Annotation of libwww/Library/src/HTTP.c, revision 1.152
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.
1.152 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.151 1997年04月05日 00:25:44 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
91: PRIVATE HTTPConnectionMode ConnectionMode = HTTP_NO_PIPELINING;
92: #else
93: PRIVATE HTTPConnectionMode ConnectionMode = 0;
94: #endif
95:
1.71 frystyk 96: /* ------------------------------------------------------------------------- */
97: /* Help Functions */
98: /* ------------------------------------------------------------------------- */
1.21 luotonen 99:
1.94 frystyk 100: /* HTTPCleanup
101: ** -----------
1.55 frystyk 102: ** This function closes the connection and frees memory.
1.94 frystyk 103: ** Returns YES on OK, else NO
1.1 timbl 104: */
1.94 frystyk 105: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 106: {
1.126 frystyk 107: HTNet * net = HTRequest_net(req);
108: http_info * http = (http_info *) HTNet_context(net);
109: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 110:
1.144 frystyk 111: if (PROT_TRACE)
112: HTTrace("HTTP Clean.. Called with status %d, net %p\n", status, net);
113:
1.94 frystyk 114: /* Free stream with data TO network */
1.112 frystyk 115: if (HTRequest_isDestination(req))
116: HTRequest_removeDestination(req);
1.126 frystyk 117: else if (input) {
1.145 frystyk 118: if (status == HT_INTERRUPTED || status == HT_RECOVER_PIPE)
1.126 frystyk 119: (*input->isa->abort)(input, NULL);
1.94 frystyk 120: else
1.126 frystyk 121: (*input->isa->_free)(input);
122: HTRequest_setInputStream(req, NULL);
1.94 frystyk 123: }
1.88 frystyk 124:
1.144 frystyk 125: /*
126: ** Remove the request object and our own context structure for http.
127: */
128: if (status != HT_RECOVER_PIPE) {
129: HTNet_delete(net, status);
1.141 frystyk 130: HT_FREE(http);
131: }
1.94 frystyk 132: return YES;
1.55 frystyk 133: }
134:
1.71 frystyk 135: /*
1.130 frystyk 136: ** Informational 1xx codes are handled separately
1.136 frystyk 137: ** Returns YES if we should continue, NO if we should stop
1.55 frystyk 138: */
1.130 frystyk 139: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 140: {
1.136 frystyk 141: http_info * http = me->http;
1.71 frystyk 142: switch (me->status) {
143:
1.136 frystyk 144: case 100:
145: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
146: me->reason, (int) strlen(me->reason),
147: "HTTPInformation");
148: return YES;
149: break;
150:
1.130 frystyk 151: case 101:
1.136 frystyk 152: /*
153: ** We consider 101 Switching as a final state and exit this request
154: */
1.130 frystyk 155: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 156: me->reason, (int) strlen(me->reason),
1.130 frystyk 157: "HTTPInformation");
1.136 frystyk 158: http->next = HTTP_OK;
159: http->result = HT_UPGRADE;
1.127 frystyk 160: break;
161:
1.130 frystyk 162: default:
1.136 frystyk 163: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
164: (void *) me->buffer, me->buflen, "HTTPNextState");
165: http->next = HTTP_ERROR;
166: http->result = HT_ERROR;
1.127 frystyk 167: break;
1.130 frystyk 168: }
1.136 frystyk 169: return NO;
1.130 frystyk 170: }
171:
172: /*
173: ** This is a big switch handling all HTTP return codes. It puts in any
174: ** appropiate error message and decides whether we should expect data
175: ** or not.
176: */
177: PRIVATE void HTTPNextState (HTStream * me)
178: {
1.134 frystyk 179: http_info * http = me->http;
1.130 frystyk 180: switch (me->status) {
1.127 frystyk 181:
1.78 frystyk 182: case 0: /* 0.9 response */
1.127 frystyk 183: case 200: /* OK */
184: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
185: me->reason, (int) strlen(me->reason),
186: "HTTPNextState");
1.134 frystyk 187: http->next = HTTP_OK;
188: http->result = HT_LOADED;
1.112 frystyk 189: break;
190:
1.127 frystyk 191: case 201: /* Created */
1.112 frystyk 192: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
193: me->reason, (int) strlen(me->reason),
194: "HTTPNextState");
1.134 frystyk 195: http->next = HTTP_OK;
196: http->result = HT_CREATED;
1.112 frystyk 197: break;
198:
1.127 frystyk 199: case 202: /* Accepted */
1.112 frystyk 200: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
201: me->reason, (int) strlen(me->reason),
202: "HTTPNextState");
1.134 frystyk 203: http->next = HTTP_OK;
204: http->result = HT_ACCEPTED;
1.112 frystyk 205: break;
206:
1.127 frystyk 207: case 203: /* Non-authoritative information */
208: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 209: me->reason, (int) strlen(me->reason),
210: "HTTPNextState");
1.134 frystyk 211: http->next = HTTP_OK;
212: http->result = HT_LOADED;
1.71 frystyk 213: break;
1.78 frystyk 214:
215: case 204: /* No Response */
1.112 frystyk 216: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
217: me->reason, (int) strlen(me->reason),
218: "HTTPNextState");
1.134 frystyk 219: http->next = HTTP_OK;
220: http->result = HT_NO_DATA;
221: break;
222:
223: case 205: /* Reset Content */
224: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
225: me->reason, (int) strlen(me->reason),
226: "HTTPNextState");
227: http->next = HTTP_OK;
228: http->result = HT_RESET_CONTENT;
229: break;
230:
231: case 206: /* Partial Content */
232: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
233: me->reason, (int) strlen(me->reason),
234: "HTTPNextState");
235: http->next = HTTP_OK;
