孙 毅明 / Mbed 2 deprecated 123

创建mbed

Dependencies:   EthernetInterface SDFileSystem mbed-rtos mbed

EthernetInterface/lwip/netif/ppp/auth.c@1:6465a3f5c58a, 2018-03-06 (annotated)

Committer:
sunyiming
Date:
Tue Mar 06 08:53:46 2018 +0000
Revision:
1:6465a3f5c58a
??OK

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sunyiming 1:6465a3f5c58a 1 /*****************************************************************************
sunyiming 1:6465a3f5c58a 2 * auth.c - Network Authentication and Phase Control program file.
sunyiming 1:6465a3f5c58a 3 *
sunyiming 1:6465a3f5c58a 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
sunyiming 1:6465a3f5c58a 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
sunyiming 1:6465a3f5c58a 6 *
sunyiming 1:6465a3f5c58a 7 * The authors hereby grant permission to use, copy, modify, distribute,
sunyiming 1:6465a3f5c58a 8 * and license this software and its documentation for any purpose, provided
sunyiming 1:6465a3f5c58a 9 * that existing copyright notices are retained in all copies and that this
sunyiming 1:6465a3f5c58a 10 * notice and the following disclaimer are included verbatim in any
sunyiming 1:6465a3f5c58a 11 * distributions. No written agreement, license, or royalty fee is required
sunyiming 1:6465a3f5c58a 12 * for any of the authorized uses.
sunyiming 1:6465a3f5c58a 13 *
sunyiming 1:6465a3f5c58a 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
sunyiming 1:6465a3f5c58a 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
sunyiming 1:6465a3f5c58a 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
sunyiming 1:6465a3f5c58a 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
sunyiming 1:6465a3f5c58a 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sunyiming 1:6465a3f5c58a 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
sunyiming 1:6465a3f5c58a 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
sunyiming 1:6465a3f5c58a 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
sunyiming 1:6465a3f5c58a 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
sunyiming 1:6465a3f5c58a 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sunyiming 1:6465a3f5c58a 24 *
sunyiming 1:6465a3f5c58a 25 ******************************************************************************
sunyiming 1:6465a3f5c58a 26 * REVISION HISTORY
sunyiming 1:6465a3f5c58a 27 *
sunyiming 1:6465a3f5c58a 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
sunyiming 1:6465a3f5c58a 29 * Ported to lwIP.
sunyiming 1:6465a3f5c58a 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
sunyiming 1:6465a3f5c58a 31 * Ported from public pppd code.
sunyiming 1:6465a3f5c58a 32 *****************************************************************************/
sunyiming 1:6465a3f5c58a 33 /*
sunyiming 1:6465a3f5c58a 34 * auth.c - PPP authentication and phase control.
sunyiming 1:6465a3f5c58a 35 *
sunyiming 1:6465a3f5c58a 36 * Copyright (c) 1993 The Australian National University.
sunyiming 1:6465a3f5c58a 37 * All rights reserved.
sunyiming 1:6465a3f5c58a 38 *
sunyiming 1:6465a3f5c58a 39 * Redistribution and use in source and binary forms are permitted
sunyiming 1:6465a3f5c58a 40 * provided that the above copyright notice and this paragraph are
sunyiming 1:6465a3f5c58a 41 * duplicated in all such forms and that any documentation,
sunyiming 1:6465a3f5c58a 42 * advertising materials, and other materials related to such
sunyiming 1:6465a3f5c58a 43 * distribution and use acknowledge that the software was developed
sunyiming 1:6465a3f5c58a 44 * by the Australian National University. The name of the University
sunyiming 1:6465a3f5c58a 45 * may not be used to endorse or promote products derived from this
sunyiming 1:6465a3f5c58a 46 * software without specific prior written permission.
sunyiming 1:6465a3f5c58a 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
sunyiming 1:6465a3f5c58a 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
sunyiming 1:6465a3f5c58a 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
sunyiming 1:6465a3f5c58a 50 *
sunyiming 1:6465a3f5c58a 51 * Copyright (c) 1989 Carnegie Mellon University.
sunyiming 1:6465a3f5c58a 52 * All rights reserved.
sunyiming 1:6465a3f5c58a 53 *
sunyiming 1:6465a3f5c58a 54 * Redistribution and use in source and binary forms are permitted
sunyiming 1:6465a3f5c58a 55 * provided that the above copyright notice and this paragraph are
sunyiming 1:6465a3f5c58a 56 * duplicated in all such forms and that any documentation,
sunyiming 1:6465a3f5c58a 57 * advertising materials, and other materials related to such
sunyiming 1:6465a3f5c58a 58 * distribution and use acknowledge that the software was developed
sunyiming 1:6465a3f5c58a 59 * by Carnegie Mellon University. The name of the
sunyiming 1:6465a3f5c58a 60 * University may not be used to endorse or promote products derived
sunyiming 1:6465a3f5c58a 61 * from this software without specific prior written permission.
sunyiming 1:6465a3f5c58a 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
sunyiming 1:6465a3f5c58a 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
sunyiming 1:6465a3f5c58a 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
sunyiming 1:6465a3f5c58a 65 */
sunyiming 1:6465a3f5c58a 66
sunyiming 1:6465a3f5c58a 67 #include "lwip/opt.h"
sunyiming 1:6465a3f5c58a 68
sunyiming 1:6465a3f5c58a 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
sunyiming 1:6465a3f5c58a 70
sunyiming 1:6465a3f5c58a 71 #include "ppp.h"
sunyiming 1:6465a3f5c58a 72 #include "pppdebug.h"
sunyiming 1:6465a3f5c58a 73
sunyiming 1:6465a3f5c58a 74 #include "fsm.h"
sunyiming 1:6465a3f5c58a 75 #include "lcp.h"
sunyiming 1:6465a3f5c58a 76 #include "pap.h"
sunyiming 1:6465a3f5c58a 77 #include "chap.h"
sunyiming 1:6465a3f5c58a 78 #include "auth.h"
sunyiming 1:6465a3f5c58a 79 #include "ipcp.h"
sunyiming 1:6465a3f5c58a 80
sunyiming 1:6465a3f5c58a 81 #if CBCP_SUPPORT
sunyiming 1:6465a3f5c58a 82 #include "cbcp.h"
sunyiming 1:6465a3f5c58a 83 #endif /* CBCP_SUPPORT */
sunyiming 1:6465a3f5c58a 84
sunyiming 1:6465a3f5c58a 85 #include "lwip/inet.h"
sunyiming 1:6465a3f5c58a 86
sunyiming 1:6465a3f5c58a 87 #include <string.h>
sunyiming 1:6465a3f5c58a 88
sunyiming 1:6465a3f5c58a 89 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 90 /* Bits in scan_authfile return value */
sunyiming 1:6465a3f5c58a 91 #define NONWILD_SERVER 1
sunyiming 1:6465a3f5c58a 92 #define NONWILD_CLIENT 2
sunyiming 1:6465a3f5c58a 93
sunyiming 1:6465a3f5c58a 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
sunyiming 1:6465a3f5c58a 95 #endif /* UNUSED */
sunyiming 1:6465a3f5c58a 96
sunyiming 1:6465a3f5c58a 97 #if PAP_SUPPORT || CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 98 /* The name by which the peer authenticated itself to us. */
sunyiming 1:6465a3f5c58a 99 static char peer_authname[MAXNAMELEN];
sunyiming 1:6465a3f5c58a 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 101
sunyiming 1:6465a3f5c58a 102 /* Records which authentication operations haven't completed yet. */
sunyiming 1:6465a3f5c58a 103 static int auth_pending[NUM_PPP];
sunyiming 1:6465a3f5c58a 104
sunyiming 1:6465a3f5c58a 105 /* Set if we have successfully called plogin() */
sunyiming 1:6465a3f5c58a 106 static int logged_in;
sunyiming 1:6465a3f5c58a 107
sunyiming 1:6465a3f5c58a 108 /* Set if we have run the /etc/ppp/auth-up script. */
sunyiming 1:6465a3f5c58a 109 static int did_authup; /* @todo, we don't need this in lwip*/
sunyiming 1:6465a3f5c58a 110
sunyiming 1:6465a3f5c58a 111 /* List of addresses which the peer may use. */
sunyiming 1:6465a3f5c58a 112 static struct wordlist *addresses[NUM_PPP];
sunyiming 1:6465a3f5c58a 113
sunyiming 1:6465a3f5c58a 114 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 115 /* Wordlist giving addresses which the peer may use
sunyiming 1:6465a3f5c58a 116 without authenticating itself. */
sunyiming 1:6465a3f5c58a 117 static struct wordlist *noauth_addrs;
sunyiming 1:6465a3f5c58a 118
sunyiming 1:6465a3f5c58a 119 /* Extra options to apply, from the secrets file entry for the peer. */
sunyiming 1:6465a3f5c58a 120 static struct wordlist *extra_options;
sunyiming 1:6465a3f5c58a 121 #endif /* UNUSED */
sunyiming 1:6465a3f5c58a 122
sunyiming 1:6465a3f5c58a 123 /* Number of network protocols which we have opened. */
sunyiming 1:6465a3f5c58a 124 static int num_np_open;
sunyiming 1:6465a3f5c58a 125
sunyiming 1:6465a3f5c58a 126 /* Number of network protocols which have come up. */
sunyiming 1:6465a3f5c58a 127 static int num_np_up;
sunyiming 1:6465a3f5c58a 128
sunyiming 1:6465a3f5c58a 129 #if PAP_SUPPORT || CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
sunyiming 1:6465a3f5c58a 131 static int passwd_from_file;
sunyiming 1:6465a3f5c58a 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 133
sunyiming 1:6465a3f5c58a 134 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 135 /* Set if we require authentication only because we have a default route. */
sunyiming 1:6465a3f5c58a 136 static bool default_auth;
sunyiming 1:6465a3f5c58a 137
sunyiming 1:6465a3f5c58a 138 /* Hook to enable a plugin to control the idle time limit */
sunyiming 1:6465a3f5c58a 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
sunyiming 1:6465a3f5c58a 140
sunyiming 1:6465a3f5c58a 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
sunyiming 1:6465a3f5c58a 142 int (*pap_check_hook) __P((void)) = NULL;
sunyiming 1:6465a3f5c58a 143
sunyiming 1:6465a3f5c58a 144 /* Hook for a plugin to check the PAP user and password */
sunyiming 1:6465a3f5c58a 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
sunyiming 1:6465a3f5c58a 146 struct wordlist **paddrs,
sunyiming 1:6465a3f5c58a 147 struct wordlist **popts)) = NULL;
sunyiming 1:6465a3f5c58a 148
sunyiming 1:6465a3f5c58a 149 /* Hook for a plugin to know about the PAP user logout */
sunyiming 1:6465a3f5c58a 150 void (*pap_logout_hook) __P((void)) = NULL;
sunyiming 1:6465a3f5c58a 151
sunyiming 1:6465a3f5c58a 152 /* Hook for a plugin to get the PAP password for authenticating us */
sunyiming 1:6465a3f5c58a 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
sunyiming 1:6465a3f5c58a 154
sunyiming 1:6465a3f5c58a 155 /*
sunyiming 1:6465a3f5c58a 156 * This is used to ensure that we don't start an auth-up/down
sunyiming 1:6465a3f5c58a 157 * script while one is already running.
