Annotation of libwww/Library/src/HTTP.c, revision 1.139
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.
1.139 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.138 1996/09/10 00:22:02 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:
1.139 ! frystyk 43: #define HTTP_OUTPUT "w3chttp.out"
! 44:
1.59 frystyk 45: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 46:
47: /* Final states have negative value */
1.59 frystyk 48: typedef enum _HTTPState {
1.134 frystyk 49: HTTP_ERROR = -2,
50: HTTP_OK = -1,
1.71 frystyk 51: HTTP_BEGIN = 0,
52: HTTP_NEED_CONNECTION,
1.134 frystyk 53: HTTP_NEED_REQUEST
1.59 frystyk 54: } HTTPState;
1.55 frystyk 55:
1.94 frystyk 56: /* This is the context structure for the this module */
1.55 frystyk 57: typedef struct _http_info {
1.81 frystyk 58: HTTPState state; /* Current State of the connection */
59: HTTPState next; /* Next state */
1.134 frystyk 60: int result; /* Result to report to the after filter */
1.139 ! frystyk 61: BOOL lock; /* Block for writing */
1.55 frystyk 62: } http_info;
63:
1.88 frystyk 64: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 65:
1.71 frystyk 66: struct _HTStream {
1.119 frystyk 67: const HTStreamClass * isa;
1.71 frystyk 68: HTStream * target;
69: HTRequest * request;
70: http_info * http;
1.121 frystyk 71: HTEOLState state;
1.71 frystyk 72: BOOL transparent;
1.81 frystyk 73: char * version; /* Should we save this? */
1.71 frystyk 74: int status;
1.81 frystyk 75: char * reason;
1.71 frystyk 76: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 77: int buflen;
1.71 frystyk 78: };
1.21 luotonen 79:
1.123 frystyk 80: struct _HTInputStream {
81: const HTInputStreamClass * isa;
82: };
83:
1.71 frystyk 84: /* ------------------------------------------------------------------------- */
85: /* Help Functions */
86: /* ------------------------------------------------------------------------- */
1.21 luotonen 87:
1.94 frystyk 88: /* HTTPCleanup
89: ** -----------
1.55 frystyk 90: ** This function closes the connection and frees memory.
1.94 frystyk 91: ** Returns YES on OK, else NO
1.1 timbl 92: */
1.94 frystyk 93: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 94: {
1.126 frystyk 95: HTNet * net = HTRequest_net(req);
96: http_info * http = (http_info *) HTNet_context(net);
97: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 98:
1.94 frystyk 99: /* Free stream with data TO network */
1.112 frystyk 100: if (HTRequest_isDestination(req))
101: HTRequest_removeDestination(req);
1.126 frystyk 102: else if (input) {
1.94 frystyk 103: if (status == HT_INTERRUPTED)
1.126 frystyk 104: (*input->isa->abort)(input, NULL);
1.94 frystyk 105: else
1.126 frystyk 106: (*input->isa->_free)(input);
107: HTRequest_setInputStream(req, NULL);
1.94 frystyk 108: }
1.88 frystyk 109:
1.94 frystyk 110: /* Remove the request object and our own context structure for http */
1.133 frystyk 111: HT_FREE(http);
112: HTNet_setContext(net, NULL);
1.131 frystyk 113: HTNet_delete(net, status);
1.94 frystyk 114: return YES;
1.55 frystyk 115: }
116:
1.71 frystyk 117: /*
1.130 frystyk 118: ** Informational 1xx codes are handled separately
1.136 frystyk 119: ** Returns YES if we should continue, NO if we should stop
1.55 frystyk 120: */
1.130 frystyk 121: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 122: {
1.136 frystyk 123: http_info * http = me->http;
1.71 frystyk 124: switch (me->status) {
125:
1.136 frystyk 126: case 100:
127: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
128: me->reason, (int) strlen(me->reason),
129: "HTTPInformation");
130: return YES;
131: break;
132:
1.130 frystyk 133: case 101:
1.136 frystyk 134: /*
135: ** We consider 101 Switching as a final state and exit this request
136: */
1.130 frystyk 137: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 138: me->reason, (int) strlen(me->reason),
1.130 frystyk 139: "HTTPInformation");
1.136 frystyk 140: http->next = HTTP_OK;
141: http->result = HT_UPGRADE;
1.127 frystyk 142: break;
143:
1.130 frystyk 144: default:
1.136 frystyk 145: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
146: (void *) me->buffer, me->buflen, "HTTPNextState");
147: http->next = HTTP_ERROR;
148: http->result = HT_ERROR;
1.127 frystyk 149: break;
1.130 frystyk 150: }
1.136 frystyk 151: return NO;
1.130 frystyk 152: }
153:
154: /*
155: ** This is a big switch handling all HTTP return codes. It puts in any
156: ** appropiate error message and decides whether we should expect data
157: ** or not.
