xref: /titanic_52/usr/src/cmd/svr4pkg/pkgadm/removecert.c (revision e6eb57e72471348376359efe9105d50bf487a312)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 
28 #include <stdio.h>
29 #include <stdarg.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <sys/types.h>
33 #include <unistd.h>
34 #include <signal.h>
35 #include <locale.h>
36 #include <sys/param.h>
37 #include <openssl/bio.h>
38 
39 #include <libinst.h>
40 #include <pkglib.h>
41 #include <pkgerr.h>
42 #include <keystore.h>
43 #include "pkgadm.h"
44 #include "pkgadm_msgs.h"
45 
46 /*
47  * Name:	removecert
48  * Desc:  Removes a user certificate and associated private key,
49  *	or a trusted certificate, from the keystore.
50  * Syntax:	addcert [-a app] [-k keystore] -n name [-P passarg] [-R altroot]
51  */
52 int
53 removecert(int argc, char **argv)
54 {
55 	int i;
56 	char	keystore_file[MAXPATHLEN] = "";
57 	char	*keystore_base = NULL;
58 	char	*homedir;
59 	char	*passarg = NULL;
60 	char	*altroot = NULL;
61 	char	*prog = NULL;
62 	char	*alias = NULL;
63 	int	ret = 1;
64 	PKG_ERR	*err = NULL;
65 	keystore_handle_t	keystore = NULL;
66 
67 	while ((i = getopt(argc, argv, ":a:k:n:P:R:")) != EOF) {
68 		switch (i) {
69 		case 'a':
70 			prog = optarg;
71 			break;
72 		case 'k':
73 			keystore_base = optarg;
74 			break;
75 		case 'n':
76 			alias = optarg;
77 			break;
78 		case 'P':
79 			passarg = optarg;
80 			break;
81 		case 'R':
82 			altroot = optarg;
83 			break;
84 		case ':':
85 			log_msg(LOG_MSG_ERR, MSG_MISSING_OPERAND, optopt);
86 			/* fallthrough intentional */
87 		case '?':
88 		default:
89 			log_msg(LOG_MSG_ERR, MSG_USAGE);
90 			goto cleanup;
91 		}
92 	}
93 
94 	/* we require a name */
95 	if (alias == NULL) {
96 		log_msg(LOG_MSG_ERR, MSG_USAGE);
97 		goto cleanup;
98 	}
99 
100 	/* should be no arguments left */
101 	if ((argc-optind) > 0) {
102 		log_msg(LOG_MSG_ERR, MSG_USAGE);
103 		goto cleanup;
104 	}
105 
106 	/* set up proper keystore */
107 	if (keystore_base == NULL) {
108 		if (geteuid() == 0 || altroot != NULL) {
109 				/*
110 				 * If we have an alternate
111 				 * root, then we have no choice but to use
112 				 * root's keystore on that alternate root,
113 				 * since there is no way to resolve a
114 				 * user's home dir given an alternate root
115 				 */
116 			if (strlcat(keystore_file, PKGSEC,
117 			    MAXPATHLEN) >= MAXPATHLEN) {
118 				log_msg(LOG_MSG_ERR, MSG_TOO_LONG,
119 				    keystore_file);
120 				goto cleanup;
121 			}
122 		} else {
123 			if ((homedir = getenv("HOME")) == NULL) {
124 				/*
125 				 * not superuser, but no home dir, so
126 				 * use superuser's keystore
127 				 */
128 				if (strlcat(keystore_file, PKGSEC,
129 				    MAXPATHLEN) >= MAXPATHLEN) {
130 					log_msg(LOG_MSG_ERR, MSG_TOO_LONG,
131 					    keystore_file);
132 					goto cleanup;
133 				}
134 			} else {
135 				if (strlcat(keystore_file, homedir,
136 				    MAXPATHLEN) >= MAXPATHLEN) {
137 					log_msg(LOG_MSG_ERR, MSG_TOO_LONG,
138 					    homedir);
139 					goto cleanup;
140 				}
141 				if (strlcat(keystore_file, "/.pkg/security",
142 				    MAXPATHLEN) >= MAXPATHLEN) {
143 					log_msg(LOG_MSG_ERR, MSG_TOO_LONG,
144 					    keystore_file);
145 					goto cleanup;
146 				}
147 			}
148 		}
149 	} else {
150 		if (strlcat(keystore_file, keystore_base,
151 		    MAXPATHLEN) >= MAXPATHLEN) {
152 		    log_msg(LOG_MSG_ERR, MSG_TOO_LONG,
153 			keystore_base);
154 		    goto cleanup;
155 		}
156 	}
157 
158 	err = pkgerr_new();
159 
160 	/* now load the key store */
161 	log_msg(LOG_MSG_DEBUG, "Loading keystore <%s>", keystore_file);
162 
163 	set_passphrase_prompt(MSG_KEYSTORE_PASSPROMPT);
164 	set_passphrase_passarg(passarg);
165 
166 	if (open_keystore(err, keystore_file, prog, pkg_passphrase_cb,
167 	    KEYSTORE_ACCESS_READWRITE | KEYSTORE_PATH_HARD, &keystore) != 0) {
168 		log_pkgerr(LOG_MSG_ERR, err);
169 		goto cleanup;
170 	}
171 
172 	/* now remove the selected certs */
173 	log_msg(LOG_MSG_DEBUG, "Removing certificate(s) with name <%s>",
174 	    alias);
175 	if (delete_cert_and_keys(err, keystore, alias) != 0) {
176 		log_pkgerr(LOG_MSG_ERR, err);
177 		log_msg(LOG_MSG_ERR, MSG_NO_REMOVECERT, alias);
178 		goto cleanup;
179 	}
180 
181 	/* now write it back out */
182 	log_msg(LOG_MSG_DEBUG, "Closing keystore");
183 	set_passphrase_prompt(MSG_KEYSTORE_PASSOUTPROMPT);
184 	set_passphrase_passarg(passarg);
185 	if (close_keystore(err, keystore, pkg_passphrase_cb) != 0) {
186 		log_pkgerr(LOG_MSG_ERR, err);
187 		log_msg(LOG_MSG_ERR, MSG_NO_REMOVECERT, alias);
188 		goto cleanup;
189 	}
190 
191 	log_msg(LOG_MSG_INFO, MSG_REMOVED, alias);
192 
193 	ret = 0;
194 	/* fallthrough intentional */
195 cleanup:
196 
197 	if (err != NULL)
198 		pkgerr_free(err);
199 
200 	return (ret);
201 }
202