Annotation of libwww/Library/src/HTTP.c, revision 1.156
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.
1.156 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.155 1997年12月24日 17:09:11 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 */
1.119 frystyk 20: #include "sysdep.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"
1.140 frystyk 45: #endif
1.139 frystyk 46:
1.59 frystyk 47: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 48:
49: /* Final states have negative value */
1.59 frystyk 50: typedef enum _HTTPState {
1.141 frystyk 51: HTTP_RECOVER_PIPE = -3,
1.134 frystyk 52: HTTP_ERROR = -2,
53: HTTP_OK = -1,
1.71 frystyk 54: HTTP_BEGIN = 0,
1.144 frystyk 55: HTTP_NEED_STREAM,
1.141 frystyk 56: HTTP_CONNECTED
1.59 frystyk 57: } HTTPState;
1.55 frystyk 58:
1.94 frystyk 59: /* This is the context structure for the this module */
1.55 frystyk 60: typedef struct _http_info {
1.81 frystyk 61: HTTPState state; /* Current State of the connection */
62: HTTPState next; /* Next state */
1.134 frystyk 63: int result; /* Result to report to the after filter */
1.139 frystyk 64: BOOL lock; /* Block for writing */
1.141 frystyk 65: HTNet * net;
1.55 frystyk 66: } http_info;
67:
1.88 frystyk 68: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 69:
1.71 frystyk 70: struct _HTStream {
1.119 frystyk 71: const HTStreamClass * isa;
1.71 frystyk 72: HTStream * target;
73: HTRequest * request;
74: http_info * http;
1.121 frystyk 75: HTEOLState state;
1.71 frystyk 76: BOOL transparent;
1.150 frystyk 77: BOOL cont;
1.81 frystyk 78: char * version; /* Should we save this? */
1.71 frystyk 79: int status;
1.81 frystyk 80: char * reason;
1.71 frystyk 81: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 82: int buflen;
1.146 frystyk 83: int startLen;/* buflen when put_block was called */
1.71 frystyk 84: };
1.21 luotonen 85:
1.123 frystyk 86: struct _HTInputStream {
87: const HTInputStreamClass * isa;
88: };
89:
1.147 frystyk 90: #ifdef HT_NO_PIPELINING
1.156 ! frystyk 91: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_11_NO_PIPELINING;
1.147 frystyk 92: #else
1.156 ! frystyk 93: #ifdef HT_MUX
! 94: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_11_MUX;
! 95: #else
! 96: #ifdef HT_FORCE_10
! 97: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_FORCE_10;
! 98: #else
! 99: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_11_PIPELINING;
! 100: #endif
! 101: #endif
1.147 frystyk 102: #endif
103:
1.71 frystyk 104: /* ------------------------------------------------------------------------- */
105: /* Help Functions */
106: /* ------------------------------------------------------------------------- */
1.21 luotonen 107:
1.94 frystyk 108: /* HTTPCleanup
109: ** -----------
1.55 frystyk 110: ** This function closes the connection and frees memory.
1.94 frystyk 111: ** Returns YES on OK, else NO
1.1 timbl 112: */
1.94 frystyk 113: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 114: {
1.126 frystyk 115: HTNet * net = HTRequest_net(req);
116: http_info * http = (http_info *) HTNet_context(net);
117: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 118:
1.144 frystyk 119: if (PROT_TRACE)
120: HTTrace("HTTP Clean.. Called with status %d, net %p\n", status, net);
121:
1.94 frystyk 122: /* Free stream with data TO network */
1.112 frystyk 123: if (HTRequest_isDestination(req))
124: HTRequest_removeDestination(req);
1.126 frystyk 125: else if (input) {
1.145 frystyk 126: if (status == HT_INTERRUPTED || status == HT_RECOVER_PIPE)
1.126 frystyk 127: (*input->isa->abort)(input, NULL);
1.94 frystyk 128: else
1.126 frystyk 129: (*input->isa->_free)(input);
130: HTRequest_setInputStream(req, NULL);
1.94 frystyk 131: }
1.88 frystyk 132:
1.144 frystyk 133: /*
134: ** Remove the request object and our own context structure for http.
135: */
136: if (status != HT_RECOVER_PIPE) {
1.153 frystyk 137: HTNet_delete(net, status);
1.141 frystyk 138: HT_FREE(http);
139: }
1.94 frystyk 140: return YES;
1.55 frystyk 141: }
142:
1.71 frystyk 143: /*
1.130 frystyk 144: ** Informational 1xx codes are handled separately
1.136 frystyk 145: ** Returns YES if we should continue, NO if we should stop
1.55 frystyk 146: */
1.130 frystyk 147: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 148: {
1.136 frystyk 149: http_info * http = me->http;
1.71 frystyk 150: switch (me->status) {
151:
1.136 frystyk 152: case 100:
153: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
154: me->reason, (int) strlen(me->reason),
155: "HTTPInformation");
156: return YES;
157: break;
158:
1.130 frystyk 159: case 101:
1.136 frystyk 160: /*
161: ** We consider 101 Switching as a final state and exit this request
162: */
1.130 frystyk 163: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 164: me->reason, (int) strlen(me->reason),
1.130 frystyk 165: "HTTPInformation");
1.136 frystyk 166: http->next = HTTP_OK;
167: http->result = HT_UPGRADE;
1.127 frystyk 168: break;
169:
1.130 frystyk 170: default:
1.136 frystyk 171: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
172: (void *) me->buffer, me->buflen, "HTTPNextState");
173: http->next = HTTP_ERROR;
174: http->result = HT_ERROR;
1.127 frystyk 175: break;
1.130 frystyk 176: }
1.136 frystyk 177: return NO;
1.130 frystyk 178: }
179:
180: /*
181: ** This is a big switch handling all HTTP return codes. It puts in any
182: ** appropiate error message and decides whether we should expect data
183: ** or not.
