AmpereMeter - Example self-announcing webserver which controls …

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Dirk-Willem van Gulik (NXP/mbed) / Mbed 2 deprecated AmpereMeter

Example self-announcing webserver which controls a servo through a smallHTML userinterface.

lwip/netif/ppp/auth.c@0:a259777c45a3, 2010-08-14 (annotated)

Committer:: dirkx
Date:: Sat Aug 14 15:56:01 2010 +0000
Revision:: 0:a259777c45a3

Who changed what in which revision?

User	Revision	Line number	New contents of line
dirkx	0:a259777c45a3	1	/*****************************************************************************
dirkx	0:a259777c45a3	2	* auth.c - Network Authentication and Phase Control program file.
dirkx	0:a259777c45a3	3	*
dirkx	0:a259777c45a3	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
dirkx	0:a259777c45a3	5	* Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
dirkx	0:a259777c45a3	6	*
dirkx	0:a259777c45a3	7	* The authors hereby grant permission to use, copy, modify, distribute,
dirkx	0:a259777c45a3	8	* and license this software and its documentation for any purpose, provided
dirkx	0:a259777c45a3	9	* that existing copyright notices are retained in all copies and that this
dirkx	0:a259777c45a3	10	* notice and the following disclaimer are included verbatim in any
dirkx	0:a259777c45a3	11	* distributions. No written agreement, license, or royalty fee is required
dirkx	0:a259777c45a3	12	* for any of the authorized uses.
dirkx	0:a259777c45a3	13	*
dirkx	0:a259777c45a3	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
dirkx	0:a259777c45a3	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
dirkx	0:a259777c45a3	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
dirkx	0:a259777c45a3	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
dirkx	0:a259777c45a3	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
dirkx	0:a259777c45a3	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
dirkx	0:a259777c45a3	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
dirkx	0:a259777c45a3	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
dirkx	0:a259777c45a3	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
dirkx	0:a259777c45a3	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
dirkx	0:a259777c45a3	24	*
dirkx	0:a259777c45a3	25	******************************************************************************
dirkx	0:a259777c45a3	26	* REVISION HISTORY
dirkx	0:a259777c45a3	27	*
dirkx	0:a259777c45a3	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
dirkx	0:a259777c45a3	29	* Ported to lwIP.
dirkx	0:a259777c45a3	30	* 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
dirkx	0:a259777c45a3	31	* Ported from public pppd code.
dirkx	0:a259777c45a3	32	*****************************************************************************/
dirkx	0:a259777c45a3	33	/*
dirkx	0:a259777c45a3	34	* auth.c - PPP authentication and phase control.
dirkx	0:a259777c45a3	35	*
dirkx	0:a259777c45a3	36	* Copyright (c) 1993 The Australian National University.
dirkx	0:a259777c45a3	37	* All rights reserved.
dirkx	0:a259777c45a3	38	*
dirkx	0:a259777c45a3	39	* Redistribution and use in source and binary forms are permitted
dirkx	0:a259777c45a3	40	* provided that the above copyright notice and this paragraph are
dirkx	0:a259777c45a3	41	* duplicated in all such forms and that any documentation,
dirkx	0:a259777c45a3	42	* advertising materials, and other materials related to such
dirkx	0:a259777c45a3	43	* distribution and use acknowledge that the software was developed
dirkx	0:a259777c45a3	44	* by the Australian National University. The name of the University
dirkx	0:a259777c45a3	45	* may not be used to endorse or promote products derived from this
dirkx	0:a259777c45a3	46	* software without specific prior written permission.
dirkx	0:a259777c45a3	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
dirkx	0:a259777c45a3	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
dirkx	0:a259777c45a3	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
dirkx	0:a259777c45a3	50	*
dirkx	0:a259777c45a3	51	* Copyright (c) 1989 Carnegie Mellon University.
dirkx	0:a259777c45a3	52	* All rights reserved.
dirkx	0:a259777c45a3	53	*
dirkx	0:a259777c45a3	54	* Redistribution and use in source and binary forms are permitted
dirkx	0:a259777c45a3	55	* provided that the above copyright notice and this paragraph are
dirkx	0:a259777c45a3	56	* duplicated in all such forms and that any documentation,
dirkx	0:a259777c45a3	57	* advertising materials, and other materials related to such
dirkx	0:a259777c45a3	58	* distribution and use acknowledge that the software was developed
dirkx	0:a259777c45a3	59	* by Carnegie Mellon University. The name of the
dirkx	0:a259777c45a3	60	* University may not be used to endorse or promote products derived
dirkx	0:a259777c45a3	61	* from this software without specific prior written permission.
dirkx	0:a259777c45a3	62	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
dirkx	0:a259777c45a3	63	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
dirkx	0:a259777c45a3	64	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
dirkx	0:a259777c45a3	65	*/
dirkx	0:a259777c45a3	66
dirkx	0:a259777c45a3	67	#include "lwip/opt.h"
dirkx	0:a259777c45a3	68
dirkx	0:a259777c45a3	69	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
dirkx	0:a259777c45a3	70
dirkx	0:a259777c45a3	71	#include "ppp.h"
dirkx	0:a259777c45a3	72	#include "pppdebug.h"
dirkx	0:a259777c45a3	73
dirkx	0:a259777c45a3	74	#include "fsm.h"
dirkx	0:a259777c45a3	75	#include "lcp.h"
dirkx	0:a259777c45a3	76	#include "pap.h"
dirkx	0:a259777c45a3	77	#include "chap.h"
dirkx	0:a259777c45a3	78	#include "auth.h"
dirkx	0:a259777c45a3	79	#include "ipcp.h"
dirkx	0:a259777c45a3	80
dirkx	0:a259777c45a3	81	#if CBCP_SUPPORT
dirkx	0:a259777c45a3	82	#include "cbcp.h"
dirkx	0:a259777c45a3	83	#endif /* CBCP_SUPPORT */
dirkx	0:a259777c45a3	84
dirkx	0:a259777c45a3	85	#include "lwip/inet.h"
dirkx	0:a259777c45a3	86
dirkx	0:a259777c45a3	87	#include <string.h>
dirkx	0:a259777c45a3	88
dirkx	0:a259777c45a3	89	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	90	/* Bits in scan_authfile return value */
dirkx	0:a259777c45a3	91	#define NONWILD_SERVER 1
dirkx	0:a259777c45a3	92	#define NONWILD_CLIENT 2
dirkx	0:a259777c45a3	93
dirkx	0:a259777c45a3	94	#define ISWILD(word) (word[0] == '*' && word[1] == 0)
dirkx	0:a259777c45a3	95	#endif /* UNUSED */
dirkx	0:a259777c45a3	96
dirkx	0:a259777c45a3	97	#if PAP_SUPPORT \|\| CHAP_SUPPORT
dirkx	0:a259777c45a3	98	/* The name by which the peer authenticated itself to us. */
dirkx	0:a259777c45a3	99	static char peer_authname[MAXNAMELEN];
dirkx	0:a259777c45a3	100	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	101
dirkx	0:a259777c45a3	102	/* Records which authentication operations haven't completed yet. */
dirkx	0:a259777c45a3	103	static int auth_pending[NUM_PPP];
dirkx	0:a259777c45a3	104
dirkx	0:a259777c45a3	105	/* Set if we have successfully called plogin() */
dirkx	0:a259777c45a3	106	static int logged_in;
dirkx	0:a259777c45a3	107
dirkx	0:a259777c45a3	108	/* Set if we have run the /etc/ppp/auth-up script. */
dirkx	0:a259777c45a3	109	static int did_authup; /* @todo, we don't need this in lwip*/
dirkx	0:a259777c45a3	110
dirkx	0:a259777c45a3	111	/* List of addresses which the peer may use. */
dirkx	0:a259777c45a3	112	static struct wordlist *addresses[NUM_PPP];
dirkx	0:a259777c45a3	113
dirkx	0:a259777c45a3	114	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	115	/* Wordlist giving addresses which the peer may use
dirkx	0:a259777c45a3	116	without authenticating itself. */
dirkx	0:a259777c45a3	117	static struct wordlist *noauth_addrs;
dirkx	0:a259777c45a3	118
dirkx	0:a259777c45a3	119	/* Extra options to apply, from the secrets file entry for the peer. */
dirkx	0:a259777c45a3	120	static struct wordlist *extra_options;
dirkx	0:a259777c45a3	121	#endif /* UNUSED */
dirkx	0:a259777c45a3	122
dirkx	0:a259777c45a3	123	/* Number of network protocols which we have opened. */
dirkx	0:a259777c45a3	124	static int num_np_open;
dirkx	0:a259777c45a3	125
dirkx	0:a259777c45a3	126	/* Number of network protocols which have come up. */
dirkx	0:a259777c45a3	127	static int num_np_up;
dirkx	0:a259777c45a3	128
dirkx	0:a259777c45a3	129	#if PAP_SUPPORT \|\| CHAP_SUPPORT
dirkx	0:a259777c45a3	130	/* Set if we got the contents of passwd[] from the pap-secrets file. */
dirkx	0:a259777c45a3	131	static int passwd_from_file;
dirkx	0:a259777c45a3	132	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	133
dirkx	0:a259777c45a3	134	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	135	/* Set if we require authentication only because we have a default route. */
dirkx	0:a259777c45a3	136	static bool default_auth;
dirkx	0:a259777c45a3	137
dirkx	0:a259777c45a3	138	/* Hook to enable a plugin to control the idle time limit */
dirkx	0:a259777c45a3	139	int (idle_time_hook) __P((struct ppp_idle )) = NULL;
dirkx	0:a259777c45a3	140
dirkx	0:a259777c45a3	141	/* Hook for a plugin to say whether we can possibly authenticate any peer */
dirkx	0:a259777c45a3	142	int (*pap_check_hook) __P((void)) = NULL;
dirkx	0:a259777c45a3	143
dirkx	0:a259777c45a3	144	/* Hook for a plugin to check the PAP user and password */
dirkx	0:a259777c45a3	145	int (pap_auth_hook) __P((char user, char passwd, char *msgp,
dirkx	0:a259777c45a3	146	struct wordlist **paddrs,
dirkx	0:a259777c45a3	147	struct wordlist **popts)) = NULL;
dirkx	0:a259777c45a3	148
dirkx	0:a259777c45a3	149	/* Hook for a plugin to know about the PAP user logout */
dirkx	0:a259777c45a3	150	void (*pap_logout_hook) __P((void)) = NULL;
dirkx	0:a259777c45a3	151
dirkx	0:a259777c45a3	152	/* Hook for a plugin to get the PAP password for authenticating us */
dirkx	0:a259777c45a3	153	int (pap_passwd_hook) __P((char user, char *passwd)) = NULL;
dirkx	0:a259777c45a3	154
dirkx	0:a259777c45a3	155	/*
dirkx	0:a259777c45a3	156	* This is used to ensure that we don't start an auth-up/down
dirkx	0:a259777c45a3	157	* script while one is already running.