158: */
159: PRIVATE void HTTPNextState (HTStream * me)
160: {
1.134 frystyk 161: http_info * http = me->http;
1.130 frystyk 162: switch (me->status) {
1.127 frystyk 163:
1.78 frystyk 164: case 0: /* 0.9 response */
1.127 frystyk 165: case 200: /* OK */
166: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
167: me->reason, (int) strlen(me->reason),
168: "HTTPNextState");
1.134 frystyk 169: http->next = HTTP_OK;
170: http->result = HT_LOADED;
1.112 frystyk 171: break;
172:
1.127 frystyk 173: case 201: /* Created */
1.112 frystyk 174: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
175: me->reason, (int) strlen(me->reason),
176: "HTTPNextState");
1.134 frystyk 177: http->next = HTTP_OK;
178: http->result = HT_CREATED;
1.112 frystyk 179: break;
180:
1.127 frystyk 181: case 202: /* Accepted */
1.112 frystyk 182: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
183: me->reason, (int) strlen(me->reason),
184: "HTTPNextState");
1.134 frystyk 185: http->next = HTTP_OK;
186: http->result = HT_ACCEPTED;
1.112 frystyk 187: break;
188:
1.127 frystyk 189: case 203: /* Non-authoritative information */
190: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 191: me->reason, (int) strlen(me->reason),
192: "HTTPNextState");
1.134 frystyk 193: http->next = HTTP_OK;
194: http->result = HT_LOADED;
1.71 frystyk 195: break;
1.78 frystyk 196:
197: case 204: /* No Response */
1.112 frystyk 198: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
199: me->reason, (int) strlen(me->reason),
200: "HTTPNextState");
1.134 frystyk 201: http->next = HTTP_OK;
202: http->result = HT_NO_DATA;
203: break;
204:
205: case 205: /* Reset Content */
206: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
207: me->reason, (int) strlen(me->reason),
208: "HTTPNextState");
209: http->next = HTTP_OK;
210: http->result = HT_RESET_CONTENT;
211: break;
212:
213: case 206: /* Partial Content */
214: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
215: me->reason, (int) strlen(me->reason),
216: "HTTPNextState");
217: http->next = HTTP_OK;
218: http->result = HT_PARTIAL_CONTENT;
219: break;
220:
221: case 300: /* Multiple Choices */
222: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
223: me->reason, (int) strlen(me->reason),
224: "HTTPNextState");
225: http->next = HTTP_OK;
226: http->result = HT_LOADED;
1.71 frystyk 227: break;
1.78 frystyk 228:
1.71 frystyk 229: case 301: /* Moved */
1.112 frystyk 230: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
231: me->reason, (int) strlen(me->reason),
232: "HTTPNextState");
1.134 frystyk 233: http->next = HTTP_ERROR;
234: http->result = HT_PERM_REDIRECT;
1.112 frystyk 235: break;
236:
1.71 frystyk 237: case 302: /* Found */
1.112 frystyk 238: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
239: me->reason, (int) strlen(me->reason),
240: "HTTPNextState");
1.134 frystyk 241: http->next = HTTP_ERROR;
242: http->result = HT_TEMP_REDIRECT;
1.71 frystyk 243: break;
1.55 frystyk 244:
1.71 frystyk 245: case 303: /* Method */
1.107 frystyk 246: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
247: me->reason, (int) strlen(me->reason),
248: "HTTPNextState");
1.134 frystyk 249: http->next = HTTP_ERROR;
250: http->result = HT_SEE_OTHER;
1.71 frystyk 251: break;
1.91 frystyk 252:
253: case 304: /* Not Modified */
1.131 frystyk 254: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 255: me->reason, (int) strlen(me->reason),
256: "HTTPNextState");
1.135 frystyk 257: http->next = HTTP_OK;
1.134 frystyk 258: http->result = HT_NOT_MODIFIED;
259: break;
260:
261: case 305: /* Use proxy */
262: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
263: me->reason, (int) strlen(me->reason),
264: "HTTPNextState");
265: http->next = HTTP_ERROR;
266: http->result = HT_USE_PROXY;
1.91 frystyk 267: break;
1.55 frystyk 268:
1.78 frystyk 269: case 400: /* Bad Request */
1.104 frystyk 270: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 271: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 272: http->next = HTTP_ERROR;
273: http->result = HT_ERROR;
1.71 frystyk 274: break;
1.70 howcome 275:
1.71 frystyk 276: case 401:
1.104 frystyk 277: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 278: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 279: http->next = HTTP_ERROR;
280: http->result = HT_NO_ACCESS;
1.71 frystyk 281: break;
282:
283: case 402: /* Payment required */
1.104 frystyk 284: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 285: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 286: http->next = HTTP_ERROR;
287: http->result = HT_ERROR;
1.71 frystyk 288: break;
1.55 frystyk 289:
1.71 frystyk 290: case 403: /* Forbidden */
