The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1995 Danny Gasparovski. |
| 3 | * |
| 4 | * Please read the file COPYRIGHT for the |
| 5 | * terms and conditions of the copyright. |
| 6 | */ |
| 7 | |
| 8 | #define WANT_SYS_IOCTL_H |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 9 | #include "qemu-common.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 10 | #include <slirp.h> |
| 11 | #include "ip_icmp.h" |
| 12 | #include "main.h" |
| 13 | #ifdef __sun__ |
| 14 | #include <sys/filio.h> |
| 15 | #endif |
| 16 | #define SLIRP_COMPILATION 1 |
David 'Digit' Turner | cc330d4 | 2013-12-14 23:26:42 +0100 | [diff] [blame] | 17 | #include "android/sockets.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 18 | #include "proxy_common.h" |
| 19 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 20 | static void sofcantrcvmore(struct socket *so); |
| 21 | static void sofcantsendmore(struct socket *so); |
| 22 | |
| 23 | #if 0 |
| 24 | static void |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 25 | so_init() |
| 26 | { |
| 27 | /* Nothing yet */ |
| 28 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 29 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 30 | |
| 31 | struct socket * |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 32 | solookup(struct socket *head, uint32_t laddr, u_int lport, |
| 33 | uint32_t faddr, u_int fport) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 34 | { |
| 35 | struct socket *so; |
| 36 | |
| 37 | for (so = head->so_next; so != head; so = so->so_next) { |
| 38 | if (so->so_laddr_port == lport && |
| 39 | so->so_laddr_ip == laddr && |
| 40 | so->so_faddr_ip == faddr && |
| 41 | so->so_faddr_port == fport) |
| 42 | break; |
| 43 | } |
| 44 | |
| 45 | if (so == head) |
| 46 | return (struct socket *)NULL; |
| 47 | return so; |
| 48 | |
| 49 | } |
| 50 | |
| 51 | /* |
| 52 | * Create a new socket, initialise the fields |
| 53 | * It is the responsibility of the caller to |
| 54 | * insque() it into the correct linked-list |
| 55 | */ |
| 56 | struct socket * |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 57 | socreate(void) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 58 | { |
| 59 | struct socket *so; |
| 60 | |
| 61 | so = (struct socket *)malloc(sizeof(struct socket)); |
| 62 | if(so) { |
| 63 | memset(so, 0, sizeof(struct socket)); |
| 64 | so->so_state = SS_NOFDREF; |
| 65 | so->s = -1; |
| 66 | } |
| 67 | return(so); |
| 68 | } |
| 69 | |
| 70 | /* |
| 71 | * remque and free a socket, clobber cache |
| 72 | */ |
| 73 | void |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 74 | sofree(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 75 | { |
| 76 | if (so->so_state & SS_PROXIFIED) |
| 77 | proxy_manager_del(so); |
| 78 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 79 | if (so->so_emu==EMU_RSH && so->extra) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 80 | sofree(so->extra); |
| 81 | so->extra=NULL; |
| 82 | } |
| 83 | if (so == tcp_last_so) |
| 84 | tcp_last_so = &tcb; |
| 85 | else if (so == udp_last_so) |
| 86 | udp_last_so = &udb; |
| 87 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 88 | m_free(so->so_m); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 89 | |
| 90 | if(so->so_next && so->so_prev) |
| 91 | remque(so); /* crashes if so is not in a queue */ |
| 92 | |
| 93 | free(so); |
| 94 | } |
| 95 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 96 | size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 97 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 98 | int n, lss, total; |
| 99 | struct sbuf *sb = &so->so_snd; |
| 100 | int len = sb->sb_datalen - sb->sb_cc; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 101 | int mss = so->so_tcpcb->t_maxseg; |
