code: remove side effects from right hand operands of && operator

Signed-off-by: Hans Zandbelt <hans.zandbelt@openidc.com>

ChangeLog

@@ -2,6 +2,8 @@
 - code: loop over authz arrays with index instead of pointer
 - code: avoid embedding defines in macro arguments
 - code: avoid cast warnings
+- code: add comment to empty functions
+- code: remove any side effects from right hand operands of logical && operator
 
 12/10/2024
 - github: add SonarQube analysis to Github workflows

src/util.c

@@ -1209,7 +1209,10 @@ apr_byte_t oidc_util_read_form_encoded_params(request_rec *r, apr_table_t *table
 	const char *val = NULL;
 	const char *p = data;
 
-	while (p && *p && (val = ap_getword(r->pool, &p, OIDC_CHAR_AMP))) {
+	while ((p) && (*p)) {
+		val = ap_getword(r->pool, &p, OIDC_CHAR_AMP);
+		if (val == NULL)
+			break;
 		key = ap_getword(r->pool, &val, OIDC_CHAR_EQUAL);
 		key = oidc_http_url_decode(r, key);
 		val = oidc_http_url_decode(r, val);
@@ -1646,7 +1649,10 @@ apr_hash_t *oidc_util_spaced_string_to_hashtable(apr_pool_t *pool, const char *s
 	char *val;
 	const char *data = apr_pstrdup(pool, str);
 	apr_hash_t *result = apr_hash_make(pool);
-	while (*data && (val = ap_getword_white(pool, &data))) {
+	while ((data) && (*data)) {
+		val = ap_getword_white(pool, &data);
+		if (val == NULL)
+			break;
 		apr_hash_set(result, val, APR_HASH_KEY_STRING, val);
 	}
 	return result;
@@ -1787,16 +1793,18 @@ apr_byte_t oidc_util_json_merge(request_rec *r, json_t *src, json_t *dst) {
  * add query encoded parameters to a table
  */
 void oidc_util_table_add_query_encoded_params(apr_pool_t *pool, apr_table_t *table, const char *params) {
-	if (params != NULL) {
-		char *key = NULL;
-		const char *val = NULL;
-		const char *p = params;
-		while (*p && (val = ap_getword(pool, &p, OIDC_CHAR_AMP))) {
-			key = ap_getword(pool, &val, OIDC_CHAR_EQUAL);
-			ap_unescape_url((char *)key);
-			ap_unescape_url((char *)val);
-			apr_table_add(table, key, val);
-		}
+	char *key = NULL, *value = NULL;
+	const char *v = NULL;
+	const char *p = params;
+	while ((p) && (*p)) {
+		v = ap_getword(pool, &p, OIDC_CHAR_AMP);
+		if (v == NULL)
+			break;
+		key = apr_pstrdup(pool, ap_getword(pool, &v, OIDC_CHAR_EQUAL));
+		ap_unescape_url(key);
+		value = apr_pstrdup(pool, v);
+		ap_unescape_url(value);
+		apr_table_addn(table, key, value);
 	}
 }