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 | |
b2859f7a |
30 | #if !TARGET_API_MAC_CARBON |
31 | |
193194e2 |
32 | #include <MacTypes.h> |
33 | #include <Devices.h> |
34 | #include <Endian.h> |
35 | #include <Folders.h> |
36 | #include <MacTCP.h> |
37 | #include <MixedMode.h> |
38 | #include <Resources.h> |
39 | |
40 | #include <assert.h> |
41 | |
d25f9823 |
42 | #define DEFINE_PLUG_METHOD_MACROS |
193194e2 |
43 | #include "putty.h" |
44 | #include "network.h" |
45 | #include "mac.h" |
46 | |
47 | /* |
48 | * The following structures are documented as being in |
49 | * <AddressXlation.h>, but that isn't shipped with Universal |
50 | * Interfaces, and it's easier to define them here than to require |
51 | * people to download yet another SDK. |
52 | */ |
53 | |
54 | static OSErr OpenResolver(char *); |
55 | static OSErr CloseResolver(void); |
56 | |
57 | enum { |
58 | OPENRESOLVER = 1, |
59 | CLOSERESOLVER, |
60 | STRTOADDR, |
61 | ADDRTOSTR, |
62 | ENUMCACHE, |
63 | ADDRTONAME, |
64 | HXINFO, |
65 | MXINFO |
66 | }; |
67 | |
68 | #define NUM_ALT_ADDRS 4 |
69 | |
70 | typedef struct hostInfo { |
71 | int rtnCode; |
72 | char cname[255]; |
73 | unsigned long addr[NUM_ALT_ADDRS]; |
74 | }; |
75 | |
76 | typedef CALLBACK_API(void, ResultProcPtr)(struct hostInfo *, char *); |
77 | typedef STACK_UPP_TYPE(ResultProcPtr) ResultUPP; |
78 | enum { uppResultProcInfo = kPascalStackBased |
79 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(struct hostInfo*))) |
80 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char *))) |
81 | }; |
82 | #define NewResultUPP(userRoutine) \ |
83 | (ResultUPP)NewRoutineDescriptor((ProcPtr)(userRoutine), \ |
84 | uppResultProcInfo, \ |
85 | GetCurrentArchitecture()) |
86 | #define DisposeResultUPP(userUPP) DisposeRoutineDescriptor(userUPP) |
87 | |
88 | static OSErr StrToAddr(char *, struct hostInfo *, ResultUPP *, char *); |
89 | |
90 | typedef CALLBACK_API_C(OSErr, OpenResolverProcPtr)(UInt32, char *); |
91 | typedef STACK_UPP_TYPE(OpenResolverProcPtr) OpenResolverUPP; |
92 | enum { uppOpenResolverProcInfo = kCStackBased |
93 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
94 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
95 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char*))) |
96 | }; |
97 | #define InvokeOpenResolverUPP(selector, fileName, userUPP) \ |
98 | CALL_TWO_PARAMETER_UPP((userUPP), uppOpenResolverProcInfo, \ |
99 | (selector), (fileName)) |
100 | |
101 | typedef CALLBACK_API_C(OSErr, CloseResolverProcPtr)(UInt32); |
102 | typedef STACK_UPP_TYPE(CloseResolverProcPtr) CloseResolverUPP; |
103 | enum { uppCloseResolverProcInfo = kCStackBased |
104 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
105 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
106 | }; |
107 | #define InvokeCloseResolverUPP(selector, userUPP) \ |
108 | CALL_ONE_PARAMETER_UPP((userUPP), uppCloseResolverProcInfo, (selector)) |
109 | |
110 | typedef CALLBACK_API_C(OSErr, StrToAddrProcPtr)(UInt32, char *, |
111 | struct hostInfo *, ResultUPP, |
112 | char *); |
113 | typedef STACK_UPP_TYPE(StrToAddrProcPtr) StrToAddrUPP; |
114 | enum { uppStrToAddrProcInfo = kCStackBased |
115 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
116 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
117 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(char *))) |
118 | | STACK_ROUTINE_PARAMETER(3, SIZE_CODE(sizeof(struct hostInfo *))) |
