ZG2100NetIfSource - ZG2100 Network interface source

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ZG2100 Network interface source

lwip/netif/ppp/auth.c@0:b802fc31f1db, 2010-07-09 (annotated)

Committer:: donatien
Date:: Fri Jul 09 15:37:23 2010 +0000
Revision:: 0:b802fc31f1db

Who changed what in which revision?

User	Revision	Line number	New contents of line
donatien	0:b802fc31f1db	1	/*****************************************************************************
donatien	0:b802fc31f1db	2	* auth.c - Network Authentication and Phase Control program file.
donatien	0:b802fc31f1db	3	*
donatien	0:b802fc31f1db	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
donatien	0:b802fc31f1db	5	* Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
donatien	0:b802fc31f1db	6	*
donatien	0:b802fc31f1db	7	* The authors hereby grant permission to use, copy, modify, distribute,
donatien	0:b802fc31f1db	8	* and license this software and its documentation for any purpose, provided
donatien	0:b802fc31f1db	9	* that existing copyright notices are retained in all copies and that this
donatien	0:b802fc31f1db	10	* notice and the following disclaimer are included verbatim in any
donatien	0:b802fc31f1db	11	* distributions. No written agreement, license, or royalty fee is required
donatien	0:b802fc31f1db	12	* for any of the authorized uses.
donatien	0:b802fc31f1db	13	*
donatien	0:b802fc31f1db	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
donatien	0:b802fc31f1db	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
donatien	0:b802fc31f1db	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
donatien	0:b802fc31f1db	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
donatien	0:b802fc31f1db	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
donatien	0:b802fc31f1db	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
donatien	0:b802fc31f1db	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
donatien	0:b802fc31f1db	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
donatien	0:b802fc31f1db	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
donatien	0:b802fc31f1db	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
donatien	0:b802fc31f1db	24	*
donatien	0:b802fc31f1db	25	******************************************************************************
donatien	0:b802fc31f1db	26	* REVISION HISTORY
donatien	0:b802fc31f1db	27	*
donatien	0:b802fc31f1db	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
donatien	0:b802fc31f1db	29	* Ported to lwIP.
donatien	0:b802fc31f1db	30	* 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
donatien	0:b802fc31f1db	31	* Ported from public pppd code.
donatien	0:b802fc31f1db	32	*****************************************************************************/
donatien	0:b802fc31f1db	33	/*
donatien	0:b802fc31f1db	34	* auth.c - PPP authentication and phase control.
donatien	0:b802fc31f1db	35	*
donatien	0:b802fc31f1db	36	* Copyright (c) 1993 The Australian National University.
donatien	0:b802fc31f1db	37	* All rights reserved.
donatien	0:b802fc31f1db	38	*
donatien	0:b802fc31f1db	39	* Redistribution and use in source and binary forms are permitted
donatien	0:b802fc31f1db	40	* provided that the above copyright notice and this paragraph are
donatien	0:b802fc31f1db	41	* duplicated in all such forms and that any documentation,
donatien	0:b802fc31f1db	42	* advertising materials, and other materials related to such
donatien	0:b802fc31f1db	43	* distribution and use acknowledge that the software was developed
donatien	0:b802fc31f1db	44	* by the Australian National University. The name of the University
donatien	0:b802fc31f1db	45	* may not be used to endorse or promote products derived from this
donatien	0:b802fc31f1db	46	* software without specific prior written permission.
donatien	0:b802fc31f1db	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
donatien	0:b802fc31f1db	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
donatien	0:b802fc31f1db	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
donatien	0:b802fc31f1db	50	*
donatien	0:b802fc31f1db	51	* Copyright (c) 1989 Carnegie Mellon University.
donatien	0:b802fc31f1db	52	* All rights reserved.
donatien	0:b802fc31f1db	53	*
donatien	0:b802fc31f1db	54	* Redistribution and use in source and binary forms are permitted
donatien	0:b802fc31f1db	55	* provided that the above copyright notice and this paragraph are
donatien	0:b802fc31f1db	56	* duplicated in all such forms and that any documentation,
donatien	0:b802fc31f1db	57	* advertising materials, and other materials related to such
donatien	0:b802fc31f1db	58	* distribution and use acknowledge that the software was developed
donatien	0:b802fc31f1db	59	* by Carnegie Mellon University. The name of the
donatien	0:b802fc31f1db	60	* University may not be used to endorse or promote products derived
donatien	0:b802fc31f1db	61	* from this software without specific prior written permission.
donatien	0:b802fc31f1db	62	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
donatien	0:b802fc31f1db	63	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
donatien	0:b802fc31f1db	64	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
donatien	0:b802fc31f1db	65	*/
donatien	0:b802fc31f1db	66
donatien	0:b802fc31f1db	67	#include "lwip/opt.h"
donatien	0:b802fc31f1db	68
donatien	0:b802fc31f1db	69	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
donatien	0:b802fc31f1db	70
donatien	0:b802fc31f1db	71	#include "ppp.h"
donatien	0:b802fc31f1db	72	#include "pppdebug.h"
donatien	0:b802fc31f1db	73
donatien	0:b802fc31f1db	74	#include "fsm.h"
donatien	0:b802fc31f1db	75	#include "lcp.h"
donatien	0:b802fc31f1db	76	#include "pap.h"
donatien	0:b802fc31f1db	77	#include "chap.h"
donatien	0:b802fc31f1db	78	#include "auth.h"
donatien	0:b802fc31f1db	79	#include "ipcp.h"
donatien	0:b802fc31f1db	80
donatien	0:b802fc31f1db	81	#if CBCP_SUPPORT
donatien	0:b802fc31f1db	82	#include "cbcp.h"
donatien	0:b802fc31f1db	83	#endif /* CBCP_SUPPORT */
donatien	0:b802fc31f1db	84
donatien	0:b802fc31f1db	85	#include "lwip/inet.h"
donatien	0:b802fc31f1db	86
donatien	0:b802fc31f1db	87	#include <string.h>
donatien	0:b802fc31f1db	88
donatien	0:b802fc31f1db	89	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	90	/* Bits in scan_authfile return value */
donatien	0:b802fc31f1db	91	#define NONWILD_SERVER 1
donatien	0:b802fc31f1db	92	#define NONWILD_CLIENT 2
donatien	0:b802fc31f1db	93
donatien	0:b802fc31f1db	94	#define ISWILD(word) (word[0] == '*' && word[1] == 0)
donatien	0:b802fc31f1db	95	#endif /* UNUSED */
donatien	0:b802fc31f1db	96
donatien	0:b802fc31f1db	97	#if PAP_SUPPORT \|\| CHAP_SUPPORT
donatien	0:b802fc31f1db	98	/* The name by which the peer authenticated itself to us. */
donatien	0:b802fc31f1db	99	static char peer_authname[MAXNAMELEN];
donatien	0:b802fc31f1db	100	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	101
donatien	0:b802fc31f1db	102	/* Records which authentication operations haven't completed yet. */
donatien	0:b802fc31f1db	103	static int auth_pending[NUM_PPP];
donatien	0:b802fc31f1db	104
donatien	0:b802fc31f1db	105	/* Set if we have successfully called plogin() */
donatien	0:b802fc31f1db	106	static int logged_in;
donatien	0:b802fc31f1db	107
donatien	0:b802fc31f1db	108	/* Set if we have run the /etc/ppp/auth-up script. */
donatien	0:b802fc31f1db	109	static int did_authup; /* @todo, we don't need this in lwip*/
donatien	0:b802fc31f1db	110
donatien	0:b802fc31f1db	111	/* List of addresses which the peer may use. */
donatien	0:b802fc31f1db	112	static struct wordlist *addresses[NUM_PPP];
donatien	0:b802fc31f1db	113
donatien	0:b802fc31f1db	114	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	115	/* Wordlist giving addresses which the peer may use
donatien	0:b802fc31f1db	116	without authenticating itself. */
donatien	0:b802fc31f1db	117	static struct wordlist *noauth_addrs;
donatien	0:b802fc31f1db	118
donatien	0:b802fc31f1db	119	/* Extra options to apply, from the secrets file entry for the peer. */
donatien	0:b802fc31f1db	120	static struct wordlist *extra_options;
donatien	0:b802fc31f1db	121	#endif /* UNUSED */
donatien	0:b802fc31f1db	122
donatien	0:b802fc31f1db	123	/* Number of network protocols which we have opened. */
donatien	0:b802fc31f1db	124	static int num_np_open;
donatien	0:b802fc31f1db	125
donatien	0:b802fc31f1db	126	/* Number of network protocols which have come up. */
donatien	0:b802fc31f1db	127	static int num_np_up;
donatien	0:b802fc31f1db	128
donatien	0:b802fc31f1db	129	#if PAP_SUPPORT \|\| CHAP_SUPPORT
donatien	0:b802fc31f1db	130	/* Set if we got the contents of passwd[] from the pap-secrets file. */
donatien	0:b802fc31f1db	131	static int passwd_from_file;
donatien	0:b802fc31f1db	132	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	133
donatien	0:b802fc31f1db	134	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	135	/* Set if we require authentication only because we have a default route. */
donatien	0:b802fc31f1db	136	static bool default_auth;
donatien	0:b802fc31f1db	137
donatien	0:b802fc31f1db	138	/* Hook to enable a plugin to control the idle time limit */
donatien	0:b802fc31f1db	139	int (idle_time_hook) __P((struct ppp_idle )) = NULL;
donatien	0:b802fc31f1db	140
donatien	0:b802fc31f1db	141	/* Hook for a plugin to say whether we can possibly authenticate any peer */
donatien	0:b802fc31f1db	142	int (*pap_check_hook) __P((void)) = NULL;
donatien	0:b802fc31f1db	143
donatien	0:b802fc31f1db	144	/* Hook for a plugin to check the PAP user and password */
donatien	0:b802fc31f1db	145	int (pap_auth_hook) __P((char user, char passwd, char *msgp,
donatien	0:b802fc31f1db	146	struct wordlist **paddrs,
donatien	0:b802fc31f1db	147	struct wordlist **popts)) = NULL;
donatien	0:b802fc31f1db	148
donatien	0:b802fc31f1db	149	/* Hook for a plugin to know about the PAP user logout */
donatien	0:b802fc31f1db	150	void (*pap_logout_hook) __P((void)) = NULL;
donatien	0:b802fc31f1db	151
donatien	0:b802fc31f1db	152	/* Hook for a plugin to get the PAP password for authenticating us */
donatien	0:b802fc31f1db	153	int (pap_passwd_hook) __P((char user, char *passwd)) = NULL;
donatien	0:b802fc31f1db	154
donatien	0:b802fc31f1db	155	/*
donatien	0:b802fc31f1db	156	* This is used to ensure that we don't start an auth-up/down
donatien	0:b802fc31f1db	157	* script while one is already running.
