/*
* e-mail-request.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
*
*/
#define LIBSOUP_USE_UNSTABLE_REQUEST_API
#include "e-mail-request.h"
#include
#include
#include
#include
#include
#include "em-format-html.h"
#include
#include
#define d(x)
#define dd(x)
#define E_MAIL_REQUEST_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_MAIL_REQUEST, EMailRequestPrivate))
struct _EMailRequestPrivate {
EMFormatHTML *efh;
CamelStream *output_stream;
EMFormatPURI *puri;
gchar *mime_type;
gint content_length;
GHashTable *uri_query;
gchar *ret_mime_type;
};
G_DEFINE_TYPE (EMailRequest, e_mail_request, SOUP_TYPE_REQUEST)
static void
handle_mail_request (GSimpleAsyncResult *res,
GObject *object,
GCancellable *cancellable)
{
EMailRequest *request = E_MAIL_REQUEST (object);
EMFormatHTML *efh = request->priv->efh;
EMFormat *emf = EM_FORMAT (efh);
GInputStream *stream;
GByteArray *ba;
gchar *part_id;
EMFormatWriterInfo info = {0};
gchar *val;
if (g_cancellable_is_cancelled (cancellable))
return;
if (request->priv->output_stream != NULL) {
g_object_unref (request->priv->output_stream);
}
request->priv->output_stream = camel_stream_mem_new ();
val = g_hash_table_lookup (request->priv->uri_query, "headers_collapsed");
if (val)
info.headers_collapsed = atoi (val);
val = g_hash_table_lookup (request->priv->uri_query, "headers_collapsable");
if (val)
info.headers_collapsable = atoi (val);
val = g_hash_table_lookup (request->priv->uri_query, "mode");
if (val)
info.mode = atoi (val);
part_id = g_hash_table_lookup (request->priv->uri_query, "part_id");
if (part_id) {
/* original part_id is owned by the GHashTable */
part_id = soup_uri_decode (part_id);
request->priv->puri = em_format_find_puri (emf, part_id);
if (request->priv->puri) {
em_format_puri_write (request->priv->puri,
request->priv->output_stream, &info, cancellable);
} else {
g_warning ("Failed to lookup requested part '%s' - this should not happen!", part_id);
}
g_free (part_id);
} else {
if (info.mode == 0)
info.mode = EM_FORMAT_WRITE_MODE_NORMAL;
em_format_write (emf, request->priv->output_stream, &info, cancellable);
}
/* Convert the GString to GInputStream and send it back to WebKit */
ba = camel_stream_mem_get_byte_array (CAMEL_STREAM_MEM (request->priv->output_stream));
if (!ba->data) {
gchar *data = g_strdup_printf(_("Failed to load part '%s'"), part_id);
dd(printf("%s", data));
g_byte_array_append (ba, (guchar *) data, strlen (data));
g_free (data);
} else {
dd ({
gchar *d = g_strndup ((gchar *) ba->data, ba->len);
printf("%s", d);
g_free (d);
});
}
stream = g_memory_input_stream_new_from_data (
(gchar *) ba->data, ba->len, NULL);
g_simple_async_result_set_op_res_gpointer (res, stream, NULL);
}
static void
handle_file_request (GSimpleAsyncResult *res,
GObject *object,
GCancellable *cancellable)
{
EMailRequest *request = E_MAIL_REQUEST (object);
SoupURI *uri;
GInputStream *stream;
gchar *contents;
gsize length;
if (g_cancellable_is_cancelled (cancellable))
return;
uri = soup_request_get_uri (SOUP_REQUEST (request));
if (g_file_get_contents (uri->path, &contents, &length, NULL)) {
request->priv->mime_type = g_content_type_guess (uri->path, NULL, 0, NULL);
request->priv->content_length = length;
stream = g_memory_input_stream_new_from_data (
contents, length, (GDestroyNotify) g_free);
g_simple_async_result_set_op_res_gpointer (res, stream, NULL);
}
}
struct http_request_async_data {
GMainLoop *loop;
GCancellable *cancellable;
CamelDataCache *cache;
gchar *cache_key;
GInputStream *stream;
CamelStream *cache_stream;
gchar *content_type;
goffset content_length;
gchar *buff;
};
static void
http_request_write_to_cache (GInputStream *stream,
GAsyncResult *res,
struct http_request_async_data *data)
{
GError *error;
gssize len;
error = NULL;
len = g_input_stream_read_finish (stream, res, &error);
/* Error while reading data */
if (len == -1) {
g_message ("Error while reading input stream: %s",
error ? error->message : "Unknown error");
