busybox/loginutils/chpasswd.c
Denis Vlasenko bdc88fdc68 rework long option handling. saves ~1.2k
function                                             old     new   delta
tar_longopts                                           -     222    +222
static.udhcpc_longopts                                 -     192    +192
start_stop_daemon_longopts                             -     150    +150
getopt32                                            1045    1185    +140
static.wget_longopts                                   -     111    +111
static.od_longopts                                     -     105    +105
getopt_longopts                                        -      96     +96
install_longopts                                       -      67     +67
ipcalc_longopts                                        -      63     +63
static.hwclock_longopts                                -      54     +54
ftpgetput_longopts                                     -      52     +52
static.dumpleases_longopts                             -      32     +32
env_longopts                                           -      31     +31
runparts_longopts                                      -      30     +30
mv_longopts                                            -      24     +24
mkdir_longopts                                         -      19     +19
find_pair                                            164     180     +16
bb_null_long_options                                   -      16     +16
setconsole_longopts                                    -      10     +10
display_speed                                         91      98      +7
collect_blk                                          467     474      +7
show_color                                             4       1      -3
ls_main                                              913     904      -9
bb_default_long_options                               16       -     -16
ls_color_opt                                          32      10     -22
setconsole_long_options                               32       -     -32
arith                                               2077    2030     -47
mv_long_options                                       48       -     -48
mkdir_long_options                                    48       -     -48
env_long_options                                      48       -     -48
static.options                                       248     184     -64
runparts_long_options                                 80       -     -80
ftpgetput_long_options                                96       -     -96
static.hwclock_long_options                          112       -    -112
install_long_options                                 112       -    -112
static.long_options                                  144       -    -144
static.wget_long_options                             160       -    -160
longopts                                             160       -    -160
static.arg_options                                   304       -    -304
tar_long_options                                     320       -    -320
long_options                                         384       -    -384
------------------------------------------------------------------------------
(add/remove: 17/15 grow/shrink: 4/5 up/down: 1444/-2209)     Total: -765 bytes
   text    data     bss     dec     hex filename
 782618    1328   11900  795846   c24c6 busybox_old
 781354    1328   11900  794582   c1fd6 busybox_unstripped
2007-07-23 17:14:14 +00:00

74 lines
1.8 KiB
C

/* 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 char chpasswd_opts[] =
"encrypted\0" No_argument "e"
"md5\0" No_argument "m"
"\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! */
if (getuid())
bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
opt_complementary = "m--e:e--m";
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';
xuname2uid(name); /* dies if there is no such user */
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);
}
/* This is rather complex: if user is not found in /etc/shadow,
* we try to find & change his passwd in /etc/passwd */
#if ENABLE_FEATURE_SHADOWPASSWDS
rc = update_passwd(bb_path_shadow_file, name, pass);
if (rc == 0) /* no lines updated, no errors detected */
#endif
rc = update_passwd(bb_path_passwd_file, name, pass);
/* LOGMODE_BOTH logs to syslog also */
logmode = LOGMODE_BOTH;
if (rc < 0)
bb_error_msg_and_die("an error occurred updating password for %s", name);
if (rc)
bb_info_msg("Password for '%s' changed", name);
logmode = LOGMODE_STDIO;
free(name);
}
return 0;
}