Annotation of libwww/Library/src/HTAccess.c, revision 1.78
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
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"
1.78 ! frystyk 35: #include "HTString.h"
1.1 timbl 36: #include "HTParse.h"
1.78 ! frystyk 37: #include "HTAlert.h"
! 38: #include "HTError.h"
1.2 timbl 39: #include "HTList.h"
1.78 ! frystyk 40: #include "HTAABrow.h" /* Should be HTAAUtil.html! */
1.67 frystyk 41: #include "HTFWrite.h" /* for cache stuff */
1.70 frystyk 42: #include "HTLog.h"
1.77 frystyk 43: #include "HTSocket.h"
1.57 howcome 44: #include "HTTCP.h" /* HWL: for HTFindRelatedName */
1.59 frystyk 45: #include "HTThread.h"
1.63 frystyk 46: #include "HTEvent.h"
1.73 frystyk 47: #include "HTBind.h"
1.70 frystyk 48: #include "HTInit.h"
1.77 frystyk 49: #include "HTProxy.h"
1.78 ! frystyk 50: #include "HTML.h" /* SCW */
! 51: #include "HText.h" /* See bugs above */
1.74 frystyk 52:
1.67 frystyk 53: #ifndef NO_RULES
54: #include "HTRules.h"
55: #endif
1.74 frystyk 56:
1.67 frystyk 57: #include "HTAccess.h" /* Implemented here */
1.2 timbl 58:
1.54 frystyk 59: /* These flags may be set to modify the operation of this module */
1.73 frystyk 60: PUBLIC int HTMaxRedirections = 10; /* Max number of redirections */
61:
1.78 ! frystyk 62: PUBLIC char * HTClientHost = NULL; /* Name of remote login host if any */
1.70 frystyk 63: PUBLIC BOOL HTSecure = NO; /* Disable access for telnet users? */
1.41 luotonen 64:
1.43 luotonen 65: PUBLIC char * HTImServer = NULL;/* cern_httpd sets this to the translated URL*/
1.70 frystyk 66: PUBLIC BOOL HTImProxy = NO; /* cern_httpd as a proxy? */
1.1 timbl 67:
1.74 frystyk 68: #ifdef _WINDOWS
69: PUBLIC HWND HTsocketWin = 0 ;
70: unsigned long HTwinMsg = 0 ;
71: #endif
72:
1.78 ! frystyk 73: /* Variables and typedefs local to this module */
! 74: PRIVATE HTList * protocols = NULL; /* List of registered protocols */
! 75:
1.63 frystyk 76: /* Superclass defn */
1.24 timbl 77: struct _HTStream {
78: HTStreamClass * isa;
79: /* ... */
80: };
81:
1.59 frystyk 82: /* --------------------------------------------------------------------------*/
83: /* Management of the HTRequest structure */
84: /* --------------------------------------------------------------------------*/
85:
1.15 timbl 86: /* Create a request structure
87: ** ---------------------------
88: */
89: PUBLIC HTRequest * HTRequest_new NOARGS
90: {
1.28 luotonen 91: HTRequest * me = (HTRequest*) calloc(1, sizeof(*me)); /* zero fill */
1.15 timbl 92: if (!me) outofmem(__FILE__, "HTRequest_new()");
93:
1.77 frystyk 94: /* User preferences for this particular request. Only empty lists! */
95: me->conversions = HTList_new();
96: me->encodings = HTList_new();
97: me->languages = HTList_new();
98: me->charsets = HTList_new();
99:
100: /* Format of output */
1.70 frystyk 101: me->output_format = WWW_PRESENT; /* default it to present to user */
1.72 frystyk 102: me->error_format = WWW_HTML; /* default format of error messages */
1.77 frystyk 103:
104: /* HTTP headers */
105: me->GenMask = DEFAULT_GENERAL_HEADERS;
106: me->RequestMask = DEFAULT_REQUEST_HEADERS;
107: me->EntityMask = DEFAULT_ENTITY_HEADERS;
108:
109: /* Content negotiation */
110: me->ContentNegotiation = NO; /* Do this by default */
1.74 frystyk 111:
112: #ifdef _WINDOWS
113: me->hwnd = HTsocketWin;
114: me->winMsg = HTwinMsg;
115: #endif
116:
1.15 timbl 117: return me;
118: }
119:
120:
1.49 frystyk 121: /* Clear a request structure
122: ** ---------------------------
123: ** This function clears the reguest structure so that only the
124: ** conversions remain. Everything else is as if it was created from
125: ** scratch.
126: */
127: PUBLIC void HTRequest_clear ARGS1(HTRequest *, req)
128: {
129: HTList *conversions;
130: if (!req) {
131: if (TRACE)
1.67 frystyk 132: fprintf(TDEST, "Clear....... request: Bad argument!\n");
1.49 frystyk 133: return;
134: }
135: conversions = req->conversions; /* Save the conversions */
136: HTErrorFree(req);
137: HTAACleanup(req);
138: memset(req, '\0', sizeof(HTRequest));
139:
140: /* Now initialize as from scratch but with the old list of conversions */
141: req->conversions = conversions;
142: req->output_format = WWW_PRESENT; /* default it to present to user */
1.74 frystyk 143:
144: #ifdef _WINDOWS
1.76 frystyk 145: req->hwnd = HTsocketWin ;
146: req->winMsg = HTwinMsg ;
1.74 frystyk 147: #endif
148:
1.49 frystyk 149: }
150:
151:
1.20 luotonen 152: /* Delete a request structure
153: ** --------------------------
154: */
155: PUBLIC void HTRequest_delete ARGS1(HTRequest *, req)
156: {
157: if (req) {
1.59 frystyk 158: FREE(req->redirect);
159: FREE(req->authenticate);
160: HTFormatDelete(req);
1.46 frystyk 161: HTErrorFree(req);
1.34 frystyk 162: HTAACleanup(req);
1.78 ! frystyk 163: if (req->CopyRequest)
! 164: HTRequest_delete(req->CopyRequest);
1.61 frystyk 165:
166: /* These are temporary until we get a MIME thingy */
167: FREE(req->redirect);
168: FREE(req->WWWAAScheme);
169: FREE(req->WWWAARealm);
170: FREE(req->WWWprotection);
171:
1.34 frystyk 172: FREE(req);
1.20 luotonen 173: }
174: }
175:
1.59 frystyk 176: /* --------------------------------------------------------------------------*/
177: /* Management of HTTP Methods */
178: /* --------------------------------------------------------------------------*/
1.20 luotonen 179:
1.70 frystyk 180: static char *method_names[] =
1.22 luotonen 181: {
182: "INVALID-METHOD",
183: "GET",
184: "HEAD",
185: "POST",
186: "PUT",
187: "DELETE",
188: "LINK",
189: "UNLINK",
190: NULL
191: };
192:
193: /* Get method enum value
194: ** ---------------------
195: */
1.70 frystyk 196: PUBLIC HTMethod HTMethod_enum ARGS1(CONST char *, name)
1.22 luotonen 197: {
198: if (name) {
1.70 frystyk 199: if (!strcmp(name, *(method_names+1)))
200: return METHOD_GET;
201: else if (!strcmp(name, *(method_names+2)))
202: return METHOD_HEAD;
203: else if (!strcmp(name, *(method_names+3)))
204: return METHOD_POST;
205: else if (!strcmp(name, *(method_names+4)))
206: return METHOD_PUT;
207: else if (!strcmp(name, *(method_names+5)))
208: return METHOD_DELETE;
209: else if (!strcmp(name, *(method_names+6)))
210: return METHOD_LINK;
211: else if (!strcmp(name, *(method_names+7)))
212: return METHOD_UNLINK;
1.22 luotonen 213: }
214: return METHOD_INVALID;
215: }
216:
217:
218: /* Get method name
219: ** ---------------
1.70 frystyk 220: ** Returns pointer to entry in static table in memory
1.22 luotonen 221: */
1.70 frystyk 222: PUBLIC CONST char * HTMethod_name ARGS1(HTMethod, method)
1.22 luotonen 223: {
1.70 frystyk 224: if (method & METHOD_GET)
225: return *(method_names+1);
226: else if (method == METHOD_HEAD)
227: return *(method_names+2);
228: else if (method == METHOD_POST)
229: return *(method_names+3);
230: else if (method == METHOD_PUT)
231: return *(method_names+4);
232: else if (method == METHOD_DELETE)
233: return *(method_names+5);
234: else if (method == METHOD_LINK)
235: return *(method_names+6);
236: else if (method == METHOD_UNLINK)
237: return *(method_names+7);
238: else
239: return *method_names;
240: #if 0
241: if ((int)METHOD_INVALID && (int)method < (int)MAX_METHODS)
1.22 luotonen 242: return method_names[(int)method];
243: else
244: return method_names[(int)METHOD_INVALID];
1.70 frystyk 245: #endif
1.22 luotonen 246: }
247:
248:
1.70 frystyk 249: #if 0
250: /* NOT NEEDED AS METHODS IS NOT A BIT-FLAG */
1.22 luotonen 251: /* Is method in a list of method names?
