Annotation of libwww/Library/src/HTNet.c, revision 2.79.2.1
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.
2.79.2.1! eric 6: ** @(#) $Id: HTNet.c,v 2.79 1996/10/07 02:05:01 frystyk 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;
2.79.2.1! eric 490: /* me->tcpstate = TCP_BEGIN; */
2.74 frystyk 491:
492: /* Insert into hash table */
493: if (!NetTable) {
494: if ((NetTable = (HTList **) HT_CALLOC(HASH_SIZE, sizeof(HTList *))) == NULL)
495: HT_OUTOFMEM("create_object");
496: }
497: if (!NetTable[me->hash]) NetTable[me->hash] = HTList_new();
498: HTList_addObject(NetTable[me->hash], (void *) me);
499: HTNetCount++;
500: if (CORE_TRACE)
501: HTTrace("Net Object.. %p created with hash %d\n",me, me->hash);
502: return me;
503: }
504:
2.27 frystyk 505: /* HTNet_duplicate
506: ** ---------------
507: ** Creates a new HTNet object as a duplicate of the same request.
508: ** Returns YES if OK, else NO
509: ** BUG: We do not check if we have a socket free!
510: */
2.43 frystyk 511: PUBLIC HTNet * HTNet_dup (HTNet * src)
2.27 frystyk 512: {
2.74 frystyk 513: if (src) {
514: HTNet * me;
2.75 frystyk 515: int hash;
2.74 frystyk 516: if ((me = create_object()) == NULL) return NULL;
2.75 frystyk 517: hash = me->hash;
2.74 frystyk 518: if (CORE_TRACE) HTTrace("Net Object.. Duplicated %p\n", src);
519: memcpy((void *) me, src, sizeof(HTNet));
2.75 frystyk 520: me->hash = hash; /* Carry over hash entry */
2.74 frystyk 521: return me;
522: }
523: return NULL;
2.27 frystyk 524: }
525:
2.74 frystyk 526: /*
527: ** Start a Net obejct by calling the protocol module.
2.30 frystyk 528: */
2.74 frystyk 529: PUBLIC BOOL HTNet_start (HTNet * net)
2.30 frystyk 530: {
2.79.2.1! eric 531: if (net && net->event.cbf && net->request) {
2.74 frystyk 532: if (CORE_TRACE) HTTrace("Net Object.. Launching %p\n", net);
2.79.2.1! eric 533: /* HTEvent_unregister(HTNet_socket(net), (SockOps) FD_ALL); */
! 534: (*(net->event.cbf))(HTNet_socket(net), NULL, HTEvent_NONE);
2.30 frystyk 535: return YES;
536: }
537: return NO;
538: }
539:
2.37 frystyk 540: /* HTNet_new
541: ** ---------
542: ** This function creates a new HTNet object and assigns the socket number
543: ** to it. This is intended to be used when you are going to listen on a
544: ** socket using the HTDoListen() function in HTTCP.c. The function do NOT
545: ** call any of the callback functions.
546: ** Returns new object or NULL on error
547: */
2.69 frystyk 548: PUBLIC HTNet * HTNet_new (SOCKET sockfd, HTRequest * request)
2.37 frystyk 549: {
2.69 frystyk 550: if (sockfd != INVSOC) {
551: HTNet * me;
552: if ((me = create_object()) == NULL) return NULL;
553: me->preemptive = HTRequest_preemptive(request);
2.79.2.1! eric 554: HTNet_setEventPriority(me, HTRequest_priority(request));
2.69 frystyk 555: me->request = request;
556: HTRequest_setNet(request, me);
557: return me;
558: }
2.74 frystyk 559: if (CORE_TRACE) HTTrace("Net Object.. Can't create empty Net object!\n");
2.69 frystyk 560: return NULL;
2.37 frystyk 561: }
562:
2.67 frystyk 563: /* HTNet_newServer
564: ** ---------------
565: ** Create a new HTNet object as a new request to be handled. If we have
2.74 frystyk 566: ** more than MaxActive connections already then return NO.