sunyiming 1:6465a3f5c58a 158 */
sunyiming 1:6465a3f5c58a 159 enum script_state {
sunyiming 1:6465a3f5c58a 160 s_down,
sunyiming 1:6465a3f5c58a 161 s_up
sunyiming 1:6465a3f5c58a 162 };
sunyiming 1:6465a3f5c58a 163
sunyiming 1:6465a3f5c58a 164 static enum script_state auth_state = s_down;
sunyiming 1:6465a3f5c58a 165 static enum script_state auth_script_state = s_down;
sunyiming 1:6465a3f5c58a 166 static pid_t auth_script_pid = 0;
sunyiming 1:6465a3f5c58a 167
sunyiming 1:6465a3f5c58a 168 /*
sunyiming 1:6465a3f5c58a 169 * Option variables.
sunyiming 1:6465a3f5c58a 170 * lwip: some of these are present in the ppp_settings structure
sunyiming 1:6465a3f5c58a 171 */
sunyiming 1:6465a3f5c58a 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
sunyiming 1:6465a3f5c58a 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
sunyiming 1:6465a3f5c58a 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
sunyiming 1:6465a3f5c58a 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
sunyiming 1:6465a3f5c58a 176 bool usehostname = 0; /* Use hostname for our_name */
sunyiming 1:6465a3f5c58a 177 bool auth_required = 0; /* Always require authentication from peer */
sunyiming 1:6465a3f5c58a 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
sunyiming 1:6465a3f5c58a 179 bool explicit_remote = 0; /* User specified explicit remote name */
sunyiming 1:6465a3f5c58a 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
sunyiming 1:6465a3f5c58a 181
sunyiming 1:6465a3f5c58a 182 #endif /* UNUSED */
sunyiming 1:6465a3f5c58a 183
sunyiming 1:6465a3f5c58a 184 /* Bits in auth_pending[] */
sunyiming 1:6465a3f5c58a 185 #define PAP_WITHPEER 1
sunyiming 1:6465a3f5c58a 186 #define PAP_PEER 2
sunyiming 1:6465a3f5c58a 187 #define CHAP_WITHPEER 4
sunyiming 1:6465a3f5c58a 188 #define CHAP_PEER 8
sunyiming 1:6465a3f5c58a 189
sunyiming 1:6465a3f5c58a 190 /* @todo, move this somewhere */
sunyiming 1:6465a3f5c58a 191 /* Used for storing a sequence of words. Usually malloced. */
sunyiming 1:6465a3f5c58a 192 struct wordlist {
sunyiming 1:6465a3f5c58a 193 struct wordlist *next;
sunyiming 1:6465a3f5c58a 194 char word[1];
sunyiming 1:6465a3f5c58a 195 };
sunyiming 1:6465a3f5c58a 196
sunyiming 1:6465a3f5c58a 197
sunyiming 1:6465a3f5c58a 198 extern char *crypt (const char *, const char *);
sunyiming 1:6465a3f5c58a 199
sunyiming 1:6465a3f5c58a 200 /* Prototypes for procedures local to this file. */
sunyiming 1:6465a3f5c58a 201
sunyiming 1:6465a3f5c58a 202 static void network_phase (int);
sunyiming 1:6465a3f5c58a 203 static void check_idle (void *);
sunyiming 1:6465a3f5c58a 204 static void connect_time_expired (void *);
sunyiming 1:6465a3f5c58a 205 #if 0
sunyiming 1:6465a3f5c58a 206 static int plogin (char *, char *, char **, int *);
sunyiming 1:6465a3f5c58a 207 #endif
sunyiming 1:6465a3f5c58a 208 static void plogout (void);
sunyiming 1:6465a3f5c58a 209 static int null_login (int);
sunyiming 1:6465a3f5c58a 210 static int get_pap_passwd (int, char *, char *);
sunyiming 1:6465a3f5c58a 211 static int have_pap_secret (void);
sunyiming 1:6465a3f5c58a 212 static int have_chap_secret (char *, char *, u32_t);
sunyiming 1:6465a3f5c58a 213 static int ip_addr_check (u32_t, struct wordlist *);
sunyiming 1:6465a3f5c58a 214
sunyiming 1:6465a3f5c58a 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 216 static int scan_authfile (FILE *, char *, char *, char *,
sunyiming 1:6465a3f5c58a 217 struct wordlist **, struct wordlist **,
sunyiming 1:6465a3f5c58a 218 char *);
sunyiming 1:6465a3f5c58a 219 static void free_wordlist (struct wordlist *);
sunyiming 1:6465a3f5c58a 220 static void auth_script (char *);
sunyiming 1:6465a3f5c58a 221 static void auth_script_done (void *);
sunyiming 1:6465a3f5c58a 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
sunyiming 1:6465a3f5c58a 223 static int some_ip_ok (struct wordlist *);
sunyiming 1:6465a3f5c58a 224 static int setupapfile (char **);
sunyiming 1:6465a3f5c58a 225 static int privgroup (char **);
sunyiming 1:6465a3f5c58a 226 static int set_noauth_addr (char **);
sunyiming 1:6465a3f5c58a 227 static void check_access (FILE *, char *);
sunyiming 1:6465a3f5c58a 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 229
sunyiming 1:6465a3f5c58a 230 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 231 /*
sunyiming 1:6465a3f5c58a 232 * Authentication-related options.
sunyiming 1:6465a3f5c58a 233 */
sunyiming 1:6465a3f5c58a 234 option_t auth_options[] = {
sunyiming 1:6465a3f5c58a 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
sunyiming 1:6465a3f5c58a 236 "Require PAP authentication from peer", 1, &auth_required },
sunyiming 1:6465a3f5c58a 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
sunyiming 1:6465a3f5c58a 238 "Require PAP authentication from peer", 1, &auth_required },
sunyiming 1:6465a3f5c58a 239 { "refuse-pap", o_bool, &refuse_pap,
sunyiming 1:6465a3f5c58a 240 "Don't agree to auth to peer with PAP", 1 },
sunyiming 1:6465a3f5c58a 241 { "-pap", o_bool, &refuse_pap,
sunyiming 1:6465a3f5c58a 242 "Don't allow PAP authentication with peer", 1 },
sunyiming 1:6465a3f5c58a 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
sunyiming 1:6465a3f5c58a 244 "Require CHAP authentication from peer", 1, &auth_required },
sunyiming 1:6465a3f5c58a 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
sunyiming 1:6465a3f5c58a 246 "Require CHAP authentication from peer", 1, &auth_required },
sunyiming 1:6465a3f5c58a 247 { "refuse-chap", o_bool, &refuse_chap,
sunyiming 1:6465a3f5c58a 248 "Don't agree to auth to peer with CHAP", 1 },
sunyiming 1:6465a3f5c58a 249 { "-chap", o_bool, &refuse_chap,
sunyiming 1:6465a3f5c58a 250 "Don't allow CHAP authentication with peer", 1 },
sunyiming 1:6465a3f5c58a 251 { "name", o_string, our_name,
sunyiming 1:6465a3f5c58a 252 "Set local name for authentication",
sunyiming 1:6465a3f5c58a 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
sunyiming 1:6465a3f5c58a 254 { "user", o_string, user,
sunyiming 1:6465a3f5c58a 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
sunyiming 1:6465a3f5c58a 256 { "usehostname", o_bool, &usehostname,
sunyiming 1:6465a3f5c58a 257 "Must use hostname for authentication", 1 },
sunyiming 1:6465a3f5c58a 258 { "remotename", o_string, remote_name,
sunyiming 1:6465a3f5c58a 259 "Set remote name for authentication", OPT_STATIC,
sunyiming 1:6465a3f5c58a 260 &explicit_remote, MAXNAMELEN },
sunyiming 1:6465a3f5c58a 261 { "auth", o_bool, &auth_required,
sunyiming 1:6465a3f5c58a 262 "Require authentication from peer", 1 },
sunyiming 1:6465a3f5c58a 263 { "noauth", o_bool, &auth_required,
sunyiming 1:6465a3f5c58a 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
sunyiming 1:6465a3f5c58a 265 { "login", o_bool, &uselogin,
sunyiming 1:6465a3f5c58a 266 "Use system password database for PAP", 1 },
sunyiming 1:6465a3f5c58a 267 { "papcrypt", o_bool, &cryptpap,
sunyiming 1:6465a3f5c58a 268 "PAP passwords are encrypted", 1 },
sunyiming 1:6465a3f5c58a 269 { "+ua", o_special, (void *)setupapfile,
sunyiming 1:6465a3f5c58a 270 "Get PAP user and password from file" },
sunyiming 1:6465a3f5c58a 271 { "password", o_string, passwd,
sunyiming 1:6465a3f5c58a 272 "Password for authenticating us to the peer", OPT_STATIC,
sunyiming 1:6465a3f5c58a 273 NULL, MAXSECRETLEN },
sunyiming 1:6465a3f5c58a 274 { "privgroup", o_special, (void *)privgroup,
sunyiming 1:6465a3f5c58a 275 "Allow group members to use privileged options", OPT_PRIV },
sunyiming 1:6465a3f5c58a 276 { "allow-ip", o_special, (void *)set_noauth_addr,
sunyiming 1:6465a3f5c58a 277 "Set IP address(es) which can be used without authentication",
sunyiming 1:6465a3f5c58a 278 OPT_PRIV },
sunyiming 1:6465a3f5c58a 279 { NULL }
sunyiming 1:6465a3f5c58a 280 };
sunyiming 1:6465a3f5c58a 281 #endif /* UNUSED */
sunyiming 1:6465a3f5c58a 282 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 283 /*
sunyiming 1:6465a3f5c58a 284 * setupapfile - specifies UPAP info for authenticating with peer.
sunyiming 1:6465a3f5c58a 285 */
sunyiming 1:6465a3f5c58a 286 static int
sunyiming 1:6465a3f5c58a 287 setupapfile(char **argv)
sunyiming 1:6465a3f5c58a 288 {
sunyiming 1:6465a3f5c58a 289 FILE * ufile;
sunyiming 1:6465a3f5c58a 290 int l;
sunyiming 1:6465a3f5c58a 291
sunyiming 1:6465a3f5c58a 292 lcp_allowoptions[0].neg_upap = 1;
sunyiming 1:6465a3f5c58a 293
sunyiming 1:6465a3f5c58a 294 /* open user info file */
sunyiming 1:6465a3f5c58a 295 seteuid(getuid());
sunyiming 1:6465a3f5c58a 296 ufile = fopen(*argv, "r");
sunyiming 1:6465a3f5c58a 297 seteuid(0);
sunyiming 1:6465a3f5c58a 298 if (ufile == NULL) {
sunyiming 1:6465a3f5c58a 299 option_error("unable to open user login data file %s", *argv);
sunyiming 1:6465a3f5c58a 300 return 0;
sunyiming 1:6465a3f5c58a 301 }
sunyiming 1:6465a3f5c58a 302 check_access(ufile, *argv);
sunyiming 1:6465a3f5c58a 303
sunyiming 1:6465a3f5c58a 304 /* get username */
sunyiming 1:6465a3f5c58a 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
sunyiming 1:6465a3f5c58a 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
sunyiming 1:6465a3f5c58a 307 option_error("unable to read user login data file %s", *argv);
sunyiming 1:6465a3f5c58a 308 return 0;
sunyiming 1:6465a3f5c58a 309 }
sunyiming 1:6465a3f5c58a 310 fclose(ufile);
sunyiming 1:6465a3f5c58a 311
sunyiming 1:6465a3f5c58a 312 /* get rid of newlines */
sunyiming 1:6465a3f5c58a 313 l = strlen(user);
sunyiming 1:6465a3f5c58a 314 if (l > 0 && user[l-1] == '\n')
sunyiming 1:6465a3f5c58a 315 user[l-1] = 0;
sunyiming 1:6465a3f5c58a 316 l = strlen(passwd);
sunyiming 1:6465a3f5c58a 317 if (l > 0 && passwd[l-1] == '\n')
sunyiming 1:6465a3f5c58a 318 passwd[l-1] = 0;
sunyiming 1:6465a3f5c58a 319
sunyiming 1:6465a3f5c58a 320 return (1);
sunyiming 1:6465a3f5c58a 321 }
sunyiming 1:6465a3f5c58a 322 #endif /* UNUSED */
sunyiming 1:6465a3f5c58a 323
sunyiming 1:6465a3f5c58a 324 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 325 /*
sunyiming 1:6465a3f5c58a 326 * privgroup - allow members of the group to have privileged access.
