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-rw-r--r--contrib/slapd-modules/nssov/nssov.h347
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diff --git a/contrib/slapd-modules/nssov/nssov.h b/contrib/slapd-modules/nssov/nssov.h
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+++ b/contrib/slapd-modules/nssov/nssov.h
@@ -0,0 +1,347 @@
+/* nssov.h - NSS overlay header file */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008-2021 The OpenLDAP Foundation.
+ * Portions Copyright 2008 Howard Chu.
+ * Portions Copyright 2013 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>.
+ */
+
+#ifndef NSSOV_H
+#define NSSOV_H
+
+#ifndef NSLCD_PATH
+#define NSLCD_PATH "/var/run/nslcd"
+#endif
+
+#ifndef NSLCD_SOCKET
+#define NSLCD_SOCKET NSLCD_PATH "/socket"
+#endif
+
+#include <stdio.h>
+
+#include "nslcd.h"
+#include "nslcd-prot.h"
+#include "tio.h"
+#include "attrs.h"
+
+#undef PACKAGE_BUGREPORT
+#undef PACKAGE_NAME
+#undef PACKAGE_STRING
+#undef PACKAGE_TARNAME
+#undef PACKAGE_VERSION
+
+#include "portable.h"
+#include "slap.h"
+#include <ac/string.h>
+
+/* selectors for different maps */
+enum nssov_map_selector
+{
+ NM_alias,
+ NM_ether,
+ NM_group,
+ NM_host,
+ NM_netgroup,
+ NM_network,
+ NM_passwd,
+ NM_protocol,
+ NM_rpc,
+ NM_service,
+ NM_shadow,
+ NM_NONE
+};
+
+typedef struct nssov_mapinfo {
+ struct berval mi_base;
+ int mi_scope;
+ struct berval mi_filter0;
+ struct berval mi_filter;
+ struct berval *mi_attrkeys;
+ AttributeName *mi_attrs;
+} nssov_mapinfo;
+
+typedef struct nssov_info
+{
+ /* search timelimit */
+ int ni_timelimit;
+ struct nssov_mapinfo ni_maps[NM_NONE];
+ int ni_socket;
+ Connection *ni_conn;
+ BackendDB *ni_db;
+
+ /* PAM authz support... */
+ slap_mask_t ni_pam_opts;
+ struct berval ni_pam_group_dn;
+ AttributeDescription *ni_pam_group_ad;
+ int ni_pam_min_uid;
+ int ni_pam_max_uid;
+ AttributeDescription *ni_pam_template_ad;
+ struct berval ni_pam_template;
+ struct berval ni_pam_defhost;
+ struct berval *ni_pam_sessions;
+ struct berval ni_pam_password_prohibit_message;
+ struct berval ni_pam_pwdmgr_dn;
+ struct berval ni_pam_pwdmgr_pwd;
+} nssov_info;
+
+#define NI_PAM_USERHOST 1 /* old style host checking */
+#define NI_PAM_USERSVC 2 /* old style service checking */
+#define NI_PAM_USERGRP 4 /* old style group checking */
+#define NI_PAM_HOSTSVC 8 /* new style authz checking */
+#define NI_PAM_SASL2DN 0x10 /* use sasl2dn */
+#define NI_PAM_UID2DN 0x20 /* use uid2dn */
+
+#define NI_PAM_OLD (NI_PAM_USERHOST|NI_PAM_USERSVC|NI_PAM_USERGRP)
+#define NI_PAM_NEW NI_PAM_HOSTSVC
+
+extern AttributeDescription *nssov_pam_host_ad;
+extern AttributeDescription *nssov_pam_svc_ad;
+
+/* Read the default configuration file. */
+void nssov_cfg_init(nssov_info *ni,const char *fname);
+
+/* macros for basic read and write operations, the following
+ ERROR_OUT* marcos define the action taken on errors
+ the stream is not closed because the caller closes the
+ stream */
+
+#define ERROR_OUT_WRITEERROR(fp) \
+ Debug(LDAP_DEBUG_ANY,"nssov: error writing to client\n",0,0,0); \
+ return -1;
+
+#define ERROR_OUT_READERROR(fp) \
+ Debug(LDAP_DEBUG_ANY,"nssov: error reading from client\n",0,0,0); \
+ return -1;
+
+#define ERROR_OUT_BUFERROR(fp) \
+ Debug(LDAP_DEBUG_ANY,"nssov: client supplied argument too large\n",0,0,0); \
+ return -1;
+
+#define WRITE_BERVAL(fp, bv) \
+ DEBUG_PRINT("WRITE_BERVAL: var="__STRING(bv)" bv_val=\"%s\"", (bv)->bv_val); \
+ if ((bv) == NULL) \
+ { \
+ WRITE_INT32(fp, 0); \
+ } \
+ else \
+ { \
+ WRITE_INT32(fp, (bv)->bv_len); \
+ tmpint32 = ntohl(tmpint32); \
+ if (tmpint32 > 0) \
+ { \
+ WRITE(fp, (bv)->bv_val, tmpint32); \
+ } \
+ } \
+
+#define WRITE_BVARRAY(fp, arr) \
+ if ((arr) == NULL) \
+ { \
+ DEBUG_PRINT("WRITE_BVARRAY: var="__STRING(arr)" num=%d", 0); \
+ WRITE_INT32(fp, 0); \
+ } \
+ else \
+ { \
