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 | |
77642124 |
145 | /* TCP connection states, mysteriously missing from <MacTCP.h> */ |
146 | #define TCPS_CLOSED 0 |
147 | #define TCPS_LISTEN 2 |
148 | #define TCPS_SYN_RECEIVED 4 |
149 | #define TCPS_SYN_SENT 6 |
150 | #define TCPS_ESTABLISHED 8 |
151 | #define TCPS_FIN_WAIT_1 10 |
152 | #define TCPS_FIN_WAIT_2 12 |
153 | #define TCPS_CLOSE_WAIT 14 |
154 | #define TCPS_CLOSING 16 |
155 | #define TCPS_LAST_ACK 18 |
156 | #define TCPS_TIME_WAIT 20 |
157 | |
193194e2 |
158 | struct Socket_tag { |
159 | struct socket_function_table *fn; |
160 | /* the above variable absolutely *must* be the first in this structure */ |
2beb0fb0 |
161 | StreamPtr s; |
162 | OSErr err; |
163 | Plug plug; |
164 | void *private_ptr; |
165 | bufchain output_data; |
166 | int connected; |
167 | int writable; |
168 | int frozen; /* this causes readability notifications to be ignored */ |
169 | int frozen_readable; /* this means we missed at least one readability |
170 | * notification while we were frozen */ |
171 | int localhost_only; /* for listening sockets */ |
172 | char oobdata[1]; |
173 | int sending_oob; |
174 | int oobpending; /* is there OOB data available to read? */ |
175 | int oobinline; |
176 | int pending_error; /* in case send() returns error */ |
177 | int listener; |
d25f9823 |
178 | struct Socket_tag *next; |
179 | struct Socket_tag **prev; |
193194e2 |
180 | }; |
181 | |
182 | /* |
183 | * We used to typedef struct Socket_tag *Socket. |
184 | * |
185 | * Since we have made the networking abstraction slightly more |
186 | * abstract, Socket no longer means a tcp socket (it could mean |
187 | * an ssl socket). So now we must use Actual_Socket when we know |
188 | * we are talking about a tcp socket. |
189 | */ |
190 | typedef struct Socket_tag *Actual_Socket; |
191 | |
192 | struct SockAddr_tag { |
193 | int resolved; |
194 | struct hostInfo hostinfo; |
195 | char hostname[512]; |
196 | }; |
197 | |
198 | /* Global variables */ |
199 | static struct { |
200 | Handle dnr_handle; |
201 | int initialised; |
202 | short refnum; |
5221f554 |
203 | ProcessSerialNumber self; |
d25f9823 |
204 | Actual_Socket socklist; |
193194e2 |
205 | } mactcp; |
206 | |
207 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie); |
5221f554 |
208 | static pascal void mactcp_asr(StreamPtr, unsigned short, Ptr, unsigned short, |
209 | struct ICMPReport *); |
2beb0fb0 |
210 | static Plug mactcp_plug(Socket, Plug); |
211 | static void mactcp_flush(Socket); |
212 | static void mactcp_close(Socket); |
9b57f6ea |
213 | static int mactcp_write(Socket, char const *, int); |
214 | static int mactcp_write_oob(Socket, char const*, int); |
2beb0fb0 |
215 | static void mactcp_set_private_ptr(Socket, void *); |
216 | static void *mactcp_get_private_ptr(Socket); |
217 | static char *mactcp_socket_error(Socket); |
218 | static void mactcp_set_frozen(Socket, int); |
193194e2 |
219 | |
d25f9823 |
220 | static void mactcp_recv(Actual_Socket s, size_t len); |
221 | |
193194e2 |
222 | /* |
223 | * Initialise MacTCP. |
224 | * This should be called once before any TCP connection is opened. |
225 | */ |
226 | |
227 | OSErr mactcp_init(void) |
228 | { |
