Yasushi TAUCHI / Mbed 2 deprecated giken9_HTMLServer_Sample

ソースの整理中ですが、利用はできます。

Dependencies:   EthernetInterface HttpServer TextLCD mbed-rpc mbed-rtos mbed Socket lwip-eth lwip-sys lwip

EthernetInterface/lwip/netif/ppp/auth.c@0:7766f6712673, 2014-03-12 (annotated)

Committer:
yueee_yt
Date:
Wed Mar 12 04:19:54 2014 +0000
Revision:
0:7766f6712673
???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yueee_yt 0:7766f6712673 1 /*****************************************************************************
yueee_yt 0:7766f6712673 2 * auth.c - Network Authentication and Phase Control program file.
yueee_yt 0:7766f6712673 3 *
yueee_yt 0:7766f6712673 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
yueee_yt 0:7766f6712673 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
yueee_yt 0:7766f6712673 6 *
yueee_yt 0:7766f6712673 7 * The authors hereby grant permission to use, copy, modify, distribute,
yueee_yt 0:7766f6712673 8 * and license this software and its documentation for any purpose, provided
yueee_yt 0:7766f6712673 9 * that existing copyright notices are retained in all copies and that this
yueee_yt 0:7766f6712673 10 * notice and the following disclaimer are included verbatim in any
yueee_yt 0:7766f6712673 11 * distributions. No written agreement, license, or royalty fee is required
yueee_yt 0:7766f6712673 12 * for any of the authorized uses.
yueee_yt 0:7766f6712673 13 *
yueee_yt 0:7766f6712673 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
yueee_yt 0:7766f6712673 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
yueee_yt 0:7766f6712673 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
yueee_yt 0:7766f6712673 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
yueee_yt 0:7766f6712673 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
yueee_yt 0:7766f6712673 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
yueee_yt 0:7766f6712673 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
yueee_yt 0:7766f6712673 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
yueee_yt 0:7766f6712673 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
yueee_yt 0:7766f6712673 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
yueee_yt 0:7766f6712673 24 *
yueee_yt 0:7766f6712673 25 ******************************************************************************
yueee_yt 0:7766f6712673 26 * REVISION HISTORY
yueee_yt 0:7766f6712673 27 *
yueee_yt 0:7766f6712673 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
yueee_yt 0:7766f6712673 29 * Ported to lwIP.
yueee_yt 0:7766f6712673 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
yueee_yt 0:7766f6712673 31 * Ported from public pppd code.
yueee_yt 0:7766f6712673 32 *****************************************************************************/
yueee_yt 0:7766f6712673 33 /*
yueee_yt 0:7766f6712673 34 * auth.c - PPP authentication and phase control.
yueee_yt 0:7766f6712673 35 *
yueee_yt 0:7766f6712673 36 * Copyright (c) 1993 The Australian National University.
yueee_yt 0:7766f6712673 37 * All rights reserved.
yueee_yt 0:7766f6712673 38 *
yueee_yt 0:7766f6712673 39 * Redistribution and use in source and binary forms are permitted
yueee_yt 0:7766f6712673 40 * provided that the above copyright notice and this paragraph are
yueee_yt 0:7766f6712673 41 * duplicated in all such forms and that any documentation,
yueee_yt 0:7766f6712673 42 * advertising materials, and other materials related to such
yueee_yt 0:7766f6712673 43 * distribution and use acknowledge that the software was developed
yueee_yt 0:7766f6712673 44 * by the Australian National University. The name of the University
yueee_yt 0:7766f6712673 45 * may not be used to endorse or promote products derived from this
yueee_yt 0:7766f6712673 46 * software without specific prior written permission.
yueee_yt 0:7766f6712673 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
yueee_yt 0:7766f6712673 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
yueee_yt 0:7766f6712673 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
yueee_yt 0:7766f6712673 50 *
yueee_yt 0:7766f6712673 51 * Copyright (c) 1989 Carnegie Mellon University.
yueee_yt 0:7766f6712673 52 * All rights reserved.
yueee_yt 0:7766f6712673 53 *
yueee_yt 0:7766f6712673 54 * Redistribution and use in source and binary forms are permitted
yueee_yt 0:7766f6712673 55 * provided that the above copyright notice and this paragraph are
yueee_yt 0:7766f6712673 56 * duplicated in all such forms and that any documentation,
yueee_yt 0:7766f6712673 57 * advertising materials, and other materials related to such
yueee_yt 0:7766f6712673 58 * distribution and use acknowledge that the software was developed
yueee_yt 0:7766f6712673 59 * by Carnegie Mellon University. The name of the
yueee_yt 0:7766f6712673 60 * University may not be used to endorse or promote products derived
yueee_yt 0:7766f6712673 61 * from this software without specific prior written permission.
yueee_yt 0:7766f6712673 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
yueee_yt 0:7766f6712673 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
yueee_yt 0:7766f6712673 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
yueee_yt 0:7766f6712673 65 */
yueee_yt 0:7766f6712673 66
yueee_yt 0:7766f6712673 67 #include "lwip/opt.h"
yueee_yt 0:7766f6712673 68
yueee_yt 0:7766f6712673 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
yueee_yt 0:7766f6712673 70
yueee_yt 0:7766f6712673 71 #include "ppp.h"
yueee_yt 0:7766f6712673 72 #include "pppdebug.h"
yueee_yt 0:7766f6712673 73
yueee_yt 0:7766f6712673 74 #include "fsm.h"
yueee_yt 0:7766f6712673 75 #include "lcp.h"
yueee_yt 0:7766f6712673 76 #include "pap.h"
yueee_yt 0:7766f6712673 77 #include "chap.h"
yueee_yt 0:7766f6712673 78 #include "auth.h"
yueee_yt 0:7766f6712673 79 #include "ipcp.h"
yueee_yt 0:7766f6712673 80
yueee_yt 0:7766f6712673 81 #if CBCP_SUPPORT
yueee_yt 0:7766f6712673 82 #include "cbcp.h"
yueee_yt 0:7766f6712673 83 #endif /* CBCP_SUPPORT */
yueee_yt 0:7766f6712673 84
yueee_yt 0:7766f6712673 85 #include "lwip/inet.h"
yueee_yt 0:7766f6712673 86
yueee_yt 0:7766f6712673 87 #include <string.h>
yueee_yt 0:7766f6712673 88
yueee_yt 0:7766f6712673 89 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 90 /* Bits in scan_authfile return value */
yueee_yt 0:7766f6712673 91 #define NONWILD_SERVER 1
yueee_yt 0:7766f6712673 92 #define NONWILD_CLIENT 2
yueee_yt 0:7766f6712673 93
yueee_yt 0:7766f6712673 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
yueee_yt 0:7766f6712673 95 #endif /* UNUSED */
yueee_yt 0:7766f6712673 96
yueee_yt 0:7766f6712673 97 #if PAP_SUPPORT || CHAP_SUPPORT
yueee_yt 0:7766f6712673 98 /* The name by which the peer authenticated itself to us. */
yueee_yt 0:7766f6712673 99 static char peer_authname[MAXNAMELEN];
yueee_yt 0:7766f6712673 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 101
yueee_yt 0:7766f6712673 102 /* Records which authentication operations haven't completed yet. */
yueee_yt 0:7766f6712673 103 static int auth_pending[NUM_PPP];
yueee_yt 0:7766f6712673 104
yueee_yt 0:7766f6712673 105 /* Set if we have successfully called plogin() */
yueee_yt 0:7766f6712673 106 static int logged_in;
yueee_yt 0:7766f6712673 107
yueee_yt 0:7766f6712673 108 /* Set if we have run the /etc/ppp/auth-up script. */
yueee_yt 0:7766f6712673 109 static int did_authup; /* @todo, we don't need this in lwip*/
yueee_yt 0:7766f6712673 110
yueee_yt 0:7766f6712673 111 /* List of addresses which the peer may use. */
yueee_yt 0:7766f6712673 112 static struct wordlist *addresses[NUM_PPP];
yueee_yt 0:7766f6712673 113
yueee_yt 0:7766f6712673 114 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 115 /* Wordlist giving addresses which the peer may use
yueee_yt 0:7766f6712673 116 without authenticating itself. */
yueee_yt 0:7766f6712673 117 static struct wordlist *noauth_addrs;
yueee_yt 0:7766f6712673 118
yueee_yt 0:7766f6712673 119 /* Extra options to apply, from the secrets file entry for the peer. */
yueee_yt 0:7766f6712673 120 static struct wordlist *extra_options;
yueee_yt 0:7766f6712673 121 #endif /* UNUSED */
yueee_yt 0:7766f6712673 122
yueee_yt 0:7766f6712673 123 /* Number of network protocols which we have opened. */
yueee_yt 0:7766f6712673 124 static int num_np_open;
yueee_yt 0:7766f6712673 125
yueee_yt 0:7766f6712673 126 /* Number of network protocols which have come up. */
yueee_yt 0:7766f6712673 127 static int num_np_up;
yueee_yt 0:7766f6712673 128
yueee_yt 0:7766f6712673 129 #if PAP_SUPPORT || CHAP_SUPPORT
yueee_yt 0:7766f6712673 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
yueee_yt 0:7766f6712673 131 static int passwd_from_file;
yueee_yt 0:7766f6712673 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 133
yueee_yt 0:7766f6712673 134 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 135 /* Set if we require authentication only because we have a default route. */
yueee_yt 0:7766f6712673 136 static bool default_auth;
yueee_yt 0:7766f6712673 137
yueee_yt 0:7766f6712673 138 /* Hook to enable a plugin to control the idle time limit */
yueee_yt 0:7766f6712673 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
yueee_yt 0:7766f6712673 140
yueee_yt 0:7766f6712673 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
yueee_yt 0:7766f6712673 142 int (*pap_check_hook) __P((void)) = NULL;
yueee_yt 0:7766f6712673 143
yueee_yt 0:7766f6712673 144 /* Hook for a plugin to check the PAP user and password */
yueee_yt 0:7766f6712673 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
yueee_yt 0:7766f6712673 146 struct wordlist **paddrs,
yueee_yt 0:7766f6712673 147 struct wordlist **popts)) = NULL;
yueee_yt 0:7766f6712673 148
yueee_yt 0:7766f6712673 149 /* Hook for a plugin to know about the PAP user logout */
yueee_yt 0:7766f6712673 150 void (*pap_logout_hook) __P((void)) = NULL;
yueee_yt 0:7766f6712673 151
yueee_yt 0:7766f6712673 152 /* Hook for a plugin to get the PAP password for authenticating us */
yueee_yt 0:7766f6712673 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
yueee_yt 0:7766f6712673 154
yueee_yt 0:7766f6712673 155 /*
yueee_yt 0:7766f6712673 156 * This is used to ensure that we don't start an auth-up/down
yueee_yt 0:7766f6712673 157 * script while one is already running.
