193194e2 |
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 | #include <MacTypes.h> |
31 | #include <Devices.h> |
32 | #include <Endian.h> |
33 | #include <Folders.h> |
34 | #include <MacTCP.h> |
35 | #include <MixedMode.h> |
36 | #include <Resources.h> |
37 | |
38 | #include <assert.h> |
39 | |
d25f9823 |
40 | #define DEFINE_PLUG_METHOD_MACROS |
193194e2 |
41 | #include "putty.h" |
42 | #include "network.h" |
43 | #include "mac.h" |
44 | |
45 | /* |
46 | * The following structures are documented as being in |
47 | * <AddressXlation.h>, but that isn't shipped with Universal |
48 | * Interfaces, and it's easier to define them here than to require |
49 | * people to download yet another SDK. |
50 | */ |
51 | |
52 | static OSErr OpenResolver(char *); |
53 | static OSErr CloseResolver(void); |
54 | |
55 | enum { |
56 | OPENRESOLVER = 1, |
57 | CLOSERESOLVER, |
58 | STRTOADDR, |
59 | ADDRTOSTR, |
60 | ENUMCACHE, |
61 | ADDRTONAME, |
62 | HXINFO, |
63 | MXINFO |
64 | }; |
65 | |
66 | #define NUM_ALT_ADDRS 4 |
67 | |
68 | typedef struct hostInfo { |
69 | int rtnCode; |
70 | char cname[255]; |
71 | unsigned long addr[NUM_ALT_ADDRS]; |
72 | }; |
73 | |
74 | typedef CALLBACK_API(void, ResultProcPtr)(struct hostInfo *, char *); |
75 | typedef STACK_UPP_TYPE(ResultProcPtr) ResultUPP; |
76 | enum { uppResultProcInfo = kPascalStackBased |
77 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(struct hostInfo*))) |
78 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char *))) |
79 | }; |
80 | #define NewResultUPP(userRoutine) \ |
81 | (ResultUPP)NewRoutineDescriptor((ProcPtr)(userRoutine), \ |
82 | uppResultProcInfo, \ |
83 | GetCurrentArchitecture()) |
84 | #define DisposeResultUPP(userUPP) DisposeRoutineDescriptor(userUPP) |
85 | |
86 | static OSErr StrToAddr(char *, struct hostInfo *, ResultUPP *, char *); |
87 | |
88 | typedef CALLBACK_API_C(OSErr, OpenResolverProcPtr)(UInt32, char *); |
89 | typedef STACK_UPP_TYPE(OpenResolverProcPtr) OpenResolverUPP; |
90 | enum { uppOpenResolverProcInfo = kCStackBased |
91 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
92 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
93 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char*))) |
94 | }; |
95 | #define InvokeOpenResolverUPP(selector, fileName, userUPP) \ |
96 | CALL_TWO_PARAMETER_UPP((userUPP), uppOpenResolverProcInfo, \ |
97 | (selector), (fileName)) |
98 | |
99 | typedef CALLBACK_API_C(OSErr, CloseResolverProcPtr)(UInt32); |
100 | typedef STACK_UPP_TYPE(CloseResolverProcPtr) CloseResolverUPP; |
101 | enum { uppCloseResolverProcInfo = kCStackBased |
102 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
103 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
104 | }; |
105 | #define InvokeCloseResolverUPP(selector, userUPP) \ |
106 | CALL_ONE_PARAMETER_UPP((userUPP), uppCloseResolverProcInfo, (selector)) |
107 | |
108 | typedef CALLBACK_API_C(OSErr, StrToAddrProcPtr)(UInt32, char *, |
109 | struct hostInfo *, ResultUPP, |
110 | char *); |
