Annotation of libwww/Library/src/HTTP.c, revision 1.131
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.
1.131 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.131 1996年07月19日 07:41:58 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 "WWWCache.h"
24: #include "WWWMIME.h"
25: #include "WWWStream.h"
1.125 frystyk 26: #include "WWWTrans.h"
1.94 frystyk 27: #include "HTReqMan.h"
1.95 frystyk 28: #include "HTNetMan.h"
1.109 frystyk 29: #include "HTTPUtil.h"
1.80 frystyk 30: #include "HTTPReq.h"
1.55 frystyk 31: #include "HTTP.h" /* Implements */
32:
33: /* Macros and other defines */
1.94 frystyk 34: #ifndef HTTP_PORT
35: #define HTTP_PORT 80 /* Allocated to http by Jon Postel/ISI 24-Jan-92 */
36: #endif
37:
1.71 frystyk 38: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
39: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
40: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
41: #define FREE_TARGET (*me->target->isa->_free)(me->target)
1.74 frystyk 42: #define ABORT_TARGET (*me->target->isa->abort)(me->target, e)
1.2 timbl 43:
1.59 frystyk 44: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 45:
46: /* Final states have negative value */
1.59 frystyk 47: typedef enum _HTTPState {
1.81 frystyk 48: HTTP_RETRY = -4,
1.71 frystyk 49: HTTP_ERROR = -3,
50: HTTP_NO_DATA = -2,
51: HTTP_GOT_DATA = -1,
52: HTTP_BEGIN = 0,
53: HTTP_NEED_CONNECTION,
54: HTTP_NEED_REQUEST,
1.112 frystyk 55: HTTP_PERM_REDIRECT,
56: HTTP_TEMP_REDIRECT,
1.91 frystyk 57: HTTP_NOT_MODIFIED,
1.131 ! frystyk 58: HTTP_AA,
! 59: HTTP_PROXY_AA
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 */
1.55 frystyk 66: } http_info;
67:
1.88 frystyk 68: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 69:
1.71 frystyk 70: struct _HTStream {
1.119 frystyk 71: const HTStreamClass * isa;
1.71 frystyk 72: HTStream * target;
73: HTRequest * request;
74: http_info * http;
1.121 frystyk 75: HTEOLState state;
1.71 frystyk 76: BOOL transparent;
1.81 frystyk 77: char * version; /* Should we save this? */
1.71 frystyk 78: int status;
1.81 frystyk 79: char * reason;
1.71 frystyk 80: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 81: int buflen;
1.71 frystyk 82: };
1.21 luotonen 83:
1.123 frystyk 84: struct _HTInputStream {
85: const HTInputStreamClass * isa;
86: };
87:
1.71 frystyk 88: /* ------------------------------------------------------------------------- */
89: /* Help Functions */
90: /* ------------------------------------------------------------------------- */
1.21 luotonen 91:
1.94 frystyk 92: /* HTTPCleanup
93: ** -----------
1.55 frystyk 94: ** This function closes the connection and frees memory.
