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Fix verifying incomplete DLC CIAs. (#76)

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This commit is contained in:
Steven Smith
2018-10-17 05:08:29 -07:00
committed by profi200
parent b941838adb
commit 7b0a7bfaab
1 changed files with 25 additions and 20 deletions
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ctrtool/cia.c
+25 -20
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@@ -251,6 +251,7 @@ clean:
void cia_verify_contents(cia_context *ctx, u32 actions)
{
u16 contentflags;
u16 contentindex;
ctr_tmd_body *body;
ctr_tmd_contentchunk *chunk;
u8 *verify_buf;
@@ -264,30 +265,34 @@ void cia_verify_contents(cia_context *ctx, u32 actions)
fseeko64(ctx->file, ctx->offset + ctx->offsetcontent, SEEK_SET);
for(i = 0; i < getbe16(body->contentcount); i++)
{
content_size = getbe64(chunk->size) & 0xffffffff;
contentindex = getbe16(chunk->index);
contentflags = getbe16(chunk->type);
verify_buf = malloc(content_size);
fread(verify_buf, content_size, 1, ctx->file);
if(contentflags & 1 && !(actions & PlainFlag)) // Decrypt if needed
if(ctx->header.contentindex[contentindex >> 3] & (0x80 >> (contentindex & 7)))
{
ctx->iv[0] = (getbe16(chunk->index) >> 8) & 0xff;
ctx->iv[1] = getbe16(chunk->index) & 0xff;
content_size = getbe64(chunk->size) & 0xffffffff;
ctr_init_cbc_decrypt(&ctx->aes, ctx->titlekey, ctx->iv);
ctr_decrypt_cbc(&ctx->aes, verify_buf, verify_buf, content_size);
contentflags = getbe16(chunk->type);
verify_buf = malloc(content_size);
fread(verify_buf, content_size, 1, ctx->file);
if(contentflags & 1 && !(actions & PlainFlag)) // Decrypt if needed
{
ctx->iv[0] = (contentindex >> 8) & 0xff;
ctx->iv[1] = contentindex & 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;
else
ctx->tmd.content_hash_stat[i] = 2;
free(verify_buf);
}
if (ctr_sha_256_verify(verify_buf, content_size, chunk->hash) == Good)
ctx->tmd.content_hash_stat[i] = 1;
else
ctx->tmd.content_hash_stat[i] = 2;
free(verify_buf);
chunk++;
}
}