Annotation of libwww/Library/src/HTTP.c, revision 1.155
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.
1.155 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.154 1997年12月22日 14:46:18 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) {
1.153 frystyk 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;
1.155 ! frystyk 317: http->result = -400;
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;
1.155 ! frystyk 331: http->result = -402;
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;
1.155 ! frystyk 345: http->result = -404;
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;
1.155 ! frystyk 352: http->result = -405;
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;
1.155 ! frystyk 373: http->result = -408;
1.134 frystyk 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;
1.155 ! frystyk 387: http->result = -410;
1.134 frystyk 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;
1.155 ! frystyk 401: http->result = -412;
1.134 frystyk 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;
1.155 ! frystyk 408: http->result = -413;
1.134 frystyk 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;
1.155 ! frystyk 415: http->result = -414;
1.134 frystyk 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;
1.155 ! frystyk 422: http->result = -415;
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;
1.155 ! frystyk 429: http->result = -416;
1.152 frystyk 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;
1.155 ! frystyk 436: http->result = -417;
1.152 frystyk 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;
1.155 ! frystyk 443: http->result = -418;
1.152 frystyk 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;
1.155 ! frystyk 450: http->result = -419;
1.152 frystyk 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;
1.155 ! frystyk 457: http->result = -500;
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;
1.155 ! frystyk 464: http->result = -501;
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;
1.155 ! frystyk 471: http->result = -502;
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
1.155 ! frystyk 488: http->result = -500;
1.140 frystyk 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;
1.155 ! frystyk 496: http->result = -504;
1.134 frystyk 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;
1.155 ! frystyk 517: http->result = -(me->status);
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: }
1.153 frystyk 556:
557: #if 0
558: {
559: char * uri = HTAnchor_address((HTAnchor *) HTRequest_anchor(request));
560: fprintf(stderr, "HTTP header: %s for '%s'\n", me->buffer, uri);
561: HT_FREE(uri);
562: }
563: #endif
564:
1.132 frystyk 565: /*
566: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
567: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
1.141 frystyk 568:
1.132 frystyk 569: */
570: if (strncasecomp(me->buffer, "http", 4)) {
1.80 frystyk 571: int status;
1.136 frystyk 572: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 573: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 574: me->target = HTStreamStack(WWW_UNKNOWN,
575: HTRequest_outputFormat(request),
576: HTRequest_outputStream(request),
577: request, NO);
1.134 frystyk 578: me->http->next = HTTP_OK;
1.80 frystyk 579: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
580: me->transparent = YES;
1.123 frystyk 581: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 582: return status;
583: } else {
1.140 frystyk 584: HTResponse * response = HTRequest_response(request);
1.155 ! frystyk 585: char * ptr = me->buffer+5; /* Skip the HTTP part */
! 586: char * vptr = NULL;
! 587: int major = 0;
! 588: int minor = 0;
! 589: me->version = vptr = HTNextField(&ptr);
! 590: if (vptr) {
! 591: major = (int) strtol(me->version, &vptr, 10);
