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webmin 之 setup.sh 脚本分析

#find install directory

cd 'dirname $0'

if [ -x /bin/pwd ]; then

wadir='/bin/pwd'

else

wadir='pwd';

#查找并获得安装目录 -> wadir

ver='cat $wadir/version'

#获得安装版本

echo "*****************"

#显示用户提示信息

id | grep "uid=1<" >/dev/null

if [ $? !="0" ]; then

echo "ERROR:

echo "";

exit 1;

#检查是否为root 安装否则提示出错,程序推出

#才知道还有id 这么个命令，，见笑了

echo "Installing webmin in $ wadir

allmods='cd $wadir; ls */module.info | sed -e 's/\/module.info//g' | xargs e

cho'

echo ""

#获取所有的可安装模块信息

printf "Config file directory [/etc/webmin]:"

if [ "$config_dir" = ""]; then

config_dir = /etc/webmin

# 询问配置文件目录

abspath='echo $config_dir | grep "^/"'

if [ "$abspath" = "" ]; then

echo "Config directory must be an absolute path"

echo ""

exit 2

#检查配置文件目录是否合法

if [ ! -d $config_dir ]; then

mkdir $config_dir

if [ $? !=0 ]; then

echo "ERROR: failed to create directory $config_dir"

echo ""

exit 2

#创建配置目录,并检查是否成功

if [ -r "$config_dir/config" ]; then

echo "Found existing Webmin configuration in $config_dir"

echo ""

upgrading=1

#检查配置文件是否存在,并置标志upgrading

## 注,版本更新部分暂略

ls $config_dir | grep -v rpmsave >/dev/null 2>&1

if [ "$?" = "0" -a "$config_dir" != "/etc/webmin" ]; then

echo "

exit 2

#配置目录非空,退出配置

#否则继续安装

pirntf "Log file directory [/var/webmin]:"

if [ "$var_dir" = "" ]; then

read var_dir

if [ "$var_dir" = "" ]; then

var_dir=/var/webmin

#创建系统运行时目录 log directory

#缺省使用/var/webmin

abspath='echo $var_dir | grep "^/"'

if [ " &abspath " = "" ]; then

echo "log file d

.."

echo ""

echo 3

#检查该运行时文件目录是否合法,否则退出

#grep "^/" 行首以"/"开始

if [ ! -d $var_dir ]; then

mkdir $var_dir

if [ $? !=0 ]; then

ehco "error:

#运行时文件目录不存在,则创建之,若创建失败,退出

依靠perl 运行的webmin当然要确定一下系统中是否有perl 的解释器,

以下:

if [ -x /usr/bin/perl ]; then

perldef=/usr/bin/perl

elif [ -x /usr/local/bin/perl ]; then

perldef=/usr/local/bin/perl

else

perldef =""

#检查几个常用perl安装路径是否有perl 存在,否则定义perldef变量为""

if [ "$perl" = "" ]; then

if [ "$perldef" = "" ]; then

read perl

if [ "$perl" = "" ];then

echo "error:

exit 4

else

printf "Full path to perl

#提示输入

read perl

if [ "$perl" = ""];then

perl=$perldef

#上一步如果没有找到perl 的安装路径,则要求用户输入perl 的路径

#有问题这里! perl & perldef ?! 真麻烦! 有一个不久行了吗?!

if [ ! -x $perl ]; then

echo "error: message

exit 5

# 没有perl环境, 退出

$perl -e 'print "foobar\n"' 2>/dev/null | grep foobar >/dev/null

if [ $? != "0" ];then

echo"error

exit 6

#否则测试perl 是否可以运行

(打印一行试试,并进行检测)

$perl -e 'exit ($] < 5.002 ? 1:0)'

if [ $? = "1" ]; then

echo "error : message

exit 7

#检测版本信息,要求5.002 以上版本( 本setup.sh出自 ver0.88)

$perl -e 'use Socket; print "foobar\n"' 2>/dev/null | grep foobar >/dev/null

if [ $? != "0" ];then

echo "error mesage

exit 8

#检测socket 模块是否正确安装..否则退出

$perl -e '$c = crypt("xx","yy"); exit($c ? 0:1)'

if [ $? != "0" ]; then

echo "erro mesage.."