111 | typedef STACK_UPP_TYPE(StrToAddrProcPtr) StrToAddrUPP; |
112 | enum { uppStrToAddrProcInfo = kCStackBased |
113 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
114 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
115 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char *))) |
116 | | STACK_ROUTINE_PARAMETER(3, SIZE_CODE(sizeof(struct hostInfo *))) |
117 | | STACK_ROUTINE_PARAMETER(4, SIZE_CODE(sizeof(ResultUPP))) |
118 | | STACK_ROUTINE_PARAMETER(5, SIZE_CODE(sizeof(char *))) |
119 | }; |
120 | #define InvokeStrToAddrUPP(selector, hostName, hostInfoPtr, ResultProc, \ |
121 | userDataPtr, userUPP) \ |
122 | CALL_FIVE_PARAMETER_UPP((userUPP), uppStrToAddrProcInfo, (selector),\ |
123 | (hostName), (hostInfoPtr), (ResultProc), \ |
124 | (userDataPtr)) |
125 | #define StrToAddr(hostName, hostInfoPtr, ResultProc, userDataPtr) \ |
126 | InvokeStrToAddrUPP(STRTOADDR, hostName, hostInfoPtr, ResultProc, \ |
127 | userDataPtr, (StrToAddrUPP)*mactcp.dnr_handle) |
128 | |
129 | typedef CALLBACK_API_C(OSErr, AddrToStrProcPtr)(UInt32, unsigned long, char *); |
130 | typedef STACK_UPP_TYPE(AddrToStrProcPtr) AddrToStrUPP; |
131 | enum { uppAddrToStrProcInfo = kCStackBased |
132 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
133 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(unsigned long))) |
134 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char *))) |
135 | }; |
136 | #define InvokeAddrToStrUPP(selector, addr, addrStr, userUPP) \ |
137 | CALL_THREE_PARAMETER_UPP((userUPP), uppAddrToStrProcInfo, (selector),\ |
138 | (addr), (addrStr)) |
139 | #define AddrToStr(addr, addrStr) \ |
140 | InvokeAddrToStrUPP(ADDRTOSTR, addr, addrStr, \ |
141 | (AddrToStrUPP)*mactcp.dnr_handle) |
142 | |
143 | /* End of AddressXlation.h bits */ |
144 | |
145 | struct Socket_tag { |
146 | struct socket_function_table *fn; |
147 | /* the above variable absolutely *must* be the first in this structure */ |
2beb0fb0 |
148 | StreamPtr s; |
149 | OSErr err; |
150 | Plug plug; |
151 | void *private_ptr; |
152 | bufchain output_data; |
153 | int connected; |
154 | int writable; |
155 | int frozen; /* this causes readability notifications to be ignored */ |
156 | int frozen_readable; /* this means we missed at least one readability |
157 | * notification while we were frozen */ |
158 | int localhost_only; /* for listening sockets */ |
159 | char oobdata[1]; |
160 | int sending_oob; |
161 | int oobpending; /* is there OOB data available to read? */ |
162 | int oobinline; |
163 | int pending_error; /* in case send() returns error */ |
164 | int listener; |
d25f9823 |
165 | struct Socket_tag *next; |
166 | struct Socket_tag **prev; |
193194e2 |
167 | }; |
168 | |
169 | /* |
170 | * We used to typedef struct Socket_tag *Socket. |
171 | * |
172 | * Since we have made the networking abstraction slightly more |
173 | * abstract, Socket no longer means a tcp socket (it could mean |
174 | * an ssl socket). So now we must use Actual_Socket when we know |
175 | * we are talking about a tcp socket. |
