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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: /*---------------------------------------------------------------------- 1.9 cvs 526: NormalizeURL 527: normalizes orgName according to a base associated with doc, and 528: following the standard URL format rules. 529: The function returns the new complete and normalized URL 1.12 cvs 530: or file name path (newName) and the name of the document (docName). 1.9 cvs 531: N.B. If the function can't find out what's the docName, it assigns 532: the name "noname.html". 1.4 cvs 533: ----------------------------------------------------------------------*/ 1.3 cvs 534: #ifdef __STDC__ 535: void NormalizeURL (char *orgName, Document doc, char *newName, char *docName) 536: #else /* __STDC__ */ 537: void NormalizeURL (orgName, doc, newName, docName) 538: char *orgName; 539: Document doc; 540: char *newName; 541: char *docName; 542: #endif /* __STDC__ */ 543: { 1.31 cvs 544: char *basename; 1.18 cvs 545: char tempOrgName[MAX_LENGTH]; 1.5 cvs 546: char *ptr; 547: int length; 1.33 cvs 548: char used_sep; 549: char *used_str; 1.5 cvs 550: 551: if (!newName || !docName) 552: return; 1.18 cvs 553: 1.32 cvs 554: if (doc != 0) 1.33 cvs 555: basename = GetBaseURL (doc); 1.32 cvs 556: else 1.33 cvs 557: basename = (char *) NULL; 1.32 cvs 558: 1.33 cvs 559: if (strchr (orgName, URL_SEP) || (basename && strchr (basename, URL_SEP))) 560: { 561: used_str = URL_STR; 562: used_sep = URL_SEP; 563: } 564: else 565: { 566: used_str = DIR_STR; 567: used_sep = DIR_SEP; 568: } 1.32 cvs 569: 1.18 cvs 570: /* 1.31 cvs 571: * Clean orgName 572: * Make sure we have a complete orgName, without any leading or trailing 573: * white spaces, or trailinbg new lines 574: */ 1.18 cvs 575: 1.5 cvs 576: ptr = orgName; 1.18 cvs 577: /* skip leading white space and new line characters */ 1.19 cvs 578: while ((*ptr == ' ' || *ptr == EOL) && *ptr++ != EOS); 1.39 ! cvs 579: strncpy (tempOrgName, ptr, MAX_LENGTH -1); ! 580: tempOrgName[MAX_LENGTH -1] = EOS; 1.18 cvs 581: /* clean trailing white space */ 582: ptr = strchr (tempOrgName, ' '); 583: if (ptr) 584: *ptr = EOS; 585: /* clean trailing new lines */ 1.19 cvs 586: ptr = strchr (tempOrgName, EOL); 1.5 cvs 587: if (ptr) 588: *ptr = EOS; 589: 1.18 cvs 590: /* 1.31 cvs 591: * Make orgName a complete URL 592: * If the URL does not include a protocol, then try to calculate 593: * one using the doc's base element (if it exists), 594: */ 1.21 cvs 595: if (tempOrgName[0] == EOS) 596: { 597: newName[0] = EOS; 1.36 cvs 598: TtaFreeMemory (basename); 1.21 cvs 599: return; 600: } 601: else if (IsW3Path (tempOrgName)) 602: { 603: /* the name is complete, go to the Sixth Step */ 604: strcpy (newName, tempOrgName); 605: /* verify if the URL has the form "protocol://server:port" */ 1.25 cvs 606: ptr = AmayaParseUrl (newName, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | 607: AMAYA_PARSE_PUNCTUATION); 1.21 cvs 608: if (ptr && !strcmp (ptr, newName)) 609: { 1.29 cvs 610: /* it has this form, we complete it by adding a DIR_STR */ 1.33 cvs 611: strcat (newName, used_str); 1.21 cvs 612: } 613: if (ptr) 1.25 cvs 614: TtaFreeMemory (ptr); 1.21 cvs 615: } 616: else if ( doc == 0) 1.19 cvs 617: /* the name is complete, go to the Sixth Step */ 1.18 cvs 618: strcpy (newName, tempOrgName); 1.5 cvs 619: else 620: { 1.22 cvs 621: 1.31 cvs 622: /* Calculate the absolute URL, using the base or document URL */ 1.32 cvs 623: 1.25 cvs 624: ptr = AmayaParseUrl (tempOrgName, basename, AMAYA_PARSE_ALL); 1.14 cvs 625: if (ptr) 626: { 1.29 cvs 627: SimplifyUrl (&ptr); 1.14 cvs 628: strcpy (newName, ptr); 1.25 cvs 629: TtaFreeMemory (ptr); 1.14 cvs 630: } 631: else 1.18 cvs 632: newName[0] = EOS; 1.5 cvs 633: } 1.36 cvs 634: 635: TtaFreeMemory (basename); 1.5 cvs 636: 1.18 cvs 637: /* 1.31 cvs 638: * Prepare the docname that will refer to this ressource in the 639: * .amaya directory. If the new URL finishes on DIR_SEP, then use 640: * noname.html as a default ressource name 1.18 cvs 641: */ 1.19 cvs 642: if (newName[0] != EOS) 1.5 cvs 643: { 1.19 cvs 644: length = strlen (newName) - 1; 1.33 cvs 645: if (newName[length] == used_sep) 1.18 cvs 646: { 647: /* docname was not comprised inside the URL, so let's */ 648: /* assign the default ressource name */ 649: strcpy (docName, "noname.html"); 650: /* remove DIR_SEP at the end of complete path */ 1.23 cvs 651: /* newName[length] = EOS; */ 1.18 cvs 652: } 1.14 cvs 653: else 1.18 cvs 654: { 655: /* docname is comprised inside the URL */ 1.33 cvs 656: while (length >= 0 && newName[length] != used_sep) 1.18 cvs 657: length--; 658: if (length < 0) 659: strcpy (docName, newName); 660: else 661: strcpy (docName, &newName[length+1]); 662: } 1.19 cvs 663: 1.5 cvs 664: } 1.18 cvs 665: else 666: docName[0] = EOS; 667: } 1.3 cvs 668: 1.4 cvs 669: /*---------------------------------------------------------------------- 1.9 cvs 670: IsSameHost 1.4 cvs 671: ----------------------------------------------------------------------*/ 1.3 cvs 672: #ifdef __STDC__ 1.34 cvs 673: boolean IsSameHost (const char *url1, const char *url2) 1.3 cvs 674: #else /* __STDC__ */ 675: boolean IsSameHost (url1, url2) 1.34 cvs 676: const char *url1; 677: const char *url2; 1.3 cvs 678: #endif /* __STDC__ */ 679: { 1.34 cvs 680: char *basename_ptr1, *basename_ptr2; 681: boolean result; 1.3 cvs 682: 1.25 cvs 683: basename_ptr1 = AmayaParseUrl (url1, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION); 684: basename_ptr2 = AmayaParseUrl (url2, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION); 1.3 cvs 685: 1.5 cvs 686: if (strcmp (basename_ptr1, basename_ptr2)) 1.8 cvs 687: result = FALSE; 1.5 cvs 688: else 1.8 cvs 689: result = TRUE; 1.3 cvs 690: 1.25 cvs 691: TtaFreeMemory (basename_ptr1); 692: TtaFreeMemory (basename_ptr2); 1.5 cvs 693: return (result); 1.3 cvs 694: } 695: 696: 1.4 cvs 697: /*---------------------------------------------------------------------- 1.22 cvs 698: HasKnownFileSuffix 699: returns TRUE if path points to a file ending with a suffix. 700: ----------------------------------------------------------------------*/ 701: #ifdef __STDC__ 1.34 cvs 702: boolean HasKnownFileSuffix (const char *path) 1.22 cvs 703: #else /* __STDC__ */ 704: boolean HasKnownFileSuffix (path) 1.34 cvs 705: const char *path; 1.22 cvs 706: #endif /* __STDC__ */ 707: { 1.29 cvs 708: char *root; 709: char temppath[MAX_LENGTH]; 710: char suffix[MAX_LENGTH]; 1.22 cvs 711: 1.24 cvs 712: if (!path || path[0] == EOS || path[strlen(path)] == DIR_SEP) 1.22 cvs 713: return (FALSE); 714: 1.29 cvs 715: root = AmayaParseUrl(path, "", AMAYA_PARSE_PATH | AMAYA_PARSE_PUNCTUATION); 1.22 cvs 716: 717: if (root) 718: { 719: strcpy (temppath, root); 1.25 cvs 720: TtaFreeMemory (root); 1.22 cvs 721: /* Get the suffix */ 722: ExtractSuffix (temppath, suffix); 723: 724: if( suffix[0] == EOS) 725: /* no suffix */ 726: return (FALSE); 727: 728: /* Normalize the suffix */ 729: ConvertToLowerCase (suffix); 730: 1.23 cvs 731: if (!strcmp (suffix, "gz")) 1.22 cvs 732: /* skip the compressed suffix */ 733: { 734: ExtractSuffix (temppath, suffix); 735: if(suffix[0] == EOS) 736: /* no