Annotation of libwww/Library/src/HTTP.c, revision 1.133
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.
1.133 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.132 1996年08月08日 02:17:03 frystyk Exp $
1.74 frystyk 7: **
8: ** This module implments the HTTP protocol as a state machine
1.55 frystyk 9: **
10: ** History:
1.59 frystyk 11: ** < May 24 94 ?? Unknown - but obviously written
1.56 frystyk 12: ** May 24 94 HF Made reentrent and cleaned up a bit. Implemented
13: ** Forward, redirection, error handling and referer field
1.67 duns 14: ** 8 Jul 94 FM Insulate free() from _free structure element.
1.71 frystyk 15: ** Jul 94 HFN Written on top of HTTP.c, Henrik Frystyk
1.55 frystyk 16: **
1.1 timbl 17: */
18:
1.78 frystyk 19: /* Library include files */
1.119 frystyk 20: #include "sysdep.h"
1.123 frystyk 21: #include "WWWUtil.h"
22: #include "WWWCore.h"
23: #include "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 */
1.133 ! frystyk 115: HT_FREE(http);
! 116: HTNet_setContext(net, NULL);
1.131 frystyk 117: HTNet_delete(net, status);
1.94 frystyk 118: return YES;
1.55 frystyk 119: }
120:
1.71 frystyk 121: /*
1.130 frystyk 122: ** Informational 1xx codes are handled separately
123: ** Returns YES if we should stop, NO if we should continue
1.55 frystyk 124: */
1.130 frystyk 125: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 126: {
1.130 frystyk 127: BOOL result = NO;
1.71 frystyk 128: switch (me->status) {
129:
1.130 frystyk 130: case 101:
131: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 132: me->reason, (int) strlen(me->reason),
1.130 frystyk 133: "HTTPInformation");
134:
135: /* Here we should swap to new protocol */
136:
137: result = YES;
1.127 frystyk 138: break;
139:
1.130 frystyk 140: default:
141: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
1.127 frystyk 142: me->reason, (int) strlen(me->reason),
1.130 frystyk 143: "HTTPInformation");
1.127 frystyk 144: break;
1.130 frystyk 145: }
146: return result;
147: }
148:
149: /*
150: ** This is a big switch handling all HTTP return codes. It puts in any
151: ** appropiate error message and decides whether we should expect data
152: ** or not.
153: */
154: PRIVATE void HTTPNextState (HTStream * me)
155: {
156: switch (me->status) {
1.127 frystyk 157:
1.78 frystyk 158: case 0: /* 0.9 response */
1.127 frystyk 159: case 200: /* OK */
160: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
161: me->reason, (int) strlen(me->reason),
162: "HTTPNextState");
1.112 frystyk 163: me->http->next = HTTP_GOT_DATA;
164: break;
165:
1.127 frystyk 166: case 201: /* Created */
1.112 frystyk 167: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
168: me->reason, (int) strlen(me->reason),
169: "HTTPNextState");
170: me->http->next = HTTP_GOT_DATA;
171: break;
172:
1.127 frystyk 173: case 202: /* Accepted */
1.112 frystyk 174: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
175: me->reason, (int) strlen(me->reason),
176: "HTTPNextState");
177: me->http->next = HTTP_GOT_DATA;
178: break;
179:
1.127 frystyk 180: case 203: /* Non-authoritative information */
181: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 182: me->reason, (int) strlen(me->reason),
183: "HTTPNextState");
1.81 frystyk 184: me->http->next = HTTP_GOT_DATA;
1.71 frystyk 185: break;
1.78 frystyk 186:
187: case 204: /* No Response */
1.112 frystyk 188: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
189: me->reason, (int) strlen(me->reason),
190: "HTTPNextState");
1.81 frystyk 191: me->http->next = HTTP_NO_DATA;
1.71 frystyk 192: break;
1.78 frystyk 193:
1.71 frystyk 194: case 301: /* Moved */
1.112 frystyk 195: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
196: me->reason, (int) strlen(me->reason),
197: "HTTPNextState");
198: me->http->next = HTTP_PERM_REDIRECT;
199: break;
200:
1.71 frystyk 201: case 302: /* Found */
1.112 frystyk 202: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
203: me->reason, (int) strlen(me->reason),
204: "HTTPNextState");
205: me->http->next = HTTP_TEMP_REDIRECT;
1.71 frystyk 206: break;
1.55 frystyk 207:
1.71 frystyk 208: case 303: /* Method */
1.107 frystyk 209: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
210: me->reason, (int) strlen(me->reason),
211: "HTTPNextState");
1.81 frystyk 212: me->http->next = HTTP_ERROR;
1.71 frystyk 213: break;
1.91 frystyk 214:
215: case 304: /* Not Modified */
