Annotation of libwww/Library/src/HTTP.c, revision 1.134
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.
1.134 ! frystyk 6: ** @(#) $Id: HTTP.c,v 1.133 1996/08/19 18:31:09 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 {
1.134 ! frystyk 48: HTTP_ERROR = -2,
! 49: HTTP_OK = -1,
1.71 frystyk 50: HTTP_BEGIN = 0,
51: HTTP_NEED_CONNECTION,
1.134 ! frystyk 52: HTTP_NEED_REQUEST
1.59 frystyk 53: } HTTPState;
1.55 frystyk 54:
1.94 frystyk 55: /* This is the context structure for the this module */
1.55 frystyk 56: typedef struct _http_info {
1.81 frystyk 57: HTTPState state; /* Current State of the connection */
58: HTTPState next; /* Next state */
1.134 ! frystyk 59: int result; /* Result to report to the after filter */
1.55 frystyk 60: } http_info;
61:
1.88 frystyk 62: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 63:
1.71 frystyk 64: struct _HTStream {
1.119 frystyk 65: const HTStreamClass * isa;
1.71 frystyk 66: HTStream * target;
67: HTRequest * request;
68: http_info * http;
1.121 frystyk 69: HTEOLState state;
1.71 frystyk 70: BOOL transparent;
1.81 frystyk 71: char * version; /* Should we save this? */
1.71 frystyk 72: int status;
1.81 frystyk 73: char * reason;
1.71 frystyk 74: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 75: int buflen;
1.71 frystyk 76: };
1.21 luotonen 77:
1.123 frystyk 78: struct _HTInputStream {
79: const HTInputStreamClass * isa;
80: };
81:
1.71 frystyk 82: /* ------------------------------------------------------------------------- */
83: /* Help Functions */
84: /* ------------------------------------------------------------------------- */
1.21 luotonen 85:
1.94 frystyk 86: /* HTTPCleanup
87: ** -----------
1.55 frystyk 88: ** This function closes the connection and frees memory.
1.94 frystyk 89: ** Returns YES on OK, else NO
1.1 timbl 90: */
1.94 frystyk 91: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 92: {
1.126 frystyk 93: HTNet * net = HTRequest_net(req);
94: http_info * http = (http_info *) HTNet_context(net);
95: HTStream * input = HTRequest_inputStream(req);
1.80 frystyk 96:
1.94 frystyk 97: /* Free stream with data TO network */
1.112 frystyk 98: if (HTRequest_isDestination(req))
99: HTRequest_removeDestination(req);
1.126 frystyk 100: else if (input) {
1.94 frystyk 101: if (status == HT_INTERRUPTED)
1.126 frystyk 102: (*input->isa->abort)(input, NULL);
1.94 frystyk 103: else
1.126 frystyk 104: (*input->isa->_free)(input);
105: HTRequest_setInputStream(req, NULL);
1.94 frystyk 106: }
1.88 frystyk 107:
1.94 frystyk 108: /* Remove the request object and our own context structure for http */
1.133 frystyk 109: HT_FREE(http);
110: HTNet_setContext(net, NULL);
1.131 frystyk 111: HTNet_delete(net, status);
1.94 frystyk 112: return YES;
1.55 frystyk 113: }
114:
1.71 frystyk 115: /*
1.130 frystyk 116: ** Informational 1xx codes are handled separately
117: ** Returns YES if we should stop, NO if we should continue
1.55 frystyk 118: */
1.130 frystyk 119: PRIVATE BOOL HTTPInformation (HTStream * me)
1.55 frystyk 120: {
1.130 frystyk 121: BOOL result = NO;
1.71 frystyk 122: switch (me->status) {
123:
1.130 frystyk 124: case 101:
125: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_SWITCHING,
1.127 frystyk 126: me->reason, (int) strlen(me->reason),
1.130 frystyk 127: "HTTPInformation");
128:
129: /* Here we should swap to new protocol */
130:
131: result = YES;
1.127 frystyk 132: break;
133:
1.130 frystyk 134: default:
135: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CONTINUE,
1.127 frystyk 136: me->reason, (int) strlen(me->reason),
1.130 frystyk 137: "HTTPInformation");
1.127 frystyk 138: break;
1.130 frystyk 139: }
140: return result;
141: }
142:
143: /*
144: ** This is a big switch handling all HTTP return codes. It puts in any
145: ** appropiate error message and decides whether we should expect data
146: ** or not.
