2 * Macintosh OpenTransport networking abstraction
5 #include <OpenTransport.h>
6 #include <OpenTptInternet.h>
10 #define DEFINE_PLUG_METHOD_MACROS
16 struct socket_function_table *fn;
25 int frozen; /* this causes readability notifications to be ignored */
26 int frozen_readable; /* this means we missed at least one readability
27 * notification while we were frozen */
28 int localhost_only; /* for listening sockets */
31 int oobpending; /* is there OOB data available to read?*/
33 int pending_error; /* in case send() returns error */
35 struct Socket_tag *next;
36 struct Socket_tag **prev;
39 typedef struct Socket_tag *Actual_Socket;
44 InetHostInfo hostinfo;
51 Actual_Socket socklist;
59 err = InitOpenTransport();
60 if (err != kOTNoError) return err;
61 ot.inetsvc = OTOpenInternetServices(kDefaultInternetServicesPath, 0, &err);
69 for (s = ot.socklist; s !=NULL; s = s->next) {
71 OTCloseProvider(s->ep);
77 SockAddr ot_namelookup(char const *host, char **canonicalname)
79 SockAddr ret = smalloc(sizeof(struct SockAddr_tag));
82 /* Casting away const -- hope OTInetStringToAddress is sensible */
83 ret->error = OTInetStringToAddress(ot.inetsvc, (char *)host,
87 if (ret->error == kOTNoError)
88 realhost = ret->hostinfo.name;
91 *canonicalname = smalloc(1+strlen(realhost));
92 strcpy(*canonicalname, realhost);
96 SockAddr ot_nonamelookup(char const *host)
98 SockAddr ret = smalloc(sizeof(struct SockAddr_tag));
100 ret->resolved = FALSE;
101 ret->error = kOTNoError;
102 ret->hostname[0] = '\0';
103 strncat(ret->hostname, host, lenof(ret->hostname) - 1);
107 void ot_getaddr(SockAddr addr, char *buf, int buflen)
112 if (addr->resolved) {
113 /* XXX only return first address */
114 OTInetHostToString(addr->hostinfo.addrs[0], mybuf);
115 strncat(buf, mybuf, buflen - 1);
117 strncat(buf, addr->hostname, buflen - 1);
120 /* I think "local" here really means "loopback" */
122 int ot_hostname_is_local(char *name)
125 return !strcmp(name, "localhost");
128 int ot_address_is_local(SockAddr addr)
133 for (i = 0; i < kMaxHostAddrs; i++)
134 if (addr->hostinfo.addrs[i] & 0xff000000 == 0x7f000000)
139 int ot_addrtype(SockAddr addr)
143 return ADDRTYPE_IPV4;
144 return ADDRTYPE_NAME;
147 void ot_addrcopy(SockAddr addr, char *buf)
150 /* XXX only return first address */
151 memcpy(buf, &addr->hostinfo.addrs[0], 4);
154 void ot_addr_free(SockAddr addr)
160 static Plug ot_tcp_plug(Socket sock, Plug p)
162 Actual_Socket s = (Actual_Socket) sock;
169 static void ot_tcp_flush(Socket s)
172 * We send data to the socket as soon as we can anyway,
173 * so we don't need to do anything here. :-)
177 static void ot_tcp_close(Socket s);
178 static int ot_tcp_write(Socket s, char const *data, int len);
179 static int ot_tcp_write_oob(Socket s, char const *data, int len);
180 static void ot_tcp_set_private_ptr(Socket s, void *ptr);
181 static void *ot_tcp_get_private_ptr(Socket s);
182 static void ot_tcp_set_frozen(Socket s, int is_frozen);
183 static char *ot_tcp_socket_error(Socket s);
184 static void ot_recv(Actual_Socket s);
187 Socket ot_register(void *sock, Plug plug)
189 static struct socket_function_table fn_table = {
195 ot_tcp_set_private_ptr,
196 ot_tcp_get_private_ptr,
203 ret = smalloc(sizeof(struct Socket_tag));
205 ret->error = kOTNoError;
207 bufchain_init(&ret->output_data);
208 ret->writable = 1; /* to start with */
209 ret->sending_oob = 0;
211 ret->frozen_readable = 0;
212 ret->localhost_only = 0; /* unused, but best init anyway */
213 ret->pending_error = 0;
214 ret->oobpending = FALSE;
217 ret->ep = (EndpointRef)sock;
219 /* some sort of error checking */
223 /* Add this to the list of all sockets */
224 ret->next = ot.socklist;
225 ret->prev = &ot.socklist;
231 Socket ot_new(SockAddr addr, int port, int privport, int oobinline,
232 int nodelay, Plug plug)
234 static struct socket_function_table fn_table = {
240 ot_tcp_set_private_ptr,
241 ot_tcp_get_private_ptr,
252 ret = smalloc(sizeof(struct Socket_tag));
254 ret->error = kOTNoError;
256 bufchain_init(&ret->output_data);
257 ret->connected = 0; /* to start with */
258 ret->writable = 0; /* to start with */
259 ret->sending_oob = 0;
261 ret->frozen_readable = 0;
262 ret->localhost_only = 0; /* unused, but best init anyway */
263 ret->pending_error = 0;
264 ret->oobinline = oobinline;
265 ret->oobpending = FALSE;
268 /* Open Endpoint, configure it for TCP over anything */
270 ep = OTOpenEndpoint(OTCreateConfiguration("tcp"), 0, NULL, &err);
279 /* TODO: oobinline, nodelay */
282 * Bind to local address.
