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aa-log: improve log parsing and rendering.

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This commit is contained in:
Alexandre Pujol 2021-11-14 23:54:23 +00:00
parent ac2386957b
commit 5995defae6
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1 changed files with 51 additions and 40 deletions
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91
src/cmd/aa-log/main.go
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@ -26,13 +26,10 @@ const (
)
// AppArmorLog describes a apparmor log entry
type AppArmorLog struct {
State string
Profile string
Operation string
Name string
Content string
}
type AppArmorLog map[string]string
// AppArmorLogs describes all apparmor log entries
type AppArmorLogs []AppArmorLog
func removeDuplicateLog(logs []string) []string {
list := []string{}
@ -47,7 +44,7 @@ func removeDuplicateLog(logs []string) []string {
return list
}
func parseApparmorLogs(file *os.File, profile string) []AppArmorLog {
func NewApparmorLogs(file *os.File, profile string) AppArmorLogs {
log := ""
exp := fmt.Sprintf("^.*apparmor=(\"DENIED\"|\"ALLOWED\").* profile=\"%s.*\".*$", profile)
isAppArmorLog := regexp.MustCompile(exp)
@ -77,48 +74,62 @@ func parseApparmorLogs(file *os.File, profile string) []AppArmorLog {
logs = removeDuplicateLog(logs)
// Parse log into ApparmorLog struct
aaLogs := make([]AppArmorLog, 0)
getState := regexp.MustCompile(`apparmor=\"([A-Z]*)\"`)
getProfile := regexp.MustCompile(`profile=\"([A-Za-z0-9_.\-/]*)\" `)
getOperation := regexp.MustCompile(`operation="(\w+)"`)
getName := regexp.MustCompile(` name=([A-Za-z0-9_.\-/#"]*)`)
cleanContent := []*regexp.Regexp{getState, getProfile, getOperation, getName}
aaLogs := make(AppArmorLogs, 0)
for _, log := range logs {
name := ""
names := getName.FindStringSubmatch(log)
if len(names) >= 2 {
name = strings.Trim(names[1], `"`)
tmp := strings.Split(log, " ")
aa := make(AppArmorLog)
for _, item := range tmp {
kv := strings.Split(item, "=")
if len(kv) >= 2 {
aa[kv[0]] = strings.Trim(kv[1], `"`)
}
}
content := log
for _, clean := range cleanContent {
content = clean.ReplaceAllLiteralString(content, "")
}
aaLogs = append(aaLogs,
AppArmorLog{
State: getState.FindStringSubmatch(log)[1],
Profile: getProfile.FindStringSubmatch(log)[1],
Operation: getOperation.FindStringSubmatch(log)[1],
Name: name,
Content: content[2:],
})
aaLogs = append(aaLogs, aa)
}
return aaLogs
}
func printFormatedApparmorLogs(aaLogs []AppArmorLog) {
func (aaLogs AppArmorLogs) String() string {
res := ""
state := map[string]string{
"DENIED": BoldRed + "DENIED " + Reset,
"ALLOWED": BoldGreen + "ALLOWED" + Reset,
}
for _, log := range aaLogs {
fmt.Println(state[log.State],
FgBlue+log.Profile,
FgYellow+log.Operation,
FgMagenta+log.Name+Reset,
log.Content)
keys := []string{
"profile", "operation", "name", "info", "comm", "laddr",
"lport", "faddr", "fport", "family", "sock_type", "protocol",
"requested_mask", "denied_mask", // "fsuid", "ouid", "FSUID", "OUID",
}
colors := map[string]string{
"profile": FgBlue,
"operation": FgYellow,
"name": FgMagenta,
"requested_mask": "requested_mask=" + BoldRed,
"denied_mask": "denied_mask=" + BoldRed,
}
for _, log := range aaLogs {
res += state[log["apparmor"]]
delete(log, "apparmor")
for _, key := range keys {
if log[key] != "" {
if colors[key] != "" {
res += " " + colors[key] + log[key] + Reset
} else {
res += " " + key + "=" + log[key]
}
delete(log, key)
}
}
for key, value := range log {
res += " " + key + "=" + value
}
res += "\n"
}
return res
}
}
func main() {
@ -138,6 +149,6 @@ func main() {
}
}()
aaLogs := parseApparmorLogs(file, profile)
printFormatedApparmorLogs(aaLogs)
aaLogs := NewApparmorLogs(file, profile)
fmt.Print(aaLogs.String())
}