dirkx	0:a259777c45a3	158	*/
dirkx	0:a259777c45a3	159	enum script_state {
dirkx	0:a259777c45a3	160	s_down,
dirkx	0:a259777c45a3	161	s_up
dirkx	0:a259777c45a3	162	};
dirkx	0:a259777c45a3	163
dirkx	0:a259777c45a3	164	static enum script_state auth_state = s_down;
dirkx	0:a259777c45a3	165	static enum script_state auth_script_state = s_down;
dirkx	0:a259777c45a3	166	static pid_t auth_script_pid = 0;
dirkx	0:a259777c45a3	167
dirkx	0:a259777c45a3	168	/*
dirkx	0:a259777c45a3	169	* Option variables.
dirkx	0:a259777c45a3	170	* lwip: some of these are present in the ppp_settings structure
dirkx	0:a259777c45a3	171	*/
dirkx	0:a259777c45a3	172	bool uselogin = 0; /* Use /etc/passwd for checking PAP */
dirkx	0:a259777c45a3	173	bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
dirkx	0:a259777c45a3	174	bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
dirkx	0:a259777c45a3	175	bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
dirkx	0:a259777c45a3	176	bool usehostname = 0; /* Use hostname for our_name */
dirkx	0:a259777c45a3	177	bool auth_required = 0; /* Always require authentication from peer */
dirkx	0:a259777c45a3	178	bool allow_any_ip = 0; /* Allow peer to use any IP address */
dirkx	0:a259777c45a3	179	bool explicit_remote = 0; /* User specified explicit remote name */
dirkx	0:a259777c45a3	180	char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
dirkx	0:a259777c45a3	181
dirkx	0:a259777c45a3	182	#endif /* UNUSED */
dirkx	0:a259777c45a3	183
dirkx	0:a259777c45a3	184	/* Bits in auth_pending[] */
dirkx	0:a259777c45a3	185	#define PAP_WITHPEER 1
dirkx	0:a259777c45a3	186	#define PAP_PEER 2
dirkx	0:a259777c45a3	187	#define CHAP_WITHPEER 4
dirkx	0:a259777c45a3	188	#define CHAP_PEER 8
dirkx	0:a259777c45a3	189
dirkx	0:a259777c45a3	190	/* @todo, move this somewhere */
dirkx	0:a259777c45a3	191	/* Used for storing a sequence of words. Usually malloced. */
dirkx	0:a259777c45a3	192	struct wordlist {
dirkx	0:a259777c45a3	193	struct wordlist *next;
dirkx	0:a259777c45a3	194	char word[1];
dirkx	0:a259777c45a3	195	};
dirkx	0:a259777c45a3	196
dirkx	0:a259777c45a3	197
dirkx	0:a259777c45a3	198	extern char crypt (const char , const char *);
dirkx	0:a259777c45a3	199
dirkx	0:a259777c45a3	200	/* Prototypes for procedures local to this file. */
dirkx	0:a259777c45a3	201
dirkx	0:a259777c45a3	202	static void network_phase (int);
dirkx	0:a259777c45a3	203	static void check_idle (void *);
dirkx	0:a259777c45a3	204	static void connect_time_expired (void *);
dirkx	0:a259777c45a3	205	#if 0
dirkx	0:a259777c45a3	206	static int plogin (char , char , char *, int );
dirkx	0:a259777c45a3	207	#endif
dirkx	0:a259777c45a3	208	static void plogout (void);
dirkx	0:a259777c45a3	209	static int null_login (int);
dirkx	0:a259777c45a3	210	static int get_pap_passwd (int, char , char );
dirkx	0:a259777c45a3	211	static int have_pap_secret (void);
dirkx	0:a259777c45a3	212	static int have_chap_secret (char , char , u32_t);
dirkx	0:a259777c45a3	213	static int ip_addr_check (u32_t, struct wordlist *);
dirkx	0:a259777c45a3	214
dirkx	0:a259777c45a3	215	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	216	static int scan_authfile (FILE , char , char , char ,
dirkx	0:a259777c45a3	217	struct wordlist , struct wordlist ,
dirkx	0:a259777c45a3	218	char *);
dirkx	0:a259777c45a3	219	static void free_wordlist (struct wordlist *);
dirkx	0:a259777c45a3	220	static void auth_script (char *);
dirkx	0:a259777c45a3	221	static void auth_script_done (void *);
dirkx	0:a259777c45a3	222	static void set_allowed_addrs (int unit, struct wordlist *addrs);
dirkx	0:a259777c45a3	223	static int some_ip_ok (struct wordlist *);
dirkx	0:a259777c45a3	224	static int setupapfile (char **);
dirkx	0:a259777c45a3	225	static int privgroup (char **);
dirkx	0:a259777c45a3	226	static int set_noauth_addr (char **);
dirkx	0:a259777c45a3	227	static void check_access (FILE , char );
dirkx	0:a259777c45a3	228	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	229
dirkx	0:a259777c45a3	230	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	231	/*
dirkx	0:a259777c45a3	232	* Authentication-related options.
dirkx	0:a259777c45a3	233	*/
dirkx	0:a259777c45a3	234	option_t auth_options[] = {
dirkx	0:a259777c45a3	235	{ "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
dirkx	0:a259777c45a3	236	"Require PAP authentication from peer", 1, &auth_required },
dirkx	0:a259777c45a3	237	{ "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
dirkx	0:a259777c45a3	238	"Require PAP authentication from peer", 1, &auth_required },
dirkx	0:a259777c45a3	239	{ "refuse-pap", o_bool, &refuse_pap,
dirkx	0:a259777c45a3	240	"Don't agree to auth to peer with PAP", 1 },
dirkx	0:a259777c45a3	241	{ "-pap", o_bool, &refuse_pap,
dirkx	0:a259777c45a3	242	"Don't allow PAP authentication with peer", 1 },
dirkx	0:a259777c45a3	243	{ "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
dirkx	0:a259777c45a3	244	"Require CHAP authentication from peer", 1, &auth_required },
dirkx	0:a259777c45a3	245	{ "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
dirkx	0:a259777c45a3	246	"Require CHAP authentication from peer", 1, &auth_required },
dirkx	0:a259777c45a3	247	{ "refuse-chap", o_bool, &refuse_chap,
dirkx	0:a259777c45a3	248	"Don't agree to auth to peer with CHAP", 1 },
dirkx	0:a259777c45a3	249	{ "-chap", o_bool, &refuse_chap,
dirkx	0:a259777c45a3	250	"Don't allow CHAP authentication with peer", 1 },
dirkx	0:a259777c45a3	251	{ "name", o_string, our_name,
dirkx	0:a259777c45a3	252	"Set local name for authentication",
dirkx	0:a259777c45a3	253	OPT_PRIV\|OPT_STATIC, NULL, MAXNAMELEN },
dirkx	0:a259777c45a3	254	{ "user", o_string, user,
dirkx	0:a259777c45a3	255	"Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
dirkx	0:a259777c45a3	256	{ "usehostname", o_bool, &usehostname,
dirkx	0:a259777c45a3	257	"Must use hostname for authentication", 1 },
dirkx	0:a259777c45a3	258	{ "remotename", o_string, remote_name,
dirkx	0:a259777c45a3	259	"Set remote name for authentication", OPT_STATIC,
dirkx	0:a259777c45a3	260	&explicit_remote, MAXNAMELEN },
dirkx	0:a259777c45a3	261	{ "auth", o_bool, &auth_required,
dirkx	0:a259777c45a3	262	"Require authentication from peer", 1 },
dirkx	0:a259777c45a3	263	{ "noauth", o_bool, &auth_required,
dirkx	0:a259777c45a3	264	"Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
dirkx	0:a259777c45a3	265	{ "login", o_bool, &uselogin,
dirkx	0:a259777c45a3	266	"Use system password database for PAP", 1 },
dirkx	0:a259777c45a3	267	{ "papcrypt", o_bool, &cryptpap,
dirkx	0:a259777c45a3	268	"PAP passwords are encrypted", 1 },
dirkx	0:a259777c45a3	269	{ "+ua", o_special, (void *)setupapfile,
dirkx	0:a259777c45a3	270	"Get PAP user and password from file" },
dirkx	0:a259777c45a3	271	{ "password", o_string, passwd,
dirkx	0:a259777c45a3	272	"Password for authenticating us to the peer", OPT_STATIC,
dirkx	0:a259777c45a3	273	NULL, MAXSECRETLEN },
dirkx	0:a259777c45a3	274	{ "privgroup", o_special, (void *)privgroup,
dirkx	0:a259777c45a3	275	"Allow group members to use privileged options", OPT_PRIV },
dirkx	0:a259777c45a3	276	{ "allow-ip", o_special, (void *)set_noauth_addr,
dirkx	0:a259777c45a3	277	"Set IP address(es) which can be used without authentication",
dirkx	0:a259777c45a3	278	OPT_PRIV },
dirkx	0:a259777c45a3	279	{ NULL }
dirkx	0:a259777c45a3	280	};
dirkx	0:a259777c45a3	281	#endif /* UNUSED */
dirkx	0:a259777c45a3	282	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	283	/*
dirkx	0:a259777c45a3	284	* setupapfile - specifies UPAP info for authenticating with peer.
dirkx	0:a259777c45a3	285	*/
dirkx	0:a259777c45a3	286	static int
dirkx	0:a259777c45a3	287	setupapfile(char **argv)
dirkx	0:a259777c45a3	288	{
dirkx	0:a259777c45a3	289	FILE * ufile;
dirkx	0:a259777c45a3	290	int l;
dirkx	0:a259777c45a3	291
dirkx	0:a259777c45a3	292	lcp_allowoptions[0].neg_upap = 1;
dirkx	0:a259777c45a3	293
dirkx	0:a259777c45a3	294	/* open user info file */
dirkx	0:a259777c45a3	295	seteuid(getuid());
dirkx	0:a259777c45a3	296	ufile = fopen(*argv, "r");
dirkx	0:a259777c45a3	297	seteuid(0);
dirkx	0:a259777c45a3	298	if (ufile == NULL) {
dirkx	0:a259777c45a3	299	option_error("unable to open user login data file %s", *argv);
dirkx	0:a259777c45a3	300	return 0;
dirkx	0:a259777c45a3	301	}
dirkx	0:a259777c45a3	302	check_access(ufile, *argv);
dirkx	0:a259777c45a3	303
dirkx	0:a259777c45a3	304	/* get username */
dirkx	0:a259777c45a3	305	if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
dirkx	0:a259777c45a3	306	\|\| fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
dirkx	0:a259777c45a3	307	option_error("unable to read user login data file %s", *argv);
dirkx	0:a259777c45a3	308	return 0;
dirkx	0:a259777c45a3	309	}
dirkx	0:a259777c45a3	310	fclose(ufile);
dirkx	0:a259777c45a3	311
dirkx	0:a259777c45a3	312	/* get rid of newlines */
dirkx	0:a259777c45a3	313	l = strlen(user);
dirkx	0:a259777c45a3	314	if (l > 0 && user[l-1] == '\n')
dirkx	0:a259777c45a3	315	user[l-1] = 0;
dirkx	0:a259777c45a3	316	l = strlen(passwd);
dirkx	0:a259777c45a3	317	if (l > 0 && passwd[l-1] == '\n')
dirkx	0:a259777c45a3	318	passwd[l-1] = 0;
dirkx	0:a259777c45a3	319
dirkx	0:a259777c45a3	320	return (1);
dirkx	0:a259777c45a3	321	}
dirkx	0:a259777c45a3	322	#endif /* UNUSED */
dirkx	0:a259777c45a3	323
dirkx	0:a259777c45a3	324	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	325	/*
dirkx	0:a259777c45a3	326	* privgroup - allow members of the group to have privileged access.