| 102 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 103 | DEBUG_CALL("sopreprbuf"); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 104 | DEBUG_ARG("so = %lx", (long )so); |
| 105 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 106 | len = sb->sb_datalen - sb->sb_cc; |
| 107 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 108 | if (len <= 0) |
| 109 | return 0; |
| 110 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 111 | iov[0].iov_base = sb->sb_wptr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 112 | iov[1].iov_base = NULL; |
| 113 | iov[1].iov_len = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 114 | if (sb->sb_wptr < sb->sb_rptr) { |
| 115 | iov[0].iov_len = sb->sb_rptr - sb->sb_wptr; |
| 116 | /* Should never succeed, but... */ |
| 117 | if (iov[0].iov_len > len) |
| 118 | iov[0].iov_len = len; |
| 119 | if (iov[0].iov_len > mss) |
| 120 | iov[0].iov_len -= iov[0].iov_len%mss; |
| 121 | n = 1; |
| 122 | } else { |
| 123 | iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr; |
| 124 | /* Should never succeed, but... */ |
| 125 | if (iov[0].iov_len > len) iov[0].iov_len = len; |
| 126 | len -= iov[0].iov_len; |
| 127 | if (len) { |
| 128 | iov[1].iov_base = sb->sb_data; |
| 129 | iov[1].iov_len = sb->sb_rptr - sb->sb_data; |
| 130 | if(iov[1].iov_len > len) |
| 131 | iov[1].iov_len = len; |
| 132 | total = iov[0].iov_len + iov[1].iov_len; |
| 133 | if (total > mss) { |
| 134 | lss = total%mss; |
| 135 | if (iov[1].iov_len > lss) { |
| 136 | iov[1].iov_len -= lss; |
| 137 | n = 2; |
| 138 | } else { |
| 139 | lss -= iov[1].iov_len; |
| 140 | iov[0].iov_len -= lss; |
| 141 | n = 1; |
| 142 | } |
| 143 | } else |
| 144 | n = 2; |
| 145 | } else { |
| 146 | if (iov[0].iov_len > mss) |
| 147 | iov[0].iov_len -= iov[0].iov_len%mss; |
| 148 | n = 1; |
| 149 | } |
| 150 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 151 | if (np) |
| 152 | *np = n; |
| 153 | |
| 154 | return iov[0].iov_len + (n - 1) * iov[1].iov_len; |
| 155 | } |
| 156 | |
| 157 | /* |
| 158 | * Read from so's socket into sb_snd, updating all relevant sbuf fields |
| 159 | * NOTE: This will only be called if it is select()ed for reading, so |
| 160 | * a read() of 0 (or less) means it's disconnected |
| 161 | */ |
| 162 | int |
| 163 | soread(struct socket *so) |
| 164 | { |
| 165 | int n, nn; |
| 166 | struct sbuf *sb = &so->so_snd; |
| 167 | struct iovec iov[2]; |
| 168 | |
| 169 | DEBUG_CALL("soread"); |
| 170 | DEBUG_ARG("so = %lx", (long )so); |
| 171 | |
| 172 | /* |
| 173 | * No need to check if there's enough room to read. |
| 174 | * soread wouldn't have been called if there weren't |
| 175 | */ |
| 176 | sopreprbuf(so, iov, &n); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 177 | |
| 178 | #ifdef HAVE_READV |
| 179 | nn = readv(so->s, (struct iovec *)iov, n); |
| 180 | DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn)); |
| 181 | #else |
| 182 | nn = socket_recv(so->s, iov[0].iov_base, iov[0].iov_len); |
| 183 | #endif |
| 184 | if (nn <= 0) { |
| 185 | if (nn < 0 && (errno == EINTR || errno == EAGAIN)) |
| 186 | return 0; |
| 187 | else { |
| 188 | DEBUG_MISC((dfd, " --- soread() disconnected, nn = %d, errno = %d-%s\n", nn, errno,errno_str)); |
| 189 | sofcantrcvmore(so); |
| 190 | tcp_sockclosed(sototcpcb(so)); |
| 191 | return -1; |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | #ifndef HAVE_READV |
| 196 | /* |
| 197 | * If there was no error, try and read the second time round |
| 198 | * We read again if n = 2 (ie, there's another part of the buffer) |
| 199 | * and we read as much as we could in the first read |
| 200 | * We don't test for <= 0 this time, because there legitimately |
| 201 | * might not be any more data (since the socket is non-blocking), |
