[gssapi-openssh.git] / openssh / auth-bsdauth.c

/*
 * 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"
RCSID("$OpenBSD: auth-bsdauth.c,v 1.4 2002/06/19 00:27:55 deraadt Exp $");

#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 = xmalloc(*numprompts * sizeof(char*));
	*echo_on = xmalloc(*numprompts * sizeof(u_int));
	(*echo_on)[0] = 0;
	(*prompts)[0] = xstrdup(challenge);

	return 0;
}

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

	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
3c0ef626	1	/*
	2	* Copyright (c) 2001 Markus Friedl. All rights reserved.
	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions
	6	* are met:
	7	* 1. Redistributions of source code must retain the above copyright
	8	* notice, this list of conditions and the following disclaimer.
	9	* 2. Redistributions in binary form must reproduce the above copyright
	10	* notice, this list of conditions and the following disclaimer in the
	11	* documentation and/or other materials provided with the distribution.
	12	*
	13	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	15	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	16	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	17	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	18	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	19	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	20	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	21	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	22	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	23	*/
	24	#include "includes.h"
f5799ae1	25	RCSID("$OpenBSD: auth-bsdauth.c,v 1.4 2002/06/19 00:27:55 deraadt Exp $");
3c0ef626	26
	27	#ifdef BSD_AUTH
	28	#include "xmalloc.h"
	29	#include "auth.h"
	30	#include "log.h"
700318f3	31	#include "monitor_wrap.h"
3c0ef626	32
	33	static void *
	34	bsdauth_init_ctx(Authctxt *authctxt)
	35	{
	36	return authctxt;
	37	}
	38
700318f3	39	int
e9a17296	40	bsdauth_query(void ctx, char name, char *infotxt,
3c0ef626	41	u_int numprompts, char prompts, u_int echo_on)
3c0ef626	42	{
e9a17296	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",
3c0ef626	58	authctxt->style ? authctxt->style : "<default>");
e9a17296	59	authctxt->as = auth_userchallenge(authctxt->user,
f5799ae1	60	authctxt->style, "auth-ssh", &challenge);
e9a17296	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
f5799ae1	69	*name = xstrdup("");
f5799ae1	70	*infotxt = xstrdup("");
e9a17296	71	*numprompts = 1;
	72	prompts = xmalloc(numprompts * sizeof(char*));
	73	echo_on = xmalloc(numprompts * sizeof(u_int));
	74	(*echo_on)[0] = 0;
	75	(*prompts)[0] = xstrdup(challenge);
	76
	77	return 0;
3c0ef626	78	}
3c0ef626	79
700318f3	80	int
3c0ef626	81	bsdauth_respond(void ctx, u_int numresponses, char *responses)
3c0ef626	82	{
e9a17296	83	Authctxt *authctxt = ctx;
	84	int authok;
	85
	86	if (authctxt->as == 0)
	87	error("bsdauth_respond: no bsd auth session");
3c0ef626	88
e9a17296	89	if (numresponses != 1)
e9a17296	90	return -1;
3c0ef626	91
e9a17296	92	authok = auth_userresponse(authctxt->as, responses[0], 0);
	93	authctxt->as = NULL;
	94	debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
3c0ef626	95
e9a17296	96	return (authok == 0) ? -1 : 0;
3c0ef626	97	}
	98
	99	static void
	100	bsdauth_free_ctx(void *ctx)
	101	{
e9a17296	102	Authctxt *authctxt = ctx;
3c0ef626	103
e9a17296	104	if (authctxt && authctxt->as) {
	105	auth_close(authctxt->as);
	106	authctxt->as = NULL;
	107	}
3c0ef626	108	}
	109
	110	KbdintDevice bsdauth_device = {
	111	"bsdauth",
	112	bsdauth_init_ctx,
	113	bsdauth_query,
	114	bsdauth_respond,
	115	bsdauth_free_ctx
	116	};
700318f3	117
	118	KbdintDevice mm_bsdauth_device = {
	119	"bsdauth",
	120	bsdauth_init_ctx,
	121	mm_bsdauth_query,
	122	mm_bsdauth_respond,
	123	bsdauth_free_ctx
	124	};
3c0ef626	125	#endif