eixt 9

#检测加密模块是否正确安装,否则退出

echo " Pelr seems to be installed ok"

echo ""

#通知用户perl检测正常

操作系统选择,见 oschooser.pl 和 os_list.txt 理的内容

oschooser.pl 实现系统选择, 还没细看,大概就是根据不同的linux发

布(因为它们的配置文件名会有所不同,怎么说,叫个案追究吧呵呵)

给webmin使用不同配置文件(参数变化)

printf "Web server port (default 10000): "

if [ "$port" = "" ]; then

read port

if [ "$port" = "" ]; then

port=10000

if [ $port -lt 1 ]; then

echo "ERROR: $port is not a valid port number"

echo ""

exit 11

if [ $port -gt 65535 ]; then

echo "ERROR: $port is not a valid port number. Port numbers cannot be"

echo " greater than 65535"

echo ""

exit 12

$perl -e 'use Socket; socket(FOO, PF_INET, SOCK_STREAM, getprotobyname("tcp"

));

setsockopt(FOO, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));

bind(FOO, sockaddr_in($ARGV[0], INADDR_ANY)) || exit(1);

exit(0);'

$port

if [ $? != "0" ]; then

echo "ERROR: TCP port $port is already in use by another program"

echo ""

exit 13

printf "Login name (default admin): "

if [ "$login" = "" ]; then

read login

if [ "$login" = "" ]; then

echo $login | grep : >/dev/null

if [ "$?" = "0" ]; then

echo "ERROR: Username contains a : character"

echo ""

exit 14

printf "Login password: "

if [ "$password" = "" -a "$crypt" = "" ]; then

stty -echo

read password

stty echo

printf "\n"

printf "Password again: "

stty -echo

read password2

stty echo

printf "\n"

if [ "$password" != "$password2" ]; then

echo "ERROR: Passwords don't match"

echo ""

exit 14

echo $password | grep : >/dev/null

if [ "$?" = "0" ]; then

echo "ERROR: Password contains a : character"

echo ""

exit 14

defhost=`hostname`

printf "Web server hostname (default $defhost): "

if [ "$host" = "" ]; then

read host

if [ "$host" = "" ]; then

host=$defhost

if [ "$ssl" = "" ]; then

ssl=0

$perl -e 'use Net::SSLeay' >/dev/null 2>/dev/null

if [ $? = "0" ]; then

printf "Use SSL (y/n): "

read sslyn

if [ "$sslyn" = "y" -o "$sslyn" = "Y" ]; then

ssl=1

else

echo "The Perl SSLeay library is not installed. SSL not available."

rm -f core

# Ask whether to run at boot time

if [ "$atboot" = "" ]; then

initsupp=`grep "^os_support=" $wadir/init/module.info | sed -e 's/os_suppor

t=//g' | grep $os_type`

atboot=0

if [ "$initsupp" != "" ]; then

printf "Start webmin at boot time (y/n): "

read atbootyn

if [ "$atbootyn" = "y" -o "$atbootyn" = "Y" ]; then

atboot=1

else

echo "webmin does not support being started at boot time on your system."

makeboot=$atboot

#很无聊啊, 在分析下去

.. 失败! 选择错误!

#太失败拉

.不好玩

if [ "$port" = "" ];then

read port

if [ "$port" = "" ];then

port=8081

if [ $port -lt 1]; then

echo "error message"

eixt 11

#接受拥护定义服务端口号, 缺省使用8081

if [ $port -gt 65535 ] ;then

#error message

exit 12

#若用户定义的端口号大于65535 , 则报错退出

#用户可使用的端口是从1000 以后还是从1024 以后? 谁告诉我?

