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openldap/contrib/slapd-modules/nssov/nssov.c
Quanah Gibson-Mount 1df85d3427 Happy New Year!
2017-01-03 12:36:47 -08:00

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/* nssov.c - nss-ldap overlay for slapd */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2008-2017 The OpenLDAP Foundation.
* Portions Copyright 2008 by Howard Chu, Symas Corp.
* Portions Copyright 2013 by Ted C. Cheng, Symas Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENTS:
* This code references portions of the nss-ldapd package
* written by Arthur de Jong. The nss-ldapd code was forked
* from the nss-ldap library written by Luke Howard.
*/
#include "nssov.h"
#ifndef SLAPD_OVER_NSSOV
#define SLAPD_OVER_NSSOV SLAPD_MOD_DYNAMIC
#endif
#include "../slapd/config.h" /* not nss-ldapd config.h */
#include "lutil.h"
#include <ac/errno.h>
#include <ac/unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
AttributeDescription *nssov_pam_host_ad;
AttributeDescription *nssov_pam_svc_ad;
/* buffer sizes for I/O */
#define READBUFFER_MINSIZE 32
#define READBUFFER_MAXSIZE 64
#define WRITEBUFFER_MINSIZE 64
#define WRITEBUFFER_MAXSIZE 64*1024
/* Find the given attribute's value in the RDN of the DN */
void nssov_find_rdnval(struct berval *dn, AttributeDescription *ad, struct berval *value)
{
struct berval rdn;
char *next;
BER_BVZERO(value);
dnRdn( dn, &rdn );
do {
next = ber_bvchr( &rdn, '+' );
if ( rdn.bv_val[ad->ad_cname.bv_len] == '=' &&
!ber_bvcmp( &rdn, &ad->ad_cname )) {
if ( next )
rdn.bv_len = next - rdn.bv_val;
value->bv_val = rdn.bv_val + ad->ad_cname.bv_len + 1;
value->bv_len = rdn.bv_len - ad->ad_cname.bv_len - 1;
break;
}
if ( !next )
break;
next++;
rdn.bv_len -= next - rdn.bv_val;
rdn.bv_val = next;
} while (1);
}
/* create a search filter using a name that requires escaping */
int nssov_filter_byname(nssov_mapinfo *mi,int key,struct berval *name,struct berval *buf)
{
char buf2[1024];
struct berval bv2 = {sizeof(buf2),buf2};
/* escape attribute */
if (nssov_escape(name,&bv2))
return -1;
/* build filter */
if (bv2.bv_len + mi->mi_filter.bv_len + mi->mi_attrs[key].an_desc->ad_cname.bv_len + 6 >
buf->bv_len )
return -1;
buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
mi->mi_filter.bv_val, mi->mi_attrs[key].an_desc->ad_cname.bv_val,
bv2.bv_val );
return 0;
}
/* create a search filter using a string converted from an int */
int nssov_filter_byid(nssov_mapinfo *mi,int key,struct berval *id,struct berval *buf)
{
/* build filter */
if (id->bv_len + mi->mi_filter.bv_len + mi->mi_attrs[key].an_desc->ad_cname.bv_len + 6 >
buf->bv_len )
return -1;
buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
mi->mi_filter.bv_val, mi->mi_attrs[key].an_desc->ad_cname.bv_val,
id->bv_val );
return 0;
}
void get_userpassword(struct berval *attr,struct berval *pw)
{
int i;
/* go over the entries and return the remainder of the value if it
starts with {crypt} or crypt$ */
for (i=0;!BER_BVISNULL(&attr[i]);i++)
{
if (strncasecmp(attr[i].bv_val,"{crypt}",7)==0) {
pw->bv_val = attr[i].bv_val + 7;
pw->bv_len = attr[i].bv_len - 7;
return;
}
if (strncasecmp(attr[i].bv_val,"crypt$",6)==0) {
pw->bv_val = attr[i].bv_val + 6;
pw->bv_len = attr[i].bv_len - 6;
return;
}
}
/* just return the first value completely */
*pw = *attr;
/* TODO: support more password formats e.g. SMD5
(which is $1$ but in a different format)
(any code for this is more than welcome) */
}
/* this writes a single address to the stream */
int write_address(TFILE *fp,struct berval *addr)
{
int32_t tmpint32;
struct in_addr ipv4addr;
struct in6_addr ipv6addr;
/* try to parse the address as IPv4 first, fall back to IPv6 */
if (inet_pton(AF_INET,addr->bv_val,&ipv4addr)>0)
