sp_common.c revision 1.7 1 1.7 pooka /* $NetBSD: sp_common.c,v 1.7 2010/11/24 14:32:42 pooka Exp $ */
2 1.1 pooka
3 1.1 pooka /*
4 1.1 pooka * Copyright (c) 2010 Antti Kantee. All Rights Reserved.
5 1.1 pooka *
6 1.1 pooka * Redistribution and use in source and binary forms, with or without
7 1.1 pooka * modification, are permitted provided that the following conditions
8 1.1 pooka * are met:
9 1.1 pooka * 1. Redistributions of source code must retain the above copyright
10 1.1 pooka * notice, this list of conditions and the following disclaimer.
11 1.1 pooka * 2. Redistributions in binary form must reproduce the above copyright
12 1.1 pooka * notice, this list of conditions and the following disclaimer in the
13 1.1 pooka * documentation and/or other materials provided with the distribution.
14 1.1 pooka *
15 1.1 pooka * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 1.1 pooka * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 1.1 pooka * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 1.1 pooka * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 1.1 pooka * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 1.1 pooka * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 1.1 pooka * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 1.1 pooka * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 1.1 pooka * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 1.1 pooka * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 1.1 pooka * SUCH DAMAGE.
26 1.1 pooka */
27 1.1 pooka
28 1.1 pooka /*
29 1.1 pooka * Common client/server sysproxy routines. #included.
30 1.1 pooka */
31 1.1 pooka
32 1.1 pooka #include <sys/cdefs.h>
33 1.1 pooka
34 1.1 pooka #include <sys/types.h>
35 1.1 pooka #include <sys/mman.h>
36 1.4 pooka #include <sys/queue.h>
37 1.1 pooka #include <sys/socket.h>
38 1.2 pooka #include <sys/un.h>
39 1.1 pooka
40 1.1 pooka #include <arpa/inet.h>
41 1.1 pooka #include <netinet/in.h>
42 1.1 pooka #include <netinet/tcp.h>
43 1.1 pooka
44 1.1 pooka #include <assert.h>
45 1.1 pooka #include <errno.h>
46 1.1 pooka #include <fcntl.h>
47 1.1 pooka #include <poll.h>
48 1.4 pooka #include <pthread.h>
49 1.1 pooka #include <stdarg.h>
50 1.1 pooka #include <stdio.h>
51 1.1 pooka #include <stdlib.h>
52 1.1 pooka #include <string.h>
53 1.1 pooka #include <unistd.h>
54 1.1 pooka
55 1.1 pooka //#define DEBUG
56 1.1 pooka #ifdef DEBUG
57 1.1 pooka #define DPRINTF(x) mydprintf x
58 1.1 pooka static void
59 1.1 pooka mydprintf(const char *fmt, ...)
60 1.1 pooka {
61 1.1 pooka va_list ap;
62 1.1 pooka
63 1.1 pooka va_start(ap, fmt);
64 1.1 pooka vfprintf(stderr, fmt, ap);
65 1.1 pooka va_end(ap);
66 1.1 pooka }
67 1.1 pooka #else
68 1.1 pooka #define DPRINTF(x)
69 1.1 pooka #endif
70 1.1 pooka
71 1.1 pooka /*
72 1.1 pooka * Bah, I hate writing on-off-wire conversions in C
73 1.1 pooka */
74 1.1 pooka
75 1.4 pooka enum { RUMPSP_REQ, RUMPSP_RESP };
76 1.4 pooka enum { RUMPSP_SYSCALL, RUMPSP_COPYIN, RUMPSP_COPYOUT, RUMPSP_ANONMMAP };
77 1.1 pooka
78 1.1 pooka struct rsp_hdr {
79 1.1 pooka uint64_t rsp_len;
80 1.1 pooka uint64_t rsp_reqno;
81 1.4 pooka uint16_t rsp_class;
82 1.4 pooka uint16_t rsp_type;
83 1.1 pooka /*
84 1.1 pooka * We want this structure 64bit-aligned for typecast fun,
85 1.1 pooka * so might as well use the following for something.
