1*385cc6b4SJerry Jelinek /****************************************************************************** 2*385cc6b4SJerry Jelinek * 3*385cc6b4SJerry Jelinek * Module Name: utascii - Utility ascii functions 4*385cc6b4SJerry Jelinek * 5*385cc6b4SJerry Jelinek *****************************************************************************/ 6*385cc6b4SJerry Jelinek 7*385cc6b4SJerry Jelinek /* 8*385cc6b4SJerry Jelinek * Copyright (C) 2000 - 2016, Intel Corp. 9*385cc6b4SJerry Jelinek * All rights reserved. 10*385cc6b4SJerry Jelinek * 11*385cc6b4SJerry Jelinek * Redistribution and use in source and binary forms, with or without 12*385cc6b4SJerry Jelinek * modification, are permitted provided that the following conditions 13*385cc6b4SJerry Jelinek * are met: 14*385cc6b4SJerry Jelinek * 1. Redistributions of source code must retain the above copyright 15*385cc6b4SJerry Jelinek * notice, this list of conditions, and the following disclaimer, 16*385cc6b4SJerry Jelinek * without modification. 17*385cc6b4SJerry Jelinek * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18*385cc6b4SJerry Jelinek * substantially similar to the "NO WARRANTY" disclaimer below 19*385cc6b4SJerry Jelinek * ("Disclaimer") and any redistribution must be conditioned upon 20*385cc6b4SJerry Jelinek * including a substantially similar Disclaimer requirement for further 21*385cc6b4SJerry Jelinek * binary redistribution. 22*385cc6b4SJerry Jelinek * 3. Neither the names of the above-listed copyright holders nor the names 23*385cc6b4SJerry Jelinek * of any contributors may be used to endorse or promote products derived 24*385cc6b4SJerry Jelinek * from this software without specific prior written permission. 25*385cc6b4SJerry Jelinek * 26*385cc6b4SJerry Jelinek * Alternatively, this software may be distributed under the terms of the 27*385cc6b4SJerry Jelinek * GNU General Public License ("GPL") version 2 as published by the Free 28*385cc6b4SJerry Jelinek * Software Foundation. 29*385cc6b4SJerry Jelinek * 30*385cc6b4SJerry Jelinek * NO WARRANTY 31*385cc6b4SJerry Jelinek * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32*385cc6b4SJerry Jelinek * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33*385cc6b4SJerry Jelinek * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34*385cc6b4SJerry Jelinek * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35*385cc6b4SJerry Jelinek * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36*385cc6b4SJerry Jelinek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37*385cc6b4SJerry Jelinek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38*385cc6b4SJerry Jelinek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39*385cc6b4SJerry Jelinek * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40*385cc6b4SJerry Jelinek * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41*385cc6b4SJerry Jelinek * POSSIBILITY OF SUCH DAMAGES. 42*385cc6b4SJerry Jelinek */ 43*385cc6b4SJerry Jelinek 44*385cc6b4SJerry Jelinek #include "acpi.h" 45*385cc6b4SJerry Jelinek #include "accommon.h" 46*385cc6b4SJerry Jelinek 47*385cc6b4SJerry Jelinek 48*385cc6b4SJerry Jelinek /******************************************************************************* 49*385cc6b4SJerry Jelinek * 50*385cc6b4SJerry Jelinek * FUNCTION: AcpiUtValidNameseg 51*385cc6b4SJerry Jelinek * 52*385cc6b4SJerry Jelinek * PARAMETERS: Name - The name or table signature to be examined. 53*385cc6b4SJerry Jelinek * Four characters, does not have to be a 54*385cc6b4SJerry Jelinek * NULL terminated string. 55*385cc6b4SJerry Jelinek * 56*385cc6b4SJerry Jelinek * RETURN: TRUE if signature is has 4 valid ACPI characters 57*385cc6b4SJerry Jelinek * 58*385cc6b4SJerry Jelinek * DESCRIPTION: Validate an ACPI table signature. 59*385cc6b4SJerry Jelinek * 60*385cc6b4SJerry Jelinek ******************************************************************************/ 61*385cc6b4SJerry Jelinek 62*385cc6b4SJerry Jelinek BOOLEAN 63*385cc6b4SJerry Jelinek AcpiUtValidNameseg ( 64*385cc6b4SJerry Jelinek char *Name) 65*385cc6b4SJerry Jelinek { 66*385cc6b4SJerry Jelinek UINT32 i; 67*385cc6b4SJerry Jelinek 68*385cc6b4SJerry Jelinek 69*385cc6b4SJerry Jelinek /* Validate each character in the signature */ 70*385cc6b4SJerry Jelinek 71*385cc6b4SJerry Jelinek for (i = 0; i < ACPI_NAME_SIZE; i++) 72*385cc6b4SJerry Jelinek { 73*385cc6b4SJerry Jelinek if (!AcpiUtValidNameChar (Name[i], i)) 74*385cc6b4SJerry Jelinek { 75*385cc6b4SJerry Jelinek return (FALSE); 76*385cc6b4SJerry Jelinek } 77*385cc6b4SJerry Jelinek } 78*385cc6b4SJerry Jelinek 79*385cc6b4SJerry Jelinek return (TRUE); 80*385cc6b4SJerry Jelinek } 81*385cc6b4SJerry Jelinek 82*385cc6b4SJerry Jelinek 83*385cc6b4SJerry Jelinek /******************************************************************************* 84*385cc6b4SJerry Jelinek * 85*385cc6b4SJerry Jelinek * FUNCTION: AcpiUtValidNameChar 86*385cc6b4SJerry Jelinek * 87*385cc6b4SJerry Jelinek * PARAMETERS: Char - The character to be examined 88*385cc6b4SJerry Jelinek * Position - Byte position (0-3) 89*385cc6b4SJerry Jelinek * 90*385cc6b4SJerry Jelinek * RETURN: TRUE if the character is valid, FALSE otherwise 91*385cc6b4SJerry Jelinek * 92*385cc6b4SJerry Jelinek * DESCRIPTION: Check for a valid ACPI character. Must be one of: 93*385cc6b4SJerry Jelinek * 1) Upper case alpha 94*385cc6b4SJerry Jelinek * 2) numeric 95*385cc6b4SJerry Jelinek * 3) underscore 96*385cc6b4SJerry Jelinek * 97*385cc6b4SJerry Jelinek * We allow a '!' as the last character because of the ASF! table 98*385cc6b4SJerry Jelinek * 99*385cc6b4SJerry Jelinek ******************************************************************************/ 100*385cc6b4SJerry Jelinek 101*385cc6b4SJerry Jelinek BOOLEAN 102*385cc6b4SJerry Jelinek AcpiUtValidNameChar ( 103*385cc6b4SJerry Jelinek char Character, 104*385cc6b4SJerry Jelinek UINT32 Position) 105*385cc6b4SJerry Jelinek { 106*385cc6b4SJerry Jelinek 107*385cc6b4SJerry Jelinek if (!((Character >= 'A' && Character <= 'Z') || 108*385cc6b4SJerry Jelinek (Character >= '0' && Character <= '9') || 109*385cc6b4SJerry Jelinek (Character == '_'))) 110*385cc6b4SJerry Jelinek { 111*385cc6b4SJerry Jelinek /* Allow a '!' in the last position */ 112*385cc6b4SJerry Jelinek 113*385cc6b4SJerry Jelinek if (Character == '!' && Position == 3) 114*385cc6b4SJerry Jelinek { 115*385cc6b4SJerry Jelinek return (TRUE); 116*385cc6b4SJerry Jelinek } 117*385cc6b4SJerry Jelinek 118*385cc6b4SJerry Jelinek return (FALSE); 119*385cc6b4SJerry Jelinek } 120*385cc6b4SJerry Jelinek 121*385cc6b4SJerry Jelinek return (TRUE); 122*385cc6b4SJerry Jelinek } 123*385cc6b4SJerry Jelinek 124*385cc6b4SJerry Jelinek 125*385cc6b4SJerry Jelinek /******************************************************************************* 126*385cc6b4SJerry Jelinek * 127*385cc6b4SJerry Jelinek * FUNCTION: AcpiUtCheckAndRepairAscii 128*385cc6b4SJerry Jelinek * 129*385cc6b4SJerry Jelinek * PARAMETERS: Name - Ascii string 130*385cc6b4SJerry Jelinek * Count - Number of characters to check 131*385cc6b4SJerry Jelinek * 132*385cc6b4SJerry Jelinek * RETURN: None 133*385cc6b4SJerry Jelinek * 134*385cc6b4SJerry Jelinek * DESCRIPTION: Ensure that the requested number of characters are printable 135*385cc6b4SJerry Jelinek * Ascii characters. Sets non-printable and null chars to <space>. 136*385cc6b4SJerry Jelinek * 137*385cc6b4SJerry Jelinek ******************************************************************************/ 138*385cc6b4SJerry Jelinek 139*385cc6b4SJerry Jelinek void 140*385cc6b4SJerry Jelinek AcpiUtCheckAndRepairAscii ( 141*385cc6b4SJerry Jelinek UINT8 *Name, 142*385cc6b4SJerry Jelinek char *RepairedName, 143*385cc6b4SJerry Jelinek UINT32 Count) 144*385cc6b4SJerry Jelinek { 145*385cc6b4SJerry Jelinek UINT32 i; 146*385cc6b4SJerry Jelinek 147*385cc6b4SJerry Jelinek 148*385cc6b4SJerry Jelinek for (i = 0; i < Count; i++) 149*385cc6b4SJerry Jelinek { 150*385cc6b4SJerry Jelinek RepairedName[i] = (char) Name[i]; 151*385cc6b4SJerry Jelinek 152*385cc6b4SJerry Jelinek if (!Name[i]) 153*385cc6b4SJerry Jelinek { 154*385cc6b4SJerry Jelinek return; 155*385cc6b4SJerry Jelinek } 156*385cc6b4SJerry Jelinek if (!isprint (Name[i])) 157*385cc6b4SJerry Jelinek { 158*385cc6b4SJerry Jelinek RepairedName[i] = ' '; 159*385cc6b4SJerry Jelinek } 160*385cc6b4SJerry Jelinek } 161*385cc6b4SJerry Jelinek } 162