Annotation of libwww/Library/src/HTNet.c, revision 2.79.2.2
2.23 frystyk 1: /* HTNet.c
2.79 frystyk 2: ** HTNet Class
2.1 frystyk 3: **
2.10 frystyk 4: ** (c) COPYRIGHT MIT 1995.
2.4 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
2.79.2.2! frystyk 6: ** @(#) $Id: HTNet.c,v 2.79.2.1 1996/10/29 21:27:08 eric Exp $
2.4 frystyk 7: **
8: ** This is the implementation of the internal library multithreading
2.1 frystyk 9: ** functions. This includes an interrupt handler and a event loop.
10: **
11: ** History:
2.14 frystyk 12: ** 12 June 94 Written by Henrik Frystyk, frystyk@w3.org
2.17 frystyk 13: ** 31 May 95 Charlie Brooks cbrooks@osf.org
14: **
2.1 frystyk 15: */
16:
2.9 frystyk 17: /* Implemention dependent include files */
2.52 frystyk 18: #include "sysdep.h"
2.9 frystyk 19:
2.1 frystyk 20: /* Library include files */
2.59 frystyk 21: #include "WWWUtil.h"
2.16 frystyk 22: #include "HTProt.h"
2.1 frystyk 23: #include "HTError.h"
2.25 frystyk 24: #include "HTAlert.h"
2.37 frystyk 25: #include "HTParse.h"
2.59 frystyk 26: #include "HTTrans.h"
2.74 frystyk 27: #include "HTHost.h"
28: #include "HTReq.h"
2.65 frystyk 29: #include "HTEvent.h"
2.23 frystyk 30: #include "HTStream.h"
2.79.2.1 eric 31: #include "HTHstMan.h"
32: #include "HTIOStream.h"
2.24 frystyk 33: #include "HTNetMan.h" /* Implemented here */
2.1 frystyk 34:
2.23 frystyk 35: #ifndef HT_MAX_SOCKETS
36: #define HT_MAX_SOCKETS 6
37: #endif
38:
2.74 frystyk 39: #define HASH_SIZE 67
40:
2.79 frystyk 41: typedef struct _BeforeFilter {
42: HTNetBefore * before; /* Filter function */
43: char * tmplate; /* URL template for when to call filter */
44: int order; /* Relative execution order */
2.60 frystyk 45: void * param; /* Local context */
2.79 frystyk 46: } BeforeFilter;
47:
48: typedef struct _AfterFilter {
49: HTNetAfter * after; /* Filter function */
50: char * tmplate; /* URL template for when to call filter */
51: int order; /* Relative execution order */
52: void * param; /* Local context */
53: int status; /* Status of load for when to call filter */
54: } AfterFilter;
2.23 frystyk 55:
56: struct _HTStream {
2.52 frystyk 57: const HTStreamClass * isa;
2.23 frystyk 58: /* ... */
59: };
60:
2.79.2.1 eric 61: struct _HTInputStream {
62: const HTInputStreamClass * isa;
63: /* ... */
64: };
65:
2.79 frystyk 66: PRIVATE HTList * HTBefore = NULL; /* List of global BEFORE filters */
67: PRIVATE HTList * HTAfter = NULL; /* List of global AFTER filters */
2.24 frystyk 68:
2.74 frystyk 69: PRIVATE int MaxActive = HT_MAX_SOCKETS; /* Max active requests */
70: PRIVATE int Active = 0; /* Counts open sockets */
71: PRIVATE int Persistent = 0; /* Counts persistent sockets */
2.1 frystyk 72:
2.74 frystyk 73: PRIVATE HTList ** NetTable = NULL; /* List of net objects */
74: PRIVATE int HTNetCount = 0; /* Counting elements in table */
2.23 frystyk 75:
76: /* ------------------------------------------------------------------------- */
2.79 frystyk 77: /* GENERIC BEFORE and AFTER filter Management */
2.23 frystyk 78: /* ------------------------------------------------------------------------- */
79:
2.79 frystyk 80: PRIVATE int HTBeforeOrder (const void * a, const void * b)
81: {
82: return ((BeforeFilter *) b)->order - ((BeforeFilter *) a)->order;
83: }
84:
85: PRIVATE int HTAfterOrder (const void * a, const void * b)
86: {
87: return ((AfterFilter *) b)->order - ((AfterFilter *) a)->order;
88: }
89:
90: PRIVATE int check_order (int order)
91: {
92: return (order<HT_FILTER_FIRST) ? HT_FILTER_FIRST :
93: (order>HT_FILTER_LAST) ? HT_FILTER_LAST : order;
94: }
95:
96: /*
97: ** Register a BEFORE filter in the list provided by the caller.
98: ** Several filters can be registered in which case they are called
99: ** with the filter ordering in mind.
100: */
101: PUBLIC BOOL HTNetCall_addBefore (HTList * list, HTNetBefore * before,
102: const char * tmplate, void * param,
103: int order)
104: {
105: if (list && before) {
106: BeforeFilter * me;
107: if ((me = (BeforeFilter *) HT_CALLOC(1, sizeof(BeforeFilter)))==NULL)
108: HT_OUTOFMEM("HTNetCall_addBefore");
109: me->before = before;
110: if (tmplate) StrAllocCopy(me->tmplate, tmplate);
111: me->order = check_order(order);
112: me->param = param;
113: if (CORE_TRACE)
114: HTTrace("Net Before.. Add %p with order %d tmplate `%s\' context %p\n",
115: before, me->order, tmplate ? tmplate : "<null>", param);
116: return (HTList_addObject(list, me) &&
117: HTList_insertionSort(list, HTBeforeOrder));
118: }
119: return NO;
120: }
121:
122: /*
123: ** Unregister all instances of a BEFORE filter from a list.
