386BSD 0.1 development

Work on file usr/src/usr.bin/passwd/local_passwd.c

Co-Authored-By: Lynne Greer Jolitz <ljolitz@cardio.ucsf.edu>
Synthesized-from: 386BSD-0.1

diff --git a/usr/src/usr.bin/passwd/local_passwd.c b/usr/src/usr.bin/passwd/local_passwd.c
new file mode 100644 (file)
index 0000000..2e1eb53
--- /dev/null
+++ b/usr/src/usr.bin/passwd/local_passwd.c
@@ -0,0 +1,153 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)local_passwd.c     5.5 (Berkeley) 5/6/91";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdio.h>
+
+uid_t uid;
+
+char *progname = "passwd";
+char *tempname;
+
+local_passwd(uname)
+       char *uname;
+{
+       struct passwd *pw;
+       int pfd, tfd;
+       char *getnewpasswd();
+
+       if (!(pw = getpwnam(uname))) {
+               (void)fprintf(stderr, "passwd: unknown user %s.\n", uname);
+               exit(1);
+       }
+
+       uid = getuid();
+       if (uid && uid != pw->pw_uid) {
+               (void)fprintf(stderr, "passwd: %s\n", strerror(EACCES));
+               exit(1);
+       }
+
+       pw_init();
+       pfd = pw_lock();
+       tfd = pw_tmp();
+
+       /*
+        * Get the new password.  Reset passwd change time to zero; when
+        * classes are implemented, go and get the "offset" value for this
+        * class and reset the timer.
+        */
+       pw->pw_passwd = getnewpasswd(pw);
+       pw->pw_change = 0;
+       pw_copy(pfd, tfd, pw);
+
+       if (!pw_mkdb())
+               pw_error((char *)NULL, 0, 1);
+       exit(0);
+}
+
+char *
+getnewpasswd(pw)
+       register struct passwd *pw;
+{
+       register char *p, *t;
+       int tries;
+       char buf[_PASSWORD_LEN+1], salt[9], *crypt(), *getpass();
+
+       (void)printf("Changing local password for %s.\n", pw->pw_name);
+
+       if (uid && pw->pw_passwd &&
+#ifdef DES
+           strcmp(crypt(getpass("Old password:"), pw->pw_passwd),
+           pw->pw_passwd)) {
+#else
+           strcmp(getpass("Old password:"), pw->pw_passwd)) {
+#endif
+               errno = EACCES;
+               pw_error(NULL, 1, 1);
+       }
+
+       for (buf[0] = '\0', tries = 0;;) {
+               p = getpass("New password:");
+               if (!*p) {
+                       (void)printf("Password unchanged.\n");
+                       pw_error(NULL, 0, 0);
+               }
+               if (strlen(p) <= 5 && (uid != 0 || ++tries < 2)) {
+                       (void)printf("Please enter a longer password.\n");
+                       continue;
+               }
+               for (t = p; *t && islower(*t); ++t);
+               if (!*t && (uid != 0 || ++tries < 2)) {
+                       (void)printf("Please don't use an all-lower case password.\nUnusual capitalization, control characters or digits are suggested.\n");
+                       continue;
+               }
+               (void)strcpy(buf, p);
+               if (!strcmp(buf, getpass("Retype new password:")))
+                       break;
+               (void)printf("Mismatch; try again, EOF to quit.\n");
+       }
+       /* grab a random printable character that isn't a colon */
+       (void)srandom((int)time((time_t *)NULL));
+#ifdef NEWSALT
+       salt[0] = _PASSWORD_EFMT1;
+       to64(&salt[1], (long)(29 * 25), 4);
+       to64(&salt[5], random(), 4);
+#else
+       to64(&salt[0], random(), 2);
+#endif
+#ifdef DES
+       return(crypt(buf, salt));
+#else
+       return(buf);
+#endif
+}
+
+static unsigned char itoa64[] =                /* 0 ... 63 => ascii - 64 */
+       "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
+to64(s, v, n)
+       register char *s;
+       register long v;
+       register int n;
+{
+       while (--n >= 0) {
+               *s++ = itoa64[v&0x3f];
+               v >>= 6;
+       }
+}