| 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 | |
| 30 | #include <assert.h> |
| 31 | #include <ctype.h> |
| 32 | #include <errno.h> |
| 33 | #include <inttypes.h> |
| 34 | #include <stdarg.h> |
| 35 | #include <stdio.h> |
| 36 | #include <stdlib.h> |
| 37 | #include <string.h> |
| 38 | |
| 39 | #include <dirent.h> |
| 40 | #include <fcntl.h> |
| 41 | #include <netdb.h> |
| 42 | #include <unistd.h> |
| 43 | #include <sys/ioctl.h> |
| 44 | #include <sys/select.h> |
| 45 | #include <sys/socket.h> |
| 46 | #include <sys/stat.h> |
| 47 | #include <sys/sysmacros.h> |
| 48 | #include <sys/types.h> |
| 49 | #include <sys/un.h> |
| 50 | |
| 51 | #include <jni.h> |
| 52 | |
| 53 | //#include <linux/if.h> |
| 54 | #include <linux/if_tun.h> |
| 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> |
| 62 | |
| 63 | #define TUN_INTERNALS |
| 64 | #include <tripe.h> |
| 65 | |
| 66 | #undef sun |
| 67 | |
| 68 | /*----- Magic class names and similar -------------------------------------*/ |
| 69 | |
| 70 | /* The name decoration is horrific. Hide it. */ |
| 71 | #define JNIFUNC(f) Java_uk_org_distorted_tripe_sys_package_00024_##f |
| 72 | |
| 73 | /* The little class for bundling up error codes. */ |
| 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" |
| 81 | |
| 82 | /* The `stat' class. */ |
| 83 | #define STATCLS "uk/org/distorted/tripe/sys/package$FileInfo" |
| 84 | |
| 85 | /* Standard Java classes. */ |
| 86 | #define FDCLS "java/io/FileDescriptor" |
| 87 | #define STRCLS "java/lang/String" |
| 88 | #define RANDCLS "java/security/SecureRandom" |
| 89 | |
| 90 | /* Exception class names. */ |
| 91 | #define NULLERR "java/lang/NullPointerException" |
| 92 | #define TYPEERR "uk/org/distorted/tripe/sys/package$NativeObjectTypeException" |
| 93 | #define SYSERR "uk/org/distorted/tripe/sys/package$SystemError" |
| 94 | #define NAMEERR "uk/org/distorted/tripe/sys/package$NameResolutionException" |
| 95 | #define INITERR "uk/org/distorted/tripe/sys/package$InitializationException" |
| 96 | #define ARGERR "java/lang/IllegalArgumentException" |
| 97 | #define STERR "java/lang/IllegalStateException" |
| 98 | #define BOUNDSERR "java/lang/IndexOutOfBoundsException" |
| 99 | |
| 100 | /*----- Essential state ---------------------------------------------------*/ |
| 101 | |
| 102 | static JNIEnv *jni_tripe = 0; |
| 103 | |
| 104 | /*----- Miscellaneous utilities -------------------------------------------*/ |
| 105 | |
| 106 | static void vexcept(JNIEnv *jni, const char *clsname, |
| 107 | const char *msg, va_list *ap) |
| 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 { |
| 117 | dstr_vputf(&d, msg, ap); |
| 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); |
| 130 | vexcept(jni, clsname, msg, &ap); |
| 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 | |
| 190 | static void put_cstring(JNIEnv *jni, jbyteArray v, const char *p) |
| 191 | { if (p) (*jni)->ReleaseByteArrayElements(jni, v, (jbyte *)p, JNI_ABORT); } |
| 192 | |
| 193 | static void vexcept_syserror(JNIEnv *jni, const char *clsname, |
| 194 | int err, const char *msg, va_list *ap) |
| 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); |
| 205 | dstr_vputf(&d, msg, ap); |
| 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); |
| 218 | vexcept_syserror(jni, clsname, err, msg, &ap); |
| 219 | va_end(ap); |
| 220 | } |
| 221 | |
| 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 | |
| 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 | */ |
| 254 | |
| 255 | struct native_type { |
| 256 | const char *name; |
| 257 | size_t sz; |
| 258 | uint32 tag; |
| 259 | }; |
| 260 | |
| 261 | typedef jbyteArray wrapper; |
| 262 | |
| 263 | struct native_base { |
| 264 | uint32 tag; |
| 265 | }; |
| 266 | |
| 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 |
| 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))))) |
| 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***/ |
| 787 | }; |
| 788 | |
| 789 | JNIEXPORT jobject JNIFUNC(errtab)(JNIEnv *jni, jobject cls) |
| 790 | { |
| 791 | size_t i; |
| 792 | jclass eltcls; |
| 793 | jarray v; |
| 794 | jmethodID init; |
| 795 | jobject e; |
| 796 | |
| 797 | eltcls = |
| 798 | (*jni)->FindClass(jni, ERRENTCLS); |
| 799 | assert(eltcls); |
