1 files changed, 27 insertions, 4 deletions

diff --git a/misc.c b/misc.c
index 2f3dbda0c..5159e6692 100644
--- a/misc.c
+++ b/misc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: misc.c,v 1.131 2018/07/27 05:13:02 dtucker Exp $ */
+/* $OpenBSD: misc.c,v 1.133 2018/10/05 14:26:09 naddy Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
  * Copyright (c) 2005,2006 Damien Miller.  All rights reserved.
@@ -50,6 +50,7 @@
 #include <netinet/in_systm.h>
 #include <netinet/ip.h>
 #include <netinet/tcp.h>
+#include <arpa/inet.h>
 
 #include <ctype.h>
 #include <errno.h>
@@ -333,13 +334,16 @@ pwcopy(struct passwd *pw)
 int
 a2port(const char *s)
 {
+        struct servent *se;
         long long port;
         const char *errstr;
 
         port = strtonum(s, 0, 65535, &errstr);
-        if (errstr != NULL)
-                return -1;
-        return (int)port;
+        if (errstr == NULL)
+                return (int)port;
+        if ((se = getservbyname(s, "tcp")) != NULL)
+                return ntohs(se->s_port);
+        return -1;
 }
 
 int
@@ -1996,6 +2000,25 @@ bad:
         return 0;
 }
 
+/*
+ * Verify that a environment variable name (not including initial '$') is
+ * valid; consisting of one or more alphanumeric or underscore characters only.
+ * Returns 1 on valid, 0 otherwise.
+ */
+int
+valid_env_name(const char *name)
+{
+        const char *cp;
+
+        if (name[0] == '\0')
+                return 0;
+        for (cp = name; *cp != '\0'; cp++) {
+                if (!isalnum((u_char)*cp) && *cp != '_')
+                        return 0;
+        }
+        return 1;
+}
+
 const char *
 atoi_err(const char *nptr, int *val)
 {