1.104 frystyk 291: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 292: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 293: http->next = HTTP_ERROR;
294: http->result = HT_FORBIDDEN;
1.71 frystyk 295: break;
1.55 frystyk 296:
1.71 frystyk 297: case 404: /* Not Found */
1.104 frystyk 298: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 299: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 300: http->next = HTTP_ERROR;
301: http->result = HT_ERROR;
1.71 frystyk 302: break;
303:
1.78 frystyk 304: case 405: /* Not Allowed */
1.104 frystyk 305: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 306: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 307: http->next = HTTP_ERROR;
308: http->result = HT_ERROR;
1.78 frystyk 309: break;
310:
311: case 406: /* None Acceptable */
1.104 frystyk 312: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 313: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 314: http->next = HTTP_ERROR;
315: http->result = HT_NOT_ACCEPTABLE;
1.78 frystyk 316: break;
317:
318: case 407: /* Proxy Authentication Required */
1.127 frystyk 319: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 320: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 321: http->next = HTTP_ERROR;
322: http->result = HT_NO_PROXY_ACCESS;
1.78 frystyk 323: break;
324:
325: case 408: /* Request Timeout */
1.104 frystyk 326: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 327: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 328: http->next = HTTP_ERROR;
329: http->result = HT_ERROR;
330: break;
331:
332: case 409: /* Conflict */
333: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
334: me->reason, (int) strlen(me->reason), "HTTPNextState");
335: http->next = HTTP_ERROR;
336: http->result = HT_CONFLICT;
337: break;
338:
339: case 410: /* Gone */
340: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
341: me->reason, (int) strlen(me->reason), "HTTPNextState");
342: http->next = HTTP_ERROR;
343: http->result = HT_ERROR;
344: break;
345:
346: case 411: /* Length Required */
347: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
348: me->reason, (int) strlen(me->reason), "HTTPNextState");
349: http->next = HTTP_ERROR;
350: http->result = HT_LENGTH_REQUIRED;
351: break;
352:
353: case 412: /* Precondition failed */
354: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
355: me->reason, (int) strlen(me->reason), "HTTPNextState");
356: http->next = HTTP_ERROR;
357: http->result = HT_ERROR;
358: break;
359:
360: case 413: /* Request entity too large */
361: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
362: me->reason, (int) strlen(me->reason), "HTTPNextState");
363: http->next = HTTP_ERROR;
364: http->result = HT_ERROR;
365: break;
366:
367: case 414: /* Request-URI too long */
368: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
369: me->reason, (int) strlen(me->reason), "HTTPNextState");
370: http->next = HTTP_ERROR;
371: http->result = HT_ERROR;
372: break;
373:
374: case 415: /* Unsupported */
375: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
376: me->reason, (int) strlen(me->reason), "HTTPNextState");
377: http->next = HTTP_ERROR;
378: http->result = HT_ERROR;
1.78 frystyk 379: break;
380:
1.71 frystyk 381: case 500:
1.104 frystyk 382: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 383: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 384: http->next = HTTP_ERROR;
385: http->result = HT_ERROR;
1.78 frystyk 386: break;
387:
1.71 frystyk 388: case 501:
1.104 frystyk 389: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 390: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 391: http->next = HTTP_ERROR;
392: http->result = HT_ERROR;
1.78 frystyk 393: break;
394:
395: case 502:
1.104 frystyk 396: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 397: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 398: http->next = HTTP_ERROR;
399: http->result = HT_ERROR;
1.78 frystyk 400: break;
401:
402: case 503:
1.104 frystyk 403: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 404: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 405: http->next = HTTP_ERROR;
1.81 frystyk 406:
407: /* If Retry-After header is found then return HT_RETRY else HT_ERROR */
1.126 frystyk 408: if (HTRequest_retryTime(me->request))
1.134 frystyk 409: http->result = HT_RETRY;
1.81 frystyk 410: else
1.134 frystyk 411: http->result = HT_ERROR;
1.78 frystyk 412: break;
413:
414: case 504:
1.104 frystyk 415: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 416: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 417: http->next = HTTP_ERROR;
418: http->result = HT_ERROR;
