Annotation of libwww/Library/src/HTAccess.c, revision 1.65.2.3
1.61 frystyk 1: /* HTAccess.c
2: ** ACCESS MANAGER
3: **
4: ** (c) COPYRIGHT CERN 1994.
5: ** Please first read the full copyright statement in the file COPYRIGH.
1.1 timbl 6: **
7: ** Authors
8: ** TBL Tim Berners-Lee timbl@info.cern.ch
1.4 timbl 9: ** JFG Jean-Francois Groff jfg@dxcern.cern.ch
1.1 timbl 10: ** DD Denis DeLaRoca (310) 825-4580 <CSP1DWD@mvs.oac.ucla.edu>
11: ** History
12: ** 8 Jun 92 Telnet hopping prohibited as telnet is not secure TBL
13: ** 26 Jun 92 When over DECnet, suppressed FTP, Gopher and News. JFG
1.42 frystyk 14: ** 6 Oct 92 Moved HTClientHost and HTlogfile into here. TBL
1.1 timbl 15: ** 17 Dec 92 Tn3270 added, bug fix. DD
1.2 timbl 16: ** 4 Feb 93 Access registration, Search escapes bad chars TBL
1.9 timbl 17: ** PARAMETERS TO HTSEARCH AND HTLOADRELATIVE CHANGED
18: ** 28 May 93 WAIS gateway explicit if no WAIS library linked in.
1.19 timbl 19: ** Dec 93 Bug change around, more reentrant, etc
1.42 frystyk 20: ** 09 May 94 logfile renamed to HTlogfile to avoid clash with WAIS
1.53 duns 21: ** 8 Jul 94 Insulate free() from _free structure element.
1.2 timbl 22: ** Bugs
23: ** This module assumes that that the graphic object is hypertext, as it
1.9 timbl 24: ** needs to select it when it has been loaded. A superclass needs to be
1.2 timbl 25: ** defined which accepts select and select_anchor.
1.1 timbl 26: */
27:
1.9 timbl 28: #ifndef DEFAULT_WAIS_GATEWAY
1.8 timbl 29: #define DEFAULT_WAIS_GATEWAY "http://info.cern.ch:8001/"
1.54 frystyk 30: #endif
1.8 timbl 31:
1.1 timbl 32: /* Implements:
33: */
34: #include "HTAccess.h"
35:
36: /* Uses:
37: */
38:
39: #include "HTParse.h"
40: #include "HTUtils.h"
1.4 timbl 41: #include "HTML.h" /* SCW */
1.2 timbl 42:
43: #ifndef NO_RULES
44: #include "HTRules.h"
45: #endif
46:
47: #include "HTList.h"
48: #include "HText.h" /* See bugs above */
49: #include "HTAlert.h"
1.17 timbl 50: #include "HTFWriter.h" /* for cache stuff */
51: #include "HTTee.h"
1.46 frystyk 52: #include "HTError.h"
1.57 howcome 53: #include "HTTCP.h" /* HWL: for HTFindRelatedName */
1.63 frystyk 54: #include "HTFile.h"
1.59 frystyk 55: #include "HTThread.h"
1.63 frystyk 56: #include "HTEvent.h"
1.2 timbl 57:
1.54 frystyk 58: /* These flags may be set to modify the operation of this module */
59: PUBLIC char * HTCacheDir = NULL; /* Root for cached files or 0 for no cache */
60: PUBLIC char * HTSaveLocallyDir = SAVE_LOCALLY_HOME_DIR; /* Save & exe files */
61: PUBLIC char * HTClientHost = 0; /* Name of remote login host if any */
62: PUBLIC FILE * HTlogfile = 0; /* File to which to output one-liners */
1.41 luotonen 63:
1.34 frystyk 64: PUBLIC BOOL HTForceReload = NO; /* Force reload from cache or net */
1.12 timbl 65: PUBLIC BOOL HTSecure = NO; /* Disable access for telnet users? */
1.27 luotonen 66: PUBLIC BOOL using_proxy = NO; /* are we using a proxy gateway? */
1.43 luotonen 67: PUBLIC char * HTImServer = NULL;/* cern_httpd sets this to the translated URL*/
1.27 luotonen 68: PUBLIC BOOL HTImProxy = NO; /* cern_httpd as a proxy? */
1.1 timbl 69:
1.63 frystyk 70: PRIVATE HTList * protocols = NULL; /* List of registered protocols */
1.43 luotonen 71:
1.63 frystyk 72: /* Superclass defn */
1.24 timbl 73: struct _HTStream {
74: HTStreamClass * isa;
75: /* ... */
76: };
77:
1.59 frystyk 78: /* --------------------------------------------------------------------------*/
79: /* Management of the HTRequest structure */
80: /* --------------------------------------------------------------------------*/
81:
1.15 timbl 82: /* Create a request structure
83: ** ---------------------------
84: */
85: PUBLIC HTRequest * HTRequest_new NOARGS
86: {
1.28 luotonen 87: HTRequest * me = (HTRequest*) calloc(1, sizeof(*me)); /* zero fill */
1.15 timbl 88: if (!me) outofmem(__FILE__, "HTRequest_new()");
89:
1.20 luotonen 90: me->conversions = HTList_new(); /* No conversions registerd yet */
91: me->output_format = WWW_PRESENT; /* default it to present to user */
92:
1.15 timbl 93: return me;
94: }
95:
96:
1.49 frystyk 97: /* Clear a request structure
98: ** ---------------------------
99: ** This function clears the reguest structure so that only the
100: ** conversions remain. Everything else is as if it was created from
101: ** scratch.
