sp_common.c revision 1.5 1 1.5 pooka /* $NetBSD: sp_common.c,v 1.5 2010/11/19 15:40:55 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 1.1 pooka struct lwp *spc_lwp;
121 1.1 pooka
122 1.1 pooka /* incoming */
123 1.1 pooka struct rsp_hdr spc_hdr;
124 1.1 pooka uint8_t *spc_buf;
125 1.1 pooka size_t spc_off;
126 1.1 pooka
127 1.4 pooka pthread_mutex_t spc_mtx;
128 1.1 pooka pthread_cond_t spc_cv;
129 1.4 pooka
130 1.4 pooka uint64_t spc_nextreq;
131 1.4 pooka int spc_ostatus, spc_istatus;
132 1.4 pooka
133 1.4 pooka TAILQ_HEAD(, respwait) spc_respwait;
134 1.1 pooka };
135 1.4 pooka #define SPCSTATUS_FREE 0
136 1.4 pooka #define SPCSTATUS_BUSY 1
137 1.4 pooka #define SPCSTATUS_WANTED 2
138 1.1 pooka
139 1.1 pooka typedef int (*addrparse_fn)(const char *, struct sockaddr **, int);
140 1.1 pooka typedef int (*connecthook_fn)(int);
141 1.1 pooka
142 1.4 pooka static int readframe(struct spclient *);
143 1.4 pooka static void handlereq(struct spclient *);
144 1.4 pooka
145 1.4 pooka static void
146 1.4 pooka sendlock(struct spclient *spc)
147 1.4 pooka {
148 1.4 pooka
149 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
150 1.4 pooka while (spc->spc_ostatus != SPCSTATUS_FREE) {
151 1.4 pooka spc->spc_ostatus = SPCSTATUS_WANTED;
152 1.4 pooka pthread_cond_wait(&spc->spc_cv, &spc->spc_mtx);
153 1.4 pooka }
154 1.4 pooka spc->spc_ostatus = SPCSTATUS_BUSY;
155 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
156 1.4 pooka }
157 1.4 pooka
158 1.4 pooka static void
159 1.4 pooka sendunlock(struct spclient *spc)
160 1.4 pooka {
161 1.4 pooka
162 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
163 1.4 pooka if (spc->spc_ostatus == SPCSTATUS_WANTED)
164 1.4 pooka pthread_cond_broadcast(&spc->spc_cv);
165 1.4 pooka spc->spc_ostatus = SPCSTATUS_FREE;
166 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
167 1.4 pooka }
168 1.1 pooka
169 1.1 pooka static int
170 1.1 pooka dosend(struct spclient *spc, const void *data, size_t dlen)
171 1.1 pooka {
172 1.1 pooka struct pollfd pfd;
173 1.1 pooka const uint8_t *sdata = data;
174 1.1 pooka ssize_t n;
175 1.1 pooka size_t sent;
176 1.1 pooka int fd = spc->spc_fd;
177 1.1 pooka
178 1.1 pooka pfd.fd = fd;
179 1.1 pooka pfd.events = POLLOUT;
180 1.1 pooka
181 1.1 pooka for (sent = 0, n = 0; sent < dlen; ) {
182 1.1 pooka if (n) {
183 1.1 pooka if (poll(&pfd, 1, INFTIM) == -1) {
184 1.1 pooka if (errno == EINTR)
185 1.1 pooka continue;
186 1.1 pooka return errno;
187 1.1 pooka }
188 1.1 pooka }
189 1.1 pooka
190 1.3 pooka n = send(fd, sdata + sent, dlen - sent, MSG_NOSIGNAL);
191 1.1 pooka if (n == 0) {
192 1.1 pooka return EFAULT;
193 1.1 pooka }
194 1.1 pooka if (n == -1 && errno != EAGAIN) {
195 1.1 pooka return EFAULT;
196 1.1 pooka }
197 1.1 pooka sent += n;
198 1.1 pooka }
199 1.1 pooka
200 1.1 pooka return 0;
201 1.1 pooka }
202 1.1 pooka
203 1.4 pooka static void
204 1.4 pooka putwait(struct spclient *spc, struct respwait *rw, struct rsp_hdr *rhdr)
205 1.4 pooka {
206 1.4 pooka
207 1.4 pooka rw->rw_data = NULL;
208 1.4 pooka rw->rw_dlen = 0;
