GopherProxy

	passwd.c - ubase - suckless linux base utils
	git clone git://git.suckless.org/ubase
	Log
	Files
	Refs
	README
	LICENSE
	---
	passwd.c (1384B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <sys/resource.h>
	3 #include <sys/time.h>
	4
	5 #include <errno.h>
	6 #include <pwd.h>
	7 #include <shadow.h>
	8 #include <stdio.h>
	9 #include <stdlib.h>
	10 #include <string.h>
	11 #include <unistd.h>
	12
	13 #include "../passwd.h"
	14 #include "../text.h"
	15 #include "../util.h"
	16
	17 /* Returns -1 on error, 0 for incorrect password
	18 * and 1 if all went OK */
	19 int
	20 pw_check(const struct passwd pw, const char pass)
	21 {
	22 char cryptpass, p;
	23 struct spwd *spw;
	24
	25 p = pw->pw_passwd;
	26 if (p[0] == '!' \|\| p[0] == '*') {
	27 weprintf("denied\n");
	28 return -1;
	29 }
	30
	31 if (pw->pw_passwd[0] == '\0') {
	32 if (pass[0] == '\0')
	33 return 1;
	34 weprintf("incorrect password\n");
	35 return 0;
	36 }
	37
	38 if (pw->pw_passwd[0] == 'x' && pw->pw_passwd[1] == '\0') {
	39 errno = 0;
	40 spw = getspnam(pw->pw_name);
	41 if (!spw) {
	42 if (errno)
	43 weprintf("getspnam: %s:", pw->pw_name);
	44 else
	45 weprintf("who are you?\n");
	46 return -1;
	47 }
	48 p = spw->sp_pwdp;
	49 if (p[0] == '!' \|\| p[0] == '*') {
	50 weprintf("denied\n");
	51 return -1;
	52 }
	53 }
	54
	55 cryptpass = crypt(pass, p);
	56 if (!cryptpass) {
	57 weprintf("crypt:");
	58 return -1;
	59 }
	60 if (strcmp(cryptpass, p) != 0) {
	61 weprintf("incorrect password\n");
	62 return 0;
	63 }
	64 return 1;
	65 }
	66
	67 int
	68 pw_init(void)
	69 {
	70 struct rlimit rlim;
	71
	72 rlim.rlim_cur = 0;
	73 rlim.rlim_max = 0;
	74 if (setrlimit(RLIMIT_CORE, &rlim) < 0)
	75 eprintf("setrlimit:");
	76 return 0;
	77 }