| File: | src/usr.bin/ypwhich/ypwhich.c |
| Warning: | line 241, column 3 Value stored to 'r' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: ypwhich.c,v 1.23 2015/02/08 23:40:35 deraadt Exp $ */ |
| 2 | /* $NetBSD: ypwhich.c,v 1.6 1996/05/13 02:43:48 thorpej Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com> |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| 18 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | #include <sys/types.h> |
| 31 | #include <sys/socket.h> |
| 32 | |
| 33 | #include <netinet/in.h> |
| 34 | #include <arpa/inet.h> |
| 35 | |
| 36 | #include <ctype.h> |
| 37 | #include <err.h> |
| 38 | #include <netdb.h> |
| 39 | #include <stdio.h> |
| 40 | #include <stdlib.h> |
| 41 | #include <string.h> |
| 42 | #include <unistd.h> |
| 43 | |
| 44 | #include <rpc/rpc.h> |
| 45 | #include <rpc/xdr.h> |
| 46 | #include <rpcsvc/yp.h> |
| 47 | #include <rpcsvc/ypclnt.h> |
| 48 | |
| 49 | #include "yplib_host.h" |
| 50 | |
| 51 | struct ypalias { |
| 52 | char *alias, *name; |
| 53 | } ypaliases[] = { |
| 54 | { "passwd", "passwd.byname" }, |
| 55 | { "group", "group.byname" }, |
| 56 | { "networks", "networks.byaddr" }, |
| 57 | { "hosts", "hosts.byaddr" }, |
| 58 | { "protocols", "protocols.bynumber" }, |
| 59 | { "services", "services.byname" }, |
| 60 | { "aliases", "mail.aliases" }, |
| 61 | { "ethers", "ethers.byname" }, |
| 62 | }; |
| 63 | |
| 64 | int bind_host(char *dom, struct sockaddr_in *sin); |
| 65 | |
| 66 | static void |
| 67 | usage(void) |
| 68 | { |
| 69 | fprintf(stderr(&__sF[2]), |
| 70 | "usage: ypwhich [-t] [-d domain] [[-h] host]\n" |
| 71 | " ypwhich [-t] [-d domain] [-h host] -m [mname]\n" |
| 72 | " ypwhich -x\n"); |
| 73 | exit(1); |
| 74 | } |
| 75 | |
| 76 | |
| 77 | /* |
| 78 | * Like yp_bind except can query a specific host |
| 79 | */ |
| 80 | int |
| 81 | bind_host(char *dom, struct sockaddr_in *sin) |
| 82 | { |
| 83 | struct hostent *hent = NULL((void *)0); |
| 84 | struct ypbind_resp ypbr; |
| 85 | struct in_addr ss_addr; |
| 86 | struct timeval tv; |
| 87 | CLIENT *client; |
| 88 | int sock, r; |
| 89 | |
| 90 | sock = RPC_ANYSOCK-1; |
| 91 | tv.tv_sec = 15; |
| 92 | tv.tv_usec = 0; |
| 93 | client = clntudp_create(sin, YPBINDPROG((u_long)100007), YPBINDVERS((u_long)2), tv, &sock); |
| 94 | |
| 95 | if (client == NULL((void *)0)) { |
| 96 | fprintf(stderr(&__sF[2]), "ypwhich: host is not bound to a ypmaster\n"); |
| 97 | return YPERR_YPBIND10; |
| 98 | } |
| 99 | |
| 100 | tv.tv_sec = 5; |
| 101 | tv.tv_usec = 0; |
| 102 | |
| 103 | r = clnt_call(client, YPBINDPROC_DOMAIN,((*(client)->cl_ops->cl_call)(client, ((u_long)1), xdr_domainname , (caddr_t)&dom, xdr_ypbind_resp, (caddr_t)&ypbr, tv) ) |
| 104 | xdr_domainname, &dom, xdr_ypbind_resp, &ypbr, tv)((*(client)->cl_ops->cl_call)(client, ((u_long)1), xdr_domainname , (caddr_t)&dom, xdr_ypbind_resp, (caddr_t)&ypbr, tv) ); |
