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Dependencies:   mbed

NetServices/lwip/netif/ppp/auth.c@1:f5ac63519541, 2014-03-05 (annotated)

Committer:
Michael J. Spencer
Date:
Wed Mar 05 06:14:02 2014 -0800
Revision:
1:f5ac63519541
Initial commit.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Michael J. Spencer 1:f5ac63519541 1 /*****************************************************************************
Michael J. Spencer 1:f5ac63519541 2 * auth.c - Network Authentication and Phase Control program file.
Michael J. Spencer 1:f5ac63519541 3 *
Michael J. Spencer 1:f5ac63519541 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
Michael J. Spencer 1:f5ac63519541 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
Michael J. Spencer 1:f5ac63519541 6 *
Michael J. Spencer 1:f5ac63519541 7 * The authors hereby grant permission to use, copy, modify, distribute,
Michael J. Spencer 1:f5ac63519541 8 * and license this software and its documentation for any purpose, provided
Michael J. Spencer 1:f5ac63519541 9 * that existing copyright notices are retained in all copies and that this
Michael J. Spencer 1:f5ac63519541 10 * notice and the following disclaimer are included verbatim in any
Michael J. Spencer 1:f5ac63519541 11 * distributions. No written agreement, license, or royalty fee is required
Michael J. Spencer 1:f5ac63519541 12 * for any of the authorized uses.
Michael J. Spencer 1:f5ac63519541 13 *
Michael J. Spencer 1:f5ac63519541 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
Michael J. Spencer 1:f5ac63519541 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
Michael J. Spencer 1:f5ac63519541 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
Michael J. Spencer 1:f5ac63519541 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
Michael J. Spencer 1:f5ac63519541 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
Michael J. Spencer 1:f5ac63519541 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Michael J. Spencer 1:f5ac63519541 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Michael J. Spencer 1:f5ac63519541 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Michael J. Spencer 1:f5ac63519541 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
Michael J. Spencer 1:f5ac63519541 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Michael J. Spencer 1:f5ac63519541 24 *
Michael J. Spencer 1:f5ac63519541 25 ******************************************************************************
Michael J. Spencer 1:f5ac63519541 26 * REVISION HISTORY
Michael J. Spencer 1:f5ac63519541 27 *
Michael J. Spencer 1:f5ac63519541 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
Michael J. Spencer 1:f5ac63519541 29 * Ported to lwIP.
Michael J. Spencer 1:f5ac63519541 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
Michael J. Spencer 1:f5ac63519541 31 * Ported from public pppd code.
Michael J. Spencer 1:f5ac63519541 32 *****************************************************************************/
Michael J. Spencer 1:f5ac63519541 33 /*
Michael J. Spencer 1:f5ac63519541 34 * auth.c - PPP authentication and phase control.
Michael J. Spencer 1:f5ac63519541 35 *
Michael J. Spencer 1:f5ac63519541 36 * Copyright (c) 1993 The Australian National University.
Michael J. Spencer 1:f5ac63519541 37 * All rights reserved.
Michael J. Spencer 1:f5ac63519541 38 *
Michael J. Spencer 1:f5ac63519541 39 * Redistribution and use in source and binary forms are permitted
Michael J. Spencer 1:f5ac63519541 40 * provided that the above copyright notice and this paragraph are
Michael J. Spencer 1:f5ac63519541 41 * duplicated in all such forms and that any documentation,
Michael J. Spencer 1:f5ac63519541 42 * advertising materials, and other materials related to such
Michael J. Spencer 1:f5ac63519541 43 * distribution and use acknowledge that the software was developed
Michael J. Spencer 1:f5ac63519541 44 * by the Australian National University. The name of the University
Michael J. Spencer 1:f5ac63519541 45 * may not be used to endorse or promote products derived from this
Michael J. Spencer 1:f5ac63519541 46 * software without specific prior written permission.
Michael J. Spencer 1:f5ac63519541 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
Michael J. Spencer 1:f5ac63519541 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
Michael J. Spencer 1:f5ac63519541 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Michael J. Spencer 1:f5ac63519541 50 *
Michael J. Spencer 1:f5ac63519541 51 * Copyright (c) 1989 Carnegie Mellon University.
Michael J. Spencer 1:f5ac63519541 52 * All rights reserved.
Michael J. Spencer 1:f5ac63519541 53 *
Michael J. Spencer 1:f5ac63519541 54 * Redistribution and use in source and binary forms are permitted
Michael J. Spencer 1:f5ac63519541 55 * provided that the above copyright notice and this paragraph are
Michael J. Spencer 1:f5ac63519541 56 * duplicated in all such forms and that any documentation,
Michael J. Spencer 1:f5ac63519541 57 * advertising materials, and other materials related to such
Michael J. Spencer 1:f5ac63519541 58 * distribution and use acknowledge that the software was developed
Michael J. Spencer 1:f5ac63519541 59 * by Carnegie Mellon University. The name of the
Michael J. Spencer 1:f5ac63519541 60 * University may not be used to endorse or promote products derived
Michael J. Spencer 1:f5ac63519541 61 * from this software without specific prior written permission.
Michael J. Spencer 1:f5ac63519541 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
Michael J. Spencer 1:f5ac63519541 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
Michael J. Spencer 1:f5ac63519541 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Michael J. Spencer 1:f5ac63519541 65 */
Michael J. Spencer 1:f5ac63519541 66
Michael J. Spencer 1:f5ac63519541 67 #include "lwip/opt.h"
Michael J. Spencer 1:f5ac63519541 68
Michael J. Spencer 1:f5ac63519541 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
Michael J. Spencer 1:f5ac63519541 70
Michael J. Spencer 1:f5ac63519541 71 #include "ppp.h"
Michael J. Spencer 1:f5ac63519541 72 #include "pppdebug.h"
Michael J. Spencer 1:f5ac63519541 73
Michael J. Spencer 1:f5ac63519541 74 #include "fsm.h"
Michael J. Spencer 1:f5ac63519541 75 #include "lcp.h"
Michael J. Spencer 1:f5ac63519541 76 #include "pap.h"
Michael J. Spencer 1:f5ac63519541 77 #include "chap.h"
Michael J. Spencer 1:f5ac63519541 78 #include "auth.h"
Michael J. Spencer 1:f5ac63519541 79 #include "ipcp.h"
Michael J. Spencer 1:f5ac63519541 80
Michael J. Spencer 1:f5ac63519541 81 #if CBCP_SUPPORT
Michael J. Spencer 1:f5ac63519541 82 #include "cbcp.h"
Michael J. Spencer 1:f5ac63519541 83 #endif /* CBCP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 84
Michael J. Spencer 1:f5ac63519541 85 #include "lwip/inet.h"
Michael J. Spencer 1:f5ac63519541 86
Michael J. Spencer 1:f5ac63519541 87 #include <string.h>
Michael J. Spencer 1:f5ac63519541 88
Michael J. Spencer 1:f5ac63519541 89 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 90 /* Bits in scan_authfile return value */
Michael J. Spencer 1:f5ac63519541 91 #define NONWILD_SERVER 1
Michael J. Spencer 1:f5ac63519541 92 #define NONWILD_CLIENT 2
Michael J. Spencer 1:f5ac63519541 93
Michael J. Spencer 1:f5ac63519541 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
Michael J. Spencer 1:f5ac63519541 95 #endif /* UNUSED */
Michael J. Spencer 1:f5ac63519541 96
Michael J. Spencer 1:f5ac63519541 97 #if PAP_SUPPORT || CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 98 /* The name by which the peer authenticated itself to us. */
Michael J. Spencer 1:f5ac63519541 99 static char peer_authname[MAXNAMELEN];
Michael J. Spencer 1:f5ac63519541 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 101
Michael J. Spencer 1:f5ac63519541 102 /* Records which authentication operations haven't completed yet. */
Michael J. Spencer 1:f5ac63519541 103 static int auth_pending[NUM_PPP];
Michael J. Spencer 1:f5ac63519541 104
Michael J. Spencer 1:f5ac63519541 105 /* Set if we have successfully called plogin() */
Michael J. Spencer 1:f5ac63519541 106 static int logged_in;
Michael J. Spencer 1:f5ac63519541 107
Michael J. Spencer 1:f5ac63519541 108 /* Set if we have run the /etc/ppp/auth-up script. */
Michael J. Spencer 1:f5ac63519541 109 static int did_authup; /* @todo, we don't need this in lwip*/
Michael J. Spencer 1:f5ac63519541 110
Michael J. Spencer 1:f5ac63519541 111 /* List of addresses which the peer may use. */
Michael J. Spencer 1:f5ac63519541 112 static struct wordlist *addresses[NUM_PPP];
Michael J. Spencer 1:f5ac63519541 113
Michael J. Spencer 1:f5ac63519541 114 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 115 /* Wordlist giving addresses which the peer may use
Michael J. Spencer 1:f5ac63519541 116 without authenticating itself. */
Michael J. Spencer 1:f5ac63519541 117 static struct wordlist *noauth_addrs;
Michael J. Spencer 1:f5ac63519541 118
Michael J. Spencer 1:f5ac63519541 119 /* Extra options to apply, from the secrets file entry for the peer. */
Michael J. Spencer 1:f5ac63519541 120 static struct wordlist *extra_options;
Michael J. Spencer 1:f5ac63519541 121 #endif /* UNUSED */
Michael J. Spencer 1:f5ac63519541 122
Michael J. Spencer 1:f5ac63519541 123 /* Number of network protocols which we have opened. */
Michael J. Spencer 1:f5ac63519541 124 static int num_np_open;
Michael J. Spencer 1:f5ac63519541 125
Michael J. Spencer 1:f5ac63519541 126 /* Number of network protocols which have come up. */
Michael J. Spencer 1:f5ac63519541 127 static int num_np_up;
Michael J. Spencer 1:f5ac63519541 128
Michael J. Spencer 1:f5ac63519541 129 #if PAP_SUPPORT || CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
Michael J. Spencer 1:f5ac63519541 131 static int passwd_from_file;
Michael J. Spencer 1:f5ac63519541 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 133
Michael J. Spencer 1:f5ac63519541 134 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 135 /* Set if we require authentication only because we have a default route. */
Michael J. Spencer 1:f5ac63519541 136 static bool default_auth;
Michael J. Spencer 1:f5ac63519541 137
Michael J. Spencer 1:f5ac63519541 138 /* Hook to enable a plugin to control the idle time limit */
Michael J. Spencer 1:f5ac63519541 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
Michael J. Spencer 1:f5ac63519541 140
Michael J. Spencer 1:f5ac63519541 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
Michael J. Spencer 1:f5ac63519541 142 int (*pap_check_hook) __P((void)) = NULL;
Michael J. Spencer 1:f5ac63519541 143
Michael J. Spencer 1:f5ac63519541 144 /* Hook for a plugin to check the PAP user and password */
Michael J. Spencer 1:f5ac63519541 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
Michael J. Spencer 1:f5ac63519541 146 struct wordlist **paddrs,
Michael J. Spencer 1:f5ac63519541 147 struct wordlist **popts)) = NULL;
Michael J. Spencer 1:f5ac63519541 148
Michael J. Spencer 1:f5ac63519541 149 /* Hook for a plugin to know about the PAP user logout */
Michael J. Spencer 1:f5ac63519541 150 void (*pap_logout_hook) __P((void)) = NULL;
Michael J. Spencer 1:f5ac63519541 151
Michael J. Spencer 1:f5ac63519541 152 /* Hook for a plugin to get the PAP password for authenticating us */
Michael J. Spencer 1:f5ac63519541 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
Michael J. Spencer 1:f5ac63519541 154
Michael J. Spencer 1:f5ac63519541 155 /*
Michael J. Spencer 1:f5ac63519541 156 * This is used to ensure that we don't start an auth-up/down
Michael J. Spencer 1:f5ac63519541 157 * script while one is already running.
