DNSCrypt/dnscrypt-proxy
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Merge branch 'master' of github.com:jedisct1/dnscrypt-proxy

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* 'master' of github.com:jedisct1/dnscrypt-proxy:
  Move the time check function down, make it more readable
  time-based access control: done, for prefixes & suffixes rules
This commit is contained in:
Frank Denis 2018-02-01 08:51:54 +01:00
commit 9b4eb54c0b
1 changed files with 32 additions and 6 deletions
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38
dnscrypt-proxy/plugin_block_name.go
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@ -131,7 +131,6 @@ func (plugin *PluginBlockName) Init(proxy *Proxy) error {
} else {
weeklyRanges = &weeklyRangesX
}
_ = weeklyRanges
}
line = strings.ToLower(line)
switch blockType {
@ -181,16 +180,17 @@ func (plugin *PluginBlockName) Eval(pluginsState *PluginsState, msg *dns.Msg) er
}
revQname := StringReverse(qName)
reject, reason := false, ""
var weeklyRanges *WeeklyRanges
if !reject {
if match, _, found := plugin.blockedSuffixes.Root().LongestPrefix([]byte(revQname)); found {
if match, weeklyRangesX, found := plugin.blockedSuffixes.Root().LongestPrefix([]byte(revQname)); found {
if len(match) == len(qName) || revQname[len(match)] == '.' {
reject, reason = true, "*."+StringReverse(string(match))
reject, reason, weeklyRanges = true, "*."+StringReverse(string(match)), weeklyRangesX.(*WeeklyRanges)
} else if len(match) < len(revQname) && len(revQname) > 0 {
if i := strings.LastIndex(revQname, "."); i > 0 {
pName := revQname[:i]
if match, _, found := plugin.blockedSuffixes.Root().LongestPrefix([]byte(pName)); found {
if len(match) == len(pName) || pName[len(match)] == '.' {
reject, reason = true, "*."+StringReverse(string(match))
reject, reason, weeklyRanges = true, "*."+StringReverse(string(match)), weeklyRangesX.(*WeeklyRanges)
}
}
}
@ -198,9 +198,9 @@ func (plugin *PluginBlockName) Eval(pluginsState *PluginsState, msg *dns.Msg) er
}
}
if !reject {
match, _, found := plugin.blockedPrefixes.Root().LongestPrefix([]byte(qName))
match, weeklyRangesX, found := plugin.blockedPrefixes.Root().LongestPrefix([]byte(qName))
if found {
reject, reason = true, string(match)+"*"
reject, reason, weeklyRanges = true, string(match)+"*", weeklyRangesX.(*WeeklyRanges)
}
}
if !reject {
@ -219,6 +219,11 @@ func (plugin *PluginBlockName) Eval(pluginsState *PluginsState, msg *dns.Msg) er
}
}
}
if reject {
if weeklyRanges != nil && !weeklyRanges.Match() {
reject = false
}
}
if reject {
pluginsState.action = PluginsActionReject
if plugin.outFd != nil {
@ -321,3 +326,24 @@ func ParseAllWeeklyRanges(allWeeklyRangesStr map[string]WeeklyRangesStr) (*map[s
}
return &allWeeklyRanges, nil
}
func (weeklyRanges *WeeklyRanges) Match() bool {
now := time.Now().Local()
day := now.Weekday()
weeklyRange := weeklyRanges.ranges[day]
if len(weeklyRange) == 0 {
return false
}
hour, min, _ := now.Clock()
nowX := (hour*60 + min) * 60
for _, timeRange := range weeklyRange {
if timeRange.after > timeRange.before {
if nowX >= timeRange.after || nowX <= timeRange.before {
return true
}
} else if nowX >= timeRange.after && nowX <= timeRange.before {
return true
}
}
return false
}