Nino Der Kinderen / Mbed 2 deprecated InetTest

Embedded C project:18/12/2014

Dependencies:   DS1307 TextLCD mbed

NetServices/lwip/netif/ppp/auth.c@0:8d87bc453349, 2014-12-18 (annotated)

Committer:
ninoderkinderen
Date:
Thu Dec 18 09:35:49 2014 +0000
Revision:
0:8d87bc453349
Programma embedded C

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ninoderkinderen 0:8d87bc453349 1 /*****************************************************************************
ninoderkinderen 0:8d87bc453349 2 * auth.c - Network Authentication and Phase Control program file.
ninoderkinderen 0:8d87bc453349 3 *
ninoderkinderen 0:8d87bc453349 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
ninoderkinderen 0:8d87bc453349 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
ninoderkinderen 0:8d87bc453349 6 *
ninoderkinderen 0:8d87bc453349 7 * The authors hereby grant permission to use, copy, modify, distribute,
ninoderkinderen 0:8d87bc453349 8 * and license this software and its documentation for any purpose, provided
ninoderkinderen 0:8d87bc453349 9 * that existing copyright notices are retained in all copies and that this
ninoderkinderen 0:8d87bc453349 10 * notice and the following disclaimer are included verbatim in any
ninoderkinderen 0:8d87bc453349 11 * distributions. No written agreement, license, or royalty fee is required
ninoderkinderen 0:8d87bc453349 12 * for any of the authorized uses.
ninoderkinderen 0:8d87bc453349 13 *
ninoderkinderen 0:8d87bc453349 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
ninoderkinderen 0:8d87bc453349 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ninoderkinderen 0:8d87bc453349 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
ninoderkinderen 0:8d87bc453349 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
ninoderkinderen 0:8d87bc453349 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
ninoderkinderen 0:8d87bc453349 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
ninoderkinderen 0:8d87bc453349 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
ninoderkinderen 0:8d87bc453349 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
ninoderkinderen 0:8d87bc453349 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
ninoderkinderen 0:8d87bc453349 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ninoderkinderen 0:8d87bc453349 24 *
ninoderkinderen 0:8d87bc453349 25 ******************************************************************************
ninoderkinderen 0:8d87bc453349 26 * REVISION HISTORY
ninoderkinderen 0:8d87bc453349 27 *
ninoderkinderen 0:8d87bc453349 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
ninoderkinderen 0:8d87bc453349 29 * Ported to lwIP.
ninoderkinderen 0:8d87bc453349 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
ninoderkinderen 0:8d87bc453349 31 * Ported from public pppd code.
ninoderkinderen 0:8d87bc453349 32 *****************************************************************************/
ninoderkinderen 0:8d87bc453349 33 /*
ninoderkinderen 0:8d87bc453349 34 * auth.c - PPP authentication and phase control.
ninoderkinderen 0:8d87bc453349 35 *
ninoderkinderen 0:8d87bc453349 36 * Copyright (c) 1993 The Australian National University.
ninoderkinderen 0:8d87bc453349 37 * All rights reserved.
ninoderkinderen 0:8d87bc453349 38 *
ninoderkinderen 0:8d87bc453349 39 * Redistribution and use in source and binary forms are permitted
ninoderkinderen 0:8d87bc453349 40 * provided that the above copyright notice and this paragraph are
ninoderkinderen 0:8d87bc453349 41 * duplicated in all such forms and that any documentation,
ninoderkinderen 0:8d87bc453349 42 * advertising materials, and other materials related to such
ninoderkinderen 0:8d87bc453349 43 * distribution and use acknowledge that the software was developed
ninoderkinderen 0:8d87bc453349 44 * by the Australian National University. The name of the University
ninoderkinderen 0:8d87bc453349 45 * may not be used to endorse or promote products derived from this
ninoderkinderen 0:8d87bc453349 46 * software without specific prior written permission.
ninoderkinderen 0:8d87bc453349 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
ninoderkinderen 0:8d87bc453349 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
ninoderkinderen 0:8d87bc453349 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
ninoderkinderen 0:8d87bc453349 50 *
ninoderkinderen 0:8d87bc453349 51 * Copyright (c) 1989 Carnegie Mellon University.
ninoderkinderen 0:8d87bc453349 52 * All rights reserved.
ninoderkinderen 0:8d87bc453349 53 *
ninoderkinderen 0:8d87bc453349 54 * Redistribution and use in source and binary forms are permitted
ninoderkinderen 0:8d87bc453349 55 * provided that the above copyright notice and this paragraph are
ninoderkinderen 0:8d87bc453349 56 * duplicated in all such forms and that any documentation,
ninoderkinderen 0:8d87bc453349 57 * advertising materials, and other materials related to such
ninoderkinderen 0:8d87bc453349 58 * distribution and use acknowledge that the software was developed
ninoderkinderen 0:8d87bc453349 59 * by Carnegie Mellon University. The name of the
ninoderkinderen 0:8d87bc453349 60 * University may not be used to endorse or promote products derived
ninoderkinderen 0:8d87bc453349 61 * from this software without specific prior written permission.
ninoderkinderen 0:8d87bc453349 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
ninoderkinderen 0:8d87bc453349 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
ninoderkinderen 0:8d87bc453349 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
ninoderkinderen 0:8d87bc453349 65 */
ninoderkinderen 0:8d87bc453349 66
ninoderkinderen 0:8d87bc453349 67 #include "lwip/opt.h"
ninoderkinderen 0:8d87bc453349 68
ninoderkinderen 0:8d87bc453349 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
ninoderkinderen 0:8d87bc453349 70
ninoderkinderen 0:8d87bc453349 71 #include "ppp.h"
ninoderkinderen 0:8d87bc453349 72 #include "pppdebug.h"
ninoderkinderen 0:8d87bc453349 73
ninoderkinderen 0:8d87bc453349 74 #include "fsm.h"
ninoderkinderen 0:8d87bc453349 75 #include "lcp.h"
ninoderkinderen 0:8d87bc453349 76 #include "pap.h"
ninoderkinderen 0:8d87bc453349 77 #include "chap.h"
ninoderkinderen 0:8d87bc453349 78 #include "auth.h"
ninoderkinderen 0:8d87bc453349 79 #include "ipcp.h"
ninoderkinderen 0:8d87bc453349 80
ninoderkinderen 0:8d87bc453349 81 #if CBCP_SUPPORT
ninoderkinderen 0:8d87bc453349 82 #include "cbcp.h"
ninoderkinderen 0:8d87bc453349 83 #endif /* CBCP_SUPPORT */
ninoderkinderen 0:8d87bc453349 84
ninoderkinderen 0:8d87bc453349 85 #include "lwip/inet.h"
ninoderkinderen 0:8d87bc453349 86
ninoderkinderen 0:8d87bc453349 87 #include <string.h>
ninoderkinderen 0:8d87bc453349 88
ninoderkinderen 0:8d87bc453349 89 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 90 /* Bits in scan_authfile return value */
ninoderkinderen 0:8d87bc453349 91 #define NONWILD_SERVER 1
ninoderkinderen 0:8d87bc453349 92 #define NONWILD_CLIENT 2
ninoderkinderen 0:8d87bc453349 93
ninoderkinderen 0:8d87bc453349 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
ninoderkinderen 0:8d87bc453349 95 #endif /* UNUSED */
ninoderkinderen 0:8d87bc453349 96
ninoderkinderen 0:8d87bc453349 97 #if PAP_SUPPORT || CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 98 /* The name by which the peer authenticated itself to us. */
ninoderkinderen 0:8d87bc453349 99 static char peer_authname[MAXNAMELEN];
ninoderkinderen 0:8d87bc453349 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 101
ninoderkinderen 0:8d87bc453349 102 /* Records which authentication operations haven't completed yet. */
ninoderkinderen 0:8d87bc453349 103 static int auth_pending[NUM_PPP];
ninoderkinderen 0:8d87bc453349 104
ninoderkinderen 0:8d87bc453349 105 /* Set if we have successfully called plogin() */
ninoderkinderen 0:8d87bc453349 106 static int logged_in;
ninoderkinderen 0:8d87bc453349 107
ninoderkinderen 0:8d87bc453349 108 /* Set if we have run the /etc/ppp/auth-up script. */
ninoderkinderen 0:8d87bc453349 109 static int did_authup; /* @todo, we don't need this in lwip*/
ninoderkinderen 0:8d87bc453349 110
ninoderkinderen 0:8d87bc453349 111 /* List of addresses which the peer may use. */
ninoderkinderen 0:8d87bc453349 112 static struct wordlist *addresses[NUM_PPP];
ninoderkinderen 0:8d87bc453349 113
ninoderkinderen 0:8d87bc453349 114 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 115 /* Wordlist giving addresses which the peer may use
ninoderkinderen 0:8d87bc453349 116 without authenticating itself. */
ninoderkinderen 0:8d87bc453349 117 static struct wordlist *noauth_addrs;
ninoderkinderen 0:8d87bc453349 118
ninoderkinderen 0:8d87bc453349 119 /* Extra options to apply, from the secrets file entry for the peer. */
ninoderkinderen 0:8d87bc453349 120 static struct wordlist *extra_options;
ninoderkinderen 0:8d87bc453349 121 #endif /* UNUSED */
ninoderkinderen 0:8d87bc453349 122
ninoderkinderen 0:8d87bc453349 123 /* Number of network protocols which we have opened. */
ninoderkinderen 0:8d87bc453349 124 static int num_np_open;
ninoderkinderen 0:8d87bc453349 125
ninoderkinderen 0:8d87bc453349 126 /* Number of network protocols which have come up. */
ninoderkinderen 0:8d87bc453349 127 static int num_np_up;
ninoderkinderen 0:8d87bc453349 128
ninoderkinderen 0:8d87bc453349 129 #if PAP_SUPPORT || CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
ninoderkinderen 0:8d87bc453349 131 static int passwd_from_file;
ninoderkinderen 0:8d87bc453349 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 133
ninoderkinderen 0:8d87bc453349 134 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 135 /* Set if we require authentication only because we have a default route. */
ninoderkinderen 0:8d87bc453349 136 static bool default_auth;
ninoderkinderen 0:8d87bc453349 137
ninoderkinderen 0:8d87bc453349 138 /* Hook to enable a plugin to control the idle time limit */
ninoderkinderen 0:8d87bc453349 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
ninoderkinderen 0:8d87bc453349 140
ninoderkinderen 0:8d87bc453349 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
ninoderkinderen 0:8d87bc453349 142 int (*pap_check_hook) __P((void)) = NULL;
ninoderkinderen 0:8d87bc453349 143
ninoderkinderen 0:8d87bc453349 144 /* Hook for a plugin to check the PAP user and password */
ninoderkinderen 0:8d87bc453349 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
ninoderkinderen 0:8d87bc453349 146 struct wordlist **paddrs,
ninoderkinderen 0:8d87bc453349 147 struct wordlist **popts)) = NULL;
ninoderkinderen 0:8d87bc453349 148
ninoderkinderen 0:8d87bc453349 149 /* Hook for a plugin to know about the PAP user logout */
ninoderkinderen 0:8d87bc453349 150 void (*pap_logout_hook) __P((void)) = NULL;
ninoderkinderen 0:8d87bc453349 151
ninoderkinderen 0:8d87bc453349 152 /* Hook for a plugin to get the PAP password for authenticating us */
ninoderkinderen 0:8d87bc453349 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
ninoderkinderen 0:8d87bc453349 154
ninoderkinderen 0:8d87bc453349 155 /*
ninoderkinderen 0:8d87bc453349 156 * This is used to ensure that we don't start an auth-up/down
ninoderkinderen 0:8d87bc453349 157 * script while one is already running.
