Annotation of Amaya/amaya/AHTURLTools.c, revision 1.69
1.7 cvs 1: /*
2: *
3: * (c) COPYRIGHT MIT and INRIA, 1996.
4: * Please first read the full copyright statement in file COPYRIGHT.
5: *
6: */
1.9 cvs 7:
1.10 cvs 8: /*
9: * AHTURLTools.c: contains all the functions for testing, manipulating,
1.25 cvs 10: * and normalizing URLs. It also contains a local copy of the libWWW
11: * URL parsing functions.
1.10 cvs 12: *
13: * Authors: J. Kahan, I. Vatton
1.45 cvs 14: * R. Guetari (Stuff related to Windows).
1.10 cvs 15: *
16: */
1.7 cvs 17:
1.15 cvs 18: #define THOT_EXPORT extern
1.3 cvs 19: #include "amaya.h"
20:
1.8 cvs 21: #include "init_f.h"
22: #include "AHTURLTools_f.h"
23:
1.24 cvs 24: #define MAX_PRINT_URL_LENGTH 50
1.29 cvs 25: typedef struct _HTURI {
1.67 cvs 26: STRING access; /* Now known as "scheme" */
27: STRING host;
28: STRING absolute;
29: STRING relative;
30: STRING fragment;
1.29 cvs 31: } HTURI;
1.24 cvs 32:
1.28 cvs 33:
34: /*----------------------------------------------------------------------
35: ConvertToLowerCase
36: Converts a string to lowercase.
37: ----------------------------------------------------------------------*/
1.22 cvs 38: #ifdef __STDC__
1.67 cvs 39: void ConvertToLowerCase (STRING string)
1.28 cvs 40: #else /* __STDC__ */
1.38 cvs 41: void ConvertToLowerCase (string)
1.67 cvs 42: STRING string;
1.28 cvs 43:
44: #endif /* __STDC__ */
45: {
46: int i;
47:
48: if (!string)
49: return;
50:
51: for (i = 0; string[i] != EOS; i++)
1.67 cvs 52: string[i] = utolower (string[i]);
1.28 cvs 53: }
1.22 cvs 54:
1.8 cvs 55: /*----------------------------------------------------------------------
1.11 cvs 56: ExplodeURL
1.8 cvs 57: ----------------------------------------------------------------------*/
58: #ifdef __STDC__
59: void ExplodeURL (char *url, char **proto, char **host, char **dir, char **file)
60: #else
61: void ExplodeURL (url, proto, host, dir, file)
62: char *url;
63: char **proto;
64: char **host;
65: char **dir;
66: char **file;
67:
68: #endif
69: {
1.33 cvs 70: char *curr, *temp;
71: char used_sep;
1.32 cvs 72:
1.33 cvs 73: if (url && strchr (url, URL_SEP))
74: used_sep = URL_SEP;
75: else
76: used_sep = DIR_SEP;
1.8 cvs 77:
78: if ((url == NULL) || (proto == NULL) || (host == NULL) ||
79: (dir == NULL) || (file == NULL))
80: return;
81:
82: /* initialize every pointer */
83: *proto = *host = *dir = *file = NULL;
84:
85: /* skip any leading space */
86: while ((*url == SPACE) || (*url == TAB))
87: url++;
1.9 cvs 88: curr = url;
89: if (*curr == 0)
1.8 cvs 90: goto finished;
91:
92: /* go to the end of the URL */
1.68 cvs 93: while ((*curr != EOS) && (*curr != SPACE) && (*curr != BSPACE) &&
94: (*curr != __CR__) && (*curr != EOL))
1.9 cvs 95: curr++;
1.8 cvs 96:
97: /* mark the end of the chain */
1.9 cvs 98: *curr = EOS;
99: curr--;
100: if (curr <= url)
1.8 cvs 101: goto finished;
102:
103: /* search the next DIR_SEP indicating the beginning of the file name */
104: do
1.11 cvs 105: curr--;
1.33 cvs 106: while ((curr >= url) && (*curr != used_sep));
1.11 cvs 107:
1.9 cvs 108: if (curr < url)
1.8 cvs 109: goto finished;
1.9 cvs 110: *file = curr + 1;
1.8 cvs 111:
112: /* mark the end of the dir */
1.9 cvs 113: *curr = EOS;
114: curr--;
115: if (curr < url)
1.8 cvs 116: goto finished;
117:
1.29 cvs 118: /* search for the DIR_STR indicating the host name start */
1.33 cvs 119: while ((curr > url) && ((*curr != used_sep) || (*(curr + 1) != used_sep)))
1.9 cvs 120: curr--;
1.8 cvs 121:
122: /* if we found it, separate the host name from the directory */
1.33 cvs 123: if ((*curr == DIR_SEP) && (*(curr + 1) == used_sep))
1.8 cvs 124: {
1.9 cvs 125: *host = temp = curr + 2;
1.33 cvs 126: while ((*temp != 0) && (*temp != used_sep))
1.8 cvs 127: temp++;
1.33 cvs 128: if (*temp == used_sep)
1.8 cvs 129: {
130: *temp = EOS;
131: *dir = temp + 1;
132: }
133: }
134: else
1.11 cvs 135: *dir = curr;
136:
1.9 cvs 137: if (curr <= url)
1.8 cvs 138: goto finished;
139:
140: /* mark the end of the proto */
1.9 cvs 141: *curr = EOS;
142: curr--;
143: if (curr < url)
1.8 cvs 144: goto finished;
145:
1.67 cvs 146: if (*curr == TEXT(':'))
1.8 cvs 147: {
1.9 cvs 148: *curr = EOS;
149: curr--;
1.8 cvs 150: }
151: else
152: goto finished;
1.11 cvs 153:
1.9 cvs 154: if (curr < url)
1.8 cvs 155: goto finished;
1.9 cvs 156: while ((curr > url) && (isalpha (*curr)))
157: curr--;
158: *proto = curr;
1.8 cvs 159:
160: finished:;
161:
162: #ifdef AMAYA_DEBUG
163: fprintf (stderr, "ExplodeURL(%s)\n\t", url);
164: if (*proto)
165: fprintf (stderr, "proto : %s, ", *proto);
166: if (*host)
167: fprintf (stderr, "host : %s, ", *host);
168: if (*dir)
169: fprintf (stderr, "dir : %s, ", *dir);
170: if (*file)
171: fprintf (stderr, "file : %s ", *file);
172: fprintf (stderr, "\n");
173: #endif
174:
175: }
1.3 cvs 176:
1.61 cvs 177:
178: /*----------------------------------------------------------------------
179: ExtractSuffix extract suffix from document nane.
180: ----------------------------------------------------------------------*/
181: #ifdef __STDC__
182: void ExtractSuffix (STRING aName, STRING aSuffix)
183: #else
184: void ExtractSuffix (aName, aSuffix)
185: STRING aName;
186: STRING aSuffix;
187:
188: #endif
189: {
190: int lg, i;
191: STRING ptr, oldptr;
192:
193: if (!aSuffix || !aName)
194: /* bad suffix */
195: return;
196:
197: aSuffix[0] = EOS;
198: lg = ustrlen (aName);
199: if (lg)
200: {
201: /* the name is not empty */
202: oldptr = ptr = &aName[0];
203: do
204: {
1.67 cvs 205: ptr = ustrrchr (oldptr, TEXT('.'));
1.61 cvs 206: if (ptr)
207: oldptr = &ptr[1];
208: }
209: while (ptr);
210:
211: i = (int) (oldptr) - (int) (aName); /* name length */
212: if (i > 1)
213: {
214: aName[i - 1] = EOS;
215: if (i != lg)
216: ustrcpy (aSuffix, oldptr);
217: }
218: }
219: }
220:
1.4 cvs 221: /*----------------------------------------------------------------------
1.9 cvs 222: IsHTMLName
223: returns TRUE if path points to an HTML resource.
