Add 'mut/surf/' from commit '276070058769694c6039122c8e3f8ee0a6f08040'

git-subtree-dir: mut/surf
git-subtree-mainline: 8abd688c9465bd522d9003fb6809cd3cc2e76211
git-subtree-split: 276070058769694c6039122c8e3f8ee0a6f08040

1 files changed, 106 insertions, 0 deletions

diff --git a/mut/surf/webext-surf.c b/mut/surf/webext-surf.c
new file mode 100644
index 0000000..d087219
--- /dev/null
+++ b/mut/surf/webext-surf.c
@@ -0,0 +1,106 @@
+#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;
+}
+
+G_MODULE_EXPORT void
+webkit_web_extension_initialize_with_user_data(WebKitWebExtension *e,
+                                               const GVariant *gv)
+{
+	GIOChannel *gchansock;
+
+	webext = e;
+
+	g_variant_get(gv, "i", &sock);
+
+	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);
+}