Annotation of libwww/Library/src/HTTP.c, revision 1.146
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.
1.146 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.145 1997年01月23日 19:50:03 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 {
1.141 frystyk 54: HTTP_RECOVER_PIPE = -3,
1.134 frystyk 55: HTTP_ERROR = -2,
56: HTTP_OK = -1,
1.71 frystyk 57: HTTP_BEGIN = 0,
1.144 frystyk 58: HTTP_NEED_STREAM,
1.141 frystyk 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 */
65: HTTPState next; /* Next state */
1.134 frystyk 66: int result; /* Result to report to the after filter */
1.139 frystyk 67: BOOL lock; /* Block for writing */
1.141 frystyk 68: HTNet * net;
1.55 frystyk 69: } http_info;
70:
1.88 frystyk 71: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 72:
1.71 frystyk 73: struct _HTStream {
1.119 frystyk 74: const HTStreamClass * isa;
1.71 frystyk 75: HTStream * target;
76: HTRequest * request;
77: http_info * http;
1.121 frystyk 78: HTEOLState state;
1.71 frystyk 79: BOOL transparent;
1.81 frystyk 80: char * version; /* Should we save this? */
1.71 frystyk 81: int status;
1.81 frystyk 82: char * reason;
1.71 frystyk 83: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 84: int buflen;
1.146 ! frystyk 85: int startLen;/* buflen when put_block was called */
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:
1.144 frystyk 107: if (PROT_TRACE)
108: HTTrace("HTTP Clean.. Called with status %d, net %p\n", status, net);
109:
1.94 frystyk 110: /* Free stream with data TO network */
1.112 frystyk 111: if (HTRequest_isDestination(req))
112: HTRequest_removeDestination(req);
1.126 frystyk 113: else if (input) {
1.145 frystyk 114: if (status == HT_INTERRUPTED || status == HT_RECOVER_PIPE)
1.126 frystyk 115: (*input->isa->abort)(input, NULL);
1.94 frystyk 116: else
1.126 frystyk 117: (*input->isa->_free)(input);
118: HTRequest_setInputStream(req, NULL);
1.94 frystyk 119: }
1.88 frystyk 120:
1.140 frystyk 121: #ifdef HTTP_DUMP
122: if (htfp) {
123: fclose(htfp);
124: htfp = NULL;
125: }
126: #endif
127:
1.144 frystyk 128: /*
129: ** Remove the request object and our own context structure for http.
130: */
131: if (status != HT_RECOVER_PIPE) {
132: HTNet_delete(net, status);
1.141 frystyk 133: HT_FREE(http);
134: }
1.94 frystyk 135: return YES;
1.55 frystyk 136: }
137:
1.71 frystyk 138: /*
1.130 frystyk 139: ** Informational 1xx codes are handled separately
1.136 frystyk 140: ** Returns YES if we should continue, NO if we should stop
1.55 frystyk 141: */
1.130 frystyk 142: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 143: {
1.136 frystyk 144: http_info * http = me->http;
1.71 frystyk 145: switch (me->status) {
146:
1.136 frystyk 147: case 100:
148: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
149: me->reason, (int) strlen(me->reason),
150: "HTTPInformation");
151: return YES;
152: break;
153:
1.130 frystyk 154: case 101:
1.136 frystyk 155: /*
156: ** We consider 101 Switching as a final state and exit this request
157: */
1.130 frystyk 158: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 159: me->reason, (int) strlen(me->reason),
1.130 frystyk 160: "HTTPInformation");
1.136 frystyk 161: http->next = HTTP_OK;
162: http->result = HT_UPGRADE;
1.127 frystyk 163: break;
164:
1.130 frystyk 165: default:
1.136 frystyk 166: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
167: (void *) me->buffer, me->buflen, "HTTPNextState");
168: http->next = HTTP_ERROR;
169: http->result = HT_ERROR;
1.127 frystyk 170: break;
1.130 frystyk 171: }
1.136 frystyk 172: return NO;
1.130 frystyk 173: }
174:
175: /*
176: ** This is a big switch handling all HTTP return codes. It puts in any
177: ** appropiate error message and decides whether we should expect data
178: ** or not.