ninoderkinderen 0:8d87bc453349 158 */
ninoderkinderen 0:8d87bc453349 159 enum script_state {
ninoderkinderen 0:8d87bc453349 160 s_down,
ninoderkinderen 0:8d87bc453349 161 s_up
ninoderkinderen 0:8d87bc453349 162 };
ninoderkinderen 0:8d87bc453349 163
ninoderkinderen 0:8d87bc453349 164 static enum script_state auth_state = s_down;
ninoderkinderen 0:8d87bc453349 165 static enum script_state auth_script_state = s_down;
ninoderkinderen 0:8d87bc453349 166 static pid_t auth_script_pid = 0;
ninoderkinderen 0:8d87bc453349 167
ninoderkinderen 0:8d87bc453349 168 /*
ninoderkinderen 0:8d87bc453349 169 * Option variables.
ninoderkinderen 0:8d87bc453349 170 * lwip: some of these are present in the ppp_settings structure
ninoderkinderen 0:8d87bc453349 171 */
ninoderkinderen 0:8d87bc453349 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
ninoderkinderen 0:8d87bc453349 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
ninoderkinderen 0:8d87bc453349 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
ninoderkinderen 0:8d87bc453349 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
ninoderkinderen 0:8d87bc453349 176 bool usehostname = 0; /* Use hostname for our_name */
ninoderkinderen 0:8d87bc453349 177 bool auth_required = 0; /* Always require authentication from peer */
ninoderkinderen 0:8d87bc453349 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
ninoderkinderen 0:8d87bc453349 179 bool explicit_remote = 0; /* User specified explicit remote name */
ninoderkinderen 0:8d87bc453349 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
ninoderkinderen 0:8d87bc453349 181
ninoderkinderen 0:8d87bc453349 182 #endif /* UNUSED */
ninoderkinderen 0:8d87bc453349 183
ninoderkinderen 0:8d87bc453349 184 /* Bits in auth_pending[] */
ninoderkinderen 0:8d87bc453349 185 #define PAP_WITHPEER 1
ninoderkinderen 0:8d87bc453349 186 #define PAP_PEER 2
ninoderkinderen 0:8d87bc453349 187 #define CHAP_WITHPEER 4
ninoderkinderen 0:8d87bc453349 188 #define CHAP_PEER 8
ninoderkinderen 0:8d87bc453349 189
ninoderkinderen 0:8d87bc453349 190 /* @todo, move this somewhere */
ninoderkinderen 0:8d87bc453349 191 /* Used for storing a sequence of words. Usually malloced. */
ninoderkinderen 0:8d87bc453349 192 struct wordlist {
ninoderkinderen 0:8d87bc453349 193 struct wordlist *next;
ninoderkinderen 0:8d87bc453349 194 char word[1];
ninoderkinderen 0:8d87bc453349 195 };
ninoderkinderen 0:8d87bc453349 196
ninoderkinderen 0:8d87bc453349 197
ninoderkinderen 0:8d87bc453349 198 extern char *crypt (const char *, const char *);
ninoderkinderen 0:8d87bc453349 199
ninoderkinderen 0:8d87bc453349 200 /* Prototypes for procedures local to this file. */
ninoderkinderen 0:8d87bc453349 201
ninoderkinderen 0:8d87bc453349 202 static void network_phase (int);
ninoderkinderen 0:8d87bc453349 203 static void check_idle (void *);
ninoderkinderen 0:8d87bc453349 204 static void connect_time_expired (void *);
ninoderkinderen 0:8d87bc453349 205 #if 0
ninoderkinderen 0:8d87bc453349 206 static int plogin (char *, char *, char **, int *);
ninoderkinderen 0:8d87bc453349 207 #endif
ninoderkinderen 0:8d87bc453349 208 static void plogout (void);
ninoderkinderen 0:8d87bc453349 209 static int null_login (int);
ninoderkinderen 0:8d87bc453349 210 static int get_pap_passwd (int, char *, char *);
ninoderkinderen 0:8d87bc453349 211 static int have_pap_secret (void);
ninoderkinderen 0:8d87bc453349 212 static int have_chap_secret (char *, char *, u32_t);
ninoderkinderen 0:8d87bc453349 213 static int ip_addr_check (u32_t, struct wordlist *);
ninoderkinderen 0:8d87bc453349 214
ninoderkinderen 0:8d87bc453349 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 216 static int scan_authfile (FILE *, char *, char *, char *,
ninoderkinderen 0:8d87bc453349 217 struct wordlist **, struct wordlist **,
ninoderkinderen 0:8d87bc453349 218 char *);
ninoderkinderen 0:8d87bc453349 219 static void free_wordlist (struct wordlist *);
ninoderkinderen 0:8d87bc453349 220 static void auth_script (char *);
ninoderkinderen 0:8d87bc453349 221 static void auth_script_done (void *);
ninoderkinderen 0:8d87bc453349 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
ninoderkinderen 0:8d87bc453349 223 static int some_ip_ok (struct wordlist *);
ninoderkinderen 0:8d87bc453349 224 static int setupapfile (char **);
ninoderkinderen 0:8d87bc453349 225 static int privgroup (char **);
ninoderkinderen 0:8d87bc453349 226 static int set_noauth_addr (char **);
ninoderkinderen 0:8d87bc453349 227 static void check_access (FILE *, char *);
ninoderkinderen 0:8d87bc453349 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 229
ninoderkinderen 0:8d87bc453349 230 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 231 /*
ninoderkinderen 0:8d87bc453349 232 * Authentication-related options.
ninoderkinderen 0:8d87bc453349 233 */
ninoderkinderen 0:8d87bc453349 234 option_t auth_options[] = {
ninoderkinderen 0:8d87bc453349 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
ninoderkinderen 0:8d87bc453349 236 "Require PAP authentication from peer", 1, &auth_required },
ninoderkinderen 0:8d87bc453349 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
ninoderkinderen 0:8d87bc453349 238 "Require PAP authentication from peer", 1, &auth_required },
ninoderkinderen 0:8d87bc453349 239 { "refuse-pap", o_bool, &refuse_pap,
ninoderkinderen 0:8d87bc453349 240 "Don't agree to auth to peer with PAP", 1 },
ninoderkinderen 0:8d87bc453349 241 { "-pap", o_bool, &refuse_pap,
ninoderkinderen 0:8d87bc453349 242 "Don't allow PAP authentication with peer", 1 },
ninoderkinderen 0:8d87bc453349 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
ninoderkinderen 0:8d87bc453349 244 "Require CHAP authentication from peer", 1, &auth_required },
ninoderkinderen 0:8d87bc453349 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
ninoderkinderen 0:8d87bc453349 246 "Require CHAP authentication from peer", 1, &auth_required },
ninoderkinderen 0:8d87bc453349 247 { "refuse-chap", o_bool, &refuse_chap,
ninoderkinderen 0:8d87bc453349 248 "Don't agree to auth to peer with CHAP", 1 },
ninoderkinderen 0:8d87bc453349 249 { "-chap", o_bool, &refuse_chap,
ninoderkinderen 0:8d87bc453349 250 "Don't allow CHAP authentication with peer", 1 },
ninoderkinderen 0:8d87bc453349 251 { "name", o_string, our_name,
ninoderkinderen 0:8d87bc453349 252 "Set local name for authentication",
ninoderkinderen 0:8d87bc453349 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
ninoderkinderen 0:8d87bc453349 254 { "user", o_string, user,
ninoderkinderen 0:8d87bc453349 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
ninoderkinderen 0:8d87bc453349 256 { "usehostname", o_bool, &usehostname,
ninoderkinderen 0:8d87bc453349 257 "Must use hostname for authentication", 1 },
ninoderkinderen 0:8d87bc453349 258 { "remotename", o_string, remote_name,
ninoderkinderen 0:8d87bc453349 259 "Set remote name for authentication", OPT_STATIC,
ninoderkinderen 0:8d87bc453349 260 &explicit_remote, MAXNAMELEN },
ninoderkinderen 0:8d87bc453349 261 { "auth", o_bool, &auth_required,
ninoderkinderen 0:8d87bc453349 262 "Require authentication from peer", 1 },
ninoderkinderen 0:8d87bc453349 263 { "noauth", o_bool, &auth_required,
ninoderkinderen 0:8d87bc453349 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
ninoderkinderen 0:8d87bc453349 265 { "login", o_bool, &uselogin,
ninoderkinderen 0:8d87bc453349 266 "Use system password database for PAP", 1 },
ninoderkinderen 0:8d87bc453349 267 { "papcrypt", o_bool, &cryptpap,
ninoderkinderen 0:8d87bc453349 268 "PAP passwords are encrypted", 1 },
ninoderkinderen 0:8d87bc453349 269 { "+ua", o_special, (void *)setupapfile,
ninoderkinderen 0:8d87bc453349 270 "Get PAP user and password from file" },
ninoderkinderen 0:8d87bc453349 271 { "password", o_string, passwd,
ninoderkinderen 0:8d87bc453349 272 "Password for authenticating us to the peer", OPT_STATIC,
ninoderkinderen 0:8d87bc453349 273 NULL, MAXSECRETLEN },
ninoderkinderen 0:8d87bc453349 274 { "privgroup", o_special, (void *)privgroup,
ninoderkinderen 0:8d87bc453349 275 "Allow group members to use privileged options", OPT_PRIV },
ninoderkinderen 0:8d87bc453349 276 { "allow-ip", o_special, (void *)set_noauth_addr,
ninoderkinderen 0:8d87bc453349 277 "Set IP address(es) which can be used without authentication",
ninoderkinderen 0:8d87bc453349 278 OPT_PRIV },
ninoderkinderen 0:8d87bc453349 279 { NULL }
ninoderkinderen 0:8d87bc453349 280 };
ninoderkinderen 0:8d87bc453349 281 #endif /* UNUSED */
ninoderkinderen 0:8d87bc453349 282 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 283 /*
ninoderkinderen 0:8d87bc453349 284 * setupapfile - specifies UPAP info for authenticating with peer.
ninoderkinderen 0:8d87bc453349 285 */
ninoderkinderen 0:8d87bc453349 286 static int
ninoderkinderen 0:8d87bc453349 287 setupapfile(char **argv)
ninoderkinderen 0:8d87bc453349 288 {
ninoderkinderen 0:8d87bc453349 289 FILE * ufile;
ninoderkinderen 0:8d87bc453349 290 int l;
ninoderkinderen 0:8d87bc453349 291
ninoderkinderen 0:8d87bc453349 292 lcp_allowoptions[0].neg_upap = 1;
ninoderkinderen 0:8d87bc453349 293
ninoderkinderen 0:8d87bc453349 294 /* open user info file */
ninoderkinderen 0:8d87bc453349 295 seteuid(getuid());
ninoderkinderen 0:8d87bc453349 296 ufile = fopen(*argv, "r");
ninoderkinderen 0:8d87bc453349 297 seteuid(0);
ninoderkinderen 0:8d87bc453349 298 if (ufile == NULL) {
ninoderkinderen 0:8d87bc453349 299 option_error("unable to open user login data file %s", *argv);
ninoderkinderen 0:8d87bc453349 300 return 0;
ninoderkinderen 0:8d87bc453349 301 }
ninoderkinderen 0:8d87bc453349 302 check_access(ufile, *argv);
ninoderkinderen 0:8d87bc453349 303
ninoderkinderen 0:8d87bc453349 304 /* get username */
ninoderkinderen 0:8d87bc453349 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
ninoderkinderen 0:8d87bc453349 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
ninoderkinderen 0:8d87bc453349 307 option_error("unable to read user login data file %s", *argv);
ninoderkinderen 0:8d87bc453349 308 return 0;
ninoderkinderen 0:8d87bc453349 309 }
ninoderkinderen 0:8d87bc453349 310 fclose(ufile);
ninoderkinderen 0:8d87bc453349 311
ninoderkinderen 0:8d87bc453349 312 /* get rid of newlines */
ninoderkinderen 0:8d87bc453349 313 l = strlen(user);
ninoderkinderen 0:8d87bc453349 314 if (l > 0 && user[l-1] == '\n')
ninoderkinderen 0:8d87bc453349 315 user[l-1] = 0;
ninoderkinderen 0:8d87bc453349 316 l = strlen(passwd);
ninoderkinderen 0:8d87bc453349 317 if (l > 0 && passwd[l-1] == '\n')
ninoderkinderen 0:8d87bc453349 318 passwd[l-1] = 0;
ninoderkinderen 0:8d87bc453349 319
ninoderkinderen 0:8d87bc453349 320 return (1);
ninoderkinderen 0:8d87bc453349 321 }
ninoderkinderen 0:8d87bc453349 322 #endif /* UNUSED */
ninoderkinderen 0:8d87bc453349 323
ninoderkinderen 0:8d87bc453349 324 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 325 /*
ninoderkinderen 0:8d87bc453349 326 * privgroup - allow members of the group to have privileged access.
