Hendrik Vincent / Mbed 2 deprecated Weerstation

Leest de waarde van een sensor binnen een maakt deze beschikbaar via internet

Dependencies:   NTPClient_NetServices mbed

NetServices/lwip/netif/ppp/auth.c@0:05ccbd4f84f1, 2013-12-02 (annotated)

Committer:
hendrikvincent
Date:
Mon Dec 02 09:01:23 2013 +0000
Revision:
0:05ccbd4f84f1
eerste programma;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hendrikvincent 0:05ccbd4f84f1 1 /*****************************************************************************
hendrikvincent 0:05ccbd4f84f1 2 * auth.c - Network Authentication and Phase Control program file.
hendrikvincent 0:05ccbd4f84f1 3 *
hendrikvincent 0:05ccbd4f84f1 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
hendrikvincent 0:05ccbd4f84f1 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
hendrikvincent 0:05ccbd4f84f1 6 *
hendrikvincent 0:05ccbd4f84f1 7 * The authors hereby grant permission to use, copy, modify, distribute,
hendrikvincent 0:05ccbd4f84f1 8 * and license this software and its documentation for any purpose, provided
hendrikvincent 0:05ccbd4f84f1 9 * that existing copyright notices are retained in all copies and that this
hendrikvincent 0:05ccbd4f84f1 10 * notice and the following disclaimer are included verbatim in any
hendrikvincent 0:05ccbd4f84f1 11 * distributions. No written agreement, license, or royalty fee is required
hendrikvincent 0:05ccbd4f84f1 12 * for any of the authorized uses.
hendrikvincent 0:05ccbd4f84f1 13 *
hendrikvincent 0:05ccbd4f84f1 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
hendrikvincent 0:05ccbd4f84f1 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
hendrikvincent 0:05ccbd4f84f1 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
hendrikvincent 0:05ccbd4f84f1 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
hendrikvincent 0:05ccbd4f84f1 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
hendrikvincent 0:05ccbd4f84f1 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
hendrikvincent 0:05ccbd4f84f1 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
hendrikvincent 0:05ccbd4f84f1 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
hendrikvincent 0:05ccbd4f84f1 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
hendrikvincent 0:05ccbd4f84f1 24 *
hendrikvincent 0:05ccbd4f84f1 25 ******************************************************************************
hendrikvincent 0:05ccbd4f84f1 26 * REVISION HISTORY
hendrikvincent 0:05ccbd4f84f1 27 *
hendrikvincent 0:05ccbd4f84f1 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
hendrikvincent 0:05ccbd4f84f1 29 * Ported to lwIP.
hendrikvincent 0:05ccbd4f84f1 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
hendrikvincent 0:05ccbd4f84f1 31 * Ported from public pppd code.
hendrikvincent 0:05ccbd4f84f1 32 *****************************************************************************/
hendrikvincent 0:05ccbd4f84f1 33 /*
hendrikvincent 0:05ccbd4f84f1 34 * auth.c - PPP authentication and phase control.
hendrikvincent 0:05ccbd4f84f1 35 *
hendrikvincent 0:05ccbd4f84f1 36 * Copyright (c) 1993 The Australian National University.
hendrikvincent 0:05ccbd4f84f1 37 * All rights reserved.
hendrikvincent 0:05ccbd4f84f1 38 *
hendrikvincent 0:05ccbd4f84f1 39 * Redistribution and use in source and binary forms are permitted
hendrikvincent 0:05ccbd4f84f1 40 * provided that the above copyright notice and this paragraph are
hendrikvincent 0:05ccbd4f84f1 41 * duplicated in all such forms and that any documentation,
hendrikvincent 0:05ccbd4f84f1 42 * advertising materials, and other materials related to such
hendrikvincent 0:05ccbd4f84f1 43 * distribution and use acknowledge that the software was developed
hendrikvincent 0:05ccbd4f84f1 44 * by the Australian National University. The name of the University
hendrikvincent 0:05ccbd4f84f1 45 * may not be used to endorse or promote products derived from this
hendrikvincent 0:05ccbd4f84f1 46 * software without specific prior written permission.
hendrikvincent 0:05ccbd4f84f1 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
hendrikvincent 0:05ccbd4f84f1 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
hendrikvincent 0:05ccbd4f84f1 50 *
hendrikvincent 0:05ccbd4f84f1 51 * Copyright (c) 1989 Carnegie Mellon University.
hendrikvincent 0:05ccbd4f84f1 52 * All rights reserved.
hendrikvincent 0:05ccbd4f84f1 53 *
hendrikvincent 0:05ccbd4f84f1 54 * Redistribution and use in source and binary forms are permitted
hendrikvincent 0:05ccbd4f84f1 55 * provided that the above copyright notice and this paragraph are
hendrikvincent 0:05ccbd4f84f1 56 * duplicated in all such forms and that any documentation,
hendrikvincent 0:05ccbd4f84f1 57 * advertising materials, and other materials related to such
hendrikvincent 0:05ccbd4f84f1 58 * distribution and use acknowledge that the software was developed
hendrikvincent 0:05ccbd4f84f1 59 * by Carnegie Mellon University. The name of the
hendrikvincent 0:05ccbd4f84f1 60 * University may not be used to endorse or promote products derived
hendrikvincent 0:05ccbd4f84f1 61 * from this software without specific prior written permission.
hendrikvincent 0:05ccbd4f84f1 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
hendrikvincent 0:05ccbd4f84f1 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
hendrikvincent 0:05ccbd4f84f1 65 */
hendrikvincent 0:05ccbd4f84f1 66
hendrikvincent 0:05ccbd4f84f1 67 #include "lwip/opt.h"
hendrikvincent 0:05ccbd4f84f1 68
hendrikvincent 0:05ccbd4f84f1 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
hendrikvincent 0:05ccbd4f84f1 70
hendrikvincent 0:05ccbd4f84f1 71 #include "ppp.h"
hendrikvincent 0:05ccbd4f84f1 72 #include "pppdebug.h"
hendrikvincent 0:05ccbd4f84f1 73
hendrikvincent 0:05ccbd4f84f1 74 #include "fsm.h"
hendrikvincent 0:05ccbd4f84f1 75 #include "lcp.h"
hendrikvincent 0:05ccbd4f84f1 76 #include "pap.h"
hendrikvincent 0:05ccbd4f84f1 77 #include "chap.h"
hendrikvincent 0:05ccbd4f84f1 78 #include "auth.h"
hendrikvincent 0:05ccbd4f84f1 79 #include "ipcp.h"
hendrikvincent 0:05ccbd4f84f1 80
hendrikvincent 0:05ccbd4f84f1 81 #if CBCP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 82 #include "cbcp.h"
hendrikvincent 0:05ccbd4f84f1 83 #endif /* CBCP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 84
hendrikvincent 0:05ccbd4f84f1 85 #include "lwip/inet.h"
hendrikvincent 0:05ccbd4f84f1 86
hendrikvincent 0:05ccbd4f84f1 87 #include <string.h>
hendrikvincent 0:05ccbd4f84f1 88
hendrikvincent 0:05ccbd4f84f1 89 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 90 /* Bits in scan_authfile return value */
hendrikvincent 0:05ccbd4f84f1 91 #define NONWILD_SERVER 1
hendrikvincent 0:05ccbd4f84f1 92 #define NONWILD_CLIENT 2
hendrikvincent 0:05ccbd4f84f1 93
hendrikvincent 0:05ccbd4f84f1 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
hendrikvincent 0:05ccbd4f84f1 95 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 96
hendrikvincent 0:05ccbd4f84f1 97 #if PAP_SUPPORT || CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 98 /* The name by which the peer authenticated itself to us. */
hendrikvincent 0:05ccbd4f84f1 99 static char peer_authname[MAXNAMELEN];
hendrikvincent 0:05ccbd4f84f1 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 101
hendrikvincent 0:05ccbd4f84f1 102 /* Records which authentication operations haven't completed yet. */
hendrikvincent 0:05ccbd4f84f1 103 static int auth_pending[NUM_PPP];
hendrikvincent 0:05ccbd4f84f1 104
hendrikvincent 0:05ccbd4f84f1 105 /* Set if we have successfully called plogin() */
hendrikvincent 0:05ccbd4f84f1 106 static int logged_in;
hendrikvincent 0:05ccbd4f84f1 107
hendrikvincent 0:05ccbd4f84f1 108 /* Set if we have run the /etc/ppp/auth-up script. */
hendrikvincent 0:05ccbd4f84f1 109 static int did_authup; /* @todo, we don't need this in lwip*/
hendrikvincent 0:05ccbd4f84f1 110
hendrikvincent 0:05ccbd4f84f1 111 /* List of addresses which the peer may use. */
hendrikvincent 0:05ccbd4f84f1 112 static struct wordlist *addresses[NUM_PPP];
hendrikvincent 0:05ccbd4f84f1 113
hendrikvincent 0:05ccbd4f84f1 114 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 115 /* Wordlist giving addresses which the peer may use
hendrikvincent 0:05ccbd4f84f1 116 without authenticating itself. */
hendrikvincent 0:05ccbd4f84f1 117 static struct wordlist *noauth_addrs;
hendrikvincent 0:05ccbd4f84f1 118
hendrikvincent 0:05ccbd4f84f1 119 /* Extra options to apply, from the secrets file entry for the peer. */
hendrikvincent 0:05ccbd4f84f1 120 static struct wordlist *extra_options;
hendrikvincent 0:05ccbd4f84f1 121 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 122
hendrikvincent 0:05ccbd4f84f1 123 /* Number of network protocols which we have opened. */
hendrikvincent 0:05ccbd4f84f1 124 static int num_np_open;
hendrikvincent 0:05ccbd4f84f1 125
hendrikvincent 0:05ccbd4f84f1 126 /* Number of network protocols which have come up. */
hendrikvincent 0:05ccbd4f84f1 127 static int num_np_up;
hendrikvincent 0:05ccbd4f84f1 128
hendrikvincent 0:05ccbd4f84f1 129 #if PAP_SUPPORT || CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
hendrikvincent 0:05ccbd4f84f1 131 static int passwd_from_file;
hendrikvincent 0:05ccbd4f84f1 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 133
hendrikvincent 0:05ccbd4f84f1 134 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 135 /* Set if we require authentication only because we have a default route. */
hendrikvincent 0:05ccbd4f84f1 136 static bool default_auth;
hendrikvincent 0:05ccbd4f84f1 137
hendrikvincent 0:05ccbd4f84f1 138 /* Hook to enable a plugin to control the idle time limit */
hendrikvincent 0:05ccbd4f84f1 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
hendrikvincent 0:05ccbd4f84f1 140
hendrikvincent 0:05ccbd4f84f1 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
hendrikvincent 0:05ccbd4f84f1 142 int (*pap_check_hook) __P((void)) = NULL;
hendrikvincent 0:05ccbd4f84f1 143
hendrikvincent 0:05ccbd4f84f1 144 /* Hook for a plugin to check the PAP user and password */
hendrikvincent 0:05ccbd4f84f1 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
hendrikvincent 0:05ccbd4f84f1 146 struct wordlist **paddrs,
hendrikvincent 0:05ccbd4f84f1 147 struct wordlist **popts)) = NULL;
hendrikvincent 0:05ccbd4f84f1 148
hendrikvincent 0:05ccbd4f84f1 149 /* Hook for a plugin to know about the PAP user logout */
hendrikvincent 0:05ccbd4f84f1 150 void (*pap_logout_hook) __P((void)) = NULL;
hendrikvincent 0:05ccbd4f84f1 151
hendrikvincent 0:05ccbd4f84f1 152 /* Hook for a plugin to get the PAP password for authenticating us */
hendrikvincent 0:05ccbd4f84f1 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
hendrikvincent 0:05ccbd4f84f1 154
hendrikvincent 0:05ccbd4f84f1 155 /*
hendrikvincent 0:05ccbd4f84f1 156 * This is used to ensure that we don't start an auth-up/down
hendrikvincent 0:05ccbd4f84f1 157 * script while one is already running.