236: http->result = HT_PARTIAL_CONTENT;
237: break;
238:
1.152 ! frystyk 239: case 207: /* Partial Update OK */
! 240: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL_OK,
! 241: me->reason, (int) strlen(me->reason),
! 242: "HTTPNextState");
! 243: http->next = HTTP_OK;
! 244: http->result = HT_PARTIAL_CONTENT;
! 245: break;
! 246:
1.134 frystyk 247: case 300: /* Multiple Choices */
248: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
249: me->reason, (int) strlen(me->reason),
250: "HTTPNextState");
251: http->next = HTTP_OK;
252: http->result = HT_LOADED;
1.71 frystyk 253: break;
1.78 frystyk 254:
1.71 frystyk 255: case 301: /* Moved */
1.112 frystyk 256: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
257: me->reason, (int) strlen(me->reason),
258: "HTTPNextState");
1.134 frystyk 259: http->next = HTTP_ERROR;
260: http->result = HT_PERM_REDIRECT;
1.112 frystyk 261: break;
262:
1.71 frystyk 263: case 302: /* Found */
1.112 frystyk 264: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
265: me->reason, (int) strlen(me->reason),
266: "HTTPNextState");
1.134 frystyk 267: http->next = HTTP_ERROR;
1.152 ! frystyk 268: http->result = HT_FOUND;
1.71 frystyk 269: break;
1.55 frystyk 270:
1.71 frystyk 271: case 303: /* Method */
1.152 ! frystyk 272: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_METHOD,
1.107 frystyk 273: me->reason, (int) strlen(me->reason),
274: "HTTPNextState");
1.134 frystyk 275: http->next = HTTP_ERROR;
276: http->result = HT_SEE_OTHER;
1.71 frystyk 277: break;
1.91 frystyk 278:
279: case 304: /* Not Modified */
1.131 frystyk 280: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 281: me->reason, (int) strlen(me->reason),
282: "HTTPNextState");
1.135 frystyk 283: http->next = HTTP_OK;
1.134 frystyk 284: http->result = HT_NOT_MODIFIED;
285: break;
286:
287: case 305: /* Use proxy */
288: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
289: me->reason, (int) strlen(me->reason),
290: "HTTPNextState");
291: http->next = HTTP_ERROR;
292: http->result = HT_USE_PROXY;
1.91 frystyk 293: break;
1.55 frystyk 294:
1.152 ! frystyk 295: #if 0
! 296: case 306: /* Use proxy */
! 297: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PROXY_REDIRECT,
! 298: me->reason, (int) strlen(me->reason),
! 299: "HTTPNextState");
! 300: http->next = HTTP_ERROR;
! 301: http->result = HT_USE_PROXY;
! 302: break;
! 303: #endif
! 304:
! 305: case 307: /* Use proxy */
! 306: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_TEMP_REDIRECT,
! 307: me->reason, (int) strlen(me->reason),
! 308: "HTTPNextState");
! 309: http->next = HTTP_ERROR;
! 310: http->result = HT_TEMP_REDIRECT;
! 311: break;
! 312:
1.78 frystyk 313: case 400: /* Bad Request */
1.104 frystyk 314: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 315: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 316: http->next = HTTP_ERROR;
317: http->result = HT_ERROR;
1.71 frystyk 318: break;
1.70 howcome 319:
1.71 frystyk 320: case 401:
1.104 frystyk 321: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 322: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 323: http->next = HTTP_ERROR;
324: http->result = HT_NO_ACCESS;
1.71 frystyk 325: break;
326:
327: case 402: /* Payment required */
1.104 frystyk 328: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 329: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 330: http->next = HTTP_ERROR;
331: http->result = HT_ERROR;
1.71 frystyk 332: break;
1.55 frystyk 333:
1.71 frystyk 334: case 403: /* Forbidden */
1.104 frystyk 335: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 336: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 337: http->next = HTTP_ERROR;
338: http->result = HT_FORBIDDEN;
1.71 frystyk 339: break;
1.55 frystyk 340:
1.71 frystyk 341: case 404: /* Not Found */
1.104 frystyk 342: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 343: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 344: http->next = HTTP_ERROR;
345: http->result = HT_ERROR;
1.71 frystyk 346: break;
347:
1.78 frystyk 348: case 405: /* Not Allowed */
1.104 frystyk 349: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 350: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 351: http->next = HTTP_ERROR;
352: http->result = HT_ERROR;
1.78 frystyk 353: break;
354:
355: case 406: /* None Acceptable */
1.104 frystyk 356: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 357: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 358: http->next = HTTP_ERROR;
359: http->result = HT_NOT_ACCEPTABLE;
1.78 frystyk 360: break;
361:
362: case 407: /* Proxy Authentication Required */
1.127 frystyk 363: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 364: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 365: http->next = HTTP_ERROR;
366: http->result = HT_NO_PROXY_ACCESS;
1.78 frystyk 367: break;
368:
369: case 408: /* Request Timeout */
1.104 frystyk 370: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 371: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 372: http->next = HTTP_ERROR;
373: http->result = HT_ERROR;
374: break;
375:
376: case 409: /* Conflict */
377: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
378: me->reason, (int) strlen(me->reason), "HTTPNextState");
379: http->next = HTTP_ERROR;
380: http->result = HT_CONFLICT;
381: break;
382:
383: case 410: /* Gone */
384: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
