NetServicesSource - Experimental HTTPClient with proxy support

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Experimental HTTPClient with proxy support

lwip/netif/ppp/auth.c@0:b56b6a05cad4, 2011-06-29 (annotated)

Committer:: igorsk
Date:: Wed Jun 29 16:01:58 2011 +0000
Revision:: 0:b56b6a05cad4

Who changed what in which revision?

User	Revision	Line number	New contents of line
igorsk	0:b56b6a05cad4	1	/*****************************************************************************
igorsk	0:b56b6a05cad4	2	* auth.c - Network Authentication and Phase Control program file.
igorsk	0:b56b6a05cad4	3	*
igorsk	0:b56b6a05cad4	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
igorsk	0:b56b6a05cad4	5	* Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
igorsk	0:b56b6a05cad4	6	*
igorsk	0:b56b6a05cad4	7	* The authors hereby grant permission to use, copy, modify, distribute,
igorsk	0:b56b6a05cad4	8	* and license this software and its documentation for any purpose, provided
igorsk	0:b56b6a05cad4	9	* that existing copyright notices are retained in all copies and that this
igorsk	0:b56b6a05cad4	10	* notice and the following disclaimer are included verbatim in any
igorsk	0:b56b6a05cad4	11	* distributions. No written agreement, license, or royalty fee is required
igorsk	0:b56b6a05cad4	12	* for any of the authorized uses.
igorsk	0:b56b6a05cad4	13	*
igorsk	0:b56b6a05cad4	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
igorsk	0:b56b6a05cad4	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
igorsk	0:b56b6a05cad4	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
igorsk	0:b56b6a05cad4	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
igorsk	0:b56b6a05cad4	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
igorsk	0:b56b6a05cad4	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
igorsk	0:b56b6a05cad4	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
igorsk	0:b56b6a05cad4	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
igorsk	0:b56b6a05cad4	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
igorsk	0:b56b6a05cad4	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
igorsk	0:b56b6a05cad4	24	*
igorsk	0:b56b6a05cad4	25	******************************************************************************
igorsk	0:b56b6a05cad4	26	* REVISION HISTORY
igorsk	0:b56b6a05cad4	27	*
igorsk	0:b56b6a05cad4	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
igorsk	0:b56b6a05cad4	29	* Ported to lwIP.
igorsk	0:b56b6a05cad4	30	* 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
igorsk	0:b56b6a05cad4	31	* Ported from public pppd code.
igorsk	0:b56b6a05cad4	32	*****************************************************************************/
igorsk	0:b56b6a05cad4	33	/*
igorsk	0:b56b6a05cad4	34	* auth.c - PPP authentication and phase control.
igorsk	0:b56b6a05cad4	35	*
igorsk	0:b56b6a05cad4	36	* Copyright (c) 1993 The Australian National University.
igorsk	0:b56b6a05cad4	37	* All rights reserved.
igorsk	0:b56b6a05cad4	38	*
igorsk	0:b56b6a05cad4	39	* Redistribution and use in source and binary forms are permitted
igorsk	0:b56b6a05cad4	40	* provided that the above copyright notice and this paragraph are
igorsk	0:b56b6a05cad4	41	* duplicated in all such forms and that any documentation,
igorsk	0:b56b6a05cad4	42	* advertising materials, and other materials related to such
igorsk	0:b56b6a05cad4	43	* distribution and use acknowledge that the software was developed
igorsk	0:b56b6a05cad4	44	* by the Australian National University. The name of the University
igorsk	0:b56b6a05cad4	45	* may not be used to endorse or promote products derived from this
igorsk	0:b56b6a05cad4	46	* software without specific prior written permission.
igorsk	0:b56b6a05cad4	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
igorsk	0:b56b6a05cad4	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
igorsk	0:b56b6a05cad4	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
igorsk	0:b56b6a05cad4	50	*
igorsk	0:b56b6a05cad4	51	* Copyright (c) 1989 Carnegie Mellon University.
igorsk	0:b56b6a05cad4	52	* All rights reserved.
igorsk	0:b56b6a05cad4	53	*
igorsk	0:b56b6a05cad4	54	* Redistribution and use in source and binary forms are permitted
igorsk	0:b56b6a05cad4	55	* provided that the above copyright notice and this paragraph are
igorsk	0:b56b6a05cad4	56	* duplicated in all such forms and that any documentation,
igorsk	0:b56b6a05cad4	57	* advertising materials, and other materials related to such
igorsk	0:b56b6a05cad4	58	* distribution and use acknowledge that the software was developed
igorsk	0:b56b6a05cad4	59	* by Carnegie Mellon University. The name of the
igorsk	0:b56b6a05cad4	60	* University may not be used to endorse or promote products derived
igorsk	0:b56b6a05cad4	61	* from this software without specific prior written permission.
igorsk	0:b56b6a05cad4	62	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
igorsk	0:b56b6a05cad4	63	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
igorsk	0:b56b6a05cad4	64	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
igorsk	0:b56b6a05cad4	65	*/
igorsk	0:b56b6a05cad4	66
igorsk	0:b56b6a05cad4	67	#include "lwip/opt.h"
igorsk	0:b56b6a05cad4	68
igorsk	0:b56b6a05cad4	69	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
igorsk	0:b56b6a05cad4	70
igorsk	0:b56b6a05cad4	71	#include "ppp.h"
igorsk	0:b56b6a05cad4	72	#include "pppdebug.h"
igorsk	0:b56b6a05cad4	73
igorsk	0:b56b6a05cad4	74	#include "fsm.h"
igorsk	0:b56b6a05cad4	75	#include "lcp.h"
igorsk	0:b56b6a05cad4	76	#include "pap.h"
igorsk	0:b56b6a05cad4	77	#include "chap.h"
igorsk	0:b56b6a05cad4	78	#include "auth.h"
igorsk	0:b56b6a05cad4	79	#include "ipcp.h"
igorsk	0:b56b6a05cad4	80
igorsk	0:b56b6a05cad4	81	#if CBCP_SUPPORT
igorsk	0:b56b6a05cad4	82	#include "cbcp.h"
igorsk	0:b56b6a05cad4	83	#endif /* CBCP_SUPPORT */
igorsk	0:b56b6a05cad4	84
igorsk	0:b56b6a05cad4	85	#include "lwip/inet.h"
igorsk	0:b56b6a05cad4	86
igorsk	0:b56b6a05cad4	87	#include <string.h>
igorsk	0:b56b6a05cad4	88
igorsk	0:b56b6a05cad4	89	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	90	/* Bits in scan_authfile return value */
igorsk	0:b56b6a05cad4	91	#define NONWILD_SERVER 1
igorsk	0:b56b6a05cad4	92	#define NONWILD_CLIENT 2
igorsk	0:b56b6a05cad4	93
igorsk	0:b56b6a05cad4	94	#define ISWILD(word) (word[0] == '*' && word[1] == 0)
igorsk	0:b56b6a05cad4	95	#endif /* UNUSED */
igorsk	0:b56b6a05cad4	96
igorsk	0:b56b6a05cad4	97	#if PAP_SUPPORT \|\| CHAP_SUPPORT
igorsk	0:b56b6a05cad4	98	/* The name by which the peer authenticated itself to us. */
igorsk	0:b56b6a05cad4	99	static char peer_authname[MAXNAMELEN];
igorsk	0:b56b6a05cad4	100	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	101
igorsk	0:b56b6a05cad4	102	/* Records which authentication operations haven't completed yet. */
igorsk	0:b56b6a05cad4	103	static int auth_pending[NUM_PPP];
igorsk	0:b56b6a05cad4	104
igorsk	0:b56b6a05cad4	105	/* Set if we have successfully called plogin() */
igorsk	0:b56b6a05cad4	106	static int logged_in;
igorsk	0:b56b6a05cad4	107
igorsk	0:b56b6a05cad4	108	/* Set if we have run the /etc/ppp/auth-up script. */
igorsk	0:b56b6a05cad4	109	static int did_authup; /* @todo, we don't need this in lwip*/
igorsk	0:b56b6a05cad4	110
igorsk	0:b56b6a05cad4	111	/* List of addresses which the peer may use. */
igorsk	0:b56b6a05cad4	112	static struct wordlist *addresses[NUM_PPP];
igorsk	0:b56b6a05cad4	113
igorsk	0:b56b6a05cad4	114	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	115	/* Wordlist giving addresses which the peer may use
igorsk	0:b56b6a05cad4	116	without authenticating itself. */
igorsk	0:b56b6a05cad4	117	static struct wordlist *noauth_addrs;
igorsk	0:b56b6a05cad4	118
igorsk	0:b56b6a05cad4	119	/* Extra options to apply, from the secrets file entry for the peer. */
igorsk	0:b56b6a05cad4	120	static struct wordlist *extra_options;
igorsk	0:b56b6a05cad4	121	#endif /* UNUSED */
igorsk	0:b56b6a05cad4	122
igorsk	0:b56b6a05cad4	123	/* Number of network protocols which we have opened. */
igorsk	0:b56b6a05cad4	124	static int num_np_open;
igorsk	0:b56b6a05cad4	125
igorsk	0:b56b6a05cad4	126	/* Number of network protocols which have come up. */
igorsk	0:b56b6a05cad4	127	static int num_np_up;
igorsk	0:b56b6a05cad4	128
igorsk	0:b56b6a05cad4	129	#if PAP_SUPPORT \|\| CHAP_SUPPORT
igorsk	0:b56b6a05cad4	130	/* Set if we got the contents of passwd[] from the pap-secrets file. */
igorsk	0:b56b6a05cad4	131	static int passwd_from_file;
igorsk	0:b56b6a05cad4	132	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	133
igorsk	0:b56b6a05cad4	134	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	135	/* Set if we require authentication only because we have a default route. */
igorsk	0:b56b6a05cad4	136	static bool default_auth;
igorsk	0:b56b6a05cad4	137
igorsk	0:b56b6a05cad4	138	/* Hook to enable a plugin to control the idle time limit */
igorsk	0:b56b6a05cad4	139	int (idle_time_hook) __P((struct ppp_idle )) = NULL;
igorsk	0:b56b6a05cad4	140
igorsk	0:b56b6a05cad4	141	/* Hook for a plugin to say whether we can possibly authenticate any peer */
igorsk	0:b56b6a05cad4	142	int (*pap_check_hook) __P((void)) = NULL;
igorsk	0:b56b6a05cad4	143
igorsk	0:b56b6a05cad4	144	/* Hook for a plugin to check the PAP user and password */
igorsk	0:b56b6a05cad4	145	int (pap_auth_hook) __P((char user, char passwd, char *msgp,
igorsk	0:b56b6a05cad4	146	struct wordlist **paddrs,
igorsk	0:b56b6a05cad4	147	struct wordlist **popts)) = NULL;
igorsk	0:b56b6a05cad4	148
igorsk	0:b56b6a05cad4	149	/* Hook for a plugin to know about the PAP user logout */
igorsk	0:b56b6a05cad4	150	void (*pap_logout_hook) __P((void)) = NULL;
igorsk	0:b56b6a05cad4	151
igorsk	0:b56b6a05cad4	152	/* Hook for a plugin to get the PAP password for authenticating us */
igorsk	0:b56b6a05cad4	153	int (pap_passwd_hook) __P((char user, char *passwd)) = NULL;
igorsk	0:b56b6a05cad4	154
igorsk	0:b56b6a05cad4	155	/*
igorsk	0:b56b6a05cad4	156	* This is used to ensure that we don't start an auth-up/down
igorsk	0:b56b6a05cad4	157	* script while one is already running.