| 202 | * a close will be detected on next iteration. |
| 203 | * A return of -1 wont (shouldn't) happen, since it didn't happen above |
| 204 | */ |
| 205 | if (n == 2 && nn == iov[0].iov_len) { |
| 206 | int ret; |
| 207 | ret = socket_recv(so->s, iov[1].iov_base, iov[1].iov_len); |
| 208 | if (ret > 0) |
| 209 | nn += ret; |
| 210 | } |
| 211 | |
| 212 | DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn)); |
| 213 | #endif |
| 214 | |
| 215 | /* Update fields */ |
| 216 | sb->sb_cc += nn; |
| 217 | sb->sb_wptr += nn; |
| 218 | if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen)) |
| 219 | sb->sb_wptr -= sb->sb_datalen; |
| 220 | return nn; |
| 221 | } |
| 222 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 223 | int soreadbuf(struct socket *so, const char *buf, int size) |
| 224 | { |
| 225 | int n, nn, copy = size; |
| 226 | struct sbuf *sb = &so->so_snd; |
| 227 | struct iovec iov[2]; |
| 228 | |
| 229 | DEBUG_CALL("soreadbuf"); |
| 230 | DEBUG_ARG("so = %lx", (long )so); |
| 231 | |
| 232 | /* |
| 233 | * No need to check if there's enough room to read. |
| 234 | * soread wouldn't have been called if there weren't |
| 235 | */ |
| 236 | if (sopreprbuf(so, iov, &n) < size) |
| 237 | goto err; |
| 238 | |
| 239 | nn = MIN(iov[0].iov_len, copy); |
| 240 | memcpy(iov[0].iov_base, buf, nn); |
| 241 | |
| 242 | copy -= nn; |
| 243 | buf += nn; |
| 244 | |
| 245 | if (copy == 0) |
| 246 | goto done; |
| 247 | |
| 248 | memcpy(iov[1].iov_base, buf, copy); |
| 249 | |
| 250 | done: |
| 251 | /* Update fields */ |
| 252 | sb->sb_cc += size; |
| 253 | sb->sb_wptr += size; |
| 254 | if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen)) |
| 255 | sb->sb_wptr -= sb->sb_datalen; |
| 256 | return size; |
| 257 | err: |
| 258 | |
| 259 | sofcantrcvmore(so); |
| 260 | tcp_sockclosed(sototcpcb(so)); |
| 261 | fprintf(stderr, "soreadbuf buffer to small"); |
| 262 | return -1; |
| 263 | } |
| 264 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 265 | /* |
| 266 | * Get urgent data |
| 267 | * |
| 268 | * When the socket is created, we set it SO_OOBINLINE, |
| 269 | * so when OOB data arrives, we soread() it and everything |
| 270 | * in the send buffer is sent as urgent data |
| 271 | */ |
| 272 | void |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 273 | sorecvoob(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 274 | { |
| 275 | struct tcpcb *tp = sototcpcb(so); |
| 276 | |
| 277 | DEBUG_CALL("sorecvoob"); |
| 278 | DEBUG_ARG("so = %lx", (long)so); |
| 279 | |
| 280 | /* |
| 281 | * We take a guess at how much urgent data has arrived. |
| 282 | * In most situations, when urgent data arrives, the next |
| 283 | * read() should get all the urgent data. This guess will |
| 284 | * be wrong however if more data arrives just after the |
| 285 | * urgent data, or the read() doesn't return all the |
| 286 | * urgent data. |
| 287 | */ |
| 288 | soread(so); |
| 289 | tp->snd_up = tp->snd_una + so->so_snd.sb_cc; |
| 290 | tp->t_force = 1; |
| 291 | tcp_output(tp); |
| 292 | tp->t_force = 0; |
| 293 | } |
| 294 | |
| 295 | /* |
| 296 | * Send urgent data |
| 297 | * There's a lot duplicated code here, but... |
| 298 | */ |
| 299 | int |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 300 | sosendoob(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 301 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 302 | struct sbuf *sb = &so->so_rcv; |
| 303 | char buff[2048]; /* XXX Shouldn't be sending more oob data than this */ |
| 304 | |
| 305 | int n, len; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 306 | |
| 307 | DEBUG_CALL("sosendoob"); |
| 308 | DEBUG_ARG("so = %lx", (long)so); |
| 309 | DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc); |
