MINOR: global: export many symbols.

The functions "val_payload_lv" and "val_hdr" are useful with
lua. The lua automatic binding for sample fetchs needs to
compare check functions.

The "arg_type_names" permit to display error messages.

include/proto/arg.h

@@ -48,6 +48,9 @@
 #define ARG5(m, t1, t2, t3, t4, t5) \
 	(ARG4(m, t1, t2, t3, t4) + (ARGT_##t5 << (ARGM_BITS + ARGT_BITS * 4)))
 
+/* Mapping between argument number and literal description. */
+extern const char *arg_type_names[];
+
 /* This dummy arg list may be used by default when no arg is found, it helps
  * parsers by removing pointer checks.
  */

include/proto/payload.h

@@ -27,6 +27,7 @@
 #include <types/session.h>
 
 int fetch_rdp_cookie_name(struct session *s, struct sample *smp, const char *cname, int clen);
+int val_payload_lv(struct arg *arg, char **err_msg);
 
 #endif /* _PROTO_PROTO_PAYLOAD_H */
 

include/proto/proto_http.h

@@ -131,6 +131,7 @@ enum http_meth_t find_http_meth(const char *str, const int len);
 
 struct http_req_action_kw *action_http_req_custom(const char *kw);
 struct http_res_action_kw *action_http_res_custom(const char *kw);
+int val_hdr(struct arg *arg, char **err_msg);
 
 static inline void http_req_keywords_register(struct http_req_action_kw_list *kw_list)
 {

src/arg.c

@@ -17,7 +17,7 @@
 #include <common/standard.h>
 #include <proto/arg.h>
 
-static const char *arg_type_names[ARGT_NBTYPES] = {
+const char *arg_type_names[ARGT_NBTYPES] = {
 	[ARGT_STOP] = "end of arguments",
 	[ARGT_UINT] = "unsigned integer",
 	[ARGT_SINT] = "signed integer",

src/payload.c

@@ -631,7 +631,7 @@ smp_fetch_payload(struct proxy *px, struct session *s, void *l7, unsigned int op
  * error, that the caller is responsible for freeing. The initial location must
  * either be freeable or NULL.
  */
-static int val_payload_lv(struct arg *arg, char **err_msg)
+int val_payload_lv(struct arg *arg, char **err_msg)
 {
 	if (!arg[1].data.uint) {
 		memprintf(err_msg, "payload length must be > 0");

src/proto_http.c

@@ -11364,7 +11364,7 @@ smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int
  * error message in case of error, that the caller is responsible for freeing.
  * The initial location must either be freeable or NULL.
  */
-static int val_hdr(struct arg *arg, char **err_msg)
+int val_hdr(struct arg *arg, char **err_msg)
 {
 	if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
 		memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);