1 files changed, 163 insertions, 0 deletions
diff --git a/contrib/ldapc++/src/TlsOptions.cpp b/contrib/ldapc++/src/TlsOptions.cpp
new file mode 100644
index 0000000..609f127
--- /dev/null
+++ b/contrib/ldapc++/src/TlsOptions.cpp
@@ -0,0 +1,163 @@
+// $OpenLDAP$
+/*
+ * Copyright 2010-2022 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+
+#include <fstream>
+#include <sstream>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <unistd.h>
+#include <cstring>
+#include "TlsOptions.h"
+#include "LDAPException.h"
+
+enum opttype {
+    INT=0,
+    STRING,
+    OTHER
+};
+
+typedef struct tls_optmap {
+    int optval;
+    opttype type;
+} tls_optmap_t;
+
+static tls_optmap_t optmap[] = {
+    { LDAP_OPT_X_TLS_CACERTFILE, STRING },
+    { LDAP_OPT_X_TLS_CACERTDIR, STRING },
+    { LDAP_OPT_X_TLS_CERTFILE, STRING },
+    { LDAP_OPT_X_TLS_KEYFILE, STRING },
+    { LDAP_OPT_X_TLS_REQUIRE_CERT, INT },
+    { LDAP_OPT_X_TLS_PROTOCOL_MIN, INT },
+    { LDAP_OPT_X_TLS_CIPHER_SUITE, STRING },
+    { LDAP_OPT_X_TLS_RANDOM_FILE, STRING },
+    { LDAP_OPT_X_TLS_CRLCHECK, INT },
+    { LDAP_OPT_X_TLS_DHFILE, STRING },
+    { LDAP_OPT_X_TLS_NEWCTX, INT }
+};
+#if 0 /* not implemented currently */
+        static const int TLS_CRLFILE /* GNUtls only */
+        static const int TLS_SSL_CTX  /* OpenSSL SSL* */
+        static const int TLS_CONNECT_CB
+        static const int TLS_CONNECT_ARG
+#endif 
+
+static void checkOpt( TlsOptions::tls_option opt, opttype type ) {
+    if ( opt < TlsOptions::CACERTFILE || opt >= TlsOptions::LASTOPT ){
+        throw( LDAPException( LDAP_PARAM_ERROR, "unknown Option" ) );
+    }
+
+    if ( optmap[opt].type != type ){
+        throw( LDAPException( LDAP_PARAM_ERROR, "not a string option" ) );
+    }
+}
+
+TlsOptions::TlsOptions() : m_ld(NULL) {}
+
+TlsOptions::TlsOptions( LDAP* ld ): m_ld(ld) { }
+
+void TlsOptions::setOption( tls_option opt, const std::string& value ) const {
+    checkOpt(opt, STRING);
+    switch(opt) {
+        case TlsOptions::CACERTFILE :
+        case TlsOptions::CERTFILE :
+        case TlsOptions::KEYFILE :
+        {
+            // check if the supplied file is actually readable
+            std::ifstream ifile(value.c_str());
+            if ( !ifile ) {
+                throw( LDAPException( LDAP_LOCAL_ERROR, "Unable to open the supplied file for reading" ) );
+            }
+        }
+        break;
+        case TlsOptions::CACERTDIR :
+        {
+            struct stat st;
+            std::ostringstream msg;
+            bool fail=false;
+            int err = stat(value.c_str(),&st);
+            if ( err ) {
+                msg << strerror(errno);
+                fail = true;
+            } else {
+                if ( !S_ISDIR(st.st_mode) ){
+                    msg << "The supplied path is not a directory.";
+                    fail = true;
+                }
+            }
+            if ( fail ) {
+                std::ostringstream errstr;
+                errstr << "Error while setting Certificate Directory (" << value << "): " << msg.str();
+                throw( LDAPException( LDAP_LOCAL_ERROR, errstr.str() ) );
+            }
+        }
+        break;
+    }
+    this->setOption( opt, value.empty() ? NULL : (void*) value.c_str() );
+}
+
+void TlsOptions::setOption( tls_option opt, int value ) const {
+    checkOpt(opt, INT);
+    this->setOption( opt, (void*) &value);
+}
+
+void TlsOptions::setOption( tls_option opt, void *value ) const {
+    int ret = ldap_set_option( m_ld, optmap[opt].optval, value);
+    if ( ret != LDAP_OPT_SUCCESS )
+    {
+        if ( ret != LDAP_OPT_ERROR ){
+            throw( LDAPException( ret ));
+        } else {
+            throw( LDAPException( LDAP_PARAM_ERROR, "error while setting TLS option" ) );
+        }
+    }
+    this->newCtx();
+}
+
+void TlsOptions::getOption( tls_option opt, void* value ) const {
+    int ret = ldap_get_option( m_ld, optmap[opt].optval, value);
+    if ( ret != LDAP_OPT_SUCCESS )
+    {
+        if ( ret != LDAP_OPT_ERROR ){
+            throw( LDAPException( ret ));
+        } else {
+            throw( LDAPException( LDAP_PARAM_ERROR, "error while reading TLS option" ) );
+        }
+    }
+}
+
+int TlsOptions::getIntOption( tls_option opt ) const {
+    int value;
+    checkOpt(opt, INT);
+    ldap_get_option( m_ld, optmap[opt].optval, (void*) &value);
+    return value;
+}
+
+std::string TlsOptions::getStringOption( tls_option opt ) const {
+    char *value;
+    checkOpt(opt, STRING);
+    ldap_get_option( m_ld, optmap[opt].optval, (void*) &value);
+    std::string strval;
+    if (value)
+    {
+        strval=std::string(value);
+        ldap_memfree(value);
+    }
+    return strval;
+}
+
+void TlsOptions::newCtx() const {
+    int val = 0;
+    int ret = ldap_set_option( m_ld, LDAP_OPT_X_TLS_NEWCTX, &val);
+    if ( ret != LDAP_OPT_SUCCESS )
+    {
+        if ( ret != LDAP_OPT_ERROR ){
+            throw( LDAPException( ret ));
+        } else {
+            throw( LDAPException( LDAP_LOCAL_ERROR, "error while renewing TLS context" ) );
+        }
+    }
+}