suffix */ 737: return (FALSE); 738: /* Normalize the suffix */ 739: ConvertToLowerCase (suffix); 740: } 741: 742: if ((strcmp (suffix, "gif")) && (strcmp (suffix, "xbm")) && 743: (strcmp (suffix, "xpm")) && (strcmp (suffix, "jpg")) && 744: (strcmp (suffix, "pdf")) && (strcmp (suffix, "png")) && 745: (strcmp (suffix, "tgz")) && (strcmp (suffix, "xpg")) && 746: (strcmp (suffix, "xpd")) && (strcmp (suffix, "ps")) && 747: (strcmp (suffix, "au")) && (strcmp (suffix, "html")) && 748: (strcmp (suffix, "htm")) && (strcmp (suffix, "shtml")) && 749: (strcmp (suffix, "txt")) && (strcmp (suffix, "css")) && 750: (strcmp (suffix, "eps"))) 751: return (FALSE); 752: else 753: return (TRUE); 754: } 755: else 756: return (FALSE); 757: } 758: 759: 760: /*---------------------------------------------------------------------- 1.24 cvs 761: ChopURL 762: Gives back a URL no longer than MAX_PRINT_URL_LENGTH chars (outputURL). 763: If inputURL is bigger than that size, outputURL receives 764: MAX_PRINT_URL_LENGTH / 2 chars from the beginning of inputURL, "...", 765: and MAX_PRINT_URL_LENGTH / 2 chars from the end of inputURL. 766: If inputURL is not longer than MAX_PRINT_URL_LENGTH chars, it gets 767: copied into outputURL. 768: N.B.: outputURL must point to a memory block of MAX_PRINT_URL_LENGTH 769: chars. 770: ----------------------------------------------------------------------*/ 771: #ifdef __STDC__ 1.34 cvs 772: void ChopURL (char *outputURL, const char *inputURL) 1.24 cvs 773: #else 774: void ChopURL (outputURL, inputURL) 1.34 cvs 775: char *outputURL; 776: const char *inputURL; 1.24 cvs 777: #endif 1.22 cvs 778: 1.24 cvs 779: { 780: int len; 1.9 cvs 781: 1.24 cvs 782: len = strlen (inputURL); 783: if (len <= MAX_PRINT_URL_LENGTH) 1.29 cvs 784: strcpy (outputURL, inputURL); 1.24 cvs 785: else 786: /* make a truncated urlName on the status window */ 787: { 788: strncpy (outputURL, inputURL, MAX_PRINT_URL_LENGTH / 2); 789: outputURL [MAX_PRINT_URL_LENGTH / 2] = EOS; 790: strcat (outputURL, "..."); 791: strcat (outputURL, &(inputURL[len - MAX_PRINT_URL_LENGTH / 2 ])); 792: } 1.25 cvs 793: } 794: 795: 796: /*---------------------------------------------------------------------- 797: scan 798: Scan a filename for its consituents 799: ----------------------------------- 800: 801: On entry, 802: name points to a document name which may be incomplete. 803: On exit, 804: absolute or relative may be nonzero (but not both). 805: host, fragment and access may be nonzero if they were specified. 806: Any which are nonzero point to zero terminated strings. 807: ----------------------------------------------------------------------*/ 808: #ifdef __STDC__ 809: static void scan (char * name, HTURI * parts) 810: #else /* __STDC__ */ 811: static void scan (name, parts) 812: char *name; 813: HTURI *parts; 814: 815: #endif /* __STDC__ */ 816: { 1.28 cvs 817: char * p; 818: char * after_access = name; 1.33 cvs 819: char used_sep; 1.32 cvs 820: 1.33 cvs 821: if (name && strchr (name, URL_SEP)) 822: { 823: used_sep = URL_SEP; 824: } 825: else 826: { 827: used_sep = DIR_SEP; 828: } 1.32 cvs 829: 1.28 cvs 830: memset(parts, '\0', sizeof(HTURI)); 831: /* Look for fragment identifier */ 832: if ((p = strrchr(name, '#')) != NULL) 833: { 834: *p++ = '\0'; 835: parts->fragment = p; 1.25 cvs 836: } 837: 1.28 cvs 838: for (p=name; *p; p++) 839: { 1.33 cvs 840: if (*p==used_sep || *p=='#' || *p=='?') 