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#include <sys/socket.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <gio/gio.h>
#include <webkit2/webkit-web-extension.h>
#include <webkitdom/webkitdom.h>
#include <webkitdom/WebKitDOMDOMWindowUnstable.h>
#include "common.h"
#define LENGTH(x) (sizeof(x) / sizeof(x[0]))
static WebKitWebExtension *webext;
static int sock;
static void
msgsurf(guint64 pageid, const char *s)
{
static char msg[MSGBUFSZ];
size_t sln = strlen(s);
int ret;
if ((ret = snprintf(msg, sizeof(msg), "%c%s", pageid, s))
>= sizeof(msg)) {
fprintf(stderr, "webext: msg: message too long: %d\n", ret);
return;
}
if (send(sock, msg, ret, 0) < 0)
fprintf(stderr, "webext: error sending: %s\n", msg+1);
}
static gboolean
readsock(GIOChannel *s, GIOCondition c, gpointer unused)
{
static char js[48], msg[MSGBUFSZ];
WebKitWebPage *page;
JSCContext *jsc;
GError *gerr = NULL;
gsize msgsz;
if (g_io_channel_read_chars(s, msg, sizeof(msg), &msgsz, &gerr) !=
G_IO_STATUS_NORMAL) {
if (gerr) {
fprintf(stderr, "webext: error reading socket: %s\n",
gerr->message);
g_error_free(gerr);
}
return TRUE;
}
if (msgsz < 2) {
fprintf(stderr, "webext: readsock: message too short: %d\n",
msgsz);
return TRUE;
}
if (!(page = webkit_web_extension_get_page(webext, msg[0])))
return TRUE;
jsc = webkit_frame_get_js_context(webkit_web_page_get_main_frame(page));
switch (msg[1]) {
case 'h':
if (msgsz != 3)
return TRUE;
snprintf(js, sizeof(js),
"window.scrollBy(window.innerWidth/100*%d,0);",
msg[2]);
jsc_context_evaluate(jsc, js, -1);
break;
case 'v':
if (msgsz != 3)
return TRUE;
snprintf(js, sizeof(js),
"window.scrollBy(0,window.innerHeight/100*%d);",
msg[2]);
jsc_context_evaluate(jsc, js, -1);
break;
}
return TRUE;
}
static void
pageusermessagereply(GObject *o, GAsyncResult *r, gpointer page)
{
WebKitUserMessage *m;
GUnixFDList *gfd;
GIOChannel *gchansock;
const char *name;
int nfd;
m = webkit_web_page_send_message_to_view_finish(page, r, NULL);
name = webkit_user_message_get_name(m);
if (strcmp(name, "surf-pipe") != 0) {
fprintf(stderr, "webext-surf: Unknown User Reply: %s\n", name);
return;
}
gfd = webkit_user_message_get_fd_list(m);
if ((nfd = g_unix_fd_list_get_length(gfd)) != 1) {
fprintf(stderr, "webext-surf: Too many file-descriptors: %d\n", nfd);
return;
}
sock = g_unix_fd_list_get(gfd, 0, NULL);
gchansock = g_io_channel_unix_new(sock);
g_io_channel_set_encoding(gchansock, NULL, NULL);
g_io_channel_set_flags(gchansock, g_io_channel_get_flags(gchansock)
| G_IO_FLAG_NONBLOCK, NULL);
g_io_channel_set_close_on_unref(gchansock, TRUE);
g_io_add_watch(gchansock, G_IO_IN, readsock, NULL);
}
void
pagecreated(WebKitWebExtension *e, WebKitWebPage *p, gpointer unused)
{
WebKitUserMessage *msg;
msg = webkit_user_message_new("page-created", NULL);
webkit_web_page_send_message_to_view(p, msg, NULL, pageusermessagereply, p);
}
G_MODULE_EXPORT void
webkit_web_extension_initialize(WebKitWebExtension *e)
{
webext = e;
g_signal_connect(G_OBJECT(e), "page-created",
G_CALLBACK(pagecreated), NULL);
}
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