419: break;
420:
421: case 505: /* Unsupported protocol version */
422: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
423: me->reason, (int) strlen(me->reason), "HTTPNextState");
424: http->next = HTTP_ERROR;
425: http->result = HT_BAD_VERSION;
1.71 frystyk 426: break;
1.78 frystyk 427:
1.71 frystyk 428: default: /* bad number */
1.104 frystyk 429: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 430: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 frystyk 431: http->next = HTTP_ERROR;
432: http->result = HT_ERROR;
1.71 frystyk 433: break;
1.55 frystyk 434: }
435: }
436:
1.71 frystyk 437: /* ------------------------------------------------------------------------- */
438: /* HTTP Status Line Stream */
439: /* ------------------------------------------------------------------------- */
1.55 frystyk 440:
1.71 frystyk 441: /*
1.80 frystyk 442: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 443: ** then create a MIME-stream, else create a Guess stream to find out
444: ** what the 0.9 server is sending. We need to copy the buffer as we don't
445: ** know if we can modify the contents or not.
1.78 frystyk 446: **
447: ** Stream handling is a function of the status code returned from the
448: ** server:
449: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 450: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 451: **
452: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 453: */
1.100 frystyk 454: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 455: {
1.136 frystyk 456: HTRequest * request = me->request;
457: HTParentAnchor * anchor = HTRequest_anchor(request);
458: HTNet * net = HTRequest_net(request);
1.123 frystyk 459: HTHost * host = HTNet_host(net);
1.80 frystyk 460: if (me->target) {
461: int status = PUTBLOCK(me->buffer, me->buflen);
462: if (status == HT_OK)
463: me->transparent = YES;
464: return status;
1.136 frystyk 465: } else if (HTRequest_isSource(request)&&!HTRequest_outputStream(request)) {
1.88 frystyk 466: /*
467: ** We need to wait for the destinations to get ready
468: */
469: return HT_WOULD_BLOCK;
1.80 frystyk 470: }
1.88 frystyk 471:
1.132 frystyk 472: /*
473: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
474: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
475: */
476: #if 0
1.81 frystyk 477: if (strncasecomp(me->buffer, "http/", 5)) {
1.132 frystyk 478: #else
479: if (strncasecomp(me->buffer, "http", 4)) {
480: #endif
1.80 frystyk 481: int status;
1.136 frystyk 482: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 483: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 484: me->target = HTStreamStack(WWW_UNKNOWN,
485: HTRequest_outputFormat(request),
486: HTRequest_outputStream(request),
487: request, NO);
1.134 frystyk 488: me->http->next = HTTP_OK;
1.80 frystyk 489: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
490: me->transparent = YES;
1.123 frystyk 491: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 492: return status;
493: } else {
1.133 frystyk 494: char *ptr = me->buffer+4; /* Skip the HTTP part */
1.81 frystyk 495: me->version = HTNextField(&ptr);
1.95 frystyk 496:
1.130 frystyk 497: /* Here we want to find out when to use persistent connection */
1.133 frystyk 498: if (!strncasecomp(me->version, "/1.0", 4)) {
1.128 frystyk 499: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
500: HTHost_setVersion(host, HTTP_10);
1.133 frystyk 501: } else if (!strncasecomp(me->version, "/1.", 3)) { /* 1.x family */
1.128 frystyk 502: HTHost_setVersion(host, HTTP_11);
1.133 frystyk 503: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE); /* By default */
504: } else {
505: if (PROT_TRACE)HTTrace("HTTP Status. No 1.x version number - treat it as a HTTP/1.0 server\n");
506: HTHost_setVersion(host, HTTP_10);
1.128 frystyk 507: }
1.95 frystyk 508:
1.81 frystyk 509: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 510: /* Kludge to fix the NCSA server version bug */
511: if (me->status == 0) me->status = atoi(me->version);
512:
1.81 frystyk 513: me->reason = ptr;
514: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
515: *ptr = '\0';
516: else if ((ptr = strchr(me->reason, '\n')) != NULL)
517: *ptr = '\0';
518:
1.130 frystyk 519: /*
520: ** If it is a 1xx code then find out what to do and return until we
521: ** get the next code. In the case of Upgrade we may not get back here
522: ** at all. If we are uploading an entity then continue doing that
523: */
524: if (me->status/100 == 1) {
1.136 frystyk 525: if (HTTPInformation(me) == YES) {
526: me->buflen = 0;
527: me->state = EOL_BEGIN;
528: return HTMethod_hasEntity(HTRequest_method(request)) ?
