OkHostnameVerifier.smali
.class public final Lokhttp3/internal/tls/OkHostnameVerifier;
.super Ljava/lang/Object;
.source "OkHostnameVerifier.kt"
# interfaces
.implements Ljavax/net/ssl/HostnameVerifier;
# annotations
.annotation system Ldalvik/annotation/SourceDebugExtension;
value = "SMAP\nOkHostnameVerifier.kt\nKotlin\n*S Kotlin\n*F\n+ 1 OkHostnameVerifier.kt\nokhttp3/internal/tls/OkHostnameVerifier\n+ 2 _Collections.kt\nkotlin/collections/CollectionsKt___CollectionsKt\n*L\n1#1,184:1\n1499#2,3:185\n1499#2,3:188\n*E\n*S KotlinDebug\n*F\n+ 1 OkHostnameVerifier.kt\nokhttp3/internal/tls/OkHostnameVerifier\n*L\n54#1,3:185\n62#1,3:188\n*E\n"
.end annotation
.annotation runtime Lkotlin/Metadata;
bv = {
0x1,
0x0,
0x3
}
d1 = {
"\u00006\n\u0002\u0018\u0002\n\u0002\u0018\u0002\n\u0002\u0008\u0002\n\u0002\u0010\u0008\n\u0002\u0008\u0002\n\u0002\u0010 \n\u0002\u0010\u000e\n\u0000\n\u0002\u0018\u0002\n\u0002\u0008\u0003\n\u0002\u0010\u000b\n\u0002\u0008\u0002\n\u0002\u0018\u0002\n\u0002\u0008\u0006\u0008\u00c6\u0002\u0018\u00002\u00020\u0001B\u0007\u0008\u0002\u00a2\u0006\u0002\u0010\u0002J\u0014\u0010\u0006\u001a\u0008\u0012\u0004\u0012\u00020\u00080\u00072\u0006\u0010\t\u001a\u00020\nJ\u001e\u0010\u000b\u001a\u0008\u0012\u0004\u0012\u00020\u00080\u00072\u0006\u0010\t\u001a\u00020\n2\u0006\u0010\u000c\u001a\u00020\u0004H\u0002J\u0016\u0010\r\u001a\u00020\u000e2\u0006\u0010\u000f\u001a\u00020\u00082\u0006\u0010\t\u001a\u00020\nJ\u0018\u0010\r\u001a\u00020\u000e2\u0006\u0010\u000f\u001a\u00020\u00082\u0006\u0010\u0010\u001a\u00020\u0011H\u0016J\u0018\u0010\u0012\u001a\u00020\u000e2\u0006\u0010\u0013\u001a\u00020\u00082\u0006\u0010\t\u001a\u00020\nH\u0002J\u001c\u0010\u0012\u001a\u00020\u000e2\u0008\u0010\u0013\u001a\u0004\u0018\u00010\u00082\u0008\u0010\u0014\u001a\u0004\u0018\u00010\u0008H\u0002J\u0018\u0010\u0015\u001a\u00020\u000e2\u0006\u0010\u0016\u001a\u00020\u00082\u0006\u0010\t\u001a\u00020\nH\u0002R\u000e\u0010\u0003\u001a\u00020\u0004X\u0082T\u00a2\u0006\u0002\n\u0000R\u000e\u0010\u0005\u001a\u00020\u0004X\u0082T\u00a2\u0006\u0002\n\u0000\u00a8\u0006\u0017"
}
d2 = {
"Lokhttp3/internal/tls/OkHostnameVerifier;",
"Ljavax/net/ssl/HostnameVerifier;",
"()V",
"ALT_DNS_NAME",
"",
"ALT_IPA_NAME",
"allSubjectAltNames",
"",
"",
"certificate",
"Ljava/security/cert/X509Certificate;",
"getSubjectAltNames",
"type",
"verify",
"",
"host",
"session",
"Ljavax/net/ssl/SSLSession;",
"verifyHostname",
"hostname",
"pattern",
"verifyIpAddress",
"ipAddress",
"okhttp"
}
k = 0x1
mv = {
0x1,
0x1,
0x10
}
.end annotation
# static fields
.field private static final ALT_DNS_NAME:I = 0x2
.field private static final ALT_IPA_NAME:I = 0x7
.field public static final INSTANCE:Lokhttp3/internal/tls/OkHostnameVerifier;
# direct methods
.method static constructor <clinit>()V
.registers 1
.line 33
new-instance v0, Lokhttp3/internal/tls/OkHostnameVerifier;
invoke-direct {v0}, Lokhttp3/internal/tls/OkHostnameVerifier;-><init>()V
sput-object v0, Lokhttp3/internal/tls/OkHostnameVerifier;->INSTANCE:Lokhttp3/internal/tls/OkHostnameVerifier;
return-void