igorsk	0:b56b6a05cad4	158	*/
igorsk	0:b56b6a05cad4	159	enum script_state {
igorsk	0:b56b6a05cad4	160	s_down,
igorsk	0:b56b6a05cad4	161	s_up
igorsk	0:b56b6a05cad4	162	};
igorsk	0:b56b6a05cad4	163
igorsk	0:b56b6a05cad4	164	static enum script_state auth_state = s_down;
igorsk	0:b56b6a05cad4	165	static enum script_state auth_script_state = s_down;
igorsk	0:b56b6a05cad4	166	static pid_t auth_script_pid = 0;
igorsk	0:b56b6a05cad4	167
igorsk	0:b56b6a05cad4	168	/*
igorsk	0:b56b6a05cad4	169	* Option variables.
igorsk	0:b56b6a05cad4	170	* lwip: some of these are present in the ppp_settings structure
igorsk	0:b56b6a05cad4	171	*/
igorsk	0:b56b6a05cad4	172	bool uselogin = 0; /* Use /etc/passwd for checking PAP */
igorsk	0:b56b6a05cad4	173	bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
igorsk	0:b56b6a05cad4	174	bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
igorsk	0:b56b6a05cad4	175	bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
igorsk	0:b56b6a05cad4	176	bool usehostname = 0; /* Use hostname for our_name */
igorsk	0:b56b6a05cad4	177	bool auth_required = 0; /* Always require authentication from peer */
igorsk	0:b56b6a05cad4	178	bool allow_any_ip = 0; /* Allow peer to use any IP address */
igorsk	0:b56b6a05cad4	179	bool explicit_remote = 0; /* User specified explicit remote name */
igorsk	0:b56b6a05cad4	180	char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
igorsk	0:b56b6a05cad4	181
igorsk	0:b56b6a05cad4	182	#endif /* UNUSED */
igorsk	0:b56b6a05cad4	183
igorsk	0:b56b6a05cad4	184	/* Bits in auth_pending[] */
igorsk	0:b56b6a05cad4	185	#define PAP_WITHPEER 1
igorsk	0:b56b6a05cad4	186	#define PAP_PEER 2
igorsk	0:b56b6a05cad4	187	#define CHAP_WITHPEER 4
igorsk	0:b56b6a05cad4	188	#define CHAP_PEER 8
igorsk	0:b56b6a05cad4	189
igorsk	0:b56b6a05cad4	190	/* @todo, move this somewhere */
igorsk	0:b56b6a05cad4	191	/* Used for storing a sequence of words. Usually malloced. */
igorsk	0:b56b6a05cad4	192	struct wordlist {
igorsk	0:b56b6a05cad4	193	struct wordlist *next;
igorsk	0:b56b6a05cad4	194	char word[1];
igorsk	0:b56b6a05cad4	195	};
igorsk	0:b56b6a05cad4	196
igorsk	0:b56b6a05cad4	197
igorsk	0:b56b6a05cad4	198	extern char crypt (const char , const char *);
igorsk	0:b56b6a05cad4	199
igorsk	0:b56b6a05cad4	200	/* Prototypes for procedures local to this file. */
igorsk	0:b56b6a05cad4	201
igorsk	0:b56b6a05cad4	202	static void network_phase (int);
igorsk	0:b56b6a05cad4	203	static void check_idle (void *);
igorsk	0:b56b6a05cad4	204	static void connect_time_expired (void *);
igorsk	0:b56b6a05cad4	205	#if 0
igorsk	0:b56b6a05cad4	206	static int plogin (char , char , char *, int );
igorsk	0:b56b6a05cad4	207	#endif
igorsk	0:b56b6a05cad4	208	static void plogout (void);
igorsk	0:b56b6a05cad4	209	static int null_login (int);
igorsk	0:b56b6a05cad4	210	static int get_pap_passwd (int, char , char );
igorsk	0:b56b6a05cad4	211	static int have_pap_secret (void);
igorsk	0:b56b6a05cad4	212	static int have_chap_secret (char , char , u32_t);
igorsk	0:b56b6a05cad4	213	static int ip_addr_check (u32_t, struct wordlist *);
igorsk	0:b56b6a05cad4	214
igorsk	0:b56b6a05cad4	215	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	216	static int scan_authfile (FILE , char , char , char ,
igorsk	0:b56b6a05cad4	217	struct wordlist , struct wordlist ,
igorsk	0:b56b6a05cad4	218	char *);
igorsk	0:b56b6a05cad4	219	static void free_wordlist (struct wordlist *);
igorsk	0:b56b6a05cad4	220	static void auth_script (char *);
igorsk	0:b56b6a05cad4	221	static void auth_script_done (void *);
igorsk	0:b56b6a05cad4	222	static void set_allowed_addrs (int unit, struct wordlist *addrs);
igorsk	0:b56b6a05cad4	223	static int some_ip_ok (struct wordlist *);
igorsk	0:b56b6a05cad4	224	static int setupapfile (char **);
igorsk	0:b56b6a05cad4	225	static int privgroup (char **);
igorsk	0:b56b6a05cad4	226	static int set_noauth_addr (char **);
igorsk	0:b56b6a05cad4	227	static void check_access (FILE , char );
igorsk	0:b56b6a05cad4	228	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	229
igorsk	0:b56b6a05cad4	230	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	231	/*
igorsk	0:b56b6a05cad4	232	* Authentication-related options.
igorsk	0:b56b6a05cad4	233	*/
igorsk	0:b56b6a05cad4	234	option_t auth_options[] = {
igorsk	0:b56b6a05cad4	235	{ "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
igorsk	0:b56b6a05cad4	236	"Require PAP authentication from peer", 1, &auth_required },
igorsk	0:b56b6a05cad4	237	{ "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
igorsk	0:b56b6a05cad4	238	"Require PAP authentication from peer", 1, &auth_required },
igorsk	0:b56b6a05cad4	239	{ "refuse-pap", o_bool, &refuse_pap,
igorsk	0:b56b6a05cad4	240	"Don't agree to auth to peer with PAP", 1 },
igorsk	0:b56b6a05cad4	241	{ "-pap", o_bool, &refuse_pap,
igorsk	0:b56b6a05cad4	242	"Don't allow PAP authentication with peer", 1 },
igorsk	0:b56b6a05cad4	243	{ "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
igorsk	0:b56b6a05cad4	244	"Require CHAP authentication from peer", 1, &auth_required },
igorsk	0:b56b6a05cad4	245	{ "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
igorsk	0:b56b6a05cad4	246	"Require CHAP authentication from peer", 1, &auth_required },
igorsk	0:b56b6a05cad4	247	{ "refuse-chap", o_bool, &refuse_chap,
igorsk	0:b56b6a05cad4	248	"Don't agree to auth to peer with CHAP", 1 },
igorsk	0:b56b6a05cad4	249	{ "-chap", o_bool, &refuse_chap,
igorsk	0:b56b6a05cad4	250	"Don't allow CHAP authentication with peer", 1 },
igorsk	0:b56b6a05cad4	251	{ "name", o_string, our_name,
igorsk	0:b56b6a05cad4	252	"Set local name for authentication",
igorsk	0:b56b6a05cad4	253	OPT_PRIV\|OPT_STATIC, NULL, MAXNAMELEN },
igorsk	0:b56b6a05cad4	254	{ "user", o_string, user,
igorsk	0:b56b6a05cad4	255	"Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
igorsk	0:b56b6a05cad4	256	{ "usehostname", o_bool, &usehostname,
igorsk	0:b56b6a05cad4	257	"Must use hostname for authentication", 1 },
igorsk	0:b56b6a05cad4	258	{ "remotename", o_string, remote_name,
igorsk	0:b56b6a05cad4	259	"Set remote name for authentication", OPT_STATIC,
igorsk	0:b56b6a05cad4	260	&explicit_remote, MAXNAMELEN },
igorsk	0:b56b6a05cad4	261	{ "auth", o_bool, &auth_required,
igorsk	0:b56b6a05cad4	262	"Require authentication from peer", 1 },
igorsk	0:b56b6a05cad4	263	{ "noauth", o_bool, &auth_required,
igorsk	0:b56b6a05cad4	264	"Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
igorsk	0:b56b6a05cad4	265	{ "login", o_bool, &uselogin,
igorsk	0:b56b6a05cad4	266	"Use system password database for PAP", 1 },
igorsk	0:b56b6a05cad4	267	{ "papcrypt", o_bool, &cryptpap,
igorsk	0:b56b6a05cad4	268	"PAP passwords are encrypted", 1 },
igorsk	0:b56b6a05cad4	269	{ "+ua", o_special, (void *)setupapfile,
igorsk	0:b56b6a05cad4	270	"Get PAP user and password from file" },
igorsk	0:b56b6a05cad4	271	{ "password", o_string, passwd,
igorsk	0:b56b6a05cad4	272	"Password for authenticating us to the peer", OPT_STATIC,
igorsk	0:b56b6a05cad4	273	NULL, MAXSECRETLEN },
igorsk	0:b56b6a05cad4	274	{ "privgroup", o_special, (void *)privgroup,
igorsk	0:b56b6a05cad4	275	"Allow group members to use privileged options", OPT_PRIV },
igorsk	0:b56b6a05cad4	276	{ "allow-ip", o_special, (void *)set_noauth_addr,
igorsk	0:b56b6a05cad4	277	"Set IP address(es) which can be used without authentication",
igorsk	0:b56b6a05cad4	278	OPT_PRIV },
igorsk	0:b56b6a05cad4	279	{ NULL }
igorsk	0:b56b6a05cad4	280	};
igorsk	0:b56b6a05cad4	281	#endif /* UNUSED */
igorsk	0:b56b6a05cad4	282	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	283	/*
igorsk	0:b56b6a05cad4	284	* setupapfile - specifies UPAP info for authenticating with peer.
igorsk	0:b56b6a05cad4	285	*/
igorsk	0:b56b6a05cad4	286	static int
igorsk	0:b56b6a05cad4	287	setupapfile(char **argv)
igorsk	0:b56b6a05cad4	288	{
igorsk	0:b56b6a05cad4	289	FILE * ufile;
igorsk	0:b56b6a05cad4	290	int l;
igorsk	0:b56b6a05cad4	291
igorsk	0:b56b6a05cad4	292	lcp_allowoptions[0].neg_upap = 1;
igorsk	0:b56b6a05cad4	293
igorsk	0:b56b6a05cad4	294	/* open user info file */
igorsk	0:b56b6a05cad4	295	seteuid(getuid());
igorsk	0:b56b6a05cad4	296	ufile = fopen(*argv, "r");
igorsk	0:b56b6a05cad4	297	seteuid(0);
igorsk	0:b56b6a05cad4	298	if (ufile == NULL) {
igorsk	0:b56b6a05cad4	299	option_error("unable to open user login data file %s", *argv);
igorsk	0:b56b6a05cad4	300	return 0;
igorsk	0:b56b6a05cad4	301	}
igorsk	0:b56b6a05cad4	302	check_access(ufile, *argv);
igorsk	0:b56b6a05cad4	303
igorsk	0:b56b6a05cad4	304	/* get username */
igorsk	0:b56b6a05cad4	305	if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
igorsk	0:b56b6a05cad4	306	\|\| fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
igorsk	0:b56b6a05cad4	307	option_error("unable to read user login data file %s", *argv);
igorsk	0:b56b6a05cad4	308	return 0;
igorsk	0:b56b6a05cad4	309	}
igorsk	0:b56b6a05cad4	310	fclose(ufile);
igorsk	0:b56b6a05cad4	311
igorsk	0:b56b6a05cad4	312	/* get rid of newlines */
igorsk	0:b56b6a05cad4	313	l = strlen(user);
igorsk	0:b56b6a05cad4	314	if (l > 0 && user[l-1] == '\n')
igorsk	0:b56b6a05cad4	315	user[l-1] = 0;
igorsk	0:b56b6a05cad4	316	l = strlen(passwd);
igorsk	0:b56b6a05cad4	317	if (l > 0 && passwd[l-1] == '\n')
igorsk	0:b56b6a05cad4	318	passwd[l-1] = 0;
igorsk	0:b56b6a05cad4	319
igorsk	0:b56b6a05cad4	320	return (1);
igorsk	0:b56b6a05cad4	321	}
igorsk	0:b56b6a05cad4	322	#endif /* UNUSED */
igorsk	0:b56b6a05cad4	323
igorsk	0:b56b6a05cad4	324	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	325	/*
igorsk	0:b56b6a05cad4	326	* privgroup - allow members of the group to have privileged access.
