md5.c revision 78756 
1/*
2 * Derived from:
3 *
4 * MDDRIVER.C - test driver for MD2, MD4 and MD5
5 */
6
7/*
8 *  Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
9 *  rights reserved.
10 *
11 *  RSA Data Security, Inc. makes no representations concerning either
12 *  the merchantability of this software or the suitability of this
13 *  software for any particular purpose. It is provided "as is"
14 *  without express or implied warranty of any kind.
15 *
16 *  These notices must be retained in any copies of any part of this
17 *  documentation and/or software.
18 */
19
20#ifndef lint
21static const char rcsid[] =
22  "$FreeBSD: head/sbin/md5/md5.c 78756 2001-06-25 08:52:57Z ru $";
23#endif /* not lint */
24
25#include <sys/types.h>
26#include <err.h>
27#include <md5.h>
28#include <stdio.h>
29#include <time.h>
30#include <unistd.h>
31#include <stdlib.h>
32#include <string.h>
33
34/*
35 * Length of test block, number of test blocks.
36 */
37#define TEST_BLOCK_LEN 10000
38#define TEST_BLOCK_COUNT 100000
39
40int qflag;
41int rflag;
42
43static void MDString(const char *);
44static void MDTimeTrial(void);
45static void MDTestSuite(void);
46static void MDFilter(int);
47static void usage(void);
48
49/* Main driver.
50
51Arguments (may be any combination):
52  -sstring - digests string
53  -t       - runs time trial
54  -x       - runs test script
55  filename - digests file
56  (none)   - digests standard input
57 */
58int
59main(int argc, char *argv[])
60{
61	int     ch;
62	char   *p;
63	char	buf[33];
64
65	while ((ch = getopt(argc, argv, "pqrs:tx")) != -1)
66		switch (ch) {
67		case 'p':
68			MDFilter(1);
69			break;
70		case 'q':
71			qflag = 1;
72			break;
73		case 'r':
74			rflag = 1;
75			break;
76		case 's':
77			MDString(optarg);
78			break;
79		case 't':
80			MDTimeTrial();
81			break;
82		case 'x':
83			MDTestSuite();
84			break;
85		default:
86			usage();
87		}
88	argc -= optind;
89	argv += optind;
90
91	if (*argv) {
92		do {
93			p = MD5File(*argv, buf);
94			if (!p)
95				warn("%s", *argv);
96			else
97				if (qflag)
98					printf("%s\n", p);
99				else if (rflag)
100					printf("%s %s\n", p, *argv);
101				else
102					printf("MD5 (%s) = %s\n", *argv, p);
103		} while (*++argv);
104	} else if (optind == 1 || qflag || rflag)
105		MDFilter(0);
106
107	return (0);
108}
109/*
110 * Digests a string and prints the result.
111 */
112static void
113MDString(const char *string)
114{
115	size_t len = strlen(string);
116	char buf[33];
117
118	if (qflag)
119		printf("%s\n", MD5Data(string, len, buf));
120	else if (rflag)
121		printf("%s \"%s\"\n", MD5Data(string, len, buf), string);
122	else
123		printf("MD5 (\"%s\") = %s\n", string, MD5Data(string, len, buf));
124}
125/*
126 * Measures the time to digest TEST_BLOCK_COUNT TEST_BLOCK_LEN-byte blocks.
127 */
128static void
129MDTimeTrial(void)
130{
131	MD5_CTX context;
132	time_t  endTime, startTime;
133	unsigned char block[TEST_BLOCK_LEN];
134	unsigned int i;
135	char   *p, buf[33];
136
137	printf
138	    ("MD5 time trial. Digesting %d %d-byte blocks ...",
139	    TEST_BLOCK_COUNT, TEST_BLOCK_LEN);
140	fflush(stdout);
141
142	/* Initialize block */
143	for (i = 0; i < TEST_BLOCK_LEN; i++)
144		block[i] = (unsigned char) (i & 0xff);
145
146	/* Start timer */
147	time(&startTime);
148
149	/* Digest blocks */
150	MD5Init(&context);
151	for (i = 0; i < TEST_BLOCK_COUNT; i++)
152		MD5Update(&context, block, TEST_BLOCK_LEN);
153	p = MD5End(&context,buf);
154
155	/* Stop timer */
156	time(&endTime);
157
158	printf(" done\n");
159	printf("Digest = %s", p);
160	printf("\nTime = %ld seconds\n", (long) (endTime - startTime));
161	/* Be careful that endTime-startTime is not zero. (Bug fix from Ric
162	 * Anderson, ric@Artisoft.COM.) */
163	printf
164	    ("Speed = %ld bytes/second\n",
165	    (long) TEST_BLOCK_LEN * (long) TEST_BLOCK_COUNT / ((endTime - startTime) != 0 ? (endTime - startTime) : 1));
166}
167/*
168 * Digests a reference suite of strings and prints the results.
169 */
170static void
171MDTestSuite(void)
172{
173
174	printf("MD5 test suite:\n");
175
176	MDString("");
177	MDString("a");
178	MDString("abc");
179	MDString("message digest");
180	MDString("abcdefghijklmnopqrstuvwxyz");
181	MDString
182	    ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
183	MDString
184	    ("1234567890123456789012345678901234567890\
1851234567890123456789012345678901234567890");
186}
187
188/*
189 * Digests the standard input and prints the result.
190 */
191static void
192MDFilter(int tee)
193{
194	MD5_CTX context;
195	unsigned int len;
196	unsigned char buffer[BUFSIZ];
197	char buf[33];
198
199	MD5Init(&context);
200	while ((len = fread(buffer, 1, BUFSIZ, stdin))) {
201		if (tee && len != fwrite(buffer, 1, len, stdout))
202			err(1, "stdout");
203		MD5Update(&context, buffer, len);
204	}
205	printf("%s\n", MD5End(&context,buf));
206}
207
208static void
209usage(void)
210{
211
212	fprintf(stderr, "usage: md5 [-pqrtx] [-s string] [files ...]\n");
213	exit(1);
214}
215