+/* Check for match between two dist point names: three separate cases.
+ * 1. Both are relative names and compare X509_NAME types.
+ * 2. One full, one relative. Compare X509_NAME to GENERAL_NAMES.
+ * 3. Both are full names and compare two GENERAL_NAMES.
+ */
+
+
+static int idp_check_dp(DIST_POINT_NAME *a, DIST_POINT_NAME *b)
+ {
+ X509_NAME *nm = NULL;
+ GENERAL_NAMES *gens = NULL;
+ GENERAL_NAME *gena, *genb;
+ int i, j;
+ if (a->type == 1)
+ {
+ if (!a->dpname)
+ return 0;
+ /* Case 1: two X509_NAME */
+ if (b->type == 1)
+ {
+ if (!b->dpname)
+ return 0;
+ if (!X509_NAME_cmp(a->dpname, b->dpname))
+ return 1;
+ else
+ return 0;
+ }
+ /* Case 2: set name and GENERAL_NAMES appropriately */
+ nm = a->dpname;
+ gens = b->name.fullname;
+ }
+ else if (b->type == 1)
+ {
+ if (!b->dpname)
+ return 0;
+ /* Case 2: set name and GENERAL_NAMES appropriately */
+ gens = a->name.fullname;
+ nm = b->dpname;
+ }
+
+ /* Handle case 2 with one GENERAL_NAMES and one X509_NAME */
+ if (nm)
+ {
+ for (i = 0; i < sk_GENERAL_NAME_num(gens); i++)
+ {
+ gena = sk_GENERAL_NAME_value(gens, i);
+ if (gena->type != GEN_DIRNAME)
+ continue;
+ if (!X509_NAME_cmp(nm, gena->d.directoryName))
+ return 1;
+ }
+ return 0;
+ }
+
+ /* Else case 3: two GENERAL_NAMES */
+
+ for (i = 0; i < sk_GENERAL_NAME_num(a->name.fullname); i++)
+ {
+ gena = sk_GENERAL_NAME_value(a->name.fullname, i);
+ for (j = 0; j < sk_GENERAL_NAME_num(b->name.fullname); j++)
+ {
+ genb = sk_GENERAL_NAME_value(b->name.fullname, j);
+ if (!GENERAL_NAME_cmp(gena, genb))
+ return 1;
+ }
+ }
+
+ return 0;
+
+ }