86 1.1 pooka */
87 1.1 pooka uint32_t rsp_sysnum;
88 1.1 pooka };
89 1.1 pooka #define HDRSZ sizeof(struct rsp_hdr)
90 1.1 pooka
91 1.1 pooka /*
92 1.1 pooka * Data follows the header. We have two types of structured data.
93 1.1 pooka */
94 1.1 pooka
95 1.1 pooka /* copyin/copyout */
96 1.1 pooka struct rsp_copydata {
97 1.1 pooka size_t rcp_len;
98 1.1 pooka void *rcp_addr;
99 1.1 pooka uint8_t rcp_data[0];
100 1.1 pooka };
101 1.1 pooka
102 1.1 pooka /* syscall response */
103 1.1 pooka struct rsp_sysresp {
104 1.1 pooka int rsys_error;
105 1.1 pooka register_t rsys_retval[2];
106 1.1 pooka };
107 1.1 pooka
108 1.4 pooka struct respwait {
109 1.4 pooka uint64_t rw_reqno;
110 1.4 pooka void *rw_data;
111 1.4 pooka size_t rw_dlen;
112 1.4 pooka
113 1.4 pooka pthread_cond_t rw_cv;
114 1.4 pooka
115 1.4 pooka TAILQ_ENTRY(respwait) rw_entries;
116 1.4 pooka };
117 1.1 pooka
118 1.1 pooka struct spclient {
119 1.1 pooka int spc_fd;
120 1.7 pooka int spc_refcnt;
121 1.7 pooka int spc_dying;
122 1.6 pooka
123 1.6 pooka struct lwp *spc_mainlwp;
124 1.6 pooka pid_t spc_pid;
125 1.1 pooka
126 1.7 pooka struct pollfd *spc_pfd;
127 1.7 pooka
128 1.1 pooka struct rsp_hdr spc_hdr;
129 1.1 pooka uint8_t *spc_buf;
130 1.1 pooka size_t spc_off;
131 1.1 pooka
132 1.4 pooka pthread_mutex_t spc_mtx;
133 1.1 pooka pthread_cond_t spc_cv;
134 1.4 pooka
135 1.4 pooka uint64_t spc_nextreq;
136 1.4 pooka int spc_ostatus, spc_istatus;
137 1.4 pooka
138 1.4 pooka TAILQ_HEAD(, respwait) spc_respwait;
139 1.1 pooka };
140 1.4 pooka #define SPCSTATUS_FREE 0
141 1.4 pooka #define SPCSTATUS_BUSY 1
142 1.4 pooka #define SPCSTATUS_WANTED 2
143 1.1 pooka
144 1.1 pooka typedef int (*addrparse_fn)(const char *, struct sockaddr **, int);
145 1.1 pooka typedef int (*connecthook_fn)(int);
146 1.1 pooka
147 1.4 pooka static int readframe(struct spclient *);
148 1.4 pooka static void handlereq(struct spclient *);
149 1.4 pooka
150 1.4 pooka static void
151 1.4 pooka sendlock(struct spclient *spc)
152 1.4 pooka {
153 1.4 pooka
154 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
155 1.4 pooka while (spc->spc_ostatus != SPCSTATUS_FREE) {
156 1.4 pooka spc->spc_ostatus = SPCSTATUS_WANTED;
157 1.4 pooka pthread_cond_wait(&spc->spc_cv, &spc->spc_mtx);
158 1.4 pooka }
159 1.4 pooka spc->spc_ostatus = SPCSTATUS_BUSY;
160 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
161 1.4 pooka }
162 1.4 pooka
163 1.4 pooka static void
164 1.4 pooka sendunlock(struct spclient *spc)
165 1.4 pooka {
166 1.4 pooka
167 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
168 1.4 pooka if (spc->spc_ostatus == SPCSTATUS_WANTED)