229 | OSErr err; |
230 | |
231 | /* |
232 | * IM:Devices describes a convoluted way of finding a spare unit |
233 | * number to open a driver on before calling OpenDriver. Happily, |
2beb0fb0 |
234 | * the MacTCP INIT ensures that .IPP is already open (and hence |
235 | * has a valid unit number already) so we don't need to go through |
236 | * all that. (MacTCP Programmer's Guide p6) |
193194e2 |
237 | */ |
238 | err = OpenDriver("\p.IPP", &mactcp.refnum); |
239 | if (err != noErr) return err; |
240 | err = OpenResolver(NULL); |
241 | if (err != noErr) return err; |
242 | |
243 | mactcp.initialised = TRUE; |
244 | return noErr; |
245 | } |
246 | |
27a3458f |
247 | void mactcp_cleanup(void) |
193194e2 |
248 | { |
90588fc6 |
249 | Actual_Socket s, next; |
193194e2 |
250 | |
90588fc6 |
251 | /* |
252 | * Eventually, PuTTY should close down each session as it exits, |
253 | * so there should be no sockets left when we get here. Still, |
254 | * better safe than sorry. |
255 | * |
256 | * XXX What about in-flight aync I/O (when we support that)? |
257 | */ |
258 | for (s = mactcp.socklist; s != NULL; s = next) { |
259 | next = s->next; /* s is about to vanish */ |
260 | mactcp_close(&s->fn); |
261 | } |
262 | |
263 | /* |
264 | * When we get async DNS, we have to wait for any outstanding |
265 | * requests to complete here before exiting. |
266 | */ |
193194e2 |
267 | CloseResolver(); |
268 | mactcp.initialised = FALSE; |
269 | } |
270 | |
271 | static ResultUPP mactcp_lookupdone_upp; |
272 | |
2e96d504 |
273 | SockAddr mactcp_namelookup(char const *host, char **canonicalname) |
193194e2 |
274 | { |
275 | SockAddr ret = smalloc(sizeof(struct SockAddr_tag)); |
276 | OSErr err; |
277 | volatile int done = FALSE; |
278 | char *realhost; |
279 | |
280 | /* Clear the structure. */ |
281 | memset(ret, 0, sizeof(struct SockAddr_tag)); |
282 | if (mactcp_lookupdone_upp == NULL) |
283 | mactcp_lookupdone_upp = NewResultUPP(&mactcp_lookupdone); |
2e96d504 |
284 | /* Casting away const -- hope StrToAddr is sensible */ |
285 | err = StrToAddr((char *)host, &ret->hostinfo, mactcp_lookupdone_upp, |
193194e2 |
286 | (char *)&done); |
287 | /* |
288 | * PuTTY expects DNS lookups to be synchronous (see bug |
289 | * "async-dns"), so we pretend they are. |
290 | */ |
291 | if (err == cacheFault) |
292 | while (!done) |
293 | continue; |
294 | ret->resolved = TRUE; |
295 | |
296 | if (ret->hostinfo.rtnCode == noErr) |
297 | realhost = ret->hostinfo.cname; |
298 | else |
299 | realhost = ""; |
300 | *canonicalname = smalloc(1+strlen(realhost)); |
301 | strcpy(*canonicalname, realhost); |
302 | return ret; |
303 | } |
304 | |
305 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie) |
306 | { |
307 | volatile int *donep = (int *)cookie; |
308 | |
309 | *donep = TRUE; |
310 | } |
311 | |
2e96d504 |
312 | SockAddr mactcp_nonamelookup(char const *host) |
193194e2 |
313 | { |
314 | SockAddr ret = smalloc(sizeof(struct SockAddr_tag)); |
315 | |
316 | ret->resolved = FALSE; |
317 | ret->hostinfo.rtnCode = noErr; |
318 | ret->hostname[0] = '\0'; |
319 | strncat(ret->hostname, host, lenof(ret->hostname) - 1); |
320 | return ret; |
321 | } |
322 | |
deed9e25 |
