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NetTribute library with debug turned on in FShandler Donatien Garner -> Segundo Equipo -> this version

lwip/netif/ppp/auth.c@0:281d6ff68967, 2010-11-19 (annotated)

Committer:: hexley
Date:: Fri Nov 19 01:54:45 2010 +0000
Revision:: 0:281d6ff68967

Who changed what in which revision?

User	Revision	Line number	New contents of line
hexley	0:281d6ff68967	1	/*****************************************************************************
hexley	0:281d6ff68967	2	* auth.c - Network Authentication and Phase Control program file.
hexley	0:281d6ff68967	3	*
hexley	0:281d6ff68967	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
hexley	0:281d6ff68967	5	* Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
hexley	0:281d6ff68967	6	*
hexley	0:281d6ff68967	7	* The authors hereby grant permission to use, copy, modify, distribute,
hexley	0:281d6ff68967	8	* and license this software and its documentation for any purpose, provided
hexley	0:281d6ff68967	9	* that existing copyright notices are retained in all copies and that this
hexley	0:281d6ff68967	10	* notice and the following disclaimer are included verbatim in any
hexley	0:281d6ff68967	11	* distributions. No written agreement, license, or royalty fee is required
hexley	0:281d6ff68967	12	* for any of the authorized uses.
hexley	0:281d6ff68967	13	*
hexley	0:281d6ff68967	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
hexley	0:281d6ff68967	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
hexley	0:281d6ff68967	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
hexley	0:281d6ff68967	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
hexley	0:281d6ff68967	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
hexley	0:281d6ff68967	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
hexley	0:281d6ff68967	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
hexley	0:281d6ff68967	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
hexley	0:281d6ff68967	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
hexley	0:281d6ff68967	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
hexley	0:281d6ff68967	24	*
hexley	0:281d6ff68967	25	******************************************************************************
hexley	0:281d6ff68967	26	* REVISION HISTORY
hexley	0:281d6ff68967	27	*
hexley	0:281d6ff68967	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
hexley	0:281d6ff68967	29	* Ported to lwIP.
hexley	0:281d6ff68967	30	* 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
hexley	0:281d6ff68967	31	* Ported from public pppd code.
hexley	0:281d6ff68967	32	*****************************************************************************/
hexley	0:281d6ff68967	33	/*
hexley	0:281d6ff68967	34	* auth.c - PPP authentication and phase control.
hexley	0:281d6ff68967	35	*
hexley	0:281d6ff68967	36	* Copyright (c) 1993 The Australian National University.
hexley	0:281d6ff68967	37	* All rights reserved.
hexley	0:281d6ff68967	38	*
hexley	0:281d6ff68967	39	* Redistribution and use in source and binary forms are permitted
hexley	0:281d6ff68967	40	* provided that the above copyright notice and this paragraph are
hexley	0:281d6ff68967	41	* duplicated in all such forms and that any documentation,
hexley	0:281d6ff68967	42	* advertising materials, and other materials related to such
hexley	0:281d6ff68967	43	* distribution and use acknowledge that the software was developed
hexley	0:281d6ff68967	44	* by the Australian National University. The name of the University
hexley	0:281d6ff68967	45	* may not be used to endorse or promote products derived from this
hexley	0:281d6ff68967	46	* software without specific prior written permission.
hexley	0:281d6ff68967	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
hexley	0:281d6ff68967	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
hexley	0:281d6ff68967	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
hexley	0:281d6ff68967	50	*
hexley	0:281d6ff68967	51	* Copyright (c) 1989 Carnegie Mellon University.
hexley	0:281d6ff68967	52	* All rights reserved.
hexley	0:281d6ff68967	53	*
hexley	0:281d6ff68967	54	* Redistribution and use in source and binary forms are permitted
hexley	0:281d6ff68967	55	* provided that the above copyright notice and this paragraph are
hexley	0:281d6ff68967	56	* duplicated in all such forms and that any documentation,
hexley	0:281d6ff68967	57	* advertising materials, and other materials related to such
hexley	0:281d6ff68967	58	* distribution and use acknowledge that the software was developed
hexley	0:281d6ff68967	59	* by Carnegie Mellon University. The name of the
hexley	0:281d6ff68967	60	* University may not be used to endorse or promote products derived
hexley	0:281d6ff68967	61	* from this software without specific prior written permission.
hexley	0:281d6ff68967	62	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
hexley	0:281d6ff68967	63	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
hexley	0:281d6ff68967	64	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
hexley	0:281d6ff68967	65	*/
hexley	0:281d6ff68967	66
hexley	0:281d6ff68967	67	#include "lwip/opt.h"
hexley	0:281d6ff68967	68
hexley	0:281d6ff68967	69	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
hexley	0:281d6ff68967	70
hexley	0:281d6ff68967	71	#include "ppp.h"
hexley	0:281d6ff68967	72	#include "pppdebug.h"
hexley	0:281d6ff68967	73
hexley	0:281d6ff68967	74	#include "fsm.h"
hexley	0:281d6ff68967	75	#include "lcp.h"
hexley	0:281d6ff68967	76	#include "pap.h"
hexley	0:281d6ff68967	77	#include "chap.h"
hexley	0:281d6ff68967	78	#include "auth.h"
hexley	0:281d6ff68967	79	#include "ipcp.h"
hexley	0:281d6ff68967	80
hexley	0:281d6ff68967	81	#if CBCP_SUPPORT
hexley	0:281d6ff68967	82	#include "cbcp.h"
hexley	0:281d6ff68967	83	#endif /* CBCP_SUPPORT */
hexley	0:281d6ff68967	84
hexley	0:281d6ff68967	85	#include "lwip/inet.h"
hexley	0:281d6ff68967	86
hexley	0:281d6ff68967	87	#include <string.h>
hexley	0:281d6ff68967	88
hexley	0:281d6ff68967	89	#if 0 /* UNUSED */
hexley	0:281d6ff68967	90	/* Bits in scan_authfile return value */
hexley	0:281d6ff68967	91	#define NONWILD_SERVER 1
hexley	0:281d6ff68967	92	#define NONWILD_CLIENT 2
hexley	0:281d6ff68967	93
hexley	0:281d6ff68967	94	#define ISWILD(word) (word[0] == '*' && word[1] == 0)
hexley	0:281d6ff68967	95	#endif /* UNUSED */
hexley	0:281d6ff68967	96
hexley	0:281d6ff68967	97	#if PAP_SUPPORT \|\| CHAP_SUPPORT
hexley	0:281d6ff68967	98	/* The name by which the peer authenticated itself to us. */
hexley	0:281d6ff68967	99	static char peer_authname[MAXNAMELEN];
hexley	0:281d6ff68967	100	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	101
hexley	0:281d6ff68967	102	/* Records which authentication operations haven't completed yet. */
hexley	0:281d6ff68967	103	static int auth_pending[NUM_PPP];
hexley	0:281d6ff68967	104
hexley	0:281d6ff68967	105	/* Set if we have successfully called plogin() */
hexley	0:281d6ff68967	106	static int logged_in;
hexley	0:281d6ff68967	107
hexley	0:281d6ff68967	108	/* Set if we have run the /etc/ppp/auth-up script. */
hexley	0:281d6ff68967	109	static int did_authup; /* @todo, we don't need this in lwip*/
hexley	0:281d6ff68967	110
hexley	0:281d6ff68967	111	/* List of addresses which the peer may use. */
hexley	0:281d6ff68967	112	static struct wordlist *addresses[NUM_PPP];
hexley	0:281d6ff68967	113
hexley	0:281d6ff68967	114	#if 0 /* UNUSED */
hexley	0:281d6ff68967	115	/* Wordlist giving addresses which the peer may use
hexley	0:281d6ff68967	116	without authenticating itself. */
hexley	0:281d6ff68967	117	static struct wordlist *noauth_addrs;
hexley	0:281d6ff68967	118
hexley	0:281d6ff68967	119	/* Extra options to apply, from the secrets file entry for the peer. */
hexley	0:281d6ff68967	120	static struct wordlist *extra_options;
hexley	0:281d6ff68967	121	#endif /* UNUSED */
hexley	0:281d6ff68967	122
hexley	0:281d6ff68967	123	/* Number of network protocols which we have opened. */
hexley	0:281d6ff68967	124	static int num_np_open;
hexley	0:281d6ff68967	125
hexley	0:281d6ff68967	126	/* Number of network protocols which have come up. */
hexley	0:281d6ff68967	127	static int num_np_up;
hexley	0:281d6ff68967	128
hexley	0:281d6ff68967	129	#if PAP_SUPPORT \|\| CHAP_SUPPORT
hexley	0:281d6ff68967	130	/* Set if we got the contents of passwd[] from the pap-secrets file. */
hexley	0:281d6ff68967	131	static int passwd_from_file;
hexley	0:281d6ff68967	132	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	133
hexley	0:281d6ff68967	134	#if 0 /* UNUSED */
hexley	0:281d6ff68967	135	/* Set if we require authentication only because we have a default route. */
hexley	0:281d6ff68967	136	static bool default_auth;
hexley	0:281d6ff68967	137
hexley	0:281d6ff68967	138	/* Hook to enable a plugin to control the idle time limit */
hexley	0:281d6ff68967	139	int (idle_time_hook) __P((struct ppp_idle )) = NULL;
hexley	0:281d6ff68967	140
hexley	0:281d6ff68967	141	/* Hook for a plugin to say whether we can possibly authenticate any peer */
hexley	0:281d6ff68967	142	int (*pap_check_hook) __P((void)) = NULL;
hexley	0:281d6ff68967	143
hexley	0:281d6ff68967	144	/* Hook for a plugin to check the PAP user and password */
hexley	0:281d6ff68967	145	int (pap_auth_hook) __P((char user, char passwd, char *msgp,
hexley	0:281d6ff68967	146	struct wordlist **paddrs,
hexley	0:281d6ff68967	147	struct wordlist **popts)) = NULL;
hexley	0:281d6ff68967	148
hexley	0:281d6ff68967	149	/* Hook for a plugin to know about the PAP user logout */
hexley	0:281d6ff68967	150	void (*pap_logout_hook) __P((void)) = NULL;
hexley	0:281d6ff68967	151
hexley	0:281d6ff68967	152	/* Hook for a plugin to get the PAP password for authenticating us */
hexley	0:281d6ff68967	153	int (pap_passwd_hook) __P((char user, char *passwd)) = NULL;
hexley	0:281d6ff68967	154
hexley	0:281d6ff68967	155	/*
hexley	0:281d6ff68967	156	* This is used to ensure that we don't start an auth-up/down
hexley	0:281d6ff68967	157	* script while one is already running.
