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 | ||
39 | #include <jni.h> | |
40 | ||
41 | #include <sys/types.h> | |
42 | #include <sys/socket.h> | |
8eabb4ff MW |
43 | #include <sys/stat.h> |
44 | #include <sys/sysmacros.h> | |
3a2f1a4b | 45 | #include <sys/un.h> |
8eabb4ff | 46 | #include <fcntl.h> |
3a2f1a4b | 47 | #include <unistd.h> |
8eabb4ff MW |
48 | #include <dirent.h> |
49 | ||
50 | #include <mLib/align.h> | |
51 | #include <mLib/bits.h> | |
52 | #include <mLib/dstr.h> | |
53 | #include <mLib/macros.h> | |
54 | ||
55 | #include <catacomb/ghash.h> | |
3a2f1a4b MW |
56 | |
57 | #undef sun | |
58 | ||
8eabb4ff MW |
59 | /*----- Magic class names and similar -------------------------------------*/ |
60 | ||
61 | /* The name decoration is horrific. Hide it. */ | |
62 | #define JNIFUNC(f) Java_uk_org_distorted_tripe_jni_package_00024_##f | |
63 | ||
64 | /* The little class for bundling up error codes. */ | |
65 | #define ERRENTRY "uk/org/distorted/tripe/jni/package$ErrorEntry" | |
66 | ||
67 | /* The `stat' class. */ | |
68 | #define STAT "uk/org/distorted/tripe/jni/package$FileInfo" | |
69 | ||
70 | /* Exception class names. */ | |
71 | #define NULLERR "java/lang/NullPointerException" | |
72 | #define TYPEERR "uk/org/distorted/tripe/jni/package$NativeObjectTypeException" | |
73 | #define SYSERR "uk/org/distorted/tripe/sys/package$SystemError" | |
74 | #define ARGERR "java/lang/IllegalArgumentException" | |
75 | #define BOUNDSERR "java/lang/IndexOutOfBoundsException" | |
76 | ||
77 | /*----- Miscellaneous utilities -------------------------------------------*/ | |
78 | ||
79 | static void put_cstring(JNIEnv *jni, jbyteArray v, const char *p) | |
80 | { if (p) (*jni)->ReleaseByteArrayElements(jni, v, (jbyte *)p, JNI_ABORT); } | |
81 | ||
82 | static void vexcept(JNIEnv *jni, const char *clsname, | |
83 | const char *msg, va_list ap) | |
84 | { | |
85 | jclass cls; | |
86 | int rc; | |
87 | dstr d = DSTR_INIT; | |
88 | ||
89 | cls = (*jni)->FindClass(jni, clsname); assert(cls); | |
90 | if (!msg) | |
91 | rc = (*jni)->ThrowNew(jni, cls, 0); | |
92 | else { | |
93 | dstr_vputf(&d, msg, &ap); | |
94 | rc = (*jni)->ThrowNew(jni, cls, d.buf); | |
95 | assert(!rc); | |
96 | dstr_destroy(&d); | |
97 | } | |
98 | assert(!rc); | |
99 | } | |
100 | ||
101 | static void except(JNIEnv *jni, const char *clsname, const char *msg, ...) | |
102 | { | |
103 | va_list ap; | |
104 | ||
105 | va_start(ap, msg); | |
106 | vexcept(jni, clsname, msg, ap); | |
107 | va_end(ap); | |
108 | } | |
109 | ||
110 | #ifdef DEBUG | |
111 | static void dump_bytes(const void *p, size_t n, size_t o) | |
112 | { | |
113 | const unsigned char *q = p; | |
114 | size_t i; | |
115 | ||
116 | if (!n) return; | |
117 | for (;;) { | |
118 | fprintf(stderr, ";; %08zx\n", o); | |
119 | for (i = 0; i < 8; i++) | |
120 | if (i < n) fprintf(stderr, "%02x ", q[i]); | |
121 | else fprintf(stderr, "** "); | |
122 | fprintf(stderr, ": "); | |
123 | for (i = 0; i < 8; i++) | |
124 | fputc(i >= n ? '*' : isprint(q[i]) ? q[i] : '.', stderr); | |
125 | fputc('\n', stderr); | |
126 | if (n <= 8) break; | |
127 | q += 8; n -= 8; | |
128 | } | |
129 | } | |
130 | ||
131 | static void dump_byte_array(JNIEnv *jni, const char *what, jbyteArray v) | |
132 | { | |
133 | jsize n; | |
134 | jbyte *p; | |
135 | ||
136 | fprintf(stderr, ";; %s\n", what); | |
137 | if (!v) { fprintf(stderr, ";; <null>\n"); return; } | |
138 | n = (*jni)->GetArrayLength(jni, v); | |
139 | p = (*jni)->GetByteArrayElements(jni, v, 0); | |
140 | dump_bytes(p, n, 0); | |
141 | (*jni)->ReleaseByteArrayElements(jni, v, p, JNI_ABORT); | |
142 | } | |
143 | #endif | |
144 | ||
145 | static jbyteArray wrap_cstring(JNIEnv *jni, const char *p) | |
146 | { | |
147 | size_t n; | |
148 | jbyteArray v; | |
149 | jbyte *q; | |
150 | ||
151 | if (!p) return (0); | |
152 | n = strlen(p) + 1; | |
153 | v = (*jni)->NewByteArray(jni, n); if (!v) return (0); | |
154 | q = (*jni)->GetByteArrayElements(jni, v, 0); if (!q) return (0); | |
155 | memcpy(q, p, n); | |
156 | (*jni)->ReleaseByteArrayElements(jni, v, q, 0); | |
157 | return (v); | |
158 | } | |
159 | ||
160 | static const char *get_cstring(JNIEnv *jni, jbyteArray v) | |
161 | { | |
162 | if (!v) { except(jni, NULLERR, 0); return (0); } | |
163 | return ((const char *)(*jni)->GetByteArrayElements(jni, v, 0)); | |
164 | } | |
165 | ||
166 | static void vexcept_syserror(JNIEnv *jni, const char *clsname, | |
167 | int err, const char *msg, va_list ap) | |
168 | { | |
169 | jclass cls; | |
170 | int rc; | |
171 | dstr d = DSTR_INIT; | |
172 | jbyteArray msgstr; | |
173 | jthrowable e; | |
174 | jmethodID init; | |
175 | ||
176 | cls = (*jni)->FindClass(jni, clsname); assert(cls); | |
177 | init = (*jni)->GetMethodID(jni, cls, "<init>", "(I[B)V"); assert(init); | |
178 | dstr_vputf(&d, msg, &ap); | |
179 | msgstr = wrap_cstring(jni, d.buf); assert(msgstr); | |
