Annotation of libwww/Library/src/HTTP.c, revision 1.111.2.1
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.
6: **
7: ** This module implments the HTTP protocol as a state machine
1.55 frystyk 8: **
9: ** History:
1.59 frystyk 10: ** < May 24 94 ?? Unknown - but obviously written
1.56 frystyk 11: ** May 24 94 HF Made reentrent and cleaned up a bit. Implemented
12: ** Forward, redirection, error handling and referer field
1.67 duns 13: ** 8 Jul 94 FM Insulate free() from _free structure element.
1.71 frystyk 14: ** Jul 94 HFN Written on top of HTTP.c, Henrik Frystyk
1.55 frystyk 15: **
1.1 timbl 16: */
17:
1.78 frystyk 18: /* Library include files */
19: #include "tcp.h"
1.1 timbl 20: #include "HTUtils.h"
1.78 frystyk 21: #include "HTString.h"
1.71 frystyk 22: #include "HTParse.h"
1.1 timbl 23: #include "HTTCP.h"
24: #include "HTFormat.h"
1.85 frystyk 25: #include "HTSocket.h"
1.94 frystyk 26: #include "HTReqMan.h"
1.2 timbl 27: #include "HTAlert.h"
1.14 luotonen 28: #include "HTAABrow.h" /* Access Authorization */
1.20 timbl 29: #include "HTTee.h" /* Tee off a cache stream */
1.78 frystyk 30: #include "HTFWrite.h" /* Write to cache file */
1.90 frystyk 31: #include "HTCache.h"
1.80 frystyk 32: #include "HTWriter.h"
1.54 luotonen 33: #include "HTError.h"
1.94 frystyk 34: #include "HTAccess.h"
1.55 frystyk 35: #include "HTChunk.h"
1.105 frystyk 36: #include "HTWWWStr.h"
1.95 frystyk 37: #include "HTNetMan.h"
1.109 frystyk 38: #include "HTTPUtil.h"
1.80 frystyk 39: #include "HTTPReq.h"
1.55 frystyk 40: #include "HTTP.h" /* Implements */
41:
42: /* Macros and other defines */
1.94 frystyk 43: #ifndef HTTP_PORT
44: #define HTTP_PORT 80 /* Allocated to http by Jon Postel/ISI 24-Jan-92 */
45: #endif
46:
1.71 frystyk 47: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
48: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
49: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
50: #define FREE_TARGET (*me->target->isa->_free)(me->target)
1.74 frystyk 51: #define ABORT_TARGET (*me->target->isa->abort)(me->target, e)
1.2 timbl 52:
1.59 frystyk 53: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 54:
55: /* Final states have negative value */
1.59 frystyk 56: typedef enum _HTTPState {
1.81 frystyk 57: HTTP_RETRY = -4,
1.71 frystyk 58: HTTP_ERROR = -3,
59: HTTP_NO_DATA = -2,
60: HTTP_GOT_DATA = -1,
61: HTTP_BEGIN = 0,
62: HTTP_NEED_CONNECTION,
63: HTTP_NEED_REQUEST,
1.111.2.1! frystyk 64: HTTP_PERM_REDIRECT,
! 65: HTTP_TEMP_REDIRECT,
1.91 frystyk 66: HTTP_NOT_MODIFIED,
1.71 frystyk 67: HTTP_AA
1.59 frystyk 68: } HTTPState;
1.55 frystyk 69:
1.94 frystyk 70: /* This is the context structure for the this module */
1.55 frystyk 71: typedef struct _http_info {
1.81 frystyk 72: HTTPState state; /* Current State of the connection */
73: HTTPState next; /* Next state */
1.55 frystyk 74: } http_info;
75:
1.88 frystyk 76: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 77:
1.71 frystyk 78: struct _HTStream {
79: CONST HTStreamClass * isa;
80: HTStream * target;
81: HTRequest * request;
82: http_info * http;
83: HTSocketEOL state;
84: BOOL transparent;
1.81 frystyk 85: char * version; /* Should we save this? */
1.71 frystyk 86: int status;
1.81 frystyk 87: char * reason;
1.71 frystyk 88: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 89: int buflen;
1.71 frystyk 90: };
1.21 luotonen 91:
1.71 frystyk 92: /* ------------------------------------------------------------------------- */
93: /* Help Functions */
94: /* ------------------------------------------------------------------------- */
1.21 luotonen 95:
1.94 frystyk 96: /* HTTPCleanup
97: ** -----------
1.55 frystyk 98: ** This function closes the connection and frees memory.
