Annotation of Amaya/amaya/AHTURLTools.c, revision 1.52
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:
1.4 cvs 177: /*----------------------------------------------------------------------
1.9 cvs 178: IsHTMLName
179: returns TRUE if path points to an HTML resource.
1.4 cvs 180: ----------------------------------------------------------------------*/
1.3 cvs 181: #ifdef __STDC__
1.34 cvs 182: boolean IsHTMLName (const char *path)
1.3 cvs 183: #else /* __STDC__ */
184: boolean IsHTMLName (path)
1.34 cvs 185: const char *path;
1.3 cvs 186: #endif /* __STDC__ */
187: {
1.5 cvs 188: char temppath[MAX_LENGTH];
189: char suffix[MAX_LENGTH];
190: char nsuffix[MAX_LENGTH];
191: int i;
192:
193: if (!path)
1.37 cvs 194: return (FALSE);
1.5 cvs 195:
196: strcpy (temppath, path);
197: ExtractSuffix (temppath, suffix);
198:
199: /* Normalize the suffix */
200: i = 0;
1.39 cvs 201: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 202: {
1.25 cvs 203: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 204: i++;
205: }
1.5 cvs 206: nsuffix[i] = EOS;
1.39 cvs 207: if ((!strcmp (nsuffix, "html")) ||
208: (!strcmp (nsuffix, "htm")) ||
209: (!strcmp (nsuffix, "shtml")))
210: return (TRUE);
1.22 cvs 211: else if (!strcmp (nsuffix, "gz"))
1.13 cvs 212: {
1.39 cvs 213: /* take into account compressed files */
1.13 cvs 214: ExtractSuffix (temppath, suffix);
215: /* Normalize the suffix */
216: i = 0;
1.39 cvs 217: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 218: {
1.25 cvs 219: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 220: i++;
221: }
222: nsuffix[i] = EOS;
1.39 cvs 223: if ((!strcmp (nsuffix, "html")) ||
224: (!strcmp (nsuffix, "htm")) ||
225: (!strcmp (nsuffix, "shtml")))
226: return (TRUE);
227: else
1.13 cvs 228: return (FALSE);
229: }
230: else
1.39 cvs 231: return (FALSE);
1.3 cvs 232: }
233:
1.4 cvs 234: /*----------------------------------------------------------------------
1.9 cvs 235: IsImageName
236: returns TRUE if path points to an image resource.
1.4 cvs 237: ----------------------------------------------------------------------*/
1.3 cvs 238: #ifdef __STDC__
1.34 cvs 239: boolean IsImageName (const char *path)
1.3 cvs 240: #else /* __STDC__ */
241: boolean IsImageName (path)
1.34 cvs 242: const char *path;
1.3 cvs 243: #endif /* __STDC__ */
244: {
1.5 cvs 245: char temppath[MAX_LENGTH];
246: char suffix[MAX_LENGTH];
247: char nsuffix[MAX_LENGTH];
248: int i;
249:
250: if (!path)
1.13 cvs 251: return (FALSE);
1.5 cvs 252:
253: strcpy (temppath, path);
254: ExtractSuffix (temppath, suffix);
255:
256: /* Normalize the suffix */
257: i = 0;
1.39 cvs 258: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 259: {
1.25 cvs 260: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 261: i++;
262: }
1.5 cvs 263: nsuffix[i] = EOS;
1.39 cvs 264: if ((!strcmp (nsuffix, "gif")) || (!strcmp (nsuffix, "xbm")) ||
265: (!strcmp (nsuffix, "xpm")) || (!strcmp (nsuffix, "jpg")) ||
266: (!strcmp (nsuffix, "png")) || (!strcmp (nsuffix, "au")))
267: return (TRUE);
268: return (FALSE);
1.3 cvs 269: }
270:
1.4 cvs 271: /*----------------------------------------------------------------------
1.9 cvs 272: IsTextName
1.4 cvs 273: ----------------------------------------------------------------------*/
1.3 cvs 274: #ifdef __STDC__
1.34 cvs 275: boolean IsTextName (const char *path)
1.3 cvs 276: #else /* __STDC__ */
277: boolean IsTextName (path)
1.34 cvs 278: const char *path;
1.3 cvs 279:
280: #endif /* __STDC__ */
281: {
1.5 cvs 282: char temppath[MAX_LENGTH];
283: char suffix[MAX_LENGTH];
284: char nsuffix[MAX_LENGTH];
285: int i;
286:
287: if (!path)
1.13 cvs 288: return (FALSE);
1.5 cvs 289:
290: strcpy (temppath, path);
291: ExtractSuffix (temppath, suffix);
292:
293: /* Normalize the suffix */
294: i = 0;
1.39 cvs 295: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.5 cvs 296: {
1.25 cvs 297: nsuffix[i] = tolower (suffix[i]);
1.5 cvs 298: i++;
299: }
300: nsuffix[i] = EOS;
301:
1.39 cvs 302: if ((!strcmp (nsuffix, "txt")) || (!strcmp (nsuffix, "dtd")))
1.13 cvs 303: return (TRUE);
1.22 cvs 304: else if (!strcmp (nsuffix, "gz"))
1.13 cvs 305: {
1.39 cvs 306: /* take into account compressed files */
1.13 cvs 307: ExtractSuffix (temppath, suffix);
308: /* Normalize the suffix */
309: i = 0;
1.39 cvs 310: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 311: {
1.25 cvs 312: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 313: i++;
314: }
315: nsuffix[i] = EOS;
1.39 cvs 316: if ((!strcmp (nsuffix, "txt")) || (!strcmp (nsuffix, "dtd")))
1.13 cvs 317: return (TRUE);
318: else
319: return (FALSE);
320: }
321: else
322: return (FALSE);
1.3 cvs 323: }
324:
1.4 cvs 325: /*----------------------------------------------------------------------
1.9 cvs 326: IsHTTPPath
327: returns TRUE if path is in fact an http URL.
1.4 cvs 328: ----------------------------------------------------------------------*/
1.3 cvs 329: #ifdef __STDC__
1.34 cvs 330: boolean IsHTTPPath (const char *path)
1.3 cvs 331: #else /* __STDC__ */
332: boolean IsHTTPPath (path)
1.34 cvs 333: const char *path;
1.3 cvs 334: #endif /* __STDC__ */
335: {
1.5 cvs 336: if (!path)
337: return FALSE;
1.3 cvs 338:
1.5 cvs 339: if (strncmp (path, "http:", 5) != 0)
340: return FALSE;
341: return TRUE;
1.3 cvs 342: }
343:
1.4 cvs 344: /*----------------------------------------------------------------------
1.9 cvs 345: IsWithParameters
346: returns TRUE if url has a concatenated query string.
