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src/backup/manifest.rs: add verify_file

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This commit is contained in:
Dietmar Maurer
2019-10-13 10:09:12 +02:00
parent 511a47bd73
commit f06b820ac0
3 changed files with 55 additions and 67 deletions
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53
src/backup/manifest.rs
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@ -28,6 +28,31 @@ impl BackupManifest {
self.files.push(FileInfo { filename, size, csum });
}
fn lookup_file_info(&self, name: &str) -> Result<&FileInfo, Error> {
let info = self.files.iter().find(|item| item.filename == name);
match info {
None => bail!("manifest does not contain file '{}'", name),
Some(info) => Ok(info),
}
}
pub fn verify_file(&self, name: &str, csum: &[u8; 32], size: u64) -> Result<(), Error> {
let info = self.lookup_file_info(name)?;
if size != info.size {
bail!("wrong size for file '{}' ({} != {}", name, info.size, size);
}
if csum != &info.csum {
bail!("wrong checksum for file '{}'", name);
}
Ok(())
}
pub fn into_json(self) -> Value {
json!({
"backup-type": self.snapshot.group().backup_type(),
@ -54,21 +79,23 @@ impl TryFrom<Value> for BackupManifest {
use crate::tools::{required_string_property, required_integer_property, required_array_property};
let backup_type = required_string_property(&data, "backup_type")?;
let backup_id = required_string_property(&data, "backup_id")?;
let backup_time = required_integer_property(&data, "backup_time")?;
proxmox::tools::try_block!({
let backup_type = required_string_property(&data, "backup_type")?;
let backup_id = required_string_property(&data, "backup_id")?;
let backup_time = required_integer_property(&data, "backup_time")?;
let snapshot = BackupDir::new(backup_type, backup_id, backup_time);
let snapshot = BackupDir::new(backup_type, backup_id, backup_time);
let mut files = Vec::new();
for item in required_array_property(&data, "files")?.iter() {
let filename = required_string_property(item, "filename")?.to_owned();
let csum = required_string_property(item, "csum")?;
let csum = proxmox::tools::hex_to_digest(csum)?;
let size = required_integer_property(item, "size")? as u64;
files.push(FileInfo { filename, size, csum });
}
let mut files = Vec::new();
for item in required_array_property(&data, "files")?.iter() {
let filename = required_string_property(item, "filename")?.to_owned();
let csum = required_string_property(item, "csum")?;
let csum = proxmox::tools::hex_to_digest(csum)?;
let size = required_integer_property(item, "size")? as u64;
files.push(FileInfo { filename, size, csum });
}
Ok(Self { files, snapshot })
}).map_err(|err: Error| format_err!("unable to parse backup manifest - {}", err))
Ok(Self { files, snapshot })
}
}