| 800 | v = (*jni)->NewObjectArray(jni, N(errtab), eltcls, 0); if (!v) return (0); |
| 801 | init = (*jni)->GetMethodID(jni, eltcls, "<init>", |
| 802 | "(L"STRCLS";I)V"); |
| 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 | |
| 817 | /*----- Messing with file descriptors -------------------------------------*/ |
| 818 | |
| 819 | static void fdguts(JNIEnv *jni, jclass *cls, jfieldID *fid) |
| 820 | { |
| 821 | *cls = (*jni)->FindClass(jni, FDCLS); assert(cls); |
| 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 | |
| 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' |
| 863 | * success/fail indicator, and throw away any more detailed information. |
| 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); |
| 884 | } |
| 885 | |
| 886 | JNIEXPORT void JNIFUNC(rmdir)(JNIEnv *jni, jobject cls, jobject path) |
| 887 | { |
| 888 | const char *pathstr = 0; |
| 889 | |
| 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) |
| 902 | { |
| 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); |
| 913 | } |
| 914 | |
| 915 | JNIEXPORT void JNIFUNC(chmod)(JNIEnv *jni, jobject cls, |
| 916 | jobject path, jint mode) |
| 917 | { |
| 918 | const char *pathstr = 0; |
| 919 | |
| 920 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
| 921 | if (chmod(pathstr, mode)) { |
| 922 | except_syserror(jni, SYSERR, errno, |
| 923 | "failed st permissions on `%s'", pathstr); |
| 924 | goto end; |
| 925 | } |
| 926 | end: |
| 927 | put_cstring(jni, path, pathstr); |
| 928 | } |
| 929 | |
| 930 | JNIEXPORT void JNIFUNC(mkfile)(JNIEnv *jni, jobject cls, |
| 931 | jobject path, jint mode) |
| 932 | { |
| 933 | const char *pathstr = 0; |
| 934 | int fd = -1; |
| 935 | |
| 936 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
| 937 | fd = open(pathstr, O_WRONLY | O_CREAT | O_EXCL, mode); |
| 938 | if (fd < 0) { |
| 939 | except_syserror(jni, SYSERR, errno, |
| 940 | "failed to create fresh file `%s'", pathstr); |
| 941 | goto end; |
| 942 | } |
| 943 | end: |
| 944 | if (fd != -1) close(fd); |
| 945 | put_cstring(jni, path, pathstr); |
| 946 | } |
| 947 | |
| 948 | JNIEXPORT void JNIFUNC(rename)(JNIEnv *jni, jobject cls, |
| 949 | jobject from, jobject to) |
| 950 | { |
| 951 | const char *fromstr = 0, *tostr = 0; |
| 952 | |
| 953 | fromstr = get_cstring(jni, from); if (!fromstr) goto end; |
| 954 | tostr = get_cstring(jni, to); if (!tostr) goto end; |
| 955 | if (rename(fromstr, tostr)) { |
| 956 | except_syserror(jni, SYSERR, errno, |
| 957 | "failed to rename `%s' as `%s'", fromstr, tostr); |
| 958 | goto end; |
| 959 | } |
| 960 | end: |
| 961 | put_cstring(jni, from, fromstr); |
| 962 | put_cstring(jni, to, tostr); |
| 963 | } |
| 964 | |
| 965 | #define LKF_EXCL 0x1000u |
| 966 | #define LKF_WAIT 0x2000u |
| 967 | struct lockf { |
| 968 | struct native_base _base; |
| 969 | int fd; |
| 970 | }; |
| 971 | static struct native_type lockf_type = |
| 972 | { "lock", sizeof(struct lockf), 0xb2648926}; |
| 973 | JNIEXPORT wrapper JNIFUNC(lock)(JNIEnv *jni, jobject cls, |
| 974 | jobject path, jint flags) |
| 975 | { |
| 976 | const char *pathstr = 0; |
| 977 | int fd = -1; |
| 978 | struct flock l; |
| 979 | struct lockf lk; |
| 980 | struct stat st0, st1; |
| 981 | int f; |
| 982 | wrapper r = 0; |
| 983 | |
| 984 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
| 985 | |
| 986 | again: |
| 987 | fd = open(pathstr, O_RDWR | O_CREAT, flags&07777); if (fd < 0) goto err; |
| 988 | if (fstat(fd, &st0)) goto err; |
| 989 | f = fcntl(fd, F_GETFD); if (f < 0) goto err; |
| 990 | if (fcntl(fd, F_SETFD, f | FD_CLOEXEC)) goto err; |
| 991 | l.l_type = (flags&LKF_EXCL) ? F_WRLCK : F_RDLCK; |
| 992 | l.l_whence = SEEK_SET; |
| 993 | l.l_start = 0; |
| 994 | l.l_len = 0; |
| 995 | if (fcntl(fd, (flags&LKF_WAIT) ? F_SETLKW : F_SETLK, &l)) goto err; |
| 996 | if (stat(pathstr, &st1)) |
| 997 | { if (errno == ENOENT) goto again; else goto err; } |
| 998 | if (st0.st_dev != st1.st_dev || st0.st_ino != st1.st_ino) |
| 999 | { close(fd); fd = -1; goto again; } |
| 1000 | |
| 1001 | INIT_NATIVE(lockf, &lk); lk.fd = fd; fd = -1; |
| 1002 | r = wrap(jni, &lockf_type, &lk); |
| 1003 | goto end; |
| 1004 | |
| 1005 | err: |
| 1006 | except_syserror(jni, SYSERR, errno, "failed to lock file `%s'", pathstr); |
| 1007 | end: |
