Annotation of libwww/Library/src/HTTP.c, revision 1.138
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.
1.138 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.137 1996年09月09日 20:53:36 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:
1.59 frystyk 43: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 44:
45: /* Final states have negative value */
1.59 frystyk 46: typedef enum _HTTPState {
1.134 frystyk 47: HTTP_ERROR = -2,
48: HTTP_OK = -1,
1.71 frystyk 49: HTTP_BEGIN = 0,
50: HTTP_NEED_CONNECTION,
1.134 frystyk 51: HTTP_NEED_REQUEST
1.59 frystyk 52: } HTTPState;
1.55 frystyk 53:
1.94 frystyk 54: /* This is the context structure for the this module */
1.55 frystyk 55: typedef struct _http_info {
1.81 frystyk 56: HTTPState state; /* Current State of the connection */
57: HTTPState next; /* Next state */
1.134 frystyk 58: int result; /* Result to report to the after filter */
1.55 frystyk 59: } http_info;
60:
1.88 frystyk 61: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 62:
1.71 frystyk 63: struct _HTStream {
1.119 frystyk 64: const HTStreamClass * isa;
1.71 frystyk 65: HTStream * target;
66: HTRequest * request;
67: http_info * http;
1.121 frystyk 68: HTEOLState state;
1.71 frystyk 69: BOOL transparent;
1.81 frystyk 70: char * version; /* Should we save this? */
1.71 frystyk 71: int status;
1.81 frystyk 72: char * reason;
1.71 frystyk 73: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 74: int buflen;
1.71 frystyk 75: };
1.21 luotonen 76:
1.123 frystyk 77: struct _HTInputStream {
78: const HTInputStreamClass * isa;
79: };
80:
1.71 frystyk 81: /* ------------------------------------------------------------------------- */
82: /* Help Functions */
83: /* ------------------------------------------------------------------------- */
1.21 luotonen 84:
1.94 frystyk 85: /* HTTPCleanup
86: ** -----------
1.55 frystyk 87: ** This function closes the connection and frees memory.
1.94 frystyk 88: ** Returns YES on OK, else NO
1.1 timbl 89: */
1.94 frystyk 90: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 91: {
1.126 frystyk 92: HTNet * net = HTRequest_net(req);
93: http_info * http = (http_info *) HTNet_context(net);
94: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 95:
1.94 frystyk 96: /* Free stream with data TO network */
1.112 frystyk 97: if (HTRequest_isDestination(req))
98: HTRequest_removeDestination(req);
1.126 frystyk 99: else if (input) {
1.94 frystyk 100: if (status == HT_INTERRUPTED)
1.126 frystyk 101: (*input->isa->abort)(input, NULL);
1.94 frystyk 102: else
1.126 frystyk 103: (*input->isa->_free)(input);
104: HTRequest_setInputStream(req, NULL);
1.94 frystyk 105: }
1.88 frystyk 106:
1.94 frystyk 107: /* Remove the request object and our own context structure for http */
1.133 frystyk 108: HT_FREE(http);
109: HTNet_setContext(net, NULL);
1.131 frystyk 110: HTNet_delete(net, status);
1.94 frystyk 111: return YES;
1.55 frystyk 112: }
113:
1.71 frystyk 114: /*
1.130 frystyk 115: ** Informational 1xx codes are handled separately
1.136 frystyk 116: ** Returns YES if we should continue, NO if we should stop
1.55 frystyk 117: */
1.130 frystyk 118: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 119: {
1.136 frystyk 120: http_info * http = me->http;
1.71 frystyk 121: switch (me->status) {
122:
1.136 frystyk 123: case 100:
124: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
125: me->reason, (int) strlen(me->reason),
126: "HTTPInformation");
127: return YES;
128: break;
129:
1.130 frystyk 130: case 101:
1.136 frystyk 131: /*
132: ** We consider 101 Switching as a final state and exit this request
133: */
1.130 frystyk 134: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 135: me->reason, (int) strlen(me->reason),
1.130 frystyk 136: "HTTPInformation");
1.136 frystyk 137: http->next = HTTP_OK;
138: http->result = HT_UPGRADE;
1.127 frystyk 139: break;
140:
1.130 frystyk 141: default:
1.136 frystyk 142: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
143: (void *) me->buffer, me->buflen, "HTTPNextState");
144: http->next = HTTP_ERROR;
145: http->result = HT_ERROR;
1.127 frystyk 146: break;
1.130 frystyk 147: }
1.136 frystyk 148: return NO;
1.130 frystyk 149: }
150:
151: /*
152: ** This is a big switch handling all HTTP return codes. It puts in any
153: ** appropiate error message and decides whether we should expect data
154: ** or not.