1.94 frystyk 95: ** Returns YES on OK, else NO
1.1 timbl 96: */
1.94 frystyk 97: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 98: {
1.126 frystyk 99: HTNet * net = HTRequest_net(req);
100: http_info * http = (http_info *) HTNet_context(net);
101: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 102:
1.94 frystyk 103: /* Free stream with data TO network */
1.112 frystyk 104: if (HTRequest_isDestination(req))
105: HTRequest_removeDestination(req);
1.126 frystyk 106: else if (input) {
1.94 frystyk 107: if (status == HT_INTERRUPTED)
1.126 frystyk 108: (*input->isa->abort)(input, NULL);
1.94 frystyk 109: else
1.126 frystyk 110: (*input->isa->_free)(input);
111: HTRequest_setInputStream(req, NULL);
1.94 frystyk 112: }
1.88 frystyk 113:
1.94 frystyk 114: /* Remove the request object and our own context structure for http */
1.131 ! frystyk 115: HTNet_delete(net, status);
1.115 frystyk 116: HT_FREE(http);
1.94 frystyk 117: return YES;
1.55 frystyk 118: }
119:
1.71 frystyk 120: /*
1.130 frystyk 121: ** Informational 1xx codes are handled separately
122: ** Returns YES if we should stop, NO if we should continue
1.55 frystyk 123: */
1.130 frystyk 124: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 125: {
1.130 frystyk 126: BOOL result = NO;
1.71 frystyk 127: switch (me->status) {
128:
1.130 frystyk 129: case 101:
130: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 131: me->reason, (int) strlen(me->reason),
1.130 frystyk 132: "HTTPInformation");
133:
134: /* Here we should swap to new protocol */
135:
136: result = YES;
1.127 frystyk 137: break;
138:
1.130 frystyk 139: default:
140: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
1.127 frystyk 141: me->reason, (int) strlen(me->reason),
1.130 frystyk 142: "HTTPInformation");
1.127 frystyk 143: break;
1.130 frystyk 144: }
145: return result;
146: }
147:
148: /*
149: ** This is a big switch handling all HTTP return codes. It puts in any
150: ** appropiate error message and decides whether we should expect data
151: ** or not.
152: */
153: PRIVATE void HTTPNextState (HTStream * me)
154: {
155: switch (me->status) {
1.127 frystyk 156:
1.78 frystyk 157: case 0: /* 0.9 response */
1.127 frystyk 158: case 200: /* OK */
159: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
160: me->reason, (int) strlen(me->reason),
161: "HTTPNextState");
1.112 frystyk 162: me->http->next = HTTP_GOT_DATA;
163: break;
164:
1.127 frystyk 165: case 201: /* Created */
1.112 frystyk 166: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
167: me->reason, (int) strlen(me->reason),
168: "HTTPNextState");
169: me->http->next = HTTP_GOT_DATA;
170: break;
171:
1.127 frystyk 172: case 202: /* Accepted */
1.112 frystyk 173: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
174: me->reason, (int) strlen(me->reason),
175: "HTTPNextState");
176: me->http->next = HTTP_GOT_DATA;
177: break;
178:
1.127 frystyk 179: case 203: /* Non-authoritative information */
180: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 181: me->reason, (int) strlen(me->reason),
182: "HTTPNextState");
1.81 frystyk 183: me->http->next = HTTP_GOT_DATA;
1.71 frystyk 184: break;
1.78 frystyk 185:
186: case 204: /* No Response */
1.112 frystyk 187: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
188: me->reason, (int) strlen(me->reason),
189: "HTTPNextState");
1.81 frystyk 190: me->http->next = HTTP_NO_DATA;
1.71 frystyk 191: break;
1.78 frystyk 192:
1.71 frystyk 193: case 301: /* Moved */
1.112 frystyk 194: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
195: me->reason, (int) strlen(me->reason),
196: "HTTPNextState");
197: me->http->next = HTTP_PERM_REDIRECT;
198: break;
199:
1.71 frystyk 200: case 302: /* Found */
1.112 frystyk 201: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
202: me->reason, (int) strlen(me->reason),
203: "HTTPNextState");
204: me->http->next = HTTP_TEMP_REDIRECT;
1.71 frystyk 205: break;
1.55 frystyk 206:
1.71 frystyk 207: case 303: /* Method */
1.107 frystyk 208: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
209: me->reason, (int) strlen(me->reason),
210: "HTTPNextState");
1.81 frystyk 211: me->http->next = HTTP_ERROR;
1.71 frystyk 212: break;
1.91 frystyk 213:
214: case 304: /* Not Modified */
1.131 ! frystyk 215: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 216: me->reason, (int) strlen(me->reason),