209 1.4 pooka pthread_cond_init(&rw->rw_cv, NULL);
210 1.4 pooka
211 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
212 1.4 pooka rw->rw_reqno = rhdr->rsp_reqno = spc->spc_nextreq++;
213 1.4 pooka TAILQ_INSERT_TAIL(&spc->spc_respwait, rw, rw_entries);
214 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
215 1.4 pooka }
216 1.4 pooka
217 1.4 pooka static void
218 1.4 pooka kickwaiter(struct spclient *spc)
219 1.4 pooka {
220 1.4 pooka struct respwait *rw;
221 1.4 pooka
222 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
223 1.4 pooka TAILQ_FOREACH(rw, &spc->spc_respwait, rw_entries) {
224 1.4 pooka if (rw->rw_reqno == spc->spc_hdr.rsp_reqno)
225 1.4 pooka break;
226 1.4 pooka }
227 1.4 pooka if (rw == NULL) {
228 1.4 pooka printf("PANIC: no waiter\n");
229 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
230 1.4 pooka return;
231 1.4 pooka }
232 1.4 pooka rw->rw_data = spc->spc_buf;
233 1.4 pooka TAILQ_REMOVE(&spc->spc_respwait, rw, rw_entries);
234 1.4 pooka pthread_cond_signal(&rw->rw_cv);
235 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
236 1.4 pooka
237 1.4 pooka spc->spc_buf = NULL;
238 1.4 pooka spc->spc_off = 0;
239 1.4 pooka }
240 1.4 pooka
241 1.4 pooka static void
242 1.4 pooka kickall(struct spclient *spc)
243 1.4 pooka {
244 1.4 pooka struct respwait *rw;
245 1.4 pooka
246 1.4 pooka /* DIAGASSERT(mutex_owned(spc_lock)) */
247 1.4 pooka TAILQ_FOREACH(rw, &spc->spc_respwait, rw_entries)
248 1.4 pooka pthread_cond_signal(&rw->rw_cv);
249 1.4 pooka }
250 1.4 pooka
251 1.4 pooka static int
252 1.4 pooka waitresp(struct spclient *spc, struct respwait *rw)
253 1.4 pooka {
254 1.4 pooka struct pollfd pfd;
255 1.4 pooka int rv = 0;
256 1.4 pooka
257 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
258 1.4 pooka while (rw->rw_data == NULL) {
259 1.4 pooka /* are we free to receive? */
260 1.4 pooka if (spc->spc_istatus == SPCSTATUS_FREE) {
261 1.4 pooka int gotresp;
262 1.4 pooka
263 1.4 pooka spc->spc_istatus = SPCSTATUS_BUSY;
264 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
265 1.4 pooka
266 1.4 pooka pfd.fd = spc->spc_fd;
267 1.4 pooka pfd.events = POLLIN;
268 1.4 pooka
269 1.4 pooka for (gotresp = 0; !gotresp; ) {
270 1.4 pooka while (readframe(spc) < 1)
271 1.4 pooka poll(&pfd, 1, INFTIM);
272 1.4 pooka
273 1.4 pooka switch (spc->spc_hdr.rsp_class) {
274 1.4 pooka case RUMPSP_RESP:
275 1.4 pooka kickwaiter(spc);
276 1.4 pooka gotresp = spc->spc_hdr.rsp_reqno ==
277 1.4 pooka rw->rw_reqno;
278 1.4 pooka break;
279 1.4 pooka case RUMPSP_REQ:
280 1.4 pooka handlereq(spc);
281 1.4 pooka break;
282 1.4 pooka default:
283 1.4 pooka /* panic */
284 1.4 pooka break;
285 1.4 pooka }
286 1.4 pooka }
287 1.4 pooka pthread_mutex_lock(&spc->spc_mtx);
288 1.4 pooka if (spc->spc_istatus == SPCSTATUS_WANTED)
289 1.4 pooka kickall(spc);
290 1.4 pooka spc->spc_istatus = SPCSTATUS_FREE;
291 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
292 1.4 pooka } else {
293 1.4 pooka spc->spc_istatus = SPCSTATUS_WANTED;
294 1.4 pooka pthread_cond_wait(&rw->rw_cv, &spc->spc_mtx);
