New -np option to disable HAproxy proxy protocol

README

@@ -42,6 +42,7 @@ Command line options:
     -na           Disable autogenerated caps.txt
     -nm           Disable shared memory use (for debugging)
     -nr           Disable root user checking (for debugging)
+    -np           Disable HAproxy proxy protocol
 
     -d            Debug to syslog (not for production use)
     -v            Display version number and build date

gophernicus.c

@@ -451,6 +451,7 @@ void init_state(state *st)
 	st->opt_caps = TRUE;
 	st->opt_shm = TRUE;
 	st->opt_root = TRUE;
+	st->opt_proxy = TRUE;
 	st->debug = FALSE;
 
 	/* Load default suffix -> filetype mappings */
@@ -573,7 +574,7 @@ get_selector:
 
 	/* Handle HAproxy/Stunnel proxy protocol v1 */
 #ifdef ENABLE_HAPROXY1
-	if (sstrncmp(selector, "PROXY TCP") == MATCH) {
+	if (sstrncmp(selector, "PROXY TCP") == MATCH && st.opt_proxy) {
 		if (st.debug) syslog(LOG_INFO, "got proxy protocol header \"%s\"", selector);
 
 		sscanf(selector, "PROXY TCP%d %s %s %d %d",

gophernicus.h

@@ -349,6 +349,7 @@ typedef struct {
 	char opt_caps;
 	char opt_shm;
 	char opt_root;
+	char opt_proxy;
 	char debug;
 } state;
 

options.c

@@ -142,6 +142,7 @@ void parse_args(state *st, int argc, char *argv[])
 				if (*optarg == 'a') { st->opt_caps = FALSE; break; }
 				if (*optarg == 'm') { st->opt_shm = FALSE; break; }
 				if (*optarg == 'r') { st->opt_root = FALSE; break; }
+				if (*optarg == 'p') { st->opt_proxy = FALSE; break; }
 				break;
 
 			case 'd': st->debug = TRUE; break;