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rewrite middleware: add PrimarySubdomain and simplify its usage example

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This commit is contained in:
Gerasimos (Makis) Maropoulos
2020-08-20 03:05:47 +03:00
parent 12737c5b7f
commit ffae9c0d09
6 changed files with 167 additions and 111 deletions
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15
core/netutil/addr.go
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@@ -8,14 +8,13 @@ import (
)
var (
loopbackRegex *regexp.Regexp
loopbackSubRegex *regexp.Regexp
// LoopbackRegex the regex if matched a host:port is a loopback.
LoopbackRegex = regexp.MustCompile(`^localhost$|^127(?:\.[0-9]+){0,2}\.[0-9]+$|^(?:0*\:)*?:?0*1$`)
loopbackSubRegex = regexp.MustCompile(`^127(?:\.[0-9]+){0,2}\.[0-9]+$|^(?:0*\:)*?:?0*1$`)
machineHostname string
)
func init() {
loopbackRegex, _ = regexp.Compile(`^localhost$|^127(?:\.[0-9]+){0,2}\.[0-9]+$|^(?:0*\:)*?:?0*1$`)
loopbackSubRegex, _ = regexp.Compile(`^127(?:\.[0-9]+){0,2}\.[0-9]+$|^(?:0*\:)*?:?0*1$`)
machineHostname, _ = os.Hostname()
}
@@ -46,9 +45,9 @@ func GetLoopbackSubdomain(s string) string {
}
// IsLoopbackHost tries to catch the local addresses when a developer
// navigates to a subdomain that its hostname differs from Application.Config.Addr.
// navigates to a subdomain that its hostname differs from Application.Configuration.VHost.
// Developer may want to override this function to return always false
// in order to not allow different hostname from Application.Config.Addr in local environment (remote is not reached).
// in order to not allow different hostname from Application.Configuration.VHost in local environment (remote is not reached).
var IsLoopbackHost = func(requestHost string) bool {
// this func will be called if we have a subdomain actually, not otherwise, so we are
// safe to do some hacks.
@@ -60,7 +59,7 @@ var IsLoopbackHost = func(requestHost string) bool {
// find the first index of [:]8080 or [/]mypath or nothing(root with loopback address like 127.0.0.1)
// remember: we are not looking for .com or these things, if is up and running then the developer
// would probably not want to reach the server with different Application.Config.Addr than
// would probably not want to reach the server with different Application.Configuration.VHost than
// he/she declared.
portOrPathIdx := strings.LastIndexByte(requestHost, ':')
@@ -92,7 +91,7 @@ var IsLoopbackHost = func(requestHost string) bool {
// so it shouldn't hurt so much, but we don't care a lot because it's a special case here
// because this function will be called only if developer him/herself can reach the server
// with a loopback/local address, so we are totally safe.
valid := loopbackRegex.MatchString(hostname)
valid := LoopbackRegex.MatchString(hostname)
if !valid { // if regex failed to match it, then try with the pc's name.
valid = hostname == machineHostname
}