2.67 frystyk 567: ** Returns YES if OK, else NO
2.37 frystyk 568: */
2.79.2.1! eric 569:
2.69 frystyk 570: PUBLIC BOOL HTNet_newServer (HTRequest * request, HTNet * net, char * access)
2.37 frystyk 571: {
572: HTProtocol * protocol;
2.67 frystyk 573: HTTransport * tp = NULL; /* added JTD:5/28/96 */
2.79.2.1! eric 574: HTProtCallback * cbf;
2.37 frystyk 575: if (!request) return NO;
576:
577: /* Find a protocol object for this access scheme */
2.46 frystyk 578: protocol = HTProtocol_find(request, access);
2.67 frystyk 579:
580: /* added - JTD:5/28/96 */
581: /* Find a transport object for this protocol */
582: tp = HTTransport_find(request, HTProtocol_transport(protocol));
583: if (tp == NULL) {
2.74 frystyk 584: if (CORE_TRACE) HTTrace("Net Object.. NO TRANSPORT OBJECT\n");
2.67 frystyk 585: return NO;
586: }
587: /* end of additions - JTD:5/28/96 */
588:
2.69 frystyk 589: /* Fill out the net object and bind it to the request object */
2.74 frystyk 590: net->preemptive = (HTProtocol_preemptive(protocol) || HTRequest_preemptive(request));
2.79.2.1! eric 591: #if 0
2.69 frystyk 592: net->protocol = protocol;
593: net->transport = tp; /* added - JTD:5/28/96 */
2.79.2.1! eric 594: #endif
! 595: net->event.priority = HTRequest_priority(request);
2.69 frystyk 596: net->request = request;
597: HTRequest_setNet(request, net);
2.79.2.1! eric 598: if (!(cbf = HTProtocol_server(protocol))) {
2.74 frystyk 599: if (CORE_TRACE) HTTrace("Net Object.. NO CALL BACK FUNCTION!\n");
2.67 frystyk 600: return NO;
2.37 frystyk 601: }
2.74 frystyk 602:
603: /* Increase the number of retrys for this download */
604: HTRequest_addRetry(request);
2.37 frystyk 605:
606: /* Start the server request */
2.58 hallam 607: if (CORE_TRACE)
2.74 frystyk 608: HTTrace("Net Object.. starting SERVER request %p with net object %p\n", request, net);
2.79.2.1! eric 609: (*(cbf))(HTNet_socket(net), request);
2.37 frystyk 610: return YES;
611: }
2.36 frystyk 612:
2.30 frystyk 613: /* HTNet_new
614: ** ---------
2.23 frystyk 615: ** Create a new HTNet object as a new request to be handled. If we have
2.74 frystyk 616: ** more than MaxActive connections already then put this into the
2.23 frystyk 617: ** pending queue, else start the request by calling the call back
618: ** function registered with this access method.