| 310 | |
| 311 | if (so->so_urgc > 2048) |
| 312 | so->so_urgc = 2048; /* XXXX */ |
| 313 | |
| 314 | if (sb->sb_rptr < sb->sb_wptr) { |
| 315 | /* We can send it directly */ |
| 316 | n = socket_send_oob(so->s, sb->sb_rptr, so->so_urgc); /* |MSG_DONTWAIT)); */ |
| 317 | so->so_urgc -= n; |
| 318 | |
| 319 | DEBUG_MISC((dfd, " --- sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc)); |
| 320 | } else { |
| 321 | /* |
| 322 | * Since there's no sendv or sendtov like writev, |
| 323 | * we must copy all data to a linear buffer then |
| 324 | * send it all |
| 325 | */ |
| 326 | len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; |
| 327 | if (len > so->so_urgc) len = so->so_urgc; |
| 328 | memcpy(buff, sb->sb_rptr, len); |
| 329 | so->so_urgc -= len; |
| 330 | if (so->so_urgc) { |
| 331 | n = sb->sb_wptr - sb->sb_data; |
| 332 | if (n > so->so_urgc) n = so->so_urgc; |
| 333 | memcpy((buff + len), sb->sb_data, n); |
| 334 | so->so_urgc -= n; |
| 335 | len += n; |
| 336 | } |
| 337 | n = socket_send_oob(so->s, buff, len); /* |MSG_DONTWAIT)); */ |
| 338 | #ifdef DEBUG |
| 339 | if (n != len) |
| 340 | DEBUG_ERROR((dfd, "Didn't send all data urgently XXXXX\n")); |
| 341 | #endif |
| 342 | DEBUG_MISC((dfd, " ---2 sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc)); |
| 343 | } |
| 344 | |
| 345 | sb->sb_cc -= n; |
| 346 | sb->sb_rptr += n; |
| 347 | if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen)) |
| 348 | sb->sb_rptr -= sb->sb_datalen; |
| 349 | |
| 350 | return n; |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Write data from so_rcv to so's socket, |
| 355 | * updating all sbuf field as necessary |
| 356 | */ |
| 357 | int |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 358 | sowrite(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 359 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 360 | int n,nn; |
| 361 | struct sbuf *sb = &so->so_rcv; |
| 362 | int len = sb->sb_cc; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 363 | struct iovec iov[2]; |
| 364 | |
| 365 | DEBUG_CALL("sowrite"); |
| 366 | DEBUG_ARG("so = %lx", (long)so); |
| 367 | |
| 368 | if (so->so_urgc) { |
| 369 | sosendoob(so); |
| 370 | if (sb->sb_cc == 0) |
| 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | /* |
| 375 | * No need to check if there's something to write, |
| 376 | * sowrite wouldn't have been called otherwise |
| 377 | */ |
| 378 | |
| 379 | len = sb->sb_cc; |
| 380 | |
| 381 | iov[0].iov_base = sb->sb_rptr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 382 | iov[1].iov_base = NULL; |
| 383 | iov[1].iov_len = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 384 | if (sb->sb_rptr < sb->sb_wptr) { |
| 385 | iov[0].iov_len = sb->sb_wptr - sb->sb_rptr; |
| 386 | /* Should never succeed, but... */ |
| 387 | if (iov[0].iov_len > len) iov[0].iov_len = len; |
| 388 | n = 1; |
| 389 | } else { |
| 390 | iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; |
| 391 | if (iov[0].iov_len > len) iov[0].iov_len = len; |
| 392 | len -= iov[0].iov_len; |
| 393 | if (len) { |
| 394 | iov[1].iov_base = sb->sb_data; |
| 395 | iov[1].iov_len = sb->sb_wptr - sb->sb_data; |
| 396 | if (iov[1].iov_len > len) iov[1].iov_len = len; |
| 397 | n = 2; |
| 398 | } else |
| 399 | n = 1; |
| 400 | } |
| 401 | /* Check if there's urgent data to send, and if so, send it */ |
| 402 | |
| 403 | #ifdef HAVE_READV |
| 404 | nn = writev(so->s, (const struct iovec *)iov, n); |
| 405 | |
| 406 | DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn)); |
| 407 | #else |
| 408 | nn = socket_send(so->s, iov[0].iov_base, iov[0].iov_len); |
| 409 | #endif |
| 410 | /* This should never happen, but people tell me it does *shrug* */ |
| 411 | if (nn < 0 && (errno == EAGAIN || errno == EINTR)) |