hexley	0:281d6ff68967	158	*/
hexley	0:281d6ff68967	159	enum script_state {
hexley	0:281d6ff68967	160	s_down,
hexley	0:281d6ff68967	161	s_up
hexley	0:281d6ff68967	162	};
hexley	0:281d6ff68967	163
hexley	0:281d6ff68967	164	static enum script_state auth_state = s_down;
hexley	0:281d6ff68967	165	static enum script_state auth_script_state = s_down;
hexley	0:281d6ff68967	166	static pid_t auth_script_pid = 0;
hexley	0:281d6ff68967	167
hexley	0:281d6ff68967	168	/*
hexley	0:281d6ff68967	169	* Option variables.
hexley	0:281d6ff68967	170	* lwip: some of these are present in the ppp_settings structure
hexley	0:281d6ff68967	171	*/
hexley	0:281d6ff68967	172	bool uselogin = 0; /* Use /etc/passwd for checking PAP */
hexley	0:281d6ff68967	173	bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
hexley	0:281d6ff68967	174	bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
hexley	0:281d6ff68967	175	bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
hexley	0:281d6ff68967	176	bool usehostname = 0; /* Use hostname for our_name */
hexley	0:281d6ff68967	177	bool auth_required = 0; /* Always require authentication from peer */
hexley	0:281d6ff68967	178	bool allow_any_ip = 0; /* Allow peer to use any IP address */
hexley	0:281d6ff68967	179	bool explicit_remote = 0; /* User specified explicit remote name */
hexley	0:281d6ff68967	180	char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
hexley	0:281d6ff68967	181
hexley	0:281d6ff68967	182	#endif /* UNUSED */
hexley	0:281d6ff68967	183
hexley	0:281d6ff68967	184	/* Bits in auth_pending[] */
hexley	0:281d6ff68967	185	#define PAP_WITHPEER 1
hexley	0:281d6ff68967	186	#define PAP_PEER 2
hexley	0:281d6ff68967	187	#define CHAP_WITHPEER 4
hexley	0:281d6ff68967	188	#define CHAP_PEER 8
hexley	0:281d6ff68967	189
hexley	0:281d6ff68967	190	/* @todo, move this somewhere */
hexley	0:281d6ff68967	191	/* Used for storing a sequence of words. Usually malloced. */
hexley	0:281d6ff68967	192	struct wordlist {
hexley	0:281d6ff68967	193	struct wordlist *next;
hexley	0:281d6ff68967	194	char word[1];
hexley	0:281d6ff68967	195	};
hexley	0:281d6ff68967	196
hexley	0:281d6ff68967	197
hexley	0:281d6ff68967	198	extern char crypt (const char , const char *);
hexley	0:281d6ff68967	199
hexley	0:281d6ff68967	200	/* Prototypes for procedures local to this file. */
hexley	0:281d6ff68967	201
hexley	0:281d6ff68967	202	static void network_phase (int);
hexley	0:281d6ff68967	203	static void check_idle (void *);
hexley	0:281d6ff68967	204	static void connect_time_expired (void *);
hexley	0:281d6ff68967	205	#if 0
hexley	0:281d6ff68967	206	static int plogin (char , char , char *, int );
hexley	0:281d6ff68967	207	#endif
hexley	0:281d6ff68967	208	static void plogout (void);
hexley	0:281d6ff68967	209	static int null_login (int);
hexley	0:281d6ff68967	210	static int get_pap_passwd (int, char , char );
hexley	0:281d6ff68967	211	static int have_pap_secret (void);
hexley	0:281d6ff68967	212	static int have_chap_secret (char , char , u32_t);
hexley	0:281d6ff68967	213	static int ip_addr_check (u32_t, struct wordlist *);
hexley	0:281d6ff68967	214
hexley	0:281d6ff68967	215	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	216	static int scan_authfile (FILE , char , char , char ,
hexley	0:281d6ff68967	217	struct wordlist , struct wordlist ,
hexley	0:281d6ff68967	218	char *);
hexley	0:281d6ff68967	219	static void free_wordlist (struct wordlist *);
hexley	0:281d6ff68967	220	static void auth_script (char *);
hexley	0:281d6ff68967	221	static void auth_script_done (void *);
hexley	0:281d6ff68967	222	static void set_allowed_addrs (int unit, struct wordlist *addrs);
hexley	0:281d6ff68967	223	static int some_ip_ok (struct wordlist *);
hexley	0:281d6ff68967	224	static int setupapfile (char **);
hexley	0:281d6ff68967	225	static int privgroup (char **);
hexley	0:281d6ff68967	226	static int set_noauth_addr (char **);
hexley	0:281d6ff68967	227	static void check_access (FILE , char );
hexley	0:281d6ff68967	228	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	229
hexley	0:281d6ff68967	230	#if 0 /* UNUSED */
hexley	0:281d6ff68967	231	/*
hexley	0:281d6ff68967	232	* Authentication-related options.
hexley	0:281d6ff68967	233	*/
hexley	0:281d6ff68967	234	option_t auth_options[] = {
hexley	0:281d6ff68967	235	{ "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
hexley	0:281d6ff68967	236	"Require PAP authentication from peer", 1, &auth_required },
hexley	0:281d6ff68967	237	{ "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
hexley	0:281d6ff68967	238	"Require PAP authentication from peer", 1, &auth_required },
hexley	0:281d6ff68967	239	{ "refuse-pap", o_bool, &refuse_pap,
hexley	0:281d6ff68967	240	"Don't agree to auth to peer with PAP", 1 },
hexley	0:281d6ff68967	241	{ "-pap", o_bool, &refuse_pap,
hexley	0:281d6ff68967	242	"Don't allow PAP authentication with peer", 1 },
hexley	0:281d6ff68967	243	{ "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
hexley	0:281d6ff68967	244	"Require CHAP authentication from peer", 1, &auth_required },
hexley	0:281d6ff68967	245	{ "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
hexley	0:281d6ff68967	246	"Require CHAP authentication from peer", 1, &auth_required },
hexley	0:281d6ff68967	247	{ "refuse-chap", o_bool, &refuse_chap,
hexley	0:281d6ff68967	248	"Don't agree to auth to peer with CHAP", 1 },
hexley	0:281d6ff68967	249	{ "-chap", o_bool, &refuse_chap,
hexley	0:281d6ff68967	250	"Don't allow CHAP authentication with peer", 1 },
hexley	0:281d6ff68967	251	{ "name", o_string, our_name,
hexley	0:281d6ff68967	252	"Set local name for authentication",
hexley	0:281d6ff68967	253	OPT_PRIV\|OPT_STATIC, NULL, MAXNAMELEN },
hexley	0:281d6ff68967	254	{ "user", o_string, user,
hexley	0:281d6ff68967	255	"Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
hexley	0:281d6ff68967	256	{ "usehostname", o_bool, &usehostname,
hexley	0:281d6ff68967	257	"Must use hostname for authentication", 1 },
hexley	0:281d6ff68967	258	{ "remotename", o_string, remote_name,
hexley	0:281d6ff68967	259	"Set remote name for authentication", OPT_STATIC,
hexley	0:281d6ff68967	260	&explicit_remote, MAXNAMELEN },
hexley	0:281d6ff68967	261	{ "auth", o_bool, &auth_required,
hexley	0:281d6ff68967	262	"Require authentication from peer", 1 },
hexley	0:281d6ff68967	263	{ "noauth", o_bool, &auth_required,
hexley	0:281d6ff68967	264	"Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
hexley	0:281d6ff68967	265	{ "login", o_bool, &uselogin,
hexley	0:281d6ff68967	266	"Use system password database for PAP", 1 },
hexley	0:281d6ff68967	267	{ "papcrypt", o_bool, &cryptpap,
hexley	0:281d6ff68967	268	"PAP passwords are encrypted", 1 },
hexley	0:281d6ff68967	269	{ "+ua", o_special, (void *)setupapfile,
hexley	0:281d6ff68967	270	"Get PAP user and password from file" },
hexley	0:281d6ff68967	271	{ "password", o_string, passwd,
hexley	0:281d6ff68967	272	"Password for authenticating us to the peer", OPT_STATIC,
hexley	0:281d6ff68967	273	NULL, MAXSECRETLEN },
hexley	0:281d6ff68967	274	{ "privgroup", o_special, (void *)privgroup,
hexley	0:281d6ff68967	275	"Allow group members to use privileged options", OPT_PRIV },
hexley	0:281d6ff68967	276	{ "allow-ip", o_special, (void *)set_noauth_addr,
hexley	0:281d6ff68967	277	"Set IP address(es) which can be used without authentication",
hexley	0:281d6ff68967	278	OPT_PRIV },
hexley	0:281d6ff68967	279	{ NULL }
hexley	0:281d6ff68967	280	};
hexley	0:281d6ff68967	281	#endif /* UNUSED */
hexley	0:281d6ff68967	282	#if 0 /* UNUSED */
hexley	0:281d6ff68967	283	/*
hexley	0:281d6ff68967	284	* setupapfile - specifies UPAP info for authenticating with peer.
hexley	0:281d6ff68967	285	*/
hexley	0:281d6ff68967	286	static int
hexley	0:281d6ff68967	287	setupapfile(char **argv)
hexley	0:281d6ff68967	288	{
hexley	0:281d6ff68967	289	FILE * ufile;
hexley	0:281d6ff68967	290	int l;
hexley	0:281d6ff68967	291
hexley	0:281d6ff68967	292	lcp_allowoptions[0].neg_upap = 1;
hexley	0:281d6ff68967	293
hexley	0:281d6ff68967	294	/* open user info file */
hexley	0:281d6ff68967	295	seteuid(getuid());
hexley	0:281d6ff68967	296	ufile = fopen(*argv, "r");
hexley	0:281d6ff68967	297	seteuid(0);
hexley	0:281d6ff68967	298	if (ufile == NULL) {
hexley	0:281d6ff68967	299	option_error("unable to open user login data file %s", *argv);
hexley	0:281d6ff68967	300	return 0;
hexley	0:281d6ff68967	301	}
hexley	0:281d6ff68967	302	check_access(ufile, *argv);
hexley	0:281d6ff68967	303
hexley	0:281d6ff68967	304	/* get username */
hexley	0:281d6ff68967	305	if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
hexley	0:281d6ff68967	306	\|\| fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
hexley	0:281d6ff68967	307	option_error("unable to read user login data file %s", *argv);
hexley	0:281d6ff68967	308	return 0;
hexley	0:281d6ff68967	309	}
hexley	0:281d6ff68967	310	fclose(ufile);
hexley	0:281d6ff68967	311
hexley	0:281d6ff68967	312	/* get rid of newlines */
hexley	0:281d6ff68967	313	l = strlen(user);
hexley	0:281d6ff68967	314	if (l > 0 && user[l-1] == '\n')
hexley	0:281d6ff68967	315	user[l-1] = 0;
hexley	0:281d6ff68967	316	l = strlen(passwd);
hexley	0:281d6ff68967	317	if (l > 0 && passwd[l-1] == '\n')
hexley	0:281d6ff68967	318	passwd[l-1] = 0;
hexley	0:281d6ff68967	319
hexley	0:281d6ff68967	320	return (1);
hexley	0:281d6ff68967	321	}
hexley	0:281d6ff68967	322	#endif /* UNUSED */
hexley	0:281d6ff68967	323
hexley	0:281d6ff68967	324	#if 0 /* UNUSED */
hexley	0:281d6ff68967	325	/*
hexley	0:281d6ff68967	326	* privgroup - allow members of the group to have privileged access.
