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
41 static int (*ypresp_allfn)(u_long, char *, int, char *, int, void *);
42 static void *ypresp_data;
43
44 static bool_t
_xdr_ypresp_all_seq(XDR * xdrs,u_long * objp)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;
94 fail:
95 xdr_free(xdr_ypresp_all, (char *)&out);
96 }
97 return rc;
98 }
99
100 int
yp_all(const char * dom,const char * inmap,struct ypall_callback * incallback)101 yp_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
117 again:
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