Annotation of Amaya/amaya/AHTURLTools.c, revision 1.72
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: {
1.72 ! 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))
! 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)
1.70 cvs 561: || !ustrncmp (url, TEXT("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;
1.71 cvs 695: if (IsW3Path (url))
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 */
1.72 ! cvs 713: TtaMakeDirectory (ptr);
1.47 cvs 714:
715: /* don't include the query string within document name */
1.67 cvs 716: n = ustrrchr(documentname, TEXT('?'));
1.47 cvs 717: if (n != NULL)
718: *n = EOS;
1.46 cvs 719: /* don't include ':' within document name */
1.67 cvs 720: n = ustrchr (documentname, TEXT(':'));
1.46 cvs 721: if (n != NULL)
722: *n = EOS;
1.69 cvs 723: /* if after all this operations document name
724: is empty, let's use noname.html instead */
725: if (documentname[0] == EOS)
726: ustrcat (ptr, TEXT("noname.html"));
727: else
728: ustrcat (ptr, documentname);
1.40 cvs 729: TtaFreeMemory (documentname);
730: /* restore the url */
731: if (noFile)
1.41 cvs 732: url[len] = url_sep;
1.40 cvs 733: return (ptr);
734: }
735: else
736: return (NULL);
737: }
738:
739:
740: /*----------------------------------------------------------------------
1.9 cvs 741: NormalizeURL
742: normalizes orgName according to a base associated with doc, and
743: following the standard URL format rules.
1.53 cvs 744: if doc is 0 and otherPath not NULL, normalizes orgName according to this
745: other path.
1.9 cvs 746: The function returns the new complete and normalized URL
1.12 cvs 747: or file name path (newName) and the name of the document (docName).
1.9 cvs 748: N.B. If the function can't find out what's the docName, it assigns
749: the name "noname.html".
1.4 cvs 750: ----------------------------------------------------------------------*/
1.3 cvs 751: #ifdef __STDC__
1.67 cvs 752: void NormalizeURL (STRING orgName, Document doc, STRING newName, STRING docName, STRING otherPath)
1.3 cvs 753: #else /* __STDC__ */
1.53 cvs 754: void NormalizeURL (orgName, doc, newName, docName, otherPath)
1.67 cvs 755: STRING orgName;
1.3 cvs 756: Document doc;
1.67 cvs 757: STRING newName;
758: STRING docName;
759: STRING otherPath;
1.3 cvs 760: #endif /* __STDC__ */
761: {
1.67 cvs 762: STRING basename;
763: CHAR_T tempOrgName[MAX_LENGTH];
764: STRING ptr;
765: CHAR_T used_sep;
766: int length;
1.66 cvs 767: ThotBool check;
1.5 cvs 768:
1.44 cvs 769: # ifdef _WINDOWS
770: int ndx;
771: # endif /* _WINDOWS */
772:
1.5 cvs 773: if (!newName || !docName)
774: return;
1.18 cvs 775:
1.32 cvs 776: if (doc != 0)
1.53 cvs 777: basename = GetBaseURL (doc);
778: else if (otherPath != NULL)
779: basename = TtaStrdup (otherPath);
1.32 cvs 780: else
1.53 cvs 781: basename = NULL;
1.32 cvs 782:
1.18 cvs 783: /*
1.31 cvs 784: * Clean orgName
785: * Make sure we have a complete orgName, without any leading or trailing
786: * white spaces, or trailinbg new lines
787: */
1.5 cvs 788: ptr = orgName;
1.18 cvs 789: /* skip leading white space and new line characters */
1.67 cvs 790: while ((*ptr == SPACE || *ptr == EOL) && *ptr++ != EOS);
791: ustrncpy (tempOrgName, ptr, MAX_LENGTH -1);
1.39 cvs 792: tempOrgName[MAX_LENGTH -1] = EOS;
1.18 cvs 793: /*
1.31 cvs 794: * Make orgName a complete URL
795: * If the URL does not include a protocol, then try to calculate
796: * one using the doc's base element (if it exists),
797: */
1.53 cvs 798: if (tempOrgName[0] == EOS)
799: {
800: newName[0] = EOS;
801: TtaFreeMemory (basename);
802: return;
803: }
1.49 cvs 804:
805: /* clean trailing white space */
1.67 cvs 806: length = ustrlen (tempOrgName) - 1;
1.53 cvs 807: while (tempOrgName[length] == SPACE && tempOrgName[length] == EOL)
808: {
809: tempOrgName[length] = EOS;
810: length--;
811: }
1.50 cvs 812:
1.55 cvs 813: /* remove extra dot (which dot???) */
814: /* ugly, but faster than a strcmp */
1.67 cvs 815: if (tempOrgName[length] == TEXT('.')
816: && (length == 0 || tempOrgName[length-1] != TEXT('.')))