147: */
148: PRIVATE void HTTPNextState (HTStream * me)
149: {
1.134 ! frystyk 150: http_info * http = me->http;
1.130 frystyk 151: switch (me->status) {
1.127 frystyk 152:
1.78 frystyk 153: case 0: /* 0.9 response */
1.127 frystyk 154: case 200: /* OK */
155: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_OK,
156: me->reason, (int) strlen(me->reason),
157: "HTTPNextState");
1.134 ! frystyk 158: http->next = HTTP_OK;
! 159: http->result = HT_LOADED;
1.112 frystyk 160: break;
161:
1.127 frystyk 162: case 201: /* Created */
1.112 frystyk 163: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_CREATED,
164: me->reason, (int) strlen(me->reason),
165: "HTTPNextState");
1.134 ! frystyk 166: http->next = HTTP_OK;
! 167: http->result = HT_CREATED;
1.112 frystyk 168: break;
169:
1.127 frystyk 170: case 202: /* Accepted */
1.112 frystyk 171: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_ACCEPTED,
172: me->reason, (int) strlen(me->reason),
173: "HTTPNextState");
1.134 ! frystyk 174: http->next = HTTP_OK;
! 175: http->result = HT_ACCEPTED;
1.112 frystyk 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");
1.134 ! frystyk 182: http->next = HTTP_OK;
! 183: http->result = HT_LOADED;
1.71 frystyk 184: break;
1.78 frystyk 185:
186: case 204: /* No Response */
1.112 frystyk 187: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NO_CONTENT,
188: me->reason, (int) strlen(me->reason),
189: "HTTPNextState");
1.134 ! frystyk 190: http->next = HTTP_OK;
! 191: http->result = HT_NO_DATA;
! 192: break;
! 193:
! 194: case 205: /* Reset Content */
! 195: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_RESET,
! 196: me->reason, (int) strlen(me->reason),
! 197: "HTTPNextState");
! 198: http->next = HTTP_OK;
! 199: http->result = HT_RESET_CONTENT;
! 200: break;
! 201:
! 202: case 206: /* Partial Content */
! 203: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_PARTIAL,
! 204: me->reason, (int) strlen(me->reason),
! 205: "HTTPNextState");
! 206: http->next = HTTP_OK;
! 207: http->result = HT_PARTIAL_CONTENT;
! 208: break;
! 209:
! 210: case 300: /* Multiple Choices */
! 211: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MULTIPLE,
! 212: me->reason, (int) strlen(me->reason),
! 213: "HTTPNextState");
! 214: http->next = HTTP_OK;
! 215: http->result = HT_LOADED;
1.71 frystyk 216: break;
1.78 frystyk 217:
1.71 frystyk 218: case 301: /* Moved */
1.112 frystyk 219: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_MOVED,
220: me->reason, (int) strlen(me->reason),
221: "HTTPNextState");
1.134 ! frystyk 222: http->next = HTTP_ERROR;
! 223: http->result = HT_PERM_REDIRECT;
1.112 frystyk 224: break;
225:
1.71 frystyk 226: case 302: /* Found */
1.112 frystyk 227: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_FOUND,
228: me->reason, (int) strlen(me->reason),
229: "HTTPNextState");
1.134 ! frystyk 230: http->next = HTTP_ERROR;
! 231: http->result = HT_TEMP_REDIRECT;
1.71 frystyk 232: break;
1.55 frystyk 233:
1.71 frystyk 234: case 303: /* Method */
1.107 frystyk 235: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
236: me->reason, (int) strlen(me->reason),
237: "HTTPNextState");
1.134 ! frystyk 238: http->next = HTTP_ERROR;
! 239: http->result = HT_SEE_OTHER;
1.71 frystyk 240: break;
1.91 frystyk 241:
242: case 304: /* Not Modified */
1.131 frystyk 243: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_NOT_MODIFIED,
1.112 frystyk 244: me->reason, (int) strlen(me->reason),
245: "HTTPNextState");
1.134 ! frystyk 246: http->next = HTTP_ERROR;
! 247: http->result = HT_NOT_MODIFIED;
! 248: break;
! 249:
! 250: case 305: /* Use proxy */
! 251: HTRequest_addError(me->request, ERR_INFO, NO, HTERR_USE_PROXY,
! 252: me->reason, (int) strlen(me->reason),
! 253: "HTTPNextState");
! 254: http->next = HTTP_ERROR;
! 255: http->result = HT_USE_PROXY;
1.91 frystyk 256: break;