385: me->reason, (int) strlen(me->reason), "HTTPNextState");
386: http->next = HTTP_ERROR;
387: http->result = HT_ERROR;
388: break;
389:
390: case 411: /* Length Required */
391: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
392: me->reason, (int) strlen(me->reason), "HTTPNextState");
393: http->next = HTTP_ERROR;
394: http->result = HT_LENGTH_REQUIRED;
395: break;
396:
397: case 412: /* Precondition failed */
398: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
399: me->reason, (int) strlen(me->reason), "HTTPNextState");
400: http->next = HTTP_ERROR;
401: http->result = HT_ERROR;
402: break;
403:
404: case 413: /* Request entity too large */
405: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
406: me->reason, (int) strlen(me->reason), "HTTPNextState");
407: http->next = HTTP_ERROR;
408: http->result = HT_ERROR;
409: break;
410:
411: case 414: /* Request-URI too long */
412: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
413: me->reason, (int) strlen(me->reason), "HTTPNextState");
414: http->next = HTTP_ERROR;
415: http->result = HT_ERROR;
416: break;
417:
418: case 415: /* Unsupported */
419: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
420: me->reason, (int) strlen(me->reason), "HTTPNextState");
421: http->next = HTTP_ERROR;
422: http->result = HT_ERROR;
1.78 frystyk 423: break;
424:
1.152 ! frystyk 425: case 416: /* Request Range not satisfiable */
! 426: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_RANGE,
! 427: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 428: http->next = HTTP_ERROR;
! 429: http->result = HT_ERROR;
! 430: break;
! 431:
! 432: case 417: /* Expectation Failed */
! 433: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_EXPECTATION_FAILED,
! 434: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 435: http->next = HTTP_ERROR;
! 436: http->result = HT_ERROR;
! 437: break;
! 438:
! 439: case 418: /* Reauthentication required */
! 440: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_REAUTH,
! 441: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 442: http->next = HTTP_ERROR;
! 443: http->result = HT_ERROR;
! 444: break;
! 445:
! 446: case 419: /* Proxy Reauthentication required */
! 447: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PROXY_REAUTH,
! 448: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 449: http->next = HTTP_ERROR;
! 450: http->result = HT_ERROR;
! 451: break;
! 452:
1.71 frystyk 453: case 500:
1.104 frystyk 454: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 455: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 456: http->next = HTTP_ERROR;
457: http->result = HT_ERROR;
1.78 frystyk 458: break;
459:
1.71 frystyk 460: case 501:
1.104 frystyk 461: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 462: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 463: http->next = HTTP_ERROR;
464: http->result = HT_ERROR;
1.78 frystyk 465: break;
466:
467: case 502:
1.104 frystyk 468: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 469: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 470: http->next = HTTP_ERROR;
471: http->result = HT_ERROR;
1.78 frystyk 472: break;
473:
474: case 503:
1.104 frystyk 475: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 476: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 477: http->next = HTTP_ERROR;
1.81 frystyk 478:
1.140 frystyk 479: /*
480: ** If Retry-After header is found then return HT_RETRY else HT_ERROR.
481: ** The caller may want to reissue the request at a later point in time.
482: */
483: {
484: HTResponse * response = HTRequest_response(me->request);
485: if (HTResponse_retryTime(response))
486: http->result = HT_RETRY;
487: else
488: http->result = HT_ERROR;
489: }
1.78 frystyk 490: break;
491:
492: case 504:
1.104 frystyk 493: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 494: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 495: http->next = HTTP_ERROR;
496: http->result = HT_ERROR;
497: break;
498:
499: case 505: /* Unsupported protocol version */
500: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
1.152 ! frystyk 501: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 502: http->next = HTTP_ERROR;
! 503: http->result = HT_BAD_VERSION;
! 504: break;
! 505:
! 506: case 506: /* Partial update Not Implemented */
! 507: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NO_PARTIAL_UPDATE,
1.134 frystyk 508: me->reason, (int) strlen(me->reason), "HTTPNextState");
509: http->next = HTTP_ERROR;
510: http->result = HT_BAD_VERSION;
1.71 frystyk 511: break;
1.78 frystyk 512:
1.71 frystyk 513: default: /* bad number */
1.104 frystyk 514: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 515: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 frystyk 516: http->next = HTTP_ERROR;
517: http->result = HT_ERROR;
1.71 frystyk 518: break;
1.55 frystyk 519: }
520: }
521:
1.71 frystyk 522: /* ------------------------------------------------------------------------- */
523: /* HTTP Status Line Stream */
524: /* ------------------------------------------------------------------------- */
1.55 frystyk 525:
1.71 frystyk 526: /*
1.141 frystyk 527: ** Analyze the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 528: ** then create a MIME-stream, else create a Guess stream to find out
529: ** what the 0.9 server is sending. We need to copy the buffer as we don't
530: ** know if we can modify the contents or not.
