stringprep.c revision 256281
195887Sjmallett/* 295060Sjmallett * Copyright (c) 2004, 2006, 2008 Kungliga Tekniska H��gskolan 31590Srgrimes * (Royal Institute of Technology, Stockholm, Sweden). 495060Sjmallett * All rights reserved. 51590Srgrimes * 61590Srgrimes * Redistribution and use in source and binary forms, with or without 7264996Sjmmv * modification, are permitted provided that the following conditions 8264996Sjmmv * are met: 91590Srgrimes * 10241797Sandreast * 1. Redistributions of source code must retain the above copyright 11244927Santoine * notice, this list of conditions and the following disclaimer. 12228698Sdim * 131590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 14249657Sed * notice, this list of conditions and the following disclaimer in the 15249657Sed * documentation and/or other materials provided with the distribution. 16228063Sbapt * 17228063Sbapt * 3. Neither the name of the Institute nor the names of its contributors 18228063Sbapt * may be used to endorse or promote products derived from this software 19228063Sbapt * without specific prior written permission. 20228063Sbapt * 21228063Sbapt * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 2295060Sjmallett * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23228063Sbapt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24228063Sbapt * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25228063Sbapt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26228063Sbapt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27264996Sjmmv * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28264996Sjmmv * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29264996Sjmmv * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30264996Sjmmv * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 32 */ 33 34#ifdef HAVE_CONFIG_H 35#include <config.h> 36#endif 37#include "windlocl.h" 38#include <stdlib.h> 39#include <string.h> 40#include <errno.h> 41 42/** 43 * Process a input UCS4 string according a string-prep profile. 44 * 45 * @param in input UCS4 string to process 46 * @param in_len length of the input string 47 * @param out output UCS4 string 48 * @param out_len length of the output string. 49 * @param flags stringprep profile. 50 * 51 * @return returns 0 on success, an wind error code otherwise 52 * @ingroup wind 53 */ 54 55int 56wind_stringprep(const uint32_t *in, size_t in_len, 57 uint32_t *out, size_t *out_len, 58 wind_profile_flags flags) 59{ 60 size_t tmp_len = in_len * 3; 61 uint32_t *tmp; 62 int ret; 63 size_t olen; 64 65 if (in_len == 0) { 66 *out_len = 0; 67 return 0; 68 } 69 70 tmp = malloc(tmp_len * sizeof(uint32_t)); 71 if (tmp == NULL) 72 return ENOMEM; 73 74 ret = _wind_stringprep_map(in, in_len, tmp, &tmp_len, flags); 75 if (ret) { 76 free(tmp); 77 return ret; 78 } 79 80 olen = *out_len; 81 ret = _wind_stringprep_normalize(tmp, tmp_len, tmp, &olen); 82 if (ret) { 83 free(tmp); 84 return ret; 85 } 86 ret = _wind_stringprep_prohibited(tmp, olen, flags); 87 if (ret) { 88 free(tmp); 89 return ret; 90 } 91 ret = _wind_stringprep_testbidi(tmp, olen, flags); 92 if (ret) { 93 free(tmp); 94 return ret; 95 } 96 97 /* Insignificant Character Handling for ldap-prep */ 98 if (flags & WIND_PROFILE_LDAP_CASE_EXACT_ATTRIBUTE) { 99 ret = _wind_ldap_case_exact_attribute(tmp, olen, out, out_len); 100#if 0 101 } else if (flags & WIND_PROFILE_LDAP_CASE_EXACT_ASSERTION) { 102 } else if (flags & WIND_PROFILE_LDAP_NUMERIC) { 103 } else if (flags & WIND_PROFILE_LDAP_TELEPHONE) { 104#endif 105 } else { 106 memcpy(out, tmp, sizeof(out[0]) * olen); 107 *out_len = olen; 108 } 109 free(tmp); 110 111 return ret; 112} 113 114static const struct { 115 const char *name; 116 wind_profile_flags flags; 117} profiles[] = { 118 { "nameprep", WIND_PROFILE_NAME }, 119 { "saslprep", WIND_PROFILE_SASL }, 120 { "ldapprep", WIND_PROFILE_LDAP } 121}; 122 123/** 124 * Try to find the profile given a name. 125 * 126 * @param name name of the profile. 127 * @param flags the resulting profile. 128 * 129 * @return returns 0 on success, an wind error code otherwise 130 * @ingroup wind 131 */ 132 133int 134wind_profile(const char *name, wind_profile_flags *flags) 135{ 136 unsigned int i; 137 138 for (i = 0; i < sizeof(profiles)/sizeof(profiles[0]); i++) { 139 if (strcasecmp(profiles[i].name, name) == 0) { 140 *flags = profiles[i].flags; 141 return 0; 142 } 143 } 144 return WIND_ERR_NO_PROFILE; 145} 146