Annotation of libwww/Library/src/HTAccess.c, revision 1.71
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:
1.68 frystyk 28: #if !defined(HT_DIRECT_WAIS) && !defined(HT_DEFAULT_WAIS_GATEWAY)
29: #define HT_DEFAULT_WAIS_GATEWAY "http://www.w3.org:8001/"
1.54 frystyk 30: #endif
1.8 timbl 31:
1.67 frystyk 32: /* Library include files */
33: #include "tcp.h"
34: #include "HTUtils.h"
1.1 timbl 35: #include "HTParse.h"
1.4 timbl 36: #include "HTML.h" /* SCW */
1.2 timbl 37: #include "HTList.h"
38: #include "HText.h" /* See bugs above */
39: #include "HTAlert.h"
1.67 frystyk 40: #include "HTFWrite.h" /* for cache stuff */
1.70 frystyk 41: #include "HTLog.h"
1.17 timbl 42: #include "HTTee.h"
1.46 frystyk 43: #include "HTError.h"
1.67 frystyk 44: #include "HTString.h"
1.57 howcome 45: #include "HTTCP.h" /* HWL: for HTFindRelatedName */
1.63 frystyk 46: #include "HTFile.h"
1.59 frystyk 47: #include "HTThread.h"
1.63 frystyk 48: #include "HTEvent.h"
1.70 frystyk 49: #include "HTInit.h"
1.67 frystyk 50: #ifndef NO_RULES
51: #include "HTRules.h"
52: #endif
53: #include "HTAccess.h" /* Implemented here */
1.2 timbl 54:
1.54 frystyk 55: /* These flags may be set to modify the operation of this module */
56: PUBLIC char * HTClientHost = 0; /* Name of remote login host if any */
1.70 frystyk 57: PUBLIC BOOL HTSecure = NO; /* Disable access for telnet users? */
1.41 luotonen 58:
1.43 luotonen 59: PUBLIC char * HTImServer = NULL;/* cern_httpd sets this to the translated URL*/
1.70 frystyk 60: PUBLIC BOOL HTImProxy = NO; /* cern_httpd as a proxy? */
1.1 timbl 61:
1.70 frystyk 62: PRIVATE HTList * protocols = NULL; /* List of registered protocols */
1.43 luotonen 63:
1.63 frystyk 64: /* Superclass defn */
1.24 timbl 65: struct _HTStream {
66: HTStreamClass * isa;
67: /* ... */
68: };
69:
1.59 frystyk 70: /* --------------------------------------------------------------------------*/
71: /* Management of the HTRequest structure */
72: /* --------------------------------------------------------------------------*/
73:
1.15 timbl 74: /* Create a request structure
75: ** ---------------------------
76: */
77: PUBLIC HTRequest * HTRequest_new NOARGS
78: {
1.28 luotonen 79: HTRequest * me = (HTRequest*) calloc(1, sizeof(*me)); /* zero fill */
1.15 timbl 80: if (!me) outofmem(__FILE__, "HTRequest_new()");
81:
1.70 frystyk 82: me->conversions = HTList_new(); /* No conversions registered yet */
83: me->output_format = WWW_PRESENT; /* default it to present to user */
84: me->HeaderMask = DEFAULT_HEADERS; /* Send these headers */
85: me->EntityMask = DEFAULT_ENTITY_HEADERS; /* Also these */
1.15 timbl 86: return me;
87: }
88:
89:
1.49 frystyk 90: /* Clear a request structure
91: ** ---------------------------
92: ** This function clears the reguest structure so that only the
93: ** conversions remain. Everything else is as if it was created from
94: ** scratch.
95: */
96: PUBLIC void HTRequest_clear ARGS1(HTRequest *, req)
97: {
98: HTList *conversions;
99: if (!req) {
100: if (TRACE)
1.67 frystyk 101: fprintf(TDEST, "Clear....... request: Bad argument!\n");
1.49 frystyk 102: return;
103: }
104: conversions = req->conversions; /* Save the conversions */
105: HTErrorFree(req);
106: HTAACleanup(req);
107: memset(req, '\0', sizeof(HTRequest));
108:
109: /* Now initialize as from scratch but with the old list of conversions */
110: req->conversions = conversions;
111: req->output_format = WWW_PRESENT; /* default it to present to user */
112: }
113:
114:
1.20 luotonen 115: /* Delete a request structure
116: ** --------------------------
117: */
118: PUBLIC void HTRequest_delete ARGS1(HTRequest *, req)
119: {
120: if (req) {
1.59 frystyk 121: FREE(req->redirect);
122: FREE(req->authenticate);
123: HTFormatDelete(req);
1.46 frystyk 124: HTErrorFree(req);
1.34 frystyk 125: HTAACleanup(req);
1.61 frystyk 126:
127: /* These are temporary until we get a MIME thingy */
128: FREE(req->redirect);
129: FREE(req->WWWAAScheme);
130: FREE(req->WWWAARealm);
131: FREE(req->WWWprotection);
132:
1.34 frystyk 133: FREE(req);
1.20 luotonen 134: }
135: }
136:
1.59 frystyk 137: /* --------------------------------------------------------------------------*/
138: /* Management of HTTP Methods */
139: /* --------------------------------------------------------------------------*/
1.20 luotonen 140:
1.70 frystyk 141: static char *method_names[] =
1.22 luotonen 142: {
143: "INVALID-METHOD",
144: "GET",
145: "HEAD",
146: "POST",
147: "PUT",
148: "DELETE",
149: "LINK",
150: "UNLINK",
151: NULL
152: };
153:
154: /* Get method enum value
155: ** ---------------------
156: */
1.70 frystyk 157: PUBLIC HTMethod HTMethod_enum ARGS1(CONST char *, name)
1.22 luotonen 158: {
159: if (name) {
1.70 frystyk 160: if (!strcmp(name, *(method_names+1)))
161: return METHOD_GET;
162: else if (!strcmp(name, *(method_names+2)))
163: return METHOD_HEAD;
164: else if (!strcmp(name, *(method_names+3)))
165: return METHOD_POST;
166: else if (!strcmp(name, *(method_names+4)))
167: return METHOD_PUT;
168: else if (!strcmp(name, *(method_names+5)))
169: return METHOD_DELETE;
170: else if (!strcmp(name, *(method_names+6)))
171: return METHOD_LINK;
172: else if (!strcmp(name, *(method_names+7)))
173: return METHOD_UNLINK;
1.22 luotonen 174: }
175: return METHOD_INVALID;
176: }
177:
178:
179: /* Get method name
180: ** ---------------
1.70 frystyk 181: ** Returns pointer to entry in static table in memory
1.22 luotonen 182: */
1.70 frystyk 183: PUBLIC CONST char * HTMethod_name ARGS1(HTMethod, method)
1.22 luotonen 184: {
1.70 frystyk 185: if (method & METHOD_GET)
186: return *(method_names+1);
187: else if (method == METHOD_HEAD)
188: return *(method_names+2);
189: else if (method == METHOD_POST)
190: return *(method_names+3);
191: else if (method == METHOD_PUT)
192: return *(method_names+4);
193: else if (method == METHOD_DELETE)
194: return *(method_names+5);
195: else if (method == METHOD_LINK)
196: return *(method_names+6);
197: else if (method == METHOD_UNLINK)
198: return *(method_names+7);
199: else
200: return *method_names;
201: #if 0
202: if ((int)METHOD_INVALID && (int)method < (int)MAX_METHODS)
1.22 luotonen 203: return method_names[(int)method];
204: else
205: return method_names[(int)METHOD_INVALID];
1.70 frystyk 206: #endif
1.22 luotonen 207: }
208:
209:
1.70 frystyk 210: #if 0
211: /* NOT NEEDED AS METHODS IS NOT A BIT-FLAG */
1.22 luotonen 212: /* Is method in a list of method names?