295 1.4 pooka }
296 1.4 pooka }
297 1.4 pooka
298 1.4 pooka TAILQ_REMOVE(&spc->spc_respwait, rw, rw_entries);
299 1.4 pooka pthread_mutex_unlock(&spc->spc_mtx);
300 1.4 pooka
301 1.4 pooka pthread_cond_destroy(&rw->rw_cv);
302 1.4 pooka return rv;
303 1.4 pooka }
304 1.4 pooka
305 1.1 pooka static int
306 1.1 pooka readframe(struct spclient *spc)
307 1.1 pooka {
308 1.1 pooka int fd = spc->spc_fd;
309 1.1 pooka size_t left;
310 1.1 pooka size_t framelen;
311 1.1 pooka ssize_t n;
312 1.1 pooka
313 1.1 pooka /* still reading header? */
314 1.1 pooka if (spc->spc_off < HDRSZ) {
315 1.1 pooka DPRINTF(("rump_sp: readframe getting header at offset %zu\n",
316 1.1 pooka spc->spc_off));
317 1.1 pooka
318 1.1 pooka left = HDRSZ - spc->spc_off;
319 1.1 pooka /*LINTED: cast ok */
320 1.1 pooka n = read(fd, (uint8_t *)&spc->spc_hdr + spc->spc_off, left);
321 1.1 pooka if (n == 0) {
322 1.1 pooka return -1;
323 1.1 pooka }
324 1.1 pooka if (n == -1) {
325 1.1 pooka if (errno == EAGAIN)
326 1.1 pooka return 0;
327 1.1 pooka return -1;
328 1.1 pooka }
329 1.1 pooka
330 1.1 pooka spc->spc_off += n;
331 1.1 pooka if (spc->spc_off < HDRSZ)
332 1.1 pooka return -1;
333 1.1 pooka
334 1.1 pooka /*LINTED*/
335 1.1 pooka framelen = spc->spc_hdr.rsp_len;
336 1.1 pooka
337 1.1 pooka if (framelen < HDRSZ) {
338 1.1 pooka return -1;
339 1.1 pooka } else if (framelen == HDRSZ) {
340 1.1 pooka return 1;
341 1.1 pooka }
342 1.1 pooka
343 1.1 pooka spc->spc_buf = malloc(framelen - HDRSZ);
344 1.1 pooka if (spc->spc_buf == NULL) {
345 1.1 pooka return -1;
346 1.1 pooka }
347 1.1 pooka memset(spc->spc_buf, 0, framelen - HDRSZ);
348 1.1 pooka
349 1.1 pooka /* "fallthrough" */
350 1.1 pooka } else {
351 1.1 pooka /*LINTED*/
352 1.1 pooka framelen = spc->spc_hdr.rsp_len;
353 1.1 pooka }
354 1.1 pooka
355 1.1 pooka left = framelen - spc->spc_off;
356 1.1 pooka
357 1.1 pooka DPRINTF(("rump_sp: readframe getting body at offset %zu, left %zu\n",
358 1.1 pooka spc->spc_off, left));
359 1.1 pooka
360 1.1 pooka if (left == 0)
361 1.1 pooka return 1;
362 1.1 pooka n = read(fd, spc->spc_buf + (spc->spc_off - HDRSZ), left);
363 1.1 pooka if (n == 0) {
364 1.1 pooka return -1;
365 1.1 pooka }
366 1.1 pooka if (n == -1) {
367 1.1 pooka if (errno == EAGAIN)
368 1.1 pooka return 0;
369 1.1 pooka return -1;
370 1.1 pooka }
371 1.1 pooka spc->spc_off += n;
372 1.1 pooka left -= n;
373 1.1 pooka
374 1.1 pooka /* got everything? */
375 1.1 pooka if (left == 0)
376 1.1 pooka return 1;
377 1.1 pooka else
378 1.1 pooka return 0;
379 1.1 pooka }
380 1.1 pooka
381 1.1 pooka static int
382 1.1 pooka tcp_parse(const char *addr, struct sockaddr **sa, int allow_wildcard)
383 1.1 pooka {
384 1.1 pooka struct sockaddr_in sin;
385 1.1 pooka char buf[64];
386 1.1 pooka const char *p;
387 1.1 pooka size_t l;
388 1.1 pooka int port;
389 1.1 pooka
390 1.1 pooka memset(&sin, 0, sizeof(sin));
391 1.1 pooka sin.sin_len = sizeof(sin);
392 1.1 pooka sin.sin_family = AF_INET;
393 1.1 pooka
394 1.1 pooka p = strchr(addr, ':');
395 1.1 pooka if (!p) {