1.4 cvs 347: ----------------------------------------------------------------------*/
1.3 cvs 348: #ifdef __STDC__
1.34 cvs 349: boolean IsWithParameters (const char *url)
1.3 cvs 350: #else /* __STDC__ */
1.9 cvs 351: boolean IsWithParameters (url)
1.34 cvs 352: const char *url;
1.3 cvs 353: #endif /* __STDC__ */
354: {
1.5 cvs 355: int i;
1.3 cvs 356:
1.9 cvs 357: if ((!url) || (url[0] == EOS))
1.5 cvs 358: return FALSE;
1.3 cvs 359:
1.9 cvs 360: i = strlen (url) - 1;
361: while (i > 0 && url[i--] != '?')
1.5 cvs 362: if (i < 0)
363: return FALSE;
1.3 cvs 364:
1.5 cvs 365: /* There is a parameter */
366: return TRUE;
1.3 cvs 367: }
368:
1.4 cvs 369: /*----------------------------------------------------------------------
1.9 cvs 370: IsW3Path
371: returns TRUE if path is in fact a URL.
1.4 cvs 372: ----------------------------------------------------------------------*/
1.3 cvs 373: #ifdef __STDC__
1.34 cvs 374: boolean IsW3Path (const char *path)
1.3 cvs 375: #else /* __STDC__ */
376: boolean IsW3Path (path)
1.34 cvs 377: const char *path;
1.3 cvs 378: #endif /* __STDC__ */
379: {
1.5 cvs 380: if ((strncmp (path, "http:", 5)) && (strncmp (path, "ftp:", 4)) &&
381: (strncmp (path, "telnet:", 7)) && (strncmp (path, "wais:", 5)) &&
382: (strncmp (path, "news:", 5)) && (strncmp (path, "gopher:", 7)) &&
383: (strncmp (path, "mailto:", 7)) && (strncmp (path, "archie:", 7)))
384: return FALSE;
385: return TRUE;
1.3 cvs 386: }
387:
1.4 cvs 388: /*----------------------------------------------------------------------
1.9 cvs 389: IsValidProtocol
390: returns true if the url protocol is supported by Amaya.
1.4 cvs 391: ----------------------------------------------------------------------*/
1.3 cvs 392: #ifdef __STDC__
1.34 cvs 393: boolean IsValidProtocol (const char *url)
1.3 cvs 394: #else /* __STDC__ */
1.9 cvs 395: boolean IsValidProtocol (url)
1.34 cvs 396: const char *url;
1.3 cvs 397: #endif /* __STDC__ */
398: {
1.26 cvs 399: if (!strncmp (url, "http:", 5))
1.22 cvs 400: /* experimental */
1.26 cvs 401: /*** || !strncmp (url, "ftp:", 4)) ***/
1.24 cvs 402: /*** || !strncmp (path, "news:", 5)***/
1.8 cvs 403: return (TRUE);
1.5 cvs 404: else
1.8 cvs 405: return (FALSE);
1.3 cvs 406: }
407:
1.31 cvs 408:
409: /*----------------------------------------------------------------------
410: GetBaseURL
411: normalizes orgName according to a base associated with doc, and
412: following the standard URL format rules.
413: The function returns the base used to solve relative URL and SRC:
414: - the base of the document,
415: - or the document path (without document name).
416: ----------------------------------------------------------------------*/
417: #ifdef __STDC__
418: char *GetBaseURL (Document doc)
419: #else /* __STDC__ */
420: char *GetBaseURL (doc)
421: Document doc;
422: #endif /* __STDC__ */
423: {
424: Element el;
425: ElementType elType;
426: AttributeType attrType;
427: Attribute attr;
428: char *ptr, *basename;
429: int length;
430:
431: basename = TtaGetMemory (MAX_LENGTH);
1.39 cvs 432: strncpy (basename, DocumentURLs[doc], MAX_LENGTH-1);
433: basename[MAX_LENGTH-1] = EOS;
1.31 cvs 434: length = MAX_LENGTH -1;
435: /* get the root element */
436: el = TtaGetMainRoot (doc);
437: /* search the BASE element */
438: elType.ElSSchema = TtaGetDocumentSSchema (doc);
439: elType.ElTypeNum = HTML_EL_BASE;
440: el = TtaSearchTypedElement (elType, SearchInTree, el);
441: if (el)
442: {
443: /* The document has a BASE element -> Get the HREF attribute */
444: attrType.AttrSSchema = elType.ElSSchema;
445: attrType.AttrTypeNum = HTML_ATTR_HREF_;
446: attr = TtaGetAttribute (el, attrType);
447: if (attr)
448: {
449: /* Use the base path of the document */
450: TtaGiveTextAttributeValue (attr, basename, &length);
451: /* base and orgName have to be separated by a DIR_SEP */
452: length--;
1.43 cvs 453: if (basename[0] != EOS && basename[length] != URL_SEP && basename[length] != DIR_SEP)
1.31 cvs 454: /* verify if the base has the form "protocol://server:port" */
455: {
1.33 cvs 456: ptr = AmayaParseUrl (basename, "", AMAYA_PARSE_ACCESS |
457: AMAYA_PARSE_HOST |
458: AMAYA_PARSE_PUNCTUATION);
1.31 cvs 459: if (ptr && !strcmp (ptr, basename))
460: {
1.43 cvs 461: /* it has this form, we complete it by adding a URL_STR */
462: if (strchr (basename, DIR_SEP))
463: strcat (basename, DIR_STR);
464: else
465: strcat (basename, URL_STR);
1.31 cvs 466: length++;
467: }
468: if (ptr)
469: TtaFreeMemory (ptr);
470: }
471: }
1.33 cvs 472: }
473:
1.31 cvs 474: /* Remove anything after the last DIR_SEP char. If no such char is found,
475: * then search for the first ":" char, hoping that what's before that is a
476: * protocol. If found, end the string there. If neither char is found,
477: * then discard the whole base element.