1.131 frystyk 216: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 217: me->reason, (int) strlen(me->reason),
218: "HTTPNextState");
1.91 frystyk 219: me->http->next = HTTP_NOT_MODIFIED;
220: break;
1.55 frystyk 221:
1.78 frystyk 222: case 400: /* Bad Request */
1.104 frystyk 223: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 224: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 225: me->http->next = HTTP_ERROR;
1.71 frystyk 226: break;
1.70 howcome 227:
1.71 frystyk 228: case 401:
1.104 frystyk 229: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 230: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 231: me->http->next = HTTP_AA;
1.71 frystyk 232: break;
233:
234: case 402: /* Payment required */
1.104 frystyk 235: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 236: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 237: me->http->next = HTTP_ERROR;
1.71 frystyk 238: break;
1.55 frystyk 239:
1.71 frystyk 240: case 403: /* Forbidden */
1.104 frystyk 241: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 242: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 243: me->http->next = HTTP_ERROR;
1.71 frystyk 244: break;
1.55 frystyk 245:
1.71 frystyk 246: case 404: /* Not Found */
1.104 frystyk 247: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 248: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 249: me->http->next = HTTP_ERROR;
1.71 frystyk 250: break;
251:
1.78 frystyk 252: case 405: /* Not Allowed */
1.104 frystyk 253: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 254: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 255: me->http->next = HTTP_ERROR;
1.78 frystyk 256: break;
257:
258: case 406: /* None Acceptable */
1.104 frystyk 259: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 260: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 261: me->http->next = HTTP_ERROR;
1.78 frystyk 262: break;
263:
264: case 407: /* Proxy Authentication Required */
1.127 frystyk 265: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 266: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.131 frystyk 267: me->http->next = HTTP_PROXY_AA;
1.78 frystyk 268: break;
269:
270: case 408: /* Request Timeout */
1.104 frystyk 271: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 272: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 273: me->http->next = HTTP_ERROR;
1.78 frystyk 274: break;
275:
1.71 frystyk 276: case 500:
1.104 frystyk 277: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 278: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 279: me->http->next = HTTP_ERROR;
1.78 frystyk 280: break;
281:
1.71 frystyk 282: case 501:
1.104 frystyk 283: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 284: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 285: me->http->next = HTTP_ERROR;
1.78 frystyk 286: break;
287:
288: case 502:
1.104 frystyk 289: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 290: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 291: me->http->next = HTTP_ERROR;
1.78 frystyk 292: break;
293:
294: case 503:
1.104 frystyk 295: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 296: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 297:
298: /* If Retry-After header is found then return HT_RETRY else HT_ERROR */
1.126 frystyk 299: if (HTRequest_retryTime(me->request))
1.81 frystyk 300: me->http->next = HTTP_RETRY;
301: else
302: me->http->next = HTTP_ERROR;
1.78 frystyk 303: break;
304:
305: case 504:
1.104 frystyk 306: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 307: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 308: me->http->next = HTTP_ERROR;
1.71 frystyk 309: break;
1.78 frystyk 310:
1.71 frystyk 311: default: /* bad number */
1.104 frystyk 312: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 313: (void *) me->buffer, me->buflen, "HTTPNextState");
1.81 frystyk 314: me->http->next = HTTP_ERROR;
1.71 frystyk 315: break;
1.55 frystyk 316: }
317: }
318:
1.71 frystyk 319: /* ------------------------------------------------------------------------- */
320: /* HTTP Status Line Stream */
321: /* ------------------------------------------------------------------------- */
1.55 frystyk 322:
1.71 frystyk 323: /*
1.80 frystyk 324: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 325: ** then create a MIME-stream, else create a Guess stream to find out
326: ** what the 0.9 server is sending. We need to copy the buffer as we don't
327: ** know if we can modify the contents or not.