yueee_yt 0:7766f6712673 158 */
yueee_yt 0:7766f6712673 159 enum script_state {
yueee_yt 0:7766f6712673 160 s_down,
yueee_yt 0:7766f6712673 161 s_up
yueee_yt 0:7766f6712673 162 };
yueee_yt 0:7766f6712673 163
yueee_yt 0:7766f6712673 164 static enum script_state auth_state = s_down;
yueee_yt 0:7766f6712673 165 static enum script_state auth_script_state = s_down;
yueee_yt 0:7766f6712673 166 static pid_t auth_script_pid = 0;
yueee_yt 0:7766f6712673 167
yueee_yt 0:7766f6712673 168 /*
yueee_yt 0:7766f6712673 169 * Option variables.
yueee_yt 0:7766f6712673 170 * lwip: some of these are present in the ppp_settings structure
yueee_yt 0:7766f6712673 171 */
yueee_yt 0:7766f6712673 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
yueee_yt 0:7766f6712673 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
yueee_yt 0:7766f6712673 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
yueee_yt 0:7766f6712673 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
yueee_yt 0:7766f6712673 176 bool usehostname = 0; /* Use hostname for our_name */
yueee_yt 0:7766f6712673 177 bool auth_required = 0; /* Always require authentication from peer */
yueee_yt 0:7766f6712673 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
yueee_yt 0:7766f6712673 179 bool explicit_remote = 0; /* User specified explicit remote name */
yueee_yt 0:7766f6712673 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
yueee_yt 0:7766f6712673 181
yueee_yt 0:7766f6712673 182 #endif /* UNUSED */
yueee_yt 0:7766f6712673 183
yueee_yt 0:7766f6712673 184 /* Bits in auth_pending[] */
yueee_yt 0:7766f6712673 185 #define PAP_WITHPEER 1
yueee_yt 0:7766f6712673 186 #define PAP_PEER 2
yueee_yt 0:7766f6712673 187 #define CHAP_WITHPEER 4
yueee_yt 0:7766f6712673 188 #define CHAP_PEER 8
yueee_yt 0:7766f6712673 189
yueee_yt 0:7766f6712673 190 /* @todo, move this somewhere */
yueee_yt 0:7766f6712673 191 /* Used for storing a sequence of words. Usually malloced. */
yueee_yt 0:7766f6712673 192 struct wordlist {
yueee_yt 0:7766f6712673 193 struct wordlist *next;
yueee_yt 0:7766f6712673 194 char word[1];
yueee_yt 0:7766f6712673 195 };
yueee_yt 0:7766f6712673 196
yueee_yt 0:7766f6712673 197
yueee_yt 0:7766f6712673 198 extern char *crypt (const char *, const char *);
yueee_yt 0:7766f6712673 199
yueee_yt 0:7766f6712673 200 /* Prototypes for procedures local to this file. */
yueee_yt 0:7766f6712673 201
yueee_yt 0:7766f6712673 202 static void network_phase (int);
yueee_yt 0:7766f6712673 203 static void check_idle (void *);
yueee_yt 0:7766f6712673 204 static void connect_time_expired (void *);
yueee_yt 0:7766f6712673 205 #if 0
yueee_yt 0:7766f6712673 206 static int plogin (char *, char *, char **, int *);
yueee_yt 0:7766f6712673 207 #endif
yueee_yt 0:7766f6712673 208 static void plogout (void);
yueee_yt 0:7766f6712673 209 static int null_login (int);
yueee_yt 0:7766f6712673 210 static int get_pap_passwd (int, char *, char *);
yueee_yt 0:7766f6712673 211 static int have_pap_secret (void);
yueee_yt 0:7766f6712673 212 static int have_chap_secret (char *, char *, u32_t);
yueee_yt 0:7766f6712673 213 static int ip_addr_check (u32_t, struct wordlist *);
yueee_yt 0:7766f6712673 214
yueee_yt 0:7766f6712673 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 216 static int scan_authfile (FILE *, char *, char *, char *,
yueee_yt 0:7766f6712673 217 struct wordlist **, struct wordlist **,
yueee_yt 0:7766f6712673 218 char *);
yueee_yt 0:7766f6712673 219 static void free_wordlist (struct wordlist *);
yueee_yt 0:7766f6712673 220 static void auth_script (char *);
yueee_yt 0:7766f6712673 221 static void auth_script_done (void *);
yueee_yt 0:7766f6712673 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
yueee_yt 0:7766f6712673 223 static int some_ip_ok (struct wordlist *);
yueee_yt 0:7766f6712673 224 static int setupapfile (char **);
yueee_yt 0:7766f6712673 225 static int privgroup (char **);
yueee_yt 0:7766f6712673 226 static int set_noauth_addr (char **);
yueee_yt 0:7766f6712673 227 static void check_access (FILE *, char *);
yueee_yt 0:7766f6712673 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 229
yueee_yt 0:7766f6712673 230 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 231 /*
yueee_yt 0:7766f6712673 232 * Authentication-related options.
yueee_yt 0:7766f6712673 233 */
yueee_yt 0:7766f6712673 234 option_t auth_options[] = {
yueee_yt 0:7766f6712673 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
yueee_yt 0:7766f6712673 236 "Require PAP authentication from peer", 1, &auth_required },
yueee_yt 0:7766f6712673 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
yueee_yt 0:7766f6712673 238 "Require PAP authentication from peer", 1, &auth_required },
yueee_yt 0:7766f6712673 239 { "refuse-pap", o_bool, &refuse_pap,
yueee_yt 0:7766f6712673 240 "Don't agree to auth to peer with PAP", 1 },
yueee_yt 0:7766f6712673 241 { "-pap", o_bool, &refuse_pap,
yueee_yt 0:7766f6712673 242 "Don't allow PAP authentication with peer", 1 },
yueee_yt 0:7766f6712673 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
yueee_yt 0:7766f6712673 244 "Require CHAP authentication from peer", 1, &auth_required },
yueee_yt 0:7766f6712673 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
yueee_yt 0:7766f6712673 246 "Require CHAP authentication from peer", 1, &auth_required },
yueee_yt 0:7766f6712673 247 { "refuse-chap", o_bool, &refuse_chap,
yueee_yt 0:7766f6712673 248 "Don't agree to auth to peer with CHAP", 1 },
yueee_yt 0:7766f6712673 249 { "-chap", o_bool, &refuse_chap,
yueee_yt 0:7766f6712673 250 "Don't allow CHAP authentication with peer", 1 },
yueee_yt 0:7766f6712673 251 { "name", o_string, our_name,
yueee_yt 0:7766f6712673 252 "Set local name for authentication",
yueee_yt 0:7766f6712673 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
yueee_yt 0:7766f6712673 254 { "user", o_string, user,
yueee_yt 0:7766f6712673 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
yueee_yt 0:7766f6712673 256 { "usehostname", o_bool, &usehostname,
yueee_yt 0:7766f6712673 257 "Must use hostname for authentication", 1 },
yueee_yt 0:7766f6712673 258 { "remotename", o_string, remote_name,
yueee_yt 0:7766f6712673 259 "Set remote name for authentication", OPT_STATIC,
yueee_yt 0:7766f6712673 260 &explicit_remote, MAXNAMELEN },
yueee_yt 0:7766f6712673 261 { "auth", o_bool, &auth_required,
yueee_yt 0:7766f6712673 262 "Require authentication from peer", 1 },
yueee_yt 0:7766f6712673 263 { "noauth", o_bool, &auth_required,
yueee_yt 0:7766f6712673 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
yueee_yt 0:7766f6712673 265 { "login", o_bool, &uselogin,
yueee_yt 0:7766f6712673 266 "Use system password database for PAP", 1 },
yueee_yt 0:7766f6712673 267 { "papcrypt", o_bool, &cryptpap,
yueee_yt 0:7766f6712673 268 "PAP passwords are encrypted", 1 },
yueee_yt 0:7766f6712673 269 { "+ua", o_special, (void *)setupapfile,
yueee_yt 0:7766f6712673 270 "Get PAP user and password from file" },
yueee_yt 0:7766f6712673 271 { "password", o_string, passwd,
yueee_yt 0:7766f6712673 272 "Password for authenticating us to the peer", OPT_STATIC,
yueee_yt 0:7766f6712673 273 NULL, MAXSECRETLEN },
yueee_yt 0:7766f6712673 274 { "privgroup", o_special, (void *)privgroup,
yueee_yt 0:7766f6712673 275 "Allow group members to use privileged options", OPT_PRIV },
yueee_yt 0:7766f6712673 276 { "allow-ip", o_special, (void *)set_noauth_addr,
yueee_yt 0:7766f6712673 277 "Set IP address(es) which can be used without authentication",
yueee_yt 0:7766f6712673 278 OPT_PRIV },
yueee_yt 0:7766f6712673 279 { NULL }
yueee_yt 0:7766f6712673 280 };
yueee_yt 0:7766f6712673 281 #endif /* UNUSED */
yueee_yt 0:7766f6712673 282 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 283 /*
yueee_yt 0:7766f6712673 284 * setupapfile - specifies UPAP info for authenticating with peer.
yueee_yt 0:7766f6712673 285 */
yueee_yt 0:7766f6712673 286 static int
yueee_yt 0:7766f6712673 287 setupapfile(char **argv)
yueee_yt 0:7766f6712673 288 {
yueee_yt 0:7766f6712673 289 FILE * ufile;
yueee_yt 0:7766f6712673 290 int l;
yueee_yt 0:7766f6712673 291
yueee_yt 0:7766f6712673 292 lcp_allowoptions[0].neg_upap = 1;
yueee_yt 0:7766f6712673 293
yueee_yt 0:7766f6712673 294 /* open user info file */
yueee_yt 0:7766f6712673 295 seteuid(getuid());
yueee_yt 0:7766f6712673 296 ufile = fopen(*argv, "r");
yueee_yt 0:7766f6712673 297 seteuid(0);
yueee_yt 0:7766f6712673 298 if (ufile == NULL) {
yueee_yt 0:7766f6712673 299 option_error("unable to open user login data file %s", *argv);
yueee_yt 0:7766f6712673 300 return 0;
yueee_yt 0:7766f6712673 301 }
yueee_yt 0:7766f6712673 302 check_access(ufile, *argv);
yueee_yt 0:7766f6712673 303
yueee_yt 0:7766f6712673 304 /* get username */
yueee_yt 0:7766f6712673 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
yueee_yt 0:7766f6712673 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
yueee_yt 0:7766f6712673 307 option_error("unable to read user login data file %s", *argv);
yueee_yt 0:7766f6712673 308 return 0;
yueee_yt 0:7766f6712673 309 }
yueee_yt 0:7766f6712673 310 fclose(ufile);
yueee_yt 0:7766f6712673 311
yueee_yt 0:7766f6712673 312 /* get rid of newlines */
yueee_yt 0:7766f6712673 313 l = strlen(user);
yueee_yt 0:7766f6712673 314 if (l > 0 && user[l-1] == '\n')
yueee_yt 0:7766f6712673 315 user[l-1] = 0;
yueee_yt 0:7766f6712673 316 l = strlen(passwd);
yueee_yt 0:7766f6712673 317 if (l > 0 && passwd[l-1] == '\n')
yueee_yt 0:7766f6712673 318 passwd[l-1] = 0;
yueee_yt 0:7766f6712673 319
yueee_yt 0:7766f6712673 320 return (1);
yueee_yt 0:7766f6712673 321 }
yueee_yt 0:7766f6712673 322 #endif /* UNUSED */
yueee_yt 0:7766f6712673 323
yueee_yt 0:7766f6712673 324 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 325 /*
yueee_yt 0:7766f6712673 326 * privgroup - allow members of the group to have privileged access.
