transmission/utils/create.cc

263 lines
6.6 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 <stdlib.h> /* strtoul(), EXIT_FAILURE */
#include <inttypes.h> /* PRIu32 */
#include <libtransmission/transmission.h>
#include <libtransmission/error.h>
#include <libtransmission/file.h>
#include <libtransmission/makemeta.h>
#include <libtransmission/tr-getopt.h>
#include <libtransmission/utils.h>
#include <libtransmission/version.h>
#include "units.h"
#define MY_NAME "transmission-create"
#define MAX_TRACKERS 128
static uint32_t const KiB = 1024;
static tr_tracker_info trackers[MAX_TRACKERS];
static int trackerCount = 0;
static bool isPrivate = false;
static bool showVersion = false;
static char const* comment = nullptr;
static char const* outfile = nullptr;
static char const* infile = nullptr;
static uint32_t piecesize_kib = 0;
static tr_option options[] = {
{ 'p', "private", "Allow this torrent to only be used with the specified tracker(s)", "p", false, nullptr },
{ 'o', "outfile", "Save the generated .torrent to this filename", "o", true, "<file>" },
{ 's', "piecesize", "Set how many KiB each piece should be, overriding the preferred default", "s", true, "<size in KiB>" },
{ 'c', "comment", "Add a comment", "c", true, "<comment>" },
{ 't', "tracker", "Add a tracker's announce URL", "t", true, "<url>" },
{ '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] <file|directory>";
}
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 'V':
showVersion = true;
break;
case 'p':
isPrivate = true;
break;
case 'o':
outfile = optarg;
break;
case 'c':
comment = optarg;
break;
case 't':
if (trackerCount + 1 < MAX_TRACKERS)
{
trackers[trackerCount].tier = trackerCount;
trackers[trackerCount].announce = (char*)optarg;
++trackerCount;
}
break;
case 's':
if (optarg != nullptr)
{
char* endptr = nullptr;
piecesize_kib = strtoul(optarg, &endptr, 10);
if (endptr != nullptr && *endptr == 'M')
{
piecesize_kib *= KiB;
}
}
break;
case TR_OPT_UNK:
infile = optarg;
break;
default:
return 1;
}
}
return 0;
}
static char* tr_getcwd(void)
{
char* result;
tr_error* error = nullptr;
result = tr_sys_dir_get_current(&error);
if (result == nullptr)
{
fprintf(stderr, "getcwd error: \"%s\"", error->message);
tr_error_free(error);
result = tr_strdup("");
}
return result;
}
int tr_main(int argc, char* argv[])
{
char* out2 = nullptr;
tr_metainfo_builder* b = nullptr;
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;
}
if (infile == nullptr)
{
fprintf(stderr, "ERROR: No input file or directory specified.\n");
tr_getopt_usage(MY_NAME, getUsage(), options);
fprintf(stderr, "\n");
return EXIT_FAILURE;
}
if (outfile == nullptr)
{
tr_error* error = nullptr;
char* base = tr_sys_path_basename(infile, &error);
if (base == nullptr)
{
fprintf(stderr, "ERROR: Cannot deduce output path from input path: %s\n", error->message);
return EXIT_FAILURE;
}
char* end = tr_strdup_printf("%s.torrent", base);
char* cwd = tr_getcwd();
outfile = out2 = tr_buildPath(cwd, end, nullptr);
tr_free(cwd);
tr_free(end);
tr_free(base);
}
if (trackerCount == 0)
{
if (isPrivate)
{
fprintf(stderr, "ERROR: no trackers specified for a private torrent\n");
return EXIT_FAILURE;
}
else
{
printf("WARNING: no trackers specified\n");
}
}
printf("Creating torrent \"%s\"\n", outfile);
b = tr_metaInfoBuilderCreate(infile);
if (b == nullptr)
{
fprintf(stderr, "ERROR: Cannot find specified input file or directory.\n");
return EXIT_FAILURE;
}
if (piecesize_kib != 0)
{
tr_metaInfoBuilderSetPieceSize(b, piecesize_kib * KiB);
}
char buf[128];
printf(
b->fileCount > 1 ? " %" PRIu32 " files, %s\n" : " %" PRIu32 " file, %s\n",
b->fileCount,
tr_formatter_size_B(buf, b->totalSize, sizeof(buf)));
printf(
b->pieceCount > 1 ? " %" PRIu32 " pieces, %s each\n" : " %" PRIu32 " piece, %s\n",
b->pieceCount,
tr_formatter_size_B(buf, b->pieceSize, sizeof(buf)));
tr_makeMetaInfo(b, outfile, trackers, trackerCount, comment, isPrivate);
uint32_t last = UINT32_MAX;
while (!b->isDone)
{
tr_wait_msec(500);
uint32_t current = b->pieceIndex;
if (current != last)
{
printf("\rPiece %" PRIu32 "/%" PRIu32 " ...", current, b->pieceCount);
fflush(stdout);
last = current;
}
}
putc(' ', stdout);
switch (b->result)
{
case TR_MAKEMETA_OK:
printf("done!");
break;
case TR_MAKEMETA_URL:
printf("bad announce URL: \"%s\"", b->errfile);
break;
case TR_MAKEMETA_IO_READ:
printf("error reading \"%s\": %s", b->errfile, tr_strerror(b->my_errno));
break;
case TR_MAKEMETA_IO_WRITE:
printf("error writing \"%s\": %s", b->errfile, tr_strerror(b->my_errno));
break;
case TR_MAKEMETA_CANCELLED:
printf("cancelled");
break;
}
putc('\n', stdout);
tr_metaInfoBuilderFree(b);
tr_free(out2);
return EXIT_SUCCESS;
}