dirkx	0:a259777c45a3	327	*/
dirkx	0:a259777c45a3	328	static int
dirkx	0:a259777c45a3	329	privgroup(char **argv)
dirkx	0:a259777c45a3	330	{
dirkx	0:a259777c45a3	331	struct group *g;
dirkx	0:a259777c45a3	332	int i;
dirkx	0:a259777c45a3	333
dirkx	0:a259777c45a3	334	g = getgrnam(*argv);
dirkx	0:a259777c45a3	335	if (g == 0) {
dirkx	0:a259777c45a3	336	option_error("group %s is unknown", *argv);
dirkx	0:a259777c45a3	337	return 0;
dirkx	0:a259777c45a3	338	}
dirkx	0:a259777c45a3	339	for (i = 0; i < ngroups; ++i) {
dirkx	0:a259777c45a3	340	if (groups[i] == g->gr_gid) {
dirkx	0:a259777c45a3	341	privileged = 1;
dirkx	0:a259777c45a3	342	break;
dirkx	0:a259777c45a3	343	}
dirkx	0:a259777c45a3	344	}
dirkx	0:a259777c45a3	345	return 1;
dirkx	0:a259777c45a3	346	}
dirkx	0:a259777c45a3	347	#endif
dirkx	0:a259777c45a3	348
dirkx	0:a259777c45a3	349	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	350	/*
dirkx	0:a259777c45a3	351	* set_noauth_addr - set address(es) that can be used without authentication.
dirkx	0:a259777c45a3	352	* Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
dirkx	0:a259777c45a3	353	*/
dirkx	0:a259777c45a3	354	static int
dirkx	0:a259777c45a3	355	set_noauth_addr(char **argv)
dirkx	0:a259777c45a3	356	{
dirkx	0:a259777c45a3	357	char addr = argv;
dirkx	0:a259777c45a3	358	int l = strlen(addr);
dirkx	0:a259777c45a3	359	struct wordlist *wp;
dirkx	0:a259777c45a3	360
dirkx	0:a259777c45a3	361	wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
dirkx	0:a259777c45a3	362	if (wp == NULL)
dirkx	0:a259777c45a3	363	novm("allow-ip argument");
dirkx	0:a259777c45a3	364	wp->word = (char *) (wp + 1);
dirkx	0:a259777c45a3	365	wp->next = noauth_addrs;
dirkx	0:a259777c45a3	366	BCOPY(addr, wp->word, l);
dirkx	0:a259777c45a3	367	noauth_addrs = wp;
dirkx	0:a259777c45a3	368	return 1;
dirkx	0:a259777c45a3	369	}
dirkx	0:a259777c45a3	370	#endif /* UNUSED */
dirkx	0:a259777c45a3	371
dirkx	0:a259777c45a3	372	/*
dirkx	0:a259777c45a3	373	* An Open on LCP has requested a change from Dead to Establish phase.
dirkx	0:a259777c45a3	374	* Do what's necessary to bring the physical layer up.
dirkx	0:a259777c45a3	375	*/
dirkx	0:a259777c45a3	376	void
dirkx	0:a259777c45a3	377	link_required(int unit)
dirkx	0:a259777c45a3	378	{
dirkx	0:a259777c45a3	379	LWIP_UNUSED_ARG(unit);
dirkx	0:a259777c45a3	380
dirkx	0:a259777c45a3	381	AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
dirkx	0:a259777c45a3	382	}
dirkx	0:a259777c45a3	383
dirkx	0:a259777c45a3	384	/*
dirkx	0:a259777c45a3	385	* LCP has terminated the link; go to the Dead phase and take the
dirkx	0:a259777c45a3	386	* physical layer down.
dirkx	0:a259777c45a3	387	*/
dirkx	0:a259777c45a3	388	void
dirkx	0:a259777c45a3	389	link_terminated(int unit)
dirkx	0:a259777c45a3	390	{
dirkx	0:a259777c45a3	391	AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
dirkx	0:a259777c45a3	392	if (lcp_phase[unit] == PHASE_DEAD) {
dirkx	0:a259777c45a3	393	return;
dirkx	0:a259777c45a3	394	}
dirkx	0:a259777c45a3	395	if (logged_in) {
dirkx	0:a259777c45a3	396	plogout();
dirkx	0:a259777c45a3	397	}
dirkx	0:a259777c45a3	398	lcp_phase[unit] = PHASE_DEAD;
dirkx	0:a259777c45a3	399	AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
dirkx	0:a259777c45a3	400	pppLinkTerminated(unit);
dirkx	0:a259777c45a3	401	}
dirkx	0:a259777c45a3	402
dirkx	0:a259777c45a3	403	/*
dirkx	0:a259777c45a3	404	* LCP has gone down; it will either die or try to re-establish.
dirkx	0:a259777c45a3	405	*/
dirkx	0:a259777c45a3	406	void
dirkx	0:a259777c45a3	407	link_down(int unit)
dirkx	0:a259777c45a3	408	{
dirkx	0:a259777c45a3	409	int i;
dirkx	0:a259777c45a3	410	struct protent *protp;
dirkx	0:a259777c45a3	411
dirkx	0:a259777c45a3	412	AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
dirkx	0:a259777c45a3	413
dirkx	0:a259777c45a3	414	if (did_authup) {
dirkx	0:a259777c45a3	415	/* XXX Do link down processing. */
dirkx	0:a259777c45a3	416	did_authup = 0;
dirkx	0:a259777c45a3	417	}
dirkx	0:a259777c45a3	418	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
dirkx	0:a259777c45a3	419	if (!protp->enabled_flag) {
dirkx	0:a259777c45a3	420	continue;
dirkx	0:a259777c45a3	421	}
dirkx	0:a259777c45a3	422	if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
dirkx	0:a259777c45a3	423	(*protp->lowerdown)(unit);
dirkx	0:a259777c45a3	424	}
dirkx	0:a259777c45a3	425	if (protp->protocol < 0xC000 && protp->close != NULL) {
dirkx	0:a259777c45a3	426	(*protp->close)(unit, "LCP down");
dirkx	0:a259777c45a3	427	}
dirkx	0:a259777c45a3	428	}
dirkx	0:a259777c45a3	429	num_np_open = 0; /* number of network protocols we have opened */
dirkx	0:a259777c45a3	430	num_np_up = 0; /* Number of network protocols which have come up */
dirkx	0:a259777c45a3	431
dirkx	0:a259777c45a3	432	if (lcp_phase[unit] != PHASE_DEAD) {
dirkx	0:a259777c45a3	433	lcp_phase[unit] = PHASE_TERMINATE;
dirkx	0:a259777c45a3	434	}
dirkx	0:a259777c45a3	435	pppLinkDown(unit);
dirkx	0:a259777c45a3	436	}
dirkx	0:a259777c45a3	437
dirkx	0:a259777c45a3	438	/*
dirkx	0:a259777c45a3	439	* The link is established.
dirkx	0:a259777c45a3	440	* Proceed to the Dead, Authenticate or Network phase as appropriate.
dirkx	0:a259777c45a3	441	*/
dirkx	0:a259777c45a3	442	void
dirkx	0:a259777c45a3	443	link_established(int unit)
dirkx	0:a259777c45a3	444	{
dirkx	0:a259777c45a3	445	int auth;
dirkx	0:a259777c45a3	446	int i;
dirkx	0:a259777c45a3	447	struct protent *protp;
dirkx	0:a259777c45a3	448	lcp_options *wo = &lcp_wantoptions[unit];
dirkx	0:a259777c45a3	449	lcp_options *go = &lcp_gotoptions[unit];
dirkx	0:a259777c45a3	450	#if PAP_SUPPORT \|\| CHAP_SUPPORT
dirkx	0:a259777c45a3	451	lcp_options *ho = &lcp_hisoptions[unit];
dirkx	0:a259777c45a3	452	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	453
dirkx	0:a259777c45a3	454	AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
dirkx	0:a259777c45a3	455	/*
dirkx	0:a259777c45a3	456	* Tell higher-level protocols that LCP is up.
dirkx	0:a259777c45a3	457	*/
dirkx	0:a259777c45a3	458	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
dirkx	0:a259777c45a3	459	if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
dirkx	0:a259777c45a3	460	(*protp->lowerup)(unit);
dirkx	0:a259777c45a3	461	}
dirkx	0:a259777c45a3	462	}
dirkx	0:a259777c45a3	463	if (ppp_settings.auth_required && !(go->neg_chap \|\| go->neg_upap)) {
dirkx	0:a259777c45a3	464	/*
dirkx	0:a259777c45a3	465	* We wanted the peer to authenticate itself, and it refused:
dirkx	0:a259777c45a3	466	* treat it as though it authenticated with PAP using a username
dirkx	0:a259777c45a3	467	* of "" and a password of "". If that's not OK, boot it out.