yueee_yt 0:7766f6712673 327 */
yueee_yt 0:7766f6712673 328 static int
yueee_yt 0:7766f6712673 329 privgroup(char **argv)
yueee_yt 0:7766f6712673 330 {
yueee_yt 0:7766f6712673 331 struct group *g;
yueee_yt 0:7766f6712673 332 int i;
yueee_yt 0:7766f6712673 333
yueee_yt 0:7766f6712673 334 g = getgrnam(*argv);
yueee_yt 0:7766f6712673 335 if (g == 0) {
yueee_yt 0:7766f6712673 336 option_error("group %s is unknown", *argv);
yueee_yt 0:7766f6712673 337 return 0;
yueee_yt 0:7766f6712673 338 }
yueee_yt 0:7766f6712673 339 for (i = 0; i < ngroups; ++i) {
yueee_yt 0:7766f6712673 340 if (groups[i] == g->gr_gid) {
yueee_yt 0:7766f6712673 341 privileged = 1;
yueee_yt 0:7766f6712673 342 break;
yueee_yt 0:7766f6712673 343 }
yueee_yt 0:7766f6712673 344 }
yueee_yt 0:7766f6712673 345 return 1;
yueee_yt 0:7766f6712673 346 }
yueee_yt 0:7766f6712673 347 #endif
yueee_yt 0:7766f6712673 348
yueee_yt 0:7766f6712673 349 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 350 /*
yueee_yt 0:7766f6712673 351 * set_noauth_addr - set address(es) that can be used without authentication.
yueee_yt 0:7766f6712673 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
yueee_yt 0:7766f6712673 353 */
yueee_yt 0:7766f6712673 354 static int
yueee_yt 0:7766f6712673 355 set_noauth_addr(char **argv)
yueee_yt 0:7766f6712673 356 {
yueee_yt 0:7766f6712673 357 char *addr = *argv;
yueee_yt 0:7766f6712673 358 int l = strlen(addr);
yueee_yt 0:7766f6712673 359 struct wordlist *wp;
yueee_yt 0:7766f6712673 360
yueee_yt 0:7766f6712673 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
yueee_yt 0:7766f6712673 362 if (wp == NULL)
yueee_yt 0:7766f6712673 363 novm("allow-ip argument");
yueee_yt 0:7766f6712673 364 wp->word = (char *) (wp + 1);
yueee_yt 0:7766f6712673 365 wp->next = noauth_addrs;
yueee_yt 0:7766f6712673 366 BCOPY(addr, wp->word, l);
yueee_yt 0:7766f6712673 367 noauth_addrs = wp;
yueee_yt 0:7766f6712673 368 return 1;
yueee_yt 0:7766f6712673 369 }
yueee_yt 0:7766f6712673 370 #endif /* UNUSED */
yueee_yt 0:7766f6712673 371
yueee_yt 0:7766f6712673 372 /*
yueee_yt 0:7766f6712673 373 * An Open on LCP has requested a change from Dead to Establish phase.
yueee_yt 0:7766f6712673 374 * Do what's necessary to bring the physical layer up.
yueee_yt 0:7766f6712673 375 */
yueee_yt 0:7766f6712673 376 void
yueee_yt 0:7766f6712673 377 link_required(int unit)
yueee_yt 0:7766f6712673 378 {
yueee_yt 0:7766f6712673 379 LWIP_UNUSED_ARG(unit);
yueee_yt 0:7766f6712673 380
yueee_yt 0:7766f6712673 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
yueee_yt 0:7766f6712673 382 }
yueee_yt 0:7766f6712673 383
yueee_yt 0:7766f6712673 384 /*
yueee_yt 0:7766f6712673 385 * LCP has terminated the link; go to the Dead phase and take the
yueee_yt 0:7766f6712673 386 * physical layer down.
yueee_yt 0:7766f6712673 387 */
yueee_yt 0:7766f6712673 388 void
yueee_yt 0:7766f6712673 389 link_terminated(int unit)
yueee_yt 0:7766f6712673 390 {
yueee_yt 0:7766f6712673 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
yueee_yt 0:7766f6712673 392 if (lcp_phase[unit] == PHASE_DEAD) {
yueee_yt 0:7766f6712673 393 return;
yueee_yt 0:7766f6712673 394 }
yueee_yt 0:7766f6712673 395 if (logged_in) {
yueee_yt 0:7766f6712673 396 plogout();
yueee_yt 0:7766f6712673 397 }
yueee_yt 0:7766f6712673 398 lcp_phase[unit] = PHASE_DEAD;
yueee_yt 0:7766f6712673 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
yueee_yt 0:7766f6712673 400 pppLinkTerminated(unit);
yueee_yt 0:7766f6712673 401 }
yueee_yt 0:7766f6712673 402
yueee_yt 0:7766f6712673 403 /*
yueee_yt 0:7766f6712673 404 * LCP has gone down; it will either die or try to re-establish.
yueee_yt 0:7766f6712673 405 */
yueee_yt 0:7766f6712673 406 void
yueee_yt 0:7766f6712673 407 link_down(int unit)
yueee_yt 0:7766f6712673 408 {
yueee_yt 0:7766f6712673 409 int i;
yueee_yt 0:7766f6712673 410 struct protent *protp;
yueee_yt 0:7766f6712673 411
yueee_yt 0:7766f6712673 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
yueee_yt 0:7766f6712673 413
yueee_yt 0:7766f6712673 414 if (did_authup) {
yueee_yt 0:7766f6712673 415 /* XXX Do link down processing. */
yueee_yt 0:7766f6712673 416 did_authup = 0;
yueee_yt 0:7766f6712673 417 }
yueee_yt 0:7766f6712673 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
yueee_yt 0:7766f6712673 419 if (!protp->enabled_flag) {
yueee_yt 0:7766f6712673 420 continue;
yueee_yt 0:7766f6712673 421 }
yueee_yt 0:7766f6712673 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
yueee_yt 0:7766f6712673 423 (*protp->lowerdown)(unit);
yueee_yt 0:7766f6712673 424 }
yueee_yt 0:7766f6712673 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
yueee_yt 0:7766f6712673 426 (*protp->close)(unit, "LCP down");
yueee_yt 0:7766f6712673 427 }
yueee_yt 0:7766f6712673 428 }
yueee_yt 0:7766f6712673 429 num_np_open = 0; /* number of network protocols we have opened */
yueee_yt 0:7766f6712673 430 num_np_up = 0; /* Number of network protocols which have come up */
yueee_yt 0:7766f6712673 431
yueee_yt 0:7766f6712673 432 if (lcp_phase[unit] != PHASE_DEAD) {
yueee_yt 0:7766f6712673 433 lcp_phase[unit] = PHASE_TERMINATE;
yueee_yt 0:7766f6712673 434 }
yueee_yt 0:7766f6712673 435 pppLinkDown(unit);
yueee_yt 0:7766f6712673 436 }
yueee_yt 0:7766f6712673 437
yueee_yt 0:7766f6712673 438 /*
yueee_yt 0:7766f6712673 439 * The link is established.
yueee_yt 0:7766f6712673 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
yueee_yt 0:7766f6712673 441 */
yueee_yt 0:7766f6712673 442 void
yueee_yt 0:7766f6712673 443 link_established(int unit)
yueee_yt 0:7766f6712673 444 {
yueee_yt 0:7766f6712673 445 int auth;
yueee_yt 0:7766f6712673 446 int i;
yueee_yt 0:7766f6712673 447 struct protent *protp;
yueee_yt 0:7766f6712673 448 lcp_options *wo = &lcp_wantoptions[unit];
yueee_yt 0:7766f6712673 449 lcp_options *go = &lcp_gotoptions[unit];
yueee_yt 0:7766f6712673 450 #if PAP_SUPPORT || CHAP_SUPPORT
yueee_yt 0:7766f6712673 451 lcp_options *ho = &lcp_hisoptions[unit];
yueee_yt 0:7766f6712673 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 453
yueee_yt 0:7766f6712673 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
yueee_yt 0:7766f6712673 455 /*
yueee_yt 0:7766f6712673 456 * Tell higher-level protocols that LCP is up.
yueee_yt 0:7766f6712673 457 */
yueee_yt 0:7766f6712673 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
yueee_yt 0:7766f6712673 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
yueee_yt 0:7766f6712673 460 (*protp->lowerup)(unit);
yueee_yt 0:7766f6712673 461 }
yueee_yt 0:7766f6712673 462 }
yueee_yt 0:7766f6712673 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
yueee_yt 0:7766f6712673 464 /*
yueee_yt 0:7766f6712673 465 * We wanted the peer to authenticate itself, and it refused:
yueee_yt 0:7766f6712673 466 * treat it as though it authenticated with PAP using a username
yueee_yt 0:7766f6712673 467 * of "" and a password of "". If that's not OK, boot it out.
