Annotation of libwww/Library/src/HTTP.c, revision 1.130
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.
1.130 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.129 1996年07月08日 19:11:03 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,
1.71 frystyk 58: HTTP_AA
1.59 frystyk 59: } HTTPState;
1.55 frystyk 60:
1.94 frystyk 61: /* This is the context structure for the this module */
1.55 frystyk 62: typedef struct _http_info {
1.81 frystyk 63: HTTPState state; /* Current State of the connection */
64: HTTPState next; /* Next state */
1.55 frystyk 65: } http_info;
66:
1.88 frystyk 67: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 68:
1.71 frystyk 69: struct _HTStream {
1.119 frystyk 70: const HTStreamClass * isa;
1.71 frystyk 71: HTStream * target;
72: HTRequest * request;
73: http_info * http;
1.121 frystyk 74: HTEOLState state;
1.71 frystyk 75: BOOL transparent;
1.81 frystyk 76: char * version; /* Should we save this? */
1.71 frystyk 77: int status;
1.81 frystyk 78: char * reason;
1.71 frystyk 79: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 80: int buflen;
1.71 frystyk 81: };
1.21 luotonen 82:
1.123 frystyk 83: struct _HTInputStream {
84: const HTInputStreamClass * isa;
85: };
86:
1.71 frystyk 87: /* ------------------------------------------------------------------------- */
88: /* Help Functions */
89: /* ------------------------------------------------------------------------- */
1.21 luotonen 90:
1.94 frystyk 91: /* HTTPCleanup
92: ** -----------
1.55 frystyk 93: ** This function closes the connection and frees memory.
1.94 frystyk 94: ** Returns YES on OK, else NO
1.1 timbl 95: */
1.94 frystyk 96: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 97: {
1.126 frystyk 98: HTNet * net = HTRequest_net(req);
99: http_info * http = (http_info *) HTNet_context(net);
100: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 101:
1.94 frystyk 102: /* Free stream with data TO network */
1.112 frystyk 103: if (HTRequest_isDestination(req))
104: HTRequest_removeDestination(req);
1.126 frystyk 105: else if (input) {
1.94 frystyk 106: if (status == HT_INTERRUPTED)
1.126 frystyk 107: (*input->isa->abort)(input, NULL);
1.94 frystyk 108: else
1.126 frystyk 109: (*input->isa->_free)(input);
110: HTRequest_setInputStream(req, NULL);
1.94 frystyk 111: }
1.88 frystyk 112:
1.94 frystyk 113: /* Remove the request object and our own context structure for http */
1.126 frystyk 114: HTNet_delete(net, HTRequest_internal(req) ? HT_IGNORE : status);
1.115 frystyk 115: HT_FREE(http);
1.94 frystyk 116: return YES;
1.55 frystyk 117: }
118:
1.71 frystyk 119: /*
1.130 ! frystyk 120: ** Informational 1xx codes are handled separately
! 121: ** Returns YES if we should stop, NO if we should continue
1.55 frystyk 122: */
1.130 ! frystyk 123: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 124: {
1.130 ! frystyk 125: BOOL result = NO;
1.71 frystyk 126: switch (me->status) {
127:
1.130 ! frystyk 128: case 101:
! 129: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 130: me->reason, (int) strlen(me->reason),
1.130 ! frystyk 131: "HTTPInformation");
! 132:
! 133: /* Here we should swap to new protocol */
! 134:
! 135: result = YES;
1.127 frystyk 136: break;
137:
1.130 ! frystyk 138: default:
! 139: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
1.127 frystyk 140: me->reason, (int) strlen(me->reason),
1.130 ! frystyk 141: "HTTPInformation");
1.127 frystyk 142: break;
1.130 ! frystyk 143: }
! 144: return result;
! 145: }
! 146:
! 147: /*
! 148: ** This is a big switch handling all HTTP return codes. It puts in any
! 149: ** appropiate error message and decides whether we should expect data
! 150: ** or not.