donatien	0:b802fc31f1db	158	*/
donatien	0:b802fc31f1db	159	enum script_state {
donatien	0:b802fc31f1db	160	s_down,
donatien	0:b802fc31f1db	161	s_up
donatien	0:b802fc31f1db	162	};
donatien	0:b802fc31f1db	163
donatien	0:b802fc31f1db	164	static enum script_state auth_state = s_down;
donatien	0:b802fc31f1db	165	static enum script_state auth_script_state = s_down;
donatien	0:b802fc31f1db	166	static pid_t auth_script_pid = 0;
donatien	0:b802fc31f1db	167
donatien	0:b802fc31f1db	168	/*
donatien	0:b802fc31f1db	169	* Option variables.
donatien	0:b802fc31f1db	170	* lwip: some of these are present in the ppp_settings structure
donatien	0:b802fc31f1db	171	*/
donatien	0:b802fc31f1db	172	bool uselogin = 0; /* Use /etc/passwd for checking PAP */
donatien	0:b802fc31f1db	173	bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
donatien	0:b802fc31f1db	174	bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
donatien	0:b802fc31f1db	175	bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
donatien	0:b802fc31f1db	176	bool usehostname = 0; /* Use hostname for our_name */
donatien	0:b802fc31f1db	177	bool auth_required = 0; /* Always require authentication from peer */
donatien	0:b802fc31f1db	178	bool allow_any_ip = 0; /* Allow peer to use any IP address */
donatien	0:b802fc31f1db	179	bool explicit_remote = 0; /* User specified explicit remote name */
donatien	0:b802fc31f1db	180	char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
donatien	0:b802fc31f1db	181
donatien	0:b802fc31f1db	182	#endif /* UNUSED */
donatien	0:b802fc31f1db	183
donatien	0:b802fc31f1db	184	/* Bits in auth_pending[] */
donatien	0:b802fc31f1db	185	#define PAP_WITHPEER 1
donatien	0:b802fc31f1db	186	#define PAP_PEER 2
donatien	0:b802fc31f1db	187	#define CHAP_WITHPEER 4
donatien	0:b802fc31f1db	188	#define CHAP_PEER 8
donatien	0:b802fc31f1db	189
donatien	0:b802fc31f1db	190	/* @todo, move this somewhere */
donatien	0:b802fc31f1db	191	/* Used for storing a sequence of words. Usually malloced. */
donatien	0:b802fc31f1db	192	struct wordlist {
donatien	0:b802fc31f1db	193	struct wordlist *next;
donatien	0:b802fc31f1db	194	char word[1];
donatien	0:b802fc31f1db	195	};
donatien	0:b802fc31f1db	196
donatien	0:b802fc31f1db	197
donatien	0:b802fc31f1db	198	extern char crypt (const char , const char *);
donatien	0:b802fc31f1db	199
donatien	0:b802fc31f1db	200	/* Prototypes for procedures local to this file. */
donatien	0:b802fc31f1db	201
donatien	0:b802fc31f1db	202	static void network_phase (int);
donatien	0:b802fc31f1db	203	static void check_idle (void *);
donatien	0:b802fc31f1db	204	static void connect_time_expired (void *);
donatien	0:b802fc31f1db	205	#if 0
donatien	0:b802fc31f1db	206	static int plogin (char , char , char *, int );
donatien	0:b802fc31f1db	207	#endif
donatien	0:b802fc31f1db	208	static void plogout (void);
donatien	0:b802fc31f1db	209	static int null_login (int);
donatien	0:b802fc31f1db	210	static int get_pap_passwd (int, char , char );
donatien	0:b802fc31f1db	211	static int have_pap_secret (void);
donatien	0:b802fc31f1db	212	static int have_chap_secret (char , char , u32_t);
donatien	0:b802fc31f1db	213	static int ip_addr_check (u32_t, struct wordlist *);
donatien	0:b802fc31f1db	214
donatien	0:b802fc31f1db	215	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	216	static int scan_authfile (FILE , char , char , char ,
donatien	0:b802fc31f1db	217	struct wordlist , struct wordlist ,
donatien	0:b802fc31f1db	218	char *);
donatien	0:b802fc31f1db	219	static void free_wordlist (struct wordlist *);
donatien	0:b802fc31f1db	220	static void auth_script (char *);
donatien	0:b802fc31f1db	221	static void auth_script_done (void *);
donatien	0:b802fc31f1db	222	static void set_allowed_addrs (int unit, struct wordlist *addrs);
donatien	0:b802fc31f1db	223	static int some_ip_ok (struct wordlist *);
donatien	0:b802fc31f1db	224	static int setupapfile (char **);
donatien	0:b802fc31f1db	225	static int privgroup (char **);
donatien	0:b802fc31f1db	226	static int set_noauth_addr (char **);
donatien	0:b802fc31f1db	227	static void check_access (FILE , char );
donatien	0:b802fc31f1db	228	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	229
donatien	0:b802fc31f1db	230	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	231	/*
donatien	0:b802fc31f1db	232	* Authentication-related options.
donatien	0:b802fc31f1db	233	*/
donatien	0:b802fc31f1db	234	option_t auth_options[] = {
donatien	0:b802fc31f1db	235	{ "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
donatien	0:b802fc31f1db	236	"Require PAP authentication from peer", 1, &auth_required },
donatien	0:b802fc31f1db	237	{ "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
donatien	0:b802fc31f1db	238	"Require PAP authentication from peer", 1, &auth_required },
donatien	0:b802fc31f1db	239	{ "refuse-pap", o_bool, &refuse_pap,
donatien	0:b802fc31f1db	240	"Don't agree to auth to peer with PAP", 1 },
donatien	0:b802fc31f1db	241	{ "-pap", o_bool, &refuse_pap,
donatien	0:b802fc31f1db	242	"Don't allow PAP authentication with peer", 1 },
donatien	0:b802fc31f1db	243	{ "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
donatien	0:b802fc31f1db	244	"Require CHAP authentication from peer", 1, &auth_required },
donatien	0:b802fc31f1db	245	{ "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
donatien	0:b802fc31f1db	246	"Require CHAP authentication from peer", 1, &auth_required },
donatien	0:b802fc31f1db	247	{ "refuse-chap", o_bool, &refuse_chap,
donatien	0:b802fc31f1db	248	"Don't agree to auth to peer with CHAP", 1 },
donatien	0:b802fc31f1db	249	{ "-chap", o_bool, &refuse_chap,
donatien	0:b802fc31f1db	250	"Don't allow CHAP authentication with peer", 1 },
donatien	0:b802fc31f1db	251	{ "name", o_string, our_name,
donatien	0:b802fc31f1db	252	"Set local name for authentication",
donatien	0:b802fc31f1db	253	OPT_PRIV\|OPT_STATIC, NULL, MAXNAMELEN },
donatien	0:b802fc31f1db	254	{ "user", o_string, user,
donatien	0:b802fc31f1db	255	"Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
donatien	0:b802fc31f1db	256	{ "usehostname", o_bool, &usehostname,
donatien	0:b802fc31f1db	257	"Must use hostname for authentication", 1 },
donatien	0:b802fc31f1db	258	{ "remotename", o_string, remote_name,
donatien	0:b802fc31f1db	259	"Set remote name for authentication", OPT_STATIC,
donatien	0:b802fc31f1db	260	&explicit_remote, MAXNAMELEN },
donatien	0:b802fc31f1db	261	{ "auth", o_bool, &auth_required,
donatien	0:b802fc31f1db	262	"Require authentication from peer", 1 },
donatien	0:b802fc31f1db	263	{ "noauth", o_bool, &auth_required,
donatien	0:b802fc31f1db	264	"Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
donatien	0:b802fc31f1db	265	{ "login", o_bool, &uselogin,
donatien	0:b802fc31f1db	266	"Use system password database for PAP", 1 },
donatien	0:b802fc31f1db	267	{ "papcrypt", o_bool, &cryptpap,
donatien	0:b802fc31f1db	268	"PAP passwords are encrypted", 1 },
donatien	0:b802fc31f1db	269	{ "+ua", o_special, (void *)setupapfile,
donatien	0:b802fc31f1db	270	"Get PAP user and password from file" },
donatien	0:b802fc31f1db	271	{ "password", o_string, passwd,
donatien	0:b802fc31f1db	272	"Password for authenticating us to the peer", OPT_STATIC,
donatien	0:b802fc31f1db	273	NULL, MAXSECRETLEN },
donatien	0:b802fc31f1db	274	{ "privgroup", o_special, (void *)privgroup,
donatien	0:b802fc31f1db	275	"Allow group members to use privileged options", OPT_PRIV },
donatien	0:b802fc31f1db	276	{ "allow-ip", o_special, (void *)set_noauth_addr,
donatien	0:b802fc31f1db	277	"Set IP address(es) which can be used without authentication",
donatien	0:b802fc31f1db	278	OPT_PRIV },
donatien	0:b802fc31f1db	279	{ NULL }
donatien	0:b802fc31f1db	280	};
donatien	0:b802fc31f1db	281	#endif /* UNUSED */
donatien	0:b802fc31f1db	282	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	283	/*
donatien	0:b802fc31f1db	284	* setupapfile - specifies UPAP info for authenticating with peer.
donatien	0:b802fc31f1db	285	*/
donatien	0:b802fc31f1db	286	static int
donatien	0:b802fc31f1db	287	setupapfile(char **argv)
donatien	0:b802fc31f1db	288	{
donatien	0:b802fc31f1db	289	FILE * ufile;
donatien	0:b802fc31f1db	290	int l;
donatien	0:b802fc31f1db	291
donatien	0:b802fc31f1db	292	lcp_allowoptions[0].neg_upap = 1;
donatien	0:b802fc31f1db	293
donatien	0:b802fc31f1db	294	/* open user info file */
donatien	0:b802fc31f1db	295	seteuid(getuid());
donatien	0:b802fc31f1db	296	ufile = fopen(*argv, "r");
donatien	0:b802fc31f1db	297	seteuid(0);
donatien	0:b802fc31f1db	298	if (ufile == NULL) {
donatien	0:b802fc31f1db	299	option_error("unable to open user login data file %s", *argv);
donatien	0:b802fc31f1db	300	return 0;
donatien	0:b802fc31f1db	301	}
donatien	0:b802fc31f1db	302	check_access(ufile, *argv);
donatien	0:b802fc31f1db	303
donatien	0:b802fc31f1db	304	/* get username */
donatien	0:b802fc31f1db	305	if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
donatien	0:b802fc31f1db	306	\|\| fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
donatien	0:b802fc31f1db	307	option_error("unable to read user login data file %s", *argv);
donatien	0:b802fc31f1db	308	return 0;
donatien	0:b802fc31f1db	309	}
donatien	0:b802fc31f1db	310	fclose(ufile);
donatien	0:b802fc31f1db	311
donatien	0:b802fc31f1db	312	/* get rid of newlines */
donatien	0:b802fc31f1db	313	l = strlen(user);
donatien	0:b802fc31f1db	314	if (l > 0 && user[l-1] == '\n')
donatien	0:b802fc31f1db	315	user[l-1] = 0;
donatien	0:b802fc31f1db	316	l = strlen(passwd);
donatien	0:b802fc31f1db	317	if (l > 0 && passwd[l-1] == '\n')
donatien	0:b802fc31f1db	318	passwd[l-1] = 0;
donatien	0:b802fc31f1db	319
donatien	0:b802fc31f1db	320	return (1);
donatien	0:b802fc31f1db	321	}
donatien	0:b802fc31f1db	322	#endif /* UNUSED */
donatien	0:b802fc31f1db	323
donatien	0:b802fc31f1db	324	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	325	/*
donatien	0:b802fc31f1db	326	* privgroup - allow members of the group to have privileged access.
