bidi.c revision 226031
1226031Sstas/* 2226031Sstas * Copyright (c) 2004 Kungliga Tekniska H��gskolan 3226031Sstas * (Royal Institute of Technology, Stockholm, Sweden). 4226031Sstas * All rights reserved. 5226031Sstas * 6226031Sstas * Redistribution and use in source and binary forms, with or without 7226031Sstas * modification, are permitted provided that the following conditions 8226031Sstas * are met: 9226031Sstas * 10226031Sstas * 1. Redistributions of source code must retain the above copyright 11226031Sstas * notice, this list of conditions and the following disclaimer. 12226031Sstas * 13226031Sstas * 2. Redistributions in binary form must reproduce the above copyright 14226031Sstas * notice, this list of conditions and the following disclaimer in the 15226031Sstas * documentation and/or other materials provided with the distribution. 16226031Sstas * 17226031Sstas * 3. Neither the name of the Institute nor the names of its contributors 18226031Sstas * may be used to endorse or promote products derived from this software 19226031Sstas * without specific prior written permission. 20226031Sstas * 21226031Sstas * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22226031Sstas * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23226031Sstas * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24226031Sstas * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25226031Sstas * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26226031Sstas * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27226031Sstas * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28226031Sstas * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29226031Sstas * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30226031Sstas * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31226031Sstas * SUCH DAMAGE. 32226031Sstas */ 33226031Sstas 34226031Sstas#include "windlocl.h" 35226031Sstas 36226031Sstas#include <stdlib.h> 37226031Sstas 38226031Sstas#include "bidi_table.h" 39226031Sstas 40226031Sstasstatic int 41226031Sstasrange_entry_cmp(const void *a, const void *b) 42226031Sstas{ 43226031Sstas const struct range_entry *ea = (const struct range_entry*)a; 44226031Sstas const struct range_entry *eb = (const struct range_entry*)b; 45226031Sstas 46226031Sstas if (ea->start >= eb->start && ea->start < eb->start + eb->len) 47226031Sstas return 0; 48226031Sstas return ea->start - eb->start; 49226031Sstas} 50226031Sstas 51226031Sstasstatic int 52226031Sstasis_ral(uint32_t cp) 53226031Sstas{ 54226031Sstas struct range_entry ee = {cp}; 55226031Sstas void *s = bsearch(&ee, _wind_ral_table, _wind_ral_table_size, 56226031Sstas sizeof(_wind_ral_table[0]), 57226031Sstas range_entry_cmp); 58226031Sstas return s != NULL; 59226031Sstas} 60226031Sstas 61226031Sstasstatic int 62226031Sstasis_l(uint32_t cp) 63226031Sstas{ 64226031Sstas struct range_entry ee = {cp}; 65226031Sstas void *s = bsearch(&ee, _wind_l_table, _wind_l_table_size, 66226031Sstas sizeof(_wind_l_table[0]), 67226031Sstas range_entry_cmp); 68226031Sstas return s != NULL; 69226031Sstas} 70226031Sstas 71226031Sstasint 72226031Sstas_wind_stringprep_testbidi(const uint32_t *in, size_t in_len, wind_profile_flags flags) 73226031Sstas{ 74226031Sstas size_t i; 75226031Sstas unsigned ral = 0; 76226031Sstas unsigned l = 0; 77226031Sstas 78226031Sstas if ((flags & (WIND_PROFILE_NAME|WIND_PROFILE_SASL)) == 0) 79226031Sstas return 0; 80226031Sstas 81226031Sstas for (i = 0; i < in_len; ++i) { 82226031Sstas ral |= is_ral(in[i]); 83226031Sstas l |= is_l(in[i]); 84226031Sstas } 85226031Sstas if (ral) { 86226031Sstas if (l) 87226031Sstas return 1; 88226031Sstas if (!is_ral(in[0]) || !is_ral(in[in_len - 1])) 89226031Sstas return 1; 90226031Sstas } 91226031Sstas return 0; 92226031Sstas} 93