180 | dstr_destroy(&d); | |
181 | e = (*jni)->NewObject(jni, cls, init, err, msgstr); assert(e); | |
182 | rc = (*jni)->Throw(jni, e); assert(!rc); | |
183 | } | |
184 | ||
185 | static void except_syserror(JNIEnv *jni, const char *clsname, | |
186 | int err, const char *msg, ...) | |
187 | { | |
188 | va_list ap; | |
189 | ||
190 | va_start(ap, msg); | |
191 | vexcept_syserror(jni, clsname, err, msg, ap); | |
192 | va_end(ap); | |
193 | } | |
194 | ||
195 | /*----- Wrapping native types ---------------------------------------------*/ | |
196 | ||
197 | /* There's no way defined in the JNI to stash a C pointer in a Java object. | |
198 | * It seems that the usual approach is to cast to `jlong', but this is | |
199 | * clearly unsatisfactory. Instead, we store structures as Java byte arrays, | |
200 | * with a 32-bit tag on the front. | |
201 | */ | |
3a2f1a4b MW |
202 | |
203 | struct native_type { | |
204 | const char *name; | |
205 | size_t sz; | |
8eabb4ff | 206 | uint32 tag; |
3a2f1a4b MW |
207 | }; |
208 | ||
8eabb4ff | 209 | typedef jbyteArray wrapper; |
3a2f1a4b | 210 | |
8eabb4ff MW |
211 | struct native_base { |
212 | uint32 tag; | |
3a2f1a4b MW |
213 | }; |
214 | ||
8eabb4ff MW |
215 | static int unwrap(JNIEnv *jni, void *p, |
216 | const struct native_type *ty, wrapper w) | |
217 | { | |
218 | jbyte *q; | |
219 | jclass cls; | |
220 | struct native_base *b = p; | |
221 | jsize n; | |
222 | ||
223 | if (!w) { except(jni, NULLERR, 0); return (-1); } | |
224 | cls = (*jni)->FindClass(jni, "[B"); assert(cls); | |
225 | if (!(*jni)->IsInstanceOf(jni, w, cls)) { | |
226 | except(jni, TYPEERR, | |
227 | "corrupted native object wrapper: expected a byte array"); | |
228 | return (-1); | |
229 | } | |
230 | n = (*jni)->GetArrayLength(jni, w); | |
231 | if (n != ty->sz) { | |
232 | except(jni, TYPEERR, | |
233 | "corrupted native object wrapper: wrong size for `%s'", | |
234 | ty->name); | |
235 | return (-1); | |
236 | } | |
237 | q = (*jni)->GetByteArrayElements(jni, w, 0); if (!q) return (-1); | |
238 | memcpy(b, q, ty->sz); | |
239 | (*jni)->ReleaseByteArrayElements(jni, w, q, JNI_ABORT); | |
240 | if (b->tag != ty->tag) { | |
241 | except(jni, TYPEERR, | |
242 | "corrupted native object wrapper: expected tag for `%s'", | |
243 | ty->name); | |
244 | return (-1); | |
245 | } | |
246 | return (0); | |
247 | } | |
248 | ||
249 | static int update_wrapper(JNIEnv *jni, const struct native_type *ty, | |
250 | wrapper w, const void *p) | |
251 | { | |
252 | jbyte *q; | |
253 | ||
254 | q = (*jni)->GetByteArrayElements(jni, w, 0); if (!q) return (-1); | |
255 | memcpy(q, p, ty->sz); | |
256 | (*jni)->ReleaseByteArrayElements(jni, w, q, 0); | |
257 | return (0); | |
258 | } | |
259 | ||
260 | static wrapper wrap(JNIEnv *jni, const struct native_type *ty, const void *p) | |
261 | { | |
262 | wrapper w; | |
263 | ||
264 | w = (*jni)->NewByteArray(jni, ty->sz); if (!w) return (0); | |
265 | if (update_wrapper(jni, ty, w, p)) return (0); | |
266 | return (w); | |
267 | } | |
268 | ||
269 | #define INIT_NATIVE(type, p) do (p)->_base.tag = type##_type.tag; while (0) | |
270 | ||
271 | /*----- Crypto information ------------------------------------------------*/ | |
272 | ||
273 | JNIEXPORT jint JNICALL JNIFUNC(hashsz)(JNIEnv *jni, jobject cls, | |
274 | jstring hnamestr) | |
275 | { | |
276 | jint rc = -1; | |
277 | const char *hname; | |
278 | const gchash *hc; | |
279 | ||
280 | hname = (*jni)->GetStringUTFChars(jni, hnamestr, 0); | |
281 | if (!hname) goto end; | |
282 | hc = ghash_byname(hname); if (!hc) goto end; | |
283 | rc = hc->hashsz; | |
284 | ||
285 | end: | |
286 | if (hname) (*jni)->ReleaseStringUTFChars(jni, hnamestr, hname); | |
287 | return (rc); | |
288 | } | |
289 | ||
290 | /*----- System errors -----------------------------------------------------*/ | |
291 | ||
292 | static const struct errtab { const char *tag; int err; } errtab[] = { | |
293 | /* | |
294 | ;;; The errno name table is very boring to type. To make life less | |
295 | ;;; awful, put the errno names in this list and evaluate the code to | |
296 | ;;; get Emacs to regenerate it. | |
297 | ||
298 | (let ((errors '(EPERM ENOENT ESRCH EINTR EIO ENXIO E2BIG ENOEXEC EBADF | |
299 | ECHILD EAGAIN ENOMEM EACCES EFAULT ENOTBLK EBUSY EEXIST | |
300 | EXDEV ENODEV ENOTDIR EISDIR EINVAL ENFILE EMFILE ENOTTY | |
301 | ETXTBSY EFBIG ENOSPC ESPIPE EROFS EMLINK EPIPE EDOM | |
302 | ERANGE | |
303 | ||
304 | EDEADLK ENAMETOOLONG ENOLCK ENOSYS ENOTEMPTY ELOOP | |
305 | EWOULDBLOCK ENOMSG EIDRM ECHRNG EL2NSYNC EL3HLT EL3RST | |
306 | ELNRNG EUNATCH ENOCSI EL2HLT EBADE EBADR EXFULL ENOANO | |
307 | EBADRQC EBADSLT EDEADLOCK EBFONT ENOSTR ENODATA ETIME | |
308 | ENOSR ENONET ENOPKG EREMOTE ENOLINK EADV ESRMNT ECOMM | |
309 | EPROTO EMULTIHOP EDOTDOT EBADMSG EOVERFLOW ENOTUNIQ | |
310 | EBADFD EREMCHG ELIBACC ELIBBAD ELIBSCN ELIBMAX ELIBEXEC | |
