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Commit	Line	Data
	1	/* $OpenBSD: auth-bsdauth.c,v 1.9 2006/03/25 13:17:01 djm Exp $ */
	2	/*
	3	* Copyright (c) 2001 Markus Friedl. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	*
	14	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	17	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	24	*/
	25	#include "includes.h"
	26
	27	#ifdef BSD_AUTH
	28	#include "xmalloc.h"
	29	#include "auth.h"
	30	#include "log.h"
	31	#include "monitor_wrap.h"
	32
	33	static void *
	34	bsdauth_init_ctx(Authctxt *authctxt)
	35	{
	36	return authctxt;
	37	}
	38
	39	int
	40	bsdauth_query(void ctx, char name, char *infotxt,
	41	u_int numprompts, char prompts, u_int echo_on)
	42	{
	43	Authctxt *authctxt = ctx;
	44	char *challenge = NULL;
	45
	46	if (authctxt->as != NULL) {
	47	debug2("bsdauth_query: try reuse session");
	48	challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
	49	if (challenge == NULL) {
	50	auth_close(authctxt->as);
	51	authctxt->as = NULL;
	52	}
	53	}
	54
	55	if (challenge == NULL) {
	56	debug2("bsdauth_query: new bsd auth session");
	57	debug3("bsdauth_query: style %s",
	58	authctxt->style ? authctxt->style : "<default>");
	59	authctxt->as = auth_userchallenge(authctxt->user,
	60	authctxt->style, "auth-ssh", &challenge);
	61	if (authctxt->as == NULL)
	62	challenge = NULL;
	63	debug2("bsdauth_query: <%s>", challenge ? challenge : "empty");
	64	}
	65
	66	if (challenge == NULL)
	67	return -1;
	68
	69	*name = xstrdup("");
	70	*infotxt = xstrdup("");
	71	*numprompts = 1;
	72	prompts = xcalloc(numprompts, sizeof(char *));
	73	echo_on = xcalloc(numprompts, sizeof(u_int));
	74	(*prompts)[0] = xstrdup(challenge);
	75
	76	return 0;
	77	}
	78
	79	int
	80	bsdauth_respond(void ctx, u_int numresponses, char *responses)
	81	{
	82	Authctxt *authctxt = ctx;
	83	int authok;
	84
	85	if (!authctxt->valid)
	86	return -1;
	87
	88	if (authctxt->as == 0)
	89	error("bsdauth_respond: no bsd auth session");
	90
	91	if (numresponses != 1)
	92	return -1;
	93
	94	authok = auth_userresponse(authctxt->as, responses[0], 0);
	95	authctxt->as = NULL;
	96	debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
	97
	98	return (authok == 0) ? -1 : 0;
	99	}
	100
	101	static void
	102	bsdauth_free_ctx(void *ctx)
	103	{
	104	Authctxt *authctxt = ctx;
	105
	106	if (authctxt && authctxt->as) {
	107	auth_close(authctxt->as);
	108	authctxt->as = NULL;
	109	}
	110	}
	111
	112	KbdintDevice bsdauth_device = {
	113	"bsdauth",
	114	bsdauth_init_ctx,
	115	bsdauth_query,
	116	bsdauth_respond,
	117	bsdauth_free_ctx
	118	};
	119
	120	KbdintDevice mm_bsdauth_device = {
	121	"bsdauth",
	122	bsdauth_init_ctx,
	123	mm_bsdauth_query,
	124	mm_bsdauth_respond,
	125	bsdauth_free_ctx
	126	};
	127	#endif