donatien	0:b802fc31f1db	327	*/
donatien	0:b802fc31f1db	328	static int
donatien	0:b802fc31f1db	329	privgroup(char **argv)
donatien	0:b802fc31f1db	330	{
donatien	0:b802fc31f1db	331	struct group *g;
donatien	0:b802fc31f1db	332	int i;
donatien	0:b802fc31f1db	333
donatien	0:b802fc31f1db	334	g = getgrnam(*argv);
donatien	0:b802fc31f1db	335	if (g == 0) {
donatien	0:b802fc31f1db	336	option_error("group %s is unknown", *argv);
donatien	0:b802fc31f1db	337	return 0;
donatien	0:b802fc31f1db	338	}
donatien	0:b802fc31f1db	339	for (i = 0; i < ngroups; ++i) {
donatien	0:b802fc31f1db	340	if (groups[i] == g->gr_gid) {
donatien	0:b802fc31f1db	341	privileged = 1;
donatien	0:b802fc31f1db	342	break;
donatien	0:b802fc31f1db	343	}
donatien	0:b802fc31f1db	344	}
donatien	0:b802fc31f1db	345	return 1;
donatien	0:b802fc31f1db	346	}
donatien	0:b802fc31f1db	347	#endif
donatien	0:b802fc31f1db	348
donatien	0:b802fc31f1db	349	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	350	/*
donatien	0:b802fc31f1db	351	* set_noauth_addr - set address(es) that can be used without authentication.
donatien	0:b802fc31f1db	352	* Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
donatien	0:b802fc31f1db	353	*/
donatien	0:b802fc31f1db	354	static int
donatien	0:b802fc31f1db	355	set_noauth_addr(char **argv)
donatien	0:b802fc31f1db	356	{
donatien	0:b802fc31f1db	357	char addr = argv;
donatien	0:b802fc31f1db	358	int l = strlen(addr);
donatien	0:b802fc31f1db	359	struct wordlist *wp;
donatien	0:b802fc31f1db	360
donatien	0:b802fc31f1db	361	wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
donatien	0:b802fc31f1db	362	if (wp == NULL)
donatien	0:b802fc31f1db	363	novm("allow-ip argument");
donatien	0:b802fc31f1db	364	wp->word = (char *) (wp + 1);
donatien	0:b802fc31f1db	365	wp->next = noauth_addrs;
donatien	0:b802fc31f1db	366	BCOPY(addr, wp->word, l);
donatien	0:b802fc31f1db	367	noauth_addrs = wp;
donatien	0:b802fc31f1db	368	return 1;
donatien	0:b802fc31f1db	369	}
donatien	0:b802fc31f1db	370	#endif /* UNUSED */
donatien	0:b802fc31f1db	371
donatien	0:b802fc31f1db	372	/*
donatien	0:b802fc31f1db	373	* An Open on LCP has requested a change from Dead to Establish phase.
donatien	0:b802fc31f1db	374	* Do what's necessary to bring the physical layer up.
donatien	0:b802fc31f1db	375	*/
donatien	0:b802fc31f1db	376	void
donatien	0:b802fc31f1db	377	link_required(int unit)
donatien	0:b802fc31f1db	378	{
donatien	0:b802fc31f1db	379	LWIP_UNUSED_ARG(unit);
donatien	0:b802fc31f1db	380
donatien	0:b802fc31f1db	381	AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
donatien	0:b802fc31f1db	382	}
donatien	0:b802fc31f1db	383
donatien	0:b802fc31f1db	384	/*
donatien	0:b802fc31f1db	385	* LCP has terminated the link; go to the Dead phase and take the
donatien	0:b802fc31f1db	386	* physical layer down.
donatien	0:b802fc31f1db	387	*/
donatien	0:b802fc31f1db	388	void
donatien	0:b802fc31f1db	389	link_terminated(int unit)
donatien	0:b802fc31f1db	390	{
donatien	0:b802fc31f1db	391	AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
donatien	0:b802fc31f1db	392	if (lcp_phase[unit] == PHASE_DEAD) {
donatien	0:b802fc31f1db	393	return;
donatien	0:b802fc31f1db	394	}
donatien	0:b802fc31f1db	395	if (logged_in) {
donatien	0:b802fc31f1db	396	plogout();
donatien	0:b802fc31f1db	397	}
donatien	0:b802fc31f1db	398	lcp_phase[unit] = PHASE_DEAD;
donatien	0:b802fc31f1db	399	AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
donatien	0:b802fc31f1db	400	pppLinkTerminated(unit);
donatien	0:b802fc31f1db	401	}
donatien	0:b802fc31f1db	402
donatien	0:b802fc31f1db	403	/*
donatien	0:b802fc31f1db	404	* LCP has gone down; it will either die or try to re-establish.
donatien	0:b802fc31f1db	405	*/
donatien	0:b802fc31f1db	406	void
donatien	0:b802fc31f1db	407	link_down(int unit)
donatien	0:b802fc31f1db	408	{
donatien	0:b802fc31f1db	409	int i;
donatien	0:b802fc31f1db	410	struct protent *protp;
donatien	0:b802fc31f1db	411
donatien	0:b802fc31f1db	412	AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
donatien	0:b802fc31f1db	413
donatien	0:b802fc31f1db	414	if (did_authup) {
donatien	0:b802fc31f1db	415	/* XXX Do link down processing. */
donatien	0:b802fc31f1db	416	did_authup = 0;
donatien	0:b802fc31f1db	417	}
donatien	0:b802fc31f1db	418	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
donatien	0:b802fc31f1db	419	if (!protp->enabled_flag) {
donatien	0:b802fc31f1db	420	continue;
donatien	0:b802fc31f1db	421	}
donatien	0:b802fc31f1db	422	if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
donatien	0:b802fc31f1db	423	(*protp->lowerdown)(unit);
donatien	0:b802fc31f1db	424	}
donatien	0:b802fc31f1db	425	if (protp->protocol < 0xC000 && protp->close != NULL) {
donatien	0:b802fc31f1db	426	(*protp->close)(unit, "LCP down");
donatien	0:b802fc31f1db	427	}
donatien	0:b802fc31f1db	428	}
donatien	0:b802fc31f1db	429	num_np_open = 0; /* number of network protocols we have opened */
donatien	0:b802fc31f1db	430	num_np_up = 0; /* Number of network protocols which have come up */
donatien	0:b802fc31f1db	431
donatien	0:b802fc31f1db	432	if (lcp_phase[unit] != PHASE_DEAD) {
donatien	0:b802fc31f1db	433	lcp_phase[unit] = PHASE_TERMINATE;
donatien	0:b802fc31f1db	434	}
donatien	0:b802fc31f1db	435	pppLinkDown(unit);
donatien	0:b802fc31f1db	436	}
donatien	0:b802fc31f1db	437
donatien	0:b802fc31f1db	438	/*
donatien	0:b802fc31f1db	439	* The link is established.
donatien	0:b802fc31f1db	440	* Proceed to the Dead, Authenticate or Network phase as appropriate.
donatien	0:b802fc31f1db	441	*/
donatien	0:b802fc31f1db	442	void
donatien	0:b802fc31f1db	443	link_established(int unit)
donatien	0:b802fc31f1db	444	{
donatien	0:b802fc31f1db	445	int auth;
donatien	0:b802fc31f1db	446	int i;
donatien	0:b802fc31f1db	447	struct protent *protp;
donatien	0:b802fc31f1db	448	lcp_options *wo = &lcp_wantoptions[unit];
donatien	0:b802fc31f1db	449	lcp_options *go = &lcp_gotoptions[unit];
donatien	0:b802fc31f1db	450	#if PAP_SUPPORT \|\| CHAP_SUPPORT
donatien	0:b802fc31f1db	451	lcp_options *ho = &lcp_hisoptions[unit];
donatien	0:b802fc31f1db	452	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	453
donatien	0:b802fc31f1db	454	AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
donatien	0:b802fc31f1db	455	/*
donatien	0:b802fc31f1db	456	* Tell higher-level protocols that LCP is up.
donatien	0:b802fc31f1db	457	*/
donatien	0:b802fc31f1db	458	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
donatien	0:b802fc31f1db	459	if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
donatien	0:b802fc31f1db	460	(*protp->lowerup)(unit);
donatien	0:b802fc31f1db	461	}
donatien	0:b802fc31f1db	462	}
donatien	0:b802fc31f1db	463	if (ppp_settings.auth_required && !(go->neg_chap \|\| go->neg_upap)) {
donatien	0:b802fc31f1db	464	/*
donatien	0:b802fc31f1db	465	* We wanted the peer to authenticate itself, and it refused:
donatien	0:b802fc31f1db	466	* treat it as though it authenticated with PAP using a username
donatien	0:b802fc31f1db	467	* of "" and a password of "". If that's not OK, boot it out.
