Annotation of libwww/Library/src/HTTP.c, revision 1.164
1.74 frystyk 1: /* HTTP.c
2: ** MULTITHREADED IMPLEMENTATION OF HTTP CLIENT
1.2 timbl 3: **
1.84 frystyk 4: ** (c) COPYRIGHT MIT 1995.
1.74 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
1.164 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.163 1998/05/19 18:08:04 frystyk Exp $
1.74 frystyk 7: **
8: ** This module implments the HTTP protocol as a state machine
1.55 frystyk 9: **
10: ** History:
1.59 frystyk 11: ** < May 24 94 ?? Unknown - but obviously written
1.56 frystyk 12: ** May 24 94 HF Made reentrent and cleaned up a bit. Implemented
13: ** Forward, redirection, error handling and referer field
1.67 duns 14: ** 8 Jul 94 FM Insulate free() from _free structure element.
1.71 frystyk 15: ** Jul 94 HFN Written on top of HTTP.c, Henrik Frystyk
1.55 frystyk 16: **
1.1 timbl 17: */
18:
1.78 frystyk 19: /* Library include files */
1.161 frystyk 20: #include "wwwsys.h"
1.123 frystyk 21: #include "WWWUtil.h"
22: #include "WWWCore.h"
23: #include "WWWMIME.h"
24: #include "WWWStream.h"
1.125 frystyk 25: #include "WWWTrans.h"
1.94 frystyk 26: #include "HTReqMan.h"
1.109 frystyk 27: #include "HTTPUtil.h"
1.80 frystyk 28: #include "HTTPReq.h"
1.55 frystyk 29: #include "HTTP.h" /* Implements */
30:
31: /* Macros and other defines */
1.94 frystyk 32: #ifndef HTTP_PORT
33: #define HTTP_PORT 80 /* Allocated to http by Jon Postel/ISI 24-Jan-92 */
34: #endif
35:
1.71 frystyk 36: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
37: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
38: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
39: #define FREE_TARGET (*me->target->isa->_free)(me->target)
1.74 frystyk 40: #define ABORT_TARGET (*me->target->isa->abort)(me->target, e)
1.2 timbl 41:
1.140 frystyk 42: #define HTTP_DUMP
43: #ifdef HTTP_DUMP
1.147 frystyk 44: #define HTTP_OUTPUT "w3chttp.out"
1.162 frystyk 45: PRIVATE FILE * htfp = NULL;
1.140 frystyk 46: #endif
1.139 frystyk 47:
1.59 frystyk 48: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 49:
50: /* Final states have negative value */
1.59 frystyk 51: typedef enum _HTTPState {
1.141 frystyk 52: HTTP_RECOVER_PIPE = -3,
1.134 frystyk 53: HTTP_ERROR = -2,
54: HTTP_OK = -1,
1.71 frystyk 55: HTTP_BEGIN = 0,
1.144 frystyk 56: HTTP_NEED_STREAM,
1.141 frystyk 57: HTTP_CONNECTED
1.59 frystyk 58: } HTTPState;
1.55 frystyk 59:
1.94 frystyk 60: /* This is the context structure for the this module */
1.55 frystyk 61: typedef struct _http_info {
1.81 frystyk 62: HTTPState state; /* Current State of the connection */
63: HTTPState next; /* Next state */
1.134 frystyk 64: int result; /* Result to report to the after filter */
1.139 frystyk 65: BOOL lock; /* Block for writing */
1.141 frystyk 66: HTNet * net;
1.157 frystyk 67: HTRequest * request;
68: HTTimer * timer;
1.55 frystyk 69: } http_info;
70:
1.88 frystyk 71: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 72:
1.71 frystyk 73: struct _HTStream {
1.119 frystyk 74: const HTStreamClass * isa;
1.71 frystyk 75: HTStream * target;
1.157 frystyk 76: HTStream * info_target; /* For 100 codes */
1.71 frystyk 77: HTRequest * request;
78: http_info * http;
1.121 frystyk 79: HTEOLState state;
1.71 frystyk 80: BOOL transparent;
1.150 frystyk 81: BOOL cont;
1.81 frystyk 82: char * version; /* Should we save this? */
1.71 frystyk 83: int status;
1.81 frystyk 84: char * reason;
1.71 frystyk 85: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 86: int buflen;
1.146 frystyk 87: int startLen;/* buflen when put_block was called */
1.71 frystyk 88: };
1.21 luotonen 89:
1.123 frystyk 90: struct _HTInputStream {
91: const HTInputStreamClass * isa;
92: };
93:
1.147 frystyk 94: #ifdef HT_NO_PIPELINING
1.156 frystyk 95: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_11_NO_PIPELINING;
1.147 frystyk 96: #else
1.156 frystyk 97: #ifdef HT_MUX
98: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_11_MUX;
99: #else
100: #ifdef HT_FORCE_10
101: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_FORCE_10;
102: #else
103: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_11_PIPELINING;
104: #endif
105: #endif
1.147 frystyk 106: #endif
107:
1.71 frystyk 108: /* ------------------------------------------------------------------------- */
109: /* Help Functions */
110: /* ------------------------------------------------------------------------- */
1.21 luotonen 111:
1.94 frystyk 112: /* HTTPCleanup
113: ** -----------
1.55 frystyk 114: ** This function closes the connection and frees memory.