184: */
185: PRIVATE void HTTPNextState (HTStream * me)
186: {
1.134 frystyk 187: http_info * http = me->http;
1.130 frystyk 188: switch (me->status) {
1.127 frystyk 189:
1.78 frystyk 190: case 0: /* 0.9 response */
1.127 frystyk 191: case 200: /* OK */
192: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
193: me->reason, (int) strlen(me->reason),
194: "HTTPNextState");
1.134 frystyk 195: http->next = HTTP_OK;
196: http->result = HT_LOADED;
1.112 frystyk 197: break;
198:
1.127 frystyk 199: case 201: /* Created */
1.112 frystyk 200: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
201: me->reason, (int) strlen(me->reason),
202: "HTTPNextState");
1.134 frystyk 203: http->next = HTTP_OK;
204: http->result = HT_CREATED;
1.112 frystyk 205: break;
206:
1.127 frystyk 207: case 202: /* Accepted */
1.112 frystyk 208: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
209: me->reason, (int) strlen(me->reason),
210: "HTTPNextState");
1.134 frystyk 211: http->next = HTTP_OK;
212: http->result = HT_ACCEPTED;
1.112 frystyk 213: break;
214:
1.127 frystyk 215: case 203: /* Non-authoritative information */
216: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 217: me->reason, (int) strlen(me->reason),
218: "HTTPNextState");
1.134 frystyk 219: http->next = HTTP_OK;
220: http->result = HT_LOADED;
1.71 frystyk 221: break;
1.78 frystyk 222:
223: case 204: /* No Response */
1.112 frystyk 224: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
225: me->reason, (int) strlen(me->reason),
226: "HTTPNextState");
1.134 frystyk 227: http->next = HTTP_OK;
228: http->result = HT_NO_DATA;
229: break;
230:
231: case 205: /* Reset Content */
232: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
233: me->reason, (int) strlen(me->reason),
234: "HTTPNextState");
235: http->next = HTTP_OK;
236: http->result = HT_RESET_CONTENT;
237: break;
238:
239: case 206: /* Partial Content */
240: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
241: me->reason, (int) strlen(me->reason),
242: "HTTPNextState");
243: http->next = HTTP_OK;
244: http->result = HT_PARTIAL_CONTENT;
245: break;
246:
1.152 frystyk 247: case 207: /* Partial Update OK */
248: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL_OK,
249: me->reason, (int) strlen(me->reason),
250: "HTTPNextState");
251: http->next = HTTP_OK;
252: http->result = HT_PARTIAL_CONTENT;
253: break;
254:
1.134 frystyk 255: case 300: /* Multiple Choices */
256: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
257: me->reason, (int) strlen(me->reason),
258: "HTTPNextState");
259: http->next = HTTP_OK;
260: http->result = HT_LOADED;
1.71 frystyk 261: break;
1.78 frystyk 262:
1.71 frystyk 263: case 301: /* Moved */
1.112 frystyk 264: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
265: me->reason, (int) strlen(me->reason),
266: "HTTPNextState");
1.134 frystyk 267: http->next = HTTP_ERROR;
268: http->result = HT_PERM_REDIRECT;
1.112 frystyk 269: break;
270:
1.71 frystyk 271: case 302: /* Found */
1.112 frystyk 272: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
273: me->reason, (int) strlen(me->reason),
274: "HTTPNextState");
1.134 frystyk 275: http->next = HTTP_ERROR;
1.152 frystyk 276: http->result = HT_FOUND;
1.71 frystyk 277: break;
1.55 frystyk 278:
1.71 frystyk 279: case 303: /* Method */
1.152 frystyk 280: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_METHOD,
1.107 frystyk 281: me->reason, (int) strlen(me->reason),
282: "HTTPNextState");
1.134 frystyk 283: http->next = HTTP_ERROR;
284: http->result = HT_SEE_OTHER;
1.71 frystyk 285: break;
1.91 frystyk 286:
287: case 304: /* Not Modified */
1.131 frystyk 288: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 289: me->reason, (int) strlen(me->reason),
290: "HTTPNextState");
1.135 frystyk 291: http->next = HTTP_OK;
1.134 frystyk 292: http->result = HT_NOT_MODIFIED;
293: break;
294:
295: case 305: /* Use proxy */
296: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
297: me->reason, (int) strlen(me->reason),
298: "HTTPNextState");
299: http->next = HTTP_ERROR;
300: http->result = HT_USE_PROXY;
1.91 frystyk 301: break;
1.55 frystyk 302:
1.152 frystyk 303: #if 0
304: case 306: /* Use proxy */
305: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PROXY_REDIRECT,
306: me->reason, (int) strlen(me->reason),
307: "HTTPNextState");
308: http->next = HTTP_ERROR;
309: http->result = HT_USE_PROXY;
310: break;
311: #endif
312:
313: case 307: /* Use proxy */
314: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_TEMP_REDIRECT,
315: me->reason, (int) strlen(me->reason),
316: "HTTPNextState");
317: http->next = HTTP_ERROR;
318: http->result = HT_TEMP_REDIRECT;
319: break;
320:
1.78 frystyk 321: case 400: /* Bad Request */
1.104 frystyk 322: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 323: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 324: http->next = HTTP_ERROR;
1.155 frystyk 325: http->result = -400;
1.71 frystyk 326: break;
1.70 howcome 327:
1.71 frystyk 328: case 401:
1.104 frystyk 329: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 330: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 331: http->next = HTTP_ERROR;
332: http->result = HT_NO_ACCESS;
1.71 frystyk 333: break;
334:
335: case 402: /* Payment required */
1.104 frystyk 336: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 337: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 338: http->next = HTTP_ERROR;
1.155 frystyk 339: http->result = -402;
1.71 frystyk 340: break;
1.55 frystyk 341:
1.71 frystyk 342: case 403: /* Forbidden */