529: HT_CONTINUE : HT_OK;
1.103 frystyk 530: }
1.56 frystyk 531: }
1.133 frystyk 532:
533: /*
534: ** As we are getting fresh metainformation in the HTTP response,
535: ** we clear the old metainfomation in order not to mix it with the new
536: ** one. This is particularly important for the content-length and the
1.139 ! frystyk 537: ** like. The TRACE and OPTIONS method just adds to the current
! 538: ** metainformation so in that case we don't clear the anchor.
1.133 frystyk 539: */
1.136 frystyk 540: if (me->status==200 || me->status==203 || me->status==300) {
1.139 ! frystyk 541: HTMethod method = HTRequest_method(request);
! 542: if (!HTMethod_addMeta(method)) HTAnchor_clearHeader(anchor);
1.136 frystyk 543: HTAnchor_setCachable(anchor, YES);
544: me->target = HTStreamStack(WWW_MIME,
545: HTRequest_outputFormat(request),
546: HTRequest_outputStream(request),
547: request, NO);
1.139 ! frystyk 548: } else if (me->status==204 || me->status==304) {
1.137 frystyk 549: HTAnchor_setCachable(anchor, YES);
1.136 frystyk 550: me->target = HTStreamStack(WWW_MIME_HEAD,
551: HTRequest_debugFormat(request),
552: HTRequest_debugStream(request),
553: request, NO);
554: } else if (HTRequest_debugStream(request)) {
555: HTAnchor_clearHeader(anchor);
556: me->target = HTStreamStack(WWW_MIME,
557: HTRequest_debugFormat(request),
558: HTRequest_debugStream(request),
559: request, NO);
560: } else {
1.139 ! frystyk 561: /* We still need to parse the MIME part */
1.133 frystyk 562: HTAnchor_clearHeader(anchor);
1.136 frystyk 563: me->target = HTStreamStack(WWW_MIME,
564: HTRequest_debugFormat(request),
565: HTRequest_debugStream(request),
566: request, NO);
1.133 frystyk 567: }
1.56 frystyk 568: }
1.113 frystyk 569: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 570: HTTPNextState(me); /* Get next state */
1.80 frystyk 571: me->transparent = YES;
572: return HT_OK;
1.71 frystyk 573: }
1.56 frystyk 574:
1.80 frystyk 575: /*
576: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
577: ** is found
578: */
1.119 frystyk 579: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 580: {
1.80 frystyk 581: while (!me->transparent && l-- > 0) {
582: int status;
583: if (me->target) {
584: if ((status = stream_pipe(me)) != HT_OK)
585: return status;
586: } else {
587: *(me->buffer+me->buflen++) = *b;
588: if (me->state == EOL_FCR) {
589: if (*b == LF) { /* Line found */
590: if ((status = stream_pipe(me)) != HT_OK)
591: return status;
592: } else {
593: me->state = EOL_BEGIN;
594: }
595: } else if (*b == CR) {
596: me->state = EOL_FCR;
597: } else if (*b == LF) {
598: if ((status = stream_pipe(me)) != HT_OK)
599: return status;
1.71 frystyk 600: } else {
1.80 frystyk 601: if (me->buflen >= MAX_STATUS_LEN) {
602: if ((status = stream_pipe(me)) != HT_OK)
603: return status;
604: }
1.71 frystyk 605: }
1.80 frystyk 606: b++;
1.71 frystyk 607: }
1.56 frystyk 608: }
1.99 frystyk 609: if (l > 0) return PUTBLOCK(b, l);
610: return HT_OK;
1.56 frystyk 611: }
612:
1.119 frystyk 613: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 614: {
1.80 frystyk 615: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 616: }
1.56 frystyk 617:
1.100 frystyk 618: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 619: {
1.80 frystyk 620: return HTTPStatus_put_block(me, &c, 1);
621: }
622:
1.100 frystyk 623: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 624: {
625: return (*me->target->isa->flush)(me->target);
1.71 frystyk 626: }
627:
1.100 frystyk 628: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 629: {
1.87 frystyk 630: int status = HT_OK;
631: if (me->target) {
632: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
633: return HT_WOULD_BLOCK;
634: }
1.115 frystyk 635: HT_FREE(me);
1.100 frystyk 636: return status;
1.71 frystyk 637: }
638:
1.104 frystyk 639: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 640: {
