This commit upgrades go-ipfs-cmds and configures the commands HTTP API Handler
to only allow POST/OPTIONS, disallowing GET and others in the handling of
command requests in the IPFS HTTP API (where before every type of request
method was handled, with GET/POST/PUT/PATCH being equivalent).
The Read-Only commands that the HTTP API attaches to the gateway endpoint will
additional handled GET as they did before (but stop handling PUT,DELETEs).
By limiting the request types we address the possibility that a website
accessed by a browser abuses the IPFS API by issuing GET requests to it which
have no Origin or Referrer set, and are thus bypass CORS and CSRF protections.
This is a breaking change for clients that relay on GET requests against the
HTTP endpoint (usually :5001). Applications integrating on top of the
gateway-read-only API should still work (including cross-domain access).
Co-Authored-By: Steven Allen <steven@stebalien.com>
Co-Authored-By: Marcin Rataj <lidel@lidel.org>
When request is sent to http://localhost:8080/ipfs/$cid response has
HTTP 301 status code and "Location" header with redirect destination at
$cid.ipfs.localhost:8080
Redirect is followed by browsersi, but not by commandline tools.
Status 301 is ignored by curl in default mode: it will print response
and won't follow redirect, user needs to add -L for that.
To fix curl, we return correct payload in body of HTTP 301 response,
but set Clear-Site-Data header to ensure Origin sandbox can't be abused.
This requires a surgical workaround:
If Location header is present in ResponseWriter's Header map,
we ensure http.ServeContent() returns HTTP 301
Context: https://github.com/ipfs/go-ipfs/pull/6982
License: MIT
Signed-off-by: Marcin Rataj <lidel@lidel.org>
Instead of adding a new fake header (that could be spoofed by the client...),
just read the original request URI from the request object.
This also removes support for suborigins. They have never been implemented in
browsers and it looks like efforts have stalled. We can add support back if we
need it but, well, maintaining support was going to be more trouble than it was
worth.
License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>
We've deprecated this system and have yet to move to a new system. We might as
well remove everything, switch to a new system, then deliberately trace the
entire system.
1. Require files to have known sizes. We can add support for unknown sizes
_later_ but we can't use ServeContent for those files.
2. Replace the `sizeReadSeeker` with a `lazySeeker`. This one makes no
assumptions about how it's used so we're less likely to run into weird bugs.
1. Fix handling of PUT. The simple implementation was the correct
implementation, I have no idea what was going on here.
2. Use MFS everywhere to reduce code duplication and add support for sharded
directories.
3. _Correctly_ block IPNS.
4. Remove the dependency on `core.IpfsNode`.
5. Remove support for putting empty directories with a well-known CID. It was
useless as directories are automatically created.