dirkx	0:a259777c45a3	468	*/
dirkx	0:a259777c45a3	469	if (!wo->neg_upap \|\| !null_login(unit)) {
dirkx	0:a259777c45a3	470	AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
dirkx	0:a259777c45a3	471	lcp_close(unit, "peer refused to authenticate");
dirkx	0:a259777c45a3	472	return;
dirkx	0:a259777c45a3	473	}
dirkx	0:a259777c45a3	474	}
dirkx	0:a259777c45a3	475
dirkx	0:a259777c45a3	476	lcp_phase[unit] = PHASE_AUTHENTICATE;
dirkx	0:a259777c45a3	477	auth = 0;
dirkx	0:a259777c45a3	478	#if CHAP_SUPPORT
dirkx	0:a259777c45a3	479	if (go->neg_chap) {
dirkx	0:a259777c45a3	480	ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
dirkx	0:a259777c45a3	481	auth \|= CHAP_PEER;
dirkx	0:a259777c45a3	482	}
dirkx	0:a259777c45a3	483	#endif /* CHAP_SUPPORT */
dirkx	0:a259777c45a3	484	#if PAP_SUPPORT && CHAP_SUPPORT
dirkx	0:a259777c45a3	485	else
dirkx	0:a259777c45a3	486	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
dirkx	0:a259777c45a3	487	#if PAP_SUPPORT
dirkx	0:a259777c45a3	488	if (go->neg_upap) {
dirkx	0:a259777c45a3	489	upap_authpeer(unit);
dirkx	0:a259777c45a3	490	auth \|= PAP_PEER;
dirkx	0:a259777c45a3	491	}
dirkx	0:a259777c45a3	492	#endif /* PAP_SUPPORT */
dirkx	0:a259777c45a3	493	#if CHAP_SUPPORT
dirkx	0:a259777c45a3	494	if (ho->neg_chap) {
dirkx	0:a259777c45a3	495	ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
dirkx	0:a259777c45a3	496	auth \|= CHAP_WITHPEER;
dirkx	0:a259777c45a3	497	}
dirkx	0:a259777c45a3	498	#endif /* CHAP_SUPPORT */
dirkx	0:a259777c45a3	499	#if PAP_SUPPORT && CHAP_SUPPORT
dirkx	0:a259777c45a3	500	else
dirkx	0:a259777c45a3	501	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
dirkx	0:a259777c45a3	502	#if PAP_SUPPORT
dirkx	0:a259777c45a3	503	if (ho->neg_upap) {
dirkx	0:a259777c45a3	504	if (ppp_settings.passwd[0] == 0) {
dirkx	0:a259777c45a3	505	passwd_from_file = 1;
dirkx	0:a259777c45a3	506	if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
dirkx	0:a259777c45a3	507	AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
dirkx	0:a259777c45a3	508	}
dirkx	0:a259777c45a3	509	}
dirkx	0:a259777c45a3	510	upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
dirkx	0:a259777c45a3	511	auth \|= PAP_WITHPEER;
dirkx	0:a259777c45a3	512	}
dirkx	0:a259777c45a3	513	#endif /* PAP_SUPPORT */
dirkx	0:a259777c45a3	514	auth_pending[unit] = auth;
dirkx	0:a259777c45a3	515
dirkx	0:a259777c45a3	516	if (!auth) {
dirkx	0:a259777c45a3	517	network_phase(unit);
dirkx	0:a259777c45a3	518	}
dirkx	0:a259777c45a3	519	}
dirkx	0:a259777c45a3	520
dirkx	0:a259777c45a3	521	/*
dirkx	0:a259777c45a3	522	* Proceed to the network phase.
dirkx	0:a259777c45a3	523	*/
dirkx	0:a259777c45a3	524	static void
dirkx	0:a259777c45a3	525	network_phase(int unit)
dirkx	0:a259777c45a3	526	{
dirkx	0:a259777c45a3	527	int i;
dirkx	0:a259777c45a3	528	struct protent *protp;
dirkx	0:a259777c45a3	529	lcp_options *go = &lcp_gotoptions[unit];
dirkx	0:a259777c45a3	530
dirkx	0:a259777c45a3	531	/*
dirkx	0:a259777c45a3	532	* If the peer had to authenticate, run the auth-up script now.
dirkx	0:a259777c45a3	533	*/
dirkx	0:a259777c45a3	534	if ((go->neg_chap \|\| go->neg_upap) && !did_authup) {
dirkx	0:a259777c45a3	535	/* XXX Do setup for peer authentication. */
dirkx	0:a259777c45a3	536	did_authup = 1;
dirkx	0:a259777c45a3	537	}
dirkx	0:a259777c45a3	538
dirkx	0:a259777c45a3	539	#if CBCP_SUPPORT
dirkx	0:a259777c45a3	540	/*
dirkx	0:a259777c45a3	541	* If we negotiated callback, do it now.
dirkx	0:a259777c45a3	542	*/
dirkx	0:a259777c45a3	543	if (go->neg_cbcp) {
dirkx	0:a259777c45a3	544	lcp_phase[unit] = PHASE_CALLBACK;
dirkx	0:a259777c45a3	545	(*cbcp_protent.open)(unit);
dirkx	0:a259777c45a3	546	return;
dirkx	0:a259777c45a3	547	}
dirkx	0:a259777c45a3	548	#endif /* CBCP_SUPPORT */
dirkx	0:a259777c45a3	549
dirkx	0:a259777c45a3	550	lcp_phase[unit] = PHASE_NETWORK;
dirkx	0:a259777c45a3	551	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
dirkx	0:a259777c45a3	552	if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
dirkx	0:a259777c45a3	553	(*protp->open)(unit);
dirkx	0:a259777c45a3	554	if (protp->protocol != PPP_CCP) {
dirkx	0:a259777c45a3	555	++num_np_open;
dirkx	0:a259777c45a3	556	}
dirkx	0:a259777c45a3	557	}
dirkx	0:a259777c45a3	558	}
dirkx	0:a259777c45a3	559
dirkx	0:a259777c45a3	560	if (num_np_open == 0) {
dirkx	0:a259777c45a3	561	/* nothing to do */
dirkx	0:a259777c45a3	562	lcp_close(0, "No network protocols running");
dirkx	0:a259777c45a3	563	}
dirkx	0:a259777c45a3	564	}
dirkx	0:a259777c45a3	565	/* @todo: add void start_networks(void) here (pppd 2.3.11) */
dirkx	0:a259777c45a3	566
dirkx	0:a259777c45a3	567	/*
dirkx	0:a259777c45a3	568	* The peer has failed to authenticate himself using `protocol'.
dirkx	0:a259777c45a3	569	*/
dirkx	0:a259777c45a3	570	void
dirkx	0:a259777c45a3	571	auth_peer_fail(int unit, u16_t protocol)
dirkx	0:a259777c45a3	572	{
dirkx	0:a259777c45a3	573	LWIP_UNUSED_ARG(protocol);
dirkx	0:a259777c45a3	574
dirkx	0:a259777c45a3	575	AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
dirkx	0:a259777c45a3	576	/*
dirkx	0:a259777c45a3	577	* Authentication failure: take the link down
dirkx	0:a259777c45a3	578	*/
dirkx	0:a259777c45a3	579	lcp_close(unit, "Authentication failed");
dirkx	0:a259777c45a3	580	}
dirkx	0:a259777c45a3	581
dirkx	0:a259777c45a3	582
dirkx	0:a259777c45a3	583	#if PAP_SUPPORT \|\| CHAP_SUPPORT
dirkx	0:a259777c45a3	584	/*
dirkx	0:a259777c45a3	585	* The peer has been successfully authenticated using `protocol'.
dirkx	0:a259777c45a3	586	*/
dirkx	0:a259777c45a3	587	void
dirkx	0:a259777c45a3	588	auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
dirkx	0:a259777c45a3	589	{
dirkx	0:a259777c45a3	590	int pbit;
dirkx	0:a259777c45a3	591
dirkx	0:a259777c45a3	592	AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
dirkx	0:a259777c45a3	593	switch (protocol) {
dirkx	0:a259777c45a3	594	case PPP_CHAP:
dirkx	0:a259777c45a3	595	pbit = CHAP_PEER;
dirkx	0:a259777c45a3	596	break;
dirkx	0:a259777c45a3	597	case PPP_PAP:
dirkx	0:a259777c45a3	598	pbit = PAP_PEER;
dirkx	0:a259777c45a3	599	break;
dirkx	0:a259777c45a3	600	default:
dirkx	0:a259777c45a3	601	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
dirkx	0:a259777c45a3	602	return;
dirkx	0:a259777c45a3	603	}
dirkx	0:a259777c45a3	604
dirkx	0:a259777c45a3	605	/*
dirkx	0:a259777c45a3	606	* Save the authenticated name of the peer for later.
dirkx	0:a259777c45a3	607	*/
dirkx	0:a259777c45a3	608	if (namelen > (int)sizeof(peer_authname) - 1) {
dirkx	0:a259777c45a3	609	namelen = sizeof(peer_authname) - 1;
dirkx	0:a259777c45a3	610	}
dirkx	0:a259777c45a3	611	BCOPY(name, peer_authname, namelen);
dirkx	0:a259777c45a3	612	peer_authname[namelen] = 0;
dirkx	0:a259777c45a3	613
dirkx	0:a259777c45a3	614	/*
dirkx	0:a259777c45a3	615	* If there is no more authentication still to be done,
dirkx	0:a259777c45a3	616	* proceed to the network (or callback) phase.
dirkx	0:a259777c45a3	617	*/
dirkx	0:a259777c45a3	618	if ((auth_pending[unit] &= ~pbit) == 0) {
dirkx	0:a259777c45a3	619	network_phase(unit);
dirkx	0:a259777c45a3	620	}
dirkx	0:a259777c45a3	621	}
dirkx	0:a259777c45a3	622
dirkx	0:a259777c45a3	623	/*
dirkx	0:a259777c45a3	624	* We have failed to authenticate ourselves to the peer using `protocol'.
dirkx	0:a259777c45a3	625	*/
dirkx	0:a259777c45a3	626	void
dirkx	0:a259777c45a3	627	auth_withpeer_fail(int unit, u16_t protocol)
dirkx	0:a259777c45a3	628	{
dirkx	0:a259777c45a3	629	int errCode = PPPERR_AUTHFAIL;
dirkx	0:a259777c45a3	630
dirkx	0:a259777c45a3	631	LWIP_UNUSED_ARG(protocol);
dirkx	0:a259777c45a3	632
dirkx	0:a259777c45a3	633	AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
dirkx	0:a259777c45a3	634	if (passwd_from_file) {
dirkx	0:a259777c45a3	635	BZERO(ppp_settings.passwd, MAXSECRETLEN);
dirkx	0:a259777c45a3	636	}
dirkx	0:a259777c45a3	637	/*
dirkx	0:a259777c45a3	638	* XXX Warning: the unit number indicates the interface which is
dirkx	0:a259777c45a3	639	* not necessarily the PPP connection. It works here as long
dirkx	0:a259777c45a3	640	* as we are only supporting PPP interfaces.
dirkx	0:a259777c45a3	641	*/
dirkx	0:a259777c45a3	642	/* @todo: Remove pppIOCtl, it is not used anywhere else.
dirkx	0:a259777c45a3	643	Instead, directly set errCode. */
dirkx	0:a259777c45a3	644	pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
dirkx	0:a259777c45a3	645
dirkx	0:a259777c45a3	646	/*
dirkx	0:a259777c45a3	647	* We've failed to authenticate ourselves to our peer.
dirkx	0:a259777c45a3	648	* He'll probably take the link down, and there's not much
dirkx	0:a259777c45a3	649	* we can do except wait for that.
dirkx	0:a259777c45a3	650	*/
dirkx	0:a259777c45a3	651	}
dirkx	0:a259777c45a3	652
dirkx	0:a259777c45a3	653	/*
dirkx	0:a259777c45a3	654	* We have successfully authenticated ourselves with the peer using `protocol'.
dirkx	0:a259777c45a3	655	*/
dirkx	0:a259777c45a3	656	void
dirkx	0:a259777c45a3	657	auth_withpeer_success(int unit, u16_t protocol)
dirkx	0:a259777c45a3	658	{
dirkx	0:a259777c45a3	659	int pbit;
dirkx	0:a259777c45a3	660
dirkx	0:a259777c45a3	661	AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
dirkx	0:a259777c45a3	662	switch (protocol) {
dirkx	0:a259777c45a3	663	case PPP_CHAP:
dirkx	0:a259777c45a3	664	pbit = CHAP_WITHPEER;
dirkx	0:a259777c45a3	665	break;
dirkx	0:a259777c45a3	666	case PPP_PAP:
dirkx	0:a259777c45a3	667	if (passwd_from_file) {
dirkx	0:a259777c45a3	668	BZERO(ppp_settings.passwd, MAXSECRETLEN);
dirkx	0:a259777c45a3	669	}
dirkx	0:a259777c45a3	670	pbit = PAP_WITHPEER;
dirkx	0:a259777c45a3	671	break;
dirkx	0:a259777c45a3	672	default:
dirkx	0:a259777c45a3	673	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
dirkx	0:a259777c45a3	674	pbit = 0;
dirkx	0:a259777c45a3	675	}
dirkx	0:a259777c45a3	676
dirkx	0:a259777c45a3	677	/*
dirkx	0:a259777c45a3	678	* If there is no more authentication still being done,
dirkx	0:a259777c45a3	679	* proceed to the network (or callback) phase.
