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
27 #include <sys/types.h>
28 #include <stdio.h>
29 #include <ctype.h>
30 #include <sys/stat.h>
31 #include <project.h>
32 #include <unistd.h>
33 #include <userdefs.h>
34 #include <errno.h>
35 #include <nss_dbdefs.h>
36 #include "users.h"
37 #include "messages.h"
38
39 int
edit_project(char * login,char * new_login,projid_t projids[],int overwrite)40 edit_project(char *login, char *new_login, projid_t projids[], int overwrite)
41 {
42 char **memptr;
43 char t_name[] = "/etc/projtmp.XXXXXX";
44 FILE *e_fptr, *t_fptr;
45 struct project *p_ptr;
46 struct project p_work;
47 char workbuf[NSS_LINELEN_PROJECT];
48 int i, modified = 0;
49 struct stat sbuf;
50 int p_length;
51 char p_string[NSS_LINELEN_PROJECT];
52 long p_curr = 0;
53 int exist;
54 int fd;
55
56 if ((e_fptr = fopen(PROJF_PATH, "r")) == NULL) {
57 return (EX_UPDATE);
58 }
59
60 if (fstat(fileno(e_fptr), &sbuf) != 0)
61 return (EX_UPDATE);
62
63 if ((fd = mkstemp(t_name)) < 0) {
64 return (EX_UPDATE);
65 }
66
67 if ((t_fptr = fdopen(fd, "w+")) == NULL) {
68 (void) close(fd);
69 (void) unlink(t_name);
70 return (EX_UPDATE);
71 }
72
73 /*
74 * Get ownership and permissions correct
75 */
76
77 if (fchmod(fd, sbuf.st_mode) != 0 ||
78 fchown(fd, sbuf.st_uid, sbuf.st_gid) != 0) {
79 (void) fclose(t_fptr);
80 (void) unlink(t_name);
81 return (EX_UPDATE);
82 }
83
84 p_curr = ftell(e_fptr);
85
86 /* Make TMP file look like we want project file to look */
87
88 while (fgets(p_string, NSS_LINELEN_PROJECT - 1, e_fptr)) {
89 /* While there is another group string */
90
91 p_length = strlen(p_string);
92 (void) fseek(e_fptr, p_curr, SEEK_SET);
93 p_ptr = fgetprojent(e_fptr, &p_work, &workbuf,
94 sizeof (workbuf));
95 p_curr = ftell(e_fptr);
96
97 if (p_ptr == NULL) {
98 /*
99 * tried to parse a proj string over
100 * NSS_LINELEN_PROJECT chars
101 */
102 errmsg(M_PROJ_ENTRY_OVF, NSS_LINELEN_PROJECT);
103 modified = 0; /* bad project file: cannot rebuild */
104 break;
105 }
106
107 /* first delete the login from the project, if it's there */
108 if (overwrite || !projids) {
109 if (p_ptr->pj_users != NULL) {
110 for (memptr = p_ptr->pj_users; *memptr;
111 memptr++) {
112 if (strcmp(*memptr, login) == 0) {
113 /* Delete this one */
114 char **from = memptr + 1;
115 p_length -= (strlen(*memptr)+1);
116 do {
117 *(from - 1) = *from;
118 } while (*from++);
119
120 modified++;
121 break;
122 }
123 }
124 }
125 }
126
127 /* now check to see if project is one to add to */
128 if (projids) {
129 for (i = 0; projids[i] != -1; i++) {
130 if (p_ptr->pj_projid == projids[i]) {
131 /* Scan for dups */
132 exist = 0;
133 for (memptr = p_ptr->pj_users; *memptr;
134 memptr++) {
135 if (strncmp(*memptr, new_login ?
136 new_login : login,
137 strlen(*memptr)) == 0)
138 exist++;
139 }
140 p_length += strlen(new_login ?
141 new_login : login) + 1;
142
143 if (p_length >=
144 NSS_LINELEN_PROJECT - 1) {
145 errmsg(M_PROJ_ENTRY_OVF,
146 NSS_LINELEN_PROJECT);
147 break;
148 } else {
149 if (!exist) {
150 *memptr++ = new_login ?
151 new_login : login;
152 *memptr = NULL;
153 modified++;
154 }
155 }
156 }
157 }
158 }
159 putprojent(p_ptr, t_fptr);
160 }
161
162 (void) fclose(e_fptr);
163 (void) fclose(t_fptr);
164
165 /* Now, update project file, if it was modified */
166 if (modified && rename(t_name, PROJF_PATH) < 0) {
167 (void) unlink(t_name);
168 return (EX_UPDATE);
169 }
170
171 (void) unlink(t_name);
172 return (EX_SUCCESS);
173 }
174