Filter only content with mime types text/plain, text/html, application/* (to catch application/json)

mod_charset_lite.diff

--- mod_charset_lite.c.orig     2009-11-18 17:18:06.000000000 +0100
+++ mod_charset_lite.c	2013-01-14 13:11:45.017062580 +0100
@@ -239,9 +239,9 @@
     }
 
     /* catch proxy requests */
-    if (r->proxyreq) {
+    /*if (r->proxyreq) {
         return DECLINED;
-    }
+    }*/
 
     /* mod_rewrite indicators */
     if (r->filename
@@ -814,7 +814,10 @@
     if (!ctx->noop && ctx->xlate == NULL) {
         const char *mime_type = f->r->content_type ? f->r->content_type : ap_default_type(f->r);
 
-        if (strncasecmp(mime_type, "text/", 5) == 0 ||
+        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, f->r,
+                  "translating for %s", mime_type);
+
+        if ((strncasecmp(mime_type, "text/plain", 10) == 0 || strncasecmp(mime_type, "text/html", 9) == 0) ||
 #if APR_CHARSET_EBCDIC
         /* On an EBCDIC machine, be willing to translate mod_autoindex-
          * generated output.  Otherwise, it doesn't look too cool.
@@ -831,6 +834,7 @@
             strcmp(mime_type, DIR_MAGIC_TYPE) == 0 ||
 #endif
             strncasecmp(mime_type, "message/", 8) == 0 || 
+            (strncasecmp(mime_type, "application/", 12) == 0 && strncasecmp(mime_type, "application/javascript", 22) != 0)|| 
             dc->force_xlate == FX_FORCE) {
 
             rv = apr_xlate_open(&ctx->xlate,

Diff for httpd-2.2.15-15.el6.centos.src.rpm

Alters ./modules/filters/mod_charset_lite.c so that it would work with proxied traffic, and with application/* content type - specifically needed for application/json