dirkx	0:a259777c45a3	680	*/
dirkx	0:a259777c45a3	681	if ((auth_pending[unit] &= ~pbit) == 0) {
dirkx	0:a259777c45a3	682	network_phase(unit);
dirkx	0:a259777c45a3	683	}
dirkx	0:a259777c45a3	684	}
dirkx	0:a259777c45a3	685	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	686
dirkx	0:a259777c45a3	687
dirkx	0:a259777c45a3	688	/*
dirkx	0:a259777c45a3	689	* np_up - a network protocol has come up.
dirkx	0:a259777c45a3	690	*/
dirkx	0:a259777c45a3	691	void
dirkx	0:a259777c45a3	692	np_up(int unit, u16_t proto)
dirkx	0:a259777c45a3	693	{
dirkx	0:a259777c45a3	694	LWIP_UNUSED_ARG(unit);
dirkx	0:a259777c45a3	695	LWIP_UNUSED_ARG(proto);
dirkx	0:a259777c45a3	696
dirkx	0:a259777c45a3	697	AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
dirkx	0:a259777c45a3	698	if (num_np_up == 0) {
dirkx	0:a259777c45a3	699	AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
dirkx	0:a259777c45a3	700	/*
dirkx	0:a259777c45a3	701	* At this point we consider that the link has come up successfully.
dirkx	0:a259777c45a3	702	*/
dirkx	0:a259777c45a3	703	if (ppp_settings.idle_time_limit > 0) {
dirkx	0:a259777c45a3	704	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
dirkx	0:a259777c45a3	705	}
dirkx	0:a259777c45a3	706
dirkx	0:a259777c45a3	707	/*
dirkx	0:a259777c45a3	708	* Set a timeout to close the connection once the maximum
dirkx	0:a259777c45a3	709	* connect time has expired.
dirkx	0:a259777c45a3	710	*/
dirkx	0:a259777c45a3	711	if (ppp_settings.maxconnect > 0) {
dirkx	0:a259777c45a3	712	TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
dirkx	0:a259777c45a3	713	}
dirkx	0:a259777c45a3	714	}
dirkx	0:a259777c45a3	715	++num_np_up;
dirkx	0:a259777c45a3	716	}
dirkx	0:a259777c45a3	717
dirkx	0:a259777c45a3	718	/*
dirkx	0:a259777c45a3	719	* np_down - a network protocol has gone down.
dirkx	0:a259777c45a3	720	*/
dirkx	0:a259777c45a3	721	void
dirkx	0:a259777c45a3	722	np_down(int unit, u16_t proto)
dirkx	0:a259777c45a3	723	{
dirkx	0:a259777c45a3	724	LWIP_UNUSED_ARG(unit);
dirkx	0:a259777c45a3	725	LWIP_UNUSED_ARG(proto);
dirkx	0:a259777c45a3	726
dirkx	0:a259777c45a3	727	AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
dirkx	0:a259777c45a3	728	if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
dirkx	0:a259777c45a3	729	UNTIMEOUT(check_idle, NULL);
dirkx	0:a259777c45a3	730	}
dirkx	0:a259777c45a3	731	}
dirkx	0:a259777c45a3	732
dirkx	0:a259777c45a3	733	/*
dirkx	0:a259777c45a3	734	* np_finished - a network protocol has finished using the link.
dirkx	0:a259777c45a3	735	*/
dirkx	0:a259777c45a3	736	void
dirkx	0:a259777c45a3	737	np_finished(int unit, u16_t proto)
dirkx	0:a259777c45a3	738	{
dirkx	0:a259777c45a3	739	LWIP_UNUSED_ARG(unit);
dirkx	0:a259777c45a3	740	LWIP_UNUSED_ARG(proto);
dirkx	0:a259777c45a3	741
dirkx	0:a259777c45a3	742	AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
dirkx	0:a259777c45a3	743	if (--num_np_open <= 0) {
dirkx	0:a259777c45a3	744	/* no further use for the link: shut up shop. */
dirkx	0:a259777c45a3	745	lcp_close(0, "No network protocols running");
dirkx	0:a259777c45a3	746	}
dirkx	0:a259777c45a3	747	}
dirkx	0:a259777c45a3	748
dirkx	0:a259777c45a3	749	/*
dirkx	0:a259777c45a3	750	* check_idle - check whether the link has been idle for long
dirkx	0:a259777c45a3	751	* enough that we can shut it down.
dirkx	0:a259777c45a3	752	*/
dirkx	0:a259777c45a3	753	static void
dirkx	0:a259777c45a3	754	check_idle(void *arg)
dirkx	0:a259777c45a3	755	{
dirkx	0:a259777c45a3	756	struct ppp_idle idle;
dirkx	0:a259777c45a3	757	u_short itime;
dirkx	0:a259777c45a3	758
dirkx	0:a259777c45a3	759	LWIP_UNUSED_ARG(arg);
dirkx	0:a259777c45a3	760	if (!get_idle_time(0, &idle)) {
dirkx	0:a259777c45a3	761	return;
dirkx	0:a259777c45a3	762	}
dirkx	0:a259777c45a3	763	itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
dirkx	0:a259777c45a3	764	if (itime >= ppp_settings.idle_time_limit) {
dirkx	0:a259777c45a3	765	/* link is idle: shut it down. */
dirkx	0:a259777c45a3	766	AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
dirkx	0:a259777c45a3	767	lcp_close(0, "Link inactive");
dirkx	0:a259777c45a3	768	} else {
dirkx	0:a259777c45a3	769	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
dirkx	0:a259777c45a3	770	}
dirkx	0:a259777c45a3	771	}
dirkx	0:a259777c45a3	772
dirkx	0:a259777c45a3	773	/*
dirkx	0:a259777c45a3	774	* connect_time_expired - log a message and close the connection.
dirkx	0:a259777c45a3	775	*/
dirkx	0:a259777c45a3	776	static void
dirkx	0:a259777c45a3	777	connect_time_expired(void *arg)
dirkx	0:a259777c45a3	778	{
dirkx	0:a259777c45a3	779	LWIP_UNUSED_ARG(arg);
dirkx	0:a259777c45a3	780
dirkx	0:a259777c45a3	781	AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
dirkx	0:a259777c45a3	782	lcp_close(0, "Connect time expired"); /* Close connection */
dirkx	0:a259777c45a3	783	}
dirkx	0:a259777c45a3	784
dirkx	0:a259777c45a3	785	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	786	/*
dirkx	0:a259777c45a3	787	* auth_check_options - called to check authentication options.
dirkx	0:a259777c45a3	788	*/
dirkx	0:a259777c45a3	789	void
dirkx	0:a259777c45a3	790	auth_check_options(void)
dirkx	0:a259777c45a3	791	{
dirkx	0:a259777c45a3	792	lcp_options *wo = &lcp_wantoptions[0];
dirkx	0:a259777c45a3	793	int can_auth;
dirkx	0:a259777c45a3	794	ipcp_options *ipwo = &ipcp_wantoptions[0];
dirkx	0:a259777c45a3	795	u32_t remote;
dirkx	0:a259777c45a3	796
dirkx	0:a259777c45a3	797	/* Default our_name to hostname, and user to our_name */
dirkx	0:a259777c45a3	798	if (ppp_settings.our_name[0] == 0 \|\| ppp_settings.usehostname) {
dirkx	0:a259777c45a3	799	strcpy(ppp_settings.our_name, ppp_settings.hostname);
dirkx	0:a259777c45a3	800	}
dirkx	0:a259777c45a3	801
dirkx	0:a259777c45a3	802	if (ppp_settings.user[0] == 0) {
dirkx	0:a259777c45a3	803	strcpy(ppp_settings.user, ppp_settings.our_name);
dirkx	0:a259777c45a3	804	}
dirkx	0:a259777c45a3	805
dirkx	0:a259777c45a3	806	/* If authentication is required, ask peer for CHAP or PAP. */
dirkx	0:a259777c45a3	807	if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
dirkx	0:a259777c45a3	808	wo->neg_chap = 1;
dirkx	0:a259777c45a3	809	wo->neg_upap = 1;
dirkx	0:a259777c45a3	810	}
dirkx	0:a259777c45a3	811
dirkx	0:a259777c45a3	812	/*
dirkx	0:a259777c45a3	813	* Check whether we have appropriate secrets to use
dirkx	0:a259777c45a3	814	* to authenticate the peer.
dirkx	0:a259777c45a3	815	*/
dirkx	0:a259777c45a3	816	can_auth = wo->neg_upap && have_pap_secret();
dirkx	0:a259777c45a3	817	if (!can_auth && wo->neg_chap) {
dirkx	0:a259777c45a3	818	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
dirkx	0:a259777c45a3	819	can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
dirkx	0:a259777c45a3	820	}
dirkx	0:a259777c45a3	821
dirkx	0:a259777c45a3	822	if (ppp_settings.auth_required && !can_auth) {
dirkx	0:a259777c45a3	823	ppp_panic("No auth secret");
dirkx	0:a259777c45a3	824	}
dirkx	0:a259777c45a3	825	}
dirkx	0:a259777c45a3	826	#endif /* UNUSED */
dirkx	0:a259777c45a3	827
dirkx	0:a259777c45a3	828	/*
dirkx	0:a259777c45a3	829	* auth_reset - called when LCP is starting negotiations to recheck
dirkx	0:a259777c45a3	830	* authentication options, i.e. whether we have appropriate secrets
dirkx	0:a259777c45a3	831	* to use for authenticating ourselves and/or the peer.