donatien	0:b802fc31f1db	468	*/
donatien	0:b802fc31f1db	469	if (!wo->neg_upap \|\| !null_login(unit)) {
donatien	0:b802fc31f1db	470	AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
donatien	0:b802fc31f1db	471	lcp_close(unit, "peer refused to authenticate");
donatien	0:b802fc31f1db	472	return;
donatien	0:b802fc31f1db	473	}
donatien	0:b802fc31f1db	474	}
donatien	0:b802fc31f1db	475
donatien	0:b802fc31f1db	476	lcp_phase[unit] = PHASE_AUTHENTICATE;
donatien	0:b802fc31f1db	477	auth = 0;
donatien	0:b802fc31f1db	478	#if CHAP_SUPPORT
donatien	0:b802fc31f1db	479	if (go->neg_chap) {
donatien	0:b802fc31f1db	480	ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
donatien	0:b802fc31f1db	481	auth \|= CHAP_PEER;
donatien	0:b802fc31f1db	482	}
donatien	0:b802fc31f1db	483	#endif /* CHAP_SUPPORT */
donatien	0:b802fc31f1db	484	#if PAP_SUPPORT && CHAP_SUPPORT
donatien	0:b802fc31f1db	485	else
donatien	0:b802fc31f1db	486	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
donatien	0:b802fc31f1db	487	#if PAP_SUPPORT
donatien	0:b802fc31f1db	488	if (go->neg_upap) {
donatien	0:b802fc31f1db	489	upap_authpeer(unit);
donatien	0:b802fc31f1db	490	auth \|= PAP_PEER;
donatien	0:b802fc31f1db	491	}
donatien	0:b802fc31f1db	492	#endif /* PAP_SUPPORT */
donatien	0:b802fc31f1db	493	#if CHAP_SUPPORT
donatien	0:b802fc31f1db	494	if (ho->neg_chap) {
donatien	0:b802fc31f1db	495	ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
donatien	0:b802fc31f1db	496	auth \|= CHAP_WITHPEER;
donatien	0:b802fc31f1db	497	}
donatien	0:b802fc31f1db	498	#endif /* CHAP_SUPPORT */
donatien	0:b802fc31f1db	499	#if PAP_SUPPORT && CHAP_SUPPORT
donatien	0:b802fc31f1db	500	else
donatien	0:b802fc31f1db	501	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
donatien	0:b802fc31f1db	502	#if PAP_SUPPORT
donatien	0:b802fc31f1db	503	if (ho->neg_upap) {
donatien	0:b802fc31f1db	504	if (ppp_settings.passwd[0] == 0) {
donatien	0:b802fc31f1db	505	passwd_from_file = 1;
donatien	0:b802fc31f1db	506	if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
donatien	0:b802fc31f1db	507	AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
donatien	0:b802fc31f1db	508	}
donatien	0:b802fc31f1db	509	}
donatien	0:b802fc31f1db	510	upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
donatien	0:b802fc31f1db	511	auth \|= PAP_WITHPEER;
donatien	0:b802fc31f1db	512	}
donatien	0:b802fc31f1db	513	#endif /* PAP_SUPPORT */
donatien	0:b802fc31f1db	514	auth_pending[unit] = auth;
donatien	0:b802fc31f1db	515
donatien	0:b802fc31f1db	516	if (!auth) {
donatien	0:b802fc31f1db	517	network_phase(unit);
donatien	0:b802fc31f1db	518	}
donatien	0:b802fc31f1db	519	}
donatien	0:b802fc31f1db	520
donatien	0:b802fc31f1db	521	/*
donatien	0:b802fc31f1db	522	* Proceed to the network phase.
donatien	0:b802fc31f1db	523	*/
donatien	0:b802fc31f1db	524	static void
donatien	0:b802fc31f1db	525	network_phase(int unit)
donatien	0:b802fc31f1db	526	{
donatien	0:b802fc31f1db	527	int i;
donatien	0:b802fc31f1db	528	struct protent *protp;
donatien	0:b802fc31f1db	529	lcp_options *go = &lcp_gotoptions[unit];
donatien	0:b802fc31f1db	530
donatien	0:b802fc31f1db	531	/*
donatien	0:b802fc31f1db	532	* If the peer had to authenticate, run the auth-up script now.
donatien	0:b802fc31f1db	533	*/
donatien	0:b802fc31f1db	534	if ((go->neg_chap \|\| go->neg_upap) && !did_authup) {
donatien	0:b802fc31f1db	535	/* XXX Do setup for peer authentication. */
donatien	0:b802fc31f1db	536	did_authup = 1;
donatien	0:b802fc31f1db	537	}
donatien	0:b802fc31f1db	538
donatien	0:b802fc31f1db	539	#if CBCP_SUPPORT
donatien	0:b802fc31f1db	540	/*
donatien	0:b802fc31f1db	541	* If we negotiated callback, do it now.
donatien	0:b802fc31f1db	542	*/
donatien	0:b802fc31f1db	543	if (go->neg_cbcp) {
donatien	0:b802fc31f1db	544	lcp_phase[unit] = PHASE_CALLBACK;
donatien	0:b802fc31f1db	545	(*cbcp_protent.open)(unit);
donatien	0:b802fc31f1db	546	return;
donatien	0:b802fc31f1db	547	}
donatien	0:b802fc31f1db	548	#endif /* CBCP_SUPPORT */
donatien	0:b802fc31f1db	549
donatien	0:b802fc31f1db	550	lcp_phase[unit] = PHASE_NETWORK;
donatien	0:b802fc31f1db	551	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
donatien	0:b802fc31f1db	552	if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
donatien	0:b802fc31f1db	553	(*protp->open)(unit);
donatien	0:b802fc31f1db	554	if (protp->protocol != PPP_CCP) {
donatien	0:b802fc31f1db	555	++num_np_open;
donatien	0:b802fc31f1db	556	}
donatien	0:b802fc31f1db	557	}
donatien	0:b802fc31f1db	558	}
donatien	0:b802fc31f1db	559
donatien	0:b802fc31f1db	560	if (num_np_open == 0) {
donatien	0:b802fc31f1db	561	/* nothing to do */
donatien	0:b802fc31f1db	562	lcp_close(0, "No network protocols running");
donatien	0:b802fc31f1db	563	}
donatien	0:b802fc31f1db	564	}
donatien	0:b802fc31f1db	565	/* @todo: add void start_networks(void) here (pppd 2.3.11) */
donatien	0:b802fc31f1db	566
donatien	0:b802fc31f1db	567	/*
donatien	0:b802fc31f1db	568	* The peer has failed to authenticate himself using `protocol'.
donatien	0:b802fc31f1db	569	*/
donatien	0:b802fc31f1db	570	void
donatien	0:b802fc31f1db	571	auth_peer_fail(int unit, u16_t protocol)
donatien	0:b802fc31f1db	572	{
donatien	0:b802fc31f1db	573	LWIP_UNUSED_ARG(protocol);
donatien	0:b802fc31f1db	574
donatien	0:b802fc31f1db	575	AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
donatien	0:b802fc31f1db	576	/*
donatien	0:b802fc31f1db	577	* Authentication failure: take the link down
donatien	0:b802fc31f1db	578	*/
donatien	0:b802fc31f1db	579	lcp_close(unit, "Authentication failed");
donatien	0:b802fc31f1db	580	}
donatien	0:b802fc31f1db	581
donatien	0:b802fc31f1db	582
donatien	0:b802fc31f1db	583	#if PAP_SUPPORT \|\| CHAP_SUPPORT
donatien	0:b802fc31f1db	584	/*
donatien	0:b802fc31f1db	585	* The peer has been successfully authenticated using `protocol'.
donatien	0:b802fc31f1db	586	*/
donatien	0:b802fc31f1db	587	void
donatien	0:b802fc31f1db	588	auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
donatien	0:b802fc31f1db	589	{
donatien	0:b802fc31f1db	590	int pbit;
donatien	0:b802fc31f1db	591
donatien	0:b802fc31f1db	592	AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
donatien	0:b802fc31f1db	593	switch (protocol) {
donatien	0:b802fc31f1db	594	case PPP_CHAP:
donatien	0:b802fc31f1db	595	pbit = CHAP_PEER;
donatien	0:b802fc31f1db	596	break;
donatien	0:b802fc31f1db	597	case PPP_PAP:
donatien	0:b802fc31f1db	598	pbit = PAP_PEER;
donatien	0:b802fc31f1db	599	break;
donatien	0:b802fc31f1db	600	default:
donatien	0:b802fc31f1db	601	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
donatien	0:b802fc31f1db	602	return;
donatien	0:b802fc31f1db	603	}
donatien	0:b802fc31f1db	604
donatien	0:b802fc31f1db	605	/*
donatien	0:b802fc31f1db	606	* Save the authenticated name of the peer for later.
donatien	0:b802fc31f1db	607	*/
donatien	0:b802fc31f1db	608	if (namelen > (int)sizeof(peer_authname) - 1) {
donatien	0:b802fc31f1db	609	namelen = sizeof(peer_authname) - 1;
donatien	0:b802fc31f1db	610	}
donatien	0:b802fc31f1db	611	BCOPY(name, peer_authname, namelen);
donatien	0:b802fc31f1db	612	peer_authname[namelen] = 0;
donatien	0:b802fc31f1db	613
donatien	0:b802fc31f1db	614	/*
donatien	0:b802fc31f1db	615	* If there is no more authentication still to be done,
donatien	0:b802fc31f1db	616	* proceed to the network (or callback) phase.
donatien	0:b802fc31f1db	617	*/
donatien	0:b802fc31f1db	618	if ((auth_pending[unit] &= ~pbit) == 0) {
donatien	0:b802fc31f1db	619	network_phase(unit);
donatien	0:b802fc31f1db	620	}
donatien	0:b802fc31f1db	621	}
donatien	0:b802fc31f1db	622
donatien	0:b802fc31f1db	623	/*
donatien	0:b802fc31f1db	624	* We have failed to authenticate ourselves to the peer using `protocol'.
donatien	0:b802fc31f1db	625	*/
donatien	0:b802fc31f1db	626	void
donatien	0:b802fc31f1db	627	auth_withpeer_fail(int unit, u16_t protocol)
donatien	0:b802fc31f1db	628	{
donatien	0:b802fc31f1db	629	int errCode = PPPERR_AUTHFAIL;
donatien	0:b802fc31f1db	630
donatien	0:b802fc31f1db	631	LWIP_UNUSED_ARG(protocol);
donatien	0:b802fc31f1db	632
donatien	0:b802fc31f1db	633	AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
donatien	0:b802fc31f1db	634	if (passwd_from_file) {
donatien	0:b802fc31f1db	635	BZERO(ppp_settings.passwd, MAXSECRETLEN);
donatien	0:b802fc31f1db	636	}
donatien	0:b802fc31f1db	637
donatien	0:b802fc31f1db	638	/*
donatien	0:b802fc31f1db	639	* We've failed to authenticate ourselves to our peer.
donatien	0:b802fc31f1db	640	* He'll probably take the link down, and there's not much
donatien	0:b802fc31f1db	641	* we can do except wait for that.
donatien	0:b802fc31f1db	642	*/
donatien	0:b802fc31f1db	643	pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
donatien	0:b802fc31f1db	644	lcp_close(unit, "Failed to authenticate ourselves to peer");
donatien	0:b802fc31f1db	645	}
donatien	0:b802fc31f1db	646
donatien	0:b802fc31f1db	647	/*
donatien	0:b802fc31f1db	648	* We have successfully authenticated ourselves with the peer using `protocol'.
donatien	0:b802fc31f1db	649	*/
donatien	0:b802fc31f1db	650	void
donatien	0:b802fc31f1db	651	auth_withpeer_success(int unit, u16_t protocol)
donatien	0:b802fc31f1db	652	{
donatien	0:b802fc31f1db	653	int pbit;
donatien	0:b802fc31f1db	654
donatien	0:b802fc31f1db	655	AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
donatien	0:b802fc31f1db	656	switch (protocol) {
donatien	0:b802fc31f1db	657	case PPP_CHAP:
donatien	0:b802fc31f1db	658	pbit = CHAP_WITHPEER;
donatien	0:b802fc31f1db	659	break;
donatien	0:b802fc31f1db	660	case PPP_PAP:
donatien	0:b802fc31f1db	661	if (passwd_from_file) {
donatien	0:b802fc31f1db	662	BZERO(ppp_settings.passwd, MAXSECRETLEN);
donatien	0:b802fc31f1db	663	}
donatien	0:b802fc31f1db	664	pbit = PAP_WITHPEER;
donatien	0:b802fc31f1db	665	break;
donatien	0:b802fc31f1db	666	default:
donatien	0:b802fc31f1db	667	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
donatien	0:b802fc31f1db	668	pbit = 0;
donatien	0:b802fc31f1db	669	}
donatien	0:b802fc31f1db	670
donatien	0:b802fc31f1db	671	/*
donatien	0:b802fc31f1db	672	* If there is no more authentication still being done,
donatien	0:b802fc31f1db	673	* proceed to the network (or callback) phase.