102: */
103: PUBLIC void HTRequest_clear ARGS1(HTRequest *, req)
104: {
105: HTList *conversions;
106: if (!req) {
107: if (TRACE)
108: fprintf(stderr, "Clear....... request: Bad argument!\n");
109: return;
110: }
111: conversions = req->conversions; /* Save the conversions */
112: HTErrorFree(req);
113: HTAACleanup(req);
114: memset(req, '\0', sizeof(HTRequest));
115:
116: /* Now initialize as from scratch but with the old list of conversions */
117: req->conversions = conversions;
118: req->output_format = WWW_PRESENT; /* default it to present to user */
119: }
120:
121:
1.20 luotonen 122: /* Delete a request structure
123: ** --------------------------
124: */
125: PUBLIC void HTRequest_delete ARGS1(HTRequest *, req)
126: {
127: if (req) {
1.59 frystyk 128: FREE(req->redirect);
129: FREE(req->authenticate);
130: HTFormatDelete(req);
1.46 frystyk 131: HTErrorFree(req);
1.34 frystyk 132: HTAACleanup(req);
1.61 frystyk 133:
134: /* These are temporary until we get a MIME thingy */
135: FREE(req->redirect);
136: FREE(req->WWWAAScheme);
137: FREE(req->WWWAARealm);
138: FREE(req->WWWprotection);
139:
1.34 frystyk 140: FREE(req);
1.20 luotonen 141: }
142: }
143:
1.59 frystyk 144: /* --------------------------------------------------------------------------*/
145: /* Management of HTTP Methods */
146: /* --------------------------------------------------------------------------*/
1.20 luotonen 147:
1.22 luotonen 148: PRIVATE char * method_names[(int)MAX_METHODS + 1] =
149: {
150: "INVALID-METHOD",
151: "GET",
152: "HEAD",
153: "POST",
154: "PUT",
155: "DELETE",
156: "CHECKOUT",
157: "CHECKIN",
158: "SHOWMETHOD",
159: "LINK",
160: "UNLINK",
161: NULL
162: };
163:
164: /* Get method enum value
165: ** ---------------------
166: */
167: PUBLIC HTMethod HTMethod_enum ARGS1(char *, name)
168: {
169: if (name) {
170: int i;
171: for (i=1; i < (int)MAX_METHODS; i++)
172: if (!strcmp(name, method_names[i]))
173: return (HTMethod)i;
174: }
175: return METHOD_INVALID;
176: }
177:
178:
179: /* Get method name
180: ** ---------------
181: */
182: PUBLIC char * HTMethod_name ARGS1(HTMethod, method)
183: {
184: if ((int)method > (int)METHOD_INVALID &&
185: (int)method < (int)MAX_METHODS)
186: return method_names[(int)method];
187: else
188: return method_names[(int)METHOD_INVALID];
189: }
190:
191:
192: /* Is method in a list of method names?
193: ** -----------------------------------
194: */
195: PUBLIC BOOL HTMethod_inList ARGS2(HTMethod, method,
196: HTList *, list)
197: {
198: char * method_name = HTMethod_name(method);
199: HTList *cur = list;
200: char *item;
201:
202: while (NULL != (item = (char*)HTList_nextObject(cur))) {
203: CTRACE(stderr, " %s", item);
204: if (0==strcasecomp(item, method_name))
205: return YES;
206: }
207: return NO; /* Not found */
208: }
209:
210:
1.59 frystyk 211: /* --------------------------------------------------------------------------*/
212: /* Management of the HTProtocol structure */
213: /* --------------------------------------------------------------------------*/
1.22 luotonen 214:
1.63 frystyk 215: /*
216: ** Register a Protocol as an active access method
1.1 timbl 217: */
1.56 frystyk 218: PUBLIC BOOL HTRegisterProtocol ARGS1(HTProtocol *, protocol)
1.1 timbl 219: {
220: if (!protocols) protocols = HTList_new();
1.59 frystyk 221: HTList_addObject(protocols, (void *) protocol);
1.1 timbl 222: return YES;
223: }
224:
1.63 frystyk 225:
226: /*
227: ** Delete the list of registered access methods. This is called from
228: ** within HTLibTerminate. Written by Eric Sink, eric@spyglass.com
229: */
230: PUBLIC void HTDisposeProtocols NOARGS
231: {
232: if (protocols) {
233: HTList_delete(protocols);
234: protocols = NULL;
235: }
236: }
237:
238:
239: /*
1.65 frystyk 240: ** Is a protocol registered as BLOCKING? The default behavior registered
241: ** when the protocol module was registered can be overridden by the
242: ** BlockingIO field in the HTRequest structure
1.63 frystyk 243: */
1.59 frystyk 244: PUBLIC BOOL HTProtocolBlocking ARGS1(HTRequest *, me)
245: {
1.65 frystyk 246: if (me) {
247: return (me->BlockingIO || (me->anchor && me->anchor->protocol &&
248: ((HTProtocol *) (me->anchor->protocol))->block == SOC_BLOCK));
249: }
250: return NO;
1.59 frystyk 251: }
252:
1.61 frystyk 253: /* --------------------------------------------------------------------------*/
254: /* Initialization and Termination of the Library */
255: /* --------------------------------------------------------------------------*/
256:
1.1 timbl 257: /* Register all known protocols
258: ** ----------------------------
259: **
1.61 frystyk 260: ** Add to or subtract from this list if you add or remove protocol
261: ** modules. This function is called from HTLibInit()
1.1 timbl 262: **
263: ** Compiling with NO_INIT prevents all known protocols from being forced
264: ** in at link time.
265: */
1.61 frystyk 266: PRIVATE void HTAccessInit NOARGS
1.1 timbl 267: {
1.59 frystyk 268: GLOBALREF HTProtocol HTTP, HTFile, HTTelnet, HTTn3270, HTRlogin;
1.1 timbl 269: #ifndef DECNET
1.54 frystyk 270: #ifdef NEW_CODE
1.59 frystyk 271: GLOBALREF HTProtocol HTFTP, HTNews, HTNNTP, HTGopher;
272: #endif
273: GLOBALREF HTProtocol HTFTP, HTNews, HTGopher;
274: #ifdef DIRECT_WAIS
275: GLOBALREF HTProtocol HTWAIS;
1.54 frystyk 276: #endif
1.42 frystyk 277:
1.2 timbl 278: HTRegisterProtocol(&HTFTP);
279: HTRegisterProtocol(&HTNews);
1.54 frystyk 280: #ifdef NEW_CODE
281: HTRegisterProtocol(&HTNNTP);
282: #endif
1.2 timbl 283: HTRegisterProtocol(&HTGopher);
1.42 frystyk 284:
1.3 timbl 285: #ifdef DIRECT_WAIS
286: HTRegisterProtocol(&HTWAIS);
287: #endif
1.1 timbl 288:
1.54 frystyk 289: #endif /* DECNET */
1.2 timbl 290: HTRegisterProtocol(&HTTP);
291: HTRegisterProtocol(&HTFile);
292: HTRegisterProtocol(&HTTelnet);
293: HTRegisterProtocol(&HTTn3270);
294: HTRegisterProtocol(&HTRlogin);
1.1 timbl 295: }
1.61 frystyk 296:
297:
298: /* HTLibInit
299: **
300: ** This function initiates the Library and it MUST be called when
301: ** starting up an application. See also HTLibTerminate()
302: */
303: PUBLIC BOOL HTLibInit NOARGS
304: {
305: if (TRACE)
306: fprintf(stderr, "WWWLibInit.. INITIALIZING LIBRARY OF COMMON CODE\n");
1.63 frystyk 307:
308: #ifndef NO_INIT
1.61 frystyk 309: if (!protocols)
1.62 frystyk 310: HTAccessInit(); /* Initilizing protocol modules */
1.63 frystyk 311: #endif
1.61 frystyk 312:
1.62 frystyk 313: #ifdef WWWLIB_SIG
1.61 frystyk 314: /* On Solaris (and others?) we get a BROKEN PIPE signal when connecting
315: ** to a port where er should get `connection refused'. We ignore this
316: ** using the following function call
317: */
318: HTSetSignal(); /* Set signals in library */
1.1 timbl 319: #endif
320:
1.61 frystyk 321: HTThreadInit(); /* Initialize bit arrays */
322: return YES;
323: }
324:
325:
326: /* HTLibTerminate
327: **
328: ** This function frees memory kept by the Library and should be called
1.63 frystyk 329: ** before exit of an application (if you are on a PC platform)
1.61 frystyk 330: */
331: PUBLIC BOOL HTLibTerminate NOARGS
332: {
333: if (TRACE)
1.63 frystyk 334: fprintf(stderr, "WWWLibTerm.. Cleaning up LIBRARY OF COMMON CODE\n");
335: HTAtom_deleteAll();
336: HTDisposeProtocols();
337: HTDisposeConversions();
338: HTFile_deleteSuffixes();
339: HTTCPCacheRemoveAll();
340: HTFreeHostName();
341: HTFreeMailAddress();
1.65.2.1 frystyk 342: FREE(HTCacheDir);
1.61 frystyk 343: return YES;
344: }
345:
346:
1.59 frystyk 347: /* --------------------------------------------------------------------------*/
348: /* Physical Anchor Address Manager */
349: /* --------------------------------------------------------------------------*/
1.33 luotonen 350:
351: /* override_proxy()
352: **
353: ** Check the no_proxy environment variable to get the list
354: ** of hosts for which proxy server is not consulted.