124: */
125: PUBLIC BOOL HTNetCall_deleteBefore (HTList * list, HTNetBefore * before)
126: {
127: if (CORE_TRACE) HTTrace("Net Before.. Delete %p\n", before);
128: if (list && before) {
129: HTList * cur = list;
130: BeforeFilter * pres;
131: while ((pres = (BeforeFilter *) HTList_nextObject(list))) {
132: if (pres->before == before) {
133: HTList_removeObject(list, (void *) pres);
134: HT_FREE(pres->tmplate);
135: HT_FREE(pres);
136: cur = list;
137: }
138: }
139: }
140: return NO;
141: }
142:
143: /*
144: ** Deletes all BEFORE filters in list
145: */
146: PUBLIC BOOL HTNetCall_deleteBeforeAll (HTList * list)
147: {
148: if (CORE_TRACE) HTTrace("Net Before. Delete All filters\n");
149: if (list) {
150: HTList * cur = list;
151: BeforeFilter * pres;
152: while ((pres = (BeforeFilter *) HTList_nextObject(cur))) {
153: HT_FREE(pres->tmplate);
154: HT_FREE(pres);
155: }
156: HTList_delete(list);
157: return YES;
158: }
159: return NO;
160: }
161:
162: /*
163: ** Call all the BEFORE filters in the order specified at registration
164: ** time. We also check for any template and whether it matches or not.
165: ** If a filter returns other than HT_OK then stop and return immediately.
166: ** Otherwise return what the last filter returns.
2.23 frystyk 167: */
2.79 frystyk 168: PUBLIC int HTNetCall_executeBefore (HTList * list, HTRequest * request)
2.23 frystyk 169: {
2.79 frystyk 170: HTParentAnchor * anchor = HTRequest_anchor(request);
171: char * url = HTAnchor_physical(anchor);
172: char * addr = url ? url : HTAnchor_address((HTAnchor *) anchor);
173: int ret = HT_OK;
174: int mode = 0;
175: if (list && request && addr) {
176: BeforeFilter * pres;
177: while ((pres = (BeforeFilter *) HTList_nextObject(list))) {
178: if (!pres->tmplate ||
179: (pres->tmplate && HTStrMatch(pres->tmplate, addr))) {
180: if (CORE_TRACE) HTTrace("Net Before.. calling %p (request %p, context %p)\n",
181: pres->before,
182: request, pres->param);
183: ret = (*pres->before)(request, pres->param, mode);
184: if (ret != HT_OK) break;
185: }
186: }
187: }
188: if (!url) HT_FREE(addr);
189: return ret;
190: }
191:
192: /*
193: ** Register a AFTER filter in the list provided by the caller.
194: ** Several filters can be registered in which case they are called
195: ** with the filter ordering in mind.
196: */
197: PUBLIC BOOL HTNetCall_addAfter (HTList * list, HTNetAfter * after,
198: const char * tmplate, void * param,
199: int status, int order)
200: {
201: if (list && after) {
202: AfterFilter * me;
203: if ((me = (AfterFilter *) HT_CALLOC(1, sizeof(AfterFilter)))==NULL)
204: HT_OUTOFMEM("HTNetCall_addAfter");
205: me->after = after;
206: if (tmplate) StrAllocCopy(me->tmplate, tmplate);
207: me->order = check_order(order);
2.60 frystyk 208: me->param = param;
2.33 frystyk 209: me->status = status;
2.79 frystyk 210: if (CORE_TRACE)
211: HTTrace("Net After... Add %p with order %d tmplate `%s\' code %d context %p\n",
212: after, me->order, tmplate ? tmplate : "<null>", status, param);
213: return (HTList_addObject(list, me) &&
214: HTList_insertionSort(list, HTAfterOrder));
215: }
216: return NO;
217: }
218:
219: /*
220: ** Unregister all instances of an AFTER filter from a list.
221: */
222: PUBLIC BOOL HTNetCall_deleteAfter (HTList * list, HTNetAfter * after)
223: {
224: if (CORE_TRACE) HTTrace("Net After... Delete %p\n", after);
225: if (list && after) {
226: HTList * cur = list;
227: AfterFilter * pres;
228: while ((pres = (AfterFilter *) HTList_nextObject(cur))) {
229: if (pres->after == after) {
230: HTList_removeObject(list, (void *) pres);
231: HT_FREE(pres->tmplate);
232: HT_FREE(pres);
233: cur = list;
234: }
235: }
2.23 frystyk 236: }
237: return NO;
238: }
239:
2.79 frystyk 240: /*
241: ** Unregister all filters registered for a given status.
2.23 frystyk 242: */
2.79 frystyk 243: PUBLIC BOOL HTNetCall_deleteAfterStatus (HTList * list, int status)
2.23 frystyk 244: {
2.79 frystyk 245: if (CORE_TRACE) HTTrace("Net After... Delete all with status %d\n",status);
246: if (list) {
247: HTList * cur = list;
248: AfterFilter * pres;
249: while ((pres = (AfterFilter *) HTList_nextObject(cur))) {
250: if (pres->status == status) {
2.33 frystyk 251: HTList_removeObject(list, (void *) pres);
2.79 frystyk 252: HT_FREE(pres->tmplate);
2.49 frystyk 253: HT_FREE(pres);
2.79 frystyk 254: cur = list;
2.23 frystyk 255: }
256: }
2.79 frystyk 257: return YES;
2.23 frystyk 258: }
259: return NO;
260: }
2.1 frystyk 261:
2.79 frystyk 262: /*
263: ** Deletes all AFTER filters in list
2.23 frystyk 264: */
2.79 frystyk 265: PUBLIC BOOL HTNetCall_deleteAfterAll (HTList * list)
2.23 frystyk 266: {
2.79 frystyk 267: if (CORE_TRACE) HTTrace("Net After. Delete All filters\n");
2.33 frystyk 268: if (list) {
2.79 frystyk 269: HTList * cur = list;
270: AfterFilter * pres;
271: while ((pres = (AfterFilter *) HTList_nextObject(cur))) {
272: HT_FREE(pres->tmplate);
2.49 frystyk 273: HT_FREE(pres);
2.23 frystyk 274: }
2.33 frystyk 275: HTList_delete(list);
2.23 frystyk 276: return YES;
277: }
278: return NO;
279: }
280:
2.79 frystyk 281: /*
282: ** Call all the AFTER filters in the order specified at registration
283: ** time and if it has the right status code and it's not HT_IGNORE.