1.104 frystyk 343: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 344: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 345: http->next = HTTP_ERROR;
346: http->result = HT_FORBIDDEN;
1.71 frystyk 347: break;
1.55 frystyk 348:
1.71 frystyk 349: case 404: /* Not Found */
1.104 frystyk 350: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 351: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 352: http->next = HTTP_ERROR;
1.155 frystyk 353: http->result = -404;
1.71 frystyk 354: break;
355:
1.78 frystyk 356: case 405: /* Not Allowed */
1.104 frystyk 357: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 358: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 359: http->next = HTTP_ERROR;
1.155 frystyk 360: http->result = -405;
1.78 frystyk 361: break;
362:
363: case 406: /* None Acceptable */
1.104 frystyk 364: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 365: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 366: http->next = HTTP_ERROR;
367: http->result = HT_NOT_ACCEPTABLE;
1.78 frystyk 368: break;
369:
370: case 407: /* Proxy Authentication Required */
1.127 frystyk 371: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 372: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 373: http->next = HTTP_ERROR;
374: http->result = HT_NO_PROXY_ACCESS;
1.78 frystyk 375: break;
376:
377: case 408: /* Request Timeout */
1.104 frystyk 378: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 379: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 380: http->next = HTTP_ERROR;
1.155 frystyk 381: http->result = -408;
1.134 frystyk 382: break;
383:
384: case 409: /* Conflict */
385: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
386: me->reason, (int) strlen(me->reason), "HTTPNextState");
387: http->next = HTTP_ERROR;
388: http->result = HT_CONFLICT;
389: break;
390:
391: case 410: /* Gone */
392: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
393: me->reason, (int) strlen(me->reason), "HTTPNextState");
394: http->next = HTTP_ERROR;
1.155 frystyk 395: http->result = -410;
1.134 frystyk 396: break;
397:
398: case 411: /* Length Required */
399: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
400: me->reason, (int) strlen(me->reason), "HTTPNextState");
401: http->next = HTTP_ERROR;
402: http->result = HT_LENGTH_REQUIRED;
403: break;
404:
405: case 412: /* Precondition failed */
406: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
407: me->reason, (int) strlen(me->reason), "HTTPNextState");
408: http->next = HTTP_ERROR;
1.155 frystyk 409: http->result = -412;
1.134 frystyk 410: break;
411:
412: case 413: /* Request entity too large */
413: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
414: me->reason, (int) strlen(me->reason), "HTTPNextState");
415: http->next = HTTP_ERROR;
1.155 frystyk 416: http->result = -413;
1.134 frystyk 417: break;
418:
419: case 414: /* Request-URI too long */
420: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
421: me->reason, (int) strlen(me->reason), "HTTPNextState");
422: http->next = HTTP_ERROR;
1.155 frystyk 423: http->result = -414;
1.134 frystyk 424: break;
425:
426: case 415: /* Unsupported */
427: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
428: me->reason, (int) strlen(me->reason), "HTTPNextState");
429: http->next = HTTP_ERROR;
1.155 frystyk 430: http->result = -415;
1.78 frystyk 431: break;
432:
1.152 frystyk 433: case 416: /* Request Range not satisfiable */
434: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_RANGE,
435: me->reason, (int) strlen(me->reason), "HTTPNextState");
436: http->next = HTTP_ERROR;
1.155 frystyk 437: http->result = -416;
1.152 frystyk 438: break;
439:
440: case 417: /* Expectation Failed */
441: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_EXPECTATION_FAILED,
442: me->reason, (int) strlen(me->reason), "HTTPNextState");
443: http->next = HTTP_ERROR;
1.155 frystyk 444: http->result = -417;
1.152 frystyk 445: break;
446:
447: case 418: /* Reauthentication required */
448: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_REAUTH,
449: me->reason, (int) strlen(me->reason), "HTTPNextState");
450: http->next = HTTP_ERROR;
1.155 frystyk 451: http->result = -418;
1.152 frystyk 452: break;
453:
454: case 419: /* Proxy Reauthentication required */
455: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PROXY_REAUTH,
456: me->reason, (int) strlen(me->reason), "HTTPNextState");
457: http->next = HTTP_ERROR;
1.155 frystyk 458: http->result = -419;
1.152 frystyk 459: break;
460:
1.71 frystyk 461: case 500:
1.104 frystyk 462: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 463: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 464: http->next = HTTP_ERROR;
1.155 frystyk 465: http->result = -500;
1.78 frystyk 466: break;
467:
1.71 frystyk 468: case 501:
1.104 frystyk 469: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 470: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 471: http->next = HTTP_ERROR;
1.155 frystyk 472: http->result = -501;
1.78 frystyk 473: break;
474:
475: case 502:
1.104 frystyk 476: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 477: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 478: http->next = HTTP_ERROR;
1.155 frystyk 479: http->result = -502;
1.78 frystyk 480: break;
481:
482: case 503:
1.104 frystyk 483: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 484: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 485: http->next = HTTP_ERROR;
1.81 frystyk 486:
1.140 frystyk 487: /*
488: ** If Retry-After header is found then return HT_RETRY else HT_ERROR.
489: ** The caller may want to reissue the request at a later point in time.
