FBI FRATER / Mbed 2 deprecated InetTest

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NetServices/lwip/netif/ppp/auth.c@0:4edb816d21e1, 2015-10-16 (annotated)

Committer:
ICTFBI
Date:
Fri Oct 16 14:28:26 2015 +0000
Revision:
0:4edb816d21e1
Pre-update 16-10-15

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ICTFBI 0:4edb816d21e1 1 /*****************************************************************************
ICTFBI 0:4edb816d21e1 2 * auth.c - Network Authentication and Phase Control program file.
ICTFBI 0:4edb816d21e1 3 *
ICTFBI 0:4edb816d21e1 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
ICTFBI 0:4edb816d21e1 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
ICTFBI 0:4edb816d21e1 6 *
ICTFBI 0:4edb816d21e1 7 * The authors hereby grant permission to use, copy, modify, distribute,
ICTFBI 0:4edb816d21e1 8 * and license this software and its documentation for any purpose, provided
ICTFBI 0:4edb816d21e1 9 * that existing copyright notices are retained in all copies and that this
ICTFBI 0:4edb816d21e1 10 * notice and the following disclaimer are included verbatim in any
ICTFBI 0:4edb816d21e1 11 * distributions. No written agreement, license, or royalty fee is required
ICTFBI 0:4edb816d21e1 12 * for any of the authorized uses.
ICTFBI 0:4edb816d21e1 13 *
ICTFBI 0:4edb816d21e1 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
ICTFBI 0:4edb816d21e1 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ICTFBI 0:4edb816d21e1 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
ICTFBI 0:4edb816d21e1 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
ICTFBI 0:4edb816d21e1 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
ICTFBI 0:4edb816d21e1 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
ICTFBI 0:4edb816d21e1 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
ICTFBI 0:4edb816d21e1 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
ICTFBI 0:4edb816d21e1 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
ICTFBI 0:4edb816d21e1 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ICTFBI 0:4edb816d21e1 24 *
ICTFBI 0:4edb816d21e1 25 ******************************************************************************
ICTFBI 0:4edb816d21e1 26 * REVISION HISTORY
ICTFBI 0:4edb816d21e1 27 *
ICTFBI 0:4edb816d21e1 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
ICTFBI 0:4edb816d21e1 29 * Ported to lwIP.
ICTFBI 0:4edb816d21e1 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
ICTFBI 0:4edb816d21e1 31 * Ported from public pppd code.
ICTFBI 0:4edb816d21e1 32 *****************************************************************************/
ICTFBI 0:4edb816d21e1 33 /*
ICTFBI 0:4edb816d21e1 34 * auth.c - PPP authentication and phase control.
ICTFBI 0:4edb816d21e1 35 *
ICTFBI 0:4edb816d21e1 36 * Copyright (c) 1993 The Australian National University.
ICTFBI 0:4edb816d21e1 37 * All rights reserved.
ICTFBI 0:4edb816d21e1 38 *
ICTFBI 0:4edb816d21e1 39 * Redistribution and use in source and binary forms are permitted
ICTFBI 0:4edb816d21e1 40 * provided that the above copyright notice and this paragraph are
ICTFBI 0:4edb816d21e1 41 * duplicated in all such forms and that any documentation,
ICTFBI 0:4edb816d21e1 42 * advertising materials, and other materials related to such
ICTFBI 0:4edb816d21e1 43 * distribution and use acknowledge that the software was developed
ICTFBI 0:4edb816d21e1 44 * by the Australian National University. The name of the University
ICTFBI 0:4edb816d21e1 45 * may not be used to endorse or promote products derived from this
ICTFBI 0:4edb816d21e1 46 * software without specific prior written permission.
ICTFBI 0:4edb816d21e1 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
ICTFBI 0:4edb816d21e1 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
ICTFBI 0:4edb816d21e1 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
ICTFBI 0:4edb816d21e1 50 *
ICTFBI 0:4edb816d21e1 51 * Copyright (c) 1989 Carnegie Mellon University.
ICTFBI 0:4edb816d21e1 52 * All rights reserved.
ICTFBI 0:4edb816d21e1 53 *
ICTFBI 0:4edb816d21e1 54 * Redistribution and use in source and binary forms are permitted
ICTFBI 0:4edb816d21e1 55 * provided that the above copyright notice and this paragraph are
ICTFBI 0:4edb816d21e1 56 * duplicated in all such forms and that any documentation,
ICTFBI 0:4edb816d21e1 57 * advertising materials, and other materials related to such
ICTFBI 0:4edb816d21e1 58 * distribution and use acknowledge that the software was developed
ICTFBI 0:4edb816d21e1 59 * by Carnegie Mellon University. The name of the
ICTFBI 0:4edb816d21e1 60 * University may not be used to endorse or promote products derived
ICTFBI 0:4edb816d21e1 61 * from this software without specific prior written permission.
ICTFBI 0:4edb816d21e1 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
ICTFBI 0:4edb816d21e1 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
ICTFBI 0:4edb816d21e1 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
ICTFBI 0:4edb816d21e1 65 */
ICTFBI 0:4edb816d21e1 66
ICTFBI 0:4edb816d21e1 67 #include "lwip/opt.h"
ICTFBI 0:4edb816d21e1 68
ICTFBI 0:4edb816d21e1 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
ICTFBI 0:4edb816d21e1 70
ICTFBI 0:4edb816d21e1 71 #include "ppp.h"
ICTFBI 0:4edb816d21e1 72 #include "pppdebug.h"
ICTFBI 0:4edb816d21e1 73
ICTFBI 0:4edb816d21e1 74 #include "fsm.h"
ICTFBI 0:4edb816d21e1 75 #include "lcp.h"
ICTFBI 0:4edb816d21e1 76 #include "pap.h"
ICTFBI 0:4edb816d21e1 77 #include "chap.h"
ICTFBI 0:4edb816d21e1 78 #include "auth.h"
ICTFBI 0:4edb816d21e1 79 #include "ipcp.h"
ICTFBI 0:4edb816d21e1 80
ICTFBI 0:4edb816d21e1 81 #if CBCP_SUPPORT
ICTFBI 0:4edb816d21e1 82 #include "cbcp.h"
ICTFBI 0:4edb816d21e1 83 #endif /* CBCP_SUPPORT */
ICTFBI 0:4edb816d21e1 84
ICTFBI 0:4edb816d21e1 85 #include "lwip/inet.h"
ICTFBI 0:4edb816d21e1 86
ICTFBI 0:4edb816d21e1 87 #include <string.h>
ICTFBI 0:4edb816d21e1 88
ICTFBI 0:4edb816d21e1 89 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 90 /* Bits in scan_authfile return value */
ICTFBI 0:4edb816d21e1 91 #define NONWILD_SERVER 1
ICTFBI 0:4edb816d21e1 92 #define NONWILD_CLIENT 2
ICTFBI 0:4edb816d21e1 93
ICTFBI 0:4edb816d21e1 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
ICTFBI 0:4edb816d21e1 95 #endif /* UNUSED */
ICTFBI 0:4edb816d21e1 96
ICTFBI 0:4edb816d21e1 97 #if PAP_SUPPORT || CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 98 /* The name by which the peer authenticated itself to us. */
ICTFBI 0:4edb816d21e1 99 static char peer_authname[MAXNAMELEN];
ICTFBI 0:4edb816d21e1 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 101
ICTFBI 0:4edb816d21e1 102 /* Records which authentication operations haven't completed yet. */
ICTFBI 0:4edb816d21e1 103 static int auth_pending[NUM_PPP];
ICTFBI 0:4edb816d21e1 104
ICTFBI 0:4edb816d21e1 105 /* Set if we have successfully called plogin() */
ICTFBI 0:4edb816d21e1 106 static int logged_in;
ICTFBI 0:4edb816d21e1 107
ICTFBI 0:4edb816d21e1 108 /* Set if we have run the /etc/ppp/auth-up script. */
ICTFBI 0:4edb816d21e1 109 static int did_authup; /* @todo, we don't need this in lwip*/
ICTFBI 0:4edb816d21e1 110
ICTFBI 0:4edb816d21e1 111 /* List of addresses which the peer may use. */
ICTFBI 0:4edb816d21e1 112 static struct wordlist *addresses[NUM_PPP];
ICTFBI 0:4edb816d21e1 113
ICTFBI 0:4edb816d21e1 114 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 115 /* Wordlist giving addresses which the peer may use
ICTFBI 0:4edb816d21e1 116 without authenticating itself. */
ICTFBI 0:4edb816d21e1 117 static struct wordlist *noauth_addrs;
ICTFBI 0:4edb816d21e1 118
ICTFBI 0:4edb816d21e1 119 /* Extra options to apply, from the secrets file entry for the peer. */
ICTFBI 0:4edb816d21e1 120 static struct wordlist *extra_options;
ICTFBI 0:4edb816d21e1 121 #endif /* UNUSED */
ICTFBI 0:4edb816d21e1 122
ICTFBI 0:4edb816d21e1 123 /* Number of network protocols which we have opened. */
ICTFBI 0:4edb816d21e1 124 static int num_np_open;
ICTFBI 0:4edb816d21e1 125
ICTFBI 0:4edb816d21e1 126 /* Number of network protocols which have come up. */
ICTFBI 0:4edb816d21e1 127 static int num_np_up;
ICTFBI 0:4edb816d21e1 128
ICTFBI 0:4edb816d21e1 129 #if PAP_SUPPORT || CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
ICTFBI 0:4edb816d21e1 131 static int passwd_from_file;
ICTFBI 0:4edb816d21e1 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 133
ICTFBI 0:4edb816d21e1 134 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 135 /* Set if we require authentication only because we have a default route. */
ICTFBI 0:4edb816d21e1 136 static bool default_auth;
ICTFBI 0:4edb816d21e1 137
ICTFBI 0:4edb816d21e1 138 /* Hook to enable a plugin to control the idle time limit */
ICTFBI 0:4edb816d21e1 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
ICTFBI 0:4edb816d21e1 140
ICTFBI 0:4edb816d21e1 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
ICTFBI 0:4edb816d21e1 142 int (*pap_check_hook) __P((void)) = NULL;
ICTFBI 0:4edb816d21e1 143
ICTFBI 0:4edb816d21e1 144 /* Hook for a plugin to check the PAP user and password */
ICTFBI 0:4edb816d21e1 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
ICTFBI 0:4edb816d21e1 146 struct wordlist **paddrs,
ICTFBI 0:4edb816d21e1 147 struct wordlist **popts)) = NULL;
ICTFBI 0:4edb816d21e1 148
ICTFBI 0:4edb816d21e1 149 /* Hook for a plugin to know about the PAP user logout */
ICTFBI 0:4edb816d21e1 150 void (*pap_logout_hook) __P((void)) = NULL;
ICTFBI 0:4edb816d21e1 151
ICTFBI 0:4edb816d21e1 152 /* Hook for a plugin to get the PAP password for authenticating us */
ICTFBI 0:4edb816d21e1 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
ICTFBI 0:4edb816d21e1 154
ICTFBI 0:4edb816d21e1 155 /*
ICTFBI 0:4edb816d21e1 156 * This is used to ensure that we don't start an auth-up/down
ICTFBI 0:4edb816d21e1 157 * script while one is already running.
