Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <mp.h>
#include <fcall.h>
#include <thread.h>
#include <9p.h>
#include <auth.h>
#include <authsrv.h>
#include <libsec.h>
#include "netssh.h"

Cipher *cryptos[1];
int debug;

void
usage(void)
{
        fprint(2, "usage: %s [file]\n", argv0);
        exits("usage");
}

void
main(int argc, char *argv[])
{
        Packet *p;
        char *ep, *np, *user;
        mpint *e, *n;
        int fd, m;
        char key[Maxrpcbuf], encpub[Maxrpcbuf];

        ARGBEGIN {
        default:
                usage();
        } ARGEND
        if (argc > 1)
                usage();

        user = getenv("user");
        if (argc == 0)
                fd = 0;
        else {
                fd = open(argv[0], OREAD);
                if (fd < 0)
                        usage();
        }
        m = read(fd, key, Maxrpcbuf - 1);
        close(fd);
        key[m >= 0? m: 0] = 0;

        ep = strstr(key, " ek=");
        np = strstr(key, " n=");
        if (ep == nil || np == nil)
                sysfatal("bad key file\n");
        e = strtomp(ep+4, nil, 16, nil);
        n = strtomp(np+3, nil, 16, nil);
        p = new_packet(nil);
        add_string(p, "ssh-rsa");
        add_mp(p, e);
        add_mp(p, n);
        if ((m = enc64(encpub, Maxrpcbuf, p->payload, p->rlength-1)) < 0)
                sysfatal("base-64 encoding failed\n");
        print("ssh-rsa ");
        write(1, encpub, m);
        if (user)
                print(" %s\n", user);
}