[openssh.git] / auth-bsdauth.c

/* $OpenBSD: auth-bsdauth.c,v 1.9 2006/03/25 13:17:01 djm Exp $ */
/*
 * Copyright (c) 2001 Markus Friedl.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "includes.h"

#ifdef BSD_AUTH
#include "xmalloc.h"
#include "auth.h"
#include "log.h"
#include "monitor_wrap.h"

static void *
bsdauth_init_ctx(Authctxt *authctxt)
{
	return authctxt;
}

int
bsdauth_query(void *ctx, char **name, char **infotxt,
   u_int *numprompts, char ***prompts, u_int **echo_on)
{
	Authctxt *authctxt = ctx;
	char *challenge = NULL;

	if (authctxt->as != NULL) {
		debug2("bsdauth_query: try reuse session");
		challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
		if (challenge == NULL) {
			auth_close(authctxt->as);
			authctxt->as = NULL;
		}
	}

	if (challenge == NULL) {
		debug2("bsdauth_query: new bsd auth session");
		debug3("bsdauth_query: style %s",
		    authctxt->style ? authctxt->style : "<default>");
		authctxt->as = auth_userchallenge(authctxt->user,
		    authctxt->style, "auth-ssh", &challenge);
		if (authctxt->as == NULL)
			challenge = NULL;
		debug2("bsdauth_query: <%s>", challenge ? challenge : "empty");
	}

	if (challenge == NULL)
		return -1;

	*name = xstrdup("");
	*infotxt = xstrdup("");
	*numprompts = 1;
	*prompts = xcalloc(*numprompts, sizeof(char *));
	*echo_on = xcalloc(*numprompts, sizeof(u_int));
	(*prompts)[0] = xstrdup(challenge);

	return 0;
}

int
bsdauth_respond(void *ctx, u_int numresponses, char **responses)
{
	Authctxt *authctxt = ctx;
	int authok;

	if (!authctxt->valid)
		return -1;

	if (authctxt->as == 0)
		error("bsdauth_respond: no bsd auth session");

	if (numresponses != 1)
		return -1;

	authok = auth_userresponse(authctxt->as, responses[0], 0);
	authctxt->as = NULL;
	debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);

	return (authok == 0) ? -1 : 0;
}

static void
bsdauth_free_ctx(void *ctx)
{
	Authctxt *authctxt = ctx;

	if (authctxt && authctxt->as) {
		auth_close(authctxt->as);
		authctxt->as = NULL;
	}
}

KbdintDevice bsdauth_device = {
	"bsdauth",
	bsdauth_init_ctx,
	bsdauth_query,
	bsdauth_respond,
	bsdauth_free_ctx
};

KbdintDevice mm_bsdauth_device = {
	"bsdauth",
	bsdauth_init_ctx,
	mm_bsdauth_query,
	mm_bsdauth_respond,
	bsdauth_free_ctx
};
#endif
Commit	Line	Data
c1cb7bae	1	/* $OpenBSD: auth-bsdauth.c,v 1.9 2006/03/25 13:17:01 djm Exp $ */
bf093080	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"
bf093080	26
	27	#ifdef BSD_AUTH
	28	#include "xmalloc.h"
	29	#include "auth.h"
	30	#include "log.h"
1853d1ef	31	#include "monitor_wrap.h"
bf093080	32
	33	static void *
	34	bsdauth_init_ctx(Authctxt *authctxt)
	35	{
	36	return authctxt;
	37	}
	38
1853d1ef	39	int
184eed6a	40	bsdauth_query(void ctx, char name, char *infotxt,
bf093080	41	u_int numprompts, char prompts, u_int echo_on)
bf093080	42	{
184eed6a	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",
bf093080	58	authctxt->style ? authctxt->style : "<default>");
184eed6a	59	authctxt->as = auth_userchallenge(authctxt->user,
7203d6bb	60	authctxt->style, "auth-ssh", &challenge);
184eed6a	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
7203d6bb	69	*name = xstrdup("");
7203d6bb	70	*infotxt = xstrdup("");
184eed6a	71	*numprompts = 1;
52e3daed	72	prompts = xcalloc(numprompts, sizeof(char *));
52e3daed	73	echo_on = xcalloc(numprompts, sizeof(u_int));
184eed6a	74	(*prompts)[0] = xstrdup(challenge);
	75
	76	return 0;
bf093080	77	}
bf093080	78
1853d1ef	79	int
bf093080	80	bsdauth_respond(void ctx, u_int numresponses, char *responses)
bf093080	81	{
184eed6a	82	Authctxt *authctxt = ctx;
	83	int authok;
	84
37ea4f91	85	if (!authctxt->valid)
	86	return -1;
	87
184eed6a	88	if (authctxt->as == 0)
184eed6a	89	error("bsdauth_respond: no bsd auth session");
bf093080	90
184eed6a	91	if (numresponses != 1)
184eed6a	92	return -1;
bf093080	93
184eed6a	94	authok = auth_userresponse(authctxt->as, responses[0], 0);
	95	authctxt->as = NULL;
	96	debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
bf093080	97
184eed6a	98	return (authok == 0) ? -1 : 0;
bf093080	99	}
	100
	101	static void
	102	bsdauth_free_ctx(void *ctx)
	103	{
184eed6a	104	Authctxt *authctxt = ctx;
bf093080	105
184eed6a	106	if (authctxt && authctxt->as) {
	107	auth_close(authctxt->as);
	108	authctxt->as = NULL;
	109	}
bf093080	110	}
	111
	112	KbdintDevice bsdauth_device = {
	113	"bsdauth",
	114	bsdauth_init_ctx,
	115	bsdauth_query,
	116	bsdauth_respond,
	117	bsdauth_free_ctx
	118	};
1853d1ef	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	};
bf093080	127	#endif