ICTFBI 0:4edb816d21e1 158 */
ICTFBI 0:4edb816d21e1 159 enum script_state {
ICTFBI 0:4edb816d21e1 160 s_down,
ICTFBI 0:4edb816d21e1 161 s_up
ICTFBI 0:4edb816d21e1 162 };
ICTFBI 0:4edb816d21e1 163
ICTFBI 0:4edb816d21e1 164 static enum script_state auth_state = s_down;
ICTFBI 0:4edb816d21e1 165 static enum script_state auth_script_state = s_down;
ICTFBI 0:4edb816d21e1 166 static pid_t auth_script_pid = 0;
ICTFBI 0:4edb816d21e1 167
ICTFBI 0:4edb816d21e1 168 /*
ICTFBI 0:4edb816d21e1 169 * Option variables.
ICTFBI 0:4edb816d21e1 170 * lwip: some of these are present in the ppp_settings structure
ICTFBI 0:4edb816d21e1 171 */
ICTFBI 0:4edb816d21e1 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
ICTFBI 0:4edb816d21e1 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
ICTFBI 0:4edb816d21e1 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
ICTFBI 0:4edb816d21e1 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
ICTFBI 0:4edb816d21e1 176 bool usehostname = 0; /* Use hostname for our_name */
ICTFBI 0:4edb816d21e1 177 bool auth_required = 0; /* Always require authentication from peer */
ICTFBI 0:4edb816d21e1 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
ICTFBI 0:4edb816d21e1 179 bool explicit_remote = 0; /* User specified explicit remote name */
ICTFBI 0:4edb816d21e1 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
ICTFBI 0:4edb816d21e1 181
ICTFBI 0:4edb816d21e1 182 #endif /* UNUSED */
ICTFBI 0:4edb816d21e1 183
ICTFBI 0:4edb816d21e1 184 /* Bits in auth_pending[] */
ICTFBI 0:4edb816d21e1 185 #define PAP_WITHPEER 1
ICTFBI 0:4edb816d21e1 186 #define PAP_PEER 2
ICTFBI 0:4edb816d21e1 187 #define CHAP_WITHPEER 4
ICTFBI 0:4edb816d21e1 188 #define CHAP_PEER 8
ICTFBI 0:4edb816d21e1 189
ICTFBI 0:4edb816d21e1 190 /* @todo, move this somewhere */
ICTFBI 0:4edb816d21e1 191 /* Used for storing a sequence of words. Usually malloced. */
ICTFBI 0:4edb816d21e1 192 struct wordlist {
ICTFBI 0:4edb816d21e1 193 struct wordlist *next;
ICTFBI 0:4edb816d21e1 194 char word[1];
ICTFBI 0:4edb816d21e1 195 };
ICTFBI 0:4edb816d21e1 196
ICTFBI 0:4edb816d21e1 197
ICTFBI 0:4edb816d21e1 198 extern char *crypt (const char *, const char *);
ICTFBI 0:4edb816d21e1 199
ICTFBI 0:4edb816d21e1 200 /* Prototypes for procedures local to this file. */
ICTFBI 0:4edb816d21e1 201
ICTFBI 0:4edb816d21e1 202 static void network_phase (int);
ICTFBI 0:4edb816d21e1 203 static void check_idle (void *);
ICTFBI 0:4edb816d21e1 204 static void connect_time_expired (void *);
ICTFBI 0:4edb816d21e1 205 #if 0
ICTFBI 0:4edb816d21e1 206 static int plogin (char *, char *, char **, int *);
ICTFBI 0:4edb816d21e1 207 #endif
ICTFBI 0:4edb816d21e1 208 static void plogout (void);
ICTFBI 0:4edb816d21e1 209 static int null_login (int);
ICTFBI 0:4edb816d21e1 210 static int get_pap_passwd (int, char *, char *);
ICTFBI 0:4edb816d21e1 211 static int have_pap_secret (void);
ICTFBI 0:4edb816d21e1 212 static int have_chap_secret (char *, char *, u32_t);
ICTFBI 0:4edb816d21e1 213 static int ip_addr_check (u32_t, struct wordlist *);
ICTFBI 0:4edb816d21e1 214
ICTFBI 0:4edb816d21e1 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 216 static int scan_authfile (FILE *, char *, char *, char *,
ICTFBI 0:4edb816d21e1 217 struct wordlist **, struct wordlist **,
ICTFBI 0:4edb816d21e1 218 char *);
ICTFBI 0:4edb816d21e1 219 static void free_wordlist (struct wordlist *);
ICTFBI 0:4edb816d21e1 220 static void auth_script (char *);
ICTFBI 0:4edb816d21e1 221 static void auth_script_done (void *);
ICTFBI 0:4edb816d21e1 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
ICTFBI 0:4edb816d21e1 223 static int some_ip_ok (struct wordlist *);
ICTFBI 0:4edb816d21e1 224 static int setupapfile (char **);
ICTFBI 0:4edb816d21e1 225 static int privgroup (char **);
ICTFBI 0:4edb816d21e1 226 static int set_noauth_addr (char **);
ICTFBI 0:4edb816d21e1 227 static void check_access (FILE *, char *);
ICTFBI 0:4edb816d21e1 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 229
ICTFBI 0:4edb816d21e1 230 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 231 /*
ICTFBI 0:4edb816d21e1 232 * Authentication-related options.
ICTFBI 0:4edb816d21e1 233 */
ICTFBI 0:4edb816d21e1 234 option_t auth_options[] = {
ICTFBI 0:4edb816d21e1 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
ICTFBI 0:4edb816d21e1 236 "Require PAP authentication from peer", 1, &auth_required },
ICTFBI 0:4edb816d21e1 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
ICTFBI 0:4edb816d21e1 238 "Require PAP authentication from peer", 1, &auth_required },
ICTFBI 0:4edb816d21e1 239 { "refuse-pap", o_bool, &refuse_pap,
ICTFBI 0:4edb816d21e1 240 "Don't agree to auth to peer with PAP", 1 },
ICTFBI 0:4edb816d21e1 241 { "-pap", o_bool, &refuse_pap,
ICTFBI 0:4edb816d21e1 242 "Don't allow PAP authentication with peer", 1 },
ICTFBI 0:4edb816d21e1 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
ICTFBI 0:4edb816d21e1 244 "Require CHAP authentication from peer", 1, &auth_required },
ICTFBI 0:4edb816d21e1 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
ICTFBI 0:4edb816d21e1 246 "Require CHAP authentication from peer", 1, &auth_required },
ICTFBI 0:4edb816d21e1 247 { "refuse-chap", o_bool, &refuse_chap,
ICTFBI 0:4edb816d21e1 248 "Don't agree to auth to peer with CHAP", 1 },
ICTFBI 0:4edb816d21e1 249 { "-chap", o_bool, &refuse_chap,
ICTFBI 0:4edb816d21e1 250 "Don't allow CHAP authentication with peer", 1 },
ICTFBI 0:4edb816d21e1 251 { "name", o_string, our_name,
ICTFBI 0:4edb816d21e1 252 "Set local name for authentication",
ICTFBI 0:4edb816d21e1 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
ICTFBI 0:4edb816d21e1 254 { "user", o_string, user,
ICTFBI 0:4edb816d21e1 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
ICTFBI 0:4edb816d21e1 256 { "usehostname", o_bool, &usehostname,
ICTFBI 0:4edb816d21e1 257 "Must use hostname for authentication", 1 },
ICTFBI 0:4edb816d21e1 258 { "remotename", o_string, remote_name,
ICTFBI 0:4edb816d21e1 259 "Set remote name for authentication", OPT_STATIC,
ICTFBI 0:4edb816d21e1 260 &explicit_remote, MAXNAMELEN },
ICTFBI 0:4edb816d21e1 261 { "auth", o_bool, &auth_required,
ICTFBI 0:4edb816d21e1 262 "Require authentication from peer", 1 },
ICTFBI 0:4edb816d21e1 263 { "noauth", o_bool, &auth_required,
ICTFBI 0:4edb816d21e1 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
ICTFBI 0:4edb816d21e1 265 { "login", o_bool, &uselogin,
ICTFBI 0:4edb816d21e1 266 "Use system password database for PAP", 1 },
ICTFBI 0:4edb816d21e1 267 { "papcrypt", o_bool, &cryptpap,
ICTFBI 0:4edb816d21e1 268 "PAP passwords are encrypted", 1 },
ICTFBI 0:4edb816d21e1 269 { "+ua", o_special, (void *)setupapfile,
ICTFBI 0:4edb816d21e1 270 "Get PAP user and password from file" },
ICTFBI 0:4edb816d21e1 271 { "password", o_string, passwd,
ICTFBI 0:4edb816d21e1 272 "Password for authenticating us to the peer", OPT_STATIC,
ICTFBI 0:4edb816d21e1 273 NULL, MAXSECRETLEN },
ICTFBI 0:4edb816d21e1 274 { "privgroup", o_special, (void *)privgroup,
ICTFBI 0:4edb816d21e1 275 "Allow group members to use privileged options", OPT_PRIV },
ICTFBI 0:4edb816d21e1 276 { "allow-ip", o_special, (void *)set_noauth_addr,
ICTFBI 0:4edb816d21e1 277 "Set IP address(es) which can be used without authentication",
ICTFBI 0:4edb816d21e1 278 OPT_PRIV },
ICTFBI 0:4edb816d21e1 279 { NULL }
ICTFBI 0:4edb816d21e1 280 };
ICTFBI 0:4edb816d21e1 281 #endif /* UNUSED */
ICTFBI 0:4edb816d21e1 282 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 283 /*
ICTFBI 0:4edb816d21e1 284 * setupapfile - specifies UPAP info for authenticating with peer.
ICTFBI 0:4edb816d21e1 285 */
ICTFBI 0:4edb816d21e1 286 static int
ICTFBI 0:4edb816d21e1 287 setupapfile(char **argv)
ICTFBI 0:4edb816d21e1 288 {
ICTFBI 0:4edb816d21e1 289 FILE * ufile;
ICTFBI 0:4edb816d21e1 290 int l;
ICTFBI 0:4edb816d21e1 291
ICTFBI 0:4edb816d21e1 292 lcp_allowoptions[0].neg_upap = 1;
ICTFBI 0:4edb816d21e1 293
ICTFBI 0:4edb816d21e1 294 /* open user info file */
ICTFBI 0:4edb816d21e1 295 seteuid(getuid());
ICTFBI 0:4edb816d21e1 296 ufile = fopen(*argv, "r");
ICTFBI 0:4edb816d21e1 297 seteuid(0);
ICTFBI 0:4edb816d21e1 298 if (ufile == NULL) {
ICTFBI 0:4edb816d21e1 299 option_error("unable to open user login data file %s", *argv);
ICTFBI 0:4edb816d21e1 300 return 0;
ICTFBI 0:4edb816d21e1 301 }
ICTFBI 0:4edb816d21e1 302 check_access(ufile, *argv);
ICTFBI 0:4edb816d21e1 303
ICTFBI 0:4edb816d21e1 304 /* get username */
ICTFBI 0:4edb816d21e1 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
ICTFBI 0:4edb816d21e1 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
ICTFBI 0:4edb816d21e1 307 option_error("unable to read user login data file %s", *argv);
ICTFBI 0:4edb816d21e1 308 return 0;
ICTFBI 0:4edb816d21e1 309 }
ICTFBI 0:4edb816d21e1 310 fclose(ufile);
ICTFBI 0:4edb816d21e1 311
ICTFBI 0:4edb816d21e1 312 /* get rid of newlines */
ICTFBI 0:4edb816d21e1 313 l = strlen(user);
ICTFBI 0:4edb816d21e1 314 if (l > 0 && user[l-1] == '\n')
ICTFBI 0:4edb816d21e1 315 user[l-1] = 0;
ICTFBI 0:4edb816d21e1 316 l = strlen(passwd);
ICTFBI 0:4edb816d21e1 317 if (l > 0 && passwd[l-1] == '\n')
ICTFBI 0:4edb816d21e1 318 passwd[l-1] = 0;
ICTFBI 0:4edb816d21e1 319
ICTFBI 0:4edb816d21e1 320 return (1);
ICTFBI 0:4edb816d21e1 321 }
ICTFBI 0:4edb816d21e1 322 #endif /* UNUSED */
ICTFBI 0:4edb816d21e1 323
ICTFBI 0:4edb816d21e1 324 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 325 /*
ICTFBI 0:4edb816d21e1 326 * privgroup - allow members of the group to have privileged access.