g_clear_error (&error);
g_main_loop_quit (data->loop);
if (data->buff)
g_free (data->buff);
/* Don't keep broken data in cache */
camel_data_cache_remove (data->cache, "http", data->cache_key, NULL);
return;
}
/* EOF */
if (len == 0) {
camel_stream_close (data->cache_stream, data->cancellable, NULL);
if (data->buff)
g_free (data->buff);
g_main_loop_quit (data->loop);
return;
}
if (!data->cache_stream) {
if (data->buff)
g_free (data->buff);
g_main_loop_quit (data->loop);
return;
}
/* Write chunk to cache and read another block of data. */
camel_stream_write (data->cache_stream, data->buff, len,
data->cancellable, NULL);
g_input_stream_read_async (stream, data->buff, 4096,
G_PRIORITY_DEFAULT, data->cancellable,
(GAsyncReadyCallback) http_request_write_to_cache, data);
}
static void
http_request_finished (SoupRequest *request,
GAsyncResult *res,
struct http_request_async_data *data)
{
GError *error;
SoupMessage *message;
error = NULL;
data->stream = soup_request_send_finish (request, res, &error);
if (!data->stream) {
g_warning("HTTP request failed: %s", error ? error->message: "Unknown error");
g_clear_error (&error);
g_main_loop_quit (data->loop);
return;
}
message = soup_request_http_get_message (SOUP_REQUEST_HTTP (request));
if (!SOUP_STATUS_IS_SUCCESSFUL (message->status_code)) {
g_warning ("HTTP request failed: HTTP code %d", message->status_code);
g_main_loop_quit (data->loop);
g_object_unref (message);
return;
}
g_object_unref (message);
data->content_length = soup_request_get_content_length (request);
data->content_type = g_strdup (soup_request_get_content_type (request));
if (!data->cache_stream) {
g_main_loop_quit (data->loop);
return;
}
data->buff = g_malloc (4096);
g_input_stream_read_async (data->stream, data->buff, 4096,
G_PRIORITY_DEFAULT, data->cancellable,
(GAsyncReadyCallback) http_request_write_to_cache, data);
}
static void
handle_http_request (GSimpleAsyncResult *res,
GObject *object,
GCancellable *cancellable)
{
EMailRequest *request = E_MAIL_REQUEST (object);
SoupURI *soup_uri;
gchar *evo_uri, *uri;
GInputStream *stream;
gboolean force_load_images = FALSE;
gchar *uri_md5;
const gchar *user_cache_dir;
CamelDataCache *cache;
CamelStream *cache_stream;
gssize len;
gchar *buff;
GHashTable *query;
/* Remove the __evo-mail query */
soup_uri = soup_request_get_uri (SOUP_REQUEST (request));
query = soup_form_decode (soup_uri->query);
g_hash_table_remove (query, "__evo-mail");
/* Remove __evo-load-images if present (and in such case set
* force_load_images to TRUE) */
force_load_images = g_hash_table_remove (query, "__evo-load-images");
soup_uri_set_query_from_form (soup_uri, query);
g_hash_table_unref (query);
evo_uri = soup_uri_to_string (soup_uri, FALSE);
/* Remove the "evo-" prefix from scheme */
if (evo_uri && (strlen (evo_uri) > 5)) {
uri = g_strdup (&evo_uri[4]);
g_free (evo_uri);
}
g_return_if_fail (uri && *uri);
/* Use MD5 hash of the URI as a filname of the resourec cache file.
* We were previously using the URI as a filename but the URI is
* sometimes too long for a filename. */
uri_md5 = g_compute_checksum_for_string (G_CHECKSUM_MD5, uri, -1);
/* Open Evolution's cache */
user_cache_dir = e_get_user_cache_dir ();
cache = camel_data_cache_new (user_cache_dir, NULL);
if (cache) {
camel_data_cache_set_expire_age (cache, 24 * 60 * 60);
camel_data_cache_set_expire_access (cache, 2 * 60 * 60);
}
/* Found item in cache! */
cache_stream = camel_data_cache_get (cache, "http", uri_md5, NULL);
if (cache_stream) {
stream = g_memory_input_stream_new ();
request->priv->content_length = 0;
buff = g_malloc (4096);
while ((len = camel_stream_read (cache_stream, buff, 4096,
cancellable, NULL)) > 0) {
g_memory_input_stream_add_data (G_MEMORY_INPUT_STREAM (stream),
buff, len, g_free);
request->priv->content_length += len;
buff = g_malloc (4096);
}
g_object_unref (cache_stream);
/* When succesfully read some data from cache then
* get mimetype and return the stream to WebKit.
