Sam Walsh / F7_Ethernet_F746ZG

Forked from the DieterGraef Library

Fork of F7_Ethernet by Dieter Graef

lwip/netif/ppp/auth.c@2:fdef48f830c0, 2016-11-18 (annotated)

Committer:
EmbeddedSam
Date:
Fri Nov 18 12:48:10 2016 +0000
Revision:
2:fdef48f830c0
Parent:
0:d26c1b55cfca 
Linking MQTT together, starting with mbed-cli

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:d26c1b55cfca 1 /*****************************************************************************
DieterGraef 0:d26c1b55cfca 2 * auth.c - Network Authentication and Phase Control program file.
DieterGraef 0:d26c1b55cfca 3 *
DieterGraef 0:d26c1b55cfca 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
DieterGraef 0:d26c1b55cfca 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
DieterGraef 0:d26c1b55cfca 6 *
DieterGraef 0:d26c1b55cfca 7 * The authors hereby grant permission to use, copy, modify, distribute,
DieterGraef 0:d26c1b55cfca 8 * and license this software and its documentation for any purpose, provided
DieterGraef 0:d26c1b55cfca 9 * that existing copyright notices are retained in all copies and that this
DieterGraef 0:d26c1b55cfca 10 * notice and the following disclaimer are included verbatim in any
DieterGraef 0:d26c1b55cfca 11 * distributions. No written agreement, license, or royalty fee is required
DieterGraef 0:d26c1b55cfca 12 * for any of the authorized uses.
DieterGraef 0:d26c1b55cfca 13 *
DieterGraef 0:d26c1b55cfca 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
DieterGraef 0:d26c1b55cfca 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
DieterGraef 0:d26c1b55cfca 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
DieterGraef 0:d26c1b55cfca 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
DieterGraef 0:d26c1b55cfca 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
DieterGraef 0:d26c1b55cfca 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DieterGraef 0:d26c1b55cfca 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
DieterGraef 0:d26c1b55cfca 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
DieterGraef 0:d26c1b55cfca 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
DieterGraef 0:d26c1b55cfca 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
DieterGraef 0:d26c1b55cfca 24 *
DieterGraef 0:d26c1b55cfca 25 ******************************************************************************
DieterGraef 0:d26c1b55cfca 26 * REVISION HISTORY
DieterGraef 0:d26c1b55cfca 27 *
DieterGraef 0:d26c1b55cfca 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
DieterGraef 0:d26c1b55cfca 29 * Ported to lwIP.
DieterGraef 0:d26c1b55cfca 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
DieterGraef 0:d26c1b55cfca 31 * Ported from public pppd code.
DieterGraef 0:d26c1b55cfca 32 *****************************************************************************/
DieterGraef 0:d26c1b55cfca 33 /*
DieterGraef 0:d26c1b55cfca 34 * auth.c - PPP authentication and phase control.
DieterGraef 0:d26c1b55cfca 35 *
DieterGraef 0:d26c1b55cfca 36 * Copyright (c) 1993 The Australian National University.
DieterGraef 0:d26c1b55cfca 37 * All rights reserved.
DieterGraef 0:d26c1b55cfca 38 *
DieterGraef 0:d26c1b55cfca 39 * Redistribution and use in source and binary forms are permitted
DieterGraef 0:d26c1b55cfca 40 * provided that the above copyright notice and this paragraph are
DieterGraef 0:d26c1b55cfca 41 * duplicated in all such forms and that any documentation,
DieterGraef 0:d26c1b55cfca 42 * advertising materials, and other materials related to such
DieterGraef 0:d26c1b55cfca 43 * distribution and use acknowledge that the software was developed
DieterGraef 0:d26c1b55cfca 44 * by the Australian National University. The name of the University
DieterGraef 0:d26c1b55cfca 45 * may not be used to endorse or promote products derived from this
DieterGraef 0:d26c1b55cfca 46 * software without specific prior written permission.
DieterGraef 0:d26c1b55cfca 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
DieterGraef 0:d26c1b55cfca 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
DieterGraef 0:d26c1b55cfca 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
DieterGraef 0:d26c1b55cfca 50 *
DieterGraef 0:d26c1b55cfca 51 * Copyright (c) 1989 Carnegie Mellon University.
DieterGraef 0:d26c1b55cfca 52 * All rights reserved.
DieterGraef 0:d26c1b55cfca 53 *
DieterGraef 0:d26c1b55cfca 54 * Redistribution and use in source and binary forms are permitted
DieterGraef 0:d26c1b55cfca 55 * provided that the above copyright notice and this paragraph are
DieterGraef 0:d26c1b55cfca 56 * duplicated in all such forms and that any documentation,
DieterGraef 0:d26c1b55cfca 57 * advertising materials, and other materials related to such
DieterGraef 0:d26c1b55cfca 58 * distribution and use acknowledge that the software was developed
DieterGraef 0:d26c1b55cfca 59 * by Carnegie Mellon University. The name of the
DieterGraef 0:d26c1b55cfca 60 * University may not be used to endorse or promote products derived
DieterGraef 0:d26c1b55cfca 61 * from this software without specific prior written permission.
DieterGraef 0:d26c1b55cfca 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
DieterGraef 0:d26c1b55cfca 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
DieterGraef 0:d26c1b55cfca 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
DieterGraef 0:d26c1b55cfca 65 */
DieterGraef 0:d26c1b55cfca 66
DieterGraef 0:d26c1b55cfca 67 #include "lwip/opt.h"
DieterGraef 0:d26c1b55cfca 68
DieterGraef 0:d26c1b55cfca 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
DieterGraef 0:d26c1b55cfca 70
DieterGraef 0:d26c1b55cfca 71 #include "ppp_impl.h"
DieterGraef 0:d26c1b55cfca 72 #include "pppdebug.h"
DieterGraef 0:d26c1b55cfca 73
DieterGraef 0:d26c1b55cfca 74 #include "fsm.h"
DieterGraef 0:d26c1b55cfca 75 #include "lcp.h"
DieterGraef 0:d26c1b55cfca 76 #include "pap.h"
DieterGraef 0:d26c1b55cfca 77 #include "chap.h"
DieterGraef 0:d26c1b55cfca 78 #include "auth.h"
DieterGraef 0:d26c1b55cfca 79 #include "ipcp.h"
DieterGraef 0:d26c1b55cfca 80
DieterGraef 0:d26c1b55cfca 81 #if CBCP_SUPPORT
DieterGraef 0:d26c1b55cfca 82 #include "cbcp.h"
DieterGraef 0:d26c1b55cfca 83 #endif /* CBCP_SUPPORT */
DieterGraef 0:d26c1b55cfca 84
DieterGraef 0:d26c1b55cfca 85 #include "lwip/inet.h"
DieterGraef 0:d26c1b55cfca 86
DieterGraef 0:d26c1b55cfca 87 #include <string.h>
DieterGraef 0:d26c1b55cfca 88
DieterGraef 0:d26c1b55cfca 89 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 90 /* Bits in scan_authfile return value */
DieterGraef 0:d26c1b55cfca 91 #define NONWILD_SERVER 1
DieterGraef 0:d26c1b55cfca 92 #define NONWILD_CLIENT 2
DieterGraef 0:d26c1b55cfca 93
DieterGraef 0:d26c1b55cfca 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
DieterGraef 0:d26c1b55cfca 95 #endif /* UNUSED */
DieterGraef 0:d26c1b55cfca 96
DieterGraef 0:d26c1b55cfca 97 #if PAP_SUPPORT || CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 98 /* The name by which the peer authenticated itself to us. */
DieterGraef 0:d26c1b55cfca 99 static char peer_authname[MAXNAMELEN];
DieterGraef 0:d26c1b55cfca 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 101
DieterGraef 0:d26c1b55cfca 102 /* Records which authentication operations haven't completed yet. */
DieterGraef 0:d26c1b55cfca 103 static int auth_pending[NUM_PPP];
DieterGraef 0:d26c1b55cfca 104
DieterGraef 0:d26c1b55cfca 105 /* Set if we have successfully called plogin() */
DieterGraef 0:d26c1b55cfca 106 static int logged_in;
DieterGraef 0:d26c1b55cfca 107
DieterGraef 0:d26c1b55cfca 108 /* Set if we have run the /etc/ppp/auth-up script. */
DieterGraef 0:d26c1b55cfca 109 static int did_authup; /* @todo, we don't need this in lwip*/
DieterGraef 0:d26c1b55cfca 110
DieterGraef 0:d26c1b55cfca 111 /* List of addresses which the peer may use. */
DieterGraef 0:d26c1b55cfca 112 static struct wordlist *addresses[NUM_PPP];
DieterGraef 0:d26c1b55cfca 113
DieterGraef 0:d26c1b55cfca 114 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 115 /* Wordlist giving addresses which the peer may use
DieterGraef 0:d26c1b55cfca 116 without authenticating itself. */
DieterGraef 0:d26c1b55cfca 117 static struct wordlist *noauth_addrs;
DieterGraef 0:d26c1b55cfca 118
DieterGraef 0:d26c1b55cfca 119 /* Extra options to apply, from the secrets file entry for the peer. */
DieterGraef 0:d26c1b55cfca 120 static struct wordlist *extra_options;
DieterGraef 0:d26c1b55cfca 121 #endif /* UNUSED */
DieterGraef 0:d26c1b55cfca 122
DieterGraef 0:d26c1b55cfca 123 /* Number of network protocols which we have opened. */
DieterGraef 0:d26c1b55cfca 124 static int num_np_open;
DieterGraef 0:d26c1b55cfca 125
DieterGraef 0:d26c1b55cfca 126 /* Number of network protocols which have come up. */
DieterGraef 0:d26c1b55cfca 127 static int num_np_up;
DieterGraef 0:d26c1b55cfca 128
DieterGraef 0:d26c1b55cfca 129 #if PAP_SUPPORT || CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
DieterGraef 0:d26c1b55cfca 131 static int passwd_from_file;
DieterGraef 0:d26c1b55cfca 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 133
DieterGraef 0:d26c1b55cfca 134 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 135 /* Set if we require authentication only because we have a default route. */
DieterGraef 0:d26c1b55cfca 136 static bool default_auth;
DieterGraef 0:d26c1b55cfca 137
DieterGraef 0:d26c1b55cfca 138 /* Hook to enable a plugin to control the idle time limit */
DieterGraef 0:d26c1b55cfca 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
DieterGraef 0:d26c1b55cfca 140
DieterGraef 0:d26c1b55cfca 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
DieterGraef 0:d26c1b55cfca 142 int (*pap_check_hook) __P((void)) = NULL;
DieterGraef 0:d26c1b55cfca 143
DieterGraef 0:d26c1b55cfca 144 /* Hook for a plugin to check the PAP user and password */
DieterGraef 0:d26c1b55cfca 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
DieterGraef 0:d26c1b55cfca 146 struct wordlist **paddrs,
DieterGraef 0:d26c1b55cfca 147 struct wordlist **popts)) = NULL;
DieterGraef 0:d26c1b55cfca 148
DieterGraef 0:d26c1b55cfca 149 /* Hook for a plugin to know about the PAP user logout */
DieterGraef 0:d26c1b55cfca 150 void (*pap_logout_hook) __P((void)) = NULL;
DieterGraef 0:d26c1b55cfca 151
DieterGraef 0:d26c1b55cfca 152 /* Hook for a plugin to get the PAP password for authenticating us */
DieterGraef 0:d26c1b55cfca 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
DieterGraef 0:d26c1b55cfca 154
DieterGraef 0:d26c1b55cfca 155 /*
DieterGraef 0:d26c1b55cfca 156 * This is used to ensure that we don't start an auth-up/down
DieterGraef 0:d26c1b55cfca 157 * script while one is already running.
