/*----------------------------------------------------------------------
| DcfParser_ParseV1Header
+---------------------------------------------------------------------*/
static BLT_Result
DcfParser_ParseV1Header(DcfParser* self, ATX_InputStream* stream)
{
/* rewind the byte stream */
ATX_InputStream_Seek(stream, 0);
/* user a buffer for parsing */
ATX_UInt8 buffer[3];
/* read the first 3 fields */
ATX_Result result;
result = ATX_InputStream_ReadFully(stream, buffer, 3);
if (ATX_FAILED(result)) return result;
/* check the version */
ATX_UInt8 version = buffer[0];
if (version != 1) {
ATX_LOG_FINE_1("unsupported DCF version (%d)", version);
return BLT_ERROR_UNSUPPORTED_FORMAT;
}
/* read the content type */
ATX_UInt8 content_type_length = buffer[1];
self->input.content_type[content_type_length] = 0; // null-terminate
result = ATX_InputStream_ReadFully(stream, self->input.content_type, content_type_length);
if (ATX_FAILED(result)) return result;
/* read the content URI */
ATX_UInt8 content_uri_length = buffer[2];
self->input.content_uri[content_uri_length] = 0; // null-terminate
result = ATX_InputStream_ReadFully(stream, self->input.content_uri, content_uri_length);
if (ATX_FAILED(result)) return result;
/* read the variable-length fields */
unsigned int var_length_1, var_length_2;
ATX_UInt32 headers_length = 0;
result = DcfParser_ReadUintvar(stream, headers_length, var_length_1);
if (ATX_FAILED(result)) return result;
ATX_UInt32 data_length = 0;
result = DcfParser_ReadUintvar(stream, data_length, var_length_2);
if (ATX_FAILED(result)) return result;
/* check that the encrypted size makes sense */
if (data_length < 32) return BLT_ERROR_INVALID_MEDIA_FORMAT;
self->input.encrypted_size = data_length;
/* get the content key */
NPT_DataBuffer key;
result = DcfParser_GetContentKey(self, self->input.content_uri, key);
if (BLT_FAILED(result)) {
ATX_LOG_FINE_2("GetKeyForContent(%s) returned %d",
self->input.content_uri,
result);
return BLT_ERROR_NO_MEDIA_KEY;
}
/* read the headers */
if (headers_length > BLT_DCF_PARSER_MAX_HEADERS_LENGTH) return BLT_ERROR_INVALID_MEDIA_FORMAT;
char* headers = new char[headers_length+1];
headers[headers_length] = '\0';
result = ATX_InputStream_ReadFully(stream, headers, headers_length);
if (ATX_FAILED(result)) {
delete[] headers;
return result;
}
/* as a first-order estimate, set the output size to the encrypted size minus the IV */
self->output.size = self->input.encrypted_size-16;
/* parse the headers */
NPT_MemoryStream* headers_memory_stream = new NPT_MemoryStream(headers, headers_length);
NPT_InputStreamReference headers_memory_stream_ref(headers_memory_stream);
NPT_BufferedInputStream* headers_buffered_stream =
new NPT_BufferedInputStream(headers_memory_stream_ref);
NPT_HttpHeaders content_headers;
content_headers.Parse(*headers_buffered_stream);
delete headers_buffered_stream;
delete[] headers;
/* find out about the encryption from the headers */
const NPT_String* encryption_method = content_headers.GetHeaderValue("Encryption-Method");