| 412 | return 0; |
| 413 | |
| 414 | if (nn <= 0) { |
| 415 | DEBUG_MISC((dfd, " --- sowrite disconnected, so->so_state = %x, errno = %d\n", |
| 416 | so->so_state, errno)); |
| 417 | sofcantsendmore(so); |
| 418 | tcp_sockclosed(sototcpcb(so)); |
| 419 | return -1; |
| 420 | } |
| 421 | |
| 422 | #ifndef HAVE_READV |
| 423 | if (n == 2 && nn == iov[0].iov_len) { |
| 424 | int ret; |
| 425 | ret = socket_send(so->s, iov[1].iov_base, iov[1].iov_len); |
| 426 | if (ret > 0) |
| 427 | nn += ret; |
| 428 | } |
| 429 | DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn)); |
| 430 | #endif |
| 431 | |
| 432 | /* Update sbuf */ |
| 433 | sb->sb_cc -= nn; |
| 434 | sb->sb_rptr += nn; |
| 435 | if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen)) |
| 436 | sb->sb_rptr -= sb->sb_datalen; |
| 437 | |
| 438 | /* |
| 439 | * If in DRAIN mode, and there's no more data, set |
| 440 | * it CANTSENDMORE |
| 441 | */ |
| 442 | if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0) |
| 443 | sofcantsendmore(so); |
| 444 | |
| 445 | return nn; |
| 446 | } |
| 447 | |
| 448 | /* |
| 449 | * recvfrom() a UDP socket |
| 450 | */ |
| 451 | void |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 452 | sorecvfrom(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 453 | { |
| 454 | SockAddress addr; |
| 455 | |
| 456 | DEBUG_CALL("sorecvfrom"); |
| 457 | DEBUG_ARG("so = %lx", (long)so); |
| 458 | |
| 459 | if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */ |
| 460 | char buff[256]; |
| 461 | int len; |
| 462 | |
| 463 | len = socket_recvfrom(so->s, buff, 256, &addr); |
| 464 | /* XXX Check if reply is "correct"? */ |
| 465 | |
| 466 | if(len == -1 || len == 0) { |
| 467 | u_char code=ICMP_UNREACH_PORT; |
| 468 | |
| 469 | if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST; |
| 470 | else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; |
| 471 | |
| 472 | DEBUG_MISC((dfd," udp icmp rx errno = %d-%s\n", |
| 473 | errno,errno_str)); |
| 474 | icmp_error(so->so_m, ICMP_UNREACH,code, 0,errno_str); |
| 475 | } else { |
| 476 | icmp_reflect(so->so_m); |
| 477 | so->so_m = 0; /* Don't mbuf_free() it again! */ |
| 478 | } |
| 479 | /* No need for this socket anymore, udp_detach it */ |
| 480 | udp_detach(so); |
| 481 | } else { /* A "normal" UDP packet */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 482 | struct mbuf *m; |
| 483 | int len; |
| 484 | int n; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 485 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 486 | if (!(m = m_get())) return; |
| 487 | m->m_data += IF_MAXLINKHDR; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 488 | |
| 489 | /* |
| 490 | * XXX Shouldn't FIONREAD packets destined for port 53, |
| 491 | * but I don't know the max packet size for DNS lookups |
| 492 | */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 493 | len = M_FREEROOM(m); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 494 | /* if (so->so_fport != htons(53)) { */ |
| 495 | n = socket_can_read(so->s); |
| 496 | |
| 497 | if (n > len) { |
| 498 | n = (m->m_data - m->m_dat) + m->m_len + n + 1; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 499 | m_inc(m, n); |
| 500 | len = M_FREEROOM(m); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 501 | } |
| 502 | /* } */ |
| 503 | |
| 504 | m->m_len = socket_recvfrom(so->s, m->m_data, len, &addr); |
| 505 | DEBUG_MISC((dfd, " did recvfrom %d, errno = %d-%s\n", |
| 506 | m->m_len, errno,errno_str)); |
| 507 | if(m->m_len<0) { |
| 508 | u_char code=ICMP_UNREACH_PORT; |
| 509 | |
| 510 | if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST; |
| 511 | else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; |
| 512 | |
| 513 | DEBUG_MISC((dfd," rx error, tx icmp ICMP_UNREACH:%i\n", code)); |