1.78 frystyk 328: **
329: ** Stream handling is a function of the status code returned from the
330: ** server:
331: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 332: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 333: **
334: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 335: */
1.100 frystyk 336: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 337: {
1.123 frystyk 338: HTRequest * req = me->request;
339: HTNet * net = req->net;
340: HTHost * host = HTNet_host(net);
1.80 frystyk 341: if (me->target) {
342: int status = PUTBLOCK(me->buffer, me->buflen);
343: if (status == HT_OK)
344: me->transparent = YES;
345: return status;
1.88 frystyk 346: } else if (HTRequest_isSource(req) && !req->output_stream) {
347: /*
348: ** We need to wait for the destinations to get ready
349: */
350: return HT_WOULD_BLOCK;
1.80 frystyk 351: }
1.88 frystyk 352:
1.132 frystyk 353: /*
354: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
355: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
356: */
357: #if 0
1.81 frystyk 358: if (strncasecomp(me->buffer, "http/", 5)) {
1.132 frystyk 359: #else
360: if (strncasecomp(me->buffer, "http", 4)) {
361: #endif
1.80 frystyk 362: int status;
1.104 frystyk 363: HTRequest_addError(req, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 364: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.105 frystyk 365: me->target = HTStreamStack(WWW_UNKNOWN, req->output_format,
366: req->output_stream, req, NO);
1.88 frystyk 367: me->http->next = HTTP_GOT_DATA;
1.80 frystyk 368: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
369: me->transparent = YES;
1.123 frystyk 370: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 371: return status;
372: } else {
1.133 ! frystyk 373: char *ptr = me->buffer+4; /* Skip the HTTP part */
1.81 frystyk 374: me->version = HTNextField(&ptr);
1.95 frystyk 375:
1.130 frystyk 376: /* Here we want to find out when to use persistent connection */
1.133 ! frystyk 377: if (!strncasecomp(me->version, "/1.0", 4)) {
1.128 frystyk 378: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
379: HTHost_setVersion(host, HTTP_10);
1.133 ! frystyk 380: } else if (!strncasecomp(me->version, "/1.", 3)) { /* 1.x family */
1.128 frystyk 381: HTHost_setVersion(host, HTTP_11);
1.133 ! frystyk 382: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE); /* By default */
! 383: } else {
! 384: if (PROT_TRACE)HTTrace("HTTP Status. No 1.x version number - treat it as a HTTP/1.0 server\n");
! 385: HTHost_setVersion(host, HTTP_10);
1.128 frystyk 386: }
1.95 frystyk 387:
1.81 frystyk 388: me->status = atoi(HTNextField(&ptr));
1.133 ! frystyk 389: /* Kludge to fix the NCSA server version bug */
! 390: if (me->status == 0) me->status = atoi(me->version);
! 391:
1.81 frystyk 392: me->reason = ptr;
393: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
394: *ptr = '0円';
395: else if ((ptr = strchr(me->reason, '\n')) != NULL)
396: *ptr = '0円';
397:
1.130 frystyk 398: /*
399: ** If it is a 1xx code then find out what to do and return until we
400: ** get the next code. In the case of Upgrade we may not get back here
401: ** at all. If we are uploading an entity then continue doing that
402: */
403: if (me->status/100 == 1) {
404: if (HTTPInformation(me)) me->transparent = YES;
405: me->buflen = 0;
406: me->state = EOL_BEGIN;
407: return HTMethod_hasEntity(HTRequest_method(req)) ?