igorsk	0:b56b6a05cad4	327	*/
igorsk	0:b56b6a05cad4	328	static int
igorsk	0:b56b6a05cad4	329	privgroup(char **argv)
igorsk	0:b56b6a05cad4	330	{
igorsk	0:b56b6a05cad4	331	struct group *g;
igorsk	0:b56b6a05cad4	332	int i;
igorsk	0:b56b6a05cad4	333
igorsk	0:b56b6a05cad4	334	g = getgrnam(*argv);
igorsk	0:b56b6a05cad4	335	if (g == 0) {
igorsk	0:b56b6a05cad4	336	option_error("group %s is unknown", *argv);
igorsk	0:b56b6a05cad4	337	return 0;
igorsk	0:b56b6a05cad4	338	}
igorsk	0:b56b6a05cad4	339	for (i = 0; i < ngroups; ++i) {
igorsk	0:b56b6a05cad4	340	if (groups[i] == g->gr_gid) {
igorsk	0:b56b6a05cad4	341	privileged = 1;
igorsk	0:b56b6a05cad4	342	break;
igorsk	0:b56b6a05cad4	343	}
igorsk	0:b56b6a05cad4	344	}
igorsk	0:b56b6a05cad4	345	return 1;
igorsk	0:b56b6a05cad4	346	}
igorsk	0:b56b6a05cad4	347	#endif
igorsk	0:b56b6a05cad4	348
igorsk	0:b56b6a05cad4	349	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	350	/*
igorsk	0:b56b6a05cad4	351	* set_noauth_addr - set address(es) that can be used without authentication.
igorsk	0:b56b6a05cad4	352	* Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
igorsk	0:b56b6a05cad4	353	*/
igorsk	0:b56b6a05cad4	354	static int
igorsk	0:b56b6a05cad4	355	set_noauth_addr(char **argv)
igorsk	0:b56b6a05cad4	356	{
igorsk	0:b56b6a05cad4	357	char addr = argv;
igorsk	0:b56b6a05cad4	358	int l = strlen(addr);
igorsk	0:b56b6a05cad4	359	struct wordlist *wp;
igorsk	0:b56b6a05cad4	360
igorsk	0:b56b6a05cad4	361	wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
igorsk	0:b56b6a05cad4	362	if (wp == NULL)
igorsk	0:b56b6a05cad4	363	novm("allow-ip argument");
igorsk	0:b56b6a05cad4	364	wp->word = (char *) (wp + 1);
igorsk	0:b56b6a05cad4	365	wp->next = noauth_addrs;
igorsk	0:b56b6a05cad4	366	BCOPY(addr, wp->word, l);
igorsk	0:b56b6a05cad4	367	noauth_addrs = wp;
igorsk	0:b56b6a05cad4	368	return 1;
igorsk	0:b56b6a05cad4	369	}
igorsk	0:b56b6a05cad4	370	#endif /* UNUSED */
igorsk	0:b56b6a05cad4	371
igorsk	0:b56b6a05cad4	372	/*
igorsk	0:b56b6a05cad4	373	* An Open on LCP has requested a change from Dead to Establish phase.
igorsk	0:b56b6a05cad4	374	* Do what's necessary to bring the physical layer up.
igorsk	0:b56b6a05cad4	375	*/
igorsk	0:b56b6a05cad4	376	void
igorsk	0:b56b6a05cad4	377	link_required(int unit)
igorsk	0:b56b6a05cad4	378	{
igorsk	0:b56b6a05cad4	379	LWIP_UNUSED_ARG(unit);
igorsk	0:b56b6a05cad4	380
igorsk	0:b56b6a05cad4	381	AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
igorsk	0:b56b6a05cad4	382	}
igorsk	0:b56b6a05cad4	383
igorsk	0:b56b6a05cad4	384	/*
igorsk	0:b56b6a05cad4	385	* LCP has terminated the link; go to the Dead phase and take the
igorsk	0:b56b6a05cad4	386	* physical layer down.
igorsk	0:b56b6a05cad4	387	*/
igorsk	0:b56b6a05cad4	388	void
igorsk	0:b56b6a05cad4	389	link_terminated(int unit)
igorsk	0:b56b6a05cad4	390	{
igorsk	0:b56b6a05cad4	391	AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
igorsk	0:b56b6a05cad4	392	if (lcp_phase[unit] == PHASE_DEAD) {
igorsk	0:b56b6a05cad4	393	return;
igorsk	0:b56b6a05cad4	394	}
igorsk	0:b56b6a05cad4	395	if (logged_in) {
igorsk	0:b56b6a05cad4	396	plogout();
igorsk	0:b56b6a05cad4	397	}
igorsk	0:b56b6a05cad4	398	lcp_phase[unit] = PHASE_DEAD;
igorsk	0:b56b6a05cad4	399	AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
igorsk	0:b56b6a05cad4	400	pppLinkTerminated(unit);
igorsk	0:b56b6a05cad4	401	}
igorsk	0:b56b6a05cad4	402
igorsk	0:b56b6a05cad4	403	/*
igorsk	0:b56b6a05cad4	404	* LCP has gone down; it will either die or try to re-establish.
igorsk	0:b56b6a05cad4	405	*/
igorsk	0:b56b6a05cad4	406	void
igorsk	0:b56b6a05cad4	407	link_down(int unit)
igorsk	0:b56b6a05cad4	408	{
igorsk	0:b56b6a05cad4	409	int i;
igorsk	0:b56b6a05cad4	410	struct protent *protp;
igorsk	0:b56b6a05cad4	411
igorsk	0:b56b6a05cad4	412	AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
igorsk	0:b56b6a05cad4	413
igorsk	0:b56b6a05cad4	414	if (did_authup) {
igorsk	0:b56b6a05cad4	415	/* XXX Do link down processing. */
igorsk	0:b56b6a05cad4	416	did_authup = 0;
igorsk	0:b56b6a05cad4	417	}
igorsk	0:b56b6a05cad4	418	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
igorsk	0:b56b6a05cad4	419	if (!protp->enabled_flag) {
igorsk	0:b56b6a05cad4	420	continue;
igorsk	0:b56b6a05cad4	421	}
igorsk	0:b56b6a05cad4	422	if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
igorsk	0:b56b6a05cad4	423	(*protp->lowerdown)(unit);
igorsk	0:b56b6a05cad4	424	}
igorsk	0:b56b6a05cad4	425	if (protp->protocol < 0xC000 && protp->close != NULL) {
igorsk	0:b56b6a05cad4	426	(*protp->close)(unit, "LCP down");
igorsk	0:b56b6a05cad4	427	}
igorsk	0:b56b6a05cad4	428	}
igorsk	0:b56b6a05cad4	429	num_np_open = 0; /* number of network protocols we have opened */
igorsk	0:b56b6a05cad4	430	num_np_up = 0; /* Number of network protocols which have come up */
igorsk	0:b56b6a05cad4	431
igorsk	0:b56b6a05cad4	432	if (lcp_phase[unit] != PHASE_DEAD) {
igorsk	0:b56b6a05cad4	433	lcp_phase[unit] = PHASE_TERMINATE;
igorsk	0:b56b6a05cad4	434	}
igorsk	0:b56b6a05cad4	435	pppLinkDown(unit);
igorsk	0:b56b6a05cad4	436	}
igorsk	0:b56b6a05cad4	437
igorsk	0:b56b6a05cad4	438	/*
igorsk	0:b56b6a05cad4	439	* The link is established.
igorsk	0:b56b6a05cad4	440	* Proceed to the Dead, Authenticate or Network phase as appropriate.
igorsk	0:b56b6a05cad4	441	*/
igorsk	0:b56b6a05cad4	442	void
igorsk	0:b56b6a05cad4	443	link_established(int unit)
igorsk	0:b56b6a05cad4	444	{
igorsk	0:b56b6a05cad4	445	int auth;
igorsk	0:b56b6a05cad4	446	int i;
igorsk	0:b56b6a05cad4	447	struct protent *protp;
igorsk	0:b56b6a05cad4	448	lcp_options *wo = &lcp_wantoptions[unit];
igorsk	0:b56b6a05cad4	449	lcp_options *go = &lcp_gotoptions[unit];
igorsk	0:b56b6a05cad4	450	#if PAP_SUPPORT \|\| CHAP_SUPPORT
igorsk	0:b56b6a05cad4	451	lcp_options *ho = &lcp_hisoptions[unit];
igorsk	0:b56b6a05cad4	452	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	453
igorsk	0:b56b6a05cad4	454	AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
igorsk	0:b56b6a05cad4	455	/*
igorsk	0:b56b6a05cad4	456	* Tell higher-level protocols that LCP is up.
igorsk	0:b56b6a05cad4	457	*/
igorsk	0:b56b6a05cad4	458	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
igorsk	0:b56b6a05cad4	459	if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
igorsk	0:b56b6a05cad4	460	(*protp->lowerup)(unit);
igorsk	0:b56b6a05cad4	461	}
igorsk	0:b56b6a05cad4	462	}
igorsk	0:b56b6a05cad4	463	if (ppp_settings.auth_required && !(go->neg_chap \|\| go->neg_upap)) {
igorsk	0:b56b6a05cad4	464	/*
igorsk	0:b56b6a05cad4	465	* We wanted the peer to authenticate itself, and it refused:
igorsk	0:b56b6a05cad4	466	* treat it as though it authenticated with PAP using a username
igorsk	0:b56b6a05cad4	467	* of "" and a password of "". If that's not OK, boot it out.