.end method
.method private constructor <init>()V
.registers 1
.line 33
invoke-direct {p0}, Ljava/lang/Object;-><init>()V
return-void
.end method
.method private final getSubjectAltNames(Ljava/security/cert/X509Certificate;I)Ljava/util/List;
.registers 7
.annotation system Ldalvik/annotation/Signature;
value = {
"(",
"Ljava/security/cert/X509Certificate;",
"I)",
"Ljava/util/List<",
"Ljava/lang/String;",
">;"
}
.end annotation
.line 170
:try_start_0
invoke-virtual {p1}, Ljava/security/cert/X509Certificate;->getSubjectAlternativeNames()Ljava/util/Collection;
move-result-object p1
if-eqz p1, :cond_50
.line 171
new-instance v0, Ljava/util/ArrayList;
invoke-direct {v0}, Ljava/util/ArrayList;-><init>()V
check-cast v0, Ljava/util/List;
.line 172
invoke-interface {p1}, Ljava/util/Collection;->iterator()Ljava/util/Iterator;
move-result-object p1
:cond_11
:goto_11
invoke-interface {p1}, Ljava/util/Iterator;->hasNext()Z
move-result v1
if-eqz v1, :cond_4f
invoke-interface {p1}, Ljava/util/Iterator;->next()Ljava/lang/Object;
move-result-object v1
check-cast v1, Ljava/util/List;
if-eqz v1, :cond_11
.line 173
invoke-interface {v1}, Ljava/util/List;->size()I
move-result v2
const/4 v3, 0x2
if-ge v2, v3, :cond_27
goto :goto_11
:cond_27
const/4 v2, 0x0
.line 174
invoke-interface {v1, v2}, Ljava/util/List;->get(I)Ljava/lang/Object;
move-result-object v2
invoke-static {p2}, Ljava/lang/Integer;->valueOf(I)Ljava/lang/Integer;
move-result-object v3
invoke-static {v2, v3}, Lkotlin/jvm/internal/Intrinsics;->areEqual(Ljava/lang/Object;Ljava/lang/Object;)Z
move-result v2
const/4 v3, 0x1
xor-int/2addr v2, v3
if-eqz v2, :cond_39
goto :goto_11
.line 175
:cond_39
invoke-interface {v1, v3}, Ljava/util/List;->get(I)Ljava/lang/Object;
move-result-object v1
if-eqz v1, :cond_11
if-eqz v1, :cond_47
.line 176
check-cast v1, Ljava/lang/String;
invoke-interface {v0, v1}, Ljava/util/List;->add(Ljava/lang/Object;)Z
goto :goto_11
:cond_47
new-instance p1, Lkotlin/TypeCastException;
const-string p2, "null cannot be cast to non-null type kotlin.String"
invoke-direct {p1, p2}, Lkotlin/TypeCastException;-><init>(Ljava/lang/String;)V
throw p1
:cond_4f
return-object v0
.line 170
:cond_50
invoke-static {}, Lkotlin/collections/CollectionsKt;->emptyList()Ljava/util/List;
move-result-object p1
:try_end_54
.catch Ljava/security/cert/CertificateParsingException; {:try_start_0 .. :try_end_54} :catch_55
return-object p1
.line 180
:catch_55
invoke-static {}, Lkotlin/collections/CollectionsKt;->emptyList()Ljava/util/List;
move-result-object p1
return-object p1
.end method
.method private final verifyHostname(Ljava/lang/String;Ljava/lang/String;)Z
.registers 19
move-object/from16 v0, p1
move-object/from16 v1, p2
.line 78
move-object v2, v0
check-cast v2, Ljava/lang/CharSequence;
const/4 v3, 0x1
const/4 v4, 0x0
if-eqz v2, :cond_14
invoke-interface {v2}, Ljava/lang/CharSequence;->length()I
move-result v2
if-nez v2, :cond_12
goto :goto_14
:cond_12
const/4 v2, 0x0
goto :goto_15
:cond_14
:goto_14
const/4 v2, 0x1
:goto_15
if-nez v2, :cond_fe
const-string v2, "."
