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lua-resty-waf controller (#2304)

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This commit is contained in:
Elvin Efendi 2018-04-08 16:37:13 -04:00 • committed by Manuel Alejandro de Brito Fontes
parent b17ed7b6fd
commit a6fe800a47
15 changed files with 455 additions and 37 deletions
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88
internal/ingress/controller/template/template.go
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@ -119,29 +119,30 @@ var (
}
return true
},
"buildLocation": buildLocation,
"buildAuthLocation": buildAuthLocation,
"buildAuthResponseHeaders": buildAuthResponseHeaders,
"buildLoadBalancingConfig": buildLoadBalancingConfig,
"buildProxyPass": buildProxyPass,
"filterRateLimits": filterRateLimits,
"buildRateLimitZones": buildRateLimitZones,
"buildRateLimit": buildRateLimit,
"buildResolvers": buildResolvers,
"buildUpstreamName": buildUpstreamName,
"isLocationInLocationList": isLocationInLocationList,
"isLocationAllowed": isLocationAllowed,
"buildLogFormatUpstream": buildLogFormatUpstream,
"buildDenyVariable": buildDenyVariable,
"getenv": os.Getenv,
"contains": strings.Contains,
"hasPrefix": strings.HasPrefix,
"hasSuffix": strings.HasSuffix,
"toUpper": strings.ToUpper,
"toLower": strings.ToLower,
"formatIP": formatIP,
"buildNextUpstream": buildNextUpstream,
"getIngressInformation": getIngressInformation,
"buildLuaSharedDictionaries": buildLuaSharedDictionaries,
"buildLocation": buildLocation,
"buildAuthLocation": buildAuthLocation,
"buildAuthResponseHeaders": buildAuthResponseHeaders,
"buildLoadBalancingConfig": buildLoadBalancingConfig,
"buildProxyPass": buildProxyPass,
"filterRateLimits": filterRateLimits,
"buildRateLimitZones": buildRateLimitZones,
"buildRateLimit": buildRateLimit,
"buildResolvers": buildResolvers,
"buildUpstreamName": buildUpstreamName,
"isLocationInLocationList": isLocationInLocationList,
"isLocationAllowed": isLocationAllowed,
"buildLogFormatUpstream": buildLogFormatUpstream,
"buildDenyVariable": buildDenyVariable,
"getenv": os.Getenv,
"contains": strings.Contains,
"hasPrefix": strings.HasPrefix,
"hasSuffix": strings.HasSuffix,
"toUpper": strings.ToUpper,
"toLower": strings.ToLower,
"formatIP": formatIP,
"buildNextUpstream": buildNextUpstream,
"getIngressInformation": getIngressInformation,
"serverConfig": func(all config.TemplateConfig, server *ingress.Server) interface{} {
return struct{ First, Second interface{} }{all, server}
},
@ -167,6 +168,47 @@ func formatIP(input string) string {
return fmt.Sprintf("[%s]", input)
}
func buildLuaSharedDictionaries(s interface{}, dynamicConfigurationEnabled bool, disableLuaRestyWAF bool) string {
servers, ok := s.([]*ingress.Server)
if !ok {
glog.Errorf("expected an '[]*ingress.Server' type but %T was returned", s)
return ""
}
out := []string{}
if dynamicConfigurationEnabled {
out = append(out,
"lua_shared_dict configuration_data 5M",
"lua_shared_dict round_robin_state 1M",
"lua_shared_dict locks 512k",
"lua_shared_dict balancer_ewma 1M",
"lua_shared_dict balancer_ewma_last_touched_at 1M",
)
}
if !disableLuaRestyWAF {
luaRestyWAFEnabled := func() bool {
for _, server := range servers {
for _, location := range server.Locations {
if location.LuaRestyWAF.Enabled {
return true
}
}
}
return false
}()
if luaRestyWAFEnabled {
out = append(out, "lua_shared_dict waf_storage 64M")
}
}
if len(out) == 0 {
return ""
}
return strings.Join(out, ";\n\r") + ";"
}
// buildResolvers returns the resolvers reading the /etc/resolv.conf file
func buildResolvers(res interface{}, disableIpv6 interface{}) string {
// NGINX need IPV6 addresses to be surrounded by brackets