| 1 | /* |
| 2 | * Copyright (c) 2003 Ben Harris |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person |
| 6 | * obtaining a copy of this software and associated documentation |
| 7 | * files (the "Software"), to deal in the Software without |
| 8 | * restriction, including without limitation the rights to use, |
| 9 | * copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following |
| 12 | * conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice shall be |
| 15 | * included in all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 20 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR |
| 21 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF |
| 22 | * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 23 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 24 | * SOFTWARE. |
| 25 | */ |
| 26 | /* |
| 27 | * mtcpnet.c - MacTCP interface |
| 28 | */ |
| 29 | |
| 30 | #if !TARGET_API_MAC_CARBON |
| 31 | |
| 32 | #include <MacTypes.h> |
| 33 | #include <Devices.h> |
| 34 | #include <Endian.h> |
| 35 | #include <Folders.h> |
| 36 | #include <MacTCP.h> |
| 37 | #include <MixedMode.h> |
| 38 | #include <Resources.h> |
| 39 | |
| 40 | #include <assert.h> |
| 41 | |
| 42 | #define DEFINE_PLUG_METHOD_MACROS |
| 43 | #include "putty.h" |
| 44 | #include "network.h" |
| 45 | #include "mac.h" |
| 46 | |
| 47 | /* |
| 48 | * The following structures are documented as being in |
| 49 | * <AddressXlation.h>, but that isn't shipped with Universal |
| 50 | * Interfaces, and it's easier to define them here than to require |
| 51 | * people to download yet another SDK. |
| 52 | */ |
| 53 | |
| 54 | static OSErr OpenResolver(char *); |
| 55 | static OSErr CloseResolver(void); |
| 56 | |
| 57 | enum { |
| 58 | OPENRESOLVER = 1, |
| 59 | CLOSERESOLVER, |
| 60 | STRTOADDR, |
| 61 | ADDRTOSTR, |
| 62 | ENUMCACHE, |
| 63 | ADDRTONAME, |
| 64 | HXINFO, |
| 65 | MXINFO |
| 66 | }; |
| 67 | |
| 68 | #define NUM_ALT_ADDRS 4 |
| 69 | |
| 70 | typedef struct hostInfo { |
| 71 | int rtnCode; |
| 72 | char cname[255]; |
| 73 | unsigned long addr[NUM_ALT_ADDRS]; |
| 74 | }; |
| 75 | |
| 76 | typedef CALLBACK_API(void, ResultProcPtr)(struct hostInfo *, char *); |
| 77 | typedef STACK_UPP_TYPE(ResultProcPtr) ResultUPP; |
| 78 | enum { uppResultProcInfo = kPascalStackBased |
| 79 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(struct hostInfo*))) |
| 80 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char *))) |
| 81 | }; |
| 82 | #define NewResultUPP(userRoutine) \ |
| 83 | (ResultUPP)NewRoutineDescriptor((ProcPtr)(userRoutine), \ |
| 84 | uppResultProcInfo, \ |
| 85 | GetCurrentArchitecture()) |
| 86 | #define DisposeResultUPP(userUPP) DisposeRoutineDescriptor(userUPP) |
| 87 | |
| 88 | static OSErr StrToAddr(char *, struct hostInfo *, ResultUPP *, char *); |
| 89 | |
| 90 | typedef CALLBACK_API_C(OSErr, OpenResolverProcPtr)(UInt32, char *); |
| 91 | typedef STACK_UPP_TYPE(OpenResolverProcPtr) OpenResolverUPP; |
| 92 | enum { uppOpenResolverProcInfo = kCStackBased |
| 93 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
| 94 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
| 95 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char*))) |
| 96 | }; |
| 97 | #define InvokeOpenResolverUPP(selector, fileName, userUPP) \ |
| 98 | CALL_TWO_PARAMETER_UPP((userUPP), uppOpenResolverProcInfo, \ |
| 99 | (selector), (fileName)) |
| 100 | |
| 101 | typedef CALLBACK_API_C(OSErr, CloseResolverProcPtr)(UInt32); |
| 102 | typedef STACK_UPP_TYPE(CloseResolverProcPtr) CloseResolverUPP; |
| 103 | enum { uppCloseResolverProcInfo = kCStackBased |