284: ** We also check for any template and whether it matches or not.
285: ** If a filter returns other than HT_OK then stop and return immediately.
286: ** Otherwise return what the last filter returns.
2.23 frystyk 287: */
2.79 frystyk 288: PUBLIC int HTNetCall_executeAfter (HTList * list, HTRequest * request,
289: int status)
2.23 frystyk 290: {
2.33 frystyk 291: int ret = HT_OK;
2.79 frystyk 292: if (status != HT_IGNORE) {
293: HTParentAnchor * anchor = HTRequest_anchor(request);
294: char * url = HTAnchor_physical(anchor);
295: char * addr = url ? url : HTAnchor_address((HTAnchor *) anchor);
296: HTResponse * response = HTRequest_response(request);
297: if (list && request && addr) {
298: AfterFilter * pres;
299: while ((pres = (AfterFilter *) HTList_nextObject(list))) {
300: if ((pres->status == status || pres->status == HT_ALL) &&
301: (!pres->tmplate ||
302: (pres->tmplate && HTStrMatch(pres->tmplate, addr)))) {
303: if (CORE_TRACE)
304: HTTrace("Net After... calling %p (request %p, response %p, status %d, context %p)\n",
305: pres->after, request, response,
306: status, pres->param);
307: ret = (*pres->after)(request, response, pres->param, status);
308: if (ret != HT_OK) break;
309: }
2.23 frystyk 310: }
311: }
2.79 frystyk 312: if (!url) HT_FREE(addr);
2.1 frystyk 313: }
2.33 frystyk 314: return ret;
315: }
316:
2.79 frystyk 317: /* ------------------------------------------------------------------------- */
318: /* GLOBAL BEFORE and AFTER filter Management */
319: /* ------------------------------------------------------------------------- */
320:
2.33 frystyk 321: /*
322: ** Global set of callback functions BEFORE the request is issued
323: ** list can be NULL
324: */
325: PUBLIC BOOL HTNet_setBefore (HTList *list)
326: {
327: HTBefore = list;
328: return YES;
329: }
330:
331: PUBLIC HTList * HTNet_before (void)
332: {
333: return HTBefore;
334: }
335:
2.79 frystyk 336: PUBLIC BOOL HTNet_addBefore (HTNetBefore * before, const char * tmplate,
337: void * param, int order)
2.33 frystyk 338: {
2.79 frystyk 339: if (!HTBefore) HTBefore = HTList_new();
340: return HTNetCall_addBefore(HTBefore, before, tmplate, param, order);
2.33 frystyk 341: }
342:
2.79 frystyk 343: PUBLIC BOOL HTNet_deleteBefore (HTNetBefore * cbf)
2.33 frystyk 344: {
2.79 frystyk 345: return HTNetCall_deleteBefore(HTBefore, cbf);
2.33 frystyk 346: }
347:
2.79 frystyk 348: /*
349: ** Call both the local and the global BEFORE filters (if any)
350: */
351: PUBLIC int HTNet_executeBeforeAll (HTRequest * request)
2.73 frystyk 352: {
2.79 frystyk 353: int ret;
354: BOOL override = NO;
355: HTList * befores;
356: if ((befores = HTRequest_before(request, &override))) {
357: if ((ret = HTNetCall_executeBefore(befores, request)) != HT_OK)
358: return ret;
359: }
360: return override ? HT_OK : HTNetCall_executeBefore(HTBefore, request);
2.73 frystyk 361: }
362:
2.33 frystyk 363: /*
364: ** Global set of callback functions AFTER the request is issued
365: ** list can be NULL
366: */
367: PUBLIC BOOL HTNet_setAfter (HTList *list)
368: {
369: HTAfter = list;
370: return YES;
371: }
372:
373: PUBLIC HTList * HTNet_after (void)
374: {
375: return HTAfter;
376: }
377:
2.79 frystyk 378: PUBLIC BOOL HTNet_addAfter (HTNetAfter * after, const char * tmplate,
379: void * param, int status, int order)
2.33 frystyk 380: {
2.79 frystyk 381: if (!HTAfter) HTAfter = HTList_new();
382: return HTNetCall_addAfter(HTAfter, after, tmplate, param, status, order);
383: }
2.58 hallam 384:
2.79 frystyk 385: PUBLIC BOOL HTNet_deleteAfter (HTNetAfter * cbf)
386: {
387: return HTNetCall_deleteAfter(HTAfter, cbf);
2.33 frystyk 388: }
389:
2.79 frystyk 390: PUBLIC BOOL HTNet_deleteAfterStatus (int status)
2.33 frystyk 391: {
2.79 frystyk 392: return HTNetCall_deleteAfterStatus(HTAfter, status);
2.73 frystyk 393: }
394:
2.79 frystyk 395: /*
396: ** Call both the local and the global AFTER filters (if any)
397: */
398: PUBLIC int HTNet_executeAfterAll (HTRequest * request, int status)
2.73 frystyk 399: {
2.79 frystyk 400: int ret;
401: BOOL override = NO;
402: HTList * afters;
403: if ((afters = HTRequest_after(request, &override))) {
404: if ((ret = HTNetCall_executeAfter(afters, request, status)) != HT_OK)
405: return ret;
406: }
407: return override ? HT_OK : HTNetCall_executeAfter(HTAfter, request, status);
2.1 frystyk 408: }
409:
2.23 frystyk 410: /* ------------------------------------------------------------------------- */
2.74 frystyk 411: /* Socket Management */
2.23 frystyk 412: /* ------------------------------------------------------------------------- */
2.1 frystyk 413:
2.74 frystyk 414: PUBLIC int HTNet_maxSocket (void)
415: {
416: return MaxActive;
417: }
418:
419: PUBLIC BOOL HTNet_setMaxSocket (int newmax)
420: {
421: if (newmax > 0) {
422: MaxActive = newmax;