1.94 frystyk 115: ** Returns YES on OK, else NO
1.1 timbl 116: */
1.94 frystyk 117: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 118: {
1.126 frystyk 119: HTNet * net = HTRequest_net(req);
120: http_info * http = (http_info *) HTNet_context(net);
121: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 122:
1.144 frystyk 123: if (PROT_TRACE)
124: HTTrace("HTTP Clean.. Called with status %d, net %p\n", status, net);
125:
1.164 ! frystyk 126: if (status == HT_INTERRUPTED) {
! 127: HTAlertCallback * cbf = HTAlert_find(HT_PROG_INTERRUPT);
! 128: if (cbf) (*cbf)(req, HT_PROG_INTERRUPT,
! 129: HT_MSG_NULL, NULL, NULL, NULL);
! 130: }
! 131:
1.94 frystyk 132: /* Free stream with data TO network */
1.112 frystyk 133: if (HTRequest_isDestination(req))
134: HTRequest_removeDestination(req);
1.126 frystyk 135: else if (input) {
1.145 frystyk 136: if (status == HT_INTERRUPTED || status == HT_RECOVER_PIPE)
1.126 frystyk 137: (*input->isa->abort)(input, NULL);
1.94 frystyk 138: else
1.126 frystyk 139: (*input->isa->_free)(input);
140: HTRequest_setInputStream(req, NULL);
1.94 frystyk 141: }
1.88 frystyk 142:
1.144 frystyk 143: /*
1.157 frystyk 144: ** Remove if we have registered an upload function as a callback
145: */
146: if (http->timer) {
147: HTTimer_delete(http->timer);
148: http->timer = NULL;
149: }
150:
151: /*
1.144 frystyk 152: ** Remove the request object and our own context structure for http.
153: */
154: if (status != HT_RECOVER_PIPE) {
1.153 frystyk 155: HTNet_delete(net, status);
1.141 frystyk 156: HT_FREE(http);
157: }
1.94 frystyk 158: return YES;
1.55 frystyk 159: }
160:
1.71 frystyk 161: /*
1.130 frystyk 162: ** Informational 1xx codes are handled separately
1.136 frystyk 163: ** Returns YES if we should continue, NO if we should stop
1.55 frystyk 164: */
1.130 frystyk 165: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 166: {
1.136 frystyk 167: http_info * http = me->http;
1.71 frystyk 168: switch (me->status) {
169:
1.136 frystyk 170: case 100:
1.161 frystyk 171: #if 0
1.136 frystyk 172: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
173: me->reason, (int) strlen(me->reason),
174: "HTTPInformation");
1.161 frystyk 175: #endif
1.136 frystyk 176: return YES;
177: break;
178:
1.130 frystyk 179: case 101:
1.136 frystyk 180: /*
181: ** We consider 101 Switching as a final state and exit this request
182: */
1.130 frystyk 183: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 184: me->reason, (int) strlen(me->reason),
1.130 frystyk 185: "HTTPInformation");
1.136 frystyk 186: http->next = HTTP_OK;
187: http->result = HT_UPGRADE;
1.127 frystyk 188: break;
189:
1.130 frystyk 190: default:
1.136 frystyk 191: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
192: (void *) me->buffer, me->buflen, "HTTPNextState");
193: http->next = HTTP_ERROR;
194: http->result = HT_ERROR;
1.127 frystyk 195: break;
1.130 frystyk 196: }
1.136 frystyk 197: return NO;
1.130 frystyk 198: }
199:
1.158 frystyk 200:
201:
1.130 frystyk 202: /*
203: ** This is a big switch handling all HTTP return codes. It puts in any
204: ** appropiate error message and decides whether we should expect data
205: ** or not.
206: */
207: PRIVATE void HTTPNextState (HTStream * me)
208: {
1.134 frystyk 209: http_info * http = me->http;
1.158 frystyk 210: int error_class = me->status / 100;
211: switch (error_class) {
1.127 frystyk 212:
1.158 frystyk 213: case 0: /* 0.9 response */
214: case 2:
1.112 frystyk 215:
1.158 frystyk 216: switch (me->status) {
1.112 frystyk 217:
1.158 frystyk 218: case 201: /* Created */
219: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
220: me->reason, (int) strlen(me->reason),
221: "HTTPNextState");
222: http->next = HTTP_OK;
223: http->result = HT_CREATED;
224: break;
225:
226: case 202: /* Accepted */
227: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
228: me->reason, (int) strlen(me->reason),
229: "HTTPNextState");
230: http->next = HTTP_OK;
231: http->result = HT_ACCEPTED;
232: break;
233:
234: case 203: /* Non-authoritative information */
235: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
236: me->reason, (int) strlen(me->reason),
237: "HTTPNextState");
238: http->next = HTTP_OK;
239: http->result = HT_LOADED;
240: break;
241:
242: case 204: /* No Response */
243: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
244: me->reason, (int) strlen(me->reason),
245: "HTTPNextState");
246: http->next = HTTP_OK;
247: http->result = HT_NO_DATA;
248: break;
249:
250: case 205: /* Reset Content */
251: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
252: me->reason, (int) strlen(me->reason),
253: "HTTPNextState");
254: http->next = HTTP_OK;
255: http->result = HT_RESET_CONTENT;
256: break;
257:
258: case 206: /* Partial Content */
259: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
260: me->reason, (int) strlen(me->reason),
261: "HTTPNextState");
262: http->next = HTTP_OK;
263: http->result = HT_PARTIAL_CONTENT;
264: break;
265:
266: case 207: /* Partial Update OK */
267: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL_OK,
268: me->reason, (int) strlen(me->reason),
269: "HTTPNextState");
270: http->next = HTTP_OK;
271: http->result = HT_PARTIAL_CONTENT;
272: break;
273:
274: default:
275: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
276: me->reason, (int) strlen(me->reason),
277: "HTTPNextState");
278: http->next = HTTP_OK;
279: http->result = HT_LOADED;
280: break;
281: }
1.134 frystyk 282: break;
283:
1.158 frystyk 284: case 3:
1.134 frystyk 285:
1.158 frystyk 286: switch (me->status) {
1.78 frystyk 287:
1.158 frystyk 288: case 301: /* Moved */
289: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
290: me->reason, (int) strlen(me->reason),
291: "HTTPNextState");
292: http->next = HTTP_ERROR;
293: http->result = HT_PERM_REDIRECT;
294: break;
295:
296: case 302: /* Found */
297: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
298: me->reason, (int) strlen(me->reason),
299: "HTTPNextState");
300: http->next = HTTP_ERROR;
301: http->result = HT_FOUND;
302: break;
1.55 frystyk 303:
1.158 frystyk 304: case 303: /* Method */
305: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_METHOD,
306: me->reason, (int) strlen(me->reason),
307: "HTTPNextState");
308: http->next = HTTP_ERROR;
309: http->result = HT_SEE_OTHER;
310: break;
311:
312: case 304: /* Not Modified */
313: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
314: me->reason, (int) strlen(me->reason),
315: "HTTPNextState");
316: http->next = HTTP_OK;
317: http->result = HT_NOT_MODIFIED;
318: break;
1.134 frystyk 319:
1.158 frystyk 320: case 305: /* Use proxy */
