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NetStack/lwip/netif/ppp/auth.c@0:1a61c61d0845, 2012-04-03 (annotated)

Committer:: dcoban
Date:: Tue Apr 03 18:43:13 2012 +0000
Revision:: 0:1a61c61d0845

Who changed what in which revision?

User	Revision	Line number	New contents of line
dcoban	0:1a61c61d0845	1	/*****************************************************************************
dcoban	0:1a61c61d0845	2	* auth.c - Network Authentication and Phase Control program file.
dcoban	0:1a61c61d0845	3	*
dcoban	0:1a61c61d0845	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
dcoban	0:1a61c61d0845	5	* Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
dcoban	0:1a61c61d0845	6	*
dcoban	0:1a61c61d0845	7	* The authors hereby grant permission to use, copy, modify, distribute,
dcoban	0:1a61c61d0845	8	* and license this software and its documentation for any purpose, provided
dcoban	0:1a61c61d0845	9	* that existing copyright notices are retained in all copies and that this
dcoban	0:1a61c61d0845	10	* notice and the following disclaimer are included verbatim in any
dcoban	0:1a61c61d0845	11	* distributions. No written agreement, license, or royalty fee is required
dcoban	0:1a61c61d0845	12	* for any of the authorized uses.
dcoban	0:1a61c61d0845	13	*
dcoban	0:1a61c61d0845	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
dcoban	0:1a61c61d0845	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
dcoban	0:1a61c61d0845	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
dcoban	0:1a61c61d0845	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
dcoban	0:1a61c61d0845	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
dcoban	0:1a61c61d0845	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
dcoban	0:1a61c61d0845	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
dcoban	0:1a61c61d0845	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
dcoban	0:1a61c61d0845	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
dcoban	0:1a61c61d0845	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
dcoban	0:1a61c61d0845	24	*
dcoban	0:1a61c61d0845	25	******************************************************************************
dcoban	0:1a61c61d0845	26	* REVISION HISTORY
dcoban	0:1a61c61d0845	27	*
dcoban	0:1a61c61d0845	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
dcoban	0:1a61c61d0845	29	* Ported to lwIP.
dcoban	0:1a61c61d0845	30	* 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
dcoban	0:1a61c61d0845	31	* Ported from public pppd code.
dcoban	0:1a61c61d0845	32	*****************************************************************************/
dcoban	0:1a61c61d0845	33	/*
dcoban	0:1a61c61d0845	34	* auth.c - PPP authentication and phase control.
dcoban	0:1a61c61d0845	35	*
dcoban	0:1a61c61d0845	36	* Copyright (c) 1993 The Australian National University.
dcoban	0:1a61c61d0845	37	* All rights reserved.
dcoban	0:1a61c61d0845	38	*
dcoban	0:1a61c61d0845	39	* Redistribution and use in source and binary forms are permitted
dcoban	0:1a61c61d0845	40	* provided that the above copyright notice and this paragraph are
dcoban	0:1a61c61d0845	41	* duplicated in all such forms and that any documentation,
dcoban	0:1a61c61d0845	42	* advertising materials, and other materials related to such
dcoban	0:1a61c61d0845	43	* distribution and use acknowledge that the software was developed
dcoban	0:1a61c61d0845	44	* by the Australian National University. The name of the University
dcoban	0:1a61c61d0845	45	* may not be used to endorse or promote products derived from this
dcoban	0:1a61c61d0845	46	* software without specific prior written permission.
dcoban	0:1a61c61d0845	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
dcoban	0:1a61c61d0845	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
dcoban	0:1a61c61d0845	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
dcoban	0:1a61c61d0845	50	*
dcoban	0:1a61c61d0845	51	* Copyright (c) 1989 Carnegie Mellon University.
dcoban	0:1a61c61d0845	52	* All rights reserved.
dcoban	0:1a61c61d0845	53	*
dcoban	0:1a61c61d0845	54	* Redistribution and use in source and binary forms are permitted
dcoban	0:1a61c61d0845	55	* provided that the above copyright notice and this paragraph are
dcoban	0:1a61c61d0845	56	* duplicated in all such forms and that any documentation,
dcoban	0:1a61c61d0845	57	* advertising materials, and other materials related to such
dcoban	0:1a61c61d0845	58	* distribution and use acknowledge that the software was developed
dcoban	0:1a61c61d0845	59	* by Carnegie Mellon University. The name of the
dcoban	0:1a61c61d0845	60	* University may not be used to endorse or promote products derived
dcoban	0:1a61c61d0845	61	* from this software without specific prior written permission.
dcoban	0:1a61c61d0845	62	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
dcoban	0:1a61c61d0845	63	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
dcoban	0:1a61c61d0845	64	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
dcoban	0:1a61c61d0845	65	*/
dcoban	0:1a61c61d0845	66
dcoban	0:1a61c61d0845	67	#include "lwip/opt.h"
dcoban	0:1a61c61d0845	68
dcoban	0:1a61c61d0845	69	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
dcoban	0:1a61c61d0845	70
dcoban	0:1a61c61d0845	71	#include "ppp.h"
dcoban	0:1a61c61d0845	72	#include "pppdebug.h"
dcoban	0:1a61c61d0845	73
dcoban	0:1a61c61d0845	74	#include "fsm.h"
dcoban	0:1a61c61d0845	75	#include "lcp.h"
dcoban	0:1a61c61d0845	76	#include "pap.h"
dcoban	0:1a61c61d0845	77	#include "chap.h"
dcoban	0:1a61c61d0845	78	#include "auth.h"
dcoban	0:1a61c61d0845	79	#include "ipcp.h"
dcoban	0:1a61c61d0845	80
dcoban	0:1a61c61d0845	81	#if CBCP_SUPPORT
dcoban	0:1a61c61d0845	82	#include "cbcp.h"
dcoban	0:1a61c61d0845	83	#endif /* CBCP_SUPPORT */
dcoban	0:1a61c61d0845	84
dcoban	0:1a61c61d0845	85	#include "lwip/inet.h"
dcoban	0:1a61c61d0845	86
dcoban	0:1a61c61d0845	87	#include <string.h>
dcoban	0:1a61c61d0845	88
dcoban	0:1a61c61d0845	89	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	90	/* Bits in scan_authfile return value */
dcoban	0:1a61c61d0845	91	#define NONWILD_SERVER 1
dcoban	0:1a61c61d0845	92	#define NONWILD_CLIENT 2
dcoban	0:1a61c61d0845	93
dcoban	0:1a61c61d0845	94	#define ISWILD(word) (word[0] == '*' && word[1] == 0)
dcoban	0:1a61c61d0845	95	#endif /* UNUSED */
dcoban	0:1a61c61d0845	96
dcoban	0:1a61c61d0845	97	#if PAP_SUPPORT \|\| CHAP_SUPPORT
dcoban	0:1a61c61d0845	98	/* The name by which the peer authenticated itself to us. */
dcoban	0:1a61c61d0845	99	static char peer_authname[MAXNAMELEN];
dcoban	0:1a61c61d0845	100	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	101
dcoban	0:1a61c61d0845	102	/* Records which authentication operations haven't completed yet. */
dcoban	0:1a61c61d0845	103	static int auth_pending[NUM_PPP];
dcoban	0:1a61c61d0845	104
dcoban	0:1a61c61d0845	105	/* Set if we have successfully called plogin() */
dcoban	0:1a61c61d0845	106	static int logged_in;
dcoban	0:1a61c61d0845	107
dcoban	0:1a61c61d0845	108	/* Set if we have run the /etc/ppp/auth-up script. */
dcoban	0:1a61c61d0845	109	static int did_authup; /* @todo, we don't need this in lwip*/
dcoban	0:1a61c61d0845	110
dcoban	0:1a61c61d0845	111	/* List of addresses which the peer may use. */
dcoban	0:1a61c61d0845	112	static struct wordlist *addresses[NUM_PPP];
dcoban	0:1a61c61d0845	113
dcoban	0:1a61c61d0845	114	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	115	/* Wordlist giving addresses which the peer may use
dcoban	0:1a61c61d0845	116	without authenticating itself. */
dcoban	0:1a61c61d0845	117	static struct wordlist *noauth_addrs;
dcoban	0:1a61c61d0845	118
dcoban	0:1a61c61d0845	119	/* Extra options to apply, from the secrets file entry for the peer. */
dcoban	0:1a61c61d0845	120	static struct wordlist *extra_options;
dcoban	0:1a61c61d0845	121	#endif /* UNUSED */
dcoban	0:1a61c61d0845	122
dcoban	0:1a61c61d0845	123	/* Number of network protocols which we have opened. */
dcoban	0:1a61c61d0845	124	static int num_np_open;
dcoban	0:1a61c61d0845	125
dcoban	0:1a61c61d0845	126	/* Number of network protocols which have come up. */
dcoban	0:1a61c61d0845	127	static int num_np_up;
dcoban	0:1a61c61d0845	128
dcoban	0:1a61c61d0845	129	#if PAP_SUPPORT \|\| CHAP_SUPPORT
dcoban	0:1a61c61d0845	130	/* Set if we got the contents of passwd[] from the pap-secrets file. */
dcoban	0:1a61c61d0845	131	static int passwd_from_file;
dcoban	0:1a61c61d0845	132	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	133
dcoban	0:1a61c61d0845	134	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	135	/* Set if we require authentication only because we have a default route. */
dcoban	0:1a61c61d0845	136	static bool default_auth;
dcoban	0:1a61c61d0845	137
dcoban	0:1a61c61d0845	138	/* Hook to enable a plugin to control the idle time limit */
dcoban	0:1a61c61d0845	139	int (idle_time_hook) __P((struct ppp_idle )) = NULL;
dcoban	0:1a61c61d0845	140
dcoban	0:1a61c61d0845	141	/* Hook for a plugin to say whether we can possibly authenticate any peer */
dcoban	0:1a61c61d0845	142	int (*pap_check_hook) __P((void)) = NULL;
dcoban	0:1a61c61d0845	143
dcoban	0:1a61c61d0845	144	/* Hook for a plugin to check the PAP user and password */
dcoban	0:1a61c61d0845	145	int (pap_auth_hook) __P((char user, char passwd, char *msgp,
dcoban	0:1a61c61d0845	146	struct wordlist **paddrs,
dcoban	0:1a61c61d0845	147	struct wordlist **popts)) = NULL;
dcoban	0:1a61c61d0845	148
dcoban	0:1a61c61d0845	149	/* Hook for a plugin to know about the PAP user logout */
dcoban	0:1a61c61d0845	150	void (*pap_logout_hook) __P((void)) = NULL;
dcoban	0:1a61c61d0845	151
dcoban	0:1a61c61d0845	152	/* Hook for a plugin to get the PAP password for authenticating us */
dcoban	0:1a61c61d0845	153	int (pap_passwd_hook) __P((char user, char *passwd)) = NULL;
dcoban	0:1a61c61d0845	154
dcoban	0:1a61c61d0845	155	/*
dcoban	0:1a61c61d0845	156	* This is used to ensure that we don't start an auth-up/down
dcoban	0:1a61c61d0845	157	* script while one is already running.