ICTFBI 0:4edb816d21e1 327 */
ICTFBI 0:4edb816d21e1 328 static int
ICTFBI 0:4edb816d21e1 329 privgroup(char **argv)
ICTFBI 0:4edb816d21e1 330 {
ICTFBI 0:4edb816d21e1 331 struct group *g;
ICTFBI 0:4edb816d21e1 332 int i;
ICTFBI 0:4edb816d21e1 333
ICTFBI 0:4edb816d21e1 334 g = getgrnam(*argv);
ICTFBI 0:4edb816d21e1 335 if (g == 0) {
ICTFBI 0:4edb816d21e1 336 option_error("group %s is unknown", *argv);
ICTFBI 0:4edb816d21e1 337 return 0;
ICTFBI 0:4edb816d21e1 338 }
ICTFBI 0:4edb816d21e1 339 for (i = 0; i < ngroups; ++i) {
ICTFBI 0:4edb816d21e1 340 if (groups[i] == g->gr_gid) {
ICTFBI 0:4edb816d21e1 341 privileged = 1;
ICTFBI 0:4edb816d21e1 342 break;
ICTFBI 0:4edb816d21e1 343 }
ICTFBI 0:4edb816d21e1 344 }
ICTFBI 0:4edb816d21e1 345 return 1;
ICTFBI 0:4edb816d21e1 346 }
ICTFBI 0:4edb816d21e1 347 #endif
ICTFBI 0:4edb816d21e1 348
ICTFBI 0:4edb816d21e1 349 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 350 /*
ICTFBI 0:4edb816d21e1 351 * set_noauth_addr - set address(es) that can be used without authentication.
ICTFBI 0:4edb816d21e1 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
ICTFBI 0:4edb816d21e1 353 */
ICTFBI 0:4edb816d21e1 354 static int
ICTFBI 0:4edb816d21e1 355 set_noauth_addr(char **argv)
ICTFBI 0:4edb816d21e1 356 {
ICTFBI 0:4edb816d21e1 357 char *addr = *argv;
ICTFBI 0:4edb816d21e1 358 int l = strlen(addr);
ICTFBI 0:4edb816d21e1 359 struct wordlist *wp;
ICTFBI 0:4edb816d21e1 360
ICTFBI 0:4edb816d21e1 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
ICTFBI 0:4edb816d21e1 362 if (wp == NULL)
ICTFBI 0:4edb816d21e1 363 novm("allow-ip argument");
ICTFBI 0:4edb816d21e1 364 wp->word = (char *) (wp + 1);
ICTFBI 0:4edb816d21e1 365 wp->next = noauth_addrs;
ICTFBI 0:4edb816d21e1 366 BCOPY(addr, wp->word, l);
ICTFBI 0:4edb816d21e1 367 noauth_addrs = wp;
ICTFBI 0:4edb816d21e1 368 return 1;
ICTFBI 0:4edb816d21e1 369 }
ICTFBI 0:4edb816d21e1 370 #endif /* UNUSED */
ICTFBI 0:4edb816d21e1 371
ICTFBI 0:4edb816d21e1 372 /*
ICTFBI 0:4edb816d21e1 373 * An Open on LCP has requested a change from Dead to Establish phase.
ICTFBI 0:4edb816d21e1 374 * Do what's necessary to bring the physical layer up.
ICTFBI 0:4edb816d21e1 375 */
ICTFBI 0:4edb816d21e1 376 void
ICTFBI 0:4edb816d21e1 377 link_required(int unit)
ICTFBI 0:4edb816d21e1 378 {
ICTFBI 0:4edb816d21e1 379 LWIP_UNUSED_ARG(unit);
ICTFBI 0:4edb816d21e1 380
ICTFBI 0:4edb816d21e1 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
ICTFBI 0:4edb816d21e1 382 }
ICTFBI 0:4edb816d21e1 383
ICTFBI 0:4edb816d21e1 384 /*
ICTFBI 0:4edb816d21e1 385 * LCP has terminated the link; go to the Dead phase and take the
ICTFBI 0:4edb816d21e1 386 * physical layer down.
ICTFBI 0:4edb816d21e1 387 */
ICTFBI 0:4edb816d21e1 388 void
ICTFBI 0:4edb816d21e1 389 link_terminated(int unit)
ICTFBI 0:4edb816d21e1 390 {
ICTFBI 0:4edb816d21e1 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
ICTFBI 0:4edb816d21e1 392 if (lcp_phase[unit] == PHASE_DEAD) {
ICTFBI 0:4edb816d21e1 393 return;
ICTFBI 0:4edb816d21e1 394 }
ICTFBI 0:4edb816d21e1 395 if (logged_in) {
ICTFBI 0:4edb816d21e1 396 plogout();
ICTFBI 0:4edb816d21e1 397 }
ICTFBI 0:4edb816d21e1 398 lcp_phase[unit] = PHASE_DEAD;
ICTFBI 0:4edb816d21e1 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
ICTFBI 0:4edb816d21e1 400 pppLinkTerminated(unit);
ICTFBI 0:4edb816d21e1 401 }
ICTFBI 0:4edb816d21e1 402
ICTFBI 0:4edb816d21e1 403 /*
ICTFBI 0:4edb816d21e1 404 * LCP has gone down; it will either die or try to re-establish.
ICTFBI 0:4edb816d21e1 405 */
ICTFBI 0:4edb816d21e1 406 void
ICTFBI 0:4edb816d21e1 407 link_down(int unit)
ICTFBI 0:4edb816d21e1 408 {
ICTFBI 0:4edb816d21e1 409 int i;
ICTFBI 0:4edb816d21e1 410 struct protent *protp;
ICTFBI 0:4edb816d21e1 411
ICTFBI 0:4edb816d21e1 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
ICTFBI 0:4edb816d21e1 413
ICTFBI 0:4edb816d21e1 414 if (did_authup) {
ICTFBI 0:4edb816d21e1 415 /* XXX Do link down processing. */
ICTFBI 0:4edb816d21e1 416 did_authup = 0;
ICTFBI 0:4edb816d21e1 417 }
ICTFBI 0:4edb816d21e1 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
ICTFBI 0:4edb816d21e1 419 if (!protp->enabled_flag) {
ICTFBI 0:4edb816d21e1 420 continue;
ICTFBI 0:4edb816d21e1 421 }
ICTFBI 0:4edb816d21e1 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
ICTFBI 0:4edb816d21e1 423 (*protp->lowerdown)(unit);
ICTFBI 0:4edb816d21e1 424 }
ICTFBI 0:4edb816d21e1 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
ICTFBI 0:4edb816d21e1 426 (*protp->close)(unit, "LCP down");
ICTFBI 0:4edb816d21e1 427 }
ICTFBI 0:4edb816d21e1 428 }
ICTFBI 0:4edb816d21e1 429 num_np_open = 0; /* number of network protocols we have opened */
ICTFBI 0:4edb816d21e1 430 num_np_up = 0; /* Number of network protocols which have come up */
ICTFBI 0:4edb816d21e1 431
ICTFBI 0:4edb816d21e1 432 if (lcp_phase[unit] != PHASE_DEAD) {
ICTFBI 0:4edb816d21e1 433 lcp_phase[unit] = PHASE_TERMINATE;
ICTFBI 0:4edb816d21e1 434 }
ICTFBI 0:4edb816d21e1 435 pppLinkDown(unit);
ICTFBI 0:4edb816d21e1 436 }
ICTFBI 0:4edb816d21e1 437
ICTFBI 0:4edb816d21e1 438 /*
ICTFBI 0:4edb816d21e1 439 * The link is established.
ICTFBI 0:4edb816d21e1 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
ICTFBI 0:4edb816d21e1 441 */
ICTFBI 0:4edb816d21e1 442 void
ICTFBI 0:4edb816d21e1 443 link_established(int unit)
ICTFBI 0:4edb816d21e1 444 {
ICTFBI 0:4edb816d21e1 445 int auth;
ICTFBI 0:4edb816d21e1 446 int i;
ICTFBI 0:4edb816d21e1 447 struct protent *protp;
ICTFBI 0:4edb816d21e1 448 lcp_options *wo = &lcp_wantoptions[unit];
ICTFBI 0:4edb816d21e1 449 lcp_options *go = &lcp_gotoptions[unit];
ICTFBI 0:4edb816d21e1 450 #if PAP_SUPPORT || CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 451 lcp_options *ho = &lcp_hisoptions[unit];
ICTFBI 0:4edb816d21e1 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 453
ICTFBI 0:4edb816d21e1 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
ICTFBI 0:4edb816d21e1 455 /*
ICTFBI 0:4edb816d21e1 456 * Tell higher-level protocols that LCP is up.
ICTFBI 0:4edb816d21e1 457 */
ICTFBI 0:4edb816d21e1 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
ICTFBI 0:4edb816d21e1 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
ICTFBI 0:4edb816d21e1 460 (*protp->lowerup)(unit);
ICTFBI 0:4edb816d21e1 461 }
ICTFBI 0:4edb816d21e1 462 }
ICTFBI 0:4edb816d21e1 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
ICTFBI 0:4edb816d21e1 464 /*
ICTFBI 0:4edb816d21e1 465 * We wanted the peer to authenticate itself, and it refused:
ICTFBI 0:4edb816d21e1 466 * treat it as though it authenticated with PAP using a username
ICTFBI 0:4edb816d21e1 467 * of "" and a password of "". If that's not OK, boot it out.