const/4 v5, 0x2
const/4 v6, 0x0
.line 79
invoke-static {v0, v2, v4, v5, v6}, Lkotlin/text/StringsKt;->startsWith$default(Ljava/lang/String;Ljava/lang/String;ZILjava/lang/Object;)Z
move-result v7
if-nez v7, :cond_fe
const-string v7, ".."
.line 80
invoke-static {v0, v7, v4, v5, v6}, Lkotlin/text/StringsKt;->endsWith$default(Ljava/lang/String;Ljava/lang/String;ZILjava/lang/Object;)Z
move-result v8
if-eqz v8, :cond_2b
goto/16 :goto_fe
.line 84
:cond_2b
move-object v8, v1
check-cast v8, Ljava/lang/CharSequence;
if-eqz v8, :cond_39
invoke-interface {v8}, Ljava/lang/CharSequence;->length()I
move-result v8
if-nez v8, :cond_37
goto :goto_39
:cond_37
const/4 v8, 0x0
goto :goto_3a
:cond_39
:goto_39
const/4 v8, 0x1
:goto_3a
if-nez v8, :cond_fe
.line 85
invoke-static {v1, v2, v4, v5, v6}, Lkotlin/text/StringsKt;->startsWith$default(Ljava/lang/String;Ljava/lang/String;ZILjava/lang/Object;)Z
move-result v8
if-nez v8, :cond_fe
.line 86
invoke-static {v1, v7, v4, v5, v6}, Lkotlin/text/StringsKt;->endsWith$default(Ljava/lang/String;Ljava/lang/String;ZILjava/lang/Object;)Z
move-result v7
if-eqz v7, :cond_4a
goto/16 :goto_fe
.line 100
:cond_4a
invoke-static {v0, v2, v4, v5, v6}, Lkotlin/text/StringsKt;->endsWith$default(Ljava/lang/String;Ljava/lang/String;ZILjava/lang/Object;)Z
move-result v7
if-nez v7, :cond_5f
.line 101
new-instance v7, Ljava/lang/StringBuilder;
invoke-direct {v7}, Ljava/lang/StringBuilder;-><init>()V
invoke-virtual {v7, v0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invoke-virtual {v7, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invoke-virtual {v7}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;
move-result-object v0
.line 103
:cond_5f
invoke-static {v1, v2, v4, v5, v6}, Lkotlin/text/StringsKt;->endsWith$default(Ljava/lang/String;Ljava/lang/String;ZILjava/lang/Object;)Z
move-result v7
if-nez v7, :cond_74
.line 104
new-instance v7, Ljava/lang/StringBuilder;
invoke-direct {v7}, Ljava/lang/StringBuilder;-><init>()V
invoke-virtual {v7, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invoke-virtual {v7, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invoke-virtual {v7}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;
move-result-object v1
.line 108
:cond_74
sget-object v2, Ljava/util/Locale;->US:Ljava/util/Locale;
const-string v7, "Locale.US"
invoke-static {v2, v7}, Lkotlin/jvm/internal/Intrinsics;->checkExpressionValueIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
const-string v7, "null cannot be cast to non-null type java.lang.String"
if-eqz v1, :cond_f8
invoke-virtual {v1, v2}, Ljava/lang/String;->toLowerCase(Ljava/util/Locale;)Ljava/lang/String;
move-result-object v1
const-string v2, "(this as java.lang.String).toLowerCase(locale)"
invoke-static {v1, v2}, Lkotlin/jvm/internal/Intrinsics;->checkExpressionValueIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
.line 111
move-object v8, v1
check-cast v8, Ljava/lang/CharSequence;
const-string v2, "*"
check-cast v2, Ljava/lang/CharSequence;
invoke-static {v8, v2, v4, v5, v6}, Lkotlin/text/StringsKt;->contains$default(Ljava/lang/CharSequence;Ljava/lang/CharSequence;ZILjava/lang/Object;)Z
move-result v2
if-nez v2, :cond_9a
.line 113
invoke-static {v0, v1}, Lkotlin/jvm/internal/Intrinsics;->areEqual(Ljava/lang/Object;Ljava/lang/Object;)Z
move-result v0
return v0
:cond_9a
const-string v2, "*."
