Annotation of libwww/Library/src/HTTP.c, revision 1.57
1.44 frystyk 1: /* HyperText73 Tranfer Protocol - Client implementation HTTP.c
1.1 timbl 2: ** ==========================
1.2 timbl 3: **
1.55 frystyk 4: ** This module implments the HTTP protocol
5: **
6: ** History:
7: ** < May 24 94 ?? Unknown - but obviosly written
1.56 frystyk 8: ** May 24 94 HF Made reentrent and cleaned up a bit. Implemented
9: ** Forward, redirection, error handling and referer field
1.55 frystyk 10: **
1.1 timbl 11: */
12:
1.2 timbl 13: #define HTTP_VERSION "HTTP/1.0"
1.55 frystyk 14: #define HTTP2 /* Version is greater than 0.9 */
15: #define VERSION_LENGTH 20 /* Number of chars in protocol version */
1.2 timbl 16:
1.55 frystyk 17: /* Uses: */
1.1 timbl 18: #include "HTParse.h"
19: #include "HTUtils.h"
20: #include "tcp.h"
21: #include "HTTCP.h"
22: #include "HTFormat.h"
1.2 timbl 23: #include "HTAlert.h"
24: #include "HTMIME.h"
1.5 timbl 25: #include "HTML.h" /* SCW */
26: #include "HTInit.h" /* SCW */
1.21 luotonen 27: #include "HTAccess.h" /* HTRequest */
1.14 luotonen 28: #include "HTAABrow.h" /* Access Authorization */
1.20 timbl 29: #include "HTTee.h" /* Tee off a cache stream */
30: #include "HTFWriter.h" /* Write to cache file */
1.54 luotonen 31: #include "HTError.h"
1.55 frystyk 32: #include "HTChunk.h"
33: #include "HTTP.h" /* Implements */
34:
35: /* Macros and other defines */
36: #define PUTBLOCK(b, l) (*target->isa->put_block)(target, b, l)
37: #define PUTS(s) (*target->isa->put_string)(target, s)
38: #define FREE_TARGET (*target->isa->free)(target)
1.1 timbl 39:
1.2 timbl 40: struct _HTStream {
41: HTStreamClass * isa; /* all we need to know */
42: };
43:
1.55 frystyk 44: /* Globals */
1.6 timbl 45: extern char * HTAppName; /* Application name: please supply */
46: extern char * HTAppVersion; /* Application version: please supply */
47:
1.50 luotonen 48: #ifdef OLD_CODE
1.37 luotonen 49: PUBLIC long HTProxyBytes = 0; /* Number of bytes transferred thru proxy */
1.50 luotonen 50: #endif
51:
1.37 luotonen 52: extern BOOL using_proxy; /* are we using a proxy gateway? */
53: PUBLIC char * HTProxyHeaders = NULL; /* Headers to pass as-is */
1.23 luotonen 54:
1.55 frystyk 55: /* ------------------------------------------------------------------------- */
56: /* TEMPORARY STUFF - MOVE TO HTML file */
57:
58: typedef struct _http_info {
59: int socket; /* Socket number for communication */
60: HTInputSocket * isoc;
61: } http_info;
62:
63: /* ------------------------------------------------------------------------- */
64:
1.21 luotonen 65: PRIVATE void parse_401_headers ARGS2(HTRequest *, req,
66: HTInputSocket *, isoc)
67: {
68: HTAAScheme scheme;
69: char *line;
70: int num_schemes = 0;
71: HTList *valid_schemes = HTList_new();