169 1.4 pooka pthread_cond_broadcast(&spc->spc_cv);
170 1.4 pooka spc->spc_ostatus = SPCSTATUS_FREE;
171 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
172 1.4 pooka }
173 1.1 pooka
174 1.1 pooka static int
175 1.1 pooka dosend(struct spclient *spc, const void *data, size_t dlen)
176 1.1 pooka {
177 1.1 pooka struct pollfd pfd;
178 1.1 pooka const uint8_t *sdata = data;
179 1.1 pooka ssize_t n;
180 1.1 pooka size_t sent;
181 1.1 pooka int fd = spc->spc_fd;
182 1.1 pooka
183 1.1 pooka pfd.fd = fd;
184 1.1 pooka pfd.events = POLLOUT;
185 1.1 pooka
186 1.1 pooka for (sent = 0, n = 0; sent < dlen; ) {
187 1.1 pooka if (n) {
188 1.1 pooka if (poll(&pfd, 1, INFTIM) == -1) {
189 1.1 pooka if (errno == EINTR)
190 1.1 pooka continue;
191 1.1 pooka return errno;
192 1.1 pooka }
193 1.1 pooka }
194 1.1 pooka
195 1.3 pooka n = send(fd, sdata + sent, dlen - sent, MSG_NOSIGNAL);
196 1.1 pooka if (n == 0) {
197 1.1 pooka return EFAULT;
198 1.1 pooka }
199 1.1 pooka if (n == -1 && errno != EAGAIN) {
200 1.1 pooka return EFAULT;
201 1.1 pooka }
202 1.1 pooka sent += n;
203 1.1 pooka }
204 1.1 pooka
205 1.1 pooka return 0;
206 1.1 pooka }
207 1.1 pooka
208 1.4 pooka static void
209 1.4 pooka putwait(struct spclient *spc, struct respwait *rw, struct rsp_hdr *rhdr)
210 1.4 pooka {
211 1.4 pooka
212 1.4 pooka rw->rw_data = NULL;
213 1.4 pooka rw->rw_dlen = 0;
214 1.4 pooka pthread_cond_init(&rw->rw_cv, NULL);
215 1.4 pooka
216 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
217 1.4 pooka rw->rw_reqno = rhdr->rsp_reqno = spc->spc_nextreq++;
218 1.4 pooka TAILQ_INSERT_TAIL(&spc->spc_respwait, rw, rw_entries);
219 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
220 1.4 pooka }
221 1.4 pooka
222 1.4 pooka static void
223 1.4 pooka kickwaiter(struct spclient *spc)
224 1.4 pooka {
225 1.4 pooka struct respwait *rw;
226 1.4 pooka
227 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
228 1.4 pooka TAILQ_FOREACH(rw, &spc->spc_respwait, rw_entries) {
229 1.4 pooka if (rw->rw_reqno == spc->spc_hdr.rsp_reqno)
230 1.4 pooka break;
231 1.4 pooka }
232 1.4 pooka if (rw == NULL) {
233 1.4 pooka printf("PANIC: no waiter\n");
234 1.6 pooka abort();
235 1.4 pooka return;
236 1.4 pooka }
237 1.4 pooka rw->rw_data = spc->spc_buf;
238 1.4 pooka pthread_cond_signal(&rw->rw_cv);
239 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
240 1.4 pooka
241 1.4 pooka spc->spc_buf = NULL;
242 1.4 pooka spc->spc_off = 0;
243 1.4 pooka }
244 1.4 pooka
245 1.4 pooka static void
246 1.4 pooka kickall(struct spclient *spc)
247 1.4 pooka {
248 1.4 pooka struct respwait *rw;
