- add a "deref" function:

  %deref("uniqueMember", "uidNumber")

1 files changed, 88 insertions, 1 deletions

diff --git a/src/format.c b/src/format.c
index d1bbd83..842048b 100644
--- a/src/format.c
+++ b/src/format.c
@@ -106,7 +106,8 @@ format_echo(struct plugin_state *state, Slapi_PBlock *pb, Slapi_Entry *e,
 	return ret;
 }
 
-/* Echo the parameter text. */
+/* Create a list of the values of the attributes which are passed as arguments,
+ * joined by a separator given as the first argument. */
 static int
 format_list(struct plugin_state *state, Slapi_PBlock *pb, Slapi_Entry *e,
 	    const char *args, char *outbuf, int outbuf_len,
@@ -153,6 +154,91 @@ format_list(struct plugin_state *state, Slapi_PBlock *pb, Slapi_Entry *e,
 	return ret;
 }
 
+/* Look up the entry matching a DN stored in the attribute named by the first
+ * argument, pull out the values for the attribute named by the second
+ * argument, and create a list separated by either "," or the third argument,
+ * if a third argument is given. */
+static int
+format_deref(struct plugin_state *state, Slapi_PBlock *pb, Slapi_Entry *e,
+	     const char *args, char *outbuf, int outbuf_len,
+	     char ***visited_ndns)
+{
+	int i, j, len, ret, count, argc;
+	Slapi_Entry *ref;
+	Slapi_DN *refdn;
+	char **argv, **values, **refs, *attrs[3];
+	const char *sep;
+	ret = format_parse_args(state, args, &argc, &argv);
+	if (ret != 0) {
+		slapi_log_error(SLAPI_LOG_PLUGIN, state->plugin_desc->spd_id,
+				"deref: error parsing arguments\n");
+		return -1;
+	}
+	if (argc < 2) {
+		slapi_log_error(SLAPI_LOG_PLUGIN, state->plugin_desc->spd_id,
+				"deref: requires 2 arguments\n");
+		format_free_parsed_args(argv);
+		return -1;
+	}
+	refs = slapi_entry_attr_get_charray(e, argv[0]);
+	attrs[0] = argv[0];
+	attrs[1] = argv[1];
+	attrs[2] = NULL;
+	for (i = 0, count = 0; (refs != NULL) && (refs[i] != NULL); i++) {
+		refdn = slapi_sdn_new_dn_byval(refs[i]);
+		if (refdn == NULL) {
+			continue;
+		}
+		slapi_search_internal_get_entry(refdn, attrs, &ref,
+						state->plugin_identity);
+		if (ref == NULL) {
+			slapi_sdn_free(&refdn);
+			continue;
+		}
+		slapi_sdn_free(&refdn);
+		values = slapi_entry_attr_get_charray(ref, argv[1]);
+		for (j = 0;
+		     (values != NULL) && (values[j] != NULL);
+		     j++) {
+			if (count > 0) {
+				sep = (argc > 2) ? argv[2] : ",";
+				len = strlen(sep);
+				if (ret + len > outbuf_len) {
+					slapi_log_error(SLAPI_LOG_PLUGIN,
+						     state->plugin_desc->spd_id,
+						     "deref: out of space\n");
+					slapi_ch_array_free(values);
+					slapi_entry_free(ref);
+					slapi_ch_array_free(refs);
+					format_free_parsed_args(argv);
+					return -1;
+				}
+				memcpy(outbuf + ret, sep, len);
+				ret += len;
+			}
+			len = strlen(values[j]);
+			if (ret + len > outbuf_len) {
+				slapi_log_error(SLAPI_LOG_PLUGIN,
+						state->plugin_desc->spd_id,
+						"deref: out of space\n");
+				slapi_ch_array_free(values);
+				slapi_entry_free(ref);
+				slapi_ch_array_free(refs);
+				format_free_parsed_args(argv);
+				return -1;
+			}
+			memcpy(outbuf + ret, values[j], len);
+			ret += len;
+			count++;
+		}
+		slapi_ch_array_free(values);
+		slapi_entry_free(ref);
+	}
+	slapi_ch_array_free(refs);
+	format_free_parsed_args(argv);
+	return ret;
+}
+
 /* Choose a formatting function by name. */
 static void *
 format_lookup_fn(const char *fnname)
@@ -168,6 +254,7 @@ format_lookup_fn(const char *fnname)
 	} fns[] = {
 		{"echo", format_echo},
 		{"list", format_list},
+		{"deref", format_deref},
 	};
 	for (i = 0; i < sizeof(fns) / sizeof(fns[0]); i++) {
 		if ((fns[i].name != NULL) &&