{
/* write address type */
WRITE_INT32(fp,AF_INET);
/* write the address length */
WRITE_INT32(fp,sizeof(struct in_addr));
/* write the address itself (in network byte order) */
WRITE(fp,&ipv4addr,sizeof(struct in_addr));
}
else if (inet_pton(AF_INET6,addr->bv_val,&ipv6addr)>0)
{
/* write address type */
WRITE_INT32(fp,AF_INET6);
/* write the address length */
WRITE_INT32(fp,sizeof(struct in6_addr));
/* write the address itself (in network byte order) */
WRITE(fp,&ipv6addr,sizeof(struct in6_addr));
}
else
{
/* failure, log but write simple invalid address
(otherwise the address list is messed up) */
/* TODO: have error message in correct format */
Debug(LDAP_DEBUG_ANY,"nssov: unparseable address: %s\n",addr->bv_val,0,0);
/* write an illegal address type */
WRITE_INT32(fp,-1);
/* write an empty address */
WRITE_INT32(fp,0);
}
/* we're done */
return 0;
}
int read_address(TFILE *fp,char *addr,int *addrlen,int *af)
{
int32_t tmpint32;
int len;
/* read address family */
READ_INT32(fp,*af);
if ((*af!=AF_INET)&&(*af!=AF_INET6))
{
Debug(LDAP_DEBUG_ANY,"nssov: incorrect address family specified: %d\n",*af,0,0);
return -1;
}
/* read address length */
READ_INT32(fp,len);
if ((len>*addrlen)||(len<=0))
{
Debug(LDAP_DEBUG_ANY,"nssov: address length incorrect: %d\n",len,0,0);
return -1;
}
*addrlen=len;
/* read address */
READ(fp,addr,len);
/* we're done */
return 0;
}
int nssov_escape(struct berval *src,struct berval *dst)
{
size_t pos=0;
int i;
/* go over all characters in source string */
for (i=0;i<src->bv_len;i++)
{
/* check if char will fit */
if (pos>=(dst->bv_len-4))
return -1;
/* do escaping for some characters */
switch (src->bv_val[i])
{
case '*':
strcpy(dst->bv_val+pos,"\\2a");
pos+=3;
break;
case '(':
strcpy(dst->bv_val+pos,"\\28");
pos+=3;
break;
case ')':
strcpy(dst->bv_val+pos,"\\29");
pos+=3;
break;
case '\\':
strcpy(dst->bv_val+pos,"\\5c");
pos+=3;
break;
default:
/* just copy character */
dst->bv_val[pos++]=src->bv_val[i];
break;
}
}
/* terminate destination string */
dst->bv_val[pos]='\0';
dst->bv_len = pos;
return 0;
}
/* read the version information and action from the stream
this function returns the read action in location pointer to by action */
static int read_header(TFILE *fp,int32_t *action)
{
int32_t tmpint32;
/* read the protocol version */
READ_INT32(fp,tmpint32);
if (tmpint32 != (int32_t)NSLCD_VERSION)
{
Debug( LDAP_DEBUG_TRACE,"nssov: wrong nslcd version id (%d)\n",(int)tmpint32,0,0);
return -1;
}
/* read the request type */
READ_INT32(fp,*action);
return 0;
}
int nssov_config(nssov_info *ni,TFILE *fp,Operation *op)
{
int opt;
int32_t tmpint32;
READ_INT32(fp,opt);
Debug(LDAP_DEBUG_TRACE, "nssov_config (%d)\n",opt,0,0);
WRITE_INT32(fp,NSLCD_VERSION);
WRITE_INT32(fp,NSLCD_ACTION_CONFIG_GET);
WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
switch (opt) {
case NSLCD_CONFIG_PAM_PASSWORD_PROHIBIT_MESSAGE:
/* request for pam password_prohibit_message */
/* nssov_pam prohibits password */
if (!BER_BVISEMPTY(&ni->ni_pam_password_prohibit_message)) {
Debug(LDAP_DEBUG_TRACE,"nssov_config(): %s (%s)\n",
"password_prohibit_message",
ni->ni_pam_password_prohibit_message.bv_val,0);
WRITE_STRING(fp,ni->ni_pam_password_prohibit_message.bv_val);
}
default:
/* all other config options are ignored */
break;
}
WRITE_INT32(fp,NSLCD_RESULT_END);
return 0;
}
/* read a request message, returns <0 in case of errors,
this function closes the socket */
static void handleconnection(nssov_info *ni,int sock,Operation *op)
{
TFILE *fp;
int32_t action;
int readtimeout,writetimeout;
uid_t uid;
gid_t gid;
char authid[sizeof("gidNumber=4294967295+uidNumber=424967295,cn=peercred,cn=external,cn=auth")];