hexley	0:281d6ff68967	327	*/
hexley	0:281d6ff68967	328	static int
hexley	0:281d6ff68967	329	privgroup(char **argv)
hexley	0:281d6ff68967	330	{
hexley	0:281d6ff68967	331	struct group *g;
hexley	0:281d6ff68967	332	int i;
hexley	0:281d6ff68967	333
hexley	0:281d6ff68967	334	g = getgrnam(*argv);
hexley	0:281d6ff68967	335	if (g == 0) {
hexley	0:281d6ff68967	336	option_error("group %s is unknown", *argv);
hexley	0:281d6ff68967	337	return 0;
hexley	0:281d6ff68967	338	}
hexley	0:281d6ff68967	339	for (i = 0; i < ngroups; ++i) {
hexley	0:281d6ff68967	340	if (groups[i] == g->gr_gid) {
hexley	0:281d6ff68967	341	privileged = 1;
hexley	0:281d6ff68967	342	break;
hexley	0:281d6ff68967	343	}
hexley	0:281d6ff68967	344	}
hexley	0:281d6ff68967	345	return 1;
hexley	0:281d6ff68967	346	}
hexley	0:281d6ff68967	347	#endif
hexley	0:281d6ff68967	348
hexley	0:281d6ff68967	349	#if 0 /* UNUSED */
hexley	0:281d6ff68967	350	/*
hexley	0:281d6ff68967	351	* set_noauth_addr - set address(es) that can be used without authentication.
hexley	0:281d6ff68967	352	* Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
hexley	0:281d6ff68967	353	*/
hexley	0:281d6ff68967	354	static int
hexley	0:281d6ff68967	355	set_noauth_addr(char **argv)
hexley	0:281d6ff68967	356	{
hexley	0:281d6ff68967	357	char addr = argv;
hexley	0:281d6ff68967	358	int l = strlen(addr);
hexley	0:281d6ff68967	359	struct wordlist *wp;
hexley	0:281d6ff68967	360
hexley	0:281d6ff68967	361	wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
hexley	0:281d6ff68967	362	if (wp == NULL)
hexley	0:281d6ff68967	363	novm("allow-ip argument");
hexley	0:281d6ff68967	364	wp->word = (char *) (wp + 1);
hexley	0:281d6ff68967	365	wp->next = noauth_addrs;
hexley	0:281d6ff68967	366	BCOPY(addr, wp->word, l);
hexley	0:281d6ff68967	367	noauth_addrs = wp;
hexley	0:281d6ff68967	368	return 1;
hexley	0:281d6ff68967	369	}
hexley	0:281d6ff68967	370	#endif /* UNUSED */
hexley	0:281d6ff68967	371
hexley	0:281d6ff68967	372	/*
hexley	0:281d6ff68967	373	* An Open on LCP has requested a change from Dead to Establish phase.
hexley	0:281d6ff68967	374	* Do what's necessary to bring the physical layer up.
hexley	0:281d6ff68967	375	*/
hexley	0:281d6ff68967	376	void
hexley	0:281d6ff68967	377	link_required(int unit)
hexley	0:281d6ff68967	378	{
hexley	0:281d6ff68967	379	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	380
hexley	0:281d6ff68967	381	AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
hexley	0:281d6ff68967	382	}
hexley	0:281d6ff68967	383
hexley	0:281d6ff68967	384	/*
hexley	0:281d6ff68967	385	* LCP has terminated the link; go to the Dead phase and take the
hexley	0:281d6ff68967	386	* physical layer down.
hexley	0:281d6ff68967	387	*/
hexley	0:281d6ff68967	388	void
hexley	0:281d6ff68967	389	link_terminated(int unit)
hexley	0:281d6ff68967	390	{
hexley	0:281d6ff68967	391	AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
hexley	0:281d6ff68967	392	if (lcp_phase[unit] == PHASE_DEAD) {
hexley	0:281d6ff68967	393	return;
hexley	0:281d6ff68967	394	}
hexley	0:281d6ff68967	395	if (logged_in) {
hexley	0:281d6ff68967	396	plogout();
hexley	0:281d6ff68967	397	}
hexley	0:281d6ff68967	398	lcp_phase[unit] = PHASE_DEAD;
hexley	0:281d6ff68967	399	AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
hexley	0:281d6ff68967	400	pppLinkTerminated(unit);
hexley	0:281d6ff68967	401	}
hexley	0:281d6ff68967	402
hexley	0:281d6ff68967	403	/*
hexley	0:281d6ff68967	404	* LCP has gone down; it will either die or try to re-establish.
hexley	0:281d6ff68967	405	*/
hexley	0:281d6ff68967	406	void
hexley	0:281d6ff68967	407	link_down(int unit)
hexley	0:281d6ff68967	408	{
hexley	0:281d6ff68967	409	int i;
hexley	0:281d6ff68967	410	struct protent *protp;
hexley	0:281d6ff68967	411
hexley	0:281d6ff68967	412	AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
hexley	0:281d6ff68967	413
hexley	0:281d6ff68967	414	if (did_authup) {
hexley	0:281d6ff68967	415	/* XXX Do link down processing. */
hexley	0:281d6ff68967	416	did_authup = 0;
hexley	0:281d6ff68967	417	}
hexley	0:281d6ff68967	418	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hexley	0:281d6ff68967	419	if (!protp->enabled_flag) {
hexley	0:281d6ff68967	420	continue;
hexley	0:281d6ff68967	421	}
hexley	0:281d6ff68967	422	if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
hexley	0:281d6ff68967	423	(*protp->lowerdown)(unit);
hexley	0:281d6ff68967	424	}
hexley	0:281d6ff68967	425	if (protp->protocol < 0xC000 && protp->close != NULL) {
hexley	0:281d6ff68967	426	(*protp->close)(unit, "LCP down");
hexley	0:281d6ff68967	427	}
hexley	0:281d6ff68967	428	}
hexley	0:281d6ff68967	429	num_np_open = 0; /* number of network protocols we have opened */
hexley	0:281d6ff68967	430	num_np_up = 0; /* Number of network protocols which have come up */
hexley	0:281d6ff68967	431
hexley	0:281d6ff68967	432	if (lcp_phase[unit] != PHASE_DEAD) {
hexley	0:281d6ff68967	433	lcp_phase[unit] = PHASE_TERMINATE;
hexley	0:281d6ff68967	434	}
hexley	0:281d6ff68967	435	pppLinkDown(unit);
hexley	0:281d6ff68967	436	}
hexley	0:281d6ff68967	437
hexley	0:281d6ff68967	438	/*
hexley	0:281d6ff68967	439	* The link is established.
hexley	0:281d6ff68967	440	* Proceed to the Dead, Authenticate or Network phase as appropriate.
hexley	0:281d6ff68967	441	*/
hexley	0:281d6ff68967	442	void
hexley	0:281d6ff68967	443	link_established(int unit)
hexley	0:281d6ff68967	444	{
hexley	0:281d6ff68967	445	int auth;
hexley	0:281d6ff68967	446	int i;
hexley	0:281d6ff68967	447	struct protent *protp;
hexley	0:281d6ff68967	448	lcp_options *wo = &lcp_wantoptions[unit];
hexley	0:281d6ff68967	449	lcp_options *go = &lcp_gotoptions[unit];
hexley	0:281d6ff68967	450	#if PAP_SUPPORT \|\| CHAP_SUPPORT
hexley	0:281d6ff68967	451	lcp_options *ho = &lcp_hisoptions[unit];
hexley	0:281d6ff68967	452	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	453
hexley	0:281d6ff68967	454	AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
hexley	0:281d6ff68967	455	/*
hexley	0:281d6ff68967	456	* Tell higher-level protocols that LCP is up.
hexley	0:281d6ff68967	457	*/
hexley	0:281d6ff68967	458	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hexley	0:281d6ff68967	459	if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
hexley	0:281d6ff68967	460	(*protp->lowerup)(unit);
hexley	0:281d6ff68967	461	}
hexley	0:281d6ff68967	462	}
hexley	0:281d6ff68967	463	if (ppp_settings.auth_required && !(go->neg_chap \|\| go->neg_upap)) {
hexley	0:281d6ff68967	464	/*
hexley	0:281d6ff68967	465	* We wanted the peer to authenticate itself, and it refused:
hexley	0:281d6ff68967	466	* treat it as though it authenticated with PAP using a username
hexley	0:281d6ff68967	467	* of "" and a password of "". If that's not OK, boot it out.