! 592: if (vptr++) minor = strtol(vptr, NULL, 10);
! 593: }
1.95 frystyk 594:
1.130 frystyk 595: /* Here we want to find out when to use persistent connection */
1.155 ! frystyk 596: if (major > 1) {
! 597: if (PROT_TRACE)HTTrace("HTTP Status. Major version number is %d\n", major);
! 598: me->target = HTErrorStream();
! 599: me->status = 999999;
! 600: HTTPNextState(me); /* Get next state */
! 601: return HT_OK;
! 602: } else if (minor <= 0) {
! 603: if (PROT_TRACE)HTTrace("HTTP Status. This is an HTTP/1.0 server\n");
1.128 frystyk 604: HTHost_setVersion(host, HTTP_10);
1.155 ! frystyk 605: } else { /* 1.x, x>0 family */
! 606: HTHost_setVersion(host, HTTP_11); /* Best we can do */
1.141 frystyk 607: #ifdef HT_MUX
608: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE);
609: #else
1.147 frystyk 610: if (ConnectionMode & HTTP_NO_PIPELINING) {
1.155 ! frystyk 611: if (PROT_TRACE) HTTrace("HTTP........ Mode is HTTP/1.x WITH NO PIPELINING\n");
1.147 frystyk 612: HTNet_setPersistent(net, YES, HT_TP_SINGLE);
613: } else if (ConnectionMode & HTTP_FORCE_10) {
614: if (PROT_TRACE) HTTrace("HTTP........ Mode is FORCE HTTP/1.0\n");
615: HTHost_setVersion(host, HTTP_10);
616: HTNet_setPersistent(net, NO, HT_TP_SINGLE);
617: } else
618: HTNet_setPersistent(net, YES, HT_TP_PIPELINE);
1.145 frystyk 619: #endif /* HT_MUX */
1.128 frystyk 620: }
1.95 frystyk 621:
1.81 frystyk 622: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 623: /* Kludge to fix the NCSA server version bug */
624: if (me->status == 0) me->status = atoi(me->version);
625:
1.81 frystyk 626: me->reason = ptr;
627: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
628: *ptr = '0円';
629: else if ((ptr = strchr(me->reason, '\n')) != NULL)
630: *ptr = '0円';
631:
1.130 frystyk 632: /*
633: ** If it is a 1xx code then find out what to do and return until we
634: ** get the next code. In the case of Upgrade we may not get back here
635: ** at all. If we are uploading an entity then continue doing that
636: */
637: if (me->status/100 == 1) {
1.136 frystyk 638: if (HTTPInformation(me) == YES) {
639: me->buflen = 0;
640: me->state = EOL_BEGIN;
1.150 frystyk 641: me->target = HTStreamStack(WWW_MIME_CONT,
642: HTRequest_debugFormat(request),
643: HTRequest_debugStream(request),
644: request, NO);
1.136 frystyk 645: return HTMethod_hasEntity(HTRequest_method(request)) ?
646: HT_CONTINUE : HT_OK;
1.103 frystyk 647: }
1.56 frystyk 648: }
1.133 frystyk 649:
650: /*
651: ** As we are getting fresh metainformation in the HTTP response,
652: ** we clear the old metainfomation in order not to mix it with the new
653: ** one. This is particularly important for the content-length and the
1.139 frystyk 654: ** like. The TRACE and OPTIONS method just adds to the current
655: ** metainformation so in that case we don't clear the anchor.
1.133 frystyk 656: */
1.136 frystyk 657: if (me->status==200 || me->status==203 || me->status==300) {
1.140 frystyk 658: /*
659: ** 200, 203 and 300 are all fully cacheable responses. No byte
660: ** ranges or anything else make life hard in this case.
661: */
1.148 frystyk 662: HTAnchor_clearHeader(HTRequest_anchor(request));
1.140 frystyk 663: HTResponse_setCachable(response, YES);
1.136 frystyk 664: me->target = HTStreamStack(WWW_MIME,
665: HTRequest_outputFormat(request),
666: HTRequest_outputStream(request),
667: request, NO);
1.140 frystyk 668: } else if (me->status==206) {
669: /*
670: ** We got a partial response and now we must check whether
671: ** we issued a cache If-Range request or it was a new
672: ** partial response which we don't have in cache. In the latter
673: ** case, we don't cache the object and in the former we append
674: ** the result to the already existing cache entry.