if (encryption_method == NULL) return BLT_ERROR_INVALID_MEDIA_FORMAT;
/* check the encryption method */
bool encryption_supported = false;
NPT_Map<NPT_String,NPT_String> encryption_params;
NPT_Size algorithm_id_length = 0;
/* parse the algorithm id */
int separator = encryption_method->Find(';', 0, true);
if (separator > 0) {
algorithm_id_length = separator;
/* parse the params */
result = NPT_ParseMimeParameters(((const char*)(*encryption_method))+separator+1,
encryption_params);
if (NPT_FAILED(result)) {
ATX_LOG_FINE_1("cannot parse Encryption-Method parameters (%s)",
(const char*)encryption_method);
return BLT_ERROR_INVALID_MEDIA_FORMAT;
}
/* parse the plaintext-length header, if present */
NPT_String* plaintext_length = NULL;
if (NPT_SUCCEEDED(encryption_params.Get("plaintext-length", plaintext_length))) {
NPT_UInt64 value = 0;
if (NPT_SUCCEEDED(plaintext_length->ToInteger64(value, true))) {
self->output.size = value;
}
}
} else {
algorithm_id_length = encryption_method->GetLength();
}
if (NPT_StringsEqualN((const char*)(*encryption_method),
BLT_DCF_PARSER_ALGORITHM_ID_AES128CBC,
algorithm_id_length)) {
encryption_supported = true;
NPT_String* padding = NULL;
if (NPT_SUCCEEDED(encryption_params.Get("padding", padding))) {
if (*padding == BLT_DCF_PARSER_PADDING_RFC2630) {
encryption_supported = false; // hmmm, unknown padding
}
}
}
if (!encryption_supported) {
ATX_LOG_FINE_1("unsupported encryption format (%s)", encryption_method);
return BLT_ERROR_UNSUPPORTED_FORMAT;
}
/* read the IV */
AP4_UI08 iv[16];
result = ATX_InputStream_ReadFully(stream, iv, sizeof(iv));
if (BLT_FAILED(result)) return result;
/* create a byte stream to represent the encrypted data */
ATX_Size header_size = 3+content_type_length+content_uri_length+var_length_1+var_length_2+headers_length;
ATX_InputStream* data_stream = NULL;
ATX_SubInputStream_Create(stream,
header_size+16, // skip the IV
self->input.encrypted_size-16,
NULL,
&data_stream);
ATX_InputStream_To_AP4_ByteStream_Adapter* encrypted_stream =
new ATX_InputStream_To_AP4_ByteStream_Adapter(data_stream);
ATX_RELEASE_OBJECT(data_stream);
/* create a decrypting stream for the content */ // FIXME: temporary
AP4_ByteStream* decrypting_stream = NULL;
result = AP4_DecryptingStream::Create(AP4_BlockCipher::CBC,
*encrypted_stream,
self->output.size,
iv, 16,
key.GetData(),
key.GetDataSize(),
self->cipher_factory,
decrypting_stream);
encrypted_stream->Release();
if (AP4_FAILED(result)) return result;
/* create a reverse adapter */
result = AP4_ByteStream_To_ATX_InputStream_Adapter_Create(decrypting_stream, &self->output.stream);
decrypting_stream->Release();
return BLT_SUCCESS;
}
/*----------------------------------------------------------------------
| main
+---------------------------------------------------------------------*/
int
main(int /*argc*/, char** /*argv*/)
{
NPT_Result result;
NPT_String t = "hello";
NPT_String base64;
NPT_DataBuffer data;
result = NPT_Base64::Encode((const NPT_Byte*)t.GetChars(), t.GetLength(), base64);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(base64 == "aGVsbG8=");