DieterGraef 0:d26c1b55cfca 158 */
DieterGraef 0:d26c1b55cfca 159 enum script_state {
DieterGraef 0:d26c1b55cfca 160 s_down,
DieterGraef 0:d26c1b55cfca 161 s_up
DieterGraef 0:d26c1b55cfca 162 };
DieterGraef 0:d26c1b55cfca 163
DieterGraef 0:d26c1b55cfca 164 static enum script_state auth_state = s_down;
DieterGraef 0:d26c1b55cfca 165 static enum script_state auth_script_state = s_down;
DieterGraef 0:d26c1b55cfca 166 static pid_t auth_script_pid = 0;
DieterGraef 0:d26c1b55cfca 167
DieterGraef 0:d26c1b55cfca 168 /*
DieterGraef 0:d26c1b55cfca 169 * Option variables.
DieterGraef 0:d26c1b55cfca 170 * lwip: some of these are present in the ppp_settings structure
DieterGraef 0:d26c1b55cfca 171 */
DieterGraef 0:d26c1b55cfca 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
DieterGraef 0:d26c1b55cfca 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
DieterGraef 0:d26c1b55cfca 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
DieterGraef 0:d26c1b55cfca 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
DieterGraef 0:d26c1b55cfca 176 bool usehostname = 0; /* Use hostname for our_name */
DieterGraef 0:d26c1b55cfca 177 bool auth_required = 0; /* Always require authentication from peer */
DieterGraef 0:d26c1b55cfca 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
DieterGraef 0:d26c1b55cfca 179 bool explicit_remote = 0; /* User specified explicit remote name */
DieterGraef 0:d26c1b55cfca 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
DieterGraef 0:d26c1b55cfca 181
DieterGraef 0:d26c1b55cfca 182 #endif /* UNUSED */
DieterGraef 0:d26c1b55cfca 183
DieterGraef 0:d26c1b55cfca 184 /* Bits in auth_pending[] */
DieterGraef 0:d26c1b55cfca 185 #define PAP_WITHPEER 1
DieterGraef 0:d26c1b55cfca 186 #define PAP_PEER 2
DieterGraef 0:d26c1b55cfca 187 #define CHAP_WITHPEER 4
DieterGraef 0:d26c1b55cfca 188 #define CHAP_PEER 8
DieterGraef 0:d26c1b55cfca 189
DieterGraef 0:d26c1b55cfca 190 /* @todo, move this somewhere */
DieterGraef 0:d26c1b55cfca 191 /* Used for storing a sequence of words. Usually malloced. */
DieterGraef 0:d26c1b55cfca 192 struct wordlist {
DieterGraef 0:d26c1b55cfca 193 struct wordlist *next;
DieterGraef 0:d26c1b55cfca 194 char word[1];
DieterGraef 0:d26c1b55cfca 195 };
DieterGraef 0:d26c1b55cfca 196
DieterGraef 0:d26c1b55cfca 197
DieterGraef 0:d26c1b55cfca 198 extern char *crypt (const char *, const char *);
DieterGraef 0:d26c1b55cfca 199
DieterGraef 0:d26c1b55cfca 200 /* Prototypes for procedures local to this file. */
DieterGraef 0:d26c1b55cfca 201
DieterGraef 0:d26c1b55cfca 202 static void network_phase (int);
DieterGraef 0:d26c1b55cfca 203 static void check_idle (void *);
DieterGraef 0:d26c1b55cfca 204 static void connect_time_expired (void *);
DieterGraef 0:d26c1b55cfca 205 #if 0
DieterGraef 0:d26c1b55cfca 206 static int plogin (char *, char *, char **, int *);
DieterGraef 0:d26c1b55cfca 207 #endif
DieterGraef 0:d26c1b55cfca 208 static void plogout (void);
DieterGraef 0:d26c1b55cfca 209 static int null_login (int);
DieterGraef 0:d26c1b55cfca 210 static int get_pap_passwd (int, char *, char *);
DieterGraef 0:d26c1b55cfca 211 static int have_pap_secret (void);
DieterGraef 0:d26c1b55cfca 212 static int have_chap_secret (char *, char *, u32_t);
DieterGraef 0:d26c1b55cfca 213 static int ip_addr_check (u32_t, struct wordlist *);
DieterGraef 0:d26c1b55cfca 214
DieterGraef 0:d26c1b55cfca 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 216 static int scan_authfile (FILE *, char *, char *, char *,
DieterGraef 0:d26c1b55cfca 217 struct wordlist **, struct wordlist **,
DieterGraef 0:d26c1b55cfca 218 char *);
DieterGraef 0:d26c1b55cfca 219 static void free_wordlist (struct wordlist *);
DieterGraef 0:d26c1b55cfca 220 static void auth_script (char *);
DieterGraef 0:d26c1b55cfca 221 static void auth_script_done (void *);
DieterGraef 0:d26c1b55cfca 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
DieterGraef 0:d26c1b55cfca 223 static int some_ip_ok (struct wordlist *);
DieterGraef 0:d26c1b55cfca 224 static int setupapfile (char **);
DieterGraef 0:d26c1b55cfca 225 static int privgroup (char **);
DieterGraef 0:d26c1b55cfca 226 static int set_noauth_addr (char **);
DieterGraef 0:d26c1b55cfca 227 static void check_access (FILE *, char *);
DieterGraef 0:d26c1b55cfca 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 229
DieterGraef 0:d26c1b55cfca 230 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 231 /*
DieterGraef 0:d26c1b55cfca 232 * Authentication-related options.
DieterGraef 0:d26c1b55cfca 233 */
DieterGraef 0:d26c1b55cfca 234 option_t auth_options[] = {
DieterGraef 0:d26c1b55cfca 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
DieterGraef 0:d26c1b55cfca 236 "Require PAP authentication from peer", 1, &auth_required },
DieterGraef 0:d26c1b55cfca 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
DieterGraef 0:d26c1b55cfca 238 "Require PAP authentication from peer", 1, &auth_required },
DieterGraef 0:d26c1b55cfca 239 { "refuse-pap", o_bool, &refuse_pap,
DieterGraef 0:d26c1b55cfca 240 "Don't agree to auth to peer with PAP", 1 },
DieterGraef 0:d26c1b55cfca 241 { "-pap", o_bool, &refuse_pap,
DieterGraef 0:d26c1b55cfca 242 "Don't allow PAP authentication with peer", 1 },
DieterGraef 0:d26c1b55cfca 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
DieterGraef 0:d26c1b55cfca 244 "Require CHAP authentication from peer", 1, &auth_required },
DieterGraef 0:d26c1b55cfca 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
DieterGraef 0:d26c1b55cfca 246 "Require CHAP authentication from peer", 1, &auth_required },
DieterGraef 0:d26c1b55cfca 247 { "refuse-chap", o_bool, &refuse_chap,
DieterGraef 0:d26c1b55cfca 248 "Don't agree to auth to peer with CHAP", 1 },
DieterGraef 0:d26c1b55cfca 249 { "-chap", o_bool, &refuse_chap,
DieterGraef 0:d26c1b55cfca 250 "Don't allow CHAP authentication with peer", 1 },
DieterGraef 0:d26c1b55cfca 251 { "name", o_string, our_name,
DieterGraef 0:d26c1b55cfca 252 "Set local name for authentication",
DieterGraef 0:d26c1b55cfca 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
DieterGraef 0:d26c1b55cfca 254 { "user", o_string, user,
DieterGraef 0:d26c1b55cfca 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
DieterGraef 0:d26c1b55cfca 256 { "usehostname", o_bool, &usehostname,
DieterGraef 0:d26c1b55cfca 257 "Must use hostname for authentication", 1 },
DieterGraef 0:d26c1b55cfca 258 { "remotename", o_string, remote_name,
DieterGraef 0:d26c1b55cfca 259 "Set remote name for authentication", OPT_STATIC,
DieterGraef 0:d26c1b55cfca 260 &explicit_remote, MAXNAMELEN },
DieterGraef 0:d26c1b55cfca 261 { "auth", o_bool, &auth_required,
DieterGraef 0:d26c1b55cfca 262 "Require authentication from peer", 1 },
DieterGraef 0:d26c1b55cfca 263 { "noauth", o_bool, &auth_required,
DieterGraef 0:d26c1b55cfca 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
DieterGraef 0:d26c1b55cfca 265 { "login", o_bool, &uselogin,
DieterGraef 0:d26c1b55cfca 266 "Use system password database for PAP", 1 },
DieterGraef 0:d26c1b55cfca 267 { "papcrypt", o_bool, &cryptpap,
DieterGraef 0:d26c1b55cfca 268 "PAP passwords are encrypted", 1 },
DieterGraef 0:d26c1b55cfca 269 { "+ua", o_special, (void *)setupapfile,
DieterGraef 0:d26c1b55cfca 270 "Get PAP user and password from file" },
DieterGraef 0:d26c1b55cfca 271 { "password", o_string, passwd,
DieterGraef 0:d26c1b55cfca 272 "Password for authenticating us to the peer", OPT_STATIC,
DieterGraef 0:d26c1b55cfca 273 NULL, MAXSECRETLEN },
DieterGraef 0:d26c1b55cfca 274 { "privgroup", o_special, (void *)privgroup,
DieterGraef 0:d26c1b55cfca 275 "Allow group members to use privileged options", OPT_PRIV },
DieterGraef 0:d26c1b55cfca 276 { "allow-ip", o_special, (void *)set_noauth_addr,
DieterGraef 0:d26c1b55cfca 277 "Set IP address(es) which can be used without authentication",
DieterGraef 0:d26c1b55cfca 278 OPT_PRIV },
DieterGraef 0:d26c1b55cfca 279 { NULL }
DieterGraef 0:d26c1b55cfca 280 };
DieterGraef 0:d26c1b55cfca 281 #endif /* UNUSED */
DieterGraef 0:d26c1b55cfca 282 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 283 /*
DieterGraef 0:d26c1b55cfca 284 * setupapfile - specifies UPAP info for authenticating with peer.
DieterGraef 0:d26c1b55cfca 285 */
DieterGraef 0:d26c1b55cfca 286 static int
DieterGraef 0:d26c1b55cfca 287 setupapfile(char **argv)
DieterGraef 0:d26c1b55cfca 288 {
DieterGraef 0:d26c1b55cfca 289 FILE * ufile;
DieterGraef 0:d26c1b55cfca 290 int l;
DieterGraef 0:d26c1b55cfca 291
DieterGraef 0:d26c1b55cfca 292 lcp_allowoptions[0].neg_upap = 1;
DieterGraef 0:d26c1b55cfca 293
DieterGraef 0:d26c1b55cfca 294 /* open user info file */
DieterGraef 0:d26c1b55cfca 295 seteuid(getuid());
DieterGraef 0:d26c1b55cfca 296 ufile = fopen(*argv, "r");
DieterGraef 0:d26c1b55cfca 297 seteuid(0);
DieterGraef 0:d26c1b55cfca 298 if (ufile == NULL) {
DieterGraef 0:d26c1b55cfca 299 option_error("unable to open user login data file %s", *argv);
DieterGraef 0:d26c1b55cfca 300 return 0;
DieterGraef 0:d26c1b55cfca 301 }
DieterGraef 0:d26c1b55cfca 302 check_access(ufile, *argv);
DieterGraef 0:d26c1b55cfca 303
DieterGraef 0:d26c1b55cfca 304 /* get username */
DieterGraef 0:d26c1b55cfca 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
DieterGraef 0:d26c1b55cfca 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
DieterGraef 0:d26c1b55cfca 307 option_error("unable to read user login data file %s", *argv);
DieterGraef 0:d26c1b55cfca 308 return 0;
DieterGraef 0:d26c1b55cfca 309 }
DieterGraef 0:d26c1b55cfca 310 fclose(ufile);
DieterGraef 0:d26c1b55cfca 311
DieterGraef 0:d26c1b55cfca 312 /* get rid of newlines */
DieterGraef 0:d26c1b55cfca 313 l = strlen(user);
DieterGraef 0:d26c1b55cfca 314 if (l > 0 && user[l-1] == '\n')
DieterGraef 0:d26c1b55cfca 315 user[l-1] = 0;
DieterGraef 0:d26c1b55cfca 316 l = strlen(passwd);
DieterGraef 0:d26c1b55cfca 317 if (l > 0 && passwd[l-1] == '\n')
DieterGraef 0:d26c1b55cfca 318 passwd[l-1] = 0;
DieterGraef 0:d26c1b55cfca 319
DieterGraef 0:d26c1b55cfca 320 return (1);
DieterGraef 0:d26c1b55cfca 321 }
DieterGraef 0:d26c1b55cfca 322 #endif /* UNUSED */
DieterGraef 0:d26c1b55cfca 323
DieterGraef 0:d26c1b55cfca 324 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 325 /*
DieterGraef 0:d26c1b55cfca 326 * privgroup - allow members of the group to have privileged access.
