Annotation of libwww/Library/src/HTTP.c, revision 1.140
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 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.139 1996年09月13日 02:05:32 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"
1.95 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 */
31:
32: /* Macros and other defines */
1.94 frystyk 33: #ifndef HTTP_PORT
34: #define HTTP_PORT 80 /* Allocated to http by Jon Postel/ISI 24-Jan-92 */
35: #endif
36:
1.71 frystyk 37: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
38: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
39: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
40: #define FREE_TARGET (*me->target->isa->_free)(me->target)
1.74 frystyk 41: #define ABORT_TARGET (*me->target->isa->abort)(me->target, e)
1.2 timbl 42:
1.140 ! frystyk 43: #define HTTP_DUMP
! 44:
! 45: #ifdef HTTP_DUMP
1.139 frystyk 46: #define HTTP_OUTPUT "w3chttp.out"
1.140 ! frystyk 47: PRIVATE FILE * htfp = NULL;
! 48: #endif
1.139 frystyk 49:
1.59 frystyk 50: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 51:
52: /* Final states have negative value */
1.59 frystyk 53: typedef enum _HTTPState {
1.134 frystyk 54: HTTP_ERROR = -2,
55: HTTP_OK = -1,
1.71 frystyk 56: HTTP_BEGIN = 0,
57: HTTP_NEED_CONNECTION,
1.134 frystyk 58: HTTP_NEED_REQUEST
1.59 frystyk 59: } HTTPState;
1.55 frystyk 60:
1.94 frystyk 61: /* This is the context structure for the this module */
1.55 frystyk 62: typedef struct _http_info {
1.81 frystyk 63: HTTPState state; /* Current State of the connection */
64: HTTPState next; /* Next state */
1.134 frystyk 65: int result; /* Result to report to the after filter */
1.139 frystyk 66: BOOL lock; /* Block for writing */
1.55 frystyk 67: } http_info;
68:
1.88 frystyk 69: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 70:
1.71 frystyk 71: struct _HTStream {
1.119 frystyk 72: const HTStreamClass * isa;
1.71 frystyk 73: HTStream * target;
74: HTRequest * request;
75: http_info * http;
1.121 frystyk 76: HTEOLState state;
1.71 frystyk 77: BOOL transparent;
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;
1.71 frystyk 83: };
1.21 luotonen 84:
1.123 frystyk 85: struct _HTInputStream {
86: const HTInputStreamClass * isa;
87: };
88:
1.71 frystyk 89: /* ------------------------------------------------------------------------- */
90: /* Help Functions */
91: /* ------------------------------------------------------------------------- */
1.21 luotonen 92:
1.94 frystyk 93: /* HTTPCleanup
94: ** -----------
1.55 frystyk 95: ** This function closes the connection and frees memory.
1.94 frystyk 96: ** Returns YES on OK, else NO
1.1 timbl 97: */
1.94 frystyk 98: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 99: {
1.126 frystyk 100: HTNet * net = HTRequest_net(req);
101: http_info * http = (http_info *) HTNet_context(net);
102: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 103:
1.94 frystyk 104: /* Free stream with data TO network */
1.112 frystyk 105: if (HTRequest_isDestination(req))
106: HTRequest_removeDestination(req);
1.126 frystyk 107: else if (input) {
1.94 frystyk 108: if (status == HT_INTERRUPTED)
1.126 frystyk 109: (*input->isa->abort)(input, NULL);
1.94 frystyk 110: else
1.126 frystyk 111: (*input->isa->_free)(input);
112: HTRequest_setInputStream(req, NULL);
1.94 frystyk 113: }
1.88 frystyk 114:
1.140 ! frystyk 115: #ifdef HTTP_DUMP
! 116: if (htfp) {
! 117: fclose(htfp);
! 118: htfp = NULL;
! 119: }
! 120: #endif
! 121:
1.94 frystyk 122: /* Remove the request object and our own context structure for http */
1.133 frystyk 123: HT_FREE(http);
124: HTNet_setContext(net, NULL);
1.131 frystyk 125: HTNet_delete(net, status);
1.94 frystyk 126: return YES;
1.55 frystyk 127: }
128:
1.71 frystyk 129: /*
1.130 frystyk 130: ** Informational 1xx codes are handled separately
1.136 frystyk 131: ** Returns YES if we should continue, NO if we should stop
1.55 frystyk 132: */
1.130 frystyk 133: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 134: {
1.136 frystyk 135: http_info * http = me->http;
1.71 frystyk 136: switch (me->status) {
137:
1.136 frystyk 138: case 100:
139: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
140: me->reason, (int) strlen(me->reason),
141: "HTTPInformation");
142: return YES;
143: break;
144:
1.130 frystyk 145: case 101:
1.136 frystyk 146: /*
147: ** We consider 101 Switching as a final state and exit this request
148: */
1.130 frystyk 149: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 150: me->reason, (int) strlen(me->reason),
1.130 frystyk 151: "HTTPInformation");
1.136 frystyk 152: http->next = HTTP_OK;
153: http->result = HT_UPGRADE;
1.127 frystyk 154: break;
155:
1.130 frystyk 156: default:
1.136 frystyk 157: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
158: (void *) me->buffer, me->buflen, "HTTPNextState");
159: http->next = HTTP_ERROR;
160: http->result = HT_ERROR;
1.127 frystyk 161: break;
1.130 frystyk 162: }
1.136 frystyk 163: return NO;
1.130 frystyk 164: }
165:
166: /*
167: ** This is a big switch handling all HTTP return codes. It puts in any
168: ** appropiate error message and decides whether we should expect data
169: ** or not.