490: */
491: {
492: HTResponse * response = HTRequest_response(me->request);
493: if (HTResponse_retryTime(response))
494: http->result = HT_RETRY;
495: else
1.155 frystyk 496: http->result = -500;
1.140 frystyk 497: }
1.78 frystyk 498: break;
499:
500: case 504:
1.104 frystyk 501: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 502: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 503: http->next = HTTP_ERROR;
1.155 frystyk 504: http->result = -504;
1.134 frystyk 505: break;
506:
507: case 505: /* Unsupported protocol version */
508: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
1.152 frystyk 509: me->reason, (int) strlen(me->reason), "HTTPNextState");
510: http->next = HTTP_ERROR;
511: http->result = HT_BAD_VERSION;
512: break;
513:
514: case 506: /* Partial update Not Implemented */
515: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NO_PARTIAL_UPDATE,
1.134 frystyk 516: me->reason, (int) strlen(me->reason), "HTTPNextState");
517: http->next = HTTP_ERROR;
518: http->result = HT_BAD_VERSION;
1.71 frystyk 519: break;
1.78 frystyk 520:
1.71 frystyk 521: default: /* bad number */
1.104 frystyk 522: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 523: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 frystyk 524: http->next = HTTP_ERROR;
1.155 frystyk 525: http->result = -(me->status);
1.71 frystyk 526: break;
1.55 frystyk 527: }
528: }
529:
1.71 frystyk 530: /* ------------------------------------------------------------------------- */
531: /* HTTP Status Line Stream */
532: /* ------------------------------------------------------------------------- */
1.55 frystyk 533:
1.71 frystyk 534: /*
1.141 frystyk 535: ** Analyze the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 536: ** then create a MIME-stream, else create a Guess stream to find out
537: ** what the 0.9 server is sending. We need to copy the buffer as we don't
538: ** know if we can modify the contents or not.
1.78 frystyk 539: **
540: ** Stream handling is a function of the status code returned from the
541: ** server:
542: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 543: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 544: **
545: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 546: */
1.100 frystyk 547: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 548: {
1.136 frystyk 549: HTRequest * request = me->request;
550: HTNet * net = HTRequest_net(request);
1.123 frystyk 551: HTHost * host = HTNet_host(net);
1.141 frystyk 552:
1.80 frystyk 553: if (me->target) {
554: int status = PUTBLOCK(me->buffer, me->buflen);
555: if (status == HT_OK)
556: me->transparent = YES;
557: return status;
1.136 frystyk 558: } else if (HTRequest_isSource(request)&&!HTRequest_outputStream(request)) {
1.88 frystyk 559: /*
560: ** We need to wait for the destinations to get ready
561: */
562: return HT_WOULD_BLOCK;
1.80 frystyk 563: }
1.153 frystyk 564:
565: #if 0
566: {
567: char * uri = HTAnchor_address((HTAnchor *) HTRequest_anchor(request));
568: fprintf(stderr, "HTTP header: %s for '%s'\n", me->buffer, uri);
569: HT_FREE(uri);
570: }
571: #endif
572:
1.132 frystyk 573: /*
574: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
575: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
1.141 frystyk 576:
1.132 frystyk 577: */
578: if (strncasecomp(me->buffer, "http", 4)) {
1.80 frystyk 579: int status;
1.136 frystyk 580: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 581: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 582: me->target = HTStreamStack(WWW_UNKNOWN,
583: HTRequest_outputFormat(request),
584: HTRequest_outputStream(request),
585: request, NO);
1.134 frystyk 586: me->http->next = HTTP_OK;
1.80 frystyk 587: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
588: me->transparent = YES;
1.123 frystyk 589: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 590: return status;
591: } else {
1.140 frystyk 592: HTResponse * response = HTRequest_response(request);
1.155 frystyk 593: char * ptr = me->buffer+5; /* Skip the HTTP part */
594: char * vptr = NULL;
595: int major = 0;
596: int minor = 0;
597: me->version = vptr = HTNextField(&ptr);
598: if (vptr) {
599: major = (int) strtol(me->version, &vptr, 10);
600: if (vptr++) minor = strtol(vptr, NULL, 10);
601: }
1.95 frystyk 602:
1.130 frystyk 603: /* Here we want to find out when to use persistent connection */
1.155 frystyk 604: if (major > 1) {
605: if (PROT_TRACE)HTTrace("HTTP Status. Major version number is %d\n", major);
606: me->target = HTErrorStream();
607: me->status = 999999;
608: HTTPNextState(me); /* Get next state */
609: return HT_OK;
610: } else if (minor <= 0) {
611: if (PROT_TRACE)HTTrace("HTTP Status. This is an HTTP/1.0 server\n");
1.128 frystyk 612: HTHost_setVersion(host, HTTP_10);
1.155 frystyk 613: } else { /* 1.x, x>0 family */
614: HTHost_setVersion(host, HTTP_11); /* Best we can do */
1.156 ! frystyk 615: if (ConnectionMode & HTTP_11_NO_PIPELINING) {
! 616: if (PROT_TRACE)
! 617: HTTrace("HTTP........ Mode is HTTP/1.1 with NO PIPELINING\n");
1.147 frystyk 618: HTNet_setPersistent(net, YES, HT_TP_SINGLE);
1.156 ! frystyk 619: } else if (ConnectionMode & HTTP_11_MUX) {
! 620: if (PROT_TRACE)
! 621: HTTrace("HTTP........ Mode is HTTP/1.1 with MUXING\n");
! 622: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE);
1.147 frystyk 623: } else if (ConnectionMode & HTTP_FORCE_10) {
624: if (PROT_TRACE) HTTrace("HTTP........ Mode is FORCE HTTP/1.0\n");
625: HTHost_setVersion(host, HTTP_10);
626: HTNet_setPersistent(net, NO, HT_TP_SINGLE);
627: } else
628: HTNet_setPersistent(net, YES, HT_TP_PIPELINE);
1.128 frystyk 629: }
1.95 frystyk 630:
1.81 frystyk 631: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 632: /* Kludge to fix the NCSA server version bug */
633: if (me->status == 0) me->status = atoi(me->version);
634:
1.81 frystyk 635: me->reason = ptr;
636: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
637: *ptr = '0円';
638: else if ((ptr = strchr(me->reason, '\n')) != NULL)
639: *ptr = '0円';
640:
1.130 frystyk 641: /*
642: ** If it is a 1xx code then find out what to do and return until we
643: ** get the next code. In the case of Upgrade we may not get back here
644: ** at all. If we are uploading an entity then continue doing that
645: */
646: if (me->status/100 == 1) {
1.136 frystyk 647: if (HTTPInformation(me) == YES) {
648: me->buflen = 0;
649: me->state = EOL_BEGIN;
1.150 frystyk 650: me->target = HTStreamStack(WWW_MIME_CONT,
651: HTRequest_debugFormat(request),
652: HTRequest_debugStream(request),
653: request, NO);
1.136 frystyk 654: return HTMethod_hasEntity(HTRequest_method(request)) ?
