add "mime" and "default type" option for the configuration

gmid.h

@@ -149,8 +149,10 @@ extern int yylex(void);
 
 /* mime.c */
 void		 init_mime(void);
+void		 set_default_mime(const char*);
 void		 add_mime(const char*, const char*);
 void		 load_default_mime(void);
+int		 load_mime_file(const char*);
 const char	*mime(const char*);
 
 /* server.c */

lex.l

@@ -55,6 +55,9 @@ daemon		return TDAEMON;
 ipv6		return TIPV6;
 port		return TPORT;
 protocols	return TPROTOCOLS;
+mime		return TMIME;
+default		return TDEFAULT;
+type		return TTYPE;
 server		return TSERVER;
 
 cert		return TCERT;

mime.c

@@ -26,6 +26,7 @@ struct etm {			/* extension to mime */
 };
 
 struct mimes {
+	char		*def;
 	struct etm	*t;
 	size_t		len;
 	size_t		cap;
@@ -41,6 +42,19 @@ init_mime(void)
 
 	if ((mimes.t = calloc(mimes.cap, sizeof(struct etm))) == NULL)
 		fatal("calloc: %s", strerror(errno));
+
+	mimes.def = strdup("application/octet-stream");
+	if (mimes.def == NULL)
+		fatal("strdup: %s", strerror(errno));
+
+}
+
+void
+set_default_mime(const char *m)
+{
+	free(mimes.def);
+	if ((mimes.def = strdup(m)) == NULL)
+		fatal("strdup: %s", strerror(errno));
 }
 
 /* register mime for the given extension */
@@ -102,15 +116,15 @@ path_ext(const char *path)
 const char *
 mime(const char *path)
 {
-	const char *ext, *def = "application/octet-stream";
+	const char *ext;
 	struct etm *t;
 
 	if ((ext = path_ext(path)) == NULL)
-		return def;
+		return mimes.def;
 
 	for (t = mimes.t; t->mime != NULL; ++t)
 		if (!strcmp(ext, t->ext))
 			return t->mime;
 
-	return def;
+	return mimes.def;
 }

parse.y

@@ -42,8 +42,7 @@ extern void yyerror(const char*);
 	int		 num;
 }
 
-%token TBOOL TSTRING TNUM
-%token TDAEMON TIPV6 TPORT TPROTOCOLS TSERVER
+%token TDAEMON TIPV6 TPORT TPROTOCOLS TMIME TDEFAULT TTYPE TSERVER
 %token TCERT TKEY TROOT TCGI
 %token TERR
 
@@ -66,6 +65,8 @@ option		: TDAEMON TBOOL		{ conf.foreground = !$2; }
 			if (tls_config_parse_protocols(&conf.protos, $2) == -1)
 				errx(1, "invalid protocols string \"%s\"", $2);
 		}
+		| TMIME TSTRING TSTRING	{ add_mime($2, $3); }
+		| TDEFAULT TTYPE TSTRING { set_default_mime($3); }
 		;
 
 vhosts		: /* empty */

sample.conf

@@ -4,6 +4,9 @@ daemon on       # enable daemon mode
 # decomment to allow only TLSv1.3
 #protocols "tlsv1.3"
 
+# add the mapping for the extension rtf to the MIME application/rtf
+mime "application/rtf" "rtf"
+
 # server block example
 server "example.com" {
 	cert "/path/to/cert.pem"