Force concurrent LdapConnection in new process (#41880)

* Ensure an initial non-concurrent call to OpenLDAP

OpenLDAP requires a single call for initialization before any other concurrent call.

This fixes asserts and segfaults we were seeing when calling OpenLDAP concurrently.

Author: ericstj

src/libraries/Common/src/Interop/Interop.Ldap.cs

@@ -96,6 +96,7 @@ internal enum LdapOption
         LDAP_OPT_AREC_EXCLUSIVE = 0x98, // Not Supported in Linux
         LDAP_OPT_SECURITY_CONTEXT = 0x99,
         LDAP_OPT_ROOTDSE_CACHE = 0x9a, // Not Supported in Linux
+        LDAP_OPT_DEBUG_LEVEL = 0x5001,
         LDAP_OPT_X_SASL_REALM = 0x6101,
         LDAP_OPT_X_SASL_AUTHCID = 0x6102,
         LDAP_OPT_X_SASL_AUTHZID = 0x6103

src/libraries/Common/src/Interop/Linux/OpenLdap/Interop.Ber.cs

@@ -7,45 +7,48 @@
 
 internal static partial class Interop
 {
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_alloc_t", CharSet = CharSet.Ansi)]
-    public static extern IntPtr ber_alloc(int option);
+    internal static partial class Ldap
+    {
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_alloc_t", CharSet = CharSet.Ansi)]
+        public static extern IntPtr ber_alloc(int option);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_init", CharSet = CharSet.Ansi)]
-    public static extern IntPtr ber_init(berval value);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_init", CharSet = CharSet.Ansi)]
+        public static extern IntPtr ber_init(berval value);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_free", CharSet = CharSet.Ansi)]
-    public static extern IntPtr ber_free([In] IntPtr berelement, int option);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_free", CharSet = CharSet.Ansi)]
+        public static extern IntPtr ber_free([In] IntPtr berelement, int option);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_printf", CharSet = CharSet.Ansi)]
-    public static extern int ber_printf_emptyarg(SafeBerHandle berElement, string format);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_printf", CharSet = CharSet.Ansi)]
+        public static extern int ber_printf_emptyarg(SafeBerHandle berElement, string format);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_printf", CharSet = CharSet.Ansi)]
-    public static extern int ber_printf_int(SafeBerHandle berElement, string format, int value);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_printf", CharSet = CharSet.Ansi)]
+        public static extern int ber_printf_int(SafeBerHandle berElement, string format, int value);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_printf", CharSet = CharSet.Ansi)]
-    public static extern int ber_printf_bytearray(SafeBerHandle berElement, string format, HGlobalMemHandle value, int length);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_printf", CharSet = CharSet.Ansi)]
+        public static extern int ber_printf_bytearray(SafeBerHandle berElement, string format, HGlobalMemHandle value, int length);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_printf", CharSet = CharSet.Ansi)]
-    public static extern int ber_printf_berarray(SafeBerHandle berElement, string format, IntPtr value);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_printf", CharSet = CharSet.Ansi)]
+        public static extern int ber_printf_berarray(SafeBerHandle berElement, string format, IntPtr value);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_flatten", CharSet = CharSet.Ansi)]
-    public static extern int ber_flatten(SafeBerHandle berElement, ref IntPtr value);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_flatten", CharSet = CharSet.Ansi)]
+        public static extern int ber_flatten(SafeBerHandle berElement, ref IntPtr value);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_bvfree", CharSet = CharSet.Ansi)]
-    public static extern int ber_bvfree(IntPtr value);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_bvfree", CharSet = CharSet.Ansi)]
+        public static extern int ber_bvfree(IntPtr value);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_bvecfree", CharSet = CharSet.Ansi)]
-    public static extern int ber_bvecfree(IntPtr value);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_bvecfree", CharSet = CharSet.Ansi)]
+        public static extern int ber_bvecfree(IntPtr value);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_scanf", CharSet = CharSet.Ansi)]
-    public static extern int ber_scanf(SafeBerHandle berElement, string format);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_scanf", CharSet = CharSet.Ansi)]
+        public static extern int ber_scanf(SafeBerHandle berElement, string format);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_scanf", CharSet = CharSet.Ansi)]
-    public static extern int ber_scanf_int(SafeBerHandle berElement, string format, ref int value);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_scanf", CharSet = CharSet.Ansi)]
+        public static extern int ber_scanf_int(SafeBerHandle berElement, string format, ref int value);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_scanf", CharSet = CharSet.Ansi)]
-    public static extern int ber_scanf_bitstring(SafeBerHandle berElement, string format, ref IntPtr value, ref int bitLength);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_scanf", CharSet = CharSet.Ansi)]
+        public static extern int ber_scanf_bitstring(SafeBerHandle berElement, string format, ref IntPtr value, ref int bitLength);
 
-    [DllImport(Libraries.OpenLdap, EntryPoint = "ber_scanf", CharSet = CharSet.Ansi)]
-    public static extern int ber_scanf_ptr(SafeBerHandle berElement, string format, ref IntPtr value);
+        [DllImport(Libraries.OpenLdap, EntryPoint = "ber_scanf", CharSet = CharSet.Ansi)]
+        public static extern int ber_scanf_ptr(SafeBerHandle berElement, string format, ref IntPtr value);
+    }
 }