BFD: make CLI consume only one line at a time

This makes it possible to add BFD commands to scripts executed via
`exec' CLI.

Change-Id: Id0ed6c09baee6f8ac9ff183d305a470f55a1f885
Signed-off-by: Klement Sekera <ksekera@cisco.com>

1 files changed, 78 insertions, 26 deletions

diff --git a/src/vnet/bfd/bfd_cli.c b/src/vnet/bfd/bfd_cli.c
index 0e73172b7cb..33492ca8500 100644
--- a/src/vnet/bfd/bfd_cli.c
+++ b/src/vnet/bfd/bfd_cli.c
@@ -121,8 +121,13 @@ show_bfd (vlib_main_t * vm, unformat_input_t * input,
 {
   bfd_main_t *bm = &bfd_main;
   bfd_session_t *bs = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
 
-  if (unformat (input, "keys"))
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  if (unformat (line_input, "keys"))
     {
       bfd_auth_key_t *key = NULL;
       u8 *s = format (NULL, "%=10s %=25s %=10s\n", "Configuration Key ID",
@@ -138,7 +143,7 @@ show_bfd (vlib_main_t * vm, unformat_input_t * input,
       vlib_cli_output (vm, "Number of configured BFD keys: %lu\n",
 		       (u64) pool_elts (bm->auth_keys));
     }
-  else if (unformat (input, "sessions"))
+  else if (unformat (line_input, "sessions"))
     {
       u8 *s = format (NULL, "%=10s %=32s %=20s %=20s\n", "Index", "Property",
 		      "Local value", "Remote value");
@@ -152,7 +157,7 @@ show_bfd (vlib_main_t * vm, unformat_input_t * input,
       vlib_cli_output (vm, "Number of configured BFD sessions: %lu\n",
 		       (u64) pool_elts (bm->sessions));
     }
-  else if (unformat (input, "echo-source"))
+  else if (unformat (line_input, "echo-source"))
     {
       int is_set;
       u32 sw_if_index;
@@ -239,16 +244,21 @@ bfd_cli_key_add (vlib_main_t * vm, unformat_input_t * input,
   u8 *vec_auth_type = NULL;
   bfd_auth_type_e auth_type = BFD_AUTH_TYPE_reserved;
   u8 *secret = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
   static const u8 keyed_sha1[] = "keyed-sha1";
   static const u8 meticulous_keyed_sha1[] = "meticulous-keyed-sha1";
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
-      if (unformat (input, "conf-key-id %u", &key_id))
+      if (unformat (line_input, "conf-key-id %u", &key_id))
 	{
 	  have_key_id = 1;
 	}
-      else if (unformat (input, "type %U", unformat_token, "a-zA-Z0-9-",
+      else if (unformat (line_input, "type %U", unformat_token, "a-zA-Z0-9-",
 			 &vec_auth_type))
 	{
 	  if (vec_len (vec_auth_type) == sizeof (keyed_sha1) - 1 &&
@@ -270,14 +280,15 @@ bfd_cli_key_add (vlib_main_t * vm, unformat_input_t * input,
 	      goto out;
 	    }
 	}
-      else if (unformat (input, "secret %U", unformat_hex_string, &secret))
+      else
+	if (unformat (line_input, "secret %U", unformat_hex_string, &secret))
 	{
 	  /* nothing to do here */
 	}
       else
 	{
 	  ret = clib_error_return (0, "Unknown input `%U'",
-				   format_unformat_error, input);
+				   format_unformat_error, line_input);
 	  goto out;
 	}
     }
@@ -330,13 +341,18 @@ bfd_cli_key_del (vlib_main_t * vm, unformat_input_t * input,
 {
   clib_error_t *ret = NULL;
   u32 key_id = 0;
+  unformat_input_t _line_input, *line_input = &_line_input;
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
-      if (!unformat (input, "conf-key-id %u", &key_id))
+      if (!unformat (line_input, "conf-key-id %u", &key_id))
 	{
 	  ret = clib_error_return (0, "Unknown input `%U'",
-				   format_unformat_error, input);
+				   format_unformat_error, line_input);
 	  goto out;
 	}
     }
@@ -380,7 +396,7 @@ static const unsigned optional = 0;
   t n;
 
