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transmission/cli/cli.cc

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/******************************************************************************
* Copyright (c) Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#include <stdio.h> /* fprintf () */
#include <stdlib.h> /* atoi () */
#include <string.h> /* memcmp () */
#include <signal.h>
#include <libtransmission/transmission.h>
#include <libtransmission/error.h>
#include <libtransmission/file.h>
#include <libtransmission/tr-getopt.h>
#include <libtransmission/utils.h> /* tr_wait_msec */
#include <libtransmission/variant.h>
#include <libtransmission/version.h>
#include <libtransmission/web.h> /* tr_webRun */
/***
****
***/
#define MEM_K 1024
#define MEM_K_STR "KiB"
#define MEM_M_STR "MiB"
#define MEM_G_STR "GiB"
#define MEM_T_STR "TiB"
#define DISK_K 1000
#define DISK_B_STR "B"
#define DISK_K_STR "kB"
#define DISK_M_STR "MB"
#define DISK_G_STR "GB"
#define DISK_T_STR "TB"
#define SPEED_K 1000
#define SPEED_B_STR "B/s"
#define SPEED_K_STR "kB/s"
#define SPEED_M_STR "MB/s"
#define SPEED_G_STR "GB/s"
#define SPEED_T_STR "TB/s"
/***
****
***/
#define LINEWIDTH 80
#define MY_CONFIG_NAME "transmission"
#define MY_READABLE_NAME "transmission-cli"
static bool showVersion = false;
static bool verify = false;
static sig_atomic_t gotsig = false;
static sig_atomic_t manualUpdate = false;
static char const* torrentPath = nullptr;
static struct tr_option const options[] = {
{ 'b', "blocklist", "Enable peer blocklists", "b", false, nullptr },
{ 'B', "no-blocklist", "Disable peer blocklists", "B", false, nullptr },
{ 'd', "downlimit", "Set max download speed in " SPEED_K_STR, "d", true, "<speed>" },
{ 'D', "no-downlimit", "Don't limit the download speed", "D", false, nullptr },
{ 910, "encryption-required", "Encrypt all peer connections", "er", false, nullptr },
{ 911, "encryption-preferred", "Prefer encrypted peer connections", "ep", false, nullptr },
{ 912, "encryption-tolerated", "Prefer unencrypted peer connections", "et", false, nullptr },
{ 'f', "finish", "Run a script when the torrent finishes", "f", true, "<script>" },
{ 'g', "config-dir", "Where to find configuration files", "g", true, "<path>" },
{ 'm', "portmap", "Enable portmapping via NAT-PMP or UPnP", "m", false, nullptr },
{ 'M', "no-portmap", "Disable portmapping", "M", false, nullptr },
{ 'p', "port", "Port for incoming peers (Default: " TR_DEFAULT_PEER_PORT_STR ")", "p", true, "<port>" },
{ 't', "tos", "Peer socket TOS (0 to 255, default=" TR_DEFAULT_PEER_SOCKET_TOS_STR ")", "t", true, "<tos>" },
{ 'u', "uplimit", "Set max upload speed in " SPEED_K_STR, "u", true, "<speed>" },
{ 'U', "no-uplimit", "Don't limit the upload speed", "U", false, nullptr },
{ 'v', "verify", "Verify the specified torrent", "v", false, nullptr },
{ 'V', "version", "Show version number and exit", "V", false, nullptr },
{ 'w', "download-dir", "Where to save downloaded data", "w", true, "<path>" },
{ 0, nullptr, nullptr, nullptr, false, nullptr }
};
static char const* getUsage(void)
{
// clang-format off
return
"A fast and easy BitTorrent client\n"
"\n"
"Usage: " MY_READABLE_NAME " [options] <file|url|magnet>";
// clang-format on
}
static int parseCommandLine(tr_variant*, int argc, char const** argv);
static void sigHandler(int signal);
static char* tr_strlratio(char* buf, double ratio, size_t buflen)
{
if ((int)ratio == TR_RATIO_NA)
{
tr_strlcpy(buf, _("None"), buflen);
}
else if ((int)ratio == TR_RATIO_INF)
{
tr_strlcpy(buf, "Inf", buflen);
}
else if (ratio < 10.0)
{
tr_snprintf(buf, buflen, "%.2f", ratio);
}
else if (ratio < 100.0)
{
tr_snprintf(buf, buflen, "%.1f", ratio);
}
else
{
tr_snprintf(buf, buflen, "%.0f", ratio);
}
return buf;
}
static bool waitingOnWeb;
static void onTorrentFileDownloaded(
[[maybe_unused]] tr_session* session,