ninoderkinderen 0:8d87bc453349 327 */
ninoderkinderen 0:8d87bc453349 328 static int
ninoderkinderen 0:8d87bc453349 329 privgroup(char **argv)
ninoderkinderen 0:8d87bc453349 330 {
ninoderkinderen 0:8d87bc453349 331 struct group *g;
ninoderkinderen 0:8d87bc453349 332 int i;
ninoderkinderen 0:8d87bc453349 333
ninoderkinderen 0:8d87bc453349 334 g = getgrnam(*argv);
ninoderkinderen 0:8d87bc453349 335 if (g == 0) {
ninoderkinderen 0:8d87bc453349 336 option_error("group %s is unknown", *argv);
ninoderkinderen 0:8d87bc453349 337 return 0;
ninoderkinderen 0:8d87bc453349 338 }
ninoderkinderen 0:8d87bc453349 339 for (i = 0; i < ngroups; ++i) {
ninoderkinderen 0:8d87bc453349 340 if (groups[i] == g->gr_gid) {
ninoderkinderen 0:8d87bc453349 341 privileged = 1;
ninoderkinderen 0:8d87bc453349 342 break;
ninoderkinderen 0:8d87bc453349 343 }
ninoderkinderen 0:8d87bc453349 344 }
ninoderkinderen 0:8d87bc453349 345 return 1;
ninoderkinderen 0:8d87bc453349 346 }
ninoderkinderen 0:8d87bc453349 347 #endif
ninoderkinderen 0:8d87bc453349 348
ninoderkinderen 0:8d87bc453349 349 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 350 /*
ninoderkinderen 0:8d87bc453349 351 * set_noauth_addr - set address(es) that can be used without authentication.
ninoderkinderen 0:8d87bc453349 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
ninoderkinderen 0:8d87bc453349 353 */
ninoderkinderen 0:8d87bc453349 354 static int
ninoderkinderen 0:8d87bc453349 355 set_noauth_addr(char **argv)
ninoderkinderen 0:8d87bc453349 356 {
ninoderkinderen 0:8d87bc453349 357 char *addr = *argv;
ninoderkinderen 0:8d87bc453349 358 int l = strlen(addr);
ninoderkinderen 0:8d87bc453349 359 struct wordlist *wp;
ninoderkinderen 0:8d87bc453349 360
ninoderkinderen 0:8d87bc453349 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
ninoderkinderen 0:8d87bc453349 362 if (wp == NULL)
ninoderkinderen 0:8d87bc453349 363 novm("allow-ip argument");
ninoderkinderen 0:8d87bc453349 364 wp->word = (char *) (wp + 1);
ninoderkinderen 0:8d87bc453349 365 wp->next = noauth_addrs;
ninoderkinderen 0:8d87bc453349 366 BCOPY(addr, wp->word, l);
ninoderkinderen 0:8d87bc453349 367 noauth_addrs = wp;
ninoderkinderen 0:8d87bc453349 368 return 1;
ninoderkinderen 0:8d87bc453349 369 }
ninoderkinderen 0:8d87bc453349 370 #endif /* UNUSED */
ninoderkinderen 0:8d87bc453349 371
ninoderkinderen 0:8d87bc453349 372 /*
ninoderkinderen 0:8d87bc453349 373 * An Open on LCP has requested a change from Dead to Establish phase.
ninoderkinderen 0:8d87bc453349 374 * Do what's necessary to bring the physical layer up.
ninoderkinderen 0:8d87bc453349 375 */
ninoderkinderen 0:8d87bc453349 376 void
ninoderkinderen 0:8d87bc453349 377 link_required(int unit)
ninoderkinderen 0:8d87bc453349 378 {
ninoderkinderen 0:8d87bc453349 379 LWIP_UNUSED_ARG(unit);
ninoderkinderen 0:8d87bc453349 380
ninoderkinderen 0:8d87bc453349 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
ninoderkinderen 0:8d87bc453349 382 }
ninoderkinderen 0:8d87bc453349 383
ninoderkinderen 0:8d87bc453349 384 /*
ninoderkinderen 0:8d87bc453349 385 * LCP has terminated the link; go to the Dead phase and take the
ninoderkinderen 0:8d87bc453349 386 * physical layer down.
ninoderkinderen 0:8d87bc453349 387 */
ninoderkinderen 0:8d87bc453349 388 void
ninoderkinderen 0:8d87bc453349 389 link_terminated(int unit)
ninoderkinderen 0:8d87bc453349 390 {
ninoderkinderen 0:8d87bc453349 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
ninoderkinderen 0:8d87bc453349 392 if (lcp_phase[unit] == PHASE_DEAD) {
ninoderkinderen 0:8d87bc453349 393 return;
ninoderkinderen 0:8d87bc453349 394 }
ninoderkinderen 0:8d87bc453349 395 if (logged_in) {
ninoderkinderen 0:8d87bc453349 396 plogout();
ninoderkinderen 0:8d87bc453349 397 }
ninoderkinderen 0:8d87bc453349 398 lcp_phase[unit] = PHASE_DEAD;
ninoderkinderen 0:8d87bc453349 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
ninoderkinderen 0:8d87bc453349 400 pppLinkTerminated(unit);
ninoderkinderen 0:8d87bc453349 401 }
ninoderkinderen 0:8d87bc453349 402
ninoderkinderen 0:8d87bc453349 403 /*
ninoderkinderen 0:8d87bc453349 404 * LCP has gone down; it will either die or try to re-establish.
ninoderkinderen 0:8d87bc453349 405 */
ninoderkinderen 0:8d87bc453349 406 void
ninoderkinderen 0:8d87bc453349 407 link_down(int unit)
ninoderkinderen 0:8d87bc453349 408 {
ninoderkinderen 0:8d87bc453349 409 int i;
ninoderkinderen 0:8d87bc453349 410 struct protent *protp;
ninoderkinderen 0:8d87bc453349 411
ninoderkinderen 0:8d87bc453349 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
ninoderkinderen 0:8d87bc453349 413
ninoderkinderen 0:8d87bc453349 414 if (did_authup) {
ninoderkinderen 0:8d87bc453349 415 /* XXX Do link down processing. */
ninoderkinderen 0:8d87bc453349 416 did_authup = 0;
ninoderkinderen 0:8d87bc453349 417 }
ninoderkinderen 0:8d87bc453349 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
ninoderkinderen 0:8d87bc453349 419 if (!protp->enabled_flag) {
ninoderkinderen 0:8d87bc453349 420 continue;
ninoderkinderen 0:8d87bc453349 421 }
ninoderkinderen 0:8d87bc453349 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
ninoderkinderen 0:8d87bc453349 423 (*protp->lowerdown)(unit);
ninoderkinderen 0:8d87bc453349 424 }
ninoderkinderen 0:8d87bc453349 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
ninoderkinderen 0:8d87bc453349 426 (*protp->close)(unit, "LCP down");
ninoderkinderen 0:8d87bc453349 427 }
ninoderkinderen 0:8d87bc453349 428 }
ninoderkinderen 0:8d87bc453349 429 num_np_open = 0; /* number of network protocols we have opened */
ninoderkinderen 0:8d87bc453349 430 num_np_up = 0; /* Number of network protocols which have come up */
ninoderkinderen 0:8d87bc453349 431
ninoderkinderen 0:8d87bc453349 432 if (lcp_phase[unit] != PHASE_DEAD) {
ninoderkinderen 0:8d87bc453349 433 lcp_phase[unit] = PHASE_TERMINATE;
ninoderkinderen 0:8d87bc453349 434 }
ninoderkinderen 0:8d87bc453349 435 pppLinkDown(unit);
ninoderkinderen 0:8d87bc453349 436 }
ninoderkinderen 0:8d87bc453349 437
ninoderkinderen 0:8d87bc453349 438 /*
ninoderkinderen 0:8d87bc453349 439 * The link is established.
ninoderkinderen 0:8d87bc453349 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
ninoderkinderen 0:8d87bc453349 441 */
ninoderkinderen 0:8d87bc453349 442 void
ninoderkinderen 0:8d87bc453349 443 link_established(int unit)
ninoderkinderen 0:8d87bc453349 444 {
ninoderkinderen 0:8d87bc453349 445 int auth;
ninoderkinderen 0:8d87bc453349 446 int i;
ninoderkinderen 0:8d87bc453349 447 struct protent *protp;
ninoderkinderen 0:8d87bc453349 448 lcp_options *wo = &lcp_wantoptions[unit];
ninoderkinderen 0:8d87bc453349 449 lcp_options *go = &lcp_gotoptions[unit];
ninoderkinderen 0:8d87bc453349 450 #if PAP_SUPPORT || CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 451 lcp_options *ho = &lcp_hisoptions[unit];
ninoderkinderen 0:8d87bc453349 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 453
ninoderkinderen 0:8d87bc453349 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
ninoderkinderen 0:8d87bc453349 455 /*
ninoderkinderen 0:8d87bc453349 456 * Tell higher-level protocols that LCP is up.
ninoderkinderen 0:8d87bc453349 457 */
ninoderkinderen 0:8d87bc453349 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
ninoderkinderen 0:8d87bc453349 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
ninoderkinderen 0:8d87bc453349 460 (*protp->lowerup)(unit);
ninoderkinderen 0:8d87bc453349 461 }
ninoderkinderen 0:8d87bc453349 462 }
ninoderkinderen 0:8d87bc453349 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
ninoderkinderen 0:8d87bc453349 464 /*
ninoderkinderen 0:8d87bc453349 465 * We wanted the peer to authenticate itself, and it refused:
ninoderkinderen 0:8d87bc453349 466 * treat it as though it authenticated with PAP using a username
ninoderkinderen 0:8d87bc453349 467 * of "" and a password of "". If that's not OK, boot it out.
