linux_openldap_pinvoke

linux_openldap_pinvoke

using System;
using System.Runtime.InteropServices;

namespace KerberosAuth
{
    public static class NativeMethods
    {
        [DllImport("libldap-2.4.so.2")]
        public static extern int ldap_init(string host, int port);
        [DllImport("libldap-2.4.so.2")]
        public static extern int ldap_simple_bind_s(int ld, string who, string cred);
        [DllImport("libldap-2.4.so.2")]
        public static extern int ldap_set_option(int ld, int option, [In] ref int invalue );
        [DllImport("libldap-2.4.so.2")]
        public static extern int ldap_unbind_s(int ld);

//        struct ldapmsg {
//            ber_int_t		lm_msgid;	/* the message id */
//            ber_tag_t		lm_msgtype;	/* the message type */
//            BerElement	*lm_ber;	/* the ber encoded message contents */
//            struct ldapmsg	*lm_chain;	/* for search - next msg in the resp */
//            struct ldapmsg	*lm_chain_tail;
//            struct ldapmsg	*lm_next;	/* next response */
//            time_t	lm_time;	/* used to maintain cache */
//        };
//===========================================        
//        /* Data encoded in ASN.1 BER format */
//        struct berelement {
//            struct		lber_options ber_opts;
//#define ber_valid		ber_opts.lbo_valid
//#define ber_options		ber_opts.lbo_options
//#define ber_debug		ber_opts.lbo_debug
//
//            /*
//             * The members below, when not NULL/LBER_DEFAULT/etc, are:
//             *   ber_buf       Data buffer.  Other pointers normally point into it.
//             *   ber_rwptr     Read/write cursor for Sockbuf I/O.
//             *   ber_memctx    Context passed to ber_memalloc() & co.
//             * When decoding data (reading it from the BerElement):
//             *   ber_end       End of BER data.
//             *   ber_ptr       Read cursor, except for 1st octet of tags.
//             *   ber_tag       1st octet of next tag, saved from *ber_ptr when
//             *                 ber_ptr may be pointing at a tag and is >ber_buf.
//             *                 The octet *ber_ptr itself may get overwritten with
//             *                 a \0, to terminate the preceding element.
//             * When encoding data (writing it to the BerElement):
//             *   ber_end       End of allocated buffer - 1 (allowing a final \0).
//             *   ber_ptr       Last complete BER element (normally write cursor).
//             *   ber_sos_ptr   NULL or write cursor for incomplete sequence or set.
//             *   ber_sos_inner offset(seq/set length octets) if ber_sos_ptr!=NULL.
//             *   ber_tag       Default tag for next ber_printf() element.
//             *   ber_usertag   Boolean set by ber_printf "!" if it sets ber_tag.
//             *   ber_len       Reused for ber_sos_inner.
//             * When output to a Sockbuf:
//             *   ber_ptr       End of encoded data to write.
//             * When input from a Sockbuf:
//             *   See ber_get_next().
//             */
//
//            /* Do not change the order of these 3 fields! see ber_get_next */
//            ber_tag_t	ber_tag;
//            ber_len_t	ber_len;
//            ber_tag_t	ber_usertag;
//
//            char		*ber_buf;
//            char		*ber_ptr;
//            char		*ber_end;
//
//            char		*ber_sos_ptr;
//#	define		ber_sos_inner	ber_len /* reused for binary compat */
//
//            char		*ber_rwptr;
//            void		*ber_memctx;
//        };

        [StructLayout(LayoutKind.Sequential)]
        public struct BerElement
        {
            public ulong ber_tag;
            public int ber_len;
            public ulong ber_usertag;

            public string ber_buf;
            public string ber_ptr;
            public string ber_end;
            public string ber_sos_ptr;
            public string ber_rwptr;
            public IntPtr ber_memctx;
        }
        
        
        [StructLayout(LayoutKind.Sequential)]
        public struct LDAPMessage
        {
            public int lm_msgid;
            public ulong lm_mstype;
            public IntPtr lm_ber;
            public IntPtr lm_chain;
            public IntPtr lm_chain_tail;
            public IntPtr lm_next;
            public int lm_time;
        }
        
        [DllImport("libldap-2.4.so.2")]
        public static extern int ldap_search_s(int ld, string @base, int scope, string filter, string[] attrs, int attrsonly, IntPtr message);
    }
}