From 074a33046a0e85bf563c0f2f84bb8a4d3e748a74 Mon Sep 17 00:00:00 2001
From: Brainedia <187246+robertsass@users.noreply.github.com>
Date: Fri, 3 May 2019 16:53:14 +0200
Subject: [PATCH 1/3] Added Flag "XSendFileUnsetContentEncoding"

Based on the idea of ailmanki https://forums.freebsd.org/threads/port-mod_xsendfile.57330/
---
 mod_xsendfile.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/mod_xsendfile.c b/mod_xsendfile.c
index 863ed26..56f5196 100644
--- a/mod_xsendfile.c
+++ b/mod_xsendfile.c
@@ -149,6 +149,9 @@ static const char *xsendfile_cmd_flag(cmd_parms *cmd, void *perdir_confv,
   else if (!strcasecmp(cmd->cmd->name, "xsendfileunescape")) {
     conf->unescape = flag ? XSENDFILE_ENABLED: XSENDFILE_DISABLED;
   }
+  else if (!strcasecmp(cmd->cmd->name, "xsendfileunsetcontentencoding")) {
+    conf->unsetCE = flag ? XSENDFILE_ENABLED: XSENDFILE_DISABLED;
+  }
   else {
     return apr_psprintf(
       cmd->pool,
@@ -395,8 +398,10 @@ static apr_status_t ap_xsendfile_output_filter(ap_filter_t *f, apr_bucket_brigad
   /* as we dropped all the content this field is not valid anymore! */
   apr_table_unset(r->headers_out, "Content-Length");
   apr_table_unset(r->err_headers_out, "Content-Length");
-  apr_table_unset(r->headers_out, "Content-Encoding");
-  apr_table_unset(r->err_headers_out, "Content-Encoding");
+  if (conf->unsetCE != XSENDFILE_DISABLED) {
+    apr_table_unset(r->headers_out, "Content-Encoding");
+    apr_table_unset(r->err_headers_out, "Content-Encoding");
+  }
 
   /* Decode header
      lighttpd does the same for X-Sendfile2, so we're compatible here
@@ -676,6 +681,13 @@ static const command_rec xsendfile_command_table[] = {
     OR_FILEINFO,
     "On|Off - Unescape/url-decode the value of the header (default: On)"
     ),
+  AP_INIT_FLAG(
+    "XSendFileUnsetContentEncoding",
+    xsendfile_cmd_flag,
+    NULL,
+    OR_FILEINFO,
+    "On|Off - Unsets the Content-Encoding header (default: On)"
+    ),
   AP_INIT_TAKE12(
     "XSendFilePath",
     xsendfile_cmd_path,

From 9aff806524a69f8a8c71060a3038794d5313ba7b Mon Sep 17 00:00:00 2001
From: Brainedia <187246+robertsass@users.noreply.github.com>
Date: Fri, 3 May 2019 17:10:57 +0200
Subject: [PATCH 2/3] Added flag "XSendFileUnsetContentEncoding"

Based on the idea of ailmanki https://forums.freebsd.org/threads/port-mod_xsendfile.57330/
---
 mod_xsendfile.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mod_xsendfile.c b/mod_xsendfile.c
index 56f5196..a0fbc52 100644
--- a/mod_xsendfile.c
+++ b/mod_xsendfile.c
@@ -72,6 +72,7 @@ typedef struct xsendfile_conf_t {
   xsendfile_conf_active_t ignoreETag;
   xsendfile_conf_active_t ignoreLM;
   xsendfile_conf_active_t unescape;
+  xsendfile_conf_active_t unsetCE;
   apr_array_header_t *paths;
   apr_array_header_t *temporaryPaths;
 } xsendfile_conf_t;
@@ -86,9 +87,10 @@ static xsendfile_conf_t *xsendfile_config_create(apr_pool_t *p) {
   xsendfile_conf_t *conf;
 
   conf = (xsendfile_conf_t *) apr_pcalloc(p, sizeof(xsendfile_conf_t));
-  conf->unescape =
+    conf->unescape =
     conf->ignoreETag =
     conf->ignoreLM =
+    conf->unsetCE =
     conf->enabled =
     XSENDFILE_UNSET;
 
@@ -114,6 +116,7 @@ static void *xsendfile_config_merge(apr_pool_t *p, void *basev, void *overridesv
   XSENDFILE_CFLAG(ignoreETag);
   XSENDFILE_CFLAG(ignoreLM);
   XSENDFILE_CFLAG(unescape);
+  XSENDFILE_CFLAG(unsetCE);
 
   conf->paths = apr_array_append(p, overrides->paths, base->paths);
 

From c859709c2dfa997f7623e8ca43dacea305dc6cb7 Mon Sep 17 00:00:00 2001
From: Brainedia <187246+robertsass@users.noreply.github.com>
Date: Fri, 3 May 2019 17:14:29 +0200
Subject: [PATCH 3/3] Added flag "XSendFileUnsetContentEncoding"

To supress unsetting of the Content-Encoding header - e.g. if you want to deliver files that are gzip compressed.
Based on the idea of ailmanki https://forums.freebsd.org/threads/port-mod_xsendfile.57330/
---
 mod_xsendfile.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mod_xsendfile.c b/mod_xsendfile.c
index a0fbc52..a1418f4 100644
--- a/mod_xsendfile.c
+++ b/mod_xsendfile.c
@@ -17,6 +17,7 @@
  *   Nils Maier <testnutzer123@gmail.com>
  *   Ben Timby - URL decoding
  *   Jake Rhee - X-SENDFILE-TEMPORARY
+ *   Robert Saß <rs@brainedia.de> - XSendFileUnsetContentEncoding
  ****/
 
 /****