〖Android〗sshd for android, 及映射根文件系統至本地盤符


嚴重問題:

  若移植失敗將可能直接導致手機***無法開機***,導入相關文件需慎重!

達成效果:

  1. ssh 遠程登錄 Android 終端;

  2. sftp 掛載/映射 Android 根文件系統至本地網絡驅動盤符;

適用場景:

  前期開發過程中,需要做大量的調試,需要對Android文件系統頻繁修改;

操作流程:

詳細操作:

  一、Linux操作系統相關的部分

   1. 編譯 openssh for Android

    同步及編譯Android源碼的基礎操作:[編譯Android源碼入門]

    在一切准備就緒之后,輸入以下命令:

source build/envsetup.sh
lunch cm_mako-userdebug
mmm -B external/zlib
mmm -B external/openssl mmm
-B external/openssh

    將會生成以下的文件:

1.zlib
----------------------------------------
/media/Source/cm11/out/target/product/mako/system/lib/libz.so
/media/Source/cm11/out/target/product/mako/system/bin/gzip

2.openssl
----------------------------------------
out/target/product/mako/system/lib/libcrypto.so
out/target/product/mako/system/lib/libssl.so
out/target/product/mako/system/bin/ssltest
out/target/product/mako/system/bin/openssl

3.openssh
----------------------------------------
/media/Source/cm11/out/target/product/mako/system/lib/libssh.so
/media/Source/cm11/out/target/product/mako/system/bin/ssh
/media/Source/cm11/out/target/product/mako/system/bin/sftp
/media/Source/cm11/out/target/product/mako/system/bin/scp
/media/Source/cm11/out/target/product/mako/system/bin/sshd
/media/Source/cm11/out/target/product/mako/system/bin/sftp-server
/media/Source/cm11/out/target/product/mako/system/bin/ssh-keygen
/media/Source/cm11/out/target/product/mako/system/etc/ssh/sshd_config
/media/Source/cm11/out/target/product/mako/system/bin/start-ssh

    把這些文件,拷貝至對應的位置即可,備份下載:http://pan.baidu.com/s/1o69DTV0

    解壓:tar zxf openssh_android_binary.tgz -C /

   2. 配置Adnroid操作系統中的 sshd_config 文件

    adb shell 登錄 Android 操作系統后,vi /data/ssh/sshd_config,復制以下代碼:

# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2

# custom configure start
# chnange the hostkey default path, by scue
HostKey /data/ssh/ssh_host_rsa_key HostKey /data/ssh/ssh_host_dsa_key HostKey /data/ssh/ssh_host_ecdsa_key
# custom configre end

#Privilege Separation is turned on for security
UsePrivilegeSeparation sandbox

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 768

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
PermitRootLogin yes
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile /data/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords yes

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication yes

# Kerberos options
#KerberosAuthentication no
#KerberosGetAFSToken no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

# 這里指向 sftp 可執行文件的路徑! Subsystem sftp /system/bin/sftp-server

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
#UsePAM yes

# root login without passwd, by scue.
# custom configure start
PermitRootLogin without-password RSAAuthentication yes PubkeyAuthentication yes PermitEmptyPasswords yes
# custom configure end

    這個配置可以在 start-ssh & 執行之后,啟動sshd的同時也啟動了 sftp-server ,同時使root帳戶無密碼可登錄(但需要RSA驗證),同時還要執行以下命令行操作:

mount -o remount,rw /system
mv /system/etc/ssh/sshd_config{,.bak}
ln -s /data/ssh/sshd_config /system/etc/ssh/sshd_config

    雖說Android代碼中 sshd 執行時自動查找的是 /data/ssh/sshd_config,但是還是創建一個鏈接至 /system/etc/ssh/sshd_config的好,說不准哪天情況有變~

   3. Android終端中生成 ssh_host_* 等等這些雜項文件:

    在終端中輸入以下命令:

cd /data/ssh/
ssh-keygen -t rsa -f ssh_host_rsa_key -N ""
ssh-keygen -t dsa -f ssh_host_dsa_key -N ""
ssh-keygen -t ecdsa -f ssh_host_ecdsa_key -N ""

   4. 上傳本地id_rsa.pub文件 >> 至 Android 手機中:

    從sshd_config中的 AuthorizedKeysFile /data/.ssh/authorized_keys,這一行來看,很明了地知道,這個RSA公鑰應當保存至/data/.ssh/authorized_keys文件中(這個RSA公鑰在Linux中可以通過命令行 ssh-keygen -t rsa -C "your_email" 來生成,win上單獨講解)。

    在Linux終端中輸入以下命令:

adb root
adb push ~/.ssh/id_rsa.pub /sdcard/id_rsa.pub
adb shell
mkdir -p /data/.ssh
cat /sdcard/id_rsa.pub >> /data/.ssh/authorized_keys
chmod 0600 /data/.ssh/authorized_keys

    這樣子,就可以在Linux終端中,輸入 ssh root@ip_addr 來登錄Android手機設備進行操作了,同時 sftp root@ip_addr 對文件操作也是可以的,Enjoy!

  二、Windows操作系統相關的部分

    大多數人,還是在Windows中操作,為了方便對Android中的設備文件進行操作,可通過”映射網絡驅動器“的方式,掛載Android根目錄至一個”盤符“,以root權限進行讀寫操作都是可以的。

    主要的工具是:stfpdrive,下載鏈接:http://pan.baidu.com/s/1c048BTm,具體操作看圖示:

  最后,點擊"connect"即可鏈接至手機(注:ip地址請根據設備的自身實際情況進行修改),最終效果圖如下:


免責聲明!

本站轉載的文章為個人學習借鑒使用,本站對版權不負任何法律責任。如果侵犯了您的隱私權益,請聯系本站郵箱yoyou2525@163.com刪除。



 
粵ICP備18138465號   © 2018-2025 CODEPRJ.COM