72: HTAssocList **scheme_specifics = NULL;
73: char *template = NULL;
74:
75: /* Read server reply header lines */
76:
77: if (TRACE)
78: fprintf(stderr, "Server 401 reply header lines:\n");
79:
80: while (NULL != (line = HTInputSocket_getUnfoldedLine(isoc)) &&
81: *line != 0) {
82:
83: if (TRACE) fprintf(stderr, "%s\n", line);
84:
85: if (strchr(line, ':')) { /* Valid header line */
86:
87: char *p = line;
88: char *fieldname = HTNextField(&p);
89: char *arg1 = HTNextField(&p);
90: char *args = p;
91:
92: if (0==strcasecomp(fieldname, "WWW-Authenticate:")) {
93: if (HTAA_UNKNOWN != (scheme = HTAAScheme_enum(arg1))) {
94: HTList_addObject(valid_schemes, (void*)scheme);
95: if (!scheme_specifics) {
96: int i;
97: scheme_specifics = (HTAssocList**)
98: malloc(HTAA_MAX_SCHEMES * sizeof(HTAssocList*));
99: if (!scheme_specifics)
100: outofmem(__FILE__, "parse_401_headers");
101: for (i=0; i < HTAA_MAX_SCHEMES; i++)
102: scheme_specifics[i] = NULL;
103: }
104: scheme_specifics[scheme] = HTAA_parseArgList(args);
105: num_schemes++;
106: }
107: else if (TRACE) {
108: fprintf(stderr, "Unknown scheme `%s' %s\n",
109: (arg1 ? arg1 : "(null)"),
110: "in WWW-Authenticate: field");
111: }
112: }
113:
114: else if (0==strcasecomp(fieldname, "WWW-Protection-Template:")) {
115: if (TRACE)
116: fprintf(stderr, "Protection template set to `%s'\n", arg1);
117: StrAllocCopy(template, arg1);
118: }
119:
120: } /* if a valid header line */
121: else if (TRACE) {
122: fprintf(stderr, "Invalid header line `%s' ignored\n", line);
123: } /* else invalid header line */
1.44 frystyk 124: free(line);
1.21 luotonen 125: } /* while header lines remain */
1.44 frystyk 126: FREE(line);
1.21 luotonen 127: req->valid_schemes = valid_schemes;
128: req->scheme_specifics = scheme_specifics;
129: req->prot_template = template;
130: }
131:
132:
1.55 frystyk 133: /* HTTPCleanup
1.1 timbl 134: **
1.55 frystyk 135: ** This function closes the connection and frees memory.
1.1 timbl 136: **
1.55 frystyk 137: ** Returns 0 on OK, else -1
1.1 timbl 138: */
1.55 frystyk 139: PRIVATE int HTTPCleanup ARGS2(HTRequest *, request, http_info *, http)
1.1 timbl 140: {
1.55 frystyk 141: int status = 0;
142: if (!request) {
143: if (TRACE) fprintf(stderr, "HTTPCleanup. Bad argument!\n");
144: status = -1;
145: } else {
146: if (http->socket >= 0) {
147: if (TRACE) fprintf(stderr, "HTTP........ Closing socket %d\n",
148: http->socket);
149: if ((status = NETCLOSE(http->socket)) < 0)
150: HTErrorSysAdd(request, ERR_FATAL, NO, "NETCLOSE");
151: }
152: }
153: free(http);
154: return status;
155: }
1.36 frystyk 156:
1.23 luotonen 157:
1.55 frystyk 158: /* HTTPSendRequest
159: **
160: ** This function composes and sends a request to the connected server
161: ** specified.