655: HT_CONTINUE : HT_OK;
1.103 frystyk 656: }
1.56 frystyk 657: }
1.133 frystyk 658:
659: /*
660: ** As we are getting fresh metainformation in the HTTP response,
661: ** we clear the old metainfomation in order not to mix it with the new
662: ** one. This is particularly important for the content-length and the
1.139 frystyk 663: ** like. The TRACE and OPTIONS method just adds to the current
664: ** metainformation so in that case we don't clear the anchor.
1.133 frystyk 665: */
1.136 frystyk 666: if (me->status==200 || me->status==203 || me->status==300) {
1.140 frystyk 667: /*
668: ** 200, 203 and 300 are all fully cacheable responses. No byte
669: ** ranges or anything else make life hard in this case.
670: */
1.148 frystyk 671: HTAnchor_clearHeader(HTRequest_anchor(request));
1.140 frystyk 672: HTResponse_setCachable(response, YES);
1.136 frystyk 673: me->target = HTStreamStack(WWW_MIME,
674: HTRequest_outputFormat(request),
675: HTRequest_outputStream(request),
676: request, NO);
1.140 frystyk 677: } else if (me->status==206) {
678: /*
679: ** We got a partial response and now we must check whether
680: ** we issued a cache If-Range request or it was a new
681: ** partial response which we don't have in cache. In the latter
682: ** case, we don't cache the object and in the former we append
683: ** the result to the already existing cache entry.
684: */
685: HTReload reload = HTRequest_reloadMode(request);
686: if (reload == HT_CACHE_RANGE_VALIDATE) {
687: HTResponse_setCachable(response, YES);
688: me->target = HTStreamStack(WWW_MIME_PART,
689: HTRequest_outputFormat(request),
690: HTRequest_outputStream(request),
691: request, NO);
692: } else {
1.149 frystyk 693: HTAnchor_clearHeader(HTRequest_anchor(request));
1.140 frystyk 694: me->target = HTStreamStack(WWW_MIME,
695: HTRequest_outputFormat(request),
696: HTRequest_outputStream(request),
697: request, NO);
698: }
1.139 frystyk 699: } else if (me->status==204 || me->status==304) {
1.140 frystyk 700: HTResponse_setCachable(response, YES);
1.136 frystyk 701: me->target = HTStreamStack(WWW_MIME_HEAD,
702: HTRequest_debugFormat(request),
703: HTRequest_debugStream(request),
704: request, NO);
705: } else if (HTRequest_debugStream(request)) {
706: me->target = HTStreamStack(WWW_MIME,
707: HTRequest_debugFormat(request),
708: HTRequest_debugStream(request),
709: request, NO);
710: } else {
1.140 frystyk 711: /*
712: ** We still need to parse the MIME part in order to find any
713: ** valuable meta information which is needed from the response.