dirkx	0:a259777c45a3	832	*/
dirkx	0:a259777c45a3	833	void
dirkx	0:a259777c45a3	834	auth_reset(int unit)
dirkx	0:a259777c45a3	835	{
dirkx	0:a259777c45a3	836	lcp_options *go = &lcp_gotoptions[unit];
dirkx	0:a259777c45a3	837	lcp_options *ao = &lcp_allowoptions[0];
dirkx	0:a259777c45a3	838	ipcp_options *ipwo = &ipcp_wantoptions[0];
dirkx	0:a259777c45a3	839	u32_t remote;
dirkx	0:a259777c45a3	840
dirkx	0:a259777c45a3	841	AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
dirkx	0:a259777c45a3	842	ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 \|\| get_pap_passwd(unit, NULL, NULL));
dirkx	0:a259777c45a3	843	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)/;
dirkx	0:a259777c45a3	844
dirkx	0:a259777c45a3	845	if (go->neg_upap && !have_pap_secret()) {
dirkx	0:a259777c45a3	846	go->neg_upap = 0;
dirkx	0:a259777c45a3	847	}
dirkx	0:a259777c45a3	848	if (go->neg_chap) {
dirkx	0:a259777c45a3	849	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
dirkx	0:a259777c45a3	850	if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
dirkx	0:a259777c45a3	851	go->neg_chap = 0;
dirkx	0:a259777c45a3	852	}
dirkx	0:a259777c45a3	853	}
dirkx	0:a259777c45a3	854	}
dirkx	0:a259777c45a3	855
dirkx	0:a259777c45a3	856	#if PAP_SUPPORT
dirkx	0:a259777c45a3	857	/*
dirkx	0:a259777c45a3	858	* check_passwd - Check the user name and passwd against the PAP secrets
dirkx	0:a259777c45a3	859	* file. If requested, also check against the system password database,
dirkx	0:a259777c45a3	860	* and login the user if OK.
dirkx	0:a259777c45a3	861	*
dirkx	0:a259777c45a3	862	* returns:
dirkx	0:a259777c45a3	863	* UPAP_AUTHNAK: Authentication failed.
dirkx	0:a259777c45a3	864	* UPAP_AUTHACK: Authentication succeeded.
dirkx	0:a259777c45a3	865	* In either case, msg points to an appropriate message.
dirkx	0:a259777c45a3	866	*/
dirkx	0:a259777c45a3	867	u_char
dirkx	0:a259777c45a3	868	check_passwd( int unit, char auser, int userlen, char apasswd, int passwdlen, char *msg, int msglen)
dirkx	0:a259777c45a3	869	{
dirkx	0:a259777c45a3	870	#if 1 /* XXX Assume all entries OK. */
dirkx	0:a259777c45a3	871	LWIP_UNUSED_ARG(unit);
dirkx	0:a259777c45a3	872	LWIP_UNUSED_ARG(auser);
dirkx	0:a259777c45a3	873	LWIP_UNUSED_ARG(userlen);
dirkx	0:a259777c45a3	874	LWIP_UNUSED_ARG(apasswd);
dirkx	0:a259777c45a3	875	LWIP_UNUSED_ARG(passwdlen);
dirkx	0:a259777c45a3	876	LWIP_UNUSED_ARG(msglen);
dirkx	0:a259777c45a3	877	msg = (char ) 0;
dirkx	0:a259777c45a3	878	return UPAP_AUTHACK; /* XXX Assume all entries OK. */
dirkx	0:a259777c45a3	879	#else
dirkx	0:a259777c45a3	880	u_char ret = 0;
dirkx	0:a259777c45a3	881	struct wordlist *addrs = NULL;
dirkx	0:a259777c45a3	882	char passwd[256], user[256];
dirkx	0:a259777c45a3	883	char secret[MAXWORDLEN];
dirkx	0:a259777c45a3	884	static u_short attempts = 0;
dirkx	0:a259777c45a3	885
dirkx	0:a259777c45a3	886	/*
dirkx	0:a259777c45a3	887	* Make copies of apasswd and auser, then null-terminate them.
dirkx	0:a259777c45a3	888	*/
dirkx	0:a259777c45a3	889	BCOPY(apasswd, passwd, passwdlen);
dirkx	0:a259777c45a3	890	passwd[passwdlen] = '\0';
dirkx	0:a259777c45a3	891	BCOPY(auser, user, userlen);
dirkx	0:a259777c45a3	892	user[userlen] = '\0';
dirkx	0:a259777c45a3	893	msg = (char ) 0;
dirkx	0:a259777c45a3	894
dirkx	0:a259777c45a3	895	/* XXX Validate user name and password. */
dirkx	0:a259777c45a3	896	ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
dirkx	0:a259777c45a3	897
dirkx	0:a259777c45a3	898	if (ret == UPAP_AUTHNAK) {
dirkx	0:a259777c45a3	899	if (msg == (char ) 0) {
dirkx	0:a259777c45a3	900	*msg = "Login incorrect";
dirkx	0:a259777c45a3	901	}
dirkx	0:a259777c45a3	902	msglen = strlen(msg);
dirkx	0:a259777c45a3	903	/*
dirkx	0:a259777c45a3	904	* Frustrate passwd stealer programs.
dirkx	0:a259777c45a3	905	* Allow 10 tries, but start backing off after 3 (stolen from login).
dirkx	0:a259777c45a3	906	* On 10'th, drop the connection.
dirkx	0:a259777c45a3	907	*/
dirkx	0:a259777c45a3	908	if (attempts++ >= 10) {
dirkx	0:a259777c45a3	909	AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
dirkx	0:a259777c45a3	910	/ppp_panic("Excess Bad Logins");/
dirkx	0:a259777c45a3	911	}
dirkx	0:a259777c45a3	912	if (attempts > 3) {
dirkx	0:a259777c45a3	913	/* @todo: this was sleep(), i.e. seconds, not milliseconds
dirkx	0:a259777c45a3	914	* I don't think we really need this in lwIP - we would block tcpip_thread!
dirkx	0:a259777c45a3	915	*/
dirkx	0:a259777c45a3	916	/sys_msleep((attempts - 3) 5);*/
dirkx	0:a259777c45a3	917	}
dirkx	0:a259777c45a3	918	if (addrs != NULL) {
dirkx	0:a259777c45a3	919	free_wordlist(addrs);
dirkx	0:a259777c45a3	920	}
dirkx	0:a259777c45a3	921	} else {
dirkx	0:a259777c45a3	922	attempts = 0; /* Reset count */
dirkx	0:a259777c45a3	923	if (msg == (char ) 0) {
dirkx	0:a259777c45a3	924	*msg = "Login ok";
dirkx	0:a259777c45a3	925	}
dirkx	0:a259777c45a3	926	msglen = strlen(msg);
dirkx	0:a259777c45a3	927	set_allowed_addrs(unit, addrs);
dirkx	0:a259777c45a3	928	}
dirkx	0:a259777c45a3	929
dirkx	0:a259777c45a3	930	BZERO(passwd, sizeof(passwd));
dirkx	0:a259777c45a3	931	BZERO(secret, sizeof(secret));
dirkx	0:a259777c45a3	932
dirkx	0:a259777c45a3	933	return ret;
dirkx	0:a259777c45a3	934	#endif
dirkx	0:a259777c45a3	935	}
dirkx	0:a259777c45a3	936	#endif /* PAP_SUPPORT */
dirkx	0:a259777c45a3	937
dirkx	0:a259777c45a3	938	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	939	/*
dirkx	0:a259777c45a3	940	* This function is needed for PAM.
dirkx	0:a259777c45a3	941	*/
dirkx	0:a259777c45a3	942
dirkx	0:a259777c45a3	943	#ifdef USE_PAM
dirkx	0:a259777c45a3	944
dirkx	0:a259777c45a3	945	/* lwip does not support PAM*/
dirkx	0:a259777c45a3	946
dirkx	0:a259777c45a3	947	#endif /* USE_PAM */
dirkx	0:a259777c45a3	948
dirkx	0:a259777c45a3	949	#endif /* UNUSED */
dirkx	0:a259777c45a3	950
dirkx	0:a259777c45a3	951
dirkx	0:a259777c45a3	952	#if 0 /* UNUSED */
dirkx	0:a259777c45a3	953	/*
dirkx	0:a259777c45a3	954	* plogin - Check the user name and password against the system
dirkx	0:a259777c45a3	955	* password database, and login the user if OK.
dirkx	0:a259777c45a3	956	*
dirkx	0:a259777c45a3	957	* returns:
dirkx	0:a259777c45a3	958	* UPAP_AUTHNAK: Login failed.
dirkx	0:a259777c45a3	959	* UPAP_AUTHACK: Login succeeded.
dirkx	0:a259777c45a3	960	* In either case, msg points to an appropriate message.
dirkx	0:a259777c45a3	961	*/
dirkx	0:a259777c45a3	962	static int
dirkx	0:a259777c45a3	963	plogin(char user, char passwd, char *msg, int msglen)
dirkx	0:a259777c45a3	964	{
dirkx	0:a259777c45a3	965
dirkx	0:a259777c45a3	966	LWIP_UNUSED_ARG(user);
dirkx	0:a259777c45a3	967	LWIP_UNUSED_ARG(passwd);
dirkx	0:a259777c45a3	968	LWIP_UNUSED_ARG(msg);
dirkx	0:a259777c45a3	969	LWIP_UNUSED_ARG(msglen);
dirkx	0:a259777c45a3	970
dirkx	0:a259777c45a3	971
dirkx	0:a259777c45a3	972	/* The new lines are here align the file when
dirkx	0:a259777c45a3	973	* compared against the pppd 2.3.11 code */
dirkx	0:a259777c45a3	974
dirkx	0:a259777c45a3	975
dirkx	0:a259777c45a3	976
dirkx	0:a259777c45a3	977
dirkx	0:a259777c45a3	978
dirkx	0:a259777c45a3	979
dirkx	0:a259777c45a3	980
dirkx	0:a259777c45a3	981
dirkx	0:a259777c45a3	982
dirkx	0:a259777c45a3	983
dirkx	0:a259777c45a3	984
dirkx	0:a259777c45a3	985
dirkx	0:a259777c45a3	986
dirkx	0:a259777c45a3	987
dirkx	0:a259777c45a3	988
dirkx	0:a259777c45a3	989
dirkx	0:a259777c45a3	990	/* XXX Fail until we decide that we want to support logins. */
dirkx	0:a259777c45a3	991	return (UPAP_AUTHNAK);
dirkx	0:a259777c45a3	992	}
dirkx	0:a259777c45a3	993	#endif
dirkx	0:a259777c45a3	994
dirkx	0:a259777c45a3	995
dirkx	0:a259777c45a3	996
dirkx	0:a259777c45a3	997	/*
dirkx	0:a259777c45a3	998	* plogout - Logout the user.
dirkx	0:a259777c45a3	999	*/
dirkx	0:a259777c45a3	1000	static void
dirkx	0:a259777c45a3	1001	plogout(void)
dirkx	0:a259777c45a3	1002	{
dirkx	0:a259777c45a3	1003	logged_in = 0;
dirkx	0:a259777c45a3	1004	}
dirkx	0:a259777c45a3	1005
dirkx	0:a259777c45a3	1006	/*
dirkx	0:a259777c45a3	1007	* null_login - Check if a username of "" and a password of "" are
dirkx	0:a259777c45a3	1008	* acceptable, and iff so, set the list of acceptable IP addresses
dirkx	0:a259777c45a3	1009	* and return 1.