321: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
322: me->reason, (int) strlen(me->reason),
323: "HTTPNextState");
324: http->next = HTTP_ERROR;
325: http->result = HT_USE_PROXY;
326: break;
1.55 frystyk 327:
1.152 frystyk 328: #if 0
1.158 frystyk 329: case 306: /* Use proxy */
330: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PROXY_REDIRECT,
331: me->reason, (int) strlen(me->reason),
332: "HTTPNextState");
333: http->next = HTTP_ERROR;
334: http->result = HT_USE_PROXY;
335: break;
1.152 frystyk 336: #endif
337:
1.158 frystyk 338: case 307: /* Use proxy */
339: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_TEMP_REDIRECT,
340: me->reason, (int) strlen(me->reason),
341: "HTTPNextState");
342: http->next = HTTP_ERROR;
343: http->result = HT_TEMP_REDIRECT;
344: break;
345:
346: default:
347: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
348: me->reason, (int) strlen(me->reason),
349: "HTTPNextState");
350: http->next = HTTP_OK;
351: http->result = HT_LOADED;
352: break;
353: }
354: break;
355:
356: case 4:
357:
358: switch (me->status) {
359: case 401:
360: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
361: me->reason, (int) strlen(me->reason), "HTTPNextState");
362: http->next = HTTP_ERROR;
363: http->result = HT_NO_ACCESS;
364: break;
1.152 frystyk 365:
1.158 frystyk 366: case 402: /* Payment required */
367: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
368: me->reason, (int) strlen(me->reason), "HTTPNextState");
369: http->next = HTTP_ERROR;
370: http->result = -402;
371: break;
1.71 frystyk 372:
1.158 frystyk 373: case 403: /* Forbidden */
374: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
375: me->reason, (int) strlen(me->reason), "HTTPNextState");
376: http->next = HTTP_ERROR;
377: http->result = HT_FORBIDDEN;
378: break;
1.55 frystyk 379:
1.158 frystyk 380: case 404: /* Not Found */
381: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
382: me->reason, (int) strlen(me->reason), "HTTPNextState");
383: http->next = HTTP_ERROR;
384: http->result = -404;
385: break;
1.55 frystyk 386:
1.158 frystyk 387: case 405: /* Not Allowed */
388: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
389: me->reason, (int) strlen(me->reason), "HTTPNextState");
390: http->next = HTTP_ERROR;
391: http->result = -405;
392: break;
393:
394: case 406: /* None Acceptable */
395: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
396: me->reason, (int) strlen(me->reason), "HTTPNextState");
397: http->next = HTTP_ERROR;
398: http->result = HT_NOT_ACCEPTABLE;
399: break;
400:
401: case 407: /* Proxy Authentication Required */
402: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
403: me->reason, (int) strlen(me->reason), "HTTPNextState");
404: http->next = HTTP_ERROR;
405: http->result = HT_NO_PROXY_ACCESS;
406: break;
407:
408: case 408: /* Request Timeout */
409: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
410: me->reason, (int) strlen(me->reason), "HTTPNextState");
411: http->next = HTTP_ERROR;
412: http->result = -408;
413: break;
414:
415: case 409: /* Conflict */
416: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
417: me->reason, (int) strlen(me->reason), "HTTPNextState");
418: http->next = HTTP_ERROR;
419: http->result = HT_CONFLICT;
420: break;
421:
422: case 410: /* Gone */
423: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
424: me->reason, (int) strlen(me->reason), "HTTPNextState");
425: http->next = HTTP_ERROR;
426: http->result = -410;
427: break;
428:
429: case 411: /* Length Required */
430: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
431: me->reason, (int) strlen(me->reason), "HTTPNextState");
432: http->next = HTTP_ERROR;
433: http->result = HT_LENGTH_REQUIRED;
434: break;
435:
436: case 412: /* Precondition failed */
437: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
438: me->reason, (int) strlen(me->reason), "HTTPNextState");
439: http->next = HTTP_ERROR;
440: http->result = -412;
441: break;
442:
443: case 413: /* Request entity too large */
444: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
445: me->reason, (int) strlen(me->reason), "HTTPNextState");
446: http->next = HTTP_ERROR;
447: http->result = -413;
448: break;
449:
450: case 414: /* Request-URI too long */
451: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
452: me->reason, (int) strlen(me->reason), "HTTPNextState");
453: http->next = HTTP_ERROR;
454: http->result = -414;
455: break;
456:
457: case 415: /* Unsupported */
458: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
459: me->reason, (int) strlen(me->reason), "HTTPNextState");
460: http->next = HTTP_ERROR;
461: http->result = -415;
462: break;
463:
464: case 416: /* Request Range not satisfiable */
465: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_RANGE,
466: me->reason, (int) strlen(me->reason), "HTTPNextState");
467: http->next = HTTP_ERROR;
468: http->result = -416;
469: break;
470:
471: case 417: /* Expectation Failed */
472: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_EXPECTATION_FAILED,
473: me->reason, (int) strlen(me->reason), "HTTPNextState");
474: http->next = HTTP_ERROR;
475: http->result = -417;
476: break;
477:
478: case 418: /* Reauthentication required */
479: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_REAUTH,
480: me->reason, (int) strlen(me->reason), "HTTPNextState");
481: http->next = HTTP_ERROR;
482: http->result = -418;
483: break;
484:
485: case 419: /* Proxy Reauthentication required */
486: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PROXY_REAUTH,
487: me->reason, (int) strlen(me->reason), "HTTPNextState");
488: http->next = HTTP_ERROR;
489: http->result = -419;
490: break;
491:
492: default:
493: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
494: me->reason, (int) strlen(me->reason), "HTTPNextState");
495: http->next = HTTP_ERROR;
496: http->result = -400;
497: break;
498: }
1.134 frystyk 499: break;
500:
1.158 frystyk 501: case 5:
1.134 frystyk 502:
1.158 frystyk 503: switch (me->status) {
504: case 501:
505: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
506: me->reason, (int) strlen(me->reason), "HTTPNextState");
507: http->next = HTTP_ERROR;
508: http->result = -501;
509: break;
510:
511: case 502:
512: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
513: me->reason, (int) strlen(me->reason), "HTTPNextState");
514: http->next = HTTP_ERROR;
515: http->result = -502;
516: break;
517:
518: case 503:
519: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
520: me->reason, (int) strlen(me->reason), "HTTPNextState");
521: http->next = HTTP_ERROR;
522:
523: /*
524: ** If Retry-After header is found then return HT_RETRY else HT_ERROR.
