Commit | Line | Data |
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8eabb4ff MW |
1 | /* -*-c-*- |
2 | * | |
3 | * Native-code portions of the project | |
4 | * | |
5 | * (c) 2018 Straylight/Edgeware | |
6 | */ | |
7 | ||
8 | /*----- Licensing notice --------------------------------------------------* | |
9 | * | |
10 | * This file is part of the Trivial IP Encryption (TrIPE) Android app. | |
11 | * | |
12 | * TrIPE is free software: you can redistribute it and/or modify it under | |
13 | * the terms of the GNU General Public License as published by the Free | |
14 | * Software Foundation; either version 3 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * TrIPE is distributed in the hope that it will be useful, but WITHOUT | |
18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
20 | * for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with TrIPE. If not, see <https://www.gnu.org/licenses/>. | |
24 | */ | |
25 | ||
26 | /*----- Header files ------------------------------------------------------*/ | |
27 | ||
28 | #define _FILE_OFFSET_BITS 64 | |
29 | ||
3a2f1a4b | 30 | #include <assert.h> |
8eabb4ff | 31 | #include <ctype.h> |
3a2f1a4b MW |
32 | #include <errno.h> |
33 | #include <inttypes.h> | |
8eabb4ff | 34 | #include <stdarg.h> |
3a2f1a4b MW |
35 | #include <stdio.h> |
36 | #include <stdlib.h> | |
37 | #include <string.h> | |
38 | ||
3bb2303d MW |
39 | #include <dirent.h> |
40 | #include <fcntl.h> | |
41 | #include <netdb.h> | |
42 | #include <unistd.h> | |
43 | #include <sys/ioctl.h> | |
04a5abae | 44 | #include <sys/select.h> |
3a2f1a4b | 45 | #include <sys/socket.h> |
8eabb4ff MW |
46 | #include <sys/stat.h> |
47 | #include <sys/sysmacros.h> | |
3bb2303d | 48 | #include <sys/types.h> |
3a2f1a4b | 49 | #include <sys/un.h> |
3bb2303d MW |
50 | |
51 | #include <jni.h> | |
52 | ||
53 | //#include <linux/if.h> | |
54 | #include <linux/if_tun.h> | |
8eabb4ff MW |
55 | |
56 | #include <mLib/align.h> | |
57 | #include <mLib/bits.h> | |
58 | #include <mLib/dstr.h> | |
59 | #include <mLib/macros.h> | |
60 | ||
61 | #include <catacomb/ghash.h> | |
3a2f1a4b | 62 | |
3bb2303d MW |
63 | #define TUN_INTERNALS |
64 | #include <tripe.h> | |
65 | ||
3a2f1a4b MW |
66 | #undef sun |
67 | ||
8eabb4ff MW |
68 | /*----- Magic class names and similar -------------------------------------*/ |
69 | ||
70 | /* The name decoration is horrific. Hide it. */ | |
25c35469 | 71 | #define JNIFUNC(f) Java_uk_org_distorted_tripe_sys_package_00024_##f |
8eabb4ff MW |
72 | |
73 | /* The little class for bundling up error codes. */ | |
3bb2303d MW |
74 | #define ERRENTCLS "uk/org/distorted/tripe/sys/package$ErrorEntry" |
75 | ||
76 | /* The `sys' package class. */ | |
77 | #define SYSCLS "uk/org/distorted/tripe/sys/package" | |
78 | ||
79 | /* The server lock class. */ | |
80 | #define LOCKCLS "uk/org/distorted/tripe/sys/package$ServerLock" | |
8eabb4ff MW |
81 | |
82 | /* The `stat' class. */ | |
3bb2303d MW |
83 | #define STATCLS "uk/org/distorted/tripe/sys/package$FileInfo" |
84 | ||
85 | /* Standard Java classes. */ | |
86 | #define FDCLS "java/io/FileDescriptor" | |
87 | #define STRCLS "java/lang/String" | |
88 | #define RANDCLS "java/security/SecureRandom" | |
8eabb4ff MW |
89 | |
90 | /* Exception class names. */ | |
91 | #define NULLERR "java/lang/NullPointerException" | |
25c35469 | 92 | #define TYPEERR "uk/org/distorted/tripe/sys/package$NativeObjectTypeException" |
8eabb4ff | 93 | #define SYSERR "uk/org/distorted/tripe/sys/package$SystemError" |
3bb2303d MW |
94 | #define NAMEERR "uk/org/distorted/tripe/sys/package$NameResolutionException" |
95 | #define INITERR "uk/org/distorted/tripe/sys/package$InitializationException" | |
8eabb4ff | 96 | #define ARGERR "java/lang/IllegalArgumentException" |
3bb2303d | 97 | #define STERR "java/lang/IllegalStateException" |
8eabb4ff MW |
98 | #define BOUNDSERR "java/lang/IndexOutOfBoundsException" |
99 | ||
3bb2303d | 100 | /*----- Essential state ---------------------------------------------------*/ |
8eabb4ff | 101 | |
3bb2303d MW |
102 | static JNIEnv *jni_tripe = 0; |
103 | ||
104 | /*----- Miscellaneous utilities -------------------------------------------*/ | |
8eabb4ff MW |
105 | |
106 | static void vexcept(JNIEnv *jni, const char *clsname, | |
25c35469 | 107 | const char *msg, va_list *ap) |
8eabb4ff MW |
108 | { |
109 | jclass cls; | |
110 | int rc; | |
111 | dstr d = DSTR_INIT; | |
112 | ||
113 | cls = (*jni)->FindClass(jni, clsname); assert(cls); | |
114 | if (!msg) | |
115 | rc = (*jni)->ThrowNew(jni, cls, 0); | |
116 | else { | |
25c35469 | 117 | dstr_vputf(&d, msg, ap); |
8eabb4ff MW |
118 | rc = (*jni)->ThrowNew(jni, cls, d.buf); |
119 | assert(!rc); | |
120 | dstr_destroy(&d); | |
121 | } | |
122 | assert(!rc); | |
123 | } | |
124 | ||
125 | static void except(JNIEnv *jni, const char *clsname, const char *msg, ...) | |
126 | { | |
127 | va_list ap; | |
128 | ||
129 | va_start(ap, msg); | |
25c35469 | 130 | vexcept(jni, clsname, msg, &ap); |
8eabb4ff MW |
131 | va_end(ap); |
132 | } | |
133 | ||
134 | #ifdef DEBUG | |
135 | static void dump_bytes(const void *p, size_t n, size_t o) | |
136 | { | |
137 | const unsigned char *q = p; | |
138 | size_t i; | |
139 | ||
140 | if (!n) return; | |
141 | for (;;) { | |
142 | fprintf(stderr, ";; %08zx\n", o); | |
143 | for (i = 0; i < 8; i++) | |
144 | if (i < n) fprintf(stderr, "%02x ", q[i]); | |
145 | else fprintf(stderr, "** "); | |
146 | fprintf(stderr, ": "); | |
147 | for (i = 0; i < 8; i++) | |
148 | fputc(i >= n ? '*' : isprint(q[i]) ? q[i] : '.', stderr); | |
149 | fputc('\n', stderr); | |
150 | if (n <= 8) break; | |
151 | q += 8; n -= 8; | |
152 | } | |
153 | } | |
154 | ||
155 | static void dump_byte_array(JNIEnv *jni, const char *what, jbyteArray v) | |
156 | { | |
157 | jsize n; | |
158 | jbyte *p; | |
159 | ||
160 | fprintf(stderr, ";; %s\n", what); | |
161 | if (!v) { fprintf(stderr, ";; <null>\n"); return; } | |
162 | n = (*jni)->GetArrayLength(jni, v); | |
163 | p = (*jni)->GetByteArrayElements(jni, v, 0); | |
164 | dump_bytes(p, n, 0); | |
165 | (*jni)->ReleaseByteArrayElements(jni, v, p, JNI_ABORT); | |
166 | } | |
167 | #endif | |
168 | ||
169 | static jbyteArray wrap_cstring(JNIEnv *jni, const char *p) | |
170 | { | |
171 | size_t n; | |
172 | jbyteArray v; | |
173 | jbyte *q; | |
174 | ||
175 | if (!p) return (0); | |
176 | n = strlen(p) + 1; | |
177 | v = (*jni)->NewByteArray(jni, n); if (!v) return (0); | |
178 | q = (*jni)->GetByteArrayElements(jni, v, 0); if (!q) return (0); | |
179 | memcpy(q, p, n); | |
180 | (*jni)->ReleaseByteArrayElements(jni, v, q, 0); | |
181 | return (v); | |
182 | } | |
183 | ||
184 | static const char *get_cstring(JNIEnv *jni, jbyteArray v) | |
185 | { | |
186 | if (!v) { except(jni, NULLERR, 0); return (0); } | |
187 | return ((const char *)(*jni)->GetByteArrayElements(jni, v, 0)); | |
188 | } | |
189 | ||
3bb2303d MW |
190 | static void put_cstring(JNIEnv *jni, jbyteArray v, const char *p) |
191 | { if (p) (*jni)->ReleaseByteArrayElements(jni, v, (jbyte *)p, JNI_ABORT); } | |
192 | ||
8eabb4ff | 193 | static void vexcept_syserror(JNIEnv *jni, const char *clsname, |
25c35469 | 194 | int err, const char *msg, va_list *ap) |
8eabb4ff MW |
195 | { |
196 | jclass cls; | |
197 | int rc; | |
198 | dstr d = DSTR_INIT; | |
199 | jbyteArray msgstr; | |
200 | jthrowable e; | |
201 | jmethodID init; | |
202 | ||
203 | cls = (*jni)->FindClass(jni, clsname); assert(cls); | |