323 | void mactcp_getaddr(SockAddr addr, char *buf, int buflen) |
193194e2 |
324 | { |
325 | char mybuf[16]; |
326 | OSErr err; |
327 | |
d25f9823 |
328 | if (addr->resolved) { |
329 | /* XXX only return first address */ |
330 | err = AddrToStr(addr->hostinfo.addr[0], mybuf); |
331 | buf[0] = '\0'; |
332 | if (err != noErr) |
333 | strncat(buf, mybuf, buflen - 1); |
334 | } else { |
335 | buf[0] = '\0'; |
336 | strncat(buf, addr->hostname, buflen - 1); |
337 | } |
193194e2 |
338 | } |
339 | |
340 | /* I think "local" here really means "loopback" */ |
341 | |
deed9e25 |
342 | int mactcp_hostname_is_local(char *name) |
193194e2 |
343 | { |
344 | |
345 | return !strcmp(name, "localhost"); |
346 | } |
347 | |
deed9e25 |
348 | int mactcp_address_is_local(SockAddr addr) |
193194e2 |
349 | { |
350 | int i; |
351 | |
352 | if (addr->resolved) |
353 | for (i = 0; i < NUM_ALT_ADDRS; i++) |
354 | if (addr->hostinfo.addr[i] & 0xff000000 == 0x7f000000) |
355 | return TRUE; |
356 | return FALSE; |
357 | } |
358 | |
deed9e25 |
359 | int mactcp_addrtype(SockAddr addr) |
193194e2 |
360 | { |
361 | |
362 | if (addr->resolved) |
363 | return ADDRTYPE_IPV4; |
364 | return ADDRTYPE_NAME; |
365 | } |
366 | |
deed9e25 |
367 | void mactcp_addrcopy(SockAddr addr, char *buf) |
193194e2 |
368 | { |
369 | |
370 | /* XXX only return first address */ |
371 | memcpy(buf, &addr->hostinfo.addr[0], 4); |
372 | } |
373 | |
deed9e25 |
374 | void mactcp_addr_free(SockAddr addr) |
193194e2 |
375 | { |
376 | |
377 | sfree(addr); |
378 | } |
379 | |
2beb0fb0 |
380 | static Plug mactcp_plug(Socket sock, Plug p) |
381 | { |
382 | Actual_Socket s = (Actual_Socket) sock; |
383 | Plug ret = s->plug; |
384 | |
385 | if (p) |
386 | s->plug = p; |
387 | return ret; |
388 | } |
389 | |
390 | static void mactcp_flush(Socket s) |
391 | { |
392 | |
deed9e25 |
393 | fatalbox("mactcp_flush"); |
2beb0fb0 |
394 | } |
395 | |
deed9e25 |
396 | Socket mactcp_register(void *sock, Plug plug) |
0c4b7799 |
397 | { |
398 | |
deed9e25 |
399 | fatalbox("mactcp_register"); |
0c4b7799 |
400 | } |
401 | |
5221f554 |
402 | static TCPNotifyUPP mactcp_asr_upp; |
403 | |
deed9e25 |
404 | Socket mactcp_new(SockAddr addr, int port, int privport, int oobinline, |
193194e2 |
405 | int nodelay, Plug plug) |
406 | { |
2beb0fb0 |
407 | static struct socket_function_table fn_table = { |
408 | mactcp_plug, |
409 | mactcp_close, |
410 | mactcp_write, |
411 | mactcp_write_oob, |
412 | mactcp_flush, |
413 | mactcp_set_private_ptr, |
414 | mactcp_get_private_ptr, |
415 | mactcp_set_frozen, |
416 | mactcp_socket_error |
417 | }; |
418 | TCPiopb pb; |
419 | UDPiopb upb; |
420 | Actual_Socket ret; |
421 | ip_addr dstaddr; |
422 | size_t buflen; |
423 | |
2beb0fb0 |
424 | /* |
425 | * Create Socket structure. |
426 | */ |
427 | ret = smalloc(sizeof(struct Socket_tag)); |
428 | ret->s = 0; |
429 | ret->fn = &fn_table; |
430 | ret->err = noErr; |
431 | ret->plug = plug; |
432 | bufchain_init(&ret->output_data); |
433 | ret->connected = 0; /* to start with */ |
434 | ret->writable = 0; /* to start with */ |
435 | ret->sending_oob = 0; |
436 | ret->frozen = 0; |
437 | ret->frozen_readable = 0; |
438 | ret->localhost_only = 0; /* unused, but best init anyway */ |