donatien	0:b802fc31f1db	674	*/
donatien	0:b802fc31f1db	675	if ((auth_pending[unit] &= ~pbit) == 0) {
donatien	0:b802fc31f1db	676	network_phase(unit);
donatien	0:b802fc31f1db	677	}
donatien	0:b802fc31f1db	678	}
donatien	0:b802fc31f1db	679	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	680
donatien	0:b802fc31f1db	681
donatien	0:b802fc31f1db	682	/*
donatien	0:b802fc31f1db	683	* np_up - a network protocol has come up.
donatien	0:b802fc31f1db	684	*/
donatien	0:b802fc31f1db	685	void
donatien	0:b802fc31f1db	686	np_up(int unit, u16_t proto)
donatien	0:b802fc31f1db	687	{
donatien	0:b802fc31f1db	688	LWIP_UNUSED_ARG(unit);
donatien	0:b802fc31f1db	689	LWIP_UNUSED_ARG(proto);
donatien	0:b802fc31f1db	690
donatien	0:b802fc31f1db	691	AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
donatien	0:b802fc31f1db	692	if (num_np_up == 0) {
donatien	0:b802fc31f1db	693	AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
donatien	0:b802fc31f1db	694	/*
donatien	0:b802fc31f1db	695	* At this point we consider that the link has come up successfully.
donatien	0:b802fc31f1db	696	*/
donatien	0:b802fc31f1db	697	if (ppp_settings.idle_time_limit > 0) {
donatien	0:b802fc31f1db	698	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
donatien	0:b802fc31f1db	699	}
donatien	0:b802fc31f1db	700
donatien	0:b802fc31f1db	701	/*
donatien	0:b802fc31f1db	702	* Set a timeout to close the connection once the maximum
donatien	0:b802fc31f1db	703	* connect time has expired.
donatien	0:b802fc31f1db	704	*/
donatien	0:b802fc31f1db	705	if (ppp_settings.maxconnect > 0) {
donatien	0:b802fc31f1db	706	TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
donatien	0:b802fc31f1db	707	}
donatien	0:b802fc31f1db	708	}
donatien	0:b802fc31f1db	709	++num_np_up;
donatien	0:b802fc31f1db	710	}
donatien	0:b802fc31f1db	711
donatien	0:b802fc31f1db	712	/*
donatien	0:b802fc31f1db	713	* np_down - a network protocol has gone down.
donatien	0:b802fc31f1db	714	*/
donatien	0:b802fc31f1db	715	void
donatien	0:b802fc31f1db	716	np_down(int unit, u16_t proto)
donatien	0:b802fc31f1db	717	{
donatien	0:b802fc31f1db	718	LWIP_UNUSED_ARG(unit);
donatien	0:b802fc31f1db	719	LWIP_UNUSED_ARG(proto);
donatien	0:b802fc31f1db	720
donatien	0:b802fc31f1db	721	AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
donatien	0:b802fc31f1db	722	if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
donatien	0:b802fc31f1db	723	UNTIMEOUT(check_idle, NULL);
donatien	0:b802fc31f1db	724	}
donatien	0:b802fc31f1db	725	}
donatien	0:b802fc31f1db	726
donatien	0:b802fc31f1db	727	/*
donatien	0:b802fc31f1db	728	* np_finished - a network protocol has finished using the link.
donatien	0:b802fc31f1db	729	*/
donatien	0:b802fc31f1db	730	void
donatien	0:b802fc31f1db	731	np_finished(int unit, u16_t proto)
donatien	0:b802fc31f1db	732	{
donatien	0:b802fc31f1db	733	LWIP_UNUSED_ARG(unit);
donatien	0:b802fc31f1db	734	LWIP_UNUSED_ARG(proto);
donatien	0:b802fc31f1db	735
donatien	0:b802fc31f1db	736	AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
donatien	0:b802fc31f1db	737	if (--num_np_open <= 0) {
donatien	0:b802fc31f1db	738	/* no further use for the link: shut up shop. */
donatien	0:b802fc31f1db	739	lcp_close(0, "No network protocols running");
donatien	0:b802fc31f1db	740	}
donatien	0:b802fc31f1db	741	}
donatien	0:b802fc31f1db	742
donatien	0:b802fc31f1db	743	/*
donatien	0:b802fc31f1db	744	* check_idle - check whether the link has been idle for long
donatien	0:b802fc31f1db	745	* enough that we can shut it down.
donatien	0:b802fc31f1db	746	*/
donatien	0:b802fc31f1db	747	static void
donatien	0:b802fc31f1db	748	check_idle(void *arg)
donatien	0:b802fc31f1db	749	{
donatien	0:b802fc31f1db	750	struct ppp_idle idle;
donatien	0:b802fc31f1db	751	u_short itime;
donatien	0:b802fc31f1db	752
donatien	0:b802fc31f1db	753	LWIP_UNUSED_ARG(arg);
donatien	0:b802fc31f1db	754	if (!get_idle_time(0, &idle)) {
donatien	0:b802fc31f1db	755	return;
donatien	0:b802fc31f1db	756	}
donatien	0:b802fc31f1db	757	itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
donatien	0:b802fc31f1db	758	if (itime >= ppp_settings.idle_time_limit) {
donatien	0:b802fc31f1db	759	/* link is idle: shut it down. */
donatien	0:b802fc31f1db	760	AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
donatien	0:b802fc31f1db	761	lcp_close(0, "Link inactive");
donatien	0:b802fc31f1db	762	} else {
donatien	0:b802fc31f1db	763	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
donatien	0:b802fc31f1db	764	}
donatien	0:b802fc31f1db	765	}
donatien	0:b802fc31f1db	766
donatien	0:b802fc31f1db	767	/*
donatien	0:b802fc31f1db	768	* connect_time_expired - log a message and close the connection.
donatien	0:b802fc31f1db	769	*/
donatien	0:b802fc31f1db	770	static void
donatien	0:b802fc31f1db	771	connect_time_expired(void *arg)
donatien	0:b802fc31f1db	772	{
donatien	0:b802fc31f1db	773	LWIP_UNUSED_ARG(arg);
donatien	0:b802fc31f1db	774
donatien	0:b802fc31f1db	775	AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
donatien	0:b802fc31f1db	776	lcp_close(0, "Connect time expired"); /* Close connection */
donatien	0:b802fc31f1db	777	}
donatien	0:b802fc31f1db	778
donatien	0:b802fc31f1db	779	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	780	/*
donatien	0:b802fc31f1db	781	* auth_check_options - called to check authentication options.
donatien	0:b802fc31f1db	782	*/
donatien	0:b802fc31f1db	783	void
donatien	0:b802fc31f1db	784	auth_check_options(void)
donatien	0:b802fc31f1db	785	{
donatien	0:b802fc31f1db	786	lcp_options *wo = &lcp_wantoptions[0];
donatien	0:b802fc31f1db	787	int can_auth;
donatien	0:b802fc31f1db	788	ipcp_options *ipwo = &ipcp_wantoptions[0];
donatien	0:b802fc31f1db	789	u32_t remote;
donatien	0:b802fc31f1db	790
donatien	0:b802fc31f1db	791	/* Default our_name to hostname, and user to our_name */
donatien	0:b802fc31f1db	792	if (ppp_settings.our_name[0] == 0 \|\| ppp_settings.usehostname) {
donatien	0:b802fc31f1db	793	strcpy(ppp_settings.our_name, ppp_settings.hostname);
donatien	0:b802fc31f1db	794	}
donatien	0:b802fc31f1db	795
donatien	0:b802fc31f1db	796	if (ppp_settings.user[0] == 0) {
donatien	0:b802fc31f1db	797	strcpy(ppp_settings.user, ppp_settings.our_name);
donatien	0:b802fc31f1db	798	}
donatien	0:b802fc31f1db	799
donatien	0:b802fc31f1db	800	/* If authentication is required, ask peer for CHAP or PAP. */
donatien	0:b802fc31f1db	801	if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
donatien	0:b802fc31f1db	802	wo->neg_chap = 1;
donatien	0:b802fc31f1db	803	wo->neg_upap = 1;
donatien	0:b802fc31f1db	804	}
donatien	0:b802fc31f1db	805
donatien	0:b802fc31f1db	806	/*
donatien	0:b802fc31f1db	807	* Check whether we have appropriate secrets to use
donatien	0:b802fc31f1db	808	* to authenticate the peer.
donatien	0:b802fc31f1db	809	*/
donatien	0:b802fc31f1db	810	can_auth = wo->neg_upap && have_pap_secret();
donatien	0:b802fc31f1db	811	if (!can_auth && wo->neg_chap) {
donatien	0:b802fc31f1db	812	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
donatien	0:b802fc31f1db	813	can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
donatien	0:b802fc31f1db	814	}
donatien	0:b802fc31f1db	815
donatien	0:b802fc31f1db	816	if (ppp_settings.auth_required && !can_auth) {
donatien	0:b802fc31f1db	817	ppp_panic("No auth secret");
donatien	0:b802fc31f1db	818	}
donatien	0:b802fc31f1db	819	}
donatien	0:b802fc31f1db	820	#endif /* UNUSED */
donatien	0:b802fc31f1db	821
donatien	0:b802fc31f1db	822	/*
donatien	0:b802fc31f1db	823	* auth_reset - called when LCP is starting negotiations to recheck
donatien	0:b802fc31f1db	824	* authentication options, i.e. whether we have appropriate secrets
donatien	0:b802fc31f1db	825	* to use for authenticating ourselves and/or the peer.
donatien	0:b802fc31f1db	826	*/
donatien	0:b802fc31f1db	827	void
donatien	0:b802fc31f1db	828	auth_reset(int unit)
donatien	0:b802fc31f1db	829	{
donatien	0:b802fc31f1db	830	lcp_options *go = &lcp_gotoptions[unit];
donatien	0:b802fc31f1db	831	lcp_options *ao = &lcp_allowoptions[0];
donatien	0:b802fc31f1db	832	ipcp_options *ipwo = &ipcp_wantoptions[0];
donatien	0:b802fc31f1db	833	u32_t remote;
donatien	0:b802fc31f1db	834
donatien	0:b802fc31f1db	835	AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
donatien	0:b802fc31f1db	836	ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 \|\| get_pap_passwd(unit, NULL, NULL));
donatien	0:b802fc31f1db	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)/;
donatien	0:b802fc31f1db	838
donatien	0:b802fc31f1db	839	if (go->neg_upap && !have_pap_secret()) {
donatien	0:b802fc31f1db	840	go->neg_upap = 0;
donatien	0:b802fc31f1db	841	}
donatien	0:b802fc31f1db	842	if (go->neg_chap) {
donatien	0:b802fc31f1db	843	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
donatien	0:b802fc31f1db	844	if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
donatien	0:b802fc31f1db	845	go->neg_chap = 0;
donatien	0:b802fc31f1db	846	}
donatien	0:b802fc31f1db	847	}
donatien	0:b802fc31f1db	848	}
donatien	0:b802fc31f1db	849
donatien	0:b802fc31f1db	850	#if PAP_SUPPORT
donatien	0:b802fc31f1db	851	/*
donatien	0:b802fc31f1db	852	* check_passwd - Check the user name and passwd against the PAP secrets
donatien	0:b802fc31f1db	853	* file. If requested, also check against the system password database,
donatien	0:b802fc31f1db	854	* and login the user if OK.
