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 | |
247 | /* Clear the structure. */ |
248 | memset(ret, 0, sizeof(struct SockAddr_tag)); |
249 | if (mactcp_lookupdone_upp == NULL) |
250 | mactcp_lookupdone_upp = NewResultUPP(&mactcp_lookupdone); |
251 | err = StrToAddr(host, &ret->hostinfo, mactcp_lookupdone_upp, |
252 | (char *)&done); |
253 | /* |
254 | * PuTTY expects DNS lookups to be synchronous (see bug |
255 | * "async-dns"), so we pretend they are. |
256 | */ |
257 | if (err == cacheFault) |
258 | while (!done) |
259 | continue; |
260 | ret->resolved = TRUE; |
261 | |
262 | if (ret->hostinfo.rtnCode == noErr) |
263 | realhost = ret->hostinfo.cname; |
264 | else |
265 | realhost = ""; |
266 | *canonicalname = smalloc(1+strlen(realhost)); |
267 | strcpy(*canonicalname, realhost); |
268 | return ret; |
269 | } |
270 | |
271 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie) |
272 | { |
273 | volatile int *donep = (int *)cookie; |
274 | |
275 | *donep = TRUE; |
276 | } |
277 | |
278 | SockAddr sk_nonamelookup(char *host) |
279 | { |
280 | SockAddr ret = smalloc(sizeof(struct SockAddr_tag)); |
281 | |
282 | ret->resolved = FALSE; |
283 | ret->hostinfo.rtnCode = noErr; |
284 | ret->hostname[0] = '\0'; |
285 | strncat(ret->hostname, host, lenof(ret->hostname) - 1); |
286 | return ret; |
287 | } |
288 | |
289 | void sk_getaddr(SockAddr addr, char *buf, int buflen) |
290 | { |
291 | char mybuf[16]; |
292 | OSErr err; |
293 | |
d25f9823 |
294 | if (addr->resolved) { |
295 | /* XXX only return first address */ |
296 | err = AddrToStr(addr->hostinfo.addr[0], mybuf); |
297 | buf[0] = '\0'; |
298 | if (err != noErr) |
299 | strncat(buf, mybuf, buflen - 1); |
300 | } else { |
301 | buf[0] = '\0'; |
302 | strncat(buf, addr->hostname, buflen - 1); |
303 | } |
193194e2 |
304 | } |
305 | |
306 | /* I think "local" here really means "loopback" */ |
307 | |
308 | int sk_hostname_is_local(char *name) |
309 | { |
310 | |
311 | return !strcmp(name, "localhost"); |
312 | } |
313 | |
314 | int sk_address_is_local(SockAddr addr) |
315 | { |
316 | int i; |
317 | |
318 | if (addr->resolved) |
319 | for (i = 0; i < NUM_ALT_ADDRS; i++) |
320 | if (addr->hostinfo.addr[i] & 0xff000000 == 0x7f000000) |
321 | return TRUE; |
322 | return FALSE; |
323 | } |
324 | |
325 | int sk_addrtype(SockAddr addr) |
326 | { |
327 | |
328 | if (addr->resolved) |
329 | return ADDRTYPE_IPV4; |
330 | return ADDRTYPE_NAME; |
331 | } |
332 | |
333 | void sk_addrcopy(SockAddr addr, char *buf) |
334 | { |
335 | |
336 | /* XXX only return first address */ |
337 | memcpy(buf, &addr->hostinfo.addr[0], 4); |
338 | } |
339 | |
340 | void sk_addr_free(SockAddr addr) |
341 | { |
342 | |
343 | sfree(addr); |
344 | } |
345 | |
2beb0fb0 |
346 | static Plug mactcp_plug(Socket sock, Plug p) |
347 | { |
348 | Actual_Socket s = (Actual_Socket) sock; |
349 | Plug ret = s->plug; |
350 | |
351 | if (p) |
352 | s->plug = p; |
353 | return ret; |
354 | } |
355 | |
356 | static void mactcp_flush(Socket s) |