1.55 frystyk 257:
1.78 frystyk 258: case 400: /* Bad Request */
1.104 frystyk 259: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 260: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 261: http->next = HTTP_ERROR;
! 262: http->result = HT_ERROR;
1.71 frystyk 263: break;
1.70 howcome 264:
1.71 frystyk 265: case 401:
1.104 frystyk 266: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 267: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 268: http->next = HTTP_ERROR;
! 269: http->result = HT_NO_ACCESS;
1.71 frystyk 270: break;
271:
272: case 402: /* Payment required */
1.104 frystyk 273: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 274: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 275: http->next = HTTP_ERROR;
! 276: http->result = HT_ERROR;
1.71 frystyk 277: break;
1.55 frystyk 278:
1.71 frystyk 279: case 403: /* Forbidden */
1.104 frystyk 280: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 281: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 282: http->next = HTTP_ERROR;
! 283: http->result = HT_FORBIDDEN;
1.71 frystyk 284: break;
1.55 frystyk 285:
1.71 frystyk 286: case 404: /* Not Found */
1.104 frystyk 287: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 288: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 289: http->next = HTTP_ERROR;
! 290: http->result = HT_ERROR;
1.71 frystyk 291: break;
292:
1.78 frystyk 293: case 405: /* Not Allowed */
1.104 frystyk 294: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 295: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 296: http->next = HTTP_ERROR;
! 297: http->result = HT_ERROR;
1.78 frystyk 298: break;
299:
300: case 406: /* None Acceptable */
1.104 frystyk 301: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 302: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 303: http->next = HTTP_ERROR;
! 304: http->result = HT_NOT_ACCEPTABLE;
1.78 frystyk 305: break;
306:
307: case 407: /* Proxy Authentication Required */
1.127 frystyk 308: HTRequest_addError(me->request, ERR_FATAL, NO,HTERR_PROXY_UNAUTHORIZED,
1.100 frystyk 309: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 310: http->next = HTTP_ERROR;
! 311: http->result = HT_NO_PROXY_ACCESS;
1.78 frystyk 312: break;
313:
314: case 408: /* Request Timeout */
1.104 frystyk 315: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 316: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 317: http->next = HTTP_ERROR;
! 318: http->result = HT_ERROR;
! 319: break;
! 320:
! 321: case 409: /* Conflict */
! 322: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_CONFLICT,
! 323: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 324: http->next = HTTP_ERROR;
! 325: http->result = HT_CONFLICT;
! 326: break;
! 327:
! 328: case 410: /* Gone */
! 329: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GONE,
! 330: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 331: http->next = HTTP_ERROR;
! 332: http->result = HT_ERROR;
! 333: break;
! 334:
! 335: case 411: /* Length Required */
! 336: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_LENGTH_REQUIRED,
! 337: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 338: http->next = HTTP_ERROR;
! 339: http->result = HT_LENGTH_REQUIRED;
! 340: break;
! 341:
! 342: case 412: /* Precondition failed */
! 343: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PRECON_FAILED,
! 344: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 345: http->next = HTTP_ERROR;
! 346: http->result = HT_ERROR;
! 347: break;
! 348:
! 349: case 413: /* Request entity too large */
! 350: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TOO_BIG,
! 351: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 352: http->next = HTTP_ERROR;
! 353: http->result = HT_ERROR;
! 354: break;
! 355:
! 356: case 414: /* Request-URI too long */