478: */
479: length = strlen (basename) - 1;
480: /* search for the last DIR_SEP char */
1.43 cvs 481: while (length >= 0 && basename[length] != URL_SEP && basename[length] != DIR_SEP)
1.31 cvs 482: length--;
483: if (length >= 0)
484: /* found the last DIR_SEP char, end the string there */
485: basename[length + 1] = EOS;
486: else
487: /* search for the first PATH_STR char */
488: {
1.32 cvs 489: for (length = 0; basename[length] != ':' &&
1.31 cvs 490: basename[length] != EOS; length ++);
1.32 cvs 491: if (basename[length] == ':')
1.31 cvs 492: /* found, so end the string there */
493: basename[length + 1] = EOS;
494: else
495: /* not found, discard the base */
496: basename[0] = EOS;
497: }
498: return (basename);
499: }
500:
501:
1.4 cvs 502: /*----------------------------------------------------------------------
1.40 cvs 503: GetLocalPath
504: Allocate and return the local document path associated to the url
505: ----------------------------------------------------------------------*/
506: #ifdef __STDC__
507: char *GetLocalPath (Document doc, char *url)
508: #else /* __STDC__ */
509: char *GetLocalPath (doc, url)
510: Document doc;
511: char *url;
512: #endif /* __STDC__ */
513: {
1.46 cvs 514: char *ptr, *n;
1.40 cvs 515: char *documentname;
1.41 cvs 516: char url_sep;
1.40 cvs 517: int len;
518: boolean noFile;
519:
520: if (url != NULL)
521: {
522: /* check whether the file name exists */
523: len = strlen (url) - 1;
1.41 cvs 524: if (IsW3Path)
525: url_sep = '/';
526: else
527: url_sep = DIR_SEP;
528: noFile = (url[len] == url_sep);
1.40 cvs 529: if (noFile)
530: url[len] = EOS;
1.47 cvs 531: ptr = TtaGetMemory (MAX_LENGTH);
532: documentname = TtaGetMemory (MAX_LENGTH);
1.40 cvs 533: TtaExtractName (url, ptr, documentname);
534: sprintf (ptr, "%s%s%d%s", TempFileDirectory, DIR_STR, doc, DIR_STR);
535: if (!TtaCheckDirectory (ptr))
536: /* directory did not exist */
537: mkdir (ptr, S_IRWXU);
1.47 cvs 538:
539: /* don't include the query string within document name */
540: n = strrchr(documentname, '?');
541: if (n != NULL)
542: *n = EOS;
1.46 cvs 543: /* don't include ':' within document name */
544: n = strchr (documentname, ':');
545: if (n != NULL)
546: *n = EOS;
1.40 cvs 547: strcat (ptr, documentname);
548: TtaFreeMemory (documentname);
549: /* restore the url */
550: if (noFile)
1.41 cvs 551: url[len] = url_sep;
1.40 cvs 552: return (ptr);
553: }
554: else
555: return (NULL);
556: }
557:
558:
559: /*----------------------------------------------------------------------
1.9 cvs 560: NormalizeURL
561: normalizes orgName according to a base associated with doc, and
562: following the standard URL format rules.
563: The function returns the new complete and normalized URL
1.12 cvs 564: or file name path (newName) and the name of the document (docName).
1.9 cvs 565: N.B. If the function can't find out what's the docName, it assigns
566: the name "noname.html".
1.4 cvs 567: ----------------------------------------------------------------------*/
1.3 cvs 568: #ifdef __STDC__
569: void NormalizeURL (char *orgName, Document doc, char *newName, char *docName)
570: #else /* __STDC__ */
571: void NormalizeURL (orgName, doc, newName, docName)
572: char *orgName;
573: Document doc;
574: char *newName;
575: char *docName;
576: #endif /* __STDC__ */
577: {
1.31 cvs 578: char *basename;
1.18 cvs 579: char tempOrgName[MAX_LENGTH];
1.5 cvs 580: char *ptr;
1.49 cvs 581: char used_sep;
1.5 cvs 582: int length;
1.49 cvs 583: boolean check;
1.5 cvs 584:
1.44 cvs 585: # ifdef _WINDOWS
586: int ndx;
587: # endif /* _WINDOWS */
588:
1.5 cvs 589: if (!newName || !docName)
590: return;
1.18 cvs 591:
1.32 cvs 592: if (doc != 0)
1.50 cvs 593: basename = GetBaseURL (doc);
1.32 cvs 594: else
1.50 cvs 595: basename = (char *) NULL;
1.32 cvs 596:
1.18 cvs 597: /*
1.31 cvs 598: * Clean orgName
599: * Make sure we have a complete orgName, without any leading or trailing
600: * white spaces, or trailinbg new lines
601: */
1.5 cvs 602: ptr = orgName;
1.18 cvs 603: /* skip leading white space and new line characters */
1.19 cvs 604: while ((*ptr == ' ' || *ptr == EOL) && *ptr++ != EOS);
1.39 cvs 605: strncpy (tempOrgName, ptr, MAX_LENGTH -1);
606: tempOrgName[MAX_LENGTH -1] = EOS;
1.18 cvs 607: /*
1.31 cvs 608: * Make orgName a complete URL
609: * If the URL does not include a protocol, then try to calculate
610: * one using the doc's base element (if it exists),
611: */
1.50 cvs 612: if (tempOrgName[0] == EOS) {
613: newName[0] = EOS;
614: TtaFreeMemory (basename);
615: return;
616: }
1.49 cvs 617:
618: /* clean trailing white space */
619: length = strlen (tempOrgName) - 1;
1.50 cvs 620: while (tempOrgName[length] == SPACE && tempOrgName[length] == EOL) {
621: tempOrgName[length] = EOS;
622: length--;
623: }
624:
1.49 cvs 625: /* remove extra dot */
626: if (tempOrgName[length] == '.')
