Annotation of libwww/Library/src/HTTP.c, revision 1.140.2.8
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.
1.140.2.8! frystyk 6: ** @(#) $Id: HTTP.c,v 1.140.2.7 1996年11月08日 19:49:52 eric 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"
1.95 frystyk 27: #include "HTNetMan.h"
1.109 frystyk 28: #include "HTTPUtil.h"
1.80 frystyk 29: #include "HTTPReq.h"
1.55 frystyk 30: #include "HTTP.h" /* Implements */
1.140.2.1 eric 31: #include "HTWatch.h"
1.55 frystyk 32:
33: /* Macros and other defines */
1.94 frystyk 34: #ifndef HTTP_PORT
35: #define HTTP_PORT 80 /* Allocated to http by Jon Postel/ISI 24-Jan-92 */
36: #endif
37:
1.71 frystyk 38: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
39: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
40: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
41: #define FREE_TARGET (*me->target->isa->_free)(me->target)
1.74 frystyk 42: #define ABORT_TARGET (*me->target->isa->abort)(me->target, e)
1.2 timbl 43:
1.140 frystyk 44: #define HTTP_DUMP
45:
46: #ifdef HTTP_DUMP
1.139 frystyk 47: #define HTTP_OUTPUT "w3chttp.out"
1.140 frystyk 48: PRIVATE FILE * htfp = NULL;
49: #endif
1.139 frystyk 50:
1.59 frystyk 51: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 52:
53: /* Final states have negative value */
1.59 frystyk 54: typedef enum _HTTPState {
1.134 frystyk 55: HTTP_ERROR = -2,
56: HTTP_OK = -1,
1.71 frystyk 57: HTTP_BEGIN = 0,
58: HTTP_NEED_CONNECTION,
1.140.2.1 eric 59: HTTP_CONNECTED
1.59 frystyk 60: } HTTPState;
1.55 frystyk 61:
1.94 frystyk 62: /* This is the context structure for the this module */
1.55 frystyk 63: typedef struct _http_info {
1.81 frystyk 64: HTTPState state; /* Current State of the connection */
1.140.2.7 eric 65: HTTPState last;
1.81 frystyk 66: HTTPState next; /* Next state */
1.134 frystyk 67: int result; /* Result to report to the after filter */
1.139 frystyk 68: BOOL lock; /* Block for writing */
1.140.2.1 eric 69: HTNet * net;
1.55 frystyk 70: } http_info;
71:
1.88 frystyk 72: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 73:
1.71 frystyk 74: struct _HTStream {
1.119 frystyk 75: const HTStreamClass * isa;
1.71 frystyk 76: HTStream * target;
77: HTRequest * request;
78: http_info * http;
1.121 frystyk 79: HTEOLState state;
1.71 frystyk 80: BOOL transparent;
1.81 frystyk 81: char * version; /* Should we save this? */
1.71 frystyk 82: int status;
1.81 frystyk 83: char * reason;
1.71 frystyk 84: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 85: int buflen;
1.71 frystyk 86: };
1.21 luotonen 87:
1.123 frystyk 88: struct _HTInputStream {
89: const HTInputStreamClass * isa;
90: };
91:
1.71 frystyk 92: /* ------------------------------------------------------------------------- */
93: /* Help Functions */
94: /* ------------------------------------------------------------------------- */
1.21 luotonen 95:
1.94 frystyk 96: /* HTTPCleanup
97: ** -----------
1.55 frystyk 98: ** This function closes the connection and frees memory.
1.94 frystyk 99: ** Returns YES on OK, else NO
1.1 timbl 100: */
1.94 frystyk 101: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 102: {
1.126 frystyk 103: HTNet * net = HTRequest_net(req);
104: http_info * http = (http_info *) HTNet_context(net);
105: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 106:
1.94 frystyk 107: /* Free stream with data TO network */
1.112 frystyk 108: if (HTRequest_isDestination(req))
109: HTRequest_removeDestination(req);
1.126 frystyk 110: else if (input) {
1.94 frystyk 111: if (status == HT_INTERRUPTED)
1.126 frystyk 112: (*input->isa->abort)(input, NULL);
1.94 frystyk 113: else
1.126 frystyk 114: (*input->isa->_free)(input);
115: HTRequest_setInputStream(req, NULL);
1.94 frystyk 116: }
1.88 frystyk 117:
1.140 frystyk 118: #ifdef HTTP_DUMP
119: if (htfp) {
120: fclose(htfp);
121: htfp = NULL;
122: }
123: #endif
124:
1.94 frystyk 125: /* Remove the request object and our own context structure for http */
1.133 frystyk 126: HT_FREE(http);
127: HTNet_setContext(net, NULL);
1.131 frystyk 128: HTNet_delete(net, status);
1.94 frystyk 129: return YES;
1.55 frystyk 130: }
131:
1.71 frystyk 132: /*
1.130 frystyk 133: ** Informational 1xx codes are handled separately
1.136 frystyk 134: ** Returns YES if we should continue, NO if we should stop
1.55 frystyk 135: */
1.130 frystyk 136: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 137: {
1.136 frystyk 138: http_info * http = me->http;
1.71 frystyk 139: switch (me->status) {
140:
1.136 frystyk 141: case 100:
142: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
143: me->reason, (int) strlen(me->reason),
144: "HTTPInformation");
145: return YES;
146: break;
147:
1.130 frystyk 148: case 101:
1.136 frystyk 149: /*
150: ** We consider 101 Switching as a final state and exit this request
151: */
1.130 frystyk 152: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 153: me->reason, (int) strlen(me->reason),
1.130 frystyk 154: "HTTPInformation");
1.136 frystyk 155: http->next = HTTP_OK;
156: http->result = HT_UPGRADE;
1.127 frystyk 157: break;
158:
1.130 frystyk 159: default:
1.136 frystyk 160: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
161: (void *) me->buffer, me->buflen, "HTTPNextState");
162: http->next = HTTP_ERROR;
163: http->result = HT_ERROR;
1.127 frystyk 164: break;
1.130 frystyk 165: }
1.136 frystyk 166: return NO;
1.130 frystyk 167: }
168:
169: /*
170: ** This is a big switch handling all HTTP return codes. It puts in any
171: ** appropiate error message and decides whether we should expect data
172: ** or not.
