aboutsummaryrefslogtreecommitdiffstats
path: root/em-format/e-mail-parser-application-mbox.c
blob: 73c86a7a5712367504edfe64d99600068977c115 (plain) (blame)
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
/*
 * e-mail-parser-application-mbox.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 <string.h>
#include <glib/gi18n-lib.h>

#include <e-util/e-util.h>

#include "e-mail-parser-extension.h"
#include "e-mail-part-utils.h"

typedef EMailParserExtension EMailParserApplicationMBox;
typedef EMailParserExtensionClass EMailParserApplicationMBoxClass;

GType e_mail_parser_application_mbox_get_type (void);

G_DEFINE_TYPE (
    EMailParserApplicationMBox,
    e_mail_parser_application_mbox,
    E_TYPE_MAIL_PARSER_EXTENSION)

static const gchar *parser_mime_types[] = {
    "application/mbox",
    NULL
};

static gboolean
empe_app_mbox_parse (EMailParserExtension *extension,
                     EMailParser *parser,
                     CamelMimePart *part,
                     GString *part_id,
                     GCancellable *cancellable,
                     GQueue *out_mail_parts)
{
    CamelMimeParser *mime_parser;
    CamelStream *mem_stream;
    camel_mime_parser_state_t state;
    gint old_len;
    gint messages;
    GError *error = NULL;

    /* Extract messages from the application/mbox part and
     * render them as a flat list of messages. */

    /* XXX If the mbox has multiple messages, maybe render them
     *     as a multipart/digest so each message can be expanded
     *     or collapsed individually.
     *
     *     See attachment_handler_mail_x_uid_list() for example. */

    /* XXX This is based on em_utils_read_messages_from_stream().
     *     Perhaps refactor that function to return an array of
     *     messages instead of assuming we want to append them
     *     to a folder? */

    mime_parser = camel_mime_parser_new ();
    camel_mime_parser_scan_from (mime_parser, TRUE);

    mem_stream = camel_stream_mem_new ();
    camel_data_wrapper_decode_to_stream_sync (
        camel_medium_get_content (CAMEL_MEDIUM (part)),
        mem_stream, NULL, NULL);
    g_seekable_seek (G_SEEKABLE (mem_stream), 0, G_SEEK_SET, cancellable, NULL);

    camel_mime_parser_init_with_stream (mime_parser, mem_stream, &error);
    if (error != NULL) {
        e_mail_parser_error (
            parser, out_mail_parts,
            _("Error parsing MBOX part: %s"),
            error->message);
        g_object_unref (mem_stream);
        g_object_unref (mime_parser);
        g_error_free (error);
        return TRUE;
    }

    g_object_unref (mem_stream);

    old_len = part_id->len;

    /* Extract messages from the mbox. */
    messages = 0;
    state = camel_mime_parser_step (mime_parser, NULL, NULL);

    while (state == CAMEL_MIME_PARSER_STATE_FROM) {
        GQueue work_queue = G_QUEUE_INIT;
        CamelMimeMessage *message;
        CamelMimePart *opart;

        message = camel_mime_message_new ();
        opart = CAMEL_MIME_PART (message);

        if (!camel_mime_part_construct_from_parser_sync (
            opart, mime_parser, NULL, NULL)) {
            g_object_unref (message);
            break;
        }

        g_string_append_printf (part_id, ".mbox.%d", messages);

        opart = camel_mime_part_new ();
        camel_medium_set_content (CAMEL_MEDIUM (opart), CAMEL_DATA_WRAPPER (message));
        camel_data_wrapper_set_mime_type (CAMEL_DATA_WRAPPER (opart), "message/rfc822");

        e_mail_parser_parse_part_as (
            parser, opart, part_id, "message/rfc822",
            cancellable, &work_queue);

        /* Wrap every message as attachment */
        e_mail_parser_wrap_as_attachment (
            parser, opart, part_id, &work_queue);

        /* Inline all messages in mbox */
        if (!g_queue_is_empty (&work_queue)) {
            EMailPart *p = g_queue_peek_head (&work_queue);

            p->force_inline = TRUE;
        }

        e_queue_transfer (&work_queue, out_mail_parts);

        g_string_truncate (part_id, old_len);

        g_object_unref (message);
        g_object_unref (opart);

        /* Skip past CAMEL_MIME_PARSER_STATE_FROM_END. */
        camel_mime_parser_step (mime_parser, NULL, NULL);

        state = camel_mime_parser_step (mime_parser, NULL, NULL);

        messages++;
    }

    g_object_unref (mime_parser);

    return TRUE;
}

static void
e_mail_parser_application_mbox_class_init (EMailParserExtensionClass *class)
{
    class->mime_types = parser_mime_types;
    class->priority = G_PRIORITY_LOW;
    class->flags =
        E_MAIL_PARSER_EXTENSION_INLINE |
        E_MAIL_PARSER_EXTENSION_COMPOUND_TYPE;
    class->parse = empe_app_mbox_parse;
}

static void
e_mail_parser_application_mbox_init (EMailParserExtension *extension)
{
}