Annotation of libwww/Library/src/HTTP.c, revision 1.108
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"
1.80 frystyk 38: #include "HTTPReq.h"
1.55 frystyk 39: #include "HTTP.h" /* Implements */
40:
41: /* Macros and other defines */
1.94 frystyk 42: #ifndef HTTP_PORT
43: #define HTTP_PORT 80 /* Allocated to http by Jon Postel/ISI 24-Jan-92 */
44: #endif
45:
1.71 frystyk 46: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
47: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
48: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
49: #define FREE_TARGET (*me->target->isa->_free)(me->target)
1.74 frystyk 50: #define ABORT_TARGET (*me->target->isa->abort)(me->target, e)
1.2 timbl 51:
1.59 frystyk 52: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 53:
54: /* Final states have negative value */
1.59 frystyk 55: typedef enum _HTTPState {
1.81 frystyk 56: HTTP_RETRY = -4,
1.71 frystyk 57: HTTP_ERROR = -3,
58: HTTP_NO_DATA = -2,
59: HTTP_GOT_DATA = -1,
60: HTTP_BEGIN = 0,
61: HTTP_NEED_CONNECTION,
62: HTTP_NEED_REQUEST,
63: HTTP_REDIRECTION,
1.91 frystyk 64: HTTP_NOT_MODIFIED,
65: HTTP_EXPIRED,
1.71 frystyk 66: HTTP_AA
1.59 frystyk 67: } HTTPState;
1.55 frystyk 68:
1.94 frystyk 69: /* This is the context structure for the this module */
1.55 frystyk 70: typedef struct _http_info {
1.81 frystyk 71: HTTPState state; /* Current State of the connection */
72: HTTPState next; /* Next state */
1.55 frystyk 73: } http_info;
74:
1.88 frystyk 75: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 76:
1.71 frystyk 77: struct _HTStream {
78: CONST HTStreamClass * isa;
79: HTStream * target;
80: HTRequest * request;
81: http_info * http;
82: HTSocketEOL state;
83: BOOL transparent;
1.81 frystyk 84: char * version; /* Should we save this? */
1.71 frystyk 85: int status;
1.81 frystyk 86: char * reason;
1.71 frystyk 87: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 88: int buflen;
1.71 frystyk 89: };
1.21 luotonen 90:
1.71 frystyk 91: /* ------------------------------------------------------------------------- */
92: /* Help Functions */
93: /* ------------------------------------------------------------------------- */
1.21 luotonen 94:
1.94 frystyk 95: /* HTTPCleanup
96: ** -----------
1.55 frystyk 97: ** This function closes the connection and frees memory.
1.94 frystyk 98: ** Returns YES on OK, else NO
1.1 timbl 99: */
1.94 frystyk 100: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 101: {
1.94 frystyk 102: HTNet *net = req->net;
103: http_info *http = (http_info *) net->context;
1.80 frystyk 104:
1.94 frystyk 105: /* Free stream with data TO network */
106: if (!HTRequest_isDestination(req) && req->input_stream) {
107: if (status == HT_INTERRUPTED)
108: (*req->input_stream->isa->abort)(req->input_stream, NULL);
109: else
110: (*req->input_stream->isa->_free)(req->input_stream);
1.104 frystyk 111: req->input_stream = NULL;
1.94 frystyk 112: }
1.88 frystyk 113:
1.94 frystyk 114: /* Remove the request object and our own context structure for http */
115: HTNet_delete(net, status);
116: FREE(http);
117: return YES;
