1 files changed, 85 insertions, 0 deletions
diff --git a/src/include/libpq/protocol.h b/src/include/libpq/protocol.h
new file mode 100644
index 00000000000..cc46f4b586a
--- /dev/null
+++ b/src/include/libpq/protocol.h
@@ -0,0 +1,85 @@
+/*-------------------------------------------------------------------------
+ *
+ * protocol.h
+ *		Definitions of the request/response codes for the wire protocol.
+ *
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/protocol.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PROTOCOL_H
+#define PROTOCOL_H
+
+/* These are the request codes sent by the frontend. */
+
+#define PqMsg_Bind					'B'
+#define PqMsg_Close					'C'
+#define PqMsg_Describe				'D'
+#define PqMsg_Execute				'E'
+#define PqMsg_FunctionCall			'F'
+#define PqMsg_Flush					'H'
+#define PqMsg_Parse					'P'
+#define PqMsg_Query					'Q'
+#define PqMsg_Sync					'S'
+#define PqMsg_Terminate				'X'
+#define PqMsg_CopyFail				'f'
+#define PqMsg_GSSResponse			'p'
+#define PqMsg_PasswordMessage		'p'
+#define PqMsg_SASLInitialResponse	'p'
+#define PqMsg_SASLResponse			'p'
+
+
+/* These are the response codes sent by the backend. */
+
+#define PqMsg_ParseComplete			'1'
+#define PqMsg_BindComplete			'2'
+#define PqMsg_CloseComplete			'3'
+#define PqMsg_NotificationResponse	'A'
+#define PqMsg_CommandComplete		'C'
+#define PqMsg_DataRow				'D'
+#define PqMsg_ErrorResponse			'E'
+#define PqMsg_CopyInResponse		'G'
+#define PqMsg_CopyOutResponse		'H'
+#define PqMsg_EmptyQueryResponse	'I'
+#define PqMsg_BackendKeyData		'K'
+#define PqMsg_NoticeResponse		'N'
+#define PqMsg_AuthenticationRequest 'R'
+#define PqMsg_ParameterStatus		'S'
+#define PqMsg_RowDescription		'T'
+#define PqMsg_FunctionCallResponse	'V'
+#define PqMsg_CopyBothResponse		'W'
+#define PqMsg_ReadyForQuery			'Z'
+#define PqMsg_NoData				'n'
+#define PqMsg_PortalSuspended		's'
+#define PqMsg_ParameterDescription	't'
+#define PqMsg_NegotiateProtocolVersion 'v'
+
+
+/* These are the codes sent by both the frontend and backend. */
+
+#define PqMsg_CopyDone				'c'
+#define PqMsg_CopyData				'd'
+
+
+/* These are the authentication request codes sent by the backend. */
+
+#define AUTH_REQ_OK			0	/* User is authenticated  */
+#define AUTH_REQ_KRB4		1	/* Kerberos V4. Not supported any more. */
+#define AUTH_REQ_KRB5		2	/* Kerberos V5. Not supported any more. */
+#define AUTH_REQ_PASSWORD	3	/* Password */
+#define AUTH_REQ_CRYPT		4	/* crypt password. Not supported any more. */
+#define AUTH_REQ_MD5		5	/* md5 password */
+/* 6 is available.  It was used for SCM creds, not supported any more. */
+#define AUTH_REQ_GSS		7	/* GSSAPI without wrap() */
+#define AUTH_REQ_GSS_CONT	8	/* Continue GSS exchanges */
+#define AUTH_REQ_SSPI		9	/* SSPI negotiate without wrap() */
+#define AUTH_REQ_SASL	   10	/* Begin SASL authentication */
+#define AUTH_REQ_SASL_CONT 11	/* Continue SASL authentication */
+#define AUTH_REQ_SASL_FIN  12	/* Final SASL message */
+#define AUTH_REQ_MAX	   AUTH_REQ_SASL_FIN	/* maximum AUTH_REQ_* value */
+
+#endif							/* PROTOCOL_H */