423: return YES;
424: }
425: return NO;
426: }
427:
428: PUBLIC void HTNet_increaseSocket (void)
429: {
430: Active++;
431: if (CORE_TRACE) HTTrace("Net Manager. %d open sockets\n", Active);
432: }
433:
434: PUBLIC void HTNet_decreaseSocket (void)
435: {
436: if (--Active < 0) Active = 0;
437: if (CORE_TRACE) HTTrace("Net Manager. %d open sockets\n", Active);
438: }
439:
440: PUBLIC int HTNet_availableSockets (void)
441: {
442: int available = MaxActive - Active;
443: return available > 0 ? available : 0;
444: }
445:
446: PUBLIC void HTNet_increasePersistentSocket (void)
447: {
448: Persistent++;
449: if (CORE_TRACE) HTTrace("Net Manager. %d persistent sockets\n", Persistent);
450: }
451:
452: PUBLIC void HTNet_decreasePersistentSocket (void)
2.23 frystyk 453: {
2.74 frystyk 454: if (--Persistent < 0) Persistent = 0;
455: if (CORE_TRACE) HTTrace("Net Manager. %d persistent sockets\n", Persistent);
2.23 frystyk 456: }
2.17 frystyk 457:
2.74 frystyk 458: PUBLIC int HTNet_availablePersistentSockets (void)
2.28 frystyk 459: {
2.74 frystyk 460: int available = MaxActive - 2 - Persistent;
461: return available > 0 ? available : 0;
2.28 frystyk 462: }
463:
2.74 frystyk 464: /*
465: ** Returns whether there are any Net objects pending or active
2.40 frystyk 466: */
2.74 frystyk 467: PUBLIC BOOL HTNet_isIdle (void)
2.40 frystyk 468: {
2.74 frystyk 469: return (HTNetCount > 0);
2.40 frystyk 470: }
471:
2.74 frystyk 472: PUBLIC BOOL HTNet_isEmpty (void)
2.1 frystyk 473: {
2.74 frystyk 474: return (HTNetCount <= 0);
2.1 frystyk 475: }
476:
2.23 frystyk 477: /* ------------------------------------------------------------------------- */
478: /* Creation and deletion methods */
479: /* ------------------------------------------------------------------------- */
480:
2.74 frystyk 481: PRIVATE HTNet * create_object (void)
482: {
483: static int net_hash = 0;
484: HTNet * me = NULL;
485:
486: /* Create new object */
487: if ((me = (HTNet *) HT_CALLOC(1, sizeof(HTNet))) == NULL)
488: HT_OUTOFMEM("HTNet_new");
489: me->hash = net_hash++ % HASH_SIZE;
490:
491: /* Insert into hash table */
492: if (!NetTable) {
493: if ((NetTable = (HTList **) HT_CALLOC(HASH_SIZE, sizeof(HTList *))) == NULL)
494: HT_OUTOFMEM("create_object");
495: }
496: if (!NetTable[me->hash]) NetTable[me->hash] = HTList_new();
497: HTList_addObject(NetTable[me->hash], (void *) me);
498: HTNetCount++;
499: if (CORE_TRACE)
500: HTTrace("Net Object.. %p created with hash %d\n",me, me->hash);
501: return me;
502: }
503:
2.27 frystyk 504: /* HTNet_duplicate
505: ** ---------------
506: ** Creates a new HTNet object as a duplicate of the same request.
507: ** Returns YES if OK, else NO
508: ** BUG: We do not check if we have a socket free!
509: */
2.43 frystyk 510: PUBLIC HTNet * HTNet_dup (HTNet * src)
2.27 frystyk 511: {
2.74 frystyk 512: if (src) {
513: HTNet * me;
2.75 frystyk 514: int hash;
2.74 frystyk 515: if ((me = create_object()) == NULL) return NULL;
2.75 frystyk 516: hash = me->hash;
2.74 frystyk 517: if (CORE_TRACE) HTTrace("Net Object.. Duplicated %p\n", src);
518: memcpy((void *) me, src, sizeof(HTNet));
2.75 frystyk 519: me->hash = hash; /* Carry over hash entry */
2.74 frystyk 520: return me;
521: }
522: return NULL;
2.27 frystyk 523: }
524:
2.74 frystyk 525: /*
526: ** Start a Net obejct by calling the protocol module.
2.30 frystyk 527: */
2.74 frystyk 528: PUBLIC BOOL HTNet_start (HTNet * net)
2.30 frystyk 529: {
2.79.2.1 eric 530: if (net && net->event.cbf && net->request) {
2.74 frystyk 531: if (CORE_TRACE) HTTrace("Net Object.. Launching %p\n", net);
2.79.2.1 eric 532: /* HTEvent_unregister(HTNet_socket(net), (SockOps) FD_ALL); */
533: (*(net->event.cbf))(HTNet_socket(net), NULL, HTEvent_NONE);
2.30 frystyk 534: return YES;
535: }
536: return NO;
537: }
538:
2.37 frystyk 539: /* HTNet_new
540: ** ---------
541: ** This function creates a new HTNet object and assigns the socket number
542: ** to it. This is intended to be used when you are going to listen on a
543: ** socket using the HTDoListen() function in HTTCP.c. The function do NOT
544: ** call any of the callback functions.
545: ** Returns new object or NULL on error
546: */
2.79.2.2! frystyk 547: PUBLIC HTNet * HTNet_new (HTRequest * request)
2.37 frystyk 548: {
2.79.2.2! frystyk 549: HTNet * me;
! 550: if ((me = create_object()) == NULL) return NULL;
! 551: me->preemptive = HTRequest_preemptive(request);
! 552: HTNet_setEventPriority(me, HTRequest_priority(request));
! 553: me->request = request;
! 554: HTRequest_setNet(request, me);
! 555: return me;
2.37 frystyk 556: }
557:
2.67 frystyk 558: /* HTNet_newServer
559: ** ---------------
560: ** Create a new HTNet object as a new request to be handled. If we have
2.74 frystyk 561: ** more than MaxActive connections already then return NO.