dcoban	0:1a61c61d0845	158	*/
dcoban	0:1a61c61d0845	159	enum script_state {
dcoban	0:1a61c61d0845	160	s_down,
dcoban	0:1a61c61d0845	161	s_up
dcoban	0:1a61c61d0845	162	};
dcoban	0:1a61c61d0845	163
dcoban	0:1a61c61d0845	164	static enum script_state auth_state = s_down;
dcoban	0:1a61c61d0845	165	static enum script_state auth_script_state = s_down;
dcoban	0:1a61c61d0845	166	static pid_t auth_script_pid = 0;
dcoban	0:1a61c61d0845	167
dcoban	0:1a61c61d0845	168	/*
dcoban	0:1a61c61d0845	169	* Option variables.
dcoban	0:1a61c61d0845	170	* lwip: some of these are present in the ppp_settings structure
dcoban	0:1a61c61d0845	171	*/
dcoban	0:1a61c61d0845	172	bool uselogin = 0; /* Use /etc/passwd for checking PAP */
dcoban	0:1a61c61d0845	173	bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
dcoban	0:1a61c61d0845	174	bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
dcoban	0:1a61c61d0845	175	bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
dcoban	0:1a61c61d0845	176	bool usehostname = 0; /* Use hostname for our_name */
dcoban	0:1a61c61d0845	177	bool auth_required = 0; /* Always require authentication from peer */
dcoban	0:1a61c61d0845	178	bool allow_any_ip = 0; /* Allow peer to use any IP address */
dcoban	0:1a61c61d0845	179	bool explicit_remote = 0; /* User specified explicit remote name */
dcoban	0:1a61c61d0845	180	char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
dcoban	0:1a61c61d0845	181
dcoban	0:1a61c61d0845	182	#endif /* UNUSED */
dcoban	0:1a61c61d0845	183
dcoban	0:1a61c61d0845	184	/* Bits in auth_pending[] */
dcoban	0:1a61c61d0845	185	#define PAP_WITHPEER 1
dcoban	0:1a61c61d0845	186	#define PAP_PEER 2
dcoban	0:1a61c61d0845	187	#define CHAP_WITHPEER 4
dcoban	0:1a61c61d0845	188	#define CHAP_PEER 8
dcoban	0:1a61c61d0845	189
dcoban	0:1a61c61d0845	190	/* @todo, move this somewhere */
dcoban	0:1a61c61d0845	191	/* Used for storing a sequence of words. Usually malloced. */
dcoban	0:1a61c61d0845	192	struct wordlist {
dcoban	0:1a61c61d0845	193	struct wordlist *next;
dcoban	0:1a61c61d0845	194	char word[1];
dcoban	0:1a61c61d0845	195	};
dcoban	0:1a61c61d0845	196
dcoban	0:1a61c61d0845	197
dcoban	0:1a61c61d0845	198	extern char crypt (const char , const char *);
dcoban	0:1a61c61d0845	199
dcoban	0:1a61c61d0845	200	/* Prototypes for procedures local to this file. */
dcoban	0:1a61c61d0845	201
dcoban	0:1a61c61d0845	202	static void network_phase (int);
dcoban	0:1a61c61d0845	203	static void check_idle (void *);
dcoban	0:1a61c61d0845	204	static void connect_time_expired (void *);
dcoban	0:1a61c61d0845	205	#if 0
dcoban	0:1a61c61d0845	206	static int plogin (char , char , char *, int );
dcoban	0:1a61c61d0845	207	#endif
dcoban	0:1a61c61d0845	208	static void plogout (void);
dcoban	0:1a61c61d0845	209	static int null_login (int);
dcoban	0:1a61c61d0845	210	static int get_pap_passwd (int, char , char );
dcoban	0:1a61c61d0845	211	static int have_pap_secret (void);
dcoban	0:1a61c61d0845	212	static int have_chap_secret (char , char , u32_t);
dcoban	0:1a61c61d0845	213	static int ip_addr_check (u32_t, struct wordlist *);
dcoban	0:1a61c61d0845	214
dcoban	0:1a61c61d0845	215	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	216	static int scan_authfile (FILE , char , char , char ,
dcoban	0:1a61c61d0845	217	struct wordlist , struct wordlist ,
dcoban	0:1a61c61d0845	218	char *);
dcoban	0:1a61c61d0845	219	static void free_wordlist (struct wordlist *);
dcoban	0:1a61c61d0845	220	static void auth_script (char *);
dcoban	0:1a61c61d0845	221	static void auth_script_done (void *);
dcoban	0:1a61c61d0845	222	static void set_allowed_addrs (int unit, struct wordlist *addrs);
dcoban	0:1a61c61d0845	223	static int some_ip_ok (struct wordlist *);
dcoban	0:1a61c61d0845	224	static int setupapfile (char **);
dcoban	0:1a61c61d0845	225	static int privgroup (char **);
dcoban	0:1a61c61d0845	226	static int set_noauth_addr (char **);
dcoban	0:1a61c61d0845	227	static void check_access (FILE , char );
dcoban	0:1a61c61d0845	228	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	229
dcoban	0:1a61c61d0845	230	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	231	/*
dcoban	0:1a61c61d0845	232	* Authentication-related options.
dcoban	0:1a61c61d0845	233	*/
dcoban	0:1a61c61d0845	234	option_t auth_options[] = {
dcoban	0:1a61c61d0845	235	{ "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
dcoban	0:1a61c61d0845	236	"Require PAP authentication from peer", 1, &auth_required },
dcoban	0:1a61c61d0845	237	{ "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
dcoban	0:1a61c61d0845	238	"Require PAP authentication from peer", 1, &auth_required },
dcoban	0:1a61c61d0845	239	{ "refuse-pap", o_bool, &refuse_pap,
dcoban	0:1a61c61d0845	240	"Don't agree to auth to peer with PAP", 1 },
dcoban	0:1a61c61d0845	241	{ "-pap", o_bool, &refuse_pap,
dcoban	0:1a61c61d0845	242	"Don't allow PAP authentication with peer", 1 },
dcoban	0:1a61c61d0845	243	{ "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
dcoban	0:1a61c61d0845	244	"Require CHAP authentication from peer", 1, &auth_required },
dcoban	0:1a61c61d0845	245	{ "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
dcoban	0:1a61c61d0845	246	"Require CHAP authentication from peer", 1, &auth_required },
dcoban	0:1a61c61d0845	247	{ "refuse-chap", o_bool, &refuse_chap,
dcoban	0:1a61c61d0845	248	"Don't agree to auth to peer with CHAP", 1 },
dcoban	0:1a61c61d0845	249	{ "-chap", o_bool, &refuse_chap,
dcoban	0:1a61c61d0845	250	"Don't allow CHAP authentication with peer", 1 },
dcoban	0:1a61c61d0845	251	{ "name", o_string, our_name,
dcoban	0:1a61c61d0845	252	"Set local name for authentication",
dcoban	0:1a61c61d0845	253	OPT_PRIV\|OPT_STATIC, NULL, MAXNAMELEN },
dcoban	0:1a61c61d0845	254	{ "user", o_string, user,
dcoban	0:1a61c61d0845	255	"Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
dcoban	0:1a61c61d0845	256	{ "usehostname", o_bool, &usehostname,
dcoban	0:1a61c61d0845	257	"Must use hostname for authentication", 1 },
dcoban	0:1a61c61d0845	258	{ "remotename", o_string, remote_name,
dcoban	0:1a61c61d0845	259	"Set remote name for authentication", OPT_STATIC,
dcoban	0:1a61c61d0845	260	&explicit_remote, MAXNAMELEN },
dcoban	0:1a61c61d0845	261	{ "auth", o_bool, &auth_required,
dcoban	0:1a61c61d0845	262	"Require authentication from peer", 1 },
dcoban	0:1a61c61d0845	263	{ "noauth", o_bool, &auth_required,
dcoban	0:1a61c61d0845	264	"Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
dcoban	0:1a61c61d0845	265	{ "login", o_bool, &uselogin,
dcoban	0:1a61c61d0845	266	"Use system password database for PAP", 1 },
dcoban	0:1a61c61d0845	267	{ "papcrypt", o_bool, &cryptpap,
dcoban	0:1a61c61d0845	268	"PAP passwords are encrypted", 1 },
dcoban	0:1a61c61d0845	269	{ "+ua", o_special, (void *)setupapfile,
dcoban	0:1a61c61d0845	270	"Get PAP user and password from file" },
dcoban	0:1a61c61d0845	271	{ "password", o_string, passwd,
dcoban	0:1a61c61d0845	272	"Password for authenticating us to the peer", OPT_STATIC,
dcoban	0:1a61c61d0845	273	NULL, MAXSECRETLEN },
dcoban	0:1a61c61d0845	274	{ "privgroup", o_special, (void *)privgroup,
dcoban	0:1a61c61d0845	275	"Allow group members to use privileged options", OPT_PRIV },
dcoban	0:1a61c61d0845	276	{ "allow-ip", o_special, (void *)set_noauth_addr,
dcoban	0:1a61c61d0845	277	"Set IP address(es) which can be used without authentication",
dcoban	0:1a61c61d0845	278	OPT_PRIV },
dcoban	0:1a61c61d0845	279	{ NULL }
dcoban	0:1a61c61d0845	280	};
dcoban	0:1a61c61d0845	281	#endif /* UNUSED */
dcoban	0:1a61c61d0845	282	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	283	/*
dcoban	0:1a61c61d0845	284	* setupapfile - specifies UPAP info for authenticating with peer.
dcoban	0:1a61c61d0845	285	*/
dcoban	0:1a61c61d0845	286	static int
dcoban	0:1a61c61d0845	287	setupapfile(char **argv)
dcoban	0:1a61c61d0845	288	{
dcoban	0:1a61c61d0845	289	FILE * ufile;
dcoban	0:1a61c61d0845	290	int l;
dcoban	0:1a61c61d0845	291
dcoban	0:1a61c61d0845	292	lcp_allowoptions[0].neg_upap = 1;
dcoban	0:1a61c61d0845	293
dcoban	0:1a61c61d0845	294	/* open user info file */
dcoban	0:1a61c61d0845	295	seteuid(getuid());
dcoban	0:1a61c61d0845	296	ufile = fopen(*argv, "r");
dcoban	0:1a61c61d0845	297	seteuid(0);
dcoban	0:1a61c61d0845	298	if (ufile == NULL) {
dcoban	0:1a61c61d0845	299	option_error("unable to open user login data file %s", *argv);
dcoban	0:1a61c61d0845	300	return 0;
dcoban	0:1a61c61d0845	301	}
dcoban	0:1a61c61d0845	302	check_access(ufile, *argv);
dcoban	0:1a61c61d0845	303
dcoban	0:1a61c61d0845	304	/* get username */
dcoban	0:1a61c61d0845	305	if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
dcoban	0:1a61c61d0845	306	\|\| fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
dcoban	0:1a61c61d0845	307	option_error("unable to read user login data file %s", *argv);
dcoban	0:1a61c61d0845	308	return 0;
dcoban	0:1a61c61d0845	309	}
dcoban	0:1a61c61d0845	310	fclose(ufile);
dcoban	0:1a61c61d0845	311
dcoban	0:1a61c61d0845	312	/* get rid of newlines */
dcoban	0:1a61c61d0845	313	l = strlen(user);
dcoban	0:1a61c61d0845	314	if (l > 0 && user[l-1] == '\n')
dcoban	0:1a61c61d0845	315	user[l-1] = 0;
dcoban	0:1a61c61d0845	316	l = strlen(passwd);
dcoban	0:1a61c61d0845	317	if (l > 0 && passwd[l-1] == '\n')
dcoban	0:1a61c61d0845	318	passwd[l-1] = 0;
dcoban	0:1a61c61d0845	319
dcoban	0:1a61c61d0845	320	return (1);
dcoban	0:1a61c61d0845	321	}
dcoban	0:1a61c61d0845	322	#endif /* UNUSED */
dcoban	0:1a61c61d0845	323
dcoban	0:1a61c61d0845	324	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	325	/*
dcoban	0:1a61c61d0845	326	* privgroup - allow members of the group to have privileged access.
