Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id: auth.c 3553 2011-05-05 06:14:19Z nanang $ */ |
Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include "auth.h" |
| 21 | #include <pjlib.h> |
| 22 | |
| 23 | |
| 24 | #define MAX_REALM 80 |
| 25 | #define MAX_USERNAME 32 |
| 26 | #define MAX_PASSWORD 32 |
| 27 | #define MAX_NONCE 32 |
| 28 | |
| 29 | static char g_realm[MAX_REALM]; |
| 30 | |
| 31 | static struct cred_t |
| 32 | { |
| 33 | char username[MAX_USERNAME]; |
| 34 | char passwd[MAX_PASSWORD]; |
| 35 | } g_cred[] = |
| 36 | { |
| 37 | { "100", "100" }, |
| 38 | { "700", "700" }, |
| 39 | { "701", "701" } |
| 40 | }; |
| 41 | |
| 42 | #define THIS_FILE "auth.c" |
| 43 | #define THE_NONCE "pjnath" |
| 44 | #define LOG(expr) PJ_LOG(3,expr) |
| 45 | |
| 46 | |
| 47 | /* |
| 48 | * Initialize TURN authentication subsystem. |
| 49 | */ |
| 50 | PJ_DEF(pj_status_t) pj_turn_auth_init(const char *realm) |
| 51 | { |
| 52 | PJ_ASSERT_RETURN(pj_ansi_strlen(realm) < MAX_REALM, PJ_ENAMETOOLONG); |
| 53 | pj_ansi_strcpy(g_realm, realm); |
| 54 | return PJ_SUCCESS; |
| 55 | } |
| 56 | |
| 57 | /* |
| 58 | * Shutdown TURN authentication subsystem. |
| 59 | */ |
| 60 | PJ_DEF(void) pj_turn_auth_dinit(void) |
| 61 | { |
| 62 | /* Nothing to do */ |
| 63 | } |
| 64 | |
| 65 | |
| 66 | /* |
| 67 | * This function is called by pj_stun_verify_credential() when |
| 68 | * server needs to challenge the request with 401 response. |
| 69 | */ |
| 70 | PJ_DEF(pj_status_t) pj_turn_get_auth(void *user_data, |
| 71 | pj_pool_t *pool, |
| 72 | pj_str_t *realm, |
| 73 | pj_str_t *nonce) |
| 74 | { |
| 75 | PJ_UNUSED_ARG(user_data); |
| 76 | PJ_UNUSED_ARG(pool); |
| 77 | |
| 78 | *realm = pj_str(g_realm); |
| 79 | *nonce = pj_str(THE_NONCE); |
| 80 | |
| 81 | return PJ_SUCCESS; |
| 82 | } |
| 83 | |
| 84 | /* |
| 85 | * This function is called to get the password for the specified username. |
| 86 | * This function is also used to check whether the username is valid. |
| 87 | */ |
| 88 | PJ_DEF(pj_status_t) pj_turn_get_password(const pj_stun_msg *msg, |
| 89 | void *user_data, |
| 90 | const pj_str_t *realm, |
| 91 | const pj_str_t *username, |
| 92 | pj_pool_t *pool, |
| 93 | pj_stun_passwd_type *data_type, |
| 94 | pj_str_t *data) |
| 95 | { |
| 96 | unsigned i; |
| 97 | |
| 98 | PJ_UNUSED_ARG(msg); |
| 99 | PJ_UNUSED_ARG(user_data); |
| 100 | PJ_UNUSED_ARG(pool); |
| 101 | |
| 102 | if (pj_stricmp2(realm, g_realm)) { |
| 103 | LOG((THIS_FILE, "auth error: invalid realm '%.*s'", |
| 104 | (int)realm->slen, realm->ptr)); |
| 105 | return PJ_EINVAL; |
| 106 | } |
| 107 | |
| 108 | for (i=0; i<PJ_ARRAY_SIZE(g_cred); ++i) { |
| 109 | if (pj_stricmp2(username, g_cred[i].username) == 0) { |
| 110 | *data_type = PJ_STUN_PASSWD_PLAIN; |
| 111 | *data = pj_str(g_cred[i].passwd); |
| 112 | return PJ_SUCCESS; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | LOG((THIS_FILE, "auth error: user '%.*s' not found", |
| 117 | (int)username->slen, username->ptr)); |
| 118 | return PJ_ENOTFOUND; |
| 119 | } |
| 120 | |
| 121 | /* |
| 122 | * This function will be called to verify that the NONCE given |
| 123 | * in the message can be accepted. If this callback returns |
| 124 | * PJ_FALSE, 438 (Stale Nonce) response will be created. |
| 125 | */ |
| 126 | PJ_DEF(pj_bool_t) pj_turn_verify_nonce(const pj_stun_msg *msg, |
| 127 | void *user_data, |
| 128 | const pj_str_t *realm, |
| 129 | const pj_str_t *username, |
| 130 | const pj_str_t *nonce) |
| 131 | { |
| 132 | PJ_UNUSED_ARG(msg); |
| 133 | PJ_UNUSED_ARG(user_data); |
| 134 | PJ_UNUSED_ARG(realm); |
| 135 | PJ_UNUSED_ARG(username); |
| 136 | |
| 137 | if (pj_stricmp2(nonce, THE_NONCE)) { |
| 138 | LOG((THIS_FILE, "auth error: invalid nonce '%.*s'", |
| 139 | (int)nonce->slen, nonce->ptr)); |
| 140 | return PJ_FALSE; |
| 141 | } |
| 142 | |
| 143 | return PJ_TRUE; |
| 144 | } |
| 145 | |