char peerbuf[8];
struct berval peerbv = { sizeof(peerbuf), peerbuf };
/* log connection */
if (LUTIL_GETPEEREID(sock,&uid,&gid,&peerbv))
Debug( LDAP_DEBUG_TRACE,"nssov: connection from unknown client: %s\n",strerror(errno),0,0);
else
Debug( LDAP_DEBUG_TRACE,"nssov: connection from uid=%d gid=%d\n",
(int)uid,(int)gid,0);
/* Should do authid mapping too */
op->o_dn.bv_len = sprintf(authid,"gidNumber=%d+uidNumber=%d,cn=peercred,cn=external,cn=auth",
(int)gid, (int)uid );
op->o_dn.bv_val = authid;
op->o_ndn = op->o_dn;
/* set the timeouts:
* read timeout is half a second because clients should send their request
* quickly, write timeout is 60 seconds because clients could be taking some
* time to process the results
*/
readtimeout = 500;
writetimeout = 60000;
/* create a stream object */
if ((fp=tio_fdopen(sock,readtimeout,writetimeout,
READBUFFER_MINSIZE,READBUFFER_MAXSIZE,
WRITEBUFFER_MINSIZE,WRITEBUFFER_MAXSIZE))==NULL)
{
Debug( LDAP_DEBUG_ANY,"nssov: cannot create stream for writing: %s",strerror(errno),0,0);
(void)close(sock);
return;
}
/* read request */
if (read_header(fp,&action))
{
(void)tio_close(fp);
return;
}
/* handle request */
switch (action)
{
case NSLCD_ACTION_ALIAS_BYNAME: (void)nssov_alias_byname(ni,fp,op); break;
case NSLCD_ACTION_ALIAS_ALL: (void)nssov_alias_all(ni,fp,op); break;
case NSLCD_ACTION_ETHER_BYNAME: (void)nssov_ether_byname(ni,fp,op); break;
case NSLCD_ACTION_ETHER_BYETHER: (void)nssov_ether_byether(ni,fp,op); break;
case NSLCD_ACTION_ETHER_ALL: (void)nssov_ether_all(ni,fp,op); break;
case NSLCD_ACTION_GROUP_BYNAME: (void)nssov_group_byname(ni,fp,op); break;
case NSLCD_ACTION_GROUP_BYGID: (void)nssov_group_bygid(ni,fp,op); break;
case NSLCD_ACTION_GROUP_BYMEMBER: (void)nssov_group_bymember(ni,fp,op); break;
case NSLCD_ACTION_GROUP_ALL: (void)nssov_group_all(ni,fp,op); break;
case NSLCD_ACTION_HOST_BYNAME: (void)nssov_host_byname(ni,fp,op); break;
case NSLCD_ACTION_HOST_BYADDR: (void)nssov_host_byaddr(ni,fp,op); break;
case NSLCD_ACTION_HOST_ALL: (void)nssov_host_all(ni,fp,op); break;
case NSLCD_ACTION_NETGROUP_BYNAME: (void)nssov_netgroup_byname(ni,fp,op); break;
case NSLCD_ACTION_NETWORK_BYNAME: (void)nssov_network_byname(ni,fp,op); break;
case NSLCD_ACTION_NETWORK_BYADDR: (void)nssov_network_byaddr(ni,fp,op); break;
case NSLCD_ACTION_NETWORK_ALL: (void)nssov_network_all(ni,fp,op); break;
case NSLCD_ACTION_PASSWD_BYNAME: (void)nssov_passwd_byname(ni,fp,op); break;
case NSLCD_ACTION_PASSWD_BYUID: (void)nssov_passwd_byuid(ni,fp,op); break;
case NSLCD_ACTION_PASSWD_ALL: (void)nssov_passwd_all(ni,fp,op); break;
case NSLCD_ACTION_PROTOCOL_BYNAME: (void)nssov_protocol_byname(ni,fp,op); break;
case NSLCD_ACTION_PROTOCOL_BYNUMBER:(void)nssov_protocol_bynumber(ni,fp,op); break;
case NSLCD_ACTION_PROTOCOL_ALL: (void)nssov_protocol_all(ni,fp,op); break;
case NSLCD_ACTION_RPC_BYNAME: (void)nssov_rpc_byname(ni,fp,op); break;
case NSLCD_ACTION_RPC_BYNUMBER: (void)nssov_rpc_bynumber(ni,fp,op); break;
case NSLCD_ACTION_RPC_ALL: (void)nssov_rpc_all(ni,fp,op); break;
case NSLCD_ACTION_SERVICE_BYNAME: (void)nssov_service_byname(ni,fp,op); break;
case NSLCD_ACTION_SERVICE_BYNUMBER: (void)nssov_service_bynumber(ni,fp,op); break;
case NSLCD_ACTION_SERVICE_ALL: (void)nssov_service_all(ni,fp,op); break;
case NSLCD_ACTION_SHADOW_BYNAME: if (uid==0) (void)nssov_shadow_byname(ni,fp,op); break;
case NSLCD_ACTION_SHADOW_ALL: if (uid==0) (void)nssov_shadow_all(ni,fp,op); break;
case NSLCD_ACTION_PAM_AUTHC: (void)pam_authc(ni,fp,op,uid); break;
case NSLCD_ACTION_PAM_AUTHZ: (void)pam_authz(ni,fp,op); break;
case NSLCD_ACTION_PAM_SESS_O: if (uid==0) (void)pam_sess_o(ni,fp,op); break;
case NSLCD_ACTION_PAM_SESS_C: if (uid==0) (void)pam_sess_c(ni,fp,op); break;