| 514 | icmp_error(so->so_m, ICMP_UNREACH,code, 0,errno_str); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 515 | m_free(m); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 516 | } else { |
| 517 | /* |
| 518 | * Hack: domain name lookup will be used the most for UDP, |
| 519 | * and since they'll only be used once there's no need |
| 520 | * for the 4 minute (or whatever) timeout... So we time them |
| 521 | * out much quicker (10 seconds for now...) |
| 522 | */ |
| 523 | if (so->so_expire) { |
| 524 | if (so->so_faddr_port == 53) |
| 525 | so->so_expire = curtime + SO_EXPIREFAST; |
| 526 | else |
| 527 | so->so_expire = curtime + SO_EXPIRE; |
| 528 | } |
| 529 | |
| 530 | /* if (m->m_len == len) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 531 | * m_inc(m, MINCSIZE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 532 | * m->m_len = 0; |
| 533 | * } |
| 534 | */ |
| 535 | |
| 536 | /* |
| 537 | * If this packet was destined for CTL_ADDR, |
| 538 | * make it look like that's where it came from, done by udp_output |
| 539 | */ |
| 540 | udp_output_(so, m, &addr); |
| 541 | } /* rx error */ |
| 542 | } /* if ping packet */ |
| 543 | } |
| 544 | |
| 545 | /* |
| 546 | * sendto() a socket |
| 547 | */ |
| 548 | int |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 549 | sosendto(struct socket *so, struct mbuf *m) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 550 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 551 | int ret; |
| 552 | SockAddress addr; |
| 553 | uint32_t addr_ip; |
| 554 | uint16_t addr_port; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 555 | |
| 556 | DEBUG_CALL("sosendto"); |
| 557 | DEBUG_ARG("so = %lx", (long)so); |
| 558 | DEBUG_ARG("m = %lx", (long)m); |
| 559 | |
| 560 | if ((so->so_faddr_ip & 0xffffff00) == special_addr_ip) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 561 | /* It's an alias */ |
| 562 | int low = so->so_faddr_ip & 0xff; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 563 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 564 | if ( CTL_IS_DNS(low) ) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 565 | addr_ip = dns_addr[low - CTL_DNS]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 566 | else |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 567 | addr_ip = loopback_addr_ip; |
| 568 | } else |
| 569 | addr_ip = so->so_faddr_ip; |
| 570 | |
| 571 | addr_port = so->so_faddr_port; |
| 572 | |
rich cannings | 7339b55 | 2011-02-16 13:43:44 -0800 | [diff] [blame] | 573 | /* |
| 574 | * test for generic forwarding; this function replaces the arguments |
| 575 | * only on success |
| 576 | */ |
| 577 | unsigned long faddr = addr_ip; |
| 578 | int fport = addr_port; |
| 579 | |
| 580 | if (slirp_should_net_forward(faddr, fport, &faddr, &fport)) { |
rich cannings | d952f28 | 2011-03-01 15:40:09 -0800 | [diff] [blame] | 581 | time_t timestamp = time(NULL); |
| 582 | slirp_drop_log( |
rich cannings | 7339b55 | 2011-02-16 13:43:44 -0800 | [diff] [blame] | 583 | "Redirected UDP: src: 0x%08lx:0x%04x org dst: 0x%08lx:0x%04x " |
rich cannings | d952f28 | 2011-03-01 15:40:09 -0800 | [diff] [blame] | 584 | "new dst: 0x%08lx:0x%04x %ld\n", |
rich cannings | 7339b55 | 2011-02-16 13:43:44 -0800 | [diff] [blame] | 585 | so->so_laddr_ip, so->so_laddr_port, |
| 586 | addr_ip, addr_port, |
rich cannings | d952f28 | 2011-03-01 15:40:09 -0800 | [diff] [blame] | 587 | faddr, fport, timestamp |
rich cannings | 7339b55 | 2011-02-16 13:43:44 -0800 | [diff] [blame] | 588 | ); |
| 589 | } |
| 590 | addr_ip = faddr; |
| 591 | addr_port = fport; |
| 592 | |
| 593 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 594 | sock_address_init_inet(&addr, addr_ip, addr_port); |
| 595 | |