311 | EILSEQ ERESTART ESTRPIPE EUSERS ENOTSOCK EDESTADDRREQ | |
312 | EMSGSIZE EPROTOTYPE ENOPROTOOPT EPROTONOSUPPORT | |
313 | ESOCKTNOSUPPORT EOPNOTSUPP EPFNOSUPPORT EAFNOSUPPORT | |
314 | EADDRINUSE EADDRNOTAVAIL ENETDOWN ENETUNREACH ENETRESET | |
315 | ECONNABORTED ECONNRESET ENOBUFS EISCONN ENOTCONN | |
316 | ESHUTDOWN ETOOMANYREFS ETIMEDOUT ECONNREFUSED EHOSTDOWN | |
317 | EHOSTUNREACH EALREADY EINPROGRESS ESTALE EUCLEAN ENOTNAM | |
318 | ENAVAIL EISNAM EREMOTEIO EDQUOT ENOMEDIUM EMEDIUMTYPE | |
319 | ECANCELED ENOKEY EKEYEXPIRED EKEYREVOKED EKEYREJECTED | |
320 | EOWNERDEAD ENOTRECOVERABLE ERFKILL EHWPOISON))) | |
321 | (save-excursion | |
322 | (goto-char (point-min)) | |
323 | (search-forward (concat "***" "BEGIN errtab" "***")) | |
324 | (beginning-of-line 2) | |
325 | (delete-region (point) | |
326 | (progn | |
327 | (search-forward "***END***") | |
328 | (beginning-of-line) | |
329 | (point))) | |
330 | (dolist (err errors) | |
331 | (insert (format "#ifdef %s\n { \"%s\", %s },\n#endif\n" | |
332 | err err err))))) | |
333 | */ | |
334 | /***BEGIN errtab***/ | |
335 | #ifdef EPERM | |
336 | { "EPERM", EPERM }, | |
337 | #endif | |
338 | #ifdef ENOENT | |
339 | { "ENOENT", ENOENT }, | |
340 | #endif | |
341 | #ifdef ESRCH | |
342 | { "ESRCH", ESRCH }, | |
343 | #endif | |
344 | #ifdef EINTR | |
345 | { "EINTR", EINTR }, | |
346 | #endif | |
347 | #ifdef EIO | |
348 | { "EIO", EIO }, | |
349 | #endif | |
350 | #ifdef ENXIO | |
351 | { "ENXIO", ENXIO }, | |
352 | #endif | |
353 | #ifdef E2BIG | |
354 | { "E2BIG", E2BIG }, | |
355 | #endif | |
356 | #ifdef ENOEXEC | |
357 | { "ENOEXEC", ENOEXEC }, | |
358 | #endif | |
359 | #ifdef EBADF | |
360 | { "EBADF", EBADF }, | |
361 | #endif | |
362 | #ifdef ECHILD | |
363 | { "ECHILD", ECHILD }, | |
364 | #endif | |
365 | #ifdef EAGAIN | |
366 | { "EAGAIN", EAGAIN }, | |
367 | #endif | |
368 | #ifdef ENOMEM | |
369 | { "ENOMEM", ENOMEM }, | |
370 | #endif | |
371 | #ifdef EACCES | |
372 | { "EACCES", EACCES }, | |
373 | #endif | |
374 | #ifdef EFAULT | |
375 | { "EFAULT", EFAULT }, | |
376 | #endif | |
377 | #ifdef ENOTBLK | |
378 | { "ENOTBLK", ENOTBLK }, | |
379 | #endif | |
380 | #ifdef EBUSY | |
381 | { "EBUSY", EBUSY }, | |
382 | #endif | |
383 | #ifdef EEXIST | |
384 | { "EEXIST", EEXIST }, | |
385 | #endif | |
386 | #ifdef EXDEV | |
387 | { "EXDEV", EXDEV }, | |
388 | #endif | |
389 | #ifdef ENODEV | |
390 | { "ENODEV", ENODEV }, | |
391 | #endif | |
392 | #ifdef ENOTDIR | |
393 | { "ENOTDIR", ENOTDIR }, | |
394 | #endif | |
395 | #ifdef EISDIR | |
396 | { "EISDIR", EISDIR }, | |
397 | #endif | |
398 | #ifdef EINVAL | |
399 | { "EINVAL", EINVAL }, | |
400 | #endif | |
401 | #ifdef ENFILE | |
402 | { "ENFILE", ENFILE }, | |
403 | #endif | |
404 | #ifdef EMFILE | |
405 | { "EMFILE", EMFILE }, | |
406 | #endif | |
407 | #ifdef ENOTTY | |
408 | { "ENOTTY", ENOTTY }, | |
409 | #endif | |
410 | #ifdef ETXTBSY | |
411 | { "ETXTBSY", ETXTBSY }, | |
412 | #endif | |
413 | #ifdef EFBIG | |
414 | { "EFBIG", EFBIG }, | |
415 | #endif | |
416 | #ifdef ENOSPC | |
417 | { "ENOSPC", ENOSPC }, | |
418 | #endif | |
419 | #ifdef ESPIPE | |
420 | { "ESPIPE", ESPIPE }, | |
421 | #endif | |
422 | #ifdef EROFS | |
423 | { "EROFS", EROFS }, | |
424 | #endif | |
425 | #ifdef EMLINK | |
426 | { "EMLINK", EMLINK }, | |
427 | #endif | |
428 | #ifdef EPIPE | |
429 | { "EPIPE", EPIPE }, | |
430 | #endif | |
431 | #ifdef EDOM | |
432 | { "EDOM", EDOM }, | |
433 | #endif | |
434 | #ifdef ERANGE | |
435 | { "ERANGE", ERANGE }, | |
436 | #endif | |
437 | #ifdef EDEADLK | |
438 | { "EDEADLK", EDEADLK }, | |
439 | #endif | |
440 | #ifdef ENAMETOOLONG | |
441 | { "ENAMETOOLONG", ENAMETOOLONG }, | |
442 | #endif | |
443 | #ifdef ENOLCK | |
444 | { "ENOLCK", ENOLCK }, | |
445 | #endif | |
446 | #ifdef ENOSYS | |
447 | { "ENOSYS", ENOSYS }, | |
448 | #endif | |
449 | #ifdef ENOTEMPTY | |
450 | { "ENOTEMPTY", ENOTEMPTY }, | |
451 | #endif | |
452 | #ifdef ELOOP | |
453 | { "ELOOP", ELOOP }, | |
454 | #endif | |
455 | #ifdef EWOULDBLOCK | |
456 | { "EWOULDBLOCK", EWOULDBLOCK }, | |
457 | #endif | |
458 | #ifdef ENOMSG | |
459 | { "ENOMSG", ENOMSG }, | |
460 | #endif | |
461 | #ifdef EIDRM | |
462 | { "EIDRM", EIDRM }, | |
463 | #endif | |
464 | #ifdef ECHRNG | |
465 | { "ECHRNG", ECHRNG }, | |
466 | #endif | |
467 | #ifdef EL2NSYNC | |
468 | { "EL2NSYNC", EL2NSYNC }, | |
469 | #endif | |
470 | #ifdef EL3HLT | |
471 | { "EL3HLT", EL3HLT }, | |
472 | #endif | |
473 | #ifdef EL3RST | |
474 | { "EL3RST", EL3RST }, | |
475 | #endif | |
476 | #ifdef ELNRNG | |
477 | { "ELNRNG", ELNRNG }, | |
478 | #endif | |
479 | #ifdef EUNATCH | |
480 | { "EUNATCH", EUNATCH }, | |
481 | #endif | |
482 | #ifdef ENOCSI | |
483 | { "ENOCSI", ENOCSI }, | |
484 | #endif | |
485 | #ifdef EL2HLT | |
486 | { "EL2HLT", EL2HLT }, | |
487 | #endif | |
488 | #ifdef EBADE | |
489 | { "EBADE", EBADE }, | |