252: ** -----------------------------------
253: */
254: PUBLIC BOOL HTMethod_inList ARGS2(HTMethod, method,
255: HTList *, list)
256: {
257: char * method_name = HTMethod_name(method);
258: HTList *cur = list;
259: char *item;
260:
261: while (NULL != (item = (char*)HTList_nextObject(cur))) {
1.67 frystyk 262: if (PROT_TRACE)
263: fprintf(TDEST, " %s", item);
1.22 luotonen 264: if (0==strcasecomp(item, method_name))
265: return YES;
266: }
267: return NO; /* Not found */
268: }
1.70 frystyk 269: #endif
1.22 luotonen 270:
1.59 frystyk 271: /* --------------------------------------------------------------------------*/
272: /* Management of the HTProtocol structure */
273: /* --------------------------------------------------------------------------*/
1.22 luotonen 274:
1.63 frystyk 275: /*
276: ** Register a Protocol as an active access method
1.1 timbl 277: */
1.56 frystyk 278: PUBLIC BOOL HTRegisterProtocol ARGS1(HTProtocol *, protocol)
1.1 timbl 279: {
280: if (!protocols) protocols = HTList_new();
1.59 frystyk 281: HTList_addObject(protocols, (void *) protocol);
1.1 timbl 282: return YES;
283: }
284:
1.63 frystyk 285:
286: /*
287: ** Delete the list of registered access methods. This is called from
288: ** within HTLibTerminate. Written by Eric Sink, eric@spyglass.com
289: */
290: PUBLIC void HTDisposeProtocols NOARGS
291: {
292: if (protocols) {
293: HTList_delete(protocols);
294: protocols = NULL;
295: }
296: }
297:
298:
299: /*
1.65 frystyk 300: ** Is a protocol registered as BLOCKING? The default behavior registered
301: ** when the protocol module was registered can be overridden by the
302: ** BlockingIO field in the HTRequest structure
1.63 frystyk 303: */
1.59 frystyk 304: PUBLIC BOOL HTProtocolBlocking ARGS1(HTRequest *, me)
305: {
1.65 frystyk 306: if (me) {
307: return (me->BlockingIO || (me->anchor && me->anchor->protocol &&
308: ((HTProtocol *) (me->anchor->protocol))->block == SOC_BLOCK));
309: }
310: return NO;
1.59 frystyk 311: }
312:
1.61 frystyk 313: /* --------------------------------------------------------------------------*/
314: /* Initialization and Termination of the Library */
315: /* --------------------------------------------------------------------------*/
316:
317: /* HTLibInit
318: **
319: ** This function initiates the Library and it MUST be called when
320: ** starting up an application. See also HTLibTerminate()
321: */
322: PUBLIC BOOL HTLibInit NOARGS
323: {
1.67 frystyk 324: #ifdef NO_STDIO /* Open trace file */
325: if ((TDEST = fopen(TRACE_FILE, "a")) != NULL) {
326: if (setvbuf(TDEST, NULL, _IOLBF, 0) < 0) { /* Change to line buffer */
1.70 frystyk 327: printf("WWWLibInit.. Can't initialize TRACE buffer - no TRACE\n");
1.67 frystyk 328: fclose(TDEST);
329: TDEST = NULL;
330: WWW_TraceFlag = 0;
331: }
332: } else
333: WWW_TraceFlag = 0;
334: #endif
335:
1.61 frystyk 336: if (TRACE)
1.67 frystyk 337: fprintf(TDEST, "WWWLibInit.. INITIALIZING LIBRARY OF COMMON CODE\n");
1.63 frystyk 338:
1.77 frystyk 339: /* Set up User preferences, but leave initialization to the application */
1.73 frystyk 340: if (!HTConversions)
341: HTConversions = HTList_new();
1.77 frystyk 342: if (!HTEncodings)
343: HTEncodings = HTList_new();
344: if (!HTLanguages)
345: HTLanguages = HTList_new();
346: if (!HTCharsets)
347: HTCharsets = HTList_new();
348:
349: /* Set up bindings to the local file system */
350: HTBind_init();
1.73 frystyk 351:
1.70 frystyk 352: #ifndef HT_NO_INIT
353: HTAccessInit(); /* Bind access schemes and protocol modules */
354: HTFileInit(); /* Bind file extensions and media types */
1.63 frystyk 355: #endif
1.61 frystyk 356:
1.77 frystyk 357: #ifndef HT_DIRECT_WAIS
358: HTProxy_setGateway("wais", HT_DEFAULT_WAIS_GATEWAY);
359: #endif
360:
1.62 frystyk 361: #ifdef WWWLIB_SIG
1.61 frystyk 362: /* On Solaris (and others?) we get a BROKEN PIPE signal when connecting
1.67 frystyk 363: ** to a port where we should get `connection refused'. We ignore this
1.61 frystyk 364: ** using the following function call
365: */
366: HTSetSignal(); /* Set signals in library */
1.1 timbl 367: #endif
368:
1.67 frystyk 369: #ifdef _WINDOWS
370: /*
371: ** Initialise WinSock DLL. This must also be shut down! PMH
372: */
373: {
374: WSADATA wsadata;
375: if (WSAStartup(DESIRED_WINSOCK_VERSION, &wsadata)) {
376: if (TRACE)
377: fprintf(TDEST, "WWWLibInit.. Can't initialize WinSoc\n");
378: WSACleanup();
379: return NO;
380: }
381: if (wsadata.wVersion < MINIMUM_WINSOCK_VERSION) {
382: if (TRACE)
383: fprintf(TDEST, "WWWLibInit.. Bad version of WinSoc\n");
384: WSACleanup();
385: return NO;
386: }
387: }
388: #endif /* _WINDOWS */
389:
1.71 frystyk 390: #ifndef NO_TIMEGM
391: HTGetTimeZoneOffset(); /* Find offset from GMT if using mktime() */
392: #endif
1.70 frystyk 393: HTTmp_setRoot(NULL); /* Set up default tmp directory */
1.61 frystyk 394: HTThreadInit(); /* Initialize bit arrays */
395: return YES;
396: }
397:
398:
399: /* HTLibTerminate
400: **
401: ** This function frees memory kept by the Library and should be called
1.63 frystyk 402: ** before exit of an application (if you are on a PC platform)
1.61 frystyk 403: */
404: PUBLIC BOOL HTLibTerminate NOARGS
405: {
406: if (TRACE)
1.67 frystyk 407: fprintf(TDEST, "WWWLibTerm.. Cleaning up LIBRARY OF COMMON CODE\n");
1.63 frystyk 408: HTAtom_deleteAll();
409: HTDisposeConversions();
410: HTTCPCacheRemoveAll();
1.73 frystyk 411:
412: #ifndef HT_NO_INIT
413: HTDisposeProtocols(); /* Remove bindings between access and protocols */
414: HTBind_deleteAll(); /* Remove bindings between suffixes, media types */
415: #endif
416:
1.77 frystyk 417: HTProxy_deleteProxy(); /* Clean up lists of proxies and gateways */
418: HTProxy_deleteNoProxy();
419: HTProxy_deleteGateway();
420:
421: HTFreeHostName(); /* Free up some internal strings */
1.63 frystyk 422: HTFreeMailAddress();
1.70 frystyk 423: HTCache_freeRoot();
424: HTTmp_freeRoot();
1.67 frystyk 425:
426: #ifdef _WINDOWS
427: WSACleanup();
428: #endif
429:
430: #ifdef NO_STDIO /* Close trace file */
431: if (TDEST) {
432: fclose(TDEST);
433: TDEST = NULL;
434: WWW_TraceFlag = 0;
435: }
436: #endif
1.61 frystyk 437: return YES;
438: }
439:
1.59 frystyk 440: /* --------------------------------------------------------------------------*/
441: /* Physical Anchor Address Manager */
442: /* --------------------------------------------------------------------------*/
1.33 luotonen 443:
1.77 frystyk 444: #ifdef OLD_CODE
1.33 luotonen 445: /* override_proxy()
446: **
447: ** Check the no_proxy environment variable to get the list
448: ** of hosts for which proxy server is not consulted.
