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-rw-r--r--src/lookups/nis.c140
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diff --git a/src/lookups/nis.c b/src/lookups/nis.c
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+/*************************************************
+* Exim - an Internet mail transport agent *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) The Exim Maintainers 2020 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+#include "../exim.h"
+#include "lf_functions.h"
+
+#include <rpcsvc/ypclnt.h>
+
+
+/*************************************************
+* Open entry point *
+*************************************************/
+
+/* See local README for interface description. This serves for both
+the "nis" and "nis0" lookup types. */
+
+static void *
+nis_open(const uschar * filename, uschar ** errmsg)
+{
+char *nis_domain;
+if (yp_get_default_domain(&nis_domain) != 0)
+ {
+ *errmsg = US"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. */
+
+static int
+nis_find(void * handle, const uschar * filename, const uschar * keystring,
+ int length, uschar ** result, uschar ** errmsg, uint * do_cache,
+ const uschar * opts)
+{
+int rc;
+uschar *nis_data;
+int nis_data_length;
+do_cache = do_cache; /* Placate picky compilers */
+if ((rc = yp_match(CCS handle, CCS filename, CCS 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. */
+
+static int
+nis0_find(void * handle, const uschar * filename, const uschar * keystring,
+ int length, uschar ** result, uschar ** errmsg, uint * do_cache,
+ const uschar * opts)
+{
+int rc;
+uschar *nis_data;
+int nis_data_length;
+do_cache = do_cache; /* Placate picky compilers */
+if ((rc = yp_match(CCS handle, CCS filename, CCS 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;
+}
+
+
+
+/*************************************************
+* Version reporting entry point *
+*************************************************/
+
+/* See local README for interface description. */
+
+#include "../version.h"
+
+void
+nis_version_report(FILE *f)
+{
+#ifdef DYNLOOKUP
+fprintf(f, "Library version: NIS: Exim version %s\n", EXIM_VERSION_STR);
+#endif
+}
+
+
+static lookup_info nis_lookup_info = {
+ .name = US"nis", /* lookup name */
+ .type = 0, /* not abs file, not query style*/
+ .open = nis_open, /* open function */
+ .check = NULL, /* check function */
+ .find = nis_find, /* find function */
+ .close = NULL, /* no close function */
+ .tidy = NULL, /* no tidy function */
+ .quote = NULL, /* no quoting function */
+ .version_report = nis_version_report /* version reporting */
+};
+
+static lookup_info nis0_lookup_info = {
+ .name = US"nis0", /* lookup name */
+ .type = 0, /* not absfile, not query style */
+ .open = nis_open, /* sic */ /* open function */
+ .check = NULL, /* check function */
+ .find = nis0_find, /* find function */
+ .close = NULL, /* no close function */
+ .tidy = NULL, /* no tidy function */
+ .quote = NULL, /* no quoting function */
+ .version_report = NULL /* no version reporting (redundant) */
+};
+
+#ifdef DYNLOOKUP
+#define nis_lookup_module_info _lookup_module_info
+#endif
+
+static lookup_info *_lookup_list[] = { &nis_lookup_info, &nis0_lookup_info };
+lookup_module_info nis_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 2 };
+
+/* End of lookups/nis.c */