Annotation of libwww/Library/src/HTAccess.c, revision 1.92

1.61      frystyk     1: /*                                                                  HTAccess.c
                      2: **     ACCESS MANAGER
                      3: **
1.75      frystyk     4: **     (c) COPYRIGHT MIT 1995.
1.61      frystyk     5: **     Please first read the full copyright statement in the file COPYRIGH.
1.1       timbl       6: **
                      7: ** Authors
1.79      frystyk     8: **     TBL     Tim Berners-Lee timbl@w3.org
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.
1.88      frystyk    22: **        Sep 95 Rewritten, HFN
1.1       timbl      23: */
                     24: 
1.68      frystyk    25: #if !defined(HT_DIRECT_WAIS) && !defined(HT_DEFAULT_WAIS_GATEWAY)
                     26: #define HT_DEFAULT_WAIS_GATEWAY "http://www.w3.org:8001/"
1.54      frystyk    27: #endif
1.8       timbl      28: 
1.67      frystyk    29: /* Library include files */
1.88      frystyk    30: #include "WWWLib.h"
                     31: #include "HTReqMan.h"       /* @@@@@@@@@@@@@@@@@@@@@@@@ */
                     32: 
1.70      frystyk    33: #include "HTInit.h"
1.67      frystyk    34: #include "HTAccess.h"                                   /* Implemented here */
1.2       timbl      35: 
1.59      frystyk    36: /* --------------------------------------------------------------------------*/
1.61      frystyk    37: /*                Initialization and Termination of the Library             */
                     38: /* --------------------------------------------------------------------------*/
                     39: 
                     40: /*                                                                  HTLibInit
                     41: **
                     42: **     This function initiates the Library and it MUST be called when
                     43: **     starting up an application. See also HTLibTerminate()
                     44: */
1.90      frystyk    45: PUBLIC BOOL HTLibInit (void)
1.61      frystyk    46: {
1.67      frystyk    47: #ifdef NO_STDIO                                                  /* Open trace file */
                     48:     if ((TDEST = fopen(TRACE_FILE, "a")) != NULL) {
                     49:        if (setvbuf(TDEST, NULL, _IOLBF, 0) < 0) {  /* Change to line buffer */
1.70      frystyk    50:            printf("WWWLibInit.. Can't initialize TRACE buffer - no TRACE\n");
1.67      frystyk    51:            fclose(TDEST);
                     52:            TDEST = NULL;
                     53:            WWW_TraceFlag = 0;
                     54:        }
                     55:     } else
                     56:        WWW_TraceFlag = 0;
                     57: #endif
                     58: 
1.91      frystyk    59:     if (WWWTRACE)
1.67      frystyk    60:        fprintf(TDEST, "WWWLibInit.. INITIALIZING LIBRARY OF COMMON CODE\n");
1.63      frystyk    61: 
1.77      frystyk    62:     /* Set up User preferences, but leave initialization to the application */
1.73      frystyk    63:     if (!HTConversions)
                     64:        HTConversions = HTList_new();
1.77      frystyk    65:     if (!HTEncodings)
                     66:        HTEncodings = HTList_new();
                     67:     if (!HTLanguages)
                     68:        HTLanguages = HTList_new();
                     69:     if (!HTCharsets)
                     70:        HTCharsets = HTList_new();
                     71: 
                     72:     /* Set up bindings to the local file system */
                     73:     HTBind_init();
1.73      frystyk    74: 
1.70      frystyk    75: #ifndef HT_NO_INIT
                     76:     HTAccessInit();             /* Bind access schemes and protocol modules */
                     77:     HTFileInit();                   /* Bind file extensions and media types */
1.63      frystyk    78: #endif
1.61      frystyk    79: 
1.77      frystyk    80: #ifndef HT_DIRECT_WAIS
                     81:     HTProxy_setGateway("wais", HT_DEFAULT_WAIS_GATEWAY);
                     82: #endif
                     83: 
1.88      frystyk    84:     /* Register a call back function for the Net Manager */
                     85:     HTNet_register (HTLoad_terminate, HT_ALL);
                     86: 
1.62      frystyk    87: #ifdef WWWLIB_SIG
1.61      frystyk    88:     /* On Solaris (and others?) we get a BROKEN PIPE signal when connecting
1.67      frystyk    89:     ** to a port where we should get `connection refused'. We ignore this 
1.61      frystyk    90:     ** using the following function call
                     91:     */
                     92:     HTSetSignal();                                /* Set signals in library */
1.1       timbl      93: #endif
                     94: 
1.67      frystyk    95: #ifdef _WINDOWS
                     96:     /*
                     97:     ** Initialise WinSock DLL. This must also be shut down! PMH
                     98:     */
                     99:     {