case NSLCD_ACTION_PAM_PWMOD: (void)pam_pwmod(ni,fp,op,uid); break;
case NSLCD_ACTION_CONFIG_GET: (void)nssov_config(ni,fp,op); break;
default:
Debug( LDAP_DEBUG_ANY,"nssov: invalid request id: %d",(int)action,0,0);
break;
}
/* we're done with the request */
(void)tio_close(fp);
return;
}
/* accept a connection on the socket */
static void *acceptconn(void *ctx, void *arg)
{
nssov_info *ni = arg;
Connection conn = {0};
OperationBuffer opbuf;
Operation *op;
int csock;
if ( slapd_shutdown )
return NULL;
{
struct sockaddr_storage addr;
socklen_t alen;
int j;
/* accept a new connection */
alen=(socklen_t)sizeof(struct sockaddr_storage);
csock=accept(ni->ni_socket,(struct sockaddr *)&addr,&alen);
connection_client_enable(ni->ni_conn);
if (csock<0)
{
if ((errno==EINTR)||(errno==EAGAIN)||(errno==EWOULDBLOCK))
{
Debug( LDAP_DEBUG_TRACE,"nssov: accept() failed (ignored): %s",strerror(errno),0,0);
return NULL;
}
Debug( LDAP_DEBUG_ANY,"nssov: accept() failed: %s",strerror(errno),0,0);
return NULL;
}
/* make sure O_NONBLOCK is not inherited */
if ((j=fcntl(csock,F_GETFL,0))<0)
{
Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_GETFL) failed: %s",strerror(errno),0,0);
if (close(csock))
Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
return NULL;
}
if (fcntl(csock,F_SETFL,j&~O_NONBLOCK)<0)
{
Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_SETFL,~O_NONBLOCK) failed: %s",strerror(errno),0,0);
if (close(csock))
Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
return NULL;
}
}
connection_fake_init( &conn, &opbuf, ctx );
op=&opbuf.ob_op;
conn.c_ssf = conn.c_transport_ssf = local_ssf;
op->o_bd = ni->ni_db;
op->o_tag = LDAP_REQ_SEARCH;
/* handle the connection */
handleconnection(ni,csock,op);
return NULL;
}
static slap_verbmasks nss_svcs[] = {
{ BER_BVC("aliases"), NM_alias },
{ BER_BVC("ethers"), NM_ether },
{ BER_BVC("group"), NM_group },
{ BER_BVC("hosts"), NM_host },
{ BER_BVC("netgroup"), NM_netgroup },
{ BER_BVC("networks"), NM_network },
{ BER_BVC("passwd"), NM_passwd },
{ BER_BVC("protocols"), NM_protocol },
{ BER_BVC("rpc"), NM_rpc },
{ BER_BVC("services"), NM_service },
{ BER_BVC("shadow"), NM_shadow },
{ BER_BVNULL, 0 }
};
static slap_verbmasks pam_opts[] = {
{ BER_BVC("userhost"), NI_PAM_USERHOST },
{ BER_BVC("userservice"), NI_PAM_USERSVC },
{ BER_BVC("usergroup"), NI_PAM_USERGRP },
{ BER_BVC("hostservice"), NI_PAM_HOSTSVC },
{ BER_BVC("authz2dn"), NI_PAM_SASL2DN },
{ BER_BVC("uid2dn"), NI_PAM_UID2DN },
{ BER_BVNULL, 0 }
};
enum {
NSS_SSD=1,
NSS_MAP,
NSS_PAM,
NSS_PAMGROUP,
NSS_PAMSESS
};
static ConfigDriver nss_cf_gen;
static ConfigTable nsscfg[] = {
{ "nssov-ssd", "service> <url", 3, 3, 0, ARG_MAGIC|NSS_SSD,
nss_cf_gen, "(OLcfgCtAt:3.1 NAME 'olcNssSsd' "
"DESC 'URL for searches in a given service' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString )", NULL, NULL },
{ "nssov-map", "service> <orig> <new", 4, 4, 0, ARG_MAGIC|NSS_MAP,
nss_cf_gen, "(OLcfgCtAt:3.2 NAME 'olcNssMap' "
"DESC 'Map <service> lookups of <orig> attr to <new> attr' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString )", NULL, NULL },
{ "nssov-pam", "options", 2, 0, 0, ARG_MAGIC|NSS_PAM,
nss_cf_gen, "(OLcfgCtAt:3.3 NAME 'olcNssPam' "
"DESC 'PAM authentication and authorization options' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString )", NULL, NULL },
{ "nssov-pam-defhost", "hostname", 2, 2, 0, ARG_OFFSET|ARG_BERVAL,
(void *)offsetof(struct nssov_info, ni_pam_defhost),
"(OLcfgCtAt:3.4 NAME 'olcNssPamDefHost' "
"DESC 'Default hostname for service checks' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-group-dn", "DN", 2, 2, 0, ARG_MAGIC|ARG_DN|NSS_PAMGROUP,