1.50 cvs 627: tempOrgName[length] = EOS;
628:
629: if (IsW3Path (tempOrgName)) {
630: /* the name is complete, go to the Sixth Step */
631: strcpy (newName, tempOrgName);
1.52 ! cvs 632: SimplifyUrl (&newName);
1.50 cvs 633: /* verify if the URL has the form "protocol://server:port" */
634: ptr = AmayaParseUrl (newName, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
635: if (ptr && !strcmp (ptr, newName)) /* it has this form, we complete it by adding a DIR_STR */
636: strcat (newName, URL_STR);
1.49 cvs 637:
1.50 cvs 638: if (ptr)
639: TtaFreeMemory (ptr);
640: } else if ( doc == 0) /* the name is complete, go to the Sixth Step */
1.18 cvs 641: strcpy (newName, tempOrgName);
1.50 cvs 642: else {
1.31 cvs 643: /* Calculate the absolute URL, using the base or document URL */
1.44 cvs 644: # ifdef _WINDOWS
1.45 cvs 645: if (!IsW3Path (basename)) {
646: length = strlen (tempOrgName);
647: for (ndx = 0; ndx < length; ndx++)
648: if (tempOrgName [ndx] == '/')
649: tempOrgName [ndx] = '\\';
650: }
1.44 cvs 651: # endif /* _WINDOWS */
1.25 cvs 652: ptr = AmayaParseUrl (tempOrgName, basename, AMAYA_PARSE_ALL);
1.50 cvs 653: if (ptr) {
654: SimplifyUrl (&ptr);
655: strcpy (newName, ptr);
656: TtaFreeMemory (ptr);
657: } else
658: newName[0] = EOS;
659: }
1.36 cvs 660:
661: TtaFreeMemory (basename);
1.18 cvs 662: /*
1.31 cvs 663: * Prepare the docname that will refer to this ressource in the
664: * .amaya directory. If the new URL finishes on DIR_SEP, then use
665: * noname.html as a default ressource name
1.18 cvs 666: */
1.50 cvs 667: if (newName[0] != EOS) {
668: length = strlen (newName) - 1;
669: if (newName[length] == URL_SEP || newName[length] == DIR_SEP) {
670: used_sep = newName[length];
671: check = TRUE;
672: while (check) {
673: length--;
674: while (length >= 0 && newName[length] != used_sep)
675: length--;
676: if (!strncmp (&newName[length+1], "..", 2)) {
677: newName[length+1] = EOS;
678: /* remove also previous directory */
679: length--;
680: while (length >= 0 && newName[length] != used_sep)
681: length--;
682: if (strncmp (&newName[length+1], "//", 2)) /* don't remove server name */
683: newName[length+1] = EOS;
684: } else if (!strncmp (&newName[length+1], ".", 1))
685: newName[length+1] = EOS;
686: else
687: check = FALSE;
688: }
1.49 cvs 689: strcpy (docName, "noname.html");
1.50 cvs 690: /* docname was not comprised inside the URL, so let's */
691: /* assign the default ressource name */
692: strcpy (docName, "noname.html");
693: } else { /* docname is comprised inside the URL */
694: while (length >= 0 && newName[length] != URL_SEP && newName[length] != DIR_SEP)
695: length--;
696: if (length < 0)
697: strcpy (docName, newName);
698: else
699: strcpy (docName, &newName[length+1]);
700: }
701: } else
702: docName[0] = EOS;
1.18 cvs 703: }
1.3 cvs 704:
1.4 cvs 705: /*----------------------------------------------------------------------
1.9 cvs 706: IsSameHost
1.4 cvs 707: ----------------------------------------------------------------------*/
1.3 cvs 708: #ifdef __STDC__
1.34 cvs 709: boolean IsSameHost (const char *url1, const char *url2)
1.3 cvs 710: #else /* __STDC__ */
711: boolean IsSameHost (url1, url2)
1.34 cvs 712: const char *url1;
713: const char *url2;
1.3 cvs 714: #endif /* __STDC__ */
715: {
1.34 cvs 716: char *basename_ptr1, *basename_ptr2;
717: boolean result;
1.3 cvs 718:
1.25 cvs 719: basename_ptr1 = AmayaParseUrl (url1, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
720: basename_ptr2 = AmayaParseUrl (url2, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
1.3 cvs 721:
1.5 cvs 722: if (strcmp (basename_ptr1, basename_ptr2))
1.8 cvs 723: result = FALSE;
1.5 cvs 724: else
1.8 cvs 725: result = TRUE;
1.3 cvs 726:
1.25 cvs 727: TtaFreeMemory (basename_ptr1);
728: TtaFreeMemory (basename_ptr2);
1.5 cvs 729: return (result);
1.3 cvs 730: }
731:
732:
1.4 cvs 733: /*----------------------------------------------------------------------
1.22 cvs 734: HasKnownFileSuffix
735: returns TRUE if path points to a file ending with a suffix.
736: ----------------------------------------------------------------------*/
737: #ifdef __STDC__
1.34 cvs 738: boolean HasKnownFileSuffix (const char *path)
1.22 cvs 739: #else /* __STDC__ */
740: boolean HasKnownFileSuffix (path)
1.34 cvs 741: const char *path;
1.22 cvs 742: #endif /* __STDC__ */
743: {
1.29 cvs 744: char *root;
745: char temppath[MAX_LENGTH];
746: char suffix[MAX_LENGTH];
1.22 cvs 747:
1.24 cvs 748: if (!path || path[0] == EOS || path[strlen(path)] == DIR_SEP)
1.22 cvs 749: return (FALSE);
750:
1.29 cvs 751: root = AmayaParseUrl(path, "", AMAYA_PARSE_PATH | AMAYA_PARSE_PUNCTUATION);
1.22 cvs 752:
753: if (root)
754: {
755: strcpy (temppath, root);
1.25 cvs 756: TtaFreeMemory (root);
1.22 cvs 757: /* Get the suffix */
758: ExtractSuffix (temppath, suffix);
759:
760: if( suffix[0] == EOS)
761: /* no suffix */
762: return (FALSE);
763:
764: /* Normalize the suffix */
765: ConvertToLowerCase (suffix);
766:
1.23 cvs 767: if (!strcmp (suffix, "gz"))
1.22 cvs 768: /* skip the compressed suffix */
769: {
770: ExtractSuffix (temppath, suffix);
771: if(suffix[0] == EOS)
772: /* no suffix */
773: return (FALSE);
774: /* Normalize the suffix */
775: ConvertToLowerCase (suffix);
776: }
777:
778: if ((strcmp (suffix, "gif")) && (strcmp (suffix, "xbm")) &&
779: (strcmp (suffix, "xpm")) && (strcmp (suffix, "jpg")) &&
780: (strcmp (suffix, "pdf")) && (strcmp (suffix, "png")) &&
781: (strcmp (suffix, "tgz")) && (strcmp (suffix, "xpg")) &&
782: (strcmp (suffix, "xpd")) && (strcmp (suffix, "ps")) &&
783: (strcmp (suffix, "au")) && (strcmp (suffix, "html")) &&
784: (strcmp (suffix, "htm")) && (strcmp (suffix, "shtml")) &&
785: (strcmp (suffix, "txt")) && (strcmp (suffix, "css")) &&
786: (strcmp (suffix, "eps")))
787: return (FALSE);
788: else
789: return (TRUE);
790: }
791: else
792: return (FALSE);
793: }
794:
795:
796: /*----------------------------------------------------------------------
1.24 cvs 797: ChopURL
798: Gives back a URL no longer than MAX_PRINT_URL_LENGTH chars (outputURL).
799: If inputURL is bigger than that size, outputURL receives
800: MAX_PRINT_URL_LENGTH / 2 chars from the beginning of inputURL, "...",
801: and MAX_PRINT_URL_LENGTH / 2 chars from the end of inputURL.
802: If inputURL is not longer than MAX_PRINT_URL_LENGTH chars, it gets
803: copied into outputURL.
