381 lines
9.8 KiB
C++
381 lines
9.8 KiB
C++
/*
|
|
* This file Copyright (C) 2012-2014 Mnemosyne LLC
|
|
*
|
|
* It may be used under the GNU GPL versions 2 or 3
|
|
* or any future license endorsed by Mnemosyne LLC.
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h> /* fprintf() */
|
|
#include <string.h> /* strcmp(), strchr(), memcmp() */
|
|
#include <stdlib.h> /* qsort() */
|
|
#include <time.h>
|
|
|
|
#include <curl/curl.h>
|
|
|
|
#include <event2/buffer.h>
|
|
|
|
#include <libtransmission/transmission.h>
|
|
#include <libtransmission/tr-getopt.h>
|
|
#include <libtransmission/utils.h>
|
|
#include <libtransmission/web.h> /* tr_webGetResponseStr() */
|
|
#include <libtransmission/variant.h>
|
|
#include <libtransmission/version.h>
|
|
|
|
#include "units.h"
|
|
|
|
#define MY_NAME "transmission-show"
|
|
#define TIMEOUT_SECS 30
|
|
|
|
static tr_option options[] = {
|
|
{ 'm', "magnet", "Give a magnet link for the specified torrent", "m", false, nullptr },
|
|
{ 's', "scrape", "Ask the torrent's trackers how many peers are in the torrent's swarm", "s", false, nullptr },
|
|
{ 'u', "unsorted", "Do not sort files by name", "u", false, nullptr },
|
|
{ 'V', "version", "Show version number and exit", "V", false, nullptr },
|
|
{ 0, nullptr, nullptr, nullptr, false, nullptr }
|
|
};
|
|
|
|
static char const* getUsage(void)
|
|
{
|
|
return "Usage: " MY_NAME " [options] <.torrent file>";
|
|
}
|
|
|
|
static bool magnetFlag = false;
|
|
static bool scrapeFlag = false;
|
|
static bool unsorted = false;
|
|
static bool showVersion = false;
|
|
char const* filename = nullptr;
|
|
|
|
static int parseCommandLine(int argc, char const* const* argv)
|
|
{
|
|
int c;
|
|
char const* optarg;
|
|
|
|
while ((c = tr_getopt(getUsage(), argc, argv, options, &optarg)) != TR_OPT_DONE)
|
|
{
|
|
switch (c)
|
|
{
|
|
case 'm':
|
|
magnetFlag = true;
|
|
break;
|
|
|
|
case 's':
|
|
scrapeFlag = true;
|
|
break;
|
|
|
|
case 'u':
|
|
unsorted = true;
|
|
break;
|
|
|
|
case 'V':
|
|
showVersion = true;
|
|
break;
|
|
|
|
case TR_OPT_UNK:
|
|
filename = optarg;
|
|
break;
|
|
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void doShowMagnet(tr_info const* inf)
|
|
{
|
|
char* str = tr_torrentInfoGetMagnetLink(inf);
|
|
printf("%s", str);
|
|
tr_free(str);
|
|
}
|
|
|
|
static int compare_files_by_name(void const* va, void const* vb)
|
|
{
|
|
tr_file const* a = *(tr_file const* const*)va;
|
|
tr_file const* b = *(tr_file const* const*)vb;
|
|
return strcmp(a->name, b->name);
|
|
}
|
|
|
|
static char const* time_t_to_str(time_t timestamp)
|
|
{
|
|
if (timestamp == 0)
|
|
{
|
|
return "Unknown";
|
|
}
|
|
|
|
struct tm tm;
|
|
tr_localtime_r(×tamp, &tm);
|
|
static char buf[32];
|
|
strftime(buf, sizeof(buf), "%a %b %2e %T %Y%n", &tm); /* ctime equiv */
|
|
return buf;
|
|
}
|
|
|
|
static void showInfo(tr_info const* inf)
|
|
{
|
|
char buf[128];
|
|
tr_file** files;
|
|
int prevTier = -1;
|
|
|
|
/**
|
|
*** General Info
|
|
**/
|
|
|
|
printf("GENERAL\n\n");
|
|
printf(" Name: %s\n", inf->name);
|
|