119 | | STACK_ROUTINE_PARAMETER(4, SIZE_CODE(sizeof(ResultUPP))) |
120 | | STACK_ROUTINE_PARAMETER(5, SIZE_CODE(sizeof(char *))) |
121 | }; |
122 | #define InvokeStrToAddrUPP(selector, hostName, hostInfoPtr, ResultProc, \ |
123 | userDataPtr, userUPP) \ |
124 | CALL_FIVE_PARAMETER_UPP((userUPP), uppStrToAddrProcInfo, (selector),\ |
125 | (hostName), (hostInfoPtr), (ResultProc), \ |
126 | (userDataPtr)) |
127 | #define StrToAddr(hostName, hostInfoPtr, ResultProc, userDataPtr) \ |
128 | InvokeStrToAddrUPP(STRTOADDR, hostName, hostInfoPtr, ResultProc, \ |
129 | userDataPtr, (StrToAddrUPP)*mactcp.dnr_handle) |
130 | |
131 | typedef CALLBACK_API_C(OSErr, AddrToStrProcPtr)(UInt32, unsigned long, char *); |
132 | typedef STACK_UPP_TYPE(AddrToStrProcPtr) AddrToStrUPP; |
133 | enum { uppAddrToStrProcInfo = kCStackBased |
134 | | RESULT_SIZE(SIZE_CODE(sizeof(OSErr))) |
1d81a7b6 |
135 | | STACK_ROUTINE_PARAMETER(1, SIZE_CODE(sizeof(UInt32))) |
136 | | STACK_ROUTINE_PARAMETER(2, SIZE_CODE(sizeof(unsigned long))) |
137 | | STACK_ROUTINE_PARAMETER(3, SIZE_CODE(sizeof(char *))) |
193194e2 |
138 | }; |
139 | #define InvokeAddrToStrUPP(selector, addr, addrStr, userUPP) \ |
140 | CALL_THREE_PARAMETER_UPP((userUPP), uppAddrToStrProcInfo, (selector),\ |
141 | (addr), (addrStr)) |
142 | #define AddrToStr(addr, addrStr) \ |
143 | InvokeAddrToStrUPP(ADDRTOSTR, addr, addrStr, \ |
144 | (AddrToStrUPP)*mactcp.dnr_handle) |
145 | |
146 | /* End of AddressXlation.h bits */ |
147 | |
77642124 |
148 | /* TCP connection states, mysteriously missing from <MacTCP.h> */ |
149 | #define TCPS_CLOSED 0 |
150 | #define TCPS_LISTEN 2 |
151 | #define TCPS_SYN_RECEIVED 4 |
152 | #define TCPS_SYN_SENT 6 |
153 | #define TCPS_ESTABLISHED 8 |
154 | #define TCPS_FIN_WAIT_1 10 |
155 | #define TCPS_FIN_WAIT_2 12 |
156 | #define TCPS_CLOSE_WAIT 14 |
157 | #define TCPS_CLOSING 16 |
158 | #define TCPS_LAST_ACK 18 |
159 | #define TCPS_TIME_WAIT 20 |
160 | |
193194e2 |
161 | struct Socket_tag { |
162 | struct socket_function_table *fn; |
163 | /* the above variable absolutely *must* be the first in this structure */ |
2beb0fb0 |
164 | StreamPtr s; |
165 | OSErr err; |
166 | Plug plug; |
167 | void *private_ptr; |
168 | bufchain output_data; |
169 | int connected; |
170 | int writable; |
171 | int frozen; /* this causes readability notifications to be ignored */ |
172 | int frozen_readable; /* this means we missed at least one readability |
173 | * notification while we were frozen */ |
174 | int localhost_only; /* for listening sockets */ |
175 | char oobdata[1]; |
176 | int sending_oob; |
177 | int oobpending; /* is there OOB data available to read? */ |
178 | int oobinline; |
179 | int pending_error; /* in case send() returns error */ |
180 | int listener; |
d25f9823 |
181 | struct Socket_tag *next; |
182 | struct Socket_tag **prev; |
193194e2 |
183 | }; |
184 | |
185 | /* |
186 | * We used to typedef struct Socket_tag *Socket. |
187 | * |
188 | * Since we have made the networking abstraction slightly more |
189 | * abstract, Socket no longer means a tcp socket (it could mean |
190 | * an ssl socket). So now we must use Actual_Socket when we know |
191 | * we are talking about a tcp socket. |
192 | */ |
193 | typedef struct Socket_tag *Actual_Socket; |
194 | |
195 | struct SockAddr_tag { |
196 | int resolved; |
197 | struct hostInfo hostinfo; |
198 | char hostname[512]; |
199 | }; |
200 | |
201 | /* Global variables */ |
202 | static struct { |
203 | Handle dnr_handle; |
204 | int initialised; |