* Otherwise try to fetch the resource again from the network. */
if ((len != -1) && (request->priv->content_length > 0)) {
GFile *file;
GFileInfo *info;
gchar *path;
path = camel_data_cache_get_filename (cache, "http", uri_md5, NULL);
file = g_file_new_for_path (path);
info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
0, cancellable, NULL);
request->priv->mime_type = g_strdup (
g_file_info_get_content_type (info));
d(printf ("'%s' found in cache (%d bytes, %s)\n",
uri, request->priv->content_length,
request->priv->mime_type));
g_object_unref (info);
g_object_unref (file);
g_free (path);
/* Set result and quit the thread */
g_simple_async_result_set_op_res_gpointer (res, stream, NULL);
goto cleanup;
} else {
d(printf("Failed to load '%s' from cache.\n", uri));
}
}
/* Item not found in cache, but image loading policy allows us to fetch
* it from the interwebs */
if (force_load_images || em_format_html_can_load_images (request->priv->efh)) {
SoupRequester *requester;
SoupRequest *http_request;
SoupSession *session;
GMainContext *context;
GError *error;
struct http_request_async_data data = { 0 };
context = g_main_context_get_thread_default ();
session = soup_session_async_new_with_options (
SOUP_SESSION_ASYNC_CONTEXT, context, NULL);
requester = soup_requester_new ();
soup_session_add_feature (session, SOUP_SESSION_FEATURE (requester));
http_request = soup_requester_request (requester, uri, NULL);
error = NULL;
data.loop = g_main_loop_new (context, TRUE);
data.cancellable = cancellable;
data.cache = cache;
data.cache_key = uri_md5;
data.cache_stream = camel_data_cache_add (cache, "http", uri_md5, &error);
if (!data.cache_stream) {
g_warning ("Failed to create cache file for '%s': %s",
uri, error ? error->message : "Unknown error");
g_clear_error (&error);
}
/* Send the request and waint in mainloop until it's finished
* and copied to cache */
d(printf(" '%s' not in cache, sending HTTP request\n", uri));
soup_request_send_async (http_request, cancellable,
(GAsyncReadyCallback) http_request_finished, &data);
g_main_loop_run (data.loop);
d(printf (" '%s' fetched from internet and (hopefully) stored in"
" cache\n", uri));
g_main_loop_unref (data.loop);
g_object_unref (session);
g_object_unref (http_request);
g_object_unref (requester);
stream = data.stream;
if (!stream)
goto cleanup;
request->priv->content_length = data.content_length;
request->priv->mime_type = data.content_type;
g_simple_async_result_set_op_res_gpointer (res, stream, NULL);
goto cleanup;
}
cleanup:
g_free (uri);
g_free (uri_md5);
}
static void
handle_stock_request (GSimpleAsyncResult *res,
GObject *object,
GCancellable *cancellable)
{
EMailRequest *request;
SoupURI *uri;
GtkIconTheme *icon_theme;
GtkIconInfo *icon_info;
const gchar *file;
gchar *a_size;
gssize size;
gchar *buffer;
gsize buff_len;
GtkStyleContext *context;
GtkWidgetPath *path;
GtkIconSet *set;
request = E_MAIL_REQUEST (object);
uri = soup_request_get_uri (SOUP_REQUEST (object));
if (request->priv->uri_query) {
a_size = g_hash_table_lookup (request->priv->uri_query, "size");
} else {
a_size = NULL;
}
if (!a_size) {
size = GTK_ICON_SIZE_BUTTON;
} else {
size = atoi (a_size);
}
/* Try style context first */
context = gtk_style_context_new ();
path = gtk_widget_path_new ();
gtk_widget_path_append_type (path, GTK_TYPE_WINDOW);
gtk_widget_path_append_type (path, GTK_TYPE_BUTTON);
gtk_style_context_set_path (context, path);
set = gtk_style_context_lookup_icon_set (context, uri->host);
if (!set) {
/* Fallback to icon theme */
icon_theme = gtk_icon_theme_get_default ();
icon_info = gtk_icon_theme_lookup_icon (
icon_theme, uri->host, size,
GTK_ICON_LOOKUP_USE_BUILTIN);
if (!icon_info) {
gtk_widget_path_free (path);
g_object_unref (context);
return;
}
file = gtk_icon_info_get_filename (icon_info);
buffer = NULL;
if (file) {
