pub struct HttpRequestMiddleware {
cookie: Option<Cookie>,
}
Expand description
HTTP [RequestMiddleware
] with compatibility workarounds.
This middleware makes the following changes to HTTP requests:
§Remove jsonrpc
field in JSON RPC 1.0
Removes “jsonrpc: 1.0” fields from requests, because the “jsonrpc” field was only added in JSON-RPC 2.0.
http://www.simple-is-better.org/rpc/#differences-between-1-0-and-2-0
§Add missing content-type
HTTP header
Some RPC clients don’t include a content-type
HTTP header.
But unlike web browsers, [jsonrpc_http_server
] does not do content sniffing.
If there is no content-type
header, we assume the content is JSON,
and let the parser error if we are incorrect.
§Authenticate incoming requests
If the cookie-based RPC authentication is enabled, check that the incoming request contains the authentication cookie.
This enables compatibility with zcash-cli
.
§Security
Any user-specified data in RPC requests is hex or base58check encoded. We assume lightwalletd validates data encodings before sending it on to Zebra. So any fixes Zebra performs won’t change user-specified data.
Fields§
Implementations§
source§impl HttpRequestMiddleware
impl HttpRequestMiddleware
sourcepub fn remove_json_1_fields(data: String) -> String
pub fn remove_json_1_fields(data: String) -> String
Remove any “jsonrpc: 1.0” fields in data
, and return the resulting string.
sourcepub fn insert_or_replace_content_type_header(headers: &mut HeaderMap)
pub fn insert_or_replace_content_type_header(headers: &mut HeaderMap)
Insert or replace client supplied content-type
HTTP header to application/json
in the following cases:
- no
content-type
supplied. - supplied
content-type
start withtext/plain
, for example:text/plain
text/plain;
text/plain; charset=utf-8
application/json
is the only content-type
accepted by the Zebra rpc endpoint:
§Security
content-type
headers exist so that applications know they are speaking the correct protocol with the correct format. We can be a bit flexible, but there are some types (such as binary) we shouldn’t allow. In particular, the “application/x-www-form-urlencoded” header should be rejected, so browser forms can’t be used to attack a local RPC port. See “The Role of Routers in the CSRF Attack” in https://www.invicti.com/blog/web-security/importance-content-type-header-http-requests/- Checking all the headers is secure, but only because hyper has custom code that just reads the first content-type header. https://github.com/hyperium/headers/blob/f01cc90cf8d601a716856bc9d29f47df92b779e4/src/common/content_type.rs#L102-L108
sourcepub fn check_credentials(&self, headers: &HeaderMap) -> bool
pub fn check_credentials(&self, headers: &HeaderMap) -> bool
Check if the request is authenticated.
Trait Implementations§
source§impl Clone for HttpRequestMiddleware
impl Clone for HttpRequestMiddleware
source§fn clone(&self) -> HttpRequestMiddleware
fn clone(&self) -> HttpRequestMiddleware
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for HttpRequestMiddleware
impl Debug for HttpRequestMiddleware
source§impl Default for HttpRequestMiddleware
impl Default for HttpRequestMiddleware
source§fn default() -> HttpRequestMiddleware
fn default() -> HttpRequestMiddleware
source§impl RequestMiddleware for HttpRequestMiddleware
impl RequestMiddleware for HttpRequestMiddleware
source§fn on_request(&self, request: Request<Body>) -> RequestMiddlewareAction
fn on_request(&self, request: Request<Body>) -> RequestMiddlewareAction
Auto Trait Implementations§
impl Freeze for HttpRequestMiddleware
impl RefUnwindSafe for HttpRequestMiddleware
impl Send for HttpRequestMiddleware
impl Sync for HttpRequestMiddleware
impl Unpin for HttpRequestMiddleware
impl UnwindSafe for HttpRequestMiddleware
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only in debug builds, and is erased in release
builds.§fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
.tap_ref()
only in debug builds, and is erased in release
builds.§fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
.tap_ref_mut()
only in debug builds, and is erased in release
builds.§fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
.tap_deref()
only in debug builds, and is erased in release
builds.