2 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "file-download.h"
22 #include <dali/integration-api/debug.h>
23 #include <curl/curl.h>
26 #include "portable/file-closer.h"
28 #ifdef TPK_CURL_ENABLED
29 #include <tpkp_curl.h>
30 #endif // TPK_CURL_ENABLED
32 using namespace Dali::Integration;
37 namespace TizenPlatform
40 namespace // unnamed namespace
43 const int CONNECTION_TIMEOUT_SECONDS( 30L );
44 const long VERBOSE_MODE = 0L; // 0 == off, 1 == on
45 const long CLOSE_CONNECTION_ON_ERROR = 1L; // 0 == off, 1 == on
46 const long EXCLUDE_HEADER = 0L;
47 const long INCLUDE_HEADER = 1L;
48 const long INCLUDE_BODY = 0L;
49 const long EXCLUDE_BODY = 1L;
52 * Curl library environment. Direct initialize ensures it's constructed before adaptor
53 * or application creates any threads.
55 static Dali::TizenPlatform::Network::CurlEnvironment gCurlEnvironment;
58 void ConfigureCurlOptions( CURL* curl_handle, const std::string& url )
60 curl_easy_setopt( curl_handle, CURLOPT_URL, url.c_str() );
61 curl_easy_setopt( curl_handle, CURLOPT_VERBOSE, VERBOSE_MODE );
63 // CURLOPT_FAILONERROR is not fail-safe especially when authentication is involved ( see manual )
64 curl_easy_setopt( curl_handle, CURLOPT_FAILONERROR, CLOSE_CONNECTION_ON_ERROR );
65 curl_easy_setopt( curl_handle, CURLOPT_CONNECTTIMEOUT, CONNECTION_TIMEOUT_SECONDS );
66 curl_easy_setopt( curl_handle, CURLOPT_HEADER, INCLUDE_HEADER );
67 curl_easy_setopt( curl_handle, CURLOPT_NOBODY, EXCLUDE_BODY );
69 #ifdef TPK_CURL_ENABLED
70 // Apply certificate pinning on Tizen
71 curl_easy_setopt( curl_handle, CURLOPT_SSL_CTX_FUNCTION, tpkp_curl_ssl_ctx_callback );
72 #endif // TPK_CURL_ENABLED
75 // Without a write function or a buffer (file descriptor) to write to, curl will pump out
76 // header/body contents to stdout
77 size_t DummyWrite(char *ptr, size_t size, size_t nmemb, void *userdata)
83 bool DownloadFile( CURL* curl_handle,
84 const std::string& url,
85 Dali::Vector<uint8_t>& dataBuffer,
87 size_t maximumAllowedSizeBytes )
89 CURLcode res( CURLE_OK );
92 // setup curl to download just the header so we can extract the content length
93 ConfigureCurlOptions( curl_handle, url );
95 curl_easy_setopt( curl_handle, CURLOPT_WRITEFUNCTION, DummyWrite);
97 // perform the request to get the header
98 res = curl_easy_perform( curl_handle );
102 DALI_LOG_WARNING( "Failed to download http header for \"%s\" with error code %d\n", url.c_str(), res );
106 // get the content length, -1 == size is not known
107 curl_easy_getinfo( curl_handle,CURLINFO_CONTENT_LENGTH_DOWNLOAD , &size );
111 DALI_LOG_WARNING( "Header missing content length \"%s\" \n", url.c_str() );
114 if( size >= maximumAllowedSizeBytes )
116 DALI_LOG_WARNING( "File content length %f > max allowed %zu \"%s\" \n", size, maximumAllowedSizeBytes, url.c_str() );
120 dataSize = static_cast<size_t>( size );
122 dataBuffer.Resize( dataSize );
125 Dali::Internal::Platform::FileCloser fileCloser( static_cast<void*>(&dataBuffer[0]), dataSize, "wb" );
126 FILE* dataBufferFilePointer = fileCloser.GetFile();
127 if( NULL != dataBufferFilePointer )
129 // we only want the body which contains the file data
130 curl_easy_setopt( curl_handle, CURLOPT_HEADER, EXCLUDE_HEADER );
131 curl_easy_setopt( curl_handle, CURLOPT_NOBODY, INCLUDE_BODY );
133 // disable the write callback, and get curl to write directly into our data buffer
134 curl_easy_setopt( curl_handle, CURLOPT_WRITEFUNCTION, NULL );
135 curl_easy_setopt( curl_handle, CURLOPT_WRITEDATA, dataBufferFilePointer );
137 // synchronous request of the body data
138 res = curl_easy_perform( curl_handle );
140 if( CURLE_OK != res )
142 DALI_LOG_WARNING( "Failed to download image file \"%s\" with error code %d\n", url.c_str(), res );
150 } // unnamed namespace
156 CurlEnvironment::CurlEnvironment()
158 // Must be called before we attempt any loads. e.g. by using curl_easy_init()
159 // and before we start any threads.
160 curl_global_init(CURL_GLOBAL_ALL);
163 CurlEnvironment::~CurlEnvironment()
165 curl_global_cleanup();
169 bool DownloadRemoteFileIntoMemory( const std::string& url,
170 Dali::Vector<uint8_t>& dataBuffer,
172 size_t maximumAllowedSizeBytes )
176 DALI_LOG_WARNING("empty url requested \n");
180 // start a libcurl easy session, this internally calls curl_global_init, if we ever have more than one download
181 // thread we need to explicity call curl_global_init() on startup from a single thread.
183 CURL* curl_handle = curl_easy_init();
185 bool result = DownloadFile( curl_handle, url, dataBuffer, dataSize, maximumAllowedSizeBytes);
188 curl_easy_cleanup( curl_handle );
190 #ifdef TPK_CURL_ENABLED
191 // Clean up tpkp(the module for certificate pinning) resources on Tizen
193 #endif // TPK_CURL_ENABLED
198 } // namespace Network
200 } // namespace TizenPlatform