155: */
156: PRIVATE void HTTPNextState (HTStream * me)
157: {
1.134 frystyk 158: http_info * http = me->http;
1.130 frystyk 159: switch (me->status) {
1.127 frystyk 160:
1.78 frystyk 161: case 0: /* 0.9 response */
1.127 frystyk 162: case 200: /* OK */
163: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
164: me->reason, (int) strlen(me->reason),
165: "HTTPNextState");
1.134 frystyk 166: http->next = HTTP_OK;
167: http->result = HT_LOADED;
1.112 frystyk 168: break;
169:
1.127 frystyk 170: case 201: /* Created */
1.112 frystyk 171: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
172: me->reason, (int) strlen(me->reason),
173: "HTTPNextState");
1.134 frystyk 174: http->next = HTTP_OK;
175: http->result = HT_CREATED;
1.112 frystyk 176: break;
177:
1.127 frystyk 178: case 202: /* Accepted */
1.112 frystyk 179: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
180: me->reason, (int) strlen(me->reason),
181: "HTTPNextState");
1.134 frystyk 182: http->next = HTTP_OK;
183: http->result = HT_ACCEPTED;
1.112 frystyk 184: break;
185:
1.127 frystyk 186: case 203: /* Non-authoritative information */
187: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 188: me->reason, (int) strlen(me->reason),
189: "HTTPNextState");
1.134 frystyk 190: http->next = HTTP_OK;
191: http->result = HT_LOADED;
1.71 frystyk 192: break;
1.78 frystyk 193:
194: case 204: /* No Response */
1.112 frystyk 195: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
196: me->reason, (int) strlen(me->reason),
197: "HTTPNextState");
1.134 frystyk 198: http->next = HTTP_OK;
199: http->result = HT_NO_DATA;
200: break;
201:
202: case 205: /* Reset Content */
203: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
204: me->reason, (int) strlen(me->reason),
205: "HTTPNextState");
206: http->next = HTTP_OK;
207: http->result = HT_RESET_CONTENT;
208: break;
209:
210: case 206: /* Partial Content */
211: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
212: me->reason, (int) strlen(me->reason),
213: "HTTPNextState");
214: http->next = HTTP_OK;
215: http->result = HT_PARTIAL_CONTENT;
216: break;
217:
218: case 300: /* Multiple Choices */
219: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
220: me->reason, (int) strlen(me->reason),
221: "HTTPNextState");
222: http->next = HTTP_OK;
223: http->result = HT_LOADED;
1.71 frystyk 224: break;
1.78 frystyk 225:
1.71 frystyk 226: case 301: /* Moved */
1.112 frystyk 227: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
228: me->reason, (int) strlen(me->reason),
229: "HTTPNextState");
1.134 frystyk 230: http->next = HTTP_ERROR;
231: http->result = HT_PERM_REDIRECT;
1.112 frystyk 232: break;
233:
1.71 frystyk 234: case 302: /* Found */
1.112 frystyk 235: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
236: me->reason, (int) strlen(me->reason),
237: "HTTPNextState");
1.134 frystyk 238: http->next = HTTP_ERROR;
239: http->result = HT_TEMP_REDIRECT;
1.71 frystyk 240: break;
1.55 frystyk 241:
1.71 frystyk 242: case 303: /* Method */
1.107 frystyk 243: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
244: me->reason, (int) strlen(me->reason),
245: "HTTPNextState");
1.134 frystyk 246: http->next = HTTP_ERROR;
247: http->result = HT_SEE_OTHER;
1.71 frystyk 248: break;
1.91 frystyk 249:
250: case 304: /* Not Modified */
1.131 frystyk 251: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 252: me->reason, (int) strlen(me->reason),
253: "HTTPNextState");
1.135 frystyk 254: http->next = HTTP_OK;
1.134 frystyk 255: http->result = HT_NOT_MODIFIED;
256: break;
257:
258: case 305: /* Use proxy */
259: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
260: me->reason, (int) strlen(me->reason),
261: "HTTPNextState");
262: http->next = HTTP_ERROR;
263: http->result = HT_USE_PROXY;
1.91 frystyk 264: break;
1.55 frystyk 265:
1.78 frystyk 266: case 400: /* Bad Request */
1.104 frystyk 267: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 268: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 269: http->next = HTTP_ERROR;