dcoban	0:1a61c61d0845	327	*/
dcoban	0:1a61c61d0845	328	static int
dcoban	0:1a61c61d0845	329	privgroup(char **argv)
dcoban	0:1a61c61d0845	330	{
dcoban	0:1a61c61d0845	331	struct group *g;
dcoban	0:1a61c61d0845	332	int i;
dcoban	0:1a61c61d0845	333
dcoban	0:1a61c61d0845	334	g = getgrnam(*argv);
dcoban	0:1a61c61d0845	335	if (g == 0) {
dcoban	0:1a61c61d0845	336	option_error("group %s is unknown", *argv);
dcoban	0:1a61c61d0845	337	return 0;
dcoban	0:1a61c61d0845	338	}
dcoban	0:1a61c61d0845	339	for (i = 0; i < ngroups; ++i) {
dcoban	0:1a61c61d0845	340	if (groups[i] == g->gr_gid) {
dcoban	0:1a61c61d0845	341	privileged = 1;
dcoban	0:1a61c61d0845	342	break;
dcoban	0:1a61c61d0845	343	}
dcoban	0:1a61c61d0845	344	}
dcoban	0:1a61c61d0845	345	return 1;
dcoban	0:1a61c61d0845	346	}
dcoban	0:1a61c61d0845	347	#endif
dcoban	0:1a61c61d0845	348
dcoban	0:1a61c61d0845	349	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	350	/*
dcoban	0:1a61c61d0845	351	* set_noauth_addr - set address(es) that can be used without authentication.
dcoban	0:1a61c61d0845	352	* Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
dcoban	0:1a61c61d0845	353	*/
dcoban	0:1a61c61d0845	354	static int
dcoban	0:1a61c61d0845	355	set_noauth_addr(char **argv)
dcoban	0:1a61c61d0845	356	{
dcoban	0:1a61c61d0845	357	char addr = argv;
dcoban	0:1a61c61d0845	358	int l = strlen(addr);
dcoban	0:1a61c61d0845	359	struct wordlist *wp;
dcoban	0:1a61c61d0845	360
dcoban	0:1a61c61d0845	361	wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
dcoban	0:1a61c61d0845	362	if (wp == NULL)
dcoban	0:1a61c61d0845	363	novm("allow-ip argument");
dcoban	0:1a61c61d0845	364	wp->word = (char *) (wp + 1);
dcoban	0:1a61c61d0845	365	wp->next = noauth_addrs;
dcoban	0:1a61c61d0845	366	BCOPY(addr, wp->word, l);
dcoban	0:1a61c61d0845	367	noauth_addrs = wp;
dcoban	0:1a61c61d0845	368	return 1;
dcoban	0:1a61c61d0845	369	}
dcoban	0:1a61c61d0845	370	#endif /* UNUSED */
dcoban	0:1a61c61d0845	371
dcoban	0:1a61c61d0845	372	/*
dcoban	0:1a61c61d0845	373	* An Open on LCP has requested a change from Dead to Establish phase.
dcoban	0:1a61c61d0845	374	* Do what's necessary to bring the physical layer up.
dcoban	0:1a61c61d0845	375	*/
dcoban	0:1a61c61d0845	376	void
dcoban	0:1a61c61d0845	377	link_required(int unit)
dcoban	0:1a61c61d0845	378	{
dcoban	0:1a61c61d0845	379	LWIP_UNUSED_ARG(unit);
dcoban	0:1a61c61d0845	380
dcoban	0:1a61c61d0845	381	AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
dcoban	0:1a61c61d0845	382	}
dcoban	0:1a61c61d0845	383
dcoban	0:1a61c61d0845	384	/*
dcoban	0:1a61c61d0845	385	* LCP has terminated the link; go to the Dead phase and take the
dcoban	0:1a61c61d0845	386	* physical layer down.
dcoban	0:1a61c61d0845	387	*/
dcoban	0:1a61c61d0845	388	void
dcoban	0:1a61c61d0845	389	link_terminated(int unit)
dcoban	0:1a61c61d0845	390	{
dcoban	0:1a61c61d0845	391	AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
dcoban	0:1a61c61d0845	392	if (lcp_phase[unit] == PHASE_DEAD) {
dcoban	0:1a61c61d0845	393	return;
dcoban	0:1a61c61d0845	394	}
dcoban	0:1a61c61d0845	395	if (logged_in) {
dcoban	0:1a61c61d0845	396	plogout();
dcoban	0:1a61c61d0845	397	}
dcoban	0:1a61c61d0845	398	lcp_phase[unit] = PHASE_DEAD;
dcoban	0:1a61c61d0845	399	AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
dcoban	0:1a61c61d0845	400	pppLinkTerminated(unit);
dcoban	0:1a61c61d0845	401	}
dcoban	0:1a61c61d0845	402
dcoban	0:1a61c61d0845	403	/*
dcoban	0:1a61c61d0845	404	* LCP has gone down; it will either die or try to re-establish.
dcoban	0:1a61c61d0845	405	*/
dcoban	0:1a61c61d0845	406	void
dcoban	0:1a61c61d0845	407	link_down(int unit)
dcoban	0:1a61c61d0845	408	{
dcoban	0:1a61c61d0845	409	int i;
dcoban	0:1a61c61d0845	410	struct protent *protp;
dcoban	0:1a61c61d0845	411
dcoban	0:1a61c61d0845	412	AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
dcoban	0:1a61c61d0845	413
dcoban	0:1a61c61d0845	414	if (did_authup) {
dcoban	0:1a61c61d0845	415	/* XXX Do link down processing. */
dcoban	0:1a61c61d0845	416	did_authup = 0;
dcoban	0:1a61c61d0845	417	}
dcoban	0:1a61c61d0845	418	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
dcoban	0:1a61c61d0845	419	if (!protp->enabled_flag) {
dcoban	0:1a61c61d0845	420	continue;
dcoban	0:1a61c61d0845	421	}
dcoban	0:1a61c61d0845	422	if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
dcoban	0:1a61c61d0845	423	(*protp->lowerdown)(unit);
dcoban	0:1a61c61d0845	424	}
dcoban	0:1a61c61d0845	425	if (protp->protocol < 0xC000 && protp->close != NULL) {
dcoban	0:1a61c61d0845	426	(*protp->close)(unit, "LCP down");
dcoban	0:1a61c61d0845	427	}
dcoban	0:1a61c61d0845	428	}
dcoban	0:1a61c61d0845	429	num_np_open = 0; /* number of network protocols we have opened */
dcoban	0:1a61c61d0845	430	num_np_up = 0; /* Number of network protocols which have come up */
dcoban	0:1a61c61d0845	431
dcoban	0:1a61c61d0845	432	if (lcp_phase[unit] != PHASE_DEAD) {
dcoban	0:1a61c61d0845	433	lcp_phase[unit] = PHASE_TERMINATE;
dcoban	0:1a61c61d0845	434	}
dcoban	0:1a61c61d0845	435	pppLinkDown(unit);
dcoban	0:1a61c61d0845	436	}
dcoban	0:1a61c61d0845	437
dcoban	0:1a61c61d0845	438	/*
dcoban	0:1a61c61d0845	439	* The link is established.
dcoban	0:1a61c61d0845	440	* Proceed to the Dead, Authenticate or Network phase as appropriate.
dcoban	0:1a61c61d0845	441	*/
dcoban	0:1a61c61d0845	442	void
dcoban	0:1a61c61d0845	443	link_established(int unit)
dcoban	0:1a61c61d0845	444	{
dcoban	0:1a61c61d0845	445	int auth;
dcoban	0:1a61c61d0845	446	int i;
dcoban	0:1a61c61d0845	447	struct protent *protp;
dcoban	0:1a61c61d0845	448	lcp_options *wo = &lcp_wantoptions[unit];
dcoban	0:1a61c61d0845	449	lcp_options *go = &lcp_gotoptions[unit];
dcoban	0:1a61c61d0845	450	#if PAP_SUPPORT \|\| CHAP_SUPPORT
dcoban	0:1a61c61d0845	451	lcp_options *ho = &lcp_hisoptions[unit];
dcoban	0:1a61c61d0845	452	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	453
dcoban	0:1a61c61d0845	454	AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
dcoban	0:1a61c61d0845	455	/*
dcoban	0:1a61c61d0845	456	* Tell higher-level protocols that LCP is up.
dcoban	0:1a61c61d0845	457	*/
dcoban	0:1a61c61d0845	458	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
dcoban	0:1a61c61d0845	459	if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
dcoban	0:1a61c61d0845	460	(*protp->lowerup)(unit);
dcoban	0:1a61c61d0845	461	}
dcoban	0:1a61c61d0845	462	}
dcoban	0:1a61c61d0845	463	if (ppp_settings.auth_required && !(go->neg_chap \|\| go->neg_upap)) {
dcoban	0:1a61c61d0845	464	/*
dcoban	0:1a61c61d0845	465	* We wanted the peer to authenticate itself, and it refused:
dcoban	0:1a61c61d0845	466	* treat it as though it authenticated with PAP using a username
dcoban	0:1a61c61d0845	467	* of "" and a password of "". If that's not OK, boot it out.
dcoban	0:1a61c61d0845	468	*/
dcoban	0:1a61c61d0845	469	if (!wo->neg_upap \|\| !null_login(unit)) {
dcoban	0:1a61c61d0845	470	AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
dcoban	0:1a61c61d0845	471	lcp_close(unit, "peer refused to authenticate");
dcoban	0:1a61c61d0845	472	return;
dcoban	0:1a61c61d0845	473	}
dcoban	0:1a61c61d0845	474	}
dcoban	0:1a61c61d0845	475
dcoban	0:1a61c61d0845	476	lcp_phase[unit] = PHASE_AUTHENTICATE;
dcoban	0:1a61c61d0845	477	auth = 0;
dcoban	0:1a61c61d0845	478	#if CHAP_SUPPORT
dcoban	0:1a61c61d0845	479	if (go->neg_chap) {
dcoban	0:1a61c61d0845	480	ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
dcoban	0:1a61c61d0845	481	auth \|= CHAP_PEER;
dcoban	0:1a61c61d0845	482	}
dcoban	0:1a61c61d0845	483	#endif /* CHAP_SUPPORT */
dcoban	0:1a61c61d0845	484	#if PAP_SUPPORT && CHAP_SUPPORT
dcoban	0:1a61c61d0845	485	else
dcoban	0:1a61c61d0845	486	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
dcoban	0:1a61c61d0845	487	#if PAP_SUPPORT
dcoban	0:1a61c61d0845	488	if (go->neg_upap) {
dcoban	0:1a61c61d0845	489	upap_authpeer(unit);
dcoban	0:1a61c61d0845	490	auth \|= PAP_PEER;
dcoban	0:1a61c61d0845	491	}
dcoban	0:1a61c61d0845	492	#endif /* PAP_SUPPORT */
dcoban	0:1a61c61d0845	493	#if CHAP_SUPPORT
dcoban	0:1a61c61d0845	494	if (ho->neg_chap) {
dcoban	0:1a61c61d0845	495	ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
dcoban	0:1a61c61d0845	496	auth \|= CHAP_WITHPEER;
dcoban	0:1a61c61d0845	497	}
dcoban	0:1a61c61d0845	498	#endif /* CHAP_SUPPORT */
dcoban	0:1a61c61d0845	499	#if PAP_SUPPORT && CHAP_SUPPORT
dcoban	0:1a61c61d0845	500	else
dcoban	0:1a61c61d0845	501	#endif /* PAP_SUPPORT && CHAP_SUPPORT */
dcoban	0:1a61c61d0845	502	#if PAP_SUPPORT
dcoban	0:1a61c61d0845	503	if (ho->neg_upap) {
dcoban	0:1a61c61d0845	504	if (ppp_settings.passwd[0] == 0) {
dcoban	0:1a61c61d0845	505	passwd_from_file = 1;
dcoban	0:1a61c61d0845	506	if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
dcoban	0:1a61c61d0845	507	AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
dcoban	0:1a61c61d0845	508	}
dcoban	0:1a61c61d0845	509	}
dcoban	0:1a61c61d0845	510	upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
dcoban	0:1a61c61d0845	511	auth \|= PAP_WITHPEER;
dcoban	0:1a61c61d0845	512	}
dcoban	0:1a61c61d0845	513	#endif /* PAP_SUPPORT */
dcoban	0:1a61c61d0845	514	auth_pending[unit] = auth;
dcoban	0:1a61c61d0845	515
dcoban	0:1a61c61d0845	516	if (!auth) {
dcoban	0:1a61c61d0845	517	network_phase(unit);
dcoban	0:1a61c61d0845	518	}
dcoban	0:1a61c61d0845	519	}
dcoban	0:1a61c61d0845	520
dcoban	0:1a61c61d0845	521	/*
dcoban	0:1a61c61d0845	522	* Proceed to the network phase.