179: */
180: PRIVATE void HTTPNextState (HTStream * me)
181: {
1.134 frystyk 182: http_info * http = me->http;
1.130 frystyk 183: switch (me->status) {
1.127 frystyk 184:
1.78 frystyk 185: case 0: /* 0.9 response */
1.127 frystyk 186: case 200: /* OK */
187: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
188: me->reason, (int) strlen(me->reason),
189: "HTTPNextState");
1.134 frystyk 190: http->next = HTTP_OK;
191: http->result = HT_LOADED;
1.112 frystyk 192: break;
193:
1.127 frystyk 194: case 201: /* Created */
1.112 frystyk 195: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
196: me->reason, (int) strlen(me->reason),
197: "HTTPNextState");
1.134 frystyk 198: http->next = HTTP_OK;
199: http->result = HT_CREATED;
1.112 frystyk 200: break;
201:
1.127 frystyk 202: case 202: /* Accepted */
1.112 frystyk 203: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
204: me->reason, (int) strlen(me->reason),
205: "HTTPNextState");
1.134 frystyk 206: http->next = HTTP_OK;
207: http->result = HT_ACCEPTED;
1.112 frystyk 208: break;
209:
1.127 frystyk 210: case 203: /* Non-authoritative information */
211: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 212: me->reason, (int) strlen(me->reason),
213: "HTTPNextState");
1.134 frystyk 214: http->next = HTTP_OK;
215: http->result = HT_LOADED;
1.71 frystyk 216: break;
1.78 frystyk 217:
218: case 204: /* No Response */
1.112 frystyk 219: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
220: me->reason, (int) strlen(me->reason),
221: "HTTPNextState");
1.134 frystyk 222: http->next = HTTP_OK;
223: http->result = HT_NO_DATA;
224: break;
225:
226: case 205: /* Reset Content */
227: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
228: me->reason, (int) strlen(me->reason),
229: "HTTPNextState");
230: http->next = HTTP_OK;
231: http->result = HT_RESET_CONTENT;
232: break;
233:
234: case 206: /* Partial Content */
235: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
236: me->reason, (int) strlen(me->reason),
237: "HTTPNextState");
238: http->next = HTTP_OK;
239: http->result = HT_PARTIAL_CONTENT;
240: break;
241:
242: case 300: /* Multiple Choices */
243: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
244: me->reason, (int) strlen(me->reason),
245: "HTTPNextState");
246: http->next = HTTP_OK;
247: http->result = HT_LOADED;
1.71 frystyk 248: break;
1.78 frystyk 249:
1.71 frystyk 250: case 301: /* Moved */
1.112 frystyk 251: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
252: me->reason, (int) strlen(me->reason),
253: "HTTPNextState");
1.134 frystyk 254: http->next = HTTP_ERROR;
255: http->result = HT_PERM_REDIRECT;
1.112 frystyk 256: break;
257:
1.71 frystyk 258: case 302: /* Found */
1.112 frystyk 259: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
260: me->reason, (int) strlen(me->reason),
261: "HTTPNextState");
1.134 frystyk 262: http->next = HTTP_ERROR;
263: http->result = HT_TEMP_REDIRECT;
1.71 frystyk 264: break;
1.55 frystyk 265:
1.71 frystyk 266: case 303: /* Method */
1.107 frystyk 267: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
268: me->reason, (int) strlen(me->reason),
269: "HTTPNextState");
1.134 frystyk 270: http->next = HTTP_ERROR;
271: http->result = HT_SEE_OTHER;
1.71 frystyk 272: break;
1.91 frystyk 273:
274: case 304: /* Not Modified */
1.131 frystyk 275: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 276: me->reason, (int) strlen(me->reason),
277: "HTTPNextState");
1.135 frystyk 278: http->next = HTTP_OK;
1.134 frystyk 279: http->result = HT_NOT_MODIFIED;
280: break;
281:
282: case 305: /* Use proxy */
283: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
284: me->reason, (int) strlen(me->reason),
285: "HTTPNextState");
286: http->next = HTTP_ERROR;
287: http->result = HT_USE_PROXY;
1.91 frystyk 288: break;
1.55 frystyk 289:
1.78 frystyk 290: case 400: /* Bad Request */
1.104 frystyk 291: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 292: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 293: http->next = HTTP_ERROR;
294: http->result = HT_ERROR;
1.71 frystyk 295: break;
1.70 howcome 296:
1.71 frystyk 297: case 401:
1.104 frystyk 298: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 299: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 300: http->next = HTTP_ERROR;
301: http->result = HT_NO_ACCESS;
1.71 frystyk 302: break;
303:
304: case 402: /* Payment required */
1.104 frystyk 305: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 306: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 307: http->next = HTTP_ERROR;
308: http->result = HT_ERROR;
1.71 frystyk 309: break;
1.55 frystyk 310:
1.71 frystyk 311: case 403: /* Forbidden */
1.104 frystyk 312: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 313: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 314: http->next = HTTP_ERROR;
315: http->result = HT_FORBIDDEN;
1.71 frystyk 316: break;
1.55 frystyk 317:
1.71 frystyk 318: case 404: /* Not Found */
1.104 frystyk 319: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 320: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 321: http->next = HTTP_ERROR;
322: http->result = HT_ERROR;
1.71 frystyk 323: break;
324:
1.78 frystyk 325: case 405: /* Not Allowed */