| 105 | if (r != RPC_SUCCESS) { |
| 106 | fprintf(stderr(&__sF[2]), "can't clnt_call: %s\n", |
| 107 | yperr_string(YPERR_YPBIND10)); |
| 108 | clnt_destroy(client)((*(client)->cl_ops->cl_destroy)(client)); |
| 109 | return YPERR_YPBIND10; |
| 110 | } else { |
| 111 | if (ypbr.ypbind_status != YPBIND_SUCC_VAL) { |
| 112 | fprintf(stderr(&__sF[2]), "can't yp_bind: Reason: %s\n", |
| 113 | yperr_string(ypbr.ypbind_status)); |
| 114 | clnt_destroy(client)((*(client)->cl_ops->cl_destroy)(client)); |
| 115 | return r; |
| 116 | } |
| 117 | } |
| 118 | clnt_destroy(client)((*(client)->cl_ops->cl_destroy)(client)); |
| 119 | |
| 120 | memmove(&ss_addr.s_addr, &ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr, |
| 121 | sizeof (ss_addr)); |
| 122 | |
| 123 | hent = gethostbyaddr((char *)&ss_addr.s_addr, sizeof(ss_addr.s_addr), |
| 124 | AF_INET2); |
| 125 | if (hent != NULL((void *)0)) |
| 126 | printf("%s\n", hent->h_name); |
| 127 | else |
| 128 | printf("%s\n", inet_ntoa(ss_addr)); |
| 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | int |
| 134 | main(int argc, char *argv[]) |
| 135 | { |
| 136 | char *domain, *master, *map = NULL((void *)0), *host = NULL((void *)0); |
| 137 | int notrans = 0, mode = 0, c, r, i; |
| 138 | struct ypmaplist *ypml, *y; |
| 139 | struct sockaddr_in sin; |
| 140 | struct hostent *hent; |
| 141 | CLIENT *client = NULL((void *)0); |
| 142 | |
| 143 | yp_get_default_domain(&domain); |
| 144 | if (domain == NULL((void *)0)) |
| 145 | errx(1, "YP domain name not set"); |
| 146 | |
| 147 | while ((c = getopt(argc, argv, "xd:h:mt")) != -1) |
| 148 | switch (c) { |
| 149 | case 'x': |
| 150 | for (i=0; i<sizeof ypaliases/sizeof ypaliases[0]; i++) |
| 151 | printf("Use \"%s\" for \"%s\"\n", |
| 152 | ypaliases[i].alias, ypaliases[i].name); |
| 153 | exit(0); |
| 154 | case 'h': |
| 155 | host = optarg; |
| 156 | break; |
| 157 | case 'd': |
| 158 | domain = optarg; |
| 159 | break; |
| 160 | case 't': |
| 161 | notrans = 1; |
| 162 | break; |
| 163 | case 'm': |
| 164 | mode = 1; |
| 165 | break; |
| 166 | default: |
| 167 | usage(); |
| 168 | } |
| 169 | argc -= optind; |
| 170 | argv += optind; |
| 171 | |
| 172 | if (mode == 0) { |
| 173 | switch (argc) { |
| 174 | case 0: |
| 175 | memset(&sin, 0, sizeof sin); |
| 176 | sin.sin_family = AF_INET2; |
| 177 | sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK)(__uint32_t)(__builtin_constant_p(((u_int32_t)(0x7f000001))) ? (__uint32_t)(((__uint32_t)(((u_int32_t)(0x7f000001))) & 0xff ) << 24 | ((__uint32_t)(((u_int32_t)(0x7f000001))) & 0xff00) << 8 | ((__uint32_t)(((u_int32_t)(0x7f000001)) ) & 0xff0000) >> 8 | ((__uint32_t)(((u_int32_t)(0x7f000001 ))) & 0xff000000) >> 24) : __swap32md(((u_int32_t)( 0x7f000001)))); |
| 178 | |
| 179 | if (bind_host(domain, &sin)) |
| 180 | exit(1); |
| 181 | break; |
| 182 | case 1: |