| 1008 | if (fd != -1) close(fd); |
| 1009 | put_cstring(jni, path, pathstr); |
| 1010 | return (r); |
| 1011 | } |
| 1012 | |
| 1013 | JNIEXPORT void JNIFUNC(unlock)(JNIEnv *jni, jobject cls, wrapper wlk) |
| 1014 | { |
| 1015 | struct lockf lk; |
| 1016 | struct flock l; |
| 1017 | int rc; |
| 1018 | |
| 1019 | if (unwrap(jni, &lk, &lockf_type, wlk)) goto end; |
| 1020 | if (lk.fd == -1) goto end; |
| 1021 | l.l_type = F_UNLCK; |
| 1022 | l.l_whence = SEEK_SET; |
| 1023 | l.l_start = 0; |
| 1024 | l.l_len = 0; |
| 1025 | if (fcntl(lk.fd, F_SETLK, &l)) goto end; |
| 1026 | close(lk.fd); lk.fd = -1; |
| 1027 | rc = update_wrapper(jni, &lockf_type, wlk, &lk); assert(!rc); |
| 1028 | end:; |
| 1029 | } |
| 1030 | |
| 1031 | static jlong xlttimespec(const struct timespec *ts) |
| 1032 | { return (1000*(jlong)ts->tv_sec + ts->tv_nsec/1000000); } |
| 1033 | |
| 1034 | static jobject xltstat(JNIEnv *jni, const struct stat *st) |
| 1035 | { |
| 1036 | jclass cls; |
| 1037 | jmethodID init; |
| 1038 | jint modehack; |
| 1039 | |
| 1040 | modehack = st->st_mode&07777; |
| 1041 | if (S_ISFIFO(st->st_mode)) modehack |= 0010000; |
| 1042 | else if (S_ISCHR(st->st_mode)) modehack |= 0020000; |
| 1043 | else if (S_ISDIR(st->st_mode)) modehack |= 0040000; |
| 1044 | else if (S_ISBLK(st->st_mode)) modehack |= 0060000; |
| 1045 | else if (S_ISREG(st->st_mode)) modehack |= 0100000; |
| 1046 | else if (S_ISLNK(st->st_mode)) modehack |= 0120000; |
| 1047 | else if (S_ISSOCK(st->st_mode)) modehack |= 0140000; |
| 1048 | |
| 1049 | cls = (*jni)->FindClass(jni, STATCLS); assert(cls); |
| 1050 | init = (*jni)->GetMethodID(jni, cls, "<init>", "(IIJIIIIIIJIJJJJ)V"); |
| 1051 | assert(init); |
| 1052 | return ((*jni)->NewObject(jni, cls, init, |
| 1053 | (jint)major(st->st_dev), (jint)minor(st->st_dev), |
| 1054 | (jlong)st->st_ino, |
| 1055 | modehack, |
| 1056 | (jint)st->st_nlink, |
| 1057 | (jint)st->st_uid, (jint)st->st_gid, |
| 1058 | (jint)major(st->st_rdev), (jint)minor(st->st_rdev), |
| 1059 | (jlong)st->st_size, |
| 1060 | (jint)st->st_blksize, (jlong)st->st_blocks, |
| 1061 | xlttimespec(&st->st_atim), |
| 1062 | xlttimespec(&st->st_mtim), |
| 1063 | xlttimespec(&st->st_ctim))); |
| 1064 | } |
| 1065 | |
| 1066 | JNIEXPORT jobject JNIFUNC(stat)(JNIEnv *jni, jobject cls, jobject path) |
| 1067 | { |
| 1068 | jobject r = 0; |
| 1069 | const char *pathstr = 0; |
| 1070 | struct stat st; |
| 1071 | |
| 1072 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
| 1073 | if (stat(pathstr, &st)) { |
| 1074 | except_syserror(jni, SYSERR, errno, |
| 1075 | "failed to read information about `%s'", pathstr); |
| 1076 | goto end; |
| 1077 | } |
| 1078 | r = xltstat(jni, &st); |
| 1079 | end: |
| 1080 | put_cstring(jni, path, pathstr); |
| 1081 | return (r); |
| 1082 | } |
| 1083 | |
| 1084 | JNIEXPORT jobject JNIFUNC(lstat)(JNIEnv *jni, jobject cls, jobject path) |
| 1085 | { |
| 1086 | jobject r = 0; |
| 1087 | const char *pathstr = 0; |
| 1088 | struct stat st; |
| 1089 | |
| 1090 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
| 1091 | if (lstat(pathstr, &st)) { |
| 1092 | except_syserror(jni, SYSERR, errno, |
| 1093 | "failed to read information about `%s'", pathstr); |
| 1094 | goto end; |
| 1095 | } |
| 1096 | r = xltstat(jni, &st); |
| 1097 | end: |
| 1098 | put_cstring(jni, path, pathstr); |
| 1099 | return (r); |
| 1100 | } |
| 1101 | |
| 1102 | struct dir { |
| 1103 | struct native_base _base; |
| 1104 | DIR *d; |
| 1105 | }; |
| 1106 | static const struct native_type dir_type = |
| 1107 | { "dir", sizeof(struct dir), 0x0f5ca477 }; |
| 1108 | |
| 1109 | JNIEXPORT jobject JNIFUNC(opendir)(JNIEnv *jni, jobject cls, jobject path) |
| 1110 | { |
| 1111 | const char *pathstr = 0; |
| 1112 | struct dir dir; |
| 1113 | wrapper r = 0; |
| 1114 | |
| 1115 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
| 1116 | INIT_NATIVE(dir, &dir); |
| 1117 | dir.d = opendir(pathstr); |
| 1118 | if (!dir.d) { |
| 1119 | except_syserror(jni, SYSERR, errno, |
| 1120 | "failed to open directory `%s'", pathstr); |
| 1121 | goto end; |
| 1122 | } |
| 1123 | r = wrap(jni, &dir_type, &dir); |
| 1124 | end: |
| 1125 | put_cstring(jni, path, pathstr); |
| 1126 | return (r); |
| 1127 | } |
| 1128 | |
