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
191
192
193
194
195
196
197
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@helixcode.com>
*
* Copyright 2000 Helix Code, Inc. (www.helixcode.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
*
*/
#include <config.h>
#include "camel-imap-stream.h"
#include <sys/types.h>
#include <errno.h>
#include <stdlib.h>
static CamelStreamClass *parent_class = NULL;
/* Returns the class for a CamelImapStream */
#define CIS_CLASS(so) CAMEL_IMAP_STREAM_CLASS (CAMEL_OBJECT_GET_CLASS(so))
static ssize_t stream_read (CamelStream *stream, char *buffer, size_t n);
static int stream_reset (CamelStream *stream);
static gboolean stream_eos (CamelStream *stream);
static void finalize (CamelObject *object);
static void
camel_imap_stream_class_init (CamelImapStreamClass *camel_imap_stream_class)
{
CamelStreamClass *camel_stream_class =
CAMEL_STREAM_CLASS (camel_imap_stream_class);
parent_class = CAMEL_STREAM_CLASS(camel_type_get_global_classfuncs (camel_stream_get_type ()));
/* virtual method overload */
camel_stream_class->read = stream_read;
camel_stream_class->reset = stream_reset;
camel_stream_class->eos = stream_eos;
}
static void
camel_imap_stream_init (gpointer object, gpointer klass)
{
CamelImapStream *imap_stream = CAMEL_IMAP_STREAM (object);
imap_stream->cache = NULL;
imap_stream->cache_ptr = NULL;
}
CamelType
camel_imap_stream_get_type (void)
{
static CamelType camel_imap_stream_type = CAMEL_INVALID_TYPE;
if (camel_imap_stream_type == CAMEL_INVALID_TYPE) {
camel_imap_stream_type = camel_type_register (camel_stream_get_type (), "CamelImapStream",
sizeof (CamelImapStream),
sizeof (CamelImapStreamClass),
(CamelObjectClassInitFunc) camel_imap_stream_class_init,
NULL,
(CamelObjectInitFunc) camel_imap_stream_init,
(CamelObjectFinalizeFunc) finalize);
}
return camel_imap_stream_type;
}
CamelStream *
camel_imap_stream_new (CamelImapFolder *folder, char *command)
{
CamelImapStream *imap_stream;
imap_stream = CAMEL_IMAP_STREAM(camel_object_new (camel_imap_stream_get_type ()));
imap_stream->folder = folder;
camel_object_ref (CAMEL_OBJECT (imap_stream->folder));
imap_stream->command = g_strdup (command);
return CAMEL_STREAM (imap_stream);
}
static void
finalize (CamelObject *object)
{
CamelImapStream *imap_stream = CAMEL_IMAP_STREAM (object);
g_free (imap_stream->cache);
g_free (imap_stream->command);
if (imap_stream->folder)
camel_object_unref (CAMEL_OBJECT (imap_stream->folder));
}
static ssize_t
stream_read (CamelStream *stream, char *buffer, size_t n)
{
ssize_t nread;
/* do we want to do any IMAP specific parsing in here? If not, maybe rename to camel-stream-cache? */
CamelImapStream *imap_stream = CAMEL_IMAP_STREAM (stream);
if (!imap_stream->cache) {
/* We need to send the IMAP command since this is our first fetch */
CamelFolder *folder = CAMEL_FOLDER (imap_stream->folder);
gchar *result, *p, *q;
gint status, part_len;
status = camel_imap_command_extended (CAMEL_IMAP_STORE (folder->parent_store),
CAMEL_FOLDER (imap_stream->folder),
&result, "%s\r\n",
imap_stream->command);
if (!result || status != CAMEL_IMAP_OK) {
/* we got an error, dump this stuff */
g_free (result);
imap_stream->cache = NULL;
camel_object_unref (CAMEL_OBJECT (imap_stream->folder));
return -1;
}
/* we don't need the folder anymore... */
camel_object_unref (CAMEL_OBJECT (imap_stream->folder));
/* parse out the message part */
for (p = result; *p && *p != '{' && *p != '\n'; p++);
if (*p != '{') {
g_free (result);
return -1;
}
part_len = atoi (p + 1);
for ( ; *p && *p != '\n'; p++);
if (*p != '\n') {
g_free (result);
return -1;
}
/* calculate the new part-length */
for (q = p; *q && (q - p) <= part_len; q++) {
if (*q == '\n')
part_len--;
}
/* FIXME: This is a hack for IMAP daemons that send us a UID at the end of each FETCH */
for (q--, part_len--; q > p && *(q-1) != '\n'; q--, part_len--);
imap_stream->cache = g_strndup (p, part_len + 1);
g_free (result);
imap_stream->cache_ptr = imap_stream->cache;
}
/* we've already read this stream, so return whats in the cache */
nread = MIN (n, strlen (imap_stream->cache_ptr));
if (nread > 0) {
memcpy (buffer, imap_stream->cache_ptr, nread);
imap_stream->cache_ptr += nread;
} else {
nread = -1;
}
return nread;
}
static int
stream_reset (CamelStream *stream)
{
CamelImapStream *imap_stream = CAMEL_IMAP_STREAM (stream);
imap_stream->cache_ptr = imap_stream->cache;
return 1;
}
static gboolean
stream_eos (CamelStream *stream)
{
CamelImapStream *imap_stream = CAMEL_IMAP_STREAM (stream);
return (imap_stream->cache_ptr && strlen (imap_stream->cache_ptr));
}
|