176 | */ |
177 | typedef struct Socket_tag *Actual_Socket; |
178 | |
179 | struct SockAddr_tag { |
180 | int resolved; |
181 | struct hostInfo hostinfo; |
182 | char hostname[512]; |
183 | }; |
184 | |
185 | /* Global variables */ |
186 | static struct { |
187 | Handle dnr_handle; |
188 | int initialised; |
189 | short refnum; |
d25f9823 |
190 | Actual_Socket socklist; |
193194e2 |
191 | } mactcp; |
192 | |
193 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie); |
2beb0fb0 |
194 | static Plug mactcp_plug(Socket, Plug); |
195 | static void mactcp_flush(Socket); |
196 | static void mactcp_close(Socket); |
197 | static int mactcp_write(Socket, char *, int); |
198 | static int mactcp_write_oob(Socket, char *, int); |
199 | static void mactcp_set_private_ptr(Socket, void *); |
200 | static void *mactcp_get_private_ptr(Socket); |
201 | static char *mactcp_socket_error(Socket); |
202 | static void mactcp_set_frozen(Socket, int); |
193194e2 |
203 | |
d25f9823 |
204 | static void mactcp_recv(Actual_Socket s, size_t len); |
205 | |
193194e2 |
206 | /* |
207 | * Initialise MacTCP. |
208 | * This should be called once before any TCP connection is opened. |
209 | */ |
210 | |
211 | OSErr mactcp_init(void) |
212 | { |
213 | OSErr err; |
214 | |
215 | /* |
216 | * IM:Devices describes a convoluted way of finding a spare unit |
217 | * number to open a driver on before calling OpenDriver. Happily, |
2beb0fb0 |
218 | * the MacTCP INIT ensures that .IPP is already open (and hence |
219 | * has a valid unit number already) so we don't need to go through |
220 | * all that. (MacTCP Programmer's Guide p6) |
193194e2 |
221 | */ |
222 | err = OpenDriver("\p.IPP", &mactcp.refnum); |
223 | if (err != noErr) return err; |
224 | err = OpenResolver(NULL); |
225 | if (err != noErr) return err; |
226 | |
227 | mactcp.initialised = TRUE; |
228 | return noErr; |
229 | } |
230 | |
231 | void mactcp_shutdown(void) |
232 | { |
233 | |
234 | CloseResolver(); |
235 | mactcp.initialised = FALSE; |
236 | } |
237 | |
238 | static ResultUPP mactcp_lookupdone_upp; |
239 | |
240 | SockAddr sk_namelookup(char *host, char **canonicalname) |
241 | { |
242 | SockAddr ret = smalloc(sizeof(struct SockAddr_tag)); |
243 | OSErr err; |
244 | volatile int done = FALSE; |
245 | char *realhost; |
246 | |
2beb0fb0 |
247 | fprintf(stderr, "Resolving %s...\n", host); |
193194e2 |
248 | /* Clear the structure. */ |
249 | memset(ret, 0, sizeof(struct SockAddr_tag)); |
250 | if (mactcp_lookupdone_upp == NULL) |
251 | mactcp_lookupdone_upp = NewResultUPP(&mactcp_lookupdone); |
252 | err = StrToAddr(host, &ret->hostinfo, mactcp_lookupdone_upp, |
253 | (char *)&done); |
254 | /* |
255 | * PuTTY expects DNS lookups to be synchronous (see bug |
256 | * "async-dns"), so we pretend they are. |
257 | */ |
258 | if (err == cacheFault) |
259 | while (!done) |
260 | continue; |
261 | ret->resolved = TRUE; |
262 | |
263 | if (ret->hostinfo.rtnCode == noErr) |
264 | realhost = ret->hostinfo.cname; |
265 | else |
266 | realhost = ""; |
