.class final Lcom/meituan/android/walle/ApkUtil;
.super Ljava/lang/Object;
.source "ApkUtil.java"


# static fields
.field public static final ANDROID_COMMON_PAGE_ALIGNMENT_BYTES:I = 0x1000

.field public static final APK_CHANNEL_BLOCK_ID:I = 0x71777777

.field public static final APK_SIGNATURE_SCHEME_V2_BLOCK_ID:I = 0x7109871a

.field public static final APK_SIG_BLOCK_MAGIC_HI:J = 0x3234206b636f6c42L

.field public static final APK_SIG_BLOCK_MAGIC_LO:J = 0x20676953204b5041L

.field private static final APK_SIG_BLOCK_MIN_SIZE:I = 0x20

.field public static final DEFAULT_CHARSET:Ljava/lang/String; = "UTF-8"

.field private static final UINT16_MAX_VALUE:I = 0xffff

.field public static final VERITY_PADDING_BLOCK_ID:I = 0x42726577

.field private static final ZIP_EOCD_COMMENT_LENGTH_FIELD_OFFSET:I = 0x14

.field private static final ZIP_EOCD_REC_MIN_SIZE:I = 0x16

.field private static final ZIP_EOCD_REC_SIG:I = 0x6054b50


# direct methods
.method private constructor <init>()V
    .locals 0

    .line 13
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method private static checkByteOrderLittleEndian(Ljava/nio/ByteBuffer;)V
    .locals 1

    .line 300
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->order()Ljava/nio/ByteOrder;

    move-result-object p0

    sget-object v0, Ljava/nio/ByteOrder;->LITTLE_ENDIAN:Ljava/nio/ByteOrder;

    if-ne p0, v0, :cond_0

    return-void

    .line 301
    :cond_0
    new-instance p0, Ljava/lang/IllegalArgumentException;

    const-string v0, "ByteBuffer byte order must be little endian"

    invoke-direct {p0, v0}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw p0
.end method

.method public static findApkSigningBlock(Ljava/nio/channels/FileChannel;)Lcom/meituan/android/walle/Pair;
    .locals 2
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Ljava/nio/channels/FileChannel;",
            ")",
            "Lcom/meituan/android/walle/Pair<",
            "Ljava/nio/ByteBuffer;",
            "Ljava/lang/Long;",
            ">;"
        }
    .end annotation

    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;,
            Lcom/meituan/android/walle/SignatureNotFoundException;
        }
    .end annotation

    .line 135
    invoke-static {p0}, Lcom/meituan/android/walle/ApkUtil;->findCentralDirStartOffset(Ljava/nio/channels/FileChannel;)J

    move-result-wide v0

    .line 136
    invoke-static {p0, v0, v1}, Lcom/meituan/android/walle/ApkUtil;->findApkSigningBlock(Ljava/nio/channels/FileChannel;J)Lcom/meituan/android/walle/Pair;

    move-result-object p0

    return-object p0
.end method

.method public static findApkSigningBlock(Ljava/nio/channels/FileChannel;J)Lcom/meituan/android/walle/Pair;
    .locals 6
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Ljava/nio/channels/FileChannel;",
            "J)",
            "Lcom/meituan/android/walle/Pair<",
            "Ljava/nio/ByteBuffer;",
            "Ljava/lang/Long;",
            ">;"
        }
    .end annotation

    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;,
            Lcom/meituan/android/walle/SignatureNotFoundException;
        }
    .end annotation

    const-wide/16 v0, 0x20

    cmp-long v0, p1, v0

    if-ltz v0, :cond_4

    const-wide/16 v0, 0x18

    sub-long v0, p1, v0

    .line 159
    invoke-virtual {p0, v0, v1}, Ljava/nio/channels/FileChannel;->position(J)Ljava/nio/channels/FileChannel;

    const/16 v0, 0x18

    .line 160
    invoke-static {v0}, Ljava/nio/ByteBuffer;->allocate(I)Ljava/nio/ByteBuffer;

    move-result-object v0

    .line 161
    invoke-virtual {p0, v0}, Ljava/nio/channels/FileChannel;->read(Ljava/nio/ByteBuffer;)I