! 357: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_URI_TOO_BIG,
! 358: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 359: http->next = HTTP_ERROR;
! 360: http->result = HT_ERROR;
! 361: break;
! 362:
! 363: case 415: /* Unsupported */
! 364: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNSUPPORTED,
! 365: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 366: http->next = HTTP_ERROR;
! 367: http->result = HT_ERROR;
1.78 frystyk 368: break;
369:
1.71 frystyk 370: case 500:
1.104 frystyk 371: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 372: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 373: http->next = HTTP_ERROR;
! 374: http->result = HT_ERROR;
1.78 frystyk 375: break;
376:
1.71 frystyk 377: case 501:
1.104 frystyk 378: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 379: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 380: http->next = HTTP_ERROR;
! 381: http->result = HT_ERROR;
1.78 frystyk 382: break;
383:
384: case 502:
1.104 frystyk 385: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 386: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 387: http->next = HTTP_ERROR;
! 388: http->result = HT_ERROR;
1.78 frystyk 389: break;
390:
391: case 503:
1.104 frystyk 392: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 393: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 394: http->next = HTTP_ERROR;
1.81 frystyk 395:
396: /* If Retry-After header is found then return HT_RETRY else HT_ERROR */
1.126 frystyk 397: if (HTRequest_retryTime(me->request))
1.134 ! frystyk 398: http->result = HT_RETRY;
1.81 frystyk 399: else
1.134 ! frystyk 400: http->result = HT_ERROR;
1.78 frystyk 401: break;
402:
403: case 504:
1.104 frystyk 404: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 405: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.134 ! frystyk 406: http->next = HTTP_ERROR;
! 407: http->result = HT_ERROR;
! 408: break;
! 409:
! 410: case 505: /* Unsupported protocol version */
! 411: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_VERSION,
! 412: me->reason, (int) strlen(me->reason), "HTTPNextState");
! 413: http->next = HTTP_ERROR;
! 414: http->result = HT_BAD_VERSION;
1.71 frystyk 415: break;
1.78 frystyk 416:
1.71 frystyk 417: default: /* bad number */
1.104 frystyk 418: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 419: (void *) me->buffer, me->buflen, "HTTPNextState");
1.134 ! frystyk 420: http->next = HTTP_ERROR;
! 421: http->result = HT_ERROR;
1.71 frystyk 422: break;
1.55 frystyk 423: }
424: }
425:
1.71 frystyk 426: /* ------------------------------------------------------------------------- */
427: /* HTTP Status Line Stream */
428: /* ------------------------------------------------------------------------- */
1.55 frystyk 429:
1.71 frystyk 430: /*
1.80 frystyk 431: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 432: ** then create a MIME-stream, else create a Guess stream to find out
433: ** what the 0.9 server is sending. We need to copy the buffer as we don't
434: ** know if we can modify the contents or not.
1.78 frystyk 435: **
436: ** Stream handling is a function of the status code returned from the
437: ** server:
438: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 439: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 440: **
441: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 442: */
1.100 frystyk 443: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 444: {
1.123 frystyk 445: HTRequest * req = me->request;
446: HTNet * net = req->net;
447: HTHost * host = HTNet_host(net);
1.80 frystyk 448: if (me->target) {
449: int status = PUTBLOCK(me->buffer, me->buflen);
450: if (status == HT_OK)
451: me->transparent = YES;
452: return status;
1.88 frystyk 453: } else if (HTRequest_isSource(req) && !req->output_stream) {
454: /*
455: ** We need to wait for the destinations to get ready