490 | #endif | |
491 | #ifdef EBADR | |
492 | { "EBADR", EBADR }, | |
493 | #endif | |
494 | #ifdef EXFULL | |
495 | { "EXFULL", EXFULL }, | |
496 | #endif | |
497 | #ifdef ENOANO | |
498 | { "ENOANO", ENOANO }, | |
499 | #endif | |
500 | #ifdef EBADRQC | |
501 | { "EBADRQC", EBADRQC }, | |
502 | #endif | |
503 | #ifdef EBADSLT | |
504 | { "EBADSLT", EBADSLT }, | |
505 | #endif | |
506 | #ifdef EDEADLOCK | |
507 | { "EDEADLOCK", EDEADLOCK }, | |
508 | #endif | |
509 | #ifdef EBFONT | |
510 | { "EBFONT", EBFONT }, | |
511 | #endif | |
512 | #ifdef ENOSTR | |
513 | { "ENOSTR", ENOSTR }, | |
514 | #endif | |
515 | #ifdef ENODATA | |
516 | { "ENODATA", ENODATA }, | |
517 | #endif | |
518 | #ifdef ETIME | |
519 | { "ETIME", ETIME }, | |
520 | #endif | |
521 | #ifdef ENOSR | |
522 | { "ENOSR", ENOSR }, | |
523 | #endif | |
524 | #ifdef ENONET | |
525 | { "ENONET", ENONET }, | |
526 | #endif | |
527 | #ifdef ENOPKG | |
528 | { "ENOPKG", ENOPKG }, | |
529 | #endif | |
530 | #ifdef EREMOTE | |
531 | { "EREMOTE", EREMOTE }, | |
532 | #endif | |
533 | #ifdef ENOLINK | |
534 | { "ENOLINK", ENOLINK }, | |
535 | #endif | |
536 | #ifdef EADV | |
537 | { "EADV", EADV }, | |
538 | #endif | |
539 | #ifdef ESRMNT | |
540 | { "ESRMNT", ESRMNT }, | |
541 | #endif | |
542 | #ifdef ECOMM | |
543 | { "ECOMM", ECOMM }, | |
544 | #endif | |
545 | #ifdef EPROTO | |
546 | { "EPROTO", EPROTO }, | |
547 | #endif | |
548 | #ifdef EMULTIHOP | |
549 | { "EMULTIHOP", EMULTIHOP }, | |
550 | #endif | |
551 | #ifdef EDOTDOT | |
552 | { "EDOTDOT", EDOTDOT }, | |
553 | #endif | |
554 | #ifdef EBADMSG | |
555 | { "EBADMSG", EBADMSG }, | |
556 | #endif | |
557 | #ifdef EOVERFLOW | |
558 | { "EOVERFLOW", EOVERFLOW }, | |
559 | #endif | |
560 | #ifdef ENOTUNIQ | |
561 | { "ENOTUNIQ", ENOTUNIQ }, | |
562 | #endif | |
563 | #ifdef EBADFD | |
564 | { "EBADFD", EBADFD }, | |
565 | #endif | |
566 | #ifdef EREMCHG | |
567 | { "EREMCHG", EREMCHG }, | |
568 | #endif | |
569 | #ifdef ELIBACC | |
570 | { "ELIBACC", ELIBACC }, | |
571 | #endif | |
572 | #ifdef ELIBBAD | |
573 | { "ELIBBAD", ELIBBAD }, | |
574 | #endif | |
575 | #ifdef ELIBSCN | |
576 | { "ELIBSCN", ELIBSCN }, | |
577 | #endif | |
578 | #ifdef ELIBMAX | |
579 | { "ELIBMAX", ELIBMAX }, | |
580 | #endif | |
581 | #ifdef ELIBEXEC | |
582 | { "ELIBEXEC", ELIBEXEC }, | |
583 | #endif | |
584 | #ifdef EILSEQ | |
585 | { "EILSEQ", EILSEQ }, | |
586 | #endif | |
587 | #ifdef ERESTART | |
588 | { "ERESTART", ERESTART }, | |
589 | #endif | |
590 | #ifdef ESTRPIPE | |
591 | { "ESTRPIPE", ESTRPIPE }, | |
592 | #endif | |
593 | #ifdef EUSERS | |
594 | { "EUSERS", EUSERS }, | |
595 | #endif | |
596 | #ifdef ENOTSOCK | |
597 | { "ENOTSOCK", ENOTSOCK }, | |
598 | #endif | |
599 | #ifdef EDESTADDRREQ | |
600 | { "EDESTADDRREQ", EDESTADDRREQ }, | |
601 | #endif | |
602 | #ifdef EMSGSIZE | |
603 | { "EMSGSIZE", EMSGSIZE }, | |
604 | #endif | |
605 | #ifdef EPROTOTYPE | |
606 | { "EPROTOTYPE", EPROTOTYPE }, | |
607 | #endif | |
608 | #ifdef ENOPROTOOPT | |
609 | { "ENOPROTOOPT", ENOPROTOOPT }, | |
610 | #endif | |
611 | #ifdef EPROTONOSUPPORT | |
612 | { "EPROTONOSUPPORT", EPROTONOSUPPORT }, | |
613 | #endif | |
614 | #ifdef ESOCKTNOSUPPORT | |
615 | { "ESOCKTNOSUPPORT", ESOCKTNOSUPPORT }, | |
616 | #endif | |
617 | #ifdef EOPNOTSUPP | |
618 | { "EOPNOTSUPP", EOPNOTSUPP }, | |
619 | #endif | |
620 | #ifdef EPFNOSUPPORT | |
621 | { "EPFNOSUPPORT", EPFNOSUPPORT }, | |
622 | #endif | |
623 | #ifdef EAFNOSUPPORT | |
624 | { "EAFNOSUPPORT", EAFNOSUPPORT }, | |
625 | #endif | |
626 | #ifdef EADDRINUSE | |
627 | { "EADDRINUSE", EADDRINUSE }, | |
628 | #endif | |
629 | #ifdef EADDRNOTAVAIL | |
630 | { "EADDRNOTAVAIL", EADDRNOTAVAIL }, | |
631 | #endif | |
632 | #ifdef ENETDOWN | |
633 | { "ENETDOWN", ENETDOWN }, | |
634 | #endif | |
635 | #ifdef ENETUNREACH | |
636 | { "ENETUNREACH", ENETUNREACH }, | |
637 | #endif | |
638 | #ifdef ENETRESET | |
639 | { "ENETRESET", ENETRESET }, | |
640 | #endif | |
641 | #ifdef ECONNABORTED | |
642 | { "ECONNABORTED", ECONNABORTED }, | |
643 | #endif | |
644 | #ifdef ECONNRESET | |
645 | { "ECONNRESET", ECONNRESET }, | |
646 | #endif | |
647 | #ifdef ENOBUFS | |
648 | { "ENOBUFS", ENOBUFS }, | |
649 | #endif | |
650 | #ifdef EISCONN | |
651 | { "EISCONN", EISCONN }, | |
652 | #endif | |
653 | #ifdef ENOTCONN | |
654 | { "ENOTCONN", ENOTCONN }, | |
655 | #endif | |
656 | #ifdef ESHUTDOWN | |
657 | { "ESHUTDOWN", ESHUTDOWN }, | |
658 | #endif | |
659 | #ifdef ETOOMANYREFS | |
660 | { "ETOOMANYREFS", ETOOMANYREFS }, | |
661 | #endif | |
662 | #ifdef ETIMEDOUT | |
663 | { "ETIMEDOUT", ETIMEDOUT }, | |
664 | #endif | |
665 | #ifdef ECONNREFUSED | |
666 | { "ECONNREFUSED", ECONNREFUSED }, | |
667 | #endif | |
668 | #ifdef EHOSTDOWN | |
669 | { "EHOSTDOWN", EHOSTDOWN }, | |
670 | #endif | |
671 | #ifdef EHOSTUNREACH | |
672 | { "EHOSTUNREACH", EHOSTUNREACH }, | |
673 | #endif | |
