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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libutil/check_expire.c	Lines:	7	65	10.8 %
Date:	2017-11-07	Branches:	3	36	8.3 %


/*	$OpenBSD: check_expire.c,v 1.12 2015/11/26 23:32:52 millert Exp $	*/

/*
 * Copyright (c) 1997 Berkeley Software Design, Inc. 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 Berkeley Software Design,
 *	Inc.
 * 4. The name of Berkeley Software Design, Inc.  may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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.
 *
 *	BSDI $From: check_expire.c,v 2.1 1997/08/08 18:38:25 prb Exp $
 */

#include <sys/types.h>

#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <login_cap.h>
#include <bsd_auth.h>

#include "util.h"

static char *pwd_update(const struct passwd *, const struct passwd *);

#define SECSPERDAY	(24 * 60 * 60)
#define TWOWEEKS	(2 * 7 * SECSPERDAY)

int
login_check_expire(FILE *back, struct passwd *pwd, char *class, int lastchance)
{
	auth_session_t *as;
	login_cap_t *lc;
	quad_t dead, expire, warn;
	char *p;

	if ((as = auth_open()) == NULL) {
		fprintf(back, BI_VALUE
		    " errormsg Unable to create auth session\n");
		fprintf(back, BI_REJECT "\n");
		return (1);
	}
	if (auth_setpwd(as, pwd) < 0) {
		fprintf(back, BI_VALUE
		    " errormsg Unable to set pwd entry in auth session\n");
		fprintf(back, BI_REJECT "\n");
		return (1);
	}

	expire = auth_check_change(as);
	auth_close(as);

	if (expire != 0) {
		fprintf(back, BI_VALUE " expire %qd\n", expire);

		if (class == NULL)
			class = pwd->pw_class;

		if ((lc = login_getclass(class)) == NULL) {
			dead = 0;
			warn = 0;
		} else {
			dead = login_getcaptime(lc, "password-dead", 0, 0);
			warn = login_getcaptime(lc, "password-warn",
			    TWOWEEKS, TWOWEEKS);
			if (dead < 0)
				dead = 0;
			if (warn < 0)
				warn = 0;
		}
		login_close(lc);

		/*
		 * If their password is dead (expired longer than
		 * password-dead) then just reject them.  If it is
		 * expired but not dead yet, reject them with a
		 * PWEXPIRED so login knows they can still sort of
		 * get in.
		 */
		if (expire < -dead) {
			fprintf(back, BI_VALUE
			    " errormsg Your password has expired\n");
			fprintf(back, BI_REJECT "\n");
			return (1);
		}
		if (expire < 0) {
			if (lastchance) {
				struct passwd *npwd;

				endpwent();

				/*
				 * Only let them play this game once.
				 * Set their password change time to 1.
				 * This will most certainly cause any
				 * expired password to be dead, as well.
				 */
				npwd = pw_dup(pwd);
				npwd->pw_change = 1;
				p = pwd_update(npwd, pwd);
				explicit_bzero(npwd->pw_passwd,
				    strlen(npwd->pw_passwd));
				free(npwd);
				if (p != NULL) {
					char *errval = auth_mkvalue(p);
					if (errval != NULL) {
						fprintf(back, BI_VALUE
						    " errormsg %s", errval);
						free(errval);
					}
					fprintf(back, BI_REJECT "\n");
					return (1);
				}
			}
			fprintf(back, BI_VALUE
			    " errormsg Your password has expired\n");
			fprintf(back, BI_PWEXPIRED "\n");
			return (1);
		}

		/*
		 * If their password is not expired but is about to expire
		 * then warn them.
		 */
		if (expire <= warn) {
			fprintf(back, BI_VALUE
			    " warnmsg Your password expires on %s\n",
			    ctime(&pwd->pw_change));
		}
	}
	return (0);
}

static char *
pwd_update(const struct passwd *pwd, const struct passwd *opwd)
{
	int tfd, pfd;

	pw_init();
	tfd = pw_lock(0);
	if (tfd < 0) {
		if (errno == EEXIST)
			return("the passwd file is busy.");
		else
			return("can't open passwd temp file");
	}

	pfd = open(_PATH_MASTERPASSWD, O_RDONLY|O_CLOEXEC, 0);
	if (pfd < 0) {
		pw_abort();
		return(strerror(errno));
	}

	pw_copy(pfd, tfd, pwd, opwd);
	if (pw_mkdb(pwd->pw_name, 0) < 0) {
		pw_abort();
		return("unable to update password database");
	}