| 104 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
| 105 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
| 106 | }; |
| 107 | #define InvokeCloseResolverUPP(selector, userUPP) \ |
| 108 | CALL_ONE_PARAMETER_UPP((userUPP), uppCloseResolverProcInfo, (selector)) |
| 109 | |
| 110 | typedef CALLBACK_API_C(OSErr, StrToAddrProcPtr)(UInt32, char *, |
| 111 | struct hostInfo *, ResultUPP, |
| 112 | char *); |
| 113 | typedef STACK_UPP_TYPE(StrToAddrProcPtr) StrToAddrUPP; |
| 114 | enum { uppStrToAddrProcInfo = kCStackBased |
| 115 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
| 116 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
| 117 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char *))) |
| 118 | | STACK_ROUTINE_PARAMETER(3, SIZE_CODE(sizeof(struct hostInfo *))) |
| 119 | | STACK_ROUTINE_PARAMETER(4, SIZE_CODE(sizeof(ResultUPP))) |
| 120 | | STACK_ROUTINE_PARAMETER(5, SIZE_CODE(sizeof(char *))) |
| 121 | }; |
| 122 | #define InvokeStrToAddrUPP(selector, hostName, hostInfoPtr, ResultProc, \ |
| 123 | userDataPtr, userUPP) \ |
| 124 | CALL_FIVE_PARAMETER_UPP((userUPP), uppStrToAddrProcInfo, (selector),\ |
| 125 | (hostName), (hostInfoPtr), (ResultProc), \ |
| 126 | (userDataPtr)) |
| 127 | #define StrToAddr(hostName, hostInfoPtr, ResultProc, userDataPtr) \ |
| 128 | InvokeStrToAddrUPP(STRTOADDR, hostName, hostInfoPtr, ResultProc, \ |
| 129 | userDataPtr, (StrToAddrUPP)*mactcp.dnr_handle) |
| 130 | |
| 131 | typedef CALLBACK_API_C(OSErr, AddrToStrProcPtr)(UInt32, unsigned long, char *); |
| 132 | typedef STACK_UPP_TYPE(AddrToStrProcPtr) AddrToStrUPP; |
| 133 | enum { uppAddrToStrProcInfo = kCStackBased |
| 134 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
| 135 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
| 136 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(unsigned long))) |
| 137 | | STACK_ROUTINE_PARAMETER(3, SIZE_CODE(sizeof(char *))) |
| 138 | }; |
| 139 | #define InvokeAddrToStrUPP(selector, addr, addrStr, userUPP) \ |
| 140 | CALL_THREE_PARAMETER_UPP((userUPP), uppAddrToStrProcInfo, (selector),\ |
| 141 | (addr), (addrStr)) |
| 142 | #define AddrToStr(addr, addrStr) \ |
| 143 | InvokeAddrToStrUPP(ADDRTOSTR, addr, addrStr, \ |
| 144 | (AddrToStrUPP)*mactcp.dnr_handle) |
| 145 | |
| 146 | /* End of AddressXlation.h bits */ |
| 147 | |
| 148 | /* TCP connection states, mysteriously missing from <MacTCP.h> */ |
| 149 | #define TCPS_CLOSED 0 |
| 150 | #define TCPS_LISTEN 2 |
| 151 | #define TCPS_SYN_RECEIVED 4 |
| 152 | #define TCPS_SYN_SENT 6 |
| 153 | #define TCPS_ESTABLISHED 8 |
| 154 | #define TCPS_FIN_WAIT_1 10 |
| 155 | #define TCPS_FIN_WAIT_2 12 |
| 156 | #define TCPS_CLOSE_WAIT 14 |
| 157 | #define TCPS_CLOSING 16 |
| 158 | #define TCPS_LAST_ACK 18 |
| 159 | #define TCPS_TIME_WAIT 20 |
| 160 | |
| 161 | struct Socket_tag { |
| 162 | struct socket_function_table *fn; |
| 163 | /* the above variable absolutely *must* be the first in this structure */ |
| 164 | StreamPtr s; |
| 165 | OSErr err; |
| 166 | Plug plug; |
| 167 | void *private_ptr; |
| 168 | bufchain output_data; |
| 169 | int connected; |
| 170 | int writable; |
| 171 | int frozen; /* this causes readability notifications to be ignored */ |
| 172 | int frozen_readable; /* this means we missed at least one readability |
| 173 | * notification while we were frozen */ |
| 174 | int localhost_only; /* for listening sockets */ |
| 175 | char oobdata[1]; |
| 176 | int sending_oob; |
| 177 | int oobpending; /* is there OOB data available to read? */ |
| 178 | int oobinline; |