1.55 cvs 817: tempOrgName[length] = EOS;
1.50 cvs 818:
1.53 cvs 819: if (IsW3Path (tempOrgName))
820: {
821: /* the name is complete, go to the Sixth Step */
1.67 cvs 822: ustrcpy (newName, tempOrgName);
1.53 cvs 823: SimplifyUrl (&newName);
824: /* verify if the URL has the form "protocol://server:port" */
1.67 cvs 825: ptr = AmayaParseUrl (newName, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
826: if (ptr && !ustrcmp (ptr, newName)) /* it has this form, we complete it by adding a DIR_STR */
827: ustrcat (newName, URL_STR);
1.49 cvs 828:
1.53 cvs 829: if (ptr)
1.50 cvs 830: TtaFreeMemory (ptr);
1.53 cvs 831: }
832: else if ( basename == NULL)
833: /* the name is complete, go to the Sixth Step */
1.67 cvs 834: ustrcpy (newName, tempOrgName);
1.53 cvs 835: else
836: {
1.31 cvs 837: /* Calculate the absolute URL, using the base or document URL */
1.44 cvs 838: # ifdef _WINDOWS
1.53 cvs 839: if (!IsW3Path (basename))
840: {
1.67 cvs 841: length = ustrlen (tempOrgName);
1.53 cvs 842: for (ndx = 0; ndx < length; ndx++)
1.67 cvs 843: if (tempOrgName [ndx] == TEXT('/'))
844: tempOrgName [ndx] = TEXT('\\');
1.53 cvs 845: }
1.44 cvs 846: # endif /* _WINDOWS */
1.25 cvs 847: ptr = AmayaParseUrl (tempOrgName, basename, AMAYA_PARSE_ALL);
1.53 cvs 848: if (ptr)
849: {
850: SimplifyUrl (&ptr);
1.67 cvs 851: ustrcpy (newName, ptr);
1.53 cvs 852: TtaFreeMemory (ptr);
853: }
854: else
855: newName[0] = EOS;
856: }
1.36 cvs 857:
858: TtaFreeMemory (basename);
1.18 cvs 859: /*
1.31 cvs 860: * Prepare the docname that will refer to this ressource in the
861: * .amaya directory. If the new URL finishes on DIR_SEP, then use
862: * noname.html as a default ressource name
1.18 cvs 863: */
1.53 cvs 864: if (newName[0] != EOS)
865: {
1.67 cvs 866: length = ustrlen (newName) - 1;
1.53 cvs 867: if (newName[length] == URL_SEP || newName[length] == DIR_SEP)
868: {
869: used_sep = newName[length];
870: check = TRUE;
871: while (check)
872: {
1.50 cvs 873: length--;
874: while (length >= 0 && newName[length] != used_sep)
1.53 cvs 875: length--;
1.67 cvs 876: if (!ustrncmp (&newName[length+1], TEXT(".."), 2))
1.53 cvs 877: {
878: newName[length+1] = EOS;
879: /* remove also previous directory */
880: length--;
881: while (length >= 0 && newName[length] != used_sep)
882: length--;
1.67 cvs 883: if (ustrncmp (&newName[length+1], TEXT("//"), 2))
1.53 cvs 884: /* don't remove server name */
1.50 cvs 885: newName[length+1] = EOS;
1.53 cvs 886: }
1.67 cvs 887: else if (!ustrncmp (&newName[length+1], TEXT("."), 1))
1.53 cvs 888: newName[length+1] = EOS;
1.50 cvs 889: else
1.53 cvs 890: check = FALSE;
891: }
1.67 cvs 892: ustrcpy (docName, TEXT("noname.html"));
1.53 cvs 893: /* docname was not comprised inside the URL, so let's */
894: /* assign the default ressource name */
1.67 cvs 895: ustrcpy (docName, TEXT("noname.html"));
1.53 cvs 896: }
897: else
898: { /* docname is comprised inside the URL */
1.50 cvs 899: while (length >= 0 && newName[length] != URL_SEP && newName[length] != DIR_SEP)
1.53 cvs 900: length--;
901: if (length < 0)
1.67 cvs 902: ustrcpy (docName, newName);
1.53 cvs 903: else
1.67 cvs 904: ustrcpy (docName, &newName[length+1]);
1.53 cvs 905: }
906: }
907: else
908: docName[0] = EOS;
1.18 cvs 909: }
1.3 cvs 910:
1.4 cvs 911: /*----------------------------------------------------------------------
1.9 cvs 912: IsSameHost
1.4 cvs 913: ----------------------------------------------------------------------*/
1.3 cvs 914: #ifdef __STDC__
1.67 cvs 915: ThotBool IsSameHost (const STRING url1, const STRING url2)
1.3 cvs 916: #else /* __STDC__ */
1.67 cvs 917: ThotBool IsSameHost (url1, url2)
918: const STRING url1;
919: const STRING url2;
1.3 cvs 920: #endif /* __STDC__ */
921: {
1.67 cvs 922: STRING basename_ptr1, basename_ptr2;
923: ThotBool result;
1.3 cvs 924:
1.67 cvs 925: basename_ptr1 = AmayaParseUrl (url1, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
926: basename_ptr2 = AmayaParseUrl (url2, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
1.3 cvs 927:
1.67 cvs 928: if (ustrcmp (basename_ptr1, basename_ptr2))
1.8 cvs 929: result = FALSE;
1.5 cvs 930: else
1.8 cvs 931: result = TRUE;
1.3 cvs 932:
1.25 cvs 933: TtaFreeMemory (basename_ptr1);
934: TtaFreeMemory (basename_ptr2);
1.5 cvs 935: return (result);
1.3 cvs 936: }
937:
938:
1.4 cvs 939: /*----------------------------------------------------------------------
1.22 cvs 940: HasKnownFileSuffix
941: returns TRUE if path points to a file ending with a suffix.