408: HT_CONTINUE : HT_OK;
409: }
410:
1.81 frystyk 411: /* Set up the streams */
1.112 frystyk 412: if (me->status==200) {
1.80 frystyk 413: HTStream *s;
1.103 frystyk 414: me->target = HTStreamStack(WWW_MIME, req->output_format,
415: req->output_stream, req, NO);
1.80 frystyk 416:
1.103 frystyk 417: /* howcome: test for return value from HTCacheWriter 12/1/95 */
418: if (req->method==METHOD_GET && HTCache_isEnabled() &&
419: (s = HTCacheWriter(req, NULL, WWW_MIME, req->output_format,
420: req->output_stream))) {
1.113 frystyk 421: me->target = HTTee(me->target, s, NULL);
1.103 frystyk 422: }
1.94 frystyk 423: } else if (req->debug_stream) {
424: me->target = HTStreamStack(WWW_MIME, req->debug_format,
425: req->debug_stream, req, NO);
1.71 frystyk 426: } else {
1.103 frystyk 427: /* We still need to parser the MIME part */
1.114 frystyk 428: me->target = HTStreamStack(WWW_MIME, req->debug_format,
429: req->debug_stream, req, NO);
1.56 frystyk 430: }
1.133 ! frystyk 431:
! 432: /*
! 433: ** As we are getting fresh metainformation in the HTTP response,
! 434: ** we clear the old metainfomation in order not to mix it with the new
! 435: ** one. This is particularly important for the content-length and the
! 436: ** like.
! 437: */
! 438: {
! 439: HTParentAnchor * anchor = HTRequest_anchor(me->request);
! 440: HTAnchor_clearHeader(anchor);
! 441: }
! 442:
1.56 frystyk 443: }
1.113 frystyk 444: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 445: HTTPNextState(me); /* Get next state */
1.80 frystyk 446: me->transparent = YES;
447: return HT_OK;
1.71 frystyk 448: }
1.56 frystyk 449:
1.80 frystyk 450: /*
451: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
452: ** is found
453: */
1.119 frystyk 454: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 455: {
1.80 frystyk 456: while (!me->transparent && l-- > 0) {
457: int status;
458: if (me->target) {
459: if ((status = stream_pipe(me)) != HT_OK)
460: return status;
461: } else {
462: *(me->buffer+me->buflen++) = *b;
463: if (me->state == EOL_FCR) {
464: if (*b == LF) { /* Line found */
465: if ((status = stream_pipe(me)) != HT_OK)
466: return status;
467: } else {
468: me->state = EOL_BEGIN;
469: }
470: } else if (*b == CR) {
471: me->state = EOL_FCR;
472: } else if (*b == LF) {
473: if ((status = stream_pipe(me)) != HT_OK)
474: return status;
1.71 frystyk 475: } else {
1.80 frystyk 476: if (me->buflen >= MAX_STATUS_LEN) {
477: if ((status = stream_pipe(me)) != HT_OK)
478: return status;
479: }
1.71 frystyk 480: }
1.80 frystyk 481: b++;
1.71 frystyk 482: }
1.56 frystyk 483: }
1.99 frystyk 484: if (l > 0) return PUTBLOCK(b, l);
485: return HT_OK;
1.56 frystyk 486: }
487:
1.119 frystyk 488: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 489: {
1.80 frystyk 490: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 491: }
1.56 frystyk 492:
1.100 frystyk 493: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 494: {
1.80 frystyk 495: return HTTPStatus_put_block(me, &c, 1);
496: }
497:
1.100 frystyk 498: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 499: {
500: return (*me->target->isa->flush)(me->target);
1.71 frystyk 501: }
502:
1.100 frystyk 503: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 504: {
1.87 frystyk 505: int status = HT_OK;
506: if (me->target) {
507: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
508: return HT_WOULD_BLOCK;
509: }
1.115 frystyk 510: HT_FREE(me);
1.100 frystyk 511: return status;
1.71 frystyk 512: }
513:
1.104 frystyk 514: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 515: {
516: if (me->target)
1.74 frystyk 517: ABORT_TARGET;
1.115 frystyk 518: HT_FREE(me);
1.74 frystyk 519: if (PROT_TRACE)
1.116 eric 520: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 521: return HT_ERROR;
1.71 frystyk 522: }
523:
524: /* HTTPStatus Stream
525: ** -----------------
526: */
1.119 frystyk 527: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 528: {
529: "HTTPStatus",
1.80 frystyk 530: HTTPStatus_flush,
1.71 frystyk 531: HTTPStatus_free,
532: HTTPStatus_abort,
533: HTTPStatus_put_character,
534: HTTPStatus_put_string,
535: HTTPStatus_put_block
536: };
537:
1.113 frystyk 538: #if 0
1.100 frystyk 539: PRIVATE HTStream * HTTPStatus_new (HTRequest * request, http_info * http)
1.113 frystyk 540: #endif
541:
542: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
543: void * param,
544: HTFormat input_format,
545: HTFormat output_format,
546: HTStream * output_stream)
1.71 frystyk 547: {
1.115 frystyk 548: HTStream * me;
549: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
550: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 551: me->isa = &HTTPStatusClass;
1.113 frystyk 552: if (request) {
1.126 frystyk 553: HTNet * net = HTRequest_net(request);
1.125 frystyk 554: /* Get existing copy */
555: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 556: me->request = request;
557: me->http = http;
558: http->next = HTTP_ERROR;
559: me->state = EOL_BEGIN;
560: return me;
561: } else
562: return HTErrorStream();
1.71 frystyk 563: }
564:
565: /* ------------------------------------------------------------------------- */
566:
567: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 568: ** ==============================
569: **
570: ** Given a hypertext address, this routine loads a document.
571: **
572: ** On entry,
573: ** request This is the request structure
1.94 frystyk 574: ** returns HT_ERROR Error has occured in call back
575: ** HT_OK Call back was OK
1.55 frystyk 576: */
1.94 frystyk 577: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 578: {
1.71 frystyk 579: int status = HT_ERROR;
1.126 frystyk 580: HTNet * net = HTRequest_net(request); /* Generic protocol information */
1.55 frystyk 581: http_info *http; /* Specific protocol information */
1.112 frystyk 582: HTParentAnchor *anchor = HTRequest_anchor(request);
583:
1.94 frystyk 584: /*
585: ** Initiate a new http structure and bind to request structure
586: ** This is actually state HTTP_BEGIN, but it can't be in the state
587: ** machine as we need the structure first.