dcoban	0:1a61c61d0845	523	*/
dcoban	0:1a61c61d0845	524	static void
dcoban	0:1a61c61d0845	525	network_phase(int unit)
dcoban	0:1a61c61d0845	526	{
dcoban	0:1a61c61d0845	527	int i;
dcoban	0:1a61c61d0845	528	struct protent *protp;
dcoban	0:1a61c61d0845	529	lcp_options *go = &lcp_gotoptions[unit];
dcoban	0:1a61c61d0845	530
dcoban	0:1a61c61d0845	531	/*
dcoban	0:1a61c61d0845	532	* If the peer had to authenticate, run the auth-up script now.
dcoban	0:1a61c61d0845	533	*/
dcoban	0:1a61c61d0845	534	if ((go->neg_chap \|\| go->neg_upap) && !did_authup) {
dcoban	0:1a61c61d0845	535	/* XXX Do setup for peer authentication. */
dcoban	0:1a61c61d0845	536	did_authup = 1;
dcoban	0:1a61c61d0845	537	}
dcoban	0:1a61c61d0845	538
dcoban	0:1a61c61d0845	539	#if CBCP_SUPPORT
dcoban	0:1a61c61d0845	540	/*
dcoban	0:1a61c61d0845	541	* If we negotiated callback, do it now.
dcoban	0:1a61c61d0845	542	*/
dcoban	0:1a61c61d0845	543	if (go->neg_cbcp) {
dcoban	0:1a61c61d0845	544	lcp_phase[unit] = PHASE_CALLBACK;
dcoban	0:1a61c61d0845	545	(*cbcp_protent.open)(unit);
dcoban	0:1a61c61d0845	546	return;
dcoban	0:1a61c61d0845	547	}
dcoban	0:1a61c61d0845	548	#endif /* CBCP_SUPPORT */
dcoban	0:1a61c61d0845	549
dcoban	0:1a61c61d0845	550	lcp_phase[unit] = PHASE_NETWORK;
dcoban	0:1a61c61d0845	551	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
dcoban	0:1a61c61d0845	552	if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
dcoban	0:1a61c61d0845	553	(*protp->open)(unit);
dcoban	0:1a61c61d0845	554	if (protp->protocol != PPP_CCP) {
dcoban	0:1a61c61d0845	555	++num_np_open;
dcoban	0:1a61c61d0845	556	}
dcoban	0:1a61c61d0845	557	}
dcoban	0:1a61c61d0845	558	}
dcoban	0:1a61c61d0845	559
dcoban	0:1a61c61d0845	560	if (num_np_open == 0) {
dcoban	0:1a61c61d0845	561	/* nothing to do */
dcoban	0:1a61c61d0845	562	lcp_close(0, "No network protocols running");
dcoban	0:1a61c61d0845	563	}
dcoban	0:1a61c61d0845	564	}
dcoban	0:1a61c61d0845	565	/* @todo: add void start_networks(void) here (pppd 2.3.11) */
dcoban	0:1a61c61d0845	566
dcoban	0:1a61c61d0845	567	/*
dcoban	0:1a61c61d0845	568	* The peer has failed to authenticate himself using `protocol'.
dcoban	0:1a61c61d0845	569	*/
dcoban	0:1a61c61d0845	570	void
dcoban	0:1a61c61d0845	571	auth_peer_fail(int unit, u16_t protocol)
dcoban	0:1a61c61d0845	572	{
dcoban	0:1a61c61d0845	573	LWIP_UNUSED_ARG(protocol);
dcoban	0:1a61c61d0845	574
dcoban	0:1a61c61d0845	575	AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
dcoban	0:1a61c61d0845	576	/*
dcoban	0:1a61c61d0845	577	* Authentication failure: take the link down
dcoban	0:1a61c61d0845	578	*/
dcoban	0:1a61c61d0845	579	lcp_close(unit, "Authentication failed");
dcoban	0:1a61c61d0845	580	}
dcoban	0:1a61c61d0845	581
dcoban	0:1a61c61d0845	582
dcoban	0:1a61c61d0845	583	#if PAP_SUPPORT \|\| CHAP_SUPPORT
dcoban	0:1a61c61d0845	584	/*
dcoban	0:1a61c61d0845	585	* The peer has been successfully authenticated using `protocol'.
dcoban	0:1a61c61d0845	586	*/
dcoban	0:1a61c61d0845	587	void
dcoban	0:1a61c61d0845	588	auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
dcoban	0:1a61c61d0845	589	{
dcoban	0:1a61c61d0845	590	int pbit;
dcoban	0:1a61c61d0845	591
dcoban	0:1a61c61d0845	592	AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
dcoban	0:1a61c61d0845	593	switch (protocol) {
dcoban	0:1a61c61d0845	594	case PPP_CHAP:
dcoban	0:1a61c61d0845	595	pbit = CHAP_PEER;
dcoban	0:1a61c61d0845	596	break;
dcoban	0:1a61c61d0845	597	case PPP_PAP:
dcoban	0:1a61c61d0845	598	pbit = PAP_PEER;
dcoban	0:1a61c61d0845	599	break;
dcoban	0:1a61c61d0845	600	default:
dcoban	0:1a61c61d0845	601	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
dcoban	0:1a61c61d0845	602	return;
dcoban	0:1a61c61d0845	603	}
dcoban	0:1a61c61d0845	604
dcoban	0:1a61c61d0845	605	/*
dcoban	0:1a61c61d0845	606	* Save the authenticated name of the peer for later.
dcoban	0:1a61c61d0845	607	*/
dcoban	0:1a61c61d0845	608	if (namelen > (int)sizeof(peer_authname) - 1) {
dcoban	0:1a61c61d0845	609	namelen = sizeof(peer_authname) - 1;
dcoban	0:1a61c61d0845	610	}
dcoban	0:1a61c61d0845	611	BCOPY(name, peer_authname, namelen);
dcoban	0:1a61c61d0845	612	peer_authname[namelen] = 0;
dcoban	0:1a61c61d0845	613
dcoban	0:1a61c61d0845	614	/*
dcoban	0:1a61c61d0845	615	* If there is no more authentication still to be done,
dcoban	0:1a61c61d0845	616	* proceed to the network (or callback) phase.
dcoban	0:1a61c61d0845	617	*/
dcoban	0:1a61c61d0845	618	if ((auth_pending[unit] &= ~pbit) == 0) {
dcoban	0:1a61c61d0845	619	network_phase(unit);
dcoban	0:1a61c61d0845	620	}
dcoban	0:1a61c61d0845	621	}
dcoban	0:1a61c61d0845	622
dcoban	0:1a61c61d0845	623	/*
dcoban	0:1a61c61d0845	624	* We have failed to authenticate ourselves to the peer using `protocol'.
dcoban	0:1a61c61d0845	625	*/
dcoban	0:1a61c61d0845	626	void
dcoban	0:1a61c61d0845	627	auth_withpeer_fail(int unit, u16_t protocol)
dcoban	0:1a61c61d0845	628	{
dcoban	0:1a61c61d0845	629	int errCode = PPPERR_AUTHFAIL;
dcoban	0:1a61c61d0845	630
dcoban	0:1a61c61d0845	631	LWIP_UNUSED_ARG(protocol);
dcoban	0:1a61c61d0845	632
dcoban	0:1a61c61d0845	633	AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
dcoban	0:1a61c61d0845	634	if (passwd_from_file) {
dcoban	0:1a61c61d0845	635	BZERO(ppp_settings.passwd, MAXSECRETLEN);
dcoban	0:1a61c61d0845	636	}
dcoban	0:1a61c61d0845	637
dcoban	0:1a61c61d0845	638	/*
dcoban	0:1a61c61d0845	639	* We've failed to authenticate ourselves to our peer.
dcoban	0:1a61c61d0845	640	* He'll probably take the link down, and there's not much
dcoban	0:1a61c61d0845	641	* we can do except wait for that.
dcoban	0:1a61c61d0845	642	*/
dcoban	0:1a61c61d0845	643	pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
dcoban	0:1a61c61d0845	644	lcp_close(unit, "Failed to authenticate ourselves to peer");
dcoban	0:1a61c61d0845	645	}
dcoban	0:1a61c61d0845	646
dcoban	0:1a61c61d0845	647	/*
dcoban	0:1a61c61d0845	648	* We have successfully authenticated ourselves with the peer using `protocol'.
dcoban	0:1a61c61d0845	649	*/
dcoban	0:1a61c61d0845	650	void
dcoban	0:1a61c61d0845	651	auth_withpeer_success(int unit, u16_t protocol)
dcoban	0:1a61c61d0845	652	{
dcoban	0:1a61c61d0845	653	int pbit;
dcoban	0:1a61c61d0845	654
dcoban	0:1a61c61d0845	655	AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
dcoban	0:1a61c61d0845	656	switch (protocol) {
dcoban	0:1a61c61d0845	657	case PPP_CHAP:
dcoban	0:1a61c61d0845	658	pbit = CHAP_WITHPEER;
dcoban	0:1a61c61d0845	659	break;
dcoban	0:1a61c61d0845	660	case PPP_PAP:
dcoban	0:1a61c61d0845	661	if (passwd_from_file) {
dcoban	0:1a61c61d0845	662	BZERO(ppp_settings.passwd, MAXSECRETLEN);
dcoban	0:1a61c61d0845	663	}
dcoban	0:1a61c61d0845	664	pbit = PAP_WITHPEER;
dcoban	0:1a61c61d0845	665	break;
dcoban	0:1a61c61d0845	666	default:
dcoban	0:1a61c61d0845	667	AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
dcoban	0:1a61c61d0845	668	pbit = 0;
dcoban	0:1a61c61d0845	669	}
dcoban	0:1a61c61d0845	670
dcoban	0:1a61c61d0845	671	/*
dcoban	0:1a61c61d0845	672	* If there is no more authentication still being done,
dcoban	0:1a61c61d0845	673	* proceed to the network (or callback) phase.