942: ----------------------------------------------------------------------*/
943: #ifdef __STDC__
1.67 cvs 944: ThotBool HasKnownFileSuffix (const STRING path)
1.22 cvs 945: #else /* __STDC__ */
1.67 cvs 946: ThotBool HasKnownFileSuffix (path)
947: const STRING path;
1.22 cvs 948: #endif /* __STDC__ */
949: {
1.67 cvs 950: STRING root;
951: CHAR_T temppath[MAX_LENGTH];
952: CHAR_T suffix[MAX_LENGTH];
1.22 cvs 953:
1.67 cvs 954: if (!path || path[0] == EOS || path[ustrlen(path)] == DIR_SEP)
1.22 cvs 955: return (FALSE);
956:
1.67 cvs 957: root = AmayaParseUrl(path, _EMPTYSTR_, AMAYA_PARSE_PATH | AMAYA_PARSE_PUNCTUATION);
1.22 cvs 958:
959: if (root)
960: {
1.67 cvs 961: ustrcpy (temppath, root);
1.25 cvs 962: TtaFreeMemory (root);
1.22 cvs 963: /* Get the suffix */
964: ExtractSuffix (temppath, suffix);
965:
966: if( suffix[0] == EOS)
967: /* no suffix */
968: return (FALSE);
969:
970: /* Normalize the suffix */
971: ConvertToLowerCase (suffix);
972:
1.67 cvs 973: if (!ustrcmp (suffix, TEXT("gz")))
1.22 cvs 974: /* skip the compressed suffix */
975: {
976: ExtractSuffix (temppath, suffix);
977: if(suffix[0] == EOS)
978: /* no suffix */
979: return (FALSE);
980: /* Normalize the suffix */
981: ConvertToLowerCase (suffix);
982: }
983:
1.67 cvs 984: if (ustrcmp (suffix, TEXT("gif")) &&
985: ustrcmp (suffix, TEXT("xbm")) &&
986: ustrcmp (suffix, TEXT("xpm")) &&
987: ustrcmp (suffix, TEXT("jpg")) &&
988: ustrcmp (suffix, TEXT("pdf")) &&
989: ustrcmp (suffix, TEXT("png")) &&
990: ustrcmp (suffix, TEXT("tgz")) &&
991: ustrcmp (suffix, TEXT("xpg")) &&
992: ustrcmp (suffix, TEXT("xpd")) &&
993: ustrcmp (suffix, TEXT("ps")) &&
994: ustrcmp (suffix, TEXT("au")) &&
995: ustrcmp (suffix, TEXT("html")) &&
996: ustrcmp (suffix, TEXT("htm")) &&
997: ustrcmp (suffix, TEXT("shtml")) &&
998: ustrcmp (suffix, TEXT("xht")) &&
999: ustrcmp (suffix, TEXT("xhtm")) &&
1000: ustrcmp (suffix, TEXT("xhtml")) &&
1001: ustrcmp (suffix, TEXT("txt")) &&
1002: ustrcmp (suffix, TEXT("css")) &&
1003: ustrcmp (suffix, TEXT("eps")))
1.22 cvs 1004: return (FALSE);
1005: else
1006: return (TRUE);
1007: }
1008: else
1009: return (FALSE);
1010: }
1011:
1012:
1013: /*----------------------------------------------------------------------
1.24 cvs 1014: ChopURL
1015: Gives back a URL no longer than MAX_PRINT_URL_LENGTH chars (outputURL).
1016: If inputURL is bigger than that size, outputURL receives
1017: MAX_PRINT_URL_LENGTH / 2 chars from the beginning of inputURL, "...",
1018: and MAX_PRINT_URL_LENGTH / 2 chars from the end of inputURL.
1019: If inputURL is not longer than MAX_PRINT_URL_LENGTH chars, it gets
1020: copied into outputURL.
1021: N.B.: outputURL must point to a memory block of MAX_PRINT_URL_LENGTH
1022: chars.
1023: ----------------------------------------------------------------------*/
1024: #ifdef __STDC__
1.34 cvs 1025: void ChopURL (char *outputURL, const char *inputURL)
1.24 cvs 1026: #else
1027: void ChopURL (outputURL, inputURL)
1.34 cvs 1028: char *outputURL;
1029: const char *inputURL;
1.24 cvs 1030: #endif
1.22 cvs 1031:
1.24 cvs 1032: {
1033: int len;
1.9 cvs 1034:
1.24 cvs 1035: len = strlen (inputURL);
1036: if (len <= MAX_PRINT_URL_LENGTH)
1.29 cvs 1037: strcpy (outputURL, inputURL);
1.24 cvs 1038: else
1039: /* make a truncated urlName on the status window */
1040: {
1041: strncpy (outputURL, inputURL, MAX_PRINT_URL_LENGTH / 2);
1042: outputURL [MAX_PRINT_URL_LENGTH / 2] = EOS;
1043: strcat (outputURL, "...");
1044: strcat (outputURL, &(inputURL[len - MAX_PRINT_URL_LENGTH / 2 ]));
1045: }
1.25 cvs 1046: }
1047:
1048:
1049: /*----------------------------------------------------------------------
1050: scan
1.47 cvs 1051: Scan a filename for its constituents
1.25 cvs 1052: -----------------------------------
1053:
1054: On entry,
1055: name points to a document name which may be incomplete.
1056: On exit,
1057: absolute or relative may be nonzero (but not both).
1058: host, fragment and access may be nonzero if they were specified.
1059: Any which are nonzero point to zero terminated strings.