1.55 frystyk 118: }
119:
120:
1.94 frystyk 121: PRIVATE BOOL HTTPAuthentication (HTRequest * request)
1.71 frystyk 122: {
123: HTAAScheme scheme;
124: HTList *valid_schemes = HTList_new();
125: HTAssocList **scheme_specifics = NULL;
1.76 frystyk 126: char *tmplate = NULL;
1.71 frystyk 127:
128: if (request->WWWAAScheme) {
129: if ((scheme = HTAAScheme_enum(request->WWWAAScheme)) != HTAA_UNKNOWN) {
130: HTList_addObject(valid_schemes, (void *) scheme);
131: if (!scheme_specifics) {
132: int i;
133: scheme_specifics = (HTAssocList**)
134: malloc(HTAA_MAX_SCHEMES * sizeof(HTAssocList*));
135: if (!scheme_specifics)
136: outofmem(__FILE__, "HTTPAuthentication");
137: for (i=0; i < HTAA_MAX_SCHEMES; i++)
138: scheme_specifics[i] = NULL;
139: }
140: scheme_specifics[scheme] = HTAA_parseArgList(request->WWWAARealm);
141: } else if (PROT_TRACE) {
1.104 frystyk 142: HTRequest_addError(request, ERR_INFO, NO, HTERR_UNKNOWN_AA,
1.71 frystyk 143: (void *) request->WWWAAScheme, 0, "HTTPAuthentication");
144: return NO;
145: }
146: }
147: if (request->WWWprotection) {
148: if (PROT_TRACE)
1.102 frystyk 149: TTYPrint(TDEST, "Protection template set to `%s'\n",
1.71 frystyk 150: request->WWWprotection);
1.76 frystyk 151: StrAllocCopy(tmplate, request->WWWprotection);
1.71 frystyk 152: }
153: request->valid_schemes = valid_schemes;
154: request->scheme_specifics = scheme_specifics;
1.76 frystyk 155: request->prot_template = tmplate;
1.71 frystyk 156: return YES;
157: }
158:
159:
160: /*
161: ** This is a big switch handling all HTTP return codes. It puts in any
162: ** appropiate error message and decides whether we should expect data
1.78 frystyk 163: ** or not.
1.55 frystyk 164: */
1.100 frystyk 165: PRIVATE void HTTPNextState (HTStream * me)
1.55 frystyk 166: {
1.71 frystyk 167: switch (me->status) {
168:
1.78 frystyk 169: case 0: /* 0.9 response */
170: case 200:
171: case 201:
172: case 202:
173: case 203:
1.81 frystyk 174: me->http->next = HTTP_GOT_DATA;
1.71 frystyk 175: break;
1.78 frystyk 176:
177: case 204: /* No Response */
1.81 frystyk 178: me->http->next = HTTP_NO_DATA;
1.71 frystyk 179: break;
1.78 frystyk 180:
1.71 frystyk 181: case 301: /* Moved */
182: case 302: /* Found */
1.81 frystyk 183: me->http->next = HTTP_REDIRECTION;
1.71 frystyk 184: break;
1.55 frystyk 185:
1.71 frystyk 186: case 303: /* Method */
1.107 frystyk 187: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
188: me->reason, (int) strlen(me->reason),
189: "HTTPNextState");
1.81 frystyk 190: me->http->next = HTTP_ERROR;
1.71 frystyk 191: break;
1.91 frystyk 192:
193: case 304: /* Not Modified */
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 */
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 */
369: me->target = HTStreamStack(WWW_MIME, WWW_PRESENT,
370: HTBlackHole(), 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 */
1.17 timbl 495:
1.94 frystyk 496: /*
497: ** Initiate a new http structure and bind to request structure
498: ** This is actually state HTTP_BEGIN, but it can't be in the state
499: ** machine as we need the structure first.