204 | init = (*jni)->GetMethodID(jni, cls, "<init>", "(I[B)V"); assert(init); | |
25c35469 | 205 | dstr_vputf(&d, msg, ap); |
8eabb4ff MW |
206 | msgstr = wrap_cstring(jni, d.buf); assert(msgstr); |
207 | dstr_destroy(&d); | |
208 | e = (*jni)->NewObject(jni, cls, init, err, msgstr); assert(e); | |
209 | rc = (*jni)->Throw(jni, e); assert(!rc); | |
210 | } | |
211 | ||
212 | static void except_syserror(JNIEnv *jni, const char *clsname, | |
213 | int err, const char *msg, ...) | |
214 | { | |
215 | va_list ap; | |
216 | ||
217 | va_start(ap, msg); | |
25c35469 | 218 | vexcept_syserror(jni, clsname, err, msg, &ap); |
8eabb4ff MW |
219 | va_end(ap); |
220 | } | |
221 | ||
04a5abae MW |
222 | static int set_nonblocking(JNIEnv *jni, int fd, int nb) |
223 | { | |
224 | int f0 = fcntl(fd, F_GETFL), f1; | |
225 | if (f0 < 0) goto err; | |
226 | if (nb) f1 = f0 | O_NONBLOCK; | |
227 | else f1 = f0&~O_NONBLOCK; | |
228 | if (fcntl(fd, F_SETFL, f1)) goto err; | |
229 | return (f0 & O_NONBLOCK); | |
230 | err: | |
231 | except_syserror(jni, SYSERR, errno, | |
232 | "failed to set descriptor nonblocking"); | |
233 | return (-1); | |
234 | } | |
235 | ||
236 | static int set_closeonexec(JNIEnv *jni, int fd) | |
237 | { | |
238 | int f = fcntl(fd, F_GETFD); | |
239 | if (f < 0 || fcntl(fd, F_SETFD, f | FD_CLOEXEC)) { | |
240 | except_syserror(jni, SYSERR, errno, | |
241 | "failed to set descriptor close-on-exec"); | |
242 | return (-1); | |
243 | } | |
244 | return (0); | |
245 | } | |
246 | ||
8eabb4ff MW |
247 | /*----- Wrapping native types ---------------------------------------------*/ |
248 | ||
249 | /* There's no way defined in the JNI to stash a C pointer in a Java object. | |
250 | * It seems that the usual approach is to cast to `jlong', but this is | |
251 | * clearly unsatisfactory. Instead, we store structures as Java byte arrays, | |
252 | * with a 32-bit tag on the front. | |
253 | */ | |
3a2f1a4b MW |
254 | |
255 | struct native_type { | |
256 | const char *name; | |
257 | size_t sz; | |
8eabb4ff | 258 | uint32 tag; |
3a2f1a4b MW |
259 | }; |
260 | ||
8eabb4ff | 261 | typedef jbyteArray wrapper; |
3a2f1a4b | 262 | |
8eabb4ff MW |
263 | struct native_base { |
264 | uint32 tag; | |
3a2f1a4b MW |
265 | }; |
266 | ||
8eabb4ff MW |
267 | static int unwrap(JNIEnv *jni, void *p, |
268 | const struct native_type *ty, wrapper w) | |
269 | { | |
270 | jbyte *q; | |
271 | jclass cls; | |
272 | struct native_base *b = p; | |
273 | jsize n; | |
274 | ||
275 | if (!w) { except(jni, NULLERR, 0); return (-1); } | |
276 | cls = (*jni)->FindClass(jni, "[B"); assert(cls); | |
277 | if (!(*jni)->IsInstanceOf(jni, w, cls)) { | |
278 | except(jni, TYPEERR, | |
279 | "corrupted native object wrapper: expected a byte array"); | |
280 | return (-1); | |
281 | } | |
282 | n = (*jni)->GetArrayLength(jni, w); | |
283 | if (n != ty->sz) { | |
284 | except(jni, TYPEERR, | |
285 | "corrupted native object wrapper: wrong size for `%s'", | |
286 | ty->name); | |
287 | return (-1); | |
288 | } | |
289 | q = (*jni)->GetByteArrayElements(jni, w, 0); if (!q) return (-1); | |
290 | memcpy(b, q, ty->sz); | |
291 | (*jni)->ReleaseByteArrayElements(jni, w, q, JNI_ABORT); | |
292 | if (b->tag != ty->tag) { | |
293 | except(jni, TYPEERR, | |
294 | "corrupted native object wrapper: expected tag for `%s'", | |
295 | ty->name); | |
296 | return (-1); | |
297 | } | |
298 | return (0); | |
299 | } | |
300 | ||
301 | static int update_wrapper(JNIEnv *jni, const struct native_type *ty, | |
302 | wrapper w, const void *p) | |
303 | { | |
304 | jbyte *q; | |
305 | ||
306 | q = (*jni)->GetByteArrayElements(jni, w, 0); if (!q) return (-1); | |
307 | memcpy(q, p, ty->sz); | |
308 | (*jni)->ReleaseByteArrayElements(jni, w, q, 0); | |
309 | return (0); | |
310 | } | |
311 | ||
312 | static wrapper wrap(JNIEnv *jni, const struct native_type *ty, const void *p) | |
313 | { | |
314 | wrapper w; | |
315 | ||
316 | w = (*jni)->NewByteArray(jni, ty->sz); if (!w) return (0); | |
317 | if (update_wrapper(jni, ty, w, p)) return (0); | |
318 | return (w); | |
319 | } | |
320 | ||
321 | #define INIT_NATIVE(type, p) do (p)->_base.tag = type##_type.tag; while (0) | |
322 | ||
323 | /*----- Crypto information ------------------------------------------------*/ | |
324 | ||
325 | JNIEXPORT jint JNICALL JNIFUNC(hashsz)(JNIEnv *jni, jobject cls, | |
326 | jstring hnamestr) | |
327 | { | |
328 | jint rc = -1; | |
329 | const char *hname; | |
330 | const gchash *hc; | |
331 | ||
332 | hname = (*jni)->GetStringUTFChars(jni, hnamestr, 0); | |
333 | if (!hname) goto end; | |
334 | hc = ghash_byname(hname); if (!hc) goto end; | |
335 | rc = hc->hashsz; | |
336 | ||
337 | end: | |
338 | if (hname) (*jni)->ReleaseStringUTFChars(jni, hnamestr, hname); | |
339 | return (rc); | |
340 | } | |
341 | ||
342 | /*----- System errors -----------------------------------------------------*/ | |
343 | ||
344 | static const struct errtab { const char *tag; int err; } errtab[] = { | |
345 | /* | |
346 | ;;; The errno name table is very boring to type. To make life less | |
347 | ;;; awful, put the errno names in this list and evaluate the code to | |
348 | ;;; get Emacs to regenerate it. | |
349 | ||
350 | (let ((errors '(EPERM ENOENT ESRCH EINTR EIO ENXIO E2BIG ENOEXEC EBADF | |
351 | ECHILD EAGAIN ENOMEM EACCES EFAULT ENOTBLK EBUSY EEXIST | |
352 | EXDEV ENODEV ENOTDIR EISDIR EINVAL ENFILE EMFILE ENOTTY | |
353 | ETXTBSY EFBIG ENOSPC ESPIPE EROFS EMLINK EPIPE EDOM | |
354 | ERANGE | |
355 | ||
356 | EDEADLK ENAMETOOLONG ENOLCK ENOSYS ENOTEMPTY ELOOP | |
357 | EWOULDBLOCK ENOMSG EIDRM ECHRNG EL2NSYNC EL3HLT EL3RST | |
358 | ELNRNG EUNATCH ENOCSI EL2HLT EBADE EBADR EXFULL ENOANO | |
359 | EBADRQC EBADSLT EDEADLOCK EBFONT ENOSTR ENODATA ETIME | |
360 | ENOSR ENONET ENOPKG EREMOTE ENOLINK EADV ESRMNT ECOMM | |
361 | EPROTO EMULTIHOP EDOTDOT EBADMSG EOVERFLOW ENOTUNIQ | |
362 | EBADFD EREMCHG ELIBACC ELIBBAD ELIBSCN ELIBMAX ELIBEXEC | |
363 | EILSEQ ERESTART ESTRPIPE EUSERS ENOTSOCK EDESTADDRREQ | |
364 | EMSGSIZE EPROTOTYPE ENOPROTOOPT EPROTONOSUPPORT | |
365 | ESOCKTNOSUPPORT EOPNOTSUPP EPFNOSUPPORT EAFNOSUPPORT | |
366 | EADDRINUSE EADDRNOTAVAIL ENETDOWN ENETUNREACH ENETRESET | |
367 | ECONNABORTED ECONNRESET ENOBUFS EISCONN ENOTCONN | |
368 | ESHUTDOWN ETOOMANYREFS ETIMEDOUT ECONNREFUSED EHOSTDOWN | |
369 | EHOSTUNREACH EALREADY EINPROGRESS ESTALE EUCLEAN ENOTNAM | |
370 | ENAVAIL EISNAM EREMOTEIO EDQUOT ENOMEDIUM EMEDIUMTYPE | |
371 | ECANCELED ENOKEY EKEYEXPIRED EKEYREVOKED EKEYREJECTED | |
372 | EOWNERDEAD ENOTRECOVERABLE ERFKILL EHWPOISON))) | |
373 | (save-excursion | |
c8292b34 MW |
374 | (goto-char (point-min)) |
375 | (search-forward (concat "***" "BEGIN errtab" "***")) | |
376 | (beginning-of-line 2) | |
377 | (delete-region (point) | |
378 | (progn | |
379 | (search-forward "***END***") | |
380 | (beginning-of-line) | |
381 | (point))) | |
382 | (dolist (err errors) | |
383 | (insert (format "#ifdef %s\n { \"%s\", %s },\n#endif\n" | |
384 | err err err))))) | |
8eabb4ff MW |
385 | */ |
386 | /***BEGIN errtab***/ | |
387 | #ifdef EPERM | |
388 | { "EPERM", EPERM }, | |
389 | #endif | |
390 | #ifdef ENOENT | |
391 | { "ENOENT", ENOENT }, | |
392 | #endif | |
393 | #ifdef ESRCH | |
394 | { "ESRCH", ESRCH }, | |
395 | #endif | |
396 | #ifdef EINTR | |
397 | { "EINTR", EINTR }, | |
398 | #endif | |
399 | #ifdef EIO | |
400 | { "EIO", EIO }, | |