yueee_yt 0:7766f6712673 468 */
yueee_yt 0:7766f6712673 469 if (!wo->neg_upap || !null_login(unit)) {
yueee_yt 0:7766f6712673 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
yueee_yt 0:7766f6712673 471 lcp_close(unit, "peer refused to authenticate");
yueee_yt 0:7766f6712673 472 return;
yueee_yt 0:7766f6712673 473 }
yueee_yt 0:7766f6712673 474 }
yueee_yt 0:7766f6712673 475
yueee_yt 0:7766f6712673 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
yueee_yt 0:7766f6712673 477 auth = 0;
yueee_yt 0:7766f6712673 478 #if CHAP_SUPPORT
yueee_yt 0:7766f6712673 479 if (go->neg_chap) {
yueee_yt 0:7766f6712673 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
yueee_yt 0:7766f6712673 481 auth |= CHAP_PEER;
yueee_yt 0:7766f6712673 482 }
yueee_yt 0:7766f6712673 483 #endif /* CHAP_SUPPORT */
yueee_yt 0:7766f6712673 484 #if PAP_SUPPORT && CHAP_SUPPORT
yueee_yt 0:7766f6712673 485 else
yueee_yt 0:7766f6712673 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
yueee_yt 0:7766f6712673 487 #if PAP_SUPPORT
yueee_yt 0:7766f6712673 488 if (go->neg_upap) {
yueee_yt 0:7766f6712673 489 upap_authpeer(unit);
yueee_yt 0:7766f6712673 490 auth |= PAP_PEER;
yueee_yt 0:7766f6712673 491 }
yueee_yt 0:7766f6712673 492 #endif /* PAP_SUPPORT */
yueee_yt 0:7766f6712673 493 #if CHAP_SUPPORT
yueee_yt 0:7766f6712673 494 if (ho->neg_chap) {
yueee_yt 0:7766f6712673 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
yueee_yt 0:7766f6712673 496 auth |= CHAP_WITHPEER;
yueee_yt 0:7766f6712673 497 }
yueee_yt 0:7766f6712673 498 #endif /* CHAP_SUPPORT */
yueee_yt 0:7766f6712673 499 #if PAP_SUPPORT && CHAP_SUPPORT
yueee_yt 0:7766f6712673 500 else
yueee_yt 0:7766f6712673 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
yueee_yt 0:7766f6712673 502 #if PAP_SUPPORT
yueee_yt 0:7766f6712673 503 if (ho->neg_upap) {
yueee_yt 0:7766f6712673 504 if (ppp_settings.passwd[0] == 0) {
yueee_yt 0:7766f6712673 505 passwd_from_file = 1;
yueee_yt 0:7766f6712673 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
yueee_yt 0:7766f6712673 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
yueee_yt 0:7766f6712673 508 }
yueee_yt 0:7766f6712673 509 }
yueee_yt 0:7766f6712673 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
yueee_yt 0:7766f6712673 511 auth |= PAP_WITHPEER;
yueee_yt 0:7766f6712673 512 }
yueee_yt 0:7766f6712673 513 #endif /* PAP_SUPPORT */
yueee_yt 0:7766f6712673 514 auth_pending[unit] = auth;
yueee_yt 0:7766f6712673 515
yueee_yt 0:7766f6712673 516 if (!auth) {
yueee_yt 0:7766f6712673 517 network_phase(unit);
yueee_yt 0:7766f6712673 518 }
yueee_yt 0:7766f6712673 519 }
yueee_yt 0:7766f6712673 520
yueee_yt 0:7766f6712673 521 /*
yueee_yt 0:7766f6712673 522 * Proceed to the network phase.
yueee_yt 0:7766f6712673 523 */
yueee_yt 0:7766f6712673 524 static void
yueee_yt 0:7766f6712673 525 network_phase(int unit)
yueee_yt 0:7766f6712673 526 {
yueee_yt 0:7766f6712673 527 int i;
yueee_yt 0:7766f6712673 528 struct protent *protp;
yueee_yt 0:7766f6712673 529 lcp_options *go = &lcp_gotoptions[unit];
yueee_yt 0:7766f6712673 530
yueee_yt 0:7766f6712673 531 /*
yueee_yt 0:7766f6712673 532 * If the peer had to authenticate, run the auth-up script now.
yueee_yt 0:7766f6712673 533 */
yueee_yt 0:7766f6712673 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
yueee_yt 0:7766f6712673 535 /* XXX Do setup for peer authentication. */
yueee_yt 0:7766f6712673 536 did_authup = 1;
yueee_yt 0:7766f6712673 537 }
yueee_yt 0:7766f6712673 538
yueee_yt 0:7766f6712673 539 #if CBCP_SUPPORT
yueee_yt 0:7766f6712673 540 /*
yueee_yt 0:7766f6712673 541 * If we negotiated callback, do it now.
yueee_yt 0:7766f6712673 542 */
yueee_yt 0:7766f6712673 543 if (go->neg_cbcp) {
yueee_yt 0:7766f6712673 544 lcp_phase[unit] = PHASE_CALLBACK;
yueee_yt 0:7766f6712673 545 (*cbcp_protent.open)(unit);
yueee_yt 0:7766f6712673 546 return;
yueee_yt 0:7766f6712673 547 }
yueee_yt 0:7766f6712673 548 #endif /* CBCP_SUPPORT */
yueee_yt 0:7766f6712673 549
yueee_yt 0:7766f6712673 550 lcp_phase[unit] = PHASE_NETWORK;
yueee_yt 0:7766f6712673 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
yueee_yt 0:7766f6712673 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
yueee_yt 0:7766f6712673 553 (*protp->open)(unit);
yueee_yt 0:7766f6712673 554 if (protp->protocol != PPP_CCP) {
yueee_yt 0:7766f6712673 555 ++num_np_open;
yueee_yt 0:7766f6712673 556 }
yueee_yt 0:7766f6712673 557 }
yueee_yt 0:7766f6712673 558 }
yueee_yt 0:7766f6712673 559
yueee_yt 0:7766f6712673 560 if (num_np_open == 0) {
yueee_yt 0:7766f6712673 561 /* nothing to do */
yueee_yt 0:7766f6712673 562 lcp_close(0, "No network protocols running");
yueee_yt 0:7766f6712673 563 }
yueee_yt 0:7766f6712673 564 }
yueee_yt 0:7766f6712673 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
yueee_yt 0:7766f6712673 566
yueee_yt 0:7766f6712673 567 /*
yueee_yt 0:7766f6712673 568 * The peer has failed to authenticate himself using `protocol'.
yueee_yt 0:7766f6712673 569 */
yueee_yt 0:7766f6712673 570 void
yueee_yt 0:7766f6712673 571 auth_peer_fail(int unit, u16_t protocol)
yueee_yt 0:7766f6712673 572 {
yueee_yt 0:7766f6712673 573 LWIP_UNUSED_ARG(protocol);
yueee_yt 0:7766f6712673 574
yueee_yt 0:7766f6712673 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
yueee_yt 0:7766f6712673 576 /*
yueee_yt 0:7766f6712673 577 * Authentication failure: take the link down
yueee_yt 0:7766f6712673 578 */
yueee_yt 0:7766f6712673 579 lcp_close(unit, "Authentication failed");
yueee_yt 0:7766f6712673 580 }
yueee_yt 0:7766f6712673 581
yueee_yt 0:7766f6712673 582
yueee_yt 0:7766f6712673 583 #if PAP_SUPPORT || CHAP_SUPPORT
yueee_yt 0:7766f6712673 584 /*
yueee_yt 0:7766f6712673 585 * The peer has been successfully authenticated using `protocol'.
yueee_yt 0:7766f6712673 586 */
yueee_yt 0:7766f6712673 587 void
yueee_yt 0:7766f6712673 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
yueee_yt 0:7766f6712673 589 {
yueee_yt 0:7766f6712673 590 int pbit;
yueee_yt 0:7766f6712673 591
yueee_yt 0:7766f6712673 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
yueee_yt 0:7766f6712673 593 switch (protocol) {
yueee_yt 0:7766f6712673 594 case PPP_CHAP:
yueee_yt 0:7766f6712673 595 pbit = CHAP_PEER;
yueee_yt 0:7766f6712673 596 break;
yueee_yt 0:7766f6712673 597 case PPP_PAP:
yueee_yt 0:7766f6712673 598 pbit = PAP_PEER;
yueee_yt 0:7766f6712673 599 break;
yueee_yt 0:7766f6712673 600 default:
yueee_yt 0:7766f6712673 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
yueee_yt 0:7766f6712673 602 return;
yueee_yt 0:7766f6712673 603 }
yueee_yt 0:7766f6712673 604
yueee_yt 0:7766f6712673 605 /*
yueee_yt 0:7766f6712673 606 * Save the authenticated name of the peer for later.
yueee_yt 0:7766f6712673 607 */
yueee_yt 0:7766f6712673 608 if (namelen > (int)sizeof(peer_authname) - 1) {
yueee_yt 0:7766f6712673 609 namelen = sizeof(peer_authname) - 1;
yueee_yt 0:7766f6712673 610 }
yueee_yt 0:7766f6712673 611 BCOPY(name, peer_authname, namelen);
yueee_yt 0:7766f6712673 612 peer_authname[namelen] = 0;
yueee_yt 0:7766f6712673 613
yueee_yt 0:7766f6712673 614 /*
yueee_yt 0:7766f6712673 615 * If there is no more authentication still to be done,
yueee_yt 0:7766f6712673 616 * proceed to the network (or callback) phase.
yueee_yt 0:7766f6712673 617 */
yueee_yt 0:7766f6712673 618 if ((auth_pending[unit] &= ~pbit) == 0) {
yueee_yt 0:7766f6712673 619 network_phase(unit);
yueee_yt 0:7766f6712673 620 }
yueee_yt 0:7766f6712673 621 }
yueee_yt 0:7766f6712673 622
yueee_yt 0:7766f6712673 623 /*
yueee_yt 0:7766f6712673 624 * We have failed to authenticate ourselves to the peer using `protocol'.
yueee_yt 0:7766f6712673 625 */
yueee_yt 0:7766f6712673 626 void
yueee_yt 0:7766f6712673 627 auth_withpeer_fail(int unit, u16_t protocol)
yueee_yt 0:7766f6712673 628 {
yueee_yt 0:7766f6712673 629 int errCode = PPPERR_AUTHFAIL;
yueee_yt 0:7766f6712673 630
yueee_yt 0:7766f6712673 631 LWIP_UNUSED_ARG(protocol);
yueee_yt 0:7766f6712673 632
yueee_yt 0:7766f6712673 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
yueee_yt 0:7766f6712673 634 if (passwd_from_file) {
yueee_yt 0:7766f6712673 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
yueee_yt 0:7766f6712673 636 }
yueee_yt 0:7766f6712673 637
yueee_yt 0:7766f6712673 638 /*
yueee_yt 0:7766f6712673 639 * We've failed to authenticate ourselves to our peer.
yueee_yt 0:7766f6712673 640 * He'll probably take the link down, and there's not much
yueee_yt 0:7766f6712673 641 * we can do except wait for that.
yueee_yt 0:7766f6712673 642 */
yueee_yt 0:7766f6712673 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
yueee_yt 0:7766f6712673 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
yueee_yt 0:7766f6712673 645 }
yueee_yt 0:7766f6712673 646
yueee_yt 0:7766f6712673 647 /*
yueee_yt 0:7766f6712673 648 * We have successfully authenticated ourselves with the peer using `protocol'.