456: */
457: return HT_WOULD_BLOCK;
1.80 frystyk 458: }
1.88 frystyk 459:
1.132 frystyk 460: /*
461: ** Just check for HTTP and not HTTP/ as NCSA server chokes on 1.1 replies
462: ** Thanks to Markku Savela <msa@msa.tte.vtt.fi>
463: */
464: #if 0
1.81 frystyk 465: if (strncasecomp(me->buffer, "http/", 5)) {
1.132 frystyk 466: #else
467: if (strncasecomp(me->buffer, "http", 4)) {
468: #endif
1.80 frystyk 469: int status;
1.104 frystyk 470: HTRequest_addError(req, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 471: (void *) me->buffer, me->buflen, "HTTPStatusStream");
1.105 frystyk 472: me->target = HTStreamStack(WWW_UNKNOWN, req->output_format,
473: req->output_stream, req, NO);
1.134 ! frystyk 474: me->http->next = HTTP_OK;
1.80 frystyk 475: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
476: me->transparent = YES;
1.123 frystyk 477: HTHost_setVersion(host, HTTP_09);
1.80 frystyk 478: return status;
479: } else {
1.133 frystyk 480: char *ptr = me->buffer+4; /* Skip the HTTP part */
1.81 frystyk 481: me->version = HTNextField(&ptr);
1.95 frystyk 482:
1.130 frystyk 483: /* Here we want to find out when to use persistent connection */
1.133 frystyk 484: if (!strncasecomp(me->version, "/1.0", 4)) {
1.128 frystyk 485: if (PROT_TRACE)HTTrace("HTTP Status. This is a HTTP/1.0 server\n");
486: HTHost_setVersion(host, HTTP_10);
1.133 frystyk 487: } else if (!strncasecomp(me->version, "/1.", 3)) { /* 1.x family */
1.128 frystyk 488: HTHost_setVersion(host, HTTP_11);
1.133 frystyk 489: HTNet_setPersistent(net, YES, HT_TP_INTERLEAVE); /* By default */
490: } else {
491: if (PROT_TRACE)HTTrace("HTTP Status. No 1.x version number - treat it as a HTTP/1.0 server\n");
492: HTHost_setVersion(host, HTTP_10);
1.128 frystyk 493: }
1.95 frystyk 494:
1.81 frystyk 495: me->status = atoi(HTNextField(&ptr));
1.133 frystyk 496: /* Kludge to fix the NCSA server version bug */
497: if (me->status == 0) me->status = atoi(me->version);
498:
1.81 frystyk 499: me->reason = ptr;
500: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
501: *ptr = '\0';
502: else if ((ptr = strchr(me->reason, '\n')) != NULL)
503: *ptr = '\0';
504:
1.130 frystyk 505: /*
506: ** If it is a 1xx code then find out what to do and return until we
507: ** get the next code. In the case of Upgrade we may not get back here
508: ** at all. If we are uploading an entity then continue doing that
509: */
510: if (me->status/100 == 1) {
511: if (HTTPInformation(me)) me->transparent = YES;
512: me->buflen = 0;
513: me->state = EOL_BEGIN;
514: return HTMethod_hasEntity(HTRequest_method(req)) ?
515: HT_CONTINUE : HT_OK;
516: }
517:
1.81 frystyk 518: /* Set up the streams */
1.112 frystyk 519: if (me->status==200) {
1.80 frystyk 520: HTStream *s;
1.103 frystyk 521: me->target = HTStreamStack(WWW_MIME, req->output_format,
522: req->output_stream, req, NO);
1.80 frystyk 523:
1.103 frystyk 524: /* howcome: test for return value from HTCacheWriter 12/1/95 */
525: if (req->method==METHOD_GET && HTCache_isEnabled() &&
526: (s = HTCacheWriter(req, NULL, WWW_MIME, req->output_format,
527: req->output_stream))) {
1.113 frystyk 528: me->target = HTTee(me->target, s, NULL);
1.103 frystyk 529: }
1.94 frystyk 530: } else if (req->debug_stream) {
531: me->target = HTStreamStack(WWW_MIME, req->debug_format,
532: req->debug_stream, req, NO);
1.71 frystyk 533: } else {
1.103 frystyk 534: /* We still need to parser the MIME part */
1.114 frystyk 535: me->target = HTStreamStack(WWW_MIME, req->debug_format,
536: req->debug_stream, req, NO);
1.56 frystyk 537: }
1.133 frystyk 538:
539: /*
540: ** As we are getting fresh metainformation in the HTTP response,
541: ** we clear the old metainfomation in order not to mix it with the new
542: ** one. This is particularly important for the content-length and the
543: ** like.
