e5adccd9c5
- Environment variables `UID` and `GID`, both defaulting to `1000` - All subprocesses (openvpn, tinyproxy, etc.) run using the UID and GID given - All files are written with an ownership for the UID and GID given - Port forwarded file has also ownership for UID, GID and read permission only
52 lines
1.8 KiB
Go
52 lines
1.8 KiB
Go
package pia
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import (
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"encoding/hex"
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"encoding/json"
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"fmt"
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"github.com/qdm12/golibs/files"
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"github.com/qdm12/private-internet-access-docker/internal/constants"
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"github.com/qdm12/private-internet-access-docker/internal/models"
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)
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func (c *configurator) GetPortForward() (port uint16, err error) {
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c.logger.Info("%s: Obtaining port to be forwarded", logPrefix)
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b, err := c.random.GenerateRandomBytes(32)
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if err != nil {
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return 0, err
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}
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clientID := hex.EncodeToString(b)
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url := fmt.Sprintf("%s/?client_id=%s", constants.PIAPortForwardURL, clientID)
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content, status, err := c.client.GetContent(url)
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if err != nil {
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return 0, err
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} else if status != 200 {
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return 0, fmt.Errorf("status is %d for %s; does your PIA server support port forwarding?", status, url)
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} else if len(content) == 0 {
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return 0, fmt.Errorf("port forwarding is already activated on this connection, has expired, or you are not connected to a PIA region that supports port forwarding")
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}
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body := struct {
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Port uint16 `json:"port"`
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}{}
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if err := json.Unmarshal(content, &body); err != nil {
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return 0, fmt.Errorf("port forwarding response: %w", err)
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}
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c.logger.Info("%s: Port forwarded is %d", logPrefix, body.Port)
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return body.Port, nil
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}
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func (c *configurator) WritePortForward(filepath models.Filepath, port uint16, uid, gid int) (err error) {
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c.logger.Info("%s: Writing forwarded port to %s", logPrefix, filepath)
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return c.fileManager.WriteLinesToFile(
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string(filepath),
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[]string{fmt.Sprintf("%d", port)},
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files.Ownership(uid, gid),
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files.Permissions(400))
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}
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func (c *configurator) AllowPortForwardFirewall(device models.VPNDevice, port uint16) (err error) {
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c.logger.Info("%s: Allowing forwarded port %d through firewall", logPrefix, port)
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return c.firewall.AllowInputTrafficOnPort(device, port)
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}
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