525: ** The caller may want to reissue the request at a later point in time.
526: */
527: {
528: HTResponse * response = HTRequest_response(me->request);
529: if (HTResponse_retryTime(response))
530: http->result = HT_RETRY;
531: else
532: http->result = -500;
533: }
534: break;
535:
536: case 504:
537: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
538: me->reason, (int) strlen(me->reason), "HTTPNextState");
539: http->next = HTTP_ERROR;
540: http->result = -504;
541: break;
542:
543: case 505: /* Unsupported protocol version */
544: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
545: me->reason, (int) strlen(me->reason), "HTTPNextState");
546: http->next = HTTP_ERROR;
547: http->result = HT_BAD_VERSION;
548: break;
549:
550: case 506: /* Partial update Not Implemented */
551: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NO_PARTIAL_UPDATE,
552: me->reason, (int) strlen(me->reason), "HTTPNextState");
553: http->next = HTTP_ERROR;
554: http->result = HT_BAD_VERSION;
555: break;
556:
557: default: /* bad number */
558: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
559: me->reason, (int) strlen(me->reason), "HTTPNextState");
560: http->next = HTTP_ERROR;
561: http->result = -500;
562: break;
1.140 frystyk 563: }
1.78 frystyk 564: break;
565:
1.158 frystyk 566: default:
1.104 frystyk 567: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.158 frystyk 568: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 frystyk 569: http->next = HTTP_ERROR;
1.155 frystyk 570: http->result = -(me->status);
1.71 frystyk 571: break;
1.55 frystyk 572: }
573: }
574:
1.71 frystyk 575: /* ------------------------------------------------------------------------- */
576: /* HTTP Status Line Stream */
577: /* ------------------------------------------------------------------------- */
1.55 frystyk 578:
1.71 frystyk 579: /*
1.141 frystyk 580: ** Analyze the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 581: ** then create a MIME-stream, else create a Guess stream to find out
582: ** what the 0.9 server is sending. We need to copy the buffer as we don't
583: ** know if we can modify the contents or not.
1.78 frystyk 584: **
585: ** Stream handling is a function of the status code returned from the
586: ** server:
587: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 588: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 589: **
590: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 591: */
1.157 frystyk 592: PRIVATE int stream_pipe (HTStream * me, int length)
1.56 frystyk 593: {
1.136 frystyk 594: HTRequest * request = me->request;
595: HTNet * net = HTRequest_net(request);
1.123 frystyk 596: HTHost * host = HTNet_host(net);
1.141 frystyk 597:
1.153 frystyk 598: #if 0
599: {
600: char * uri = HTAnchor_address((HTAnchor *) HTRequest_anchor(request));
601: fprintf(stderr, "HTTP header: %s for '%s'\n", me->buffer, uri);
602: HT_FREE(uri);
603: }
604: #endif
605:
1.132 frystyk 606: /*
607: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
608: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
1.141 frystyk 609:
1.132 frystyk 610: */
611: if (strncasecomp(me->buffer, "http", 4)) {
1.80 frystyk 612: int status;
1.136 frystyk 613: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 614: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 615: me->target = HTStreamStack(WWW_UNKNOWN,
616: HTRequest_outputFormat(request),
617: HTRequest_outputStream(request),
618: request, NO);
1.134 frystyk 619: me->http->next = HTTP_OK;
1.80 frystyk 620: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
621: me->transparent = YES;
1.123 frystyk 622: HTHost_setVersion(host, HTTP_09);
1.157 frystyk 623: if (length > 0) HTHost_setConsumed(host, length);
1.80 frystyk 624: return status;
625: } else {
1.140 frystyk 626: HTResponse * response = HTRequest_response(request);
1.155 frystyk 627: char * ptr = me->buffer+5; /* Skip the HTTP part */
628: char * vptr = NULL;
629: int major = 0;
630: int minor = 0;
631: me->version = vptr = HTNextField(&ptr);
632: if (vptr) {
633: major = (int) strtol(me->version, &vptr, 10);
634: if (vptr++) minor = strtol(vptr, NULL, 10);
635: }
1.95 frystyk 636:
1.130 frystyk 637: /* Here we want to find out when to use persistent connection */
1.155 frystyk 638: if (major > 1) {
639: if (PROT_TRACE)HTTrace("HTTP Status. Major version number is %d\n", major);
640: me->target = HTErrorStream();
1.158 frystyk 641: me->status = 9999;
1.155 frystyk 642: HTTPNextState(me); /* Get next state */