result = NPT_Base64::Decode(base64.GetChars(), base64.GetLength(), data);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(data.GetDataSize() == t.GetLength());
NPT_String tt((const char*)data.GetData(), data.GetDataSize());
NPT_ASSERT(tt == t);
t = "hello!";
result = NPT_Base64::Encode((const NPT_Byte*)t.GetChars(), t.GetLength(), base64);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(base64 == "aGVsbG8h");
result = NPT_Base64::Decode(base64.GetChars(), base64.GetLength(), data);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(data.GetDataSize() == t.GetLength());
tt.Assign((const char*)data.GetData(), data.GetDataSize());
NPT_ASSERT(tt == t);
t = "hello!!";
result = NPT_Base64::Encode((const NPT_Byte*)t.GetChars(), t.GetLength(), base64);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(base64 == "aGVsbG8hIQ==");
result = NPT_Base64::Decode(base64.GetChars(), base64.GetLength(), data);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(data.GetDataSize() == t.GetLength());
tt.Assign((const char*)data.GetData(), data.GetDataSize());
NPT_ASSERT(tt == t);
unsigned char r256_bin[] = {
0x7d, 0x5f, 0xd0, 0xf4, 0x6a, 0xa8, 0xae, 0x34, 0x6e, 0x32, 0x1d, 0xa1,
0xef, 0x66, 0xdd, 0x82, 0x76, 0xa6, 0xfd, 0x8c, 0x75, 0x97, 0xa0, 0x01,
0x00, 0xde, 0x52, 0xef, 0xdf, 0xb6, 0x3e, 0xe4, 0x7b, 0x45, 0xdd, 0x2b,
0xa1, 0x9c, 0xb0, 0x6d, 0x2c, 0x75, 0xb1, 0x87, 0x43, 0x0f, 0xea, 0x24,
0x36, 0x11, 0x7e, 0xee, 0xd1, 0x91, 0x7f, 0x7b, 0x02, 0xea, 0x9a, 0x2a,
0x25, 0xc0, 0xac, 0x99, 0xa4, 0x89, 0x55, 0x5b, 0x82, 0xdf, 0xb0, 0x7e,
0xa1, 0x78, 0x0f, 0xdf, 0x25, 0x5f, 0x3d, 0xba, 0xcb, 0xbc, 0x35, 0x04,
0xc3, 0xf4, 0xb8, 0xc0, 0x17, 0x8e, 0x75, 0x01, 0xe6, 0x2f, 0x88, 0x2c,
0x76, 0x0a, 0x8c, 0x3f, 0x83, 0xd4, 0x10, 0xa8, 0x00, 0xfc, 0xa0, 0x92,
0x7b, 0xae, 0xa3, 0x8c, 0x47, 0xea, 0x25, 0xf9, 0x29, 0x81, 0x1c, 0x21,
0xf2, 0xf4, 0xfe, 0x07, 0x7e, 0x4b, 0x01, 0x79, 0x41, 0x3a, 0xb6, 0x71,
0x0b, 0x75, 0xa7, 0x9d, 0x1b, 0x12, 0xc4, 0x46, 0x06, 0xf3, 0x5f, 0x00,
0x05, 0x2a, 0x1b, 0x34, 0xd6, 0x87, 0xc4, 0x70, 0xcc, 0xc3, 0x9e, 0xa8,
0x24, 0x2c, 0x97, 0x4e, 0xfc, 0x91, 0x70, 0x1c, 0x29, 0x66, 0xc3, 0x23,
0xbf, 0xd7, 0x4d, 0x35, 0x51, 0xff, 0xeb, 0xde, 0x45, 0xbd, 0x8d, 0x80,
0x44, 0x2a, 0x8d, 0xc0, 0xe8, 0x6a, 0xe2, 0x86, 0x46, 0x9f, 0xf2, 0x3c,
0x93, 0x0d, 0x27, 0x02, 0xe4, 0x79, 0xa1, 0x21, 0xf4, 0x43, 0xcd, 0x4c,
0x22, 0x25, 0x9e, 0x93, 0xeb, 0x77, 0x8e, 0x1e, 0x57, 0x1e, 0x9b, 0xcb,
0x91, 0x86, 0xcf, 0x15, 0xaf, 0xd5, 0x03, 0x0f, 0x70, 0xbe, 0x6e, 0x37,
0xea, 0x37, 0xdd, 0xf6, 0xa1, 0xb1, 0xf7, 0x05, 0xbc, 0x2d, 0x44, 0x60,
0x35, 0xa4, 0x05, 0x0b, 0x22, 0x7d, 0x7a, 0x71, 0xe5, 0x1d, 0x8e, 0xcb,
0xc3, 0xb8, 0x3a, 0xe1
};
NPT_String b64;
NPT_Base64::Encode(r256_bin, sizeof(r256_bin), b64);
NPT_DataBuffer r256_out;
NPT_Base64::Decode(b64.GetChars(), b64.GetLength(), r256_out);
NPT_ASSERT(r256_out.GetDataSize() == sizeof(r256_bin));
NPT_ASSERT(r256_bin[sizeof(r256_bin)-1] == r256_out.GetData()[sizeof(r256_bin)-1]);
unsigned char random_bytes[] = {