igorsk	0:b56b6a05cad4	468	*/
igorsk	0:b56b6a05cad4	469	if (!wo->neg_upap \|\| !null_login(unit)) {
igorsk	0:b56b6a05cad4	470	AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
igorsk	0:b56b6a05cad4	471	lcp_close(unit, "peer refused to authenticate");
igorsk	0:b56b6a05cad4	472	return;
igorsk	0:b56b6a05cad4	473	}
igorsk	0:b56b6a05cad4	474	}
igorsk	0:b56b6a05cad4	475
igorsk	0:b56b6a05cad4	476	lcp_phase[unit] = PHASE_AUTHENTICATE;
igorsk	0:b56b6a05cad4	477	auth = 0;
igorsk	0:b56b6a05cad4	478	#if CHAP_SUPPORT
igorsk	0:b56b6a05cad4	479	if (go->neg_chap) {
igorsk	0:b56b6a05cad4	480	ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
igorsk	0:b56b6a05cad4	481	auth \|= CHAP_PEER;
igorsk	0:b56b6a05cad4	482	}
igorsk	0:b56b6a05cad4	483	#endif /* CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	484	#if PAP_SUPPORT && CHAP_SUPPORT
igorsk	0:b56b6a05cad4	485	else
igorsk	0:b56b6a05cad4	486	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	487	#if PAP_SUPPORT
igorsk	0:b56b6a05cad4	488	if (go->neg_upap) {
igorsk	0:b56b6a05cad4	489	upap_authpeer(unit);
igorsk	0:b56b6a05cad4	490	auth \|= PAP_PEER;
igorsk	0:b56b6a05cad4	491	}
igorsk	0:b56b6a05cad4	492	#endif /* PAP_SUPPORT */
igorsk	0:b56b6a05cad4	493	#if CHAP_SUPPORT
igorsk	0:b56b6a05cad4	494	if (ho->neg_chap) {
igorsk	0:b56b6a05cad4	495	ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
igorsk	0:b56b6a05cad4	496	auth \|= CHAP_WITHPEER;
igorsk	0:b56b6a05cad4	497	}
igorsk	0:b56b6a05cad4	498	#endif /* CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	499	#if PAP_SUPPORT && CHAP_SUPPORT
igorsk	0:b56b6a05cad4	500	else
igorsk	0:b56b6a05cad4	501	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	502	#if PAP_SUPPORT
igorsk	0:b56b6a05cad4	503	if (ho->neg_upap) {
igorsk	0:b56b6a05cad4	504	if (ppp_settings.passwd[0] == 0) {
igorsk	0:b56b6a05cad4	505	passwd_from_file = 1;
igorsk	0:b56b6a05cad4	506	if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
igorsk	0:b56b6a05cad4	507	AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
igorsk	0:b56b6a05cad4	508	}
igorsk	0:b56b6a05cad4	509	}
igorsk	0:b56b6a05cad4	510	upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
igorsk	0:b56b6a05cad4	511	auth \|= PAP_WITHPEER;
igorsk	0:b56b6a05cad4	512	}
igorsk	0:b56b6a05cad4	513	#endif /* PAP_SUPPORT */
igorsk	0:b56b6a05cad4	514	auth_pending[unit] = auth;
igorsk	0:b56b6a05cad4	515
igorsk	0:b56b6a05cad4	516	if (!auth) {
igorsk	0:b56b6a05cad4	517	network_phase(unit);
igorsk	0:b56b6a05cad4	518	}
igorsk	0:b56b6a05cad4	519	}
igorsk	0:b56b6a05cad4	520
igorsk	0:b56b6a05cad4	521	/*
igorsk	0:b56b6a05cad4	522	* Proceed to the network phase.
igorsk	0:b56b6a05cad4	523	*/
igorsk	0:b56b6a05cad4	524	static void
igorsk	0:b56b6a05cad4	525	network_phase(int unit)
igorsk	0:b56b6a05cad4	526	{
igorsk	0:b56b6a05cad4	527	int i;
igorsk	0:b56b6a05cad4	528	struct protent *protp;
igorsk	0:b56b6a05cad4	529	lcp_options *go = &lcp_gotoptions[unit];
igorsk	0:b56b6a05cad4	530
igorsk	0:b56b6a05cad4	531	/*
igorsk	0:b56b6a05cad4	532	* If the peer had to authenticate, run the auth-up script now.
igorsk	0:b56b6a05cad4	533	*/
igorsk	0:b56b6a05cad4	534	if ((go->neg_chap \|\| go->neg_upap) && !did_authup) {
igorsk	0:b56b6a05cad4	535	/* XXX Do setup for peer authentication. */
igorsk	0:b56b6a05cad4	536	did_authup = 1;
igorsk	0:b56b6a05cad4	537	}
igorsk	0:b56b6a05cad4	538
igorsk	0:b56b6a05cad4	539	#if CBCP_SUPPORT
igorsk	0:b56b6a05cad4	540	/*
igorsk	0:b56b6a05cad4	541	* If we negotiated callback, do it now.
igorsk	0:b56b6a05cad4	542	*/
igorsk	0:b56b6a05cad4	543	if (go->neg_cbcp) {
igorsk	0:b56b6a05cad4	544	lcp_phase[unit] = PHASE_CALLBACK;
igorsk	0:b56b6a05cad4	545	(*cbcp_protent.open)(unit);
igorsk	0:b56b6a05cad4	546	return;
igorsk	0:b56b6a05cad4	547	}
igorsk	0:b56b6a05cad4	548	#endif /* CBCP_SUPPORT */
igorsk	0:b56b6a05cad4	549
igorsk	0:b56b6a05cad4	550	lcp_phase[unit] = PHASE_NETWORK;
igorsk	0:b56b6a05cad4	551	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
igorsk	0:b56b6a05cad4	552	if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
igorsk	0:b56b6a05cad4	553	(*protp->open)(unit);
igorsk	0:b56b6a05cad4	554	if (protp->protocol != PPP_CCP) {
igorsk	0:b56b6a05cad4	555	++num_np_open;
igorsk	0:b56b6a05cad4	556	}
igorsk	0:b56b6a05cad4	557	}
igorsk	0:b56b6a05cad4	558	}
igorsk	0:b56b6a05cad4	559
igorsk	0:b56b6a05cad4	560	if (num_np_open == 0) {
igorsk	0:b56b6a05cad4	561	/* nothing to do */
igorsk	0:b56b6a05cad4	562	lcp_close(0, "No network protocols running");
igorsk	0:b56b6a05cad4	563	}
igorsk	0:b56b6a05cad4	564	}
igorsk	0:b56b6a05cad4	565	/* @todo: add void start_networks(void) here (pppd 2.3.11) */
igorsk	0:b56b6a05cad4	566
igorsk	0:b56b6a05cad4	567	/*
igorsk	0:b56b6a05cad4	568	* The peer has failed to authenticate himself using `protocol'.
igorsk	0:b56b6a05cad4	569	*/
igorsk	0:b56b6a05cad4	570	void
igorsk	0:b56b6a05cad4	571	auth_peer_fail(int unit, u16_t protocol)
igorsk	0:b56b6a05cad4	572	{
igorsk	0:b56b6a05cad4	573	LWIP_UNUSED_ARG(protocol);
igorsk	0:b56b6a05cad4	574
igorsk	0:b56b6a05cad4	575	AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
igorsk	0:b56b6a05cad4	576	/*
igorsk	0:b56b6a05cad4	577	* Authentication failure: take the link down
igorsk	0:b56b6a05cad4	578	*/
igorsk	0:b56b6a05cad4	579	lcp_close(unit, "Authentication failed");
igorsk	0:b56b6a05cad4	580	}
igorsk	0:b56b6a05cad4	581
igorsk	0:b56b6a05cad4	582
igorsk	0:b56b6a05cad4	583	#if PAP_SUPPORT \|\| CHAP_SUPPORT
igorsk	0:b56b6a05cad4	584	/*
igorsk	0:b56b6a05cad4	585	* The peer has been successfully authenticated using `protocol'.
igorsk	0:b56b6a05cad4	586	*/
igorsk	0:b56b6a05cad4	587	void
igorsk	0:b56b6a05cad4	588	auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
igorsk	0:b56b6a05cad4	589	{
igorsk	0:b56b6a05cad4	590	int pbit;
igorsk	0:b56b6a05cad4	591
igorsk	0:b56b6a05cad4	592	AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
igorsk	0:b56b6a05cad4	593	switch (protocol) {
igorsk	0:b56b6a05cad4	594	case PPP_CHAP:
igorsk	0:b56b6a05cad4	595	pbit = CHAP_PEER;
igorsk	0:b56b6a05cad4	596	break;
igorsk	0:b56b6a05cad4	597	case PPP_PAP:
igorsk	0:b56b6a05cad4	598	pbit = PAP_PEER;
igorsk	0:b56b6a05cad4	599	break;
igorsk	0:b56b6a05cad4	600	default:
igorsk	0:b56b6a05cad4	601	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
igorsk	0:b56b6a05cad4	602	return;
igorsk	0:b56b6a05cad4	603	}
igorsk	0:b56b6a05cad4	604
igorsk	0:b56b6a05cad4	605	/*
igorsk	0:b56b6a05cad4	606	* Save the authenticated name of the peer for later.
igorsk	0:b56b6a05cad4	607	*/
igorsk	0:b56b6a05cad4	608	if (namelen > (int)sizeof(peer_authname) - 1) {
igorsk	0:b56b6a05cad4	609	namelen = sizeof(peer_authname) - 1;
igorsk	0:b56b6a05cad4	610	}
igorsk	0:b56b6a05cad4	611	BCOPY(name, peer_authname, namelen);
igorsk	0:b56b6a05cad4	612	peer_authname[namelen] = 0;
igorsk	0:b56b6a05cad4	613
igorsk	0:b56b6a05cad4	614	/*
igorsk	0:b56b6a05cad4	615	* If there is no more authentication still to be done,
igorsk	0:b56b6a05cad4	616	* proceed to the network (or callback) phase.
igorsk	0:b56b6a05cad4	617	*/
igorsk	0:b56b6a05cad4	618	if ((auth_pending[unit] &= ~pbit) == 0) {
igorsk	0:b56b6a05cad4	619	network_phase(unit);
igorsk	0:b56b6a05cad4	620	}
igorsk	0:b56b6a05cad4	621	}
igorsk	0:b56b6a05cad4	622
igorsk	0:b56b6a05cad4	623	/*
igorsk	0:b56b6a05cad4	624	* We have failed to authenticate ourselves to the peer using `protocol'.
igorsk	0:b56b6a05cad4	625	*/
igorsk	0:b56b6a05cad4	626	void
igorsk	0:b56b6a05cad4	627	auth_withpeer_fail(int unit, u16_t protocol)
igorsk	0:b56b6a05cad4	628	{
igorsk	0:b56b6a05cad4	629	int errCode = PPPERR_AUTHFAIL;
igorsk	0:b56b6a05cad4	630
igorsk	0:b56b6a05cad4	631	LWIP_UNUSED_ARG(protocol);
igorsk	0:b56b6a05cad4	632
igorsk	0:b56b6a05cad4	633	AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
igorsk	0:b56b6a05cad4	634	if (passwd_from_file) {
igorsk	0:b56b6a05cad4	635	BZERO(ppp_settings.passwd, MAXSECRETLEN);
igorsk	0:b56b6a05cad4	636	}
igorsk	0:b56b6a05cad4	637
igorsk	0:b56b6a05cad4	638	/*
igorsk	0:b56b6a05cad4	639	* We've failed to authenticate ourselves to our peer.
igorsk	0:b56b6a05cad4	640	* He'll probably take the link down, and there's not much
igorsk	0:b56b6a05cad4	641	* we can do except wait for that.
igorsk	0:b56b6a05cad4	642	*/
igorsk	0:b56b6a05cad4	643	pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
igorsk	0:b56b6a05cad4	644	lcp_close(unit, "Failed to authenticate ourselves to peer");
igorsk	0:b56b6a05cad4	645	}
igorsk	0:b56b6a05cad4	646
igorsk	0:b56b6a05cad4	647	/*
igorsk	0:b56b6a05cad4	648	* We have successfully authenticated ourselves with the peer using `protocol'.
igorsk	0:b56b6a05cad4	649	*/
igorsk	0:b56b6a05cad4	650	void
igorsk	0:b56b6a05cad4	651	auth_withpeer_success(int unit, u16_t protocol)
igorsk	0:b56b6a05cad4	652	{
igorsk	0:b56b6a05cad4	653	int pbit;
igorsk	0:b56b6a05cad4	654
igorsk	0:b56b6a05cad4	655	AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
igorsk	0:b56b6a05cad4	656	switch (protocol) {
igorsk	0:b56b6a05cad4	657	case PPP_CHAP:
igorsk	0:b56b6a05cad4	658	pbit = CHAP_WITHPEER;
igorsk	0:b56b6a05cad4	659	break;
igorsk	0:b56b6a05cad4	660	case PPP_PAP:
igorsk	0:b56b6a05cad4	661	if (passwd_from_file) {
igorsk	0:b56b6a05cad4	662	BZERO(ppp_settings.passwd, MAXSECRETLEN);
igorsk	0:b56b6a05cad4	663	}
igorsk	0:b56b6a05cad4	664	pbit = PAP_WITHPEER;
igorsk	0:b56b6a05cad4	665	break;
igorsk	0:b56b6a05cad4	666	default:
igorsk	0:b56b6a05cad4	667	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
igorsk	0:b56b6a05cad4	668	pbit = 0;
igorsk	0:b56b6a05cad4	669	}
igorsk	0:b56b6a05cad4	670
igorsk	0:b56b6a05cad4	671	/*
igorsk	0:b56b6a05cad4	672	* If there is no more authentication still being done,
igorsk	0:b56b6a05cad4	673	* proceed to the network (or callback) phase.
