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; |
faf57628 |
279 | int realhostlen; |
193194e2 |
280 | |
281 | /* Clear the structure. */ |
282 | memset(ret, 0, sizeof(struct SockAddr_tag)); |
283 | if (mactcp_lookupdone_upp == NULL) |
284 | mactcp_lookupdone_upp = NewResultUPP(&mactcp_lookupdone); |
2e96d504 |
285 | /* Casting away const -- hope StrToAddr is sensible */ |
286 | err = StrToAddr((char *)host, &ret->hostinfo, mactcp_lookupdone_upp, |
193194e2 |
287 | (char *)&done); |
288 | /* |
289 | * PuTTY expects DNS lookups to be synchronous (see bug |
290 | * "async-dns"), so we pretend they are. |
291 | */ |
292 | if (err == cacheFault) |
293 | while (!done) |
294 | continue; |
295 | ret->resolved = TRUE; |
296 | |
faf57628 |
297 | if (ret->hostinfo.rtnCode == noErr) { |
193194e2 |
298 | realhost = ret->hostinfo.cname; |
faf57628 |
299 | /* MacTCP puts trailing dots on canonical names. */ |
300 | realhostlen = strlen(realhost); |
301 | if (realhost[realhostlen - 1] == '.') |
302 | realhost[realhostlen - 1] = '\0'; |
303 | } else |
193194e2 |
304 | realhost = ""; |
305 | *canonicalname = smalloc(1+strlen(realhost)); |
306 | strcpy(*canonicalname, realhost); |
307 | return ret; |
308 | } |
309 | |
310 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie) |
311 | { |
312 | volatile int *donep = (int *)cookie; |
313 | |
314 | *donep = TRUE; |
315 | } |
316 | |
2e96d504 |
317 | SockAddr mactcp_nonamelookup(char const *host) |
193194e2 |
318 | { |
319 | SockAddr ret = smalloc(sizeof(struct SockAddr_tag)); |
320 | |
321 | ret->resolved = FALSE; |
322 | ret->hostinfo.rtnCode = noErr; |
323 | ret->hostname[0] = '\0'; |
324 | strncat(ret->hostname, host, lenof(ret->hostname) - 1); |
325 | return ret; |
326 | } |
327 | |
deed9e25 |
328 | void mactcp_getaddr(SockAddr addr, char *buf, int buflen) |
193194e2 |
329 | { |
330 | char mybuf[16]; |
331 | OSErr err; |
332 | |
d25f9823 |
333 | if (addr->resolved) { |
334 | /* XXX only return first address */ |
335 | err = AddrToStr(addr->hostinfo.addr[0], mybuf); |
336 | buf[0] = '\0'; |
337 | if (err != noErr) |
338 | strncat(buf, mybuf, buflen - 1); |
339 | } else { |
340 | buf[0] = '\0'; |
341 | strncat(buf, addr->hostname, buflen - 1); |
342 | } |
193194e2 |
343 | } |
344 | |
345 | /* I think "local" here really means "loopback" */ |
346 | |
deed9e25 |
347 | int mactcp_hostname_is_local(char *name) |
193194e2 |
348 | { |
349 | |
350 | return !strcmp(name, "localhost"); |
351 | } |
352 | |
deed9e25 |
353 | int mactcp_address_is_local(SockAddr addr) |
193194e2 |
354 | { |
355 | int i; |
356 | |
357 | if (addr->resolved) |
358 | for (i = 0; i < NUM_ALT_ADDRS; i++) |
359 | if (addr->hostinfo.addr[i] & 0xff000000 == 0x7f000000) |
360 | return TRUE; |
361 | return FALSE; |
362 | } |
363 | |
deed9e25 |
364 | int mactcp_addrtype(SockAddr addr) |
193194e2 |
365 | { |
366 | |
367 | if (addr->resolved) |
368 | return ADDRTYPE_IPV4; |
369 | return ADDRTYPE_NAME; |
370 | } |
371 | |