249 1.4 pooka
250 1.4 pooka /* DIAGASSERT(mutex_owned(spc_lock)) */
251 1.4 pooka TAILQ_FOREACH(rw, &spc->spc_respwait, rw_entries)
252 1.4 pooka pthread_cond_signal(&rw->rw_cv);
253 1.4 pooka }
254 1.4 pooka
255 1.4 pooka static int
256 1.4 pooka waitresp(struct spclient *spc, struct respwait *rw)
257 1.4 pooka {
258 1.4 pooka struct pollfd pfd;
259 1.4 pooka int rv = 0;
260 1.4 pooka
261 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
262 1.7 pooka while (rw->rw_data == NULL && spc->spc_dying == 0) {
263 1.4 pooka /* are we free to receive? */
264 1.4 pooka if (spc->spc_istatus == SPCSTATUS_FREE) {
265 1.4 pooka int gotresp;
266 1.4 pooka
267 1.4 pooka spc->spc_istatus = SPCSTATUS_BUSY;
268 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
269 1.4 pooka
270 1.4 pooka pfd.fd = spc->spc_fd;
271 1.4 pooka pfd.events = POLLIN;
272 1.4 pooka
273 1.4 pooka for (gotresp = 0; !gotresp; ) {
274 1.4 pooka while (readframe(spc) < 1)
275 1.4 pooka poll(&pfd, 1, INFTIM);
276 1.4 pooka
277 1.4 pooka switch (spc->spc_hdr.rsp_class) {
278 1.4 pooka case RUMPSP_RESP:
279 1.4 pooka kickwaiter(spc);
280 1.4 pooka gotresp = spc->spc_hdr.rsp_reqno ==
281 1.4 pooka rw->rw_reqno;
282 1.4 pooka break;
283 1.4 pooka case RUMPSP_REQ:
284 1.4 pooka handlereq(spc);
285 1.4 pooka break;
286 1.4 pooka default:
287 1.4 pooka /* panic */
288 1.4 pooka break;
289 1.4 pooka }
290 1.4 pooka }
291 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
292 1.4 pooka if (spc->spc_istatus == SPCSTATUS_WANTED)
293 1.4 pooka kickall(spc);
294 1.4 pooka spc->spc_istatus = SPCSTATUS_FREE;
295 1.4 pooka } else {
296 1.4 pooka spc->spc_istatus = SPCSTATUS_WANTED;
297 1.4 pooka pthread_cond_wait(&rw->rw_cv, &spc->spc_mtx);
298 1.4 pooka }
299 1.4 pooka }
300 1.4 pooka
301 1.4 pooka TAILQ_REMOVE(&spc->spc_respwait, rw, rw_entries);
302 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
303 1.4 pooka
304 1.4 pooka pthread_cond_destroy(&rw->rw_cv);
305 1.4 pooka return rv;
306 1.4 pooka }
307 1.4 pooka
308 1.1 pooka static int
309 1.1 pooka readframe(struct spclient *spc)
310 1.1 pooka {
311 1.1 pooka int fd = spc->spc_fd;
312 1.1 pooka size_t left;
313 1.1 pooka size_t framelen;
314 1.1 pooka ssize_t n;
315 1.1 pooka
316 1.1 pooka /* still reading header? */
317 1.1 pooka if (spc->spc_off < HDRSZ) {
318 1.1 pooka DPRINTF(("rump_sp: readframe getting header at offset %zu\n",
319 1.1 pooka spc->spc_off));
320 1.1 pooka
321 1.1 pooka left = HDRSZ - spc->spc_off;
322 1.1 pooka /*LINTED: cast ok */
323 1.1 pooka n = read(fd, (uint8_t *)&spc->spc_hdr + spc->spc_off, left);