1.4 cvs 224: ----------------------------------------------------------------------*/
1.3 cvs 225: #ifdef __STDC__
1.67 cvs 226: ThotBool IsHTMLName (const STRING path)
1.3 cvs 227: #else /* __STDC__ */
1.67 cvs 228: ThotBool IsHTMLName (path)
229: const STRING path;
1.3 cvs 230: #endif /* __STDC__ */
231: {
1.67 cvs 232: CHAR_T temppath[MAX_LENGTH];
233: CHAR_T suffix[MAX_LENGTH];
234: CHAR_T nsuffix[MAX_LENGTH];
1.5 cvs 235: int i;
236:
237: if (!path)
1.37 cvs 238: return (FALSE);
1.5 cvs 239:
1.67 cvs 240: ustrcpy (temppath, path);
1.5 cvs 241: ExtractSuffix (temppath, suffix);
242:
243: /* Normalize the suffix */
244: i = 0;
1.39 cvs 245: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 246: {
1.67 cvs 247: nsuffix[i] = utolower (suffix[i]);
1.13 cvs 248: i++;
249: }
1.5 cvs 250: nsuffix[i] = EOS;
1.67 cvs 251: if (!ustrcmp (nsuffix, TEXT("html")) ||
252: !ustrcmp (nsuffix, TEXT("htm")) ||
253: !ustrcmp (nsuffix, TEXT("shtml")) ||
254: !ustrcmp (nsuffix, TEXT("xht")) ||
255: !ustrcmp (nsuffix, TEXT("xhtm")) ||
256: !ustrcmp (nsuffix, TEXT("xhtml")))
1.39 cvs 257: return (TRUE);
1.67 cvs 258: else if (!ustrcmp (nsuffix, TEXT("gz")))
1.13 cvs 259: {
1.39 cvs 260: /* take into account compressed files */
1.13 cvs 261: ExtractSuffix (temppath, suffix);
262: /* Normalize the suffix */
263: i = 0;
1.39 cvs 264: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 265: {
1.25 cvs 266: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 267: i++;
268: }
269: nsuffix[i] = EOS;
1.67 cvs 270: if (!ustrcmp (nsuffix, TEXT("html")) ||
271: !ustrcmp (nsuffix, TEXT("htm")) ||
272: !ustrcmp (nsuffix, TEXT("shtml")) ||
273: !ustrcmp (nsuffix, TEXT("xht")) ||
274: !ustrcmp (nsuffix, TEXT("xhtm")) ||
275: !ustrcmp (nsuffix, TEXT("xhtml")))
1.63 cvs 276:
1.39 cvs 277: return (TRUE);
278: else
1.13 cvs 279: return (FALSE);
280: }
281: else
1.39 cvs 282: return (FALSE);
1.3 cvs 283: }
284:
1.4 cvs 285: /*----------------------------------------------------------------------
1.56 cvs 286: IsXMLName
287: returns TRUE if path points to an XML resource.
288: ----------------------------------------------------------------------*/
289: #ifdef __STDC__
1.67 cvs 290: ThotBool IsXMLName (const STRING path)
1.56 cvs 291: #else /* __STDC__ */
1.67 cvs 292: ThotBool IsXMLName (path)
293: const STRING path;
1.56 cvs 294: #endif /* __STDC__ */
295: {
1.67 cvs 296: CHAR_T temppath[MAX_LENGTH];
297: CHAR_T suffix[MAX_LENGTH];
1.56 cvs 298:
299: if (!path)
300: return (FALSE);
301:
1.67 cvs 302: ustrcpy (temppath, path);
1.56 cvs 303: ExtractSuffix (temppath, suffix);
304:
1.67 cvs 305: if (!ustrcasecmp (suffix, TEXT("xml")) ||
306: !ustrcasecmp (suffix, TEXT("xht")) ||
307: !ustrcmp (suffix, TEXT("xhtm")) ||
308: !ustrcmp (suffix, TEXT("xhtml")))
1.56 cvs 309: return (TRUE);
1.67 cvs 310: else if (!ustrcmp (suffix, TEXT("gz")))
1.56 cvs 311: {
312: /* take into account compressed files */
313: ExtractSuffix (temppath, suffix);
1.67 cvs 314: if (!ustrcasecmp (suffix, TEXT("xml")) ||
315: !ustrcasecmp (suffix, TEXT("xht")) ||
316: !ustrcmp (suffix, TEXT("xhtm")) ||
317: !ustrcmp (suffix, TEXT("xhtml")))
1.60 cvs 318: return (TRUE);
319: else
320: return (FALSE);
321: }
322: else
323: return (FALSE);
324: }
325:
326: /*----------------------------------------------------------------------
327: IsCSSName
328: returns TRUE if path points to an XML resource.
329: ----------------------------------------------------------------------*/
330: #ifdef __STDC__
1.67 cvs 331: ThotBool IsCSSName (const STRING path)
1.60 cvs 332: #else /* __STDC__ */
1.67 cvs 333: ThotBool IsCSSName (path)
334: const STRING path;
1.60 cvs 335: #endif /* __STDC__ */
336: {
1.67 cvs 337: CHAR_T temppath[MAX_LENGTH];
338: CHAR_T suffix[MAX_LENGTH];
1.60 cvs 339:
340: if (!path)
341: return (FALSE);
342:
1.67 cvs 343: ustrcpy (temppath, path);
1.60 cvs 344: ExtractSuffix (temppath, suffix);
345:
1.67 cvs 346: if (!ustrcasecmp (suffix, TEXT("css")))
1.60 cvs 347: return (TRUE);
1.67 cvs 348: else if (!ustrcmp (suffix, TEXT("gz")))
1.60 cvs 349: {
350: /* take into account compressed files */
351: ExtractSuffix (temppath, suffix);
1.67 cvs 352: if (!ustrcasecmp (suffix, TEXT("css")))
1.56 cvs 353: return (TRUE);
354: else
355: return (FALSE);
356: }
357: else
358: return (FALSE);
359: }
360:
361: /*----------------------------------------------------------------------
1.9 cvs 362: IsImageName
363: returns TRUE if path points to an image resource.
1.4 cvs 364: ----------------------------------------------------------------------*/
1.3 cvs 365: #ifdef __STDC__
1.67 cvs 366: ThotBool IsImageName (const STRING path)
1.3 cvs 367: #else /* __STDC__ */
1.67 cvs 368: ThotBool IsImageName (path)
369: const STRING path;
1.3 cvs 370: #endif /* __STDC__ */
371: {
1.67 cvs 372: CHAR_T temppath[MAX_LENGTH];
373: CHAR_T suffix[MAX_LENGTH];
374: CHAR_T nsuffix[MAX_LENGTH];
1.5 cvs 375: int i;
376:
377: if (!path)
1.13 cvs 378: return (FALSE);
1.5 cvs 379:
1.67 cvs 380: ustrcpy (temppath, path);
1.5 cvs 381: ExtractSuffix (temppath, suffix);
382:
383: /* Normalize the suffix */
384: i = 0;
1.39 cvs 385: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 386: {
1.67 cvs 387: nsuffix[i] = utolower (suffix[i]);
1.13 cvs 388: i++;
389: }
1.5 cvs 390: nsuffix[i] = EOS;
1.67 cvs 391: if ((!ustrcmp (nsuffix, TEXT("gif"))) || (!ustrcmp (nsuffix, TEXT("xbm"))) ||
392: (!ustrcmp (nsuffix, TEXT("xpm"))) || (!ustrcmp (nsuffix, TEXT("jpg"))) ||
393: (!ustrcmp (nsuffix, TEXT("png"))) || (!ustrcmp (nsuffix, TEXT("au"))))
1.39 cvs 394: return (TRUE);
395: return (FALSE);
1.3 cvs 396: }
397:
1.4 cvs 398: /*----------------------------------------------------------------------
1.58 cvs 399: IsImageType
400: returns TRUE if type points to an image resource.
401: ----------------------------------------------------------------------*/
402: #ifdef __STDC__
1.67 cvs 403: ThotBool IsImageType (const STRING type)
1.58 cvs 404: #else /* __STDC__ */
1.67 cvs 405: ThotBool IsImageType (type)
406: const STRING type;
1.58 cvs 407: #endif /* __STDC__ */
408: {
1.67 cvs 409: CHAR_T temptype[MAX_LENGTH];
1.58 cvs 410: int i;
411:
412: if (!type)
413: return (FALSE);
414:
1.67 cvs 415: ustrcpy (temptype, type);
1.58 cvs 416: /* Normalize the type */
417: i = 0;
418: while (temptype[i] != EOS)
419: {
420: temptype[i] = tolower (temptype[i]);
421: i++;
422: }
1.67 cvs 423: if ((!ustrcmp (temptype, TEXT("gif"))) || (!ustrcmp (temptype, TEXT("x-xbitmap"))) ||
424: (!ustrcmp (temptype, TEXT("x-xpixmap"))) || (!ustrcmp (temptype, TEXT("jpeg"))) ||
425: (!ustrcmp (temptype, TEXT("png"))))
1.58 cvs 426: return (TRUE);
427: return (FALSE);
428: }
429:
430: /*----------------------------------------------------------------------
1.9 cvs 431: IsTextName
1.4 cvs 432: ----------------------------------------------------------------------*/
1.3 cvs 433: #ifdef __STDC__
1.67 cvs 434: ThotBool IsTextName (const STRING path)
1.3 cvs 435: #else /* __STDC__ */
1.67 cvs 436: ThotBool IsTextName (path)
437: const STRING path;
1.3 cvs 438:
439: #endif /* __STDC__ */
440: {
1.67 cvs 441: CHAR_T temppath[MAX_LENGTH];
442: CHAR_T suffix[MAX_LENGTH];
443: CHAR_T nsuffix[MAX_LENGTH];
1.5 cvs 444: int i;
445:
446: if (!path)
1.13 cvs 447: return (FALSE);
1.5 cvs 448:
1.67 cvs 449: ustrcpy (temppath, path);
1.5 cvs 450: ExtractSuffix (temppath, suffix);
451:
452: /* Normalize the suffix */
453: i = 0;
1.39 cvs 454: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.5 cvs 455: {
1.25 cvs 456: nsuffix[i] = tolower (suffix[i]);
1.5 cvs 457: i++;
458: }
459: nsuffix[i] = EOS;
460:
1.67 cvs 461: if ((!ustrcmp (nsuffix, TEXT("txt"))) || (!ustrcmp (nsuffix, TEXT("dtd"))))
1.13 cvs 462: return (TRUE);
1.67 cvs 463: else if (!ustrcmp (nsuffix, TEXT("gz")))
1.13 cvs 464: {
1.39 cvs 465: /* take into account compressed files */
1.13 cvs 466: ExtractSuffix (temppath, suffix);
467: /* Normalize the suffix */
468: i = 0;
1.39 cvs 469: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 470: {
1.25 cvs 471: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 472: i++;
473: }
474: nsuffix[i] = EOS;
1.67 cvs 475: if ((!ustrcmp (nsuffix, TEXT("txt"))) || (!ustrcmp (nsuffix, TEXT("dtd"))))
1.13 cvs 476: return (TRUE);
477: else
478: return (FALSE);
479: }
480: else
481: return (FALSE);
1.3 cvs 482: }
483:
1.4 cvs 484: /*----------------------------------------------------------------------
1.9 cvs 485: IsHTTPPath
486: returns TRUE if path is in fact an http URL.