 #define UNFORMAT(t, n, s, r, ...)              \
-  if (unformat (input, s " " __VA_ARGS__, &n)) \
+  if (unformat (line_input, s " " __VA_ARGS__, &n)) \
     {                                          \
       something_parsed = 1;                    \
       have_##n = 1;                            \
@@ -400,6 +416,7 @@ bfd_cli_udp_session_add (vlib_main_t * vm, unformat_input_t * input,
 			 CLIB_UNUSED (vlib_cli_command_t * lmd))
 {
   clib_error_t *ret = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
 #define foreach_bfd_cli_udp_session_add_cli_param(F)              \
   F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
      unformat_vnet_sw_interface, &vnet_main)                      \
@@ -415,7 +432,11 @@ bfd_cli_udp_session_add (vlib_main_t * vm, unformat_input_t * input,
 
   foreach_bfd_cli_udp_session_add_cli_param (DECLARE);
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       int something_parsed = 0;
       foreach_bfd_cli_udp_session_add_cli_param (UNFORMAT);
@@ -423,7 +444,7 @@ bfd_cli_udp_session_add (vlib_main_t * vm, unformat_input_t * input,
       if (!something_parsed)
 	{
 	  ret = clib_error_return (0, "Unknown input `%U'",
-				   format_unformat_error, input);
+				   format_unformat_error, line_input);
 	  goto out;
 	}
     }
@@ -493,6 +514,7 @@ bfd_cli_udp_session_mod (vlib_main_t * vm, unformat_input_t * input,
 			 CLIB_UNUSED (vlib_cli_command_t * lmd))
 {
   clib_error_t *ret = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
 #define foreach_bfd_cli_udp_session_mod_cli_param(F)              \
   F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
      unformat_vnet_sw_interface, &vnet_main)                      \
@@ -506,7 +528,11 @@ bfd_cli_udp_session_mod (vlib_main_t * vm, unformat_input_t * input,
 
   foreach_bfd_cli_udp_session_mod_cli_param (DECLARE);
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       int something_parsed = 0;
       foreach_bfd_cli_udp_session_mod_cli_param (UNFORMAT);
@@ -514,7 +540,7 @@ bfd_cli_udp_session_mod (vlib_main_t * vm, unformat_input_t * input,
       if (!something_parsed)
 	{
 	  ret = clib_error_return (0, "Unknown input `%U'",
-				   format_unformat_error, input);
+				   format_unformat_error, line_input);
 	  goto out;
 	}
     }
@@ -563,6 +589,7 @@ bfd_cli_udp_session_del (vlib_main_t * vm, unformat_input_t * input,
 			 CLIB_UNUSED (vlib_cli_command_t * lmd))
 {
   clib_error_t *ret = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
 #define foreach_bfd_cli_udp_session_del_cli_param(F)              \
   F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
      unformat_vnet_sw_interface, &vnet_main)                      \
@@ -573,7 +600,11 @@ bfd_cli_udp_session_del (vlib_main_t * vm, unformat_input_t * input,
 
   foreach_bfd_cli_udp_session_del_cli_param (DECLARE);
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       int something_parsed = 0;
       foreach_bfd_cli_udp_session_del_cli_param (UNFORMAT);
@@ -581,7 +612,7 @@ bfd_cli_udp_session_del (vlib_main_t * vm, unformat_input_t * input,
       if (!something_parsed)
 	{
 	  ret = clib_error_return (0, "Unknown input `%U'",
-				   format_unformat_error, input);
+				   format_unformat_error, line_input);
 	  goto out;
 	}
     }
@@ -619,6 +650,7 @@ bfd_cli_udp_session_set_flags (vlib_main_t * vm, unformat_input_t * input,
 			       CLIB_UNUSED (vlib_cli_command_t * lmd))
 {
   clib_error_t *ret = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
 #define foreach_bfd_cli_udp_session_set_flags_cli_param(F)        \
   F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
      unformat_vnet_sw_interface, &vnet_main)                      \
@@ -631,7 +663,11 @@ bfd_cli_udp_session_set_flags (vlib_main_t * vm, unformat_input_t * input,
 