270: http->result = HT_ERROR;
1.71 frystyk 271: break;
1.70 howcome 272:
1.71 frystyk 273: case 401:
1.104 frystyk 274: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 275: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 276: http->next = HTTP_ERROR;
277: http->result = HT_NO_ACCESS;
1.71 frystyk 278: break;
279:
280: case 402: /* Payment required */
1.104 frystyk 281: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 282: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 283: http->next = HTTP_ERROR;
284: http->result = HT_ERROR;
1.71 frystyk 285: break;
1.55 frystyk 286:
1.71 frystyk 287: case 403: /* Forbidden */
1.104 frystyk 288: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 289: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 290: http->next = HTTP_ERROR;
291: http->result = HT_FORBIDDEN;
1.71 frystyk 292: break;
1.55 frystyk 293:
1.71 frystyk 294: case 404: /* Not Found */
1.104 frystyk 295: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 296: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 297: http->next = HTTP_ERROR;
298: http->result = HT_ERROR;
1.71 frystyk 299: break;
300:
1.78 frystyk 301: case 405: /* Not Allowed */
1.104 frystyk 302: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 303: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 304: http->next = HTTP_ERROR;
305: http->result = HT_ERROR;
1.78 frystyk 306: break;
307:
308: case 406: /* None Acceptable */
1.104 frystyk 309: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 310: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 311: http->next = HTTP_ERROR;
312: http->result = HT_NOT_ACCEPTABLE;
1.78 frystyk 313: break;
314:
315: case 407: /* Proxy Authentication Required */
1.127 frystyk 316: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 317: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 318: http->next = HTTP_ERROR;
319: http->result = HT_NO_PROXY_ACCESS;
1.78 frystyk 320: break;
321:
322: case 408: /* Request Timeout */
1.104 frystyk 323: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 324: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 325: http->next = HTTP_ERROR;
326: http->result = HT_ERROR;
327: break;
328:
329: case 409: /* Conflict */
330: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
331: me->reason, (int) strlen(me->reason), "HTTPNextState");
332: http->next = HTTP_ERROR;
333: http->result = HT_CONFLICT;
334: break;
335:
336: case 410: /* Gone */
337: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
338: me->reason, (int) strlen(me->reason), "HTTPNextState");
339: http->next = HTTP_ERROR;
340: http->result = HT_ERROR;
341: break;
342:
343: case 411: /* Length Required */
344: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
345: me->reason, (int) strlen(me->reason), "HTTPNextState");
346: http->next = HTTP_ERROR;
347: http->result = HT_LENGTH_REQUIRED;
348: break;
349:
350: case 412: /* Precondition failed */
351: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
352: me->reason, (int) strlen(me->reason), "HTTPNextState");
353: http->next = HTTP_ERROR;
354: http->result = HT_ERROR;
355: break;
356:
357: case 413: /* Request entity too large */
358: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
359: me->reason, (int) strlen(me->reason), "HTTPNextState");
360: http->next = HTTP_ERROR;
361: http->result = HT_ERROR;
362: break;
363:
364: case 414: /* Request-URI too long */
365: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
366: me->reason, (int) strlen(me->reason), "HTTPNextState");
367: http->next = HTTP_ERROR;
368: http->result = HT_ERROR;
369: break;
370:
371: case 415: /* Unsupported */
372: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
373: me->reason, (int) strlen(me->reason), "HTTPNextState");
374: http->next = HTTP_ERROR;
375: http->result = HT_ERROR;
1.78 frystyk 376: break;
377:
1.71 frystyk 378: case 500:
1.104 frystyk 379: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 380: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 381: http->next = HTTP_ERROR;
382: http->result = HT_ERROR;
1.78 frystyk 383: break;
384:
1.71 frystyk 385: case 501:
1.104 frystyk 386: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 387: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 388: http->next = HTTP_ERROR;
389: http->result = HT_ERROR;
1.78 frystyk 390: break;
391:
392: case 502:
1.104 frystyk 393: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 394: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 395: http->next = HTTP_ERROR;
396: http->result = HT_ERROR;
1.78 frystyk 397: break;
398:
399: case 503:
1.104 frystyk 400: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 401: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 402: http->next = HTTP_ERROR;
1.81 frystyk 403:
404: /* If Retry-After header is found then return HT_RETRY else HT_ERROR */
1.126 frystyk 405: if (HTRequest_retryTime(me->request))
1.134 frystyk 406: http->result = HT_RETRY;
1.81 frystyk 407: else
1.134 frystyk 408: http->result = HT_ERROR;
1.78 frystyk 409: break;
410:
411: case 504:
1.104 frystyk 412: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 413: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 frystyk 414: http->next = HTTP_ERROR;
415: http->result = HT_ERROR;
416: break;
417:
418: case 505: /* Unsupported protocol version */
419: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
420: me->reason, (int) strlen(me->reason), "HTTPNextState");
421: http->next = HTTP_ERROR;
422: http->result = HT_BAD_VERSION;
1.71 frystyk 423: break;
1.78 frystyk 424:
1.71 frystyk 425: default: /* bad number */
1.104 frystyk 426: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 427: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 frystyk 428: http->next = HTTP_ERROR;
429: http->result = HT_ERROR;
1.71 frystyk 430: break;
1.55 frystyk 431: }
432: }
433:
1.71 frystyk 434: /* ------------------------------------------------------------------------- */
435: /* HTTP Status Line Stream */
436: /* ------------------------------------------------------------------------- */
1.55 frystyk 437:
1.71 frystyk 438: /*
1.80 frystyk 439: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 440: ** then create a MIME-stream, else create a Guess stream to find out
441: ** what the 0.9 server is sending. We need to copy the buffer as we don't
442: ** know if we can modify the contents or not.
1.78 frystyk 443: **
444: ** Stream handling is a function of the status code returned from the
445: ** server:
446: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 447: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 448: **
449: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 450: */
1.100 frystyk 451: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 452: {
1.136 frystyk 453: HTRequest * request = me->request;
454: HTParentAnchor * anchor = HTRequest_anchor(request);
455: HTNet * net = HTRequest_net(request);
1.123 frystyk 456: HTHost * host = HTNet_host(net);
1.80 frystyk 457: if (me->target) {
458: int status = PUTBLOCK(me->buffer, me->buflen);
459: if (status == HT_OK)
460: me->transparent = YES;
461: return status;
1.136 frystyk 462: } else if (HTRequest_isSource(request)&&!HTRequest_outputStream(request)) {
1.88 frystyk 463: /*
464: ** We need to wait for the destinations to get ready
465: */
466: return HT_WOULD_BLOCK;
1.80 frystyk 467: }
1.88 frystyk 468:
1.132 frystyk 469: /*
470: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
471: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
472: */
473: #if 0
1.81 frystyk 474: if (strncasecomp(me->buffer, "http/", 5)) {
1.132 frystyk 475: #else
476: if (strncasecomp(me->buffer, "http", 4)) {
477: #endif
1.80 frystyk 478: int status;
1.136 frystyk 479: HTRequest_addError(request, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 480: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.136 frystyk 481: me->target = HTStreamStack(WWW_UNKNOWN,