401 | #endif | |
402 | #ifdef ENXIO | |
403 | { "ENXIO", ENXIO }, | |
404 | #endif | |
405 | #ifdef E2BIG | |
406 | { "E2BIG", E2BIG }, | |
407 | #endif | |
408 | #ifdef ENOEXEC | |
409 | { "ENOEXEC", ENOEXEC }, | |
410 | #endif | |
411 | #ifdef EBADF | |
412 | { "EBADF", EBADF }, | |
413 | #endif | |
414 | #ifdef ECHILD | |
415 | { "ECHILD", ECHILD }, | |
416 | #endif | |
417 | #ifdef EAGAIN | |
418 | { "EAGAIN", EAGAIN }, | |
419 | #endif | |
420 | #ifdef ENOMEM | |
421 | { "ENOMEM", ENOMEM }, | |
422 | #endif | |
423 | #ifdef EACCES | |
424 | { "EACCES", EACCES }, | |
425 | #endif | |
426 | #ifdef EFAULT | |
427 | { "EFAULT", EFAULT }, | |
428 | #endif | |
429 | #ifdef ENOTBLK | |
430 | { "ENOTBLK", ENOTBLK }, | |
431 | #endif | |
432 | #ifdef EBUSY | |
433 | { "EBUSY", EBUSY }, | |
434 | #endif | |
435 | #ifdef EEXIST | |
436 | { "EEXIST", EEXIST }, | |
437 | #endif | |
438 | #ifdef EXDEV | |
439 | { "EXDEV", EXDEV }, | |
440 | #endif | |
441 | #ifdef ENODEV | |
442 | { "ENODEV", ENODEV }, | |
443 | #endif | |
444 | #ifdef ENOTDIR | |
445 | { "ENOTDIR", ENOTDIR }, | |
446 | #endif | |
447 | #ifdef EISDIR | |
448 | { "EISDIR", EISDIR }, | |
449 | #endif | |
450 | #ifdef EINVAL | |
451 | { "EINVAL", EINVAL }, | |
452 | #endif | |
453 | #ifdef ENFILE | |
454 | { "ENFILE", ENFILE }, | |
455 | #endif | |
456 | #ifdef EMFILE | |
457 | { "EMFILE", EMFILE }, | |
458 | #endif | |
459 | #ifdef ENOTTY | |
460 | { "ENOTTY", ENOTTY }, | |
461 | #endif | |
462 | #ifdef ETXTBSY | |
463 | { "ETXTBSY", ETXTBSY }, | |
464 | #endif | |
465 | #ifdef EFBIG | |
466 | { "EFBIG", EFBIG }, | |
467 | #endif | |
468 | #ifdef ENOSPC | |
469 | { "ENOSPC", ENOSPC }, | |
470 | #endif | |
471 | #ifdef ESPIPE | |
472 | { "ESPIPE", ESPIPE }, | |
473 | #endif | |
474 | #ifdef EROFS | |
475 | { "EROFS", EROFS }, | |
476 | #endif | |
477 | #ifdef EMLINK | |
478 | { "EMLINK", EMLINK }, | |
479 | #endif | |
480 | #ifdef EPIPE | |
481 | { "EPIPE", EPIPE }, | |
482 | #endif | |
483 | #ifdef EDOM | |
484 | { "EDOM", EDOM }, | |
485 | #endif | |
486 | #ifdef ERANGE | |
487 | { "ERANGE", ERANGE }, | |
488 | #endif | |
489 | #ifdef EDEADLK | |
490 | { "EDEADLK", EDEADLK }, | |
491 | #endif | |
492 | #ifdef ENAMETOOLONG | |
493 | { "ENAMETOOLONG", ENAMETOOLONG }, | |
494 | #endif | |
495 | #ifdef ENOLCK | |
496 | { "ENOLCK", ENOLCK }, | |
497 | #endif | |
498 | #ifdef ENOSYS | |
499 | { "ENOSYS", ENOSYS }, | |
500 | #endif | |
501 | #ifdef ENOTEMPTY | |
502 | { "ENOTEMPTY", ENOTEMPTY }, | |
503 | #endif | |
504 | #ifdef ELOOP | |
505 | { "ELOOP", ELOOP }, | |
506 | #endif | |
507 | #ifdef EWOULDBLOCK | |
508 | { "EWOULDBLOCK", EWOULDBLOCK }, | |
509 | #endif | |
510 | #ifdef ENOMSG | |
511 | { "ENOMSG", ENOMSG }, | |
512 | #endif | |
513 | #ifdef EIDRM | |
514 | { "EIDRM", EIDRM }, | |
515 | #endif | |
516 | #ifdef ECHRNG | |
517 | { "ECHRNG", ECHRNG }, | |
518 | #endif | |
519 | #ifdef EL2NSYNC | |
520 | { "EL2NSYNC", EL2NSYNC }, | |
521 | #endif | |
522 | #ifdef EL3HLT | |
523 | { "EL3HLT", EL3HLT }, | |
524 | #endif | |
525 | #ifdef EL3RST | |
526 | { "EL3RST", EL3RST }, | |
527 | #endif | |
528 | #ifdef ELNRNG | |
529 | { "ELNRNG", ELNRNG }, | |
530 | #endif | |
531 | #ifdef EUNATCH | |
532 | { "EUNATCH", EUNATCH }, | |
533 | #endif | |
534 | #ifdef ENOCSI | |
535 | { "ENOCSI", ENOCSI }, | |
536 | #endif | |
537 | #ifdef EL2HLT | |
538 | { "EL2HLT", EL2HLT }, | |
539 | #endif | |
540 | #ifdef EBADE | |
541 | { "EBADE", EBADE }, | |
542 | #endif | |
543 | #ifdef EBADR | |
544 | { "EBADR", EBADR }, | |
545 | #endif | |
546 | #ifdef EXFULL | |
547 | { "EXFULL", EXFULL }, | |
548 | #endif | |
549 | #ifdef ENOANO | |
550 | { "ENOANO", ENOANO }, | |
551 | #endif | |
552 | #ifdef EBADRQC | |
553 | { "EBADRQC", EBADRQC }, | |
554 | #endif | |
555 | #ifdef EBADSLT | |
556 | { "EBADSLT", EBADSLT }, | |
557 | #endif | |
558 | #ifdef EDEADLOCK | |
559 | { "EDEADLOCK", EDEADLOCK }, | |
560 | #endif | |
561 | #ifdef EBFONT | |
562 | { "EBFONT", EBFONT }, | |
563 | #endif | |
564 | #ifdef ENOSTR | |
565 | { "ENOSTR", ENOSTR }, | |
566 | #endif | |
567 | #ifdef ENODATA | |
568 | { "ENODATA", ENODATA }, | |
569 | #endif | |
570 | #ifdef ETIME | |
571 | { "ETIME", ETIME }, | |
572 | #endif | |
573 | #ifdef ENOSR | |
574 | { "ENOSR", ENOSR }, | |
575 | #endif | |
576 | #ifdef ENONET | |
577 | { "ENONET", ENONET }, | |
578 | #endif | |
579 | #ifdef ENOPKG | |
580 | { "ENOPKG", ENOPKG }, | |
581 | #endif | |
582 | #ifdef EREMOTE | |
583 | { "EREMOTE", EREMOTE }, | |
584 | #endif | |
585 | #ifdef ENOLINK | |
586 | { "ENOLINK", ENOLINK }, | |
587 | #endif | |
588 | #ifdef EADV | |
589 | { "EADV", EADV }, | |
590 | #endif | |
591 | #ifdef ESRMNT | |
592 | { "ESRMNT", ESRMNT }, | |
593 | #endif | |
594 | #ifdef ECOMM | |
595 | { "ECOMM", ECOMM }, | |
596 | #endif | |
597 | #ifdef EPROTO | |
598 | { "EPROTO", EPROTO }, | |
599 | #endif | |
600 | #ifdef EMULTIHOP | |
601 | { "EMULTIHOP", EMULTIHOP }, | |
602 | #endif | |
603 | #ifdef EDOTDOT | |
604 | { "EDOTDOT", EDOTDOT }, | |
605 | #endif | |
606 | #ifdef EBADMSG | |
607 | { "EBADMSG", EBADMSG }, | |
608 | #endif | |
609 | #ifdef EOVERFLOW | |
610 | { "EOVERFLOW", EOVERFLOW }, | |
611 | #endif | |
612 | #ifdef ENOTUNIQ | |
613 | { "ENOTUNIQ", ENOTUNIQ }, | |
614 | #endif | |
615 | #ifdef EBADFD | |
616 | { "EBADFD", EBADFD }, | |
617 | #endif | |
618 | #ifdef EREMCHG | |
619 | { "EREMCHG", EREMCHG }, | |
620 | #endif | |
621 | #ifdef ELIBACC | |
622 | { "ELIBACC", ELIBACC }, | |
623 | #endif | |
624 | #ifdef ELIBBAD | |
625 | { "ELIBBAD", ELIBBAD }, | |
626 | #endif | |
627 | #ifdef ELIBSCN | |
628 | { "ELIBSCN", ELIBSCN }, | |
629 | #endif | |
630 | #ifdef ELIBMAX | |
631 | { "ELIBMAX", ELIBMAX }, | |
632 | #endif | |
633 | #ifdef ELIBEXEC | |
634 | { "ELIBEXEC", ELIBEXEC }, | |
635 | #endif | |
636 | #ifdef EILSEQ | |
637 | { "EILSEQ", EILSEQ }, | |
638 | #endif | |
639 | #ifdef ERESTART | |
640 | { "ERESTART", ERESTART }, | |
641 | #endif | |
642 | #ifdef ESTRPIPE | |
643 | { "ESTRPIPE", ESTRPIPE }, | |
644 | #endif | |
645 | #ifdef EUSERS | |
646 | { "EUSERS", EUSERS }, | |
647 | #endif | |
648 | #ifdef ENOTSOCK | |
649 | { "ENOTSOCK", ENOTSOCK }, | |
650 | #endif | |
651 | #ifdef EDESTADDRREQ | |
652 | { "EDESTADDRREQ", EDESTADDRREQ }, | |
653 | #endif | |
654 | #ifdef EMSGSIZE | |
655 | { "EMSGSIZE", EMSGSIZE }, | |
656 | #endif | |
657 | #ifdef EPROTOTYPE | |
658 | { "EPROTOTYPE", EPROTOTYPE }, | |
659 | #endif | |
660 | #ifdef ENOPROTOOPT | |
661 | { "ENOPROTOOPT", ENOPROTOOPT }, | |
662 | #endif | |
663 | #ifdef EPROTONOSUPPORT | |
664 | { "EPROTONOSUPPORT", EPROTONOSUPPORT }, | |
665 | #endif | |
666 | #ifdef ESOCKTNOSUPPORT | |
667 | { "ESOCKTNOSUPPORT", ESOCKTNOSUPPORT }, | |
668 | #endif | |
669 | #ifdef EOPNOTSUPP | |
670 | { "EOPNOTSUPP", EOPNOTSUPP }, | |
671 | #endif | |
672 | #ifdef EPFNOSUPPORT | |
673 | { "EPFNOSUPPORT", EPFNOSUPPORT }, | |
674 | #endif | |
675 | #ifdef EAFNOSUPPORT | |
676 | { "EAFNOSUPPORT", EAFNOSUPPORT }, | |
677 | #endif | |
678 | #ifdef EADDRINUSE | |
679 | { "EADDRINUSE", EADDRINUSE }, | |
680 | #endif | |
681 | #ifdef EADDRNOTAVAIL | |
682 | { "EADDRNOTAVAIL", EADDRNOTAVAIL }, | |
683 | #endif | |
684 | #ifdef ENETDOWN | |
685 | { "ENETDOWN", ENETDOWN }, | |
686 | #endif | |
687 | #ifdef ENETUNREACH | |
688 | { "ENETUNREACH", ENETUNREACH }, | |
689 | #endif | |
690 | #ifdef ENETRESET | |
691 | { "ENETRESET", ENETRESET }, | |
692 | #endif | |