1.104 frystyk 326: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 327: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 328: http->next = HTTP_ERROR;
329: http->result = HT_ERROR;
1.78 frystyk 330: break;
331:
332: case 406: /* None Acceptable */
1.104 frystyk 333: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 334: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 335: http->next = HTTP_ERROR;
336: http->result = HT_NOT_ACCEPTABLE;
1.78 frystyk 337: break;
338:
339: case 407: /* Proxy Authentication Required */
1.127 frystyk 340: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 341: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 342: http->next = HTTP_ERROR;
343: http->result = HT_NO_PROXY_ACCESS;
1.78 frystyk 344: break;
345:
346: case 408: /* Request Timeout */
1.104 frystyk 347: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 348: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 349: http->next = HTTP_ERROR;
350: http->result = HT_ERROR;
351: break;
352:
353: case 409: /* Conflict */
354: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
355: me->reason, (int) strlen(me->reason), "HTTPNextState");
356: http->next = HTTP_ERROR;
357: http->result = HT_CONFLICT;
358: break;
359:
360: case 410: /* Gone */
361: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
362: me->reason, (int) strlen(me->reason), "HTTPNextState");
363: http->next = HTTP_ERROR;
364: http->result = HT_ERROR;
365: break;
366:
367: case 411: /* Length Required */
368: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
369: me->reason, (int) strlen(me->reason), "HTTPNextState");
370: http->next = HTTP_ERROR;
371: http->result = HT_LENGTH_REQUIRED;
372: break;
373:
374: case 412: /* Precondition failed */
375: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
376: me->reason, (int) strlen(me->reason), "HTTPNextState");
377: http->next = HTTP_ERROR;
378: http->result = HT_ERROR;
379: break;
380:
381: case 413: /* Request entity too large */
382: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
383: me->reason, (int) strlen(me->reason), "HTTPNextState");
384: http->next = HTTP_ERROR;
385: http->result = HT_ERROR;
386: break;
387:
388: case 414: /* Request-URI too long */
389: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
390: me->reason, (int) strlen(me->reason), "HTTPNextState");
391: http->next = HTTP_ERROR;
392: http->result = HT_ERROR;
393: break;
394:
395: case 415: /* Unsupported */
396: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
397: me->reason, (int) strlen(me->reason), "HTTPNextState");
398: http->next = HTTP_ERROR;
399: http->result = HT_ERROR;
1.78 frystyk 400: break;
401:
1.71 frystyk 402: case 500:
1.104 frystyk 403: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 404: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 405: http->next = HTTP_ERROR;
406: http->result = HT_ERROR;
1.78 frystyk 407: break;
408:
1.71 frystyk 409: case 501:
1.104 frystyk 410: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 411: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 412: http->next = HTTP_ERROR;
413: http->result = HT_ERROR;
1.78 frystyk 414: break;
415:
416: case 502:
1.104 frystyk 417: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 418: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 419: http->next = HTTP_ERROR;
420: http->result = HT_ERROR;
1.78 frystyk 421: break;
422:
423: case 503:
1.104 frystyk 424: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 425: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 426: http->next = HTTP_ERROR;
1.81 frystyk 427:
1.140 frystyk 428: /*
429: ** If Retry-After header is found then return HT_RETRY else HT_ERROR.
430: ** The caller may want to reissue the request at a later point in time.
431: */
432: {
433: HTResponse * response = HTRequest_response(me->request);
434: if (HTResponse_retryTime(response))
435: http->result = HT_RETRY;
436: else
437: http->result = HT_ERROR;
438: }
1.78 frystyk 439: break;
440:
441: case 504:
1.104 frystyk 442: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 443: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 444: http->next = HTTP_ERROR;
445: http->result = HT_ERROR;
446: break;
447:
448: case 505: /* Unsupported protocol version */
449: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
450: me->reason, (int) strlen(me->reason), "HTTPNextState");
451: http->next = HTTP_ERROR;
452: http->result = HT_BAD_VERSION;
1.71 frystyk 453: break;
1.78 frystyk 454:
1.71 frystyk 455: default: /* bad number */
1.104 frystyk 456: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 457: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 frystyk 458: http->next = HTTP_ERROR;
459: http->result = HT_ERROR;
1.71 frystyk 460: break;
1.55 frystyk 461: }
462: }
463:
1.71 frystyk 464: /* ------------------------------------------------------------------------- */
465: /* HTTP Status Line Stream */
466: /* ------------------------------------------------------------------------- */
1.55 frystyk 467:
1.71 frystyk 468: /*
1.141 frystyk 469: ** Analyze the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 470: ** then create a MIME-stream, else create a Guess stream to find out
471: ** what the 0.9 server is sending. We need to copy the buffer as we don't
472: ** know if we can modify the contents or not.