nss_cf_gen, "(OLcfgCtAt:3.5 NAME 'olcNssPamGroupDN' "
"DESC 'DN of group in which membership is required' "
"EQUALITY distinguishedNameMatch "
"SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-group-ad", "attr", 2, 2, 0, ARG_OFFSET|ARG_ATDESC,
(void *)offsetof(struct nssov_info, ni_pam_group_ad),
"(OLcfgCtAt:3.6 NAME 'olcNssPamGroupAD' "
"DESC 'Member attribute to use for group check' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-min-uid", "uid", 2, 2, 0, ARG_OFFSET|ARG_INT,
(void *)offsetof(struct nssov_info, ni_pam_min_uid),
"(OLcfgCtAt:3.7 NAME 'olcNssPamMinUid' "
"DESC 'Minimum UID allowed to login' "
"EQUALITY integerMatch "
"SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-max-uid", "uid", 2, 2, 0, ARG_OFFSET|ARG_INT,
(void *)offsetof(struct nssov_info, ni_pam_max_uid),
"(OLcfgCtAt:3.8 NAME 'olcNssPamMaxUid' "
"DESC 'Maximum UID allowed to login' "
"EQUALITY integerMatch "
"SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-template-ad", "attr", 2, 2, 0, ARG_OFFSET|ARG_ATDESC,
(void *)offsetof(struct nssov_info, ni_pam_template_ad),
"(OLcfgCtAt:3.9 NAME 'olcNssPamTemplateAD' "
"DESC 'Attribute to use for template login name' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-template", "name", 2, 2, 0, ARG_OFFSET|ARG_BERVAL,
(void *)offsetof(struct nssov_info, ni_pam_template),
"(OLcfgCtAt:3.10 NAME 'olcNssPamTemplate' "
"DESC 'Default template login name' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-session", "service", 2, 2, 0, ARG_MAGIC|NSS_PAMSESS,
nss_cf_gen, "(OLcfgCtAt:3.11 NAME 'olcNssPamSession' "
"DESC 'Services for which sessions will be recorded' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString )", NULL, NULL },
{ "nssov-pam-password-prohibit-message",
"password_prohibit_message", 2, 2, 0,
ARG_OFFSET|ARG_BERVAL,
(void *)offsetof(struct nssov_info, ni_pam_password_prohibit_message),
"(OLcfgCtAt:3.12 NAME 'olcNssPamPwdProhibitMsg' "
"DESC 'Prohibit password modification message' "
"EQUALITY caseIgnoreMatch "
"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-pwdmgr-dn",
"pwdmgr_dn", 2, 2, 0,
ARG_OFFSET|ARG_BERVAL,
(void *)offsetof(struct nssov_info, ni_pam_pwdmgr_dn),
"(OLcfgCtAt:3.13 NAME 'olcPamPwdmgrDn' "
"DESC 'Password Manager DN' "
"EQUALITY distinguishedNameMatch "
"SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
{ "nssov-pam-pwdmgr-pwd",
"pwdmgr_pwd", 2, 2, 0,
ARG_OFFSET|ARG_BERVAL,
(void *)offsetof(struct nssov_info, ni_pam_pwdmgr_pwd),
"(OLcfgCtAt:3.14 NAME 'olcPamPwdmgrPwd' "
"DESC 'Password Manager Pwd' "
"EQUALITY octetStringMatch "
"SYNTAX OMsOctetString SINGLE-VALUE )", NULL, NULL },
{ NULL, NULL, 0,0,0, ARG_IGNORED }
};
static ConfigOCs nssocs[] = {
{ "( OLcfgCtOc:3.1 "
"NAME 'olcNssOvConfig' "
"DESC 'NSS lookup configuration' "
"SUP olcOverlayConfig "
"MAY ( olcNssSsd $ olcNssMap $ olcNssPam $ olcNssPamDefHost $ "
"olcNssPamGroupDN $ olcNssPamGroupAD $ "
"olcNssPamMinUid $ olcNssPamMaxUid $ olcNssPamSession $ "
"olcNssPamTemplateAD $ olcNssPamTemplate ) )",
Cft_Overlay, nsscfg },
{ NULL, 0, NULL }
};
static int
nss_cf_gen(ConfigArgs *c)
{
slap_overinst *on = (slap_overinst *)c->bi;
nssov_info *ni = on->on_bi.bi_private;
nssov_mapinfo *mi;
int i, j, rc = 0;
slap_mask_t m;
if ( c->op == SLAP_CONFIG_EMIT ) {
switch(c->type) {
case NSS_SSD:
rc = 1;
for (i=NM_alias;i<NM_NONE;i++) {
struct berval scope;
struct berval ssd;
struct berval base;
mi = &ni->ni_maps[i];
/* ignore all-default services */
if ( mi->mi_scope == LDAP_SCOPE_DEFAULT &&
bvmatch( &mi->mi_filter, &mi->mi_filter0 ) &&
BER_BVISNULL( &mi->mi_base ))
continue;
if ( BER_BVISNULL( &mi->mi_base ))
base = ni->ni_db->be_nsuffix[0];
else
base = mi->mi_base;
ldap_pvt_scope2bv(mi->mi_scope == LDAP_SCOPE_DEFAULT ?
