Arlindo Montagnoli / Mbed 2 deprecated ProjetoBB

ProjetoBB

Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

F7_Ethernet/lwip/netif/ppp/auth.c@0:f9b6112278fe, 2016-06-18 (annotated)

Committer:
DieterGraef
Date:
Sat Jun 18 10:49:12 2016 +0000
Revision:
0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /*****************************************************************************
DieterGraef 0:f9b6112278fe 2 * auth.c - Network Authentication and Phase Control program file.
DieterGraef 0:f9b6112278fe 3 *
DieterGraef 0:f9b6112278fe 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
DieterGraef 0:f9b6112278fe 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
DieterGraef 0:f9b6112278fe 6 *
DieterGraef 0:f9b6112278fe 7 * The authors hereby grant permission to use, copy, modify, distribute,
DieterGraef 0:f9b6112278fe 8 * and license this software and its documentation for any purpose, provided
DieterGraef 0:f9b6112278fe 9 * that existing copyright notices are retained in all copies and that this
DieterGraef 0:f9b6112278fe 10 * notice and the following disclaimer are included verbatim in any
DieterGraef 0:f9b6112278fe 11 * distributions. No written agreement, license, or royalty fee is required
DieterGraef 0:f9b6112278fe 12 * for any of the authorized uses.
DieterGraef 0:f9b6112278fe 13 *
DieterGraef 0:f9b6112278fe 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
DieterGraef 0:f9b6112278fe 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
DieterGraef 0:f9b6112278fe 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
DieterGraef 0:f9b6112278fe 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
DieterGraef 0:f9b6112278fe 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
DieterGraef 0:f9b6112278fe 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DieterGraef 0:f9b6112278fe 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
DieterGraef 0:f9b6112278fe 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
DieterGraef 0:f9b6112278fe 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
DieterGraef 0:f9b6112278fe 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
DieterGraef 0:f9b6112278fe 24 *
DieterGraef 0:f9b6112278fe 25 ******************************************************************************
DieterGraef 0:f9b6112278fe 26 * REVISION HISTORY
DieterGraef 0:f9b6112278fe 27 *
DieterGraef 0:f9b6112278fe 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
DieterGraef 0:f9b6112278fe 29 * Ported to lwIP.
DieterGraef 0:f9b6112278fe 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
DieterGraef 0:f9b6112278fe 31 * Ported from public pppd code.
DieterGraef 0:f9b6112278fe 32 *****************************************************************************/
DieterGraef 0:f9b6112278fe 33 /*
DieterGraef 0:f9b6112278fe 34 * auth.c - PPP authentication and phase control.
DieterGraef 0:f9b6112278fe 35 *
DieterGraef 0:f9b6112278fe 36 * Copyright (c) 1993 The Australian National University.
DieterGraef 0:f9b6112278fe 37 * All rights reserved.
DieterGraef 0:f9b6112278fe 38 *
DieterGraef 0:f9b6112278fe 39 * Redistribution and use in source and binary forms are permitted
DieterGraef 0:f9b6112278fe 40 * provided that the above copyright notice and this paragraph are
DieterGraef 0:f9b6112278fe 41 * duplicated in all such forms and that any documentation,
DieterGraef 0:f9b6112278fe 42 * advertising materials, and other materials related to such
DieterGraef 0:f9b6112278fe 43 * distribution and use acknowledge that the software was developed
DieterGraef 0:f9b6112278fe 44 * by the Australian National University. The name of the University
DieterGraef 0:f9b6112278fe 45 * may not be used to endorse or promote products derived from this
DieterGraef 0:f9b6112278fe 46 * software without specific prior written permission.
DieterGraef 0:f9b6112278fe 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
DieterGraef 0:f9b6112278fe 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
DieterGraef 0:f9b6112278fe 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
DieterGraef 0:f9b6112278fe 50 *
DieterGraef 0:f9b6112278fe 51 * Copyright (c) 1989 Carnegie Mellon University.
DieterGraef 0:f9b6112278fe 52 * All rights reserved.
DieterGraef 0:f9b6112278fe 53 *
DieterGraef 0:f9b6112278fe 54 * Redistribution and use in source and binary forms are permitted
DieterGraef 0:f9b6112278fe 55 * provided that the above copyright notice and this paragraph are
DieterGraef 0:f9b6112278fe 56 * duplicated in all such forms and that any documentation,
DieterGraef 0:f9b6112278fe 57 * advertising materials, and other materials related to such
DieterGraef 0:f9b6112278fe 58 * distribution and use acknowledge that the software was developed
DieterGraef 0:f9b6112278fe 59 * by Carnegie Mellon University. The name of the
DieterGraef 0:f9b6112278fe 60 * University may not be used to endorse or promote products derived
DieterGraef 0:f9b6112278fe 61 * from this software without specific prior written permission.
DieterGraef 0:f9b6112278fe 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
DieterGraef 0:f9b6112278fe 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
DieterGraef 0:f9b6112278fe 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
DieterGraef 0:f9b6112278fe 65 */
DieterGraef 0:f9b6112278fe 66
DieterGraef 0:f9b6112278fe 67 #include "lwip/opt.h"
DieterGraef 0:f9b6112278fe 68
DieterGraef 0:f9b6112278fe 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
DieterGraef 0:f9b6112278fe 70
DieterGraef 0:f9b6112278fe 71 #include "ppp_impl.h"
DieterGraef 0:f9b6112278fe 72 #include "pppdebug.h"
DieterGraef 0:f9b6112278fe 73
DieterGraef 0:f9b6112278fe 74 #include "fsm.h"
DieterGraef 0:f9b6112278fe 75 #include "lcp.h"
DieterGraef 0:f9b6112278fe 76 #include "pap.h"
DieterGraef 0:f9b6112278fe 77 #include "chap.h"
DieterGraef 0:f9b6112278fe 78 #include "auth.h"
DieterGraef 0:f9b6112278fe 79 #include "ipcp.h"
DieterGraef 0:f9b6112278fe 80
DieterGraef 0:f9b6112278fe 81 #if CBCP_SUPPORT
DieterGraef 0:f9b6112278fe 82 #include "cbcp.h"
DieterGraef 0:f9b6112278fe 83 #endif /* CBCP_SUPPORT */
DieterGraef 0:f9b6112278fe 84
DieterGraef 0:f9b6112278fe 85 #include "lwip/inet.h"
DieterGraef 0:f9b6112278fe 86
DieterGraef 0:f9b6112278fe 87 #include <string.h>
DieterGraef 0:f9b6112278fe 88
DieterGraef 0:f9b6112278fe 89 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 90 /* Bits in scan_authfile return value */
DieterGraef 0:f9b6112278fe 91 #define NONWILD_SERVER 1
DieterGraef 0:f9b6112278fe 92 #define NONWILD_CLIENT 2
DieterGraef 0:f9b6112278fe 93
DieterGraef 0:f9b6112278fe 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
DieterGraef 0:f9b6112278fe 95 #endif /* UNUSED */
DieterGraef 0:f9b6112278fe 96
DieterGraef 0:f9b6112278fe 97 #if PAP_SUPPORT || CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 98 /* The name by which the peer authenticated itself to us. */
DieterGraef 0:f9b6112278fe 99 static char peer_authname[MAXNAMELEN];
DieterGraef 0:f9b6112278fe 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 101
DieterGraef 0:f9b6112278fe 102 /* Records which authentication operations haven't completed yet. */
DieterGraef 0:f9b6112278fe 103 static int auth_pending[NUM_PPP];
DieterGraef 0:f9b6112278fe 104
DieterGraef 0:f9b6112278fe 105 /* Set if we have successfully called plogin() */
DieterGraef 0:f9b6112278fe 106 static int logged_in;
DieterGraef 0:f9b6112278fe 107
DieterGraef 0:f9b6112278fe 108 /* Set if we have run the /etc/ppp/auth-up script. */
DieterGraef 0:f9b6112278fe 109 static int did_authup; /* @todo, we don't need this in lwip*/
DieterGraef 0:f9b6112278fe 110
DieterGraef 0:f9b6112278fe 111 /* List of addresses which the peer may use. */
DieterGraef 0:f9b6112278fe 112 static struct wordlist *addresses[NUM_PPP];
DieterGraef 0:f9b6112278fe 113
DieterGraef 0:f9b6112278fe 114 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 115 /* Wordlist giving addresses which the peer may use
DieterGraef 0:f9b6112278fe 116 without authenticating itself. */
DieterGraef 0:f9b6112278fe 117 static struct wordlist *noauth_addrs;
DieterGraef 0:f9b6112278fe 118
DieterGraef 0:f9b6112278fe 119 /* Extra options to apply, from the secrets file entry for the peer. */
DieterGraef 0:f9b6112278fe 120 static struct wordlist *extra_options;
DieterGraef 0:f9b6112278fe 121 #endif /* UNUSED */
DieterGraef 0:f9b6112278fe 122
DieterGraef 0:f9b6112278fe 123 /* Number of network protocols which we have opened. */
DieterGraef 0:f9b6112278fe 124 static int num_np_open;
DieterGraef 0:f9b6112278fe 125
DieterGraef 0:f9b6112278fe 126 /* Number of network protocols which have come up. */
DieterGraef 0:f9b6112278fe 127 static int num_np_up;
DieterGraef 0:f9b6112278fe 128
DieterGraef 0:f9b6112278fe 129 #if PAP_SUPPORT || CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
DieterGraef 0:f9b6112278fe 131 static int passwd_from_file;
DieterGraef 0:f9b6112278fe 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 133
DieterGraef 0:f9b6112278fe 134 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 135 /* Set if we require authentication only because we have a default route. */
DieterGraef 0:f9b6112278fe 136 static bool default_auth;
DieterGraef 0:f9b6112278fe 137
DieterGraef 0:f9b6112278fe 138 /* Hook to enable a plugin to control the idle time limit */
DieterGraef 0:f9b6112278fe 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
DieterGraef 0:f9b6112278fe 140
DieterGraef 0:f9b6112278fe 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
DieterGraef 0:f9b6112278fe 142 int (*pap_check_hook) __P((void)) = NULL;
DieterGraef 0:f9b6112278fe 143
DieterGraef 0:f9b6112278fe 144 /* Hook for a plugin to check the PAP user and password */
DieterGraef 0:f9b6112278fe 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
DieterGraef 0:f9b6112278fe 146 struct wordlist **paddrs,
DieterGraef 0:f9b6112278fe 147 struct wordlist **popts)) = NULL;
DieterGraef 0:f9b6112278fe 148
DieterGraef 0:f9b6112278fe 149 /* Hook for a plugin to know about the PAP user logout */
DieterGraef 0:f9b6112278fe 150 void (*pap_logout_hook) __P((void)) = NULL;
DieterGraef 0:f9b6112278fe 151
DieterGraef 0:f9b6112278fe 152 /* Hook for a plugin to get the PAP password for authenticating us */
DieterGraef 0:f9b6112278fe 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
DieterGraef 0:f9b6112278fe 154
DieterGraef 0:f9b6112278fe 155 /*
DieterGraef 0:f9b6112278fe 156 * This is used to ensure that we don't start an auth-up/down
DieterGraef 0:f9b6112278fe 157 * script while one is already running.
