101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* Copyright © 2007 Carl Worth
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* Copyright © 2009 Jeremy Huddleston, Julien Cristau, and Matthieu Herrb
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* Copyright © 2009-2010 Mikhail Gusarov
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* Copyright © 2012 Yaakov Selkowitz and Keith Packard
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "sha1/sha1.h"
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#include "mesa-sha1.h"
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#include <string.h>
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void
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_mesa_sha1_compute(const void *data, size_t size, unsigned char result[20])
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{
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struct mesa_sha1 ctx;
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_mesa_sha1_init(&ctx);
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_mesa_sha1_update(&ctx, data, size);
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_mesa_sha1_final(&ctx, result);
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}
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void
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_mesa_sha1_format(char *buf, const unsigned char *sha1)
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{
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static const char hex_digits[] = "0123456789abcdef";
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int i;
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for (i = 0; i < 40; i += 2) {
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buf[i] = hex_digits[sha1[i >> 1] >> 4];
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buf[i + 1] = hex_digits[sha1[i >> 1] & 0x0f];
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}
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buf[i] = '\0';
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}
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/* Convert a hashs string hexidecimal representation into its more compact
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* form.
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*/
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void
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_mesa_sha1_hex_to_sha1(unsigned char *buf, const char *hex)
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{
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for (unsigned i = 0; i < 20; i++) {
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char tmp[3];
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tmp[0] = hex[i * 2];
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tmp[1] = hex[(i * 2) + 1];
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tmp[2] = '\0';
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buf[i] = strtol(tmp, NULL, 16);
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}
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}
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static void
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sha1_to_uint32(const uint8_t sha1[SHA1_DIGEST_LENGTH],
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uint32_t out[SHA1_DIGEST_LENGTH32])
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{
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memset(out, 0, SHA1_DIGEST_LENGTH);
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for (unsigned i = 0; i < SHA1_DIGEST_LENGTH; i++)
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out[i / 4] |= (uint32_t)sha1[i] << ((i % 4) * 8);
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}
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void
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_mesa_sha1_print(FILE *f, const uint8_t sha1[SHA1_DIGEST_LENGTH])
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{
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uint32_t u32[SHA1_DIGEST_LENGTH];
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sha1_to_uint32(sha1, u32);
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for (unsigned i = 0; i < SHA1_DIGEST_LENGTH32; i++) {
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fprintf(f, "0x%08x", u32[i]);
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if (i < SHA1_DIGEST_LENGTH32 - 1)
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fprintf(f, ", ");
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}
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}
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bool
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_mesa_printed_sha1_equal(const uint8_t sha1[SHA1_DIGEST_LENGTH],
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const uint32_t printed_sha1[SHA1_DIGEST_LENGTH32])
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{
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uint32_t u32[SHA1_DIGEST_LENGTH32];
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sha1_to_uint32(sha1, u32);
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return memcmp(u32, printed_sha1, sizeof(u32)) == 0;
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}
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