439 | ret->pending_error = 0; |
d25f9823 |
440 | ret->oobinline = oobinline; |
2beb0fb0 |
441 | ret->oobpending = FALSE; |
442 | ret->listener = 0; |
443 | |
444 | dstaddr = addr->hostinfo.addr[0]; /* XXX should try all of them */ |
445 | /* |
446 | * Create a TCP stream. |
447 | * |
448 | * MacTCP requires us to provide it with some buffer memory. Page |
449 | * 31 of the Programmer's Guide says it should be a minimum of |
450 | * 4*MTU+1024. Page 36 says a minimum of 4096 bytes. Assume |
451 | * they're both correct. |
452 | */ |
453 | assert(addr->resolved); |
454 | upb.ioCRefNum = mactcp.refnum; |
455 | upb.csCode = UDPMaxMTUSize; |
456 | upb.csParam.mtu.remoteHost = dstaddr; |
457 | upb.csParam.mtu.userDataPtr = NULL; |
458 | ret->err = PBControlSync((ParmBlkPtr)&upb); |
2beb0fb0 |
459 | if (ret->err != noErr) return (Socket)ret; |
2beb0fb0 |
460 | |
461 | buflen = upb.csParam.mtu.mtuSize * 4 + 1024; |
462 | if (buflen < 4096) buflen = 4096; |
5221f554 |
463 | if (mactcp_asr_upp == NULL) |
464 | mactcp_asr_upp = NewTCPNotifyUPP(&mactcp_asr); |
465 | GetCurrentProcess(&mactcp.self); |
2beb0fb0 |
466 | pb.ioCRefNum = mactcp.refnum; |
467 | pb.csCode = TCPCreate; |
468 | pb.csParam.create.rcvBuff = smalloc(buflen); |
469 | pb.csParam.create.rcvBuffLen = buflen; |
5221f554 |
470 | pb.csParam.create.notifyProc = mactcp_asr_upp; |
2beb0fb0 |
471 | pb.csParam.create.userDataPtr = (Ptr)ret; |
472 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
473 | if (ret->err != noErr) return (Socket)ret; |
474 | ret->s = pb.tcpStream; |
2beb0fb0 |
475 | |
476 | /* |
477 | * Open the connection. |
478 | */ |
479 | pb.ioCRefNum = mactcp.refnum; |
480 | pb.csCode = TCPActiveOpen; |
481 | pb.tcpStream = ret->s; |
482 | pb.csParam.open.validityFlags = 0; |
483 | pb.csParam.open.remoteHost = dstaddr; |
484 | pb.csParam.open.remotePort = port; |
485 | pb.csParam.open.localPort = privport ? 1023 : 0; |
486 | pb.csParam.open.dontFrag = FALSE; |
487 | pb.csParam.open.timeToLive = 0; |
488 | pb.csParam.open.security = 0; |
489 | pb.csParam.open.optionCnt = 0; |
490 | pb.csParam.open.userDataPtr = (Ptr)ret; |
491 | while (1) { |
492 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
493 | if (!privport || ret->err != duplicateSocket) |
494 | break; |
495 | pb.csParam.open.localPort--; |
496 | if (pb.csParam.open.localPort == 0) |
497 | break; |
498 | } |
499 | |
500 | if (ret->err != noErr) return (Socket)ret; |
501 | |
502 | ret->connected = TRUE; |
503 | ret->writable = TRUE; |
504 | |
d25f9823 |
505 | /* Add this to the list of all sockets */ |
506 | ret->next = mactcp.socklist; |
507 | ret->prev = &mactcp.socklist; |
b89053c0 |
508 | if (ret->next != NULL) |
509 | ret->next->prev = &ret->next; |
d25f9823 |
510 | mactcp.socklist = ret; |
511 | |
2beb0fb0 |
512 | return (Socket)ret; |
513 | } |
514 | |
deed9e25 |
515 | Socket mactcp_newlistener(char *srcaddr, int port, Plug plug, |
516 | int local_host_only) |
0c4b7799 |
517 | { |
518 | |
deed9e25 |
519 | fatalbox("mactcp_newlistener"); |
0c4b7799 |
520 | } |
521 | |
2beb0fb0 |
522 | static void mactcp_close(Socket sock) |
523 | { |
524 | Actual_Socket s = (Actual_Socket)sock; |
525 | TCPiopb pb; |
526 | |
527 | /* |
