===================================================================
RCS file: /cvs/mandoc/cgi.c,v
retrieving revision 1.145
retrieving revision 1.149
diff -u -p -r1.145 -r1.149
--- mandoc/cgi.c	2017/01/25 02:14:43	1.145
+++ mandoc/cgi.c	2017/03/15 10:17:29	1.149
@@ -1,4 +1,4 @@
-/*	$Id: cgi.c,v 1.145 2017/01/25 02:14:43 schwarze Exp $ */
+/*	$Id: cgi.c,v 1.149 2017/03/15 10:17:29 schwarze Exp $ */
 /*
  * Copyright (c) 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze <schwarze@usta.de>
@@ -21,7 +21,9 @@
 #include <sys/time.h>
 
 #include <ctype.h>
+#if HAVE_ERR
 #include <err.h>
+#endif
 #include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
@@ -74,6 +76,7 @@ static	void		 pg_error_badrequest(const char *);
 static	void		 pg_error_internal(void);
 static	void		 pg_index(const struct req *);
 static	void		 pg_noresult(const struct req *, const char *);
+static	void		 pg_redirect(const struct req *, const char *);
 static	void		 pg_search(const struct req *);
 static	void		 pg_searchres(const struct req *,
 				struct manpage *, size_t);
@@ -113,7 +116,7 @@ static	const char *const sec_names[] = {
 static	const int sec_MAX = sizeof(sec_names) / sizeof(char *);
 
 static	const char *const arch_names[] = {
-    "amd64",       "alpha",       "armv7",
+    "amd64",       "alpha",       "armv7",	"arm64",
     "hppa",        "i386",        "landisk",
     "loongson",    "luna88k",     "macppc",      "mips64",
     "octeon",      "sgi",         "socppc",      "sparc64",
@@ -538,6 +541,23 @@ pg_error_internal(void)
 }
 
 static void
+pg_redirect(const struct req *req, const char *name)
+{
+	printf("Status: 303 See Other\r\n");
+	printf("Location: http://%s/", HTTP_HOST);
+	if (*scriptname != '\0')
+		printf("%s/", scriptname);
+	if (strcmp(req->q.manpath, req->p[0]))
+		printf("%s/", req->q.manpath);
+	if (req->q.arch != NULL)
+		printf("%s/", req->q.arch);
+	printf("%s", name);
+	if (req->q.sec != NULL)
+		printf(".%s", req->q.sec);
+	printf("\r\nContent-Type: text/html; charset=utf-8\r\n\r\n");
+}
+
+static void
 pg_searchres(const struct req *req, struct manpage *r, size_t sz)
 {
 	char		*arch, *archend;
@@ -954,9 +974,13 @@ pg_search(const struct req *req)
 		}
 	}
 
-	if (0 == mansearch(&search, &paths, argc, argv, &res, &ressz))
+	res = NULL;
+	ressz = 0;
+	if (req->isquery && req->q.equal && argc == 1)
+		pg_redirect(req, argv[0]);
+	else if (mansearch(&search, &paths, argc, argv, &res, &ressz) == 0)
 		pg_noresult(req, "You entered an invalid query.");
-	else if (0 == ressz)
+	else if (ressz == 0)
 		pg_noresult(req, "No results found.");
 	else
 		pg_searchres(req, res, ressz);
@@ -975,6 +999,22 @@ main(void)
 	const char	*path;
 	const char	*querystring;
 	int		 i;
+
+#if HAVE_PLEDGE
+	/*
+	 * The "rpath" pledge could be revoked after mparse_readfd()
+	 * if the file desciptor to "/footer.html" would be opened
+	 * up front, but it's probably not worth the complication
+	 * of the code it would cause: it would require scattering
+	 * pledge() calls in multiple low-level resp_*() functions.
+	 */
+
+	if (pledge("stdio rpath", NULL) == -1) {
+		warn("pledge");
+		pg_error_internal();
+		return EXIT_FAILURE;
+	}
+#endif
 
 	/* Poor man's ReDoS mitigation. */