355: **
356: ** no_proxy is a comma- or space-separated list of machine
357: ** or domain names, with optional :port part. If no :port
358: ** part is present, it applies to all ports on that domain.
359: **
360: ** Example:
361: ** no_proxy="cern.ch,some.domain:8001"
362: **
363: */
364: PRIVATE BOOL override_proxy ARGS1(CONST char *, addr)
365: {
366: CONST char * no_proxy = getenv("no_proxy");
367: char * p = NULL;
368: char * host = NULL;
369: int port = 0;
370: int h_len = 0;
371:
372: if (!no_proxy || !addr || !(host = HTParse(addr, "", PARSE_HOST)))
373: return NO;
374: if (!*host) { free(host); return NO; }
375:
1.34 frystyk 376: if ((p = strchr(host, ':')) != NULL) { /* Port specified */
1.33 luotonen 377: *p++ = 0; /* Chop off port */
378: port = atoi(p);
379: }
380: else { /* Use default port */
381: char * access = HTParse(addr, "", PARSE_ACCESS);
382: if (access) {
383: if (!strcmp(access,"http")) port = 80;
384: else if (!strcmp(access,"gopher")) port = 70;
385: else if (!strcmp(access,"ftp")) port = 21;
386: free(access);
387: }
388: }
389: if (!port) port = 80; /* Default */
390: h_len = strlen(host);
391:
392: while (*no_proxy) {
393: CONST char * end;
394: CONST char * colon = NULL;
395: int templ_port = 0;
396: int t_len;
397:
398: while (*no_proxy && (WHITE(*no_proxy) || *no_proxy==','))
399: no_proxy++; /* Skip whitespace and separators */
400:
401: end = no_proxy;
402: while (*end && !WHITE(*end) && *end != ',') { /* Find separator */
403: if (*end==':') colon = end; /* Port number given */
404: end++;
405: }
406:
407: if (colon) {
408: templ_port = atoi(colon+1);
409: t_len = colon - no_proxy;
410: }
411: else {
412: t_len = end - no_proxy;
413: }
414:
415: if ((!templ_port || templ_port == port) &&
416: (t_len > 0 && t_len <= h_len &&
417: !strncmp(host + h_len - t_len, no_proxy, t_len))) {
418: free(host);
419: return YES;
420: }
421: if (*end) no_proxy = end+1;
422: else break;
423: }
424:
425: free(host);
426: return NO;
427: }
428:
429:
430:
1.2 timbl 431: /* Find physical name and access protocol
432: ** --------------------------------------
1.1 timbl 433: **
434: **
435: ** On entry,
436: ** addr must point to the fully qualified hypertext reference.
437: ** anchor a pareent anchor with whose address is addr
438: **
1.59 frystyk 439: ** On exit,
440: ** returns HT_NO_ACCESS no protocol module found
441: ** HT_FORBIDDEN Error has occured.
1.2 timbl 442: ** HT_OK Success
1.1 timbl 443: **
444: */
1.21 luotonen 445: PRIVATE int get_physical ARGS1(HTRequest *, req)
446: {
1.1 timbl 447: char * access=0; /* Name of access method */
1.21 luotonen 448: char * addr = HTAnchor_address((HTAnchor*)req->anchor); /* free me */
1.27 luotonen 449:
1.2 timbl 450: #ifndef NO_RULES
1.47 luotonen 451: if (HTImServer) { /* cern_httpd has already done its own translations */
1.45 luotonen 452: HTAnchor_setPhysical(req->anchor, HTImServer);
1.47 luotonen 453: StrAllocCopy(addr, HTImServer); /* Oops, queries thru many proxies */
454: /* didn't work without this -- AL */
455: }
1.21 luotonen 456: else {
1.27 luotonen 457: char * physical = HTTranslate(addr);
1.21 luotonen 458: if (!physical) {
1.47 luotonen 459: free(addr);
1.21 luotonen 460: return HT_FORBIDDEN;
461: }
462: HTAnchor_setPhysical(req->anchor, physical);
463: free(physical); /* free our copy */
1.2 timbl 464: }
465: #else
1.21 luotonen 466: HTAnchor_setPhysical(req->anchor, addr);
1.2 timbl 467: #endif
468:
1.21 luotonen 469: access = HTParse(HTAnchor_physical(req->anchor),
1.27 luotonen 470: "file:", PARSE_ACCESS);
1.1 timbl 471:
472: /* Check whether gateway access has been set up for this
1.8 timbl 473: **
474: ** This function can be replaced by the rule system above.
