sys/src/cmd/auth/x5092pub.c

   1 #include <u.h>
   2 #include <libc.h>
   3 #include <bio.h>
   4 #include <auth.h>
   5 #include <mp.h>
   6 #include <libsec.h>
   7
   8 int fd;
   9 int req = 0;
  10 char subject[1024];
  11
  12 void
  13 usage(void)
  14 {
  15         fprint(2, "usage: auth/x5092pub [-r] [file]\n");
  16         exits("usage");
  17 }
  18
  19 void
  20 main(int argc, char **argv)
  21 {
  22         int tot, n;
  23         uchar *buf;
  24         RSApub *pub;
  25
  26         quotefmtinstall();
  27         fmtinstall('B', mpfmt);
  28         fmtinstall('H', encodefmt);
  29
  30         ARGBEGIN{
  31         case 'r':
  32                 req = 1;
  33                 break;
  34         default:
  35                 usage();
  36         }ARGEND
  37
  38         fd = 0;
  39         if(argc == 1)
  40                 fd = open(argv[0], OREAD);
  41         else if(argc != 0)
  42                 usage();
  43         buf = nil;
  44         tot = 0;
  45         for(;;){
  46                 buf = realloc(buf, tot+8192);
  47                 if(buf == nil)
  48                         sysfatal("realloc: %r");
  49                 if((n = read(fd, buf+tot, 8192)) < 0)
  50                         sysfatal("read: %r");
  51                 if(n == 0)
  52                         break;
  53                 tot += n;
  54         }
  55         if(req)
  56                 pub = X509reqtoRSApub(buf, tot, subject, sizeof(subject));
  57         else
  58                 pub = X509toRSApub(buf, tot, subject, sizeof(subject));
  59         if(pub == nil)
  60                 sysfatal("X509toRSApub: %r");
  61         print("key proto=rsa size=%d ek=%B n=%B subject=%q \n", mpsignif(pub->n), pub->ek, pub->n, subject);
  62         exits(nil);
  63 }