213: ** -----------------------------------
214: */
215: PUBLIC BOOL HTMethod_inList ARGS2(HTMethod, method,
216: HTList *, list)
217: {
218: char * method_name = HTMethod_name(method);
219: HTList *cur = list;
220: char *item;
221:
222: while (NULL != (item = (char*)HTList_nextObject(cur))) {
1.67 frystyk 223: if (PROT_TRACE)
224: fprintf(TDEST, " %s", item);
1.22 luotonen 225: if (0==strcasecomp(item, method_name))
226: return YES;
227: }
228: return NO; /* Not found */
229: }
1.70 frystyk 230: #endif
1.22 luotonen 231:
1.59 frystyk 232: /* --------------------------------------------------------------------------*/
233: /* Management of the HTProtocol structure */
234: /* --------------------------------------------------------------------------*/
1.22 luotonen 235:
1.63 frystyk 236: /*
237: ** Register a Protocol as an active access method
1.1 timbl 238: */
1.56 frystyk 239: PUBLIC BOOL HTRegisterProtocol ARGS1(HTProtocol *, protocol)
1.1 timbl 240: {
241: if (!protocols) protocols = HTList_new();
1.59 frystyk 242: HTList_addObject(protocols, (void *) protocol);
1.1 timbl 243: return YES;
244: }
245:
1.63 frystyk 246:
247: /*
248: ** Delete the list of registered access methods. This is called from
249: ** within HTLibTerminate. Written by Eric Sink, eric@spyglass.com
250: */
251: PUBLIC void HTDisposeProtocols NOARGS
252: {
253: if (protocols) {
254: HTList_delete(protocols);
255: protocols = NULL;
256: }
257: }
258:
259:
260: /*
1.65 frystyk 261: ** Is a protocol registered as BLOCKING? The default behavior registered
262: ** when the protocol module was registered can be overridden by the
263: ** BlockingIO field in the HTRequest structure
1.63 frystyk 264: */
1.59 frystyk 265: PUBLIC BOOL HTProtocolBlocking ARGS1(HTRequest *, me)
266: {
1.65 frystyk 267: if (me) {
268: return (me->BlockingIO || (me->anchor && me->anchor->protocol &&
269: ((HTProtocol *) (me->anchor->protocol))->block == SOC_BLOCK));
270: }
271: return NO;
1.59 frystyk 272: }
273:
1.61 frystyk 274: /* --------------------------------------------------------------------------*/
275: /* Initialization and Termination of the Library */
276: /* --------------------------------------------------------------------------*/
277:
1.1 timbl 278: /* Register all known protocols
279: ** ----------------------------
280: **
1.61 frystyk 281: ** Add to or subtract from this list if you add or remove protocol
282: ** modules. This function is called from HTLibInit()
1.1 timbl 283: **
1.70 frystyk 284: ** Compiling with HT_NO_INIT prevents all known protocols from being
285: ** force in at link time.
1.1 timbl 286: */
1.70 frystyk 287: #ifndef HT_NO_INIT
1.61 frystyk 288: PRIVATE void HTAccessInit NOARGS
1.1 timbl 289: {
1.59 frystyk 290: GLOBALREF HTProtocol HTTP, HTFile, HTTelnet, HTTn3270, HTRlogin;
1.1 timbl 291: #ifndef DECNET
1.54 frystyk 292: #ifdef NEW_CODE
1.59 frystyk 293: GLOBALREF HTProtocol HTFTP, HTNews, HTNNTP, HTGopher;
294: #endif
295: GLOBALREF HTProtocol HTFTP, HTNews, HTGopher;
1.68 frystyk 296: #ifdef HT_DIRECT_WAIS
1.59 frystyk 297: GLOBALREF HTProtocol HTWAIS;
1.54 frystyk 298: #endif
1.42 frystyk 299:
1.2 timbl 300: HTRegisterProtocol(&HTFTP);
301: HTRegisterProtocol(&HTNews);
1.54 frystyk 302: #ifdef NEW_CODE
303: HTRegisterProtocol(&HTNNTP);
304: #endif
1.2 timbl 305: HTRegisterProtocol(&HTGopher);
1.42 frystyk 306:
1.68 frystyk 307: #ifdef HT_DIRECT_WAIS
1.3 timbl 308: HTRegisterProtocol(&HTWAIS);
309: #endif
1.1 timbl 310:
1.54 frystyk 311: #endif /* DECNET */
1.2 timbl 312: HTRegisterProtocol(&HTTP);
313: HTRegisterProtocol(&HTFile);
314: HTRegisterProtocol(&HTTelnet);
315: HTRegisterProtocol(&HTTn3270);
316: HTRegisterProtocol(&HTRlogin);
1.1 timbl 317: }
1.70 frystyk 318: #endif /* !HT_NO_INIT */
1.61 frystyk 319:
320: /* HTLibInit
321: **
322: ** This function initiates the Library and it MUST be called when
323: ** starting up an application. See also HTLibTerminate()
324: */
325: PUBLIC BOOL HTLibInit NOARGS
326: {
1.67 frystyk 327: #ifdef NO_STDIO /* Open trace file */
328: if ((TDEST = fopen(TRACE_FILE, "a")) != NULL) {
329: if (setvbuf(TDEST, NULL, _IOLBF, 0) < 0) { /* Change to line buffer */
1.70 frystyk 330: printf("WWWLibInit.. Can't initialize TRACE buffer - no TRACE\n");
1.67 frystyk 331: fclose(TDEST);
332: TDEST = NULL;
333: WWW_TraceFlag = 0;
334: }
335: } else
336: WWW_TraceFlag = 0;
337: #endif
338:
1.61 frystyk 339: if (TRACE)
1.67 frystyk 340: fprintf(TDEST, "WWWLibInit.. INITIALIZING LIBRARY OF COMMON CODE\n");
1.63 frystyk 341:
1.70 frystyk 342: /* Shall we initialize the bindings between (access method, protocol module),
343: (file extension, media type)? */
344: #ifndef HT_NO_INIT
345: HTAccessInit(); /* Bind access schemes and protocol modules */
346: HTFileInit(); /* Bind file extensions and media types */
1.63 frystyk 347: #endif
1.61 frystyk 348:
1.70 frystyk 349: /* Put up a global conversion list, but leave initialization
350: to the application */
351: if (!HTConversions)
352: HTConversions = HTList_new();
353:
1.62 frystyk 354: #ifdef WWWLIB_SIG
1.61 frystyk 355: /* On Solaris (and others?) we get a BROKEN PIPE signal when connecting
1.67 frystyk 356: ** to a port where we should get `connection refused'. We ignore this
1.61 frystyk 357: ** using the following function call
358: */
359: HTSetSignal(); /* Set signals in library */
1.1 timbl 360: #endif
361:
1.67 frystyk 362: #ifdef _WINDOWS
363: /*
364: ** Initialise WinSock DLL. This must also be shut down! PMH
365: */
366: {
367: WSADATA wsadata;
368: if (WSAStartup(DESIRED_WINSOCK_VERSION, &wsadata)) {
369: if (TRACE)