! 151: */
! 152: PRIVATE void HTTPNextState (HTStream * me)
! 153: {
! 154: switch (me->status) {
1.127 frystyk 155:
1.78 frystyk 156: case 0: /* 0.9 response */
1.127 frystyk 157: case 200: /* OK */
158: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
159: me->reason, (int) strlen(me->reason),
160: "HTTPNextState");
1.112 frystyk 161: me->http->next = HTTP_GOT_DATA;
162: break;
163:
1.127 frystyk 164: case 201: /* Created */
1.112 frystyk 165: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
166: me->reason, (int) strlen(me->reason),
167: "HTTPNextState");
168: me->http->next = HTTP_GOT_DATA;
169: break;
170:
1.127 frystyk 171: case 202: /* Accepted */
1.112 frystyk 172: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
173: me->reason, (int) strlen(me->reason),
174: "HTTPNextState");
175: me->http->next = HTTP_GOT_DATA;
176: break;
177:
1.127 frystyk 178: case 203: /* Non-authoritative information */
179: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NON_AUTHORITATIVE,
1.112 frystyk 180: me->reason, (int) strlen(me->reason),
181: "HTTPNextState");
1.81 frystyk 182: me->http->next = HTTP_GOT_DATA;
1.71 frystyk 183: break;
1.78 frystyk 184:
185: case 204: /* No Response */
1.112 frystyk 186: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
187: me->reason, (int) strlen(me->reason),
188: "HTTPNextState");
1.81 frystyk 189: me->http->next = HTTP_NO_DATA;
1.71 frystyk 190: break;
1.78 frystyk 191:
1.71 frystyk 192: case 301: /* Moved */
1.112 frystyk 193: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
194: me->reason, (int) strlen(me->reason),
195: "HTTPNextState");
196: me->http->next = HTTP_PERM_REDIRECT;
197: break;
198:
1.71 frystyk 199: case 302: /* Found */
1.112 frystyk 200: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
201: me->reason, (int) strlen(me->reason),
202: "HTTPNextState");
203: me->http->next = HTTP_TEMP_REDIRECT;
1.71 frystyk 204: break;
1.55 frystyk 205:
1.71 frystyk 206: case 303: /* Method */
1.107 frystyk 207: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
208: me->reason, (int) strlen(me->reason),
209: "HTTPNextState");
1.81 frystyk 210: me->http->next = HTTP_ERROR;
1.71 frystyk 211: break;
1.91 frystyk 212:
213: case 304: /* Not Modified */
1.112 frystyk 214: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_MODIFIED,
215: me->reason, (int) strlen(me->reason),
216: "HTTPNextState");
1.91 frystyk 217: me->http->next = HTTP_NOT_MODIFIED;
218: break;
1.55 frystyk 219:
1.78 frystyk 220: case 400: /* Bad Request */
1.104 frystyk 221: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 222: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 223: me->http->next = HTTP_ERROR;
1.71 frystyk 224: break;
1.70 howcome 225:
1.71 frystyk 226: case 401:
1.104 frystyk 227: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 228: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 229: me->http->next = HTTP_AA;
1.71 frystyk 230: break;
231:
232: case 402: /* Payment required */
1.104 frystyk 233: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 234: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 235: me->http->next = HTTP_ERROR;
1.71 frystyk 236: break;
1.55 frystyk 237:
1.71 frystyk 238: case 403: /* Forbidden */
1.104 frystyk 239: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 240: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 241: me->http->next = HTTP_ERROR;
1.71 frystyk 242: break;
1.55 frystyk 243:
1.71 frystyk 244: case 404: /* Not Found */
1.104 frystyk 245: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 246: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 247: me->http->next = HTTP_ERROR;
1.71 frystyk 248: break;
249:
1.78 frystyk 250: case 405: /* Not Allowed */
1.104 frystyk 251: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 252: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 253: me->http->next = HTTP_ERROR;
1.78 frystyk 254: break;
255:
256: case 406: /* None Acceptable */
1.104 frystyk 257: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 258: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 259: me->http->next = HTTP_ERROR;
1.78 frystyk 260: break;
261:
262: case 407: /* Proxy Authentication Required */
1.127 frystyk 263: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 264: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 265: me->http->next = HTTP_ERROR;
1.78 frystyk 266: break;
267:
268: case 408: /* Request Timeout */
1.104 frystyk 269: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 270: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 271: me->http->next = HTTP_ERROR;
1.78 frystyk 272: break;
273:
1.71 frystyk 274: case 500:
1.104 frystyk 275: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 276: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 277: me->http->next = HTTP_ERROR;
1.78 frystyk 278: break;
279:
1.71 frystyk 280: case 501:
1.104 frystyk 281: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 282: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 283: me->http->next = HTTP_ERROR;
1.78 frystyk 284: break;
285:
286: case 502:
1.104 frystyk 287: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 288: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 289: me->http->next = HTTP_ERROR;
1.78 frystyk 290: break;
291:
292: case 503:
1.104 frystyk 293: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 294: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 295:
296: /* If Retry-After header is found then return HT_RETRY else HT_ERROR */
1.126 frystyk 297: if (HTRequest_retryTime(me->request))
1.81 frystyk 298: me->http->next = HTTP_RETRY;
299: else
300: me->http->next = HTTP_ERROR;
1.78 frystyk 301: break;
302:
303: case 504:
1.104 frystyk 304: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 305: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 306: me->http->next = HTTP_ERROR;
1.71 frystyk 307: break;
1.78 frystyk 308:
1.71 frystyk 309: default: /* bad number */
1.104 frystyk 310: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 311: (void *) me->buffer, me->buflen, "HTTPNextState");
1.81 frystyk 312: me->http->next = HTTP_ERROR;
1.71 frystyk 313: break;
1.55 frystyk 314: }
315: }
316:
1.71 frystyk 317: /* ------------------------------------------------------------------------- */
318: /* HTTP Status Line Stream */
319: /* ------------------------------------------------------------------------- */
1.55 frystyk 320:
1.71 frystyk 321: /*
1.80 frystyk 322: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 323: ** then create a MIME-stream, else create a Guess stream to find out
324: ** what the 0.9 server is sending. We need to copy the buffer as we don't
325: ** know if we can modify the contents or not.
1.78 frystyk 326: **
327: ** Stream handling is a function of the status code returned from the
328: ** server:
329: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 330: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 331: **
332: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 333: */
1.100 frystyk 334: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 335: {
1.123 frystyk 336: HTRequest * req = me->request;
337: HTNet * net = req->net;
338: HTHost * host = HTNet_host(net);
1.80 frystyk 339: if (me->target) {
340: int status = PUTBLOCK(me->buffer, me->buflen);
341: if (status == HT_OK)
342: me->transparent = YES;
343: return status;
1.88 frystyk 344: } else if (HTRequest_isSource(req) && !req->output_stream) {
345: /*
346: ** We need to wait for the destinations to get ready
347: */
348: return HT_WOULD_BLOCK;
1.80 frystyk 349: }
1.88 frystyk 350:
1.81 frystyk 351: if (strncasecomp(me->buffer, "http/", 5)) {
1.80 frystyk 352: int status;
1.104 frystyk 353: HTRequest_addError(req, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 354: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.105 frystyk 355: me->target = HTStreamStack(WWW_UNKNOWN, req->output_format,
356: req->output_stream, req, NO);
1.88 frystyk 357: me->http->next = HTTP_GOT_DATA;
1.80 frystyk 358: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
359: me->transparent = YES;
1.123 frystyk 360: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 361: return status;
362: } else {
1.81 frystyk 363: char *ptr = me->buffer+5; /* Skip the HTTP part */
364: me->version = HTNextField(&ptr);
1.95 frystyk 365:
1.130 ! frystyk 366: /* Here we want to find out when to use persistent connection */
1.128 frystyk 367: if (!strncasecomp(me->version, "1.0", 3)) {
368: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
369: HTHost_setVersion(host, HTTP_10);
370: } else {
371: HTHost_setVersion(host, HTTP_11);
372: HTNet_setPersistent(net, YES); /* By default */
373: }
1.95 frystyk 374:
1.81 frystyk 375: me->status = atoi(HTNextField(&ptr));
376: me->reason = ptr;
377: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
378: *ptr = '0円';
379: else if ((ptr = strchr(me->reason, '\n')) != NULL)
380: *ptr = '0円';
381:
1.130 ! frystyk 382: /*
! 383: ** If it is a 1xx code then find out what to do and return until we
! 384: ** get the next code. In the case of Upgrade we may not get back here
! 385: ** at all. If we are uploading an entity then continue doing that
! 386: */
! 387: if (me->status/100 == 1) {
! 388: if (HTTPInformation(me)) me->transparent = YES;
! 389: me->buflen = 0;
! 390: me->state = EOL_BEGIN;
! 391: return HTMethod_hasEntity(HTRequest_method(req)) ?