0xc7, 0xee, 0x49, 0x9e, 0x2c, 0x8b, 0x1c, 0x16, 0x9e, 0x7f, 0x30, 0xd0,
0xc6, 0x12, 0x30, 0x80, 0x81, 0xcd, 0x20, 0x20, 0x26, 0xaf, 0x4f, 0xd6,
0xfc, 0x86, 0x2e, 0x85, 0xf3, 0x10, 0x38, 0x2b, 0x0e, 0xbb, 0x80, 0x68,
0xbe, 0xff, 0x1c, 0xdc, 0x72, 0xb5, 0x0d, 0x8f, 0x8e, 0x6c, 0x09, 0x63,
0xba, 0x21, 0x23, 0xb2, 0x24, 0x17, 0xd3, 0x17, 0x69, 0x44, 0x77, 0x11,
0x36, 0x6a, 0x6e, 0xf2, 0x44, 0x87, 0xa1, 0xd3, 0xf3, 0x1f, 0x6c, 0x38,
0x22, 0x4a, 0x44, 0x70, 0x66, 0xef, 0x8c, 0x3a, 0x51, 0xc8, 0xee, 0x85,
0x00, 0x25, 0x93, 0x10, 0x2e, 0x0b, 0x1b, 0x03, 0x94, 0x47, 0x05, 0x22,
0xd0, 0xc4, 0xec, 0x2e, 0xcc, 0xbc, 0xbb, 0x67, 0xfd, 0xec, 0x0e, 0xb1,
0x3f, 0xbc, 0x82, 0xe0, 0xa7, 0x9c, 0xf3, 0xae, 0xbd, 0xb7, 0xab, 0x02,
0xf1, 0xd9, 0x17, 0x4c, 0x9d, 0xeb, 0xe2, 0x00, 0x1e, 0x19, 0x6e, 0xb3,
0xfd, 0x7d, 0xea, 0x49, 0x85, 0x43, 0x2f, 0x56, 0x81, 0x89, 0xba, 0x71,
0x37, 0x10, 0xb5, 0x74, 0xab, 0x90, 0x4d, 0xc4, 0xd1, 0x0d, 0x8d, 0x6f,
0x01, 0xf5, 0x2c, 0xc9, 0x1a, 0x79, 0xa1, 0x41, 0x71, 0x2b, 0xfb, 0xf3,
0xd5, 0xe4, 0x2a, 0xf5, 0xad, 0x80, 0x7a, 0x03, 0xff, 0x5f, 0x45, 0x8c,
0xec, 0x6a, 0x4b, 0x05, 0xe3, 0x65, 0x19, 0x70, 0x05, 0xad, 0xc4, 0xb8,
0x4e, 0x9e, 0x9a, 0x36, 0x4a, 0x86, 0x9d, 0xf5, 0x99, 0xcb, 0x00, 0xb8,
0xb9, 0xa7, 0x86, 0x18, 0xfc, 0x9a, 0xe7, 0x00, 0x6a, 0x67, 0xfa, 0x42,
0x9d, 0xff, 0x4d, 0x7a, 0xe4, 0xe8, 0x03, 0x88, 0xff, 0x60, 0xe1, 0x8d,
0x09, 0x5f, 0x6f, 0xde, 0x6b
};
NPT_Array<unsigned char> random(random_bytes, NPT_ARRAY_SIZE(random_bytes));
t = "x+5JniyLHBaefzDQxhIwgIHNICAmr0/W/IYuhfMQOCsOu4Bovv8c3HK1DY+ObAlj\r\n"
"uiEjsiQX0xdpRHcRNmpu8kSHodPzH2w4IkpEcGbvjDpRyO6FACWTEC4LGwOURwUi\r\n"
"0MTsLsy8u2f97A6xP7yC4Kec8669t6sC8dkXTJ3r4gAeGW6z/X3qSYVDL1aBibpx\r\n"
"NxC1dKuQTcTRDY1vAfUsyRp5oUFxK/vz1eQq9a2AegP/X0WM7GpLBeNlGXAFrcS4\r\n"
"Tp6aNkqGnfWZywC4uaeGGPya5wBqZ/pCnf9NeuToA4j/YOGNCV9v3ms=";
result = NPT_Base64::Decode(t.GetChars(), t.GetLength(), data);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(data.GetDataSize() == 233);
NPT_Array<unsigned char> verif(data.GetData(), data.GetDataSize());
NPT_ASSERT(verif == random);
result = NPT_Base64::Encode(&random[0], random.GetItemCount(), base64, NPT_BASE64_PEM_BLOCKS_PER_LINE);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(base64 == t);
NPT_String t_url = t;
t.Replace('/', '_');
t.Replace('+', '-');
result = NPT_Base64::Encode(&random[0], random.GetItemCount(), base64, NPT_BASE64_PEM_BLOCKS_PER_LINE, true);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(base64 == t);
t = "76768484767685839";
result = NPT_Base64::Decode(t.GetChars(), t.GetLength(), data);
NPT_ASSERT(result == NPT_ERROR_INVALID_FORMAT);
t = "76869=978686";
result = NPT_Base64::Decode(t.GetChars(), t.GetLength(), data);
NPT_ASSERT(result == NPT_ERROR_INVALID_FORMAT);
t = "7686=8978686";
result = NPT_Base64::Decode(t.GetChars(), t.GetLength(), data);
NPT_ASSERT(result == NPT_ERROR_INVALID_FORMAT);
t = "7686==978686";
result = NPT_Base64::Decode(t.GetChars(), t.GetLength(), data);
NPT_ASSERT(result == NPT_ERROR_INVALID_FORMAT);