1060: ----------------------------------------------------------------------*/
1061: #ifdef __STDC__
1.67 cvs 1062: static void scan (STRING name, HTURI * parts)
1.25 cvs 1063: #else /* __STDC__ */
1064: static void scan (name, parts)
1.67 cvs 1065: STRING name;
1066: HTURI *parts;
1.25 cvs 1067:
1068: #endif /* __STDC__ */
1069: {
1.67 cvs 1070: STRING p;
1071: STRING after_access = name;
1.32 cvs 1072:
1.43 cvs 1073: memset (parts, '\0', sizeof (HTURI));
1.28 cvs 1074: /* Look for fragment identifier */
1.67 cvs 1075: if ((p = ustrchr(name, TEXT('#'))) != NULL)
1.28 cvs 1076: {
1.67 cvs 1077: *p++ = TEXT('\0');
1.28 cvs 1078: parts->fragment = p;
1.25 cvs 1079: }
1080:
1.28 cvs 1081: for (p=name; *p; p++)
1082: {
1.67 cvs 1083: if (*p == URL_SEP || *p == DIR_SEP || *p == TEXT('#') || *p == TEXT('?'))
1.28 cvs 1084: break;
1.67 cvs 1085: if (*p == TEXT(':'))
1.28 cvs 1086: {
1087: *p = 0;
1088: parts->access = after_access; /* Scheme has been specified */
1089:
1090: /* The combination of gcc, the "-O" flag and the HP platform is
1091: unhealthy. The following three lines is a quick & dirty fix, but is
1092: not recommended. Rather, turn off "-O". */
1093:
1094: /* after_access = p;*/
1095: /* while (*after_access == 0)*/
1096: /* after_access++;*/
1097: after_access = p+1;
1.67 cvs 1098: if (!ustrcasecmp(TEXT("URL"), parts->access))
1.28 cvs 1099: /* Ignore IETF's URL: pre-prefix */
1100: parts->access = NULL;
1101: else
1.25 cvs 1102: break;
1103: }
1104: }
1105:
1106: p = after_access;
1.43 cvs 1107: if (*p == URL_SEP || *p == DIR_SEP)
1.28 cvs 1108: {
1.43 cvs 1109: if (p[1] == URL_SEP)
1.28 cvs 1110: {
1.25 cvs 1111: parts->host = p+2; /* host has been specified */
1.28 cvs 1112: *p = 0; /* Terminate access */
1113: /* look for end of host name if any */
1.67 cvs 1114: p = ustrchr (parts->host, URL_SEP);
1.28 cvs 1115: if (p)
1116: {
1.43 cvs 1117: *p = EOS; /* Terminate host */
1.25 cvs 1118: parts->absolute = p+1; /* Root has been found */
1.28 cvs 1119: }
1120: }
1121: else
1122: /* Root found but no host */
1123: parts->absolute = p+1;
1124: }
1125: else
1126: {
1.25 cvs 1127: parts->relative = (*after_access) ? after_access : 0; /* zero for "" */
1.28 cvs 1128: }
1.25 cvs 1129: }
1130:
1131:
1132: /*----------------------------------------------------------------------
1.28 cvs 1133: AmayaParseUrl: parse a Name relative to another name
1134:
1135: This returns those parts of a name which are given (and requested)
1136: substituting bits from the related name where necessary.
1.25 cvs 1137:
1.28 cvs 1138: On entry,
1.25 cvs 1139: aName A filename given
1140: relatedName A name relative to which aName is to be parsed. Give
1141: it an empty string if aName is absolute.
1142: wanted A mask for the bits which are wanted.
1143:
1.28 cvs 1144: On exit,
1.25 cvs 1145: returns A pointer to a malloc'd string which MUST BE FREED
1146: ----------------------------------------------------------------------*/
1147: #ifdef __STDC__
1.67 cvs 1148: STRING AmayaParseUrl (const STRING aName, STRING relatedName, int wanted)
1.25 cvs 1149: #else /* __STDC__ */
1.67 cvs 1150: STRING AmayaParseUrl (aName, relatedName, wanted)
1151: const STRING aName;
1152: STRING relatedName;
1.28 cvs 1153: int wanted;
1.25 cvs 1154:
1155: #endif /* __STDC__ */
1156: {
1.67 cvs 1157: STRING return_value;
1158: CHAR_T result[MAX_LENGTH];
1159: CHAR_T name[MAX_LENGTH];
1160: CHAR_T rel[MAX_LENGTH];
1161: STRING p, access;
1.29 cvs 1162: HTURI given, related;
1163: int len;
1.67 cvs 1164: CHAR_T used_sep;
1165: STRING used_str;
1.32 cvs 1166:
1.67 cvs 1167: if (ustrchr (aName, DIR_SEP) || ustrchr (relatedName, DIR_SEP))
1.33 cvs 1168: {
1.42 cvs 1169: used_str = DIR_STR;
1170: used_sep = DIR_SEP;
1.33 cvs 1171: }
1.32 cvs 1172: else
1.33 cvs 1173: {
1.42 cvs 1174: used_str = URL_STR;
1175: used_sep = URL_SEP;
1.33 cvs 1176: }
1.32 cvs 1177:
1.29 cvs 1178: /* Make working copies of input strings to cut up: */
1179: return_value = NULL;
1180: result[0] = 0; /* Clear string */
1.67 cvs 1181: ustrcpy (name, aName);
1.29 cvs 1182: if (relatedName != NULL)
1.67 cvs 1183: ustrcpy (rel, relatedName);
1.29 cvs 1184: else
1185: relatedName[0] = EOS;
1186:
1187: scan (name, &given);
1188: scan (rel, &related);
1189: access = given.access ? given.access : related.access;
1190: if (wanted & AMAYA_PARSE_ACCESS)
1191: if (access)
1192: {
1.67 cvs 1193: ustrcat (result, access);
1.29 cvs 1194: if(wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1195: ustrcat (result, TEXT(":"));
1.29 cvs 1196: }
1197:
1198: if (given.access && related.access)
1199: /* If different, inherit nothing. */
1.67 cvs 1200: if (ustrcmp (given.access, related.access) != 0)
1.29 cvs 1201: {
1202: related.host = 0;
