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|
package influxql
import (
"bytes"
"regexp"
)
var (
sanitizeSetPassword = regexp.MustCompile(`(?i)password\s+for[^=]*=\s+(["']?[^\s"]+["']?)`)
sanitizeCreatePassword = regexp.MustCompile(`(?i)with\s+password\s+(["']?[^\s"]+["']?)`)
)
// Sanitize attempts to sanitize passwords out of a raw query.
// It looks for patterns that may be related to the SET PASSWORD and CREATE USER
// statements and will redact the password that should be there. It will attempt
// to redact information from common invalid queries too, but it's not guaranteed
// to succeed on improper queries.
//
// This function works on the raw query and attempts to retain the original input
// as much as possible.
func Sanitize(query string) string {
if matches := sanitizeSetPassword.FindAllStringSubmatchIndex(query, -1); matches != nil {
var buf bytes.Buffer
i := 0
for _, match := range matches {
buf.WriteString(query[i:match[2]])
buf.WriteString("[REDACTED]")
i = match[3]
}
buf.WriteString(query[i:])
query = buf.String()
}
if matches := sanitizeCreatePassword.FindAllStringSubmatchIndex(query, -1); matches != nil {
var buf bytes.Buffer
i := 0
for _, match := range matches {
buf.WriteString(query[i:match[2]])
buf.WriteString("[REDACTED]")
i = match[3]
}
buf.WriteString(query[i:])
query = buf.String()
}
return query
}
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