Add skey supprot
Reviewed by: Submitted by: guido
This commit is contained in:
parent
d9e9aec7ad
commit
7c4c6e58ba
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=2198
50
lib/libpam/modules/pam_login_access/login.access.5
Normal file
50
lib/libpam/modules/pam_login_access/login.access.5
Normal file
@ -0,0 +1,50 @@
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.\" this is comment
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.Dd April 30, 1994
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.Dt SKEY.ACCESS 5
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.Os FreeBSD 1.2
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.Sh NAME
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||||
.Nm login.access
|
||||
.Nd Login access control table
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.Sh DESCRIPTION
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The
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.Nm login.access
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file specifies (user, host) combinations and/or (user, tty)
|
||||
combinations for which a login will be either accepted or refused.
|
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.Pp
|
||||
When someone logs in, the
|
||||
.Nm login.access
|
||||
is scanned for the first entry that
|
||||
matches the (user, host) combination, or, in case of non-networked
|
||||
logins, the first entry that matches the (user, tty) combination. The
|
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permissions field of that table entry determines whether the login will
|
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be accepted or refused.
|
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.Pp
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Each line of the login access control table has three fields separated by a
|
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":" character: permission : users : origins
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||||
|
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The first field should be a "+" (access granted) or "-" (access denied)
|
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character. The second field should be a list of one or more login names,
|
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group names, or ALL (always matches). The third field should be a list
|
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of one or more tty names (for non-networked logins), host names, domain
|
||||
names (begin with "."), host addresses, internet network numbers (end
|
||||
with "."), ALL (always matches) or LOCAL (matches any string that does
|
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not contain a "." character). If you run NIS you can use @netgroupname
|
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in host or user patterns.
|
||||
|
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The EXCEPT operator makes it possible to write very compact rules.
|
||||
|
||||
The group file is searched only when a name does not match that of the
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logged-in user. Only groups are matched in which users are explicitly
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listed: the program does not look at a user's primary group id value.
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.Sh FILES
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.Bl -tag -width /etc/login.access -compact
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.It Pa /etc/login.access
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The
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.Nm login.access
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||||
file resides in
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.Pa /etc .
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.El
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||||
.Sh SEE ALSO
|
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.Xr login 1
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.Sh AUTHOR
|
||||
Guido van Rooij
|
236
lib/libpam/modules/pam_login_access/login_access.c
Normal file
236
lib/libpam/modules/pam_login_access/login_access.c
Normal file
@ -0,0 +1,236 @@
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/*
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* This module implements a simple but effective form of login access
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* control based on login names and on host (or domain) names, internet
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* addresses (or network numbers), or on terminal line names in case of
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* non-networked logins. Diagnostics are reported through syslog(3).
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*
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* Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
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*/
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#ifdef LOGIN_ACCESS
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#ifndef lint
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static char sccsid[] = "%Z% %M% %I% %E% %U%";
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#endif
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#include <stdio.h>
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#include <syslog.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <grp.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include "pathnames.h"
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/* Delimiters for fields and for lists of users, ttys or hosts. */
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static char fs[] = ":"; /* field separator */
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static char sep[] = ", \t"; /* list-element separator */
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/* Constants to be used in assignments only, not in comparisons... */
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#define YES 1
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#define NO 0
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static int list_match();
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static int user_match();
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static int from_match();
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static int string_match();
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/* login_access - match username/group and host/tty with access control file */
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login_access(user, from)
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char *user;
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char *from;
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{
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FILE *fp;
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char line[BUFSIZ];
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char *perm; /* becomes permission field */
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char *users; /* becomes list of login names */
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char *froms; /* becomes list of terminals or hosts */
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int match = NO;
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int end;
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int lineno = 0; /* for diagnostics */
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/*
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* Process the table one line at a time and stop at the first match.
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* Blank lines and lines that begin with a '#' character are ignored.