| 1129 | JNIEXPORT jbyteArray JNIFUNC(readdir)(JNIEnv *jni, jobject cls, |
| 1130 | jobject path, jobject wdir) |
| 1131 | { |
| 1132 | const char *pathstr = 0; |
| 1133 | struct dir dir; |
| 1134 | struct dirent *d; |
| 1135 | jbyteArray r = 0; |
| 1136 | |
| 1137 | if (unwrap(jni, &dir, &dir_type, wdir)) goto end; |
| 1138 | if (!dir.d) { except(jni, ARGERR, "directory has been closed"); goto end; } |
| 1139 | errno = 0; d = readdir(dir.d); |
| 1140 | if (errno) { |
| 1141 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
| 1142 | except_syserror(jni, SYSERR, errno, |
| 1143 | "failed to read directory `%s'", pathstr); |
| 1144 | goto end; |
| 1145 | } |
| 1146 | if (d) r = wrap_cstring(jni, d->d_name); |
| 1147 | end: |
| 1148 | put_cstring(jni, path, pathstr); |
| 1149 | return (r); |
| 1150 | } |
| 1151 | |
| 1152 | JNIEXPORT void JNIFUNC(closedir)(JNIEnv *jni, jobject cls, |
| 1153 | jobject path, jobject wdir) |
| 1154 | { |
| 1155 | const char *pathstr = 0; |
| 1156 | struct dir dir; |
| 1157 | |
| 1158 | if (unwrap(jni, &dir, &dir_type, wdir)) goto end; |
| 1159 | if (!dir.d) goto end; |
| 1160 | if (closedir(dir.d)) { |
| 1161 | pathstr = get_cstring(jni, path); if (!pathstr) goto end; |
| 1162 | except_syserror(jni, SYSERR, errno, |
| 1163 | "failed to close directory `%s'", pathstr); |
| 1164 | goto end; |
| 1165 | } |
| 1166 | dir.d = 0; |
| 1167 | if (update_wrapper(jni, &dir_type, wdir, &dir)) goto end; |
| 1168 | end: |
| 1169 | put_cstring(jni, path, pathstr); |
| 1170 | } |
| 1171 | |
| 1172 | /*----- Triggers ----------------------------------------------------------*/ |
| 1173 | |
| 1174 | /* A trigger is a gadget for waking up a thread which is blocking on I/O, |
| 1175 | * and it's used to implement interruptability. |
| 1176 | * |
| 1177 | * Really, a trigger is a pipe. A `blocking' I/O operation secretly uses |
| 1178 | * select(2) to block on the descriptor of interest /and/ the read side of |
| 1179 | * the trigger pipe. To wake up a thread that's blocked, we just write a |
| 1180 | * byte (nobody cares /which/ byte) to the write end. |
| 1181 | */ |
| 1182 | |
| 1183 | struct trigger { |
| 1184 | struct native_base _base; |
| 1185 | int rfd, wfd; |
| 1186 | }; |
| 1187 | static const struct native_type trigger_type = |
| 1188 | { "trigger", sizeof(struct trigger), 0x65ffd8b4 }; |
| 1189 | |
| 1190 | JNIEXPORT wrapper JNICALL JNIFUNC(make_1trigger)(JNIEnv *jni, jobject cls) |
| 1191 | { |
| 1192 | struct trigger trig; |
| 1193 | int fd[2]; |
| 1194 | int i; |
| 1195 | wrapper ret = 0; |
| 1196 | |
| 1197 | fd[0] = fd[1] = -1; |
| 1198 | if (pipe(fd)) { |
| 1199 | except_syserror(jni, SYSERR, errno, "failed to create pipe"); |
| 1200 | goto end; |
| 1201 | } |
| 1202 | for (i = 0; i < 2; i++) { |
| 1203 | if (set_nonblocking(jni, fd[i], 1) < 0 || set_closeonexec(jni, fd[i])) |
| 1204 | goto end; |
| 1205 | } |
| 1206 | |
| 1207 | INIT_NATIVE(trigger, &trig); |
| 1208 | trig.rfd = fd[0]; fd[0] = -1; |
| 1209 | trig.wfd = fd[1]; fd[1] = -1; |
| 1210 | ret = wrap(jni, &trigger_type, &trig); |
| 1211 | |
| 1212 | end: |
| 1213 | for (i = 0; i < 2; i++) |
| 1214 | if (fd[i] != -1) close(fd[i]); |
| 1215 | return (ret); |
| 1216 | } |
| 1217 | |
| 1218 | JNIEXPORT void JNICALL JNIFUNC(destroy_1trigger)(JNIEnv *jni, jobject cls, |
| 1219 | wrapper wtrig) |
| 1220 | { |
| 1221 | struct trigger trig; |
| 1222 | |
| 1223 | if (unwrap(jni, &trig, &trigger_type, wtrig)) return; |
| 1224 | if (trig.rfd != -1) { close(trig.rfd); trig.rfd = -1; } |
| 1225 | if (trig.wfd != -1) { close(trig.wfd); trig.wfd = -1; } |
| 1226 | update_wrapper(jni, &trigger_type, wtrig, &trig); |
| 1227 | } |
| 1228 | |
| 1229 | JNIEXPORT void JNICALL JNIFUNC(reset_1trigger)(JNIEnv *jni, jobject cls, |
| 1230 | wrapper wtrig) |
| 1231 | { |
| 1232 | struct trigger trig; |
| 1233 | char buf[64]; |
| 1234 | ssize_t n; |
| 1235 | |
| 1236 | if (unwrap(jni, &trig, &trigger_type, wtrig)) return; |
| 1237 | for (;;) { |
| 1238 | n = read(trig.rfd, buf, sizeof(buf)); |
| 1239 | if (n > 0) continue; |
| 1240 | assert(n < 0); |
| 1241 | if (errno == EAGAIN || errno == EWOULDBLOCK) break; |
| 1242 | else { |
| 1243 | except_syserror(jni, SYSERR, errno, "failed to reset trigger"); |
| 1244 | break; |
