]>
Commit | Line | Data |
---|---|---|
718e3744 | 1 | /* User authentication for vtysh. |
2 | * Copyright (C) 2000 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | * 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
bb6065a5 | 23 | #include <lib/version.h> |
718e3744 | 24 | |
25 | #include <pwd.h> | |
26 | ||
27 | #ifdef USE_PAM | |
28 | #include <security/pam_appl.h> | |
24cd435b | 29 | #ifdef HAVE_PAM_MISC_H |
718e3744 | 30 | #include <security/pam_misc.h> |
24cd435b | 31 | #endif |
32 | #ifdef HAVE_OPENPAM_H | |
33 | #include <security/openpam.h> | |
34 | #endif | |
718e3744 | 35 | #endif /* USE_PAM */ |
36 | ||
37 | #include "memory.h" | |
38 | #include "linklist.h" | |
39 | #include "command.h" | |
40 | ||
41 | #ifdef USE_PAM | |
42 | static struct pam_conv conv = | |
43 | { | |
24cd435b | 44 | PAM_CONV_FUNC, |
718e3744 | 45 | NULL |
46 | }; | |
47 | ||
48 | int | |
5862ff52 | 49 | vtysh_pam (const char *user) |
718e3744 | 50 | { |
51 | int ret; | |
52 | pam_handle_t *pamh = NULL; | |
53 | ||
54 | /* Start PAM. */ | |
42053f4e | 55 | ret = pam_start(QUAGGA_PROGNAME, user, &conv, &pamh); |
718e3744 | 56 | /* printf ("ret %d\n", ret); */ |
57 | ||
58 | /* Is user really user? */ | |
59 | if (ret == PAM_SUCCESS) | |
60 | ret = pam_authenticate (pamh, 0); | |
61 | /* printf ("ret %d\n", ret); */ | |
62 | ||
63 | #if 0 | |
64 | /* Permitted access? */ | |
65 | if (ret == PAM_SUCCESS) | |
66 | ret = pam_acct_mgmt (pamh, 0); | |
67 | printf ("ret %d\n", ret); | |
68 | ||
69 | if (ret == PAM_AUTHINFO_UNAVAIL) | |
70 | ret = PAM_SUCCESS; | |
71 | #endif /* 0 */ | |
72 | ||
73 | /* This is where we have been authorized or not. */ | |
74 | #ifdef DEBUG | |
75 | if (ret == PAM_SUCCESS) | |
76 | printf("Authenticated\n"); | |
77 | else | |
78 | printf("Not Authenticated\n"); | |
79 | #endif /* DEBUG */ | |
80 | ||
81 | /* close Linux-PAM */ | |
82 | if (pam_end (pamh, ret) != PAM_SUCCESS) | |
83 | { | |
84 | pamh = NULL; | |
85 | fprintf(stderr, "vtysh_pam: failed to release authenticator\n"); | |
86 | exit(1); | |
87 | } | |
88 | ||
89 | return ret == PAM_SUCCESS ? 0 : 1; | |
90 | } | |
91 | #endif /* USE_PAM */ | |
92 | ||
b8994085 | 93 | struct vtysh_user |
718e3744 | 94 | { |
95 | char *name; | |
96 | u_char nopassword; | |
97 | }; | |
98 | ||
99 | struct list *userlist; | |
100 | ||
b8994085 | 101 | struct vtysh_user * |
718e3744 | 102 | user_new () |
103 | { | |
393deb9b | 104 | return XCALLOC (0, sizeof (struct vtysh_user)); |
718e3744 | 105 | } |
106 | ||
107 | void | |
b8994085 | 108 | user_free (struct vtysh_user *user) |
718e3744 | 109 | { |
110 | XFREE (0, user); | |
111 | } | |
112 | ||
b8994085 | 113 | struct vtysh_user * |
5862ff52 | 114 | user_lookup (const char *name) |
718e3744 | 115 | { |
1eb8ef25 | 116 | struct listnode *node, *nnode; |
b8994085 | 117 | struct vtysh_user *user; |
718e3744 | 118 | |
1eb8ef25 | 119 | for (ALL_LIST_ELEMENTS (userlist, node, nnode, user)) |
718e3744 | 120 | { |
121 | if (strcmp (user->name, name) == 0) | |
122 | return user; | |
123 | } | |
124 | return NULL; | |
125 | } | |
126 | ||
127 | void | |
128 | user_config_write () | |
129 | { | |
1eb8ef25 | 130 | struct listnode *node, *nnode; |
b8994085 | 131 | struct vtysh_user *user; |
718e3744 | 132 | |
1eb8ef25 | 133 | for (ALL_LIST_ELEMENTS (userlist, node, nnode, user)) |
718e3744 | 134 | { |
135 | if (user->nopassword) | |
136 | printf (" username %s nopassword\n", user->name); | |
137 | } | |
138 | } | |
139 | ||
b8994085 | 140 | struct vtysh_user * |
5862ff52 | 141 | user_get (const char *name) |
718e3744 | 142 | { |
b8994085 | 143 | struct vtysh_user *user; |
718e3744 | 144 | user = user_lookup (name); |
145 | if (user) | |
146 | return user; | |
147 | ||
148 | user = user_new (); | |
149 | user->name = strdup (name); | |
150 | listnode_add (userlist, user); | |
151 | ||
152 | return user; | |
153 | } | |
154 | ||
155 | DEFUN (username_nopassword, | |
156 | username_nopassword_cmd, | |
157 | "username WORD nopassword", | |
158 | "\n" | |
159 | "\n" | |
160 | "\n") | |
161 | { | |
b8994085 | 162 | struct vtysh_user *user; |
718e3744 | 163 | user = user_get (argv[0]); |
164 | user->nopassword = 1; | |
165 | return CMD_SUCCESS; | |
166 | } | |
167 | ||
168 | int | |
169 | vtysh_auth () | |
170 | { | |
b8994085 | 171 | struct vtysh_user *user; |
718e3744 | 172 | struct passwd *passwd; |
173 | ||
174 | passwd = getpwuid (geteuid ()); | |
175 | ||
176 | user = user_lookup (passwd->pw_name); | |
177 | if (user && user->nopassword) | |
178 | /* Pass through */; | |
179 | else | |
180 | { | |
181 | #ifdef USE_PAM | |
182 | if (vtysh_pam (passwd->pw_name)) | |
183 | exit (0); | |
184 | #endif /* USE_PAM */ | |
185 | } | |
186 | return 0; | |
187 | } | |
188 | ||
189 | void | |
190 | vtysh_user_init () | |
191 | { | |
192 | userlist = list_new (); | |
193 | install_element (CONFIG_NODE, &username_nopassword_cmd); | |
194 | } |