LDAP_SCOPE_SUBTREE : mi->mi_scope, &scope);
ssd.bv_len = STRLENOF(" ldap:///???") + nss_svcs[i].word.bv_len +
base.bv_len + scope.bv_len + mi->mi_filter.bv_len;
ssd.bv_val = ch_malloc( ssd.bv_len + 1 );
sprintf(ssd.bv_val, "%s ldap:///%s??%s?%s", nss_svcs[i].word.bv_val,
base.bv_val, scope.bv_val, mi->mi_filter.bv_val );
ber_bvarray_add( &c->rvalue_vals, &ssd );
rc = 0;
}
break;
case NSS_MAP:
rc = 1;
for (i=NM_alias;i<NM_NONE;i++) {
mi = &ni->ni_maps[i];
for (j=0;!BER_BVISNULL(&mi->mi_attrkeys[j]);j++) {
if ( ber_bvstrcasecmp(&mi->mi_attrkeys[j],
&mi->mi_attrs[j].an_name)) {
struct berval map;
map.bv_len = nss_svcs[i].word.bv_len +
mi->mi_attrkeys[j].bv_len +
mi->mi_attrs[j].an_desc->ad_cname.bv_len + 2;
map.bv_val = ch_malloc(map.bv_len + 1);
sprintf(map.bv_val, "%s %s %s", nss_svcs[i].word.bv_val,
mi->mi_attrkeys[j].bv_val, mi->mi_attrs[j].an_desc->ad_cname.bv_val );
ber_bvarray_add( &c->rvalue_vals, &map );
rc = 0;
}
}
}
break;
case NSS_PAM:
rc = mask_to_verbs( pam_opts, ni->ni_pam_opts, &c->rvalue_vals );
break;
case NSS_PAMGROUP:
if (!BER_BVISEMPTY( &ni->ni_pam_group_dn )) {
value_add_one( &c->rvalue_vals, &ni->ni_pam_group_dn );
value_add_one( &c->rvalue_nvals, &ni->ni_pam_group_dn );
} else {
rc = 1;
}
break;
case NSS_PAMSESS:
if (ni->ni_pam_sessions) {
ber_bvarray_dup_x( &c->rvalue_vals, ni->ni_pam_sessions, NULL );
} else {
rc = 1;
}
break;
}
return rc;
} else if ( c->op == LDAP_MOD_DELETE ) {
/* FIXME */
return 1;
}
switch( c->type ) {
case NSS_SSD: {
LDAPURLDesc *lud;
i = verb_to_mask(c->argv[1], nss_svcs);
if ( i == NM_NONE )
return 1;
mi = &ni->ni_maps[i];
rc = ldap_url_parse(c->argv[2], &lud);
if ( rc )
return 1;
do {
struct berval base;
/* Must be LDAP scheme */
if (strcasecmp(lud->lud_scheme,"ldap")) {
rc = 1;
break;
}
/* Host part, attrs, and extensions must be empty */
if (( lud->lud_host && *lud->lud_host ) ||
lud->lud_attrs || lud->lud_exts ) {
rc = 1;
break;
}
ber_str2bv( lud->lud_dn,0,0,&base);
rc = dnNormalize( 0,NULL,NULL,&base,&mi->mi_base,NULL);
if ( rc )
break;
if ( lud->lud_filter ) {
/* steal this */
ber_str2bv( lud->lud_filter,0,0,&mi->mi_filter);
lud->lud_filter = NULL;
}
mi->mi_scope = lud->lud_scope;
} while(0);
ldap_free_urldesc( lud );
}
break;
case NSS_MAP:
i = verb_to_mask(c->argv[1], nss_svcs);
if ( i == NM_NONE )
return 1;
rc = 1;
mi = &ni->ni_maps[i];
for (j=0; !BER_BVISNULL(&mi->mi_attrkeys[j]); j++) {
if (!strcasecmp(c->argv[2],mi->mi_attrkeys[j].bv_val)) {
AttributeDescription *ad = NULL;
const char *text;
rc = slap_str2ad( c->argv[3], &ad, &text);
if ( rc == 0 ) {
mi->mi_attrs[j].an_desc = ad;
mi->mi_attrs[j].an_name = ad->ad_cname;
}
break;
}
}
break;
case NSS_PAM:
m = ni->ni_pam_opts;
i = verbs_to_mask(c->argc, c->argv, pam_opts, &m);
if (i == 0) {
ni->ni_pam_opts = m;
if ((m & NI_PAM_USERHOST) && !nssov_pam_host_ad) {
const char *text;
i = slap_str2ad("host", &nssov_pam_host_ad, &text);
if (i != LDAP_SUCCESS) {
snprintf(c->cr_msg, sizeof(c->cr_msg),
"nssov: host attr unknown: %s", text);
Debug(LDAP_DEBUG_ANY,"%s\n",c->cr_msg,0,0);
rc = 1;
break;
}
}