hexley	0:281d6ff68967	468	*/
hexley	0:281d6ff68967	469	if (!wo->neg_upap \|\| !null_login(unit)) {
hexley	0:281d6ff68967	470	AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
hexley	0:281d6ff68967	471	lcp_close(unit, "peer refused to authenticate");
hexley	0:281d6ff68967	472	return;
hexley	0:281d6ff68967	473	}
hexley	0:281d6ff68967	474	}
hexley	0:281d6ff68967	475
hexley	0:281d6ff68967	476	lcp_phase[unit] = PHASE_AUTHENTICATE;
hexley	0:281d6ff68967	477	auth = 0;
hexley	0:281d6ff68967	478	#if CHAP_SUPPORT
hexley	0:281d6ff68967	479	if (go->neg_chap) {
hexley	0:281d6ff68967	480	ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
hexley	0:281d6ff68967	481	auth \|= CHAP_PEER;
hexley	0:281d6ff68967	482	}
hexley	0:281d6ff68967	483	#endif /* CHAP_SUPPORT */
hexley	0:281d6ff68967	484	#if PAP_SUPPORT && CHAP_SUPPORT
hexley	0:281d6ff68967	485	else
hexley	0:281d6ff68967	486	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
hexley	0:281d6ff68967	487	#if PAP_SUPPORT
hexley	0:281d6ff68967	488	if (go->neg_upap) {
hexley	0:281d6ff68967	489	upap_authpeer(unit);
hexley	0:281d6ff68967	490	auth \|= PAP_PEER;
hexley	0:281d6ff68967	491	}
hexley	0:281d6ff68967	492	#endif /* PAP_SUPPORT */
hexley	0:281d6ff68967	493	#if CHAP_SUPPORT
hexley	0:281d6ff68967	494	if (ho->neg_chap) {
hexley	0:281d6ff68967	495	ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
hexley	0:281d6ff68967	496	auth \|= CHAP_WITHPEER;
hexley	0:281d6ff68967	497	}
hexley	0:281d6ff68967	498	#endif /* CHAP_SUPPORT */
hexley	0:281d6ff68967	499	#if PAP_SUPPORT && CHAP_SUPPORT
hexley	0:281d6ff68967	500	else
hexley	0:281d6ff68967	501	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
hexley	0:281d6ff68967	502	#if PAP_SUPPORT
hexley	0:281d6ff68967	503	if (ho->neg_upap) {
hexley	0:281d6ff68967	504	if (ppp_settings.passwd[0] == 0) {
hexley	0:281d6ff68967	505	passwd_from_file = 1;
hexley	0:281d6ff68967	506	if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
hexley	0:281d6ff68967	507	AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
hexley	0:281d6ff68967	508	}
hexley	0:281d6ff68967	509	}
hexley	0:281d6ff68967	510	upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
hexley	0:281d6ff68967	511	auth \|= PAP_WITHPEER;
hexley	0:281d6ff68967	512	}
hexley	0:281d6ff68967	513	#endif /* PAP_SUPPORT */
hexley	0:281d6ff68967	514	auth_pending[unit] = auth;
hexley	0:281d6ff68967	515
hexley	0:281d6ff68967	516	if (!auth) {
hexley	0:281d6ff68967	517	network_phase(unit);
hexley	0:281d6ff68967	518	}
hexley	0:281d6ff68967	519	}
hexley	0:281d6ff68967	520
hexley	0:281d6ff68967	521	/*
hexley	0:281d6ff68967	522	* Proceed to the network phase.
hexley	0:281d6ff68967	523	*/
hexley	0:281d6ff68967	524	static void
hexley	0:281d6ff68967	525	network_phase(int unit)
hexley	0:281d6ff68967	526	{
hexley	0:281d6ff68967	527	int i;
hexley	0:281d6ff68967	528	struct protent *protp;
hexley	0:281d6ff68967	529	lcp_options *go = &lcp_gotoptions[unit];
hexley	0:281d6ff68967	530
hexley	0:281d6ff68967	531	/*
hexley	0:281d6ff68967	532	* If the peer had to authenticate, run the auth-up script now.
hexley	0:281d6ff68967	533	*/
hexley	0:281d6ff68967	534	if ((go->neg_chap \|\| go->neg_upap) && !did_authup) {
hexley	0:281d6ff68967	535	/* XXX Do setup for peer authentication. */
hexley	0:281d6ff68967	536	did_authup = 1;
hexley	0:281d6ff68967	537	}
hexley	0:281d6ff68967	538
hexley	0:281d6ff68967	539	#if CBCP_SUPPORT
hexley	0:281d6ff68967	540	/*
hexley	0:281d6ff68967	541	* If we negotiated callback, do it now.
hexley	0:281d6ff68967	542	*/
hexley	0:281d6ff68967	543	if (go->neg_cbcp) {
hexley	0:281d6ff68967	544	lcp_phase[unit] = PHASE_CALLBACK;
hexley	0:281d6ff68967	545	(*cbcp_protent.open)(unit);
hexley	0:281d6ff68967	546	return;
hexley	0:281d6ff68967	547	}
hexley	0:281d6ff68967	548	#endif /* CBCP_SUPPORT */
hexley	0:281d6ff68967	549
hexley	0:281d6ff68967	550	lcp_phase[unit] = PHASE_NETWORK;
hexley	0:281d6ff68967	551	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hexley	0:281d6ff68967	552	if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
hexley	0:281d6ff68967	553	(*protp->open)(unit);
hexley	0:281d6ff68967	554	if (protp->protocol != PPP_CCP) {
hexley	0:281d6ff68967	555	++num_np_open;
hexley	0:281d6ff68967	556	}
hexley	0:281d6ff68967	557	}
hexley	0:281d6ff68967	558	}
hexley	0:281d6ff68967	559
hexley	0:281d6ff68967	560	if (num_np_open == 0) {
hexley	0:281d6ff68967	561	/* nothing to do */
hexley	0:281d6ff68967	562	lcp_close(0, "No network protocols running");
hexley	0:281d6ff68967	563	}
hexley	0:281d6ff68967	564	}
hexley	0:281d6ff68967	565	/* @todo: add void start_networks(void) here (pppd 2.3.11) */
hexley	0:281d6ff68967	566
hexley	0:281d6ff68967	567	/*
hexley	0:281d6ff68967	568	* The peer has failed to authenticate himself using `protocol'.
hexley	0:281d6ff68967	569	*/
hexley	0:281d6ff68967	570	void
hexley	0:281d6ff68967	571	auth_peer_fail(int unit, u16_t protocol)
hexley	0:281d6ff68967	572	{
hexley	0:281d6ff68967	573	LWIP_UNUSED_ARG(protocol);
hexley	0:281d6ff68967	574
hexley	0:281d6ff68967	575	AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
hexley	0:281d6ff68967	576	/*
hexley	0:281d6ff68967	577	* Authentication failure: take the link down
hexley	0:281d6ff68967	578	*/
hexley	0:281d6ff68967	579	lcp_close(unit, "Authentication failed");
hexley	0:281d6ff68967	580	}
hexley	0:281d6ff68967	581
hexley	0:281d6ff68967	582
hexley	0:281d6ff68967	583	#if PAP_SUPPORT \|\| CHAP_SUPPORT
hexley	0:281d6ff68967	584	/*
hexley	0:281d6ff68967	585	* The peer has been successfully authenticated using `protocol'.
hexley	0:281d6ff68967	586	*/
hexley	0:281d6ff68967	587	void
hexley	0:281d6ff68967	588	auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
hexley	0:281d6ff68967	589	{
hexley	0:281d6ff68967	590	int pbit;
hexley	0:281d6ff68967	591
hexley	0:281d6ff68967	592	AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
hexley	0:281d6ff68967	593	switch (protocol) {
hexley	0:281d6ff68967	594	case PPP_CHAP:
hexley	0:281d6ff68967	595	pbit = CHAP_PEER;
hexley	0:281d6ff68967	596	break;
hexley	0:281d6ff68967	597	case PPP_PAP:
hexley	0:281d6ff68967	598	pbit = PAP_PEER;
hexley	0:281d6ff68967	599	break;
hexley	0:281d6ff68967	600	default:
hexley	0:281d6ff68967	601	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
hexley	0:281d6ff68967	602	return;
hexley	0:281d6ff68967	603	}
hexley	0:281d6ff68967	604
hexley	0:281d6ff68967	605	/*
hexley	0:281d6ff68967	606	* Save the authenticated name of the peer for later.
hexley	0:281d6ff68967	607	*/
hexley	0:281d6ff68967	608	if (namelen > (int)sizeof(peer_authname) - 1) {
hexley	0:281d6ff68967	609	namelen = sizeof(peer_authname) - 1;
hexley	0:281d6ff68967	610	}
hexley	0:281d6ff68967	611	BCOPY(name, peer_authname, namelen);
hexley	0:281d6ff68967	612	peer_authname[namelen] = 0;
hexley	0:281d6ff68967	613
hexley	0:281d6ff68967	614	/*
hexley	0:281d6ff68967	615	* If there is no more authentication still to be done,
hexley	0:281d6ff68967	616	* proceed to the network (or callback) phase.
hexley	0:281d6ff68967	617	*/
hexley	0:281d6ff68967	618	if ((auth_pending[unit] &= ~pbit) == 0) {
hexley	0:281d6ff68967	619	network_phase(unit);
hexley	0:281d6ff68967	620	}
hexley	0:281d6ff68967	621	}
hexley	0:281d6ff68967	622
hexley	0:281d6ff68967	623	/*
hexley	0:281d6ff68967	624	* We have failed to authenticate ourselves to the peer using `protocol'.
hexley	0:281d6ff68967	625	*/
hexley	0:281d6ff68967	626	void
hexley	0:281d6ff68967	627	auth_withpeer_fail(int unit, u16_t protocol)
hexley	0:281d6ff68967	628	{
hexley	0:281d6ff68967	629	int errCode = PPPERR_AUTHFAIL;
hexley	0:281d6ff68967	630
hexley	0:281d6ff68967	631	LWIP_UNUSED_ARG(protocol);
hexley	0:281d6ff68967	632
hexley	0:281d6ff68967	633	AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
hexley	0:281d6ff68967	634	if (passwd_from_file) {
hexley	0:281d6ff68967	635	BZERO(ppp_settings.passwd, MAXSECRETLEN);
hexley	0:281d6ff68967	636	}
hexley	0:281d6ff68967	637
hexley	0:281d6ff68967	638	/*
hexley	0:281d6ff68967	639	* We've failed to authenticate ourselves to our peer.
hexley	0:281d6ff68967	640	* He'll probably take the link down, and there's not much
hexley	0:281d6ff68967	641	* we can do except wait for that.
hexley	0:281d6ff68967	642	*/
hexley	0:281d6ff68967	643	pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
hexley	0:281d6ff68967	644	lcp_close(unit, "Failed to authenticate ourselves to peer");
hexley	0:281d6ff68967	645	}
hexley	0:281d6ff68967	646
hexley	0:281d6ff68967	647	/*
hexley	0:281d6ff68967	648	* We have successfully authenticated ourselves with the peer using `protocol'.