1.158 frystyk 643: return HT_ERROR;
1.155 frystyk 644: } else if (minor <= 0) {
645: if (PROT_TRACE)HTTrace("HTTP Status. This is an HTTP/1.0 server\n");
1.128 frystyk 646: HTHost_setVersion(host, HTTP_10);
1.155 frystyk 647: } else { /* 1.x, x>0 family */
648: HTHost_setVersion(host, HTTP_11); /* Best we can do */
1.156 frystyk 649: if (ConnectionMode & HTTP_11_NO_PIPELINING) {
650: if (PROT_TRACE)
651: HTTrace("HTTP........ Mode is HTTP/1.1 with NO PIPELINING\n");
1.147 frystyk 652: HTNet_setPersistent(net, YES, HT_TP_SINGLE);
1.156 frystyk 653: } else if (ConnectionMode & HTTP_11_MUX) {
654: if (PROT_TRACE)
655: HTTrace("HTTP........ Mode is HTTP/1.1 with MUXING\n");
656: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE);
1.147 frystyk 657: } else if (ConnectionMode & HTTP_FORCE_10) {
658: if (PROT_TRACE) HTTrace("HTTP........ Mode is FORCE HTTP/1.0\n");
659: HTHost_setVersion(host, HTTP_10);
660: HTNet_setPersistent(net, NO, HT_TP_SINGLE);
661: } else
662: HTNet_setPersistent(net, YES, HT_TP_PIPELINE);
1.128 frystyk 663: }
1.95 frystyk 664:
1.81 frystyk 665: me->status = atoi(HTNextField(&ptr));
666: me->reason = ptr;
667: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
668: *ptr = '\0';
669: else if ((ptr = strchr(me->reason, '\n')) != NULL)
670: *ptr = '\0';
671:
1.130 frystyk 672: /*
673: ** If it is a 1xx code then find out what to do and return until we
674: ** get the next code. In the case of Upgrade we may not get back here
675: ** at all. If we are uploading an entity then continue doing that
676: */
677: if (me->status/100 == 1) {
1.136 frystyk 678: if (HTTPInformation(me) == YES) {
679: me->buflen = 0;
680: me->state = EOL_BEGIN;
1.157 frystyk 681: if (me->info_target) (*me->info_target->isa->_free)(me->info_target);
682: me->info_target = HTStreamStack(WWW_MIME_CONT,
683: HTRequest_debugFormat(request),
684: HTRequest_debugStream(request),
685: request, NO);
686: if (length > 0) HTHost_setConsumed(host, length);
687: return HT_OK;
1.103 frystyk 688: }
1.56 frystyk 689: }
1.133 frystyk 690:
691: /*
692: ** As we are getting fresh metainformation in the HTTP response,
693: ** we clear the old metainfomation in order not to mix it with the new
694: ** one. This is particularly important for the content-length and the
1.139 frystyk 695: ** like. The TRACE and OPTIONS method just adds to the current
696: ** metainformation so in that case we don't clear the anchor.
1.133 frystyk 697: */
1.136 frystyk 698: if (me->status==200 || me->status==203 || me->status==300) {
1.140 frystyk 699: /*
700: ** 200, 203 and 300 are all fully cacheable responses. No byte
701: ** ranges or anything else make life hard in this case.
702: */
1.148 frystyk 703: HTAnchor_clearHeader(HTRequest_anchor(request));
1.140 frystyk 704: HTResponse_setCachable(response, YES);
1.136 frystyk 705: me->target = HTStreamStack(WWW_MIME,
706: HTRequest_outputFormat(request),
707: HTRequest_outputStream(request),
708: request, NO);
1.140 frystyk 709: } else if (me->status==206) {
710: /*
711: ** We got a partial response and now we must check whether
712: ** we issued a cache If-Range request or it was a new
713: ** partial response which we don't have in cache. In the latter
714: ** case, we don't cache the object and in the former we append
715: ** the result to the already existing cache entry.
716: */
717: HTReload reload = HTRequest_reloadMode(request);
718: if (reload == HT_CACHE_RANGE_VALIDATE) {
719: HTResponse_setCachable(response, YES);
720: me->target = HTStreamStack(WWW_MIME_PART,
721: HTRequest_outputFormat(request),
722: HTRequest_outputStream(request),
723: request, NO);
724: } else {
1.149 frystyk 725: HTAnchor_clearHeader(HTRequest_anchor(request));
1.140 frystyk 726: me->target = HTStreamStack(WWW_MIME,
727: HTRequest_outputFormat(request),
728: HTRequest_outputStream(request),
729: request, NO);
730: }
1.139 frystyk 731: } else if (me->status==204 || me->status==304) {
1.140 frystyk 732: HTResponse_setCachable(response, YES);
1.136 frystyk 733: me->target = HTStreamStack(WWW_MIME_HEAD,
734: HTRequest_debugFormat(request),
735: HTRequest_debugStream(request),
736: request, NO);
737: } else if (HTRequest_debugStream(request)) {
738: me->target = HTStreamStack(WWW_MIME,
739: HTRequest_debugFormat(request),
740: HTRequest_debugStream(request),
741: request, NO);
742: } else {
1.140 frystyk 743: /*
744: ** We still need to parse the MIME part in order to find any
745: ** valuable meta information which is needed from the response.