804: N.B.: outputURL must point to a memory block of MAX_PRINT_URL_LENGTH
805: chars.
806: ----------------------------------------------------------------------*/
807: #ifdef __STDC__
1.34 cvs 808: void ChopURL (char *outputURL, const char *inputURL)
1.24 cvs 809: #else
810: void ChopURL (outputURL, inputURL)
1.34 cvs 811: char *outputURL;
812: const char *inputURL;
1.24 cvs 813: #endif
1.22 cvs 814:
1.24 cvs 815: {
816: int len;
1.9 cvs 817:
1.24 cvs 818: len = strlen (inputURL);
819: if (len <= MAX_PRINT_URL_LENGTH)
1.29 cvs 820: strcpy (outputURL, inputURL);
1.24 cvs 821: else
822: /* make a truncated urlName on the status window */
823: {
824: strncpy (outputURL, inputURL, MAX_PRINT_URL_LENGTH / 2);
825: outputURL [MAX_PRINT_URL_LENGTH / 2] = EOS;
826: strcat (outputURL, "...");
827: strcat (outputURL, &(inputURL[len - MAX_PRINT_URL_LENGTH / 2 ]));
828: }
1.25 cvs 829: }
830:
831:
832: /*----------------------------------------------------------------------
833: scan
1.47 cvs 834: Scan a filename for its constituents
1.25 cvs 835: -----------------------------------
836:
837: On entry,
838: name points to a document name which may be incomplete.
839: On exit,
840: absolute or relative may be nonzero (but not both).
841: host, fragment and access may be nonzero if they were specified.
842: Any which are nonzero point to zero terminated strings.
843: ----------------------------------------------------------------------*/
844: #ifdef __STDC__
845: static void scan (char * name, HTURI * parts)
846: #else /* __STDC__ */
847: static void scan (name, parts)
848: char *name;
849: HTURI *parts;
850:
851: #endif /* __STDC__ */
852: {
1.43 cvs 853: char *p;
854: char *after_access = name;
1.32 cvs 855:
1.43 cvs 856: memset (parts, '\0', sizeof (HTURI));
1.28 cvs 857: /* Look for fragment identifier */
1.52 ! cvs 858: if ((p = strchr(name, '#')) != NULL)
1.28 cvs 859: {
860: *p++ = '\0';
861: parts->fragment = p;
1.25 cvs 862: }
863:
1.28 cvs 864: for (p=name; *p; p++)
865: {
1.43 cvs 866: if (*p == URL_SEP || *p == DIR_SEP || *p=='#' || *p=='?')
1.28 cvs 867: break;
1.32 cvs 868: if (*p==':')
1.28 cvs 869: {
870: *p = 0;
871: parts->access = after_access; /* Scheme has been specified */
872:
873: /* The combination of gcc, the "-O" flag and the HP platform is
874: unhealthy. The following three lines is a quick & dirty fix, but is
875: not recommended. Rather, turn off "-O". */
876:
877: /* after_access = p;*/
878: /* while (*after_access == 0)*/
879: /* after_access++;*/
880: after_access = p+1;
1.43 cvs 881: if (!strcasecmp("URL", parts->access))
1.28 cvs 882: /* Ignore IETF's URL: pre-prefix */
883: parts->access = NULL;
884: else
1.25 cvs 885: break;
886: }
887: }
888:
889: p = after_access;
1.43 cvs 890: if (*p == URL_SEP || *p == DIR_SEP)
1.28 cvs 891: {
1.43 cvs 892: if (p[1] == URL_SEP)
1.28 cvs 893: {
1.25 cvs 894: parts->host = p+2; /* host has been specified */
1.28 cvs 895: *p = 0; /* Terminate access */
896: /* look for end of host name if any */
1.43 cvs 897: p = strchr (parts->host, URL_SEP);
1.28 cvs 898: if (p)
899: {
1.43 cvs 900: *p = EOS; /* Terminate host */
1.25 cvs 901: parts->absolute = p+1; /* Root has been found */
1.28 cvs 902: }
903: }
904: else
905: /* Root found but no host */
906: parts->absolute = p+1;
907: }
908: else
909: {
1.25 cvs 910: parts->relative = (*after_access) ? after_access : 0; /* zero for "" */
1.28 cvs 911: }
1.25 cvs 912: }
913:
914:
915: /*----------------------------------------------------------------------
1.28 cvs 916: AmayaParseUrl: parse a Name relative to another name
917:
918: This returns those parts of a name which are given (and requested)
919: substituting bits from the related name where necessary.
1.25 cvs 920:
1.28 cvs 921: On entry,
1.25 cvs 922: aName A filename given
923: relatedName A name relative to which aName is to be parsed. Give
924: it an empty string if aName is absolute.
925: wanted A mask for the bits which are wanted.