! 392: HT_CONTINUE : HT_OK;
! 393: }
! 394:
1.81 frystyk 395: /* Set up the streams */
1.112 frystyk 396: if (me->status==200) {
1.80 frystyk 397: HTStream *s;
1.103 frystyk 398: me->target = HTStreamStack(WWW_MIME, req->output_format,
399: req->output_stream, req, NO);
1.80 frystyk 400:
1.103 frystyk 401: /* howcome: test for return value from HTCacheWriter 12/1/95 */
402: if (req->method==METHOD_GET && HTCache_isEnabled() &&
403: (s = HTCacheWriter(req, NULL, WWW_MIME, req->output_format,
404: req->output_stream))) {
1.113 frystyk 405: me->target = HTTee(me->target, s, NULL);
1.103 frystyk 406: }
1.94 frystyk 407: } else if (req->debug_stream) {
408: me->target = HTStreamStack(WWW_MIME, req->debug_format,
409: req->debug_stream, req, NO);
1.71 frystyk 410: } else {
1.103 frystyk 411: /* We still need to parser the MIME part */
1.114 frystyk 412: me->target = HTStreamStack(WWW_MIME, req->debug_format,
413: req->debug_stream, req, NO);
1.56 frystyk 414: }
415: }
1.113 frystyk 416: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 417: HTTPNextState(me); /* Get next state */
1.80 frystyk 418: me->transparent = YES;
419: return HT_OK;
1.71 frystyk 420: }
1.56 frystyk 421:
1.80 frystyk 422: /*
423: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
424: ** is found
425: */
1.119 frystyk 426: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 427: {
1.80 frystyk 428: while (!me->transparent && l-- > 0) {
429: int status;
430: if (me->target) {
431: if ((status = stream_pipe(me)) != HT_OK)
432: return status;
433: } else {
434: *(me->buffer+me->buflen++) = *b;
435: if (me->state == EOL_FCR) {
436: if (*b == LF) { /* Line found */
437: if ((status = stream_pipe(me)) != HT_OK)
438: return status;
439: } else {
440: me->state = EOL_BEGIN;
441: }
442: } else if (*b == CR) {
443: me->state = EOL_FCR;
444: } else if (*b == LF) {
445: if ((status = stream_pipe(me)) != HT_OK)
446: return status;
1.71 frystyk 447: } else {
1.80 frystyk 448: if (me->buflen >= MAX_STATUS_LEN) {
449: if ((status = stream_pipe(me)) != HT_OK)
450: return status;
451: }
1.71 frystyk 452: }
1.80 frystyk 453: b++;
1.71 frystyk 454: }
1.56 frystyk 455: }
1.99 frystyk 456: if (l > 0) return PUTBLOCK(b, l);
457: return HT_OK;
1.56 frystyk 458: }
459:
1.119 frystyk 460: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 461: {
1.80 frystyk 462: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 463: }
1.56 frystyk 464:
1.100 frystyk 465: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 466: {
1.80 frystyk 467: return HTTPStatus_put_block(me, &c, 1);
468: }
469:
1.100 frystyk 470: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 471: {
472: return (*me->target->isa->flush)(me->target);
1.71 frystyk 473: }
474:
1.100 frystyk 475: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 476: {
1.87 frystyk 477: int status = HT_OK;
478: if (me->target) {
479: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
480: return HT_WOULD_BLOCK;
481: }
1.115 frystyk 482: HT_FREE(me);
1.100 frystyk 483: return status;
1.71 frystyk 484: }
485:
1.104 frystyk 486: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 487: {
488: if (me->target)
1.74 frystyk 489: ABORT_TARGET;
1.115 frystyk 490: HT_FREE(me);
1.74 frystyk 491: if (PROT_TRACE)
1.116 eric 492: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 493: return HT_ERROR;
1.71 frystyk 494: }
495:
496: /* HTTPStatus Stream
497: ** -----------------
498: */
1.119 frystyk 499: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 500: {
501: "HTTPStatus",
1.80 frystyk 502: HTTPStatus_flush,
1.71 frystyk 503: HTTPStatus_free,
504: HTTPStatus_abort,
505: HTTPStatus_put_character,
506: HTTPStatus_put_string,
507: HTTPStatus_put_block
508: };
509:
1.113 frystyk 510: #if 0
1.100 frystyk 511: PRIVATE HTStream * HTTPStatus_new (HTRequest * request, http_info * http)
1.113 frystyk 512: #endif
513:
514: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
515: void * param,
516: HTFormat input_format,
517: HTFormat output_format,
518: HTStream * output_stream)
1.71 frystyk 519: {
1.115 frystyk 520: HTStream * me;
521: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
522: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 523: me->isa = &HTTPStatusClass;
1.113 frystyk 524: if (request) {
1.126 frystyk 525: HTNet * net = HTRequest_net(request);
1.125 frystyk 526: /* Get existing copy */
527: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 528: me->request = request;
529: me->http = http;
530: http->next = HTTP_ERROR;
531: me->state = EOL_BEGIN;
532: return me;
533: } else
534: return HTErrorStream();
1.71 frystyk 535: }
536:
537: /* ------------------------------------------------------------------------- */
538:
539: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 540: ** ==============================
541: **
542: ** Given a hypertext address, this routine loads a document.
