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