ICTFBI 0:4edb816d21e1 468 */
ICTFBI 0:4edb816d21e1 469 if (!wo->neg_upap || !null_login(unit)) {
ICTFBI 0:4edb816d21e1 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
ICTFBI 0:4edb816d21e1 471 lcp_close(unit, "peer refused to authenticate");
ICTFBI 0:4edb816d21e1 472 return;
ICTFBI 0:4edb816d21e1 473 }
ICTFBI 0:4edb816d21e1 474 }
ICTFBI 0:4edb816d21e1 475
ICTFBI 0:4edb816d21e1 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
ICTFBI 0:4edb816d21e1 477 auth = 0;
ICTFBI 0:4edb816d21e1 478 #if CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 479 if (go->neg_chap) {
ICTFBI 0:4edb816d21e1 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
ICTFBI 0:4edb816d21e1 481 auth |= CHAP_PEER;
ICTFBI 0:4edb816d21e1 482 }
ICTFBI 0:4edb816d21e1 483 #endif /* CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 484 #if PAP_SUPPORT && CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 485 else
ICTFBI 0:4edb816d21e1 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 487 #if PAP_SUPPORT
ICTFBI 0:4edb816d21e1 488 if (go->neg_upap) {
ICTFBI 0:4edb816d21e1 489 upap_authpeer(unit);
ICTFBI 0:4edb816d21e1 490 auth |= PAP_PEER;
ICTFBI 0:4edb816d21e1 491 }
ICTFBI 0:4edb816d21e1 492 #endif /* PAP_SUPPORT */
ICTFBI 0:4edb816d21e1 493 #if CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 494 if (ho->neg_chap) {
ICTFBI 0:4edb816d21e1 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
ICTFBI 0:4edb816d21e1 496 auth |= CHAP_WITHPEER;
ICTFBI 0:4edb816d21e1 497 }
ICTFBI 0:4edb816d21e1 498 #endif /* CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 499 #if PAP_SUPPORT && CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 500 else
ICTFBI 0:4edb816d21e1 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 502 #if PAP_SUPPORT
ICTFBI 0:4edb816d21e1 503 if (ho->neg_upap) {
ICTFBI 0:4edb816d21e1 504 if (ppp_settings.passwd[0] == 0) {
ICTFBI 0:4edb816d21e1 505 passwd_from_file = 1;
ICTFBI 0:4edb816d21e1 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
ICTFBI 0:4edb816d21e1 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
ICTFBI 0:4edb816d21e1 508 }
ICTFBI 0:4edb816d21e1 509 }
ICTFBI 0:4edb816d21e1 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
ICTFBI 0:4edb816d21e1 511 auth |= PAP_WITHPEER;
ICTFBI 0:4edb816d21e1 512 }
ICTFBI 0:4edb816d21e1 513 #endif /* PAP_SUPPORT */
ICTFBI 0:4edb816d21e1 514 auth_pending[unit] = auth;
ICTFBI 0:4edb816d21e1 515
ICTFBI 0:4edb816d21e1 516 if (!auth) {
ICTFBI 0:4edb816d21e1 517 network_phase(unit);
ICTFBI 0:4edb816d21e1 518 }
ICTFBI 0:4edb816d21e1 519 }
ICTFBI 0:4edb816d21e1 520
ICTFBI 0:4edb816d21e1 521 /*
ICTFBI 0:4edb816d21e1 522 * Proceed to the network phase.
ICTFBI 0:4edb816d21e1 523 */
ICTFBI 0:4edb816d21e1 524 static void
ICTFBI 0:4edb816d21e1 525 network_phase(int unit)
ICTFBI 0:4edb816d21e1 526 {
ICTFBI 0:4edb816d21e1 527 int i;
ICTFBI 0:4edb816d21e1 528 struct protent *protp;
ICTFBI 0:4edb816d21e1 529 lcp_options *go = &lcp_gotoptions[unit];
ICTFBI 0:4edb816d21e1 530
ICTFBI 0:4edb816d21e1 531 /*
ICTFBI 0:4edb816d21e1 532 * If the peer had to authenticate, run the auth-up script now.
ICTFBI 0:4edb816d21e1 533 */
ICTFBI 0:4edb816d21e1 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
ICTFBI 0:4edb816d21e1 535 /* XXX Do setup for peer authentication. */
ICTFBI 0:4edb816d21e1 536 did_authup = 1;
ICTFBI 0:4edb816d21e1 537 }
ICTFBI 0:4edb816d21e1 538
ICTFBI 0:4edb816d21e1 539 #if CBCP_SUPPORT
ICTFBI 0:4edb816d21e1 540 /*
ICTFBI 0:4edb816d21e1 541 * If we negotiated callback, do it now.
ICTFBI 0:4edb816d21e1 542 */
ICTFBI 0:4edb816d21e1 543 if (go->neg_cbcp) {
ICTFBI 0:4edb816d21e1 544 lcp_phase[unit] = PHASE_CALLBACK;
ICTFBI 0:4edb816d21e1 545 (*cbcp_protent.open)(unit);
ICTFBI 0:4edb816d21e1 546 return;
ICTFBI 0:4edb816d21e1 547 }
ICTFBI 0:4edb816d21e1 548 #endif /* CBCP_SUPPORT */
ICTFBI 0:4edb816d21e1 549
ICTFBI 0:4edb816d21e1 550 lcp_phase[unit] = PHASE_NETWORK;
ICTFBI 0:4edb816d21e1 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
ICTFBI 0:4edb816d21e1 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
ICTFBI 0:4edb816d21e1 553 (*protp->open)(unit);
ICTFBI 0:4edb816d21e1 554 if (protp->protocol != PPP_CCP) {
ICTFBI 0:4edb816d21e1 555 ++num_np_open;
ICTFBI 0:4edb816d21e1 556 }
ICTFBI 0:4edb816d21e1 557 }
ICTFBI 0:4edb816d21e1 558 }
ICTFBI 0:4edb816d21e1 559
ICTFBI 0:4edb816d21e1 560 if (num_np_open == 0) {
ICTFBI 0:4edb816d21e1 561 /* nothing to do */
ICTFBI 0:4edb816d21e1 562 lcp_close(0, "No network protocols running");
ICTFBI 0:4edb816d21e1 563 }
ICTFBI 0:4edb816d21e1 564 }
ICTFBI 0:4edb816d21e1 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
ICTFBI 0:4edb816d21e1 566
ICTFBI 0:4edb816d21e1 567 /*
ICTFBI 0:4edb816d21e1 568 * The peer has failed to authenticate himself using `protocol'.
ICTFBI 0:4edb816d21e1 569 */
ICTFBI 0:4edb816d21e1 570 void
ICTFBI 0:4edb816d21e1 571 auth_peer_fail(int unit, u16_t protocol)
ICTFBI 0:4edb816d21e1 572 {
ICTFBI 0:4edb816d21e1 573 LWIP_UNUSED_ARG(protocol);
ICTFBI 0:4edb816d21e1 574
ICTFBI 0:4edb816d21e1 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
ICTFBI 0:4edb816d21e1 576 /*
ICTFBI 0:4edb816d21e1 577 * Authentication failure: take the link down
ICTFBI 0:4edb816d21e1 578 */
ICTFBI 0:4edb816d21e1 579 lcp_close(unit, "Authentication failed");
ICTFBI 0:4edb816d21e1 580 }
ICTFBI 0:4edb816d21e1 581
ICTFBI 0:4edb816d21e1 582
ICTFBI 0:4edb816d21e1 583 #if PAP_SUPPORT || CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 584 /*
ICTFBI 0:4edb816d21e1 585 * The peer has been successfully authenticated using `protocol'.
ICTFBI 0:4edb816d21e1 586 */
ICTFBI 0:4edb816d21e1 587 void
ICTFBI 0:4edb816d21e1 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
ICTFBI 0:4edb816d21e1 589 {
ICTFBI 0:4edb816d21e1 590 int pbit;
ICTFBI 0:4edb816d21e1 591
ICTFBI 0:4edb816d21e1 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
ICTFBI 0:4edb816d21e1 593 switch (protocol) {
ICTFBI 0:4edb816d21e1 594 case PPP_CHAP:
ICTFBI 0:4edb816d21e1 595 pbit = CHAP_PEER;
ICTFBI 0:4edb816d21e1 596 break;
ICTFBI 0:4edb816d21e1 597 case PPP_PAP:
ICTFBI 0:4edb816d21e1 598 pbit = PAP_PEER;
ICTFBI 0:4edb816d21e1 599 break;
ICTFBI 0:4edb816d21e1 600 default:
ICTFBI 0:4edb816d21e1 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
ICTFBI 0:4edb816d21e1 602 return;
ICTFBI 0:4edb816d21e1 603 }
ICTFBI 0:4edb816d21e1 604
ICTFBI 0:4edb816d21e1 605 /*
ICTFBI 0:4edb816d21e1 606 * Save the authenticated name of the peer for later.
ICTFBI 0:4edb816d21e1 607 */
ICTFBI 0:4edb816d21e1 608 if (namelen > (int)sizeof(peer_authname) - 1) {
ICTFBI 0:4edb816d21e1 609 namelen = sizeof(peer_authname) - 1;
ICTFBI 0:4edb816d21e1 610 }
ICTFBI 0:4edb816d21e1 611 BCOPY(name, peer_authname, namelen);
ICTFBI 0:4edb816d21e1 612 peer_authname[namelen] = 0;
ICTFBI 0:4edb816d21e1 613
ICTFBI 0:4edb816d21e1 614 /*
ICTFBI 0:4edb816d21e1 615 * If there is no more authentication still to be done,
ICTFBI 0:4edb816d21e1 616 * proceed to the network (or callback) phase.
ICTFBI 0:4edb816d21e1 617 */
ICTFBI 0:4edb816d21e1 618 if ((auth_pending[unit] &= ~pbit) == 0) {
ICTFBI 0:4edb816d21e1 619 network_phase(unit);
ICTFBI 0:4edb816d21e1 620 }
ICTFBI 0:4edb816d21e1 621 }
ICTFBI 0:4edb816d21e1 622
ICTFBI 0:4edb816d21e1 623 /*
ICTFBI 0:4edb816d21e1 624 * We have failed to authenticate ourselves to the peer using `protocol'.
ICTFBI 0:4edb816d21e1 625 */
ICTFBI 0:4edb816d21e1 626 void
ICTFBI 0:4edb816d21e1 627 auth_withpeer_fail(int unit, u16_t protocol)
ICTFBI 0:4edb816d21e1 628 {
ICTFBI 0:4edb816d21e1 629 int errCode = PPPERR_AUTHFAIL;
ICTFBI 0:4edb816d21e1 630
ICTFBI 0:4edb816d21e1 631 LWIP_UNUSED_ARG(protocol);
ICTFBI 0:4edb816d21e1 632
ICTFBI 0:4edb816d21e1 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
ICTFBI 0:4edb816d21e1 634 if (passwd_from_file) {
ICTFBI 0:4edb816d21e1 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
ICTFBI 0:4edb816d21e1 636 }
ICTFBI 0:4edb816d21e1 637
ICTFBI 0:4edb816d21e1 638 /*
ICTFBI 0:4edb816d21e1 639 * We've failed to authenticate ourselves to our peer.
ICTFBI 0:4edb816d21e1 640 * He'll probably take the link down, and there's not much
ICTFBI 0:4edb816d21e1 641 * we can do except wait for that.
ICTFBI 0:4edb816d21e1 642 */
ICTFBI 0:4edb816d21e1 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
ICTFBI 0:4edb816d21e1 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
ICTFBI 0:4edb816d21e1 645 }
ICTFBI 0:4edb816d21e1 646
ICTFBI 0:4edb816d21e1 647 /*
ICTFBI 0:4edb816d21e1 648 * We have successfully authenticated ourselves with the peer using `protocol'.
ICTFBI 0:4edb816d21e1 649 */
ICTFBI 0:4edb816d21e1 650 void
ICTFBI 0:4edb816d21e1 651 auth_withpeer_success(int unit, u16_t protocol)
ICTFBI 0:4edb816d21e1 652 {
ICTFBI 0:4edb816d21e1 653 int pbit;
ICTFBI 0:4edb816d21e1 654
ICTFBI 0:4edb816d21e1 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
ICTFBI 0:4edb816d21e1 656 switch (protocol) {
ICTFBI 0:4edb816d21e1 657 case PPP_CHAP:
ICTFBI 0:4edb816d21e1 658 pbit = CHAP_WITHPEER;
ICTFBI 0:4edb816d21e1 659 break;
ICTFBI 0:4edb816d21e1 660 case PPP_PAP:
ICTFBI 0:4edb816d21e1 661 if (passwd_from_file) {
ICTFBI 0:4edb816d21e1 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
ICTFBI 0:4edb816d21e1 663 }
ICTFBI 0:4edb816d21e1 664 pbit = PAP_WITHPEER;
ICTFBI 0:4edb816d21e1 665 break;
ICTFBI 0:4edb816d21e1 666 default:
ICTFBI 0:4edb816d21e1 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
ICTFBI 0:4edb816d21e1 668 pbit = 0;
ICTFBI 0:4edb816d21e1 669 }
ICTFBI 0:4edb816d21e1 670
ICTFBI 0:4edb816d21e1 671 /*
ICTFBI 0:4edb816d21e1 672 * If there is no more authentication still being done,
ICTFBI 0:4edb816d21e1 673 * proceed to the network (or callback) phase.