324 1.1 pooka if (n == 0) {
325 1.1 pooka return -1;
326 1.1 pooka }
327 1.1 pooka if (n == -1) {
328 1.1 pooka if (errno == EAGAIN)
329 1.1 pooka return 0;
330 1.1 pooka return -1;
331 1.1 pooka }
332 1.1 pooka
333 1.1 pooka spc->spc_off += n;
334 1.1 pooka if (spc->spc_off < HDRSZ)
335 1.1 pooka return -1;
336 1.1 pooka
337 1.1 pooka /*LINTED*/
338 1.1 pooka framelen = spc->spc_hdr.rsp_len;
339 1.1 pooka
340 1.1 pooka if (framelen < HDRSZ) {
341 1.1 pooka return -1;
342 1.1 pooka } else if (framelen == HDRSZ) {
343 1.1 pooka return 1;
344 1.1 pooka }
345 1.1 pooka
346 1.1 pooka spc->spc_buf = malloc(framelen - HDRSZ);
347 1.1 pooka if (spc->spc_buf == NULL) {
348 1.1 pooka return -1;
349 1.1 pooka }
350 1.1 pooka memset(spc->spc_buf, 0, framelen - HDRSZ);
351 1.1 pooka
352 1.1 pooka /* "fallthrough" */
353 1.1 pooka } else {
354 1.1 pooka /*LINTED*/
355 1.1 pooka framelen = spc->spc_hdr.rsp_len;
356 1.1 pooka }
357 1.1 pooka
358 1.1 pooka left = framelen - spc->spc_off;
359 1.1 pooka
360 1.1 pooka DPRINTF(("rump_sp: readframe getting body at offset %zu, left %zu\n",
361 1.1 pooka spc->spc_off, left));
362 1.1 pooka
363 1.1 pooka if (left == 0)
364 1.1 pooka return 1;
365 1.1 pooka n = read(fd, spc->spc_buf + (spc->spc_off - HDRSZ), left);
366 1.1 pooka if (n == 0) {
367 1.1 pooka return -1;
368 1.1 pooka }
369 1.1 pooka if (n == -1) {
370 1.1 pooka if (errno == EAGAIN)
371 1.1 pooka return 0;
372 1.1 pooka return -1;
373 1.1 pooka }
374 1.1 pooka spc->spc_off += n;
375 1.1 pooka left -= n;
376 1.1 pooka
377 1.1 pooka /* got everything? */
378 1.1 pooka if (left == 0)
379 1.1 pooka return 1;
380 1.1 pooka else
381 1.1 pooka return 0;
382 1.1 pooka }
383 1.1 pooka
384 1.1 pooka static int
385 1.1 pooka tcp_parse(const char *addr, struct sockaddr **sa, int allow_wildcard)
386 1.1 pooka {
387 1.1 pooka struct sockaddr_in sin;
388 1.1 pooka char buf[64];
389 1.1 pooka const char *p;
390 1.1 pooka size_t l;
391 1.1 pooka int port;
392 1.1 pooka
393 1.1 pooka memset(&sin, 0, sizeof(sin));
394 1.1 pooka sin.sin_len = sizeof(sin);
395 1.1 pooka sin.sin_family = AF_INET;
396 1.1 pooka
397 1.1 pooka p = strchr(addr, ':');
398 1.1 pooka if (!p) {
399 1.1 pooka fprintf(stderr, "rump_sp_tcp: missing port specifier\n");
400 1.1 pooka return EINVAL;
401 1.1 pooka }
402 1.1 pooka
403 1.1 pooka l = p - addr;
404 1.1 pooka if (l > sizeof(buf)-1) {
405 1.1 pooka fprintf(stderr, "rump_sp_tcp: address too long\n");
406 1.1 pooka return EINVAL;
407 1.1 pooka }
408 1.1 pooka strncpy(buf, addr, l);
409 1.1 pooka buf[l] = '\0';
410 1.1 pooka
411 1.1 pooka /* special INADDR_ANY treatment */
