| 1 | /* |
| 2 | * Macintosh OpenTransport networking abstraction |
| 3 | */ |
| 4 | |
| 5 | #if TARGET_API_MAC_CARBON |
| 6 | #define OTCARBONAPPLICATION 1 |
| 7 | #endif |
| 8 | |
| 9 | #include <Files.h> /* Needed by OpenTransportInternet.h */ |
| 10 | #include <OpenTransport.h> |
| 11 | #include <OpenTptInternet.h> |
| 12 | |
| 13 | #include <string.h> |
| 14 | |
| 15 | #define DEFINE_PLUG_METHOD_MACROS |
| 16 | #include "putty.h" |
| 17 | #include "network.h" |
| 18 | #include "mac.h" |
| 19 | |
| 20 | struct Socket_tag { |
| 21 | struct socket_function_table *fn; |
| 22 | /* other stuff... */ |
| 23 | OSStatus error; |
| 24 | EndpointRef ep; |
| 25 | Plug plug; |
| 26 | void *private_ptr; |
| 27 | bufchain output_data; |
| 28 | int connected; |
| 29 | int writable; |
| 30 | int frozen; /* this causes readability notifications to be ignored */ |
| 31 | int frozen_readable; /* this means we missed at least one readability |
| 32 | * notification while we were frozen */ |
| 33 | int localhost_only; /* for listening sockets */ |
| 34 | char oobdata[1]; |
| 35 | int sending_oob; |
| 36 | int oobpending; /* is there OOB data available to read?*/ |
| 37 | int oobinline; |
| 38 | int pending_error; /* in case send() returns error */ |
| 39 | int listener; |
| 40 | struct Socket_tag *next; |
| 41 | struct Socket_tag **prev; |
| 42 | }; |
| 43 | |
| 44 | typedef struct Socket_tag *Actual_Socket; |
| 45 | |
| 46 | struct SockAddr_tag { |
| 47 | int resolved; |
| 48 | OSStatus error; |
| 49 | InetHostInfo hostinfo; |
| 50 | char hostname[512]; |
| 51 | }; |
| 52 | |
| 53 | /* Globals */ |
| 54 | |
| 55 | static struct { |
| 56 | Actual_Socket socklist; |
| 57 | InetSvcRef inetsvc; |
| 58 | } ot; |
| 59 | |
| 60 | OSErr ot_init(void) |
| 61 | { |
| 62 | OSStatus err; |
| 63 | |
| 64 | err = InitOpenTransport(); |
| 65 | if (err != kOTNoError) return err; |
| 66 | ot.inetsvc = OTOpenInternetServices(kDefaultInternetServicesPath, 0, &err); |
| 67 | return err; |
| 68 | } |
| 69 | |
| 70 | void ot_cleanup(void) |
| 71 | { |
| 72 | Actual_Socket s; |
| 73 | |
| 74 | for (s = ot.socklist; s !=NULL; s = s->next) { |
| 75 | OTUnbind(s->ep); |
| 76 | OTCloseProvider(s->ep); |
| 77 | } |
| 78 | |
| 79 | CloseOpenTransport(); |
| 80 | } |
| 81 | |
| 82 | SockAddr ot_namelookup(char const *host, char **canonicalname) |
| 83 | { |
| 84 | SockAddr ret = snew(struct SockAddr_tag); |
| 85 | char *realhost; |
| 86 | |
| 87 | /* Casting away const -- hope OTInetStringToAddress is sensible */ |
| 88 | ret->error = OTInetStringToAddress(ot.inetsvc, (char *)host, |
| 89 | &ret->hostinfo); |
| 90 | ret->resolved = TRUE; |
| 91 | |
| 92 | if (ret->error == kOTNoError) |
| 93 | realhost = ret->hostinfo.name; |
| 94 | else |
| 95 | realhost = ""; |
| 96 | *canonicalname = snewn(1+strlen(realhost), char); |