173: */
174: PRIVATE void HTTPNextState (HTStream * me)
175: {
1.134 frystyk 176: http_info * http = me->http;
1.130 frystyk 177: switch (me->status) {
1.127 frystyk 178:
1.78 frystyk 179: case 0: /* 0.9 response */
1.127 frystyk 180: case 200: /* OK */
181: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
182: me->reason, (int) strlen(me->reason),
183: "HTTPNextState");
1.134 frystyk 184: http->next = HTTP_OK;
185: http->result = HT_LOADED;
1.112 frystyk 186: break;
187:
1.127 frystyk 188: case 201: /* Created */
1.112 frystyk 189: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
190: me->reason, (int) strlen(me->reason),
191: "HTTPNextState");
1.134 frystyk 192: http->next = HTTP_OK;
193: http->result = HT_CREATED;
1.112 frystyk 194: break;
195:
1.127 frystyk 196: case 202: /* Accepted */
1.112 frystyk 197: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
198: me->reason, (int) strlen(me->reason),
199: "HTTPNextState");
1.134 frystyk 200: http->next = HTTP_OK;
201: http->result = HT_ACCEPTED;
1.112 frystyk 202: break;
203:
1.127 frystyk 204: case 203: /* Non-authoritative information */
205: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 206: me->reason, (int) strlen(me->reason),
207: "HTTPNextState");
1.134 frystyk 208: http->next = HTTP_OK;
209: http->result = HT_LOADED;
1.71 frystyk 210: break;
1.78 frystyk 211:
212: case 204: /* No Response */
1.112 frystyk 213: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
214: me->reason, (int) strlen(me->reason),
215: "HTTPNextState");
1.134 frystyk 216: http->next = HTTP_OK;
217: http->result = HT_NO_DATA;
218: break;
219:
220: case 205: /* Reset Content */
221: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
222: me->reason, (int) strlen(me->reason),
223: "HTTPNextState");
224: http->next = HTTP_OK;
225: http->result = HT_RESET_CONTENT;
226: break;
227:
228: case 206: /* Partial Content */
229: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
230: me->reason, (int) strlen(me->reason),
231: "HTTPNextState");
232: http->next = HTTP_OK;
233: http->result = HT_PARTIAL_CONTENT;
234: break;
235:
236: case 300: /* Multiple Choices */
237: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
238: me->reason, (int) strlen(me->reason),
239: "HTTPNextState");
240: http->next = HTTP_OK;
241: http->result = HT_LOADED;
1.71 frystyk 242: break;
1.78 frystyk 243:
1.71 frystyk 244: case 301: /* Moved */
1.112 frystyk 245: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
246: me->reason, (int) strlen(me->reason),
247: "HTTPNextState");
1.134 frystyk 248: http->next = HTTP_ERROR;
249: http->result = HT_PERM_REDIRECT;
1.112 frystyk 250: break;
251:
1.71 frystyk 252: case 302: /* Found */
1.112 frystyk 253: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
254: me->reason, (int) strlen(me->reason),
255: "HTTPNextState");
1.134 frystyk 256: http->next = HTTP_ERROR;
257: http->result = HT_TEMP_REDIRECT;
1.71 frystyk 258: break;
1.55 frystyk 259:
1.71 frystyk 260: case 303: /* Method */
1.107 frystyk 261: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
262: me->reason, (int) strlen(me->reason),
263: "HTTPNextState");
1.134 frystyk 264: http->next = HTTP_ERROR;
265: http->result = HT_SEE_OTHER;
1.71 frystyk 266: break;
1.91 frystyk 267:
268: case 304: /* Not Modified */
1.131 frystyk 269: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 270: me->reason, (int) strlen(me->reason),
271: "HTTPNextState");
1.135 frystyk 272: http->next = HTTP_OK;
1.134 frystyk 273: http->result = HT_NOT_MODIFIED;
274: break;
275:
276: case 305: /* Use proxy */
277: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
278: me->reason, (int) strlen(me->reason),
279: "HTTPNextState");
280: http->next = HTTP_ERROR;
281: http->result = HT_USE_PROXY;
1.91 frystyk 282: break;
1.55 frystyk 283:
1.78 frystyk 284: case 400: /* Bad Request */
1.104 frystyk 285: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 286: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 287: http->next = HTTP_ERROR;
288: http->result = HT_ERROR;
1.71 frystyk 289: break;
1.70 howcome 290:
1.71 frystyk 291: case 401:
1.104 frystyk 292: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 293: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 294: http->next = HTTP_ERROR;
295: http->result = HT_NO_ACCESS;
1.71 frystyk 296: break;
297:
298: case 402: /* Payment required */