hexley	0:281d6ff68967	649	*/
hexley	0:281d6ff68967	650	void
hexley	0:281d6ff68967	651	auth_withpeer_success(int unit, u16_t protocol)
hexley	0:281d6ff68967	652	{
hexley	0:281d6ff68967	653	int pbit;
hexley	0:281d6ff68967	654
hexley	0:281d6ff68967	655	AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
hexley	0:281d6ff68967	656	switch (protocol) {
hexley	0:281d6ff68967	657	case PPP_CHAP:
hexley	0:281d6ff68967	658	pbit = CHAP_WITHPEER;
hexley	0:281d6ff68967	659	break;
hexley	0:281d6ff68967	660	case PPP_PAP:
hexley	0:281d6ff68967	661	if (passwd_from_file) {
hexley	0:281d6ff68967	662	BZERO(ppp_settings.passwd, MAXSECRETLEN);
hexley	0:281d6ff68967	663	}
hexley	0:281d6ff68967	664	pbit = PAP_WITHPEER;
hexley	0:281d6ff68967	665	break;
hexley	0:281d6ff68967	666	default:
hexley	0:281d6ff68967	667	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
hexley	0:281d6ff68967	668	pbit = 0;
hexley	0:281d6ff68967	669	}
hexley	0:281d6ff68967	670
hexley	0:281d6ff68967	671	/*
hexley	0:281d6ff68967	672	* If there is no more authentication still being done,
hexley	0:281d6ff68967	673	* proceed to the network (or callback) phase.
hexley	0:281d6ff68967	674	*/
hexley	0:281d6ff68967	675	if ((auth_pending[unit] &= ~pbit) == 0) {
hexley	0:281d6ff68967	676	network_phase(unit);
hexley	0:281d6ff68967	677	}
hexley	0:281d6ff68967	678	}
hexley	0:281d6ff68967	679	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	680
hexley	0:281d6ff68967	681
hexley	0:281d6ff68967	682	/*
hexley	0:281d6ff68967	683	* np_up - a network protocol has come up.
hexley	0:281d6ff68967	684	*/
hexley	0:281d6ff68967	685	void
hexley	0:281d6ff68967	686	np_up(int unit, u16_t proto)
hexley	0:281d6ff68967	687	{
hexley	0:281d6ff68967	688	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	689	LWIP_UNUSED_ARG(proto);
hexley	0:281d6ff68967	690
hexley	0:281d6ff68967	691	AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
hexley	0:281d6ff68967	692	if (num_np_up == 0) {
hexley	0:281d6ff68967	693	AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
hexley	0:281d6ff68967	694	/*
hexley	0:281d6ff68967	695	* At this point we consider that the link has come up successfully.
hexley	0:281d6ff68967	696	*/
hexley	0:281d6ff68967	697	if (ppp_settings.idle_time_limit > 0) {
hexley	0:281d6ff68967	698	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
hexley	0:281d6ff68967	699	}
hexley	0:281d6ff68967	700
hexley	0:281d6ff68967	701	/*
hexley	0:281d6ff68967	702	* Set a timeout to close the connection once the maximum
hexley	0:281d6ff68967	703	* connect time has expired.
hexley	0:281d6ff68967	704	*/
hexley	0:281d6ff68967	705	if (ppp_settings.maxconnect > 0) {
hexley	0:281d6ff68967	706	TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
hexley	0:281d6ff68967	707	}
hexley	0:281d6ff68967	708	}
hexley	0:281d6ff68967	709	++num_np_up;
hexley	0:281d6ff68967	710	}
hexley	0:281d6ff68967	711
hexley	0:281d6ff68967	712	/*
hexley	0:281d6ff68967	713	* np_down - a network protocol has gone down.
hexley	0:281d6ff68967	714	*/
hexley	0:281d6ff68967	715	void
hexley	0:281d6ff68967	716	np_down(int unit, u16_t proto)
hexley	0:281d6ff68967	717	{
hexley	0:281d6ff68967	718	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	719	LWIP_UNUSED_ARG(proto);
hexley	0:281d6ff68967	720
hexley	0:281d6ff68967	721	AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
hexley	0:281d6ff68967	722	if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
hexley	0:281d6ff68967	723	UNTIMEOUT(check_idle, NULL);
hexley	0:281d6ff68967	724	}
hexley	0:281d6ff68967	725	}
hexley	0:281d6ff68967	726
hexley	0:281d6ff68967	727	/*
hexley	0:281d6ff68967	728	* np_finished - a network protocol has finished using the link.
hexley	0:281d6ff68967	729	*/
hexley	0:281d6ff68967	730	void
hexley	0:281d6ff68967	731	np_finished(int unit, u16_t proto)
hexley	0:281d6ff68967	732	{
hexley	0:281d6ff68967	733	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	734	LWIP_UNUSED_ARG(proto);
hexley	0:281d6ff68967	735
hexley	0:281d6ff68967	736	AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
hexley	0:281d6ff68967	737	if (--num_np_open <= 0) {
hexley	0:281d6ff68967	738	/* no further use for the link: shut up shop. */
hexley	0:281d6ff68967	739	lcp_close(0, "No network protocols running");
hexley	0:281d6ff68967	740	}
hexley	0:281d6ff68967	741	}
hexley	0:281d6ff68967	742
hexley	0:281d6ff68967	743	/*
hexley	0:281d6ff68967	744	* check_idle - check whether the link has been idle for long
hexley	0:281d6ff68967	745	* enough that we can shut it down.
hexley	0:281d6ff68967	746	*/
hexley	0:281d6ff68967	747	static void
hexley	0:281d6ff68967	748	check_idle(void *arg)
hexley	0:281d6ff68967	749	{
hexley	0:281d6ff68967	750	struct ppp_idle idle;
hexley	0:281d6ff68967	751	u_short itime;
hexley	0:281d6ff68967	752
hexley	0:281d6ff68967	753	LWIP_UNUSED_ARG(arg);
hexley	0:281d6ff68967	754	if (!get_idle_time(0, &idle)) {
hexley	0:281d6ff68967	755	return;
hexley	0:281d6ff68967	756	}
hexley	0:281d6ff68967	757	itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
hexley	0:281d6ff68967	758	if (itime >= ppp_settings.idle_time_limit) {
hexley	0:281d6ff68967	759	/* link is idle: shut it down. */
hexley	0:281d6ff68967	760	AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
hexley	0:281d6ff68967	761	lcp_close(0, "Link inactive");
hexley	0:281d6ff68967	762	} else {
hexley	0:281d6ff68967	763	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
hexley	0:281d6ff68967	764	}
hexley	0:281d6ff68967	765	}
hexley	0:281d6ff68967	766
hexley	0:281d6ff68967	767	/*
hexley	0:281d6ff68967	768	* connect_time_expired - log a message and close the connection.
hexley	0:281d6ff68967	769	*/
hexley	0:281d6ff68967	770	static void
hexley	0:281d6ff68967	771	connect_time_expired(void *arg)
hexley	0:281d6ff68967	772	{
hexley	0:281d6ff68967	773	LWIP_UNUSED_ARG(arg);
hexley	0:281d6ff68967	774
hexley	0:281d6ff68967	775	AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
hexley	0:281d6ff68967	776	lcp_close(0, "Connect time expired"); /* Close connection */
hexley	0:281d6ff68967	777	}
hexley	0:281d6ff68967	778
hexley	0:281d6ff68967	779	#if 0 /* UNUSED */
hexley	0:281d6ff68967	780	/*
hexley	0:281d6ff68967	781	* auth_check_options - called to check authentication options.
hexley	0:281d6ff68967	782	*/
hexley	0:281d6ff68967	783	void
hexley	0:281d6ff68967	784	auth_check_options(void)
hexley	0:281d6ff68967	785	{
hexley	0:281d6ff68967	786	lcp_options *wo = &lcp_wantoptions[0];
hexley	0:281d6ff68967	787	int can_auth;
hexley	0:281d6ff68967	788	ipcp_options *ipwo = &ipcp_wantoptions[0];
hexley	0:281d6ff68967	789	u32_t remote;
hexley	0:281d6ff68967	790
hexley	0:281d6ff68967	791	/* Default our_name to hostname, and user to our_name */
hexley	0:281d6ff68967	792	if (ppp_settings.our_name[0] == 0 \|\| ppp_settings.usehostname) {
hexley	0:281d6ff68967	793	strcpy(ppp_settings.our_name, ppp_settings.hostname);
hexley	0:281d6ff68967	794	}
hexley	0:281d6ff68967	795
hexley	0:281d6ff68967	796	if (ppp_settings.user[0] == 0) {
hexley	0:281d6ff68967	797	strcpy(ppp_settings.user, ppp_settings.our_name);
hexley	0:281d6ff68967	798	}
hexley	0:281d6ff68967	799
hexley	0:281d6ff68967	800	/* If authentication is required, ask peer for CHAP or PAP. */
hexley	0:281d6ff68967	801	if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
hexley	0:281d6ff68967	802	wo->neg_chap = 1;
hexley	0:281d6ff68967	803	wo->neg_upap = 1;
hexley	0:281d6ff68967	804	}
hexley	0:281d6ff68967	805
hexley	0:281d6ff68967	806	/*
hexley	0:281d6ff68967	807	* Check whether we have appropriate secrets to use
hexley	0:281d6ff68967	808	* to authenticate the peer.
hexley	0:281d6ff68967	809	*/
hexley	0:281d6ff68967	810	can_auth = wo->neg_upap && have_pap_secret();
hexley	0:281d6ff68967	811	if (!can_auth && wo->neg_chap) {
hexley	0:281d6ff68967	812	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
hexley	0:281d6ff68967	813	can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
hexley	0:281d6ff68967	814	}
hexley	0:281d6ff68967	815
hexley	0:281d6ff68967	816	if (ppp_settings.auth_required && !can_auth) {
hexley	0:281d6ff68967	817	ppp_panic("No auth secret");
hexley	0:281d6ff68967	818	}
hexley	0:281d6ff68967	819	}
hexley	0:281d6ff68967	820	#endif /* UNUSED */
hexley	0:281d6ff68967	821
hexley	0:281d6ff68967	822	/*
hexley	0:281d6ff68967	823	* auth_reset - called when LCP is starting negotiations to recheck
hexley	0:281d6ff68967	824	* authentication options, i.e. whether we have appropriate secrets
hexley	0:281d6ff68967	825	* to use for authenticating ourselves and/or the peer.