yueee_yt 0:7766f6712673 649 */
yueee_yt 0:7766f6712673 650 void
yueee_yt 0:7766f6712673 651 auth_withpeer_success(int unit, u16_t protocol)
yueee_yt 0:7766f6712673 652 {
yueee_yt 0:7766f6712673 653 int pbit;
yueee_yt 0:7766f6712673 654
yueee_yt 0:7766f6712673 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
yueee_yt 0:7766f6712673 656 switch (protocol) {
yueee_yt 0:7766f6712673 657 case PPP_CHAP:
yueee_yt 0:7766f6712673 658 pbit = CHAP_WITHPEER;
yueee_yt 0:7766f6712673 659 break;
yueee_yt 0:7766f6712673 660 case PPP_PAP:
yueee_yt 0:7766f6712673 661 if (passwd_from_file) {
yueee_yt 0:7766f6712673 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
yueee_yt 0:7766f6712673 663 }
yueee_yt 0:7766f6712673 664 pbit = PAP_WITHPEER;
yueee_yt 0:7766f6712673 665 break;
yueee_yt 0:7766f6712673 666 default:
yueee_yt 0:7766f6712673 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
yueee_yt 0:7766f6712673 668 pbit = 0;
yueee_yt 0:7766f6712673 669 }
yueee_yt 0:7766f6712673 670
yueee_yt 0:7766f6712673 671 /*
yueee_yt 0:7766f6712673 672 * If there is no more authentication still being done,
yueee_yt 0:7766f6712673 673 * proceed to the network (or callback) phase.
yueee_yt 0:7766f6712673 674 */
yueee_yt 0:7766f6712673 675 if ((auth_pending[unit] &= ~pbit) == 0) {
yueee_yt 0:7766f6712673 676 network_phase(unit);
yueee_yt 0:7766f6712673 677 }
yueee_yt 0:7766f6712673 678 }
yueee_yt 0:7766f6712673 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 680
yueee_yt 0:7766f6712673 681
yueee_yt 0:7766f6712673 682 /*
yueee_yt 0:7766f6712673 683 * np_up - a network protocol has come up.
yueee_yt 0:7766f6712673 684 */
yueee_yt 0:7766f6712673 685 void
yueee_yt 0:7766f6712673 686 np_up(int unit, u16_t proto)
yueee_yt 0:7766f6712673 687 {
yueee_yt 0:7766f6712673 688 LWIP_UNUSED_ARG(unit);
yueee_yt 0:7766f6712673 689 LWIP_UNUSED_ARG(proto);
yueee_yt 0:7766f6712673 690
yueee_yt 0:7766f6712673 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
yueee_yt 0:7766f6712673 692 if (num_np_up == 0) {
yueee_yt 0:7766f6712673 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
yueee_yt 0:7766f6712673 694 /*
yueee_yt 0:7766f6712673 695 * At this point we consider that the link has come up successfully.
yueee_yt 0:7766f6712673 696 */
yueee_yt 0:7766f6712673 697 if (ppp_settings.idle_time_limit > 0) {
yueee_yt 0:7766f6712673 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
yueee_yt 0:7766f6712673 699 }
yueee_yt 0:7766f6712673 700
yueee_yt 0:7766f6712673 701 /*
yueee_yt 0:7766f6712673 702 * Set a timeout to close the connection once the maximum
yueee_yt 0:7766f6712673 703 * connect time has expired.
yueee_yt 0:7766f6712673 704 */
yueee_yt 0:7766f6712673 705 if (ppp_settings.maxconnect > 0) {
yueee_yt 0:7766f6712673 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
yueee_yt 0:7766f6712673 707 }
yueee_yt 0:7766f6712673 708 }
yueee_yt 0:7766f6712673 709 ++num_np_up;
yueee_yt 0:7766f6712673 710 }
yueee_yt 0:7766f6712673 711
yueee_yt 0:7766f6712673 712 /*
yueee_yt 0:7766f6712673 713 * np_down - a network protocol has gone down.
yueee_yt 0:7766f6712673 714 */
yueee_yt 0:7766f6712673 715 void
yueee_yt 0:7766f6712673 716 np_down(int unit, u16_t proto)
yueee_yt 0:7766f6712673 717 {
yueee_yt 0:7766f6712673 718 LWIP_UNUSED_ARG(unit);
yueee_yt 0:7766f6712673 719 LWIP_UNUSED_ARG(proto);
yueee_yt 0:7766f6712673 720
yueee_yt 0:7766f6712673 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
yueee_yt 0:7766f6712673 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
yueee_yt 0:7766f6712673 723 UNTIMEOUT(check_idle, NULL);
yueee_yt 0:7766f6712673 724 }
yueee_yt 0:7766f6712673 725 }
yueee_yt 0:7766f6712673 726
yueee_yt 0:7766f6712673 727 /*
yueee_yt 0:7766f6712673 728 * np_finished - a network protocol has finished using the link.
yueee_yt 0:7766f6712673 729 */
yueee_yt 0:7766f6712673 730 void
yueee_yt 0:7766f6712673 731 np_finished(int unit, u16_t proto)
yueee_yt 0:7766f6712673 732 {
yueee_yt 0:7766f6712673 733 LWIP_UNUSED_ARG(unit);
yueee_yt 0:7766f6712673 734 LWIP_UNUSED_ARG(proto);
yueee_yt 0:7766f6712673 735
yueee_yt 0:7766f6712673 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
yueee_yt 0:7766f6712673 737 if (--num_np_open <= 0) {
yueee_yt 0:7766f6712673 738 /* no further use for the link: shut up shop. */
yueee_yt 0:7766f6712673 739 lcp_close(0, "No network protocols running");
yueee_yt 0:7766f6712673 740 }
yueee_yt 0:7766f6712673 741 }
yueee_yt 0:7766f6712673 742
yueee_yt 0:7766f6712673 743 /*
yueee_yt 0:7766f6712673 744 * check_idle - check whether the link has been idle for long
yueee_yt 0:7766f6712673 745 * enough that we can shut it down.
yueee_yt 0:7766f6712673 746 */
yueee_yt 0:7766f6712673 747 static void
yueee_yt 0:7766f6712673 748 check_idle(void *arg)
yueee_yt 0:7766f6712673 749 {
yueee_yt 0:7766f6712673 750 struct ppp_idle idle;
yueee_yt 0:7766f6712673 751 u_short itime;
yueee_yt 0:7766f6712673 752
yueee_yt 0:7766f6712673 753 LWIP_UNUSED_ARG(arg);
yueee_yt 0:7766f6712673 754 if (!get_idle_time(0, &idle)) {
yueee_yt 0:7766f6712673 755 return;
yueee_yt 0:7766f6712673 756 }
yueee_yt 0:7766f6712673 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
yueee_yt 0:7766f6712673 758 if (itime >= ppp_settings.idle_time_limit) {
yueee_yt 0:7766f6712673 759 /* link is idle: shut it down. */
yueee_yt 0:7766f6712673 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
yueee_yt 0:7766f6712673 761 lcp_close(0, "Link inactive");
yueee_yt 0:7766f6712673 762 } else {
yueee_yt 0:7766f6712673 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
yueee_yt 0:7766f6712673 764 }
yueee_yt 0:7766f6712673 765 }
yueee_yt 0:7766f6712673 766
yueee_yt 0:7766f6712673 767 /*
yueee_yt 0:7766f6712673 768 * connect_time_expired - log a message and close the connection.
yueee_yt 0:7766f6712673 769 */
yueee_yt 0:7766f6712673 770 static void
yueee_yt 0:7766f6712673 771 connect_time_expired(void *arg)
yueee_yt 0:7766f6712673 772 {
yueee_yt 0:7766f6712673 773 LWIP_UNUSED_ARG(arg);
yueee_yt 0:7766f6712673 774
yueee_yt 0:7766f6712673 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
yueee_yt 0:7766f6712673 776 lcp_close(0, "Connect time expired"); /* Close connection */
yueee_yt 0:7766f6712673 777 }
yueee_yt 0:7766f6712673 778
yueee_yt 0:7766f6712673 779 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 780 /*
yueee_yt 0:7766f6712673 781 * auth_check_options - called to check authentication options.
yueee_yt 0:7766f6712673 782 */
yueee_yt 0:7766f6712673 783 void
yueee_yt 0:7766f6712673 784 auth_check_options(void)
yueee_yt 0:7766f6712673 785 {
yueee_yt 0:7766f6712673 786 lcp_options *wo = &lcp_wantoptions[0];
yueee_yt 0:7766f6712673 787 int can_auth;
yueee_yt 0:7766f6712673 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
yueee_yt 0:7766f6712673 789 u32_t remote;
yueee_yt 0:7766f6712673 790
yueee_yt 0:7766f6712673 791 /* Default our_name to hostname, and user to our_name */
yueee_yt 0:7766f6712673 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
yueee_yt 0:7766f6712673 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
yueee_yt 0:7766f6712673 794 }
yueee_yt 0:7766f6712673 795
yueee_yt 0:7766f6712673 796 if (ppp_settings.user[0] == 0) {
yueee_yt 0:7766f6712673 797 strcpy(ppp_settings.user, ppp_settings.our_name);
yueee_yt 0:7766f6712673 798 }
yueee_yt 0:7766f6712673 799
yueee_yt 0:7766f6712673 800 /* If authentication is required, ask peer for CHAP or PAP. */
yueee_yt 0:7766f6712673 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
yueee_yt 0:7766f6712673 802 wo->neg_chap = 1;
yueee_yt 0:7766f6712673 803 wo->neg_upap = 1;
yueee_yt 0:7766f6712673 804 }
yueee_yt 0:7766f6712673 805
yueee_yt 0:7766f6712673 806 /*
yueee_yt 0:7766f6712673 807 * Check whether we have appropriate secrets to use
yueee_yt 0:7766f6712673 808 * to authenticate the peer.
yueee_yt 0:7766f6712673 809 */
yueee_yt 0:7766f6712673 810 can_auth = wo->neg_upap && have_pap_secret();
yueee_yt 0:7766f6712673 811 if (!can_auth && wo->neg_chap) {
yueee_yt 0:7766f6712673 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
yueee_yt 0:7766f6712673 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
yueee_yt 0:7766f6712673 814 }
yueee_yt 0:7766f6712673 815
yueee_yt 0:7766f6712673 816 if (ppp_settings.auth_required && !can_auth) {
yueee_yt 0:7766f6712673 817 ppp_panic("No auth secret");
yueee_yt 0:7766f6712673 818 }
yueee_yt 0:7766f6712673 819 }
yueee_yt 0:7766f6712673 820 #endif /* UNUSED */
yueee_yt 0:7766f6712673 821
yueee_yt 0:7766f6712673 822 /*
yueee_yt 0:7766f6712673 823 * auth_reset - called when LCP is starting negotiations to recheck
yueee_yt 0:7766f6712673 824 * authentication options, i.e. whether we have appropriate secrets
yueee_yt 0:7766f6712673 825 * to use for authenticating ourselves and/or the peer.