746: */
1.136 frystyk 747: me->target = HTStreamStack(WWW_MIME,
748: HTRequest_debugFormat(request),
749: HTRequest_debugStream(request),
750: request, NO);
1.133 frystyk 751: }
1.56 frystyk 752: }
1.113 frystyk 753: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 754: HTTPNextState(me); /* Get next state */
1.80 frystyk 755: me->transparent = YES;
1.157 frystyk 756: if (length > 0) HTHost_setConsumed(HTNet_host(HTRequest_net(me->request)), length);
1.80 frystyk 757: return HT_OK;
1.71 frystyk 758: }
1.56 frystyk 759:
1.80 frystyk 760: /*
761: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
762: ** is found
763: */
1.119 frystyk 764: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 765: {
1.150 frystyk 766: int status = HT_OK;
1.153 frystyk 767: int length = l;
1.146 frystyk 768: me->startLen = me->buflen;
1.80 frystyk 769: while (!me->transparent && l-- > 0) {
1.157 frystyk 770: if (me->info_target) {
771:
772: /* Put data down the 1xx return code parser until we are done. */
773: status = (*me->info_target->isa->put_block)(me->info_target, b, l+1);
774: if (status != HT_CONTINUE) return status;
775:
776: /* Now free the info stream */
777: (*me->info_target->isa->_free)(me->info_target);
778: me->info_target = NULL;
779:
780: /* Update where we are in the stream */
781: l = HTHost_remainingRead(HTNet_host(HTRequest_net(me->request)));
1.163 frystyk 782: b += (length-l);
1.159 frystyk 783: length = l;
1.163 frystyk 784: if (l <= 0) break;
1.157 frystyk 785:
1.80 frystyk 786: } else {
787: *(me->buffer+me->buflen++) = *b;
788: if (me->state == EOL_FCR) {
789: if (*b == LF) { /* Line found */
1.157 frystyk 790: if ((status = stream_pipe(me, length-l)) != HT_OK) return status;
1.80 frystyk 791: } else {
792: me->state = EOL_BEGIN;
793: }
794: } else if (*b == CR) {
795: me->state = EOL_FCR;
796: } else if (*b == LF) {
1.157 frystyk 797: if ((status = stream_pipe(me, length-l)) != HT_OK) return status;
1.71 frystyk 798: } else {
1.80 frystyk 799: if (me->buflen >= MAX_STATUS_LEN) {
1.157 frystyk 800: if ((status = stream_pipe(me, length-l)) != HT_OK) return status;
1.80 frystyk 801: }
1.71 frystyk 802: }
1.80 frystyk 803: b++;
1.71 frystyk 804: }
1.56 frystyk 805: }
1.153 frystyk 806:
1.159 frystyk 807: if (!me->transparent && length != l)
808: HTHost_setConsumed(HTNet_host(HTRequest_net(me->request)), length-l);
809:
1.99 frystyk 810: if (l > 0) return PUTBLOCK(b, l);
1.150 frystyk 811: return status;
1.56 frystyk 812: }
813:
1.119 frystyk 814: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 815: {
1.80 frystyk 816: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 817: }
1.56 frystyk 818:
1.100 frystyk 819: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 820: {
1.80 frystyk 821: return HTTPStatus_put_block(me, &c, 1);
822: }
823:
1.100 frystyk 824: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 825: {
826: return (*me->target->isa->flush)(me->target);
1.71 frystyk 827: }
828:
1.100 frystyk 829: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 830: {
1.87 frystyk 831: int status = HT_OK;
832: if (me->target) {
833: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
834: return HT_WOULD_BLOCK;
835: }
1.115 frystyk 836: HT_FREE(me);
1.100 frystyk 837: return status;
1.71 frystyk 838: }
839:
1.104 frystyk 840: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 841: {
842: if (me->target)
1.74 frystyk 843: ABORT_TARGET;
1.115 frystyk 844: HT_FREE(me);
1.74 frystyk 845: if (PROT_TRACE)
1.116 eric 846: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 847: return HT_ERROR;
1.71 frystyk 848: }
849:
850: /* HTTPStatus Stream
851: ** -----------------
852: */
1.119 frystyk 853: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 854: {
855: "HTTPStatus",
1.80 frystyk 856: HTTPStatus_flush,
1.71 frystyk 857: HTTPStatus_free,
858: HTTPStatus_abort,
859: HTTPStatus_put_character,
860: HTTPStatus_put_string,
861: HTTPStatus_put_block
862: };
863:
1.113 frystyk 864: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
865: void * param,
866: HTFormat input_format,
867: HTFormat output_format,
868: HTStream * output_stream)
1.71 frystyk 869: {
1.115 frystyk 870: HTStream * me;
871: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
872: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 873: me->isa = &HTTPStatusClass;
1.113 frystyk 874: if (request) {
1.126 frystyk 875: HTNet * net = HTRequest_net(request);
1.125 frystyk 876: /* Get existing copy */
877: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 878: me->request = request;
879: me->http = http;
880: http->next = HTTP_ERROR;
881: me->state = EOL_BEGIN;
882: return me;
883: } else
884: return HTErrorStream();
1.71 frystyk 885: }
886:
887: /* ------------------------------------------------------------------------- */
888:
889: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 890: ** ==============================
891: **
892: ** Given a hypertext address, this routine loads a document.
893: **
894: ** On entry,
895: ** request This is the request structure
1.94 frystyk 896: ** returns HT_ERROR Error has occured in call back
897: ** HT_OK Call back was OK
1.55 frystyk 898: */
1.141 frystyk 899: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type);
900:
901: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request)
1.55 frystyk 902: {
903: http_info *http; /* Specific protocol information */
1.112 frystyk 904: HTParentAnchor *anchor = HTRequest_anchor(request);
1.141 frystyk 905: HTNet * net = HTRequest_net(request);
1.112 frystyk 906:
1.94 frystyk 907: /*
908: ** Initiate a new http structure and bind to request structure
909: ** This is actually state HTTP_BEGIN, but it can't be in the state
910: ** machine as we need the structure first.
911: */
1.141 frystyk 912: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
913: HTAnchor_physical(anchor));
914: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
915: HT_OUTOFMEM("HTLoadHTTP");
916: http->net = net;
1.157 frystyk 917: http->request = request;
1.141 frystyk 918: HTNet_setContext(net, http);
919: HTNet_setEventCallback(net, HTTPEvent);
920: HTNet_setEventParam(net, http); /* callbacks get http* */
921:
1.157 frystyk 922: return HTTPEvent(soc, http, HTEvent_BEGIN); /* get it started - ops is ignored */
923: }
924:
925: PRIVATE int FlushPutEvent (HTTimer * timer, void * param, HTEventType type)
926: {
927: http_info * http = (http_info *) param;
928: HTStream * input = HTRequest_inputStream(http->request);
929: HTPostCallback * pcbf = HTRequest_postCallback(http->request);
930:
1.160 frystyk 931: if (timer != http->timer)
932: HTDebugBreak(__FILE__, __LINE__, "HTTP timer %p not in sync\n", timer);
1.157 frystyk 933: if (PROT_TRACE) HTTrace("Uploading... Flushing %p with timer %p\n", http, timer);
934:
935: /*
936: ** We ignore the return code here which we shouldn't!!!
