/*-
+ * SPDX-License-Identifier: BSD-4-Clause
+ *
* Copyright (c) 1990, 1993, 1994
* The Regents of the University of California. All rights reserved.
+ * Copyright (c) 2002 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * Portions of this software were developed for the FreeBSD Project by
+ * ThinkSec AS and NAI Labs, the Security Research Division of Network
+ * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include <ctype.h>
#include <err.h>
#include <errno.h>
-#include <md5.h>
#include <paths.h>
#include <pwd.h>
#include <stdio.h>
#include <unistd.h>
#include <pw_scan.h>
-#include <pw_util.h>
+#include <libutil.h>
#include "chpass.h"
-#ifdef YP
-#include "pw_yp.h"
-#endif /* YP */
-extern char *tempname;
+static int display(const char *tfn, struct passwd *pw);
+static struct passwd *verify(const char *tfn, struct passwd *pw);
-void
-edit(struct passwd *pw)
+struct passwd *
+edit(const char *tfn, struct passwd *pw)
{
- struct stat begin, end;
- char *begin_sum, *end_sum;
+ struct passwd *npw;
+ char *line;
+ size_t len;
+ if (display(tfn, pw) == -1)
+ return (NULL);
for (;;) {
- if (stat(tempname, &begin))
- pw_error(tempname, 1, 1);
- begin_sum = MD5File(tempname, (char *)NULL);
- pw_edit(1);
- if (stat(tempname, &end))
- pw_error(tempname, 1, 1);
- end_sum = MD5File(tempname, (char *)NULL);
- if ((begin.st_mtime == end.st_mtime) &&
- (strcmp(begin_sum, end_sum) == 0)) {
- warnx("no changes made");
- pw_error(NULL, 0, 0);
- }
- free(begin_sum);
- free(end_sum);
- if (verify(pw))
+ switch (pw_edit(1)) {
+ case -1:
+ return (NULL);
+ case 0:
+ return (pw_dup(pw));
+ default:
break;
- pw_prompt();
+ }
+ if ((npw = verify(tfn, pw)) != NULL)
+ return (npw);
+ free(npw);
+ printf("re-edit the password file? ");
+ fflush(stdout);
+ if ((line = fgetln(stdin, &len)) == NULL) {
+ warn("fgetln()");
+ return (NULL);
+ }
+ if (len > 0 && (*line == 'N' || *line == 'n'))
+ return (NULL);
}
}
* print out the file for the user to edit; strange side-effect:
* set conditional flag if the user gets to edit the shell.
*/
-void
-display(int fd, struct passwd *pw)
+static int
+display(const char *tfn, struct passwd *pw)
{
FILE *fp;
- char *bp, *p;
+ char *bp, *gecos, *p;
- if (!(fp = fdopen(fd, "w")))
- pw_error(tempname, 1, 1);
+ if ((fp = fopen(tfn, "w")) == NULL) {
+ warn("%s", tfn);
+ return (-1);
+ }
(void)fprintf(fp,
-#ifdef YP
- "#Changing %s information for %s.\n", _use_yp ? "NIS" : "user database", pw->pw_name);
- if (!uid && (!_use_yp || suser_override)) {
-#else
- "#Changing user database information for %s.\n", pw->pw_name);
- if (!uid) {
-#endif /* YP */
+ "#Changing user information for %s.\n", pw->pw_name);
+ if (master_mode) {
(void)fprintf(fp, "Login: %s\n", pw->pw_name);
(void)fprintf(fp, "Password: %s\n", pw->pw_passwd);
(void)fprintf(fp, "Uid [#]: %lu\n", (unsigned long)pw->pw_uid);
* necklace, but there's not much else to do.
*/
#else
- else if ((!list[E_SHELL].restricted && ok_shell(pw->pw_shell)) || !uid)
+ else if ((!list[E_SHELL].restricted && ok_shell(pw->pw_shell)) ||
+ master_mode)
/*
* If change not restrict (table.c) and standard shell
* OR if root, then allow editing of shell.