yueee_yt 0:7766f6712673 826 */
yueee_yt 0:7766f6712673 827 void
yueee_yt 0:7766f6712673 828 auth_reset(int unit)
yueee_yt 0:7766f6712673 829 {
yueee_yt 0:7766f6712673 830 lcp_options *go = &lcp_gotoptions[unit];
yueee_yt 0:7766f6712673 831 lcp_options *ao = &lcp_allowoptions[0];
yueee_yt 0:7766f6712673 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
yueee_yt 0:7766f6712673 833 u32_t remote;
yueee_yt 0:7766f6712673 834
yueee_yt 0:7766f6712673 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
yueee_yt 0:7766f6712673 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
yueee_yt 0:7766f6712673 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)*/;
yueee_yt 0:7766f6712673 838
yueee_yt 0:7766f6712673 839 if (go->neg_upap && !have_pap_secret()) {
yueee_yt 0:7766f6712673 840 go->neg_upap = 0;
yueee_yt 0:7766f6712673 841 }
yueee_yt 0:7766f6712673 842 if (go->neg_chap) {
yueee_yt 0:7766f6712673 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
yueee_yt 0:7766f6712673 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
yueee_yt 0:7766f6712673 845 go->neg_chap = 0;
yueee_yt 0:7766f6712673 846 }
yueee_yt 0:7766f6712673 847 }
yueee_yt 0:7766f6712673 848 }
yueee_yt 0:7766f6712673 849
yueee_yt 0:7766f6712673 850 #if PAP_SUPPORT
yueee_yt 0:7766f6712673 851 /*
yueee_yt 0:7766f6712673 852 * check_passwd - Check the user name and passwd against the PAP secrets
yueee_yt 0:7766f6712673 853 * file. If requested, also check against the system password database,
yueee_yt 0:7766f6712673 854 * and login the user if OK.
yueee_yt 0:7766f6712673 855 *
yueee_yt 0:7766f6712673 856 * returns:
yueee_yt 0:7766f6712673 857 * UPAP_AUTHNAK: Authentication failed.
yueee_yt 0:7766f6712673 858 * UPAP_AUTHACK: Authentication succeeded.
yueee_yt 0:7766f6712673 859 * In either case, msg points to an appropriate message.
yueee_yt 0:7766f6712673 860 */
yueee_yt 0:7766f6712673 861 u_char
yueee_yt 0:7766f6712673 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
yueee_yt 0:7766f6712673 863 {
yueee_yt 0:7766f6712673 864 #if 1 /* XXX Assume all entries OK. */
yueee_yt 0:7766f6712673 865 LWIP_UNUSED_ARG(unit);
yueee_yt 0:7766f6712673 866 LWIP_UNUSED_ARG(auser);
yueee_yt 0:7766f6712673 867 LWIP_UNUSED_ARG(userlen);
yueee_yt 0:7766f6712673 868 LWIP_UNUSED_ARG(apasswd);
yueee_yt 0:7766f6712673 869 LWIP_UNUSED_ARG(passwdlen);
yueee_yt 0:7766f6712673 870 LWIP_UNUSED_ARG(msglen);
yueee_yt 0:7766f6712673 871 *msg = (char *) 0;
yueee_yt 0:7766f6712673 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
yueee_yt 0:7766f6712673 873 #else
yueee_yt 0:7766f6712673 874 u_char ret = 0;
yueee_yt 0:7766f6712673 875 struct wordlist *addrs = NULL;
yueee_yt 0:7766f6712673 876 char passwd[256], user[256];
yueee_yt 0:7766f6712673 877 char secret[MAXWORDLEN];
yueee_yt 0:7766f6712673 878 static u_short attempts = 0;
yueee_yt 0:7766f6712673 879
yueee_yt 0:7766f6712673 880 /*
yueee_yt 0:7766f6712673 881 * Make copies of apasswd and auser, then null-terminate them.
yueee_yt 0:7766f6712673 882 */
yueee_yt 0:7766f6712673 883 BCOPY(apasswd, passwd, passwdlen);
yueee_yt 0:7766f6712673 884 passwd[passwdlen] = '\0';
yueee_yt 0:7766f6712673 885 BCOPY(auser, user, userlen);
yueee_yt 0:7766f6712673 886 user[userlen] = '\0';
yueee_yt 0:7766f6712673 887 *msg = (char *) 0;
yueee_yt 0:7766f6712673 888
yueee_yt 0:7766f6712673 889 /* XXX Validate user name and password. */
yueee_yt 0:7766f6712673 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
yueee_yt 0:7766f6712673 891
yueee_yt 0:7766f6712673 892 if (ret == UPAP_AUTHNAK) {
yueee_yt 0:7766f6712673 893 if (*msg == (char *) 0) {
yueee_yt 0:7766f6712673 894 *msg = "Login incorrect";
yueee_yt 0:7766f6712673 895 }
yueee_yt 0:7766f6712673 896 *msglen = strlen(*msg);
yueee_yt 0:7766f6712673 897 /*
yueee_yt 0:7766f6712673 898 * Frustrate passwd stealer programs.
yueee_yt 0:7766f6712673 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
yueee_yt 0:7766f6712673 900 * On 10'th, drop the connection.
yueee_yt 0:7766f6712673 901 */
yueee_yt 0:7766f6712673 902 if (attempts++ >= 10) {
yueee_yt 0:7766f6712673 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
yueee_yt 0:7766f6712673 904 /*ppp_panic("Excess Bad Logins");*/
yueee_yt 0:7766f6712673 905 }
yueee_yt 0:7766f6712673 906 if (attempts > 3) {
yueee_yt 0:7766f6712673 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
yueee_yt 0:7766f6712673 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
yueee_yt 0:7766f6712673 909 */
yueee_yt 0:7766f6712673 910 /*sys_msleep((attempts - 3) * 5);*/
yueee_yt 0:7766f6712673 911 }
yueee_yt 0:7766f6712673 912 if (addrs != NULL) {
yueee_yt 0:7766f6712673 913 free_wordlist(addrs);
yueee_yt 0:7766f6712673 914 }
yueee_yt 0:7766f6712673 915 } else {
yueee_yt 0:7766f6712673 916 attempts = 0; /* Reset count */
yueee_yt 0:7766f6712673 917 if (*msg == (char *) 0) {
yueee_yt 0:7766f6712673 918 *msg = "Login ok";
yueee_yt 0:7766f6712673 919 }
yueee_yt 0:7766f6712673 920 *msglen = strlen(*msg);
yueee_yt 0:7766f6712673 921 set_allowed_addrs(unit, addrs);
yueee_yt 0:7766f6712673 922 }
yueee_yt 0:7766f6712673 923
yueee_yt 0:7766f6712673 924 BZERO(passwd, sizeof(passwd));
yueee_yt 0:7766f6712673 925 BZERO(secret, sizeof(secret));
yueee_yt 0:7766f6712673 926
yueee_yt 0:7766f6712673 927 return ret;
yueee_yt 0:7766f6712673 928 #endif
yueee_yt 0:7766f6712673 929 }
yueee_yt 0:7766f6712673 930 #endif /* PAP_SUPPORT */
yueee_yt 0:7766f6712673 931
yueee_yt 0:7766f6712673 932 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 933 /*
yueee_yt 0:7766f6712673 934 * This function is needed for PAM.
yueee_yt 0:7766f6712673 935 */
yueee_yt 0:7766f6712673 936
yueee_yt 0:7766f6712673 937 #ifdef USE_PAM
yueee_yt 0:7766f6712673 938
yueee_yt 0:7766f6712673 939 /* lwip does not support PAM*/
yueee_yt 0:7766f6712673 940
yueee_yt 0:7766f6712673 941 #endif /* USE_PAM */
yueee_yt 0:7766f6712673 942
yueee_yt 0:7766f6712673 943 #endif /* UNUSED */
yueee_yt 0:7766f6712673 944
yueee_yt 0:7766f6712673 945
yueee_yt 0:7766f6712673 946 #if 0 /* UNUSED */
yueee_yt 0:7766f6712673 947 /*
yueee_yt 0:7766f6712673 948 * plogin - Check the user name and password against the system
yueee_yt 0:7766f6712673 949 * password database, and login the user if OK.
yueee_yt 0:7766f6712673 950 *
yueee_yt 0:7766f6712673 951 * returns:
yueee_yt 0:7766f6712673 952 * UPAP_AUTHNAK: Login failed.
yueee_yt 0:7766f6712673 953 * UPAP_AUTHACK: Login succeeded.
yueee_yt 0:7766f6712673 954 * In either case, msg points to an appropriate message.
yueee_yt 0:7766f6712673 955 */
yueee_yt 0:7766f6712673 956 static int
yueee_yt 0:7766f6712673 957 plogin(char *user, char *passwd, char **msg, int *msglen)
yueee_yt 0:7766f6712673 958 {
yueee_yt 0:7766f6712673 959
yueee_yt 0:7766f6712673 960 LWIP_UNUSED_ARG(user);
yueee_yt 0:7766f6712673 961 LWIP_UNUSED_ARG(passwd);
yueee_yt 0:7766f6712673 962 LWIP_UNUSED_ARG(msg);
yueee_yt 0:7766f6712673 963 LWIP_UNUSED_ARG(msglen);
yueee_yt 0:7766f6712673 964
yueee_yt 0:7766f6712673 965
yueee_yt 0:7766f6712673 966 /* The new lines are here align the file when
yueee_yt 0:7766f6712673 967 * compared against the pppd 2.3.11 code */
yueee_yt 0:7766f6712673 968
yueee_yt 0:7766f6712673 969
yueee_yt 0:7766f6712673 970
yueee_yt 0:7766f6712673 971
yueee_yt 0:7766f6712673 972
yueee_yt 0:7766f6712673 973
yueee_yt 0:7766f6712673 974
yueee_yt 0:7766f6712673 975
yueee_yt 0:7766f6712673 976
yueee_yt 0:7766f6712673 977
yueee_yt 0:7766f6712673 978
yueee_yt 0:7766f6712673 979
yueee_yt 0:7766f6712673 980
yueee_yt 0:7766f6712673 981
yueee_yt 0:7766f6712673 982
yueee_yt 0:7766f6712673 983
yueee_yt 0:7766f6712673 984 /* XXX Fail until we decide that we want to support logins. */
yueee_yt 0:7766f6712673 985 return (UPAP_AUTHNAK);
yueee_yt 0:7766f6712673 986 }
yueee_yt 0:7766f6712673 987 #endif
yueee_yt 0:7766f6712673 988
yueee_yt 0:7766f6712673 989
yueee_yt 0:7766f6712673 990
yueee_yt 0:7766f6712673 991 /*
yueee_yt 0:7766f6712673 992 * plogout - Logout the user.
yueee_yt 0:7766f6712673 993 */
yueee_yt 0:7766f6712673 994 static void
yueee_yt 0:7766f6712673 995 plogout(void)
yueee_yt 0:7766f6712673 996 {
yueee_yt 0:7766f6712673 997 logged_in = 0;
yueee_yt 0:7766f6712673 998 }
yueee_yt 0:7766f6712673 999
yueee_yt 0:7766f6712673 1000 /*
yueee_yt 0:7766f6712673 1001 * null_login - Check if a username of "" and a password of "" are
yueee_yt 0:7766f6712673 1002 * acceptable, and iff so, set the list of acceptable IP addresses
yueee_yt 0:7766f6712673 1003 * and return 1.
