+ added Scheme representation for BerElement

+ added bindings for ldap_first_attribute() and ldap_next_attribute()
+ fixed GC protection and handling of return codes for ldap_get_dn() and ldap_explode_dn()

c/ldap.c

@@ -36,6 +36,9 @@ FFIT_STRUCT_GET(scsh_ldapapiinfo_get_extensions,
 		scsh_ldapapiinfo_record_type, LDAPAPIInfo*,
 		ldapai_extensions, ffit_enter_string_array);
 
+FFIT_MAKE_ENTER_RECORD(scsh_enter_berelement, scsh_berelement_record_type,
+		       BerElement *);
+
 s48_value scsh_ldap_init(s48_value host, s48_value port)
 {
   LDAP *ldap;
@@ -45,7 +48,7 @@ s48_value scsh_ldap_init(s48_value host, s48_value port)
   ldap = ldap_init(s48_extract_string(host), s48_extract_integer(port));
   S48_GC_UNPROTECT();
   if (ldap == NULL)
-    s48_raise_os_error(error());
+    s48_raise_os_error(errno);
   else
     scsh_enter_ldap(ldap);
 }
@@ -110,6 +113,17 @@ s48_value scsh_ldap_msgfree(s48_value ldapmsg)
   return S48_UNSPECIFIC;
 }
 
+s48_value scsh_ldap_ber_free(s48_value ber, s48_value sfbuf)
+{
+  int fbuf;
+  S48_DECLARE_GC_PROTECT(2);
+  
+  S48_GC_PROTECT_2(ber, sfbuf);
+  fbuf = s48_extract_integer(sfbuf);
+  S48_GC_UNPROTECT();
+  ber_free(scsh_extract_berelement(ber), fbuf);
+}
+
 s48_value scsh_ldap_search_s(s48_value ldap, s48_value base,
 			     s48_value scope, s48_value filter,
 			     s48_value attrs, s48_value attrsonly)
@@ -199,7 +213,7 @@ s48_value scsh_ldap_count_entries(s48_value ldap, s48_value lm)
   r = ldap_count_entries(scsh_extract_ldap(ldap),
 			 scsh_extract_ldapmessage(lm));
   S48_GC_UNPROTECT();
-  return r;
+  return (r == -1) ? S48_FALSE : s48_enter_integer(r);
 }
 
 s48_value scsh_ldap_first_entry(s48_value ldap, s48_value lm)
@@ -316,13 +330,51 @@ s48_value scsh_ldap_count_references(s48_value ldap, s48_value lm)
   return (c == -1) ? S48_FALSE : s48_enter_integer(c);
 }
 
+s48_value scsh_ldap_first_attribute(s48_value ldap, s48_value entry)
+{
+  BerElement *ber;
+  char *name;
+  s48_value res_list = S48_FALSE;
+  S48_DECLARE_GC_PROTECT(3);
+
+  S48_GC_PROTECT_3(ldap, entry, res_list);
+  if ((ber = ber_alloc_t(LBER_USE_DER)) == NULL)
+    raise_ldap_memory_alloc_error();
+  
+  name = ldap_first_attribute(scsh_extract_ldap(ldap),
+			      scsh_extract_ldapmessage(entry),
+			      &ber);
+  if (name == NULL)
+    res_list = s48_list_2(S48_FALSE, S48_FALSE);
+  else
+    res_list = s48_list_2(s48_enter_string(name), 
+			  scsh_enter_berelement(ber));
+  S48_GC_UNPROTECT();
+  return res_list;
+}
+
+s48_value scsh_ldap_next_attribute(s48_value ldap, s48_value entry, s48_value ber)
+{
+  char *name;
+  s48_value res;
+  S48_DECLARE_GC_PROTECT(4);
+
+  S48_GC_PROTECT_4(ldap, entry, ber, res);
+  name = ldap_next_attribute(scsh_extract_ldap(ldap),
+			     scsh_extract_ldapmessage(entry),
+			     scsh_extract_berelement(ber));
+  res = (name == NULL) ? s48_enter_string(name) : S48_FALSE;
+  S48_GC_UNPROTECT();
+  return res;
+}
+
 s48_value scsh_ldap_msgtype(s48_value lm)
 {
   int r;
   
   FFIT_CHECK_RECORD_TYPE(lm, scsh_ldapmessage_record_type);
   r = ldap_msgtype(scsh_extract_ldapmessage(lm));
-  return s48_enter_integer(r);
+  return (r == -1) ? S48_FALSE : s48_enter_integer(r);
 }
 
 s48_value scsh_ldap_msgid(s48_value lm)
@@ -331,21 +383,24 @@ s48_value scsh_ldap_msgid(s48_value lm)
   
   FFIT_CHECK_RECORD_TYPE(lm, scsh_ldapmessage_record_type);
   r = ldap_msgid(scsh_extract_ldapmessage(lm));
-  return s48_enter_integer(r);
+  return (r == -1) ? S48_FALSE : s48_enter_integer(r);
 }
 
 /* may raise ldap error */
 s48_value scsh_ldap_get_dn(s48_value ldap, s48_value entry)
 {
   char *s;
-  S48_DECLARE_GC_PROTECT(2);
+  s48_value res;
+  S48_DECLARE_GC_PROTECT(3);
   
