Annotation of libwww/Library/src/HTParse.c, revision 2.26
1.1 timbl 1: /* Parse HyperText Document Address HTParse.c
2: ** ================================
2.26 ! frystyk 3: **
! 4: ** history:
! 5: ** May 12 94 TAB added as legal char in HTCleanTelnetString
! 6: **
1.1 timbl 7: */
2.26 ! frystyk 8: #if 0
1.1 timbl 9: #include "HTUtils.h"
2.26 ! frystyk 10: #endif
1.1 timbl 11: #include "HTParse.h"
12: #include "tcp.h"
13:
2.6 timbl 14: #define HEX_ESCAPE '%'
15:
1.1 timbl 16: struct struct_parts {
2.20 timbl 17: char * access; /* Now known as "scheme" */
1.1 timbl 18: char * host;
19: char * absolute;
20: char * relative;
21: /* char * search; no - treated as part of path */
22: char * anchor;
23: };
24:
25:
26: /* Strip white space off a string
27: ** ------------------------------
28: **
29: ** On exit,
30: ** Return value points to first non-white character, or to 0 if none.
31: ** All trailing white space is OVERWRITTEN with zero.
32: */
33:
2.13 luotonen 34: PUBLIC char * HTStrip ARGS1(char *, s)
1.1 timbl 35: {
36: #define SPACE(c) ((c==' ')||(c=='\t')||(c=='\n'))
37: char * p=s;
2.13 luotonen 38: if (!s) return NULL; /* Doesn't dump core if NULL */
39: for(p=s;*p;p++); /* Find end of string */
1.1 timbl 40: for(p--;p>=s;p--) {
41: if(SPACE(*p)) *p=0; /* Zap trailing blanks */
42: else break;
43: }
44: while(SPACE(*s))s++; /* Strip leading blanks */
45: return s;
46: }
47:
48:
49: /* Scan a filename for its consituents
50: ** -----------------------------------
51: **
52: ** On entry,
53: ** name points to a document name which may be incomplete.
54: ** On exit,
55: ** absolute or relative may be nonzero (but not both).
56: ** host, anchor and access may be nonzero if they were specified.
57: ** Any which are nonzero point to zero terminated strings.
58: */
59: #ifdef __STDC__
60: PRIVATE void scan(char * name, struct struct_parts *parts)
61: #else
62: PRIVATE void scan(name, parts)
63: char * name;
64: struct struct_parts *parts;
65: #endif
66: {
67: char * after_access;
68: char * p;
69: int length = strlen(name);
70:
71: parts->access = 0;
72: parts->host = 0;
73: parts->absolute = 0;
74: parts->relative = 0;
75: parts->anchor = 0;
76:
77: after_access = name;
78: for(p=name; *p; p++) {
79: if (*p==':') {
80: *p = 0;
2.20 timbl 81: parts->access = after_access; /* Scheme has been specified */
1.1 timbl 82: after_access = p+1;
2.22 luotonen 83: if (0==strcasecomp("URL", parts->access)) {
2.20 timbl 84: parts->access = NULL; /* Ignore IETF's URL: pre-prefix */
85: } else break;
1.1 timbl 86: }
2.20 timbl 87: if (*p=='/') break; /* Access has not been specified */
1.1 timbl 88: if (*p=='#') break;
89: }
90:
91: for(p=name+length-1; p>=name; p--) {
92: if (*p =='#') {
93: parts->anchor=p+1;
94: *p=0; /* terminate the rest */
95: }
96: }
97: p = after_access;
98: if (*p=='/'){
99: if (p[1]=='/') {
100: parts->host = p+2; /* host has been specified */
101: *p=0; /* Terminate access */
102: p=strchr(parts->host,'/'); /* look for end of host name if any */
103: if(p) {
104: *p=0; /* Terminate host */
105: parts->absolute = p+1; /* Root has been found */
106: }
107: } else {
108: parts->absolute = p+1; /* Root found but no host */
109: }
110: } else {
111: parts->relative = (*after_access) ? after_access : 0; /* zero for "" */
112: }
113:
2.16 timbl 114: #ifdef OLD_CODE
1.1 timbl 115: /* Access specified but no host: the anchor was not really one
2.16 timbl 116: e.g. news:j462#36487@foo.bar -- JFG 10/jul/92, from bug report */
117: /* This kludge doesn't work for example when coming across
118: file:/usr/local/www/fred#123
119: which loses its anchor. Correct approach in news is to
120: escape weird characters not allowed in URL. TBL 21/dec/93
121: */
1.1 timbl 122: if (parts->access && ! parts->host && parts->anchor) {
123: *(parts->anchor - 1) = '#'; /* Restore the '#' in the address */
124: parts->anchor = 0;
125: }
2.16 timbl 126: #endif
1.1 timbl 127:
128: #ifdef NOT_DEFINED /* search is just treated as part of path */
129: {
130: char *p = relative ? relative : absolute;
131: if (p) {
132: char * q = strchr(p, '?'); /* Any search string? */
133: if (q) {
134: *q = 0; /* If so, chop that off. */
135: parts->search = q+1;
136: }
137: }
138: }
139: #endif
140: } /*scan */
141:
142:
143: /* Parse a Name relative to another name
144: ** -------------------------------------
145: **
146: ** This returns those parts of a name which are given (and requested)
147: ** substituting bits from the related name where necessary.