1203: related.absolute = 0;
1204: related.relative = 0;
1205: related.fragment = 0;
1206: }
1207:
1208: if (wanted & AMAYA_PARSE_HOST)
1209: if(given.host || related.host)
1210: {
1211: if(wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1212: ustrcat (result, TEXT("//"));
1213: ustrcat (result, given.host ? given.host : related.host);
1.29 cvs 1214: }
1215:
1216: if (given.host && related.host)
1217: /* If different hosts, inherit no path. */
1.67 cvs 1218: if (ustrcmp (given.host, related.host) != 0)
1.29 cvs 1219: {
1220: related.absolute = 0;
1221: related.relative = 0;
1222: related.fragment = 0;
1223: }
1224:
1225: if (wanted & AMAYA_PARSE_PATH)
1226: {
1227: if (given.absolute)
1228: {
1229: /* All is given */
1230: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1231: ustrcat (result, used_str);
1232: ustrcat (result, given.absolute);
1.25 cvs 1233: }
1.29 cvs 1234: else if (related.absolute)
1235: {
1236: /* Adopt path not name */
1.67 cvs 1237: ustrcat (result, used_str);
1238: ustrcat (result, related.absolute);
1.29 cvs 1239: if (given.relative)
1240: {
1241: /* Search part? */
1.67 cvs 1242: p = ustrchr (result, TEXT('?'));
1.29 cvs 1243: if (!p)
1.67 cvs 1244: p=result+ustrlen(result)-1;
1.33 cvs 1245: for (; *p!=used_sep; p--); /* last / */
1.29 cvs 1246: /* Remove filename */
1247: p[1]=0;
1248: /* Add given one */
1.67 cvs 1249: ustrcat (result, given.relative);
1.25 cvs 1250: }
1251: }
1.29 cvs 1252: else if (given.relative)
1253: /* what we've got */
1.67 cvs 1254: ustrcat (result, given.relative);
1.29 cvs 1255: else if (related.relative)
1.67 cvs 1256: ustrcat (result, related.relative);
1.29 cvs 1257: else
1258: /* No inheritance */
1.67 cvs 1259: ustrcat (result, used_str);
1.25 cvs 1260: }
1.29 cvs 1261:
1262: if (wanted & AMAYA_PARSE_ANCHOR)
1263: if (given.fragment || related.fragment)
1264: {
1265: if (given.absolute && given.fragment)
1266: {
1267: /*Fixes for relURLs...*/
1268: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1269: ustrcat (result, TEXT("#"));
1270: ustrcat (result, given.fragment);
1.29 cvs 1271: }
1272: else if (!(given.absolute) && !(given.fragment))
1.67 cvs 1273: ustrcat (result, _EMPTYSTR_);
1.29 cvs 1274: else
1275: {
1276: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.67 cvs 1277: ustrcat (result, TEXT("#"));
1278: ustrcat (result, given.fragment ? given.fragment : related.fragment);
1.29 cvs 1279: }
1280: }
1.67 cvs 1281: len = ustrlen (result);
1282: if ((return_value = TtaAllocString (len + 1)) != NULL)
1283: ustrcpy (return_value, result);
1.29 cvs 1284: return (return_value); /* exactly the right length */
1.25 cvs 1285: }
1286:
1287: /*----------------------------------------------------------------------
1288: HTCanon
1289: Canonicalizes the URL in the following manner starting from the host
1290: pointer:
1291:
1292: 1) The host name is converted to lowercase
1293: 2) Chop off port if `:80' (http), `:70' (gopher), or `:21' (ftp)
1294:
1295: Return: OK The position of the current path part of the URL
1296: which might be the old one or a new one.
1297:
1298: ----------------------------------------------------------------------*/
1299: #ifdef __STDC__
1.67 cvs 1300: static STRING HTCanon (STRING* filename, STRING host)
1.25 cvs 1301: #else /* __STDC__ */
1.67 cvs 1302: static STRING HTCanon (filename, host)
1303: STRING *filename;
1304: STRING host;
1.25 cvs 1305: #endif /* __STDC__ */
1306: {
1.67 cvs 1307: STRING newname = NULL;
1308: STRING port;
1309: STRING strptr;
1310: STRING path;
1311: STRING access = host-3;
1312: CHAR_T used_sep;
1.32 cvs 1313:
1314:
1.67 cvs 1315: if (*filename && ustrchr (*filename, URL_SEP))
1.33 cvs 1316: {
1317: used_sep = URL_SEP;
1318: }
1319: else
1320: {
1321: used_sep = DIR_SEP;
1322: }
1.32 cvs 1323:
1.33 cvs 1324: while (access>*filename && *(access-1)!= used_sep) /* Find access method */
1.25 cvs 1325: access--;
1.67 cvs 1326: if ((path = ustrchr(host, used_sep)) == NULL) /* Find path */
1327: path = host + ustrlen(host);
1328: if ((strptr = ustrchr(host, TEXT('@'))) != NULL && strptr<path) /* UserId */
1.25 cvs 1329: host = strptr;
1.67 cvs 1330: if ((port = ustrchr(host, TEXT(':'))) != NULL && port>path) /* Port number */
1.25 cvs 1331: port = NULL;
1332:
1333: strptr = host; /* Convert to lower-case */
1.33 cvs 1334: while (strptr<path)
1335: {
1.25 cvs 1336: *strptr = tolower(*strptr);
1337: strptr++;
1.33 cvs 1338: }
1.25 cvs 1339:
1340: /* Does the URL contain a full domain name? This also works for a
1341: numerical host name. The domain name is already made lower-case
1342: and without a trailing dot. */
1343: {
1.67 cvs 1344: STRING dot = port ? port : path;
1345: if (dot > *filename && *--dot == TEXT('.'))