926:
1.28 cvs 927: On exit,
1.25 cvs 928: returns A pointer to a malloc'd string which MUST BE FREED
929: ----------------------------------------------------------------------*/
930: #ifdef __STDC__
1.34 cvs 931: char *AmayaParseUrl (const char *aName, char *relatedName, int wanted)
1.25 cvs 932: #else /* __STDC__ */
1.28 cvs 933: char *AmayaParseUrl (aName, relatedName, wanted)
1.34 cvs 934: const char *aName;
1.28 cvs 935: char *relatedName;
936: int wanted;
1.25 cvs 937:
938: #endif /* __STDC__ */
939: {
1.29 cvs 940: char *return_value;
941: char result[MAX_LENGTH];
942: char name[MAX_LENGTH];
943: char rel[MAX_LENGTH];
944: char *p, *access;
945: HTURI given, related;
946: int len;
1.33 cvs 947: char used_sep;
948: char *used_str;
1.32 cvs 949:
1.43 cvs 950: if (strchr (aName, DIR_SEP) || strchr (relatedName, DIR_SEP))
1.33 cvs 951: {
1.42 cvs 952: used_str = DIR_STR;
953: used_sep = DIR_SEP;
1.33 cvs 954: }
1.32 cvs 955: else
1.33 cvs 956: {
1.42 cvs 957: used_str = URL_STR;
958: used_sep = URL_SEP;
1.33 cvs 959: }
1.32 cvs 960:
1.29 cvs 961: /* Make working copies of input strings to cut up: */
962: return_value = NULL;
963: result[0] = 0; /* Clear string */
964: strcpy (name, aName);
965: if (relatedName != NULL)
966: strcpy (rel, relatedName);
967: else
968: relatedName[0] = EOS;
969:
970: scan (name, &given);
971: scan (rel, &related);
972: access = given.access ? given.access : related.access;
973: if (wanted & AMAYA_PARSE_ACCESS)
974: if (access)
975: {
976: strcat (result, access);
977: if(wanted & AMAYA_PARSE_PUNCTUATION)
1.32 cvs 978: strcat (result, ":");
1.29 cvs 979: }
980:
981: if (given.access && related.access)
982: /* If different, inherit nothing. */
983: if (strcmp (given.access, related.access) != 0)
984: {
985: related.host = 0;
986: related.absolute = 0;
987: related.relative = 0;
988: related.fragment = 0;
989: }
990:
991: if (wanted & AMAYA_PARSE_HOST)
992: if(given.host || related.host)
993: {
994: if(wanted & AMAYA_PARSE_PUNCTUATION)
995: strcat (result, "//");
996: strcat (result, given.host ? given.host : related.host);
997: }
998:
999: if (given.host && related.host)
1000: /* If different hosts, inherit no path. */
1001: if (strcmp(given.host, related.host) != 0)
1002: {
1003: related.absolute = 0;
1004: related.relative = 0;
1005: related.fragment = 0;
1006: }
1007:
1008: if (wanted & AMAYA_PARSE_PATH)
1009: {
1010: if (given.absolute)
1011: {
1012: /* All is given */
1013: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.33 cvs 1014: strcat (result, used_str);
1.29 cvs 1015: strcat (result, given.absolute);
1.25 cvs 1016: }
1.29 cvs 1017: else if (related.absolute)
1018: {
1019: /* Adopt path not name */
1.33 cvs 1020: strcat (result, used_str);
1.29 cvs 1021: strcat (result, related.absolute);
1022: if (given.relative)
1023: {
1024: /* Search part? */
1025: p = strchr (result, '?');
1026: if (!p)
1027: p=result+strlen(result)-1;
1.33 cvs 1028: for (; *p!=used_sep; p--); /* last / */
1.29 cvs 1029: /* Remove filename */
1030: p[1]=0;
1031: /* Add given one */
1032: strcat (result, given.relative);
1.25 cvs 1033: }
1034: }
1.29 cvs 1035: else if (given.relative)
1036: /* what we've got */
1037: strcat (result, given.relative);
1038: else if (related.relative)
1039: strcat (result, related.relative);
1040: else
1041: /* No inheritance */
1.33 cvs 1042: strcat (result, used_str);
1.25 cvs 1043: }
1.29 cvs 1044:
1045: if (wanted & AMAYA_PARSE_ANCHOR)
1046: if (given.fragment || related.fragment)
1047: {
1048: if (given.absolute && given.fragment)
1049: {
1050: /*Fixes for relURLs...*/
1051: if (wanted & AMAYA_PARSE_PUNCTUATION)
1052: strcat (result, "#");
1053: strcat (result, given.fragment);
1054: }
1055: else if (!(given.absolute) && !(given.fragment))
1056: strcat (result, "");
1057: else
1058: {
1059: if (wanted & AMAYA_PARSE_PUNCTUATION)
1060: strcat (result, "#");
1061: strcat (result, given.fragment ? given.fragment : related.fragment);
1062: }
1063: }
1064: len = strlen (result);
1065: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1066: strcpy (return_value, result);
1067: return (return_value); /* exactly the right length */
1.25 cvs 1068: }
1069:
1070: /*----------------------------------------------------------------------
1071: HTCanon
1072: Canonicalizes the URL in the following manner starting from the host
1073: pointer:
1074:
1075: 1) The host name is converted to lowercase
1076: 2) Chop off port if `:80' (http), `:70' (gopher), or `:21' (ftp)
1077:
1078: Return: OK The position of the current path part of the URL
1079: which might be the old one or a new one.
1080:
1081: ----------------------------------------------------------------------*/
1082: #ifdef __STDC__
1.28 cvs 1083: static char *HTCanon (char ** filename, char * host)
1.25 cvs 1084: #else /* __STDC__ */
1.28 cvs 1085: static char *HTCanon (filename, host)
1086: char **filename;
1087: char *host;
1.25 cvs 1088: #endif /* __STDC__ */
1089: {
1090: char *newname = NULL;
1091: char *port;
1092: char *strptr;
1093: char *path;
1094: char *access = host-3;
1.33 cvs 1095: char used_sep;
1.32 cvs 1096:
1097:
1.33 cvs 1098: if (*filename && strchr (*filename, URL_SEP))
1099: {
1100: used_sep = URL_SEP;
1101: }
1102: else
1103: {
1104: used_sep = DIR_SEP;
1105: }
1.32 cvs 1106:
1.33 cvs 1107: while (access>*filename && *(access-1)!= used_sep) /* Find access method */
1.25 cvs 1108: access--;
1.33 cvs 1109: if ((path = strchr(host, used_sep)) == NULL) /* Find path */
1.25 cvs 1110: path = host + strlen(host);
1111: if ((strptr = strchr(host, '@')) != NULL && strptr<path) /* UserId */
1112: host = strptr;
1.32 cvs 1113: if ((port = strchr(host, ':')) != NULL && port>path) /* Port number */
1.25 cvs 1114: port = NULL;
1115:
1116: strptr = host; /* Convert to lower-case */
1.33 cvs 1117: while (strptr<path)
1118: {
1.25 cvs 1119: *strptr = tolower(*strptr);
1120: strptr++;
1.33 cvs 1121: }
1.25 cvs 1122:
1123: /* Does the URL contain a full domain name? This also works for a
1124: numerical host name. The domain name is already made lower-case
1125: and without a trailing dot. */
1126: {
1.33 cvs 1127: char *dot = port ? port : path;
1128: if (dot > *filename && *--dot=='.')