DieterGraef 0:f9b6112278fe 158 */
DieterGraef 0:f9b6112278fe 159 enum script_state {
DieterGraef 0:f9b6112278fe 160 s_down,
DieterGraef 0:f9b6112278fe 161 s_up
DieterGraef 0:f9b6112278fe 162 };
DieterGraef 0:f9b6112278fe 163
DieterGraef 0:f9b6112278fe 164 static enum script_state auth_state = s_down;
DieterGraef 0:f9b6112278fe 165 static enum script_state auth_script_state = s_down;
DieterGraef 0:f9b6112278fe 166 static pid_t auth_script_pid = 0;
DieterGraef 0:f9b6112278fe 167
DieterGraef 0:f9b6112278fe 168 /*
DieterGraef 0:f9b6112278fe 169 * Option variables.
DieterGraef 0:f9b6112278fe 170 * lwip: some of these are present in the ppp_settings structure
DieterGraef 0:f9b6112278fe 171 */
DieterGraef 0:f9b6112278fe 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
DieterGraef 0:f9b6112278fe 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
DieterGraef 0:f9b6112278fe 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
DieterGraef 0:f9b6112278fe 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
DieterGraef 0:f9b6112278fe 176 bool usehostname = 0; /* Use hostname for our_name */
DieterGraef 0:f9b6112278fe 177 bool auth_required = 0; /* Always require authentication from peer */
DieterGraef 0:f9b6112278fe 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
DieterGraef 0:f9b6112278fe 179 bool explicit_remote = 0; /* User specified explicit remote name */
DieterGraef 0:f9b6112278fe 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
DieterGraef 0:f9b6112278fe 181
DieterGraef 0:f9b6112278fe 182 #endif /* UNUSED */
DieterGraef 0:f9b6112278fe 183
DieterGraef 0:f9b6112278fe 184 /* Bits in auth_pending[] */
DieterGraef 0:f9b6112278fe 185 #define PAP_WITHPEER 1
DieterGraef 0:f9b6112278fe 186 #define PAP_PEER 2
DieterGraef 0:f9b6112278fe 187 #define CHAP_WITHPEER 4
DieterGraef 0:f9b6112278fe 188 #define CHAP_PEER 8
DieterGraef 0:f9b6112278fe 189
DieterGraef 0:f9b6112278fe 190 /* @todo, move this somewhere */
DieterGraef 0:f9b6112278fe 191 /* Used for storing a sequence of words. Usually malloced. */
DieterGraef 0:f9b6112278fe 192 struct wordlist {
DieterGraef 0:f9b6112278fe 193 struct wordlist *next;
DieterGraef 0:f9b6112278fe 194 char word[1];
DieterGraef 0:f9b6112278fe 195 };
DieterGraef 0:f9b6112278fe 196
DieterGraef 0:f9b6112278fe 197
DieterGraef 0:f9b6112278fe 198 extern char *crypt (const char *, const char *);
DieterGraef 0:f9b6112278fe 199
DieterGraef 0:f9b6112278fe 200 /* Prototypes for procedures local to this file. */
DieterGraef 0:f9b6112278fe 201
DieterGraef 0:f9b6112278fe 202 static void network_phase (int);
DieterGraef 0:f9b6112278fe 203 static void check_idle (void *);
DieterGraef 0:f9b6112278fe 204 static void connect_time_expired (void *);
DieterGraef 0:f9b6112278fe 205 #if 0
DieterGraef 0:f9b6112278fe 206 static int plogin (char *, char *, char **, int *);
DieterGraef 0:f9b6112278fe 207 #endif
DieterGraef 0:f9b6112278fe 208 static void plogout (void);
DieterGraef 0:f9b6112278fe 209 static int null_login (int);
DieterGraef 0:f9b6112278fe 210 static int get_pap_passwd (int, char *, char *);
DieterGraef 0:f9b6112278fe 211 static int have_pap_secret (void);
DieterGraef 0:f9b6112278fe 212 static int have_chap_secret (char *, char *, u32_t);
DieterGraef 0:f9b6112278fe 213 static int ip_addr_check (u32_t, struct wordlist *);
DieterGraef 0:f9b6112278fe 214
DieterGraef 0:f9b6112278fe 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 216 static int scan_authfile (FILE *, char *, char *, char *,
DieterGraef 0:f9b6112278fe 217 struct wordlist **, struct wordlist **,
DieterGraef 0:f9b6112278fe 218 char *);
DieterGraef 0:f9b6112278fe 219 static void free_wordlist (struct wordlist *);
DieterGraef 0:f9b6112278fe 220 static void auth_script (char *);
DieterGraef 0:f9b6112278fe 221 static void auth_script_done (void *);
DieterGraef 0:f9b6112278fe 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
DieterGraef 0:f9b6112278fe 223 static int some_ip_ok (struct wordlist *);
DieterGraef 0:f9b6112278fe 224 static int setupapfile (char **);
DieterGraef 0:f9b6112278fe 225 static int privgroup (char **);
DieterGraef 0:f9b6112278fe 226 static int set_noauth_addr (char **);
DieterGraef 0:f9b6112278fe 227 static void check_access (FILE *, char *);
DieterGraef 0:f9b6112278fe 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 229
DieterGraef 0:f9b6112278fe 230 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 231 /*
DieterGraef 0:f9b6112278fe 232 * Authentication-related options.
DieterGraef 0:f9b6112278fe 233 */
DieterGraef 0:f9b6112278fe 234 option_t auth_options[] = {
DieterGraef 0:f9b6112278fe 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
DieterGraef 0:f9b6112278fe 236 "Require PAP authentication from peer", 1, &auth_required },
DieterGraef 0:f9b6112278fe 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
DieterGraef 0:f9b6112278fe 238 "Require PAP authentication from peer", 1, &auth_required },
DieterGraef 0:f9b6112278fe 239 { "refuse-pap", o_bool, &refuse_pap,
DieterGraef 0:f9b6112278fe 240 "Don't agree to auth to peer with PAP", 1 },
DieterGraef 0:f9b6112278fe 241 { "-pap", o_bool, &refuse_pap,
DieterGraef 0:f9b6112278fe 242 "Don't allow PAP authentication with peer", 1 },
DieterGraef 0:f9b6112278fe 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
DieterGraef 0:f9b6112278fe 244 "Require CHAP authentication from peer", 1, &auth_required },
DieterGraef 0:f9b6112278fe 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
DieterGraef 0:f9b6112278fe 246 "Require CHAP authentication from peer", 1, &auth_required },
DieterGraef 0:f9b6112278fe 247 { "refuse-chap", o_bool, &refuse_chap,
DieterGraef 0:f9b6112278fe 248 "Don't agree to auth to peer with CHAP", 1 },
DieterGraef 0:f9b6112278fe 249 { "-chap", o_bool, &refuse_chap,
DieterGraef 0:f9b6112278fe 250 "Don't allow CHAP authentication with peer", 1 },
DieterGraef 0:f9b6112278fe 251 { "name", o_string, our_name,
DieterGraef 0:f9b6112278fe 252 "Set local name for authentication",
DieterGraef 0:f9b6112278fe 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
DieterGraef 0:f9b6112278fe 254 { "user", o_string, user,
DieterGraef 0:f9b6112278fe 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
DieterGraef 0:f9b6112278fe 256 { "usehostname", o_bool, &usehostname,
DieterGraef 0:f9b6112278fe 257 "Must use hostname for authentication", 1 },
DieterGraef 0:f9b6112278fe 258 { "remotename", o_string, remote_name,
DieterGraef 0:f9b6112278fe 259 "Set remote name for authentication", OPT_STATIC,
DieterGraef 0:f9b6112278fe 260 &explicit_remote, MAXNAMELEN },
DieterGraef 0:f9b6112278fe 261 { "auth", o_bool, &auth_required,
DieterGraef 0:f9b6112278fe 262 "Require authentication from peer", 1 },
DieterGraef 0:f9b6112278fe 263 { "noauth", o_bool, &auth_required,
DieterGraef 0:f9b6112278fe 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
DieterGraef 0:f9b6112278fe 265 { "login", o_bool, &uselogin,
DieterGraef 0:f9b6112278fe 266 "Use system password database for PAP", 1 },
DieterGraef 0:f9b6112278fe 267 { "papcrypt", o_bool, &cryptpap,
DieterGraef 0:f9b6112278fe 268 "PAP passwords are encrypted", 1 },
DieterGraef 0:f9b6112278fe 269 { "+ua", o_special, (void *)setupapfile,
DieterGraef 0:f9b6112278fe 270 "Get PAP user and password from file" },
DieterGraef 0:f9b6112278fe 271 { "password", o_string, passwd,
DieterGraef 0:f9b6112278fe 272 "Password for authenticating us to the peer", OPT_STATIC,
DieterGraef 0:f9b6112278fe 273 NULL, MAXSECRETLEN },
DieterGraef 0:f9b6112278fe 274 { "privgroup", o_special, (void *)privgroup,
DieterGraef 0:f9b6112278fe 275 "Allow group members to use privileged options", OPT_PRIV },
DieterGraef 0:f9b6112278fe 276 { "allow-ip", o_special, (void *)set_noauth_addr,
DieterGraef 0:f9b6112278fe 277 "Set IP address(es) which can be used without authentication",
DieterGraef 0:f9b6112278fe 278 OPT_PRIV },
DieterGraef 0:f9b6112278fe 279 { NULL }
DieterGraef 0:f9b6112278fe 280 };
DieterGraef 0:f9b6112278fe 281 #endif /* UNUSED */
DieterGraef 0:f9b6112278fe 282 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 283 /*
DieterGraef 0:f9b6112278fe 284 * setupapfile - specifies UPAP info for authenticating with peer.
DieterGraef 0:f9b6112278fe 285 */
DieterGraef 0:f9b6112278fe 286 static int
DieterGraef 0:f9b6112278fe 287 setupapfile(char **argv)
DieterGraef 0:f9b6112278fe 288 {
DieterGraef 0:f9b6112278fe 289 FILE * ufile;
DieterGraef 0:f9b6112278fe 290 int l;
DieterGraef 0:f9b6112278fe 291
DieterGraef 0:f9b6112278fe 292 lcp_allowoptions[0].neg_upap = 1;
DieterGraef 0:f9b6112278fe 293
DieterGraef 0:f9b6112278fe 294 /* open user info file */
DieterGraef 0:f9b6112278fe 295 seteuid(getuid());
DieterGraef 0:f9b6112278fe 296 ufile = fopen(*argv, "r");
DieterGraef 0:f9b6112278fe 297 seteuid(0);
DieterGraef 0:f9b6112278fe 298 if (ufile == NULL) {
DieterGraef 0:f9b6112278fe 299 option_error("unable to open user login data file %s", *argv);
DieterGraef 0:f9b6112278fe 300 return 0;
DieterGraef 0:f9b6112278fe 301 }
DieterGraef 0:f9b6112278fe 302 check_access(ufile, *argv);
DieterGraef 0:f9b6112278fe 303
DieterGraef 0:f9b6112278fe 304 /* get username */
DieterGraef 0:f9b6112278fe 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
DieterGraef 0:f9b6112278fe 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
DieterGraef 0:f9b6112278fe 307 option_error("unable to read user login data file %s", *argv);
DieterGraef 0:f9b6112278fe 308 return 0;
DieterGraef 0:f9b6112278fe 309 }
DieterGraef 0:f9b6112278fe 310 fclose(ufile);
DieterGraef 0:f9b6112278fe 311
DieterGraef 0:f9b6112278fe 312 /* get rid of newlines */
DieterGraef 0:f9b6112278fe 313 l = strlen(user);
DieterGraef 0:f9b6112278fe 314 if (l > 0 && user[l-1] == '\n')
DieterGraef 0:f9b6112278fe 315 user[l-1] = 0;
DieterGraef 0:f9b6112278fe 316 l = strlen(passwd);
DieterGraef 0:f9b6112278fe 317 if (l > 0 && passwd[l-1] == '\n')
DieterGraef 0:f9b6112278fe 318 passwd[l-1] = 0;
DieterGraef 0:f9b6112278fe 319
DieterGraef 0:f9b6112278fe 320 return (1);
DieterGraef 0:f9b6112278fe 321 }
DieterGraef 0:f9b6112278fe 322 #endif /* UNUSED */
DieterGraef 0:f9b6112278fe 323
DieterGraef 0:f9b6112278fe 324 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 325 /*
DieterGraef 0:f9b6112278fe 326 * privgroup - allow members of the group to have privileged access.
