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