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cmd: rename *.C to *.c These were *.C back in 2003, before the 9 script, to avoid conflicts with the system utilities. A later change renamed them, but that change seems to have been lost during the hg->git conversion because I ran the conversion on a case-insensitive file system. Change-Id: Id32c99cb9571ef0e185c3cc9e8c8d6d5b48ca195
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1 #include <u.h>

2 #include <libc.h>

3 #include <bio.h>

4 #include <libsec.h>

6 static int

7 digestfmt(Fmt *fmt)

8 {

9 	char buf[MD5dlen*2+1];

10 	uchar *p;

11 	int i;

13 	p = va_arg(fmt->args, uchar*);

14 	for(i=0; i<MD5dlen; i++)

15 		sprint(buf+2*i, "%.2ux", p[i]);

16 	return fmtstrcpy(fmt, buf);

17 }

19 static void

20 sum(int fd, char *name)

21 {

22 	int n;

23 	uchar buf[8192], digest[MD5dlen];

24 	DigestState *s;

26 	s = md5(nil, 0, nil, nil);

27 	while((n = read(fd, buf, sizeof buf)) > 0)

28 		md5(buf, n, nil, s);

29 	md5(nil, 0, digest, s);

30 	if(name == nil)

31 		print("%M\n", digest);

32 	else

33 		print("%M\t%s\n", digest, name);

34 }

36 void

37 main(int argc, char *argv[])

38 {

39 	int i, fd;

41 	ARGBEGIN{

42 	default:

43 		fprint(2, "usage: md5sum [file...]\n");

44 		exits("usage");

45 	}ARGEND

47 	fmtinstall('M', digestfmt);

49 	if(argc == 0)

50 		sum(0, nil);

51 	else for(i = 0; i < argc; i++){

52 		fd = open(argv[i], OREAD);

53 		if(fd < 0){

54 			fprint(2, "md5sum: can't open %s: %r\n", argv[i]);

55 			continue;

56 		}

57 		sum(fd, argv[i]);

58 		close(fd);

59 	}

60 	exits(nil);

61 }