                    100:         WSADATA            wsadata;
                    101:        if (WSAStartup(DESIRED_WINSOCK_VERSION, &wsadata)) {
1.91      frystyk   102:            if (WWWTRACE)
1.67      frystyk   103:                fprintf(TDEST, "WWWLibInit.. Can't initialize WinSoc\n");
                    104:             WSACleanup();
                    105:             return NO;
                    106:         }
                    107:         if (wsadata.wVersion < MINIMUM_WINSOCK_VERSION) {
1.91      frystyk   108:             if (WWWTRACE)
1.67      frystyk   109:                fprintf(TDEST, "WWWLibInit.. Bad version of WinSoc\n");
                    110:             WSACleanup();
                    111:             return NO;
                    112:         }
                    113:     }
                    114: #endif /* _WINDOWS */
                    115: 
1.71      frystyk   116: #ifndef NO_TIMEGM
                    117:     HTGetTimeZoneOffset();        /* Find offset from GMT if using mktime() */
                    118: #endif
1.70      frystyk   119:     HTTmp_setRoot(NULL);                    /* Set up default tmp directory */
1.61      frystyk   120:     return YES;
                    121: }
                    122: 
                    123: 
1.90      frystyk   124: /*     HTLibTerminate
                    125: **     --------------
1.61      frystyk   126: **     This function frees memory kept by the Library and should be called
1.63      frystyk   127: **     before exit of an application (if you are on a PC platform)
1.61      frystyk   128: */
                    129: PUBLIC BOOL HTLibTerminate NOARGS
                    130: {
1.91      frystyk   131:     if (WWWTRACE)
1.67      frystyk   132:        fprintf(TDEST, "WWWLibTerm.. Cleaning up LIBRARY OF COMMON CODE\n");
1.63      frystyk   133:     HTAtom_deleteAll();
                    134:     HTDisposeConversions();
1.89      frystyk   135:     HTDNS_deleteAll();
1.73      frystyk   136: 
                    137: #ifndef HT_NO_INIT
1.81      frystyk   138:     HTProtocol_deleteAll();  /* Remove bindings between access and protocols */
1.73      frystyk   139:     HTBind_deleteAll();            /* Remove bindings between suffixes, media types */
                    140: #endif
                    141: 
1.77      frystyk   142:     HTProxy_deleteProxy();        /* Clean up lists of proxies and gateways */
                    143:     HTProxy_deleteNoProxy();
                    144:     HTProxy_deleteGateway();
                    145: 
                    146:     HTFreeHostName();                      /* Free up some internal strings */
1.63      frystyk   147:     HTFreeMailAddress();
1.70      frystyk   148:     HTCache_freeRoot();
1.84      frystyk   149:     HTCache_clearMem();                                  /* Keep the disk versions! */
1.70      frystyk   150:     HTTmp_freeRoot();
1.67      frystyk   151: 
                    152: #ifdef _WINDOWS
                    153:     WSACleanup();
                    154: #endif
                    155: 
                    156: #ifdef NO_STDIO                                                 /* Close trace file */
                    157:     if (TDEST) {
                    158:        fclose(TDEST);
                    159:        TDEST = NULL;
                    160:        WWW_TraceFlag = 0;
                    161:     }
                    162: #endif
1.61      frystyk   163:     return YES;
                    164: }
                    165: 
1.59      frystyk   166: /* --------------------------------------------------------------------------*/
1.88      frystyk   167: /*                             Access functions                             */
1.59      frystyk   168: /* --------------------------------------------------------------------------*/
1.33      luotonen  169: 
1.90      frystyk   170: /*     Request a document
                    171: **     -----------------
                    172: **     Private version that requests a document from the request manager
                    173: **     Returns YES if request accepted, else NO
1.88      frystyk   174: */
1.90      frystyk   175: PRIVATE BOOL HTLoadDocument ARGS2(HTRequest *, request, BOOL, recursive)
1.88      frystyk   176: {
                    177:     if (PROT_TRACE) {
1.90      frystyk   178:        HTParentAnchor *anchor = HTRequest_anchor(request);
                    179:        char * full_address = HTAnchor_address((HTAnchor *) anchor);
1.88      frystyk   180:        fprintf (TDEST, "HTAccess.... Accessing document %s\n", full_address);
                    181:        free(full_address);
                    182:     }
                    183:     return HTLoad(request, recursive, 0);             /* @@@@ PRIORITY @@@@ */
1.58      frystyk   184: }
1.1       timbl     185: 
                    186: 
1.90      frystyk   187: /*     Request a document from absolute name
                    188: **     -------------------------------------
                    189: **     Request a document referencd by an absolute URL.