// test IP address parsing
NPT_IpAddress ip;
NPT_ASSERT(NPT_FAILED(ip.Parse("")));
NPT_ASSERT(NPT_FAILED(ip.Parse("a.b.c.d")));
NPT_ASSERT(NPT_FAILED(ip.Parse("1.2.3.4.5")));
NPT_ASSERT(NPT_FAILED(ip.Parse("1")));
NPT_ASSERT(NPT_FAILED(ip.Parse("1.2.3.4.")));
NPT_ASSERT(NPT_FAILED(ip.Parse("1.2.3.4f")));
NPT_ASSERT(NPT_FAILED(ip.Parse("1.g.3.4")));
NPT_ASSERT(NPT_FAILED(ip.Parse("1.2..3.4")));
NPT_ASSERT(NPT_FAILED(ip.Parse("1.2.300.4")));
NPT_ASSERT(NPT_SUCCEEDED(ip.Parse("1.2.3.4")));
NPT_ASSERT(ip.AsBytes()[0] == 1);
NPT_ASSERT(ip.AsBytes()[1] == 2);
NPT_ASSERT(ip.AsBytes()[2] == 3);
NPT_ASSERT(ip.AsBytes()[3] == 4);
NPT_ASSERT(NPT_SUCCEEDED(ip.Parse("255.255.0.1")));
NPT_ASSERT(ip.AsBytes()[0] == 255);
NPT_ASSERT(ip.AsBytes()[1] == 255);
NPT_ASSERT(ip.AsBytes()[2] == 0);
NPT_ASSERT(ip.AsBytes()[3] == 1);
NPT_ASSERT(NPT_SUCCEEDED(ip.Parse("0.0.0.0")));
NPT_ASSERT(ip.AsBytes()[0] == 0);
NPT_ASSERT(ip.AsBytes()[1] == 0);
NPT_ASSERT(ip.AsBytes()[2] == 0);
NPT_ASSERT(ip.AsBytes()[3] == 0);
// MIME parameter parser
NPT_Map<NPT_String,NPT_String> params;
result = NPT_ParseMimeParameters(NULL, params);
NPT_ASSERT(result == NPT_ERROR_INVALID_PARAMETERS);
result = NPT_ParseMimeParameters("", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 0);
result = NPT_ParseMimeParameters("foo=bar", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 1);
NPT_ASSERT(params["foo"] == "bar");
params.Clear();
result = NPT_ParseMimeParameters(" foo =bar", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 1);
NPT_ASSERT(params["foo"] == "bar");
params.Clear();
result = NPT_ParseMimeParameters(" foo= bar", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 1);
NPT_ASSERT(params["foo"] == "bar");
params.Clear();
result = NPT_ParseMimeParameters(" foo= bar;", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 1);
NPT_ASSERT(params["foo"] == "bar");
params.Clear();
result = NPT_ParseMimeParameters("foo=\"bar\"", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 1);
NPT_ASSERT(params["foo"] == "bar");
params.Clear();
result = NPT_ParseMimeParameters("foo=\"ba\"r\"", params);
NPT_ASSERT(result == NPT_ERROR_INVALID_SYNTAX);
params.Clear();
result = NPT_ParseMimeParameters("foo=\"ba\\\"r\"", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 1);
NPT_ASSERT(params["foo"] == "ba\"r");
params.Clear();
result = NPT_ParseMimeParameters("foo=\"bar\\\"\"", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 1);
NPT_ASSERT(params["foo"] == "bar\"");
params.Clear();
result = NPT_ParseMimeParameters("foo=\"bar\\\\\"", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 1);
NPT_ASSERT(params["foo"] == "bar\\");
params.Clear();
result = NPT_ParseMimeParameters("a=1;b=2; c=3; d=4 ; e=\"\\;\"; f=\";\"", params);
NPT_ASSERT(NPT_SUCCEEDED(result));
NPT_ASSERT(params.GetEntryCount() == 6);
NPT_ASSERT(params["a"] == "1");
NPT_ASSERT(params["b"] == "2");
NPT_ASSERT(params["c"] == "3");
NPT_ASSERT(params["d"] == "4");
NPT_ASSERT(params["e"] == ";");
NPT_ASSERT(params["f"] == ";");
params.Clear();
return 0;
}
