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Implemented "return" action.

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The "return" action can be used to immediately generate a simple HTTP response
with an arbitrary status:

  {
      "action": {
          "return": 404
      }
  }

This is especially useful for denying access to specific resources.
This commit is contained in:
Valentin Bartenev
2020-03-27 17:22:52 +03:00
parent 5f9c4754cb
commit 8d727774e3
5 changed files with 96 additions and 4 deletions
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38
src/nxt_conf_validation.c
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@@ -64,6 +64,8 @@ static nxt_int_t nxt_conf_vldt_action(nxt_conf_validation_t *vldt,
nxt_conf_value_t *value, void *data);
static nxt_int_t nxt_conf_vldt_pass(nxt_conf_validation_t *vldt,
nxt_conf_value_t *value, void *data);
static nxt_int_t nxt_conf_vldt_return(nxt_conf_validation_t *vldt,
nxt_conf_value_t *value, void *data);
static nxt_int_t nxt_conf_vldt_proxy(nxt_conf_validation_t *vldt,
nxt_conf_value_t *value, void *data);
static nxt_int_t nxt_conf_vldt_routes(nxt_conf_validation_t *vldt,
@@ -354,6 +356,16 @@ static nxt_conf_vldt_object_t nxt_conf_vldt_pass_action_members[] = {
};
static nxt_conf_vldt_object_t nxt_conf_vldt_return_action_members[] = {
{ nxt_string("return"),
NXT_CONF_VLDT_INTEGER,
&nxt_conf_vldt_return,
NULL },
NXT_CONF_VLDT_END
};
static nxt_conf_vldt_object_t nxt_conf_vldt_share_action_members[] = {
{ nxt_string("share"),
NXT_CONF_VLDT_STRING,
@@ -978,6 +990,7 @@ nxt_conf_vldt_action(nxt_conf_validation_t *vldt, nxt_conf_value_t *value,
} actions[] = {
{ nxt_string("pass"), nxt_conf_vldt_pass_action_members },
{ nxt_string("return"), nxt_conf_vldt_return_action_members },
{ nxt_string("share"), nxt_conf_vldt_share_action_members },
{ nxt_string("proxy"), nxt_conf_vldt_proxy_action_members },
};
@@ -993,8 +1006,8 @@ nxt_conf_vldt_action(nxt_conf_validation_t *vldt, nxt_conf_value_t *value,
if (members != NULL) {
return nxt_conf_vldt_error(vldt, "The \"action\" object must have "
"just one of \"pass\", \"share\" or "
"\"proxy\" options set.");
"just one of \"pass\", \"return\", "
"\"share\", or \"proxy\" options set.");
}
members = actions[i].members;
@@ -1002,8 +1015,8 @@ nxt_conf_vldt_action(nxt_conf_validation_t *vldt, nxt_conf_value_t *value,
if (members == NULL) {
return nxt_conf_vldt_error(vldt, "The \"action\" object must have "
"either \"pass\", \"share\", or "
"\"proxy\" option set.");
"either \"pass\", \"return\", \"share\", "
"or \"proxy\" option set.");
}
return nxt_conf_vldt_object(vldt, value, members);
@@ -1114,6 +1127,23 @@ error:
}
static nxt_int_t
nxt_conf_vldt_return(nxt_conf_validation_t *vldt, nxt_conf_value_t *value,
void *data)
{
int64_t status;
status = nxt_conf_get_integer(value);
if (status < NXT_HTTP_INVALID || status > NXT_HTTP_STATUS_MAX) {
return nxt_conf_vldt_error(vldt, "The \"return\" value is out of "
"allowed HTTP status code range 0-999.");
}
return NXT_OK;
}
static nxt_int_t
nxt_conf_vldt_proxy(nxt_conf_validation_t *vldt, nxt_conf_value_t *value,
void *data)