641: if (me->target)
1.74 frystyk 642: ABORT_TARGET;
1.115 frystyk 643: HT_FREE(me);
1.74 frystyk 644: if (PROT_TRACE)
1.116 eric 645: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 646: return HT_ERROR;
1.71 frystyk 647: }
648:
649: /* HTTPStatus Stream
650: ** -----------------
651: */
1.119 frystyk 652: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 653: {
654: "HTTPStatus",
1.80 frystyk 655: HTTPStatus_flush,
1.71 frystyk 656: HTTPStatus_free,
657: HTTPStatus_abort,
658: HTTPStatus_put_character,
659: HTTPStatus_put_string,
660: HTTPStatus_put_block
661: };
662:
1.113 frystyk 663: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
664: void * param,
665: HTFormat input_format,
666: HTFormat output_format,
667: HTStream * output_stream)
1.71 frystyk 668: {
1.115 frystyk 669: HTStream * me;
670: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
671: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 672: me->isa = &HTTPStatusClass;
1.113 frystyk 673: if (request) {
1.126 frystyk 674: HTNet * net = HTRequest_net(request);
1.125 frystyk 675: /* Get existing copy */
676: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 677: me->request = request;
678: me->http = http;
679: http->next = HTTP_ERROR;
680: me->state = EOL_BEGIN;
681: return me;
682: } else
683: return HTErrorStream();
1.71 frystyk 684: }
685:
686: /* ------------------------------------------------------------------------- */
687:
688: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 689: ** ==============================
690: **
691: ** Given a hypertext address, this routine loads a document.
692: **
693: ** On entry,
694: ** request This is the request structure
1.94 frystyk 695: ** returns HT_ERROR Error has occured in call back
696: ** HT_OK Call back was OK
1.55 frystyk 697: */
1.94 frystyk 698: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 699: {
1.71 frystyk 700: int status = HT_ERROR;
1.126 frystyk 701: HTNet * net = HTRequest_net(request); /* Generic protocol information */
1.55 frystyk 702: http_info *http; /* Specific protocol information */
1.112 frystyk 703: HTParentAnchor *anchor = HTRequest_anchor(request);
704:
1.94 frystyk 705: /*
706: ** Initiate a new http structure and bind to request structure
707: ** This is actually state HTTP_BEGIN, but it can't be in the state
708: ** machine as we need the structure first.
709: */
710: if (ops == FD_NONE) {
1.116 eric 711: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
1.112 frystyk 712: HTAnchor_physical(anchor));
1.133 frystyk 713: if (!net->context) {
714: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
715: HT_OUTOFMEM("HTLoadHTTP");
716: HTNet_setContext(net, http);
717: } else {
718: http = (http_info *) HTNet_context(net); /* Get existing copy */
719: }
1.71 frystyk 720: http->state = HTTP_BEGIN;
1.134 frystyk 721: http->next = HTTP_OK;
722: http->result = HT_ERROR;
1.98 frystyk 723: } else if (ops == FD_CLOSE) { /* Interrupted */
1.112 frystyk 724: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
725: NULL, 0, "HTLoadHTTP");
726: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 727: return HT_OK;
728: } else
1.125 frystyk 729: http = (http_info *) HTNet_context(net); /* Get existing copy */
1.71 frystyk 730:
731: /* Now jump into the machine. We know the state from the previous run */
732: while (1) {
733: switch (http->state) {
1.134 frystyk 734: case HTTP_BEGIN:
1.129 frystyk 735: http->state = HTTP_NEED_CONNECTION;
1.71 frystyk 736: break;
737:
1.123 frystyk 738: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
739: status = HTDoConnect(net, HTAnchor_physical(anchor), HTTP_PORT);
1.80 frystyk 740: if (status == HT_OK) {
1.123 frystyk 741: /*
742: ** Check the protocol class to see if we have connected to a
743: ** the right class of server, in this case HTTP.
