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patch for using UNIX domain sockets for control

This commit is contained in:
daniel@brinkers.de 2007-10-15 22:52:49 +02:00 committed by Julien Danjou
parent 866a75e76a
commit cb0080039e
1 changed files with 64 additions and 8 deletions
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72
awesome.c
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@ -26,6 +26,8 @@
#include <sys/select.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <fcntl.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
@ -45,6 +47,7 @@
#include "uicb.h"
#define CONTROL_FIFO_PATH ".awesome_ctl"
#define CONTROL_UNIX_SOCKET_PATH ".awesome_so_ctl"
static int (*xerrorxlib) (Display *, XErrorEvent *);
static Bool running = True;
@ -255,7 +258,7 @@ main(int argc, char *argv[])
{
char *fifopath, buf[1024];
const char *confpath = NULL, *homedir;
int r, cfd, xfd, e_dummy;
int r, cfd, xfd, e_dummy, csfd;
fd_set rd;
XEvent ev;
Display * dpy;
@ -267,7 +270,8 @@ main(int argc, char *argv[])
event_handler **handler;
Client **clients, **sel;
struct stat fifost;
ssize_t fifopath_len;
ssize_t path_len;
struct sockaddr_un addr;
if(argc >= 2)
{
@ -374,11 +378,11 @@ main(int argc, char *argv[])
/* construct fifo path */
homedir = getenv("HOME");
fifopath_len = a_strlen(homedir) + a_strlen(CONTROL_FIFO_PATH) + 2;
fifopath = p_new(char, fifopath_len);
a_strcpy(fifopath, fifopath_len, homedir);
a_strcat(fifopath, fifopath_len, "/");
a_strcat(fifopath, fifopath_len, CONTROL_FIFO_PATH);
path_len = a_strlen(homedir) + a_strlen(CONTROL_FIFO_PATH) + 2;
fifopath = p_new(char, path_len);
a_strcpy(fifopath, path_len, homedir);
a_strcat(fifopath, path_len, "/");
a_strcat(fifopath, path_len, CONTROL_FIFO_PATH);
if(lstat(fifopath, &fifost) == -1)
if(mkfifo(fifopath, 0600) == -1)
@ -386,14 +390,43 @@ main(int argc, char *argv[])
cfd = open(fifopath, O_RDONLY | O_NDELAY);
csfd = -1;
path_len = a_strlen(homedir) + a_strlen(CONTROL_UNIX_SOCKET_PATH) + 2;
if(path_len <= (int)sizeof(addr.sun_path))
{
a_strcpy(addr.sun_path, path_len, homedir);
a_strcat(addr.sun_path, path_len, "/");
a_strcat(addr.sun_path, path_len, CONTROL_UNIX_SOCKET_PATH);
csfd = socket(AF_UNIX, SOCK_DGRAM, 0);
if(csfd < 0)
perror("error opening UNIX domain socket");
addr.sun_family = AF_UNIX;
if(bind(csfd, (struct sockaddr *) &addr, SUN_LEN(&addr)))
{
if(errno == EADDRINUSE)
{
if(unlink(addr.sun_path))
perror("error unlinking existend file");
if(bind(csfd, (struct sockaddr *) &addr, SUN_LEN(&addr)))
perror("error binding UNIX domain socket");
}
else
perror("error binding UNIX domain socket");
}
}
else
fprintf(stderr, "error: path of control UNIX domain socket is too long");
/* main event loop, also reads status text from stdin */
while(running)
{
FD_ZERO(&rd);
if(cfd >= 0)
FD_SET(cfd, &rd);
if(csfd >= 0)
FD_SET(csfd, &rd);
FD_SET(xfd, &rd);
if(select(MAX(xfd, cfd) + 1, &rd, NULL, NULL, NULL) == -1)
if(select(MAX(xfd, MAX(csfd, cfd)) + 1, &rd, NULL, NULL, NULL) == -1)
{
if(errno == EINTR)
continue;
@ -416,6 +449,24 @@ main(int argc, char *argv[])
default:
parse_control(buf, awesomeconf);
}
if(csfd >= 0 && FD_ISSET(csfd, &rd))
switch (r = recv(csfd, buf, sizeof(buf)-1, MSG_TRUNC))
{
case -1:
perror("awesome: error reading UNIX domain socket");
a_strncpy(awesomeconf[0].statustext, sizeof(awesomeconf[0].statustext),
strerror(errno), sizeof(awesomeconf[0].statustext) - 1);
awesomeconf[0].statustext[sizeof(awesomeconf[0].statustext) - 1] = '\0';
csfd = -1;
break;
case 0:
break;
default:
if(r >= (int)sizeof(buf))
break;
buf[r] = '\0';
parse_control(buf, awesomeconf);
}
while(XPending(dpy))
{
@ -425,6 +476,11 @@ main(int argc, char *argv[])
}
}
if(csfd > 0 && close(csfd))
perror("error closing UNIX domain socket");
if(unlink(addr.sun_path))
perror("error unlinking UNIX domain socket");
p_delete(&fifopath);
cleanup(awesomeconf);