igorsk	0:b56b6a05cad4	674	*/
igorsk	0:b56b6a05cad4	675	if ((auth_pending[unit] &= ~pbit) == 0) {
igorsk	0:b56b6a05cad4	676	network_phase(unit);
igorsk	0:b56b6a05cad4	677	}
igorsk	0:b56b6a05cad4	678	}
igorsk	0:b56b6a05cad4	679	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	680
igorsk	0:b56b6a05cad4	681
igorsk	0:b56b6a05cad4	682	/*
igorsk	0:b56b6a05cad4	683	* np_up - a network protocol has come up.
igorsk	0:b56b6a05cad4	684	*/
igorsk	0:b56b6a05cad4	685	void
igorsk	0:b56b6a05cad4	686	np_up(int unit, u16_t proto)
igorsk	0:b56b6a05cad4	687	{
igorsk	0:b56b6a05cad4	688	LWIP_UNUSED_ARG(unit);
igorsk	0:b56b6a05cad4	689	LWIP_UNUSED_ARG(proto);
igorsk	0:b56b6a05cad4	690
igorsk	0:b56b6a05cad4	691	AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
igorsk	0:b56b6a05cad4	692	if (num_np_up == 0) {
igorsk	0:b56b6a05cad4	693	AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
igorsk	0:b56b6a05cad4	694	/*
igorsk	0:b56b6a05cad4	695	* At this point we consider that the link has come up successfully.
igorsk	0:b56b6a05cad4	696	*/
igorsk	0:b56b6a05cad4	697	if (ppp_settings.idle_time_limit > 0) {
igorsk	0:b56b6a05cad4	698	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
igorsk	0:b56b6a05cad4	699	}
igorsk	0:b56b6a05cad4	700
igorsk	0:b56b6a05cad4	701	/*
igorsk	0:b56b6a05cad4	702	* Set a timeout to close the connection once the maximum
igorsk	0:b56b6a05cad4	703	* connect time has expired.
igorsk	0:b56b6a05cad4	704	*/
igorsk	0:b56b6a05cad4	705	if (ppp_settings.maxconnect > 0) {
igorsk	0:b56b6a05cad4	706	TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
igorsk	0:b56b6a05cad4	707	}
igorsk	0:b56b6a05cad4	708	}
igorsk	0:b56b6a05cad4	709	++num_np_up;
igorsk	0:b56b6a05cad4	710	}
igorsk	0:b56b6a05cad4	711
igorsk	0:b56b6a05cad4	712	/*
igorsk	0:b56b6a05cad4	713	* np_down - a network protocol has gone down.
igorsk	0:b56b6a05cad4	714	*/
igorsk	0:b56b6a05cad4	715	void
igorsk	0:b56b6a05cad4	716	np_down(int unit, u16_t proto)
igorsk	0:b56b6a05cad4	717	{
igorsk	0:b56b6a05cad4	718	LWIP_UNUSED_ARG(unit);
igorsk	0:b56b6a05cad4	719	LWIP_UNUSED_ARG(proto);
igorsk	0:b56b6a05cad4	720
igorsk	0:b56b6a05cad4	721	AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
igorsk	0:b56b6a05cad4	722	if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
igorsk	0:b56b6a05cad4	723	UNTIMEOUT(check_idle, NULL);
igorsk	0:b56b6a05cad4	724	}
igorsk	0:b56b6a05cad4	725	}
igorsk	0:b56b6a05cad4	726
igorsk	0:b56b6a05cad4	727	/*
igorsk	0:b56b6a05cad4	728	* np_finished - a network protocol has finished using the link.
igorsk	0:b56b6a05cad4	729	*/
igorsk	0:b56b6a05cad4	730	void
igorsk	0:b56b6a05cad4	731	np_finished(int unit, u16_t proto)
igorsk	0:b56b6a05cad4	732	{
igorsk	0:b56b6a05cad4	733	LWIP_UNUSED_ARG(unit);
igorsk	0:b56b6a05cad4	734	LWIP_UNUSED_ARG(proto);
igorsk	0:b56b6a05cad4	735
igorsk	0:b56b6a05cad4	736	AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
igorsk	0:b56b6a05cad4	737	if (--num_np_open <= 0) {
igorsk	0:b56b6a05cad4	738	/* no further use for the link: shut up shop. */
igorsk	0:b56b6a05cad4	739	lcp_close(0, "No network protocols running");
igorsk	0:b56b6a05cad4	740	}
igorsk	0:b56b6a05cad4	741	}
igorsk	0:b56b6a05cad4	742
igorsk	0:b56b6a05cad4	743	/*
igorsk	0:b56b6a05cad4	744	* check_idle - check whether the link has been idle for long
igorsk	0:b56b6a05cad4	745	* enough that we can shut it down.
igorsk	0:b56b6a05cad4	746	*/
igorsk	0:b56b6a05cad4	747	static void
igorsk	0:b56b6a05cad4	748	check_idle(void *arg)
igorsk	0:b56b6a05cad4	749	{
igorsk	0:b56b6a05cad4	750	struct ppp_idle idle;
igorsk	0:b56b6a05cad4	751	u_short itime;
igorsk	0:b56b6a05cad4	752
igorsk	0:b56b6a05cad4	753	LWIP_UNUSED_ARG(arg);
igorsk	0:b56b6a05cad4	754	if (!get_idle_time(0, &idle)) {
igorsk	0:b56b6a05cad4	755	return;
igorsk	0:b56b6a05cad4	756	}
igorsk	0:b56b6a05cad4	757	itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
igorsk	0:b56b6a05cad4	758	if (itime >= ppp_settings.idle_time_limit) {
igorsk	0:b56b6a05cad4	759	/* link is idle: shut it down. */
igorsk	0:b56b6a05cad4	760	AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
igorsk	0:b56b6a05cad4	761	lcp_close(0, "Link inactive");
igorsk	0:b56b6a05cad4	762	} else {
igorsk	0:b56b6a05cad4	763	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
igorsk	0:b56b6a05cad4	764	}
igorsk	0:b56b6a05cad4	765	}
igorsk	0:b56b6a05cad4	766
igorsk	0:b56b6a05cad4	767	/*
igorsk	0:b56b6a05cad4	768	* connect_time_expired - log a message and close the connection.
igorsk	0:b56b6a05cad4	769	*/
igorsk	0:b56b6a05cad4	770	static void
igorsk	0:b56b6a05cad4	771	connect_time_expired(void *arg)
igorsk	0:b56b6a05cad4	772	{
igorsk	0:b56b6a05cad4	773	LWIP_UNUSED_ARG(arg);
igorsk	0:b56b6a05cad4	774
igorsk	0:b56b6a05cad4	775	AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
igorsk	0:b56b6a05cad4	776	lcp_close(0, "Connect time expired"); /* Close connection */
igorsk	0:b56b6a05cad4	777	}
igorsk	0:b56b6a05cad4	778
igorsk	0:b56b6a05cad4	779	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	780	/*
igorsk	0:b56b6a05cad4	781	* auth_check_options - called to check authentication options.
igorsk	0:b56b6a05cad4	782	*/
igorsk	0:b56b6a05cad4	783	void
igorsk	0:b56b6a05cad4	784	auth_check_options(void)
igorsk	0:b56b6a05cad4	785	{
igorsk	0:b56b6a05cad4	786	lcp_options *wo = &lcp_wantoptions[0];
igorsk	0:b56b6a05cad4	787	int can_auth;
igorsk	0:b56b6a05cad4	788	ipcp_options *ipwo = &ipcp_wantoptions[0];
igorsk	0:b56b6a05cad4	789	u32_t remote;
igorsk	0:b56b6a05cad4	790
igorsk	0:b56b6a05cad4	791	/* Default our_name to hostname, and user to our_name */
igorsk	0:b56b6a05cad4	792	if (ppp_settings.our_name[0] == 0 \|\| ppp_settings.usehostname) {
igorsk	0:b56b6a05cad4	793	strcpy(ppp_settings.our_name, ppp_settings.hostname);
igorsk	0:b56b6a05cad4	794	}
igorsk	0:b56b6a05cad4	795
igorsk	0:b56b6a05cad4	796	if (ppp_settings.user[0] == 0) {
igorsk	0:b56b6a05cad4	797	strcpy(ppp_settings.user, ppp_settings.our_name);
igorsk	0:b56b6a05cad4	798	}
igorsk	0:b56b6a05cad4	799
igorsk	0:b56b6a05cad4	800	/* If authentication is required, ask peer for CHAP or PAP. */
igorsk	0:b56b6a05cad4	801	if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
igorsk	0:b56b6a05cad4	802	wo->neg_chap = 1;
igorsk	0:b56b6a05cad4	803	wo->neg_upap = 1;
igorsk	0:b56b6a05cad4	804	}
igorsk	0:b56b6a05cad4	805
igorsk	0:b56b6a05cad4	806	/*
igorsk	0:b56b6a05cad4	807	* Check whether we have appropriate secrets to use
igorsk	0:b56b6a05cad4	808	* to authenticate the peer.
igorsk	0:b56b6a05cad4	809	*/
igorsk	0:b56b6a05cad4	810	can_auth = wo->neg_upap && have_pap_secret();
igorsk	0:b56b6a05cad4	811	if (!can_auth && wo->neg_chap) {
igorsk	0:b56b6a05cad4	812	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
igorsk	0:b56b6a05cad4	813	can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
igorsk	0:b56b6a05cad4	814	}
igorsk	0:b56b6a05cad4	815
igorsk	0:b56b6a05cad4	816	if (ppp_settings.auth_required && !can_auth) {
igorsk	0:b56b6a05cad4	817	ppp_panic("No auth secret");
igorsk	0:b56b6a05cad4	818	}
igorsk	0:b56b6a05cad4	819	}
igorsk	0:b56b6a05cad4	820	#endif /* UNUSED */
igorsk	0:b56b6a05cad4	821
igorsk	0:b56b6a05cad4	822	/*
igorsk	0:b56b6a05cad4	823	* auth_reset - called when LCP is starting negotiations to recheck
igorsk	0:b56b6a05cad4	824	* authentication options, i.e. whether we have appropriate secrets
igorsk	0:b56b6a05cad4	825	* to use for authenticating ourselves and/or the peer.
igorsk	0:b56b6a05cad4	826	*/
igorsk	0:b56b6a05cad4	827	void
igorsk	0:b56b6a05cad4	828	auth_reset(int unit)
igorsk	0:b56b6a05cad4	829	{
igorsk	0:b56b6a05cad4	830	lcp_options *go = &lcp_gotoptions[unit];
igorsk	0:b56b6a05cad4	831	lcp_options *ao = &lcp_allowoptions[0];
igorsk	0:b56b6a05cad4	832	ipcp_options *ipwo = &ipcp_wantoptions[0];
igorsk	0:b56b6a05cad4	833	u32_t remote;
igorsk	0:b56b6a05cad4	834
igorsk	0:b56b6a05cad4	835	AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
igorsk	0:b56b6a05cad4	836	ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 \|\| get_pap_passwd(unit, NULL, NULL));
igorsk	0:b56b6a05cad4	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)/;
igorsk	0:b56b6a05cad4	838
igorsk	0:b56b6a05cad4	839	if (go->neg_upap && !have_pap_secret()) {
igorsk	0:b56b6a05cad4	840	go->neg_upap = 0;
igorsk	0:b56b6a05cad4	841	}
igorsk	0:b56b6a05cad4	842	if (go->neg_chap) {
igorsk	0:b56b6a05cad4	843	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
igorsk	0:b56b6a05cad4	844	if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
igorsk	0:b56b6a05cad4	845	go->neg_chap = 0;
igorsk	0:b56b6a05cad4	846	}
igorsk	0:b56b6a05cad4	847	}
igorsk	0:b56b6a05cad4	848	}
igorsk	0:b56b6a05cad4	849
igorsk	0:b56b6a05cad4	850	#if PAP_SUPPORT
igorsk	0:b56b6a05cad4	851	/*
igorsk	0:b56b6a05cad4	852	* check_passwd - Check the user name and passwd against the PAP secrets
igorsk	0:b56b6a05cad4	853	* file. If requested, also check against the system password database,
igorsk	0:b56b6a05cad4	854	* and login the user if OK.