2.67 frystyk 562: ** Returns YES if OK, else NO
2.37 frystyk 563: */
2.79.2.1 eric 564:
2.69 frystyk 565: PUBLIC BOOL HTNet_newServer (HTRequest * request, HTNet * net, char * access)
2.37 frystyk 566: {
567: HTProtocol * protocol;
2.67 frystyk 568: HTTransport * tp = NULL; /* added JTD:5/28/96 */
2.79.2.1 eric 569: HTProtCallback * cbf;
2.37 frystyk 570: if (!request) return NO;
571:
572: /* Find a protocol object for this access scheme */
2.46 frystyk 573: protocol = HTProtocol_find(request, access);
2.67 frystyk 574:
575: /* added - JTD:5/28/96 */
576: /* Find a transport object for this protocol */
577: tp = HTTransport_find(request, HTProtocol_transport(protocol));
578: if (tp == NULL) {
2.74 frystyk 579: if (CORE_TRACE) HTTrace("Net Object.. NO TRANSPORT OBJECT\n");
2.67 frystyk 580: return NO;
581: }
582: /* end of additions - JTD:5/28/96 */
583:
2.69 frystyk 584: /* Fill out the net object and bind it to the request object */
2.74 frystyk 585: net->preemptive = (HTProtocol_preemptive(protocol) || HTRequest_preemptive(request));
2.79.2.1 eric 586: #if 0
2.69 frystyk 587: net->protocol = protocol;
588: net->transport = tp; /* added - JTD:5/28/96 */
2.79.2.1 eric 589: #endif
590: net->event.priority = HTRequest_priority(request);
2.69 frystyk 591: net->request = request;
592: HTRequest_setNet(request, net);
2.79.2.1 eric 593: if (!(cbf = HTProtocol_server(protocol))) {
2.74 frystyk 594: if (CORE_TRACE) HTTrace("Net Object.. NO CALL BACK FUNCTION!\n");
2.67 frystyk 595: return NO;
2.37 frystyk 596: }
2.74 frystyk 597:
598: /* Increase the number of retrys for this download */
599: HTRequest_addRetry(request);
2.37 frystyk 600:
601: /* Start the server request */
2.58 hallam 602: if (CORE_TRACE)
2.74 frystyk 603: HTTrace("Net Object.. starting SERVER request %p with net object %p\n", request, net);
2.79.2.1 eric 604: (*(cbf))(HTNet_socket(net), request);
2.37 frystyk 605: return YES;
606: }
2.36 frystyk 607:
2.30 frystyk 608: /* HTNet_new
609: ** ---------
2.23 frystyk 610: ** Create a new HTNet object as a new request to be handled. If we have
2.74 frystyk 611: ** more than MaxActive connections already then put this into the
2.23 frystyk 612: ** pending queue, else start the request by calling the call back
613: ** function registered with this access method.
614: ** Returns YES if OK, else NO
615: */
2.37 frystyk 616: PUBLIC BOOL HTNet_newClient (HTRequest * request)
2.23 frystyk 617: {
2.74 frystyk 618: HTParentAnchor * anchor = HTRequest_anchor(request);
2.59 frystyk 619: HTNet * me = NULL;
620: HTProtocol * protocol = NULL;
621: HTTransport * tp = NULL;
2.37 frystyk 622: char * physical = NULL;
2.74 frystyk 623: int status;
2.79.2.1 eric 624: HTProtCallback * cbf;
625:
2.27 frystyk 626: if (!request) return NO;
2.33 frystyk 627: /*
628: ** First we do all the "BEFORE" callbacks in order to see if we are to
629: ** continue with this request or not. If we receive a callback status
630: ** that is NOT HT_OK then jump directly to the after callbacks and return
631: */
2.79 frystyk 632: if ((status = HTNet_executeBeforeAll(request)) != HT_OK) {
633: HTNet_executeAfterAll(request, status);
2.33 frystyk 634: return YES;
635: }
636:
2.36 frystyk 637: /*
2.79 frystyk 638: ** If no translation was provided by the filters then use the anchor
2.36 frystyk 639: ** address directly
640: */
2.74 frystyk 641: if (!(physical = HTAnchor_physical(anchor))) {
642: char * addr = HTAnchor_address((HTAnchor *) anchor);
643: if (CORE_TRACE) HTTrace("Net Object.. Using default address\n");
644: HTAnchor_setPhysical(anchor, addr);
645: physical = HTAnchor_physical(anchor);
2.49 frystyk 646: HT_FREE(addr);
2.33 frystyk 647: }
648:
2.37 frystyk 649: /* Find a protocol object for this access scheme */
650: {
651: char * access = HTParse(physical, "", PARSE_ACCESS);
652: if ((protocol = HTProtocol_find(request, access)) == NULL) {
2.74 frystyk 653: if (CORE_TRACE) HTTrace("Net Object.. NO PROTOCOL OBJECT\n");
2.49 frystyk 654: HT_FREE(access);
2.37 frystyk 655: return NO;
656: }
2.49 frystyk 657: HT_FREE(access);
2.37 frystyk 658: }
2.59 frystyk 659:
660: /* Find a transport object for this protocol */
661: tp = HTTransport_find(request, HTProtocol_transport(protocol));
662: if (tp == NULL) {
2.74 frystyk 663: if (CORE_TRACE) HTTrace("Net Object.. NO TRANSPORT OBJECT\n");
2.59 frystyk 664: return NO;
665: }
666:
2.23 frystyk 667: /* Create new net object and bind it to the request object */
2.69 frystyk 668: if ((me = create_object()) == NULL) return NO;
2.74 frystyk 669: me->preemptive = (HTProtocol_preemptive(protocol) || HTRequest_preemptive(request));
2.79.2.1 eric 670: #if 0
2.69 frystyk 671: me->priority = HTRequest_priority(request);
2.79.2.1 eric 672: #endif
673: HTNet_setEventPriority(me, HTRequest_priority(request));
2.59 frystyk 674: me->protocol = protocol;
675: me->transport = tp;
2.69 frystyk 676: me->request = request;
677: HTRequest_setNet(request, me);
2.79.2.1 eric 678: if (!(cbf = HTProtocol_client(protocol))) {
2.74 frystyk 679: if (CORE_TRACE) HTTrace("Net Object.. NO CALL BACK FUNCTION!\n");
2.49 frystyk 680: HT_FREE(me);
2.23 frystyk 681: return NO;
682: }
2.74 frystyk 683:
684: /* Increase the number of retrys for this download */
685: HTRequest_addRetry(request);
2.23 frystyk 686:
687: /*
688: ** Check if we can start the request, else put it into pending queue
689: ** If so then call the call back function associated with the anchor.