1.1 timbl 475: */
1.8 timbl 476: #define USE_GATEWAYS
1.1 timbl 477: #ifdef USE_GATEWAYS
1.39 luotonen 478:
479: /* make sure the using_proxy variable is false */
480: using_proxy = NO;
481:
1.33 luotonen 482: if (!override_proxy(addr)) {
1.27 luotonen 483: char * gateway_parameter, *gateway, *proxy;
484:
1.2 timbl 485: gateway_parameter = (char *)malloc(strlen(access)+20);
486: if (gateway_parameter == NULL) outofmem(__FILE__, "HTLoad");
1.27 luotonen 487:
488: /* search for proxy gateways */
1.2 timbl 489: strcpy(gateway_parameter, "WWW_");
490: strcat(gateway_parameter, access);
491: strcat(gateway_parameter, "_GATEWAY");
492: gateway = (char *)getenv(gateway_parameter); /* coerce for decstation */
1.27 luotonen 493:
494: /* search for proxy servers */
495: strcpy(gateway_parameter, access);
496: strcat(gateway_parameter, "_proxy");
497: proxy = (char *)getenv(gateway_parameter);
498:
1.2 timbl 499: free(gateway_parameter);
1.27 luotonen 500:
501: if (TRACE && gateway)
1.60 frystyk 502: fprintf(stderr,"Gateway..... Found: `%s\'\n", gateway);
1.27 luotonen 503: if (TRACE && proxy)
1.60 frystyk 504: fprintf(stderr,"Proxy....... Found: `%s\'\n", proxy);
1.27 luotonen 505:
1.8 timbl 506: #ifndef DIRECT_WAIS
1.9 timbl 507: if (!gateway && 0==strcmp(access, "wais")) {
1.8 timbl 508: gateway = DEFAULT_WAIS_GATEWAY;
509: }
510: #endif
1.27 luotonen 511:
512: /* proxy servers have precedence over gateway servers */
1.60 frystyk 513: if (proxy && *proxy) {
1.27 luotonen 514: char * gatewayed=0;
515:
516: StrAllocCopy(gatewayed,proxy);
517: StrAllocCat(gatewayed,addr);
518: using_proxy = YES;
519: HTAnchor_setPhysical(req->anchor, gatewayed);
520: free(gatewayed);
521: free(access);
522:
523: access = HTParse(HTAnchor_physical(req->anchor),
524: "http:", PARSE_ACCESS);
1.60 frystyk 525: } else if (gateway && *gateway) {
1.9 timbl 526: char * path = HTParse(addr, "",
527: PARSE_HOST + PARSE_PATH + PARSE_PUNCTUATION);
528: /* Chop leading / off to make host into part of path */
529: char * gatewayed = HTParse(path+1, gateway, PARSE_ALL);
530: free(path);
1.21 luotonen 531: HTAnchor_setPhysical(req->anchor, gatewayed);
1.9 timbl 532: free(gatewayed);
1.2 timbl 533: free(access);
1.9 timbl 534:
1.21 luotonen 535: access = HTParse(HTAnchor_physical(req->anchor),
1.8 timbl 536: "http:", PARSE_ACCESS);
1.2 timbl 537: }
538: }
1.1 timbl 539: #endif
540:
1.19 timbl 541: free(addr);
1.1 timbl 542:
1.61 frystyk 543: /* Search registered protocols to find suitable one */
1.1 timbl 544: {
1.61 frystyk 545: HTList *cur = protocols;
1.20 luotonen 546: HTProtocol *p;
1.61 frystyk 547: if (!cur) {
548: if (TRACE)
549: fprintf(stderr, "HTAccess.... NO PROTOCOL MODULES INITIATED\n");
550: } else {
551: while ((p = (HTProtocol*)HTList_nextObject(cur))) {
552: if (strcmp(p->name, access)==0) {
553: HTAnchor_setProtocol(req->anchor, p);
554: free(access);
555: return (HT_OK);
556: }
1.1 timbl 557: }
558: }
559: }
560: free(access);
1.2 timbl 561: return HT_NO_ACCESS;
1.1 timbl 562: }
563:
1.59 frystyk 564: /* --------------------------------------------------------------------------*/
565: /* Document Poster */
566: /* --------------------------------------------------------------------------*/
567:
568: /* Get a save stream for a document
569: ** --------------------------------
570: */
571: PUBLIC HTStream *HTSaveStream ARGS1(HTRequest *, request)
572: {
573: HTProtocol * p;
574: int status;
575: request->method = METHOD_PUT;
576: status = get_physical(request);
577: if (status == HT_FORBIDDEN) {
578: char *url = HTAnchor_address((HTAnchor *) request->anchor);
579: if (url) {
580: HTUnEscape(url);
581: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
582: (void *) url, (int) strlen(url), "HTLoad");
583: free(url);
584: } else {
585: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
586: NULL, 0, "HTLoad");
587: }
588: return NULL; /* should return error status? */
589: }
590: if (status < 0) return NULL; /* @@ error. Can't resolve or forbidden */
591:
592: p = (HTProtocol *) HTAnchor_protocol(request->anchor);
593: if (!p) return NULL;
594:
595: return (*p->saveStream)(request);
596:
597: }
598:
599:
600: /* --------------------------------------------------------------------------*/
601: /* Document Loader */
602: /* --------------------------------------------------------------------------*/
1.1 timbl 603:
604: /* Load a document
605: ** ---------------
606: **
1.2 timbl 607: ** This is an internal routine, which has an address AND a matching
608: ** anchor. (The public routines are called with one OR the other.)
609: **
610: ** On entry,
1.15 timbl 611: ** request->
1.35 luotonen 612: ** anchor a parent anchor with fully qualified
613: ** hypertext reference as its address set
1.15 timbl 614: ** output_format valid
615: ** output_stream valid on NULL
1.2 timbl 616: **
617: ** On exit,
1.59 frystyk 618: ** returns HT_WOULD_BLOCK An I/O operation would block
619: ** HT_ERROR Error has occured
1.2 timbl 620: ** HT_LOADED Success
621: ** HT_NO_DATA Success, but no document loaded.