543: **
544: ** On entry,
545: ** request This is the request structure
1.94 frystyk 546: ** returns HT_ERROR Error has occured in call back
547: ** HT_OK Call back was OK
1.55 frystyk 548: */
1.94 frystyk 549: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 550: {
1.71 frystyk 551: int status = HT_ERROR;
1.126 frystyk 552: HTNet * net = HTRequest_net(request); /* Generic protocol information */
1.55 frystyk 553: http_info *http; /* Specific protocol information */
1.112 frystyk 554: HTParentAnchor *anchor = HTRequest_anchor(request);
555:
1.94 frystyk 556: /*
557: ** Initiate a new http structure and bind to request structure
558: ** This is actually state HTTP_BEGIN, but it can't be in the state
559: ** machine as we need the structure first.
560: */
561: if (ops == FD_NONE) {
1.116 eric 562: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
1.112 frystyk 563: HTAnchor_physical(anchor));
1.115 frystyk 564: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
565: HT_OUTOFMEM("HTLoadHTTP");
1.71 frystyk 566: http->state = HTTP_BEGIN;
1.113 frystyk 567: http->next = HTTP_GOT_DATA;
1.125 frystyk 568: HTNet_setContext(net, http);
1.98 frystyk 569: } else if (ops == FD_CLOSE) { /* Interrupted */
1.112 frystyk 570: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
571: NULL, 0, "HTLoadHTTP");
572: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 573: return HT_OK;
574: } else
1.125 frystyk 575: http = (http_info *) HTNet_context(net); /* Get existing copy */
1.71 frystyk 576:
577: /* Now jump into the machine. We know the state from the previous run */
578: while (1) {
579: switch (http->state) {
580: case HTTP_BEGIN:
1.129 frystyk 581: #if 0
1.71 frystyk 582: /*
583: ** Compose authorization information (this was moved here
584: ** from after the making of the connection so that the connection
585: ** wouldn't have to wait while prompting username and password
586: ** from the user). -- AL 13.10.93
587: */
1.117 frystyk 588: if (HTAuth_generate(request)) {
589: if (PROT_TRACE)HTTrace("HTTP........ Credentials generated\n");
590: http->state = HTTP_NEED_CONNECTION;
591: } else {
592: HTRequest_addError(request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
593: NULL, 0, "HTLoadHTTP");
594: http->state = HTTP_ERROR;
1.71 frystyk 595: }
1.129 frystyk 596: #else
597: http->state = HTTP_NEED_CONNECTION;
598: #endif
1.71 frystyk 599: break;
600:
1.123 frystyk 601: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
602: status = HTDoConnect(net, HTAnchor_physical(anchor), HTTP_PORT);
1.80 frystyk 603: if (status == HT_OK) {
1.123 frystyk 604: /*
605: ** Check the protocol class to see if we have connected to a
606: ** the right class of server, in this case HTTP.
607: */
608: {
609: HTHost * host = HTNet_host(net);
610: char * s_class = HTHost_class(host);
611: if (s_class && strcasecomp(s_class, "http")) {
612: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
613: NULL, 0, "HTLoadHTTP");
614: http->state = HTTP_ERROR;
615: break;
616: }
617: HTHost_setClass(host, "http");
1.95 frystyk 618: }
619:
1.123 frystyk 620: /*
621: ** Create the stream pipe FROM the channel to the application.
622: ** The target for the input stream pipe is set up using the
623: ** stream stack.