714: */
1.136 frystyk 715: me->target = HTStreamStack(WWW_MIME,
716: HTRequest_debugFormat(request),
717: HTRequest_debugStream(request),
718: request, NO);
1.133 frystyk 719: }
1.56 frystyk 720: }
1.113 frystyk 721: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 722: HTTPNextState(me); /* Get next state */
1.80 frystyk 723: me->transparent = YES;
724: return HT_OK;
1.71 frystyk 725: }
1.56 frystyk 726:
1.80 frystyk 727: /*
728: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
729: ** is found
730: */
1.119 frystyk 731: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 732: {
1.150 frystyk 733: int status = HT_OK;
1.153 frystyk 734: int length = l;
1.146 frystyk 735: me->startLen = me->buflen;
1.80 frystyk 736: while (!me->transparent && l-- > 0) {
737: if (me->target) {
1.150 frystyk 738: if (me->cont) {
739: FREE_TARGET;
740: me->target = NULL;
741: l++;
742: } else {
743: if ((status = stream_pipe(me)) == HT_CONTINUE) {
744: b++; break;
745: }
746: if (status != HT_OK) return status;
747: }
1.80 frystyk 748: } else {
749: *(me->buffer+me->buflen++) = *b;
750: if (me->state == EOL_FCR) {
751: if (*b == LF) { /* Line found */
1.150 frystyk 752: if ((status = stream_pipe(me)) == HT_CONTINUE) {
753: me->cont = YES;
754: b++; break;
755: }
756: if (status != HT_OK) return status;
1.80 frystyk 757: } else {
758: me->state = EOL_BEGIN;
759: }
760: } else if (*b == CR) {
761: me->state = EOL_FCR;
762: } else if (*b == LF) {
1.150 frystyk 763: if ((status = stream_pipe(me)) == HT_CONTINUE) {
764: me->cont = YES;
765: b++; break;
766: }
767: if (status != HT_OK) return status;
1.71 frystyk 768: } else {
1.80 frystyk 769: if (me->buflen >= MAX_STATUS_LEN) {
1.150 frystyk 770: if ((status = stream_pipe(me)) == HT_CONTINUE) {
771: me->cont = YES;
772: b++; break;
773: }
774: if (status != HT_OK) return status;
1.80 frystyk 775: }
1.71 frystyk 776: }
1.80 frystyk 777: b++;
1.71 frystyk 778: }
1.56 frystyk 779: }
1.153 frystyk 780:
781: if (length != l)
782: HTHost_setConsumed(HTNet_host(HTRequest_net(me->request)), length - l);
783:
1.99 frystyk 784: if (l > 0) return PUTBLOCK(b, l);
1.150 frystyk 785: return status;
1.56 frystyk 786: }
787:
1.119 frystyk 788: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 789: {
1.80 frystyk 790: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 791: }
1.56 frystyk 792:
1.100 frystyk 793: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 794: {
1.80 frystyk 795: return HTTPStatus_put_block(me, &c, 1);
796: }
797:
1.100 frystyk 798: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 799: {
800: return (*me->target->isa->flush)(me->target);
1.71 frystyk 801: }
802:
1.100 frystyk 803: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 804: {
1.87 frystyk 805: int status = HT_OK;
806: if (me->target) {
807: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
808: return HT_WOULD_BLOCK;
809: }
1.115 frystyk 810: HT_FREE(me);
1.100 frystyk 811: return status;
1.71 frystyk 812: }
813:
1.104 frystyk 814: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 815: {
816: if (me->target)
1.74 frystyk 817: ABORT_TARGET;
1.115 frystyk 818: HT_FREE(me);
1.74 frystyk 819: if (PROT_TRACE)
1.116 eric 820: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 821: return HT_ERROR;
1.71 frystyk 822: }
823:
824: /* HTTPStatus Stream
825: ** -----------------
826: */
1.119 frystyk 827: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 828: {
829: "HTTPStatus",
1.80 frystyk 830: HTTPStatus_flush,
1.71 frystyk 831: HTTPStatus_free,
832: HTTPStatus_abort,
833: HTTPStatus_put_character,
834: HTTPStatus_put_string,
835: HTTPStatus_put_block
836: };
837:
1.113 frystyk 838: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
839: void * param,
840: HTFormat input_format,
841: HTFormat output_format,
842: HTStream * output_stream)
1.71 frystyk 843: {
1.115 frystyk 844: HTStream * me;
845: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
846: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 847: me->isa = &HTTPStatusClass;
1.113 frystyk 848: if (request) {
1.126 frystyk 849: HTNet * net = HTRequest_net(request);
1.125 frystyk 850: /* Get existing copy */
851: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 852: me->request = request;
853: me->http = http;
854: http->next = HTTP_ERROR;
855: me->state = EOL_BEGIN;
856: return me;
857: } else
858: return HTErrorStream();
1.71 frystyk 859: }
860:
861: /* ------------------------------------------------------------------------- */
862:
863: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 864: ** ==============================
865: **
866: ** Given a hypertext address, this routine loads a document.
867: **
868: ** On entry,
869: ** request This is the request structure
1.94 frystyk 870: ** returns HT_ERROR Error has occured in call back
871: ** HT_OK Call back was OK
1.55 frystyk 872: */
1.141 frystyk 873: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type);
874:
875: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request)
1.55 frystyk 876: {
877: http_info *http; /* Specific protocol information */
1.112 frystyk 878: HTParentAnchor *anchor = HTRequest_anchor(request);
1.141 frystyk 879: HTNet * net = HTRequest_net(request);
1.112 frystyk 880:
1.94 frystyk 881: /*
882: ** Initiate a new http structure and bind to request structure
883: ** This is actually state HTTP_BEGIN, but it can't be in the state
884: ** machine as we need the structure first.