1.104 frystyk 299: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 300: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 301: http->next = HTTP_ERROR;
302: http->result = HT_ERROR;
1.71 frystyk 303: break;
1.55 frystyk 304:
1.71 frystyk 305: case 403: /* Forbidden */
1.104 frystyk 306: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 307: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 308: http->next = HTTP_ERROR;
309: http->result = HT_FORBIDDEN;
1.71 frystyk 310: break;
1.55 frystyk 311:
1.71 frystyk 312: case 404: /* Not Found */
1.104 frystyk 313: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 314: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 315: http->next = HTTP_ERROR;
316: http->result = HT_ERROR;
1.71 frystyk 317: break;
318:
1.78 frystyk 319: case 405: /* Not Allowed */
1.104 frystyk 320: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 321: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 322: http->next = HTTP_ERROR;
323: http->result = HT_ERROR;
1.78 frystyk 324: break;
325:
326: case 406: /* None Acceptable */
1.104 frystyk 327: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 328: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 329: http->next = HTTP_ERROR;
330: http->result = HT_NOT_ACCEPTABLE;
1.78 frystyk 331: break;
332:
333: case 407: /* Proxy Authentication Required */
1.127 frystyk 334: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 335: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 336: http->next = HTTP_ERROR;
337: http->result = HT_NO_PROXY_ACCESS;
1.78 frystyk 338: break;
339:
340: case 408: /* Request Timeout */
1.104 frystyk 341: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 342: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 343: http->next = HTTP_ERROR;
344: http->result = HT_ERROR;
345: break;
346:
347: case 409: /* Conflict */
348: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
349: me->reason, (int) strlen(me->reason), "HTTPNextState");
350: http->next = HTTP_ERROR;
351: http->result = HT_CONFLICT;
352: break;
353:
354: case 410: /* Gone */
355: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
356: me->reason, (int) strlen(me->reason), "HTTPNextState");
357: http->next = HTTP_ERROR;
358: http->result = HT_ERROR;
359: break;
360:
361: case 411: /* Length Required */
362: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
363: me->reason, (int) strlen(me->reason), "HTTPNextState");
364: http->next = HTTP_ERROR;
365: http->result = HT_LENGTH_REQUIRED;
366: break;
367:
368: case 412: /* Precondition failed */
369: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
370: me->reason, (int) strlen(me->reason), "HTTPNextState");
371: http->next = HTTP_ERROR;
372: http->result = HT_ERROR;
373: break;
374:
375: case 413: /* Request entity too large */
376: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
377: me->reason, (int) strlen(me->reason), "HTTPNextState");
378: http->next = HTTP_ERROR;
379: http->result = HT_ERROR;
380: break;
381:
382: case 414: /* Request-URI too long */
383: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
384: me->reason, (int) strlen(me->reason), "HTTPNextState");
385: http->next = HTTP_ERROR;
386: http->result = HT_ERROR;
387: break;
388:
389: case 415: /* Unsupported */
390: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
391: me->reason, (int) strlen(me->reason), "HTTPNextState");
392: http->next = HTTP_ERROR;
393: http->result = HT_ERROR;
1.78 frystyk 394: break;
395:
1.71 frystyk 396: case 500:
1.104 frystyk 397: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 398: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 399: http->next = HTTP_ERROR;
400: http->result = HT_ERROR;
1.78 frystyk 401: break;
402:
1.71 frystyk 403: case 501:
1.104 frystyk 404: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 405: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 406: http->next = HTTP_ERROR;
407: http->result = HT_ERROR;
1.78 frystyk 408: break;
409:
410: case 502:
1.104 frystyk 411: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 412: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 413: http->next = HTTP_ERROR;
414: http->result = HT_ERROR;
1.78 frystyk 415: break;
416:
417: case 503:
1.104 frystyk 418: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 419: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 420: http->next = HTTP_ERROR;
1.81 frystyk 421:
1.140 frystyk 422: /*
423: ** If Retry-After header is found then return HT_RETRY else HT_ERROR.
