85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
#include "meta.h"
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#include "fsb_keys.h"
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#include "fsb_encrypted_streamfile.h"
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/* fully encrypted FSBs */
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VGMSTREAM* init_vgmstream_fsb_encrypted(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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/* ignore non-encrypted FSB */
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if ((read_u32be(0x00,sf) & 0xFFFFFF00) == get_id32be("FSB\0"))
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goto fail;
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/* checks */
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/* .fsb: standard
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* .fsb.xen: various Guitar Hero (X360/PC) */
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if (!check_extensions(sf, "fsb,xen"))
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goto fail;
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/* try fsbkey + all combinations of FSB4/5 and decryption algorithms */
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{
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STREAMFILE* temp_sf = NULL;
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uint8_t key[FSB_KEY_MAX];
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size_t key_size = read_key_file(key, FSB_KEY_MAX, sf);
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if (key_size) {
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{
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temp_sf = setup_fsb_streamfile(sf, key,key_size, 0);
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if (!temp_sf) goto fail;
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if (!vgmstream) vgmstream = init_vgmstream_fsb(temp_sf);
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if (!vgmstream) vgmstream = init_vgmstream_fsb5(temp_sf);
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close_streamfile(temp_sf);
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}
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if (!vgmstream) {
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temp_sf = setup_fsb_streamfile(sf, key,key_size, 1);
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if (!temp_sf) goto fail;
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if (!vgmstream) vgmstream = init_vgmstream_fsb(temp_sf);
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if (!vgmstream) vgmstream = init_vgmstream_fsb5(temp_sf);
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close_streamfile(temp_sf);
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}
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}
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}
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/* try all keys until one works */
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if (!vgmstream) {
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int i;
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STREAMFILE* temp_sf = NULL;
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for (i = 0; i < fsbkey_list_count; i++) {
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fsbkey_info entry = fsbkey_list[i];
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//;VGM_LOG("fsbkey: size=%i, is_fsb5=%i, is_alt=%i\n", entry.fsbkey_size,entry.is_fsb5, entry.is_alt);
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temp_sf = setup_fsb_streamfile(sf, entry.fsbkey, entry.fsbkey_size, entry.is_alt);
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if (!temp_sf) goto fail;
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if (fsbkey_list[i].is_fsb5) {
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vgmstream = init_vgmstream_fsb5(temp_sf);
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} else {
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vgmstream = init_vgmstream_fsb(temp_sf);
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}
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//;if (vgmstream) dump_streamfile(temp_sf, 0);
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close_streamfile(temp_sf);
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if (vgmstream) break;
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}
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}
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if (!vgmstream)
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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