1.4 cvs 487: ----------------------------------------------------------------------*/
1.3 cvs 488: #ifdef __STDC__
1.67 cvs 489: ThotBool IsHTTPPath (const STRING path)
1.3 cvs 490: #else /* __STDC__ */
1.67 cvs 491: ThotBool IsHTTPPath (path)
492: const STRING path;
1.3 cvs 493: #endif /* __STDC__ */
494: {
1.5 cvs 495: if (!path)
496: return FALSE;
1.3 cvs 497:
1.67 cvs 498: if ((!ustrncmp (path, TEXT("http:"), 5) != 0)
499: || !ustrncmp (path, TEXT("internal:"), 9))
1.58 cvs 500: return TRUE;
501: return FALSE;
1.3 cvs 502: }
503:
1.4 cvs 504: /*----------------------------------------------------------------------
1.9 cvs 505: IsWithParameters
506: returns TRUE if url has a concatenated query string.
1.4 cvs 507: ----------------------------------------------------------------------*/
1.3 cvs 508: #ifdef __STDC__
1.66 cvs 509: ThotBool IsWithParameters (const char *url)
1.3 cvs 510: #else /* __STDC__ */
1.66 cvs 511: ThotBool IsWithParameters (url)
1.34 cvs 512: const char *url;
1.3 cvs 513: #endif /* __STDC__ */
514: {
1.5 cvs 515: int i;
1.3 cvs 516:
1.9 cvs 517: if ((!url) || (url[0] == EOS))
1.5 cvs 518: return FALSE;
1.3 cvs 519:
1.9 cvs 520: i = strlen (url) - 1;
521: while (i > 0 && url[i--] != '?')
1.5 cvs 522: if (i < 0)
523: return FALSE;
1.3 cvs 524:
1.5 cvs 525: /* There is a parameter */
526: return TRUE;
1.3 cvs 527: }
528:
1.4 cvs 529: /*----------------------------------------------------------------------
1.9 cvs 530: IsW3Path
531: returns TRUE if path is in fact a URL.
1.4 cvs 532: ----------------------------------------------------------------------*/
1.3 cvs 533: #ifdef __STDC__
1.67 cvs 534: ThotBool IsW3Path (const STRING path)
1.3 cvs 535: #else /* __STDC__ */
1.67 cvs 536: ThotBool IsW3Path (path)
537: const STRING path;
1.3 cvs 538: #endif /* __STDC__ */
539: {
1.67 cvs 540: if ((ustrncmp (path, TEXT("http:"), 5)) && (ustrncmp (path, TEXT("ftp:"), 4)) &&
541: (ustrncmp (path, TEXT("telnet:"), 7)) && (ustrncmp (path, TEXT("wais:"), 5)) &&
542: (ustrncmp (path, TEXT("news:"), 5)) && (ustrncmp (path, TEXT("gopher:"), 7)) &&
543: (ustrncmp (path, TEXT("mailto:"), 7)) && (ustrncmp (path, TEXT("archie:"), 7)))
1.5 cvs 544: return FALSE;
545: return TRUE;
1.3 cvs 546: }
547:
1.4 cvs 548: /*----------------------------------------------------------------------
1.9 cvs 549: IsValidProtocol
550: returns true if the url protocol is supported by Amaya.
1.4 cvs 551: ----------------------------------------------------------------------*/
1.3 cvs 552: #ifdef __STDC__
1.67 cvs 553: ThotBool IsValidProtocol (const STRING url)
1.3 cvs 554: #else /* __STDC__ */
1.67 cvs 555: ThotBool IsValidProtocol (url)
556: const STRING url;
1.3 cvs 557: #endif /* __STDC__ */
558: {
1.67 cvs 559: if (!ustrncmp (url, TEXT("http:"), 5)
1.69 ! cvs 560: || !ustrncmp (url, TEXT("internal:"), 9)
! 561: || !strncmp (url, "ftp:", 4))
1.22 cvs 562: /* experimental */
1.58 cvs 563: /*** || !strncmp (url, "ftp:", 4) ***/
1.24 cvs 564: /*** || !strncmp (path, "news:", 5)***/
1.8 cvs 565: return (TRUE);
1.5 cvs 566: else
1.8 cvs 567: return (FALSE);
1.3 cvs 568: }
569:
1.31 cvs 570:
571: /*----------------------------------------------------------------------
572: GetBaseURL
573: normalizes orgName according to a base associated with doc, and
574: following the standard URL format rules.
575: The function returns the base used to solve relative URL and SRC:
576: - the base of the document,
577: - or the document path (without document name).
578: ----------------------------------------------------------------------*/
579: #ifdef __STDC__
1.67 cvs 580: STRING GetBaseURL (Document doc)
1.31 cvs 581: #else /* __STDC__ */
1.67 cvs 582: STRING GetBaseURL (doc)
1.31 cvs 583: Document doc;
584: #endif /* __STDC__ */
585: {
586: Element el;
587: ElementType elType;
588: AttributeType attrType;
589: Attribute attr;
1.67 cvs 590: STRING ptr, basename;
1.31 cvs 591: int length;
592:
1.57 cvs 593: /* @@@ irene */
594: if (!DocumentURLs[doc])
595: return NULL;
1.67 cvs 596: basename = TtaAllocString (MAX_LENGTH);
597: ustrncpy (basename, DocumentURLs[doc], MAX_LENGTH-1);
1.39 cvs 598: basename[MAX_LENGTH-1] = EOS;
1.31 cvs 599: length = MAX_LENGTH -1;
600: /* get the root element */
601: el = TtaGetMainRoot (doc);
602: /* search the BASE element */
603: elType.ElSSchema = TtaGetDocumentSSchema (doc);
1.65 cvs 604: elType.ElTypeNum = HTML_EL_HEAD;
605: el = TtaSearchTypedElement (elType, SearchForward, el);
606: if (el)
607: {
608: elType.ElTypeNum = HTML_EL_BASE;
609: el = TtaSearchTypedElement (elType, SearchInTree, el);
610: }
1.31 cvs 611: if (el)
612: {
613: /* The document has a BASE element -> Get the HREF attribute */
614: attrType.AttrSSchema = elType.ElSSchema;
615: attrType.AttrTypeNum = HTML_ATTR_HREF_;
616: attr = TtaGetAttribute (el, attrType);
617: if (attr)
618: {
619: /* Use the base path of the document */
620: TtaGiveTextAttributeValue (attr, basename, &length);
621: /* base and orgName have to be separated by a DIR_SEP */
622: length--;
1.43 cvs 623: if (basename[0] != EOS && basename[length] != URL_SEP && basename[length] != DIR_SEP)
1.31 cvs 624: /* verify if the base has the form "protocol://server:port" */
625: {
1.67 cvs 626: ptr = AmayaParseUrl (basename, _EMPTYSTR_, AMAYA_PARSE_ACCESS |
1.33 cvs 627: AMAYA_PARSE_HOST |
628: AMAYA_PARSE_PUNCTUATION);
1.67 cvs 629: if (ptr && !ustrcmp (ptr, basename))
1.31 cvs 630: {
1.43 cvs 631: /* it has this form, we complete it by adding a URL_STR */
1.67 cvs 632: if (ustrchr (basename, DIR_SEP))
633: ustrcat (basename, DIR_STR);
1.43 cvs 634: else
1.67 cvs 635: ustrcat (basename, URL_STR);
1.31 cvs 636: length++;
637: }
638: if (ptr)
639: TtaFreeMemory (ptr);
640: }
641: }
1.33 cvs 642: }
643:
1.31 cvs 644: /* Remove anything after the last DIR_SEP char. If no such char is found,
645: * then search for the first ":" char, hoping that what's before that is a
646: * protocol. If found, end the string there. If neither char is found,
647: * then discard the whole base element.