| 179 | int pending_error; /* in case send() returns error */ |
| 180 | int listener; |
| 181 | struct Socket_tag *next; |
| 182 | struct Socket_tag **prev; |
| 183 | }; |
| 184 | |
| 185 | /* |
| 186 | * We used to typedef struct Socket_tag *Socket. |
| 187 | * |
| 188 | * Since we have made the networking abstraction slightly more |
| 189 | * abstract, Socket no longer means a tcp socket (it could mean |
| 190 | * an ssl socket). So now we must use Actual_Socket when we know |
| 191 | * we are talking about a tcp socket. |
| 192 | */ |
| 193 | typedef struct Socket_tag *Actual_Socket; |
| 194 | |
| 195 | struct SockAddr_tag { |
| 196 | int resolved; |
| 197 | struct hostInfo hostinfo; |
| 198 | char hostname[512]; |
| 199 | }; |
| 200 | |
| 201 | /* Global variables */ |
| 202 | static struct { |
| 203 | Handle dnr_handle; |
| 204 | int initialised; |
| 205 | short refnum; |
| 206 | ProcessSerialNumber self; |
| 207 | Actual_Socket socklist; |
| 208 | } mactcp; |
| 209 | |
| 210 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie); |
| 211 | static pascal void mactcp_asr(StreamPtr, unsigned short, Ptr, unsigned short, |
| 212 | struct ICMPReport *); |
| 213 | static Plug mactcp_plug(Socket, Plug); |
| 214 | static void mactcp_flush(Socket); |
| 215 | static void mactcp_close(Socket); |
| 216 | static int mactcp_write(Socket, char const *, int); |
| 217 | static int mactcp_write_oob(Socket, char const*, int); |
| 218 | static void mactcp_set_private_ptr(Socket, void *); |
| 219 | static void *mactcp_get_private_ptr(Socket); |
| 220 | static const char *mactcp_socket_error(Socket); |
| 221 | static void mactcp_set_frozen(Socket, int); |
| 222 | |
| 223 | static void mactcp_recv(Actual_Socket s, size_t len); |
| 224 | |
| 225 | /* |
| 226 | * Initialise MacTCP. |
| 227 | * This should be called once before any TCP connection is opened. |
| 228 | */ |
| 229 | |
| 230 | OSErr mactcp_init(void) |
| 231 | { |
| 232 | OSErr err; |
| 233 | |
| 234 | /* |
| 235 | * IM:Devices describes a convoluted way of finding a spare unit |
| 236 | * number to open a driver on before calling OpenDriver. Happily, |
| 237 | * the MacTCP INIT ensures that .IPP is already open (and hence |
| 238 | * has a valid unit number already) so we don't need to go through |
| 239 | * all that. (MacTCP Programmer's Guide p6) |
| 240 | */ |
| 241 | err = OpenDriver("\p.IPP", &mactcp.refnum); |
| 242 | if (err != noErr) return err; |
| 243 | err = OpenResolver(NULL); |
| 244 | if (err != noErr) return err; |
| 245 | |
| 246 | mactcp.initialised = TRUE; |
| 247 | return noErr; |
| 248 | } |
| 249 | |
| 250 | void mactcp_cleanup(void) |
| 251 | { |
| 252 | Actual_Socket s, next; |
| 253 | |
| 254 | /* |
| 255 | * Eventually, PuTTY should close down each session as it exits, |
| 256 | * so there should be no sockets left when we get here. Still, |
| 257 | * better safe than sorry. |
| 258 | * |
| 259 | * XXX What about in-flight aync I/O (when we support that)? |
| 260 | */ |
| 261 | for (s = mactcp.socklist; s != NULL; s = next) { |
| 262 | next = s->next; /* s is about to vanish */ |
| 263 | mactcp_close(&s->fn); |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * When we get async DNS, we have to wait for any outstanding |
| 268 | * requests to complete here before exiting. |
| 269 | */ |
| 270 | CloseResolver(); |
| 271 | mactcp.initialised = FALSE; |
| 272 | } |
| 273 | |
| 274 | static ResultUPP mactcp_lookupdone_upp; |
| 275 | |
| 276 | SockAddr mactcp_namelookup(char const *host, char **canonicalname) |
| 277 | { |
| 278 | SockAddr ret = snew(struct SockAddr_tag); |