449: **
450: ** no_proxy is a comma- or space-separated list of machine
451: ** or domain names, with optional :port part. If no :port
452: ** part is present, it applies to all ports on that domain.
453: **
454: ** Example:
455: ** no_proxy="cern.ch,some.domain:8001"
456: **
457: */
458: PRIVATE BOOL override_proxy ARGS1(CONST char *, addr)
459: {
460: CONST char * no_proxy = getenv("no_proxy");
461: char * p = NULL;
462: char * host = NULL;
463: int port = 0;
464: int h_len = 0;
465:
466: if (!no_proxy || !addr || !(host = HTParse(addr, "", PARSE_HOST)))
467: return NO;
468: if (!*host) { free(host); return NO; }
469:
1.34 frystyk 470: if ((p = strchr(host, ':')) != NULL) { /* Port specified */
1.33 luotonen 471: *p++ = 0; /* Chop off port */
472: port = atoi(p);
473: }
474: else { /* Use default port */
475: char * access = HTParse(addr, "", PARSE_ACCESS);
476: if (access) {
477: if (!strcmp(access,"http")) port = 80;
478: else if (!strcmp(access,"gopher")) port = 70;
479: else if (!strcmp(access,"ftp")) port = 21;
480: free(access);
481: }
482: }
483: if (!port) port = 80; /* Default */
484: h_len = strlen(host);
485:
486: while (*no_proxy) {
487: CONST char * end;
488: CONST char * colon = NULL;
489: int templ_port = 0;
490: int t_len;
491:
492: while (*no_proxy && (WHITE(*no_proxy) || *no_proxy==','))
493: no_proxy++; /* Skip whitespace and separators */
494:
495: end = no_proxy;
496: while (*end && !WHITE(*end) && *end != ',') { /* Find separator */
497: if (*end==':') colon = end; /* Port number given */
498: end++;
499: }
500:
501: if (colon) {
502: templ_port = atoi(colon+1);
503: t_len = colon - no_proxy;
504: }
505: else {
506: t_len = end - no_proxy;
507: }
508:
509: if ((!templ_port || templ_port == port) &&
510: (t_len > 0 && t_len <= h_len &&
511: !strncmp(host + h_len - t_len, no_proxy, t_len))) {
512: free(host);
513: return YES;
514: }
515: if (*end) no_proxy = end+1;
516: else break;
517: }
518:
519: free(host);
520: return NO;
521: }
1.77 frystyk 522: #endif /* OLD_CODE */
1.33 luotonen 523:
524:
1.2 timbl 525: /* Find physical name and access protocol
526: ** --------------------------------------
1.1 timbl 527: **
528: **
529: ** On entry,
530: ** addr must point to the fully qualified hypertext reference.
531: ** anchor a pareent anchor with whose address is addr
532: **
1.59 frystyk 533: ** On exit,
534: ** returns HT_NO_ACCESS no protocol module found
535: ** HT_FORBIDDEN Error has occured.
1.2 timbl 536: ** HT_OK Success
1.1 timbl 537: **
538: */
1.21 luotonen 539: PRIVATE int get_physical ARGS1(HTRequest *, req)
540: {
541: char * addr = HTAnchor_address((HTAnchor*)req->anchor); /* free me */
1.27 luotonen 542:
1.70 frystyk 543: #ifndef HT_NO_RULES
1.47 luotonen 544: if (HTImServer) { /* cern_httpd has already done its own translations */
1.45 luotonen 545: HTAnchor_setPhysical(req->anchor, HTImServer);
1.47 luotonen 546: StrAllocCopy(addr, HTImServer); /* Oops, queries thru many proxies */
547: /* didn't work without this -- AL */
548: }
1.21 luotonen 549: else {
1.27 luotonen 550: char * physical = HTTranslate(addr);
1.21 luotonen 551: if (!physical) {
1.47 luotonen 552: free(addr);
1.21 luotonen 553: return HT_FORBIDDEN;
554: }
555: HTAnchor_setPhysical(req->anchor, physical);
556: free(physical); /* free our copy */
1.2 timbl 557: }
558: #else
1.21 luotonen 559: HTAnchor_setPhysical(req->anchor, addr);
1.70 frystyk 560: #endif /* HT_NO_RULES */
1.2 timbl 561:
1.77 frystyk 562: #ifdef OLDCODE
1.21 luotonen 563: access = HTParse(HTAnchor_physical(req->anchor),
1.27 luotonen 564: "file:", PARSE_ACCESS);
1.1 timbl 565:
1.77 frystyk 566: if (!override_proxy(addr)) {
1.39 luotonen 567: /* make sure the using_proxy variable is false */
1.70 frystyk 568: req->using_proxy = NO;
1.39 luotonen 569:
1.27 luotonen 570: char * gateway_parameter, *gateway, *proxy;
571:
1.2 timbl 572: gateway_parameter = (char *)malloc(strlen(access)+20);
573: if (gateway_parameter == NULL) outofmem(__FILE__, "HTLoad");
1.27 luotonen 574:
575: /* search for proxy gateways */
1.2 timbl 576: strcpy(gateway_parameter, "WWW_");
577: strcat(gateway_parameter, access);
578: strcat(gateway_parameter, "_GATEWAY");
579: gateway = (char *)getenv(gateway_parameter); /* coerce for decstation */
1.27 luotonen 580:
581: /* search for proxy servers */
582: strcpy(gateway_parameter, access);
583: strcat(gateway_parameter, "_proxy");
584: proxy = (char *)getenv(gateway_parameter);
585:
1.2 timbl 586: free(gateway_parameter);
1.27 luotonen 587:
1.68 frystyk 588: #ifndef HT_DIRECT_WAIS
1.9 timbl 589: if (!gateway && 0==strcmp(access, "wais")) {
1.69 frystyk 590: gateway = HT_DEFAULT_WAIS_GATEWAY;
1.8 timbl 591: }
592: #endif
1.27 luotonen 593:
1.70 frystyk 594: if (TRACE && gateway)
595: fprintf(TDEST,"Gateway..... Found: `%s\'\n", gateway);
596: if (TRACE && proxy)
597: fprintf(TDEST,"Proxy....... Found: `%s\'\n", proxy);
1.77 frystyk 598: #endif /* OLD_CODE */
1.70 frystyk 599:
1.77 frystyk 600: /*
601: ** Check whether gateway or proxy access has been set up for this url
602: */
603: {
604: char *proxy = HTProxy_getProxy(addr);
605: char *gateway = HTProxy_getGateway(addr);
1.27 luotonen 606:
1.77 frystyk 607: /* Proxy servers have precedence over gateway servers */
608: if (proxy) {
609: StrAllocCat(proxy, addr);
1.70 frystyk 610: req->using_proxy = YES;
1.77 frystyk 611: HTAnchor_setPhysical(req->anchor, proxy);
612: free(proxy);
613: } else if (gateway) {
1.9 timbl 614: char * path = HTParse(addr, "",
1.77 frystyk 615: PARSE_HOST + PARSE_PATH + PARSE_PUNCTUATION);
1.9 timbl 616: /* Chop leading / off to make host into part of path */
617: char * gatewayed = HTParse(path+1, gateway, PARSE_ALL);
1.77 frystyk 618: HTAnchor_setPhysical(req->anchor, gatewayed);
1.9 timbl 619: free(path);
620: free(gatewayed);
1.77 frystyk 621: free(gateway);