619: ** Returns YES if OK, else NO
620: */
2.37 frystyk 621: PUBLIC BOOL HTNet_newClient (HTRequest * request)
2.23 frystyk 622: {
2.74 frystyk 623: HTParentAnchor * anchor = HTRequest_anchor(request);
2.59 frystyk 624: HTNet * me = NULL;
625: HTProtocol * protocol = NULL;
626: HTTransport * tp = NULL;
2.37 frystyk 627: char * physical = NULL;
2.74 frystyk 628: int status;
2.79.2.1! eric 629: HTProtCallback * cbf;
! 630:
2.27 frystyk 631: if (!request) return NO;
2.33 frystyk 632: /*
633: ** First we do all the "BEFORE" callbacks in order to see if we are to
634: ** continue with this request or not. If we receive a callback status
635: ** that is NOT HT_OK then jump directly to the after callbacks and return
636: */
2.79 frystyk 637: if ((status = HTNet_executeBeforeAll(request)) != HT_OK) {
638: HTNet_executeAfterAll(request, status);
2.33 frystyk 639: return YES;
640: }
641:
2.36 frystyk 642: /*
2.79 frystyk 643: ** If no translation was provided by the filters then use the anchor
2.36 frystyk 644: ** address directly
645: */
2.74 frystyk 646: if (!(physical = HTAnchor_physical(anchor))) {
647: char * addr = HTAnchor_address((HTAnchor *) anchor);
648: if (CORE_TRACE) HTTrace("Net Object.. Using default address\n");
649: HTAnchor_setPhysical(anchor, addr);
650: physical = HTAnchor_physical(anchor);
2.49 frystyk 651: HT_FREE(addr);
2.33 frystyk 652: }
653:
2.37 frystyk 654: /* Find a protocol object for this access scheme */
655: {
656: char * access = HTParse(physical, "", PARSE_ACCESS);
657: if ((protocol = HTProtocol_find(request, access)) == NULL) {
2.74 frystyk 658: if (CORE_TRACE) HTTrace("Net Object.. NO PROTOCOL OBJECT\n");
2.49 frystyk 659: HT_FREE(access);
2.37 frystyk 660: return NO;
661: }
2.49 frystyk 662: HT_FREE(access);
2.37 frystyk 663: }
2.59 frystyk 664:
665: /* Find a transport object for this protocol */
666: tp = HTTransport_find(request, HTProtocol_transport(protocol));
667: if (tp == NULL) {
2.74 frystyk 668: if (CORE_TRACE) HTTrace("Net Object.. NO TRANSPORT OBJECT\n");
2.59 frystyk 669: return NO;
670: }
671:
2.23 frystyk 672: /* Create new net object and bind it to the request object */
2.69 frystyk 673: if ((me = create_object()) == NULL) return NO;
2.74 frystyk 674: me->preemptive = (HTProtocol_preemptive(protocol) || HTRequest_preemptive(request));
2.79.2.1! eric 675: #if 0
2.69 frystyk 676: me->priority = HTRequest_priority(request);
2.79.2.1! eric 677: #endif
! 678: HTNet_setEventPriority(me, HTRequest_priority(request));
2.59 frystyk 679: me->protocol = protocol;
680: me->transport = tp;
2.69 frystyk 681: me->request = request;
682: HTRequest_setNet(request, me);
2.79.2.1! eric 683: if (!(cbf = HTProtocol_client(protocol))) {
2.74 frystyk 684: if (CORE_TRACE) HTTrace("Net Object.. NO CALL BACK FUNCTION!\n");
2.49 frystyk 685: HT_FREE(me);
2.23 frystyk 686: return NO;
687: }
2.74 frystyk 688:
689: /* Increase the number of retrys for this download */
690: HTRequest_addRetry(request);
2.23 frystyk 691:
692: /*
693: ** Check if we can start the request, else put it into pending queue
694: ** If so then call the call back function associated with the anchor.
695: ** We use the INVSOC as we don't have a valid socket yet!
696: */
2.74 frystyk 697: if (CORE_TRACE)
698: HTTrace("Net Object.. starting request %p (retry=%d) with net object %p\n",
699: request, HTRequest_retrys(request), me);
2.79.2.1! eric 700: (*(cbf))(INVSOC, request);
2.36 frystyk 701: return YES;
702: }
703:
2.23 frystyk 704: /* delete_object
705: ** -------------
706: ** Deletes an HTNet object
2.40 frystyk 707: ** Return YES if OK, else NO
2.15 frystyk 708: */
2.23 frystyk 709: PRIVATE BOOL delete_object (HTNet *net, int status)
2.15 frystyk 710: {
2.74 frystyk 711: if (CORE_TRACE) HTTrace("Net Object.. Remove object %p\n", net);
2.23 frystyk 712: if (net) {
713:
714: /* Close socket */
2.74 frystyk 715: /*
716: ** As we may have a socket available we check for whether
717: ** we can start any pending requests. We do this by asking for
718: ** pending Host objects. If none then use the current object
719: */
2.79.2.1! eric 720: /* (*net->input->isa->consumed)(net->input, net->header_length + net->bytes_read);
! 721: */
2.74 frystyk 722: HTHost_launchPending(net->host);
723:
724: /*
725: ** Break the link to the request and free the Net object
726: */
727: HTRequest_setNet(net->request, NULL);
2.49 frystyk 728: HT_FREE(net);
2.23 frystyk 729: return status ? NO : YES;
730: }
731: return NO;
732: }
733:
2.74 frystyk 734: /*
735: ** Clears the contents of the Net object so that we can use it again.
