diff options
Diffstat (limited to 'sshlib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java')
| -rw-r--r-- | sshlib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/sshlib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java b/sshlib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java new file mode 100644 index 0000000..087d658 --- /dev/null +++ b/sshlib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java @@ -0,0 +1,165 @@ + +package com.trilead.ssh2.packets; + +import java.io.IOException; +import java.security.SecureRandom; + +import com.trilead.ssh2.crypto.CryptoWishList; +import com.trilead.ssh2.transport.KexParameters; + + +/** + * PacketKexInit. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexInit +{ + byte[] payload; + + KexParameters kp = new KexParameters(); + + public PacketKexInit(CryptoWishList cwl) + { + kp.cookie = new byte[16]; + new SecureRandom().nextBytes(kp.cookie); + + kp.kex_algorithms = cwl.kexAlgorithms; + kp.server_host_key_algorithms = cwl.serverHostKeyAlgorithms; + kp.encryption_algorithms_client_to_server = cwl.c2s_enc_algos; + kp.encryption_algorithms_server_to_client = cwl.s2c_enc_algos; + kp.mac_algorithms_client_to_server = cwl.c2s_mac_algos; + kp.mac_algorithms_server_to_client = cwl.s2c_mac_algos; + kp.compression_algorithms_client_to_server = cwl.c2s_comp_algos; + kp.compression_algorithms_server_to_client = cwl.s2c_comp_algos; + kp.languages_client_to_server = new String[] {}; + kp.languages_server_to_client = new String[] {}; + kp.first_kex_packet_follows = false; + kp.reserved_field1 = 0; + } + + public PacketKexInit(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_KEXINIT) + throw new IOException("This is not a KexInitPacket! (" + packet_type + ")"); + + kp.cookie = tr.readBytes(16); + kp.kex_algorithms = tr.readNameList(); + kp.server_host_key_algorithms = tr.readNameList(); + kp.encryption_algorithms_client_to_server = tr.readNameList(); + kp.encryption_algorithms_server_to_client = tr.readNameList(); + kp.mac_algorithms_client_to_server = tr.readNameList(); + kp.mac_algorithms_server_to_client = tr.readNameList(); + kp.compression_algorithms_client_to_server = tr.readNameList(); + kp.compression_algorithms_server_to_client = tr.readNameList(); + kp.languages_client_to_server = tr.readNameList(); + kp.languages_server_to_client = tr.readNameList(); + kp.first_kex_packet_follows = tr.readBoolean(); + kp.reserved_field1 = tr.readUINT32(); + + if (tr.remain() != 0) + throw new IOException("Padding in KexInitPacket!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_KEXINIT); + tw.writeBytes(kp.cookie, 0, 16); + tw.writeNameList(kp.kex_algorithms); + tw.writeNameList(kp.server_host_key_algorithms); + tw.writeNameList(kp.encryption_algorithms_client_to_server); + tw.writeNameList(kp.encryption_algorithms_server_to_client); + tw.writeNameList(kp.mac_algorithms_client_to_server); + tw.writeNameList(kp.mac_algorithms_server_to_client); + tw.writeNameList(kp.compression_algorithms_client_to_server); + tw.writeNameList(kp.compression_algorithms_server_to_client); + tw.writeNameList(kp.languages_client_to_server); + tw.writeNameList(kp.languages_server_to_client); + tw.writeBoolean(kp.first_kex_packet_follows); + tw.writeUINT32(kp.reserved_field1); + payload = tw.getBytes(); + } + return payload; + } + + public KexParameters getKexParameters() + { + return kp; + } + + public String[] getCompression_algorithms_client_to_server() + { + return kp.compression_algorithms_client_to_server; + } + + public String[] getCompression_algorithms_server_to_client() + { + return kp.compression_algorithms_server_to_client; + } + + public byte[] getCookie() + { + return kp.cookie; + } + + public String[] getEncryption_algorithms_client_to_server() + { + return kp.encryption_algorithms_client_to_server; + } + + public String[] getEncryption_algorithms_server_to_client() + { + return kp.encryption_algorithms_server_to_client; + } + + public boolean isFirst_kex_packet_follows() + { + return kp.first_kex_packet_follows; + } + + public String[] getKex_algorithms() + { + return kp.kex_algorithms; + } + + public String[] getLanguages_client_to_server() + { + return kp.languages_client_to_server; + } + + public String[] getLanguages_server_to_client() + { + return kp.languages_server_to_client; + } + + public String[] getMac_algorithms_client_to_server() + { + return kp.mac_algorithms_client_to_server; + } + + public String[] getMac_algorithms_server_to_client() + { + return kp.mac_algorithms_server_to_client; + } + + public int getReserved_field1() + { + return kp.reserved_field1; + } + + public String[] getServer_host_key_algorithms() + { + return kp.server_host_key_algorithms; + } +} |