tCommunicate through a Unix socket instead of a pipe pair - surf - surf browser, a WebKit2GTK based browser
Log
Files
Refs
README
LICENSE
---
commit e92fd1aa5f38c399f8fc5d263026fbd9d34ddfbb
parent f61cfc720c598491d7a93c9f314ceae349e00450
Author: Quentin Rameau 
Date:   Sat,  7 Sep 2019 13:20:09 +0200

Communicate through a Unix socket instead of a pipe pair

Diffstat:
  M surf.c                              |      62 ++++++++++++++++---------------
  M webext-surf.c                       |      60 +++++++++++++++++--------------

2 files changed, 65 insertions(+), 57 deletions(-)
---
diff --git a/surf.c b/surf.c
t@@ -3,6 +3,7 @@
  * To understand surf, start reading main().
  */
 #include 
+#include 
 #include 
 #include 
 #include 
t@@ -187,7 +188,7 @@ static gboolean buttonreleased(GtkWidget *w, GdkEvent *e, Client *c);
 static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event,
                                 gpointer d);
 static gboolean winevent(GtkWidget *w, GdkEvent *e, Client *c);
-static gboolean readpipe(GIOChannel *s, GIOCondition ioc, gpointer unused);
+static gboolean readsock(GIOChannel *s, GIOCondition ioc, gpointer unused);
 static void showview(WebKitWebView *v, Client *c);
 static GtkWidget *createwindow(Client *c);
 static gboolean loadfailedtls(WebKitWebView *v, gchar *uri,
t@@ -253,7 +254,7 @@ static char *stylefile;
 static const char *useragent;
 static Parameter *curconfig;
 static int modparams[ParameterLast];
-static int pipein[2], pipeout[2];
+static int spair[2];
 char *argv0;
 
 static ParamName loadtransient[] = {
t@@ -359,13 +360,15 @@ setup(void)
 
         gdkkb = gdk_seat_get_keyboard(gdk_display_get_default_seat(gdpy));
 
-        if (pipe(pipeout) < 0 || pipe(pipein) < 0) {
-                fputs("Unable to create pipes\n", stderr);
+        if (socketpair(AF_UNIX, SOCK_DGRAM, 0, spair) < 0) {
+                fputs("Unable to create sockets\n", stderr);
+                spair[0] = spair[1] = -1;
         } else {
-                gchanin = g_io_channel_unix_new(pipein[0]);
+                gchanin = g_io_channel_unix_new(spair[0]);
                 g_io_channel_set_encoding(gchanin, NULL, NULL);
+                g_io_channel_set_flags(gchanin, G_IO_FLAG_NONBLOCK, NULL);
                 g_io_channel_set_close_on_unref(gchanin, TRUE);
-                g_io_add_watch(gchanin, G_IO_IN, readpipe, NULL);
+                g_io_add_watch(gchanin, G_IO_IN, readsock, NULL);
         }
 
 
t@@ -1054,8 +1057,8 @@ spawn(Client *c, const Arg *a)
         if (fork() == 0) {
                 if (dpy)
                         close(ConnectionNumber(dpy));
-                close(pipein[0]);
-                close(pipeout[1]);
+                close(spair[0]);
+                close(spair[1]);
                 setsid();
                 execvp(((char **)a->v)[0], (char **)a->v);
                 fprintf(stderr, "%s: execvp %s", argv0, ((char **)a->v)[0]);
t@@ -1089,8 +1092,8 @@ cleanup(void)
         while (clients)
                 destroyclient(clients);
 
-        close(pipein[0]);
-        close(pipeout[1]);
+        close(spair[0]);
+        close(spair[1]);
         g_free(cookiefile);
         g_free(scriptfile);
         g_free(stylefile);
t@@ -1233,30 +1236,26 @@ newview(Client *c, WebKitWebView *rv)
 }
 
 static gboolean
-readpipe(GIOChannel *s, GIOCondition ioc, gpointer unused)
+readsock(GIOChannel *s, GIOCondition ioc, gpointer unused)
 {
-        static char msg[MSGBUFSZ], msgsz;
+        static char msg[MSGBUFSZ];
         GError *gerr = NULL;
+        gsize msgsz;
 
-        if (g_io_channel_read_chars(s, msg, sizeof(msg), NULL, &gerr) !=
+        if (g_io_channel_read_chars(s, msg, sizeof(msg), &msgsz, &gerr) !=
             G_IO_STATUS_NORMAL) {
-                fprintf(stderr, "surf: error reading pipe: %s\n",
-                        gerr->message);
-                g_error_free(gerr);
+                if (gerr) {
+                        fprintf(stderr, "surf: error reading socket: %s\n",
+                                gerr->message);
+                        g_error_free(gerr);
+                }
                 return TRUE;
         }
-        if ((msgsz = msg[0]) < 3) {
+        if (msgsz < 2) {
                 fprintf(stderr, "surf: message too short: %d\n", msgsz);
                 return TRUE;
         }
 
-        switch (msg[2]) {
-        case 'i':
-                close(pipein[1]);
-                close(pipeout[0]);
-                break;
-        }
-
         return TRUE;
 }
 
t@@ -1265,10 +1264,10 @@ initwebextensions(WebKitWebContext *wc, Client *c)
 {
         GVariant *gv;
 
-        if (!pipeout[0] || !pipein[1])
+        if (spair[1] < 0)
                 return;
 
-        gv = g_variant_new("(ii)", pipeout[0], pipein[1]);
+        gv = g_variant_new("i", spair[1]);
 
         webkit_web_context_set_web_extensions_initialization_user_data(wc, gv);
         webkit_web_context_set_web_extensions_directory(wc, WEBEXTDIR);
t@@ -1874,15 +1873,18 @@ msgext(Client *c, char type, const Arg *a)
         static char msg[MSGBUFSZ];
         int ret;
 
