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