357 | { |
358 | |
359 | fatalbox("sk_tcp_flush"); |
360 | } |
361 | |
0c4b7799 |
362 | Socket sk_register(void *sock, Plug plug) |
363 | { |
364 | |
365 | fatalbox("sk_register"); |
366 | } |
367 | |
193194e2 |
368 | Socket sk_new(SockAddr addr, int port, int privport, int oobinline, |
369 | int nodelay, Plug plug) |
370 | { |
2beb0fb0 |
371 | static struct socket_function_table fn_table = { |
372 | mactcp_plug, |
373 | mactcp_close, |
374 | mactcp_write, |
375 | mactcp_write_oob, |
376 | mactcp_flush, |
377 | mactcp_set_private_ptr, |
378 | mactcp_get_private_ptr, |
379 | mactcp_set_frozen, |
380 | mactcp_socket_error |
381 | }; |
382 | TCPiopb pb; |
383 | UDPiopb upb; |
384 | Actual_Socket ret; |
385 | ip_addr dstaddr; |
386 | size_t buflen; |
387 | |
2beb0fb0 |
388 | /* |
389 | * Create Socket structure. |
390 | */ |
391 | ret = smalloc(sizeof(struct Socket_tag)); |
392 | ret->s = 0; |
393 | ret->fn = &fn_table; |
394 | ret->err = noErr; |
395 | ret->plug = plug; |
396 | bufchain_init(&ret->output_data); |
397 | ret->connected = 0; /* to start with */ |
398 | ret->writable = 0; /* to start with */ |
399 | ret->sending_oob = 0; |
400 | ret->frozen = 0; |
401 | ret->frozen_readable = 0; |
402 | ret->localhost_only = 0; /* unused, but best init anyway */ |
403 | ret->pending_error = 0; |
d25f9823 |
404 | ret->oobinline = oobinline; |
2beb0fb0 |
405 | ret->oobpending = FALSE; |
406 | ret->listener = 0; |
407 | |
408 | dstaddr = addr->hostinfo.addr[0]; /* XXX should try all of them */ |
409 | /* |
410 | * Create a TCP stream. |
411 | * |
412 | * MacTCP requires us to provide it with some buffer memory. Page |
413 | * 31 of the Programmer's Guide says it should be a minimum of |
414 | * 4*MTU+1024. Page 36 says a minimum of 4096 bytes. Assume |
415 | * they're both correct. |
416 | */ |
417 | assert(addr->resolved); |
418 | upb.ioCRefNum = mactcp.refnum; |
419 | upb.csCode = UDPMaxMTUSize; |
420 | upb.csParam.mtu.remoteHost = dstaddr; |
421 | upb.csParam.mtu.userDataPtr = NULL; |
422 | ret->err = PBControlSync((ParmBlkPtr)&upb); |
2beb0fb0 |
423 | if (ret->err != noErr) return (Socket)ret; |
2beb0fb0 |
424 | |
425 | buflen = upb.csParam.mtu.mtuSize * 4 + 1024; |
426 | if (buflen < 4096) buflen = 4096; |
427 | pb.ioCRefNum = mactcp.refnum; |
428 | pb.csCode = TCPCreate; |
429 | pb.csParam.create.rcvBuff = smalloc(buflen); |
430 | pb.csParam.create.rcvBuffLen = buflen; |
431 | pb.csParam.create.notifyProc = NULL; |
432 | pb.csParam.create.userDataPtr = (Ptr)ret; |
433 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
434 | if (ret->err != noErr) return (Socket)ret; |
435 | ret->s = pb.tcpStream; |
2beb0fb0 |
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; |
0c4b7799 |
469 | ret->next->prev = &ret->next; |
d25f9823 |
470 | mactcp.socklist = ret; |
471 | |
2beb0fb0 |
472 | return (Socket)ret; |
473 | } |
474 | |
0c4b7799 |
475 | Socket sk_newlistener(char *srcaddr, int port, Plug plug, int local_host_only) |
476 | { |
477 | |
478 | fatalbox("sk_newlistener"); |
