top: add -m ("memory") option

[oweals/busybox.git] / loginutils / passwd.c

diff --git a/loginutils/passwd.c b/loginutils/passwd.c
index 0df084e5a0ed3b913900844f7cb7a972568d2250..7b93713b9cdeabfee7160d9343c8caee818bedef 100644 (file)
--- a/loginutils/passwd.c
+++ b/loginutils/passwd.c
@@ -2,7 +2,6 @@
 /*
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
-
 #include "libbb.h"
 #include <syslog.h>
 
@@ -16,33 +15,35 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo)
        char salt[sizeof("$N$XXXXXXXX")]; /* "$N$XXXXXXXX" or "XX" */
        char *orig = (char*)"";
        char *newp = NULL;
-       char *cipher = NULL;
        char *cp = NULL;
        char *ret = NULL; /* failure so far */
 
        if (myuid && pw->pw_passwd[0]) {
-               orig = bb_askpass(0, "Old password:"); /* returns ptr to static */
+               char *encrypted;
+
+               orig = bb_ask_stdin("Old password:"); /* returns ptr to static */
                if (!orig)
                        goto err_ret;
-               cipher = pw_encrypt(orig, pw->pw_passwd); /* returns ptr to static */
-               if (strcmp(cipher, pw->pw_passwd) != 0) {
-                       syslog(LOG_WARNING, "incorrect password for '%s'",
+               encrypted = pw_encrypt(orig, pw->pw_passwd, 1); /* returns malloced str */
+               if (strcmp(encrypted, pw->pw_passwd) != 0) {
+                       syslog(LOG_WARNING, "incorrect password for %s",
                                pw->pw_name);
                        bb_do_delay(FAIL_DELAY);
                        puts("Incorrect password");
                        goto err_ret;
                }
+               if (ENABLE_FEATURE_CLEAN_UP) free(encrypted);
        }
-       orig = xstrdup(orig); /* or else bb_askpass() will destroy it */
-       newp = bb_askpass(0, "New password:"); /* returns ptr to static */
+       orig = xstrdup(orig); /* or else bb_ask_stdin() will destroy it */
+       newp = bb_ask_stdin("New password:"); /* returns ptr to static */
        if (!newp)
                goto err_ret;
-       newp = xstrdup(newp); /* we are going to bb_askpass() again, so save it */
+       newp = xstrdup(newp); /* we are going to bb_ask_stdin() again, so save it */
        if (ENABLE_FEATURE_PASSWD_WEAK_CHECK
         && obscure(orig, newp, pw) && myuid)
                goto err_ret; /* non-root is not allowed to have weak passwd */
 
-       cp = bb_askpass(0, "Retype password:");
+       cp = bb_ask_stdin("Retype password:");
        if (!cp)
                goto err_ret;
        if (strcmp(cp, newp)) {
@@ -55,8 +56,8 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo)
                strcpy(salt, "$1$");
                crypt_make_salt(salt + 3, 4, 0);
        }
-       /* pw_encrypt returns ptr to static */
-       ret = xstrdup(pw_encrypt(newp, salt));
+       /* pw_encrypt returns malloced str */
+       ret = pw_encrypt(newp, salt, 1);
        /* whee, success! */
 
  err_ret:
@@ -64,13 +65,12 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo)
        if (ENABLE_FEATURE_CLEAN_UP) free(orig);
        nuke_str(newp);
        if (ENABLE_FEATURE_CLEAN_UP) free(newp);
-       nuke_str(cipher);
        nuke_str(cp);
        return ret;
 }
 
 int passwd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int passwd_main(int argc, char **argv)
+int passwd_main(int argc UNUSED_PARAM, char **argv)
 {
        enum {
                OPT_algo = 0x1, /* -a - password algorithm */
@@ -99,7 +99,7 @@ int passwd_main(int argc, char **argv)
 #endif
 
        logmode = LOGMODE_BOTH;
-       openlog(applet_name, LOG_NOWAIT, LOG_AUTH);
+       openlog(applet_name, 0, LOG_AUTH);
        opt = getopt32(argv, "a:lud", &opt_a);
        //argc -= optind;
        argv += optind;
@@ -114,11 +114,10 @@ int passwd_main(int argc, char **argv)
                bb_show_usage();
 
        /* Will complain and die if username not found */
-       myname = xstrdup(bb_getpwuid(NULL, -1, myuid));
+       myname = xstrdup(xuid2uname(myuid));
        name = argv[0] ? argv[0] : myname;
 
-       pw = getpwnam(name);
-       if (!pw) bb_error_msg_and_die("unknown user %s", name);
+       pw = xgetpwnam(name);
        if (myuid && pw->pw_uid != myuid) {
                /* LOGMODE_BOTH */
                bb_error_msg_and_die("%s can't change password for %s", myname, name);
@@ -171,20 +170,22 @@ int passwd_main(int argc, char **argv)
 
        rlimit_fsize.rlim_cur = rlimit_fsize.rlim_max = 512L * 30000;
        setrlimit(RLIMIT_FSIZE, &rlimit_fsize);
-       signal(SIGHUP, SIG_IGN);
-       signal(SIGINT, SIG_IGN);
-       signal(SIGQUIT, SIG_IGN);
+       bb_signals(0
+               + (1 << SIGHUP)
+               + (1 << SIGINT)
+               + (1 << SIGQUIT)
+               , SIG_IGN);
        umask(077);
        xsetuid(0);
 
 #if ENABLE_FEATURE_SHADOWPASSWDS
        filename = bb_path_shadow_file;
-       rc = update_passwd(bb_path_shadow_file, name, newp);
+       rc = update_passwd(bb_path_shadow_file, name, newp, NULL);
        if (rc == 0) /* no lines updated, no errors detected */
 #endif
        {
                filename = bb_path_passwd_file;
-               rc = update_passwd(bb_path_passwd_file, name, newp);
+               rc = update_passwd(bb_path_passwd_file, name, newp, NULL);
        }
        /* LOGMODE_BOTH */
        if (rc < 0)