dcoban	0:1a61c61d0845	674	*/
dcoban	0:1a61c61d0845	675	if ((auth_pending[unit] &= ~pbit) == 0) {
dcoban	0:1a61c61d0845	676	network_phase(unit);
dcoban	0:1a61c61d0845	677	}
dcoban	0:1a61c61d0845	678	}
dcoban	0:1a61c61d0845	679	#endif /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	680
dcoban	0:1a61c61d0845	681
dcoban	0:1a61c61d0845	682	/*
dcoban	0:1a61c61d0845	683	* np_up - a network protocol has come up.
dcoban	0:1a61c61d0845	684	*/
dcoban	0:1a61c61d0845	685	void
dcoban	0:1a61c61d0845	686	np_up(int unit, u16_t proto)
dcoban	0:1a61c61d0845	687	{
dcoban	0:1a61c61d0845	688	LWIP_UNUSED_ARG(unit);
dcoban	0:1a61c61d0845	689	LWIP_UNUSED_ARG(proto);
dcoban	0:1a61c61d0845	690
dcoban	0:1a61c61d0845	691	AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
dcoban	0:1a61c61d0845	692	if (num_np_up == 0) {
dcoban	0:1a61c61d0845	693	AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
dcoban	0:1a61c61d0845	694	/*
dcoban	0:1a61c61d0845	695	* At this point we consider that the link has come up successfully.
dcoban	0:1a61c61d0845	696	*/
dcoban	0:1a61c61d0845	697	if (ppp_settings.idle_time_limit > 0) {
dcoban	0:1a61c61d0845	698	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
dcoban	0:1a61c61d0845	699	}
dcoban	0:1a61c61d0845	700
dcoban	0:1a61c61d0845	701	/*
dcoban	0:1a61c61d0845	702	* Set a timeout to close the connection once the maximum
dcoban	0:1a61c61d0845	703	* connect time has expired.
dcoban	0:1a61c61d0845	704	*/
dcoban	0:1a61c61d0845	705	if (ppp_settings.maxconnect > 0) {
dcoban	0:1a61c61d0845	706	TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
dcoban	0:1a61c61d0845	707	}
dcoban	0:1a61c61d0845	708	}
dcoban	0:1a61c61d0845	709	++num_np_up;
dcoban	0:1a61c61d0845	710	}
dcoban	0:1a61c61d0845	711
dcoban	0:1a61c61d0845	712	/*
dcoban	0:1a61c61d0845	713	* np_down - a network protocol has gone down.
dcoban	0:1a61c61d0845	714	*/
dcoban	0:1a61c61d0845	715	void
dcoban	0:1a61c61d0845	716	np_down(int unit, u16_t proto)
dcoban	0:1a61c61d0845	717	{
dcoban	0:1a61c61d0845	718	LWIP_UNUSED_ARG(unit);
dcoban	0:1a61c61d0845	719	LWIP_UNUSED_ARG(proto);
dcoban	0:1a61c61d0845	720
dcoban	0:1a61c61d0845	721	AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
dcoban	0:1a61c61d0845	722	if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
dcoban	0:1a61c61d0845	723	UNTIMEOUT(check_idle, NULL);
dcoban	0:1a61c61d0845	724	}
dcoban	0:1a61c61d0845	725	}
dcoban	0:1a61c61d0845	726
dcoban	0:1a61c61d0845	727	/*
dcoban	0:1a61c61d0845	728	* np_finished - a network protocol has finished using the link.
dcoban	0:1a61c61d0845	729	*/
dcoban	0:1a61c61d0845	730	void
dcoban	0:1a61c61d0845	731	np_finished(int unit, u16_t proto)
dcoban	0:1a61c61d0845	732	{
dcoban	0:1a61c61d0845	733	LWIP_UNUSED_ARG(unit);
dcoban	0:1a61c61d0845	734	LWIP_UNUSED_ARG(proto);
dcoban	0:1a61c61d0845	735
dcoban	0:1a61c61d0845	736	AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
dcoban	0:1a61c61d0845	737	if (--num_np_open <= 0) {
dcoban	0:1a61c61d0845	738	/* no further use for the link: shut up shop. */
dcoban	0:1a61c61d0845	739	lcp_close(0, "No network protocols running");
dcoban	0:1a61c61d0845	740	}
dcoban	0:1a61c61d0845	741	}
dcoban	0:1a61c61d0845	742
dcoban	0:1a61c61d0845	743	/*
dcoban	0:1a61c61d0845	744	* check_idle - check whether the link has been idle for long
dcoban	0:1a61c61d0845	745	* enough that we can shut it down.
dcoban	0:1a61c61d0845	746	*/
dcoban	0:1a61c61d0845	747	static void
dcoban	0:1a61c61d0845	748	check_idle(void *arg)
dcoban	0:1a61c61d0845	749	{
dcoban	0:1a61c61d0845	750	struct ppp_idle idle;
dcoban	0:1a61c61d0845	751	u_short itime;
dcoban	0:1a61c61d0845	752
dcoban	0:1a61c61d0845	753	LWIP_UNUSED_ARG(arg);
dcoban	0:1a61c61d0845	754	if (!get_idle_time(0, &idle)) {
dcoban	0:1a61c61d0845	755	return;
dcoban	0:1a61c61d0845	756	}
dcoban	0:1a61c61d0845	757	itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
dcoban	0:1a61c61d0845	758	if (itime >= ppp_settings.idle_time_limit) {
dcoban	0:1a61c61d0845	759	/* link is idle: shut it down. */
dcoban	0:1a61c61d0845	760	AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
dcoban	0:1a61c61d0845	761	lcp_close(0, "Link inactive");
dcoban	0:1a61c61d0845	762	} else {
dcoban	0:1a61c61d0845	763	TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
dcoban	0:1a61c61d0845	764	}
dcoban	0:1a61c61d0845	765	}
dcoban	0:1a61c61d0845	766
dcoban	0:1a61c61d0845	767	/*
dcoban	0:1a61c61d0845	768	* connect_time_expired - log a message and close the connection.
dcoban	0:1a61c61d0845	769	*/
dcoban	0:1a61c61d0845	770	static void
dcoban	0:1a61c61d0845	771	connect_time_expired(void *arg)
dcoban	0:1a61c61d0845	772	{
dcoban	0:1a61c61d0845	773	LWIP_UNUSED_ARG(arg);
dcoban	0:1a61c61d0845	774
dcoban	0:1a61c61d0845	775	AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
dcoban	0:1a61c61d0845	776	lcp_close(0, "Connect time expired"); /* Close connection */
dcoban	0:1a61c61d0845	777	}
dcoban	0:1a61c61d0845	778
dcoban	0:1a61c61d0845	779	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	780	/*
dcoban	0:1a61c61d0845	781	* auth_check_options - called to check authentication options.
dcoban	0:1a61c61d0845	782	*/
dcoban	0:1a61c61d0845	783	void
dcoban	0:1a61c61d0845	784	auth_check_options(void)
dcoban	0:1a61c61d0845	785	{
dcoban	0:1a61c61d0845	786	lcp_options *wo = &lcp_wantoptions[0];
dcoban	0:1a61c61d0845	787	int can_auth;
dcoban	0:1a61c61d0845	788	ipcp_options *ipwo = &ipcp_wantoptions[0];
dcoban	0:1a61c61d0845	789	u32_t remote;
dcoban	0:1a61c61d0845	790
dcoban	0:1a61c61d0845	791	/* Default our_name to hostname, and user to our_name */
dcoban	0:1a61c61d0845	792	if (ppp_settings.our_name[0] == 0 \|\| ppp_settings.usehostname) {
dcoban	0:1a61c61d0845	793	strcpy(ppp_settings.our_name, ppp_settings.hostname);
dcoban	0:1a61c61d0845	794	}
dcoban	0:1a61c61d0845	795
dcoban	0:1a61c61d0845	796	if (ppp_settings.user[0] == 0) {
dcoban	0:1a61c61d0845	797	strcpy(ppp_settings.user, ppp_settings.our_name);
dcoban	0:1a61c61d0845	798	}
dcoban	0:1a61c61d0845	799
dcoban	0:1a61c61d0845	800	/* If authentication is required, ask peer for CHAP or PAP. */
dcoban	0:1a61c61d0845	801	if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
dcoban	0:1a61c61d0845	802	wo->neg_chap = 1;
dcoban	0:1a61c61d0845	803	wo->neg_upap = 1;
dcoban	0:1a61c61d0845	804	}
dcoban	0:1a61c61d0845	805
dcoban	0:1a61c61d0845	806	/*
dcoban	0:1a61c61d0845	807	* Check whether we have appropriate secrets to use
dcoban	0:1a61c61d0845	808	* to authenticate the peer.
dcoban	0:1a61c61d0845	809	*/
dcoban	0:1a61c61d0845	810	can_auth = wo->neg_upap && have_pap_secret();
dcoban	0:1a61c61d0845	811	if (!can_auth && wo->neg_chap) {
dcoban	0:1a61c61d0845	812	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
dcoban	0:1a61c61d0845	813	can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
dcoban	0:1a61c61d0845	814	}
dcoban	0:1a61c61d0845	815
dcoban	0:1a61c61d0845	816	if (ppp_settings.auth_required && !can_auth) {
dcoban	0:1a61c61d0845	817	ppp_panic("No auth secret");
dcoban	0:1a61c61d0845	818	}
dcoban	0:1a61c61d0845	819	}
dcoban	0:1a61c61d0845	820	#endif /* UNUSED */
dcoban	0:1a61c61d0845	821
dcoban	0:1a61c61d0845	822	/*
dcoban	0:1a61c61d0845	823	* auth_reset - called when LCP is starting negotiations to recheck
dcoban	0:1a61c61d0845	824	* authentication options, i.e. whether we have appropriate secrets
dcoban	0:1a61c61d0845	825	* to use for authenticating ourselves and/or the peer.
dcoban	0:1a61c61d0845	826	*/
dcoban	0:1a61c61d0845	827	void
dcoban	0:1a61c61d0845	828	auth_reset(int unit)
dcoban	0:1a61c61d0845	829	{
dcoban	0:1a61c61d0845	830	lcp_options *go = &lcp_gotoptions[unit];
dcoban	0:1a61c61d0845	831	lcp_options *ao = &lcp_allowoptions[0];
dcoban	0:1a61c61d0845	832	ipcp_options *ipwo = &ipcp_wantoptions[0];
dcoban	0:1a61c61d0845	833	u32_t remote;
dcoban	0:1a61c61d0845	834
dcoban	0:1a61c61d0845	835	AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
dcoban	0:1a61c61d0845	836	ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 \|\| get_pap_passwd(unit, NULL, NULL));
dcoban	0:1a61c61d0845	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)/;
dcoban	0:1a61c61d0845	838
dcoban	0:1a61c61d0845	839	if (go->neg_upap && !have_pap_secret()) {
dcoban	0:1a61c61d0845	840	go->neg_upap = 0;
dcoban	0:1a61c61d0845	841	}
dcoban	0:1a61c61d0845	842	if (go->neg_chap) {
dcoban	0:1a61c61d0845	843	remote = ipwo->accept_remote? 0: ipwo->hisaddr;
dcoban	0:1a61c61d0845	844	if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
dcoban	0:1a61c61d0845	845	go->neg_chap = 0;
dcoban	0:1a61c61d0845	846	}
dcoban	0:1a61c61d0845	847	}
dcoban	0:1a61c61d0845	848	}
dcoban	0:1a61c61d0845	849
dcoban	0:1a61c61d0845	850	#if PAP_SUPPORT
dcoban	0:1a61c61d0845	851	/*
dcoban	0:1a61c61d0845	852	* check_passwd - Check the user name and passwd against the PAP secrets
dcoban	0:1a61c61d0845	853	* file. If requested, also check against the system password database,
dcoban	0:1a61c61d0845	854	* and login the user if OK.
