socks: Send back extended error code if set

This commit defines the new extended error codes. It also flags the socks
request object that it can use them.

Part of #30382

Signed-off-by: David Goulet <dgoulet@torproject.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/core/or/socks_request_st.h b/src/core/or/socks_request_st.h
index 9fb941ff7e..0f9898524d 100644
--- a/src/core/or/socks_request_st.h
+++ b/src/core/or/socks_request_st.h
@@ -7,6 +7,8 @@
 #ifndef SOCKS_REQUEST_ST_H
 #define SOCKS_REQUEST_ST_H
 
+#include "lib/net/socks5_status.h"
+
 #define MAX_SOCKS_REPLY_LEN 1024
 
 #define SOCKS_NO_AUTH 0x00
@@ -58,6 +60,11 @@ struct socks_request_t {
    * "username/password" authentication if both are offered. Used as input to
    * parse_socks. */
   unsigned int socks_prefer_no_auth : 1;
+  /** If set, we can send back the extended error code in the reply. */
+  unsigned int socks_use_extended_errors : 1;
+  /** If non zero, this contains the extended error code that should be used
+   * if the port was configured to use them. */
+  socks5_reply_status_t socks_extended_error_code;
 
   /** Number of bytes in username; 0 if username is NULL */
   size_t usernamelen;