675: */
676: HTReload reload = HTRequest_reloadMode(request);
677: if (reload == HT_CACHE_RANGE_VALIDATE) {
678: HTResponse_setCachable(response, YES);
679: me->target = HTStreamStack(WWW_MIME_PART,
680: HTRequest_outputFormat(request),
681: HTRequest_outputStream(request),
682: request, NO);
683: } else {
1.149 frystyk 684: HTAnchor_clearHeader(HTRequest_anchor(request));
1.140 frystyk 685: me->target = HTStreamStack(WWW_MIME,
686: HTRequest_outputFormat(request),
687: HTRequest_outputStream(request),
688: request, NO);
689: }
1.139 frystyk 690: } else if (me->status==204 || me->status==304) {
1.140 frystyk 691: HTResponse_setCachable(response, YES);
1.136 frystyk 692: me->target = HTStreamStack(WWW_MIME_HEAD,
693: HTRequest_debugFormat(request),
694: HTRequest_debugStream(request),
695: request, NO);
696: } else if (HTRequest_debugStream(request)) {
697: me->target = HTStreamStack(WWW_MIME,
698: HTRequest_debugFormat(request),
699: HTRequest_debugStream(request),
700: request, NO);
701: } else {
1.140 frystyk 702: /*
703: ** We still need to parse the MIME part in order to find any
704: ** valuable meta information which is needed from the response.
705: */
1.136 frystyk 706: me->target = HTStreamStack(WWW_MIME,
707: HTRequest_debugFormat(request),
708: HTRequest_debugStream(request),
709: request, NO);
1.133 frystyk 710: }
1.56 frystyk 711: }
1.113 frystyk 712: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 713: HTTPNextState(me); /* Get next state */
1.80 frystyk 714: me->transparent = YES;
715: return HT_OK;
1.71 frystyk 716: }
1.56 frystyk 717:
1.80 frystyk 718: /*
719: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
720: ** is found
721: */
1.119 frystyk 722: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 723: {
1.150 frystyk 724: int status = HT_OK;
1.153 frystyk 725: int length = l;
1.146 frystyk 726: me->startLen = me->buflen;
1.80 frystyk 727: while (!me->transparent && l-- > 0) {
728: if (me->target) {
1.150 frystyk 729: if (me->cont) {
730: FREE_TARGET;
731: me->target = NULL;
732: l++;
733: } else {
734: if ((status = stream_pipe(me)) == HT_CONTINUE) {
735: b++; break;
736: }
737: if (status != HT_OK) return status;
738: }
1.80 frystyk 739: } else {
740: *(me->buffer+me->buflen++) = *b;
741: if (me->state == EOL_FCR) {
742: if (*b == LF) { /* Line found */
1.150 frystyk 743: if ((status = stream_pipe(me)) == HT_CONTINUE) {
744: me->cont = YES;
745: b++; break;
746: }
747: if (status != HT_OK) return status;
1.80 frystyk 748: } else {
749: me->state = EOL_BEGIN;
750: }
751: } else if (*b == CR) {
752: me->state = EOL_FCR;
753: } else if (*b == LF) {
1.150 frystyk 754: if ((status = stream_pipe(me)) == HT_CONTINUE) {
755: me->cont = YES;
756: b++; break;
757: }
758: if (status != HT_OK) return status;
1.71 frystyk 759: } else {
1.80 frystyk 760: if (me->buflen >= MAX_STATUS_LEN) {
1.150 frystyk 761: if ((status = stream_pipe(me)) == HT_CONTINUE) {
762: me->cont = YES;
763: b++; break;
764: }
765: if (status != HT_OK) return status;
1.80 frystyk 766: }
1.71 frystyk 767: }
1.80 frystyk 768: b++;
1.71 frystyk 769: }
1.56 frystyk 770: }
1.153 frystyk 771:
772: if (length != l)
773: HTHost_setConsumed(HTNet_host(HTRequest_net(me->request)), length - l);
774:
1.99 frystyk 775: if (l > 0) return PUTBLOCK(b, l);
1.150 frystyk 776: return status;
1.56 frystyk 777: }
778:
1.119 frystyk 779: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 780: {
1.80 frystyk 781: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 782: }
1.56 frystyk 783:
1.100 frystyk 784: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 785: {
1.80 frystyk 786: return HTTPStatus_put_block(me, &c, 1);
787: }
788:
1.100 frystyk 789: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 790: {