DieterGraef 0:f9b6112278fe 327 */
DieterGraef 0:f9b6112278fe 328 static int
DieterGraef 0:f9b6112278fe 329 privgroup(char **argv)
DieterGraef 0:f9b6112278fe 330 {
DieterGraef 0:f9b6112278fe 331 struct group *g;
DieterGraef 0:f9b6112278fe 332 int i;
DieterGraef 0:f9b6112278fe 333
DieterGraef 0:f9b6112278fe 334 g = getgrnam(*argv);
DieterGraef 0:f9b6112278fe 335 if (g == 0) {
DieterGraef 0:f9b6112278fe 336 option_error("group %s is unknown", *argv);
DieterGraef 0:f9b6112278fe 337 return 0;
DieterGraef 0:f9b6112278fe 338 }
DieterGraef 0:f9b6112278fe 339 for (i = 0; i < ngroups; ++i) {
DieterGraef 0:f9b6112278fe 340 if (groups[i] == g->gr_gid) {
DieterGraef 0:f9b6112278fe 341 privileged = 1;
DieterGraef 0:f9b6112278fe 342 break;
DieterGraef 0:f9b6112278fe 343 }
DieterGraef 0:f9b6112278fe 344 }
DieterGraef 0:f9b6112278fe 345 return 1;
DieterGraef 0:f9b6112278fe 346 }
DieterGraef 0:f9b6112278fe 347 #endif
DieterGraef 0:f9b6112278fe 348
DieterGraef 0:f9b6112278fe 349 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 350 /*
DieterGraef 0:f9b6112278fe 351 * set_noauth_addr - set address(es) that can be used without authentication.
DieterGraef 0:f9b6112278fe 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
DieterGraef 0:f9b6112278fe 353 */
DieterGraef 0:f9b6112278fe 354 static int
DieterGraef 0:f9b6112278fe 355 set_noauth_addr(char **argv)
DieterGraef 0:f9b6112278fe 356 {
DieterGraef 0:f9b6112278fe 357 char *addr = *argv;
DieterGraef 0:f9b6112278fe 358 int l = strlen(addr);
DieterGraef 0:f9b6112278fe 359 struct wordlist *wp;
DieterGraef 0:f9b6112278fe 360
DieterGraef 0:f9b6112278fe 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
DieterGraef 0:f9b6112278fe 362 if (wp == NULL)
DieterGraef 0:f9b6112278fe 363 novm("allow-ip argument");
DieterGraef 0:f9b6112278fe 364 wp->word = (char *) (wp + 1);
DieterGraef 0:f9b6112278fe 365 wp->next = noauth_addrs;
DieterGraef 0:f9b6112278fe 366 BCOPY(addr, wp->word, l);
DieterGraef 0:f9b6112278fe 367 noauth_addrs = wp;
DieterGraef 0:f9b6112278fe 368 return 1;
DieterGraef 0:f9b6112278fe 369 }
DieterGraef 0:f9b6112278fe 370 #endif /* UNUSED */
DieterGraef 0:f9b6112278fe 371
DieterGraef 0:f9b6112278fe 372 /*
DieterGraef 0:f9b6112278fe 373 * An Open on LCP has requested a change from Dead to Establish phase.
DieterGraef 0:f9b6112278fe 374 * Do what's necessary to bring the physical layer up.
DieterGraef 0:f9b6112278fe 375 */
DieterGraef 0:f9b6112278fe 376 void
DieterGraef 0:f9b6112278fe 377 link_required(int unit)
DieterGraef 0:f9b6112278fe 378 {
DieterGraef 0:f9b6112278fe 379 LWIP_UNUSED_ARG(unit);
DieterGraef 0:f9b6112278fe 380
DieterGraef 0:f9b6112278fe 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
DieterGraef 0:f9b6112278fe 382 }
DieterGraef 0:f9b6112278fe 383
DieterGraef 0:f9b6112278fe 384 /*
DieterGraef 0:f9b6112278fe 385 * LCP has terminated the link; go to the Dead phase and take the
DieterGraef 0:f9b6112278fe 386 * physical layer down.
DieterGraef 0:f9b6112278fe 387 */
DieterGraef 0:f9b6112278fe 388 void
DieterGraef 0:f9b6112278fe 389 link_terminated(int unit)
DieterGraef 0:f9b6112278fe 390 {
DieterGraef 0:f9b6112278fe 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
DieterGraef 0:f9b6112278fe 392 if (lcp_phase[unit] == PHASE_DEAD) {
DieterGraef 0:f9b6112278fe 393 return;
DieterGraef 0:f9b6112278fe 394 }
DieterGraef 0:f9b6112278fe 395 if (logged_in) {
DieterGraef 0:f9b6112278fe 396 plogout();
DieterGraef 0:f9b6112278fe 397 }
DieterGraef 0:f9b6112278fe 398 lcp_phase[unit] = PHASE_DEAD;
DieterGraef 0:f9b6112278fe 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
DieterGraef 0:f9b6112278fe 400 pppLinkTerminated(unit);
DieterGraef 0:f9b6112278fe 401 }
DieterGraef 0:f9b6112278fe 402
DieterGraef 0:f9b6112278fe 403 /*
DieterGraef 0:f9b6112278fe 404 * LCP has gone down; it will either die or try to re-establish.
DieterGraef 0:f9b6112278fe 405 */
DieterGraef 0:f9b6112278fe 406 void
DieterGraef 0:f9b6112278fe 407 link_down(int unit)
DieterGraef 0:f9b6112278fe 408 {
DieterGraef 0:f9b6112278fe 409 int i;
DieterGraef 0:f9b6112278fe 410 struct protent *protp;
DieterGraef 0:f9b6112278fe 411
DieterGraef 0:f9b6112278fe 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
DieterGraef 0:f9b6112278fe 413
DieterGraef 0:f9b6112278fe 414 if (did_authup) {
DieterGraef 0:f9b6112278fe 415 /* XXX Do link down processing. */
DieterGraef 0:f9b6112278fe 416 did_authup = 0;
DieterGraef 0:f9b6112278fe 417 }
DieterGraef 0:f9b6112278fe 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
DieterGraef 0:f9b6112278fe 419 if (!protp->enabled_flag) {
DieterGraef 0:f9b6112278fe 420 continue;
DieterGraef 0:f9b6112278fe 421 }
DieterGraef 0:f9b6112278fe 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
DieterGraef 0:f9b6112278fe 423 (*protp->lowerdown)(unit);
DieterGraef 0:f9b6112278fe 424 }
DieterGraef 0:f9b6112278fe 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
DieterGraef 0:f9b6112278fe 426 (*protp->close)(unit, "LCP down");
DieterGraef 0:f9b6112278fe 427 }
DieterGraef 0:f9b6112278fe 428 }
DieterGraef 0:f9b6112278fe 429 num_np_open = 0; /* number of network protocols we have opened */
DieterGraef 0:f9b6112278fe 430 num_np_up = 0; /* Number of network protocols which have come up */
DieterGraef 0:f9b6112278fe 431
DieterGraef 0:f9b6112278fe 432 if (lcp_phase[unit] != PHASE_DEAD) {
DieterGraef 0:f9b6112278fe 433 lcp_phase[unit] = PHASE_TERMINATE;
DieterGraef 0:f9b6112278fe 434 }
DieterGraef 0:f9b6112278fe 435 pppLinkDown(unit);
DieterGraef 0:f9b6112278fe 436 }
DieterGraef 0:f9b6112278fe 437
DieterGraef 0:f9b6112278fe 438 /*
DieterGraef 0:f9b6112278fe 439 * The link is established.
DieterGraef 0:f9b6112278fe 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
DieterGraef 0:f9b6112278fe 441 */
DieterGraef 0:f9b6112278fe 442 void
DieterGraef 0:f9b6112278fe 443 link_established(int unit)
DieterGraef 0:f9b6112278fe 444 {
DieterGraef 0:f9b6112278fe 445 int auth;
DieterGraef 0:f9b6112278fe 446 int i;
DieterGraef 0:f9b6112278fe 447 struct protent *protp;
DieterGraef 0:f9b6112278fe 448 lcp_options *wo = &lcp_wantoptions[unit];
DieterGraef 0:f9b6112278fe 449 lcp_options *go = &lcp_gotoptions[unit];
DieterGraef 0:f9b6112278fe 450 #if PAP_SUPPORT || CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 451 lcp_options *ho = &lcp_hisoptions[unit];
DieterGraef 0:f9b6112278fe 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 453
DieterGraef 0:f9b6112278fe 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
DieterGraef 0:f9b6112278fe 455 /*
DieterGraef 0:f9b6112278fe 456 * Tell higher-level protocols that LCP is up.
DieterGraef 0:f9b6112278fe 457 */
DieterGraef 0:f9b6112278fe 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
DieterGraef 0:f9b6112278fe 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
DieterGraef 0:f9b6112278fe 460 (*protp->lowerup)(unit);
DieterGraef 0:f9b6112278fe 461 }
DieterGraef 0:f9b6112278fe 462 }
DieterGraef 0:f9b6112278fe 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
DieterGraef 0:f9b6112278fe 464 /*
DieterGraef 0:f9b6112278fe 465 * We wanted the peer to authenticate itself, and it refused:
DieterGraef 0:f9b6112278fe 466 * treat it as though it authenticated with PAP using a username
DieterGraef 0:f9b6112278fe 467 * of "" and a password of "". If that's not OK, boot it out.