1.28 cvs 841: break; 1.32 cvs 842: if (*p==':') 1.28 cvs 843: { 844: *p = 0; 845: parts->access = after_access; /* Scheme has been specified */ 846: 847: /* The combination of gcc, the "-O" flag and the HP platform is 848: unhealthy. The following three lines is a quick & dirty fix, but is 849: not recommended. Rather, turn off "-O". */ 850: 851: /* after_access = p;*/ 852: /* while (*after_access == 0)*/ 853: /* after_access++;*/ 854: after_access = p+1; 855: if (0==strcasecmp("URL", parts->access)) 856: /* Ignore IETF's URL: pre-prefix */ 857: parts->access = NULL; 858: else 1.25 cvs 859: break; 860: } 861: } 862: 863: p = after_access; 1.33 cvs 864: if (*p==used_sep) 1.28 cvs 865: { 1.33 cvs 866: if (p[1]==used_sep) 1.28 cvs 867: { 1.25 cvs 868: parts->host = p+2; /* host has been specified */ 1.28 cvs 869: *p = 0; /* Terminate access */ 870: /* look for end of host name if any */ 1.33 cvs 871: p = strchr(parts->host,used_sep); 1.28 cvs 872: if (p) 873: { 1.25 cvs 874: *p=0; /* Terminate host */ 875: parts->absolute = p+1; /* Root has been found */ 1.28 cvs 876: } 877: } 878: else 879: /* Root found but no host */ 880: parts->absolute = p+1; 881: } 882: else 883: { 1.25 cvs 884: parts->relative = (*after_access) ? after_access : 0; /* zero for "" */ 1.28 cvs 885: } 1.25 cvs 886: } 887: 888: 889: /*---------------------------------------------------------------------- 1.28 cvs 890: AmayaParseUrl: parse a Name relative to another name 891: 892: This returns those parts of a name which are given (and requested) 893: substituting bits from the related name where necessary. 1.25 cvs 894: 1.28 cvs 895: On entry, 1.25 cvs 896: aName A filename given 897: relatedName A name relative to which aName is to be parsed. Give 898: it an empty string if aName is absolute. 899: wanted A mask for the bits which are wanted. 900: 1.28 cvs 901: On exit, 1.25 cvs 902: returns A pointer to a malloc'd string which MUST BE FREED 903: ----------------------------------------------------------------------*/ 904: #ifdef __STDC__ 1.34 cvs 905: char *AmayaParseUrl (const char *aName, char *relatedName, int wanted) 1.25 cvs 906: #else /* __STDC__ */ 1.28 cvs 907: char *AmayaParseUrl (aName, relatedName, wanted) 1.34 cvs 908: const char *aName; 1.28 cvs 909: char *relatedName; 910: int wanted; 1.25 cvs 911: 912: #endif /* __STDC__ */ 913: { 1.29 cvs 914: char *return_value; 915: char result[MAX_LENGTH]; 916: char name[MAX_LENGTH]; 917: char rel[MAX_LENGTH]; 918: char *p, *access; 919: HTURI given, related; 920: int len; 1.33 cvs 921: char used_sep; 922: char *used_str; 1.32 cvs 923: 1.33 cvs 924: if (strchr (aName, URL_SEP) || strchr (relatedName, URL_SEP) ) 925: { 926: used_str = URL_STR; 927: used_sep = URL_SEP; 928: } 1.32 cvs 929: else 1.33 cvs 930: { 931: used_str = DIR_STR; 932: used_sep = DIR_SEP; 933: } 1.32 cvs 934: 1.29 cvs 935: /* Make working copies of input strings to cut up: */ 936: return_value = NULL; 937: result[0] = 0; /* Clear string */ 938: strcpy (name, aName); 939: if (relatedName != NULL) 940: strcpy (rel, relatedName); 941: else 942: relatedName[0] = EOS; 943: 944: scan (name, &given); 945: scan (rel, &related); 946: access = given.access ? given.access : related.access; 947: if (wanted & AMAYA_PARSE_ACCESS) 948: if (access) 949: { 950: strcat (result, access); 951: if(wanted & AMAYA_PARSE_PUNCTUATION) 1.32 cvs 952: strcat (result, ":"); 1.29 cvs 953: } 954: 955: if (given.access && related.access) 956: /* If different, inherit nothing. */ 957: if (strcmp (given.access, related.access) != 0) 958: { 959: related.host = 0; 960: related.absolute = 0; 961: related.relative = 0; 962: related.fragment = 0; 963: } 964: 965: if (wanted & AMAYA_PARSE_HOST) 966: if(given.host || related.host) 967: { 968: if(wanted & AMAYA_PARSE_PUNCTUATION) 969: strcat (result, "//"); 970: strcat (result, given.host ? given.host : related.host); 971: } 972: 973: if (given.host && related.host) 974: /* If different hosts, inherit no path. */ 975: if (strcmp(given.host, related.host) != 0) 976: { 977: related.absolute = 0; 978: related.relative = 0; 979: related.fragment = 0; 980: } 981: 982: if (wanted & AMAYA_PARSE_PATH) 983: { 984: if (given.absolute) 985: { 986: /* All is given */ 987: if (wanted & AMAYA_PARSE_PUNCTUATION) 1.33 cvs 988: strcat (result, used_str); 1.29 cvs 989: strcat (result, given.absolute); 1.25 cvs 990: } 1.29 cvs 991: else if (related.absolute) 992: { 993: /* Adopt path not name */ 1.33 cvs 994: strcat (result, used_str); 1.29 cvs 995: strcat (result, related.absolute); 996: if (given.relative) 997: { 998: /* Search part? */ 999: p = strchr (result, '?'); 1000: if (!p) 1001: p=result+strlen(result)-1; 1.33 cvs 1002: for (; *p!=used_sep; p--); /* last / */ 1.29 cvs 1003: /* Remove filename */ 1004: p[1]=0; 1005: /* Add given one */ 1006: strcat (result, given.relative); 1007: /*SimplifyUrl (&result);*/ 1.25 cvs 1008: } 1009: } 1.29 cvs 1010: else if (given.relative) 1011: /* what we've got */ 1012: strcat (result, given.relative); 1013: else if (related.relative) 1014: strcat (result, related.relative); 1015: else 1016: /* No inheritance */ 1.33 cvs 1017: strcat (result, used_str); 1.25 cvs 1018: } 1.29 cvs 1019: 1020: if (wanted & AMAYA_PARSE_ANCHOR) 1021: if (given.fragment || related.fragment) 1022: { 1023: if (given.absolute && given.fragment) 1024: { 1025: /*Fixes for relURLs...*/ 1026: if (wanted & AMAYA_PARSE_PUNCTUATION) 1027: strcat (result, "#"); 1028: strcat (result, given.fragment); 1029: } 1030: else if (!(given.absolute) && !(given.fragment)) 1031: strcat (result, ""); 1032: else 1033: { 1034: if (wanted & AMAYA_PARSE_PUNCTUATION) 1035: strcat (result, "#"); 1036: strcat (result, given.fragment ? given.fragment : related.fragment); 1037: } 1038: } 1039: len = strlen (result); 1040: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL) 1041: strcpy (return_value, result); 1042: return (return_value); /* exactly the right length */ 1.25 cvs 1043: } 1044: 1045: /*---------------------------------------------------------------------- 1046: HTCanon 1047: Canonicalizes the URL in the following manner starting from the host 1048: pointer: 1049: 1050: 1) The host name is converted to lowercase 1051: 2) Chop off port if `:80' (http), `:70' (gopher), or `:21' (ftp) 1052: 1053: Return: OK The position of the current path part of the URL 1054: which might be the old one or a new one. 1055: 1056: ----------------------------------------------------------------------*/ 1057: #ifdef __STDC__ 1.28 cvs 1058: static char *HTCanon (char ** filename, char * host) 1.25 cvs 1059: #else /* __STDC__ */ 1.28 cvs 1060: static char *HTCanon (filename, host) 1061: char **filename; 1062: char *host; 1.25 cvs 1063: #endif /* __STDC__ */ 1064: { 1065: char *newname = NULL; 1066: char *port; 1067: char *strptr; 1068: char *path; 1069: char *access = host-3; 1.33 cvs 1070: char used_sep; 1.32 cvs 1071: 1072: 1.33 cvs 1073: if (*filename && strchr (*filename, URL_SEP)) 1074: { 1075: used_sep = URL_SEP; 1076: } 1077: else 1078: { 1079: used_sep = DIR_SEP; 1080: } 1.32 cvs 1081: 1.33 cvs 1082: while (access>*filename && *(access-1)!