674 | #ifdef EALREADY | |
675 | { "EALREADY", EALREADY }, | |
676 | #endif | |
677 | #ifdef EINPROGRESS | |
678 | { "EINPROGRESS", EINPROGRESS }, | |
679 | #endif | |
680 | #ifdef ESTALE | |
681 | { "ESTALE", ESTALE }, | |
682 | #endif | |
683 | #ifdef EUCLEAN | |
684 | { "EUCLEAN", EUCLEAN }, | |
685 | #endif | |
686 | #ifdef ENOTNAM | |
687 | { "ENOTNAM", ENOTNAM }, | |
688 | #endif | |
689 | #ifdef ENAVAIL | |
690 | { "ENAVAIL", ENAVAIL }, | |
691 | #endif | |
692 | #ifdef EISNAM | |
693 | { "EISNAM", EISNAM }, | |
694 | #endif | |
695 | #ifdef EREMOTEIO | |
696 | { "EREMOTEIO", EREMOTEIO }, | |
697 | #endif | |
698 | #ifdef EDQUOT | |
699 | { "EDQUOT", EDQUOT }, | |
700 | #endif | |
701 | #ifdef ENOMEDIUM | |
702 | { "ENOMEDIUM", ENOMEDIUM }, | |
703 | #endif | |
704 | #ifdef EMEDIUMTYPE | |
705 | { "EMEDIUMTYPE", EMEDIUMTYPE }, | |
706 | #endif | |
707 | #ifdef ECANCELED | |
708 | { "ECANCELED", ECANCELED }, | |
709 | #endif | |
710 | #ifdef ENOKEY | |
711 | { "ENOKEY", ENOKEY }, | |
712 | #endif | |
713 | #ifdef EKEYEXPIRED | |
714 | { "EKEYEXPIRED", EKEYEXPIRED }, | |
715 | #endif | |
716 | #ifdef EKEYREVOKED | |
717 | { "EKEYREVOKED", EKEYREVOKED }, | |
718 | #endif | |
719 | #ifdef EKEYREJECTED | |
720 | { "EKEYREJECTED", EKEYREJECTED }, | |
721 | #endif | |
722 | #ifdef EOWNERDEAD | |
723 | { "EOWNERDEAD", EOWNERDEAD }, | |
724 | #endif | |
725 | #ifdef ENOTRECOVERABLE | |
726 | { "ENOTRECOVERABLE", ENOTRECOVERABLE }, | |
727 | #endif | |
728 | #ifdef ERFKILL | |
729 | { "ERFKILL", ERFKILL }, | |
730 | #endif | |
731 | #ifdef EHWPOISON | |
732 | { "EHWPOISON", EHWPOISON }, | |
733 | #endif | |
734 | /***END***/ | |
3a2f1a4b MW |
735 | }; |
736 | ||
8eabb4ff | 737 | JNIEXPORT jobject JNIFUNC(errtab)(JNIEnv *jni, jobject cls) |
3a2f1a4b | 738 | { |
8eabb4ff MW |
739 | size_t i; |
740 | jclass eltcls; | |
741 | jarray v; | |
742 | jmethodID init; | |
743 | jobject e; | |
3a2f1a4b | 744 | |
8eabb4ff MW |
745 | eltcls = |
746 | (*jni)->FindClass(jni, ERRENTRY); | |
747 | assert(eltcls); | |
748 | v = (*jni)->NewObjectArray(jni, N(errtab), eltcls, 0); if (!v) return (0); | |
749 | init = (*jni)->GetMethodID(jni, eltcls, "<init>", | |
750 | "(Ljava/lang/String;I)V"); | |
751 | assert(init); | |
752 | ||
753 | for (i = 0; i < N(errtab); i++) { | |
754 | e = (*jni)->NewObject(jni, eltcls, init, | |
755 | (*jni)->NewStringUTF(jni, errtab[i].tag), | |
756 | errtab[i].err); | |
757 | (*jni)->SetObjectArrayElement(jni, v, i, e); | |
758 | } | |
759 | return (v); | |
760 | } | |
761 | ||
762 | JNIEXPORT jobject JNIFUNC(strerror)(JNIEnv *jni, jobject cls, jint err) | |
763 | { return (wrap_cstring(jni, strerror(err))); } | |
764 | ||
765 | /*----- Low-level file operations -----------------------------------------*/ | |
766 | ||
767 | /* Java has these already, as methods on `java.io.File' objects. Alas, these | |
768 | * methods are useless at reporting errors: they tend to return a `boolean' | |
769 | * success/ fail indicator, and throw away any more detailed information. | |
770 | * There's better functionality in `java.nio.file.Files', but that only turns | |
771 | * up in Android API 26 (in 7.0 Nougat). There's `android.system.Os', which | |
772 | * has a bunch of POSIX-shaped functions -- but they're only in Android API | |
773 | * 21 (in 5.0 Lollipop), and there's nothing in the support library to help. | |
774 | * | |
775 | * So the other option is to implement them ourselves. | |
776 | */ | |
777 | ||
778 | JNIEXPORT void JNIFUNC(unlink)(JNIEnv *jni, jobject cls, jobject path) | |
779 | { | |
780 | const char *pathstr = 0; | |
781 | ||
782 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
783 | if (unlink(pathstr)) { | |
784 | except_syserror(jni, SYSERR, errno, | |
785 | "failed to delete file `%s'", pathstr); | |
786 | goto end; | |
787 | } | |
788 | end: | |
789 | put_cstring(jni, path, pathstr); | |
3a2f1a4b MW |
790 | } |
791 | ||
8eabb4ff MW |
792 | JNIEXPORT void JNIFUNC(rmdir)(JNIEnv *jni, jobject cls, jobject path) |
793 | { | |
794 | const char *pathstr = 0; | |
3a2f1a4b | 795 | |
8eabb4ff MW |
796 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
797 | if (rmdir(pathstr)) { | |
798 | except_syserror(jni, SYSERR, errno, | |
799 | "failed to delete directory `%s'", pathstr); | |
800 | goto end; | |
801 | } | |
802 | end: | |
803 | put_cstring(jni, path, pathstr); | |
804 | } | |
805 | ||
806 | JNIEXPORT void JNIFUNC(mkdir)(JNIEnv *jni, jobject cls, | |
807 | jobject path, jint mode) | |
3a2f1a4b | 808 | { |
8eabb4ff MW |
809 | const char *pathstr = 0; |
810 | ||
811 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
812 | if (mkdir(pathstr, mode)) { | |
813 | except_syserror(jni, SYSERR, errno, | |
814 | "failed to create directory `%s'", pathstr); | |
815 | goto end; | |
816 | } | |
817 | end: | |
818 | put_cstring(jni, path, pathstr); | |
3a2f1a4b MW |
819 | } |
820 | ||