622: } else {
623: req->using_proxy = NO; /* We don't use proxy or gateway */
1.2 timbl 624: }
625: }
1.77 frystyk 626: FREE(addr);
1.1 timbl 627:
1.77 frystyk 628: /*
629: ** Search registered protocols to find suitable one
630: */
1.1 timbl 631: {
1.77 frystyk 632: char *access = HTParse(HTAnchor_physical(req->anchor),"",PARSE_ACCESS);
1.61 frystyk 633: HTList *cur = protocols;
1.20 luotonen 634: HTProtocol *p;
1.61 frystyk 635: if (!cur) {
636: if (TRACE)
1.67 frystyk 637: fprintf(TDEST, "HTAccess.... NO PROTOCOL MODULES INITIATED\n");
1.61 frystyk 638: } else {
639: while ((p = (HTProtocol*)HTList_nextObject(cur))) {
1.77 frystyk 640: if (strcmp(p->name, access)==0) { /* Case insensitive? */
1.61 frystyk 641: HTAnchor_setProtocol(req->anchor, p);
642: free(access);
643: return (HT_OK);
644: }
1.1 timbl 645: }
646: }
1.77 frystyk 647: free(access);
1.1 timbl 648: }
1.2 timbl 649: return HT_NO_ACCESS;
1.1 timbl 650: }
651:
1.59 frystyk 652: /* --------------------------------------------------------------------------*/
653: /* Document Loader */
654: /* --------------------------------------------------------------------------*/
1.1 timbl 655:
656: /* Load a document
657: ** ---------------
658: **
1.2 timbl 659: ** This is an internal routine, which has an address AND a matching
660: ** anchor. (The public routines are called with one OR the other.)
661: **
662: ** On entry,
1.15 timbl 663: ** request->
1.35 luotonen 664: ** anchor a parent anchor with fully qualified
665: ** hypertext reference as its address set
1.15 timbl 666: ** output_format valid
667: ** output_stream valid on NULL
1.2 timbl 668: **
669: ** On exit,
1.59 frystyk 670: ** returns HT_WOULD_BLOCK An I/O operation would block
671: ** HT_ERROR Error has occured
1.2 timbl 672: ** HT_LOADED Success
673: ** HT_NO_DATA Success, but no document loaded.
1.8 timbl 674: ** (telnet sesssion started etc)
1.72 frystyk 675: ** HT_RETRY if service isn't available before
676: ** request->retry_after
1.2 timbl 677: */
1.52 frystyk 678: PUBLIC int HTLoad ARGS2(HTRequest *, request, BOOL, keep_error_stack)
1.2 timbl 679: {
1.25 frystyk 680: char *arg = NULL;
681: HTProtocol *p;
682: int status;
683:
1.22 luotonen 684: if (request->method == METHOD_INVALID)
685: request->method = METHOD_GET;
1.52 frystyk 686: if (!keep_error_stack) {
687: HTErrorFree(request);
688: request->error_block = NO;
689: }
690:
1.59 frystyk 691: if ((status = get_physical(request)) < 0) {
692: if (status == HT_FORBIDDEN) {
693: char *url = HTAnchor_address((HTAnchor *) request->anchor);
694: if (url) {
695: HTUnEscape(url);
696: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
697: (void *) url, (int) strlen(url), "HTLoad");
698: free(url);
699: } else {
700: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
701: NULL, 0, "HTLoad");
702: }
703: }
704: return HT_ERROR; /* Can't resolve or forbidden */
1.2 timbl 705: }
1.25 frystyk 706:
707: if(!(arg = HTAnchor_physical(request->anchor)) || !*arg)
1.59 frystyk 708: return HT_ERROR;
1.27 luotonen 709:
1.56 frystyk 710: p = (HTProtocol *) HTAnchor_protocol(request->anchor);
1.17 timbl 711: return (*(p->load))(request);
1.2 timbl 712: }
713:
714:
1.61 frystyk 715: /* Terminate a LOAD
716: ** ----------------
717: **
718: ** This function looks at the status code from the HTLoadDocument
719: ** function and updates logfiles, creates error messages etc.
720: **
721: ** On Entry,
722: ** Status code from load function
723: */
724: PUBLIC BOOL HTLoadTerminate ARGS2(HTRequest *, request, int, status)
725: {
726: char * uri = HTAnchor_address((HTAnchor*)request->anchor);
727:
1.70 frystyk 728: HTLog_request(request);
1.61 frystyk 729:
730: /* The error stack might contain general information to the client
731: about what has been going on in the library (not only errors) */
732: if (!HTImProxy && request->error_stack)
733: HTErrorMsg(request);
734:
735: switch (status) {
736: case HT_LOADED:
737: if (PROT_TRACE) {
1.72 frystyk 738: fprintf(TDEST, "HTAccess.... OK: `%s\' has been accessed.\n", uri);
1.61 frystyk 739: }
740: break;
741:
1.78 ! frystyk 742: case HT_OK:
! 743: if (PROT_TRACE) {
! 744: fprintf(TDEST,"HTAccess.... SOURCE FINISHED LOADING: `%s\'\n",uri);
! 745: }
! 746: break;
! 747:
1.61 frystyk 748: case HT_NO_DATA:
749: if (PROT_TRACE) {
1.72 frystyk 750: fprintf(TDEST, "HTAccess.... OK BUT NO DATA: `%s\'\n", uri);
1.61 frystyk 751: }
752: break;
753:
754: case HT_WOULD_BLOCK:
755: if (PROT_TRACE) {
1.72 frystyk 756: fprintf(TDEST, "HTAccess.... WOULD BLOCK: `%s\'\n", uri);
757: }
758: break;
759:
760: case HT_RETRY:
761: if (PROT_TRACE) {
762: fprintf(TDEST, "HTAccess.... NOT AVAILABLE, RETRY AT `%s\'\n",uri);
1.61 frystyk 763: }
764: break;
765:
766: case HT_ERROR:
767: if (HTImProxy)
768: HTErrorMsg(request); /* Only on a real error */
769: if (PROT_TRACE) {
1.72 frystyk 770: fprintf(TDEST, "HTAccess.... ERROR: Can't access `%s\'\n", uri);
1.61 frystyk 771: }
772: break;
773:
774: default:
775: if (PROT_TRACE) {
1.67 frystyk 776: fprintf(TDEST, "HTAccess.... **** Internal software error in CERN WWWLib version %s ****\n", HTLibraryVersion);
777: fprintf(TDEST, "............ Please mail libwww@info.cern.ch quoting what software\n");
778: fprintf(TDEST, "............ and version you are using including the URL:\n");
779: fprintf(TDEST, "............ `%s\'\n", uri);
780: fprintf(TDEST, "............ that caused the problem, thanks!\n");
1.61 frystyk 781: }
782: break;
783: }
784: free(uri);
785: return YES;
786: }
787:
788:
1.2 timbl 789: /* Load a document - with logging etc
790: ** ----------------------------------
791: **
792: ** - Checks or documents already loaded
793: ** - Logs the access
794: ** - Trace ouput and error messages
795: **
1.1 timbl 796: ** On Entry,
1.19 timbl 797: ** request->anchor valid for of the document to be accessed.