937: */
938: if (http && input && pcbf) (*pcbf)(http->request, input);
939:
940: /*
941: ** Delete the timer
942: */
943: http->timer = NULL;
944: return HT_OK;
1.141 frystyk 945: }
946:
947: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type)
948: {
949: http_info * http = (http_info *)pVoid;
950: int status = HT_ERROR;
951: HTNet * net = http->net;
952: HTRequest * request = HTNet_request(net);
1.144 frystyk 953: HTParentAnchor * anchor = HTRequest_anchor(request);
954: HTHost * host = HTNet_host(net);
1.141 frystyk 955:
956: /*
957: ** Check whether we have been interrupted
958: */
959: if (type == HTEvent_BEGIN) {
1.134 frystyk 960: http->next = HTTP_OK;
961: http->result = HT_ERROR;
1.141 frystyk 962: } else if (type == HTEvent_CLOSE) {
1.112 frystyk 963: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
964: NULL, 0, "HTLoadHTTP");
965: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 966: return HT_OK;
1.141 frystyk 967: } else if (type == HTEvent_END) {
968: HTTPCleanup(request, http->result);
969: return HT_OK;
970: } else if (type == HTEvent_RESET) {
971: HTTPCleanup(request, HT_RECOVER_PIPE);
1.145 frystyk 972: http->state = HTTP_BEGIN;
1.141 frystyk 973: return HT_OK;
974: }
975:
1.71 frystyk 976: /* Now jump into the machine. We know the state from the previous run */
977: while (1) {
978: switch (http->state) {
1.134 frystyk 979: case HTTP_BEGIN:
1.144 frystyk 980: status = HTHost_connect(host, net, HTAnchor_physical(anchor), HTTP_PORT);
981: host = HTNet_host(net);
1.153 frystyk 982: if (status == HT_OK) {
1.140 frystyk 983:
1.123 frystyk 984: /*
1.140 frystyk 985: ** Check the protocol class to see if we have connected to a
986: ** the right class of server, in this case HTTP. If we don't
987: ** know the server then assume a HTTP/1.0
1.123 frystyk 988: */
989: {
990: char * s_class = HTHost_class(host);
1.140 frystyk 991: if (!s_class) {
992: if (HTRequest_proxy(request) == NULL)
993: HTRequest_addConnection(request, "Keep-Alive", "");
994: HTHost_setClass(host, "http");
995: } else if (strcasecomp(s_class, "http")) {
1.123 frystyk 996: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
997: NULL, 0, "HTLoadHTTP");
998: http->state = HTTP_ERROR;
999: break;
1000: }
1.95 frystyk 1001: }
1.147 frystyk 1002:
1.156 frystyk 1003: if (ConnectionMode & HTTP_11_NO_PIPELINING) {
1.147 frystyk 1004: if (PROT_TRACE) HTTrace("HTTP........ Mode is HTTP/1.1 WITH NO PIPELINING\n");
1005: HTRequest_setFlush(request, YES);
1006: } else if (ConnectionMode & HTTP_FORCE_10) {
1007: if (PROT_TRACE) HTTrace("HTTP........ Mode is FORCE HTTP/1.0\n");
1008: HTHost_setVersion(host, HTTP_10);
1009: }
1010:
1.151 frystyk 1011: if (HTNet_preemptive(net)) {
1012: if (PROT_TRACE) HTTrace("HTTP........ Force flush on preemptive load\n");
1013: HTRequest_setFlush(request, YES);
1014: }
1015:
1.147 frystyk 1016: /* Jump to next state */
1.144 frystyk 1017: http->state = HTTP_NEED_STREAM;
1.159 frystyk 1018: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING) {
1.144 frystyk 1019: return HT_OK;
1.159 frystyk 1020: } else
1.144 frystyk 1021: http->state = HTTP_ERROR; /* Error or interrupt */
1022: break;
1023:
1024: case HTTP_NEED_STREAM:
1.138 frystyk 1025:
1.144 frystyk 1026: /*
1027: ** Create the stream pipe FROM the channel to the application.
1028: ** The target for the input stream pipe is set up using the
1029: ** stream stack.
1030: */
1.153 frystyk 1031: {
1.144 frystyk 1032: HTStream *me=HTStreamStack(WWW_HTTP,
1033: HTRequest_outputFormat(request),
1034: HTRequest_outputStream(request),
1035: request, YES);
1036: HTNet_setReadStream(net, me);
1037: HTRequest_setOutputConnected(request, YES);
1038: }
1.127 frystyk 1039:
1.144 frystyk 1040: /*
1041: ** Create the stream pipe TO the channel from the application
1042: ** and hook it up to the request object
1043: */
1044: {
1045: HTChannel * channel = HTHost_channel(host);
1046: HTOutputStream * output = HTChannel_getChannelOStream(channel);
1047: int version = HTHost_version(host);
1048: HTStream * app = NULL;
1049:
1.139 frystyk 1050: #ifdef HTTP_DUMP
1.144 frystyk 1051: if (PROT_TRACE) {
1.162 frystyk 1052: if (!htfp) htfp = fopen(HTTP_OUTPUT, "ab");
1053: if (htfp) {
1.144 frystyk 1054: output = (HTOutputStream *)
1.162 frystyk 1055: HTTee((HTStream *) output, HTFWriter_new(request, htfp, YES), NULL);
1.147 frystyk 1056: HTTrace("HTTP........ Dumping request to `%s\'\n", HTTP_OUTPUT);
1.144 frystyk 1057: }
1058: }
1.139 frystyk 1059: #endif /* HTTP_DUMP */
1.144 frystyk 1060: app = HTMethod_hasEntity(HTRequest_method(request)) ?