1.78 frystyk 473: **
474: ** Stream handling is a function of the status code returned from the
475: ** server:
476: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 477: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 478: **
479: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 480: */
1.100 frystyk 481: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 482: {
1.136 frystyk 483: HTRequest * request = me->request;
484: HTNet * net = HTRequest_net(request);
1.123 frystyk 485: HTHost * host = HTNet_host(net);
1.141 frystyk 486:
1.80 frystyk 487: if (me->target) {
488: int status = PUTBLOCK(me->buffer, me->buflen);
489: if (status == HT_OK)
490: me->transparent = YES;
491: return status;
1.136 frystyk 492: } else if (HTRequest_isSource(request)&&!HTRequest_outputStream(request)) {
1.88 frystyk 493: /*
494: ** We need to wait for the destinations to get ready
495: */
496: return HT_WOULD_BLOCK;
1.80 frystyk 497: }
1.88 frystyk 498:
1.132 frystyk 499: /*
500: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
501: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
1.141 frystyk 502:
1.132 frystyk 503: */
504: #if 0
1.81 frystyk 505: if (strncasecomp(me->buffer, "http/", 5)) {
1.132 frystyk 506: #else
507: if (strncasecomp(me->buffer, "http", 4)) {
508: #endif
1.80 frystyk 509: int status;
1.136 frystyk 510: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 511: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 512: me->target = HTStreamStack(WWW_UNKNOWN,
513: HTRequest_outputFormat(request),
514: HTRequest_outputStream(request),
515: request, NO);
1.134 frystyk 516: me->http->next = HTTP_OK;
1.80 frystyk 517: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
518: me->transparent = YES;
1.123 frystyk 519: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 520: return status;
521: } else {
1.140 frystyk 522: HTResponse * response = HTRequest_response(request);
1.133 frystyk 523: char *ptr = me->buffer+4; /* Skip the HTTP part */
1.81 frystyk 524: me->version = HTNextField(&ptr);
1.146 ! frystyk 525: HTHost_setConsumed(net->host, me->buflen - me->startLen);
1.95 frystyk 526:
1.130 frystyk 527: /* Here we want to find out when to use persistent connection */
1.133 frystyk 528: if (!strncasecomp(me->version, "/1.0", 4)) {
1.128 frystyk 529: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
530: HTHost_setVersion(host, HTTP_10);
1.133 frystyk 531: } else if (!strncasecomp(me->version, "/1.", 3)) { /* 1.x family */
1.128 frystyk 532: HTHost_setVersion(host, HTTP_11);
1.141 frystyk 533: #ifdef HT_MUX
534: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE);
535: #else
1.145 frystyk 536: #ifdef HT_NO_PIPELINING
537: HTNet_setPersistent(net, YES, HT_TP_SINGLE);
538: #else
1.141 frystyk 539: HTNet_setPersistent(net, YES, HT_TP_PIPELINE);
1.145 frystyk 540: #endif /* HT_NO_PIPELINING */
541: #endif /* HT_MUX */
1.133 frystyk 542: } else {
543: if (PROT_TRACE)HTTrace("HTTP Status. No 1.x version number - treat it as a HTTP/1.0 server\n");
544: HTHost_setVersion(host, HTTP_10);
1.128 frystyk 545: }
1.95 frystyk 546:
1.81 frystyk 547: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 548: /* Kludge to fix the NCSA server version bug */
549: if (me->status == 0) me->status = atoi(me->version);
550:
1.81 frystyk 551: me->reason = ptr;
552: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
553: *ptr = '0円';
554: else if ((ptr = strchr(me->reason, '\n')) != NULL)
555: *ptr = '0円';
556:
1.130 frystyk 557: /*
558: ** If it is a 1xx code then find out what to do and return until we
559: ** get the next code. In the case of Upgrade we may not get back here
560: ** at all. If we are uploading an entity then continue doing that
561: */
562: if (me->status/100 == 1) {
1.136 frystyk 563: if (HTTPInformation(me) == YES) {
564: me->buflen = 0;
565: me->state = EOL_BEGIN;
566: return HTMethod_hasEntity(HTRequest_method(request)) ?
567: HT_CONTINUE : HT_OK;
1.103 frystyk 568: }
1.56 frystyk 569: }
1.133 frystyk 570:
571: /*
572: ** As we are getting fresh metainformation in the HTTP response,
573: ** we clear the old metainfomation in order not to mix it with the new
574: ** one. This is particularly important for the content-length and the
1.139 frystyk 575: ** like. The TRACE and OPTIONS method just adds to the current
576: ** metainformation so in that case we don't clear the anchor.
