src/usr.bin/ssh/misc.c - diff

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-version 1.131, 2018/07/27 05:13:02
+version 1.132, 2018/10/03 06:38:35
 Line 1862
 Line 1862
 Line 1862
          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)
  {