148: **
149: ** On entry,
150: ** aName A filename given
151: ** relatedName A name relative to which aName is to be parsed
152: ** wanted A mask for the bits which are wanted.
153: **
154: ** On exit,
155: ** returns A pointer to a malloc'd string which MUST BE FREED
156: */
157: #ifdef __STDC__
158: char * HTParse(const char * aName, const char * relatedName, int wanted)
159: #else
160: char * HTParse(aName, relatedName, wanted)
161: char * aName;
162: char * relatedName;
163: int wanted;
164: #endif
165:
166: {
167: char * result = 0;
168: char * return_value = 0;
169: int len;
170: char * name = 0;
171: char * rel = 0;
172: char * p;
2.12 timbl 173: char * access;
1.1 timbl 174: struct struct_parts given, related;
175:
176: /* Make working copies of input strings to cut up:
177: */
178: len = strlen(aName)+strlen(relatedName)+10;
179: result=(char *)malloc(len); /* Lots of space: more than enough */
180: if (result == NULL) outofmem(__FILE__, "HTParse");
181:
182: StrAllocCopy(name, aName);
183: StrAllocCopy(rel, relatedName);
184:
185: scan(name, &given);
186: scan(rel, &related);
187: result[0]=0; /* Clear string */
2.12 timbl 188: access = given.access ? given.access : related.access;
1.1 timbl 189: if (wanted & PARSE_ACCESS)
2.12 timbl 190: if (access) {
191: strcat(result, access);
1.1 timbl 192: if(wanted & PARSE_PUNCTUATION) strcat(result, ":");
193: }
194:
195: if (given.access && related.access) /* If different, inherit nothing. */
196: if (strcmp(given.access, related.access)!=0) {
197: related.host=0;
198: related.absolute=0;
199: related.relative=0;
200: related.anchor=0;
201: }
202:
203: if (wanted & PARSE_HOST)
204: if(given.host || related.host) {
2.12 timbl 205: char * tail = result + strlen(result);
1.1 timbl 206: if(wanted & PARSE_PUNCTUATION) strcat(result, "//");
207: strcat(result, given.host ? given.host : related.host);
2.12 timbl 208: #define CLEAN_URLS
209: #ifdef CLEAN_URLS
210: /* Ignore default port numbers, and trailing dots on FQDNs
211: which will only cause identical adreesses to look different */
212: {
213: char * p;
214: p = strchr(tail, ':');
215: if (p && access) { /* Port specified */
216: if ( ( strcmp(access, "http") == 0
217: && strcmp(p, ":80") == 0 )
218: ||
219: ( strcmp(access, "gopher") == 0
220: && strcmp(p, ":70") == 0 )
221: )
222: *p = (char)0; /* It is the default: ignore it */
223: }
224: if (!p) p = tail + strlen(tail); /* After hostname */
2.21 frystyk 225: if (*p) { /* Henrik 17/04-94 */
226: p--; /* End of hostname */
227: if (*p == '.') *p = (char)0; /* chop final . */
228: }
2.12 timbl 229: }
230: #endif
1.1 timbl 231: }
232:
233: if (given.host && related.host) /* If different hosts, inherit no path. */
234: if (strcmp(given.host, related.host)!=0) {
235: related.absolute=0;
236: related.relative=0;
237: related.anchor=0;
238: }
239:
240: if (wanted & PARSE_PATH) {
241: if(given.absolute) { /* All is given */
242: if(wanted & PARSE_PUNCTUATION) strcat(result, "/");
243: strcat(result, given.absolute);
244: } else if(related.absolute) { /* Adopt path not name */
245: strcat(result, "/");
246: strcat(result, related.absolute);
247: if (given.relative) {
248: p = strchr(result, '?'); /* Search part? */
249: if (!p) p=result+strlen(result)-1;
250: for (; *p!='/'; p--); /* last / */