| 97 | strcpy(*canonicalname, realhost); |
| 98 | return ret; |
| 99 | } |
| 100 | |
| 101 | SockAddr ot_nonamelookup(char const *host) |
| 102 | { |
| 103 | SockAddr ret = snew(struct SockAddr_tag); |
| 104 | |
| 105 | ret->resolved = FALSE; |
| 106 | ret->error = kOTNoError; |
| 107 | ret->hostname[0] = '\0'; |
| 108 | strncat(ret->hostname, host, lenof(ret->hostname) - 1); |
| 109 | return ret; |
| 110 | } |
| 111 | |
| 112 | void ot_getaddr(SockAddr addr, char *buf, int buflen) |
| 113 | { |
| 114 | char mybuf[16]; |
| 115 | |
| 116 | buf[0] = '\0'; |
| 117 | if (addr->resolved) { |
| 118 | /* XXX only return first address */ |
| 119 | OTInetHostToString(addr->hostinfo.addrs[0], mybuf); |
| 120 | strncat(buf, mybuf, buflen - 1); |
| 121 | } else |
| 122 | strncat(buf, addr->hostname, buflen - 1); |
| 123 | } |
| 124 | |
| 125 | /* I think "local" here really means "loopback" */ |
| 126 | |
| 127 | int ot_hostname_is_local(char *name) |
| 128 | { |
| 129 | |
| 130 | return !strcmp(name, "localhost"); |
| 131 | } |
| 132 | |
| 133 | int ot_address_is_local(SockAddr addr) |
| 134 | { |
| 135 | int i; |
| 136 | |
| 137 | if (addr->resolved) |
| 138 | for (i = 0; i < kMaxHostAddrs; i++) |
| 139 | if (addr->hostinfo.addrs[i] & 0xff000000 == 0x7f000000) |
| 140 | return TRUE; |
| 141 | return FALSE; |
| 142 | } |
| 143 | |
| 144 | int ot_addrtype(SockAddr addr) |
| 145 | { |
| 146 | |
| 147 | if (addr->resolved) |
| 148 | return ADDRTYPE_IPV4; |
| 149 | return ADDRTYPE_NAME; |
| 150 | } |
| 151 | |
| 152 | void ot_addrcopy(SockAddr addr, char *buf) |
| 153 | { |
| 154 | |
| 155 | /* XXX only return first address */ |
| 156 | memcpy(buf, &addr->hostinfo.addrs[0], 4); |
| 157 | } |
| 158 | |
| 159 | void ot_addr_free(SockAddr addr) |
| 160 | { |
| 161 | sfree(addr); |
| 162 | } |
| 163 | |
| 164 | |
| 165 | static Plug ot_tcp_plug(Socket sock, Plug p) |
| 166 | { |
| 167 | Actual_Socket s = (Actual_Socket) sock; |
| 168 | Plug ret = s->plug; |
| 169 | if (p) |
| 170 | s->plug = p; |
| 171 | return ret; |
| 172 | } |
| 173 | |
| 174 | static void ot_tcp_flush(Socket s) |
| 175 | { |
| 176 | /* |
| 177 | * We send data to the socket as soon as we can anyway, |
| 178 | * so we don't need to do anything here. :-) |
| 179 | */ |
| 180 | } |
| 181 | |
| 182 | static void ot_tcp_close(Socket s); |
| 183 | static int ot_tcp_write(Socket s, char const *data, int len); |
| 184 | static int ot_tcp_write_oob(Socket s, char const *data, int len); |
| 185 | static void ot_tcp_set_private_ptr(Socket s, void *ptr); |
| 186 | static void *ot_tcp_get_private_ptr(Socket s); |
| 187 | static void ot_tcp_set_frozen(Socket s, int is_frozen); |
| 188 | static const char *ot_tcp_socket_error(Socket s); |
| 189 | static void ot_recv(Actual_Socket s); |
| 190 | void ot_poll(void); |
| 191 | |
| 192 | Socket ot_register(void *sock, Plug plug) |
