| File: | src/usr.sbin/ypserv/yppush/yppush.c |
| Warning: | line 325, column 3 Value stored to 'r' is never read |
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| 1 | /* $OpenBSD: yppush.c,v 1.31 2015/01/16 06:40:23 deraadt Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1995 Mats O Jansson <moj@stacken.kth.se> |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| 17 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <sys/types.h> |
| 30 | #include <sys/stat.h> |
| 31 | #include <sys/resource.h> |
| 32 | #include <sys/wait.h> |
| 33 | |
| 34 | #include <stdio.h> |
| 35 | #include <unistd.h> |
| 36 | #include <stdlib.h> |
| 37 | #include <signal.h> |
| 38 | #include <ctype.h> |
| 39 | |
| 40 | #include <rpc/rpc.h> |
| 41 | #include <rpc/xdr.h> |
| 42 | #include <rpcsvc/yp.h> |
| 43 | #include <rpcsvc/ypclnt.h> |
| 44 | |
| 45 | #include <netdb.h> |
| 46 | #include <string.h> |
| 47 | #include <errno(*__errno()).h> |
| 48 | #include <fcntl.h> |
| 49 | |
| 50 | #include "yplib_host.h" |
| 51 | #include "ypdef.h" |
| 52 | #include "ypdb.h" |
| 53 | |
| 54 | int Verbose = 0; |
| 55 | char Domain[HOST_NAME_MAX255+1], Map[255]; |
| 56 | u_int32_t OrderNum; |
| 57 | char *master; |
| 58 | |
| 59 | extern void yppush_xfrrespprog_1(struct svc_req *request, SVCXPRT *xprt); |
| 60 | extern bool_tint32_t xdr_ypreq_xfr(XDR *, struct ypreq_xfr *); |
| 61 | |
| 62 | static void |
| 63 | usage(void) |
| 64 | { |
| 65 | fprintf(stderr(&__sF[2]), |
| 66 | "usage: yppush [-v] [-d domainname] [-h hostname] mapname\n"); |
| 67 | exit(1); |
| 68 | } |
| 69 | |
| 70 | static void |
| 71 | my_svc_run(void) |
| 72 | { |
| 73 | struct pollfd *pfd = NULL((void *)0), *newp; |
| 74 | int nready, saved_max_pollfd = 0; |
| 75 | |
| 76 | for (;;) { |
| 77 | if (svc_max_pollfd > saved_max_pollfd) { |
| 78 | newp = reallocarray(pfd, svc_max_pollfd, sizeof(*pfd)); |
| 79 | if (newp == NULL((void *)0)) { |
| 80 | free(pfd); |
| 81 | perror("svc_run: - realloc failed"); |
| 82 | return; |
| 83 | } |
| 84 | pfd = newp; |
| 85 | saved_max_pollfd = svc_max_pollfd; |
| 86 | } |
| 87 | memcpy(pfd, svc_pollfd, sizeof(*pfd) * svc_max_pollfd); |
| 88 | |
| 89 | nready = poll(pfd, svc_max_pollfd, 60 * 1000); |
| 90 | switch (nready) { |
| 91 | case -1: |
| 92 | if (errno(*__errno()) == EINTR4) |
| 93 | continue; |
| 94 | perror("yppush: my_svc_run: poll failed"); |
| 95 | free(pfd); |
| 96 | return; |
| 97 | case 0: |
| 98 | fprintf(stderr(&__sF[2]), "yppush: Callback timed out.\n"); |
| 99 | exit(0); |
| 100 | default: |
| 101 | svc_getreq_poll(pfd, nready); |
| 102 | break; |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | static void |
| 108 | req_xfr(pid_t pid, u_int prog, SVCXPRT *transp, char *host, CLIENT *client) |
| 109 | { |
| 110 | struct ypreq_xfr request; |
| 111 | struct timeval tv; |
| 112 | |
| 113 | tv.tv_sec = 0; |
| 114 | tv.tv_usec = 0; |
| 115 | |
| 116 | request.map_parms.domain=(char *)&Domain; |
| 117 | request.map_parms.map=(char *)⤅ |
| 118 | request.map_parms.peer=master; |
| 119 | request.map_parms.ordernum=OrderNum; |
| 120 | request.transid=(u_int)pid; |
| 121 | request.prog=prog; |
| 122 | request.port=transp->xp_port; |
| 123 | |
| 124 | if (Verbose) |
| 125 | printf("%d: %s(%u@%s) -> %s@%s\n", |
| 126 | request.transid, request.map_parms.map, |
| 127 | request.map_parms.ordernum, host, |
| 128 | request.map_parms.peer, request.map_parms.domain); |