412 1.1 pooka if (strcmp(buf, "*") == 0 || strcmp(buf, "0") == 0) {
413 1.1 pooka sin.sin_addr.s_addr = INADDR_ANY;
414 1.1 pooka } else {
415 1.1 pooka switch (inet_pton(AF_INET, buf, &sin.sin_addr)) {
416 1.1 pooka case 1:
417 1.1 pooka break;
418 1.1 pooka case 0:
419 1.1 pooka fprintf(stderr, "rump_sp_tcp: cannot parse %s\n", buf);
420 1.1 pooka return EINVAL;
421 1.1 pooka case -1:
422 1.1 pooka fprintf(stderr, "rump_sp_tcp: inet_pton failed\n");
423 1.1 pooka return errno;
424 1.1 pooka default:
425 1.1 pooka assert(/*CONSTCOND*/0);
426 1.1 pooka return EINVAL;
427 1.1 pooka }
428 1.1 pooka }
429 1.1 pooka
430 1.1 pooka if (!allow_wildcard && sin.sin_addr.s_addr == INADDR_ANY) {
431 1.1 pooka fprintf(stderr, "rump_sp_tcp: client needs !INADDR_ANY\n");
432 1.1 pooka return EINVAL;
433 1.1 pooka }
434 1.1 pooka
435 1.1 pooka /* advance to port number & parse */
436 1.1 pooka p++;
437 1.1 pooka l = strspn(p, "0123456789");
438 1.1 pooka if (l == 0) {
439 1.1 pooka fprintf(stderr, "rump_sp_tcp: port now found: %s\n", p);
440 1.1 pooka return EINVAL;
441 1.1 pooka }
442 1.1 pooka strncpy(buf, p, l);
443 1.1 pooka buf[l] = '\0';
444 1.1 pooka
445 1.1 pooka if (*(p+l) != '/' && *(p+l) != '\0') {
446 1.1 pooka fprintf(stderr, "rump_sp_tcp: junk at end of port: %s\n", addr);
447 1.1 pooka return EINVAL;
448 1.1 pooka }
449 1.1 pooka
450 1.1 pooka port = atoi(buf);
451 1.1 pooka if (port < 0 || port >= (1<<(8*sizeof(in_port_t)))) {
452 1.1 pooka fprintf(stderr, "rump_sp_tcp: port %d out of range\n", port);
453 1.1 pooka return ERANGE;
454 1.1 pooka }
455 1.1 pooka sin.sin_port = htons(port);
456 1.1 pooka
457 1.1 pooka *sa = malloc(sizeof(sin));
458 1.1 pooka if (*sa == NULL)
459 1.1 pooka return errno;
460 1.1 pooka memcpy(*sa, &sin, sizeof(sin));
461 1.1 pooka return 0;
462 1.1 pooka }
463 1.1 pooka
464 1.1 pooka static int
465 1.1 pooka tcp_connecthook(int s)
466 1.1 pooka {
467 1.1 pooka int x;
468 1.1 pooka
469 1.1 pooka x = 1;
470 1.1 pooka setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &x, sizeof(x));
471 1.1 pooka
472 1.1 pooka return 0;
473 1.1 pooka }
474 1.1 pooka
475 1.5 pooka /*ARGSUSED*/
476 1.2 pooka static int
477 1.2 pooka unix_parse(const char *addr, struct sockaddr **sa, int allow_wildcard)
478 1.2 pooka {
479 1.2 pooka struct sockaddr_un sun;
480 1.5 pooka size_t slen;
481 1.2 pooka
482 1.2 pooka if (strlen(addr) > sizeof(sun.sun_path))
483 1.2 pooka return ENAMETOOLONG;
484 1.2 pooka
485 1.2 pooka /*
486 1.2 pooka * The pathname can be all kinds of spaghetti elementals,
487 1.2 pooka * so meek and obidient we accept everything.