| 193 | { |
| 194 | static struct socket_function_table fn_table = { |
| 195 | ot_tcp_plug, |
| 196 | ot_tcp_close, |
| 197 | ot_tcp_write, |
| 198 | ot_tcp_write_oob, |
| 199 | ot_tcp_flush, |
| 200 | ot_tcp_set_private_ptr, |
| 201 | ot_tcp_get_private_ptr, |
| 202 | ot_tcp_set_frozen, |
| 203 | ot_tcp_socket_error |
| 204 | }; |
| 205 | |
| 206 | Actual_Socket ret; |
| 207 | |
| 208 | ret = snew(struct Socket_tag); |
| 209 | ret->fn = &fn_table; |
| 210 | ret->error = kOTNoError; |
| 211 | ret->plug = plug; |
| 212 | bufchain_init(&ret->output_data); |
| 213 | ret->writable = 1; /* to start with */ |
| 214 | ret->sending_oob = 0; |
| 215 | ret->frozen = 1; |
| 216 | ret->frozen_readable = 0; |
| 217 | ret->localhost_only = 0; /* unused, but best init anyway */ |
| 218 | ret->pending_error = 0; |
| 219 | ret->oobpending = FALSE; |
| 220 | ret->listener = 0; |
| 221 | |
| 222 | ret->ep = (EndpointRef)sock; |
| 223 | |
| 224 | /* some sort of error checking */ |
| 225 | |
| 226 | ret->oobinline = 0; |
| 227 | |
| 228 | /* Add this to the list of all sockets */ |
| 229 | ret->next = ot.socklist; |
| 230 | ret->prev = &ot.socklist; |
| 231 | ot.socklist = ret; |
| 232 | |
| 233 | return (Socket) ret; |
| 234 | } |
| 235 | |
| 236 | Socket ot_new(SockAddr addr, int port, int privport, int oobinline, |
| 237 | int nodelay, int keepalive, Plug plug) |
| 238 | { |
| 239 | static struct socket_function_table fn_table = { |
| 240 | ot_tcp_plug, |
| 241 | ot_tcp_close, |
| 242 | ot_tcp_write, |
| 243 | ot_tcp_write_oob, |
| 244 | ot_tcp_flush, |
| 245 | ot_tcp_set_private_ptr, |
| 246 | ot_tcp_get_private_ptr, |
| 247 | ot_tcp_set_frozen, |
| 248 | ot_tcp_socket_error |
| 249 | }; |
| 250 | |
| 251 | Actual_Socket ret; |
| 252 | EndpointRef ep; |
| 253 | OSStatus err; |
| 254 | InetAddress dest; |
| 255 | TCall connectCall; |
| 256 | |
| 257 | ret = snew(struct Socket_tag); |
| 258 | ret->fn = &fn_table; |
| 259 | ret->error = kOTNoError; |
| 260 | ret->plug = plug; |
| 261 | bufchain_init(&ret->output_data); |
| 262 | ret->connected = 0; /* to start with */ |
| 263 | ret->writable = 0; /* to start with */ |
| 264 | ret->sending_oob = 0; |
| 265 | ret->frozen = 0; |
| 266 | ret->frozen_readable = 0; |
| 267 | ret->localhost_only = 0; /* unused, but best init anyway */ |
| 268 | ret->pending_error = 0; |
| 269 | ret->oobinline = oobinline; |
| 270 | ret->oobpending = FALSE; |
| 271 | ret->listener = 0; |
| 272 | |
| 273 | /* Open Endpoint, configure it for TCP over anything */ |
| 274 | |
| 275 | ep = OTOpenEndpoint(OTCreateConfiguration("tcp"), 0, NULL, &err); |
| 276 | |
| 277 | ret->ep = ep; |
| 278 | |
| 279 | if (err) { |
| 280 | ret->error = err; |
| 281 | return (Socket) ret; |
| 282 | } |
| 283 | |
| 284 | /* TODO: oobinline, nodelay, keepalive */ |
| 285 | |
| 286 | /* |