igorsk	0:b56b6a05cad4	855	*
igorsk	0:b56b6a05cad4	856	* returns:
igorsk	0:b56b6a05cad4	857	* UPAP_AUTHNAK: Authentication failed.
igorsk	0:b56b6a05cad4	858	* UPAP_AUTHACK: Authentication succeeded.
igorsk	0:b56b6a05cad4	859	* In either case, msg points to an appropriate message.
igorsk	0:b56b6a05cad4	860	*/
igorsk	0:b56b6a05cad4	861	u_char
igorsk	0:b56b6a05cad4	862	check_passwd( int unit, char auser, int userlen, char apasswd, int passwdlen, char *msg, int msglen)
igorsk	0:b56b6a05cad4	863	{
igorsk	0:b56b6a05cad4	864	#if 1 /* XXX Assume all entries OK. */
igorsk	0:b56b6a05cad4	865	LWIP_UNUSED_ARG(unit);
igorsk	0:b56b6a05cad4	866	LWIP_UNUSED_ARG(auser);
igorsk	0:b56b6a05cad4	867	LWIP_UNUSED_ARG(userlen);
igorsk	0:b56b6a05cad4	868	LWIP_UNUSED_ARG(apasswd);
igorsk	0:b56b6a05cad4	869	LWIP_UNUSED_ARG(passwdlen);
igorsk	0:b56b6a05cad4	870	LWIP_UNUSED_ARG(msglen);
igorsk	0:b56b6a05cad4	871	msg = (char ) 0;
igorsk	0:b56b6a05cad4	872	return UPAP_AUTHACK; /* XXX Assume all entries OK. */
igorsk	0:b56b6a05cad4	873	#else
igorsk	0:b56b6a05cad4	874	u_char ret = 0;
igorsk	0:b56b6a05cad4	875	struct wordlist *addrs = NULL;
igorsk	0:b56b6a05cad4	876	char passwd[256], user[256];
igorsk	0:b56b6a05cad4	877	char secret[MAXWORDLEN];
igorsk	0:b56b6a05cad4	878	static u_short attempts = 0;
igorsk	0:b56b6a05cad4	879
igorsk	0:b56b6a05cad4	880	/*
igorsk	0:b56b6a05cad4	881	* Make copies of apasswd and auser, then null-terminate them.
igorsk	0:b56b6a05cad4	882	*/
igorsk	0:b56b6a05cad4	883	BCOPY(apasswd, passwd, passwdlen);
igorsk	0:b56b6a05cad4	884	passwd[passwdlen] = '\0';
igorsk	0:b56b6a05cad4	885	BCOPY(auser, user, userlen);
igorsk	0:b56b6a05cad4	886	user[userlen] = '\0';
igorsk	0:b56b6a05cad4	887	msg = (char ) 0;
igorsk	0:b56b6a05cad4	888
igorsk	0:b56b6a05cad4	889	/* XXX Validate user name and password. */
igorsk	0:b56b6a05cad4	890	ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
igorsk	0:b56b6a05cad4	891
igorsk	0:b56b6a05cad4	892	if (ret == UPAP_AUTHNAK) {
igorsk	0:b56b6a05cad4	893	if (msg == (char ) 0) {
igorsk	0:b56b6a05cad4	894	*msg = "Login incorrect";
igorsk	0:b56b6a05cad4	895	}
igorsk	0:b56b6a05cad4	896	msglen = strlen(msg);
igorsk	0:b56b6a05cad4	897	/*
igorsk	0:b56b6a05cad4	898	* Frustrate passwd stealer programs.
igorsk	0:b56b6a05cad4	899	* Allow 10 tries, but start backing off after 3 (stolen from login).
igorsk	0:b56b6a05cad4	900	* On 10'th, drop the connection.
igorsk	0:b56b6a05cad4	901	*/
igorsk	0:b56b6a05cad4	902	if (attempts++ >= 10) {
igorsk	0:b56b6a05cad4	903	AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
igorsk	0:b56b6a05cad4	904	/ppp_panic("Excess Bad Logins");/
igorsk	0:b56b6a05cad4	905	}
igorsk	0:b56b6a05cad4	906	if (attempts > 3) {
igorsk	0:b56b6a05cad4	907	/* @todo: this was sleep(), i.e. seconds, not milliseconds
igorsk	0:b56b6a05cad4	908	* I don't think we really need this in lwIP - we would block tcpip_thread!
igorsk	0:b56b6a05cad4	909	*/
igorsk	0:b56b6a05cad4	910	/sys_msleep((attempts - 3) 5);*/
igorsk	0:b56b6a05cad4	911	}
igorsk	0:b56b6a05cad4	912	if (addrs != NULL) {
igorsk	0:b56b6a05cad4	913	free_wordlist(addrs);
igorsk	0:b56b6a05cad4	914	}
igorsk	0:b56b6a05cad4	915	} else {
igorsk	0:b56b6a05cad4	916	attempts = 0; /* Reset count */
igorsk	0:b56b6a05cad4	917	if (msg == (char ) 0) {
igorsk	0:b56b6a05cad4	918	*msg = "Login ok";
igorsk	0:b56b6a05cad4	919	}
igorsk	0:b56b6a05cad4	920	msglen = strlen(msg);
igorsk	0:b56b6a05cad4	921	set_allowed_addrs(unit, addrs);
igorsk	0:b56b6a05cad4	922	}
igorsk	0:b56b6a05cad4	923
igorsk	0:b56b6a05cad4	924	BZERO(passwd, sizeof(passwd));
igorsk	0:b56b6a05cad4	925	BZERO(secret, sizeof(secret));
igorsk	0:b56b6a05cad4	926
igorsk	0:b56b6a05cad4	927	return ret;
igorsk	0:b56b6a05cad4	928	#endif
igorsk	0:b56b6a05cad4	929	}
igorsk	0:b56b6a05cad4	930	#endif /* PAP_SUPPORT */
igorsk	0:b56b6a05cad4	931
igorsk	0:b56b6a05cad4	932	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	933	/*
igorsk	0:b56b6a05cad4	934	* This function is needed for PAM.
igorsk	0:b56b6a05cad4	935	*/
igorsk	0:b56b6a05cad4	936
igorsk	0:b56b6a05cad4	937	#ifdef USE_PAM
igorsk	0:b56b6a05cad4	938
igorsk	0:b56b6a05cad4	939	/* lwip does not support PAM*/
igorsk	0:b56b6a05cad4	940
igorsk	0:b56b6a05cad4	941	#endif /* USE_PAM */
igorsk	0:b56b6a05cad4	942
igorsk	0:b56b6a05cad4	943	#endif /* UNUSED */
igorsk	0:b56b6a05cad4	944
igorsk	0:b56b6a05cad4	945
igorsk	0:b56b6a05cad4	946	#if 0 /* UNUSED */
igorsk	0:b56b6a05cad4	947	/*
igorsk	0:b56b6a05cad4	948	* plogin - Check the user name and password against the system
igorsk	0:b56b6a05cad4	949	* password database, and login the user if OK.
igorsk	0:b56b6a05cad4	950	*
igorsk	0:b56b6a05cad4	951	* returns:
igorsk	0:b56b6a05cad4	952	* UPAP_AUTHNAK: Login failed.
igorsk	0:b56b6a05cad4	953	* UPAP_AUTHACK: Login succeeded.
igorsk	0:b56b6a05cad4	954	* In either case, msg points to an appropriate message.
igorsk	0:b56b6a05cad4	955	*/
igorsk	0:b56b6a05cad4	956	static int
igorsk	0:b56b6a05cad4	957	plogin(char user, char passwd, char *msg, int msglen)
igorsk	0:b56b6a05cad4	958	{
igorsk	0:b56b6a05cad4	959
igorsk	0:b56b6a05cad4	960	LWIP_UNUSED_ARG(user);
igorsk	0:b56b6a05cad4	961	LWIP_UNUSED_ARG(passwd);
igorsk	0:b56b6a05cad4	962	LWIP_UNUSED_ARG(msg);
igorsk	0:b56b6a05cad4	963	LWIP_UNUSED_ARG(msglen);
igorsk	0:b56b6a05cad4	964
igorsk	0:b56b6a05cad4	965
igorsk	0:b56b6a05cad4	966	/* The new lines are here align the file when
igorsk	0:b56b6a05cad4	967	* compared against the pppd 2.3.11 code */
igorsk	0:b56b6a05cad4	968
igorsk	0:b56b6a05cad4	969
igorsk	0:b56b6a05cad4	970
igorsk	0:b56b6a05cad4	971
igorsk	0:b56b6a05cad4	972
igorsk	0:b56b6a05cad4	973
igorsk	0:b56b6a05cad4	974
igorsk	0:b56b6a05cad4	975
igorsk	0:b56b6a05cad4	976
igorsk	0:b56b6a05cad4	977
igorsk	0:b56b6a05cad4	978
igorsk	0:b56b6a05cad4	979
igorsk	0:b56b6a05cad4	980
igorsk	0:b56b6a05cad4	981
igorsk	0:b56b6a05cad4	982
igorsk	0:b56b6a05cad4	983
igorsk	0:b56b6a05cad4	984	/* XXX Fail until we decide that we want to support logins. */
igorsk	0:b56b6a05cad4	985	return (UPAP_AUTHNAK);
igorsk	0:b56b6a05cad4	986	}
igorsk	0:b56b6a05cad4	987	#endif
igorsk	0:b56b6a05cad4	988
igorsk	0:b56b6a05cad4	989
igorsk	0:b56b6a05cad4	990
igorsk	0:b56b6a05cad4	991	/*
igorsk	0:b56b6a05cad4	992	* plogout - Logout the user.
igorsk	0:b56b6a05cad4	993	*/
igorsk	0:b56b6a05cad4	994	static void
igorsk	0:b56b6a05cad4	995	plogout(void)
igorsk	0:b56b6a05cad4	996	{
igorsk	0:b56b6a05cad4	997	logged_in = 0;
igorsk	0:b56b6a05cad4	998	}
igorsk	0:b56b6a05cad4	999
igorsk	0:b56b6a05cad4	1000	/*
igorsk	0:b56b6a05cad4	1001	* null_login - Check if a username of "" and a password of "" are
igorsk	0:b56b6a05cad4	1002	* acceptable, and iff so, set the list of acceptable IP addresses
igorsk	0:b56b6a05cad4	1003	* and return 1.
igorsk	0:b56b6a05cad4	1004	*/
igorsk	0:b56b6a05cad4	1005	static int
igorsk	0:b56b6a05cad4	1006	null_login(int unit)
igorsk	0:b56b6a05cad4	1007	{
igorsk	0:b56b6a05cad4	1008	LWIP_UNUSED_ARG(unit);
igorsk	0:b56b6a05cad4	1009	/* XXX Fail until we decide that we want to support logins. */
igorsk	0:b56b6a05cad4	1010	return 0;
igorsk	0:b56b6a05cad4	1011	}
igorsk	0:b56b6a05cad4	1012
igorsk	0:b56b6a05cad4	1013
igorsk	0:b56b6a05cad4	1014	/*
igorsk	0:b56b6a05cad4	1015	* get_pap_passwd - get a password for authenticating ourselves with
igorsk	0:b56b6a05cad4	1016	* our peer using PAP. Returns 1 on success, 0 if no suitable password
igorsk	0:b56b6a05cad4	1017	* could be found.
