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authorBilly McFall <bmcfall@redhat.com>2017-02-15 11:39:12 -0500
committerDave Barach <openvpp@barachs.net>2017-02-22 16:23:12 +0000
commita9a20e7f69f4a91a4d5267ab5ce14125bdc7d6c6 (patch)
tree58647f28d51d1cac3e7aa4e9ca94280192e6ec25 /src/vnet/lisp-cp/lisp_cli.c
parent2291a36008e197423a0f0414f6dcca4afa3ac4c1 (diff)
VPP-635: CLI Memory leak with invalid parameter
In the CLI parsing, below is a common pattern: /* 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 (line_input, "x")) x = 1; : else return clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); } unformat_free (line_input); The 'else' returns if an unknown string is encountered. There a memory leak because the 'unformat_free(line_input)' is not called. There is a large number of instances of this pattern. Replaced the previous pattern with: /* 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 (line_input, "x")) x = 1; : else { error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); goto done: } } /* ...Remaining code... */ done: unformat_free (line_input); return error; } In multiple files, 'unformat_free (line_input);' was never called, so there was a memory leak whether an invalid string was entered or not. Also, there were multiple instance where: error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); used 'input' as the last parameter instead of 'line_input'. The result is that output did not contain the substring in error, instead just an empty string. Fixed all of those as well. There are a lot of file, and very mind numbing work, so tried to keep it to a pattern to avoid mistakes. Change-Id: I8902f0c32a47dd7fb3bb3471a89818571702f1d2 Signed-off-by: Billy McFall <bmcfall@redhat.com> Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vnet/lisp-cp/lisp_cli.c')
-rw-r--r--src/vnet/lisp-cp/lisp_cli.c139
1 files changed, 104 insertions, 35 deletions
diff --git a/src/vnet/lisp-cp/lisp_cli.c b/src/vnet/lisp-cp/lisp_cli.c
index 25d11c6127e..05df9fb6d2a 100644
--- a/src/vnet/lisp-cp/lisp_cli.c
+++ b/src/vnet/lisp-cp/lisp_cli.c
@@ -25,6 +25,7 @@ lisp_show_adjacencies_command_fn (vlib_main_t * vm,
vlib_cli_output (vm, "%s %40s\n", "leid", "reid");
unformat_input_t _line_input, *line_input = &_line_input;
u32 vni = ~0;
+ clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
@@ -38,14 +39,14 @@ lisp_show_adjacencies_command_fn (vlib_main_t * vm,
{
vlib_cli_output (vm, "parse error: '%U'",
format_unformat_error, line_input);
- return 0;
+ goto done;
}
}
if (~0 == vni)
{
vlib_cli_output (vm, "error: no vni specified!");
- return 0;
+ goto done;
}
adjs = vnet_lisp_adjacencies_get_by_vni (vni);
@@ -57,7 +58,10 @@ lisp_show_adjacencies_command_fn (vlib_main_t * vm,
}
vec_free (adjs);
- return 0;
+done:
+ unformat_free (line_input);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -77,6 +81,7 @@ lisp_add_del_map_server_command_fn (vlib_main_t * vm,
u8 is_add = 1, ip_set = 0;
ip_address_t ip;
unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
@@ -94,14 +99,14 @@ lisp_add_del_map_server_command_fn (vlib_main_t * vm,
{
vlib_cli_output (vm, "parse error: '%U'",
format_unformat_error, line_input);
- return 0;
+ goto done;
}
}
if (!ip_set)
{
vlib_cli_output (vm, "map-server ip address not set!");
- return 0;
+ goto done;
}
rv = vnet_lisp_add_del_map_server (&ip, is_add);
@@ -109,7 +114,10 @@ lisp_add_del_map_server_command_fn (vlib_main_t * vm,
vlib_cli_output (vm, "failed to %s map-server!",
is_add ? "add" : "delete");
- return 0;
+done:
+ unformat_free (line_input);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -191,7 +199,7 @@ lisp_add_del_local_eid_command_fn (vlib_main_t * vm, unformat_input_t * input,