500: */
501: if (ops == FD_NONE) {
1.102 frystyk 502: if (PROT_TRACE) TTYPrint(TDEST, "HTTP........ Looking for `%s\'\n",
1.94 frystyk 503: HTAnchor_physical(request->anchor));
1.71 frystyk 504: if ((http = (http_info *) calloc(1, sizeof(http_info))) == NULL)
505: outofmem(__FILE__, "HTLoadHTTP");
506: http->state = HTTP_BEGIN;
1.85 frystyk 507: http->next = HTTP_ERROR;
1.94 frystyk 508: net->context = http;
1.98 frystyk 509: } else if (ops == FD_CLOSE) { /* Interrupted */
1.100 frystyk 510: #if 1
511: if (HTRequest_isPostWeb(request))
512: #else
1.94 frystyk 513: if(HTRequest_isPostWeb(request)&&!HTRequest_isMainDestination(request))
1.100 frystyk 514: #endif
1.94 frystyk 515: HTTPCleanup(request, HT_IGNORE);
516: else
517: HTTPCleanup(request, HT_INTERRUPTED);
518: return HT_OK;
519: } else
520: http = (http_info *) net->context; /* Get existing copy */
1.71 frystyk 521:
522: /* Now jump into the machine. We know the state from the previous run */
523: while (1) {
524: switch (http->state) {
525: case HTTP_BEGIN:
526: /*
527: ** Compose authorization information (this was moved here
528: ** from after the making of the connection so that the connection
529: ** wouldn't have to wait while prompting username and password
530: ** from the user). -- AL 13.10.93
531: */
532: HTAA_composeAuth(request);
533: if (PROT_TRACE) {
534: if (request->authorization)
1.102 frystyk 535: TTYPrint(TDEST, "HTTP........ Sending Authorization: %s\n",
1.71 frystyk 536: request->authorization);
537: else
1.102 frystyk 538: TTYPrint(TDEST,
1.71 frystyk 539: "HTTP........ Not sending authorization (yet)\n");
540: }
541: http->state = HTTP_NEED_CONNECTION;
542: break;
543:
544: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
1.94 frystyk 545: status = HTDoConnect(net, HTAnchor_physical(request->anchor),
1.95 frystyk 546: HTTP_PORT);
1.80 frystyk 547: if (status == HT_OK) {
1.95 frystyk 548:
549: /* Check the protocol class */
1.97 frystyk 550: char *s_class = HTDNS_serverClass(net->dns);
551: if (s_class && strcasecomp(s_class, "http")) {
1.104 frystyk 552: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1.95 frystyk 553: NULL, 0, "HTLoadHTTP");
554: http->state = HTTP_ERROR;
555: break;
556: }
557: HTDNS_setServerClass(net->dns, "http");
558:
1.71 frystyk 559: if (PROT_TRACE)
1.102 frystyk 560: TTYPrint(TDEST, "HTTP........ Connected, socket %d\n",
1.94 frystyk 561: net->sockfd);
1.80 frystyk 562:
1.88 frystyk 563: /* Set up stream TO network */
564: request->input_stream =
1.100 frystyk 565: HTTPRequest_new(request, HTBufWriter_new(net, YES, 512));
1.88 frystyk 566:
567: /*
568: ** Set up concurrent read/write if this request isn't the
569: ** source for a PUT or POST. As source we don't start reading
570: ** before all destinations are ready. If destination then
571: ** register the input stream and get ready for read
572: */
573: if (HTRequest_isPostWeb(request)) {
1.94 frystyk 574: HTEvent_Register(net->sockfd, request, (SockOps) FD_READ,
575: HTLoadHTTP, net->priority);
1.88 frystyk 576: HTRequest_linkDestination(request);
577: }
578:
579: /* Set up stream FROM network and corresponding read buffer */
1.94 frystyk 580: net->isoc = HTInputSocket_new(net->sockfd);
1.88 frystyk 581:
1.105 frystyk 582: /* @@@ USE STREAM STACK @@@ */
583: net->target = HTTPStatus_new(request, http);
1.71 frystyk 584: http->state = HTTP_NEED_REQUEST;
1.96 frystyk 585: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
1.94 frystyk 586: return HT_OK;
1.71 frystyk 587: else
588: http->state = HTTP_ERROR; /* Error or interrupt */
589: break;
590:
1.87 frystyk 591: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 592: case HTTP_NEED_REQUEST:
1.94 frystyk 593: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 594: if (HTRequest_isDestination(request)) {
1.94 frystyk 595: HTNet *srcnet = request->source->net;
596: HTEvent_Register(srcnet->sockfd, request->source,
597: (SockOps) FD_READ,
1.100 frystyk 598: srcnet->cbf, srcnet->priority);
1.94 frystyk 599: return HT_OK;
1.80 frystyk 600: }
1.101 frystyk 601: status = request->PostCallback ?