ninoderkinderen 0:8d87bc453349 468 */
ninoderkinderen 0:8d87bc453349 469 if (!wo->neg_upap || !null_login(unit)) {
ninoderkinderen 0:8d87bc453349 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
ninoderkinderen 0:8d87bc453349 471 lcp_close(unit, "peer refused to authenticate");
ninoderkinderen 0:8d87bc453349 472 return;
ninoderkinderen 0:8d87bc453349 473 }
ninoderkinderen 0:8d87bc453349 474 }
ninoderkinderen 0:8d87bc453349 475
ninoderkinderen 0:8d87bc453349 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
ninoderkinderen 0:8d87bc453349 477 auth = 0;
ninoderkinderen 0:8d87bc453349 478 #if CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 479 if (go->neg_chap) {
ninoderkinderen 0:8d87bc453349 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
ninoderkinderen 0:8d87bc453349 481 auth |= CHAP_PEER;
ninoderkinderen 0:8d87bc453349 482 }
ninoderkinderen 0:8d87bc453349 483 #endif /* CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 484 #if PAP_SUPPORT && CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 485 else
ninoderkinderen 0:8d87bc453349 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 487 #if PAP_SUPPORT
ninoderkinderen 0:8d87bc453349 488 if (go->neg_upap) {
ninoderkinderen 0:8d87bc453349 489 upap_authpeer(unit);
ninoderkinderen 0:8d87bc453349 490 auth |= PAP_PEER;
ninoderkinderen 0:8d87bc453349 491 }
ninoderkinderen 0:8d87bc453349 492 #endif /* PAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 493 #if CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 494 if (ho->neg_chap) {
ninoderkinderen 0:8d87bc453349 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
ninoderkinderen 0:8d87bc453349 496 auth |= CHAP_WITHPEER;
ninoderkinderen 0:8d87bc453349 497 }
ninoderkinderen 0:8d87bc453349 498 #endif /* CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 499 #if PAP_SUPPORT && CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 500 else
ninoderkinderen 0:8d87bc453349 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 502 #if PAP_SUPPORT
ninoderkinderen 0:8d87bc453349 503 if (ho->neg_upap) {
ninoderkinderen 0:8d87bc453349 504 if (ppp_settings.passwd[0] == 0) {
ninoderkinderen 0:8d87bc453349 505 passwd_from_file = 1;
ninoderkinderen 0:8d87bc453349 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
ninoderkinderen 0:8d87bc453349 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
ninoderkinderen 0:8d87bc453349 508 }
ninoderkinderen 0:8d87bc453349 509 }
ninoderkinderen 0:8d87bc453349 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
ninoderkinderen 0:8d87bc453349 511 auth |= PAP_WITHPEER;
ninoderkinderen 0:8d87bc453349 512 }
ninoderkinderen 0:8d87bc453349 513 #endif /* PAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 514 auth_pending[unit] = auth;
ninoderkinderen 0:8d87bc453349 515
ninoderkinderen 0:8d87bc453349 516 if (!auth) {
ninoderkinderen 0:8d87bc453349 517 network_phase(unit);
ninoderkinderen 0:8d87bc453349 518 }
ninoderkinderen 0:8d87bc453349 519 }
ninoderkinderen 0:8d87bc453349 520
ninoderkinderen 0:8d87bc453349 521 /*
ninoderkinderen 0:8d87bc453349 522 * Proceed to the network phase.
ninoderkinderen 0:8d87bc453349 523 */
ninoderkinderen 0:8d87bc453349 524 static void
ninoderkinderen 0:8d87bc453349 525 network_phase(int unit)
ninoderkinderen 0:8d87bc453349 526 {
ninoderkinderen 0:8d87bc453349 527 int i;
ninoderkinderen 0:8d87bc453349 528 struct protent *protp;
ninoderkinderen 0:8d87bc453349 529 lcp_options *go = &lcp_gotoptions[unit];
ninoderkinderen 0:8d87bc453349 530
ninoderkinderen 0:8d87bc453349 531 /*
ninoderkinderen 0:8d87bc453349 532 * If the peer had to authenticate, run the auth-up script now.
ninoderkinderen 0:8d87bc453349 533 */
ninoderkinderen 0:8d87bc453349 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
ninoderkinderen 0:8d87bc453349 535 /* XXX Do setup for peer authentication. */
ninoderkinderen 0:8d87bc453349 536 did_authup = 1;
ninoderkinderen 0:8d87bc453349 537 }
ninoderkinderen 0:8d87bc453349 538
ninoderkinderen 0:8d87bc453349 539 #if CBCP_SUPPORT
ninoderkinderen 0:8d87bc453349 540 /*
ninoderkinderen 0:8d87bc453349 541 * If we negotiated callback, do it now.
ninoderkinderen 0:8d87bc453349 542 */
ninoderkinderen 0:8d87bc453349 543 if (go->neg_cbcp) {
ninoderkinderen 0:8d87bc453349 544 lcp_phase[unit] = PHASE_CALLBACK;
ninoderkinderen 0:8d87bc453349 545 (*cbcp_protent.open)(unit);
ninoderkinderen 0:8d87bc453349 546 return;
ninoderkinderen 0:8d87bc453349 547 }
ninoderkinderen 0:8d87bc453349 548 #endif /* CBCP_SUPPORT */
ninoderkinderen 0:8d87bc453349 549
ninoderkinderen 0:8d87bc453349 550 lcp_phase[unit] = PHASE_NETWORK;
ninoderkinderen 0:8d87bc453349 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
ninoderkinderen 0:8d87bc453349 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
ninoderkinderen 0:8d87bc453349 553 (*protp->open)(unit);
ninoderkinderen 0:8d87bc453349 554 if (protp->protocol != PPP_CCP) {
ninoderkinderen 0:8d87bc453349 555 ++num_np_open;
ninoderkinderen 0:8d87bc453349 556 }
ninoderkinderen 0:8d87bc453349 557 }
ninoderkinderen 0:8d87bc453349 558 }
ninoderkinderen 0:8d87bc453349 559
ninoderkinderen 0:8d87bc453349 560 if (num_np_open == 0) {
ninoderkinderen 0:8d87bc453349 561 /* nothing to do */
ninoderkinderen 0:8d87bc453349 562 lcp_close(0, "No network protocols running");
ninoderkinderen 0:8d87bc453349 563 }
ninoderkinderen 0:8d87bc453349 564 }
ninoderkinderen 0:8d87bc453349 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
ninoderkinderen 0:8d87bc453349 566
ninoderkinderen 0:8d87bc453349 567 /*
ninoderkinderen 0:8d87bc453349 568 * The peer has failed to authenticate himself using `protocol'.
ninoderkinderen 0:8d87bc453349 569 */
ninoderkinderen 0:8d87bc453349 570 void
ninoderkinderen 0:8d87bc453349 571 auth_peer_fail(int unit, u16_t protocol)
ninoderkinderen 0:8d87bc453349 572 {
ninoderkinderen 0:8d87bc453349 573 LWIP_UNUSED_ARG(protocol);
ninoderkinderen 0:8d87bc453349 574
ninoderkinderen 0:8d87bc453349 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
ninoderkinderen 0:8d87bc453349 576 /*
ninoderkinderen 0:8d87bc453349 577 * Authentication failure: take the link down
ninoderkinderen 0:8d87bc453349 578 */
ninoderkinderen 0:8d87bc453349 579 lcp_close(unit, "Authentication failed");
ninoderkinderen 0:8d87bc453349 580 }
ninoderkinderen 0:8d87bc453349 581
ninoderkinderen 0:8d87bc453349 582
ninoderkinderen 0:8d87bc453349 583 #if PAP_SUPPORT || CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 584 /*
ninoderkinderen 0:8d87bc453349 585 * The peer has been successfully authenticated using `protocol'.
ninoderkinderen 0:8d87bc453349 586 */
ninoderkinderen 0:8d87bc453349 587 void
ninoderkinderen 0:8d87bc453349 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
ninoderkinderen 0:8d87bc453349 589 {
ninoderkinderen 0:8d87bc453349 590 int pbit;
ninoderkinderen 0:8d87bc453349 591
ninoderkinderen 0:8d87bc453349 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
ninoderkinderen 0:8d87bc453349 593 switch (protocol) {
ninoderkinderen 0:8d87bc453349 594 case PPP_CHAP:
ninoderkinderen 0:8d87bc453349 595 pbit = CHAP_PEER;
ninoderkinderen 0:8d87bc453349 596 break;
ninoderkinderen 0:8d87bc453349 597 case PPP_PAP:
ninoderkinderen 0:8d87bc453349 598 pbit = PAP_PEER;
ninoderkinderen 0:8d87bc453349 599 break;
ninoderkinderen 0:8d87bc453349 600 default:
ninoderkinderen 0:8d87bc453349 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
ninoderkinderen 0:8d87bc453349 602 return;
ninoderkinderen 0:8d87bc453349 603 }
ninoderkinderen 0:8d87bc453349 604
ninoderkinderen 0:8d87bc453349 605 /*
ninoderkinderen 0:8d87bc453349 606 * Save the authenticated name of the peer for later.
ninoderkinderen 0:8d87bc453349 607 */
ninoderkinderen 0:8d87bc453349 608 if (namelen > (int)sizeof(peer_authname) - 1) {
ninoderkinderen 0:8d87bc453349 609 namelen = sizeof(peer_authname) - 1;
ninoderkinderen 0:8d87bc453349 610 }
ninoderkinderen 0:8d87bc453349 611 BCOPY(name, peer_authname, namelen);
ninoderkinderen 0:8d87bc453349 612 peer_authname[namelen] = 0;
ninoderkinderen 0:8d87bc453349 613
ninoderkinderen 0:8d87bc453349 614 /*
ninoderkinderen 0:8d87bc453349 615 * If there is no more authentication still to be done,
ninoderkinderen 0:8d87bc453349 616 * proceed to the network (or callback) phase.
ninoderkinderen 0:8d87bc453349 617 */
ninoderkinderen 0:8d87bc453349 618 if ((auth_pending[unit] &= ~pbit) == 0) {
ninoderkinderen 0:8d87bc453349 619 network_phase(unit);
ninoderkinderen 0:8d87bc453349 620 }
ninoderkinderen 0:8d87bc453349 621 }
ninoderkinderen 0:8d87bc453349 622
ninoderkinderen 0:8d87bc453349 623 /*
ninoderkinderen 0:8d87bc453349 624 * We have failed to authenticate ourselves to the peer using `protocol'.
ninoderkinderen 0:8d87bc453349 625 */
ninoderkinderen 0:8d87bc453349 626 void
ninoderkinderen 0:8d87bc453349 627 auth_withpeer_fail(int unit, u16_t protocol)
ninoderkinderen 0:8d87bc453349 628 {
ninoderkinderen 0:8d87bc453349 629 int errCode = PPPERR_AUTHFAIL;
ninoderkinderen 0:8d87bc453349 630
ninoderkinderen 0:8d87bc453349 631 LWIP_UNUSED_ARG(protocol);
ninoderkinderen 0:8d87bc453349 632
ninoderkinderen 0:8d87bc453349 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
ninoderkinderen 0:8d87bc453349 634 if (passwd_from_file) {
ninoderkinderen 0:8d87bc453349 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
ninoderkinderen 0:8d87bc453349 636 }
ninoderkinderen 0:8d87bc453349 637
ninoderkinderen 0:8d87bc453349 638 /*
ninoderkinderen 0:8d87bc453349 639 * We've failed to authenticate ourselves to our peer.
ninoderkinderen 0:8d87bc453349 640 * He'll probably take the link down, and there's not much
ninoderkinderen 0:8d87bc453349 641 * we can do except wait for that.
ninoderkinderen 0:8d87bc453349 642 */
ninoderkinderen 0:8d87bc453349 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
ninoderkinderen 0:8d87bc453349 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
ninoderkinderen 0:8d87bc453349 645 }
ninoderkinderen 0:8d87bc453349 646
ninoderkinderen 0:8d87bc453349 647 /*
ninoderkinderen 0:8d87bc453349 648 * We have successfully authenticated ourselves with the peer using `protocol'.
ninoderkinderen 0:8d87bc453349 649 */
ninoderkinderen 0:8d87bc453349 650 void
ninoderkinderen 0:8d87bc453349 651 auth_withpeer_success(int unit, u16_t protocol)
ninoderkinderen 0:8d87bc453349 652 {
ninoderkinderen 0:8d87bc453349 653 int pbit;
ninoderkinderen 0:8d87bc453349 654
ninoderkinderen 0:8d87bc453349 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
ninoderkinderen 0:8d87bc453349 656 switch (protocol) {
ninoderkinderen 0:8d87bc453349 657 case PPP_CHAP:
ninoderkinderen 0:8d87bc453349 658 pbit = CHAP_WITHPEER;
ninoderkinderen 0:8d87bc453349 659 break;
ninoderkinderen 0:8d87bc453349 660 case PPP_PAP:
ninoderkinderen 0:8d87bc453349 661 if (passwd_from_file) {
ninoderkinderen 0:8d87bc453349 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
ninoderkinderen 0:8d87bc453349 663 }
ninoderkinderen 0:8d87bc453349 664 pbit = PAP_WITHPEER;
ninoderkinderen 0:8d87bc453349 665 break;
ninoderkinderen 0:8d87bc453349 666 default:
ninoderkinderen 0:8d87bc453349 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
ninoderkinderen 0:8d87bc453349 668 pbit = 0;
ninoderkinderen 0:8d87bc453349 669 }
ninoderkinderen 0:8d87bc453349 670
ninoderkinderen 0:8d87bc453349 671 /*
ninoderkinderen 0:8d87bc453349 672 * If there is no more authentication still being done,
ninoderkinderen 0:8d87bc453349 673 * proceed to the network (or callback) phase.