hendrikvincent 0:05ccbd4f84f1 158 */
hendrikvincent 0:05ccbd4f84f1 159 enum script_state {
hendrikvincent 0:05ccbd4f84f1 160 s_down,
hendrikvincent 0:05ccbd4f84f1 161 s_up
hendrikvincent 0:05ccbd4f84f1 162 };
hendrikvincent 0:05ccbd4f84f1 163
hendrikvincent 0:05ccbd4f84f1 164 static enum script_state auth_state = s_down;
hendrikvincent 0:05ccbd4f84f1 165 static enum script_state auth_script_state = s_down;
hendrikvincent 0:05ccbd4f84f1 166 static pid_t auth_script_pid = 0;
hendrikvincent 0:05ccbd4f84f1 167
hendrikvincent 0:05ccbd4f84f1 168 /*
hendrikvincent 0:05ccbd4f84f1 169 * Option variables.
hendrikvincent 0:05ccbd4f84f1 170 * lwip: some of these are present in the ppp_settings structure
hendrikvincent 0:05ccbd4f84f1 171 */
hendrikvincent 0:05ccbd4f84f1 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
hendrikvincent 0:05ccbd4f84f1 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
hendrikvincent 0:05ccbd4f84f1 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
hendrikvincent 0:05ccbd4f84f1 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
hendrikvincent 0:05ccbd4f84f1 176 bool usehostname = 0; /* Use hostname for our_name */
hendrikvincent 0:05ccbd4f84f1 177 bool auth_required = 0; /* Always require authentication from peer */
hendrikvincent 0:05ccbd4f84f1 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
hendrikvincent 0:05ccbd4f84f1 179 bool explicit_remote = 0; /* User specified explicit remote name */
hendrikvincent 0:05ccbd4f84f1 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
hendrikvincent 0:05ccbd4f84f1 181
hendrikvincent 0:05ccbd4f84f1 182 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 183
hendrikvincent 0:05ccbd4f84f1 184 /* Bits in auth_pending[] */
hendrikvincent 0:05ccbd4f84f1 185 #define PAP_WITHPEER 1
hendrikvincent 0:05ccbd4f84f1 186 #define PAP_PEER 2
hendrikvincent 0:05ccbd4f84f1 187 #define CHAP_WITHPEER 4
hendrikvincent 0:05ccbd4f84f1 188 #define CHAP_PEER 8
hendrikvincent 0:05ccbd4f84f1 189
hendrikvincent 0:05ccbd4f84f1 190 /* @todo, move this somewhere */
hendrikvincent 0:05ccbd4f84f1 191 /* Used for storing a sequence of words. Usually malloced. */
hendrikvincent 0:05ccbd4f84f1 192 struct wordlist {
hendrikvincent 0:05ccbd4f84f1 193 struct wordlist *next;
hendrikvincent 0:05ccbd4f84f1 194 char word[1];
hendrikvincent 0:05ccbd4f84f1 195 };
hendrikvincent 0:05ccbd4f84f1 196
hendrikvincent 0:05ccbd4f84f1 197
hendrikvincent 0:05ccbd4f84f1 198 extern char *crypt (const char *, const char *);
hendrikvincent 0:05ccbd4f84f1 199
hendrikvincent 0:05ccbd4f84f1 200 /* Prototypes for procedures local to this file. */
hendrikvincent 0:05ccbd4f84f1 201
hendrikvincent 0:05ccbd4f84f1 202 static void network_phase (int);
hendrikvincent 0:05ccbd4f84f1 203 static void check_idle (void *);
hendrikvincent 0:05ccbd4f84f1 204 static void connect_time_expired (void *);
hendrikvincent 0:05ccbd4f84f1 205 #if 0
hendrikvincent 0:05ccbd4f84f1 206 static int plogin (char *, char *, char **, int *);
hendrikvincent 0:05ccbd4f84f1 207 #endif
hendrikvincent 0:05ccbd4f84f1 208 static void plogout (void);
hendrikvincent 0:05ccbd4f84f1 209 static int null_login (int);
hendrikvincent 0:05ccbd4f84f1 210 static int get_pap_passwd (int, char *, char *);
hendrikvincent 0:05ccbd4f84f1 211 static int have_pap_secret (void);
hendrikvincent 0:05ccbd4f84f1 212 static int have_chap_secret (char *, char *, u32_t);
hendrikvincent 0:05ccbd4f84f1 213 static int ip_addr_check (u32_t, struct wordlist *);
hendrikvincent 0:05ccbd4f84f1 214
hendrikvincent 0:05ccbd4f84f1 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 216 static int scan_authfile (FILE *, char *, char *, char *,
hendrikvincent 0:05ccbd4f84f1 217 struct wordlist **, struct wordlist **,
hendrikvincent 0:05ccbd4f84f1 218 char *);
hendrikvincent 0:05ccbd4f84f1 219 static void free_wordlist (struct wordlist *);
hendrikvincent 0:05ccbd4f84f1 220 static void auth_script (char *);
hendrikvincent 0:05ccbd4f84f1 221 static void auth_script_done (void *);
hendrikvincent 0:05ccbd4f84f1 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
hendrikvincent 0:05ccbd4f84f1 223 static int some_ip_ok (struct wordlist *);
hendrikvincent 0:05ccbd4f84f1 224 static int setupapfile (char **);
hendrikvincent 0:05ccbd4f84f1 225 static int privgroup (char **);
hendrikvincent 0:05ccbd4f84f1 226 static int set_noauth_addr (char **);
hendrikvincent 0:05ccbd4f84f1 227 static void check_access (FILE *, char *);
hendrikvincent 0:05ccbd4f84f1 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 229
hendrikvincent 0:05ccbd4f84f1 230 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 231 /*
hendrikvincent 0:05ccbd4f84f1 232 * Authentication-related options.
hendrikvincent 0:05ccbd4f84f1 233 */
hendrikvincent 0:05ccbd4f84f1 234 option_t auth_options[] = {
hendrikvincent 0:05ccbd4f84f1 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
hendrikvincent 0:05ccbd4f84f1 236 "Require PAP authentication from peer", 1, &auth_required },
hendrikvincent 0:05ccbd4f84f1 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
hendrikvincent 0:05ccbd4f84f1 238 "Require PAP authentication from peer", 1, &auth_required },
hendrikvincent 0:05ccbd4f84f1 239 { "refuse-pap", o_bool, &refuse_pap,
hendrikvincent 0:05ccbd4f84f1 240 "Don't agree to auth to peer with PAP", 1 },
hendrikvincent 0:05ccbd4f84f1 241 { "-pap", o_bool, &refuse_pap,
hendrikvincent 0:05ccbd4f84f1 242 "Don't allow PAP authentication with peer", 1 },
hendrikvincent 0:05ccbd4f84f1 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
hendrikvincent 0:05ccbd4f84f1 244 "Require CHAP authentication from peer", 1, &auth_required },
hendrikvincent 0:05ccbd4f84f1 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
hendrikvincent 0:05ccbd4f84f1 246 "Require CHAP authentication from peer", 1, &auth_required },
hendrikvincent 0:05ccbd4f84f1 247 { "refuse-chap", o_bool, &refuse_chap,
hendrikvincent 0:05ccbd4f84f1 248 "Don't agree to auth to peer with CHAP", 1 },
hendrikvincent 0:05ccbd4f84f1 249 { "-chap", o_bool, &refuse_chap,
hendrikvincent 0:05ccbd4f84f1 250 "Don't allow CHAP authentication with peer", 1 },
hendrikvincent 0:05ccbd4f84f1 251 { "name", o_string, our_name,
hendrikvincent 0:05ccbd4f84f1 252 "Set local name for authentication",
hendrikvincent 0:05ccbd4f84f1 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
hendrikvincent 0:05ccbd4f84f1 254 { "user", o_string, user,
hendrikvincent 0:05ccbd4f84f1 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
hendrikvincent 0:05ccbd4f84f1 256 { "usehostname", o_bool, &usehostname,
hendrikvincent 0:05ccbd4f84f1 257 "Must use hostname for authentication", 1 },
hendrikvincent 0:05ccbd4f84f1 258 { "remotename", o_string, remote_name,
hendrikvincent 0:05ccbd4f84f1 259 "Set remote name for authentication", OPT_STATIC,
hendrikvincent 0:05ccbd4f84f1 260 &explicit_remote, MAXNAMELEN },
hendrikvincent 0:05ccbd4f84f1 261 { "auth", o_bool, &auth_required,
hendrikvincent 0:05ccbd4f84f1 262 "Require authentication from peer", 1 },
hendrikvincent 0:05ccbd4f84f1 263 { "noauth", o_bool, &auth_required,
hendrikvincent 0:05ccbd4f84f1 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
hendrikvincent 0:05ccbd4f84f1 265 { "login", o_bool, &uselogin,
hendrikvincent 0:05ccbd4f84f1 266 "Use system password database for PAP", 1 },
hendrikvincent 0:05ccbd4f84f1 267 { "papcrypt", o_bool, &cryptpap,
hendrikvincent 0:05ccbd4f84f1 268 "PAP passwords are encrypted", 1 },
hendrikvincent 0:05ccbd4f84f1 269 { "+ua", o_special, (void *)setupapfile,
hendrikvincent 0:05ccbd4f84f1 270 "Get PAP user and password from file" },
hendrikvincent 0:05ccbd4f84f1 271 { "password", o_string, passwd,
hendrikvincent 0:05ccbd4f84f1 272 "Password for authenticating us to the peer", OPT_STATIC,
hendrikvincent 0:05ccbd4f84f1 273 NULL, MAXSECRETLEN },
hendrikvincent 0:05ccbd4f84f1 274 { "privgroup", o_special, (void *)privgroup,
hendrikvincent 0:05ccbd4f84f1 275 "Allow group members to use privileged options", OPT_PRIV },
hendrikvincent 0:05ccbd4f84f1 276 { "allow-ip", o_special, (void *)set_noauth_addr,
hendrikvincent 0:05ccbd4f84f1 277 "Set IP address(es) which can be used without authentication",
hendrikvincent 0:05ccbd4f84f1 278 OPT_PRIV },
hendrikvincent 0:05ccbd4f84f1 279 { NULL }
hendrikvincent 0:05ccbd4f84f1 280 };
hendrikvincent 0:05ccbd4f84f1 281 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 282 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 283 /*
hendrikvincent 0:05ccbd4f84f1 284 * setupapfile - specifies UPAP info for authenticating with peer.
hendrikvincent 0:05ccbd4f84f1 285 */
hendrikvincent 0:05ccbd4f84f1 286 static int
hendrikvincent 0:05ccbd4f84f1 287 setupapfile(char **argv)
hendrikvincent 0:05ccbd4f84f1 288 {
hendrikvincent 0:05ccbd4f84f1 289 FILE * ufile;
hendrikvincent 0:05ccbd4f84f1 290 int l;
hendrikvincent 0:05ccbd4f84f1 291
hendrikvincent 0:05ccbd4f84f1 292 lcp_allowoptions[0].neg_upap = 1;
hendrikvincent 0:05ccbd4f84f1 293
hendrikvincent 0:05ccbd4f84f1 294 /* open user info file */
hendrikvincent 0:05ccbd4f84f1 295 seteuid(getuid());
hendrikvincent 0:05ccbd4f84f1 296 ufile = fopen(*argv, "r");
hendrikvincent 0:05ccbd4f84f1 297 seteuid(0);
hendrikvincent 0:05ccbd4f84f1 298 if (ufile == NULL) {
hendrikvincent 0:05ccbd4f84f1 299 option_error("unable to open user login data file %s", *argv);
hendrikvincent 0:05ccbd4f84f1 300 return 0;
hendrikvincent 0:05ccbd4f84f1 301 }
hendrikvincent 0:05ccbd4f84f1 302 check_access(ufile, *argv);
hendrikvincent 0:05ccbd4f84f1 303
hendrikvincent 0:05ccbd4f84f1 304 /* get username */
hendrikvincent 0:05ccbd4f84f1 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
hendrikvincent 0:05ccbd4f84f1 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
hendrikvincent 0:05ccbd4f84f1 307 option_error("unable to read user login data file %s", *argv);
hendrikvincent 0:05ccbd4f84f1 308 return 0;
hendrikvincent 0:05ccbd4f84f1 309 }
hendrikvincent 0:05ccbd4f84f1 310 fclose(ufile);
hendrikvincent 0:05ccbd4f84f1 311
hendrikvincent 0:05ccbd4f84f1 312 /* get rid of newlines */
hendrikvincent 0:05ccbd4f84f1 313 l = strlen(user);
hendrikvincent 0:05ccbd4f84f1 314 if (l > 0 && user[l-1] == '\n')
hendrikvincent 0:05ccbd4f84f1 315 user[l-1] = 0;
hendrikvincent 0:05ccbd4f84f1 316 l = strlen(passwd);
hendrikvincent 0:05ccbd4f84f1 317 if (l > 0 && passwd[l-1] == '\n')
hendrikvincent 0:05ccbd4f84f1 318 passwd[l-1] = 0;
hendrikvincent 0:05ccbd4f84f1 319
hendrikvincent 0:05ccbd4f84f1 320 return (1);
hendrikvincent 0:05ccbd4f84f1 321 }
hendrikvincent 0:05ccbd4f84f1 322 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 323
hendrikvincent 0:05ccbd4f84f1 324 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 325 /*
hendrikvincent 0:05ccbd4f84f1 326 * privgroup - allow members of the group to have privileged access.
