287 lines
6.1 KiB
Smali
287 lines
6.1 KiB
Smali
.class final Landroidx/multidex/ZipUtil;
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.super Ljava/lang/Object;
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.source "ZipUtil.java"
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# annotations
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.annotation system Ldalvik/annotation/MemberClasses;
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value = {
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Landroidx/multidex/ZipUtil$CentralDirectory;
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}
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.end annotation
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# static fields
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.field private static final BUFFER_SIZE:I = 0x4000
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.field private static final ENDHDR:I = 0x16
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.field private static final ENDSIG:I = 0x6054b50
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# direct methods
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.method constructor <init>()V
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.locals 0
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invoke-direct {p0}, Ljava/lang/Object;-><init>()V
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return-void
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.end method
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.method static computeCrcOfCentralDir(Ljava/io/RandomAccessFile;Landroidx/multidex/ZipUtil$CentralDirectory;)J
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.locals 9
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Ljava/io/IOException;
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}
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.end annotation
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new-instance v0, Ljava/util/zip/CRC32;
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invoke-direct {v0}, Ljava/util/zip/CRC32;-><init>()V
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iget-wide v1, p1, Landroidx/multidex/ZipUtil$CentralDirectory;->size:J
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iget-wide v3, p1, Landroidx/multidex/ZipUtil$CentralDirectory;->offset:J
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invoke-virtual {p0, v3, v4}, Ljava/io/RandomAccessFile;->seek(J)V
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const-wide/16 v3, 0x4000
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invoke-static {v3, v4, v1, v2}, Ljava/lang/Math;->min(JJ)J
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move-result-wide v5
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long-to-int p1, v5
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const/16 v5, 0x4000
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new-array v5, v5, [B
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const/4 v6, 0x0
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invoke-virtual {p0, v5, v6, p1}, Ljava/io/RandomAccessFile;->read([BII)I
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move-result p1
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:goto_0
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const/4 v7, -0x1
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if-eq p1, v7, :cond_0
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invoke-virtual {v0, v5, v6, p1}, Ljava/util/zip/CRC32;->update([BII)V
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int-to-long v7, p1
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sub-long/2addr v1, v7
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const-wide/16 v7, 0x0
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cmp-long p1, v1, v7
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if-eqz p1, :cond_0
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invoke-static {v3, v4, v1, v2}, Ljava/lang/Math;->min(JJ)J
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move-result-wide v7
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long-to-int p1, v7
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invoke-virtual {p0, v5, v6, p1}, Ljava/io/RandomAccessFile;->read([BII)I
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move-result p1
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goto :goto_0
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:cond_0
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invoke-virtual {v0}, Ljava/util/zip/CRC32;->getValue()J
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move-result-wide p0
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return-wide p0
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.end method
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.method static findCentralDirectory(Ljava/io/RandomAccessFile;)Landroidx/multidex/ZipUtil$CentralDirectory;
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.locals 7
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Ljava/io/IOException;,
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Ljava/util/zip/ZipException;
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}
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.end annotation
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invoke-virtual {p0}, Ljava/io/RandomAccessFile;->length()J
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move-result-wide v0
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const-wide/16 v2, 0x16
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sub-long/2addr v0, v2
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const-wide/16 v2, 0x0
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cmp-long v4, v0, v2
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if-ltz v4, :cond_3
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const-wide/32 v4, 0x10000
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sub-long v4, v0, v4
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cmp-long v6, v4, v2
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if-gez v6, :cond_0
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goto :goto_0
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:cond_0
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move-wide v2, v4
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:goto_0
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const v4, 0x6054b50
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invoke-static {v4}, Ljava/lang/Integer;->reverseBytes(I)I
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move-result v4
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:goto_1
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invoke-virtual {p0, v0, v1}, Ljava/io/RandomAccessFile;->seek(J)V
