1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28#include <sys/types.h>
29#include <stdio.h>
30#include <ctype.h>
31#include <sys/stat.h>
32#include <project.h>
33#include <unistd.h>
34#include <userdefs.h>
35#include <errno.h>
36#include <nss_dbdefs.h>
37#include "users.h"
38#include "messages.h"
39
40int
41edit_project(char *login, char *new_login, projid_t projids[], int overwrite)
42{
43	char **memptr;
44	char t_name[] = "/etc/projtmp.XXXXXX";
45	FILE *e_fptr, *t_fptr;
46	struct project *p_ptr;
47	struct project p_work;
48	char workbuf[NSS_LINELEN_PROJECT];
49	int i, modified = 0;
50	struct stat sbuf;
51	int p_length;
52	char p_string[NSS_LINELEN_PROJECT];
53	long p_curr = 0;
54	int exist;
55	int fd;
56
57	if ((e_fptr = fopen(PROJF_PATH, "r")) == NULL) {
58		return (EX_UPDATE);
59	}
60
61	if (fstat(fileno(e_fptr), &sbuf) != 0)
62		return (EX_UPDATE);
63
64	if ((fd = mkstemp(t_name)) < 0) {
65		return (EX_UPDATE);
66	}
67
68	if ((t_fptr = fdopen(fd, "w+")) == NULL) {
69		(void) close(fd);
70		(void) unlink(t_name);
71		return (EX_UPDATE);
72	}
73
74	/*
75	 * Get ownership and permissions correct
76	 */
77
78	if (fchmod(fd, sbuf.st_mode) != 0 ||
79	    fchown(fd, sbuf.st_uid, sbuf.st_gid) != 0) {
80		(void) fclose(t_fptr);
81		(void) unlink(t_name);
82		return (EX_UPDATE);
83	}
84
85	p_curr = ftell(e_fptr);
86
87	/* Make TMP file look like we want project file to look */
88
89	while (fgets(p_string, NSS_LINELEN_PROJECT - 1, e_fptr)) {
90		/* While there is another group string */
91
92		p_length = strlen(p_string);
93		(void) fseek(e_fptr, p_curr, SEEK_SET);
94		p_ptr = fgetprojent(e_fptr, &p_work, &workbuf,
95		    sizeof (workbuf));
96		p_curr = ftell(e_fptr);
97
98		if (p_ptr == NULL) {
99			/*
100			 * tried to parse a proj string over
101			 * NSS_LINELEN_PROJECT chars
102			 */
103			errmsg(M_PROJ_ENTRY_OVF, NSS_LINELEN_PROJECT);
104			modified = 0; /* bad project file: cannot rebuild */
105			break;
106		}
107
108		/* first delete the login from the project, if it's there */
109		if (overwrite || !projids) {
110			if (p_ptr->pj_users != NULL) {
111				for (memptr = p_ptr->pj_users; *memptr;
112				    memptr++) {
113					if (strcmp(*memptr, login) == 0) {
114						/* Delete this one */
115						char **from = memptr + 1;
116						p_length -= (strlen(*memptr)+1);
117						do {
118							*(from - 1) = *from;
119						} while (*from++);
120
121						modified++;
122						break;
123					}
124				}
125			}
126		}
127
128		/* now check to see if project is one to add to */
129		if (projids) {
130			for (i = 0; projids[i] != -1; i++) {
131				if (p_ptr->pj_projid == projids[i]) {
132					/* Scan for dups */
133					exist = 0;
134					for (memptr = p_ptr->pj_users; *memptr;
135					    memptr++) {
136						if (strncmp(*memptr, new_login ?
137						    new_login : login,
138						    strlen(*memptr)) == 0)
139							exist++;
140					}
141					p_length += strlen(new_login ?
142					    new_login : login) + 1;
143
144					if (p_length >=
145					    NSS_LINELEN_PROJECT - 1) {
146						errmsg(M_PROJ_ENTRY_OVF,
147						    NSS_LINELEN_PROJECT);
148						break;
149					} else {
150						if (!exist) {
151						*memptr++ = new_login ?
152						    new_login : login;
153						*memptr = NULL;
154						modified++;
155						}
156					}
157				}
158			}
159		}
160		putprojent(p_ptr, t_fptr);
161	}
162
163	(void) fclose(e_fptr);
164	(void) fclose(t_fptr);
165
166	/* Now, update project file, if it was modified */
167	if (modified && rename(t_name, PROJF_PATH) < 0) {
168		(void) unlink(t_name);
169		return (EX_UPDATE);
170	}
171
172	(void) unlink(t_name);
173	return (EX_SUCCESS);
174}
175