1.8 timbl 622: ** (telnet sesssion started etc)
1.2 timbl 623: **
624: */
1.52 frystyk 625: PUBLIC int HTLoad ARGS2(HTRequest *, request, BOOL, keep_error_stack)
1.2 timbl 626: {
1.25 frystyk 627: char *arg = NULL;
628: HTProtocol *p;
629: int status;
630:
1.22 luotonen 631: if (request->method == METHOD_INVALID)
632: request->method = METHOD_GET;
1.52 frystyk 633: if (!keep_error_stack) {
634: HTErrorFree(request);
635: request->error_block = NO;
636: }
637:
1.59 frystyk 638: if ((status = get_physical(request)) < 0) {
639: if (status == HT_FORBIDDEN) {
640: char *url = HTAnchor_address((HTAnchor *) request->anchor);
641: if (url) {
642: HTUnEscape(url);
643: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
644: (void *) url, (int) strlen(url), "HTLoad");
645: free(url);
646: } else {
647: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
648: NULL, 0, "HTLoad");
649: }
650: }
651: return HT_ERROR; /* Can't resolve or forbidden */
1.2 timbl 652: }
1.25 frystyk 653:
654: if(!(arg = HTAnchor_physical(request->anchor)) || !*arg)
1.59 frystyk 655: return HT_ERROR;
1.27 luotonen 656:
1.56 frystyk 657: p = (HTProtocol *) HTAnchor_protocol(request->anchor);
1.17 timbl 658: return (*(p->load))(request);
1.2 timbl 659: }
660:
661:
1.61 frystyk 662: /* Terminate a LOAD
663: ** ----------------
664: **
665: ** This function looks at the status code from the HTLoadDocument
666: ** function and updates logfiles, creates error messages etc.
667: **
668: ** On Entry,
669: ** Status code from load function
670: */
671: PUBLIC BOOL HTLoadTerminate ARGS2(HTRequest *, request, int, status)
672: {
673: char * uri = HTAnchor_address((HTAnchor*)request->anchor);
674:
675: /* Log the access if necessary */
676: if (HTlogfile) {
677: time_t theTime;
678: time(&theTime);
679: fprintf(HTlogfile, "%24.24s %s %s %s\n",
680: ctime(&theTime),
681: HTClientHost ? HTClientHost : "local",
682: status<0 ? "FAIL" : "GET", uri);
683: fflush(HTlogfile); /* Actually update it on disk */
684: if (PROT_TRACE) fprintf(stderr, "Log: %24.24s %s %s %s\n",
685: ctime(&theTime),
686: HTClientHost ? HTClientHost : "local",
687: status<0 ? "FAIL" : "GET", uri);
688: }
689:
690: /* The error stack might contain general information to the client
691: about what has been going on in the library (not only errors) */
692: if (!HTImProxy && request->error_stack)
693: HTErrorMsg(request);
694:
695: switch (status) {
696: case HT_LOADED:
697: if (PROT_TRACE) {
698: fprintf(stderr, "HTAccess.... OK: `%s' has been accessed.\n", uri);
699: }
700: break;
701:
702: case HT_NO_DATA:
703: if (PROT_TRACE) {
704: fprintf(stderr, "HTAccess.... OK BUT NO DATA: `%s'\n", uri);
705: }
706: break;
707:
708: case HT_WOULD_BLOCK:
709: if (PROT_TRACE) {
710: fprintf(stderr, "HTAccess.... WOULD BLOCK: `%s'\n", uri);
711: }
712: break;
713:
714: case HT_ERROR:
715: if (HTImProxy)
716: HTErrorMsg(request); /* Only on a real error */
717: if (PROT_TRACE) {
718: fprintf(stderr, "HTAccess.... ERROR: Can't access `%s'\n", uri);
719: }
720: break;
721:
722: default:
723: if (PROT_TRACE) {
1.65.2.2 frystyk 724: fprintf(stderr, "HTAccess.... **** Internal software error in CERN WWWLib version %s ****\n", HTLibraryVersion);
725: fprintf(stderr, "............ Please mail libwww@info.cern.ch quoting what software\n");
726: fprintf(stderr, "............ and version you are using including the URL:\n");
727: fprintf(stderr, "............ `%s\'\n", uri);
728: fprintf(stderr, "............ that caused the problem, thanks!\n");
1.61 frystyk 729: }
730: break;
731: }
732: free(uri);
733: return YES;
734: }
735:
736:
1.2 timbl 737: /* Load a document - with logging etc
738: ** ----------------------------------
739: **
740: ** - Checks or documents already loaded
741: ** - Logs the access
742: ** - Trace ouput and error messages
743: **
1.1 timbl 744: ** On Entry,
1.19 timbl 745: ** request->anchor valid for of the document to be accessed.
746: ** request->childAnchor optional anchor within doc to be selected
747: **
1.15 timbl 748: ** request->anchor is the node_anchor for the document
749: ** request->output_format is valid
750: **
1.59 frystyk 751: ** On exit,
752: ** returns HT_WOULD_BLOCK An I/O operation would block
753: ** HT_ERROR Error has occured
754: ** HT_LOADED Success
755: ** HT_NO_DATA Success, but no document loaded.
756: ** (telnet sesssion started etc)
1.1 timbl 757: */
1.59 frystyk 758: PRIVATE int HTLoadDocument ARGS2(HTRequest *, request,
759: BOOL, keep_error_stack)
1.1 timbl 760:
761: {
762: int status;
763: HText * text;
1.19 timbl 764: char * full_address = HTAnchor_address((HTAnchor*)request->anchor);
1.54 frystyk 765:
1.59 frystyk 766: if (PROT_TRACE) fprintf (stderr, "HTAccess.... Loading document %s\n",
767: full_address);
1.1 timbl 768:
1.18 timbl 769: request->using_cache = NULL;
770:
1.15 timbl 771: if (!request->output_format) request->output_format = WWW_PRESENT;
1.25 frystyk 772:
1.65.2.3! frystyk 773: /* Check if document is already loaded or in cache */
! 774: if (!HTForceReload) {
! 775: if ((text=(HText *)HTAnchor_document(request->anchor))) {
! 776: if (PROT_TRACE)
! 777: fprintf(stderr, "HTAccess.... Document already in memory.\n");
! 778: if (request->childAnchor) {
! 779: HText_selectAnchor(text, request->childAnchor);
! 780: } else {
! 781: HText_select(text);
! 782: }
! 783: free(full_address);
! 784: return HT_LOADED;
1.19 timbl 785: }
1.65.2.3! frystyk 786:
! 787: /* Check the Cache */
! 788: /* Bug: for each format, we only check whether it is ok, we
! 789: don't check them all and chose the best */
! 790: if (request->anchor->cacheItems) {
! 791: HTList * list = request->anchor->cacheItems;
! 792: HTList * cur = list;
! 793: HTCacheItem * item;
! 794: while ((item = (HTCacheItem*)HTList_nextObject(cur))) {
! 795: HTStream * s;
! 796: request->using_cache = item;
! 797: s = HTStreamStack(item->format, request->output_format,
! 798: request->output_stream, request, NO);
! 799: if (s) { /* format was suitable */
! 800: FILE * fp = fopen(item->filename, "r");
! 801: if (PROT_TRACE)
! 802: fprintf(stderr, "Cache...... HIT file %s for %s\n",
! 803: item->filename,
! 804: full_address);
! 805: if (fp) {
! 806: HTFileCopy(fp, s);
! 807: (*s->isa->_free)(s); /* close up pipeline */
! 808: fclose(fp);
! 809: free(full_address);
! 810: return HT_LOADED;
! 811: } else {
! 812: fprintf(stderr, "***** Can't read cache file %s !\n",
! 813: item->filename);
! 814: } /* file open ok */
! 815: } /* stream ok */
! 816: } /* next cache item */
! 817: } /* if cache available for this anchor */
1.1 timbl 818: }
1.61 frystyk 819: if ((status = HTLoad(request, keep_error_stack)) != HT_WOULD_BLOCK)
820: HTLoadTerminate(request, status);
1.19 timbl 821: free(full_address);
1.59 frystyk 822: return status;
1.58 frystyk 823: }
1.1 timbl 824:
825:
826: /* Load a document from absolute name
827: ** ---------------
828: **
1.59 frystyk 829: ** On Entry,
1.1 timbl 830: ** addr The absolute address of the document to be accessed.