267 | *canonicalname = smalloc(1+strlen(realhost)); |
268 | strcpy(*canonicalname, realhost); |
2beb0fb0 |
269 | fprintf(stderr, "canonical name = %s\n", realhost); |
193194e2 |
270 | return ret; |
271 | } |
272 | |
273 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie) |
274 | { |
275 | volatile int *donep = (int *)cookie; |
276 | |
277 | *donep = TRUE; |
278 | } |
279 | |
280 | SockAddr sk_nonamelookup(char *host) |
281 | { |
282 | SockAddr ret = smalloc(sizeof(struct SockAddr_tag)); |
283 | |
284 | ret->resolved = FALSE; |
285 | ret->hostinfo.rtnCode = noErr; |
286 | ret->hostname[0] = '\0'; |
287 | strncat(ret->hostname, host, lenof(ret->hostname) - 1); |
288 | return ret; |
289 | } |
290 | |
291 | void sk_getaddr(SockAddr addr, char *buf, int buflen) |
292 | { |
293 | char mybuf[16]; |
294 | OSErr err; |
295 | |
d25f9823 |
296 | if (addr->resolved) { |
297 | /* XXX only return first address */ |
298 | err = AddrToStr(addr->hostinfo.addr[0], mybuf); |
299 | buf[0] = '\0'; |
300 | if (err != noErr) |
301 | strncat(buf, mybuf, buflen - 1); |
302 | } else { |
303 | buf[0] = '\0'; |
304 | strncat(buf, addr->hostname, buflen - 1); |
305 | } |
193194e2 |
306 | } |
307 | |
308 | /* I think "local" here really means "loopback" */ |
309 | |
310 | int sk_hostname_is_local(char *name) |
311 | { |
312 | |
313 | return !strcmp(name, "localhost"); |
314 | } |
315 | |
316 | int sk_address_is_local(SockAddr addr) |
317 | { |
318 | int i; |
319 | |
320 | if (addr->resolved) |
321 | for (i = 0; i < NUM_ALT_ADDRS; i++) |
322 | if (addr->hostinfo.addr[i] & 0xff000000 == 0x7f000000) |
323 | return TRUE; |
324 | return FALSE; |
325 | } |
326 | |
327 | int sk_addrtype(SockAddr addr) |
328 | { |
329 | |
330 | if (addr->resolved) |
331 | return ADDRTYPE_IPV4; |
332 | return ADDRTYPE_NAME; |
333 | } |
334 | |
335 | void sk_addrcopy(SockAddr addr, char *buf) |
336 | { |
337 | |
338 | /* XXX only return first address */ |
339 | memcpy(buf, &addr->hostinfo.addr[0], 4); |
340 | } |
341 | |
342 | void sk_addr_free(SockAddr addr) |
343 | { |
344 | |
345 | sfree(addr); |
346 | } |
347 | |
2beb0fb0 |
348 | static Plug mactcp_plug(Socket sock, Plug p) |
349 | { |
350 | Actual_Socket s = (Actual_Socket) sock; |
351 | Plug ret = s->plug; |
352 | |
353 | if (p) |
354 | s->plug = p; |
355 | return ret; |
356 | } |
357 | |
358 | static void mactcp_flush(Socket s) |
359 | { |
360 | |
361 | fatalbox("sk_tcp_flush"); |
362 | } |
363 | |
193194e2 |
364 | Socket sk_new(SockAddr addr, int port, int privport, int oobinline, |
365 | int nodelay, Plug plug) |
366 | { |
2beb0fb0 |
367 | static struct socket_function_table fn_table = { |
368 | mactcp_plug, |
369 | mactcp_close, |
370 | mactcp_write, |
371 | mactcp_write_oob, |
372 | mactcp_flush, |
373 | mactcp_set_private_ptr, |
374 | mactcp_get_private_ptr, |
375 | mactcp_set_frozen, |
376 | mactcp_socket_error |
377 | }; |
378 | TCPiopb pb; |
379 | UDPiopb upb; |
380 | Actual_Socket ret; |
381 | ip_addr dstaddr; |
382 | size_t buflen; |
383 | |
