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39 lines
897 B
C
39 lines
897 B
C
/* Author: Wietse Venema, Eindhoven University of Technology. */
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#include <string.h>
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#include <stdio.h>
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#include <pwd.h>
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#include <unistd.h>
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#include "skey.h"
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/* skey_crypt - return encrypted UNIX passwd if s/key or regular password ok */
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const char *skey_crypt(pp, salt, pwd, pwok)
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char *pp;
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char *salt;
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struct passwd *pwd;
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int pwok;
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{
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struct skey skey;
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char *p;
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/* Try s/key authentication even when the UNIX password is permitted. */
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if (pwd != 0 && skeyinfo(&skey, pwd->pw_name, (char *) 0) == 0
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&& skeyverify(&skey, pp) == 0) {
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/* s/key authentication succeeded */
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return (pwd->pw_passwd);
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}
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/* When s/key authentication does not work, always invoke crypt(). */
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p = crypt(pp, salt);
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if (pwok && pwd != 0 && strcmp(p, pwd->pw_passwd) == 0)
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return (pwd->pw_passwd);
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/* The user does not exist or entered bad input. */
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return (":");
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}
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