205 | short refnum; |
5221f554 |
206 | ProcessSerialNumber self; |
d25f9823 |
207 | Actual_Socket socklist; |
193194e2 |
208 | } mactcp; |
209 | |
210 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie); |
5221f554 |
211 | static pascal void mactcp_asr(StreamPtr, unsigned short, Ptr, unsigned short, |
212 | struct ICMPReport *); |
2beb0fb0 |
213 | static Plug mactcp_plug(Socket, Plug); |
214 | static void mactcp_flush(Socket); |
215 | static void mactcp_close(Socket); |
9b57f6ea |
216 | static int mactcp_write(Socket, char const *, int); |
217 | static int mactcp_write_oob(Socket, char const*, int); |
2beb0fb0 |
218 | static void mactcp_set_private_ptr(Socket, void *); |
219 | static void *mactcp_get_private_ptr(Socket); |
cbe2d68f |
220 | static const char *mactcp_socket_error(Socket); |
2beb0fb0 |
221 | static void mactcp_set_frozen(Socket, int); |
193194e2 |
222 | |
d25f9823 |
223 | static void mactcp_recv(Actual_Socket s, size_t len); |
224 | |
193194e2 |
225 | /* |
226 | * Initialise MacTCP. |
227 | * This should be called once before any TCP connection is opened. |
228 | */ |
229 | |
230 | OSErr mactcp_init(void) |
231 | { |
232 | OSErr err; |
233 | |
234 | /* |
235 | * IM:Devices describes a convoluted way of finding a spare unit |
236 | * number to open a driver on before calling OpenDriver. Happily, |
2beb0fb0 |
237 | * the MacTCP INIT ensures that .IPP is already open (and hence |
238 | * has a valid unit number already) so we don't need to go through |
239 | * all that. (MacTCP Programmer's Guide p6) |
193194e2 |
240 | */ |
241 | err = OpenDriver("\p.IPP", &mactcp.refnum); |
242 | if (err != noErr) return err; |
243 | err = OpenResolver(NULL); |
244 | if (err != noErr) return err; |
245 | |
246 | mactcp.initialised = TRUE; |
247 | return noErr; |
248 | } |
249 | |
27a3458f |
250 | void mactcp_cleanup(void) |
193194e2 |
251 | { |
90588fc6 |
252 | Actual_Socket s, next; |
193194e2 |
253 | |
90588fc6 |
254 | /* |
255 | * Eventually, PuTTY should close down each session as it exits, |
256 | * so there should be no sockets left when we get here. Still, |
257 | * better safe than sorry. |
258 | * |
259 | * XXX What about in-flight aync I/O (when we support that)? |
260 | */ |
261 | for (s = mactcp.socklist; s != NULL; s = next) { |
262 | next = s->next; /* s is about to vanish */ |
263 | mactcp_close(&s->fn); |
264 | } |
265 | |
266 | /* |
267 | * When we get async DNS, we have to wait for any outstanding |
268 | * requests to complete here before exiting. |
269 | */ |
193194e2 |
270 | CloseResolver(); |
271 | mactcp.initialised = FALSE; |
272 | } |
273 | |
274 | static ResultUPP mactcp_lookupdone_upp; |
275 | |
2e96d504 |
276 | SockAddr mactcp_namelookup(char const *host, char **canonicalname) |
193194e2 |
277 | { |
34773273 |
278 | SockAddr ret = snew(struct SockAddr_tag); |
193194e2 |
279 | OSErr err; |
280 | volatile int done = FALSE; |
281 | char *realhost; |
faf57628 |
282 | int realhostlen; |
193194e2 |
283 | |
284 | /* Clear the structure. */ |
285 | memset(ret, 0, sizeof(struct SockAddr_tag)); |
286 | if (mactcp_lookupdone_upp == NULL) |
287 | mactcp_lookupdone_upp = NewResultUPP(&mactcp_lookupdone); |
2e96d504 |
288 | /* Casting away const -- hope StrToAddr is sensible */ |
289 | err = StrToAddr((char *)host, &ret->hostinfo, mactcp_lookupdone_upp, |
193194e2 |
290 | (char *)&done); |
291 | /* |
292 | * PuTTY expects DNS lookups to be synchronous (see bug |
