Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 459 insertions, 0 deletions

diff --git a/libraries/liblunicode/ucstr.c b/libraries/liblunicode/ucstr.c
new file mode 100644
index 0000000..b60e222
--- /dev/null
+++ b/libraries/liblunicode/ucstr.c
@@ -0,0 +1,459 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2021 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include <ac/bytes.h>
+#include <ac/ctype.h>
+#include <ac/string.h>
+#include <ac/stdlib.h>
+
+#include <lber_pvt.h>
+
+#include <ldap_utf8.h>
+#include <ldap_pvt_uc.h>
+
+#define	malloc(x)	ber_memalloc_x(x,ctx)
+#define	realloc(x,y)	ber_memrealloc_x(x,y,ctx)
+#define	free(x)		ber_memfree_x(x,ctx)
+
+int ucstrncmp(
+	const ldap_unicode_t *u1,
+	const ldap_unicode_t *u2,
+	ber_len_t n )
+{
+	for(; 0 < n; ++u1, ++u2, --n ) {
+		if( *u1 != *u2 ) {
+			return *u1 < *u2 ? -1 : +1;
+		}
+		if ( *u1 == 0 ) {
+			return 0;
+		}
+	}
+	return 0;
+}
+
+int ucstrncasecmp(
+	const ldap_unicode_t *u1,
+	const ldap_unicode_t *u2,
+	ber_len_t n )
+{
+	for(; 0 < n; ++u1, ++u2, --n ) {
+		ldap_unicode_t uu1 = uctolower( *u1 );
+		ldap_unicode_t uu2 = uctolower( *u2 );
+
+		if( uu1 != uu2 ) {
+			return uu1 < uu2 ? -1 : +1;
+		}
+		if ( uu1 == 0 ) {
+			return 0;
+		}
+	}
+	return 0;
+}
+
+ldap_unicode_t * ucstrnchr(
+	const ldap_unicode_t *u,
+	ber_len_t n,
+	ldap_unicode_t c )
+{
+	for(; 0 < n; ++u, --n ) {
+		if( *u == c ) {
+			return (ldap_unicode_t *) u;
+		}
+	}
+
+	return NULL;
+}
+
+ldap_unicode_t * ucstrncasechr(
+	const ldap_unicode_t *u,
+	ber_len_t n,
+	ldap_unicode_t c )
+{
+	c = uctolower( c );
+	for(; 0 < n; ++u, --n ) {
+		if( uctolower( *u ) == c ) {
+			return (ldap_unicode_t *) u;
+		}
+	}
+
+	return NULL;
+}
+
+void ucstr2upper(
+	ldap_unicode_t *u,
+	ber_len_t n )
+{
+	for(; 0 < n; ++u, --n ) {
+		*u = uctoupper( *u );
+	}
+}
+
+struct berval * UTF8bvnormalize(
+	struct berval *bv,
+	struct berval *newbv,
+	unsigned flags,
+	void *ctx )
+{
+	int i, j, len, clen, outpos, ucsoutlen, outsize, last;
+	int didnewbv = 0;
+	char *out, *outtmp, *s;
+	ac_uint4 *ucs, *p, *ucsout;
+
+	static unsigned char mask[] = {
+		0, 0x7f, 0x1f, 0x0f, 0x07, 0x03, 0x01 };
+
+	unsigned casefold = flags & LDAP_UTF8_CASEFOLD;
+	unsigned approx = flags & LDAP_UTF8_APPROX;
+
+	if ( bv == NULL ) {
+		return NULL;
+	}
+
+	s = bv->bv_val;
+	len = bv->bv_len;
+
+	if ( len == 0 ) {
+		return ber_dupbv_x( newbv, bv, ctx );
+	}
+
+	if ( !newbv ) {
+		newbv = ber_memalloc_x( sizeof(struct berval), ctx );
+		if ( !newbv ) return NULL;
+		didnewbv = 1;
+	}
+
+	/* Should first check to see if string is already in proper
+	 * normalized form. This is almost as time consuming as
+	 * the normalization though.