donatien	0:b802fc31f1db	855	*
donatien	0:b802fc31f1db	856	* returns:
donatien	0:b802fc31f1db	857	* UPAP_AUTHNAK: Authentication failed.
donatien	0:b802fc31f1db	858	* UPAP_AUTHACK: Authentication succeeded.
donatien	0:b802fc31f1db	859	* In either case, msg points to an appropriate message.
donatien	0:b802fc31f1db	860	*/
donatien	0:b802fc31f1db	861	u_char
donatien	0:b802fc31f1db	862	check_passwd( int unit, char auser, int userlen, char apasswd, int passwdlen, char *msg, int msglen)
donatien	0:b802fc31f1db	863	{
donatien	0:b802fc31f1db	864	#if 1 /* XXX Assume all entries OK. */
donatien	0:b802fc31f1db	865	LWIP_UNUSED_ARG(unit);
donatien	0:b802fc31f1db	866	LWIP_UNUSED_ARG(auser);
donatien	0:b802fc31f1db	867	LWIP_UNUSED_ARG(userlen);
donatien	0:b802fc31f1db	868	LWIP_UNUSED_ARG(apasswd);
donatien	0:b802fc31f1db	869	LWIP_UNUSED_ARG(passwdlen);
donatien	0:b802fc31f1db	870	LWIP_UNUSED_ARG(msglen);
donatien	0:b802fc31f1db	871	msg = (char ) 0;
donatien	0:b802fc31f1db	872	return UPAP_AUTHACK; /* XXX Assume all entries OK. */
donatien	0:b802fc31f1db	873	#else
donatien	0:b802fc31f1db	874	u_char ret = 0;
donatien	0:b802fc31f1db	875	struct wordlist *addrs = NULL;
donatien	0:b802fc31f1db	876	char passwd[256], user[256];
donatien	0:b802fc31f1db	877	char secret[MAXWORDLEN];
donatien	0:b802fc31f1db	878	static u_short attempts = 0;
donatien	0:b802fc31f1db	879
donatien	0:b802fc31f1db	880	/*
donatien	0:b802fc31f1db	881	* Make copies of apasswd and auser, then null-terminate them.
donatien	0:b802fc31f1db	882	*/
donatien	0:b802fc31f1db	883	BCOPY(apasswd, passwd, passwdlen);
donatien	0:b802fc31f1db	884	passwd[passwdlen] = '\0';
donatien	0:b802fc31f1db	885	BCOPY(auser, user, userlen);
donatien	0:b802fc31f1db	886	user[userlen] = '\0';
donatien	0:b802fc31f1db	887	msg = (char ) 0;
donatien	0:b802fc31f1db	888
donatien	0:b802fc31f1db	889	/* XXX Validate user name and password. */
donatien	0:b802fc31f1db	890	ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
donatien	0:b802fc31f1db	891
donatien	0:b802fc31f1db	892	if (ret == UPAP_AUTHNAK) {
donatien	0:b802fc31f1db	893	if (msg == (char ) 0) {
donatien	0:b802fc31f1db	894	*msg = "Login incorrect";
donatien	0:b802fc31f1db	895	}
donatien	0:b802fc31f1db	896	msglen = strlen(msg);
donatien	0:b802fc31f1db	897	/*
donatien	0:b802fc31f1db	898	* Frustrate passwd stealer programs.
donatien	0:b802fc31f1db	899	* Allow 10 tries, but start backing off after 3 (stolen from login).
donatien	0:b802fc31f1db	900	* On 10'th, drop the connection.
donatien	0:b802fc31f1db	901	*/
donatien	0:b802fc31f1db	902	if (attempts++ >= 10) {
donatien	0:b802fc31f1db	903	AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
donatien	0:b802fc31f1db	904	/ppp_panic("Excess Bad Logins");/
donatien	0:b802fc31f1db	905	}
donatien	0:b802fc31f1db	906	if (attempts > 3) {
donatien	0:b802fc31f1db	907	/* @todo: this was sleep(), i.e. seconds, not milliseconds
donatien	0:b802fc31f1db	908	* I don't think we really need this in lwIP - we would block tcpip_thread!
donatien	0:b802fc31f1db	909	*/
donatien	0:b802fc31f1db	910	/sys_msleep((attempts - 3) 5);*/
donatien	0:b802fc31f1db	911	}
donatien	0:b802fc31f1db	912	if (addrs != NULL) {
donatien	0:b802fc31f1db	913	free_wordlist(addrs);
donatien	0:b802fc31f1db	914	}
donatien	0:b802fc31f1db	915	} else {
donatien	0:b802fc31f1db	916	attempts = 0; /* Reset count */
donatien	0:b802fc31f1db	917	if (msg == (char ) 0) {
donatien	0:b802fc31f1db	918	*msg = "Login ok";
donatien	0:b802fc31f1db	919	}
donatien	0:b802fc31f1db	920	msglen = strlen(msg);
donatien	0:b802fc31f1db	921	set_allowed_addrs(unit, addrs);
donatien	0:b802fc31f1db	922	}
donatien	0:b802fc31f1db	923
donatien	0:b802fc31f1db	924	BZERO(passwd, sizeof(passwd));
donatien	0:b802fc31f1db	925	BZERO(secret, sizeof(secret));
donatien	0:b802fc31f1db	926
donatien	0:b802fc31f1db	927	return ret;
donatien	0:b802fc31f1db	928	#endif
donatien	0:b802fc31f1db	929	}
donatien	0:b802fc31f1db	930	#endif /* PAP_SUPPORT */
donatien	0:b802fc31f1db	931
donatien	0:b802fc31f1db	932	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	933	/*
donatien	0:b802fc31f1db	934	* This function is needed for PAM.
donatien	0:b802fc31f1db	935	*/
donatien	0:b802fc31f1db	936
donatien	0:b802fc31f1db	937	#ifdef USE_PAM
donatien	0:b802fc31f1db	938
donatien	0:b802fc31f1db	939	/* lwip does not support PAM*/
donatien	0:b802fc31f1db	940
donatien	0:b802fc31f1db	941	#endif /* USE_PAM */
donatien	0:b802fc31f1db	942
donatien	0:b802fc31f1db	943	#endif /* UNUSED */
donatien	0:b802fc31f1db	944
donatien	0:b802fc31f1db	945
donatien	0:b802fc31f1db	946	#if 0 /* UNUSED */
donatien	0:b802fc31f1db	947	/*
donatien	0:b802fc31f1db	948	* plogin - Check the user name and password against the system
donatien	0:b802fc31f1db	949	* password database, and login the user if OK.
donatien	0:b802fc31f1db	950	*
donatien	0:b802fc31f1db	951	* returns:
donatien	0:b802fc31f1db	952	* UPAP_AUTHNAK: Login failed.
donatien	0:b802fc31f1db	953	* UPAP_AUTHACK: Login succeeded.
donatien	0:b802fc31f1db	954	* In either case, msg points to an appropriate message.
donatien	0:b802fc31f1db	955	*/
donatien	0:b802fc31f1db	956	static int
donatien	0:b802fc31f1db	957	plogin(char user, char passwd, char *msg, int msglen)
donatien	0:b802fc31f1db	958	{
donatien	0:b802fc31f1db	959
donatien	0:b802fc31f1db	960	LWIP_UNUSED_ARG(user);
donatien	0:b802fc31f1db	961	LWIP_UNUSED_ARG(passwd);
donatien	0:b802fc31f1db	962	LWIP_UNUSED_ARG(msg);
donatien	0:b802fc31f1db	963	LWIP_UNUSED_ARG(msglen);
donatien	0:b802fc31f1db	964
donatien	0:b802fc31f1db	965
donatien	0:b802fc31f1db	966	/* The new lines are here align the file when
donatien	0:b802fc31f1db	967	* compared against the pppd 2.3.11 code */
donatien	0:b802fc31f1db	968
donatien	0:b802fc31f1db	969
donatien	0:b802fc31f1db	970
donatien	0:b802fc31f1db	971
donatien	0:b802fc31f1db	972
donatien	0:b802fc31f1db	973
donatien	0:b802fc31f1db	974
donatien	0:b802fc31f1db	975
donatien	0:b802fc31f1db	976
donatien	0:b802fc31f1db	977
donatien	0:b802fc31f1db	978
donatien	0:b802fc31f1db	979
donatien	0:b802fc31f1db	980
donatien	0:b802fc31f1db	981
donatien	0:b802fc31f1db	982
donatien	0:b802fc31f1db	983
donatien	0:b802fc31f1db	984	/* XXX Fail until we decide that we want to support logins. */
donatien	0:b802fc31f1db	985	return (UPAP_AUTHNAK);
donatien	0:b802fc31f1db	986	}
donatien	0:b802fc31f1db	987	#endif
donatien	0:b802fc31f1db	988
donatien	0:b802fc31f1db	989
donatien	0:b802fc31f1db	990
donatien	0:b802fc31f1db	991	/*
donatien	0:b802fc31f1db	992	* plogout - Logout the user.
donatien	0:b802fc31f1db	993	*/
donatien	0:b802fc31f1db	994	static void
donatien	0:b802fc31f1db	995	plogout(void)
donatien	0:b802fc31f1db	996	{
donatien	0:b802fc31f1db	997	logged_in = 0;
donatien	0:b802fc31f1db	998	}
donatien	0:b802fc31f1db	999
donatien	0:b802fc31f1db	1000	/*
donatien	0:b802fc31f1db	1001	* null_login - Check if a username of "" and a password of "" are
donatien	0:b802fc31f1db	1002	* acceptable, and iff so, set the list of acceptable IP addresses
donatien	0:b802fc31f1db	1003	* and return 1.
donatien	0:b802fc31f1db	1004	*/
donatien	0:b802fc31f1db	1005	static int
donatien	0:b802fc31f1db	1006	null_login(int unit)
donatien	0:b802fc31f1db	1007	{
donatien	0:b802fc31f1db	1008	LWIP_UNUSED_ARG(unit);
donatien	0:b802fc31f1db	1009	/* XXX Fail until we decide that we want to support logins. */
donatien	0:b802fc31f1db	1010	return 0;
donatien	0:b802fc31f1db	1011	}
donatien	0:b802fc31f1db	1012
donatien	0:b802fc31f1db	1013
donatien	0:b802fc31f1db	1014	/*
donatien	0:b802fc31f1db	1015	* get_pap_passwd - get a password for authenticating ourselves with
donatien	0:b802fc31f1db	1016	* our peer using PAP. Returns 1 on success, 0 if no suitable password
donatien	0:b802fc31f1db	1017	* could be found.
