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Commit	Line	Data
	1	/*
	2	* Copyright (c) 1999 Dug Song. All rights reserved.
	3	* Copyright (c) 2002 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
	26	#include "includes.h"
	27	#include "uuencode.h"
	28
	29	RCSID("$OpenBSD: radix.c,v 1.22 2002/09/09 14:54:15 markus Exp $");
	30
	31	#ifdef AFS
	32	#include <krb.h>
	33
	34	#include <radix.h>
	35	#include "bufaux.h"
	36
	37	int
	38	creds_to_radix(CREDENTIALS creds, u_char buf, size_t buflen)
	39	{
	40	Buffer b;
	41	int ret;
	42
	43	buffer_init(&b);
	44
	45	buffer_put_char(&b, 1); /* version */
	46
	47	buffer_append(&b, creds->service, strlen(creds->service));
	48	buffer_put_char(&b, '\0');
	49	buffer_append(&b, creds->instance, strlen(creds->instance));
	50	buffer_put_char(&b, '\0');
	51	buffer_append(&b, creds->realm, strlen(creds->realm));
	52	buffer_put_char(&b, '\0');
	53	buffer_append(&b, creds->pname, strlen(creds->pname));
	54	buffer_put_char(&b, '\0');
	55	buffer_append(&b, creds->pinst, strlen(creds->pinst));
	56	buffer_put_char(&b, '\0');
	57
	58	/* Null string to repeat the realm. */
	59	buffer_put_char(&b, '\0');
	60
	61	buffer_put_int(&b, creds->issue_date);
	62	buffer_put_int(&b, krb_life_to_time(creds->issue_date,
	63	creds->lifetime));
	64	buffer_append(&b, creds->session, sizeof(creds->session));
	65	buffer_put_short(&b, creds->kvno);
	66
	67	/* 32 bit size + data */
	68	buffer_put_string(&b, creds->ticket_st.dat, creds->ticket_st.length);
	69
	70	ret = uuencode(buffer_ptr(&b), buffer_len(&b), (char *)buf, buflen);
	71
	72	buffer_free(&b);
	73	return ret;
	74	}
	75
	76	#define GETSTRING(b, t, tlen) \
	77	do { \
	78	int i, found = 0; \
	79	for (i = 0; i < tlen; i++) { \
	80	if (buffer_len(b) == 0) \
	81	goto done; \
	82	t[i] = buffer_get_char(b); \
	83	if (t[i] == '\0') { \
	84	found = 1; \
	85	break; \
	86	} \
	87	} \
	88	if (!found) \
	89	goto done; \
	90	} while(0)
	91
	92	int
	93	radix_to_creds(const char buf, CREDENTIALS creds)
	94	{
	95	Buffer b;
	96	u_char *space;
	97	char c, version, *p;
	98	u_int endTime, len;
	99	int blen, ret;
	100
	101	ret = 0;
	102	blen = strlen(buf);
	103
	104	/* sanity check for size */
	105	if (blen > 8192)
	106	return 0;
	107
	108	buffer_init(&b);
	109	space = buffer_append_space(&b, blen);
	110
	111	/* check version and length! */
	112	len = uudecode(buf, space, blen);
	113	if (len < 1)
	114	goto done;
	115
	116	version = buffer_get_char(&b);
	117
	118	GETSTRING(&b, creds->service, sizeof creds->service);
	119	GETSTRING(&b, creds->instance, sizeof creds->instance);
	120	GETSTRING(&b, creds->realm, sizeof creds->realm);
	121	GETSTRING(&b, creds->pname, sizeof creds->pname);
	122	GETSTRING(&b, creds->pinst, sizeof creds->pinst);
	123
	124	if (buffer_len(&b) == 0)
	125	goto done;
	126
	127	/* Ignore possibly different realm. */
	128	while (buffer_len(&b) > 0 && (c = buffer_get_char(&b)) != '\0')
	129	;
	130
	131	if (buffer_len(&b) == 0)
	132	goto done;
	133
	134	creds->issue_date = buffer_get_int(&b);
	135
	136	endTime = buffer_get_int(&b);
	137	creds->lifetime = krb_time_to_life(creds->issue_date, endTime);
	138
	139	len = buffer_len(&b);
	140	if (len < sizeof(creds->session))
	141	goto done;
	142	memcpy(&creds->session, buffer_ptr(&b), sizeof(creds->session));
	143	buffer_consume(&b, sizeof(creds->session));
	144
	145	creds->kvno = buffer_get_short(&b);
	146
	147	p = buffer_get_string(&b, &len);
	148	if (len < 0 \|\| len > sizeof(creds->ticket_st.dat))
	149	goto done;
	150	memcpy(&creds->ticket_st.dat, p, len);
	151	creds->ticket_st.length = len;
	152
	153	ret = 1;
	154	done:
	155	buffer_free(&b);
	156	return ret;
	157	}
	158	#endif /* AFS */