588: */
589: if (ops == FD_NONE) {
1.116 eric 590: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
1.112 frystyk 591: HTAnchor_physical(anchor));
1.133 ! frystyk 592: if (!net->context) {
! 593: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
! 594: HT_OUTOFMEM("HTLoadHTTP");
! 595: HTNet_setContext(net, http);
! 596: } else {
! 597: http = (http_info *) HTNet_context(net); /* Get existing copy */
! 598: }
1.71 frystyk 599: http->state = HTTP_BEGIN;
1.113 frystyk 600: http->next = HTTP_GOT_DATA;
1.98 frystyk 601: } else if (ops == FD_CLOSE) { /* Interrupted */
1.112 frystyk 602: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
603: NULL, 0, "HTLoadHTTP");
604: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 605: return HT_OK;
606: } else
1.125 frystyk 607: http = (http_info *) HTNet_context(net); /* Get existing copy */
1.71 frystyk 608:
609: /* Now jump into the machine. We know the state from the previous run */
610: while (1) {
611: switch (http->state) {
612: case HTTP_BEGIN:
1.129 frystyk 613: #if 0
1.71 frystyk 614: /*
615: ** Compose authorization information (this was moved here
616: ** from after the making of the connection so that the connection
617: ** wouldn't have to wait while prompting username and password
618: ** from the user). -- AL 13.10.93
619: */
1.117 frystyk 620: if (HTAuth_generate(request)) {
621: if (PROT_TRACE)HTTrace("HTTP........ Credentials generated\n");
622: http->state = HTTP_NEED_CONNECTION;
623: } else {
624: HTRequest_addError(request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
625: NULL, 0, "HTLoadHTTP");
626: http->state = HTTP_ERROR;
1.71 frystyk 627: }
1.129 frystyk 628: #else
629: http->state = HTTP_NEED_CONNECTION;
630: #endif
1.71 frystyk 631: break;
632:
1.123 frystyk 633: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
634: status = HTDoConnect(net, HTAnchor_physical(anchor), HTTP_PORT);
1.80 frystyk 635: if (status == HT_OK) {
1.123 frystyk 636: /*
637: ** Check the protocol class to see if we have connected to a
638: ** the right class of server, in this case HTTP.
639: */
640: {
641: HTHost * host = HTNet_host(net);
642: char * s_class = HTHost_class(host);
643: if (s_class && strcasecomp(s_class, "http")) {
644: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
645: NULL, 0, "HTLoadHTTP");
646: http->state = HTTP_ERROR;
647: break;
648: }
649: HTHost_setClass(host, "http");
1.95 frystyk 650: }
651:
1.123 frystyk 652: /*
653: ** Create the stream pipe FROM the channel to the application.
654: ** The target for the input stream pipe is set up using the
655: ** stream stack.
1.113 frystyk 656: */
1.126 frystyk 657: HTNet_getInput(net,
658: HTStreamStack(WWW_HTTP,
659: HTRequest_outputFormat(request),
660: HTRequest_outputStream(request),
661: request, YES), NULL, 0);
1.127 frystyk 662: HTRequest_setOutputConnected(request, YES);
663:
1.123 frystyk 664: /*
665: ** Create the stream pipe TO the channel from the application
666: ** and hook it up to the request object
667: */
668: {
669: HTOutputStream * output = HTNet_getOutput(net, NULL, 0);
1.126 frystyk 670: HTStream * app =
671: HTMethod_hasEntity(HTRequest_method(request)) ?
1.123 frystyk 672: HTMIMERequest_new(request,
673: HTTPRequest_new(request,(HTStream*) output,NO),YES) :
674: HTTPRequest_new(request, (HTStream*) output, YES);
675: HTRequest_setInputStream(request, app);
676: }
1.88 frystyk 677:
678: /*
679: ** Set up concurrent read/write if this request isn't the
680: ** source for a PUT or POST. As source we don't start reading
681: ** before all destinations are ready. If destination then
682: ** register the input stream and get ready for read
683: */
1.112 frystyk 684: if (HTRequest_isDestination(request)) {
1.124 eric 685: HTEvent_register(net->sockfd, request, (SockOps) FD_READ,
1.94 frystyk 686: HTLoadHTTP, net->priority);
1.88 frystyk 687: HTRequest_linkDestination(request);
688: }
1.71 frystyk 689: http->state = HTTP_NEED_REQUEST;
1.133 ! frystyk 690: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.94 frystyk 691: return HT_OK;
1.71 frystyk 692: else
693: http->state = HTTP_ERROR; /* Error or interrupt */
694: break;
695:
1.87 frystyk 696: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 697: case HTTP_NEED_REQUEST:
1.94 frystyk 698: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 699: if (HTRequest_isDestination(request)) {
1.126 frystyk 700: HTRequest * source = HTRequest_source(request);
701: HTNet * srcnet = HTRequest_net(source);
1.112 frystyk 702: if (srcnet) {
1.126 frystyk 703: SOCKET sockfd = HTNet_socket(srcnet);
704: HTEvent_register(sockfd, source,
1.112 frystyk 705: (SockOps) FD_READ,
706: srcnet->cbf, srcnet->priority);
1.126 frystyk 707: HTEvent_unregister(sockfd, FD_WRITE);
1.112 frystyk 708: }
1.94 frystyk 709: return HT_OK;
1.80 frystyk 710: }
1.126 frystyk 711:
712: /*
713: ** Should we use the input stream directly or call the post
714: ** callback function to send data down to the network?