deed9e25 |
372 | void mactcp_addrcopy(SockAddr addr, char *buf) |
193194e2 |
373 | { |
374 | |
375 | /* XXX only return first address */ |
376 | memcpy(buf, &addr->hostinfo.addr[0], 4); |
377 | } |
378 | |
deed9e25 |
379 | void mactcp_addr_free(SockAddr addr) |
193194e2 |
380 | { |
381 | |
382 | sfree(addr); |
383 | } |
384 | |
2beb0fb0 |
385 | static Plug mactcp_plug(Socket sock, Plug p) |
386 | { |
387 | Actual_Socket s = (Actual_Socket) sock; |
388 | Plug ret = s->plug; |
389 | |
390 | if (p) |
391 | s->plug = p; |
392 | return ret; |
393 | } |
394 | |
395 | static void mactcp_flush(Socket s) |
396 | { |
397 | |
deed9e25 |
398 | fatalbox("mactcp_flush"); |
2beb0fb0 |
399 | } |
400 | |
deed9e25 |
401 | Socket mactcp_register(void *sock, Plug plug) |
0c4b7799 |
402 | { |
403 | |
deed9e25 |
404 | fatalbox("mactcp_register"); |
0c4b7799 |
405 | } |
406 | |
5221f554 |
407 | static TCPNotifyUPP mactcp_asr_upp; |
408 | |
deed9e25 |
409 | Socket mactcp_new(SockAddr addr, int port, int privport, int oobinline, |
193194e2 |
410 | int nodelay, Plug plug) |
411 | { |
2beb0fb0 |
412 | static struct socket_function_table fn_table = { |
413 | mactcp_plug, |
414 | mactcp_close, |
415 | mactcp_write, |
416 | mactcp_write_oob, |
417 | mactcp_flush, |
418 | mactcp_set_private_ptr, |
419 | mactcp_get_private_ptr, |
420 | mactcp_set_frozen, |
421 | mactcp_socket_error |
422 | }; |
423 | TCPiopb pb; |
424 | UDPiopb upb; |
425 | Actual_Socket ret; |
426 | ip_addr dstaddr; |
427 | size_t buflen; |
428 | |
2beb0fb0 |
429 | /* |
430 | * Create Socket structure. |
431 | */ |
432 | ret = smalloc(sizeof(struct Socket_tag)); |
433 | ret->s = 0; |
434 | ret->fn = &fn_table; |
435 | ret->err = noErr; |
436 | ret->plug = plug; |
437 | bufchain_init(&ret->output_data); |
438 | ret->connected = 0; /* to start with */ |
439 | ret->writable = 0; /* to start with */ |
440 | ret->sending_oob = 0; |
441 | ret->frozen = 0; |
442 | ret->frozen_readable = 0; |
443 | ret->localhost_only = 0; /* unused, but best init anyway */ |
444 | ret->pending_error = 0; |
d25f9823 |
445 | ret->oobinline = oobinline; |
2beb0fb0 |
446 | ret->oobpending = FALSE; |
447 | ret->listener = 0; |
448 | |
449 | dstaddr = addr->hostinfo.addr[0]; /* XXX should try all of them */ |
450 | /* |
451 | * Create a TCP stream. |
452 | * |
453 | * MacTCP requires us to provide it with some buffer memory. Page |
454 | * 31 of the Programmer's Guide says it should be a minimum of |
455 | * 4*MTU+1024. Page 36 says a minimum of 4096 bytes. Assume |
456 | * they're both correct. |
457 | */ |
458 | assert(addr->resolved); |
459 | upb.ioCRefNum = mactcp.refnum; |
460 | upb.csCode = UDPMaxMTUSize; |
461 | upb.csParam.mtu.remoteHost = dstaddr; |
462 | upb.csParam.mtu.userDataPtr = NULL; |
463 | ret->err = PBControlSync((ParmBlkPtr)&upb); |
2beb0fb0 |
464 | if (ret->err != noErr) return (Socket)ret; |
2beb0fb0 |
465 | |
466 | buflen = upb.csParam.mtu.mtuSize * 4 + 1024; |
467 | if (buflen < 4096) buflen = 4096; |