sunyiming 1:6465a3f5c58a 327 */
sunyiming 1:6465a3f5c58a 328 static int
sunyiming 1:6465a3f5c58a 329 privgroup(char **argv)
sunyiming 1:6465a3f5c58a 330 {
sunyiming 1:6465a3f5c58a 331 struct group *g;
sunyiming 1:6465a3f5c58a 332 int i;
sunyiming 1:6465a3f5c58a 333
sunyiming 1:6465a3f5c58a 334 g = getgrnam(*argv);
sunyiming 1:6465a3f5c58a 335 if (g == 0) {
sunyiming 1:6465a3f5c58a 336 option_error("group %s is unknown", *argv);
sunyiming 1:6465a3f5c58a 337 return 0;
sunyiming 1:6465a3f5c58a 338 }
sunyiming 1:6465a3f5c58a 339 for (i = 0; i < ngroups; ++i) {
sunyiming 1:6465a3f5c58a 340 if (groups[i] == g->gr_gid) {
sunyiming 1:6465a3f5c58a 341 privileged = 1;
sunyiming 1:6465a3f5c58a 342 break;
sunyiming 1:6465a3f5c58a 343 }
sunyiming 1:6465a3f5c58a 344 }
sunyiming 1:6465a3f5c58a 345 return 1;
sunyiming 1:6465a3f5c58a 346 }
sunyiming 1:6465a3f5c58a 347 #endif
sunyiming 1:6465a3f5c58a 348
sunyiming 1:6465a3f5c58a 349 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 350 /*
sunyiming 1:6465a3f5c58a 351 * set_noauth_addr - set address(es) that can be used without authentication.
sunyiming 1:6465a3f5c58a 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
sunyiming 1:6465a3f5c58a 353 */
sunyiming 1:6465a3f5c58a 354 static int
sunyiming 1:6465a3f5c58a 355 set_noauth_addr(char **argv)
sunyiming 1:6465a3f5c58a 356 {
sunyiming 1:6465a3f5c58a 357 char *addr = *argv;
sunyiming 1:6465a3f5c58a 358 int l = strlen(addr);
sunyiming 1:6465a3f5c58a 359 struct wordlist *wp;
sunyiming 1:6465a3f5c58a 360
sunyiming 1:6465a3f5c58a 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
sunyiming 1:6465a3f5c58a 362 if (wp == NULL)
sunyiming 1:6465a3f5c58a 363 novm("allow-ip argument");
sunyiming 1:6465a3f5c58a 364 wp->word = (char *) (wp + 1);
sunyiming 1:6465a3f5c58a 365 wp->next = noauth_addrs;
sunyiming 1:6465a3f5c58a 366 BCOPY(addr, wp->word, l);
sunyiming 1:6465a3f5c58a 367 noauth_addrs = wp;
sunyiming 1:6465a3f5c58a 368 return 1;
sunyiming 1:6465a3f5c58a 369 }
sunyiming 1:6465a3f5c58a 370 #endif /* UNUSED */
sunyiming 1:6465a3f5c58a 371
sunyiming 1:6465a3f5c58a 372 /*
sunyiming 1:6465a3f5c58a 373 * An Open on LCP has requested a change from Dead to Establish phase.
sunyiming 1:6465a3f5c58a 374 * Do what's necessary to bring the physical layer up.
sunyiming 1:6465a3f5c58a 375 */
sunyiming 1:6465a3f5c58a 376 void
sunyiming 1:6465a3f5c58a 377 link_required(int unit)
sunyiming 1:6465a3f5c58a 378 {
sunyiming 1:6465a3f5c58a 379 LWIP_UNUSED_ARG(unit);
sunyiming 1:6465a3f5c58a 380
sunyiming 1:6465a3f5c58a 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
sunyiming 1:6465a3f5c58a 382 }
sunyiming 1:6465a3f5c58a 383
sunyiming 1:6465a3f5c58a 384 /*
sunyiming 1:6465a3f5c58a 385 * LCP has terminated the link; go to the Dead phase and take the
sunyiming 1:6465a3f5c58a 386 * physical layer down.
sunyiming 1:6465a3f5c58a 387 */
sunyiming 1:6465a3f5c58a 388 void
sunyiming 1:6465a3f5c58a 389 link_terminated(int unit)
sunyiming 1:6465a3f5c58a 390 {
sunyiming 1:6465a3f5c58a 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
sunyiming 1:6465a3f5c58a 392 if (lcp_phase[unit] == PHASE_DEAD) {
sunyiming 1:6465a3f5c58a 393 return;
sunyiming 1:6465a3f5c58a 394 }
sunyiming 1:6465a3f5c58a 395 if (logged_in) {
sunyiming 1:6465a3f5c58a 396 plogout();
sunyiming 1:6465a3f5c58a 397 }
sunyiming 1:6465a3f5c58a 398 lcp_phase[unit] = PHASE_DEAD;
sunyiming 1:6465a3f5c58a 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
sunyiming 1:6465a3f5c58a 400 pppLinkTerminated(unit);
sunyiming 1:6465a3f5c58a 401 }
sunyiming 1:6465a3f5c58a 402
sunyiming 1:6465a3f5c58a 403 /*
sunyiming 1:6465a3f5c58a 404 * LCP has gone down; it will either die or try to re-establish.
sunyiming 1:6465a3f5c58a 405 */
sunyiming 1:6465a3f5c58a 406 void
sunyiming 1:6465a3f5c58a 407 link_down(int unit)
sunyiming 1:6465a3f5c58a 408 {
sunyiming 1:6465a3f5c58a 409 int i;
sunyiming 1:6465a3f5c58a 410 struct protent *protp;
sunyiming 1:6465a3f5c58a 411
sunyiming 1:6465a3f5c58a 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
sunyiming 1:6465a3f5c58a 413
sunyiming 1:6465a3f5c58a 414 if (did_authup) {
sunyiming 1:6465a3f5c58a 415 /* XXX Do link down processing. */
sunyiming 1:6465a3f5c58a 416 did_authup = 0;
sunyiming 1:6465a3f5c58a 417 }
sunyiming 1:6465a3f5c58a 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
sunyiming 1:6465a3f5c58a 419 if (!protp->enabled_flag) {
sunyiming 1:6465a3f5c58a 420 continue;
sunyiming 1:6465a3f5c58a 421 }
sunyiming 1:6465a3f5c58a 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
sunyiming 1:6465a3f5c58a 423 (*protp->lowerdown)(unit);
sunyiming 1:6465a3f5c58a 424 }
sunyiming 1:6465a3f5c58a 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
sunyiming 1:6465a3f5c58a 426 (*protp->close)(unit, "LCP down");
sunyiming 1:6465a3f5c58a 427 }
sunyiming 1:6465a3f5c58a 428 }
sunyiming 1:6465a3f5c58a 429 num_np_open = 0; /* number of network protocols we have opened */
sunyiming 1:6465a3f5c58a 430 num_np_up = 0; /* Number of network protocols which have come up */
sunyiming 1:6465a3f5c58a 431
sunyiming 1:6465a3f5c58a 432 if (lcp_phase[unit] != PHASE_DEAD) {
sunyiming 1:6465a3f5c58a 433 lcp_phase[unit] = PHASE_TERMINATE;
sunyiming 1:6465a3f5c58a 434 }
sunyiming 1:6465a3f5c58a 435 pppLinkDown(unit);
sunyiming 1:6465a3f5c58a 436 }
sunyiming 1:6465a3f5c58a 437
sunyiming 1:6465a3f5c58a 438 /*
sunyiming 1:6465a3f5c58a 439 * The link is established.
sunyiming 1:6465a3f5c58a 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
sunyiming 1:6465a3f5c58a 441 */
sunyiming 1:6465a3f5c58a 442 void
sunyiming 1:6465a3f5c58a 443 link_established(int unit)
sunyiming 1:6465a3f5c58a 444 {
sunyiming 1:6465a3f5c58a 445 int auth;
sunyiming 1:6465a3f5c58a 446 int i;
sunyiming 1:6465a3f5c58a 447 struct protent *protp;
sunyiming 1:6465a3f5c58a 448 lcp_options *wo = &lcp_wantoptions[unit];
sunyiming 1:6465a3f5c58a 449 lcp_options *go = &lcp_gotoptions[unit];
sunyiming 1:6465a3f5c58a 450 #if PAP_SUPPORT || CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 451 lcp_options *ho = &lcp_hisoptions[unit];
sunyiming 1:6465a3f5c58a 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 453
sunyiming 1:6465a3f5c58a 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
sunyiming 1:6465a3f5c58a 455 /*
sunyiming 1:6465a3f5c58a 456 * Tell higher-level protocols that LCP is up.
sunyiming 1:6465a3f5c58a 457 */
sunyiming 1:6465a3f5c58a 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
sunyiming 1:6465a3f5c58a 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
sunyiming 1:6465a3f5c58a 460 (*protp->lowerup)(unit);
sunyiming 1:6465a3f5c58a 461 }
sunyiming 1:6465a3f5c58a 462 }
sunyiming 1:6465a3f5c58a 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
sunyiming 1:6465a3f5c58a 464 /*
sunyiming 1:6465a3f5c58a 465 * We wanted the peer to authenticate itself, and it refused:
sunyiming 1:6465a3f5c58a 466 * treat it as though it authenticated with PAP using a username
sunyiming 1:6465a3f5c58a 467 * of "" and a password of "". If that's not OK, boot it out.