479 | } |
480 | |
2beb0fb0 |
481 | static void mactcp_close(Socket sock) |
482 | { |
483 | Actual_Socket s = (Actual_Socket)sock; |
484 | TCPiopb pb; |
485 | |
486 | /* |
487 | * TCPClose is equivalent to shutdown(fd, SHUT_WR), and hence |
488 | * leaves the Rx side open, while TCPAbort seems rather vicious, |
489 | * throwing away Tx data that haven't been ACKed yet. We do both |
490 | * in succession. |
491 | */ |
492 | pb.ioCRefNum = mactcp.refnum; |
493 | pb.csCode = TCPClose; |
494 | pb.tcpStream = s->s; |
495 | pb.csParam.close.validityFlags = 0; |
496 | pb.csParam.close.userDataPtr = (Ptr)s; |
497 | s->err = PBControlSync((ParmBlkPtr)&pb); |
498 | /* Not much we can do about an error anyway. */ |
499 | |
500 | pb.ioCRefNum = mactcp.refnum; |
501 | pb.csCode = TCPAbort; |
502 | pb.tcpStream = s->s; |
503 | pb.csParam.abort.userDataPtr = (Ptr)s; |
504 | s->err = PBControlSync((ParmBlkPtr)&pb); |
505 | /* Even less we can do about an error here. */ |
506 | |
507 | pb.ioCRefNum = mactcp.refnum; |
508 | pb.csCode = TCPRelease; |
509 | pb.tcpStream = s->s; |
510 | pb.csParam.create.userDataPtr = (Ptr)s; |
511 | s->err = PBControlSync((ParmBlkPtr)&pb); |
512 | if (s->err == noErr) |
513 | sfree(pb.csParam.create.rcvBuff); |
d25f9823 |
514 | |
515 | /* Unhitch from list of sockets */ |
516 | *s->prev = s->next; |
517 | if (s->next != NULL) |
518 | s->next->prev = s->prev; |
519 | |
2beb0fb0 |
520 | sfree(s); |
521 | } |
522 | |
523 | static int mactcp_write(Socket sock, char *buf, int len) |
524 | { |
525 | Actual_Socket s = (Actual_Socket) sock; |
526 | wdsEntry wds[2]; |
527 | TCPiopb pb; |
528 | |
2beb0fb0 |
529 | wds[0].length = len; |
530 | wds[0].ptr = buf; |
531 | wds[1].length = 0; |
532 | |
533 | pb.ioCRefNum = mactcp.refnum; |
534 | pb.csCode = TCPSend; |
535 | pb.tcpStream = s->s; |
536 | pb.csParam.send.validityFlags = 0; |
537 | pb.csParam.send.pushFlag = TRUE; /* XXX we want it to return. */ |
538 | pb.csParam.send.urgentFlag = 0; |
539 | pb.csParam.send.wdsPtr = (Ptr)wds; |
540 | pb.csParam.send.userDataPtr = (Ptr)s; |
541 | s->err = PBControlSync((ParmBlkPtr)&pb); |
542 | return 0; |
543 | } |
544 | |
545 | static int mactcp_write_oob(Socket sock, char *buf, int len) |
546 | { |
547 | |
548 | fatalbox("mactcp_write_oob"); |
549 | } |
550 | |
551 | /* |
d25f9823 |
552 | * Called from our event loop if there's work to do. |
553 | */ |
554 | void mactcp_poll(void) |
555 | { |
556 | Actual_Socket s; |
557 | TCPiopb pb; |
558 | |
559 | for (s = mactcp.socklist; s != NULL; s = s->next) { |
560 | /* XXX above can't handle sockets being deleted. */ |
561 | pb.ioCRefNum = mactcp.refnum; |
562 | pb.csCode = TCPStatus; |
563 | pb.tcpStream = s->s; |
564 | pb.csParam.status.userDataPtr = (Ptr)s; |
565 | s->err = PBControlSync((ParmBlkPtr)&pb); |
566 | if (s->err != noErr) |
567 | continue; |
568 | if (pb.csParam.status.amtUnreadData > 0) |
569 | mactcp_recv(s, pb.csParam.status.amtUnreadData); |
570 | /* Should check connectionState in case remote has closed */ |