736: */
737: PUBLIC BOOL HTNet_clear (HTNet * net)
738: {
739: if (net) {
2.79.2.1! eric 740: net->host->channel = NULL;
! 741: net->readStream = NULL;
! 742: net->bytesRead = 0;
! 743: net->bytesWritten = 0;
! 744: net->headerLength = 0;
! 745: /* net->tcpstate = TCP_CHANNEL; */
2.74 frystyk 746: return YES;
747: }
748: return NO;
749: }
750:
2.23 frystyk 751: /* HTNet_delete
752: ** ------------
753: ** Deletes the HTNet object from the list of active requests and calls
754: ** any registered call back functions IF not the status is HT_IGNORE.
755: ** This is used if we have internal requests that the app doesn't know
756: ** about. We also see if we have pending requests that can be started
757: ** up now when we have a socket free.
758: ** The callback functions are called in the reverse order of which they
759: ** were registered (last one first)
2.40 frystyk 760: ** Return YES if OK, else NO
2.23 frystyk 761: */
762: PUBLIC BOOL HTNet_delete (HTNet * net, int status)
763: {
2.58 hallam 764: if (CORE_TRACE)
2.74 frystyk 765: HTTrace("Net Object.. Delete %p and call AFTER filters\n", net);
766: if (net) {
767: HTRequest * request = net->request;
2.23 frystyk 768:
2.25 frystyk 769: /*
2.74 frystyk 770: ** If we have a premature close then recover the request. Otherwise
771: ** break the link to the Host object and continue deleting the net
772: ** object
2.25 frystyk 773: */
2.74 frystyk 774: if (net->host) {
775: if (status == HT_RECOVER_PIPE) {
776: if (CORE_TRACE) HTTrace("Net Object.. Recovering %p\n", net);
2.79.2.1! eric 777: HTChannel_setSemaphore(net->host->channel, 0);
2.74 frystyk 778: HTHost_clearChannel(net->host, HT_INTERRUPTED);
779: HTHost_setMode(net->host, HT_TP_SINGLE);
780: HTNet_clear(net);
2.58 hallam 781: if (CORE_TRACE)
2.74 frystyk 782: HTTrace("Net Object.. Restarting request %p (retry=%d) with net object %p\n",
783: request, HTRequest_retrys(request), net);
2.78 frystyk 784: #if 0
2.74 frystyk 785: HTHost_launchPending(net->host);
786: return YES;
2.78 frystyk 787: #else
788: return HTNet_start(net);
789: #endif
2.79.2.1! eric 790: }
! 791: HTHost_free(net->host, status);
! 792: HTHost_deleteNet(net->host, net);
2.74 frystyk 793: }
794:
795: /* Remove object from the table of Net Objects */
796: if (NetTable) {
797: HTList * list = NetTable[net->hash];
798: if (list) {
799: HTList_removeObject(list, (void *) net);
800: delete_object(net, status);
801: HTNetCount--;
2.23 frystyk 802: }
803: }
2.74 frystyk 804:
805: /* Call AFTER filters */
2.79 frystyk 806: HTNet_executeAfterAll(request, status);
2.74 frystyk 807: return YES;
2.23 frystyk 808: }
809: return NO;
810: }
811:
812: /* HTNet_deleteAll
813: ** ---------------
814: ** Deletes all HTNet object that might either be active or pending
2.74 frystyk 815: ** We DO NOT call the AFTER filters - A crude way of saying goodbye!
