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  • Committer: Bazaar Package Importer
  • Author(s): Daniel Baumann
  • Date: 2010-06-04 17:22:03 UTC
  • mfrom: (1.1.6 upstream)
  • Revision ID: james.westby@ubuntu.com-20100604172203-ei85j0da495sr8ut
Tags: 1:6-1
* Adding Kai as co-maintainer.
* Merging upstream version 6.

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sha1sum/sha1sum.c
 
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#include <u.h>
 
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#include <libc.h>
 
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#include <bio.h>
 
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#include <libsec.h>
 
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static int
 
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digestfmt(Fmt *fmt)
 
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{
 
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        char buf[SHA1dlen*2+1];
 
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        uchar *p;
 
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        int i;
 
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        p = va_arg(fmt->args, uchar*);
 
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        for(i=0; i<SHA1dlen; i++)
 
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                sprint(buf+2*i, "%.2ux", p[i]);
 
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        return fmtstrcpy(fmt, buf);
 
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}
 
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static void
 
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sum(int fd, char *name)
 
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{
 
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        int n;
 
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        uchar buf[8192], digest[SHA1dlen];
 
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        DigestState *s;
 
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        s = sha1(nil, 0, nil, nil);
 
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        while((n = read(fd, buf, sizeof buf)) > 0)
 
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                sha1(buf, n, nil, s);
 
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        sha1(nil, 0, digest, s);
 
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        if(name == nil)
 
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                print("%M\n", digest);
 
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        else
 
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                print("%M\t%s\n", digest, name);
 
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}
 
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void
 
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main(int argc, char *argv[])
 
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{
 
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        int i, fd;
 
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        ARGBEGIN{
 
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        default:
 
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                fprint(2, "usage: sha1sum [file...]\n");
 
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                exits("usage");
 
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        }ARGEND
 
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        fmtinstall('M', digestfmt);
 
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        if(argc == 0)
 
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                sum(0, nil);
 
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        else for(i = 0; i < argc; i++){
 
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                fd = open(argv[i], OREAD);
 
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                if(fd < 0){
 
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                        fprint(2, "sha1sum: can't open %s: %r\n", argv[i]);
 
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                        continue;
 
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                }
 
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                sum(fd, argv[i]);
 
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                close(fd);
 
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        }
 
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        exits(nil);
 
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}