648: */
1.67 cvs 649: length = ustrlen (basename) - 1;
1.31 cvs 650: /* search for the last DIR_SEP char */
1.43 cvs 651: while (length >= 0 && basename[length] != URL_SEP && basename[length] != DIR_SEP)
1.31 cvs 652: length--;
653: if (length >= 0)
654: /* found the last DIR_SEP char, end the string there */
655: basename[length + 1] = EOS;
656: else
657: /* search for the first PATH_STR char */
658: {
1.67 cvs 659: for (length = 0; basename[length] != TEXT(':') &&
1.31 cvs 660: basename[length] != EOS; length ++);
1.67 cvs 661: if (basename[length] == TEXT(':'))
1.31 cvs 662: /* found, so end the string there */
663: basename[length + 1] = EOS;
664: else
665: /* not found, discard the base */
666: basename[0] = EOS;
667: }
668: return (basename);
669: }
670:
671:
1.4 cvs 672: /*----------------------------------------------------------------------
1.40 cvs 673: GetLocalPath
674: Allocate and return the local document path associated to the url
675: ----------------------------------------------------------------------*/
676: #ifdef __STDC__
1.67 cvs 677: STRING GetLocalPath (Document doc, STRING url)
1.40 cvs 678: #else /* __STDC__ */
1.67 cvs 679: STRING GetLocalPath (doc, url)
1.40 cvs 680: Document doc;
1.67 cvs 681: STRING url;
1.40 cvs 682: #endif /* __STDC__ */
683: {
1.67 cvs 684: STRING ptr, n;
685: STRING documentname;
686: CHAR_T url_sep;
1.40 cvs 687: int len;
1.67 cvs 688: STRING tmpDir, tmpName;
689: ThotBool noFile;
1.40 cvs 690:
691: if (url != NULL)
692: {
693: /* check whether the file name exists */
1.67 cvs 694: len = ustrlen (url) - 1;
1.41 cvs 695: if (IsW3Path)
1.67 cvs 696: url_sep = TEXT('/');
1.41 cvs 697: else
698: url_sep = DIR_SEP;
699: noFile = (url[len] == url_sep);
1.40 cvs 700: if (noFile)
701: url[len] = EOS;
1.67 cvs 702: /* ptr = TtaAllocString (MAX_LENGTH);
703: documentname = TtaAllocString (MAX_LENGTH); */
704: tmpDir = TtaAllocString (MAX_LENGTH );
705: tmpName = TtaAllocString(MAX_LENGTH );
706: TtaExtractName (url, tmpDir, tmpName);
707: ptr = tmpDir;
708: documentname = tmpName;
709:
710: usprintf (ptr, TEXT("%s%s%d%s"), TempFileDirectory, DIR_STR, doc, DIR_STR);
1.40 cvs 711: if (!TtaCheckDirectory (ptr))
712: /* directory did not exist */
1.59 cvs 713: # ifdef _WINDOWS
1.67 cvs 714: umkdir (ptr);
1.59 cvs 715: # else /* !_WINDOWS */
1.67 cvs 716: umkdir (ptr, S_IRWXU);
1.59 cvs 717: # endif /* !_WINDOWS */
1.47 cvs 718:
719: /* don't include the query string within document name */
1.67 cvs 720: n = ustrrchr(documentname, TEXT('?'));
1.47 cvs 721: if (n != NULL)
722: *n = EOS;
1.46 cvs 723: /* don't include ':' within document name */
1.67 cvs 724: n = ustrchr (documentname, TEXT(':'));
1.46 cvs 725: if (n != NULL)
726: *n = EOS;
1.69 ! cvs 727: /* if after all this operations document name
! 728: is empty, let's use noname.html instead */
! 729: if (documentname[0] == EOS)
! 730: ustrcat (ptr, TEXT("noname.html"));
! 731: else
! 732: ustrcat (ptr, documentname);
1.40 cvs 733: TtaFreeMemory (documentname);
734: /* restore the url */
735: if (noFile)
1.41 cvs 736: url[len] = url_sep;
1.40 cvs 737: return (ptr);
738: }
739: else
740: return (NULL);
741: }
742:
743:
744: /*----------------------------------------------------------------------
1.9 cvs 745: NormalizeURL
746: normalizes orgName according to a base associated with doc, and
747: following the standard URL format rules.
1.53 cvs 748: if doc is 0 and otherPath not NULL, normalizes orgName according to this
749: other path.
1.9 cvs 750: The function returns the new complete and normalized URL
1.12 cvs 751: or file name path (newName) and the name of the document (docName).
1.9 cvs 752: N.B. If the function can't find out what's the docName, it assigns
753: the name "noname.html".
1.4 cvs 754: ----------------------------------------------------------------------*/
1.3 cvs 755: #ifdef __STDC__
1.67 cvs 756: void NormalizeURL (STRING orgName, Document doc, STRING newName, STRING docName, STRING otherPath)
1.3 cvs 757: #else /* __STDC__ */
1.53 cvs 758: void NormalizeURL (orgName, doc, newName, docName, otherPath)
1.67 cvs 759: STRING orgName;
1.3 cvs 760: Document doc;
1.67 cvs 761: STRING newName;
762: STRING docName;
763: STRING otherPath;
1.3 cvs 764: #endif /* __STDC__ */
765: {
1.67 cvs 766: STRING basename;
767: CHAR_T tempOrgName[MAX_LENGTH];
768: STRING ptr;
769: CHAR_T used_sep;
770: int length;
1.66 cvs 771: ThotBool check;
1.5 cvs 772:
1.44 cvs 773: # ifdef _WINDOWS
774: int ndx;
775: # endif /* _WINDOWS */
776:
1.5 cvs 777: if (!newName || !docName)
778: return;
1.18 cvs 779:
1.32 cvs 780: if (doc != 0)
1.53 cvs 781: basename = GetBaseURL (doc);
782: else if (otherPath != NULL)
783: basename = TtaStrdup (otherPath);
1.32 cvs 784: else
1.53 cvs 785: basename = NULL;
1.32 cvs 786:
1.18 cvs 787: /*
1.31 cvs 788: * Clean orgName
789: * Make sure we have a complete orgName, without any leading or trailing
790: * white spaces, or trailinbg new lines
791: */
1.5 cvs 792: ptr = orgName;
1.18 cvs 793: /* skip leading white space and new line characters */
1.67 cvs 794: while ((*ptr == SPACE || *ptr == EOL) && *ptr++ != EOS);
795: ustrncpy (tempOrgName, ptr, MAX_LENGTH -1);
1.39 cvs 796: tempOrgName[MAX_LENGTH -1] = EOS;
1.18 cvs 797: /*
1.31 cvs 798: * Make orgName a complete URL
799: * If the URL does not include a protocol, then try to calculate
800: * one using the doc's base element (if it exists),
801: */
1.53 cvs 802: if (tempOrgName[0] == EOS)
803: {
804: newName[0] = EOS;
805: TtaFreeMemory (basename);
806: return;
807: }
1.49 cvs 808:
809: /* clean trailing white space */
1.67 cvs 810: length = ustrlen (tempOrgName) - 1;
1.53 cvs 811: while (tempOrgName[length] == SPACE && tempOrgName[length] == EOL)
812: {
813: tempOrgName[length] = EOS;
814: length--;
815: }
1.50 cvs 816:
1.55 cvs 817: /* remove extra dot (which dot???) */
818: /* ugly, but faster than a strcmp */
1.67 cvs 819: if (tempOrgName[length] == TEXT('.')
820: && (length == 0 || tempOrgName[length-1] != TEXT('.')))