1129: {
1130: char *orig=dot, *dest=dot+1;
1131: while((*orig++ = *dest++));
1132: if (port) port--;
1133: path--;
1.25 cvs 1134: }
1135: }
1136: /* Chop off port if `:', `:80' (http), `:70' (gopher), or `:21' (ftp) */
1.33 cvs 1137: if (port)
1138: {
1139: if (!*(port+1) || *(port+1)==used_sep)
1140: {
1141: if (!newname)
1142: {
1.25 cvs 1143: char *orig=port, *dest=port+1;
1144: while((*orig++ = *dest++));
1.33 cvs 1145: }
1146: }
1147: else if ((!strncmp(access, "http", 4) &&
1148: (*(port+1)=='8'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) ||
1149: (!strncmp(access, "gopher", 6) &&
1150: (*(port+1)=='7'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) ||
1151: (!strncmp(access, "ftp", 3) &&
1152: (*(port+1)=='2'&&*(port+2)=='1'&&(*(port+3)==used_sep||!*(port+3))))) {
1153: if (!newname)
1154: {
1155: char *orig=port, *dest=port+3;
1156: while((*orig++ = *dest++));
1157: /* Update path position, Henry Minsky */
1158: path -= 3;
1.25 cvs 1159: }
1.33 cvs 1160: }
1161: else if (newname)
1162: strncat(newname, port, (int) (path-port));
1163: }
1.25 cvs 1164:
1.33 cvs 1165: if (newname)
1166: {
1.25 cvs 1167: char *newpath = newname+strlen(newname);
1168: strcat(newname, path);
1169: path = newpath;
1.28 cvs 1170: /* Free old copy */
1171: TtaFreeMemory(*filename);
1.25 cvs 1172: *filename = newname;
1.33 cvs 1173: }
1.25 cvs 1174: return path;
1175: }
1176:
1177:
1178: /*----------------------------------------------------------------------
1.29 cvs 1179: SimplifyUrl: simplify a URI
1.32 cvs 1180: A URI is allowed to contain the sequence xxx/../ which may be
1181: replaced by "" , and the sequence "/./" which may be replaced by DIR_STR.
1.28 cvs 1182: Simplification helps us recognize duplicate URIs.
1.25 cvs 1183:
1.28 cvs 1184: Thus, /etc/junk/../fred becomes /etc/fred
1185: /etc/junk/./fred becomes /etc/junk/fred
1.25 cvs 1186:
1.28 cvs 1187: but we should NOT change
1188: http://fred.xxx.edu/../..
1.25 cvs 1189:
1190: or ../../albert.html
1191:
1.28 cvs 1192: In order to avoid empty URLs the following URLs become:
1.25 cvs 1193:
1194: /fred/.. becomes /fred/..
1195: /fred/././.. becomes /fred/..
1196: /fred/.././junk/.././ becomes /fred/..
1197:
1.28 cvs 1198: If more than one set of `://' is found (several proxies in cascade) then
1199: only the part after the last `://' is simplified.
1.25 cvs 1200:
1.28 cvs 1201: Returns: A string which might be the old one or a new one.
1.25 cvs 1202: ----------------------------------------------------------------------*/
1203: #ifdef __STDC__
1.29 cvs 1204: void SimplifyUrl (char ** url)
1.25 cvs 1205: #else /* __STDC__ */
1.29 cvs 1206: void SimplifyUrl (url)
1.28 cvs 1207: char **url;
1.25 cvs 1208: #endif /* __STDC__ */
1209: {
1.28 cvs 1210: char *path, *p;
1211: char *newptr, *access;
1212: char *orig, *dest, *end;
1213:
1.33 cvs 1214: char used_sep;
1.32 cvs 1215:
1216:
1.28 cvs 1217: if (!url || !*url)
1218: return;
1219:
1.33 cvs 1220: if (strchr (*url, URL_SEP))
1221: {
1222: used_sep = URL_SEP;
1223: }
1.32 cvs 1224: else
1.33 cvs 1225: {
1226: used_sep = DIR_SEP;
1227: }
1.32 cvs 1228:
1.28 cvs 1229: /* Find any scheme name */
1230: if ((path = strstr(*url, "://")) != NULL)
1.33 cvs 1231: {
1232: /* Find host name */
1.28 cvs 1233: access = *url;
1234: while (access<path && (*access=tolower(*access)))
1235: access++;
1236: path += 3;
1237: while ((newptr = strstr(path, "://")) != NULL)
1238: /* For proxies */
1239: path = newptr+3;
1240: /* We have a host name */
1241: path = HTCanon(url, path);
1.25 cvs 1242: }
1.28 cvs 1243: else if ((path = strstr(*url, ":/")) != NULL)
1244: path += 2;
1245: else
1246: path = *url;
1.25 cvs 1247:
1.33 cvs 1248: if (*path == used_sep && *(path+1)==used_sep)
1.28 cvs 1249: /* Some URLs start //<foo> */
1250: path += 1;
1251: else if (!strncmp(path, "news:", 5))
1252: {
1253: newptr = strchr(path+5, '@');
1254: if (!newptr)
1255: newptr = path + 5;
1256: while (*newptr)
1257: {
1258: /* Make group or host lower case */
1259: *newptr = tolower (*newptr);
1260: newptr++;
1.25 cvs 1261: }
1.28 cvs 1262: /* Doesn't need to do any more */
1263: return;
1.25 cvs 1264: }
1.28 cvs 1265:
1266: if ((p = path))
1267: {
1268: if (!((end = strchr (path, ';')) || (end = strchr (path, '?')) ||
1269: (end = strchr (path, '#'))))
1270: end = path + strlen (path);
1271:
1272: /* Parse string second time to simplify */
1273: p = path;
1274: while (p < end)
1275: {
1.33 cvs 1276: if (*p==used_sep)
1.28 cvs 1277: {
1.33 cvs 1278: if (p > *url && *(p+1) == '.' && (*(p+2) == used_sep || !*(p+2)))
1.28 cvs 1279: {
1280: orig = p + 1;
1.33 cvs 1281: dest = (*(p+2)!=used_sep) ? p+2 : p+3;
1.52 ! cvs 1282: while ((*orig++ = *dest++)); /* Remove a used_sep and a dot*/
1.28 cvs 1283: end = orig - 1;
1284: }
1.33 cvs 1285: else if (*(p+1)=='.' && *(p+2)=='.' && (*(p+3)==used_sep || !*(p+3)))
1.28 cvs 1286: {
1287: newptr = p;
1.52 ! cvs 1288: while (newptr>path && *--newptr!=used_sep); /* prev used_sep */
! 1289: if (*newptr == used_sep)
! 1290: orig = newptr + 1;
1.28 cvs 1291: else
1.52 ! cvs 1292: orig = newptr;
! 1293:
! 1294: dest = (*(p+3) != used_sep) ? p+3 : p+4;
! 1295: while ((*orig++ = *dest++)); /* Remove /xxx/.. */
! 1296: end = orig-1;
! 1297: /* Start again with prev slash */
! 1298: p = newptr;
1.28 cvs 1299: }
1.33 cvs 1300: else if (*(p+1) == used_sep)
1.28 cvs 1301: {
1.33 cvs 1302: while (*(p+1) == used_sep)
1.28 cvs 1303: {
1304: orig = p;
1305: dest = p + 1;
1306: while ((*orig++ = *dest++)); /* Remove multiple /'s */
1307: end = orig-1;
1308: }
1309: }
1310: else
1.25 cvs 1311: p++;
1.28 cvs 1312: }
1313: else
1314: p++;
1.25 cvs 1315: }
1316: }
1.51 cvs 1317:
1318: /*
1319: ** Check for host/../.. kind of things
1320: */
1.52 ! cvs 1321: if (*path==used_sep && *(path+1)=='.' && *(path+2)=='.' && (!*(path+3) || *(path+3)==used_sep))
1.51 cvs 1322: *(path+1) = EOS;
1323:
1.28 cvs 1324: return;
1325: }
1326:
1327:
1328: /*----------------------------------------------------------------------
1329: NormalizeFile normalizes local names.