sunyiming 1:6465a3f5c58a 468 */
sunyiming 1:6465a3f5c58a 469 if (!wo->neg_upap || !null_login(unit)) {
sunyiming 1:6465a3f5c58a 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
sunyiming 1:6465a3f5c58a 471 lcp_close(unit, "peer refused to authenticate");
sunyiming 1:6465a3f5c58a 472 return;
sunyiming 1:6465a3f5c58a 473 }
sunyiming 1:6465a3f5c58a 474 }
sunyiming 1:6465a3f5c58a 475
sunyiming 1:6465a3f5c58a 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
sunyiming 1:6465a3f5c58a 477 auth = 0;
sunyiming 1:6465a3f5c58a 478 #if CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 479 if (go->neg_chap) {
sunyiming 1:6465a3f5c58a 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
sunyiming 1:6465a3f5c58a 481 auth |= CHAP_PEER;
sunyiming 1:6465a3f5c58a 482 }
sunyiming 1:6465a3f5c58a 483 #endif /* CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 484 #if PAP_SUPPORT && CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 485 else
sunyiming 1:6465a3f5c58a 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 487 #if PAP_SUPPORT
sunyiming 1:6465a3f5c58a 488 if (go->neg_upap) {
sunyiming 1:6465a3f5c58a 489 upap_authpeer(unit);
sunyiming 1:6465a3f5c58a 490 auth |= PAP_PEER;
sunyiming 1:6465a3f5c58a 491 }
sunyiming 1:6465a3f5c58a 492 #endif /* PAP_SUPPORT */
sunyiming 1:6465a3f5c58a 493 #if CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 494 if (ho->neg_chap) {
sunyiming 1:6465a3f5c58a 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
sunyiming 1:6465a3f5c58a 496 auth |= CHAP_WITHPEER;
sunyiming 1:6465a3f5c58a 497 }
sunyiming 1:6465a3f5c58a 498 #endif /* CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 499 #if PAP_SUPPORT && CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 500 else
sunyiming 1:6465a3f5c58a 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 502 #if PAP_SUPPORT
sunyiming 1:6465a3f5c58a 503 if (ho->neg_upap) {
sunyiming 1:6465a3f5c58a 504 if (ppp_settings.passwd[0] == 0) {
sunyiming 1:6465a3f5c58a 505 passwd_from_file = 1;
sunyiming 1:6465a3f5c58a 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
sunyiming 1:6465a3f5c58a 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
sunyiming 1:6465a3f5c58a 508 }
sunyiming 1:6465a3f5c58a 509 }
sunyiming 1:6465a3f5c58a 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
sunyiming 1:6465a3f5c58a 511 auth |= PAP_WITHPEER;
sunyiming 1:6465a3f5c58a 512 }
sunyiming 1:6465a3f5c58a 513 #endif /* PAP_SUPPORT */
sunyiming 1:6465a3f5c58a 514 auth_pending[unit] = auth;
sunyiming 1:6465a3f5c58a 515
sunyiming 1:6465a3f5c58a 516 if (!auth) {
sunyiming 1:6465a3f5c58a 517 network_phase(unit);
sunyiming 1:6465a3f5c58a 518 }
sunyiming 1:6465a3f5c58a 519 }
sunyiming 1:6465a3f5c58a 520
sunyiming 1:6465a3f5c58a 521 /*
sunyiming 1:6465a3f5c58a 522 * Proceed to the network phase.
sunyiming 1:6465a3f5c58a 523 */
sunyiming 1:6465a3f5c58a 524 static void
sunyiming 1:6465a3f5c58a 525 network_phase(int unit)
sunyiming 1:6465a3f5c58a 526 {
sunyiming 1:6465a3f5c58a 527 int i;
sunyiming 1:6465a3f5c58a 528 struct protent *protp;
sunyiming 1:6465a3f5c58a 529 lcp_options *go = &lcp_gotoptions[unit];
sunyiming 1:6465a3f5c58a 530
sunyiming 1:6465a3f5c58a 531 /*
sunyiming 1:6465a3f5c58a 532 * If the peer had to authenticate, run the auth-up script now.
sunyiming 1:6465a3f5c58a 533 */
sunyiming 1:6465a3f5c58a 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
sunyiming 1:6465a3f5c58a 535 /* XXX Do setup for peer authentication. */
sunyiming 1:6465a3f5c58a 536 did_authup = 1;
sunyiming 1:6465a3f5c58a 537 }
sunyiming 1:6465a3f5c58a 538
sunyiming 1:6465a3f5c58a 539 #if CBCP_SUPPORT
sunyiming 1:6465a3f5c58a 540 /*
sunyiming 1:6465a3f5c58a 541 * If we negotiated callback, do it now.
sunyiming 1:6465a3f5c58a 542 */
sunyiming 1:6465a3f5c58a 543 if (go->neg_cbcp) {
sunyiming 1:6465a3f5c58a 544 lcp_phase[unit] = PHASE_CALLBACK;
sunyiming 1:6465a3f5c58a 545 (*cbcp_protent.open)(unit);
sunyiming 1:6465a3f5c58a 546 return;
sunyiming 1:6465a3f5c58a 547 }
sunyiming 1:6465a3f5c58a 548 #endif /* CBCP_SUPPORT */
sunyiming 1:6465a3f5c58a 549
sunyiming 1:6465a3f5c58a 550 lcp_phase[unit] = PHASE_NETWORK;
sunyiming 1:6465a3f5c58a 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
sunyiming 1:6465a3f5c58a 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
sunyiming 1:6465a3f5c58a 553 (*protp->open)(unit);
sunyiming 1:6465a3f5c58a 554 if (protp->protocol != PPP_CCP) {
sunyiming 1:6465a3f5c58a 555 ++num_np_open;
sunyiming 1:6465a3f5c58a 556 }
sunyiming 1:6465a3f5c58a 557 }
sunyiming 1:6465a3f5c58a 558 }
sunyiming 1:6465a3f5c58a 559
sunyiming 1:6465a3f5c58a 560 if (num_np_open == 0) {
sunyiming 1:6465a3f5c58a 561 /* nothing to do */
sunyiming 1:6465a3f5c58a 562 lcp_close(0, "No network protocols running");
sunyiming 1:6465a3f5c58a 563 }
sunyiming 1:6465a3f5c58a 564 }
sunyiming 1:6465a3f5c58a 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
sunyiming 1:6465a3f5c58a 566
sunyiming 1:6465a3f5c58a 567 /*
sunyiming 1:6465a3f5c58a 568 * The peer has failed to authenticate himself using `protocol'.
sunyiming 1:6465a3f5c58a 569 */
sunyiming 1:6465a3f5c58a 570 void
sunyiming 1:6465a3f5c58a 571 auth_peer_fail(int unit, u16_t protocol)
sunyiming 1:6465a3f5c58a 572 {
sunyiming 1:6465a3f5c58a 573 LWIP_UNUSED_ARG(protocol);
sunyiming 1:6465a3f5c58a 574
sunyiming 1:6465a3f5c58a 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
sunyiming 1:6465a3f5c58a 576 /*
sunyiming 1:6465a3f5c58a 577 * Authentication failure: take the link down
sunyiming 1:6465a3f5c58a 578 */
sunyiming 1:6465a3f5c58a 579 lcp_close(unit, "Authentication failed");
sunyiming 1:6465a3f5c58a 580 }
sunyiming 1:6465a3f5c58a 581
sunyiming 1:6465a3f5c58a 582
sunyiming 1:6465a3f5c58a 583 #if PAP_SUPPORT || CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 584 /*
sunyiming 1:6465a3f5c58a 585 * The peer has been successfully authenticated using `protocol'.
sunyiming 1:6465a3f5c58a 586 */
sunyiming 1:6465a3f5c58a 587 void
sunyiming 1:6465a3f5c58a 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
sunyiming 1:6465a3f5c58a 589 {
sunyiming 1:6465a3f5c58a 590 int pbit;
sunyiming 1:6465a3f5c58a 591
sunyiming 1:6465a3f5c58a 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
sunyiming 1:6465a3f5c58a 593 switch (protocol) {
sunyiming 1:6465a3f5c58a 594 case PPP_CHAP:
sunyiming 1:6465a3f5c58a 595 pbit = CHAP_PEER;
sunyiming 1:6465a3f5c58a 596 break;
sunyiming 1:6465a3f5c58a 597 case PPP_PAP:
sunyiming 1:6465a3f5c58a 598 pbit = PAP_PEER;
sunyiming 1:6465a3f5c58a 599 break;
sunyiming 1:6465a3f5c58a 600 default:
sunyiming 1:6465a3f5c58a 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
sunyiming 1:6465a3f5c58a 602 return;
sunyiming 1:6465a3f5c58a 603 }
sunyiming 1:6465a3f5c58a 604
sunyiming 1:6465a3f5c58a 605 /*
sunyiming 1:6465a3f5c58a 606 * Save the authenticated name of the peer for later.
sunyiming 1:6465a3f5c58a 607 */
sunyiming 1:6465a3f5c58a 608 if (namelen > (int)sizeof(peer_authname) - 1) {
sunyiming 1:6465a3f5c58a 609 namelen = sizeof(peer_authname) - 1;
sunyiming 1:6465a3f5c58a 610 }
sunyiming 1:6465a3f5c58a 611 BCOPY(name, peer_authname, namelen);
sunyiming 1:6465a3f5c58a 612 peer_authname[namelen] = 0;
sunyiming 1:6465a3f5c58a 613
sunyiming 1:6465a3f5c58a 614 /*
sunyiming 1:6465a3f5c58a 615 * If there is no more authentication still to be done,
sunyiming 1:6465a3f5c58a 616 * proceed to the network (or callback) phase.
sunyiming 1:6465a3f5c58a 617 */
sunyiming 1:6465a3f5c58a 618 if ((auth_pending[unit] &= ~pbit) == 0) {
sunyiming 1:6465a3f5c58a 619 network_phase(unit);
sunyiming 1:6465a3f5c58a 620 }
sunyiming 1:6465a3f5c58a 621 }
sunyiming 1:6465a3f5c58a 622
sunyiming 1:6465a3f5c58a 623 /*
sunyiming 1:6465a3f5c58a 624 * We have failed to authenticate ourselves to the peer using `protocol'.
sunyiming 1:6465a3f5c58a 625 */
sunyiming 1:6465a3f5c58a 626 void
sunyiming 1:6465a3f5c58a 627 auth_withpeer_fail(int unit, u16_t protocol)
sunyiming 1:6465a3f5c58a 628 {
sunyiming 1:6465a3f5c58a 629 int errCode = PPPERR_AUTHFAIL;
sunyiming 1:6465a3f5c58a 630
sunyiming 1:6465a3f5c58a 631 LWIP_UNUSED_ARG(protocol);
sunyiming 1:6465a3f5c58a 632
sunyiming 1:6465a3f5c58a 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
sunyiming 1:6465a3f5c58a 634 if (passwd_from_file) {
sunyiming 1:6465a3f5c58a 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
sunyiming 1:6465a3f5c58a 636 }
sunyiming 1:6465a3f5c58a 637
sunyiming 1:6465a3f5c58a 638 /*
sunyiming 1:6465a3f5c58a 639 * We've failed to authenticate ourselves to our peer.
sunyiming 1:6465a3f5c58a 640 * He'll probably take the link down, and there's not much
sunyiming 1:6465a3f5c58a 641 * we can do except wait for that.
sunyiming 1:6465a3f5c58a 642 */
sunyiming 1:6465a3f5c58a 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
sunyiming 1:6465a3f5c58a 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
sunyiming 1:6465a3f5c58a 645 }
sunyiming 1:6465a3f5c58a 646
sunyiming 1:6465a3f5c58a 647 /*
sunyiming 1:6465a3f5c58a 648 * We have successfully authenticated ourselves with the peer using `protocol'.
sunyiming 1:6465a3f5c58a 649 */
sunyiming 1:6465a3f5c58a 650 void
sunyiming 1:6465a3f5c58a 651 auth_withpeer_success(int unit, u16_t protocol)
sunyiming 1:6465a3f5c58a 652 {
sunyiming 1:6465a3f5c58a 653 int pbit;
sunyiming 1:6465a3f5c58a 654
sunyiming 1:6465a3f5c58a 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
sunyiming 1:6465a3f5c58a 656 switch (protocol) {
sunyiming 1:6465a3f5c58a 657 case PPP_CHAP:
sunyiming 1:6465a3f5c58a 658 pbit = CHAP_WITHPEER;
sunyiming 1:6465a3f5c58a 659 break;
sunyiming 1:6465a3f5c58a 660 case PPP_PAP:
sunyiming 1:6465a3f5c58a 661 if (passwd_from_file) {
sunyiming 1:6465a3f5c58a 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
sunyiming 1:6465a3f5c58a 663 }
sunyiming 1:6465a3f5c58a 664 pbit = PAP_WITHPEER;
sunyiming 1:6465a3f5c58a 665 break;
sunyiming 1:6465a3f5c58a 666 default:
sunyiming 1:6465a3f5c58a 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
sunyiming 1:6465a3f5c58a 668 pbit = 0;
sunyiming 1:6465a3f5c58a 669 }
sunyiming 1:6465a3f5c58a 670
sunyiming 1:6465a3f5c58a 671 /*
sunyiming 1:6465a3f5c58a 672 * If there is no more authentication still being done,
sunyiming 1:6465a3f5c58a 673 * proceed to the network (or callback) phase.