DieterGraef 0:f9b6112278fe 468 */
DieterGraef 0:f9b6112278fe 469 if (!wo->neg_upap || !null_login(unit)) {
DieterGraef 0:f9b6112278fe 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
DieterGraef 0:f9b6112278fe 471 lcp_close(unit, "peer refused to authenticate");
DieterGraef 0:f9b6112278fe 472 return;
DieterGraef 0:f9b6112278fe 473 }
DieterGraef 0:f9b6112278fe 474 }
DieterGraef 0:f9b6112278fe 475
DieterGraef 0:f9b6112278fe 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
DieterGraef 0:f9b6112278fe 477 auth = 0;
DieterGraef 0:f9b6112278fe 478 #if CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 479 if (go->neg_chap) {
DieterGraef 0:f9b6112278fe 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
DieterGraef 0:f9b6112278fe 481 auth |= CHAP_PEER;
DieterGraef 0:f9b6112278fe 482 }
DieterGraef 0:f9b6112278fe 483 #endif /* CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 484 #if PAP_SUPPORT && CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 485 else
DieterGraef 0:f9b6112278fe 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 487 #if PAP_SUPPORT
DieterGraef 0:f9b6112278fe 488 if (go->neg_upap) {
DieterGraef 0:f9b6112278fe 489 upap_authpeer(unit);
DieterGraef 0:f9b6112278fe 490 auth |= PAP_PEER;
DieterGraef 0:f9b6112278fe 491 }
DieterGraef 0:f9b6112278fe 492 #endif /* PAP_SUPPORT */
DieterGraef 0:f9b6112278fe 493 #if CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 494 if (ho->neg_chap) {
DieterGraef 0:f9b6112278fe 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
DieterGraef 0:f9b6112278fe 496 auth |= CHAP_WITHPEER;
DieterGraef 0:f9b6112278fe 497 }
DieterGraef 0:f9b6112278fe 498 #endif /* CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 499 #if PAP_SUPPORT && CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 500 else
DieterGraef 0:f9b6112278fe 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 502 #if PAP_SUPPORT
DieterGraef 0:f9b6112278fe 503 if (ho->neg_upap) {
DieterGraef 0:f9b6112278fe 504 if (ppp_settings.passwd[0] == 0) {
DieterGraef 0:f9b6112278fe 505 passwd_from_file = 1;
DieterGraef 0:f9b6112278fe 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
DieterGraef 0:f9b6112278fe 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
DieterGraef 0:f9b6112278fe 508 }
DieterGraef 0:f9b6112278fe 509 }
DieterGraef 0:f9b6112278fe 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
DieterGraef 0:f9b6112278fe 511 auth |= PAP_WITHPEER;
DieterGraef 0:f9b6112278fe 512 }
DieterGraef 0:f9b6112278fe 513 #endif /* PAP_SUPPORT */
DieterGraef 0:f9b6112278fe 514 auth_pending[unit] = auth;
DieterGraef 0:f9b6112278fe 515
DieterGraef 0:f9b6112278fe 516 if (!auth) {
DieterGraef 0:f9b6112278fe 517 network_phase(unit);
DieterGraef 0:f9b6112278fe 518 }
DieterGraef 0:f9b6112278fe 519 }
DieterGraef 0:f9b6112278fe 520
DieterGraef 0:f9b6112278fe 521 /*
DieterGraef 0:f9b6112278fe 522 * Proceed to the network phase.
DieterGraef 0:f9b6112278fe 523 */
DieterGraef 0:f9b6112278fe 524 static void
DieterGraef 0:f9b6112278fe 525 network_phase(int unit)
DieterGraef 0:f9b6112278fe 526 {
DieterGraef 0:f9b6112278fe 527 int i;
DieterGraef 0:f9b6112278fe 528 struct protent *protp;
DieterGraef 0:f9b6112278fe 529 lcp_options *go = &lcp_gotoptions[unit];
DieterGraef 0:f9b6112278fe 530
DieterGraef 0:f9b6112278fe 531 /*
DieterGraef 0:f9b6112278fe 532 * If the peer had to authenticate, run the auth-up script now.
DieterGraef 0:f9b6112278fe 533 */
DieterGraef 0:f9b6112278fe 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
DieterGraef 0:f9b6112278fe 535 /* XXX Do setup for peer authentication. */
DieterGraef 0:f9b6112278fe 536 did_authup = 1;
DieterGraef 0:f9b6112278fe 537 }
DieterGraef 0:f9b6112278fe 538
DieterGraef 0:f9b6112278fe 539 #if CBCP_SUPPORT
DieterGraef 0:f9b6112278fe 540 /*
DieterGraef 0:f9b6112278fe 541 * If we negotiated callback, do it now.
DieterGraef 0:f9b6112278fe 542 */
DieterGraef 0:f9b6112278fe 543 if (go->neg_cbcp) {
DieterGraef 0:f9b6112278fe 544 lcp_phase[unit] = PHASE_CALLBACK;
DieterGraef 0:f9b6112278fe 545 (*cbcp_protent.open)(unit);
DieterGraef 0:f9b6112278fe 546 return;
DieterGraef 0:f9b6112278fe 547 }
DieterGraef 0:f9b6112278fe 548 #endif /* CBCP_SUPPORT */
DieterGraef 0:f9b6112278fe 549
DieterGraef 0:f9b6112278fe 550 lcp_phase[unit] = PHASE_NETWORK;
DieterGraef 0:f9b6112278fe 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
DieterGraef 0:f9b6112278fe 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
DieterGraef 0:f9b6112278fe 553 (*protp->open)(unit);
DieterGraef 0:f9b6112278fe 554 if (protp->protocol != PPP_CCP) {
DieterGraef 0:f9b6112278fe 555 ++num_np_open;
DieterGraef 0:f9b6112278fe 556 }
DieterGraef 0:f9b6112278fe 557 }
DieterGraef 0:f9b6112278fe 558 }
DieterGraef 0:f9b6112278fe 559
DieterGraef 0:f9b6112278fe 560 if (num_np_open == 0) {
DieterGraef 0:f9b6112278fe 561 /* nothing to do */
DieterGraef 0:f9b6112278fe 562 lcp_close(0, "No network protocols running");
DieterGraef 0:f9b6112278fe 563 }
DieterGraef 0:f9b6112278fe 564 }
DieterGraef 0:f9b6112278fe 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
DieterGraef 0:f9b6112278fe 566
DieterGraef 0:f9b6112278fe 567 /*
DieterGraef 0:f9b6112278fe 568 * The peer has failed to authenticate himself using `protocol'.
DieterGraef 0:f9b6112278fe 569 */
DieterGraef 0:f9b6112278fe 570 void
DieterGraef 0:f9b6112278fe 571 auth_peer_fail(int unit, u16_t protocol)
DieterGraef 0:f9b6112278fe 572 {
DieterGraef 0:f9b6112278fe 573 LWIP_UNUSED_ARG(protocol);
DieterGraef 0:f9b6112278fe 574
DieterGraef 0:f9b6112278fe 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
DieterGraef 0:f9b6112278fe 576 /*
DieterGraef 0:f9b6112278fe 577 * Authentication failure: take the link down
DieterGraef 0:f9b6112278fe 578 */
DieterGraef 0:f9b6112278fe 579 lcp_close(unit, "Authentication failed");
DieterGraef 0:f9b6112278fe 580 }
DieterGraef 0:f9b6112278fe 581
DieterGraef 0:f9b6112278fe 582
DieterGraef 0:f9b6112278fe 583 #if PAP_SUPPORT || CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 584 /*
DieterGraef 0:f9b6112278fe 585 * The peer has been successfully authenticated using `protocol'.
DieterGraef 0:f9b6112278fe 586 */
DieterGraef 0:f9b6112278fe 587 void
DieterGraef 0:f9b6112278fe 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
DieterGraef 0:f9b6112278fe 589 {
DieterGraef 0:f9b6112278fe 590 int pbit;
DieterGraef 0:f9b6112278fe 591
DieterGraef 0:f9b6112278fe 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
DieterGraef 0:f9b6112278fe 593 switch (protocol) {
DieterGraef 0:f9b6112278fe 594 case PPP_CHAP:
DieterGraef 0:f9b6112278fe 595 pbit = CHAP_PEER;
DieterGraef 0:f9b6112278fe 596 break;
DieterGraef 0:f9b6112278fe 597 case PPP_PAP:
DieterGraef 0:f9b6112278fe 598 pbit = PAP_PEER;
DieterGraef 0:f9b6112278fe 599 break;
DieterGraef 0:f9b6112278fe 600 default:
DieterGraef 0:f9b6112278fe 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
DieterGraef 0:f9b6112278fe 602 return;
DieterGraef 0:f9b6112278fe 603 }
DieterGraef 0:f9b6112278fe 604
DieterGraef 0:f9b6112278fe 605 /*
DieterGraef 0:f9b6112278fe 606 * Save the authenticated name of the peer for later.
DieterGraef 0:f9b6112278fe 607 */
DieterGraef 0:f9b6112278fe 608 if (namelen > (int)sizeof(peer_authname) - 1) {
DieterGraef 0:f9b6112278fe 609 namelen = sizeof(peer_authname) - 1;
DieterGraef 0:f9b6112278fe 610 }
DieterGraef 0:f9b6112278fe 611 BCOPY(name, peer_authname, namelen);
DieterGraef 0:f9b6112278fe 612 peer_authname[namelen] = 0;
DieterGraef 0:f9b6112278fe 613
DieterGraef 0:f9b6112278fe 614 /*
DieterGraef 0:f9b6112278fe 615 * If there is no more authentication still to be done,
DieterGraef 0:f9b6112278fe 616 * proceed to the network (or callback) phase.
DieterGraef 0:f9b6112278fe 617 */
DieterGraef 0:f9b6112278fe 618 if ((auth_pending[unit] &= ~pbit) == 0) {
DieterGraef 0:f9b6112278fe 619 network_phase(unit);
DieterGraef 0:f9b6112278fe 620 }
DieterGraef 0:f9b6112278fe 621 }
DieterGraef 0:f9b6112278fe 622
DieterGraef 0:f9b6112278fe 623 /*
DieterGraef 0:f9b6112278fe 624 * We have failed to authenticate ourselves to the peer using `protocol'.
DieterGraef 0:f9b6112278fe 625 */
DieterGraef 0:f9b6112278fe 626 void
DieterGraef 0:f9b6112278fe 627 auth_withpeer_fail(int unit, u16_t protocol)
DieterGraef 0:f9b6112278fe 628 {
DieterGraef 0:f9b6112278fe 629 int errCode = PPPERR_AUTHFAIL;
DieterGraef 0:f9b6112278fe 630
DieterGraef 0:f9b6112278fe 631 LWIP_UNUSED_ARG(protocol);
DieterGraef 0:f9b6112278fe 632
DieterGraef 0:f9b6112278fe 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
DieterGraef 0:f9b6112278fe 634 if (passwd_from_file) {
DieterGraef 0:f9b6112278fe 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
DieterGraef 0:f9b6112278fe 636 }
DieterGraef 0:f9b6112278fe 637
DieterGraef 0:f9b6112278fe 638 /*
DieterGraef 0:f9b6112278fe 639 * We've failed to authenticate ourselves to our peer.
DieterGraef 0:f9b6112278fe 640 * He'll probably take the link down, and there's not much
DieterGraef 0:f9b6112278fe 641 * we can do except wait for that.
DieterGraef 0:f9b6112278fe 642 */
DieterGraef 0:f9b6112278fe 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
DieterGraef 0:f9b6112278fe 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
DieterGraef 0:f9b6112278fe 645 }
DieterGraef 0:f9b6112278fe 646
DieterGraef 0:f9b6112278fe 647 /*
DieterGraef 0:f9b6112278fe 648 * We have successfully authenticated ourselves with the peer using `protocol'.
DieterGraef 0:f9b6112278fe 649 */
DieterGraef 0:f9b6112278fe 650 void
DieterGraef 0:f9b6112278fe 651 auth_withpeer_success(int unit, u16_t protocol)
DieterGraef 0:f9b6112278fe 652 {
DieterGraef 0:f9b6112278fe 653 int pbit;
DieterGraef 0:f9b6112278fe 654
DieterGraef 0:f9b6112278fe 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
DieterGraef 0:f9b6112278fe 656 switch (protocol) {
DieterGraef 0:f9b6112278fe 657 case PPP_CHAP:
DieterGraef 0:f9b6112278fe 658 pbit = CHAP_WITHPEER;
DieterGraef 0:f9b6112278fe 659 break;
DieterGraef 0:f9b6112278fe 660 case PPP_PAP:
DieterGraef 0:f9b6112278fe 661 if (passwd_from_file) {
DieterGraef 0:f9b6112278fe 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
DieterGraef 0:f9b6112278fe 663 }
DieterGraef 0:f9b6112278fe 664 pbit = PAP_WITHPEER;
DieterGraef 0:f9b6112278fe 665 break;
DieterGraef 0:f9b6112278fe 666 default:
DieterGraef 0:f9b6112278fe 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
DieterGraef 0:f9b6112278fe 668 pbit = 0;
DieterGraef 0:f9b6112278fe 669 }
DieterGraef 0:f9b6112278fe 670
DieterGraef 0:f9b6112278fe 671 /*
DieterGraef 0:f9b6112278fe 672 * If there is no more authentication still being done,
DieterGraef 0:f9b6112278fe 673 * proceed to the network (or callback) phase.