690: ** We use the INVSOC as we don't have a valid socket yet!
691: */
2.74 frystyk 692: if (CORE_TRACE)
693: HTTrace("Net Object.. starting request %p (retry=%d) with net object %p\n",
694: request, HTRequest_retrys(request), me);
2.79.2.1 eric 695: (*(cbf))(INVSOC, request);
2.36 frystyk 696: return YES;
697: }
698:
2.23 frystyk 699: /* delete_object
700: ** -------------
701: ** Deletes an HTNet object
2.40 frystyk 702: ** Return YES if OK, else NO
2.15 frystyk 703: */
2.23 frystyk 704: PRIVATE BOOL delete_object (HTNet *net, int status)
2.15 frystyk 705: {
2.74 frystyk 706: if (CORE_TRACE) HTTrace("Net Object.. Remove object %p\n", net);
2.23 frystyk 707: if (net) {
708:
709: /* Close socket */
2.74 frystyk 710: /*
711: ** As we may have a socket available we check for whether
712: ** we can start any pending requests. We do this by asking for
713: ** pending Host objects. If none then use the current object
714: */
2.79.2.1 eric 715: /* (*net->input->isa->consumed)(net->input, net->header_length + net->bytes_read);
716: */
2.74 frystyk 717: HTHost_launchPending(net->host);
718:
719: /*
720: ** Break the link to the request and free the Net object
721: */
722: HTRequest_setNet(net->request, NULL);
2.49 frystyk 723: HT_FREE(net);
2.23 frystyk 724: return status ? NO : YES;
725: }
726: return NO;
727: }
728:
2.74 frystyk 729: /*
730: ** Clears the contents of the Net object so that we can use it again.
731: */
732: PUBLIC BOOL HTNet_clear (HTNet * net)
733: {
734: if (net) {
2.79.2.1 eric 735: net->host->channel = NULL;
736: net->readStream = NULL;
737: net->bytesRead = 0;
738: net->bytesWritten = 0;
739: net->headerLength = 0;
740: /* net->tcpstate = TCP_CHANNEL; */
2.74 frystyk 741: return YES;
742: }
743: return NO;
744: }
745:
2.23 frystyk 746: /* HTNet_delete
747: ** ------------
748: ** Deletes the HTNet object from the list of active requests and calls
749: ** any registered call back functions IF not the status is HT_IGNORE.
750: ** This is used if we have internal requests that the app doesn't know
751: ** about. We also see if we have pending requests that can be started
752: ** up now when we have a socket free.
753: ** The callback functions are called in the reverse order of which they
754: ** were registered (last one first)
2.40 frystyk 755: ** Return YES if OK, else NO
2.23 frystyk 756: */
757: PUBLIC BOOL HTNet_delete (HTNet * net, int status)
758: {
2.58 hallam 759: if (CORE_TRACE)
2.74 frystyk 760: HTTrace("Net Object.. Delete %p and call AFTER filters\n", net);
761: if (net) {
762: HTRequest * request = net->request;
2.23 frystyk 763:
2.25 frystyk 764: /*
2.74 frystyk 765: ** If we have a premature close then recover the request. Otherwise
766: ** break the link to the Host object and continue deleting the net
767: ** object
2.25 frystyk 768: */
2.74 frystyk 769: if (net->host) {
770: if (status == HT_RECOVER_PIPE) {
771: if (CORE_TRACE) HTTrace("Net Object.. Recovering %p\n", net);
2.79.2.1 eric 772: HTChannel_setSemaphore(net->host->channel, 0);
2.74 frystyk 773: HTHost_clearChannel(net->host, HT_INTERRUPTED);
774: HTHost_setMode(net->host, HT_TP_SINGLE);
775: HTNet_clear(net);
2.58 hallam 776: if (CORE_TRACE)
2.74 frystyk 777: HTTrace("Net Object.. Restarting request %p (retry=%d) with net object %p\n",
778: request, HTRequest_retrys(request), net);
2.78 frystyk 779: #if 0
2.74 frystyk 780: HTHost_launchPending(net->host);
781: return YES;
2.78 frystyk 782: #else
783: return HTNet_start(net);
784: #endif
2.79.2.1 eric 785: }
786: HTHost_free(net->host, status);
787: HTHost_deleteNet(net->host, net);
2.74 frystyk 788: }
789:
790: /* Remove object from the table of Net Objects */
791: if (NetTable) {
792: HTList * list = NetTable[net->hash];
793: if (list) {
794: HTList_removeObject(list, (void *) net);
795: delete_object(net, status);
796: HTNetCount--;
2.23 frystyk 797: }
798: }
2.74 frystyk 799:
800: /* Call AFTER filters */
2.79 frystyk 801: HTNet_executeAfterAll(request, status);
2.74 frystyk 802: return YES;
2.23 frystyk 803: }
804: return NO;
805: }
806:
807: /* HTNet_deleteAll
808: ** ---------------
809: ** Deletes all HTNet object that might either be active or pending
2.74 frystyk 810: ** We DO NOT call the AFTER filters - A crude way of saying goodbye!
