Add #159: Support Brotli compression

[privoxy.git] / parsers.c

diff --git a/parsers.c b/parsers.c
index e48ae25..37a647c 100644 (file)
--- a/parsers.c
+++ b/parsers.c
@@ -4,8 +4,8 @@
  *
  * Purpose     :  Declares functions to parse/crunch headers and pages.
  *
- * Copyright   :  Written by and Copyright (C) 2001-2017 the
- *                Privoxy team. http://www.privoxy.org/
+ * Copyright   :  Written by and Copyright (C) 2001-2020 the
+ *                Privoxy team. https://www.privoxy.org/
  *
  *                Based on the Internet Junkbuster originally written
  *                by and Copyright (C) 1997 Anonymous Coders and
@@ -633,6 +633,7 @@ jb_err decompress_iob(struct client_state *csp)
       if (bufsize >= csp->config->buffer_limit)
       {
          log_error(LOG_LEVEL_ERROR, "Buffer limit reached while decompressing iob");
+         freez(buf);
          return JB_ERR_MEMORY;
       }
 
@@ -1185,7 +1186,7 @@ jb_err sed(struct client_state *csp, int filter_server_headers)
 }
 
 
-#ifdef FEATURE_HTTPS_FILTERING
+#ifdef FEATURE_HTTPS_INSPECTION
 /*********************************************************************
  *
  * Function    :  sed_https
@@ -1207,7 +1208,7 @@ jb_err sed_https(struct client_state *csp)
    struct list headers;
 
    /*
-    * Temporarly replace csp->headers with csp->https_headers
+    * Temporarily replace csp->headers with csp->https_headers
     * to trick sed() into filtering the https headers.
     */
    headers.first = csp->headers->first;
@@ -1215,14 +1216,33 @@ jb_err sed_https(struct client_state *csp)
    csp->headers->first = csp->https_headers->first;
    csp->headers->last  = csp->https_headers->last;
 
+   /*
+    * Start with fresh tags. Already existing tags may
+    * be set again. This is necessary to overrule
+    * URL-based patterns.
+    */
+   destroy_list(csp->tags);
+
+   /*
+    * We want client header filters and taggers
+    * so temporarily remove the flag.
+    */
+   csp->flags &= ~CSP_FLAG_CLIENT_HEADER_PARSING_DONE;
    err = sed(csp, FILTER_CLIENT_HEADERS);
+   csp->flags |= CSP_FLAG_CLIENT_HEADER_PARSING_DONE;
+
+   /*
+    * Update the last header which may have changed
+    * due to header additions,
+    */
+   csp->https_headers->last = csp->headers->last;
 
    csp->headers->first = headers.first;
    csp->headers->last  = headers.last;
 
    return err;
 }
-#endif /* def FEATURE_HTTPS_FILTERING */
+#endif /* def FEATURE_HTTPS_INSPECTION */
 
 
 /*********************************************************************
@@ -1938,7 +1958,7 @@ static jb_err client_connection(struct client_state *csp, char **header)
       if ((csp->config->feature_flags & RUNTIME_FEATURE_CONNECTION_SHARING)
         && !(csp->flags & CSP_FLAG_SERVER_SOCKET_TAINTED))
       {
-          if (!strcmpic(csp->http->ver, "HTTP/1.1"))
+          if (!strcmpic(csp->http->version, "HTTP/1.1"))
           {
              log_error(LOG_LEVEL_HEADER,
                 "Removing \'%s\' to imply keep-alive.", *header);
@@ -2439,7 +2459,7 @@ static jb_err server_content_encoding(struct client_state *csp, char **header)
  *
  * Description :  Remove the Content-Encoding header if the
  *                decompression was successful and the content
- *                has been modifed.
+ *                has been modified.
  *
  * Parameters  :
  *          1  :  csp = Current client state (buffers, headers, etc...)
@@ -3879,7 +3899,7 @@ static jb_err client_connection_header_adder(struct client_state *csp)
 #ifdef FEATURE_CONNECTION_KEEP_ALIVE
    if ((csp->config->feature_flags & RUNTIME_FEATURE_CONNECTION_KEEP_ALIVE)
       && !(csp->flags & CSP_FLAG_SERVER_SOCKET_TAINTED)
-      && !strcmpic(csp->http->ver, "HTTP/1.1"))
+      && !strcmpic(csp->http->version, "HTTP/1.1"))
    {
       csp->flags |= CSP_FLAG_CLIENT_CONNECTION_KEEP_ALIVE;
       return JB_ERR_OK;
@@ -4521,7 +4541,7 @@ jb_err get_destination_from_headers(const struct list *headers, struct http_requ
    string_append(&http->cmd, " ");
    string_append(&http->cmd, http->url);
    string_append(&http->cmd, " ");
-   string_append(&http->cmd, http->ver);
+   string_append(&http->cmd, http->version);
    if (http->cmd == NULL)
    {
       return JB_ERR_MEMORY;
@@ -4532,7 +4552,7 @@ jb_err get_destination_from_headers(const struct list *headers, struct http_requ
 }
 
 
-#ifdef FEATURE_HTTPS_FILTERING
+#ifdef FEATURE_HTTPS_INSPECTION
 /*********************************************************************
  *
  * Function    :  get_destination_from_https_headers
@@ -4602,7 +4622,7 @@ jb_err get_destination_from_https_headers(const struct list *headers, struct htt
    string_append(&http->cmd, " ");
    string_append(&http->cmd, http->url);
    string_append(&http->cmd, " ");
-   string_append(&http->cmd, http->ver);
+   string_append(&http->cmd, http->version);
    if (http->cmd == NULL)
    {
       return JB_ERR_MEMORY;
@@ -4611,7 +4631,7 @@ jb_err get_destination_from_https_headers(const struct list *headers, struct htt
    return JB_ERR_OK;
 
 }
-#endif /* def FEATURE_HTTPS_FILTERING */
+#endif /* def FEATURE_HTTPS_INSPECTION */
 
 
 /*********************************************************************