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* Non-comment lines are broken at the ':' character. All fields are
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* mandatory. The first field should be a "+" or "-" character. A
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* non-existing table means no access control.
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*/
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if (fp = fopen(_PATH_LOGACCESS, "r")) {
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while (!match && fgets(line, sizeof(line), fp)) {
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lineno++;
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if (line[end = strlen(line) - 1] != '\n') {
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syslog(LOG_ERR, "%s: line %d: missing newline or line too long",
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_PATH_LOGACCESS, lineno);
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continue;
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}
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if (line[0] == '#')
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continue; /* comment line */
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while (end > 0 && isspace(line[end - 1]))
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end--;
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line[end] = 0; /* strip trailing whitespace */
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if (line[0] == 0) /* skip blank lines */
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continue;
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if (!(perm = strtok(line, fs))
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|| !(users = strtok((char *) 0, fs))
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|| !(froms = strtok((char *) 0, fs))
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|| strtok((char *) 0, fs)) {
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syslog(LOG_ERR, "%s: line %d: bad field count", _PATH_LOGACCESS,
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lineno);
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continue;
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}
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if (perm[0] != '+' && perm[0] != '-') {
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syslog(LOG_ERR, "%s: line %d: bad first field", _PATH_LOGACCESS,
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lineno);
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continue;
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}
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match = (list_match(froms, from, from_match)
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&& list_match(users, user, user_match));
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}
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(void) fclose(fp);
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} else if (errno != ENOENT) {
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syslog(LOG_ERR, "cannot open %s: %m", _PATH_LOGACCESS);
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}
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return (match == 0 || (line[0] == '+'));
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}
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/* list_match - match an item against a list of tokens with exceptions */
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static int list_match(list, item, match_fn)
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char *list;
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char *item;
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int (*match_fn) ();
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{
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char *tok;
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int match = NO;
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/*
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* Process tokens one at a time. We have exhausted all possible matches
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* when we reach an "EXCEPT" token or the end of the list. If we do find
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* a match, look for an "EXCEPT" list and recurse to determine whether
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* the match is affected by any exceptions.
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*/
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for (tok = strtok(list, sep); tok != 0; tok = strtok((char *) 0, sep)) {
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if (strcasecmp(tok, "EXCEPT") == 0) /* EXCEPT: give up */
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break;
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if (match = (*match_fn) (tok, item)) /* YES */
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break;
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}
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/* Process exceptions to matches. */
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if (match != NO) {
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while ((tok = strtok((char *) 0, sep)) && strcasecmp(tok, "EXCEPT"))
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/* VOID */ ;
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if (tok == 0 || list_match((char *) 0, item, match_fn) == NO)
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return (match);
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}
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return (NO);
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}
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/* netgroup_match - match group against machine or user */
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static int netgroup_match(group, machine, user)
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char *machine;
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char *user;
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{
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#ifdef NIS
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static char *mydomain = 0;
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if (mydomain == 0)
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yp_get_default_domain(&mydomain);
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return (innetgr(group, machine, user, mydomain));
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#else
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syslog(LOG_ERR, "NIS netgroup support not configured");
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#endif
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}
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/* user_match - match a username against one token */
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static int user_match(tok, string)
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char *tok;
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char *string;
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{
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struct group *group;
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int i;
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/*
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* If a token has the magic value "ALL" the match always succeeds.
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* Otherwise, return YES if the token fully matches the username, or if
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* the token is a group that contains the username.
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*/
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if (tok[0] == '@') { /* netgroup */
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return (netgroup_match(tok + 1, (char *) 0, string));
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} else if (string_match(tok, string)) { /* ALL or exact match */
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return (YES);
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} else if (group = getgrnam(tok)) { /* try group membership */
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for (i = 0; group->gr_mem[i]; i++)
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if (strcasecmp(string, group->gr_mem[i]) == 0)
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return (YES);
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}
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return (NO);
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}
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/* from_match - match a host or tty against a list of tokens */
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static int from_match(tok, string)
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char *tok;
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char *string;
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{
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int tok_len;
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int str_len;
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/*
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* If a token has the magic value "ALL" the match always succeeds. Return
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* YES if the token fully matches the string. If the token is a domain
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* name, return YES if it matches the last fields of the string. If the
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* token has the magic value "LOCAL", return YES if the string does not
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* contain a "." character. If the token is a network number, return YES
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* if it matches the head of the string.
