diff options
Diffstat (limited to 'qemu/roms/ipxe/src/core/base16.c')
-rw-r--r-- | qemu/roms/ipxe/src/core/base16.c | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/qemu/roms/ipxe/src/core/base16.c b/qemu/roms/ipxe/src/core/base16.c deleted file mode 100644 index f9e0f3364..000000000 --- a/qemu/roms/ipxe/src/core/base16.c +++ /dev/null @@ -1,107 +0,0 @@ -/* - * Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <stdint.h> -#include <stdio.h> -#include <errno.h> -#include <assert.h> -#include <ipxe/string.h> -#include <ipxe/vsprintf.h> -#include <ipxe/base16.h> - -/** @file - * - * Base16 encoding - * - */ - -/** - * Encode hexadecimal string (with optional byte separator character) - * - * @v separator Byte separator character, or 0 for no separator - * @v raw Raw data - * @v raw_len Length of raw data - * @v data Buffer - * @v len Length of buffer - * @ret len Encoded length - */ -size_t hex_encode ( char separator, const void *raw, size_t raw_len, - char *data, size_t len ) { - const uint8_t *bytes = raw; - const char delimiter[2] = { separator, '\0' }; - size_t used = 0; - unsigned int i; - - if ( len ) - data[0] = 0; /* Ensure that a terminating NUL exists */ - for ( i = 0 ; i < raw_len ; i++ ) { - used += ssnprintf ( ( data + used ), ( len - used ), - "%s%02x", ( used ? delimiter : "" ), - bytes[i] ); - } - return used; -} - -/** - * Decode hexadecimal string (with optional byte separator character) - * - * @v separator Byte separator character, or 0 for no separator - * @v encoded Encoded string - * @v data Buffer - * @v len Length of buffer - * @ret len Length of data, or negative error - */ -int hex_decode ( char separator, const char *encoded, void *data, size_t len ) { - uint8_t *out = data; - unsigned int count = 0; - unsigned int sixteens; - unsigned int units; - - while ( *encoded ) { - - /* Check separator, if applicable */ - if ( count && separator && ( ( *(encoded++) != separator ) ) ) - return -EINVAL; - - /* Extract digits. Note that either digit may be NUL, - * which would be interpreted as an invalid value by - * digit_value(); there is therefore no need for an - * explicit end-of-string check. - */ - sixteens = digit_value ( *(encoded++) ); - if ( sixteens >= 16 ) - return -EINVAL; - units = digit_value ( *(encoded++) ); - if ( units >= 16 ) - return -EINVAL; - - /* Store result */ - if ( count < len ) - out[count] = ( ( sixteens << 4 ) | units ); - count++; - - } - return count; -} |