370: fprintf(TDEST, "WWWLibInit.. Can't initialize WinSoc\n");
371: WSACleanup();
372: return NO;
373: }
374: if (wsadata.wVersion < MINIMUM_WINSOCK_VERSION) {
375: if (TRACE)
376: fprintf(TDEST, "WWWLibInit.. Bad version of WinSoc\n");
377: WSACleanup();
378: return NO;
379: }
380: }
381: #endif /* _WINDOWS */
382:
1.71 ! frystyk 383: #ifndef NO_TIMEGM
! 384: HTGetTimeZoneOffset(); /* Find offset from GMT if using mktime() */
! 385: #endif
1.70 frystyk 386: HTTmp_setRoot(NULL); /* Set up default tmp directory */
1.61 frystyk 387: HTThreadInit(); /* Initialize bit arrays */
388: return YES;
389: }
390:
391:
392: /* HTLibTerminate
393: **
394: ** This function frees memory kept by the Library and should be called
1.63 frystyk 395: ** before exit of an application (if you are on a PC platform)
1.61 frystyk 396: */
397: PUBLIC BOOL HTLibTerminate NOARGS
398: {
399: if (TRACE)
1.67 frystyk 400: fprintf(TDEST, "WWWLibTerm.. Cleaning up LIBRARY OF COMMON CODE\n");
1.63 frystyk 401: HTAtom_deleteAll();
402: HTDisposeProtocols();
403: HTDisposeConversions();
404: HTFile_deleteSuffixes();
405: HTTCPCacheRemoveAll();
406: HTFreeHostName();
407: HTFreeMailAddress();
1.70 frystyk 408: HTCache_freeRoot();
409: HTTmp_freeRoot();
1.67 frystyk 410:
411: #ifdef _WINDOWS
412: WSACleanup();
413: #endif
414:
415: #ifdef NO_STDIO /* Close trace file */
416: if (TDEST) {
417: fclose(TDEST);
418: TDEST = NULL;
419: WWW_TraceFlag = 0;
420: }
421: #endif
1.61 frystyk 422: return YES;
423: }
424:
1.59 frystyk 425: /* --------------------------------------------------------------------------*/
426: /* Physical Anchor Address Manager */
427: /* --------------------------------------------------------------------------*/
1.33 luotonen 428:
429: /* override_proxy()
430: **
431: ** Check the no_proxy environment variable to get the list
432: ** of hosts for which proxy server is not consulted.
433: **
434: ** no_proxy is a comma- or space-separated list of machine
435: ** or domain names, with optional :port part. If no :port
436: ** part is present, it applies to all ports on that domain.
437: **
438: ** Example:
439: ** no_proxy="cern.ch,some.domain:8001"
440: **
441: */
442: PRIVATE BOOL override_proxy ARGS1(CONST char *, addr)
443: {
444: CONST char * no_proxy = getenv("no_proxy");
445: char * p = NULL;
446: char * host = NULL;
447: int port = 0;
448: int h_len = 0;
449:
450: if (!no_proxy || !addr || !(host = HTParse(addr, "", PARSE_HOST)))
451: return NO;
452: if (!*host) { free(host); return NO; }
453:
1.34 frystyk 454: if ((p = strchr(host, ':')) != NULL) { /* Port specified */
1.33 luotonen 455: *p++ = 0; /* Chop off port */
456: port = atoi(p);
457: }
458: else { /* Use default port */
459: char * access = HTParse(addr, "", PARSE_ACCESS);
460: if (access) {
461: if (!strcmp(access,"http")) port = 80;
462: else if (!strcmp(access,"gopher")) port = 70;
463: else if (!strcmp(access,"ftp")) port = 21;
464: free(access);
465: }
466: }
467: if (!port) port = 80; /* Default */
468: h_len = strlen(host);
469:
470: while (*no_proxy) {
471: CONST char * end;
472: CONST char * colon = NULL;
473: int templ_port = 0;
474: int t_len;
475:
476: while (*no_proxy && (WHITE(*no_proxy) || *no_proxy==','))
477: no_proxy++; /* Skip whitespace and separators */
478:
479: end = no_proxy;
480: while (*end && !WHITE(*end) && *end != ',') { /* Find separator */
481: if (*end==':') colon = end; /* Port number given */
482: end++;
483: }
484:
485: if (colon) {
486: templ_port = atoi(colon+1);
487: t_len = colon - no_proxy;
488: }
489: else {
490: t_len = end - no_proxy;
491: }
492:
493: if ((!templ_port || templ_port == port) &&
494: (t_len > 0 && t_len <= h_len &&
495: !strncmp(host + h_len - t_len, no_proxy, t_len))) {
496: free(host);
497: return YES;
498: }
499: if (*end) no_proxy = end+1;
500: else break;
501: }
502:
503: free(host);
504: return NO;
505: }
506:
507:
508:
1.2 timbl 509: /* Find physical name and access protocol
510: ** --------------------------------------
1.1 timbl 511: **
512: **
513: ** On entry,
514: ** addr must point to the fully qualified hypertext reference.
515: ** anchor a pareent anchor with whose address is addr
516: **
1.59 frystyk 517: ** On exit,
518: ** returns HT_NO_ACCESS no protocol module found
519: ** HT_FORBIDDEN Error has occured.
1.2 timbl 520: ** HT_OK Success
1.1 timbl 521: **
522: */
1.21 luotonen 523: PRIVATE int get_physical ARGS1(HTRequest *, req)
524: {
1.1 timbl 525: char * access=0; /* Name of access method */
1.21 luotonen 526: char * addr = HTAnchor_address((HTAnchor*)req->anchor); /* free me */
1.27 luotonen 527:
1.70 frystyk 528: #ifndef HT_NO_RULES
1.47 luotonen 529: if (HTImServer) { /* cern_httpd has already done its own translations */
1.45 luotonen 530: HTAnchor_setPhysical(req->anchor, HTImServer);
1.47 luotonen 531: StrAllocCopy(addr, HTImServer); /* Oops, queries thru many proxies */
532: /* didn't work without this -- AL */
533: }
1.21 luotonen 534: else {
1.27 luotonen 535: char * physical = HTTranslate(addr);
1.21 luotonen 536: if (!physical) {
1.47 luotonen 537: free(addr);
1.21 luotonen 538: return HT_FORBIDDEN;
539: }
540: HTAnchor_setPhysical(req->anchor, physical);
541: free(physical); /* free our copy */
1.2 timbl 542: }
543: #else
1.21 luotonen 544: HTAnchor_setPhysical(req->anchor, addr);
1.70 frystyk 545: #endif /* HT_NO_RULES */
1.2 timbl 546:
1.21 luotonen 547: access = HTParse(HTAnchor_physical(req->anchor),
1.27 luotonen 548: "file:", PARSE_ACCESS);
1.1 timbl 549:
550: /* Check whether gateway access has been set up for this
1.8 timbl 551: ** This function can be replaced by the rule system above.