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*/
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if (tok[0] == '@') { /* netgroup */
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return (netgroup_match(tok + 1, string, (char *) 0));
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} else if (string_match(tok, string)) { /* ALL or exact match */
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return (YES);
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} else if (tok[0] == '.') { /* domain: match last fields */
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if ((str_len = strlen(string)) > (tok_len = strlen(tok))
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&& strcasecmp(tok, string + str_len - tok_len) == 0)
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return (YES);
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} else if (strcasecmp(tok, "LOCAL") == 0) { /* local: no dots */
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if (strchr(string, '.') == 0)
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return (YES);
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} else if (tok[(tok_len = strlen(tok)) - 1] == '.' /* network */
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&& strncmp(tok, string, tok_len) == 0) {
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return (YES);
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}
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return (NO);
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}
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/* string_match - match a string against one token */
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static int string_match(tok, string)
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char *tok;
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char *string;
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{
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/*
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* If the token has the magic value "ALL" the match always succeeds.
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* Otherwise, return YES if the token fully matches the string.
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*/
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if (strcasecmp(tok, "ALL") == 0) { /* all: always matches */
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return (YES);
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} else if (strcasecmp(tok, string) == 0) { /* try exact match */
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return (YES);
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}
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return (NO);
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}
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#endif /* LOGIN_ACCES */
|
@ -2,14 +2,18 @@
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#CFLAGS+=-DKERBEROS
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PROG= login
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SRCS= login.c
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MAN1= login.1
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MAN5= login.access.5
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SRCS= login.c login_access.c login_skey.c
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#klogin.c
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DPADD= ${LIBUTIL}
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DPADD= ${LIBUTIL} ${LIBSKEY}
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#${LIBKRB} ${LIBDES}
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LDADD= -lutil -lcrypt
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LDADD= -lutil -lcrypt -lskey
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#-lkrb -ldes
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BINOWN= root
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BINMODE=4555
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CFLAGS+= -DLOGIN_ACCESS -DSKEY -DLOGALL
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INSTALLFLAGS=-fschg
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.include <bsd.prog.mk>
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|
10
usr.bin/login/README
Normal file
10
usr.bin/login/README
Normal file
@ -0,0 +1,10 @@
|
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This login has additional functionalities. They are all based on (part of)
|
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Wietse Venema's logdaemon package.
|
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|
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|
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The following defines can be used:
|
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1) LOGIN_ACCESS to allow access control on a per tty/user combination
|
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2) SKEY to allow the use of s/key one time passwords
|
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3) LOGALL to log all logins
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-Guido
|
50
usr.bin/login/login.access.5
Normal file
50
usr.bin/login/login.access.5
Normal file
@ -0,0 +1,50 @@
|
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.\" this is comment
|
||||
.Dd April 30, 1994
|
||||
.Dt SKEY.ACCESS 5
|
||||
.Os FreeBSD 1.2
|
||||
.Sh NAME
|
||||
.Nm login.access
|
||||
.Nd Login access control table
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
.Nm login.access
|
||||
file specifies (user, host) combinations and/or (user, tty)
|
||||
combinations for which a login will be either accepted or refused.
|
||||
.Pp
|
||||
When someone logs in, the
|
||||
.Nm login.access
|
||||
is scanned for the first entry that
|
||||
matches the (user, host) combination, or, in case of non-networked
|
||||
logins, the first entry that matches the (user, tty) combination. The
|
||||
permissions field of that table entry determines whether the login will
|
||||
be accepted or refused.