+ /* first determine length of array */ \
+ for (tmp3int32 = 0; (arr)[tmp3int32].bv_val != NULL; tmp3int32++) \
+ /* nothing */ ; \
+ /* write number of strings */ \
+ DEBUG_PRINT("WRITE_BVARRAY: var="__STRING(arr)" num=%d", (int)tmp3int32); \
+ WRITE_INT32(fp, tmp3int32); \
+ /* write strings */ \
+ for (tmp2int32 = 0; tmp2int32 < tmp3int32; tmp2int32++) \
+ { \
+ WRITE_BERVAL(fp, &(arr)[tmp2int32]); \
+ } \
+ } \
+
+/* Find the given attribute's value in the RDN of the DN. */
+void nssov_find_rdnval(struct berval *dn,AttributeDescription *ad,struct berval *value);
+
+/* This tries to get the user password attribute from the entry.
+ It will try to return an encrypted password as it is used in /etc/passwd,
+ /etc/group or /etc/shadow depending upon what is in the directory.
+ This function will return NULL if no passwd is found and will return the
+ literal value in the directory if conversion is not possible. */
+void get_userpassword(struct berval *attr, struct berval *pw);
+
+/* write out an address, parsing the addr value */
+int write_address(TFILE *fp,struct berval *addr);
+
+/* a helper macro to write out addresses and bail out on errors */
+#define WRITE_ADDRESS(fp,addr) \
+ if (write_address(fp,addr)) \
+ return -1;
+
+/* read an address from the stream */
+int read_address(TFILE *fp,char *addr,int *addrlen,int *af);
+
+/* helper macro to read an address from the stream */
+#define READ_ADDRESS(fp,addr,len,af) \
+ len=(int)sizeof(addr); \
+ if (read_address(fp,addr,&(len),&(af))) \
+ return -1;
+
+/* checks to see if the specified string is a valid username */
+int isvalidusername(struct berval *name);
+
+/* transforms the DN into a uid doing an LDAP lookup if needed */
+int nssov_dn2uid(Operation *op,nssov_info *ni,struct berval *dn,struct berval *uid);
+
+/* transforms the uid into a DN by doing an LDAP lookup */
+int nssov_uid2dn(Operation *op,nssov_info *ni,struct berval *uid,struct berval *dn);
+int nssov_name2dn_cb(Operation *op, SlapReply *rs);
+
+/* Escapes characters in a string for use in a search filter. */
+int nssov_escape(struct berval *src,struct berval *dst);
+
+int nssov_filter_byname(nssov_mapinfo *mi,int key,struct berval *name,struct berval *buf);
+int nssov_filter_byid(nssov_mapinfo *mi,int key,struct berval *id,struct berval *buf);
+
+void nssov_alias_init(nssov_info *ni);
+void nssov_ether_init(nssov_info *ni);
+void nssov_group_init(nssov_info *ni);
+void nssov_host_init(nssov_info *ni);
+void nssov_netgroup_init(nssov_info *ni);
+void nssov_network_init(nssov_info *ni);
+void nssov_passwd_init(nssov_info *ni);
+void nssov_protocol_init(nssov_info *ni);
+void nssov_rpc_init(nssov_info *ni);
+void nssov_service_init(nssov_info *ni);
+void nssov_shadow_init(nssov_info *ni);
+
+int nssov_pam_init(void);
+
+/* these are the different functions that handle the database
+ specific actions, see nslcd.h for the action descriptions */
+int nssov_alias_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_alias_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_ether_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_ether_byether(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_ether_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_group_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_group_bygid(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_group_bymember(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_group_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_host_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_host_byaddr(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_host_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_netgroup_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_network_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_network_byaddr(