mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-08 20:28:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Use last X-Forwarded-For header (#367)

Browse source 
This header is non-standard but AWS seems to need this.
This commit is contained in:
Paul Kulchenko 2022-03-14 17:21:15 -07:00 • committed by GitHub
parent cfc557f7c7
commit 2a938b3eaa
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 16 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

3
tool/net/help.txt
View file

@ -574,7 +574,8 @@ FUNCTIONS
Returns client ip4 address and port, e.g. 0x01020304,31337 would
represent 1.2.3.4:31337. This is the same as GetClientAddr except
it will use the ip:port from the X-Forwarded-For header, only if
IsPrivateIp or IsLoopbackIp return true.
IsPrivateIp or IsLoopbackIp return true. When multiple addresses
are present in the header, the last/right-most address is used.
GetClientAddr() → ip:uint32,port:uint16
Returns client socket ip4 address and port, e.g. 0x01020304,31337

8
tool/net/redbean.c
View file

@ -822,8 +822,12 @@ static inline void GetRemoteAddr(uint32_t *ip, uint16_t *port) {
GetClientAddr(ip, port);
if (HasHeader(kHttpXForwardedFor) &&
(IsPrivateIp(*ip) || IsLoopbackIp(*ip))) {
ParseForwarded(HeaderData(kHttpXForwardedFor),
HeaderLength(kHttpXForwardedFor), ip, port);
if (ParseForwarded(HeaderData(kHttpXForwardedFor),
HeaderLength(kHttpXForwardedFor),
ip, port) == -1)
WARNF("invalid X-Forwarded-For value: %`'.*s",
HeaderLength(kHttpXForwardedFor),
HeaderData(kHttpXForwardedFor));
}
}