217: "HTTPNextState");
1.91 frystyk 218: me->http->next = HTTP_NOT_MODIFIED;
219: break;
1.55 frystyk 220:
1.78 frystyk 221: case 400: /* Bad Request */
1.104 frystyk 222: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 223: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 224: me->http->next = HTTP_ERROR;
1.71 frystyk 225: break;
1.70 howcome 226:
1.71 frystyk 227: case 401:
1.104 frystyk 228: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 229: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 230: me->http->next = HTTP_AA;
1.71 frystyk 231: break;
232:
233: case 402: /* Payment required */
1.104 frystyk 234: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 235: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 236: me->http->next = HTTP_ERROR;
1.71 frystyk 237: break;
1.55 frystyk 238:
1.71 frystyk 239: case 403: /* Forbidden */
1.104 frystyk 240: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 241: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 242: me->http->next = HTTP_ERROR;
1.71 frystyk 243: break;
1.55 frystyk 244:
1.71 frystyk 245: case 404: /* Not Found */
1.104 frystyk 246: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 247: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 248: me->http->next = HTTP_ERROR;
1.71 frystyk 249: break;
250:
1.78 frystyk 251: case 405: /* Not Allowed */
1.104 frystyk 252: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 253: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 254: me->http->next = HTTP_ERROR;
1.78 frystyk 255: break;
256:
257: case 406: /* None Acceptable */
1.104 frystyk 258: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 259: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 260: me->http->next = HTTP_ERROR;
1.78 frystyk 261: break;
262:
263: case 407: /* Proxy Authentication Required */
1.127 frystyk 264: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 265: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.131 ! frystyk 266: me->http->next = HTTP_PROXY_AA;
1.78 frystyk 267: break;
268:
269: case 408: /* Request Timeout */
1.104 frystyk 270: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 271: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 272: me->http->next = HTTP_ERROR;
1.78 frystyk 273: break;
274:
1.71 frystyk 275: case 500:
1.104 frystyk 276: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 277: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 278: me->http->next = HTTP_ERROR;
1.78 frystyk 279: break;
280:
1.71 frystyk 281: case 501:
1.104 frystyk 282: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 283: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 284: me->http->next = HTTP_ERROR;
1.78 frystyk 285: break;
286:
287: case 502:
1.104 frystyk 288: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 289: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 290: me->http->next = HTTP_ERROR;
1.78 frystyk 291: break;
292:
293: case 503:
1.104 frystyk 294: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 295: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 296:
297: /* If Retry-After header is found then return HT_RETRY else HT_ERROR */
1.126 frystyk 298: if (HTRequest_retryTime(me->request))
1.81 frystyk 299: me->http->next = HTTP_RETRY;
300: else
301: me->http->next = HTTP_ERROR;
1.78 frystyk 302: break;
303:
304: case 504:
1.104 frystyk 305: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 306: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 307: me->http->next = HTTP_ERROR;
1.71 frystyk 308: break;
1.78 frystyk 309:
1.71 frystyk 310: default: /* bad number */
1.104 frystyk 311: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 312: (void *) me->buffer, me->buflen, "HTTPNextState");
1.81 frystyk 313: me->http->next = HTTP_ERROR;
1.71 frystyk 314: break;
1.55 frystyk 315: }
316: }
317:
1.71 frystyk 318: /* ------------------------------------------------------------------------- */
319: /* HTTP Status Line Stream */
320: /* ------------------------------------------------------------------------- */
1.55 frystyk 321:
1.71 frystyk 322: /*
1.80 frystyk 323: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 324: ** then create a MIME-stream, else create a Guess stream to find out
325: ** what the 0.9 server is sending. We need to copy the buffer as we don't
326: ** know if we can modify the contents or not.