5221f554 |
468 | if (mactcp_asr_upp == NULL) |
469 | mactcp_asr_upp = NewTCPNotifyUPP(&mactcp_asr); |
470 | GetCurrentProcess(&mactcp.self); |
2beb0fb0 |
471 | pb.ioCRefNum = mactcp.refnum; |
472 | pb.csCode = TCPCreate; |
473 | pb.csParam.create.rcvBuff = smalloc(buflen); |
474 | pb.csParam.create.rcvBuffLen = buflen; |
5221f554 |
475 | pb.csParam.create.notifyProc = mactcp_asr_upp; |
2beb0fb0 |
476 | pb.csParam.create.userDataPtr = (Ptr)ret; |
477 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
478 | if (ret->err != noErr) return (Socket)ret; |
479 | ret->s = pb.tcpStream; |
2beb0fb0 |
480 | |
481 | /* |
482 | * Open the connection. |
483 | */ |
484 | pb.ioCRefNum = mactcp.refnum; |
485 | pb.csCode = TCPActiveOpen; |
486 | pb.tcpStream = ret->s; |
487 | pb.csParam.open.validityFlags = 0; |
488 | pb.csParam.open.remoteHost = dstaddr; |
489 | pb.csParam.open.remotePort = port; |
490 | pb.csParam.open.localPort = privport ? 1023 : 0; |
491 | pb.csParam.open.dontFrag = FALSE; |
492 | pb.csParam.open.timeToLive = 0; |
493 | pb.csParam.open.security = 0; |
494 | pb.csParam.open.optionCnt = 0; |
495 | pb.csParam.open.userDataPtr = (Ptr)ret; |
496 | while (1) { |
497 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
498 | if (!privport || ret->err != duplicateSocket) |
499 | break; |
500 | pb.csParam.open.localPort--; |
501 | if (pb.csParam.open.localPort == 0) |
502 | break; |
503 | } |
504 | |
505 | if (ret->err != noErr) return (Socket)ret; |
506 | |
507 | ret->connected = TRUE; |
508 | ret->writable = TRUE; |
509 | |
d25f9823 |
510 | /* Add this to the list of all sockets */ |
511 | ret->next = mactcp.socklist; |
512 | ret->prev = &mactcp.socklist; |
b89053c0 |
513 | if (ret->next != NULL) |
514 | ret->next->prev = &ret->next; |
d25f9823 |
515 | mactcp.socklist = ret; |
516 | |
2beb0fb0 |
517 | return (Socket)ret; |
518 | } |
519 | |
deed9e25 |
520 | Socket mactcp_newlistener(char *srcaddr, int port, Plug plug, |
521 | int local_host_only) |
0c4b7799 |
522 | { |
523 | |
deed9e25 |
524 | fatalbox("mactcp_newlistener"); |
0c4b7799 |
525 | } |
526 | |
2beb0fb0 |
527 | static void mactcp_close(Socket sock) |
528 | { |
529 | Actual_Socket s = (Actual_Socket)sock; |
530 | TCPiopb pb; |
531 | |
532 | /* |
533 | * TCPClose is equivalent to shutdown(fd, SHUT_WR), and hence |
534 | * leaves the Rx side open, while TCPAbort seems rather vicious, |
535 | * throwing away Tx data that haven't been ACKed yet. We do both |
536 | * in succession. |
537 | */ |
538 | pb.ioCRefNum = mactcp.refnum; |
539 | pb.csCode = TCPClose; |
540 | pb.tcpStream = s->s; |
541 | pb.csParam.close.validityFlags = 0; |
542 | pb.csParam.close.userDataPtr = (Ptr)s; |
543 | s->err = PBControlSync((ParmBlkPtr)&pb); |
544 | /* Not much we can do about an error anyway. */ |
545 | |
546 | pb.ioCRefNum = mactcp.refnum; |
547 | pb.csCode = TCPAbort; |
548 | pb.tcpStream = s->s; |
549 | pb.csParam.abort.userDataPtr = (Ptr)s; |