| 279 | OSErr err; |
| 280 | volatile int done = FALSE; |
| 281 | char *realhost; |
| 282 | int realhostlen; |
| 283 | |
| 284 | /* Clear the structure. */ |
| 285 | memset(ret, 0, sizeof(struct SockAddr_tag)); |
| 286 | if (mactcp_lookupdone_upp == NULL) |
| 287 | mactcp_lookupdone_upp = NewResultUPP(&mactcp_lookupdone); |
| 288 | /* Casting away const -- hope StrToAddr is sensible */ |
| 289 | err = StrToAddr((char *)host, &ret->hostinfo, mactcp_lookupdone_upp, |
| 290 | (char *)&done); |
| 291 | /* |
| 292 | * PuTTY expects DNS lookups to be synchronous (see bug |
| 293 | * "async-dns"), so we pretend they are. |
| 294 | */ |
| 295 | if (err == cacheFault) |
| 296 | while (!done) |
| 297 | continue; |
| 298 | ret->resolved = TRUE; |
| 299 | |
| 300 | if (ret->hostinfo.rtnCode == noErr) { |
| 301 | realhost = ret->hostinfo.cname; |
| 302 | /* MacTCP puts trailing dots on canonical names. */ |
| 303 | realhostlen = strlen(realhost); |
| 304 | if (realhost[realhostlen - 1] == '.') |
| 305 | realhost[realhostlen - 1] = '\0'; |
| 306 | } else |
| 307 | realhost = ""; |
| 308 | *canonicalname = snewn(1 + strlen(realhost), char); |
| 309 | strcpy(*canonicalname, realhost); |
| 310 | return ret; |
| 311 | } |
| 312 | |
| 313 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie) |
| 314 | { |
| 315 | volatile int *donep = (int *)cookie; |
| 316 | |
| 317 | *donep = TRUE; |
| 318 | } |
| 319 | |
| 320 | SockAddr mactcp_nonamelookup(char const *host) |
| 321 | { |
| 322 | SockAddr ret = snew(struct SockAddr_tag); |
| 323 | |
| 324 | ret->resolved = FALSE; |
| 325 | ret->hostinfo.rtnCode = noErr; |
| 326 | ret->hostname[0] = '\0'; |
| 327 | strncat(ret->hostname, host, lenof(ret->hostname) - 1); |
| 328 | return ret; |
| 329 | } |
| 330 | |
| 331 | void mactcp_getaddr(SockAddr addr, char *buf, int buflen) |
| 332 | { |
| 333 | char mybuf[16]; |
| 334 | OSErr err; |
| 335 | |
| 336 | if (addr->resolved) { |
| 337 | /* XXX only return first address */ |
| 338 | err = AddrToStr(addr->hostinfo.addr[0], mybuf); |
| 339 | buf[0] = '\0'; |
| 340 | if (err != noErr) |
| 341 | strncat(buf, mybuf, buflen - 1); |
| 342 | } else { |
| 343 | buf[0] = '\0'; |
| 344 | strncat(buf, addr->hostname, buflen - 1); |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | /* I think "local" here really means "loopback" */ |
| 349 | |
| 350 | int mactcp_hostname_is_local(char *name) |
| 351 | { |
| 352 | |
| 353 | return !strcmp(name, "localhost"); |
| 354 | } |
| 355 | |
| 356 | int mactcp_address_is_local(SockAddr addr) |
| 357 | { |
| 358 | int i; |
| 359 | |
| 360 | if (addr->resolved) |
| 361 | for (i = 0; i < NUM_ALT_ADDRS; i++) |
| 362 | if (addr->hostinfo.addr[i] & 0xff000000 == 0x7f000000) |
| 363 | return TRUE; |
| 364 | return FALSE; |
| 365 | } |
| 366 | |
| 367 | int mactcp_addrtype(SockAddr addr) |
| 368 | { |
| 369 | |
| 370 | if (addr->resolved) |
| 371 | return ADDRTYPE_IPV4; |
| 372 | return ADDRTYPE_NAME; |
| 373 | } |
| 374 | |
| 375 | void mactcp_addrcopy(SockAddr addr, char *buf) |
| 376 | { |
| 377 | |
| 378 | /* XXX only return first address */ |
| 379 | memcpy(buf, &addr->hostinfo.addr[0], 4); |
| 380 | } |
| 381 | |
| 382 | void mactcp_addr_free(SockAddr addr) |
| 383 | { |
| 384 | |
| 385 | sfree(addr); |
| 386 | } |
| 387 | |
| 388 | static Plug mactcp_plug(Socket sock, Plug p) |
| 389 | { |
| 390 | Actual_Socket s = (Actual_Socket) sock; |
| 391 | Plug ret = s->plug; |
| 392 | |
| 393 | if (p) |
| 394 | s->plug = p; |
| 395 | return ret; |
| 396 | } |
| 397 | |
| 398 | static void mactcp_flush(Socket s) |
| 399 | { |
| 400 | |