162: **
163: ** Returns 0 on OK, else -1 but does NOT close the connection
1.1 timbl 164: */
1.55 frystyk 165: PRIVATE int HTTPSendRequest ARGS3(HTRequest *, request,
166: http_info *, http, char *, url)
167: {
168: int status = 0;
169: BOOL extensions = YES; /* Assume good HTTP server */
170: HTChunk *command = HTChunkCreate(2048); /* The whole command */
171: if (request->method != METHOD_INVALID) {
172: HTChunkPuts(command, HTMethod_name(request->method));
173: HTChunkPutc(command, ' ');
174: }
175: else
176: HTChunkPuts(command, "GET ");
1.1 timbl 177:
1.55 frystyk 178: /* if we are using a proxy gateway don't copy in the first slash
179: ** of say: /gopher://a;lkdjfl;ajdf;lkj/;aldk/adflj
180: ** so that just gohper://.... is sent. */
1.1 timbl 181: {
1.55 frystyk 182: char *p1 = HTParse(url, "", PARSE_PATH|PARSE_PUNCTUATION);
183: if (using_proxy)
184: HTChunkPuts(command, p1+1);
1.21 luotonen 185: else
1.55 frystyk 186: HTChunkPuts(command, p1);
187: free(p1);
1.15 luotonen 188: }
1.1 timbl 189:
1.2 timbl 190: #ifdef HTTP2
1.55 frystyk 191: if (extensions) {
192: HTChunkPutc(command, ' ');
193: HTChunkPuts(command, HTTP_VERSION);
194: }
1.2 timbl 195: #endif
1.55 frystyk 196: HTChunkPutc(command, CR); /* CR LF, as in rfc 977 */
197: HTChunkPutc(command, LF);
1.17 timbl 198:
1.55 frystyk 199: if (extensions && HTImProxy && HTProxyHeaders) {
200: HTChunkPuts(command, HTProxyHeaders);
201: } else if (extensions) {
1.56 frystyk 202: char line[256]; /*@@@@ */
1.55 frystyk 203:
204: /* If no conversion list, then put it up, but leave initialization
205: to the client */
206: if (!HTConversions)
207: HTConversions = HTList_new();
1.21 luotonen 208:
1.55 frystyk 209: /* Run through both lists and generate `accept' lines */
210: {
1.17 timbl 211: int i;
1.21 luotonen 212: HTList *conversions[2];
213: conversions[0] = HTConversions;
214: conversions[1] = request->conversions;
1.34 frystyk 215:
1.21 luotonen 216: for (i=0; i<2; i++) {
217: HTList *cur = conversions[i];
218: HTPresentation *pres;
1.55 frystyk 219: while ((pres = (HTPresentation *) HTList_nextObject(cur))) {
220: if (pres->rep_out == WWW_PRESENT) {
1.21 luotonen 221: if (pres->quality != 1.0) {
1.35 frystyk 222: sprintf(line, "Accept: %s; q=%.3f%c%c",
1.21 luotonen 223: HTAtom_name(pres->rep),
224: pres->quality, CR, LF);
225: } else {
226: sprintf(line, "Accept: %s%c%c",
227: HTAtom_name(pres->rep), CR, LF);
228: }
1.55 frystyk 229: HTChunkPuts(command, line);
1.17 timbl 230: }
231: }
1.2 timbl 232: }
1.55 frystyk 233: }
1.22 luotonen 234:
1.56 frystyk 235: #if 0
236: /* Put out referer field if any parent */
237: if (HTAnchor_parent((HTAnchor *) request->anchor) != request->anchor) {
238: char *this = HTAnchor_address((HTAnchor *) request->anchor);
239: char *parent = HTAnchor_address((HTAnchor *)
240: HTAnchor_parent((HTAnchor *)
241: request->anchor));
242: char *relative = HTParse(parent, this,
243: PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
244: if (relative && *relative) {
245: sprintf(line, "Referer: %s%c%c", parent, CR, LF);
246: HTChunkPuts(command, line);
247: }
248: free(this);
249: free(parent);
250: free(relative);
251: }
252: #endif
1.55 frystyk 253: /* Put out user-agent */
1.56 frystyk 254: sprintf(line, "User-Agent: %s/%s libwww/%s%c%c",
255: HTAppName ? HTAppName : "unknown",
256: HTAppVersion ? HTAppVersion : "0.0",
257: HTLibraryVersion, CR, LF);
258: HTChunkPuts(command, line);