= used_sep) /* Find access method */ 1.25 cvs 1083: access--; 1.33 cvs 1084: if ((path = strchr(host, used_sep)) == NULL) /* Find path */ 1.25 cvs 1085: path = host + strlen(host); 1086: if ((strptr = strchr(host, '@')) != NULL && strptr<path) /* UserId */ 1087: host = strptr; 1.32 cvs 1088: if ((port = strchr(host, ':')) != NULL && port>path) /* Port number */ 1.25 cvs 1089: port = NULL; 1090: 1091: strptr = host; /* Convert to lower-case */ 1.33 cvs 1092: while (strptr<path) 1093: { 1.25 cvs 1094: *strptr = tolower(*strptr); 1095: strptr++; 1.33 cvs 1096: } 1.25 cvs 1097: 1098: /* Does the URL contain a full domain name? This also works for a 1099: numerical host name. The domain name is already made lower-case 1100: and without a trailing dot. */ 1101: { 1.33 cvs 1102: char *dot = port ? port : path; 1103: if (dot > *filename && *--dot=='.') 1104: { 1105: char *orig=dot, *dest=dot+1; 1106: while((*orig++ = *dest++)); 1107: if (port) port--; 1108: path--; 1.25 cvs 1109: } 1110: } 1111: /* Chop off port if `:', `:80' (http), `:70' (gopher), or `:21' (ftp) */ 1.33 cvs 1112: if (port) 1113: { 1114: if (!*(port+1) || *(port+1)==used_sep) 1115: { 1116: if (!newname) 1117: { 1.25 cvs 1118: char *orig=port, *dest=port+1; 1119: while((*orig++ = *dest++)); 1.33 cvs 1120: } 1121: } 1122: else if ((!strncmp(access, "http", 4) && 1123: (*(port+1)=='8'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) || 1124: (!strncmp(access, "gopher", 6) && 1125: (*(port+1)=='7'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) || 1126: (!strncmp(access, "ftp", 3) && 1127: (*(port+1)=='2'&&*(port+2)=='1'&&(*(port+3)==used_sep||!*(port+3))))) { 1128: if (!newname) 1129: { 1130: char *orig=port, *dest=port+3; 1131: while((*orig++ = *dest++)); 1132: /* Update path position, Henry Minsky */ 1133: path -= 3; 1.25 cvs 1134: } 1.33 cvs 1135: } 1136: else if (newname) 1137: strncat(newname, port, (int) (path-port)); 1138: } 1.25 cvs 1139: 1.33 cvs 1140: if (newname) 1141: { 1.25 cvs 1142: char *newpath = newname+strlen(newname); 1143: strcat(newname, path); 1144: path = newpath; 1.28 cvs 1145: /* Free old copy */ 1146: TtaFreeMemory(*filename); 1.25 cvs 1147: *filename = newname; 1.33 cvs 1148: } 1.25 cvs 1149: return path; 1150: } 1151: 1152: 1153: /*---------------------------------------------------------------------- 1.29 cvs 1154: SimplifyUrl: simplify a URI 1.32 cvs 1155: A URI is allowed to contain the sequence xxx/../ which may be 1156: replaced by "" , and the sequence "/./" which may be replaced by DIR_STR. 1.28 cvs 1157: Simplification helps us recognize duplicate URIs. 1.25 cvs 1158: 1.28 cvs 1159: Thus, /etc/junk/../fred becomes /etc/fred 1160: /etc/junk/./fred becomes /etc/junk/fred 1.25 cvs 1161: 1.28 cvs 1162: but we should NOT change 1163: http://fred.xxx.edu/../.. 1.25 cvs 1164: 1165: or ../../albert.html 1166: 1.28 cvs 1167: In order to avoid empty URLs the following URLs become: 1.25 cvs 1168: 1169: /fred/.. becomes /fred/.. 1170: /fred/././.. becomes /fred/.. 1171: /fred/.././junk/.././ becomes /fred/.. 1172: 1.28 cvs 1173: If more than one set of `://' is found (several proxies in cascade) then 1174: only the part after the last `://' is simplified. 1.25 cvs 1175: 1.28 cvs 1176: Returns: A string which might be the old one or a new one. 1.25 cvs 1177: ----------------------------------------------------------------------*/ 1178: #ifdef __STDC__ 1.29 cvs 1179: void SimplifyUrl (char ** url) 1.25 cvs 1180: #else /* __STDC__ */ 1.29 cvs 1181: void SimplifyUrl (url) 1.28 cvs 1182: char **url; 1.25 cvs 1183: #endif /* __STDC__ */ 1184: { 1.28 cvs 1185: char *path, *p; 1186: char *newptr, *access; 1187: char *orig, *dest, *end; 1188: 1.33 cvs 1189: char used_sep; 1.32 cvs 1190: 1191: 1.28 cvs 1192: if (!url || !