67 lines
2.0 KiB
Rust
67 lines
2.0 KiB
Rust
//! Proxmox Backup Server Configuration library
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//!
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//! This library contains helper to read, parse and write the
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//! configuration files.
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use failure::*;
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pub mod datastore;
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use crate::tools;
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use crate::buildcfg;
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/// Check configuration directory permissions
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///
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/// For security reasons, we want to make sure they are set correctly:
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/// * owned by 'backup' user/group
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/// * nobody else can read (mode 0700)
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pub fn check_confidir_permissions() -> Result<(), Error> {
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let cfgdir = buildcfg::CONFIGDIR;
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let (backup_uid, backup_gid) = tools::getpwnam_ugid("backup")?;
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try_block!({
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let stat = nix::sys::stat::stat(cfgdir)?;
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if stat.st_uid != backup_uid {
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bail!("wrong user ({} != {})", stat.st_uid, backup_uid);
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}
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if stat.st_gid != backup_gid {
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bail!("wrong group ({} != {})", stat.st_gid, backup_gid);
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}
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let perm = stat.st_mode & 0o777;
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if perm != 0o700 {
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bail!("wrong permission ({:o} != {:o})", perm, 0o700);
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}
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Ok(())
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}).map_err(|err| format_err!("configuration directory '{}' permission problem - {}", cfgdir, err))
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}
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pub fn create_configdir() -> Result<(), Error> {
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use nix::sys::stat::Mode;
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let cfgdir = buildcfg::CONFIGDIR;
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let (backup_uid, backup_gid) = tools::getpwnam_ugid("backup")?;
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match nix::unistd::mkdir(cfgdir, Mode::from_bits_truncate(0o700)) {
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Ok(()) => {},
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Err(nix::Error::Sys(nix::errno::Errno::EEXIST)) => {
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check_confidir_permissions()?;
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return Ok(());
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},
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Err(err) => bail!("unable to create configuration directory '{}' - {}", cfgdir, err),
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}
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try_block!({
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let uid = nix::unistd::Uid::from_raw(backup_uid);
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let gid = nix::unistd::Gid::from_raw(backup_gid);
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nix::unistd::chown(cfgdir, Some(uid), Some(gid))?;
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Ok(())
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}).map_err(|err: Error| format_err!(
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"unable to set configuration directory '{}' permissions - {}", cfgdir, err))
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}
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