293 | * "async-dns"), so we pretend they are. |
294 | */ |
295 | if (err == cacheFault) |
296 | while (!done) |
297 | continue; |
298 | ret->resolved = TRUE; |
299 | |
faf57628 |
300 | if (ret->hostinfo.rtnCode == noErr) { |
193194e2 |
301 | realhost = ret->hostinfo.cname; |
faf57628 |
302 | /* MacTCP puts trailing dots on canonical names. */ |
303 | realhostlen = strlen(realhost); |
304 | if (realhost[realhostlen - 1] == '.') |
305 | realhost[realhostlen - 1] = '\0'; |
306 | } else |
193194e2 |
307 | realhost = ""; |
34773273 |
308 | *canonicalname = snewn(1 + strlen(realhost), char); |
193194e2 |
309 | strcpy(*canonicalname, realhost); |
310 | return ret; |
311 | } |
312 | |
313 | static pascal void mactcp_lookupdone(struct hostInfo *hi, char *cookie) |
314 | { |
315 | volatile int *donep = (int *)cookie; |
316 | |
317 | *donep = TRUE; |
318 | } |
319 | |
2e96d504 |
320 | SockAddr mactcp_nonamelookup(char const *host) |
193194e2 |
321 | { |
34773273 |
322 | SockAddr ret = snew(struct SockAddr_tag); |
193194e2 |
323 | |
324 | ret->resolved = FALSE; |
325 | ret->hostinfo.rtnCode = noErr; |
326 | ret->hostname[0] = '\0'; |
327 | strncat(ret->hostname, host, lenof(ret->hostname) - 1); |
328 | return ret; |
329 | } |
330 | |
deed9e25 |
331 | void mactcp_getaddr(SockAddr addr, char *buf, int buflen) |
193194e2 |
332 | { |
333 | char mybuf[16]; |
334 | OSErr err; |
335 | |
d25f9823 |
336 | if (addr->resolved) { |
337 | /* XXX only return first address */ |
338 | err = AddrToStr(addr->hostinfo.addr[0], mybuf); |
339 | buf[0] = '\0'; |
340 | if (err != noErr) |
341 | strncat(buf, mybuf, buflen - 1); |
342 | } else { |
343 | buf[0] = '\0'; |
344 | strncat(buf, addr->hostname, buflen - 1); |
345 | } |
193194e2 |
346 | } |
347 | |
348 | /* I think "local" here really means "loopback" */ |
349 | |
deed9e25 |
350 | int mactcp_hostname_is_local(char *name) |
193194e2 |
351 | { |
352 | |
353 | return !strcmp(name, "localhost"); |
354 | } |
355 | |
deed9e25 |
356 | int mactcp_address_is_local(SockAddr addr) |
193194e2 |
357 | { |
358 | int i; |
359 | |
360 | if (addr->resolved) |
361 | for (i = 0; i < NUM_ALT_ADDRS; i++) |
362 | if (addr->hostinfo.addr[i] & 0xff000000 == 0x7f000000) |
363 | return TRUE; |
364 | return FALSE; |
365 | } |
366 | |
deed9e25 |
367 | int mactcp_addrtype(SockAddr addr) |
193194e2 |
368 | { |
369 | |
370 | if (addr->resolved) |
371 | return ADDRTYPE_IPV4; |
372 | return ADDRTYPE_NAME; |
373 | } |
374 | |
deed9e25 |
375 | void mactcp_addrcopy(SockAddr addr, char *buf) |
193194e2 |
376 | { |
377 | |
378 | /* XXX only return first address */ |
379 | memcpy(buf, &addr->hostinfo.addr[0], 4); |
380 | } |
381 | |
deed9e25 |
382 | void mactcp_addr_free(SockAddr addr) |
193194e2 |
383 | { |
384 | |
385 | sfree(addr); |
386 | } |
387 | |
2beb0fb0 |
388 | static Plug mactcp_plug(Socket sock, Plug p) |
389 | { |
390 | Actual_Socket s = (Actual_Socket) sock; |
391 | Plug ret = s->plug; |
392 | |
393 | if (p) |
394 | s->plug = p; |
395 | return ret; |
396 | } |
397 | |
398 | static void mactcp_flush(Socket s) |
399 | { |
400 | |
deed9e25 |
401 | fatalbox("mactcp_flush"); |
2beb0fb0 |
402 | } |
403 | |
deed9e25 |
404 | Socket mactcp_register(void *sock, Plug plug) |
0c4b7799 |
405 | { |
406 | |
deed9e25 |
407 | fatalbox("mactcp_register"); |
0c4b7799 |
408 | } |
409 | |
5221f554 |
410 | static TCPNotifyUPP mactcp_asr_upp; |
411 | |
deed9e25 |
412 | Socket mactcp_new(SockAddr addr, int port, int privport, int oobinline, |
79bf227b |