798: ** request->childAnchor optional anchor within doc to be selected
799: **
1.15 timbl 800: ** request->anchor is the node_anchor for the document
801: ** request->output_format is valid
802: **
1.59 frystyk 803: ** On exit,
804: ** returns HT_WOULD_BLOCK An I/O operation would block
805: ** HT_ERROR Error has occured
806: ** HT_LOADED Success
807: ** HT_NO_DATA Success, but no document loaded.
808: ** (telnet sesssion started etc)
1.72 frystyk 809: ** HT_RETRY if service isn't available before
810: ** request->retry_after
1.1 timbl 811: */
1.59 frystyk 812: PRIVATE int HTLoadDocument ARGS2(HTRequest *, request,
813: BOOL, keep_error_stack)
1.1 timbl 814:
815: {
816: int status;
817: HText * text;
1.19 timbl 818: char * full_address = HTAnchor_address((HTAnchor*)request->anchor);
1.54 frystyk 819:
1.67 frystyk 820: if (PROT_TRACE) fprintf (TDEST, "HTAccess.... Loading document %s\n",
1.59 frystyk 821: full_address);
1.1 timbl 822:
1.18 timbl 823: request->using_cache = NULL;
824:
1.15 timbl 825: if (!request->output_format) request->output_format = WWW_PRESENT;
1.25 frystyk 826:
1.67 frystyk 827: /* Check if document is already loaded or in cache */
1.70 frystyk 828: if (!request->ForceReload) {
1.67 frystyk 829: if ((text=(HText *)HTAnchor_document(request->anchor))) {
830: if (PROT_TRACE)
831: fprintf(TDEST, "HTAccess.... Document already in memory.\n");
832: if (request->childAnchor) {
833: HText_selectAnchor(text, request->childAnchor);
834: } else {
835: HText_select(text);
836: }
837: free(full_address);
838: return HT_LOADED;
1.19 timbl 839: }
1.67 frystyk 840:
841: /* Check the Cache */
842: /* Bug: for each format, we only check whether it is ok, we
843: don't check them all and chose the best */
844: if (request->anchor->cacheItems) {
845: HTList * list = request->anchor->cacheItems;
846: HTList * cur = list;
847: HTCacheItem * item;
848: while ((item = (HTCacheItem*)HTList_nextObject(cur))) {
849: HTStream * s;
850: request->using_cache = item;
851: s = HTStreamStack(item->format, request->output_format,
852: request->output_stream, request, NO);
853: if (s) { /* format was suitable */
854: FILE * fp = fopen(item->filename, "r");
855: if (PROT_TRACE)
1.70 frystyk 856: fprintf(TDEST, "Cache....... HIT file %s for %s\n",
1.67 frystyk 857: item->filename,
858: full_address);
859: if (fp) {
860: HTFileCopy(fp, s);
861: (*s->isa->_free)(s); /* close up pipeline */
862: fclose(fp);
863: free(full_address);
864: return HT_LOADED;
865: } else {
866: fprintf(TDEST, "***** Can't read cache file %s !\n",
867: item->filename);
868: } /* file open ok */
869: } /* stream ok */
870: } /* next cache item */
871: } /* if cache available for this anchor */
1.70 frystyk 872: } else { /* Make sure that we don't use old headers */
873: HTAnchor_clearHeader(request->anchor);
1.77 frystyk 874: request->RequestMask += HT_PRAGMA; /* Force reload through proxy */
1.1 timbl 875: }
1.61 frystyk 876: if ((status = HTLoad(request, keep_error_stack)) != HT_WOULD_BLOCK)
877: HTLoadTerminate(request, status);
1.19 timbl 878: free(full_address);
1.59 frystyk 879: return status;
1.58 frystyk 880: }
1.1 timbl 881:
882:
883: /* Load a document from absolute name
884: ** ---------------
885: **
1.59 frystyk 886: ** On Entry,
1.1 timbl 887: ** addr The absolute address of the document to be accessed.
888: **
1.59 frystyk 889: ** On exit,
890: ** returns HT_WOULD_BLOCK An I/O operation would block
891: ** HT_ERROR Error has occured
892: ** HT_LOADED Success
893: ** HT_NO_DATA Success, but no document loaded.
894: ** (telnet sesssion started etc)
1.72 frystyk 895: ** HT_RETRY if service isn't available before
896: ** request->retry_after
1.1 timbl 897: */
1.59 frystyk 898: PUBLIC int HTLoadAbsolute ARGS2(CONST char *,addr, HTRequest*, request)
1.2 timbl 899: {
1.19 timbl 900: HTAnchor * anchor = HTAnchor_findAddress(addr);
901: request->anchor = HTAnchor_parent(anchor);
902: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ?
903: NULL : (HTChildAnchor*) anchor;
1.52 frystyk 904: return HTLoadDocument(request, NO);
1.2 timbl 905: }
906:
907:
908: /* Load a document from absolute name to stream
909: ** --------------------------------------------
910: **
1.59 frystyk 911: ** On Entry,
1.2 timbl 912: ** addr The absolute address of the document to be accessed.
1.15 timbl 913: ** request->output_stream if non-NULL, send data down this stream
1.2 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)
1.72 frystyk 921: ** HT_RETRY if service isn't available before
922: ** request->retry_after
1.2 timbl 923: */
1.59 frystyk 924: PUBLIC int HTLoadToStream ARGS3(CONST char *, addr,
925: BOOL, filter,
926: HTRequest*, request)
1.1 timbl 927: {
1.63 frystyk 928: HTAnchor * anchor = HTAnchor_findAddress(addr);
929: request->anchor = HTAnchor_parent(anchor);
930: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ? NULL :
1.19 timbl 931: (HTChildAnchor*) anchor;
1.15 timbl 932: request->output_stream = request->output_stream;
1.52 frystyk 933: return HTLoadDocument(request, NO);
1.1 timbl 934: }
935:
936:
937: /* Load a document from relative name
938: ** ---------------
939: **
1.59 frystyk 940: ** On Entry,
1.2 timbl 941: ** relative_name The relative address of the document
942: ** to be accessed.
1.1 timbl 943: **
1.59 frystyk 944: ** On exit,
945: ** returns HT_WOULD_BLOCK An I/O operation would block
946: ** HT_ERROR Error has occured
947: ** HT_LOADED Success
948: ** HT_NO_DATA Success, but no document loaded.