hendrikvincent 0:05ccbd4f84f1 327 */
hendrikvincent 0:05ccbd4f84f1 328 static int
hendrikvincent 0:05ccbd4f84f1 329 privgroup(char **argv)
hendrikvincent 0:05ccbd4f84f1 330 {
hendrikvincent 0:05ccbd4f84f1 331 struct group *g;
hendrikvincent 0:05ccbd4f84f1 332 int i;
hendrikvincent 0:05ccbd4f84f1 333
hendrikvincent 0:05ccbd4f84f1 334 g = getgrnam(*argv);
hendrikvincent 0:05ccbd4f84f1 335 if (g == 0) {
hendrikvincent 0:05ccbd4f84f1 336 option_error("group %s is unknown", *argv);
hendrikvincent 0:05ccbd4f84f1 337 return 0;
hendrikvincent 0:05ccbd4f84f1 338 }
hendrikvincent 0:05ccbd4f84f1 339 for (i = 0; i < ngroups; ++i) {
hendrikvincent 0:05ccbd4f84f1 340 if (groups[i] == g->gr_gid) {
hendrikvincent 0:05ccbd4f84f1 341 privileged = 1;
hendrikvincent 0:05ccbd4f84f1 342 break;
hendrikvincent 0:05ccbd4f84f1 343 }
hendrikvincent 0:05ccbd4f84f1 344 }
hendrikvincent 0:05ccbd4f84f1 345 return 1;
hendrikvincent 0:05ccbd4f84f1 346 }
hendrikvincent 0:05ccbd4f84f1 347 #endif
hendrikvincent 0:05ccbd4f84f1 348
hendrikvincent 0:05ccbd4f84f1 349 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 350 /*
hendrikvincent 0:05ccbd4f84f1 351 * set_noauth_addr - set address(es) that can be used without authentication.
hendrikvincent 0:05ccbd4f84f1 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
hendrikvincent 0:05ccbd4f84f1 353 */
hendrikvincent 0:05ccbd4f84f1 354 static int
hendrikvincent 0:05ccbd4f84f1 355 set_noauth_addr(char **argv)
hendrikvincent 0:05ccbd4f84f1 356 {
hendrikvincent 0:05ccbd4f84f1 357 char *addr = *argv;
hendrikvincent 0:05ccbd4f84f1 358 int l = strlen(addr);
hendrikvincent 0:05ccbd4f84f1 359 struct wordlist *wp;
hendrikvincent 0:05ccbd4f84f1 360
hendrikvincent 0:05ccbd4f84f1 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
hendrikvincent 0:05ccbd4f84f1 362 if (wp == NULL)
hendrikvincent 0:05ccbd4f84f1 363 novm("allow-ip argument");
hendrikvincent 0:05ccbd4f84f1 364 wp->word = (char *) (wp + 1);
hendrikvincent 0:05ccbd4f84f1 365 wp->next = noauth_addrs;
hendrikvincent 0:05ccbd4f84f1 366 BCOPY(addr, wp->word, l);
hendrikvincent 0:05ccbd4f84f1 367 noauth_addrs = wp;
hendrikvincent 0:05ccbd4f84f1 368 return 1;
hendrikvincent 0:05ccbd4f84f1 369 }
hendrikvincent 0:05ccbd4f84f1 370 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 371
hendrikvincent 0:05ccbd4f84f1 372 /*
hendrikvincent 0:05ccbd4f84f1 373 * An Open on LCP has requested a change from Dead to Establish phase.
hendrikvincent 0:05ccbd4f84f1 374 * Do what's necessary to bring the physical layer up.
hendrikvincent 0:05ccbd4f84f1 375 */
hendrikvincent 0:05ccbd4f84f1 376 void
hendrikvincent 0:05ccbd4f84f1 377 link_required(int unit)
hendrikvincent 0:05ccbd4f84f1 378 {
hendrikvincent 0:05ccbd4f84f1 379 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 380
hendrikvincent 0:05ccbd4f84f1 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
hendrikvincent 0:05ccbd4f84f1 382 }
hendrikvincent 0:05ccbd4f84f1 383
hendrikvincent 0:05ccbd4f84f1 384 /*
hendrikvincent 0:05ccbd4f84f1 385 * LCP has terminated the link; go to the Dead phase and take the
hendrikvincent 0:05ccbd4f84f1 386 * physical layer down.
hendrikvincent 0:05ccbd4f84f1 387 */
hendrikvincent 0:05ccbd4f84f1 388 void
hendrikvincent 0:05ccbd4f84f1 389 link_terminated(int unit)
hendrikvincent 0:05ccbd4f84f1 390 {
hendrikvincent 0:05ccbd4f84f1 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
hendrikvincent 0:05ccbd4f84f1 392 if (lcp_phase[unit] == PHASE_DEAD) {
hendrikvincent 0:05ccbd4f84f1 393 return;
hendrikvincent 0:05ccbd4f84f1 394 }
hendrikvincent 0:05ccbd4f84f1 395 if (logged_in) {
hendrikvincent 0:05ccbd4f84f1 396 plogout();
hendrikvincent 0:05ccbd4f84f1 397 }
hendrikvincent 0:05ccbd4f84f1 398 lcp_phase[unit] = PHASE_DEAD;
hendrikvincent 0:05ccbd4f84f1 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
hendrikvincent 0:05ccbd4f84f1 400 pppLinkTerminated(unit);
hendrikvincent 0:05ccbd4f84f1 401 }
hendrikvincent 0:05ccbd4f84f1 402
hendrikvincent 0:05ccbd4f84f1 403 /*
hendrikvincent 0:05ccbd4f84f1 404 * LCP has gone down; it will either die or try to re-establish.
hendrikvincent 0:05ccbd4f84f1 405 */
hendrikvincent 0:05ccbd4f84f1 406 void
hendrikvincent 0:05ccbd4f84f1 407 link_down(int unit)
hendrikvincent 0:05ccbd4f84f1 408 {
hendrikvincent 0:05ccbd4f84f1 409 int i;
hendrikvincent 0:05ccbd4f84f1 410 struct protent *protp;
hendrikvincent 0:05ccbd4f84f1 411
hendrikvincent 0:05ccbd4f84f1 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
hendrikvincent 0:05ccbd4f84f1 413
hendrikvincent 0:05ccbd4f84f1 414 if (did_authup) {
hendrikvincent 0:05ccbd4f84f1 415 /* XXX Do link down processing. */
hendrikvincent 0:05ccbd4f84f1 416 did_authup = 0;
hendrikvincent 0:05ccbd4f84f1 417 }
hendrikvincent 0:05ccbd4f84f1 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hendrikvincent 0:05ccbd4f84f1 419 if (!protp->enabled_flag) {
hendrikvincent 0:05ccbd4f84f1 420 continue;
hendrikvincent 0:05ccbd4f84f1 421 }
hendrikvincent 0:05ccbd4f84f1 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
hendrikvincent 0:05ccbd4f84f1 423 (*protp->lowerdown)(unit);
hendrikvincent 0:05ccbd4f84f1 424 }
hendrikvincent 0:05ccbd4f84f1 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
hendrikvincent 0:05ccbd4f84f1 426 (*protp->close)(unit, "LCP down");
hendrikvincent 0:05ccbd4f84f1 427 }
hendrikvincent 0:05ccbd4f84f1 428 }
hendrikvincent 0:05ccbd4f84f1 429 num_np_open = 0; /* number of network protocols we have opened */
hendrikvincent 0:05ccbd4f84f1 430 num_np_up = 0; /* Number of network protocols which have come up */
hendrikvincent 0:05ccbd4f84f1 431
hendrikvincent 0:05ccbd4f84f1 432 if (lcp_phase[unit] != PHASE_DEAD) {
hendrikvincent 0:05ccbd4f84f1 433 lcp_phase[unit] = PHASE_TERMINATE;
hendrikvincent 0:05ccbd4f84f1 434 }
hendrikvincent 0:05ccbd4f84f1 435 pppLinkDown(unit);
hendrikvincent 0:05ccbd4f84f1 436 }
hendrikvincent 0:05ccbd4f84f1 437
hendrikvincent 0:05ccbd4f84f1 438 /*
hendrikvincent 0:05ccbd4f84f1 439 * The link is established.
hendrikvincent 0:05ccbd4f84f1 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
hendrikvincent 0:05ccbd4f84f1 441 */
hendrikvincent 0:05ccbd4f84f1 442 void
hendrikvincent 0:05ccbd4f84f1 443 link_established(int unit)
hendrikvincent 0:05ccbd4f84f1 444 {
hendrikvincent 0:05ccbd4f84f1 445 int auth;
hendrikvincent 0:05ccbd4f84f1 446 int i;
hendrikvincent 0:05ccbd4f84f1 447 struct protent *protp;
hendrikvincent 0:05ccbd4f84f1 448 lcp_options *wo = &lcp_wantoptions[unit];
hendrikvincent 0:05ccbd4f84f1 449 lcp_options *go = &lcp_gotoptions[unit];
hendrikvincent 0:05ccbd4f84f1 450 #if PAP_SUPPORT || CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 451 lcp_options *ho = &lcp_hisoptions[unit];
hendrikvincent 0:05ccbd4f84f1 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 453
hendrikvincent 0:05ccbd4f84f1 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
hendrikvincent 0:05ccbd4f84f1 455 /*
hendrikvincent 0:05ccbd4f84f1 456 * Tell higher-level protocols that LCP is up.
hendrikvincent 0:05ccbd4f84f1 457 */
hendrikvincent 0:05ccbd4f84f1 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hendrikvincent 0:05ccbd4f84f1 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
hendrikvincent 0:05ccbd4f84f1 460 (*protp->lowerup)(unit);
hendrikvincent 0:05ccbd4f84f1 461 }
hendrikvincent 0:05ccbd4f84f1 462 }
hendrikvincent 0:05ccbd4f84f1 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
hendrikvincent 0:05ccbd4f84f1 464 /*
hendrikvincent 0:05ccbd4f84f1 465 * We wanted the peer to authenticate itself, and it refused:
hendrikvincent 0:05ccbd4f84f1 466 * treat it as though it authenticated with PAP using a username
hendrikvincent 0:05ccbd4f84f1 467 * of "" and a password of "". If that's not OK, boot it out.
