feat: 支持ip转地址

common/config.go

@@ -45,6 +45,9 @@ type Config_ struct {
 		Position string `json:"position"`
 		OnInvite string `json:"on_invite"`
 	}
+
+	IP2RegionDBPath string
+	IP2RegionEnable bool
 }
 
 type LogConfig struct {
@@ -84,6 +87,8 @@ func ParseConfig(path string) (*Config_, error) {
 		SubPTZGlobalInterval:        load.Section("sip").Key("sub_ptz_global_interval").MustInt(),
 		DeviceDefaultMediaTransport: load.Section("sip").Key("device_default_media_transport").String(),
 		GlobalDropChannelType:       load.Section("sip").Key("global_drop_channel_type").String(),
+		IP2RegionDBPath:             load.Section("ip2region").Key("db_path").String(),
+		IP2RegionEnable:             load.Section("ip2region").Key("enable").MustBool(),
 	}
 
 	config_.Hooks.Online = load.Section("hooks").Key("online").String()

common/ip2region.go

@@ -0,0 +1,65 @@
+package common
+
+import (
+	"github.com/lionsoul2014/ip2region/binding/golang/xdb"
+	"strings"
+)
+
+var (
+	searcher *xdb.Searcher
+)
+
+func LoadIP2RegionDB(path string) error {
+	// 1、从 dbPath 加载整个 xdb 到内存
+	cBuff, err := xdb.LoadContentFromFile(path)
+	if err != nil {
+		return err
+	}
+
+	// 2、用全局的 cBuff 创建完全基于内存的查询对象。
+	searcher, err = xdb.NewWithBuffer(xdb.IPv4, cBuff)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func IP2Region(ip string) (string, error) {
+	// 3、查询
+	region, err := searcher.SearchByStr(ip)
+	if err != nil {
+		return "", err
+	}
+
+	// 合并成一个地址
+	var addressList []string
+	for _, address := range strings.Split(region, "|") {
+		if address == "" || address == "中国" || address == "0" {
+			continue
+		}
+
+		var same bool
+		for _, s := range addressList {
+			if s == address {
+				same = true
+				break
+			}
+		}
+
+		if same {
+			continue
+		}
+
+		addressList = append(addressList, address)
+	}
+
+	if length := len(addressList); length == 0 {
+		return "", nil
+	} else if length > 1 {
+		// 最后一个地址空格分开
+		addressList[length-2] += " "
+	}
+
+	return strings.Join(addressList, ""), nil
+}