diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/middleware/remote_ip.rb')
| -rw-r--r-- | actionpack/lib/action_dispatch/middleware/remote_ip.rb | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/remote_ip.rb b/actionpack/lib/action_dispatch/middleware/remote_ip.rb index 4e36c9bb49..cbb066b092 100644 --- a/actionpack/lib/action_dispatch/middleware/remote_ip.rb +++ b/actionpack/lib/action_dispatch/middleware/remote_ip.rb @@ -2,14 +2,14 @@ module ActionDispatch # This middleware calculates the IP address of the remote client that is # making the request. It does this by checking various headers that could # contain the address, and then picking the last-set address that is not - # on the list of trusted IPs. This follows the precendent set by e.g. + # on the list of trusted IPs. This follows the precedent set by e.g. # {the Tomcat server}[https://issues.apache.org/bugzilla/show_bug.cgi?id=50453], # with {reasoning explained at length}[http://blog.gingerlime.com/2012/rails-ip-spoofing-vulnerabilities-and-protection] # by @gingerlime. A more detailed explanation of the algorithm is given # at GetIp#calculate_ip. # # Some Rack servers concatenate repeated headers, like {HTTP RFC 2616}[http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2] - # requires. Some Rack servers simply drop preceeding headers, and only report + # requires. Some Rack servers simply drop preceding headers, and only report # the value that was {given in the last header}[http://andre.arko.net/2011/12/26/repeated-headers-and-ruby-web-servers]. # If you are behind multiple proxy servers (like Nginx to HAProxy to Unicorn) # then you should test your Rack server to make sure your data is good. @@ -31,7 +31,7 @@ module ActionDispatch TRUSTED_PROXIES = %r{ ^127\.0\.0\.1$ | # localhost IPv4 ^::1$ | # localhost IPv6 - ^fc00: | # private IPv6 range fc00 + ^[fF][cCdD] | # private IPv6 range fc00::/7 ^10\. | # private IPv4 range 10.x.x.x ^172\.(1[6-9]|2[0-9]|3[0-1])\.| # private IPv4 range 172.16.0.0 .. 172.31.255.255 ^192\.168\. # private IPv4 range 192.168.x.x @@ -47,12 +47,12 @@ module ActionDispatch # clients (like WAP devices), or behind proxies that set headers in an # incorrect or confusing way (like AWS ELB). # - # The +custom_trusted+ argument can take a regex, which will be used + # The +custom_proxies+ argument can take a regex, which will be used # instead of +TRUSTED_PROXIES+, or a string, which will be used in addition # to +TRUSTED_PROXIES+. Any proxy setup will put the value you want in the # middle (or at the beginning) of the X-Forwarded-For list, with your proxy # servers after it. If your proxies aren't removed, pass them in via the - # +custom_trusted+ parameter. That way, the middleware will ignore those + # +custom_proxies+ parameter. That way, the middleware will ignore those # IP addresses, and return the one that you want. def initialize(app, check_ip_spoofing = true, custom_proxies = nil) @app = app @@ -83,7 +83,7 @@ module ActionDispatch # This constant contains a regular expression that validates every known # form of IP v4 and v6 address, with or without abbreviations, adapted - # from {this gist}[https://gist.github.com/1289635]. + # from {this gist}[https://gist.github.com/gazay/1289635]. VALID_IP = %r{ (^(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[0-9]{1,2})(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[0-9]{1,2})){3}$) | # ip v4 (^( @@ -101,7 +101,7 @@ module ActionDispatch (([0-9A-Fa-f]{1,4}:){0,4}:([0-9A-Fa-f]{1,4}:){1}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)) | # ip v6 with compatible to v4 (::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d) |(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)) | # ip v6 with compatible to v4 ([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4}) | # ip v6 with compatible to v4 - (::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4}) | # ip v6 with double colon at the begining + (::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4}) | # ip v6 with double colon at the beginning (([0-9A-Fa-f]{1,4}:){1,7}:) # ip v6 without ending )$) }x @@ -143,7 +143,7 @@ module ActionDispatch # proxies with incompatible IP header conventions, and there is no way # for us to determine which header is the right one after the fact. # Since we have no idea, we give up and explode. - should_check_ip = @check_ip && client_ips.last + should_check_ip = @check_ip && client_ips.last && forwarded_ips.last if should_check_ip && !forwarded_ips.include?(client_ips.last) # We don't know which came from the proxy, and which from the user raise IpSpoofAttackError, "IP spoofing attack?! " + |