Michael J. Spencer 1:f5ac63519541 158 */
Michael J. Spencer 1:f5ac63519541 159 enum script_state {
Michael J. Spencer 1:f5ac63519541 160 s_down,
Michael J. Spencer 1:f5ac63519541 161 s_up
Michael J. Spencer 1:f5ac63519541 162 };
Michael J. Spencer 1:f5ac63519541 163
Michael J. Spencer 1:f5ac63519541 164 static enum script_state auth_state = s_down;
Michael J. Spencer 1:f5ac63519541 165 static enum script_state auth_script_state = s_down;
Michael J. Spencer 1:f5ac63519541 166 static pid_t auth_script_pid = 0;
Michael J. Spencer 1:f5ac63519541 167
Michael J. Spencer 1:f5ac63519541 168 /*
Michael J. Spencer 1:f5ac63519541 169 * Option variables.
Michael J. Spencer 1:f5ac63519541 170 * lwip: some of these are present in the ppp_settings structure
Michael J. Spencer 1:f5ac63519541 171 */
Michael J. Spencer 1:f5ac63519541 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
Michael J. Spencer 1:f5ac63519541 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
Michael J. Spencer 1:f5ac63519541 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
Michael J. Spencer 1:f5ac63519541 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
Michael J. Spencer 1:f5ac63519541 176 bool usehostname = 0; /* Use hostname for our_name */
Michael J. Spencer 1:f5ac63519541 177 bool auth_required = 0; /* Always require authentication from peer */
Michael J. Spencer 1:f5ac63519541 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
Michael J. Spencer 1:f5ac63519541 179 bool explicit_remote = 0; /* User specified explicit remote name */
Michael J. Spencer 1:f5ac63519541 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
Michael J. Spencer 1:f5ac63519541 181
Michael J. Spencer 1:f5ac63519541 182 #endif /* UNUSED */
Michael J. Spencer 1:f5ac63519541 183
Michael J. Spencer 1:f5ac63519541 184 /* Bits in auth_pending[] */
Michael J. Spencer 1:f5ac63519541 185 #define PAP_WITHPEER 1
Michael J. Spencer 1:f5ac63519541 186 #define PAP_PEER 2
Michael J. Spencer 1:f5ac63519541 187 #define CHAP_WITHPEER 4
Michael J. Spencer 1:f5ac63519541 188 #define CHAP_PEER 8
Michael J. Spencer 1:f5ac63519541 189
Michael J. Spencer 1:f5ac63519541 190 /* @todo, move this somewhere */
Michael J. Spencer 1:f5ac63519541 191 /* Used for storing a sequence of words. Usually malloced. */
Michael J. Spencer 1:f5ac63519541 192 struct wordlist {
Michael J. Spencer 1:f5ac63519541 193 struct wordlist *next;
Michael J. Spencer 1:f5ac63519541 194 char word[1];
Michael J. Spencer 1:f5ac63519541 195 };
Michael J. Spencer 1:f5ac63519541 196
Michael J. Spencer 1:f5ac63519541 197
Michael J. Spencer 1:f5ac63519541 198 extern char *crypt (const char *, const char *);
Michael J. Spencer 1:f5ac63519541 199
Michael J. Spencer 1:f5ac63519541 200 /* Prototypes for procedures local to this file. */
Michael J. Spencer 1:f5ac63519541 201
Michael J. Spencer 1:f5ac63519541 202 static void network_phase (int);
Michael J. Spencer 1:f5ac63519541 203 static void check_idle (void *);
Michael J. Spencer 1:f5ac63519541 204 static void connect_time_expired (void *);
Michael J. Spencer 1:f5ac63519541 205 #if 0
Michael J. Spencer 1:f5ac63519541 206 static int plogin (char *, char *, char **, int *);
Michael J. Spencer 1:f5ac63519541 207 #endif
Michael J. Spencer 1:f5ac63519541 208 static void plogout (void);
Michael J. Spencer 1:f5ac63519541 209 static int null_login (int);
Michael J. Spencer 1:f5ac63519541 210 static int get_pap_passwd (int, char *, char *);
Michael J. Spencer 1:f5ac63519541 211 static int have_pap_secret (void);
Michael J. Spencer 1:f5ac63519541 212 static int have_chap_secret (char *, char *, u32_t);
Michael J. Spencer 1:f5ac63519541 213 static int ip_addr_check (u32_t, struct wordlist *);
Michael J. Spencer 1:f5ac63519541 214
Michael J. Spencer 1:f5ac63519541 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 216 static int scan_authfile (FILE *, char *, char *, char *,
Michael J. Spencer 1:f5ac63519541 217 struct wordlist **, struct wordlist **,
Michael J. Spencer 1:f5ac63519541 218 char *);
Michael J. Spencer 1:f5ac63519541 219 static void free_wordlist (struct wordlist *);
Michael J. Spencer 1:f5ac63519541 220 static void auth_script (char *);
Michael J. Spencer 1:f5ac63519541 221 static void auth_script_done (void *);
Michael J. Spencer 1:f5ac63519541 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
Michael J. Spencer 1:f5ac63519541 223 static int some_ip_ok (struct wordlist *);
Michael J. Spencer 1:f5ac63519541 224 static int setupapfile (char **);
Michael J. Spencer 1:f5ac63519541 225 static int privgroup (char **);
Michael J. Spencer 1:f5ac63519541 226 static int set_noauth_addr (char **);
Michael J. Spencer 1:f5ac63519541 227 static void check_access (FILE *, char *);
Michael J. Spencer 1:f5ac63519541 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 229
Michael J. Spencer 1:f5ac63519541 230 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 231 /*
Michael J. Spencer 1:f5ac63519541 232 * Authentication-related options.
Michael J. Spencer 1:f5ac63519541 233 */
Michael J. Spencer 1:f5ac63519541 234 option_t auth_options[] = {
Michael J. Spencer 1:f5ac63519541 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
Michael J. Spencer 1:f5ac63519541 236 "Require PAP authentication from peer", 1, &auth_required },
Michael J. Spencer 1:f5ac63519541 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
Michael J. Spencer 1:f5ac63519541 238 "Require PAP authentication from peer", 1, &auth_required },
Michael J. Spencer 1:f5ac63519541 239 { "refuse-pap", o_bool, &refuse_pap,
Michael J. Spencer 1:f5ac63519541 240 "Don't agree to auth to peer with PAP", 1 },
Michael J. Spencer 1:f5ac63519541 241 { "-pap", o_bool, &refuse_pap,
Michael J. Spencer 1:f5ac63519541 242 "Don't allow PAP authentication with peer", 1 },
Michael J. Spencer 1:f5ac63519541 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
Michael J. Spencer 1:f5ac63519541 244 "Require CHAP authentication from peer", 1, &auth_required },
Michael J. Spencer 1:f5ac63519541 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
Michael J. Spencer 1:f5ac63519541 246 "Require CHAP authentication from peer", 1, &auth_required },
Michael J. Spencer 1:f5ac63519541 247 { "refuse-chap", o_bool, &refuse_chap,
Michael J. Spencer 1:f5ac63519541 248 "Don't agree to auth to peer with CHAP", 1 },
Michael J. Spencer 1:f5ac63519541 249 { "-chap", o_bool, &refuse_chap,
Michael J. Spencer 1:f5ac63519541 250 "Don't allow CHAP authentication with peer", 1 },
Michael J. Spencer 1:f5ac63519541 251 { "name", o_string, our_name,
Michael J. Spencer 1:f5ac63519541 252 "Set local name for authentication",
Michael J. Spencer 1:f5ac63519541 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
Michael J. Spencer 1:f5ac63519541 254 { "user", o_string, user,
Michael J. Spencer 1:f5ac63519541 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
Michael J. Spencer 1:f5ac63519541 256 { "usehostname", o_bool, &usehostname,
Michael J. Spencer 1:f5ac63519541 257 "Must use hostname for authentication", 1 },
Michael J. Spencer 1:f5ac63519541 258 { "remotename", o_string, remote_name,
Michael J. Spencer 1:f5ac63519541 259 "Set remote name for authentication", OPT_STATIC,
Michael J. Spencer 1:f5ac63519541 260 &explicit_remote, MAXNAMELEN },
Michael J. Spencer 1:f5ac63519541 261 { "auth", o_bool, &auth_required,
Michael J. Spencer 1:f5ac63519541 262 "Require authentication from peer", 1 },
Michael J. Spencer 1:f5ac63519541 263 { "noauth", o_bool, &auth_required,
Michael J. Spencer 1:f5ac63519541 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
Michael J. Spencer 1:f5ac63519541 265 { "login", o_bool, &uselogin,
Michael J. Spencer 1:f5ac63519541 266 "Use system password database for PAP", 1 },
Michael J. Spencer 1:f5ac63519541 267 { "papcrypt", o_bool, &cryptpap,
Michael J. Spencer 1:f5ac63519541 268 "PAP passwords are encrypted", 1 },
Michael J. Spencer 1:f5ac63519541 269 { "+ua", o_special, (void *)setupapfile,
Michael J. Spencer 1:f5ac63519541 270 "Get PAP user and password from file" },
Michael J. Spencer 1:f5ac63519541 271 { "password", o_string, passwd,
Michael J. Spencer 1:f5ac63519541 272 "Password for authenticating us to the peer", OPT_STATIC,
Michael J. Spencer 1:f5ac63519541 273 NULL, MAXSECRETLEN },
Michael J. Spencer 1:f5ac63519541 274 { "privgroup", o_special, (void *)privgroup,
Michael J. Spencer 1:f5ac63519541 275 "Allow group members to use privileged options", OPT_PRIV },
Michael J. Spencer 1:f5ac63519541 276 { "allow-ip", o_special, (void *)set_noauth_addr,
Michael J. Spencer 1:f5ac63519541 277 "Set IP address(es) which can be used without authentication",
Michael J. Spencer 1:f5ac63519541 278 OPT_PRIV },
Michael J. Spencer 1:f5ac63519541 279 { NULL }
Michael J. Spencer 1:f5ac63519541 280 };
Michael J. Spencer 1:f5ac63519541 281 #endif /* UNUSED */
Michael J. Spencer 1:f5ac63519541 282 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 283 /*
Michael J. Spencer 1:f5ac63519541 284 * setupapfile - specifies UPAP info for authenticating with peer.
Michael J. Spencer 1:f5ac63519541 285 */
Michael J. Spencer 1:f5ac63519541 286 static int
Michael J. Spencer 1:f5ac63519541 287 setupapfile(char **argv)
Michael J. Spencer 1:f5ac63519541 288 {
Michael J. Spencer 1:f5ac63519541 289 FILE * ufile;
Michael J. Spencer 1:f5ac63519541 290 int l;
Michael J. Spencer 1:f5ac63519541 291
Michael J. Spencer 1:f5ac63519541 292 lcp_allowoptions[0].neg_upap = 1;
Michael J. Spencer 1:f5ac63519541 293
Michael J. Spencer 1:f5ac63519541 294 /* open user info file */
Michael J. Spencer 1:f5ac63519541 295 seteuid(getuid());
Michael J. Spencer 1:f5ac63519541 296 ufile = fopen(*argv, "r");
Michael J. Spencer 1:f5ac63519541 297 seteuid(0);
Michael J. Spencer 1:f5ac63519541 298 if (ufile == NULL) {
Michael J. Spencer 1:f5ac63519541 299 option_error("unable to open user login data file %s", *argv);
Michael J. Spencer 1:f5ac63519541 300 return 0;
Michael J. Spencer 1:f5ac63519541 301 }
Michael J. Spencer 1:f5ac63519541 302 check_access(ufile, *argv);
Michael J. Spencer 1:f5ac63519541 303
Michael J. Spencer 1:f5ac63519541 304 /* get username */
Michael J. Spencer 1:f5ac63519541 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
Michael J. Spencer 1:f5ac63519541 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
Michael J. Spencer 1:f5ac63519541 307 option_error("unable to read user login data file %s", *argv);
Michael J. Spencer 1:f5ac63519541 308 return 0;
Michael J. Spencer 1:f5ac63519541 309 }
Michael J. Spencer 1:f5ac63519541 310 fclose(ufile);
Michael J. Spencer 1:f5ac63519541 311
Michael J. Spencer 1:f5ac63519541 312 /* get rid of newlines */
Michael J. Spencer 1:f5ac63519541 313 l = strlen(user);
Michael J. Spencer 1:f5ac63519541 314 if (l > 0 && user[l-1] == '\n')
Michael J. Spencer 1:f5ac63519541 315 user[l-1] = 0;
Michael J. Spencer 1:f5ac63519541 316 l = strlen(passwd);
Michael J. Spencer 1:f5ac63519541 317 if (l > 0 && passwd[l-1] == '\n')
Michael J. Spencer 1:f5ac63519541 318 passwd[l-1] = 0;
Michael J. Spencer 1:f5ac63519541 319
Michael J. Spencer 1:f5ac63519541 320 return (1);
Michael J. Spencer 1:f5ac63519541 321 }
Michael J. Spencer 1:f5ac63519541 322 #endif /* UNUSED */
Michael J. Spencer 1:f5ac63519541 323
Michael J. Spencer 1:f5ac63519541 324 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 325 /*
Michael J. Spencer 1:f5ac63519541 326 * privgroup - allow members of the group to have privileged access.