791: return (*me->target->isa->flush)(me->target);
1.71 frystyk 792: }
793:
1.100 frystyk 794: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 795: {
1.87 frystyk 796: int status = HT_OK;
797: if (me->target) {
798: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
799: return HT_WOULD_BLOCK;
800: }
1.115 frystyk 801: HT_FREE(me);
1.100 frystyk 802: return status;
1.71 frystyk 803: }
804:
1.104 frystyk 805: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 806: {
807: if (me->target)
1.74 frystyk 808: ABORT_TARGET;
1.115 frystyk 809: HT_FREE(me);
1.74 frystyk 810: if (PROT_TRACE)
1.116 eric 811: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 812: return HT_ERROR;
1.71 frystyk 813: }
814:
815: /* HTTPStatus Stream
816: ** -----------------
817: */
1.119 frystyk 818: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 819: {
820: "HTTPStatus",
1.80 frystyk 821: HTTPStatus_flush,
1.71 frystyk 822: HTTPStatus_free,
823: HTTPStatus_abort,
824: HTTPStatus_put_character,
825: HTTPStatus_put_string,
826: HTTPStatus_put_block
827: };
828:
1.113 frystyk 829: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
830: void * param,
831: HTFormat input_format,
832: HTFormat output_format,
833: HTStream * output_stream)
1.71 frystyk 834: {
1.115 frystyk 835: HTStream * me;
836: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
837: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 838: me->isa = &HTTPStatusClass;
1.113 frystyk 839: if (request) {
1.126 frystyk 840: HTNet * net = HTRequest_net(request);
1.125 frystyk 841: /* Get existing copy */
842: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 843: me->request = request;
844: me->http = http;
845: http->next = HTTP_ERROR;
846: me->state = EOL_BEGIN;
847: return me;
848: } else
849: return HTErrorStream();
1.71 frystyk 850: }
851:
852: /* ------------------------------------------------------------------------- */
853:
854: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 855: ** ==============================
856: **
857: ** Given a hypertext address, this routine loads a document.
858: **
859: ** On entry,
860: ** request This is the request structure
1.94 frystyk 861: ** returns HT_ERROR Error has occured in call back
862: ** HT_OK Call back was OK
1.55 frystyk 863: */
1.141 frystyk 864: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type);
865:
866: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request)
1.55 frystyk 867: {
868: http_info *http; /* Specific protocol information */
1.112 frystyk 869: HTParentAnchor *anchor = HTRequest_anchor(request);
1.141 frystyk 870: HTNet * net = HTRequest_net(request);
1.112 frystyk 871:
1.94 frystyk 872: /*
873: ** Initiate a new http structure and bind to request structure
874: ** This is actually state HTTP_BEGIN, but it can't be in the state
875: ** machine as we need the structure first.
876: */
1.141 frystyk 877: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
878: HTAnchor_physical(anchor));
879: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
880: HT_OUTOFMEM("HTLoadHTTP");
881: http->net = net;
882: HTNet_setContext(net, http);
883: HTNet_setEventCallback(net, HTTPEvent);
884: HTNet_setEventParam(net, http); /* callbacks get http* */
885:
886: return HTTPEvent(soc, http, HTEvent_BEGIN); /* get it started - ops is ignored */
887: }
888:
889: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type)
890: {
891: http_info * http = (http_info *)pVoid;
892: int status = HT_ERROR;
893: HTNet * net = http->net;
894: HTRequest * request = HTNet_request(net);
1.144 frystyk 895: HTParentAnchor * anchor = HTRequest_anchor(request);
896: HTHost * host = HTNet_host(net);
1.141 frystyk 897:
898: /*
899: ** Check whether we have been interrupted
900: */
