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/* $OpenBSD: attributes.c,v 1.1 2010/05/31 17:36:31 martinh Exp $ */
/*
* Copyright (c) 2009 Martin Hedenfalk <martin@bzero.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/queue.h>
#include <sys/types.h>
#include <assert.h>
#include <string.h>
#include <time.h>
#include "ldapd.h"
struct ber_element *
ldap_get_attribute(struct ber_element *entry, const char *attr)
{
char *s;
struct ber_element *elm, *a;
assert(entry);
assert(attr);
if (entry->be_encoding != BER_TYPE_SEQUENCE)
return NULL;
for (elm = entry->be_sub; elm != NULL; elm = elm->be_next) {
a = elm->be_sub;
if (a && ber_get_string(a, &s) == 0 && strcasecmp(s, attr) == 0)
return a;
}
return NULL;
}
struct ber_element *
ldap_find_attribute(struct ber_element *entry, struct attr_type *at)
{
struct ber_element *elm = NULL;
struct name *an;
SLIST_FOREACH(an, at->names, next) {
if ((elm = ldap_get_attribute(entry, an->name)) != NULL)
return elm;
}
if (an == NULL)
elm = ldap_get_attribute(entry, at->oid);
return elm;
}
struct ber_element *
ldap_find_value(struct ber_element *elm, const char *value)
{
char *s;
struct ber_element *a;
if (elm == NULL)
return NULL;
for (a = elm->be_sub; a != NULL; a = a->be_next) {
if (ber_get_string(a, &s) == 0 && strcasecmp(s, value) == 0)
return a;
}
return NULL;
}
struct ber_element *
ldap_add_attribute(struct ber_element *entry, const char *attr,
struct ber_element *value_set)
{
struct ber_element *elm, *a, *last;
assert(entry);
assert(attr);
assert(value_set);
if (entry->be_encoding != BER_TYPE_SEQUENCE) {
log_warnx("entries should be a sequence");
return NULL;
}
if (value_set->be_type != BER_TYPE_SET) {
log_warnx("values should be a set");
return NULL;
}
last = entry->be_sub;
while (last && last->be_next != NULL)
last = last->be_next;
if ((elm = ber_add_sequence(last)) == NULL)
return NULL;
if ((a = ber_add_string(elm, attr)) == NULL) {
ber_free_elements(elm);
return NULL;
}
ber_link_elements(a, value_set);
return elm;
}
int
ldap_set_values(struct ber_element *elm, struct ber_element *vals)
{
char *attr;
struct ber_element *old_vals;
assert(elm);
assert(vals);
assert(vals->be_sub);
if (ber_scanf_elements(elm, "se(", &attr, &old_vals) != 0) {
log_warnx("failed to parse element");
return -1;
}
ber_free_elements(old_vals->be_sub);
old_vals->be_sub = NULL;
ber_link_elements(old_vals, vals->be_sub);
return 0;
}
int
ldap_merge_values(struct ber_element *elm, struct ber_element *vals)
{
char *attr;
struct ber_element *old_vals, *last;
assert(elm);
assert(vals);
assert(vals->be_type == BER_TYPE_SET);
assert(vals->be_sub);
if (ber_scanf_elements(elm, "se(", &attr, &old_vals) != 0) {
log_warnx("failed to parse element");
return -1;
}
last = old_vals->be_sub;
while (last && last->be_next)
last = last->be_next;
ber_link_elements(last, vals->be_sub);
return 0;
}
int
ldap_del_attribute(struct ber_element *entry, const char *attrdesc)
{
struct ber_element *attr, *prev = NULL;
char *s;
assert(entry);
assert(attrdesc);
attr = entry->be_sub;
while (attr) {
if (ber_scanf_elements(attr, "{s(", &s) != 0) {
log_warnx("failed to parse attribute");
return -1;
}
if (strcasecmp(s, attrdesc) == 0) {
if (prev == NULL)
entry->be_sub = attr->be_next;
else
prev->be_next = attr->be_next;
attr->be_next = NULL;
ber_free_elements(attr);
break;
}
prev = attr;
attr = attr->be_next;
}
return 0;
}
int
ldap_del_values(struct ber_element *elm, struct ber_element *vals)
{
char *attr;
struct ber_element *old_vals, *v, *x, *vk, *xk, *prev;
struct ber_element *removed;
assert(elm);
assert(vals);
assert(vals->be_sub);
if (ber_scanf_elements(elm, "se(", &attr, &old_vals) != 0) {
log_warnx("failed to parse element");
return -1;
}
prev = old_vals;
for (v = old_vals->be_sub; v; v = v->be_next) {
vk = v->be_sub;
for (x = vals->be_sub; x; x = x->be_next) {
xk = x->be_sub;
if (xk && vk->be_len == xk->be_len &&
memcmp(vk->be_val, xk->be_val, xk->be_len) == 0) {
removed = ber_unlink_elements(prev);
ber_link_elements(prev, removed->be_next);
ber_free_elements(removed);
break;
}
}
prev = v;
}
return 0;
}
char *
ldap_strftime(time_t tm)
{
static char tmbuf[16];
struct tm *gmt = gmtime(&tm);
strftime(tmbuf, sizeof(tmbuf), "%Y%m%d%H%M%SZ", gmt);
return tmbuf;
}
char *
ldap_now(void)
{
return ldap_strftime(time(0));
}
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