Michael J. Spencer 1:f5ac63519541 327 */
Michael J. Spencer 1:f5ac63519541 328 static int
Michael J. Spencer 1:f5ac63519541 329 privgroup(char **argv)
Michael J. Spencer 1:f5ac63519541 330 {
Michael J. Spencer 1:f5ac63519541 331 struct group *g;
Michael J. Spencer 1:f5ac63519541 332 int i;
Michael J. Spencer 1:f5ac63519541 333
Michael J. Spencer 1:f5ac63519541 334 g = getgrnam(*argv);
Michael J. Spencer 1:f5ac63519541 335 if (g == 0) {
Michael J. Spencer 1:f5ac63519541 336 option_error("group %s is unknown", *argv);
Michael J. Spencer 1:f5ac63519541 337 return 0;
Michael J. Spencer 1:f5ac63519541 338 }
Michael J. Spencer 1:f5ac63519541 339 for (i = 0; i < ngroups; ++i) {
Michael J. Spencer 1:f5ac63519541 340 if (groups[i] == g->gr_gid) {
Michael J. Spencer 1:f5ac63519541 341 privileged = 1;
Michael J. Spencer 1:f5ac63519541 342 break;
Michael J. Spencer 1:f5ac63519541 343 }
Michael J. Spencer 1:f5ac63519541 344 }
Michael J. Spencer 1:f5ac63519541 345 return 1;
Michael J. Spencer 1:f5ac63519541 346 }
Michael J. Spencer 1:f5ac63519541 347 #endif
Michael J. Spencer 1:f5ac63519541 348
Michael J. Spencer 1:f5ac63519541 349 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 350 /*
Michael J. Spencer 1:f5ac63519541 351 * set_noauth_addr - set address(es) that can be used without authentication.
Michael J. Spencer 1:f5ac63519541 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
Michael J. Spencer 1:f5ac63519541 353 */
Michael J. Spencer 1:f5ac63519541 354 static int
Michael J. Spencer 1:f5ac63519541 355 set_noauth_addr(char **argv)
Michael J. Spencer 1:f5ac63519541 356 {
Michael J. Spencer 1:f5ac63519541 357 char *addr = *argv;
Michael J. Spencer 1:f5ac63519541 358 int l = strlen(addr);
Michael J. Spencer 1:f5ac63519541 359 struct wordlist *wp;
Michael J. Spencer 1:f5ac63519541 360
Michael J. Spencer 1:f5ac63519541 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
Michael J. Spencer 1:f5ac63519541 362 if (wp == NULL)
Michael J. Spencer 1:f5ac63519541 363 novm("allow-ip argument");
Michael J. Spencer 1:f5ac63519541 364 wp->word = (char *) (wp + 1);
Michael J. Spencer 1:f5ac63519541 365 wp->next = noauth_addrs;
Michael J. Spencer 1:f5ac63519541 366 BCOPY(addr, wp->word, l);
Michael J. Spencer 1:f5ac63519541 367 noauth_addrs = wp;
Michael J. Spencer 1:f5ac63519541 368 return 1;
Michael J. Spencer 1:f5ac63519541 369 }
Michael J. Spencer 1:f5ac63519541 370 #endif /* UNUSED */
Michael J. Spencer 1:f5ac63519541 371
Michael J. Spencer 1:f5ac63519541 372 /*
Michael J. Spencer 1:f5ac63519541 373 * An Open on LCP has requested a change from Dead to Establish phase.
Michael J. Spencer 1:f5ac63519541 374 * Do what's necessary to bring the physical layer up.
Michael J. Spencer 1:f5ac63519541 375 */
Michael J. Spencer 1:f5ac63519541 376 void
Michael J. Spencer 1:f5ac63519541 377 link_required(int unit)
Michael J. Spencer 1:f5ac63519541 378 {
Michael J. Spencer 1:f5ac63519541 379 LWIP_UNUSED_ARG(unit);
Michael J. Spencer 1:f5ac63519541 380
Michael J. Spencer 1:f5ac63519541 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
Michael J. Spencer 1:f5ac63519541 382 }
Michael J. Spencer 1:f5ac63519541 383
Michael J. Spencer 1:f5ac63519541 384 /*
Michael J. Spencer 1:f5ac63519541 385 * LCP has terminated the link; go to the Dead phase and take the
Michael J. Spencer 1:f5ac63519541 386 * physical layer down.
Michael J. Spencer 1:f5ac63519541 387 */
Michael J. Spencer 1:f5ac63519541 388 void
Michael J. Spencer 1:f5ac63519541 389 link_terminated(int unit)
Michael J. Spencer 1:f5ac63519541 390 {
Michael J. Spencer 1:f5ac63519541 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
Michael J. Spencer 1:f5ac63519541 392 if (lcp_phase[unit] == PHASE_DEAD) {
Michael J. Spencer 1:f5ac63519541 393 return;
Michael J. Spencer 1:f5ac63519541 394 }
Michael J. Spencer 1:f5ac63519541 395 if (logged_in) {
Michael J. Spencer 1:f5ac63519541 396 plogout();
Michael J. Spencer 1:f5ac63519541 397 }
Michael J. Spencer 1:f5ac63519541 398 lcp_phase[unit] = PHASE_DEAD;
Michael J. Spencer 1:f5ac63519541 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
Michael J. Spencer 1:f5ac63519541 400 pppLinkTerminated(unit);
Michael J. Spencer 1:f5ac63519541 401 }
Michael J. Spencer 1:f5ac63519541 402
Michael J. Spencer 1:f5ac63519541 403 /*
Michael J. Spencer 1:f5ac63519541 404 * LCP has gone down; it will either die or try to re-establish.
Michael J. Spencer 1:f5ac63519541 405 */
Michael J. Spencer 1:f5ac63519541 406 void
Michael J. Spencer 1:f5ac63519541 407 link_down(int unit)
Michael J. Spencer 1:f5ac63519541 408 {
Michael J. Spencer 1:f5ac63519541 409 int i;
Michael J. Spencer 1:f5ac63519541 410 struct protent *protp;
Michael J. Spencer 1:f5ac63519541 411
Michael J. Spencer 1:f5ac63519541 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
Michael J. Spencer 1:f5ac63519541 413
Michael J. Spencer 1:f5ac63519541 414 if (did_authup) {
Michael J. Spencer 1:f5ac63519541 415 /* XXX Do link down processing. */
Michael J. Spencer 1:f5ac63519541 416 did_authup = 0;
Michael J. Spencer 1:f5ac63519541 417 }
Michael J. Spencer 1:f5ac63519541 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
Michael J. Spencer 1:f5ac63519541 419 if (!protp->enabled_flag) {
Michael J. Spencer 1:f5ac63519541 420 continue;
Michael J. Spencer 1:f5ac63519541 421 }
Michael J. Spencer 1:f5ac63519541 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
Michael J. Spencer 1:f5ac63519541 423 (*protp->lowerdown)(unit);
Michael J. Spencer 1:f5ac63519541 424 }
Michael J. Spencer 1:f5ac63519541 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
Michael J. Spencer 1:f5ac63519541 426 (*protp->close)(unit, "LCP down");
Michael J. Spencer 1:f5ac63519541 427 }
Michael J. Spencer 1:f5ac63519541 428 }
Michael J. Spencer 1:f5ac63519541 429 num_np_open = 0; /* number of network protocols we have opened */
Michael J. Spencer 1:f5ac63519541 430 num_np_up = 0; /* Number of network protocols which have come up */
Michael J. Spencer 1:f5ac63519541 431
Michael J. Spencer 1:f5ac63519541 432 if (lcp_phase[unit] != PHASE_DEAD) {
Michael J. Spencer 1:f5ac63519541 433 lcp_phase[unit] = PHASE_TERMINATE;
Michael J. Spencer 1:f5ac63519541 434 }
Michael J. Spencer 1:f5ac63519541 435 pppLinkDown(unit);
Michael J. Spencer 1:f5ac63519541 436 }
Michael J. Spencer 1:f5ac63519541 437
Michael J. Spencer 1:f5ac63519541 438 /*
Michael J. Spencer 1:f5ac63519541 439 * The link is established.
Michael J. Spencer 1:f5ac63519541 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
Michael J. Spencer 1:f5ac63519541 441 */
Michael J. Spencer 1:f5ac63519541 442 void
Michael J. Spencer 1:f5ac63519541 443 link_established(int unit)
Michael J. Spencer 1:f5ac63519541 444 {
Michael J. Spencer 1:f5ac63519541 445 int auth;
Michael J. Spencer 1:f5ac63519541 446 int i;
Michael J. Spencer 1:f5ac63519541 447 struct protent *protp;
Michael J. Spencer 1:f5ac63519541 448 lcp_options *wo = &lcp_wantoptions[unit];
Michael J. Spencer 1:f5ac63519541 449 lcp_options *go = &lcp_gotoptions[unit];
Michael J. Spencer 1:f5ac63519541 450 #if PAP_SUPPORT || CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 451 lcp_options *ho = &lcp_hisoptions[unit];
Michael J. Spencer 1:f5ac63519541 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 453
Michael J. Spencer 1:f5ac63519541 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
Michael J. Spencer 1:f5ac63519541 455 /*
Michael J. Spencer 1:f5ac63519541 456 * Tell higher-level protocols that LCP is up.
Michael J. Spencer 1:f5ac63519541 457 */
Michael J. Spencer 1:f5ac63519541 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
Michael J. Spencer 1:f5ac63519541 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
Michael J. Spencer 1:f5ac63519541 460 (*protp->lowerup)(unit);
Michael J. Spencer 1:f5ac63519541 461 }
Michael J. Spencer 1:f5ac63519541 462 }
Michael J. Spencer 1:f5ac63519541 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
Michael J. Spencer 1:f5ac63519541 464 /*
Michael J. Spencer 1:f5ac63519541 465 * We wanted the peer to authenticate itself, and it refused:
Michael J. Spencer 1:f5ac63519541 466 * treat it as though it authenticated with PAP using a username
Michael J. Spencer 1:f5ac63519541 467 * of "" and a password of "". If that's not OK, boot it out.