1.94 frystyk 99: ** Returns YES on OK, else NO
1.1 timbl 100: */
1.94 frystyk 101: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 102: {
1.94 frystyk 103: HTNet *net = req->net;
104: http_info *http = (http_info *) net->context;
1.80 frystyk 105:
1.94 frystyk 106: /* Free stream with data TO network */
1.111.2.1! frystyk 107: if (HTRequest_isDestination(req))
! 108: HTRequest_removeDestination(req);
! 109: else if (req->input_stream) {
1.94 frystyk 110: if (status == HT_INTERRUPTED)
111: (*req->input_stream->isa->abort)(req->input_stream, NULL);
112: else
113: (*req->input_stream->isa->_free)(req->input_stream);
1.104 frystyk 114: req->input_stream = NULL;
1.94 frystyk 115: }
1.88 frystyk 116:
1.111.2.1! frystyk 117: /* Free user part of stream pipe if error */
! 118: if (!net->target && req->output_stream)
! 119: (*req->output_stream->isa->abort)(req->output_stream, NULL);
! 120:
1.94 frystyk 121: /* Remove the request object and our own context structure for http */
1.111.2.1! frystyk 122: HTNet_delete(net, req->internal ? HT_IGNORE : status);
1.94 frystyk 123: FREE(http);
124: return YES;
1.55 frystyk 125: }
126:
1.71 frystyk 127: /*
128: ** This is a big switch handling all HTTP return codes. It puts in any
129: ** appropiate error message and decides whether we should expect data
1.78 frystyk 130: ** or not.
1.55 frystyk 131: */
1.100 frystyk 132: PRIVATE void HTTPNextState (HTStream * me)
1.55 frystyk 133: {
1.71 frystyk 134: switch (me->status) {
135:
1.78 frystyk 136: case 0: /* 0.9 response */
137: case 200:
1.111.2.1! frystyk 138: me->http->next = HTTP_GOT_DATA;
! 139: break;
! 140:
1.78 frystyk 141: case 201:
1.111.2.1! frystyk 142: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
! 143: me->reason, (int) strlen(me->reason),
! 144: "HTTPNextState");
! 145: me->http->next = HTTP_GOT_DATA;
! 146: break;
! 147:
1.78 frystyk 148: case 202:
1.111.2.1! frystyk 149: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
! 150: me->reason, (int) strlen(me->reason),
! 151: "HTTPNextState");
! 152: me->http->next = HTTP_GOT_DATA;
! 153: break;
! 154:
1.78 frystyk 155: case 203:
1.111.2.1! frystyk 156: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
! 157: me->reason, (int) strlen(me->reason),
! 158: "HTTPNextState");
1.81 frystyk 159: me->http->next = HTTP_GOT_DATA;
1.71 frystyk 160: break;
1.78 frystyk 161:
162: case 204: /* No Response */
1.111.2.1! frystyk 163: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
! 164: me->reason, (int) strlen(me->reason),
! 165: "HTTPNextState");
1.81 frystyk 166: me->http->next = HTTP_NO_DATA;
1.71 frystyk 167: break;
1.78 frystyk 168:
1.71 frystyk 169: case 301: /* Moved */
1.111.2.1! frystyk 170: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
! 171: me->reason, (int) strlen(me->reason),
! 172: "HTTPNextState");
! 173: me->http->next = HTTP_PERM_REDIRECT;
! 174: break;
! 175:
1.71 frystyk 176: case 302: /* Found */
1.111.2.1! frystyk 177: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
! 178: me->reason, (int) strlen(me->reason),
! 179: "HTTPNextState");
! 180: me->http->next = HTTP_TEMP_REDIRECT;
1.71 frystyk 181: break;
1.55 frystyk 182:
1.71 frystyk 183: case 303: /* Method */
1.107 frystyk 184: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
185: me->reason, (int) strlen(me->reason),
186: "HTTPNextState");
1.81 frystyk 187: me->http->next = HTTP_ERROR;
1.71 frystyk 188: break;
1.91 frystyk 189:
190: case 304: /* Not Modified */
1.111.2.1! frystyk 191: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_MODIFIED,
! 192: me->reason, (int) strlen(me->reason),
! 193: "HTTPNextState");
1.91 frystyk 194: me->http->next = HTTP_NOT_MODIFIED;
195: break;
1.55 frystyk 196:
1.78 frystyk 197: case 400: /* Bad Request */
1.104 frystyk 198: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 199: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 200: me->http->next = HTTP_ERROR;