384 | fprintf(stderr, "Opening socket, port = %d\n", port); |
385 | /* |
386 | * Create Socket structure. |
387 | */ |
388 | ret = smalloc(sizeof(struct Socket_tag)); |
389 | ret->s = 0; |
390 | ret->fn = &fn_table; |
391 | ret->err = noErr; |
392 | ret->plug = plug; |
393 | bufchain_init(&ret->output_data); |
394 | ret->connected = 0; /* to start with */ |
395 | ret->writable = 0; /* to start with */ |
396 | ret->sending_oob = 0; |
397 | ret->frozen = 0; |
398 | ret->frozen_readable = 0; |
399 | ret->localhost_only = 0; /* unused, but best init anyway */ |
400 | ret->pending_error = 0; |
d25f9823 |
401 | ret->oobinline = oobinline; |
2beb0fb0 |
402 | ret->oobpending = FALSE; |
403 | ret->listener = 0; |
404 | |
405 | dstaddr = addr->hostinfo.addr[0]; /* XXX should try all of them */ |
406 | /* |
407 | * Create a TCP stream. |
408 | * |
409 | * MacTCP requires us to provide it with some buffer memory. Page |
410 | * 31 of the Programmer's Guide says it should be a minimum of |
411 | * 4*MTU+1024. Page 36 says a minimum of 4096 bytes. Assume |
412 | * they're both correct. |
413 | */ |
414 | assert(addr->resolved); |
415 | upb.ioCRefNum = mactcp.refnum; |
416 | upb.csCode = UDPMaxMTUSize; |
417 | upb.csParam.mtu.remoteHost = dstaddr; |
418 | upb.csParam.mtu.userDataPtr = NULL; |
419 | ret->err = PBControlSync((ParmBlkPtr)&upb); |
420 | fprintf(stderr, "getting mtu, err = %d\n", ret->err); |
421 | if (ret->err != noErr) return (Socket)ret; |
422 | fprintf(stderr, "Got MTU = %d\n", upb.csParam.mtu.mtuSize); |
423 | |
424 | buflen = upb.csParam.mtu.mtuSize * 4 + 1024; |
425 | if (buflen < 4096) buflen = 4096; |
426 | pb.ioCRefNum = mactcp.refnum; |
427 | pb.csCode = TCPCreate; |
428 | pb.csParam.create.rcvBuff = smalloc(buflen); |
429 | pb.csParam.create.rcvBuffLen = buflen; |
430 | pb.csParam.create.notifyProc = NULL; |
431 | pb.csParam.create.userDataPtr = (Ptr)ret; |
432 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
433 | if (ret->err != noErr) return (Socket)ret; |
434 | ret->s = pb.tcpStream; |
435 | fprintf(stderr, "stream opened\n"); |
436 | |
437 | /* |
438 | * Open the connection. |
439 | */ |
440 | pb.ioCRefNum = mactcp.refnum; |
441 | pb.csCode = TCPActiveOpen; |
442 | pb.tcpStream = ret->s; |
443 | pb.csParam.open.validityFlags = 0; |
444 | pb.csParam.open.remoteHost = dstaddr; |
445 | pb.csParam.open.remotePort = port; |
446 | pb.csParam.open.localPort = privport ? 1023 : 0; |
447 | pb.csParam.open.dontFrag = FALSE; |
448 | pb.csParam.open.timeToLive = 0; |
449 | pb.csParam.open.security = 0; |
450 | pb.csParam.open.optionCnt = 0; |
451 | pb.csParam.open.userDataPtr = (Ptr)ret; |
452 | while (1) { |
453 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
454 | if (!privport || ret->err != duplicateSocket) |
455 | break; |
456 | pb.csParam.open.localPort--; |
457 | if (pb.csParam.open.localPort == 0) |
458 | break; |
459 | } |
460 | |
461 | if (ret->err != noErr) return (Socket)ret; |
462 | |
463 | ret->connected = TRUE; |
464 | ret->writable = TRUE; |
465 | |