744: */
745: {
746: HTHost * host = HTNet_host(net);
747: char * s_class = HTHost_class(host);
748: if (s_class && strcasecomp(s_class, "http")) {
749: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
750: NULL, 0, "HTLoadHTTP");
751: http->state = HTTP_ERROR;
752: break;
753: }
754: HTHost_setClass(host, "http");
1.95 frystyk 755: }
1.138 frystyk 756:
757: /*
758: ** For backwards compatibility with servers that understand
759: ** Connection: Keep-Alive, we send it along. However, we do
760: ** NOT send it to a proxy as it may confuse HTTP/1.0 proxies
761: */
762: if (HTRequest_proxy(request) == NULL)
763: HTRequest_addClientConnection(request, "Keep-Alive", "");
1.95 frystyk 764:
1.123 frystyk 765: /*
766: ** Create the stream pipe FROM the channel to the application.
767: ** The target for the input stream pipe is set up using the
768: ** stream stack.
1.113 frystyk 769: */
1.126 frystyk 770: HTNet_getInput(net,
771: HTStreamStack(WWW_HTTP,
772: HTRequest_outputFormat(request),
773: HTRequest_outputStream(request),
774: request, YES), NULL, 0);
1.127 frystyk 775: HTRequest_setOutputConnected(request, YES);
776:
1.123 frystyk 777: /*
778: ** Create the stream pipe TO the channel from the application
779: ** and hook it up to the request object
780: */
781: {
782: HTOutputStream * output = HTNet_getOutput(net, NULL, 0);
1.139 ! frystyk 783: HTStream * app = NULL;
! 784: #ifdef HTTP_DUMP
! 785: if (PROT_TRACE) {
! 786: FILE * fp = NULL;
! 787: if ((fp = fopen(HTTP_OUTPUT, "wb"))) {
! 788: output = HTTee(output,
! 789: HTFWriter_new(request,fp,YES),NULL);
! 790: HTTrace("HTTP........ Dumping request to `%s\'\n",
! 791: HTTP_OUTPUT);
! 792: }
! 793: }
! 794: #endif /* HTTP_DUMP */
! 795: app = HTMethod_hasEntity(HTRequest_method(request)) ?
! 796: HTMIMERequest_new(request,
! 797: HTTPRequest_new(request,(HTStream *)
! 798: output,NO),YES) :
! 799: HTTPRequest_new(request, (HTStream*) output, YES);
1.123 frystyk 800: HTRequest_setInputStream(request, app);
801: }
1.88 frystyk 802:
803: /*
804: ** Set up concurrent read/write if this request isn't the
805: ** source for a PUT or POST. As source we don't start reading
806: ** before all destinations are ready. If destination then
807: ** register the input stream and get ready for read
808: */
1.112 frystyk 809: if (HTRequest_isDestination(request)) {
1.124 eric 810: HTEvent_register(net->sockfd, request, (SockOps) FD_READ,
1.94 frystyk 811: HTLoadHTTP, net->priority);
1.88 frystyk 812: HTRequest_linkDestination(request);
813: }
1.71 frystyk 814: http->state = HTTP_NEED_REQUEST;
1.133 frystyk 815: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.94 frystyk 816: return HT_OK;
1.71 frystyk 817: else
818: http->state = HTTP_ERROR; /* Error or interrupt */
819: break;
820:
1.87 frystyk 821: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 822: case HTTP_NEED_REQUEST:
1.94 frystyk 823: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 824: if (HTRequest_isDestination(request)) {
1.126 frystyk 825: HTRequest * source = HTRequest_source(request);
826: HTNet * srcnet = HTRequest_net(source);
1.112 frystyk 827: if (srcnet) {
1.126 frystyk 828: SOCKET sockfd = HTNet_socket(srcnet);
829: HTEvent_register(sockfd, source,
1.112 frystyk 830: (SockOps) FD_READ,
831: srcnet->cbf, srcnet->priority);
1.126 frystyk 832: HTEvent_unregister(sockfd, FD_WRITE);
1.112 frystyk 833: }
1.94 frystyk 834: return HT_OK;
1.80 frystyk 835: }
1.126 frystyk 836:
837: /*
838: ** Should we use the input stream directly or call the post
839: ** callback function to send data down to the network?
