1/* $NetBSD: stringprep.c,v 1.2 2017/01/28 21:31:50 christos Exp $ */ 2 3/* 4 * Copyright (c) 2004, 2006, 2008 Kungliga Tekniska H��gskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#ifdef HAVE_CONFIG_H 37#include <config.h> 38#endif 39#include "windlocl.h" 40#include <stdlib.h> 41#include <string.h> 42#include <errno.h> 43 44/** 45 * Process a input UCS4 string according a string-prep profile. 46 * 47 * @param in input UCS4 string to process 48 * @param in_len length of the input string 49 * @param out output UCS4 string 50 * @param out_len length of the output string. 51 * @param flags stringprep profile. 52 * 53 * @return returns 0 on success, an wind error code otherwise 54 * @ingroup wind 55 */ 56 57int 58wind_stringprep(const uint32_t *in, size_t in_len, 59 uint32_t *out, size_t *out_len, 60 wind_profile_flags flags) 61{ 62 size_t tmp_len = in_len * 3; 63 uint32_t *tmp; 64 int ret; 65 size_t olen; 66 67 if (in_len == 0) { 68 *out_len = 0; 69 return 0; 70 } 71 72 tmp = malloc(tmp_len * sizeof(uint32_t)); 73 if (tmp == NULL) 74 return ENOMEM; 75 76 ret = _wind_stringprep_map(in, in_len, tmp, &tmp_len, flags); 77 if (ret) { 78 free(tmp); 79 return ret; 80 } 81 82 olen = *out_len; 83 ret = _wind_stringprep_normalize(tmp, tmp_len, tmp, &olen); 84 if (ret) { 85 free(tmp); 86 return ret; 87 } 88 ret = _wind_stringprep_prohibited(tmp, olen, flags); 89 if (ret) { 90 free(tmp); 91 return ret; 92 } 93 ret = _wind_stringprep_testbidi(tmp, olen, flags); 94 if (ret) { 95 free(tmp); 96 return ret; 97 } 98 99 /* Insignificant Character Handling for ldap-prep */ 100 if (flags & WIND_PROFILE_LDAP_CASE_EXACT_ATTRIBUTE) { 101 ret = _wind_ldap_case_exact_attribute(tmp, olen, out, out_len); 102#if 0 103 } else if (flags & WIND_PROFILE_LDAP_CASE_EXACT_ASSERTION) { 104 } else if (flags & WIND_PROFILE_LDAP_NUMERIC) { 105 } else if (flags & WIND_PROFILE_LDAP_TELEPHONE) { 106#endif 107 } else { 108 memcpy(out, tmp, sizeof(out[0]) * olen); 109 *out_len = olen; 110 } 111 free(tmp); 112 113 return ret; 114} 115 116static const struct { 117 const char *name; 118 wind_profile_flags flags; 119} profiles[] = { 120 { "nameprep", WIND_PROFILE_NAME }, 121 { "saslprep", WIND_PROFILE_SASL }, 122 { "ldapprep", WIND_PROFILE_LDAP } 123}; 124 125/** 126 * Try to find the profile given a name. 127 * 128 * @param name name of the profile. 129 * @param flags the resulting profile. 130 * 131 * @return returns 0 on success, an wind error code otherwise 132 * @ingroup wind 133 */ 134 135int 136wind_profile(const char *name, wind_profile_flags *flags) 137{ 138 unsigned int i; 139 140 for (i = 0; i < sizeof(profiles)/sizeof(profiles[0]); i++) { 141 if (strcasecmp(profiles[i].name, name) == 0) { 142 *flags = profiles[i].flags; 143 return 0; 144 } 145 } 146 return WIND_ERR_NO_PROFILE; 147} 148