413 | int nodelay, int keepalive, Plug plug) |
193194e2 |
414 | { |
2beb0fb0 |
415 | static struct socket_function_table fn_table = { |
416 | mactcp_plug, |
417 | mactcp_close, |
418 | mactcp_write, |
419 | mactcp_write_oob, |
420 | mactcp_flush, |
421 | mactcp_set_private_ptr, |
422 | mactcp_get_private_ptr, |
423 | mactcp_set_frozen, |
424 | mactcp_socket_error |
425 | }; |
426 | TCPiopb pb; |
427 | UDPiopb upb; |
428 | Actual_Socket ret; |
429 | ip_addr dstaddr; |
430 | size_t buflen; |
431 | |
2beb0fb0 |
432 | /* |
433 | * Create Socket structure. |
434 | */ |
34773273 |
435 | ret = snew(struct Socket_tag); |
2beb0fb0 |
436 | ret->s = 0; |
437 | ret->fn = &fn_table; |
438 | ret->err = noErr; |
439 | ret->plug = plug; |
440 | bufchain_init(&ret->output_data); |
441 | ret->connected = 0; /* to start with */ |
442 | ret->writable = 0; /* to start with */ |
443 | ret->sending_oob = 0; |
444 | ret->frozen = 0; |
445 | ret->frozen_readable = 0; |
446 | ret->localhost_only = 0; /* unused, but best init anyway */ |
447 | ret->pending_error = 0; |
d25f9823 |
448 | ret->oobinline = oobinline; |
2beb0fb0 |
449 | ret->oobpending = FALSE; |
450 | ret->listener = 0; |
451 | |
452 | dstaddr = addr->hostinfo.addr[0]; /* XXX should try all of them */ |
453 | /* |
454 | * Create a TCP stream. |
455 | * |
456 | * MacTCP requires us to provide it with some buffer memory. Page |
457 | * 31 of the Programmer's Guide says it should be a minimum of |
458 | * 4*MTU+1024. Page 36 says a minimum of 4096 bytes. Assume |
459 | * they're both correct. |
460 | */ |
461 | assert(addr->resolved); |
462 | upb.ioCRefNum = mactcp.refnum; |
463 | upb.csCode = UDPMaxMTUSize; |
464 | upb.csParam.mtu.remoteHost = dstaddr; |
465 | upb.csParam.mtu.userDataPtr = NULL; |
466 | ret->err = PBControlSync((ParmBlkPtr)&upb); |
2beb0fb0 |
467 | if (ret->err != noErr) return (Socket)ret; |
2beb0fb0 |
468 | |
469 | buflen = upb.csParam.mtu.mtuSize * 4 + 1024; |
470 | if (buflen < 4096) buflen = 4096; |
5221f554 |
471 | if (mactcp_asr_upp == NULL) |
472 | mactcp_asr_upp = NewTCPNotifyUPP(&mactcp_asr); |
473 | GetCurrentProcess(&mactcp.self); |
2beb0fb0 |
474 | pb.ioCRefNum = mactcp.refnum; |
475 | pb.csCode = TCPCreate; |
34773273 |
476 | pb.csParam.create.rcvBuff = snewn(buflen, char); |
2beb0fb0 |
477 | pb.csParam.create.rcvBuffLen = buflen; |
5221f554 |
478 | pb.csParam.create.notifyProc = mactcp_asr_upp; |
2beb0fb0 |
479 | pb.csParam.create.userDataPtr = (Ptr)ret; |
480 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
481 | if (ret->err != noErr) return (Socket)ret; |
482 | ret->s = pb.tcpStream; |
2beb0fb0 |
483 | |
484 | /* |
485 | * Open the connection. |
486 | */ |
487 | pb.ioCRefNum = mactcp.refnum; |
488 | pb.csCode = TCPActiveOpen; |
489 | pb.tcpStream = ret->s; |
490 | pb.csParam.open.validityFlags = 0; |
491 | pb.csParam.open.remoteHost = dstaddr; |
492 | pb.csParam.open.remotePort = port; |
493 | pb.csParam.open.localPort = privport ? 1023 : 0; |
494 | pb.csParam.open.dontFrag = FALSE; |
495 | pb.csParam.open.timeToLive = 0; |
496 | pb.csParam.open.security = 0; |
497 | pb.csParam.open.optionCnt = 0; |
498 | pb.csParam.open.userDataPtr = (Ptr)ret; |
499 | while (1) { |
500 | ret->err = PBControlSync((ParmBlkPtr)&pb); |
501 | if (!privport || ret->err != duplicateSocket) |
502 | break; |
503 | pb.csParam.open.localPort--; |
504 | if (pb.csParam.open.localPort == 0) |
505 | break; |
506 | } |
507 | |
508 | if (ret->err != noErr) return (Socket)ret; |