igorsk	0:b56b6a05cad4	1018	*/
igorsk	0:b56b6a05cad4	1019	static int
igorsk	0:b56b6a05cad4	1020	get_pap_passwd(int unit, char user, char passwd)
igorsk	0:b56b6a05cad4	1021	{
igorsk	0:b56b6a05cad4	1022	LWIP_UNUSED_ARG(unit);
igorsk	0:b56b6a05cad4	1023	/* normally we would reject PAP if no password is provided,
igorsk	0:b56b6a05cad4	1024	but this causes problems with some providers (like CHT in Taiwan)
igorsk	0:b56b6a05cad4	1025	who incorrectly request PAP and expect a bogus/empty password, so
igorsk	0:b56b6a05cad4	1026	always provide a default user/passwd of "none"/"none"
igorsk	0:b56b6a05cad4	1027
igorsk	0:b56b6a05cad4	1028	@todo: This should be configured by the user, instead of being hardcoded here!
igorsk	0:b56b6a05cad4	1029	*/
igorsk	0:b56b6a05cad4	1030	if(user) {
igorsk	0:b56b6a05cad4	1031	strcpy(user, "none");
igorsk	0:b56b6a05cad4	1032	}
igorsk	0:b56b6a05cad4	1033	if(passwd) {
igorsk	0:b56b6a05cad4	1034	strcpy(passwd, "none");
igorsk	0:b56b6a05cad4	1035	}
igorsk	0:b56b6a05cad4	1036	return 1;
igorsk	0:b56b6a05cad4	1037	}
igorsk	0:b56b6a05cad4	1038
igorsk	0:b56b6a05cad4	1039	/*
igorsk	0:b56b6a05cad4	1040	* have_pap_secret - check whether we have a PAP file with any
igorsk	0:b56b6a05cad4	1041	* secrets that we could possibly use for authenticating the peer.
igorsk	0:b56b6a05cad4	1042	*/
igorsk	0:b56b6a05cad4	1043	static int
igorsk	0:b56b6a05cad4	1044	have_pap_secret(void)
igorsk	0:b56b6a05cad4	1045	{
igorsk	0:b56b6a05cad4	1046	/* XXX Fail until we set up our passwords. */
igorsk	0:b56b6a05cad4	1047	return 0;
igorsk	0:b56b6a05cad4	1048	}
igorsk	0:b56b6a05cad4	1049
igorsk	0:b56b6a05cad4	1050	/*
igorsk	0:b56b6a05cad4	1051	* have_chap_secret - check whether we have a CHAP file with a
igorsk	0:b56b6a05cad4	1052	* secret that we could possibly use for authenticating `client'
igorsk	0:b56b6a05cad4	1053	* on `server'. Either can be the null string, meaning we don't
igorsk	0:b56b6a05cad4	1054	* know the identity yet.
igorsk	0:b56b6a05cad4	1055	*/
igorsk	0:b56b6a05cad4	1056	static int
igorsk	0:b56b6a05cad4	1057	have_chap_secret(char client, char server, u32_t remote)
igorsk	0:b56b6a05cad4	1058	{
igorsk	0:b56b6a05cad4	1059	LWIP_UNUSED_ARG(client);
igorsk	0:b56b6a05cad4	1060	LWIP_UNUSED_ARG(server);
igorsk	0:b56b6a05cad4	1061	LWIP_UNUSED_ARG(remote);
igorsk	0:b56b6a05cad4	1062
igorsk	0:b56b6a05cad4	1063	/* XXX Fail until we set up our passwords. */
igorsk	0:b56b6a05cad4	1064	return 0;
igorsk	0:b56b6a05cad4	1065	}
igorsk	0:b56b6a05cad4	1066	#if CHAP_SUPPORT
igorsk	0:b56b6a05cad4	1067
igorsk	0:b56b6a05cad4	1068	/*
igorsk	0:b56b6a05cad4	1069	* get_secret - open the CHAP secret file and return the secret
igorsk	0:b56b6a05cad4	1070	* for authenticating the given client on the given server.
igorsk	0:b56b6a05cad4	1071	* (We could be either client or server).
igorsk	0:b56b6a05cad4	1072	*/
igorsk	0:b56b6a05cad4	1073	int
igorsk	0:b56b6a05cad4	1074	get_secret(int unit, char client, char server, char secret, int secret_len, int save_addrs)
igorsk	0:b56b6a05cad4	1075	{
igorsk	0:b56b6a05cad4	1076	#if 1
igorsk	0:b56b6a05cad4	1077	int len;
igorsk	0:b56b6a05cad4	1078	struct wordlist *addrs;
igorsk	0:b56b6a05cad4	1079
igorsk	0:b56b6a05cad4	1080	LWIP_UNUSED_ARG(unit);
igorsk	0:b56b6a05cad4	1081	LWIP_UNUSED_ARG(server);
igorsk	0:b56b6a05cad4	1082	LWIP_UNUSED_ARG(save_addrs);
igorsk	0:b56b6a05cad4	1083
igorsk	0:b56b6a05cad4	1084	addrs = NULL;
igorsk	0:b56b6a05cad4	1085
igorsk	0:b56b6a05cad4	1086	if(!client \|\| !client[0] \|\| strcmp(client, ppp_settings.user)) {
igorsk	0:b56b6a05cad4	1087	return 0;
igorsk	0:b56b6a05cad4	1088	}
igorsk	0:b56b6a05cad4	1089
igorsk	0:b56b6a05cad4	1090	len = (int)strlen(ppp_settings.passwd);
igorsk	0:b56b6a05cad4	1091	if (len > MAXSECRETLEN) {
igorsk	0:b56b6a05cad4	1092	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
igorsk	0:b56b6a05cad4	1093	len = MAXSECRETLEN;
igorsk	0:b56b6a05cad4	1094	}
igorsk	0:b56b6a05cad4	1095
igorsk	0:b56b6a05cad4	1096	BCOPY(ppp_settings.passwd, secret, len);
igorsk	0:b56b6a05cad4	1097	*secret_len = len;
igorsk	0:b56b6a05cad4	1098
igorsk	0:b56b6a05cad4	1099	return 1;
igorsk	0:b56b6a05cad4	1100	#else
igorsk	0:b56b6a05cad4	1101	int ret = 0, len;
igorsk	0:b56b6a05cad4	1102	struct wordlist *addrs;
igorsk	0:b56b6a05cad4	1103	char secbuf[MAXWORDLEN];
igorsk	0:b56b6a05cad4	1104
igorsk	0:b56b6a05cad4	1105	addrs = NULL;
igorsk	0:b56b6a05cad4	1106	secbuf[0] = 0;
igorsk	0:b56b6a05cad4	1107
igorsk	0:b56b6a05cad4	1108	/* XXX Find secret. */
igorsk	0:b56b6a05cad4	1109	if (ret < 0) {
igorsk	0:b56b6a05cad4	1110	return 0;
igorsk	0:b56b6a05cad4	1111	}
igorsk	0:b56b6a05cad4	1112
igorsk	0:b56b6a05cad4	1113	if (save_addrs) {
igorsk	0:b56b6a05cad4	1114	set_allowed_addrs(unit, addrs);
igorsk	0:b56b6a05cad4	1115	}
igorsk	0:b56b6a05cad4	1116
igorsk	0:b56b6a05cad4	1117	len = strlen(secbuf);
igorsk	0:b56b6a05cad4	1118	if (len > MAXSECRETLEN) {
igorsk	0:b56b6a05cad4	1119	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
igorsk	0:b56b6a05cad4	1120	len = MAXSECRETLEN;
igorsk	0:b56b6a05cad4	1121	}
igorsk	0:b56b6a05cad4	1122
igorsk	0:b56b6a05cad4	1123	BCOPY(secbuf, secret, len);
igorsk	0:b56b6a05cad4	1124	BZERO(secbuf, sizeof(secbuf));
igorsk	0:b56b6a05cad4	1125	*secret_len = len;
igorsk	0:b56b6a05cad4	1126
igorsk	0:b56b6a05cad4	1127	return 1;
igorsk	0:b56b6a05cad4	1128	#endif
igorsk	0:b56b6a05cad4	1129	}
igorsk	0:b56b6a05cad4	1130	#endif /* CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	1131
igorsk	0:b56b6a05cad4	1132
igorsk	0:b56b6a05cad4	1133	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	1134	/*
igorsk	0:b56b6a05cad4	1135	* set_allowed_addrs() - set the list of allowed addresses.
igorsk	0:b56b6a05cad4	1136	*/
igorsk	0:b56b6a05cad4	1137	static void
igorsk	0:b56b6a05cad4	1138	set_allowed_addrs(int unit, struct wordlist *addrs)
igorsk	0:b56b6a05cad4	1139	{
igorsk	0:b56b6a05cad4	1140	if (addresses[unit] != NULL) {
igorsk	0:b56b6a05cad4	1141	free_wordlist(addresses[unit]);
igorsk	0:b56b6a05cad4	1142	}
igorsk	0:b56b6a05cad4	1143	addresses[unit] = addrs;
igorsk	0:b56b6a05cad4	1144
igorsk	0:b56b6a05cad4	1145	#if 0
igorsk	0:b56b6a05cad4	1146	/*
igorsk	0:b56b6a05cad4	1147	* If there's only one authorized address we might as well
igorsk	0:b56b6a05cad4	1148	* ask our peer for that one right away
igorsk	0:b56b6a05cad4	1149	*/
igorsk	0:b56b6a05cad4	1150	if (addrs != NULL && addrs->next == NULL) {
igorsk	0:b56b6a05cad4	1151	char *p = addrs->word;
igorsk	0:b56b6a05cad4	1152	struct ipcp_options *wo = &ipcp_wantoptions[unit];
igorsk	0:b56b6a05cad4	1153	u32_t a;
igorsk	0:b56b6a05cad4	1154	struct hostent *hp;
igorsk	0:b56b6a05cad4	1155
igorsk	0:b56b6a05cad4	1156	if (wo->hisaddr == 0 && p != '!' && p != '-' && strchr(p, '/') == NULL) {
igorsk	0:b56b6a05cad4	1157	hp = gethostbyname(p);
igorsk	0:b56b6a05cad4	1158	if (hp != NULL && hp->h_addrtype == AF_INET) {
igorsk	0:b56b6a05cad4	1159	a = (u32_t )hp->h_addr;
igorsk	0:b56b6a05cad4	1160	} else {
igorsk	0:b56b6a05cad4	1161	a = inet_addr(p);
igorsk	0:b56b6a05cad4	1162	}
igorsk	0:b56b6a05cad4	1163	if (a != (u32_t) -1) {
igorsk	0:b56b6a05cad4	1164	wo->hisaddr = a;
igorsk	0:b56b6a05cad4	1165	}
igorsk	0:b56b6a05cad4	1166	}
igorsk	0:b56b6a05cad4	1167	}
igorsk	0:b56b6a05cad4	1168	#endif
igorsk	0:b56b6a05cad4	1169	}
igorsk	0:b56b6a05cad4	1170	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	1171
igorsk	0:b56b6a05cad4	1172	/*
igorsk	0:b56b6a05cad4	1173	* auth_ip_addr - check whether the peer is authorized to use
igorsk	0:b56b6a05cad4	1174	* a given IP address. Returns 1 if authorized, 0 otherwise.