.line 128
invoke-static {v1, v2, v4, v5, v6}, Lkotlin/text/StringsKt;->startsWith$default(Ljava/lang/String;Ljava/lang/String;ZILjava/lang/Object;)Z
move-result v9
if-eqz v9, :cond_f7
const/16 v9, 0x2a
const/4 v10, 0x1
const/4 v11, 0x0
const/4 v12, 0x4
const/4 v13, 0x0
invoke-static/range {v8 .. v13}, Lkotlin/text/StringsKt;->indexOf$default(Ljava/lang/CharSequence;CIZILjava/lang/Object;)I
move-result v8
const/4 v9, -0x1
if-eq v8, v9, :cond_b0
goto :goto_f7
.line 137
:cond_b0
invoke-virtual {v0}, Ljava/lang/String;->length()I
move-result v8
invoke-virtual {v1}, Ljava/lang/String;->length()I
move-result v10
if-ge v8, v10, :cond_bb
return v4
.line 141
:cond_bb
invoke-static {v2, v1}, Lkotlin/jvm/internal/Intrinsics;->areEqual(Ljava/lang/Object;Ljava/lang/Object;)Z
move-result v2
if-eqz v2, :cond_c2
return v4
:cond_c2
if-eqz v1, :cond_f1
.line 146
invoke-virtual {v1, v3}, Ljava/lang/String;->substring(I)Ljava/lang/String;
move-result-object v1
const-string v2, "(this as java.lang.String).substring(startIndex)"
invoke-static {v1, v2}, Lkotlin/jvm/internal/Intrinsics;->checkExpressionValueIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
.line 147
invoke-static {v0, v1, v4, v5, v6}, Lkotlin/text/StringsKt;->endsWith$default(Ljava/lang/String;Ljava/lang/String;ZILjava/lang/Object;)Z
move-result v2
if-nez v2, :cond_d4
return v4
.line 152
:cond_d4
invoke-virtual {v0}, Ljava/lang/String;->length()I
move-result v2
invoke-virtual {v1}, Ljava/lang/String;->length()I
move-result v1
sub-int/2addr v2, v1
if-lez v2, :cond_f0
.line 154
move-object v10, v0
check-cast v10, Ljava/lang/CharSequence;
const/16 v11, 0x2e
add-int/lit8 v12, v2, -0x1
const/4 v13, 0x0
const/4 v14, 0x4
const/4 v15, 0x0
invoke-static/range {v10 .. v15}, Lkotlin/text/StringsKt;->lastIndexOf$default(Ljava/lang/CharSequence;CIZILjava/lang/Object;)I
move-result v0
if-eq v0, v9, :cond_f0
return v4
:cond_f0
return v3
.line 146
:cond_f1
new-instance v0, Lkotlin/TypeCastException;
invoke-direct {v0, v7}, Lkotlin/TypeCastException;-><init>(Ljava/lang/String;)V
throw v0
:cond_f7
:goto_f7
return v4
.line 108
:cond_f8
new-instance v0, Lkotlin/TypeCastException;
invoke-direct {v0, v7}, Lkotlin/TypeCastException;-><init>(Ljava/lang/String;)V
throw v0
:cond_fe
:goto_fe
return v4
.end method
.method private final verifyHostname(Ljava/lang/String;Ljava/security/cert/X509Certificate;)Z
.registers 6
.line 61
sget-object v0, Ljava/util/Locale;->US:Ljava/util/Locale;
const-string v1, "Locale.US"
invoke-static {v0, v1}, Lkotlin/jvm/internal/Intrinsics;->checkExpressionValueIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
if-eqz p1, :cond_42
invoke-virtual {p1, v0}, Ljava/lang/String;->toLowerCase(Ljava/util/Locale;)Ljava/lang/String;
move-result-object p1
const-string v0, "(this as java.lang.String).toLowerCase(locale)"
invoke-static {p1, v0}, Lkotlin/jvm/internal/Intrinsics;->checkExpressionValueIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