424: ** The caller may want to reissue the request at a later point in time.
425: */
426: {
427: HTResponse * response = HTRequest_response(me->request);
428: if (HTResponse_retryTime(response))
429: http->result = HT_RETRY;
430: else
431: http->result = HT_ERROR;
432: }
1.78 frystyk 433: break;
434:
435: case 504:
1.104 frystyk 436: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 437: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 438: http->next = HTTP_ERROR;
439: http->result = HT_ERROR;
440: break;
441:
442: case 505: /* Unsupported protocol version */
443: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
444: me->reason, (int) strlen(me->reason), "HTTPNextState");
445: http->next = HTTP_ERROR;
446: http->result = HT_BAD_VERSION;
1.71 frystyk 447: break;
1.78 frystyk 448:
1.71 frystyk 449: default: /* bad number */
1.104 frystyk 450: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 451: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 frystyk 452: http->next = HTTP_ERROR;
453: http->result = HT_ERROR;
1.71 frystyk 454: break;
1.55 frystyk 455: }
456: }
457:
1.71 frystyk 458: /* ------------------------------------------------------------------------- */
459: /* HTTP Status Line Stream */
460: /* ------------------------------------------------------------------------- */
1.55 frystyk 461:
1.71 frystyk 462: /*
1.140.2.1 eric 463: ** Analyze the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 464: ** then create a MIME-stream, else create a Guess stream to find out
465: ** what the 0.9 server is sending. We need to copy the buffer as we don't
466: ** know if we can modify the contents or not.
1.78 frystyk 467: **
468: ** Stream handling is a function of the status code returned from the
469: ** server:
470: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 471: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 472: **
473: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 474: */
1.100 frystyk 475: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 476: {
1.136 frystyk 477: HTRequest * request = me->request;
478: HTNet * net = HTRequest_net(request);
1.123 frystyk 479: HTHost * host = HTNet_host(net);
1.140.2.1 eric 480:
1.80 frystyk 481: if (me->target) {
482: int status = PUTBLOCK(me->buffer, me->buflen);
483: if (status == HT_OK)
484: me->transparent = YES;
485: return status;
1.136 frystyk 486: } else if (HTRequest_isSource(request)&&!HTRequest_outputStream(request)) {
1.88 frystyk 487: /*
488: ** We need to wait for the destinations to get ready
489: */
490: return HT_WOULD_BLOCK;
1.80 frystyk 491: }
1.88 frystyk 492:
1.132 frystyk 493: /*
494: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
495: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
1.140.2.3 eric 496:
1.132 frystyk 497: */
498: #if 0
1.81 frystyk 499: if (strncasecomp(me->buffer, "http/", 5)) {
1.132 frystyk 500: #else
501: if (strncasecomp(me->buffer, "http", 4)) {
502: #endif
1.80 frystyk 503: int status;
1.136 frystyk 504: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 505: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 506: me->target = HTStreamStack(WWW_UNKNOWN,
507: HTRequest_outputFormat(request),
508: HTRequest_outputStream(request),
509: request, NO);
1.134 frystyk 510: me->http->next = HTTP_OK;
1.80 frystyk 511: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
512: me->transparent = YES;
1.123 frystyk 513: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 514: return status;
515: } else {
1.140 frystyk 516: HTResponse * response = HTRequest_response(request);
1.133 frystyk 517: char *ptr = me->buffer+4; /* Skip the HTTP part */
1.81 frystyk 518: me->version = HTNextField(&ptr);
1.140.2.4 frystyk 519: HTHost_setConsumed(net->host, me->buflen);
1.95 frystyk 520:
1.130 frystyk 521: /* Here we want to find out when to use persistent connection */
1.133 frystyk 522: if (!strncasecomp(me->version, "/1.0", 4)) {
1.128 frystyk 523: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
524: HTHost_setVersion(host, HTTP_10);
1.133 frystyk 525: } else if (!strncasecomp(me->version, "/1.", 3)) { /* 1.x family */
1.128 frystyk 526: HTHost_setVersion(host, HTTP_11);
1.140.2.6 frystyk 527: #ifdef HT_MUX
528: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE);
529: #else
530: HTNet_setPersistent(net, YES, HT_TP_PIPELINE);
531: #endif
1.133 frystyk 532: } else {
533: if (PROT_TRACE)HTTrace("HTTP Status. No 1.x version number - treat it as a HTTP/1.0 server\n");
534: HTHost_setVersion(host, HTTP_10);
1.128 frystyk 535: }
1.95 frystyk 536:
1.81 frystyk 537: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 538: /* Kludge to fix the NCSA server version bug */
539: if (me->status == 0) me->status = atoi(me->version);
540:
1.81 frystyk 541: me->reason = ptr;
542: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
543: *ptr = '0円';
544: else if ((ptr = strchr(me->reason, '\n')) != NULL)
545: *ptr = '0円';
546:
1.130 frystyk 547: /*
548: ** If it is a 1xx code then find out what to do and return until we
549: ** get the next code. In the case of Upgrade we may not get back here
550: ** at all. If we are uploading an entity then continue doing that
551: */
552: if (me->status/100 == 1) {
1.136 frystyk 553: if (HTTPInformation(me) == YES) {
554: me->buflen = 0;
555: me->state = EOL_BEGIN;
556: return HTMethod_hasEntity(HTRequest_method(request)) ?