1.1 timbl 552: */
1.70 frystyk 553: #ifndef HT_NO_PROXY
1.39 luotonen 554:
555: /* make sure the using_proxy variable is false */
1.70 frystyk 556: req->using_proxy = NO;
1.39 luotonen 557:
1.33 luotonen 558: if (!override_proxy(addr)) {
1.27 luotonen 559: char * gateway_parameter, *gateway, *proxy;
560:
1.2 timbl 561: gateway_parameter = (char *)malloc(strlen(access)+20);
562: if (gateway_parameter == NULL) outofmem(__FILE__, "HTLoad");
1.27 luotonen 563:
564: /* search for proxy gateways */
1.2 timbl 565: strcpy(gateway_parameter, "WWW_");
566: strcat(gateway_parameter, access);
567: strcat(gateway_parameter, "_GATEWAY");
568: gateway = (char *)getenv(gateway_parameter); /* coerce for decstation */
1.27 luotonen 569:
570: /* search for proxy servers */
571: strcpy(gateway_parameter, access);
572: strcat(gateway_parameter, "_proxy");
573: proxy = (char *)getenv(gateway_parameter);
574:
1.2 timbl 575: free(gateway_parameter);
1.27 luotonen 576:
1.68 frystyk 577: #ifndef HT_DIRECT_WAIS
1.9 timbl 578: if (!gateway && 0==strcmp(access, "wais")) {
1.69 frystyk 579: gateway = HT_DEFAULT_WAIS_GATEWAY;
1.8 timbl 580: }
581: #endif
1.27 luotonen 582:
1.70 frystyk 583: if (TRACE && gateway)
584: fprintf(TDEST,"Gateway..... Found: `%s\'\n", gateway);
585: if (TRACE && proxy)
586: fprintf(TDEST,"Proxy....... Found: `%s\'\n", proxy);
587:
1.27 luotonen 588: /* proxy servers have precedence over gateway servers */
1.60 frystyk 589: if (proxy && *proxy) {
1.27 luotonen 590: char * gatewayed=0;
591:
592: StrAllocCopy(gatewayed,proxy);
593: StrAllocCat(gatewayed,addr);
1.70 frystyk 594: req->using_proxy = YES;
1.27 luotonen 595: HTAnchor_setPhysical(req->anchor, gatewayed);
596: free(gatewayed);
597: free(access);
598:
599: access = HTParse(HTAnchor_physical(req->anchor),
600: "http:", PARSE_ACCESS);
1.60 frystyk 601: } else if (gateway && *gateway) {
1.9 timbl 602: char * path = HTParse(addr, "",
603: PARSE_HOST + PARSE_PATH + PARSE_PUNCTUATION);
604: /* Chop leading / off to make host into part of path */
605: char * gatewayed = HTParse(path+1, gateway, PARSE_ALL);
606: free(path);
1.21 luotonen 607: HTAnchor_setPhysical(req->anchor, gatewayed);
1.9 timbl 608: free(gatewayed);
1.2 timbl 609: free(access);
1.9 timbl 610:
1.21 luotonen 611: access = HTParse(HTAnchor_physical(req->anchor),
1.8 timbl 612: "http:", PARSE_ACCESS);
1.2 timbl 613: }
614: }
1.70 frystyk 615: #endif /* HT_NO_PROXY */
1.1 timbl 616:
1.19 timbl 617: free(addr);
1.1 timbl 618:
1.61 frystyk 619: /* Search registered protocols to find suitable one */
1.1 timbl 620: {
1.61 frystyk 621: HTList *cur = protocols;
1.20 luotonen 622: HTProtocol *p;
1.61 frystyk 623: if (!cur) {
624: if (TRACE)
1.67 frystyk 625: fprintf(TDEST, "HTAccess.... NO PROTOCOL MODULES INITIATED\n");
1.61 frystyk 626: } else {
627: while ((p = (HTProtocol*)HTList_nextObject(cur))) {
628: if (strcmp(p->name, access)==0) {
629: HTAnchor_setProtocol(req->anchor, p);
630: free(access);
631: return (HT_OK);
632: }
1.1 timbl 633: }
634: }
635: }
636: free(access);
1.2 timbl 637: return HT_NO_ACCESS;
1.1 timbl 638: }
639:
1.59 frystyk 640: /* --------------------------------------------------------------------------*/
641: /* Document Loader */
642: /* --------------------------------------------------------------------------*/
1.1 timbl 643:
644: /* Load a document
645: ** ---------------
646: **
1.2 timbl 647: ** This is an internal routine, which has an address AND a matching
648: ** anchor. (The public routines are called with one OR the other.)
649: **
650: ** On entry,
1.15 timbl 651: ** request->
1.35 luotonen 652: ** anchor a parent anchor with fully qualified
653: ** hypertext reference as its address set
1.15 timbl 654: ** output_format valid
655: ** output_stream valid on NULL
1.2 timbl 656: **
657: ** On exit,
1.59 frystyk 658: ** returns HT_WOULD_BLOCK An I/O operation would block
659: ** HT_ERROR Error has occured
1.2 timbl 660: ** HT_LOADED Success
661: ** HT_NO_DATA Success, but no document loaded.
1.8 timbl 662: ** (telnet sesssion started etc)
1.2 timbl 663: **
664: */
1.52 frystyk 665: PUBLIC int HTLoad ARGS2(HTRequest *, request, BOOL, keep_error_stack)
1.2 timbl 666: {
1.25 frystyk 667: char *arg = NULL;
668: HTProtocol *p;
669: int status;
670:
1.22 luotonen 671: if (request->method == METHOD_INVALID)
672: request->method = METHOD_GET;
1.52 frystyk 673: if (!keep_error_stack) {
674: HTErrorFree(request);
675: request->error_block = NO;
676: }
677:
1.59 frystyk 678: if ((status = get_physical(request)) < 0) {
679: if (status == HT_FORBIDDEN) {
680: char *url = HTAnchor_address((HTAnchor *) request->anchor);
681: if (url) {
682: HTUnEscape(url);
683: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
684: (void *) url, (int) strlen(url), "HTLoad");
685: free(url);
686: } else {
687: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
688: NULL, 0, "HTLoad");
689: }
690: }
691: return HT_ERROR; /* Can't resolve or forbidden */
1.2 timbl 692: }
1.25 frystyk 693:
694: if(!(arg = HTAnchor_physical(request->anchor)) || !*arg)
1.59 frystyk 695: return HT_ERROR;
1.27 luotonen 696:
1.56 frystyk 697: p = (HTProtocol *) HTAnchor_protocol(request->anchor);
1.17 timbl 698: return (*(p->load))(request);
1.2 timbl 699: }
700:
701:
1.61 frystyk 702: /* Terminate a LOAD
703: ** ----------------
704: **
705: ** This function looks at the status code from the HTLoadDocument
706: ** function and updates logfiles, creates error messages etc.