949: ** (telnet sesssion started etc)
1.72 frystyk 950: ** HT_RETRY if service isn't available before
951: ** request->retry_after
1.1 timbl 952: */
1.59 frystyk 953: PUBLIC int HTLoadRelative ARGS3(CONST char *, relative_name,
954: HTParentAnchor *, here,
955: HTRequest *, request)
1.1 timbl 956: {
957: char * full_address = 0;
1.65 frystyk 958: int result;
1.1 timbl 959: char * mycopy = 0;
960: char * stripped = 0;
961: char * current_address =
1.2 timbl 962: HTAnchor_address((HTAnchor*)here);
1.1 timbl 963:
964: StrAllocCopy(mycopy, relative_name);
965:
966: stripped = HTStrip(mycopy);
967: full_address = HTParse(stripped,
968: current_address,
969: PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
1.15 timbl 970: result = HTLoadAbsolute(full_address, request);
1.1 timbl 971: free(full_address);
972: free(current_address);
973: free(mycopy); /* Memory leak fixed 10/7/92 -- JFG */
974: return result;
975: }
976:
977:
978: /* Load if necessary, and select an anchor
979: ** --------------------------------------
980: **
1.59 frystyk 981: ** On Entry,
1.1 timbl 982: ** destination The child or parenet anchor to be loaded.
983: **
1.59 frystyk 984: ** On exit,
985: ** returns HT_WOULD_BLOCK An I/O operation would block
986: ** HT_ERROR Error has occured
987: ** HT_LOADED Success
988: ** HT_NO_DATA Success, but no document loaded.
989: ** (telnet sesssion started etc)
1.72 frystyk 990: ** HT_RETRY if service isn't available before
991: ** request->retry_after
1.1 timbl 992: */
1.59 frystyk 993: PUBLIC int HTLoadAnchor ARGS2(HTAnchor*, anchor, HTRequest *, request)
1.1 timbl 994: {
1.70 frystyk 995: if (!anchor || !request)
996: return HT_ERROR;
997: request->anchor = HTAnchor_parent(anchor);
1.59 frystyk 998: request->childAnchor = ((HTAnchor *) request->anchor == anchor) ?
999: NULL : (HTChildAnchor*) anchor;
1000: return HTLoadDocument(request, NO);
1001: }
1.52 frystyk 1002:
1003:
1004: /* Load if necessary, and select an anchor
1005: ** --------------------------------------
1006: **
1007: ** This function is almost identical to HTLoadAnchor, but it doesn't
1008: ** clear the error stack so that the information in there is kept.
1009: **
1.59 frystyk 1010: ** On Entry,
1.52 frystyk 1011: ** destination The child or parenet anchor to be loaded.
1012: **
1.59 frystyk 1013: ** On exit,
1014: ** returns HT_WOULD_BLOCK An I/O operation would block
1015: ** HT_ERROR Error has occured
1016: ** HT_LOADED Success
1017: ** HT_NO_DATA Success, but no document loaded.
1018: ** (telnet sesssion started etc)
1.72 frystyk 1019: ** HT_RETRY if service isn't available before
1020: ** request->retry_after
1.52 frystyk 1021: */
1.59 frystyk 1022: PUBLIC int HTLoadAnchorRecursive ARGS2(HTAnchor*, anchor,
1023: HTRequest *, request)
1.52 frystyk 1024: {
1.59 frystyk 1025: if (!anchor) return HT_ERROR; /* No link */
1.52 frystyk 1026:
1027: request->anchor = HTAnchor_parent(anchor);
1.59 frystyk 1028: request->childAnchor = ((HTAnchor *) request->anchor == anchor) ?
1029: NULL : (HTChildAnchor*) anchor;
1.52 frystyk 1030:
1.59 frystyk 1031: return HTLoadDocument(request, YES);
1032: }
1.1 timbl 1033:
1034:
1035: /* Search
1036: ** ------
1037: ** Performs a keyword search on word given by the user. Adds the keyword to
1038: ** the end of the current address and attempts to open the new address.
1039: **
1040: ** On Entry,
1041: ** *keywords space-separated keyword list or similar search list
1.2 timbl 1042: ** here is anchor search is to be done on.
1.59 frystyk 1043: **
1044: ** On exit,
1045: ** returns HT_WOULD_BLOCK An I/O operation would block
1046: ** HT_ERROR Error has occured
1047: ** HT_LOADED Success
1048: ** HT_NO_DATA Success, but no document loaded.
1049: ** (telnet sesssion started etc)
1.72 frystyk 1050: ** HT_RETRY if service isn't available before
1051: ** request->retry_after
1.1 timbl 1052: */
1.56 frystyk 1053: PRIVATE char hex ARGS1(int, i)
1.2 timbl 1054: {
1.13 timbl 1055: char * hexchars = "0123456789ABCDEF";
1056: return hexchars[i];
1.2 timbl 1057: }
1.1 timbl 1058:
1.59 frystyk 1059: PUBLIC int HTSearch ARGS3(CONST char *, keywords,
1060: HTParentAnchor *, here,
1061: HTRequest *, request)
1.1 timbl 1062: {
1.2 timbl 1063:
1064: #define acceptable \
1065: "1234567890abcdefghijlkmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_"
1066:
1067: char *q, *u;
1068: CONST char * p, *s, *e; /* Pointers into keywords */
1069: char * address = HTAnchor_address((HTAnchor*)here);
1.65 frystyk 1070: int result;
1.56 frystyk 1071: char * escaped = (char *) malloc(strlen(keywords)*3+1);
1.2 timbl 1072:
1.29 frystyk 1073: /* static CONST BOOL isAcceptable[96] = */
1074: /* static AND const is not good for a gnu compiler! Frystyk 25/02-94 */
1.30 luotonen 1075: static BOOL isAcceptable[96] =
1.2 timbl 1076: /* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
1077: { 0,0,0,0,0,0,0,0,0,0,1,0,0,1,1,0, /* 2x !"#$%&'()*+,-./ */
1078: 1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0, /* 3x 0123456789:;<=>? */
1079: 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 4x @ABCDEFGHIJKLMNO */
1080: 1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,1, /* 5X PQRSTUVWXYZ[\]^_ */
1081: 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 6x `abcdefghijklmno */
1082: 1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0 }; /* 7X pqrstuvwxyz{\}~ DEL */
1083:
1084: if (escaped == NULL) outofmem(__FILE__, "HTSearch");
1085:
1.29 frystyk 1086: /* Convert spaces to + and hex escape unacceptable characters */
1.2 timbl 1087:
1.29 frystyk 1088: for(s=keywords; *s && WHITE(*s); s++); /*scan */ /* Skip white space */
1089: for(e = s + strlen(s); e>s && WHITE(*(e-1)) ; e--); /* Skip trailers */
1090: for(q=escaped, p=s; p<e; p++) { /* scan stripped field */
1.2 timbl 1091: int c = (int)TOASCII(*p);
1092: if (WHITE(*p)) {
1093: *q++ = '+';
1.29 frystyk 1094: } else if (c>=32 && c<=127 && isAcceptable[c-32] != 0) {
1.13 timbl 1095: *q++ = *p; /* 930706 TBL for MVS bug */
1.2 timbl 1096: } else {
1097: *q++ = '%';
1098: *q++ = hex(c / 16);
1099: *q++ = hex(c % 16);
1100: }
1101: } /* Loop over string */
1.1 timbl 1102:
1.2 timbl 1103: *q=0;
1104: /* terminate escaped sctring */
1105: u=strchr(address, '?'); /* Find old search string */
1106: if (u) *u = 0; /* Chop old search off */
1.1 timbl 1107:
1108: StrAllocCat(address, "?");
1.2 timbl 1109: StrAllocCat(address, escaped);
1110: free(escaped);
1.15 timbl 1111: result = HTLoadRelative(address, here, request);
1.1 timbl 1112: free(address);
1.2 timbl 1113:
1.1 timbl 1114: return result;
1.2 timbl 1115: }
1116:
1117:
1118: /* Search Given Indexname
1119: ** ------
1120: ** Performs a keyword search on word given by the user. Adds the keyword to
1121: ** the end of the current address and attempts to open the new address.
1122: **
1.59 frystyk 1123: ** On Entry,
1.2 timbl 1124: ** *keywords space-separated keyword list or similar search list
1125: ** *addres is name of object search is to be done on.