hexley	0:281d6ff68967	826	*/
hexley	0:281d6ff68967	827	void
hexley	0:281d6ff68967	828	auth_reset(int unit)
hexley	0:281d6ff68967	829	{
hexley	0:281d6ff68967	830	lcp_options *go = &lcp_gotoptions[unit];
hexley	0:281d6ff68967	831	lcp_options *ao = &lcp_allowoptions[0];
hexley	0:281d6ff68967	832	ipcp_options *ipwo = &ipcp_wantoptions[0];
hexley	0:281d6ff68967	833	u32_t remote;
hexley	0:281d6ff68967	834
hexley	0:281d6ff68967	835	AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
hexley	0:281d6ff68967	836	ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 \|\| get_pap_passwd(unit, NULL, NULL));
hexley	0:281d6ff68967	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)/;
hexley	0:281d6ff68967	838
hexley	0:281d6ff68967	839	if (go->neg_upap && !have_pap_secret()) {
hexley	0:281d6ff68967	840	go->neg_upap = 0;
hexley	0:281d6ff68967	841	}
hexley	0:281d6ff68967	842	if (go->neg_chap) {
hexley	0:281d6ff68967	843	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
hexley	0:281d6ff68967	844	if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
hexley	0:281d6ff68967	845	go->neg_chap = 0;
hexley	0:281d6ff68967	846	}
hexley	0:281d6ff68967	847	}
hexley	0:281d6ff68967	848	}
hexley	0:281d6ff68967	849
hexley	0:281d6ff68967	850	#if PAP_SUPPORT
hexley	0:281d6ff68967	851	/*
hexley	0:281d6ff68967	852	* check_passwd - Check the user name and passwd against the PAP secrets
hexley	0:281d6ff68967	853	* file. If requested, also check against the system password database,
hexley	0:281d6ff68967	854	* and login the user if OK.
hexley	0:281d6ff68967	855	*
hexley	0:281d6ff68967	856	* returns:
hexley	0:281d6ff68967	857	* UPAP_AUTHNAK: Authentication failed.
hexley	0:281d6ff68967	858	* UPAP_AUTHACK: Authentication succeeded.
hexley	0:281d6ff68967	859	* In either case, msg points to an appropriate message.
hexley	0:281d6ff68967	860	*/
hexley	0:281d6ff68967	861	u_char
hexley	0:281d6ff68967	862	check_passwd( int unit, char auser, int userlen, char apasswd, int passwdlen, char *msg, int msglen)
hexley	0:281d6ff68967	863	{
hexley	0:281d6ff68967	864	#if 1 /* XXX Assume all entries OK. */
hexley	0:281d6ff68967	865	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	866	LWIP_UNUSED_ARG(auser);
hexley	0:281d6ff68967	867	LWIP_UNUSED_ARG(userlen);
hexley	0:281d6ff68967	868	LWIP_UNUSED_ARG(apasswd);
hexley	0:281d6ff68967	869	LWIP_UNUSED_ARG(passwdlen);
hexley	0:281d6ff68967	870	LWIP_UNUSED_ARG(msglen);
hexley	0:281d6ff68967	871	msg = (char ) 0;
hexley	0:281d6ff68967	872	return UPAP_AUTHACK; /* XXX Assume all entries OK. */
hexley	0:281d6ff68967	873	#else
hexley	0:281d6ff68967	874	u_char ret = 0;
hexley	0:281d6ff68967	875	struct wordlist *addrs = NULL;
hexley	0:281d6ff68967	876	char passwd[256], user[256];
hexley	0:281d6ff68967	877	char secret[MAXWORDLEN];
hexley	0:281d6ff68967	878	static u_short attempts = 0;
hexley	0:281d6ff68967	879
hexley	0:281d6ff68967	880	/*
hexley	0:281d6ff68967	881	* Make copies of apasswd and auser, then null-terminate them.
hexley	0:281d6ff68967	882	*/
hexley	0:281d6ff68967	883	BCOPY(apasswd, passwd, passwdlen);
hexley	0:281d6ff68967	884	passwd[passwdlen] = '\0';
hexley	0:281d6ff68967	885	BCOPY(auser, user, userlen);
hexley	0:281d6ff68967	886	user[userlen] = '\0';
hexley	0:281d6ff68967	887	msg = (char ) 0;
hexley	0:281d6ff68967	888
hexley	0:281d6ff68967	889	/* XXX Validate user name and password. */
hexley	0:281d6ff68967	890	ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
hexley	0:281d6ff68967	891
hexley	0:281d6ff68967	892	if (ret == UPAP_AUTHNAK) {
hexley	0:281d6ff68967	893	if (msg == (char ) 0) {
hexley	0:281d6ff68967	894	*msg = "Login incorrect";
hexley	0:281d6ff68967	895	}
hexley	0:281d6ff68967	896	msglen = strlen(msg);
hexley	0:281d6ff68967	897	/*
hexley	0:281d6ff68967	898	* Frustrate passwd stealer programs.
hexley	0:281d6ff68967	899	* Allow 10 tries, but start backing off after 3 (stolen from login).
hexley	0:281d6ff68967	900	* On 10'th, drop the connection.
hexley	0:281d6ff68967	901	*/
hexley	0:281d6ff68967	902	if (attempts++ >= 10) {
hexley	0:281d6ff68967	903	AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
hexley	0:281d6ff68967	904	/ppp_panic("Excess Bad Logins");/
hexley	0:281d6ff68967	905	}
hexley	0:281d6ff68967	906	if (attempts > 3) {
hexley	0:281d6ff68967	907	/* @todo: this was sleep(), i.e. seconds, not milliseconds
hexley	0:281d6ff68967	908	* I don't think we really need this in lwIP - we would block tcpip_thread!
hexley	0:281d6ff68967	909	*/
hexley	0:281d6ff68967	910	/sys_msleep((attempts - 3) 5);*/
hexley	0:281d6ff68967	911	}
hexley	0:281d6ff68967	912	if (addrs != NULL) {
hexley	0:281d6ff68967	913	free_wordlist(addrs);
hexley	0:281d6ff68967	914	}
hexley	0:281d6ff68967	915	} else {
hexley	0:281d6ff68967	916	attempts = 0; /* Reset count */
hexley	0:281d6ff68967	917	if (msg == (char ) 0) {
hexley	0:281d6ff68967	918	*msg = "Login ok";
hexley	0:281d6ff68967	919	}
hexley	0:281d6ff68967	920	msglen = strlen(msg);
hexley	0:281d6ff68967	921	set_allowed_addrs(unit, addrs);
hexley	0:281d6ff68967	922	}
hexley	0:281d6ff68967	923
hexley	0:281d6ff68967	924	BZERO(passwd, sizeof(passwd));
hexley	0:281d6ff68967	925	BZERO(secret, sizeof(secret));
hexley	0:281d6ff68967	926
hexley	0:281d6ff68967	927	return ret;
hexley	0:281d6ff68967	928	#endif
hexley	0:281d6ff68967	929	}
hexley	0:281d6ff68967	930	#endif /* PAP_SUPPORT */
hexley	0:281d6ff68967	931
hexley	0:281d6ff68967	932	#if 0 /* UNUSED */
hexley	0:281d6ff68967	933	/*
hexley	0:281d6ff68967	934	* This function is needed for PAM.
hexley	0:281d6ff68967	935	*/
hexley	0:281d6ff68967	936
hexley	0:281d6ff68967	937	#ifdef USE_PAM
hexley	0:281d6ff68967	938
hexley	0:281d6ff68967	939	/* lwip does not support PAM*/
hexley	0:281d6ff68967	940
hexley	0:281d6ff68967	941	#endif /* USE_PAM */
hexley	0:281d6ff68967	942
hexley	0:281d6ff68967	943	#endif /* UNUSED */
hexley	0:281d6ff68967	944
hexley	0:281d6ff68967	945
hexley	0:281d6ff68967	946	#if 0 /* UNUSED */
hexley	0:281d6ff68967	947	/*
hexley	0:281d6ff68967	948	* plogin - Check the user name and password against the system
hexley	0:281d6ff68967	949	* password database, and login the user if OK.
hexley	0:281d6ff68967	950	*
hexley	0:281d6ff68967	951	* returns:
hexley	0:281d6ff68967	952	* UPAP_AUTHNAK: Login failed.
hexley	0:281d6ff68967	953	* UPAP_AUTHACK: Login succeeded.
hexley	0:281d6ff68967	954	* In either case, msg points to an appropriate message.
hexley	0:281d6ff68967	955	*/
hexley	0:281d6ff68967	956	static int
hexley	0:281d6ff68967	957	plogin(char user, char passwd, char *msg, int msglen)
hexley	0:281d6ff68967	958	{
hexley	0:281d6ff68967	959
hexley	0:281d6ff68967	960	LWIP_UNUSED_ARG(user);
hexley	0:281d6ff68967	961	LWIP_UNUSED_ARG(passwd);
hexley	0:281d6ff68967	962	LWIP_UNUSED_ARG(msg);
hexley	0:281d6ff68967	963	LWIP_UNUSED_ARG(msglen);
hexley	0:281d6ff68967	964
hexley	0:281d6ff68967	965
hexley	0:281d6ff68967	966	/* The new lines are here align the file when
hexley	0:281d6ff68967	967	* compared against the pppd 2.3.11 code */
hexley	0:281d6ff68967	968
hexley	0:281d6ff68967	969
hexley	0:281d6ff68967	970
hexley	0:281d6ff68967	971
hexley	0:281d6ff68967	972
hexley	0:281d6ff68967	973
hexley	0:281d6ff68967	974
hexley	0:281d6ff68967	975
hexley	0:281d6ff68967	976
hexley	0:281d6ff68967	977
hexley	0:281d6ff68967	978
hexley	0:281d6ff68967	979
hexley	0:281d6ff68967	980
hexley	0:281d6ff68967	981
hexley	0:281d6ff68967	982
hexley	0:281d6ff68967	983
hexley	0:281d6ff68967	984	/* XXX Fail until we decide that we want to support logins. */
hexley	0:281d6ff68967	985	return (UPAP_AUTHNAK);
hexley	0:281d6ff68967	986	}
hexley	0:281d6ff68967	987	#endif
hexley	0:281d6ff68967	988
hexley	0:281d6ff68967	989
hexley	0:281d6ff68967	990
hexley	0:281d6ff68967	991	/*
hexley	0:281d6ff68967	992	* plogout - Logout the user.
hexley	0:281d6ff68967	993	*/
hexley	0:281d6ff68967	994	static void
hexley	0:281d6ff68967	995	plogout(void)
hexley	0:281d6ff68967	996	{
hexley	0:281d6ff68967	997	logged_in = 0;
hexley	0:281d6ff68967	998	}
hexley	0:281d6ff68967	999
hexley	0:281d6ff68967	1000	/*
hexley	0:281d6ff68967	1001	* null_login - Check if a username of "" and a password of "" are
hexley	0:281d6ff68967	1002	* acceptable, and iff so, set the list of acceptable IP addresses
hexley	0:281d6ff68967	1003	* and return 1.