(void)fprintf(fp, "Shell: %s\n",
*pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
else
- list[E_SHELL].restricted = 1;
- bp = pw->pw_gecos;
+ list[E_SHELL].restricted = 1;
+
+ if ((bp = gecos = strdup(pw->pw_gecos)) == NULL) {
+ warn(NULL);
+ fclose(fp);
+ return (-1);
+ }
p = strsep(&bp, ",");
p = strdup(p ? p : "");
list[E_NAME].save = p;
- if (!list[E_NAME].restricted || !uid)
+ if (!list[E_NAME].restricted || master_mode)
(void)fprintf(fp, "Full Name: %s\n", p);
- p = strsep(&bp, ",");
+ p = strsep(&bp, ",");
p = strdup(p ? p : "");
list[E_LOCATE].save = p;
- if (!list[E_LOCATE].restricted || !uid)
+ if (!list[E_LOCATE].restricted || master_mode)
(void)fprintf(fp, "Office Location: %s\n", p);
- p = strsep(&bp, ",");
+ p = strsep(&bp, ",");
p = strdup(p ? p : "");
list[E_BPHONE].save = p;
- if (!list[E_BPHONE].restricted || !uid)
+ if (!list[E_BPHONE].restricted || master_mode)
(void)fprintf(fp, "Office Phone: %s\n", p);
- p = strsep(&bp, ",");
+ p = strsep(&bp, ",");
p = strdup(p ? p : "");
list[E_HPHONE].save = p;
- if (!list[E_HPHONE].restricted || !uid)
+ if (!list[E_HPHONE].restricted || master_mode)
(void)fprintf(fp, "Home Phone: %s\n", p);
bp = strdup(bp ? bp : "");
list[E_OTHER].save = bp;
- if (!list[E_OTHER].restricted || !uid)
+ if (!list[E_OTHER].restricted || master_mode)
(void)fprintf(fp, "Other information: %s\n", bp);
- (void)fchown(fd, getuid(), getgid());
+ free(gecos);
+
+ (void)fchown(fileno(fp), getuid(), getgid());
(void)fclose(fp);
+ return (0);
}
-int
-verify(struct passwd *pw)
+static struct passwd *
+verify(const char *tfn, struct passwd *pw)
{
+ struct passwd *npw;
ENTRY *ep;
- char *p;
+ char *buf, *p, *val;
struct stat sb;
FILE *fp;
- int len, line;
- static char buf[LINE_MAX];
+ int line;
+ size_t len;
- if (!(fp = fopen(tempname, "r")))
- pw_error(tempname, 1, 1);
- if (fstat(fileno(fp), &sb))
- pw_error(tempname, 1, 1);
+ if ((pw = pw_dup(pw)) == NULL)
+ return (NULL);
+ if ((fp = fopen(tfn, "r")) == NULL ||
+ fstat(fileno(fp), &sb) == -1) {
+ warn("%s", tfn);
+ free(pw);
+ return (NULL);
+ }
if (sb.st_size == 0) {
warnx("corrupted temporary file");
- goto bad;
+ fclose(fp);
+ free(pw);
+ return (NULL);
}
- line = 0;
- while (fgets(buf, sizeof(buf), fp)) {
- line++;
- if (!buf[0] || buf[0] == '#')
+ val = NULL;
+ for (line = 1; (buf = fgetln(fp, &len)) != NULL; ++line) {
+ if (*buf == '\0' || *buf == '#')
continue;
- if (!(p = strchr(buf, '\n'))) {
- warnx("line %d too long", line);
- goto bad;
- }
- *p = '\0';
+ while (len > 0 && isspace(buf[len - 1]))
+ --len;
for (ep = list;; ++ep) {
if (!ep->prompt) {
- warnx("unrecognized field on line %d", line);
+ warnx("%s: unrecognized field on line %d",
+ tfn, line);
+ goto bad;
+ }