528 | * TCPClose is equivalent to shutdown(fd, SHUT_WR), and hence |
529 | * leaves the Rx side open, while TCPAbort seems rather vicious, |
530 | * throwing away Tx data that haven't been ACKed yet. We do both |
531 | * in succession. |
532 | */ |
533 | pb.ioCRefNum = mactcp.refnum; |
534 | pb.csCode = TCPClose; |
535 | pb.tcpStream = s->s; |
536 | pb.csParam.close.validityFlags = 0; |
537 | pb.csParam.close.userDataPtr = (Ptr)s; |
538 | s->err = PBControlSync((ParmBlkPtr)&pb); |
539 | /* Not much we can do about an error anyway. */ |
540 | |
541 | pb.ioCRefNum = mactcp.refnum; |
542 | pb.csCode = TCPAbort; |
543 | pb.tcpStream = s->s; |
544 | pb.csParam.abort.userDataPtr = (Ptr)s; |
545 | s->err = PBControlSync((ParmBlkPtr)&pb); |
546 | /* Even less we can do about an error here. */ |
547 | |
548 | pb.ioCRefNum = mactcp.refnum; |
549 | pb.csCode = TCPRelease; |
550 | pb.tcpStream = s->s; |
551 | pb.csParam.create.userDataPtr = (Ptr)s; |
552 | s->err = PBControlSync((ParmBlkPtr)&pb); |
553 | if (s->err == noErr) |
554 | sfree(pb.csParam.create.rcvBuff); |
d25f9823 |
555 | |
556 | /* Unhitch from list of sockets */ |
557 | *s->prev = s->next; |
558 | if (s->next != NULL) |
559 | s->next->prev = s->prev; |
560 | |
2beb0fb0 |
561 | sfree(s); |
562 | } |
563 | |
9b57f6ea |
564 | static int mactcp_write(Socket sock, char const *buf, int len) |
2beb0fb0 |
565 | { |
566 | Actual_Socket s = (Actual_Socket) sock; |
567 | wdsEntry wds[2]; |
568 | TCPiopb pb; |
569 | |
9b57f6ea |
570 | /* |
571 | * Casting away const from buf should be safe -- MacTCP won't |
572 | * write to it. |
573 | */ |
2beb0fb0 |
574 | wds[0].length = len; |
9b57f6ea |
575 | wds[0].ptr = (char *)buf; |
2beb0fb0 |
576 | wds[1].length = 0; |
577 | |
578 | pb.ioCRefNum = mactcp.refnum; |
579 | pb.csCode = TCPSend; |
580 | pb.tcpStream = s->s; |
581 | pb.csParam.send.validityFlags = 0; |
582 | pb.csParam.send.pushFlag = TRUE; /* XXX we want it to return. */ |
583 | pb.csParam.send.urgentFlag = 0; |
584 | pb.csParam.send.wdsPtr = (Ptr)wds; |
585 | pb.csParam.send.userDataPtr = (Ptr)s; |
586 | s->err = PBControlSync((ParmBlkPtr)&pb); |
587 | return 0; |
588 | } |
589 | |
9b57f6ea |
590 | static int mactcp_write_oob(Socket sock, char const *buf, int len) |
2beb0fb0 |
591 | { |
592 | |
593 | fatalbox("mactcp_write_oob"); |
594 | } |
595 | |
5221f554 |
596 | static pascal void mactcp_asr(StreamPtr str, unsigned short event, Ptr cookie, |
597 | unsigned short termin_reason, |
598 | struct ICMPReport *icmp) |
599 | { |
600 | |
601 | WakeUpProcess(&mactcp.self); |
602 | } |
603 | |
2beb0fb0 |
604 | /* |
d25f9823 |
605 | * Called from our event loop if there's work to do. |
606 | */ |
607 | void mactcp_poll(void) |
608 | { |
5320c492 |
609 | Actual_Socket s, next; |
d25f9823 |
610 | TCPiopb pb; |
611 | |
5320c492 |
612 | for (s = mactcp.socklist; s != NULL; s = next) { |
613 | next = s->next; |
90588fc6 |
614 | do { |
615 | pb.ioCRefNum = mactcp.refnum; |
616 | pb.csCode = TCPStatus; |
617 | pb.tcpStream = s->s; |
618 | pb.csParam.status.userDataPtr = (Ptr)s; |
619 | s->err = PBControlSync((ParmBlkPtr)&pb); |
620 | if (s->err != noErr) |
621 | goto next_socket; |
622 | if (pb.csParam.status.amtUnreadData == 0) |