251: p[1]=0; /* Remove filename */
252: strcat(result, given.relative); /* Add given one */
253: HTSimplify (result);
254: }
255: } else if(given.relative) {
256: strcat(result, given.relative); /* what we've got */
257: } else if(related.relative) {
258: strcat(result, related.relative);
259: } else { /* No inheritance */
260: strcat(result, "/");
261: }
262: }
263:
264: if (wanted & PARSE_ANCHOR)
265: if(given.anchor || related.anchor) {
266: if(wanted & PARSE_PUNCTUATION) strcat(result, "#");
267: strcat(result, given.anchor ? given.anchor : related.anchor);
268: }
269: free(rel);
270: free(name);
271:
272: StrAllocCopy(return_value, result);
273: free(result);
274: return return_value; /* exactly the right length */
275: }
276:
2.11 timbl 277:
2.21 frystyk 278: #if 0 /* NOT USED FOR THE MOMENT */
2.15 luotonen 279: /*
280: ** As strcpy() but guaranteed to work correctly
281: ** with overlapping parameters. AL 7 Feb 1994
282: */
283: PRIVATE void ari_strcpy ARGS2(char *, to,
284: char *, from)
285: {
286: char * tmp;
287:
288: if (!to || !from) return;
289:
290: tmp = (char*)malloc(strlen(from)+1);
291: if (!tmp) outofmem(__FILE__, "my_strcpy");
292:
293: strcpy(tmp, from);
294: strcpy(to, tmp);
295: free(tmp);
296: }
2.21 frystyk 297: #endif
298:
2.20 timbl 299:
300: /* Simplify a URI
301: // --------------
302: // A URI is allowed to contain the seqeunce xxx/../ which may be
1.1 timbl 303: // replaced by "" , and the seqeunce "/./" which may be replaced by "/".
2.20 timbl 304: // Simplification helps us recognize duplicate URIs.
1.1 timbl 305: //
306: // Thus, /etc/junk/../fred becomes /etc/fred
307: // /etc/junk/./fred becomes /etc/junk/fred
2.11 timbl 308: //
309: // but we should NOT change
310: // http://fred.xxx.edu/../..
311: //
312: // or ../../albert.html
2.26 ! frystyk 313: //
! 314: // In the same manner, the following prefixed are preserved:
! 315: //
! 316: // ./<etc>
! 317: // //<etc>
! 318: //
! 319: // In order to avoid empty URLs the following URLs become:
! 320: //
! 321: // /fred/.. becomes /fred/..
! 322: // /fred/././.. becomes /fred/..
! 323: //
1.1 timbl 324: */
2.14 luotonen 325: PUBLIC void HTSimplify ARGS1(char *, filename)
1.1 timbl 326: {
2.19 frystyk 327: int tokcnt = 0;
328: char *strptr;
329: char *urlptr;
330: if (!filename || !*filename) /* Just to be sure! */
331: return;
332:
333: /* Skip prefix, starting ./ and starting ///<etc> */
334: urlptr = strstr(filename, "://"); /* Find prefix */
335: urlptr = urlptr ? urlptr+3 : filename;
336: if (*urlptr == '.' && *(urlptr+1) == '/') /* Starting ./<etc> */
337: urlptr += 2;
338: else if (*urlptr == '/') { /* Some URLs start //<file> */
339: while (*++urlptr == '/');
340: }
341: if (!*urlptr)
342: return;
343:
344: /* Now we have the string we want to work with */
345: strptr = urlptr;
346: while (*strptr++) { /* Count number of delimiters */
347: if (*strptr == '/')
348: tokcnt++;
349: }
350: {
351: BOOL slashtail = NO;
352: char *empty = "";
353: char *url = NULL;
354: char **tokptr;
355: char **tokstart;
2.26 ! frystyk 356: char *first; /* Points to the first `real' segment in the URL */
2.19 frystyk 357: StrAllocCopy(url, urlptr);
2.26 ! frystyk 358: first = url;
! 359: while (*first && (*first == '/' || *first == '.'))