693 | #ifdef ECONNABORTED | |
694 | { "ECONNABORTED", ECONNABORTED }, | |
695 | #endif | |
696 | #ifdef ECONNRESET | |
697 | { "ECONNRESET", ECONNRESET }, | |
698 | #endif | |
699 | #ifdef ENOBUFS | |
700 | { "ENOBUFS", ENOBUFS }, | |
701 | #endif | |
702 | #ifdef EISCONN | |
703 | { "EISCONN", EISCONN }, | |
704 | #endif | |
705 | #ifdef ENOTCONN | |
706 | { "ENOTCONN", ENOTCONN }, | |
707 | #endif | |
708 | #ifdef ESHUTDOWN | |
709 | { "ESHUTDOWN", ESHUTDOWN }, | |
710 | #endif | |
711 | #ifdef ETOOMANYREFS | |
712 | { "ETOOMANYREFS", ETOOMANYREFS }, | |
713 | #endif | |
714 | #ifdef ETIMEDOUT | |
715 | { "ETIMEDOUT", ETIMEDOUT }, | |
716 | #endif | |
717 | #ifdef ECONNREFUSED | |
718 | { "ECONNREFUSED", ECONNREFUSED }, | |
719 | #endif | |
720 | #ifdef EHOSTDOWN | |
721 | { "EHOSTDOWN", EHOSTDOWN }, | |
722 | #endif | |
723 | #ifdef EHOSTUNREACH | |
724 | { "EHOSTUNREACH", EHOSTUNREACH }, | |
725 | #endif | |
726 | #ifdef EALREADY | |
727 | { "EALREADY", EALREADY }, | |
728 | #endif | |
729 | #ifdef EINPROGRESS | |
730 | { "EINPROGRESS", EINPROGRESS }, | |
731 | #endif | |
732 | #ifdef ESTALE | |
733 | { "ESTALE", ESTALE }, | |
734 | #endif | |
735 | #ifdef EUCLEAN | |
736 | { "EUCLEAN", EUCLEAN }, | |
737 | #endif | |
738 | #ifdef ENOTNAM | |
739 | { "ENOTNAM", ENOTNAM }, | |
740 | #endif | |
741 | #ifdef ENAVAIL | |
742 | { "ENAVAIL", ENAVAIL }, | |
743 | #endif | |
744 | #ifdef EISNAM | |
745 | { "EISNAM", EISNAM }, | |
746 | #endif | |
747 | #ifdef EREMOTEIO | |
748 | { "EREMOTEIO", EREMOTEIO }, | |
749 | #endif | |
750 | #ifdef EDQUOT | |
751 | { "EDQUOT", EDQUOT }, | |
752 | #endif | |
753 | #ifdef ENOMEDIUM | |
754 | { "ENOMEDIUM", ENOMEDIUM }, | |
755 | #endif | |
756 | #ifdef EMEDIUMTYPE | |
757 | { "EMEDIUMTYPE", EMEDIUMTYPE }, | |
758 | #endif | |
759 | #ifdef ECANCELED | |
760 | { "ECANCELED", ECANCELED }, | |
761 | #endif | |
762 | #ifdef ENOKEY | |
763 | { "ENOKEY", ENOKEY }, | |
764 | #endif | |
765 | #ifdef EKEYEXPIRED | |
766 | { "EKEYEXPIRED", EKEYEXPIRED }, | |
767 | #endif | |
768 | #ifdef EKEYREVOKED | |
769 | { "EKEYREVOKED", EKEYREVOKED }, | |
770 | #endif | |
771 | #ifdef EKEYREJECTED | |
772 | { "EKEYREJECTED", EKEYREJECTED }, | |
773 | #endif | |
774 | #ifdef EOWNERDEAD | |
775 | { "EOWNERDEAD", EOWNERDEAD }, | |
776 | #endif | |
777 | #ifdef ENOTRECOVERABLE | |
778 | { "ENOTRECOVERABLE", ENOTRECOVERABLE }, | |
779 | #endif | |
780 | #ifdef ERFKILL | |
781 | { "ERFKILL", ERFKILL }, | |
782 | #endif | |
783 | #ifdef EHWPOISON | |
784 | { "EHWPOISON", EHWPOISON }, | |
785 | #endif | |
786 | /***END***/ | |
3a2f1a4b MW |
787 | }; |
788 | ||
8eabb4ff | 789 | JNIEXPORT jobject JNIFUNC(errtab)(JNIEnv *jni, jobject cls) |
3a2f1a4b | 790 | { |
8eabb4ff MW |
791 | size_t i; |
792 | jclass eltcls; | |
793 | jarray v; | |
794 | jmethodID init; | |
795 | jobject e; | |
3a2f1a4b | 796 | |
8eabb4ff | 797 | eltcls = |
3bb2303d | 798 | (*jni)->FindClass(jni, ERRENTCLS); |
8eabb4ff MW |
799 | assert(eltcls); |
800 | v = (*jni)->NewObjectArray(jni, N(errtab), eltcls, 0); if (!v) return (0); | |
801 | init = (*jni)->GetMethodID(jni, eltcls, "<init>", | |
3bb2303d | 802 | "(L"STRCLS";I)V"); |
8eabb4ff MW |
803 | assert(init); |
804 | ||
805 | for (i = 0; i < N(errtab); i++) { | |
806 | e = (*jni)->NewObject(jni, eltcls, init, | |
807 | (*jni)->NewStringUTF(jni, errtab[i].tag), | |
808 | errtab[i].err); | |
809 | (*jni)->SetObjectArrayElement(jni, v, i, e); | |
810 | } | |
811 | return (v); | |
812 | } | |
813 | ||
814 | JNIEXPORT jobject JNIFUNC(strerror)(JNIEnv *jni, jobject cls, jint err) | |
815 | { return (wrap_cstring(jni, strerror(err))); } | |
816 | ||
c8292b34 MW |
817 | /*----- Messing with file descriptors -------------------------------------*/ |
818 | ||
819 | static void fdguts(JNIEnv *jni, jclass *cls, jfieldID *fid) | |
820 | { | |
3bb2303d | 821 | *cls = (*jni)->FindClass(jni, FDCLS); assert(cls); |
c8292b34 MW |
822 | *fid = (*jni)->GetFieldID(jni, *cls, "fd", "I"); // OpenJDK |
823 | if (!*fid) *fid = (*jni)->GetFieldID(jni, *cls, "descriptor", "I"); // Android | |
824 | assert(*fid); | |
825 | } | |
826 | ||
827 | static int fdint(JNIEnv *jni, jobject jfd) | |
828 | { | |
829 | jclass cls; | |
830 | jfieldID fid; | |
831 | ||
832 | fdguts(jni, &cls, &fid); | |
833 | return ((*jni)->GetIntField(jni, jfd, fid)); | |
834 | } | |
835 | ||
836 | static jobject newfd(JNIEnv *jni, int fd) | |
837 | { | |
838 | jobject jfd; | |
839 | jclass cls; | |
840 | jmethodID init; | |
841 | jfieldID fid; | |
842 | ||
843 | fdguts(jni, &cls, &fid); | |
844 | init = (*jni)->GetMethodID(jni, cls, "<init>", "()V"); assert(init); | |
845 | jfd = (*jni)->NewObject(jni, cls, init); | |
846 | (*jni)->SetIntField(jni, jfd, fid, fd); | |
847 | return (jfd); | |
848 | } | |
849 | ||
850 | JNIEXPORT jint JNIFUNC(fdint)(JNIEnv *jni, jobject cls, jobject jfd) | |
851 | { return (fdint(jni, jfd)); } | |
852 | ||
853 | JNIEXPORT jobject JNIFUNC(newfd)(JNIEnv *jni, jobject cls, jint fd) | |
854 | { return (newfd(jni, fd)); } | |
855 | ||
856 | JNIEXPORT jboolean JNIFUNC(isatty)(JNIEnv *jni, jobject cls, jobject jfd) | |
857 | { return (isatty(fdint(jni, jfd))); } | |
858 | ||
8eabb4ff MW |
859 | /*----- Low-level file operations -----------------------------------------*/ |
860 | ||
861 | /* Java has these already, as methods on `java.io.File' objects. Alas, these | |
862 | * methods are useless at reporting errors: they tend to return a `boolean' | |
04a5abae | 863 | * success/fail indicator, and throw away any more detailed information. |
8eabb4ff MW |
864 | * There's better functionality in `java.nio.file.Files', but that only turns |
865 | * up in Android API 26 (in 7.0 Nougat). There's `android.system.Os', which | |
866 | * has a bunch of POSIX-shaped functions -- but they're only in Android API | |
867 | * 21 (in 5.0 Lollipop), and there's nothing in the support library to help. | |
868 | * | |
869 | * So the other option is to implement them ourselves. | |
870 | */ | |
871 | ||
872 | JNIEXPORT void JNIFUNC(unlink)(JNIEnv *jni, jobject cls, jobject path) | |
873 | { | |
874 | const char *pathstr = 0; | |
875 | ||
876 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
877 | if (unlink(pathstr)) { | |
878 | except_syserror(jni, SYSERR, errno, | |
879 | "failed to delete file `%s'", pathstr); | |
880 | goto end; | |
881 | } | |
882 | end: | |
883 | put_cstring(jni, path, pathstr); | |
3a2f1a4b MW |
884 | } |
885 | ||
8eabb4ff MW |
886 | JNIEXPORT void JNIFUNC(rmdir)(JNIEnv *jni, jobject cls, jobject path) |
887 | { | |
888 | const char *pathstr = 0; | |
3a2f1a4b | 889 | |
8eabb4ff MW |
890 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
891 | if (rmdir(pathstr)) { | |
892 | except_syserror(jni, SYSERR, errno, | |
893 | "failed to delete directory `%s'", pathstr); | |
894 | goto end; | |
895 | } | |
896 | end: | |
897 | put_cstring(jni, path, pathstr); | |
898 | } | |
899 | ||
900 | JNIEXPORT void JNIFUNC(mkdir)(JNIEnv *jni, jobject cls, | |
901 | jobject path, jint mode) | |
3a2f1a4b | 902 | { |
8eabb4ff MW |
903 | const char *pathstr = 0; |
904 | ||
905 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
906 | if (mkdir(pathstr, mode)) { | |
907 | except_syserror(jni, SYSERR, errno, | |
908 | "failed to create directory `%s'", pathstr); | |
909 | goto end; | |
910 | } | |
911 | end: | |
912 | put_cstring(jni, path, pathstr); | |
3a2f1a4b MW |
913 | } |
914 | ||
8eabb4ff MW |
