mirror of https://gitee.com/openkylin/swig.git
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/*
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Copyright (C) Andrew Tridgell 2002
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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simple front-end functions to mdfour code
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*/
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#include "ccache.h"
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static struct mdfour md;
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void hash_buffer(const char *s, int len)
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{
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mdfour_update(&md, (unsigned char *)s, len);
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}
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void hash_start(void)
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{
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mdfour_begin(&md);
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}
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void hash_string(const char *s)
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{
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hash_buffer(s, strlen(s));
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}
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void hash_int(int x)
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{
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hash_buffer((char *)&x, sizeof(x));
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}
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/* add contents of a file to the hash */
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void hash_file(const char *fname)
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{
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char buf[1024];
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int fd, n;
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fd = open(fname, O_RDONLY|O_BINARY);
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if (fd == -1) {
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cc_log("Failed to open %s\n", fname);
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fatal("hash_file");
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}
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while ((n = read(fd, buf, sizeof(buf))) > 0) {
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hash_buffer(buf, n);
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}
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close(fd);
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}
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/* return the hash result as a static string */
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char *hash_result(void)
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{
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unsigned char sum[16];
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static char ret[53];
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int i;
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hash_buffer(NULL, 0);
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mdfour_result(&md, sum);
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for (i=0;i<16;i++) {
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sprintf(&ret[i*2], "%02x", (unsigned)sum[i]);
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}
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sprintf(&ret[i*2], "-%u", (unsigned)md.totalN);
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return ret;
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}
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