DieterGraef 0:d26c1b55cfca 327 */
DieterGraef 0:d26c1b55cfca 328 static int
DieterGraef 0:d26c1b55cfca 329 privgroup(char **argv)
DieterGraef 0:d26c1b55cfca 330 {
DieterGraef 0:d26c1b55cfca 331 struct group *g;
DieterGraef 0:d26c1b55cfca 332 int i;
DieterGraef 0:d26c1b55cfca 333
DieterGraef 0:d26c1b55cfca 334 g = getgrnam(*argv);
DieterGraef 0:d26c1b55cfca 335 if (g == 0) {
DieterGraef 0:d26c1b55cfca 336 option_error("group %s is unknown", *argv);
DieterGraef 0:d26c1b55cfca 337 return 0;
DieterGraef 0:d26c1b55cfca 338 }
DieterGraef 0:d26c1b55cfca 339 for (i = 0; i < ngroups; ++i) {
DieterGraef 0:d26c1b55cfca 340 if (groups[i] == g->gr_gid) {
DieterGraef 0:d26c1b55cfca 341 privileged = 1;
DieterGraef 0:d26c1b55cfca 342 break;
DieterGraef 0:d26c1b55cfca 343 }
DieterGraef 0:d26c1b55cfca 344 }
DieterGraef 0:d26c1b55cfca 345 return 1;
DieterGraef 0:d26c1b55cfca 346 }
DieterGraef 0:d26c1b55cfca 347 #endif
DieterGraef 0:d26c1b55cfca 348
DieterGraef 0:d26c1b55cfca 349 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 350 /*
DieterGraef 0:d26c1b55cfca 351 * set_noauth_addr - set address(es) that can be used without authentication.
DieterGraef 0:d26c1b55cfca 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
DieterGraef 0:d26c1b55cfca 353 */
DieterGraef 0:d26c1b55cfca 354 static int
DieterGraef 0:d26c1b55cfca 355 set_noauth_addr(char **argv)
DieterGraef 0:d26c1b55cfca 356 {
DieterGraef 0:d26c1b55cfca 357 char *addr = *argv;
DieterGraef 0:d26c1b55cfca 358 int l = strlen(addr);
DieterGraef 0:d26c1b55cfca 359 struct wordlist *wp;
DieterGraef 0:d26c1b55cfca 360
DieterGraef 0:d26c1b55cfca 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
DieterGraef 0:d26c1b55cfca 362 if (wp == NULL)
DieterGraef 0:d26c1b55cfca 363 novm("allow-ip argument");
DieterGraef 0:d26c1b55cfca 364 wp->word = (char *) (wp + 1);
DieterGraef 0:d26c1b55cfca 365 wp->next = noauth_addrs;
DieterGraef 0:d26c1b55cfca 366 BCOPY(addr, wp->word, l);
DieterGraef 0:d26c1b55cfca 367 noauth_addrs = wp;
DieterGraef 0:d26c1b55cfca 368 return 1;
DieterGraef 0:d26c1b55cfca 369 }
DieterGraef 0:d26c1b55cfca 370 #endif /* UNUSED */
DieterGraef 0:d26c1b55cfca 371
DieterGraef 0:d26c1b55cfca 372 /*
DieterGraef 0:d26c1b55cfca 373 * An Open on LCP has requested a change from Dead to Establish phase.
DieterGraef 0:d26c1b55cfca 374 * Do what's necessary to bring the physical layer up.
DieterGraef 0:d26c1b55cfca 375 */
DieterGraef 0:d26c1b55cfca 376 void
DieterGraef 0:d26c1b55cfca 377 link_required(int unit)
DieterGraef 0:d26c1b55cfca 378 {
DieterGraef 0:d26c1b55cfca 379 LWIP_UNUSED_ARG(unit);
DieterGraef 0:d26c1b55cfca 380
DieterGraef 0:d26c1b55cfca 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
DieterGraef 0:d26c1b55cfca 382 }
DieterGraef 0:d26c1b55cfca 383
DieterGraef 0:d26c1b55cfca 384 /*
DieterGraef 0:d26c1b55cfca 385 * LCP has terminated the link; go to the Dead phase and take the
DieterGraef 0:d26c1b55cfca 386 * physical layer down.
DieterGraef 0:d26c1b55cfca 387 */
DieterGraef 0:d26c1b55cfca 388 void
DieterGraef 0:d26c1b55cfca 389 link_terminated(int unit)
DieterGraef 0:d26c1b55cfca 390 {
DieterGraef 0:d26c1b55cfca 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
DieterGraef 0:d26c1b55cfca 392 if (lcp_phase[unit] == PHASE_DEAD) {
DieterGraef 0:d26c1b55cfca 393 return;
DieterGraef 0:d26c1b55cfca 394 }
DieterGraef 0:d26c1b55cfca 395 if (logged_in) {
DieterGraef 0:d26c1b55cfca 396 plogout();
DieterGraef 0:d26c1b55cfca 397 }
DieterGraef 0:d26c1b55cfca 398 lcp_phase[unit] = PHASE_DEAD;
DieterGraef 0:d26c1b55cfca 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
DieterGraef 0:d26c1b55cfca 400 pppLinkTerminated(unit);
DieterGraef 0:d26c1b55cfca 401 }
DieterGraef 0:d26c1b55cfca 402
DieterGraef 0:d26c1b55cfca 403 /*
DieterGraef 0:d26c1b55cfca 404 * LCP has gone down; it will either die or try to re-establish.
DieterGraef 0:d26c1b55cfca 405 */
DieterGraef 0:d26c1b55cfca 406 void
DieterGraef 0:d26c1b55cfca 407 link_down(int unit)
DieterGraef 0:d26c1b55cfca 408 {
DieterGraef 0:d26c1b55cfca 409 int i;
DieterGraef 0:d26c1b55cfca 410 struct protent *protp;
DieterGraef 0:d26c1b55cfca 411
DieterGraef 0:d26c1b55cfca 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
DieterGraef 0:d26c1b55cfca 413
DieterGraef 0:d26c1b55cfca 414 if (did_authup) {
DieterGraef 0:d26c1b55cfca 415 /* XXX Do link down processing. */
DieterGraef 0:d26c1b55cfca 416 did_authup = 0;
DieterGraef 0:d26c1b55cfca 417 }
DieterGraef 0:d26c1b55cfca 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
DieterGraef 0:d26c1b55cfca 419 if (!protp->enabled_flag) {
DieterGraef 0:d26c1b55cfca 420 continue;
DieterGraef 0:d26c1b55cfca 421 }
DieterGraef 0:d26c1b55cfca 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
DieterGraef 0:d26c1b55cfca 423 (*protp->lowerdown)(unit);
DieterGraef 0:d26c1b55cfca 424 }
DieterGraef 0:d26c1b55cfca 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
DieterGraef 0:d26c1b55cfca 426 (*protp->close)(unit, "LCP down");
DieterGraef 0:d26c1b55cfca 427 }
DieterGraef 0:d26c1b55cfca 428 }
DieterGraef 0:d26c1b55cfca 429 num_np_open = 0; /* number of network protocols we have opened */
DieterGraef 0:d26c1b55cfca 430 num_np_up = 0; /* Number of network protocols which have come up */
DieterGraef 0:d26c1b55cfca 431
DieterGraef 0:d26c1b55cfca 432 if (lcp_phase[unit] != PHASE_DEAD) {
DieterGraef 0:d26c1b55cfca 433 lcp_phase[unit] = PHASE_TERMINATE;
DieterGraef 0:d26c1b55cfca 434 }
DieterGraef 0:d26c1b55cfca 435 pppLinkDown(unit);
DieterGraef 0:d26c1b55cfca 436 }
DieterGraef 0:d26c1b55cfca 437
DieterGraef 0:d26c1b55cfca 438 /*
DieterGraef 0:d26c1b55cfca 439 * The link is established.
DieterGraef 0:d26c1b55cfca 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
DieterGraef 0:d26c1b55cfca 441 */
DieterGraef 0:d26c1b55cfca 442 void
DieterGraef 0:d26c1b55cfca 443 link_established(int unit)
DieterGraef 0:d26c1b55cfca 444 {
DieterGraef 0:d26c1b55cfca 445 int auth;
DieterGraef 0:d26c1b55cfca 446 int i;
DieterGraef 0:d26c1b55cfca 447 struct protent *protp;
DieterGraef 0:d26c1b55cfca 448 lcp_options *wo = &lcp_wantoptions[unit];
DieterGraef 0:d26c1b55cfca 449 lcp_options *go = &lcp_gotoptions[unit];
DieterGraef 0:d26c1b55cfca 450 #if PAP_SUPPORT || CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 451 lcp_options *ho = &lcp_hisoptions[unit];
DieterGraef 0:d26c1b55cfca 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 453
DieterGraef 0:d26c1b55cfca 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
DieterGraef 0:d26c1b55cfca 455 /*
DieterGraef 0:d26c1b55cfca 456 * Tell higher-level protocols that LCP is up.
DieterGraef 0:d26c1b55cfca 457 */
DieterGraef 0:d26c1b55cfca 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
DieterGraef 0:d26c1b55cfca 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
DieterGraef 0:d26c1b55cfca 460 (*protp->lowerup)(unit);
DieterGraef 0:d26c1b55cfca 461 }
DieterGraef 0:d26c1b55cfca 462 }
DieterGraef 0:d26c1b55cfca 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
DieterGraef 0:d26c1b55cfca 464 /*
DieterGraef 0:d26c1b55cfca 465 * We wanted the peer to authenticate itself, and it refused:
DieterGraef 0:d26c1b55cfca 466 * treat it as though it authenticated with PAP using a username
DieterGraef 0:d26c1b55cfca 467 * of "" and a password of "". If that's not OK, boot it out.