hexley	0:281d6ff68967	1004	*/
hexley	0:281d6ff68967	1005	static int
hexley	0:281d6ff68967	1006	null_login(int unit)
hexley	0:281d6ff68967	1007	{
hexley	0:281d6ff68967	1008	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	1009	/* XXX Fail until we decide that we want to support logins. */
hexley	0:281d6ff68967	1010	return 0;
hexley	0:281d6ff68967	1011	}
hexley	0:281d6ff68967	1012
hexley	0:281d6ff68967	1013
hexley	0:281d6ff68967	1014	/*
hexley	0:281d6ff68967	1015	* get_pap_passwd - get a password for authenticating ourselves with
hexley	0:281d6ff68967	1016	* our peer using PAP. Returns 1 on success, 0 if no suitable password
hexley	0:281d6ff68967	1017	* could be found.
hexley	0:281d6ff68967	1018	*/
hexley	0:281d6ff68967	1019	static int
hexley	0:281d6ff68967	1020	get_pap_passwd(int unit, char user, char passwd)
hexley	0:281d6ff68967	1021	{
hexley	0:281d6ff68967	1022	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	1023	/* normally we would reject PAP if no password is provided,
hexley	0:281d6ff68967	1024	but this causes problems with some providers (like CHT in Taiwan)
hexley	0:281d6ff68967	1025	who incorrectly request PAP and expect a bogus/empty password, so
hexley	0:281d6ff68967	1026	always provide a default user/passwd of "none"/"none"
hexley	0:281d6ff68967	1027
hexley	0:281d6ff68967	1028	@todo: This should be configured by the user, instead of being hardcoded here!
hexley	0:281d6ff68967	1029	*/
hexley	0:281d6ff68967	1030	if(user) {
hexley	0:281d6ff68967	1031	strcpy(user, "none");
hexley	0:281d6ff68967	1032	}
hexley	0:281d6ff68967	1033	if(passwd) {
hexley	0:281d6ff68967	1034	strcpy(passwd, "none");
hexley	0:281d6ff68967	1035	}
hexley	0:281d6ff68967	1036	return 1;
hexley	0:281d6ff68967	1037	}
hexley	0:281d6ff68967	1038
hexley	0:281d6ff68967	1039	/*
hexley	0:281d6ff68967	1040	* have_pap_secret - check whether we have a PAP file with any
hexley	0:281d6ff68967	1041	* secrets that we could possibly use for authenticating the peer.
hexley	0:281d6ff68967	1042	*/
hexley	0:281d6ff68967	1043	static int
hexley	0:281d6ff68967	1044	have_pap_secret(void)
hexley	0:281d6ff68967	1045	{
hexley	0:281d6ff68967	1046	/* XXX Fail until we set up our passwords. */
hexley	0:281d6ff68967	1047	return 0;
hexley	0:281d6ff68967	1048	}
hexley	0:281d6ff68967	1049
hexley	0:281d6ff68967	1050	/*
hexley	0:281d6ff68967	1051	* have_chap_secret - check whether we have a CHAP file with a
hexley	0:281d6ff68967	1052	* secret that we could possibly use for authenticating `client'
hexley	0:281d6ff68967	1053	* on `server'. Either can be the null string, meaning we don't
hexley	0:281d6ff68967	1054	* know the identity yet.
hexley	0:281d6ff68967	1055	*/
hexley	0:281d6ff68967	1056	static int
hexley	0:281d6ff68967	1057	have_chap_secret(char client, char server, u32_t remote)
hexley	0:281d6ff68967	1058	{
hexley	0:281d6ff68967	1059	LWIP_UNUSED_ARG(client);
hexley	0:281d6ff68967	1060	LWIP_UNUSED_ARG(server);
hexley	0:281d6ff68967	1061	LWIP_UNUSED_ARG(remote);
hexley	0:281d6ff68967	1062
hexley	0:281d6ff68967	1063	/* XXX Fail until we set up our passwords. */
hexley	0:281d6ff68967	1064	return 0;
hexley	0:281d6ff68967	1065	}
hexley	0:281d6ff68967	1066	#if CHAP_SUPPORT
hexley	0:281d6ff68967	1067
hexley	0:281d6ff68967	1068	/*
hexley	0:281d6ff68967	1069	* get_secret - open the CHAP secret file and return the secret
hexley	0:281d6ff68967	1070	* for authenticating the given client on the given server.
hexley	0:281d6ff68967	1071	* (We could be either client or server).
hexley	0:281d6ff68967	1072	*/
hexley	0:281d6ff68967	1073	int
hexley	0:281d6ff68967	1074	get_secret(int unit, char client, char server, char secret, int secret_len, int save_addrs)
hexley	0:281d6ff68967	1075	{
hexley	0:281d6ff68967	1076	#if 1
hexley	0:281d6ff68967	1077	int len;
hexley	0:281d6ff68967	1078	struct wordlist *addrs;
hexley	0:281d6ff68967	1079
hexley	0:281d6ff68967	1080	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	1081	LWIP_UNUSED_ARG(server);
hexley	0:281d6ff68967	1082	LWIP_UNUSED_ARG(save_addrs);
hexley	0:281d6ff68967	1083
hexley	0:281d6ff68967	1084	addrs = NULL;
hexley	0:281d6ff68967	1085
hexley	0:281d6ff68967	1086	if(!client \|\| !client[0] \|\| strcmp(client, ppp_settings.user)) {
hexley	0:281d6ff68967	1087	return 0;
hexley	0:281d6ff68967	1088	}
hexley	0:281d6ff68967	1089
hexley	0:281d6ff68967	1090	len = (int)strlen(ppp_settings.passwd);
hexley	0:281d6ff68967	1091	if (len > MAXSECRETLEN) {
hexley	0:281d6ff68967	1092	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
hexley	0:281d6ff68967	1093	len = MAXSECRETLEN;
hexley	0:281d6ff68967	1094	}
hexley	0:281d6ff68967	1095
hexley	0:281d6ff68967	1096	BCOPY(ppp_settings.passwd, secret, len);
hexley	0:281d6ff68967	1097	*secret_len = len;
hexley	0:281d6ff68967	1098
hexley	0:281d6ff68967	1099	return 1;
hexley	0:281d6ff68967	1100	#else
hexley	0:281d6ff68967	1101	int ret = 0, len;
hexley	0:281d6ff68967	1102	struct wordlist *addrs;
hexley	0:281d6ff68967	1103	char secbuf[MAXWORDLEN];
hexley	0:281d6ff68967	1104
hexley	0:281d6ff68967	1105	addrs = NULL;
hexley	0:281d6ff68967	1106	secbuf[0] = 0;
hexley	0:281d6ff68967	1107
hexley	0:281d6ff68967	1108	/* XXX Find secret. */
hexley	0:281d6ff68967	1109	if (ret < 0) {
hexley	0:281d6ff68967	1110	return 0;
hexley	0:281d6ff68967	1111	}
hexley	0:281d6ff68967	1112
hexley	0:281d6ff68967	1113	if (save_addrs) {
hexley	0:281d6ff68967	1114	set_allowed_addrs(unit, addrs);
hexley	0:281d6ff68967	1115	}
hexley	0:281d6ff68967	1116
hexley	0:281d6ff68967	1117	len = strlen(secbuf);
hexley	0:281d6ff68967	1118	if (len > MAXSECRETLEN) {
hexley	0:281d6ff68967	1119	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
hexley	0:281d6ff68967	1120	len = MAXSECRETLEN;
hexley	0:281d6ff68967	1121	}
hexley	0:281d6ff68967	1122
hexley	0:281d6ff68967	1123	BCOPY(secbuf, secret, len);
hexley	0:281d6ff68967	1124	BZERO(secbuf, sizeof(secbuf));
hexley	0:281d6ff68967	1125	*secret_len = len;
hexley	0:281d6ff68967	1126
hexley	0:281d6ff68967	1127	return 1;
hexley	0:281d6ff68967	1128	#endif
hexley	0:281d6ff68967	1129	}
hexley	0:281d6ff68967	1130	#endif /* CHAP_SUPPORT */
hexley	0:281d6ff68967	1131
hexley	0:281d6ff68967	1132
hexley	0:281d6ff68967	1133	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	1134	/*
hexley	0:281d6ff68967	1135	* set_allowed_addrs() - set the list of allowed addresses.
hexley	0:281d6ff68967	1136	*/
hexley	0:281d6ff68967	1137	static void
hexley	0:281d6ff68967	1138	set_allowed_addrs(int unit, struct wordlist *addrs)
hexley	0:281d6ff68967	1139	{
hexley	0:281d6ff68967	1140	if (addresses[unit] != NULL) {
hexley	0:281d6ff68967	1141	free_wordlist(addresses[unit]);
hexley	0:281d6ff68967	1142	}
hexley	0:281d6ff68967	1143	addresses[unit] = addrs;
hexley	0:281d6ff68967	1144
hexley	0:281d6ff68967	1145	#if 0
hexley	0:281d6ff68967	1146	/*
hexley	0:281d6ff68967	1147	* If there's only one authorized address we might as well
hexley	0:281d6ff68967	1148	* ask our peer for that one right away
hexley	0:281d6ff68967	1149	*/
hexley	0:281d6ff68967	1150	if (addrs != NULL && addrs->next == NULL) {
hexley	0:281d6ff68967	1151	char *p = addrs->word;
hexley	0:281d6ff68967	1152	struct ipcp_options *wo = &ipcp_wantoptions[unit];
hexley	0:281d6ff68967	1153	u32_t a;
hexley	0:281d6ff68967	1154	struct hostent *hp;
hexley	0:281d6ff68967	1155
hexley	0:281d6ff68967	1156	if (wo->hisaddr == 0 && p != '!' && p != '-' && strchr(p, '/') == NULL) {
hexley	0:281d6ff68967	1157	hp = gethostbyname(p);
hexley	0:281d6ff68967	1158	if (hp != NULL && hp->h_addrtype == AF_INET) {
hexley	0:281d6ff68967	1159	a = (u32_t )hp->h_addr;
hexley	0:281d6ff68967	1160	} else {
hexley	0:281d6ff68967	1161	a = inet_addr(p);
hexley	0:281d6ff68967	1162	}
hexley	0:281d6ff68967	1163	if (a != (u32_t) -1) {
hexley	0:281d6ff68967	1164	wo->hisaddr = a;
hexley	0:281d6ff68967	1165	}
hexley	0:281d6ff68967	1166	}
hexley	0:281d6ff68967	1167	}
hexley	0:281d6ff68967	1168	#endif
hexley	0:281d6ff68967	1169	}
hexley	0:281d6ff68967	1170	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	1171
hexley	0:281d6ff68967	1172	/*
hexley	0:281d6ff68967	1173	* auth_ip_addr - check whether the peer is authorized to use
hexley	0:281d6ff68967	1174	* a given IP address. Returns 1 if authorized, 0 otherwise.
