/*---------------------------------------------------------------------- | 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; }