1.45 luotonen 259:
1.55 frystyk 260: /* Put out authorization */
261: if (request->authorization != NULL) {
262: HTChunkPuts(command, "Authorization: ");
263: HTChunkPuts(command, request->authorization);
264: HTChunkPutc(command, CR);
265: HTChunkPutc(command, LF);
1.37 luotonen 266: }
1.55 frystyk 267: }
268: HTChunkPutc(command, CR); /* Blank line means "end" */
269: HTChunkPutc(command, LF);
270: HTChunkTerminate(command);
271: if (TRACE) fprintf(stderr, "HTTP Tx..... %s", command->data);
1.17 timbl 272:
1.55 frystyk 273: /* Translate into ASCII if necessary */
1.4 timbl 274: #ifdef NOT_ASCII
1.55 frystyk 275: {
276: char * p;
277: for(p = command; *p; p++) {
278: *p = TOASCII(*p);
1.1 timbl 279: }
1.55 frystyk 280: }
1.3 timbl 281: #endif
1.17 timbl 282:
1.55 frystyk 283: /* Now, we are ready for sending the request */
284: if ((status = NETWRITE(http->socket, command->data, command->size)) < 0) {
285: if (TRACE) fprintf(stderr, "HTTP Tx..... Error sending command\n");
286: HTErrorSysAdd(request, ERR_FATAL, NO, "NETWRITE");
287: if (status != HT_INTERRUPTED) {
288: char *unescaped = NULL;
289: StrAllocCopy(unescaped, url);
290: HTUnEscape(unescaped);
291: HTErrorAdd(request, ERR_FATAL, NO, HTERR_INTERNAL,
292: (void *) unescaped, (int) strlen(unescaped),
293: "HTTPSendRequest");
294: free(unescaped);
295: }
296: }
297: HTChunkFree(command);
298: return status;
299: }
300:
301:
302: /* HTTPGetBody
303: **
304: ** Put up a streamstack and read the body from the socket.
305: ** In the special case of user asking for source and the message
306: ** being in MIME, we force the MIME decoding to occur, as it is really
307: ** HTTP decoding. If the user really wants the HTTP headers, he
308: ** can ask for them as www/mime.
309: **
310: ** Returns < 0 on error, else HT_LOADED
311: */
312: PRIVATE int HTTPGetBody ARGS5(HTRequest *, request, http_info *, http,
313: HTInputSocket *, isoc, HTFormat, format_in,
314: BOOL, use_cache)
315: {
316: int status = -1;
317: HTStream *target = NULL; /* Unconverted data */
318: if (format_in == WWW_MIME && request->output_format == WWW_SOURCE) {
319: target = HTMIMEConvert(request, NULL, format_in,
320: request->output_format,
321: request->output_stream);
322: } else
323: target = HTStreamStack(format_in, request, NO);
324: if (target) {
325:
326: /* @@ Bug: The decision of whether or not to cache should also
327: be made contingent on a IP address match or non match. */
328:
329: if (HTCacheDir && use_cache) {
330: target = HTTee(target,
331: HTCacheWriter(request, NULL, format_in,
332: request->output_format,
333: request->output_stream));
1.17 timbl 334: }
1.55 frystyk 335:
336: /* Push the data down the stream remembering the end of the
337: first buffer we just read */
338: if (format_in == WWW_HTML)
339: target = HTNetToText(target);/* Pipe through CR stripper */
340:
341: PUTBLOCK(isoc->input_pointer,
342: isoc->input_limit-isoc->input_pointer);
343: HTCopy(http->socket, target); /* USE RETURN AS STATUS */
344: FREE_TARGET;
345: status = HT_LOADED;
346: }
347: return status;
348: }
349:
350:
1.56 frystyk 351: /* HTTPRedirect
352: **
353: ** Reads the response from a 3xx server status code. Only the first line
354: ** is read. The format expected is
355: **
356: ** Location: <url> String CrLf
357: **
358: ** The comment string is ignored!
359: **
360: ** NOTE: THIS IS NOT IN CORRESPONDANCE WITH THE SPECS!!!