hexley	0:281d6ff68967	1175	*/
hexley	0:281d6ff68967	1176	int
hexley	0:281d6ff68967	1177	auth_ip_addr(int unit, u32_t addr)
hexley	0:281d6ff68967	1178	{
hexley	0:281d6ff68967	1179	return ip_addr_check(addr, addresses[unit]);
hexley	0:281d6ff68967	1180	}
hexley	0:281d6ff68967	1181
hexley	0:281d6ff68967	1182	static int /* @todo: integrate this funtion into auth_ip_addr()*/
hexley	0:281d6ff68967	1183	ip_addr_check(u32_t addr, struct wordlist *addrs)
hexley	0:281d6ff68967	1184	{
hexley	0:281d6ff68967	1185	/* don't allow loopback or multicast address */
hexley	0:281d6ff68967	1186	if (bad_ip_adrs(addr)) {
hexley	0:281d6ff68967	1187	return 0;
hexley	0:281d6ff68967	1188	}
hexley	0:281d6ff68967	1189
hexley	0:281d6ff68967	1190	if (addrs == NULL) {
hexley	0:281d6ff68967	1191	return !ppp_settings.auth_required; /* no addresses authorized */
hexley	0:281d6ff68967	1192	}
hexley	0:281d6ff68967	1193
hexley	0:281d6ff68967	1194	/* XXX All other addresses allowed. */
hexley	0:281d6ff68967	1195	return 1;
hexley	0:281d6ff68967	1196	}
hexley	0:281d6ff68967	1197
hexley	0:281d6ff68967	1198	/*
hexley	0:281d6ff68967	1199	* bad_ip_adrs - return 1 if the IP address is one we don't want
hexley	0:281d6ff68967	1200	* to use, such as an address in the loopback net or a multicast address.
hexley	0:281d6ff68967	1201	* addr is in network byte order.
hexley	0:281d6ff68967	1202	*/
hexley	0:281d6ff68967	1203	int
hexley	0:281d6ff68967	1204	bad_ip_adrs(u32_t addr)
hexley	0:281d6ff68967	1205	{
hexley	0:281d6ff68967	1206	addr = ntohl(addr);
hexley	0:281d6ff68967	1207	return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
hexley	0:281d6ff68967	1208	\|\| IN_MULTICAST(addr) \|\| IN_BADCLASS(addr);
hexley	0:281d6ff68967	1209	}
hexley	0:281d6ff68967	1210
hexley	0:281d6ff68967	1211	#if 0 /* UNUSED / / PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	1212	/*
hexley	0:281d6ff68967	1213	* some_ip_ok - check a wordlist to see if it authorizes any
hexley	0:281d6ff68967	1214	* IP address(es).
hexley	0:281d6ff68967	1215	*/
hexley	0:281d6ff68967	1216	static int
hexley	0:281d6ff68967	1217	some_ip_ok(struct wordlist *addrs)
hexley	0:281d6ff68967	1218	{
hexley	0:281d6ff68967	1219	for (; addrs != 0; addrs = addrs->next) {
hexley	0:281d6ff68967	1220	if (addrs->word[0] == '-')
hexley	0:281d6ff68967	1221	break;
hexley	0:281d6ff68967	1222	if (addrs->word[0] != '!')
hexley	0:281d6ff68967	1223	return 1; /* some IP address is allowed */
hexley	0:281d6ff68967	1224	}
hexley	0:281d6ff68967	1225	return 0;
hexley	0:281d6ff68967	1226	}
hexley	0:281d6ff68967	1227
hexley	0:281d6ff68967	1228	/*
hexley	0:281d6ff68967	1229	* check_access - complain if a secret file has too-liberal permissions.
hexley	0:281d6ff68967	1230	*/
hexley	0:281d6ff68967	1231	static void
hexley	0:281d6ff68967	1232	check_access(FILE f, char filename)
hexley	0:281d6ff68967	1233	{
hexley	0:281d6ff68967	1234	struct stat sbuf;
hexley	0:281d6ff68967	1235
hexley	0:281d6ff68967	1236	if (fstat(fileno(f), &sbuf) < 0) {
hexley	0:281d6ff68967	1237	warn("cannot stat secret file %s: %m", filename);
hexley	0:281d6ff68967	1238	} else if ((sbuf.st_mode & (S_IRWXG \| S_IRWXO)) != 0) {
hexley	0:281d6ff68967	1239	warn("Warning - secret file %s has world and/or group access",
hexley	0:281d6ff68967	1240	filename);
hexley	0:281d6ff68967	1241	}
hexley	0:281d6ff68967	1242	}
hexley	0:281d6ff68967	1243
hexley	0:281d6ff68967	1244
hexley	0:281d6ff68967	1245	/*
hexley	0:281d6ff68967	1246	* scan_authfile - Scan an authorization file for a secret suitable
hexley	0:281d6ff68967	1247	* for authenticating `client' on `server'. The return value is -1
hexley	0:281d6ff68967	1248	* if no secret is found, otherwise >= 0. The return value has
hexley	0:281d6ff68967	1249	* NONWILD_CLIENT set if the secret didn't have "*" for the client, and
hexley	0:281d6ff68967	1250	* NONWILD_SERVER set if the secret didn't have "*" for the server.
hexley	0:281d6ff68967	1251	* Any following words on the line up to a "--" (i.e. address authorization
hexley	0:281d6ff68967	1252	* info) are placed in a wordlist and returned in *addrs. Any
hexley	0:281d6ff68967	1253	* following words (extra options) are placed in a wordlist and
hexley	0:281d6ff68967	1254	* returned in *opts.
hexley	0:281d6ff68967	1255	* We assume secret is NULL or points to MAXWORDLEN bytes of space.
hexley	0:281d6ff68967	1256	*/
hexley	0:281d6ff68967	1257	static int
hexley	0:281d6ff68967	1258	scan_authfile(FILE f, char client, char server, char secret, struct wordlist addrs, struct wordlist opts, char *filename)
hexley	0:281d6ff68967	1259	{
hexley	0:281d6ff68967	1260	/* We do not (currently) need this in lwip */
hexley	0:281d6ff68967	1261	return 0; /* dummy */
hexley	0:281d6ff68967	1262	}
hexley	0:281d6ff68967	1263	/*
hexley	0:281d6ff68967	1264	* free_wordlist - release memory allocated for a wordlist.
hexley	0:281d6ff68967	1265	*/
hexley	0:281d6ff68967	1266	static void
hexley	0:281d6ff68967	1267	free_wordlist(struct wordlist *wp)
hexley	0:281d6ff68967	1268	{
hexley	0:281d6ff68967	1269	struct wordlist *next;
hexley	0:281d6ff68967	1270
hexley	0:281d6ff68967	1271	while (wp != NULL) {
hexley	0:281d6ff68967	1272	next = wp->next;
hexley	0:281d6ff68967	1273	free(wp);
hexley	0:281d6ff68967	1274	wp = next;
hexley	0:281d6ff68967	1275	}
hexley	0:281d6ff68967	1276	}
hexley	0:281d6ff68967	1277
hexley	0:281d6ff68967	1278	/*
hexley	0:281d6ff68967	1279	* auth_script_done - called when the auth-up or auth-down script
hexley	0:281d6ff68967	1280	* has finished.
hexley	0:281d6ff68967	1281	*/
hexley	0:281d6ff68967	1282	static void
hexley	0:281d6ff68967	1283	auth_script_done(void *arg)
hexley	0:281d6ff68967	1284	{
hexley	0:281d6ff68967	1285	auth_script_pid = 0;
hexley	0:281d6ff68967	1286	switch (auth_script_state) {
hexley	0:281d6ff68967	1287	case s_up:
hexley	0:281d6ff68967	1288	if (auth_state == s_down) {
hexley	0:281d6ff68967	1289	auth_script_state = s_down;
hexley	0:281d6ff68967	1290	auth_script(_PATH_AUTHDOWN);
hexley	0:281d6ff68967	1291	}
hexley	0:281d6ff68967	1292	break;
hexley	0:281d6ff68967	1293	case s_down:
hexley	0:281d6ff68967	1294	if (auth_state == s_up) {
hexley	0:281d6ff68967	1295	auth_script_state = s_up;
hexley	0:281d6ff68967	1296	auth_script(_PATH_AUTHUP);
hexley	0:281d6ff68967	1297	}
hexley	0:281d6ff68967	1298	break;
hexley	0:281d6ff68967	1299	}
hexley	0:281d6ff68967	1300	}
hexley	0:281d6ff68967	1301
hexley	0:281d6ff68967	1302	/*
hexley	0:281d6ff68967	1303	* auth_script - execute a script with arguments
hexley	0:281d6ff68967	1304	* interface-name peer-name real-user tty speed
hexley	0:281d6ff68967	1305	*/
hexley	0:281d6ff68967	1306	static void
hexley	0:281d6ff68967	1307	auth_script(char *script)
hexley	0:281d6ff68967	1308	{
hexley	0:281d6ff68967	1309	char strspeed[32];
hexley	0:281d6ff68967	1310	struct passwd *pw;
hexley	0:281d6ff68967	1311	char struid[32];
hexley	0:281d6ff68967	1312	char *user_name;
hexley	0:281d6ff68967	1313	char *argv[8];
hexley	0:281d6ff68967	1314
hexley	0:281d6ff68967	1315	if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
hexley	0:281d6ff68967	1316	user_name = pw->pw_name;
hexley	0:281d6ff68967	1317	else {
hexley	0:281d6ff68967	1318	slprintf(struid, sizeof(struid), "%d", getuid());
hexley	0:281d6ff68967	1319	user_name = struid;
hexley	0:281d6ff68967	1320	}
hexley	0:281d6ff68967	1321	slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
hexley	0:281d6ff68967	1322
hexley	0:281d6ff68967	1323	argv[0] = script;
hexley	0:281d6ff68967	1324	argv[1] = ifname;
hexley	0:281d6ff68967	1325	argv[2] = peer_authname;
hexley	0:281d6ff68967	1326	argv[3] = user_name;
hexley	0:281d6ff68967	1327	argv[4] = devnam;
hexley	0:281d6ff68967	1328	argv[5] = strspeed;
hexley	0:281d6ff68967	1329	argv[6] = NULL;
hexley	0:281d6ff68967	1330
hexley	0:281d6ff68967	1331	auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
hexley	0:281d6ff68967	1332	}
hexley	0:281d6ff68967	1333	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
hexley	0:281d6ff68967	1334	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	19 Nov 2010
Imports:	44
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	1

lwip/netif/ppp/auth.c@0:281d6ff68967, 2010-11-19 (annotated)

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