Move profile fingerprints to separate package

profile/fingerprint/fingerprint.go

@@ -0,0 +1,49 @@
+package profile
+
+var (
+	fingerprintWeights = map[string]int{
+		"full_path":    2,
+		"partial_path": 1,
+		"md5_sum":      4,
+		"sha1_sum":     5,
+		"sha256_sum":   6,
+	}
+)
+
+// Fingerprint links processes to profiles.
+type Fingerprint struct {
+	OS       string
+	Type     string
+	Value    string
+	Comment  string
+	LastUsed int64
+}
+
+// MatchesOS returns whether the Fingerprint is applicable for the current OS.
+func (fp *Fingerprint) MatchesOS() bool {
+	return fp.OS == osIdentifier
+}
+
+// GetFingerprintWeight returns the weight of the given fingerprint type.
+func GetFingerprintWeight(fpType string) (weight int) {
+	weight, ok := fingerprintWeights[fpType]
+	if ok {
+		return weight
+	}
+	return 0
+}
+
+// TODO: move to profile
+/*
+// AddFingerprint adds the given fingerprint to the profile.
+func (profile *Profile) AddFingerprint(fp *Fingerprint) {
+	if fp.OS == "" {
+		fp.OS = osIdentifier
+	}
+	if fp.LastUsed == 0 {
+		fp.LastUsed = time.Now().Unix()
+	}
+
+	profile.Fingerprints = append(profile.Fingerprints, fp)
+}
+*/