if (g_file_get_contents (file, &buffer, &buff_len, NULL)) {
request->priv->mime_type =
g_content_type_guess (file, NULL, 0, NULL);
request->priv->content_length = buff_len;
}
} else {
GdkPixbuf *pixbuf;
pixbuf = gtk_icon_info_get_builtin_pixbuf (icon_info);
if (pixbuf) {
gdk_pixbuf_save_to_buffer (
pixbuf, &buffer,
&buff_len, "png", NULL, NULL);
request->priv->mime_type = g_strdup("image/png");
request->priv->content_length = buff_len;
g_object_unref (pixbuf);
}
}
gtk_icon_info_free (icon_info);
} else {
GdkPixbuf *pixbuf;
pixbuf = gtk_icon_set_render_icon_pixbuf (set, context, size);
gdk_pixbuf_save_to_buffer (
pixbuf, &buffer,
&buff_len, "png", NULL, NULL);
request->priv->mime_type = g_strdup("image/png");
request->priv->content_length = buff_len;
g_object_unref (pixbuf);
}
if (buffer) {
GInputStream *stream;
stream = g_memory_input_stream_new_from_data (
buffer, buff_len, (GDestroyNotify) g_free);
g_simple_async_result_set_op_res_gpointer (res, stream, NULL);
}
gtk_widget_path_free (path);
g_object_unref (context);
}
static void
mail_request_finalize (GObject *object)
{
EMailRequest *request = E_MAIL_REQUEST (object);
if (request->priv->output_stream) {
g_object_unref (request->priv->output_stream);
request->priv->output_stream = NULL;
}
if (request->priv->mime_type) {
g_free (request->priv->mime_type);
request->priv->mime_type = NULL;
}
if (request->priv->uri_query) {
g_hash_table_destroy (request->priv->uri_query);
request->priv->uri_query = NULL;
}
if (request->priv->ret_mime_type) {
g_free (request->priv->ret_mime_type);
request->priv->ret_mime_type = NULL;
}
if (request->priv->efh) {
g_object_unref (request->priv->efh);
request->priv->efh = NULL;
}
G_OBJECT_CLASS (e_mail_request_parent_class)->finalize (object);
}
static gboolean
mail_request_check_uri (SoupRequest *request,
SoupURI *uri,
GError **error)
{
return ((strcmp (uri->scheme, "mail") == 0) ||
(strcmp (uri->scheme, "evo-file") == 0) ||
(strcmp (uri->scheme, "evo-http") == 0) ||
(strcmp (uri->scheme, "evo-https") == 0) ||
(strcmp (uri->scheme, "gtk-stock") == 0));
}
static void
mail_request_send_async (SoupRequest *request,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
SoupSession *session;
EMailRequest *emr = E_MAIL_REQUEST (request);
GSimpleAsyncResult *result;
SoupURI *uri;
GHashTable *formatters;
session = soup_request_get_session (request);
uri = soup_request_get_uri (request);
d(printf("received request for %s\n", soup_uri_to_string (uri, FALSE)));
/* WebKit won't allow us to load data through local file:// protocol
* when using "remote" mail:// protocol, so we have evo-file://
* which WebKit thinks it's remote, but in fact it behaves like
* oridnary file:// */
if (g_strcmp0 (uri->scheme, "evo-file") == 0) {
result = g_simple_async_result_new (G_OBJECT (request), callback,
user_data, mail_request_send_async);
g_simple_async_result_run_in_thread (result, handle_file_request,
G_PRIORITY_DEFAULT, cancellable);
return;
}
if (uri->query) {
emr->priv->uri_query = soup_form_decode (uri->query);
} else {
emr->priv->uri_query = NULL;
}
formatters = g_object_get_data (G_OBJECT (session), "formatters");
g_return_if_fail (formatters != NULL);
/* Get HTML content of given PURI part */
if (g_strcmp0 (uri->scheme, "mail") == 0) {
gchar *uri_str;
uri_str = g_strdup_printf (
"%s://%s%s", uri->scheme, uri->host, uri->path);
emr->priv->efh = g_hash_table_lookup (formatters, uri_str);
g_free (uri_str);
g_return_if_fail (emr->priv->efh);
/* Make sure the formatter lives until we are finished here */
g_object_ref (emr->priv->efh);
result = g_simple_async_result_new (G_OBJECT (request), callback,
user_data, mail_request_send_async);
g_simple_async_result_run_in_thread (result, handle_mail_request,
G_PRIORITY_DEFAULT, cancellable);
return;
/* For http and https requests we have this evo-http(s) protocol.
