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1 /*
2 * e-file-request.c
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) version 3.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with the program; if not, see <http://www.gnu.org/licenses/>
16 *
17 */
18
19 #define LIBSOUP_USE_UNSTABLE_REQUEST_API
20
21 #include "e-file-request.h"
22
23 #include <libsoup/soup.h>
24
25 #include <e-util/e-util.h>
26
27 #include <string.h>
28
29 #define d(x)
30
31 #define E_FILE_REQUEST_GET_PRIVATE(obj) \
32 (G_TYPE_INSTANCE_GET_PRIVATE \
33 ((obj), E_TYPE_FILE_REQUEST, EFileRequestPrivate))
34
35 struct _EFileRequestPrivate {
36 gchar *content_type;
37 gint content_length;
38 };
39
40 G_DEFINE_TYPE (EFileRequest, e_file_request, SOUP_TYPE_REQUEST)
41
42 static void
43 handle_file_request (GSimpleAsyncResult *res,
44 GObject *object,
45 GCancellable *cancellable)
46 {
47 EFileRequest *request = E_FILE_REQUEST (object);
48 SoupURI *uri;
49 GInputStream *stream;
50 gchar *contents;
51 gsize length;
52
53 if (g_cancellable_is_cancelled (cancellable))
54 return;
55
56 uri = soup_request_get_uri (SOUP_REQUEST (request));
57
58 if (g_file_get_contents (uri->path, &contents, &length, NULL)) {
59
60 request->priv->content_type = g_content_type_guess (uri->path, NULL, 0, NULL);
61 request->priv->content_length = length;
62
63 stream = g_memory_input_stream_new_from_data (
64 contents, length, (GDestroyNotify) g_free);
65 g_simple_async_result_set_op_res_gpointer (res, stream, NULL);
66 }
67 }
68
69 static void
70 file_request_finalize (GObject *object)
71 {
72 EFileRequest *request = E_FILE_REQUEST (object);
73
74 if (request->priv->content_type) {
75 g_free (request->priv->content_type);
76 request->priv->content_type = NULL;
77 }
78
79 G_OBJECT_CLASS (e_file_request_parent_class)->finalize (object);
80 }
81
82 static gboolean
83 file_request_check_uri (SoupRequest *request,
84 SoupURI *uri,
85 GError **error)
86 {
87 return (strcmp (uri->scheme, "evo-file") == 0);
88 }
89
90 static void
91 file_request_send_async (SoupRequest *request,
92 GCancellable *cancellable,
93 GAsyncReadyCallback callback,
94 gpointer user_data)
95 {
96 GSimpleAsyncResult *simple;
97
98 d (printf ("received request for %s\n", soup_uri_to_string (uri, FALSE)));
99
100 /* WebKit won't allow us to load data through local file:// protocol
101 * when using "remote" mail:// protocol, so we have evo-file://
102 * which WebKit thinks it's remote, but in fact it behaves like
103 * oridnary file:// */
104
105 simple = g_simple_async_result_new (
106 G_OBJECT (request), callback, user_data,
107 file_request_send_async);
108
109 g_simple_async_result_set_check_cancellable (simple, cancellable);
110
111 g_simple_async_result_run_in_thread (
112 simple, handle_file_request,
113 G_PRIORITY_DEFAULT, cancellable);
114
115 g_object_unref (simple);
116 }
117
118 static GInputStream *
119 file_request_send_finish (SoupRequest *request,
120 GAsyncResult *result,
121 GError **error)
122 {
123 GSimpleAsyncResult *simple;
124 GInputStream *stream;
125
126 simple = G_SIMPLE_ASYNC_RESULT (result);
127 stream = g_simple_async_result_get_op_res_gpointer (simple);
128
129 /* Reset the stream before passing it back to webkit */
130 if (stream && G_IS_SEEKABLE (stream))
131 g_seekable_seek (G_SEEKABLE (stream), 0, G_SEEK_SET, NULL, NULL);
132
133 if (!stream) /* We must always return something */
134 stream = g_memory_input_stream_new ();
135
136 return stream;
137 }
138
139 static goffset
140 file_request_get_content_length (SoupRequest *request)
141 {
142 EFileRequest *efr = E_FILE_REQUEST (request);
143
144 d (printf ("Content-Length: %d bytes\n", efr->priv->content_length));
145
146 return efr->priv->content_length;
147 }
148
149 static const gchar *
150 file_request_get_content_type (SoupRequest *request)
151 {
152 EFileRequest *efr = E_FILE_REQUEST (request);
153
154 d (printf ("Content-Type: %s\n", efr->priv->content_type));
155
156 return efr->priv->content_type;
157 }
158
159 static const gchar *data_schemes[] = { "evo-file", NULL };
160
161 static void
162 e_file_request_class_init (EFileRequestClass *class)
163 {
164 GObjectClass *object_class;
165 SoupRequestClass *request_class;
166
167 g_type_class_add_private (class, sizeof (EFileRequestPrivate));
168
169 object_class = G_OBJECT_CLASS (class);
170 object_class->finalize = file_request_finalize;
171
172 request_class = SOUP_REQUEST_CLASS (class);
173 request_class->schemes = data_schemes;
174 request_class->send_async = file_request_send_async;
175 request_class->send_finish = file_request_send_finish;
176 request_class->get_content_type = file_request_get_content_type;
177 request_class->get_content_length = file_request_get_content_length;
178 request_class->check_uri = file_request_check_uri;
179 }
180
181 static void
182 e_file_request_init (EFileRequest *request)
183 {
184 request->priv = E_FILE_REQUEST_GET_PRIVATE (request);
185 }