396 1.1 pooka fprintf(stderr, "rump_sp_tcp: missing port specifier\n");
397 1.1 pooka return EINVAL;
398 1.1 pooka }
399 1.1 pooka
400 1.1 pooka l = p - addr;
401 1.1 pooka if (l > sizeof(buf)-1) {
402 1.1 pooka fprintf(stderr, "rump_sp_tcp: address too long\n");
403 1.1 pooka return EINVAL;
404 1.1 pooka }
405 1.1 pooka strncpy(buf, addr, l);
406 1.1 pooka buf[l] = '\0';
407 1.1 pooka
408 1.1 pooka /* special INADDR_ANY treatment */
409 1.1 pooka if (strcmp(buf, "*") == 0 || strcmp(buf, "0") == 0) {
410 1.1 pooka sin.sin_addr.s_addr = INADDR_ANY;
411 1.1 pooka } else {
412 1.1 pooka switch (inet_pton(AF_INET, buf, &sin.sin_addr)) {
413 1.1 pooka case 1:
414 1.1 pooka break;
415 1.1 pooka case 0:
416 1.1 pooka fprintf(stderr, "rump_sp_tcp: cannot parse %s\n", buf);
417 1.1 pooka return EINVAL;
418 1.1 pooka case -1:
419 1.1 pooka fprintf(stderr, "rump_sp_tcp: inet_pton failed\n");
420 1.1 pooka return errno;
421 1.1 pooka default:
422 1.1 pooka assert(/*CONSTCOND*/0);
423 1.1 pooka return EINVAL;
424 1.1 pooka }
425 1.1 pooka }
426 1.1 pooka
427 1.1 pooka if (!allow_wildcard && sin.sin_addr.s_addr == INADDR_ANY) {
428 1.1 pooka fprintf(stderr, "rump_sp_tcp: client needs !INADDR_ANY\n");
429 1.1 pooka return EINVAL;
430 1.1 pooka }
431 1.1 pooka
432 1.1 pooka /* advance to port number & parse */
433 1.1 pooka p++;
434 1.1 pooka l = strspn(p, "0123456789");
435 1.1 pooka if (l == 0) {
436 1.1 pooka fprintf(stderr, "rump_sp_tcp: port now found: %s\n", p);
437 1.1 pooka return EINVAL;
438 1.1 pooka }
439 1.1 pooka strncpy(buf, p, l);
440 1.1 pooka buf[l] = '\0';
441 1.1 pooka
442 1.1 pooka if (*(p+l) != '/' && *(p+l) != '\0') {
443 1.1 pooka fprintf(stderr, "rump_sp_tcp: junk at end of port: %s\n", addr);
444 1.1 pooka return EINVAL;
445 1.1 pooka }
446 1.1 pooka
447 1.1 pooka port = atoi(buf);
448 1.1 pooka if (port < 0 || port >= (1<<(8*sizeof(in_port_t)))) {
449 1.1 pooka fprintf(stderr, "rump_sp_tcp: port %d out of range\n", port);
450 1.1 pooka return ERANGE;
451 1.1 pooka }
452 1.1 pooka sin.sin_port = htons(port);
453 1.1 pooka
454 1.1 pooka *sa = malloc(sizeof(sin));
455 1.1 pooka if (*sa == NULL)
456 1.1 pooka return errno;
457 1.1 pooka memcpy(*sa, &sin, sizeof(sin));
458 1.1 pooka return 0;
459 1.1 pooka }
460 1.1 pooka
461 1.1 pooka static int
462 1.1 pooka tcp_connecthook(int s)
463 1.1 pooka {
464 1.1 pooka int x;
465 1.1 pooka
466 1.1 pooka x = 1;
467 1.1 pooka setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &x, sizeof(x));
468 1.1 pooka
469 1.1 pooka return 0;
470 1.1 pooka }
471 1.1 pooka
472 1.5 pooka /*ARGSUSED*/
473 1.2 pooka static int
474 1.2 pooka unix_parse(const char *addr, struct sockaddr **sa, int allow_wildcard)
475 1.2 pooka {
476 1.2 pooka struct sockaddr_un sun;
477 1.5 pooka size_t slen;
478 1.2 pooka
479 1.2 pooka if (strlen(addr) > sizeof(sun.sun_path))
480 1.2 pooka return ENAMETOOLONG;
481 1.2 pooka
482 1.2 pooka /*
483 1.2 pooka * The pathname can be all kinds of spaghetti elementals,
484 1.2 pooka * so meek and obidient we accept everything.