| 129 | switch (clnt_call(client, YPPROC_XFR, xdr_ypreq_xfr, &request,((*(client)->cl_ops->cl_call)(client, ((u_long)6), xdr_ypreq_xfr , (caddr_t)&request, xdr_void, (caddr_t)((void *)0), tv)) |
| 130 | xdr_void, NULL, tv)((*(client)->cl_ops->cl_call)(client, ((u_long)6), xdr_ypreq_xfr , (caddr_t)&request, xdr_void, (caddr_t)((void *)0), tv))) { |
| 131 | case RPC_SUCCESS: |
| 132 | case RPC_TIMEDOUT: |
| 133 | break; |
| 134 | default: |
| 135 | clnt_perror(client, "yppush: Cannot call YPPROC_XFR"); |
| 136 | kill(pid, SIGTERM15); |
| 137 | break; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | static void |
| 142 | push(int inlen, char *indata) |
| 143 | { |
| 144 | char host[HOST_NAME_MAX255+1]; |
| 145 | CLIENT *client; |
| 146 | SVCXPRT *transp; |
| 147 | int sock = RPC_ANYSOCK-1, status; |
| 148 | u_int prog; |
| 149 | bool_tint32_t sts = 0; |
| 150 | pid_t pid; |
| 151 | struct rusage res; |
| 152 | |
| 153 | snprintf(host, sizeof host, "%*.*s", inlen, inlen, indata); |
| 154 | |
| 155 | client = clnt_create(host, YPPROG((u_long)100004), YPVERS((u_long)2), "tcp"); |
| 156 | if (client == NULL((void *)0)) { |
| 157 | if (Verbose) |
| 158 | fprintf(stderr(&__sF[2]), "Target Host: %s\n", host); |
| 159 | clnt_pcreateerror("yppush: Cannot create client"); |
| 160 | return; |
| 161 | } |
| 162 | |
| 163 | transp = svcudp_create(sock); |
| 164 | if (transp == NULL((void *)0)) { |
| 165 | fprintf(stderr(&__sF[2]), "yppush: Cannot create callback transport.\n"); |
| 166 | return; |
| 167 | } |
| 168 | if (transp->xp_port >= IPPORT_RESERVED1024) { |
| 169 | SVC_DESTROY(transp)(*(transp)->xp_ops->xp_destroy)(transp); |
| 170 | fprintf(stderr(&__sF[2]), "yppush: Cannot allocate reserved port.\n"); |
| 171 | return; |
| 172 | } |
| 173 | |
| 174 | for (prog=0x40000000; prog<0x5fffffff; prog++) { |
| 175 | if ((sts = svc_register(transp, prog, 1, |
| 176 | yppush_xfrrespprog_1, IPPROTO_UDP17))) |
| 177 | break; |
| 178 | } |
| 179 | |
| 180 | if (!sts) { |
| 181 | fprintf(stderr(&__sF[2]), "yppush: Cannot register callback.\n"); |
| 182 | return; |
| 183 | } |
| 184 | |
| 185 | switch (pid=fork()) { |
| 186 | case -1: |
| 187 | fprintf(stderr(&__sF[2]), "yppush: Cannot fork.\n"); |
| 188 | exit(1); |
| 189 | case 0: |
| 190 | my_svc_run(); |
| 191 | exit(0); |
| 192 | default: |
| 193 | close(transp->xp_sock); |
| 194 | transp->xp_sock = -1; |
| 195 | req_xfr(pid, prog, transp, host, client); |
| 196 | wait4(pid, &status, 0, &res); |
| 197 | svc_unregister(prog, 1); |
| 198 | if (client != NULL((void *)0)) |
| 199 | clnt_destroy(client)((*(client)->cl_ops->cl_destroy)(client)); |
| 200 | /* XXX transp leak? */ |
| 201 | } |
| 202 | |
| 203 | } |
| 204 | |
| 205 | static int |
| 206 | pushit(u_long instatus, char *inkey, int inkeylen, char *inval, int invallen, |
| 207 | void *indata) |
| 208 | { |
| 209 | if (instatus != YP_TRUE) |
| 210 | return instatus; |
| 211 | push(invallen, inval); |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | int |
| 216 | main(int argc, char *argv[]) |
| 217 | { |
| 218 | struct ypall_callback ypcb; |
| 219 | extern char *optarg; |
| 220 | extern int optind; |
| 221 | char *domain, *map, *hostname; |
| 222 | int c, r, i; |
| 223 | char *ypmap = "ypservers"; |
| 224 | CLIENT *client; |
| 225 | static char map_path[PATH_MAX1024]; |
| 226 | struct stat finfo; |