170: */
171: PRIVATE void HTTPNextState (HTStream * me)
172: {
1.134 frystyk 173: http_info * http = me->http;
1.130 frystyk 174: switch (me->status) {
1.127 frystyk 175:
1.78 frystyk 176: case 0: /* 0.9 response */
1.127 frystyk 177: case 200: /* OK */
178: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
179: me->reason, (int) strlen(me->reason),
180: "HTTPNextState");
1.134 frystyk 181: http->next = HTTP_OK;
182: http->result = HT_LOADED;
1.112 frystyk 183: break;
184:
1.127 frystyk 185: case 201: /* Created */
1.112 frystyk 186: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
187: me->reason, (int) strlen(me->reason),
188: "HTTPNextState");
1.134 frystyk 189: http->next = HTTP_OK;
190: http->result = HT_CREATED;
1.112 frystyk 191: break;
192:
1.127 frystyk 193: case 202: /* Accepted */
1.112 frystyk 194: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
195: me->reason, (int) strlen(me->reason),
196: "HTTPNextState");
1.134 frystyk 197: http->next = HTTP_OK;
198: http->result = HT_ACCEPTED;
1.112 frystyk 199: break;
200:
1.127 frystyk 201: case 203: /* Non-authoritative information */
202: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 203: me->reason, (int) strlen(me->reason),
204: "HTTPNextState");
1.134 frystyk 205: http->next = HTTP_OK;
206: http->result = HT_LOADED;
1.71 frystyk 207: break;
1.78 frystyk 208:
209: case 204: /* No Response */
1.112 frystyk 210: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
211: me->reason, (int) strlen(me->reason),
212: "HTTPNextState");
1.134 frystyk 213: http->next = HTTP_OK;
214: http->result = HT_NO_DATA;
215: break;
216:
217: case 205: /* Reset Content */
218: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
219: me->reason, (int) strlen(me->reason),
220: "HTTPNextState");
221: http->next = HTTP_OK;
222: http->result = HT_RESET_CONTENT;
223: break;
224:
225: case 206: /* Partial Content */
226: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
227: me->reason, (int) strlen(me->reason),
228: "HTTPNextState");
229: http->next = HTTP_OK;
230: http->result = HT_PARTIAL_CONTENT;
231: break;
232:
233: case 300: /* Multiple Choices */
234: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
235: me->reason, (int) strlen(me->reason),
236: "HTTPNextState");
237: http->next = HTTP_OK;
238: http->result = HT_LOADED;
1.71 frystyk 239: break;
1.78 frystyk 240:
1.71 frystyk 241: case 301: /* Moved */
1.112 frystyk 242: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
243: me->reason, (int) strlen(me->reason),
244: "HTTPNextState");
1.134 frystyk 245: http->next = HTTP_ERROR;
246: http->result = HT_PERM_REDIRECT;
1.112 frystyk 247: break;
248:
1.71 frystyk 249: case 302: /* Found */
1.112 frystyk 250: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
251: me->reason, (int) strlen(me->reason),
252: "HTTPNextState");
1.134 frystyk 253: http->next = HTTP_ERROR;
254: http->result = HT_TEMP_REDIRECT;
1.71 frystyk 255: break;
1.55 frystyk 256:
1.71 frystyk 257: case 303: /* Method */
1.107 frystyk 258: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
259: me->reason, (int) strlen(me->reason),
260: "HTTPNextState");
1.134 frystyk 261: http->next = HTTP_ERROR;
262: http->result = HT_SEE_OTHER;
1.71 frystyk 263: break;
1.91 frystyk 264:
265: case 304: /* Not Modified */
1.131 frystyk 266: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 267: me->reason, (int) strlen(me->reason),
268: "HTTPNextState");
1.135 frystyk 269: http->next = HTTP_OK;
1.134 frystyk 270: http->result = HT_NOT_MODIFIED;
271: break;
272:
273: case 305: /* Use proxy */
274: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
275: me->reason, (int) strlen(me->reason),
276: "HTTPNextState");
277: http->next = HTTP_ERROR;
278: http->result = HT_USE_PROXY;
1.91 frystyk 279: break;
1.55 frystyk 280:
1.78 frystyk 281: case 400: /* Bad Request */
1.104 frystyk 282: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 283: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 284: http->next = HTTP_ERROR;
285: http->result = HT_ERROR;
1.71 frystyk 286: break;
1.70 howcome 287:
1.71 frystyk 288: case 401:
1.104 frystyk 289: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 290: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 291: http->next = HTTP_ERROR;
292: http->result = HT_NO_ACCESS;
1.71 frystyk 293: break;
294:
295: case 402: /* Payment required */