550 | s->err = PBControlSync((ParmBlkPtr)&pb); |
551 | /* Even less we can do about an error here. */ |
552 | |
553 | pb.ioCRefNum = mactcp.refnum; |
554 | pb.csCode = TCPRelease; |
555 | pb.tcpStream = s->s; |
556 | pb.csParam.create.userDataPtr = (Ptr)s; |
557 | s->err = PBControlSync((ParmBlkPtr)&pb); |
558 | if (s->err == noErr) |
559 | sfree(pb.csParam.create.rcvBuff); |
d25f9823 |
560 | |
561 | /* Unhitch from list of sockets */ |
562 | *s->prev = s->next; |
563 | if (s->next != NULL) |
564 | s->next->prev = s->prev; |
565 | |
2beb0fb0 |
566 | sfree(s); |
567 | } |
568 | |
9b57f6ea |
569 | static int mactcp_write(Socket sock, char const *buf, int len) |
2beb0fb0 |
570 | { |
571 | Actual_Socket s = (Actual_Socket) sock; |
572 | wdsEntry wds[2]; |
573 | TCPiopb pb; |
574 | |
9b57f6ea |
575 | /* |
576 | * Casting away const from buf should be safe -- MacTCP won't |
577 | * write to it. |
578 | */ |
2beb0fb0 |
579 | wds[0].length = len; |
9b57f6ea |
580 | wds[0].ptr = (char *)buf; |
2beb0fb0 |
581 | wds[1].length = 0; |
582 | |
583 | pb.ioCRefNum = mactcp.refnum; |
584 | pb.csCode = TCPSend; |
585 | pb.tcpStream = s->s; |
586 | pb.csParam.send.validityFlags = 0; |
587 | pb.csParam.send.pushFlag = TRUE; /* XXX we want it to return. */ |
588 | pb.csParam.send.urgentFlag = 0; |
589 | pb.csParam.send.wdsPtr = (Ptr)wds; |
590 | pb.csParam.send.userDataPtr = (Ptr)s; |
591 | s->err = PBControlSync((ParmBlkPtr)&pb); |
592 | return 0; |
593 | } |
594 | |
9b57f6ea |
595 | static int mactcp_write_oob(Socket sock, char const *buf, int len) |
2beb0fb0 |
596 | { |
597 | |
598 | fatalbox("mactcp_write_oob"); |
599 | } |
600 | |
5221f554 |
601 | static pascal void mactcp_asr(StreamPtr str, unsigned short event, Ptr cookie, |
602 | unsigned short termin_reason, |
603 | struct ICMPReport *icmp) |
604 | { |
605 | |
606 | WakeUpProcess(&mactcp.self); |
607 | } |
608 | |
2beb0fb0 |
609 | /* |
d25f9823 |
610 | * Called from our event loop if there's work to do. |
611 | */ |
612 | void mactcp_poll(void) |
613 | { |
5320c492 |
614 | Actual_Socket s, next; |
d25f9823 |
615 | TCPiopb pb; |
616 | |
5320c492 |
617 | for (s = mactcp.socklist; s != NULL; s = next) { |
618 | next = s->next; |
90588fc6 |
619 | do { |
620 | pb.ioCRefNum = mactcp.refnum; |
621 | pb.csCode = TCPStatus; |
622 | pb.tcpStream = s->s; |
623 | pb.csParam.status.userDataPtr = (Ptr)s; |
624 | s->err = PBControlSync((ParmBlkPtr)&pb); |
625 | if (s->err != noErr) |
626 | goto next_socket; |
627 | if (pb.csParam.status.amtUnreadData == 0) |
628 | break; |
d25f9823 |
629 | mactcp_recv(s, pb.csParam.status.amtUnreadData); |
90588fc6 |
630 | } while (TRUE); |
77642124 |
631 | switch (pb.csParam.status.connectionState) { |
632 | case TCPS_CLOSE_WAIT: |
633 | /* Remote end has sent us a FIN */ |
634 | plug_closing(s->plug, NULL, 0, 0); |
635 | } |
90588fc6 |
636 | next_socket: |
637 | ; |
d25f9823 |
638 | } |
639 | } |
640 | |
641 | static void mactcp_recv(Actual_Socket s, size_t len) |
642 | { |