602: request->PostCallback(request, request->input_stream) :
1.88 frystyk 603: (*request->input_stream->isa->flush)(request->input_stream);
1.71 frystyk 604: if (status == HT_WOULD_BLOCK)
1.94 frystyk 605: return HT_OK;
606: else
607: ops = FD_READ; /* Trick to ensure that we do READ */
608: } else if (ops == FD_READ) {
1.98 frystyk 609: status = HTSocketRead(request, net);
1.80 frystyk 610: if (status == HT_WOULD_BLOCK)
1.94 frystyk 611: return HT_OK;
612: else if (status == HT_LOADED)
613: http->state = http->next; /* Jump to next state */
1.91 frystyk 614: else if (status == HT_RELOAD)
615: http->state = HTTP_EXPIRED;
1.94 frystyk 616: else
617: http->state = HTTP_ERROR;
1.90 frystyk 618: } else {
1.78 frystyk 619: http->state = HTTP_ERROR;
1.90 frystyk 620: }
1.71 frystyk 621: break;
1.80 frystyk 622:
1.91 frystyk 623: case HTTP_NOT_MODIFIED:
624: http->state = HTTP_ERROR;
625: break;
626:
627: case HTTP_EXPIRED:
628: /* Dirty hack and fall through */
1.102 frystyk 629: if (PROT_TRACE) TTYPrint(TDEST, "HTTP........ Expired\n");
1.91 frystyk 630: request->redirect = request->anchor->address;
631:
1.80 frystyk 632: case HTTP_REDIRECTION:
1.88 frystyk 633: /* Clean up the other connections or just this one */
634: if (HTRequest_isPostWeb(request))
635: HTRequest_killPostWeb(request);
636: else
1.94 frystyk 637: HTTPCleanup(request, HT_IGNORE);
1.88 frystyk 638:
639: /* If we found a new URL in the response */
1.71 frystyk 640: if (request->redirect) {
641: if (status == 301) {
1.104 frystyk 642: HTRequest_addError(request, ERR_INFO, NO, HTERR_MOVED,
1.71 frystyk 643: (void *) request->redirect,
644: (int) strlen(request->redirect), "HTLoadHTTP");
645: } else if (status == 302) {
1.104 frystyk 646: HTRequest_addError(request, ERR_INFO, NO, HTERR_FOUND,
1.71 frystyk 647: (void *) request->redirect,
648: (int) strlen(request->redirect), "HTLoadHTTP");
1.55 frystyk 649: }
1.88 frystyk 650:
651: /* If we haven't reached the limit for redirection */
1.94 frystyk 652: if (HTRequest_retry(request)) {
1.107 frystyk 653: HTAlertCallback *cbf = HTAlert_find(HT_A_CONFIRM);
1.87 frystyk 654: HTAnchor *anchor = HTAnchor_findAddress(request->redirect);
1.108 ! frystyk 655:
! 656: /* Make sure that we don't get this from cache */
! 657: HTRequest_setReloadMode(request, HT_FORCE_RELOAD);
! 658:
1.88 frystyk 659: if (HTRequest_isPostWeb(request)) {
660: HTRequest *dest = HTRequest_mainDestination(request);
1.107 frystyk 661: if (cbf && (*cbf)(request, HT_A_CONFIRM, HT_MSG_MOVED,
662: NULL, request->redirect, NULL)) {
1.88 frystyk 663:
664: /* The new anchor inherits the Post Web */
1.91 frystyk 665: HTAnchor_moveAllLinks((HTAnchor *) request->anchor,
666: anchor);
1.88 frystyk 667: if (HTRequest_isSource(request))
668: HTRequest_delete(request);
1.94 frystyk 669: return HTCopyAnchor((HTAnchor *) anchor, dest) ?