715: */
716: {
717: HTStream * input = HTRequest_inputStream(request);
718: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 719: if (pcbf) {
720: status = pcbf(request, input);
721: if (status == HT_PAUSE || status == HT_LOADED)
722: ops = FD_READ;
723: } else {
724: status = (*input->isa->flush)(input);
1.126 frystyk 725: ops = FD_READ; /* Trick to ensure that we do READ */
1.131 frystyk 726: }
727: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 728: }
1.94 frystyk 729: } else if (ops == FD_READ) {
1.123 frystyk 730: status = (*net->input->isa->read)(net->input);
1.131 frystyk 731: if (status == HT_WOULD_BLOCK)
1.94 frystyk 732: return HT_OK;
1.131 frystyk 733: else if (status == HT_CONTINUE) {
1.130 frystyk 734: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
735: ops = FD_WRITE;
736: continue;
1.133 ! frystyk 737: } else if (status==HT_LOADED)
1.94 frystyk 738: http->state = http->next; /* Jump to next state */
1.133 ! frystyk 739: else if (status==HT_CLOSED) {
! 740: HTHost * host = HTNet_host(net);
! 741:
! 742: /*
! 743: ** If this is a persistent connection and we get a close
! 744: ** then it is an error and we should recover from it by
! 745: ** restarting the pipe line of requests if any
! 746: */
! 747: if (HTHost_isPersistent(host)) {
! 748: status = HT_RECOVER_PIPE;
! 749: http->state = HTTP_ERROR;
! 750: break;
! 751: } else
! 752: http->state = HTTP_GOT_DATA;
! 753: } else
1.94 frystyk 754: http->state = HTTP_ERROR;
1.90 frystyk 755: } else {
1.78 frystyk 756: http->state = HTTP_ERROR;
1.90 frystyk 757: }
1.71 frystyk 758: break;
1.80 frystyk 759:
1.91 frystyk 760: case HTTP_NOT_MODIFIED:
761: http->state = HTTP_ERROR;
762: break;
763:
1.112 frystyk 764: case HTTP_PERM_REDIRECT:
765: if (HTRequest_isPostWeb(request)) {
766: if (HTRequest_isDestination(request)) {
1.126 frystyk 767: HTRequest * source = HTRequest_source(request);
768: HTLink * link =
1.127 frystyk 769: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 770: (HTAnchor *) anchor);
771: HTLink_setResult(link, HT_LINK_ERROR);
772: }
1.88 frystyk 773: HTRequest_killPostWeb(request);
1.112 frystyk 774: }
775: HTTPCleanup(request, HT_PERM_REDIRECT);
776: return HT_OK;
777: break;
778:
1.88 frystyk 779:
1.112 frystyk 780: case HTTP_TEMP_REDIRECT:
781: if (HTRequest_isPostWeb(request)) {
782: if (HTRequest_isDestination(request)) {
1.126 frystyk 783: HTRequest * source = HTRequest_source(request);
1.112 frystyk 784: HTLink *link =
1.127 frystyk 785: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 786: (HTAnchor *) anchor);
787: HTLink_setResult(link, HT_LINK_ERROR);
1.58 frystyk 788: }
1.112 frystyk 789: HTRequest_killPostWeb(request);
1.71 frystyk 790: }
1.112 frystyk 791: HTTPCleanup(request, HT_TEMP_REDIRECT);
792: return HT_OK;
1.71 frystyk 793: break;
1.112 frystyk 794:
1.71 frystyk 795: case HTTP_AA:
1.112 frystyk 796: if (HTRequest_isPostWeb(request)) {
797: if (HTRequest_isDestination(request)) {
1.126 frystyk 798: HTRequest * source = HTRequest_source(request);