707: **
708: ** On Entry,
709: ** Status code from load function
710: */
711: PUBLIC BOOL HTLoadTerminate ARGS2(HTRequest *, request, int, status)
712: {
713: char * uri = HTAnchor_address((HTAnchor*)request->anchor);
714:
1.70 frystyk 715: HTLog_request(request);
1.61 frystyk 716:
717: /* The error stack might contain general information to the client
718: about what has been going on in the library (not only errors) */
719: if (!HTImProxy && request->error_stack)
720: HTErrorMsg(request);
721:
722: switch (status) {
723: case HT_LOADED:
724: if (PROT_TRACE) {
1.67 frystyk 725: fprintf(TDEST, "HTAccess.... OK: `%s' has been accessed.\n", uri);
1.61 frystyk 726: }
727: break;
728:
729: case HT_NO_DATA:
730: if (PROT_TRACE) {
1.67 frystyk 731: fprintf(TDEST, "HTAccess.... OK BUT NO DATA: `%s'\n", uri);
1.61 frystyk 732: }
733: break;
734:
735: case HT_WOULD_BLOCK:
736: if (PROT_TRACE) {
1.67 frystyk 737: fprintf(TDEST, "HTAccess.... WOULD BLOCK: `%s'\n", uri);
1.61 frystyk 738: }
739: break;
740:
741: case HT_ERROR:
742: if (HTImProxy)
743: HTErrorMsg(request); /* Only on a real error */
744: if (PROT_TRACE) {
1.67 frystyk 745: fprintf(TDEST, "HTAccess.... ERROR: Can't access `%s'\n", uri);
1.61 frystyk 746: }
747: break;
748:
749: default:
750: if (PROT_TRACE) {
1.67 frystyk 751: fprintf(TDEST, "HTAccess.... **** Internal software error in CERN WWWLib version %s ****\n", HTLibraryVersion);
752: fprintf(TDEST, "............ Please mail libwww@info.cern.ch quoting what software\n");
753: fprintf(TDEST, "............ and version you are using including the URL:\n");
754: fprintf(TDEST, "............ `%s\'\n", uri);
755: fprintf(TDEST, "............ that caused the problem, thanks!\n");
1.61 frystyk 756: }
757: break;
758: }
759: free(uri);
760: return YES;
761: }
762:
763:
1.2 timbl 764: /* Load a document - with logging etc
765: ** ----------------------------------
766: **
767: ** - Checks or documents already loaded
768: ** - Logs the access
769: ** - Trace ouput and error messages
770: **
1.1 timbl 771: ** On Entry,
1.19 timbl 772: ** request->anchor valid for of the document to be accessed.
773: ** request->childAnchor optional anchor within doc to be selected
774: **
1.15 timbl 775: ** request->anchor is the node_anchor for the document
776: ** request->output_format is valid
777: **
1.59 frystyk 778: ** On exit,
779: ** returns HT_WOULD_BLOCK An I/O operation would block
780: ** HT_ERROR Error has occured
781: ** HT_LOADED Success
782: ** HT_NO_DATA Success, but no document loaded.
783: ** (telnet sesssion started etc)
1.1 timbl 784: */
1.59 frystyk 785: PRIVATE int HTLoadDocument ARGS2(HTRequest *, request,
786: BOOL, keep_error_stack)
1.1 timbl 787:
788: {
789: int status;
790: HText * text;
1.19 timbl 791: char * full_address = HTAnchor_address((HTAnchor*)request->anchor);
1.54 frystyk 792:
1.67 frystyk 793: if (PROT_TRACE) fprintf (TDEST, "HTAccess.... Loading document %s\n",
1.59 frystyk 794: full_address);
1.1 timbl 795:
1.18 timbl 796: request->using_cache = NULL;
797:
1.15 timbl 798: if (!request->output_format) request->output_format = WWW_PRESENT;
1.25 frystyk 799:
1.67 frystyk 800: /* Check if document is already loaded or in cache */
1.70 frystyk 801: if (!request->ForceReload) {
1.67 frystyk 802: if ((text=(HText *)HTAnchor_document(request->anchor))) {
803: if (PROT_TRACE)
804: fprintf(TDEST, "HTAccess.... Document already in memory.\n");
805: if (request->childAnchor) {
806: HText_selectAnchor(text, request->childAnchor);
807: } else {
808: HText_select(text);
809: }
810: free(full_address);
811: return HT_LOADED;
1.19 timbl 812: }
1.67 frystyk 813:
814: /* Check the Cache */
815: /* Bug: for each format, we only check whether it is ok, we
816: don't check them all and chose the best */
817: if (request->anchor->cacheItems) {
818: HTList * list = request->anchor->cacheItems;
819: HTList * cur = list;
820: HTCacheItem * item;
821: while ((item = (HTCacheItem*)HTList_nextObject(cur))) {
822: HTStream * s;
823: request->using_cache = item;
824: s = HTStreamStack(item->format, request->output_format,
825: request->output_stream, request, NO);
826: if (s) { /* format was suitable */
827: FILE * fp = fopen(item->filename, "r");
828: if (PROT_TRACE)
1.70 frystyk 829: fprintf(TDEST, "Cache....... HIT file %s for %s\n",
1.67 frystyk 830: item->filename,
831: full_address);
832: if (fp) {
833: HTFileCopy(fp, s);
834: (*s->isa->_free)(s); /* close up pipeline */
835: fclose(fp);
836: free(full_address);
837: return HT_LOADED;
838: } else {
839: fprintf(TDEST, "***** Can't read cache file %s !\n",
840: item->filename);
841: } /* file open ok */
842: } /* stream ok */
843: } /* next cache item */
844: } /* if cache available for this anchor */
1.70 frystyk 845: } else { /* Make sure that we don't use old headers */
846: HTAnchor_clearHeader(request->anchor);
847: request->HeaderMask += HT_PRAGMA; /* Force reload through proxy */
1.1 timbl 848: }
1.61 frystyk 849: if ((status = HTLoad(request, keep_error_stack)) != HT_WOULD_BLOCK)
850: HTLoadTerminate(request, status);
1.19 timbl 851: free(full_address);
1.59 frystyk 852: return status;
1.58 frystyk 853: }
1.1 timbl 854:
855:
856: /* Load a document from absolute name
857: ** ---------------
858: **
1.59 frystyk 859: ** On Entry,
1.1 timbl 860: ** addr The absolute address of the document to be accessed.
861: **
1.59 frystyk 862: ** On exit,
863: ** returns HT_WOULD_BLOCK An I/O operation would block
864: ** HT_ERROR Error has occured
865: ** HT_LOADED Success
866: ** HT_NO_DATA Success, but no document loaded.
867: ** (telnet sesssion started etc)
1.1 timbl 868: */
869:
1.59 frystyk 870: PUBLIC int HTLoadAbsolute ARGS2(CONST char *,addr, HTRequest*, request)
1.2 timbl 871: {
1.19 timbl 872: HTAnchor * anchor = HTAnchor_findAddress(addr);
873: request->anchor = HTAnchor_parent(anchor);
874: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ?
875: NULL : (HTChildAnchor*) anchor;
1.52 frystyk 876: return HTLoadDocument(request, NO);
1.2 timbl 877: }
878:
879:
880: /* Load a document from absolute name to stream
881: ** --------------------------------------------
882: **
1.59 frystyk 883: ** On Entry,
1.2 timbl 884: ** addr The absolute address of the document to be accessed.
1.15 timbl 885: ** request->output_stream if non-NULL, send data down this stream
1.2 timbl 886: **
1.59 frystyk 887: ** On exit,
888: ** returns HT_WOULD_BLOCK An I/O operation would block
889: ** HT_ERROR Error has occured
890: ** HT_LOADED Success
891: ** HT_NO_DATA Success, but no document loaded.