printf(" Hash: %s\n", inf->hashString);
|
|
printf(" Created by: %s\n", inf->creator ? inf->creator : "Unknown");
|
|
printf(" Created on: %s\n", time_t_to_str(inf->dateCreated));
|
|
|
|
if (!tr_str_is_empty(inf->comment))
|
|
{
|
|
printf(" Comment: %s\n", inf->comment);
|
|
}
|
|
|
|
printf(" Piece Count: %d\n", inf->pieceCount);
|
|
printf(" Piece Size: %s\n", tr_formatter_mem_B(buf, inf->pieceSize, sizeof(buf)));
|
|
printf(" Total Size: %s\n", tr_formatter_size_B(buf, inf->totalSize, sizeof(buf)));
|
|
printf(" Privacy: %s\n", inf->isPrivate ? "Private torrent" : "Public torrent");
|
|
|
|
/**
|
|
*** Trackers
|
|
**/
|
|
|
|
printf("\nTRACKERS\n");
|
|
|
|
for (unsigned int i = 0; i < inf->trackerCount; ++i)
|
|
{
|
|
if (prevTier != inf->trackers[i].tier)
|
|
{
|
|
prevTier = inf->trackers[i].tier;
|
|
printf("\n Tier #%d\n", prevTier + 1);
|
|
}
|
|
|
|
printf(" %s\n", inf->trackers[i].announce);
|
|
}
|
|
|
|
/**
|
|
***
|
|
**/
|
|
|
|
if (inf->webseedCount > 0)
|
|
{
|
|
printf("\nWEBSEEDS\n\n");
|
|
|
|
for (unsigned int i = 0; i < inf->webseedCount; ++i)
|
|
{
|
|
printf(" %s\n", inf->webseeds[i]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
*** Files
|
|
**/
|
|
|
|
printf("\nFILES\n\n");
|
|
files = tr_new(tr_file*, inf->fileCount);
|
|
|
|
for (unsigned int i = 0; i < inf->fileCount; ++i)
|
|
{
|
|
files[i] = &inf->files[i];
|
|
}
|
|
|
|
if (!unsorted)
|
|
{
|
|
qsort(files, inf->fileCount, sizeof(tr_file*), compare_files_by_name);
|
|
}
|
|
|
|
for (unsigned int i = 0; i < inf->fileCount; ++i)
|
|
{
|
|
printf(" %s (%s)\n", files[i]->name, tr_formatter_size_B(buf, files[i]->length, sizeof(buf)));
|
|
}
|
|
|
|
tr_free(files);
|
|
}
|
|
|
|
static size_t writeFunc(void* ptr, size_t size, size_t nmemb, void* vbuf)
|
|
{
|
|
auto* buf = static_cast<evbuffer*>(vbuf);
|
|
size_t const byteCount = size * nmemb;
|
|
evbuffer_add(buf, ptr, byteCount);
|
|
return byteCount;
|
|
}
|
|
|
|
static CURL* tr_curl_easy_init(struct evbuffer* writebuf)
|
|
{
|
|
CURL* curl = curl_easy_init();
|
|
curl_easy_setopt(curl, CURLOPT_USERAGENT, MY_NAME "/" LONG_VERSION_STRING);
|
|
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeFunc);
|
|
curl_easy_setopt(curl, CURLOPT_WRITEDATA, writebuf);
|
|
curl_easy_setopt(curl, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
|
|
curl_easy_setopt(curl, CURLOPT_VERBOSE, tr_env_key_exists("TR_CURL_VERBOSE"));
|
|
curl_easy_setopt(curl, CURLOPT_ENCODING, "");
|
|
return curl;
|
|
}
|
|
|
|
static void doScrape(tr_info const* inf)
|
|
{
|
|
for (unsigned int i = 0; i < inf->trackerCount; ++i)
|
|
{
|
|
CURL* curl;
|
|
CURLcode res;
|
|
struct evbuffer* buf;
|
|
char const* scrape = inf->trackers[i].scrape;
|
|
char* url;
|
|
char escaped[SHA_DIGEST_LENGTH * 3 + 1];
|
|
|
|
if (scrape == nullptr)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
tr_http_escape_sha1(escaped, inf->hash);
|
|
|
|
url = tr_strdup_printf("%s%cinfo_hash=%s", scrape, strchr(scrape, '?') != nullptr ? '&' : '?', escaped);
|
|
|
|
printf("%s ... ", url);
|
|
fflush(stdout);
|
|
|
|