1.78 frystyk 531: **
532: ** Stream handling is a function of the status code returned from the
533: ** server:
534: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 535: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 536: **
537: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 538: */
1.100 frystyk 539: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 540: {
1.136 frystyk 541: HTRequest * request = me->request;
542: HTNet * net = HTRequest_net(request);
1.123 frystyk 543: HTHost * host = HTNet_host(net);
1.141 frystyk 544:
1.80 frystyk 545: if (me->target) {
546: int status = PUTBLOCK(me->buffer, me->buflen);
547: if (status == HT_OK)
548: me->transparent = YES;
549: return status;
1.136 frystyk 550: } else if (HTRequest_isSource(request)&&!HTRequest_outputStream(request)) {
1.88 frystyk 551: /*
552: ** We need to wait for the destinations to get ready
553: */
554: return HT_WOULD_BLOCK;
1.80 frystyk 555: }
1.88 frystyk 556:
1.132 frystyk 557: /*
558: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
559: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
1.141 frystyk 560:
1.132 frystyk 561: */
562: #if 0
1.81 frystyk 563: if (strncasecomp(me->buffer, "http/", 5)) {
1.132 frystyk 564: #else
565: if (strncasecomp(me->buffer, "http", 4)) {
566: #endif
1.80 frystyk 567: int status;
1.136 frystyk 568: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 569: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 570: me->target = HTStreamStack(WWW_UNKNOWN,
571: HTRequest_outputFormat(request),
572: HTRequest_outputStream(request),
573: request, NO);
1.134 frystyk 574: me->http->next = HTTP_OK;
1.80 frystyk 575: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
576: me->transparent = YES;
1.123 frystyk 577: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 578: return status;
579: } else {
1.140 frystyk 580: HTResponse * response = HTRequest_response(request);
1.133 frystyk 581: char *ptr = me->buffer+4; /* Skip the HTTP part */
1.81 frystyk 582: me->version = HTNextField(&ptr);
1.149 frystyk 583: HTHost_setConsumed(HTNet_host(net), me->buflen - me->startLen);
1.95 frystyk 584:
1.130 frystyk 585: /* Here we want to find out when to use persistent connection */
1.133 frystyk 586: if (!strncasecomp(me->version, "/1.0", 4)) {
1.128 frystyk 587: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
588: HTHost_setVersion(host, HTTP_10);
1.133 frystyk 589: } else if (!strncasecomp(me->version, "/1.", 3)) { /* 1.x family */
1.128 frystyk 590: HTHost_setVersion(host, HTTP_11);
1.141 frystyk 591: #ifdef HT_MUX
592: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE);
593: #else
1.147 frystyk 594: if (ConnectionMode & HTTP_NO_PIPELINING) {
595: if (PROT_TRACE) HTTrace("HTTP........ Mode is HTTP/1.1 WITH NO PIPELINING\n");
596: HTNet_setPersistent(net, YES, HT_TP_SINGLE);
597: } else if (ConnectionMode & HTTP_FORCE_10) {
598: if (PROT_TRACE) HTTrace("HTTP........ Mode is FORCE HTTP/1.0\n");
599: HTHost_setVersion(host, HTTP_10);
600: HTNet_setPersistent(net, NO, HT_TP_SINGLE);
601: } else
602: HTNet_setPersistent(net, YES, HT_TP_PIPELINE);
1.145 frystyk 603: #endif /* HT_MUX */
1.133 frystyk 604: } else {
605: if (PROT_TRACE)HTTrace("HTTP Status. No 1.x version number - treat it as a HTTP/1.0 server\n");
606: HTHost_setVersion(host, HTTP_10);
1.128 frystyk 607: }
1.95 frystyk 608:
1.81 frystyk 609: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 610: /* Kludge to fix the NCSA server version bug */
611: if (me->status == 0) me->status = atoi(me->version);
612:
1.81 frystyk 613: me->reason = ptr;
614: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
615: *ptr = '0円';
616: else if ((ptr = strchr(me->reason, '\n')) != NULL)
617: *ptr = '0円';
618:
1.130 frystyk 619: /*
620: ** If it is a 1xx code then find out what to do and return until we
621: ** get the next code. In the case of Upgrade we may not get back here
622: ** at all. If we are uploading an entity then continue doing that
623: */
624: if (me->status/100 == 1) {
1.136 frystyk 625: if (HTTPInformation(me) == YES) {
626: me->buflen = 0;
627: me->state = EOL_BEGIN;
1.150 frystyk 628: me->target = HTStreamStack(WWW_MIME_CONT,
629: HTRequest_debugFormat(request),
630: HTRequest_debugStream(request),
631: request, NO);
1.136 frystyk 632: return HTMethod_hasEntity(HTRequest_method(request)) ?
633: HT_CONTINUE : HT_OK;
1.103 frystyk 634: }
1.56 frystyk 635: }
1.133 frystyk 636:
637: /*
638: ** As we are getting fresh metainformation in the HTTP response,
639: ** we clear the old metainfomation in order not to mix it with the new
640: ** one. This is particularly important for the content-length and the
1.139 frystyk 641: ** like. The TRACE and OPTIONS method just adds to the current
642: ** metainformation so in that case we don't clear the anchor.