623 | break; |
d25f9823 |
624 | mactcp_recv(s, pb.csParam.status.amtUnreadData); |
90588fc6 |
625 | } while (TRUE); |
77642124 |
626 | switch (pb.csParam.status.connectionState) { |
627 | case TCPS_CLOSE_WAIT: |
628 | /* Remote end has sent us a FIN */ |
629 | plug_closing(s->plug, NULL, 0, 0); |
630 | } |
90588fc6 |
631 | next_socket: |
632 | ; |
d25f9823 |
633 | } |
634 | } |
635 | |
636 | static void mactcp_recv(Actual_Socket s, size_t len) |
637 | { |
638 | rdsEntry rds[2]; |
639 | TCPiopb pb; |
640 | |
641 | if (s->frozen) return; |
642 | |
643 | while (len > 0) { |
644 | pb.ioCRefNum = mactcp.refnum; |
645 | pb.csCode = TCPNoCopyRcv; |
646 | pb.tcpStream = s->s; |
647 | pb.csParam.receive.commandTimeoutValue = 0; |
648 | pb.csParam.receive.rdsPtr = (Ptr)rds; |
649 | pb.csParam.receive.rdsLength = lenof(rds) - 1; |
650 | pb.csParam.receive.userDataPtr = (Ptr)s; |
651 | s->err = PBControlSync((ParmBlkPtr)&pb); |
652 | if (s->err != noErr) |
653 | return; |
654 | plug_receive(s->plug, 0, rds[0].ptr, rds[0].length); |
655 | len -= rds[0].length; |
656 | pb.csCode = TCPRcvBfrReturn; |
657 | s->err = PBControlSync((ParmBlkPtr)&pb); |
658 | if (s->err != noErr) |
659 | return; |
660 | } |
661 | } |
662 | |
663 | /* |
2beb0fb0 |
664 | * Each socket abstraction contains a `void *' private field in |
665 | * which the client can keep state. |
666 | */ |
667 | static void mactcp_set_private_ptr(Socket sock, void *ptr) |
668 | { |
669 | Actual_Socket s = (Actual_Socket) sock; |
670 | s->private_ptr = ptr; |
671 | } |
193194e2 |
672 | |
2beb0fb0 |
673 | static void *mactcp_get_private_ptr(Socket sock) |
674 | { |
675 | Actual_Socket s = (Actual_Socket) sock; |
676 | return s->private_ptr; |
193194e2 |
677 | } |
678 | |
679 | /* |
deed9e25 |
680 | * Special error values are returned from mactcp_namelookup and |
681 | * mactcp_new if there's a problem. These functions extract an error |
682 | * message, or return NULL if there's no problem. |
193194e2 |
683 | */ |
deed9e25 |
684 | char *mactcp_addr_error(SockAddr addr) |
193194e2 |
685 | { |
686 | static char buf[64]; |
687 | |
688 | switch (addr->hostinfo.rtnCode) { |
689 | case noErr: |
690 | return NULL; |
691 | case nameSyntaxErr: |
692 | return "Name syntax error"; |
693 | case noNameServer: |
694 | return "No name server found"; |
695 | case authNameErr: |
696 | return "Domain name does not exist"; |
697 | case noAnsErr: |
698 | return "No answer from domain name server"; |
699 | case dnrErr: |
700 | return "Domain name server returned an error"; |
701 | case outOfMemory: |
702 | return "Out of memory"; |
703 | default: |
704 | sprintf(buf, "Unknown DNR error %d", addr->hostinfo.rtnCode); |
705 | return buf; |
706 | } |
707 | } |
708 | |
2beb0fb0 |
709 | static char *mactcp_socket_error(Socket sock) |
710 | { |
711 | static char buf[64]; |
712 | Actual_Socket s = (Actual_Socket) sock; |
713 | |
714 | switch (s->err) { |
715 | case noErr: |
716 | return NULL; |
717 | case insufficientResources: |
718 | return "Insufficient resources to open TCP stream"; |
719 | case duplicateSocket: |
720 | return "Duplicate socket"; |
721 | case openFailed: |
722 | return "Connection failed while opening"; |
