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 | } |