670: HT_OK : HT_ERROR;
1.87 frystyk 671: }
1.94 frystyk 672: return HT_OK;
1.101 frystyk 673: } if (request->PostCallback) {
1.87 frystyk 674: #if 0
1.94 frystyk 675: return HTUploadAnchor((HTAnchor*) anchor, request) ?
676: HT_OK : HT_ERROR;
1.87 frystyk 677: #endif
678: } else {
1.94 frystyk 679: return HTLoadAnchor((HTAnchor *) anchor, request) ?
680: HT_OK : HT_ERROR;
1.87 frystyk 681: }
1.71 frystyk 682: } else {
1.106 frystyk 683: HTRequest_addError(request, ERR_FATAL, NO,
684: HTERR_MAX_REDIRECT,NULL,0,"HTLoadHTTP");
1.88 frystyk 685: if (HTRequest_isPostWeb(request)) {
686: BOOL main = HTRequest_isMainDestination(request);
1.91 frystyk 687: if (HTRequest_isDestination(request)) {
688: HTLink *link =
1.106 frystyk 689: HTAnchor_findLink((HTAnchor *)request->source->anchor,
690: (HTAnchor *)request->anchor);
1.91 frystyk 691: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
692: }
1.106 frystyk 693: HTNet_callAfter(request, main ? HT_ERROR : HT_IGNORE);
1.88 frystyk 694: HTRequest_removeDestination(request);
695: }
1.94 frystyk 696: return HT_OK;
1.58 frystyk 697: }
1.71 frystyk 698: } else {
1.104 frystyk 699: HTRequest_addError(request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.71 frystyk 700: NULL, 0, "HTLoadHTTP");
1.94 frystyk 701: return HT_OK;
1.71 frystyk 702: }
703: break;
1.80 frystyk 704:
1.71 frystyk 705: case HTTP_AA:
1.88 frystyk 706: /* Clean up the other connections or just this one */
707: if (HTRequest_isPostWeb(request))
708: HTRequest_killPostWeb(request);
709: else
1.94 frystyk 710: HTTPCleanup(request, HT_IGNORE);
1.88 frystyk 711:
712: /* Ask the user for a UserID and a passwd */
713: if (HTTPAuthentication(request) && HTAA_retryWithAuth(request)) {
1.94 frystyk 714: int ret;
1.108 ! frystyk 715:
! 716: /* Make sure that we don't get this from cache */
! 717: HTRequest_setReloadMode(request, HT_FORCE_RELOAD);
! 718:
1.88 frystyk 719: if (HTRequest_isPostWeb(request)) {
720: HTRequest *dest = HTRequest_mainDestination(request);
721: HTAnchor_appendMethods(request->anchor, request->method);
1.94 frystyk 722: ret=HTCopyAnchor((HTAnchor*)request->source->anchor, dest);
723: return ret ? HT_OK : HT_ERROR;
1.101 frystyk 724: } else if (request->PostCallback) {
1.85 frystyk 725: #if 0
1.94 frystyk 726: ret = HTUploadAnchor((HTAnchor*) request->anchor,request);
727: return ret ? HT_OK : HT_ERROR;
1.85 frystyk 728: #endif
729: } else {
1.94 frystyk 730: ret = HTLoadAnchor((HTAnchor *) request->anchor, request);
731: return ret ? HT_OK : HT_ERROR;
1.85 frystyk 732: }
1.88 frystyk 733: } else { /* If the guy said no :-( */
1.104 frystyk 734: HTRequest_addError(request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.94 frystyk 735: NULL, 0, "HTLoadHTTP");
1.88 frystyk 736: if (HTRequest_isPostWeb(request)) {
737: BOOL main = HTRequest_isMainDestination(request);
1.91 frystyk 738: if (HTRequest_isDestination(request)) {
739: HTLink *link =
740: HTAnchor_findLink((HTAnchor *) request->source->anchor,
741: (HTAnchor *) request->anchor);
742: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
743: }
1.106 frystyk 744: HTNet_callAfter(request, main ? HT_ERROR : HT_IGNORE);
1.88 frystyk 745: HTRequest_removeDestination(request);
746: }
1.94 frystyk 747: return HT_OK;
1.71 frystyk 748: }
749: break;
1.80 frystyk 750:
1.71 frystyk 751: case HTTP_GOT_DATA:
1.88 frystyk 752: if (HTRequest_isPostWeb(request)) {
1.100 frystyk 753: HTTPCleanup(request, HTRequest_isMainDestination(request) ?
