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