dirkx	0:a259777c45a3	1010	*/
dirkx	0:a259777c45a3	1011	static int
dirkx	0:a259777c45a3	1012	null_login(int unit)
dirkx	0:a259777c45a3	1013	{
dirkx	0:a259777c45a3	1014	LWIP_UNUSED_ARG(unit);
dirkx	0:a259777c45a3	1015	/* XXX Fail until we decide that we want to support logins. */
dirkx	0:a259777c45a3	1016	return 0;
dirkx	0:a259777c45a3	1017	}
dirkx	0:a259777c45a3	1018
dirkx	0:a259777c45a3	1019
dirkx	0:a259777c45a3	1020	/*
dirkx	0:a259777c45a3	1021	* get_pap_passwd - get a password for authenticating ourselves with
dirkx	0:a259777c45a3	1022	* our peer using PAP. Returns 1 on success, 0 if no suitable password
dirkx	0:a259777c45a3	1023	* could be found.
dirkx	0:a259777c45a3	1024	*/
dirkx	0:a259777c45a3	1025	static int
dirkx	0:a259777c45a3	1026	get_pap_passwd(int unit, char user, char passwd)
dirkx	0:a259777c45a3	1027	{
dirkx	0:a259777c45a3	1028	LWIP_UNUSED_ARG(unit);
dirkx	0:a259777c45a3	1029	/* normally we would reject PAP if no password is provided,
dirkx	0:a259777c45a3	1030	but this causes problems with some providers (like CHT in Taiwan)
dirkx	0:a259777c45a3	1031	who incorrectly request PAP and expect a bogus/empty password, so
dirkx	0:a259777c45a3	1032	always provide a default user/passwd of "none"/"none"
dirkx	0:a259777c45a3	1033
dirkx	0:a259777c45a3	1034	@todo: This should be configured by the user, instead of being hardcoded here!
dirkx	0:a259777c45a3	1035	*/
dirkx	0:a259777c45a3	1036	if(user) {
dirkx	0:a259777c45a3	1037	strcpy(user, "none");
dirkx	0:a259777c45a3	1038	}
dirkx	0:a259777c45a3	1039	if(passwd) {
dirkx	0:a259777c45a3	1040	strcpy(passwd, "none");
dirkx	0:a259777c45a3	1041	}
dirkx	0:a259777c45a3	1042	return 1;
dirkx	0:a259777c45a3	1043	}
dirkx	0:a259777c45a3	1044
dirkx	0:a259777c45a3	1045	/*
dirkx	0:a259777c45a3	1046	* have_pap_secret - check whether we have a PAP file with any
dirkx	0:a259777c45a3	1047	* secrets that we could possibly use for authenticating the peer.
dirkx	0:a259777c45a3	1048	*/
dirkx	0:a259777c45a3	1049	static int
dirkx	0:a259777c45a3	1050	have_pap_secret(void)
dirkx	0:a259777c45a3	1051	{
dirkx	0:a259777c45a3	1052	/* XXX Fail until we set up our passwords. */
dirkx	0:a259777c45a3	1053	return 0;
dirkx	0:a259777c45a3	1054	}
dirkx	0:a259777c45a3	1055
dirkx	0:a259777c45a3	1056	/*
dirkx	0:a259777c45a3	1057	* have_chap_secret - check whether we have a CHAP file with a
dirkx	0:a259777c45a3	1058	* secret that we could possibly use for authenticating `client'
dirkx	0:a259777c45a3	1059	* on `server'. Either can be the null string, meaning we don't
dirkx	0:a259777c45a3	1060	* know the identity yet.
dirkx	0:a259777c45a3	1061	*/
dirkx	0:a259777c45a3	1062	static int
dirkx	0:a259777c45a3	1063	have_chap_secret(char client, char server, u32_t remote)
dirkx	0:a259777c45a3	1064	{
dirkx	0:a259777c45a3	1065	LWIP_UNUSED_ARG(client);
dirkx	0:a259777c45a3	1066	LWIP_UNUSED_ARG(server);
dirkx	0:a259777c45a3	1067	LWIP_UNUSED_ARG(remote);
dirkx	0:a259777c45a3	1068
dirkx	0:a259777c45a3	1069	/* XXX Fail until we set up our passwords. */
dirkx	0:a259777c45a3	1070	return 0;
dirkx	0:a259777c45a3	1071	}
dirkx	0:a259777c45a3	1072	#if CHAP_SUPPORT
dirkx	0:a259777c45a3	1073
dirkx	0:a259777c45a3	1074	/*
dirkx	0:a259777c45a3	1075	* get_secret - open the CHAP secret file and return the secret
dirkx	0:a259777c45a3	1076	* for authenticating the given client on the given server.
dirkx	0:a259777c45a3	1077	* (We could be either client or server).
dirkx	0:a259777c45a3	1078	*/
dirkx	0:a259777c45a3	1079	int
dirkx	0:a259777c45a3	1080	get_secret(int unit, char client, char server, char secret, int secret_len, int save_addrs)
dirkx	0:a259777c45a3	1081	{
dirkx	0:a259777c45a3	1082	#if 1
dirkx	0:a259777c45a3	1083	int len;
dirkx	0:a259777c45a3	1084	struct wordlist *addrs;
dirkx	0:a259777c45a3	1085
dirkx	0:a259777c45a3	1086	LWIP_UNUSED_ARG(unit);
dirkx	0:a259777c45a3	1087	LWIP_UNUSED_ARG(server);
dirkx	0:a259777c45a3	1088	LWIP_UNUSED_ARG(save_addrs);
dirkx	0:a259777c45a3	1089
dirkx	0:a259777c45a3	1090	addrs = NULL;
dirkx	0:a259777c45a3	1091
dirkx	0:a259777c45a3	1092	if(!client \|\| !client[0] \|\| strcmp(client, ppp_settings.user)) {
dirkx	0:a259777c45a3	1093	return 0;
dirkx	0:a259777c45a3	1094	}
dirkx	0:a259777c45a3	1095
dirkx	0:a259777c45a3	1096	len = (int)strlen(ppp_settings.passwd);
dirkx	0:a259777c45a3	1097	if (len > MAXSECRETLEN) {
dirkx	0:a259777c45a3	1098	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
dirkx	0:a259777c45a3	1099	len = MAXSECRETLEN;
dirkx	0:a259777c45a3	1100	}
dirkx	0:a259777c45a3	1101
dirkx	0:a259777c45a3	1102	BCOPY(ppp_settings.passwd, secret, len);
dirkx	0:a259777c45a3	1103	*secret_len = len;
dirkx	0:a259777c45a3	1104
dirkx	0:a259777c45a3	1105	return 1;
dirkx	0:a259777c45a3	1106	#else
dirkx	0:a259777c45a3	1107	int ret = 0, len;
dirkx	0:a259777c45a3	1108	struct wordlist *addrs;
dirkx	0:a259777c45a3	1109	char secbuf[MAXWORDLEN];
dirkx	0:a259777c45a3	1110
dirkx	0:a259777c45a3	1111	addrs = NULL;
dirkx	0:a259777c45a3	1112	secbuf[0] = 0;
dirkx	0:a259777c45a3	1113
dirkx	0:a259777c45a3	1114	/* XXX Find secret. */
dirkx	0:a259777c45a3	1115	if (ret < 0) {
dirkx	0:a259777c45a3	1116	return 0;
dirkx	0:a259777c45a3	1117	}
dirkx	0:a259777c45a3	1118
dirkx	0:a259777c45a3	1119	if (save_addrs) {
dirkx	0:a259777c45a3	1120	set_allowed_addrs(unit, addrs);
dirkx	0:a259777c45a3	1121	}
dirkx	0:a259777c45a3	1122
dirkx	0:a259777c45a3	1123	len = strlen(secbuf);
dirkx	0:a259777c45a3	1124	if (len > MAXSECRETLEN) {
dirkx	0:a259777c45a3	1125	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
dirkx	0:a259777c45a3	1126	len = MAXSECRETLEN;
dirkx	0:a259777c45a3	1127	}
dirkx	0:a259777c45a3	1128
dirkx	0:a259777c45a3	1129	BCOPY(secbuf, secret, len);
dirkx	0:a259777c45a3	1130	BZERO(secbuf, sizeof(secbuf));
dirkx	0:a259777c45a3	1131	*secret_len = len;
dirkx	0:a259777c45a3	1132
dirkx	0:a259777c45a3	1133	return 1;
dirkx	0:a259777c45a3	1134	#endif
dirkx	0:a259777c45a3	1135	}
dirkx	0:a259777c45a3	1136	#endif /* CHAP_SUPPORT */
dirkx	0:a259777c45a3	1137
dirkx	0:a259777c45a3	1138
dirkx	0:a259777c45a3	1139	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	1140	/*
dirkx	0:a259777c45a3	1141	* set_allowed_addrs() - set the list of allowed addresses.
dirkx	0:a259777c45a3	1142	*/
dirkx	0:a259777c45a3	1143	static void
dirkx	0:a259777c45a3	1144	set_allowed_addrs(int unit, struct wordlist *addrs)
dirkx	0:a259777c45a3	1145	{
dirkx	0:a259777c45a3	1146	if (addresses[unit] != NULL) {
dirkx	0:a259777c45a3	1147	free_wordlist(addresses[unit]);
dirkx	0:a259777c45a3	1148	}
dirkx	0:a259777c45a3	1149	addresses[unit] = addrs;
dirkx	0:a259777c45a3	1150
dirkx	0:a259777c45a3	1151	#if 0
dirkx	0:a259777c45a3	1152	/*
dirkx	0:a259777c45a3	1153	* If there's only one authorized address we might as well
dirkx	0:a259777c45a3	1154	* ask our peer for that one right away
dirkx	0:a259777c45a3	1155	*/
dirkx	0:a259777c45a3	1156	if (addrs != NULL && addrs->next == NULL) {
dirkx	0:a259777c45a3	1157	char *p = addrs->word;
dirkx	0:a259777c45a3	1158	struct ipcp_options *wo = &ipcp_wantoptions[unit];
dirkx	0:a259777c45a3	1159	u32_t a;
dirkx	0:a259777c45a3	1160	struct hostent *hp;
dirkx	0:a259777c45a3	1161
dirkx	0:a259777c45a3	1162	if (wo->hisaddr == 0 && p != '!' && p != '-' && strchr(p, '/') == NULL) {
dirkx	0:a259777c45a3	1163	hp = gethostbyname(p);
dirkx	0:a259777c45a3	1164	if (hp != NULL && hp->h_addrtype == AF_INET) {
dirkx	0:a259777c45a3	1165	a = (u32_t )hp->h_addr;
dirkx	0:a259777c45a3	1166	} else {
dirkx	0:a259777c45a3	1167	a = inet_addr(p);
dirkx	0:a259777c45a3	1168	}
dirkx	0:a259777c45a3	1169	if (a != (u32_t) -1) {
dirkx	0:a259777c45a3	1170	wo->hisaddr = a;
dirkx	0:a259777c45a3	1171	}
dirkx	0:a259777c45a3	1172	}
dirkx	0:a259777c45a3	1173	}
dirkx	0:a259777c45a3	1174	#endif
dirkx	0:a259777c45a3	1175	}
dirkx	0:a259777c45a3	1176	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	1177
dirkx	0:a259777c45a3	1178	/*
dirkx	0:a259777c45a3	1179	* auth_ip_addr - check whether the peer is authorized to use
dirkx	0:a259777c45a3	1180	* a given IP address. Returns 1 if authorized, 0 otherwise.