ninoderkinderen 0:8d87bc453349 674 */
ninoderkinderen 0:8d87bc453349 675 if ((auth_pending[unit] &= ~pbit) == 0) {
ninoderkinderen 0:8d87bc453349 676 network_phase(unit);
ninoderkinderen 0:8d87bc453349 677 }
ninoderkinderen 0:8d87bc453349 678 }
ninoderkinderen 0:8d87bc453349 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 680
ninoderkinderen 0:8d87bc453349 681
ninoderkinderen 0:8d87bc453349 682 /*
ninoderkinderen 0:8d87bc453349 683 * np_up - a network protocol has come up.
ninoderkinderen 0:8d87bc453349 684 */
ninoderkinderen 0:8d87bc453349 685 void
ninoderkinderen 0:8d87bc453349 686 np_up(int unit, u16_t proto)
ninoderkinderen 0:8d87bc453349 687 {
ninoderkinderen 0:8d87bc453349 688 LWIP_UNUSED_ARG(unit);
ninoderkinderen 0:8d87bc453349 689 LWIP_UNUSED_ARG(proto);
ninoderkinderen 0:8d87bc453349 690
ninoderkinderen 0:8d87bc453349 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
ninoderkinderen 0:8d87bc453349 692 if (num_np_up == 0) {
ninoderkinderen 0:8d87bc453349 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
ninoderkinderen 0:8d87bc453349 694 /*
ninoderkinderen 0:8d87bc453349 695 * At this point we consider that the link has come up successfully.
ninoderkinderen 0:8d87bc453349 696 */
ninoderkinderen 0:8d87bc453349 697 if (ppp_settings.idle_time_limit > 0) {
ninoderkinderen 0:8d87bc453349 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
ninoderkinderen 0:8d87bc453349 699 }
ninoderkinderen 0:8d87bc453349 700
ninoderkinderen 0:8d87bc453349 701 /*
ninoderkinderen 0:8d87bc453349 702 * Set a timeout to close the connection once the maximum
ninoderkinderen 0:8d87bc453349 703 * connect time has expired.
ninoderkinderen 0:8d87bc453349 704 */
ninoderkinderen 0:8d87bc453349 705 if (ppp_settings.maxconnect > 0) {
ninoderkinderen 0:8d87bc453349 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
ninoderkinderen 0:8d87bc453349 707 }
ninoderkinderen 0:8d87bc453349 708 }
ninoderkinderen 0:8d87bc453349 709 ++num_np_up;
ninoderkinderen 0:8d87bc453349 710 }
ninoderkinderen 0:8d87bc453349 711
ninoderkinderen 0:8d87bc453349 712 /*
ninoderkinderen 0:8d87bc453349 713 * np_down - a network protocol has gone down.
ninoderkinderen 0:8d87bc453349 714 */
ninoderkinderen 0:8d87bc453349 715 void
ninoderkinderen 0:8d87bc453349 716 np_down(int unit, u16_t proto)
ninoderkinderen 0:8d87bc453349 717 {
ninoderkinderen 0:8d87bc453349 718 LWIP_UNUSED_ARG(unit);
ninoderkinderen 0:8d87bc453349 719 LWIP_UNUSED_ARG(proto);
ninoderkinderen 0:8d87bc453349 720
ninoderkinderen 0:8d87bc453349 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
ninoderkinderen 0:8d87bc453349 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
ninoderkinderen 0:8d87bc453349 723 UNTIMEOUT(check_idle, NULL);
ninoderkinderen 0:8d87bc453349 724 }
ninoderkinderen 0:8d87bc453349 725 }
ninoderkinderen 0:8d87bc453349 726
ninoderkinderen 0:8d87bc453349 727 /*
ninoderkinderen 0:8d87bc453349 728 * np_finished - a network protocol has finished using the link.
ninoderkinderen 0:8d87bc453349 729 */
ninoderkinderen 0:8d87bc453349 730 void
ninoderkinderen 0:8d87bc453349 731 np_finished(int unit, u16_t proto)
ninoderkinderen 0:8d87bc453349 732 {
ninoderkinderen 0:8d87bc453349 733 LWIP_UNUSED_ARG(unit);
ninoderkinderen 0:8d87bc453349 734 LWIP_UNUSED_ARG(proto);
ninoderkinderen 0:8d87bc453349 735
ninoderkinderen 0:8d87bc453349 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
ninoderkinderen 0:8d87bc453349 737 if (--num_np_open <= 0) {
ninoderkinderen 0:8d87bc453349 738 /* no further use for the link: shut up shop. */
ninoderkinderen 0:8d87bc453349 739 lcp_close(0, "No network protocols running");
ninoderkinderen 0:8d87bc453349 740 }
ninoderkinderen 0:8d87bc453349 741 }
ninoderkinderen 0:8d87bc453349 742
ninoderkinderen 0:8d87bc453349 743 /*
ninoderkinderen 0:8d87bc453349 744 * check_idle - check whether the link has been idle for long
ninoderkinderen 0:8d87bc453349 745 * enough that we can shut it down.
ninoderkinderen 0:8d87bc453349 746 */
ninoderkinderen 0:8d87bc453349 747 static void
ninoderkinderen 0:8d87bc453349 748 check_idle(void *arg)
ninoderkinderen 0:8d87bc453349 749 {
ninoderkinderen 0:8d87bc453349 750 struct ppp_idle idle;
ninoderkinderen 0:8d87bc453349 751 u_short itime;
ninoderkinderen 0:8d87bc453349 752
ninoderkinderen 0:8d87bc453349 753 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 754 if (!get_idle_time(0, &idle)) {
ninoderkinderen 0:8d87bc453349 755 return;
ninoderkinderen 0:8d87bc453349 756 }
ninoderkinderen 0:8d87bc453349 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
ninoderkinderen 0:8d87bc453349 758 if (itime >= ppp_settings.idle_time_limit) {
ninoderkinderen 0:8d87bc453349 759 /* link is idle: shut it down. */
ninoderkinderen 0:8d87bc453349 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
ninoderkinderen 0:8d87bc453349 761 lcp_close(0, "Link inactive");
ninoderkinderen 0:8d87bc453349 762 } else {
ninoderkinderen 0:8d87bc453349 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
ninoderkinderen 0:8d87bc453349 764 }
ninoderkinderen 0:8d87bc453349 765 }
ninoderkinderen 0:8d87bc453349 766
ninoderkinderen 0:8d87bc453349 767 /*
ninoderkinderen 0:8d87bc453349 768 * connect_time_expired - log a message and close the connection.
ninoderkinderen 0:8d87bc453349 769 */
ninoderkinderen 0:8d87bc453349 770 static void
ninoderkinderen 0:8d87bc453349 771 connect_time_expired(void *arg)
ninoderkinderen 0:8d87bc453349 772 {
ninoderkinderen 0:8d87bc453349 773 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 774
ninoderkinderen 0:8d87bc453349 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
ninoderkinderen 0:8d87bc453349 776 lcp_close(0, "Connect time expired"); /* Close connection */
ninoderkinderen 0:8d87bc453349 777 }
ninoderkinderen 0:8d87bc453349 778
ninoderkinderen 0:8d87bc453349 779 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 780 /*
ninoderkinderen 0:8d87bc453349 781 * auth_check_options - called to check authentication options.
ninoderkinderen 0:8d87bc453349 782 */
ninoderkinderen 0:8d87bc453349 783 void
ninoderkinderen 0:8d87bc453349 784 auth_check_options(void)
ninoderkinderen 0:8d87bc453349 785 {
ninoderkinderen 0:8d87bc453349 786 lcp_options *wo = &lcp_wantoptions[0];
ninoderkinderen 0:8d87bc453349 787 int can_auth;
ninoderkinderen 0:8d87bc453349 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
ninoderkinderen 0:8d87bc453349 789 u32_t remote;
ninoderkinderen 0:8d87bc453349 790
ninoderkinderen 0:8d87bc453349 791 /* Default our_name to hostname, and user to our_name */
ninoderkinderen 0:8d87bc453349 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
ninoderkinderen 0:8d87bc453349 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
ninoderkinderen 0:8d87bc453349 794 }
ninoderkinderen 0:8d87bc453349 795
ninoderkinderen 0:8d87bc453349 796 if (ppp_settings.user[0] == 0) {
ninoderkinderen 0:8d87bc453349 797 strcpy(ppp_settings.user, ppp_settings.our_name);
ninoderkinderen 0:8d87bc453349 798 }
ninoderkinderen 0:8d87bc453349 799
ninoderkinderen 0:8d87bc453349 800 /* If authentication is required, ask peer for CHAP or PAP. */
ninoderkinderen 0:8d87bc453349 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
ninoderkinderen 0:8d87bc453349 802 wo->neg_chap = 1;
ninoderkinderen 0:8d87bc453349 803 wo->neg_upap = 1;
ninoderkinderen 0:8d87bc453349 804 }
ninoderkinderen 0:8d87bc453349 805
ninoderkinderen 0:8d87bc453349 806 /*
ninoderkinderen 0:8d87bc453349 807 * Check whether we have appropriate secrets to use
ninoderkinderen 0:8d87bc453349 808 * to authenticate the peer.
ninoderkinderen 0:8d87bc453349 809 */
ninoderkinderen 0:8d87bc453349 810 can_auth = wo->neg_upap && have_pap_secret();
ninoderkinderen 0:8d87bc453349 811 if (!can_auth && wo->neg_chap) {
ninoderkinderen 0:8d87bc453349 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
ninoderkinderen 0:8d87bc453349 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
ninoderkinderen 0:8d87bc453349 814 }
ninoderkinderen 0:8d87bc453349 815
ninoderkinderen 0:8d87bc453349 816 if (ppp_settings.auth_required && !can_auth) {
ninoderkinderen 0:8d87bc453349 817 ppp_panic("No auth secret");
ninoderkinderen 0:8d87bc453349 818 }
ninoderkinderen 0:8d87bc453349 819 }
ninoderkinderen 0:8d87bc453349 820 #endif /* UNUSED */
ninoderkinderen 0:8d87bc453349 821
ninoderkinderen 0:8d87bc453349 822 /*
ninoderkinderen 0:8d87bc453349 823 * auth_reset - called when LCP is starting negotiations to recheck
ninoderkinderen 0:8d87bc453349 824 * authentication options, i.e. whether we have appropriate secrets
ninoderkinderen 0:8d87bc453349 825 * to use for authenticating ourselves and/or the peer.
