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ProcessTree: add macos-specific loader and event adapter
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/// Copyright 2023 Google LLC | ||
/// | ||
/// Licensed under the Apache License, Version 2.0 (the "License"); | ||
/// you may not use this file except in compliance with the License. | ||
/// You may obtain a copy of the License at | ||
/// | ||
/// https://www.apache.org/licenses/LICENSE-2.0 | ||
/// | ||
/// Unless required by applicable law or agreed to in writing, software | ||
/// distributed under the License is distributed on an "AS IS" BASIS, | ||
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
/// See the License for the specific language governing permissions and | ||
/// limitations under the License. | ||
#ifndef SANTA__SANTAD_PROCESSTREE_ENDPOINTSECURITYADAPTER_H | ||
#define SANTA__SANTAD_PROCESSTREE_ENDPOINTSECURITYADAPTER_H | ||
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#include <EndpointSecurity/ESTypes.h> | ||
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#include "Source/santad/ProcessTree/tree.h" | ||
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namespace santa::santad::process_tree { | ||
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// Inform the tree of the ES event in msg. | ||
// This is idempotent on the tree, so can be called from multiple places with | ||
// the same msg. | ||
void InformFromESEvent(int client, ProcessTree &tree, const es_message_t *msg); | ||
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} // namespace santa::santad::process_tree | ||
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#endif |
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/// Copyright 2023 Google LLC | ||
/// | ||
/// Licensed under the Apache License, Version 2.0 (the "License"); | ||
/// you may not use this file except in compliance with the License. | ||
/// You may obtain a copy of the License at | ||
/// | ||
/// https://www.apache.org/licenses/LICENSE-2.0 | ||
/// | ||
/// Unless required by applicable law or agreed to in writing, software | ||
/// distributed under the License is distributed on an "AS IS" BASIS, | ||
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
/// See the License for the specific language governing permissions and | ||
/// limitations under the License. | ||
#include <EndpointSecurity/EndpointSecurity.h> | ||
#include <Foundation/Foundation.h> | ||
#include <bsm/libbsm.h> | ||
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#include "Source/santad/ProcessTree/process_tree.h" | ||
#include "Source/santad/ProcessTree/process_tree_macos.h" | ||
#include "absl/status/statusor.h" | ||
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namespace santa::santad::process_tree { | ||
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void InformFromESEvent(int client, ProcessTree &tree, const es_message_t *msg) { | ||
if (!tree.Step(client, msg->mach_time)) { | ||
return; | ||
}; | ||
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struct pid event_pid = PidFromAuditToken(msg->process->audit_token); | ||
auto proc = tree.Get(event_pid); | ||
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if (!proc) { | ||
return; | ||
} | ||
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switch (msg->event_type) { | ||
case ES_EVENT_TYPE_AUTH_EXEC: | ||
case ES_EVENT_TYPE_NOTIFY_EXEC: { | ||
std::vector<std::string> args; | ||
args.reserve(es_exec_arg_count(&msg->event.exec)); | ||
for (int i = 0; i < es_exec_arg_count(&msg->event.exec); i++) { | ||
es_string_token_t arg = es_exec_arg(&msg->event.exec, i); | ||
args.push_back(std::string(arg.data, arg.length)); | ||
} | ||
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es_string_token_t executable = msg->event.exec.target->executable->path; | ||
tree.HandleExec( | ||
msg->mach_time, **proc, PidFromAuditToken(msg->event.exec.target->audit_token), | ||
(struct program){.executable = std::string(executable.data, executable.length), | ||
.arguments = args}, | ||
(struct cred){ | ||
.uid = audit_token_to_euid(msg->event.exec.target->audit_token), | ||
.gid = audit_token_to_egid(msg->event.exec.target->audit_token), | ||
}); | ||
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break; | ||
} | ||
case ES_EVENT_TYPE_NOTIFY_FORK: { | ||
tree.HandleFork(msg->mach_time, **proc, | ||
PidFromAuditToken(msg->event.fork.child->audit_token)); | ||
break; | ||
} | ||
case ES_EVENT_TYPE_NOTIFY_EXIT: tree.HandleExit(msg->mach_time, **proc); break; | ||
default: return; | ||
} | ||
} | ||
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} // namespace santa::santad::process_tree |
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/// Copyright 2023 Google LLC | ||
/// | ||
/// Licensed under the Apache License, Version 2.0 (the "License"); | ||
/// you may not use this file except in compliance with the License. | ||
/// You may obtain a copy of the License at | ||
/// | ||
/// https://www.apache.org/licenses/LICENSE-2.0 | ||
/// | ||
/// Unless required by applicable law or agreed to in writing, software | ||
/// distributed under the License is distributed on an "AS IS" BASIS, | ||
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
/// See the License for the specific language governing permissions and | ||
/// limitations under the License. | ||
#ifndef SANTA__SANTAD_PROCESSTREE_TREE_DARWIN_H | ||
#define SANTA__SANTAD_PROCESSTREE_TREE_DARWIN_H | ||
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#include <bsm/libbsm.h> | ||
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namespace santa::santad::process_tree { | ||
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// Create a struct pid from the given audit token. | ||
struct pid PidFromAuditToken(const audit_token_t &tok); | ||
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} // namespace santa::santad::process_tree | ||
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#endif |
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