DieterGraef 0:d26c1b55cfca 468 */
DieterGraef 0:d26c1b55cfca 469 if (!wo->neg_upap || !null_login(unit)) {
DieterGraef 0:d26c1b55cfca 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
DieterGraef 0:d26c1b55cfca 471 lcp_close(unit, "peer refused to authenticate");
DieterGraef 0:d26c1b55cfca 472 return;
DieterGraef 0:d26c1b55cfca 473 }
DieterGraef 0:d26c1b55cfca 474 }
DieterGraef 0:d26c1b55cfca 475
DieterGraef 0:d26c1b55cfca 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
DieterGraef 0:d26c1b55cfca 477 auth = 0;
DieterGraef 0:d26c1b55cfca 478 #if CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 479 if (go->neg_chap) {
DieterGraef 0:d26c1b55cfca 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
DieterGraef 0:d26c1b55cfca 481 auth |= CHAP_PEER;
DieterGraef 0:d26c1b55cfca 482 }
DieterGraef 0:d26c1b55cfca 483 #endif /* CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 484 #if PAP_SUPPORT && CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 485 else
DieterGraef 0:d26c1b55cfca 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 487 #if PAP_SUPPORT
DieterGraef 0:d26c1b55cfca 488 if (go->neg_upap) {
DieterGraef 0:d26c1b55cfca 489 upap_authpeer(unit);
DieterGraef 0:d26c1b55cfca 490 auth |= PAP_PEER;
DieterGraef 0:d26c1b55cfca 491 }
DieterGraef 0:d26c1b55cfca 492 #endif /* PAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 493 #if CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 494 if (ho->neg_chap) {
DieterGraef 0:d26c1b55cfca 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
DieterGraef 0:d26c1b55cfca 496 auth |= CHAP_WITHPEER;
DieterGraef 0:d26c1b55cfca 497 }
DieterGraef 0:d26c1b55cfca 498 #endif /* CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 499 #if PAP_SUPPORT && CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 500 else
DieterGraef 0:d26c1b55cfca 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 502 #if PAP_SUPPORT
DieterGraef 0:d26c1b55cfca 503 if (ho->neg_upap) {
DieterGraef 0:d26c1b55cfca 504 if (ppp_settings.passwd[0] == 0) {
DieterGraef 0:d26c1b55cfca 505 passwd_from_file = 1;
DieterGraef 0:d26c1b55cfca 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
DieterGraef 0:d26c1b55cfca 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
DieterGraef 0:d26c1b55cfca 508 }
DieterGraef 0:d26c1b55cfca 509 }
DieterGraef 0:d26c1b55cfca 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
DieterGraef 0:d26c1b55cfca 511 auth |= PAP_WITHPEER;
DieterGraef 0:d26c1b55cfca 512 }
DieterGraef 0:d26c1b55cfca 513 #endif /* PAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 514 auth_pending[unit] = auth;
DieterGraef 0:d26c1b55cfca 515
DieterGraef 0:d26c1b55cfca 516 if (!auth) {
DieterGraef 0:d26c1b55cfca 517 network_phase(unit);
DieterGraef 0:d26c1b55cfca 518 }
DieterGraef 0:d26c1b55cfca 519 }
DieterGraef 0:d26c1b55cfca 520
DieterGraef 0:d26c1b55cfca 521 /*
DieterGraef 0:d26c1b55cfca 522 * Proceed to the network phase.
DieterGraef 0:d26c1b55cfca 523 */
DieterGraef 0:d26c1b55cfca 524 static void
DieterGraef 0:d26c1b55cfca 525 network_phase(int unit)
DieterGraef 0:d26c1b55cfca 526 {
DieterGraef 0:d26c1b55cfca 527 int i;
DieterGraef 0:d26c1b55cfca 528 struct protent *protp;
DieterGraef 0:d26c1b55cfca 529 lcp_options *go = &lcp_gotoptions[unit];
DieterGraef 0:d26c1b55cfca 530
DieterGraef 0:d26c1b55cfca 531 /*
DieterGraef 0:d26c1b55cfca 532 * If the peer had to authenticate, run the auth-up script now.
DieterGraef 0:d26c1b55cfca 533 */
DieterGraef 0:d26c1b55cfca 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
DieterGraef 0:d26c1b55cfca 535 /* XXX Do setup for peer authentication. */
DieterGraef 0:d26c1b55cfca 536 did_authup = 1;
DieterGraef 0:d26c1b55cfca 537 }
DieterGraef 0:d26c1b55cfca 538
DieterGraef 0:d26c1b55cfca 539 #if CBCP_SUPPORT
DieterGraef 0:d26c1b55cfca 540 /*
DieterGraef 0:d26c1b55cfca 541 * If we negotiated callback, do it now.
DieterGraef 0:d26c1b55cfca 542 */
DieterGraef 0:d26c1b55cfca 543 if (go->neg_cbcp) {
DieterGraef 0:d26c1b55cfca 544 lcp_phase[unit] = PHASE_CALLBACK;
DieterGraef 0:d26c1b55cfca 545 (*cbcp_protent.open)(unit);
DieterGraef 0:d26c1b55cfca 546 return;
DieterGraef 0:d26c1b55cfca 547 }
DieterGraef 0:d26c1b55cfca 548 #endif /* CBCP_SUPPORT */
DieterGraef 0:d26c1b55cfca 549
DieterGraef 0:d26c1b55cfca 550 lcp_phase[unit] = PHASE_NETWORK;
DieterGraef 0:d26c1b55cfca 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
DieterGraef 0:d26c1b55cfca 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
DieterGraef 0:d26c1b55cfca 553 (*protp->open)(unit);
DieterGraef 0:d26c1b55cfca 554 if (protp->protocol != PPP_CCP) {
DieterGraef 0:d26c1b55cfca 555 ++num_np_open;
DieterGraef 0:d26c1b55cfca 556 }
DieterGraef 0:d26c1b55cfca 557 }
DieterGraef 0:d26c1b55cfca 558 }
DieterGraef 0:d26c1b55cfca 559
DieterGraef 0:d26c1b55cfca 560 if (num_np_open == 0) {
DieterGraef 0:d26c1b55cfca 561 /* nothing to do */
DieterGraef 0:d26c1b55cfca 562 lcp_close(0, "No network protocols running");
DieterGraef 0:d26c1b55cfca 563 }
DieterGraef 0:d26c1b55cfca 564 }
DieterGraef 0:d26c1b55cfca 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
DieterGraef 0:d26c1b55cfca 566
DieterGraef 0:d26c1b55cfca 567 /*
DieterGraef 0:d26c1b55cfca 568 * The peer has failed to authenticate himself using `protocol'.
DieterGraef 0:d26c1b55cfca 569 */
DieterGraef 0:d26c1b55cfca 570 void
DieterGraef 0:d26c1b55cfca 571 auth_peer_fail(int unit, u16_t protocol)
DieterGraef 0:d26c1b55cfca 572 {
DieterGraef 0:d26c1b55cfca 573 LWIP_UNUSED_ARG(protocol);
DieterGraef 0:d26c1b55cfca 574
DieterGraef 0:d26c1b55cfca 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
DieterGraef 0:d26c1b55cfca 576 /*
DieterGraef 0:d26c1b55cfca 577 * Authentication failure: take the link down
DieterGraef 0:d26c1b55cfca 578 */
DieterGraef 0:d26c1b55cfca 579 lcp_close(unit, "Authentication failed");
DieterGraef 0:d26c1b55cfca 580 }
DieterGraef 0:d26c1b55cfca 581
DieterGraef 0:d26c1b55cfca 582
DieterGraef 0:d26c1b55cfca 583 #if PAP_SUPPORT || CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 584 /*
DieterGraef 0:d26c1b55cfca 585 * The peer has been successfully authenticated using `protocol'.
DieterGraef 0:d26c1b55cfca 586 */
DieterGraef 0:d26c1b55cfca 587 void
DieterGraef 0:d26c1b55cfca 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
DieterGraef 0:d26c1b55cfca 589 {
DieterGraef 0:d26c1b55cfca 590 int pbit;
DieterGraef 0:d26c1b55cfca 591
DieterGraef 0:d26c1b55cfca 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
DieterGraef 0:d26c1b55cfca 593 switch (protocol) {
DieterGraef 0:d26c1b55cfca 594 case PPP_CHAP:
DieterGraef 0:d26c1b55cfca 595 pbit = CHAP_PEER;
DieterGraef 0:d26c1b55cfca 596 break;
DieterGraef 0:d26c1b55cfca 597 case PPP_PAP:
DieterGraef 0:d26c1b55cfca 598 pbit = PAP_PEER;
DieterGraef 0:d26c1b55cfca 599 break;
DieterGraef 0:d26c1b55cfca 600 default:
DieterGraef 0:d26c1b55cfca 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
DieterGraef 0:d26c1b55cfca 602 return;
DieterGraef 0:d26c1b55cfca 603 }
DieterGraef 0:d26c1b55cfca 604
DieterGraef 0:d26c1b55cfca 605 /*
DieterGraef 0:d26c1b55cfca 606 * Save the authenticated name of the peer for later.
DieterGraef 0:d26c1b55cfca 607 */
DieterGraef 0:d26c1b55cfca 608 if (namelen > (int)sizeof(peer_authname) - 1) {
DieterGraef 0:d26c1b55cfca 609 namelen = sizeof(peer_authname) - 1;
DieterGraef 0:d26c1b55cfca 610 }
DieterGraef 0:d26c1b55cfca 611 BCOPY(name, peer_authname, namelen);
DieterGraef 0:d26c1b55cfca 612 peer_authname[namelen] = 0;
DieterGraef 0:d26c1b55cfca 613
DieterGraef 0:d26c1b55cfca 614 /*
DieterGraef 0:d26c1b55cfca 615 * If there is no more authentication still to be done,
DieterGraef 0:d26c1b55cfca 616 * proceed to the network (or callback) phase.
DieterGraef 0:d26c1b55cfca 617 */
DieterGraef 0:d26c1b55cfca 618 if ((auth_pending[unit] &= ~pbit) == 0) {
DieterGraef 0:d26c1b55cfca 619 network_phase(unit);
DieterGraef 0:d26c1b55cfca 620 }
DieterGraef 0:d26c1b55cfca 621 }
DieterGraef 0:d26c1b55cfca 622
DieterGraef 0:d26c1b55cfca 623 /*
DieterGraef 0:d26c1b55cfca 624 * We have failed to authenticate ourselves to the peer using `protocol'.
DieterGraef 0:d26c1b55cfca 625 */
DieterGraef 0:d26c1b55cfca 626 void
DieterGraef 0:d26c1b55cfca 627 auth_withpeer_fail(int unit, u16_t protocol)
DieterGraef 0:d26c1b55cfca 628 {
DieterGraef 0:d26c1b55cfca 629 int errCode = PPPERR_AUTHFAIL;
DieterGraef 0:d26c1b55cfca 630
DieterGraef 0:d26c1b55cfca 631 LWIP_UNUSED_ARG(protocol);
DieterGraef 0:d26c1b55cfca 632
DieterGraef 0:d26c1b55cfca 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
DieterGraef 0:d26c1b55cfca 634 if (passwd_from_file) {
DieterGraef 0:d26c1b55cfca 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
DieterGraef 0:d26c1b55cfca 636 }
DieterGraef 0:d26c1b55cfca 637
DieterGraef 0:d26c1b55cfca 638 /*
DieterGraef 0:d26c1b55cfca 639 * We've failed to authenticate ourselves to our peer.
DieterGraef 0:d26c1b55cfca 640 * He'll probably take the link down, and there's not much
DieterGraef 0:d26c1b55cfca 641 * we can do except wait for that.
DieterGraef 0:d26c1b55cfca 642 */
DieterGraef 0:d26c1b55cfca 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
DieterGraef 0:d26c1b55cfca 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
DieterGraef 0:d26c1b55cfca 645 }
DieterGraef 0:d26c1b55cfca 646
DieterGraef 0:d26c1b55cfca 647 /*
DieterGraef 0:d26c1b55cfca 648 * We have successfully authenticated ourselves with the peer using `protocol'.
DieterGraef 0:d26c1b55cfca 649 */
DieterGraef 0:d26c1b55cfca 650 void
DieterGraef 0:d26c1b55cfca 651 auth_withpeer_success(int unit, u16_t protocol)
DieterGraef 0:d26c1b55cfca 652 {
DieterGraef 0:d26c1b55cfca 653 int pbit;
DieterGraef 0:d26c1b55cfca 654
DieterGraef 0:d26c1b55cfca 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
DieterGraef 0:d26c1b55cfca 656 switch (protocol) {
DieterGraef 0:d26c1b55cfca 657 case PPP_CHAP:
DieterGraef 0:d26c1b55cfca 658 pbit = CHAP_WITHPEER;
DieterGraef 0:d26c1b55cfca 659 break;
DieterGraef 0:d26c1b55cfca 660 case PPP_PAP:
DieterGraef 0:d26c1b55cfca 661 if (passwd_from_file) {
DieterGraef 0:d26c1b55cfca 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
DieterGraef 0:d26c1b55cfca 663 }
DieterGraef 0:d26c1b55cfca 664 pbit = PAP_WITHPEER;
DieterGraef 0:d26c1b55cfca 665 break;
DieterGraef 0:d26c1b55cfca 666 default:
DieterGraef 0:d26c1b55cfca 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
DieterGraef 0:d26c1b55cfca 668 pbit = 0;
DieterGraef 0:d26c1b55cfca 669 }
DieterGraef 0:d26c1b55cfca 670
DieterGraef 0:d26c1b55cfca 671 /*
DieterGraef 0:d26c1b55cfca 672 * If there is no more authentication still being done,
DieterGraef 0:d26c1b55cfca 673 * proceed to the network (or callback) phase.