509 | |
510 | ret->connected = TRUE; |
511 | ret->writable = TRUE; |
512 | |
d25f9823 |
513 | /* Add this to the list of all sockets */ |
514 | ret->next = mactcp.socklist; |
515 | ret->prev = &mactcp.socklist; |
b89053c0 |
516 | if (ret->next != NULL) |
517 | ret->next->prev = &ret->next; |
d25f9823 |
518 | mactcp.socklist = ret; |
519 | |
f85e6f6e |
520 | sk_addr_free(addr); /* don't need this anymore */ |
521 | |
2beb0fb0 |
522 | return (Socket)ret; |
523 | } |
524 | |
deed9e25 |
525 | Socket mactcp_newlistener(char *srcaddr, int port, Plug plug, |
a53784ab |
526 | int local_host_only, int address_family) |
0c4b7799 |
527 | { |
528 | |
deed9e25 |
529 | fatalbox("mactcp_newlistener"); |
0c4b7799 |
530 | } |
531 | |
2beb0fb0 |
532 | static void mactcp_close(Socket sock) |
533 | { |
534 | Actual_Socket s = (Actual_Socket)sock; |
535 | TCPiopb pb; |
536 | |
537 | /* |
538 | * TCPClose is equivalent to shutdown(fd, SHUT_WR), and hence |
539 | * leaves the Rx side open, while TCPAbort seems rather vicious, |
540 | * throwing away Tx data that haven't been ACKed yet. We do both |
541 | * in succession. |
542 | */ |
543 | pb.ioCRefNum = mactcp.refnum; |
544 | pb.csCode = TCPClose; |
545 | pb.tcpStream = s->s; |
546 | pb.csParam.close.validityFlags = 0; |
547 | pb.csParam.close.userDataPtr = (Ptr)s; |
548 | s->err = PBControlSync((ParmBlkPtr)&pb); |
549 | /* Not much we can do about an error anyway. */ |
550 | |
551 | pb.ioCRefNum = mactcp.refnum; |
552 | pb.csCode = TCPAbort; |
553 | pb.tcpStream = s->s; |
554 | pb.csParam.abort.userDataPtr = (Ptr)s; |
555 | s->err = PBControlSync((ParmBlkPtr)&pb); |
556 | /* Even less we can do about an error here. */ |
557 | |
558 | pb.ioCRefNum = mactcp.refnum; |
559 | pb.csCode = TCPRelease; |
560 | pb.tcpStream = s->s; |
561 | pb.csParam.create.userDataPtr = (Ptr)s; |
562 | s->err = PBControlSync((ParmBlkPtr)&pb); |
563 | if (s->err == noErr) |
564 | sfree(pb.csParam.create.rcvBuff); |
d25f9823 |
565 | |
566 | /* Unhitch from list of sockets */ |
567 | *s->prev = s->next; |
568 | if (s->next != NULL) |
569 | s->next->prev = s->prev; |
570 | |
2beb0fb0 |
571 | sfree(s); |
572 | } |
573 | |
9b57f6ea |
574 | static int mactcp_write(Socket sock, char const *buf, int len) |
2beb0fb0 |
575 | { |
576 | Actual_Socket s = (Actual_Socket) sock; |
577 | wdsEntry wds[2]; |
578 | TCPiopb pb; |
579 | |
9b57f6ea |
580 | /* |
581 | * Casting away const from buf should be safe -- MacTCP won't |
582 | * write to it. |
583 | */ |
2beb0fb0 |
584 | wds[0].length = len; |
9b57f6ea |
585 | wds[0].ptr = (char *)buf; |
2beb0fb0 |
586 | wds[1].length = 0; |
587 | |
588 | pb.ioCRefNum = mactcp.refnum; |
589 | pb.csCode = TCPSend; |
590 | pb.tcpStream = s->s; |
591 | pb.csParam.send.validityFlags = 0; |
592 | pb.csParam.send.pushFlag = TRUE; /* XXX we want it to return. */ |
593 | pb.csParam.send.urgentFlag = 0; |
594 | pb.csParam.send.wdsPtr = (Ptr)wds; |
595 | pb.csParam.send.userDataPtr = (Ptr)s; |
596 | s->err = PBControlSync((ParmBlkPtr)&pb); |
597 | return 0; |
598 | } |
599 | |
9b57f6ea |
600 | static int mactcp_write_oob(Socket sock, char const *buf, int len) |
2beb0fb0 |
601 | { |
602 | |
603 | fatalbox("mactcp_write_oob"); |
604 | } |
605 | |
5221f554 |
606 | static pascal void mactcp_asr(StreamPtr str, unsigned short event, Ptr cookie, |
607 | unsigned short termin_reason, |
608 | struct ICMPReport *icmp) |
609 | { |
610 | |
611 | WakeUpProcess(&mactcp.self); |
612 | } |
