RepoMirrors
/
abuild
mirror of https://gitlab.alpinelinux.org/alpine/abuild.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

abuild-sudo: fix segfault when there are no controlling term 

if there are no controlling reminal getlogin() may return NULL. We use
getpwuid() to try figure out the username and verify that we actually
have a username before we set environment USER.
This commit is contained in:
Natanael Copa 2017-07-17 17:24:07 +02:00
parent f92283f5b9
commit 6f60008bc4
1 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
abuild-sudo.c
View File

@ -12,6 +12,7 @@
#include <err.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -70,17 +71,28 @@ int main(int argc, const char *argv[])
const char *cmd;
const char *path;
int i;
struct passwd *pw;
grent = getgrnam(ABUILD_GROUP);
if (grent == NULL)
errx(1, "%s: Group not found", ABUILD_GROUP);
char *name = getlogin();
if (name == NULL) {
pw = getpwuid(getuid());
if (pw)
name = pw->pw_name;
}
if (!is_in_group(grent->gr_gid)) {
errx(1, "User %s is not a member of group %s\n",
name ? name : "(unknown)", ABUILD_GROUP);
}
setenv("USER", name, 1);
if (name) {
setenv("USER", name, 1);
} else {
warnx("Could not find username for uid %d\n", getuid());
}
cmd = strrchr(argv[0], '/');
if (cmd)