485 1.2 pooka */
486 1.2 pooka memset(&sun, 0, sizeof(sun));
487 1.2 pooka sun.sun_family = AF_LOCAL;
488 1.2 pooka strlcpy(sun.sun_path, addr, sizeof(sun.sun_path));
489 1.5 pooka sun.sun_len = slen = SUN_LEN(&sun);
490 1.2 pooka
491 1.5 pooka *sa = malloc(slen);
492 1.2 pooka if (*sa == NULL)
493 1.2 pooka return errno;
494 1.5 pooka memcpy(*sa, &sun, slen);
495 1.2 pooka
496 1.2 pooka return 0;
497 1.2 pooka }
498 1.2 pooka
499 1.1 pooka /*ARGSUSED*/
500 1.1 pooka static int
501 1.1 pooka notsupp(void)
502 1.1 pooka {
503 1.1 pooka
504 1.1 pooka fprintf(stderr, "rump_sp: support not yet implemented\n");
505 1.1 pooka return EOPNOTSUPP;
506 1.1 pooka }
507 1.1 pooka
508 1.1 pooka static int
509 1.1 pooka success(void)
510 1.1 pooka {
511 1.1 pooka
512 1.1 pooka return 0;
513 1.1 pooka }
514 1.1 pooka
515 1.1 pooka struct {
516 1.1 pooka const char *id;
517 1.1 pooka int domain;
518 1.1 pooka addrparse_fn ap;
519 1.1 pooka connecthook_fn connhook;
520 1.1 pooka } parsetab[] = {
521 1.1 pooka { "tcp", PF_INET, tcp_parse, tcp_connecthook },
522 1.2 pooka { "unix", PF_LOCAL, unix_parse, (connecthook_fn)success },
523 1.1 pooka { "tcp6", PF_INET6, (addrparse_fn)notsupp, (connecthook_fn)success },
524 1.1 pooka };
525 1.1 pooka #define NPARSE (sizeof(parsetab)/sizeof(parsetab[0]))
526 1.1 pooka
527 1.1 pooka static int
528 1.1 pooka parseurl(const char *url, struct sockaddr **sap, unsigned *idxp,
529 1.1 pooka int allow_wildcard)
530 1.1 pooka {
531 1.1 pooka char id[16];
532 1.1 pooka const char *p, *p2;
533 1.1 pooka size_t l;
534 1.1 pooka unsigned i;
535 1.1 pooka int error;
536 1.1 pooka
537 1.1 pooka /*
538 1.1 pooka * Parse the url
539 1.1 pooka */
540 1.1 pooka
541 1.1 pooka p = url;
542 1.1 pooka p2 = strstr(p, "://");
543 1.1 pooka if (!p2) {
544 1.1 pooka fprintf(stderr, "rump_sp: invalid locator ``%s''\n", p);
545 1.1 pooka return EINVAL;
546 1.1 pooka }
547 1.1 pooka l = p2-p;
548 1.1 pooka if (l > sizeof(id)-1) {
549 1.1 pooka fprintf(stderr, "rump_sp: identifier too long in ``%s''\n", p);
550 1.1 pooka return EINVAL;
551 1.1 pooka }
552 1.1 pooka
553 1.1 pooka strncpy(id, p, l);
554 1.1 pooka id[l] = '\0';
555 1.1 pooka p2 += 3; /* beginning of address */
556 1.1 pooka
557 1.1 pooka for (i = 0; i < NPARSE; i++) {
558 1.1 pooka if (strcmp(id, parsetab[i].id) == 0) {
559 1.1 pooka error = parsetab[i].ap(p2, sap, allow_wildcard);
560 1.1 pooka if (error)
561 1.1 pooka return error;
562 1.1 pooka break;
563 1.1 pooka }
564 1.1 pooka }
565 1.1 pooka if (i == NPARSE) {
566 1.1 pooka fprintf(stderr, "rump_sp: invalid identifier ``%s''\n", p);
567 1.1 pooka return EINVAL;
568 1.1 pooka }
569 1.1 pooka
570 1.1 pooka *idxp = i;
571 1.1 pooka return 0;
572 1.1 pooka }
573