1.78 frystyk 327: **
328: ** Stream handling is a function of the status code returned from the
329: ** server:
330: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 331: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 332: **
333: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 334: */
1.100 frystyk 335: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 336: {
1.123 frystyk 337: HTRequest * req = me->request;
338: HTNet * net = req->net;
339: HTHost * host = HTNet_host(net);
1.80 frystyk 340: if (me->target) {
341: int status = PUTBLOCK(me->buffer, me->buflen);
342: if (status == HT_OK)
343: me->transparent = YES;
344: return status;
1.88 frystyk 345: } else if (HTRequest_isSource(req) && !req->output_stream) {
346: /*
347: ** We need to wait for the destinations to get ready
348: */
349: return HT_WOULD_BLOCK;
1.80 frystyk 350: }
1.88 frystyk 351:
1.81 frystyk 352: if (strncasecomp(me->buffer, "http/", 5)) {
1.80 frystyk 353: int status;
1.104 frystyk 354: HTRequest_addError(req, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 355: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.105 frystyk 356: me->target = HTStreamStack(WWW_UNKNOWN, req->output_format,
357: req->output_stream, req, NO);
1.88 frystyk 358: me->http->next = HTTP_GOT_DATA;
1.80 frystyk 359: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
360: me->transparent = YES;
1.123 frystyk 361: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 362: return status;
363: } else {
1.81 frystyk 364: char *ptr = me->buffer+5; /* Skip the HTTP part */
365: me->version = HTNextField(&ptr);
1.95 frystyk 366:
1.130 frystyk 367: /* Here we want to find out when to use persistent connection */
1.128 frystyk 368: if (!strncasecomp(me->version, "1.0", 3)) {
369: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
370: HTHost_setVersion(host, HTTP_10);
371: } else {
372: HTHost_setVersion(host, HTTP_11);
373: HTNet_setPersistent(net, YES); /* By default */
374: }
1.95 frystyk 375:
1.81 frystyk 376: me->status = atoi(HTNextField(&ptr));
377: me->reason = ptr;
378: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
379: *ptr = '0円';
380: else if ((ptr = strchr(me->reason, '\n')) != NULL)
381: *ptr = '0円';
382:
1.130 frystyk 383: /*
384: ** If it is a 1xx code then find out what to do and return until we
385: ** get the next code. In the case of Upgrade we may not get back here
386: ** at all. If we are uploading an entity then continue doing that
387: */
388: if (me->status/100 == 1) {
389: if (HTTPInformation(me)) me->transparent = YES;
390: me->buflen = 0;
391: me->state = EOL_BEGIN;
392: return HTMethod_hasEntity(HTRequest_method(req)) ?
393: HT_CONTINUE : HT_OK;
394: }
395:
1.81 frystyk 396: /* Set up the streams */
1.112 frystyk 397: if (me->status==200) {
1.80 frystyk 398: HTStream *s;
1.103 frystyk 399: me->target = HTStreamStack(WWW_MIME, req->output_format,
400: req->output_stream, req, NO);
1.80 frystyk 401:
1.103 frystyk 402: /* howcome: test for return value from HTCacheWriter 12/1/95 */
403: if (req->method==METHOD_GET && HTCache_isEnabled() &&
404: (s = HTCacheWriter(req, NULL, WWW_MIME, req->output_format,
405: req->output_stream))) {
1.113 frystyk 406: me->target = HTTee(me->target, s, NULL);
1.103 frystyk 407: }
1.94 frystyk 408: } else if (req->debug_stream) {
409: me->target = HTStreamStack(WWW_MIME, req->debug_format,
410: req->debug_stream, req, NO);
1.71 frystyk 411: } else {
1.103 frystyk 412: /* We still need to parser the MIME part */
1.114 frystyk 413: me->target = HTStreamStack(WWW_MIME, req->debug_format,
414: req->debug_stream, req, NO);
1.56 frystyk 415: }
416: }
1.113 frystyk 417: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 418: HTTPNextState(me); /* Get next state */
1.80 frystyk 419: me->transparent = YES;
420: return HT_OK;
1.71 frystyk 421: }
1.56 frystyk 422:
1.80 frystyk 423: /*
424: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
425: ** is found
426: */
1.119 frystyk 427: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 428: {
1.80 frystyk 429: while (!me->transparent && l-- > 0) {
430: int status;
431: if (me->target) {