Michael J. Spencer 1:f5ac63519541 468 */
Michael J. Spencer 1:f5ac63519541 469 if (!wo->neg_upap || !null_login(unit)) {
Michael J. Spencer 1:f5ac63519541 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
Michael J. Spencer 1:f5ac63519541 471 lcp_close(unit, "peer refused to authenticate");
Michael J. Spencer 1:f5ac63519541 472 return;
Michael J. Spencer 1:f5ac63519541 473 }
Michael J. Spencer 1:f5ac63519541 474 }
Michael J. Spencer 1:f5ac63519541 475
Michael J. Spencer 1:f5ac63519541 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
Michael J. Spencer 1:f5ac63519541 477 auth = 0;
Michael J. Spencer 1:f5ac63519541 478 #if CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 479 if (go->neg_chap) {
Michael J. Spencer 1:f5ac63519541 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
Michael J. Spencer 1:f5ac63519541 481 auth |= CHAP_PEER;
Michael J. Spencer 1:f5ac63519541 482 }
Michael J. Spencer 1:f5ac63519541 483 #endif /* CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 484 #if PAP_SUPPORT && CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 485 else
Michael J. Spencer 1:f5ac63519541 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 487 #if PAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 488 if (go->neg_upap) {
Michael J. Spencer 1:f5ac63519541 489 upap_authpeer(unit);
Michael J. Spencer 1:f5ac63519541 490 auth |= PAP_PEER;
Michael J. Spencer 1:f5ac63519541 491 }
Michael J. Spencer 1:f5ac63519541 492 #endif /* PAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 493 #if CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 494 if (ho->neg_chap) {
Michael J. Spencer 1:f5ac63519541 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
Michael J. Spencer 1:f5ac63519541 496 auth |= CHAP_WITHPEER;
Michael J. Spencer 1:f5ac63519541 497 }
Michael J. Spencer 1:f5ac63519541 498 #endif /* CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 499 #if PAP_SUPPORT && CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 500 else
Michael J. Spencer 1:f5ac63519541 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 502 #if PAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 503 if (ho->neg_upap) {
Michael J. Spencer 1:f5ac63519541 504 if (ppp_settings.passwd[0] == 0) {
Michael J. Spencer 1:f5ac63519541 505 passwd_from_file = 1;
Michael J. Spencer 1:f5ac63519541 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
Michael J. Spencer 1:f5ac63519541 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
Michael J. Spencer 1:f5ac63519541 508 }
Michael J. Spencer 1:f5ac63519541 509 }
Michael J. Spencer 1:f5ac63519541 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
Michael J. Spencer 1:f5ac63519541 511 auth |= PAP_WITHPEER;
Michael J. Spencer 1:f5ac63519541 512 }
Michael J. Spencer 1:f5ac63519541 513 #endif /* PAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 514 auth_pending[unit] = auth;
Michael J. Spencer 1:f5ac63519541 515
Michael J. Spencer 1:f5ac63519541 516 if (!auth) {
Michael J. Spencer 1:f5ac63519541 517 network_phase(unit);
Michael J. Spencer 1:f5ac63519541 518 }
Michael J. Spencer 1:f5ac63519541 519 }
Michael J. Spencer 1:f5ac63519541 520
Michael J. Spencer 1:f5ac63519541 521 /*
Michael J. Spencer 1:f5ac63519541 522 * Proceed to the network phase.
Michael J. Spencer 1:f5ac63519541 523 */
Michael J. Spencer 1:f5ac63519541 524 static void
Michael J. Spencer 1:f5ac63519541 525 network_phase(int unit)
Michael J. Spencer 1:f5ac63519541 526 {
Michael J. Spencer 1:f5ac63519541 527 int i;
Michael J. Spencer 1:f5ac63519541 528 struct protent *protp;
Michael J. Spencer 1:f5ac63519541 529 lcp_options *go = &lcp_gotoptions[unit];
Michael J. Spencer 1:f5ac63519541 530
Michael J. Spencer 1:f5ac63519541 531 /*
Michael J. Spencer 1:f5ac63519541 532 * If the peer had to authenticate, run the auth-up script now.
Michael J. Spencer 1:f5ac63519541 533 */
Michael J. Spencer 1:f5ac63519541 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
Michael J. Spencer 1:f5ac63519541 535 /* XXX Do setup for peer authentication. */
Michael J. Spencer 1:f5ac63519541 536 did_authup = 1;
Michael J. Spencer 1:f5ac63519541 537 }
Michael J. Spencer 1:f5ac63519541 538
Michael J. Spencer 1:f5ac63519541 539 #if CBCP_SUPPORT
Michael J. Spencer 1:f5ac63519541 540 /*
Michael J. Spencer 1:f5ac63519541 541 * If we negotiated callback, do it now.
Michael J. Spencer 1:f5ac63519541 542 */
Michael J. Spencer 1:f5ac63519541 543 if (go->neg_cbcp) {
Michael J. Spencer 1:f5ac63519541 544 lcp_phase[unit] = PHASE_CALLBACK;
Michael J. Spencer 1:f5ac63519541 545 (*cbcp_protent.open)(unit);
Michael J. Spencer 1:f5ac63519541 546 return;
Michael J. Spencer 1:f5ac63519541 547 }
Michael J. Spencer 1:f5ac63519541 548 #endif /* CBCP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 549
Michael J. Spencer 1:f5ac63519541 550 lcp_phase[unit] = PHASE_NETWORK;
Michael J. Spencer 1:f5ac63519541 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
Michael J. Spencer 1:f5ac63519541 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
Michael J. Spencer 1:f5ac63519541 553 (*protp->open)(unit);
Michael J. Spencer 1:f5ac63519541 554 if (protp->protocol != PPP_CCP) {
Michael J. Spencer 1:f5ac63519541 555 ++num_np_open;
Michael J. Spencer 1:f5ac63519541 556 }
Michael J. Spencer 1:f5ac63519541 557 }
Michael J. Spencer 1:f5ac63519541 558 }
Michael J. Spencer 1:f5ac63519541 559
Michael J. Spencer 1:f5ac63519541 560 if (num_np_open == 0) {
Michael J. Spencer 1:f5ac63519541 561 /* nothing to do */
Michael J. Spencer 1:f5ac63519541 562 lcp_close(0, "No network protocols running");
Michael J. Spencer 1:f5ac63519541 563 }
Michael J. Spencer 1:f5ac63519541 564 }
Michael J. Spencer 1:f5ac63519541 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
Michael J. Spencer 1:f5ac63519541 566
Michael J. Spencer 1:f5ac63519541 567 /*
Michael J. Spencer 1:f5ac63519541 568 * The peer has failed to authenticate himself using `protocol'.
Michael J. Spencer 1:f5ac63519541 569 */
Michael J. Spencer 1:f5ac63519541 570 void
Michael J. Spencer 1:f5ac63519541 571 auth_peer_fail(int unit, u16_t protocol)
Michael J. Spencer 1:f5ac63519541 572 {
Michael J. Spencer 1:f5ac63519541 573 LWIP_UNUSED_ARG(protocol);
Michael J. Spencer 1:f5ac63519541 574
Michael J. Spencer 1:f5ac63519541 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
Michael J. Spencer 1:f5ac63519541 576 /*
Michael J. Spencer 1:f5ac63519541 577 * Authentication failure: take the link down
Michael J. Spencer 1:f5ac63519541 578 */
Michael J. Spencer 1:f5ac63519541 579 lcp_close(unit, "Authentication failed");
Michael J. Spencer 1:f5ac63519541 580 }
Michael J. Spencer 1:f5ac63519541 581
Michael J. Spencer 1:f5ac63519541 582
Michael J. Spencer 1:f5ac63519541 583 #if PAP_SUPPORT || CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 584 /*
Michael J. Spencer 1:f5ac63519541 585 * The peer has been successfully authenticated using `protocol'.
Michael J. Spencer 1:f5ac63519541 586 */
Michael J. Spencer 1:f5ac63519541 587 void
Michael J. Spencer 1:f5ac63519541 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
Michael J. Spencer 1:f5ac63519541 589 {
Michael J. Spencer 1:f5ac63519541 590 int pbit;
Michael J. Spencer 1:f5ac63519541 591
Michael J. Spencer 1:f5ac63519541 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
Michael J. Spencer 1:f5ac63519541 593 switch (protocol) {
Michael J. Spencer 1:f5ac63519541 594 case PPP_CHAP:
Michael J. Spencer 1:f5ac63519541 595 pbit = CHAP_PEER;
Michael J. Spencer 1:f5ac63519541 596 break;
Michael J. Spencer 1:f5ac63519541 597 case PPP_PAP:
Michael J. Spencer 1:f5ac63519541 598 pbit = PAP_PEER;
Michael J. Spencer 1:f5ac63519541 599 break;
Michael J. Spencer 1:f5ac63519541 600 default:
Michael J. Spencer 1:f5ac63519541 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
Michael J. Spencer 1:f5ac63519541 602 return;
Michael J. Spencer 1:f5ac63519541 603 }
Michael J. Spencer 1:f5ac63519541 604
Michael J. Spencer 1:f5ac63519541 605 /*
Michael J. Spencer 1:f5ac63519541 606 * Save the authenticated name of the peer for later.
Michael J. Spencer 1:f5ac63519541 607 */
Michael J. Spencer 1:f5ac63519541 608 if (namelen > (int)sizeof(peer_authname) - 1) {
Michael J. Spencer 1:f5ac63519541 609 namelen = sizeof(peer_authname) - 1;
Michael J. Spencer 1:f5ac63519541 610 }
Michael J. Spencer 1:f5ac63519541 611 BCOPY(name, peer_authname, namelen);
Michael J. Spencer 1:f5ac63519541 612 peer_authname[namelen] = 0;
Michael J. Spencer 1:f5ac63519541 613
Michael J. Spencer 1:f5ac63519541 614 /*
Michael J. Spencer 1:f5ac63519541 615 * If there is no more authentication still to be done,
Michael J. Spencer 1:f5ac63519541 616 * proceed to the network (or callback) phase.
Michael J. Spencer 1:f5ac63519541 617 */
Michael J. Spencer 1:f5ac63519541 618 if ((auth_pending[unit] &= ~pbit) == 0) {
Michael J. Spencer 1:f5ac63519541 619 network_phase(unit);
Michael J. Spencer 1:f5ac63519541 620 }
Michael J. Spencer 1:f5ac63519541 621 }
Michael J. Spencer 1:f5ac63519541 622
Michael J. Spencer 1:f5ac63519541 623 /*
Michael J. Spencer 1:f5ac63519541 624 * We have failed to authenticate ourselves to the peer using `protocol'.
Michael J. Spencer 1:f5ac63519541 625 */
Michael J. Spencer 1:f5ac63519541 626 void
Michael J. Spencer 1:f5ac63519541 627 auth_withpeer_fail(int unit, u16_t protocol)
Michael J. Spencer 1:f5ac63519541 628 {
Michael J. Spencer 1:f5ac63519541 629 int errCode = PPPERR_AUTHFAIL;
Michael J. Spencer 1:f5ac63519541 630
Michael J. Spencer 1:f5ac63519541 631 LWIP_UNUSED_ARG(protocol);
Michael J. Spencer 1:f5ac63519541 632
Michael J. Spencer 1:f5ac63519541 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
Michael J. Spencer 1:f5ac63519541 634 if (passwd_from_file) {
Michael J. Spencer 1:f5ac63519541 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
Michael J. Spencer 1:f5ac63519541 636 }
Michael J. Spencer 1:f5ac63519541 637
Michael J. Spencer 1:f5ac63519541 638 /*
Michael J. Spencer 1:f5ac63519541 639 * We've failed to authenticate ourselves to our peer.
Michael J. Spencer 1:f5ac63519541 640 * He'll probably take the link down, and there's not much
Michael J. Spencer 1:f5ac63519541 641 * we can do except wait for that.
Michael J. Spencer 1:f5ac63519541 642 */
Michael J. Spencer 1:f5ac63519541 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
Michael J. Spencer 1:f5ac63519541 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
Michael J. Spencer 1:f5ac63519541 645 }
Michael J. Spencer 1:f5ac63519541 646
Michael J. Spencer 1:f5ac63519541 647 /*
Michael J. Spencer 1:f5ac63519541 648 * We have successfully authenticated ourselves with the peer using `protocol'.
Michael J. Spencer 1:f5ac63519541 649 */
Michael J. Spencer 1:f5ac63519541 650 void
Michael J. Spencer 1:f5ac63519541 651 auth_withpeer_success(int unit, u16_t protocol)
Michael J. Spencer 1:f5ac63519541 652 {
Michael J. Spencer 1:f5ac63519541 653 int pbit;
Michael J. Spencer 1:f5ac63519541 654
Michael J. Spencer 1:f5ac63519541 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
Michael J. Spencer 1:f5ac63519541 656 switch (protocol) {
Michael J. Spencer 1:f5ac63519541 657 case PPP_CHAP:
Michael J. Spencer 1:f5ac63519541 658 pbit = CHAP_WITHPEER;
Michael J. Spencer 1:f5ac63519541 659 break;
Michael J. Spencer 1:f5ac63519541 660 case PPP_PAP:
Michael J. Spencer 1:f5ac63519541 661 if (passwd_from_file) {
Michael J. Spencer 1:f5ac63519541 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
Michael J. Spencer 1:f5ac63519541 663 }
Michael J. Spencer 1:f5ac63519541 664 pbit = PAP_WITHPEER;
Michael J. Spencer 1:f5ac63519541 665 break;
Michael J. Spencer 1:f5ac63519541 666 default:
Michael J. Spencer 1:f5ac63519541 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
Michael J. Spencer 1:f5ac63519541 668 pbit = 0;
Michael J. Spencer 1:f5ac63519541 669 }
Michael J. Spencer 1:f5ac63519541 670
Michael J. Spencer 1:f5ac63519541 671 /*
Michael J. Spencer 1:f5ac63519541 672 * If there is no more authentication still being done,
Michael J. Spencer 1:f5ac63519541 673 * proceed to the network (or callback) phase.
