Add function to check if SIGs enabled

scripts/copy_from_pqclean/src/sig/sig.c/enabled_case.fragment

@@ -0,0 +1,8 @@
+{% for family in instructions['sigs'] %}{% for scheme in family['schemes'] %}
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_{{ family['name'] }}_{{ scheme['scheme'] }})) {
+#ifdef OQS_ENABLE_SIG_{{ family['name'] }}_{{ scheme['scheme'] }}
+		return 1;
+#else
+		return 0;
+#endif{% endfor %}{% endfor %}
+		

src/sig/sig.c

@@ -31,6 +31,122 @@ OQS_API int OQS_SIG_alg_count() {
 	return OQS_SIG_algs_length;
 }
 
+OQS_API int OQS_SIG_alg_is_enabled(const char *method_name) {
+	if (method_name == NULL) {
+		return 0;
+	}
+	if (0 == strcasecmp(method_name, OQS_SIG_alg_default)) {
+		return OQS_SIG_alg_is_enabled(OQS_SIG_DEFAULT);
+		///// OQS_COPY_FROM_PQCLEAN_FRAGMENT_ENABLED_CASE_START
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_dilithium_2)) {
+#ifdef OQS_ENABLE_SIG_dilithium_2
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_dilithium_3)) {
+#ifdef OQS_ENABLE_SIG_dilithium_3
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_dilithium_4)) {
+#ifdef OQS_ENABLE_SIG_dilithium_4
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_mqdss_31_48)) {
+#ifdef OQS_ENABLE_SIG_mqdss_31_48
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_mqdss_31_64)) {
+#ifdef OQS_ENABLE_SIG_mqdss_31_64
+		return 1;
+#else
+		return 0;
+#endif
+		///// OQS_COPY_FROM_PQCLEAN_FRAGMENT_ENABLED_CASE_END
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic_L1_FS)) {
+#ifdef OQS_ENABLE_SIG_picnic_L1_FS
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic_L1_UR)) {
+#ifdef OQS_ENABLE_SIG_picnic_L1_UR
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic_L3_FS)) {
+#ifdef OQS_ENABLE_SIG_picnic_L3_FS
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic_L3_UR)) {
+#ifdef OQS_ENABLE_SIG_picnic_L3_UR
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic_L5_FS)) {
+#ifdef OQS_ENABLE_SIG_picnic_L5_FS
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic_L5_UR)) {
+#ifdef OQS_ENABLE_SIG_picnic_L5_UR
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic2_L1_FS)) {
+#ifdef OQS_ENABLE_SIG_picnic2_L1_FS
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic2_L3_FS)) {
+#ifdef OQS_ENABLE_SIG_picnic2_L3_FS
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_picnic2_L5_FS)) {
+#ifdef OQS_ENABLE_SIG_picnic2_L5_FS
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_qTESLA_I)) {
+#ifdef OQS_ENABLE_SIG_qTESLA_I
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_qTESLA_III_size)) {
+#ifdef OQS_ENABLE_SIG_qTESLA_III_size
+		return 1;
+#else
+		return 0;
+#endif
+	} else if (0 == strcasecmp(method_name, OQS_SIG_alg_qTESLA_III_speed)) {
+#ifdef OQS_ENABLE_SIG_qTESLA_III_speed
+		return 1;
+#else
+		return 0;
+#endif
+		// EDIT-WHEN-ADDING-SIG
+	} else {
+		return 0;
+	}
+}
+
 OQS_API OQS_SIG *OQS_SIG_new(const char *method_name) {
 	if (method_name == NULL) {
 		return NULL;

src/sig/sig.h

@@ -184,6 +184,14 @@ OQS_API const char *OQS_SIG_alg_identifier(size_t i);
  */
 OQS_API int OQS_SIG_alg_count();
 
+/**
+ * Indicates whether the specified algorithm was enabled at compile-time or not.
+ *
+ * @param[in] method_name Name of the desired algorithm; one of the names in `OQS_SIG_algs`.
+ * @return 1 if enabled, 0 if disabled or not found
+ */
+OQS_API int OQS_SIG_alg_is_enabled(const char *method_name);
+
 /**
  * Signature schemes object
  */