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processes.go
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processes.go
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package controlplane
import (
"github.com/aquasecurity/tracee/pkg/events/parse"
"github.com/aquasecurity/tracee/pkg/proctree"
"github.com/aquasecurity/tracee/pkg/utils"
"github.com/aquasecurity/tracee/types/trace"
)
//
// Processes Lifecycle (will feed the process tree)
//
func (ctrl *Controller) procTreeForkProcessor(args []trace.Argument) error {
var errs []error
if ctrl.processTree == nil {
return nil // process tree is disabled
}
// NOTE: The "parent" related arguments can be ignored for process tree purposes.
// Process & Event identification arguments
timestamp, err := parse.ArgVal[uint64](args, "timestamp")
errs = append(errs, err)
// Up Parent (Up in hierarchy until parent is a process and not a lwp)
parentTid, err := parse.ArgVal[int32](args, "up_parent_tid")
errs = append(errs, err)
parentNsTid, err := parse.ArgVal[int32](args, "up_parent_ns_tid")
errs = append(errs, err)
parentPid, err := parse.ArgVal[int32](args, "up_parent_pid")
errs = append(errs, err)
parentNsPid, err := parse.ArgVal[int32](args, "up_parent_ns_pid")
errs = append(errs, err)
parentStartTime, err := parse.ArgVal[uint64](args, "up_parent_start_time")
errs = append(errs, err)
// Thread Group Leader (might be the same as the "child", if "child" is a process)
leaderTid, err := parse.ArgVal[int32](args, "leader_tid")
errs = append(errs, err)
leaderNsTid, err := parse.ArgVal[int32](args, "leader_ns_tid")
errs = append(errs, err)
leaderPid, err := parse.ArgVal[int32](args, "leader_pid")
errs = append(errs, err)
leaderNsPid, err := parse.ArgVal[int32](args, "leader_ns_pid")
errs = append(errs, err)
leaderStartTime, err := parse.ArgVal[uint64](args, "leader_start_time")
errs = append(errs, err)
// Child (might be a process or a thread)
childTid, err := parse.ArgVal[int32](args, "child_tid")
errs = append(errs, err)
childNsTid, err := parse.ArgVal[int32](args, "child_ns_tid")
errs = append(errs, err)
childPid, err := parse.ArgVal[int32](args, "child_pid")
errs = append(errs, err)
childNsPid, err := parse.ArgVal[int32](args, "child_ns_pid")
errs = append(errs, err)
childStartTime, err := parse.ArgVal[uint64](args, "start_time") // child_start_time
errs = append(errs, err)
// Handle errors
for _, err := range errs {
if err != nil {
return err
}
}
childHash := utils.HashTaskID(uint32(childTid), childStartTime)
parentHash := utils.HashTaskID(uint32(parentTid), parentStartTime)
leaderHash := utils.HashTaskID(uint32(leaderTid), leaderStartTime)
return ctrl.processTree.FeedFromFork(
proctree.ForkFeed{
TimeStamp: timestamp,
ChildHash: childHash,
ParentHash: parentHash,
LeaderHash: leaderHash,
ParentTid: parentTid,
ParentNsTid: parentNsTid,
ParentPid: parentPid,
ParentNsPid: parentNsPid,
ParentStartTime: parentStartTime,
LeaderTid: leaderTid,
LeaderNsTid: leaderNsTid,
LeaderPid: leaderPid,
LeaderNsPid: leaderNsPid,
LeaderStartTime: leaderStartTime,
ChildTid: childTid,
ChildNsTid: childNsTid,
ChildPid: childPid,
ChildNsPid: childNsPid,
ChildStartTime: childStartTime,
},
)
}
func (ctrl *Controller) procTreeExecProcessor(args []trace.Argument) error {
var errs []error
if ctrl.processTree == nil {
return nil // process tree is disabled
}
// Process & Event identification arguments (won't exist for regular events)
timestamp, err := parse.ArgVal[uint64](args, "timestamp")
errs = append(errs, err)
taskHash, _ := parse.ArgVal[uint32](args, "task_hash")
errs = append(errs, err)
parentHash, _ := parse.ArgVal[uint32](args, "parent_hash")
errs = append(errs, err)
leaderHash, _ := parse.ArgVal[uint32](args, "leader_hash")
errs = append(errs, err)
// Executable
cmdPath, err := parse.ArgVal[string](args, "cmdpath")
errs = append(errs, err)
pathName, err := parse.ArgVal[string](args, "pathname")
errs = append(errs, err)
dev, err := parse.ArgVal[uint32](args, "dev")
errs = append(errs, err)
inode, err := parse.ArgVal[uint64](args, "inode")
errs = append(errs, err)
ctime, err := parse.ArgVal[uint64](args, "ctime")
errs = append(errs, err)
inodeMode, err := parse.ArgVal[uint16](args, "inode_mode")
errs = append(errs, err)
// Binary Interpreter (or Loader): might come empty from the kernel
interPathName, _ := parse.ArgVal[string](args, "interpreter_pathname")
interDev, _ := parse.ArgVal[uint32](args, "interpreter_dev")
interInode, _ := parse.ArgVal[uint64](args, "interpreter_inode")
interCtime, _ := parse.ArgVal[uint64](args, "interpreter_ctime")
// Real Interpreter
interp, err := parse.ArgVal[string](args, "interp")
errs = append(errs, err)
// Others
stdinType, err := parse.ArgVal[uint16](args, "stdin_type")
errs = append(errs, err)
stdinPath, err := parse.ArgVal[string](args, "stdin_path")
errs = append(errs, err)
invokedFromKernel, err := parse.ArgVal[int32](args, "invoked_from_kernel")
errs = append(errs, err)
// Handle errors
for _, err := range errs {
if err != nil {
return err
}
}
return ctrl.processTree.FeedFromExec(
proctree.ExecFeed{
TimeStamp: timestamp,
TaskHash: taskHash,
ParentHash: parentHash,
LeaderHash: leaderHash,
CmdPath: cmdPath,
PathName: pathName,
Dev: dev,
Inode: inode,
Ctime: ctime,
InodeMode: inodeMode,
InterpreterPath: interPathName,
InterpreterDev: interDev,
InterpreterInode: interInode,
InterpreterCtime: interCtime,
Interp: interp,
StdinType: stdinType,
StdinPath: stdinPath,
InvokedFromKernel: invokedFromKernel,
},
)
}
func (ctrl *Controller) procTreeExitProcessor(args []trace.Argument) error {
var errs []error
if ctrl.processTree == nil {
return nil // process tree is disabled
}
// Process & Event identification arguments (won't exist for regular events)
timestamp, err := parse.ArgVal[uint64](args, "timestamp")
errs = append(errs, err)
taskHash, err := parse.ArgVal[uint32](args, "task_hash")
errs = append(errs, err)
parentHash, err := parse.ArgVal[uint32](args, "parent_hash")
errs = append(errs, err)
leaderHash, err := parse.ArgVal[uint32](args, "leader_hash")
errs = append(errs, err)
// Exit logic arguments
exitCode, err := parse.ArgVal[int64](args, "exit_code")
errs = append(errs, err)
groupExit, err := parse.ArgVal[bool](args, "process_group_exit")
errs = append(errs, err)
// Handle errors
for _, err := range errs {
if err != nil {
return err
}
}
return ctrl.processTree.FeedFromExit(
proctree.ExitFeed{
TimeStamp: timestamp, // time of exit is already a timestamp
TaskHash: taskHash,
ParentHash: parentHash,
LeaderHash: leaderHash,
ExitCode: exitCode,
Group: groupExit,
},
)
}