885: */
1.141 frystyk 886: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
887: HTAnchor_physical(anchor));
888: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
889: HT_OUTOFMEM("HTLoadHTTP");
890: http->net = net;
891: HTNet_setContext(net, http);
892: HTNet_setEventCallback(net, HTTPEvent);
893: HTNet_setEventParam(net, http); /* callbacks get http* */
894:
895: return HTTPEvent(soc, http, HTEvent_BEGIN); /* get it started - ops is ignored */
896: }
897:
898: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type)
899: {
900: http_info * http = (http_info *)pVoid;
901: int status = HT_ERROR;
902: HTNet * net = http->net;
903: HTRequest * request = HTNet_request(net);
1.144 frystyk 904: HTParentAnchor * anchor = HTRequest_anchor(request);
905: HTHost * host = HTNet_host(net);
1.141 frystyk 906:
907: /*
908: ** Check whether we have been interrupted
909: */
910: if (type == HTEvent_BEGIN) {
1.134 frystyk 911: http->next = HTTP_OK;
912: http->result = HT_ERROR;
1.141 frystyk 913: } else if (type == HTEvent_CLOSE) {
1.112 frystyk 914: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
915: NULL, 0, "HTLoadHTTP");
916: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 917: return HT_OK;
1.141 frystyk 918: } else if (type == HTEvent_END) {
919: HTTPCleanup(request, http->result);
920: return HT_OK;
921: } else if (type == HTEvent_RESET) {
922: HTTPCleanup(request, HT_RECOVER_PIPE);
1.145 frystyk 923: http->state = HTTP_BEGIN;
1.141 frystyk 924: return HT_OK;
925: }
926:
1.71 frystyk 927: /* Now jump into the machine. We know the state from the previous run */
928: while (1) {
929: switch (http->state) {
1.134 frystyk 930: case HTTP_BEGIN:
1.144 frystyk 931: status = HTHost_connect(host, net, HTAnchor_physical(anchor), HTTP_PORT);
932: host = HTNet_host(net);
1.153 frystyk 933: if (status == HT_OK) {
1.140 frystyk 934:
1.123 frystyk 935: /*
1.140 frystyk 936: ** Check the protocol class to see if we have connected to a
937: ** the right class of server, in this case HTTP. If we don't
938: ** know the server then assume a HTTP/1.0
1.123 frystyk 939: */
940: {
941: char * s_class = HTHost_class(host);
1.140 frystyk 942: if (!s_class) {
943: if (HTRequest_proxy(request) == NULL)
944: HTRequest_addConnection(request, "Keep-Alive", "");
945: HTHost_setClass(host, "http");
946: } else if (strcasecomp(s_class, "http")) {
1.123 frystyk 947: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
948: NULL, 0, "HTLoadHTTP");
949: http->state = HTTP_ERROR;
950: break;
951: }
1.95 frystyk 952: }
1.147 frystyk 953:
1.156 ! frystyk 954: if (ConnectionMode & HTTP_11_NO_PIPELINING) {
1.147 frystyk 955: if (PROT_TRACE) HTTrace("HTTP........ Mode is HTTP/1.1 WITH NO PIPELINING\n");
956: HTRequest_setFlush(request, YES);
957: } else if (ConnectionMode & HTTP_FORCE_10) {
958: if (PROT_TRACE) HTTrace("HTTP........ Mode is FORCE HTTP/1.0\n");
959: HTHost_setVersion(host, HTTP_10);
960: }
961:
1.151 frystyk 962: if (HTNet_preemptive(net)) {
963: if (PROT_TRACE) HTTrace("HTTP........ Force flush on preemptive load\n");
964: HTRequest_setFlush(request, YES);
965: }
966:
1.147 frystyk 967: /* Jump to next state */
1.144 frystyk 968: http->state = HTTP_NEED_STREAM;
969: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
970: return HT_OK;
971: else
972: http->state = HTTP_ERROR; /* Error or interrupt */
973: break;
974:
975: case HTTP_NEED_STREAM:
1.138 frystyk 976:
1.144 frystyk 977: /*
978: ** Create the stream pipe FROM the channel to the application.
979: ** The target for the input stream pipe is set up using the
980: ** stream stack.
981: */
1.153 frystyk 982: {
1.144 frystyk 983: HTStream *me=HTStreamStack(WWW_HTTP,
984: HTRequest_outputFormat(request),
985: HTRequest_outputStream(request),
986: request, YES);
987: HTNet_setReadStream(net, me);
988: HTRequest_setOutputConnected(request, YES);
989: }
1.127 frystyk 990:
1.144 frystyk 991: /*
992: ** Create the stream pipe TO the channel from the application
993: ** and hook it up to the request object
994: */
995: {
996: HTChannel * channel = HTHost_channel(host);
997: HTOutputStream * output = HTChannel_getChannelOStream(channel);
998: int version = HTHost_version(host);
999: HTStream * app = NULL;
1000:
1.139 frystyk 1001: #ifdef HTTP_DUMP
1.144 frystyk 1002: if (PROT_TRACE) {
1.147 frystyk 1003: FILE * htfp = NULL;
1004: if ((htfp = fopen(HTTP_OUTPUT, "ab")) != NULL) {
1.144 frystyk 1005: output = (HTOutputStream *)
1.147 frystyk 1006: HTTee((HTStream *) output, HTFWriter_new(request, htfp, NO), NULL);
1007: HTTrace("HTTP........ Dumping request to `%s\'\n", HTTP_OUTPUT);
1.144 frystyk 1008: }
1009: }
1.139 frystyk 1010: #endif /* HTTP_DUMP */
1.144 frystyk 1011: app = HTMethod_hasEntity(HTRequest_method(request)) ?
1012: HTMIMERequest_new(request,
1013: HTTPRequest_new(request, (HTStream *) output, NO,
1014: version),
1015: YES) :
1016: HTTPRequest_new(request, (HTStream *) output, YES, version);
1017: HTRequest_setInputStream(request, app);
1018: }
1.88 frystyk 1019:
1.144 frystyk 1020: /*
1021: ** Set up concurrent read/write if this request isn't the
1022: ** source for a PUT or POST. As source we don't start reading
1023: ** before all destinations are ready. If destination then
1024: ** register the input stream and get ready for read
1025: */
1026: if (HTRequest_isDestination(request)) {
1027: HTHost_register(host, net, HTEvent_READ);
1028: HTRequest_linkDestination(request);
1029: }
1030: http->state = HTTP_CONNECTED;
1031: type = HTEvent_WRITE; /* fresh, so try a write */
1.71 frystyk 1032: break;
1033:
1.87 frystyk 1034: /* As we can do simultanous read and write this is now one state */
1.141 frystyk 1035: case HTTP_CONNECTED:
1036: if (type == HTEvent_WRITE) {
1037: if (HTRequest_isDestination(request)) {
1038: HTRequest * source = HTRequest_source(request);
1039: HTNet * srcnet = HTRequest_net(source);
1040: if (srcnet) {
1.149 frystyk 1041: HTHost_register(HTNet_host(srcnet), srcnet, HTEvent_READ);
1042: HTHost_unregister(HTNet_host(srcnet), srcnet, HTEvent_WRITE);
1.141 frystyk 1043: }
1044: return HT_OK;
1045: }
1.126 frystyk 1046:
1047: /*
1048: ** Should we use the input stream directly or call the post
1049: ** callback function to send data down to the network?