ICTFBI 0:4edb816d21e1 674 */
ICTFBI 0:4edb816d21e1 675 if ((auth_pending[unit] &= ~pbit) == 0) {
ICTFBI 0:4edb816d21e1 676 network_phase(unit);
ICTFBI 0:4edb816d21e1 677 }
ICTFBI 0:4edb816d21e1 678 }
ICTFBI 0:4edb816d21e1 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 680
ICTFBI 0:4edb816d21e1 681
ICTFBI 0:4edb816d21e1 682 /*
ICTFBI 0:4edb816d21e1 683 * np_up - a network protocol has come up.
ICTFBI 0:4edb816d21e1 684 */
ICTFBI 0:4edb816d21e1 685 void
ICTFBI 0:4edb816d21e1 686 np_up(int unit, u16_t proto)
ICTFBI 0:4edb816d21e1 687 {
ICTFBI 0:4edb816d21e1 688 LWIP_UNUSED_ARG(unit);
ICTFBI 0:4edb816d21e1 689 LWIP_UNUSED_ARG(proto);
ICTFBI 0:4edb816d21e1 690
ICTFBI 0:4edb816d21e1 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
ICTFBI 0:4edb816d21e1 692 if (num_np_up == 0) {
ICTFBI 0:4edb816d21e1 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
ICTFBI 0:4edb816d21e1 694 /*
ICTFBI 0:4edb816d21e1 695 * At this point we consider that the link has come up successfully.
ICTFBI 0:4edb816d21e1 696 */
ICTFBI 0:4edb816d21e1 697 if (ppp_settings.idle_time_limit > 0) {
ICTFBI 0:4edb816d21e1 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
ICTFBI 0:4edb816d21e1 699 }
ICTFBI 0:4edb816d21e1 700
ICTFBI 0:4edb816d21e1 701 /*
ICTFBI 0:4edb816d21e1 702 * Set a timeout to close the connection once the maximum
ICTFBI 0:4edb816d21e1 703 * connect time has expired.
ICTFBI 0:4edb816d21e1 704 */
ICTFBI 0:4edb816d21e1 705 if (ppp_settings.maxconnect > 0) {
ICTFBI 0:4edb816d21e1 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
ICTFBI 0:4edb816d21e1 707 }
ICTFBI 0:4edb816d21e1 708 }
ICTFBI 0:4edb816d21e1 709 ++num_np_up;
ICTFBI 0:4edb816d21e1 710 }
ICTFBI 0:4edb816d21e1 711
ICTFBI 0:4edb816d21e1 712 /*
ICTFBI 0:4edb816d21e1 713 * np_down - a network protocol has gone down.
ICTFBI 0:4edb816d21e1 714 */
ICTFBI 0:4edb816d21e1 715 void
ICTFBI 0:4edb816d21e1 716 np_down(int unit, u16_t proto)
ICTFBI 0:4edb816d21e1 717 {
ICTFBI 0:4edb816d21e1 718 LWIP_UNUSED_ARG(unit);
ICTFBI 0:4edb816d21e1 719 LWIP_UNUSED_ARG(proto);
ICTFBI 0:4edb816d21e1 720
ICTFBI 0:4edb816d21e1 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
ICTFBI 0:4edb816d21e1 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
ICTFBI 0:4edb816d21e1 723 UNTIMEOUT(check_idle, NULL);
ICTFBI 0:4edb816d21e1 724 }
ICTFBI 0:4edb816d21e1 725 }
ICTFBI 0:4edb816d21e1 726
ICTFBI 0:4edb816d21e1 727 /*
ICTFBI 0:4edb816d21e1 728 * np_finished - a network protocol has finished using the link.
ICTFBI 0:4edb816d21e1 729 */
ICTFBI 0:4edb816d21e1 730 void
ICTFBI 0:4edb816d21e1 731 np_finished(int unit, u16_t proto)
ICTFBI 0:4edb816d21e1 732 {
ICTFBI 0:4edb816d21e1 733 LWIP_UNUSED_ARG(unit);
ICTFBI 0:4edb816d21e1 734 LWIP_UNUSED_ARG(proto);
ICTFBI 0:4edb816d21e1 735
ICTFBI 0:4edb816d21e1 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
ICTFBI 0:4edb816d21e1 737 if (--num_np_open <= 0) {
ICTFBI 0:4edb816d21e1 738 /* no further use for the link: shut up shop. */
ICTFBI 0:4edb816d21e1 739 lcp_close(0, "No network protocols running");
ICTFBI 0:4edb816d21e1 740 }
ICTFBI 0:4edb816d21e1 741 }
ICTFBI 0:4edb816d21e1 742
ICTFBI 0:4edb816d21e1 743 /*
ICTFBI 0:4edb816d21e1 744 * check_idle - check whether the link has been idle for long
ICTFBI 0:4edb816d21e1 745 * enough that we can shut it down.
ICTFBI 0:4edb816d21e1 746 */
ICTFBI 0:4edb816d21e1 747 static void
ICTFBI 0:4edb816d21e1 748 check_idle(void *arg)
ICTFBI 0:4edb816d21e1 749 {
ICTFBI 0:4edb816d21e1 750 struct ppp_idle idle;
ICTFBI 0:4edb816d21e1 751 u_short itime;
ICTFBI 0:4edb816d21e1 752
ICTFBI 0:4edb816d21e1 753 LWIP_UNUSED_ARG(arg);
ICTFBI 0:4edb816d21e1 754 if (!get_idle_time(0, &idle)) {
ICTFBI 0:4edb816d21e1 755 return;
ICTFBI 0:4edb816d21e1 756 }
ICTFBI 0:4edb816d21e1 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
ICTFBI 0:4edb816d21e1 758 if (itime >= ppp_settings.idle_time_limit) {
ICTFBI 0:4edb816d21e1 759 /* link is idle: shut it down. */
ICTFBI 0:4edb816d21e1 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
ICTFBI 0:4edb816d21e1 761 lcp_close(0, "Link inactive");
ICTFBI 0:4edb816d21e1 762 } else {
ICTFBI 0:4edb816d21e1 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
ICTFBI 0:4edb816d21e1 764 }
ICTFBI 0:4edb816d21e1 765 }
ICTFBI 0:4edb816d21e1 766
ICTFBI 0:4edb816d21e1 767 /*
ICTFBI 0:4edb816d21e1 768 * connect_time_expired - log a message and close the connection.
ICTFBI 0:4edb816d21e1 769 */
ICTFBI 0:4edb816d21e1 770 static void
ICTFBI 0:4edb816d21e1 771 connect_time_expired(void *arg)
ICTFBI 0:4edb816d21e1 772 {
ICTFBI 0:4edb816d21e1 773 LWIP_UNUSED_ARG(arg);
ICTFBI 0:4edb816d21e1 774
ICTFBI 0:4edb816d21e1 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
ICTFBI 0:4edb816d21e1 776 lcp_close(0, "Connect time expired"); /* Close connection */
ICTFBI 0:4edb816d21e1 777 }
ICTFBI 0:4edb816d21e1 778
ICTFBI 0:4edb816d21e1 779 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 780 /*
ICTFBI 0:4edb816d21e1 781 * auth_check_options - called to check authentication options.
ICTFBI 0:4edb816d21e1 782 */
ICTFBI 0:4edb816d21e1 783 void
ICTFBI 0:4edb816d21e1 784 auth_check_options(void)
ICTFBI 0:4edb816d21e1 785 {
ICTFBI 0:4edb816d21e1 786 lcp_options *wo = &lcp_wantoptions[0];
ICTFBI 0:4edb816d21e1 787 int can_auth;
ICTFBI 0:4edb816d21e1 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
ICTFBI 0:4edb816d21e1 789 u32_t remote;
ICTFBI 0:4edb816d21e1 790
ICTFBI 0:4edb816d21e1 791 /* Default our_name to hostname, and user to our_name */
ICTFBI 0:4edb816d21e1 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
ICTFBI 0:4edb816d21e1 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
ICTFBI 0:4edb816d21e1 794 }
ICTFBI 0:4edb816d21e1 795
ICTFBI 0:4edb816d21e1 796 if (ppp_settings.user[0] == 0) {
ICTFBI 0:4edb816d21e1 797 strcpy(ppp_settings.user, ppp_settings.our_name);
ICTFBI 0:4edb816d21e1 798 }
ICTFBI 0:4edb816d21e1 799
ICTFBI 0:4edb816d21e1 800 /* If authentication is required, ask peer for CHAP or PAP. */
ICTFBI 0:4edb816d21e1 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
ICTFBI 0:4edb816d21e1 802 wo->neg_chap = 1;
ICTFBI 0:4edb816d21e1 803 wo->neg_upap = 1;
ICTFBI 0:4edb816d21e1 804 }
ICTFBI 0:4edb816d21e1 805
ICTFBI 0:4edb816d21e1 806 /*
ICTFBI 0:4edb816d21e1 807 * Check whether we have appropriate secrets to use
ICTFBI 0:4edb816d21e1 808 * to authenticate the peer.
ICTFBI 0:4edb816d21e1 809 */
ICTFBI 0:4edb816d21e1 810 can_auth = wo->neg_upap && have_pap_secret();
ICTFBI 0:4edb816d21e1 811 if (!can_auth && wo->neg_chap) {
ICTFBI 0:4edb816d21e1 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
ICTFBI 0:4edb816d21e1 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
ICTFBI 0:4edb816d21e1 814 }
ICTFBI 0:4edb816d21e1 815
ICTFBI 0:4edb816d21e1 816 if (ppp_settings.auth_required && !can_auth) {
ICTFBI 0:4edb816d21e1 817 ppp_panic("No auth secret");
ICTFBI 0:4edb816d21e1 818 }
ICTFBI 0:4edb816d21e1 819 }
ICTFBI 0:4edb816d21e1 820 #endif /* UNUSED */
ICTFBI 0:4edb816d21e1 821
ICTFBI 0:4edb816d21e1 822 /*
ICTFBI 0:4edb816d21e1 823 * auth_reset - called when LCP is starting negotiations to recheck
ICTFBI 0:4edb816d21e1 824 * authentication options, i.e. whether we have appropriate secrets
ICTFBI 0:4edb816d21e1 825 * to use for authenticating ourselves and/or the peer.