DieterGraef 0:d26c1b55cfca 674 */
DieterGraef 0:d26c1b55cfca 675 if ((auth_pending[unit] &= ~pbit) == 0) {
DieterGraef 0:d26c1b55cfca 676 network_phase(unit);
DieterGraef 0:d26c1b55cfca 677 }
DieterGraef 0:d26c1b55cfca 678 }
DieterGraef 0:d26c1b55cfca 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 680
DieterGraef 0:d26c1b55cfca 681
DieterGraef 0:d26c1b55cfca 682 /*
DieterGraef 0:d26c1b55cfca 683 * np_up - a network protocol has come up.
DieterGraef 0:d26c1b55cfca 684 */
DieterGraef 0:d26c1b55cfca 685 void
DieterGraef 0:d26c1b55cfca 686 np_up(int unit, u16_t proto)
DieterGraef 0:d26c1b55cfca 687 {
DieterGraef 0:d26c1b55cfca 688 LWIP_UNUSED_ARG(unit);
DieterGraef 0:d26c1b55cfca 689 LWIP_UNUSED_ARG(proto);
DieterGraef 0:d26c1b55cfca 690
DieterGraef 0:d26c1b55cfca 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
DieterGraef 0:d26c1b55cfca 692 if (num_np_up == 0) {
DieterGraef 0:d26c1b55cfca 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
DieterGraef 0:d26c1b55cfca 694 /*
DieterGraef 0:d26c1b55cfca 695 * At this point we consider that the link has come up successfully.
DieterGraef 0:d26c1b55cfca 696 */
DieterGraef 0:d26c1b55cfca 697 if (ppp_settings.idle_time_limit > 0) {
DieterGraef 0:d26c1b55cfca 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
DieterGraef 0:d26c1b55cfca 699 }
DieterGraef 0:d26c1b55cfca 700
DieterGraef 0:d26c1b55cfca 701 /*
DieterGraef 0:d26c1b55cfca 702 * Set a timeout to close the connection once the maximum
DieterGraef 0:d26c1b55cfca 703 * connect time has expired.
DieterGraef 0:d26c1b55cfca 704 */
DieterGraef 0:d26c1b55cfca 705 if (ppp_settings.maxconnect > 0) {
DieterGraef 0:d26c1b55cfca 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
DieterGraef 0:d26c1b55cfca 707 }
DieterGraef 0:d26c1b55cfca 708 }
DieterGraef 0:d26c1b55cfca 709 ++num_np_up;
DieterGraef 0:d26c1b55cfca 710 }
DieterGraef 0:d26c1b55cfca 711
DieterGraef 0:d26c1b55cfca 712 /*
DieterGraef 0:d26c1b55cfca 713 * np_down - a network protocol has gone down.
DieterGraef 0:d26c1b55cfca 714 */
DieterGraef 0:d26c1b55cfca 715 void
DieterGraef 0:d26c1b55cfca 716 np_down(int unit, u16_t proto)
DieterGraef 0:d26c1b55cfca 717 {
DieterGraef 0:d26c1b55cfca 718 LWIP_UNUSED_ARG(unit);
DieterGraef 0:d26c1b55cfca 719 LWIP_UNUSED_ARG(proto);
DieterGraef 0:d26c1b55cfca 720
DieterGraef 0:d26c1b55cfca 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
DieterGraef 0:d26c1b55cfca 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
DieterGraef 0:d26c1b55cfca 723 UNTIMEOUT(check_idle, NULL);
DieterGraef 0:d26c1b55cfca 724 }
DieterGraef 0:d26c1b55cfca 725 }
DieterGraef 0:d26c1b55cfca 726
DieterGraef 0:d26c1b55cfca 727 /*
DieterGraef 0:d26c1b55cfca 728 * np_finished - a network protocol has finished using the link.
DieterGraef 0:d26c1b55cfca 729 */
DieterGraef 0:d26c1b55cfca 730 void
DieterGraef 0:d26c1b55cfca 731 np_finished(int unit, u16_t proto)
DieterGraef 0:d26c1b55cfca 732 {
DieterGraef 0:d26c1b55cfca 733 LWIP_UNUSED_ARG(unit);
DieterGraef 0:d26c1b55cfca 734 LWIP_UNUSED_ARG(proto);
DieterGraef 0:d26c1b55cfca 735
DieterGraef 0:d26c1b55cfca 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
DieterGraef 0:d26c1b55cfca 737 if (--num_np_open <= 0) {
DieterGraef 0:d26c1b55cfca 738 /* no further use for the link: shut up shop. */
DieterGraef 0:d26c1b55cfca 739 lcp_close(0, "No network protocols running");
DieterGraef 0:d26c1b55cfca 740 }
DieterGraef 0:d26c1b55cfca 741 }
DieterGraef 0:d26c1b55cfca 742
DieterGraef 0:d26c1b55cfca 743 /*
DieterGraef 0:d26c1b55cfca 744 * check_idle - check whether the link has been idle for long
DieterGraef 0:d26c1b55cfca 745 * enough that we can shut it down.
DieterGraef 0:d26c1b55cfca 746 */
DieterGraef 0:d26c1b55cfca 747 static void
DieterGraef 0:d26c1b55cfca 748 check_idle(void *arg)
DieterGraef 0:d26c1b55cfca 749 {
DieterGraef 0:d26c1b55cfca 750 struct ppp_idle idle;
DieterGraef 0:d26c1b55cfca 751 u_short itime;
DieterGraef 0:d26c1b55cfca 752
DieterGraef 0:d26c1b55cfca 753 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 754 if (!get_idle_time(0, &idle)) {
DieterGraef 0:d26c1b55cfca 755 return;
DieterGraef 0:d26c1b55cfca 756 }
DieterGraef 0:d26c1b55cfca 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
DieterGraef 0:d26c1b55cfca 758 if (itime >= ppp_settings.idle_time_limit) {
DieterGraef 0:d26c1b55cfca 759 /* link is idle: shut it down. */
DieterGraef 0:d26c1b55cfca 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
DieterGraef 0:d26c1b55cfca 761 lcp_close(0, "Link inactive");
DieterGraef 0:d26c1b55cfca 762 } else {
DieterGraef 0:d26c1b55cfca 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
DieterGraef 0:d26c1b55cfca 764 }
DieterGraef 0:d26c1b55cfca 765 }
DieterGraef 0:d26c1b55cfca 766
DieterGraef 0:d26c1b55cfca 767 /*
DieterGraef 0:d26c1b55cfca 768 * connect_time_expired - log a message and close the connection.
DieterGraef 0:d26c1b55cfca 769 */
DieterGraef 0:d26c1b55cfca 770 static void
DieterGraef 0:d26c1b55cfca 771 connect_time_expired(void *arg)
DieterGraef 0:d26c1b55cfca 772 {
DieterGraef 0:d26c1b55cfca 773 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 774
DieterGraef 0:d26c1b55cfca 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
DieterGraef 0:d26c1b55cfca 776 lcp_close(0, "Connect time expired"); /* Close connection */
DieterGraef 0:d26c1b55cfca 777 }
DieterGraef 0:d26c1b55cfca 778
DieterGraef 0:d26c1b55cfca 779 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 780 /*
DieterGraef 0:d26c1b55cfca 781 * auth_check_options - called to check authentication options.
DieterGraef 0:d26c1b55cfca 782 */
DieterGraef 0:d26c1b55cfca 783 void
DieterGraef 0:d26c1b55cfca 784 auth_check_options(void)
DieterGraef 0:d26c1b55cfca 785 {
DieterGraef 0:d26c1b55cfca 786 lcp_options *wo = &lcp_wantoptions[0];
DieterGraef 0:d26c1b55cfca 787 int can_auth;
DieterGraef 0:d26c1b55cfca 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
DieterGraef 0:d26c1b55cfca 789 u32_t remote;
DieterGraef 0:d26c1b55cfca 790
DieterGraef 0:d26c1b55cfca 791 /* Default our_name to hostname, and user to our_name */
DieterGraef 0:d26c1b55cfca 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
DieterGraef 0:d26c1b55cfca 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
DieterGraef 0:d26c1b55cfca 794 }
DieterGraef 0:d26c1b55cfca 795
DieterGraef 0:d26c1b55cfca 796 if (ppp_settings.user[0] == 0) {
DieterGraef 0:d26c1b55cfca 797 strcpy(ppp_settings.user, ppp_settings.our_name);
DieterGraef 0:d26c1b55cfca 798 }
DieterGraef 0:d26c1b55cfca 799
DieterGraef 0:d26c1b55cfca 800 /* If authentication is required, ask peer for CHAP or PAP. */
DieterGraef 0:d26c1b55cfca 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
DieterGraef 0:d26c1b55cfca 802 wo->neg_chap = 1;
DieterGraef 0:d26c1b55cfca 803 wo->neg_upap = 1;
DieterGraef 0:d26c1b55cfca 804 }
DieterGraef 0:d26c1b55cfca 805
DieterGraef 0:d26c1b55cfca 806 /*
DieterGraef 0:d26c1b55cfca 807 * Check whether we have appropriate secrets to use
DieterGraef 0:d26c1b55cfca 808 * to authenticate the peer.
DieterGraef 0:d26c1b55cfca 809 */
DieterGraef 0:d26c1b55cfca 810 can_auth = wo->neg_upap && have_pap_secret();
DieterGraef 0:d26c1b55cfca 811 if (!can_auth && wo->neg_chap) {
DieterGraef 0:d26c1b55cfca 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
DieterGraef 0:d26c1b55cfca 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
DieterGraef 0:d26c1b55cfca 814 }
DieterGraef 0:d26c1b55cfca 815
DieterGraef 0:d26c1b55cfca 816 if (ppp_settings.auth_required && !can_auth) {
DieterGraef 0:d26c1b55cfca 817 ppp_panic("No auth secret");
DieterGraef 0:d26c1b55cfca 818 }
DieterGraef 0:d26c1b55cfca 819 }
DieterGraef 0:d26c1b55cfca 820 #endif /* UNUSED */
DieterGraef 0:d26c1b55cfca 821
DieterGraef 0:d26c1b55cfca 822 /*
DieterGraef 0:d26c1b55cfca 823 * auth_reset - called when LCP is starting negotiations to recheck
DieterGraef 0:d26c1b55cfca 824 * authentication options, i.e. whether we have appropriate secrets
DieterGraef 0:d26c1b55cfca 825 * to use for authenticating ourselves and/or the peer.
