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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 1993 OpenVision Technologies, Inc., All Rights Reserved
*
*/
#include <k5-int.h>
#include <kdb.h>
#include <kadm5/server_internal.h>
#include "misc.h"
#include "auth.h"
#include "net-server.h"
kadm5_ret_t
schpw_util_wrapper(void *server_handle,
krb5_principal client,
krb5_principal target,
krb5_boolean initial_flag,
char *new_pw, char **ret_pw,
char *msg_ret, unsigned int msg_len)
{
kadm5_ret_t ret;
kadm5_server_handle_t handle = server_handle;
/*
* If no target is explicitly provided, then the target principal
* is the client principal.
*/
if (target == NULL)
target = client;
/* If the client is changing its own password, require it to use an initial
* ticket, and enforce the policy min_life. */
if (krb5_principal_compare(handle->context, client, target)) {
if (!initial_flag) {
strlcpy(msg_ret, "Ticket must be derived from a password",
msg_len);
return KADM5_AUTH_INITIAL;
}
ret = check_min_life(server_handle, target, msg_ret, msg_len);
if (ret != 0)
return ret;
}
if (auth(handle->context, OP_CPW, client, target,
NULL, NULL, NULL, NULL, 0)) {
ret = kadm5_chpass_principal_util(server_handle,
target,
new_pw, ret_pw,
msg_ret, msg_len);
} else {
ret = KADM5_AUTH_CHANGEPW;
strlcpy(msg_ret, "Unauthorized request", msg_len);
}
return ret;
}
kadm5_ret_t
check_min_life(void *server_handle, krb5_principal principal,
char *msg_ret, unsigned int msg_len)
{
krb5_timestamp now;
kadm5_ret_t ret;
kadm5_policy_ent_rec pol;
kadm5_principal_ent_rec princ;
kadm5_server_handle_t handle = server_handle;
if (msg_ret != NULL)
*msg_ret = '\0';
ret = krb5_timeofday(handle->context, &now);
if (ret)
return ret;
ret = kadm5_get_principal(handle->lhandle, principal,
&princ, KADM5_PRINCIPAL_NORMAL_MASK);
if(ret)
return ret;
if(princ.aux_attributes & KADM5_POLICY) {
/* Look up the policy. If it doesn't exist, treat this principal as if
* it had no policy. */
if((ret=kadm5_get_policy(handle->lhandle,
princ.policy, &pol)) != KADM5_OK) {
(void) kadm5_free_principal_ent(handle->lhandle, &princ);
return (ret == KADM5_UNK_POLICY) ? 0 : ret;
}
if(ts_delta(now, princ.last_pwd_change) < pol.pw_min_life &&
!(princ.attributes & KRB5_KDB_REQUIRES_PWCHANGE)) {
if (msg_ret != NULL) {
time_t until;
char *time_string, *ptr;
const char *errstr;
until = princ.last_pwd_change + pol.pw_min_life;
time_string = ctime(&until);
if (time_string == NULL)
time_string = "(error)";
errstr = error_message(CHPASS_UTIL_PASSWORD_TOO_SOON);
if (strlen(errstr) + strlen(time_string) < msg_len) {
if (*(ptr = &time_string[strlen(time_string)-1]) == '\n')
*ptr = '\0';
snprintf(msg_ret, msg_len, errstr, time_string);
}
}
(void) kadm5_free_policy_ent(handle->lhandle, &pol);
(void) kadm5_free_principal_ent(handle->lhandle, &princ);
return KADM5_PASS_TOOSOON;
}
ret = kadm5_free_policy_ent(handle->lhandle, &pol);
if (ret) {
(void) kadm5_free_principal_ent(handle->lhandle, &princ);
return ret;
}
}
return kadm5_free_principal_ent(handle->lhandle, &princ);
}
#define MAXPRINCLEN 125
void
trunc_name(size_t *len, char **dots)
{
*dots = *len > MAXPRINCLEN ? "..." : "";
*len = *len > MAXPRINCLEN ? MAXPRINCLEN : *len;
}
krb5_error_code
make_toolong_error (void *handle, krb5_data **out)
{
krb5_error errpkt;
krb5_error_code retval;
krb5_data *scratch;
kadm5_server_handle_t server_handle = *(void **)handle;
retval = krb5_us_timeofday(server_handle->context, &errpkt.stime, &errpkt.susec);
if (retval)
return retval;
errpkt.error = KRB_ERR_FIELD_TOOLONG;
retval = krb5_build_principal(server_handle->context, &errpkt.server,
strlen(server_handle->params.realm),
server_handle->params.realm,
"kadmin", "changepw", NULL);
if (retval)
return retval;
errpkt.client = NULL;
errpkt.cusec = 0;
errpkt.ctime = 0;
errpkt.text.length = 0;
errpkt.text.data = 0;
errpkt.e_data.length = 0;
errpkt.e_data.data = 0;
scratch = malloc(sizeof(*scratch));
if (scratch == NULL)
return ENOMEM;
retval = krb5_mk_error(server_handle->context, &errpkt, scratch);
if (retval) {
free(scratch);
return retval;
}
*out = scratch;
return 0;
}
krb5_context get_context(void *handle)
{
kadm5_server_handle_t server_handle = *(void **)handle;
return server_handle->context;
}
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