d25f9823 |
466 | /* Add this to the list of all sockets */ |
467 | ret->next = mactcp.socklist; |
468 | ret->prev = &mactcp.socklist; |
469 | mactcp.socklist = ret; |
470 | |
2beb0fb0 |
471 | fprintf(stderr, "Socket connected\n"); |
472 | return (Socket)ret; |
473 | } |
474 | |
475 | static void mactcp_close(Socket sock) |
476 | { |
477 | Actual_Socket s = (Actual_Socket)sock; |
478 | TCPiopb pb; |
479 | |
480 | /* |
481 | * TCPClose is equivalent to shutdown(fd, SHUT_WR), and hence |
482 | * leaves the Rx side open, while TCPAbort seems rather vicious, |
483 | * throwing away Tx data that haven't been ACKed yet. We do both |
484 | * in succession. |
485 | */ |
486 | pb.ioCRefNum = mactcp.refnum; |
487 | pb.csCode = TCPClose; |
488 | pb.tcpStream = s->s; |
489 | pb.csParam.close.validityFlags = 0; |
490 | pb.csParam.close.userDataPtr = (Ptr)s; |
491 | s->err = PBControlSync((ParmBlkPtr)&pb); |
492 | /* Not much we can do about an error anyway. */ |
493 | |
494 | pb.ioCRefNum = mactcp.refnum; |
495 | pb.csCode = TCPAbort; |
496 | pb.tcpStream = s->s; |
497 | pb.csParam.abort.userDataPtr = (Ptr)s; |
498 | s->err = PBControlSync((ParmBlkPtr)&pb); |
499 | /* Even less we can do about an error here. */ |
500 | |
501 | pb.ioCRefNum = mactcp.refnum; |
502 | pb.csCode = TCPRelease; |
503 | pb.tcpStream = s->s; |
504 | pb.csParam.create.userDataPtr = (Ptr)s; |
505 | s->err = PBControlSync((ParmBlkPtr)&pb); |
506 | if (s->err == noErr) |
507 | sfree(pb.csParam.create.rcvBuff); |
d25f9823 |
508 | |
509 | /* Unhitch from list of sockets */ |
510 | *s->prev = s->next; |
511 | if (s->next != NULL) |
512 | s->next->prev = s->prev; |
513 | |
2beb0fb0 |
514 | sfree(s); |
515 | } |
516 | |
517 | static int mactcp_write(Socket sock, char *buf, int len) |
518 | { |
519 | Actual_Socket s = (Actual_Socket) sock; |
520 | wdsEntry wds[2]; |
521 | TCPiopb pb; |
522 | |
2beb0fb0 |
523 | wds[0].length = len; |
524 | wds[0].ptr = buf; |
525 | wds[1].length = 0; |
526 | |
527 | pb.ioCRefNum = mactcp.refnum; |
528 | pb.csCode = TCPSend; |
529 | pb.tcpStream = s->s; |
530 | pb.csParam.send.validityFlags = 0; |
531 | pb.csParam.send.pushFlag = TRUE; /* XXX we want it to return. */ |
532 | pb.csParam.send.urgentFlag = 0; |
533 | pb.csParam.send.wdsPtr = (Ptr)wds; |
534 | pb.csParam.send.userDataPtr = (Ptr)s; |
535 | s->err = PBControlSync((ParmBlkPtr)&pb); |
536 | return 0; |
537 | } |
538 | |
539 | static int mactcp_write_oob(Socket sock, char *buf, int len) |
540 | { |
541 | |
542 | fatalbox("mactcp_write_oob"); |
543 | } |
544 | |
545 | /* |
d25f9823 |
546 | * Called from our event loop if there's work to do. |
547 | */ |
548 | void mactcp_poll(void) |
549 | { |
550 | Actual_Socket s; |
551 | TCPiopb pb; |
552 | |
553 | for (s = mactcp.socklist; s != NULL; s = s->next) { |
554 | /* XXX above can't handle sockets being deleted. */ |
555 | pb.ioCRefNum = mactcp.refnum; |
556 | pb.csCode = TCPStatus; |
557 | pb.tcpStream = s->s; |
558 | pb.csParam.status.userDataPtr = (Ptr)s; |
559 | s->err = PBControlSync((ParmBlkPtr)&pb); |