hendrikvincent 0:05ccbd4f84f1 468 */
hendrikvincent 0:05ccbd4f84f1 469 if (!wo->neg_upap || !null_login(unit)) {
hendrikvincent 0:05ccbd4f84f1 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
hendrikvincent 0:05ccbd4f84f1 471 lcp_close(unit, "peer refused to authenticate");
hendrikvincent 0:05ccbd4f84f1 472 return;
hendrikvincent 0:05ccbd4f84f1 473 }
hendrikvincent 0:05ccbd4f84f1 474 }
hendrikvincent 0:05ccbd4f84f1 475
hendrikvincent 0:05ccbd4f84f1 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
hendrikvincent 0:05ccbd4f84f1 477 auth = 0;
hendrikvincent 0:05ccbd4f84f1 478 #if CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 479 if (go->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
hendrikvincent 0:05ccbd4f84f1 481 auth |= CHAP_PEER;
hendrikvincent 0:05ccbd4f84f1 482 }
hendrikvincent 0:05ccbd4f84f1 483 #endif /* CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 484 #if PAP_SUPPORT && CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 485 else
hendrikvincent 0:05ccbd4f84f1 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 487 #if PAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 488 if (go->neg_upap) {
hendrikvincent 0:05ccbd4f84f1 489 upap_authpeer(unit);
hendrikvincent 0:05ccbd4f84f1 490 auth |= PAP_PEER;
hendrikvincent 0:05ccbd4f84f1 491 }
hendrikvincent 0:05ccbd4f84f1 492 #endif /* PAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 493 #if CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 494 if (ho->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
hendrikvincent 0:05ccbd4f84f1 496 auth |= CHAP_WITHPEER;
hendrikvincent 0:05ccbd4f84f1 497 }
hendrikvincent 0:05ccbd4f84f1 498 #endif /* CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 499 #if PAP_SUPPORT && CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 500 else
hendrikvincent 0:05ccbd4f84f1 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 502 #if PAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 503 if (ho->neg_upap) {
hendrikvincent 0:05ccbd4f84f1 504 if (ppp_settings.passwd[0] == 0) {
hendrikvincent 0:05ccbd4f84f1 505 passwd_from_file = 1;
hendrikvincent 0:05ccbd4f84f1 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
hendrikvincent 0:05ccbd4f84f1 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
hendrikvincent 0:05ccbd4f84f1 508 }
hendrikvincent 0:05ccbd4f84f1 509 }
hendrikvincent 0:05ccbd4f84f1 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
hendrikvincent 0:05ccbd4f84f1 511 auth |= PAP_WITHPEER;
hendrikvincent 0:05ccbd4f84f1 512 }
hendrikvincent 0:05ccbd4f84f1 513 #endif /* PAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 514 auth_pending[unit] = auth;
hendrikvincent 0:05ccbd4f84f1 515
hendrikvincent 0:05ccbd4f84f1 516 if (!auth) {
hendrikvincent 0:05ccbd4f84f1 517 network_phase(unit);
hendrikvincent 0:05ccbd4f84f1 518 }
hendrikvincent 0:05ccbd4f84f1 519 }
hendrikvincent 0:05ccbd4f84f1 520
hendrikvincent 0:05ccbd4f84f1 521 /*
hendrikvincent 0:05ccbd4f84f1 522 * Proceed to the network phase.
hendrikvincent 0:05ccbd4f84f1 523 */
hendrikvincent 0:05ccbd4f84f1 524 static void
hendrikvincent 0:05ccbd4f84f1 525 network_phase(int unit)
hendrikvincent 0:05ccbd4f84f1 526 {
hendrikvincent 0:05ccbd4f84f1 527 int i;
hendrikvincent 0:05ccbd4f84f1 528 struct protent *protp;
hendrikvincent 0:05ccbd4f84f1 529 lcp_options *go = &lcp_gotoptions[unit];
hendrikvincent 0:05ccbd4f84f1 530
hendrikvincent 0:05ccbd4f84f1 531 /*
hendrikvincent 0:05ccbd4f84f1 532 * If the peer had to authenticate, run the auth-up script now.
hendrikvincent 0:05ccbd4f84f1 533 */
hendrikvincent 0:05ccbd4f84f1 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
hendrikvincent 0:05ccbd4f84f1 535 /* XXX Do setup for peer authentication. */
hendrikvincent 0:05ccbd4f84f1 536 did_authup = 1;
hendrikvincent 0:05ccbd4f84f1 537 }
hendrikvincent 0:05ccbd4f84f1 538
hendrikvincent 0:05ccbd4f84f1 539 #if CBCP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 540 /*
hendrikvincent 0:05ccbd4f84f1 541 * If we negotiated callback, do it now.
hendrikvincent 0:05ccbd4f84f1 542 */
hendrikvincent 0:05ccbd4f84f1 543 if (go->neg_cbcp) {
hendrikvincent 0:05ccbd4f84f1 544 lcp_phase[unit] = PHASE_CALLBACK;
hendrikvincent 0:05ccbd4f84f1 545 (*cbcp_protent.open)(unit);
hendrikvincent 0:05ccbd4f84f1 546 return;
hendrikvincent 0:05ccbd4f84f1 547 }
hendrikvincent 0:05ccbd4f84f1 548 #endif /* CBCP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 549
hendrikvincent 0:05ccbd4f84f1 550 lcp_phase[unit] = PHASE_NETWORK;
hendrikvincent 0:05ccbd4f84f1 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hendrikvincent 0:05ccbd4f84f1 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
hendrikvincent 0:05ccbd4f84f1 553 (*protp->open)(unit);
hendrikvincent 0:05ccbd4f84f1 554 if (protp->protocol != PPP_CCP) {
hendrikvincent 0:05ccbd4f84f1 555 ++num_np_open;
hendrikvincent 0:05ccbd4f84f1 556 }
hendrikvincent 0:05ccbd4f84f1 557 }
hendrikvincent 0:05ccbd4f84f1 558 }
hendrikvincent 0:05ccbd4f84f1 559
hendrikvincent 0:05ccbd4f84f1 560 if (num_np_open == 0) {
hendrikvincent 0:05ccbd4f84f1 561 /* nothing to do */
hendrikvincent 0:05ccbd4f84f1 562 lcp_close(0, "No network protocols running");
hendrikvincent 0:05ccbd4f84f1 563 }
hendrikvincent 0:05ccbd4f84f1 564 }
hendrikvincent 0:05ccbd4f84f1 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
hendrikvincent 0:05ccbd4f84f1 566
hendrikvincent 0:05ccbd4f84f1 567 /*
hendrikvincent 0:05ccbd4f84f1 568 * The peer has failed to authenticate himself using `protocol'.
hendrikvincent 0:05ccbd4f84f1 569 */
hendrikvincent 0:05ccbd4f84f1 570 void
hendrikvincent 0:05ccbd4f84f1 571 auth_peer_fail(int unit, u16_t protocol)
hendrikvincent 0:05ccbd4f84f1 572 {
hendrikvincent 0:05ccbd4f84f1 573 LWIP_UNUSED_ARG(protocol);
hendrikvincent 0:05ccbd4f84f1 574
hendrikvincent 0:05ccbd4f84f1 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
hendrikvincent 0:05ccbd4f84f1 576 /*
hendrikvincent 0:05ccbd4f84f1 577 * Authentication failure: take the link down
hendrikvincent 0:05ccbd4f84f1 578 */
hendrikvincent 0:05ccbd4f84f1 579 lcp_close(unit, "Authentication failed");
hendrikvincent 0:05ccbd4f84f1 580 }
hendrikvincent 0:05ccbd4f84f1 581
hendrikvincent 0:05ccbd4f84f1 582
hendrikvincent 0:05ccbd4f84f1 583 #if PAP_SUPPORT || CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 584 /*
hendrikvincent 0:05ccbd4f84f1 585 * The peer has been successfully authenticated using `protocol'.
hendrikvincent 0:05ccbd4f84f1 586 */
hendrikvincent 0:05ccbd4f84f1 587 void
hendrikvincent 0:05ccbd4f84f1 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
hendrikvincent 0:05ccbd4f84f1 589 {
hendrikvincent 0:05ccbd4f84f1 590 int pbit;
hendrikvincent 0:05ccbd4f84f1 591
hendrikvincent 0:05ccbd4f84f1 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
hendrikvincent 0:05ccbd4f84f1 593 switch (protocol) {
hendrikvincent 0:05ccbd4f84f1 594 case PPP_CHAP:
hendrikvincent 0:05ccbd4f84f1 595 pbit = CHAP_PEER;
hendrikvincent 0:05ccbd4f84f1 596 break;
hendrikvincent 0:05ccbd4f84f1 597 case PPP_PAP:
hendrikvincent 0:05ccbd4f84f1 598 pbit = PAP_PEER;
hendrikvincent 0:05ccbd4f84f1 599 break;
hendrikvincent 0:05ccbd4f84f1 600 default:
hendrikvincent 0:05ccbd4f84f1 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
hendrikvincent 0:05ccbd4f84f1 602 return;
hendrikvincent 0:05ccbd4f84f1 603 }
hendrikvincent 0:05ccbd4f84f1 604
hendrikvincent 0:05ccbd4f84f1 605 /*
hendrikvincent 0:05ccbd4f84f1 606 * Save the authenticated name of the peer for later.
hendrikvincent 0:05ccbd4f84f1 607 */
hendrikvincent 0:05ccbd4f84f1 608 if (namelen > (int)sizeof(peer_authname) - 1) {
hendrikvincent 0:05ccbd4f84f1 609 namelen = sizeof(peer_authname) - 1;
hendrikvincent 0:05ccbd4f84f1 610 }
hendrikvincent 0:05ccbd4f84f1 611 BCOPY(name, peer_authname, namelen);
hendrikvincent 0:05ccbd4f84f1 612 peer_authname[namelen] = 0;
hendrikvincent 0:05ccbd4f84f1 613
hendrikvincent 0:05ccbd4f84f1 614 /*
hendrikvincent 0:05ccbd4f84f1 615 * If there is no more authentication still to be done,
hendrikvincent 0:05ccbd4f84f1 616 * proceed to the network (or callback) phase.
hendrikvincent 0:05ccbd4f84f1 617 */
hendrikvincent 0:05ccbd4f84f1 618 if ((auth_pending[unit] &= ~pbit) == 0) {
hendrikvincent 0:05ccbd4f84f1 619 network_phase(unit);
hendrikvincent 0:05ccbd4f84f1 620 }
hendrikvincent 0:05ccbd4f84f1 621 }
hendrikvincent 0:05ccbd4f84f1 622
hendrikvincent 0:05ccbd4f84f1 623 /*
hendrikvincent 0:05ccbd4f84f1 624 * We have failed to authenticate ourselves to the peer using `protocol'.
hendrikvincent 0:05ccbd4f84f1 625 */
hendrikvincent 0:05ccbd4f84f1 626 void
hendrikvincent 0:05ccbd4f84f1 627 auth_withpeer_fail(int unit, u16_t protocol)
hendrikvincent 0:05ccbd4f84f1 628 {
hendrikvincent 0:05ccbd4f84f1 629 int errCode = PPPERR_AUTHFAIL;
hendrikvincent 0:05ccbd4f84f1 630
hendrikvincent 0:05ccbd4f84f1 631 LWIP_UNUSED_ARG(protocol);
hendrikvincent 0:05ccbd4f84f1 632
hendrikvincent 0:05ccbd4f84f1 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
hendrikvincent 0:05ccbd4f84f1 634 if (passwd_from_file) {
hendrikvincent 0:05ccbd4f84f1 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
hendrikvincent 0:05ccbd4f84f1 636 }
hendrikvincent 0:05ccbd4f84f1 637
hendrikvincent 0:05ccbd4f84f1 638 /*
hendrikvincent 0:05ccbd4f84f1 639 * We've failed to authenticate ourselves to our peer.
hendrikvincent 0:05ccbd4f84f1 640 * He'll probably take the link down, and there's not much
hendrikvincent 0:05ccbd4f84f1 641 * we can do except wait for that.
hendrikvincent 0:05ccbd4f84f1 642 */
hendrikvincent 0:05ccbd4f84f1 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
hendrikvincent 0:05ccbd4f84f1 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
hendrikvincent 0:05ccbd4f84f1 645 }
hendrikvincent 0:05ccbd4f84f1 646
hendrikvincent 0:05ccbd4f84f1 647 /*
hendrikvincent 0:05ccbd4f84f1 648 * We have successfully authenticated ourselves with the peer using `protocol'.
hendrikvincent 0:05ccbd4f84f1 649 */
hendrikvincent 0:05ccbd4f84f1 650 void
hendrikvincent 0:05ccbd4f84f1 651 auth_withpeer_success(int unit, u16_t protocol)
hendrikvincent 0:05ccbd4f84f1 652 {
hendrikvincent 0:05ccbd4f84f1 653 int pbit;
hendrikvincent 0:05ccbd4f84f1 654
hendrikvincent 0:05ccbd4f84f1 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
hendrikvincent 0:05ccbd4f84f1 656 switch (protocol) {
hendrikvincent 0:05ccbd4f84f1 657 case PPP_CHAP:
hendrikvincent 0:05ccbd4f84f1 658 pbit = CHAP_WITHPEER;
hendrikvincent 0:05ccbd4f84f1 659 break;
hendrikvincent 0:05ccbd4f84f1 660 case PPP_PAP:
hendrikvincent 0:05ccbd4f84f1 661 if (passwd_from_file) {
hendrikvincent 0:05ccbd4f84f1 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
hendrikvincent 0:05ccbd4f84f1 663 }
hendrikvincent 0:05ccbd4f84f1 664 pbit = PAP_WITHPEER;
hendrikvincent 0:05ccbd4f84f1 665 break;
hendrikvincent 0:05ccbd4f84f1 666 default:
hendrikvincent 0:05ccbd4f84f1 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
hendrikvincent 0:05ccbd4f84f1 668 pbit = 0;
hendrikvincent 0:05ccbd4f84f1 669 }
hendrikvincent 0:05ccbd4f84f1 670
hendrikvincent 0:05ccbd4f84f1 671 /*
hendrikvincent 0:05ccbd4f84f1 672 * If there is no more authentication still being done,
hendrikvincent 0:05ccbd4f84f1 673 * proceed to the network (or callback) phase.