DieterGraef 0:d26c1b55cfca 826 */
DieterGraef 0:d26c1b55cfca 827 void
DieterGraef 0:d26c1b55cfca 828 auth_reset(int unit)
DieterGraef 0:d26c1b55cfca 829 {
DieterGraef 0:d26c1b55cfca 830 lcp_options *go = &lcp_gotoptions[unit];
DieterGraef 0:d26c1b55cfca 831 lcp_options *ao = &lcp_allowoptions[0];
DieterGraef 0:d26c1b55cfca 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
DieterGraef 0:d26c1b55cfca 833 u32_t remote;
DieterGraef 0:d26c1b55cfca 834
DieterGraef 0:d26c1b55cfca 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
DieterGraef 0:d26c1b55cfca 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
DieterGraef 0:d26c1b55cfca 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)*/;
DieterGraef 0:d26c1b55cfca 838
DieterGraef 0:d26c1b55cfca 839 if (go->neg_upap && !have_pap_secret()) {
DieterGraef 0:d26c1b55cfca 840 go->neg_upap = 0;
DieterGraef 0:d26c1b55cfca 841 }
DieterGraef 0:d26c1b55cfca 842 if (go->neg_chap) {
DieterGraef 0:d26c1b55cfca 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
DieterGraef 0:d26c1b55cfca 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
DieterGraef 0:d26c1b55cfca 845 go->neg_chap = 0;
DieterGraef 0:d26c1b55cfca 846 }
DieterGraef 0:d26c1b55cfca 847 }
DieterGraef 0:d26c1b55cfca 848 }
DieterGraef 0:d26c1b55cfca 849
DieterGraef 0:d26c1b55cfca 850 #if PAP_SUPPORT
DieterGraef 0:d26c1b55cfca 851 /*
DieterGraef 0:d26c1b55cfca 852 * check_passwd - Check the user name and passwd against the PAP secrets
DieterGraef 0:d26c1b55cfca 853 * file. If requested, also check against the system password database,
DieterGraef 0:d26c1b55cfca 854 * and login the user if OK.
DieterGraef 0:d26c1b55cfca 855 *
DieterGraef 0:d26c1b55cfca 856 * returns:
DieterGraef 0:d26c1b55cfca 857 * UPAP_AUTHNAK: Authentication failed.
DieterGraef 0:d26c1b55cfca 858 * UPAP_AUTHACK: Authentication succeeded.
DieterGraef 0:d26c1b55cfca 859 * In either case, msg points to an appropriate message.
DieterGraef 0:d26c1b55cfca 860 */
DieterGraef 0:d26c1b55cfca 861 u_char
DieterGraef 0:d26c1b55cfca 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
DieterGraef 0:d26c1b55cfca 863 {
DieterGraef 0:d26c1b55cfca 864 #if 1 /* XXX Assume all entries OK. */
DieterGraef 0:d26c1b55cfca 865 LWIP_UNUSED_ARG(unit);
DieterGraef 0:d26c1b55cfca 866 LWIP_UNUSED_ARG(auser);
DieterGraef 0:d26c1b55cfca 867 LWIP_UNUSED_ARG(userlen);
DieterGraef 0:d26c1b55cfca 868 LWIP_UNUSED_ARG(apasswd);
DieterGraef 0:d26c1b55cfca 869 LWIP_UNUSED_ARG(passwdlen);
DieterGraef 0:d26c1b55cfca 870 LWIP_UNUSED_ARG(msglen);
DieterGraef 0:d26c1b55cfca 871 *msg = (char *) 0;
DieterGraef 0:d26c1b55cfca 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
DieterGraef 0:d26c1b55cfca 873 #else
DieterGraef 0:d26c1b55cfca 874 u_char ret = 0;
DieterGraef 0:d26c1b55cfca 875 struct wordlist *addrs = NULL;
DieterGraef 0:d26c1b55cfca 876 char passwd[256], user[256];
DieterGraef 0:d26c1b55cfca 877 char secret[MAXWORDLEN];
DieterGraef 0:d26c1b55cfca 878 static u_short attempts = 0;
DieterGraef 0:d26c1b55cfca 879
DieterGraef 0:d26c1b55cfca 880 /*
DieterGraef 0:d26c1b55cfca 881 * Make copies of apasswd and auser, then null-terminate them.
DieterGraef 0:d26c1b55cfca 882 */
DieterGraef 0:d26c1b55cfca 883 BCOPY(apasswd, passwd, passwdlen);
DieterGraef 0:d26c1b55cfca 884 passwd[passwdlen] = '\0';
DieterGraef 0:d26c1b55cfca 885 BCOPY(auser, user, userlen);
DieterGraef 0:d26c1b55cfca 886 user[userlen] = '\0';
DieterGraef 0:d26c1b55cfca 887 *msg = (char *) 0;
DieterGraef 0:d26c1b55cfca 888
DieterGraef 0:d26c1b55cfca 889 /* XXX Validate user name and password. */
DieterGraef 0:d26c1b55cfca 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
DieterGraef 0:d26c1b55cfca 891
DieterGraef 0:d26c1b55cfca 892 if (ret == UPAP_AUTHNAK) {
DieterGraef 0:d26c1b55cfca 893 if (*msg == (char *) 0) {
DieterGraef 0:d26c1b55cfca 894 *msg = "Login incorrect";
DieterGraef 0:d26c1b55cfca 895 }
DieterGraef 0:d26c1b55cfca 896 *msglen = strlen(*msg);
DieterGraef 0:d26c1b55cfca 897 /*
DieterGraef 0:d26c1b55cfca 898 * Frustrate passwd stealer programs.
DieterGraef 0:d26c1b55cfca 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
DieterGraef 0:d26c1b55cfca 900 * On 10'th, drop the connection.
DieterGraef 0:d26c1b55cfca 901 */
DieterGraef 0:d26c1b55cfca 902 if (attempts++ >= 10) {
DieterGraef 0:d26c1b55cfca 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
DieterGraef 0:d26c1b55cfca 904 /*ppp_panic("Excess Bad Logins");*/
DieterGraef 0:d26c1b55cfca 905 }
DieterGraef 0:d26c1b55cfca 906 if (attempts > 3) {
DieterGraef 0:d26c1b55cfca 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
DieterGraef 0:d26c1b55cfca 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
DieterGraef 0:d26c1b55cfca 909 */
DieterGraef 0:d26c1b55cfca 910 /*sys_msleep((attempts - 3) * 5);*/
DieterGraef 0:d26c1b55cfca 911 }
DieterGraef 0:d26c1b55cfca 912 if (addrs != NULL) {
DieterGraef 0:d26c1b55cfca 913 free_wordlist(addrs);
DieterGraef 0:d26c1b55cfca 914 }
DieterGraef 0:d26c1b55cfca 915 } else {
DieterGraef 0:d26c1b55cfca 916 attempts = 0; /* Reset count */
DieterGraef 0:d26c1b55cfca 917 if (*msg == (char *) 0) {
DieterGraef 0:d26c1b55cfca 918 *msg = "Login ok";
DieterGraef 0:d26c1b55cfca 919 }
DieterGraef 0:d26c1b55cfca 920 *msglen = strlen(*msg);
DieterGraef 0:d26c1b55cfca 921 set_allowed_addrs(unit, addrs);
DieterGraef 0:d26c1b55cfca 922 }
DieterGraef 0:d26c1b55cfca 923
DieterGraef 0:d26c1b55cfca 924 BZERO(passwd, sizeof(passwd));
DieterGraef 0:d26c1b55cfca 925 BZERO(secret, sizeof(secret));
DieterGraef 0:d26c1b55cfca 926
DieterGraef 0:d26c1b55cfca 927 return ret;
DieterGraef 0:d26c1b55cfca 928 #endif
DieterGraef 0:d26c1b55cfca 929 }
DieterGraef 0:d26c1b55cfca 930 #endif /* PAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 931
DieterGraef 0:d26c1b55cfca 932 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 933 /*
DieterGraef 0:d26c1b55cfca 934 * This function is needed for PAM.
DieterGraef 0:d26c1b55cfca 935 */
DieterGraef 0:d26c1b55cfca 936
DieterGraef 0:d26c1b55cfca 937 #ifdef USE_PAM
DieterGraef 0:d26c1b55cfca 938
DieterGraef 0:d26c1b55cfca 939 /* lwip does not support PAM*/
DieterGraef 0:d26c1b55cfca 940
DieterGraef 0:d26c1b55cfca 941 #endif /* USE_PAM */
DieterGraef 0:d26c1b55cfca 942
DieterGraef 0:d26c1b55cfca 943 #endif /* UNUSED */
DieterGraef 0:d26c1b55cfca 944
DieterGraef 0:d26c1b55cfca 945
DieterGraef 0:d26c1b55cfca 946 #if 0 /* UNUSED */
DieterGraef 0:d26c1b55cfca 947 /*
DieterGraef 0:d26c1b55cfca 948 * plogin - Check the user name and password against the system
DieterGraef 0:d26c1b55cfca 949 * password database, and login the user if OK.
DieterGraef 0:d26c1b55cfca 950 *
DieterGraef 0:d26c1b55cfca 951 * returns:
DieterGraef 0:d26c1b55cfca 952 * UPAP_AUTHNAK: Login failed.
DieterGraef 0:d26c1b55cfca 953 * UPAP_AUTHACK: Login succeeded.
DieterGraef 0:d26c1b55cfca 954 * In either case, msg points to an appropriate message.
DieterGraef 0:d26c1b55cfca 955 */
DieterGraef 0:d26c1b55cfca 956 static int
DieterGraef 0:d26c1b55cfca 957 plogin(char *user, char *passwd, char **msg, int *msglen)
DieterGraef 0:d26c1b55cfca 958 {
DieterGraef 0:d26c1b55cfca 959
DieterGraef 0:d26c1b55cfca 960 LWIP_UNUSED_ARG(user);
DieterGraef 0:d26c1b55cfca 961 LWIP_UNUSED_ARG(passwd);
DieterGraef 0:d26c1b55cfca 962 LWIP_UNUSED_ARG(msg);
DieterGraef 0:d26c1b55cfca 963 LWIP_UNUSED_ARG(msglen);
DieterGraef 0:d26c1b55cfca 964
DieterGraef 0:d26c1b55cfca 965
DieterGraef 0:d26c1b55cfca 966 /* The new lines are here align the file when
DieterGraef 0:d26c1b55cfca 967 * compared against the pppd 2.3.11 code */
DieterGraef 0:d26c1b55cfca 968
DieterGraef 0:d26c1b55cfca 969
DieterGraef 0:d26c1b55cfca 970
DieterGraef 0:d26c1b55cfca 971
DieterGraef 0:d26c1b55cfca 972
DieterGraef 0:d26c1b55cfca 973
DieterGraef 0:d26c1b55cfca 974
DieterGraef 0:d26c1b55cfca 975
DieterGraef 0:d26c1b55cfca 976
DieterGraef 0:d26c1b55cfca 977
DieterGraef 0:d26c1b55cfca 978
DieterGraef 0:d26c1b55cfca 979
DieterGraef 0:d26c1b55cfca 980
DieterGraef 0:d26c1b55cfca 981
DieterGraef 0:d26c1b55cfca 982
DieterGraef 0:d26c1b55cfca 983
DieterGraef 0:d26c1b55cfca 984 /* XXX Fail until we decide that we want to support logins. */
DieterGraef 0:d26c1b55cfca 985 return (UPAP_AUTHNAK);
DieterGraef 0:d26c1b55cfca 986 }
DieterGraef 0:d26c1b55cfca 987 #endif
DieterGraef 0:d26c1b55cfca 988
DieterGraef 0:d26c1b55cfca 989
DieterGraef 0:d26c1b55cfca 990
DieterGraef 0:d26c1b55cfca 991 /*
DieterGraef 0:d26c1b55cfca 992 * plogout - Logout the user.
DieterGraef 0:d26c1b55cfca 993 */
DieterGraef 0:d26c1b55cfca 994 static void
DieterGraef 0:d26c1b55cfca 995 plogout(void)
DieterGraef 0:d26c1b55cfca 996 {
DieterGraef 0:d26c1b55cfca 997 logged_in = 0;
DieterGraef 0:d26c1b55cfca 998 }
DieterGraef 0:d26c1b55cfca 999
DieterGraef 0:d26c1b55cfca 1000 /*
DieterGraef 0:d26c1b55cfca 1001 * null_login - Check if a username of "" and a password of "" are
DieterGraef 0:d26c1b55cfca 1002 * acceptable, and iff so, set the list of acceptable IP addresses
DieterGraef 0:d26c1b55cfca 1003 * and return 1.