361: **
362: ** Returns new anchor on success else NULL
363: */
364: PRIVATE HTAnchor *HTTPRedirect ARGS3(HTRequest *, request,
365: HTInputSocket *, isoc, int, code)
366: {
367: BOOL found = NO;
368: HTAnchor *anchor = NULL; /* New anchor */
369: char *line;
370: if (TRACE)
371: fprintf(stderr, "Redirection. Looking for URL's\n");
372: while ((line = HTInputSocket_getUnfoldedLine(isoc)) != NULL) {
373: char *strptr = line;
374: if (*strptr) {
375: while (*strptr && *strptr == ' ') /* Skip leading spaces */
376: strptr++;
377: if (!strncasecomp(strptr, "location:", 9)) {
378: char *url = strchr(strptr, ' ');
379: char *comment;
380: while (*url && *url == ' ') /* Skip leading spaces */
381: url++;
382: if ((comment = strchr(url, ' ')) != NULL)
383: *comment = '0円'; /* Skip any comments */
384: if (code == 301)
1.57 ! frystyk 385: HTErrorAdd(request, ERR_INFO, NO, HTERR_MOVED,
1.56 frystyk 386: (void *) url, (int) strlen(url),
387: "HTTPRedirect");
388: else if (code == 302)
1.57 ! frystyk 389: HTErrorAdd(request, ERR_INFO, NO, HTERR_FOUND,
1.56 frystyk 390: (void *) url, (int) strlen(url),
391: "HTTPRedirect");
392: else {
393: if (TRACE)
394: fprintf(stderr,
395: "Redirection. Weird, should never happen\n");
396: }
397:
398: /* Now use the new anchor instead of the old one */
399: anchor = HTAnchor_findAddress(url);
400: found = YES;
401: FREE(line);
402: break;
403: }
404: }
405: free(line);
406: }
407:
408: if (!found) {
409: int length = (int) strlen(line);
410: HTErrorAdd(request, ERR_FATAL, NO, HTERR_BAD_REPLY,
411: (void *) line, length < 50 ? length : 50, "HTTPRedirect");
412: }
413: return anchor;
414: }
415:
416:
1.55 frystyk 417: /* Load Document from HTTP Server HTLoadHTTP()
418: ** ==============================
419: **
420: ** Given a hypertext address, this routine loads a document.
421: **
422: ** On entry,
423: ** request This is the request structure
424: ** On exit,
425: ** returns <0 Error has occured
426: ** HT_LOADED OK
427: */
428: PUBLIC int HTLoadHTTP ARGS1 (HTRequest *, request)
429: {
430: char *url;
431: int status = -1; /* tcp return */
432: http_info *http; /* Specific protocol information */
433:
434: if (!request || !request->anchor) {
435: if (TRACE) fprintf(stderr, "HTLoadHTTP.. Bad argument\n");
436: return -1;
437: }
438: url = HTAnchor_physical(request->anchor);
439: HTSimplify(url);
440: if (TRACE) fprintf(stderr, "HTTP........ Looking for `%s\'\n", url);
441:
442: /* Initiate a new http structure */
443: if ((http = (http_info *) calloc(1, sizeof(http_info))) == NULL)
444: outofmem(__FILE__, "HTLoadHTTP");
445: http->socket = -1;
1.17 timbl 446:
1.55 frystyk 447: /*
448: ** Compose authorization information (this was moved here
449: ** from after the making of the connection so that the connection
450: ** wouldn't have to wait while prompting username and password
451: ** from the user). -- AL 13.10.93
452: */
453: HTAA_composeAuth(request);
454: if (TRACE) {
455: if (request->authorization)
456: fprintf(stderr, "HTTP........ Sending Authorization: %s\n",
457: request->authorization);
458: else
459: fprintf(stderr, "HTTP........ Not sending authorization (yet)\n");
460: }
461:
462: /* Now let's set up a connection */
463: if ((status = HTDoConnect(request, url, TCP_PORT,
464: &http->socket, NULL)) < 0) {
465: if (TRACE)
466: fprintf(stderr, "HTTP........ Connection not established!\n");
467: if (status != HT_INTERRUPTED) {
468: char *unescaped = NULL;
469: StrAllocCopy(unescaped, url);
470: HTUnEscape(unescaped);
471: HTErrorAdd(request, ERR_FATAL, NO, HTERR_INTERNAL,
472: (void *) unescaped, (int) strlen(unescaped),
473: "HTLoadHTTP");
474: free(unescaped);
475: }
476: HTTPCleanup(request, http);
477: return status;
478: }
479: if (TRACE) fprintf(stderr, "HTTP........ Connected, socket %d\n",
480: http->socket);
481:
482: /* Compose the request and send it over the net */
483: if ((status = HTTPSendRequest(request, http, url)) < 0) {
484: HTTPCleanup(request, http);
485: return status;
486: }
1.2 timbl 487:
1.17 timbl 488: /* Read the response
489: ** -----------------
1.11 timbl 490: **
491: ** HTTP0 servers must return ASCII style text, though it can in
492: ** principle be just text without any markup at all.