892: ** (telnet sesssion started etc)
1.2 timbl 893: */
894:
1.59 frystyk 895: PUBLIC int HTLoadToStream ARGS3(CONST char *, addr,
896: BOOL, filter,
897: HTRequest*, request)
1.1 timbl 898: {
1.63 frystyk 899: HTAnchor * anchor = HTAnchor_findAddress(addr);
900: request->anchor = HTAnchor_parent(anchor);
901: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ? NULL :
1.19 timbl 902: (HTChildAnchor*) anchor;
1.15 timbl 903: request->output_stream = request->output_stream;
1.52 frystyk 904: return HTLoadDocument(request, NO);
1.1 timbl 905: }
906:
907:
908: /* Load a document from relative name
909: ** ---------------
910: **
1.59 frystyk 911: ** On Entry,
1.2 timbl 912: ** relative_name The relative address of the document
913: ** to be accessed.
1.1 timbl 914: **
1.59 frystyk 915: ** On exit,
916: ** returns HT_WOULD_BLOCK An I/O operation would block
917: ** HT_ERROR Error has occured
918: ** HT_LOADED Success
919: ** HT_NO_DATA Success, but no document loaded.
920: ** (telnet sesssion started etc)
1.1 timbl 921: */
922:
1.59 frystyk 923: PUBLIC int HTLoadRelative ARGS3(CONST char *, relative_name,
924: HTParentAnchor *, here,
925: HTRequest *, request)
1.1 timbl 926: {
927: char * full_address = 0;
1.65 frystyk 928: int result;
1.1 timbl 929: char * mycopy = 0;
930: char * stripped = 0;
931: char * current_address =
1.2 timbl 932: HTAnchor_address((HTAnchor*)here);
1.1 timbl 933:
934: StrAllocCopy(mycopy, relative_name);
935:
936: stripped = HTStrip(mycopy);
937: full_address = HTParse(stripped,
938: current_address,
939: PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
1.15 timbl 940: result = HTLoadAbsolute(full_address, request);
1.1 timbl 941: free(full_address);
942: free(current_address);
943: free(mycopy); /* Memory leak fixed 10/7/92 -- JFG */
944: return result;
945: }
946:
947:
948: /* Load if necessary, and select an anchor
949: ** --------------------------------------
950: **
1.59 frystyk 951: ** On Entry,
1.1 timbl 952: ** destination The child or parenet anchor to be loaded.
953: **
1.59 frystyk 954: ** On exit,
955: ** returns HT_WOULD_BLOCK An I/O operation would block
956: ** HT_ERROR Error has occured
957: ** HT_LOADED Success
958: ** HT_NO_DATA Success, but no document loaded.
959: ** (telnet sesssion started etc)
1.1 timbl 960: */
961:
1.59 frystyk 962: PUBLIC int HTLoadAnchor ARGS2(HTAnchor*, anchor, HTRequest *, request)
1.1 timbl 963: {
1.70 frystyk 964: if (!anchor || !request)
965: return HT_ERROR;
966: request->anchor = HTAnchor_parent(anchor);
1.59 frystyk 967: request->childAnchor = ((HTAnchor *) request->anchor == anchor) ?
968: NULL : (HTChildAnchor*) anchor;
969: return HTLoadDocument(request, NO);
970: }
1.52 frystyk 971:
972:
973: /* Load if necessary, and select an anchor
974: ** --------------------------------------
975: **
976: ** This function is almost identical to HTLoadAnchor, but it doesn't
977: ** clear the error stack so that the information in there is kept.
978: **
1.59 frystyk 979: ** On Entry,
1.52 frystyk 980: ** destination The child or parenet anchor to be loaded.
981: **
1.59 frystyk 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)
1.52 frystyk 988: */
989:
1.59 frystyk 990: PUBLIC int HTLoadAnchorRecursive ARGS2(HTAnchor*, anchor,
991: HTRequest *, request)
1.52 frystyk 992: {
1.59 frystyk 993: if (!anchor) return HT_ERROR; /* No link */
1.52 frystyk 994:
995: request->anchor = HTAnchor_parent(anchor);
1.59 frystyk 996: request->childAnchor = ((HTAnchor *) request->anchor == anchor) ?
997: NULL : (HTChildAnchor*) anchor;
1.52 frystyk 998:
1.59 frystyk 999: return HTLoadDocument(request, YES);
1000: }
1.1 timbl 1001:
1002:
1003: /* Search
1004: ** ------
1005: ** Performs a keyword search on word given by the user. Adds the keyword to
1006: ** the end of the current address and attempts to open the new address.
1007: **
1008: ** On Entry,
1009: ** *keywords space-separated keyword list or similar search list
1.2 timbl 1010: ** here is anchor search is to be done on.
1.59 frystyk 1011: **
1012: ** On exit,
1013: ** returns HT_WOULD_BLOCK An I/O operation would block
1014: ** HT_ERROR Error has occured
1015: ** HT_LOADED Success
1016: ** HT_NO_DATA Success, but no document loaded.
1017: ** (telnet sesssion started etc)
1.1 timbl 1018: */
1019:
1.56 frystyk 1020: PRIVATE char hex ARGS1(int, i)
1.2 timbl 1021: {
1.13 timbl 1022: char * hexchars = "0123456789ABCDEF";
1023: return hexchars[i];
1.2 timbl 1024: }
1.1 timbl 1025:
1.59 frystyk 1026: PUBLIC int HTSearch ARGS3(CONST char *, keywords,
1027: HTParentAnchor *, here,
1028: HTRequest *, request)
1.1 timbl 1029: {
1.2 timbl 1030:
1031: #define acceptable \
1032: "1234567890abcdefghijlkmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_"
1033:
1034: char *q, *u;
1035: CONST char * p, *s, *e; /* Pointers into keywords */
1036: char * address = HTAnchor_address((HTAnchor*)here);
1.65 frystyk 1037: int result;
1.56 frystyk 1038: char * escaped = (char *) malloc(strlen(keywords)*3+1);
1.2 timbl 1039:
1.29 frystyk 1040: /* static CONST BOOL isAcceptable[96] = */
1041: /* static AND const is not good for a gnu compiler! Frystyk 25/02-94 */
1.30 luotonen 1042: static BOOL isAcceptable[96] =
1.2 timbl 1043: /* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
1044: { 0,0,0,0,0,0,0,0,0,0,1,0,0,1,1,0, /* 2x !"#$%&'()*+,-./ */
1045: 1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0, /* 3x 0123456789:;<=>? */
1046: 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 4x @ABCDEFGHIJKLMNO */
1047: 1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,1, /* 5X PQRSTUVWXYZ[\]^_ */
1048: 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 6x `abcdefghijklmno */
1049: 1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0 }; /* 7X pqrstuvwxyz{\}~ DEL */
1050:
1051: if (escaped == NULL) outofmem(__FILE__, "HTSearch");
1052:
1.29 frystyk 1053: /* Convert spaces to + and hex escape unacceptable characters */
1.2 timbl 1054:
1.29 frystyk 1055: for(s=keywords; *s && WHITE(*s); s++); /*scan */ /* Skip white space */
1056: for(e = s + strlen(s); e>s && WHITE(*(e-1)) ; e--); /* Skip trailers */
1057: for(q=escaped, p=s; p<e; p++) { /* scan stripped field */
1.2 timbl 1058: int c = (int)TOASCII(*p);
1059: if (WHITE(*p)) {
1060: *q++ = '+';
1.29 frystyk 1061: } else if (c>=32 && c<=127 && isAcceptable[c-32] != 0) {
1.13 timbl 1062: *q++ = *p; /* 930706 TBL for MVS bug */
1.2 timbl 1063: } else {
1064: *q++ = '%';
1065: *q++ = hex(c / 16);
1066: *q++ = hex(c % 16);
1067: }
1068: } /* Loop over string */
1.1 timbl 1069:
1.2 timbl 1070: *q=0;
1071: /* terminate escaped sctring */
1072: u=strchr(address, '?'); /* Find old search string */
1073: if (u) *u = 0; /* Chop old search off */
1.1 timbl 1074:
1075: StrAllocCat(address, "?");
1.2 timbl 1076: StrAllocCat(address, escaped);
1077: free(escaped);
1.15 timbl 1078: result = HTLoadRelative(address, here, request);
1.1 timbl 1079: free(address);
1.2 timbl 1080:
1.1 timbl 1081: return result;
1.2 timbl 1082: }
1083:
1084:
1085: /* Search Given Indexname
1086: ** ------
1087: ** Performs a keyword search on word given by the user. Adds the keyword to
1088: ** the end of the current address and attempts to open the new address.