1.104 frystyk 296: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 297: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 298: http->next = HTTP_ERROR;
299: http->result = HT_ERROR;
1.71 frystyk 300: break;
1.55 frystyk 301:
1.71 frystyk 302: case 403: /* Forbidden */
1.104 frystyk 303: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 304: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 305: http->next = HTTP_ERROR;
306: http->result = HT_FORBIDDEN;
1.71 frystyk 307: break;
1.55 frystyk 308:
1.71 frystyk 309: case 404: /* Not Found */
1.104 frystyk 310: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 311: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 312: http->next = HTTP_ERROR;
313: http->result = HT_ERROR;
1.71 frystyk 314: break;
315:
1.78 frystyk 316: case 405: /* Not Allowed */
1.104 frystyk 317: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 318: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 319: http->next = HTTP_ERROR;
320: http->result = HT_ERROR;
1.78 frystyk 321: break;
322:
323: case 406: /* None Acceptable */
1.104 frystyk 324: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 325: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 326: http->next = HTTP_ERROR;
327: http->result = HT_NOT_ACCEPTABLE;
1.78 frystyk 328: break;
329:
330: case 407: /* Proxy Authentication Required */
1.127 frystyk 331: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 332: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 333: http->next = HTTP_ERROR;
334: http->result = HT_NO_PROXY_ACCESS;
1.78 frystyk 335: break;
336:
337: case 408: /* Request Timeout */
1.104 frystyk 338: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 339: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 340: http->next = HTTP_ERROR;
341: http->result = HT_ERROR;
342: break;
343:
344: case 409: /* Conflict */
345: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
346: me->reason, (int) strlen(me->reason), "HTTPNextState");
347: http->next = HTTP_ERROR;
348: http->result = HT_CONFLICT;
349: break;
350:
351: case 410: /* Gone */
352: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
353: me->reason, (int) strlen(me->reason), "HTTPNextState");
354: http->next = HTTP_ERROR;
355: http->result = HT_ERROR;
356: break;
357:
358: case 411: /* Length Required */
359: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
360: me->reason, (int) strlen(me->reason), "HTTPNextState");
361: http->next = HTTP_ERROR;
362: http->result = HT_LENGTH_REQUIRED;
363: break;
364:
365: case 412: /* Precondition failed */
366: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
367: me->reason, (int) strlen(me->reason), "HTTPNextState");
368: http->next = HTTP_ERROR;
369: http->result = HT_ERROR;
370: break;
371:
372: case 413: /* Request entity too large */
373: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
374: me->reason, (int) strlen(me->reason), "HTTPNextState");
375: http->next = HTTP_ERROR;
376: http->result = HT_ERROR;
377: break;
378:
379: case 414: /* Request-URI too long */
380: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
381: me->reason, (int) strlen(me->reason), "HTTPNextState");
382: http->next = HTTP_ERROR;
383: http->result = HT_ERROR;
384: break;
385:
386: case 415: /* Unsupported */
387: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
388: me->reason, (int) strlen(me->reason), "HTTPNextState");
389: http->next = HTTP_ERROR;
390: http->result = HT_ERROR;
1.78 frystyk 391: break;
392:
1.71 frystyk 393: case 500:
1.104 frystyk 394: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 395: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 396: http->next = HTTP_ERROR;
397: http->result = HT_ERROR;
1.78 frystyk 398: break;
399:
1.71 frystyk 400: case 501:
1.104 frystyk 401: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 402: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 403: http->next = HTTP_ERROR;
404: http->result = HT_ERROR;
1.78 frystyk 405: break;
406:
407: case 502:
1.104 frystyk 408: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 409: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 410: http->next = HTTP_ERROR;
411: http->result = HT_ERROR;
1.78 frystyk 412: break;
413:
414: case 503:
1.104 frystyk 415: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 416: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 417: http->next = HTTP_ERROR;
1.81 frystyk 418:
1.140 ! frystyk 419: /*
! 420: ** If Retry-After header is found then return HT_RETRY else HT_ERROR.