                    190: **     Returns YES if request accepted, else NO
                    191: */
                    192: PUBLIC BOOL HTLoadAbsolute (CONST char * url, HTRequest* request)
                    193: {
                    194:     if (url && request) {
                    195:        HTAnchor * anchor = HTAnchor_findAddress(url);
                    196:        HTRequest_setAnchor(request, anchor);
                    197:        return HTLoadDocument(request, NO);
                    198:     }
                    199:     return NO;
                    200: }
                    201: 
                    202: 
                    203: /*     Request a document from absolute name to stream
                    204: **     -----------------------------------------------
                    205: **     Request a document referencd by an absolute URL and sending the data
                    206: **     down a stream. This is _excactly_ the same as HTLoadAbsolute as
                    207: **     the ourputstream is specified using the function
                    208: **     HTRequest_setOutputStream(). 'filter' is ignored!
                    209: **     Returns YES if request accepted, else NO
                    210: */
                    211: PUBLIC BOOL HTLoadToStream (CONST char * url, BOOL filter, HTRequest *request)
                    212: {
                    213:     return HTLoadAbsolute(url, request);
                    214: }
                    215: 
                    216: 
                    217: /*     Request a document from relative name
                    218: **     -------------------------------------
                    219: **     Request a document referenced by a relative URL. The relative URL is 
                    220: **     made absolute by resolving it relative to the address of the 'base' 
                    221: **     anchor.
                    222: **     Returns YES if request accepted, else NO
                    223: */
                    224: PUBLIC BOOL HTLoadRelative (CONST char *       relative,
                    225:                            HTParentAnchor *    base,
                    226:                            HTRequest *         request)
                    227: {
                    228:     BOOL status = NO;
                    229:     if (relative && base && request) {
                    230:        char * rel = NULL;
                    231:        char * full_url = NULL;
                    232:        char * base_url = HTAnchor_address((HTAnchor *) base);
                    233:        StrAllocCopy(rel, relative);
                    234:        full_url = HTParse(HTStrip(rel), base_url,
                    235:                         PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
                    236:        status = HTLoadAbsolute(full_url, request);
                    237:        free(rel);
                    238:        free(full_url);
                    239:        free(base_url);
                    240:     }
                    241:     return status;
                    242: }
                    243: 
                    244: 
                    245: /*     Request an anchor
                    246: **     -----------------
                    247: **     Request the document referenced by the anchor
                    248: **     Returns YES if request accepted, else NO
                    249: */
                    250: PUBLIC BOOL HTLoadAnchor (HTAnchor * anchor, HTRequest * request)
                    251: {
                    252:     if (anchor && request) {
                    253:        HTRequest_setAnchor(request, anchor);
                    254:        return HTLoadDocument(request, NO);
                    255:     }
                    256:     return NO;
                    257: }
                    258: 
                    259: 
                    260: /*     Request an anchor
                    261: **     -----------------
                    262: **     Same as HTLoadAnchor but any information in the Error Stack in the 
                    263: **     request object is kept, so that any error messages in one 
1.52      frystyk   264: **     This function is almost identical to HTLoadAnchor, but it doesn't
                    265: **     clear the error stack so that the information in there is kept.
1.90      frystyk   266: **     Returns YES if request accepted, else NO
                    267: */
                    268: PUBLIC BOOL HTLoadAnchorRecursive (HTAnchor * anchor, HTRequest * request)
                    269: {
                    270:     if (anchor && request) {
                    271:        HTRequest_setAnchor(request, anchor);
                    272:         return HTLoadDocument(request, YES);
                    273:     }
                    274:     return NO;
                    275: }
                    276: 
                    277: 
                    278: /*     Search an Anchor
                    279: **     ----------------
                    280: **     Performs a keyword search on word given by the user. Adds the keyword
                    281: **     to the end of the current address and attempts to open the new address.