Michael J. Spencer 1:f5ac63519541 674 */
Michael J. Spencer 1:f5ac63519541 675 if ((auth_pending[unit] &= ~pbit) == 0) {
Michael J. Spencer 1:f5ac63519541 676 network_phase(unit);
Michael J. Spencer 1:f5ac63519541 677 }
Michael J. Spencer 1:f5ac63519541 678 }
Michael J. Spencer 1:f5ac63519541 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 680
Michael J. Spencer 1:f5ac63519541 681
Michael J. Spencer 1:f5ac63519541 682 /*
Michael J. Spencer 1:f5ac63519541 683 * np_up - a network protocol has come up.
Michael J. Spencer 1:f5ac63519541 684 */
Michael J. Spencer 1:f5ac63519541 685 void
Michael J. Spencer 1:f5ac63519541 686 np_up(int unit, u16_t proto)
Michael J. Spencer 1:f5ac63519541 687 {
Michael J. Spencer 1:f5ac63519541 688 LWIP_UNUSED_ARG(unit);
Michael J. Spencer 1:f5ac63519541 689 LWIP_UNUSED_ARG(proto);
Michael J. Spencer 1:f5ac63519541 690
Michael J. Spencer 1:f5ac63519541 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
Michael J. Spencer 1:f5ac63519541 692 if (num_np_up == 0) {
Michael J. Spencer 1:f5ac63519541 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
Michael J. Spencer 1:f5ac63519541 694 /*
Michael J. Spencer 1:f5ac63519541 695 * At this point we consider that the link has come up successfully.
Michael J. Spencer 1:f5ac63519541 696 */
Michael J. Spencer 1:f5ac63519541 697 if (ppp_settings.idle_time_limit > 0) {
Michael J. Spencer 1:f5ac63519541 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
Michael J. Spencer 1:f5ac63519541 699 }
Michael J. Spencer 1:f5ac63519541 700
Michael J. Spencer 1:f5ac63519541 701 /*
Michael J. Spencer 1:f5ac63519541 702 * Set a timeout to close the connection once the maximum
Michael J. Spencer 1:f5ac63519541 703 * connect time has expired.
Michael J. Spencer 1:f5ac63519541 704 */
Michael J. Spencer 1:f5ac63519541 705 if (ppp_settings.maxconnect > 0) {
Michael J. Spencer 1:f5ac63519541 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
Michael J. Spencer 1:f5ac63519541 707 }
Michael J. Spencer 1:f5ac63519541 708 }
Michael J. Spencer 1:f5ac63519541 709 ++num_np_up;
Michael J. Spencer 1:f5ac63519541 710 }
Michael J. Spencer 1:f5ac63519541 711
Michael J. Spencer 1:f5ac63519541 712 /*
Michael J. Spencer 1:f5ac63519541 713 * np_down - a network protocol has gone down.
Michael J. Spencer 1:f5ac63519541 714 */
Michael J. Spencer 1:f5ac63519541 715 void
Michael J. Spencer 1:f5ac63519541 716 np_down(int unit, u16_t proto)
Michael J. Spencer 1:f5ac63519541 717 {
Michael J. Spencer 1:f5ac63519541 718 LWIP_UNUSED_ARG(unit);
Michael J. Spencer 1:f5ac63519541 719 LWIP_UNUSED_ARG(proto);
Michael J. Spencer 1:f5ac63519541 720
Michael J. Spencer 1:f5ac63519541 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
Michael J. Spencer 1:f5ac63519541 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
Michael J. Spencer 1:f5ac63519541 723 UNTIMEOUT(check_idle, NULL);
Michael J. Spencer 1:f5ac63519541 724 }
Michael J. Spencer 1:f5ac63519541 725 }
Michael J. Spencer 1:f5ac63519541 726
Michael J. Spencer 1:f5ac63519541 727 /*
Michael J. Spencer 1:f5ac63519541 728 * np_finished - a network protocol has finished using the link.
Michael J. Spencer 1:f5ac63519541 729 */
Michael J. Spencer 1:f5ac63519541 730 void
Michael J. Spencer 1:f5ac63519541 731 np_finished(int unit, u16_t proto)
Michael J. Spencer 1:f5ac63519541 732 {
Michael J. Spencer 1:f5ac63519541 733 LWIP_UNUSED_ARG(unit);
Michael J. Spencer 1:f5ac63519541 734 LWIP_UNUSED_ARG(proto);
Michael J. Spencer 1:f5ac63519541 735
Michael J. Spencer 1:f5ac63519541 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
Michael J. Spencer 1:f5ac63519541 737 if (--num_np_open <= 0) {
Michael J. Spencer 1:f5ac63519541 738 /* no further use for the link: shut up shop. */
Michael J. Spencer 1:f5ac63519541 739 lcp_close(0, "No network protocols running");
Michael J. Spencer 1:f5ac63519541 740 }
Michael J. Spencer 1:f5ac63519541 741 }
Michael J. Spencer 1:f5ac63519541 742
Michael J. Spencer 1:f5ac63519541 743 /*
Michael J. Spencer 1:f5ac63519541 744 * check_idle - check whether the link has been idle for long
Michael J. Spencer 1:f5ac63519541 745 * enough that we can shut it down.
Michael J. Spencer 1:f5ac63519541 746 */
Michael J. Spencer 1:f5ac63519541 747 static void
Michael J. Spencer 1:f5ac63519541 748 check_idle(void *arg)
Michael J. Spencer 1:f5ac63519541 749 {
Michael J. Spencer 1:f5ac63519541 750 struct ppp_idle idle;
Michael J. Spencer 1:f5ac63519541 751 u_short itime;
Michael J. Spencer 1:f5ac63519541 752
Michael J. Spencer 1:f5ac63519541 753 LWIP_UNUSED_ARG(arg);
Michael J. Spencer 1:f5ac63519541 754 if (!get_idle_time(0, &idle)) {
Michael J. Spencer 1:f5ac63519541 755 return;
Michael J. Spencer 1:f5ac63519541 756 }
Michael J. Spencer 1:f5ac63519541 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
Michael J. Spencer 1:f5ac63519541 758 if (itime >= ppp_settings.idle_time_limit) {
Michael J. Spencer 1:f5ac63519541 759 /* link is idle: shut it down. */
Michael J. Spencer 1:f5ac63519541 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
Michael J. Spencer 1:f5ac63519541 761 lcp_close(0, "Link inactive");
Michael J. Spencer 1:f5ac63519541 762 } else {
Michael J. Spencer 1:f5ac63519541 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
Michael J. Spencer 1:f5ac63519541 764 }
Michael J. Spencer 1:f5ac63519541 765 }
Michael J. Spencer 1:f5ac63519541 766
Michael J. Spencer 1:f5ac63519541 767 /*
Michael J. Spencer 1:f5ac63519541 768 * connect_time_expired - log a message and close the connection.
Michael J. Spencer 1:f5ac63519541 769 */
Michael J. Spencer 1:f5ac63519541 770 static void
Michael J. Spencer 1:f5ac63519541 771 connect_time_expired(void *arg)
Michael J. Spencer 1:f5ac63519541 772 {
Michael J. Spencer 1:f5ac63519541 773 LWIP_UNUSED_ARG(arg);
Michael J. Spencer 1:f5ac63519541 774
Michael J. Spencer 1:f5ac63519541 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
Michael J. Spencer 1:f5ac63519541 776 lcp_close(0, "Connect time expired"); /* Close connection */
Michael J. Spencer 1:f5ac63519541 777 }
Michael J. Spencer 1:f5ac63519541 778
Michael J. Spencer 1:f5ac63519541 779 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 780 /*
Michael J. Spencer 1:f5ac63519541 781 * auth_check_options - called to check authentication options.
Michael J. Spencer 1:f5ac63519541 782 */
Michael J. Spencer 1:f5ac63519541 783 void
Michael J. Spencer 1:f5ac63519541 784 auth_check_options(void)
Michael J. Spencer 1:f5ac63519541 785 {
Michael J. Spencer 1:f5ac63519541 786 lcp_options *wo = &lcp_wantoptions[0];
Michael J. Spencer 1:f5ac63519541 787 int can_auth;
Michael J. Spencer 1:f5ac63519541 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
Michael J. Spencer 1:f5ac63519541 789 u32_t remote;
Michael J. Spencer 1:f5ac63519541 790
Michael J. Spencer 1:f5ac63519541 791 /* Default our_name to hostname, and user to our_name */
Michael J. Spencer 1:f5ac63519541 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
Michael J. Spencer 1:f5ac63519541 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
Michael J. Spencer 1:f5ac63519541 794 }
Michael J. Spencer 1:f5ac63519541 795
Michael J. Spencer 1:f5ac63519541 796 if (ppp_settings.user[0] == 0) {
Michael J. Spencer 1:f5ac63519541 797 strcpy(ppp_settings.user, ppp_settings.our_name);
Michael J. Spencer 1:f5ac63519541 798 }
Michael J. Spencer 1:f5ac63519541 799
Michael J. Spencer 1:f5ac63519541 800 /* If authentication is required, ask peer for CHAP or PAP. */
Michael J. Spencer 1:f5ac63519541 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
Michael J. Spencer 1:f5ac63519541 802 wo->neg_chap = 1;
Michael J. Spencer 1:f5ac63519541 803 wo->neg_upap = 1;
Michael J. Spencer 1:f5ac63519541 804 }
Michael J. Spencer 1:f5ac63519541 805
Michael J. Spencer 1:f5ac63519541 806 /*
Michael J. Spencer 1:f5ac63519541 807 * Check whether we have appropriate secrets to use
Michael J. Spencer 1:f5ac63519541 808 * to authenticate the peer.
Michael J. Spencer 1:f5ac63519541 809 */
Michael J. Spencer 1:f5ac63519541 810 can_auth = wo->neg_upap && have_pap_secret();
Michael J. Spencer 1:f5ac63519541 811 if (!can_auth && wo->neg_chap) {
Michael J. Spencer 1:f5ac63519541 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
Michael J. Spencer 1:f5ac63519541 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
Michael J. Spencer 1:f5ac63519541 814 }
Michael J. Spencer 1:f5ac63519541 815
Michael J. Spencer 1:f5ac63519541 816 if (ppp_settings.auth_required && !can_auth) {
Michael J. Spencer 1:f5ac63519541 817 ppp_panic("No auth secret");
Michael J. Spencer 1:f5ac63519541 818 }
Michael J. Spencer 1:f5ac63519541 819 }
Michael J. Spencer 1:f5ac63519541 820 #endif /* UNUSED */
Michael J. Spencer 1:f5ac63519541 821
Michael J. Spencer 1:f5ac63519541 822 /*
Michael J. Spencer 1:f5ac63519541 823 * auth_reset - called when LCP is starting negotiations to recheck
Michael J. Spencer 1:f5ac63519541 824 * authentication options, i.e. whether we have appropriate secrets
Michael J. Spencer 1:f5ac63519541 825 * to use for authenticating ourselves and/or the peer.
Michael J. Spencer 1:f5ac63519541 826 */
Michael J. Spencer 1:f5ac63519541 827 void
Michael J. Spencer 1:f5ac63519541 828 auth_reset(int unit)
Michael J. Spencer 1:f5ac63519541 829 {
Michael J. Spencer 1:f5ac63519541 830 lcp_options *go = &lcp_gotoptions[unit];
Michael J. Spencer 1:f5ac63519541 831 lcp_options *ao = &lcp_allowoptions[0];
Michael J. Spencer 1:f5ac63519541 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
Michael J. Spencer 1:f5ac63519541 833 u32_t remote;
Michael J. Spencer 1:f5ac63519541 834
Michael J. Spencer 1:f5ac63519541 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
Michael J. Spencer 1:f5ac63519541 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
Michael J. Spencer 1:f5ac63519541 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)*/;
Michael J. Spencer 1:f5ac63519541 838
Michael J. Spencer 1:f5ac63519541 839 if (go->neg_upap && !have_pap_secret()) {
Michael J. Spencer 1:f5ac63519541 840 go->neg_upap = 0;
Michael J. Spencer 1:f5ac63519541 841 }
Michael J. Spencer 1:f5ac63519541 842 if (go->neg_chap) {
Michael J. Spencer 1:f5ac63519541 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
Michael J. Spencer 1:f5ac63519541 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
Michael J. Spencer 1:f5ac63519541 845 go->neg_chap = 0;
Michael J. Spencer 1:f5ac63519541 846 }
Michael J. Spencer 1:f5ac63519541 847 }
Michael J. Spencer 1:f5ac63519541 848 }
Michael J. Spencer 1:f5ac63519541 849
Michael J. Spencer 1:f5ac63519541 850 #if PAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 851 /*
Michael J. Spencer 1:f5ac63519541 852 * check_passwd - Check the user name and passwd against the PAP secrets
Michael J. Spencer 1:f5ac63519541 853 * file. If requested, also check against the system password database,
Michael J. Spencer 1:f5ac63519541 854 * and login the user if OK.