donatien	0:b802fc31f1db	1018	*/
donatien	0:b802fc31f1db	1019	static int
donatien	0:b802fc31f1db	1020	get_pap_passwd(int unit, char user, char passwd)
donatien	0:b802fc31f1db	1021	{
donatien	0:b802fc31f1db	1022	LWIP_UNUSED_ARG(unit);
donatien	0:b802fc31f1db	1023	/* normally we would reject PAP if no password is provided,
donatien	0:b802fc31f1db	1024	but this causes problems with some providers (like CHT in Taiwan)
donatien	0:b802fc31f1db	1025	who incorrectly request PAP and expect a bogus/empty password, so
donatien	0:b802fc31f1db	1026	always provide a default user/passwd of "none"/"none"
donatien	0:b802fc31f1db	1027
donatien	0:b802fc31f1db	1028	@todo: This should be configured by the user, instead of being hardcoded here!
donatien	0:b802fc31f1db	1029	*/
donatien	0:b802fc31f1db	1030	if(user) {
donatien	0:b802fc31f1db	1031	strcpy(user, "none");
donatien	0:b802fc31f1db	1032	}
donatien	0:b802fc31f1db	1033	if(passwd) {
donatien	0:b802fc31f1db	1034	strcpy(passwd, "none");
donatien	0:b802fc31f1db	1035	}
donatien	0:b802fc31f1db	1036	return 1;
donatien	0:b802fc31f1db	1037	}
donatien	0:b802fc31f1db	1038
donatien	0:b802fc31f1db	1039	/*
donatien	0:b802fc31f1db	1040	* have_pap_secret - check whether we have a PAP file with any
donatien	0:b802fc31f1db	1041	* secrets that we could possibly use for authenticating the peer.
donatien	0:b802fc31f1db	1042	*/
donatien	0:b802fc31f1db	1043	static int
donatien	0:b802fc31f1db	1044	have_pap_secret(void)
donatien	0:b802fc31f1db	1045	{
donatien	0:b802fc31f1db	1046	/* XXX Fail until we set up our passwords. */
donatien	0:b802fc31f1db	1047	return 0;
donatien	0:b802fc31f1db	1048	}
donatien	0:b802fc31f1db	1049
donatien	0:b802fc31f1db	1050	/*
donatien	0:b802fc31f1db	1051	* have_chap_secret - check whether we have a CHAP file with a
donatien	0:b802fc31f1db	1052	* secret that we could possibly use for authenticating `client'
donatien	0:b802fc31f1db	1053	* on `server'. Either can be the null string, meaning we don't
donatien	0:b802fc31f1db	1054	* know the identity yet.
donatien	0:b802fc31f1db	1055	*/
donatien	0:b802fc31f1db	1056	static int
donatien	0:b802fc31f1db	1057	have_chap_secret(char client, char server, u32_t remote)
donatien	0:b802fc31f1db	1058	{
donatien	0:b802fc31f1db	1059	LWIP_UNUSED_ARG(client);
donatien	0:b802fc31f1db	1060	LWIP_UNUSED_ARG(server);
donatien	0:b802fc31f1db	1061	LWIP_UNUSED_ARG(remote);
donatien	0:b802fc31f1db	1062
donatien	0:b802fc31f1db	1063	/* XXX Fail until we set up our passwords. */
donatien	0:b802fc31f1db	1064	return 0;
donatien	0:b802fc31f1db	1065	}
donatien	0:b802fc31f1db	1066	#if CHAP_SUPPORT
donatien	0:b802fc31f1db	1067
donatien	0:b802fc31f1db	1068	/*
donatien	0:b802fc31f1db	1069	* get_secret - open the CHAP secret file and return the secret
donatien	0:b802fc31f1db	1070	* for authenticating the given client on the given server.
donatien	0:b802fc31f1db	1071	* (We could be either client or server).
donatien	0:b802fc31f1db	1072	*/
donatien	0:b802fc31f1db	1073	int
donatien	0:b802fc31f1db	1074	get_secret(int unit, char client, char server, char secret, int secret_len, int save_addrs)
donatien	0:b802fc31f1db	1075	{
donatien	0:b802fc31f1db	1076	#if 1
donatien	0:b802fc31f1db	1077	int len;
donatien	0:b802fc31f1db	1078	struct wordlist *addrs;
donatien	0:b802fc31f1db	1079
donatien	0:b802fc31f1db	1080	LWIP_UNUSED_ARG(unit);
donatien	0:b802fc31f1db	1081	LWIP_UNUSED_ARG(server);
donatien	0:b802fc31f1db	1082	LWIP_UNUSED_ARG(save_addrs);
donatien	0:b802fc31f1db	1083
donatien	0:b802fc31f1db	1084	addrs = NULL;
donatien	0:b802fc31f1db	1085
donatien	0:b802fc31f1db	1086	if(!client \|\| !client[0] \|\| strcmp(client, ppp_settings.user)) {
donatien	0:b802fc31f1db	1087	return 0;
donatien	0:b802fc31f1db	1088	}
donatien	0:b802fc31f1db	1089
donatien	0:b802fc31f1db	1090	len = (int)strlen(ppp_settings.passwd);
donatien	0:b802fc31f1db	1091	if (len > MAXSECRETLEN) {
donatien	0:b802fc31f1db	1092	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
donatien	0:b802fc31f1db	1093	len = MAXSECRETLEN;
donatien	0:b802fc31f1db	1094	}
donatien	0:b802fc31f1db	1095
donatien	0:b802fc31f1db	1096	BCOPY(ppp_settings.passwd, secret, len);
donatien	0:b802fc31f1db	1097	*secret_len = len;
donatien	0:b802fc31f1db	1098
donatien	0:b802fc31f1db	1099	return 1;
donatien	0:b802fc31f1db	1100	#else
donatien	0:b802fc31f1db	1101	int ret = 0, len;
donatien	0:b802fc31f1db	1102	struct wordlist *addrs;
donatien	0:b802fc31f1db	1103	char secbuf[MAXWORDLEN];
donatien	0:b802fc31f1db	1104
donatien	0:b802fc31f1db	1105	addrs = NULL;
donatien	0:b802fc31f1db	1106	secbuf[0] = 0;
donatien	0:b802fc31f1db	1107
donatien	0:b802fc31f1db	1108	/* XXX Find secret. */
donatien	0:b802fc31f1db	1109	if (ret < 0) {
donatien	0:b802fc31f1db	1110	return 0;
donatien	0:b802fc31f1db	1111	}
donatien	0:b802fc31f1db	1112
donatien	0:b802fc31f1db	1113	if (save_addrs) {
donatien	0:b802fc31f1db	1114	set_allowed_addrs(unit, addrs);
donatien	0:b802fc31f1db	1115	}
donatien	0:b802fc31f1db	1116
donatien	0:b802fc31f1db	1117	len = strlen(secbuf);
donatien	0:b802fc31f1db	1118	if (len > MAXSECRETLEN) {
donatien	0:b802fc31f1db	1119	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
donatien	0:b802fc31f1db	1120	len = MAXSECRETLEN;
donatien	0:b802fc31f1db	1121	}
donatien	0:b802fc31f1db	1122
donatien	0:b802fc31f1db	1123	BCOPY(secbuf, secret, len);
donatien	0:b802fc31f1db	1124	BZERO(secbuf, sizeof(secbuf));
donatien	0:b802fc31f1db	1125	*secret_len = len;
donatien	0:b802fc31f1db	1126
donatien	0:b802fc31f1db	1127	return 1;
donatien	0:b802fc31f1db	1128	#endif
donatien	0:b802fc31f1db	1129	}
donatien	0:b802fc31f1db	1130	#endif /* CHAP_SUPPORT */
donatien	0:b802fc31f1db	1131
donatien	0:b802fc31f1db	1132
donatien	0:b802fc31f1db	1133	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	1134	/*
donatien	0:b802fc31f1db	1135	* set_allowed_addrs() - set the list of allowed addresses.
donatien	0:b802fc31f1db	1136	*/
donatien	0:b802fc31f1db	1137	static void
donatien	0:b802fc31f1db	1138	set_allowed_addrs(int unit, struct wordlist *addrs)
donatien	0:b802fc31f1db	1139	{
donatien	0:b802fc31f1db	1140	if (addresses[unit] != NULL) {
donatien	0:b802fc31f1db	1141	free_wordlist(addresses[unit]);
donatien	0:b802fc31f1db	1142	}
donatien	0:b802fc31f1db	1143	addresses[unit] = addrs;
donatien	0:b802fc31f1db	1144
donatien	0:b802fc31f1db	1145	#if 0
donatien	0:b802fc31f1db	1146	/*
donatien	0:b802fc31f1db	1147	* If there's only one authorized address we might as well
donatien	0:b802fc31f1db	1148	* ask our peer for that one right away
donatien	0:b802fc31f1db	1149	*/
donatien	0:b802fc31f1db	1150	if (addrs != NULL && addrs->next == NULL) {
donatien	0:b802fc31f1db	1151	char *p = addrs->word;
donatien	0:b802fc31f1db	1152	struct ipcp_options *wo = &ipcp_wantoptions[unit];
donatien	0:b802fc31f1db	1153	u32_t a;
donatien	0:b802fc31f1db	1154	struct hostent *hp;
donatien	0:b802fc31f1db	1155
donatien	0:b802fc31f1db	1156	if (wo->hisaddr == 0 && p != '!' && p != '-' && strchr(p, '/') == NULL) {
donatien	0:b802fc31f1db	1157	hp = gethostbyname(p);
donatien	0:b802fc31f1db	1158	if (hp != NULL && hp->h_addrtype == AF_INET) {
donatien	0:b802fc31f1db	1159	a = (u32_t )hp->h_addr;
donatien	0:b802fc31f1db	1160	} else {
donatien	0:b802fc31f1db	1161	a = inet_addr(p);
donatien	0:b802fc31f1db	1162	}
donatien	0:b802fc31f1db	1163	if (a != (u32_t) -1) {
donatien	0:b802fc31f1db	1164	wo->hisaddr = a;
donatien	0:b802fc31f1db	1165	}
donatien	0:b802fc31f1db	1166	}
donatien	0:b802fc31f1db	1167	}
donatien	0:b802fc31f1db	1168	#endif
donatien	0:b802fc31f1db	1169	}
donatien	0:b802fc31f1db	1170	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	1171
donatien	0:b802fc31f1db	1172	/*
donatien	0:b802fc31f1db	1173	* auth_ip_addr - check whether the peer is authorized to use
donatien	0:b802fc31f1db	1174	* a given IP address. Returns 1 if authorized, 0 otherwise.
