public inbox for pve-devel@lists.proxmox.com
 help / color / mirror / Atom feed
* [pve-devel] [PATCH http-server 1/2] fix multipart upload: ignore additional headers
@ 2022-12-06 15:16 Matthias Heiserer
  2022-12-06 15:16 ` [pve-devel] [PATCH http-server 2/2] fix multipart upload: header order Matthias Heiserer
  2022-12-07 10:52 ` [pve-devel] [PATCH http-server 1/2] fix multipart upload: ignore additional headers Matthias Heiserer
  0 siblings, 2 replies; 3+ messages in thread
From: Matthias Heiserer @ 2022-12-06 15:16 UTC (permalink / raw)
  To: pve-devel

Reported in the forum: https://forum.proxmox.com/threads/image-upload-fails-after-upgrading-from-7-1-to-7-3.119051/#post-516517

When additional headers existed in the request body, the upload failed.
With this patch, all additional headers get ignored.

Example: The following upload would fail because no
headers were expected after Content-Disposition.

```
--EPIHyQJFC5ftgoXHMe8-Jc6E7FqA4oMb0QBfOTz
Content-Disposition: form-data; name="content"
Content-Type: text/plain; charset=ISO-8859-1

iso
```

Fixed upload was tested using
* Curl
* GUI
* Apache HttpClient 5

Signed-off-by: Matthias Heiserer <m.heiserer@proxmox.com>
---
 src/PVE/APIServer/AnyEvent.pm | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/PVE/APIServer/AnyEvent.pm b/src/PVE/APIServer/AnyEvent.pm
index f397a8c..db89ff2 100644
--- a/src/PVE/APIServer/AnyEvent.pm
+++ b/src/PVE/APIServer/AnyEvent.pm
@@ -1201,11 +1201,19 @@ sub file_upload_multipart {
 	    $rstate->{phase} = 1;
 	}
 
+	my $remove_until_data = sub {
+	    my ($hdl) = @_;
+	    # remove any remaining multipart "headers" like Content-Type
+	    $hdl->{rbuf} =~ s/^.*?${newline_re}{2}//s;
+	};
+
 	my $extract_form_disposition = sub {
 	    my ($name) = @_;
-	    if ($hdl->{rbuf} =~ s/^${delim_re}Content-Disposition: (.*?); name="$name"(.*?)($delim_re)/$3/s) {
+	    if ($hdl->{rbuf} =~ s/^${delim_re}Content-Disposition: (.*?); name="$name"(.*)$/$2/s) {
 		assert_form_disposition($1);
-		$rstate->{params}->{$name} = trim($2);
+		$remove_until_data->($hdl);
+		$hdl->{rbuf} =~ s/^(.*?)(${delim_re})/$2/s;
+		$rstate->{params}->{$name} = trim($1);
 	    }
 	};
 
@@ -1224,6 +1232,7 @@ sub file_upload_multipart {
 		die "wrong field name '$2' for file upload, expected 'filename'" if $2 ne "filename";
 		$rstate->{phase} = 2;
 		$rstate->{params}->{filename} = trim($3);
+		$remove_until_data->($hdl);
 	    }
 	}
 
-- 
2.30.2





^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2022-12-07 10:53 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-12-06 15:16 [pve-devel] [PATCH http-server 1/2] fix multipart upload: ignore additional headers Matthias Heiserer
2022-12-06 15:16 ` [pve-devel] [PATCH http-server 2/2] fix multipart upload: header order Matthias Heiserer
2022-12-07 10:52 ` [pve-devel] [PATCH http-server 1/2] fix multipart upload: ignore additional headers Matthias Heiserer

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Service provided by Proxmox Server Solutions GmbH | Privacy | Legal