2.23 frystyk 816: */
817: PUBLIC BOOL HTNet_deleteAll (void)
818: {
2.58 hallam 819: if (CORE_TRACE)
2.74 frystyk 820: HTTrace("Net Object.. Remove all Net objects, NO filters\n");
821: if (NetTable) {
822: HTList * cur = NULL;
823: HTNet * pres = NULL;
824: int cnt;
825: for (cnt=0; cnt<HASH_SIZE; cnt++) {
826: if ((cur = NetTable[cnt])) {
827: while ((pres = (HTNet *) HTList_nextObject(cur)) != NULL)
828: delete_object(pres, HT_INTERRUPTED);
829: }
830: HTList_delete(NetTable[cnt]);
2.25 frystyk 831: }
2.74 frystyk 832: HT_FREE(NetTable);
833: HTNetCount = 0;
834: return YES;
2.25 frystyk 835: }
836: return NO;
837: }
838:
2.23 frystyk 839: /* HTNet_kill
840: ** ----------
841: ** Kill the request by calling the call back function with a request for
842: ** closing the connection. Does not remove the object. This is done by
843: ** HTNet_delete() function which is called by the load routine.
844: ** Returns OK if success, NO on error
845: */
2.74 frystyk 846: PUBLIC BOOL HTNet_kill (HTNet * net)
2.23 frystyk 847: {
2.79.2.1! eric 848: if (net && net->event.cbf) {
2.74 frystyk 849: if (CORE_TRACE) HTTrace("Net Object.. Killing %p\n", net);
2.79.2.1! eric 850: (*(net->event.cbf))(HTNet_socket(net), net->request, HTEvent_CLOSE);
2.74 frystyk 851: return YES;
2.23 frystyk 852: }
2.74 frystyk 853: if (CORE_TRACE) HTTrace("Net Object.. No object to kill\n", net);
2.23 frystyk 854: return NO;
855: }
856:
857: /* HTNet_killAll
858: ** -------------
2.74 frystyk 859: ** Kills all registered net objects by calling the call
2.23 frystyk 860: ** back function with a request for closing the connection. We do not
861: ** remove the HTNet object as it is done by HTNet_delete().
862: ** Returns OK if success, NO on error
863: */
864: PUBLIC BOOL HTNet_killAll (void)
865: {
2.74 frystyk 866: if (CORE_TRACE) HTTrace("Net Object.. Kill ALL Net objects!!!\n");
867: if (NetTable) {
868: HTList * cur = NULL;
869: HTNet * pres = NULL;
870: int cnt;
871: for (cnt=0; cnt<HASH_SIZE; cnt++) {
872: if ((cur = NetTable[cnt])) {
2.75 frystyk 873: while ((pres = (HTNet *) HTList_lastObject(cur)) != NULL)
2.74 frystyk 874: HTNet_kill(pres);
875: }
2.25 frystyk 876: }
2.74 frystyk 877: return YES;
2.25 frystyk 878: }
2.74 frystyk 879: if (CORE_TRACE) HTTrace("Net Object.. No objects to kill\n");
880: return NO;
2.23 frystyk 881: }
2.38 frystyk 882:
883: /* ------------------------------------------------------------------------- */
2.59 frystyk 884: /* Connection Specifics */
885: /* ------------------------------------------------------------------------- */
886:
2.74 frystyk 887: /* HTNet_priority
888: ** --------------
889: ** Get the current priority of the Net object
890: */
891: PUBLIC HTPriority HTNet_priority (HTNet * net)
892: {
2.79.2.1! eric 893: return (net ? net->event.priority : HT_PRIORITY_INV);
2.74 frystyk 894: }
895:
896: /* HTNet_setPriority
897: ** -----------------
898: ** Set the current priority of the Net object
899: ** This will change the priority next time the thread is blocked
900: */
901: PUBLIC BOOL HTNet_setPriority (HTNet * net, HTPriority priority)
902: {
903: if (net) {
2.79.2.1! eric 904: net->event.priority = priority;
2.74 frystyk 905: return YES;
906: }
907: return NO;
908: }
909:
2.59 frystyk 910: /* HTNet_Persistent
911: ** ----------------
912: ** Check whether the net object handles persistent connections
913: ** If we have a DNS entry then check that as well.