sunyiming 1:6465a3f5c58a 674 */
sunyiming 1:6465a3f5c58a 675 if ((auth_pending[unit] &= ~pbit) == 0) {
sunyiming 1:6465a3f5c58a 676 network_phase(unit);
sunyiming 1:6465a3f5c58a 677 }
sunyiming 1:6465a3f5c58a 678 }
sunyiming 1:6465a3f5c58a 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 680
sunyiming 1:6465a3f5c58a 681
sunyiming 1:6465a3f5c58a 682 /*
sunyiming 1:6465a3f5c58a 683 * np_up - a network protocol has come up.
sunyiming 1:6465a3f5c58a 684 */
sunyiming 1:6465a3f5c58a 685 void
sunyiming 1:6465a3f5c58a 686 np_up(int unit, u16_t proto)
sunyiming 1:6465a3f5c58a 687 {
sunyiming 1:6465a3f5c58a 688 LWIP_UNUSED_ARG(unit);
sunyiming 1:6465a3f5c58a 689 LWIP_UNUSED_ARG(proto);
sunyiming 1:6465a3f5c58a 690
sunyiming 1:6465a3f5c58a 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
sunyiming 1:6465a3f5c58a 692 if (num_np_up == 0) {
sunyiming 1:6465a3f5c58a 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
sunyiming 1:6465a3f5c58a 694 /*
sunyiming 1:6465a3f5c58a 695 * At this point we consider that the link has come up successfully.
sunyiming 1:6465a3f5c58a 696 */
sunyiming 1:6465a3f5c58a 697 if (ppp_settings.idle_time_limit > 0) {
sunyiming 1:6465a3f5c58a 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
sunyiming 1:6465a3f5c58a 699 }
sunyiming 1:6465a3f5c58a 700
sunyiming 1:6465a3f5c58a 701 /*
sunyiming 1:6465a3f5c58a 702 * Set a timeout to close the connection once the maximum
sunyiming 1:6465a3f5c58a 703 * connect time has expired.
sunyiming 1:6465a3f5c58a 704 */
sunyiming 1:6465a3f5c58a 705 if (ppp_settings.maxconnect > 0) {
sunyiming 1:6465a3f5c58a 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
sunyiming 1:6465a3f5c58a 707 }
sunyiming 1:6465a3f5c58a 708 }
sunyiming 1:6465a3f5c58a 709 ++num_np_up;
sunyiming 1:6465a3f5c58a 710 }
sunyiming 1:6465a3f5c58a 711
sunyiming 1:6465a3f5c58a 712 /*
sunyiming 1:6465a3f5c58a 713 * np_down - a network protocol has gone down.
sunyiming 1:6465a3f5c58a 714 */
sunyiming 1:6465a3f5c58a 715 void
sunyiming 1:6465a3f5c58a 716 np_down(int unit, u16_t proto)
sunyiming 1:6465a3f5c58a 717 {
sunyiming 1:6465a3f5c58a 718 LWIP_UNUSED_ARG(unit);
sunyiming 1:6465a3f5c58a 719 LWIP_UNUSED_ARG(proto);
sunyiming 1:6465a3f5c58a 720
sunyiming 1:6465a3f5c58a 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
sunyiming 1:6465a3f5c58a 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
sunyiming 1:6465a3f5c58a 723 UNTIMEOUT(check_idle, NULL);
sunyiming 1:6465a3f5c58a 724 }
sunyiming 1:6465a3f5c58a 725 }
sunyiming 1:6465a3f5c58a 726
sunyiming 1:6465a3f5c58a 727 /*
sunyiming 1:6465a3f5c58a 728 * np_finished - a network protocol has finished using the link.
sunyiming 1:6465a3f5c58a 729 */
sunyiming 1:6465a3f5c58a 730 void
sunyiming 1:6465a3f5c58a 731 np_finished(int unit, u16_t proto)
sunyiming 1:6465a3f5c58a 732 {
sunyiming 1:6465a3f5c58a 733 LWIP_UNUSED_ARG(unit);
sunyiming 1:6465a3f5c58a 734 LWIP_UNUSED_ARG(proto);
sunyiming 1:6465a3f5c58a 735
sunyiming 1:6465a3f5c58a 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
sunyiming 1:6465a3f5c58a 737 if (--num_np_open <= 0) {
sunyiming 1:6465a3f5c58a 738 /* no further use for the link: shut up shop. */
sunyiming 1:6465a3f5c58a 739 lcp_close(0, "No network protocols running");
sunyiming 1:6465a3f5c58a 740 }
sunyiming 1:6465a3f5c58a 741 }
sunyiming 1:6465a3f5c58a 742
sunyiming 1:6465a3f5c58a 743 /*
sunyiming 1:6465a3f5c58a 744 * check_idle - check whether the link has been idle for long
sunyiming 1:6465a3f5c58a 745 * enough that we can shut it down.
sunyiming 1:6465a3f5c58a 746 */
sunyiming 1:6465a3f5c58a 747 static void
sunyiming 1:6465a3f5c58a 748 check_idle(void *arg)
sunyiming 1:6465a3f5c58a 749 {
sunyiming 1:6465a3f5c58a 750 struct ppp_idle idle;
sunyiming 1:6465a3f5c58a 751 u_short itime;
sunyiming 1:6465a3f5c58a 752
sunyiming 1:6465a3f5c58a 753 LWIP_UNUSED_ARG(arg);
sunyiming 1:6465a3f5c58a 754 if (!get_idle_time(0, &idle)) {
sunyiming 1:6465a3f5c58a 755 return;
sunyiming 1:6465a3f5c58a 756 }
sunyiming 1:6465a3f5c58a 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
sunyiming 1:6465a3f5c58a 758 if (itime >= ppp_settings.idle_time_limit) {
sunyiming 1:6465a3f5c58a 759 /* link is idle: shut it down. */
sunyiming 1:6465a3f5c58a 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
sunyiming 1:6465a3f5c58a 761 lcp_close(0, "Link inactive");
sunyiming 1:6465a3f5c58a 762 } else {
sunyiming 1:6465a3f5c58a 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
sunyiming 1:6465a3f5c58a 764 }
sunyiming 1:6465a3f5c58a 765 }
sunyiming 1:6465a3f5c58a 766
sunyiming 1:6465a3f5c58a 767 /*
sunyiming 1:6465a3f5c58a 768 * connect_time_expired - log a message and close the connection.
sunyiming 1:6465a3f5c58a 769 */
sunyiming 1:6465a3f5c58a 770 static void
sunyiming 1:6465a3f5c58a 771 connect_time_expired(void *arg)
sunyiming 1:6465a3f5c58a 772 {
sunyiming 1:6465a3f5c58a 773 LWIP_UNUSED_ARG(arg);
sunyiming 1:6465a3f5c58a 774
sunyiming 1:6465a3f5c58a 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
sunyiming 1:6465a3f5c58a 776 lcp_close(0, "Connect time expired"); /* Close connection */
sunyiming 1:6465a3f5c58a 777 }
sunyiming 1:6465a3f5c58a 778
sunyiming 1:6465a3f5c58a 779 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 780 /*
sunyiming 1:6465a3f5c58a 781 * auth_check_options - called to check authentication options.
sunyiming 1:6465a3f5c58a 782 */
sunyiming 1:6465a3f5c58a 783 void
sunyiming 1:6465a3f5c58a 784 auth_check_options(void)
sunyiming 1:6465a3f5c58a 785 {
sunyiming 1:6465a3f5c58a 786 lcp_options *wo = &lcp_wantoptions[0];
sunyiming 1:6465a3f5c58a 787 int can_auth;
sunyiming 1:6465a3f5c58a 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
sunyiming 1:6465a3f5c58a 789 u32_t remote;
sunyiming 1:6465a3f5c58a 790
sunyiming 1:6465a3f5c58a 791 /* Default our_name to hostname, and user to our_name */
sunyiming 1:6465a3f5c58a 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
sunyiming 1:6465a3f5c58a 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
sunyiming 1:6465a3f5c58a 794 }
sunyiming 1:6465a3f5c58a 795
sunyiming 1:6465a3f5c58a 796 if (ppp_settings.user[0] == 0) {
sunyiming 1:6465a3f5c58a 797 strcpy(ppp_settings.user, ppp_settings.our_name);
sunyiming 1:6465a3f5c58a 798 }
sunyiming 1:6465a3f5c58a 799
sunyiming 1:6465a3f5c58a 800 /* If authentication is required, ask peer for CHAP or PAP. */
sunyiming 1:6465a3f5c58a 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
sunyiming 1:6465a3f5c58a 802 wo->neg_chap = 1;
sunyiming 1:6465a3f5c58a 803 wo->neg_upap = 1;
sunyiming 1:6465a3f5c58a 804 }
sunyiming 1:6465a3f5c58a 805
sunyiming 1:6465a3f5c58a 806 /*
sunyiming 1:6465a3f5c58a 807 * Check whether we have appropriate secrets to use
sunyiming 1:6465a3f5c58a 808 * to authenticate the peer.
sunyiming 1:6465a3f5c58a 809 */
sunyiming 1:6465a3f5c58a 810 can_auth = wo->neg_upap && have_pap_secret();
sunyiming 1:6465a3f5c58a 811 if (!can_auth && wo->neg_chap) {
sunyiming 1:6465a3f5c58a 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
sunyiming 1:6465a3f5c58a 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
sunyiming 1:6465a3f5c58a 814 }
sunyiming 1:6465a3f5c58a 815
sunyiming 1:6465a3f5c58a 816 if (ppp_settings.auth_required && !can_auth) {
sunyiming 1:6465a3f5c58a 817 ppp_panic("No auth secret");
sunyiming 1:6465a3f5c58a 818 }
sunyiming 1:6465a3f5c58a 819 }
sunyiming 1:6465a3f5c58a 820 #endif /* UNUSED */
sunyiming 1:6465a3f5c58a 821
sunyiming 1:6465a3f5c58a 822 /*
sunyiming 1:6465a3f5c58a 823 * auth_reset - called when LCP is starting negotiations to recheck
sunyiming 1:6465a3f5c58a 824 * authentication options, i.e. whether we have appropriate secrets
sunyiming 1:6465a3f5c58a 825 * to use for authenticating ourselves and/or the peer.
