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-rw-r--r--loginutils/chpasswd.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/loginutils/chpasswd.c b/loginutils/chpasswd.c
new file mode 100644
index 0000000..124fc86
--- /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;
+}