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/* copyright (c) 2022 - 2024 grunfink et al. / MIT license */
#ifndef _XS_UNIX_SOCKET_H
#define _XS_UNIX_SOCKET_H
int xs_unix_socket_server(const char *path, const char *grp);
int xs_unix_socket_connect(const char *path);
#ifdef XS_IMPLEMENTATION
#include <sys/stat.h>
#include <sys/un.h>
#include <grp.h>
int xs_unix_socket_server(const char *path, const char *grp)
/* opens a unix-type server socket */
{
int rs = -1;
if ((rs = socket(AF_UNIX, SOCK_STREAM, 0)) != -1) {
struct sockaddr_un sun = {0};
mode_t mode = 0666;
sun.sun_family = AF_UNIX;
strncpy(sun.sun_path, path, sizeof(sun.sun_path));
unlink(path);
if (bind(rs, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
close(rs);
return -1;
}
listen(rs, SOMAXCONN);
if (grp != NULL) {
struct group *g = NULL;
/* if there is a group name, get its gid_t */
g = getgrnam(grp);
if (g != NULL && chown(path, -1, g->gr_gid) != -1)
mode = 0660;
}
chmod(path, mode);
}
return rs;
}
int xs_unix_socket_connect(const char *path)
/* connects to a unix-type socket */
{
int d = -1;
if ((d = socket(AF_UNIX, SOCK_STREAM, 0)) != -1) {
struct sockaddr_un sun = {0};
sun.sun_family = AF_UNIX;
strncpy(sun.sun_path, path, sizeof(sun.sun_path));
if (connect(d, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
close(d);
d = -1;
}
}
return d;
}
#endif /* XS_IMPLEMENTATION */
#endif /* _XS_UNIX_SOCKET_H */
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