DieterGraef 0:f9b6112278fe 674 */
DieterGraef 0:f9b6112278fe 675 if ((auth_pending[unit] &= ~pbit) == 0) {
DieterGraef 0:f9b6112278fe 676 network_phase(unit);
DieterGraef 0:f9b6112278fe 677 }
DieterGraef 0:f9b6112278fe 678 }
DieterGraef 0:f9b6112278fe 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 680
DieterGraef 0:f9b6112278fe 681
DieterGraef 0:f9b6112278fe 682 /*
DieterGraef 0:f9b6112278fe 683 * np_up - a network protocol has come up.
DieterGraef 0:f9b6112278fe 684 */
DieterGraef 0:f9b6112278fe 685 void
DieterGraef 0:f9b6112278fe 686 np_up(int unit, u16_t proto)
DieterGraef 0:f9b6112278fe 687 {
DieterGraef 0:f9b6112278fe 688 LWIP_UNUSED_ARG(unit);
DieterGraef 0:f9b6112278fe 689 LWIP_UNUSED_ARG(proto);
DieterGraef 0:f9b6112278fe 690
DieterGraef 0:f9b6112278fe 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
DieterGraef 0:f9b6112278fe 692 if (num_np_up == 0) {
DieterGraef 0:f9b6112278fe 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
DieterGraef 0:f9b6112278fe 694 /*
DieterGraef 0:f9b6112278fe 695 * At this point we consider that the link has come up successfully.
DieterGraef 0:f9b6112278fe 696 */
DieterGraef 0:f9b6112278fe 697 if (ppp_settings.idle_time_limit > 0) {
DieterGraef 0:f9b6112278fe 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
DieterGraef 0:f9b6112278fe 699 }
DieterGraef 0:f9b6112278fe 700
DieterGraef 0:f9b6112278fe 701 /*
DieterGraef 0:f9b6112278fe 702 * Set a timeout to close the connection once the maximum
DieterGraef 0:f9b6112278fe 703 * connect time has expired.
DieterGraef 0:f9b6112278fe 704 */
DieterGraef 0:f9b6112278fe 705 if (ppp_settings.maxconnect > 0) {
DieterGraef 0:f9b6112278fe 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
DieterGraef 0:f9b6112278fe 707 }
DieterGraef 0:f9b6112278fe 708 }
DieterGraef 0:f9b6112278fe 709 ++num_np_up;
DieterGraef 0:f9b6112278fe 710 }
DieterGraef 0:f9b6112278fe 711
DieterGraef 0:f9b6112278fe 712 /*
DieterGraef 0:f9b6112278fe 713 * np_down - a network protocol has gone down.
DieterGraef 0:f9b6112278fe 714 */
DieterGraef 0:f9b6112278fe 715 void
DieterGraef 0:f9b6112278fe 716 np_down(int unit, u16_t proto)
DieterGraef 0:f9b6112278fe 717 {
DieterGraef 0:f9b6112278fe 718 LWIP_UNUSED_ARG(unit);
DieterGraef 0:f9b6112278fe 719 LWIP_UNUSED_ARG(proto);
DieterGraef 0:f9b6112278fe 720
DieterGraef 0:f9b6112278fe 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
DieterGraef 0:f9b6112278fe 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
DieterGraef 0:f9b6112278fe 723 UNTIMEOUT(check_idle, NULL);
DieterGraef 0:f9b6112278fe 724 }
DieterGraef 0:f9b6112278fe 725 }
DieterGraef 0:f9b6112278fe 726
DieterGraef 0:f9b6112278fe 727 /*
DieterGraef 0:f9b6112278fe 728 * np_finished - a network protocol has finished using the link.
DieterGraef 0:f9b6112278fe 729 */
DieterGraef 0:f9b6112278fe 730 void
DieterGraef 0:f9b6112278fe 731 np_finished(int unit, u16_t proto)
DieterGraef 0:f9b6112278fe 732 {
DieterGraef 0:f9b6112278fe 733 LWIP_UNUSED_ARG(unit);
DieterGraef 0:f9b6112278fe 734 LWIP_UNUSED_ARG(proto);
DieterGraef 0:f9b6112278fe 735
DieterGraef 0:f9b6112278fe 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
DieterGraef 0:f9b6112278fe 737 if (--num_np_open <= 0) {
DieterGraef 0:f9b6112278fe 738 /* no further use for the link: shut up shop. */
DieterGraef 0:f9b6112278fe 739 lcp_close(0, "No network protocols running");
DieterGraef 0:f9b6112278fe 740 }
DieterGraef 0:f9b6112278fe 741 }
DieterGraef 0:f9b6112278fe 742
DieterGraef 0:f9b6112278fe 743 /*
DieterGraef 0:f9b6112278fe 744 * check_idle - check whether the link has been idle for long
DieterGraef 0:f9b6112278fe 745 * enough that we can shut it down.
DieterGraef 0:f9b6112278fe 746 */
DieterGraef 0:f9b6112278fe 747 static void
DieterGraef 0:f9b6112278fe 748 check_idle(void *arg)
DieterGraef 0:f9b6112278fe 749 {
DieterGraef 0:f9b6112278fe 750 struct ppp_idle idle;
DieterGraef 0:f9b6112278fe 751 u_short itime;
DieterGraef 0:f9b6112278fe 752
DieterGraef 0:f9b6112278fe 753 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 754 if (!get_idle_time(0, &idle)) {
DieterGraef 0:f9b6112278fe 755 return;
DieterGraef 0:f9b6112278fe 756 }
DieterGraef 0:f9b6112278fe 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
DieterGraef 0:f9b6112278fe 758 if (itime >= ppp_settings.idle_time_limit) {
DieterGraef 0:f9b6112278fe 759 /* link is idle: shut it down. */
DieterGraef 0:f9b6112278fe 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
DieterGraef 0:f9b6112278fe 761 lcp_close(0, "Link inactive");
DieterGraef 0:f9b6112278fe 762 } else {
DieterGraef 0:f9b6112278fe 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
DieterGraef 0:f9b6112278fe 764 }
DieterGraef 0:f9b6112278fe 765 }
DieterGraef 0:f9b6112278fe 766
DieterGraef 0:f9b6112278fe 767 /*
DieterGraef 0:f9b6112278fe 768 * connect_time_expired - log a message and close the connection.
DieterGraef 0:f9b6112278fe 769 */
DieterGraef 0:f9b6112278fe 770 static void
DieterGraef 0:f9b6112278fe 771 connect_time_expired(void *arg)
DieterGraef 0:f9b6112278fe 772 {
DieterGraef 0:f9b6112278fe 773 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 774
DieterGraef 0:f9b6112278fe 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
DieterGraef 0:f9b6112278fe 776 lcp_close(0, "Connect time expired"); /* Close connection */
DieterGraef 0:f9b6112278fe 777 }
DieterGraef 0:f9b6112278fe 778
DieterGraef 0:f9b6112278fe 779 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 780 /*
DieterGraef 0:f9b6112278fe 781 * auth_check_options - called to check authentication options.
DieterGraef 0:f9b6112278fe 782 */
DieterGraef 0:f9b6112278fe 783 void
DieterGraef 0:f9b6112278fe 784 auth_check_options(void)
DieterGraef 0:f9b6112278fe 785 {
DieterGraef 0:f9b6112278fe 786 lcp_options *wo = &lcp_wantoptions[0];
DieterGraef 0:f9b6112278fe 787 int can_auth;
DieterGraef 0:f9b6112278fe 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
DieterGraef 0:f9b6112278fe 789 u32_t remote;
DieterGraef 0:f9b6112278fe 790
DieterGraef 0:f9b6112278fe 791 /* Default our_name to hostname, and user to our_name */
DieterGraef 0:f9b6112278fe 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
DieterGraef 0:f9b6112278fe 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
DieterGraef 0:f9b6112278fe 794 }
DieterGraef 0:f9b6112278fe 795
DieterGraef 0:f9b6112278fe 796 if (ppp_settings.user[0] == 0) {
DieterGraef 0:f9b6112278fe 797 strcpy(ppp_settings.user, ppp_settings.our_name);
DieterGraef 0:f9b6112278fe 798 }
DieterGraef 0:f9b6112278fe 799
DieterGraef 0:f9b6112278fe 800 /* If authentication is required, ask peer for CHAP or PAP. */
DieterGraef 0:f9b6112278fe 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
DieterGraef 0:f9b6112278fe 802 wo->neg_chap = 1;
DieterGraef 0:f9b6112278fe 803 wo->neg_upap = 1;
DieterGraef 0:f9b6112278fe 804 }
DieterGraef 0:f9b6112278fe 805
DieterGraef 0:f9b6112278fe 806 /*
DieterGraef 0:f9b6112278fe 807 * Check whether we have appropriate secrets to use
DieterGraef 0:f9b6112278fe 808 * to authenticate the peer.
DieterGraef 0:f9b6112278fe 809 */
DieterGraef 0:f9b6112278fe 810 can_auth = wo->neg_upap && have_pap_secret();
DieterGraef 0:f9b6112278fe 811 if (!can_auth && wo->neg_chap) {
DieterGraef 0:f9b6112278fe 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
DieterGraef 0:f9b6112278fe 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
DieterGraef 0:f9b6112278fe 814 }
DieterGraef 0:f9b6112278fe 815
DieterGraef 0:f9b6112278fe 816 if (ppp_settings.auth_required && !can_auth) {
DieterGraef 0:f9b6112278fe 817 ppp_panic("No auth secret");
DieterGraef 0:f9b6112278fe 818 }
DieterGraef 0:f9b6112278fe 819 }
DieterGraef 0:f9b6112278fe 820 #endif /* UNUSED */
DieterGraef 0:f9b6112278fe 821
DieterGraef 0:f9b6112278fe 822 /*
DieterGraef 0:f9b6112278fe 823 * auth_reset - called when LCP is starting negotiations to recheck
DieterGraef 0:f9b6112278fe 824 * authentication options, i.e. whether we have appropriate secrets
DieterGraef 0:f9b6112278fe 825 * to use for authenticating ourselves and/or the peer.