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_network_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_passwd_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_passwd_byuid(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_passwd_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_protocol_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_protocol_bynumber(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_protocol_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_rpc_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_rpc_bynumber(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_rpc_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_service_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_service_bynumber(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_service_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_shadow_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_shadow_all(nssov_info *ni,TFILE *fp,Operation *op);
+int pam_authc(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid);
+int pam_authz(nssov_info *ni,TFILE *fp,Operation *op);
+int pam_sess_o(nssov_info *ni,TFILE *fp,Operation *op);
+int pam_sess_c(nssov_info *ni,TFILE *fp,Operation *op);
+int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid);
+
+/* config initialization */
+#define NSSOV_INIT(db) \
+ void nssov_##db##_init(nssov_info *ni) \
+ { \
+ nssov_mapinfo *mi = &ni->ni_maps[NM_##db]; \
+ int i; \
+ for (i=0;!BER_BVISNULL(&db##_keys[i]);i++); \
+ i++; \
+ mi->mi_attrs = ch_malloc( i*sizeof(AttributeName)); \
+ for (i=0;!BER_BVISNULL(&db##_keys[i]);i++) { \
+ mi->mi_attrs[i].an_name = db##_keys[i]; \
+ mi->mi_attrs[i].an_desc = NULL; \
+ } \
+ mi->mi_scope = LDAP_SCOPE_DEFAULT; \
+ mi->mi_filter0 = db##_filter; \
+ ber_dupbv( &mi->mi_filter, &mi->mi_filter0 ); \
+ mi->mi_filter = db##_filter; \
+ mi->mi_attrkeys = db##_keys; \
+ BER_BVZERO(&mi->mi_base); \
+ }
+
+/* param structure for search callback */
+#define NSSOV_CBPRIV(db,parms) \
+ typedef struct nssov_##db##_cbp { \
+ nssov_mapinfo *mi; \
+ TFILE *fp; \
+ Operation *op; \
+ parms \
+ } nssov_##db##_cbp
+
+/* callback for writing search results */
+#define NSSOV_CB(db) \
+ static int nssov_##db##_cb(Operation *op, SlapReply *rs) \
+ { \
+ if ( rs->sr_type == REP_SEARCH ) { \
+ nssov_##db##_cbp *cbp = op->o_callback->sc_private; \
+ if (write_##db(cbp,rs->sr_entry)) return LDAP_OTHER; \
+ } \
+ return LDAP_SUCCESS; \
+ } \
+
+/* macro for generating service handling code */
+#define NSSOV_HANDLE(db,fn,readfn,logcall,action,mkfilter) \
+ int nssov_##db##_##fn(nssov_info *ni,TFILE *fp,Operation *op) \
+ { \
+ /* define common variables */ \
+ int32_t tmpint32; \
+ nssov_##db##_cbp cbp; \
+ slap_callback cb = {0}; \
+ SlapReply rs = {REP_RESULT}; \
+ cbp.mi = &ni->ni_maps[NM_##db]; \
+ cbp.fp = fp; \
+ cbp.op = op; \
+ /* read request parameters */ \
+ readfn; \
+ /* log call */ \
+ logcall; \
+ /* write the response header */ \
+ WRITE_INT32(fp,NSLCD_VERSION); \
+ WRITE_INT32(fp,action); \
+ /* prepare the search filter */ \
+ if (mkfilter) \
+ { \
+ Debug(LDAP_DEBUG_ANY,"nssov_" __STRING(db) "_" __STRING(fn) "(): filter buffer too small",0,0,0); \
+ return -1; \
+ } \
+ cb.sc_private = &cbp; \
+ op->o_callback = &cb; \
+ cb.sc_response = nssov_##db##_cb; \
+ slap_op_time( &op->o_time, &op->o_tincr ); \
+ op->o_req_dn = cbp.mi->mi_base; \
+ op->o_req_ndn = cbp.mi->mi_base; \
+ op->ors_scope = cbp.mi->mi_scope; \
+ op->ors_filterstr = filter; \
+ op->ors_filter = str2filter_x( op, filter.bv_val ); \
+ op->ors_attrs = cbp.mi->mi_attrs; \
+ op->ors_tlimit = SLAP_NO_LIMIT; \
+ op->ors_slimit = SLAP_NO_LIMIT; \
+ /* do the internal search */ \
+ op->o_bd->be_search( op, &rs ); \
+ filter_free_x( op, op->ors_filter, 1 ); \
+ WRITE_INT32(fp,NSLCD_RESULT_END); \
+ return 0; \
+ }
+
+#endif /* NSSOV_H */