! 360: first++;
2.19 frystyk 361:
362: /* Does the URL end with a slash? */
363: if(*(filename+strlen(filename)-1) == '/')
364: slashtail = YES;
365:
366: /* I allocate cnt+2 as I don't know if the url is terminated by '/' */
367: if ((tokstart = (char **) calloc(tokcnt+2, sizeof(char *))) == NULL)
368: outofmem(__FILE__, "HTSimplify");
369:
370: /* Read the tokens forwards */
371: tokptr = tokstart;
372: *tokptr++ = strtok(url, "/");
373: while ((strptr = strtok(NULL, "/")) != NULL)
374: *tokptr++ = strptr;
375:
376: /* Scan backwards for '.' and '..' */
377: tokptr--;
378: while(tokptr >= tokstart) {
379: if (!strcmp(*tokptr, ".")) {
380: *tokptr = empty;
381: } else if (!strcmp(*tokptr, "..")) {
382: char **pptr = tokptr-1;
383: while (pptr >= tokstart) {
2.26 ! frystyk 384: if (**pptr && strcmp(*pptr, "..") && strcmp(*pptr, ".") &&
! 385: strcmp(*pptr, first)) {
2.19 frystyk 386: *pptr = empty;
387: *tokptr = empty;
388: break;
389: }
390: pptr--;
391: }
392: }
393: tokptr--;
394: }
395:
396: /* Write the rest out forwards */
397: *urlptr = '\0';
398: strcat(urlptr, *++tokptr);
399: while (*++tokptr) {
400: if (**tokptr) {
401: strcat(urlptr, "/");
402: strcat(urlptr, *tokptr);
403: }
404: }
405: if (slashtail == YES)
406: strcat(urlptr, "/");
407: free(url);
408: free(tokstart);
409: }
410: if (TRACE)
2.21 frystyk 411: fprintf(stderr, "HTSimplify.. `%s\'\n", filename);
2.19 frystyk 412: }
413: #ifdef OLD_CODE
2.17 frystyk 414: char * p = filename;
1.1 timbl 415: char * q;
2.17 frystyk 416:
417: if (p) {
418: while (*p && (*p == '/' || *p == '.')) /* Pass starting / or .'s */
419: p++;
420: while(*p) {
421: if (*p=='/') {
1.1 timbl 422: if ((p[1]=='.') && (p[2]=='.') && (p[3]=='/' || !p[3] )) {
2.11 timbl 423: for (q=p-1; (q>=filename) && (*q!='/'); q--); /* prev slash */
424: if (q[0]=='/' && 0!=strncmp(q, "/../", 4)
425: &&!(q-1>filename && q[-1]=='/')) {
2.15 luotonen 426: ari_strcpy(q, p+3); /* Remove /xxx/.. */
1.1 timbl 427: if (!*filename) strcpy(filename, "/");
428: p = q-1; /* Start again with prev slash */
2.11 timbl 429: } else { /* xxx/.. leave it! */
2.9 timbl 430: #ifdef BUG_CODE
2.15 luotonen 431: ari_strcpy(filename, p[3] ? p+4 : p+3); /* rm xxx/../ */
1.1 timbl 432: p = filename; /* Start again */
2.9 timbl 433: #endif
1.1 timbl 434: }
435: } else if ((p[1]=='.') && (p[2]=='/' || !p[2])) {
2.15 luotonen 436: ari_strcpy(p, p+2); /* Remove a slash and a dot */
2.13 luotonen 437: } else if (p[-1] != ':') {
438: while (p[1] == '/') {
2.15 luotonen 439: ari_strcpy(p, p+1); /* Remove multiple slashes */
2.13 luotonen 440: }
1.1 timbl 441: }
2.17 frystyk 442: }
443: p++;
444: } /* end while (*p) */
445: } /* end if (p) */
1.1 timbl 446: }
2.19 frystyk 447: #endif /* OLD_CODE */
1.1 timbl 448:
449:
450: /* Make Relative Name
451: ** ------------------
452: **
453: ** This function creates and returns a string which gives an expression of
454: ** one address as related to another. Where there is no relation, an absolute
455: ** address is retured.