2.23 frystyk 811: */
812: PUBLIC BOOL HTNet_deleteAll (void)
813: {
2.58 hallam 814: if (CORE_TRACE)
2.74 frystyk 815: HTTrace("Net Object.. Remove all Net objects, NO filters\n");
816: if (NetTable) {
817: HTList * cur = NULL;
818: HTNet * pres = NULL;
819: int cnt;
820: for (cnt=0; cnt<HASH_SIZE; cnt++) {
821: if ((cur = NetTable[cnt])) {
822: while ((pres = (HTNet *) HTList_nextObject(cur)) != NULL)
823: delete_object(pres, HT_INTERRUPTED);
824: }
825: HTList_delete(NetTable[cnt]);
2.25 frystyk 826: }
2.74 frystyk 827: HT_FREE(NetTable);
828: HTNetCount = 0;
829: return YES;
2.25 frystyk 830: }
831: return NO;
832: }
833:
2.23 frystyk 834: /* HTNet_kill
835: ** ----------
836: ** Kill the request by calling the call back function with a request for
837: ** closing the connection. Does not remove the object. This is done by
838: ** HTNet_delete() function which is called by the load routine.
839: ** Returns OK if success, NO on error
840: */
2.74 frystyk 841: PUBLIC BOOL HTNet_kill (HTNet * net)
2.23 frystyk 842: {
2.79.2.1 eric 843: if (net && net->event.cbf) {
2.74 frystyk 844: if (CORE_TRACE) HTTrace("Net Object.. Killing %p\n", net);
2.79.2.1 eric 845: (*(net->event.cbf))(HTNet_socket(net), net->request, HTEvent_CLOSE);
2.74 frystyk 846: return YES;
2.23 frystyk 847: }
2.79.2.2! frystyk 848: if (CORE_TRACE) HTTrace("Net Object.. No object to kill\n");
2.23 frystyk 849: return NO;
850: }
851:
852: /* HTNet_killAll
853: ** -------------
2.74 frystyk 854: ** Kills all registered net objects by calling the call
2.23 frystyk 855: ** back function with a request for closing the connection. We do not
856: ** remove the HTNet object as it is done by HTNet_delete().
857: ** Returns OK if success, NO on error
858: */
859: PUBLIC BOOL HTNet_killAll (void)
860: {
2.74 frystyk 861: if (CORE_TRACE) HTTrace("Net Object.. Kill ALL Net objects!!!\n");
862: if (NetTable) {
863: HTList * cur = NULL;
864: HTNet * pres = NULL;
865: int cnt;
866: for (cnt=0; cnt<HASH_SIZE; cnt++) {
867: if ((cur = NetTable[cnt])) {
2.75 frystyk 868: while ((pres = (HTNet *) HTList_lastObject(cur)) != NULL)
2.74 frystyk 869: HTNet_kill(pres);
870: }
2.25 frystyk 871: }
2.74 frystyk 872: return YES;
2.25 frystyk 873: }
2.74 frystyk 874: if (CORE_TRACE) HTTrace("Net Object.. No objects to kill\n");
875: return NO;
2.23 frystyk 876: }
2.38 frystyk 877:
878: /* ------------------------------------------------------------------------- */
2.59 frystyk 879: /* Connection Specifics */
880: /* ------------------------------------------------------------------------- */
881:
2.74 frystyk 882: /* HTNet_priority
883: ** --------------
884: ** Get the current priority of the Net object
885: */
886: PUBLIC HTPriority HTNet_priority (HTNet * net)
887: {
2.79.2.1 eric 888: return (net ? net->event.priority : HT_PRIORITY_INV);
2.74 frystyk 889: }
890:
891: /* HTNet_setPriority
892: ** -----------------
893: ** Set the current priority of the Net object
894: ** This will change the priority next time the thread is blocked
895: */
896: PUBLIC BOOL HTNet_setPriority (HTNet * net, HTPriority priority)
897: {
898: if (net) {
2.79.2.1 eric 899: net->event.priority = priority;
2.74 frystyk 900: return YES;
901: }
902: return NO;
903: }
904:
2.59 frystyk 905: /* HTNet_Persistent
906: ** ----------------
907: ** Check whether the net object handles persistent connections
908: ** If we have a DNS entry then check that as well.
909: */
910: PUBLIC BOOL HTNet_persistent (HTNet * net)
911: {
912: return (net && HTHost_isPersistent(net->host));
913: }
914:
915: /* HTNet_persistent
916: ** ----------------
917: ** Set the net object to handle persistent connections
918: ** If we also have a DNS entry then update that as well
919: */
2.74 frystyk 920: PUBLIC BOOL HTNet_setPersistent (HTNet * net,
921: BOOL persistent,
922: HTTransportMode mode)
2.59 frystyk 923: {
924: if (net) {
2.79.2.1 eric 925: BOOL result = HTHost_setPersistent(net->host, persistent, mode);
2.74 frystyk 926: if (CORE_TRACE)
927: HTTrace("Net Object.. Persistent connection set %s %s\n",
928: persistent ? "ON" : "OFF",
929: result ? "succeeded" : "failed");
2.79.2.1 eric 930: return result;
2.59 frystyk 931: }
932: return NO;
933: }
934:
2.66 frystyk 935: /*
936: ** Context pointer to be used in context call back function
937: */
938: PUBLIC BOOL HTNet_setContext (HTNet * net, void * context)
939: {
940: if (net) {
941: net->context = context;
942: return YES;
943: }
944: return NO;
945: }
946:
947: PUBLIC void * HTNet_context (HTNet * net)
948: {
949: return net ? net->context : NULL;
950: }
2.38 frystyk 951:
952: /*
2.60 frystyk 953: ** Get and set the socket number
954: */
955: PUBLIC BOOL HTNet_setSocket (HTNet * net, SOCKET sockfd)
956: {