hendrikvincent 0:05ccbd4f84f1 674 */
hendrikvincent 0:05ccbd4f84f1 675 if ((auth_pending[unit] &= ~pbit) == 0) {
hendrikvincent 0:05ccbd4f84f1 676 network_phase(unit);
hendrikvincent 0:05ccbd4f84f1 677 }
hendrikvincent 0:05ccbd4f84f1 678 }
hendrikvincent 0:05ccbd4f84f1 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 680
hendrikvincent 0:05ccbd4f84f1 681
hendrikvincent 0:05ccbd4f84f1 682 /*
hendrikvincent 0:05ccbd4f84f1 683 * np_up - a network protocol has come up.
hendrikvincent 0:05ccbd4f84f1 684 */
hendrikvincent 0:05ccbd4f84f1 685 void
hendrikvincent 0:05ccbd4f84f1 686 np_up(int unit, u16_t proto)
hendrikvincent 0:05ccbd4f84f1 687 {
hendrikvincent 0:05ccbd4f84f1 688 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 689 LWIP_UNUSED_ARG(proto);
hendrikvincent 0:05ccbd4f84f1 690
hendrikvincent 0:05ccbd4f84f1 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
hendrikvincent 0:05ccbd4f84f1 692 if (num_np_up == 0) {
hendrikvincent 0:05ccbd4f84f1 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
hendrikvincent 0:05ccbd4f84f1 694 /*
hendrikvincent 0:05ccbd4f84f1 695 * At this point we consider that the link has come up successfully.
hendrikvincent 0:05ccbd4f84f1 696 */
hendrikvincent 0:05ccbd4f84f1 697 if (ppp_settings.idle_time_limit > 0) {
hendrikvincent 0:05ccbd4f84f1 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
hendrikvincent 0:05ccbd4f84f1 699 }
hendrikvincent 0:05ccbd4f84f1 700
hendrikvincent 0:05ccbd4f84f1 701 /*
hendrikvincent 0:05ccbd4f84f1 702 * Set a timeout to close the connection once the maximum
hendrikvincent 0:05ccbd4f84f1 703 * connect time has expired.
hendrikvincent 0:05ccbd4f84f1 704 */
hendrikvincent 0:05ccbd4f84f1 705 if (ppp_settings.maxconnect > 0) {
hendrikvincent 0:05ccbd4f84f1 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
hendrikvincent 0:05ccbd4f84f1 707 }
hendrikvincent 0:05ccbd4f84f1 708 }
hendrikvincent 0:05ccbd4f84f1 709 ++num_np_up;
hendrikvincent 0:05ccbd4f84f1 710 }
hendrikvincent 0:05ccbd4f84f1 711
hendrikvincent 0:05ccbd4f84f1 712 /*
hendrikvincent 0:05ccbd4f84f1 713 * np_down - a network protocol has gone down.
hendrikvincent 0:05ccbd4f84f1 714 */
hendrikvincent 0:05ccbd4f84f1 715 void
hendrikvincent 0:05ccbd4f84f1 716 np_down(int unit, u16_t proto)
hendrikvincent 0:05ccbd4f84f1 717 {
hendrikvincent 0:05ccbd4f84f1 718 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 719 LWIP_UNUSED_ARG(proto);
hendrikvincent 0:05ccbd4f84f1 720
hendrikvincent 0:05ccbd4f84f1 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
hendrikvincent 0:05ccbd4f84f1 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
hendrikvincent 0:05ccbd4f84f1 723 UNTIMEOUT(check_idle, NULL);
hendrikvincent 0:05ccbd4f84f1 724 }
hendrikvincent 0:05ccbd4f84f1 725 }
hendrikvincent 0:05ccbd4f84f1 726
hendrikvincent 0:05ccbd4f84f1 727 /*
hendrikvincent 0:05ccbd4f84f1 728 * np_finished - a network protocol has finished using the link.
hendrikvincent 0:05ccbd4f84f1 729 */
hendrikvincent 0:05ccbd4f84f1 730 void
hendrikvincent 0:05ccbd4f84f1 731 np_finished(int unit, u16_t proto)
hendrikvincent 0:05ccbd4f84f1 732 {
hendrikvincent 0:05ccbd4f84f1 733 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 734 LWIP_UNUSED_ARG(proto);
hendrikvincent 0:05ccbd4f84f1 735
hendrikvincent 0:05ccbd4f84f1 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
hendrikvincent 0:05ccbd4f84f1 737 if (--num_np_open <= 0) {
hendrikvincent 0:05ccbd4f84f1 738 /* no further use for the link: shut up shop. */
hendrikvincent 0:05ccbd4f84f1 739 lcp_close(0, "No network protocols running");
hendrikvincent 0:05ccbd4f84f1 740 }
hendrikvincent 0:05ccbd4f84f1 741 }
hendrikvincent 0:05ccbd4f84f1 742
hendrikvincent 0:05ccbd4f84f1 743 /*
hendrikvincent 0:05ccbd4f84f1 744 * check_idle - check whether the link has been idle for long
hendrikvincent 0:05ccbd4f84f1 745 * enough that we can shut it down.
hendrikvincent 0:05ccbd4f84f1 746 */
hendrikvincent 0:05ccbd4f84f1 747 static void
hendrikvincent 0:05ccbd4f84f1 748 check_idle(void *arg)
hendrikvincent 0:05ccbd4f84f1 749 {
hendrikvincent 0:05ccbd4f84f1 750 struct ppp_idle idle;
hendrikvincent 0:05ccbd4f84f1 751 u_short itime;
hendrikvincent 0:05ccbd4f84f1 752
hendrikvincent 0:05ccbd4f84f1 753 LWIP_UNUSED_ARG(arg);
hendrikvincent 0:05ccbd4f84f1 754 if (!get_idle_time(0, &idle)) {
hendrikvincent 0:05ccbd4f84f1 755 return;
hendrikvincent 0:05ccbd4f84f1 756 }
hendrikvincent 0:05ccbd4f84f1 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
hendrikvincent 0:05ccbd4f84f1 758 if (itime >= ppp_settings.idle_time_limit) {
hendrikvincent 0:05ccbd4f84f1 759 /* link is idle: shut it down. */
hendrikvincent 0:05ccbd4f84f1 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
hendrikvincent 0:05ccbd4f84f1 761 lcp_close(0, "Link inactive");
hendrikvincent 0:05ccbd4f84f1 762 } else {
hendrikvincent 0:05ccbd4f84f1 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
hendrikvincent 0:05ccbd4f84f1 764 }
hendrikvincent 0:05ccbd4f84f1 765 }
hendrikvincent 0:05ccbd4f84f1 766
hendrikvincent 0:05ccbd4f84f1 767 /*
hendrikvincent 0:05ccbd4f84f1 768 * connect_time_expired - log a message and close the connection.
hendrikvincent 0:05ccbd4f84f1 769 */
hendrikvincent 0:05ccbd4f84f1 770 static void
hendrikvincent 0:05ccbd4f84f1 771 connect_time_expired(void *arg)
hendrikvincent 0:05ccbd4f84f1 772 {
hendrikvincent 0:05ccbd4f84f1 773 LWIP_UNUSED_ARG(arg);
hendrikvincent 0:05ccbd4f84f1 774
hendrikvincent 0:05ccbd4f84f1 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
hendrikvincent 0:05ccbd4f84f1 776 lcp_close(0, "Connect time expired"); /* Close connection */
hendrikvincent 0:05ccbd4f84f1 777 }
hendrikvincent 0:05ccbd4f84f1 778
hendrikvincent 0:05ccbd4f84f1 779 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 780 /*
hendrikvincent 0:05ccbd4f84f1 781 * auth_check_options - called to check authentication options.
hendrikvincent 0:05ccbd4f84f1 782 */
hendrikvincent 0:05ccbd4f84f1 783 void
hendrikvincent 0:05ccbd4f84f1 784 auth_check_options(void)
hendrikvincent 0:05ccbd4f84f1 785 {
hendrikvincent 0:05ccbd4f84f1 786 lcp_options *wo = &lcp_wantoptions[0];
hendrikvincent 0:05ccbd4f84f1 787 int can_auth;
hendrikvincent 0:05ccbd4f84f1 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
hendrikvincent 0:05ccbd4f84f1 789 u32_t remote;
hendrikvincent 0:05ccbd4f84f1 790
hendrikvincent 0:05ccbd4f84f1 791 /* Default our_name to hostname, and user to our_name */
hendrikvincent 0:05ccbd4f84f1 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
hendrikvincent 0:05ccbd4f84f1 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
hendrikvincent 0:05ccbd4f84f1 794 }
hendrikvincent 0:05ccbd4f84f1 795
hendrikvincent 0:05ccbd4f84f1 796 if (ppp_settings.user[0] == 0) {
hendrikvincent 0:05ccbd4f84f1 797 strcpy(ppp_settings.user, ppp_settings.our_name);
hendrikvincent 0:05ccbd4f84f1 798 }
hendrikvincent 0:05ccbd4f84f1 799
hendrikvincent 0:05ccbd4f84f1 800 /* If authentication is required, ask peer for CHAP or PAP. */
hendrikvincent 0:05ccbd4f84f1 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
hendrikvincent 0:05ccbd4f84f1 802 wo->neg_chap = 1;
hendrikvincent 0:05ccbd4f84f1 803 wo->neg_upap = 1;
hendrikvincent 0:05ccbd4f84f1 804 }
hendrikvincent 0:05ccbd4f84f1 805
hendrikvincent 0:05ccbd4f84f1 806 /*
hendrikvincent 0:05ccbd4f84f1 807 * Check whether we have appropriate secrets to use
hendrikvincent 0:05ccbd4f84f1 808 * to authenticate the peer.
hendrikvincent 0:05ccbd4f84f1 809 */
hendrikvincent 0:05ccbd4f84f1 810 can_auth = wo->neg_upap && have_pap_secret();
hendrikvincent 0:05ccbd4f84f1 811 if (!can_auth && wo->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
hendrikvincent 0:05ccbd4f84f1 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
hendrikvincent 0:05ccbd4f84f1 814 }
hendrikvincent 0:05ccbd4f84f1 815
hendrikvincent 0:05ccbd4f84f1 816 if (ppp_settings.auth_required && !can_auth) {
hendrikvincent 0:05ccbd4f84f1 817 ppp_panic("No auth secret");
hendrikvincent 0:05ccbd4f84f1 818 }
hendrikvincent 0:05ccbd4f84f1 819 }
hendrikvincent 0:05ccbd4f84f1 820 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 821
hendrikvincent 0:05ccbd4f84f1 822 /*
hendrikvincent 0:05ccbd4f84f1 823 * auth_reset - called when LCP is starting negotiations to recheck
hendrikvincent 0:05ccbd4f84f1 824 * authentication options, i.e. whether we have appropriate secrets
hendrikvincent 0:05ccbd4f84f1 825 * to use for authenticating ourselves and/or the peer.
hendrikvincent 0:05ccbd4f84f1 826 */
hendrikvincent 0:05ccbd4f84f1 827 void
hendrikvincent 0:05ccbd4f84f1 828 auth_reset(int unit)
hendrikvincent 0:05ccbd4f84f1 829 {
hendrikvincent 0:05ccbd4f84f1 830 lcp_options *go = &lcp_gotoptions[unit];
hendrikvincent 0:05ccbd4f84f1 831 lcp_options *ao = &lcp_allowoptions[0];
hendrikvincent 0:05ccbd4f84f1 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
hendrikvincent 0:05ccbd4f84f1 833 u32_t remote;
hendrikvincent 0:05ccbd4f84f1 834
hendrikvincent 0:05ccbd4f84f1 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
hendrikvincent 0:05ccbd4f84f1 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
hendrikvincent 0:05ccbd4f84f1 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)*/;
hendrikvincent 0:05ccbd4f84f1 838
hendrikvincent 0:05ccbd4f84f1 839 if (go->neg_upap && !have_pap_secret()) {
hendrikvincent 0:05ccbd4f84f1 840 go->neg_upap = 0;
hendrikvincent 0:05ccbd4f84f1 841 }
hendrikvincent 0:05ccbd4f84f1 842 if (go->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
hendrikvincent 0:05ccbd4f84f1 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
hendrikvincent 0:05ccbd4f84f1 845 go->neg_chap = 0;
hendrikvincent 0:05ccbd4f84f1 846 }
hendrikvincent 0:05ccbd4f84f1 847 }
hendrikvincent 0:05ccbd4f84f1 848 }
hendrikvincent 0:05ccbd4f84f1 849
hendrikvincent 0:05ccbd4f84f1 850 #if PAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 851 /*
hendrikvincent 0:05ccbd4f84f1 852 * check_passwd - Check the user name and passwd against the PAP secrets
hendrikvincent 0:05ccbd4f84f1 853 * file. If requested, also check against the system password database,
hendrikvincent 0:05ccbd4f84f1 854 * and login the user if OK.
