From: Matthias Heiserer <m.heiserer@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH http-server 1/2] fix multipart upload: ignore additional headers
Date: Tue, 6 Dec 2022 16:16:28 +0100 [thread overview]
Message-ID: <20221206151629.86019-1-m.heiserer@proxmox.com> (raw)
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
next reply other threads:[~2022-12-06 15:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-06 15:16 Matthias Heiserer [this message]
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
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