! 421: ** The caller may want to reissue the request at a later point in time.
! 422: */
! 423: {
! 424: HTResponse * response = HTRequest_response(me->request);
! 425: if (HTResponse_retryTime(response))
! 426: http->result = HT_RETRY;
! 427: else
! 428: http->result = HT_ERROR;
! 429: }
1.78 frystyk 430: break;
431:
432: case 504:
1.104 frystyk 433: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 434: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 435: http->next = HTTP_ERROR;
436: http->result = HT_ERROR;
437: break;
438:
439: case 505: /* Unsupported protocol version */
440: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
441: me->reason, (int) strlen(me->reason), "HTTPNextState");
442: http->next = HTTP_ERROR;
443: http->result = HT_BAD_VERSION;
1.71 frystyk 444: break;
1.78 frystyk 445:
1.71 frystyk 446: default: /* bad number */
1.104 frystyk 447: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 448: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 frystyk 449: http->next = HTTP_ERROR;
450: http->result = HT_ERROR;
1.71 frystyk 451: break;
1.55 frystyk 452: }
453: }
454:
1.71 frystyk 455: /* ------------------------------------------------------------------------- */
456: /* HTTP Status Line Stream */
457: /* ------------------------------------------------------------------------- */
1.55 frystyk 458:
1.71 frystyk 459: /*
1.80 frystyk 460: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 461: ** then create a MIME-stream, else create a Guess stream to find out
462: ** what the 0.9 server is sending. We need to copy the buffer as we don't
463: ** know if we can modify the contents or not.
1.78 frystyk 464: **
465: ** Stream handling is a function of the status code returned from the
466: ** server:
467: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 468: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 469: **
470: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 471: */
1.100 frystyk 472: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 473: {
1.136 frystyk 474: HTRequest * request = me->request;
475: HTNet * net = HTRequest_net(request);
1.123 frystyk 476: HTHost * host = HTNet_host(net);
1.80 frystyk 477: if (me->target) {
478: int status = PUTBLOCK(me->buffer, me->buflen);
479: if (status == HT_OK)
480: me->transparent = YES;
481: return status;
1.136 frystyk 482: } else if (HTRequest_isSource(request)&&!HTRequest_outputStream(request)) {
1.88 frystyk 483: /*
484: ** We need to wait for the destinations to get ready
485: */
486: return HT_WOULD_BLOCK;
1.80 frystyk 487: }
1.88 frystyk 488:
1.132 frystyk 489: /*
490: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
491: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
492: */
493: #if 0
1.81 frystyk 494: if (strncasecomp(me->buffer, "http/", 5)) {
1.132 frystyk 495: #else
496: if (strncasecomp(me->buffer, "http", 4)) {
497: #endif
1.80 frystyk 498: int status;
1.136 frystyk 499: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 500: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 501: me->target = HTStreamStack(WWW_UNKNOWN,
502: HTRequest_outputFormat(request),
503: HTRequest_outputStream(request),
504: request, NO);
1.134 frystyk 505: me->http->next = HTTP_OK;
1.80 frystyk 506: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
507: me->transparent = YES;
1.123 frystyk 508: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 509: return status;
510: } else {
1.140 ! frystyk 511: HTResponse * response = HTRequest_response(request);
1.133 frystyk 512: char *ptr = me->buffer+4; /* Skip the HTTP part */
1.81 frystyk 513: me->version = HTNextField(&ptr);
1.95 frystyk 514:
1.130 frystyk 515: /* Here we want to find out when to use persistent connection */
1.133 frystyk 516: if (!strncasecomp(me->version, "/1.0", 4)) {
1.128 frystyk 517: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
518: HTHost_setVersion(host, HTTP_10);
1.133 frystyk 519: } else if (!strncasecomp(me->version, "/1.", 3)) { /* 1.x family */
1.128 frystyk 520: HTHost_setVersion(host, HTTP_11);
1.133 frystyk 521: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE); /* By default */
522: } else {
523: if (PROT_TRACE)HTTrace("HTTP Status. No 1.x version number - treat it as a HTTP/1.0 server\n");
524: HTHost_setVersion(host, HTTP_10);
1.128 frystyk 525: }
1.95 frystyk 526:
1.81 frystyk 527: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 528: /* Kludge to fix the NCSA server version bug */
529: if (me->status == 0) me->status = atoi(me->version);
530:
1.81 frystyk 531: me->reason = ptr;
532: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
533: *ptr = '0円';
534: else if ((ptr = strchr(me->reason, '\n')) != NULL)
535: *ptr = '0円';
536:
1.130 frystyk 537: /*
538: ** If it is a 1xx code then find out what to do and return until we
539: ** get the next code. In the case of Upgrade we may not get back here
540: ** at all. If we are uploading an entity then continue doing that
541: */
542: if (me->status/100 == 1) {
1.136 frystyk 543: if (HTTPInformation(me) == YES) {
544: me->buflen = 0;
545: me->state = EOL_BEGIN;
546: return HTMethod_hasEntity(HTRequest_method(request)) ?