ICTFBI 0:4edb816d21e1 826 */
ICTFBI 0:4edb816d21e1 827 void
ICTFBI 0:4edb816d21e1 828 auth_reset(int unit)
ICTFBI 0:4edb816d21e1 829 {
ICTFBI 0:4edb816d21e1 830 lcp_options *go = &lcp_gotoptions[unit];
ICTFBI 0:4edb816d21e1 831 lcp_options *ao = &lcp_allowoptions[0];
ICTFBI 0:4edb816d21e1 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
ICTFBI 0:4edb816d21e1 833 u32_t remote;
ICTFBI 0:4edb816d21e1 834
ICTFBI 0:4edb816d21e1 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
ICTFBI 0:4edb816d21e1 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
ICTFBI 0:4edb816d21e1 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)*/;
ICTFBI 0:4edb816d21e1 838
ICTFBI 0:4edb816d21e1 839 if (go->neg_upap && !have_pap_secret()) {
ICTFBI 0:4edb816d21e1 840 go->neg_upap = 0;
ICTFBI 0:4edb816d21e1 841 }
ICTFBI 0:4edb816d21e1 842 if (go->neg_chap) {
ICTFBI 0:4edb816d21e1 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
ICTFBI 0:4edb816d21e1 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
ICTFBI 0:4edb816d21e1 845 go->neg_chap = 0;
ICTFBI 0:4edb816d21e1 846 }
ICTFBI 0:4edb816d21e1 847 }
ICTFBI 0:4edb816d21e1 848 }
ICTFBI 0:4edb816d21e1 849
ICTFBI 0:4edb816d21e1 850 #if PAP_SUPPORT
ICTFBI 0:4edb816d21e1 851 /*
ICTFBI 0:4edb816d21e1 852 * check_passwd - Check the user name and passwd against the PAP secrets
ICTFBI 0:4edb816d21e1 853 * file. If requested, also check against the system password database,
ICTFBI 0:4edb816d21e1 854 * and login the user if OK.
ICTFBI 0:4edb816d21e1 855 *
ICTFBI 0:4edb816d21e1 856 * returns:
ICTFBI 0:4edb816d21e1 857 * UPAP_AUTHNAK: Authentication failed.
ICTFBI 0:4edb816d21e1 858 * UPAP_AUTHACK: Authentication succeeded.
ICTFBI 0:4edb816d21e1 859 * In either case, msg points to an appropriate message.
ICTFBI 0:4edb816d21e1 860 */
ICTFBI 0:4edb816d21e1 861 u_char
ICTFBI 0:4edb816d21e1 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
ICTFBI 0:4edb816d21e1 863 {
ICTFBI 0:4edb816d21e1 864 #if 1 /* XXX Assume all entries OK. */
ICTFBI 0:4edb816d21e1 865 LWIP_UNUSED_ARG(unit);
ICTFBI 0:4edb816d21e1 866 LWIP_UNUSED_ARG(auser);
ICTFBI 0:4edb816d21e1 867 LWIP_UNUSED_ARG(userlen);
ICTFBI 0:4edb816d21e1 868 LWIP_UNUSED_ARG(apasswd);
ICTFBI 0:4edb816d21e1 869 LWIP_UNUSED_ARG(passwdlen);
ICTFBI 0:4edb816d21e1 870 LWIP_UNUSED_ARG(msglen);
ICTFBI 0:4edb816d21e1 871 *msg = (char *) 0;
ICTFBI 0:4edb816d21e1 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
ICTFBI 0:4edb816d21e1 873 #else
ICTFBI 0:4edb816d21e1 874 u_char ret = 0;
ICTFBI 0:4edb816d21e1 875 struct wordlist *addrs = NULL;
ICTFBI 0:4edb816d21e1 876 char passwd[256], user[256];
ICTFBI 0:4edb816d21e1 877 char secret[MAXWORDLEN];
ICTFBI 0:4edb816d21e1 878 static u_short attempts = 0;
ICTFBI 0:4edb816d21e1 879
ICTFBI 0:4edb816d21e1 880 /*
ICTFBI 0:4edb816d21e1 881 * Make copies of apasswd and auser, then null-terminate them.
ICTFBI 0:4edb816d21e1 882 */
ICTFBI 0:4edb816d21e1 883 BCOPY(apasswd, passwd, passwdlen);
ICTFBI 0:4edb816d21e1 884 passwd[passwdlen] = '\0';
ICTFBI 0:4edb816d21e1 885 BCOPY(auser, user, userlen);
ICTFBI 0:4edb816d21e1 886 user[userlen] = '\0';
ICTFBI 0:4edb816d21e1 887 *msg = (char *) 0;
ICTFBI 0:4edb816d21e1 888
ICTFBI 0:4edb816d21e1 889 /* XXX Validate user name and password. */
ICTFBI 0:4edb816d21e1 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
ICTFBI 0:4edb816d21e1 891
ICTFBI 0:4edb816d21e1 892 if (ret == UPAP_AUTHNAK) {
ICTFBI 0:4edb816d21e1 893 if (*msg == (char *) 0) {
ICTFBI 0:4edb816d21e1 894 *msg = "Login incorrect";
ICTFBI 0:4edb816d21e1 895 }
ICTFBI 0:4edb816d21e1 896 *msglen = strlen(*msg);
ICTFBI 0:4edb816d21e1 897 /*
ICTFBI 0:4edb816d21e1 898 * Frustrate passwd stealer programs.
ICTFBI 0:4edb816d21e1 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
ICTFBI 0:4edb816d21e1 900 * On 10'th, drop the connection.
ICTFBI 0:4edb816d21e1 901 */
ICTFBI 0:4edb816d21e1 902 if (attempts++ >= 10) {
ICTFBI 0:4edb816d21e1 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
ICTFBI 0:4edb816d21e1 904 /*ppp_panic("Excess Bad Logins");*/
ICTFBI 0:4edb816d21e1 905 }
ICTFBI 0:4edb816d21e1 906 if (attempts > 3) {
ICTFBI 0:4edb816d21e1 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
ICTFBI 0:4edb816d21e1 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
ICTFBI 0:4edb816d21e1 909 */
ICTFBI 0:4edb816d21e1 910 /*sys_msleep((attempts - 3) * 5);*/
ICTFBI 0:4edb816d21e1 911 }
ICTFBI 0:4edb816d21e1 912 if (addrs != NULL) {
ICTFBI 0:4edb816d21e1 913 free_wordlist(addrs);
ICTFBI 0:4edb816d21e1 914 }
ICTFBI 0:4edb816d21e1 915 } else {
ICTFBI 0:4edb816d21e1 916 attempts = 0; /* Reset count */
ICTFBI 0:4edb816d21e1 917 if (*msg == (char *) 0) {
ICTFBI 0:4edb816d21e1 918 *msg = "Login ok";
ICTFBI 0:4edb816d21e1 919 }
ICTFBI 0:4edb816d21e1 920 *msglen = strlen(*msg);
ICTFBI 0:4edb816d21e1 921 set_allowed_addrs(unit, addrs);
ICTFBI 0:4edb816d21e1 922 }
ICTFBI 0:4edb816d21e1 923
ICTFBI 0:4edb816d21e1 924 BZERO(passwd, sizeof(passwd));
ICTFBI 0:4edb816d21e1 925 BZERO(secret, sizeof(secret));
ICTFBI 0:4edb816d21e1 926
ICTFBI 0:4edb816d21e1 927 return ret;
ICTFBI 0:4edb816d21e1 928 #endif
ICTFBI 0:4edb816d21e1 929 }
ICTFBI 0:4edb816d21e1 930 #endif /* PAP_SUPPORT */
ICTFBI 0:4edb816d21e1 931
ICTFBI 0:4edb816d21e1 932 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 933 /*
ICTFBI 0:4edb816d21e1 934 * This function is needed for PAM.
ICTFBI 0:4edb816d21e1 935 */
ICTFBI 0:4edb816d21e1 936
ICTFBI 0:4edb816d21e1 937 #ifdef USE_PAM
ICTFBI 0:4edb816d21e1 938
ICTFBI 0:4edb816d21e1 939 /* lwip does not support PAM*/
ICTFBI 0:4edb816d21e1 940
ICTFBI 0:4edb816d21e1 941 #endif /* USE_PAM */
ICTFBI 0:4edb816d21e1 942
ICTFBI 0:4edb816d21e1 943 #endif /* UNUSED */
ICTFBI 0:4edb816d21e1 944
ICTFBI 0:4edb816d21e1 945
ICTFBI 0:4edb816d21e1 946 #if 0 /* UNUSED */
ICTFBI 0:4edb816d21e1 947 /*
ICTFBI 0:4edb816d21e1 948 * plogin - Check the user name and password against the system
ICTFBI 0:4edb816d21e1 949 * password database, and login the user if OK.
ICTFBI 0:4edb816d21e1 950 *
ICTFBI 0:4edb816d21e1 951 * returns:
ICTFBI 0:4edb816d21e1 952 * UPAP_AUTHNAK: Login failed.
ICTFBI 0:4edb816d21e1 953 * UPAP_AUTHACK: Login succeeded.
ICTFBI 0:4edb816d21e1 954 * In either case, msg points to an appropriate message.
ICTFBI 0:4edb816d21e1 955 */
ICTFBI 0:4edb816d21e1 956 static int
ICTFBI 0:4edb816d21e1 957 plogin(char *user, char *passwd, char **msg, int *msglen)
ICTFBI 0:4edb816d21e1 958 {
ICTFBI 0:4edb816d21e1 959
ICTFBI 0:4edb816d21e1 960 LWIP_UNUSED_ARG(user);
ICTFBI 0:4edb816d21e1 961 LWIP_UNUSED_ARG(passwd);
ICTFBI 0:4edb816d21e1 962 LWIP_UNUSED_ARG(msg);
ICTFBI 0:4edb816d21e1 963 LWIP_UNUSED_ARG(msglen);
ICTFBI 0:4edb816d21e1 964
ICTFBI 0:4edb816d21e1 965
ICTFBI 0:4edb816d21e1 966 /* The new lines are here align the file when
ICTFBI 0:4edb816d21e1 967 * compared against the pppd 2.3.11 code */
ICTFBI 0:4edb816d21e1 968
ICTFBI 0:4edb816d21e1 969
ICTFBI 0:4edb816d21e1 970
ICTFBI 0:4edb816d21e1 971
ICTFBI 0:4edb816d21e1 972
ICTFBI 0:4edb816d21e1 973
ICTFBI 0:4edb816d21e1 974
ICTFBI 0:4edb816d21e1 975
ICTFBI 0:4edb816d21e1 976
ICTFBI 0:4edb816d21e1 977
ICTFBI 0:4edb816d21e1 978
ICTFBI 0:4edb816d21e1 979
ICTFBI 0:4edb816d21e1 980
ICTFBI 0:4edb816d21e1 981
ICTFBI 0:4edb816d21e1 982
ICTFBI 0:4edb816d21e1 983
ICTFBI 0:4edb816d21e1 984 /* XXX Fail until we decide that we want to support logins. */
ICTFBI 0:4edb816d21e1 985 return (UPAP_AUTHNAK);
ICTFBI 0:4edb816d21e1 986 }
ICTFBI 0:4edb816d21e1 987 #endif
ICTFBI 0:4edb816d21e1 988
ICTFBI 0:4edb816d21e1 989
ICTFBI 0:4edb816d21e1 990
ICTFBI 0:4edb816d21e1 991 /*
ICTFBI 0:4edb816d21e1 992 * plogout - Logout the user.
ICTFBI 0:4edb816d21e1 993 */
ICTFBI 0:4edb816d21e1 994 static void
ICTFBI 0:4edb816d21e1 995 plogout(void)
ICTFBI 0:4edb816d21e1 996 {
ICTFBI 0:4edb816d21e1 997 logged_in = 0;
ICTFBI 0:4edb816d21e1 998 }
ICTFBI 0:4edb816d21e1 999
ICTFBI 0:4edb816d21e1 1000 /*
ICTFBI 0:4edb816d21e1 1001 * null_login - Check if a username of "" and a password of "" are
ICTFBI 0:4edb816d21e1 1002 * acceptable, and iff so, set the list of acceptable IP addresses
ICTFBI 0:4edb816d21e1 1003 * and return 1.