723 | default: |
724 | sprintf(buf, "Unknown MacTCP error %d", s->err); |
725 | return buf; |
726 | } |
727 | } |
728 | |
729 | static void mactcp_set_frozen(Socket sock, int is_frozen) |
730 | { |
d25f9823 |
731 | Actual_Socket s = (Actual_Socket) sock; |
2beb0fb0 |
732 | |
d25f9823 |
733 | if (s->frozen == is_frozen) |
734 | return; |
735 | s->frozen = is_frozen; |
2beb0fb0 |
736 | } |
193194e2 |
737 | |
738 | /* |
739 | * Bits below here would usually be in dnr.c, shipped with the MacTCP |
740 | * SDK, but its convenient not to require that, and since we assume |
741 | * System 7 we can actually simplify things a lot. |
742 | */ |
743 | |
744 | static OSErr OpenResolver(char *hosts_file) |
745 | { |
746 | short vrefnum; |
747 | long dirid; |
748 | HParamBlockRec pb; |
749 | Str255 filename; |
750 | OSErr err; |
751 | int fd; |
752 | Handle dnr_handle; |
753 | |
754 | if (mactcp.dnr_handle != NULL) |
755 | return noErr; |
756 | |
757 | err = FindFolder(kOnSystemDisk, kControlPanelFolderType, FALSE, &vrefnum, |
758 | &dirid); |
759 | if (err != noErr) return err; |
760 | |
761 | /* |
762 | * Might be better to use PBCatSearch here, but it's not always |
763 | * available. |
764 | */ |
765 | pb.fileParam.ioCompletion = NULL; |
766 | pb.fileParam.ioNamePtr = filename; |
767 | pb.fileParam.ioVRefNum = vrefnum; |
768 | pb.fileParam.ioFDirIndex = 1; |
769 | pb.fileParam.ioDirID = dirid; |
770 | fd = -1; |
771 | |
2beb0fb0 |
772 | while (PBHGetFInfoSync(&pb) == noErr) { |
193194e2 |
773 | if (pb.fileParam.ioFlFndrInfo.fdType == 'cdev' && |
774 | pb.fileParam.ioFlFndrInfo.fdCreator == 'ztcp') { |
775 | fd = HOpenResFile(vrefnum, dirid, filename, fsRdPerm); |
776 | if (fd == -1) continue; |
777 | dnr_handle = Get1IndResource('dnrp', 1); |
778 | if (dnr_handle != NULL) |
779 | break; |
780 | CloseResFile(fd); |
781 | fd = -1; |
782 | } |
783 | pb.fileParam.ioDirID = dirid; |
784 | pb.fileParam.ioFDirIndex++; |
785 | } |
786 | if (fd == -1) |
787 | return fnfErr; |
788 | |
789 | DetachResource(dnr_handle); |
790 | CloseResFile(fd); |
791 | |
792 | MoveHHi(dnr_handle); |
793 | HLock(dnr_handle); |
794 | |
795 | err = InvokeOpenResolverUPP(OPENRESOLVER, hosts_file, |
796 | (OpenResolverUPP)*dnr_handle); |
797 | if (err != noErr) { |
798 | HUnlock(dnr_handle); |
799 | DisposeHandle(dnr_handle); |
800 | return err; |
801 | } |
802 | |
803 | mactcp.dnr_handle = dnr_handle; |
804 | return noErr; |
805 | } |
806 | |
807 | OSErr CloseResolver(void) |
808 | { |
809 | Handle dnr_handle = mactcp.dnr_handle; |
810 | OSErr err; |
811 | |
812 | if (mactcp.dnr_handle == NULL) |
813 | return notOpenErr; |
814 | |
815 | err = InvokeCloseResolverUPP(CLOSERESOLVER, |
816 | (CloseResolverUPP)*mactcp.dnr_handle); |
817 | if (err != noErr) |
818 | return err; |
819 | |
820 | mactcp.dnr_handle = NULL; |
821 | HUnlock(dnr_handle); |
822 | DisposeHandle(dnr_handle); |
823 | return noErr; |
824 | } |
825 | |
0c4b7799 |
826 | /* MacTCP doesn't have a services database. */ |
827 | int net_service_lookup(char *service) |
828 | { |
829 | |
830 | return 0; |
831 | } |
832 | |
833 | |
193194e2 |
834 | /* |
835 | * Local Variables: |
836 | * c-file-style: "simon" |
837 | * End: |
838 | */ |