dcoban	0:1a61c61d0845	855	*
dcoban	0:1a61c61d0845	856	* returns:
dcoban	0:1a61c61d0845	857	* UPAP_AUTHNAK: Authentication failed.
dcoban	0:1a61c61d0845	858	* UPAP_AUTHACK: Authentication succeeded.
dcoban	0:1a61c61d0845	859	* In either case, msg points to an appropriate message.
dcoban	0:1a61c61d0845	860	*/
dcoban	0:1a61c61d0845	861	u_char
dcoban	0:1a61c61d0845	862	check_passwd( int unit, char auser, int userlen, char apasswd, int passwdlen, char *msg, int msglen)
dcoban	0:1a61c61d0845	863	{
dcoban	0:1a61c61d0845	864	#if 1 /* XXX Assume all entries OK. */
dcoban	0:1a61c61d0845	865	LWIP_UNUSED_ARG(unit);
dcoban	0:1a61c61d0845	866	LWIP_UNUSED_ARG(auser);
dcoban	0:1a61c61d0845	867	LWIP_UNUSED_ARG(userlen);
dcoban	0:1a61c61d0845	868	LWIP_UNUSED_ARG(apasswd);
dcoban	0:1a61c61d0845	869	LWIP_UNUSED_ARG(passwdlen);
dcoban	0:1a61c61d0845	870	LWIP_UNUSED_ARG(msglen);
dcoban	0:1a61c61d0845	871	msg = (char ) 0;
dcoban	0:1a61c61d0845	872	return UPAP_AUTHACK; /* XXX Assume all entries OK. */
dcoban	0:1a61c61d0845	873	#else
dcoban	0:1a61c61d0845	874	u_char ret = 0;
dcoban	0:1a61c61d0845	875	struct wordlist *addrs = NULL;
dcoban	0:1a61c61d0845	876	char passwd[256], user[256];
dcoban	0:1a61c61d0845	877	char secret[MAXWORDLEN];
dcoban	0:1a61c61d0845	878	static u_short attempts = 0;
dcoban	0:1a61c61d0845	879
dcoban	0:1a61c61d0845	880	/*
dcoban	0:1a61c61d0845	881	* Make copies of apasswd and auser, then null-terminate them.
dcoban	0:1a61c61d0845	882	*/
dcoban	0:1a61c61d0845	883	BCOPY(apasswd, passwd, passwdlen);
dcoban	0:1a61c61d0845	884	passwd[passwdlen] = '\0';
dcoban	0:1a61c61d0845	885	BCOPY(auser, user, userlen);
dcoban	0:1a61c61d0845	886	user[userlen] = '\0';
dcoban	0:1a61c61d0845	887	msg = (char ) 0;
dcoban	0:1a61c61d0845	888
dcoban	0:1a61c61d0845	889	/* XXX Validate user name and password. */
dcoban	0:1a61c61d0845	890	ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
dcoban	0:1a61c61d0845	891
dcoban	0:1a61c61d0845	892	if (ret == UPAP_AUTHNAK) {
dcoban	0:1a61c61d0845	893	if (msg == (char ) 0) {
dcoban	0:1a61c61d0845	894	*msg = "Login incorrect";
dcoban	0:1a61c61d0845	895	}
dcoban	0:1a61c61d0845	896	msglen = strlen(msg);
dcoban	0:1a61c61d0845	897	/*
dcoban	0:1a61c61d0845	898	* Frustrate passwd stealer programs.
dcoban	0:1a61c61d0845	899	* Allow 10 tries, but start backing off after 3 (stolen from login).
dcoban	0:1a61c61d0845	900	* On 10'th, drop the connection.
dcoban	0:1a61c61d0845	901	*/
dcoban	0:1a61c61d0845	902	if (attempts++ >= 10) {
dcoban	0:1a61c61d0845	903	AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
dcoban	0:1a61c61d0845	904	/ppp_panic("Excess Bad Logins");/
dcoban	0:1a61c61d0845	905	}
dcoban	0:1a61c61d0845	906	if (attempts > 3) {
dcoban	0:1a61c61d0845	907	/* @todo: this was sleep(), i.e. seconds, not milliseconds
dcoban	0:1a61c61d0845	908	* I don't think we really need this in lwIP - we would block tcpip_thread!
dcoban	0:1a61c61d0845	909	*/
dcoban	0:1a61c61d0845	910	/sys_msleep((attempts - 3) 5);*/
dcoban	0:1a61c61d0845	911	}
dcoban	0:1a61c61d0845	912	if (addrs != NULL) {
dcoban	0:1a61c61d0845	913	free_wordlist(addrs);
dcoban	0:1a61c61d0845	914	}
dcoban	0:1a61c61d0845	915	} else {
dcoban	0:1a61c61d0845	916	attempts = 0; /* Reset count */
dcoban	0:1a61c61d0845	917	if (msg == (char ) 0) {
dcoban	0:1a61c61d0845	918	*msg = "Login ok";
dcoban	0:1a61c61d0845	919	}
dcoban	0:1a61c61d0845	920	msglen = strlen(msg);
dcoban	0:1a61c61d0845	921	set_allowed_addrs(unit, addrs);
dcoban	0:1a61c61d0845	922	}
dcoban	0:1a61c61d0845	923
dcoban	0:1a61c61d0845	924	BZERO(passwd, sizeof(passwd));
dcoban	0:1a61c61d0845	925	BZERO(secret, sizeof(secret));
dcoban	0:1a61c61d0845	926
dcoban	0:1a61c61d0845	927	return ret;
dcoban	0:1a61c61d0845	928	#endif
dcoban	0:1a61c61d0845	929	}
dcoban	0:1a61c61d0845	930	#endif /* PAP_SUPPORT */
dcoban	0:1a61c61d0845	931
dcoban	0:1a61c61d0845	932	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	933	/*
dcoban	0:1a61c61d0845	934	* This function is needed for PAM.
dcoban	0:1a61c61d0845	935	*/
dcoban	0:1a61c61d0845	936
dcoban	0:1a61c61d0845	937	#ifdef USE_PAM
dcoban	0:1a61c61d0845	938
dcoban	0:1a61c61d0845	939	/* lwip does not support PAM*/
dcoban	0:1a61c61d0845	940
dcoban	0:1a61c61d0845	941	#endif /* USE_PAM */
dcoban	0:1a61c61d0845	942
dcoban	0:1a61c61d0845	943	#endif /* UNUSED */
dcoban	0:1a61c61d0845	944
dcoban	0:1a61c61d0845	945
dcoban	0:1a61c61d0845	946	#if 0 /* UNUSED */
dcoban	0:1a61c61d0845	947	/*
dcoban	0:1a61c61d0845	948	* plogin - Check the user name and password against the system
dcoban	0:1a61c61d0845	949	* password database, and login the user if OK.
dcoban	0:1a61c61d0845	950	*
dcoban	0:1a61c61d0845	951	* returns:
dcoban	0:1a61c61d0845	952	* UPAP_AUTHNAK: Login failed.
dcoban	0:1a61c61d0845	953	* UPAP_AUTHACK: Login succeeded.
dcoban	0:1a61c61d0845	954	* In either case, msg points to an appropriate message.
dcoban	0:1a61c61d0845	955	*/
dcoban	0:1a61c61d0845	956	static int
dcoban	0:1a61c61d0845	957	plogin(char user, char passwd, char *msg, int msglen)
dcoban	0:1a61c61d0845	958	{
dcoban	0:1a61c61d0845	959
dcoban	0:1a61c61d0845	960	LWIP_UNUSED_ARG(user);
dcoban	0:1a61c61d0845	961	LWIP_UNUSED_ARG(passwd);
dcoban	0:1a61c61d0845	962	LWIP_UNUSED_ARG(msg);
dcoban	0:1a61c61d0845	963	LWIP_UNUSED_ARG(msglen);
dcoban	0:1a61c61d0845	964
dcoban	0:1a61c61d0845	965
dcoban	0:1a61c61d0845	966	/* The new lines are here align the file when
dcoban	0:1a61c61d0845	967	* compared against the pppd 2.3.11 code */
dcoban	0:1a61c61d0845	968
dcoban	0:1a61c61d0845	969
dcoban	0:1a61c61d0845	970
dcoban	0:1a61c61d0845	971
dcoban	0:1a61c61d0845	972
dcoban	0:1a61c61d0845	973
dcoban	0:1a61c61d0845	974
dcoban	0:1a61c61d0845	975
dcoban	0:1a61c61d0845	976
dcoban	0:1a61c61d0845	977
dcoban	0:1a61c61d0845	978
dcoban	0:1a61c61d0845	979
dcoban	0:1a61c61d0845	980
dcoban	0:1a61c61d0845	981
dcoban	0:1a61c61d0845	982
dcoban	0:1a61c61d0845	983
dcoban	0:1a61c61d0845	984	/* XXX Fail until we decide that we want to support logins. */
dcoban	0:1a61c61d0845	985	return (UPAP_AUTHNAK);
dcoban	0:1a61c61d0845	986	}
dcoban	0:1a61c61d0845	987	#endif
dcoban	0:1a61c61d0845	988
dcoban	0:1a61c61d0845	989
dcoban	0:1a61c61d0845	990
dcoban	0:1a61c61d0845	991	/*
dcoban	0:1a61c61d0845	992	* plogout - Logout the user.
dcoban	0:1a61c61d0845	993	*/
dcoban	0:1a61c61d0845	994	static void
dcoban	0:1a61c61d0845	995	plogout(void)
dcoban	0:1a61c61d0845	996	{
dcoban	0:1a61c61d0845	997	logged_in = 0;
dcoban	0:1a61c61d0845	998	}
dcoban	0:1a61c61d0845	999
dcoban	0:1a61c61d0845	1000	/*
dcoban	0:1a61c61d0845	1001	* null_login - Check if a username of "" and a password of "" are
dcoban	0:1a61c61d0845	1002	* acceptable, and iff so, set the list of acceptable IP addresses
dcoban	0:1a61c61d0845	1003	* and return 1.
dcoban	0:1a61c61d0845	1004	*/
dcoban	0:1a61c61d0845	1005	static int
dcoban	0:1a61c61d0845	1006	null_login(int unit)
dcoban	0:1a61c61d0845	1007	{
dcoban	0:1a61c61d0845	1008	LWIP_UNUSED_ARG(unit);
dcoban	0:1a61c61d0845	1009	/* XXX Fail until we decide that we want to support logins. */
dcoban	0:1a61c61d0845	1010	return 0;
dcoban	0:1a61c61d0845	1011	}
dcoban	0:1a61c61d0845	1012
dcoban	0:1a61c61d0845	1013
dcoban	0:1a61c61d0845	1014	/*
dcoban	0:1a61c61d0845	1015	* get_pap_passwd - get a password for authenticating ourselves with
dcoban	0:1a61c61d0845	1016	* our peer using PAP. Returns 1 on success, 0 if no suitable password
dcoban	0:1a61c61d0845	1017	* could be found.