914: */
915: PUBLIC BOOL HTNet_persistent (HTNet * net)
916: {
917: return (net && HTHost_isPersistent(net->host));
918: }
919:
920: /* HTNet_persistent
921: ** ----------------
922: ** Set the net object to handle persistent connections
923: ** If we also have a DNS entry then update that as well
924: */
2.74 frystyk 925: PUBLIC BOOL HTNet_setPersistent (HTNet * net,
926: BOOL persistent,
927: HTTransportMode mode)
2.59 frystyk 928: {
929: if (net) {
2.79.2.1! eric 930: BOOL result = HTHost_setPersistent(net->host, persistent, mode);
2.74 frystyk 931: if (CORE_TRACE)
932: HTTrace("Net Object.. Persistent connection set %s %s\n",
933: persistent ? "ON" : "OFF",
934: result ? "succeeded" : "failed");
2.79.2.1! eric 935: return result;
2.59 frystyk 936: }
937: return NO;
938: }
939:
2.66 frystyk 940: /*
941: ** Context pointer to be used in context call back function
942: */
943: PUBLIC BOOL HTNet_setContext (HTNet * net, void * context)
944: {
945: if (net) {
946: net->context = context;
947: return YES;
948: }
949: return NO;
950: }
951:
952: PUBLIC void * HTNet_context (HTNet * net)
953: {
954: return net ? net->context : NULL;
955: }
2.38 frystyk 956:
957: /*
2.60 frystyk 958: ** Get and set the socket number
959: */
960: PUBLIC BOOL HTNet_setSocket (HTNet * net, SOCKET sockfd)
961: {
2.79.2.1! eric 962: if (net && net->host && net->host->channel) {
! 963: HTChannel_setSocket(net->host->channel, sockfd);
2.60 frystyk 964: return YES;
965: }
966: return NO;
967: }
968:
969: PUBLIC SOCKET HTNet_socket (HTNet * net)
970: {
2.79.2.1! eric 971: return (net && net->host && net->host->channel ? HTChannel_socket(net->host->channel) : INVSOC);
2.69 frystyk 972: }
973:
974: /*
975: ** Get and set the HTRequest object
976: */
977: PUBLIC BOOL HTNet_setRequest (HTNet * net, HTRequest * request)
978: {
979: if (net && request) {
980: net->request = request;
981: return YES;
982: }
983: return NO;
984: }
985:
986: PUBLIC HTRequest * HTNet_request (HTNet * net)
987: {
988: return (net ? net->request : NULL);
2.60 frystyk 989: }
990:
2.79.2.1! eric 991: #if 0
2.60 frystyk 992: /*
2.59 frystyk 993: ** Get and set the HTTransport object
2.38 frystyk 994: */
2.79.2.1! eric 995: PUBLIC BOOL HTHost_setTransport (HTHost * me, HTTransport * tp)
2.38 frystyk 996: {
2.79.2.1! eric 997: if (me && tp) {
! 998: me->transport = tp;
2.38 frystyk 999: return YES;
1000: }
1001: return NO;
1002: }
1003:
2.79.2.1! eric 1004: PUBLIC HTTransport * HTHost_transport (HTHost * me)
2.38 frystyk 1005: {
2.79.2.1! eric 1006: return (me ? me->transport : NULL);
2.38 frystyk 1007: }
2.79.2.1! eric 1008: #endif
2.38 frystyk 1009:
2.55 frystyk 1010: /*
2.59 frystyk 1011: ** Get and set the HTChannel object
2.55 frystyk 1012: */
2.59 frystyk 1013: PUBLIC BOOL HTNet_setChannel (HTNet * net, HTChannel * channel)
2.55 frystyk 1014: {
2.59 frystyk 1015: if (net && channel) {
2.79.2.1! eric 1016: net->host->channel = channel;
2.55 frystyk 1017: return YES;
1018: }
1019: return NO;
1020: }
1021:
2.59 frystyk 1022: PUBLIC HTChannel * HTNet_channel (HTNet * net)
2.55 frystyk 1023: {
2.79.2.1! eric 1024: return (net ? net->host->channel : NULL);
2.59 frystyk 1025: }
1026:
1027: /*
1028: ** Get and set the HTHost object
1029: */
1030: PUBLIC BOOL HTNet_setHost (HTNet * net, HTHost * host)
1031: {
1032: if (net && host) {
1033: net->host = host;
1034: return YES;
1035: }
1036: return NO;
1037: }
1038:
1039: PUBLIC HTHost * HTNet_host (HTNet * net)
1040: {
1041: return (net ? net->host : NULL);
1042: }
1043:
1044: /*
1045: ** Get and set the HTdns object
1046: */
1047: PUBLIC BOOL HTNet_setDns (HTNet * net, HTdns * dns)
1048: {
1049: if (net && dns) {
2.79.2.1! eric 1050: net->host->dns = dns;
2.59 frystyk 1051: return YES;
1052: }
1053: return NO;
1054: }
1055:
1056: PUBLIC HTdns * HTNet_dns (HTNet * net)
1057: {
2.79.2.1! eric 1058: return (net ? net->host->dns : NULL);
2.59 frystyk 1059: }
1060:
2.72 frystyk 1061: PUBLIC int HTNet_home (HTNet * net)
1062: {
1063: return (net ? net->home : 0);
1064: }
2.59 frystyk 1065:
1066: /*
1067: ** Create the output stream and bind it to the channel
1068: ** Please read the description in the HTIOStream module on the parameters
1069: */
2.79.2.1! eric 1070: PUBLIC HTOutputStream * HTNet_getOutput (HTNet * me, void * param, int mode)
2.59 frystyk 1071: {
2.79.2.1! eric 1072: if (me && me->host && me->host->channel && me->transport) {
! 1073: HTTransport * tp = me->transport;
! 1074: HTChannel * ch = me->host->channel;
! 1075: HTOutputStream * output = (*tp->output_new)(me, ch, param, mode);
2.74 frystyk 1076: HTChannel_setOutput(ch, output);
2.59 frystyk 1077: return output;
1078: }
2.79.2.1! eric 1079: if (CORE_TRACE) HTTrace("Host Object.. Can't create output stream\n");
2.59 frystyk 1080: return NULL;
2.55 frystyk 1081: }
2.79.2.1! eric 1082:
! 1083: PUBLIC BOOL HTNet_setEventParam(HTNet * net, void * eventParam)
! 1084: {
! 1085: if (net) return HTEvent_setParam(&net->event, eventParam);
! 1086: return NO;
! 1087: }
! 1088:
! 1089: PUBLIC void* HTNet_eventParam(HTNet * net)
! 1090: {
! 1091: return net->event.param;
! 1092: }
! 1093:
! 1094: PUBLIC BOOL HTNet_setEventCallback(HTNet * net, HTEventCallback * cbf)
! 1095: {
! 1096: if (net) return HTEvent_setCallback(&net->event, cbf);
! 1097: return NO;
! 1098: }
! 1099:
! 1100: PUBLIC HTEventCallback * HTNet_eventCallback(HTNet * net)
! 1101: {
! 1102: return net->event.cbf;
! 1103: }
! 1104:
! 1105: PUBLIC BOOL HTNet_setEventPriority(HTNet * net, HTPriority priority)
! 1106: {
! 1107: if (net) return HTEvent_setPriority(&net->event, priority);
! 1108: return NO;
! 1109: }
! 1110:
! 1111: PUBLIC HTPriority HTNet_eventPriority(HTNet * net)
! 1112: {
! 1113: return net->event.priority;
! 1114: }
! 1115:
! 1116: PUBLIC HTStream * HTNet_getReadStream(HTNet * net)
! 1117: {
! 1118: if (!net) return NULL;
! 1119: return net->readStream;
! 1120: }
! 1121:
Webmaster
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to HTNet.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Public] / libwww / Library / src