643 | rdsEntry rds[2]; |
644 | TCPiopb pb; |
645 | |
646 | if (s->frozen) return; |
647 | |
648 | while (len > 0) { |
649 | pb.ioCRefNum = mactcp.refnum; |
650 | pb.csCode = TCPNoCopyRcv; |
651 | pb.tcpStream = s->s; |
652 | pb.csParam.receive.commandTimeoutValue = 0; |
653 | pb.csParam.receive.rdsPtr = (Ptr)rds; |
654 | pb.csParam.receive.rdsLength = lenof(rds) - 1; |
655 | pb.csParam.receive.userDataPtr = (Ptr)s; |
656 | s->err = PBControlSync((ParmBlkPtr)&pb); |
657 | if (s->err != noErr) |
658 | return; |
659 | plug_receive(s->plug, 0, rds[0].ptr, rds[0].length); |
660 | len -= rds[0].length; |
661 | pb.csCode = TCPRcvBfrReturn; |
662 | s->err = PBControlSync((ParmBlkPtr)&pb); |
663 | if (s->err != noErr) |
664 | return; |
665 | } |
666 | } |
667 | |
668 | /* |
2beb0fb0 |
669 | * Each socket abstraction contains a `void *' private field in |
670 | * which the client can keep state. |
671 | */ |
672 | static void mactcp_set_private_ptr(Socket sock, void *ptr) |
673 | { |
674 | Actual_Socket s = (Actual_Socket) sock; |
675 | s->private_ptr = ptr; |
676 | } |
193194e2 |
677 | |
2beb0fb0 |
678 | static void *mactcp_get_private_ptr(Socket sock) |
679 | { |
680 | Actual_Socket s = (Actual_Socket) sock; |
681 | return s->private_ptr; |
193194e2 |
682 | } |
683 | |
684 | /* |
deed9e25 |
685 | * Special error values are returned from mactcp_namelookup and |
686 | * mactcp_new if there's a problem. These functions extract an error |
687 | * message, or return NULL if there's no problem. |
193194e2 |
688 | */ |
deed9e25 |
689 | char *mactcp_addr_error(SockAddr addr) |
193194e2 |
690 | { |
691 | static char buf[64]; |
692 | |
693 | switch (addr->hostinfo.rtnCode) { |
694 | case noErr: |
695 | return NULL; |
696 | case nameSyntaxErr: |
697 | return "Name syntax error"; |
698 | case noNameServer: |
699 | return "No name server found"; |
700 | case authNameErr: |
701 | return "Domain name does not exist"; |
702 | case noAnsErr: |
703 | return "No answer from domain name server"; |
704 | case dnrErr: |
705 | return "Domain name server returned an error"; |
706 | case outOfMemory: |
707 | return "Out of memory"; |
708 | default: |
709 | sprintf(buf, "Unknown DNR error %d", addr->hostinfo.rtnCode); |
710 | return buf; |
711 | } |
712 | } |
713 | |
2beb0fb0 |
714 | static char *mactcp_socket_error(Socket sock) |
715 | { |
716 | static char buf[64]; |
717 | Actual_Socket s = (Actual_Socket) sock; |
718 | |
719 | switch (s->err) { |
720 | case noErr: |
721 | return NULL; |
722 | case insufficientResources: |
723 | return "Insufficient resources to open TCP stream"; |
724 | case duplicateSocket: |
725 | return "Duplicate socket"; |
726 | case openFailed: |
727 | return "Connection failed while opening"; |
728 | default: |
729 | sprintf(buf, "Unknown MacTCP error %d", s->err); |
730 | return buf; |
731 | } |
732 | } |
733 | |
734 | static void mactcp_set_frozen(Socket sock, int is_frozen) |
735 | { |
d25f9823 |
736 | Actual_Socket s = (Actual_Socket) sock; |