560 | if (s->err != noErr) |
561 | continue; |
562 | if (pb.csParam.status.amtUnreadData > 0) |
563 | mactcp_recv(s, pb.csParam.status.amtUnreadData); |
564 | /* Should check connectionState in case remote has closed */ |
565 | } |
566 | } |
567 | |
568 | static void mactcp_recv(Actual_Socket s, size_t len) |
569 | { |
570 | rdsEntry rds[2]; |
571 | TCPiopb pb; |
572 | |
573 | if (s->frozen) return; |
574 | |
575 | while (len > 0) { |
576 | pb.ioCRefNum = mactcp.refnum; |
577 | pb.csCode = TCPNoCopyRcv; |
578 | pb.tcpStream = s->s; |
579 | pb.csParam.receive.commandTimeoutValue = 0; |
580 | pb.csParam.receive.rdsPtr = (Ptr)rds; |
581 | pb.csParam.receive.rdsLength = lenof(rds) - 1; |
582 | pb.csParam.receive.userDataPtr = (Ptr)s; |
583 | s->err = PBControlSync((ParmBlkPtr)&pb); |
584 | if (s->err != noErr) |
585 | return; |
586 | plug_receive(s->plug, 0, rds[0].ptr, rds[0].length); |
587 | len -= rds[0].length; |
588 | pb.csCode = TCPRcvBfrReturn; |
589 | s->err = PBControlSync((ParmBlkPtr)&pb); |
590 | if (s->err != noErr) |
591 | return; |
592 | } |
593 | } |
594 | |
595 | /* |
2beb0fb0 |
596 | * Each socket abstraction contains a `void *' private field in |
597 | * which the client can keep state. |
598 | */ |
599 | static void mactcp_set_private_ptr(Socket sock, void *ptr) |
600 | { |
601 | Actual_Socket s = (Actual_Socket) sock; |
602 | s->private_ptr = ptr; |
603 | } |
193194e2 |
604 | |
2beb0fb0 |
605 | static void *mactcp_get_private_ptr(Socket sock) |
606 | { |
607 | Actual_Socket s = (Actual_Socket) sock; |
608 | return s->private_ptr; |
193194e2 |
609 | } |
610 | |
611 | /* |
612 | * Special error values are returned from sk_namelookup and sk_new |
613 | * if there's a problem. These functions extract an error message, |
614 | * or return NULL if there's no problem. |
615 | */ |
616 | char *sk_addr_error(SockAddr addr) |
617 | { |
618 | static char buf[64]; |
619 | |
620 | switch (addr->hostinfo.rtnCode) { |
621 | case noErr: |
622 | return NULL; |
623 | case nameSyntaxErr: |
624 | return "Name syntax error"; |
625 | case noNameServer: |
626 | return "No name server found"; |
627 | case authNameErr: |
628 | return "Domain name does not exist"; |
629 | case noAnsErr: |
630 | return "No answer from domain name server"; |
631 | case dnrErr: |
632 | return "Domain name server returned an error"; |
633 | case outOfMemory: |
634 | return "Out of memory"; |
635 | default: |
636 | sprintf(buf, "Unknown DNR error %d", addr->hostinfo.rtnCode); |
637 | return buf; |
638 | } |
639 | } |
640 | |
2beb0fb0 |
641 | static char *mactcp_socket_error(Socket sock) |
642 | { |
643 | static char buf[64]; |
644 | Actual_Socket s = (Actual_Socket) sock; |
645 | |
646 | switch (s->err) { |
647 | case noErr: |
648 | return NULL; |
649 | case insufficientResources: |
650 | return "Insufficient resources to open TCP stream"; |
651 | case duplicateSocket: |
652 | return "Duplicate socket"; |
653 | case openFailed: |
654 | return "Connection failed while opening"; |
