113 lines
3.4 KiB
Rust
113 lines
3.4 KiB
Rust
//
|
|
// imag - the personal information management suite for the commandline
|
|
// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public
|
|
// License as published by the Free Software Foundation; version
|
|
// 2.1 of the License.
|
|
//
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
//
|
|
|
|
use toml::Value;
|
|
|
|
use libimagstore::hook::Hook;
|
|
use libimagstore::hook::error::HookErrorKind as HEK;
|
|
use libimagstore::hook::accessor::HookDataAccessor as HDA;
|
|
use libimagstore::hook::accessor::HookDataAccessorProvider;
|
|
use libimagstore::hook::accessor::NonMutableHookDataAccessor;
|
|
use libimagstore::hook::result::HookResult;
|
|
use libimagstore::store::FileLockEntry;
|
|
use libimagentrylink::internal::InternalLinker;
|
|
|
|
|
|
mod error {
|
|
generate_error_imports!();
|
|
generate_error_types!(NoLinksLeftCheckerHookError, NoLinksLeftCheckerHookErrorKind,
|
|
ReadInternalLinksError => "Error while reading internal links of entry",
|
|
LinksLeft => "The entry has links and therefor cannot be deleted."
|
|
);
|
|
}
|
|
use self::error::NoLinksLeftCheckerHookErrorKind as NLLCHEK;
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub struct DenyDeletionOfLinkedEntriesHook {
|
|
abort: bool
|
|
}
|
|
|
|
impl DenyDeletionOfLinkedEntriesHook {
|
|
|
|
pub fn new() -> DenyDeletionOfLinkedEntriesHook {
|
|
DenyDeletionOfLinkedEntriesHook {
|
|
abort: true // by default, this hook aborts actions
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
impl Hook for DenyDeletionOfLinkedEntriesHook {
|
|
|
|
fn name(&self) -> &'static str {
|
|
"stdhook_linked_entries_cannot_be_deleted"
|
|
}
|
|
|
|
fn set_config(&mut self, v: &Value) {
|
|
self.abort = match v.lookup("aborting") {
|
|
Some(&Value::Boolean(b)) => b,
|
|
Some(_) => {
|
|
warn!("Configuration error, 'aborting' must be a Boolean (true|false).");
|
|
warn!("Assuming 'true' now.");
|
|
true
|
|
},
|
|
None => {
|
|
warn!("No key 'aborting' - Assuming 'true'");
|
|
true
|
|
},
|
|
};
|
|
}
|
|
|
|
}
|
|
|
|
impl HookDataAccessorProvider for DenyDeletionOfLinkedEntriesHook {
|
|
|
|
fn accessor(&self) -> HDA {
|
|
HDA::NonMutableAccess(self)
|
|
}
|
|
|
|
}
|
|
|
|
impl NonMutableHookDataAccessor for DenyDeletionOfLinkedEntriesHook {
|
|
|
|
fn access(&self, fle: &FileLockEntry) -> HookResult<()> {
|
|
use libimagerror::into::IntoError;
|
|
use self::error::MapErrInto;
|
|
|
|
debug!("[NO LINKS LEFT CHECKER HOOK] {:?}", fle.get_location());
|
|
|
|
let n = try!(fle
|
|
.get_internal_links()
|
|
.map(|i| i.count())
|
|
.map_err_into(NLLCHEK::ReadInternalLinksError)
|
|
.map_err(Box::new)
|
|
.map_err(|e| HEK::HookExecutionError.into_error_with_cause(e)));
|
|
|
|
if n > 0 {
|
|
Err(NLLCHEK::LinksLeft.into_error())
|
|
.map_err(Box::new)
|
|
.map_err(|e| HEK::HookExecutionError.into_error_with_cause(e))
|
|
} else {
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|