493: ** Full HTTP servers must return a response
494: ** line and RFC822 style header. The response must therefore in
495: ** either case have a CRLF somewhere soon.
496: **
497: ** This is the theory. In practice, there are (1993) unfortunately
498: ** many binary documents just served up with HTTP0.9. This
499: ** means we have to preserve the binary buffer (on the assumption that
500: ** conversion from ASCII may lose information) in case it turns
501: ** out that we want the binary original.
1.2 timbl 502: */
1.53 luotonen 503:
504: CTRACE(stderr, "Waiting..... for response\n");
505:
1.37 luotonen 506: if (HTImProxy) {
1.24 luotonen 507:
1.22 luotonen 508: /*
509: ** Server as a gateway -- send body of the message
510: ** received from client (if any).
511: */
512: if (request->isoc && request->content_length > 0) {
513: int remain = request->content_length;
514: int i = remain;
515: char * buf;
516:
517: while (remain > 0 &&
518: (buf = HTInputSocket_getBlock(request->isoc, &i))) {
1.55 frystyk 519: int status = NETWRITE(http->socket, buf, i);
1.22 luotonen 520: if (status < 0) {
1.27 luotonen 521: CTRACE(stderr, "HTTPAccess.. Unable to forward body\n");
1.55 frystyk 522: HTErrorSysAdd(request, ERR_FATAL, NO, "NETWRITE");
523: HTTPCleanup(request, http);
524: return status;
1.22 luotonen 525: }
526: remain -= i;
527: i = remain;
528: }
529: }
1.23 luotonen 530:
531: /*
1.22 luotonen 532: ** Load results directly to client
533: */
1.55 frystyk 534: HTCopy(http->socket, request->output_stream);
1.25 luotonen 535: (*request->output_stream->isa->free)(request->output_stream);
1.55 frystyk 536: HTTPCleanup(request, http);
1.22 luotonen 537: return HT_LOADED;
1.55 frystyk 538: } else { /* read response */
1.21 luotonen 539:
1.17 timbl 540: HTFormat format_in; /* Format arriving in the message */
1.55 frystyk 541: HTInputSocket *isoc = HTInputSocket_new(http->socket);
542: char *status_line = HTInputSocket_getStatusLine(isoc);
1.2 timbl 543:
1.11 timbl 544: /* Kludge to trap binary responses from illegal HTTP0.9 servers.
545: ** First time we have enough, look at the stub in ASCII
546: ** and get out of here if it doesn't look right.
547: **
548: ** We also check for characters above 128 in the first few bytes, and
549: ** if we find them we forget the html default.
550: **
551: ** Bugs: A HTTP0.9 server returning a document starting "HTTP/"
552: ** will be taken as a HTTP 1.0 server. Failure.
553: ** An HTTP 0.9 server returning a binary document with
554: ** characters < 128 will be read as ASCII.