1.55 cvs 821: tempOrgName[length] = EOS;
1.50 cvs 822:
1.53 cvs 823: if (IsW3Path (tempOrgName))
824: {
825: /* the name is complete, go to the Sixth Step */
1.67 cvs 826: ustrcpy (newName, tempOrgName);
1.53 cvs 827: SimplifyUrl (&newName);
828: /* verify if the URL has the form "protocol://server:port" */
1.67 cvs 829: ptr = AmayaParseUrl (newName, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
830: if (ptr && !ustrcmp (ptr, newName)) /* it has this form, we complete it by adding a DIR_STR */
831: ustrcat (newName, URL_STR);
1.49 cvs 832:
1.53 cvs 833: if (ptr)
1.50 cvs 834: TtaFreeMemory (ptr);
1.53 cvs 835: }
836: else if ( basename == NULL)
837: /* the name is complete, go to the Sixth Step */
1.67 cvs 838: ustrcpy (newName, tempOrgName);
1.53 cvs 839: else
840: {
1.31 cvs 841: /* Calculate the absolute URL, using the base or document URL */
1.44 cvs 842: # ifdef _WINDOWS
1.53 cvs 843: if (!IsW3Path (basename))
844: {
1.67 cvs 845: length = ustrlen (tempOrgName);
1.53 cvs 846: for (ndx = 0; ndx < length; ndx++)
1.67 cvs 847: if (tempOrgName [ndx] == TEXT('/'))
848: tempOrgName [ndx] = TEXT('\\');
1.53 cvs 849: }
1.44 cvs 850: # endif /* _WINDOWS */
1.25 cvs 851: ptr = AmayaParseUrl (tempOrgName, basename, AMAYA_PARSE_ALL);
1.53 cvs 852: if (ptr)
853: {
854: SimplifyUrl (&ptr);
1.67 cvs 855: ustrcpy (newName, ptr);
1.53 cvs 856: TtaFreeMemory (ptr);
857: }
858: else
859: newName[0] = EOS;
860: }
1.36 cvs 861:
862: TtaFreeMemory (basename);
1.18 cvs 863: /*
1.31 cvs 864: * Prepare the docname that will refer to this ressource in the
865: * .amaya directory. If the new URL finishes on DIR_SEP, then use
866: * noname.html as a default ressource name
1.18 cvs 867: */
1.53 cvs 868: if (newName[0] != EOS)
869: {
1.67 cvs 870: length = ustrlen (newName) - 1;
1.53 cvs 871: if (newName[length] == URL_SEP || newName[length] == DIR_SEP)
872: {
873: used_sep = newName[length];
874: check = TRUE;
875: while (check)
876: {
1.50 cvs 877: length--;
878: while (length >= 0 && newName[length] != used_sep)
1.53 cvs 879: length--;
1.67 cvs 880: if (!ustrncmp (&newName[length+1], TEXT(".."), 2))
1.53 cvs 881: {
882: newName[length+1] = EOS;
883: /* remove also previous directory */
884: length--;
885: while (length >= 0 && newName[length] != used_sep)
886: length--;
1.67 cvs 887: if (ustrncmp (&newName[length+1], TEXT("//"), 2))
1.53 cvs 888: /* don't remove server name */
1.50 cvs 889: newName[length+1] = EOS;
1.53 cvs 890: }
1.67 cvs 891: else if (!ustrncmp (&newName[length+1], TEXT("."), 1))
1.53 cvs 892: newName[length+1] = EOS;
1.50 cvs 893: else
1.53 cvs 894: check = FALSE;
895: }
1.67 cvs 896: ustrcpy (docName, TEXT("noname.html"));
1.53 cvs 897: /* docname was not comprised inside the URL, so let's */
898: /* assign the default ressource name */
1.67 cvs 899: ustrcpy (docName, TEXT("noname.html"));
1.53 cvs 900: }
901: else
902: { /* docname is comprised inside the URL */
1.50 cvs 903: while (length >= 0 && newName[length] != URL_SEP && newName[length] != DIR_SEP)
1.53 cvs 904: length--;
905: if (length < 0)
1.67 cvs 906: ustrcpy (docName, newName);
1.53 cvs 907: else
1.67 cvs 908: ustrcpy (docName, &newName[length+1]);
1.53 cvs 909: }
910: }
911: else
912: docName[0] = EOS;
1.18 cvs 913: }
1.3 cvs 914:
1.4 cvs 915: /*----------------------------------------------------------------------
1.9 cvs 916: IsSameHost
1.4 cvs 917: ----------------------------------------------------------------------*/
1.3 cvs 918: #ifdef __STDC__
1.67 cvs 919: ThotBool IsSameHost (const STRING url1, const STRING url2)
1.3 cvs 920: #else /* __STDC__ */
1.67 cvs 921: ThotBool IsSameHost (url1, url2)
922: const STRING url1;
923: const STRING url2;
1.3 cvs 924: #endif /* __STDC__ */
925: {
1.67 cvs 926: STRING basename_ptr1, basename_ptr2;
927: ThotBool result;
1.3 cvs 928:
1.67 cvs 929: basename_ptr1 = AmayaParseUrl (url1, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
930: basename_ptr2 = AmayaParseUrl (url2, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
1.3 cvs 931:
1.67 cvs 932: if (ustrcmp (basename_ptr1, basename_ptr2))
1.8 cvs 933: result = FALSE;
1.5 cvs 934: else
1.8 cvs 935: result = TRUE;
1.3 cvs 936:
1.25 cvs 937: TtaFreeMemory (basename_ptr1);
938: TtaFreeMemory (basename_ptr2);
1.5 cvs 939: return (result);
1.3 cvs 940: }
941:
942:
1.4 cvs 943: /*----------------------------------------------------------------------
1.22 cvs 944: HasKnownFileSuffix
945: returns TRUE if path points to a file ending with a suffix.
946: ----------------------------------------------------------------------*/
947: #ifdef __STDC__
1.67 cvs 948: ThotBool HasKnownFileSuffix (const STRING path)
1.22 cvs 949: #else /* __STDC__ */
1.67 cvs 950: ThotBool HasKnownFileSuffix (path)
951: const STRING path;
1.22 cvs 952: #endif /* __STDC__ */
953: {
1.67 cvs 954: STRING root;
955: CHAR_T temppath[MAX_LENGTH];
956: CHAR_T suffix[MAX_LENGTH];
1.22 cvs 957:
1.67 cvs 958: if (!path || path[0] == EOS || path[ustrlen(path)] == DIR_SEP)
1.22 cvs 959: return (FALSE);
960:
1.67 cvs 961: root = AmayaParseUrl(path, _EMPTYSTR_, AMAYA_PARSE_PATH | AMAYA_PARSE_PUNCTUATION);
1.22 cvs 962:
963: if (root)
964: {
1.67 cvs 965: ustrcpy (temppath, root);
1.25 cvs 966: TtaFreeMemory (root);
1.22 cvs 967: /* Get the suffix */
968: ExtractSuffix (temppath, suffix);
969:
970: if( suffix[0] == EOS)
971: /* no suffix */
972: return (FALSE);
973:
974: /* Normalize the suffix */
975: ConvertToLowerCase (suffix);
976:
1.67 cvs 977: if (!ustrcmp (suffix, TEXT("gz")))
1.22 cvs 978: /* skip the compressed suffix */
979: {
980: ExtractSuffix (temppath, suffix);
981: if(suffix[0] == EOS)
982: /* no suffix */
983: return (FALSE);
984: /* Normalize the suffix */
985: ConvertToLowerCase (suffix);
986: }
987:
1.67 cvs 988: if (ustrcmp (suffix, TEXT("gif")) &&
989: ustrcmp (suffix, TEXT("xbm")) &&
990: ustrcmp (suffix, TEXT("xpm")) &&
991: ustrcmp (suffix, TEXT("jpg")) &&
992: ustrcmp (suffix, TEXT("pdf")) &&
993: ustrcmp (suffix, TEXT("png")) &&
994: ustrcmp (suffix, TEXT("tgz")) &&
995: ustrcmp (suffix, TEXT("xpg")) &&
996: ustrcmp (suffix, TEXT("xpd")) &&
997: ustrcmp (suffix, TEXT("ps")) &&
998: ustrcmp (suffix, TEXT("au")) &&
999: ustrcmp (suffix, TEXT("html")) &&
1000: ustrcmp (suffix, TEXT("htm")) &&
1001: ustrcmp (suffix, TEXT("shtml")) &&
1002: ustrcmp (suffix, TEXT("xht")) &&
1003: ustrcmp (suffix, TEXT("xhtm")) &&
1004: ustrcmp (suffix, TEXT("xhtml")) &&
1005: ustrcmp (suffix, TEXT("txt")) &&
1006: ustrcmp (suffix, TEXT("css")) &&
1007: ustrcmp (suffix, TEXT("eps")))
1.22 cvs 1008: return (FALSE);
1009: else
1010: return (TRUE);
1011: }
1012: else
1013: return (FALSE);
1014: }
1015:
1016:
1017: /*----------------------------------------------------------------------
1.24 cvs 1018: ChopURL
1019: Gives back a URL no longer than MAX_PRINT_URL_LENGTH chars (outputURL).
1020: If inputURL is bigger than that size, outputURL receives
1021: MAX_PRINT_URL_LENGTH / 2 chars from the beginning of inputURL, "...",
1022: and MAX_PRINT_URL_LENGTH / 2 chars from the end of inputURL.
1023: If inputURL is not longer than MAX_PRINT_URL_LENGTH chars, it gets
1024: copied into outputURL.
1025: N.B.: outputURL must point to a memory block of MAX_PRINT_URL_LENGTH
1026: chars.
1027: ----------------------------------------------------------------------*/
1028: #ifdef __STDC__
1.34 cvs 1029: void ChopURL (char *outputURL, const char *inputURL)
1.24 cvs 1030: #else
1031: void ChopURL (outputURL, inputURL)
1.34 cvs 1032: char *outputURL;
1033: const char *inputURL;
1.24 cvs 1034: #endif
1.22 cvs 1035:
1.24 cvs 1036: {
1037: int len;
1.9 cvs 1038:
1.24 cvs 1039: len = strlen (inputURL);
1040: if (len <= MAX_PRINT_URL_LENGTH)
1.29 cvs 1041: strcpy (outputURL, inputURL);
1.24 cvs 1042: else
1043: /* make a truncated urlName on the status window */
1044: {
1045: strncpy (outputURL, inputURL, MAX_PRINT_URL_LENGTH / 2);
1046: outputURL [MAX_PRINT_URL_LENGTH / 2] = EOS;
1047: strcat (outputURL, "...");
1048: strcat (outputURL, &(inputURL[len - MAX_PRINT_URL_LENGTH / 2 ]));
1049: }
1.25 cvs 1050: }
1051:
1052:
1053: /*----------------------------------------------------------------------
1054: scan
1.47 cvs 1055: Scan a filename for its constituents
1.25 cvs 1056: -----------------------------------
1057:
1058: On entry,
1059: name points to a document name which may be incomplete.
1060: On exit,
1061: absolute or relative may be nonzero (but not both).
1062: host, fragment and access may be nonzero if they were specified.
1063: Any which are nonzero point to zero terminated strings.