285 /* FIXME: pay attention to privport */
287 err = OTBind(ep, NULL, NULL); /* OpenTransport always picks our address */
295 * Connect to remote address.
298 /* XXX Try non-primary addresses */
299 OTInitInetAddress(&dest, port, addr->hostinfo.addrs[0]);
301 memset(&connectCall, 0, sizeof(TCall));
302 connectCall.addr.buf = (UInt8 *) &dest;
303 connectCall.addr.len = sizeof(dest);
305 err = OTConnect(ep, &connectCall, nil);
315 /* Add this to the list of all sockets */
316 ret->next = ot.socklist;
317 ret->prev = &ot.socklist;
318 if (ret->next != NULL)
319 ret->next->prev = &ret->next;
325 Socket ot_newlistener(char *foobar, int port, Plug plug, int local_host_only)
332 static void ot_tcp_close(Socket sock)
334 Actual_Socket s = (Actual_Socket) sock;
336 OTCloseProvider(s->ep);
338 /* Unhitch from list of sockets */
341 s->next->prev = s->prev;
346 static void try_send(Actual_Socket s)
348 while (bufchain_size(&s->output_data) > 0) {
353 /* Don't care about oob right now */
355 bufchain_prefix(&s->output_data, &data, &len);
357 nsent = OTSnd(s->ep, data, len, 0);
358 noise_ultralight(nsent);
361 /* something bad happened, hey ho */
363 /* still don't care about oob */
364 bufchain_consume(&s->output_data, nsent);
369 static int ot_tcp_write(Socket sock, char const *buf, int len)
371 Actual_Socket s = (Actual_Socket) sock;
373 bufchain_add(&s->output_data, buf, len);
377 return bufchain_size(&s->output_data);
380 static int ot_tcp_write_oob(Socket sock, char const *buf, int len)
382 /* Don't care about oob */
388 * Each socket abstraction contains a `void *' private field in
389 * which the client can keep state.
391 static void ot_tcp_set_private_ptr(Socket sock, void *ptr)
393 Actual_Socket s = (Actual_Socket) sock;
394 s->private_ptr = ptr;
397 static void *ot_tcp_get_private_ptr(Socket sock)
399 Actual_Socket s = (Actual_Socket) sock;
400 return s->private_ptr;
405 * Special error values are returned from ot_namelookup and ot_new
406 * if there's a problem. These functions extract an error message,
407 * or return NULL if there's no problem.
409 char *ot_addr_error(SockAddr addr)
411 static char buf[128];
413 if (addr->error == kOTNoError)
415 sprintf(buf, "error %d", addr->error);
418 static char *ot_tcp_socket_error(Socket sock)
420 Actual_Socket s = (Actual_Socket) sock;
421 static char buf[128];
423 if (s->error == kOTNoError)
425 sprintf(buf, "error %d", s->error);
429 static void ot_tcp_set_frozen(Socket sock, int is_frozen)
431 Actual_Socket s = (Actual_Socket) sock;
433 if (s->frozen == is_frozen)
435 s->frozen = is_frozen;
439 * Poll all our sockets from an event loop
447 for (s = ot.socklist; s != NULL; s = s->next) {
451 case T_DATA: /* Normal Data */
454 case T_EXDATA: /* Expedited Data (urgent?) */
461 void ot_recv(Actual_Socket s)
467 if (s->frozen) return;
470 o = OTRcv(s->ep, buf, sizeof(buf), &flags);
472 plug_receive(s->plug, 0, buf, o);
473 if (o < 0 && o != kOTNoDataErr)
474 plug_closing(s->plug, NULL, 0, 0); /* XXX Error msg */
481 * c-file-style: "simon"