915 | JNIEXPORT void JNIFUNC(mkfile)(JNIEnv *jni, jobject cls, |
916 | jobject path, jint mode) | |
3a2f1a4b | 917 | { |
8eabb4ff MW |
918 | const char *pathstr = 0; |
919 | int fd = -1; | |
3a2f1a4b | 920 | |
8eabb4ff MW |
921 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
922 | fd = open(pathstr, O_WRONLY | O_CREAT | O_EXCL, mode); | |
923 | if (fd < 0) { | |
924 | except_syserror(jni, SYSERR, errno, | |
925 | "failed to create fresh file `%s'", pathstr); | |
926 | goto end; | |
3a2f1a4b | 927 | } |
8eabb4ff MW |
928 | end: |
929 | if (fd != -1) close(fd); | |
930 | put_cstring(jni, path, pathstr); | |
3a2f1a4b MW |
931 | } |
932 | ||
8eabb4ff MW |
933 | JNIEXPORT void JNIFUNC(rename)(JNIEnv *jni, jobject cls, |
934 | jobject from, jobject to) | |
3a2f1a4b | 935 | { |
8eabb4ff MW |
936 | const char *fromstr = 0, *tostr = 0; |
937 | ||
938 | fromstr = get_cstring(jni, from); if (!fromstr) goto end; | |
939 | tostr = get_cstring(jni, to); if (!tostr) goto end; | |
940 | if (rename(fromstr, tostr)) { | |
941 | except_syserror(jni, SYSERR, errno, | |
942 | "failed to rename `%s' as `%s'", fromstr, tostr); | |
943 | goto end; | |
944 | } | |
945 | end: | |
946 | put_cstring(jni, from, fromstr); | |
947 | put_cstring(jni, to, tostr); | |
3a2f1a4b MW |
948 | } |
949 | ||
c8292b34 MW |
950 | #define LKF_EXCL 0x1000u |
951 | #define LKF_WAIT 0x2000u | |
8eabb4ff MW |
952 | struct lockf { |
953 | struct native_base _base; | |
954 | int fd; | |
955 | }; | |
956 | static struct native_type lockf_type = | |
957 | { "lock", sizeof(struct lockf), 0xb2648926}; | |
958 | JNIEXPORT wrapper JNIFUNC(lock)(JNIEnv *jni, jobject cls, | |
959 | jobject path, jint flags) | |
960 | { | |
961 | const char *pathstr = 0; | |
962 | int fd = -1; | |
963 | struct flock l; | |
964 | struct lockf lk; | |
965 | struct stat st0, st1; | |
966 | int f; | |
967 | wrapper r = 0; | |
968 | ||
969 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
970 | ||
971 | again: | |
c8292b34 | 972 | fd = open(pathstr, O_RDWR | O_CREAT, flags&07777); if (fd < 0) goto err; |
8eabb4ff MW |
973 | if (fstat(fd, &st0)) goto err; |
974 | f = fcntl(fd, F_GETFD); if (f < 0) goto err; | |
975 | if (fcntl(fd, F_SETFD, f | FD_CLOEXEC)) goto err; | |
976 | l.l_type = (flags&LKF_EXCL) ? F_WRLCK : F_RDLCK; | |
977 | l.l_whence = SEEK_SET; | |
978 | l.l_start = 0; | |
979 | l.l_len = 0; | |
980 | if (fcntl(fd, (flags&LKF_WAIT) ? F_SETLKW : F_SETLK, &l)) goto err; | |
981 | if (stat(pathstr, &st1)) | |
982 | { if (errno == ENOENT) goto again; else goto err; } | |
983 | if (st0.st_dev != st1.st_dev || st0.st_ino != st1.st_ino) | |
984 | { close(fd); fd = -1; goto again; } | |
985 | ||
986 | INIT_NATIVE(lockf, &lk); lk.fd = fd; fd = -1; | |
987 | r = wrap(jni, &lockf_type, &lk); | |
988 | goto end; | |
989 | ||
990 | err: | |
991 | except_syserror(jni, SYSERR, errno, "failed to lock file `%s'", pathstr); | |
992 | end: | |
993 | if (fd != -1) close(fd); | |
994 | put_cstring(jni, path, pathstr); | |
995 | return (r); | |
996 | } | |
997 | ||
998 | JNIEXPORT void JNIFUNC(unlock)(JNIEnv *jni, jobject cls, wrapper wlk) | |
999 | { | |
1000 | struct lockf lk; | |
1001 | struct flock l; | |
1002 | int rc; | |
1003 | ||
1004 | if (unwrap(jni, &lk, &lockf_type, wlk)) goto end; | |
1005 | if (lk.fd == -1) goto end; | |
1006 | l.l_type = F_UNLCK; | |
1007 | l.l_whence = SEEK_SET; | |
1008 | l.l_start = 0; | |
1009 | l.l_len = 0; | |
1010 | if (fcntl(lk.fd, F_SETLK, &l)) goto end; | |
1011 | close(lk.fd); lk.fd = -1; | |
1012 | rc = update_wrapper(jni, &lockf_type, wlk, &lk); assert(!rc); | |
1013 | end:; | |
1014 | } | |
1015 | ||
1016 | static jlong xlttimespec(const struct timespec *ts) | |
1017 | { return (1000*(jlong)ts->tv_sec + ts->tv_nsec/1000000); } | |
1018 | ||
1019 | static jobject xltstat(JNIEnv *jni, const struct stat *st) | |
1020 | { | |
1021 | jclass cls; | |
1022 | jmethodID init; | |
1023 | jint modehack; | |
c8292b34 | 1024 | |
8eabb4ff MW |
1025 | modehack = st->st_mode&07777; |
1026 | if (S_ISFIFO(st->st_mode)) modehack |= 0010000; | |
1027 | else if (S_ISCHR(st->st_mode)) modehack |= 0020000; | |
1028 | else if (S_ISDIR(st->st_mode)) modehack |= 0040000; | |
1029 | else if (S_ISBLK(st->st_mode)) modehack |= 0060000; | |
1030 | else if (S_ISREG(st->st_mode)) modehack |= 0100000; | |
1031 | else if (S_ISLNK(st->st_mode)) modehack |= 0120000; | |
1032 | else if (S_ISSOCK(st->st_mode)) modehack |= 0140000; | |
1033 | ||
3bb2303d | 1034 | cls = (*jni)->FindClass(jni, STATCLS); assert(cls); |
8eabb4ff MW |
1035 | init = (*jni)->GetMethodID(jni, cls, "<init>", "(IIJIIIIIIJIJJJJ)V"); |
1036 | assert(init); | |
1037 | return ((*jni)->NewObject(jni, cls, init, | |
1038 | (jint)major(st->st_dev), (jint)minor(st->st_dev), | |
1039 | (jlong)st->st_ino, | |
1040 | modehack, | |
1041 | (jint)st->st_nlink, | |
1042 | (jint)st->st_uid, (jint)st->st_gid, | |
1043 | (jint)major(st->st_rdev), (jint)minor(st->st_rdev), | |
1044 | (jlong)st->st_size, | |
1045 | (jint)st->st_blksize, (jlong)st->st_blocks, | |
1046 | xlttimespec(&st->st_atim), | |
1047 | xlttimespec(&st->st_mtim), | |
1048 | xlttimespec(&st->st_ctim))); | |
1049 | } | |
1050 | ||
1051 | JNIEXPORT jobject JNIFUNC(stat)(JNIEnv *jni, jobject cls, jobject path) | |
3a2f1a4b | 1052 | { |
8eabb4ff MW |
1053 | jobject r = 0; |
1054 | const char *pathstr = 0; | |
1055 | struct stat st; | |
1056 | ||
1057 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
1058 | if (stat(pathstr, &st)) { | |
1059 | except_syserror(jni, SYSERR, errno, | |
1060 | "failed to read information about `%s'", pathstr); | |
1061 | goto end; | |
1062 | } | |
1063 | r = xltstat(jni, &st); | |
1064 | end: | |
1065 | put_cstring(jni, path, pathstr); | |
1066 | return (r); | |
3a2f1a4b MW |
1067 | } |
1068 | ||
8eabb4ff MW |
1069 | JNIEXPORT jobject JNIFUNC(lstat)(JNIEnv *jni, jobject cls, jobject path) |
1070 | { | |
1071 | jobject r = 0; | |
1072 | const char *pathstr = 0; | |
1073 | struct stat st; | |
3a2f1a4b | 1074 | |
8eabb4ff MW |
1075 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
1076 | if (lstat(pathstr, &st)) { | |
1077 | except_syserror(jni, SYSERR, errno, | |
1078 | "failed to read information about `%s'", pathstr); | |
1079 | goto end; | |
1080 | } | |
1081 | r = xltstat(jni, &st); | |
1082 | end: | |
1083 | put_cstring(jni, path, pathstr); | |
1084 | return (r); | |
1085 | } | |
1086 | ||
1087 | struct dir { | |
1088 | struct native_base _base; | |
1089 | DIR *d; | |
3a2f1a4b | 1090 | }; |
8eabb4ff MW |
1091 | static const struct native_type dir_type = |
1092 | { "dir", sizeof(struct dir), 0x0f5ca477 }; | |
3a2f1a4b | 1093 | |
8eabb4ff | 1094 | JNIEXPORT jobject JNIFUNC(opendir)(JNIEnv *jni, jobject cls, jobject path) |
3a2f1a4b | 1095 | { |
8eabb4ff MW |
1096 | const char *pathstr = 0; |
1097 | struct dir dir; | |
1098 | wrapper r = 0; | |
3a2f1a4b | 1099 | |
8eabb4ff MW |
1100 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
1101 | INIT_NATIVE(dir, &dir); | |
1102 | dir.d = opendir(pathstr); | |
1103 | if (!dir.d) { | |
1104 | except_syserror(jni, SYSERR, errno, | |
1105 | "failed to open directory `%s'", pathstr); | |
1106 | goto end; | |
1107 | } | |
1108 | r = wrap(jni, &dir_type, &dir); | |
1109 | end: | |
1110 | put_cstring(jni, path, pathstr); | |
1111 | return (r); | |
3a2f1a4b MW |
1112 | } |
1113 | ||
8eabb4ff MW |
1114 | JNIEXPORT jbyteArray JNIFUNC(readdir)(JNIEnv *jni, jobject cls, |
