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ctrtool: updated cia code

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now supports plaintext cia content, and the plaintext flag works with
cia content.
This commit is contained in:
3DSGuy
2014-04-14 12:36:31 +08:00
parent 7dbb107a81
commit 00a2d35e12
3 changed files with 28 additions and 13 deletions
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ctrtool/cia.c
+25 -12
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@@ -40,6 +40,8 @@ void cia_save(cia_context* ctx, u32 type, u32 flags)
{
u32 offset;
u32 size;
u16 contentflags;
u8 docrypto;
filepath* path = 0;
ctr_tmd_body *body;
ctr_tmd_contentchunk *chunk;
@@ -101,16 +103,21 @@ void cia_save(cia_context* ctx, u32 type, u32 flags)
for(i = 0; i < getbe16(body->contentcount); i++) {
sprintf(tmpname, "%s.%04x.%08x", path->pathname, getbe16(chunk->index), getbe32(chunk->id));
fprintf(stdout, "Saving content #%04x to %s\n", getbe16(chunk->index), tmpname);
contentflags = getbe16(chunk->type);
docrypto = contentflags & 1 && !(flags & PlainFlag);
ctx->iv[0] = (getbe16(chunk->index) >> 8) & 0xff;
ctx->iv[1] = getbe16(chunk->index) & 0xff;
if(docrypto) // Decrypt if needed
{
ctx->iv[0] = (getbe16(chunk->index) >> 8) & 0xff;
ctx->iv[1] = getbe16(chunk->index) & 0xff;
ctr_init_cbc_decrypt(&ctx->aes, ctx->titlekey, ctx->iv);
ctr_init_cbc_decrypt(&ctx->aes, ctx->titlekey, ctx->iv);
}
cia_save_blob(ctx, tmpname, offset, getbe64(chunk->size) & 0xffffffff, 1);
cia_save_blob(ctx, tmpname, offset, getbe64(chunk->size) & 0xffffffff, docrypto);
offset += getbe64(chunk->size) & 0xffffffff;
chunk++;
}
@@ -218,7 +225,7 @@ void cia_process(cia_context* ctx, u32 actions)
if (actions & VerifyFlag)
{
cia_verify_contents(ctx);
cia_verify_contents(ctx, actions);
}
if (actions & InfoFlag || actions & VerifyFlag)
@@ -237,8 +244,9 @@ clean:
return;
}
void cia_verify_contents(cia_context *ctx)
void cia_verify_contents(cia_context *ctx, u32 actions)
{
u16 contentflags;
ctr_tmd_body *body;
ctr_tmd_contentchunk *chunk;
u8 *verify_buf;
@@ -254,15 +262,20 @@ void cia_verify_contents(cia_context *ctx)
{
content_size = getbe64(chunk->size) & 0xffffffff;
ctx->iv[0] = (getbe16(chunk->index) >> 8) & 0xff;
ctx->iv[1] = getbe16(chunk->index) & 0xff;
ctr_init_cbc_decrypt(&ctx->aes, ctx->titlekey, ctx->iv);
contentflags = getbe16(chunk->type);
verify_buf = malloc(content_size);
fread(verify_buf, content_size, 1, ctx->file);
ctr_decrypt_cbc(&ctx->aes, verify_buf, verify_buf, content_size);
if(contentflags & 1 && !(actions & PlainFlag)) // Decrypt if needed
{
ctx->iv[0] = (getbe16(chunk->index) >> 8) & 0xff;
ctx->iv[1] = getbe16(chunk->index) & 0xff;
ctr_init_cbc_decrypt(&ctx->aes, ctx->titlekey, ctx->iv);
ctr_decrypt_cbc(&ctx->aes, verify_buf, verify_buf, content_size);
}
if (ctr_sha_256_verify(verify_buf, content_size, chunk->hash) == Good)
ctx->tmd.content_hash_stat[i] = 1;