432: if ((status = stream_pipe(me)) != HT_OK)
433: return status;
434: } else {
435: *(me->buffer+me->buflen++) = *b;
436: if (me->state == EOL_FCR) {
437: if (*b == LF) { /* Line found */
438: if ((status = stream_pipe(me)) != HT_OK)
439: return status;
440: } else {
441: me->state = EOL_BEGIN;
442: }
443: } else if (*b == CR) {
444: me->state = EOL_FCR;
445: } else if (*b == LF) {
446: if ((status = stream_pipe(me)) != HT_OK)
447: return status;
1.71 frystyk 448: } else {
1.80 frystyk 449: if (me->buflen >= MAX_STATUS_LEN) {
450: if ((status = stream_pipe(me)) != HT_OK)
451: return status;
452: }
1.71 frystyk 453: }
1.80 frystyk 454: b++;
1.71 frystyk 455: }
1.56 frystyk 456: }
1.99 frystyk 457: if (l > 0) return PUTBLOCK(b, l);
458: return HT_OK;
1.56 frystyk 459: }
460:
1.119 frystyk 461: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 462: {
1.80 frystyk 463: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 464: }
1.56 frystyk 465:
1.100 frystyk 466: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 467: {
1.80 frystyk 468: return HTTPStatus_put_block(me, &c, 1);
469: }
470:
1.100 frystyk 471: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 472: {
473: return (*me->target->isa->flush)(me->target);
1.71 frystyk 474: }
475:
1.100 frystyk 476: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 477: {
1.87 frystyk 478: int status = HT_OK;
479: if (me->target) {
480: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
481: return HT_WOULD_BLOCK;
482: }
1.115 frystyk 483: HT_FREE(me);
1.100 frystyk 484: return status;
1.71 frystyk 485: }
486:
1.104 frystyk 487: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 488: {
489: if (me->target)
1.74 frystyk 490: ABORT_TARGET;
1.115 frystyk 491: HT_FREE(me);
1.74 frystyk 492: if (PROT_TRACE)
1.116 eric 493: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 494: return HT_ERROR;
1.71 frystyk 495: }
496:
497: /* HTTPStatus Stream
498: ** -----------------
499: */
1.119 frystyk 500: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 501: {
502: "HTTPStatus",
1.80 frystyk 503: HTTPStatus_flush,
1.71 frystyk 504: HTTPStatus_free,
505: HTTPStatus_abort,
506: HTTPStatus_put_character,
507: HTTPStatus_put_string,
508: HTTPStatus_put_block
509: };
510:
1.113 frystyk 511: #if 0
1.100 frystyk 512: PRIVATE HTStream * HTTPStatus_new (HTRequest * request, http_info * http)
1.113 frystyk 513: #endif
514:
515: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
516: void * param,
517: HTFormat input_format,
518: HTFormat output_format,
519: HTStream * output_stream)
1.71 frystyk 520: {
1.115 frystyk 521: HTStream * me;
522: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
523: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 524: me->isa = &HTTPStatusClass;
1.113 frystyk 525: if (request) {
1.126 frystyk 526: HTNet * net = HTRequest_net(request);
1.125 frystyk 527: /* Get existing copy */
528: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 529: me->request = request;
530: me->http = http;
531: http->next = HTTP_ERROR;
532: me->state = EOL_BEGIN;
533: return me;
534: } else
535: return HTErrorStream();
1.71 frystyk 536: }
537:
538: /* ------------------------------------------------------------------------- */
539:
540: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 541: ** ==============================
542: **
543: ** Given a hypertext address, this routine loads a document.
544: **
545: ** On entry,
546: ** request This is the request structure
1.94 frystyk 547: ** returns HT_ERROR Error has occured in call back
548: ** HT_OK Call back was OK
1.55 frystyk 549: */
1.94 frystyk 550: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 551: {
1.71 frystyk 552: int status = HT_ERROR;
1.126 frystyk 553: HTNet * net = HTRequest_net(request); /* Generic protocol information */
1.55 frystyk 554: http_info *http; /* Specific protocol information */
1.112 frystyk 555: HTParentAnchor *anchor = HTRequest_anchor(request);
556:
1.94 frystyk 557: /*
558: ** Initiate a new http structure and bind to request structure
559: ** This is actually state HTTP_BEGIN, but it can't be in the state
560: ** machine as we need the structure first.