544: */
545: {
546: HTParentAnchor * anchor = HTRequest_anchor(me->request);
547: HTAnchor_clearHeader(anchor);
548: }
549:
1.56 frystyk 550: }
1.113 frystyk 551: if (!me->target) me->target = HTErrorStream();
1.81 frystyk 552: HTTPNextState(me); /* Get next state */
1.80 frystyk 553: me->transparent = YES;
554: return HT_OK;
1.71 frystyk 555: }
1.56 frystyk 556:
1.80 frystyk 557: /*
558: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
559: ** is found
560: */
1.119 frystyk 561: PRIVATE int HTTPStatus_put_block (HTStream * me, const char * b, int l)
1.71 frystyk 562: {
1.80 frystyk 563: while (!me->transparent && l-- > 0) {
564: int status;
565: if (me->target) {
566: if ((status = stream_pipe(me)) != HT_OK)
567: return status;
568: } else {
569: *(me->buffer+me->buflen++) = *b;
570: if (me->state == EOL_FCR) {
571: if (*b == LF) { /* Line found */
572: if ((status = stream_pipe(me)) != HT_OK)
573: return status;
574: } else {
575: me->state = EOL_BEGIN;
576: }
577: } else if (*b == CR) {
578: me->state = EOL_FCR;
579: } else if (*b == LF) {
580: if ((status = stream_pipe(me)) != HT_OK)
581: return status;
1.71 frystyk 582: } else {
1.80 frystyk 583: if (me->buflen >= MAX_STATUS_LEN) {
584: if ((status = stream_pipe(me)) != HT_OK)
585: return status;
586: }
1.71 frystyk 587: }
1.80 frystyk 588: b++;
1.71 frystyk 589: }
1.56 frystyk 590: }
1.99 frystyk 591: if (l > 0) return PUTBLOCK(b, l);
592: return HT_OK;
1.56 frystyk 593: }
594:
1.119 frystyk 595: PRIVATE int HTTPStatus_put_string (HTStream * me, const char * s)
1.71 frystyk 596: {
1.80 frystyk 597: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 598: }
1.56 frystyk 599:
1.100 frystyk 600: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 601: {
1.80 frystyk 602: return HTTPStatus_put_block(me, &c, 1);
603: }
604:
1.100 frystyk 605: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 606: {
607: return (*me->target->isa->flush)(me->target);
1.71 frystyk 608: }
609:
1.100 frystyk 610: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 611: {
1.87 frystyk 612: int status = HT_OK;
613: if (me->target) {
614: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
615: return HT_WOULD_BLOCK;
616: }
1.115 frystyk 617: HT_FREE(me);
1.100 frystyk 618: return status;
1.71 frystyk 619: }
620:
1.104 frystyk 621: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 622: {
623: if (me->target)
1.74 frystyk 624: ABORT_TARGET;
1.115 frystyk 625: HT_FREE(me);
1.74 frystyk 626: if (PROT_TRACE)
1.116 eric 627: HTTrace("HTTPStatus.. ABORTING...\n");
1.80 frystyk 628: return HT_ERROR;
1.71 frystyk 629: }
630:
631: /* HTTPStatus Stream
632: ** -----------------
633: */
1.119 frystyk 634: PRIVATE const HTStreamClass HTTPStatusClass =
1.71 frystyk 635: {
636: "HTTPStatus",
1.80 frystyk 637: HTTPStatus_flush,
1.71 frystyk 638: HTTPStatus_free,
639: HTTPStatus_abort,
640: HTTPStatus_put_character,
641: HTTPStatus_put_string,
642: HTTPStatus_put_block
643: };
644:
1.113 frystyk 645: PUBLIC HTStream * HTTPStatus_new (HTRequest * request,
646: void * param,
647: HTFormat input_format,
648: HTFormat output_format,
649: HTStream * output_stream)
1.71 frystyk 650: {
1.115 frystyk 651: HTStream * me;
652: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
653: HT_OUTOFMEM("HTTPStatus_new");
1.71 frystyk 654: me->isa = &HTTPStatusClass;
1.113 frystyk 655: if (request) {
1.126 frystyk 656: HTNet * net = HTRequest_net(request);
1.125 frystyk 657: /* Get existing copy */
658: http_info * http = (http_info *) HTNet_context(net);
1.113 frystyk 659: me->request = request;
660: me->http = http;
661: http->next = HTTP_ERROR;
662: me->state = EOL_BEGIN;
663: return me;
664: } else
665: return HTErrorStream();
1.71 frystyk 666: }
667:
668: /* ------------------------------------------------------------------------- */
669:
670: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 671: ** ==============================
672: **
673: ** Given a hypertext address, this routine loads a document.
674: **
675: ** On entry,
676: ** request This is the request structure
1.94 frystyk 677: ** returns HT_ERROR Error has occured in call back
678: ** HT_OK Call back was OK
1.55 frystyk 679: */
1.94 frystyk 680: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 681: {
1.71 frystyk 682: int status = HT_ERROR;
1.126 frystyk 683: HTNet * net = HTRequest_net(request); /* Generic protocol information */
1.55 frystyk 684: http_info *http; /* Specific protocol information */
1.112 frystyk 685: HTParentAnchor *anchor = HTRequest_anchor(request);
686:
1.94 frystyk 687: /*
688: ** Initiate a new http structure and bind to request structure
689: ** This is actually state HTTP_BEGIN, but it can't be in the state
690: ** machine as we need the structure first.