482: HTRequest_outputFormat(request),
483: HTRequest_outputStream(request),
484: request, NO);
1.134 frystyk 485: me->http->next = HTTP_OK;
1.80 frystyk 486: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
487: me->transparent = YES;
1.123 frystyk 488: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 489: return status;
490: } else {
1.133 frystyk 491: char *ptr = me->buffer+4; /* Skip the HTTP part */
1.81 frystyk 492: me->version = HTNextField(&ptr);
1.95 frystyk 493:
1.130 frystyk 494: /* Here we want to find out when to use persistent connection */
1.133 frystyk 495: if (!strncasecomp(me->version, "/1.0", 4)) {
1.128 frystyk 496: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
497: HTHost_setVersion(host, HTTP_10);
1.133 frystyk 498: } else if (!strncasecomp(me->version, "/1.", 3)) { /* 1.x family */
1.128 frystyk 499: HTHost_setVersion(host, HTTP_11);
1.133 frystyk 500: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE); /* By default */
501: } else {
502: if (PROT_TRACE)HTTrace("HTTP Status. No 1.x version number - treat it as a HTTP/1.0 server\n");
503: HTHost_setVersion(host, HTTP_10);
1.128 frystyk 504: }
1.95 frystyk 505:
1.81 frystyk 506: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 507: /* Kludge to fix the NCSA server version bug */
508: if (me->status == 0) me->status = atoi(me->version);
509:
1.81 frystyk 510: me->reason = ptr;
511: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
512: *ptr = '0円';
513: else if ((ptr = strchr(me->reason, '\n')) != NULL)
514: *ptr = '0円';
515:
1.130 frystyk 516: /*
517: ** If it is a 1xx code then find out what to do and return until we
518: ** get the next code. In the case of Upgrade we may not get back here
519: ** at all. If we are uploading an entity then continue doing that
520: */
521: if (me->status/100 == 1) {
1.136 frystyk 522: if (HTTPInformation(me) == YES) {
523: me->buflen = 0;
524: me->state = EOL_BEGIN;
525: return HTMethod_hasEntity(HTRequest_method(request)) ?
526: HT_CONTINUE : HT_OK;
1.103 frystyk 527: }
1.56 frystyk 528: }
1.133 frystyk 529:
530: /*
531: ** As we are getting fresh metainformation in the HTTP response,
532: ** we clear the old metainfomation in order not to mix it with the new
533: ** one. This is particularly important for the content-length and the
534: ** like.
535: */
1.136 frystyk 536: if (me->status==200 || me->status==203 || me->status==300) {
537: HTAnchor_clearHeader(anchor);
538: HTAnchor_setCachable(anchor, YES);
539: me->target = HTStreamStack(WWW_MIME,
540: HTRequest_outputFormat(request),
541: HTRequest_outputStream(request),
542: request, NO);
543: } else if (me->status==304) {
1.137 frystyk 544: HTAnchor_setCachable(anchor, YES);
1.136 frystyk 545: me->target = HTStreamStack(WWW_MIME_HEAD,
546: HTRequest_debugFormat(request),
547: HTRequest_debugStream(request),
548: request, NO);
549: } else if (HTRequest_debugStream(request)) {
550: HTAnchor_clearHeader(anchor);
551: me->target = HTStreamStack(WWW_MIME,
552: HTRequest_debugFormat(request),
553: HTRequest_debugStream(request),
554: request, NO);
555: } else {
556: /* We still need to parser the MIME part */
1.133 frystyk 557: HTAnchor_clearHeader(anchor);
1.136 frystyk 558: me->target = HTStreamStack(WWW_MIME,
559: HTRequest_debugFormat(request),
560: HTRequest_debugStream(request),
561: request, NO);
1.133 frystyk 562: }
1.56 frystyk 563: }
1.113 frystyk 564: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 565: HTTPNextState(me); /* Get next state */
1.80 frystyk 566: me->transparent = YES;
567: return HT_OK;
1.71 frystyk 568: }
1.56 frystyk 569:
1.80 frystyk 570: /*
571: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
572: ** is found
573: */
1.119 frystyk 574: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 575: {
1.80 frystyk 576: while (!me->transparent && l-- > 0) {
577: int status;
578: if (me->target) {
579: if ((status = stream_pipe(me)) != HT_OK)
580: return status;