yueee_yt 0:7766f6712673 1004 */
yueee_yt 0:7766f6712673 1005 static int
yueee_yt 0:7766f6712673 1006 null_login(int unit)
yueee_yt 0:7766f6712673 1007 {
yueee_yt 0:7766f6712673 1008 LWIP_UNUSED_ARG(unit);
yueee_yt 0:7766f6712673 1009 /* XXX Fail until we decide that we want to support logins. */
yueee_yt 0:7766f6712673 1010 return 0;
yueee_yt 0:7766f6712673 1011 }
yueee_yt 0:7766f6712673 1012
yueee_yt 0:7766f6712673 1013
yueee_yt 0:7766f6712673 1014 /*
yueee_yt 0:7766f6712673 1015 * get_pap_passwd - get a password for authenticating ourselves with
yueee_yt 0:7766f6712673 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
yueee_yt 0:7766f6712673 1017 * could be found.
yueee_yt 0:7766f6712673 1018 */
yueee_yt 0:7766f6712673 1019 static int
yueee_yt 0:7766f6712673 1020 get_pap_passwd(int unit, char *user, char *passwd)
yueee_yt 0:7766f6712673 1021 {
yueee_yt 0:7766f6712673 1022 LWIP_UNUSED_ARG(unit);
yueee_yt 0:7766f6712673 1023 /* normally we would reject PAP if no password is provided,
yueee_yt 0:7766f6712673 1024 but this causes problems with some providers (like CHT in Taiwan)
yueee_yt 0:7766f6712673 1025 who incorrectly request PAP and expect a bogus/empty password, so
yueee_yt 0:7766f6712673 1026 always provide a default user/passwd of "none"/"none"
yueee_yt 0:7766f6712673 1027
yueee_yt 0:7766f6712673 1028 @todo: This should be configured by the user, instead of being hardcoded here!
yueee_yt 0:7766f6712673 1029 */
yueee_yt 0:7766f6712673 1030 if(user) {
yueee_yt 0:7766f6712673 1031 strcpy(user, "none");
yueee_yt 0:7766f6712673 1032 }
yueee_yt 0:7766f6712673 1033 if(passwd) {
yueee_yt 0:7766f6712673 1034 strcpy(passwd, "none");
yueee_yt 0:7766f6712673 1035 }
yueee_yt 0:7766f6712673 1036 return 1;
yueee_yt 0:7766f6712673 1037 }
yueee_yt 0:7766f6712673 1038
yueee_yt 0:7766f6712673 1039 /*
yueee_yt 0:7766f6712673 1040 * have_pap_secret - check whether we have a PAP file with any
yueee_yt 0:7766f6712673 1041 * secrets that we could possibly use for authenticating the peer.
yueee_yt 0:7766f6712673 1042 */
yueee_yt 0:7766f6712673 1043 static int
yueee_yt 0:7766f6712673 1044 have_pap_secret(void)
yueee_yt 0:7766f6712673 1045 {
yueee_yt 0:7766f6712673 1046 /* XXX Fail until we set up our passwords. */
yueee_yt 0:7766f6712673 1047 return 0;
yueee_yt 0:7766f6712673 1048 }
yueee_yt 0:7766f6712673 1049
yueee_yt 0:7766f6712673 1050 /*
yueee_yt 0:7766f6712673 1051 * have_chap_secret - check whether we have a CHAP file with a
yueee_yt 0:7766f6712673 1052 * secret that we could possibly use for authenticating `client'
yueee_yt 0:7766f6712673 1053 * on `server'. Either can be the null string, meaning we don't
yueee_yt 0:7766f6712673 1054 * know the identity yet.
yueee_yt 0:7766f6712673 1055 */
yueee_yt 0:7766f6712673 1056 static int
yueee_yt 0:7766f6712673 1057 have_chap_secret(char *client, char *server, u32_t remote)
yueee_yt 0:7766f6712673 1058 {
yueee_yt 0:7766f6712673 1059 LWIP_UNUSED_ARG(client);
yueee_yt 0:7766f6712673 1060 LWIP_UNUSED_ARG(server);
yueee_yt 0:7766f6712673 1061 LWIP_UNUSED_ARG(remote);
yueee_yt 0:7766f6712673 1062
yueee_yt 0:7766f6712673 1063 /* XXX Fail until we set up our passwords. */
yueee_yt 0:7766f6712673 1064 return 0;
yueee_yt 0:7766f6712673 1065 }
yueee_yt 0:7766f6712673 1066 #if CHAP_SUPPORT
yueee_yt 0:7766f6712673 1067
yueee_yt 0:7766f6712673 1068 /*
yueee_yt 0:7766f6712673 1069 * get_secret - open the CHAP secret file and return the secret
yueee_yt 0:7766f6712673 1070 * for authenticating the given client on the given server.
yueee_yt 0:7766f6712673 1071 * (We could be either client or server).
yueee_yt 0:7766f6712673 1072 */
yueee_yt 0:7766f6712673 1073 int
yueee_yt 0:7766f6712673 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
yueee_yt 0:7766f6712673 1075 {
yueee_yt 0:7766f6712673 1076 #if 1
yueee_yt 0:7766f6712673 1077 int len;
yueee_yt 0:7766f6712673 1078 struct wordlist *addrs;
yueee_yt 0:7766f6712673 1079
yueee_yt 0:7766f6712673 1080 LWIP_UNUSED_ARG(unit);
yueee_yt 0:7766f6712673 1081 LWIP_UNUSED_ARG(server);
yueee_yt 0:7766f6712673 1082 LWIP_UNUSED_ARG(save_addrs);
yueee_yt 0:7766f6712673 1083
yueee_yt 0:7766f6712673 1084 addrs = NULL;
yueee_yt 0:7766f6712673 1085
yueee_yt 0:7766f6712673 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
yueee_yt 0:7766f6712673 1087 return 0;
yueee_yt 0:7766f6712673 1088 }
yueee_yt 0:7766f6712673 1089
yueee_yt 0:7766f6712673 1090 len = (int)strlen(ppp_settings.passwd);
yueee_yt 0:7766f6712673 1091 if (len > MAXSECRETLEN) {
yueee_yt 0:7766f6712673 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
yueee_yt 0:7766f6712673 1093 len = MAXSECRETLEN;
yueee_yt 0:7766f6712673 1094 }
yueee_yt 0:7766f6712673 1095
yueee_yt 0:7766f6712673 1096 BCOPY(ppp_settings.passwd, secret, len);
yueee_yt 0:7766f6712673 1097 *secret_len = len;
yueee_yt 0:7766f6712673 1098
yueee_yt 0:7766f6712673 1099 return 1;
yueee_yt 0:7766f6712673 1100 #else
yueee_yt 0:7766f6712673 1101 int ret = 0, len;
yueee_yt 0:7766f6712673 1102 struct wordlist *addrs;
yueee_yt 0:7766f6712673 1103 char secbuf[MAXWORDLEN];
yueee_yt 0:7766f6712673 1104
yueee_yt 0:7766f6712673 1105 addrs = NULL;
yueee_yt 0:7766f6712673 1106 secbuf[0] = 0;
yueee_yt 0:7766f6712673 1107
yueee_yt 0:7766f6712673 1108 /* XXX Find secret. */
yueee_yt 0:7766f6712673 1109 if (ret < 0) {
yueee_yt 0:7766f6712673 1110 return 0;
yueee_yt 0:7766f6712673 1111 }
yueee_yt 0:7766f6712673 1112
yueee_yt 0:7766f6712673 1113 if (save_addrs) {
yueee_yt 0:7766f6712673 1114 set_allowed_addrs(unit, addrs);
yueee_yt 0:7766f6712673 1115 }
yueee_yt 0:7766f6712673 1116
yueee_yt 0:7766f6712673 1117 len = strlen(secbuf);
yueee_yt 0:7766f6712673 1118 if (len > MAXSECRETLEN) {
yueee_yt 0:7766f6712673 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
yueee_yt 0:7766f6712673 1120 len = MAXSECRETLEN;
yueee_yt 0:7766f6712673 1121 }
yueee_yt 0:7766f6712673 1122
yueee_yt 0:7766f6712673 1123 BCOPY(secbuf, secret, len);
yueee_yt 0:7766f6712673 1124 BZERO(secbuf, sizeof(secbuf));
yueee_yt 0:7766f6712673 1125 *secret_len = len;
yueee_yt 0:7766f6712673 1126
yueee_yt 0:7766f6712673 1127 return 1;
yueee_yt 0:7766f6712673 1128 #endif
yueee_yt 0:7766f6712673 1129 }
yueee_yt 0:7766f6712673 1130 #endif /* CHAP_SUPPORT */
yueee_yt 0:7766f6712673 1131
yueee_yt 0:7766f6712673 1132
yueee_yt 0:7766f6712673 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 1134 /*
yueee_yt 0:7766f6712673 1135 * set_allowed_addrs() - set the list of allowed addresses.