Michael J. Spencer 1:f5ac63519541 855 *
Michael J. Spencer 1:f5ac63519541 856 * returns:
Michael J. Spencer 1:f5ac63519541 857 * UPAP_AUTHNAK: Authentication failed.
Michael J. Spencer 1:f5ac63519541 858 * UPAP_AUTHACK: Authentication succeeded.
Michael J. Spencer 1:f5ac63519541 859 * In either case, msg points to an appropriate message.
Michael J. Spencer 1:f5ac63519541 860 */
Michael J. Spencer 1:f5ac63519541 861 u_char
Michael J. Spencer 1:f5ac63519541 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
Michael J. Spencer 1:f5ac63519541 863 {
Michael J. Spencer 1:f5ac63519541 864 #if 1 /* XXX Assume all entries OK. */
Michael J. Spencer 1:f5ac63519541 865 LWIP_UNUSED_ARG(unit);
Michael J. Spencer 1:f5ac63519541 866 LWIP_UNUSED_ARG(auser);
Michael J. Spencer 1:f5ac63519541 867 LWIP_UNUSED_ARG(userlen);
Michael J. Spencer 1:f5ac63519541 868 LWIP_UNUSED_ARG(apasswd);
Michael J. Spencer 1:f5ac63519541 869 LWIP_UNUSED_ARG(passwdlen);
Michael J. Spencer 1:f5ac63519541 870 LWIP_UNUSED_ARG(msglen);
Michael J. Spencer 1:f5ac63519541 871 *msg = (char *) 0;
Michael J. Spencer 1:f5ac63519541 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
Michael J. Spencer 1:f5ac63519541 873 #else
Michael J. Spencer 1:f5ac63519541 874 u_char ret = 0;
Michael J. Spencer 1:f5ac63519541 875 struct wordlist *addrs = NULL;
Michael J. Spencer 1:f5ac63519541 876 char passwd[256], user[256];
Michael J. Spencer 1:f5ac63519541 877 char secret[MAXWORDLEN];
Michael J. Spencer 1:f5ac63519541 878 static u_short attempts = 0;
Michael J. Spencer 1:f5ac63519541 879
Michael J. Spencer 1:f5ac63519541 880 /*
Michael J. Spencer 1:f5ac63519541 881 * Make copies of apasswd and auser, then null-terminate them.
Michael J. Spencer 1:f5ac63519541 882 */
Michael J. Spencer 1:f5ac63519541 883 BCOPY(apasswd, passwd, passwdlen);
Michael J. Spencer 1:f5ac63519541 884 passwd[passwdlen] = '\0';
Michael J. Spencer 1:f5ac63519541 885 BCOPY(auser, user, userlen);
Michael J. Spencer 1:f5ac63519541 886 user[userlen] = '\0';
Michael J. Spencer 1:f5ac63519541 887 *msg = (char *) 0;
Michael J. Spencer 1:f5ac63519541 888
Michael J. Spencer 1:f5ac63519541 889 /* XXX Validate user name and password. */
Michael J. Spencer 1:f5ac63519541 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
Michael J. Spencer 1:f5ac63519541 891
Michael J. Spencer 1:f5ac63519541 892 if (ret == UPAP_AUTHNAK) {
Michael J. Spencer 1:f5ac63519541 893 if (*msg == (char *) 0) {
Michael J. Spencer 1:f5ac63519541 894 *msg = "Login incorrect";
Michael J. Spencer 1:f5ac63519541 895 }
Michael J. Spencer 1:f5ac63519541 896 *msglen = strlen(*msg);
Michael J. Spencer 1:f5ac63519541 897 /*
Michael J. Spencer 1:f5ac63519541 898 * Frustrate passwd stealer programs.
Michael J. Spencer 1:f5ac63519541 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
Michael J. Spencer 1:f5ac63519541 900 * On 10'th, drop the connection.
Michael J. Spencer 1:f5ac63519541 901 */
Michael J. Spencer 1:f5ac63519541 902 if (attempts++ >= 10) {
Michael J. Spencer 1:f5ac63519541 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
Michael J. Spencer 1:f5ac63519541 904 /*ppp_panic("Excess Bad Logins");*/
Michael J. Spencer 1:f5ac63519541 905 }
Michael J. Spencer 1:f5ac63519541 906 if (attempts > 3) {
Michael J. Spencer 1:f5ac63519541 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
Michael J. Spencer 1:f5ac63519541 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
Michael J. Spencer 1:f5ac63519541 909 */
Michael J. Spencer 1:f5ac63519541 910 /*sys_msleep((attempts - 3) * 5);*/
Michael J. Spencer 1:f5ac63519541 911 }
Michael J. Spencer 1:f5ac63519541 912 if (addrs != NULL) {
Michael J. Spencer 1:f5ac63519541 913 free_wordlist(addrs);
Michael J. Spencer 1:f5ac63519541 914 }
Michael J. Spencer 1:f5ac63519541 915 } else {
Michael J. Spencer 1:f5ac63519541 916 attempts = 0; /* Reset count */
Michael J. Spencer 1:f5ac63519541 917 if (*msg == (char *) 0) {
Michael J. Spencer 1:f5ac63519541 918 *msg = "Login ok";
Michael J. Spencer 1:f5ac63519541 919 }
Michael J. Spencer 1:f5ac63519541 920 *msglen = strlen(*msg);
Michael J. Spencer 1:f5ac63519541 921 set_allowed_addrs(unit, addrs);
Michael J. Spencer 1:f5ac63519541 922 }
Michael J. Spencer 1:f5ac63519541 923
Michael J. Spencer 1:f5ac63519541 924 BZERO(passwd, sizeof(passwd));
Michael J. Spencer 1:f5ac63519541 925 BZERO(secret, sizeof(secret));
Michael J. Spencer 1:f5ac63519541 926
Michael J. Spencer 1:f5ac63519541 927 return ret;
Michael J. Spencer 1:f5ac63519541 928 #endif
Michael J. Spencer 1:f5ac63519541 929 }
Michael J. Spencer 1:f5ac63519541 930 #endif /* PAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 931
Michael J. Spencer 1:f5ac63519541 932 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 933 /*
Michael J. Spencer 1:f5ac63519541 934 * This function is needed for PAM.
Michael J. Spencer 1:f5ac63519541 935 */
Michael J. Spencer 1:f5ac63519541 936
Michael J. Spencer 1:f5ac63519541 937 #ifdef USE_PAM
Michael J. Spencer 1:f5ac63519541 938
Michael J. Spencer 1:f5ac63519541 939 /* lwip does not support PAM*/
Michael J. Spencer 1:f5ac63519541 940
Michael J. Spencer 1:f5ac63519541 941 #endif /* USE_PAM */
Michael J. Spencer 1:f5ac63519541 942
Michael J. Spencer 1:f5ac63519541 943 #endif /* UNUSED */
Michael J. Spencer 1:f5ac63519541 944
Michael J. Spencer 1:f5ac63519541 945
Michael J. Spencer 1:f5ac63519541 946 #if 0 /* UNUSED */
Michael J. Spencer 1:f5ac63519541 947 /*
Michael J. Spencer 1:f5ac63519541 948 * plogin - Check the user name and password against the system
Michael J. Spencer 1:f5ac63519541 949 * password database, and login the user if OK.
Michael J. Spencer 1:f5ac63519541 950 *
Michael J. Spencer 1:f5ac63519541 951 * returns:
Michael J. Spencer 1:f5ac63519541 952 * UPAP_AUTHNAK: Login failed.
Michael J. Spencer 1:f5ac63519541 953 * UPAP_AUTHACK: Login succeeded.
Michael J. Spencer 1:f5ac63519541 954 * In either case, msg points to an appropriate message.
Michael J. Spencer 1:f5ac63519541 955 */
Michael J. Spencer 1:f5ac63519541 956 static int
Michael J. Spencer 1:f5ac63519541 957 plogin(char *user, char *passwd, char **msg, int *msglen)
Michael J. Spencer 1:f5ac63519541 958 {
Michael J. Spencer 1:f5ac63519541 959
Michael J. Spencer 1:f5ac63519541 960 LWIP_UNUSED_ARG(user);
Michael J. Spencer 1:f5ac63519541 961 LWIP_UNUSED_ARG(passwd);
Michael J. Spencer 1:f5ac63519541 962 LWIP_UNUSED_ARG(msg);
Michael J. Spencer 1:f5ac63519541 963 LWIP_UNUSED_ARG(msglen);
Michael J. Spencer 1:f5ac63519541 964
Michael J. Spencer 1:f5ac63519541 965
Michael J. Spencer 1:f5ac63519541 966 /* The new lines are here align the file when
Michael J. Spencer 1:f5ac63519541 967 * compared against the pppd 2.3.11 code */
Michael J. Spencer 1:f5ac63519541 968
Michael J. Spencer 1:f5ac63519541 969
Michael J. Spencer 1:f5ac63519541 970
Michael J. Spencer 1:f5ac63519541 971
Michael J. Spencer 1:f5ac63519541 972
Michael J. Spencer 1:f5ac63519541 973
Michael J. Spencer 1:f5ac63519541 974
Michael J. Spencer 1:f5ac63519541 975
Michael J. Spencer 1:f5ac63519541 976
Michael J. Spencer 1:f5ac63519541 977
Michael J. Spencer 1:f5ac63519541 978
Michael J. Spencer 1:f5ac63519541 979
Michael J. Spencer 1:f5ac63519541 980
Michael J. Spencer 1:f5ac63519541 981
Michael J. Spencer 1:f5ac63519541 982
Michael J. Spencer 1:f5ac63519541 983
Michael J. Spencer 1:f5ac63519541 984 /* XXX Fail until we decide that we want to support logins. */
Michael J. Spencer 1:f5ac63519541 985 return (UPAP_AUTHNAK);
Michael J. Spencer 1:f5ac63519541 986 }
Michael J. Spencer 1:f5ac63519541 987 #endif
Michael J. Spencer 1:f5ac63519541 988
Michael J. Spencer 1:f5ac63519541 989
Michael J. Spencer 1:f5ac63519541 990
Michael J. Spencer 1:f5ac63519541 991 /*
Michael J. Spencer 1:f5ac63519541 992 * plogout - Logout the user.
Michael J. Spencer 1:f5ac63519541 993 */
Michael J. Spencer 1:f5ac63519541 994 static void
Michael J. Spencer 1:f5ac63519541 995 plogout(void)
Michael J. Spencer 1:f5ac63519541 996 {
Michael J. Spencer 1:f5ac63519541 997 logged_in = 0;
Michael J. Spencer 1:f5ac63519541 998 }
Michael J. Spencer 1:f5ac63519541 999
Michael J. Spencer 1:f5ac63519541 1000 /*
Michael J. Spencer 1:f5ac63519541 1001 * null_login - Check if a username of "" and a password of "" are
Michael J. Spencer 1:f5ac63519541 1002 * acceptable, and iff so, set the list of acceptable IP addresses
Michael J. Spencer 1:f5ac63519541 1003 * and return 1.