DieterGraef 0:f9b6112278fe 826 */
DieterGraef 0:f9b6112278fe 827 void
DieterGraef 0:f9b6112278fe 828 auth_reset(int unit)
DieterGraef 0:f9b6112278fe 829 {
DieterGraef 0:f9b6112278fe 830 lcp_options *go = &lcp_gotoptions[unit];
DieterGraef 0:f9b6112278fe 831 lcp_options *ao = &lcp_allowoptions[0];
DieterGraef 0:f9b6112278fe 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
DieterGraef 0:f9b6112278fe 833 u32_t remote;
DieterGraef 0:f9b6112278fe 834
DieterGraef 0:f9b6112278fe 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
DieterGraef 0:f9b6112278fe 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
DieterGraef 0:f9b6112278fe 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:f9b6112278fe 838
DieterGraef 0:f9b6112278fe 839 if (go->neg_upap && !have_pap_secret()) {
DieterGraef 0:f9b6112278fe 840 go->neg_upap = 0;
DieterGraef 0:f9b6112278fe 841 }
DieterGraef 0:f9b6112278fe 842 if (go->neg_chap) {
DieterGraef 0:f9b6112278fe 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
DieterGraef 0:f9b6112278fe 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
DieterGraef 0:f9b6112278fe 845 go->neg_chap = 0;
DieterGraef 0:f9b6112278fe 846 }
DieterGraef 0:f9b6112278fe 847 }
DieterGraef 0:f9b6112278fe 848 }
DieterGraef 0:f9b6112278fe 849
DieterGraef 0:f9b6112278fe 850 #if PAP_SUPPORT
DieterGraef 0:f9b6112278fe 851 /*
DieterGraef 0:f9b6112278fe 852 * check_passwd - Check the user name and passwd against the PAP secrets
DieterGraef 0:f9b6112278fe 853 * file. If requested, also check against the system password database,
DieterGraef 0:f9b6112278fe 854 * and login the user if OK.
DieterGraef 0:f9b6112278fe 855 *
DieterGraef 0:f9b6112278fe 856 * returns:
DieterGraef 0:f9b6112278fe 857 * UPAP_AUTHNAK: Authentication failed.
DieterGraef 0:f9b6112278fe 858 * UPAP_AUTHACK: Authentication succeeded.
DieterGraef 0:f9b6112278fe 859 * In either case, msg points to an appropriate message.
DieterGraef 0:f9b6112278fe 860 */
DieterGraef 0:f9b6112278fe 861 u_char
DieterGraef 0:f9b6112278fe 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
DieterGraef 0:f9b6112278fe 863 {
DieterGraef 0:f9b6112278fe 864 #if 1 /* XXX Assume all entries OK. */
DieterGraef 0:f9b6112278fe 865 LWIP_UNUSED_ARG(unit);
DieterGraef 0:f9b6112278fe 866 LWIP_UNUSED_ARG(auser);
DieterGraef 0:f9b6112278fe 867 LWIP_UNUSED_ARG(userlen);
DieterGraef 0:f9b6112278fe 868 LWIP_UNUSED_ARG(apasswd);
DieterGraef 0:f9b6112278fe 869 LWIP_UNUSED_ARG(passwdlen);
DieterGraef 0:f9b6112278fe 870 LWIP_UNUSED_ARG(msglen);
DieterGraef 0:f9b6112278fe 871 *msg = (char *) 0;
DieterGraef 0:f9b6112278fe 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
DieterGraef 0:f9b6112278fe 873 #else
DieterGraef 0:f9b6112278fe 874 u_char ret = 0;
DieterGraef 0:f9b6112278fe 875 struct wordlist *addrs = NULL;
DieterGraef 0:f9b6112278fe 876 char passwd[256], user[256];
DieterGraef 0:f9b6112278fe 877 char secret[MAXWORDLEN];
DieterGraef 0:f9b6112278fe 878 static u_short attempts = 0;
DieterGraef 0:f9b6112278fe 879
DieterGraef 0:f9b6112278fe 880 /*
DieterGraef 0:f9b6112278fe 881 * Make copies of apasswd and auser, then null-terminate them.
DieterGraef 0:f9b6112278fe 882 */
DieterGraef 0:f9b6112278fe 883 BCOPY(apasswd, passwd, passwdlen);
DieterGraef 0:f9b6112278fe 884 passwd[passwdlen] = '\0';
DieterGraef 0:f9b6112278fe 885 BCOPY(auser, user, userlen);
DieterGraef 0:f9b6112278fe 886 user[userlen] = '\0';
DieterGraef 0:f9b6112278fe 887 *msg = (char *) 0;
DieterGraef 0:f9b6112278fe 888
DieterGraef 0:f9b6112278fe 889 /* XXX Validate user name and password. */
DieterGraef 0:f9b6112278fe 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
DieterGraef 0:f9b6112278fe 891
DieterGraef 0:f9b6112278fe 892 if (ret == UPAP_AUTHNAK) {
DieterGraef 0:f9b6112278fe 893 if (*msg == (char *) 0) {
DieterGraef 0:f9b6112278fe 894 *msg = "Login incorrect";
DieterGraef 0:f9b6112278fe 895 }
DieterGraef 0:f9b6112278fe 896 *msglen = strlen(*msg);
DieterGraef 0:f9b6112278fe 897 /*
DieterGraef 0:f9b6112278fe 898 * Frustrate passwd stealer programs.
DieterGraef 0:f9b6112278fe 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
DieterGraef 0:f9b6112278fe 900 * On 10'th, drop the connection.
DieterGraef 0:f9b6112278fe 901 */
DieterGraef 0:f9b6112278fe 902 if (attempts++ >= 10) {
DieterGraef 0:f9b6112278fe 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
DieterGraef 0:f9b6112278fe 904 /*ppp_panic("Excess Bad Logins");*/
DieterGraef 0:f9b6112278fe 905 }
DieterGraef 0:f9b6112278fe 906 if (attempts > 3) {
DieterGraef 0:f9b6112278fe 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
DieterGraef 0:f9b6112278fe 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
DieterGraef 0:f9b6112278fe 909 */
DieterGraef 0:f9b6112278fe 910 /*sys_msleep((attempts - 3) * 5);*/
DieterGraef 0:f9b6112278fe 911 }
DieterGraef 0:f9b6112278fe 912 if (addrs != NULL) {
DieterGraef 0:f9b6112278fe 913 free_wordlist(addrs);
DieterGraef 0:f9b6112278fe 914 }
DieterGraef 0:f9b6112278fe 915 } else {
DieterGraef 0:f9b6112278fe 916 attempts = 0; /* Reset count */
DieterGraef 0:f9b6112278fe 917 if (*msg == (char *) 0) {
DieterGraef 0:f9b6112278fe 918 *msg = "Login ok";
DieterGraef 0:f9b6112278fe 919 }
DieterGraef 0:f9b6112278fe 920 *msglen = strlen(*msg);
DieterGraef 0:f9b6112278fe 921 set_allowed_addrs(unit, addrs);
DieterGraef 0:f9b6112278fe 922 }
DieterGraef 0:f9b6112278fe 923
DieterGraef 0:f9b6112278fe 924 BZERO(passwd, sizeof(passwd));
DieterGraef 0:f9b6112278fe 925 BZERO(secret, sizeof(secret));
DieterGraef 0:f9b6112278fe 926
DieterGraef 0:f9b6112278fe 927 return ret;
DieterGraef 0:f9b6112278fe 928 #endif
DieterGraef 0:f9b6112278fe 929 }
DieterGraef 0:f9b6112278fe 930 #endif /* PAP_SUPPORT */
DieterGraef 0:f9b6112278fe 931
DieterGraef 0:f9b6112278fe 932 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 933 /*
DieterGraef 0:f9b6112278fe 934 * This function is needed for PAM.
DieterGraef 0:f9b6112278fe 935 */
DieterGraef 0:f9b6112278fe 936
DieterGraef 0:f9b6112278fe 937 #ifdef USE_PAM
DieterGraef 0:f9b6112278fe 938
DieterGraef 0:f9b6112278fe 939 /* lwip does not support PAM*/
DieterGraef 0:f9b6112278fe 940
DieterGraef 0:f9b6112278fe 941 #endif /* USE_PAM */
DieterGraef 0:f9b6112278fe 942
DieterGraef 0:f9b6112278fe 943 #endif /* UNUSED */
DieterGraef 0:f9b6112278fe 944
DieterGraef 0:f9b6112278fe 945
DieterGraef 0:f9b6112278fe 946 #if 0 /* UNUSED */
DieterGraef 0:f9b6112278fe 947 /*
DieterGraef 0:f9b6112278fe 948 * plogin - Check the user name and password against the system
DieterGraef 0:f9b6112278fe 949 * password database, and login the user if OK.
DieterGraef 0:f9b6112278fe 950 *
DieterGraef 0:f9b6112278fe 951 * returns:
DieterGraef 0:f9b6112278fe 952 * UPAP_AUTHNAK: Login failed.
DieterGraef 0:f9b6112278fe 953 * UPAP_AUTHACK: Login succeeded.
DieterGraef 0:f9b6112278fe 954 * In either case, msg points to an appropriate message.
DieterGraef 0:f9b6112278fe 955 */
DieterGraef 0:f9b6112278fe 956 static int
DieterGraef 0:f9b6112278fe 957 plogin(char *user, char *passwd, char **msg, int *msglen)
DieterGraef 0:f9b6112278fe 958 {
DieterGraef 0:f9b6112278fe 959
DieterGraef 0:f9b6112278fe 960 LWIP_UNUSED_ARG(user);
DieterGraef 0:f9b6112278fe 961 LWIP_UNUSED_ARG(passwd);
DieterGraef 0:f9b6112278fe 962 LWIP_UNUSED_ARG(msg);
DieterGraef 0:f9b6112278fe 963 LWIP_UNUSED_ARG(msglen);
DieterGraef 0:f9b6112278fe 964
DieterGraef 0:f9b6112278fe 965
DieterGraef 0:f9b6112278fe 966 /* The new lines are here align the file when
DieterGraef 0:f9b6112278fe 967 * compared against the pppd 2.3.11 code */
DieterGraef 0:f9b6112278fe 968
DieterGraef 0:f9b6112278fe 969
DieterGraef 0:f9b6112278fe 970
DieterGraef 0:f9b6112278fe 971
DieterGraef 0:f9b6112278fe 972
DieterGraef 0:f9b6112278fe 973
DieterGraef 0:f9b6112278fe 974
DieterGraef 0:f9b6112278fe 975
DieterGraef 0:f9b6112278fe 976
DieterGraef 0:f9b6112278fe 977
DieterGraef 0:f9b6112278fe 978
DieterGraef 0:f9b6112278fe 979
DieterGraef 0:f9b6112278fe 980
DieterGraef 0:f9b6112278fe 981
DieterGraef 0:f9b6112278fe 982
DieterGraef 0:f9b6112278fe 983
DieterGraef 0:f9b6112278fe 984 /* XXX Fail until we decide that we want to support logins. */
DieterGraef 0:f9b6112278fe 985 return (UPAP_AUTHNAK);
DieterGraef 0:f9b6112278fe 986 }
DieterGraef 0:f9b6112278fe 987 #endif
DieterGraef 0:f9b6112278fe 988
DieterGraef 0:f9b6112278fe 989
DieterGraef 0:f9b6112278fe 990
DieterGraef 0:f9b6112278fe 991 /*
DieterGraef 0:f9b6112278fe 992 * plogout - Logout the user.
DieterGraef 0:f9b6112278fe 993 */
DieterGraef 0:f9b6112278fe 994 static void
DieterGraef 0:f9b6112278fe 995 plogout(void)
DieterGraef 0:f9b6112278fe 996 {
DieterGraef 0:f9b6112278fe 997 logged_in = 0;
DieterGraef 0:f9b6112278fe 998 }
DieterGraef 0:f9b6112278fe 999
DieterGraef 0:f9b6112278fe 1000 /*
DieterGraef 0:f9b6112278fe 1001 * null_login - Check if a username of "" and a password of "" are
DieterGraef 0:f9b6112278fe 1002 * acceptable, and iff so, set the list of acceptable IP addresses
DieterGraef 0:f9b6112278fe 1003 * and return 1.