dirkx	0:a259777c45a3	1181	*/
dirkx	0:a259777c45a3	1182	int
dirkx	0:a259777c45a3	1183	auth_ip_addr(int unit, u32_t addr)
dirkx	0:a259777c45a3	1184	{
dirkx	0:a259777c45a3	1185	return ip_addr_check(addr, addresses[unit]);
dirkx	0:a259777c45a3	1186	}
dirkx	0:a259777c45a3	1187
dirkx	0:a259777c45a3	1188	static int /* @todo: integrate this funtion into auth_ip_addr()*/
dirkx	0:a259777c45a3	1189	ip_addr_check(u32_t addr, struct wordlist *addrs)
dirkx	0:a259777c45a3	1190	{
dirkx	0:a259777c45a3	1191	/* don't allow loopback or multicast address */
dirkx	0:a259777c45a3	1192	if (bad_ip_adrs(addr)) {
dirkx	0:a259777c45a3	1193	return 0;
dirkx	0:a259777c45a3	1194	}
dirkx	0:a259777c45a3	1195
dirkx	0:a259777c45a3	1196	if (addrs == NULL) {
dirkx	0:a259777c45a3	1197	return !ppp_settings.auth_required; /* no addresses authorized */
dirkx	0:a259777c45a3	1198	}
dirkx	0:a259777c45a3	1199
dirkx	0:a259777c45a3	1200	/* XXX All other addresses allowed. */
dirkx	0:a259777c45a3	1201	return 1;
dirkx	0:a259777c45a3	1202	}
dirkx	0:a259777c45a3	1203
dirkx	0:a259777c45a3	1204	/*
dirkx	0:a259777c45a3	1205	* bad_ip_adrs - return 1 if the IP address is one we don't want
dirkx	0:a259777c45a3	1206	* to use, such as an address in the loopback net or a multicast address.
dirkx	0:a259777c45a3	1207	* addr is in network byte order.
dirkx	0:a259777c45a3	1208	*/
dirkx	0:a259777c45a3	1209	int
dirkx	0:a259777c45a3	1210	bad_ip_adrs(u32_t addr)
dirkx	0:a259777c45a3	1211	{
dirkx	0:a259777c45a3	1212	addr = ntohl(addr);
dirkx	0:a259777c45a3	1213	return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
dirkx	0:a259777c45a3	1214	\|\| IN_MULTICAST(addr) \|\| IN_BADCLASS(addr);
dirkx	0:a259777c45a3	1215	}
dirkx	0:a259777c45a3	1216
dirkx	0:a259777c45a3	1217	#if 0 /* UNUSED / / PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	1218	/*
dirkx	0:a259777c45a3	1219	* some_ip_ok - check a wordlist to see if it authorizes any
dirkx	0:a259777c45a3	1220	* IP address(es).
dirkx	0:a259777c45a3	1221	*/
dirkx	0:a259777c45a3	1222	static int
dirkx	0:a259777c45a3	1223	some_ip_ok(struct wordlist *addrs)
dirkx	0:a259777c45a3	1224	{
dirkx	0:a259777c45a3	1225	for (; addrs != 0; addrs = addrs->next) {
dirkx	0:a259777c45a3	1226	if (addrs->word[0] == '-')
dirkx	0:a259777c45a3	1227	break;
dirkx	0:a259777c45a3	1228	if (addrs->word[0] != '!')
dirkx	0:a259777c45a3	1229	return 1; /* some IP address is allowed */
dirkx	0:a259777c45a3	1230	}
dirkx	0:a259777c45a3	1231	return 0;
dirkx	0:a259777c45a3	1232	}
dirkx	0:a259777c45a3	1233
dirkx	0:a259777c45a3	1234	/*
dirkx	0:a259777c45a3	1235	* check_access - complain if a secret file has too-liberal permissions.
dirkx	0:a259777c45a3	1236	*/
dirkx	0:a259777c45a3	1237	static void
dirkx	0:a259777c45a3	1238	check_access(FILE f, char filename)
dirkx	0:a259777c45a3	1239	{
dirkx	0:a259777c45a3	1240	struct stat sbuf;
dirkx	0:a259777c45a3	1241
dirkx	0:a259777c45a3	1242	if (fstat(fileno(f), &sbuf) < 0) {
dirkx	0:a259777c45a3	1243	warn("cannot stat secret file %s: %m", filename);
dirkx	0:a259777c45a3	1244	} else if ((sbuf.st_mode & (S_IRWXG \| S_IRWXO)) != 0) {
dirkx	0:a259777c45a3	1245	warn("Warning - secret file %s has world and/or group access",
dirkx	0:a259777c45a3	1246	filename);
dirkx	0:a259777c45a3	1247	}
dirkx	0:a259777c45a3	1248	}
dirkx	0:a259777c45a3	1249
dirkx	0:a259777c45a3	1250
dirkx	0:a259777c45a3	1251	/*
dirkx	0:a259777c45a3	1252	* scan_authfile - Scan an authorization file for a secret suitable
dirkx	0:a259777c45a3	1253	* for authenticating `client' on `server'. The return value is -1
dirkx	0:a259777c45a3	1254	* if no secret is found, otherwise >= 0. The return value has
dirkx	0:a259777c45a3	1255	* NONWILD_CLIENT set if the secret didn't have "*" for the client, and
dirkx	0:a259777c45a3	1256	* NONWILD_SERVER set if the secret didn't have "*" for the server.
dirkx	0:a259777c45a3	1257	* Any following words on the line up to a "--" (i.e. address authorization
dirkx	0:a259777c45a3	1258	* info) are placed in a wordlist and returned in *addrs. Any
dirkx	0:a259777c45a3	1259	* following words (extra options) are placed in a wordlist and
dirkx	0:a259777c45a3	1260	* returned in *opts.
dirkx	0:a259777c45a3	1261	* We assume secret is NULL or points to MAXWORDLEN bytes of space.
dirkx	0:a259777c45a3	1262	*/
dirkx	0:a259777c45a3	1263	static int
dirkx	0:a259777c45a3	1264	scan_authfile(FILE f, char client, char server, char secret, struct wordlist addrs, struct wordlist opts, char *filename)
dirkx	0:a259777c45a3	1265	{
dirkx	0:a259777c45a3	1266	/* We do not (currently) need this in lwip */
dirkx	0:a259777c45a3	1267	return 0; /* dummy */
dirkx	0:a259777c45a3	1268	}
dirkx	0:a259777c45a3	1269	/*
dirkx	0:a259777c45a3	1270	* free_wordlist - release memory allocated for a wordlist.
dirkx	0:a259777c45a3	1271	*/
dirkx	0:a259777c45a3	1272	static void
dirkx	0:a259777c45a3	1273	free_wordlist(struct wordlist *wp)
dirkx	0:a259777c45a3	1274	{
dirkx	0:a259777c45a3	1275	struct wordlist *next;
dirkx	0:a259777c45a3	1276
dirkx	0:a259777c45a3	1277	while (wp != NULL) {
dirkx	0:a259777c45a3	1278	next = wp->next;
dirkx	0:a259777c45a3	1279	free(wp);
dirkx	0:a259777c45a3	1280	wp = next;
dirkx	0:a259777c45a3	1281	}
dirkx	0:a259777c45a3	1282	}
dirkx	0:a259777c45a3	1283
dirkx	0:a259777c45a3	1284	/*
dirkx	0:a259777c45a3	1285	* auth_script_done - called when the auth-up or auth-down script
dirkx	0:a259777c45a3	1286	* has finished.
dirkx	0:a259777c45a3	1287	*/
dirkx	0:a259777c45a3	1288	static void
dirkx	0:a259777c45a3	1289	auth_script_done(void *arg)
dirkx	0:a259777c45a3	1290	{
dirkx	0:a259777c45a3	1291	auth_script_pid = 0;
dirkx	0:a259777c45a3	1292	switch (auth_script_state) {
dirkx	0:a259777c45a3	1293	case s_up:
dirkx	0:a259777c45a3	1294	if (auth_state == s_down) {
dirkx	0:a259777c45a3	1295	auth_script_state = s_down;
dirkx	0:a259777c45a3	1296	auth_script(_PATH_AUTHDOWN);
dirkx	0:a259777c45a3	1297	}
dirkx	0:a259777c45a3	1298	break;
dirkx	0:a259777c45a3	1299	case s_down:
dirkx	0:a259777c45a3	1300	if (auth_state == s_up) {
dirkx	0:a259777c45a3	1301	auth_script_state = s_up;
dirkx	0:a259777c45a3	1302	auth_script(_PATH_AUTHUP);
dirkx	0:a259777c45a3	1303	}
dirkx	0:a259777c45a3	1304	break;
dirkx	0:a259777c45a3	1305	}
dirkx	0:a259777c45a3	1306	}
dirkx	0:a259777c45a3	1307
dirkx	0:a259777c45a3	1308	/*
dirkx	0:a259777c45a3	1309	* auth_script - execute a script with arguments
dirkx	0:a259777c45a3	1310	* interface-name peer-name real-user tty speed
dirkx	0:a259777c45a3	1311	*/
dirkx	0:a259777c45a3	1312	static void
dirkx	0:a259777c45a3	1313	auth_script(char *script)
dirkx	0:a259777c45a3	1314	{
dirkx	0:a259777c45a3	1315	char strspeed[32];
dirkx	0:a259777c45a3	1316	struct passwd *pw;
dirkx	0:a259777c45a3	1317	char struid[32];
dirkx	0:a259777c45a3	1318	char *user_name;
dirkx	0:a259777c45a3	1319	char *argv[8];
dirkx	0:a259777c45a3	1320
dirkx	0:a259777c45a3	1321	if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
dirkx	0:a259777c45a3	1322	user_name = pw->pw_name;
dirkx	0:a259777c45a3	1323	else {
dirkx	0:a259777c45a3	1324	slprintf(struid, sizeof(struid), "%d", getuid());
dirkx	0:a259777c45a3	1325	user_name = struid;
dirkx	0:a259777c45a3	1326	}
dirkx	0:a259777c45a3	1327	slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
dirkx	0:a259777c45a3	1328
dirkx	0:a259777c45a3	1329	argv[0] = script;
dirkx	0:a259777c45a3	1330	argv[1] = ifname;
dirkx	0:a259777c45a3	1331	argv[2] = peer_authname;
dirkx	0:a259777c45a3	1332	argv[3] = user_name;
dirkx	0:a259777c45a3	1333	argv[4] = devnam;
dirkx	0:a259777c45a3	1334	argv[5] = strspeed;
dirkx	0:a259777c45a3	1335	argv[6] = NULL;
dirkx	0:a259777c45a3	1336
dirkx	0:a259777c45a3	1337	auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
dirkx	0:a259777c45a3	1338	}
dirkx	0:a259777c45a3	1339	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
dirkx	0:a259777c45a3	1340	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	14 Aug 2010
Imports:	49
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	2
Followers:	1

lwip/netif/ppp/auth.c@0:a259777c45a3, 2010-08-14 (annotated)

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