1.71 frystyk 201: break;
1.70 howcome 202:
1.71 frystyk 203: case 401:
1.104 frystyk 204: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 205: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 206: me->http->next = HTTP_AA;
1.71 frystyk 207: break;
208:
209: case 402: /* Payment required */
1.104 frystyk 210: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 211: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 212: me->http->next = HTTP_ERROR;
1.71 frystyk 213: break;
1.55 frystyk 214:
1.71 frystyk 215: case 403: /* Forbidden */
1.104 frystyk 216: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 217: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 218: me->http->next = HTTP_ERROR;
1.71 frystyk 219: break;
1.55 frystyk 220:
1.71 frystyk 221: case 404: /* Not Found */
1.104 frystyk 222: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
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;
226:
1.78 frystyk 227: case 405: /* Not Allowed */
1.104 frystyk 228: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 229: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 230: me->http->next = HTTP_ERROR;
1.78 frystyk 231: break;
232:
233: case 406: /* None Acceptable */
1.104 frystyk 234: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 235: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 236: me->http->next = HTTP_ERROR;
1.78 frystyk 237: break;
238:
239: case 407: /* Proxy Authentication Required */
1.104 frystyk 240: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PROXY,
1.100 frystyk 241: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 242: me->http->next = HTTP_ERROR;
1.78 frystyk 243: break;
244:
245: case 408: /* Request Timeout */
1.104 frystyk 246: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 247: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 248: me->http->next = HTTP_ERROR;
1.78 frystyk 249: break;
250:
1.71 frystyk 251: case 500:
1.104 frystyk 252: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
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:
1.71 frystyk 257: case 501:
1.104 frystyk 258: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
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 502:
1.104 frystyk 264: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 265: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 266: me->http->next = HTTP_ERROR;
1.78 frystyk 267: break;
268:
269: case 503:
1.104 frystyk 270: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 271: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 272:
273: /* If Retry-After header is found then return HT_RETRY else HT_ERROR */
274: if (me->request->retry_after)
275: me->http->next = HTTP_RETRY;
276: else
277: me->http->next = HTTP_ERROR;
1.78 frystyk 278: break;
279:
280: case 504:
1.104 frystyk 281: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 282: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 283: me->http->next = HTTP_ERROR;
1.71 frystyk 284: break;
1.78 frystyk 285:
1.71 frystyk 286: default: /* bad number */
1.104 frystyk 287: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 288: (void *) me->buffer, me->buflen, "HTTPNextState");
1.81 frystyk 289: me->http->next = HTTP_ERROR;
1.71 frystyk 290: break;
1.55 frystyk 291: }
292: }
293:
1.71 frystyk 294: /* ------------------------------------------------------------------------- */
295: /* HTTP Status Line Stream */
296: /* ------------------------------------------------------------------------- */
1.55 frystyk 297:
1.71 frystyk 298: /*
1.80 frystyk 299: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 300: ** then create a MIME-stream, else create a Guess stream to find out
301: ** what the 0.9 server is sending. We need to copy the buffer as we don't
302: ** know if we can modify the contents or not.