| 596 | DEBUG_MISC((dfd, " sendto()ing, addr.sin_port=%d, addr.sin_addr.s_addr=%08x\n", addr_port, addr_ip)); |
| 597 | |
| 598 | /* Don't care what port we get */ |
| 599 | ret = socket_sendto(so->s, m->m_data, m->m_len,&addr); |
| 600 | if (ret < 0) |
| 601 | return -1; |
| 602 | |
| 603 | /* |
| 604 | * Kill the socket if there's no reply in 4 minutes, |
| 605 | * but only if it's an expirable socket |
| 606 | */ |
| 607 | if (so->so_expire) |
| 608 | so->so_expire = curtime + SO_EXPIRE; |
| 609 | so->so_state = SS_ISFCONNECTED; /* So that it gets select()ed */ |
| 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | /* |
| 614 | * XXX This should really be tcp_listen |
| 615 | */ |
| 616 | struct socket * |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 617 | solisten(u_int port, u_int32_t laddr, u_int lport, int flags) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 618 | { |
| 619 | SockAddress addr; |
| 620 | uint32_t addr_ip; |
| 621 | struct socket *so; |
| 622 | int s; |
| 623 | |
| 624 | DEBUG_CALL("solisten"); |
| 625 | DEBUG_ARG("port = %d", port); |
| 626 | DEBUG_ARG("laddr = %x", laddr); |
| 627 | DEBUG_ARG("lport = %d", lport); |
| 628 | DEBUG_ARG("flags = %x", flags); |
| 629 | |
| 630 | if ((so = socreate()) == NULL) { |
| 631 | /* free(so); Not sofree() ??? free(NULL) == NOP */ |
| 632 | return NULL; |
| 633 | } |
| 634 | |
| 635 | /* Don't tcp_attach... we don't need so_snd nor so_rcv */ |
| 636 | if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) { |
| 637 | free(so); |
| 638 | return NULL; |
| 639 | } |
| 640 | insque(so,&tcb); |
| 641 | |
| 642 | /* |
| 643 | * SS_FACCEPTONCE sockets must time out. |
| 644 | */ |
| 645 | if (flags & SS_FACCEPTONCE) |
| 646 | so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2; |
| 647 | |
| 648 | so->so_state = (SS_FACCEPTCONN|flags); |
| 649 | so->so_laddr_port = lport; /* Kept in host format */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 650 | so->so_laddr_ip = laddr; /* Ditto */ |
| 651 | so->so_haddr_port = port; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 652 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 653 | s = socket_loopback_server( port, SOCKET_STREAM ); |
| 654 | if (s < 0) |
| 655 | return NULL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 656 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 657 | socket_get_address(s, &addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 658 | |
| 659 | so->so_faddr_port = sock_address_get_port(&addr); |
| 660 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 661 | addr_ip = (uint32_t) sock_address_get_ip(&addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 662 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 663 | if (addr_ip == 0 || addr_ip == loopback_addr_ip) |
| 664 | so->so_faddr_ip = alias_addr_ip; |
| 665 | else |
| 666 | so->so_faddr_ip = addr_ip; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 667 | |
| 668 | so->s = s; |
| 669 | return so; |
| 670 | } |
| 671 | |
| 672 | |
| 673 | int |
| 674 | sounlisten(u_int port) |
| 675 | { |
| 676 | struct socket *so; |
| 677 | |
| 678 | for (so = tcb.so_next; so != &tcb; so = so->so_next) { |
| 679 | if (so->so_haddr_port == port) { |
| 680 | break; |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | if (so == &tcb) { |
| 685 | return -1; |
| 686 | } |
| 687 | |
| 688 | sofcantrcvmore( so ); |
| 689 | sofcantsendmore( so ); |
| 690 | close( so->s ); |
| 691 | so->s = -1; |
| 692 | sofree( so ); |
| 693 | return 0; |
| 694 | } |
| 695 | |
| 696 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 697 | #if 0 |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 698 | /* |
| 699 | * Data is available in so_rcv |
| 700 | * Just write() the data to the socket |
| 701 | * XXX not yet... |