| 1245 | } |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | JNIEXPORT void JNICALL JNIFUNC(trigger)(JNIEnv *jni, jobject cls, |
| 1250 | wrapper wtrig) |
| 1251 | { |
| 1252 | struct trigger trig; |
| 1253 | ssize_t n; |
| 1254 | char c = 0; |
| 1255 | |
| 1256 | if (unwrap(jni, &trig, &trigger_type, wtrig)) return; |
| 1257 | n = write(trig.wfd, &c, 1); |
| 1258 | if (n < 0 && errno != EAGAIN && errno != EWOULDBLOCK) |
| 1259 | except_syserror(jni, SYSERR, errno, "failed to pull trigger"); |
| 1260 | } |
| 1261 | |
| 1262 | /*----- A tunnel supplied by Java -----------------------------------------*/ |
| 1263 | |
| 1264 | struct tunnel { |
| 1265 | const tunnel_ops *ops; |
| 1266 | sel_file f; |
| 1267 | struct peer *p; |
| 1268 | }; |
| 1269 | |
| 1270 | static const struct tunnel_ops tun_java; |
| 1271 | |
| 1272 | static int t_init(void) { return (0); } |
| 1273 | |
| 1274 | static void t_read(int fd, unsigned mode, void *v) |
| 1275 | { |
| 1276 | tunnel *t = v; |
| 1277 | ssize_t n; |
| 1278 | buf b; |
| 1279 | |
| 1280 | n = read(fd, buf_i, sizeof(buf_i)); |
| 1281 | if (n < 0) { |
| 1282 | a_warn("TUN", "%s", p_ifname(t->p), "java", |
| 1283 | "read-error", "?ERRNO", A_END); |
| 1284 | return; |
| 1285 | } |
| 1286 | IF_TRACING(T_TUNNEL, { |
| 1287 | trace(T_TUNNEL, "tun-java: packet arrived"); |
| 1288 | trace_block(T_PACKET, "tunnel: packet contents", buf_i, n); |
| 1289 | }) |
| 1290 | buf_init(&b, buf_i, n); |
| 1291 | p_tun(t->p, &b); |
| 1292 | } |
| 1293 | |
| 1294 | static tunnel *t_create(peer *p, int fd, char **ifn) |
| 1295 | { |
| 1296 | JNIEnv *jni = jni_tripe; |
| 1297 | tunnel *t = 0; |
| 1298 | const char *name = p_name(p); |
| 1299 | jbyteArray jname; |
| 1300 | size_t n = strlen(p_name(p)); |
| 1301 | jclass cls, metacls; |
| 1302 | jstring jclsname, jexcmsg; |
| 1303 | const char *clsname, *excmsg; |
| 1304 | jmethodID mid; |
| 1305 | jthrowable exc; |
| 1306 | |
| 1307 | assert(jni); |
| 1308 | |
| 1309 | jname = wrap_cstring(jni, name); |
| 1310 | cls = (*jni)->FindClass(jni, SYSCLS); assert(cls); |
| 1311 | mid = (*jni)->GetStaticMethodID(jni, cls, "getTunnelFd", "([B)I"); |
| 1312 | assert(mid); |
| 1313 | fd = (*jni)->CallStaticIntMethod(jni, cls, mid, jname); |
| 1314 | |
| 1315 | exc = (*jni)->ExceptionOccurred(jni); |
| 1316 | if (exc) { |
| 1317 | cls = (*jni)->GetObjectClass(jni, exc); |
| 1318 | metacls = (*jni)->GetObjectClass(jni, cls); |
| 1319 | mid = (*jni)->GetMethodID(jni, metacls, |
| 1320 | "getName", "()L"STRCLS";"); |
| 1321 | assert(mid); |
| 1322 | jclsname = (*jni)->CallObjectMethod(jni, cls, mid); |
| 1323 | clsname = (*jni)->GetStringUTFChars(jni, jclsname, 0); |
| 1324 | mid = (*jni)->GetMethodID(jni, cls, |
| 1325 | "getMessage", "()L"STRCLS";"); |
| 1326 | jexcmsg = (*jni)->CallObjectMethod(jni, exc, mid); |
| 1327 | excmsg = (*jni)->GetStringUTFChars(jni, jexcmsg, 0); |
| 1328 | a_warn("TUN", "-", "java", "get-tunnel-fd-failed", |
| 1329 | "%s", clsname, "%s", excmsg, A_END); |
| 1330 | (*jni)->ReleaseStringUTFChars(jni, jclsname, clsname); |
| 1331 | (*jni)->ReleaseStringUTFChars(jni, jexcmsg, excmsg); |
| 1332 | (*jni)->ExceptionClear(jni); |
| 1333 | goto end; |
| 1334 | } |
| 1335 | |
| 1336 | t = CREATE(tunnel); |
| 1337 | t->ops = &tun_java; |
| 1338 | t->p = p; |
| 1339 | sel_initfile(&sel, &t->f, fd, SEL_READ, t_read, t); |
| 1340 | |
| 1341 | if (!*ifn) { |
| 1342 | *ifn = xmalloc(n + 5); |
| 1343 | sprintf(*ifn, "vpn-%s", name); |
| 1344 | } |
| 1345 | |
| 1346 | end: |
| 1347 | return (t); |
| 1348 | } |
| 1349 | |
| 1350 | static void t_inject(tunnel *t, buf *b) |
| 1351 | { |
| 1352 | IF_TRACING(T_TUNNEL, { |
| 1353 | trace(T_TUNNEL, "tun-java: inject decrypted packet"); |
| 1354 | trace_block(T_PACKET, "tunnel: packet contents", BBASE(b), BLEN(b)); |
| 1355 | }) |
| 1356 | DISCARD(write(t->f.fd, BBASE(b), BLEN(b))); |
| 1357 | } |
| 1358 | |
| 1359 | static void t_destroy(tunnel *t) |
| 1360 | { sel_rmfile(&t->f); close(t->f.fd); DESTROY(t); } |
| 1361 | |
| 1362 | static const struct tunnel_ops tun_java = { |
| 1363 | "java", 0, |
| 1364 | /* init */ t_init, |
| 1365 | /* create */ t_create, |
| 1366 | /* setifname */ 0, |
| 1367 | /* inject */ t_inject, |
| 1368 | /* destroy */ t_destroy |
| 1369 | }; |
| 1370 | |
| 1371 | |