1061: HTMIMERequest_new(request,
1062: HTTPRequest_new(request, (HTStream *) output, NO,
1063: version),
1064: YES) :
1065: HTTPRequest_new(request, (HTStream *) output, YES, version);
1066: HTRequest_setInputStream(request, app);
1067: }
1.88 frystyk 1068:
1.144 frystyk 1069: /*
1070: ** Set up concurrent read/write if this request isn't the
1071: ** source for a PUT or POST. As source we don't start reading
1072: ** before all destinations are ready. If destination then
1073: ** register the input stream and get ready for read
1074: */
1075: if (HTRequest_isDestination(request)) {
1076: HTHost_register(host, net, HTEvent_READ);
1077: HTRequest_linkDestination(request);
1078: }
1079: http->state = HTTP_CONNECTED;
1080: type = HTEvent_WRITE; /* fresh, so try a write */
1.71 frystyk 1081: break;
1082:
1.87 frystyk 1083: /* As we can do simultanous read and write this is now one state */
1.141 frystyk 1084: case HTTP_CONNECTED:
1085: if (type == HTEvent_WRITE) {
1.157 frystyk 1086: HTStream * input = HTRequest_inputStream(request);
1087: HTPostCallback * pcbf = HTRequest_postCallback(request);
1088: status = HTRequest_flush(request) ?
1089: HTHost_forceFlush(host) : (*input->isa->flush)(input);
1090:
1091: /*
1092: ** Check to see if we are uploading something or just a normal
1093: ** GET kind of thing.
1094: */
1095: if (pcbf) {
1096: if (http->lock == NO) {
1097: int retrys = HTRequest_retrys(request);
1098: ms_t delay = retrys > 3 ? 3000 : 2000;
1099: if (!http->timer) {
1.162 frystyk 1100: http->timer = HTTimer_new(NULL, FlushPutEvent,
1101: http, delay, YES, NO);
1.157 frystyk 1102: if (PROT_TRACE)
1103: HTTrace("Uploading... Holding %p request for %lu ms\n",
1104: request, delay);
1105: HTHost_register(host, net, HTEvent_READ);
1106: }
1107: http->lock = YES;
1108: }
1109: type = HTEvent_READ;
1110: } else {
1111:
1112: /*
1113: ** Check to see if we can start a new request
1114: ** pending in the host object.
1115: */
1116: HTHost_launchPending(host);
1117: type = HTEvent_READ;
1118: }
1119:
1120: /* Now check the status code */
1121: if (status == HT_WOULD_BLOCK)
1122: return HT_OK;
1123: else if (status == HT_PAUSE || status == HT_LOADED) {
1124: type = HTEvent_READ;
1125: } else if (status==HT_CLOSED)
1126: http->state = HTTP_RECOVER_PIPE;
1127: else if (status == HT_ERROR) {
1128: http->result = HT_INTERRUPTED;
1129: http->state = HTTP_ERROR;
1130: break;
1131: }
1132: } else if (type == HTEvent_FLUSH) {
1133: HTStream * input = HTRequest_inputStream(request);
1134: if (input == NULL)
1135: return HT_ERROR;
1136: return (*input->isa->flush)(input);
1137: } else if (type == HTEvent_READ) {
1138: status = HTHost_read(host, net);
1139: if (status == HT_WOULD_BLOCK)
1140: return HT_OK;
1141: else if (status == HT_CONTINUE) {
1142: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
1143: http->lock = NO;
1144: continue;
1145: } else if (status==HT_LOADED)
1146: http->state = http->next; /* Jump to next state (OK or ERROR) */
1147: else if (status==HT_CLOSED)
1148: http->state = HTTP_RECOVER_PIPE;
1149: else
1150: http->state = HTTP_ERROR;
1151: } else {
1152: http->state = HTTP_ERROR; /* don't know how to handle OOB */
1153: }
1154: break;
1.141 frystyk 1155:
1.134 frystyk 1156: case HTTP_OK:
1.88 frystyk 1157: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 1158: if (HTRequest_isDestination(request)) {
1.126 frystyk 1159: HTRequest * source = HTRequest_source(request);
1.91 frystyk 1160: HTLink *link =
1.127 frystyk 1161: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 1162: (HTAnchor *) anchor);
1.109 frystyk 1163: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 1164: }
1.112 frystyk 1165: }
1.134 frystyk 1166: HTTPCleanup(request, http->result);
1.94 frystyk 1167: return HT_OK;
1.71 frystyk 1168: break;
1.141 frystyk 1169:
1170: case HTTP_RECOVER_PIPE:
1171: {
1172: /*
1173: ** If this is a persistent connection and we get a close
1174: ** then it is an error and we should recover from it by
1175: ** restarting the pipe line of requests if any
1176: */
1.151 frystyk 1177: if (HTHost_isPersistent(host) && !HTHost_closeNotification(host)) {
1.143 frystyk 1178: if (host == NULL) return HT_ERROR;
1.144 frystyk 1179: HTRequest_setFlush(request, YES);
1180: HTHost_recoverPipe(host);
1.162 frystyk 1181: #if 0
1182: /* Is handled from within HTHost_recoverPipe */
1.144 frystyk 1183: http->state = HTTP_BEGIN;
1184: HTHost_launchPending(host);
1.162 frystyk 1185: #endif
1.144 frystyk 1186: return HT_OK;
1.141 frystyk 1187: } else
1188: http->state = HTTP_OK;
1189: }
1.143 frystyk 1190: break;
1.141 frystyk 1191:
1.71 frystyk 1192: case HTTP_ERROR:
1.143 frystyk 1193: if (HTRequest_isPostWeb(request)) {
1194: if (HTRequest_isDestination(request)) {
1195: HTRequest * source = HTRequest_source(request);
1196: HTLink *link =
1197: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1198: (HTAnchor *) anchor);
1199: HTLink_setResult(link, HT_LINK_ERROR);
1200: }
1201: HTRequest_killPostWeb(request);
1202: }
1203: HTTPCleanup(request, http->result);
1204: return HT_OK;
1205: break;
1206:
1.141 frystyk 1207: default:
1.160 frystyk 1208: HTDebugBreak(__FILE__, __LINE__, "Bad http state %d\n", http->state);
1.71 frystyk 1209: }
1210: } /* End of while(1) */
1211: }
1.88 frystyk 1212:
1.147 frystyk 1213: PUBLIC void HTTP_setConnectionMode (HTTPConnectionMode mode)
1214: {
1215: ConnectionMode = mode;
1216: }
1217:
1218: PUBLIC HTTPConnectionMode HTTP_connectionMode (void)
1219: {
1220: return ConnectionMode;
1221: }
1.21 luotonen 1222:
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