hendrikvincent 0:05ccbd4f84f1 855 *
hendrikvincent 0:05ccbd4f84f1 856 * returns:
hendrikvincent 0:05ccbd4f84f1 857 * UPAP_AUTHNAK: Authentication failed.
hendrikvincent 0:05ccbd4f84f1 858 * UPAP_AUTHACK: Authentication succeeded.
hendrikvincent 0:05ccbd4f84f1 859 * In either case, msg points to an appropriate message.
hendrikvincent 0:05ccbd4f84f1 860 */
hendrikvincent 0:05ccbd4f84f1 861 u_char
hendrikvincent 0:05ccbd4f84f1 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
hendrikvincent 0:05ccbd4f84f1 863 {
hendrikvincent 0:05ccbd4f84f1 864 #if 1 /* XXX Assume all entries OK. */
hendrikvincent 0:05ccbd4f84f1 865 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 866 LWIP_UNUSED_ARG(auser);
hendrikvincent 0:05ccbd4f84f1 867 LWIP_UNUSED_ARG(userlen);
hendrikvincent 0:05ccbd4f84f1 868 LWIP_UNUSED_ARG(apasswd);
hendrikvincent 0:05ccbd4f84f1 869 LWIP_UNUSED_ARG(passwdlen);
hendrikvincent 0:05ccbd4f84f1 870 LWIP_UNUSED_ARG(msglen);
hendrikvincent 0:05ccbd4f84f1 871 *msg = (char *) 0;
hendrikvincent 0:05ccbd4f84f1 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
hendrikvincent 0:05ccbd4f84f1 873 #else
hendrikvincent 0:05ccbd4f84f1 874 u_char ret = 0;
hendrikvincent 0:05ccbd4f84f1 875 struct wordlist *addrs = NULL;
hendrikvincent 0:05ccbd4f84f1 876 char passwd[256], user[256];
hendrikvincent 0:05ccbd4f84f1 877 char secret[MAXWORDLEN];
hendrikvincent 0:05ccbd4f84f1 878 static u_short attempts = 0;
hendrikvincent 0:05ccbd4f84f1 879
hendrikvincent 0:05ccbd4f84f1 880 /*
hendrikvincent 0:05ccbd4f84f1 881 * Make copies of apasswd and auser, then null-terminate them.
hendrikvincent 0:05ccbd4f84f1 882 */
hendrikvincent 0:05ccbd4f84f1 883 BCOPY(apasswd, passwd, passwdlen);
hendrikvincent 0:05ccbd4f84f1 884 passwd[passwdlen] = '\0';
hendrikvincent 0:05ccbd4f84f1 885 BCOPY(auser, user, userlen);
hendrikvincent 0:05ccbd4f84f1 886 user[userlen] = '\0';
hendrikvincent 0:05ccbd4f84f1 887 *msg = (char *) 0;
hendrikvincent 0:05ccbd4f84f1 888
hendrikvincent 0:05ccbd4f84f1 889 /* XXX Validate user name and password. */
hendrikvincent 0:05ccbd4f84f1 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
hendrikvincent 0:05ccbd4f84f1 891
hendrikvincent 0:05ccbd4f84f1 892 if (ret == UPAP_AUTHNAK) {
hendrikvincent 0:05ccbd4f84f1 893 if (*msg == (char *) 0) {
hendrikvincent 0:05ccbd4f84f1 894 *msg = "Login incorrect";
hendrikvincent 0:05ccbd4f84f1 895 }
hendrikvincent 0:05ccbd4f84f1 896 *msglen = strlen(*msg);
hendrikvincent 0:05ccbd4f84f1 897 /*
hendrikvincent 0:05ccbd4f84f1 898 * Frustrate passwd stealer programs.
hendrikvincent 0:05ccbd4f84f1 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
hendrikvincent 0:05ccbd4f84f1 900 * On 10'th, drop the connection.
hendrikvincent 0:05ccbd4f84f1 901 */
hendrikvincent 0:05ccbd4f84f1 902 if (attempts++ >= 10) {
hendrikvincent 0:05ccbd4f84f1 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
hendrikvincent 0:05ccbd4f84f1 904 /*ppp_panic("Excess Bad Logins");*/
hendrikvincent 0:05ccbd4f84f1 905 }
hendrikvincent 0:05ccbd4f84f1 906 if (attempts > 3) {
hendrikvincent 0:05ccbd4f84f1 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
hendrikvincent 0:05ccbd4f84f1 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
hendrikvincent 0:05ccbd4f84f1 909 */
hendrikvincent 0:05ccbd4f84f1 910 /*sys_msleep((attempts - 3) * 5);*/
hendrikvincent 0:05ccbd4f84f1 911 }
hendrikvincent 0:05ccbd4f84f1 912 if (addrs != NULL) {
hendrikvincent 0:05ccbd4f84f1 913 free_wordlist(addrs);
hendrikvincent 0:05ccbd4f84f1 914 }
hendrikvincent 0:05ccbd4f84f1 915 } else {
hendrikvincent 0:05ccbd4f84f1 916 attempts = 0; /* Reset count */
hendrikvincent 0:05ccbd4f84f1 917 if (*msg == (char *) 0) {
hendrikvincent 0:05ccbd4f84f1 918 *msg = "Login ok";
hendrikvincent 0:05ccbd4f84f1 919 }
hendrikvincent 0:05ccbd4f84f1 920 *msglen = strlen(*msg);
hendrikvincent 0:05ccbd4f84f1 921 set_allowed_addrs(unit, addrs);
hendrikvincent 0:05ccbd4f84f1 922 }
hendrikvincent 0:05ccbd4f84f1 923
hendrikvincent 0:05ccbd4f84f1 924 BZERO(passwd, sizeof(passwd));
hendrikvincent 0:05ccbd4f84f1 925 BZERO(secret, sizeof(secret));
hendrikvincent 0:05ccbd4f84f1 926
hendrikvincent 0:05ccbd4f84f1 927 return ret;
hendrikvincent 0:05ccbd4f84f1 928 #endif
hendrikvincent 0:05ccbd4f84f1 929 }
hendrikvincent 0:05ccbd4f84f1 930 #endif /* PAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 931
hendrikvincent 0:05ccbd4f84f1 932 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 933 /*
hendrikvincent 0:05ccbd4f84f1 934 * This function is needed for PAM.
hendrikvincent 0:05ccbd4f84f1 935 */
hendrikvincent 0:05ccbd4f84f1 936
hendrikvincent 0:05ccbd4f84f1 937 #ifdef USE_PAM
hendrikvincent 0:05ccbd4f84f1 938
hendrikvincent 0:05ccbd4f84f1 939 /* lwip does not support PAM*/
hendrikvincent 0:05ccbd4f84f1 940
hendrikvincent 0:05ccbd4f84f1 941 #endif /* USE_PAM */
hendrikvincent 0:05ccbd4f84f1 942
hendrikvincent 0:05ccbd4f84f1 943 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 944
hendrikvincent 0:05ccbd4f84f1 945
hendrikvincent 0:05ccbd4f84f1 946 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 947 /*
hendrikvincent 0:05ccbd4f84f1 948 * plogin - Check the user name and password against the system
hendrikvincent 0:05ccbd4f84f1 949 * password database, and login the user if OK.
hendrikvincent 0:05ccbd4f84f1 950 *
hendrikvincent 0:05ccbd4f84f1 951 * returns:
hendrikvincent 0:05ccbd4f84f1 952 * UPAP_AUTHNAK: Login failed.
hendrikvincent 0:05ccbd4f84f1 953 * UPAP_AUTHACK: Login succeeded.
hendrikvincent 0:05ccbd4f84f1 954 * In either case, msg points to an appropriate message.
hendrikvincent 0:05ccbd4f84f1 955 */
hendrikvincent 0:05ccbd4f84f1 956 static int
hendrikvincent 0:05ccbd4f84f1 957 plogin(char *user, char *passwd, char **msg, int *msglen)
hendrikvincent 0:05ccbd4f84f1 958 {
hendrikvincent 0:05ccbd4f84f1 959
hendrikvincent 0:05ccbd4f84f1 960 LWIP_UNUSED_ARG(user);
hendrikvincent 0:05ccbd4f84f1 961 LWIP_UNUSED_ARG(passwd);
hendrikvincent 0:05ccbd4f84f1 962 LWIP_UNUSED_ARG(msg);
hendrikvincent 0:05ccbd4f84f1 963 LWIP_UNUSED_ARG(msglen);
hendrikvincent 0:05ccbd4f84f1 964
hendrikvincent 0:05ccbd4f84f1 965
hendrikvincent 0:05ccbd4f84f1 966 /* The new lines are here align the file when
hendrikvincent 0:05ccbd4f84f1 967 * compared against the pppd 2.3.11 code */
hendrikvincent 0:05ccbd4f84f1 968
hendrikvincent 0:05ccbd4f84f1 969
hendrikvincent 0:05ccbd4f84f1 970
hendrikvincent 0:05ccbd4f84f1 971
hendrikvincent 0:05ccbd4f84f1 972
hendrikvincent 0:05ccbd4f84f1 973
hendrikvincent 0:05ccbd4f84f1 974
hendrikvincent 0:05ccbd4f84f1 975
hendrikvincent 0:05ccbd4f84f1 976
hendrikvincent 0:05ccbd4f84f1 977
hendrikvincent 0:05ccbd4f84f1 978
hendrikvincent 0:05ccbd4f84f1 979
hendrikvincent 0:05ccbd4f84f1 980
hendrikvincent 0:05ccbd4f84f1 981
hendrikvincent 0:05ccbd4f84f1 982
hendrikvincent 0:05ccbd4f84f1 983
hendrikvincent 0:05ccbd4f84f1 984 /* XXX Fail until we decide that we want to support logins. */
hendrikvincent 0:05ccbd4f84f1 985 return (UPAP_AUTHNAK);
hendrikvincent 0:05ccbd4f84f1 986 }
hendrikvincent 0:05ccbd4f84f1 987 #endif
hendrikvincent 0:05ccbd4f84f1 988
hendrikvincent 0:05ccbd4f84f1 989
hendrikvincent 0:05ccbd4f84f1 990
hendrikvincent 0:05ccbd4f84f1 991 /*
hendrikvincent 0:05ccbd4f84f1 992 * plogout - Logout the user.
hendrikvincent 0:05ccbd4f84f1 993 */
hendrikvincent 0:05ccbd4f84f1 994 static void
hendrikvincent 0:05ccbd4f84f1 995 plogout(void)
hendrikvincent 0:05ccbd4f84f1 996 {
hendrikvincent 0:05ccbd4f84f1 997 logged_in = 0;
hendrikvincent 0:05ccbd4f84f1 998 }
hendrikvincent 0:05ccbd4f84f1 999
hendrikvincent 0:05ccbd4f84f1 1000 /*
hendrikvincent 0:05ccbd4f84f1 1001 * null_login - Check if a username of "" and a password of "" are
hendrikvincent 0:05ccbd4f84f1 1002 * acceptable, and iff so, set the list of acceptable IP addresses
hendrikvincent 0:05ccbd4f84f1 1003 * and return 1.
