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p2p/net/filter: Guard with a mutex

Browse Source 
Callers assume this is safe to call whenever, let's make it so.

License: MIT
Signed-off-by: Tommi Virtanen <tv@eagain.net>
This commit is contained in:
Tommi Virtanen
2015-09-01 16:49:38 -07:00
committed by Jeromy
parent 6e126ed79d
commit e49e610b07
1 changed files with 10 additions and 0 deletions
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10
p2p/net/filter/filter.go
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@ -3,12 +3,14 @@ package filter
import (
"net"
"strings"
"sync"
ma "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
manet "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
)
type Filters struct {
mu sync.RWMutex
filters map[string]*net.IPNet
}
@ -19,6 +21,8 @@ func NewFilters() *Filters {
}
func (fs *Filters) AddDialFilter(f *net.IPNet) {
fs.mu.Lock()
defer fs.mu.Unlock()
fs.filters[f.String()] = f
}
@ -31,6 +35,8 @@ func (f *Filters) AddrBlocked(a ma.Multiaddr) bool {
ipstr := strings.Split(addr, ":")[0]
ip := net.ParseIP(ipstr)
f.mu.RLock()
defer f.mu.RUnlock()
for _, ft := range f.filters {
if ft.Contains(ip) {
return true
@ -41,6 +47,8 @@ func (f *Filters) AddrBlocked(a ma.Multiaddr) bool {
func (f *Filters) Filters() []*net.IPNet {
var out []*net.IPNet
f.mu.RLock()
defer f.mu.RUnlock()
for _, ff := range f.filters {
out = append(out, ff)
}
@ -48,5 +56,7 @@ func (f *Filters) Filters() []*net.IPNet {
}
func (f *Filters) Remove(ff *net.IPNet) {
f.mu.Lock()
defer f.mu.Unlock()
delete(f.filters, ff.String())
}