456: **
457: ** On entry,
458: ** Both names must be absolute, fully qualified names of nodes
459: ** (no anchor bits)
460: **
461: ** On exit,
462: ** The return result points to a newly allocated name which, if
463: ** parsed by HTParse relative to relatedName, will yield aName.
464: ** The caller is responsible for freeing the resulting name later.
465: **
466: */
467: #ifdef __STDC__
468: char * HTRelative(const char * aName, const char *relatedName)
469: #else
470: char * HTRelative(aName, relatedName)
471: char * aName;
472: char * relatedName;
473: #endif
474: {
475: char * result = 0;
476: CONST char *p = aName;
477: CONST char *q = relatedName;
478: CONST char * after_access = 0;
479: CONST char * path = 0;
480: CONST char * last_slash = 0;
481: int slashes = 0;
482:
483: for(;*p; p++, q++) { /* Find extent of match */
484: if (*p!=*q) break;
485: if (*p==':') after_access = p+1;
486: if (*p=='/') {
487: last_slash = p;
488: slashes++;
489: if (slashes==3) path=p;
490: }
491: }
492:
493: /* q, p point to the first non-matching character or zero */
494:
495: if (!after_access) { /* Different access */
496: StrAllocCopy(result, aName);
497: } else if (slashes<3){ /* Different nodes */
498: StrAllocCopy(result, after_access);
2.21 frystyk 499: #if 0
1.1 timbl 500: } else if (slashes==3){ /* Same node, different path */
501: StrAllocCopy(result, path);
2.21 frystyk 502: #endif
1.1 timbl 503: } else { /* Some path in common */
504: int levels= 0;
505: for(; *q && (*q!='#'); q++) if (*q=='/') levels++;
506: result = (char *)malloc(3*levels + strlen(last_slash) + 1);
507: if (result == NULL) outofmem(__FILE__, "HTRelative");
508: result[0]=0;
509: for(;levels; levels--)strcat(result, "../");
510: strcat(result, last_slash+1);
511: }
2.21 frystyk 512: if (TRACE) fprintf(stderr,
513: "HTRelative.. `%s' expressed relative to `%s' is `%s'\n",
514: aName, relatedName, result);
1.1 timbl 515: return result;
516: }
2.1 timbl 517:
518:
2.6 timbl 519: /* Escape undesirable characters using % HTEscape()
520: ** -------------------------------------
521: **
522: ** This function takes a pointer to a string in which
523: ** some characters may be unacceptable unescaped.
524: ** It returns a string which has these characters
525: ** represented by a '%' character followed by two hex digits.
526: **
2.20 timbl 527: ** In the tradition of being conservative in what you do and liberal
528: ** in what you accept, we encode some characters which in fact are
529: ** allowed in URLs unencoded -- so DON'T use the table below for
530: ** parsing!
531: **
2.6 timbl 532: ** Unlike HTUnEscape(), this routine returns a malloced string.
2.20 timbl 533: **
2.6 timbl 534: */
535:
2.20 timbl 536: /* Not BOTH static AND const at the same time in gcc :-(, Henrik 18/03-94
537: ** code gen error in gcc when making random access to
538: ** static const table(!!) */
2.19 frystyk 539: /* PRIVATE CONST unsigned char isAcceptable[96] = */
540: PRIVATE unsigned char isAcceptable[96] =
2.6 timbl 541:
2.20 timbl 542: /* Overencodes */
2.6 timbl 543: /* Bit 0 xalpha -- see HTFile.h
544: ** Bit 1 xpalpha -- as xalpha but with plus.