547: HT_CONTINUE : HT_OK;
1.103 frystyk 548: }
1.56 frystyk 549: }
1.133 frystyk 550:
551: /*
552: ** As we are getting fresh metainformation in the HTTP response,
553: ** we clear the old metainfomation in order not to mix it with the new
554: ** one. This is particularly important for the content-length and the
1.139 frystyk 555: ** like. The TRACE and OPTIONS method just adds to the current
556: ** metainformation so in that case we don't clear the anchor.
1.133 frystyk 557: */
1.136 frystyk 558: if (me->status==200 || me->status==203 || me->status==300) {
1.140 ! frystyk 559: /*
! 560: ** 200, 203 and 300 are all fully cacheable responses. No byte
! 561: ** ranges or anything else make life hard in this case.
! 562: */
! 563: HTResponse_setCachable(response, YES);
1.136 frystyk 564: me->target = HTStreamStack(WWW_MIME,
565: HTRequest_outputFormat(request),
566: HTRequest_outputStream(request),
567: request, NO);
1.140 ! frystyk 568: } else if (me->status==206) {
! 569: /*
! 570: ** We got a partial response and now we must check whether
! 571: ** we issued a cache If-Range request or it was a new
! 572: ** partial response which we don't have in cache. In the latter
! 573: ** case, we don't cache the object and in the former we append
! 574: ** the result to the already existing cache entry.
! 575: */
! 576: HTReload reload = HTRequest_reloadMode(request);
! 577: if (reload == HT_CACHE_RANGE_VALIDATE) {
! 578: HTResponse_setCachable(response, YES);
! 579: me->target = HTStreamStack(WWW_MIME_PART,
! 580: HTRequest_outputFormat(request),
! 581: HTRequest_outputStream(request),
! 582: request, NO);
! 583: } else {
! 584: me->target = HTStreamStack(WWW_MIME,
! 585: HTRequest_outputFormat(request),
! 586: HTRequest_outputStream(request),
! 587: request, NO);
! 588: }
1.139 frystyk 589: } else if (me->status==204 || me->status==304) {
1.140 ! frystyk 590: HTResponse_setCachable(response, YES);
1.136 frystyk 591: me->target = HTStreamStack(WWW_MIME_HEAD,
592: HTRequest_debugFormat(request),
593: HTRequest_debugStream(request),
594: request, NO);
595: } else if (HTRequest_debugStream(request)) {
596: me->target = HTStreamStack(WWW_MIME,
597: HTRequest_debugFormat(request),
598: HTRequest_debugStream(request),
599: request, NO);
600: } else {
1.140 ! frystyk 601: /*
! 602: ** We still need to parse the MIME part in order to find any
! 603: ** valuable meta information which is needed from the response.