1.33 cvs 1346: {
1.67 cvs 1347: STRING orig=dot, dest=dot+1;
1.33 cvs 1348: while((*orig++ = *dest++));
1349: if (port) port--;
1350: path--;
1.25 cvs 1351: }
1352: }
1353: /* Chop off port if `:', `:80' (http), `:70' (gopher), or `:21' (ftp) */
1.33 cvs 1354: if (port)
1355: {
1356: if (!*(port+1) || *(port+1)==used_sep)
1357: {
1358: if (!newname)
1359: {
1.67 cvs 1360: STRING orig=port, dest=port+1;
1.25 cvs 1361: while((*orig++ = *dest++));
1.33 cvs 1362: }
1363: }
1.67 cvs 1364: else if ((!ustrncmp(access, TEXT("http"), 4) &&
1365: (*(port+1) == TEXT('8') && *(port+2) == TEXT('0') && (*(port+3) == used_sep || !*(port + 3)))) ||
1366: (!ustrncmp (access, TEXT("gopher"), 6) &&
1367: (*(port+1) == TEXT('7') && *(port+2) == TEXT('0') && (*(port+3) == used_sep || !*(port+3)))) ||
1368: (!ustrncmp(access, TEXT("ftp"), 3) &&
1369: (*(port+1) == TEXT('2') && *(port + 2) == TEXT('1') && (*(port+3) == used_sep || !*(port+3))))) {
1.33 cvs 1370: if (!newname)
1371: {
1.67 cvs 1372: STRING orig=port, dest=port+3;
1.33 cvs 1373: while((*orig++ = *dest++));
1374: /* Update path position, Henry Minsky */
1375: path -= 3;
1.25 cvs 1376: }
1.33 cvs 1377: }
1378: else if (newname)
1.67 cvs 1379: ustrncat(newname, port, (int) (path-port));
1.33 cvs 1380: }
1.25 cvs 1381:
1.33 cvs 1382: if (newname)
1383: {
1.67 cvs 1384: STRING newpath = newname + ustrlen (newname);
1385: ustrcat(newname, path);
1.25 cvs 1386: path = newpath;
1.28 cvs 1387: /* Free old copy */
1388: TtaFreeMemory(*filename);
1.25 cvs 1389: *filename = newname;
1.33 cvs 1390: }
1.25 cvs 1391: return path;
1392: }
1393:
1394:
1395: /*----------------------------------------------------------------------
1.29 cvs 1396: SimplifyUrl: simplify a URI
1.32 cvs 1397: A URI is allowed to contain the sequence xxx/../ which may be
1398: replaced by "" , and the sequence "/./" which may be replaced by DIR_STR.
1.28 cvs 1399: Simplification helps us recognize duplicate URIs.
1.25 cvs 1400:
1.28 cvs 1401: Thus, /etc/junk/../fred becomes /etc/fred
1402: /etc/junk/./fred becomes /etc/junk/fred
1.25 cvs 1403:
1.28 cvs 1404: but we should NOT change
1405: http://fred.xxx.edu/../..
1.25 cvs 1406:
1407: or ../../albert.html
1408:
1.28 cvs 1409: In order to avoid empty URLs the following URLs become:
1.25 cvs 1410:
1411: /fred/.. becomes /fred/..
1412: /fred/././.. becomes /fred/..
1413: /fred/.././junk/.././ becomes /fred/..
1414:
1.28 cvs 1415: If more than one set of `://' is found (several proxies in cascade) then
1416: only the part after the last `://' is simplified.
1.25 cvs 1417:
1.28 cvs 1418: Returns: A string which might be the old one or a new one.