| 183 | bzero(&sin, sizeof sin); |
| 184 | sin.sin_family = AF_INET2; |
| 185 | if (inet_aton(argv[0], &sin.sin_addr) == 0) { |
| 186 | hent = gethostbyname(argv[0]); |
| 187 | if (!hent) { |
| 188 | fprintf(stderr(&__sF[2]), "ypwhich: host %s unknown\n", |
| 189 | argv[0]); |
| 190 | exit(1); |
| 191 | } |
| 192 | bcopy(hent->h_addrh_addr_list[0], &sin.sin_addr, |
| 193 | sizeof sin.sin_addr); |
| 194 | } |
| 195 | if (bind_host(domain, &sin)) |
| 196 | exit(1); |
| 197 | break; |
| 198 | default: |
| 199 | usage(); |
| 200 | } |
| 201 | exit(0); |
| 202 | } |
| 203 | |
| 204 | if (argc > 1) |
| 205 | usage(); |
| 206 | |
| 207 | if (host != NULL((void *)0)) |
| 208 | client = yp_bind_host(host, YPPROG((u_long)100004), YPVERS((u_long)2), 0, 1); |
| 209 | |
| 210 | if (argv[0]) { |
| 211 | map = argv[0]; |
| 212 | for (i=0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++) |
| 213 | if (strcmp(map, ypaliases[i].alias) == 0) |
| 214 | map = ypaliases[i].name; |
| 215 | |
| 216 | if (host != NULL((void *)0)) |
| 217 | r = yp_master_host(client, domain, map, &master); |
| 218 | else |
| 219 | r = yp_master(domain, map, &master); |
| 220 | |
| 221 | switch (r) { |
| 222 | case 0: |
| 223 | printf("%s\n", master); |
| 224 | free(master); |
| 225 | break; |
| 226 | case YPERR_YPBIND10: |
| 227 | fprintf(stderr(&__sF[2]), "ypwhich: not running ypbind\n"); |
| 228 | exit(1); |
| 229 | default: |
| 230 | fprintf(stderr(&__sF[2]), "Can't find master for map %s. Reason: %s\n", |
| 231 | map, yperr_string(r)); |
| 232 | exit(1); |
| 233 | } |
| 234 | exit(0); |
| 235 | } |
| 236 | |
| 237 | ypml = NULL((void *)0); |
| 238 | if (host != NULL((void *)0)) |
| 239 | r = yp_maplist_host(client, domain, &ypml); |
| 240 | else |
| 241 | r = yp_maplist(domain, &ypml); |
Value stored to 'r' is never read | |
| 242 | |
| 243 | r = 0; |
| 244 | switch (r) { |
| 245 | case 0: |
| 246 | for (y = ypml; y; ) { |
| 247 | ypml = y; |
| 248 | if (host != NULL((void *)0)) { |
| 249 | r = yp_master_host(client, |
| 250 | domain, ypml->map, &master); |
| 251 | } else { |
| 252 | r = yp_master(domain, ypml->map, &master); |
| 253 | } |
| 254 | switch (r) { |
| 255 | case 0: |
| 256 | printf("%s %s\n", ypml->map, master); |
| 257 | free(master); |
| 258 | break; |
| 259 | default: |
| 260 | fprintf(stderr(&__sF[2]), |
| 261 | "YP: can't find the master of %s: Reason: %s\n", |
| 262 | ypml->map, yperr_string(r)); |
| 263 | break; |
| 264 | } |
| 265 | y = ypml->next; |
| 266 | free(ypml); |
| 267 | } |
| 268 | break; |
| 269 | case YPERR_YPBIND10: |
| 270 | fprintf(stderr(&__sF[2]), "ypwhich: not running ypbind\n"); |
| 271 | exit(1); |
| 272 | default: |
| 273 | fprintf(stderr(&__sF[2]), "Can't get map list for domain %s. Reason: %s\n", |
| 274 | domain, yperr_string(r)); |
| 275 | exit(1); |
| 276 | } |
| 277 | exit(0); |
| 278 | } |