1.113 frystyk 624: */
1.126 frystyk 625: HTNet_getInput(net,
626: HTStreamStack(WWW_HTTP,
627: HTRequest_outputFormat(request),
628: HTRequest_outputStream(request),
629: request, YES), NULL, 0);
1.127 frystyk 630: HTRequest_setOutputConnected(request, YES);
631:
1.123 frystyk 632: /*
633: ** Create the stream pipe TO the channel from the application
634: ** and hook it up to the request object
635: */
636: {
637: HTOutputStream * output = HTNet_getOutput(net, NULL, 0);
1.126 frystyk 638: HTStream * app =
639: HTMethod_hasEntity(HTRequest_method(request)) ?
1.123 frystyk 640: HTMIMERequest_new(request,
641: HTTPRequest_new(request,(HTStream*) output,NO),YES) :
642: HTTPRequest_new(request, (HTStream*) output, YES);
643: HTRequest_setInputStream(request, app);
644: }
1.88 frystyk 645:
646: /*
647: ** Set up concurrent read/write if this request isn't the
648: ** source for a PUT or POST. As source we don't start reading
649: ** before all destinations are ready. If destination then
650: ** register the input stream and get ready for read
651: */
1.112 frystyk 652: if (HTRequest_isDestination(request)) {
1.124 eric 653: HTEvent_register(net->sockfd, request, (SockOps) FD_READ,
1.94 frystyk 654: HTLoadHTTP, net->priority);
1.88 frystyk 655: HTRequest_linkDestination(request);
656: }
1.71 frystyk 657: http->state = HTTP_NEED_REQUEST;
1.96 frystyk 658: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
1.94 frystyk 659: return HT_OK;
1.71 frystyk 660: else
661: http->state = HTTP_ERROR; /* Error or interrupt */
662: break;
663:
1.87 frystyk 664: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 665: case HTTP_NEED_REQUEST:
1.94 frystyk 666: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 667: if (HTRequest_isDestination(request)) {
1.126 frystyk 668: HTRequest * source = HTRequest_source(request);
669: HTNet * srcnet = HTRequest_net(source);
1.112 frystyk 670: if (srcnet) {
1.126 frystyk 671: SOCKET sockfd = HTNet_socket(srcnet);
672: HTEvent_register(sockfd, source,
1.112 frystyk 673: (SockOps) FD_READ,
674: srcnet->cbf, srcnet->priority);
1.126 frystyk 675: HTEvent_unregister(sockfd, FD_WRITE);
1.112 frystyk 676: }
1.94 frystyk 677: return HT_OK;
1.80 frystyk 678: }
1.126 frystyk 679:
680: /*
681: ** Should we use the input stream directly or call the post
682: ** callback function to send data down to the network?
683: */
684: {
685: HTStream * input = HTRequest_inputStream(request);
686: HTPostCallback * pcbf = HTRequest_postCallback(request);
687: status = pcbf ? pcbf(request, input) :
688: (*input->isa->flush)(input);
689: if (status == HT_WOULD_BLOCK)
690: return HT_OK;
691: else
692: ops = FD_READ; /* Trick to ensure that we do READ */
693: }
1.94 frystyk 694: } else if (ops == FD_READ) {
1.123 frystyk 695: status = (*net->input->isa->read)(net->input);
1.130 ! frystyk 696: if (status == HT_WOULD_BLOCK || status == HT_PAUSE)
1.94 frystyk 697: return HT_OK;
1.130 ! frystyk 698: else if (status==HT_CONTINUE) {
! 699: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
! 700: ops = FD_WRITE;
! 701: continue;
! 702: } else if (status==HT_LOADED || status==HT_CLOSED)
1.94 frystyk 703: http->state = http->next; /* Jump to next state */
704: else
705: http->state = HTTP_ERROR;
1.90 frystyk 706: } else {
1.78 frystyk 707: http->state = HTTP_ERROR;
1.90 frystyk 708: }
1.71 frystyk 709: break;
1.80 frystyk 710:
1.91 frystyk 711: case HTTP_NOT_MODIFIED:
712: http->state = HTTP_ERROR;
713: break;
714:
1.112 frystyk 715: case HTTP_PERM_REDIRECT:
716: if (HTRequest_isPostWeb(request)) {
717: if (HTRequest_isDestination(request)) {
1.126 frystyk 718: HTRequest * source = HTRequest_source(request);
719: HTLink * link =
1.127 frystyk 720: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 721: (HTAnchor *) anchor);