2.20 timbl 545: ** Bit 2 ... path -- as xpalpha but with /
2.6 timbl 546: */
547: /* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
548: { 0,0,0,0,0,0,0,0,0,0,7,6,0,7,7,4, /* 2x !"#$%&'()*+,-./ */
549: 7,7,7,7,7,7,7,7,7,7,0,0,0,0,0,0, /* 3x 0123456789:;<=>? */
550: 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /* 4x @ABCDEFGHIJKLMNO */
551: 7,7,7,7,7,7,7,7,7,7,7,0,0,0,0,7, /* 5X PQRSTUVWXYZ[\]^_ */
552: 0,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /* 6x `abcdefghijklmno */
553: 7,7,7,7,7,7,7,7,7,7,7,0,0,0,0,0 }; /* 7X pqrstuvwxyz{\}~ DEL */
554:
555: PRIVATE char *hex = "0123456789ABCDEF";
556:
2.8 timbl 557: PUBLIC char * HTEscape ARGS2 (CONST char *, str,
2.6 timbl 558: unsigned char, mask)
559: {
560: #define ACCEPTABLE(a) ( a>=32 && a<128 && ((isAcceptable[a-32]) & mask))
561: CONST char * p;
562: char * q;
563: char * result;
564: int unacceptable = 0;
565: for(p=str; *p; p++)
566: if (!ACCEPTABLE((unsigned char)TOASCII(*p)))
567: unacceptable++;
568: result = (char *) malloc(p-str + unacceptable+ unacceptable + 1);
569: if (result == NULL) outofmem(__FILE__, "HTEscape");
570: for(q=result, p=str; *p; p++) {
571: unsigned char a = TOASCII(*p);
572: if (!ACCEPTABLE(a)) {
573: *q++ = HEX_ESCAPE; /* Means hex commming */
574: *q++ = hex[a >> 4];
575: *q++ = hex[a & 15];
576: }
577: else *q++ = *p;
578: }
579: *q++ = 0; /* Terminate */
580: return result;
581: }
582:
583:
2.1 timbl 584: /* Decode %xx escaped characters HTUnEscape()
585: ** -----------------------------
586: **
587: ** This function takes a pointer to a string in which some
588: ** characters may have been encoded in %xy form, where xy is
589: ** the acsii hex code for character 16x+y.
590: ** The string is converted in place, as it will never grow.
591: */
592:
593: PRIVATE char from_hex ARGS1(char, c)
594: {
2.6 timbl 595: return c >= '0' && c <= '9' ? c - '0'
596: : c >= 'A' && c <= 'F'? c - 'A' + 10
597: : c - 'a' + 10; /* accept small letters just in case */
2.1 timbl 598: }
599:
600: PUBLIC char * HTUnEscape ARGS1( char *, str)
601: {
602: char * p = str;
603: char * q = str;
2.25 frystyk 604:
605: if (!str) { /* Just for safety ;-) */
606: if (TRACE)
607: fprintf(stderr, "HTUnEscape.. Called with NULL argument.\n");
608: return "";
609: }
2.1 timbl 610: while(*p) {
2.6 timbl 611: if (*p == HEX_ESCAPE) {
2.1 timbl 612: p++;
613: if (*p) *q = from_hex(*p++) * 16;
614: if (*p) *q = FROMASCII(*q + from_hex(*p++));
615: q++;
616: } else {
617: *q++ = *p++;
618: }
619: }
620:
621: *q++ = 0;
622: return str;
623:
624: } /* HTUnEscape */
625:
626:
2.24 luotonen 627: /* HTCleanTelnetString()
628: * Make sure that the given string doesn't contain characters that
629: * could cause security holes, such as newlines in ftp, gopher,
630: * news or telnet URLs; more specifically: allows everything between
2.26 ! frystyk 631: * ASCII 20-7E, and also A0-FE, inclusive. Also TAB ('\t') allowed!
2.24 luotonen 632: *
633: * On entry,
634: * str the string that is *modified* if necessary. The
635: * string will be truncated at the first illegal
636: * character that is encountered.
637: * On exit,
638: * returns YES, if the string was modified.
639: * NO, otherwise.
640: */
641: PUBLIC BOOL HTCleanTelnetString ARGS1(char *, str)
642: {
643: char * cur = str;
644:
645: if (!str) return NO;
646:
647: while (*cur) {
648: int a = TOASCII(*cur);
2.26 ! frystyk 649: if (a != 0x9 && (a < 0x20 || (a > 0x7E && a < 0xA0) || a > 0xFE)) {
2.24 luotonen 650: CTRACE(stderr, "Illegal..... character in URL: \"%s\"\n",str);
651: *cur = 0;
652: CTRACE(stderr, "Truncated... \"%s\"\n",str);
653: return YES;
654: }
655: cur++;
656: }
657: return NO;
658: }
659:
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