+	 */
+
+	/* finish off everything up to character before first non-ascii */
+	if ( LDAP_UTF8_ISASCII( s ) ) {
+		if ( casefold ) {
+			outsize = len + 7;
+			out = (char *) ber_memalloc_x( outsize, ctx );
+			if ( out == NULL ) {
+fail:
+				if ( didnewbv )
+					ber_memfree_x( newbv, ctx );
+				return NULL;
+			}
+			outpos = 0;
+
+			for ( i = 1; (i < len) && LDAP_UTF8_ISASCII(s + i); i++ ) {
+				out[outpos++] = TOLOWER( s[i-1] );
+			}
+			if ( i == len ) {
+				out[outpos++] = TOLOWER( s[len-1] );
+				out[outpos] = '\0';
+				newbv->bv_val = out;
+				newbv->bv_len = outpos;
+				return newbv;
+			}
+		} else {
+			for ( i = 1; (i < len) && LDAP_UTF8_ISASCII(s + i); i++ ) {
+				/* empty */
+			}
+
+			if ( i == len ) {
+				return ber_str2bv_x( s, len, 1, newbv, ctx );
+			}
+				
+			outsize = len + 7;
+			out = (char *) ber_memalloc_x( outsize, ctx );
+			if ( out == NULL ) {
+				goto fail;
+			}
+			outpos = i - 1;
+			memcpy(out, s, outpos);
+		}
+	} else {
+		outsize = len + 7;
+		out = (char *) ber_memalloc_x( outsize, ctx );
+		if ( out == NULL ) {
+			goto fail;
+		}
+		outpos = 0;
+		i = 0;
+	}
+
+	p = ucs = ber_memalloc_x( len * sizeof(*ucs), ctx );
+	if ( ucs == NULL ) {
+		ber_memfree_x(out, ctx);
+		goto fail;
+	}
+
+	/* convert character before first non-ascii to ucs-4 */
+	if ( i > 0 ) {
+		*p = casefold ? TOLOWER( s[i-1] ) : s[i-1];
+		p++;
+	}
+
+	/* s[i] is now first non-ascii character */
+	for (;;) {
+		/* s[i] is non-ascii */
+		/* convert everything up to next ascii to ucs-4 */
+		while ( i < len ) {
+			clen = LDAP_UTF8_CHARLEN2( s + i, clen );
+			if ( clen == 0 ) {
+				ber_memfree_x( ucs, ctx );
+				ber_memfree_x( out, ctx );
+				goto fail;
+			}
+			if ( clen == 1 ) {
+				/* ascii */
+				break;
+			}
+			*p = s[i] & mask[clen];
+			i++;
+			for( j = 1; j < clen; j++ ) {
+				if ( (s[i] & 0xc0) != 0x80 ) {
+					ber_memfree_x( ucs, ctx );
+					ber_memfree_x( out, ctx );
+					goto fail;
+				}
+				*p <<= 6;
+				*p |= s[i] & 0x3f;
+				i++;
+			}
+			if ( casefold ) {
+				*p = uctolower( *p );
+			}
+			p++;
+		}
+		/* normalize ucs of length p - ucs */
+		uccompatdecomp( ucs, p - ucs, &ucsout, &ucsoutlen, ctx );
+		if ( approx ) {
+			for ( j = 0; j < ucsoutlen; j++ ) {
+				if ( ucsout[j] < 0x80 ) {
+					out[outpos++] = ucsout[j];
+				}
+			}
+		} else {
+			ucsoutlen = uccanoncomp( ucsout, ucsoutlen );
+			/* convert ucs to utf-8 and store in out */
+			for ( j = 0; j < ucsoutlen; j++ ) {
+				/* allocate more space if not enough room for
+				   6 bytes and terminator */
+				if ( outsize - outpos < 7 ) {
+					outsize = ucsoutlen - j + outpos + 6;
+					outtmp = (char *) ber_memrealloc_x( out, outsize, ctx );
+					if ( outtmp == NULL ) {
+						ber_memfree_x( ucsout, ctx );
+						ber_memfree_x( ucs, ctx );
+						ber_memfree_x( out, ctx );
+						goto fail;
+					}
+					out = outtmp;
+				}
+				outpos += ldap_x_ucs4_to_utf8( ucsout[j], &out[outpos] );
+			}
+		}
+
+		ber_memfree_x( ucsout, ctx );
+		ucsout = NULL;
+		
+		if ( i == len ) {
+			break;
+		}
+
+		last = i;
+
+		/* Allocate more space in out if necessary */
+		if (len - i >= outsize - outpos) {
+			outsize += 1 + ((len - i) - (outsize - outpos));
+			outtmp = (char *) ber_memrealloc_x(out, outsize, ctx);
+			if (outtmp == NULL) {
+				ber_memfree_x( ucs, ctx );
+				ber_memfree_x( out, ctx );
+				goto fail;
+			}
+			out = outtmp;
+		}
+
+		/* s[i] is ascii */
+		/* finish off everything up to char before next non-ascii */
+		for ( i++; (i < len) && LDAP_UTF8_ISASCII(s + i); i++ ) {
+			out[outpos++] = casefold ? TOLOWER( s[i-1] ) : s[i-1];
+		}
+		if ( i == len ) {
+			out[outpos++] = casefold ? TOLOWER( s[len-1] ) : s[len-1];
+			break;