8eabb4ff MW |
821 | JNIEXPORT void JNIFUNC(mkfile)(JNIEnv *jni, jobject cls, |
822 | jobject path, jint mode) | |
3a2f1a4b | 823 | { |
8eabb4ff MW |
824 | const char *pathstr = 0; |
825 | int fd = -1; | |
3a2f1a4b | 826 | |
8eabb4ff MW |
827 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
828 | fd = open(pathstr, O_WRONLY | O_CREAT | O_EXCL, mode); | |
829 | if (fd < 0) { | |
830 | except_syserror(jni, SYSERR, errno, | |
831 | "failed to create fresh file `%s'", pathstr); | |
832 | goto end; | |
3a2f1a4b | 833 | } |
8eabb4ff MW |
834 | end: |
835 | if (fd != -1) close(fd); | |
836 | put_cstring(jni, path, pathstr); | |
3a2f1a4b MW |
837 | } |
838 | ||
8eabb4ff MW |
839 | JNIEXPORT void JNIFUNC(rename)(JNIEnv *jni, jobject cls, |
840 | jobject from, jobject to) | |
3a2f1a4b | 841 | { |
8eabb4ff MW |
842 | const char *fromstr = 0, *tostr = 0; |
843 | ||
844 | fromstr = get_cstring(jni, from); if (!fromstr) goto end; | |
845 | tostr = get_cstring(jni, to); if (!tostr) goto end; | |
846 | if (rename(fromstr, tostr)) { | |
847 | except_syserror(jni, SYSERR, errno, | |
848 | "failed to rename `%s' as `%s'", fromstr, tostr); | |
849 | goto end; | |
850 | } | |
851 | end: | |
852 | put_cstring(jni, from, fromstr); | |
853 | put_cstring(jni, to, tostr); | |
3a2f1a4b MW |
854 | } |
855 | ||
8eabb4ff MW |
856 | #define LKF_EXCL 1u |
857 | #define LKF_WAIT 2u | |
858 | struct lockf { | |
859 | struct native_base _base; | |
860 | int fd; | |
861 | }; | |
862 | static struct native_type lockf_type = | |
863 | { "lock", sizeof(struct lockf), 0xb2648926}; | |
864 | JNIEXPORT wrapper JNIFUNC(lock)(JNIEnv *jni, jobject cls, | |
865 | jobject path, jint flags) | |
866 | { | |
867 | const char *pathstr = 0; | |
868 | int fd = -1; | |
869 | struct flock l; | |
870 | struct lockf lk; | |
871 | struct stat st0, st1; | |
872 | int f; | |
873 | wrapper r = 0; | |
874 | ||
875 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
876 | ||
877 | again: | |
878 | fd = open(pathstr, O_RDWR | O_CREAT); if (fd < 0) goto err; | |
879 | if (fstat(fd, &st0)) goto err; | |
880 | f = fcntl(fd, F_GETFD); if (f < 0) goto err; | |
881 | if (fcntl(fd, F_SETFD, f | FD_CLOEXEC)) goto err; | |
882 | l.l_type = (flags&LKF_EXCL) ? F_WRLCK : F_RDLCK; | |
883 | l.l_whence = SEEK_SET; | |
884 | l.l_start = 0; | |
885 | l.l_len = 0; | |
886 | if (fcntl(fd, (flags&LKF_WAIT) ? F_SETLKW : F_SETLK, &l)) goto err; | |
887 | if (stat(pathstr, &st1)) | |
888 | { if (errno == ENOENT) goto again; else goto err; } | |
889 | if (st0.st_dev != st1.st_dev || st0.st_ino != st1.st_ino) | |
890 | { close(fd); fd = -1; goto again; } | |
891 | ||
892 | INIT_NATIVE(lockf, &lk); lk.fd = fd; fd = -1; | |
893 | r = wrap(jni, &lockf_type, &lk); | |
894 | goto end; | |
895 | ||
896 | err: | |
897 | except_syserror(jni, SYSERR, errno, "failed to lock file `%s'", pathstr); | |
898 | end: | |
899 | if (fd != -1) close(fd); | |
900 | put_cstring(jni, path, pathstr); | |
901 | return (r); | |
902 | } | |
903 | ||
904 | JNIEXPORT void JNIFUNC(unlock)(JNIEnv *jni, jobject cls, wrapper wlk) | |
905 | { | |
906 | struct lockf lk; | |
907 | struct flock l; | |
908 | int rc; | |
909 | ||
910 | if (unwrap(jni, &lk, &lockf_type, wlk)) goto end; | |
911 | if (lk.fd == -1) goto end; | |
912 | l.l_type = F_UNLCK; | |
913 | l.l_whence = SEEK_SET; | |
914 | l.l_start = 0; | |
915 | l.l_len = 0; | |
916 | if (fcntl(lk.fd, F_SETLK, &l)) goto end; | |
917 | close(lk.fd); lk.fd = -1; | |
918 | rc = update_wrapper(jni, &lockf_type, wlk, &lk); assert(!rc); | |
919 | end:; | |
920 | } | |
921 | ||
922 | static jlong xlttimespec(const struct timespec *ts) | |
923 | { return (1000*(jlong)ts->tv_sec + ts->tv_nsec/1000000); } | |
924 | ||
925 | static jobject xltstat(JNIEnv *jni, const struct stat *st) | |
926 | { | |
927 | jclass cls; | |
928 | jmethodID init; | |
929 | jint modehack; | |
930 | ||
931 | modehack = st->st_mode&07777; | |
932 | if (S_ISFIFO(st->st_mode)) modehack |= 0010000; | |
933 | else if (S_ISCHR(st->st_mode)) modehack |= 0020000; | |
934 | else if (S_ISDIR(st->st_mode)) modehack |= 0040000; | |
935 | else if (S_ISBLK(st->st_mode)) modehack |= 0060000; | |
936 | else if (S_ISREG(st->st_mode)) modehack |= 0100000; | |
937 | else if (S_ISLNK(st->st_mode)) modehack |= 0120000; | |
938 | else if (S_ISSOCK(st->st_mode)) modehack |= 0140000; | |
939 | ||
940 | cls = (*jni)->FindClass(jni, STAT); assert(cls); | |
941 | init = (*jni)->GetMethodID(jni, cls, "<init>", "(IIJIIIIIIJIJJJJ)V"); | |
942 | assert(init); | |
943 | return ((*jni)->NewObject(jni, cls, init, | |
944 | (jint)major(st->st_dev), (jint)minor(st->st_dev), | |
945 | (jlong)st->st_ino, | |
946 | modehack, | |
947 | (jint)st->st_nlink, | |
948 | (jint)st->st_uid, (jint)st->st_gid, | |
949 | (jint)major(st->st_rdev), (jint)minor(st->st_rdev), | |
950 | (jlong)st->st_size, | |
951 | (jint)st->st_blksize, (jlong)st->st_blocks, | |