| 1372 | JNIEXPORT jint JNICALL JNIFUNC(open_1tun)(JNIEnv *jni, jobject cls) |
| 1373 | { |
| 1374 | int ret = -1; |
| 1375 | int fd = -1; |
| 1376 | struct ifreq iff; |
| 1377 | |
| 1378 | if ((fd = open("/dev/net/tun", O_RDWR)) < 0) { |
| 1379 | except_syserror(jni, SYSERR, errno, "failed to open tunnel device"); |
| 1380 | goto end; |
| 1381 | } |
| 1382 | |
| 1383 | if (set_nonblocking(jni, fd, 1) || set_closeonexec(jni, fd)) goto end; |
| 1384 | |
| 1385 | memset(&iff, 0, sizeof(iff)); |
| 1386 | iff.ifr_name[0] = 0; |
| 1387 | iff.ifr_flags = IFF_TUN | IFF_NO_PI; |
| 1388 | if (ioctl(fd, TUNSETIFF, &iff) < 0) { |
| 1389 | except_syserror(jni, SYSERR, errno, "failed to configure tunnel device"); |
| 1390 | goto end; |
| 1391 | } |
| 1392 | |
| 1393 | ret = fd; fd = -1; |
| 1394 | |
| 1395 | end: |
| 1396 | if (fd != -1) close(fd); |
| 1397 | return (ret); |
| 1398 | } |
| 1399 | |
| 1400 | /*----- A custom noise source ---------------------------------------------*/ |
| 1401 | |
| 1402 | static void javanoise(rand_pool *r) |
| 1403 | { |
| 1404 | JNIEnv *jni = jni_tripe; |
| 1405 | jclass cls; |
| 1406 | jmethodID mid; |
| 1407 | jbyteArray v; |
| 1408 | jbyte *p; |
| 1409 | jsize n; |
| 1410 | |
| 1411 | noise_devrandom(r); |
| 1412 | |
| 1413 | assert(jni); |
| 1414 | cls = (*jni)->FindClass(jni, RANDCLS); assert(cls); |
| 1415 | mid = (*jni)->GetStaticMethodID(jni, cls, "getSeed", "(I)[B"); assert(mid); |
| 1416 | v = (*jni)->CallStaticObjectMethod(jni, cls, mid, 32); |
| 1417 | if (v) { |
| 1418 | n = (*jni)->GetArrayLength(jni, v); |
| 1419 | p = (*jni)->GetByteArrayElements(jni, v, 0); |
| 1420 | rand_add(r, p, n, n); |
| 1421 | (*jni)->ReleaseByteArrayElements(jni, v, p, JNI_ABORT); |
| 1422 | } |
| 1423 | if ((*jni)->ExceptionOccurred(jni)) { |
| 1424 | (*jni)->ExceptionDescribe(jni); |
| 1425 | (*jni)->ExceptionClear(jni); |
| 1426 | } |
| 1427 | } |
| 1428 | |
| 1429 | static const rand_source javasource = { javanoise, noise_timer }; |
| 1430 | |
| 1431 | /*----- Embedding the TrIPE server ----------------------------------------*/ |
| 1432 | |
| 1433 | static void lock_tripe(JNIEnv *jni) |
| 1434 | { |
| 1435 | jclass cls = (*jni)->FindClass(jni, LOCKCLS); assert(cls); |
| 1436 | (*jni)->MonitorEnter(jni, cls); |
| 1437 | } |
| 1438 | |
| 1439 | static void unlock_tripe(JNIEnv *jni) |
| 1440 | { |
| 1441 | jclass cls = (*jni)->FindClass(jni, LOCKCLS); assert(cls); |
| 1442 | (*jni)->MonitorExit(jni, cls); |
| 1443 | } |
| 1444 | |
| 1445 | #define STATES(_) \ |
| 1446 | _(INIT) \ |
| 1447 | _(RESOLVE) \ |
| 1448 | _(KEYS) \ |
| 1449 | _(BIND) \ |
| 1450 | _(READY) \ |
| 1451 | _(RUNNING) |
| 1452 | |
| 1453 | enum { |
| 1454 | #define DEFTAG(st) st, |
| 1455 | STATES(DEFTAG) |
| 1456 | #undef DEFTAG |
| 1457 | MAXSTATE |
| 1458 | }; |
| 1459 | |
| 1460 | static const char *statetab[] = { |
| 1461 | #define DEFNAME(st) #st, |
| 1462 | STATES(DEFNAME) |
| 1463 | #undef DEFNAME |
| 1464 | }; |
| 1465 | |
| 1466 | static unsigned state = INIT; |
| 1467 | static int clientsk = -1; |
| 1468 | |
| 1469 | static const char *statename(unsigned st) |
| 1470 | { |
| 1471 | if (st >= MAXSTATE) return ("<invalid>"); |
| 1472 | else return (statetab[st]); |
| 1473 | } |
| 1474 | |
| 1475 | static int ensure_state(JNIEnv *jni, unsigned want) |
| 1476 | { |
| 1477 | unsigned cur; |
| 1478 | |
| 1479 | lock_tripe(jni); |
| 1480 | cur = state; |
| 1481 | unlock_tripe(jni); |
| 1482 | |
| 1483 | if (cur != want) { |
| 1484 | except(jni, STERR, "server is in state %s (%u), not %s (%u)", |
| 1485 | statename(cur), cur, statename(want), want); |
| 1486 | return (-1); |
| 1487 | } |
| 1488 | return (0); |
| 1489 | } |
| 1490 | |
| 1491 | JNIEXPORT void JNICALL JNIFUNC(base_1init)(JNIEnv *jni, jobject cls) |
| 1492 | { |
| 1493 | int fd[2]; |
| 1494 | int i; |
| 1495 | |
| 1496 | for (i = 0; i < N(fd); i++) fd[i] = -1; |
| 1497 | |
| 1498 | lock_tripe(jni); |
| 1499 | jni_tripe = jni; |
| 1500 | if (ensure_state(jni, INIT)) goto end; |
| 1501 | |
| 1502 | if (socketpair(PF_UNIX, SOCK_STREAM, 0, fd)) { |
| 1503 | except_syserror(jni, SYSERR, errno, "failed to create socket pair"); |
| 1504 | goto end; |
| 1505 | } |
| 1506 | |
| 1507 | clientsk = fd[0]; fd[0] = -1; |
| 1508 | |
| 1509 | rand_noisesrc(RAND_GLOBAL, &javasource); |