yueee_yt 0:7766f6712673 1136 */
yueee_yt 0:7766f6712673 1137 static void
yueee_yt 0:7766f6712673 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
yueee_yt 0:7766f6712673 1139 {
yueee_yt 0:7766f6712673 1140 if (addresses[unit] != NULL) {
yueee_yt 0:7766f6712673 1141 free_wordlist(addresses[unit]);
yueee_yt 0:7766f6712673 1142 }
yueee_yt 0:7766f6712673 1143 addresses[unit] = addrs;
yueee_yt 0:7766f6712673 1144
yueee_yt 0:7766f6712673 1145 #if 0
yueee_yt 0:7766f6712673 1146 /*
yueee_yt 0:7766f6712673 1147 * If there's only one authorized address we might as well
yueee_yt 0:7766f6712673 1148 * ask our peer for that one right away
yueee_yt 0:7766f6712673 1149 */
yueee_yt 0:7766f6712673 1150 if (addrs != NULL && addrs->next == NULL) {
yueee_yt 0:7766f6712673 1151 char *p = addrs->word;
yueee_yt 0:7766f6712673 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
yueee_yt 0:7766f6712673 1153 u32_t a;
yueee_yt 0:7766f6712673 1154 struct hostent *hp;
yueee_yt 0:7766f6712673 1155
yueee_yt 0:7766f6712673 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
yueee_yt 0:7766f6712673 1157 hp = gethostbyname(p);
yueee_yt 0:7766f6712673 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
yueee_yt 0:7766f6712673 1159 a = *(u32_t *)hp->h_addr;
yueee_yt 0:7766f6712673 1160 } else {
yueee_yt 0:7766f6712673 1161 a = inet_addr(p);
yueee_yt 0:7766f6712673 1162 }
yueee_yt 0:7766f6712673 1163 if (a != (u32_t) -1) {
yueee_yt 0:7766f6712673 1164 wo->hisaddr = a;
yueee_yt 0:7766f6712673 1165 }
yueee_yt 0:7766f6712673 1166 }
yueee_yt 0:7766f6712673 1167 }
yueee_yt 0:7766f6712673 1168 #endif
yueee_yt 0:7766f6712673 1169 }
yueee_yt 0:7766f6712673 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 1171
yueee_yt 0:7766f6712673 1172 /*
yueee_yt 0:7766f6712673 1173 * auth_ip_addr - check whether the peer is authorized to use
yueee_yt 0:7766f6712673 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
yueee_yt 0:7766f6712673 1175 */
yueee_yt 0:7766f6712673 1176 int
yueee_yt 0:7766f6712673 1177 auth_ip_addr(int unit, u32_t addr)
yueee_yt 0:7766f6712673 1178 {
yueee_yt 0:7766f6712673 1179 return ip_addr_check(addr, addresses[unit]);
yueee_yt 0:7766f6712673 1180 }
yueee_yt 0:7766f6712673 1181
yueee_yt 0:7766f6712673 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
yueee_yt 0:7766f6712673 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
yueee_yt 0:7766f6712673 1184 {
yueee_yt 0:7766f6712673 1185 /* don't allow loopback or multicast address */
yueee_yt 0:7766f6712673 1186 if (bad_ip_adrs(addr)) {
yueee_yt 0:7766f6712673 1187 return 0;
yueee_yt 0:7766f6712673 1188 }
yueee_yt 0:7766f6712673 1189
yueee_yt 0:7766f6712673 1190 if (addrs == NULL) {
yueee_yt 0:7766f6712673 1191 return !ppp_settings.auth_required; /* no addresses authorized */
yueee_yt 0:7766f6712673 1192 }
yueee_yt 0:7766f6712673 1193
yueee_yt 0:7766f6712673 1194 /* XXX All other addresses allowed. */
yueee_yt 0:7766f6712673 1195 return 1;
yueee_yt 0:7766f6712673 1196 }
yueee_yt 0:7766f6712673 1197
yueee_yt 0:7766f6712673 1198 /*
yueee_yt 0:7766f6712673 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
yueee_yt 0:7766f6712673 1200 * to use, such as an address in the loopback net or a multicast address.
yueee_yt 0:7766f6712673 1201 * addr is in network byte order.
yueee_yt 0:7766f6712673 1202 */
yueee_yt 0:7766f6712673 1203 int
yueee_yt 0:7766f6712673 1204 bad_ip_adrs(u32_t addr)
yueee_yt 0:7766f6712673 1205 {
yueee_yt 0:7766f6712673 1206 addr = ntohl(addr);
yueee_yt 0:7766f6712673 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
yueee_yt 0:7766f6712673 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
yueee_yt 0:7766f6712673 1209 }
yueee_yt 0:7766f6712673 1210
yueee_yt 0:7766f6712673 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 1212 /*
yueee_yt 0:7766f6712673 1213 * some_ip_ok - check a wordlist to see if it authorizes any
yueee_yt 0:7766f6712673 1214 * IP address(es).
yueee_yt 0:7766f6712673 1215 */
yueee_yt 0:7766f6712673 1216 static int
yueee_yt 0:7766f6712673 1217 some_ip_ok(struct wordlist *addrs)
yueee_yt 0:7766f6712673 1218 {
yueee_yt 0:7766f6712673 1219 for (; addrs != 0; addrs = addrs->next) {
yueee_yt 0:7766f6712673 1220 if (addrs->word[0] == '-')
yueee_yt 0:7766f6712673 1221 break;
yueee_yt 0:7766f6712673 1222 if (addrs->word[0] != '!')
yueee_yt 0:7766f6712673 1223 return 1; /* some IP address is allowed */
yueee_yt 0:7766f6712673 1224 }
yueee_yt 0:7766f6712673 1225 return 0;
yueee_yt 0:7766f6712673 1226 }
yueee_yt 0:7766f6712673 1227
yueee_yt 0:7766f6712673 1228 /*
yueee_yt 0:7766f6712673 1229 * check_access - complain if a secret file has too-liberal permissions.
yueee_yt 0:7766f6712673 1230 */
yueee_yt 0:7766f6712673 1231 static void
yueee_yt 0:7766f6712673 1232 check_access(FILE *f, char *filename)
yueee_yt 0:7766f6712673 1233 {
yueee_yt 0:7766f6712673 1234 struct stat sbuf;
yueee_yt 0:7766f6712673 1235
yueee_yt 0:7766f6712673 1236 if (fstat(fileno(f), &sbuf) < 0) {
yueee_yt 0:7766f6712673 1237 warn("cannot stat secret file %s: %m", filename);
yueee_yt 0:7766f6712673 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
yueee_yt 0:7766f6712673 1239 warn("Warning - secret file %s has world and/or group access",
yueee_yt 0:7766f6712673 1240 filename);
yueee_yt 0:7766f6712673 1241 }
yueee_yt 0:7766f6712673 1242 }
yueee_yt 0:7766f6712673 1243
yueee_yt 0:7766f6712673 1244
yueee_yt 0:7766f6712673 1245 /*
yueee_yt 0:7766f6712673 1246 * scan_authfile - Scan an authorization file for a secret suitable
yueee_yt 0:7766f6712673 1247 * for authenticating `client' on `server'. The return value is -1
yueee_yt 0:7766f6712673 1248 * if no secret is found, otherwise >= 0. The return value has
yueee_yt 0:7766f6712673 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
yueee_yt 0:7766f6712673 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
yueee_yt 0:7766f6712673 1251 * Any following words on the line up to a "--" (i.e. address authorization
yueee_yt 0:7766f6712673 1252 * info) are placed in a wordlist and returned in *addrs. Any
yueee_yt 0:7766f6712673 1253 * following words (extra options) are placed in a wordlist and
yueee_yt 0:7766f6712673 1254 * returned in *opts.
yueee_yt 0:7766f6712673 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
yueee_yt 0:7766f6712673 1256 */
yueee_yt 0:7766f6712673 1257 static int
yueee_yt 0:7766f6712673 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
yueee_yt 0:7766f6712673 1259 {
yueee_yt 0:7766f6712673 1260 /* We do not (currently) need this in lwip */
yueee_yt 0:7766f6712673 1261 return 0; /* dummy */
yueee_yt 0:7766f6712673 1262 }
yueee_yt 0:7766f6712673 1263 /*
yueee_yt 0:7766f6712673 1264 * free_wordlist - release memory allocated for a wordlist.
yueee_yt 0:7766f6712673 1265 */
yueee_yt 0:7766f6712673 1266 static void
yueee_yt 0:7766f6712673 1267 free_wordlist(struct wordlist *wp)
yueee_yt 0:7766f6712673 1268 {
yueee_yt 0:7766f6712673 1269 struct wordlist *next;
yueee_yt 0:7766f6712673 1270
yueee_yt 0:7766f6712673 1271 while (wp != NULL) {
yueee_yt 0:7766f6712673 1272 next = wp->next;
yueee_yt 0:7766f6712673 1273 free(wp);
yueee_yt 0:7766f6712673 1274 wp = next;
yueee_yt 0:7766f6712673 1275 }
yueee_yt 0:7766f6712673 1276 }
yueee_yt 0:7766f6712673 1277
yueee_yt 0:7766f6712673 1278 /*
yueee_yt 0:7766f6712673 1279 * auth_script_done - called when the auth-up or auth-down script
yueee_yt 0:7766f6712673 1280 * has finished.
yueee_yt 0:7766f6712673 1281 */
yueee_yt 0:7766f6712673 1282 static void
yueee_yt 0:7766f6712673 1283 auth_script_done(void *arg)
yueee_yt 0:7766f6712673 1284 {
yueee_yt 0:7766f6712673 1285 auth_script_pid = 0;
yueee_yt 0:7766f6712673 1286 switch (auth_script_state) {
yueee_yt 0:7766f6712673 1287 case s_up:
yueee_yt 0:7766f6712673 1288 if (auth_state == s_down) {
yueee_yt 0:7766f6712673 1289 auth_script_state = s_down;
yueee_yt 0:7766f6712673 1290 auth_script(_PATH_AUTHDOWN);
yueee_yt 0:7766f6712673 1291 }
yueee_yt 0:7766f6712673 1292 break;
yueee_yt 0:7766f6712673 1293 case s_down:
yueee_yt 0:7766f6712673 1294 if (auth_state == s_up) {
yueee_yt 0:7766f6712673 1295 auth_script_state = s_up;
yueee_yt 0:7766f6712673 1296 auth_script(_PATH_AUTHUP);
yueee_yt 0:7766f6712673 1297 }
yueee_yt 0:7766f6712673 1298 break;
yueee_yt 0:7766f6712673 1299 }
yueee_yt 0:7766f6712673 1300 }
yueee_yt 0:7766f6712673 1301
yueee_yt 0:7766f6712673 1302 /*
yueee_yt 0:7766f6712673 1303 * auth_script - execute a script with arguments
yueee_yt 0:7766f6712673 1304 * interface-name peer-name real-user tty speed
yueee_yt 0:7766f6712673 1305 */
yueee_yt 0:7766f6712673 1306 static void
yueee_yt 0:7766f6712673 1307 auth_script(char *script)
yueee_yt 0:7766f6712673 1308 {
yueee_yt 0:7766f6712673 1309 char strspeed[32];
yueee_yt 0:7766f6712673 1310 struct passwd *pw;
yueee_yt 0:7766f6712673 1311 char struid[32];
yueee_yt 0:7766f6712673 1312 char *user_name;
yueee_yt 0:7766f6712673 1313 char *argv[8];
yueee_yt 0:7766f6712673 1314
yueee_yt 0:7766f6712673 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
yueee_yt 0:7766f6712673 1316 user_name = pw->pw_name;
yueee_yt 0:7766f6712673 1317 else {
yueee_yt 0:7766f6712673 1318 slprintf(struid, sizeof(struid), "%d", getuid());
yueee_yt 0:7766f6712673 1319 user_name = struid;
yueee_yt 0:7766f6712673 1320 }
yueee_yt 0:7766f6712673 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
yueee_yt 0:7766f6712673 1322
yueee_yt 0:7766f6712673 1323 argv[0] = script;
yueee_yt 0:7766f6712673 1324 argv[1] = ifname;
yueee_yt 0:7766f6712673 1325 argv[2] = peer_authname;
yueee_yt 0:7766f6712673 1326 argv[3] = user_name;
yueee_yt 0:7766f6712673 1327 argv[4] = devnam;
yueee_yt 0:7766f6712673 1328 argv[5] = strspeed;
yueee_yt 0:7766f6712673 1329 argv[6] = NULL;
yueee_yt 0:7766f6712673 1330
yueee_yt 0:7766f6712673 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
yueee_yt 0:7766f6712673 1332 }
yueee_yt 0:7766f6712673 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
yueee_yt 0:7766f6712673 1334 #endif /* PPP_SUPPORT */