831: **
1.59 frystyk 832: ** On exit,
833: ** returns HT_WOULD_BLOCK An I/O operation would block
834: ** HT_ERROR Error has occured
835: ** HT_LOADED Success
836: ** HT_NO_DATA Success, but no document loaded.
837: ** (telnet sesssion started etc)
1.1 timbl 838: */
839:
1.59 frystyk 840: PUBLIC int HTLoadAbsolute ARGS2(CONST char *,addr, HTRequest*, request)
1.2 timbl 841: {
1.19 timbl 842: HTAnchor * anchor = HTAnchor_findAddress(addr);
843: request->anchor = HTAnchor_parent(anchor);
844: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ?
845: NULL : (HTChildAnchor*) anchor;
1.52 frystyk 846: return HTLoadDocument(request, NO);
1.2 timbl 847: }
848:
849:
850: /* Load a document from absolute name to stream
851: ** --------------------------------------------
852: **
1.59 frystyk 853: ** On Entry,
1.2 timbl 854: ** addr The absolute address of the document to be accessed.
1.15 timbl 855: ** request->output_stream if non-NULL, send data down this stream
1.2 timbl 856: **
1.59 frystyk 857: ** On exit,
858: ** returns HT_WOULD_BLOCK An I/O operation would block
859: ** HT_ERROR Error has occured
860: ** HT_LOADED Success
861: ** HT_NO_DATA Success, but no document loaded.
862: ** (telnet sesssion started etc)
1.2 timbl 863: */
864:
1.59 frystyk 865: PUBLIC int HTLoadToStream ARGS3(CONST char *, addr,
866: BOOL, filter,
867: HTRequest*, request)
1.1 timbl 868: {
1.63 frystyk 869: HTAnchor * anchor = HTAnchor_findAddress(addr);
870: request->anchor = HTAnchor_parent(anchor);
871: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ? NULL :
1.19 timbl 872: (HTChildAnchor*) anchor;
1.15 timbl 873: request->output_stream = request->output_stream;
1.52 frystyk 874: return HTLoadDocument(request, NO);
1.1 timbl 875: }
876:
877:
878: /* Load a document from relative name
879: ** ---------------
880: **
1.59 frystyk 881: ** On Entry,
1.2 timbl 882: ** relative_name The relative address of the document
883: ** to be accessed.
1.1 timbl 884: **
1.59 frystyk 885: ** On exit,
886: ** returns HT_WOULD_BLOCK An I/O operation would block
887: ** HT_ERROR Error has occured
888: ** HT_LOADED Success
889: ** HT_NO_DATA Success, but no document loaded.
890: ** (telnet sesssion started etc)
1.1 timbl 891: */
892:
1.59 frystyk 893: PUBLIC int HTLoadRelative ARGS3(CONST char *, relative_name,
894: HTParentAnchor *, here,
895: HTRequest *, request)
1.1 timbl 896: {
897: char * full_address = 0;
1.65 frystyk 898: int result;
1.1 timbl 899: char * mycopy = 0;
900: char * stripped = 0;
901: char * current_address =
1.2 timbl 902: HTAnchor_address((HTAnchor*)here);
1.1 timbl 903:
904: StrAllocCopy(mycopy, relative_name);
905:
906: stripped = HTStrip(mycopy);
907: full_address = HTParse(stripped,
908: current_address,
909: PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
1.15 timbl 910: result = HTLoadAbsolute(full_address, request);
1.1 timbl 911: free(full_address);
912: free(current_address);
913: free(mycopy); /* Memory leak fixed 10/7/92 -- JFG */
914: return result;
915: }
916:
917:
918: /* Load if necessary, and select an anchor
919: ** --------------------------------------
920: **
1.59 frystyk 921: ** On Entry,
1.1 timbl 922: ** destination The child or parenet anchor to be loaded.
923: **
1.59 frystyk 924: ** On exit,
925: ** returns HT_WOULD_BLOCK An I/O operation would block
926: ** HT_ERROR Error has occured
927: ** HT_LOADED Success
928: ** HT_NO_DATA Success, but no document loaded.
929: ** (telnet sesssion started etc)
1.1 timbl 930: */
931:
1.59 frystyk 932: PUBLIC int HTLoadAnchor ARGS2(HTAnchor*, anchor, HTRequest *, request)
1.1 timbl 933: {
1.59 frystyk 934: if (!anchor) return HT_ERROR; /* No link */
1.1 timbl 935:
1.15 timbl 936: request->anchor = HTAnchor_parent(anchor);
1.59 frystyk 937: request->childAnchor = ((HTAnchor *) request->anchor == anchor) ?
938: NULL : (HTChildAnchor*) anchor;
939: return HTLoadDocument(request, NO);
940: }
1.52 frystyk 941:
942:
943: /* Load if necessary, and select an anchor
944: ** --------------------------------------
945: **
946: ** This function is almost identical to HTLoadAnchor, but it doesn't
947: ** clear the error stack so that the information in there is kept.
948: **
1.59 frystyk 949: ** On Entry,
1.52 frystyk 950: ** destination The child or parenet anchor to be loaded.
951: **
1.59 frystyk 952: ** On exit,
953: ** returns HT_WOULD_BLOCK An I/O operation would block
954: ** HT_ERROR Error has occured
955: ** HT_LOADED Success
956: ** HT_NO_DATA Success, but no document loaded.