722: HTLink_setResult(link, HT_LINK_ERROR);
723: }
1.88 frystyk 724: HTRequest_killPostWeb(request);
1.112 frystyk 725: }
726: HTTPCleanup(request, HT_PERM_REDIRECT);
727: return HT_OK;
728: break;
729:
1.88 frystyk 730:
1.112 frystyk 731: case HTTP_TEMP_REDIRECT:
732: if (HTRequest_isPostWeb(request)) {
733: if (HTRequest_isDestination(request)) {
1.126 frystyk 734: HTRequest * source = HTRequest_source(request);
1.112 frystyk 735: HTLink *link =
1.127 frystyk 736: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 737: (HTAnchor *) anchor);
738: HTLink_setResult(link, HT_LINK_ERROR);
1.58 frystyk 739: }
1.112 frystyk 740: HTRequest_killPostWeb(request);
1.71 frystyk 741: }
1.112 frystyk 742: HTTPCleanup(request, HT_TEMP_REDIRECT);
743: return HT_OK;
1.71 frystyk 744: break;
1.112 frystyk 745:
1.71 frystyk 746: case HTTP_AA:
1.112 frystyk 747: if (HTRequest_isPostWeb(request)) {
748: if (HTRequest_isDestination(request)) {
1.126 frystyk 749: HTRequest * source = HTRequest_source(request);
1.112 frystyk 750: HTLink *link =
1.127 frystyk 751: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 752: (HTAnchor *) anchor);
753: HTLink_setResult(link, HT_LINK_ERROR);
754: }
1.88 frystyk 755: HTRequest_killPostWeb(request);
1.71 frystyk 756: }
1.112 frystyk 757: HTTPCleanup(request, HT_NO_ACCESS);
758: return HT_OK;
1.71 frystyk 759: break;
1.112 frystyk 760:
1.71 frystyk 761: case HTTP_GOT_DATA:
1.88 frystyk 762: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 763: if (HTRequest_isDestination(request)) {
1.126 frystyk 764: HTRequest * source = HTRequest_source(request);
1.91 frystyk 765: HTLink *link =
1.127 frystyk 766: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 767: (HTAnchor *) anchor);
1.109 frystyk 768: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 769: }
1.112 frystyk 770: }
771: HTTPCleanup(request, HT_LOADED);
1.94 frystyk 772: return HT_OK;
1.71 frystyk 773: break;
774:
775: case HTTP_NO_DATA:
1.88 frystyk 776: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 777: if (HTRequest_isDestination(request)) {
1.126 frystyk 778: HTRequest * source = HTRequest_source(request);
1.91 frystyk 779: HTLink *link =
1.127 frystyk 780: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 781: (HTAnchor *) anchor);
1.109 frystyk 782: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 783: }
1.112 frystyk 784: }
785: HTTPCleanup(request, HT_NO_DATA);
1.94 frystyk 786: return HT_OK;
1.71 frystyk 787: break;
1.80 frystyk 788:
1.94 frystyk 789: case HTTP_RETRY:
1.88 frystyk 790: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 791: if (HTRequest_isDestination(request)) {
1.126 frystyk 792: HTRequest * source = HTRequest_source(request);
1.91 frystyk 793: HTLink *link =
1.127 frystyk 794: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.126 frystyk 795: (HTAnchor *) anchor);
1.109 frystyk 796: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 797: }
1.112 frystyk 798: HTRequest_killPostWeb(request);
799: }
800: HTTPCleanup(request, HT_RETRY);
1.94 frystyk 801: return HT_OK;
1.81 frystyk 802: break;
803:
1.71 frystyk 804: case HTTP_ERROR:
1.88 frystyk 805: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 806: if (HTRequest_isDestination(request)) {
1.126 frystyk 807: HTRequest * source = HTRequest_source(request);
1.91 frystyk 808: HTLink *link =
1.127 frystyk 809: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 810: (HTAnchor *) anchor);
1.109 frystyk 811: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 812: }
1.112 frystyk 813: HTRequest_killPostWeb(request);
814: }
1.120 eric 815: HTTPCleanup(request, status);
1.94 frystyk 816: return HT_OK;
1.71 frystyk 817: break;
818: }
819: } /* End of while(1) */
820: }
1.88 frystyk 821:
1.21 luotonen 822:
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