                    282: **     The list of keywords must be a space-separated list and spaces will
                    283: **     be converted to '+' before the request is issued.
                    284: **     Search can also be performed by HTLoadAbsolute() etc.
                    285: **     Returns YES if request accepted, else NO
                    286: */
                    287: PUBLIC BOOL HTSearch (CONST char *     keywords,
                    288:                      HTParentAnchor *  base,
                    289:                      HTRequest *       request)
                    290: {
                    291:     if (keywords && base && request) {
                    292:        char *base_url = HTAnchor_address((HTAnchor *) base);
                    293:        if (*keywords) {
                    294:            char *plus;
                    295:            StrAllocCat(base_url, "?");
                    296:            StrAllocCat(base_url, keywords);
                    297:            plus = strchr(base_url, '?');
                    298:            while (*plus) {
                    299:                if (*plus == ' ') *plus = '+';
                    300:                plus++;
                    301:            }
1.2       timbl     302:        }
1.90      frystyk   303:        return HTLoadAbsolute(base_url, request);
                    304:     }
                    305:     return NO;
1.2       timbl     306: }
                    307: 
                    308: 
1.90      frystyk   309: /*     Search a document from absolute name
                    310: **     ------------------------------------
                    311: **     Request a document referencd by an absolute URL appended with the
                    312: **     keywords given. The URL can NOT contain any fragment identifier!
                    313: **     The list of keywords must be a space-separated list and spaces will
                    314: **     be converted to '+' before the request is issued.
                    315: **     Returns YES if request accepted, else NO
                    316: */
                    317: PUBLIC BOOL HTSearchAbsolute (CONST char *     keywords,
                    318:                              CONST char *      url,
                    319:                              HTRequest *       request)
                    320: {
                    321:     if (url && request) {
                    322:        HTAnchor * anchor = HTAnchor_findAddress(url);
                    323:        return HTSearch(keywords, HTAnchor_parent(anchor), request);
                    324:     }
                    325:     return NO;
1.57      howcome   326: }
                    327: 
1.70      frystyk   328: /* --------------------------------------------------------------------------*/
                    329: /*                             Document Poster                              */
                    330: /* --------------------------------------------------------------------------*/
                    331: 
1.90      frystyk   332: /*     Copy an anchor
1.70      frystyk   333: **     --------------
1.90      frystyk   334: **     Fetch the URL (possibly local file URL) and send it using either PUT
                    335: **     or POST to the remote destination using HTTP. The caller can decide the
                    336: **     exact method used and which HTTP header fields to transmit by setting
                    337: **     the user fields in the request structure.
1.92    ! frystyk   338: **     If posting to NNTP then we can't dispatch at this level but must pass
        !           339: **     the source anchor to the news module that then takes all the refs
        !           340: **     to NNTP and puts into the "newsgroups" header
1.90      frystyk   341: **     Returns YES if request accepted, else NO
1.70      frystyk   342: */
1.90      frystyk   343: PUBLIC BOOL HTCopyAnchor (HTAnchor * src_anchor, HTRequest * main_req)
1.80      frystyk   344: { 
1.78      frystyk   345:     HTRequest *src_req;
1.85      frystyk   346:     if (!src_anchor || !main_req)
1.90      frystyk   347:        return NO;
1.70      frystyk   348: 
1.80      frystyk   349:     /* Build the POST web if not already there */
1.85      frystyk   350:     if (!main_req->source) {
1.80      frystyk   351:        src_req = HTRequest_new();                /* First set up the source */
                    352:        HTAnchor_clearHeader((HTParentAnchor *) src_anchor);
1.85      frystyk   353:        src_req->reload = HT_MEM_REFRESH;
1.80      frystyk   354:        src_req->source = src_req;                        /* Point to myself */
                    355:        src_req->output_format = WWW_SOURCE;     /* We want source (for now) */
                    356: 
                    357:        /* Set up the main link in the source anchor */
