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Add a '-p' option to md5. This will save some time in generation of the

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ctm deltas.
This commit is contained in:
phk 1995-02-26 01:55:31 +00:00
parent b1cef83143
commit 8c6185fb31
2 changed files with 15 additions and 7 deletions
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5
sbin/md5/md5.1
View File

@ -3,7 +3,7 @@
md5 \- calculate a message-digest fingerprint (checksum) for a file
.SH SYNOPSIS
.B md5
[ -t | -x | -sstring | filename(s) ]
[ -p | -t | -x | -sstring | filename(s) ]
.SH DESCRIPTION
.B md5
takes as input a message of arbitrary length and produces
@ -26,6 +26,9 @@ must be the last objects on the command line.
.B -sstring
prints a checksum of the given "string".
.PP
.B -p
echos stdin to stdout and appends the MD5 sum to stdout.
.PP
.B -t
runs a built-in time trial.
.PP

17
sbin/md5/md5.c
View File

@ -1,5 +1,5 @@
/*
* $Id$
* $Id: md5.c,v 1.2 1995/02/20 00:48:50 phk Exp $
*
* Derived from:
*/
@ -36,7 +36,7 @@
static void MDString PROTO_LIST((char *));
static void MDTimeTrial PROTO_LIST((void));
static void MDTestSuite PROTO_LIST((void));
static void MDFilter PROTO_LIST((void));
static void MDFilter PROTO_LIST((int));
/* Main driver.
@ -61,6 +61,8 @@ main(argc, argv)
MDString(argv[i] + 2);
else if (strcmp(argv[i], "-t") == 0)
MDTimeTrial();
else if (strcmp(argv[i], "-p") == 0)
MDFilter(1);
else if (strcmp(argv[i], "-x") == 0)
MDTestSuite();
else {
@ -71,7 +73,7 @@ main(argc, argv)
printf("MD5 (%s) = %s\n", argv[i], p);
}
else
MDFilter();
MDFilter(0);
return (0);
}
@ -94,7 +96,7 @@ MDTimeTrial()
{
MD5_CTX context;
time_t endTime, startTime;
unsigned char block[TEST_BLOCK_LEN], digest[16];
unsigned char block[TEST_BLOCK_LEN];
unsigned int i;
char *p;
@ -151,14 +153,17 @@ MDTestSuite()
* Digests the standard input and prints the result.
*/
static void
MDFilter()
MDFilter(int pipe)
{
MD5_CTX context;
int len;
unsigned char buffer[BUFSIZ], digest[16];
MD5Init(&context);
while (len = fread(buffer, 1, BUFSIZ, stdin))
while (len = fread(buffer, 1, BUFSIZ, stdin)) {
if(pipe && (len != fwrite(buffer, 1, len, stdout)))
perror(stdout);
MD5Update(&context, buffer, len);
}
printf("%s\n", MD5End(&context));
}