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/*
service.c - service entry lookup routines
Parts of this file were part of the nss_ldap library (as ldap-service.c)
which has been forked into the nss-pam-ldapd library.
Copyright (C) 1997-2005 Luke Howard
Copyright (C) 2006 West Consulting
Copyright (C) 2006-2014 Arthur de Jong
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif /* HAVE_STDINT_H */
#include "common.h"
#include "log.h"
#include "myldap.h"
#include "cfg.h"
#include "attmap.h"
/* ( nisSchema.2.3 NAME 'ipService' SUP top STRUCTURAL
* DESC 'Abstraction an Internet Protocol service.
* Maps an IP port and protocol (such as tcp or udp)
* to one or more names; the distinguished value of
* the cn attribute denotes the service's canonical
* name'
* MUST ( cn $ ipServicePort $ ipServiceProtocol )
* MAY ( description ) )
*/
/* the search base for searches */
const char *service_bases[NSS_LDAP_CONFIG_MAX_BASES] = { NULL };
/* the search scope for searches */
int service_scope = LDAP_SCOPE_DEFAULT;
/* the basic search filter for searches */
const char *service_filter = "(objectClass=ipService)";
/* the attributes to request with searches */
const char *attmap_service_cn = "cn";
const char *attmap_service_ipServicePort = "ipServicePort";
const char *attmap_service_ipServiceProtocol = "ipServiceProtocol";
/* the attribute list to request with searches */
static const char *service_attrs[4];
static int mkfilter_service_byname(const char *name, const char *protocol,
char *buffer, size_t buflen)
{
char safename[BUFLEN_SAFENAME], safeprotocol[BUFLEN_SAFENAME];
/* escape attributes */
if (myldap_escape(name, safename, sizeof(safename)))
{
log_log(LOG_ERR, "mkfilter_service_byname(): safename buffer too small");
return -1;
}
/* build filter */
if (*protocol != '\0')
{
if (myldap_escape(protocol, safeprotocol, sizeof(safeprotocol)))
{
log_log(LOG_ERR, "mkfilter_service_byname(): safeprotocol buffer too small");
return -1;
}
return mysnprintf(buffer, buflen, "(&%s(%s=%s)(%s=%s))",
service_filter, attmap_service_cn, safename,
attmap_service_ipServiceProtocol, safeprotocol);
}
else
return mysnprintf(buffer, buflen, "(&%s(%s=%s))",
service_filter, attmap_service_cn, safename);
}
static int mkfilter_service_bynumber(int number, const char *protocol,
char *buffer, size_t buflen)
{
char safeprotocol[BUFLEN_SAFENAME];
if (*protocol != '\0')
{
if (myldap_escape(protocol, safeprotocol, sizeof(safeprotocol)))
{
log_log(LOG_ERR, "mkfilter_service_bynumber(): safeprotocol buffer too small");
return -1;
}
return mysnprintf(buffer, buflen, "(&%s(%s=%d)(%s=%s))",
service_filter, attmap_service_ipServicePort, number,
attmap_service_ipServiceProtocol, safeprotocol);
}
else
return mysnprintf(buffer, buflen, "(&%s(%s=%d))",
service_filter, attmap_service_ipServicePort, number);
}
void service_init(void)
{
int i;
/* set up search bases */
if (service_bases[0] == NULL)
for (i = 0; i < NSS_LDAP_CONFIG_MAX_BASES; i++)
service_bases[i] = nslcd_cfg->bases[i];
/* set up scope */
if (service_scope == LDAP_SCOPE_DEFAULT)
service_scope = nslcd_cfg->scope;
/* set up attribute list */
service_attrs[0] = attmap_service_cn;
service_attrs[1] = attmap_service_ipServicePort;
service_attrs[2] = attmap_service_ipServiceProtocol;
service_attrs[3] = NULL;
}
static int write_service(TFILE *fp, MYLDAP_ENTRY *entry,