557: HT_CONTINUE : HT_OK;
1.103 frystyk 558: }
1.56 frystyk 559: }
1.133 frystyk 560:
561: /*
562: ** As we are getting fresh metainformation in the HTTP response,
563: ** we clear the old metainfomation in order not to mix it with the new
564: ** one. This is particularly important for the content-length and the
1.139 frystyk 565: ** like. The TRACE and OPTIONS method just adds to the current
566: ** metainformation so in that case we don't clear the anchor.
1.133 frystyk 567: */
1.136 frystyk 568: if (me->status==200 || me->status==203 || me->status==300) {
1.140 frystyk 569: /*
570: ** 200, 203 and 300 are all fully cacheable responses. No byte
571: ** ranges or anything else make life hard in this case.
572: */
573: HTResponse_setCachable(response, YES);
1.136 frystyk 574: me->target = HTStreamStack(WWW_MIME,
575: HTRequest_outputFormat(request),
576: HTRequest_outputStream(request),
577: request, NO);
1.140 frystyk 578: } else if (me->status==206) {
579: /*
580: ** We got a partial response and now we must check whether
581: ** we issued a cache If-Range request or it was a new
582: ** partial response which we don't have in cache. In the latter
583: ** case, we don't cache the object and in the former we append
584: ** the result to the already existing cache entry.
585: */
586: HTReload reload = HTRequest_reloadMode(request);
587: if (reload == HT_CACHE_RANGE_VALIDATE) {
588: HTResponse_setCachable(response, YES);
589: me->target = HTStreamStack(WWW_MIME_PART,
590: HTRequest_outputFormat(request),
591: HTRequest_outputStream(request),
592: request, NO);
593: } else {
594: me->target = HTStreamStack(WWW_MIME,
595: HTRequest_outputFormat(request),
596: HTRequest_outputStream(request),
597: request, NO);
598: }
1.139 frystyk 599: } else if (me->status==204 || me->status==304) {
1.140 frystyk 600: HTResponse_setCachable(response, YES);
1.136 frystyk 601: me->target = HTStreamStack(WWW_MIME_HEAD,
602: HTRequest_debugFormat(request),
603: HTRequest_debugStream(request),
604: request, NO);
605: } else if (HTRequest_debugStream(request)) {
606: me->target = HTStreamStack(WWW_MIME,
607: HTRequest_debugFormat(request),
608: HTRequest_debugStream(request),
609: request, NO);
610: } else {
1.140 frystyk 611: /*
612: ** We still need to parse the MIME part in order to find any
613: ** valuable meta information which is needed from the response.
614: */
1.136 frystyk 615: me->target = HTStreamStack(WWW_MIME,
616: HTRequest_debugFormat(request),
617: HTRequest_debugStream(request),
618: request, NO);
1.133 frystyk 619: }
1.56 frystyk 620: }
1.113 frystyk 621: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 622: HTTPNextState(me); /* Get next state */
1.80 frystyk 623: me->transparent = YES;
624: return HT_OK;
1.71 frystyk 625: }
1.56 frystyk 626:
1.80 frystyk 627: /*
628: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
629: ** is found
630: */
1.119 frystyk 631: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 632: {
1.80 frystyk 633: while (!me->transparent && l-- > 0) {
634: int status;
635: if (me->target) {
636: if ((status = stream_pipe(me)) != HT_OK)
637: return status;
638: } else {
639: *(me->buffer+me->buflen++) = *b;
640: if (me->state == EOL_FCR) {
641: if (*b == LF) { /* Line found */
642: if ((status = stream_pipe(me)) != HT_OK)
643: return status;
644: } else {
645: me->state = EOL_BEGIN;
646: }
647: } else if (*b == CR) {
648: me->state = EOL_FCR;
649: } else if (*b == LF) {
650: if ((status = stream_pipe(me)) != HT_OK)
651: return status;
1.71 frystyk 652: } else {
1.80 frystyk 653: if (me->buflen >= MAX_STATUS_LEN) {
654: if ((status = stream_pipe(me)) != HT_OK)
655: return status;
656: }
1.71 frystyk 657: }
1.80 frystyk 658: b++;
1.71 frystyk 659: }
1.56 frystyk 660: }
1.99 frystyk 661: if (l > 0) return PUTBLOCK(b, l);
662: return HT_OK;
1.56 frystyk 663: }
664:
1.119 frystyk 665: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 666: {
1.80 frystyk 667: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 668: }
1.56 frystyk 669:
1.100 frystyk 670: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 671: {
1.80 frystyk 672: return HTTPStatus_put_block(me, &c, 1);
673: }
674:
1.100 frystyk 675: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 676: {
677: return (*me->target->isa->flush)(me->target);
1.71 frystyk 678: }
679:
1.100 frystyk 680: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 681: {
1.87 frystyk 682: int status = HT_OK;
683: if (me->target) {
684: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
685: return HT_WOULD_BLOCK;
686: }
1.115 frystyk 687: HT_FREE(me);
1.100 frystyk 688: return status;
1.71 frystyk 689: }
690:
1.104 frystyk 691: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 692: {
693: if (me->target)
1.74 frystyk 694: ABORT_TARGET;
1.115 frystyk 695: HT_FREE(me);
1.74 frystyk 696: if (PROT_TRACE)
1.116 eric 697: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 698: return HT_ERROR;