| 287 | * Bind to local address. |
| 288 | */ |
| 289 | |
| 290 | /* FIXME: pay attention to privport */ |
| 291 | |
| 292 | err = OTBind(ep, NULL, NULL); /* OpenTransport always picks our address */ |
| 293 | |
| 294 | if (err) { |
| 295 | ret->error = err; |
| 296 | return (Socket) ret; |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | * Connect to remote address. |
| 301 | */ |
| 302 | |
| 303 | /* XXX Try non-primary addresses */ |
| 304 | OTInitInetAddress(&dest, port, addr->hostinfo.addrs[0]); |
| 305 | |
| 306 | memset(&connectCall, 0, sizeof(TCall)); |
| 307 | connectCall.addr.buf = (UInt8 *) &dest; |
| 308 | connectCall.addr.len = sizeof(dest); |
| 309 | |
| 310 | err = OTConnect(ep, &connectCall, nil); |
| 311 | |
| 312 | if (err) { |
| 313 | ret->error = err; |
| 314 | return (Socket) ret; |
| 315 | } else { |
| 316 | ret->connected = 1; |
| 317 | ret->writable = 1; |
| 318 | } |
| 319 | |
| 320 | /* Add this to the list of all sockets */ |
| 321 | ret->next = ot.socklist; |
| 322 | ret->prev = &ot.socklist; |
| 323 | if (ret->next != NULL) |
| 324 | ret->next->prev = &ret->next; |
| 325 | ot.socklist = ret; |
| 326 | |
| 327 | /* XXX: don't know whether we can sk_addr_free(addr); */ |
| 328 | |
| 329 | return (Socket) ret; |
| 330 | } |
| 331 | |
| 332 | Socket ot_newlistener(char *foobar, int port, Plug plug, int local_host_only) |
| 333 | { |
| 334 | Actual_Socket s; |
| 335 | |
| 336 | return (Socket) s; |
| 337 | } |
| 338 | |
| 339 | static void ot_tcp_close(Socket sock) |
| 340 | { |
| 341 | Actual_Socket s = (Actual_Socket) sock; |
| 342 | |
| 343 | OTCloseProvider(s->ep); |
| 344 | |
| 345 | /* Unhitch from list of sockets */ |
| 346 | *s->prev = s->next; |
| 347 | if (s->next != NULL) |
| 348 | s->next->prev = s->prev; |
| 349 | |
| 350 | sfree(s); |
| 351 | } |
| 352 | |
| 353 | static void try_send(Actual_Socket s) |
| 354 | { |
| 355 | while (bufchain_size(&s->output_data) > 0) { |
| 356 | int nsent; |
| 357 | void *data; |
| 358 | int len; |
| 359 | |
| 360 | /* Don't care about oob right now */ |
| 361 | |
| 362 | bufchain_prefix(&s->output_data, &data, &len); |
| 363 | |
| 364 | nsent = OTSnd(s->ep, data, len, 0); |
| 365 | noise_ultralight(nsent); |
| 366 | |
| 367 | if (nsent <= 0) { |
| 368 | /* something bad happened, hey ho */ |
| 369 | } else { |
| 370 | /* still don't care about oob */ |
| 371 | bufchain_consume(&s->output_data, nsent); |
| 372 | } |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | static int ot_tcp_write(Socket sock, char const *buf, int len) |
| 377 | { |
| 378 | Actual_Socket s = (Actual_Socket) sock; |
| 379 | |
| 380 | bufchain_add(&s->output_data, buf, len); |
| 381 | |
| 382 | if (s->writable) |
| 383 | try_send(s); |
| 384 | return bufchain_size(&s->output_data); |
| 385 | } |
| 386 | |
