Emmanuel BENOîT
610cbf28f8
* An example configuration file has been added.
* The data structure that corresponds to the configuration has been
defined, and functions to load it have been added.
* Logging using logrus and command line arguments that configure
logging and set the configuration file's path have been added.
* Opening the UNIX socket has been implemented.
47 lines
1 KiB
Go
47 lines
1 KiB
Go
package main
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import (
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"fmt"
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"net"
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"os"
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"os/user"
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"strconv"
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)
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func configureSocket(cfg tSocketConfig) error {
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if cfg.Group != "" {
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group, err := user.LookupGroup(cfg.Group)
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if err != nil {
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return fmt.Errorf("Group %s not found: %w", cfg.Group, err)
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}
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gid, err := strconv.Atoi(group.Gid)
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if err != nil {
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return fmt.Errorf("Group %s has non-numeric GID %s", cfg.Group, group.Gid)
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}
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err = os.Chown(cfg.Path, -1, gid)
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if err != nil {
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return fmt.Errorf("Cannot change group on UNIX socket: %w", err)
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}
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}
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err := os.Chmod(cfg.Path, cfg.Mode)
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if err != nil {
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return fmt.Errorf("Cannot set UNIX socket access mode: %w", err)
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}
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return nil
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}
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func initSocket(cfg tSocketConfig) (net.Listener, error) {
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listener, err := net.Listen("unix", cfg.Path)
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if err != nil {
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return nil, fmt.Errorf("Cannot listen on UNIX socket at %s: %w", cfg.Path, err)
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}
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err = configureSocket(cfg)
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if err != nil {
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listener.Close()
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return nil, err
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}
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log.WithField("path", cfg.Path).Info("UNIX socket created")
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return listener, nil
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}
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