1064: ----------------------------------------------------------------------*/
1065: #ifdef __STDC__
1.67 cvs 1066: static void scan (STRING name, HTURI * parts)
1.25 cvs 1067: #else /* __STDC__ */
1068: static void scan (name, parts)
1.67 cvs 1069: STRING name;
1070: HTURI *parts;
1.25 cvs 1071:
1072: #endif /* __STDC__ */
1073: {
1.67 cvs 1074: STRING p;
1075: STRING after_access = name;
1.32 cvs 1076:
1.43 cvs 1077: memset (parts, '\0', sizeof (HTURI));
1.28 cvs 1078: /* Look for fragment identifier */
1.67 cvs 1079: if ((p = ustrchr(name, TEXT('#'))) != NULL)
1.28 cvs 1080: {
1.67 cvs 1081: *p++ = TEXT('\0');
1.28 cvs 1082: parts->fragment = p;
1.25 cvs 1083: }
1084:
1.28 cvs 1085: for (p=name; *p; p++)
1086: {
1.67 cvs 1087: if (*p == URL_SEP || *p == DIR_SEP || *p == TEXT('#') || *p == TEXT('?'))
1.28 cvs 1088: break;
1.67 cvs 1089: if (*p == TEXT(':'))
1.28 cvs 1090: {
1091: *p = 0;
1092: parts->access = after_access; /* Scheme has been specified */
1093:
1094: /* The combination of gcc, the "-O" flag and the HP platform is
1095: unhealthy. The following three lines is a quick & dirty fix, but is
1096: not recommended. Rather, turn off "-O". */
1097:
1098: /* after_access = p;*/
1099: /* while (*after_access == 0)*/
1100: /* after_access++;*/
1101: after_access = p+1;
1.67 cvs 1102: if (!ustrcasecmp(TEXT("URL"), parts->access))
1.28 cvs 1103: /* Ignore IETF's URL: pre-prefix */
1104: parts->access = NULL;
1105: else
1.25 cvs 1106: break;
1107: }
1108: }
1109:
1110: p = after_access;
1.43 cvs 1111: if (*p == URL_SEP || *p == DIR_SEP)
1.28 cvs 1112: {
1.43 cvs 1113: if (p[1] == URL_SEP)
1.28 cvs 1114: {
1.25 cvs 1115: parts->host = p+2; /* host has been specified */
1.28 cvs 1116: *p = 0; /* Terminate access */
1117: /* look for end of host name if any */
1.67 cvs 1118: p = ustrchr (parts->host, URL_SEP);
1.28 cvs 1119: if (p)
1120: {
1.43 cvs 1121: *p = EOS; /* Terminate host */
1.25 cvs 1122: parts->absolute = p+1; /* Root has been found */
1.28 cvs 1123: }
1124: }
1125: else
1126: /* Root found but no host */
1127: parts->absolute = p+1;
1128: }
1129: else
1130: {
1.25 cvs 1131: parts->relative = (*after_access) ? after_access : 0; /* zero for "" */
1.28 cvs 1132: }
1.25 cvs 1133: }
1134:
1135:
1136: /*----------------------------------------------------------------------
1.28 cvs 1137: AmayaParseUrl: parse a Name relative to another name
1138:
1139: This returns those parts of a name which are given (and requested)
1140: substituting bits from the related name where necessary.
1.25 cvs 1141:
1.28 cvs 1142: On entry,
1.25 cvs 1143: aName A filename given
1144: relatedName A name relative to which aName is to be parsed. Give
1145: it an empty string if aName is absolute.
1146: wanted A mask for the bits which are wanted.
1147:
1.28 cvs 1148: On exit,
1.25 cvs 1149: returns A pointer to a malloc'd string which MUST BE FREED
1150: ----------------------------------------------------------------------*/
1151: #ifdef __STDC__
1.67 cvs 1152: STRING AmayaParseUrl (const STRING aName, STRING relatedName, int wanted)
1.25 cvs 1153: #else /* __STDC__ */
1.67 cvs 1154: STRING AmayaParseUrl (aName, relatedName, wanted)
1155: const STRING aName;
1156: STRING relatedName;
1.28 cvs 1157: int wanted;
1.25 cvs 1158:
1159: #endif /* __STDC__ */
1160: {
1.67 cvs 1161: STRING return_value;
1162: CHAR_T result[MAX_LENGTH];
1163: CHAR_T name[MAX_LENGTH];
1164: CHAR_T rel[MAX_LENGTH];
1165: STRING p, access;
1.29 cvs 1166: HTURI given, related;
1167: int len;
1.67 cvs 1168: CHAR_T used_sep;
1169: STRING used_str;
1.32 cvs 1170:
1.67 cvs 1171: if (ustrchr (aName, DIR_SEP) || ustrchr (relatedName, DIR_SEP))
1.33 cvs 1172: {
1.42 cvs 1173: used_str = DIR_STR;
1174: used_sep = DIR_SEP;
1.33 cvs 1175: }
1.32 cvs 1176: else
1.33 cvs 1177: {
1.42 cvs 1178: used_str = URL_STR;
1179: used_sep = URL_SEP;
1.33 cvs 1180: }
1.32 cvs 1181:
1.29 cvs 1182: /* Make working copies of input strings to cut up: */
1183: return_value = NULL;
1184: result[0] = 0; /* Clear string */
1.67 cvs 1185: ustrcpy (name, aName);
1.29 cvs 1186: if (relatedName != NULL)
1.67 cvs 1187: ustrcpy (rel, relatedName);
1.29 cvs 1188: else
1189: relatedName[0] = EOS;
1190:
1191: scan (name, &given);
1192: scan (rel, &related);
1193: access = given.access ? given.access : related.access;
1194: if (wanted & AMAYA_PARSE_ACCESS)
1195: if (access)
1196: {
1.67 cvs 1197: ustrcat (result, access);
1.29 cvs 1198: if(wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1199: ustrcat (result, TEXT(":"));
1.29 cvs 1200: }
1201:
1202: if (given.access && related.access)
1203: /* If different, inherit nothing. */
1.67 cvs 1204: if (ustrcmp (given.access, related.access) != 0)
1.29 cvs 1205: {
1206: related.host = 0;
1207: related.absolute = 0;
1208: related.relative = 0;
1209: related.fragment = 0;
1210: }
1211:
1212: if (wanted & AMAYA_PARSE_HOST)
1213: if(given.host || related.host)
1214: {
1215: if(wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1216: ustrcat (result, TEXT("//"));
1217: ustrcat (result, given.host ? given.host : related.host);
1.29 cvs 1218: }
1219:
1220: if (given.host && related.host)
1221: /* If different hosts, inherit no path. */
1.67 cvs 1222: if (ustrcmp (given.host, related.host) != 0)
1.29 cvs 1223: {
1224: related.absolute = 0;
1225: related.relative = 0;
1226: related.fragment = 0;
1227: }
1228:
1229: if (wanted & AMAYA_PARSE_PATH)
1230: {
1231: if (given.absolute)
1232: {
1233: /* All is given */
1234: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1235: ustrcat (result, used_str);
1236: ustrcat (result, given.absolute);
1.25 cvs 1237: }
1.29 cvs 1238: else if (related.absolute)
1239: {
1240: /* Adopt path not name */
1.67 cvs 1241: ustrcat (result, used_str);
1242: ustrcat (result, related.absolute);
1.29 cvs 1243: if (given.relative)
1244: {
1245: /* Search part? */
1.67 cvs 1246: p = ustrchr (result, TEXT('?'));
1.29 cvs 1247: if (!p)
1.67 cvs 1248: p=result+ustrlen(result)-1;
1.33 cvs 1249: for (; *p!=used_sep; p--); /* last / */
1.29 cvs 1250: /* Remove filename */
1251: p[1]=0;
1252: /* Add given one */
1.67 cvs 1253: ustrcat (result, given.relative);
1.25 cvs 1254: }
1255: }
1.29 cvs 1256: else if (given.relative)
1257: /* what we've got */
1.67 cvs 1258: ustrcat (result, given.relative);
1.29 cvs 1259: else if (related.relative)
1.67 cvs 1260: ustrcat (result, related.relative);
1.29 cvs 1261: else
1262: /* No inheritance */
1.67 cvs 1263: ustrcat (result, used_str);
1.25 cvs 1264: }
1.29 cvs 1265:
1266: if (wanted & AMAYA_PARSE_ANCHOR)
1267: if (given.fragment || related.fragment)
1268: {
1269: if (given.absolute && given.fragment)
1270: {
1271: /*Fixes for relURLs...*/
1272: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1273: ustrcat (result, TEXT("#"));
1274: ustrcat (result, given.fragment);
1.29 cvs 1275: }
1276: else if (!(given.absolute) && !(given.fragment))
1.67 cvs 1277: ustrcat (result, _EMPTYSTR_);
1.29 cvs 1278: else
1279: {
1280: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1281: ustrcat (result, TEXT("#"));
1282: ustrcat (result, given.fragment ? given.fragment : related.fragment);
1.29 cvs 1283: }
1284: }
1.67 cvs 1285: len = ustrlen (result);
1286: if ((return_value = TtaAllocString (len + 1)) != NULL)
1287: ustrcpy (return_value, result);
1.29 cvs 1288: return (return_value); /* exactly the right length */
1.25 cvs 1289: }
1290:
1291: /*----------------------------------------------------------------------
1292: HTCanon
1293: Canonicalizes the URL in the following manner starting from the host
1294: pointer:
1295:
1296: 1) The host name is converted to lowercase
1297: 2) Chop off port if `:80' (http), `:70' (gopher), or `:21' (ftp)
1298:
1299: Return: OK The position of the current path part of the URL
1300: which might be the old one or a new one.