Michael J. Spencer 1:f5ac63519541 1004 */
Michael J. Spencer 1:f5ac63519541 1005 static int
Michael J. Spencer 1:f5ac63519541 1006 null_login(int unit)
Michael J. Spencer 1:f5ac63519541 1007 {
Michael J. Spencer 1:f5ac63519541 1008 LWIP_UNUSED_ARG(unit);
Michael J. Spencer 1:f5ac63519541 1009 /* XXX Fail until we decide that we want to support logins. */
Michael J. Spencer 1:f5ac63519541 1010 return 0;
Michael J. Spencer 1:f5ac63519541 1011 }
Michael J. Spencer 1:f5ac63519541 1012
Michael J. Spencer 1:f5ac63519541 1013
Michael J. Spencer 1:f5ac63519541 1014 /*
Michael J. Spencer 1:f5ac63519541 1015 * get_pap_passwd - get a password for authenticating ourselves with
Michael J. Spencer 1:f5ac63519541 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
Michael J. Spencer 1:f5ac63519541 1017 * could be found.
Michael J. Spencer 1:f5ac63519541 1018 */
Michael J. Spencer 1:f5ac63519541 1019 static int
Michael J. Spencer 1:f5ac63519541 1020 get_pap_passwd(int unit, char *user, char *passwd)
Michael J. Spencer 1:f5ac63519541 1021 {
Michael J. Spencer 1:f5ac63519541 1022 LWIP_UNUSED_ARG(unit);
Michael J. Spencer 1:f5ac63519541 1023 /* normally we would reject PAP if no password is provided,
Michael J. Spencer 1:f5ac63519541 1024 but this causes problems with some providers (like CHT in Taiwan)
Michael J. Spencer 1:f5ac63519541 1025 who incorrectly request PAP and expect a bogus/empty password, so
Michael J. Spencer 1:f5ac63519541 1026 always provide a default user/passwd of "none"/"none"
Michael J. Spencer 1:f5ac63519541 1027
Michael J. Spencer 1:f5ac63519541 1028 @todo: This should be configured by the user, instead of being hardcoded here!
Michael J. Spencer 1:f5ac63519541 1029 */
Michael J. Spencer 1:f5ac63519541 1030 if(user) {
Michael J. Spencer 1:f5ac63519541 1031 strcpy(user, "none");
Michael J. Spencer 1:f5ac63519541 1032 }
Michael J. Spencer 1:f5ac63519541 1033 if(passwd) {
Michael J. Spencer 1:f5ac63519541 1034 strcpy(passwd, "none");
Michael J. Spencer 1:f5ac63519541 1035 }
Michael J. Spencer 1:f5ac63519541 1036 return 1;
Michael J. Spencer 1:f5ac63519541 1037 }
Michael J. Spencer 1:f5ac63519541 1038
Michael J. Spencer 1:f5ac63519541 1039 /*
Michael J. Spencer 1:f5ac63519541 1040 * have_pap_secret - check whether we have a PAP file with any
Michael J. Spencer 1:f5ac63519541 1041 * secrets that we could possibly use for authenticating the peer.
Michael J. Spencer 1:f5ac63519541 1042 */
Michael J. Spencer 1:f5ac63519541 1043 static int
Michael J. Spencer 1:f5ac63519541 1044 have_pap_secret(void)
Michael J. Spencer 1:f5ac63519541 1045 {
Michael J. Spencer 1:f5ac63519541 1046 /* XXX Fail until we set up our passwords. */
Michael J. Spencer 1:f5ac63519541 1047 return 0;
Michael J. Spencer 1:f5ac63519541 1048 }
Michael J. Spencer 1:f5ac63519541 1049
Michael J. Spencer 1:f5ac63519541 1050 /*
Michael J. Spencer 1:f5ac63519541 1051 * have_chap_secret - check whether we have a CHAP file with a
Michael J. Spencer 1:f5ac63519541 1052 * secret that we could possibly use for authenticating `client'
Michael J. Spencer 1:f5ac63519541 1053 * on `server'. Either can be the null string, meaning we don't
Michael J. Spencer 1:f5ac63519541 1054 * know the identity yet.
Michael J. Spencer 1:f5ac63519541 1055 */
Michael J. Spencer 1:f5ac63519541 1056 static int
Michael J. Spencer 1:f5ac63519541 1057 have_chap_secret(char *client, char *server, u32_t remote)
Michael J. Spencer 1:f5ac63519541 1058 {
Michael J. Spencer 1:f5ac63519541 1059 LWIP_UNUSED_ARG(client);
Michael J. Spencer 1:f5ac63519541 1060 LWIP_UNUSED_ARG(server);
Michael J. Spencer 1:f5ac63519541 1061 LWIP_UNUSED_ARG(remote);
Michael J. Spencer 1:f5ac63519541 1062
Michael J. Spencer 1:f5ac63519541 1063 /* XXX Fail until we set up our passwords. */
Michael J. Spencer 1:f5ac63519541 1064 return 0;
Michael J. Spencer 1:f5ac63519541 1065 }
Michael J. Spencer 1:f5ac63519541 1066 #if CHAP_SUPPORT
Michael J. Spencer 1:f5ac63519541 1067
Michael J. Spencer 1:f5ac63519541 1068 /*
Michael J. Spencer 1:f5ac63519541 1069 * get_secret - open the CHAP secret file and return the secret
Michael J. Spencer 1:f5ac63519541 1070 * for authenticating the given client on the given server.
Michael J. Spencer 1:f5ac63519541 1071 * (We could be either client or server).
Michael J. Spencer 1:f5ac63519541 1072 */
Michael J. Spencer 1:f5ac63519541 1073 int
Michael J. Spencer 1:f5ac63519541 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
Michael J. Spencer 1:f5ac63519541 1075 {
Michael J. Spencer 1:f5ac63519541 1076 #if 1
Michael J. Spencer 1:f5ac63519541 1077 int len;
Michael J. Spencer 1:f5ac63519541 1078 struct wordlist *addrs;
Michael J. Spencer 1:f5ac63519541 1079
Michael J. Spencer 1:f5ac63519541 1080 LWIP_UNUSED_ARG(unit);
Michael J. Spencer 1:f5ac63519541 1081 LWIP_UNUSED_ARG(server);
Michael J. Spencer 1:f5ac63519541 1082 LWIP_UNUSED_ARG(save_addrs);
Michael J. Spencer 1:f5ac63519541 1083
Michael J. Spencer 1:f5ac63519541 1084 addrs = NULL;
Michael J. Spencer 1:f5ac63519541 1085
Michael J. Spencer 1:f5ac63519541 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
Michael J. Spencer 1:f5ac63519541 1087 return 0;
Michael J. Spencer 1:f5ac63519541 1088 }
Michael J. Spencer 1:f5ac63519541 1089
Michael J. Spencer 1:f5ac63519541 1090 len = (int)strlen(ppp_settings.passwd);
Michael J. Spencer 1:f5ac63519541 1091 if (len > MAXSECRETLEN) {
Michael J. Spencer 1:f5ac63519541 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
Michael J. Spencer 1:f5ac63519541 1093 len = MAXSECRETLEN;
Michael J. Spencer 1:f5ac63519541 1094 }
Michael J. Spencer 1:f5ac63519541 1095
Michael J. Spencer 1:f5ac63519541 1096 BCOPY(ppp_settings.passwd, secret, len);
Michael J. Spencer 1:f5ac63519541 1097 *secret_len = len;
Michael J. Spencer 1:f5ac63519541 1098
Michael J. Spencer 1:f5ac63519541 1099 return 1;
Michael J. Spencer 1:f5ac63519541 1100 #else
Michael J. Spencer 1:f5ac63519541 1101 int ret = 0, len;
Michael J. Spencer 1:f5ac63519541 1102 struct wordlist *addrs;
Michael J. Spencer 1:f5ac63519541 1103 char secbuf[MAXWORDLEN];
Michael J. Spencer 1:f5ac63519541 1104
Michael J. Spencer 1:f5ac63519541 1105 addrs = NULL;
Michael J. Spencer 1:f5ac63519541 1106 secbuf[0] = 0;
Michael J. Spencer 1:f5ac63519541 1107
Michael J. Spencer 1:f5ac63519541 1108 /* XXX Find secret. */
Michael J. Spencer 1:f5ac63519541 1109 if (ret < 0) {
Michael J. Spencer 1:f5ac63519541 1110 return 0;
Michael J. Spencer 1:f5ac63519541 1111 }
Michael J. Spencer 1:f5ac63519541 1112
Michael J. Spencer 1:f5ac63519541 1113 if (save_addrs) {
Michael J. Spencer 1:f5ac63519541 1114 set_allowed_addrs(unit, addrs);
Michael J. Spencer 1:f5ac63519541 1115 }
Michael J. Spencer 1:f5ac63519541 1116
Michael J. Spencer 1:f5ac63519541 1117 len = strlen(secbuf);
Michael J. Spencer 1:f5ac63519541 1118 if (len > MAXSECRETLEN) {
Michael J. Spencer 1:f5ac63519541 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
Michael J. Spencer 1:f5ac63519541 1120 len = MAXSECRETLEN;
Michael J. Spencer 1:f5ac63519541 1121 }
Michael J. Spencer 1:f5ac63519541 1122
Michael J. Spencer 1:f5ac63519541 1123 BCOPY(secbuf, secret, len);
Michael J. Spencer 1:f5ac63519541 1124 BZERO(secbuf, sizeof(secbuf));
Michael J. Spencer 1:f5ac63519541 1125 *secret_len = len;
Michael J. Spencer 1:f5ac63519541 1126
Michael J. Spencer 1:f5ac63519541 1127 return 1;
Michael J. Spencer 1:f5ac63519541 1128 #endif
Michael J. Spencer 1:f5ac63519541 1129 }
Michael J. Spencer 1:f5ac63519541 1130 #endif /* CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 1131
Michael J. Spencer 1:f5ac63519541 1132
Michael J. Spencer 1:f5ac63519541 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 1134 /*
Michael J. Spencer 1:f5ac63519541 1135 * set_allowed_addrs() - set the list of allowed addresses.
Michael J. Spencer 1:f5ac63519541 1136 */
Michael J. Spencer 1:f5ac63519541 1137 static void
Michael J. Spencer 1:f5ac63519541 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
Michael J. Spencer 1:f5ac63519541 1139 {
Michael J. Spencer 1:f5ac63519541 1140 if (addresses[unit] != NULL) {
Michael J. Spencer 1:f5ac63519541 1141 free_wordlist(addresses[unit]);
Michael J. Spencer 1:f5ac63519541 1142 }
Michael J. Spencer 1:f5ac63519541 1143 addresses[unit] = addrs;
Michael J. Spencer 1:f5ac63519541 1144
Michael J. Spencer 1:f5ac63519541 1145 #if 0
Michael J. Spencer 1:f5ac63519541 1146 /*
Michael J. Spencer 1:f5ac63519541 1147 * If there's only one authorized address we might as well
Michael J. Spencer 1:f5ac63519541 1148 * ask our peer for that one right away
Michael J. Spencer 1:f5ac63519541 1149 */
Michael J. Spencer 1:f5ac63519541 1150 if (addrs != NULL && addrs->next == NULL) {
Michael J. Spencer 1:f5ac63519541 1151 char *p = addrs->word;
Michael J. Spencer 1:f5ac63519541 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
Michael J. Spencer 1:f5ac63519541 1153 u32_t a;
Michael J. Spencer 1:f5ac63519541 1154 struct hostent *hp;
Michael J. Spencer 1:f5ac63519541 1155
Michael J. Spencer 1:f5ac63519541 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
Michael J. Spencer 1:f5ac63519541 1157 hp = gethostbyname(p);
Michael J. Spencer 1:f5ac63519541 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
Michael J. Spencer 1:f5ac63519541 1159 a = *(u32_t *)hp->h_addr;
Michael J. Spencer 1:f5ac63519541 1160 } else {
Michael J. Spencer 1:f5ac63519541 1161 a = inet_addr(p);
Michael J. Spencer 1:f5ac63519541 1162 }
Michael J. Spencer 1:f5ac63519541 1163 if (a != (u32_t) -1) {
Michael J. Spencer 1:f5ac63519541 1164 wo->hisaddr = a;
Michael J. Spencer 1:f5ac63519541 1165 }
Michael J. Spencer 1:f5ac63519541 1166 }
Michael J. Spencer 1:f5ac63519541 1167 }
Michael J. Spencer 1:f5ac63519541 1168 #endif
Michael J. Spencer 1:f5ac63519541 1169 }
Michael J. Spencer 1:f5ac63519541 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 1171
Michael J. Spencer 1:f5ac63519541 1172 /*
Michael J. Spencer 1:f5ac63519541 1173 * auth_ip_addr - check whether the peer is authorized to use
Michael J. Spencer 1:f5ac63519541 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
Michael J. Spencer 1:f5ac63519541 1175 */
Michael J. Spencer 1:f5ac63519541 1176 int
Michael J. Spencer 1:f5ac63519541 1177 auth_ip_addr(int unit, u32_t addr)
Michael J. Spencer 1:f5ac63519541 1178 {
Michael J. Spencer 1:f5ac63519541 1179 return ip_addr_check(addr, addresses[unit]);
Michael J. Spencer 1:f5ac63519541 1180 }
Michael J. Spencer 1:f5ac63519541 1181
Michael J. Spencer 1:f5ac63519541 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
Michael J. Spencer 1:f5ac63519541 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
Michael J. Spencer 1:f5ac63519541 1184 {
Michael J. Spencer 1:f5ac63519541 1185 /* don't allow loopback or multicast address */
Michael J. Spencer 1:f5ac63519541 1186 if (bad_ip_adrs(addr)) {
Michael J. Spencer 1:f5ac63519541 1187 return 0;
Michael J. Spencer 1:f5ac63519541 1188 }
Michael J. Spencer 1:f5ac63519541 1189
Michael J. Spencer 1:f5ac63519541 1190 if (addrs == NULL) {
Michael J. Spencer 1:f5ac63519541 1191 return !ppp_settings.auth_required; /* no addresses authorized */
Michael J. Spencer 1:f5ac63519541 1192 }
Michael J. Spencer 1:f5ac63519541 1193
Michael J. Spencer 1:f5ac63519541 1194 /* XXX All other addresses allowed. */
Michael J. Spencer 1:f5ac63519541 1195 return 1;
Michael J. Spencer 1:f5ac63519541 1196 }
Michael J. Spencer 1:f5ac63519541 1197
Michael J. Spencer 1:f5ac63519541 1198 /*
Michael J. Spencer 1:f5ac63519541 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
Michael J. Spencer 1:f5ac63519541 1200 * to use, such as an address in the loopback net or a multicast address.