1.78 frystyk 303: **
304: ** Stream handling is a function of the status code returned from the
305: ** server:
306: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 307: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 308: **
309: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 310: */
1.100 frystyk 311: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 312: {
1.71 frystyk 313: HTRequest *req = me->request;
1.95 frystyk 314: HTNet *net = req->net;
1.80 frystyk 315: if (me->target) {
316: int status = PUTBLOCK(me->buffer, me->buflen);
317: if (status == HT_OK)
318: me->transparent = YES;
319: return status;
1.88 frystyk 320: } else if (HTRequest_isSource(req) && !req->output_stream) {
321: /*
322: ** We need to wait for the destinations to get ready
323: */
324: return HT_WOULD_BLOCK;
1.80 frystyk 325: }
1.88 frystyk 326:
1.81 frystyk 327: if (strncasecomp(me->buffer, "http/", 5)) {
1.80 frystyk 328: int status;
1.104 frystyk 329: HTRequest_addError(req, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 330: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.105 frystyk 331: me->target = HTStreamStack(WWW_UNKNOWN, req->output_format,
332: req->output_stream, req, NO);
1.88 frystyk 333: me->http->next = HTTP_GOT_DATA;
1.80 frystyk 334: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
335: me->transparent = YES;
1.98 frystyk 336: HTDNS_setServerVersion(net->dns, HTTP_09);
1.80 frystyk 337: return status;
338: } else {
1.81 frystyk 339: char *ptr = me->buffer+5; /* Skip the HTTP part */
340: me->version = HTNextField(&ptr);
1.95 frystyk 341:
342: /* here we want to find out when to use persistent connection */
1.98 frystyk 343: HTDNS_setServerVersion(net->dns, HTTP_10);
1.95 frystyk 344:
1.81 frystyk 345: me->status = atoi(HTNextField(&ptr));
346: me->reason = ptr;
347: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
348: *ptr = '0円';
349: else if ((ptr = strchr(me->reason, '\n')) != NULL)
350: *ptr = '0円';
351:
352: /* Set up the streams */
1.111.2.1! frystyk 353: if (me->status==200) {
1.80 frystyk 354: HTStream *s;
1.103 frystyk 355: me->target = HTStreamStack(WWW_MIME, req->output_format,
356: req->output_stream, req, NO);
1.80 frystyk 357:
1.103 frystyk 358: /* howcome: test for return value from HTCacheWriter 12/1/95 */
359: if (req->method==METHOD_GET && HTCache_isEnabled() &&
360: (s = HTCacheWriter(req, NULL, WWW_MIME, req->output_format,
361: req->output_stream))) {
362: me->target = HTTee(me->target, s);
363: }
1.94 frystyk 364: } else if (req->debug_stream) {
365: me->target = HTStreamStack(WWW_MIME, req->debug_format,
366: req->debug_stream, req, NO);
1.71 frystyk 367: } else {
1.103 frystyk 368: /* We still need to parser the MIME part */
1.109 frystyk 369: me->target = HTStreamStack(WWW_MIME, WWW_DEBUG, req->debug_stream,
370: req, NO);
1.56 frystyk 371: }
372: }
1.105 frystyk 373: if (!me->target) me->target = HTBlackHole();
1.81 frystyk 374: HTTPNextState(me); /* Get next state */
1.80 frystyk 375: me->transparent = YES;
376: return HT_OK;
1.71 frystyk 377: }
1.56 frystyk 378:
1.80 frystyk 379: /*
380: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
381: ** is found
382: */
1.100 frystyk 383: PRIVATE int HTTPStatus_put_block (HTStream * me, CONST char * b, int l)
1.71 frystyk 384: {
1.80 frystyk 385: while (!me->transparent && l-- > 0) {
386: int status;
387: if (me->target) {
388: if ((status = stream_pipe(me)) != HT_OK)
389: return status;
390: } else {
391: *(me->buffer+me->buflen++) = *b;
392: if (me->state == EOL_FCR) {
393: if (*b == LF) { /* Line found */
394: if ((status = stream_pipe(me)) != HT_OK)
395: return status;
396: } else {
397: me->state = EOL_BEGIN;
398: }
399: } else if (*b == CR) {
400: me->state = EOL_FCR;
401: } else if (*b == LF) {
402: if ((status = stream_pipe(me)) != HT_OK)
403: return status;
1.71 frystyk 404: } else {