dcoban	0:1a61c61d0845	1018	*/
dcoban	0:1a61c61d0845	1019	static int
dcoban	0:1a61c61d0845	1020	get_pap_passwd(int unit, char user, char passwd)
dcoban	0:1a61c61d0845	1021	{
dcoban	0:1a61c61d0845	1022	LWIP_UNUSED_ARG(unit);
dcoban	0:1a61c61d0845	1023	/* normally we would reject PAP if no password is provided,
dcoban	0:1a61c61d0845	1024	but this causes problems with some providers (like CHT in Taiwan)
dcoban	0:1a61c61d0845	1025	who incorrectly request PAP and expect a bogus/empty password, so
dcoban	0:1a61c61d0845	1026	always provide a default user/passwd of "none"/"none"
dcoban	0:1a61c61d0845	1027
dcoban	0:1a61c61d0845	1028	@todo: This should be configured by the user, instead of being hardcoded here!
dcoban	0:1a61c61d0845	1029	*/
dcoban	0:1a61c61d0845	1030	if(user) {
dcoban	0:1a61c61d0845	1031	strcpy(user, "none");
dcoban	0:1a61c61d0845	1032	}
dcoban	0:1a61c61d0845	1033	if(passwd) {
dcoban	0:1a61c61d0845	1034	strcpy(passwd, "none");
dcoban	0:1a61c61d0845	1035	}
dcoban	0:1a61c61d0845	1036	return 1;
dcoban	0:1a61c61d0845	1037	}
dcoban	0:1a61c61d0845	1038
dcoban	0:1a61c61d0845	1039	/*
dcoban	0:1a61c61d0845	1040	* have_pap_secret - check whether we have a PAP file with any
dcoban	0:1a61c61d0845	1041	* secrets that we could possibly use for authenticating the peer.
dcoban	0:1a61c61d0845	1042	*/
dcoban	0:1a61c61d0845	1043	static int
dcoban	0:1a61c61d0845	1044	have_pap_secret(void)
dcoban	0:1a61c61d0845	1045	{
dcoban	0:1a61c61d0845	1046	/* XXX Fail until we set up our passwords. */
dcoban	0:1a61c61d0845	1047	return 0;
dcoban	0:1a61c61d0845	1048	}
dcoban	0:1a61c61d0845	1049
dcoban	0:1a61c61d0845	1050	/*
dcoban	0:1a61c61d0845	1051	* have_chap_secret - check whether we have a CHAP file with a
dcoban	0:1a61c61d0845	1052	* secret that we could possibly use for authenticating `client'
dcoban	0:1a61c61d0845	1053	* on `server'. Either can be the null string, meaning we don't
dcoban	0:1a61c61d0845	1054	* know the identity yet.
dcoban	0:1a61c61d0845	1055	*/
dcoban	0:1a61c61d0845	1056	static int
dcoban	0:1a61c61d0845	1057	have_chap_secret(char client, char server, u32_t remote)
dcoban	0:1a61c61d0845	1058	{
dcoban	0:1a61c61d0845	1059	LWIP_UNUSED_ARG(client);
dcoban	0:1a61c61d0845	1060	LWIP_UNUSED_ARG(server);
dcoban	0:1a61c61d0845	1061	LWIP_UNUSED_ARG(remote);
dcoban	0:1a61c61d0845	1062
dcoban	0:1a61c61d0845	1063	/* XXX Fail until we set up our passwords. */
dcoban	0:1a61c61d0845	1064	return 0;
dcoban	0:1a61c61d0845	1065	}
dcoban	0:1a61c61d0845	1066	#if CHAP_SUPPORT
dcoban	0:1a61c61d0845	1067
dcoban	0:1a61c61d0845	1068	/*
dcoban	0:1a61c61d0845	1069	* get_secret - open the CHAP secret file and return the secret
dcoban	0:1a61c61d0845	1070	* for authenticating the given client on the given server.
dcoban	0:1a61c61d0845	1071	* (We could be either client or server).
dcoban	0:1a61c61d0845	1072	*/
dcoban	0:1a61c61d0845	1073	int
dcoban	0:1a61c61d0845	1074	get_secret(int unit, char client, char server, char secret, int secret_len, int save_addrs)
dcoban	0:1a61c61d0845	1075	{
dcoban	0:1a61c61d0845	1076	#if 1
dcoban	0:1a61c61d0845	1077	int len;
dcoban	0:1a61c61d0845	1078	struct wordlist *addrs;
dcoban	0:1a61c61d0845	1079
dcoban	0:1a61c61d0845	1080	LWIP_UNUSED_ARG(unit);
dcoban	0:1a61c61d0845	1081	LWIP_UNUSED_ARG(server);
dcoban	0:1a61c61d0845	1082	LWIP_UNUSED_ARG(save_addrs);
dcoban	0:1a61c61d0845	1083
dcoban	0:1a61c61d0845	1084	addrs = NULL;
dcoban	0:1a61c61d0845	1085
dcoban	0:1a61c61d0845	1086	if(!client \|\| !client[0] \|\| strcmp(client, ppp_settings.user)) {
dcoban	0:1a61c61d0845	1087	return 0;
dcoban	0:1a61c61d0845	1088	}
dcoban	0:1a61c61d0845	1089
dcoban	0:1a61c61d0845	1090	len = (int)strlen(ppp_settings.passwd);
dcoban	0:1a61c61d0845	1091	if (len > MAXSECRETLEN) {
dcoban	0:1a61c61d0845	1092	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
dcoban	0:1a61c61d0845	1093	len = MAXSECRETLEN;
dcoban	0:1a61c61d0845	1094	}
dcoban	0:1a61c61d0845	1095
dcoban	0:1a61c61d0845	1096	BCOPY(ppp_settings.passwd, secret, len);
dcoban	0:1a61c61d0845	1097	*secret_len = len;
dcoban	0:1a61c61d0845	1098
dcoban	0:1a61c61d0845	1099	return 1;
dcoban	0:1a61c61d0845	1100	#else
dcoban	0:1a61c61d0845	1101	int ret = 0, len;
dcoban	0:1a61c61d0845	1102	struct wordlist *addrs;
dcoban	0:1a61c61d0845	1103	char secbuf[MAXWORDLEN];
dcoban	0:1a61c61d0845	1104
dcoban	0:1a61c61d0845	1105	addrs = NULL;
dcoban	0:1a61c61d0845	1106	secbuf[0] = 0;
dcoban	0:1a61c61d0845	1107
dcoban	0:1a61c61d0845	1108	/* XXX Find secret. */
dcoban	0:1a61c61d0845	1109	if (ret < 0) {
dcoban	0:1a61c61d0845	1110	return 0;
dcoban	0:1a61c61d0845	1111	}
dcoban	0:1a61c61d0845	1112
dcoban	0:1a61c61d0845	1113	if (save_addrs) {
dcoban	0:1a61c61d0845	1114	set_allowed_addrs(unit, addrs);
dcoban	0:1a61c61d0845	1115	}
dcoban	0:1a61c61d0845	1116
dcoban	0:1a61c61d0845	1117	len = strlen(secbuf);
dcoban	0:1a61c61d0845	1118	if (len > MAXSECRETLEN) {
dcoban	0:1a61c61d0845	1119	AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
dcoban	0:1a61c61d0845	1120	len = MAXSECRETLEN;
dcoban	0:1a61c61d0845	1121	}
dcoban	0:1a61c61d0845	1122
dcoban	0:1a61c61d0845	1123	BCOPY(secbuf, secret, len);
dcoban	0:1a61c61d0845	1124	BZERO(secbuf, sizeof(secbuf));
dcoban	0:1a61c61d0845	1125	*secret_len = len;
dcoban	0:1a61c61d0845	1126
dcoban	0:1a61c61d0845	1127	return 1;
dcoban	0:1a61c61d0845	1128	#endif
dcoban	0:1a61c61d0845	1129	}
dcoban	0:1a61c61d0845	1130	#endif /* CHAP_SUPPORT */
dcoban	0:1a61c61d0845	1131
dcoban	0:1a61c61d0845	1132
dcoban	0:1a61c61d0845	1133	#if 0 /* PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	1134	/*
dcoban	0:1a61c61d0845	1135	* set_allowed_addrs() - set the list of allowed addresses.
dcoban	0:1a61c61d0845	1136	*/
dcoban	0:1a61c61d0845	1137	static void
dcoban	0:1a61c61d0845	1138	set_allowed_addrs(int unit, struct wordlist *addrs)
dcoban	0:1a61c61d0845	1139	{
dcoban	0:1a61c61d0845	1140	if (addresses[unit] != NULL) {
dcoban	0:1a61c61d0845	1141	free_wordlist(addresses[unit]);
dcoban	0:1a61c61d0845	1142	}
dcoban	0:1a61c61d0845	1143	addresses[unit] = addrs;
dcoban	0:1a61c61d0845	1144
dcoban	0:1a61c61d0845	1145	#if 0
dcoban	0:1a61c61d0845	1146	/*
dcoban	0:1a61c61d0845	1147	* If there's only one authorized address we might as well
dcoban	0:1a61c61d0845	1148	* ask our peer for that one right away
dcoban	0:1a61c61d0845	1149	*/
dcoban	0:1a61c61d0845	1150	if (addrs != NULL && addrs->next == NULL) {
dcoban	0:1a61c61d0845	1151	char *p = addrs->word;
dcoban	0:1a61c61d0845	1152	struct ipcp_options *wo = &ipcp_wantoptions[unit];
dcoban	0:1a61c61d0845	1153	u32_t a;
dcoban	0:1a61c61d0845	1154	struct hostent *hp;
dcoban	0:1a61c61d0845	1155
dcoban	0:1a61c61d0845	1156	if (wo->hisaddr == 0 && p != '!' && p != '-' && strchr(p, '/') == NULL) {
dcoban	0:1a61c61d0845	1157	hp = gethostbyname(p);
dcoban	0:1a61c61d0845	1158	if (hp != NULL && hp->h_addrtype == AF_INET) {
dcoban	0:1a61c61d0845	1159	a = (u32_t )hp->h_addr;
dcoban	0:1a61c61d0845	1160	} else {
dcoban	0:1a61c61d0845	1161	a = inet_addr(p);
dcoban	0:1a61c61d0845	1162	}
dcoban	0:1a61c61d0845	1163	if (a != (u32_t) -1) {
dcoban	0:1a61c61d0845	1164	wo->hisaddr = a;
dcoban	0:1a61c61d0845	1165	}
dcoban	0:1a61c61d0845	1166	}
dcoban	0:1a61c61d0845	1167	}
dcoban	0:1a61c61d0845	1168	#endif
dcoban	0:1a61c61d0845	1169	}
dcoban	0:1a61c61d0845	1170	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	1171
dcoban	0:1a61c61d0845	1172	/*
dcoban	0:1a61c61d0845	1173	* auth_ip_addr - check whether the peer is authorized to use
dcoban	0:1a61c61d0845	1174	* a given IP address. Returns 1 if authorized, 0 otherwise.
