Start

[exim.git] / src / src / lookups / nis.c

diff --git a/src/src/lookups/nis.c b/src/src/lookups/nis.c
new file mode 100644 (file)
index 0000000..bbb85b5
--- /dev/null
+++ b/src/src/lookups/nis.c
@@ -0,0 +1,104 @@
+/* $Cambridge: exim/src/src/lookups/nis.c,v 1.1 2004/10/07 13:10:01 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1995 - 2004 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+#include "../exim.h"
+#include "lf_functions.h"
+#include "nis.h"
+
+/* We can't just compile this code and allow the library mechanism to omit the
+functions if they are not wanted, because we need to have the NIS header
+available for compiling. Therefore, compile these functions only if LOOKUP_NIS
+is defined. However, some compilers don't like compiling empty modules, so keep
+them happy with a dummy when skipping the rest. Make it reference itself to
+stop picky compilers complaining that it is unused, and put in a dummy argument
+to stop even pickier compilers complaining about infinite loops. */
+
+#ifndef LOOKUP_NIS
+static void dummy(int x) { dummy(x-1); }
+#else
+
+#include <rpcsvc/ypclnt.h>
+
+
+/*************************************************
+*              Open entry point                  *
+*************************************************/
+
+/* See local README for interface description. This serves for both
+the "nis" and "nis0" lookup types. */
+
+void *
+nis_open(uschar *filename, uschar **errmsg)
+{
+char *nis_domain;
+if (yp_get_default_domain(&nis_domain) != 0)
+  {
+  *errmsg = string_sprintf("failed to get default NIS domain");
+  return NULL;
+  }
+return nis_domain;
+}
+
+
+
+/*************************************************
+*           Find entry point for nis             *
+*************************************************/
+
+/* See local README for interface description. A separate function is used
+for nis0 because they are so short it isn't worth trying to use any common
+code. */
+
+int
+nis_find(void *handle, uschar *filename, uschar *keystring, int length,
+  uschar **result, uschar **errmsg, BOOL *do_cache)
+{
+int rc;
+uschar *nis_data;
+int nis_data_length;
+do_cache = do_cache;   /* Placate picky compilers */
+if ((rc = yp_match(CS handle, CS filename, CS keystring, length,
+    CSS &nis_data, &nis_data_length)) == 0)
+  {
+  *result = string_copy(nis_data);
+  (*result)[nis_data_length] = 0;    /* remove final '\n' */
+  return OK;
+  }
+return (rc == YPERR_KEY || rc == YPERR_MAP)? FAIL : DEFER;
+}
+
+
+
+/*************************************************
+*           Find entry point for nis0            *
+*************************************************/
+
+/* See local README for interface description. */
+
+int
+nis0_find(void *handle, uschar *filename, uschar *keystring, int length,
+  uschar **result, uschar **errmsg, BOOL *do_cache)
+{
+int rc;
+uschar *nis_data;
+int nis_data_length;
+do_cache = do_cache;   /* Placate picky compilers */
+if ((rc = yp_match(CS handle, CS filename, CS keystring, length + 1,
+    CSS &nis_data, &nis_data_length)) == 0)
+  {
+  *result = string_copy(nis_data);
+  (*result)[nis_data_length] = 0;    /* remove final '\n' */
+  return OK;
+  }
+return (rc == YPERR_KEY || rc == YPERR_MAP)? FAIL : DEFER;
+}
+
+#endif  /* LOOKUP_NIS */
+
+/* End of lookups/nis.c */