| 401 | fatalbox("mactcp_flush"); |
| 402 | } |
| 403 | |
| 404 | Socket mactcp_register(void *sock, Plug plug) |
| 405 | { |
| 406 | |
| 407 | fatalbox("mactcp_register"); |
| 408 | } |
| 409 | |
| 410 | static TCPNotifyUPP mactcp_asr_upp; |
| 411 | |
| 412 | Socket mactcp_new(SockAddr addr, int port, int privport, int oobinline, |
| 413 | int nodelay, int keepalive, Plug plug) |
| 414 | { |
| 415 | static struct socket_function_table fn_table = { |
| 416 | mactcp_plug, |
| 417 | mactcp_close, |
| 418 | mactcp_write, |
| 419 | mactcp_write_oob, |
| 420 | mactcp_flush, |
| 421 | mactcp_set_private_ptr, |
| 422 | mactcp_get_private_ptr, |
| 423 | mactcp_set_frozen, |
| 424 | mactcp_socket_error |
| 425 | }; |
| 426 | TCPiopb pb; |
| 427 | UDPiopb upb; |
| 428 | Actual_Socket ret; |
| 429 | ip_addr dstaddr; |
| 430 | size_t buflen; |
| 431 | |
| 432 | /* |
| 433 | * Create Socket structure. |
| 434 | */ |
| 435 | ret = snew(struct Socket_tag); |
| 436 | ret->s = 0; |
| 437 | ret->fn = &fn_table; |
| 438 | ret->err = noErr; |
| 439 | ret->plug = plug; |
| 440 | bufchain_init(&ret->output_data); |
| 441 | ret->connected = 0; /* to start with */ |
| 442 | ret->writable = 0; /* to start with */ |
| 443 | ret->sending_oob = 0; |
| 444 | ret->frozen = 0; |
| 445 | ret->frozen_readable = 0; |
| 446 | ret->localhost_only = 0; /* unused, but best init anyway */ |
| 447 | ret->pending_error = 0; |
| 448 | ret->oobinline = oobinline; |
| 449 | ret->oobpending = FALSE; |
| 450 | ret->listener = 0; |
| 451 | |
| 452 | dstaddr = addr->hostinfo.addr[0]; /* XXX should try all of them */ |
| 453 | /* |
| 454 | * Create a TCP stream. |
| 455 | * |
| 456 | * MacTCP requires us to provide it with some buffer memory. Page |
| 457 | * 31 of the Programmer's Guide says it should be a minimum of |
| 458 | * 4*MTU+1024. Page 36 says a minimum of 4096 bytes. Assume |
| 459 | * they're both correct. |
| 460 | */ |
| 461 | assert(addr->resolved); |
| 462 | upb.ioCRefNum = mactcp.refnum; |
| 463 | upb.csCode = UDPMaxMTUSize; |
| 464 | upb.csParam.mtu.remoteHost = dstaddr; |
| 465 | upb.csParam.mtu.userDataPtr = NULL; |
| 466 | ret->err = PBControlSync((ParmBlkPtr)&upb); |
| 467 | if (ret->err != noErr) return (Socket)ret; |
| 468 | |
| 469 | buflen = upb.csParam.mtu.mtuSize * 4 + 1024; |
| 470 | if (buflen < 4096) buflen = 4096; |
| 471 | if (mactcp_asr_upp == NULL) |
| 472 | mactcp_asr_upp = NewTCPNotifyUPP(&mactcp_asr); |
| 473 | GetCurrentProcess(&mactcp.self); |
| 474 | pb.ioCRefNum = mactcp.refnum; |
| 475 | pb.csCode = TCPCreate; |
| 476 | pb.csParam.create.rcvBuff = snewn(buflen, char); |
| 477 | pb.csParam.create.rcvBuffLen = buflen; |
| 478 | pb.csParam.create.notifyProc = mactcp_asr_upp; |
| 479 | pb.csParam.create.userDataPtr = (Ptr)ret; |
| 480 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
| 481 | if (ret->err != noErr) return (Socket)ret; |
| 482 | ret->s = pb.tcpStream; |
| 483 | |
| 484 | /* |
| 485 | * Open the connection. |
| 486 | */ |
| 487 | pb.ioCRefNum = mactcp.refnum; |
| 488 | pb.csCode = TCPActiveOpen; |
| 489 | pb.tcpStream = ret->s; |
| 490 | pb.csParam.open.validityFlags = 0; |
| 491 | pb.csParam.open.remoteHost = dstaddr; |
| 492 | pb.csParam.open.remotePort = port; |
| 493 | pb.csParam.open.localPort = privport ? 1023 : 0; |
| 494 | pb.csParam.open.dontFrag = FALSE; |
| 495 | pb.csParam.open.timeToLive = 0; |
| 496 | pb.csParam.open.security = 0; |
| 497 | pb.csParam.open.optionCnt = 0; |
| 498 | pb.csParam.open.userDataPtr = (Ptr)ret; |
| 499 | while (1) { |
| 500 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