-  S48_GC_PROTECT_2(ldap, entry);
+  S48_GC_PROTECT_3(ldap, entry, res);
   FFIT_CHECK_RECORD_TYPE(ldap, scsh_ldap_record_type);
   FFIT_CHECK_RECORD_TYPE(entry, scsh_ldapmessage_record_type);
   s = ldap_get_dn(scsh_extract_ldap(ldap), scsh_extract_ldapmessage(entry));
+  res = (s == NULL) ? S48_FALSE : s48_enter_string(s);
   S48_GC_UNPROTECT();
-  return (s == NULL) ? S48_FALSE : s48_enter_string(s);
+  ldap_memfree(s);
+  return res;
 }
 
 s48_value scsh_ldap_explode_dn(s48_value dn, s48_value notypes)
@@ -396,7 +451,7 @@ s48_value scsh_ldap_get_values(s48_value ldap, s48_value entry,
 			       s48_value attr)
 {
   char **val;
-  s48_value res = S48_FALSE;
+  s48_value res;
   S48_DECLARE_GC_PROTECT(4);
 
   S48_GC_PROTECT_4(ldap, entry, attr, res);
@@ -406,8 +461,9 @@ s48_value scsh_ldap_get_values(s48_value ldap, s48_value entry,
   val = ldap_get_values(scsh_extract_ldap(ldap),
 			scsh_extract_ldapmessage(entry),
 			s48_extract_string(attr));
-  res = ffit_enter_string_array(val);
+  res = (val == NULL) ? S48_FALSE : ffit_enter_string_array(val);
-  ldap_value_free(val);
+  if (val != NULL) 
+    ldap_value_free(val);
   S48_GC_UNPROTECT();
   return res;
 }
@@ -474,7 +530,7 @@ s48_value scsh_ldap_get_set_option(s48_value ldap, s48_value option,
   s48_value res, res_list;
   S48_DECLARE_GC_PROTECT(6);
 
-  S48_GC_PROTECT(ldap, option, set, inval, res, res_list);
+  S48_GC_PROTECT_6(ldap, option, set, inval, res, res_list);
   FFIT_CHECK_RECORD_TYPE(ldap, scsh_ldap_record_type);
   FFIT_CHECK_BOOLEAN(set);
   ld = scsh_extract_ldap(ldap);
@@ -625,6 +681,8 @@ void scsh_init_ldap_bindings(void)
   S48_EXPORT_FUNCTION(scsh_ldapapiinfo_get_vendor_version);
   S48_EXPORT_FUNCTION(scsh_ldapapiinfo_get_extensions);
 
+  FFIT_RECORD_TYPE_INIT(scsh_berelement_record_type, ber-element);
+
   S48_EXPORT_FUNCTION(scsh_ldap_init);
   S48_EXPORT_FUNCTION(scsh_ldap_simple_bind_s);
   S48_EXPORT_FUNCTION(scsh_ldap_sasl_bind_s);
@@ -633,6 +691,7 @@ void scsh_init_ldap_bindings(void)
   S48_EXPORT_FUNCTION(scsh_ldap_result_error);
   S48_EXPORT_FUNCTION(scsh_ldap_memfree);
   S48_EXPORT_FUNCTION(scsh_ldap_msgfree);
+  S48_EXPORT_FUNCTION(scsh_ldap_ber_free);
   S48_EXPORT_FUNCTION(scsh_ldap_search_s);
   S48_EXPORT_FUNCTION(scsh_ldap_search_st);
   S48_EXPORT_FUNCTION(scsh_ldap_compare_s);
@@ -645,6 +704,8 @@ void scsh_init_ldap_bindings(void)
   S48_EXPORT_FUNCTION(scsh_ldap_first_reference);
   S48_EXPORT_FUNCTION(scsh_ldap_next_reference);
   S48_EXPORT_FUNCTION(scsh_ldap_count_references);
+  S48_EXPORT_FUNCTION(scsh_ldap_first_attribute);
+  S48_EXPORT_FUNCTION(scsh_ldap_next_attribute);
   S48_EXPORT_FUNCTION(scsh_ldap_msgtype);
   S48_EXPORT_FUNCTION(scsh_ldap_msgid);
   S48_EXPORT_FUNCTION(scsh_ldap_get_dn);

c/scsh-ldap.h

@@ -13,15 +13,18 @@
 # endif
 #endif
 
+#include "errno.h"
 #include "scheme48.h"
 #include "ffi-tools/ffi-tools.h"
 
 #include <ldap.h>
+#include <lber.h>
 
 static s48_value scsh_ldap_record_type = S48_FALSE;
 static s48_value scsh_ldapmessage_record_type = S48_FALSE;
 static s48_value scsh_ldapmod_record_type = S48_FALSE;
 static s48_value scsh_ldapapiinfo_record_type = S48_FALSE;
+static s48_value scsh_berelement_record_type = S48_FALSE;
 
 FFIT_MAKE_ENTER_RECORD_PROTOTYPE(scsh_enter_ldap, LDAP*);
 #define scsh_extract_ldap(x) \
@@ -43,6 +46,11 @@ FFIT_MAKE_ENTER_RECORD_PROTOTYPE(scsh_enter_ldapapiinfo, LDAPAPIInfo*);
 	((LDAPAPIInfo *) \
 	s48_extract_integer(S48_RECORD_REF(x, 0)))
 
+FFIT_MAKE_ENTER_RECORD_PROTOTYPE(scsh_enter_berelement, BerElement*);
+#define scsh_extract_berelement(x) \
+	((BerElement *) \
+	s48_extract_integer(S48_RECORD_REF(x, 0)))
+
 /* conditions */
 static s48_value condition_ldap_memory_alloc_error = S48_FALSE;
 static s48_value condition_ldap_feature_not_supported = S48_FALSE;