sunyiming 1:6465a3f5c58a 826 */
sunyiming 1:6465a3f5c58a 827 void
sunyiming 1:6465a3f5c58a 828 auth_reset(int unit)
sunyiming 1:6465a3f5c58a 829 {
sunyiming 1:6465a3f5c58a 830 lcp_options *go = &lcp_gotoptions[unit];
sunyiming 1:6465a3f5c58a 831 lcp_options *ao = &lcp_allowoptions[0];
sunyiming 1:6465a3f5c58a 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
sunyiming 1:6465a3f5c58a 833 u32_t remote;
sunyiming 1:6465a3f5c58a 834
sunyiming 1:6465a3f5c58a 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
sunyiming 1:6465a3f5c58a 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
sunyiming 1:6465a3f5c58a 837 ao->neg_chap = !ppp_settings.refuse_chap && ppp_settings.passwd[0] != 0 /*have_chap_secret(ppp_settings.user, ppp_settings.remote_name, (u32_t)0)*/;
sunyiming 1:6465a3f5c58a 838
sunyiming 1:6465a3f5c58a 839 if (go->neg_upap && !have_pap_secret()) {
sunyiming 1:6465a3f5c58a 840 go->neg_upap = 0;
sunyiming 1:6465a3f5c58a 841 }
sunyiming 1:6465a3f5c58a 842 if (go->neg_chap) {
sunyiming 1:6465a3f5c58a 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
sunyiming 1:6465a3f5c58a 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
sunyiming 1:6465a3f5c58a 845 go->neg_chap = 0;
sunyiming 1:6465a3f5c58a 846 }
sunyiming 1:6465a3f5c58a 847 }
sunyiming 1:6465a3f5c58a 848 }
sunyiming 1:6465a3f5c58a 849
sunyiming 1:6465a3f5c58a 850 #if PAP_SUPPORT
sunyiming 1:6465a3f5c58a 851 /*
sunyiming 1:6465a3f5c58a 852 * check_passwd - Check the user name and passwd against the PAP secrets
sunyiming 1:6465a3f5c58a 853 * file. If requested, also check against the system password database,
sunyiming 1:6465a3f5c58a 854 * and login the user if OK.
sunyiming 1:6465a3f5c58a 855 *
sunyiming 1:6465a3f5c58a 856 * returns:
sunyiming 1:6465a3f5c58a 857 * UPAP_AUTHNAK: Authentication failed.
sunyiming 1:6465a3f5c58a 858 * UPAP_AUTHACK: Authentication succeeded.
sunyiming 1:6465a3f5c58a 859 * In either case, msg points to an appropriate message.
sunyiming 1:6465a3f5c58a 860 */
sunyiming 1:6465a3f5c58a 861 u_char
sunyiming 1:6465a3f5c58a 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
sunyiming 1:6465a3f5c58a 863 {
sunyiming 1:6465a3f5c58a 864 #if 1 /* XXX Assume all entries OK. */
sunyiming 1:6465a3f5c58a 865 LWIP_UNUSED_ARG(unit);
sunyiming 1:6465a3f5c58a 866 LWIP_UNUSED_ARG(auser);
sunyiming 1:6465a3f5c58a 867 LWIP_UNUSED_ARG(userlen);
sunyiming 1:6465a3f5c58a 868 LWIP_UNUSED_ARG(apasswd);
sunyiming 1:6465a3f5c58a 869 LWIP_UNUSED_ARG(passwdlen);
sunyiming 1:6465a3f5c58a 870 LWIP_UNUSED_ARG(msglen);
sunyiming 1:6465a3f5c58a 871 *msg = (char *) 0;
sunyiming 1:6465a3f5c58a 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
sunyiming 1:6465a3f5c58a 873 #else
sunyiming 1:6465a3f5c58a 874 u_char ret = 0;
sunyiming 1:6465a3f5c58a 875 struct wordlist *addrs = NULL;
sunyiming 1:6465a3f5c58a 876 char passwd[256], user[256];
sunyiming 1:6465a3f5c58a 877 char secret[MAXWORDLEN];
sunyiming 1:6465a3f5c58a 878 static u_short attempts = 0;
sunyiming 1:6465a3f5c58a 879
sunyiming 1:6465a3f5c58a 880 /*
sunyiming 1:6465a3f5c58a 881 * Make copies of apasswd and auser, then null-terminate them.
sunyiming 1:6465a3f5c58a 882 */
sunyiming 1:6465a3f5c58a 883 BCOPY(apasswd, passwd, passwdlen);
sunyiming 1:6465a3f5c58a 884 passwd[passwdlen] = '\0';
sunyiming 1:6465a3f5c58a 885 BCOPY(auser, user, userlen);
sunyiming 1:6465a3f5c58a 886 user[userlen] = '\0';
sunyiming 1:6465a3f5c58a 887 *msg = (char *) 0;
sunyiming 1:6465a3f5c58a 888
sunyiming 1:6465a3f5c58a 889 /* XXX Validate user name and password. */
sunyiming 1:6465a3f5c58a 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
sunyiming 1:6465a3f5c58a 891
sunyiming 1:6465a3f5c58a 892 if (ret == UPAP_AUTHNAK) {
sunyiming 1:6465a3f5c58a 893 if (*msg == (char *) 0) {
sunyiming 1:6465a3f5c58a 894 *msg = "Login incorrect";
sunyiming 1:6465a3f5c58a 895 }
sunyiming 1:6465a3f5c58a 896 *msglen = strlen(*msg);
sunyiming 1:6465a3f5c58a 897 /*
sunyiming 1:6465a3f5c58a 898 * Frustrate passwd stealer programs.
sunyiming 1:6465a3f5c58a 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
sunyiming 1:6465a3f5c58a 900 * On 10'th, drop the connection.
sunyiming 1:6465a3f5c58a 901 */
sunyiming 1:6465a3f5c58a 902 if (attempts++ >= 10) {
sunyiming 1:6465a3f5c58a 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
sunyiming 1:6465a3f5c58a 904 /*ppp_panic("Excess Bad Logins");*/
sunyiming 1:6465a3f5c58a 905 }
sunyiming 1:6465a3f5c58a 906 if (attempts > 3) {
sunyiming 1:6465a3f5c58a 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
sunyiming 1:6465a3f5c58a 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
sunyiming 1:6465a3f5c58a 909 */
sunyiming 1:6465a3f5c58a 910 /*sys_msleep((attempts - 3) * 5);*/
sunyiming 1:6465a3f5c58a 911 }
sunyiming 1:6465a3f5c58a 912 if (addrs != NULL) {
sunyiming 1:6465a3f5c58a 913 free_wordlist(addrs);
sunyiming 1:6465a3f5c58a 914 }
sunyiming 1:6465a3f5c58a 915 } else {
sunyiming 1:6465a3f5c58a 916 attempts = 0; /* Reset count */
sunyiming 1:6465a3f5c58a 917 if (*msg == (char *) 0) {
sunyiming 1:6465a3f5c58a 918 *msg = "Login ok";
sunyiming 1:6465a3f5c58a 919 }
sunyiming 1:6465a3f5c58a 920 *msglen = strlen(*msg);
sunyiming 1:6465a3f5c58a 921 set_allowed_addrs(unit, addrs);
sunyiming 1:6465a3f5c58a 922 }
sunyiming 1:6465a3f5c58a 923
sunyiming 1:6465a3f5c58a 924 BZERO(passwd, sizeof(passwd));
sunyiming 1:6465a3f5c58a 925 BZERO(secret, sizeof(secret));
sunyiming 1:6465a3f5c58a 926
sunyiming 1:6465a3f5c58a 927 return ret;
sunyiming 1:6465a3f5c58a 928 #endif
sunyiming 1:6465a3f5c58a 929 }
sunyiming 1:6465a3f5c58a 930 #endif /* PAP_SUPPORT */
sunyiming 1:6465a3f5c58a 931
sunyiming 1:6465a3f5c58a 932 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 933 /*
sunyiming 1:6465a3f5c58a 934 * This function is needed for PAM.
sunyiming 1:6465a3f5c58a 935 */
sunyiming 1:6465a3f5c58a 936
sunyiming 1:6465a3f5c58a 937 #ifdef USE_PAM
sunyiming 1:6465a3f5c58a 938
sunyiming 1:6465a3f5c58a 939 /* lwip does not support PAM*/
sunyiming 1:6465a3f5c58a 940
sunyiming 1:6465a3f5c58a 941 #endif /* USE_PAM */
sunyiming 1:6465a3f5c58a 942
sunyiming 1:6465a3f5c58a 943 #endif /* UNUSED */
sunyiming 1:6465a3f5c58a 944
sunyiming 1:6465a3f5c58a 945
sunyiming 1:6465a3f5c58a 946 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 947 /*
sunyiming 1:6465a3f5c58a 948 * plogin - Check the user name and password against the system
sunyiming 1:6465a3f5c58a 949 * password database, and login the user if OK.
sunyiming 1:6465a3f5c58a 950 *
sunyiming 1:6465a3f5c58a 951 * returns:
sunyiming 1:6465a3f5c58a 952 * UPAP_AUTHNAK: Login failed.
sunyiming 1:6465a3f5c58a 953 * UPAP_AUTHACK: Login succeeded.
sunyiming 1:6465a3f5c58a 954 * In either case, msg points to an appropriate message.
sunyiming 1:6465a3f5c58a 955 */
sunyiming 1:6465a3f5c58a 956 static int
sunyiming 1:6465a3f5c58a 957 plogin(char *user, char *passwd, char **msg, int *msglen)
sunyiming 1:6465a3f5c58a 958 {
sunyiming 1:6465a3f5c58a 959
sunyiming 1:6465a3f5c58a 960 LWIP_UNUSED_ARG(user);
sunyiming 1:6465a3f5c58a 961 LWIP_UNUSED_ARG(passwd);
sunyiming 1:6465a3f5c58a 962 LWIP_UNUSED_ARG(msg);
sunyiming 1:6465a3f5c58a 963 LWIP_UNUSED_ARG(msglen);
sunyiming 1:6465a3f5c58a 964
sunyiming 1:6465a3f5c58a 965
sunyiming 1:6465a3f5c58a 966 /* The new lines are here align the file when
sunyiming 1:6465a3f5c58a 967 * compared against the pppd 2.3.11 code */
sunyiming 1:6465a3f5c58a 968
sunyiming 1:6465a3f5c58a 969
sunyiming 1:6465a3f5c58a 970
sunyiming 1:6465a3f5c58a 971
sunyiming 1:6465a3f5c58a 972
sunyiming 1:6465a3f5c58a 973
sunyiming 1:6465a3f5c58a 974
sunyiming 1:6465a3f5c58a 975
sunyiming 1:6465a3f5c58a 976
sunyiming 1:6465a3f5c58a 977
sunyiming 1:6465a3f5c58a 978
sunyiming 1:6465a3f5c58a 979
sunyiming 1:6465a3f5c58a 980
sunyiming 1:6465a3f5c58a 981
sunyiming 1:6465a3f5c58a 982
sunyiming 1:6465a3f5c58a 983
sunyiming 1:6465a3f5c58a 984 /* XXX Fail until we decide that we want to support logins. */
sunyiming 1:6465a3f5c58a 985 return (UPAP_AUTHNAK);
sunyiming 1:6465a3f5c58a 986 }
sunyiming 1:6465a3f5c58a 987 #endif
sunyiming 1:6465a3f5c58a 988
sunyiming 1:6465a3f5c58a 989
sunyiming 1:6465a3f5c58a 990
sunyiming 1:6465a3f5c58a 991 /*
sunyiming 1:6465a3f5c58a 992 * plogout - Logout the user.
sunyiming 1:6465a3f5c58a 993 */
sunyiming 1:6465a3f5c58a 994 static void
sunyiming 1:6465a3f5c58a 995 plogout(void)
sunyiming 1:6465a3f5c58a 996 {
sunyiming 1:6465a3f5c58a 997 logged_in = 0;
sunyiming 1:6465a3f5c58a 998 }
sunyiming 1:6465a3f5c58a 999
sunyiming 1:6465a3f5c58a 1000 /*
sunyiming 1:6465a3f5c58a 1001 * null_login - Check if a username of "" and a password of "" are
sunyiming 1:6465a3f5c58a 1002 * acceptable, and iff so, set the list of acceptable IP addresses
sunyiming 1:6465a3f5c58a 1003 * and return 1.
