ar_archive *ar_open_7z_archive(ar_stream *stream)
{
ar_archive *ar;
ar_archive_7z *_7z;
SRes res;
if (!ar_seek(stream, 0, SEEK_SET))
return NULL;
ar = ar_open_archive(stream, sizeof(ar_archive_7z), _7z_close, _7z_parse_entry, _7z_get_name, _7z_uncompress, NULL, 0);
if (!ar)
return NULL;
_7z = (ar_archive_7z *)ar;
CSeekStream_CreateVTable(&_7z->in_stream, stream);
LookToRead_CreateVTable(&_7z->look_stream, False);
_7z->look_stream.realStream = &_7z->in_stream.super;
LookToRead_Init(&_7z->look_stream);
#ifdef USE_7Z_CRC32
CrcGenerateTable();
#endif
SzArEx_Init(&_7z->data);
res = SzArEx_Open(&_7z->data, &_7z->look_stream.s, &gSzAlloc, &gSzAlloc);
if (res != SZ_OK) {
if (res != SZ_ERROR_NO_ARCHIVE)
warn("Invalid 7z archive (failed with error %d)", res);
free(ar);
return NULL;
}
return ar;
}
ar_archive *ar_open_rar_archive(ar_stream *stream)
{
char signature[7];
if (ar_read(stream, signature, sizeof(signature)) != sizeof(signature))
return NULL;
if (memcmp(signature, "Rar!\x1A\x07\x00", 7) != 0) {
if (memcmp(signature, "Rar!\x1A\x07\x01", 7) == 0)
warn("RAR 5 format isn't supported");
else if (memcmp(signature, "RE~^", 4) == 0)
warn("Ancient RAR format isn't supported");
else if (memcmp(signature, "MZ", 2) == 0 || memcmp(signature, "\x7F\x45LF", 4) == 0)
warn("SFX archives aren't supported");
return NULL;
}
return ar_open_archive(stream, sizeof(ar_archive_rar), rar_close, rar_parse_entry, rar_get_name, rar_get_name_w, rar_uncompress);
}
ar_archive *ar_open_tar_archive(ar_stream *stream)
{
ar_archive *ar;
ar_archive_tar *tar;
if (!ar_seek(stream, 0, SEEK_SET))
return NULL;
ar = ar_open_archive(stream, sizeof(ar_archive_tar), tar_close, tar_parse_entry, tar_get_name, tar_uncompress, NULL, 0);
if (!ar)
return NULL;
tar = (ar_archive_tar *)ar;
if (!tar_parse_header(tar) || !tar->entry.checksum) {
free(ar);
return NULL;
}
return ar;
}