[[maybe_unused]] bool did_connect,
[[maybe_unused]] bool did_timeout,
[[maybe_unused]] long response_code,
void const* response,
size_t response_byte_count,
void* vctor)
{
auto* ctor = static_cast<tr_ctor*>(vctor);
tr_ctorSetMetainfo(ctor, response, response_byte_count);
waitingOnWeb = false;
}
static void getStatusStr(tr_stat const* st, char* buf, size_t buflen)
{
if (st->activity == TR_STATUS_CHECK_WAIT)
{
tr_snprintf(buf, buflen, "Waiting to verify local files");
}
else if (st->activity == TR_STATUS_CHECK)
{
tr_snprintf(
buf,
buflen,
"Verifying local files (%.2f%%, %.2f%% valid)",
tr_truncd(100 * st->recheckProgress, 2),
tr_truncd(100 * st->percentDone, 2));
}
else if (st->activity == TR_STATUS_DOWNLOAD)
{
char upStr[80];
char dnStr[80];
char ratioStr[80];
tr_formatter_speed_KBps(upStr, st->pieceUploadSpeed_KBps, sizeof(upStr));
tr_formatter_speed_KBps(dnStr, st->pieceDownloadSpeed_KBps, sizeof(dnStr));
tr_strlratio(ratioStr, st->ratio, sizeof(ratioStr));
tr_snprintf(
buf,
buflen,
"Progress: %.1f%%, dl from %d of %d peers (%s), ul to %d (%s) [%s]",
tr_truncd(100 * st->percentDone, 1),
st->peersSendingToUs,
st->peersConnected,
dnStr,
st->peersGettingFromUs,
upStr,
ratioStr);
}
else if (st->activity == TR_STATUS_SEED)
{
char upStr[80];
char ratioStr[80];
tr_formatter_speed_KBps(upStr, st->pieceUploadSpeed_KBps, sizeof(upStr));
tr_strlratio(ratioStr, st->ratio, sizeof(ratioStr));
tr_snprintf(
buf,
buflen,
"Seeding, uploading to %d of %d peer(s), %s [%s]",
st->peersGettingFromUs,
st->peersConnected,
upStr,
ratioStr);
}
else
{
*buf = '\0';
}
}
static char const* getConfigDir(int argc, char const** argv)
{
int c;
char const* configDir = nullptr;
char const* optarg;
int const ind = tr_optind;
while ((c = tr_getopt(getUsage(), argc, argv, options, &optarg)) != TR_OPT_DONE)
{
if (c == 'g')
{
configDir = optarg;
break;
}
}
tr_optind = ind;
if (configDir == nullptr)
{
configDir = tr_getDefaultConfigDir(MY_CONFIG_NAME);
}
return configDir;
}
int tr_main(int argc, char* argv[])
{
tr_session* h;
tr_ctor* ctor;
tr_torrent* tor = nullptr;
tr_variant settings;
char const* configDir;
uint8_t* fileContents;
size_t fileLength;
char const* str;
tr_formatter_mem_init(MEM_K, MEM_K_STR, MEM_M_STR, MEM_G_STR, MEM_T_STR);
tr_formatter_size_init(DISK_K, DISK_K_STR, DISK_M_STR, DISK_G_STR, DISK_T_STR);
tr_formatter_speed_init(SPEED_K, SPEED_K_STR, SPEED_M_STR, SPEED_G_STR, SPEED_T_STR);
printf("%s %s\n", MY_READABLE_NAME, LONG_VERSION_STRING);
/* user needs to pass in at least one argument */
if (argc < 2)
{
tr_getopt_usage(MY_READABLE_NAME, getUsage(), options);
return EXIT_FAILURE;
}
/* load the defaults from config file + libtransmission defaults */
tr_variantInitDict(&settings, 0);
configDir = getConfigDir(argc, (char const**)argv);
tr_sessionLoadSettings(&settings, configDir, MY_CONFIG_NAME);
/* the command line overrides defaults */
if (parseCommandLine(&settings, argc, (char const**)argv) != 0)
{
return EXIT_FAILURE;
}
if (showVersion)
{
return EXIT_SUCCESS;
}
/* Check the options for validity */
if (torrentPath == nullptr)
{
fprintf(stderr, "No torrent specified!\n");
return EXIT_FAILURE;
}
if (tr_variantDictFindStr(&settings, TR_KEY_download_dir, &str, nullptr) && !tr_sys_path_exists(str, nullptr))
{
tr_error* error = nullptr;
if (!tr_sys_dir_create(str, TR_SYS_DIR_CREATE_PARENTS, 0700, &error))
{
fprintf(stderr, "Unable to create download directory \"%s\": %s\n", str, error->message);
tr_error_free(error);
return EXIT_FAILURE;
}
}
h = tr_sessionInit(configDir, false, &settings);
ctor = tr_ctorNew(h);
fileContents = tr_loadFile(torrentPath, &fileLength, nullptr);
tr_ctorSetPaused(ctor, TR_FORCE, false);
if (fileContents != nullptr)
{
tr_ctorSetMetainfo(ctor, fileContents, fileLength);
}
else if (memcmp(torrentPath, "magnet:?", 8) == 0)
{
tr_ctorSetMetainfoFromMagnetLink(ctor, torrentPath);
}
