From a464b7624cf66bb2300c5eefe0a2fff03cc9ddd1 Mon Sep 17 00:00:00 2001
From: bnnm <bananaman255@gmail.com>
Date: Sun, 5 Apr 2020 22:36:08 +0200
Subject: [PATCH] Add some encrypted files [The Pirate's Fate (PC)]

---
 src/libvgmstream.vcproj          |  4 ++
 src/libvgmstream.vcxproj         |  1 +
 src/libvgmstream.vcxproj.filters |  3 ++
 src/meta/encrypted.c             | 83 ++++++++++++++++++++++++++++++++
 src/meta/meta.h                  |  2 +
 src/vgmstream.c                  |  1 +
 6 files changed, 94 insertions(+)
 create mode 100644 src/meta/encrypted.c

diff --git a/src/libvgmstream.vcproj b/src/libvgmstream.vcproj
index fb2b2030..9b1c8de5 100644
--- a/src/libvgmstream.vcproj
+++ b/src/libvgmstream.vcproj
@@ -667,6 +667,10 @@
                 <File
                     RelativePath=".\meta\ea_wve_ad10.c"
                     >
+                </File>
+                <File
+                    RelativePath=".\meta\encrypted.c"
+                    >
                 </File>
 				<File
 					RelativePath=".\meta\mul.c"
diff --git a/src/libvgmstream.vcxproj b/src/libvgmstream.vcxproj
index 2724dc54..91397b1e 100644
--- a/src/libvgmstream.vcxproj
+++ b/src/libvgmstream.vcxproj
@@ -311,6 +311,7 @@
     <ClCompile Include="meta\ea_eaac.c" />
     <ClCompile Include="meta\ea_wve_au00.c" />
     <ClCompile Include="meta\ea_wve_ad10.c" />
+    <ClCompile Include="meta\encrypted.c" />
     <ClCompile Include="meta\mul.c" />
     <ClCompile Include="meta\exakt_sc.c" />
     <ClCompile Include="meta\ffw.c" />
diff --git a/src/libvgmstream.vcxproj.filters b/src/libvgmstream.vcxproj.filters
index ffcad061..f75204d9 100644
--- a/src/libvgmstream.vcxproj.filters
+++ b/src/libvgmstream.vcxproj.filters
@@ -451,6 +451,9 @@
     <ClCompile Include="meta\ea_wve_ad10.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="meta\encrypted.c">
+      <Filter>meta\Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="meta\mul.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>
diff --git a/src/meta/encrypted.c b/src/meta/encrypted.c
new file mode 100644
index 00000000..0de62161
--- /dev/null
+++ b/src/meta/encrypted.c
@@ -0,0 +1,83 @@
+#include "meta.h"
+#include "../coding/coding.h"
+#include "ogg_vorbis_streamfile.h"
+
+//todo fuse ogg encryptions and use generic names
+
+
+static const uint8_t tpf_key[] = {
+        0x0a,0x2b,0x36,0x6f,0x0b,0x0a,0x2b,0x36,0x6f,0x0B
+};
+
+static void load_key(ogg_vorbis_io_config_data* cfg, const uint8_t* key, size_t size) {
+    cfg->is_encrypted = 1;
+    cfg->key_len = size;
+    memcpy(cfg->key, key, size);
+}
+
+/* parser for various encrypted games */
+VGMSTREAM* init_vgmstream_encrypted(STREAMFILE* sf) {
+    VGMSTREAM* vgmstream = NULL;
+    STREAMFILE* temp_sf = NULL;
+    ogg_vorbis_io_config_data cfg = {0};
+    uint32_t id;
+
+
+    /* checks */
+    id = read_u32be(0x00, sf);
+
+    if (check_extensions(sf,"ogg,logg")) {
+        /* The Pirate's Fate (PC) */
+        if (id == 0x454C513C) { /* "OggS" xored */
+            load_key(&cfg, tpf_key, sizeof(tpf_key));
+        }
+        else {
+            goto fail;
+        }
+
+        temp_sf = setup_ogg_vorbis_streamfile(sf, cfg);
+        if (!temp_sf) goto fail;
+        VGM_LOG("2\n");
+        vgmstream = init_vgmstream_ogg_vorbis(temp_sf);
+        close_streamfile(temp_sf);
+        return vgmstream;
+    }
+
+    if (check_extensions(sf,"mp3")) {
+        /* The Pirate's Fate (PC) */
+        if ((id & 0xFFFFFF00) == 0x436F0500) { /* "ID3\0" xored */
+            load_key(&cfg, tpf_key, sizeof(tpf_key));
+        }
+        else {
+            goto fail;
+        }
+
+        temp_sf = setup_ogg_vorbis_streamfile(sf, cfg);
+        if (!temp_sf) goto fail;
+
+        vgmstream = init_vgmstream_ffmpeg(temp_sf);
+        close_streamfile(temp_sf);
+        return vgmstream;
+    }
+
+    if (check_extensions(sf,"wav,lwav")) {
+        /* The Pirate's Fate (PC) */
+        if (id == 0x58627029) { /* "RIFF" xored */
+            load_key(&cfg, tpf_key, sizeof(tpf_key));
+        }
+        else {
+            goto fail;
+        }
+
+        temp_sf = setup_ogg_vorbis_streamfile(sf, cfg);
+        if (!temp_sf) goto fail;
+
+        vgmstream = init_vgmstream_riff(temp_sf);
+        close_streamfile(temp_sf);
+        return vgmstream;
+    }
+
+
+fail:
+    return NULL;
+}
diff --git a/src/meta/meta.h b/src/meta/meta.h
index 2b4e9f78..2a88778d 100644
--- a/src/meta/meta.h
+++ b/src/meta/meta.h
@@ -891,4 +891,6 @@ VGMSTREAM * init_vgmstream_lrmd(STREAMFILE* sf);
 VGMSTREAM* init_vgmstream_bkhd(STREAMFILE* sf);
 VGMSTREAM* init_vgmstream_bkhd_fx(STREAMFILE* sf);
 
+VGMSTREAM* init_vgmstream_encrypted(STREAMFILE* sf);
+
 #endif /*_META_H*/
diff --git a/src/vgmstream.c b/src/vgmstream.c
index 326a6bae..455ea347 100644
--- a/src/vgmstream.c
+++ b/src/vgmstream.c
@@ -495,6 +495,7 @@ VGMSTREAM * (*init_vgmstream_functions[])(STREAMFILE *streamFile) = {
 
     /* lowest priority metas (should go after all metas, and TXTH should go before raw formats) */
     init_vgmstream_txth,            /* proper parsers should supersede TXTH, once added */
+    init_vgmstream_encrypted,       /* encrypted stuff */
     init_vgmstream_raw_int,         /* .int raw PCM */
     init_vgmstream_ps_headerless,   /* tries to detect a bunch of PS-ADPCM formats */
     init_vgmstream_raw_snds,        /* .snds raw SNDS IMA (*after* ps_headerless) */