! 604: */
1.136 frystyk 605: me->target = HTStreamStack(WWW_MIME,
606: HTRequest_debugFormat(request),
607: HTRequest_debugStream(request),
608: request, NO);
1.133 frystyk 609: }
1.56 frystyk 610: }
1.113 frystyk 611: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 612: HTTPNextState(me); /* Get next state */
1.80 frystyk 613: me->transparent = YES;
614: return HT_OK;
1.71 frystyk 615: }
1.56 frystyk 616:
1.80 frystyk 617: /*
618: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
619: ** is found
620: */
1.119 frystyk 621: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 622: {
1.80 frystyk 623: while (!me->transparent && l-- > 0) {
624: int status;
625: if (me->target) {
626: if ((status = stream_pipe(me)) != HT_OK)
627: return status;
628: } else {
629: *(me->buffer+me->buflen++) = *b;
630: if (me->state == EOL_FCR) {
631: if (*b == LF) { /* Line found */
632: if ((status = stream_pipe(me)) != HT_OK)
633: return status;
634: } else {
635: me->state = EOL_BEGIN;
636: }
637: } else if (*b == CR) {
638: me->state = EOL_FCR;
639: } else if (*b == LF) {
640: if ((status = stream_pipe(me)) != HT_OK)
641: return status;
1.71 frystyk 642: } else {
1.80 frystyk 643: if (me->buflen >= MAX_STATUS_LEN) {
644: if ((status = stream_pipe(me)) != HT_OK)
645: return status;
646: }
1.71 frystyk 647: }
1.80 frystyk 648: b++;
1.71 frystyk 649: }
1.56 frystyk 650: }
1.99 frystyk 651: if (l > 0) return PUTBLOCK(b, l);
652: return HT_OK;
1.56 frystyk 653: }
654:
1.119 frystyk 655: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 656: {
1.80 frystyk 657: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 658: }
1.56 frystyk 659:
1.100 frystyk 660: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 661: {
1.80 frystyk 662: return HTTPStatus_put_block(me, &c, 1);
663: }
664:
1.100 frystyk 665: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 666: {
667: return (*me->target->isa->flush)(me->target);
1.71 frystyk 668: }
669:
1.100 frystyk 670: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 671: {
1.87 frystyk 672: int status = HT_OK;
673: if (me->target) {
674: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
675: return HT_WOULD_BLOCK;
676: }
1.115 frystyk 677: HT_FREE(me);
1.100 frystyk 678: return status;
1.71 frystyk 679: }
680:
1.104 frystyk 681: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 682: {
683: if (me->target)
1.74 frystyk 684: ABORT_TARGET;
1.115 frystyk 685: HT_FREE(me);
1.74 frystyk 686: if (PROT_TRACE)
1.116 eric 687: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 688: return HT_ERROR;
1.71 frystyk 689: }
690:
691: /* HTTPStatus Stream
692: ** -----------------
693: */
1.119 frystyk 694: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 695: {
696: "HTTPStatus",
1.80 frystyk 697: HTTPStatus_flush,
1.71 frystyk 698: HTTPStatus_free,
699: HTTPStatus_abort,
700: HTTPStatus_put_character,
701: HTTPStatus_put_string,
702: HTTPStatus_put_block
703: };
704:
1.113 frystyk 705: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
706: void * param,
707: HTFormat input_format,
708: HTFormat output_format,
709: HTStream * output_stream)
1.71 frystyk 710: {
1.115 frystyk 711: HTStream * me;
712: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
713: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 714: me->isa = &HTTPStatusClass;
1.113 frystyk 715: if (request) {
1.126 frystyk 716: HTNet * net = HTRequest_net(request);
1.125 frystyk 717: /* Get existing copy */
718: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 719: me->request = request;
720: me->http = http;
721: http->next = HTTP_ERROR;
722: me->state = EOL_BEGIN;
723: return me;
724: } else
725: return HTErrorStream();
1.71 frystyk 726: }
727:
728: /* ------------------------------------------------------------------------- */
729:
730: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 731: ** ==============================
732: **
733: ** Given a hypertext address, this routine loads a document.
734: **
735: ** On entry,
736: ** request This is the request structure
1.94 frystyk 737: ** returns HT_ERROR Error has occured in call back
738: ** HT_OK Call back was OK
1.55 frystyk 739: */
1.94 frystyk 740: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 741: {
1.71 frystyk 742: int status = HT_ERROR;
1.126 frystyk 743: HTNet * net = HTRequest_net(request); /* Generic protocol information */
1.55 frystyk 744: http_info *http; /* Specific protocol information */
1.112 frystyk 745: HTParentAnchor *anchor = HTRequest_anchor(request);
746:
1.94 frystyk 747: /*
748: ** Initiate a new http structure and bind to request structure
749: ** This is actually state HTTP_BEGIN, but it can't be in the state
750: ** machine as we need the structure first.