DieterGraef 0:d26c1b55cfca 1004 */
DieterGraef 0:d26c1b55cfca 1005 static int
DieterGraef 0:d26c1b55cfca 1006 null_login(int unit)
DieterGraef 0:d26c1b55cfca 1007 {
DieterGraef 0:d26c1b55cfca 1008 LWIP_UNUSED_ARG(unit);
DieterGraef 0:d26c1b55cfca 1009 /* XXX Fail until we decide that we want to support logins. */
DieterGraef 0:d26c1b55cfca 1010 return 0;
DieterGraef 0:d26c1b55cfca 1011 }
DieterGraef 0:d26c1b55cfca 1012
DieterGraef 0:d26c1b55cfca 1013
DieterGraef 0:d26c1b55cfca 1014 /*
DieterGraef 0:d26c1b55cfca 1015 * get_pap_passwd - get a password for authenticating ourselves with
DieterGraef 0:d26c1b55cfca 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
DieterGraef 0:d26c1b55cfca 1017 * could be found.
DieterGraef 0:d26c1b55cfca 1018 */
DieterGraef 0:d26c1b55cfca 1019 static int
DieterGraef 0:d26c1b55cfca 1020 get_pap_passwd(int unit, char *user, char *passwd)
DieterGraef 0:d26c1b55cfca 1021 {
DieterGraef 0:d26c1b55cfca 1022 LWIP_UNUSED_ARG(unit);
DieterGraef 0:d26c1b55cfca 1023 /* normally we would reject PAP if no password is provided,
DieterGraef 0:d26c1b55cfca 1024 but this causes problems with some providers (like CHT in Taiwan)
DieterGraef 0:d26c1b55cfca 1025 who incorrectly request PAP and expect a bogus/empty password, so
DieterGraef 0:d26c1b55cfca 1026 always provide a default user/passwd of "none"/"none"
DieterGraef 0:d26c1b55cfca 1027
DieterGraef 0:d26c1b55cfca 1028 @todo: This should be configured by the user, instead of being hardcoded here!
DieterGraef 0:d26c1b55cfca 1029 */
DieterGraef 0:d26c1b55cfca 1030 if(user) {
DieterGraef 0:d26c1b55cfca 1031 strcpy(user, "none");
DieterGraef 0:d26c1b55cfca 1032 }
DieterGraef 0:d26c1b55cfca 1033 if(passwd) {
DieterGraef 0:d26c1b55cfca 1034 strcpy(passwd, "none");
DieterGraef 0:d26c1b55cfca 1035 }
DieterGraef 0:d26c1b55cfca 1036 return 1;
DieterGraef 0:d26c1b55cfca 1037 }
DieterGraef 0:d26c1b55cfca 1038
DieterGraef 0:d26c1b55cfca 1039 /*
DieterGraef 0:d26c1b55cfca 1040 * have_pap_secret - check whether we have a PAP file with any
DieterGraef 0:d26c1b55cfca 1041 * secrets that we could possibly use for authenticating the peer.
DieterGraef 0:d26c1b55cfca 1042 */
DieterGraef 0:d26c1b55cfca 1043 static int
DieterGraef 0:d26c1b55cfca 1044 have_pap_secret(void)
DieterGraef 0:d26c1b55cfca 1045 {
DieterGraef 0:d26c1b55cfca 1046 /* XXX Fail until we set up our passwords. */
DieterGraef 0:d26c1b55cfca 1047 return 0;
DieterGraef 0:d26c1b55cfca 1048 }
DieterGraef 0:d26c1b55cfca 1049
DieterGraef 0:d26c1b55cfca 1050 /*
DieterGraef 0:d26c1b55cfca 1051 * have_chap_secret - check whether we have a CHAP file with a
DieterGraef 0:d26c1b55cfca 1052 * secret that we could possibly use for authenticating `client'
DieterGraef 0:d26c1b55cfca 1053 * on `server'. Either can be the null string, meaning we don't
DieterGraef 0:d26c1b55cfca 1054 * know the identity yet.
DieterGraef 0:d26c1b55cfca 1055 */
DieterGraef 0:d26c1b55cfca 1056 static int
DieterGraef 0:d26c1b55cfca 1057 have_chap_secret(char *client, char *server, u32_t remote)
DieterGraef 0:d26c1b55cfca 1058 {
DieterGraef 0:d26c1b55cfca 1059 LWIP_UNUSED_ARG(client);
DieterGraef 0:d26c1b55cfca 1060 LWIP_UNUSED_ARG(server);
DieterGraef 0:d26c1b55cfca 1061 LWIP_UNUSED_ARG(remote);
DieterGraef 0:d26c1b55cfca 1062
DieterGraef 0:d26c1b55cfca 1063 /* XXX Fail until we set up our passwords. */
DieterGraef 0:d26c1b55cfca 1064 return 0;
DieterGraef 0:d26c1b55cfca 1065 }
DieterGraef 0:d26c1b55cfca 1066 #if CHAP_SUPPORT
DieterGraef 0:d26c1b55cfca 1067
DieterGraef 0:d26c1b55cfca 1068 /*
DieterGraef 0:d26c1b55cfca 1069 * get_secret - open the CHAP secret file and return the secret
DieterGraef 0:d26c1b55cfca 1070 * for authenticating the given client on the given server.
DieterGraef 0:d26c1b55cfca 1071 * (We could be either client or server).
DieterGraef 0:d26c1b55cfca 1072 */
DieterGraef 0:d26c1b55cfca 1073 int
DieterGraef 0:d26c1b55cfca 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
DieterGraef 0:d26c1b55cfca 1075 {
DieterGraef 0:d26c1b55cfca 1076 #if 1
DieterGraef 0:d26c1b55cfca 1077 int len;
DieterGraef 0:d26c1b55cfca 1078 struct wordlist *addrs;
DieterGraef 0:d26c1b55cfca 1079
DieterGraef 0:d26c1b55cfca 1080 LWIP_UNUSED_ARG(unit);
DieterGraef 0:d26c1b55cfca 1081 LWIP_UNUSED_ARG(server);
DieterGraef 0:d26c1b55cfca 1082 LWIP_UNUSED_ARG(save_addrs);
DieterGraef 0:d26c1b55cfca 1083
DieterGraef 0:d26c1b55cfca 1084 addrs = NULL;
DieterGraef 0:d26c1b55cfca 1085
DieterGraef 0:d26c1b55cfca 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
DieterGraef 0:d26c1b55cfca 1087 return 0;
DieterGraef 0:d26c1b55cfca 1088 }
DieterGraef 0:d26c1b55cfca 1089
DieterGraef 0:d26c1b55cfca 1090 len = (int)strlen(ppp_settings.passwd);
DieterGraef 0:d26c1b55cfca 1091 if (len > MAXSECRETLEN) {
DieterGraef 0:d26c1b55cfca 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
DieterGraef 0:d26c1b55cfca 1093 len = MAXSECRETLEN;
DieterGraef 0:d26c1b55cfca 1094 }
DieterGraef 0:d26c1b55cfca 1095
DieterGraef 0:d26c1b55cfca 1096 BCOPY(ppp_settings.passwd, secret, len);
DieterGraef 0:d26c1b55cfca 1097 *secret_len = len;
DieterGraef 0:d26c1b55cfca 1098
DieterGraef 0:d26c1b55cfca 1099 return 1;
DieterGraef 0:d26c1b55cfca 1100 #else
DieterGraef 0:d26c1b55cfca 1101 int ret = 0, len;
DieterGraef 0:d26c1b55cfca 1102 struct wordlist *addrs;
DieterGraef 0:d26c1b55cfca 1103 char secbuf[MAXWORDLEN];
DieterGraef 0:d26c1b55cfca 1104
DieterGraef 0:d26c1b55cfca 1105 addrs = NULL;
DieterGraef 0:d26c1b55cfca 1106 secbuf[0] = 0;
DieterGraef 0:d26c1b55cfca 1107
DieterGraef 0:d26c1b55cfca 1108 /* XXX Find secret. */
DieterGraef 0:d26c1b55cfca 1109 if (ret < 0) {
DieterGraef 0:d26c1b55cfca 1110 return 0;
DieterGraef 0:d26c1b55cfca 1111 }
DieterGraef 0:d26c1b55cfca 1112
DieterGraef 0:d26c1b55cfca 1113 if (save_addrs) {
DieterGraef 0:d26c1b55cfca 1114 set_allowed_addrs(unit, addrs);
DieterGraef 0:d26c1b55cfca 1115 }
DieterGraef 0:d26c1b55cfca 1116
DieterGraef 0:d26c1b55cfca 1117 len = strlen(secbuf);
DieterGraef 0:d26c1b55cfca 1118 if (len > MAXSECRETLEN) {
DieterGraef 0:d26c1b55cfca 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
DieterGraef 0:d26c1b55cfca 1120 len = MAXSECRETLEN;
DieterGraef 0:d26c1b55cfca 1121 }
DieterGraef 0:d26c1b55cfca 1122
DieterGraef 0:d26c1b55cfca 1123 BCOPY(secbuf, secret, len);
DieterGraef 0:d26c1b55cfca 1124 BZERO(secbuf, sizeof(secbuf));
DieterGraef 0:d26c1b55cfca 1125 *secret_len = len;
DieterGraef 0:d26c1b55cfca 1126
DieterGraef 0:d26c1b55cfca 1127 return 1;
DieterGraef 0:d26c1b55cfca 1128 #endif
DieterGraef 0:d26c1b55cfca 1129 }
DieterGraef 0:d26c1b55cfca 1130 #endif /* CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 1131
DieterGraef 0:d26c1b55cfca 1132
DieterGraef 0:d26c1b55cfca 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 1134 /*
DieterGraef 0:d26c1b55cfca 1135 * set_allowed_addrs() - set the list of allowed addresses.
DieterGraef 0:d26c1b55cfca 1136 */
DieterGraef 0:d26c1b55cfca 1137 static void
DieterGraef 0:d26c1b55cfca 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
DieterGraef 0:d26c1b55cfca 1139 {
DieterGraef 0:d26c1b55cfca 1140 if (addresses[unit] != NULL) {
DieterGraef 0:d26c1b55cfca 1141 free_wordlist(addresses[unit]);
DieterGraef 0:d26c1b55cfca 1142 }
DieterGraef 0:d26c1b55cfca 1143 addresses[unit] = addrs;
DieterGraef 0:d26c1b55cfca 1144
DieterGraef 0:d26c1b55cfca 1145 #if 0
DieterGraef 0:d26c1b55cfca 1146 /*
DieterGraef 0:d26c1b55cfca 1147 * If there's only one authorized address we might as well
DieterGraef 0:d26c1b55cfca 1148 * ask our peer for that one right away
DieterGraef 0:d26c1b55cfca 1149 */
DieterGraef 0:d26c1b55cfca 1150 if (addrs != NULL && addrs->next == NULL) {
DieterGraef 0:d26c1b55cfca 1151 char *p = addrs->word;
DieterGraef 0:d26c1b55cfca 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
DieterGraef 0:d26c1b55cfca 1153 u32_t a;
DieterGraef 0:d26c1b55cfca 1154 struct hostent *hp;
DieterGraef 0:d26c1b55cfca 1155
DieterGraef 0:d26c1b55cfca 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
DieterGraef 0:d26c1b55cfca 1157 hp = gethostbyname(p);
DieterGraef 0:d26c1b55cfca 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
DieterGraef 0:d26c1b55cfca 1159 a = *(u32_t *)hp->h_addr;
DieterGraef 0:d26c1b55cfca 1160 } else {
DieterGraef 0:d26c1b55cfca 1161 a = inet_addr(p);
DieterGraef 0:d26c1b55cfca 1162 }
DieterGraef 0:d26c1b55cfca 1163 if (a != (u32_t) -1) {
DieterGraef 0:d26c1b55cfca 1164 wo->hisaddr = a;
DieterGraef 0:d26c1b55cfca 1165 }
DieterGraef 0:d26c1b55cfca 1166 }
DieterGraef 0:d26c1b55cfca 1167 }
DieterGraef 0:d26c1b55cfca 1168 #endif
DieterGraef 0:d26c1b55cfca 1169 }
DieterGraef 0:d26c1b55cfca 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 1171
DieterGraef 0:d26c1b55cfca 1172 /*
DieterGraef 0:d26c1b55cfca 1173 * auth_ip_addr - check whether the peer is authorized to use
DieterGraef 0:d26c1b55cfca 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
DieterGraef 0:d26c1b55cfca 1175 */
DieterGraef 0:d26c1b55cfca 1176 int
DieterGraef 0:d26c1b55cfca 1177 auth_ip_addr(int unit, u32_t addr)
DieterGraef 0:d26c1b55cfca 1178 {
DieterGraef 0:d26c1b55cfca 1179 return ip_addr_check(addr, addresses[unit]);
DieterGraef 0:d26c1b55cfca 1180 }
DieterGraef 0:d26c1b55cfca 1181
DieterGraef 0:d26c1b55cfca 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
DieterGraef 0:d26c1b55cfca 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
DieterGraef 0:d26c1b55cfca 1184 {
DieterGraef 0:d26c1b55cfca 1185 /* don't allow loopback or multicast address */
DieterGraef 0:d26c1b55cfca 1186 if (bad_ip_adrs(addr)) {
DieterGraef 0:d26c1b55cfca 1187 return 0;
DieterGraef 0:d26c1b55cfca 1188 }
DieterGraef 0:d26c1b55cfca 1189
DieterGraef 0:d26c1b55cfca 1190 if (addrs == NULL) {
DieterGraef 0:d26c1b55cfca 1191 return !ppp_settings.auth_required; /* no addresses authorized */
DieterGraef 0:d26c1b55cfca 1192 }
DieterGraef 0:d26c1b55cfca 1193
DieterGraef 0:d26c1b55cfca 1194 /* XXX All other addresses allowed. */
DieterGraef 0:d26c1b55cfca 1195 return 1;
DieterGraef 0:d26c1b55cfca 1196 }
DieterGraef 0:d26c1b55cfca 1197
DieterGraef 0:d26c1b55cfca 1198 /*
DieterGraef 0:d26c1b55cfca 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
DieterGraef 0:d26c1b55cfca 1200 * to use, such as an address in the loopback net or a multicast address.