                    358:        {
1.85      frystyk   359:            HTLink *main_link = HTAnchor_findMainLink(src_anchor);
                    360:            HTAnchor *main_anchor = HTAnchor_linkDest(main_link);
                    361:            HTMethod method = HTAnchor_linkMethod(main_link);
                    362:            if (!main_link || method==METHOD_INVALID) {
1.91      frystyk   363:                if (WWWTRACE)
1.80      frystyk   364:                    fprintf(TDEST, "Copy Anchor. No destination found or unspecified method");
                    365:                HTRequest_delete(src_req);
1.90      frystyk   366:                return NO;
1.80      frystyk   367:            }
1.85      frystyk   368:            if (HTAnchor_linkResult(main_link) == HT_LINK_NONE) {
                    369:                main_req->GenMask |= HT_DATE;            /* Send date header */
                    370:                main_req->source = src_req;
                    371:                main_req->reload = HT_CACHE_REFRESH;
                    372:                main_req->method = method;
                    373:                HTRequest_addDestination(src_req, main_req);
                    374:                main_req->input_format = WWW_SOURCE;      /* for now :-( @@@ */
1.90      frystyk   375:                if (HTLoadAnchor(main_anchor, main_req) == NO)
                    376:                    return NO;
1.85      frystyk   377:            }
1.80      frystyk   378:        }
1.78      frystyk   379: 
1.80      frystyk   380:        /* For all other links in the source anchor */
                    381:        if (src_anchor->links) {
                    382:            HTList *cur = src_anchor->links;
                    383:            HTLink *pres;
1.85      frystyk   384:            while ((pres = (HTLink *) HTList_nextObject(cur)) &&
                    385:                   HTAnchor_linkResult(pres) == HT_LINK_NONE) {
                    386:                HTAnchor *dest = HTAnchor_linkDest(pres);
                    387:                HTMethod method = HTAnchor_linkMethod(pres);
1.80      frystyk   388:                HTRequest *dest_req;
                    389:                if (!dest || method==METHOD_INVALID) {
1.91      frystyk   390:                    if (WWWTRACE)
1.80      frystyk   391:                        fprintf(TDEST, "Copy Anchor. Bad anchor setup %p\n",
                    392:                                dest);
1.90      frystyk   393:                    return NO;
1.80      frystyk   394:                }
                    395:                dest_req = HTRequest_new();
1.85      frystyk   396:                dest_req->GenMask |= HT_DATE;            /* Send date header */
1.80      frystyk   397:                dest_req->source = src_req;
1.85      frystyk   398:                dest_req->reload = HT_CACHE_REFRESH;
1.80      frystyk   399:                dest_req->method = method;
                    400:                HTRequest_addDestination(src_req, dest_req);
                    401:                dest_req->input_format = WWW_SOURCE;      /* for now :-( @@@ */
1.90      frystyk   402:                if (HTLoadAnchor(dest, dest_req) == NO)
                    403:                    return NO;
1.80      frystyk   404:            }
                    405:        }
                    406:     } else {                    /* Use the existing Post Web and restart it */
1.85      frystyk   407:        src_req = main_req->source;
1.80      frystyk   408:        if (src_req->mainDestination)
1.90      frystyk   409:            if (HTLoadDocument(main_req, NO) == NO)
                    410:                return NO;
1.80      frystyk   411:        if (src_req->destinations) {
                    412:            HTList *cur = src_anchor->links;
                    413:            HTRequest *pres;
                    414:            while ((pres = (HTRequest *) HTList_nextObject(cur)) != NULL) {
1.90      frystyk   415:                if (HTLoadDocument(pres, NO) == NO)
                    416:                    return NO;
1.80      frystyk   417:            }
                    418:        }
1.78      frystyk   419:     }
                    420: 
1.80      frystyk   421:     /* Now open the source */
                    422:     return HTLoadAnchor(src_anchor, src_req);
1.70      frystyk   423: }
                    424: 
                    425: 
1.90      frystyk   426: /*     Upload an Anchor
1.70      frystyk   427: **     ----------------
1.90      frystyk   428: **     Send the contents (in hyperdoc) of the source anchor using either PUT
                    429: **     or POST to the remote destination using HTTP. The caller can decide the
                    430: **     exact method used and which HTTP header fields to transmit by setting
                    431: **     the user fields in the request structure.