DieterGraef 0:f9b6112278fe 1004 */
DieterGraef 0:f9b6112278fe 1005 static int
DieterGraef 0:f9b6112278fe 1006 null_login(int unit)
DieterGraef 0:f9b6112278fe 1007 {
DieterGraef 0:f9b6112278fe 1008 LWIP_UNUSED_ARG(unit);
DieterGraef 0:f9b6112278fe 1009 /* XXX Fail until we decide that we want to support logins. */
DieterGraef 0:f9b6112278fe 1010 return 0;
DieterGraef 0:f9b6112278fe 1011 }
DieterGraef 0:f9b6112278fe 1012
DieterGraef 0:f9b6112278fe 1013
DieterGraef 0:f9b6112278fe 1014 /*
DieterGraef 0:f9b6112278fe 1015 * get_pap_passwd - get a password for authenticating ourselves with
DieterGraef 0:f9b6112278fe 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
DieterGraef 0:f9b6112278fe 1017 * could be found.
DieterGraef 0:f9b6112278fe 1018 */
DieterGraef 0:f9b6112278fe 1019 static int
DieterGraef 0:f9b6112278fe 1020 get_pap_passwd(int unit, char *user, char *passwd)
DieterGraef 0:f9b6112278fe 1021 {
DieterGraef 0:f9b6112278fe 1022 LWIP_UNUSED_ARG(unit);
DieterGraef 0:f9b6112278fe 1023 /* normally we would reject PAP if no password is provided,
DieterGraef 0:f9b6112278fe 1024 but this causes problems with some providers (like CHT in Taiwan)
DieterGraef 0:f9b6112278fe 1025 who incorrectly request PAP and expect a bogus/empty password, so
DieterGraef 0:f9b6112278fe 1026 always provide a default user/passwd of "none"/"none"
DieterGraef 0:f9b6112278fe 1027
DieterGraef 0:f9b6112278fe 1028 @todo: This should be configured by the user, instead of being hardcoded here!
DieterGraef 0:f9b6112278fe 1029 */
DieterGraef 0:f9b6112278fe 1030 if(user) {
DieterGraef 0:f9b6112278fe 1031 strcpy(user, "none");
DieterGraef 0:f9b6112278fe 1032 }
DieterGraef 0:f9b6112278fe 1033 if(passwd) {
DieterGraef 0:f9b6112278fe 1034 strcpy(passwd, "none");
DieterGraef 0:f9b6112278fe 1035 }
DieterGraef 0:f9b6112278fe 1036 return 1;
DieterGraef 0:f9b6112278fe 1037 }
DieterGraef 0:f9b6112278fe 1038
DieterGraef 0:f9b6112278fe 1039 /*
DieterGraef 0:f9b6112278fe 1040 * have_pap_secret - check whether we have a PAP file with any
DieterGraef 0:f9b6112278fe 1041 * secrets that we could possibly use for authenticating the peer.
DieterGraef 0:f9b6112278fe 1042 */
DieterGraef 0:f9b6112278fe 1043 static int
DieterGraef 0:f9b6112278fe 1044 have_pap_secret(void)
DieterGraef 0:f9b6112278fe 1045 {
DieterGraef 0:f9b6112278fe 1046 /* XXX Fail until we set up our passwords. */
DieterGraef 0:f9b6112278fe 1047 return 0;
DieterGraef 0:f9b6112278fe 1048 }
DieterGraef 0:f9b6112278fe 1049
DieterGraef 0:f9b6112278fe 1050 /*
DieterGraef 0:f9b6112278fe 1051 * have_chap_secret - check whether we have a CHAP file with a
DieterGraef 0:f9b6112278fe 1052 * secret that we could possibly use for authenticating `client'
DieterGraef 0:f9b6112278fe 1053 * on `server'. Either can be the null string, meaning we don't
DieterGraef 0:f9b6112278fe 1054 * know the identity yet.
DieterGraef 0:f9b6112278fe 1055 */
DieterGraef 0:f9b6112278fe 1056 static int
DieterGraef 0:f9b6112278fe 1057 have_chap_secret(char *client, char *server, u32_t remote)
DieterGraef 0:f9b6112278fe 1058 {
DieterGraef 0:f9b6112278fe 1059 LWIP_UNUSED_ARG(client);
DieterGraef 0:f9b6112278fe 1060 LWIP_UNUSED_ARG(server);
DieterGraef 0:f9b6112278fe 1061 LWIP_UNUSED_ARG(remote);
DieterGraef 0:f9b6112278fe 1062
DieterGraef 0:f9b6112278fe 1063 /* XXX Fail until we set up our passwords. */
DieterGraef 0:f9b6112278fe 1064 return 0;
DieterGraef 0:f9b6112278fe 1065 }
DieterGraef 0:f9b6112278fe 1066 #if CHAP_SUPPORT
DieterGraef 0:f9b6112278fe 1067
DieterGraef 0:f9b6112278fe 1068 /*
DieterGraef 0:f9b6112278fe 1069 * get_secret - open the CHAP secret file and return the secret
DieterGraef 0:f9b6112278fe 1070 * for authenticating the given client on the given server.
DieterGraef 0:f9b6112278fe 1071 * (We could be either client or server).
DieterGraef 0:f9b6112278fe 1072 */
DieterGraef 0:f9b6112278fe 1073 int
DieterGraef 0:f9b6112278fe 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
DieterGraef 0:f9b6112278fe 1075 {
DieterGraef 0:f9b6112278fe 1076 #if 1
DieterGraef 0:f9b6112278fe 1077 int len;
DieterGraef 0:f9b6112278fe 1078 struct wordlist *addrs;
DieterGraef 0:f9b6112278fe 1079
DieterGraef 0:f9b6112278fe 1080 LWIP_UNUSED_ARG(unit);
DieterGraef 0:f9b6112278fe 1081 LWIP_UNUSED_ARG(server);
DieterGraef 0:f9b6112278fe 1082 LWIP_UNUSED_ARG(save_addrs);
DieterGraef 0:f9b6112278fe 1083
DieterGraef 0:f9b6112278fe 1084 addrs = NULL;
DieterGraef 0:f9b6112278fe 1085
DieterGraef 0:f9b6112278fe 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
DieterGraef 0:f9b6112278fe 1087 return 0;
DieterGraef 0:f9b6112278fe 1088 }
DieterGraef 0:f9b6112278fe 1089
DieterGraef 0:f9b6112278fe 1090 len = (int)strlen(ppp_settings.passwd);
DieterGraef 0:f9b6112278fe 1091 if (len > MAXSECRETLEN) {
DieterGraef 0:f9b6112278fe 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
DieterGraef 0:f9b6112278fe 1093 len = MAXSECRETLEN;
DieterGraef 0:f9b6112278fe 1094 }
DieterGraef 0:f9b6112278fe 1095
DieterGraef 0:f9b6112278fe 1096 BCOPY(ppp_settings.passwd, secret, len);
DieterGraef 0:f9b6112278fe 1097 *secret_len = len;
DieterGraef 0:f9b6112278fe 1098
DieterGraef 0:f9b6112278fe 1099 return 1;
DieterGraef 0:f9b6112278fe 1100 #else
DieterGraef 0:f9b6112278fe 1101 int ret = 0, len;
DieterGraef 0:f9b6112278fe 1102 struct wordlist *addrs;
DieterGraef 0:f9b6112278fe 1103 char secbuf[MAXWORDLEN];
DieterGraef 0:f9b6112278fe 1104
DieterGraef 0:f9b6112278fe 1105 addrs = NULL;
DieterGraef 0:f9b6112278fe 1106 secbuf[0] = 0;
DieterGraef 0:f9b6112278fe 1107
DieterGraef 0:f9b6112278fe 1108 /* XXX Find secret. */
DieterGraef 0:f9b6112278fe 1109 if (ret < 0) {
DieterGraef 0:f9b6112278fe 1110 return 0;
DieterGraef 0:f9b6112278fe 1111 }
DieterGraef 0:f9b6112278fe 1112
DieterGraef 0:f9b6112278fe 1113 if (save_addrs) {
DieterGraef 0:f9b6112278fe 1114 set_allowed_addrs(unit, addrs);
DieterGraef 0:f9b6112278fe 1115 }
DieterGraef 0:f9b6112278fe 1116
DieterGraef 0:f9b6112278fe 1117 len = strlen(secbuf);
DieterGraef 0:f9b6112278fe 1118 if (len > MAXSECRETLEN) {
DieterGraef 0:f9b6112278fe 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
DieterGraef 0:f9b6112278fe 1120 len = MAXSECRETLEN;
DieterGraef 0:f9b6112278fe 1121 }
DieterGraef 0:f9b6112278fe 1122
DieterGraef 0:f9b6112278fe 1123 BCOPY(secbuf, secret, len);
DieterGraef 0:f9b6112278fe 1124 BZERO(secbuf, sizeof(secbuf));
DieterGraef 0:f9b6112278fe 1125 *secret_len = len;
DieterGraef 0:f9b6112278fe 1126
DieterGraef 0:f9b6112278fe 1127 return 1;
DieterGraef 0:f9b6112278fe 1128 #endif
DieterGraef 0:f9b6112278fe 1129 }
DieterGraef 0:f9b6112278fe 1130 #endif /* CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 1131
DieterGraef 0:f9b6112278fe 1132
DieterGraef 0:f9b6112278fe 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 1134 /*
DieterGraef 0:f9b6112278fe 1135 * set_allowed_addrs() - set the list of allowed addresses.
DieterGraef 0:f9b6112278fe 1136 */
DieterGraef 0:f9b6112278fe 1137 static void
DieterGraef 0:f9b6112278fe 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
DieterGraef 0:f9b6112278fe 1139 {
DieterGraef 0:f9b6112278fe 1140 if (addresses[unit] != NULL) {
DieterGraef 0:f9b6112278fe 1141 free_wordlist(addresses[unit]);
DieterGraef 0:f9b6112278fe 1142 }
DieterGraef 0:f9b6112278fe 1143 addresses[unit] = addrs;
DieterGraef 0:f9b6112278fe 1144
DieterGraef 0:f9b6112278fe 1145 #if 0
DieterGraef 0:f9b6112278fe 1146 /*
DieterGraef 0:f9b6112278fe 1147 * If there's only one authorized address we might as well
DieterGraef 0:f9b6112278fe 1148 * ask our peer for that one right away
DieterGraef 0:f9b6112278fe 1149 */
DieterGraef 0:f9b6112278fe 1150 if (addrs != NULL && addrs->next == NULL) {
DieterGraef 0:f9b6112278fe 1151 char *p = addrs->word;
DieterGraef 0:f9b6112278fe 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
DieterGraef 0:f9b6112278fe 1153 u32_t a;
DieterGraef 0:f9b6112278fe 1154 struct hostent *hp;
DieterGraef 0:f9b6112278fe 1155
DieterGraef 0:f9b6112278fe 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
DieterGraef 0:f9b6112278fe 1157 hp = gethostbyname(p);
DieterGraef 0:f9b6112278fe 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
DieterGraef 0:f9b6112278fe 1159 a = *(u32_t *)hp->h_addr;
DieterGraef 0:f9b6112278fe 1160 } else {
DieterGraef 0:f9b6112278fe 1161 a = inet_addr(p);
DieterGraef 0:f9b6112278fe 1162 }
DieterGraef 0:f9b6112278fe 1163 if (a != (u32_t) -1) {
DieterGraef 0:f9b6112278fe 1164 wo->hisaddr = a;
DieterGraef 0:f9b6112278fe 1165 }
DieterGraef 0:f9b6112278fe 1166 }
DieterGraef 0:f9b6112278fe 1167 }
DieterGraef 0:f9b6112278fe 1168 #endif
DieterGraef 0:f9b6112278fe 1169 }
DieterGraef 0:f9b6112278fe 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 1171
DieterGraef 0:f9b6112278fe 1172 /*
DieterGraef 0:f9b6112278fe 1173 * auth_ip_addr - check whether the peer is authorized to use
DieterGraef 0:f9b6112278fe 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
DieterGraef 0:f9b6112278fe 1175 */
DieterGraef 0:f9b6112278fe 1176 int
DieterGraef 0:f9b6112278fe 1177 auth_ip_addr(int unit, u32_t addr)
DieterGraef 0:f9b6112278fe 1178 {
DieterGraef 0:f9b6112278fe 1179 return ip_addr_check(addr, addresses[unit]);
DieterGraef 0:f9b6112278fe 1180 }
DieterGraef 0:f9b6112278fe 1181
DieterGraef 0:f9b6112278fe 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
DieterGraef 0:f9b6112278fe 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
DieterGraef 0:f9b6112278fe 1184 {
DieterGraef 0:f9b6112278fe 1185 /* don't allow loopback or multicast address */
DieterGraef 0:f9b6112278fe 1186 if (bad_ip_adrs(addr)) {
DieterGraef 0:f9b6112278fe 1187 return 0;
DieterGraef 0:f9b6112278fe 1188 }
DieterGraef 0:f9b6112278fe 1189
DieterGraef 0:f9b6112278fe 1190 if (addrs == NULL) {
DieterGraef 0:f9b6112278fe 1191 return !ppp_settings.auth_required; /* no addresses authorized */
DieterGraef 0:f9b6112278fe 1192 }
DieterGraef 0:f9b6112278fe 1193
DieterGraef 0:f9b6112278fe 1194 /* XXX All other addresses allowed. */
DieterGraef 0:f9b6112278fe 1195 return 1;
DieterGraef 0:f9b6112278fe 1196 }
DieterGraef 0:f9b6112278fe 1197
DieterGraef 0:f9b6112278fe 1198 /*
DieterGraef 0:f9b6112278fe 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
DieterGraef 0:f9b6112278fe 1200 * to use, such as an address in the loopback net or a multicast address.