952 | xlttimespec(&st->st_atim), | |
953 | xlttimespec(&st->st_mtim), | |
954 | xlttimespec(&st->st_ctim))); | |
955 | } | |
956 | ||
957 | JNIEXPORT jobject JNIFUNC(stat)(JNIEnv *jni, jobject cls, jobject path) | |
3a2f1a4b | 958 | { |
8eabb4ff MW |
959 | jobject r = 0; |
960 | const char *pathstr = 0; | |
961 | struct stat st; | |
962 | ||
963 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
964 | if (stat(pathstr, &st)) { | |
965 | except_syserror(jni, SYSERR, errno, | |
966 | "failed to read information about `%s'", pathstr); | |
967 | goto end; | |
968 | } | |
969 | r = xltstat(jni, &st); | |
970 | end: | |
971 | put_cstring(jni, path, pathstr); | |
972 | return (r); | |
3a2f1a4b MW |
973 | } |
974 | ||
8eabb4ff MW |
975 | JNIEXPORT jobject JNIFUNC(lstat)(JNIEnv *jni, jobject cls, jobject path) |
976 | { | |
977 | jobject r = 0; | |
978 | const char *pathstr = 0; | |
979 | struct stat st; | |
3a2f1a4b | 980 | |
8eabb4ff MW |
981 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
982 | if (lstat(pathstr, &st)) { | |
983 | except_syserror(jni, SYSERR, errno, | |
984 | "failed to read information about `%s'", pathstr); | |
985 | goto end; | |
986 | } | |
987 | r = xltstat(jni, &st); | |
988 | end: | |
989 | put_cstring(jni, path, pathstr); | |
990 | return (r); | |
991 | } | |
992 | ||
993 | struct dir { | |
994 | struct native_base _base; | |
995 | DIR *d; | |
3a2f1a4b | 996 | }; |
8eabb4ff MW |
997 | static const struct native_type dir_type = |
998 | { "dir", sizeof(struct dir), 0x0f5ca477 }; | |
3a2f1a4b | 999 | |
8eabb4ff | 1000 | JNIEXPORT jobject JNIFUNC(opendir)(JNIEnv *jni, jobject cls, jobject path) |
3a2f1a4b | 1001 | { |
8eabb4ff MW |
1002 | const char *pathstr = 0; |
1003 | struct dir dir; | |
1004 | wrapper r = 0; | |
3a2f1a4b | 1005 | |
8eabb4ff MW |
1006 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
1007 | INIT_NATIVE(dir, &dir); | |
1008 | dir.d = opendir(pathstr); | |
1009 | if (!dir.d) { | |
1010 | except_syserror(jni, SYSERR, errno, | |
1011 | "failed to open directory `%s'", pathstr); | |
1012 | goto end; | |
1013 | } | |
1014 | r = wrap(jni, &dir_type, &dir); | |
1015 | end: | |
1016 | put_cstring(jni, path, pathstr); | |
1017 | return (r); | |
3a2f1a4b MW |
1018 | } |
1019 | ||
8eabb4ff MW |
1020 | JNIEXPORT jbyteArray JNIFUNC(readdir)(JNIEnv *jni, jobject cls, |
1021 | jobject path, jobject wdir) | |
3a2f1a4b | 1022 | { |
8eabb4ff MW |
1023 | const char *pathstr = 0; |
1024 | struct dir dir; | |
1025 | struct dirent *d; | |
1026 | jbyteArray r = 0; | |
3a2f1a4b | 1027 | |
8eabb4ff MW |
1028 | if (unwrap(jni, &dir, &dir_type, wdir)) goto end; |
1029 | if (!dir.d) { except(jni, ARGERR, "directory has been closed"); goto end; } | |
1030 | errno = 0; d = readdir(dir.d); | |
1031 | if (errno) { | |
1032 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
1033 | except_syserror(jni, SYSERR, errno, | |
1034 | "failed to read directory `%s'", pathstr); | |
1035 | goto end; | |
1036 | } | |
1037 | if (d) r = wrap_cstring(jni, d->d_name); | |
1038 | end: | |
1039 | put_cstring(jni, path, pathstr); | |
1040 | return (r); | |
1041 | } | |
1042 | ||
1043 | JNIEXPORT void JNIFUNC(closedir)(JNIEnv *jni, jobject cls, | |
1044 | jobject path, jobject wdir) | |
1045 | { | |
1046 | const char *pathstr = 0; | |
1047 | struct dir dir; | |
1048 | ||
1049 | if (unwrap(jni, &dir, &dir_type, wdir)) goto end; | |
1050 | if (!dir.d) goto end; | |
1051 | if (closedir(dir.d)) { | |
1052 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; | |
1053 | except_syserror(jni, SYSERR, errno, | |
1054 | "failed to close directory `%s'", pathstr); | |
1055 | goto end; | |
1056 | } | |
1057 | dir.d = 0; | |
1058 | if (update_wrapper(jni, &dir_type, wdir, &dir)) goto end; | |
1059 | end: | |
1060 | put_cstring(jni, path, pathstr); | |
3a2f1a4b MW |
1061 | } |
1062 | ||
8eabb4ff MW |
1063 | /*----- A server connection, using a Unix-domain socket -------------------*/ |
1064 | ||
3a2f1a4b | 1065 | struct conn { |
8eabb4ff | 1066 | struct native_base _base; |
3a2f1a4b MW |
1067 | int fd; |
1068 | unsigned f; | |
1069 | #define CF_CLOSERD 1u | |
1070 | #define CF_CLOSEWR 2u | |
1071 | #define CF_CLOSEMASK (CF_CLOSERD | CF_CLOSEWR) | |
1072 | }; | |
8eabb4ff MW |
1073 | static const struct native_type conn_type = |
1074 | { "conn", sizeof(struct conn), 0xed030167 }; | |
3a2f1a4b | 1075 | |
8eabb4ff MW |
1076 | JNIEXPORT wrapper JNICALL JNIFUNC(connect)(JNIEnv *jni, jobject cls, |
1077 | jobject path) | |
3a2f1a4b | 1078 | { |
8eabb4ff | 1079 | struct conn conn; |
3a2f1a4b | 1080 | struct sockaddr_un sun; |
8eabb4ff MW |
1081 | const char *pathstr = 0; |
1082 | jobject ret = 0; | |
3a2f1a4b MW |
1083 | int fd = -1; |
1084 | ||
8eabb4ff MW |
1085 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
1086 | if (strlen(pathstr) >= sizeof(sun.sun_path)) { | |
1087 | except(jni, ARGERR, | |