1115 | jobject path, jobject wdir) | |
3a2f1a4b | 1116 | { |
8eabb4ff MW |
1117 | const char *pathstr = 0; |
1118 | struct dir dir; | |
1119 | struct dirent *d; | |
1120 | jbyteArray r = 0; | |
3a2f1a4b | 1121 | |
8eabb4ff MW |
1122 | if (unwrap(jni, &dir, &dir_type, wdir)) goto end; |
1123 | if (!dir.d) { except(jni, ARGERR, "directory has been closed"); goto end; } | |
1124 | errno = 0; d = readdir(dir.d); | |
1125 | if (errno) { | |
1126 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
1127 | except_syserror(jni, SYSERR, errno, | |
1128 | "failed to read directory `%s'", pathstr); | |
1129 | goto end; | |
1130 | } | |
1131 | if (d) r = wrap_cstring(jni, d->d_name); | |
1132 | end: | |
1133 | put_cstring(jni, path, pathstr); | |
1134 | return (r); | |
1135 | } | |
1136 | ||
1137 | JNIEXPORT void JNIFUNC(closedir)(JNIEnv *jni, jobject cls, | |
1138 | jobject path, jobject wdir) | |
1139 | { | |
1140 | const char *pathstr = 0; | |
1141 | struct dir dir; | |
1142 | ||
1143 | if (unwrap(jni, &dir, &dir_type, wdir)) goto end; | |
1144 | if (!dir.d) goto end; | |
1145 | if (closedir(dir.d)) { | |
1146 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
1147 | except_syserror(jni, SYSERR, errno, | |
1148 | "failed to close directory `%s'", pathstr); | |
1149 | goto end; | |
1150 | } | |
1151 | dir.d = 0; | |
1152 | if (update_wrapper(jni, &dir_type, wdir, &dir)) goto end; | |
1153 | end: | |
1154 | put_cstring(jni, path, pathstr); | |
3a2f1a4b MW |
1155 | } |
1156 | ||
04a5abae MW |
1157 | /*----- Triggers ----------------------------------------------------------*/ |
1158 | ||
1159 | /* A trigger is a gadget for waking up a thread which is blocking on I/O, | |
1160 | * and it's used to implement interruptability. | |
1161 | * | |
1162 | * Really, a trigger is a pipe. A `blocking' I/O operation secretly uses | |
1163 | * select(2) to block on the descriptor of interest /and/ the read side of | |
1164 | * the trigger pipe. To wake up a thread that's blocked, we just write a | |
1165 | * byte (nobody cares /which/ byte) to the write end. | |
1166 | */ | |
1167 | ||
1168 | struct trigger { | |
1169 | struct native_base _base; | |
1170 | int rfd, wfd; | |
1171 | }; | |
1172 | static const struct native_type trigger_type = | |
1173 | { "trigger", sizeof(struct trigger), 0x65ffd8b4 }; | |
1174 | ||
3bb2303d | 1175 | JNIEXPORT wrapper JNICALL JNIFUNC(make_1trigger)(JNIEnv *jni, jobject cls) |
04a5abae MW |
1176 | { |
1177 | struct trigger trig; | |
1178 | int fd[2]; | |
1179 | int i; | |
1180 | wrapper ret = 0; | |
1181 | ||
1182 | fd[0] = fd[1] = -1; | |
1183 | if (pipe(fd)) { | |
1184 | except_syserror(jni, SYSERR, errno, "failed to create pipe"); | |
1185 | goto end; | |
1186 | } | |
1187 | for (i = 0; i < 2; i++) { | |
1188 | if (set_nonblocking(jni, fd[i], 1) < 0 || set_closeonexec(jni, fd[i])) | |
1189 | goto end; | |
1190 | } | |
1191 | ||
1192 | INIT_NATIVE(trigger, &trig); | |
1193 | trig.rfd = fd[0]; fd[0] = -1; | |
1194 | trig.wfd = fd[1]; fd[1] = -1; | |
1195 | ret = wrap(jni, &trigger_type, &trig); | |
1196 | ||
1197 | end: | |
1198 | for (i = 0; i < 2; i++) | |
1199 | if (fd[i] != -1) close(fd[i]); | |
1200 | return (ret); | |
1201 | } | |
1202 | ||
3bb2303d MW |
1203 | JNIEXPORT void JNICALL JNIFUNC(destroy_1trigger)(JNIEnv *jni, jobject cls, |
1204 | wrapper wtrig) | |
04a5abae MW |
1205 | { |
1206 | struct trigger trig; | |
1207 | ||
1208 | if (unwrap(jni, &trig, &trigger_type, wtrig)) return; | |
1209 | if (trig.rfd != -1) { close(trig.rfd); trig.rfd = -1; } | |
1210 | if (trig.wfd != -1) { close(trig.wfd); trig.wfd = -1; } | |
1211 | update_wrapper(jni, &trigger_type, wtrig, &trig); | |
1212 | } | |
1213 | ||
3bb2303d MW |
1214 | JNIEXPORT void JNICALL JNIFUNC(reset_1trigger)(JNIEnv *jni, jobject cls, |
1215 | wrapper wtrig) | |
04a5abae MW |
1216 | { |
1217 | struct trigger trig; | |
1218 | char buf[64]; | |
1219 | ssize_t n; | |
1220 | ||
1221 | if (unwrap(jni, &trig, &trigger_type, wtrig)) return; | |
1222 | for (;;) { | |
1223 | n = read(trig.rfd, buf, sizeof(buf)); | |
1224 | if (n > 0) continue; | |
1225 | assert(n < 0); | |
1226 | if (errno == EAGAIN || errno == EWOULDBLOCK) break; | |
1227 | else { | |
1228 | except_syserror(jni, SYSERR, errno, "failed to reset trigger"); | |
1229 | break; | |
1230 | } | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | JNIEXPORT void JNICALL JNIFUNC(trigger)(JNIEnv *jni, jobject cls, | |
1235 | wrapper wtrig) | |
1236 | { | |
1237 | struct trigger trig; | |
1238 | ssize_t n; | |
1239 | char c = 0; | |
1240 | ||
1241 | if (unwrap(jni, &trig, &trigger_type, wtrig)) return; | |
1242 | n = write(trig.wfd, &c, 1); | |
1243 | if (n < 0 && errno != EAGAIN && errno != EWOULDBLOCK) | |
1244 | except_syserror(jni, SYSERR, errno, "failed to pull trigger"); | |
1245 | } | |
1246 | ||
3bb2303d | 1247 | /*----- A tunnel supplied by Java -----------------------------------------*/ |
8eabb4ff | 1248 | |
3bb2303d MW |
1249 | struct tunnel { |
1250 | const tunnel_ops *ops; | |
1251 | sel_file f; | |
1252 | struct peer *p; | |
3a2f1a4b | 1253 | }; |
3a2f1a4b | 1254 | |
3bb2303d MW |
1255 | static const struct tunnel_ops tun_java; |
1256 | ||
1257 | static int t_init(void) { return (0); } | |
1258 | ||
1259 | static void t_read(int fd, unsigned mode, void *v) | |
3a2f1a4b | 1260 | { |
3bb2303d MW |
1261 | tunnel *t = v; |
1262 | ssize_t n; | |
1263 | buf b; | |
3a2f1a4b | 1264 | |
3bb2303d MW |
1265 | n = read(fd, buf_i, sizeof(buf_i)); |
1266 | if (n < 0) { | |
1267 | a_warn("TUN", "%s", p_ifname(t->p), "java", | |
1268 | "read-error", "?ERRNO", A_END); | |
1269 | return; | |
1270 | } | |
1271 | IF_TRACING(T_TUNNEL, { | |
1272 | trace(T_TUNNEL, "tun-java: packet arrived"); | |
1273 | trace_block(T_PACKET, "tunnel: packet contents", buf_i, n); | |
1274 | }) | |
1275 | buf_init(&b, buf_i, n); | |
1276 | p_tun(t->p, &b); | |
1277 | } | |
1278 | ||
1279 | static tunnel *t_create(peer *p, int fd, char **ifn) | |
1280 | { | |
1281 | JNIEnv *jni = jni_tripe; | |
1282 | tunnel *t = 0; | |
1283 | const char *name = p_name(p); | |
1284 | jbyteArray jname; | |
1285 | size_t n = strlen(p_name(p)); | |
1286 | jclass cls, metacls; | |
1287 | jstring jclsname, jexcmsg; | |
1288 | const char *clsname, *excmsg; | |
1289 | jmethodID mid; | |
1290 | jthrowable exc; | |
1291 | ||
1292 | assert(jni); | |
1293 | ||
1294 | jname = wrap_cstring(jni, name); | |
1295 | cls = (*jni)->FindClass(jni, SYSCLS); assert(cls); | |
1296 | mid = (*jni)->GetStaticMethodID(jni, cls, "getTunnelFd", "([B)I"); | |
1297 | assert(mid); | |
1298 | fd = (*jni)->CallStaticIntMethod(jni, cls, mid, jname); | |
1299 | ||
1300 | exc = (*jni)->ExceptionOccurred(jni); | |
1301 | if (exc) { | |
1302 | cls = (*jni)->GetObjectClass(jni, exc); | |
1303 | metacls = (*jni)->GetObjectClass(jni, cls); | |
1304 | mid = (*jni)->GetMethodID(jni, metacls, | |
1305 | "getName", "()L"STRCLS";"); | |
1306 | assert(mid); | |
1307 | jclsname = (*jni)->CallObjectMethod(jni, cls, mid); | |
1308 | clsname = (*jni)->GetStringUTFChars(jni, jclsname, 0); | |
1309 | mid = (*jni)->GetMethodID(jni, cls, | |
1310 | "getMessage", "()L"STRCLS";"); | |
1311 | jexcmsg = (*jni)->CallObjectMethod(jni, exc, mid); | |
1312 | excmsg = (*jni)->GetStringUTFChars(jni, jexcmsg, 0); | |
1313 | a_warn("TUN", "-", "java", "get-tunnel-fd-failed", | |
1314 | "%s", clsname, "%s", excmsg, A_END); | |
1315 | (*jni)->ReleaseStringUTFChars(jni, jclsname, clsname); | |
