args = &ctor->optionalArgs[mode];
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args->isSet_connected = true;
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args->peerLimit = peerLimit;
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}
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void tr_ctorSetDownloadDir(tr_ctor* ctor, tr_ctorMode mode, char const* directory)
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{
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TR_ASSERT(ctor != nullptr);
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TR_ASSERT(mode == TR_FALLBACK || mode == TR_FORCE);
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struct optional_args* args = &ctor->optionalArgs[mode];
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tr_free(args->downloadDir);
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args->downloadDir = nullptr;
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args->isSet_downloadDir = false;
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if (!tr_str_is_empty(directory))
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{
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args->isSet_downloadDir = true;
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args->downloadDir = tr_strdup(directory);
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}
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}
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void tr_ctorSetIncompleteDir(tr_ctor* ctor, char const* directory)
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{
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tr_free(ctor->incompleteDir);
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ctor->incompleteDir = tr_strdup(directory);
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}
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bool tr_ctorGetPeerLimit(tr_ctor const* ctor, tr_ctorMode mode, uint16_t* setmeCount)
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{
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bool ret = true;
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struct optional_args const* args = &ctor->optionalArgs[mode];
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if (!args->isSet_connected)
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{
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ret = false;
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}
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else if (setmeCount != nullptr)
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{
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*setmeCount = args->peerLimit;
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}
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return ret;
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}
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bool tr_ctorGetPaused(tr_ctor const* ctor, tr_ctorMode mode, bool* setmeIsPaused)
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{
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bool ret = true;
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struct optional_args const* args = &ctor->optionalArgs[mode];
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if (!args->isSet_paused)
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{
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ret = false;
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}
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else if (setmeIsPaused != nullptr)
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{
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*setmeIsPaused = args->isPaused;
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}
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return ret;
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}
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bool tr_ctorGetDownloadDir(tr_ctor const* ctor, tr_ctorMode mode, char const** setmeDownloadDir)
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{
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bool ret = true;
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struct optional_args const* args = &ctor->optionalArgs[mode];
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if (!args->isSet_downloadDir)
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{
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ret = false;
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}
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else if (setmeDownloadDir != nullptr)
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{
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*setmeDownloadDir = args->downloadDir;
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}
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return ret;
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}
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bool tr_ctorGetIncompleteDir(tr_ctor const* ctor, char const** setmeIncompleteDir)
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{
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bool ret = true;
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if (ctor->incompleteDir == nullptr)
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{
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ret = false;
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}
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else
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{
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*setmeIncompleteDir = ctor->incompleteDir;
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}
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return ret;
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}
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bool tr_ctorGetMetainfo(tr_ctor const* ctor, tr_variant const** setme)
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{
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bool ret = true;
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if (!ctor->isSet_metainfo)
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{
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ret = false;
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}
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else if (setme != nullptr)
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{
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*setme = &ctor->metainfo;
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}
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return ret;
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}
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tr_session* tr_ctorGetSession(tr_ctor const* ctor)
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{
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return (tr_session*)ctor->session;
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}
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/***
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****
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***/
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static bool isPriority(int i)
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{
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return i == TR_PRI_LOW || i == TR_PRI_NORMAL || i == TR_PRI_HIGH;
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}
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void tr_ctorSetBandwidthPriority(tr_ctor* ctor, tr_priority_t priority)
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{
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if (isPriority(priority))
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{
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ctor->bandwidthPriority = priority;
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}
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}
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tr_priority_t tr_ctorGetBandwidthPriority(tr_ctor const* ctor)
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{
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return ctor->bandwidthPriority;
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}
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/***
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****
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***/
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tr_ctor* tr_ctorNew(tr_session const* session)
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{
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tr_ctor* ctor = tr_new0(struct tr_ctor, 1);
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ctor->session = session;
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ctor->bandwidthPriority = TR_PRI_NORMAL;
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if (session != nullptr)
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{
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tr_ctorSetDeleteSource(ctor, tr_sessionGetDeleteSource(session));
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tr_ctorSetPaused(ctor, TR_FALLBACK, tr_sessionGetPaused(session));
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tr_ctorSetPeerLimit(ctor, TR_FALLBACK, session->peerLimitPerTorrent);
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tr_ctorSetDownloadDir(ctor, TR_FALLBACK, tr_sessionGetDownloadDir(session));
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}
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tr_ctorSetSave(ctor, true);
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return ctor;
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}
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void tr_ctorFree(tr_ctor* ctor)
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{
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clearMetainfo(ctor);
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tr_free(ctor->optionalArgs[1].downloadDir);
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tr_free(ctor->optionalArgs[0].downloadDir);
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tr_free(ctor->incompleteDir);
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tr_free(ctor->want);
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tr_free(ctor->notWant);
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tr_free(ctor->low);
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tr_free(ctor->high);
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tr_free(ctor->normal);
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tr_free(ctor);
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}
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