561: */
562: if (ops == FD_NONE) {
1.116 eric 563: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
1.112 frystyk 564: HTAnchor_physical(anchor));
1.115 frystyk 565: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
566: HT_OUTOFMEM("HTLoadHTTP");
1.71 frystyk 567: http->state = HTTP_BEGIN;
1.113 frystyk 568: http->next = HTTP_GOT_DATA;
1.125 frystyk 569: HTNet_setContext(net, http);
1.98 frystyk 570: } else if (ops == FD_CLOSE) { /* Interrupted */
1.112 frystyk 571: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
572: NULL, 0, "HTLoadHTTP");
573: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 574: return HT_OK;
575: } else
1.125 frystyk 576: http = (http_info *) HTNet_context(net); /* Get existing copy */
1.71 frystyk 577:
578: /* Now jump into the machine. We know the state from the previous run */
579: while (1) {
580: switch (http->state) {
581: case HTTP_BEGIN:
1.129 frystyk 582: #if 0
1.71 frystyk 583: /*
584: ** Compose authorization information (this was moved here
585: ** from after the making of the connection so that the connection
586: ** wouldn't have to wait while prompting username and password
587: ** from the user). -- AL 13.10.93
588: */
1.117 frystyk 589: if (HTAuth_generate(request)) {
590: if (PROT_TRACE)HTTrace("HTTP........ Credentials generated\n");
591: http->state = HTTP_NEED_CONNECTION;
592: } else {
593: HTRequest_addError(request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
594: NULL, 0, "HTLoadHTTP");
595: http->state = HTTP_ERROR;
1.71 frystyk 596: }
1.129 frystyk 597: #else
598: http->state = HTTP_NEED_CONNECTION;
599: #endif
1.71 frystyk 600: break;
601:
1.123 frystyk 602: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
603: status = HTDoConnect(net, HTAnchor_physical(anchor), HTTP_PORT);
1.80 frystyk 604: if (status == HT_OK) {
1.123 frystyk 605: /*
606: ** Check the protocol class to see if we have connected to a
607: ** the right class of server, in this case HTTP.
608: */
609: {
610: HTHost * host = HTNet_host(net);
611: char * s_class = HTHost_class(host);
612: if (s_class && strcasecomp(s_class, "http")) {
613: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
614: NULL, 0, "HTLoadHTTP");
615: http->state = HTTP_ERROR;
616: break;
617: }
618: HTHost_setClass(host, "http");
1.95 frystyk 619: }
620:
1.123 frystyk 621: /*
622: ** Create the stream pipe FROM the channel to the application.
623: ** The target for the input stream pipe is set up using the
624: ** stream stack.
1.113 frystyk 625: */
1.126 frystyk 626: HTNet_getInput(net,
627: HTStreamStack(WWW_HTTP,
628: HTRequest_outputFormat(request),
629: HTRequest_outputStream(request),
630: request, YES), NULL, 0);
1.127 frystyk 631: HTRequest_setOutputConnected(request, YES);
632:
1.123 frystyk 633: /*
634: ** Create the stream pipe TO the channel from the application
635: ** and hook it up to the request object
636: */
637: {
638: HTOutputStream * output = HTNet_getOutput(net, NULL, 0);
1.126 frystyk 639: HTStream * app =
640: HTMethod_hasEntity(HTRequest_method(request)) ?