igorsk	0:b56b6a05cad4	1175	*/
igorsk	0:b56b6a05cad4	1176	int
igorsk	0:b56b6a05cad4	1177	auth_ip_addr(int unit, u32_t addr)
igorsk	0:b56b6a05cad4	1178	{
igorsk	0:b56b6a05cad4	1179	return ip_addr_check(addr, addresses[unit]);
igorsk	0:b56b6a05cad4	1180	}
igorsk	0:b56b6a05cad4	1181
igorsk	0:b56b6a05cad4	1182	static int /* @todo: integrate this funtion into auth_ip_addr()*/
igorsk	0:b56b6a05cad4	1183	ip_addr_check(u32_t addr, struct wordlist *addrs)
igorsk	0:b56b6a05cad4	1184	{
igorsk	0:b56b6a05cad4	1185	/* don't allow loopback or multicast address */
igorsk	0:b56b6a05cad4	1186	if (bad_ip_adrs(addr)) {
igorsk	0:b56b6a05cad4	1187	return 0;
igorsk	0:b56b6a05cad4	1188	}
igorsk	0:b56b6a05cad4	1189
igorsk	0:b56b6a05cad4	1190	if (addrs == NULL) {
igorsk	0:b56b6a05cad4	1191	return !ppp_settings.auth_required; /* no addresses authorized */
igorsk	0:b56b6a05cad4	1192	}
igorsk	0:b56b6a05cad4	1193
igorsk	0:b56b6a05cad4	1194	/* XXX All other addresses allowed. */
igorsk	0:b56b6a05cad4	1195	return 1;
igorsk	0:b56b6a05cad4	1196	}
igorsk	0:b56b6a05cad4	1197
igorsk	0:b56b6a05cad4	1198	/*
igorsk	0:b56b6a05cad4	1199	* bad_ip_adrs - return 1 if the IP address is one we don't want
igorsk	0:b56b6a05cad4	1200	* to use, such as an address in the loopback net or a multicast address.
igorsk	0:b56b6a05cad4	1201	* addr is in network byte order.
igorsk	0:b56b6a05cad4	1202	*/
igorsk	0:b56b6a05cad4	1203	int
igorsk	0:b56b6a05cad4	1204	bad_ip_adrs(u32_t addr)
igorsk	0:b56b6a05cad4	1205	{
igorsk	0:b56b6a05cad4	1206	addr = ntohl(addr);
igorsk	0:b56b6a05cad4	1207	return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
igorsk	0:b56b6a05cad4	1208	\|\| IN_MULTICAST(addr) \|\| IN_BADCLASS(addr);
igorsk	0:b56b6a05cad4	1209	}
igorsk	0:b56b6a05cad4	1210
igorsk	0:b56b6a05cad4	1211	#if 0 /* UNUSED / / PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	1212	/*
igorsk	0:b56b6a05cad4	1213	* some_ip_ok - check a wordlist to see if it authorizes any
igorsk	0:b56b6a05cad4	1214	* IP address(es).
igorsk	0:b56b6a05cad4	1215	*/
igorsk	0:b56b6a05cad4	1216	static int
igorsk	0:b56b6a05cad4	1217	some_ip_ok(struct wordlist *addrs)
igorsk	0:b56b6a05cad4	1218	{
igorsk	0:b56b6a05cad4	1219	for (; addrs != 0; addrs = addrs->next) {
igorsk	0:b56b6a05cad4	1220	if (addrs->word[0] == '-')
igorsk	0:b56b6a05cad4	1221	break;
igorsk	0:b56b6a05cad4	1222	if (addrs->word[0] != '!')
igorsk	0:b56b6a05cad4	1223	return 1; /* some IP address is allowed */
igorsk	0:b56b6a05cad4	1224	}
igorsk	0:b56b6a05cad4	1225	return 0;
igorsk	0:b56b6a05cad4	1226	}
igorsk	0:b56b6a05cad4	1227
igorsk	0:b56b6a05cad4	1228	/*
igorsk	0:b56b6a05cad4	1229	* check_access - complain if a secret file has too-liberal permissions.
igorsk	0:b56b6a05cad4	1230	*/
igorsk	0:b56b6a05cad4	1231	static void
igorsk	0:b56b6a05cad4	1232	check_access(FILE f, char filename)
igorsk	0:b56b6a05cad4	1233	{
igorsk	0:b56b6a05cad4	1234	struct stat sbuf;
igorsk	0:b56b6a05cad4	1235
igorsk	0:b56b6a05cad4	1236	if (fstat(fileno(f), &sbuf) < 0) {
igorsk	0:b56b6a05cad4	1237	warn("cannot stat secret file %s: %m", filename);
igorsk	0:b56b6a05cad4	1238	} else if ((sbuf.st_mode & (S_IRWXG \| S_IRWXO)) != 0) {
igorsk	0:b56b6a05cad4	1239	warn("Warning - secret file %s has world and/or group access",
igorsk	0:b56b6a05cad4	1240	filename);
igorsk	0:b56b6a05cad4	1241	}
igorsk	0:b56b6a05cad4	1242	}
igorsk	0:b56b6a05cad4	1243
igorsk	0:b56b6a05cad4	1244
igorsk	0:b56b6a05cad4	1245	/*
igorsk	0:b56b6a05cad4	1246	* scan_authfile - Scan an authorization file for a secret suitable
igorsk	0:b56b6a05cad4	1247	* for authenticating `client' on `server'. The return value is -1
igorsk	0:b56b6a05cad4	1248	* if no secret is found, otherwise >= 0. The return value has
igorsk	0:b56b6a05cad4	1249	* NONWILD_CLIENT set if the secret didn't have "*" for the client, and
igorsk	0:b56b6a05cad4	1250	* NONWILD_SERVER set if the secret didn't have "*" for the server.
igorsk	0:b56b6a05cad4	1251	* Any following words on the line up to a "--" (i.e. address authorization
igorsk	0:b56b6a05cad4	1252	* info) are placed in a wordlist and returned in *addrs. Any
igorsk	0:b56b6a05cad4	1253	* following words (extra options) are placed in a wordlist and
igorsk	0:b56b6a05cad4	1254	* returned in *opts.
igorsk	0:b56b6a05cad4	1255	* We assume secret is NULL or points to MAXWORDLEN bytes of space.
igorsk	0:b56b6a05cad4	1256	*/
igorsk	0:b56b6a05cad4	1257	static int
igorsk	0:b56b6a05cad4	1258	scan_authfile(FILE f, char client, char server, char secret, struct wordlist addrs, struct wordlist opts, char *filename)
igorsk	0:b56b6a05cad4	1259	{
igorsk	0:b56b6a05cad4	1260	/* We do not (currently) need this in lwip */
igorsk	0:b56b6a05cad4	1261	return 0; /* dummy */
igorsk	0:b56b6a05cad4	1262	}
igorsk	0:b56b6a05cad4	1263	/*
igorsk	0:b56b6a05cad4	1264	* free_wordlist - release memory allocated for a wordlist.
igorsk	0:b56b6a05cad4	1265	*/
igorsk	0:b56b6a05cad4	1266	static void
igorsk	0:b56b6a05cad4	1267	free_wordlist(struct wordlist *wp)
igorsk	0:b56b6a05cad4	1268	{
igorsk	0:b56b6a05cad4	1269	struct wordlist *next;
igorsk	0:b56b6a05cad4	1270
igorsk	0:b56b6a05cad4	1271	while (wp != NULL) {
igorsk	0:b56b6a05cad4	1272	next = wp->next;
igorsk	0:b56b6a05cad4	1273	free(wp);
igorsk	0:b56b6a05cad4	1274	wp = next;
igorsk	0:b56b6a05cad4	1275	}
igorsk	0:b56b6a05cad4	1276	}
igorsk	0:b56b6a05cad4	1277
igorsk	0:b56b6a05cad4	1278	/*
igorsk	0:b56b6a05cad4	1279	* auth_script_done - called when the auth-up or auth-down script
igorsk	0:b56b6a05cad4	1280	* has finished.
igorsk	0:b56b6a05cad4	1281	*/
igorsk	0:b56b6a05cad4	1282	static void
igorsk	0:b56b6a05cad4	1283	auth_script_done(void *arg)
igorsk	0:b56b6a05cad4	1284	{
igorsk	0:b56b6a05cad4	1285	auth_script_pid = 0;
igorsk	0:b56b6a05cad4	1286	switch (auth_script_state) {
igorsk	0:b56b6a05cad4	1287	case s_up:
igorsk	0:b56b6a05cad4	1288	if (auth_state == s_down) {
igorsk	0:b56b6a05cad4	1289	auth_script_state = s_down;
igorsk	0:b56b6a05cad4	1290	auth_script(_PATH_AUTHDOWN);
igorsk	0:b56b6a05cad4	1291	}
igorsk	0:b56b6a05cad4	1292	break;
igorsk	0:b56b6a05cad4	1293	case s_down:
igorsk	0:b56b6a05cad4	1294	if (auth_state == s_up) {
igorsk	0:b56b6a05cad4	1295	auth_script_state = s_up;
igorsk	0:b56b6a05cad4	1296	auth_script(_PATH_AUTHUP);
igorsk	0:b56b6a05cad4	1297	}
igorsk	0:b56b6a05cad4	1298	break;
igorsk	0:b56b6a05cad4	1299	}
igorsk	0:b56b6a05cad4	1300	}
igorsk	0:b56b6a05cad4	1301
igorsk	0:b56b6a05cad4	1302	/*
igorsk	0:b56b6a05cad4	1303	* auth_script - execute a script with arguments
igorsk	0:b56b6a05cad4	1304	* interface-name peer-name real-user tty speed
igorsk	0:b56b6a05cad4	1305	*/
igorsk	0:b56b6a05cad4	1306	static void
igorsk	0:b56b6a05cad4	1307	auth_script(char *script)
igorsk	0:b56b6a05cad4	1308	{
igorsk	0:b56b6a05cad4	1309	char strspeed[32];
igorsk	0:b56b6a05cad4	1310	struct passwd *pw;
igorsk	0:b56b6a05cad4	1311	char struid[32];
igorsk	0:b56b6a05cad4	1312	char *user_name;
igorsk	0:b56b6a05cad4	1313	char *argv[8];
igorsk	0:b56b6a05cad4	1314
igorsk	0:b56b6a05cad4	1315	if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
igorsk	0:b56b6a05cad4	1316	user_name = pw->pw_name;
igorsk	0:b56b6a05cad4	1317	else {
igorsk	0:b56b6a05cad4	1318	slprintf(struid, sizeof(struid), "%d", getuid());
igorsk	0:b56b6a05cad4	1319	user_name = struid;
igorsk	0:b56b6a05cad4	1320	}
igorsk	0:b56b6a05cad4	1321	slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
igorsk	0:b56b6a05cad4	1322
igorsk	0:b56b6a05cad4	1323	argv[0] = script;
igorsk	0:b56b6a05cad4	1324	argv[1] = ifname;
igorsk	0:b56b6a05cad4	1325	argv[2] = peer_authname;
igorsk	0:b56b6a05cad4	1326	argv[3] = user_name;
igorsk	0:b56b6a05cad4	1327	argv[4] = devnam;
igorsk	0:b56b6a05cad4	1328	argv[5] = strspeed;
igorsk	0:b56b6a05cad4	1329	argv[6] = NULL;
igorsk	0:b56b6a05cad4	1330
igorsk	0:b56b6a05cad4	1331	auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
igorsk	0:b56b6a05cad4	1332	}
igorsk	0:b56b6a05cad4	1333	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
igorsk	0:b56b6a05cad4	1334	#endif /* PPP_SUPPORT */

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Type:	Program
Created:	29 Jun 2011
Imports:	167
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	3

lwip/netif/ppp/auth.c@0:b56b6a05cad4, 2011-06-29 (annotated)

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