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/* vi: set sw=4 ts=4: */
/*
* chpasswd.c
*
* Written for SLIND (from passwd.c) by Alexander Shishkin <virtuoso@slind.org>
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#if ENABLE_GETOPT_LONG
#include <getopt.h>
static const struct option chpasswd_opts[] = {
{ "encrypted", no_argument, NULL, 'e' },
{ "md5", no_argument, NULL, 'm' },
{ NULL, 0, NULL, 0 }
};
#endif
#define OPT_ENC 1
#define OPT_MD5 2
int chpasswd_main(int argc, char **argv);
int chpasswd_main(int argc, char **argv)
{
char *name, *pass;
char salt[sizeof("$N$XXXXXXXX")];
int opt, rc;
int rnd = rnd; /* we *want* it to be non-initialized! */
const char *pwfile = bb_path_passwd_file;
if (getuid() != 0)
bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
#if ENABLE_FEATURE_SHADOWPASSWDS
if (access(bb_path_shadow_file, F_OK) == 0)
pwfile = bb_path_shadow_file;
#endif
opt_complementary = "m--e";
USE_GETOPT_LONG(applet_long_options = chpasswd_opts;)
opt = getopt32(argc, argv, "em");
while ((name = xmalloc_getline(stdin)) != NULL) {
pass = strchr(name, ':');
if (!pass)
bb_error_msg_and_die("missing new password");
*pass++ = '\0';
//if (!getpwnam(name))
// bb_error_msg_and_die("unknown user %s", name);
if (!(opt & OPT_ENC)) {
rnd = crypt_make_salt(salt, 1, rnd);
if (opt & OPT_MD5) {
strcpy(salt, "$1$");
rnd = crypt_make_salt(salt + 3, 4, rnd);
}
pass = pw_encrypt(pass, salt);
}
rc = update_passwd(pwfile, name, pass);
/* LOGMODE_BOTH logs to syslog */
logmode = LOGMODE_BOTH;
if (rc < 0)
bb_error_msg_and_die("an error occurred updating %s", pwfile);
if (rc > 0)
bb_info_msg("Password for '%s' changed", name);
else
bb_info_msg("User '%s' not found", name);
logmode = LOGMODE_STDIO;
free(name);
}
return 0;
}
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