+ if (ep->len > len)
+ continue;
+ if (strncasecmp(buf, ep->prompt, ep->len) != 0)
+ continue;
+ if (ep->restricted && !master_mode) {
+ warnx("%s: you may not change the %s field",
+ tfn, ep->prompt);
goto bad;
}
- if (!strncasecmp(buf, ep->prompt, ep->len)) {
- if (ep->restricted && uid) {
- warnx(
- "you may not change the %s field",
- ep->prompt);
- goto bad;
- }
- if (!(p = strchr(buf, ':'))) {
- warnx("line %d corrupted", line);
- goto bad;
- }
- while (isspace(*++p));
- if (ep->except && strpbrk(p, ep->except)) {
- warnx(
- "illegal character in the \"%s\" field",
- ep->prompt);
- goto bad;
- }
- if ((ep->func)(p, pw, ep)) {
-bad: (void)fclose(fp);
- return (0);
- }
- break;
+ for (p = buf; p < buf + len && *p != ':'; ++p)
+ /* nothing */ ;
+ if (*p != ':') {
+ warnx("%s: line %d corrupted", tfn, line);
+ goto bad;
+ }
+ while (++p < buf + len && isspace(*p))
+ /* nothing */ ;
+ free(val);
+ asprintf(&val, "%.*s", (int)(buf + len - p), p);
+ if (val == NULL)
+ goto bad;
+ if (ep->except && strpbrk(val, ep->except)) {
+ warnx("%s: invalid character in \"%s\" field '%s'",
+ tfn, ep->prompt, val);
+ goto bad;
}
+ if ((ep->func)(val, pw, ep))
+ goto bad;
+ break;
}
}
- (void)fclose(fp);
+ free(val);
+ fclose(fp);
/* Build the gecos field. */
- len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) +
- strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) +
- strlen(list[E_OTHER].save) + 5;
- if (!(p = malloc(len)))
- err(1, NULL);
- (void)sprintf(pw->pw_gecos = p, "%s,%s,%s,%s,%s", list[E_NAME].save,
- list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save,
- list[E_OTHER].save);
-
- while ((len = strlen(pw->pw_gecos)) && pw->pw_gecos[len - 1] == ',')
- pw->pw_gecos[len - 1] = '\0';
-
- if ((size_t)snprintf(buf, sizeof(buf),
- "%s:%s:%lu:%lu:%s:%ld:%ld:%s:%s:%s",
- pw->pw_name, pw->pw_passwd, (unsigned long)pw->pw_uid,
- (unsigned long)pw->pw_gid, pw->pw_class, (long)pw->pw_change,
- (long)pw->pw_expire, pw->pw_gecos, pw->pw_dir,
- pw->pw_shell) >= sizeof(buf)) {
- warnx("entries too long");
- free(p);
- return (0);
+ len = asprintf(&p, "%s,%s,%s,%s,%s", list[E_NAME].save,
+ list[E_LOCATE].save, list[E_BPHONE].save,
+ list[E_HPHONE].save, list[E_OTHER].save);
+ if (p == NULL) {
+ warn("asprintf()");
+ free(pw);
+ return (NULL);
}
+ while (len > 0 && p[len - 1] == ',')
+ p[--len] = '\0';
+ pw->pw_gecos = p;
+ buf = pw_make(pw);
+ free(pw);
free(p);
- return (__pw_scan(buf, pw, _PWSCAN_WARN|_PWSCAN_MASTER));
+ if (buf == NULL) {
+ warn("pw_make()");
+ return (NULL);
+ }
+ npw = pw_scan(buf, PWSCAN_WARN|PWSCAN_MASTER);
+ free(buf);
+ return (npw);
+bad:
+ free(pw);
+ free(val);
+ fclose(fp);
+ return (NULL);
}
git.ckatri.com / pw-darwin.git / blobdiff