henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 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__ |