957: ** (telnet sesssion started etc)
1.52 frystyk 958: */
959:
1.59 frystyk 960: PUBLIC int HTLoadAnchorRecursive ARGS2(HTAnchor*, anchor,
961: HTRequest *, request)
1.52 frystyk 962: {
1.59 frystyk 963: if (!anchor) return HT_ERROR; /* No link */
1.52 frystyk 964:
965: request->anchor = HTAnchor_parent(anchor);
1.59 frystyk 966: request->childAnchor = ((HTAnchor *) request->anchor == anchor) ?
967: NULL : (HTChildAnchor*) anchor;
1.52 frystyk 968:
1.59 frystyk 969: return HTLoadDocument(request, YES);
970: }
1.1 timbl 971:
972:
973: /* Search
974: ** ------
975: ** Performs a keyword search on word given by the user. Adds the keyword to
976: ** the end of the current address and attempts to open the new address.
977: **
978: ** On Entry,
979: ** *keywords space-separated keyword list or similar search list
1.2 timbl 980: ** here is anchor search is to be done on.
1.59 frystyk 981: **
982: ** On exit,
983: ** returns HT_WOULD_BLOCK An I/O operation would block
984: ** HT_ERROR Error has occured
985: ** HT_LOADED Success
986: ** HT_NO_DATA Success, but no document loaded.
987: ** (telnet sesssion started etc)
1.1 timbl 988: */
989:
1.56 frystyk 990: PRIVATE char hex ARGS1(int, i)
1.2 timbl 991: {
1.13 timbl 992: char * hexchars = "0123456789ABCDEF";
993: return hexchars[i];
1.2 timbl 994: }
1.1 timbl 995:
1.59 frystyk 996: PUBLIC int HTSearch ARGS3(CONST char *, keywords,
997: HTParentAnchor *, here,
998: HTRequest *, request)
1.1 timbl 999: {
1.2 timbl 1000:
1001: #define acceptable \
1002: "1234567890abcdefghijlkmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_"
1003:
1004: char *q, *u;
1005: CONST char * p, *s, *e; /* Pointers into keywords */
1006: char * address = HTAnchor_address((HTAnchor*)here);
1.65 frystyk 1007: int result;
1.56 frystyk 1008: char * escaped = (char *) malloc(strlen(keywords)*3+1);
1.2 timbl 1009:
1.29 frystyk 1010: /* static CONST BOOL isAcceptable[96] = */
1011: /* static AND const is not good for a gnu compiler! Frystyk 25/02-94 */
1.30 luotonen 1012: static BOOL isAcceptable[96] =
1.2 timbl 1013: /* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
1014: { 0,0,0,0,0,0,0,0,0,0,1,0,0,1,1,0, /* 2x !"#$%&'()*+,-./ */
1015: 1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0, /* 3x 0123456789:;<=>? */
1016: 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 4x @ABCDEFGHIJKLMNO */
1017: 1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,1, /* 5X PQRSTUVWXYZ[\]^_ */
1018: 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 6x `abcdefghijklmno */
1019: 1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0 }; /* 7X pqrstuvwxyz{\}~ DEL */
1020:
1021: if (escaped == NULL) outofmem(__FILE__, "HTSearch");
1022:
1.29 frystyk 1023: /* Convert spaces to + and hex escape unacceptable characters */
1.2 timbl 1024:
1.29 frystyk 1025: for(s=keywords; *s && WHITE(*s); s++); /*scan */ /* Skip white space */
1026: for(e = s + strlen(s); e>s && WHITE(*(e-1)) ; e--); /* Skip trailers */
1027: for(q=escaped, p=s; p<e; p++) { /* scan stripped field */
1.2 timbl 1028: int c = (int)TOASCII(*p);
1029: if (WHITE(*p)) {
1030: *q++ = '+';
1.29 frystyk 1031: } else if (c>=32 && c<=127 && isAcceptable[c-32] != 0) {
1.13 timbl 1032: *q++ = *p; /* 930706 TBL for MVS bug */
1.2 timbl 1033: } else {
1034: *q++ = '%';
1035: *q++ = hex(c / 16);
1036: *q++ = hex(c % 16);
1037: }
1038: } /* Loop over string */
1.1 timbl 1039:
1.2 timbl 1040: *q=0;
1041: /* terminate escaped sctring */
1042: u=strchr(address, '?'); /* Find old search string */
1043: if (u) *u = 0; /* Chop old search off */
1.1 timbl 1044:
1045: StrAllocCat(address, "?");
1.2 timbl 1046: StrAllocCat(address, escaped);
1047: free(escaped);
1.15 timbl 1048: result = HTLoadRelative(address, here, request);
1.1 timbl 1049: free(address);
1.2 timbl 1050:
1.1 timbl 1051: return result;
1.2 timbl 1052: }
1053:
1054:
1055: /* Search Given Indexname
1056: ** ------
1057: ** Performs a keyword search on word given by the user. Adds the keyword to
1058: ** the end of the current address and attempts to open the new address.
1059: **
1.59 frystyk 1060: ** On Entry,
1.2 timbl 1061: ** *keywords space-separated keyword list or similar search list
1062: ** *addres is name of object search is to be done on.
1.59 frystyk 1063: ** On exit,
1064: ** returns HT_WOULD_BLOCK An I/O operation would block
1065: ** HT_ERROR Error has occured
1066: ** HT_LOADED Success
1067: ** HT_NO_DATA Success, but no document loaded.
1068: ** (telnet sesssion started etc)
1.2 timbl 1069: */
1070:
1.59 frystyk 1071: PUBLIC int HTSearchAbsolute ARGS3(CONST char *, keywords,
1072: CONST char *, indexname,
1073: HTRequest *, request)
1.2 timbl 1074: {
1075: HTParentAnchor * anchor =
1076: (HTParentAnchor*) HTAnchor_findAddress(indexname);
1.15 timbl 1077: return HTSearch(keywords, anchor, request);
1.57 howcome 1078: }
1079:
1080:
1081: /*
1082: ** Find Related Name
1083: **
1084: ** Creates a string that can be used as a related name when
1085: ** calling HTParse initially.
1086: **
1087: ** The code for this routine originates from the Linemode
1088: ** browser and was moved here by howcome@dxcern.cern.ch
1089: ** in order for all clients to take advantage.