613 | |
2beb0fb0 |
614 | /* |
d25f9823 |
615 | * Called from our event loop if there's work to do. |
616 | */ |
617 | void mactcp_poll(void) |
618 | { |
5320c492 |
619 | Actual_Socket s, next; |
d25f9823 |
620 | TCPiopb pb; |
621 | |
5320c492 |
622 | for (s = mactcp.socklist; s != NULL; s = next) { |
623 | next = s->next; |
90588fc6 |
624 | do { |
625 | pb.ioCRefNum = mactcp.refnum; |
626 | pb.csCode = TCPStatus; |
627 | pb.tcpStream = s->s; |
628 | pb.csParam.status.userDataPtr = (Ptr)s; |
629 | s->err = PBControlSync((ParmBlkPtr)&pb); |
630 | if (s->err != noErr) |
631 | goto next_socket; |
632 | if (pb.csParam.status.amtUnreadData == 0) |
633 | break; |
d25f9823 |
634 | mactcp_recv(s, pb.csParam.status.amtUnreadData); |
90588fc6 |
635 | } while (TRUE); |
77642124 |
636 | switch (pb.csParam.status.connectionState) { |
637 | case TCPS_CLOSE_WAIT: |
638 | /* Remote end has sent us a FIN */ |
639 | plug_closing(s->plug, NULL, 0, 0); |
640 | } |
90588fc6 |
641 | next_socket: |
642 | ; |
d25f9823 |
643 | } |
644 | } |
645 | |
646 | static void mactcp_recv(Actual_Socket s, size_t len) |
647 | { |
648 | rdsEntry rds[2]; |
649 | TCPiopb pb; |
650 | |
651 | if (s->frozen) return; |
652 | |
653 | while (len > 0) { |
654 | pb.ioCRefNum = mactcp.refnum; |
655 | pb.csCode = TCPNoCopyRcv; |
656 | pb.tcpStream = s->s; |
657 | pb.csParam.receive.commandTimeoutValue = 0; |
658 | pb.csParam.receive.rdsPtr = (Ptr)rds; |
659 | pb.csParam.receive.rdsLength = lenof(rds) - 1; |
660 | pb.csParam.receive.userDataPtr = (Ptr)s; |
661 | s->err = PBControlSync((ParmBlkPtr)&pb); |
662 | if (s->err != noErr) |
663 | return; |
664 | plug_receive(s->plug, 0, rds[0].ptr, rds[0].length); |
665 | len -= rds[0].length; |
666 | pb.csCode = TCPRcvBfrReturn; |
667 | s->err = PBControlSync((ParmBlkPtr)&pb); |
668 | if (s->err != noErr) |
669 | return; |
670 | } |
671 | } |
672 | |
673 | /* |
2beb0fb0 |
674 | * Each socket abstraction contains a `void *' private field in |
675 | * which the client can keep state. |
676 | */ |
677 | static void mactcp_set_private_ptr(Socket sock, void *ptr) |
678 | { |
679 | Actual_Socket s = (Actual_Socket) sock; |
680 | s->private_ptr = ptr; |
681 | } |
193194e2 |
682 | |
2beb0fb0 |
683 | static void *mactcp_get_private_ptr(Socket sock) |
684 | { |
685 | Actual_Socket s = (Actual_Socket) sock; |
686 | return s->private_ptr; |
193194e2 |
687 | } |
688 | |
689 | /* |
deed9e25 |
690 | * Special error values are returned from mactcp_namelookup and |
691 | * mactcp_new if there's a problem. These functions extract an error |
692 | * message, or return NULL if there's no problem. |
193194e2 |
693 | */ |
deed9e25 |
694 | char *mactcp_addr_error(SockAddr addr) |
193194e2 |
695 | { |
696 | static char buf[64]; |
697 | |
698 | switch (addr->hostinfo.rtnCode) { |
699 | case noErr: |
700 | return NULL; |
701 | case nameSyntaxErr: |
702 | return "Name syntax error"; |
703 | case noNameServer: |
704 | return "No name server found"; |
705 | case authNameErr: |
706 | return "Domain name does not exist"; |
707 | case noAnsErr: |
708 | return "No answer from domain name server"; |
709 | case dnrErr: |
710 | return "Domain name server returned an error"; |
711 | case outOfMemory: |
712 | return "Out of memory"; |
713 | default: |
714 | sprintf(buf, "Unknown DNR error %d", addr->hostinfo.rtnCode); |
715 | return buf; |
716 | } |
717 | } |
718 | |
cbe2d68f |
719 | static const char *mactcp_socket_error(Socket sock) |
2beb0fb0 |
720 | { |