| 702 | */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 703 | static void |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 704 | sorwakeup(so) |
| 705 | struct socket *so; |
| 706 | { |
| 707 | /* sowrite(so); */ |
| 708 | /* FD_CLR(so->s,&writefds); */ |
| 709 | } |
| 710 | |
| 711 | /* |
| 712 | * Data has been freed in so_snd |
| 713 | * We have room for a read() if we want to |
| 714 | * For now, don't read, it'll be done in the main loop |
| 715 | */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 716 | static void |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 717 | sowwakeup(so) |
| 718 | struct socket *so; |
| 719 | { |
| 720 | /* Nothing, yet */ |
| 721 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 722 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 723 | |
| 724 | /* |
| 725 | * Various session state calls |
| 726 | * XXX Should be #define's |
| 727 | * The socket state stuff needs work, these often get call 2 or 3 |
| 728 | * times each when only 1 was needed |
| 729 | */ |
| 730 | void |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 731 | soisfconnecting(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 732 | { |
| 733 | so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE| |
| 734 | SS_FCANTSENDMORE|SS_FWDRAIN); |
| 735 | so->so_state |= SS_ISFCONNECTING; /* Clobber other states */ |
| 736 | } |
| 737 | |
| 738 | void |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 739 | soisfconnected(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 740 | { |
| 741 | so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF); |
| 742 | so->so_state |= SS_ISFCONNECTED; /* Clobber other states */ |
| 743 | } |
| 744 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 745 | static void |
| 746 | sofcantrcvmore(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 747 | { |
| 748 | if ((so->so_state & SS_NOFDREF) == 0) { |
| 749 | shutdown(so->s,0); |
| 750 | if(global_writefds) { |
| 751 | FD_CLR(so->s,global_writefds); |
| 752 | } |
| 753 | } |
| 754 | so->so_state &= ~(SS_ISFCONNECTING); |
| 755 | if (so->so_state & SS_FCANTSENDMORE) |
| 756 | so->so_state = SS_NOFDREF; /* Don't select it */ /* XXX close() here as well? */ |
| 757 | else |
| 758 | so->so_state |= SS_FCANTRCVMORE; |
| 759 | } |
| 760 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 761 | static void |
| 762 | sofcantsendmore(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 763 | { |
| 764 | if ((so->so_state & SS_NOFDREF) == 0) { |
| 765 | shutdown(so->s,1); /* send FIN to fhost */ |
| 766 | if (global_readfds) { |
| 767 | FD_CLR(so->s,global_readfds); |
| 768 | } |
| 769 | if (global_xfds) { |
| 770 | FD_CLR(so->s,global_xfds); |
| 771 | } |
| 772 | } |
| 773 | so->so_state &= ~(SS_ISFCONNECTING); |
| 774 | if (so->so_state & SS_FCANTRCVMORE) |
| 775 | so->so_state = SS_NOFDREF; /* as above */ |
| 776 | else |
| 777 | so->so_state |= SS_FCANTSENDMORE; |
| 778 | } |
| 779 | |
| 780 | void |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 781 | soisfdisconnected(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 782 | { |
| 783 | /* so->so_state &= ~(SS_ISFCONNECTING|SS_ISFCONNECTED); */ |
| 784 | /* close(so->s); */ |
| 785 | /* so->so_state = SS_ISFDISCONNECTED; */ |
| 786 | /* |
| 787 | * XXX Do nothing ... ? |
| 788 | */ |
| 789 | } |
| 790 | |
| 791 | /* |
| 792 | * Set write drain mode |
| 793 | * Set CANTSENDMORE once all data has been write()n |
| 794 | */ |
| 795 | void |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 796 | sofwdrain(struct socket *so) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 797 | { |
| 798 | if (so->so_rcv.sb_cc) |
| 799 | so->so_state |= SS_FWDRAIN; |
| 800 | else |
| 801 | sofcantsendmore(so); |
| 802 | } |