1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
* e-mail-parser-multipart-alternative.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "e-mail-format-extensions.h"
#include <em-format/e-mail-parser-extension.h>
#include <em-format/e-mail-parser.h>
#include <em-format/e-mail-part-utils.h>
#include <e-util/e-util.h>
#include <camel/camel.h>
#include <string.h>
typedef struct _EMailParserMultipartAlternative {
GObject parent;
} EMailParserMultipartAlternative;
typedef struct _EMailParserMultipartAlternativeClass {
GObjectClass parent_class;
} EMailParserMultipartAlternativeClass;
static void e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface);
static void e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface);
G_DEFINE_TYPE_EXTENDED (
EMailParserMultipartAlternative,
e_mail_parser_multipart_alternative,
G_TYPE_OBJECT,
0,
G_IMPLEMENT_INTERFACE (
E_TYPE_MAIL_EXTENSION,
e_mail_parser_mail_extension_interface_init)
G_IMPLEMENT_INTERFACE (
E_TYPE_MAIL_PARSER_EXTENSION,
e_mail_parser_parser_extension_interface_init));
static const gchar* parser_mime_types[] = { "multipart/alternative", NULL };
static gboolean
related_display_part_is_attachment (CamelMimePart *part)
{
CamelMimePart *display_part;
display_part = e_mail_part_get_related_display_part (part, NULL);
return display_part && e_mail_part_is_attachment (display_part);
}
static GSList *
empe_mp_alternative_parse (EMailParserExtension *extension,
EMailParser *parser,
CamelMimePart *part,
GString *part_id,
GCancellable *cancellable)
{
CamelMultipart *mp;
gint i, nparts, bestid = 0;
CamelMimePart *best = NULL;
GSList *parts;
EMailExtensionRegistry *reg;
if (g_cancellable_is_cancelled (cancellable))
return NULL;
reg = e_mail_parser_get_extension_registry (parser);
mp = (CamelMultipart *) camel_medium_get_content ((CamelMedium *) part);
if (!CAMEL_IS_MULTIPART (mp)) {
return e_mail_parser_parse_part_as (
parser, part, part_id,
"application/vnd.evolution.source",
cancellable);
}
/* as per rfc, find the last part we know how to display */
nparts = camel_multipart_get_number (mp);
for (i = 0; i < nparts; i++) {
CamelMimePart *mpart;
CamelDataWrapper *data_wrapper;
CamelContentType *type;
CamelStream *null_stream;
gchar *mime_type;
gsize content_size;
if (g_cancellable_is_cancelled (cancellable))
return NULL;
/* is it correct to use the passed in *part here? */
mpart = camel_multipart_get_part (mp, i);
if (mpart == NULL)
continue;
/* This may block even though the stream does not.
* XXX Pretty inefficient way to test if the MIME part
* is empty. Surely there's a quicker way? */
null_stream = camel_stream_null_new ();
data_wrapper = camel_medium_get_content (CAMEL_MEDIUM (mpart));
camel_data_wrapper_decode_to_stream_sync (
data_wrapper, null_stream, cancellable, NULL);
content_size = CAMEL_STREAM_NULL (null_stream)->written;
g_object_unref (null_stream);
if (content_size == 0)
continue;
type = camel_mime_part_get_content_type (mpart);
mime_type = camel_content_type_simple (type);
camel_strdown (mime_type);
if (!e_mail_part_is_attachment (mpart) &&
((camel_content_type_is (type, "multipart", "related") == 0) ||
!related_display_part_is_attachment (mpart)) &&
(e_mail_extension_registry_get_for_mime_type (reg, mime_type) ||
((best == NULL) &&
(e_mail_extension_registry_get_fallback (reg, mime_type)))))
{
best = mpart;
bestid = i;
}
g_free (mime_type);
}
if (best) {
gint len = part_id->len;
g_string_append_printf(part_id, ".alternative.%d", bestid);
parts = e_mail_parser_parse_part (
parser, best, part_id, cancellable);
g_string_truncate (part_id, len);
} else {
parts = e_mail_parser_parse_part_as (
parser, part, part_id, "multipart/mixed", cancellable);
}
return parts;
}
static const gchar **
empe_mp_alternative_mime_types (EMailExtension *extension)
{
return parser_mime_types;
}
static void
e_mail_parser_multipart_alternative_class_init (EMailParserMultipartAlternativeClass *class)
{
}
static void
e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface)
{
iface->parse = empe_mp_alternative_parse;
}
static void
e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface)
{
iface->mime_types = empe_mp_alternative_mime_types;
}
static void
e_mail_parser_multipart_alternative_init (EMailParserMultipartAlternative *parser)
{
}
|