const/4 v0, 0x2
.line 62
invoke-direct {p0, p2, v0}, Lokhttp3/internal/tls/OkHostnameVerifier;->getSubjectAltNames(Ljava/security/cert/X509Certificate;I)Ljava/util/List;
move-result-object p2
check-cast p2, Ljava/lang/Iterable;
.line 188
instance-of v0, p2, Ljava/util/Collection;
const/4 v1, 0x0
if-eqz v0, :cond_28
move-object v0, p2
check-cast v0, Ljava/util/Collection;
invoke-interface {v0}, Ljava/util/Collection;->isEmpty()Z
move-result v0
if-eqz v0, :cond_28
goto :goto_41
.line 189
:cond_28
invoke-interface {p2}, Ljava/lang/Iterable;->iterator()Ljava/util/Iterator;
move-result-object p2
:cond_2c
invoke-interface {p2}, Ljava/util/Iterator;->hasNext()Z
move-result v0
if-eqz v0, :cond_41
invoke-interface {p2}, Ljava/util/Iterator;->next()Ljava/lang/Object;
move-result-object v0
check-cast v0, Ljava/lang/String;
.line 63
sget-object v2, Lokhttp3/internal/tls/OkHostnameVerifier;->INSTANCE:Lokhttp3/internal/tls/OkHostnameVerifier;
invoke-direct {v2, p1, v0}, Lokhttp3/internal/tls/OkHostnameVerifier;->verifyHostname(Ljava/lang/String;Ljava/lang/String;)Z
move-result v0
if-eqz v0, :cond_2c
const/4 v1, 0x1
:cond_41
:goto_41
return v1
.line 61
:cond_42
new-instance p1, Lkotlin/TypeCastException;
const-string p2, "null cannot be cast to non-null type java.lang.String"
invoke-direct {p1, p2}, Lkotlin/TypeCastException;-><init>(Ljava/lang/String;)V
throw p1
.end method
.method private final verifyIpAddress(Ljava/lang/String;Ljava/security/cert/X509Certificate;)Z
.registers 6
const/4 v0, 0x7
.line 54
invoke-direct {p0, p2, v0}, Lokhttp3/internal/tls/OkHostnameVerifier;->getSubjectAltNames(Ljava/security/cert/X509Certificate;I)Ljava/util/List;
move-result-object p2
check-cast p2, Ljava/lang/Iterable;
.line 185
instance-of v0, p2, Ljava/util/Collection;
const/4 v1, 0x1
const/4 v2, 0x0
if-eqz v0, :cond_18
move-object v0, p2
check-cast v0, Ljava/util/Collection;
invoke-interface {v0}, Ljava/util/Collection;->isEmpty()Z
move-result v0
if-eqz v0, :cond_18
:cond_16
const/4 v1, 0x0
goto :goto_2e
.line 186
:cond_18
invoke-interface {p2}, Ljava/lang/Iterable;->iterator()Ljava/util/Iterator;
move-result-object p2
:cond_1c
invoke-interface {p2}, Ljava/util/Iterator;->hasNext()Z
move-result v0
if-eqz v0, :cond_16
invoke-interface {p2}, Ljava/util/Iterator;->next()Ljava/lang/Object;
move-result-object v0
check-cast v0, Ljava/lang/String;
.line 55
invoke-static {p1, v0, v1}, Lkotlin/text/StringsKt;->equals(Ljava/lang/String;Ljava/lang/String;Z)Z
move-result v0
if-eqz v0, :cond_1c
:goto_2e
return v1
.end method
# virtual methods
.method public final allSubjectAltNames(Ljava/security/cert/X509Certificate;)Ljava/util/List;
.registers 4
.annotation system Ldalvik/annotation/Signature;
value = {
"(",
"Ljava/security/cert/X509Certificate;",
")",
"Ljava/util/List<",
"Ljava/lang/String;",
">;"
}
.end annotation