ninoderkinderen 0:8d87bc453349 826 */
ninoderkinderen 0:8d87bc453349 827 void
ninoderkinderen 0:8d87bc453349 828 auth_reset(int unit)
ninoderkinderen 0:8d87bc453349 829 {
ninoderkinderen 0:8d87bc453349 830 lcp_options *go = &lcp_gotoptions[unit];
ninoderkinderen 0:8d87bc453349 831 lcp_options *ao = &lcp_allowoptions[0];
ninoderkinderen 0:8d87bc453349 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
ninoderkinderen 0:8d87bc453349 833 u32_t remote;
ninoderkinderen 0:8d87bc453349 834
ninoderkinderen 0:8d87bc453349 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
ninoderkinderen 0:8d87bc453349 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
ninoderkinderen 0:8d87bc453349 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)*/;
ninoderkinderen 0:8d87bc453349 838
ninoderkinderen 0:8d87bc453349 839 if (go->neg_upap && !have_pap_secret()) {
ninoderkinderen 0:8d87bc453349 840 go->neg_upap = 0;
ninoderkinderen 0:8d87bc453349 841 }
ninoderkinderen 0:8d87bc453349 842 if (go->neg_chap) {
ninoderkinderen 0:8d87bc453349 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
ninoderkinderen 0:8d87bc453349 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
ninoderkinderen 0:8d87bc453349 845 go->neg_chap = 0;
ninoderkinderen 0:8d87bc453349 846 }
ninoderkinderen 0:8d87bc453349 847 }
ninoderkinderen 0:8d87bc453349 848 }
ninoderkinderen 0:8d87bc453349 849
ninoderkinderen 0:8d87bc453349 850 #if PAP_SUPPORT
ninoderkinderen 0:8d87bc453349 851 /*
ninoderkinderen 0:8d87bc453349 852 * check_passwd - Check the user name and passwd against the PAP secrets
ninoderkinderen 0:8d87bc453349 853 * file. If requested, also check against the system password database,
ninoderkinderen 0:8d87bc453349 854 * and login the user if OK.
ninoderkinderen 0:8d87bc453349 855 *
ninoderkinderen 0:8d87bc453349 856 * returns:
ninoderkinderen 0:8d87bc453349 857 * UPAP_AUTHNAK: Authentication failed.
ninoderkinderen 0:8d87bc453349 858 * UPAP_AUTHACK: Authentication succeeded.
ninoderkinderen 0:8d87bc453349 859 * In either case, msg points to an appropriate message.
ninoderkinderen 0:8d87bc453349 860 */
ninoderkinderen 0:8d87bc453349 861 u_char
ninoderkinderen 0:8d87bc453349 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
ninoderkinderen 0:8d87bc453349 863 {
ninoderkinderen 0:8d87bc453349 864 #if 1 /* XXX Assume all entries OK. */
ninoderkinderen 0:8d87bc453349 865 LWIP_UNUSED_ARG(unit);
ninoderkinderen 0:8d87bc453349 866 LWIP_UNUSED_ARG(auser);
ninoderkinderen 0:8d87bc453349 867 LWIP_UNUSED_ARG(userlen);
ninoderkinderen 0:8d87bc453349 868 LWIP_UNUSED_ARG(apasswd);
ninoderkinderen 0:8d87bc453349 869 LWIP_UNUSED_ARG(passwdlen);
ninoderkinderen 0:8d87bc453349 870 LWIP_UNUSED_ARG(msglen);
ninoderkinderen 0:8d87bc453349 871 *msg = (char *) 0;
ninoderkinderen 0:8d87bc453349 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
ninoderkinderen 0:8d87bc453349 873 #else
ninoderkinderen 0:8d87bc453349 874 u_char ret = 0;
ninoderkinderen 0:8d87bc453349 875 struct wordlist *addrs = NULL;
ninoderkinderen 0:8d87bc453349 876 char passwd[256], user[256];
ninoderkinderen 0:8d87bc453349 877 char secret[MAXWORDLEN];
ninoderkinderen 0:8d87bc453349 878 static u_short attempts = 0;
ninoderkinderen 0:8d87bc453349 879
ninoderkinderen 0:8d87bc453349 880 /*
ninoderkinderen 0:8d87bc453349 881 * Make copies of apasswd and auser, then null-terminate them.
ninoderkinderen 0:8d87bc453349 882 */
ninoderkinderen 0:8d87bc453349 883 BCOPY(apasswd, passwd, passwdlen);
ninoderkinderen 0:8d87bc453349 884 passwd[passwdlen] = '\0';
ninoderkinderen 0:8d87bc453349 885 BCOPY(auser, user, userlen);
ninoderkinderen 0:8d87bc453349 886 user[userlen] = '\0';
ninoderkinderen 0:8d87bc453349 887 *msg = (char *) 0;
ninoderkinderen 0:8d87bc453349 888
ninoderkinderen 0:8d87bc453349 889 /* XXX Validate user name and password. */
ninoderkinderen 0:8d87bc453349 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
ninoderkinderen 0:8d87bc453349 891
ninoderkinderen 0:8d87bc453349 892 if (ret == UPAP_AUTHNAK) {
ninoderkinderen 0:8d87bc453349 893 if (*msg == (char *) 0) {
ninoderkinderen 0:8d87bc453349 894 *msg = "Login incorrect";
ninoderkinderen 0:8d87bc453349 895 }
ninoderkinderen 0:8d87bc453349 896 *msglen = strlen(*msg);
ninoderkinderen 0:8d87bc453349 897 /*
ninoderkinderen 0:8d87bc453349 898 * Frustrate passwd stealer programs.
ninoderkinderen 0:8d87bc453349 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
ninoderkinderen 0:8d87bc453349 900 * On 10'th, drop the connection.
ninoderkinderen 0:8d87bc453349 901 */
ninoderkinderen 0:8d87bc453349 902 if (attempts++ >= 10) {
ninoderkinderen 0:8d87bc453349 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
ninoderkinderen 0:8d87bc453349 904 /*ppp_panic("Excess Bad Logins");*/
ninoderkinderen 0:8d87bc453349 905 }
ninoderkinderen 0:8d87bc453349 906 if (attempts > 3) {
ninoderkinderen 0:8d87bc453349 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
ninoderkinderen 0:8d87bc453349 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
ninoderkinderen 0:8d87bc453349 909 */
ninoderkinderen 0:8d87bc453349 910 /*sys_msleep((attempts - 3) * 5);*/
ninoderkinderen 0:8d87bc453349 911 }
ninoderkinderen 0:8d87bc453349 912 if (addrs != NULL) {
ninoderkinderen 0:8d87bc453349 913 free_wordlist(addrs);
ninoderkinderen 0:8d87bc453349 914 }
ninoderkinderen 0:8d87bc453349 915 } else {
ninoderkinderen 0:8d87bc453349 916 attempts = 0; /* Reset count */
ninoderkinderen 0:8d87bc453349 917 if (*msg == (char *) 0) {
ninoderkinderen 0:8d87bc453349 918 *msg = "Login ok";
ninoderkinderen 0:8d87bc453349 919 }
ninoderkinderen 0:8d87bc453349 920 *msglen = strlen(*msg);
ninoderkinderen 0:8d87bc453349 921 set_allowed_addrs(unit, addrs);
ninoderkinderen 0:8d87bc453349 922 }
ninoderkinderen 0:8d87bc453349 923
ninoderkinderen 0:8d87bc453349 924 BZERO(passwd, sizeof(passwd));
ninoderkinderen 0:8d87bc453349 925 BZERO(secret, sizeof(secret));
ninoderkinderen 0:8d87bc453349 926
ninoderkinderen 0:8d87bc453349 927 return ret;
ninoderkinderen 0:8d87bc453349 928 #endif
ninoderkinderen 0:8d87bc453349 929 }
ninoderkinderen 0:8d87bc453349 930 #endif /* PAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 931
ninoderkinderen 0:8d87bc453349 932 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 933 /*
ninoderkinderen 0:8d87bc453349 934 * This function is needed for PAM.
ninoderkinderen 0:8d87bc453349 935 */
ninoderkinderen 0:8d87bc453349 936
ninoderkinderen 0:8d87bc453349 937 #ifdef USE_PAM
ninoderkinderen 0:8d87bc453349 938
ninoderkinderen 0:8d87bc453349 939 /* lwip does not support PAM*/
ninoderkinderen 0:8d87bc453349 940
ninoderkinderen 0:8d87bc453349 941 #endif /* USE_PAM */
ninoderkinderen 0:8d87bc453349 942
ninoderkinderen 0:8d87bc453349 943 #endif /* UNUSED */
ninoderkinderen 0:8d87bc453349 944
ninoderkinderen 0:8d87bc453349 945
ninoderkinderen 0:8d87bc453349 946 #if 0 /* UNUSED */
ninoderkinderen 0:8d87bc453349 947 /*
ninoderkinderen 0:8d87bc453349 948 * plogin - Check the user name and password against the system
ninoderkinderen 0:8d87bc453349 949 * password database, and login the user if OK.
ninoderkinderen 0:8d87bc453349 950 *
ninoderkinderen 0:8d87bc453349 951 * returns:
ninoderkinderen 0:8d87bc453349 952 * UPAP_AUTHNAK: Login failed.
ninoderkinderen 0:8d87bc453349 953 * UPAP_AUTHACK: Login succeeded.
ninoderkinderen 0:8d87bc453349 954 * In either case, msg points to an appropriate message.
ninoderkinderen 0:8d87bc453349 955 */
ninoderkinderen 0:8d87bc453349 956 static int
ninoderkinderen 0:8d87bc453349 957 plogin(char *user, char *passwd, char **msg, int *msglen)
ninoderkinderen 0:8d87bc453349 958 {
ninoderkinderen 0:8d87bc453349 959
ninoderkinderen 0:8d87bc453349 960 LWIP_UNUSED_ARG(user);
ninoderkinderen 0:8d87bc453349 961 LWIP_UNUSED_ARG(passwd);
ninoderkinderen 0:8d87bc453349 962 LWIP_UNUSED_ARG(msg);
ninoderkinderen 0:8d87bc453349 963 LWIP_UNUSED_ARG(msglen);
ninoderkinderen 0:8d87bc453349 964
ninoderkinderen 0:8d87bc453349 965
ninoderkinderen 0:8d87bc453349 966 /* The new lines are here align the file when
ninoderkinderen 0:8d87bc453349 967 * compared against the pppd 2.3.11 code */
ninoderkinderen 0:8d87bc453349 968
ninoderkinderen 0:8d87bc453349 969
ninoderkinderen 0:8d87bc453349 970
ninoderkinderen 0:8d87bc453349 971
ninoderkinderen 0:8d87bc453349 972
ninoderkinderen 0:8d87bc453349 973
ninoderkinderen 0:8d87bc453349 974
ninoderkinderen 0:8d87bc453349 975
ninoderkinderen 0:8d87bc453349 976
ninoderkinderen 0:8d87bc453349 977
ninoderkinderen 0:8d87bc453349 978
ninoderkinderen 0:8d87bc453349 979
ninoderkinderen 0:8d87bc453349 980
ninoderkinderen 0:8d87bc453349 981
ninoderkinderen 0:8d87bc453349 982
ninoderkinderen 0:8d87bc453349 983
ninoderkinderen 0:8d87bc453349 984 /* XXX Fail until we decide that we want to support logins. */
ninoderkinderen 0:8d87bc453349 985 return (UPAP_AUTHNAK);
ninoderkinderen 0:8d87bc453349 986 }
ninoderkinderen 0:8d87bc453349 987 #endif
ninoderkinderen 0:8d87bc453349 988
ninoderkinderen 0:8d87bc453349 989
ninoderkinderen 0:8d87bc453349 990
ninoderkinderen 0:8d87bc453349 991 /*
ninoderkinderen 0:8d87bc453349 992 * plogout - Logout the user.
ninoderkinderen 0:8d87bc453349 993 */
ninoderkinderen 0:8d87bc453349 994 static void
ninoderkinderen 0:8d87bc453349 995 plogout(void)
ninoderkinderen 0:8d87bc453349 996 {
ninoderkinderen 0:8d87bc453349 997 logged_in = 0;
ninoderkinderen 0:8d87bc453349 998 }
ninoderkinderen 0:8d87bc453349 999
ninoderkinderen 0:8d87bc453349 1000 /*
ninoderkinderen 0:8d87bc453349 1001 * null_login - Check if a username of "" and a password of "" are
ninoderkinderen 0:8d87bc453349 1002 * acceptable, and iff so, set the list of acceptable IP addresses
ninoderkinderen 0:8d87bc453349 1003 * and return 1.
