1 files changed, 110 insertions, 0 deletions
diff --git a/src/lib/hooks/hooks_parser.cc b/src/lib/hooks/hooks_parser.cc
new file mode 100644
index 0000000..cfd4a7e
--- /dev/null
+++ b/src/lib/hooks/hooks_parser.cc
@@ -0,0 +1,110 @@
+// Copyright (C) 2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <cc/data.h>
+#include <cc/dhcp_config_error.h>
+#include <hooks/hooks_parser.h>
+#include <boost/algorithm/string.hpp>
+#include <boost/foreach.hpp>
+#include <util/strutil.h>
+#include <vector>
+
+using namespace std;
+using namespace isc::data;
+using namespace isc::hooks;
+using namespace isc::dhcp;
+
+namespace isc {
+namespace hooks {
+
+// @todo use the flat style, split into list and item
+
+void
+HooksLibrariesParser::parse(HooksConfig& libraries, ConstElementPtr value) {
+    // Initialize.
+    libraries.clear();
+
+    if (!value) {
+        isc_throw(DhcpConfigError, "Tried to parse null hooks libraries");
+    }
+
+    // This is the new syntax.  Iterate through it and get each map.
+    BOOST_FOREACH(ConstElementPtr library_entry, value->listValue()) {
+        ConstElementPtr parameters;
+
+        // Is it a map?
+        if (library_entry->getType() != Element::map) {
+            isc_throw(DhcpConfigError, "hooks library configuration error:"
+                " one or more entries in the hooks-libraries list is not"
+                " a map (" << library_entry->getPosition() << ")");
+        }
+
+        // Iterate through each element in the map.  We check
+        // whether we have found a library element.
+        bool lib_found = false;
+
+        string libname = "";
+
+        // Let's explicitly reset the parameters, so we won't cover old
+        // values from the previous loop round.
+        parameters.reset();
+
+        BOOST_FOREACH(auto entry_item, library_entry->mapValue()) {
+            if (entry_item.first == "library") {
+                if (entry_item.second->getType() != Element::string) {
+                    isc_throw(DhcpConfigError, "hooks library configuration"
+                        " error: value of 'library' element is not a string"
+                        " giving the path to a hooks library (" <<
+                        entry_item.second->getPosition() << ")");
+                }
+
+                // Get the name of the library and add it to the list after
+                // removing quotes.
+                libname = (entry_item.second)->stringValue();
+
+                // Remove leading/trailing quotes and any leading/trailing
+                // spaces.
+                boost::erase_all(libname, "\"");
+                libname = isc::util::str::trim(libname);
+                if (libname.empty()) {
+                    isc_throw(DhcpConfigError, "hooks library configuration"
+                        " error: value of 'library' element must not be"
+                        " blank (" <<
+                        entry_item.second->getPosition() << ")");
+                }
+
+                // Note we have found the library name.
+                lib_found = true;
+                continue;
+            }
+
+            // If there are parameters, let's remember them.
+            if (entry_item.first == "parameters") {
+                parameters = entry_item.second;
+                continue;
+            }
+
+            // For all other parameters we will throw.
+            isc_throw(DhcpConfigError, "unknown hooks library parameter: "
+                      << entry_item.first << "("
+                      << library_entry->getPosition() << ")");
+        }
+
+        if (! lib_found) {
+            isc_throw(DhcpConfigError, "hooks library configuration error:"
+                " one or more hooks-libraries elements are missing the"
+                " name of the library"  <<
+                " (" << library_entry->getPosition() << ")");
+        }
+
+        libraries.add(libname, parameters);
+    }
+}
+
+}
+}