DieterGraef 0:f9b6112278fe 1201 * addr is in network byte order.
DieterGraef 0:f9b6112278fe 1202 */
DieterGraef 0:f9b6112278fe 1203 int
DieterGraef 0:f9b6112278fe 1204 bad_ip_adrs(u32_t addr)
DieterGraef 0:f9b6112278fe 1205 {
DieterGraef 0:f9b6112278fe 1206 addr = ntohl(addr);
DieterGraef 0:f9b6112278fe 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
DieterGraef 0:f9b6112278fe 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
DieterGraef 0:f9b6112278fe 1209 }
DieterGraef 0:f9b6112278fe 1210
DieterGraef 0:f9b6112278fe 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 1212 /*
DieterGraef 0:f9b6112278fe 1213 * some_ip_ok - check a wordlist to see if it authorizes any
DieterGraef 0:f9b6112278fe 1214 * IP address(es).
DieterGraef 0:f9b6112278fe 1215 */
DieterGraef 0:f9b6112278fe 1216 static int
DieterGraef 0:f9b6112278fe 1217 some_ip_ok(struct wordlist *addrs)
DieterGraef 0:f9b6112278fe 1218 {
DieterGraef 0:f9b6112278fe 1219 for (; addrs != 0; addrs = addrs->next) {
DieterGraef 0:f9b6112278fe 1220 if (addrs->word[0] == '-')
DieterGraef 0:f9b6112278fe 1221 break;
DieterGraef 0:f9b6112278fe 1222 if (addrs->word[0] != '!')
DieterGraef 0:f9b6112278fe 1223 return 1; /* some IP address is allowed */
DieterGraef 0:f9b6112278fe 1224 }
DieterGraef 0:f9b6112278fe 1225 return 0;
DieterGraef 0:f9b6112278fe 1226 }
DieterGraef 0:f9b6112278fe 1227
DieterGraef 0:f9b6112278fe 1228 /*
DieterGraef 0:f9b6112278fe 1229 * check_access - complain if a secret file has too-liberal permissions.
DieterGraef 0:f9b6112278fe 1230 */
DieterGraef 0:f9b6112278fe 1231 static void
DieterGraef 0:f9b6112278fe 1232 check_access(FILE *f, char *filename)
DieterGraef 0:f9b6112278fe 1233 {
DieterGraef 0:f9b6112278fe 1234 struct stat sbuf;
DieterGraef 0:f9b6112278fe 1235
DieterGraef 0:f9b6112278fe 1236 if (fstat(fileno(f), &sbuf) < 0) {
DieterGraef 0:f9b6112278fe 1237 warn("cannot stat secret file %s: %m", filename);
DieterGraef 0:f9b6112278fe 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
DieterGraef 0:f9b6112278fe 1239 warn("Warning - secret file %s has world and/or group access",
DieterGraef 0:f9b6112278fe 1240 filename);
DieterGraef 0:f9b6112278fe 1241 }
DieterGraef 0:f9b6112278fe 1242 }
DieterGraef 0:f9b6112278fe 1243
DieterGraef 0:f9b6112278fe 1244
DieterGraef 0:f9b6112278fe 1245 /*
DieterGraef 0:f9b6112278fe 1246 * scan_authfile - Scan an authorization file for a secret suitable
DieterGraef 0:f9b6112278fe 1247 * for authenticating `client' on `server'. The return value is -1
DieterGraef 0:f9b6112278fe 1248 * if no secret is found, otherwise >= 0. The return value has
DieterGraef 0:f9b6112278fe 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
DieterGraef 0:f9b6112278fe 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
DieterGraef 0:f9b6112278fe 1251 * Any following words on the line up to a "--" (i.e. address authorization
DieterGraef 0:f9b6112278fe 1252 * info) are placed in a wordlist and returned in *addrs. Any
DieterGraef 0:f9b6112278fe 1253 * following words (extra options) are placed in a wordlist and
DieterGraef 0:f9b6112278fe 1254 * returned in *opts.
DieterGraef 0:f9b6112278fe 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
DieterGraef 0:f9b6112278fe 1256 */
DieterGraef 0:f9b6112278fe 1257 static int
DieterGraef 0:f9b6112278fe 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
DieterGraef 0:f9b6112278fe 1259 {
DieterGraef 0:f9b6112278fe 1260 /* We do not (currently) need this in lwip */
DieterGraef 0:f9b6112278fe 1261 return 0; /* dummy */
DieterGraef 0:f9b6112278fe 1262 }
DieterGraef 0:f9b6112278fe 1263 /*
DieterGraef 0:f9b6112278fe 1264 * free_wordlist - release memory allocated for a wordlist.
DieterGraef 0:f9b6112278fe 1265 */
DieterGraef 0:f9b6112278fe 1266 static void
DieterGraef 0:f9b6112278fe 1267 free_wordlist(struct wordlist *wp)
DieterGraef 0:f9b6112278fe 1268 {
DieterGraef 0:f9b6112278fe 1269 struct wordlist *next;
DieterGraef 0:f9b6112278fe 1270
DieterGraef 0:f9b6112278fe 1271 while (wp != NULL) {
DieterGraef 0:f9b6112278fe 1272 next = wp->next;
DieterGraef 0:f9b6112278fe 1273 free(wp);
DieterGraef 0:f9b6112278fe 1274 wp = next;
DieterGraef 0:f9b6112278fe 1275 }
DieterGraef 0:f9b6112278fe 1276 }
DieterGraef 0:f9b6112278fe 1277
DieterGraef 0:f9b6112278fe 1278 /*
DieterGraef 0:f9b6112278fe 1279 * auth_script_done - called when the auth-up or auth-down script
DieterGraef 0:f9b6112278fe 1280 * has finished.
DieterGraef 0:f9b6112278fe 1281 */
DieterGraef 0:f9b6112278fe 1282 static void
DieterGraef 0:f9b6112278fe 1283 auth_script_done(void *arg)
DieterGraef 0:f9b6112278fe 1284 {
DieterGraef 0:f9b6112278fe 1285 auth_script_pid = 0;
DieterGraef 0:f9b6112278fe 1286 switch (auth_script_state) {
DieterGraef 0:f9b6112278fe 1287 case s_up:
DieterGraef 0:f9b6112278fe 1288 if (auth_state == s_down) {
DieterGraef 0:f9b6112278fe 1289 auth_script_state = s_down;
DieterGraef 0:f9b6112278fe 1290 auth_script(_PATH_AUTHDOWN);
DieterGraef 0:f9b6112278fe 1291 }
DieterGraef 0:f9b6112278fe 1292 break;
DieterGraef 0:f9b6112278fe 1293 case s_down:
DieterGraef 0:f9b6112278fe 1294 if (auth_state == s_up) {
DieterGraef 0:f9b6112278fe 1295 auth_script_state = s_up;
DieterGraef 0:f9b6112278fe 1296 auth_script(_PATH_AUTHUP);
DieterGraef 0:f9b6112278fe 1297 }
DieterGraef 0:f9b6112278fe 1298 break;
DieterGraef 0:f9b6112278fe 1299 }
DieterGraef 0:f9b6112278fe 1300 }
DieterGraef 0:f9b6112278fe 1301
DieterGraef 0:f9b6112278fe 1302 /*
DieterGraef 0:f9b6112278fe 1303 * auth_script - execute a script with arguments
DieterGraef 0:f9b6112278fe 1304 * interface-name peer-name real-user tty speed
DieterGraef 0:f9b6112278fe 1305 */
DieterGraef 0:f9b6112278fe 1306 static void
DieterGraef 0:f9b6112278fe 1307 auth_script(char *script)
DieterGraef 0:f9b6112278fe 1308 {
DieterGraef 0:f9b6112278fe 1309 char strspeed[32];
DieterGraef 0:f9b6112278fe 1310 struct passwd *pw;
DieterGraef 0:f9b6112278fe 1311 char struid[32];
DieterGraef 0:f9b6112278fe 1312 char *user_name;
DieterGraef 0:f9b6112278fe 1313 char *argv[8];
DieterGraef 0:f9b6112278fe 1314
DieterGraef 0:f9b6112278fe 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
DieterGraef 0:f9b6112278fe 1316 user_name = pw->pw_name;
DieterGraef 0:f9b6112278fe 1317 else {
DieterGraef 0:f9b6112278fe 1318 slprintf(struid, sizeof(struid), "%d", getuid());
DieterGraef 0:f9b6112278fe 1319 user_name = struid;
DieterGraef 0:f9b6112278fe 1320 }
DieterGraef 0:f9b6112278fe 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
DieterGraef 0:f9b6112278fe 1322
DieterGraef 0:f9b6112278fe 1323 argv[0] = script;
DieterGraef 0:f9b6112278fe 1324 argv[1] = ifname;
DieterGraef 0:f9b6112278fe 1325 argv[2] = peer_authname;
DieterGraef 0:f9b6112278fe 1326 argv[3] = user_name;
DieterGraef 0:f9b6112278fe 1327 argv[4] = devnam;
DieterGraef 0:f9b6112278fe 1328 argv[5] = strspeed;
DieterGraef 0:f9b6112278fe 1329 argv[6] = NULL;
DieterGraef 0:f9b6112278fe 1330
DieterGraef 0:f9b6112278fe 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
DieterGraef 0:f9b6112278fe 1332 }
DieterGraef 0:f9b6112278fe 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
DieterGraef 0:f9b6112278fe 1334 #endif /* PPP_SUPPORT */