1.133 frystyk 643: */
1.136 frystyk 644: if (me->status==200 || me->status==203 || me->status==300) {
1.140 frystyk 645: /*
646: ** 200, 203 and 300 are all fully cacheable responses. No byte
647: ** ranges or anything else make life hard in this case.
648: */
1.148 frystyk 649: HTAnchor_clearHeader(HTRequest_anchor(request));
1.140 frystyk 650: HTResponse_setCachable(response, YES);
1.136 frystyk 651: me->target = HTStreamStack(WWW_MIME,
652: HTRequest_outputFormat(request),
653: HTRequest_outputStream(request),
654: request, NO);
1.140 frystyk 655: } else if (me->status==206) {
656: /*
657: ** We got a partial response and now we must check whether
658: ** we issued a cache If-Range request or it was a new
659: ** partial response which we don't have in cache. In the latter
660: ** case, we don't cache the object and in the former we append
661: ** the result to the already existing cache entry.
662: */
663: HTReload reload = HTRequest_reloadMode(request);
664: if (reload == HT_CACHE_RANGE_VALIDATE) {
665: HTResponse_setCachable(response, YES);
666: me->target = HTStreamStack(WWW_MIME_PART,
667: HTRequest_outputFormat(request),
668: HTRequest_outputStream(request),
669: request, NO);
670: } else {
1.149 frystyk 671: HTAnchor_clearHeader(HTRequest_anchor(request));
1.140 frystyk 672: me->target = HTStreamStack(WWW_MIME,
673: HTRequest_outputFormat(request),
674: HTRequest_outputStream(request),
675: request, NO);
676: }
1.139 frystyk 677: } else if (me->status==204 || me->status==304) {
1.140 frystyk 678: HTResponse_setCachable(response, YES);
1.136 frystyk 679: me->target = HTStreamStack(WWW_MIME_HEAD,
680: HTRequest_debugFormat(request),
681: HTRequest_debugStream(request),
682: request, NO);
683: } else if (HTRequest_debugStream(request)) {
684: me->target = HTStreamStack(WWW_MIME,
685: HTRequest_debugFormat(request),
686: HTRequest_debugStream(request),
687: request, NO);
688: } else {
1.140 frystyk 689: /*
690: ** We still need to parse the MIME part in order to find any
691: ** valuable meta information which is needed from the response.
692: */
1.136 frystyk 693: me->target = HTStreamStack(WWW_MIME,
694: HTRequest_debugFormat(request),
695: HTRequest_debugStream(request),
696: request, NO);
1.133 frystyk 697: }
1.56 frystyk 698: }
1.113 frystyk 699: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 700: HTTPNextState(me); /* Get next state */
1.80 frystyk 701: me->transparent = YES;
702: return HT_OK;
1.71 frystyk 703: }
1.56 frystyk 704:
1.80 frystyk 705: /*
706: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
707: ** is found
708: */
1.119 frystyk 709: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 710: {
1.150 frystyk 711: int status = HT_OK;
1.146 frystyk 712: me->startLen = me->buflen;
1.80 frystyk 713: while (!me->transparent && l-- > 0) {
714: if (me->target) {
1.150 frystyk 715: if (me->cont) {
716: FREE_TARGET;
717: me->target = NULL;
718: l++;
719: } else {
720: if ((status = stream_pipe(me)) == HT_CONTINUE) {
721: b++; break;
722: }
723: if (status != HT_OK) return status;
724: }
1.80 frystyk 725: } else {
726: *(me->buffer+me->buflen++) = *b;
727: if (me->state == EOL_FCR) {
728: if (*b == LF) { /* Line found */
1.150 frystyk 729: if ((status = stream_pipe(me)) == HT_CONTINUE) {
730: me->cont = YES;
731: b++; break;
732: }
733: if (status != HT_OK) return status;
1.80 frystyk 734: } else {
735: me->state = EOL_BEGIN;
736: }
737: } else if (*b == CR) {
738: me->state = EOL_FCR;
739: } else if (*b == LF) {
1.150 frystyk 740: if ((status = stream_pipe(me)) == HT_CONTINUE) {
741: me->cont = YES;
742: b++; break;
743: }
744: if (status != HT_OK) return status;
1.71 frystyk 745: } else {
1.80 frystyk 746: if (me->buflen >= MAX_STATUS_LEN) {
1.150 frystyk 747: if ((status = stream_pipe(me)) == HT_CONTINUE) {
748: me->cont = YES;
749: b++; break;
750: }
751: if (status != HT_OK) return status;
1.80 frystyk 752: }
1.71 frystyk 753: }
1.80 frystyk 754: b++;
1.71 frystyk 755: }
1.56 frystyk 756: }
1.99 frystyk 757: if (l > 0) return PUTBLOCK(b, l);
1.150 frystyk 758: return status;
1.56 frystyk 759: }
760:
1.119 frystyk 761: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 762: {
1.80 frystyk 763: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 764: }
1.56 frystyk 765:
1.100 frystyk 766: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 767: {
1.80 frystyk 768: return HTTPStatus_put_block(me, &c, 1);
769: }
770:
1.100 frystyk 771: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 772: {
773: return (*me->target->isa->flush)(me->target);
1.71 frystyk 774: }
775:
1.100 frystyk 776: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 777: {
1.87 frystyk 778: int status = HT_OK;
779: if (me->target) {
780: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
781: return HT_WOULD_BLOCK;
782: }
1.115 frystyk 783: HT_FREE(me);
1.100 frystyk 784: return status;
1.71 frystyk 785: }
786:
1.104 frystyk 787: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 788: {
789: if (me->target)
1.74 frystyk 790: ABORT_TARGET;
1.115 frystyk 791: HT_FREE(me);
1.74 frystyk 792: if (PROT_TRACE)
1.116 eric 793: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 794: return HT_ERROR;
1.71 frystyk 795: }
796:
797: /* HTTPStatus Stream
798: ** -----------------
799: */
1.119 frystyk 800: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 801: {
802: "HTTPStatus",
1.80 frystyk 803: HTTPStatus_flush,
1.71 frystyk 804: HTTPStatus_free,