1089: **
1.59 frystyk 1090: ** On Entry,
1.2 timbl 1091: ** *keywords space-separated keyword list or similar search list
1092: ** *addres is name of object search is to be done on.
1.59 frystyk 1093: ** On exit,
1094: ** returns HT_WOULD_BLOCK An I/O operation would block
1095: ** HT_ERROR Error has occured
1096: ** HT_LOADED Success
1097: ** HT_NO_DATA Success, but no document loaded.
1098: ** (telnet sesssion started etc)
1.2 timbl 1099: */
1100:
1.59 frystyk 1101: PUBLIC int HTSearchAbsolute ARGS3(CONST char *, keywords,
1102: CONST char *, indexname,
1103: HTRequest *, request)
1.2 timbl 1104: {
1105: HTParentAnchor * anchor =
1106: (HTParentAnchor*) HTAnchor_findAddress(indexname);
1.15 timbl 1107: return HTSearch(keywords, anchor, request);
1.57 howcome 1108: }
1109:
1.70 frystyk 1110: /* --------------------------------------------------------------------------*/
1111: /* Document Poster */
1112: /* --------------------------------------------------------------------------*/
1113:
1114: /* Get a save stream for a document
1115: ** --------------------------------
1116: */
1117: PUBLIC HTStream *HTSaveStream ARGS1(HTRequest *, request)
1118: {
1119: HTProtocol * p;
1120: int status;
1121: request->method = METHOD_PUT;
1122: status = get_physical(request);
1123: if (status == HT_FORBIDDEN) {
1124: char *url = HTAnchor_address((HTAnchor *) request->anchor);
1125: if (url) {
1126: HTUnEscape(url);
1127: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1128: (void *) url, (int) strlen(url), "HTLoad");
1129: free(url);
1130: } else {
1131: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1132: NULL, 0, "HTLoad");
1133: }
1134: return NULL; /* should return error status? */
1135: }
1136: if (status < 0) return NULL; /* @@ error. Can't resolve or forbidden */
1137:
1138: p = (HTProtocol *) HTAnchor_protocol(request->anchor);
1139: if (!p) return NULL;
1140:
1141: return (*p->saveStream)(request);
1142:
1143: }
1144:
1145: /* COPY AN ANCHOR
1146: ** --------------
1147: ** Fetch the URL (possibly local file URL) and send it using either PUT
1148: ** or POST to the remote destination using HTTP. The caller can decide the
1149: ** exact method used and which HTTP header fields to transmit by setting the
1150: ** user fields in the request structure.
1151: **
1152: ** returns HT_WOULD_BLOCK An I/O operation would block
1153: ** HT_ERROR Error has occured
1154: ** HT_LOADED Success
1155: ** HT_NO_DATA Success, but no document loaded.
1156: */
1157: PUBLIC int HTCopyAnchor ARGS4(HTAnchor *, src_anchor,
1158: HTRequest *, src_req,
1159: HTParentAnchor *, dest_anchor,
1160: HTRequest *, dest_req)
1161: {
1162: if (!(src_anchor && src_req && dest_anchor && dest_req))
1163: return HT_ERROR;
1164:
1165: if (!(dest_anchor->methods & dest_req->method)) {
1166: char buf[80];
1167: sprintf(buf, "It might not be allowed to %s to this destination, continue?", HTMethod_name(dest_req->method));
1168: if (!HTConfirm(buf))
1169: return HT_ERROR;
1170: }
1171:
1172: /* First open the destination then open the source */
1173: if (HTLoadAnchor((HTAnchor *) dest_anchor, dest_req) != HT_ERROR) {
1174: src_req->ForceReload = YES;
1175: src_req->HeaderMask += HT_DATE; /* Send date header */
1176: if (src_req->output_format == WWW_PRESENT) /* Use source */
1177: src_req->output_format = WWW_SOURCE;
1178:
1179: /* Now make the link between the two request structures. First setup
1180: the output stream of the source so that data get redirected to
1181: the destination. Then set up the call back function so that
1182: the destination can call for more data */
1183: src_req->output_stream = dest_req->input_stream;
1184: dest_req->CopyRequest = src_req;
1185: dest_req->PostCallBack = HTSocketRead;
1186:
1187: return HTLoadAnchor(src_anchor, src_req);
1188: }
1189: return HT_ERROR;
1190: }
1191:
1192:
1193: /* UPLOAD AN ANCHOR
1194: ** ----------------
1195: ** Send the contents (in hyperdoc) of the source anchor using either PUT
1196: ** or POST to the remote destination using HTTP. The caller can decide the
1197: ** exact method used and which HTTP header fields to transmit by setting the
1198: ** user fields in the request structure.
1199: **
1200: ** returns HT_WOULD_BLOCK An I/O operation would block
1201: ** HT_ERROR Error has occured
1202: ** HT_LOADED Success
1203: ** HT_NO_DATA Success, but no document loaded.
1204: */
1205: PUBLIC int HTUploadAnchor ARGS3(HTAnchor *, src_anchor,
1206: HTParentAnchor *, dest_anchor,
1207: HTRequest *, dest_req)
1208: {
1209: if (!(src_anchor && dest_anchor && dest_req))
1210: return HT_ERROR;
1211:
1212: if (!(dest_anchor->methods & dest_req->method)) {
1213: char buf[80];
1214: sprintf(buf, "It might not be allowed to %s to this destination, continue?", HTMethod_name(dest_req->method));
1215: if (!HTConfirm(buf))
1216: return HT_ERROR;
1217: }
1218:
1219: return HT_ERROR;
1220: }
1221:
1222: /* --------------------------------------------------------------------------*/
1223: /* Anchor help routines */
1224: /* --------------------------------------------------------------------------*/
1.57 howcome 1225:
1226: /*
1227: ** Find Related Name
1228: **
1229: ** Creates a string that can be used as a related name when
1230: ** calling HTParse initially.
1231: **
1232: ** The code for this routine originates from the Linemode
1233: ** browser and was moved here by howcome@dxcern.cern.ch
1234: ** in order for all clients to take advantage.