else if (memcmp(torrentPath, "http", 4) == 0)
{
tr_webRun(h, torrentPath, onTorrentFileDownloaded, ctor);
waitingOnWeb = true;
while (waitingOnWeb)
{
tr_wait_msec(1000);
}
}
else
{
fprintf(stderr, "ERROR: Unrecognized torrent \"%s\".\n", torrentPath);
fprintf(stderr, " * If you're trying to create a torrent, use transmission-create.\n");
fprintf(stderr, " * If you're trying to see a torrent's info, use transmission-show.\n");
tr_sessionClose(h);
return EXIT_FAILURE;
}
tr_free(fileContents);
tor = tr_torrentNew(ctor, nullptr, nullptr);
tr_ctorFree(ctor);
if (tor == nullptr)
{
fprintf(stderr, "Failed opening torrent file `%s'\n", torrentPath);
tr_sessionClose(h);
return EXIT_FAILURE;
}
signal(SIGINT, sigHandler);
#ifndef _WIN32
signal(SIGHUP, sigHandler);
#endif
tr_torrentStart(tor);
if (verify)
{
verify = false;
tr_torrentVerify(tor, nullptr, nullptr);
}
for (;;)
{
char line[LINEWIDTH];
tr_stat const* st;
char const* messageName[] = {
nullptr,
"Tracker gave a warning:",
"Tracker gave an error:",
"Error:",
};
tr_wait_msec(200);
if (gotsig)
{
gotsig = false;
printf("\nStopping torrent...\n");
tr_torrentStop(tor);
}
if (manualUpdate)
{
manualUpdate = false;
if (!tr_torrentCanManualUpdate(tor))
{
fprintf(stderr, "\nReceived SIGHUP, but can't send a manual update now\n");
}
else
{
fprintf(stderr, "\nReceived SIGHUP: manual update scheduled\n");
tr_torrentManualUpdate(tor);
}
}
st = tr_torrentStat(tor);
if (st->activity == TR_STATUS_STOPPED)
{
break;
}
getStatusStr(st, line, sizeof(line));
printf("\r%-*s", TR_ARG_TUPLE(LINEWIDTH, line));
if (messageName[st->error])
{
fprintf(stderr, "\n%s: %s\n", messageName[st->error], st->errorString);
}
}
tr_sessionSaveSettings(h, configDir, &settings);
printf("\n");
tr_variantFree(&settings);
tr_sessionClose(h);
return EXIT_SUCCESS;
}
/***
****
****
***/
static int parseCommandLine(tr_variant* d, int argc, char const** argv)
{
int c;
char const* optarg;
while ((c = tr_getopt(getUsage(), argc, argv, options, &optarg)) != TR_OPT_DONE)
{
switch (c)
{
case 'b':
tr_variantDictAddBool(d, TR_KEY_blocklist_enabled, true);
break;
case 'B':
tr_variantDictAddBool(d, TR_KEY_blocklist_enabled, false);
break;
case 'd':
tr_variantDictAddInt(d, TR_KEY_speed_limit_down, atoi(optarg));
tr_variantDictAddBool(d, TR_KEY_speed_limit_down_enabled, true);
break;
case 'D':
tr_variantDictAddBool(d, TR_KEY_speed_limit_down_enabled, false);
break;
case 'f':
tr_variantDictAddStr(d, TR_KEY_script_torrent_done_filename, optarg);
tr_variantDictAddBool(d, TR_KEY_script_torrent_done_enabled, true);
break;
case 'g': /* handled above */
break;
case 'm':
tr_variantDictAddBool(d, TR_KEY_port_forwarding_enabled, true);
break;
case 'M':
tr_variantDictAddBool(d, TR_KEY_port_forwarding_enabled, false);
break;
case 'p':
tr_variantDictAddInt(d, TR_KEY_peer_port, atoi(optarg));
break;
case 't':
tr_variantDictAddInt(d, TR_KEY_peer_socket_tos, atoi(optarg));
break;
case 'u':
tr_variantDictAddInt(d, TR_KEY_speed_limit_up, atoi(optarg));
tr_variantDictAddBool(d, TR_KEY_speed_limit_up_enabled, true);
break;
case 'U':
tr_variantDictAddBool(d, TR_KEY_speed_limit_up_enabled, false);
break;
case 'v':
verify = true;
break;
case 'V':
showVersion = true;
break;
case 'w':
tr_variantDictAddStr(d, TR_KEY_download_dir, optarg);
break;
case 910:
tr_variantDictAddInt(d, TR_KEY_encryption, TR_ENCRYPTION_REQUIRED);
break;
case 911:
tr_variantDictAddInt(d, TR_KEY_encryption, TR_ENCRYPTION_PREFERRED);
break;
case 912:
tr_variantDictAddInt(d, TR_KEY_encryption, TR_CLEAR_PREFERRED);
break;
case TR_OPT_UNK:
if (torrentPath == nullptr)
{
torrentPath = optarg;
}
break;
default:
return 1;
}
}
return 0;
}
static void sigHandler(int signal)
{
switch (signal)
{
case SIGINT:
gotsig = true;
break;
#ifndef _WIN32
case SIGHUP:
manualUpdate = true;
break;
#endif
default:
break;
}
}
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