1301:
1302: ----------------------------------------------------------------------*/
1303: #ifdef __STDC__
1.67 cvs 1304: static STRING HTCanon (STRING* filename, STRING host)
1.25 cvs 1305: #else /* __STDC__ */
1.67 cvs 1306: static STRING HTCanon (filename, host)
1307: STRING *filename;
1308: STRING host;
1.25 cvs 1309: #endif /* __STDC__ */
1310: {
1.67 cvs 1311: STRING newname = NULL;
1312: STRING port;
1313: STRING strptr;
1314: STRING path;
1315: STRING access = host-3;
1316: CHAR_T used_sep;
1.32 cvs 1317:
1318:
1.67 cvs 1319: if (*filename && ustrchr (*filename, URL_SEP))
1.33 cvs 1320: {
1321: used_sep = URL_SEP;
1322: }
1323: else
1324: {
1325: used_sep = DIR_SEP;
1326: }
1.32 cvs 1327:
1.33 cvs 1328: while (access>*filename && *(access-1)!= used_sep) /* Find access method */
1.25 cvs 1329: access--;
1.67 cvs 1330: if ((path = ustrchr(host, used_sep)) == NULL) /* Find path */
1331: path = host + ustrlen(host);
1332: if ((strptr = ustrchr(host, TEXT('@'))) != NULL && strptr<path) /* UserId */
1.25 cvs 1333: host = strptr;
1.67 cvs 1334: if ((port = ustrchr(host, TEXT(':'))) != NULL && port>path) /* Port number */
1.25 cvs 1335: port = NULL;
1336:
1337: strptr = host; /* Convert to lower-case */
1.33 cvs 1338: while (strptr<path)
1339: {
1.25 cvs 1340: *strptr = tolower(*strptr);
1341: strptr++;
1.33 cvs 1342: }
1.25 cvs 1343:
1344: /* Does the URL contain a full domain name? This also works for a
1345: numerical host name. The domain name is already made lower-case
1346: and without a trailing dot. */
1347: {
1.67 cvs 1348: STRING dot = port ? port : path;
1349: if (dot > *filename && *--dot == TEXT('.'))
1.33 cvs 1350: {
1.67 cvs 1351: STRING orig=dot, dest=dot+1;
1.33 cvs 1352: while((*orig++ = *dest++));
1353: if (port) port--;
1354: path--;
1.25 cvs 1355: }
1356: }
1357: /* Chop off port if `:', `:80' (http), `:70' (gopher), or `:21' (ftp) */
1.33 cvs 1358: if (port)
1359: {
1360: if (!*(port+1) || *(port+1)==used_sep)
1361: {
1362: if (!newname)
1363: {
1.67 cvs 1364: STRING orig=port, dest=port+1;
1.25 cvs 1365: while((*orig++ = *dest++));
1.33 cvs 1366: }
1367: }
1.67 cvs 1368: else if ((!ustrncmp(access, TEXT("http"), 4) &&
1369: (*(port+1) == TEXT('8') && *(port+2) == TEXT('0') && (*(port+3) == used_sep || !*(port + 3)))) ||
1370: (!ustrncmp (access, TEXT("gopher"), 6) &&
1371: (*(port+1) == TEXT('7') && *(port+2) == TEXT('0') && (*(port+3) == used_sep || !*(port+3)))) ||
1372: (!ustrncmp(access, TEXT("ftp"), 3) &&
1373: (*(port+1) == TEXT('2') && *(port + 2) == TEXT('1') && (*(port+3) == used_sep || !*(port+3))))) {
1.33 cvs 1374: if (!newname)
1375: {
1.67 cvs 1376: STRING orig=port, dest=port+3;
1.33 cvs 1377: while((*orig++ = *dest++));
1378: /* Update path position, Henry Minsky */
1379: path -= 3;
1.25 cvs 1380: }
1.33 cvs 1381: }
1382: else if (newname)
1.67 cvs 1383: ustrncat(newname, port, (int) (path-port));
1.33 cvs 1384: }
1.25 cvs 1385:
1.33 cvs 1386: if (newname)
1387: {
1.67 cvs 1388: STRING newpath = newname + ustrlen (newname);
1389: ustrcat(newname, path);
1.25 cvs 1390: path = newpath;
1.28 cvs 1391: /* Free old copy */
1392: TtaFreeMemory(*filename);
1.25 cvs 1393: *filename = newname;
1.33 cvs 1394: }
1.25 cvs 1395: return path;
1396: }
1397:
1398:
1399: /*----------------------------------------------------------------------
1.29 cvs 1400: SimplifyUrl: simplify a URI
1.32 cvs 1401: A URI is allowed to contain the sequence xxx/../ which may be
1402: replaced by "" , and the sequence "/./" which may be replaced by DIR_STR.
1.28 cvs 1403: Simplification helps us recognize duplicate URIs.
1.25 cvs 1404:
1.28 cvs 1405: Thus, /etc/junk/../fred becomes /etc/fred
1406: /etc/junk/./fred becomes /etc/junk/fred
1.25 cvs 1407:
1.28 cvs 1408: but we should NOT change
1409: http://fred.xxx.edu/../..
1.25 cvs 1410:
1411: or ../../albert.html
1412:
1.28 cvs 1413: In order to avoid empty URLs the following URLs become:
1.25 cvs 1414:
1415: /fred/.. becomes /fred/..
1416: /fred/././.. becomes /fred/..
1417: /fred/.././junk/.././ becomes /fred/..
1418:
1.28 cvs 1419: If more than one set of `://' is found (several proxies in cascade) then
1420: only the part after the last `://' is simplified.
1.25 cvs 1421:
1.28 cvs 1422: Returns: A string which might be the old one or a new one.
1.25 cvs 1423: ----------------------------------------------------------------------*/
1424: #ifdef __STDC__
1.67 cvs 1425: void SimplifyUrl (STRING* url)
1.25 cvs 1426: #else /* __STDC__ */
1.29 cvs 1427: void SimplifyUrl (url)
1.67 cvs 1428: STRING *url;
1.25 cvs 1429: #endif /* __STDC__ */
1430: {
1.67 cvs 1431: STRING path, p;
1432: STRING newptr, access;
1433: STRING orig, dest, end;
1.28 cvs 1434:
1.67 cvs 1435: CHAR_T used_sep;
1.32 cvs 1436:
1437:
1.28 cvs 1438: if (!url || !*url)
1439: return;
1440:
1.67 cvs 1441: if (ustrchr (*url, URL_SEP))
1.33 cvs 1442: {
1443: used_sep = URL_SEP;
1444: }
1.32 cvs 1445: else
1.33 cvs 1446: {
1447: used_sep = DIR_SEP;
1448: }
1.32 cvs 1449:
1.28 cvs 1450: /* Find any scheme name */
1.67 cvs 1451: if ((path = ustrstr(*url, TEXT("://"))) != NULL)
1.33 cvs 1452: {
1453: /* Find host name */
1.28 cvs 1454: access = *url;
1455: while (access<path && (*access=tolower(*access)))
1456: access++;
1457: path += 3;
1.67 cvs 1458: while ((newptr = ustrstr(path, TEXT("://"))) != NULL)
1.28 cvs 1459: /* For proxies */
1460: path = newptr+3;
1461: /* We have a host name */
1462: path = HTCanon(url, path);
1.25 cvs 1463: }
1.67 cvs 1464: else if ((path = ustrstr(*url, TEXT(":/"))) != NULL)
1.28 cvs 1465: path += 2;
1466: else
1467: path = *url;
1.25 cvs 1468:
1.33 cvs 1469: if (*path == used_sep && *(path+1)==used_sep)
1.28 cvs 1470: /* Some URLs start //<foo> */
1471: path += 1;
1.67 cvs 1472: else if (!ustrncmp(path, TEXT("news:"), 5))
1.28 cvs 1473: {
1.67 cvs 1474: newptr = ustrchr(path+5, TEXT('@'));
1.28 cvs 1475: if (!newptr)
1476: newptr = path + 5;
1477: while (*newptr)
1478: {
1479: /* Make group or host lower case */
1480: *newptr = tolower (*newptr);
1481: newptr++;
1.25 cvs 1482: }
1.28 cvs 1483: /* Doesn't need to do any more */
1484: return;
1.25 cvs 1485: }
1.28 cvs 1486:
1487: if ((p = path))
1488: {
1.67 cvs 1489: if (!((end = ustrchr (path, TEXT(';'))) || (end = ustrchr (path, TEXT('?'))) ||
1490: (end = ustrchr (path, TEXT('#')))))
1491: end = path + ustrlen (path);
1.28 cvs 1492:
1493: /* Parse string second time to simplify */
1494: p = path;
1495: while (p < end)
1496: {
1.33 cvs 1497: if (*p==used_sep)
1.28 cvs 1498: {
1.67 cvs 1499: if (p > *url && *(p+1) == TEXT('.') && (*(p+2) == used_sep || !*(p+2)))
1.28 cvs 1500: {
1501: orig = p + 1;
1.33 cvs 1502: dest = (*(p+2)!=used_sep) ? p+2 : p+3;
1.52 cvs 1503: while ((*orig++ = *dest++)); /* Remove a used_sep and a dot*/
1.28 cvs 1504: end = orig - 1;
1505: }
1.67 cvs 1506: else if (*(p+1) == TEXT('.') && *(p+2) == TEXT('.') && (*(p+3) == used_sep || !*(p+3)))
1.28 cvs 1507: {
1508: newptr = p;
1.52 cvs 1509: while (newptr>path && *--newptr!=used_sep); /* prev used_sep */
1510: if (*newptr == used_sep)
1511: orig = newptr + 1;
1.28 cvs 1512: else
1.52 cvs 1513: orig = newptr;
1514:
1515: dest = (*(p+3) != used_sep) ? p+3 : p+4;
1516: while ((*orig++ = *dest++)); /* Remove /xxx/.. */
1517: end = orig-1;
1518: /* Start again with prev slash */
1519: p = newptr;
1.28 cvs 1520: }
1.33 cvs 1521: else if (*(p+1) == used_sep)
1.28 cvs 1522: {
1.33 cvs 1523: while (*(p+1) == used_sep)
1.28 cvs 1524: {
1525: orig = p;
1526: dest = p + 1;
1527: while ((*orig++ = *dest++)); /* Remove multiple /'s */
1528: end = orig-1;
1529: }
1530: }
1531: else
1.25 cvs 1532: p++;
1.28 cvs 1533: }
1534: else
1535: p++;
1.25 cvs 1536: }
1537: }
1.51 cvs 1538:
1539: /*
1540: ** Check for host/../.. kind of things
1541: */
1.67 cvs 1542: if (*path == used_sep && *(path+1) == TEXT('.') && *(path+2) == TEXT('.') && (!*(path+3) || *(path+3) == used_sep))
1.51 cvs 1543: *(path+1) = EOS;
1544:
1.28 cvs 1545: return;
1546: }
1547:
1548:
1549: /*----------------------------------------------------------------------
1550: NormalizeFile normalizes local names.