sunyiming 1:6465a3f5c58a 1004 */
sunyiming 1:6465a3f5c58a 1005 static int
sunyiming 1:6465a3f5c58a 1006 null_login(int unit)
sunyiming 1:6465a3f5c58a 1007 {
sunyiming 1:6465a3f5c58a 1008 LWIP_UNUSED_ARG(unit);
sunyiming 1:6465a3f5c58a 1009 /* XXX Fail until we decide that we want to support logins. */
sunyiming 1:6465a3f5c58a 1010 return 0;
sunyiming 1:6465a3f5c58a 1011 }
sunyiming 1:6465a3f5c58a 1012
sunyiming 1:6465a3f5c58a 1013
sunyiming 1:6465a3f5c58a 1014 /*
sunyiming 1:6465a3f5c58a 1015 * get_pap_passwd - get a password for authenticating ourselves with
sunyiming 1:6465a3f5c58a 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
sunyiming 1:6465a3f5c58a 1017 * could be found.
sunyiming 1:6465a3f5c58a 1018 */
sunyiming 1:6465a3f5c58a 1019 static int
sunyiming 1:6465a3f5c58a 1020 get_pap_passwd(int unit, char *user, char *passwd)
sunyiming 1:6465a3f5c58a 1021 {
sunyiming 1:6465a3f5c58a 1022 LWIP_UNUSED_ARG(unit);
sunyiming 1:6465a3f5c58a 1023 /* normally we would reject PAP if no password is provided,
sunyiming 1:6465a3f5c58a 1024 but this causes problems with some providers (like CHT in Taiwan)
sunyiming 1:6465a3f5c58a 1025 who incorrectly request PAP and expect a bogus/empty password, so
sunyiming 1:6465a3f5c58a 1026 always provide a default user/passwd of "none"/"none"
sunyiming 1:6465a3f5c58a 1027
sunyiming 1:6465a3f5c58a 1028 @todo: This should be configured by the user, instead of being hardcoded here!
sunyiming 1:6465a3f5c58a 1029 */
sunyiming 1:6465a3f5c58a 1030 if(user) {
sunyiming 1:6465a3f5c58a 1031 strcpy(user, "none");
sunyiming 1:6465a3f5c58a 1032 }
sunyiming 1:6465a3f5c58a 1033 if(passwd) {
sunyiming 1:6465a3f5c58a 1034 strcpy(passwd, "none");
sunyiming 1:6465a3f5c58a 1035 }
sunyiming 1:6465a3f5c58a 1036 return 1;
sunyiming 1:6465a3f5c58a 1037 }
sunyiming 1:6465a3f5c58a 1038
sunyiming 1:6465a3f5c58a 1039 /*
sunyiming 1:6465a3f5c58a 1040 * have_pap_secret - check whether we have a PAP file with any
sunyiming 1:6465a3f5c58a 1041 * secrets that we could possibly use for authenticating the peer.
sunyiming 1:6465a3f5c58a 1042 */
sunyiming 1:6465a3f5c58a 1043 static int
sunyiming 1:6465a3f5c58a 1044 have_pap_secret(void)
sunyiming 1:6465a3f5c58a 1045 {
sunyiming 1:6465a3f5c58a 1046 /* XXX Fail until we set up our passwords. */
sunyiming 1:6465a3f5c58a 1047 return 0;
sunyiming 1:6465a3f5c58a 1048 }
sunyiming 1:6465a3f5c58a 1049
sunyiming 1:6465a3f5c58a 1050 /*
sunyiming 1:6465a3f5c58a 1051 * have_chap_secret - check whether we have a CHAP file with a
sunyiming 1:6465a3f5c58a 1052 * secret that we could possibly use for authenticating `client'
sunyiming 1:6465a3f5c58a 1053 * on `server'. Either can be the null string, meaning we don't
sunyiming 1:6465a3f5c58a 1054 * know the identity yet.
sunyiming 1:6465a3f5c58a 1055 */
sunyiming 1:6465a3f5c58a 1056 static int
sunyiming 1:6465a3f5c58a 1057 have_chap_secret(char *client, char *server, u32_t remote)
sunyiming 1:6465a3f5c58a 1058 {
sunyiming 1:6465a3f5c58a 1059 LWIP_UNUSED_ARG(client);
sunyiming 1:6465a3f5c58a 1060 LWIP_UNUSED_ARG(server);
sunyiming 1:6465a3f5c58a 1061 LWIP_UNUSED_ARG(remote);
sunyiming 1:6465a3f5c58a 1062
sunyiming 1:6465a3f5c58a 1063 /* XXX Fail until we set up our passwords. */
sunyiming 1:6465a3f5c58a 1064 return 0;
sunyiming 1:6465a3f5c58a 1065 }
sunyiming 1:6465a3f5c58a 1066 #if CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 1067
sunyiming 1:6465a3f5c58a 1068 /*
sunyiming 1:6465a3f5c58a 1069 * get_secret - open the CHAP secret file and return the secret
sunyiming 1:6465a3f5c58a 1070 * for authenticating the given client on the given server.
sunyiming 1:6465a3f5c58a 1071 * (We could be either client or server).
sunyiming 1:6465a3f5c58a 1072 */
sunyiming 1:6465a3f5c58a 1073 int
sunyiming 1:6465a3f5c58a 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
sunyiming 1:6465a3f5c58a 1075 {
sunyiming 1:6465a3f5c58a 1076 #if 1
sunyiming 1:6465a3f5c58a 1077 int len;
sunyiming 1:6465a3f5c58a 1078 struct wordlist *addrs;
sunyiming 1:6465a3f5c58a 1079
sunyiming 1:6465a3f5c58a 1080 LWIP_UNUSED_ARG(unit);
sunyiming 1:6465a3f5c58a 1081 LWIP_UNUSED_ARG(server);
sunyiming 1:6465a3f5c58a 1082 LWIP_UNUSED_ARG(save_addrs);
sunyiming 1:6465a3f5c58a 1083
sunyiming 1:6465a3f5c58a 1084 addrs = NULL;
sunyiming 1:6465a3f5c58a 1085
sunyiming 1:6465a3f5c58a 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
sunyiming 1:6465a3f5c58a 1087 return 0;
sunyiming 1:6465a3f5c58a 1088 }
sunyiming 1:6465a3f5c58a 1089
sunyiming 1:6465a3f5c58a 1090 len = (int)strlen(ppp_settings.passwd);
sunyiming 1:6465a3f5c58a 1091 if (len > MAXSECRETLEN) {
sunyiming 1:6465a3f5c58a 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
sunyiming 1:6465a3f5c58a 1093 len = MAXSECRETLEN;
sunyiming 1:6465a3f5c58a 1094 }
sunyiming 1:6465a3f5c58a 1095
sunyiming 1:6465a3f5c58a 1096 BCOPY(ppp_settings.passwd, secret, len);
sunyiming 1:6465a3f5c58a 1097 *secret_len = len;
sunyiming 1:6465a3f5c58a 1098
sunyiming 1:6465a3f5c58a 1099 return 1;
sunyiming 1:6465a3f5c58a 1100 #else
sunyiming 1:6465a3f5c58a 1101 int ret = 0, len;
sunyiming 1:6465a3f5c58a 1102 struct wordlist *addrs;
sunyiming 1:6465a3f5c58a 1103 char secbuf[MAXWORDLEN];
sunyiming 1:6465a3f5c58a 1104
sunyiming 1:6465a3f5c58a 1105 addrs = NULL;
sunyiming 1:6465a3f5c58a 1106 secbuf[0] = 0;
sunyiming 1:6465a3f5c58a 1107
sunyiming 1:6465a3f5c58a 1108 /* XXX Find secret. */
sunyiming 1:6465a3f5c58a 1109 if (ret < 0) {
sunyiming 1:6465a3f5c58a 1110 return 0;
sunyiming 1:6465a3f5c58a 1111 }
sunyiming 1:6465a3f5c58a 1112
sunyiming 1:6465a3f5c58a 1113 if (save_addrs) {
sunyiming 1:6465a3f5c58a 1114 set_allowed_addrs(unit, addrs);
sunyiming 1:6465a3f5c58a 1115 }
sunyiming 1:6465a3f5c58a 1116
sunyiming 1:6465a3f5c58a 1117 len = strlen(secbuf);
sunyiming 1:6465a3f5c58a 1118 if (len > MAXSECRETLEN) {
sunyiming 1:6465a3f5c58a 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
sunyiming 1:6465a3f5c58a 1120 len = MAXSECRETLEN;
sunyiming 1:6465a3f5c58a 1121 }
sunyiming 1:6465a3f5c58a 1122
sunyiming 1:6465a3f5c58a 1123 BCOPY(secbuf, secret, len);
sunyiming 1:6465a3f5c58a 1124 BZERO(secbuf, sizeof(secbuf));
sunyiming 1:6465a3f5c58a 1125 *secret_len = len;
sunyiming 1:6465a3f5c58a 1126
sunyiming 1:6465a3f5c58a 1127 return 1;
sunyiming 1:6465a3f5c58a 1128 #endif
sunyiming 1:6465a3f5c58a 1129 }
sunyiming 1:6465a3f5c58a 1130 #endif /* CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 1131
sunyiming 1:6465a3f5c58a 1132
sunyiming 1:6465a3f5c58a 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 1134 /*
sunyiming 1:6465a3f5c58a 1135 * set_allowed_addrs() - set the list of allowed addresses.