                    432: **     Returns YES if request accepted, else NO
                    433: */
                    434: PUBLIC BOOL HTUploadAnchor (HTAnchor *         src_anchor,
                    435:                            HTParentAnchor *    dest_anchor,
                    436:                            HTRequest *         dest_req)
1.70      frystyk   437: {
1.90      frystyk   438:     if (!src_anchor || !dest_anchor || !dest_req)
                    439:        return NO;
1.70      frystyk   440:     if (!(dest_anchor->methods & dest_req->method)) {
                    441:        char buf[80];
                    442:        sprintf(buf, "It might not be allowed to %s to this destination, continue?", HTMethod_name(dest_req->method));
1.86      frystyk   443:        if (!HTConfirm(dest_req, buf))
1.90      frystyk   444:            return NO;
1.70      frystyk   445:     }
1.77      frystyk   446: 
                    447:     /* @@@ NOT FINISHED @@@ */
1.70      frystyk   448: 
1.90      frystyk   449:     return NO;
1.70      frystyk   450: }
                    451: 
                    452: /* --------------------------------------------------------------------------*/
                    453: /*                             Anchor help routines                         */
                    454: /* --------------------------------------------------------------------------*/
1.57      howcome   455: 
                    456: /*
                    457: **             Find Related Name
                    458: **
                    459: **  Creates a string that can be used as a related name when 
                    460: **  calling HTParse initially. 
                    461: **  
                    462: **  The code for this routine originates from the Linemode 
1.79      frystyk   463: **  browser and was moved here by howcome@w3.org
1.57      howcome   464: **  in order for all clients to take advantage.
                    465: **
1.59      frystyk   466: **  The string returned must be freed by the caller
1.57      howcome   467: */
                    468: PUBLIC char * HTFindRelatedName NOARGS
                    469: {
1.59      frystyk   470:     char* default_default = NULL;            /* Parse home relative to this */
                    471:     CONST char *host = HTGetHostName(); 
1.57      howcome   472:     StrAllocCopy(default_default, "file://");
1.59      frystyk   473:     if (host)
                    474:        StrAllocCat(default_default, host);
                    475:     else
                    476:        StrAllocCat(default_default, "localhost");
                    477:     {
                    478:        char wd[HT_MAX_PATH+1];
1.67      frystyk   479: 
                    480: #ifdef NO_GETWD
                    481: #ifdef HAS_GETCWD            /* System V variant SIGN CHANGED TBL 921006 !! */
                    482:        char *result = (char *) getcwd(wd, sizeof(wd)); 
                    483: #else
                    484:        char *result = NULL;
                    485:        HTAlert("This platform does not support neither getwd nor getcwd\n");
                    486: #endif
                    487: #else
                    488:        char *result = (char *) getwd(wd);
                    489: #endif
1.59      frystyk   490:        *(wd+HT_MAX_PATH) = '\0';
1.57      howcome   491:        if (result) {
                    492: #ifdef VMS 
                    493:             /* convert directory name to Unix-style syntax */
                    494:            char * disk = strchr (wd, ':');
                    495:            char * dir = strchr (wd, '[');
                    496:            if (disk) {
                    497:                *disk = '\0';
                    498:                StrAllocCat (default_default, "/");  /* needs delimiter */
                    499:                StrAllocCat (default_default, wd);
                    500:            }
                    501:            if (dir) {
                    502:                char *p;
                    503:                *dir = '/';  /* Convert leading '[' */
                    504:                for (p = dir ; *p != ']'; ++p)
                    505:                        if (*p == '.') *p = '/';
                    506:                *p = '\0';  /* Cut on final ']' */
                    507:                StrAllocCat (default_default, dir);
                    508:            }
1.74      frystyk   509: #else  /* not VMS */
1.70      frystyk   510: #ifdef WIN32
                    511:            char * p = wd ;     /* a colon */
                    512:            StrAllocCat(default_default, "/");
                    513:            while( *p != 0 ) { 
                    514:                if (*p == '\\')                  /* change to one true slash */
                    515:                    *p = '/' ;
                    516:                p++;
                    517:            }
1.74      frystyk   518:            StrAllocCat( default_default, wd);
                    519: #else /* not WIN32 */
1.57      howcome   520:            StrAllocCat (default_default, wd);
1.70      frystyk   521: #endif /* not WIN32 */
1.67      frystyk   522: #endif /* not VMS */
1.57      howcome   523:        }
1.67      frystyk   524:     }
1.57      howcome   525:     StrAllocCat(default_default, "/default.html");
                    526:     return default_default;
1.2       timbl     527: }
                    528: 
                    529: 
                    530: /*             Generate the anchor for the home page
                    531: **             -------------------------------------
                    532: **
                    533: **     As it involves file access, this should only be done once
                    534: **     when the program first runs.