| 1510 | rand_seed(RAND_GLOBAL, MAXHASHSZ); |
| 1511 | lp_init(); |
| 1512 | a_create(fd[1], fd[1], AF_NOTE | AF_WARN | AF_TRACE); fd[1] = -1; |
| 1513 | a_switcherr(); |
| 1514 | p_addtun(&tun_java); p_setdflttun(&tun_java); |
| 1515 | p_init(); |
| 1516 | kx_init(); |
| 1517 | |
| 1518 | state++; |
| 1519 | |
| 1520 | end: |
| 1521 | for (i = 0; i < N(fd); i++) if (fd[i] != -1) close(fd[i]); |
| 1522 | jni_tripe = 0; |
| 1523 | unlock_tripe(jni); |
| 1524 | } |
| 1525 | |
| 1526 | JNIEXPORT void JNICALL JNIFUNC(setup_1resolver)(JNIEnv *jni, jobject cls) |
| 1527 | { |
| 1528 | lock_tripe(jni); |
| 1529 | if (ensure_state(jni, RESOLVE)) goto end; |
| 1530 | |
| 1531 | if (a_init()) |
| 1532 | { except(jni, INITERR, "failed to initialize resolver"); return; } |
| 1533 | |
| 1534 | state++; |
| 1535 | |
| 1536 | end: |
| 1537 | unlock_tripe(jni); |
| 1538 | } |
| 1539 | |
| 1540 | JNIEXPORT void JNICALL JNIFUNC(load_1keys)(JNIEnv *jni, jobject cls, |
| 1541 | jobject privstr, jobject pubstr, |
| 1542 | jobject tagstr) |
| 1543 | { |
| 1544 | const char *priv = 0, *pub = 0, *tag = 0; |
| 1545 | |
| 1546 | lock_tripe(jni); |
| 1547 | if (ensure_state(jni, KEYS)) return; |
| 1548 | |
| 1549 | priv = get_cstring(jni, privstr); if (!priv) goto end; |
| 1550 | pub = get_cstring(jni, pubstr); if (!pub) goto end; |
| 1551 | tag = get_cstring(jni, tagstr); if (!tag) goto end; |
| 1552 | |
| 1553 | if (km_init(priv, pub, tag)) |
| 1554 | { except(jni, INITERR, "failed to load initial keys"); goto end; } |
| 1555 | |
| 1556 | state++; |
| 1557 | |
| 1558 | end: |
| 1559 | put_cstring(jni, privstr, priv); |
| 1560 | put_cstring(jni, pubstr, pub); |
| 1561 | put_cstring(jni, tagstr, tag); |
| 1562 | unlock_tripe(jni); |
| 1563 | } |
| 1564 | |
| 1565 | JNIEXPORT void JNICALL JNIFUNC(unload_1keys)(JNIEnv *jni, jobject cls) |
| 1566 | { |
| 1567 | lock_tripe(jni); |
| 1568 | if (ensure_state(jni, KEYS + 1)) goto end; |
| 1569 | |
| 1570 | km_clear(); |
| 1571 | |
| 1572 | state--; |
| 1573 | |
| 1574 | end: |
| 1575 | unlock_tripe(jni); |
| 1576 | } |
| 1577 | |
| 1578 | JNIEXPORT void JNICALL JNIFUNC(bind)(JNIEnv *jni, jobject cls, |
| 1579 | jbyteArray hoststr, jbyteArray svcstr) |
| 1580 | { |
| 1581 | const char *host = 0, *svc = 0; |
| 1582 | struct addrinfo hint, *ai = 0; |
| 1583 | int err; |
| 1584 | |
| 1585 | lock_tripe(jni); |
| 1586 | if (ensure_state(jni, BIND)) goto end; |
| 1587 | |
| 1588 | if (hoststr) { host = get_cstring(jni, hoststr); if (!host) goto end; } |
| 1589 | svc = get_cstring(jni, svcstr); if (!svc) goto end; |
| 1590 | |
| 1591 | hint.ai_socktype = SOCK_DGRAM; |
| 1592 | hint.ai_family = AF_UNSPEC; |
| 1593 | hint.ai_protocol = IPPROTO_UDP; |
| 1594 | hint.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; |
| 1595 | err = getaddrinfo(host, svc, &hint, &ai); |
| 1596 | if (err) { |
| 1597 | except(jni, NAMEERR, "failed to resolve %c%s%c, port `%s': %s", |
| 1598 | host ? '`' : '<', host ? host : "nil", host ? '\'' : '>', |
| 1599 | svc, gai_strerror(err)); |
| 1600 | goto end; |
| 1601 | } |
| 1602 | |
| 1603 | if (p_bind(ai)) |
| 1604 | { except(jni, INITERR, "failed to bind master socket"); goto end; } |
| 1605 | |
| 1606 | state++; |
| 1607 | |
| 1608 | end: |
| 1609 | if (ai) freeaddrinfo(ai); |
| 1610 | put_cstring(jni, hoststr, host); |
| 1611 | put_cstring(jni, svcstr, svc); |
| 1612 | unlock_tripe(jni); |
| 1613 | } |
| 1614 | |
| 1615 | JNIEXPORT void JNICALL JNIFUNC(unbind)(JNIEnv *jni, jobject cls) |
| 1616 | { |
| 1617 | lock_tripe(jni); |
| 1618 | if (ensure_state(jni, BIND + 1)) goto end; |
| 1619 | |
| 1620 | p_unbind(); |
| 1621 | |
| 1622 | state--; |
| 1623 | |
| 1624 | end: |
| 1625 | unlock_tripe(jni); |
| 1626 | } |
| 1627 | |
| 1628 | JNIEXPORT void JNICALL JNIFUNC(mark)(JNIEnv *jni, jobject cls, jint seq) |
| 1629 | { |
| 1630 | lock_tripe(jni); |
| 1631 | a_notify("MARK", "%d", seq, A_END); |
| 1632 | unlock_tripe(jni); |
| 1633 | } |
| 1634 | |
| 1635 | JNIEXPORT void JNICALL JNIFUNC(run)(JNIEnv *jni, jobject cls) |
| 1636 | { |
| 1637 | lock_tripe(jni); |
| 1638 | if (ensure_state(jni, READY)) goto end; |
| 1639 | assert(!jni_tripe); |
| 1640 | jni_tripe = jni; |
| 1641 | state = RUNNING; |
| 1642 | unlock_tripe(jni); |
| 1643 | |
| 1644 | lp_run(); |
| 1645 | |