691: */
692: if (ops == FD_NONE) {
1.116 eric 693: if (PROT_TRACE) HTTrace("HTTP........ Looking for `%s\'\n",
1.112 frystyk 694: HTAnchor_physical(anchor));
1.133 frystyk 695: if (!net->context) {
696: if ((http = (http_info *) HT_CALLOC(1, sizeof(http_info))) == NULL)
697: HT_OUTOFMEM("HTLoadHTTP");
698: HTNet_setContext(net, http);
699: } else {
700: http = (http_info *) HTNet_context(net); /* Get existing copy */
701: }
1.71 frystyk 702: http->state = HTTP_BEGIN;
1.134 ! frystyk 703: http->next = HTTP_OK;
! 704: http->result = HT_ERROR;
1.98 frystyk 705: } else if (ops == FD_CLOSE) { /* Interrupted */
1.112 frystyk 706: HTRequest_addError(request, ERR_FATAL, NO, HTERR_INTERRUPTED,
707: NULL, 0, "HTLoadHTTP");
708: HTTPCleanup(request, HT_INTERRUPTED);
1.94 frystyk 709: return HT_OK;
710: } else
1.125 frystyk 711: http = (http_info *) HTNet_context(net); /* Get existing copy */
1.71 frystyk 712:
713: /* Now jump into the machine. We know the state from the previous run */
714: while (1) {
715: switch (http->state) {
1.134 ! frystyk 716: case HTTP_BEGIN:
1.129 frystyk 717: http->state = HTTP_NEED_CONNECTION;
1.71 frystyk 718: break;
719:
1.123 frystyk 720: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
721: status = HTDoConnect(net, HTAnchor_physical(anchor), HTTP_PORT);
1.80 frystyk 722: if (status == HT_OK) {
1.123 frystyk 723: /*
724: ** Check the protocol class to see if we have connected to a
725: ** the right class of server, in this case HTTP.
726: */
727: {
728: HTHost * host = HTNet_host(net);
729: char * s_class = HTHost_class(host);
730: if (s_class && strcasecomp(s_class, "http")) {
731: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
732: NULL, 0, "HTLoadHTTP");
733: http->state = HTTP_ERROR;
734: break;
735: }
736: HTHost_setClass(host, "http");
1.95 frystyk 737: }
738:
1.123 frystyk 739: /*
740: ** Create the stream pipe FROM the channel to the application.
741: ** The target for the input stream pipe is set up using the
742: ** stream stack.
1.113 frystyk 743: */
1.126 frystyk 744: HTNet_getInput(net,
745: HTStreamStack(WWW_HTTP,
746: HTRequest_outputFormat(request),
747: HTRequest_outputStream(request),
748: request, YES), NULL, 0);
1.127 frystyk 749: HTRequest_setOutputConnected(request, YES);
750:
1.123 frystyk 751: /*
752: ** Create the stream pipe TO the channel from the application
753: ** and hook it up to the request object
754: */
755: {
756: HTOutputStream * output = HTNet_getOutput(net, NULL, 0);
1.126 frystyk 757: HTStream * app =
758: HTMethod_hasEntity(HTRequest_method(request)) ?
1.123 frystyk 759: HTMIMERequest_new(request,
760: HTTPRequest_new(request,(HTStream*) output,NO),YES) :
761: HTTPRequest_new(request, (HTStream*) output, YES);
762: HTRequest_setInputStream(request, app);
763: }
1.88 frystyk 764:
765: /*
766: ** Set up concurrent read/write if this request isn't the
767: ** source for a PUT or POST. As source we don't start reading
768: ** before all destinations are ready. If destination then
769: ** register the input stream and get ready for read
770: */
1.112 frystyk 771: if (HTRequest_isDestination(request)) {
1.124 eric 772: HTEvent_register(net->sockfd, request, (SockOps) FD_READ,
1.94 frystyk 773: HTLoadHTTP, net->priority);
1.88 frystyk 774: HTRequest_linkDestination(request);
775: }
1.71 frystyk 776: http->state = HTTP_NEED_REQUEST;
1.133 frystyk 777: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.94 frystyk 778: return HT_OK;
1.71 frystyk 779: else
780: http->state = HTTP_ERROR; /* Error or interrupt */
781: break;
782:
1.87 frystyk 783: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 784: case HTTP_NEED_REQUEST:
1.94 frystyk 785: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 786: if (HTRequest_isDestination(request)) {
1.126 frystyk 787: HTRequest * source = HTRequest_source(request);
788: HTNet * srcnet = HTRequest_net(source);
1.112 frystyk 789: if (srcnet) {
1.126 frystyk 790: SOCKET sockfd = HTNet_socket(srcnet);
791: HTEvent_register(sockfd, source,
1.112 frystyk 792: (SockOps) FD_READ,
793: srcnet->cbf, srcnet->priority);
1.126 frystyk 794: HTEvent_unregister(sockfd, FD_WRITE);
1.112 frystyk 795: }
1.94 frystyk 796: return HT_OK;
1.80 frystyk 797: }
1.126 frystyk 798:
799: /*
800: ** Should we use the input stream directly or call the post
801: ** callback function to send data down to the network?