| 501 | if (!privport || ret->err != duplicateSocket) |
| 502 | break; |
| 503 | pb.csParam.open.localPort--; |
| 504 | if (pb.csParam.open.localPort == 0) |
| 505 | break; |
| 506 | } |
| 507 | |
| 508 | if (ret->err != noErr) return (Socket)ret; |
| 509 | |
| 510 | ret->connected = TRUE; |
| 511 | ret->writable = TRUE; |
| 512 | |
| 513 | /* Add this to the list of all sockets */ |
| 514 | ret->next = mactcp.socklist; |
| 515 | ret->prev = &mactcp.socklist; |
| 516 | if (ret->next != NULL) |
| 517 | ret->next->prev = &ret->next; |
| 518 | mactcp.socklist = ret; |
| 519 | |
| 520 | sk_addr_free(addr); /* don't need this anymore */ |
| 521 | |
| 522 | return (Socket)ret; |
| 523 | } |
| 524 | |
| 525 | Socket mactcp_newlistener(char *srcaddr, int port, Plug plug, |
| 526 | int local_host_only, int address_family) |
| 527 | { |
| 528 | |
| 529 | fatalbox("mactcp_newlistener"); |
| 530 | } |
| 531 | |
| 532 | static void mactcp_close(Socket sock) |
| 533 | { |
| 534 | Actual_Socket s = (Actual_Socket)sock; |
| 535 | TCPiopb pb; |
| 536 | |
| 537 | /* |
| 538 | * TCPClose is equivalent to shutdown(fd, SHUT_WR), and hence |
| 539 | * leaves the Rx side open, while TCPAbort seems rather vicious, |
| 540 | * throwing away Tx data that haven't been ACKed yet. We do both |
| 541 | * in succession. |
| 542 | */ |
| 543 | pb.ioCRefNum = mactcp.refnum; |
| 544 | pb.csCode = TCPClose; |
| 545 | pb.tcpStream = s->s; |
| 546 | pb.csParam.close.validityFlags = 0; |
| 547 | pb.csParam.close.userDataPtr = (Ptr)s; |
| 548 | s->err = PBControlSync((ParmBlkPtr)&pb); |
| 549 | /* Not much we can do about an error anyway. */ |
| 550 | |
| 551 | pb.ioCRefNum = mactcp.refnum; |
| 552 | pb.csCode = TCPAbort; |
| 553 | pb.tcpStream = s->s; |
| 554 | pb.csParam.abort.userDataPtr = (Ptr)s; |
| 555 | s->err = PBControlSync((ParmBlkPtr)&pb); |
| 556 | /* Even less we can do about an error here. */ |
| 557 | |
| 558 | pb.ioCRefNum = mactcp.refnum; |
| 559 | pb.csCode = TCPRelease; |
| 560 | pb.tcpStream = s->s; |
| 561 | pb.csParam.create.userDataPtr = (Ptr)s; |
| 562 | s->err = PBControlSync((ParmBlkPtr)&pb); |
| 563 | if (s->err == noErr) |
| 564 | sfree(pb.csParam.create.rcvBuff); |
| 565 | |
| 566 | /* Unhitch from list of sockets */ |
| 567 | *s->prev = s->next; |
| 568 | if (s->next != NULL) |
| 569 | s->next->prev = s->prev; |
| 570 | |
| 571 | sfree(s); |
| 572 | } |
| 573 | |
| 574 | static int mactcp_write(Socket sock, char const *buf, int len) |
| 575 | { |
| 576 | Actual_Socket s = (Actual_Socket) sock; |
| 577 | wdsEntry wds[2]; |
| 578 | TCPiopb pb; |
| 579 | |
| 580 | /* |
| 581 | * Casting away const from buf should be safe -- MacTCP won't |
| 582 | * write to it. |
| 583 | */ |
| 584 | wds[0].length = len; |
| 585 | wds[0].ptr = (char *)buf; |
| 586 | wds[1].length = 0; |
| 587 | |
| 588 | pb.ioCRefNum = mactcp.refnum; |
| 589 | pb.csCode = TCPSend; |
| 590 | pb.tcpStream = s->s; |
| 591 | pb.csParam.send.validityFlags = 0; |
| 592 | pb.csParam.send.pushFlag = TRUE; /* XXX we want it to return. */ |
| 593 | pb.csParam.send.urgentFlag = 0; |
| 594 | pb.csParam.send.wdsPtr = (Ptr)wds; |
| 595 | pb.csParam.send.userDataPtr = (Ptr)s; |
| 596 | s->err = PBControlSync((ParmBlkPtr)&pb); |
| 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | static int mactcp_write_oob(Socket sock, char const *buf, int len) |
| 601 | { |
| 602 | |
| 603 | fatalbox("mactcp_write_oob"); |
| 604 | } |
| 605 | |
| 606 | static pascal void mactcp_asr(StreamPtr str, unsigned short event, Ptr cookie, |
| 607 | unsigned short termin_reason, |
| 608 | struct ICMPReport *icmp) |