const-string v0, "certificate"
invoke-static {p1, v0}, Lkotlin/jvm/internal/Intrinsics;->checkParameterIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
const/4 v0, 0x7
.line 163
invoke-direct {p0, p1, v0}, Lokhttp3/internal/tls/OkHostnameVerifier;->getSubjectAltNames(Ljava/security/cert/X509Certificate;I)Ljava/util/List;
move-result-object v0
const/4 v1, 0x2
.line 164
invoke-direct {p0, p1, v1}, Lokhttp3/internal/tls/OkHostnameVerifier;->getSubjectAltNames(Ljava/security/cert/X509Certificate;I)Ljava/util/List;
move-result-object p1
.line 165
check-cast v0, Ljava/util/Collection;
check-cast p1, Ljava/lang/Iterable;
invoke-static {v0, p1}, Lkotlin/collections/CollectionsKt;->plus(Ljava/util/Collection;Ljava/lang/Iterable;)Ljava/util/List;
move-result-object p1
return-object p1
.end method
.method public final verify(Ljava/lang/String;Ljava/security/cert/X509Certificate;)Z
.registers 4
const-string v0, "host"
invoke-static {p1, v0}, Lkotlin/jvm/internal/Intrinsics;->checkParameterIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
const-string v0, "certificate"
invoke-static {p2, v0}, Lkotlin/jvm/internal/Intrinsics;->checkParameterIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
.line 47
invoke-static {p1}, Lokhttp3/internal/Util;->canParseAsIpAddress(Ljava/lang/String;)Z
move-result v0
if-eqz v0, :cond_15
invoke-direct {p0, p1, p2}, Lokhttp3/internal/tls/OkHostnameVerifier;->verifyIpAddress(Ljava/lang/String;Ljava/security/cert/X509Certificate;)Z
move-result p1
goto :goto_19
.line 48
:cond_15
invoke-direct {p0, p1, p2}, Lokhttp3/internal/tls/OkHostnameVerifier;->verifyHostname(Ljava/lang/String;Ljava/security/cert/X509Certificate;)Z
move-result p1
:goto_19
return p1
.end method
.method public verify(Ljava/lang/String;Ljavax/net/ssl/SSLSession;)Z
.registers 4
const-string v0, "host"
invoke-static {p1, v0}, Lkotlin/jvm/internal/Intrinsics;->checkParameterIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
const-string v0, "session"
invoke-static {p2, v0}, Lkotlin/jvm/internal/Intrinsics;->checkParameterIsNotNull(Ljava/lang/Object;Ljava/lang/String;)V
const/4 v0, 0x0
.line 39
:try_start_b
invoke-interface {p2}, Ljavax/net/ssl/SSLSession;->getPeerCertificates()[Ljava/security/cert/Certificate;
move-result-object p2
aget-object p2, p2, v0
if-eqz p2, :cond_1a
check-cast p2, Ljava/security/cert/X509Certificate;
invoke-virtual {p0, p1, p2}, Lokhttp3/internal/tls/OkHostnameVerifier;->verify(Ljava/lang/String;Ljava/security/cert/X509Certificate;)Z
move-result v0
goto :goto_22
:cond_1a
new-instance p1, Lkotlin/TypeCastException;
const-string p2, "null cannot be cast to non-null type java.security.cert.X509Certificate"
invoke-direct {p1, p2}, Lkotlin/TypeCastException;-><init>(Ljava/lang/String;)V
throw p1
:try_end_22
.catch Ljavax/net/ssl/SSLException; {:try_start_b .. :try_end_22} :catch_22
:catch_22
:goto_22
return v0
.end method