1316 | (*jni)->ReleaseStringUTFChars(jni, jexcmsg, excmsg); | |
1317 | (*jni)->ExceptionClear(jni); | |
8eabb4ff MW |
1318 | goto end; |
1319 | } | |
3a2f1a4b | 1320 | |
3bb2303d MW |
1321 | t = CREATE(tunnel); |
1322 | t->ops = &tun_java; | |
1323 | t->p = p; | |
1324 | sel_initfile(&sel, &t->f, fd, SEL_READ, t_read, t); | |
3a2f1a4b | 1325 | |
3bb2303d MW |
1326 | if (!*ifn) { |
1327 | *ifn = xmalloc(n + 5); | |
1328 | sprintf(*ifn, "vpn-%s", name); | |
1329 | } | |
04a5abae | 1330 | |
3bb2303d MW |
1331 | end: |
1332 | return (t); | |
1333 | } | |
1334 | ||
1335 | static void t_inject(tunnel *t, buf *b) | |
1336 | { | |
1337 | IF_TRACING(T_TUNNEL, { | |
1338 | trace(T_TUNNEL, "tun-java: inject decrypted packet"); | |
1339 | trace_block(T_PACKET, "tunnel: packet contents", BBASE(b), BLEN(b)); | |
1340 | }) | |
1341 | DISCARD(write(t->f.fd, BBASE(b), BLEN(b))); | |
1342 | } | |
1343 | ||
1344 | static void t_destroy(tunnel *t) | |
1345 | { sel_rmfile(&t->f); close(t->f.fd); DESTROY(t); } | |
1346 | ||
1347 | static const struct tunnel_ops tun_java = { | |
1348 | "java", 0, | |
1349 | /* init */ t_init, | |
1350 | /* create */ t_create, | |
1351 | /* setifname */ 0, | |
1352 | /* inject */ t_inject, | |
1353 | /* destroy */ t_destroy | |
1354 | }; | |
1355 | ||
1356 | ||
1357 | JNIEXPORT jint JNICALL JNIFUNC(open_1tun)(JNIEnv *jni, jobject cls) | |
1358 | { | |
1359 | int ret = -1; | |
1360 | int fd = -1; | |
1361 | struct ifreq iff; | |
1362 | ||
1363 | if ((fd = open("/dev/net/tun", O_RDWR)) < 0) { | |
1364 | except_syserror(jni, SYSERR, errno, "failed to open tunnel device"); | |
1365 | goto end; | |
04a5abae | 1366 | } |
3a2f1a4b | 1367 | |
3bb2303d MW |
1368 | if (set_nonblocking(jni, fd, 1) || set_closeonexec(jni, fd)) goto end; |
1369 | ||
1370 | memset(&iff, 0, sizeof(iff)); | |
1371 | iff.ifr_name[0] = 0; | |
1372 | iff.ifr_flags = IFF_TUN | IFF_NO_PI; | |
1373 | if (ioctl(fd, TUNSETIFF, &iff) < 0) { | |
1374 | except_syserror(jni, SYSERR, errno, "failed to configure tunnel device"); | |
1375 | goto end; | |
1376 | } | |
1377 | ||
1378 | ret = fd; fd = -1; | |
3a2f1a4b | 1379 | |
8eabb4ff | 1380 | end: |
04a5abae | 1381 | if (fd != -1) close(fd); |
8eabb4ff | 1382 | return (ret); |
3a2f1a4b MW |
1383 | } |
1384 | ||
3bb2303d MW |
1385 | /*----- A custom noise source ---------------------------------------------*/ |
1386 | ||
1387 | static void javanoise(rand_pool *r) | |
1388 | { | |
1389 | JNIEnv *jni = jni_tripe; | |
1390 | jclass cls; | |
1391 | jmethodID mid; | |
1392 | jbyteArray v; | |
1393 | jbyte *p; | |
1394 | jsize n; | |
1395 | ||
1396 | noise_devrandom(r); | |
1397 | ||
1398 | assert(jni); | |
1399 | cls = (*jni)->FindClass(jni, RANDCLS); assert(cls); | |
1400 | mid = (*jni)->GetStaticMethodID(jni, cls, "getSeed", "(I)[B"); assert(mid); | |
1401 | v = (*jni)->CallStaticObjectMethod(jni, cls, mid, 32); | |
1402 | if (v) { | |
1403 | n = (*jni)->GetArrayLength(jni, v); | |
1404 | p = (*jni)->GetByteArrayElements(jni, v, 0); | |
1405 | rand_add(r, p, n, n); | |
1406 | (*jni)->ReleaseByteArrayElements(jni, v, p, JNI_ABORT); | |
1407 | } | |
1408 | if ((*jni)->ExceptionOccurred(jni)) { | |
1409 | (*jni)->ExceptionDescribe(jni); | |
1410 | (*jni)->ExceptionClear(jni); | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | static const rand_source javasource = { javanoise, noise_timer }; | |
1415 | ||
1416 | /*----- Embedding the TrIPE server ----------------------------------------*/ | |
1417 | ||
1418 | static void lock_tripe(JNIEnv *jni) | |
1419 | { | |
1420 | jclass cls = (*jni)->FindClass(jni, LOCKCLS); assert(cls); | |
1421 | (*jni)->MonitorEnter(jni, cls); | |
1422 | } | |
1423 | ||
1424 | static void unlock_tripe(JNIEnv *jni) | |
1425 | { | |
1426 | jclass cls = (*jni)->FindClass(jni, LOCKCLS); assert(cls); | |
1427 | (*jni)->MonitorExit(jni, cls); | |
1428 | } | |
1429 | ||
1430 | #define STATES(_) \ | |
1431 | _(INIT) \ | |
1432 | _(RESOLVE) \ | |
1433 | _(KEYS) \ | |
1434 | _(BIND) \ | |
1435 | _(READY) \ | |
1436 | _(RUNNING) | |
1437 | ||
1438 | enum { | |
1439 | #define DEFTAG(st) st, | |
1440 | STATES(DEFTAG) | |
1441 | #undef DEFTAG | |
1442 | MAXSTATE | |
1443 | }; | |
1444 | ||
1445 | static const char *statetab[] = { | |
1446 | #define DEFNAME(st) #st, | |
1447 | STATES(DEFNAME) | |
1448 | #undef DEFNAME | |
1449 | }; | |
1450 | ||
1451 | static unsigned state = INIT; | |
1452 | static int clientsk = -1; | |
1453 | ||
1454 | static const char *statename(unsigned st) | |
1455 | { | |
1456 | if (st >= MAXSTATE) return ("<invalid>"); | |
1457 | else return (statetab[st]); | |
1458 | } | |
1459 | ||
1460 | static int ensure_state(JNIEnv *jni, unsigned want) | |
1461 | { | |
1462 | unsigned cur; | |
1463 | ||
1464 | lock_tripe(jni); | |
1465 | cur = state; | |
1466 | unlock_tripe(jni); | |
1467 | ||
1468 | if (cur != want) { | |
1469 | except(jni, STERR, "server is in state %s (%u), not %s (%u)", | |
1470 | statename(cur), cur, statename(want), want); | |
1471 | return (-1); | |
1472 | } | |
1473 | return (0); | |
1474 | } | |
1475 | ||
1476 | JNIEXPORT void JNICALL JNIFUNC(base_1init)(JNIEnv *jni, jobject cls) | |
1477 | { | |
1478 | int fd[2]; | |
1479 | int i; | |
1480 | ||
1481 | for (i = 0; i < N(fd); i++) fd[i] = -1; | |
1482 | ||
1483 | lock_tripe(jni); | |
1484 | jni_tripe = jni; | |
1485 | if (ensure_state(jni, INIT)) goto end; | |
1486 | ||
1487 | if (socketpair(PF_UNIX, SOCK_STREAM, 0, fd)) { | |
1488 | except_syserror(jni, SYSERR, errno, "failed to create socket pair"); | |
1489 | goto end; | |
1490 | } | |
1491 | ||
1492 | clientsk = fd[0]; fd[0] = -1; | |
1493 | ||
1494 | rand_noisesrc(RAND_GLOBAL, &javasource); | |
1495 | rand_seed(RAND_GLOBAL, MAXHASHSZ); | |
1496 | lp_init(); | |
1497 | a_create(fd[1], fd[1], AF_NOTE | AF_WARN | AF_TRACE); fd[1] = -1; | |
1498 | a_switcherr(); | |
1499 | p_addtun(&tun_java); p_setdflttun(&tun_java); | |
1500 | p_init(); | |
1501 | kx_init(); | |
1502 | ||
1503 | state++; | |
1504 | ||
1505 | end: | |
1506 | for (i = 0; i < N(fd); i++) if (fd[i] != -1) close(fd[i]); | |
1507 | jni_tripe = 0; | |
1508 | unlock_tripe(jni); | |
1509 | } | |
1510 | ||
1511 | JNIEXPORT void JNICALL JNIFUNC(setup_1resolver)(JNIEnv *jni, jobject cls) | |
1512 | { | |
1513 | lock_tripe(jni); | |
1514 | if (ensure_state(jni, RESOLVE)) goto end; | |
1515 | ||
1516 | if (a_init()) | |
1517 | { except(jni, INITERR, "failed to initialize resolver"); return; } | |
1518 | ||
1519 | state++; | |
1520 | ||
1521 | end: | |
1522 | unlock_tripe(jni); | |
1523 | } | |
1524 | ||
1525 | JNIEXPORT void JNICALL JNIFUNC(load_1keys)(JNIEnv *jni, jobject cls, | |
1526 | jobject privstr, jobject pubstr, | |
1527 | jobject tagstr) | |
1528 | { | |
1529 | const char *priv = 0, *pub = 0, *tag = 0; | |
1530 | ||
1531 | lock_tripe(jni); | |
1532 | if (ensure_state(jni, KEYS)) return; | |
1533 | ||
1534 | priv = get_cstring(jni, privstr); if (!priv) goto end; | |
1535 | pub = get_cstring(jni, pubstr); if (!pub) goto end; | |
1536 | tag = get_cstring(jni, tagstr); if (!tag) goto end; | |
1537 | ||
1538 | if (km_init(priv, pub, tag)) | |
1539 | { except(jni, INITERR, "failed to load initial keys"); goto end; } | |
1540 | ||
1541 | state++; | |
1542 | ||
1543 | end: | |
1544 | put_cstring(jni, privstr, priv); | |
1545 | put_cstring(jni, pubstr, pub); | |
1546 | put_cstring(jni, tagstr, tag); | |
1547 | unlock_tripe(jni); | |
1548 | } | |
1549 | ||
