1/*	$OpenBSD: yp_all.c,v 1.16 2022/08/02 16:59:29 deraadt Exp $ */
2/*
3 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/types.h>
29#include <sys/socket.h>
30#include <stdio.h>
31#include <stdlib.h>
32#include <string.h>
33#include <limits.h>
34#include <unistd.h>
35#include <rpc/rpc.h>
36#include <rpc/xdr.h>
37#include <rpcsvc/yp.h>
38#include <rpcsvc/ypclnt.h>
39#include "ypinternal.h"
40
41static int (*ypresp_allfn)(u_long, char *, int, char *, int, void *);
42static void *ypresp_data;
43
44static bool_t
45_xdr_ypresp_all_seq(XDR *xdrs, u_long *objp)
46{
47	struct ypresp_all out;
48	u_long status;
49	char *key, *val;
50	int size;
51	int done = 0;  /* set to 1 when the user does not want more data */
52	bool_t rc = TRUE;  /* FALSE at the end of loop signals failure */
53
54	memset(&out, 0, sizeof out);
55	while (rc && !done) {
56		rc = FALSE;
57		if (!xdr_ypresp_all(xdrs, &out)) {
58			*objp = (u_long)YP_YPERR;
59			goto fail;
60		}
61		if (out.more == 0)
62			goto fail;
63		status = out.ypresp_all_u.val.stat;
64		if (status == YP_TRUE) {
65			size = out.ypresp_all_u.val.key.keydat_len;
66			if ((key = malloc(size + 1)) == NULL) {
67				*objp = (u_long)YP_YPERR;
68				goto fail;
69			}
70			(void)memcpy(key, out.ypresp_all_u.val.key.keydat_val,
71			    size);
72			key[size] = '\0';
73
74			size = out.ypresp_all_u.val.val.valdat_len;
75			if ((val = malloc(size + 1)) == NULL) {
76				free(key);
77				*objp = (u_long)YP_YPERR;
78				goto fail;
79			}
80			(void)memcpy(val, out.ypresp_all_u.val.val.valdat_val,
81			    size);
82			val[size] = '\0';
83
84			done = (*ypresp_allfn)(status, key,
85			    out.ypresp_all_u.val.key.keydat_len, val,
86			    out.ypresp_all_u.val.val.valdat_len, ypresp_data);
87			free(key);
88			free(val);
89		} else
90			done = 1;
91		if (status != YP_NOMORE)
92			*objp = status;
93		rc = TRUE;
94fail:
95		xdr_free(xdr_ypresp_all, (char *)&out);
96	}
97	return rc;
98}
99
100int
101yp_all(const char *dom, const char *inmap, struct ypall_callback *incallback)
102{
103	struct ypreq_nokey yprnk;
104	struct dom_binding ypbinding;
105	struct timeval  tv;
106	int connected = 1;
107	u_long		status;
108	int		r = 0, s;
109
110	if (dom == NULL || strlen(dom) == 0)
111		return YPERR_BADARGS;
112
113	if (strlen(dom) > YPMAXDOMAIN || inmap == NULL ||
114	    *inmap == '\0' || strlen(inmap) > YPMAXMAP || incallback == NULL)
115		return YPERR_BADARGS;
116
117again:
118	s = ypconnect(SOCK_STREAM);
119	if (s == -1)
120		return YPERR_DOMAIN;	/* YP not running */
121	ypbinding.dom_socket = s;
122	ypbinding.dom_server_addr.sin_port = -1; /* don't consult portmap */
123
124	ypbinding.dom_client = clnttcp_create(&ypbinding.dom_server_addr,
125	    YPPROG, YPVERS, &ypbinding.dom_socket, 0, 0);
126	if (ypbinding.dom_client == NULL) {
127		close(ypbinding.dom_socket);
128		ypbinding.dom_socket = -1;
129		clnt_pcreateerror("clnttcp_create");
130		goto again;
131	}
132	clnt_control(ypbinding.dom_client, CLSET_CONNECTED, &connected);
133
134	tv.tv_sec = _yplib_timeout;
135	tv.tv_usec = 0;
136	yprnk.domain = (char *)dom;
137	yprnk.map = (char *)inmap;
138	ypresp_allfn = incallback->foreach;
139	ypresp_data = (void *) incallback->data;
140	(void) clnt_call(ypbinding.dom_client, YPPROC_ALL,
141	    xdr_ypreq_nokey, &yprnk, _xdr_ypresp_all_seq, &status, tv);
142	close(ypbinding.dom_socket);
143	clnt_destroy(ypbinding.dom_client);
144
145	if (status != YP_FALSE)
146		r = ypprot_err(status);
147	return r;
148}
149