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fix #3854 paperkey import to proxmox-tape 

added a parameter to the cli for importing tape key via a json-parameter or
via reading a exported paperkey-file or json-file.
For this i also added a backupkey parameter to the api, but here it only
accepts json.

The cli interprets the parameter first as json-string, then json-file
and last as paperkey-file.

functionality:
proxmox-tape key paperkey [fingerprint of existing key] > paperkey.backup
proxmox-tape key restore --backupkey paperkey.backup # key from line above
proxmox-tape key restore --backupkey paperkey.json # only the json
proxmox-tape key restore --backupkey '{"kdf": {"Scrypt": ...' # json as string

for importing the key as paperkey-file it is irrelevant, if the paperkey got exported as html
or txt.

Signed-off-by: Markus Frank <m.frank@proxmox.com>
This commit is contained in:
Markus Frank 2022-03-24 12:49:30 +01:00 committed by Thomas Lamprecht
parent 7c22932c64
commit b676dbce78
2 changed files with 102 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
src/api2/tape/drive.rs
View File

@ -10,7 +10,7 @@ use proxmox_sys::sortable;
use proxmox_router::{
list_subdirs_api_method, Permission, Router, RpcEnvironment, RpcEnvironmentType, SubdirMap,
};
use proxmox_schema::api;
use proxmox_schema::{api, param_bail};
use proxmox_section_config::SectionConfigData;
use proxmox_uuid::Uuid;
use proxmox_sys::{task_log, task_warn};
@ -24,6 +24,8 @@ use pbs_api_types::{
use pbs_api_types::{PRIV_TAPE_AUDIT, PRIV_TAPE_READ, PRIV_TAPE_WRITE};
use pbs_config::CachedUserInfo;
use pbs_config::key_config::KeyConfig;
use pbs_config::tape_encryption_keys::insert_key;
use pbs_tape::{
BlockReadError,
sg_tape::tape_alert_flags_critical,
@ -607,10 +609,18 @@ fn write_media_label(
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
password: {
description: "Encryption key password.",
},
backupkey: {
description: "A previously exported paperkey in JSON format.",
type: String,
min_length: 300,
max_length: 600,
optional: true,
},
},
},
access: {
@ -619,29 +629,48 @@ fn write_media_label(
)]
/// Try to restore a tape encryption key
pub async fn restore_key(
drive: String,
drive: Option<String>,
password: String,
backupkey: Option<String>,
) -> Result<(), Error> {
run_drive_blocking_task(
drive.clone(),
"restore key".to_string(),
move |config| {
let mut drive = open_drive(&config, &drive)?;
let (_media_id, key_config) = drive.read_label()?;
if (drive.is_none() && backupkey.is_none()) || (drive.is_some() && backupkey.is_some()) {
param_bail!(
"drive",
format_err!("Please specify either a valid drive name or a backupkey")
);
}
if let Some(key_config) = key_config {
let password_fn = || { Ok(password.as_bytes().to_vec()) };
let (key, ..) = key_config.decrypt(&password_fn)?;
pbs_config::tape_encryption_keys::insert_key(key, key_config, true)?;
} else {
bail!("media does not contain any encryption key configuration");
if let Some(drive) = drive {
run_drive_blocking_task(
drive.clone(),
"restore key".to_string(),
move |config| {
let mut drive = open_drive(&config, &drive)?;
let (_media_id, key_config) = drive.read_label()?;
if let Some(key_config) = key_config {
let password_fn = || { Ok(password.as_bytes().to_vec()) };
let (key, ..) = key_config.decrypt(&password_fn)?;
insert_key(key, key_config, true)?;
} else {
bail!("media does not contain any encryption key configuration");
}
Ok(())
}
)
.await?;
}else if let Some(backupkey) = backupkey {
let key_config: KeyConfig =
serde_json::from_str(&backupkey).map_err(|err| format_err!("<errmsg>: {}", err))?;
let password_fn = || Ok(password.as_bytes().to_vec());
let (key, ..) = key_config.decrypt(&password_fn)?;
insert_key(key, key_config, false)?;
}
Ok(())
}
)
.await
Ok(())
}
#[api(

59
src/bin/proxmox_tape/encryption_key.rs
View File

@ -1,8 +1,8 @@
use anyhow::{bail, Error};
use anyhow::{bail, format_err, Error};
use serde_json::Value;
use proxmox_router::{cli::*, ApiHandler, RpcEnvironment};
use proxmox_schema::api;
use proxmox_schema::{api, param_bail};
use proxmox_sys::linux::tty;
use pbs_api_types::{
@ -12,6 +12,7 @@ use pbs_api_types::{
use pbs_datastore::paperkey::{PaperkeyFormat, generate_paper_key};
use pbs_config::tape_encryption_keys::{load_key_configs,complete_key_fingerprint};
use pbs_config::key_config::KeyConfig;
use proxmox_backup::api2;
@ -186,6 +187,9 @@ fn change_passphrase(
Ok(())
}
pub const BEGIN_MARKER: &str = "-----BEGIN PROXMOX BACKUP KEY-----";
pub const END_MARKER: &str = "-----END PROXMOX BACKUP KEY-----";
#[api(
input: {
properties: {
@ -193,23 +197,70 @@ fn change_passphrase(
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
"backupkey": {
description: "Importing a previously exported backupkey with either an exported paperkey-file, json-string or a json-file",
type: String,
optional: true,
},
},
},
)]
/// Restore encryption key from tape (read password from stdin)
async fn restore_key(
mut param: Value,
backupkey: Option<String>,
rpcenv: &mut dyn RpcEnvironment,
) -> Result<(), Error> {
let (config, _digest) = pbs_config::drive::config()?;
param["drive"] = crate::extract_drive_name(&mut param, &config)?.into();
let drive = crate::extract_drive_name(&mut param, &config);
if !tty::stdin_isatty() {
bail!("no password input mechanism available");
}
let password = tty::read_password("Tepe Encryption Key Password: ")?;
if (drive.is_err() && backupkey.is_none()) || (drive.is_ok() && backupkey.is_some()) {
param_bail!(
"drive",
format_err!("Please specify either a valid drive name or a backupkey")
);
}
if drive.is_ok() {
param["drive"] = drive.unwrap().into();
}
if let Some(backupkey) = backupkey {
if serde_json::from_str::<KeyConfig>(&backupkey).is_ok() {
// json as Parameter
println!("backupkey to import: {}", backupkey);
param["backupkey"] = backupkey.into();
} else {
println!("backupkey is not a valid json. Interpreting Parameter as a filename");
let data = proxmox_sys::fs::file_read_string(backupkey)?;
if serde_json::from_str::<KeyConfig>(&data).is_ok() {
// standalone json-file
println!("backupkey to import: {}", data);
param["backupkey"] = data.into();
} else {
// exported paperkey-file
let start = data
.find(BEGIN_MARKER)
.ok_or_else(|| format_err!("cannot find key start marker"))?
+ BEGIN_MARKER.len();
let data_remain = &data[start..];
let end = data_remain
.find(END_MARKER)
.ok_or_else(|| format_err!("cannot find key end marker below start marker"))?;
let backupkey_extract = &data_remain[..end];
println!("backupkey to import: {}", backupkey_extract);
param["backupkey"] = backupkey_extract.into();
}
}
}
let password = tty::read_password("Tape Encryption Key Password: ")?;
param["password"] = String::from_utf8(password)?.into();
let info = &api2::tape::drive::API_METHOD_RESTORE_KEY;