1.80 frystyk 405: if (me->buflen >= MAX_STATUS_LEN) {
406: if ((status = stream_pipe(me)) != HT_OK)
407: return status;
408: }
1.71 frystyk 409: }
1.80 frystyk 410: b++;
1.71 frystyk 411: }
1.56 frystyk 412: }
1.99 frystyk 413: if (l > 0) return PUTBLOCK(b, l);
414: return HT_OK;
1.56 frystyk 415: }
416:
1.100 frystyk 417: PRIVATE int HTTPStatus_put_string (HTStream * me, CONST char * s)
1.71 frystyk 418: {
1.80 frystyk 419: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 420: }
1.56 frystyk 421:
1.100 frystyk 422: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 423: {
1.80 frystyk 424: return HTTPStatus_put_block(me, &c, 1);
425: }
426:
1.100 frystyk 427: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 428: {
429: return (*me->target->isa->flush)(me->target);
1.71 frystyk 430: }
431:
1.100 frystyk 432: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 433: {
1.87 frystyk 434: int status = HT_OK;
435: if (me->target) {
436: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
437: return HT_WOULD_BLOCK;
438: }
1.71 frystyk 439: free(me);
1.100 frystyk 440: return status;
1.71 frystyk 441: }
442:
1.104 frystyk 443: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 444: {
445: if (me->target)
1.74 frystyk 446: ABORT_TARGET;
1.71 frystyk 447: free(me);
1.74 frystyk 448: if (PROT_TRACE)
1.102 frystyk 449: TTYPrint(TDEST, "HTTPStatus.. ABORTING...\n");
1.80 frystyk 450: return HT_ERROR;
1.71 frystyk 451: }
452:
453: /* HTTPStatus Stream
454: ** -----------------
455: */
456: PRIVATE CONST HTStreamClass HTTPStatusClass =
457: {
458: "HTTPStatus",
1.80 frystyk 459: HTTPStatus_flush,
1.71 frystyk 460: HTTPStatus_free,
461: HTTPStatus_abort,
462: HTTPStatus_put_character,
463: HTTPStatus_put_string,
464: HTTPStatus_put_block
465: };
466:
1.100 frystyk 467: PRIVATE HTStream * HTTPStatus_new (HTRequest * request, http_info * http)
1.71 frystyk 468: {
469: HTStream * me = (HTStream *) calloc(1, sizeof(HTStream));
470: if (!me) outofmem(__FILE__, "HTTPStatus_new");
471: me->isa = &HTTPStatusClass;
472: me->request = request;
473: me->http = http;
474: me->state = EOL_BEGIN;
475: return me;
476: }
477:
478: /* ------------------------------------------------------------------------- */
479:
480: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 481: ** ==============================
482: **
483: ** Given a hypertext address, this routine loads a document.
484: **
485: ** On entry,
486: ** request This is the request structure
1.94 frystyk 487: ** returns HT_ERROR Error has occured in call back
488: ** HT_OK Call back was OK
1.55 frystyk 489: */
1.94 frystyk 490: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 491: {
1.71 frystyk 492: int status = HT_ERROR;
1.94 frystyk 493: HTNet *net = request->net; /* Generic protocol information */
1.55 frystyk 494: http_info *http; /* Specific protocol information */
1.111.2.1! frystyk 495: HTParentAnchor *anchor = HTRequest_anchor(request);
! 496:
1.94 frystyk 497: /*
498: ** Initiate a new http structure and bind to request structure
499: ** This is actually state HTTP_BEGIN, but it can't be in the state
500: ** machine as we need the structure first.
501: */
502: if (ops == FD_NONE) {
1.102 frystyk 503: if (PROT_TRACE) TTYPrint(TDEST, "HTTP........ Looking for `%s\'\n",
1.111.2.1! frystyk 504: HTAnchor_physical(anchor));
1.71 frystyk 505: if ((http = (http_info *) calloc(1, sizeof(http_info))) == NULL)
506: outofmem(__FILE__, "HTLoadHTTP");
507: http->state = HTTP_BEGIN;
1.85 frystyk 508: http->next = HTTP_ERROR;
1.94 frystyk 509: net->context = http;
1.98 frystyk 510: } else if (ops == FD_CLOSE) { /* Interrupted */
1.111.2.1! frystyk 511: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
! 512: NULL, 0, "HTLoadHTTP");
! 513: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 514: return HT_OK;
515: } else
516: http = (http_info *) net->context; /* Get existing copy */