805: HTTPStatus_abort,
806: HTTPStatus_put_character,
807: HTTPStatus_put_string,
808: HTTPStatus_put_block
809: };
810:
1.113 frystyk 811: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
812: void * param,
813: HTFormat input_format,
814: HTFormat output_format,
815: HTStream * output_stream)
1.71 frystyk 816: {
1.115 frystyk 817: HTStream * me;
818: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
819: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 820: me->isa = &HTTPStatusClass;
1.113 frystyk 821: if (request) {
1.126 frystyk 822: HTNet * net = HTRequest_net(request);
1.125 frystyk 823: /* Get existing copy */
824: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 825: me->request = request;
826: me->http = http;
827: http->next = HTTP_ERROR;
828: me->state = EOL_BEGIN;
829: return me;
830: } else
831: return HTErrorStream();
1.71 frystyk 832: }
833:
834: /* ------------------------------------------------------------------------- */
835:
836: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 837: ** ==============================
838: **
839: ** Given a hypertext address, this routine loads a document.
840: **
841: ** On entry,
842: ** request This is the request structure
1.94 frystyk 843: ** returns HT_ERROR Error has occured in call back
844: ** HT_OK Call back was OK
1.55 frystyk 845: */
1.141 frystyk 846: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type);
847:
848: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request)
1.55 frystyk 849: {
850: http_info *http; /* Specific protocol information */
1.112 frystyk 851: HTParentAnchor *anchor = HTRequest_anchor(request);
1.141 frystyk 852: HTNet * net = HTRequest_net(request);
1.112 frystyk 853:
1.94 frystyk 854: /*
855: ** Initiate a new http structure and bind to request structure
856: ** This is actually state HTTP_BEGIN, but it can't be in the state
857: ** machine as we need the structure first.
858: */
1.141 frystyk 859: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
860: HTAnchor_physical(anchor));
861: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
862: HT_OUTOFMEM("HTLoadHTTP");
863: http->net = net;
864: HTNet_setContext(net, http);
865: HTNet_setEventCallback(net, HTTPEvent);
866: HTNet_setEventParam(net, http); /* callbacks get http* */
867:
868: return HTTPEvent(soc, http, HTEvent_BEGIN); /* get it started - ops is ignored */
869: }
870:
871: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type)
872: {
873: http_info * http = (http_info *)pVoid;
874: int status = HT_ERROR;
875: HTNet * net = http->net;
876: HTRequest * request = HTNet_request(net);
1.144 frystyk 877: HTParentAnchor * anchor = HTRequest_anchor(request);
878: HTHost * host = HTNet_host(net);
1.141 frystyk 879:
880: /*
881: ** Check whether we have been interrupted
882: */
883: if (type == HTEvent_BEGIN) {
1.134 frystyk 884: http->next = HTTP_OK;
885: http->result = HT_ERROR;
1.141 frystyk 886: } else if (type == HTEvent_CLOSE) {
1.112 frystyk 887: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
888: NULL, 0, "HTLoadHTTP");
889: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 890: return HT_OK;
1.141 frystyk 891: } else if (type == HTEvent_END) {
892: HTTPCleanup(request, http->result);
893: return HT_OK;
894: } else if (type == HTEvent_RESET) {
895: HTTPCleanup(request, HT_RECOVER_PIPE);
1.145 frystyk 896: http->state = HTTP_BEGIN;
1.141 frystyk 897: return HT_OK;
898: }
899:
1.71 frystyk 900: /* Now jump into the machine. We know the state from the previous run */
901: while (1) {
902: switch (http->state) {
1.134 frystyk 903: case HTTP_BEGIN:
1.144 frystyk 904: status = HTHost_connect(host, net, HTAnchor_physical(anchor), HTTP_PORT);
905: host = HTNet_host(net);
1.80 frystyk 906: if (status == HT_OK) {
1.140 frystyk 907:
1.123 frystyk 908: /*
1.140 frystyk 909: ** Check the protocol class to see if we have connected to a
910: ** the right class of server, in this case HTTP. If we don't
911: ** know the server then assume a HTTP/1.0
1.123 frystyk 912: */
913: {
914: char * s_class = HTHost_class(host);
1.140 frystyk 915: if (!s_class) {
916: if (HTRequest_proxy(request) == NULL)
917: HTRequest_addConnection(request, "Keep-Alive", "");
918: HTHost_setClass(host, "http");
919: } else if (strcasecomp(s_class, "http")) {
1.123 frystyk 920: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
921: NULL, 0, "HTLoadHTTP");
922: http->state = HTTP_ERROR;
923: break;
924: }
1.95 frystyk 925: }
1.147 frystyk 926:
927: if (ConnectionMode & HTTP_NO_PIPELINING) {
928: if (PROT_TRACE) HTTrace("HTTP........ Mode is HTTP/1.1 WITH NO PIPELINING\n");
929: HTRequest_setFlush(request, YES);
930: } else if (ConnectionMode & HTTP_FORCE_10) {
931: if (PROT_TRACE) HTTrace("HTTP........ Mode is FORCE HTTP/1.0\n");
932: HTHost_setVersion(host, HTTP_10);
933: }
934:
1.151 frystyk 935: if (HTNet_preemptive(net)) {
936: if (PROT_TRACE) HTTrace("HTTP........ Force flush on preemptive load\n");
937: HTRequest_setFlush(request, YES);
938: }
939:
1.147 frystyk 940: /* Jump to next state */
1.144 frystyk 941: http->state = HTTP_NEED_STREAM;
942: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
943: return HT_OK;
944: else
945: http->state = HTTP_ERROR; /* Error or interrupt */
946: break;
947:
948: case HTTP_NEED_STREAM:
1.138 frystyk 949:
1.144 frystyk 950: #if 0
951: HTChannel_upSemaphore(host->channel);
952: #endif
953:
954: /*
955: ** Create the stream pipe FROM the channel to the application.