555: */
1.36 frystyk 556: /* If HTTP 0 response, then DO NOT CACHE (Henrik 14/02-94) */
557: if (!status_line) {
1.21 luotonen 558: if (HTInputSocket_seemsBinary(isoc)) {
559: format_in = HTAtom_for("www/unknown");
1.55 frystyk 560: } else {
1.21 luotonen 561: format_in = WWW_HTML;
562: }
1.55 frystyk 563: status = HTTPGetBody(request, http, isoc, format_in, NO);
564: } else {
1.21 luotonen 565: /*
566: ** We now have a terminated server status line, and we have
567: ** checked that it is most probably a legal one. Parse it.
568: */
569: char server_version[VERSION_LENGTH+1];
570: int server_status;
571:
572: if (TRACE)
1.55 frystyk 573: fprintf(stderr, "HTTP Rx..... `%.70s\'\n", status_line);
574: {
575: char formatstr[20];
576: sprintf(formatstr, "%%%ds%%d", VERSION_LENGTH);
577: if (sscanf(status_line, formatstr, server_version,
578: &server_status) < 2) {
579: int length = (int) strlen(status_line);
580: HTErrorAdd(request, ERR_FATAL, NO, HTERR_BAD_REPLY,
581: (void *) status_line, length < 50 ? length : 50,
582: "HTLoadHTTP");
583: HTInputSocket_free(isoc);
584: free(http);
585: free(status_line);
586: return -1; /* Bad response */
587: }
588: *(server_version+VERSION_LENGTH) = '0円';
589: }
1.21 luotonen 590: format_in = HTAtom_for("www/mime");
1.7 timbl 591:
1.55 frystyk 592: /* Big switch for all response codes */
593: switch (server_status/100) {
1.2 timbl 594:
1.55 frystyk 595: case 2: /* Good: Got MIME object */
596: status = HTTPGetBody(request, http, isoc, format_in, YES);
1.21 luotonen 597: break;
1.17 timbl 598:
1.21 luotonen 599: case 3: /* Various forms of redirection */
1.55 frystyk 600: switch (server_status) {
601: case 301: /* Moved */
602: case 302: /* Found */
1.56 frystyk 603: {
604: HTParentAnchor *anchor;
605: if ((anchor = (HTParentAnchor *)
606: HTTPRedirect(request, isoc,
607: server_status)) != NULL) {
608: free(status_line);
609: HTInputSocket_free(isoc);
610: HTTPCleanup(request, http);
611: if (HTLoadAnchor((HTAnchor *) anchor,
612: request) == YES)
613: return HT_LOADED;
614: else
615: return -1;
616: }
617: }
618: break;
1.55 frystyk 619: case 303: /* Method */
1.56 frystyk 620: HTAlert("This client doesn't support automatic redirection of type `Method'");
621: status = -1;
1.55 frystyk 622: break;
623: case 304: /* Not modified Since */
624: {
625: char *unescaped = NULL;
626: StrAllocCopy(unescaped, url);
627: HTUnEscape(unescaped);
1.57 ! frystyk 628: HTErrorAdd(request, ERR_INFO, NO,
1.55 frystyk 629: HTERR_NOT_MODIFIED, (void *) unescaped,
630: (int) strlen(unescaped), "HTLoadHTTP");
631: free(unescaped);
632: }
633: status = HT_LOADED;
634: break;
635:
636: default:
637: {
638: int length = (int) strlen(status_line);
639: HTErrorAdd(request, ERR_FATAL, NO, HTERR_BAD_REPLY,
640: (void *) status_line, length < 50 ?