1551: Return TRUE if target and src differ.
1552: ----------------------------------------------------------------------*/
1553: #ifdef __STDC__
1.67 cvs 1554: ThotBool NormalizeFile (STRING src, STRING target)
1.28 cvs 1555: #else
1.67 cvs 1556: ThotBool NormalizeFile (src, target)
1557: STRING src;
1558: STRING target;
1.28 cvs 1559:
1560: #endif
1561: {
1.67 cvs 1562: STRING s;
1.66 cvs 1563: ThotBool change;
1.28 cvs 1564:
1.54 cvs 1565: change = FALSE;
1.67 cvs 1566: if (ustrncmp (src, TEXT("file:"), 5) == 0)
1.28 cvs 1567: {
1568: /* remove the prefix file: */
1569: if (src[5] == EOS)
1.67 cvs 1570: ustrcpy (target, DIR_STR);
1571: else if (src[0] == TEXT('~'))
1.28 cvs 1572: {
1573: /* replace ~ */
1.67 cvs 1574: s = TtaGetEnvString (TEXT("HOME"));
1575: ustrcpy (target, s);
1576: ustrcat (target, &src[5]);
1.28 cvs 1577: }
1578: else
1.67 cvs 1579: ustrcpy (target, &src[5]);
1.54 cvs 1580: change = TRUE;
1.28 cvs 1581: }
1.53 cvs 1582: # ifndef _WINDOWS
1.67 cvs 1583: else if (src[0] == TEXT('~'))
1.53 cvs 1584: {
1585: /* replace ~ */
1586: s = (char *) TtaGetEnvString ("HOME");
1587: strcpy (target, s);
1588: if (src[1] != DIR_SEP)
1589: strcat (target, DIR_STR);
1590: strcat (target, &src[1]);
1.54 cvs 1591: change = TRUE;
1.53 cvs 1592: }
1593: # endif /* _WINDOWS */
1.28 cvs 1594: else
1.67 cvs 1595: ustrcpy (target, src);
1.28 cvs 1596:
1597: /* remove /../ and /./ */
1.29 cvs 1598: SimplifyUrl (&target);
1.54 cvs 1599: if (!change)
1.67 cvs 1600: change = ustrcmp (src, target);
1.28 cvs 1601: return (change);
1.25 cvs 1602: }
1603:
1.28 cvs 1604:
1.25 cvs 1605: /*----------------------------------------------------------------------
1.31 cvs 1606: MakeRelativeURL: make relative name
1.25 cvs 1607:
1.28 cvs 1608: This function creates and returns a string which gives an expression of
1609: one address as related to another. Where there is no relation, an absolute
1610: address is retured.
1.25 cvs 1611:
1.28 cvs 1612: On entry,
1.25 cvs 1613: Both names must be absolute, fully qualified names of nodes
1614: (no fragment bits)
1615:
1.28 cvs 1616: On exit,
1.25 cvs 1617: The return result points to a newly allocated name which, if
1618: parsed by AmayaParseUrl relative to relatedName, will yield aName.
1619: The caller is responsible for freeing the resulting name later.
1620: ----------------------------------------------------------------------*/
1621: #ifdef __STDC__
1.67 cvs 1622: STRING MakeRelativeURL (STRING aName, STRING relatedName)
1.25 cvs 1623: #else /* __STDC__ */
1.67 cvs 1624: STRING MakeRelativeURL (aName, relatedName)
1625: STRING aName;
1626: STRING relatedName;
1.25 cvs 1627: #endif /* __STDC__ */
1628: {
1.67 cvs 1629: STRING return_value;
1630: CHAR_T result[MAX_LENGTH];
1631: STRING p;
1632: STRING q;
1633: STRING after_access;
1634: STRING last_slash = NULL;
1.29 cvs 1635: int slashes, levels, len;
1636:
1.44 cvs 1637: # ifdef _WINDOWS
1638: int ndx;
1639: # endif /* _WINDOWS */
1640:
1.29 cvs 1641: if (aName == NULL || relatedName == NULL)
1642: return (NULL);
1643:
1644: slashes = 0;
1645: after_access = NULL;
1646: p = aName;
1647: q = relatedName;
1648: for (; *p && (*p == *q); p++, q++)
1.27 cvs 1649: {
1650: /* Find extent of match */
1.67 cvs 1651: if (*p == TEXT(':'))
1.29 cvs 1652: after_access = p + 1;
1.28 cvs 1653: if (*p == DIR_SEP)
1.27 cvs 1654: {
1.29 cvs 1655: /* memorize the last slash position and count them */
1.27 cvs 1656: last_slash = p;
1657: slashes++;
1.25 cvs 1658: }
1659: }
1660:
1.31 cvs 1661: /* q, p point to the first non-matching character or zero */
1662: if (*q == EOS)
1663: {
1664: /* New name is a subset of the related name */
1665: /* exactly the right length */
1.67 cvs 1666: len = ustrlen (p);
1667: if ((return_value = TtaAllocString (len + 1)) != NULL)
1668: ustrcpy (return_value, p);
1.31 cvs 1669: }
1670: else if ((slashes < 2 && after_access == NULL)
1671: || (slashes < 3 && after_access != NULL))
1672: {
1673: /* Two names whitout common path */
1674: /* exactly the right length */
1.67 cvs 1675: len = ustrlen (aName);
1676: if ((return_value = TtaAllocString (len + 1)) != NULL)
1677: ustrcpy (return_value, aName);
1.31 cvs 1678: }
1679: else
1680: {
1681: /* Some path in common */
1.67 cvs 1682: if (slashes == 3 && ustrncmp (aName, TEXT("http:"), 5) == 0)
1.31 cvs 1683: /* just the same server */
1.67 cvs 1684: ustrcpy (result, last_slash);
1.31 cvs 1685: else
1686: {
1687: levels= 0;
1.67 cvs 1688: for (; *q && *q != TEXT('#') && *q != TEXT(';') && *q != TEXT('?'); q++)
1.31 cvs 1689: if (*q == DIR_SEP)
1690: levels++;
1691:
1.52 cvs 1692: result[0] = EOS;
1.31 cvs 1693: for (;levels; levels--)
1.67 cvs 1694: ustrcat (result, TEXT("../"));
1695: ustrcat (result, last_slash+1);
1.31 cvs 1696: }
1.52 cvs 1697:
1698: if (!*result)
1.67 cvs 1699: ustrcat (result, TEXT("./"));
1.52 cvs 1700:
1.31 cvs 1701: /* exactly the right length */
1.67 cvs 1702: len = ustrlen (result);
1703: if ((return_value = TtaAllocString (len + 1)) != NULL)
1704: ustrcpy (return_value, result);
1.52 cvs 1705:
1.25 cvs 1706: }
1.44 cvs 1707: # ifdef _WINDOWS
1.67 cvs 1708: len = ustrlen (return_value);
1.44 cvs 1709: for (ndx = 0; ndx < len; ndx ++)
1.67 cvs 1710: if (return_value[ndx] == TEXT('\\'))
1711: return_value[ndx] = TEXT('/') ;
1.44 cvs 1712: # endif /* _WINDOWS */
1.29 cvs 1713: return (return_value);
1.24 cvs 1714: }
1.35 cvs 1715:
1716:
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