Revision 53f2e14fc0fc015621bb0f49ea216c2c513ee2eb authored by johannes hanika on 23 December 2016, 10:38:36 UTC, committed by johannes hanika on 23 December 2016, 10:38:36 UTC
1 parent 4d54ba5
http_server.c
/*
* This file is part of darktable,
* copyright (c) 2015 tobias ellinghaus.
*
* darktable 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 3 of the License, or
* (at your option) any later version.
*
* darktable 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 darktable. If not, see <http://www.gnu.org/licenses/>.
*/
#include <glib/gi18n.h>
#include <stdio.h>
#include <stdlib.h>
#include "common/darktable.h"
#include "common/http_server.h"
#ifndef SOUP_CHECK_VERSION
// SOUP_CHECK_VERSION was introduced only in 2.42
#define SOUP_CHECK_VERSION(x, y, z) false
#endif
#if !SOUP_CHECK_VERSION(2, 48, 0)
#define OLD_API
#endif
typedef struct _connection_t
{
const char *id;
dt_http_server_t *server;
dt_http_server_callback callback;
gpointer user_data;
} _connection_t;
static const char reply[]
= "<!DOCTYPE html>\n"
"<html>\n"
"<head>\n"
"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n"
"<title>%s</title>\n"
"<style>\n"
"html {\n"
" background-color: #575656;\n"
" font-family: \"Lucida Grande\",Verdana,\"Bitstream Vera Sans\",Arial,sans-serif;\n"
" font-size: 12px;\n"
" padding: 50px 100px 50px 100px;\n"
"}\n"
"#content {\n"
" background-color: #cfcece;\n"
" border: 1px solid #000;\n"
" padding: 0px 40px 40px 40px;\n"
"}\n"
"</style>\n"
"<script>\n"
" if(window.location.hash && %d) {\n"
" var hash = window.location.hash.substring(1);\n"
" window.location.search = hash;\n"
" }\n"
"</script>\n"
"</head>\n"
"<body><div id=\"content\">\n"
"<div style=\"font-size: 42pt; font-weight: bold; color: white; text-align: right;\">%s</div>\n"
"%s\n"
"</div>\n"
"</body>\n"
"</html>";
static void _request_finished_callback(SoupServer *server, SoupMessage *message, SoupClientContext *client,
gpointer user_data)
{
dt_http_server_kill((dt_http_server_t *)user_data);
}
// this is always in the gui thread
static void _new_connection(SoupServer *server, SoupMessage *msg, const char *path, GHashTable *query,
SoupClientContext *client, gpointer user_data)
{
_connection_t *params = (_connection_t *)user_data;
gboolean res = TRUE;
if(msg->method != SOUP_METHOD_GET)
{
soup_message_set_status(msg, SOUP_STATUS_NOT_IMPLEMENTED);
goto end;
}
char *page_title = g_strdup_printf(_("darktable ยป %s"), params->id);
const char *title = _(params->id);
const char *body = _("<h1>Sorry,</h1><p>something went wrong. Please try again.</p>");
res = params->callback(query, params->user_data);
if(res)
body = _("<h1>Thank you,</h1><p>everything should have worked, you can <b>close</b> your browser now and "
"<b>go back</b> to darktable.</p>");
char *resp_body = g_strdup_printf(reply, page_title, res ? 0 : 1, title, body);
size_t resp_length = strlen(resp_body);
g_free(page_title);
soup_message_set_status(msg, SOUP_STATUS_OK);
soup_message_set_response(msg, "text/html", SOUP_MEMORY_TAKE, resp_body, resp_length);
end:
if(res)
{
dt_http_server_t *http_server = params->server;
soup_server_remove_handler(server, path);
g_signal_connect(G_OBJECT(server), "request-finished", G_CALLBACK(_request_finished_callback), http_server);
}
}
dt_http_server_t *dt_http_server_create(const int *ports, const int n_ports, const char *id,
const dt_http_server_callback callback, gpointer user_data)
{
SoupServer *httpserver = NULL;
int port = 0;
#ifdef OLD_API
dt_print(DT_DEBUG_CONTROL, "[http server] using the old libsoup api\n");
for(int i = 0; i < n_ports; i++)
{
port = ports[i];
SoupAddress *httpaddress = soup_address_new("127.0.0.1", port);
if(!httpaddress)
{
fprintf(stderr, "couldn't create libsoup httpaddress on port %d\n", port);
return NULL;
}
if(soup_address_resolve_sync(httpaddress, NULL) != SOUP_STATUS_OK)
{
fprintf(stderr, "error: can't resolve 127.0.0.1:%d\n", port);
return NULL;
}
httpserver = soup_server_new(SOUP_SERVER_SERVER_HEADER, "darktable internal server", "interface",
httpaddress, NULL);
if(httpserver) break;
g_object_unref(httpaddress);
}
if(httpserver == NULL)
{
fprintf(stderr, "error: couldn't create libsoup httpserver\n");
return NULL;
}
#else
dt_print(DT_DEBUG_CONTROL, "[http server] using the new libsoup api\n");
httpserver = soup_server_new(SOUP_SERVER_SERVER_HEADER, "darktable internal server", NULL);
if(httpserver == NULL)
{
fprintf(stderr, "error: couldn't create libsoup httpserver\n");
return NULL;
}
for(int i = 0; i < n_ports; i++)
{
port = ports[i];
if(soup_server_listen_local(httpserver, port, 0, NULL)) break;
port = 0;
}
if(port == 0)
{
fprintf(stderr, "error: can't bind to any port from our pool\n");
return NULL;
}
#endif
dt_http_server_t *server = (dt_http_server_t *)malloc(sizeof(dt_http_server_t));
server->server = httpserver;
_connection_t *params = (_connection_t *)malloc(sizeof(_connection_t));
params->id = id;
params->server = server;
params->callback = callback;
params->user_data = user_data;
char *path = g_strdup_printf("/%s", id);
server->url = g_strdup_printf("http://localhost:%d/%s", port, id);
soup_server_add_handler(httpserver, path, _new_connection, params, free);
g_free(path);
#ifdef OLD_API
soup_server_run_async(httpserver);
#endif
dt_print(DT_DEBUG_CONTROL, "[http server] listening on %s\n", server->url);
return server;
}
void dt_http_server_kill(dt_http_server_t *server)
{
if(server->server)
{
soup_server_disconnect(server->server);
g_object_unref(server->server);
server->server = NULL;
}
g_free(server->url);
server->url = NULL;
free(server);
}
// modelines: These editor modelines have been set for all relevant files by tools/update_modelines.sh
// vim: shiftwidth=2 expandtab tabstop=2 cindent
// kate: tab-indents: off; indent-width 2; replace-tabs on; indent-mode cstyle; remove-trailing-spaces modified;
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