sunyiming 1:6465a3f5c58a 1136 */
sunyiming 1:6465a3f5c58a 1137 static void
sunyiming 1:6465a3f5c58a 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
sunyiming 1:6465a3f5c58a 1139 {
sunyiming 1:6465a3f5c58a 1140 if (addresses[unit] != NULL) {
sunyiming 1:6465a3f5c58a 1141 free_wordlist(addresses[unit]);
sunyiming 1:6465a3f5c58a 1142 }
sunyiming 1:6465a3f5c58a 1143 addresses[unit] = addrs;
sunyiming 1:6465a3f5c58a 1144
sunyiming 1:6465a3f5c58a 1145 #if 0
sunyiming 1:6465a3f5c58a 1146 /*
sunyiming 1:6465a3f5c58a 1147 * If there's only one authorized address we might as well
sunyiming 1:6465a3f5c58a 1148 * ask our peer for that one right away
sunyiming 1:6465a3f5c58a 1149 */
sunyiming 1:6465a3f5c58a 1150 if (addrs != NULL && addrs->next == NULL) {
sunyiming 1:6465a3f5c58a 1151 char *p = addrs->word;
sunyiming 1:6465a3f5c58a 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
sunyiming 1:6465a3f5c58a 1153 u32_t a;
sunyiming 1:6465a3f5c58a 1154 struct hostent *hp;
sunyiming 1:6465a3f5c58a 1155
sunyiming 1:6465a3f5c58a 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
sunyiming 1:6465a3f5c58a 1157 hp = gethostbyname(p);
sunyiming 1:6465a3f5c58a 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
sunyiming 1:6465a3f5c58a 1159 a = *(u32_t *)hp->h_addr;
sunyiming 1:6465a3f5c58a 1160 } else {
sunyiming 1:6465a3f5c58a 1161 a = inet_addr(p);
sunyiming 1:6465a3f5c58a 1162 }
sunyiming 1:6465a3f5c58a 1163 if (a != (u32_t) -1) {
sunyiming 1:6465a3f5c58a 1164 wo->hisaddr = a;
sunyiming 1:6465a3f5c58a 1165 }
sunyiming 1:6465a3f5c58a 1166 }
sunyiming 1:6465a3f5c58a 1167 }
sunyiming 1:6465a3f5c58a 1168 #endif
sunyiming 1:6465a3f5c58a 1169 }
sunyiming 1:6465a3f5c58a 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 1171
sunyiming 1:6465a3f5c58a 1172 /*
sunyiming 1:6465a3f5c58a 1173 * auth_ip_addr - check whether the peer is authorized to use
sunyiming 1:6465a3f5c58a 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
sunyiming 1:6465a3f5c58a 1175 */
sunyiming 1:6465a3f5c58a 1176 int
sunyiming 1:6465a3f5c58a 1177 auth_ip_addr(int unit, u32_t addr)
sunyiming 1:6465a3f5c58a 1178 {
sunyiming 1:6465a3f5c58a 1179 return ip_addr_check(addr, addresses[unit]);
sunyiming 1:6465a3f5c58a 1180 }
sunyiming 1:6465a3f5c58a 1181
sunyiming 1:6465a3f5c58a 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
sunyiming 1:6465a3f5c58a 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
sunyiming 1:6465a3f5c58a 1184 {
sunyiming 1:6465a3f5c58a 1185 /* don't allow loopback or multicast address */
sunyiming 1:6465a3f5c58a 1186 if (bad_ip_adrs(addr)) {
sunyiming 1:6465a3f5c58a 1187 return 0;
sunyiming 1:6465a3f5c58a 1188 }
sunyiming 1:6465a3f5c58a 1189
sunyiming 1:6465a3f5c58a 1190 if (addrs == NULL) {
sunyiming 1:6465a3f5c58a 1191 return !ppp_settings.auth_required; /* no addresses authorized */
sunyiming 1:6465a3f5c58a 1192 }
sunyiming 1:6465a3f5c58a 1193
sunyiming 1:6465a3f5c58a 1194 /* XXX All other addresses allowed. */
sunyiming 1:6465a3f5c58a 1195 return 1;
sunyiming 1:6465a3f5c58a 1196 }
sunyiming 1:6465a3f5c58a 1197
sunyiming 1:6465a3f5c58a 1198 /*
sunyiming 1:6465a3f5c58a 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
sunyiming 1:6465a3f5c58a 1200 * to use, such as an address in the loopback net or a multicast address.
sunyiming 1:6465a3f5c58a 1201 * addr is in network byte order.
sunyiming 1:6465a3f5c58a 1202 */
sunyiming 1:6465a3f5c58a 1203 int
sunyiming 1:6465a3f5c58a 1204 bad_ip_adrs(u32_t addr)
sunyiming 1:6465a3f5c58a 1205 {
sunyiming 1:6465a3f5c58a 1206 addr = ntohl(addr);
sunyiming 1:6465a3f5c58a 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
sunyiming 1:6465a3f5c58a 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
sunyiming 1:6465a3f5c58a 1209 }
sunyiming 1:6465a3f5c58a 1210
sunyiming 1:6465a3f5c58a 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 1212 /*
sunyiming 1:6465a3f5c58a 1213 * some_ip_ok - check a wordlist to see if it authorizes any
sunyiming 1:6465a3f5c58a 1214 * IP address(es).
sunyiming 1:6465a3f5c58a 1215 */
sunyiming 1:6465a3f5c58a 1216 static int
sunyiming 1:6465a3f5c58a 1217 some_ip_ok(struct wordlist *addrs)
sunyiming 1:6465a3f5c58a 1218 {
sunyiming 1:6465a3f5c58a 1219 for (; addrs != 0; addrs = addrs->next) {
sunyiming 1:6465a3f5c58a 1220 if (addrs->word[0] == '-')
sunyiming 1:6465a3f5c58a 1221 break;
sunyiming 1:6465a3f5c58a 1222 if (addrs->word[0] != '!')
sunyiming 1:6465a3f5c58a 1223 return 1; /* some IP address is allowed */
sunyiming 1:6465a3f5c58a 1224 }
sunyiming 1:6465a3f5c58a 1225 return 0;
sunyiming 1:6465a3f5c58a 1226 }
sunyiming 1:6465a3f5c58a 1227
sunyiming 1:6465a3f5c58a 1228 /*
sunyiming 1:6465a3f5c58a 1229 * check_access - complain if a secret file has too-liberal permissions.
sunyiming 1:6465a3f5c58a 1230 */
sunyiming 1:6465a3f5c58a 1231 static void
sunyiming 1:6465a3f5c58a 1232 check_access(FILE *f, char *filename)
sunyiming 1:6465a3f5c58a 1233 {
sunyiming 1:6465a3f5c58a 1234 struct stat sbuf;
sunyiming 1:6465a3f5c58a 1235
sunyiming 1:6465a3f5c58a 1236 if (fstat(fileno(f), &sbuf) < 0) {
sunyiming 1:6465a3f5c58a 1237 warn("cannot stat secret file %s: %m", filename);
sunyiming 1:6465a3f5c58a 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
sunyiming 1:6465a3f5c58a 1239 warn("Warning - secret file %s has world and/or group access",
sunyiming 1:6465a3f5c58a 1240 filename);
sunyiming 1:6465a3f5c58a 1241 }
sunyiming 1:6465a3f5c58a 1242 }
sunyiming 1:6465a3f5c58a 1243
sunyiming 1:6465a3f5c58a 1244
sunyiming 1:6465a3f5c58a 1245 /*
sunyiming 1:6465a3f5c58a 1246 * scan_authfile - Scan an authorization file for a secret suitable
sunyiming 1:6465a3f5c58a 1247 * for authenticating `client' on `server'. The return value is -1
sunyiming 1:6465a3f5c58a 1248 * if no secret is found, otherwise >= 0. The return value has
sunyiming 1:6465a3f5c58a 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
sunyiming 1:6465a3f5c58a 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
sunyiming 1:6465a3f5c58a 1251 * Any following words on the line up to a "--" (i.e. address authorization
sunyiming 1:6465a3f5c58a 1252 * info) are placed in a wordlist and returned in *addrs. Any
sunyiming 1:6465a3f5c58a 1253 * following words (extra options) are placed in a wordlist and
sunyiming 1:6465a3f5c58a 1254 * returned in *opts.
sunyiming 1:6465a3f5c58a 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
sunyiming 1:6465a3f5c58a 1256 */
sunyiming 1:6465a3f5c58a 1257 static int
sunyiming 1:6465a3f5c58a 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
sunyiming 1:6465a3f5c58a 1259 {
sunyiming 1:6465a3f5c58a 1260 /* We do not (currently) need this in lwip */
sunyiming 1:6465a3f5c58a 1261 return 0; /* dummy */
sunyiming 1:6465a3f5c58a 1262 }
sunyiming 1:6465a3f5c58a 1263 /*
sunyiming 1:6465a3f5c58a 1264 * free_wordlist - release memory allocated for a wordlist.
sunyiming 1:6465a3f5c58a 1265 */
sunyiming 1:6465a3f5c58a 1266 static void
sunyiming 1:6465a3f5c58a 1267 free_wordlist(struct wordlist *wp)
sunyiming 1:6465a3f5c58a 1268 {
sunyiming 1:6465a3f5c58a 1269 struct wordlist *next;
sunyiming 1:6465a3f5c58a 1270
sunyiming 1:6465a3f5c58a 1271 while (wp != NULL) {
sunyiming 1:6465a3f5c58a 1272 next = wp->next;
sunyiming 1:6465a3f5c58a 1273 free(wp);
sunyiming 1:6465a3f5c58a 1274 wp = next;
sunyiming 1:6465a3f5c58a 1275 }
sunyiming 1:6465a3f5c58a 1276 }
sunyiming 1:6465a3f5c58a 1277
sunyiming 1:6465a3f5c58a 1278 /*
sunyiming 1:6465a3f5c58a 1279 * auth_script_done - called when the auth-up or auth-down script
sunyiming 1:6465a3f5c58a 1280 * has finished.
sunyiming 1:6465a3f5c58a 1281 */
sunyiming 1:6465a3f5c58a 1282 static void
sunyiming 1:6465a3f5c58a 1283 auth_script_done(void *arg)
sunyiming 1:6465a3f5c58a 1284 {
sunyiming 1:6465a3f5c58a 1285 auth_script_pid = 0;
sunyiming 1:6465a3f5c58a 1286 switch (auth_script_state) {
sunyiming 1:6465a3f5c58a 1287 case s_up:
sunyiming 1:6465a3f5c58a 1288 if (auth_state == s_down) {
sunyiming 1:6465a3f5c58a 1289 auth_script_state = s_down;
sunyiming 1:6465a3f5c58a 1290 auth_script(_PATH_AUTHDOWN);
sunyiming 1:6465a3f5c58a 1291 }
sunyiming 1:6465a3f5c58a 1292 break;
sunyiming 1:6465a3f5c58a 1293 case s_down:
sunyiming 1:6465a3f5c58a 1294 if (auth_state == s_up) {
sunyiming 1:6465a3f5c58a 1295 auth_script_state = s_up;
sunyiming 1:6465a3f5c58a 1296 auth_script(_PATH_AUTHUP);
sunyiming 1:6465a3f5c58a 1297 }
sunyiming 1:6465a3f5c58a 1298 break;
sunyiming 1:6465a3f5c58a 1299 }
sunyiming 1:6465a3f5c58a 1300 }
sunyiming 1:6465a3f5c58a 1301
sunyiming 1:6465a3f5c58a 1302 /*
sunyiming 1:6465a3f5c58a 1303 * auth_script - execute a script with arguments
sunyiming 1:6465a3f5c58a 1304 * interface-name peer-name real-user tty speed
sunyiming 1:6465a3f5c58a 1305 */
sunyiming 1:6465a3f5c58a 1306 static void
sunyiming 1:6465a3f5c58a 1307 auth_script(char *script)
sunyiming 1:6465a3f5c58a 1308 {
sunyiming 1:6465a3f5c58a 1309 char strspeed[32];
sunyiming 1:6465a3f5c58a 1310 struct passwd *pw;
sunyiming 1:6465a3f5c58a 1311 char struid[32];
sunyiming 1:6465a3f5c58a 1312 char *user_name;
sunyiming 1:6465a3f5c58a 1313 char *argv[8];
sunyiming 1:6465a3f5c58a 1314
sunyiming 1:6465a3f5c58a 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
sunyiming 1:6465a3f5c58a 1316 user_name = pw->pw_name;
sunyiming 1:6465a3f5c58a 1317 else {
sunyiming 1:6465a3f5c58a 1318 slprintf(struid, sizeof(struid), "%d", getuid());
sunyiming 1:6465a3f5c58a 1319 user_name = struid;
sunyiming 1:6465a3f5c58a 1320 }
sunyiming 1:6465a3f5c58a 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
sunyiming 1:6465a3f5c58a 1322
sunyiming 1:6465a3f5c58a 1323 argv[0] = script;
sunyiming 1:6465a3f5c58a 1324 argv[1] = ifname;
sunyiming 1:6465a3f5c58a 1325 argv[2] = peer_authname;
sunyiming 1:6465a3f5c58a 1326 argv[3] = user_name;
sunyiming 1:6465a3f5c58a 1327 argv[4] = devnam;
sunyiming 1:6465a3f5c58a 1328 argv[5] = strspeed;
sunyiming 1:6465a3f5c58a 1329 argv[6] = NULL;
sunyiming 1:6465a3f5c58a 1330
sunyiming 1:6465a3f5c58a 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
sunyiming 1:6465a3f5c58a 1332 }
sunyiming 1:6465a3f5c58a 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 1334 #endif /* PPP_SUPPORT */