1.71 frystyk 699: }
700:
701: /* HTTPStatus Stream
702: ** -----------------
703: */
1.119 frystyk 704: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 705: {
706: "HTTPStatus",
1.80 frystyk 707: HTTPStatus_flush,
1.71 frystyk 708: HTTPStatus_free,
709: HTTPStatus_abort,
710: HTTPStatus_put_character,
711: HTTPStatus_put_string,
712: HTTPStatus_put_block
713: };
714:
1.113 frystyk 715: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
716: void * param,
717: HTFormat input_format,
718: HTFormat output_format,
719: HTStream * output_stream)
1.71 frystyk 720: {
1.115 frystyk 721: HTStream * me;
722: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
723: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 724: me->isa = &HTTPStatusClass;
1.113 frystyk 725: if (request) {
1.126 frystyk 726: HTNet * net = HTRequest_net(request);
1.125 frystyk 727: /* Get existing copy */
728: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 729: me->request = request;
730: me->http = http;
731: http->next = HTTP_ERROR;
732: me->state = EOL_BEGIN;
733: return me;
734: } else
735: return HTErrorStream();
1.71 frystyk 736: }
737:
738: /* ------------------------------------------------------------------------- */
739:
740: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 741: ** ==============================
742: **
743: ** Given a hypertext address, this routine loads a document.
744: **
745: ** On entry,
746: ** request This is the request structure
1.94 frystyk 747: ** returns HT_ERROR Error has occured in call back
748: ** HT_OK Call back was OK
1.55 frystyk 749: */
1.140.2.3 eric 750: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type);
1.140.2.1 eric 751:
752: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request)
1.55 frystyk 753: {
754: http_info *http; /* Specific protocol information */
1.112 frystyk 755: HTParentAnchor *anchor = HTRequest_anchor(request);
1.140.2.1 eric 756: HTNet * net = HTRequest_net(request);
1.112 frystyk 757:
1.94 frystyk 758: /*
759: ** Initiate a new http structure and bind to request structure
760: ** This is actually state HTTP_BEGIN, but it can't be in the state
761: ** machine as we need the structure first.
762: */
1.140.2.1 eric 763: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
764: HTAnchor_physical(anchor));
765: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
766: HT_OUTOFMEM("HTLoadHTTP");
1.140.2.7 eric 767: http->last = http->state = HTTP_BEGIN;
1.140.2.1 eric 768: http->next = HTTP_OK;
769: http->result = HT_ERROR;
770: http->net = net;
771: HTNet_setContext(net, http);
772: HTNet_setEventCallback(net, HTTPEvent);
773: HTNet_setEventParam(net, http); /* callbacks get http* */
774:
1.140.2.5 frystyk 775: return HTTPEvent(soc, http, HTEvent_BEGIN); /* get it started - ops is ignored */
1.140.2.1 eric 776: }
777:
1.140.2.3 eric 778: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type)
1.140.2.1 eric 779: {
780: http_info * http = (http_info *)pVoid;
781: int status = HT_ERROR;
782: HTNet * net = http->net;
783: HTRequest * request = HTNet_request(net);
784: HTParentAnchor *anchor = HTRequest_anchor(request);
785:
1.140.2.3 eric 786: /*
787: ** Check whether we have been interrupted
788: */
789: if (type == HTEvent_CLOSE) {
790: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
791: NULL, 0, "HTLoadHTTP");
792: HTTPCleanup(request, HT_INTERRUPTED);
1.140.2.5 frystyk 793: return HT_OK;
794: } else if (type == HTEvent_END) {
795: HTTPCleanup(request, http->result);
1.140.2.3 eric 796: return HT_OK;
797: }
798:
1.71 frystyk 799: /* Now jump into the machine. We know the state from the previous run */
800: while (1) {
801: switch (http->state) {
1.134 frystyk 802: case HTTP_BEGIN:
1.140.2.7 eric 803: http->last = http->state;
1.129 frystyk 804: http->state = HTTP_NEED_CONNECTION;
1.71 frystyk 805: break;
806:
1.123 frystyk 807: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
1.140.2.7 eric 808: http->last = http->state;
1.140.2.1 eric 809: status = HTHost_connect(net->host, net, HTAnchor_physical(anchor), HTTP_PORT);
1.80 frystyk 810: if (status == HT_OK) {
1.140 frystyk 811: HTHost * host = HTNet_host(net);
812:
1.123 frystyk 813: /*
1.140 frystyk 814: ** Check the protocol class to see if we have connected to a
815: ** the right class of server, in this case HTTP. If we don't
816: ** know the server then assume a HTTP/1.0
1.123 frystyk 817: */
818: {
819: char * s_class = HTHost_class(host);
1.140 frystyk 820: if (!s_class) {
821: if (HTRequest_proxy(request) == NULL)
822: HTRequest_addConnection(request, "Keep-Alive", "");
823: HTHost_setClass(host, "http");
824: } else if (strcasecomp(s_class, "http")) {
1.123 frystyk 825: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
826: NULL, 0, "HTLoadHTTP");
827: http->state = HTTP_ERROR;
828: break;
829: }
1.95 frystyk 830: }
1.138 frystyk 831:
1.123 frystyk 832: /*
833: ** Create the stream pipe FROM the channel to the application.