2.79.2.1 eric 957: if (net && net->host && net->host->channel) {
958: HTChannel_setSocket(net->host->channel, sockfd);
2.60 frystyk 959: return YES;
960: }
961: return NO;
962: }
963:
964: PUBLIC SOCKET HTNet_socket (HTNet * net)
965: {
2.79.2.1 eric 966: return (net && net->host && net->host->channel ? HTChannel_socket(net->host->channel) : INVSOC);
2.69 frystyk 967: }
968:
969: /*
970: ** Get and set the HTRequest object
971: */
972: PUBLIC BOOL HTNet_setRequest (HTNet * net, HTRequest * request)
973: {
974: if (net && request) {
975: net->request = request;
976: return YES;
977: }
978: return NO;
979: }
980:
981: PUBLIC HTRequest * HTNet_request (HTNet * net)
982: {
983: return (net ? net->request : NULL);
2.60 frystyk 984: }
985:
2.79.2.1 eric 986: #if 0
2.60 frystyk 987: /*
2.59 frystyk 988: ** Get and set the HTTransport object
2.38 frystyk 989: */
2.79.2.1 eric 990: PUBLIC BOOL HTHost_setTransport (HTHost * me, HTTransport * tp)
2.38 frystyk 991: {
2.79.2.1 eric 992: if (me && tp) {
993: me->transport = tp;
2.38 frystyk 994: return YES;
995: }
996: return NO;
997: }
998:
2.79.2.1 eric 999: PUBLIC HTTransport * HTHost_transport (HTHost * me)
2.38 frystyk 1000: {
2.79.2.1 eric 1001: return (me ? me->transport : NULL);
2.38 frystyk 1002: }
2.79.2.1 eric 1003: #endif
2.38 frystyk 1004:
2.55 frystyk 1005: /*
2.59 frystyk 1006: ** Get and set the HTChannel object
2.55 frystyk 1007: */
2.59 frystyk 1008: PUBLIC BOOL HTNet_setChannel (HTNet * net, HTChannel * channel)
2.55 frystyk 1009: {
2.59 frystyk 1010: if (net && channel) {
2.79.2.1 eric 1011: net->host->channel = channel;
2.55 frystyk 1012: return YES;
1013: }
1014: return NO;
1015: }
1016:
2.59 frystyk 1017: PUBLIC HTChannel * HTNet_channel (HTNet * net)
2.55 frystyk 1018: {
2.79.2.1 eric 1019: return (net ? net->host->channel : NULL);
2.59 frystyk 1020: }
1021:
1022: /*
1023: ** Get and set the HTHost object
1024: */
1025: PUBLIC BOOL HTNet_setHost (HTNet * net, HTHost * host)
1026: {
1027: if (net && host) {
1028: net->host = host;
1029: return YES;
1030: }
1031: return NO;
1032: }
1033:
1034: PUBLIC HTHost * HTNet_host (HTNet * net)
1035: {
1036: return (net ? net->host : NULL);
1037: }
1038:
1039: /*
1040: ** Get and set the HTdns object
1041: */
1042: PUBLIC BOOL HTNet_setDns (HTNet * net, HTdns * dns)
1043: {
1044: if (net && dns) {
2.79.2.1 eric 1045: net->host->dns = dns;
2.59 frystyk 1046: return YES;
1047: }
1048: return NO;
1049: }
1050:
1051: PUBLIC HTdns * HTNet_dns (HTNet * net)
1052: {
2.79.2.1 eric 1053: return (net ? net->host->dns : NULL);
2.59 frystyk 1054: }
1055:
2.72 frystyk 1056: PUBLIC int HTNet_home (HTNet * net)
1057: {
1058: return (net ? net->home : 0);
1059: }
2.59 frystyk 1060:
1061: /*
1062: ** Create the output stream and bind it to the channel
1063: ** Please read the description in the HTIOStream module on the parameters
1064: */
2.79.2.1 eric 1065: PUBLIC HTOutputStream * HTNet_getOutput (HTNet * me, void * param, int mode)
2.59 frystyk 1066: {
2.79.2.1 eric 1067: if (me && me->host && me->host->channel && me->transport) {
1068: HTTransport * tp = me->transport;
1069: HTChannel * ch = me->host->channel;
2.79.2.2! frystyk 1070: HTOutputStream * output = (*tp->output_new)(me->host, ch, param, mode);
2.74 frystyk 1071: HTChannel_setOutput(ch, output);
2.59 frystyk 1072: return output;
1073: }
2.79.2.1 eric 1074: if (CORE_TRACE) HTTrace("Host Object.. Can't create output stream\n");
2.59 frystyk 1075: return NULL;
2.55 frystyk 1076: }
2.79.2.1 eric 1077:
1078: PUBLIC BOOL HTNet_setEventParam(HTNet * net, void * eventParam)
1079: {
1080: if (net) return HTEvent_setParam(&net->event, eventParam);
1081: return NO;
1082: }
1083:
1084: PUBLIC void* HTNet_eventParam(HTNet * net)
1085: {
1086: return net->event.param;
1087: }
1088:
1089: PUBLIC BOOL HTNet_setEventCallback(HTNet * net, HTEventCallback * cbf)
1090: {
1091: if (net) return HTEvent_setCallback(&net->event, cbf);
1092: return NO;
1093: }
1094:
1095: PUBLIC HTEventCallback * HTNet_eventCallback(HTNet * net)
1096: {
1097: return net->event.cbf;
1098: }
1099:
1100: PUBLIC BOOL HTNet_setEventPriority(HTNet * net, HTPriority priority)
1101: {
1102: if (net) return HTEvent_setPriority(&net->event, priority);
1103: return NO;
1104: }
1105:
1106: PUBLIC HTPriority HTNet_eventPriority(HTNet * net)
1107: {
1108: return net->event.priority;
1109: }
1110:
2.79.2.2! frystyk 1111: PUBLIC HTStream * HTNet_readStream(HTNet * net)
2.79.2.1 eric 1112: {
1113: if (!net) return NULL;
1114: return net->readStream;
1115: }
1116:
2.79.2.2! frystyk 1117: PUBLIC BOOL HTNet_setReadStream (HTNet * net, HTStream * stream)
! 1118: {
! 1119: if (net) {
! 1120: net->readStream = stream;
! 1121: return YES;
! 1122: }
! 1123: return NO;
! 1124: }
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