buf = evbuffer_new();
|
|
curl = tr_curl_easy_init(buf);
|
|
curl_easy_setopt(curl, CURLOPT_URL, url);
|
|
curl_easy_setopt(curl, CURLOPT_TIMEOUT, TIMEOUT_SECS);
|
|
|
|
if ((res = curl_easy_perform(curl)) != CURLE_OK)
|
|
{
|
|
printf("error: %s\n", curl_easy_strerror(res));
|
|
}
|
|
else
|
|
{
|
|
long response;
|
|
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
|
|
|
|
if (response != 200)
|
|
{
|
|
printf("error: unexpected response %ld \"%s\"\n", response, tr_webGetResponseStr(response));
|
|
}
|
|
else /* HTTP OK */
|
|
{
|
|
tr_variant top;
|
|
tr_variant* files;
|
|
bool matched = false;
|
|
char const* begin = (char const*)evbuffer_pullup(buf, -1);
|
|
|
|
if (tr_variantFromBenc(&top, begin, evbuffer_get_length(buf)) == 0)
|
|
{
|
|
if (tr_variantDictFindDict(&top, TR_KEY_files, &files))
|
|
{
|
|
size_t child_pos = 0;
|
|
tr_quark key;
|
|
tr_variant* val;
|
|
|
|
while (tr_variantDictChild(files, child_pos, &key, &val))
|
|
{
|
|
if (memcmp(inf->hash, tr_quark_get_string(key), SHA_DIGEST_LENGTH) == 0)
|
|
{
|
|
int64_t seeders;
|
|
if (!tr_variantDictFindInt(val, TR_KEY_complete, &seeders))
|
|
{
|
|
seeders = -1;
|
|
}
|
|
|
|
int64_t leechers;
|
|
if (!tr_variantDictFindInt(val, TR_KEY_incomplete, &leechers))
|
|
{
|
|
leechers = -1;
|
|
}
|
|
|
|
printf("%d seeders, %d leechers\n", (int)seeders, (int)leechers);
|
|
matched = true;
|
|
}
|
|
|
|
++child_pos;
|
|
}
|
|
}
|
|
|
|
tr_variantFree(&top);
|
|
}
|
|
|
|
if (!matched)
|
|
{
|
|
printf("no match\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
curl_easy_cleanup(curl);
|
|
evbuffer_free(buf);
|
|
tr_free(url);
|
|
}
|
|
}
|
|
|
|
int tr_main(int argc, char* argv[])
|
|
{
|
|
int err;
|
|
tr_info inf;
|
|
tr_ctor* ctor;
|
|
|
|
tr_logSetLevel(TR_LOG_ERROR);
|
|
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);
|
|
|
|
if (parseCommandLine(argc, (char const* const*)argv) != 0)
|
|
{
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (showVersion)
|
|
{
|
|
fprintf(stderr, MY_NAME " " LONG_VERSION_STRING "\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
/* make sure the user specified a filename */
|
|
if (filename == nullptr)
|
|
{
|
|
fprintf(stderr, "ERROR: No .torrent file specified.\n");
|
|
tr_getopt_usage(MY_NAME, getUsage(), options);
|
|
fprintf(stderr, "\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/* try to parse the .torrent file */
|
|
ctor = tr_ctorNew(nullptr);
|
|
tr_ctorSetMetainfoFromFile(ctor, filename);
|
|
err = tr_torrentParse(ctor, &inf);
|
|
tr_ctorFree(ctor);
|
|
|
|
if (err != TR_PARSE_OK)
|
|
{
|
|
fprintf(stderr, "Error parsing .torrent file \"%s\"\n", filename);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (magnetFlag)
|
|
{
|
|
doShowMagnet(&inf);
|
|
}
|
|
else
|
|
{
|
|
printf("Name: %s\n", inf.name);
|
|
printf("File: %s\n", filename);
|
|
printf("\n");
|
|
fflush(stdout);
|
|
|
|
if (scrapeFlag)
|
|
{
|
|
doScrape(&inf);
|
|
}
|
|
else
|
|
{
|
|
showInfo(&inf);
|
|
}
|
|
}
|
|
|
|
/* cleanup */
|
|
putc('\n', stdout);
|
|
tr_metainfoFree(&inf);
|
|
return EXIT_SUCCESS;
|
|
}
|