2beb0fb0 |
737 | |
d25f9823 |
738 | if (s->frozen == is_frozen) |
739 | return; |
740 | s->frozen = is_frozen; |
2beb0fb0 |
741 | } |
193194e2 |
742 | |
743 | /* |
744 | * Bits below here would usually be in dnr.c, shipped with the MacTCP |
745 | * SDK, but its convenient not to require that, and since we assume |
746 | * System 7 we can actually simplify things a lot. |
747 | */ |
748 | |
749 | static OSErr OpenResolver(char *hosts_file) |
750 | { |
751 | short vrefnum; |
752 | long dirid; |
753 | HParamBlockRec pb; |
754 | Str255 filename; |
755 | OSErr err; |
756 | int fd; |
757 | Handle dnr_handle; |
758 | |
759 | if (mactcp.dnr_handle != NULL) |
760 | return noErr; |
761 | |
762 | err = FindFolder(kOnSystemDisk, kControlPanelFolderType, FALSE, &vrefnum, |
763 | &dirid); |
764 | if (err != noErr) return err; |
765 | |
766 | /* |
767 | * Might be better to use PBCatSearch here, but it's not always |
768 | * available. |
769 | */ |
770 | pb.fileParam.ioCompletion = NULL; |
771 | pb.fileParam.ioNamePtr = filename; |
772 | pb.fileParam.ioVRefNum = vrefnum; |
773 | pb.fileParam.ioFDirIndex = 1; |
774 | pb.fileParam.ioDirID = dirid; |
775 | fd = -1; |
776 | |
2beb0fb0 |
777 | while (PBHGetFInfoSync(&pb) == noErr) { |
193194e2 |
778 | if (pb.fileParam.ioFlFndrInfo.fdType == 'cdev' && |
779 | pb.fileParam.ioFlFndrInfo.fdCreator == 'ztcp') { |
780 | fd = HOpenResFile(vrefnum, dirid, filename, fsRdPerm); |
781 | if (fd == -1) continue; |
782 | dnr_handle = Get1IndResource('dnrp', 1); |
783 | if (dnr_handle != NULL) |
784 | break; |
785 | CloseResFile(fd); |
786 | fd = -1; |
787 | } |
788 | pb.fileParam.ioDirID = dirid; |
789 | pb.fileParam.ioFDirIndex++; |
790 | } |
791 | if (fd == -1) |
792 | return fnfErr; |
793 | |
794 | DetachResource(dnr_handle); |
795 | CloseResFile(fd); |
796 | |
797 | MoveHHi(dnr_handle); |
798 | HLock(dnr_handle); |
799 | |
800 | err = InvokeOpenResolverUPP(OPENRESOLVER, hosts_file, |
801 | (OpenResolverUPP)*dnr_handle); |
802 | if (err != noErr) { |
803 | HUnlock(dnr_handle); |
804 | DisposeHandle(dnr_handle); |
805 | return err; |
806 | } |
807 | |
808 | mactcp.dnr_handle = dnr_handle; |
809 | return noErr; |
810 | } |
811 | |
812 | OSErr CloseResolver(void) |
813 | { |
814 | Handle dnr_handle = mactcp.dnr_handle; |
815 | OSErr err; |
816 | |
817 | if (mactcp.dnr_handle == NULL) |
818 | return notOpenErr; |
819 | |
820 | err = InvokeCloseResolverUPP(CLOSERESOLVER, |
821 | (CloseResolverUPP)*mactcp.dnr_handle); |
822 | if (err != noErr) |
823 | return err; |
824 | |
825 | mactcp.dnr_handle = NULL; |
826 | HUnlock(dnr_handle); |
827 | DisposeHandle(dnr_handle); |
828 | return noErr; |
829 | } |
830 | |
0c4b7799 |
831 | /* MacTCP doesn't have a services database. */ |
832 | int net_service_lookup(char *service) |
833 | { |
834 | |
835 | return 0; |
836 | } |
837 | |
838 | |
193194e2 |
839 | /* |
840 | * Local Variables: |
841 | * c-file-style: "simon" |
842 | * End: |
843 | */ |