libmapi++/attachment.h

   1 /*
   2    libmapi C++ Wrapper
   3    Attachment Class
   4
   5    Copyright (C) Alan Alvarez 2008.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21
  22 #ifndef LIBMAPIPP__ATTACHMENT_H__
  23 #define LIBMAPIPP__ATTACHMENT_H__
  24
  25 #include <iostream> //for debugging
  26 #include <string>
  27
  28 #include <libmapi++/clibmapi.h>
  29 #include <libmapi++/message.h>
  30
  31 namespace libmapipp
  32 {
  33 class object;
  34
  35 /**
  36  * \brief This class represents a message %attachment
  37  *
  38  * A message can contain both text content, and also have attached
  39  * (embedded) files and messages. This class represents the attachments
  40  * for one messaage.
  41  *
  42  * You may not need to create the attachments yourself, since you can
  43  * create a container with all the attachments using message::fetch_attachments().
  44  */
  45 class attachment : public object {
  46         public:
  47                 /** \brief Constructor
  48                  *
  49                  *  \param mapi_message the message that this attachment belongs to.
  50                  *  \param attach_num Attachment Number.
  51                  */
  52                 attachment(message& mapi_message, const uint32_t attach_num) throw(mapi_exception)
  53                 : object(mapi_message.get_session(), "attachment"), m_attach_num(attach_num), m_bin_data(NULL), m_data_size(0), m_filename("")
  54                 {
  55                         if (OpenAttach(&mapi_message.data(), attach_num, &m_object) != MAPI_E_SUCCESS)
  56                                 throw mapi_exception(GetLastError(), "attachment::attachment : OpenAttach");
  57
  58                         property_container properties = get_property_container();
  59                         properties << PR_ATTACH_FILENAME << PR_ATTACH_LONG_FILENAME << PR_ATTACH_SIZE << PR_ATTACH_DATA_BIN << PR_ATTACH_METHOD;
  60                         properties.fetch();
  61
  62                         const char* filename = static_cast<const char*>(properties[PR_ATTACH_LONG_FILENAME]);
  63                         if (!filename) {
  64                                 filename = static_cast<const char*>(properties[PR_ATTACH_FILENAME]);
  65                         }
  66
  67                         if (filename) {
  68                                 m_filename = filename;
  69                         }
  70
  71                         m_data_size = *(static_cast<const uint32_t*>(properties[PR_ATTACH_SIZE]));
  72
  73                         const Binary_r* attachment_data = static_cast<const Binary_r*>(properties[PR_ATTACH_DATA_BIN]);
  74
  75                         // Don't load PR_ATTACH_DATA_BIN if it's embedded in message.
  76                         // NOTE: Use RopOpenEmbeddedMessage when it is implemented.
  77                         const uint32_t attach_method = *static_cast<const uint32_t*>(properties[PR_ATTACH_METHOD]);
  78                         if (attach_method != ATTACH_BY_VALUE)
  79                                 return;
  80
  81                         // Get Binary Data.
  82                         if (attachment_data) {
  83                                 m_data_size = attachment_data->cb;
  84                                 m_bin_data = new uint8_t[m_data_size];
  85                                 memcpy(m_bin_data, attachment_data->lpb, attachment_data->cb);
  86                         } else {
  87                                 mapi_object_t obj_stream;
  88                                 mapi_object_init(&obj_stream);
  89                                 if (OpenStream(&m_object, PR_ATTACH_DATA_BIN, OpenStream_ReadOnly, &obj_stream) != MAPI_E_SUCCESS)
  90                                         throw mapi_exception(GetLastError(), "attachment::attachment : OpenStream");
  91
  92                                 if (GetStreamSize(&obj_stream, &m_data_size) != MAPI_E_SUCCESS)
  93                                         throw mapi_exception(GetLastError(), "attachment::attachment : GetStreamSize");
  94
  95                                 m_bin_data = new uint8_t[m_data_size];
  96
  97                                 uint32_t pos = 0;
  98                                 uint16_t bytes_read = 0;
  99                                 do {
 100                                         if (ReadStream(&obj_stream, m_bin_data+pos, 1024, &bytes_read) != MAPI_E_SUCCESS)
 101                                                 throw mapi_exception(GetLastError(), "attachment::attachment : ReadStream");
 102
 103                                         pos += bytes_read;
 104
 105                                 } while (bytes_read && pos < m_data_size);
 106
 107                                 mapi_object_release(&obj_stream);
 108                         }
 109
 110                 }
 111
 112                 /**
 113                  * \brief The %attachment number
 114                  */
 115                 uint32_t get_num() const { return m_attach_num; }
 116
 117                 /**
 118                  * \brief the contents of the %attachment
 119                  *
 120                  * \note the length of the array is given by get_data_size()
 121                  */
 122                 const uint8_t* get_data() const  { return m_bin_data; }
 123
 124                 /**
 125                  * \brief the size of the %attachment
 126                  *
 127                  * \return the size of the %attachment in bytes
 128                  */
 129                 uint32_t get_data_size() const { return m_data_size; }
 130
 131                 /**
 132                  * \brief the filename of the %attachment
 133                  *
 134                  * \note not all attachments have file names
 135                  *
 136                  * \return string containing the file name of the %attachment, if any
 137                  */
 138                 std::string get_filename() const { return m_filename; }
 139
 140                 /**
 141                  * Destructor
 142                  */
 143                 virtual ~attachment() throw()
 144                 {
 145                         if (m_bin_data) delete[] m_bin_data;
 146                 }
 147
 148         private:
 149                 uint32_t        m_attach_num;
 150                 uint8_t*        m_bin_data;     // (same as unsigned char* ?)
 151                 uint32_t        m_data_size;
 152                 std::string     m_filename;
 153 };
 154
 155 } // namespace libmapipp
 156
 157 #endif //!LIBMAPIPP__ATTACHMENT_H__