581: } else {
582: *(me->buffer+me->buflen++) = *b;
583: if (me->state == EOL_FCR) {
584: if (*b == LF) { /* Line found */
585: if ((status = stream_pipe(me)) != HT_OK)
586: return status;
587: } else {
588: me->state = EOL_BEGIN;
589: }
590: } else if (*b == CR) {
591: me->state = EOL_FCR;
592: } else if (*b == LF) {
593: if ((status = stream_pipe(me)) != HT_OK)
594: return status;
1.71 frystyk 595: } else {
1.80 frystyk 596: if (me->buflen >= MAX_STATUS_LEN) {
597: if ((status = stream_pipe(me)) != HT_OK)
598: return status;
599: }
1.71 frystyk 600: }
1.80 frystyk 601: b++;
1.71 frystyk 602: }
1.56 frystyk 603: }
1.99 frystyk 604: if (l > 0) return PUTBLOCK(b, l);
605: return HT_OK;
1.56 frystyk 606: }
607:
1.119 frystyk 608: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 609: {
1.80 frystyk 610: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 611: }
1.56 frystyk 612:
1.100 frystyk 613: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 614: {
1.80 frystyk 615: return HTTPStatus_put_block(me, &c, 1);
616: }
617:
1.100 frystyk 618: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 619: {
620: return (*me->target->isa->flush)(me->target);
1.71 frystyk 621: }
622:
1.100 frystyk 623: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 624: {
1.87 frystyk 625: int status = HT_OK;
626: if (me->target) {
627: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
628: return HT_WOULD_BLOCK;
629: }
1.115 frystyk 630: HT_FREE(me);
1.100 frystyk 631: return status;
1.71 frystyk 632: }
633:
1.104 frystyk 634: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 635: {
636: if (me->target)
1.74 frystyk 637: ABORT_TARGET;
1.115 frystyk 638: HT_FREE(me);
1.74 frystyk 639: if (PROT_TRACE)
1.116 eric 640: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 641: return HT_ERROR;
1.71 frystyk 642: }
643:
644: /* HTTPStatus Stream
645: ** -----------------
646: */
1.119 frystyk 647: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 648: {
649: "HTTPStatus",
1.80 frystyk 650: HTTPStatus_flush,
1.71 frystyk 651: HTTPStatus_free,
652: HTTPStatus_abort,
653: HTTPStatus_put_character,
654: HTTPStatus_put_string,
655: HTTPStatus_put_block
656: };
657:
1.113 frystyk 658: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
659: void * param,
660: HTFormat input_format,
661: HTFormat output_format,
662: HTStream * output_stream)
1.71 frystyk 663: {
1.115 frystyk 664: HTStream * me;
665: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
666: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 667: me->isa = &HTTPStatusClass;
1.113 frystyk 668: if (request) {
1.126 frystyk 669: HTNet * net = HTRequest_net(request);
1.125 frystyk 670: /* Get existing copy */
671: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 672: me->request = request;
673: me->http = http;
674: http->next = HTTP_ERROR;
675: me->state = EOL_BEGIN;
676: return me;
677: } else
678: return HTErrorStream();
1.71 frystyk 679: }
680:
681: /* ------------------------------------------------------------------------- */
682:
683: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 684: ** ==============================
685: **
686: ** Given a hypertext address, this routine loads a document.
687: **
688: ** On entry,
689: ** request This is the request structure
1.94 frystyk 690: ** returns HT_ERROR Error has occured in call back
691: ** HT_OK Call back was OK
1.55 frystyk 692: */
1.94 frystyk 693: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 694: {
1.71 frystyk 695: int status = HT_ERROR;
1.126 frystyk 696: HTNet * net = HTRequest_net(request); /* Generic protocol information */
1.55 frystyk 697: http_info *http; /* Specific protocol information */
1.112 frystyk 698: HTParentAnchor *anchor = HTRequest_anchor(request);
699:
1.94 frystyk 700: /*
701: ** Initiate a new http structure and bind to request structure
702: ** This is actually state HTTP_BEGIN, but it can't be in the state
703: ** machine as we need the structure first.