1235: **
1.59 frystyk 1236: ** The string returned must be freed by the caller
1.57 howcome 1237: */
1238: PUBLIC char * HTFindRelatedName NOARGS
1239: {
1.59 frystyk 1240: char* default_default = NULL; /* Parse home relative to this */
1241: CONST char *host = HTGetHostName();
1.57 howcome 1242: StrAllocCopy(default_default, "file://");
1.59 frystyk 1243: if (host)
1244: StrAllocCat(default_default, host);
1245: else
1246: StrAllocCat(default_default, "localhost");
1247: {
1248: char wd[HT_MAX_PATH+1];
1.67 frystyk 1249:
1250: #ifdef NO_GETWD
1251: #ifdef HAS_GETCWD /* System V variant SIGN CHANGED TBL 921006 !! */
1252: char *result = (char *) getcwd(wd, sizeof(wd));
1253: #else
1254: char *result = NULL;
1255: HTAlert("This platform does not support neither getwd nor getcwd\n");
1256: #endif
1257: #else
1258: char *result = (char *) getwd(wd);
1259: #endif
1.59 frystyk 1260: *(wd+HT_MAX_PATH) = '\0';
1.57 howcome 1261: if (result) {
1262: #ifdef VMS
1263: /* convert directory name to Unix-style syntax */
1264: char * disk = strchr (wd, ':');
1265: char * dir = strchr (wd, '[');
1266: if (disk) {
1267: *disk = '\0';
1268: StrAllocCat (default_default, "/"); /* needs delimiter */
1269: StrAllocCat (default_default, wd);
1270: }
1271: if (dir) {
1272: char *p;
1273: *dir = '/'; /* Convert leading '[' */
1274: for (p = dir ; *p != ']'; ++p)
1275: if (*p == '.') *p = '/';
1276: *p = '\0'; /* Cut on final ']' */
1277: StrAllocCat (default_default, dir);
1278: }
1.70 frystyk 1279: #else
1280: #ifdef WIN32
1281: char * p = wd ; /* a colon */
1282: StrAllocCat(default_default, "/");
1283:
1284: /**p++ = '|' ; /* change to '|' */
1285: while( *p != 0 ) {
1286: if (*p == '\\') /* change to one true slash */
1287: *p = '/' ;
1288: p++;
1289: }
1290: StrAllocCat( default_default, wd) ;
1291: #else
1.57 howcome 1292: StrAllocCat (default_default, wd);
1.70 frystyk 1293: #endif /* not WIN32 */
1.67 frystyk 1294: #endif /* not VMS */
1.57 howcome 1295: }
1.67 frystyk 1296: }
1.57 howcome 1297: StrAllocCat(default_default, "/default.html");
1298: return default_default;
1.2 timbl 1299: }
1300:
1301:
1302: /* Generate the anchor for the home page
1303: ** -------------------------------------
1304: **
1305: ** As it involves file access, this should only be done once
1306: ** when the program first runs.
1.10 timbl 1307: ** This is a default algorithm -- browser don't HAVE to use this.
1308: ** But consistency betwen browsers is STRONGLY recommended!
1.2 timbl 1309: **
1.10 timbl 1310: ** Priority order is:
1311: **
1312: ** 1 WWW_HOME environment variable (logical name, etc)
1313: ** 2 ~/WWW/default.html
1314: ** 3 /usr/local/bin/default.html
1.70 frystyk 1315: ** 4 http://www.w3.org/default.html
1.10 timbl 1316: **
1.2 timbl 1317: */
1318: PUBLIC HTParentAnchor * HTHomeAnchor NOARGS
1319: {
1.12 timbl 1320: char * my_home_document = NULL;
1.70 frystyk 1321: char * home = (char *) getenv(LOGICAL_DEFAULT);
1.2 timbl 1322: char * ref;
1323: HTParentAnchor * anchor;
1.1 timbl 1324:
1.70 frystyk 1325: /* Someone telnets in, they get a special home */
1.12 timbl 1326: if (home) {
1327: StrAllocCopy(my_home_document, home);
1.70 frystyk 1328: } else if (HTClientHost) { /* Telnet server */
1.12 timbl 1329: FILE * fp = fopen(REMOTE_POINTER, "r");
1330: char * status;
1331: if (fp) {
1.59 frystyk 1332: my_home_document = (char*) malloc(HT_MAX_PATH);
1333: status = fgets(my_home_document, HT_MAX_PATH, fp);
1.12 timbl 1334: if (!status) {
1335: free(my_home_document);
1336: my_home_document = NULL;
1337: }
1338: fclose(fp);
1339: }
1340: if (!my_home_document) StrAllocCopy(my_home_document, REMOTE_ADDRESS);
1341: }
1342:
1.67 frystyk 1343: #ifdef unix
1.10 timbl 1344: if (!my_home_document) {
1345: FILE * fp = NULL;
1.70 frystyk 1346: char * home = (char *) getenv("HOME");
1.10 timbl 1347: if (home) {
1348: my_home_document = (char *)malloc(
1349: strlen(home)+1+ strlen(PERSONAL_DEFAULT)+1);
1350: if (my_home_document == NULL) outofmem(__FILE__, "HTLocalName");
1351: sprintf(my_home_document, "%s/%s", home, PERSONAL_DEFAULT);
1352: fp = fopen(my_home_document, "r");
1353: }
1354:
1355: if (!fp) {
1356: StrAllocCopy(my_home_document, LOCAL_DEFAULT_FILE);
1357: fp = fopen(my_home_document, "r");
1358: }
1.2 timbl 1359: if (fp) {
1360: fclose(fp);
1361: } else {
1.62 frystyk 1362: if (TRACE)
1.67 frystyk 1363: fprintf(TDEST,
1.62 frystyk 1364: "HTBrowse: No local home document ~/%s or %s\n",
1365: PERSONAL_DEFAULT, LOCAL_DEFAULT_FILE);
1.11 timbl 1366: free(my_home_document);
1367: my_home_document = NULL;
1.2 timbl 1368: }
1369: }
1.67 frystyk 1370: #endif
1.70 frystyk 1371: ref = HTParse(my_home_document ? my_home_document :
1372: HTClientHost ? REMOTE_ADDRESS : LAST_RESORT, "file:",
1373: PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
1.10 timbl 1374: if (my_home_document) {
1.62 frystyk 1375: if (TRACE)
1.67 frystyk 1376: fprintf(TDEST,
1.62 frystyk 1377: "HTAccess.... `%s\' used for custom home page as\n`%s\'\n",
1378: my_home_document, ref);
1.10 timbl 1379: free(my_home_document);
1.2 timbl 1380: }
1381: anchor = (HTParentAnchor*) HTAnchor_findAddress(ref);
1382: free(ref);
1383: return anchor;
1.1 timbl 1384: }
1.26 frystyk 1385:
1386:
1387: /* Bind an Anchor to the request structure
1388: ** ---------------------------------------
1389: **
1390: ** On Entry,
1391: ** anchor The child or parenet anchor to be binded
1392: ** request The request sturcture
1393: ** On Exit,
1394: ** returns YES Success
1395: ** NO Failure
1396: **
1397: ** Note: Actually the same as HTLoadAnchor() but DOES NOT do the loading
1398: ** Henrik Frystyk 17/02-94
1399: */
1400:
1401: PUBLIC BOOL HTBindAnchor ARGS2(HTAnchor*, anchor, HTRequest *, request)
1402: {
1403: if (!anchor) return NO; /* No link */
1404:
1405: request->anchor = HTAnchor_parent(anchor);
1406: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ? NULL
1407: : (HTChildAnchor*) anchor;
1408:
1.29 frystyk 1409: return YES;
1.70 frystyk 1410: }
1.59 frystyk 1411:
1.26 frystyk 1412:
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