802: */
803: {
804: HTStream * input = HTRequest_inputStream(request);
805: HTPostCallback * pcbf = HTRequest_postCallback(request);
1.131 frystyk 806: if (pcbf) {
807: status = pcbf(request, input);
808: if (status == HT_PAUSE || status == HT_LOADED)
809: ops = FD_READ;
810: } else {
811: status = (*input->isa->flush)(input);
1.126 frystyk 812: ops = FD_READ; /* Trick to ensure that we do READ */
1.131 frystyk 813: }
814: if (status == HT_WOULD_BLOCK) return HT_OK;
1.126 frystyk 815: }
1.94 frystyk 816: } else if (ops == FD_READ) {
1.123 frystyk 817: status = (*net->input->isa->read)(net->input);
1.131 frystyk 818: if (status == HT_WOULD_BLOCK)
1.94 frystyk 819: return HT_OK;
1.131 frystyk 820: else if (status == HT_CONTINUE) {
1.130 frystyk 821: if (PROT_TRACE) HTTrace("HTTP........ Continuing\n");
822: ops = FD_WRITE;
823: continue;
1.133 frystyk 824: } else if (status==HT_LOADED)
1.94 frystyk 825: http->state = http->next; /* Jump to next state */
1.133 frystyk 826: else if (status==HT_CLOSED) {
827: HTHost * host = HTNet_host(net);
828:
829: /*
830: ** If this is a persistent connection and we get a close
831: ** then it is an error and we should recover from it by
832: ** restarting the pipe line of requests if any
833: */
834: if (HTHost_isPersistent(host)) {
835: status = HT_RECOVER_PIPE;
836: http->state = HTTP_ERROR;
837: break;
838: } else
1.134 ! frystyk 839: http->state = HTTP_OK;
1.133 frystyk 840: } else
1.94 frystyk 841: http->state = HTTP_ERROR;
1.90 frystyk 842: } else {
1.78 frystyk 843: http->state = HTTP_ERROR;
1.90 frystyk 844: }
1.71 frystyk 845: break;
1.80 frystyk 846:
1.134 ! frystyk 847: case HTTP_OK:
1.88 frystyk 848: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 849: if (HTRequest_isDestination(request)) {
1.126 frystyk 850: HTRequest * source = HTRequest_source(request);
1.91 frystyk 851: HTLink *link =
1.127 frystyk 852: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 853: (HTAnchor *) anchor);
1.109 frystyk 854: HTLink_setResult(link, HT_LINK_OK);
1.91 frystyk 855: }
1.112 frystyk 856: }
1.134 ! frystyk 857: HTTPCleanup(request, http->result);
1.94 frystyk 858: return HT_OK;
1.71 frystyk 859: break;
1.80 frystyk 860:
1.71 frystyk 861: case HTTP_ERROR:
1.88 frystyk 862: if (HTRequest_isPostWeb(request)) {
1.91 frystyk 863: if (HTRequest_isDestination(request)) {
1.126 frystyk 864: HTRequest * source = HTRequest_source(request);
1.91 frystyk 865: HTLink *link =
1.127 frystyk 866: HTLink_find((HTAnchor *)HTRequest_anchor(source),
1.112 frystyk 867: (HTAnchor *) anchor);
1.109 frystyk 868: HTLink_setResult(link, HT_LINK_ERROR);
1.91 frystyk 869: }
1.112 frystyk 870: HTRequest_killPostWeb(request);
871: }
1.134 ! frystyk 872: HTTPCleanup(request, http->result);
1.94 frystyk 873: return HT_OK;
1.71 frystyk 874: break;
875: }
876: } /* End of while(1) */
877: }
1.88 frystyk 878:
1.21 luotonen 879:
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