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Port su(1) to use pw_check()

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sin 2014-06-09 10:55:41 +01:00
parent 77a2f9f92c
commit 12083d49e5
1 changed files with 5 additions and 46 deletions
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51
su.c
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@ -4,10 +4,10 @@
#include <errno.h>
#include <pwd.h>
#include <grp.h>
#include <shadow.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "passwd.h"
#include "config.h"
#include "util.h"
@ -27,9 +27,8 @@ static int pflag = 0;
int
main(int argc, char *argv[])
{
char *usr = "root", *pass, *cryptpass;
char *usr = "root", *pass;
char *shell;
struct spwd *spw;
struct passwd *pw;
char *newargv[2];
uid_t uid;
@ -59,55 +58,15 @@ main(int argc, char *argv[])
else if (!pw)
eprintf("who are you?\n");
switch (pw->pw_passwd[0]) {
case '!':
case '*':
eprintf("denied\n");
}
/* Empty password? Su now */
if (pw->pw_passwd[0] == '\0')
goto dosu;
uid = getuid();
if (uid) {
pass = getpass("Password: ");
putchar('\n');
pass = getpass("Password: "); putchar('\n');
if (!pass)
eprintf("getpass:");
if (pw_check(pw, pass) == 0)
eprintf("incorrect password\n");
}
if (pw->pw_passwd[0] == 'x' && pw->pw_passwd[1] == '\0') {
errno = 0;
spw = getspnam(usr);
if (errno)
eprintf("getspnam: %s:", usr);
else if (!spw)
eprintf("who are you?\n");
switch (spw->sp_pwdp[0]) {
case '!':
case '*':
eprintf("denied\n");
}
if (uid) {
cryptpass = crypt(pass, spw->sp_pwdp);
if (!cryptpass)
eprintf("crypt:");
if (strcmp(cryptpass, spw->sp_pwdp) != 0)
eprintf("incorrect password\n");
}
} else {
if (uid) {
cryptpass = crypt(pass, pw->pw_passwd);
if (!cryptpass)
eprintf("crypt:");
if (strcmp(cryptpass, pw->pw_passwd) != 0)
eprintf("login failed\n");
}
}
dosu:
if (initgroups(usr, pw->pw_gid) < 0)
eprintf("initgroups:");
if (setgid(pw->pw_gid) < 0)