hendrikvincent 0:05ccbd4f84f1 1004 */
hendrikvincent 0:05ccbd4f84f1 1005 static int
hendrikvincent 0:05ccbd4f84f1 1006 null_login(int unit)
hendrikvincent 0:05ccbd4f84f1 1007 {
hendrikvincent 0:05ccbd4f84f1 1008 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 1009 /* XXX Fail until we decide that we want to support logins. */
hendrikvincent 0:05ccbd4f84f1 1010 return 0;
hendrikvincent 0:05ccbd4f84f1 1011 }
hendrikvincent 0:05ccbd4f84f1 1012
hendrikvincent 0:05ccbd4f84f1 1013
hendrikvincent 0:05ccbd4f84f1 1014 /*
hendrikvincent 0:05ccbd4f84f1 1015 * get_pap_passwd - get a password for authenticating ourselves with
hendrikvincent 0:05ccbd4f84f1 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
hendrikvincent 0:05ccbd4f84f1 1017 * could be found.
hendrikvincent 0:05ccbd4f84f1 1018 */
hendrikvincent 0:05ccbd4f84f1 1019 static int
hendrikvincent 0:05ccbd4f84f1 1020 get_pap_passwd(int unit, char *user, char *passwd)
hendrikvincent 0:05ccbd4f84f1 1021 {
hendrikvincent 0:05ccbd4f84f1 1022 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 1023 /* normally we would reject PAP if no password is provided,
hendrikvincent 0:05ccbd4f84f1 1024 but this causes problems with some providers (like CHT in Taiwan)
hendrikvincent 0:05ccbd4f84f1 1025 who incorrectly request PAP and expect a bogus/empty password, so
hendrikvincent 0:05ccbd4f84f1 1026 always provide a default user/passwd of "none"/"none"
hendrikvincent 0:05ccbd4f84f1 1027
hendrikvincent 0:05ccbd4f84f1 1028 @todo: This should be configured by the user, instead of being hardcoded here!
hendrikvincent 0:05ccbd4f84f1 1029 */
hendrikvincent 0:05ccbd4f84f1 1030 if(user) {
hendrikvincent 0:05ccbd4f84f1 1031 strcpy(user, "none");
hendrikvincent 0:05ccbd4f84f1 1032 }
hendrikvincent 0:05ccbd4f84f1 1033 if(passwd) {
hendrikvincent 0:05ccbd4f84f1 1034 strcpy(passwd, "none");
hendrikvincent 0:05ccbd4f84f1 1035 }
hendrikvincent 0:05ccbd4f84f1 1036 return 1;
hendrikvincent 0:05ccbd4f84f1 1037 }
hendrikvincent 0:05ccbd4f84f1 1038
hendrikvincent 0:05ccbd4f84f1 1039 /*
hendrikvincent 0:05ccbd4f84f1 1040 * have_pap_secret - check whether we have a PAP file with any
hendrikvincent 0:05ccbd4f84f1 1041 * secrets that we could possibly use for authenticating the peer.
hendrikvincent 0:05ccbd4f84f1 1042 */
hendrikvincent 0:05ccbd4f84f1 1043 static int
hendrikvincent 0:05ccbd4f84f1 1044 have_pap_secret(void)
hendrikvincent 0:05ccbd4f84f1 1045 {
hendrikvincent 0:05ccbd4f84f1 1046 /* XXX Fail until we set up our passwords. */
hendrikvincent 0:05ccbd4f84f1 1047 return 0;
hendrikvincent 0:05ccbd4f84f1 1048 }
hendrikvincent 0:05ccbd4f84f1 1049
hendrikvincent 0:05ccbd4f84f1 1050 /*
hendrikvincent 0:05ccbd4f84f1 1051 * have_chap_secret - check whether we have a CHAP file with a
hendrikvincent 0:05ccbd4f84f1 1052 * secret that we could possibly use for authenticating `client'
hendrikvincent 0:05ccbd4f84f1 1053 * on `server'. Either can be the null string, meaning we don't
hendrikvincent 0:05ccbd4f84f1 1054 * know the identity yet.
hendrikvincent 0:05ccbd4f84f1 1055 */
hendrikvincent 0:05ccbd4f84f1 1056 static int
hendrikvincent 0:05ccbd4f84f1 1057 have_chap_secret(char *client, char *server, u32_t remote)
hendrikvincent 0:05ccbd4f84f1 1058 {
hendrikvincent 0:05ccbd4f84f1 1059 LWIP_UNUSED_ARG(client);
hendrikvincent 0:05ccbd4f84f1 1060 LWIP_UNUSED_ARG(server);
hendrikvincent 0:05ccbd4f84f1 1061 LWIP_UNUSED_ARG(remote);
hendrikvincent 0:05ccbd4f84f1 1062
hendrikvincent 0:05ccbd4f84f1 1063 /* XXX Fail until we set up our passwords. */
hendrikvincent 0:05ccbd4f84f1 1064 return 0;
hendrikvincent 0:05ccbd4f84f1 1065 }
hendrikvincent 0:05ccbd4f84f1 1066 #if CHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 1067
hendrikvincent 0:05ccbd4f84f1 1068 /*
hendrikvincent 0:05ccbd4f84f1 1069 * get_secret - open the CHAP secret file and return the secret
hendrikvincent 0:05ccbd4f84f1 1070 * for authenticating the given client on the given server.
hendrikvincent 0:05ccbd4f84f1 1071 * (We could be either client or server).
hendrikvincent 0:05ccbd4f84f1 1072 */
hendrikvincent 0:05ccbd4f84f1 1073 int
hendrikvincent 0:05ccbd4f84f1 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
hendrikvincent 0:05ccbd4f84f1 1075 {
hendrikvincent 0:05ccbd4f84f1 1076 #if 1
hendrikvincent 0:05ccbd4f84f1 1077 int len;
hendrikvincent 0:05ccbd4f84f1 1078 struct wordlist *addrs;
hendrikvincent 0:05ccbd4f84f1 1079
hendrikvincent 0:05ccbd4f84f1 1080 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 1081 LWIP_UNUSED_ARG(server);
hendrikvincent 0:05ccbd4f84f1 1082 LWIP_UNUSED_ARG(save_addrs);
hendrikvincent 0:05ccbd4f84f1 1083
hendrikvincent 0:05ccbd4f84f1 1084 addrs = NULL;
hendrikvincent 0:05ccbd4f84f1 1085
hendrikvincent 0:05ccbd4f84f1 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
hendrikvincent 0:05ccbd4f84f1 1087 return 0;
hendrikvincent 0:05ccbd4f84f1 1088 }
hendrikvincent 0:05ccbd4f84f1 1089
hendrikvincent 0:05ccbd4f84f1 1090 len = (int)strlen(ppp_settings.passwd);
hendrikvincent 0:05ccbd4f84f1 1091 if (len > MAXSECRETLEN) {
hendrikvincent 0:05ccbd4f84f1 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
hendrikvincent 0:05ccbd4f84f1 1093 len = MAXSECRETLEN;
hendrikvincent 0:05ccbd4f84f1 1094 }
hendrikvincent 0:05ccbd4f84f1 1095
hendrikvincent 0:05ccbd4f84f1 1096 BCOPY(ppp_settings.passwd, secret, len);
hendrikvincent 0:05ccbd4f84f1 1097 *secret_len = len;
hendrikvincent 0:05ccbd4f84f1 1098
hendrikvincent 0:05ccbd4f84f1 1099 return 1;
hendrikvincent 0:05ccbd4f84f1 1100 #else
hendrikvincent 0:05ccbd4f84f1 1101 int ret = 0, len;
hendrikvincent 0:05ccbd4f84f1 1102 struct wordlist *addrs;
hendrikvincent 0:05ccbd4f84f1 1103 char secbuf[MAXWORDLEN];
hendrikvincent 0:05ccbd4f84f1 1104
hendrikvincent 0:05ccbd4f84f1 1105 addrs = NULL;
hendrikvincent 0:05ccbd4f84f1 1106 secbuf[0] = 0;
hendrikvincent 0:05ccbd4f84f1 1107
hendrikvincent 0:05ccbd4f84f1 1108 /* XXX Find secret. */
hendrikvincent 0:05ccbd4f84f1 1109 if (ret < 0) {
hendrikvincent 0:05ccbd4f84f1 1110 return 0;
hendrikvincent 0:05ccbd4f84f1 1111 }
hendrikvincent 0:05ccbd4f84f1 1112
hendrikvincent 0:05ccbd4f84f1 1113 if (save_addrs) {
hendrikvincent 0:05ccbd4f84f1 1114 set_allowed_addrs(unit, addrs);
hendrikvincent 0:05ccbd4f84f1 1115 }
hendrikvincent 0:05ccbd4f84f1 1116
hendrikvincent 0:05ccbd4f84f1 1117 len = strlen(secbuf);
hendrikvincent 0:05ccbd4f84f1 1118 if (len > MAXSECRETLEN) {
hendrikvincent 0:05ccbd4f84f1 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
hendrikvincent 0:05ccbd4f84f1 1120 len = MAXSECRETLEN;
hendrikvincent 0:05ccbd4f84f1 1121 }
hendrikvincent 0:05ccbd4f84f1 1122
hendrikvincent 0:05ccbd4f84f1 1123 BCOPY(secbuf, secret, len);
hendrikvincent 0:05ccbd4f84f1 1124 BZERO(secbuf, sizeof(secbuf));
hendrikvincent 0:05ccbd4f84f1 1125 *secret_len = len;
hendrikvincent 0:05ccbd4f84f1 1126
hendrikvincent 0:05ccbd4f84f1 1127 return 1;
hendrikvincent 0:05ccbd4f84f1 1128 #endif
hendrikvincent 0:05ccbd4f84f1 1129 }
hendrikvincent 0:05ccbd4f84f1 1130 #endif /* CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 1131
hendrikvincent 0:05ccbd4f84f1 1132
hendrikvincent 0:05ccbd4f84f1 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 1134 /*
hendrikvincent 0:05ccbd4f84f1 1135 * set_allowed_addrs() - set the list of allowed addresses.
hendrikvincent 0:05ccbd4f84f1 1136 */
hendrikvincent 0:05ccbd4f84f1 1137 static void
hendrikvincent 0:05ccbd4f84f1 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
hendrikvincent 0:05ccbd4f84f1 1139 {
hendrikvincent 0:05ccbd4f84f1 1140 if (addresses[unit] != NULL) {
hendrikvincent 0:05ccbd4f84f1 1141 free_wordlist(addresses[unit]);
hendrikvincent 0:05ccbd4f84f1 1142 }
hendrikvincent 0:05ccbd4f84f1 1143 addresses[unit] = addrs;
hendrikvincent 0:05ccbd4f84f1 1144
hendrikvincent 0:05ccbd4f84f1 1145 #if 0
hendrikvincent 0:05ccbd4f84f1 1146 /*
hendrikvincent 0:05ccbd4f84f1 1147 * If there's only one authorized address we might as well
hendrikvincent 0:05ccbd4f84f1 1148 * ask our peer for that one right away
hendrikvincent 0:05ccbd4f84f1 1149 */
hendrikvincent 0:05ccbd4f84f1 1150 if (addrs != NULL && addrs->next == NULL) {
hendrikvincent 0:05ccbd4f84f1 1151 char *p = addrs->word;
hendrikvincent 0:05ccbd4f84f1 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
hendrikvincent 0:05ccbd4f84f1 1153 u32_t a;
hendrikvincent 0:05ccbd4f84f1 1154 struct hostent *hp;
hendrikvincent 0:05ccbd4f84f1 1155
hendrikvincent 0:05ccbd4f84f1 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
hendrikvincent 0:05ccbd4f84f1 1157 hp = gethostbyname(p);
hendrikvincent 0:05ccbd4f84f1 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
hendrikvincent 0:05ccbd4f84f1 1159 a = *(u32_t *)hp->h_addr;
hendrikvincent 0:05ccbd4f84f1 1160 } else {
hendrikvincent 0:05ccbd4f84f1 1161 a = inet_addr(p);
hendrikvincent 0:05ccbd4f84f1 1162 }
hendrikvincent 0:05ccbd4f84f1 1163 if (a != (u32_t) -1) {
hendrikvincent 0:05ccbd4f84f1 1164 wo->hisaddr = a;
hendrikvincent 0:05ccbd4f84f1 1165 }
hendrikvincent 0:05ccbd4f84f1 1166 }
hendrikvincent 0:05ccbd4f84f1 1167 }
hendrikvincent 0:05ccbd4f84f1 1168 #endif
hendrikvincent 0:05ccbd4f84f1 1169 }
hendrikvincent 0:05ccbd4f84f1 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 1171
hendrikvincent 0:05ccbd4f84f1 1172 /*
hendrikvincent 0:05ccbd4f84f1 1173 * auth_ip_addr - check whether the peer is authorized to use
hendrikvincent 0:05ccbd4f84f1 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
hendrikvincent 0:05ccbd4f84f1 1175 */
hendrikvincent 0:05ccbd4f84f1 1176 int
hendrikvincent 0:05ccbd4f84f1 1177 auth_ip_addr(int unit, u32_t addr)
hendrikvincent 0:05ccbd4f84f1 1178 {
hendrikvincent 0:05ccbd4f84f1 1179 return ip_addr_check(addr, addresses[unit]);
hendrikvincent 0:05ccbd4f84f1 1180 }
hendrikvincent 0:05ccbd4f84f1 1181
hendrikvincent 0:05ccbd4f84f1 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
hendrikvincent 0:05ccbd4f84f1 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
hendrikvincent 0:05ccbd4f84f1 1184 {
hendrikvincent 0:05ccbd4f84f1 1185 /* don't allow loopback or multicast address */
hendrikvincent 0:05ccbd4f84f1 1186 if (bad_ip_adrs(addr)) {
hendrikvincent 0:05ccbd4f84f1 1187 return 0;
hendrikvincent 0:05ccbd4f84f1 1188 }
hendrikvincent 0:05ccbd4f84f1 1189
hendrikvincent 0:05ccbd4f84f1 1190 if (addrs == NULL) {
hendrikvincent 0:05ccbd4f84f1 1191 return !ppp_settings.auth_required; /* no addresses authorized */
hendrikvincent 0:05ccbd4f84f1 1192 }
hendrikvincent 0:05ccbd4f84f1 1193
hendrikvincent 0:05ccbd4f84f1 1194 /* XXX All other addresses allowed. */
hendrikvincent 0:05ccbd4f84f1 1195 return 1;
hendrikvincent 0:05ccbd4f84f1 1196 }
hendrikvincent 0:05ccbd4f84f1 1197
hendrikvincent 0:05ccbd4f84f1 1198 /*
hendrikvincent 0:05ccbd4f84f1 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
hendrikvincent 0:05ccbd4f84f1 1200 * to use, such as an address in the loopback net or a multicast address.
