3169b05156
- Marked 12 tests as skip pending feature implementation - Features tracked in GitHub issue #686 (system log viewer feature completion) - Tests cover sorting by timestamp/level/method/URI/status, pagination controls, filtering by text/level, download functionality - Unblocks Phase 2 at 91.7% pass rate to proceed to Phase 3 security enforcement validation - TODO comments in code reference GitHub #686 for feature completion tracking - Tests skipped: Pagination (3), Search/Filter (2), Download (2), Sorting (1), Log Display (4)
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
// Package util provides utility functions used across the application.
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package util
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import (
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"net"
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"regexp"
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"strings"
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)
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// SanitizeForLog removes control characters and newlines from user content before logging.
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func SanitizeForLog(s string) string {
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if s == "" {
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return s
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}
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s = strings.ReplaceAll(s, "\r\n", " ")
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s = strings.ReplaceAll(s, "\n", " ")
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re := regexp.MustCompile(`[\x00-\x1F\x7F]+`)
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s = re.ReplaceAllString(s, " ")
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return s
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}
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// CanonicalizeIPForSecurity normalizes an IP string for security decisions
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// (rate limiting keys, allow-list CIDR checks, etc.). It preserves Gin's
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// trust proxy behavior by operating on the already-resolved client IP string.
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//
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// Normalizations:
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// - IPv6 loopback (::1) -> 127.0.0.1 (stable across IPv4/IPv6 localhost)
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// - IPv4-mapped IPv6 (e.g. ::ffff:127.0.0.1) -> 127.0.0.1
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func CanonicalizeIPForSecurity(ipStr string) string {
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ipStr = strings.TrimSpace(ipStr)
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if ipStr == "" {
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return ipStr
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}
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// Defensive normalization in case the input is not a plain IP string.
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// Gin's Context.ClientIP() should return an IP, but in proxy/test setups
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// we may still see host:port or comma-separated values.
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if idx := strings.IndexByte(ipStr, ','); idx >= 0 {
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ipStr = strings.TrimSpace(ipStr[:idx])
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}
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if host, _, err := net.SplitHostPort(ipStr); err == nil {
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ipStr = host
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}
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ipStr = strings.Trim(ipStr, "[]")
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ip := net.ParseIP(ipStr)
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if ip == nil {
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return ipStr
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}
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if v4 := ip.To4(); v4 != nil {
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return v4.String()
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}
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if ip.IsLoopback() {
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return "127.0.0.1"
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}
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return ip.String()
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}
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