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Add encrypted Ogg [Adventure Field 4 (PC)]

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This commit is contained in:
bnnm 2021-02-21 22:09:11 +01:00
parent a0e44bba3a
commit c72ca9eeff
1 changed files with 32 additions and 15 deletions
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47
src/meta/ogg_vorbis.c
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@ -82,6 +82,20 @@ static void rpgmvo_ogg_decryption_callback(void* ptr, size_t size, size_t nmemb,
}
}
static void at4_ogg_decryption_callback(void* ptr, size_t size, size_t nmemb, void* datasource) {
static const uint8_t af4_key[0x10] = {
0x00,0x0E,0x08,0x1E, 0x18,0x37,0x12,0x00, 0x48,0x87,0x46,0x0B, 0x9C,0x68,0xA8,0x4B
};
uint8_t *ptr8 = ptr;
size_t bytes_read = size * nmemb;
ogg_vorbis_io *io = datasource;
int i;
for (i = 0; i < bytes_read; i++) {
ptr8[i] -= af4_key[(io->offset + i) % sizeof(af4_key)];
}
}
static const uint32_t xiph_mappings[] = {
0,
@ -152,31 +166,34 @@ VGMSTREAM* init_vgmstream_ogg_vorbis(STREAMFILE* sf) {
}
if (is_ogg) {
if (read_32bitBE(0x00,sf) == 0x2c444430) { /* Psychic Software [Darkwind: War on Wheels (PC)] */
if (read_u32be(0x00,sf) == 0x2c444430) { /* Psychic Software [Darkwind: War on Wheels (PC)] */
ovmi.decryption_callback = psychic_ogg_decryption_callback;
}
else if (read_32bitBE(0x00,sf) == 0x4C325344) { /* "L2SD" instead of "OggS" [Lineage II Chronicle 4 (PC)] */
else if (read_u32be(0x00,sf) == 0x4C325344) { /* "L2SD" instead of "OggS" [Lineage II Chronicle 4 (PC)] */
cfg.is_header_swap = 1;
cfg.is_encrypted = 1;
}
else if (read_32bitBE(0x00,sf) == 0x048686C5) { /* "OggS" XOR'ed + bitswapped [Ys VIII (PC)] */
else if (read_u32be(0x00,sf) == 0x048686C5) { /* "OggS" XOR'ed + bitswapped [Ys VIII (PC)] */
cfg.key[0] = 0xF0;
cfg.key_len = 1;
cfg.is_nibble_swap = 1;
cfg.is_encrypted = 1;
}
else if (read_32bitBE(0x00,sf) == 0x00000000 && /* null instead of "OggS" [Yuppie Psycho (PC)] */
read_32bitBE(0x3a,sf) == 0x4F676753) { /* "OggS" in next page */
else if (read_u32be(0x00,sf) == 0x00000000 && /* null instead of "OggS" [Yuppie Psycho (PC)] */
read_u32be(0x3a,sf) == 0x4F676753) { /* "OggS" in next page */
cfg.is_header_swap = 1;
cfg.is_encrypted = 1;
}
else if (read_32bitBE(0x00,sf) != 0x4F676753 && /* random(?) swap instead of "OggS" [Tobi Tsukihime (PC)] */
read_32bitBE(0x3a,sf) == 0x4F676753) { /* "OggS" in next page */
else if (read_u32be(0x00,sf) != 0x4F676753 && /* random(?) swap instead of "OggS" [Tobi Tsukihime (PC)] */
read_u32be(0x3a,sf) == 0x4F676753) { /* "OggS" in next page */
cfg.is_header_swap = 1;
cfg.is_encrypted = 1;
}
else if (read_32bitBE(0x00,sf) == 0x4F676753) { /* "OggS" (standard) */
else if (read_u32be(0x00,sf) == 0x4F756F71) { /* "OggS" encrypted [Adventure Field 4 (PC)]*/