1.133 frystyk 577: */
1.136 frystyk 578: if (me->status==200 || me->status==203 || me->status==300) {
1.140 frystyk 579: /*
580: ** 200, 203 and 300 are all fully cacheable responses. No byte
581: ** ranges or anything else make life hard in this case.
582: */
583: HTResponse_setCachable(response, YES);
1.136 frystyk 584: me->target = HTStreamStack(WWW_MIME,
585: HTRequest_outputFormat(request),
586: HTRequest_outputStream(request),
587: request, NO);
1.140 frystyk 588: } else if (me->status==206) {
589: /*
590: ** We got a partial response and now we must check whether
591: ** we issued a cache If-Range request or it was a new
592: ** partial response which we don't have in cache. In the latter
593: ** case, we don't cache the object and in the former we append
594: ** the result to the already existing cache entry.
595: */
596: HTReload reload = HTRequest_reloadMode(request);
597: if (reload == HT_CACHE_RANGE_VALIDATE) {
598: HTResponse_setCachable(response, YES);
599: me->target = HTStreamStack(WWW_MIME_PART,
600: HTRequest_outputFormat(request),
601: HTRequest_outputStream(request),
602: request, NO);
603: } else {
604: me->target = HTStreamStack(WWW_MIME,
605: HTRequest_outputFormat(request),
606: HTRequest_outputStream(request),
607: request, NO);
608: }
1.139 frystyk 609: } else if (me->status==204 || me->status==304) {
1.140 frystyk 610: HTResponse_setCachable(response, YES);
1.136 frystyk 611: me->target = HTStreamStack(WWW_MIME_HEAD,
612: HTRequest_debugFormat(request),
613: HTRequest_debugStream(request),
614: request, NO);
615: } else if (HTRequest_debugStream(request)) {
616: me->target = HTStreamStack(WWW_MIME,
617: HTRequest_debugFormat(request),
618: HTRequest_debugStream(request),
619: request, NO);
620: } else {
1.140 frystyk 621: /*
622: ** We still need to parse the MIME part in order to find any
623: ** valuable meta information which is needed from the response.
624: */
1.136 frystyk 625: me->target = HTStreamStack(WWW_MIME,
626: HTRequest_debugFormat(request),
627: HTRequest_debugStream(request),
628: request, NO);
1.133 frystyk 629: }
1.56 frystyk 630: }
1.113 frystyk 631: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 632: HTTPNextState(me); /* Get next state */
1.80 frystyk 633: me->transparent = YES;
634: return HT_OK;
1.71 frystyk 635: }
1.56 frystyk 636:
1.80 frystyk 637: /*
638: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
639: ** is found
640: */
1.119 frystyk 641: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 642: {
1.146 ! frystyk 643: me->startLen = me->buflen;
1.80 frystyk 644: while (!me->transparent && l-- > 0) {
645: int status;
646: if (me->target) {
647: if ((status = stream_pipe(me)) != HT_OK)
648: return status;
649: } else {
650: *(me->buffer+me->buflen++) = *b;
651: if (me->state == EOL_FCR) {
652: if (*b == LF) { /* Line found */
653: if ((status = stream_pipe(me)) != HT_OK)
654: return status;
655: } else {
656: me->state = EOL_BEGIN;
657: }
658: } else if (*b == CR) {
659: me->state = EOL_FCR;
660: } else if (*b == LF) {
661: if ((status = stream_pipe(me)) != HT_OK)
662: return status;
1.71 frystyk 663: } else {
1.80 frystyk 664: if (me->buflen >= MAX_STATUS_LEN) {
665: if ((status = stream_pipe(me)) != HT_OK)
666: return status;
667: }
1.71 frystyk 668: }
1.80 frystyk 669: b++;
1.71 frystyk 670: }
1.56 frystyk 671: }
1.99 frystyk 672: if (l > 0) return PUTBLOCK(b, l);
673: return HT_OK;
1.56 frystyk 674: }
675:
1.119 frystyk 676: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 677: {
1.80 frystyk 678: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 679: }
1.56 frystyk 680:
1.100 frystyk 681: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 682: {
1.80 frystyk 683: return HTTPStatus_put_block(me, &c, 1);
684: }
685:
1.100 frystyk 686: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 687: {
688: return (*me->target->isa->flush)(me->target);
1.71 frystyk 689: }
690:
1.100 frystyk 691: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 692: {
1.87 frystyk 693: int status = HT_OK;
694: if (me->target) {
695: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
696: return HT_WOULD_BLOCK;
697: }
1.115 frystyk 698: HT_FREE(me);
1.100 frystyk 699: return status;
1.71 frystyk 700: }
701:
1.104 frystyk 702: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 703: {
704: if (me->target)
1.74 frystyk 705: ABORT_TARGET;
1.115 frystyk 706: HT_FREE(me);
1.74 frystyk 707: if (PROT_TRACE)
1.116 eric 708: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 709: return HT_ERROR;
1.71 frystyk 710: }
711:
712: /* HTTPStatus Stream
713: ** -----------------
714: */
1.119 frystyk 715: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 716: {
717: "HTTPStatus",
1.80 frystyk 718: HTTPStatus_flush,
1.71 frystyk 719: HTTPStatus_free,
720: HTTPStatus_abort,
721: HTTPStatus_put_character,