834: ** The target for the input stream pipe is set up using the
835: ** stream stack.
1.113 frystyk 836: */
1.140.2.2 frystyk 837: {
838: HTStream *me=HTStreamStack(WWW_HTTP,
839: HTRequest_outputFormat(request),
840: HTRequest_outputStream(request),
841: request, YES);
842: HTNet_setReadStream(net, me);
843: HTRequest_setOutputConnected(request, YES);
844: }
1.127 frystyk 845:
1.123 frystyk 846: /*
847: ** Create the stream pipe TO the channel from the application
848: ** and hook it up to the request object
849: */
850: {
1.140.2.2 frystyk 851: HTChannel * channel = HTHost_channel(net->host);
852: HTOutputStream * output = HTChannel_output(channel);
1.140 frystyk 853: int version = HTHost_version(host);
1.139 frystyk 854: HTStream * app = NULL;
1.140.2.2 frystyk 855:
856: /*
857: ** Instead of calling this directly we could have a
858: ** stream stack builder on the output stream as well
859: */
860: #ifdef HT_MUX
1.140.2.3 eric 861: output = (HTOutputStream *)
862: HTBuffer_new(HTMuxWriter_new(host, net, output),
863: request, 512);
1.140.2.2 frystyk 864: #endif
865:
1.139 frystyk 866: #ifdef HTTP_DUMP
867: if (PROT_TRACE) {
1.140 frystyk 868: if ((htfp = fopen(HTTP_OUTPUT, "wb"))) {
869: output = (HTOutputStream *)
870: HTTee((HTStream *) output,
871: HTFWriter_new(request, htfp, YES), NULL);
1.139 frystyk 872: HTTrace("HTTP........ Dumping request to `%s\'\n",
873: HTTP_OUTPUT);
874: }
875: }
876: #endif /* HTTP_DUMP */
877: app = HTMethod_hasEntity(HTRequest_method(request)) ?
878: HTMIMERequest_new(request,
1.140 frystyk 879: HTTPRequest_new(request, (HTStream *) output, NO,
880: version),
881: YES) :
882: HTTPRequest_new(request, (HTStream *) output, YES,
883: version);
1.123 frystyk 884: HTRequest_setInputStream(request, app);
885: }
1.88 frystyk 886:
887: /*
888: ** Set up concurrent read/write if this request isn't the
889: ** source for a PUT or POST. As source we don't start reading
890: ** before all destinations are ready. If destination then
891: ** register the input stream and get ready for read
892: */
1.112 frystyk 893: if (HTRequest_isDestination(request)) {
1.140.2.1 eric 894: HTHost_register(net->host, net, HTEvent_READ);
1.88 frystyk 895: HTRequest_linkDestination(request);
896: }
1.140.2.1 eric 897: http->state = HTTP_CONNECTED;
898: type = HTEvent_WRITE; /* fresh, so try a write */
1.133 frystyk 899: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.94 frystyk 900: return HT_OK;
1.71 frystyk 901: else
902: http->state = HTTP_ERROR; /* Error or interrupt */
903: break;
904:
1.87 frystyk 905: /* As we can do simultanous read and write this is now one state */
1.140.2.1 eric 906: case HTTP_CONNECTED:
1.140.2.7 eric 907: http->last = http->state;
1.140.2.1 eric 908: if (type == HTEvent_WRITE) {
1.88 frystyk 909: if (HTRequest_isDestination(request)) {
1.126 frystyk 910: HTRequest * source = HTRequest_source(request);
911: HTNet * srcnet = HTRequest_net(source);
1.112 frystyk 912: if (srcnet) {
1.140.2.1 eric 913: HTHost_register(srcnet->host, srcnet, HTEvent_READ);
914: HTHost_unregister(srcnet->host, srcnet, HTEvent_WRITE);
1.112 frystyk 915: }
1.94 frystyk 916: return HT_OK;
1.80 frystyk 917: }
1.126 frystyk 918:
919: /*
920: ** Should we use the input stream directly or call the post
921: ** callback function to send data down to the network?