ninoderkinderen 0:8d87bc453349 1004 */
ninoderkinderen 0:8d87bc453349 1005 static int
ninoderkinderen 0:8d87bc453349 1006 null_login(int unit)
ninoderkinderen 0:8d87bc453349 1007 {
ninoderkinderen 0:8d87bc453349 1008 LWIP_UNUSED_ARG(unit);
ninoderkinderen 0:8d87bc453349 1009 /* XXX Fail until we decide that we want to support logins. */
ninoderkinderen 0:8d87bc453349 1010 return 0;
ninoderkinderen 0:8d87bc453349 1011 }
ninoderkinderen 0:8d87bc453349 1012
ninoderkinderen 0:8d87bc453349 1013
ninoderkinderen 0:8d87bc453349 1014 /*
ninoderkinderen 0:8d87bc453349 1015 * get_pap_passwd - get a password for authenticating ourselves with
ninoderkinderen 0:8d87bc453349 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
ninoderkinderen 0:8d87bc453349 1017 * could be found.
ninoderkinderen 0:8d87bc453349 1018 */
ninoderkinderen 0:8d87bc453349 1019 static int
ninoderkinderen 0:8d87bc453349 1020 get_pap_passwd(int unit, char *user, char *passwd)
ninoderkinderen 0:8d87bc453349 1021 {
ninoderkinderen 0:8d87bc453349 1022 LWIP_UNUSED_ARG(unit);
ninoderkinderen 0:8d87bc453349 1023 /* normally we would reject PAP if no password is provided,
ninoderkinderen 0:8d87bc453349 1024 but this causes problems with some providers (like CHT in Taiwan)
ninoderkinderen 0:8d87bc453349 1025 who incorrectly request PAP and expect a bogus/empty password, so
ninoderkinderen 0:8d87bc453349 1026 always provide a default user/passwd of "none"/"none"
ninoderkinderen 0:8d87bc453349 1027
ninoderkinderen 0:8d87bc453349 1028 @todo: This should be configured by the user, instead of being hardcoded here!
ninoderkinderen 0:8d87bc453349 1029 */
ninoderkinderen 0:8d87bc453349 1030 if(user) {
ninoderkinderen 0:8d87bc453349 1031 strcpy(user, "none");
ninoderkinderen 0:8d87bc453349 1032 }
ninoderkinderen 0:8d87bc453349 1033 if(passwd) {
ninoderkinderen 0:8d87bc453349 1034 strcpy(passwd, "none");
ninoderkinderen 0:8d87bc453349 1035 }
ninoderkinderen 0:8d87bc453349 1036 return 1;
ninoderkinderen 0:8d87bc453349 1037 }
ninoderkinderen 0:8d87bc453349 1038
ninoderkinderen 0:8d87bc453349 1039 /*
ninoderkinderen 0:8d87bc453349 1040 * have_pap_secret - check whether we have a PAP file with any
ninoderkinderen 0:8d87bc453349 1041 * secrets that we could possibly use for authenticating the peer.
ninoderkinderen 0:8d87bc453349 1042 */
ninoderkinderen 0:8d87bc453349 1043 static int
ninoderkinderen 0:8d87bc453349 1044 have_pap_secret(void)
ninoderkinderen 0:8d87bc453349 1045 {
ninoderkinderen 0:8d87bc453349 1046 /* XXX Fail until we set up our passwords. */
ninoderkinderen 0:8d87bc453349 1047 return 0;
ninoderkinderen 0:8d87bc453349 1048 }
ninoderkinderen 0:8d87bc453349 1049
ninoderkinderen 0:8d87bc453349 1050 /*
ninoderkinderen 0:8d87bc453349 1051 * have_chap_secret - check whether we have a CHAP file with a
ninoderkinderen 0:8d87bc453349 1052 * secret that we could possibly use for authenticating `client'
ninoderkinderen 0:8d87bc453349 1053 * on `server'. Either can be the null string, meaning we don't
ninoderkinderen 0:8d87bc453349 1054 * know the identity yet.
ninoderkinderen 0:8d87bc453349 1055 */
ninoderkinderen 0:8d87bc453349 1056 static int
ninoderkinderen 0:8d87bc453349 1057 have_chap_secret(char *client, char *server, u32_t remote)
ninoderkinderen 0:8d87bc453349 1058 {
ninoderkinderen 0:8d87bc453349 1059 LWIP_UNUSED_ARG(client);
ninoderkinderen 0:8d87bc453349 1060 LWIP_UNUSED_ARG(server);
ninoderkinderen 0:8d87bc453349 1061 LWIP_UNUSED_ARG(remote);
ninoderkinderen 0:8d87bc453349 1062
ninoderkinderen 0:8d87bc453349 1063 /* XXX Fail until we set up our passwords. */
ninoderkinderen 0:8d87bc453349 1064 return 0;
ninoderkinderen 0:8d87bc453349 1065 }
ninoderkinderen 0:8d87bc453349 1066 #if CHAP_SUPPORT
ninoderkinderen 0:8d87bc453349 1067
ninoderkinderen 0:8d87bc453349 1068 /*
ninoderkinderen 0:8d87bc453349 1069 * get_secret - open the CHAP secret file and return the secret
ninoderkinderen 0:8d87bc453349 1070 * for authenticating the given client on the given server.
ninoderkinderen 0:8d87bc453349 1071 * (We could be either client or server).
ninoderkinderen 0:8d87bc453349 1072 */
ninoderkinderen 0:8d87bc453349 1073 int
ninoderkinderen 0:8d87bc453349 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
ninoderkinderen 0:8d87bc453349 1075 {
ninoderkinderen 0:8d87bc453349 1076 #if 1
ninoderkinderen 0:8d87bc453349 1077 int len;
ninoderkinderen 0:8d87bc453349 1078 struct wordlist *addrs;
ninoderkinderen 0:8d87bc453349 1079
ninoderkinderen 0:8d87bc453349 1080 LWIP_UNUSED_ARG(unit);
ninoderkinderen 0:8d87bc453349 1081 LWIP_UNUSED_ARG(server);
ninoderkinderen 0:8d87bc453349 1082 LWIP_UNUSED_ARG(save_addrs);
ninoderkinderen 0:8d87bc453349 1083
ninoderkinderen 0:8d87bc453349 1084 addrs = NULL;
ninoderkinderen 0:8d87bc453349 1085
ninoderkinderen 0:8d87bc453349 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
ninoderkinderen 0:8d87bc453349 1087 return 0;
ninoderkinderen 0:8d87bc453349 1088 }
ninoderkinderen 0:8d87bc453349 1089
ninoderkinderen 0:8d87bc453349 1090 len = (int)strlen(ppp_settings.passwd);
ninoderkinderen 0:8d87bc453349 1091 if (len > MAXSECRETLEN) {
ninoderkinderen 0:8d87bc453349 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
ninoderkinderen 0:8d87bc453349 1093 len = MAXSECRETLEN;
ninoderkinderen 0:8d87bc453349 1094 }
ninoderkinderen 0:8d87bc453349 1095
ninoderkinderen 0:8d87bc453349 1096 BCOPY(ppp_settings.passwd, secret, len);
ninoderkinderen 0:8d87bc453349 1097 *secret_len = len;
ninoderkinderen 0:8d87bc453349 1098
ninoderkinderen 0:8d87bc453349 1099 return 1;
ninoderkinderen 0:8d87bc453349 1100 #else
ninoderkinderen 0:8d87bc453349 1101 int ret = 0, len;
ninoderkinderen 0:8d87bc453349 1102 struct wordlist *addrs;
ninoderkinderen 0:8d87bc453349 1103 char secbuf[MAXWORDLEN];
ninoderkinderen 0:8d87bc453349 1104
ninoderkinderen 0:8d87bc453349 1105 addrs = NULL;
ninoderkinderen 0:8d87bc453349 1106 secbuf[0] = 0;
ninoderkinderen 0:8d87bc453349 1107
ninoderkinderen 0:8d87bc453349 1108 /* XXX Find secret. */
ninoderkinderen 0:8d87bc453349 1109 if (ret < 0) {
ninoderkinderen 0:8d87bc453349 1110 return 0;
ninoderkinderen 0:8d87bc453349 1111 }
ninoderkinderen 0:8d87bc453349 1112
ninoderkinderen 0:8d87bc453349 1113 if (save_addrs) {
ninoderkinderen 0:8d87bc453349 1114 set_allowed_addrs(unit, addrs);
ninoderkinderen 0:8d87bc453349 1115 }
ninoderkinderen 0:8d87bc453349 1116
ninoderkinderen 0:8d87bc453349 1117 len = strlen(secbuf);
ninoderkinderen 0:8d87bc453349 1118 if (len > MAXSECRETLEN) {
ninoderkinderen 0:8d87bc453349 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
ninoderkinderen 0:8d87bc453349 1120 len = MAXSECRETLEN;
ninoderkinderen 0:8d87bc453349 1121 }
ninoderkinderen 0:8d87bc453349 1122
ninoderkinderen 0:8d87bc453349 1123 BCOPY(secbuf, secret, len);
ninoderkinderen 0:8d87bc453349 1124 BZERO(secbuf, sizeof(secbuf));
ninoderkinderen 0:8d87bc453349 1125 *secret_len = len;
ninoderkinderen 0:8d87bc453349 1126
ninoderkinderen 0:8d87bc453349 1127 return 1;
ninoderkinderen 0:8d87bc453349 1128 #endif
ninoderkinderen 0:8d87bc453349 1129 }
ninoderkinderen 0:8d87bc453349 1130 #endif /* CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 1131
ninoderkinderen 0:8d87bc453349 1132
ninoderkinderen 0:8d87bc453349 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 1134 /*
ninoderkinderen 0:8d87bc453349 1135 * set_allowed_addrs() - set the list of allowed addresses.
ninoderkinderen 0:8d87bc453349 1136 */
ninoderkinderen 0:8d87bc453349 1137 static void
ninoderkinderen 0:8d87bc453349 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
ninoderkinderen 0:8d87bc453349 1139 {
ninoderkinderen 0:8d87bc453349 1140 if (addresses[unit] != NULL) {
ninoderkinderen 0:8d87bc453349 1141 free_wordlist(addresses[unit]);
ninoderkinderen 0:8d87bc453349 1142 }
ninoderkinderen 0:8d87bc453349 1143 addresses[unit] = addrs;
ninoderkinderen 0:8d87bc453349 1144
ninoderkinderen 0:8d87bc453349 1145 #if 0
ninoderkinderen 0:8d87bc453349 1146 /*
ninoderkinderen 0:8d87bc453349 1147 * If there's only one authorized address we might as well
ninoderkinderen 0:8d87bc453349 1148 * ask our peer for that one right away
ninoderkinderen 0:8d87bc453349 1149 */
ninoderkinderen 0:8d87bc453349 1150 if (addrs != NULL && addrs->next == NULL) {
ninoderkinderen 0:8d87bc453349 1151 char *p = addrs->word;
ninoderkinderen 0:8d87bc453349 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
ninoderkinderen 0:8d87bc453349 1153 u32_t a;
ninoderkinderen 0:8d87bc453349 1154 struct hostent *hp;
ninoderkinderen 0:8d87bc453349 1155
ninoderkinderen 0:8d87bc453349 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
ninoderkinderen 0:8d87bc453349 1157 hp = gethostbyname(p);
ninoderkinderen 0:8d87bc453349 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
ninoderkinderen 0:8d87bc453349 1159 a = *(u32_t *)hp->h_addr;
ninoderkinderen 0:8d87bc453349 1160 } else {
ninoderkinderen 0:8d87bc453349 1161 a = inet_addr(p);
ninoderkinderen 0:8d87bc453349 1162 }
ninoderkinderen 0:8d87bc453349 1163 if (a != (u32_t) -1) {
ninoderkinderen 0:8d87bc453349 1164 wo->hisaddr = a;
ninoderkinderen 0:8d87bc453349 1165 }
ninoderkinderen 0:8d87bc453349 1166 }
ninoderkinderen 0:8d87bc453349 1167 }
ninoderkinderen 0:8d87bc453349 1168 #endif
ninoderkinderen 0:8d87bc453349 1169 }
ninoderkinderen 0:8d87bc453349 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 1171
ninoderkinderen 0:8d87bc453349 1172 /*
ninoderkinderen 0:8d87bc453349 1173 * auth_ip_addr - check whether the peer is authorized to use
ninoderkinderen 0:8d87bc453349 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
ninoderkinderen 0:8d87bc453349 1175 */
ninoderkinderen 0:8d87bc453349 1176 int
ninoderkinderen 0:8d87bc453349 1177 auth_ip_addr(int unit, u32_t addr)
ninoderkinderen 0:8d87bc453349 1178 {
ninoderkinderen 0:8d87bc453349 1179 return ip_addr_check(addr, addresses[unit]);
ninoderkinderen 0:8d87bc453349 1180 }
ninoderkinderen 0:8d87bc453349 1181
ninoderkinderen 0:8d87bc453349 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
ninoderkinderen 0:8d87bc453349 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
ninoderkinderen 0:8d87bc453349 1184 {
ninoderkinderen 0:8d87bc453349 1185 /* don't allow loopback or multicast address */
ninoderkinderen 0:8d87bc453349 1186 if (bad_ip_adrs(addr)) {
ninoderkinderen 0:8d87bc453349 1187 return 0;
ninoderkinderen 0:8d87bc453349 1188 }
ninoderkinderen 0:8d87bc453349 1189
ninoderkinderen 0:8d87bc453349 1190 if (addrs == NULL) {
ninoderkinderen 0:8d87bc453349 1191 return !ppp_settings.auth_required; /* no addresses authorized */
ninoderkinderen 0:8d87bc453349 1192 }
ninoderkinderen 0:8d87bc453349 1193
ninoderkinderen 0:8d87bc453349 1194 /* XXX All other addresses allowed. */
ninoderkinderen 0:8d87bc453349 1195 return 1;
ninoderkinderen 0:8d87bc453349 1196 }
ninoderkinderen 0:8d87bc453349 1197
ninoderkinderen 0:8d87bc453349 1198 /*
ninoderkinderen 0:8d87bc453349 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
ninoderkinderen 0:8d87bc453349 1200 * to use, such as an address in the loopback net or a multicast address.