722: HTTPStatus_put_string,
723: HTTPStatus_put_block
724: };
725:
1.113 frystyk 726: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
727: void * param,
728: HTFormat input_format,
729: HTFormat output_format,
730: HTStream * output_stream)
1.71 frystyk 731: {
1.115 frystyk 732: HTStream * me;
733: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
734: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 735: me->isa = &HTTPStatusClass;
1.113 frystyk 736: if (request) {
1.126 frystyk 737: HTNet * net = HTRequest_net(request);
1.125 frystyk 738: /* Get existing copy */
739: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 740: me->request = request;
741: me->http = http;
742: http->next = HTTP_ERROR;
743: me->state = EOL_BEGIN;
744: return me;
745: } else
746: return HTErrorStream();
1.71 frystyk 747: }
748:
749: /* ------------------------------------------------------------------------- */
750:
751: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 752: ** ==============================
753: **
754: ** Given a hypertext address, this routine loads a document.
755: **
756: ** On entry,
757: ** request This is the request structure
1.94 frystyk 758: ** returns HT_ERROR Error has occured in call back
759: ** HT_OK Call back was OK
1.55 frystyk 760: */
1.141 frystyk 761: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type);
762:
763: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request)
1.55 frystyk 764: {
765: http_info *http; /* Specific protocol information */
1.112 frystyk 766: HTParentAnchor *anchor = HTRequest_anchor(request);
1.141 frystyk 767: HTNet * net = HTRequest_net(request);
1.112 frystyk 768:
1.94 frystyk 769: /*
770: ** Initiate a new http structure and bind to request structure
771: ** This is actually state HTTP_BEGIN, but it can't be in the state
772: ** machine as we need the structure first.
773: */
1.141 frystyk 774: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
775: HTAnchor_physical(anchor));
776: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
777: HT_OUTOFMEM("HTLoadHTTP");
778: http->net = net;
779: HTNet_setContext(net, http);
780: HTNet_setEventCallback(net, HTTPEvent);
781: HTNet_setEventParam(net, http); /* callbacks get http* */
782:
783: return HTTPEvent(soc, http, HTEvent_BEGIN); /* get it started - ops is ignored */
784: }
785:
786: PRIVATE int HTTPEvent (SOCKET soc, void * pVoid, HTEventType type)
787: {
788: http_info * http = (http_info *)pVoid;
789: int status = HT_ERROR;
790: HTNet * net = http->net;
791: HTRequest * request = HTNet_request(net);
1.144 frystyk 792: HTParentAnchor * anchor = HTRequest_anchor(request);
793: HTHost * host = HTNet_host(net);
1.141 frystyk 794:
795: /*
796: ** Check whether we have been interrupted
797: */
798: if (type == HTEvent_BEGIN) {
1.134 frystyk 799: http->next = HTTP_OK;
800: http->result = HT_ERROR;
1.141 frystyk 801: } else if (type == HTEvent_CLOSE) {
1.112 frystyk 802: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
803: NULL, 0, "HTLoadHTTP");
804: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 805: return HT_OK;
1.141 frystyk 806: } else if (type == HTEvent_END) {
807: HTTPCleanup(request, http->result);
808: return HT_OK;
809: } else if (type == HTEvent_RESET) {
810: HTTPCleanup(request, HT_RECOVER_PIPE);
1.145 frystyk 811: http->state = HTTP_BEGIN;
1.141 frystyk 812: return HT_OK;
813: }
814:
1.71 frystyk 815: /* Now jump into the machine. We know the state from the previous run */
816: while (1) {
817: switch (http->state) {
1.134 frystyk 818: case HTTP_BEGIN:
1.144 frystyk 819: status = HTHost_connect(host, net, HTAnchor_physical(anchor), HTTP_PORT);
820: host = HTNet_host(net);
1.80 frystyk 821: if (status == HT_OK) {
1.140 frystyk 822:
1.123 frystyk 823: /*
1.140 frystyk 824: ** Check the protocol class to see if we have connected to a
825: ** the right class of server, in this case HTTP. If we don't
826: ** know the server then assume a HTTP/1.0
1.123 frystyk 827: */
828: {
829: char * s_class = HTHost_class(host);
1.140 frystyk 830: if (!s_class) {
831: if (HTRequest_proxy(request) == NULL)
832: HTRequest_addConnection(request, "Keep-Alive", "");
833: HTHost_setClass(host, "http");
834: } else if (strcasecomp(s_class, "http")) {
1.123 frystyk 835: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
836: NULL, 0, "HTLoadHTTP");
837: http->state = HTTP_ERROR;
838: break;
839: }
1.95 frystyk 840: }
1.144 frystyk 841: http->state = HTTP_NEED_STREAM;
842: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
843: return HT_OK;
844: else
845: http->state = HTTP_ERROR; /* Error or interrupt */
846: break;
847:
848: case HTTP_NEED_STREAM:
1.138 frystyk 849:
1.144 frystyk 850: #if 0
851: HTChannel_upSemaphore(host->channel);
852: #endif
853:
854: /*
855: ** Create the stream pipe FROM the channel to the application.