    .line 162
    sget-object v1, Ljava/nio/ByteOrder;->LITTLE_ENDIAN:Ljava/nio/ByteOrder;

    invoke-virtual {v0, v1}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;

    const/16 v1, 0x8

    .line 163
    invoke-virtual {v0, v1}, Ljava/nio/ByteBuffer;->getLong(I)J

    move-result-wide v1

    const-wide v3, 0x20676953204b5041L

    cmp-long v1, v1, v3

    if-nez v1, :cond_3

    const/16 v1, 0x10

    .line 164
    invoke-virtual {v0, v1}, Ljava/nio/ByteBuffer;->getLong(I)J

    move-result-wide v1

    const-wide v3, 0x3234206b636f6c42L    # 7.465385175170059E-67

    cmp-long v1, v1, v3

    if-nez v1, :cond_3

    const/4 v1, 0x0

    .line 169
    invoke-virtual {v0, v1}, Ljava/nio/ByteBuffer;->getLong(I)J

    move-result-wide v2

    .line 170
    invoke-virtual {v0}, Ljava/nio/ByteBuffer;->capacity()I

    move-result v0

    int-to-long v4, v0

    cmp-long v0, v2, v4

    if-ltz v0, :cond_2

    const-wide/32 v4, 0x7ffffff7

    cmp-long v0, v2, v4

    if-gtz v0, :cond_2

    const-wide/16 v4, 0x8

    add-long/2addr v4, v2

    long-to-int v0, v4

    int-to-long v4, v0

    sub-long/2addr p1, v4

    const-wide/16 v4, 0x0

    cmp-long v4, p1, v4

    if-ltz v4, :cond_1

    .line 181
    invoke-virtual {p0, p1, p2}, Ljava/nio/channels/FileChannel;->position(J)Ljava/nio/channels/FileChannel;

    .line 182
    invoke-static {v0}, Ljava/nio/ByteBuffer;->allocate(I)Ljava/nio/ByteBuffer;

    move-result-object v0

    .line 183
    invoke-virtual {p0, v0}, Ljava/nio/channels/FileChannel;->read(Ljava/nio/ByteBuffer;)I

    .line 184
    sget-object p0, Ljava/nio/ByteOrder;->LITTLE_ENDIAN:Ljava/nio/ByteOrder;

    invoke-virtual {v0, p0}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;

    .line 185
    invoke-virtual {v0, v1}, Ljava/nio/ByteBuffer;->getLong(I)J

    move-result-wide v4

    cmp-long p0, v4, v2

    if-nez p0, :cond_0

    .line 191
    invoke-static {p1, p2}, Ljava/lang/Long;->valueOf(J)Ljava/lang/Long;

    move-result-object p0

    invoke-static {v0, p0}, Lcom/meituan/android/walle/Pair;->of(Ljava/lang/Object;Ljava/lang/Object;)Lcom/meituan/android/walle/Pair;

    move-result-object p0

    return-object p0

    .line 187
    :cond_0
    new-instance p0, Lcom/meituan/android/walle/SignatureNotFoundException;

    new-instance p1, Ljava/lang/StringBuilder;

    invoke-direct {p1}, Ljava/lang/StringBuilder;-><init>()V

    const-string p2, "APK Signing Block sizes in header and footer do not match: "

    invoke-virtual {p1, p2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p1, v4, v5}, Ljava/lang/StringBuilder;->append(J)Ljava/lang/StringBuilder;

    const-string p2, " vs "

    invoke-virtual {p1, p2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p1, v2, v3}, Ljava/lang/StringBuilder;->append(J)Ljava/lang/StringBuilder;

    invoke-virtual {p1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p0, p1}, Lcom/meituan/android/walle/SignatureNotFoundException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 178
    :cond_1
    new-instance p0, Lcom/meituan/android/walle/SignatureNotFoundException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "APK Signing Block offset out of range: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, p1, p2}, Ljava/lang/StringBuilder;->append(J)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p0, p1}, Lcom/meituan/android/walle/SignatureNotFoundException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 172
    :cond_2
    new-instance p0, Lcom/meituan/android/walle/SignatureNotFoundException;

    new-instance p1, Ljava/lang/StringBuilder;

    invoke-direct {p1}, Ljava/lang/StringBuilder;-><init>()V

    const-string p2, "APK Signing Block size out of range: "

    invoke-virtual {p1, p2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p1, v2, v3}, Ljava/lang/StringBuilder;->append(J)Ljava/lang/StringBuilder;

    invoke-virtual {p1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p0, p1}, Lcom/meituan/android/walle/SignatureNotFoundException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 165
    :cond_3
    new-instance p0, Lcom/meituan/android/walle/SignatureNotFoundException;

    const-string p1, "No APK Signing Block before ZIP Central Directory"