|
||||
.Pp
|
||||
Each line of the login access control table has three fields separated by a
|
||||
":" character: permission : users : origins
|
||||
|
||||
The first field should be a "+" (access granted) or "-" (access denied)
|
||||
character. The second field should be a list of one or more login names,
|
||||
group names, or ALL (always matches). The third field should be a list
|
||||
of one or more tty names (for non-networked logins), host names, domain
|
||||
names (begin with "."), host addresses, internet network numbers (end
|
||||
with "."), ALL (always matches) or LOCAL (matches any string that does
|
||||
not contain a "." character). If you run NIS you can use @netgroupname
|
||||
in host or user patterns.
|
||||
|
||||
The EXCEPT operator makes it possible to write very compact rules.
|
||||
|
||||
The group file is searched only when a name does not match that of the
|
||||
logged-in user. Only groups are matched in which users are explicitly
|
||||
listed: the program does not look at a user's primary group id value.
|
||||
.Sh FILES
|
||||
.Bl -tag -width /etc/login.access -compact
|
||||
.It Pa /etc/login.access
|
||||
The
|
||||
.Nm login.access
|
||||
file resides in
|
||||
.Pa /etc .
|
||||
.El
|
||||
.Sh SEE ALSO
|
||||
.Xr login 1
|
||||
.Sh AUTHOR
|
||||
Guido van Rooij
|
236
usr.bin/login/login_access.c
Normal file
236
usr.bin/login/login_access.c
Normal file
@ -0,0 +1,236 @@
|
||||
/*
|
||||
* This module implements a simple but effective form of login access
|
||||
* control based on login names and on host (or domain) names, internet
|
||||
* addresses (or network numbers), or on terminal line names in case of
|
||||
* non-networked logins. Diagnostics are reported through syslog(3).
|
||||
*
|
||||
* Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
|
||||
*/
|
||||
|
||||
#ifdef LOGIN_ACCESS
|
||||
#ifndef lint
|
||||
static char sccsid[] = "%Z% %M% %I% %E% %U%";
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <syslog.h>
|
||||
#include <ctype.h>
|
||||
#include <sys/types.h>
|
||||
#include <grp.h>
|
||||
#include <errno.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "pathnames.h"
|
||||
|
||||
/* Delimiters for fields and for lists of users, ttys or hosts. */
|
||||
|
||||
static char fs[] = ":"; /* field separator */
|
||||
static char sep[] = ", \t"; /* list-element separator */
|
||||
|
||||
/* Constants to be used in assignments only, not in comparisons... */
|
||||
|
||||
#define YES 1
|
||||
#define NO 0
|
||||
|
||||
static int list_match();
|
||||
static int user_match();
|
||||
static int from_match();
|
||||
static int string_match();
|
||||
|
||||
/* login_access - match username/group and host/tty with access control file */
|
||||
|
||||
login_access(user, from)
|
||||
char *user;
|
||||
char *from;
|
||||
{
|
||||
FILE *fp;
|
||||
char line[BUFSIZ];
|
||||
char *perm; /* becomes permission field */
|
||||
char *users; /* becomes list of login names */
|
||||
char *froms; /* becomes list of terminals or hosts */
|
||||
int match = NO;
|
||||
int end;
|
||||
int lineno = 0; /* for diagnostics */
|
||||
|
||||
/*
|
||||
* Process the table one line at a time and stop at the first match.
|
||||
* Blank lines and lines that begin with a '#' character are ignored.
|
||||
* Non-comment lines are broken at the ':' character. All fields are
|
||||
* mandatory. The first field should be a "+" or "-" character. A
|
||||
* non-existing table means no access control.