901: if (type == HTEvent_BEGIN) {
1.134 frystyk 902: http->next = HTTP_OK;
903: http->result = HT_ERROR;
1.141 frystyk 904: } else if (type == HTEvent_CLOSE) {
1.112 frystyk 905: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
906: NULL, 0, "HTLoadHTTP");
907: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 908: return HT_OK;
1.141 frystyk 909: } else if (type == HTEvent_END) {
910: HTTPCleanup(request, http->result);
911: return HT_OK;
912: } else if (type == HTEvent_RESET) {
913: HTTPCleanup(request, HT_RECOVER_PIPE);
1.145 frystyk 914: http->state = HTTP_BEGIN;
1.141 frystyk 915: return HT_OK;
916: }
917:
1.71 frystyk 918: /* Now jump into the machine. We know the state from the previous run */
919: while (1) {
920: switch (http->state) {
1.134 frystyk 921: case HTTP_BEGIN:
1.144 frystyk 922: status = HTHost_connect(host, net, HTAnchor_physical(anchor), HTTP_PORT);
923: host = HTNet_host(net);
1.153 frystyk 924: if (status == HT_OK) {
1.140 frystyk 925:
1.123 frystyk 926: /*
1.140 frystyk 927: ** Check the protocol class to see if we have connected to a
928: ** the right class of server, in this case HTTP. If we don't
929: ** know the server then assume a HTTP/1.0
1.123 frystyk 930: */
931: {
932: char * s_class = HTHost_class(host);
1.140 frystyk 933: if (!s_class) {
934: if (HTRequest_proxy(request) == NULL)
935: HTRequest_addConnection(request, "Keep-Alive", "");
936: HTHost_setClass(host, "http");
937: } else if (strcasecomp(s_class, "http")) {
1.123 frystyk 938: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
939: NULL, 0, "HTLoadHTTP");
940: http->state = HTTP_ERROR;
941: break;
942: }
1.95 frystyk 943: }
1.147 frystyk 944:
945: if (ConnectionMode & HTTP_NO_PIPELINING) {
946: if (PROT_TRACE) HTTrace("HTTP........ Mode is HTTP/1.1 WITH NO PIPELINING\n");
947: HTRequest_setFlush(request, YES);
948: } else if (ConnectionMode & HTTP_FORCE_10) {
949: if (PROT_TRACE) HTTrace("HTTP........ Mode is FORCE HTTP/1.0\n");
950: HTHost_setVersion(host, HTTP_10);
951: }
952:
1.151 frystyk 953: if (HTNet_preemptive(net)) {
954: if (PROT_TRACE) HTTrace("HTTP........ Force flush on preemptive load\n");
955: HTRequest_setFlush(request, YES);
956: }
957:
1.147 frystyk 958: /* Jump to next state */
1.144 frystyk 959: http->state = HTTP_NEED_STREAM;
960: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
961: return HT_OK;
962: else
963: http->state = HTTP_ERROR; /* Error or interrupt */
964: break;
965:
966: case HTTP_NEED_STREAM:
1.138 frystyk 967:
1.144 frystyk 968: /*
969: ** Create the stream pipe FROM the channel to the application.
970: ** The target for the input stream pipe is set up using the
971: ** stream stack.
972: */
1.153 frystyk 973: {
1.144 frystyk 974: HTStream *me=HTStreamStack(WWW_HTTP,
975: HTRequest_outputFormat(request),
976: HTRequest_outputStream(request),
977: request, YES);
978: HTNet_setReadStream(net, me);
979: HTRequest_setOutputConnected(request, YES);
980: }
1.127 frystyk 981:
1.144 frystyk 982: /*
983: ** Create the stream pipe TO the channel from the application
984: ** and hook it up to the request object
985: */
986: {
987: HTChannel * channel = HTHost_channel(host);
988: HTOutputStream * output = HTChannel_getChannelOStream(channel);
989: int version = HTHost_version(host);
990: HTStream * app = NULL;
991:
1.123 frystyk 992: /*
1.144 frystyk 993: ** Instead of calling this directly we could have a
994: ** stream stack builder on the output stream as well
1.123 frystyk 995: */
1.141 frystyk 996: #ifdef HT_MUX
1.144 frystyk 997: output = (HTOutputStream *)
998: HTBuffer_new(HTMuxWriter_new(host, net, output), request, 512);
1.141 frystyk 999: #endif
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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