1.25 cvs 1419: ----------------------------------------------------------------------*/
1420: #ifdef __STDC__
1.67 cvs 1421: void SimplifyUrl (STRING* url)
1.25 cvs 1422: #else /* __STDC__ */
1.29 cvs 1423: void SimplifyUrl (url)
1.67 cvs 1424: STRING *url;
1.25 cvs 1425: #endif /* __STDC__ */
1426: {
1.67 cvs 1427: STRING path, p;
1428: STRING newptr, access;
1429: STRING orig, dest, end;
1.28 cvs 1430:
1.67 cvs 1431: CHAR_T used_sep;
1.32 cvs 1432:
1433:
1.28 cvs 1434: if (!url || !*url)
1435: return;
1436:
1.67 cvs 1437: if (ustrchr (*url, URL_SEP))
1.33 cvs 1438: {
1439: used_sep = URL_SEP;
1440: }
1.32 cvs 1441: else
1.33 cvs 1442: {
1443: used_sep = DIR_SEP;
1444: }
1.32 cvs 1445:
1.28 cvs 1446: /* Find any scheme name */
1.67 cvs 1447: if ((path = ustrstr(*url, TEXT("://"))) != NULL)
1.33 cvs 1448: {
1449: /* Find host name */
1.28 cvs 1450: access = *url;
1451: while (access<path && (*access=tolower(*access)))
1452: access++;
1453: path += 3;
1.67 cvs 1454: while ((newptr = ustrstr(path, TEXT("://"))) != NULL)
1.28 cvs 1455: /* For proxies */
1456: path = newptr+3;
1457: /* We have a host name */
1458: path = HTCanon(url, path);
1.25 cvs 1459: }
1.67 cvs 1460: else if ((path = ustrstr(*url, TEXT(":/"))) != NULL)
1.28 cvs 1461: path += 2;
1462: else
1463: path = *url;
1.25 cvs 1464:
1.33 cvs 1465: if (*path == used_sep && *(path+1)==used_sep)
1.28 cvs 1466: /* Some URLs start //<foo> */
1467: path += 1;
1.67 cvs 1468: else if (!ustrncmp(path, TEXT("news:"), 5))
1.28 cvs 1469: {
1.67 cvs 1470: newptr = ustrchr(path+5, TEXT('@'));
1.28 cvs 1471: if (!newptr)
1472: newptr = path + 5;
1473: while (*newptr)
1474: {
1475: /* Make group or host lower case */
1476: *newptr = tolower (*newptr);
1477: newptr++;
1.25 cvs 1478: }
1.28 cvs 1479: /* Doesn't need to do any more */
1480: return;
1.25 cvs 1481: }
1.28 cvs 1482:
1483: if ((p = path))
1484: {
1.67 cvs 1485: if (!((end = ustrchr (path, TEXT(';'))) || (end = ustrchr (path, TEXT('?'))) ||
1486: (end = ustrchr (path, TEXT('#')))))
1487: end = path + ustrlen (path);
1.28 cvs 1488:
1489: /* Parse string second time to simplify */
1490: p = path;
1491: while (p < end)
1492: {
1.33 cvs 1493: if (*p==used_sep)
1.28 cvs 1494: {
1.67 cvs 1495: if (p > *url && *(p+1) == TEXT('.') && (*(p+2) == used_sep || !*(p+2)))
1.28 cvs 1496: {
1497: orig = p + 1;
1.33 cvs 1498: dest = (*(p+2)!=used_sep) ? p+2 : p+3;
1.52 cvs 1499: while ((*orig++ = *dest++)); /* Remove a used_sep and a dot*/
1.28 cvs 1500: end = orig - 1;
1501: }
1.67 cvs 1502: else if (*(p+1) == TEXT('.') && *(p+2) == TEXT('.') && (*(p+3) == used_sep || !*(p+3)))
1.28 cvs 1503: {
1504: newptr = p;
1.52 cvs 1505: while (newptr>path && *--newptr!=used_sep); /* prev used_sep */
1506: if (*newptr == used_sep)
1507: orig = newptr + 1;
1.28 cvs 1508: else
1.52 cvs 1509: orig = newptr;
1510:
1511: dest = (*(p+3) != used_sep) ? p+3 : p+4;
1512: while ((*orig++ = *dest++)); /* Remove /xxx/.. */
1513: end = orig-1;
1514: /* Start again with prev slash */
1515: p = newptr;
1.28 cvs 1516: }
1.33 cvs 1517: else if (*(p+1) == used_sep)
1.28 cvs 1518: {
1.33 cvs 1519: while (*(p+1) == used_sep)
1.28 cvs 1520: {
1521: orig = p;
1522: dest = p + 1;
1523: while ((*orig++ = *dest++)); /* Remove multiple /'s */
1524: end = orig-1;
1525: }
1526: }
1527: else
1.25 cvs 1528: p++;
1.28 cvs 1529: }
1530: else
1531: p++;
1.25 cvs 1532: }
1533: }
1.51 cvs 1534:
1535: /*
1536: ** Check for host/../.. kind of things
1537: */
1.67 cvs 1538: if (*path == used_sep && *(path+1) == TEXT('.') && *(path+2) == TEXT('.') && (!*(path+3) || *(path+3) == used_sep))
1.51 cvs 1539: *(path+1) = EOS;
1540:
1.28 cvs 1541: return;
1542: }
1543:
1544:
1545: /*----------------------------------------------------------------------
1546: NormalizeFile normalizes local names.
1547: Return TRUE if target and src differ.
1548: ----------------------------------------------------------------------*/
1549: #ifdef __STDC__
1.67 cvs 1550: ThotBool NormalizeFile (STRING src, STRING target)
1.28 cvs 1551: #else
1.67 cvs 1552: ThotBool NormalizeFile (src, target)
1553: STRING src;
1554: STRING target;
1.28 cvs 1555:
1556: #endif
1557: {
1.67 cvs 1558: STRING s;
1.66 cvs 1559: ThotBool change;
1.28 cvs 1560:
1.54 cvs 1561: change = FALSE;
1.67 cvs 1562: if (ustrncmp (src, TEXT("file:"), 5) == 0)
1.28 cvs 1563: {
1564: /* remove the prefix file: */
1565: if (src[5] == EOS)
1.67 cvs 1566: ustrcpy (target, DIR_STR);
1567: else if (src[0] == TEXT('~'))
1.28 cvs 1568: {
1569: /* replace ~ */
1.67 cvs 1570: s = TtaGetEnvString (TEXT("HOME"));
1571: ustrcpy (target, s);
1572: ustrcat (target, &src[5]);
1.28 cvs 1573: }
1574: else
1.67 cvs 1575: ustrcpy (target, &src[5]);
1.54 cvs 1576: change = TRUE;
1.28 cvs 1577: }
1.53 cvs 1578: # ifndef _WINDOWS
1.67 cvs 1579: else if (src[0] == TEXT('~'))
1.53 cvs 1580: {
1581: /* replace ~ */
1582: s = (char *) TtaGetEnvString ("HOME");
1583: strcpy (target, s);
1584: if (src[1] != DIR_SEP)
1585: strcat (target, DIR_STR);
1586: strcat (target, &src[1]);
1.54 cvs 1587: change = TRUE;
1.53 cvs 1588: }
1589: # endif /* _WINDOWS */
1.28 cvs 1590: else
1.67 cvs 1591: ustrcpy (target, src);
1.28 cvs 1592:
1593: /* remove /../ and /./ */
1.29 cvs 1594: SimplifyUrl (&target);
1.54 cvs 1595: if (!change)
1.67 cvs 1596: change = ustrcmp (src, target);
1.28 cvs 1597: return (change);
1.25 cvs 1598: }
1599:
1.28 cvs 1600:
1.25 cvs 1601: /*----------------------------------------------------------------------
1.31 cvs 1602: MakeRelativeURL: make relative name
1.25 cvs 1603:
1.28 cvs 1604: This function creates and returns a string which gives an expression of
1605: one address as related to another. Where there is no relation, an absolute
1606: address is retured.