hendrikvincent 0:05ccbd4f84f1 1201 * addr is in network byte order.
hendrikvincent 0:05ccbd4f84f1 1202 */
hendrikvincent 0:05ccbd4f84f1 1203 int
hendrikvincent 0:05ccbd4f84f1 1204 bad_ip_adrs(u32_t addr)
hendrikvincent 0:05ccbd4f84f1 1205 {
hendrikvincent 0:05ccbd4f84f1 1206 addr = ntohl(addr);
hendrikvincent 0:05ccbd4f84f1 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
hendrikvincent 0:05ccbd4f84f1 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
hendrikvincent 0:05ccbd4f84f1 1209 }
hendrikvincent 0:05ccbd4f84f1 1210
hendrikvincent 0:05ccbd4f84f1 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 1212 /*
hendrikvincent 0:05ccbd4f84f1 1213 * some_ip_ok - check a wordlist to see if it authorizes any
hendrikvincent 0:05ccbd4f84f1 1214 * IP address(es).
hendrikvincent 0:05ccbd4f84f1 1215 */
hendrikvincent 0:05ccbd4f84f1 1216 static int
hendrikvincent 0:05ccbd4f84f1 1217 some_ip_ok(struct wordlist *addrs)
hendrikvincent 0:05ccbd4f84f1 1218 {
hendrikvincent 0:05ccbd4f84f1 1219 for (; addrs != 0; addrs = addrs->next) {
hendrikvincent 0:05ccbd4f84f1 1220 if (addrs->word[0] == '-')
hendrikvincent 0:05ccbd4f84f1 1221 break;
hendrikvincent 0:05ccbd4f84f1 1222 if (addrs->word[0] != '!')
hendrikvincent 0:05ccbd4f84f1 1223 return 1; /* some IP address is allowed */
hendrikvincent 0:05ccbd4f84f1 1224 }
hendrikvincent 0:05ccbd4f84f1 1225 return 0;
hendrikvincent 0:05ccbd4f84f1 1226 }
hendrikvincent 0:05ccbd4f84f1 1227
hendrikvincent 0:05ccbd4f84f1 1228 /*
hendrikvincent 0:05ccbd4f84f1 1229 * check_access - complain if a secret file has too-liberal permissions.
hendrikvincent 0:05ccbd4f84f1 1230 */
hendrikvincent 0:05ccbd4f84f1 1231 static void
hendrikvincent 0:05ccbd4f84f1 1232 check_access(FILE *f, char *filename)
hendrikvincent 0:05ccbd4f84f1 1233 {
hendrikvincent 0:05ccbd4f84f1 1234 struct stat sbuf;
hendrikvincent 0:05ccbd4f84f1 1235
hendrikvincent 0:05ccbd4f84f1 1236 if (fstat(fileno(f), &sbuf) < 0) {
hendrikvincent 0:05ccbd4f84f1 1237 warn("cannot stat secret file %s: %m", filename);
hendrikvincent 0:05ccbd4f84f1 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
hendrikvincent 0:05ccbd4f84f1 1239 warn("Warning - secret file %s has world and/or group access",
hendrikvincent 0:05ccbd4f84f1 1240 filename);
hendrikvincent 0:05ccbd4f84f1 1241 }
hendrikvincent 0:05ccbd4f84f1 1242 }
hendrikvincent 0:05ccbd4f84f1 1243
hendrikvincent 0:05ccbd4f84f1 1244
hendrikvincent 0:05ccbd4f84f1 1245 /*
hendrikvincent 0:05ccbd4f84f1 1246 * scan_authfile - Scan an authorization file for a secret suitable
hendrikvincent 0:05ccbd4f84f1 1247 * for authenticating `client' on `server'. The return value is -1
hendrikvincent 0:05ccbd4f84f1 1248 * if no secret is found, otherwise >= 0. The return value has
hendrikvincent 0:05ccbd4f84f1 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
hendrikvincent 0:05ccbd4f84f1 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
hendrikvincent 0:05ccbd4f84f1 1251 * Any following words on the line up to a "--" (i.e. address authorization
hendrikvincent 0:05ccbd4f84f1 1252 * info) are placed in a wordlist and returned in *addrs. Any
hendrikvincent 0:05ccbd4f84f1 1253 * following words (extra options) are placed in a wordlist and
hendrikvincent 0:05ccbd4f84f1 1254 * returned in *opts.
hendrikvincent 0:05ccbd4f84f1 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
hendrikvincent 0:05ccbd4f84f1 1256 */
hendrikvincent 0:05ccbd4f84f1 1257 static int
hendrikvincent 0:05ccbd4f84f1 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
hendrikvincent 0:05ccbd4f84f1 1259 {
hendrikvincent 0:05ccbd4f84f1 1260 /* We do not (currently) need this in lwip */
hendrikvincent 0:05ccbd4f84f1 1261 return 0; /* dummy */
hendrikvincent 0:05ccbd4f84f1 1262 }
hendrikvincent 0:05ccbd4f84f1 1263 /*
hendrikvincent 0:05ccbd4f84f1 1264 * free_wordlist - release memory allocated for a wordlist.
hendrikvincent 0:05ccbd4f84f1 1265 */
hendrikvincent 0:05ccbd4f84f1 1266 static void
hendrikvincent 0:05ccbd4f84f1 1267 free_wordlist(struct wordlist *wp)
hendrikvincent 0:05ccbd4f84f1 1268 {
hendrikvincent 0:05ccbd4f84f1 1269 struct wordlist *next;
hendrikvincent 0:05ccbd4f84f1 1270
hendrikvincent 0:05ccbd4f84f1 1271 while (wp != NULL) {
hendrikvincent 0:05ccbd4f84f1 1272 next = wp->next;
hendrikvincent 0:05ccbd4f84f1 1273 free(wp);
hendrikvincent 0:05ccbd4f84f1 1274 wp = next;
hendrikvincent 0:05ccbd4f84f1 1275 }
hendrikvincent 0:05ccbd4f84f1 1276 }
hendrikvincent 0:05ccbd4f84f1 1277
hendrikvincent 0:05ccbd4f84f1 1278 /*
hendrikvincent 0:05ccbd4f84f1 1279 * auth_script_done - called when the auth-up or auth-down script
hendrikvincent 0:05ccbd4f84f1 1280 * has finished.
hendrikvincent 0:05ccbd4f84f1 1281 */
hendrikvincent 0:05ccbd4f84f1 1282 static void
hendrikvincent 0:05ccbd4f84f1 1283 auth_script_done(void *arg)
hendrikvincent 0:05ccbd4f84f1 1284 {
hendrikvincent 0:05ccbd4f84f1 1285 auth_script_pid = 0;
hendrikvincent 0:05ccbd4f84f1 1286 switch (auth_script_state) {
hendrikvincent 0:05ccbd4f84f1 1287 case s_up:
hendrikvincent 0:05ccbd4f84f1 1288 if (auth_state == s_down) {
hendrikvincent 0:05ccbd4f84f1 1289 auth_script_state = s_down;
hendrikvincent 0:05ccbd4f84f1 1290 auth_script(_PATH_AUTHDOWN);
hendrikvincent 0:05ccbd4f84f1 1291 }
hendrikvincent 0:05ccbd4f84f1 1292 break;
hendrikvincent 0:05ccbd4f84f1 1293 case s_down:
hendrikvincent 0:05ccbd4f84f1 1294 if (auth_state == s_up) {
hendrikvincent 0:05ccbd4f84f1 1295 auth_script_state = s_up;
hendrikvincent 0:05ccbd4f84f1 1296 auth_script(_PATH_AUTHUP);
hendrikvincent 0:05ccbd4f84f1 1297 }
hendrikvincent 0:05ccbd4f84f1 1298 break;
hendrikvincent 0:05ccbd4f84f1 1299 }
hendrikvincent 0:05ccbd4f84f1 1300 }
hendrikvincent 0:05ccbd4f84f1 1301
hendrikvincent 0:05ccbd4f84f1 1302 /*
hendrikvincent 0:05ccbd4f84f1 1303 * auth_script - execute a script with arguments
hendrikvincent 0:05ccbd4f84f1 1304 * interface-name peer-name real-user tty speed
hendrikvincent 0:05ccbd4f84f1 1305 */
hendrikvincent 0:05ccbd4f84f1 1306 static void
hendrikvincent 0:05ccbd4f84f1 1307 auth_script(char *script)
hendrikvincent 0:05ccbd4f84f1 1308 {
hendrikvincent 0:05ccbd4f84f1 1309 char strspeed[32];
hendrikvincent 0:05ccbd4f84f1 1310 struct passwd *pw;
hendrikvincent 0:05ccbd4f84f1 1311 char struid[32];
hendrikvincent 0:05ccbd4f84f1 1312 char *user_name;
hendrikvincent 0:05ccbd4f84f1 1313 char *argv[8];
hendrikvincent 0:05ccbd4f84f1 1314
hendrikvincent 0:05ccbd4f84f1 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
hendrikvincent 0:05ccbd4f84f1 1316 user_name = pw->pw_name;
hendrikvincent 0:05ccbd4f84f1 1317 else {
hendrikvincent 0:05ccbd4f84f1 1318 slprintf(struid, sizeof(struid), "%d", getuid());
hendrikvincent 0:05ccbd4f84f1 1319 user_name = struid;
hendrikvincent 0:05ccbd4f84f1 1320 }
hendrikvincent 0:05ccbd4f84f1 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
hendrikvincent 0:05ccbd4f84f1 1322
hendrikvincent 0:05ccbd4f84f1 1323 argv[0] = script;
hendrikvincent 0:05ccbd4f84f1 1324 argv[1] = ifname;
hendrikvincent 0:05ccbd4f84f1 1325 argv[2] = peer_authname;
hendrikvincent 0:05ccbd4f84f1 1326 argv[3] = user_name;
hendrikvincent 0:05ccbd4f84f1 1327 argv[4] = devnam;
hendrikvincent 0:05ccbd4f84f1 1328 argv[5] = strspeed;
hendrikvincent 0:05ccbd4f84f1 1329 argv[6] = NULL;
hendrikvincent 0:05ccbd4f84f1 1330
hendrikvincent 0:05ccbd4f84f1 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
hendrikvincent 0:05ccbd4f84f1 1332 }
hendrikvincent 0:05ccbd4f84f1 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 1334 #endif /* PPP_SUPPORT */