const char *reqname, const char *reqprotocol)
{
int32_t tmpint32, tmp2int32, tmp3int32;
const char *name;
const char **aliases;
const char **ports;
const char **protocols;
char *tmp;
long port;
int i;
/* get the most canonical name */
name = myldap_get_rdn_value(entry, attmap_service_cn);
/* get the other names for the service entries */
aliases = myldap_get_values(entry, attmap_service_cn);
if ((aliases == NULL) || (aliases[0] == NULL))
{
log_log(LOG_WARNING, "%s: %s: missing",
myldap_get_dn(entry), attmap_service_cn);
return 0;
}
/* if the service name is not yet found, get the first entry */
if (name == NULL)
name = aliases[0];
/* check case of returned services entry */
if ((reqname != NULL) && (STR_CMP(reqname, name) != 0))
{
for (i = 0; (aliases[i] != NULL) && (STR_CMP(reqname, aliases[i]) != 0); i++)
/* nothing */ ;
if (aliases[i] == NULL)
return 0; /* neither the name nor any of the aliases matched */
}
/* get the service number */
ports = myldap_get_values(entry, attmap_service_ipServicePort);
if ((ports == NULL) || (ports[0] == NULL))
{
log_log(LOG_WARNING, "%s: %s: missing",
myldap_get_dn(entry), attmap_service_ipServicePort);
return 0;
}
else if (ports[1] != NULL)
{
log_log(LOG_WARNING, "%s: %s: multiple values",
myldap_get_dn(entry), attmap_service_ipServicePort);
}
errno = 0;
port = strtol(ports[0], &tmp, 10);
if ((*(ports[0]) == '\0') || (*tmp != '\0'))
{
log_log(LOG_WARNING, "%s: %s: non-numeric value",
myldap_get_dn(entry), attmap_service_ipServicePort);
return 0;
}
else if ((errno != 0) || (port <= 0) || (port > (long)UINT16_MAX))
{
log_log(LOG_WARNING, "%s: %s: out of range",
myldap_get_dn(entry), attmap_service_ipServicePort);
return 0;
}
/* get protocols */
protocols = myldap_get_values(entry, attmap_service_ipServiceProtocol);
if ((protocols == NULL) || (protocols[0] == NULL))
{
log_log(LOG_WARNING, "%s: %s: missing",
myldap_get_dn(entry), attmap_service_ipServiceProtocol);
return 0;
}
/* write the entries */
for (i = 0; protocols[i] != NULL; i++)
if ((reqprotocol == NULL) || (*reqprotocol == '\0') ||
(STR_CMP(reqprotocol, protocols[i]) == 0))
{
WRITE_INT32(fp, NSLCD_RESULT_BEGIN);
WRITE_STRING(fp, name);
WRITE_STRINGLIST_EXCEPT(fp, aliases, name);
/* port number is actually a 16-bit value but we write 32 bits anyway */
WRITE_INT32(fp, port);
WRITE_STRING(fp, protocols[i]);
}
return 0;
}
NSLCD_HANDLE(
service, byname, NSLCD_ACTION_SERVICE_BYNAME,
char name[BUFLEN_NAME];
char protocol[BUFLEN_NAME];
char filter[BUFLEN_FILTER];
READ_STRING(fp, name);
READ_STRING(fp, protocol);
log_setrequest("service=\"%s\"%s%s", name,
*protocol != '\0' ? "/" : "", protocol);,
mkfilter_service_byname(name, protocol, filter, sizeof(filter)),
write_service(fp, entry, name, protocol)
)
NSLCD_HANDLE(
service, bynumber, NSLCD_ACTION_SERVICE_BYNUMBER,
int number;
char protocol[BUFLEN_NAME];
char filter[BUFLEN_FILTER];
READ_INT32(fp, number);
READ_STRING(fp, protocol);
log_setrequest("service=%lu%s%s", (unsigned long int)number,
*protocol != '\0' ? "/" : "", protocol);,
mkfilter_service_bynumber(number, protocol, filter, sizeof(filter)),
write_service(fp, entry, NULL, protocol)
)
NSLCD_HANDLE(
service, all, NSLCD_ACTION_SERVICE_ALL,
const char *filter;
log_setrequest("service(all)");,
(filter = service_filter, 0),
write_service(fp, entry, NULL, NULL)
)
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