1.112 frystyk 799: HTLink *link =
1.127 frystyk 800: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 801: (HTAnchor *) anchor);
802: HTLink_setResult(link, HT_LINK_ERROR);
803: }
1.88 frystyk 804: HTRequest_killPostWeb(request);
1.71 frystyk 805: }
1.112 frystyk 806: HTTPCleanup(request, HT_NO_ACCESS);
1.131 frystyk 807: return HT_OK;
808: break;
809:
810: case HTTP_PROXY_AA:
811: if (HTRequest_isPostWeb(request)) {
812: if (HTRequest_isDestination(request)) {
813: HTRequest * source = HTRequest_source(request);
814: HTLink *link =
815: HTLink_find((HTAnchor *)HTRequest_anchor(source),
816: (HTAnchor *) anchor);
817: HTLink_setResult(link, HT_LINK_ERROR);
818: }
819: HTRequest_killPostWeb(request);
820: }
821: HTTPCleanup(request, HT_NO_PROXY_ACCESS);
1.112 frystyk 822: return HT_OK;
1.71 frystyk 823: break;
1.112 frystyk 824:
1.71 frystyk 825: case HTTP_GOT_DATA:
1.88 frystyk 826: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 827: if (HTRequest_isDestination(request)) {
1.126 frystyk 828: HTRequest * source = HTRequest_source(request);
1.91 frystyk 829: HTLink *link =
1.127 frystyk 830: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 831: (HTAnchor *) anchor);
1.109 frystyk 832: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 833: }
1.112 frystyk 834: }
835: HTTPCleanup(request, HT_LOADED);
1.94 frystyk 836: return HT_OK;
1.71 frystyk 837: break;
838:
839: case HTTP_NO_DATA:
1.88 frystyk 840: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 841: if (HTRequest_isDestination(request)) {
1.126 frystyk 842: HTRequest * source = HTRequest_source(request);
1.91 frystyk 843: HTLink *link =
1.127 frystyk 844: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 845: (HTAnchor *) anchor);
1.109 frystyk 846: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 847: }
1.112 frystyk 848: }
849: HTTPCleanup(request, HT_NO_DATA);
1.94 frystyk 850: return HT_OK;
1.71 frystyk 851: break;
1.80 frystyk 852:
1.94 frystyk 853: case HTTP_RETRY:
1.88 frystyk 854: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 855: if (HTRequest_isDestination(request)) {
1.126 frystyk 856: HTRequest * source = HTRequest_source(request);
1.91 frystyk 857: HTLink *link =
1.127 frystyk 858: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.126 frystyk 859: (HTAnchor *) anchor);
1.109 frystyk 860: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 861: }
1.112 frystyk 862: HTRequest_killPostWeb(request);
863: }
864: HTTPCleanup(request, HT_RETRY);
1.94 frystyk 865: return HT_OK;
1.81 frystyk 866: break;
867:
1.71 frystyk 868: case HTTP_ERROR:
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_ERROR);
1.91 frystyk 876: }
1.112 frystyk 877: HTRequest_killPostWeb(request);
878: }
1.120 eric 879: HTTPCleanup(request, status);
1.94 frystyk 880: return HT_OK;
1.71 frystyk 881: break;
882: }
883: } /* End of while(1) */
884: }
1.88 frystyk 885:
1.21 luotonen 886:
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