704: */
705: if (ops == FD_NONE) {
1.116 eric 706: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
1.112 frystyk 707: HTAnchor_physical(anchor));
1.133 frystyk 708: if (!net->context) {
709: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
710: HT_OUTOFMEM("HTLoadHTTP");
711: HTNet_setContext(net, http);
712: } else {
713: http = (http_info *) HTNet_context(net); /* Get existing copy */
714: }
1.71 frystyk 715: http->state = HTTP_BEGIN;
1.134 frystyk 716: http->next = HTTP_OK;
717: http->result = HT_ERROR;
1.98 frystyk 718: } else if (ops == FD_CLOSE) { /* Interrupted */
1.112 frystyk 719: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
720: NULL, 0, "HTLoadHTTP");
721: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 722: return HT_OK;
723: } else
1.125 frystyk 724: http = (http_info *) HTNet_context(net); /* Get existing copy */
1.71 frystyk 725:
726: /* Now jump into the machine. We know the state from the previous run */
727: while (1) {
728: switch (http->state) {
1.134 frystyk 729: case HTTP_BEGIN:
1.129 frystyk 730: http->state = HTTP_NEED_CONNECTION;
1.71 frystyk 731: break;
732:
1.123 frystyk 733: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
734: status = HTDoConnect(net, HTAnchor_physical(anchor), HTTP_PORT);
1.80 frystyk 735: if (status == HT_OK) {
1.123 frystyk 736: /*
737: ** Check the protocol class to see if we have connected to a
738: ** the right class of server, in this case HTTP.
739: */
740: {
741: HTHost * host = HTNet_host(net);
742: char * s_class = HTHost_class(host);
743: if (s_class && strcasecomp(s_class, "http")) {
744: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
745: NULL, 0, "HTLoadHTTP");
746: http->state = HTTP_ERROR;
747: break;
748: }
749: HTHost_setClass(host, "http");
1.95 frystyk 750: }
1.138 ! frystyk 751:
! 752: /*
! 753: ** For backwards compatibility with servers that understand
! 754: ** Connection: Keep-Alive, we send it along. However, we do
! 755: ** NOT send it to a proxy as it may confuse HTTP/1.0 proxies
! 756: */
! 757: if (HTRequest_proxy(request) == NULL)
! 758: HTRequest_addClientConnection(request, "Keep-Alive", "");
1.95 frystyk 759:
1.123 frystyk 760: /*
761: ** Create the stream pipe FROM the channel to the application.
762: ** The target for the input stream pipe is set up using the
763: ** stream stack.
1.113 frystyk 764: */
1.126 frystyk 765: HTNet_getInput(net,
766: HTStreamStack(WWW_HTTP,
767: HTRequest_outputFormat(request),
768: HTRequest_outputStream(request),
769: request, YES), NULL, 0);
1.127 frystyk 770: HTRequest_setOutputConnected(request, YES);
771:
1.123 frystyk 772: /*
773: ** Create the stream pipe TO the channel from the application
774: ** and hook it up to the request object
775: */
776: {
777: HTOutputStream * output = HTNet_getOutput(net, NULL, 0);
1.126 frystyk 778: HTStream * app =
779: HTMethod_hasEntity(HTRequest_method(request)) ?
1.123 frystyk 780: HTMIMERequest_new(request,
781: HTTPRequest_new(request,(HTStream*) output,NO),YES) :
782: HTTPRequest_new(request, (HTStream*) output, YES);
783: HTRequest_setInputStream(request, app);
784: }
1.88 frystyk 785:
786: /*
787: ** Set up concurrent read/write if this request isn't the
788: ** source for a PUT or POST. As source we don't start reading
789: ** before all destinations are ready. If destination then
790: ** register the input stream and get ready for read
791: */
1.112 frystyk 792: if (HTRequest_isDestination(request)) {
1.124 eric 793: HTEvent_register(net->sockfd, request, (SockOps) FD_READ,
1.94 frystyk 794: HTLoadHTTP, net->priority);
1.88 frystyk 795: HTRequest_linkDestination(request);
796: }
1.71 frystyk 797: http->state = HTTP_NEED_REQUEST;
1.133 frystyk 798: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.94 frystyk 799: return HT_OK;
1.71 frystyk 800: else
801: http->state = HTTP_ERROR; /* Error or interrupt */
802: break;
803:
1.87 frystyk 804: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 805: case HTTP_NEED_REQUEST:
1.94 frystyk 806: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 807: if (HTRequest_isDestination(request)) {
1.126 frystyk 808: HTRequest * source = HTRequest_source(request);
809: HTNet * srcnet = HTRequest_net(source);
1.112 frystyk 810: if (srcnet) {
1.126 frystyk 811: SOCKET sockfd = HTNet_socket(srcnet);
812: HTEvent_register(sockfd, source,
1.112 frystyk 813: (SockOps) FD_READ,
814: srcnet->cbf, srcnet->priority);
1.126 frystyk 815: HTEvent_unregister(sockfd, FD_WRITE);
1.112 frystyk 816: }
1.94 frystyk 817: return HT_OK;
1.80 frystyk 818: }
1.126 frystyk 819:
820: /*
821: ** Should we use the input stream directly or call the post
822: ** callback function to send data down to the network?
