src/core/sipe-mime.c

   1 /**
   2  * @file sipe-mime.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2010-2017 SIPE Project <http://sipe.sourceforge.net/>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include <string.h>
  24
  25 #include "sipe-common.h"
  26
  27 #include <glib.h>
  28
  29 /*
  30  * GMIME interfaces fail to compile on ARM architecture with -Wcast-align
  31  *
  32  * Diagnostic #pragma was added in GCC 4.2.0
  33  */
  34 #if defined(__GNUC__)
  35 #if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ >= 5)
  36 #if defined(__ARMEL__) || defined(__ARMEB__) || defined(__mips__) || defined(__sparc__) || (defined(__powerpc__) && defined(__NO_FPRS__))
  37 #pragma GCC diagnostic ignored "-Wcast-align"
  38 #endif
  39 #endif
  40 #endif
  41
  42 #include <gmime/gmime.h>
  43
  44 #if !GMIME_CHECK_VERSION(3,0,0)
  45 #define g_mime_part_get_content(p)         g_mime_part_get_content_object(p)
  46 #define g_mime_parser_construct_part(p, o) g_mime_parser_construct_part(p)
  47 #endif
  48
  49 #include "sipe-mime.h"
  50
  51 #include "sipe-backend.h"
  52 #include "sipe-utils.h"
  53
  54 void sipe_mime_init(void)
  55 {
  56         g_mime_init(
  57 #if !GMIME_CHECK_VERSION(3,0,0)
  58                 0
  59 #endif
  60         );
  61 }
  62
  63 void sipe_mime_shutdown(void)
  64 {
  65         g_mime_shutdown();
  66 }
  67
  68 struct gmime_callback_data {
  69         sipe_mime_parts_cb callback;
  70         gpointer user_data;
  71 };
  72
  73 static GSList *gmime_fields_to_nameval(GMimeObject *part)
  74 {
  75         GMimeHeaderList *headers = g_mime_object_get_header_list(part);
  76         GSList *fields = NULL;
  77 #if GMIME_CHECK_VERSION(3,0,0)
  78         guint count = g_mime_header_list_get_count(headers);
  79         guint index;
  80
  81         for (index = 0; index < count; index++) {
  82                 GMimeHeader *header = g_mime_header_list_get_header_at(headers,
  83                                                                        index);
  84                 fields = sipe_utils_nameval_add(fields,
  85                                                 g_mime_header_get_name(header),
  86                                                 g_mime_header_get_value(header));
  87         }
  88 #else
  89         GMimeHeaderIter *iter = g_mime_header_iter_new();
  90
  91         if (g_mime_header_list_get_iter(headers, iter)) {
  92                 do {
  93                         fields = sipe_utils_nameval_add(fields,
  94                                                         g_mime_header_iter_get_name(iter),
  95                                                         g_mime_header_iter_get_value(iter));
  96                 } while (g_mime_header_iter_next(iter));
  97         }
  98         g_mime_header_iter_free(iter);
  99 #endif
 100
 101         return fields;
 102 }
 103
 104 static void gmime_callback(SIPE_UNUSED_PARAMETER GMimeObject *parent,
 105                            GMimeObject *part,
 106                            gpointer user_data)
 107 {
 108         GMimeDataWrapper *data = g_mime_part_get_content((GMimePart *)part);
 109
 110         if (data) {
 111                 GMimeStream *stream = g_mime_data_wrapper_get_stream(data);
 112
 113                 if (stream) {
 114                         ssize_t length = 0;
 115                         const char *encoding;
 116                         gchar *buffer;
 117                         GString *content;
 118
 119                         encoding = g_mime_object_get_header(part,
 120                                         "Content-Transfer-Encoding");
 121                         if (encoding) {
 122                                 GMimeFilter *filter = g_mime_filter_basic_new(
 123                                                 g_mime_content_encoding_from_string(encoding), FALSE);
 124                                 stream = g_mime_stream_filter_new (stream);
 125                                 g_mime_stream_filter_add(GMIME_STREAM_FILTER(stream), filter);
 126                                 g_object_unref (filter);
 127                         }
 128
 129                         /* g_mime_stream_read() might not read everything in one call */
 130                         content = g_string_new(NULL);
 131                         buffer = g_malloc(4096);
 132                         while ((length = g_mime_stream_read(stream, buffer, 4096)) > 0) {
 133                                 g_string_append_len(content, buffer, length);
 134                         }
 135                         g_free(buffer);
 136
 137                         if (length == 0) {
 138                                 struct gmime_callback_data *cd = user_data;
 139                                 GSList *fields = gmime_fields_to_nameval(part);
 140
 141                                 cd->callback(cd->user_data, fields,
 142                                                 content->str, content->len);
 143
 144                                 sipe_utils_nameval_free(fields);
 145                         }
 146
 147                         g_string_free(content, TRUE);
 148
 149                         if (encoding) {
 150                                 // Unref GMimeStreamFilter wrapping GMimeStream.
 151                                 g_object_unref(stream);
 152                         }
 153                 }
 154         }
 155 }
 156
 157 void sipe_mime_parts_foreach(const gchar *type,
 158                              const gchar *body,
 159                              sipe_mime_parts_cb callback,
 160                              gpointer user_data)
 161 {
 162         gchar *doc = g_strdup_printf("Content-Type: %s\r\n\r\n%s", type, body);
 163         GMimeStream *stream = g_mime_stream_mem_new_with_buffer(doc, strlen(doc));
 164
 165         if (stream) {
 166                 GMimeParser *parser = g_mime_parser_new_with_stream(stream);
 167                 GMimeMultipart *multipart = (GMimeMultipart *)g_mime_parser_construct_part(parser,
 168                                                                                            NULL);
 169
 170                 if (multipart) {
 171                         struct gmime_callback_data cd = {callback, user_data};
 172
 173                         SIPE_DEBUG_INFO("sipe_mime_parts_foreach: %d parts", g_mime_multipart_get_count(multipart));
 174
 175                         g_mime_multipart_foreach(multipart, gmime_callback, &cd);
 176                         g_object_unref(multipart);
 177                 }
 178
 179                 g_object_unref(parser);
 180                 g_object_unref(stream);
 181         }
 182         g_free(doc);
 183 }
 184
 185 /*
 186   Local Variables:
 187   mode: c
 188   c-file-style: "bsd"
 189   indent-tabs-mode: t
 190   tab-width: 8
 191   End:
 192 */