Michael J. Spencer 1:f5ac63519541 1201 * addr is in network byte order.
Michael J. Spencer 1:f5ac63519541 1202 */
Michael J. Spencer 1:f5ac63519541 1203 int
Michael J. Spencer 1:f5ac63519541 1204 bad_ip_adrs(u32_t addr)
Michael J. Spencer 1:f5ac63519541 1205 {
Michael J. Spencer 1:f5ac63519541 1206 addr = ntohl(addr);
Michael J. Spencer 1:f5ac63519541 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
Michael J. Spencer 1:f5ac63519541 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
Michael J. Spencer 1:f5ac63519541 1209 }
Michael J. Spencer 1:f5ac63519541 1210
Michael J. Spencer 1:f5ac63519541 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 1212 /*
Michael J. Spencer 1:f5ac63519541 1213 * some_ip_ok - check a wordlist to see if it authorizes any
Michael J. Spencer 1:f5ac63519541 1214 * IP address(es).
Michael J. Spencer 1:f5ac63519541 1215 */
Michael J. Spencer 1:f5ac63519541 1216 static int
Michael J. Spencer 1:f5ac63519541 1217 some_ip_ok(struct wordlist *addrs)
Michael J. Spencer 1:f5ac63519541 1218 {
Michael J. Spencer 1:f5ac63519541 1219 for (; addrs != 0; addrs = addrs->next) {
Michael J. Spencer 1:f5ac63519541 1220 if (addrs->word[0] == '-')
Michael J. Spencer 1:f5ac63519541 1221 break;
Michael J. Spencer 1:f5ac63519541 1222 if (addrs->word[0] != '!')
Michael J. Spencer 1:f5ac63519541 1223 return 1; /* some IP address is allowed */
Michael J. Spencer 1:f5ac63519541 1224 }
Michael J. Spencer 1:f5ac63519541 1225 return 0;
Michael J. Spencer 1:f5ac63519541 1226 }
Michael J. Spencer 1:f5ac63519541 1227
Michael J. Spencer 1:f5ac63519541 1228 /*
Michael J. Spencer 1:f5ac63519541 1229 * check_access - complain if a secret file has too-liberal permissions.
Michael J. Spencer 1:f5ac63519541 1230 */
Michael J. Spencer 1:f5ac63519541 1231 static void
Michael J. Spencer 1:f5ac63519541 1232 check_access(FILE *f, char *filename)
Michael J. Spencer 1:f5ac63519541 1233 {
Michael J. Spencer 1:f5ac63519541 1234 struct stat sbuf;
Michael J. Spencer 1:f5ac63519541 1235
Michael J. Spencer 1:f5ac63519541 1236 if (fstat(fileno(f), &sbuf) < 0) {
Michael J. Spencer 1:f5ac63519541 1237 warn("cannot stat secret file %s: %m", filename);
Michael J. Spencer 1:f5ac63519541 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
Michael J. Spencer 1:f5ac63519541 1239 warn("Warning - secret file %s has world and/or group access",
Michael J. Spencer 1:f5ac63519541 1240 filename);
Michael J. Spencer 1:f5ac63519541 1241 }
Michael J. Spencer 1:f5ac63519541 1242 }
Michael J. Spencer 1:f5ac63519541 1243
Michael J. Spencer 1:f5ac63519541 1244
Michael J. Spencer 1:f5ac63519541 1245 /*
Michael J. Spencer 1:f5ac63519541 1246 * scan_authfile - Scan an authorization file for a secret suitable
Michael J. Spencer 1:f5ac63519541 1247 * for authenticating `client' on `server'. The return value is -1
Michael J. Spencer 1:f5ac63519541 1248 * if no secret is found, otherwise >= 0. The return value has
Michael J. Spencer 1:f5ac63519541 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
Michael J. Spencer 1:f5ac63519541 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
Michael J. Spencer 1:f5ac63519541 1251 * Any following words on the line up to a "--" (i.e. address authorization
Michael J. Spencer 1:f5ac63519541 1252 * info) are placed in a wordlist and returned in *addrs. Any
Michael J. Spencer 1:f5ac63519541 1253 * following words (extra options) are placed in a wordlist and
Michael J. Spencer 1:f5ac63519541 1254 * returned in *opts.
Michael J. Spencer 1:f5ac63519541 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
Michael J. Spencer 1:f5ac63519541 1256 */
Michael J. Spencer 1:f5ac63519541 1257 static int
Michael J. Spencer 1:f5ac63519541 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
Michael J. Spencer 1:f5ac63519541 1259 {
Michael J. Spencer 1:f5ac63519541 1260 /* We do not (currently) need this in lwip */
Michael J. Spencer 1:f5ac63519541 1261 return 0; /* dummy */
Michael J. Spencer 1:f5ac63519541 1262 }
Michael J. Spencer 1:f5ac63519541 1263 /*
Michael J. Spencer 1:f5ac63519541 1264 * free_wordlist - release memory allocated for a wordlist.
Michael J. Spencer 1:f5ac63519541 1265 */
Michael J. Spencer 1:f5ac63519541 1266 static void
Michael J. Spencer 1:f5ac63519541 1267 free_wordlist(struct wordlist *wp)
Michael J. Spencer 1:f5ac63519541 1268 {
Michael J. Spencer 1:f5ac63519541 1269 struct wordlist *next;
Michael J. Spencer 1:f5ac63519541 1270
Michael J. Spencer 1:f5ac63519541 1271 while (wp != NULL) {
Michael J. Spencer 1:f5ac63519541 1272 next = wp->next;
Michael J. Spencer 1:f5ac63519541 1273 free(wp);
Michael J. Spencer 1:f5ac63519541 1274 wp = next;
Michael J. Spencer 1:f5ac63519541 1275 }
Michael J. Spencer 1:f5ac63519541 1276 }
Michael J. Spencer 1:f5ac63519541 1277
Michael J. Spencer 1:f5ac63519541 1278 /*
Michael J. Spencer 1:f5ac63519541 1279 * auth_script_done - called when the auth-up or auth-down script
Michael J. Spencer 1:f5ac63519541 1280 * has finished.
Michael J. Spencer 1:f5ac63519541 1281 */
Michael J. Spencer 1:f5ac63519541 1282 static void
Michael J. Spencer 1:f5ac63519541 1283 auth_script_done(void *arg)
Michael J. Spencer 1:f5ac63519541 1284 {
Michael J. Spencer 1:f5ac63519541 1285 auth_script_pid = 0;
Michael J. Spencer 1:f5ac63519541 1286 switch (auth_script_state) {
Michael J. Spencer 1:f5ac63519541 1287 case s_up:
Michael J. Spencer 1:f5ac63519541 1288 if (auth_state == s_down) {
Michael J. Spencer 1:f5ac63519541 1289 auth_script_state = s_down;
Michael J. Spencer 1:f5ac63519541 1290 auth_script(_PATH_AUTHDOWN);
Michael J. Spencer 1:f5ac63519541 1291 }
Michael J. Spencer 1:f5ac63519541 1292 break;
Michael J. Spencer 1:f5ac63519541 1293 case s_down:
Michael J. Spencer 1:f5ac63519541 1294 if (auth_state == s_up) {
Michael J. Spencer 1:f5ac63519541 1295 auth_script_state = s_up;
Michael J. Spencer 1:f5ac63519541 1296 auth_script(_PATH_AUTHUP);
Michael J. Spencer 1:f5ac63519541 1297 }
Michael J. Spencer 1:f5ac63519541 1298 break;
Michael J. Spencer 1:f5ac63519541 1299 }
Michael J. Spencer 1:f5ac63519541 1300 }
Michael J. Spencer 1:f5ac63519541 1301
Michael J. Spencer 1:f5ac63519541 1302 /*
Michael J. Spencer 1:f5ac63519541 1303 * auth_script - execute a script with arguments
Michael J. Spencer 1:f5ac63519541 1304 * interface-name peer-name real-user tty speed
Michael J. Spencer 1:f5ac63519541 1305 */
Michael J. Spencer 1:f5ac63519541 1306 static void
Michael J. Spencer 1:f5ac63519541 1307 auth_script(char *script)
Michael J. Spencer 1:f5ac63519541 1308 {
Michael J. Spencer 1:f5ac63519541 1309 char strspeed[32];
Michael J. Spencer 1:f5ac63519541 1310 struct passwd *pw;
Michael J. Spencer 1:f5ac63519541 1311 char struid[32];
Michael J. Spencer 1:f5ac63519541 1312 char *user_name;
Michael J. Spencer 1:f5ac63519541 1313 char *argv[8];
Michael J. Spencer 1:f5ac63519541 1314
Michael J. Spencer 1:f5ac63519541 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
Michael J. Spencer 1:f5ac63519541 1316 user_name = pw->pw_name;
Michael J. Spencer 1:f5ac63519541 1317 else {
Michael J. Spencer 1:f5ac63519541 1318 slprintf(struid, sizeof(struid), "%d", getuid());
Michael J. Spencer 1:f5ac63519541 1319 user_name = struid;
Michael J. Spencer 1:f5ac63519541 1320 }
Michael J. Spencer 1:f5ac63519541 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
Michael J. Spencer 1:f5ac63519541 1322
Michael J. Spencer 1:f5ac63519541 1323 argv[0] = script;
Michael J. Spencer 1:f5ac63519541 1324 argv[1] = ifname;
Michael J. Spencer 1:f5ac63519541 1325 argv[2] = peer_authname;
Michael J. Spencer 1:f5ac63519541 1326 argv[3] = user_name;
Michael J. Spencer 1:f5ac63519541 1327 argv[4] = devnam;
Michael J. Spencer 1:f5ac63519541 1328 argv[5] = strspeed;
Michael J. Spencer 1:f5ac63519541 1329 argv[6] = NULL;
Michael J. Spencer 1:f5ac63519541 1330
Michael J. Spencer 1:f5ac63519541 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
Michael J. Spencer 1:f5ac63519541 1332 }
Michael J. Spencer 1:f5ac63519541 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
Michael J. Spencer 1:f5ac63519541 1334 #endif /* PPP_SUPPORT */