754: HT_ERROR : HT_IGNORE);
1.91 frystyk 755: if (HTRequest_isDestination(request)) {
756: HTLink *link =
757: HTAnchor_findLink((HTAnchor *) request->source->anchor,
758: (HTAnchor *) request->anchor);
759: HTAnchor_setLinkResult(link, HT_LINK_OK);
760: }
1.88 frystyk 761: HTRequest_removeDestination(request);
1.94 frystyk 762: } else
763: HTTPCleanup(request, HT_LOADED);
764: return HT_OK;
1.71 frystyk 765: break;
766:
767: case HTTP_NO_DATA:
1.88 frystyk 768: if (HTRequest_isPostWeb(request)) {
1.100 frystyk 769: HTTPCleanup(request, HTRequest_isMainDestination(request) ?
770: HT_ERROR : HT_IGNORE);
1.91 frystyk 771: if (HTRequest_isDestination(request)) {
772: HTLink *link =
773: HTAnchor_findLink((HTAnchor *) request->source->anchor,
774: (HTAnchor *) request->anchor);
775: HTAnchor_setLinkResult(link, HT_LINK_OK);
776: }
1.88 frystyk 777: HTRequest_removeDestination(request);
1.94 frystyk 778: } else
779: HTTPCleanup(request, HT_NO_DATA);
780: return HT_OK;
1.71 frystyk 781: break;
1.80 frystyk 782:
1.94 frystyk 783: case HTTP_RETRY:
1.88 frystyk 784: if (HTRequest_isPostWeb(request)) {
1.100 frystyk 785: HTTPCleanup(request, HTRequest_isMainDestination(request) ?
786: HT_ERROR : HT_IGNORE);
1.91 frystyk 787: HTRequest_killPostWeb(request);
788: if (HTRequest_isDestination(request)) {
789: HTLink *link =
790: HTAnchor_findLink((HTAnchor*) request->source->anchor,
791: (HTAnchor*) request->anchor);
792: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
793: }
1.88 frystyk 794: HTRequest_removeDestination(request);
1.91 frystyk 795: } else
1.94 frystyk 796: HTTPCleanup(request, HT_RETRY);
797: return HT_OK;
1.81 frystyk 798: break;
799:
1.71 frystyk 800: case HTTP_ERROR:
1.88 frystyk 801: /* Clean up the other connections or just this one */
802: if (HTRequest_isPostWeb(request)) {
1.100 frystyk 803: HTTPCleanup(request, HTRequest_isMainDestination(request) ?
804: HT_ERROR : HT_IGNORE);
1.88 frystyk 805: HTRequest_killPostWeb(request);
1.91 frystyk 806: if (HTRequest_isDestination(request)) {
807: HTLink *link =
808: HTAnchor_findLink((HTAnchor *) request->source->anchor,
809: (HTAnchor *) request->anchor);
810: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
811: }
812: HTRequest_removeDestination(request);
1.88 frystyk 813: } else
1.94 frystyk 814: HTTPCleanup(request, HT_ERROR);
815: return HT_OK;
1.71 frystyk 816: break;
817: }
818: } /* End of while(1) */
819: }
1.88 frystyk 820:
1.21 luotonen 821:
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