1.10      timbl     535: **     This is a default algorithm -- browser don't HAVE to use this.
                    536: **     But consistency betwen browsers is STRONGLY recommended!
1.2       timbl     537: **
1.10      timbl     538: **     Priority order is:
                    539: **
                    540: **             1       WWW_HOME environment variable (logical name, etc)
                    541: **             2       ~/WWW/default.html
                    542: **             3       /usr/local/bin/default.html
1.70      frystyk   543: **             4       http://www.w3.org/default.html
1.10      timbl     544: **
1.2       timbl     545: */
                    546: PUBLIC HTParentAnchor * HTHomeAnchor NOARGS
                    547: {
1.12      timbl     548:     char * my_home_document = NULL;
1.70      frystyk   549:     char * home = (char *) getenv(LOGICAL_DEFAULT);
1.2       timbl     550:     char * ref;
                    551:     HTParentAnchor * anchor;
1.1       timbl     552:     
1.70      frystyk   553:     /* Someone telnets in, they get a special home */
1.12      timbl     554:     if (home) {
                    555:         StrAllocCopy(my_home_document, home);
1.70      frystyk   556:     } else  if (HTClientHost) {                                    /* Telnet server */
1.12      timbl     557:        FILE * fp = fopen(REMOTE_POINTER, "r");
                    558:        char * status;
                    559:        if (fp) {
1.59      frystyk   560:            my_home_document = (char*) malloc(HT_MAX_PATH);
                    561:            status = fgets(my_home_document, HT_MAX_PATH, fp);
1.12      timbl     562:            if (!status) {
                    563:                free(my_home_document);
                    564:                my_home_document = NULL;
                    565:            }
                    566:            fclose(fp);
                    567:        }
                    568:        if (!my_home_document) StrAllocCopy(my_home_document, REMOTE_ADDRESS);
                    569:     }
                    570: 
1.67      frystyk   571: #ifdef unix
1.10      timbl     572:     if (!my_home_document) {
                    573:        FILE * fp = NULL;
1.70      frystyk   574:        char * home = (char *) getenv("HOME");
1.10      timbl     575:        if (home) { 
                    576:            my_home_document = (char *)malloc(
                    577:                strlen(home)+1+ strlen(PERSONAL_DEFAULT)+1);
                    578:            if (my_home_document == NULL) outofmem(__FILE__, "HTLocalName");
                    579:            sprintf(my_home_document, "%s/%s", home, PERSONAL_DEFAULT);
                    580:            fp = fopen(my_home_document, "r");
                    581:        }
                    582:        
                    583:        if (!fp) {
                    584:            StrAllocCopy(my_home_document, LOCAL_DEFAULT_FILE);
                    585:            fp = fopen(my_home_document, "r");
                    586:        }
1.2       timbl     587:        if (fp) {
                    588:            fclose(fp);
                    589:        } else {
1.91      frystyk   590:            if (WWWTRACE)
1.67      frystyk   591:                fprintf(TDEST,
1.62      frystyk   592:                        "HTBrowse: No local home document ~/%s or %s\n",
                    593:                        PERSONAL_DEFAULT, LOCAL_DEFAULT_FILE);
1.11      timbl     594:            free(my_home_document);
                    595:            my_home_document = NULL;
1.2       timbl     596:        }
                    597:     }
1.67      frystyk   598: #endif
1.70      frystyk   599:     ref = HTParse(my_home_document ? my_home_document :
                    600:                  HTClientHost ? REMOTE_ADDRESS : LAST_RESORT, "file:",
                    601:                  PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
1.10      timbl     602:     if (my_home_document) {
1.91      frystyk   603:        if (WWWTRACE)
1.67      frystyk   604:            fprintf(TDEST,
1.62      frystyk   605:                   "HTAccess.... `%s\' used for custom home page as\n`%s\'\n",
                    606:                    my_home_document, ref);
1.10      timbl     607:        free(my_home_document);
1.2       timbl     608:     }
                    609:     anchor = (HTParentAnchor*) HTAnchor_findAddress(ref);
                    610:     free(ref);
                    611:     return anchor;
1.1       timbl     612: }
1.26      frystyk   613: 

Webmaster