856: ** The target for the input stream pipe is set up using the
857: ** stream stack.
858: */
859: {
860: HTStream *me=HTStreamStack(WWW_HTTP,
861: HTRequest_outputFormat(request),
862: HTRequest_outputStream(request),
863: request, YES);
864: HTNet_setReadStream(net, me);
865: HTRequest_setOutputConnected(request, YES);
866: }
1.127 frystyk 867:
1.144 frystyk 868: /*
869: ** Create the stream pipe TO the channel from the application
870: ** and hook it up to the request object
871: */
872: {
873: HTChannel * channel = HTHost_channel(host);
874: HTOutputStream * output = HTChannel_getChannelOStream(channel);
875: int version = HTHost_version(host);
876: HTStream * app = NULL;
877:
1.123 frystyk 878: /*
1.144 frystyk 879: ** Instead of calling this directly we could have a
880: ** stream stack builder on the output stream as well
1.123 frystyk 881: */
1.141 frystyk 882: #ifdef HT_MUX
1.144 frystyk 883: output = (HTOutputStream *)
884: HTBuffer_new(HTMuxWriter_new(host, net, output), request, 512);
1.141 frystyk 885: #endif
886:
1.139 frystyk 887: #ifdef HTTP_DUMP
1.144 frystyk 888: if (PROT_TRACE) {
889: if ((htfp = fopen(HTTP_OUTPUT, "ab"))) {
890: output = (HTOutputStream *)
891: HTTee((HTStream *) output,
892: HTFWriter_new(request, htfp, YES), NULL);
893: HTTrace("HTTP........ Dumping request to `%s\'\n",
894: HTTP_OUTPUT);
895: }
896: }
1.139 frystyk 897: #endif /* HTTP_DUMP */
1.144 frystyk 898: app = HTMethod_hasEntity(HTRequest_method(request)) ?
899: HTMIMERequest_new(request,
900: HTTPRequest_new(request, (HTStream *) output, NO,
901: version),
902: YES) :
903: HTTPRequest_new(request, (HTStream *) output, YES, version);
904: HTRequest_setInputStream(request, app);
905: }
1.88 frystyk 906:
1.144 frystyk 907: /*
908: ** Set up concurrent read/write if this request isn't the
909: ** source for a PUT or POST. As source we don't start reading
910: ** before all destinations are ready. If destination then
911: ** register the input stream and get ready for read
912: */
913: if (HTRequest_isDestination(request)) {
914: HTHost_register(host, net, HTEvent_READ);
915: HTRequest_linkDestination(request);
916: }
917: http->state = HTTP_CONNECTED;
918: type = HTEvent_WRITE; /* fresh, so try a write */
1.71 frystyk 919: break;
920:
1.87 frystyk 921: /* As we can do simultanous read and write this is now one state */
1.141 frystyk 922: case HTTP_CONNECTED:
923: if (type == HTEvent_WRITE) {
924: if (HTRequest_isDestination(request)) {
925: HTRequest * source = HTRequest_source(request);
926: HTNet * srcnet = HTRequest_net(source);
927: if (srcnet) {
928: HTHost_register(srcnet->host, srcnet, HTEvent_READ);
929: HTHost_unregister(srcnet->host, srcnet, HTEvent_WRITE);
930: }
931: return HT_OK;
932: }
1.126 frystyk 933:
934: /*
935: ** Should we use the input stream directly or call the post
936: ** callback function to send data down to the network?
