Add support for async DNS

1 files changed, 32 insertions, 6 deletions

diff --git a/config.h b/config.h
index 1868217..4e43e7b 100644
--- a/config.h
+++ b/config.h
@@ -1,31 +1,57 @@
 #ifndef fooconfighfoo
 #define fooconfighfoo
 
+#define _GNU_SOURCE
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <signal.h>
+
 enum cfg_value_type {
 	CFG_VAL_TYPE_INVALID,
 	CFG_VAL_TYPE_STRING,
 	CFG_VAL_TYPE_UINT16,
 	CFG_VAL_TYPE_ADDRS,
+	CFG_VAL_TYPE_ASYNC_ADDRS,
 	CFG_VAL_TYPE_BOOL,
 };
 
+struct dns_async;
+
+typedef void (dns_callback_t)(struct dns_async *);
+
+struct dns_async {
+	char name[FQDN_STR_LEN + 1];
+	char port[PORT_STR_LEN + 1];
+	struct addrinfo req;
+	struct gaicb gcb;
+	struct sigevent sev;
+	dns_callback_t *callback;
+	void *priv;
+	struct list_head list;
+};
+
 struct cfg_key_value_map {
 	const char *key_name;
 	int key_value;
 	enum cfg_value_type value_type;
 };
 
-union cfg_value {
-	const char *str;
-	uint16_t uint16;
-	struct list_head saddrs;
-	bool boolean;
+struct cfg_value {
+	enum cfg_value_type type;
+	union {
+		const char *str;
+		uint16_t uint16;
+		struct list_head saddrs;
+		struct dns_async *dns_async;
+		bool boolean;
+	};
 };
 
 bool config_parse_line(struct cfg *cfg, const char *filename, char **buf,
 		       struct cfg_key_value_map *kvmap,
 		       int *rkey, const char **rkeyname,
-		       union cfg_value *rvalue);
+		       struct cfg_value *rvalue);
 
 bool config_parse_header(struct cfg *cfg, const char *filename,
 			 const char *title, char **buf);