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	twebext-surf.c - surf - [fork] customized build of surf, the suckless webkit br…
	git clone git://src.adamsgaard.dk/surf
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	twebext-surf.c (2472B)
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	1 #include <sys/socket.h>
	2 #include <sys/stat.h>
	3 #include <fcntl.h>
	4 #include <inttypes.h>
	5 #include <limits.h>
	6 #include <stdio.h>
	7 #include <stdlib.h>
	8
	9 #include <gio/gio.h>
	10 #include <webkit2/webkit-web-extension.h>
	11 #include <webkitdom/webkitdom.h>
	12 #include <webkitdom/WebKitDOMDOMWindowUnstable.h>
	13
	14 #include "common.h"
	15
	16 #define LENGTH(x) (sizeof(x) / sizeof(x[0]))
	17
	18 static WebKitWebExtension *webext;
	19 static int sock;
	20
	21 static void
	22 msgsurf(guint64 pageid, const char *s)
	23 {
	24 static char msg[MSGBUFSZ];
	25 size_t sln = strlen(s);
	26 int ret;
	27
	28 if ((ret = snprintf(msg, sizeof(msg), "%c%s", pageid, s))
	29 >= sizeof(msg)) {
	30 fprintf(stderr, "webext: msg: message too long: %d\n", r…
	31 return;
	32 }
	33
	34 if (send(sock, msg, ret, 0) < 0)
	35 fprintf(stderr, "webext: error sending: %s\n", msg+1);
	36 }
	37
	38 static gboolean
	39 readsock(GIOChannel *s, GIOCondition c, gpointer unused)
	40 {
	41 static char js[48], msg[MSGBUFSZ];
	42 WebKitWebPage *page;
	43 JSCContext *jsc;
	44 GError *gerr = NULL;
	45 gsize msgsz;
	46
	47 if (g_io_channel_read_chars(s, msg, sizeof(msg), &msgsz, &gerr) …
	48 G_IO_STATUS_NORMAL) {
	49 if (gerr) {
	50 fprintf(stderr, "webext: error reading socket: %…
	51 gerr->message);
	52 g_error_free(gerr);
	53 }
	54 return TRUE;
	55 }
	56
	57 if (msgsz < 2) {
	58 fprintf(stderr, "webext: readsock: message too short: %d…
	59 msgsz);
	60 return TRUE;
	61 }
	62
	63 if (!(page = webkit_web_extension_get_page(webext, msg[0])))
	64 return TRUE;
	65
	66 jsc = webkit_frame_get_js_context(webkit_web_page_get_main_frame…
	67
	68 switch (msg[1]) {
	69 case 'h':
	70 if (msgsz != 3)
	71 return TRUE;
	72 snprintf(js, sizeof(js),
	73 "window.scrollBy(window.innerWidth/100*%d,0);",
	74 msg[2]);
	75 jsc_context_evaluate(jsc, js, -1);
	76 break;
	77 case 'v':
	78 if (msgsz != 3)
	79 return TRUE;
	80 snprintf(js, sizeof(js),
	81 "window.scrollBy(0,window.innerHeight/100*%d);",
	82 msg[2]);
	83 jsc_context_evaluate(jsc, js, -1);
	84 break;
	85 }
	86
	87 return TRUE;
	88 }
	89
	90 G_MODULE_EXPORT void
	91 webkit_web_extension_initialize_with_user_data(WebKitWebExtension *e,
	92 const GVariant *gv)
	93 {
	94 GIOChannel *gchansock;
	95
	96 webext = e;
	97
	98 g_variant_get(gv, "i", &sock);
	99
	100 gchansock = g_io_channel_unix_new(sock);
	101 g_io_channel_set_encoding(gchansock, NULL, NULL);
	102 g_io_channel_set_flags(gchansock, g_io_channel_get_flags(gchanso…
	103 \| G_IO_FLAG_NONBLOCK, NULL);
	104 g_io_channel_set_close_on_unref(gchansock, TRUE);
	105 g_io_add_watch(gchansock, G_IO_IN, readsock, NULL);
	106 }