* We first try to lookup the data in local cache and when not found,
* we send standard http(s) request to fetch them. But only when image
* loading policy allows us. */
} else if ((g_strcmp0 (uri->scheme, "evo-http") == 0) ||
(g_strcmp0 (uri->scheme, "evo-https") == 0)) {
gchar *mail_uri;
const gchar *enc = g_hash_table_lookup (emr->priv->uri_query,
"__evo-mail");
g_return_if_fail (enc && *enc);
mail_uri = soup_uri_decode (enc);
emr->priv->efh = g_hash_table_lookup (formatters, mail_uri);
g_free (mail_uri);
g_return_if_fail (emr->priv->efh);
/* Make sure the formatter lives until we are finished here */
g_object_ref (emr->priv->efh);
result = g_simple_async_result_new (G_OBJECT (request), callback,
user_data, mail_request_send_async);
g_simple_async_result_run_in_thread (result, handle_http_request,
G_PRIORITY_DEFAULT, cancellable);
return;
} else if ((g_strcmp0 (uri->scheme, "gtk-stock") == 0)) {
result = g_simple_async_result_new (G_OBJECT (request), callback,
user_data, mail_request_send_async);
g_simple_async_result_run_in_thread (result, handle_stock_request,
G_PRIORITY_DEFAULT, cancellable);
return;
}
}
static GInputStream *
mail_request_send_finish (SoupRequest *request,
GAsyncResult *result,
GError **error)
{
GInputStream *stream;
stream = g_simple_async_result_get_op_res_gpointer (G_SIMPLE_ASYNC_RESULT (result));
g_object_unref (result);
/* Reset the stream before passing it back to webkit */
if (stream && G_IS_SEEKABLE (stream))
g_seekable_seek (G_SEEKABLE (stream), 0, G_SEEK_SET, NULL, NULL);
else /* We must always return something */
stream = g_memory_input_stream_new ();
return stream;
}
static goffset
mail_request_get_content_length (SoupRequest *request)
{
EMailRequest *emr = E_MAIL_REQUEST (request);
GByteArray *ba;
gint content_length = 0;
if (emr->priv->content_length > 0)
content_length = emr->priv->content_length;
else if (emr->priv->output_stream) {
ba = camel_stream_mem_get_byte_array (CAMEL_STREAM_MEM (emr->priv->output_stream));
if (ba) {
content_length = ba->len;
}
}
d(printf("Content-Length: %d bytes\n", content_length));
return content_length;
}
static const gchar *
mail_request_get_content_type (SoupRequest *request)
{
EMailRequest *emr = E_MAIL_REQUEST (request);
gchar *mime_type;
if (emr->priv->mime_type) {
mime_type = g_strdup (emr->priv->mime_type);
} else if (!emr->priv->puri) {
mime_type = g_strdup ("text/html");
} else if (!emr->priv->puri->mime_type) {
CamelContentType *ct = camel_mime_part_get_content_type (emr->priv->puri->part);
mime_type = camel_content_type_simple (ct);
} else {
mime_type = g_strdup (emr->priv->puri->mime_type);
}
if (g_strcmp0 (mime_type, "text/html") == 0) {
emr->priv->ret_mime_type = g_strconcat (mime_type, "; charset=\"UTF-8\"", NULL);
g_free (mime_type);
} else {
emr->priv->ret_mime_type = mime_type;
}
d(printf("Content-Type: %s\n", emr->priv->ret_mime_type));
return emr->priv->ret_mime_type;
}
static const char *data_schemes[] = { "mail", "evo-file", "evo-http", "evo-https", "gtk-stock", NULL };
static void
e_mail_request_class_init (EMailRequestClass *class)
{
GObjectClass *object_class;
SoupRequestClass *request_class;
g_type_class_add_private (class, sizeof (EMailRequestPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->finalize = mail_request_finalize;
request_class = SOUP_REQUEST_CLASS (class);
request_class->schemes = data_schemes;
request_class->send_async = mail_request_send_async;
request_class->send_finish = mail_request_send_finish;
request_class->get_content_type = mail_request_get_content_type;
request_class->get_content_length = mail_request_get_content_length;
request_class->check_uri = mail_request_check_uri;
}
static void
e_mail_request_init (EMailRequest *request)
{
request->priv = E_MAIL_REQUEST_GET_PRIVATE (request);
}