if ((m & (NI_PAM_USERSVC|NI_PAM_HOSTSVC)) && !nssov_pam_svc_ad) {
const char *text;
i = slap_str2ad("authorizedService", &nssov_pam_svc_ad, &text);
if (i != LDAP_SUCCESS) {
snprintf(c->cr_msg, sizeof(c->cr_msg),
"nssov: authorizedService attr unknown: %s", text);
Debug(LDAP_DEBUG_ANY,"%s\n",c->cr_msg,0,0);
rc = 1;
break;
}
}
} else {
rc = 1;
}
break;
case NSS_PAMGROUP:
ni->ni_pam_group_dn = c->value_ndn;
ch_free( c->value_dn.bv_val );
break;
case NSS_PAMSESS:
ber_str2bv( c->argv[1], 0, 1, &c->value_bv );
ber_bvarray_add( &ni->ni_pam_sessions, &c->value_bv );
break;
}
return rc;
}
static int
nssov_db_init(
BackendDB *be,
ConfigReply *cr )
{
slap_overinst *on = (slap_overinst *)be->bd_info;
nssov_info *ni;
int rc;
rc = nssov_pam_init();
if (rc) return rc;
ni = ch_calloc( 1, sizeof(nssov_info) );
on->on_bi.bi_private = ni;
/* set up map keys */
nssov_alias_init(ni);
nssov_ether_init(ni);
nssov_group_init(ni);
nssov_host_init(ni);
nssov_netgroup_init(ni);
nssov_network_init(ni);
nssov_passwd_init(ni);
nssov_protocol_init(ni);
nssov_rpc_init(ni);
nssov_service_init(ni);
nssov_shadow_init(ni);
ni->ni_db = be->bd_self;
ni->ni_pam_opts = NI_PAM_UID2DN;
return 0;
}
static int
nssov_db_destroy(
BackendDB *be,
ConfigReply *cr )
{
return 0;
}
static int
nssov_db_open(
BackendDB *be,
ConfigReply *cr )
{
slap_overinst *on = (slap_overinst *)be->bd_info;
nssov_info *ni = on->on_bi.bi_private;
nssov_mapinfo *mi;
int i, sock;
struct sockaddr_un addr;
/* Set default bases */
for (i=0; i<NM_NONE; i++) {
if ( BER_BVISNULL( &ni->ni_maps[i].mi_base )) {
ber_dupbv( &ni->ni_maps[i].mi_base, &be->be_nsuffix[0] );
}
if ( ni->ni_maps[i].mi_scope == LDAP_SCOPE_DEFAULT )
ni->ni_maps[i].mi_scope = LDAP_SCOPE_SUBTREE;
}
/* validate attribute maps */
mi = ni->ni_maps;
for ( i=0; i<NM_NONE; i++,mi++) {
const char *text;
int j;
for (j=0; !BER_BVISNULL(&mi->mi_attrkeys[j]); j++) {
/* skip attrs we already validated */
if ( mi->mi_attrs[j].an_desc ) continue;
if ( slap_bv2ad( &mi->mi_attrs[j].an_name,
&mi->mi_attrs[j].an_desc, &text )) {
Debug(LDAP_DEBUG_ANY,"nssov: invalid attr \"%s\": %s\n",
mi->mi_attrs[j].an_name.bv_val, text, 0 );
return -1;
}
}
BER_BVZERO(&mi->mi_attrs[j].an_name);
mi->mi_attrs[j].an_desc = NULL;
}
/* Find host and authorizedService definitions */
if ((ni->ni_pam_opts & NI_PAM_USERHOST) && !nssov_pam_host_ad)
{
const char *text;
i = slap_str2ad("host", &nssov_pam_host_ad, &text);
if (i != LDAP_SUCCESS) {
Debug(LDAP_DEBUG_ANY,"nssov: host attr unknown: %s\n",
text, 0, 0 );
return -1;
}
}
if ((ni->ni_pam_opts & (NI_PAM_USERSVC|NI_PAM_HOSTSVC)) &&
!nssov_pam_svc_ad)
{
const char *text;
i = slap_str2ad("authorizedService", &nssov_pam_svc_ad, &text);
if (i != LDAP_SUCCESS) {
Debug(LDAP_DEBUG_ANY,"nssov: authorizedService attr unknown: %s\n",
text, 0, 0 );
return -1;
}
}
if ( slapMode & SLAP_SERVER_MODE ) {
/* make sure /var/run/nslcd exists */
if (mkdir(NSLCD_PATH, (mode_t) 0555)) {
Debug(LDAP_DEBUG_TRACE,"nssov: mkdir(%s) failed (ignored): %s\n",
NSLCD_PATH,strerror(errno),0);
} else {