	return(NULL);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: check_expire.c,v 1.12 2015/11/26 23:32:52 millert Exp $ */
2
3			/*
4			* Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved.
5			*
6			* Redistribution and use in source and binary forms, with or without
7			* modification, are permitted provided that the following conditions
8			* are met:
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			* 2. Redistributions in binary form must reproduce the above copyright
12			* notice, this list of conditions and the following disclaimer in the
13			* documentation and/or other materials provided with the distribution.
14			* 3. All advertising materials mentioning features or use of this software
15			* must display the following acknowledgement:
16			* This product includes software developed by Berkeley Software Design,
17			* Inc.
18			* 4. The name of Berkeley Software Design, Inc. may not be used to endorse
19			* or promote products derived from this software without specific prior
20			* written permission.
21			*
22			* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND
23			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25			* ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE
26			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32			* SUCH DAMAGE.
33			*
34			* BSDI $From: check_expire.c,v 2.1 1997/08/08 18:38:25 prb Exp $
35			*/
36
37			#include <sys/types.h>
38
39			#include <errno.h>
40			#include <fcntl.h>
41			#include <pwd.h>
42			#include <signal.h>
43			#include <stdio.h>
44			#include <stdlib.h>
45			#include <string.h>
46			#include <time.h>
47			#include <login_cap.h>
48			#include <bsd_auth.h>
49
50			#include "util.h"
51
52			static char pwd_update(const struct passwd , const struct passwd *);
53
54			#define SECSPERDAY (24 * 60 * 60)
55			#define TWOWEEKS (2 * 7 * SECSPERDAY)
56
57			int
58			login_check_expire(FILE back, struct passwd pwd, char *class, int lastchance)
59			{
60			auth_session_t *as;
61			login_cap_t *lc;
62			quad_t dead, expire, warn;
63			char *p;
64
65	✗✓	6	if ((as = auth_open()) == NULL) {
66			fprintf(back, BI_VALUE
67			" errormsg Unable to create auth session\n");
68			fprintf(back, BI_REJECT "\n");
69			return (1);
70			}
71	✗✓	3	if (auth_setpwd(as, pwd) < 0) {
72			fprintf(back, BI_VALUE
73			" errormsg Unable to set pwd entry in auth session\n");
74			fprintf(back, BI_REJECT "\n");
75			return (1);
76			}
77
78		3	expire = auth_check_change(as);
79		3	auth_close(as);
80
81	✗✓	3	if (expire != 0) {
82			fprintf(back, BI_VALUE " expire %qd\n", expire);
83
84			if (class == NULL)
85			class = pwd->pw_class;
86
87			if ((lc = login_getclass(class)) == NULL) {
88			dead = 0;
89			warn = 0;
90			} else {
91			dead = login_getcaptime(lc, "password-dead", 0, 0);
92			warn = login_getcaptime(lc, "password-warn",
93			TWOWEEKS, TWOWEEKS);
94			if (dead < 0)
95			dead = 0;
96			if (warn < 0)
97			warn = 0;
98			}
99			login_close(lc);
100
101			/*
102			* If their password is dead (expired longer than
103			* password-dead) then just reject them. If it is
104			* expired but not dead yet, reject them with a
105			* PWEXPIRED so login knows they can still sort of
106			* get in.
107			*/
108			if (expire < -dead) {
109			fprintf(back, BI_VALUE
110			" errormsg Your password has expired\n");
111			fprintf(back, BI_REJECT "\n");
112			return (1);
113			}
114			if (expire < 0) {
115			if (lastchance) {
116			struct passwd *npwd;
117
118			endpwent();
119
120			/*
121			* Only let them play this game once.
122			* Set their password change time to 1.
123			* This will most certainly cause any
124			* expired password to be dead, as well.
125			*/
126			npwd = pw_dup(pwd);
127			npwd->pw_change = 1;
128			p = pwd_update(npwd, pwd);
129			explicit_bzero(npwd->pw_passwd,
130			strlen(npwd->pw_passwd));
131			free(npwd);
132			if (p != NULL) {
133			char *errval = auth_mkvalue(p);
134			if (errval != NULL) {
135			fprintf(back, BI_VALUE
136			" errormsg %s", errval);
137			free(errval);
138			}
139			fprintf(back, BI_REJECT "\n");
140			return (1);
141			}
142			}
143			fprintf(back, BI_VALUE
144			" errormsg Your password has expired\n");
145			fprintf(back, BI_PWEXPIRED "\n");
146			return (1);
147			}
148
149			/*
150			* If their password is not expired but is about to expire
151			* then warn them.
152			*/
153			if (expire <= warn) {
154			fprintf(back, BI_VALUE
155			" warnmsg Your password expires on %s\n",
156			ctime(&pwd->pw_change));
157			}
158			}
159		3	return (0);
160		3	}
161
162			static char *
163			pwd_update(const struct passwd pwd, const struct passwd opwd)
164			{
165			int tfd, pfd;
166
167			pw_init();
168			tfd = pw_lock(0);
169			if (tfd < 0) {
170			if (errno == EEXIST)
171			return("the passwd file is busy.");
172			else
173			return("can't open passwd temp file");
174			}
175
176			pfd = open(_PATH_MASTERPASSWD, O_RDONLY\|O_CLOEXEC, 0);
177			if (pfd < 0) {
178			pw_abort();
179			return(strerror(errno));
180			}
181
182			pw_copy(pfd, tfd, pwd, opwd);
183			if (pw_mkdb(pwd->pw_name, 0) < 0) {
184			pw_abort();
185			return("unable to update password database");
186			}
187
188			return(NULL);
189			}