1.123 frystyk 641: HTMIMERequest_new(request,
642: HTTPRequest_new(request,(HTStream*) output,NO),YES) :
643: HTTPRequest_new(request, (HTStream*) output, YES);
644: HTRequest_setInputStream(request, app);
645: }
1.88 frystyk 646:
647: /*
648: ** Set up concurrent read/write if this request isn't the
649: ** source for a PUT or POST. As source we don't start reading
650: ** before all destinations are ready. If destination then
651: ** register the input stream and get ready for read
652: */
1.112 frystyk 653: if (HTRequest_isDestination(request)) {
1.124 eric 654: HTEvent_register(net->sockfd, request, (SockOps) FD_READ,
1.94 frystyk 655: HTLoadHTTP, net->priority);
1.88 frystyk 656: HTRequest_linkDestination(request);
657: }
1.71 frystyk 658: http->state = HTTP_NEED_REQUEST;
1.96 frystyk 659: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
1.94 frystyk 660: return HT_OK;
1.71 frystyk 661: else
662: http->state = HTTP_ERROR; /* Error or interrupt */
663: break;
664:
1.87 frystyk 665: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 666: case HTTP_NEED_REQUEST:
1.94 frystyk 667: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 668: if (HTRequest_isDestination(request)) {
1.126 frystyk 669: HTRequest * source = HTRequest_source(request);
670: HTNet * srcnet = HTRequest_net(source);
1.112 frystyk 671: if (srcnet) {
1.126 frystyk 672: SOCKET sockfd = HTNet_socket(srcnet);
673: HTEvent_register(sockfd, source,
1.112 frystyk 674: (SockOps) FD_READ,
675: srcnet->cbf, srcnet->priority);
1.126 frystyk 676: HTEvent_unregister(sockfd, FD_WRITE);
1.112 frystyk 677: }
1.94 frystyk 678: return HT_OK;
1.80 frystyk 679: }
1.126 frystyk 680:
681: /*
682: ** Should we use the input stream directly or call the post
683: ** callback function to send data down to the network?
684: */
685: {
686: HTStream * input = HTRequest_inputStream(request);
687: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 ! frystyk 688: if (pcbf) {
! 689: status = pcbf(request, input);
! 690: if (status == HT_PAUSE || status == HT_LOADED)
! 691: ops = FD_READ;
! 692: } else {
! 693: status = (*input->isa->flush)(input);
1.126 frystyk 694: ops = FD_READ; /* Trick to ensure that we do READ */
1.131 ! frystyk 695: }
! 696: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 697: }
1.94 frystyk 698: } else if (ops == FD_READ) {
1.123 frystyk 699: status = (*net->input->isa->read)(net->input);
1.131 ! frystyk 700: if (status == HT_WOULD_BLOCK)
1.94 frystyk 701: return HT_OK;
1.131 ! frystyk 702: else if (status == HT_CONTINUE) {
1.130 frystyk 703: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
704: ops = FD_WRITE;
705: continue;
706: } else if (status==HT_LOADED || status==HT_CLOSED)
1.94 frystyk 707: http->state = http->next; /* Jump to next state */
708: else
709: http->state = HTTP_ERROR;
1.90 frystyk 710: } else {
1.78 frystyk 711: http->state = HTTP_ERROR;
1.90 frystyk 712: }
1.71 frystyk 713: break;
1.80 frystyk 714:
1.91 frystyk 715: case HTTP_NOT_MODIFIED:
716: http->state = HTTP_ERROR;
717: break;
718:
1.112 frystyk 719: case HTTP_PERM_REDIRECT:
720: if (HTRequest_isPostWeb(request)) {
721: if (HTRequest_isDestination(request)) {
1.126 frystyk 722: HTRequest * source = HTRequest_source(request);
723: HTLink * link =
1.127 frystyk 724: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 725: (HTAnchor *) anchor);
726: HTLink_setResult(link, HT_LINK_ERROR);
727: }
1.88 frystyk 728: HTRequest_killPostWeb(request);
1.112 frystyk 729: }
730: HTTPCleanup(request, HT_PERM_REDIRECT);
731: return HT_OK;
732: break;
733:
1.88 frystyk 734:
1.112 frystyk 735: case HTTP_TEMP_REDIRECT:
736: if (HTRequest_isPostWeb(request)) {
737: if (HTRequest_isDestination(request)) {
1.126 frystyk 738: HTRequest * source = HTRequest_source(request);
1.112 frystyk 739: HTLink *link =