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invoke-virtual {p0}, Ljava/io/RandomAccessFile;->readInt()I
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move-result v5
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if-eq v5, v4, :cond_2
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const-wide/16 v5, 0x1
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sub-long/2addr v0, v5
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cmp-long v5, v0, v2
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if-ltz v5, :cond_1
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goto :goto_1
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:cond_1
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new-instance p0, Ljava/util/zip/ZipException;
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const-string v0, "End Of Central Directory signature not found"
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invoke-direct {p0, v0}, Ljava/util/zip/ZipException;-><init>(Ljava/lang/String;)V
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throw p0
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:cond_2
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const/4 v0, 0x2
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invoke-virtual {p0, v0}, Ljava/io/RandomAccessFile;->skipBytes(I)I
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invoke-virtual {p0, v0}, Ljava/io/RandomAccessFile;->skipBytes(I)I
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invoke-virtual {p0, v0}, Ljava/io/RandomAccessFile;->skipBytes(I)I
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invoke-virtual {p0, v0}, Ljava/io/RandomAccessFile;->skipBytes(I)I
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new-instance v0, Landroidx/multidex/ZipUtil$CentralDirectory;
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invoke-direct {v0}, Landroidx/multidex/ZipUtil$CentralDirectory;-><init>()V
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invoke-virtual {p0}, Ljava/io/RandomAccessFile;->readInt()I
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move-result v1
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invoke-static {v1}, Ljava/lang/Integer;->reverseBytes(I)I
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move-result v1
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int-to-long v1, v1
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const-wide v3, 0xffffffffL
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and-long/2addr v1, v3
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iput-wide v1, v0, Landroidx/multidex/ZipUtil$CentralDirectory;->size:J
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invoke-virtual {p0}, Ljava/io/RandomAccessFile;->readInt()I
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move-result p0
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invoke-static {p0}, Ljava/lang/Integer;->reverseBytes(I)I
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move-result p0
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int-to-long v1, p0
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and-long/2addr v1, v3
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iput-wide v1, v0, Landroidx/multidex/ZipUtil$CentralDirectory;->offset:J
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return-object v0
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:cond_3
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new-instance v0, Ljava/util/zip/ZipException;
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new-instance v1, Ljava/lang/StringBuilder;
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const-string v2, "File too short to be a zip file: "
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invoke-direct {v1, v2}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V
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invoke-virtual {p0}, Ljava/io/RandomAccessFile;->length()J
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move-result-wide v2
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invoke-virtual {v1, v2, v3}, Ljava/lang/StringBuilder;->append(J)Ljava/lang/StringBuilder;
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invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;
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move-result-object p0
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invoke-direct {v0, p0}, Ljava/util/zip/ZipException;-><init>(Ljava/lang/String;)V
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goto :goto_3
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:goto_2
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throw v0
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:goto_3
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goto :goto_2
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.end method
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.method static getZipCrc(Ljava/io/File;)J
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.locals 3
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Ljava/io/IOException;
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}
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.end annotation
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new-instance v0, Ljava/io/RandomAccessFile;
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const-string v1, "r"
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invoke-direct {v0, p0, v1}, Ljava/io/RandomAccessFile;-><init>(Ljava/io/File;Ljava/lang/String;)V
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:try_start_0
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invoke-static {v0}, Landroidx/multidex/ZipUtil;->findCentralDirectory(Ljava/io/RandomAccessFile;)Landroidx/multidex/ZipUtil$CentralDirectory;
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move-result-object p0
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invoke-static {v0, p0}, Landroidx/multidex/ZipUtil;->computeCrcOfCentralDir(Ljava/io/RandomAccessFile;Landroidx/multidex/ZipUtil$CentralDirectory;)J
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move-result-wide v1
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:try_end_0
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.catchall {:try_start_0 .. :try_end_0} :catchall_0
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invoke-virtual {v0}, Ljava/io/RandomAccessFile;->close()V
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return-wide v1
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:catchall_0
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move-exception p0
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invoke-virtual {v0}, Ljava/io/RandomAccessFile;->close()V
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throw p0
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.end method
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