dcoban	0:1a61c61d0845	1175	*/
dcoban	0:1a61c61d0845	1176	int
dcoban	0:1a61c61d0845	1177	auth_ip_addr(int unit, u32_t addr)
dcoban	0:1a61c61d0845	1178	{
dcoban	0:1a61c61d0845	1179	return ip_addr_check(addr, addresses[unit]);
dcoban	0:1a61c61d0845	1180	}
dcoban	0:1a61c61d0845	1181
dcoban	0:1a61c61d0845	1182	static int /* @todo: integrate this funtion into auth_ip_addr()*/
dcoban	0:1a61c61d0845	1183	ip_addr_check(u32_t addr, struct wordlist *addrs)
dcoban	0:1a61c61d0845	1184	{
dcoban	0:1a61c61d0845	1185	/* don't allow loopback or multicast address */
dcoban	0:1a61c61d0845	1186	if (bad_ip_adrs(addr)) {
dcoban	0:1a61c61d0845	1187	return 0;
dcoban	0:1a61c61d0845	1188	}
dcoban	0:1a61c61d0845	1189
dcoban	0:1a61c61d0845	1190	if (addrs == NULL) {
dcoban	0:1a61c61d0845	1191	return !ppp_settings.auth_required; /* no addresses authorized */
dcoban	0:1a61c61d0845	1192	}
dcoban	0:1a61c61d0845	1193
dcoban	0:1a61c61d0845	1194	/* XXX All other addresses allowed. */
dcoban	0:1a61c61d0845	1195	return 1;
dcoban	0:1a61c61d0845	1196	}
dcoban	0:1a61c61d0845	1197
dcoban	0:1a61c61d0845	1198	/*
dcoban	0:1a61c61d0845	1199	* bad_ip_adrs - return 1 if the IP address is one we don't want
dcoban	0:1a61c61d0845	1200	* to use, such as an address in the loopback net or a multicast address.
dcoban	0:1a61c61d0845	1201	* addr is in network byte order.
dcoban	0:1a61c61d0845	1202	*/
dcoban	0:1a61c61d0845	1203	int
dcoban	0:1a61c61d0845	1204	bad_ip_adrs(u32_t addr)
dcoban	0:1a61c61d0845	1205	{
dcoban	0:1a61c61d0845	1206	addr = ntohl(addr);
dcoban	0:1a61c61d0845	1207	return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
dcoban	0:1a61c61d0845	1208	\|\| IN_MULTICAST(addr) \|\| IN_BADCLASS(addr);
dcoban	0:1a61c61d0845	1209	}
dcoban	0:1a61c61d0845	1210
dcoban	0:1a61c61d0845	1211	#if 0 /* UNUSED / / PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	1212	/*
dcoban	0:1a61c61d0845	1213	* some_ip_ok - check a wordlist to see if it authorizes any
dcoban	0:1a61c61d0845	1214	* IP address(es).
dcoban	0:1a61c61d0845	1215	*/
dcoban	0:1a61c61d0845	1216	static int
dcoban	0:1a61c61d0845	1217	some_ip_ok(struct wordlist *addrs)
dcoban	0:1a61c61d0845	1218	{
dcoban	0:1a61c61d0845	1219	for (; addrs != 0; addrs = addrs->next) {
dcoban	0:1a61c61d0845	1220	if (addrs->word[0] == '-')
dcoban	0:1a61c61d0845	1221	break;
dcoban	0:1a61c61d0845	1222	if (addrs->word[0] != '!')
dcoban	0:1a61c61d0845	1223	return 1; /* some IP address is allowed */
dcoban	0:1a61c61d0845	1224	}
dcoban	0:1a61c61d0845	1225	return 0;
dcoban	0:1a61c61d0845	1226	}
dcoban	0:1a61c61d0845	1227
dcoban	0:1a61c61d0845	1228	/*
dcoban	0:1a61c61d0845	1229	* check_access - complain if a secret file has too-liberal permissions.
dcoban	0:1a61c61d0845	1230	*/
dcoban	0:1a61c61d0845	1231	static void
dcoban	0:1a61c61d0845	1232	check_access(FILE f, char filename)
dcoban	0:1a61c61d0845	1233	{
dcoban	0:1a61c61d0845	1234	struct stat sbuf;
dcoban	0:1a61c61d0845	1235
dcoban	0:1a61c61d0845	1236	if (fstat(fileno(f), &sbuf) < 0) {
dcoban	0:1a61c61d0845	1237	warn("cannot stat secret file %s: %m", filename);
dcoban	0:1a61c61d0845	1238	} else if ((sbuf.st_mode & (S_IRWXG \| S_IRWXO)) != 0) {
dcoban	0:1a61c61d0845	1239	warn("Warning - secret file %s has world and/or group access",
dcoban	0:1a61c61d0845	1240	filename);
dcoban	0:1a61c61d0845	1241	}
dcoban	0:1a61c61d0845	1242	}
dcoban	0:1a61c61d0845	1243
dcoban	0:1a61c61d0845	1244
dcoban	0:1a61c61d0845	1245	/*
dcoban	0:1a61c61d0845	1246	* scan_authfile - Scan an authorization file for a secret suitable
dcoban	0:1a61c61d0845	1247	* for authenticating `client' on `server'. The return value is -1
dcoban	0:1a61c61d0845	1248	* if no secret is found, otherwise >= 0. The return value has
dcoban	0:1a61c61d0845	1249	* NONWILD_CLIENT set if the secret didn't have "*" for the client, and
dcoban	0:1a61c61d0845	1250	* NONWILD_SERVER set if the secret didn't have "*" for the server.
dcoban	0:1a61c61d0845	1251	* Any following words on the line up to a "--" (i.e. address authorization
dcoban	0:1a61c61d0845	1252	* info) are placed in a wordlist and returned in *addrs. Any
dcoban	0:1a61c61d0845	1253	* following words (extra options) are placed in a wordlist and
dcoban	0:1a61c61d0845	1254	* returned in *opts.
dcoban	0:1a61c61d0845	1255	* We assume secret is NULL or points to MAXWORDLEN bytes of space.
dcoban	0:1a61c61d0845	1256	*/
dcoban	0:1a61c61d0845	1257	static int
dcoban	0:1a61c61d0845	1258	scan_authfile(FILE f, char client, char server, char secret, struct wordlist addrs, struct wordlist opts, char *filename)
dcoban	0:1a61c61d0845	1259	{
dcoban	0:1a61c61d0845	1260	/* We do not (currently) need this in lwip */
dcoban	0:1a61c61d0845	1261	return 0; /* dummy */
dcoban	0:1a61c61d0845	1262	}
dcoban	0:1a61c61d0845	1263	/*
dcoban	0:1a61c61d0845	1264	* free_wordlist - release memory allocated for a wordlist.
dcoban	0:1a61c61d0845	1265	*/
dcoban	0:1a61c61d0845	1266	static void
dcoban	0:1a61c61d0845	1267	free_wordlist(struct wordlist *wp)
dcoban	0:1a61c61d0845	1268	{
dcoban	0:1a61c61d0845	1269	struct wordlist *next;
dcoban	0:1a61c61d0845	1270
dcoban	0:1a61c61d0845	1271	while (wp != NULL) {
dcoban	0:1a61c61d0845	1272	next = wp->next;
dcoban	0:1a61c61d0845	1273	free(wp);
dcoban	0:1a61c61d0845	1274	wp = next;
dcoban	0:1a61c61d0845	1275	}
dcoban	0:1a61c61d0845	1276	}
dcoban	0:1a61c61d0845	1277
dcoban	0:1a61c61d0845	1278	/*
dcoban	0:1a61c61d0845	1279	* auth_script_done - called when the auth-up or auth-down script
dcoban	0:1a61c61d0845	1280	* has finished.
dcoban	0:1a61c61d0845	1281	*/
dcoban	0:1a61c61d0845	1282	static void
dcoban	0:1a61c61d0845	1283	auth_script_done(void *arg)
dcoban	0:1a61c61d0845	1284	{
dcoban	0:1a61c61d0845	1285	auth_script_pid = 0;
dcoban	0:1a61c61d0845	1286	switch (auth_script_state) {
dcoban	0:1a61c61d0845	1287	case s_up:
dcoban	0:1a61c61d0845	1288	if (auth_state == s_down) {
dcoban	0:1a61c61d0845	1289	auth_script_state = s_down;
dcoban	0:1a61c61d0845	1290	auth_script(_PATH_AUTHDOWN);
dcoban	0:1a61c61d0845	1291	}
dcoban	0:1a61c61d0845	1292	break;
dcoban	0:1a61c61d0845	1293	case s_down:
dcoban	0:1a61c61d0845	1294	if (auth_state == s_up) {
dcoban	0:1a61c61d0845	1295	auth_script_state = s_up;
dcoban	0:1a61c61d0845	1296	auth_script(_PATH_AUTHUP);
dcoban	0:1a61c61d0845	1297	}
dcoban	0:1a61c61d0845	1298	break;
dcoban	0:1a61c61d0845	1299	}
dcoban	0:1a61c61d0845	1300	}
dcoban	0:1a61c61d0845	1301
dcoban	0:1a61c61d0845	1302	/*
dcoban	0:1a61c61d0845	1303	* auth_script - execute a script with arguments
dcoban	0:1a61c61d0845	1304	* interface-name peer-name real-user tty speed
dcoban	0:1a61c61d0845	1305	*/
dcoban	0:1a61c61d0845	1306	static void
dcoban	0:1a61c61d0845	1307	auth_script(char *script)
dcoban	0:1a61c61d0845	1308	{
dcoban	0:1a61c61d0845	1309	char strspeed[32];
dcoban	0:1a61c61d0845	1310	struct passwd *pw;
dcoban	0:1a61c61d0845	1311	char struid[32];
dcoban	0:1a61c61d0845	1312	char *user_name;
dcoban	0:1a61c61d0845	1313	char *argv[8];
dcoban	0:1a61c61d0845	1314
dcoban	0:1a61c61d0845	1315	if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
dcoban	0:1a61c61d0845	1316	user_name = pw->pw_name;
dcoban	0:1a61c61d0845	1317	else {
dcoban	0:1a61c61d0845	1318	slprintf(struid, sizeof(struid), "%d", getuid());
dcoban	0:1a61c61d0845	1319	user_name = struid;
dcoban	0:1a61c61d0845	1320	}
dcoban	0:1a61c61d0845	1321	slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
dcoban	0:1a61c61d0845	1322
dcoban	0:1a61c61d0845	1323	argv[0] = script;
dcoban	0:1a61c61d0845	1324	argv[1] = ifname;
dcoban	0:1a61c61d0845	1325	argv[2] = peer_authname;
dcoban	0:1a61c61d0845	1326	argv[3] = user_name;
dcoban	0:1a61c61d0845	1327	argv[4] = devnam;
dcoban	0:1a61c61d0845	1328	argv[5] = strspeed;
dcoban	0:1a61c61d0845	1329	argv[6] = NULL;
dcoban	0:1a61c61d0845	1330
dcoban	0:1a61c61d0845	1331	auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
dcoban	0:1a61c61d0845	1332	}
dcoban	0:1a61c61d0845	1333	#endif /* 0 / / PAP_SUPPORT \|\| CHAP_SUPPORT */
dcoban	0:1a61c61d0845	1334	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	03 Apr 2012
Imports:	2
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	1

NetStack/lwip/netif/ppp/auth.c@0:1a61c61d0845, 2012-04-03 (annotated)

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