751: */
752: if (ops == FD_NONE) {
1.116 eric 753: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
1.112 frystyk 754: HTAnchor_physical(anchor));
1.133 frystyk 755: if (!net->context) {
756: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
757: HT_OUTOFMEM("HTLoadHTTP");
758: HTNet_setContext(net, http);
759: } else {
760: http = (http_info *) HTNet_context(net); /* Get existing copy */
761: }
1.71 frystyk 762: http->state = HTTP_BEGIN;
1.134 frystyk 763: http->next = HTTP_OK;
764: http->result = HT_ERROR;
1.98 frystyk 765: } else if (ops == FD_CLOSE) { /* Interrupted */
1.112 frystyk 766: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
767: NULL, 0, "HTLoadHTTP");
768: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 769: return HT_OK;
770: } else
1.125 frystyk 771: http = (http_info *) HTNet_context(net); /* Get existing copy */
1.71 frystyk 772:
773: /* Now jump into the machine. We know the state from the previous run */
774: while (1) {
775: switch (http->state) {
1.134 frystyk 776: case HTTP_BEGIN:
1.129 frystyk 777: http->state = HTTP_NEED_CONNECTION;
1.71 frystyk 778: break;
779:
1.123 frystyk 780: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
781: status = HTDoConnect(net, HTAnchor_physical(anchor), HTTP_PORT);
1.80 frystyk 782: if (status == HT_OK) {
1.140 ! frystyk 783: HTHost * host = HTNet_host(net);
! 784:
1.123 frystyk 785: /*
1.140 ! frystyk 786: ** Check the protocol class to see if we have connected to a
! 787: ** the right class of server, in this case HTTP. If we don't
! 788: ** know the server then assume a HTTP/1.0
1.123 frystyk 789: */
790: {
791: char * s_class = HTHost_class(host);
1.140 ! frystyk 792: if (!s_class) {
! 793: if (HTRequest_proxy(request) == NULL)
! 794: HTRequest_addConnection(request, "Keep-Alive", "");
! 795: HTHost_setClass(host, "http");
! 796: } else if (strcasecomp(s_class, "http")) {
1.123 frystyk 797: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
798: NULL, 0, "HTLoadHTTP");
799: http->state = HTTP_ERROR;
800: break;
801: }
1.95 frystyk 802: }
1.138 frystyk 803:
1.123 frystyk 804: /*
805: ** Create the stream pipe FROM the channel to the application.
806: ** The target for the input stream pipe is set up using the
807: ** stream stack.
1.113 frystyk 808: */
1.126 frystyk 809: HTNet_getInput(net,
810: HTStreamStack(WWW_HTTP,
811: HTRequest_outputFormat(request),
812: HTRequest_outputStream(request),
813: request, YES), NULL, 0);
1.127 frystyk 814: HTRequest_setOutputConnected(request, YES);
815:
1.123 frystyk 816: /*
817: ** Create the stream pipe TO the channel from the application
818: ** and hook it up to the request object
819: */
820: {
821: HTOutputStream * output = HTNet_getOutput(net, NULL, 0);
1.140 ! frystyk 822: int version = HTHost_version(host);
1.139 frystyk 823: HTStream * app = NULL;
824: #ifdef HTTP_DUMP
825: if (PROT_TRACE) {
1.140 ! frystyk 826: if ((htfp = fopen(HTTP_OUTPUT, "wb"))) {
! 827: output = (HTOutputStream *)
! 828: HTTee((HTStream *) output,
! 829: HTFWriter_new(request, htfp, YES), NULL);
1.139 frystyk 830: HTTrace("HTTP........ Dumping request to `%s\'\n",
831: HTTP_OUTPUT);
832: }
833: }
834: #endif /* HTTP_DUMP */
835: app = HTMethod_hasEntity(HTRequest_method(request)) ?
836: HTMIMERequest_new(request,
1.140 ! frystyk 837: HTTPRequest_new(request, (HTStream *) output, NO,
! 838: version),
! 839: YES) :
! 840: HTTPRequest_new(request, (HTStream *) output, YES,
! 841: version);
1.123 frystyk 842: HTRequest_setInputStream(request, app);
843: }
1.88 frystyk 844:
845: /*
846: ** Set up concurrent read/write if this request isn't the
847: ** source for a PUT or POST. As source we don't start reading
848: ** before all destinations are ready. If destination then
849: ** register the input stream and get ready for read
850: */
1.112 frystyk 851: if (HTRequest_isDestination(request)) {
1.124 eric 852: HTEvent_register(net->sockfd, request, (SockOps) FD_READ,
1.94 frystyk 853: HTLoadHTTP, net->priority);
1.88 frystyk 854: HTRequest_linkDestination(request);
855: }
1.71 frystyk 856: http->state = HTTP_NEED_REQUEST;
1.133 frystyk 857: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.94 frystyk 858: return HT_OK;
1.71 frystyk 859: else
860: http->state = HTTP_ERROR; /* Error or interrupt */
861: break;
862:
1.87 frystyk 863: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 864: case HTTP_NEED_REQUEST:
1.94 frystyk 865: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 866: if (HTRequest_isDestination(request)) {
1.126 frystyk 867: HTRequest * source = HTRequest_source(request);
868: HTNet * srcnet = HTRequest_net(source);
1.112 frystyk 869: if (srcnet) {
1.126 frystyk 870: SOCKET sockfd = HTNet_socket(srcnet);
871: HTEvent_register(sockfd, source,
1.112 frystyk 872: (SockOps) FD_READ,
873: srcnet->cbf, srcnet->priority);
1.126 frystyk 874: HTEvent_unregister(sockfd, FD_WRITE);
1.112 frystyk 875: }
1.94 frystyk 876: return HT_OK;
1.80 frystyk 877: }
1.126 frystyk 878:
879: /*
880: ** Should we use the input stream directly or call the post
881: ** callback function to send data down to the network?
