1*c42dbd0eSchristos /* SHA-1 thunks. 2*c42dbd0eSchristos Copyright (C) 2019-2022 Free Software Foundation, Inc. 3*c42dbd0eSchristos 4*c42dbd0eSchristos This file is part of libctf. 5*c42dbd0eSchristos 6*c42dbd0eSchristos libctf is free software; you can redistribute it and/or modify it under 7*c42dbd0eSchristos the terms of the GNU General Public License as published by the Free 8*c42dbd0eSchristos Software Foundation; either version 3, or (at your option) any later 9*c42dbd0eSchristos version. 10*c42dbd0eSchristos 11*c42dbd0eSchristos This program is distributed in the hope that it will be useful, but 12*c42dbd0eSchristos WITHOUT ANY WARRANTY; without even the implied warranty of 13*c42dbd0eSchristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 14*c42dbd0eSchristos See the GNU General Public License for more details. 15*c42dbd0eSchristos 16*c42dbd0eSchristos You should have received a copy of the GNU General Public License 17*c42dbd0eSchristos along with this program; see the file COPYING. If not see 18*c42dbd0eSchristos <http://www.gnu.org/licenses/>. */ 19*c42dbd0eSchristos 20*c42dbd0eSchristos #include <ctf-impl.h> 21*c42dbd0eSchristos #include <ctf-sha1.h> 22*c42dbd0eSchristos 23*c42dbd0eSchristos static const char hex[] = "0123456789abcdef"; 24*c42dbd0eSchristos 25*c42dbd0eSchristos char * ctf_sha1_fini(ctf_sha1_t * sha1,char * buf)26*c42dbd0eSchristosctf_sha1_fini (ctf_sha1_t *sha1, char *buf) 27*c42dbd0eSchristos { 28*c42dbd0eSchristos size_t i; 29*c42dbd0eSchristos 30*c42dbd0eSchristos /* Alignment suitable for a uint32_t. */ 31*c42dbd0eSchristos union 32*c42dbd0eSchristos { 33*c42dbd0eSchristos uint32_t align; 34*c42dbd0eSchristos unsigned char digest[((CTF_SHA1_SIZE - 1) / 2) + 1]; 35*c42dbd0eSchristos } align; 36*c42dbd0eSchristos 37*c42dbd0eSchristos sha1_finish_ctx (sha1, align.digest); 38*c42dbd0eSchristos 39*c42dbd0eSchristos if (!buf) 40*c42dbd0eSchristos return NULL; 41*c42dbd0eSchristos 42*c42dbd0eSchristos buf[CTF_SHA1_SIZE - 1] = '\0'; 43*c42dbd0eSchristos 44*c42dbd0eSchristos for (i = 0; i < (CTF_SHA1_SIZE - 1) / 2; i++) 45*c42dbd0eSchristos { 46*c42dbd0eSchristos buf[2 * i] = hex[align.digest[i] >> 4]; 47*c42dbd0eSchristos buf[2 * i + 1] = hex[align.digest[i] & 0xf]; 48*c42dbd0eSchristos } 49*c42dbd0eSchristos return buf; 50*c42dbd0eSchristos } 51