| 609 | { |
| 610 | |
| 611 | WakeUpProcess(&mactcp.self); |
| 612 | } |
| 613 | |
| 614 | /* |
| 615 | * Called from our event loop if there's work to do. |
| 616 | */ |
| 617 | void mactcp_poll(void) |
| 618 | { |
| 619 | Actual_Socket s, next; |
| 620 | TCPiopb pb; |
| 621 | |
| 622 | for (s = mactcp.socklist; s != NULL; s = next) { |
| 623 | next = s->next; |
| 624 | do { |
| 625 | pb.ioCRefNum = mactcp.refnum; |
| 626 | pb.csCode = TCPStatus; |
| 627 | pb.tcpStream = s->s; |
| 628 | pb.csParam.status.userDataPtr = (Ptr)s; |
| 629 | s->err = PBControlSync((ParmBlkPtr)&pb); |
| 630 | if (s->err != noErr) |
| 631 | goto next_socket; |
| 632 | if (pb.csParam.status.amtUnreadData == 0) |
| 633 | break; |
| 634 | mactcp_recv(s, pb.csParam.status.amtUnreadData); |
| 635 | } while (TRUE); |
| 636 | switch (pb.csParam.status.connectionState) { |
| 637 | case TCPS_CLOSE_WAIT: |
| 638 | /* Remote end has sent us a FIN */ |
| 639 | plug_closing(s->plug, NULL, 0, 0); |
| 640 | } |
| 641 | next_socket: |
| 642 | ; |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | static void mactcp_recv(Actual_Socket s, size_t len) |
| 647 | { |
| 648 | rdsEntry rds[2]; |
| 649 | TCPiopb pb; |
| 650 | |
| 651 | if (s->frozen) return; |
| 652 | |
| 653 | while (len > 0) { |
| 654 | pb.ioCRefNum = mactcp.refnum; |
| 655 | pb.csCode = TCPNoCopyRcv; |
| 656 | pb.tcpStream = s->s; |
| 657 | pb.csParam.receive.commandTimeoutValue = 0; |
| 658 | pb.csParam.receive.rdsPtr = (Ptr)rds; |
| 659 | pb.csParam.receive.rdsLength = lenof(rds) - 1; |
| 660 | pb.csParam.receive.userDataPtr = (Ptr)s; |
| 661 | s->err = PBControlSync((ParmBlkPtr)&pb); |
| 662 | if (s->err != noErr) |
| 663 | return; |
| 664 | plug_receive(s->plug, 0, rds[0].ptr, rds[0].length); |
| 665 | len -= rds[0].length; |
| 666 | pb.csCode = TCPRcvBfrReturn; |
| 667 | s->err = PBControlSync((ParmBlkPtr)&pb); |
| 668 | if (s->err != noErr) |
| 669 | return; |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | /* |
| 674 | * Each socket abstraction contains a `void *' private field in |
| 675 | * which the client can keep state. |
| 676 | */ |
| 677 | static void mactcp_set_private_ptr(Socket sock, void *ptr) |
| 678 | { |
| 679 | Actual_Socket s = (Actual_Socket) sock; |
| 680 | s->private_ptr = ptr; |
| 681 | } |
| 682 | |
| 683 | static void *mactcp_get_private_ptr(Socket sock) |
| 684 | { |
| 685 | Actual_Socket s = (Actual_Socket) sock; |
| 686 | return s->private_ptr; |
| 687 | } |
| 688 | |
| 689 | /* |
| 690 | * Special error values are returned from mactcp_namelookup and |
| 691 | * mactcp_new if there's a problem. These functions extract an error |
| 692 | * message, or return NULL if there's no problem. |
| 693 | */ |
| 694 | char *mactcp_addr_error(SockAddr addr) |
| 695 | { |
| 696 | static char buf[64]; |
| 697 | |
| 698 | switch (addr->hostinfo.rtnCode) { |
| 699 | case noErr: |
| 700 | return NULL; |
| 701 | case nameSyntaxErr: |
| 702 | return "Name syntax error"; |
| 703 | case noNameServer: |
| 704 | return "No name server found"; |
| 705 | case authNameErr: |
| 706 | return "Domain name does not exist"; |
| 707 | case noAnsErr: |
| 708 | return "No answer from domain name server"; |
| 709 | case dnrErr: |
| 710 | return "Domain name server returned an error"; |
| 711 | case outOfMemory: |
| 712 | return "Out of memory"; |
| 713 | default: |
| 714 | sprintf(buf, "Unknown DNR error %d", addr->hostinfo.rtnCode); |
| 715 | return buf; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | static const char *mactcp_socket_error(Socket sock) |
| 720 | { |
| 721 | static char buf[64]; |
