Change target prefix mapping argument order

Put the chost-specification at the end and make it optional. This makes
more sense than having to give an arbitrary useless name in case you
weren't using virtual hosts in the first place.

While at it, clear up the wording in the manpage.

Signed-off-by: Laslo Hunhold <[email protected]>

Author: FRIGN

http.c

@@ -394,8 +394,10 @@ http_send_response(int fd, struct request *r)
 	for (i = 0; i < s.map_len; i++) {
 		len = strlen(s.map[i].from);
 		if (!strncmp(realtarget, s.map[i].from, len)) {
-			/* match canonical host if vhosts are enabled */
-			if (s.vhost && strcmp(s.map[i].chost, vhostmatch)) {
+			/* match canonical host if vhosts are enabled and
+			 * the mapping specifies a canonical host */
+			if (s.vhost && s.map[i].chost &&
+			    strcmp(s.map[i].chost, vhostmatch)) {
 				continue;
 			}
 

main.c

@@ -155,10 +155,12 @@ main(int argc, char *argv[])
 		                           sizeof(struct map)))) {
 			die("reallocarray:");
 		}
-		if (!(s.map[s.map_len - 1].chost = strtok(tok,  " ")) ||
-		    !(s.map[s.map_len - 1].from  = strtok(NULL, " ")) ||
-		    !(s.map[s.map_len - 1].to    = strtok(NULL, " ")) ||
-		    strtok(NULL, "")) {
+		if (!(s.map[s.map_len - 1].from  = strtok(tok,  " ")) ||
+		    !(s.map[s.map_len - 1].to    = strtok(NULL, " "))) {
+			usage();
+		}
+		s.map[s.map_len - 1].chost = strtok(NULL, " ");
+		if (strtok(NULL, "")) {
 			usage();
 		}
 		break;

quark.1

@@ -1,4 +1,4 @@
-.Dd 2019-02-18
+.Dd 2019-02-24
 .Dt QUARK 1
 .Os suckless.org
 .Sh NAME
@@ -57,16 +57,15 @@ Enable directory listing.
 Add the target prefix mapping rule specified by
 .Ar map ,
 which has the form
-.Qq Pa chost from to ,
+.Qq Pa from to [chost] ,
 where each element is separated with whitespace.
 .Pp
 The prefix
 .Pa from
-of all matching targets, especially only of those requests for the canonical
-virtual host
-.Pa chost
-when virtual hosts are specified, is then replaced with
-.Pa to .
+of all matching targets is replaced with
+.Pa to ,
+optionally limited to the canonical virtual host
+.Pa chost .
 If no virtual hosts are given,
 .Pa chost
 is ignored.