488 1.2 pooka */
489 1.2 pooka memset(&sun, 0, sizeof(sun));
490 1.2 pooka sun.sun_family = AF_LOCAL;
491 1.2 pooka strlcpy(sun.sun_path, addr, sizeof(sun.sun_path));
492 1.5 pooka sun.sun_len = slen = SUN_LEN(&sun);
493 1.2 pooka
494 1.5 pooka *sa = malloc(slen);
495 1.2 pooka if (*sa == NULL)
496 1.2 pooka return errno;
497 1.5 pooka memcpy(*sa, &sun, slen);
498 1.2 pooka
499 1.2 pooka return 0;
500 1.2 pooka }
501 1.2 pooka
502 1.1 pooka /*ARGSUSED*/
503 1.1 pooka static int
504 1.1 pooka notsupp(void)
505 1.1 pooka {
506 1.1 pooka
507 1.1 pooka fprintf(stderr, "rump_sp: support not yet implemented\n");
508 1.1 pooka return EOPNOTSUPP;
509 1.1 pooka }
510 1.1 pooka
511 1.1 pooka static int
512 1.1 pooka success(void)
513 1.1 pooka {
514 1.1 pooka
515 1.1 pooka return 0;
516 1.1 pooka }
517 1.1 pooka
518 1.1 pooka struct {
519 1.1 pooka const char *id;
520 1.1 pooka int domain;
521 1.1 pooka addrparse_fn ap;
522 1.1 pooka connecthook_fn connhook;
523 1.1 pooka } parsetab[] = {
524 1.1 pooka { "tcp", PF_INET, tcp_parse, tcp_connecthook },
525 1.2 pooka { "unix", PF_LOCAL, unix_parse, (connecthook_fn)success },
526 1.1 pooka { "tcp6", PF_INET6, (addrparse_fn)notsupp, (connecthook_fn)success },
527 1.1 pooka };
528 1.1 pooka #define NPARSE (sizeof(parsetab)/sizeof(parsetab[0]))
529 1.1 pooka
530 1.1 pooka static int
531 1.1 pooka parseurl(const char *url, struct sockaddr **sap, unsigned *idxp,
532 1.1 pooka int allow_wildcard)
533 1.1 pooka {
534 1.1 pooka char id[16];
535 1.1 pooka const char *p, *p2;
536 1.1 pooka size_t l;
537 1.1 pooka unsigned i;
538 1.1 pooka int error;
539 1.1 pooka
540 1.1 pooka /*
541 1.1 pooka * Parse the url
542 1.1 pooka */
543 1.1 pooka
544 1.1 pooka p = url;
545 1.1 pooka p2 = strstr(p, "://");
546 1.1 pooka if (!p2) {
547 1.1 pooka fprintf(stderr, "rump_sp: invalid locator ``%s''\n", p);
548 1.1 pooka return EINVAL;
549 1.1 pooka }
550 1.1 pooka l = p2-p;
551 1.1 pooka if (l > sizeof(id)-1) {
552 1.1 pooka fprintf(stderr, "rump_sp: identifier too long in ``%s''\n", p);
553 1.1 pooka return EINVAL;
554 1.1 pooka }
555 1.1 pooka
556 1.1 pooka strncpy(id, p, l);
557 1.1 pooka id[l] = '\0';
558 1.1 pooka p2 += 3; /* beginning of address */
559 1.1 pooka
560 1.1 pooka for (i = 0; i < NPARSE; i++) {
561 1.1 pooka if (strcmp(id, parsetab[i].id) == 0) {
562 1.1 pooka error = parsetab[i].ap(p2, sap, allow_wildcard);
563 1.1 pooka if (error)
564 1.1 pooka return error;
565 1.1 pooka break;
566 1.1 pooka }
567 1.1 pooka }
568 1.1 pooka if (i == NPARSE) {
569 1.1 pooka fprintf(stderr, "rump_sp: invalid identifier ``%s''\n", p);
570 1.1 pooka return EINVAL;
571 1.1 pooka }
572 1.1 pooka
573 1.1 pooka *idxp = i;
574 1.1 pooka return 0;
575 1.1 pooka }
576