DieterGraef 0:d26c1b55cfca 1201 * addr is in network byte order.
DieterGraef 0:d26c1b55cfca 1202 */
DieterGraef 0:d26c1b55cfca 1203 int
DieterGraef 0:d26c1b55cfca 1204 bad_ip_adrs(u32_t addr)
DieterGraef 0:d26c1b55cfca 1205 {
DieterGraef 0:d26c1b55cfca 1206 addr = ntohl(addr);
DieterGraef 0:d26c1b55cfca 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
DieterGraef 0:d26c1b55cfca 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
DieterGraef 0:d26c1b55cfca 1209 }
DieterGraef 0:d26c1b55cfca 1210
DieterGraef 0:d26c1b55cfca 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 1212 /*
DieterGraef 0:d26c1b55cfca 1213 * some_ip_ok - check a wordlist to see if it authorizes any
DieterGraef 0:d26c1b55cfca 1214 * IP address(es).
DieterGraef 0:d26c1b55cfca 1215 */
DieterGraef 0:d26c1b55cfca 1216 static int
DieterGraef 0:d26c1b55cfca 1217 some_ip_ok(struct wordlist *addrs)
DieterGraef 0:d26c1b55cfca 1218 {
DieterGraef 0:d26c1b55cfca 1219 for (; addrs != 0; addrs = addrs->next) {
DieterGraef 0:d26c1b55cfca 1220 if (addrs->word[0] == '-')
DieterGraef 0:d26c1b55cfca 1221 break;
DieterGraef 0:d26c1b55cfca 1222 if (addrs->word[0] != '!')
DieterGraef 0:d26c1b55cfca 1223 return 1; /* some IP address is allowed */
DieterGraef 0:d26c1b55cfca 1224 }
DieterGraef 0:d26c1b55cfca 1225 return 0;
DieterGraef 0:d26c1b55cfca 1226 }
DieterGraef 0:d26c1b55cfca 1227
DieterGraef 0:d26c1b55cfca 1228 /*
DieterGraef 0:d26c1b55cfca 1229 * check_access - complain if a secret file has too-liberal permissions.
DieterGraef 0:d26c1b55cfca 1230 */
DieterGraef 0:d26c1b55cfca 1231 static void
DieterGraef 0:d26c1b55cfca 1232 check_access(FILE *f, char *filename)
DieterGraef 0:d26c1b55cfca 1233 {
DieterGraef 0:d26c1b55cfca 1234 struct stat sbuf;
DieterGraef 0:d26c1b55cfca 1235
DieterGraef 0:d26c1b55cfca 1236 if (fstat(fileno(f), &sbuf) < 0) {
DieterGraef 0:d26c1b55cfca 1237 warn("cannot stat secret file %s: %m", filename);
DieterGraef 0:d26c1b55cfca 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
DieterGraef 0:d26c1b55cfca 1239 warn("Warning - secret file %s has world and/or group access",
DieterGraef 0:d26c1b55cfca 1240 filename);
DieterGraef 0:d26c1b55cfca 1241 }
DieterGraef 0:d26c1b55cfca 1242 }
DieterGraef 0:d26c1b55cfca 1243
DieterGraef 0:d26c1b55cfca 1244
DieterGraef 0:d26c1b55cfca 1245 /*
DieterGraef 0:d26c1b55cfca 1246 * scan_authfile - Scan an authorization file for a secret suitable
DieterGraef 0:d26c1b55cfca 1247 * for authenticating `client' on `server'. The return value is -1
DieterGraef 0:d26c1b55cfca 1248 * if no secret is found, otherwise >= 0. The return value has
DieterGraef 0:d26c1b55cfca 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
DieterGraef 0:d26c1b55cfca 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
DieterGraef 0:d26c1b55cfca 1251 * Any following words on the line up to a "--" (i.e. address authorization
DieterGraef 0:d26c1b55cfca 1252 * info) are placed in a wordlist and returned in *addrs. Any
DieterGraef 0:d26c1b55cfca 1253 * following words (extra options) are placed in a wordlist and
DieterGraef 0:d26c1b55cfca 1254 * returned in *opts.
DieterGraef 0:d26c1b55cfca 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
DieterGraef 0:d26c1b55cfca 1256 */
DieterGraef 0:d26c1b55cfca 1257 static int
DieterGraef 0:d26c1b55cfca 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
DieterGraef 0:d26c1b55cfca 1259 {
DieterGraef 0:d26c1b55cfca 1260 /* We do not (currently) need this in lwip */
DieterGraef 0:d26c1b55cfca 1261 return 0; /* dummy */
DieterGraef 0:d26c1b55cfca 1262 }
DieterGraef 0:d26c1b55cfca 1263 /*
DieterGraef 0:d26c1b55cfca 1264 * free_wordlist - release memory allocated for a wordlist.
DieterGraef 0:d26c1b55cfca 1265 */
DieterGraef 0:d26c1b55cfca 1266 static void
DieterGraef 0:d26c1b55cfca 1267 free_wordlist(struct wordlist *wp)
DieterGraef 0:d26c1b55cfca 1268 {
DieterGraef 0:d26c1b55cfca 1269 struct wordlist *next;
DieterGraef 0:d26c1b55cfca 1270
DieterGraef 0:d26c1b55cfca 1271 while (wp != NULL) {
DieterGraef 0:d26c1b55cfca 1272 next = wp->next;
DieterGraef 0:d26c1b55cfca 1273 free(wp);
DieterGraef 0:d26c1b55cfca 1274 wp = next;
DieterGraef 0:d26c1b55cfca 1275 }
DieterGraef 0:d26c1b55cfca 1276 }
DieterGraef 0:d26c1b55cfca 1277
DieterGraef 0:d26c1b55cfca 1278 /*
DieterGraef 0:d26c1b55cfca 1279 * auth_script_done - called when the auth-up or auth-down script
DieterGraef 0:d26c1b55cfca 1280 * has finished.
DieterGraef 0:d26c1b55cfca 1281 */
DieterGraef 0:d26c1b55cfca 1282 static void
DieterGraef 0:d26c1b55cfca 1283 auth_script_done(void *arg)
DieterGraef 0:d26c1b55cfca 1284 {
DieterGraef 0:d26c1b55cfca 1285 auth_script_pid = 0;
DieterGraef 0:d26c1b55cfca 1286 switch (auth_script_state) {
DieterGraef 0:d26c1b55cfca 1287 case s_up:
DieterGraef 0:d26c1b55cfca 1288 if (auth_state == s_down) {
DieterGraef 0:d26c1b55cfca 1289 auth_script_state = s_down;
DieterGraef 0:d26c1b55cfca 1290 auth_script(_PATH_AUTHDOWN);
DieterGraef 0:d26c1b55cfca 1291 }
DieterGraef 0:d26c1b55cfca 1292 break;
DieterGraef 0:d26c1b55cfca 1293 case s_down:
DieterGraef 0:d26c1b55cfca 1294 if (auth_state == s_up) {
DieterGraef 0:d26c1b55cfca 1295 auth_script_state = s_up;
DieterGraef 0:d26c1b55cfca 1296 auth_script(_PATH_AUTHUP);
DieterGraef 0:d26c1b55cfca 1297 }
DieterGraef 0:d26c1b55cfca 1298 break;
DieterGraef 0:d26c1b55cfca 1299 }
DieterGraef 0:d26c1b55cfca 1300 }
DieterGraef 0:d26c1b55cfca 1301
DieterGraef 0:d26c1b55cfca 1302 /*
DieterGraef 0:d26c1b55cfca 1303 * auth_script - execute a script with arguments
DieterGraef 0:d26c1b55cfca 1304 * interface-name peer-name real-user tty speed
DieterGraef 0:d26c1b55cfca 1305 */
DieterGraef 0:d26c1b55cfca 1306 static void
DieterGraef 0:d26c1b55cfca 1307 auth_script(char *script)
DieterGraef 0:d26c1b55cfca 1308 {
DieterGraef 0:d26c1b55cfca 1309 char strspeed[32];
DieterGraef 0:d26c1b55cfca 1310 struct passwd *pw;
DieterGraef 0:d26c1b55cfca 1311 char struid[32];
DieterGraef 0:d26c1b55cfca 1312 char *user_name;
DieterGraef 0:d26c1b55cfca 1313 char *argv[8];
DieterGraef 0:d26c1b55cfca 1314
DieterGraef 0:d26c1b55cfca 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
DieterGraef 0:d26c1b55cfca 1316 user_name = pw->pw_name;
DieterGraef 0:d26c1b55cfca 1317 else {
DieterGraef 0:d26c1b55cfca 1318 slprintf(struid, sizeof(struid), "%d", getuid());
DieterGraef 0:d26c1b55cfca 1319 user_name = struid;
DieterGraef 0:d26c1b55cfca 1320 }
DieterGraef 0:d26c1b55cfca 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
DieterGraef 0:d26c1b55cfca 1322
DieterGraef 0:d26c1b55cfca 1323 argv[0] = script;
DieterGraef 0:d26c1b55cfca 1324 argv[1] = ifname;
DieterGraef 0:d26c1b55cfca 1325 argv[2] = peer_authname;
DieterGraef 0:d26c1b55cfca 1326 argv[3] = user_name;
DieterGraef 0:d26c1b55cfca 1327 argv[4] = devnam;
DieterGraef 0:d26c1b55cfca 1328 argv[5] = strspeed;
DieterGraef 0:d26c1b55cfca 1329 argv[6] = NULL;
DieterGraef 0:d26c1b55cfca 1330
DieterGraef 0:d26c1b55cfca 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
DieterGraef 0:d26c1b55cfca 1332 }
DieterGraef 0:d26c1b55cfca 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:d26c1b55cfca 1334 #endif /* PPP_SUPPORT */