mirror of
https://github.com/vgmstream/vgmstream.git
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114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "ogg_vorbis_streamfile.h"
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#include "encrypted_bgm_streamfile.h"
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//todo fuse ogg encryptions and use generic names
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static const uint8_t tpf_key[] = {
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0x0a,0x2b,0x36,0x6f,0x0b,0x0a,0x2b,0x36,0x6f,0x0B
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};
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static void load_key(ogg_vorbis_io_config_data* cfg, const uint8_t* key, size_t size) {
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cfg->is_encrypted = 1;
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cfg->key_len = size;
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memcpy(cfg->key, key, size);
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}
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/* parser for various encrypted games */
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VGMSTREAM* init_vgmstream_encrypted(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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STREAMFILE* temp_sf = NULL;
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ogg_vorbis_io_config_data cfg = {0};
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uint32_t id;
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/* checks */
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id = read_u32be(0x00, sf);
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if (check_extensions(sf,"ogg,logg")) {
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/* The Pirate's Fate (PC) */
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if (id == 0x454C513C) { /* "OggS" xored */
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load_key(&cfg, tpf_key, sizeof(tpf_key));
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}
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else {
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goto fail;
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}
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temp_sf = setup_ogg_vorbis_streamfile(sf, &cfg);
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if (!temp_sf) goto fail;
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vgmstream = init_vgmstream_ogg_vorbis(temp_sf);
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close_streamfile(temp_sf);
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return vgmstream;
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}
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if (check_extensions(sf,"mp3")) {
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/* The Pirate's Fate (PC) */
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if ((id & 0xFFFFFF00) == 0x436F0500) { /* "ID3\0" xored */
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load_key(&cfg, tpf_key, sizeof(tpf_key));
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}
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else {
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goto fail;
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}
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temp_sf = setup_ogg_vorbis_streamfile(sf, &cfg);
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if (!temp_sf) goto fail;
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#ifdef VGM_USE_FFMPEG //TODO: allow MP3 without FFmpeg
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vgmstream = init_vgmstream_ffmpeg(temp_sf);
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#endif
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close_streamfile(temp_sf);
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return vgmstream;
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}
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if (check_extensions(sf,"wav,lwav")) {
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/* The Pirate's Fate (PC) */
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if (id == 0x58627029) { /* "RIFF" xored */
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load_key(&cfg, tpf_key, sizeof(tpf_key));
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}
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else {
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goto fail;
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}
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temp_sf = setup_ogg_vorbis_streamfile(sf, &cfg);
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if (!temp_sf) goto fail;
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vgmstream = init_vgmstream_riff(temp_sf);
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close_streamfile(temp_sf);
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return vgmstream;
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}
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if (check_extensions(sf,"bgm,mse,koe")) {
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/* Studio Ring games [Nanami to Konomi no Oshiete ABC (PC), Oyatsu no Jikan (PC)]
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* .bgm: BGM, .mse: SE, .koe: Voice */
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uint8_t keybuf[0x100];
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size_t key_size;
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off_t start;
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if (id != get_id32be("RIFF"))
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goto fail;
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/* Standard RIFF xor'd past "data", sometimes including extra chunks like JUNK or smpl.
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* If .bgm is added to riff.c this needs to be reworked so detection goes first, or bgm+bgmkey is
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* rejected in riff.c (most files are rejected due to the xor'd extra chunks though). */
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key_size = read_key_file(keybuf, sizeof(keybuf), sf);
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if (key_size <= 0) goto fail;
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if (!find_chunk_le(sf, get_id32be("data"), 0x0c, 0, &start, NULL))
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goto fail;
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temp_sf = setup_bgm_streamfile(sf, start, keybuf, key_size);
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if (!temp_sf) goto fail;
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vgmstream = init_vgmstream_riff(temp_sf);
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close_streamfile(temp_sf);
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return vgmstream;
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}
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fail:
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return NULL;
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}
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