| 722 | Actual_Socket s = (Actual_Socket) sock; |
| 723 | |
| 724 | switch (s->err) { |
| 725 | case noErr: |
| 726 | return NULL; |
| 727 | case insufficientResources: |
| 728 | return "Insufficient resources to open TCP stream"; |
| 729 | case duplicateSocket: |
| 730 | return "Duplicate socket"; |
| 731 | case openFailed: |
| 732 | return "Connection failed while opening"; |
| 733 | default: |
| 734 | sprintf(buf, "Unknown MacTCP error %d", s->err); |
| 735 | return buf; |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | static void mactcp_set_frozen(Socket sock, int is_frozen) |
| 740 | { |
| 741 | Actual_Socket s = (Actual_Socket) sock; |
| 742 | |
| 743 | if (s->frozen == is_frozen) |
| 744 | return; |
| 745 | s->frozen = is_frozen; |
| 746 | } |
| 747 | |
| 748 | /* |
| 749 | * Bits below here would usually be in dnr.c, shipped with the MacTCP |
| 750 | * SDK, but its convenient not to require that, and since we assume |
| 751 | * System 7 we can actually simplify things a lot. |
| 752 | */ |
| 753 | |
| 754 | static OSErr OpenResolver(char *hosts_file) |
| 755 | { |
| 756 | short vrefnum; |
| 757 | long dirid; |
| 758 | HParamBlockRec pb; |
| 759 | Str255 filename; |
| 760 | OSErr err; |
| 761 | int fd; |
| 762 | Handle dnr_handle; |
| 763 | |
| 764 | if (mactcp.dnr_handle != NULL) |
| 765 | return noErr; |
| 766 | |
| 767 | err = FindFolder(kOnSystemDisk, kControlPanelFolderType, FALSE, &vrefnum, |
| 768 | &dirid); |
| 769 | if (err != noErr) return err; |
| 770 | |
| 771 | /* |
| 772 | * Might be better to use PBCatSearch here, but it's not always |
| 773 | * available. |
| 774 | */ |
| 775 | pb.fileParam.ioCompletion = NULL; |
| 776 | pb.fileParam.ioNamePtr = filename; |
| 777 | pb.fileParam.ioVRefNum = vrefnum; |
| 778 | pb.fileParam.ioFDirIndex = 1; |
| 779 | pb.fileParam.ioDirID = dirid; |
| 780 | fd = -1; |
| 781 | |
| 782 | while (PBHGetFInfoSync(&pb) == noErr) { |
| 783 | if (pb.fileParam.ioFlFndrInfo.fdType == 'cdev' && |
| 784 | pb.fileParam.ioFlFndrInfo.fdCreator == 'ztcp') { |
| 785 | fd = HOpenResFile(vrefnum, dirid, filename, fsRdPerm); |
| 786 | if (fd == -1) continue; |
| 787 | dnr_handle = Get1IndResource('dnrp', 1); |
| 788 | if (dnr_handle != NULL) |
| 789 | break; |
| 790 | CloseResFile(fd); |
| 791 | fd = -1; |
| 792 | } |
| 793 | pb.fileParam.ioDirID = dirid; |
| 794 | pb.fileParam.ioFDirIndex++; |
| 795 | } |
| 796 | if (fd == -1) |
| 797 | return fnfErr; |
| 798 | |
| 799 | DetachResource(dnr_handle); |
| 800 | CloseResFile(fd); |
| 801 | |
| 802 | MoveHHi(dnr_handle); |
| 803 | HLock(dnr_handle); |
| 804 | |
| 805 | err = InvokeOpenResolverUPP(OPENRESOLVER, hosts_file, |
| 806 | (OpenResolverUPP)*dnr_handle); |
| 807 | if (err != noErr) { |
| 808 | HUnlock(dnr_handle); |
| 809 | DisposeHandle(dnr_handle); |
| 810 | return err; |
| 811 | } |
| 812 | |
| 813 | mactcp.dnr_handle = dnr_handle; |
| 814 | return noErr; |
| 815 | } |
| 816 | |
| 817 | OSErr CloseResolver(void) |
| 818 | { |
| 819 | Handle dnr_handle = mactcp.dnr_handle; |
| 820 | OSErr err; |
| 821 | |
| 822 | if (mactcp.dnr_handle == NULL) |
| 823 | return notOpenErr; |
| 824 | |
| 825 | err = InvokeCloseResolverUPP(CLOSERESOLVER, |
| 826 | (CloseResolverUPP)*mactcp.dnr_handle); |
| 827 | if (err != noErr) |
| 828 | return err; |
| 829 | |
| 830 | mactcp.dnr_handle = NULL; |
| 831 | HUnlock(dnr_handle); |
| 832 | DisposeHandle(dnr_handle); |
| 833 | return noErr; |
| 834 | } |
| 835 | |
| 836 | #endif |
| 837 | |
| 838 | /* |
| 839 | * Local Variables: |
| 840 | * c-file-style: "simon" |
| 841 | * End: |
| 842 | */ |