641: length : 50, "HTLoadHTTP");
642: }
643: status = -1;
644: break;
645: }
1.21 luotonen 646: break;
1.17 timbl 647:
1.21 luotonen 648: case 4: /* Access Authorization problem */
649: switch (server_status) {
650: case 401:
651: parse_401_headers(request, isoc);
652:
653: if (TRACE) fprintf(stderr, "%s %d %s\n",
1.55 frystyk 654: "HTTP: close socket", http->socket,
1.21 luotonen 655: "to retry with Access Authorization");
1.24 luotonen 656: if (HTAA_retryWithAuth(request, HTLoadHTTP)) {
1.21 luotonen 657: status = HT_LOADED;/* @@ THIS ONLY WORKS ON LINEMODE */
1.55 frystyk 658: break;
1.21 luotonen 659: }
660: /* else falltrough */
661: default:
1.14 luotonen 662: {
1.55 frystyk 663: char *unescaped = NULL;
664: StrAllocCopy(unescaped, url);
665: HTUnEscape(unescaped);
666: HTErrorAdd(request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
667: (void *) unescaped,
668: (int) strlen(unescaped), "HTLoadHTTP");
669: free(unescaped);
670: #ifdef OLD_CODE
671: char *p1 = HTParse(url, "", PARSE_HOST);
1.21 luotonen 672: char * message;
673:
674: if (!(message = (char*)malloc(strlen(status_line) +
675: strlen(p1) + 100)))
676: outofmem(__FILE__, "HTTP 4xx status");
1.14 luotonen 677: sprintf(message,
1.21 luotonen 678: "HTTP server at %s replies:\n%s\n\n%s\n",
679: p1, status_line,
680: ((server_status == 401)
681: ? "Access Authorization package giving up.\n"
682: : ""));
1.22 luotonen 683: status = HTLoadError(request, server_status, message);
1.14 luotonen 684: free(message);
685: free(p1);
1.55 frystyk 686: #endif /* OLD_CODE */
1.14 luotonen 687: }
1.55 frystyk 688: status = -1;
689: break;
690: }
1.21 luotonen 691: break;
692:
693: case 5: /* I think you goofed */
694: {
1.55 frystyk 695: char *unescaped = NULL;
696: StrAllocCopy(unescaped, url);
697: HTUnEscape(unescaped);
698: HTErrorAdd(request, ERR_FATAL, NO, HTERR_INTERNAL,
699: (void *) unescaped, (int) strlen(unescaped),
700: "HTLoadHTTP");
701: free(unescaped);
702: #ifdef OLD_CODE
703: char *p1 = HTParse(url, "", PARSE_HOST);
1.21 luotonen 704: char * message = (char*)malloc(strlen(status_line) +
705: strlen(p1) + 100);
706: if (!message) outofmem(__FILE__, "HTTP 5xx status");
707: sprintf(message,
708: "HTTP server at %s replies:\n%s", p1, status_line);
1.22 luotonen 709: status = HTLoadError(request, server_status, message);
1.21 luotonen 710: free(message);
711: free(p1);
1.55 frystyk 712: #endif
1.21 luotonen 713: }
1.55 frystyk 714: status = -1;
1.21 luotonen 715: break;
1.55 frystyk 716:
717: default: /* bad number */
718: {
719: int length = (int) strlen(status_line);
720: HTErrorAdd(request, ERR_FATAL, NO, HTERR_BAD_REPLY,
721: (void *) status_line, length < 50 ? length : 50,
722: "HTLoadHTTP");
723: }
724: status = -1;
1.21 luotonen 725: break;
1.55 frystyk 726: }
727: FREE(status_line); /* Leak fix Henrik 18/02-94 */
1.17 timbl 728: }
1.48 timbl 729:
1.55 frystyk 730: /* Close the socket and free memory */
731: HTInputSocket_free(isoc);
732: HTTPCleanup(request, http);
733: return status; /* Good return */
734: }
735: }
1.1 timbl 736:
737: /* Protocol descriptor
738: */
739:
1.17 timbl 740: GLOBALDEF PUBLIC HTProtocol HTTP = { "http", HTLoadHTTP, 0, 0 };
1.55 frystyk 741:
742:
1.21 luotonen 743:
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