1.25 cvs 1607:
1.28 cvs 1608: On entry,
1.25 cvs 1609: Both names must be absolute, fully qualified names of nodes
1610: (no fragment bits)
1611:
1.28 cvs 1612: On exit,
1.25 cvs 1613: The return result points to a newly allocated name which, if
1614: parsed by AmayaParseUrl relative to relatedName, will yield aName.
1615: The caller is responsible for freeing the resulting name later.
1616: ----------------------------------------------------------------------*/
1617: #ifdef __STDC__
1.67 cvs 1618: STRING MakeRelativeURL (STRING aName, STRING relatedName)
1.25 cvs 1619: #else /* __STDC__ */
1.67 cvs 1620: STRING MakeRelativeURL (aName, relatedName)
1621: STRING aName;
1622: STRING relatedName;
1.25 cvs 1623: #endif /* __STDC__ */
1624: {
1.67 cvs 1625: STRING return_value;
1626: CHAR_T result[MAX_LENGTH];
1627: STRING p;
1628: STRING q;
1629: STRING after_access;
1630: STRING last_slash = NULL;
1.29 cvs 1631: int slashes, levels, len;
1632:
1.44 cvs 1633: # ifdef _WINDOWS
1634: int ndx;
1635: # endif /* _WINDOWS */
1636:
1.29 cvs 1637: if (aName == NULL || relatedName == NULL)
1638: return (NULL);
1639:
1640: slashes = 0;
1641: after_access = NULL;
1642: p = aName;
1643: q = relatedName;
1644: for (; *p && (*p == *q); p++, q++)
1.27 cvs 1645: {
1646: /* Find extent of match */
1.67 cvs 1647: if (*p == TEXT(':'))
1.29 cvs 1648: after_access = p + 1;
1.28 cvs 1649: if (*p == DIR_SEP)
1.27 cvs 1650: {
1.29 cvs 1651: /* memorize the last slash position and count them */
1.27 cvs 1652: last_slash = p;
1653: slashes++;
1.25 cvs 1654: }
1655: }
1656:
1.31 cvs 1657: /* q, p point to the first non-matching character or zero */
1658: if (*q == EOS)
1659: {
1660: /* New name is a subset of the related name */
1661: /* exactly the right length */
1.67 cvs 1662: len = ustrlen (p);
1663: if ((return_value = TtaAllocString (len + 1)) != NULL)
1664: ustrcpy (return_value, p);
1.31 cvs 1665: }
1666: else if ((slashes < 2 && after_access == NULL)
1667: || (slashes < 3 && after_access != NULL))
1668: {
1669: /* Two names whitout common path */
1670: /* exactly the right length */
1.67 cvs 1671: len = ustrlen (aName);
1672: if ((return_value = TtaAllocString (len + 1)) != NULL)
1673: ustrcpy (return_value, aName);
1.31 cvs 1674: }
1675: else
1676: {
1677: /* Some path in common */
1.67 cvs 1678: if (slashes == 3 && ustrncmp (aName, TEXT("http:"), 5) == 0)
1.31 cvs 1679: /* just the same server */
1.67 cvs 1680: ustrcpy (result, last_slash);
1.31 cvs 1681: else
1682: {
1683: levels= 0;
1.67 cvs 1684: for (; *q && *q != TEXT('#') && *q != TEXT(';') && *q != TEXT('?'); q++)
1.31 cvs 1685: if (*q == DIR_SEP)
1686: levels++;
1687:
1.52 cvs 1688: result[0] = EOS;
1.31 cvs 1689: for (;levels; levels--)
1.67 cvs 1690: ustrcat (result, TEXT("../"));
1691: ustrcat (result, last_slash+1);
1.31 cvs 1692: }
1.52 cvs 1693:
1694: if (!*result)
1.67 cvs 1695: ustrcat (result, TEXT("./"));
1.52 cvs 1696:
1.31 cvs 1697: /* exactly the right length */
1.67 cvs 1698: len = ustrlen (result);
1699: if ((return_value = TtaAllocString (len + 1)) != NULL)
1700: ustrcpy (return_value, result);
1.52 cvs 1701:
1.25 cvs 1702: }
1.44 cvs 1703: # ifdef _WINDOWS
1.67 cvs 1704: len = ustrlen (return_value);
1.44 cvs 1705: for (ndx = 0; ndx < len; ndx ++)
1.67 cvs 1706: if (return_value[ndx] == TEXT('\\'))
1707: return_value[ndx] = TEXT('/') ;
1.44 cvs 1708: # endif /* _WINDOWS */
1.29 cvs 1709: return (return_value);
1.24 cvs 1710: }
1.35 cvs 1711:
1712:
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