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Send message size inside messages through pipes

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This commit is contained in:
Quentin Rameau
2018-10-09 12:27:59 +02:00
parent 2b71a22755
commit 02541c3146
3 changed files with 39 additions and 26 deletions
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surf.c
+17 -9
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@@ -1209,20 +1209,22 @@ newview(Client *c, WebKitWebView *rv)
static gboolean
readpipe(GIOChannel *s, GIOCondition ioc, gpointer unused)
{
char msg[MSGBUFSZ];
gsize msgsz;
static char msg[MSGBUFSZ], msgsz;
GError *gerr = NULL;
if (g_io_channel_read_chars(s, msg, sizeof(msg), &msgsz, &gerr) !=
if (g_io_channel_read_chars(s, msg, sizeof(msg), NULL, &gerr) !=
G_IO_STATUS_NORMAL) {
fprintf(stderr, "surf: error reading pipe: %s\n",
gerr->message);
g_error_free(gerr);
return TRUE;
}
msg[msgsz] = '\0';
if ((msgsz = msg[0]) < 3) {
fprintf(stderr, "surf: message too short: %d\n", msgsz);
return TRUE;
}
switch (msg[1]) {
switch (msg[2]) {
case 'i':
close(pipein[1]);
close(pipeout[0]);
@@ -1843,12 +1845,18 @@ zoom(Client *c, const Arg *a)
static void
msgext(Client *c, char type, const Arg *a)
{
char msg[MSGBUFSZ] = { c->pageid, type, a->i, '\0' };
static char msg[MSGBUFSZ];
int ret;
if (pipeout[1]) {
if (write(pipeout[1], msg, sizeof(msg)) < 0)
fprintf(stderr, "surf: error sending: %s\n", msg);
if ((ret = snprintf(msg, sizeof(msg), "%c%c%c%c",
4, 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);
}
void