Fix EOF check in kadm5.acl line processing

On platforms where the char type is unsigned, the check for EOF (which
is negative) will always fail, leaving a 255 byte at the end of the
line.  This can cause a syntax error, in turn causing the contents of
kadm5.acl to be ignored.  Fix this bug by removing the cast on EOF.

[ghudson@mit.edu: more precisely describe consequences of bug in
commit message]

(cherry picked from commit 8fd85a77789496b8d7f8092f6e8a2824bc09a6cf)

ticket: 8346
version_fixed: 1.13.4
tags: -pullup
status: resolved

diff --git a/src/lib/kadm5/srv/server_acl.c b/src/lib/kadm5/srv/server_acl.c
index 64f738540893aa70224c730908fdab9a3ffded1f..719f6dea9c5ead32f20102034527404212f305eb 100644 (file)
--- a/src/lib/kadm5/srv/server_acl.c
+++ b/src/lib/kadm5/srv/server_acl.c
@@ -115,7 +115,7 @@ kadm5int_acl_get_line(fp, lnp)
             int byte;
             byte = fgetc(fp);
             acl_buf[i] = byte;
-            if (byte == (char)EOF) {
+            if (byte == EOF) {
                 if (i > 0 && acl_buf[i-1] == '\\')
                     i--;
                 break;          /* it gets nulled-out below */