chpasswd: now with svn add

1 files changed, 77 insertions, 0 deletions

diff --git a/loginutils/chpasswd.c b/loginutils/chpasswd.c
new file mode 100644
index 000000000..124fc86e2
--- /dev/null
+++ b/loginutils/chpasswd.c
@@ -0,0 +1,77 @@
+/* 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;
+}