1.71 frystyk 517:
518: /* Now jump into the machine. We know the state from the previous run */
519: while (1) {
520: switch (http->state) {
521: case HTTP_BEGIN:
522: /*
523: ** Compose authorization information (this was moved here
524: ** from after the making of the connection so that the connection
525: ** wouldn't have to wait while prompting username and password
526: ** from the user). -- AL 13.10.93
527: */
528: HTAA_composeAuth(request);
529: if (PROT_TRACE) {
530: if (request->authorization)
1.102 frystyk 531: TTYPrint(TDEST, "HTTP........ Sending Authorization: %s\n",
1.71 frystyk 532: request->authorization);
533: else
1.102 frystyk 534: TTYPrint(TDEST,
1.71 frystyk 535: "HTTP........ Not sending authorization (yet)\n");
536: }
537: http->state = HTTP_NEED_CONNECTION;
538: break;
539:
540: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
1.111.2.1! frystyk 541: status = HTDoConnect(net, HTAnchor_physical(anchor),
1.95 frystyk 542: HTTP_PORT);
1.80 frystyk 543: if (status == HT_OK) {
1.95 frystyk 544:
545: /* Check the protocol class */
1.97 frystyk 546: char *s_class = HTDNS_serverClass(net->dns);
547: if (s_class && strcasecomp(s_class, "http")) {
1.104 frystyk 548: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1.95 frystyk 549: NULL, 0, "HTLoadHTTP");
550: http->state = HTTP_ERROR;
551: break;
552: }
553: HTDNS_setServerClass(net->dns, "http");
554:
1.71 frystyk 555: if (PROT_TRACE)
1.102 frystyk 556: TTYPrint(TDEST, "HTTP........ Connected, socket %d\n",
1.94 frystyk 557: net->sockfd);
1.80 frystyk 558:
1.88 frystyk 559: /* Set up stream TO network */
560: request->input_stream =
1.100 frystyk 561: HTTPRequest_new(request, HTBufWriter_new(net, YES, 512));
1.88 frystyk 562:
563: /*
564: ** Set up concurrent read/write if this request isn't the
565: ** source for a PUT or POST. As source we don't start reading
566: ** before all destinations are ready. If destination then
567: ** register the input stream and get ready for read
568: */
1.111.2.1! frystyk 569: if (HTRequest_isDestination(request)) {
1.94 frystyk 570: HTEvent_Register(net->sockfd, request, (SockOps) FD_READ,
571: HTLoadHTTP, net->priority);
1.88 frystyk 572: HTRequest_linkDestination(request);
573: }
574:
575: /* Set up stream FROM network and corresponding read buffer */
1.94 frystyk 576: net->isoc = HTInputSocket_new(net->sockfd);
1.105 frystyk 577: net->target = HTTPStatus_new(request, http);
1.111.2.1! frystyk 578:
1.71 frystyk 579: http->state = HTTP_NEED_REQUEST;
1.96 frystyk 580: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
1.94 frystyk 581: return HT_OK;
1.71 frystyk 582: else
583: http->state = HTTP_ERROR; /* Error or interrupt */
584: break;
585:
1.87 frystyk 586: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 587: case HTTP_NEED_REQUEST:
1.94 frystyk 588: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 589: if (HTRequest_isDestination(request)) {
1.94 frystyk 590: HTNet *srcnet = request->source->net;
1.111.2.1! frystyk 591: if (srcnet) {
! 592: HTEvent_Register(srcnet->sockfd, request->source,
! 593: (SockOps) FD_READ,
! 594: srcnet->cbf, srcnet->priority);
! 595: HTEvent_UnRegister(net->sockfd, FD_WRITE);
! 596: }
1.94 frystyk 597: return HT_OK;
1.80 frystyk 598: }
1.101 frystyk 599: status = request->PostCallback ?
600: request->PostCallback(request, request->input_stream) :
1.88 frystyk 601: (*request->input_stream->isa->flush)(request->input_stream);
1.71 frystyk 602: if (status == HT_WOULD_BLOCK)
1.94 frystyk 603: return HT_OK;
604: else
605: ops = FD_READ; /* Trick to ensure that we do READ */
606: } else if (ops == FD_READ) {
1.98 frystyk 607: status = HTSocketRead(request, net);
1.80 frystyk 608: if (status == HT_WOULD_BLOCK)
1.94 frystyk 609: return HT_OK;
610: else if (status == HT_LOADED)
611: http->state = http->next; /* Jump to next state */
612: else
613: http->state = HTTP_ERROR;