| 387 | static int ot_tcp_write_oob(Socket sock, char const *buf, int len) |
| 388 | { |
| 389 | /* Don't care about oob */ |
| 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | |
| 394 | /* |
| 395 | * Each socket abstraction contains a `void *' private field in |
| 396 | * which the client can keep state. |
| 397 | */ |
| 398 | static void ot_tcp_set_private_ptr(Socket sock, void *ptr) |
| 399 | { |
| 400 | Actual_Socket s = (Actual_Socket) sock; |
| 401 | s->private_ptr = ptr; |
| 402 | } |
| 403 | |
| 404 | static void *ot_tcp_get_private_ptr(Socket sock) |
| 405 | { |
| 406 | Actual_Socket s = (Actual_Socket) sock; |
| 407 | return s->private_ptr; |
| 408 | } |
| 409 | |
| 410 | |
| 411 | /* |
| 412 | * Special error values are returned from ot_namelookup and ot_new |
| 413 | * if there's a problem. These functions extract an error message, |
| 414 | * or return NULL if there's no problem. |
| 415 | */ |
| 416 | char *ot_addr_error(SockAddr addr) |
| 417 | { |
| 418 | static char buf[128]; |
| 419 | |
| 420 | if (addr->error == kOTNoError) |
| 421 | return NULL; |
| 422 | sprintf(buf, "error %d", addr->error); |
| 423 | return buf; |
| 424 | } |
| 425 | static const char *ot_tcp_socket_error(Socket sock) |
| 426 | { |
| 427 | Actual_Socket s = (Actual_Socket) sock; |
| 428 | static char buf[128]; |
| 429 | |
| 430 | if (s->error == kOTNoError) |
| 431 | return NULL; |
| 432 | sprintf(buf, "error %d", s->error); |
| 433 | return buf; |
| 434 | } |
| 435 | |
| 436 | static void ot_tcp_set_frozen(Socket sock, int is_frozen) |
| 437 | { |
| 438 | Actual_Socket s = (Actual_Socket) sock; |
| 439 | |
| 440 | if (s->frozen == is_frozen) |
| 441 | return; |
| 442 | s->frozen = is_frozen; |
| 443 | } |
| 444 | |
| 445 | /* |
| 446 | * Poll all our sockets from an event loop |
| 447 | */ |
| 448 | |
| 449 | void ot_poll(void) |
| 450 | { |
| 451 | Actual_Socket s; |
| 452 | OTResult o; |
| 453 | |
| 454 | for (s = ot.socklist; s != NULL; s = s->next) { |
| 455 | o = OTLook(s->ep); |
| 456 | |
| 457 | switch(o) { |
| 458 | case T_DATA: /* Normal Data */ |
| 459 | ot_recv(s); |
| 460 | break; |
| 461 | case T_EXDATA: /* Expedited Data (urgent?) */ |
| 462 | ot_recv(s); |
| 463 | break; |
| 464 | } |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | void ot_recv(Actual_Socket s) |
| 469 | { |
| 470 | OTResult o; |
| 471 | char buf[20480]; |
| 472 | OTFlags flags; |
| 473 | |
| 474 | if (s->frozen) return; |
| 475 | |
| 476 | do { |
| 477 | o = OTRcv(s->ep, buf, sizeof(buf), &flags); |
| 478 | if (o > 0) |
| 479 | plug_receive(s->plug, 0, buf, o); |
| 480 | if (o < 0 && o != kOTNoDataErr) |
| 481 | plug_closing(s->plug, NULL, 0, 0); /* XXX Error msg */ |
| 482 | } while (o > 0); |
| 483 | } |
| 484 | |
| 485 | |
| 486 | /* |
| 487 | * Local Variables: |
| 488 | * c-file-style: "simon" |
| 489 | * End: |
| 490 | */ |