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Add users full set of groups to process permission list.

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This commit is contained in:
Adam Sutton 2012-07-25 14:34:52 +01:00
parent bc5937089d
commit 507392dd3c
1 changed files with 24 additions and 11 deletions
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35
src/main.c
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@ -83,6 +83,21 @@ doexit(int x)
running = 0;
}
static int
get_user_groups (const struct passwd *pw, gid_t* glist, size_t gmax)
{
int num = 0;
struct group *gr;
char **mem;
glist[num++] = pw->pw_gid;
for ( gr = getgrent(); (gr != NULL) && (num < gmax); gr = getgrent() ) {
if (gr->gr_gid == pw->pw_gid) continue;
for (mem = gr->gr_mem; *mem; mem++) {
if(!strcmp(*mem, pw->pw_name)) glist[num++] = gr->gr_gid;
}
}
return num;
}
/**
*
@ -308,11 +323,9 @@ main(int argc, char **argv)
signal(SIGPIPE, handle_sigpipe);
grp = getgrnam(groupnam ?: "video");
pw = usernam ? getpwnam(usernam) : NULL;
if(forkaway) {
grp = getgrnam(groupnam ?: "video");
pw = usernam ? getpwnam(usernam) : NULL;
if(daemon(0, 0)) {
exit(2);
@ -323,23 +336,23 @@ main(int argc, char **argv)
fclose(pidfile);
}
if(grp != NULL) {
if(grp != NULL) {
setgid(grp->gr_gid);
} else {
setgid(1);
}
if(pw != NULL) {
if (pw != NULL) {
gid_t glist[10];
int gnum = get_user_groups(pw, glist, 10);
setgroups(gnum, glist);
setuid(pw->pw_uid);
homedir = pw->pw_dir;
setenv("HOME", homedir, 1);
} else {
setuid(1);
}
if(pw != NULL) {
homedir = pw->pw_dir;
setenv("HOME", homedir, 1);
}
umask(0);
}