1.59 frystyk 1126: ** On exit,
1127: ** returns HT_WOULD_BLOCK An I/O operation would block
1128: ** HT_ERROR Error has occured
1129: ** HT_LOADED Success
1130: ** HT_NO_DATA Success, but no document loaded.
1131: ** (telnet sesssion started etc)
1.72 frystyk 1132: ** HT_RETRY if service isn't available before
1133: ** request->retry_after
1.2 timbl 1134: */
1.59 frystyk 1135: PUBLIC int HTSearchAbsolute ARGS3(CONST char *, keywords,
1136: CONST char *, indexname,
1137: HTRequest *, request)
1.2 timbl 1138: {
1139: HTParentAnchor * anchor =
1140: (HTParentAnchor*) HTAnchor_findAddress(indexname);
1.15 timbl 1141: return HTSearch(keywords, anchor, request);
1.57 howcome 1142: }
1143:
1.70 frystyk 1144: /* --------------------------------------------------------------------------*/
1145: /* Document Poster */
1146: /* --------------------------------------------------------------------------*/
1147:
1148: /* Get a save stream for a document
1149: ** --------------------------------
1150: */
1151: PUBLIC HTStream *HTSaveStream ARGS1(HTRequest *, request)
1152: {
1153: HTProtocol * p;
1154: int status;
1155: request->method = METHOD_PUT;
1156: status = get_physical(request);
1157: if (status == HT_FORBIDDEN) {
1158: char *url = HTAnchor_address((HTAnchor *) request->anchor);
1159: if (url) {
1160: HTUnEscape(url);
1161: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1162: (void *) url, (int) strlen(url), "HTLoad");
1163: free(url);
1164: } else {
1165: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1166: NULL, 0, "HTLoad");
1167: }
1168: return NULL; /* should return error status? */
1169: }
1170: if (status < 0) return NULL; /* @@ error. Can't resolve or forbidden */
1171:
1172: p = (HTProtocol *) HTAnchor_protocol(request->anchor);
1173: if (!p) return NULL;
1174:
1175: return (*p->saveStream)(request);
1176:
1177: }
1178:
1179: /* COPY AN ANCHOR
1180: ** --------------
1181: ** Fetch the URL (possibly local file URL) and send it using either PUT
1182: ** or POST to the remote destination using HTTP. The caller can decide the
1183: ** exact method used and which HTTP header fields to transmit by setting the
1184: ** user fields in the request structure.
1185: **
1186: ** returns HT_WOULD_BLOCK An I/O operation would block
1187: ** HT_ERROR Error has occured
1188: ** HT_LOADED Success
1189: ** HT_NO_DATA Success, but no document loaded.
1.72 frystyk 1190: ** HT_RETRY if service isn't available before
1191: ** request->retry_after
1.70 frystyk 1192: */
1.78 ! frystyk 1193: PUBLIC int HTCopyAnchor ARGS3(HTAnchor *, src_anchor,
1.70 frystyk 1194: HTParentAnchor *, dest_anchor,
1195: HTRequest *, dest_req)
1196: {
1.78 ! frystyk 1197: HTRequest *src_req;
! 1198: if (!(src_anchor && dest_anchor && dest_req))
1.70 frystyk 1199: return HT_ERROR;
1200:
1201: if (!(dest_anchor->methods & dest_req->method)) {
1202: char buf[80];
1203: sprintf(buf, "It might not be allowed to %s to this destination, continue?", HTMethod_name(dest_req->method));
1204: if (!HTConfirm(buf))
1205: return HT_ERROR;
1206: }
1207:
1.78 ! frystyk 1208: /* Get an internal HTRequest structure to handle the source part */
! 1209: src_req = HTRequest_new();
! 1210: HTAnchor_clearHeader((HTParentAnchor *) src_anchor);
! 1211: src_req->ForceReload = YES;
! 1212:
! 1213: /* Mark the source request so that there only is one HTThreadTerminate()
! 1214: function call handling the outcome of the destination request */
! 1215: src_req->Source = YES;
! 1216:
! 1217: /* Use SOURCE but at some point we can introduce format conversion here! */
! 1218: src_req->output_format = WWW_SOURCE;
! 1219:
! 1220: #ifdef NO_UNIX_IO
! 1221: {
! 1222: char * addr = HTAnchor_address((HTAnchor *) src_anchor);
! 1223: char *access = HTParse(addr, "", PARSE_ACCESS);
! 1224: if (*access && !strcmp(access, "file"))
! 1225: dest_req->BlockingIO = YES;
! 1226: free(addr);
! 1227: free(access);
! 1228: }
! 1229: #endif
! 1230:
! 1231: dest_req->GenMask += HT_DATE; /* Send date header */
! 1232: dest_req->CopyRequest = src_req;
! 1233:
1.70 frystyk 1234: /* First open the destination then open the source */
1235: if (HTLoadAnchor((HTAnchor *) dest_anchor, dest_req) != HT_ERROR) {
1.78 ! frystyk 1236: int status;
! 1237: /*
! 1238: ** Now make the link between the two request structures. First setup
! 1239: ** the output stream of the source so that data get redirected to
! 1240: ** the destination. Then set up the call back function so that
! 1241: ** the destination can call for more data
! 1242: */
1.70 frystyk 1243: src_req->output_stream = dest_req->input_stream;
1244: dest_req->PostCallBack = HTSocketRead;
1.78 ! frystyk 1245: if ((status = HTLoadAnchor(src_anchor, src_req)) != HT_LOADED)
! 1246: return status;
1.70 frystyk 1247: }
1248: return HT_ERROR;
1249: }
1250:
1251:
1252: /* UPLOAD AN ANCHOR
1253: ** ----------------
1254: ** Send the contents (in hyperdoc) of the source anchor using either PUT
1255: ** or POST to the remote destination using HTTP. The caller can decide the
1256: ** exact method used and which HTTP header fields to transmit by setting the
1257: ** user fields in the request structure.
1258: **
1259: ** returns HT_WOULD_BLOCK An I/O operation would block
1260: ** HT_ERROR Error has occured
1261: ** HT_LOADED Success
1262: ** HT_NO_DATA Success, but no document loaded.
1.72 frystyk 1263: ** HT_RETRY if service isn't available before
1264: ** request->retry_after
1.70 frystyk 1265: */
1266: PUBLIC int HTUploadAnchor ARGS3(HTAnchor *, src_anchor,
1267: HTParentAnchor *, dest_anchor,
1268: HTRequest *, dest_req)
1269: {
1270: if (!(src_anchor && dest_anchor && dest_req))
1271: return HT_ERROR;
1272:
1273: if (!(dest_anchor->methods & dest_req->method)) {
1274: char buf[80];
1275: sprintf(buf, "It might not be allowed to %s to this destination, continue?", HTMethod_name(dest_req->method));
1276: if (!HTConfirm(buf))
1277: return HT_ERROR;
1278: }
1.77 frystyk 1279:
1280: /* @@@ NOT FINISHED @@@ */
1.70 frystyk 1281:
1282: return HT_ERROR;
1283: }
1284:
1285: /* --------------------------------------------------------------------------*/
1286: /* Anchor help routines */
1287: /* --------------------------------------------------------------------------*/
1.57 howcome 1288:
1289: /*
1290: ** Find Related Name
1291: **
1292: ** Creates a string that can be used as a related name when
1293: ** calling HTParse initially.
1294: **
1295: ** The code for this routine originates from the Linemode
1296: ** browser and was moved here by howcome@dxcern.cern.ch
1297: ** in order for all clients to take advantage.