1088 | "Unix-domain socket path `%s' too long", pathstr); | |
1089 | goto end; | |
1090 | } | |
3a2f1a4b | 1091 | |
8eabb4ff MW |
1092 | INIT_NATIVE(conn, &conn); |
1093 | fd = socket(SOCK_STREAM, PF_UNIX, 0); if (fd < 0) goto err; | |
3a2f1a4b MW |
1094 | |
1095 | sun.sun_family = AF_UNIX; | |
8eabb4ff MW |
1096 | strcpy(sun.sun_path, (char *)pathstr); |
1097 | if (connect(fd, (struct sockaddr *)&sun, sizeof(sun))) goto err; | |
3a2f1a4b | 1098 | |
8eabb4ff MW |
1099 | conn.fd = fd; fd = -1; |
1100 | conn.f = 0; | |
1101 | ret = wrap(jni, &conn_type, &conn); | |
1102 | goto end; | |
3a2f1a4b | 1103 | |
3a2f1a4b | 1104 | err: |
8eabb4ff MW |
1105 | except_syserror(jni, SYSERR, errno, |
1106 | "failed to connect to Unix-domain socket `%s'", pathstr); | |
1107 | end: | |
1108 | if (fd == -1) close(fd); | |
1109 | put_cstring(jni, path, pathstr); | |
1110 | return (ret); | |
3a2f1a4b MW |
1111 | } |
1112 | ||
8eabb4ff MW |
1113 | static int check_buffer_bounds(JNIEnv *jni, const char *what, |
1114 | jbyteArray buf, jint start, jint len) | |
3a2f1a4b | 1115 | { |
3a2f1a4b | 1116 | jsize bufsz; |
8eabb4ff | 1117 | jclass cls; |
3a2f1a4b | 1118 | |
8eabb4ff MW |
1119 | cls = (*jni)->FindClass(jni, "[B"); assert(cls); |
1120 | if (!(*jni)->IsInstanceOf(jni, buf, cls)) { | |
1121 | except(jni, ARGERR, | |
1122 | "expected a byte array"); | |
1123 | return (-1); | |
1124 | } | |
3a2f1a4b | 1125 | bufsz = (*jni)->GetArrayLength(jni, buf); |
8eabb4ff MW |
1126 | if (start > bufsz) { |
1127 | except(jni, BOUNDSERR, | |
1128 | "bad %s buffer bounds: start %d > buffer size %d", start, bufsz); | |
1129 | return (-1); | |
1130 | } | |
1131 | if (len > bufsz - start) { | |
1132 | except(jni, BOUNDSERR, | |
1133 | "bad %s buffer bounds: length %d > remaining buffer size %d", | |
1134 | len, bufsz - start); | |
1135 | return (-1); | |
3a2f1a4b | 1136 | } |
8eabb4ff MW |
1137 | return (0); |
1138 | } | |
1139 | ||
1140 | JNIEXPORT void JNICALL JNIFUNC(send)(JNIEnv *jni, jobject cls, | |
1141 | wrapper wconn, jbyteArray buf, | |
1142 | jint start, jint len) | |
1143 | { | |
1144 | struct conn conn; | |
1145 | ssize_t n; | |
1146 | jbyte *p = 0; | |
1147 | ||
1148 | if (unwrap(jni, &conn, &conn_type, wconn)) goto end; | |
1149 | if (check_buffer_bounds(jni, "send", buf, start, len)) goto end; | |
3a2f1a4b | 1150 | |
8eabb4ff | 1151 | p = (*jni)->GetByteArrayElements(jni, buf, 0); |
3a2f1a4b MW |
1152 | if (!p) goto end; |
1153 | ||
1154 | while (len) { | |
8eabb4ff | 1155 | n = send(conn.fd, p + start, len, 0); |
3a2f1a4b | 1156 | if (n < 0) { |
8eabb4ff MW |
1157 | except_syserror(jni, SYSERR, |
1158 | errno, "failed to send on connection"); | |
3a2f1a4b MW |
1159 | goto end; |
1160 | } | |
1161 | start += n; len -= n; | |
1162 | } | |
1163 | ||
1164 | end: | |
1165 | if (p) (*jni)->ReleaseByteArrayElements(jni, buf, p, JNI_ABORT); | |
3a2f1a4b MW |
1166 | return; |
1167 | } | |
1168 | ||
8eabb4ff MW |
1169 | JNIEXPORT jint JNICALL JNIFUNC(recv)(JNIEnv *jni, jobject cls, |
1170 | wrapper wconn, jbyteArray buf, | |
1171 | jint start, jint len) | |
3a2f1a4b | 1172 | { |
8eabb4ff | 1173 | struct conn conn; |
3a2f1a4b MW |
1174 | jbyte *p = 0; |
1175 | jint rc = -1; | |
1176 | ||
8eabb4ff MW |
1177 | if (unwrap(jni, &conn, &conn_type, wconn)) goto end; |
1178 | if (check_buffer_bounds(jni, "send", buf, start, len)) goto end; | |
3a2f1a4b | 1179 | |
8eabb4ff | 1180 | p = (*jni)->GetByteArrayElements(jni, buf, 0); |
3a2f1a4b MW |
1181 | if (!p) goto end; |
1182 | ||
8eabb4ff | 1183 | rc = recv(conn.fd, p + start, len, 0); |
3a2f1a4b | 1184 | if (rc < 0) { |
8eabb4ff MW |
1185 | except_syserror(jni, SYSERR, |
1186 | errno, "failed to read from connection"); | |
3a2f1a4b MW |
1187 | goto end; |
1188 | } | |
1189 | if (!rc) rc = -1; | |
1190 | ||
1191 | end: | |
1192 | if (p) (*jni)->ReleaseByteArrayElements(jni, buf, p, 0); | |
3a2f1a4b MW |
1193 | return (rc); |
1194 | } | |
1195 | ||
8eabb4ff MW |
1196 | JNIEXPORT void JNICALL JNIFUNC(close)(JNIEnv *jni, jobject cls, |
1197 | wrapper wconn, jint how) | |
3a2f1a4b | 1198 | { |
8eabb4ff MW |
1199 | struct conn conn; |
1200 | int rc; | |
1201 | ||
1202 | if (unwrap(jni, &conn, &conn_type, wconn)) goto end; | |
1203 | if (conn.fd == -1) goto end; | |
1204 | ||
1205 | how &= CF_CLOSEMASK&~conn.f; | |
1206 | conn.f |= how; | |
1207 | if ((conn.f&CF_CLOSEMASK) == CF_CLOSEMASK) { | |
1208 | close(conn.fd); | |
1209 | conn.fd = -1; | |
3a2f1a4b | 1210 | } else { |
8eabb4ff MW |
1211 | if (how&CF_CLOSERD) shutdown(conn.fd, SHUT_RD); |
1212 | if (how&CF_CLOSEWR) shutdown(conn.fd, SHUT_WR); | |
3a2f1a4b | 1213 | } |
8eabb4ff | 1214 | rc = update_wrapper(jni, &conn_type, wconn, &conn); assert(!rc); |
3a2f1a4b MW |
1215 | |
1216 | end: | |
3a2f1a4b MW |
1217 | return; |
1218 | } | |
8eabb4ff MW |
1219 | |
1220 | /*----- That's all, folks -------------------------------------------------*/ |