    invoke-direct {p0, p1}, Lcom/meituan/android/walle/SignatureNotFoundException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 152
    :cond_4
    new-instance p0, Lcom/meituan/android/walle/SignatureNotFoundException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "APK too small for APK Signing Block. ZIP Central Directory offset: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, p1, p2}, Ljava/lang/StringBuilder;->append(J)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p0, p1}, Lcom/meituan/android/walle/SignatureNotFoundException;-><init>(Ljava/lang/String;)V

    throw p0
.end method

.method public static findCentralDirStartOffset(Ljava/nio/channels/FileChannel;)J
    .locals 2
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 106
    invoke-static {p0}, Lcom/meituan/android/walle/ApkUtil;->getCommentLength(Ljava/nio/channels/FileChannel;)J

    move-result-wide v0

    invoke-static {p0, v0, v1}, Lcom/meituan/android/walle/ApkUtil;->findCentralDirStartOffset(Ljava/nio/channels/FileChannel;J)J

    move-result-wide v0

    return-wide v0
.end method

.method public static findCentralDirStartOffset(Ljava/nio/channels/FileChannel;J)J
    .locals 3
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    const/4 v0, 0x4

    .line 125
    invoke-static {v0}, Ljava/nio/ByteBuffer;->allocate(I)Ljava/nio/ByteBuffer;

    move-result-object v0

    .line 126
    sget-object v1, Ljava/nio/ByteOrder;->LITTLE_ENDIAN:Ljava/nio/ByteOrder;

    invoke-virtual {v0, v1}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;

    .line 127
    invoke-virtual {p0}, Ljava/nio/channels/FileChannel;->size()J

    move-result-wide v1

    sub-long/2addr v1, p1

    const-wide/16 p1, 0x6

    sub-long/2addr v1, p1

    invoke-virtual {p0, v1, v2}, Ljava/nio/channels/FileChannel;->position(J)Ljava/nio/channels/FileChannel;

    .line 128
    invoke-virtual {p0, v0}, Ljava/nio/channels/FileChannel;->read(Ljava/nio/ByteBuffer;)I

    const/4 p0, 0x0

    .line 129
    invoke-virtual {v0, p0}, Ljava/nio/ByteBuffer;->getInt(I)I

    move-result p0

    int-to-long p0, p0

    return-wide p0
.end method

.method public static findIdValues(Ljava/nio/ByteBuffer;)Ljava/util/Map;
    .locals 10
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Ljava/nio/ByteBuffer;",
            ")",
            "Ljava/util/Map<",
            "Ljava/lang/Integer;",
            "Ljava/nio/ByteBuffer;",
            ">;"
        }
    .end annotation

    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/meituan/android/walle/SignatureNotFoundException;
        }
    .end annotation

    .line 195
    invoke-static {p0}, Lcom/meituan/android/walle/ApkUtil;->checkByteOrderLittleEndian(Ljava/nio/ByteBuffer;)V

    .line 202
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->capacity()I

    move-result v0

    add-int/lit8 v0, v0, -0x18

    const/16 v1, 0x8

    invoke-static {p0, v1, v0}, Lcom/meituan/android/walle/ApkUtil;->sliceFromTo(Ljava/nio/ByteBuffer;II)Ljava/nio/ByteBuffer;

    move-result-object p0

    .line 204
    new-instance v0, Ljava/util/LinkedHashMap;

    invoke-direct {v0}, Ljava/util/LinkedHashMap;-><init>()V

    const/4 v2, 0x0

    .line 207
    :goto_0
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->hasRemaining()Z

    move-result v3

    if-eqz v3, :cond_3

    add-int/lit8 v2, v2, 0x1

    .line 209
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->remaining()I

    move-result v3

    if-lt v3, v1, :cond_2

    .line 213
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->getLong()J

    move-result-wide v3

    const-wide/16 v5, 0x4

    cmp-long v5, v3, v5

    const-string v6, " size out of range: "

    const-string v7, "APK Signing Block entry #"

    if-ltz v5, :cond_1

    const-wide/32 v8, 0x7fffffff

    cmp-long v5, v3, v8

    if-gtz v5, :cond_1

    long-to-int v3, v3

    .line 220
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->position()I

    move-result v4

    add-int/2addr v4, v3

    .line 221
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->remaining()I

    move-result v5

    if-gt v3, v5, :cond_0

    .line 226
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->getInt()I

    move-result v5

    .line 227
    invoke-static {v5}, Ljava/lang/Integer;->valueOf(I)Ljava/lang/Integer;

    move-result-object v5

    add-int/lit8 v3, v3, -0x4

    invoke-static {p0, v3}, Lcom/meituan/android/walle/ApkUtil;->getByteBuffer(Ljava/nio/ByteBuffer;I)Ljava/nio/ByteBuffer;

    move-result-object v3

    invoke-interface {v0, v5, v3}, Ljava/util/Map;->put(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;