1550 | JNIEXPORT void JNICALL JNIFUNC(unload_1keys)(JNIEnv *jni, jobject cls) | |
1551 | { | |
1552 | lock_tripe(jni); | |
1553 | if (ensure_state(jni, KEYS + 1)) goto end; | |
1554 | ||
1555 | km_clear(); | |
1556 | ||
1557 | state--; | |
1558 | ||
1559 | end: | |
1560 | unlock_tripe(jni); | |
1561 | } | |
1562 | ||
1563 | JNIEXPORT void JNICALL JNIFUNC(bind)(JNIEnv *jni, jobject cls, | |
1564 | jbyteArray hoststr, jbyteArray svcstr) | |
1565 | { | |
1566 | const char *host = 0, *svc = 0; | |
1567 | struct addrinfo hint, *ai = 0; | |
1568 | int err; | |
1569 | ||
1570 | lock_tripe(jni); | |
1571 | if (ensure_state(jni, BIND)) goto end; | |
1572 | ||
1573 | if (hoststr) { host = get_cstring(jni, hoststr); if (!host) goto end; } | |
1574 | svc = get_cstring(jni, svcstr); if (!svc) goto end; | |
1575 | ||
1576 | hint.ai_socktype = SOCK_DGRAM; | |
1577 | hint.ai_family = AF_UNSPEC; | |
1578 | hint.ai_protocol = IPPROTO_UDP; | |
1579 | hint.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; | |
1580 | err = getaddrinfo(host, svc, &hint, &ai); | |
1581 | if (err) { | |
1582 | except(jni, NAMEERR, "failed to resolve %c%s%c, port `%s': %s", | |
1583 | host ? '`' : '<', host ? host : "nil", host ? '\'' : '>', | |
1584 | svc, gai_strerror(err)); | |
1585 | goto end; | |
1586 | } | |
1587 | ||
1588 | if (p_bind(ai)) | |
1589 | { except(jni, INITERR, "failed to bind master socket"); goto end; } | |
1590 | ||
1591 | state++; | |
1592 | ||
1593 | end: | |
1594 | if (ai) freeaddrinfo(ai); | |
1595 | put_cstring(jni, hoststr, host); | |
1596 | put_cstring(jni, svcstr, svc); | |
1597 | unlock_tripe(jni); | |
1598 | } | |
1599 | ||
1600 | JNIEXPORT void JNICALL JNIFUNC(unbind)(JNIEnv *jni, jobject cls) | |
1601 | { | |
1602 | lock_tripe(jni); | |
1603 | if (ensure_state(jni, BIND + 1)) goto end; | |
1604 | ||
1605 | p_unbind(); | |
1606 | ||
1607 | state--; | |
1608 | ||
1609 | end: | |
1610 | unlock_tripe(jni); | |
1611 | } | |
1612 | ||
1613 | JNIEXPORT void JNICALL JNIFUNC(mark)(JNIEnv *jni, jobject cls, jint seq) | |
1614 | { | |
1615 | lock_tripe(jni); | |
1616 | a_notify("MARK", "%d", seq, A_END); | |
1617 | unlock_tripe(jni); | |
1618 | } | |
1619 | ||
1620 | JNIEXPORT void JNICALL JNIFUNC(run)(JNIEnv *jni, jobject cls) | |
1621 | { | |
1622 | lock_tripe(jni); | |
1623 | if (ensure_state(jni, READY)) goto end; | |
1624 | assert(!jni_tripe); | |
1625 | jni_tripe = jni; | |
1626 | state = RUNNING; | |
1627 | unlock_tripe(jni); | |
1628 | ||
1629 | lp_run(); | |
1630 | ||
1631 | lock_tripe(jni); | |
1632 | jni_tripe = 0; | |
1633 | state = READY; | |
1634 | ||
1635 | end: | |
1636 | unlock_tripe(jni); | |
1637 | } | |
1638 | ||
8eabb4ff MW |
1639 | static int check_buffer_bounds(JNIEnv *jni, const char *what, |
1640 | jbyteArray buf, jint start, jint len) | |
3a2f1a4b | 1641 | { |
3a2f1a4b | 1642 | jsize bufsz; |
8eabb4ff | 1643 | jclass cls; |
3a2f1a4b | 1644 | |
8eabb4ff MW |
1645 | cls = (*jni)->FindClass(jni, "[B"); assert(cls); |
1646 | if (!(*jni)->IsInstanceOf(jni, buf, cls)) { | |
1647 | except(jni, ARGERR, | |
1648 | "expected a byte array"); | |
1649 | return (-1); | |
1650 | } | |
3a2f1a4b | 1651 | bufsz = (*jni)->GetArrayLength(jni, buf); |
8eabb4ff MW |
1652 | if (start > bufsz) { |
1653 | except(jni, BOUNDSERR, | |
1654 | "bad %s buffer bounds: start %d > buffer size %d", start, bufsz); | |
1655 | return (-1); | |
1656 | } | |
1657 | if (len > bufsz - start) { | |
1658 | except(jni, BOUNDSERR, | |
1659 | "bad %s buffer bounds: length %d > remaining buffer size %d", | |
1660 | len, bufsz - start); | |
1661 | return (-1); | |
3a2f1a4b | 1662 | } |
8eabb4ff MW |
1663 | return (0); |
1664 | } | |
1665 | ||
1666 | JNIEXPORT void JNICALL JNIFUNC(send)(JNIEnv *jni, jobject cls, | |
3bb2303d | 1667 | jbyteArray buf, |
04a5abae MW |
1668 | jint start, jint len, |
1669 | wrapper wtrig) | |
8eabb4ff | 1670 | { |
04a5abae MW |
1671 | struct trigger trig; |
1672 | int rc, maxfd; | |
8eabb4ff | 1673 | ssize_t n; |
04a5abae | 1674 | fd_set rfds, wfds; |
8eabb4ff MW |
1675 | jbyte *p = 0; |
1676 | ||
3bb2303d MW |
1677 | if (ensure_state(jni, RUNNING)) goto end; |
1678 | ||
04a5abae | 1679 | if (unwrap(jni, &trig, &trigger_type, wtrig)) goto end; |
8eabb4ff | 1680 | if (check_buffer_bounds(jni, "send", buf, start, len)) goto end; |
3a2f1a4b | 1681 | |
8eabb4ff | 1682 | p = (*jni)->GetByteArrayElements(jni, buf, 0); |
3a2f1a4b MW |
1683 | if (!p) goto end; |
1684 | ||
04a5abae | 1685 | maxfd = trig.rfd; |
3bb2303d | 1686 | if (maxfd < clientsk) maxfd = clientsk; |
3a2f1a4b | 1687 | while (len) { |
04a5abae | 1688 | FD_ZERO(&rfds); FD_SET(trig.rfd, &rfds); |
3bb2303d | 1689 | FD_ZERO(&wfds); FD_SET(clientsk, &wfds); |
04a5abae MW |
1690 | rc = select(maxfd + 1, &rfds, &wfds, 0, 0); if (rc < 0) goto err; |
1691 | if (FD_ISSET(trig.rfd, &rfds)) break; | |
3bb2303d MW |
1692 | if (FD_ISSET(clientsk, &wfds)) { |
1693 | n = send(clientsk, p + start, len, 0); | |
04a5abae MW |
1694 | if (n >= 0) { start += n; len -= n; } |
1695 | else if (errno != EAGAIN && errno != EWOULDBLOCK) goto err; | |
3a2f1a4b | 1696 | } |
3a2f1a4b | 1697 | } |
04a5abae | 1698 | goto end; |
3a2f1a4b | 1699 | |
04a5abae MW |
1700 | err: |
1701 | except_syserror(jni, SYSERR, errno, "failed to send on connection"); | |
3a2f1a4b MW |
1702 | end: |
1703 | if (p) (*jni)->ReleaseByteArrayElements(jni, buf, p, JNI_ABORT); | |
3a2f1a4b MW |
1704 | return; |
1705 | } | |
1706 | ||
8eabb4ff | 1707 | JNIEXPORT jint JNICALL JNIFUNC(recv)(JNIEnv *jni, jobject cls, |
3bb2303d | 1708 | jbyteArray buf, |
04a5abae MW |
1709 | jint start, jint len, |
1710 | wrapper wtrig) | |
3a2f1a4b | 1711 | { |
04a5abae MW |
1712 | struct trigger trig; |
1713 | int maxfd; | |
1714 | fd_set rfds; | |
3a2f1a4b MW |
1715 | jbyte *p = 0; |
1716 | jint rc = -1; | |
1717 | ||
3bb2303d MW |
1718 | lock_tripe(jni); |
1719 | if (clientsk == -1) { | |
1720 | except(jni, STERR, "client connection not established"); | |
1721 | unlock_tripe(jni); | |
1722 | goto end; | |
1723 | } | |
1724 | unlock_tripe(jni); | |
1725 | ||
04a5abae | 1726 | if (unwrap(jni, &trig, &trigger_type, wtrig)) goto end; |
8eabb4ff | 1727 | if (check_buffer_bounds(jni, "send", buf, start, len)) goto end; |
3a2f1a4b | 1728 | |
8eabb4ff | 1729 | p = (*jni)->GetByteArrayElements(jni, buf, 0); |
3a2f1a4b MW |
1730 | if (!p) goto end; |
1731 | ||
04a5abae | 1732 | maxfd = trig.rfd; |
3bb2303d | 1733 | if (maxfd < clientsk) maxfd = clientsk; |
04a5abae | 1734 | for (;;) { |
3bb2303d | 1735 | FD_ZERO(&rfds); FD_SET(trig.rfd, &rfds); FD_SET(clientsk, &rfds); |
04a5abae MW |
1736 | rc = select(maxfd + 1, &rfds, 0, 0, 0); if (rc < 0) goto err; |
1737 | if (FD_ISSET(trig.rfd, &rfds)) { | |
1738 | break; | |
1739 | } | |
3bb2303d MW |
1740 | if (FD_ISSET(clientsk, &rfds)) { |
1741 | rc = recv(clientsk, p + start, len, 0); | |
04a5abae MW |
1742 | if (rc >= 0) break; |
1743 | else if (errno != EAGAIN && errno != EWOULDBLOCK) goto err; | |
1744 | } | |
3a2f1a4b MW |
1745 | } |
1746 | if (!rc) rc = -1; | |
04a5abae | 1747 | goto end; |
3a2f1a4b | 1748 | |
04a5abae MW |
1749 | err: |
1750 | except_syserror(jni, SYSERR, errno, "failed to read from connection"); | |
3a2f1a4b MW |
1751 | end: |
1752 | if (p) (*jni)->ReleaseByteArrayElements(jni, buf, p, 0); | |
3a2f1a4b MW |
1753 | return (rc); |
1754 | } | |
1755 | ||
8eabb4ff | 1756 | /*----- That's all, folks -------------------------------------------------*/ |