if (key && (0 == key_id))
{
vlib_cli_output (vm, "invalid key_id!");
- return 0;
+ goto done;;
}
gid_address_copy (&a->eid, &eid);
@@ -213,6 +221,8 @@ done:
vec_free (locator_set_name);
gid_address_free (&a->eid);
vec_free (a->key);
+ unformat_free (line_input);
+
return error;
}
@@ -233,6 +243,7 @@ lisp_eid_table_map_command_fn (vlib_main_t * vm,
u8 is_add = 1, is_l2 = 0;
u32 vni = 0, dp_id = 0;
unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
@@ -250,11 +261,16 @@ lisp_eid_table_map_command_fn (vlib_main_t * vm,
is_l2 = 1;
else
{
- return unformat_parse_error (line_input);
+ error = unformat_parse_error (line_input);
+ goto done;
}
}
vnet_lisp_eid_table_map (vni, dp_id, is_l2, is_add);
- return 0;
+
+done:
+ unformat_free (line_input);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -479,7 +495,7 @@ lisp_add_del_adjacency_command_fn (vlib_main_t * vm, unformat_input_t * input,
!= ip_prefix_version (leid_ippref)))
{
clib_warning ("remote and local EIDs are of different types!");
- return error;
+ goto done;
}
memset (a, 0, sizeof (a[0]));
@@ -512,6 +528,7 @@ lisp_map_request_mode_command_fn (vlib_main_t * vm,
{
unformat_input_t _i, *i = &_i;
map_request_mode_t mr_mode = _MR_MODE_MAX;
+ clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, i))
@@ -533,12 +550,15 @@ lisp_map_request_mode_command_fn (vlib_main_t * vm,
if (_MR_MODE_MAX == mr_mode)
{
clib_warning ("No LISP map request mode entered!");
- return 0;
+ goto done;
}
vnet_lisp_set_map_request_mode (mr_mode);
+
done:
- return 0;
+ unformat_free (i);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -630,7 +650,10 @@ lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm,
else if (unformat (line_input, "disable"))
is_add = 0;
else
- return clib_error_return (0, "parse error");
+ {
+ error = clib_error_return (0, "parse error");
+ goto done;
+ }
}
if (!locator_name_set)
@@ -648,6 +671,8 @@ lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm,
done:
if (locator_set_name)
vec_free (locator_set_name);
+ unformat_free (line_input);
+
return error;
}
@@ -771,6 +796,7 @@ lisp_show_eid_table_command_fn (vlib_main_t * vm,
gid_address_t eid;
u8 print_all = 1;
u8 filter = 0;
+ clib_error_t *error = NULL;
memset (&eid, 0, sizeof (eid));
@@ -787,8 +813,11 @@ lisp_show_eid_table_command_fn (vlib_main_t * vm,
else if (unformat (line_input, "remote"))
filter = 2;
else
- return clib_error_return (0, "parse error: '%U'",
- format_unformat_error, line_input);
+ {
+ error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
}
vlib_cli_output (vm, "%-35s%-20s%-30s%-20s%-s",
@@ -818,7 +847,7 @@ lisp_show_eid_table_command_fn (vlib_main_t * vm,
{
mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &eid);
if ((u32) ~ 0 == mi)
- return 0;
+ goto done;
mapit = pool_elt_at_index (lcm->mapping_pool, mi);
locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
@@ -827,14 +856,17 @@ lisp_show_eid_table_command_fn (vlib_main_t * vm,
if (filter && !((1 == filter && ls->local) ||
(2 == filter && !ls->local)))
{
- return 0;
+ goto done;
}
vlib_cli_output (vm, "%U,", format_eid_entry, lcm->vnet_main,
lcm, mapit, ls);
}
- return 0;
+done:
+ unformat_free (line_input);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -853,6 +885,7 @@ lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input,
unformat_input_t _line_input, *line_input = &_line_input;
u8 is_enabled = 0;
u8 is_set = 0;
+ clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
@@ -869,16 +902,24 @@ lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input,
is_set = 1;
else
{
- return clib_error_return (0, "parse error: '%U'",
