Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 347 insertions, 0 deletions

diff --git a/contrib/slapd-modules/nssov/nssov.h b/contrib/slapd-modules/nssov/nssov.h
new file mode 100644
index 0000000..9677e21
--- /dev/null
+++ 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 */