1090: **
1.59 frystyk 1091: ** The string returned must be freed by the caller
1.57 howcome 1092: */
1093: PUBLIC char * HTFindRelatedName NOARGS
1094: {
1.59 frystyk 1095: char* default_default = NULL; /* Parse home relative to this */
1096: CONST char *host = HTGetHostName();
1.57 howcome 1097: StrAllocCopy(default_default, "file://");
1.59 frystyk 1098: if (host)
1099: StrAllocCat(default_default, host);
1100: else
1101: StrAllocCat(default_default, "localhost");
1102: {
1103: char wd[HT_MAX_PATH+1];
1.57 howcome 1104:
1.59 frystyk 1105: #ifdef NO_GETWD
1106: #ifdef HAS_GETCWD /* System V variant SIGN CHANGED TBL 921006 !! */
1107: char *result = (char *) getcwd(wd, sizeof(wd));
1108: #else
1109: char *result = NULL;
1110: HTAlert("This platform does not support neither getwd nor getcwd\n");
1.57 howcome 1111: #endif
1.59 frystyk 1112: #else
1113: char *result = (char *) getwd(wd);
1114: #endif
1115: *(wd+HT_MAX_PATH) = '\0';
1.57 howcome 1116: if (result) {
1117: #ifdef VMS
1118: /* convert directory name to Unix-style syntax */
1119: char * disk = strchr (wd, ':');
1120: char * dir = strchr (wd, '[');
1121: if (disk) {
1122: *disk = '\0';
1123: StrAllocCat (default_default, "/"); /* needs delimiter */
1124: StrAllocCat (default_default, wd);
1125: }
1126: if (dir) {
1127: char *p;
1128: *dir = '/'; /* Convert leading '[' */
1129: for (p = dir ; *p != ']'; ++p)
1130: if (*p == '.') *p = '/';
1131: *p = '\0'; /* Cut on final ']' */
1132: StrAllocCat (default_default, dir);
1133: }
1134: #else /* not VMS */
1135: StrAllocCat (default_default, wd);
1.59 frystyk 1136: #endif /* not VMS */
1.57 howcome 1137: }
1.59 frystyk 1138: }
1.57 howcome 1139: StrAllocCat(default_default, "/default.html");
1140: return default_default;
1.2 timbl 1141: }
1142:
1143:
1144: /* Generate the anchor for the home page
1145: ** -------------------------------------
1146: **
1147: ** As it involves file access, this should only be done once
1148: ** when the program first runs.
1.10 timbl 1149: ** This is a default algorithm -- browser don't HAVE to use this.
1150: ** But consistency betwen browsers is STRONGLY recommended!
1.2 timbl 1151: **
1.10 timbl 1152: ** Priority order is:
1153: **
1154: ** 1 WWW_HOME environment variable (logical name, etc)
1155: ** 2 ~/WWW/default.html
1156: ** 3 /usr/local/bin/default.html
1157: ** 4 http://info.cern.ch/default.html
1158: **
1.2 timbl 1159: */
1160: PUBLIC HTParentAnchor * HTHomeAnchor NOARGS
1161: {
1.12 timbl 1162: char * my_home_document = NULL;
1163: char * home = (char *)getenv(LOGICAL_DEFAULT);
1.2 timbl 1164: char * ref;
1165: HTParentAnchor * anchor;
1.1 timbl 1166:
1.12 timbl 1167: if (home) {
1168: StrAllocCopy(my_home_document, home);
1169:
1170: /* Someone telnets in, they get a special home.
1171: */
1172: } else if (HTClientHost) { /* Telnet server */
1173: FILE * fp = fopen(REMOTE_POINTER, "r");
1174: char * status;
1175: if (fp) {
1.59 frystyk 1176: my_home_document = (char*) malloc(HT_MAX_PATH);
1177: status = fgets(my_home_document, HT_MAX_PATH, fp);
1.12 timbl 1178: if (!status) {
1179: free(my_home_document);
1180: my_home_document = NULL;
1181: }
1182: fclose(fp);
1183: }
1184: if (!my_home_document) StrAllocCopy(my_home_document, REMOTE_ADDRESS);
1185: }
1186:
1187:
1188:
1.2 timbl 1189: #ifdef unix
1.12 timbl 1190:
1.10 timbl 1191: if (!my_home_document) {
1192: FILE * fp = NULL;
1193: CONST char * home = (CONST char*)getenv("HOME");
1194: if (home) {
1195: my_home_document = (char *)malloc(
1196: strlen(home)+1+ strlen(PERSONAL_DEFAULT)+1);
1197: if (my_home_document == NULL) outofmem(__FILE__, "HTLocalName");
1198: sprintf(my_home_document, "%s/%s", home, PERSONAL_DEFAULT);
1199: fp = fopen(my_home_document, "r");
1200: }
1201:
1202: if (!fp) {
1203: StrAllocCopy(my_home_document, LOCAL_DEFAULT_FILE);
1204: fp = fopen(my_home_document, "r");
1205: }
1.2 timbl 1206: if (fp) {
1207: fclose(fp);
1208: } else {
1.62 frystyk 1209: if (TRACE)
1210: fprintf(stderr,
1211: "HTBrowse: No local home document ~/%s or %s\n",
1212: PERSONAL_DEFAULT, LOCAL_DEFAULT_FILE);
1.11 timbl 1213: free(my_home_document);
1214: my_home_document = NULL;
1.2 timbl 1215: }
1216: }
1217: #endif
1.10 timbl 1218: ref = HTParse( my_home_document ? my_home_document :
1219: HTClientHost ? REMOTE_ADDRESS
1220: : LAST_RESORT,
1221: "file:",
1.2 timbl 1222: PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
1.10 timbl 1223: if (my_home_document) {
1.62 frystyk 1224: if (TRACE)
1225: fprintf(stderr,
1226: "HTAccess.... `%s\' used for custom home page as\n`%s\'\n",
1227: my_home_document, ref);
1.10 timbl 1228: free(my_home_document);
1.2 timbl 1229: }
1230: anchor = (HTParentAnchor*) HTAnchor_findAddress(ref);
1231: free(ref);
1232: return anchor;
1.1 timbl 1233: }
1.26 frystyk 1234:
1235:
1236: /* Bind an Anchor to the request structure
1237: ** ---------------------------------------
1238: **
1239: ** On Entry,
1240: ** anchor The child or parenet anchor to be binded
1241: ** request The request sturcture
1242: ** On Exit,
1243: ** returns YES Success
1244: ** NO Failure
1245: **
1246: ** Note: Actually the same as HTLoadAnchor() but DOES NOT do the loading
1247: ** Henrik Frystyk 17/02-94
1248: */
1249:
1250: PUBLIC BOOL HTBindAnchor ARGS2(HTAnchor*, anchor, HTRequest *, request)
1251: {
1252: if (!anchor) return NO; /* No link */
1253:
1254: request->anchor = HTAnchor_parent(anchor);
1255: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ? NULL
1256: : (HTChildAnchor*) anchor;
1257:
1.29 frystyk 1258: return YES;
1.26 frystyk 1259: } /* HTBindAnchor */
1.59 frystyk 1260:
1.26 frystyk 1261:
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