   foreach_bfd_cli_udp_session_set_flags_cli_param (DECLARE);
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       int something_parsed = 0;
       foreach_bfd_cli_udp_session_set_flags_cli_param (UNFORMAT);
@@ -639,7 +675,7 @@ bfd_cli_udp_session_set_flags (vlib_main_t * vm, unformat_input_t * input,
       if (!something_parsed)
 	{
 	  ret = clib_error_return (0, "Unknown input `%U'",
-				   format_unformat_error, input);
+				   format_unformat_error, line_input);
 	  goto out;
 	}
     }
@@ -692,10 +728,12 @@ VLIB_CLI_COMMAND (bfd_cli_udp_session_set_flags_command, static) = {
 /* *INDENT-ON* */
 
 static clib_error_t *
-bfd_cli_udp_session_auth_activate (vlib_main_t * vm, unformat_input_t * input,
+bfd_cli_udp_session_auth_activate (vlib_main_t * vm,
+				   unformat_input_t * input,
 				   CLIB_UNUSED (vlib_cli_command_t * lmd))
 {
   clib_error_t *ret = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
 #define foreach_bfd_cli_udp_session_auth_activate_cli_param(F)    \
   F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
      unformat_vnet_sw_interface, &vnet_main)                      \
@@ -709,7 +747,11 @@ bfd_cli_udp_session_auth_activate (vlib_main_t * vm, unformat_input_t * input,
 
   foreach_bfd_cli_udp_session_auth_activate_cli_param (DECLARE);
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       int something_parsed = 0;
       foreach_bfd_cli_udp_session_auth_activate_cli_param (UNFORMAT);
@@ -717,7 +759,7 @@ bfd_cli_udp_session_auth_activate (vlib_main_t * vm, unformat_input_t * input,
       if (!something_parsed)
 	{
 	  ret = clib_error_return (0, "Unknown input `%U'",
-				   format_unformat_error, input);
+				   format_unformat_error, line_input);
 	  goto out;
 	}
     }
@@ -788,6 +830,7 @@ bfd_cli_udp_session_auth_deactivate (vlib_main_t *vm, unformat_input_t *input,
                                      CLIB_UNUSED (vlib_cli_command_t *lmd))
 {
   clib_error_t *ret = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
 #define foreach_bfd_cli_udp_session_auth_deactivate_cli_param(F)  \
   F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
      unformat_vnet_sw_interface, &vnet_main)                      \
@@ -799,7 +842,11 @@ bfd_cli_udp_session_auth_deactivate (vlib_main_t *vm, unformat_input_t *input,
 
   foreach_bfd_cli_udp_session_auth_deactivate_cli_param (DECLARE);
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       int something_parsed = 0;
       foreach_bfd_cli_udp_session_auth_deactivate_cli_param (UNFORMAT);
@@ -867,13 +914,18 @@ bfd_cli_udp_set_echo_source (vlib_main_t * vm, unformat_input_t * input,
 			     CLIB_UNUSED (vlib_cli_command_t * lmd))
 {
   clib_error_t *ret = NULL;
+  unformat_input_t _line_input, *line_input = &_line_input;
 #define foreach_bfd_cli_udp_set_echo_source_cli_param(F) \
   F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",   \
      unformat_vnet_sw_interface, &vnet_main)
 
   foreach_bfd_cli_udp_set_echo_source_cli_param (DECLARE);
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       int something_parsed = 0;
       foreach_bfd_cli_udp_set_echo_source_cli_param (UNFORMAT);
@@ -881,7 +933,7 @@ bfd_cli_udp_set_echo_source (vlib_main_t * vm, unformat_input_t * input,
       if (!something_parsed)
 	{
 	  ret = clib_error_return (0, "Unknown input `%U'",
-				   format_unformat_error, input);
+				   format_unformat_error, line_input);
 	  goto out;
 	}
     }