ICTFBI 0:4edb816d21e1 1004 */
ICTFBI 0:4edb816d21e1 1005 static int
ICTFBI 0:4edb816d21e1 1006 null_login(int unit)
ICTFBI 0:4edb816d21e1 1007 {
ICTFBI 0:4edb816d21e1 1008 LWIP_UNUSED_ARG(unit);
ICTFBI 0:4edb816d21e1 1009 /* XXX Fail until we decide that we want to support logins. */
ICTFBI 0:4edb816d21e1 1010 return 0;
ICTFBI 0:4edb816d21e1 1011 }
ICTFBI 0:4edb816d21e1 1012
ICTFBI 0:4edb816d21e1 1013
ICTFBI 0:4edb816d21e1 1014 /*
ICTFBI 0:4edb816d21e1 1015 * get_pap_passwd - get a password for authenticating ourselves with
ICTFBI 0:4edb816d21e1 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
ICTFBI 0:4edb816d21e1 1017 * could be found.
ICTFBI 0:4edb816d21e1 1018 */
ICTFBI 0:4edb816d21e1 1019 static int
ICTFBI 0:4edb816d21e1 1020 get_pap_passwd(int unit, char *user, char *passwd)
ICTFBI 0:4edb816d21e1 1021 {
ICTFBI 0:4edb816d21e1 1022 LWIP_UNUSED_ARG(unit);
ICTFBI 0:4edb816d21e1 1023 /* normally we would reject PAP if no password is provided,
ICTFBI 0:4edb816d21e1 1024 but this causes problems with some providers (like CHT in Taiwan)
ICTFBI 0:4edb816d21e1 1025 who incorrectly request PAP and expect a bogus/empty password, so
ICTFBI 0:4edb816d21e1 1026 always provide a default user/passwd of "none"/"none"
ICTFBI 0:4edb816d21e1 1027
ICTFBI 0:4edb816d21e1 1028 @todo: This should be configured by the user, instead of being hardcoded here!
ICTFBI 0:4edb816d21e1 1029 */
ICTFBI 0:4edb816d21e1 1030 if(user) {
ICTFBI 0:4edb816d21e1 1031 strcpy(user, "none");
ICTFBI 0:4edb816d21e1 1032 }
ICTFBI 0:4edb816d21e1 1033 if(passwd) {
ICTFBI 0:4edb816d21e1 1034 strcpy(passwd, "none");
ICTFBI 0:4edb816d21e1 1035 }
ICTFBI 0:4edb816d21e1 1036 return 1;
ICTFBI 0:4edb816d21e1 1037 }
ICTFBI 0:4edb816d21e1 1038
ICTFBI 0:4edb816d21e1 1039 /*
ICTFBI 0:4edb816d21e1 1040 * have_pap_secret - check whether we have a PAP file with any
ICTFBI 0:4edb816d21e1 1041 * secrets that we could possibly use for authenticating the peer.
ICTFBI 0:4edb816d21e1 1042 */
ICTFBI 0:4edb816d21e1 1043 static int
ICTFBI 0:4edb816d21e1 1044 have_pap_secret(void)
ICTFBI 0:4edb816d21e1 1045 {
ICTFBI 0:4edb816d21e1 1046 /* XXX Fail until we set up our passwords. */
ICTFBI 0:4edb816d21e1 1047 return 0;
ICTFBI 0:4edb816d21e1 1048 }
ICTFBI 0:4edb816d21e1 1049
ICTFBI 0:4edb816d21e1 1050 /*
ICTFBI 0:4edb816d21e1 1051 * have_chap_secret - check whether we have a CHAP file with a
ICTFBI 0:4edb816d21e1 1052 * secret that we could possibly use for authenticating `client'
ICTFBI 0:4edb816d21e1 1053 * on `server'. Either can be the null string, meaning we don't
ICTFBI 0:4edb816d21e1 1054 * know the identity yet.
ICTFBI 0:4edb816d21e1 1055 */
ICTFBI 0:4edb816d21e1 1056 static int
ICTFBI 0:4edb816d21e1 1057 have_chap_secret(char *client, char *server, u32_t remote)
ICTFBI 0:4edb816d21e1 1058 {
ICTFBI 0:4edb816d21e1 1059 LWIP_UNUSED_ARG(client);
ICTFBI 0:4edb816d21e1 1060 LWIP_UNUSED_ARG(server);
ICTFBI 0:4edb816d21e1 1061 LWIP_UNUSED_ARG(remote);
ICTFBI 0:4edb816d21e1 1062
ICTFBI 0:4edb816d21e1 1063 /* XXX Fail until we set up our passwords. */
ICTFBI 0:4edb816d21e1 1064 return 0;
ICTFBI 0:4edb816d21e1 1065 }
ICTFBI 0:4edb816d21e1 1066 #if CHAP_SUPPORT
ICTFBI 0:4edb816d21e1 1067
ICTFBI 0:4edb816d21e1 1068 /*
ICTFBI 0:4edb816d21e1 1069 * get_secret - open the CHAP secret file and return the secret
ICTFBI 0:4edb816d21e1 1070 * for authenticating the given client on the given server.
ICTFBI 0:4edb816d21e1 1071 * (We could be either client or server).
ICTFBI 0:4edb816d21e1 1072 */
ICTFBI 0:4edb816d21e1 1073 int
ICTFBI 0:4edb816d21e1 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
ICTFBI 0:4edb816d21e1 1075 {
ICTFBI 0:4edb816d21e1 1076 #if 1
ICTFBI 0:4edb816d21e1 1077 int len;
ICTFBI 0:4edb816d21e1 1078 struct wordlist *addrs;
ICTFBI 0:4edb816d21e1 1079
ICTFBI 0:4edb816d21e1 1080 LWIP_UNUSED_ARG(unit);
ICTFBI 0:4edb816d21e1 1081 LWIP_UNUSED_ARG(server);
ICTFBI 0:4edb816d21e1 1082 LWIP_UNUSED_ARG(save_addrs);
ICTFBI 0:4edb816d21e1 1083
ICTFBI 0:4edb816d21e1 1084 addrs = NULL;
ICTFBI 0:4edb816d21e1 1085
ICTFBI 0:4edb816d21e1 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
ICTFBI 0:4edb816d21e1 1087 return 0;
ICTFBI 0:4edb816d21e1 1088 }
ICTFBI 0:4edb816d21e1 1089
ICTFBI 0:4edb816d21e1 1090 len = (int)strlen(ppp_settings.passwd);
ICTFBI 0:4edb816d21e1 1091 if (len > MAXSECRETLEN) {
ICTFBI 0:4edb816d21e1 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
ICTFBI 0:4edb816d21e1 1093 len = MAXSECRETLEN;
ICTFBI 0:4edb816d21e1 1094 }
ICTFBI 0:4edb816d21e1 1095
ICTFBI 0:4edb816d21e1 1096 BCOPY(ppp_settings.passwd, secret, len);
ICTFBI 0:4edb816d21e1 1097 *secret_len = len;
ICTFBI 0:4edb816d21e1 1098
ICTFBI 0:4edb816d21e1 1099 return 1;
ICTFBI 0:4edb816d21e1 1100 #else
ICTFBI 0:4edb816d21e1 1101 int ret = 0, len;
ICTFBI 0:4edb816d21e1 1102 struct wordlist *addrs;
ICTFBI 0:4edb816d21e1 1103 char secbuf[MAXWORDLEN];
ICTFBI 0:4edb816d21e1 1104
ICTFBI 0:4edb816d21e1 1105 addrs = NULL;
ICTFBI 0:4edb816d21e1 1106 secbuf[0] = 0;
ICTFBI 0:4edb816d21e1 1107
ICTFBI 0:4edb816d21e1 1108 /* XXX Find secret. */
ICTFBI 0:4edb816d21e1 1109 if (ret < 0) {
ICTFBI 0:4edb816d21e1 1110 return 0;
ICTFBI 0:4edb816d21e1 1111 }
ICTFBI 0:4edb816d21e1 1112
ICTFBI 0:4edb816d21e1 1113 if (save_addrs) {
ICTFBI 0:4edb816d21e1 1114 set_allowed_addrs(unit, addrs);
ICTFBI 0:4edb816d21e1 1115 }
ICTFBI 0:4edb816d21e1 1116
ICTFBI 0:4edb816d21e1 1117 len = strlen(secbuf);
ICTFBI 0:4edb816d21e1 1118 if (len > MAXSECRETLEN) {
ICTFBI 0:4edb816d21e1 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
ICTFBI 0:4edb816d21e1 1120 len = MAXSECRETLEN;
ICTFBI 0:4edb816d21e1 1121 }
ICTFBI 0:4edb816d21e1 1122
ICTFBI 0:4edb816d21e1 1123 BCOPY(secbuf, secret, len);
ICTFBI 0:4edb816d21e1 1124 BZERO(secbuf, sizeof(secbuf));
ICTFBI 0:4edb816d21e1 1125 *secret_len = len;
ICTFBI 0:4edb816d21e1 1126
ICTFBI 0:4edb816d21e1 1127 return 1;
ICTFBI 0:4edb816d21e1 1128 #endif
ICTFBI 0:4edb816d21e1 1129 }
ICTFBI 0:4edb816d21e1 1130 #endif /* CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 1131
ICTFBI 0:4edb816d21e1 1132
ICTFBI 0:4edb816d21e1 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 1134 /*
ICTFBI 0:4edb816d21e1 1135 * set_allowed_addrs() - set the list of allowed addresses.
ICTFBI 0:4edb816d21e1 1136 */
ICTFBI 0:4edb816d21e1 1137 static void
ICTFBI 0:4edb816d21e1 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
ICTFBI 0:4edb816d21e1 1139 {
ICTFBI 0:4edb816d21e1 1140 if (addresses[unit] != NULL) {
ICTFBI 0:4edb816d21e1 1141 free_wordlist(addresses[unit]);
ICTFBI 0:4edb816d21e1 1142 }
ICTFBI 0:4edb816d21e1 1143 addresses[unit] = addrs;
ICTFBI 0:4edb816d21e1 1144
ICTFBI 0:4edb816d21e1 1145 #if 0
ICTFBI 0:4edb816d21e1 1146 /*
ICTFBI 0:4edb816d21e1 1147 * If there's only one authorized address we might as well
ICTFBI 0:4edb816d21e1 1148 * ask our peer for that one right away
ICTFBI 0:4edb816d21e1 1149 */
ICTFBI 0:4edb816d21e1 1150 if (addrs != NULL && addrs->next == NULL) {
ICTFBI 0:4edb816d21e1 1151 char *p = addrs->word;
ICTFBI 0:4edb816d21e1 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
ICTFBI 0:4edb816d21e1 1153 u32_t a;
ICTFBI 0:4edb816d21e1 1154 struct hostent *hp;
ICTFBI 0:4edb816d21e1 1155
ICTFBI 0:4edb816d21e1 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
ICTFBI 0:4edb816d21e1 1157 hp = gethostbyname(p);
ICTFBI 0:4edb816d21e1 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
ICTFBI 0:4edb816d21e1 1159 a = *(u32_t *)hp->h_addr;
ICTFBI 0:4edb816d21e1 1160 } else {
ICTFBI 0:4edb816d21e1 1161 a = inet_addr(p);
ICTFBI 0:4edb816d21e1 1162 }
ICTFBI 0:4edb816d21e1 1163 if (a != (u32_t) -1) {
ICTFBI 0:4edb816d21e1 1164 wo->hisaddr = a;
ICTFBI 0:4edb816d21e1 1165 }
ICTFBI 0:4edb816d21e1 1166 }
ICTFBI 0:4edb816d21e1 1167 }
ICTFBI 0:4edb816d21e1 1168 #endif
ICTFBI 0:4edb816d21e1 1169 }
ICTFBI 0:4edb816d21e1 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 1171
ICTFBI 0:4edb816d21e1 1172 /*
ICTFBI 0:4edb816d21e1 1173 * auth_ip_addr - check whether the peer is authorized to use
ICTFBI 0:4edb816d21e1 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
ICTFBI 0:4edb816d21e1 1175 */
ICTFBI 0:4edb816d21e1 1176 int
ICTFBI 0:4edb816d21e1 1177 auth_ip_addr(int unit, u32_t addr)
ICTFBI 0:4edb816d21e1 1178 {
ICTFBI 0:4edb816d21e1 1179 return ip_addr_check(addr, addresses[unit]);
ICTFBI 0:4edb816d21e1 1180 }
ICTFBI 0:4edb816d21e1 1181
ICTFBI 0:4edb816d21e1 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
ICTFBI 0:4edb816d21e1 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
ICTFBI 0:4edb816d21e1 1184 {
ICTFBI 0:4edb816d21e1 1185 /* don't allow loopback or multicast address */
ICTFBI 0:4edb816d21e1 1186 if (bad_ip_adrs(addr)) {
ICTFBI 0:4edb816d21e1 1187 return 0;
ICTFBI 0:4edb816d21e1 1188 }
ICTFBI 0:4edb816d21e1 1189
ICTFBI 0:4edb816d21e1 1190 if (addrs == NULL) {
ICTFBI 0:4edb816d21e1 1191 return !ppp_settings.auth_required; /* no addresses authorized */
ICTFBI 0:4edb816d21e1 1192 }
ICTFBI 0:4edb816d21e1 1193
ICTFBI 0:4edb816d21e1 1194 /* XXX All other addresses allowed. */
ICTFBI 0:4edb816d21e1 1195 return 1;
ICTFBI 0:4edb816d21e1 1196 }
ICTFBI 0:4edb816d21e1 1197
ICTFBI 0:4edb816d21e1 1198 /*
ICTFBI 0:4edb816d21e1 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
ICTFBI 0:4edb816d21e1 1200 * to use, such as an address in the loopback net or a multicast address.