-        if ((ret = snprintf(msg, sizeof(msg), "%c%c%c%c",
-                            4, c->pageid, type, a->i))
+        if (spair[0] < 0)
+                return;
+
+        if ((ret = snprintf(msg, sizeof(msg), "%c%c%c", c->pageid, type, a->i))
             >= sizeof(msg)) {
                 fprintf(stderr, "surf: message too long: %d\n", ret);
                 return;
         }
 
-        if (pipeout[1] && write(pipeout[1], msg, sizeof(msg)) < 0)
-                fprintf(stderr, "surf: error sending: %.*s\n", ret-2, msg+2);
+        if (send(spair[0], msg, ret, 0) != ret)
+                fprintf(stderr, "surf: error sending: %d%c%d (%dB)\n",
+                        c->pageid, type, a->i, ret);
 }
 
 void
diff --git a/webext-surf.c b/webext-surf.c
t@@ -1,6 +1,8 @@
+#include 
 #include 
 #include 
 #include 
+#include 
 #include 
 
 #include 
t@@ -18,7 +20,7 @@ typedef struct Page {
         struct Page *next;
 } Page;
 
-static int pipein, pipeout;
+static int sock;
 static Page *pages;
 
 Page *
t@@ -47,60 +49,64 @@ msgsurf(Page *p, const char *s)
         size_t sln = strlen(s);
         int ret;
 
-        if ((ret = snprintf(msg, sizeof(msg), "%c%c%s",
-                            2 + sln, p ? p->id : 0, s))
+        if ((ret = snprintf(msg, sizeof(msg), "%c%s", p ? p->id : 0, s))
             >= sizeof(msg)) {
-                fprintf(stderr, "webext: message too long: %d\n", ret);
+                fprintf(stderr, "webext: msg: message too long: %d\n", ret);
                 return;
         }
 
-        if (pipeout && write(pipeout, msg, sizeof(msg)) < 0)
-                fprintf(stderr, "webext: error sending: %.*s\n", ret-2, msg+2);
+        if (send(sock, msg, ret, 0) < 0)
+                fprintf(stderr, "webext: error sending: %s\n", msg+1);
 }
 
 static gboolean
-readpipe(GIOChannel *s, GIOCondition c, gpointer unused)
+readsock(GIOChannel *s, GIOCondition c, gpointer unused)
 {
-        static char msg[MSGBUFSZ], msgsz;
+        static char msg[MSGBUFSZ];
         WebKitDOMDOMWindow *view;
         GError *gerr = NULL;
+        gsize msgsz;
         glong wh, ww;
         Page *p;
 
-        if (g_io_channel_read_chars(s, msg, LENGTH(msg), NULL, &gerr) !=
+        if (g_io_channel_read_chars(s, msg, LENGTH(msg), &msgsz, &gerr) !=
             G_IO_STATUS_NORMAL) {
-                fprintf(stderr, "webext: error reading pipe: %s\n",
-                        gerr->message);
-                g_error_free(gerr);
+                if (gerr) {
+                        fprintf(stderr, "webext: error reading socket: %s\n",
+                                gerr->message);
+                        g_error_free(gerr);
+                }
                 return TRUE;
         }
-        if ((msgsz = msg[0]) < 3) {
-                fprintf(stderr, "webext: message too short: %d\n", msgsz);
+
+        if (msgsz < 2) {
+                fprintf(stderr, "webext: readsock: message too short: %d\n",
+                        msgsz);
                 return TRUE;
         }
 
         for (p = pages; p; p = p->next) {
-                if (p->id == msg[1])
+                if (p->id == msg[0])
                         break;
         }
         if (!p || !(view = webkit_dom_document_get_default_view(
                     webkit_web_page_get_dom_document(p->webpage))))
                 return TRUE;
 
-        switch (msg[2]) {
+        switch (msg[1]) {
         case 'h':
-                if (msgsz != 4)
+                if (msgsz != 3)
                         return TRUE;
                 ww = webkit_dom_dom_window_get_inner_width(view);
                 webkit_dom_dom_window_scroll_by(view,
-                                                (ww / 100) * msg[3], 0);
+                                                (ww / 100) * msg[2], 0);
                 break;
         case 'v':
-                if (msgsz != 4)
+                if (msgsz != 3)
                         return TRUE;
                 wh = webkit_dom_dom_window_get_inner_height(view);
                 webkit_dom_dom_window_scroll_by(view,
-                                                0, (wh / 100) * msg[3]);
+                                                0, (wh / 100) * msg[2]);
                 break;
         }
 
t@@ -116,15 +122,15 @@ webpagecreated(WebKitWebExtension *e, WebKitWebPage *wp, gpointer unused)
 G_MODULE_EXPORT void
 webkit_web_extension_initialize_with_user_data(WebKitWebExtension *e, GVariant *gv)
 {
-        GIOChannel *gchanpipe;
+        GIOChannel *gchansock;
 
         g_signal_connect(e, "page-created", G_CALLBACK(webpagecreated), NULL);
 
-        g_variant_get(gv, "(ii)", &pipein, &pipeout);
-        msgsurf(NULL, "i");
+        g_variant_get(gv, "i", &sock);
 
-        gchanpipe = g_io_channel_unix_new(pipein);
-        g_io_channel_set_encoding(gchanpipe, NULL, NULL);
-        g_io_channel_set_close_on_unref(gchanpipe, TRUE);
-        g_io_add_watch(gchanpipe, G_IO_IN, readpipe, NULL);
+        gchansock = g_io_channel_unix_new(sock);
+        g_io_channel_set_encoding(gchansock, NULL, NULL);
+        g_io_channel_set_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);
 }