1.127 frystyk 740: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 741: (HTAnchor *) anchor);
742: HTLink_setResult(link, HT_LINK_ERROR);
1.58 frystyk 743: }
1.112 frystyk 744: HTRequest_killPostWeb(request);
1.71 frystyk 745: }
1.112 frystyk 746: HTTPCleanup(request, HT_TEMP_REDIRECT);
747: return HT_OK;
1.71 frystyk 748: break;
1.112 frystyk 749:
1.71 frystyk 750: case HTTP_AA:
1.112 frystyk 751: if (HTRequest_isPostWeb(request)) {
752: if (HTRequest_isDestination(request)) {
1.126 frystyk 753: HTRequest * source = HTRequest_source(request);
1.112 frystyk 754: HTLink *link =
1.127 frystyk 755: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 756: (HTAnchor *) anchor);
757: HTLink_setResult(link, HT_LINK_ERROR);
758: }
1.88 frystyk 759: HTRequest_killPostWeb(request);
1.71 frystyk 760: }
1.112 frystyk 761: HTTPCleanup(request, HT_NO_ACCESS);
1.131 ! frystyk 762: return HT_OK;
! 763: break;
! 764:
! 765: case HTTP_PROXY_AA:
! 766: if (HTRequest_isPostWeb(request)) {
! 767: if (HTRequest_isDestination(request)) {
! 768: HTRequest * source = HTRequest_source(request);
! 769: HTLink *link =
! 770: HTLink_find((HTAnchor *)HTRequest_anchor(source),
! 771: (HTAnchor *) anchor);
! 772: HTLink_setResult(link, HT_LINK_ERROR);
! 773: }
! 774: HTRequest_killPostWeb(request);
! 775: }
! 776: HTTPCleanup(request, HT_NO_PROXY_ACCESS);
1.112 frystyk 777: return HT_OK;
1.71 frystyk 778: break;
1.112 frystyk 779:
1.71 frystyk 780: case HTTP_GOT_DATA:
1.88 frystyk 781: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 782: if (HTRequest_isDestination(request)) {
1.126 frystyk 783: HTRequest * source = HTRequest_source(request);
1.91 frystyk 784: HTLink *link =
1.127 frystyk 785: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 786: (HTAnchor *) anchor);
1.109 frystyk 787: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 788: }
1.112 frystyk 789: }
790: HTTPCleanup(request, HT_LOADED);
1.94 frystyk 791: return HT_OK;
1.71 frystyk 792: break;
793:
794: case HTTP_NO_DATA:
1.88 frystyk 795: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 796: if (HTRequest_isDestination(request)) {
1.126 frystyk 797: HTRequest * source = HTRequest_source(request);
1.91 frystyk 798: HTLink *link =
1.127 frystyk 799: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 800: (HTAnchor *) anchor);
1.109 frystyk 801: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 802: }
1.112 frystyk 803: }
804: HTTPCleanup(request, HT_NO_DATA);
1.94 frystyk 805: return HT_OK;
1.71 frystyk 806: break;
1.80 frystyk 807:
1.94 frystyk 808: case HTTP_RETRY:
1.88 frystyk 809: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 810: if (HTRequest_isDestination(request)) {
1.126 frystyk 811: HTRequest * source = HTRequest_source(request);
1.91 frystyk 812: HTLink *link =
1.127 frystyk 813: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.126 frystyk 814: (HTAnchor *) anchor);
1.109 frystyk 815: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 816: }
1.112 frystyk 817: HTRequest_killPostWeb(request);
818: }
819: HTTPCleanup(request, HT_RETRY);
1.94 frystyk 820: return HT_OK;
1.81 frystyk 821: break;
822:
1.71 frystyk 823: case HTTP_ERROR:
1.88 frystyk 824: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 825: if (HTRequest_isDestination(request)) {
1.126 frystyk 826: HTRequest * source = HTRequest_source(request);
1.91 frystyk 827: HTLink *link =
1.127 frystyk 828: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 829: (HTAnchor *) anchor);
1.109 frystyk 830: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 831: }
1.112 frystyk 832: HTRequest_killPostWeb(request);
833: }
1.120 eric 834: HTTPCleanup(request, status);
1.94 frystyk 835: return HT_OK;
1.71 frystyk 836: break;
837: }
838: } /* End of while(1) */
839: }
1.88 frystyk 840:
1.21 luotonen 841:
Webmaster