|
||||
*/
|
||||
|
||||
if (fp = fopen(_PATH_LOGACCESS, "r")) {
|
||||
while (!match && fgets(line, sizeof(line), fp)) {
|
||||
lineno++;
|
||||
if (line[end = strlen(line) - 1] != '\n') {
|
||||
syslog(LOG_ERR, "%s: line %d: missing newline or line too long",
|
||||
_PATH_LOGACCESS, lineno);
|
||||
continue;
|
||||
}
|
||||
if (line[0] == '#')
|
||||
continue; /* comment line */
|
||||
while (end > 0 && isspace(line[end - 1]))
|
||||
end--;
|
||||
line[end] = 0; /* strip trailing whitespace */
|
||||
if (line[0] == 0) /* skip blank lines */
|
||||
continue;
|
||||
if (!(perm = strtok(line, fs))
|
||||
|| !(users = strtok((char *) 0, fs))
|
||||
|| !(froms = strtok((char *) 0, fs))
|
||||
|| strtok((char *) 0, fs)) {
|
||||
syslog(LOG_ERR, "%s: line %d: bad field count", _PATH_LOGACCESS,
|
||||
lineno);
|
||||
continue;
|
||||
}
|
||||
if (perm[0] != '+' && perm[0] != '-') {
|
||||
syslog(LOG_ERR, "%s: line %d: bad first field", _PATH_LOGACCESS,
|
||||
lineno);
|
||||
continue;
|
||||
}
|
||||
match = (list_match(froms, from, from_match)
|
||||
&& list_match(users, user, user_match));
|
||||
}
|
||||
(void) fclose(fp);
|
||||
} else if (errno != ENOENT) {
|
||||
syslog(LOG_ERR, "cannot open %s: %m", _PATH_LOGACCESS);
|
||||
}
|
||||
return (match == 0 || (line[0] == '+'));
|
||||
}
|
||||
|
||||
/* list_match - match an item against a list of tokens with exceptions */
|
||||
|
||||
static int list_match(list, item, match_fn)
|
||||
char *list;
|
||||
char *item;
|
||||
int (*match_fn) ();
|
||||
{
|
||||
char *tok;
|
||||
int match = NO;
|
||||
|
||||
/*
|
||||
* Process tokens one at a time. We have exhausted all possible matches
|
||||
* when we reach an "EXCEPT" token or the end of the list. If we do find
|
||||
* a match, look for an "EXCEPT" list and recurse to determine whether
|
||||
* the match is affected by any exceptions.
|
||||
*/
|
||||
|
||||
for (tok = strtok(list, sep); tok != 0; tok = strtok((char *) 0, sep)) {
|
||||
if (strcasecmp(tok, "EXCEPT") == 0) /* EXCEPT: give up */
|
||||
break;
|
||||
if (match = (*match_fn) (tok, item)) /* YES */
|
||||
break;
|
||||
}
|
||||
/* Process exceptions to matches. */
|
||||
|
||||
if (match != NO) {
|
||||
while ((tok = strtok((char *) 0, sep)) && strcasecmp(tok, "EXCEPT"))
|
||||
/* VOID */ ;
|
||||
if (tok == 0 || list_match((char *) 0, item, match_fn) == NO)
|
||||
return (match);
|
||||
}
|
||||
return (NO);
|
||||
}
|
||||
|
||||
/* netgroup_match - match group against machine or user */
|
||||
|
||||
static int netgroup_match(group, machine, user)
|
||||
char *machine;
|
||||
char *user;
|
||||
{
|
||||
#ifdef NIS
|
||||
static char *mydomain = 0;
|
||||
|
||||
if (mydomain == 0)
|
||||
yp_get_default_domain(&mydomain);
|
||||
return (innetgr(group, machine, user, mydomain));
|
||||
#else
|
||||
syslog(LOG_ERR, "NIS netgroup support not configured");
|
||||
#endif
|
||||
}
|
||||
|
||||
/* user_match - match a username against one token */
|
||||
|
||||
static int user_match(tok, string)
|
||||
char *tok;
|
||||
char *string;
|
||||
{
|
||||
struct group *group;
|
||||
int i;
|
||||
|
||||
/*
|
||||
* If a token has the magic value "ALL" the match always succeeds.