956: ** The target for the input stream pipe is set up using the
957: ** stream stack.
958: */
959: {
960: HTStream *me=HTStreamStack(WWW_HTTP,
961: HTRequest_outputFormat(request),
962: HTRequest_outputStream(request),
963: request, YES);
964: HTNet_setReadStream(net, me);
965: HTRequest_setOutputConnected(request, YES);
966: }
1.127 frystyk 967:
1.144 frystyk 968: /*
969: ** Create the stream pipe TO the channel from the application
970: ** and hook it up to the request object
971: */
972: {
973: HTChannel * channel = HTHost_channel(host);
974: HTOutputStream * output = HTChannel_getChannelOStream(channel);
975: int version = HTHost_version(host);
976: HTStream * app = NULL;
977:
1.123 frystyk 978: /*
1.144 frystyk 979: ** Instead of calling this directly we could have a
980: ** stream stack builder on the output stream as well
1.123 frystyk 981: */
1.141 frystyk 982: #ifdef HT_MUX
1.144 frystyk 983: output = (HTOutputStream *)
984: HTBuffer_new(HTMuxWriter_new(host, net, output), request, 512);
1.141 frystyk 985: #endif
986:
1.139 frystyk 987: #ifdef HTTP_DUMP
1.144 frystyk 988: if (PROT_TRACE) {
1.147 frystyk 989: FILE * htfp = NULL;
990: if ((htfp = fopen(HTTP_OUTPUT, "ab")) != NULL) {
1.144 frystyk 991: output = (HTOutputStream *)
1.147 frystyk 992: HTTee((HTStream *) output, HTFWriter_new(request, htfp, NO), NULL);
993: HTTrace("HTTP........ Dumping request to `%s\'\n", HTTP_OUTPUT);
1.144 frystyk 994: }
995: }
1.139 frystyk 996: #endif /* HTTP_DUMP */
1.144 frystyk 997: app = HTMethod_hasEntity(HTRequest_method(request)) ?
998: HTMIMERequest_new(request,
999: HTTPRequest_new(request, (HTStream *) output, NO,
1000: version),
1001: YES) :
1002: HTTPRequest_new(request, (HTStream *) output, YES, version);
1003: HTRequest_setInputStream(request, app);
1004: }
1.88 frystyk 1005:
1.144 frystyk 1006: /*
1007: ** Set up concurrent read/write if this request isn't the
1008: ** source for a PUT or POST. As source we don't start reading
1009: ** before all destinations are ready. If destination then
1010: ** register the input stream and get ready for read
1011: */
1012: if (HTRequest_isDestination(request)) {
1013: HTHost_register(host, net, HTEvent_READ);
1014: HTRequest_linkDestination(request);
1015: }
1016: http->state = HTTP_CONNECTED;
1017: type = HTEvent_WRITE; /* fresh, so try a write */
1.71 frystyk 1018: break;
1019:
1.87 frystyk 1020: /* As we can do simultanous read and write this is now one state */
1.141 frystyk 1021: case HTTP_CONNECTED:
1022: if (type == HTEvent_WRITE) {
1023: if (HTRequest_isDestination(request)) {
1024: HTRequest * source = HTRequest_source(request);
1025: HTNet * srcnet = HTRequest_net(source);
1026: if (srcnet) {
1.149 frystyk 1027: HTHost_register(HTNet_host(srcnet), srcnet, HTEvent_READ);
1028: HTHost_unregister(HTNet_host(srcnet), srcnet, HTEvent_WRITE);
1.141 frystyk 1029: }
1030: return HT_OK;
1031: }
1.126 frystyk 1032:
1033: /*
1034: ** Should we use the input stream directly or call the post
1035: ** callback function to send data down to the network?