1.90 frystyk 614: } else {
1.78 frystyk 615: http->state = HTTP_ERROR;
1.90 frystyk 616: }
1.71 frystyk 617: break;
1.80 frystyk 618:
1.91 frystyk 619: case HTTP_NOT_MODIFIED:
620: http->state = HTTP_ERROR;
621: break;
622:
1.111.2.1! frystyk 623: case HTTP_PERM_REDIRECT:
! 624: if (HTRequest_isPostWeb(request)) {
! 625: if (HTRequest_isDestination(request)) {
! 626: HTLink *link =
! 627: HTAnchor_findLink((HTAnchor *) request->source->anchor,
! 628: (HTAnchor *) anchor);
! 629: HTLink_setResult(link, HT_LINK_ERROR);
! 630: }
1.88 frystyk 631: HTRequest_killPostWeb(request);
1.111.2.1! frystyk 632: }
! 633: HTTPCleanup(request, HT_PERM_REDIRECT);
! 634: return HT_OK;
! 635: break;
1.88 frystyk 636:
1.111.2.1! frystyk 637:
! 638: case HTTP_TEMP_REDIRECT:
! 639: if (HTRequest_isPostWeb(request)) {
! 640: if (HTRequest_isDestination(request)) {
! 641: HTLink *link =
! 642: HTAnchor_findLink((HTAnchor *) request->source->anchor,
! 643: (HTAnchor *) anchor);
! 644: HTLink_setResult(link, HT_LINK_ERROR);
1.58 frystyk 645: }
1.111.2.1! frystyk 646: HTRequest_killPostWeb(request);
1.71 frystyk 647: }
1.111.2.1! frystyk 648: HTTPCleanup(request, HT_TEMP_REDIRECT);
! 649: return HT_OK;
1.71 frystyk 650: break;
1.88 frystyk 651:
1.111.2.1! frystyk 652: case HTTP_AA:
! 653: if (HTRequest_isPostWeb(request)) {
! 654: if (HTRequest_isDestination(request)) {
! 655: HTLink *link =
! 656: HTAnchor_findLink((HTAnchor *) request->source->anchor,
! 657: (HTAnchor *) anchor);
! 658: HTLink_setResult(link, HT_LINK_ERROR);
1.88 frystyk 659: }
1.111.2.1! frystyk 660: HTRequest_killPostWeb(request);
1.71 frystyk 661: }
1.111.2.1! frystyk 662: HTTPCleanup(request, HT_NO_ACCESS);
! 663: return HT_OK;
1.71 frystyk 664: break;
1.111.2.1! frystyk 665:
1.71 frystyk 666: case HTTP_GOT_DATA:
1.88 frystyk 667: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 668: if (HTRequest_isDestination(request)) {
669: HTLink *link =
670: HTAnchor_findLink((HTAnchor *) request->source->anchor,
1.111.2.1! frystyk 671: (HTAnchor *) anchor);
1.109 frystyk 672: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 673: }
1.111.2.1! frystyk 674: }
! 675: HTTPCleanup(request, HT_LOADED);
1.94 frystyk 676: return HT_OK;
1.71 frystyk 677: break;
678:
679: case HTTP_NO_DATA:
1.88 frystyk 680: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 681: if (HTRequest_isDestination(request)) {
682: HTLink *link =
683: HTAnchor_findLink((HTAnchor *) request->source->anchor,
1.111.2.1! frystyk 684: (HTAnchor *) anchor);
1.109 frystyk 685: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 686: }
1.111.2.1! frystyk 687: }
! 688: HTTPCleanup(request, HT_NO_DATA);
1.94 frystyk 689: return HT_OK;
1.71 frystyk 690: break;
1.80 frystyk 691:
1.94 frystyk 692: case HTTP_RETRY:
1.88 frystyk 693: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 694: if (HTRequest_isDestination(request)) {
695: HTLink *link =
696: HTAnchor_findLink((HTAnchor*) request->source->anchor,
1.111.2.1! frystyk 697: (HTAnchor*) anchor);
1.109 frystyk 698: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 699: }
1.111.2.1! frystyk 700: HTRequest_killPostWeb(request);
! 701: }
! 702: HTTPCleanup(request, HT_RETRY);
1.94 frystyk 703: return HT_OK;
1.81 frystyk 704: break;
705:
1.71 frystyk 706: case HTTP_ERROR:
1.88 frystyk 707: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 708: if (HTRequest_isDestination(request)) {
709: HTLink *link =
710: HTAnchor_findLink((HTAnchor *) request->source->anchor,
1.111.2.1! frystyk 711: (HTAnchor *) anchor);
1.109 frystyk 712: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 713: }
1.111.2.1! frystyk 714: HTRequest_killPostWeb(request);
! 715: }
! 716: HTTPCleanup(request, HT_ERROR);
1.94 frystyk 717: return HT_OK;
1.71 frystyk 718: break;
719: }
720: } /* End of while(1) */
721: }
1.88 frystyk 722:
1.21 luotonen 723:
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