    .line 229
    invoke-virtual {p0, v4}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    goto :goto_0

    .line 222
    :cond_0
    new-instance v0, Lcom/meituan/android/walle/SignatureNotFoundException;

    new-instance v1, Ljava/lang/StringBuilder;

    invoke-direct {v1}, Ljava/lang/StringBuilder;-><init>()V

    invoke-virtual {v1, v7}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v1, v6}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v1, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    const-string v2, ", available: "

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    .line 224
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->remaining()I

    move-result p0

    invoke-virtual {v1, p0}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p0

    invoke-direct {v0, p0}, Lcom/meituan/android/walle/SignatureNotFoundException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 215
    :cond_1
    new-instance p0, Lcom/meituan/android/walle/SignatureNotFoundException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    invoke-virtual {v0, v7}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v0, v6}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, v3, v4}, Ljava/lang/StringBuilder;->append(J)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v0

    invoke-direct {p0, v0}, Lcom/meituan/android/walle/SignatureNotFoundException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 210
    :cond_2
    new-instance p0, Lcom/meituan/android/walle/SignatureNotFoundException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "Insufficient data to read size of APK Signing Block entry #"

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v0

    invoke-direct {p0, v0}, Lcom/meituan/android/walle/SignatureNotFoundException;-><init>(Ljava/lang/String;)V

    throw p0

    :cond_3
    return-object v0
.end method

.method private static getByteBuffer(Ljava/nio/ByteBuffer;I)Ljava/nio/ByteBuffer;
    .locals 3
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/nio/BufferUnderflowException;
        }
    .end annotation

    if-ltz p1, :cond_1

    .line 282
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->limit()I

    move-result v0

    .line 283
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->position()I

    move-result v1

    add-int/2addr p1, v1

    if-lt p1, v1, :cond_0

    if-gt p1, v0, :cond_0

    .line 288
    invoke-virtual {p0, p1}, Ljava/nio/ByteBuffer;->limit(I)Ljava/nio/Buffer;

    .line 290
    :try_start_0
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->slice()Ljava/nio/ByteBuffer;

    move-result-object v1

    .line 291
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->order()Ljava/nio/ByteOrder;

    move-result-object v2

    invoke-virtual {v1, v2}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;

    .line 292
    invoke-virtual {p0, p1}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;
    :try_end_0
    .catchall {:try_start_0 .. :try_end_0} :catchall_0

    .line 295
    invoke-virtual {p0, v0}, Ljava/nio/ByteBuffer;->limit(I)Ljava/nio/Buffer;

    return-object v1

    :catchall_0
    move-exception p1

    invoke-virtual {p0, v0}, Ljava/nio/ByteBuffer;->limit(I)Ljava/nio/Buffer;

    throw p1

    .line 286
    :cond_0
    new-instance p0, Ljava/nio/BufferUnderflowException;

    invoke-direct {p0}, Ljava/nio/BufferUnderflowException;-><init>()V

    throw p0

    .line 280
    :cond_1
    new-instance p0, Ljava/lang/IllegalArgumentException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "size: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, p1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p0, p1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw p0
.end method

.method public static getCommentLength(Ljava/nio/channels/FileChannel;)J
    .locals 11
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 66
    invoke-virtual {p0}, Ljava/nio/channels/FileChannel;->size()J

    move-result-wide v0

    const-wide/16 v2, 0x16

    cmp-long v4, v0, v2

    if-ltz v4, :cond_2

    sub-long/2addr v0, v2

    const-wide/32 v2, 0xffff

    .line 79
    invoke-static {v0, v1, v2, v3}, Ljava/lang/Math;->min(JJ)J

    move-result-wide v2

    const/4 v4, 0x0

    move v5, v4

    :goto_0
    int-to-long v6, v5

    cmp-long v8, v6, v2

    if-gtz v8, :cond_1

    sub-long v6, v0, v6

    const/4 v8, 0x4

    .line 85
    invoke-static {v8}, Ljava/nio/ByteBuffer;->allocate(I)Ljava/nio/ByteBuffer;

    move-result-object v8

    .line 86
    invoke-virtual {p0, v6, v7}, Ljava/nio/channels/FileChannel;->position(J)Ljava/nio/channels/FileChannel;

    .line 87
    invoke-virtual {p0, v8}, Ljava/nio/channels/FileChannel;->read(Ljava/nio/ByteBuffer;)I