|
||||
* Otherwise, return YES if the token fully matches the username, or if
|
||||
* the token is a group that contains the username.
|
||||
*/
|
||||
|
||||
if (tok[0] == '@') { /* netgroup */
|
||||
return (netgroup_match(tok + 1, (char *) 0, string));
|
||||
} else if (string_match(tok, string)) { /* ALL or exact match */
|
||||
return (YES);
|
||||
} else if (group = getgrnam(tok)) { /* try group membership */
|
||||
for (i = 0; group->gr_mem[i]; i++)
|
||||
if (strcasecmp(string, group->gr_mem[i]) == 0)
|
||||
return (YES);
|
||||
}
|
||||
return (NO);
|
||||
}
|
||||
|
||||
/* from_match - match a host or tty against a list of tokens */
|
||||
|
||||
static int from_match(tok, string)
|
||||
char *tok;
|
||||
char *string;
|
||||
{
|
||||
int tok_len;
|
||||
int str_len;
|
||||
|
||||
/*
|
||||
* If a token has the magic value "ALL" the match always succeeds. Return
|
||||
* YES if the token fully matches the string. If the token is a domain
|
||||
* name, return YES if it matches the last fields of the string. If the
|
||||
* token has the magic value "LOCAL", return YES if the string does not
|
||||
* contain a "." character. If the token is a network number, return YES
|
||||
* if it matches the head of the string.
|
||||
*/
|
||||
|
||||
if (tok[0] == '@') { /* netgroup */
|
||||
return (netgroup_match(tok + 1, string, (char *) 0));
|
||||
} else if (string_match(tok, string)) { /* ALL or exact match */
|
||||
return (YES);
|
||||
} else if (tok[0] == '.') { /* domain: match last fields */
|
||||
if ((str_len = strlen(string)) > (tok_len = strlen(tok))
|
||||
&& strcasecmp(tok, string + str_len - tok_len) == 0)
|
||||
return (YES);
|
||||
} else if (strcasecmp(tok, "LOCAL") == 0) { /* local: no dots */
|
||||
if (strchr(string, '.') == 0)
|
||||
return (YES);
|
||||
} else if (tok[(tok_len = strlen(tok)) - 1] == '.' /* network */
|
||||
&& strncmp(tok, string, tok_len) == 0) {
|
||||
return (YES);
|
||||
}
|
||||
return (NO);
|
||||
}
|
||||
|
||||
/* string_match - match a string against one token */
|
||||
|
||||
static int string_match(tok, string)
|
||||
char *tok;
|
||||
char *string;
|
||||
{
|
||||
|
||||
/*
|
||||
* If the token has the magic value "ALL" the match always succeeds.
|
||||
* Otherwise, return YES if the token fully matches the string.