840: */
841: {
842: HTStream * input = HTRequest_inputStream(request);
843: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 844: if (pcbf) {
1.139 ! frystyk 845: if (http->lock)
! 846: return HT_OK;
! 847: else {
! 848: status = pcbf(request, input);
! 849: if (status == HT_PAUSE) {
! 850: ops = FD_READ;
! 851: http->lock = YES;
! 852: } else if (status == HT_LOADED)
! 853: ops = FD_READ;
! 854: else if (status == HT_ERROR) {
! 855: http->result = HT_INTERRUPTED;
! 856: http->state = HTTP_ERROR;
! 857: break;
! 858: }
! 859: }
1.131 frystyk 860: } else {
861: status = (*input->isa->flush)(input);
1.126 frystyk 862: ops = FD_READ; /* Trick to ensure that we do READ */
1.131 frystyk 863: }
864: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 865: }
1.94 frystyk 866: } else if (ops == FD_READ) {
1.123 frystyk 867: status = (*net->input->isa->read)(net->input);
1.131 frystyk 868: if (status == HT_WOULD_BLOCK)
1.94 frystyk 869: return HT_OK;
1.131 frystyk 870: else if (status == HT_CONTINUE) {
1.130 frystyk 871: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
1.139 ! frystyk 872: http->lock = NO;
1.130 frystyk 873: ops = FD_WRITE;
874: continue;
1.133 frystyk 875: } else if (status==HT_LOADED)
1.94 frystyk 876: http->state = http->next; /* Jump to next state */
1.133 frystyk 877: else if (status==HT_CLOSED) {
878: HTHost * host = HTNet_host(net);
879:
880: /*
881: ** If this is a persistent connection and we get a close
882: ** then it is an error and we should recover from it by
883: ** restarting the pipe line of requests if any
884: */
885: if (HTHost_isPersistent(host)) {
1.135 frystyk 886: http->result = HT_RECOVER_PIPE;
1.133 frystyk 887: http->state = HTTP_ERROR;
888: break;
889: } else
1.134 frystyk 890: http->state = HTTP_OK;
1.133 frystyk 891: } else
1.94 frystyk 892: http->state = HTTP_ERROR;
1.90 frystyk 893: } else {
1.78 frystyk 894: http->state = HTTP_ERROR;
1.90 frystyk 895: }
1.71 frystyk 896: break;
1.80 frystyk 897:
1.134 frystyk 898: case HTTP_OK:
1.88 frystyk 899: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 900: if (HTRequest_isDestination(request)) {
1.126 frystyk 901: HTRequest * source = HTRequest_source(request);
1.91 frystyk 902: HTLink *link =
1.127 frystyk 903: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 904: (HTAnchor *) anchor);
1.109 frystyk 905: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 906: }
1.112 frystyk 907: }
1.134 frystyk 908: HTTPCleanup(request, http->result);
1.94 frystyk 909: return HT_OK;
1.71 frystyk 910: break;
1.80 frystyk 911:
1.71 frystyk 912: case HTTP_ERROR:
1.88 frystyk 913: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 914: if (HTRequest_isDestination(request)) {
1.126 frystyk 915: HTRequest * source = HTRequest_source(request);
1.91 frystyk 916: HTLink *link =
1.127 frystyk 917: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 918: (HTAnchor *) anchor);
1.109 frystyk 919: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 920: }
1.112 frystyk 921: HTRequest_killPostWeb(request);
922: }
1.134 frystyk 923: HTTPCleanup(request, http->result);
1.94 frystyk 924: return HT_OK;
1.71 frystyk 925: break;
926: }
927: } /* End of while(1) */
928: }
1.88 frystyk 929:
1.21 luotonen 930:
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