1298: **
1.59 frystyk 1299: ** The string returned must be freed by the caller
1.57 howcome 1300: */
1301: PUBLIC char * HTFindRelatedName NOARGS
1302: {
1.59 frystyk 1303: char* default_default = NULL; /* Parse home relative to this */
1304: CONST char *host = HTGetHostName();
1.57 howcome 1305: StrAllocCopy(default_default, "file://");
1.59 frystyk 1306: if (host)
1307: StrAllocCat(default_default, host);
1308: else
1309: StrAllocCat(default_default, "localhost");
1310: {
1311: char wd[HT_MAX_PATH+1];
1.67 frystyk 1312:
1313: #ifdef NO_GETWD
1314: #ifdef HAS_GETCWD /* System V variant SIGN CHANGED TBL 921006 !! */
1315: char *result = (char *) getcwd(wd, sizeof(wd));
1316: #else
1317: char *result = NULL;
1318: HTAlert("This platform does not support neither getwd nor getcwd\n");
1319: #endif
1320: #else
1321: char *result = (char *) getwd(wd);
1322: #endif
1.59 frystyk 1323: *(wd+HT_MAX_PATH) = '\0';
1.57 howcome 1324: if (result) {
1325: #ifdef VMS
1326: /* convert directory name to Unix-style syntax */
1327: char * disk = strchr (wd, ':');
1328: char * dir = strchr (wd, '[');
1329: if (disk) {
1330: *disk = '\0';
1331: StrAllocCat (default_default, "/"); /* needs delimiter */
1332: StrAllocCat (default_default, wd);
1333: }
1334: if (dir) {
1335: char *p;
1336: *dir = '/'; /* Convert leading '[' */
1337: for (p = dir ; *p != ']'; ++p)
1338: if (*p == '.') *p = '/';
1339: *p = '\0'; /* Cut on final ']' */
1340: StrAllocCat (default_default, dir);
1341: }
1.74 frystyk 1342: #else /* not VMS */
1.70 frystyk 1343: #ifdef WIN32
1344: char * p = wd ; /* a colon */
1345: StrAllocCat(default_default, "/");
1346: while( *p != 0 ) {
1347: if (*p == '\\') /* change to one true slash */
1348: *p = '/' ;
1349: p++;
1350: }
1.74 frystyk 1351: StrAllocCat( default_default, wd);
1352: #else /* not WIN32 */
1.57 howcome 1353: StrAllocCat (default_default, wd);
1.70 frystyk 1354: #endif /* not WIN32 */
1.67 frystyk 1355: #endif /* not VMS */
1.57 howcome 1356: }
1.67 frystyk 1357: }
1.57 howcome 1358: StrAllocCat(default_default, "/default.html");
1359: return default_default;
1.2 timbl 1360: }
1361:
1362:
1363: /* Generate the anchor for the home page
1364: ** -------------------------------------
1365: **
1366: ** As it involves file access, this should only be done once
1367: ** when the program first runs.
1.10 timbl 1368: ** This is a default algorithm -- browser don't HAVE to use this.
1369: ** But consistency betwen browsers is STRONGLY recommended!
1.2 timbl 1370: **
1.10 timbl 1371: ** Priority order is:
1372: **
1373: ** 1 WWW_HOME environment variable (logical name, etc)
1374: ** 2 ~/WWW/default.html
1375: ** 3 /usr/local/bin/default.html
1.70 frystyk 1376: ** 4 http://www.w3.org/default.html
1.10 timbl 1377: **
1.2 timbl 1378: */
1379: PUBLIC HTParentAnchor * HTHomeAnchor NOARGS
1380: {
1.12 timbl 1381: char * my_home_document = NULL;
1.70 frystyk 1382: char * home = (char *) getenv(LOGICAL_DEFAULT);
1.2 timbl 1383: char * ref;
1384: HTParentAnchor * anchor;
1.1 timbl 1385:
1.70 frystyk 1386: /* Someone telnets in, they get a special home */
1.12 timbl 1387: if (home) {
1388: StrAllocCopy(my_home_document, home);
1.70 frystyk 1389: } else if (HTClientHost) { /* Telnet server */
1.12 timbl 1390: FILE * fp = fopen(REMOTE_POINTER, "r");
1391: char * status;
1392: if (fp) {
1.59 frystyk 1393: my_home_document = (char*) malloc(HT_MAX_PATH);
1394: status = fgets(my_home_document, HT_MAX_PATH, fp);
1.12 timbl 1395: if (!status) {
1396: free(my_home_document);
1397: my_home_document = NULL;
1398: }
1399: fclose(fp);
1400: }
1401: if (!my_home_document) StrAllocCopy(my_home_document, REMOTE_ADDRESS);
1402: }
1403:
1.67 frystyk 1404: #ifdef unix
1.10 timbl 1405: if (!my_home_document) {
1406: FILE * fp = NULL;
1.70 frystyk 1407: char * home = (char *) getenv("HOME");
1.10 timbl 1408: if (home) {
1409: my_home_document = (char *)malloc(
1410: strlen(home)+1+ strlen(PERSONAL_DEFAULT)+1);
1411: if (my_home_document == NULL) outofmem(__FILE__, "HTLocalName");
1412: sprintf(my_home_document, "%s/%s", home, PERSONAL_DEFAULT);
1413: fp = fopen(my_home_document, "r");
1414: }
1415:
1416: if (!fp) {
1417: StrAllocCopy(my_home_document, LOCAL_DEFAULT_FILE);
1418: fp = fopen(my_home_document, "r");
1419: }
1.2 timbl 1420: if (fp) {
1421: fclose(fp);
1422: } else {
1.62 frystyk 1423: if (TRACE)
1.67 frystyk 1424: fprintf(TDEST,
1.62 frystyk 1425: "HTBrowse: No local home document ~/%s or %s\n",
1426: PERSONAL_DEFAULT, LOCAL_DEFAULT_FILE);
1.11 timbl 1427: free(my_home_document);
1428: my_home_document = NULL;
1.2 timbl 1429: }
1430: }
1.67 frystyk 1431: #endif
1.70 frystyk 1432: ref = HTParse(my_home_document ? my_home_document :
1433: HTClientHost ? REMOTE_ADDRESS : LAST_RESORT, "file:",
1434: PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
1.10 timbl 1435: if (my_home_document) {
1.62 frystyk 1436: if (TRACE)
1.67 frystyk 1437: fprintf(TDEST,
1.62 frystyk 1438: "HTAccess.... `%s\' used for custom home page as\n`%s\'\n",
1439: my_home_document, ref);
1.10 timbl 1440: free(my_home_document);
1.2 timbl 1441: }
1442: anchor = (HTParentAnchor*) HTAnchor_findAddress(ref);
1443: free(ref);
1444: return anchor;
1.1 timbl 1445: }
1.26 frystyk 1446:
1447:
1448: /* Bind an Anchor to the request structure
1449: ** ---------------------------------------
1450: **
1451: ** On Entry,
1452: ** anchor The child or parenet anchor to be binded
1453: ** request The request sturcture
1454: ** On Exit,
1455: ** returns YES Success
1456: ** NO Failure
1457: **
1458: ** Note: Actually the same as HTLoadAnchor() but DOES NOT do the loading
1459: ** Henrik Frystyk 17/02-94
1460: */
1461:
1462: PUBLIC BOOL HTBindAnchor ARGS2(HTAnchor*, anchor, HTRequest *, request)
1463: {
1464: if (!anchor) return NO; /* No link */
1465:
1466: request->anchor = HTAnchor_parent(anchor);
1467: request->childAnchor = ((HTAnchor*)request->anchor == anchor) ? NULL
1468: : (HTChildAnchor*) anchor;
1469:
1.29 frystyk 1470: return YES;
1.70 frystyk 1471: }
1.59 frystyk 1472:
1.26 frystyk 1473:
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