ovmi.decryption_callback = at4_ogg_decryption_callback;
}
else if (read_u32be(0x00,sf) == 0x4F676753) { /* "OggS" (standard) */
;
}
else {
@ -185,13 +202,13 @@ VGMSTREAM* init_vgmstream_ogg_vorbis(STREAMFILE* sf) {
}
if (is_um3) { /* ["Ultramarine3" (???)] */
if (read_32bitBE(0x00,sf) != 0x4f676753) { /* "OggS" (optionally encrypted) */
if (read_u32be(0x00,sf) != 0x4f676753) { /* "OggS" (optionally encrypted) */
ovmi.decryption_callback = um3_ogg_decryption_callback;
}
}
if (is_kovs) { /* Koei Tecmo PC games */
if (read_32bitBE(0x00,sf) != 0x4b4f5653) { /* "KOVS" */
if (read_u32be(0x00,sf) != 0x4b4f5653) { /* "KOVS" */
goto fail;
}
ovmi.loop_start = read_32bitLE(0x08,sf);
@ -203,7 +220,7 @@ VGMSTREAM* init_vgmstream_ogg_vorbis(STREAMFILE* sf) {
}
if (is_sngw) { /* [Capcom's MT Framework PC games] */
if (read_32bitBE(0x00,sf) != 0x4f676753) { /* "OggS" (optionally encrypted) */
if (read_u32be(0x00,sf) != 0x4f676753) { /* "OggS" (optionally encrypted) */
cfg.key_len = read_streamfile(cfg.key, 0x00, 0x04, sf);
cfg.is_header_swap = 1;
cfg.is_nibble_swap = 1;
@ -217,7 +234,7 @@ VGMSTREAM* init_vgmstream_ogg_vorbis(STREAMFILE* sf) {
const char *isl_name = NULL;
/* check various encrypted "OggS" values */
if (read_32bitBE(0x00,sf) == 0xAF678753) { /* Azure Striker Gunvolt (PC) */
if (read_u32be(0x00,sf) == 0xAF678753) { /* Azure Striker Gunvolt (PC) */
static const uint8_t isd_gv_key[16] = {
0xe0,0x00,0xe0,0x00,0xa0,0x00,0x00,0x00,0xe0,0x00,0xe0,0x80,0x40,0x40,0x40,0x00
};
@ -225,7 +242,7 @@ VGMSTREAM* init_vgmstream_ogg_vorbis(STREAMFILE* sf) {
memcpy(cfg.key, isd_gv_key, cfg.key_len);
isl_name = "GV_steam.isl";
}
else if (read_32bitBE(0x00,sf) == 0x0FE787D3) { /* Mighty Gunvolt (PC) */
else if (read_u32be(0x00,sf) == 0x0FE787D3) { /* Mighty Gunvolt (PC) */
static const uint8_t isd_mgv_key[120] = {
0x40,0x80,0xE0,0x80,0x40,0x40,0xA0,0x00,0xA0,0x40,0x00,0x80,0x00,0x40,0xA0,0x00,
0xC0,0x40,0xE0,0x00,0x60,0x40,0x80,0x00,0xA0,0x00,0xE0,0x00,0x60,0x40,0xC0,0x00,
@ -240,7 +257,7 @@ VGMSTREAM* init_vgmstream_ogg_vorbis(STREAMFILE* sf) {
memcpy(cfg.key, isd_mgv_key, cfg.key_len);
isl_name = "MGV_steam.isl";
}
else if (read_32bitBE(0x00,sf) == 0x0FA74753) { /* Blaster Master Zero (PC) */
else if (read_u32be(0x00,sf) == 0x0FA74753) { /* Blaster Master Zero (PC) */
static const uint8_t isd_bmz_key[120] = {
0x40,0xC0,0x20,0x00,0x40,0xC0,0xC0,0x00,0x00,0x80,0xE0,0x80,0x80,0x40,0x20,0x00,
0x60,0xC0,0xC0,0x00,0xA0,0x80,0x60,0x00,0x40,0x40,0x20,0x00,0x60,0x40,0xC0,0x00,
@ -374,7 +391,7 @@ VGMSTREAM* init_vgmstream_ogg_vorbis(STREAMFILE* sf) {
uint32_t xor_be;
put_32bitLE(key, (uint32_t)file_size);
xor_be = (uint32_t)get_32bitBE(key);
xor_be = get_u32be(key);
if ((read_32bitBE(0x00,sf) ^ xor_be) == 0x4F676753) { /* "OggS" */
int i;
cfg.key_len = 4;