571 | } |
572 | } |
573 | |
574 | static void mactcp_recv(Actual_Socket s, size_t len) |
575 | { |
576 | rdsEntry rds[2]; |
577 | TCPiopb pb; |
578 | |
579 | if (s->frozen) return; |
580 | |
581 | while (len > 0) { |
582 | pb.ioCRefNum = mactcp.refnum; |
583 | pb.csCode = TCPNoCopyRcv; |
584 | pb.tcpStream = s->s; |
585 | pb.csParam.receive.commandTimeoutValue = 0; |
586 | pb.csParam.receive.rdsPtr = (Ptr)rds; |
587 | pb.csParam.receive.rdsLength = lenof(rds) - 1; |
588 | pb.csParam.receive.userDataPtr = (Ptr)s; |
589 | s->err = PBControlSync((ParmBlkPtr)&pb); |
590 | if (s->err != noErr) |
591 | return; |
592 | plug_receive(s->plug, 0, rds[0].ptr, rds[0].length); |
593 | len -= rds[0].length; |
594 | pb.csCode = TCPRcvBfrReturn; |
595 | s->err = PBControlSync((ParmBlkPtr)&pb); |
596 | if (s->err != noErr) |
597 | return; |
598 | } |
599 | } |
600 | |
601 | /* |
2beb0fb0 |
602 | * Each socket abstraction contains a `void *' private field in |
603 | * which the client can keep state. |
604 | */ |
605 | static void mactcp_set_private_ptr(Socket sock, void *ptr) |
606 | { |
607 | Actual_Socket s = (Actual_Socket) sock; |
608 | s->private_ptr = ptr; |
609 | } |
193194e2 |
610 | |
2beb0fb0 |
611 | static void *mactcp_get_private_ptr(Socket sock) |
612 | { |
613 | Actual_Socket s = (Actual_Socket) sock; |
614 | return s->private_ptr; |
193194e2 |
615 | } |
616 | |
617 | /* |
618 | * Special error values are returned from sk_namelookup and sk_new |
619 | * if there's a problem. These functions extract an error message, |
620 | * or return NULL if there's no problem. |
621 | */ |
622 | char *sk_addr_error(SockAddr addr) |
623 | { |
624 | static char buf[64]; |
625 | |
626 | switch (addr->hostinfo.rtnCode) { |
627 | case noErr: |
628 | return NULL; |
629 | case nameSyntaxErr: |
630 | return "Name syntax error"; |
631 | case noNameServer: |
632 | return "No name server found"; |
633 | case authNameErr: |
634 | return "Domain name does not exist"; |
635 | case noAnsErr: |
636 | return "No answer from domain name server"; |
637 | case dnrErr: |
638 | return "Domain name server returned an error"; |
639 | case outOfMemory: |
640 | return "Out of memory"; |
641 | default: |
642 | sprintf(buf, "Unknown DNR error %d", addr->hostinfo.rtnCode); |
643 | return buf; |
644 | } |
645 | } |
646 | |
2beb0fb0 |
647 | static char *mactcp_socket_error(Socket sock) |
648 | { |
649 | static char buf[64]; |
650 | Actual_Socket s = (Actual_Socket) sock; |
651 | |
652 | switch (s->err) { |
653 | case noErr: |
654 | return NULL; |
655 | case insufficientResources: |
656 | return "Insufficient resources to open TCP stream"; |
657 | case duplicateSocket: |
658 | return "Duplicate socket"; |
659 | case openFailed: |
660 | return "Connection failed while opening"; |
661 | default: |
662 | sprintf(buf, "Unknown MacTCP error %d", s->err); |
663 | return buf; |
664 | } |
665 | } |
666 | |
667 | static void mactcp_set_frozen(Socket sock, int is_frozen) |
668 | { |
