1 // libjingle 2 // Copyright 2004--2010, Google Inc. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are met: 6 // 7 // 1. Redistributions of source code must retain the above copyright notice, 8 // this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright notice, 10 // this list of conditions and the following disclaimer in the documentation 11 // and/or other materials provided with the distribution. 12 // 3. The name of the author may not be used to endorse or promote products 13 // derived from this software without specific prior written permission. 14 // 15 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 16 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 17 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 18 // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 21 // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 22 // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 23 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 24 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 26 #ifndef TALK_BASE_MULTIPART_H__ 27 #define TALK_BASE_MULTIPART_H__ 28 29 #include <string> 30 #include <vector> 31 32 #include "talk/base/sigslot.h" 33 #include "talk/base/stream.h" 34 35 namespace talk_base { 36 37 /////////////////////////////////////////////////////////////////////////////// 38 // MultipartStream - Implements an RFC2046 multipart stream by concatenating 39 // the supplied parts together, and adding the correct boundaries. 40 /////////////////////////////////////////////////////////////////////////////// 41 42 class MultipartStream : public StreamInterface, public sigslot::has_slots<> { 43 public: 44 MultipartStream(const std::string& type, const std::string& boundary); 45 virtual ~MultipartStream(); 46 47 void GetContentType(std::string* content_type); 48 49 // Note: If content_disposition and/or content_type are the empty string, 50 // they will be omitted. 51 bool AddPart(StreamInterface* data_stream, 52 const std::string& content_disposition, 53 const std::string& content_type); 54 bool AddPart(const std::string& data, 55 const std::string& content_disposition, 56 const std::string& content_type); 57 void EndParts(); 58 59 // Calculates the size of a part before actually adding the part. 60 size_t GetPartSize(const std::string& data, 61 const std::string& content_disposition, 62 const std::string& content_type) const; 63 size_t GetEndPartSize() const; 64 65 // StreamInterface 66 virtual StreamState GetState() const; 67 virtual StreamResult Read(void* buffer, size_t buffer_len, 68 size_t* read, int* error); 69 virtual StreamResult Write(const void* data, size_t data_len, 70 size_t* written, int* error); 71 virtual void Close(); 72 virtual bool SetPosition(size_t position); 73 virtual bool GetPosition(size_t* position) const; 74 virtual bool GetSize(size_t* size) const; 75 virtual bool GetAvailable(size_t* size) const; 76 77 private: 78 typedef std::vector<StreamInterface*> PartList; 79 80 // StreamInterface Slots 81 void OnEvent(StreamInterface* stream, int events, int error); 82 83 std::string type_, boundary_; 84 PartList parts_; 85 bool adding_; 86 size_t current_; // The index into parts_ of the current read position. 87 size_t position_; // The current read position in bytes. 88 89 DISALLOW_COPY_AND_ASSIGN(MultipartStream); 90 }; 91 92 } // namespace talk_base 93 94 #endif // TALK_BASE_MULTIPART_H__ 95