823: */
824: {
825: HTStream * input = HTRequest_inputStream(request);
826: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 827: if (pcbf) {
828: status = pcbf(request, input);
829: if (status == HT_PAUSE || status == HT_LOADED)
830: ops = FD_READ;
831: } else {
832: status = (*input->isa->flush)(input);
1.126 frystyk 833: ops = FD_READ; /* Trick to ensure that we do READ */
1.131 frystyk 834: }
835: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 836: }
1.94 frystyk 837: } else if (ops == FD_READ) {
1.123 frystyk 838: status = (*net->input->isa->read)(net->input);
1.131 frystyk 839: if (status == HT_WOULD_BLOCK)
1.94 frystyk 840: return HT_OK;
1.131 frystyk 841: else if (status == HT_CONTINUE) {
1.130 frystyk 842: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
843: ops = FD_WRITE;
844: continue;
1.133 frystyk 845: } else if (status==HT_LOADED)
1.94 frystyk 846: http->state = http->next; /* Jump to next state */
1.133 frystyk 847: else if (status==HT_CLOSED) {
848: HTHost * host = HTNet_host(net);
849:
850: /*
851: ** If this is a persistent connection and we get a close
852: ** then it is an error and we should recover from it by
853: ** restarting the pipe line of requests if any
854: */
855: if (HTHost_isPersistent(host)) {
1.135 frystyk 856: http->result = HT_RECOVER_PIPE;
1.133 frystyk 857: http->state = HTTP_ERROR;
858: break;
859: } else
1.134 frystyk 860: http->state = HTTP_OK;
1.133 frystyk 861: } else
1.94 frystyk 862: http->state = HTTP_ERROR;
1.90 frystyk 863: } else {
1.78 frystyk 864: http->state = HTTP_ERROR;
1.90 frystyk 865: }
1.71 frystyk 866: break;
1.80 frystyk 867:
1.134 frystyk 868: case HTTP_OK:
1.88 frystyk 869: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 870: if (HTRequest_isDestination(request)) {
1.126 frystyk 871: HTRequest * source = HTRequest_source(request);
1.91 frystyk 872: HTLink *link =
1.127 frystyk 873: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 874: (HTAnchor *) anchor);
1.109 frystyk 875: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 876: }
1.112 frystyk 877: }
1.134 frystyk 878: HTTPCleanup(request, http->result);
1.94 frystyk 879: return HT_OK;
1.71 frystyk 880: break;
1.80 frystyk 881:
1.71 frystyk 882: case HTTP_ERROR:
1.88 frystyk 883: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 884: if (HTRequest_isDestination(request)) {
1.126 frystyk 885: HTRequest * source = HTRequest_source(request);
1.91 frystyk 886: HTLink *link =
1.127 frystyk 887: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 888: (HTAnchor *) anchor);
1.109 frystyk 889: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 890: }
1.112 frystyk 891: HTRequest_killPostWeb(request);
892: }
1.134 frystyk 893: HTTPCleanup(request, http->result);
1.94 frystyk 894: return HT_OK;
1.71 frystyk 895: break;
896: }
897: } /* End of while(1) */
898: }
1.88 frystyk 899:
1.21 luotonen 900:
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