1330: Return TRUE if target and src differ.
1331: ----------------------------------------------------------------------*/
1332: #ifdef __STDC__
1333: boolean NormalizeFile (char *src, char *target)
1334: #else
1335: boolean NormalizeFile (src, target)
1336: char *src;
1337: char *target;
1338:
1339: #endif
1340: {
1341: char *s;
1342: boolean change;
1343:
1344: change = FALSE;
1.48 cvs 1345: # ifdef _WINDOWS
1346: if (src[1] == ':' && src[2] == '\\') {
1347: strcpy (target, src);
1348: change = TRUE;
1349: }
1350: # else /* !_WINDOWS */
1.28 cvs 1351: if (src[0] == '~')
1352: {
1353: /* replace ~ */
1354: s = (char *) TtaGetEnvString ("HOME");
1355: strcpy (target, s);
1356: strcat (target, &src[1]);
1357: change = TRUE;
1358: }
1.48 cvs 1359: # endif /* _WINDOWS */
1.28 cvs 1360: else if (strncmp (src, "file:", 5) == 0)
1361: {
1362: /* remove the prefix file: */
1363: if (src[5] == EOS)
1364: strcpy (target, DIR_STR);
1365: else if (src[0] == '~')
1366: {
1367: /* replace ~ */
1368: s = (char *) TtaGetEnvString ("HOME");
1369: strcpy (target, s);
1370: strcat (target, &src[5]);
1371: }
1372: else
1373: strcpy (target, &src[5]);
1374: change = TRUE;
1375: }
1376: else
1377: strcpy (target, src);
1378:
1379: /* remove /../ and /./ */
1.29 cvs 1380: SimplifyUrl (&target);
1.28 cvs 1381: return (change);
1.25 cvs 1382: }
1383:
1.28 cvs 1384:
1.25 cvs 1385: /*----------------------------------------------------------------------
1.31 cvs 1386: MakeRelativeURL: make relative name
1.25 cvs 1387:
1.28 cvs 1388: This function creates and returns a string which gives an expression of
1389: one address as related to another. Where there is no relation, an absolute
1390: address is retured.
1.25 cvs 1391:
1.28 cvs 1392: On entry,
1.25 cvs 1393: Both names must be absolute, fully qualified names of nodes
1394: (no fragment bits)
1395:
1.28 cvs 1396: On exit,
1.25 cvs 1397: The return result points to a newly allocated name which, if
1398: parsed by AmayaParseUrl relative to relatedName, will yield aName.
1399: The caller is responsible for freeing the resulting name later.
1400: ----------------------------------------------------------------------*/
1401: #ifdef __STDC__
1.31 cvs 1402: char *MakeRelativeURL (char *aName, char *relatedName)
1.25 cvs 1403: #else /* __STDC__ */
1.31 cvs 1404: char *MakeRelativeURL (aName, relatedName)
1.28 cvs 1405: char *aName;
1406: char *relatedName;
1.25 cvs 1407: #endif /* __STDC__ */
1408: {
1.39 cvs 1409: char *return_value;
1410: char result[MAX_LENGTH];
1.29 cvs 1411: char *p;
1.34 cvs 1412: char *q;
1.29 cvs 1413: char *after_access;
1414: char *last_slash = NULL;
1415: int slashes, levels, len;
1416:
1.44 cvs 1417: # ifdef _WINDOWS
1418: int ndx;
1419: # endif /* _WINDOWS */
1420:
1.29 cvs 1421: if (aName == NULL || relatedName == NULL)
1422: return (NULL);
1423:
1424: slashes = 0;
1425: after_access = NULL;
1426: p = aName;
1427: q = relatedName;
1428: for (; *p && (*p == *q); p++, q++)
1.27 cvs 1429: {
1430: /* Find extent of match */
1.32 cvs 1431: if (*p == ':')
1.29 cvs 1432: after_access = p + 1;
1.28 cvs 1433: if (*p == DIR_SEP)
1.27 cvs 1434: {
1.29 cvs 1435: /* memorize the last slash position and count them */
1.27 cvs 1436: last_slash = p;
1437: slashes++;
1.25 cvs 1438: }
1439: }
1440:
1.31 cvs 1441: /* q, p point to the first non-matching character or zero */
1442: if (*q == EOS)
1443: {
1444: /* New name is a subset of the related name */
1445: /* exactly the right length */
1446: len = strlen (p);
1447: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1448: strcpy (return_value, p);
1449: }
1450: else if ((slashes < 2 && after_access == NULL)
1451: || (slashes < 3 && after_access != NULL))
1452: {
1453: /* Two names whitout common path */
1454: /* exactly the right length */
1455: len = strlen (aName);
1456: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1457: strcpy (return_value, aName);
1458: }
1459: else
1460: {
1461: /* Some path in common */
1462: if (slashes == 3 && strncmp (aName, "http:", 5) == 0)
1463: /* just the same server */
1464: strcpy (result, last_slash);
1465: else
1466: {
1467: levels= 0;
1.52 ! cvs 1468: for (; *q && *q != '#' && *q!=';' && *q!='?'; q++)
1.31 cvs 1469: if (*q == DIR_SEP)
1470: levels++;
1471:
1.52 ! cvs 1472: result[0] = EOS;
1.31 cvs 1473: for (;levels; levels--)
1474: strcat (result, "../");
1475: strcat (result, last_slash+1);
1476: }
1.52 ! cvs 1477:
! 1478: if (!*result)
! 1479: strcat (result, "./");
! 1480:
1.31 cvs 1481: /* exactly the right length */
1482: len = strlen (result);
1483: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1484: strcpy (return_value, result);
1.52 ! cvs 1485:
1.25 cvs 1486: }
1.44 cvs 1487: # ifdef _WINDOWS
1488: len = strlen (return_value);
1489: for (ndx = 0; ndx < len; ndx ++)
1490: if (return_value[ndx] == '\\')
1491: return_value[ndx] = '/' ;
1492: # endif /* _WINDOWS */
1.29 cvs 1493: return (return_value);
1.24 cvs 1494: }
1.35 cvs 1495:
1496:
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