*url) 1193: return; 1194: 1.33 cvs 1195: if (strchr (*url, URL_SEP)) 1196: { 1197: used_sep = URL_SEP; 1198: } 1.32 cvs 1199: else 1.33 cvs 1200: { 1201: used_sep = DIR_SEP; 1202: } 1.32 cvs 1203: 1.28 cvs 1204: /* Find any scheme name */ 1205: if ((path = strstr(*url, "://")) != NULL) 1.33 cvs 1206: { 1207: /* Find host name */ 1.28 cvs 1208: access = *url; 1209: while (access<path && (*access=tolower(*access))) 1210: access++; 1211: path += 3; 1212: while ((newptr = strstr(path, "://")) != NULL) 1213: /* For proxies */ 1214: path = newptr+3; 1215: /* We have a host name */ 1216: path = HTCanon(url, path); 1.25 cvs 1217: } 1.28 cvs 1218: else if ((path = strstr(*url, ":/")) != NULL) 1219: path += 2; 1220: else 1221: path = *url; 1.25 cvs 1222: 1.33 cvs 1223: if (*path == used_sep && *(path+1)==used_sep) 1.28 cvs 1224: /* Some URLs start //<foo> */ 1225: path += 1; 1226: else if (!strncmp(path, "news:", 5)) 1227: { 1228: newptr = strchr(path+5, '@'); 1229: if (!newptr) 1230: newptr = path + 5; 1231: while (*newptr) 1232: { 1233: /* Make group or host lower case */ 1234: *newptr = tolower (*newptr); 1235: newptr++; 1.25 cvs 1236: } 1.28 cvs 1237: /* Doesn't need to do any more */ 1238: return; 1.25 cvs 1239: } 1.28 cvs 1240: 1241: if ((p = path)) 1242: { 1243: if (!((end = strchr (path, ';')) || (end = strchr (path, '?')) || 1244: (end = strchr (path, '#')))) 1245: end = path + strlen (path); 1246: 1247: /* Parse string second time to simplify */ 1248: p = path; 1249: while (p < end) 1250: { 1.33 cvs 1251: if (*p==used_sep) 1.28 cvs 1252: { 1.33 cvs 1253: if (p > *url && *(p+1) == '.' && (*(p+2) == used_sep || !*(p+2))) 1.28 cvs 1254: { 1255: orig = p + 1; 1.33 cvs 1256: dest = (*(p+2)!=used_sep) ? p+2 : p+3; 1.28 cvs 1257: while ((*orig++ = *dest++)); /* Remove a slash and a dot */ 1258: end = orig - 1; 1259: } 1.33 cvs 1260: else if (*(p+1)=='.' && *(p+2)=='.' && (*(p+3)==used_sep || !*(p+3))) 1.28 cvs 1261: { 1262: newptr = p; 1.33 cvs 1263: while (newptr>path && *--newptr!=used_sep); /* prev slash */ 1.28 cvs 1264: if (strncmp(newptr, "/../", 4)) 1265: { 1266: orig = newptr + 1; 1.33 cvs 1267: dest = (*(p+3)!=used_sep) ? p+3 : p+4; 1.28 cvs 1268: while ((*orig++ = *dest++)); /* Remove /xxx/.. */ 1269: end = orig-1; 1270: /* Start again with prev slash */ 1271: p = newptr; 1.25 cvs 1272: } 1.28 cvs 1273: else 1.25 cvs 1274: p++; 1.28 cvs 1275: } 1.33 cvs 1276: else if (*(p+1) == used_sep) 1.28 cvs 1277: { 1.33 cvs 1278: while (*(p+1) == used_sep) 1.28 cvs 1279: { 1280: orig = p; 1281: dest = p + 1; 1282: while ((*orig++ = *dest++)); /* Remove multiple /'s */ 1283: end = orig-1; 1284: } 1285: } 1286: else 1.25 cvs 1287: p++; 1.28 cvs 1288: } 1289: else 1290: p++; 1.25 cvs 1291: } 1292: } 1.28 cvs 1293: return; 1294: } 1295: 1296: 1297: /*---------------------------------------------------------------------- 1298: NormalizeFile normalizes local names. 1299: Return TRUE if target and src differ. 1300: ----------------------------------------------------------------------*/ 1301: #ifdef __STDC__ 1302: boolean NormalizeFile (char *src, char *target) 1303: #else 1304: boolean NormalizeFile (src, target) 1305: char *src; 1306: char *target; 1307: 1308: #endif 1309: { 1310: char *s; 1311: boolean change; 1312: 1313: change = FALSE; 1314: if (src[0] == '~') 1315: { 1316: /* replace ~ */ 1317: s = (char *) TtaGetEnvString ("HOME"); 1318: strcpy (target, s); 1319: strcat (target, &src[1]); 1320: change = TRUE; 1321: } 1322: else if (strncmp (src, "file:", 5) == 0) 1323: { 1324: /* remove the prefix file: */ 1325: if (src[5] == EOS) 1326: strcpy (target, DIR_STR); 1327: else if (src[0] == '~') 1328: { 1329: /* replace ~ */ 1330: s = (char *) TtaGetEnvString ("HOME"); 1331: strcpy (target, s); 1332: strcat (target, &src[5]); 1333: } 1334: else 1335: strcpy (target, &src[5]); 1336: change = TRUE; 1337: } 1338: else 1339: strcpy (target, src); 1340: 1341: /* remove /../ and /./ */ 1.29 cvs 1342: SimplifyUrl (&target); 1.28 cvs 1343: return (change); 1.25 cvs 1344: } 1345: 1.28 cvs 1346: 1.25 cvs 1347: /*---------------------------------------------------------------------- 1.31 cvs 1348: MakeRelativeURL: make relative name 1.25 cvs 1349: 1.28 cvs 1350: This function creates and returns a string which gives an expression of 1351: one address as related to another. Where there is no relation, an absolute 1352: address is retured. 1.25 cvs 1353: 1.28 cvs 1354: On entry, 1.25 cvs 1355: Both names must be absolute, fully qualified names of nodes 1356: (no fragment bits) 1357: 1.28 cvs 1358: On exit, 1.25 cvs 1359: The return result points to a newly allocated name which, if 1360: parsed by AmayaParseUrl relative to relatedName, will yield aName. 1361: The caller is responsible for freeing the resulting name later. 1362: ----------------------------------------------------------------------*/ 1363: #ifdef __STDC__ 1.31 cvs 1364: char *MakeRelativeURL (char *aName, char *relatedName) 1.25 cvs 1365: #else /* __STDC__ */ 1.31 cvs 1366: char *MakeRelativeURL (aName, relatedName) 1.28 cvs 1367: char *aName; 1368: char *relatedName; 1.25 cvs 1369: #endif /* __STDC__ */ 1370: { 1.39 ! cvs 1371: char *return_value; ! 1372: char result[MAX_LENGTH]; 1.29 cvs 1373: char *p; 1.34 cvs 1374: char *q; 1.29 cvs 1375: char *after_access; 1376: char *last_slash = NULL; 1377: int slashes, levels, len; 1378: 1379: if (aName == NULL || relatedName == NULL) 1380: return (NULL); 1381: 1382: slashes = 0; 1383: after_access = NULL; 1384: p = aName; 1385: q = relatedName; 1386: for (; *p && (*p == *q); p++, q++) 1.27 cvs 1387: { 1388: /* Find extent of match */ 1.32 cvs 1389: if (*p == ':') 1.29 cvs 1390: after_access = p + 1; 1.28 cvs 1391: if (*p == DIR_SEP) 1.27 cvs 1392: { 1.29 cvs 1393: /* memorize the last slash position and count them */ 1.27 cvs 1394: last_slash = p; 1395: slashes++; 1.25 cvs 1396: } 1397: } 1398: 1.31 cvs 1399: /* q, p point to the first non-matching character or zero */ 1400: if (*q == EOS) 1401: { 1402: /* New name is a subset of the related name */ 1403: /* exactly the right length */ 1404: len = strlen (p); 1405: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL) 1406: strcpy (return_value, p); 1407: } 1408: else if ((slashes < 2 && after_access == NULL) 1409: || (slashes < 3 && after_access != NULL)) 1410: { 1411: /* Two names whitout common path */ 1412: /* exactly the right length */ 1413: len = strlen (aName); 1414: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL) 1415: strcpy (return_value, aName); 1416: } 1417: else 1418: { 1419: /* Some path in common */ 1420: if (slashes == 3 && strncmp (aName, "http:", 5) == 0) 1421: /* just the same server */ 1422: strcpy (result, last_slash); 1423: else 1424: { 1425: levels= 0; 1426: for (; *q && (*q != '#'); q++) 1427: if (*q == DIR_SEP) 1428: levels++; 1429: 1430: result[0] = 0; 1431: for (;levels; levels--) 1432: strcat (result, "../"); 1433: strcat (result, last_slash+1); 1434: } 1435: 1436: /* exactly the right length */ 1437: len = strlen (result); 1438: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL) 1439: strcpy (return_value, result); 1.25 cvs 1440: } 1.29 cvs 1441: return (return_value); 1.24 cvs 1442: } 1.35 cvs 1443: 1444: