2 * Copyright (c) 2006, Stockholms Universitet
3 * (Stockholm University, Stockholm Sweden)
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the university nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
49 do_read(int fd
, size_t sz
)
51 unsigned char res
[SHA_DIGEST_LENGTH
];
59 err(1, "malloc %u", (unsigned)sz
);
63 while ((ret
= read(fd
, buf
, sz
)) > 0)
64 SHA1_Update(&ctx
, buf
, ret
);
66 SHA1_Final(res
, &ctx
);
72 for (i
= 0; i
< SHA_DIGEST_LENGTH
; i
++)
73 printf("%02x", res
[i
]);
80 main (int argc
, char **argv
)
82 const size_t sz
= 16384;
83 int fd
= STDIN_FILENO
;
91 char *file
= argv
[arg
];
92 if ((fd
= open(file
, O_RDONLY
)) < 0)
93 err(1, "open %s", file
);
95 printf("%s: \t", file
);
96 (void)do_read(fd
, sz
);
101 ret
= do_read(fd
, sz
);