655 | default: |
656 | sprintf(buf, "Unknown MacTCP error %d", s->err); |
657 | return buf; |
658 | } |
659 | } |
660 | |
661 | static void mactcp_set_frozen(Socket sock, int is_frozen) |
662 | { |
d25f9823 |
663 | Actual_Socket s = (Actual_Socket) sock; |
2beb0fb0 |
664 | |
d25f9823 |
665 | if (s->frozen == is_frozen) |
666 | return; |
667 | s->frozen = is_frozen; |
2beb0fb0 |
668 | } |
193194e2 |
669 | |
670 | /* |
671 | * Bits below here would usually be in dnr.c, shipped with the MacTCP |
672 | * SDK, but its convenient not to require that, and since we assume |
673 | * System 7 we can actually simplify things a lot. |
674 | */ |
675 | |
676 | static OSErr OpenResolver(char *hosts_file) |
677 | { |
678 | short vrefnum; |
679 | long dirid; |
680 | HParamBlockRec pb; |
681 | Str255 filename; |
682 | OSErr err; |
683 | int fd; |
684 | Handle dnr_handle; |
685 | |
686 | if (mactcp.dnr_handle != NULL) |
687 | return noErr; |
688 | |
689 | err = FindFolder(kOnSystemDisk, kControlPanelFolderType, FALSE, &vrefnum, |
690 | &dirid); |
691 | if (err != noErr) return err; |
692 | |
693 | /* |
694 | * Might be better to use PBCatSearch here, but it's not always |
695 | * available. |
696 | */ |
697 | pb.fileParam.ioCompletion = NULL; |
698 | pb.fileParam.ioNamePtr = filename; |
699 | pb.fileParam.ioVRefNum = vrefnum; |
700 | pb.fileParam.ioFDirIndex = 1; |
701 | pb.fileParam.ioDirID = dirid; |
702 | fd = -1; |
703 | |
2beb0fb0 |
704 | while (PBHGetFInfoSync(&pb) == noErr) { |
193194e2 |
705 | if (pb.fileParam.ioFlFndrInfo.fdType == 'cdev' && |
706 | pb.fileParam.ioFlFndrInfo.fdCreator == 'ztcp') { |
707 | fd = HOpenResFile(vrefnum, dirid, filename, fsRdPerm); |
708 | if (fd == -1) continue; |
709 | dnr_handle = Get1IndResource('dnrp', 1); |
710 | if (dnr_handle != NULL) |
711 | break; |
712 | CloseResFile(fd); |
713 | fd = -1; |
714 | } |
715 | pb.fileParam.ioDirID = dirid; |
716 | pb.fileParam.ioFDirIndex++; |
717 | } |
718 | if (fd == -1) |
719 | return fnfErr; |
720 | |
721 | DetachResource(dnr_handle); |
722 | CloseResFile(fd); |
723 | |
724 | MoveHHi(dnr_handle); |
725 | HLock(dnr_handle); |
726 | |
727 | err = InvokeOpenResolverUPP(OPENRESOLVER, hosts_file, |
728 | (OpenResolverUPP)*dnr_handle); |
729 | if (err != noErr) { |
730 | HUnlock(dnr_handle); |
731 | DisposeHandle(dnr_handle); |
732 | return err; |
733 | } |
734 | |
735 | mactcp.dnr_handle = dnr_handle; |
736 | return noErr; |
737 | } |
738 | |
739 | OSErr CloseResolver(void) |
740 | { |
741 | Handle dnr_handle = mactcp.dnr_handle; |
742 | OSErr err; |
743 | |
744 | if (mactcp.dnr_handle == NULL) |
745 | return notOpenErr; |
746 | |
747 | err = InvokeCloseResolverUPP(CLOSERESOLVER, |
748 | (CloseResolverUPP)*mactcp.dnr_handle); |
749 | if (err != noErr) |
750 | return err; |
751 | |
752 | mactcp.dnr_handle = NULL; |
753 | HUnlock(dnr_handle); |
754 | DisposeHandle(dnr_handle); |
755 | return noErr; |
756 | } |
757 | |
758 | /* |
759 | * Local Variables: |
760 | * c-file-style: "simon" |
761 | * End: |
762 | */ |