|
||||
*/
|
||||
|
||||
if (strcasecmp(tok, "ALL") == 0) { /* all: always matches */
|
||||
return (YES);
|
||||
} else if (strcasecmp(tok, string) == 0) { /* try exact match */
|
||||
return (YES);
|
||||
}
|
||||
return (NO);
|
||||
}
|
||||
#endif /* LOGIN_ACCES */
|
105
usr.bin/login/login_skey.c
Normal file
105
usr.bin/login/login_skey.c
Normal file
@ -0,0 +1,105 @@
|
||||
/* Portions taken from the skey distribution on Oct 21 1993 */
|
||||
#ifdef SKEY
|
||||
#include <sys/types.h>
|
||||
#include <netinet/in.h>
|
||||
#include <string.h>
|
||||
#include <netdb.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <stdio.h>
|
||||
#include <termios.h>
|
||||
#include <pwd.h>
|
||||
#include <syslog.h>
|
||||
|
||||
#include <skey.h>
|
||||
|
||||
/* skey_getpass - read regular or s/key password */
|
||||
|
||||
char *skey_getpass(prompt, pwd, pwok)
|
||||
char *prompt;
|
||||
struct passwd *pwd;
|
||||
int pwok;
|
||||
{
|
||||
static char buf[128];
|
||||
struct skey skey;
|
||||
char *cp;
|
||||
void rip();
|
||||
struct termios saved_ttymode;
|
||||
struct termios noecho_ttymode;
|
||||
char *username = pwd ? pwd->pw_name : "nope";
|
||||
int sflag;
|
||||
|
||||
/* Attempt an s/key challenge. */
|
||||
|
||||
if ((sflag = skeychallenge(&skey, username, buf)) == 0) {
|
||||
printf("%s\n", buf);
|
||||
}
|
||||
if (!pwok) {
|
||||
printf("(s/key required)\n");
|
||||
}
|
||||
fputs(prompt, stdout);
|
||||
fflush(stdout);
|
||||
|
||||
/* Save current input modes and turn echo off. */
|
||||
|
||||
tcgetattr(0, &saved_ttymode);
|
||||
tcgetattr(0, &noecho_ttymode);
|
||||
noecho_ttymode.c_lflag &= ~ECHO;
|
||||
tcsetattr(0, TCSANOW, &noecho_ttymode);
|
||||
|
||||
/* Read password. */
|
||||
|
||||
buf[0] = 0;
|
||||
fgets(buf, sizeof(buf), stdin);
|
||||
rip(buf);
|
||||
|
||||
/* Restore previous input modes. */
|
||||
|
||||
tcsetattr(0, TCSANOW, &saved_ttymode);
|
||||
|
||||
/* Give S/Key users a chance to do it with echo on. */
|
||||
|
||||
if (sflag == 0 && feof(stdin) == 0 && buf[0] == 0) {
|
||||
fputs(" (turning echo on)\n", stdout);
|
||||
fputs(prompt, stdout);
|
||||
fflush(stdout);
|
||||
fgets(buf, sizeof(buf), stdin);
|
||||
rip(buf);
|
||||
} else {
|
||||
putchar('\n');
|
||||
}
|
||||
return (buf);
|
||||
}
|
||||
|
||||
/* skey_crypt - return encrypted UNIX passwd if s/key or regular password ok */
|
||||
|
||||
char *skey_crypt(pp, salt, pwd, pwok)
|
||||
char *pp;
|
||||
char *salt;
|
||||
struct passwd *pwd;
|
||||
int pwok;
|
||||
{
|
||||
struct skey skey;
|
||||
char *p;
|
||||
char *crypt();
|
||||
|
||||
/* Try s/key authentication even when the UNIX password is permitted. */
|
||||
|
||||
if (pwd != 0 && skeylookup(&skey, pwd->pw_name) == 0
|
||||
&& skeyverify(&skey, pp) == 0) {
|
||||
/* s/key authentication succeeded */
|
||||
if (skey.n < 5)
|
||||
printf("Warning! Change s/key password soon\n");
|
||||
return (pwd->pw_passwd);
|
||||
}
|
||||
|
||||
/* When s/key authentication does not work, always invoke crypt(). */
|
||||
|
||||
p = crypt(pp, salt);
|
||||
if (pwok && pwd != 0 && strcmp(p, pwd->pw_passwd) == 0)
|
||||
return (pwd->pw_passwd);
|
||||
|
||||
/* The user does not exist or entered bad input. */
|
||||
|
||||
return (":");
|
||||
}
|
||||
#endif SKEY
|
@ -37,3 +37,4 @@
|
||||
|
||||
#define _PATH_HUSHLOGIN ".hushlogin"
|
||||
#define _PATH_MOTDFILE "/etc/motd"
|
||||
#define _PATH_LOGACCESS "/etc/login.access"
|
||||
|
Loading…
Reference in New Issue
Block a user