1036: */
1037: {
1038: HTStream * input = HTRequest_inputStream(request);
1039: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 1040: if (pcbf) {
1.139 frystyk 1041: if (http->lock)
1042: return HT_OK;
1043: else {
1.141 frystyk 1044: status = (*pcbf)(request, input);
1.140 frystyk 1045: if (status == HT_PAUSE || status == HT_LOADED) {
1.141 frystyk 1046: type = HTEvent_READ;
1.139 frystyk 1047: http->lock = YES;
1.141 frystyk 1048: } else if (status==HT_CLOSED)
1049: http->state = HTTP_RECOVER_PIPE;
1050: else if (status == HT_ERROR) {
1.139 frystyk 1051: http->result = HT_INTERRUPTED;
1052: http->state = HTTP_ERROR;
1053: break;
1054: }
1055: }
1.131 frystyk 1056: } else {
1.142 frystyk 1057: /*
1058: ** Check to see if we can start a new request
1059: ** pending in the host object.
1060: */
1.144 frystyk 1061: HTHost_launchPending(host);
1.142 frystyk 1062: status = HTRequest_flush(request) ?
1.144 frystyk 1063: HTHost_forceFlush(host) : (*input->isa->flush)(input);
1.141 frystyk 1064: type = HTEvent_READ;
1.131 frystyk 1065: }
1066: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 1067: }
1.141 frystyk 1068: } else if (type == HTEvent_FLUSH) {
1069: HTStream * input = HTRequest_inputStream(request);
1070: if (input == NULL)
1071: return HT_ERROR;
1072: return (*input->isa->flush)(input);
1073: } else if (type == HTEvent_READ) {
1.144 frystyk 1074: status = HTHost_read(host, net);
1.131 frystyk 1075: if (status == HT_WOULD_BLOCK)
1.94 frystyk 1076: return HT_OK;
1.131 frystyk 1077: else if (status == HT_CONTINUE) {
1.130 frystyk 1078: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
1.139 frystyk 1079: http->lock = NO;
1.141 frystyk 1080: type = HTEvent_WRITE;
1.130 frystyk 1081: continue;
1.133 frystyk 1082: } else if (status==HT_LOADED)
1.141 frystyk 1083: http->state = http->next; /* Jump to next state (OK or ERROR) */
1084: else if (status==HT_CLOSED)
1085: http->state = HTTP_RECOVER_PIPE;
1086: else
1.94 frystyk 1087: http->state = HTTP_ERROR;
1.90 frystyk 1088: } else {
1.141 frystyk 1089: http->state = HTTP_ERROR; /* don't know how to handle OOB */
1.90 frystyk 1090: }
1.71 frystyk 1091: break;
1.141 frystyk 1092:
1.134 frystyk 1093: case HTTP_OK:
1.88 frystyk 1094: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 1095: if (HTRequest_isDestination(request)) {
1.126 frystyk 1096: HTRequest * source = HTRequest_source(request);
1.91 frystyk 1097: HTLink *link =
1.127 frystyk 1098: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 1099: (HTAnchor *) anchor);
1.109 frystyk 1100: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 1101: }
1.112 frystyk 1102: }
1.134 frystyk 1103: HTTPCleanup(request, http->result);
1.94 frystyk 1104: return HT_OK;
1.71 frystyk 1105: break;
1.141 frystyk 1106:
1107: case HTTP_RECOVER_PIPE:
1108: {
1109: /*
1110: ** If this is a persistent connection and we get a close
1111: ** then it is an error and we should recover from it by
1112: ** restarting the pipe line of requests if any
1113: */
1.151 frystyk 1114: if (HTHost_isPersistent(host) && !HTHost_closeNotification(host)) {
1.143 frystyk 1115: if (host == NULL) return HT_ERROR;
1.144 frystyk 1116: HTRequest_setFlush(request, YES);
1117: HTHost_recoverPipe(host);
1118: http->state = HTTP_BEGIN;
1119: HTHost_launchPending(host);
1120: return HT_OK;
1.141 frystyk 1121: } else
1122: http->state = HTTP_OK;
1123: }
1.143 frystyk 1124: break;
1.141 frystyk 1125:
1.71 frystyk 1126: case HTTP_ERROR:
1.143 frystyk 1127: if (HTRequest_isPostWeb(request)) {
1128: if (HTRequest_isDestination(request)) {
1129: HTRequest * source = HTRequest_source(request);
1130: HTLink *link =
1131: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1132: (HTAnchor *) anchor);
1133: HTLink_setResult(link, HT_LINK_ERROR);
1134: }
1135: HTRequest_killPostWeb(request);
1136: }
1137: HTTPCleanup(request, http->result);
1138: return HT_OK;
1139: break;
1140:
1.141 frystyk 1141: default:
1142: HTTrace("bad http state %d.\n", http->state);
1143: HTDebugBreak();
1.71 frystyk 1144: }
1145: } /* End of while(1) */
1146: }
1.88 frystyk 1147:
1.147 frystyk 1148: PUBLIC void HTTP_setConnectionMode (HTTPConnectionMode mode)
1149: {
1150: ConnectionMode = mode;
1151: }
1152:
1153: PUBLIC HTTPConnectionMode HTTP_connectionMode (void)
1154: {
1155: return ConnectionMode;
1156: }
1.21 luotonen 1157:
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