| 227 | DBM *yp_databas; |
| 228 | char order_key[YP_LAST_LEN(sizeof("YP_LAST_MODIFIED")-1)] = YP_LAST_KEY"YP_LAST_MODIFIED"; |
| 229 | datum o; |
| 230 | |
| 231 | yp_get_default_domain(&domain); |
| 232 | hostname = NULL((void *)0); |
| 233 | while ((c=getopt(argc, argv, "d:h:v")) != -1) |
| 234 | switch (c) { |
| 235 | case 'd': |
| 236 | domain = optarg; |
| 237 | break; |
| 238 | case 'h': |
| 239 | hostname = optarg; |
| 240 | break; |
| 241 | case 'v': |
| 242 | Verbose = 1; |
| 243 | break; |
| 244 | default: |
| 245 | usage(); |
| 246 | /*NOTREACHED*/ |
| 247 | } |
| 248 | |
| 249 | if (optind + 1 != argc ) |
| 250 | usage(); |
| 251 | |
| 252 | map = argv[optind]; |
| 253 | |
| 254 | strncpy(Domain, domain, sizeof(Domain)-1); |
| 255 | Domain[sizeof(Domain)-1] = '\0'; |
| 256 | strncpy(Map, map, sizeof(Map)-1); |
| 257 | Map[sizeof(Map)-1] = '\0'; |
| 258 | |
| 259 | /* Check domain */ |
| 260 | snprintf(map_path, sizeof map_path, "%s/%s", YP_DB_PATH"/var/yp", domain); |
| 261 | if (!((stat(map_path, &finfo) == 0) && S_ISDIR(finfo.st_mode)((finfo.st_mode & 0170000) == 0040000))) { |
| 262 | fprintf(stderr(&__sF[2]), "yppush: Map does not exist.\n"); |
| 263 | exit(1); |
| 264 | } |
| 265 | |
| 266 | /* Check map */ |
| 267 | snprintf(map_path, sizeof map_path, "%s/%s/%s%s", |
| 268 | YP_DB_PATH"/var/yp", domain, Map, YPDB_SUFFIX".db"); |
| 269 | if (!(stat(map_path, &finfo) == 0)) { |
| 270 | fprintf(stderr(&__sF[2]), "yppush: Map does not exist.\n"); |
| 271 | exit(1); |
| 272 | } |
| 273 | |
| 274 | snprintf(map_path, sizeof map_path, "%s/%s/%s", |
| 275 | YP_DB_PATH"/var/yp", domain, Map); |
| 276 | yp_databas = ypdb_open(map_path, 0, O_RDONLY0x0000); |
| 277 | OrderNum=0xffffffff; |
| 278 | if (yp_databas == 0) { |
| 279 | fprintf(stderr(&__sF[2]), "yppush: %s%s: Cannot open database\n", |
| 280 | map_path, YPDB_SUFFIX".db"); |
| 281 | } else { |
| 282 | o.dptr = (char *) &order_key; |
| 283 | o.dsize = YP_LAST_LEN(sizeof("YP_LAST_MODIFIED")-1); |
| 284 | o = ypdb_fetch(yp_databas, o); |
| 285 | if (o.dptr == NULL((void *)0)) { |
| 286 | fprintf(stderr(&__sF[2]), |
| 287 | "yppush: %s: Cannot determine order number\n", |
| 288 | Map); |
| 289 | } else { |
| 290 | OrderNum=0; |
| 291 | for (i=0; i<o.dsize-1; i++) { |
| 292 | if (!isdigit((unsigned char)o.dptr[i])) |
| 293 | OrderNum=0xffffffff; |
| 294 | } |
| 295 | if (OrderNum != 0) { |
| 296 | fprintf(stderr(&__sF[2]), |
| 297 | "yppush: %s: Invalid order number '%s'\n", |
| 298 | Map, o.dptr); |
| 299 | } else { |
| 300 | OrderNum = atoi(o.dptr); |
| 301 | } |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | yp_bind(Domain); |
| 306 | |
| 307 | r = yp_master(Domain, ypmap, &master); |
| 308 | if (r != 0) { |
| 309 | fprintf(stderr(&__sF[2]), "yppush: could not get ypservers map\n"); |
| 310 | exit(1); |
| 311 | } |
| 312 | |
| 313 | if (hostname != NULL((void *)0)) { |
| 314 | push(strlen(hostname), hostname); |
| 315 | } else { |
| 316 | if (Verbose) { |
| 317 | printf("Contacting master for ypservers (%s).\n", |
| 318 | master); |
| 319 | } |
| 320 | |
| 321 | client = yp_bind_host(master, YPPROG((u_long)100004), YPVERS((u_long)2), 0, 1); |
| 322 | |
| 323 | ypcb.foreach = pushit; |
| 324 | ypcb.data = NULL((void *)0); |
| 325 | r = yp_all_host(client, Domain, ypmap, &ypcb); |
Value stored to 'r' is never read | |
| 326 | } |
| 327 | |
| 328 | exit(0); |
| 329 | } |