937: */
938: {
939: HTStream * input = HTRequest_inputStream(request);
940: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 941: if (pcbf) {
1.139 frystyk 942: if (http->lock)
943: return HT_OK;
944: else {
1.141 frystyk 945: status = (*pcbf)(request, input);
1.140 frystyk 946: if (status == HT_PAUSE || status == HT_LOADED) {
1.141 frystyk 947: type = HTEvent_READ;
1.139 frystyk 948: http->lock = YES;
1.141 frystyk 949: } else if (status==HT_CLOSED)
950: http->state = HTTP_RECOVER_PIPE;
951: else if (status == HT_ERROR) {
1.139 frystyk 952: http->result = HT_INTERRUPTED;
953: http->state = HTTP_ERROR;
954: break;
955: }
956: }
1.131 frystyk 957: } else {
1.142 frystyk 958: /*
959: ** Check to see if we can start a new request
960: ** pending in the host object.
961: */
1.144 frystyk 962: HTHost_launchPending(host);
1.142 frystyk 963: status = HTRequest_flush(request) ?
1.144 frystyk 964: HTHost_forceFlush(host) : (*input->isa->flush)(input);
1.141 frystyk 965: type = HTEvent_READ;
1.131 frystyk 966: }
967: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 968: }
1.141 frystyk 969: } else if (type == HTEvent_FLUSH) {
970: HTStream * input = HTRequest_inputStream(request);
971: if (input == NULL)
972: return HT_ERROR;
973: return (*input->isa->flush)(input);
974: } else if (type == HTEvent_READ) {
1.144 frystyk 975: status = HTHost_read(host, net);
1.131 frystyk 976: if (status == HT_WOULD_BLOCK)
1.94 frystyk 977: return HT_OK;
1.131 frystyk 978: else if (status == HT_CONTINUE) {
1.130 frystyk 979: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
1.139 frystyk 980: http->lock = NO;
1.141 frystyk 981: type = HTEvent_WRITE;
1.130 frystyk 982: continue;
1.133 frystyk 983: } else if (status==HT_LOADED)
1.141 frystyk 984: http->state = http->next; /* Jump to next state (OK or ERROR) */
985: else if (status==HT_CLOSED)
986: http->state = HTTP_RECOVER_PIPE;
987: else
1.94 frystyk 988: http->state = HTTP_ERROR;
1.90 frystyk 989: } else {
1.141 frystyk 990: http->state = HTTP_ERROR; /* don't know how to handle OOB */
1.90 frystyk 991: }
1.71 frystyk 992: break;
1.141 frystyk 993:
1.134 frystyk 994: case HTTP_OK:
1.88 frystyk 995: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 996: if (HTRequest_isDestination(request)) {
1.126 frystyk 997: HTRequest * source = HTRequest_source(request);
1.91 frystyk 998: HTLink *link =
1.127 frystyk 999: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 1000: (HTAnchor *) anchor);
1.109 frystyk 1001: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 1002: }
1.112 frystyk 1003: }
1.134 frystyk 1004: HTTPCleanup(request, http->result);
1.94 frystyk 1005: return HT_OK;
1.71 frystyk 1006: break;
1.141 frystyk 1007:
1008: case HTTP_RECOVER_PIPE:
1009: {
1010: /*
1011: ** If this is a persistent connection and we get a close
1012: ** then it is an error and we should recover from it by
1013: ** restarting the pipe line of requests if any
1014: */
1015: if (HTHost_isPersistent(host)) {
1.143 frystyk 1016: if (host == NULL) return HT_ERROR;
1.144 frystyk 1017: HTRequest_setFlush(request, YES);
1018: HTHost_recoverPipe(host);
1019: http->state = HTTP_BEGIN;
1020: HTHost_launchPending(host);
1021: return HT_OK;
1.141 frystyk 1022: } else
1023: http->state = HTTP_OK;
1024: }
1.143 frystyk 1025: break;
1.141 frystyk 1026:
1.71 frystyk 1027: case HTTP_ERROR:
1.143 frystyk 1028: if (HTRequest_isPostWeb(request)) {
1029: if (HTRequest_isDestination(request)) {
1030: HTRequest * source = HTRequest_source(request);
1031: HTLink *link =
1032: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1033: (HTAnchor *) anchor);
1034: HTLink_setResult(link, HT_LINK_ERROR);
1035: }
1036: HTRequest_killPostWeb(request);
1037: }
1038: HTTPCleanup(request, http->result);
1039: return HT_OK;
1040: break;
1041:
1.141 frystyk 1042: default:
1043: HTTrace("bad http state %d.\n", http->state);
1044: HTDebugBreak();
1.71 frystyk 1045: }
1046: } /* End of while(1) */
1047: }
1.88 frystyk 1048:
1.21 luotonen 1049:
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