- format_unformat_error, line_input);
+ error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ goto done;
}
}
if (!is_set)
- return clib_error_return (0, "state not set");
+ {
+ error = clib_error_return (0, "state not set");
+ goto done;
+ }
vnet_lisp_enable_disable (is_enabled);
- return 0;
+
+done:
+ unformat_free (line_input);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -897,6 +938,7 @@ lisp_map_register_enable_disable_command_fn (vlib_main_t * vm,
unformat_input_t _line_input, *line_input = &_line_input;
u8 is_enabled = 0;
u8 is_set = 0;
+ clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
@@ -915,18 +957,22 @@ lisp_map_register_enable_disable_command_fn (vlib_main_t * vm,
{
vlib_cli_output (vm, "parse error: '%U'", format_unformat_error,
line_input);
- return 0;
+ goto done;
}
}
if (!is_set)
{
vlib_cli_output (vm, "state not set!");
- return 0;
+ goto done;
}
vnet_lisp_map_register_enable_disable (is_enabled);
- return 0;
+
+done:
+ unformat_free (line_input);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -945,6 +991,7 @@ lisp_rloc_probe_enable_disable_command_fn (vlib_main_t * vm,
unformat_input_t _line_input, *line_input = &_line_input;
u8 is_enabled = 0;
u8 is_set = 0;
+ clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
@@ -963,18 +1010,22 @@ lisp_rloc_probe_enable_disable_command_fn (vlib_main_t * vm,
{
vlib_cli_output (vm, "parse error: '%U'", format_unformat_error,
line_input);
- return 0;
+ goto done;
}
}
if (!is_set)
{
vlib_cli_output (vm, "state not set!");
- return 0;
+ goto done;
}
vnet_lisp_rloc_probe_enable_disable (is_enabled);
- return 0;
+
+done:
+ unformat_free (line_input);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -1022,6 +1073,7 @@ lisp_show_eid_table_map_command_fn (vlib_main_t * vm,
lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
uword *vni_table = 0;
u8 is_l2 = 0;
+ clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
@@ -1040,14 +1092,17 @@ lisp_show_eid_table_map_command_fn (vlib_main_t * vm,
is_l2 = 0;
}
else
- return clib_error_return (0, "parse error: '%U'",
- format_unformat_error, line_input);
+ {
+ error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
}
if (!vni_table)
{
vlib_cli_output (vm, "Error: expected l2|l3 param!\n");
- return 0;
+ goto done;
}
vlib_cli_output (vm, "%=10s%=10s", "VNI", is_l2 ? "BD" : "VRF");
@@ -1059,7 +1114,10 @@ lisp_show_eid_table_map_command_fn (vlib_main_t * vm,
}));
/* *INDENT-ON* */
- return 0;
+done:
+ unformat_free (line_input);
+
+ return error;
}
/* *INDENT-OFF* */
@@ -1131,6 +1189,8 @@ done:
vec_free (locators);
if (locator_set_name)
vec_free (locator_set_name);
+ unformat_free (line_input);
+
return error;
}
@@ -1205,6 +1265,8 @@ lisp_add_del_locator_in_set_command_fn (vlib_main_t * vm,
done:
vec_free (locators);
vec_free (locator_set_name);
+ unformat_free (line_input);
+
return error;
}
@@ -1322,6 +1384,8 @@ lisp_add_del_map_resolver_command_fn (vlib_main_t * vm,
}
done:
+ unformat_free (line_input);
+
return error;
}
@@ -1372,11 +1436,11 @@ lisp_add_del_mreq_itr_rlocs_command_fn (vlib_main_t * vm,
is_add ? "add" : "delete");
}
+done:
vec_free (locator_set_name);
+ unformat_free (line_input);
-done:
return error;
-
}
/* *INDENT-OFF* */
@@ -1438,7 +1502,10 @@ lisp_use_petr_set_locator_set_command_fn (vlib_main_t * vm,
else if (unformat (line_input, "disable"))
is_add = 0;
else
- return clib_error_return (0, "parse error");
+ {
+ error = clib_error_return (0, "parse error");
+ goto done;
+ }
}
if (!ip_set)
@@ -1454,6 +1521,8 @@ lisp_use_petr_set_locator_set_command_fn (vlib_main_t * vm,
}
done:
+ unformat_free (line_input);
+
return error;
}