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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- #include <u.h>
- #include <libc.h>
- #include <bio.h>
- #include <libsec.h>
- #pragma varargck type "M" unsigned char*
- static int
- digestfmt(Fmt *fmt)
- {
- char buf[MD5dlen*2+1];
- uint8_t *p;
- int i;
- p = va_arg(fmt->args, uint8_t*);
- for(i=0; i<MD5dlen; i++)
- sprint(buf+2*i, "%.2ux", p[i]);
- return fmtstrcpy(fmt, buf);
- }
- static void
- sum(int fd, char *name)
- {
- int n;
- uint8_t buf[8192], digest[MD5dlen];
- DigestState *s;
- s = md5(nil, 0, nil, nil);
- while((n = read(fd, buf, sizeof buf)) > 0)
- md5(buf, n, nil, s);
- if(n < 0){
- fprint(2, "reading %s: %r\n", name ? name : "stdin");
- return;
- }
- md5(nil, 0, digest, s);
- if(name == nil)
- print("%M\n", digest);
- else
- print("%M\t%s\n", digest, name);
- }
- void
- main(int argc, char *argv[])
- {
- int i, fd;
- ARGBEGIN{
- default:
- fprint(2, "usage: md5sum [file...]\n");
- exits("usage");
- }ARGEND
- fmtinstall('M', digestfmt);
- if(argc == 0)
- sum(0, nil);
- else for(i = 0; i < argc; i++){
- fd = open(argv[i], OREAD);
- if(fd < 0){
- fprint(2, "md5sum: can't open %s: %r\n", argv[i]);
- continue;
- }
- sum(fd, argv[i]);
- close(fd);
- }
- exits(nil);
- }
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