+static char *sccsid = "@(#)newgrp.c 4.1 (Berkeley) 10/1/80";
#include <stdio.h>
#include <grp.h>
#include <pwd.h>
register i;
if(argc != 2) {
printf("usage: newgrp groupname\n");
- done();
+ exit(13);
}
if((grp=getgrnam(argv[1])) == NULL) {
printf("%s: no such group\n", argv[1]);
- done();
+ exit(13);
}
if((pwd=getpwuid(getuid())) == NULL) {
printf("You do not exist!\n");
- done();
+ exit(13);
}
for(i=0;grp->gr_mem[i];i++)
if(strcmp(grp->gr_mem[i], pwd->pw_name) == 0)
break;
if(grp->gr_mem[i] == 0 && strcmp(grp->gr_name,"other")) {
printf("Sorry\n");
- done();
+ exit(13);
}
if(grp->gr_passwd[0] != '\0' && pwd->pw_passwd[0] == '\0') {
if(strcmp(grp->gr_passwd, crypt(getpass("Password:"),grp->gr_passwd)) != 0) {
printf("Sorry\n");
- done();
+ exit(13);
}
}
- if(setgid(grp->gr_gid) < 0)
+ if(setgid(grp->gr_gid) < 0) {
perror("setgid");
- done();
-}
-
-done()
-{
- register i;
-
+ exit(13);
+ }
setuid(getuid());
for (i=3; i<15; i++)
close(i);
- execl("/bin/sh", "sh", 0);
+ execl((pwd->pw_shell[0]?pwd->pw_shell:"/bin/sh"), "-i", 0);
printf("No shell!\n");
exit(0);
}