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 35namespace 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 42class 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