Debug(LDAP_DEBUG_TRACE,"nssov: created %s\n",NSLCD_PATH,0,0);
}
/* create a socket */
if ( (sock=socket(PF_UNIX,SOCK_STREAM,0))<0 )
{
Debug(LDAP_DEBUG_ANY,"nssov: cannot create socket: %s\n",strerror(errno),0,0);
return -1;
}
/* remove existing named socket */
if (unlink(NSLCD_SOCKET)<0)
{
Debug( LDAP_DEBUG_TRACE,"nssov: unlink() of "NSLCD_SOCKET" failed (ignored): %s\n",
strerror(errno),0,0);
}
/* create socket address structure */
memset(&addr,0,sizeof(struct sockaddr_un));
addr.sun_family=AF_UNIX;
strncpy(addr.sun_path,NSLCD_SOCKET,sizeof(addr.sun_path));
addr.sun_path[sizeof(addr.sun_path)-1]='\0';
/* bind to the named socket */
if (bind(sock,(struct sockaddr *)&addr,sizeof(struct sockaddr_un)))
{
Debug( LDAP_DEBUG_ANY,"nssov: bind() to "NSLCD_SOCKET" failed: %s",
strerror(errno),0,0);
if (close(sock))
Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
return -1;
}
/* close the file descriptor on exit */
if (fcntl(sock,F_SETFD,FD_CLOEXEC)<0)
{
Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_SETFL,O_NONBLOCK) failed: %s",strerror(errno),0,0);
if (close(sock))
Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
return -1;
}
/* set permissions of socket so anybody can do requests */
/* Note: we use chmod() here instead of fchmod() because
fchmod does not work on sockets
http://www.opengroup.org/onlinepubs/009695399/functions/fchmod.html
http://lkml.org/lkml/2005/5/16/11 */
if (chmod(NSLCD_SOCKET,(mode_t)0666))
{
Debug( LDAP_DEBUG_ANY,"nssov: chmod(0666) failed: %s",strerror(errno),0,0);
if (close(sock))
Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
return -1;
}
/* start listening for connections */
if (listen(sock,SOMAXCONN)<0)
{
Debug( LDAP_DEBUG_ANY,"nssov: listen() failed: %s",strerror(errno),0,0);
if (close(sock))
Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
return -1;
}
ni->ni_socket = sock;
ni->ni_conn = connection_client_setup( sock, acceptconn, ni );
}
return 0;
}
static int
nssov_db_close(
BackendDB *be,
ConfigReply *cr )
{
slap_overinst *on = (slap_overinst *)be->bd_info;
nssov_info *ni = on->on_bi.bi_private;
if ( slapMode & SLAP_SERVER_MODE ) {
/* close socket if it's still in use */
if (ni->ni_socket >= 0);
{
if (close(ni->ni_socket))
Debug( LDAP_DEBUG_ANY,"problem closing server socket (ignored): %s",strerror(errno),0,0);
ni->ni_socket = -1;
}
/* remove existing named socket */
if (unlink(NSLCD_SOCKET)<0)
{
Debug( LDAP_DEBUG_TRACE,"unlink() of "NSLCD_SOCKET" failed (ignored): %s",
strerror(errno),0,0);
}
}
return 0;
}
static slap_overinst nssov;
int
nssov_initialize( void )
{
int rc;
nssov.on_bi.bi_type = "nssov";
nssov.on_bi.bi_db_init = nssov_db_init;
nssov.on_bi.bi_db_destroy = nssov_db_destroy;
nssov.on_bi.bi_db_open = nssov_db_open;
nssov.on_bi.bi_db_close = nssov_db_close;
nssov.on_bi.bi_cf_ocs = nssocs;
rc = config_register_schema( nsscfg, nssocs );
if ( rc ) return rc;
return overlay_register(&nssov);
}
#if SLAPD_OVER_NSSOV == SLAPD_MOD_DYNAMIC
int
init_module( int argc, char *argv[] )
{
return nssov_initialize();
}
#endif
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