d25f9823 |
669 | Actual_Socket s = (Actual_Socket) sock; |
2beb0fb0 |
670 | |
d25f9823 |
671 | if (s->frozen == is_frozen) |
672 | return; |
673 | s->frozen = is_frozen; |
2beb0fb0 |
674 | } |
193194e2 |
675 | |
676 | /* |
677 | * Bits below here would usually be in dnr.c, shipped with the MacTCP |
678 | * SDK, but its convenient not to require that, and since we assume |
679 | * System 7 we can actually simplify things a lot. |
680 | */ |
681 | |
682 | static OSErr OpenResolver(char *hosts_file) |
683 | { |
684 | short vrefnum; |
685 | long dirid; |
686 | HParamBlockRec pb; |
687 | Str255 filename; |
688 | OSErr err; |
689 | int fd; |
690 | Handle dnr_handle; |
691 | |
692 | if (mactcp.dnr_handle != NULL) |
693 | return noErr; |
694 | |
695 | err = FindFolder(kOnSystemDisk, kControlPanelFolderType, FALSE, &vrefnum, |
696 | &dirid); |
697 | if (err != noErr) return err; |
698 | |
699 | /* |
700 | * Might be better to use PBCatSearch here, but it's not always |
701 | * available. |
702 | */ |
703 | pb.fileParam.ioCompletion = NULL; |
704 | pb.fileParam.ioNamePtr = filename; |
705 | pb.fileParam.ioVRefNum = vrefnum; |
706 | pb.fileParam.ioFDirIndex = 1; |
707 | pb.fileParam.ioDirID = dirid; |
708 | fd = -1; |
709 | |
2beb0fb0 |
710 | while (PBHGetFInfoSync(&pb) == noErr) { |
193194e2 |
711 | if (pb.fileParam.ioFlFndrInfo.fdType == 'cdev' && |
712 | pb.fileParam.ioFlFndrInfo.fdCreator == 'ztcp') { |
713 | fd = HOpenResFile(vrefnum, dirid, filename, fsRdPerm); |
714 | if (fd == -1) continue; |
715 | dnr_handle = Get1IndResource('dnrp', 1); |
716 | if (dnr_handle != NULL) |
717 | break; |
718 | CloseResFile(fd); |
719 | fd = -1; |
720 | } |
721 | pb.fileParam.ioDirID = dirid; |
722 | pb.fileParam.ioFDirIndex++; |
723 | } |
724 | if (fd == -1) |
725 | return fnfErr; |
726 | |
727 | DetachResource(dnr_handle); |
728 | CloseResFile(fd); |
729 | |
730 | MoveHHi(dnr_handle); |
731 | HLock(dnr_handle); |
732 | |
733 | err = InvokeOpenResolverUPP(OPENRESOLVER, hosts_file, |
734 | (OpenResolverUPP)*dnr_handle); |
735 | if (err != noErr) { |
736 | HUnlock(dnr_handle); |
737 | DisposeHandle(dnr_handle); |
738 | return err; |
739 | } |
740 | |
741 | mactcp.dnr_handle = dnr_handle; |
742 | return noErr; |
743 | } |
744 | |
745 | OSErr CloseResolver(void) |
746 | { |
747 | Handle dnr_handle = mactcp.dnr_handle; |
748 | OSErr err; |
749 | |
750 | if (mactcp.dnr_handle == NULL) |
751 | return notOpenErr; |
752 | |
753 | err = InvokeCloseResolverUPP(CLOSERESOLVER, |
754 | (CloseResolverUPP)*mactcp.dnr_handle); |
755 | if (err != noErr) |
756 | return err; |
757 | |
758 | mactcp.dnr_handle = NULL; |
759 | HUnlock(dnr_handle); |
760 | DisposeHandle(dnr_handle); |
761 | return noErr; |
762 | } |
763 | |
0c4b7799 |
764 | /* MacTCP doesn't have a services database. */ |
765 | int net_service_lookup(char *service) |
766 | { |
767 | |
768 | return 0; |
769 | } |
770 | |
771 | |
193194e2 |
772 | /* |
773 | * Local Variables: |
774 | * c-file-style: "simon" |
775 | * End: |
776 | */ |