kadm5/srv/server_misc.c

/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 * Copyright 1993 OpenVision Technologies, Inc., All Rights Reserved
 *
 * $Header$
 */

/*
 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 *
 *  Openvision retains the copyright to derivative works of
 *  this source code.  Do *NOT* create a derivative of this
 *  source code before consulting with your legal department.
 *  Do *NOT* integrate *ANY* of this source code into another
 *  product before consulting with your legal department.
 *
 *  For further information, read the top-level Openvision
 *  copyright which is contained in the top-level MIT Kerberos
 *  copyright.
 *
 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 *
 */

#if !defined(lint) && !defined(__CODECENTER__)
static char *rcsid = "$Header$";
#endif

#include    "k5-int.h"
#include    <kdb.h>
#include    <ctype.h>
#include    <pwd.h>

/* for strcasecmp */
#include    <string.h>

#include    "server_internal.h"

kadm5_ret_t
adb_policy_init(kadm5_server_handle_t handle)
{
    /* now policy is initialized as part of database. No separate call needed */
    /* Solaris Kerberos: krb5_db_inited returns 0 when db has been inited */
    if( krb5_db_inited( handle->context ) == 0 )
    return KADM5_OK;

    return krb5_db_open( handle->context, NULL,
                         KRB5_KDB_OPEN_RW | KRB5_KDB_SRV_TYPE_ADMIN );
}

kadm5_ret_t
adb_policy_close(kadm5_server_handle_t handle)
{
    /* will be taken care by database close */
    return KADM5_OK;
}

#ifdef HESIOD
/* stolen from v4sever/kadm_funcs.c */
static char *
reverse(str)
    char    *str;
{
    static char newstr[80];
    char    *p, *q;
    int     i;

    i = strlen(str);
    if (i >= sizeof(newstr))
        i = sizeof(newstr)-1;
    p = str+i-1;
    q = newstr;
    q[i]='\0';
    for(; i > 0; i--)
        *q++ = *p--;

    return(newstr);
}
#endif /* HESIOD */

#if 0
static int
lower(str)
    char    *str;
{
    register char   *cp;
    int     effect=0;

    for (cp = str; *cp; cp++) {
        if (isupper(*cp)) {
            *cp = tolower(*cp);
            effect++;
        }
    }
    return(effect);
}
#endif

#ifdef HESIOD
static int
str_check_gecos(gecos, pwstr)
    char    *gecos;
    char    *pwstr;
{
    char            *cp, *ncp, *tcp;

    for (cp = gecos; *cp; ) {
        /* Skip past punctuation */
        for (; *cp; cp++)
            if (isalnum(*cp))
                break;
        /* Skip to the end of the word */
        for (ncp = cp; *ncp; ncp++)
            if (!isalnum(*ncp) && *ncp != '\'')
                break;
        /* Delimit end of word */
        if (*ncp)
            *ncp++ = '\0';
        /* Check word to see if it's the password */
        if (*cp) {
            if (!strcasecmp(pwstr, cp))
                return 1;
            tcp = reverse(cp);
            if (!strcasecmp(pwstr, tcp))
                return 1;
            cp = ncp;
        } else
            break;
    }
    return 0;
}
#endif /* HESIOD */

/* some of this is stolen from gatekeeper ... */
kadm5_ret_t
passwd_check(kadm5_server_handle_t handle,
             char *password, int use_policy, kadm5_policy_ent_t pol,
             krb5_principal principal)
{
    int     nupper = 0,
        nlower = 0,
        ndigit = 0,
        npunct = 0,
        nspec = 0;
    char    c, *s, *cp;
#ifdef HESIOD
    extern  struct passwd *hes_getpwnam();
    struct  passwd *ent;
#endif

    if(use_policy) {
        if(strlen(password) < pol->pw_min_length)
            return KADM5_PASS_Q_TOOSHORT;
        s = password;
        while ((c = *s++)) {
            if (islower((unsigned char) c)) {
                nlower = 1;
                continue;
            }
            else if (isupper((unsigned char) c)) {
                nupper = 1;
                continue;
            } else if (isdigit((unsigned char) c)) {
                ndigit = 1;
                continue;
            } else if (ispunct((unsigned char) c)) {
                npunct = 1;
                continue;
            } else {
                nspec = 1;
                continue;
            }
        }
        if ((nupper + nlower + ndigit + npunct + nspec) < pol->pw_min_classes)
            return KADM5_PASS_Q_CLASS;
        if((find_word(password) == KADM5_OK))
            return KADM5_PASS_Q_DICT;
        else {
            int i, n = krb5_princ_size(handle->context, principal);
            cp = krb5_princ_realm(handle->context, principal)->data;
            if (strcasecmp(cp, password) == 0)
                return KADM5_PASS_Q_DICT;
            for (i = 0; i < n ; i++) {
                cp = krb5_princ_component(handle->context, principal, i)->data;
                if (strcasecmp(cp, password) == 0)
                    return KADM5_PASS_Q_DICT;
#ifdef HESIOD
                ent = hes_getpwnam(cp);
                if (ent && ent->pw_gecos)
                    if (str_check_gecos(ent->pw_gecos, password))
                        return KADM5_PASS_Q_DICT; /* XXX new error code? */
#endif
            }
            return KADM5_OK;
        }
    } else {
        if (strlen(password) < 1)
            return KADM5_PASS_Q_TOOSHORT;
    }
    return KADM5_OK;
}

/* Solaris Kerberos */
void
trunc_name(size_t *len, char **dots)
{
    *dots = *len > MAXPRINCLEN ? "..." : "";
    *len = *len > MAXPRINCLEN ? MAXPRINCLEN : *len;
}