| 1646 | lock_tripe(jni); |
| 1647 | jni_tripe = 0; |
| 1648 | state = READY; |
| 1649 | |
| 1650 | end: |
| 1651 | unlock_tripe(jni); |
| 1652 | } |
| 1653 | |
| 1654 | static int check_buffer_bounds(JNIEnv *jni, const char *what, |
| 1655 | jbyteArray buf, jint start, jint len) |
| 1656 | { |
| 1657 | jsize bufsz; |
| 1658 | jclass cls; |
| 1659 | |
| 1660 | cls = (*jni)->FindClass(jni, "[B"); assert(cls); |
| 1661 | if (!(*jni)->IsInstanceOf(jni, buf, cls)) { |
| 1662 | except(jni, ARGERR, |
| 1663 | "expected a byte array"); |
| 1664 | return (-1); |
| 1665 | } |
| 1666 | bufsz = (*jni)->GetArrayLength(jni, buf); |
| 1667 | if (start > bufsz) { |
| 1668 | except(jni, BOUNDSERR, |
| 1669 | "bad %s buffer bounds: start %d > buffer size %d", start, bufsz); |
| 1670 | return (-1); |
| 1671 | } |
| 1672 | if (len > bufsz - start) { |
| 1673 | except(jni, BOUNDSERR, |
| 1674 | "bad %s buffer bounds: length %d > remaining buffer size %d", |
| 1675 | len, bufsz - start); |
| 1676 | return (-1); |
| 1677 | } |
| 1678 | return (0); |
| 1679 | } |
| 1680 | |
| 1681 | JNIEXPORT void JNICALL JNIFUNC(send)(JNIEnv *jni, jobject cls, |
| 1682 | jbyteArray buf, |
| 1683 | jint start, jint len, |
| 1684 | wrapper wtrig) |
| 1685 | { |
| 1686 | struct trigger trig; |
| 1687 | int rc, maxfd; |
| 1688 | ssize_t n; |
| 1689 | fd_set rfds, wfds; |
| 1690 | jbyte *p = 0; |
| 1691 | |
| 1692 | if (ensure_state(jni, RUNNING)) goto end; |
| 1693 | |
| 1694 | if (unwrap(jni, &trig, &trigger_type, wtrig)) goto end; |
| 1695 | if (check_buffer_bounds(jni, "send", buf, start, len)) goto end; |
| 1696 | |
| 1697 | p = (*jni)->GetByteArrayElements(jni, buf, 0); |
| 1698 | if (!p) goto end; |
| 1699 | |
| 1700 | maxfd = trig.rfd; |
| 1701 | if (maxfd < clientsk) maxfd = clientsk; |
| 1702 | while (len) { |
| 1703 | FD_ZERO(&rfds); FD_SET(trig.rfd, &rfds); |
| 1704 | FD_ZERO(&wfds); FD_SET(clientsk, &wfds); |
| 1705 | rc = select(maxfd + 1, &rfds, &wfds, 0, 0); if (rc < 0) goto err; |
| 1706 | if (FD_ISSET(trig.rfd, &rfds)) break; |
| 1707 | if (FD_ISSET(clientsk, &wfds)) { |
| 1708 | n = send(clientsk, p + start, len, 0); |
| 1709 | if (n >= 0) { start += n; len -= n; } |
| 1710 | else if (errno != EAGAIN && errno != EWOULDBLOCK) goto err; |
| 1711 | } |
| 1712 | } |
| 1713 | goto end; |
| 1714 | |
| 1715 | err: |
| 1716 | except_syserror(jni, SYSERR, errno, "failed to send on connection"); |
| 1717 | end: |
| 1718 | if (p) (*jni)->ReleaseByteArrayElements(jni, buf, p, JNI_ABORT); |
| 1719 | return; |
| 1720 | } |
| 1721 | |
| 1722 | JNIEXPORT jint JNICALL JNIFUNC(recv)(JNIEnv *jni, jobject cls, |
| 1723 | jbyteArray buf, |
| 1724 | jint start, jint len, |
| 1725 | wrapper wtrig) |
| 1726 | { |
| 1727 | struct trigger trig; |
| 1728 | int maxfd; |
| 1729 | fd_set rfds; |
| 1730 | jbyte *p = 0; |
| 1731 | jint rc = -1; |
| 1732 | |
| 1733 | lock_tripe(jni); |
| 1734 | if (clientsk == -1) { |
| 1735 | except(jni, STERR, "client connection not established"); |
| 1736 | unlock_tripe(jni); |
| 1737 | goto end; |
| 1738 | } |
| 1739 | unlock_tripe(jni); |
| 1740 | |
| 1741 | if (unwrap(jni, &trig, &trigger_type, wtrig)) goto end; |
| 1742 | if (check_buffer_bounds(jni, "send", buf, start, len)) goto end; |
| 1743 | |
| 1744 | p = (*jni)->GetByteArrayElements(jni, buf, 0); |
| 1745 | if (!p) goto end; |
| 1746 | |
| 1747 | maxfd = trig.rfd; |
| 1748 | if (maxfd < clientsk) maxfd = clientsk; |
| 1749 | for (;;) { |
| 1750 | FD_ZERO(&rfds); FD_SET(trig.rfd, &rfds); FD_SET(clientsk, &rfds); |
| 1751 | rc = select(maxfd + 1, &rfds, 0, 0, 0); if (rc < 0) goto err; |
| 1752 | if (FD_ISSET(trig.rfd, &rfds)) { |
| 1753 | break; |
| 1754 | } |
| 1755 | if (FD_ISSET(clientsk, &rfds)) { |
| 1756 | rc = recv(clientsk, p + start, len, 0); |
| 1757 | if (rc >= 0) break; |
| 1758 | else if (errno != EAGAIN && errno != EWOULDBLOCK) goto err; |
| 1759 | } |
| 1760 | } |
| 1761 | if (!rc) rc = -1; |
| 1762 | goto end; |
| 1763 | |
| 1764 | err: |
| 1765 | except_syserror(jni, SYSERR, errno, "failed to read from connection"); |
| 1766 | end: |
| 1767 | if (p) (*jni)->ReleaseByteArrayElements(jni, buf, p, 0); |
| 1768 | return (rc); |
| 1769 | } |
| 1770 | |
| 1771 | /*----- That's all, folks -------------------------------------------------*/ |