922: */
923: {
924: HTStream * input = HTRequest_inputStream(request);
925: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 926: if (pcbf) {
1.139 frystyk 927: if (http->lock)
928: return HT_OK;
929: else {
1.140.2.1 eric 930: status = (*pcbf)(request, input);
1.140 frystyk 931: if (status == HT_PAUSE || status == HT_LOADED) {
1.140.2.1 eric 932: type = HTEvent_READ;
1.139 frystyk 933: http->lock = YES;
1.140 frystyk 934: } else if (status == HT_ERROR) {
1.139 frystyk 935: http->result = HT_INTERRUPTED;
936: http->state = HTTP_ERROR;
937: break;
938: }
939: }
1.131 frystyk 940: } else {
1.140.2.7 eric 941: HTTransportMode mode = HTHost_mode(net->host, NO);
1.140.2.8! frystyk 942: HTTrace("TESTTESTTEST mode = %d\n", mode);
1.140.2.7 eric 943: if (mode == HT_TP_SINGLE ||
944: (mode == HT_TP_PIPELINE && !HTHost_launchPending(net->host)))
1.140.2.1 eric 945: status = (*input->isa->flush)(input);
946: type = HTEvent_READ;
1.131 frystyk 947: }
948: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 949: }
1.140.2.1 eric 950: } else if (type == HTEvent_READ) {
1.140.2.7 eric 951: status = HTHost_read(net->host, net);
1.131 frystyk 952: if (status == HT_WOULD_BLOCK)
1.94 frystyk 953: return HT_OK;
1.131 frystyk 954: else if (status == HT_CONTINUE) {
1.130 frystyk 955: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
1.139 frystyk 956: http->lock = NO;
1.140.2.1 eric 957: type = HTEvent_WRITE;
1.130 frystyk 958: continue;
1.133 frystyk 959: } else if (status==HT_LOADED)
1.140.2.1 eric 960: http->state = http->next; /* Jump to next state (OK or ERROR) */
1.133 frystyk 961: else if (status==HT_CLOSED) {
962: HTHost * host = HTNet_host(net);
963:
964: /*
965: ** If this is a persistent connection and we get a close
966: ** then it is an error and we should recover from it by
967: ** restarting the pipe line of requests if any
968: */
969: if (HTHost_isPersistent(host)) {
1.135 frystyk 970: http->result = HT_RECOVER_PIPE;
1.133 frystyk 971: http->state = HTTP_ERROR;
972: break;
973: } else
1.134 frystyk 974: http->state = HTTP_OK;
1.133 frystyk 975: } else
1.94 frystyk 976: http->state = HTTP_ERROR;
1.90 frystyk 977: } else {
1.140.2.1 eric 978: http->state = HTTP_ERROR; /* don't know how to handle OOB */
1.90 frystyk 979: }
1.71 frystyk 980: break;
1.80 frystyk 981:
1.134 frystyk 982: case HTTP_OK:
1.140.2.7 eric 983: http->last = http->state;
1.88 frystyk 984: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 985: if (HTRequest_isDestination(request)) {
1.126 frystyk 986: HTRequest * source = HTRequest_source(request);
1.91 frystyk 987: HTLink *link =
1.127 frystyk 988: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 989: (HTAnchor *) anchor);
1.109 frystyk 990: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 991: }
1.112 frystyk 992: }
1.134 frystyk 993: HTTPCleanup(request, http->result);
1.94 frystyk 994: return HT_OK;
1.71 frystyk 995: break;
1.80 frystyk 996:
1.71 frystyk 997: case HTTP_ERROR:
1.140.2.7 eric 998: http->last = http->state;
1.88 frystyk 999: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 1000: if (HTRequest_isDestination(request)) {
1.126 frystyk 1001: HTRequest * source = HTRequest_source(request);
1.91 frystyk 1002: HTLink *link =
1.127 frystyk 1003: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 1004: (HTAnchor *) anchor);
1.109 frystyk 1005: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 1006: }
1.112 frystyk 1007: HTRequest_killPostWeb(request);
1008: }
1.134 frystyk 1009: HTTPCleanup(request, http->result);
1.94 frystyk 1010: return HT_OK;
1.71 frystyk 1011: break;
1.140.2.7 eric 1012: default:
1013: HTTrace("bad http state %d from %d.\n", http->state, http->last);
1014: HTDebugBreak();
1.71 frystyk 1015: }
1016: } /* End of while(1) */
1017: }
1.88 frystyk 1018:
1.21 luotonen 1019:
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