ninoderkinderen 0:8d87bc453349 1201 * addr is in network byte order.
ninoderkinderen 0:8d87bc453349 1202 */
ninoderkinderen 0:8d87bc453349 1203 int
ninoderkinderen 0:8d87bc453349 1204 bad_ip_adrs(u32_t addr)
ninoderkinderen 0:8d87bc453349 1205 {
ninoderkinderen 0:8d87bc453349 1206 addr = ntohl(addr);
ninoderkinderen 0:8d87bc453349 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
ninoderkinderen 0:8d87bc453349 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
ninoderkinderen 0:8d87bc453349 1209 }
ninoderkinderen 0:8d87bc453349 1210
ninoderkinderen 0:8d87bc453349 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 1212 /*
ninoderkinderen 0:8d87bc453349 1213 * some_ip_ok - check a wordlist to see if it authorizes any
ninoderkinderen 0:8d87bc453349 1214 * IP address(es).
ninoderkinderen 0:8d87bc453349 1215 */
ninoderkinderen 0:8d87bc453349 1216 static int
ninoderkinderen 0:8d87bc453349 1217 some_ip_ok(struct wordlist *addrs)
ninoderkinderen 0:8d87bc453349 1218 {
ninoderkinderen 0:8d87bc453349 1219 for (; addrs != 0; addrs = addrs->next) {
ninoderkinderen 0:8d87bc453349 1220 if (addrs->word[0] == '-')
ninoderkinderen 0:8d87bc453349 1221 break;
ninoderkinderen 0:8d87bc453349 1222 if (addrs->word[0] != '!')
ninoderkinderen 0:8d87bc453349 1223 return 1; /* some IP address is allowed */
ninoderkinderen 0:8d87bc453349 1224 }
ninoderkinderen 0:8d87bc453349 1225 return 0;
ninoderkinderen 0:8d87bc453349 1226 }
ninoderkinderen 0:8d87bc453349 1227
ninoderkinderen 0:8d87bc453349 1228 /*
ninoderkinderen 0:8d87bc453349 1229 * check_access - complain if a secret file has too-liberal permissions.
ninoderkinderen 0:8d87bc453349 1230 */
ninoderkinderen 0:8d87bc453349 1231 static void
ninoderkinderen 0:8d87bc453349 1232 check_access(FILE *f, char *filename)
ninoderkinderen 0:8d87bc453349 1233 {
ninoderkinderen 0:8d87bc453349 1234 struct stat sbuf;
ninoderkinderen 0:8d87bc453349 1235
ninoderkinderen 0:8d87bc453349 1236 if (fstat(fileno(f), &sbuf) < 0) {
ninoderkinderen 0:8d87bc453349 1237 warn("cannot stat secret file %s: %m", filename);
ninoderkinderen 0:8d87bc453349 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
ninoderkinderen 0:8d87bc453349 1239 warn("Warning - secret file %s has world and/or group access",
ninoderkinderen 0:8d87bc453349 1240 filename);
ninoderkinderen 0:8d87bc453349 1241 }
ninoderkinderen 0:8d87bc453349 1242 }
ninoderkinderen 0:8d87bc453349 1243
ninoderkinderen 0:8d87bc453349 1244
ninoderkinderen 0:8d87bc453349 1245 /*
ninoderkinderen 0:8d87bc453349 1246 * scan_authfile - Scan an authorization file for a secret suitable
ninoderkinderen 0:8d87bc453349 1247 * for authenticating `client' on `server'. The return value is -1
ninoderkinderen 0:8d87bc453349 1248 * if no secret is found, otherwise >= 0. The return value has
ninoderkinderen 0:8d87bc453349 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
ninoderkinderen 0:8d87bc453349 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
ninoderkinderen 0:8d87bc453349 1251 * Any following words on the line up to a "--" (i.e. address authorization
ninoderkinderen 0:8d87bc453349 1252 * info) are placed in a wordlist and returned in *addrs. Any
ninoderkinderen 0:8d87bc453349 1253 * following words (extra options) are placed in a wordlist and
ninoderkinderen 0:8d87bc453349 1254 * returned in *opts.
ninoderkinderen 0:8d87bc453349 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
ninoderkinderen 0:8d87bc453349 1256 */
ninoderkinderen 0:8d87bc453349 1257 static int
ninoderkinderen 0:8d87bc453349 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
ninoderkinderen 0:8d87bc453349 1259 {
ninoderkinderen 0:8d87bc453349 1260 /* We do not (currently) need this in lwip */
ninoderkinderen 0:8d87bc453349 1261 return 0; /* dummy */
ninoderkinderen 0:8d87bc453349 1262 }
ninoderkinderen 0:8d87bc453349 1263 /*
ninoderkinderen 0:8d87bc453349 1264 * free_wordlist - release memory allocated for a wordlist.
ninoderkinderen 0:8d87bc453349 1265 */
ninoderkinderen 0:8d87bc453349 1266 static void
ninoderkinderen 0:8d87bc453349 1267 free_wordlist(struct wordlist *wp)
ninoderkinderen 0:8d87bc453349 1268 {
ninoderkinderen 0:8d87bc453349 1269 struct wordlist *next;
ninoderkinderen 0:8d87bc453349 1270
ninoderkinderen 0:8d87bc453349 1271 while (wp != NULL) {
ninoderkinderen 0:8d87bc453349 1272 next = wp->next;
ninoderkinderen 0:8d87bc453349 1273 free(wp);
ninoderkinderen 0:8d87bc453349 1274 wp = next;
ninoderkinderen 0:8d87bc453349 1275 }
ninoderkinderen 0:8d87bc453349 1276 }
ninoderkinderen 0:8d87bc453349 1277
ninoderkinderen 0:8d87bc453349 1278 /*
ninoderkinderen 0:8d87bc453349 1279 * auth_script_done - called when the auth-up or auth-down script
ninoderkinderen 0:8d87bc453349 1280 * has finished.
ninoderkinderen 0:8d87bc453349 1281 */
ninoderkinderen 0:8d87bc453349 1282 static void
ninoderkinderen 0:8d87bc453349 1283 auth_script_done(void *arg)
ninoderkinderen 0:8d87bc453349 1284 {
ninoderkinderen 0:8d87bc453349 1285 auth_script_pid = 0;
ninoderkinderen 0:8d87bc453349 1286 switch (auth_script_state) {
ninoderkinderen 0:8d87bc453349 1287 case s_up:
ninoderkinderen 0:8d87bc453349 1288 if (auth_state == s_down) {
ninoderkinderen 0:8d87bc453349 1289 auth_script_state = s_down;
ninoderkinderen 0:8d87bc453349 1290 auth_script(_PATH_AUTHDOWN);
ninoderkinderen 0:8d87bc453349 1291 }
ninoderkinderen 0:8d87bc453349 1292 break;
ninoderkinderen 0:8d87bc453349 1293 case s_down:
ninoderkinderen 0:8d87bc453349 1294 if (auth_state == s_up) {
ninoderkinderen 0:8d87bc453349 1295 auth_script_state = s_up;
ninoderkinderen 0:8d87bc453349 1296 auth_script(_PATH_AUTHUP);
ninoderkinderen 0:8d87bc453349 1297 }
ninoderkinderen 0:8d87bc453349 1298 break;
ninoderkinderen 0:8d87bc453349 1299 }
ninoderkinderen 0:8d87bc453349 1300 }
ninoderkinderen 0:8d87bc453349 1301
ninoderkinderen 0:8d87bc453349 1302 /*
ninoderkinderen 0:8d87bc453349 1303 * auth_script - execute a script with arguments
ninoderkinderen 0:8d87bc453349 1304 * interface-name peer-name real-user tty speed
ninoderkinderen 0:8d87bc453349 1305 */
ninoderkinderen 0:8d87bc453349 1306 static void
ninoderkinderen 0:8d87bc453349 1307 auth_script(char *script)
ninoderkinderen 0:8d87bc453349 1308 {
ninoderkinderen 0:8d87bc453349 1309 char strspeed[32];
ninoderkinderen 0:8d87bc453349 1310 struct passwd *pw;
ninoderkinderen 0:8d87bc453349 1311 char struid[32];
ninoderkinderen 0:8d87bc453349 1312 char *user_name;
ninoderkinderen 0:8d87bc453349 1313 char *argv[8];
ninoderkinderen 0:8d87bc453349 1314
ninoderkinderen 0:8d87bc453349 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
ninoderkinderen 0:8d87bc453349 1316 user_name = pw->pw_name;
ninoderkinderen 0:8d87bc453349 1317 else {
ninoderkinderen 0:8d87bc453349 1318 slprintf(struid, sizeof(struid), "%d", getuid());
ninoderkinderen 0:8d87bc453349 1319 user_name = struid;
ninoderkinderen 0:8d87bc453349 1320 }
ninoderkinderen 0:8d87bc453349 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
ninoderkinderen 0:8d87bc453349 1322
ninoderkinderen 0:8d87bc453349 1323 argv[0] = script;
ninoderkinderen 0:8d87bc453349 1324 argv[1] = ifname;
ninoderkinderen 0:8d87bc453349 1325 argv[2] = peer_authname;
ninoderkinderen 0:8d87bc453349 1326 argv[3] = user_name;
ninoderkinderen 0:8d87bc453349 1327 argv[4] = devnam;
ninoderkinderen 0:8d87bc453349 1328 argv[5] = strspeed;
ninoderkinderen 0:8d87bc453349 1329 argv[6] = NULL;
ninoderkinderen 0:8d87bc453349 1330
ninoderkinderen 0:8d87bc453349 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
ninoderkinderen 0:8d87bc453349 1332 }
ninoderkinderen 0:8d87bc453349 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 1334 #endif /* PPP_SUPPORT */