721 | static char buf[64]; |
722 | Actual_Socket s = (Actual_Socket) sock; |
723 | |
724 | switch (s->err) { |
725 | case noErr: |
726 | return NULL; |
727 | case insufficientResources: |
728 | return "Insufficient resources to open TCP stream"; |
729 | case duplicateSocket: |
730 | return "Duplicate socket"; |
731 | case openFailed: |
732 | return "Connection failed while opening"; |
733 | default: |
734 | sprintf(buf, "Unknown MacTCP error %d", s->err); |
735 | return buf; |
736 | } |
737 | } |
738 | |
739 | static void mactcp_set_frozen(Socket sock, int is_frozen) |
740 | { |
d25f9823 |
741 | Actual_Socket s = (Actual_Socket) sock; |
2beb0fb0 |
742 | |
d25f9823 |
743 | if (s->frozen == is_frozen) |
744 | return; |
745 | s->frozen = is_frozen; |
2beb0fb0 |
746 | } |
193194e2 |
747 | |
748 | /* |
749 | * Bits below here would usually be in dnr.c, shipped with the MacTCP |
750 | * SDK, but its convenient not to require that, and since we assume |
751 | * System 7 we can actually simplify things a lot. |
752 | */ |
753 | |
754 | static OSErr OpenResolver(char *hosts_file) |
755 | { |
756 | short vrefnum; |
757 | long dirid; |
758 | HParamBlockRec pb; |
759 | Str255 filename; |
760 | OSErr err; |
761 | int fd; |
762 | Handle dnr_handle; |
763 | |
764 | if (mactcp.dnr_handle != NULL) |
765 | return noErr; |
766 | |
767 | err = FindFolder(kOnSystemDisk, kControlPanelFolderType, FALSE, &vrefnum, |
768 | &dirid); |
769 | if (err != noErr) return err; |
770 | |
771 | /* |
772 | * Might be better to use PBCatSearch here, but it's not always |
773 | * available. |
774 | */ |
775 | pb.fileParam.ioCompletion = NULL; |
776 | pb.fileParam.ioNamePtr = filename; |
777 | pb.fileParam.ioVRefNum = vrefnum; |
778 | pb.fileParam.ioFDirIndex = 1; |
779 | pb.fileParam.ioDirID = dirid; |
780 | fd = -1; |
781 | |
2beb0fb0 |
782 | while (PBHGetFInfoSync(&pb) == noErr) { |
193194e2 |
783 | if (pb.fileParam.ioFlFndrInfo.fdType == 'cdev' && |
784 | pb.fileParam.ioFlFndrInfo.fdCreator == 'ztcp') { |
785 | fd = HOpenResFile(vrefnum, dirid, filename, fsRdPerm); |
786 | if (fd == -1) continue; |
787 | dnr_handle = Get1IndResource('dnrp', 1); |
788 | if (dnr_handle != NULL) |
789 | break; |
790 | CloseResFile(fd); |
791 | fd = -1; |
792 | } |
793 | pb.fileParam.ioDirID = dirid; |
794 | pb.fileParam.ioFDirIndex++; |
795 | } |
796 | if (fd == -1) |
797 | return fnfErr; |
798 | |
799 | DetachResource(dnr_handle); |
800 | CloseResFile(fd); |
801 | |
802 | MoveHHi(dnr_handle); |
803 | HLock(dnr_handle); |
804 | |
805 | err = InvokeOpenResolverUPP(OPENRESOLVER, hosts_file, |
806 | (OpenResolverUPP)*dnr_handle); |
807 | if (err != noErr) { |
808 | HUnlock(dnr_handle); |
809 | DisposeHandle(dnr_handle); |
810 | return err; |
811 | } |
812 | |
813 | mactcp.dnr_handle = dnr_handle; |
814 | return noErr; |
815 | } |
816 | |
817 | OSErr CloseResolver(void) |
818 | { |
819 | Handle dnr_handle = mactcp.dnr_handle; |
820 | OSErr err; |
821 | |
822 | if (mactcp.dnr_handle == NULL) |
823 | return notOpenErr; |
824 | |
825 | err = InvokeCloseResolverUPP(CLOSERESOLVER, |
826 | (CloseResolverUPP)*mactcp.dnr_handle); |
827 | if (err != noErr) |
828 | return err; |
829 | |
830 | mactcp.dnr_handle = NULL; |
831 | HUnlock(dnr_handle); |
832 | DisposeHandle(dnr_handle); |
833 | return noErr; |
834 | } |
835 | |
b2859f7a |
836 | #endif |
0c4b7799 |
837 | |
193194e2 |
838 | /* |
839 | * Local Variables: |
840 | * c-file-style: "simon" |
841 | * End: |
842 | */ |