    .line 88
    sget-object v9, Ljava/nio/ByteOrder;->LITTLE_ENDIAN:Ljava/nio/ByteOrder;

    invoke-virtual {v8, v9}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;

    .line 90
    invoke-virtual {v8, v4}, Ljava/nio/ByteBuffer;->getInt(I)I

    move-result v8

    const v9, 0x6054b50

    if-ne v8, v9, :cond_0

    const/4 v8, 0x2

    .line 91
    invoke-static {v8}, Ljava/nio/ByteBuffer;->allocate(I)Ljava/nio/ByteBuffer;

    move-result-object v8

    const-wide/16 v9, 0x14

    add-long/2addr v6, v9

    .line 92
    invoke-virtual {p0, v6, v7}, Ljava/nio/channels/FileChannel;->position(J)Ljava/nio/channels/FileChannel;

    .line 93
    invoke-virtual {p0, v8}, Ljava/nio/channels/FileChannel;->read(Ljava/nio/ByteBuffer;)I

    .line 94
    sget-object v6, Ljava/nio/ByteOrder;->LITTLE_ENDIAN:Ljava/nio/ByteOrder;

    invoke-virtual {v8, v6}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;

    .line 96
    invoke-virtual {v8, v4}, Ljava/nio/ByteBuffer;->getShort(I)S

    move-result v6

    if-ne v6, v5, :cond_0

    int-to-long v0, v6

    return-wide v0

    :cond_0
    add-int/lit8 v5, v5, 0x1

    goto :goto_0

    .line 102
    :cond_1
    new-instance p0, Ljava/io/IOException;

    const-string v0, "ZIP End of Central Directory (EOCD) record not found"

    invoke-direct {p0, v0}, Ljava/io/IOException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 68
    :cond_2
    new-instance p0, Ljava/io/IOException;

    const-string v0, "APK too small for ZIP End of Central Directory (EOCD) record"

    invoke-direct {p0, v0}, Ljava/io/IOException;-><init>(Ljava/lang/String;)V

    throw p0
.end method

.method private static sliceFromTo(Ljava/nio/ByteBuffer;II)Ljava/nio/ByteBuffer;
    .locals 3

    if-ltz p1, :cond_2

    if-lt p2, p1, :cond_1

    .line 248
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->capacity()I

    move-result v0

    .line 249
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->capacity()I

    move-result v1

    if-gt p2, v1, :cond_0

    .line 252
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->limit()I

    move-result v0

    .line 253
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->position()I

    move-result v1

    const/4 v2, 0x0

    .line 255
    :try_start_0
    invoke-virtual {p0, v2}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    .line 256
    invoke-virtual {p0, p2}, Ljava/nio/ByteBuffer;->limit(I)Ljava/nio/Buffer;

    .line 257
    invoke-virtual {p0, p1}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    .line 258
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->slice()Ljava/nio/ByteBuffer;

    move-result-object p1

    .line 259
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->order()Ljava/nio/ByteOrder;

    move-result-object p2

    invoke-virtual {p1, p2}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;
    :try_end_0
    .catchall {:try_start_0 .. :try_end_0} :catchall_0

    .line 262
    invoke-virtual {p0, v2}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    .line 263
    invoke-virtual {p0, v0}, Ljava/nio/ByteBuffer;->limit(I)Ljava/nio/Buffer;

    .line 264
    invoke-virtual {p0, v1}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    return-object p1

    :catchall_0
    move-exception p1

    .line 262
    invoke-virtual {p0, v2}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    .line 263
    invoke-virtual {p0, v0}, Ljava/nio/ByteBuffer;->limit(I)Ljava/nio/Buffer;

    .line 264
    invoke-virtual {p0, v1}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    throw p1

    .line 250
    :cond_0
    new-instance p0, Ljava/lang/IllegalArgumentException;

    new-instance p1, Ljava/lang/StringBuilder;

    invoke-direct {p1}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "end > capacity: "

    invoke-virtual {p1, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p1, p2}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    const-string p2, " > "

    invoke-virtual {p1, p2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p1, v0}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {p1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p0, p1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 246
    :cond_1
    new-instance p0, Ljava/lang/IllegalArgumentException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "end < start: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, p2}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    const-string p2, " < "

    invoke-virtual {v0, p2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, p1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p0, p1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 243
    :cond_2
    new-instance p0, Ljava/lang/IllegalArgumentException;

    new-instance p2, Ljava/lang/StringBuilder;

    invoke-direct {p2}, Ljava/lang/StringBuilder;-><init>()V

    const-string v0, "start: "

    invoke-virtual {p2, v0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p2, p1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {p2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p0, p1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw p0
.end method