+		}
+
+		/* convert character before next non-ascii to ucs-4 */
+		*ucs = casefold ? TOLOWER( s[i-1] ) : s[i-1];
+		p = ucs + 1;
+	}
+
+	ber_memfree_x( ucs, ctx );
+	out[outpos] = '\0';
+	newbv->bv_val = out;
+	newbv->bv_len = outpos;
+	return newbv;
+}
+
+/* compare UTF8-strings, optionally ignore casing */
+/* slow, should be optimized */
+int UTF8bvnormcmp(
+	struct berval *bv1,
+	struct berval *bv2,
+	unsigned flags,
+	void *ctx )
+{
+	int i, l1, l2, len, ulen, res = 0;
+	char *s1, *s2, *done;
+	ac_uint4 *ucs, *ucsout1, *ucsout2;
+
+	unsigned casefold = flags & LDAP_UTF8_CASEFOLD;
+	unsigned norm1 = flags & LDAP_UTF8_ARG1NFC;
+	unsigned norm2 = flags & LDAP_UTF8_ARG2NFC;
+
+	if (bv1 == NULL) {
+		return bv2 == NULL ? 0 : -1;
+
+	} else if (bv2 == NULL) {
+		return 1;
+	}
+
+	l1 = bv1->bv_len;
+	l2 = bv2->bv_len;
+
+	len = (l1 < l2) ? l1 : l2;
+	if (len == 0) {
+		return l1 == 0 ? (l2 == 0 ? 0 : -1) : 1;
+	}
+
+	s1 = bv1->bv_val;
+	s2 = bv2->bv_val;
+	done = s1 + len;
+
+	while ( (s1 < done) && LDAP_UTF8_ISASCII(s1) && LDAP_UTF8_ISASCII(s2) ) {
+		if (casefold) {
+			char c1 = TOLOWER(*s1);
+			char c2 = TOLOWER(*s2);
+			res = c1 - c2;
+		} else {
+			res = *s1 - *s2;
+		}			
+		s1++;
+		s2++;
+		if (res) {
+			/* done unless next character in s1 or s2 is non-ascii */
+			if (s1 < done) {
+				if (!LDAP_UTF8_ISASCII(s1) || !LDAP_UTF8_ISASCII(s2)) {
+					break;
+				}
+			} else if (((len < l1) && !LDAP_UTF8_ISASCII(s1)) ||
+				((len < l2) && !LDAP_UTF8_ISASCII(s2)))
+			{
+				break;
+			}
+			return res;
+		}
+	}
+
+	/* We have encountered non-ascii or strings equal up to len */
+
+	/* set i to number of iterations */
+	i = s1 - done + len;
+	/* passed through loop at least once? */
+	if (i > 0) {
+		if (!res && (s1 == done) &&
+		    ((len == l1) || LDAP_UTF8_ISASCII(s1)) &&
+		    ((len == l2) || LDAP_UTF8_ISASCII(s2))) {
+			/* all ascii and equal up to len */
+			return l1 - l2;
+		}
+
+		/* rewind one char, and do normalized compare from there */
+		s1--;
+		s2--;
+		l1 -= i - 1;
+		l2 -= i - 1;
+	}
+			
+	/* Should first check to see if strings are already in
+	 * proper normalized form.
+	 */
+	ucs = malloc( ( ( norm1 || l1 > l2 ) ? l1 : l2 ) * sizeof(*ucs) );
+	if ( ucs == NULL ) {
+		return l1 > l2 ? 1 : -1; /* what to do??? */
+	}
+	
+	/*
+	 * XXYYZ: we convert to ucs4 even though -llunicode
+	 * expects ucs2 in an ac_uint4
+	 */
+	
+	/* convert and normalize 1st string */
+	for ( i = 0, ulen = 0; i < l1; i += len, ulen++ ) {
+		ucs[ulen] = ldap_x_utf8_to_ucs4( s1 + i );
+		if ( ucs[ulen] == LDAP_UCS4_INVALID ) {
+			free( ucs );
+			return -1; /* what to do??? */
+		}
+		len = LDAP_UTF8_CHARLEN( s1 + i );
+	}
+
+	if ( norm1 ) {
+		ucsout1 = ucs;
+		l1 = ulen;
+		ucs = malloc( l2 * sizeof(*ucs) );
+		if ( ucs == NULL ) {
+			free( ucsout1 );
+			return l1 > l2 ? 1 : -1; /* what to do??? */
+		}
+	} else {
+		uccompatdecomp( ucs, ulen, &ucsout1, &l1, ctx );
+		l1 = uccanoncomp( ucsout1, l1 );
+	}
+
+	/* convert and normalize 2nd string */
+	for ( i = 0, ulen = 0; i < l2; i += len, ulen++ ) {
+		ucs[ulen] = ldap_x_utf8_to_ucs4( s2 + i );
+		if ( ucs[ulen] == LDAP_UCS4_INVALID ) {
+			free( ucsout1 );
+			free( ucs );
+			return 1; /* what to do??? */
+		}
+		len = LDAP_UTF8_CHARLEN( s2 + i );
+	}
+
+	if ( norm2 ) {
+		ucsout2 = ucs;
+		l2 = ulen;
+	} else {
+		uccompatdecomp( ucs, ulen, &ucsout2, &l2, ctx );
+		l2 = uccanoncomp( ucsout2, l2 );
+		free( ucs );
+	}
+	
+	res = casefold
+		? ucstrncasecmp( ucsout1, ucsout2, l1 < l2 ? l1 : l2 )
+		: ucstrncmp( ucsout1, ucsout2, l1 < l2 ? l1 : l2 );
+	free( ucsout1 );
+	free( ucsout2 );
+
+	if ( res != 0 ) {
+		return res;
+	}
+	if ( l1 == l2 ) {
+		return 0;
+	}
+	return l1 > l2 ? 1 : -1;
+}