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