1050: */
1051: {
1052: HTStream * input = HTRequest_inputStream(request);
1053: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 1054: if (pcbf) {
1.139 frystyk 1055: if (http->lock)
1056: return HT_OK;
1057: else {
1.141 frystyk 1058: status = (*pcbf)(request, input);
1.140 frystyk 1059: if (status == HT_PAUSE || status == HT_LOADED) {
1.141 frystyk 1060: type = HTEvent_READ;
1.139 frystyk 1061: http->lock = YES;
1.141 frystyk 1062: } else if (status==HT_CLOSED)
1063: http->state = HTTP_RECOVER_PIPE;
1064: else if (status == HT_ERROR) {
1.139 frystyk 1065: http->result = HT_INTERRUPTED;
1066: http->state = HTTP_ERROR;
1067: break;
1068: }
1069: }
1.131 frystyk 1070: } else {
1.154 frystyk 1071: status = HTRequest_flush(request) ?
1072: HTHost_forceFlush(host) : (*input->isa->flush)(input);
1073:
1.142 frystyk 1074: /*
1075: ** Check to see if we can start a new request
1076: ** pending in the host object.
1077: */
1.144 frystyk 1078: HTHost_launchPending(host);
1.141 frystyk 1079: type = HTEvent_READ;
1.131 frystyk 1080: }
1081: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 1082: }
1.141 frystyk 1083: } else if (type == HTEvent_FLUSH) {
1084: HTStream * input = HTRequest_inputStream(request);
1085: if (input == NULL)
1086: return HT_ERROR;
1087: return (*input->isa->flush)(input);
1088: } else if (type == HTEvent_READ) {
1.144 frystyk 1089: status = HTHost_read(host, net);
1.131 frystyk 1090: if (status == HT_WOULD_BLOCK)
1.94 frystyk 1091: return HT_OK;
1.131 frystyk 1092: else if (status == HT_CONTINUE) {
1.130 frystyk 1093: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
1.139 frystyk 1094: http->lock = NO;
1.141 frystyk 1095: type = HTEvent_WRITE;
1.130 frystyk 1096: continue;
1.133 frystyk 1097: } else if (status==HT_LOADED)
1.141 frystyk 1098: http->state = http->next; /* Jump to next state (OK or ERROR) */
1099: else if (status==HT_CLOSED)
1100: http->state = HTTP_RECOVER_PIPE;
1101: else
1.94 frystyk 1102: http->state = HTTP_ERROR;
1.90 frystyk 1103: } else {
1.141 frystyk 1104: http->state = HTTP_ERROR; /* don't know how to handle OOB */
1.90 frystyk 1105: }
1.71 frystyk 1106: break;
1.141 frystyk 1107:
1.134 frystyk 1108: case HTTP_OK:
1.88 frystyk 1109: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 1110: if (HTRequest_isDestination(request)) {
1.126 frystyk 1111: HTRequest * source = HTRequest_source(request);
1.91 frystyk 1112: HTLink *link =
1.127 frystyk 1113: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 1114: (HTAnchor *) anchor);
1.109 frystyk 1115: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 1116: }
1.112 frystyk 1117: }
1.134 frystyk 1118: HTTPCleanup(request, http->result);
1.94 frystyk 1119: return HT_OK;
1.71 frystyk 1120: break;
1.141 frystyk 1121:
1122: case HTTP_RECOVER_PIPE:
1123: {
1124: /*
1125: ** If this is a persistent connection and we get a close
1126: ** then it is an error and we should recover from it by
1127: ** restarting the pipe line of requests if any
1128: */
1.151 frystyk 1129: if (HTHost_isPersistent(host) && !HTHost_closeNotification(host)) {
1.143 frystyk 1130: if (host == NULL) return HT_ERROR;
1.144 frystyk 1131: HTRequest_setFlush(request, YES);
1132: HTHost_recoverPipe(host);
1133: http->state = HTTP_BEGIN;
1134: HTHost_launchPending(host);
1135: return HT_OK;
1.141 frystyk 1136: } else
1137: http->state = HTTP_OK;
1138: }
1.143 frystyk 1139: break;
1.141 frystyk 1140:
1.71 frystyk 1141: case HTTP_ERROR:
1.143 frystyk 1142: if (HTRequest_isPostWeb(request)) {
1143: if (HTRequest_isDestination(request)) {
1144: HTRequest * source = HTRequest_source(request);
1145: HTLink *link =
1146: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1147: (HTAnchor *) anchor);
1148: HTLink_setResult(link, HT_LINK_ERROR);
1149: }
1150: HTRequest_killPostWeb(request);
1151: }
1152: HTTPCleanup(request, http->result);
1153: return HT_OK;
1154: break;
1155:
1.141 frystyk 1156: default:
1157: HTTrace("bad http state %d.\n", http->state);
1158: HTDebugBreak();
1.71 frystyk 1159: }
1160: } /* End of while(1) */
1161: }
1.88 frystyk 1162:
1.147 frystyk 1163: PUBLIC void HTTP_setConnectionMode (HTTPConnectionMode mode)
1164: {
1165: ConnectionMode = mode;
1166: }
1167:
1168: PUBLIC HTTPConnectionMode HTTP_connectionMode (void)
1169: {
1170: return ConnectionMode;
1171: }
1.21 luotonen 1172:
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