ICTFBI 0:4edb816d21e1 1201 * addr is in network byte order.
ICTFBI 0:4edb816d21e1 1202 */
ICTFBI 0:4edb816d21e1 1203 int
ICTFBI 0:4edb816d21e1 1204 bad_ip_adrs(u32_t addr)
ICTFBI 0:4edb816d21e1 1205 {
ICTFBI 0:4edb816d21e1 1206 addr = ntohl(addr);
ICTFBI 0:4edb816d21e1 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
ICTFBI 0:4edb816d21e1 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
ICTFBI 0:4edb816d21e1 1209 }
ICTFBI 0:4edb816d21e1 1210
ICTFBI 0:4edb816d21e1 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 1212 /*
ICTFBI 0:4edb816d21e1 1213 * some_ip_ok - check a wordlist to see if it authorizes any
ICTFBI 0:4edb816d21e1 1214 * IP address(es).
ICTFBI 0:4edb816d21e1 1215 */
ICTFBI 0:4edb816d21e1 1216 static int
ICTFBI 0:4edb816d21e1 1217 some_ip_ok(struct wordlist *addrs)
ICTFBI 0:4edb816d21e1 1218 {
ICTFBI 0:4edb816d21e1 1219 for (; addrs != 0; addrs = addrs->next) {
ICTFBI 0:4edb816d21e1 1220 if (addrs->word[0] == '-')
ICTFBI 0:4edb816d21e1 1221 break;
ICTFBI 0:4edb816d21e1 1222 if (addrs->word[0] != '!')
ICTFBI 0:4edb816d21e1 1223 return 1; /* some IP address is allowed */
ICTFBI 0:4edb816d21e1 1224 }
ICTFBI 0:4edb816d21e1 1225 return 0;
ICTFBI 0:4edb816d21e1 1226 }
ICTFBI 0:4edb816d21e1 1227
ICTFBI 0:4edb816d21e1 1228 /*
ICTFBI 0:4edb816d21e1 1229 * check_access - complain if a secret file has too-liberal permissions.
ICTFBI 0:4edb816d21e1 1230 */
ICTFBI 0:4edb816d21e1 1231 static void
ICTFBI 0:4edb816d21e1 1232 check_access(FILE *f, char *filename)
ICTFBI 0:4edb816d21e1 1233 {
ICTFBI 0:4edb816d21e1 1234 struct stat sbuf;
ICTFBI 0:4edb816d21e1 1235
ICTFBI 0:4edb816d21e1 1236 if (fstat(fileno(f), &sbuf) < 0) {
ICTFBI 0:4edb816d21e1 1237 warn("cannot stat secret file %s: %m", filename);
ICTFBI 0:4edb816d21e1 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
ICTFBI 0:4edb816d21e1 1239 warn("Warning - secret file %s has world and/or group access",
ICTFBI 0:4edb816d21e1 1240 filename);
ICTFBI 0:4edb816d21e1 1241 }
ICTFBI 0:4edb816d21e1 1242 }
ICTFBI 0:4edb816d21e1 1243
ICTFBI 0:4edb816d21e1 1244
ICTFBI 0:4edb816d21e1 1245 /*
ICTFBI 0:4edb816d21e1 1246 * scan_authfile - Scan an authorization file for a secret suitable
ICTFBI 0:4edb816d21e1 1247 * for authenticating `client' on `server'. The return value is -1
ICTFBI 0:4edb816d21e1 1248 * if no secret is found, otherwise >= 0. The return value has
ICTFBI 0:4edb816d21e1 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
ICTFBI 0:4edb816d21e1 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
ICTFBI 0:4edb816d21e1 1251 * Any following words on the line up to a "--" (i.e. address authorization
ICTFBI 0:4edb816d21e1 1252 * info) are placed in a wordlist and returned in *addrs. Any
ICTFBI 0:4edb816d21e1 1253 * following words (extra options) are placed in a wordlist and
ICTFBI 0:4edb816d21e1 1254 * returned in *opts.
ICTFBI 0:4edb816d21e1 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
ICTFBI 0:4edb816d21e1 1256 */
ICTFBI 0:4edb816d21e1 1257 static int
ICTFBI 0:4edb816d21e1 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
ICTFBI 0:4edb816d21e1 1259 {
ICTFBI 0:4edb816d21e1 1260 /* We do not (currently) need this in lwip */
ICTFBI 0:4edb816d21e1 1261 return 0; /* dummy */
ICTFBI 0:4edb816d21e1 1262 }
ICTFBI 0:4edb816d21e1 1263 /*
ICTFBI 0:4edb816d21e1 1264 * free_wordlist - release memory allocated for a wordlist.
ICTFBI 0:4edb816d21e1 1265 */
ICTFBI 0:4edb816d21e1 1266 static void
ICTFBI 0:4edb816d21e1 1267 free_wordlist(struct wordlist *wp)
ICTFBI 0:4edb816d21e1 1268 {
ICTFBI 0:4edb816d21e1 1269 struct wordlist *next;
ICTFBI 0:4edb816d21e1 1270
ICTFBI 0:4edb816d21e1 1271 while (wp != NULL) {
ICTFBI 0:4edb816d21e1 1272 next = wp->next;
ICTFBI 0:4edb816d21e1 1273 free(wp);
ICTFBI 0:4edb816d21e1 1274 wp = next;
ICTFBI 0:4edb816d21e1 1275 }
ICTFBI 0:4edb816d21e1 1276 }
ICTFBI 0:4edb816d21e1 1277
ICTFBI 0:4edb816d21e1 1278 /*
ICTFBI 0:4edb816d21e1 1279 * auth_script_done - called when the auth-up or auth-down script
ICTFBI 0:4edb816d21e1 1280 * has finished.
ICTFBI 0:4edb816d21e1 1281 */
ICTFBI 0:4edb816d21e1 1282 static void
ICTFBI 0:4edb816d21e1 1283 auth_script_done(void *arg)
ICTFBI 0:4edb816d21e1 1284 {
ICTFBI 0:4edb816d21e1 1285 auth_script_pid = 0;
ICTFBI 0:4edb816d21e1 1286 switch (auth_script_state) {
ICTFBI 0:4edb816d21e1 1287 case s_up:
ICTFBI 0:4edb816d21e1 1288 if (auth_state == s_down) {
ICTFBI 0:4edb816d21e1 1289 auth_script_state = s_down;
ICTFBI 0:4edb816d21e1 1290 auth_script(_PATH_AUTHDOWN);
ICTFBI 0:4edb816d21e1 1291 }
ICTFBI 0:4edb816d21e1 1292 break;
ICTFBI 0:4edb816d21e1 1293 case s_down:
ICTFBI 0:4edb816d21e1 1294 if (auth_state == s_up) {
ICTFBI 0:4edb816d21e1 1295 auth_script_state = s_up;
ICTFBI 0:4edb816d21e1 1296 auth_script(_PATH_AUTHUP);
ICTFBI 0:4edb816d21e1 1297 }
ICTFBI 0:4edb816d21e1 1298 break;
ICTFBI 0:4edb816d21e1 1299 }
ICTFBI 0:4edb816d21e1 1300 }
ICTFBI 0:4edb816d21e1 1301
ICTFBI 0:4edb816d21e1 1302 /*
ICTFBI 0:4edb816d21e1 1303 * auth_script - execute a script with arguments
ICTFBI 0:4edb816d21e1 1304 * interface-name peer-name real-user tty speed
ICTFBI 0:4edb816d21e1 1305 */
ICTFBI 0:4edb816d21e1 1306 static void
ICTFBI 0:4edb816d21e1 1307 auth_script(char *script)
ICTFBI 0:4edb816d21e1 1308 {
ICTFBI 0:4edb816d21e1 1309 char strspeed[32];
ICTFBI 0:4edb816d21e1 1310 struct passwd *pw;
ICTFBI 0:4edb816d21e1 1311 char struid[32];
ICTFBI 0:4edb816d21e1 1312 char *user_name;
ICTFBI 0:4edb816d21e1 1313 char *argv[8];
ICTFBI 0:4edb816d21e1 1314
ICTFBI 0:4edb816d21e1 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
ICTFBI 0:4edb816d21e1 1316 user_name = pw->pw_name;
ICTFBI 0:4edb816d21e1 1317 else {
ICTFBI 0:4edb816d21e1 1318 slprintf(struid, sizeof(struid), "%d", getuid());
ICTFBI 0:4edb816d21e1 1319 user_name = struid;
ICTFBI 0:4edb816d21e1 1320 }
ICTFBI 0:4edb816d21e1 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
ICTFBI 0:4edb816d21e1 1322
ICTFBI 0:4edb816d21e1 1323 argv[0] = script;
ICTFBI 0:4edb816d21e1 1324 argv[1] = ifname;
ICTFBI 0:4edb816d21e1 1325 argv[2] = peer_authname;
ICTFBI 0:4edb816d21e1 1326 argv[3] = user_name;
ICTFBI 0:4edb816d21e1 1327 argv[4] = devnam;
ICTFBI 0:4edb816d21e1 1328 argv[5] = strspeed;
ICTFBI 0:4edb816d21e1 1329 argv[6] = NULL;
ICTFBI 0:4edb816d21e1 1330
ICTFBI 0:4edb816d21e1 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
ICTFBI 0:4edb816d21e1 1332 }
ICTFBI 0:4edb816d21e1 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 1334 #endif /* PPP_SUPPORT */