882: */
883: {
884: HTStream * input = HTRequest_inputStream(request);
885: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 886: if (pcbf) {
1.139 frystyk 887: if (http->lock)
888: return HT_OK;
889: else {
890: status = pcbf(request, input);
1.140 ! frystyk 891: if (status == HT_PAUSE || status == HT_LOADED) {
1.139 frystyk 892: ops = FD_READ;
893: http->lock = YES;
1.140 ! frystyk 894: } else if (status == HT_ERROR) {
1.139 frystyk 895: http->result = HT_INTERRUPTED;
896: http->state = HTTP_ERROR;
897: break;
898: }
899: }
1.131 frystyk 900: } else {
901: status = (*input->isa->flush)(input);
1.126 frystyk 902: ops = FD_READ; /* Trick to ensure that we do READ */
1.131 frystyk 903: }
904: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 905: }
1.94 frystyk 906: } else if (ops == FD_READ) {
1.123 frystyk 907: status = (*net->input->isa->read)(net->input);
1.131 frystyk 908: if (status == HT_WOULD_BLOCK)
1.94 frystyk 909: return HT_OK;
1.131 frystyk 910: else if (status == HT_CONTINUE) {
1.130 frystyk 911: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
1.139 frystyk 912: http->lock = NO;
1.130 frystyk 913: ops = FD_WRITE;
914: continue;
1.133 frystyk 915: } else if (status==HT_LOADED)
1.94 frystyk 916: http->state = http->next; /* Jump to next state */
1.133 frystyk 917: else if (status==HT_CLOSED) {
918: HTHost * host = HTNet_host(net);
919:
920: /*
921: ** If this is a persistent connection and we get a close
922: ** then it is an error and we should recover from it by
923: ** restarting the pipe line of requests if any
924: */
925: if (HTHost_isPersistent(host)) {
1.135 frystyk 926: http->result = HT_RECOVER_PIPE;
1.133 frystyk 927: http->state = HTTP_ERROR;
928: break;
929: } else
1.134 frystyk 930: http->state = HTTP_OK;
1.133 frystyk 931: } else
1.94 frystyk 932: http->state = HTTP_ERROR;
1.90 frystyk 933: } else {
1.78 frystyk 934: http->state = HTTP_ERROR;
1.90 frystyk 935: }
1.71 frystyk 936: break;
1.80 frystyk 937:
1.134 frystyk 938: case HTTP_OK:
1.88 frystyk 939: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 940: if (HTRequest_isDestination(request)) {
1.126 frystyk 941: HTRequest * source = HTRequest_source(request);
1.91 frystyk 942: HTLink *link =
1.127 frystyk 943: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 944: (HTAnchor *) anchor);
1.109 frystyk 945: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 946: }
1.112 frystyk 947: }
1.134 frystyk 948: HTTPCleanup(request, http->result);
1.94 frystyk 949: return HT_OK;
1.71 frystyk 950: break;
1.80 frystyk 951:
1.71 frystyk 952: case HTTP_ERROR:
1.88 frystyk 953: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 954: if (HTRequest_isDestination(request)) {
1.126 frystyk 955: HTRequest * source = HTRequest_source(request);
1.91 frystyk 956: HTLink *link =
1.127 frystyk 957: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 958: (HTAnchor *) anchor);
1.109 frystyk 959: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 960: }
1.112 frystyk 961: HTRequest_killPostWeb(request);
962: }
1.134 frystyk 963: HTTPCleanup(request, http->result);
1.94 frystyk 964: return HT_OK;
1.71 frystyk 965: break;
966: }
967: } /* End of while(1) */
968: }
1.88 frystyk 969:
1.21 luotonen 970:
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