donatien	0:b802fc31f1db	1175	*/
donatien	0:b802fc31f1db	1176	int
donatien	0:b802fc31f1db	1177	auth_ip_addr(int unit, u32_t addr)
donatien	0:b802fc31f1db	1178	{
donatien	0:b802fc31f1db	1179	return ip_addr_check(addr, addresses[unit]);
donatien	0:b802fc31f1db	1180	}
donatien	0:b802fc31f1db	1181
donatien	0:b802fc31f1db	1182	static int /* @todo: integrate this funtion into auth_ip_addr()*/
donatien	0:b802fc31f1db	1183	ip_addr_check(u32_t addr, struct wordlist *addrs)
donatien	0:b802fc31f1db	1184	{
donatien	0:b802fc31f1db	1185	/* don't allow loopback or multicast address */
donatien	0:b802fc31f1db	1186	if (bad_ip_adrs(addr)) {
donatien	0:b802fc31f1db	1187	return 0;
donatien	0:b802fc31f1db	1188	}
donatien	0:b802fc31f1db	1189
donatien	0:b802fc31f1db	1190	if (addrs == NULL) {
donatien	0:b802fc31f1db	1191	return !ppp_settings.auth_required; /* no addresses authorized */
donatien	0:b802fc31f1db	1192	}
donatien	0:b802fc31f1db	1193
donatien	0:b802fc31f1db	1194	/* XXX All other addresses allowed. */
donatien	0:b802fc31f1db	1195	return 1;
donatien	0:b802fc31f1db	1196	}
donatien	0:b802fc31f1db	1197
donatien	0:b802fc31f1db	1198	/*
donatien	0:b802fc31f1db	1199	* bad_ip_adrs - return 1 if the IP address is one we don't want
donatien	0:b802fc31f1db	1200	* to use, such as an address in the loopback net or a multicast address.
donatien	0:b802fc31f1db	1201	* addr is in network byte order.
donatien	0:b802fc31f1db	1202	*/
donatien	0:b802fc31f1db	1203	int
donatien	0:b802fc31f1db	1204	bad_ip_adrs(u32_t addr)
donatien	0:b802fc31f1db	1205	{
donatien	0:b802fc31f1db	1206	addr = ntohl(addr);
donatien	0:b802fc31f1db	1207	return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
donatien	0:b802fc31f1db	1208	\|\| IN_MULTICAST(addr) \|\| IN_BADCLASS(addr);
donatien	0:b802fc31f1db	1209	}
donatien	0:b802fc31f1db	1210
donatien	0:b802fc31f1db	1211	#if 0 /* UNUSED / / PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	1212	/*
donatien	0:b802fc31f1db	1213	* some_ip_ok - check a wordlist to see if it authorizes any
donatien	0:b802fc31f1db	1214	* IP address(es).
donatien	0:b802fc31f1db	1215	*/
donatien	0:b802fc31f1db	1216	static int
donatien	0:b802fc31f1db	1217	some_ip_ok(struct wordlist *addrs)
donatien	0:b802fc31f1db	1218	{
donatien	0:b802fc31f1db	1219	for (; addrs != 0; addrs = addrs->next) {
donatien	0:b802fc31f1db	1220	if (addrs->word[0] == '-')
donatien	0:b802fc31f1db	1221	break;
donatien	0:b802fc31f1db	1222	if (addrs->word[0] != '!')
donatien	0:b802fc31f1db	1223	return 1; /* some IP address is allowed */
donatien	0:b802fc31f1db	1224	}
donatien	0:b802fc31f1db	1225	return 0;
donatien	0:b802fc31f1db	1226	}
donatien	0:b802fc31f1db	1227
donatien	0:b802fc31f1db	1228	/*
donatien	0:b802fc31f1db	1229	* check_access - complain if a secret file has too-liberal permissions.
donatien	0:b802fc31f1db	1230	*/
donatien	0:b802fc31f1db	1231	static void
donatien	0:b802fc31f1db	1232	check_access(FILE f, char filename)
donatien	0:b802fc31f1db	1233	{
donatien	0:b802fc31f1db	1234	struct stat sbuf;
donatien	0:b802fc31f1db	1235
donatien	0:b802fc31f1db	1236	if (fstat(fileno(f), &sbuf) < 0) {
donatien	0:b802fc31f1db	1237	warn("cannot stat secret file %s: %m", filename);
donatien	0:b802fc31f1db	1238	} else if ((sbuf.st_mode & (S_IRWXG \| S_IRWXO)) != 0) {
donatien	0:b802fc31f1db	1239	warn("Warning - secret file %s has world and/or group access",
donatien	0:b802fc31f1db	1240	filename);
donatien	0:b802fc31f1db	1241	}
donatien	0:b802fc31f1db	1242	}
donatien	0:b802fc31f1db	1243
donatien	0:b802fc31f1db	1244
donatien	0:b802fc31f1db	1245	/*
donatien	0:b802fc31f1db	1246	* scan_authfile - Scan an authorization file for a secret suitable
donatien	0:b802fc31f1db	1247	* for authenticating `client' on `server'. The return value is -1
donatien	0:b802fc31f1db	1248	* if no secret is found, otherwise >= 0. The return value has
donatien	0:b802fc31f1db	1249	* NONWILD_CLIENT set if the secret didn't have "*" for the client, and
donatien	0:b802fc31f1db	1250	* NONWILD_SERVER set if the secret didn't have "*" for the server.
donatien	0:b802fc31f1db	1251	* Any following words on the line up to a "--" (i.e. address authorization
donatien	0:b802fc31f1db	1252	* info) are placed in a wordlist and returned in *addrs. Any
donatien	0:b802fc31f1db	1253	* following words (extra options) are placed in a wordlist and
donatien	0:b802fc31f1db	1254	* returned in *opts.
donatien	0:b802fc31f1db	1255	* We assume secret is NULL or points to MAXWORDLEN bytes of space.
donatien	0:b802fc31f1db	1256	*/
donatien	0:b802fc31f1db	1257	static int
donatien	0:b802fc31f1db	1258	scan_authfile(FILE f, char client, char server, char secret, struct wordlist addrs, struct wordlist opts, char *filename)
donatien	0:b802fc31f1db	1259	{
donatien	0:b802fc31f1db	1260	/* We do not (currently) need this in lwip */
donatien	0:b802fc31f1db	1261	return 0; /* dummy */
donatien	0:b802fc31f1db	1262	}
donatien	0:b802fc31f1db	1263	/*
donatien	0:b802fc31f1db	1264	* free_wordlist - release memory allocated for a wordlist.
donatien	0:b802fc31f1db	1265	*/
donatien	0:b802fc31f1db	1266	static void
donatien	0:b802fc31f1db	1267	free_wordlist(struct wordlist *wp)
donatien	0:b802fc31f1db	1268	{
donatien	0:b802fc31f1db	1269	struct wordlist *next;
donatien	0:b802fc31f1db	1270
donatien	0:b802fc31f1db	1271	while (wp != NULL) {
donatien	0:b802fc31f1db	1272	next = wp->next;
donatien	0:b802fc31f1db	1273	free(wp);
donatien	0:b802fc31f1db	1274	wp = next;
donatien	0:b802fc31f1db	1275	}
donatien	0:b802fc31f1db	1276	}
donatien	0:b802fc31f1db	1277
donatien	0:b802fc31f1db	1278	/*
donatien	0:b802fc31f1db	1279	* auth_script_done - called when the auth-up or auth-down script
donatien	0:b802fc31f1db	1280	* has finished.
donatien	0:b802fc31f1db	1281	*/
donatien	0:b802fc31f1db	1282	static void
donatien	0:b802fc31f1db	1283	auth_script_done(void *arg)
donatien	0:b802fc31f1db	1284	{
donatien	0:b802fc31f1db	1285	auth_script_pid = 0;
donatien	0:b802fc31f1db	1286	switch (auth_script_state) {
donatien	0:b802fc31f1db	1287	case s_up:
donatien	0:b802fc31f1db	1288	if (auth_state == s_down) {
donatien	0:b802fc31f1db	1289	auth_script_state = s_down;
donatien	0:b802fc31f1db	1290	auth_script(_PATH_AUTHDOWN);
donatien	0:b802fc31f1db	1291	}
donatien	0:b802fc31f1db	1292	break;
donatien	0:b802fc31f1db	1293	case s_down:
donatien	0:b802fc31f1db	1294	if (auth_state == s_up) {
donatien	0:b802fc31f1db	1295	auth_script_state = s_up;
donatien	0:b802fc31f1db	1296	auth_script(_PATH_AUTHUP);
donatien	0:b802fc31f1db	1297	}
donatien	0:b802fc31f1db	1298	break;
donatien	0:b802fc31f1db	1299	}
donatien	0:b802fc31f1db	1300	}
donatien	0:b802fc31f1db	1301
donatien	0:b802fc31f1db	1302	/*
donatien	0:b802fc31f1db	1303	* auth_script - execute a script with arguments
donatien	0:b802fc31f1db	1304	* interface-name peer-name real-user tty speed
donatien	0:b802fc31f1db	1305	*/
donatien	0:b802fc31f1db	1306	static void
donatien	0:b802fc31f1db	1307	auth_script(char *script)
donatien	0:b802fc31f1db	1308	{
donatien	0:b802fc31f1db	1309	char strspeed[32];
donatien	0:b802fc31f1db	1310	struct passwd *pw;
donatien	0:b802fc31f1db	1311	char struid[32];
donatien	0:b802fc31f1db	1312	char *user_name;
donatien	0:b802fc31f1db	1313	char *argv[8];
donatien	0:b802fc31f1db	1314
donatien	0:b802fc31f1db	1315	if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
donatien	0:b802fc31f1db	1316	user_name = pw->pw_name;
donatien	0:b802fc31f1db	1317	else {
donatien	0:b802fc31f1db	1318	slprintf(struid, sizeof(struid), "%d", getuid());
donatien	0:b802fc31f1db	1319	user_name = struid;
donatien	0:b802fc31f1db	1320	}
donatien	0:b802fc31f1db	1321	slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
donatien	0:b802fc31f1db	1322
donatien	0:b802fc31f1db	1323	argv[0] = script;
donatien	0:b802fc31f1db	1324	argv[1] = ifname;
donatien	0:b802fc31f1db	1325	argv[2] = peer_authname;
donatien	0:b802fc31f1db	1326	argv[3] = user_name;
donatien	0:b802fc31f1db	1327	argv[4] = devnam;
donatien	0:b802fc31f1db	1328	argv[5] = strspeed;
donatien	0:b802fc31f1db	1329	argv[6] = NULL;
donatien	0:b802fc31f1db	1330
donatien	0:b802fc31f1db	1331	auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
donatien	0:b802fc31f1db	1332	}
donatien	0:b802fc31f1db	1333	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
donatien	0:b802fc31f1db	1334	#endif /* PPP_SUPPORT */

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Type:	Program
Created:	09 Jul 2010
Imports:	20
Forks:	0
Commits:	5
Dependents:	0
Dependencies:	0
Followers:	3

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lwip/netif/ppp/auth.c@0:b802fc31f1db, 2010-07-09 (annotated)

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