$perl -e 'use Socket; socket(FOO, PF_INET, SOCK_STREAM, getprotobyname("tcp"

));

set socket(FOO,SOL_SOCKET,SO_REUSEADDR, pack("l",1));

bind(FOO,sockaddr_in($ARGV[0],INADDR_ANY)) || exit(1);exit(0);' $p

ort

if [ $? !="0" ]; then

echo "error message

exit 13

#测试端口是否被占用, 方法见perl -e 那行的代码

printf "login name (default admin):"

if [ "$loging" = ""] ; then

read login

if [ "$login" = ""]; then

loging="admin"

#接受用户输入的管理员名称,缺省使用admin

echo $login | grep : >/dev/null

if [ "$?" = "0" ] ; then

echo error mesage..

exit 14

# 检测用户名称是否合法, 这里可以稍加改进,不用动不动就退出安装.

pirntf " loging passwd"

if [ "$password" = "" -a "$crypt" = "" ]; then

stty -echo

read password

stty echo

printf "\n"

printf "password agani:"

stty -echo

read password2

stty echo

printf "\n"

if [ "$password" != "$pasword2" ] ;then

echo "Error message"

exit 14

#检查密码,并控制屏显

defhost='hostname'

printf "web server hostname (default $defhost):"

if [ "$host" = ""]; then

read host

if [ "$host" = "" ]; then

host=$defhost

# 设置主机名称,没有则接受用户输入

if [ "$ssl" = ""]; then

ssl = 0

$perl -e 'use Net::SSLeay'>/dev/null 2>/dev/null

if [ $? = "0" ] ; then

printf "Use SSL (y/n):"

read sslyn

if [ "$sslyn" = "y" -o "$sslyn" = "Y" ] ; then

ssl=1

else

echo "asdfjalksdjfjcjvknx

rm -f core

#检查是否正确安装支持 ssl 模块, 否则给出提示信息

if [ "$atboot" = "" ];then

initsupp='grep "^os_support=" $wadir/init/module.info | sed -e 's/os_suppo

rt=//g' |grep $os_type'

atboot=0

if [ "$initsupp" != ""];then

printf "Start webmin at boot time (y/n):"

read atbootyn

if [ "$atbootyn" = "y" -o "$atbootyn" = "Y"]; then

atboot=1

else

echo

#检测模块安装文件/init/module.info中查找os_support 项所支持的

#os_type中是否有当前的os_type,有则提示用户选择是否在系统启动时

#启动webmin

echo $perl > $config_dir/perl-path

echo $var_dir > $config_dir/var-path

echo "******************************************"

echo "Creating web server config files.."

cfile=$config_dir/miniserv.conf

echo "port=$port" >> $cfile

echo "root=$wadir" >> $cfile

echo "host=$host" >> $cfile

echo "mimetypes=$wadir/mime.types" >> $cfile

echo "addtype_cgi=internal/cgi" >> $cfile

echo "realm=LNMS Server" >> $cfile

echo "logfile=$var_dir/miniserv.log" >> $cfile

echo "pidfile=$var_dir/miniserv.pid" >> $cfile

echo "logtime=168" >> $cfile

echo "ppath=$ppath" >> $cfile

echo "ssl=$ssl" >> $cfile

echo "env_LNMS_CONFIG=$config_dir" >> $cfile

echo "env_LNMS_VAR=$var_dir" >> $cfile

echo "atboot=$atboot" >> $cfile

echo "logout=$config_dir/logout-flag" >> $cfile

echo "listen=10000" >> $cfile

echo "denyfile=\\.pl\$" >> $cfile

if [ "$allow" != "" ]; then

echo "allow=$allow" >> $cfile

if [ "$session" != "" ]; then

echo "session=$session" >> $cfile

else

echo "session=1" >> $cfile

#创建/etc/webmin(配置文件目录)下的miniserv.conf

#前面搜集的一些变量在此被写入文件

ufile=$config_dir/miniserv.users

if [ "$crypt" != "" ]; then

echo "$login:$crypt:0" > $ufile

else

$perl -e 'print "$ARGV[0]:",crypt($ARGV[1], "XX"),":0\n"' "$login" "$passwo

rd" > $ufile

chmod 600 $ufile

echo "userfile=$ufile" >> $cfile

#创建用户加密文件,并更改其权限

kfile=$config_dir/miniserv.pem

cp $wadir/miniserv.pem $kfile

chmod 600 $kfile

#拷贝安装目录下的miniserv必须的模块文件到/etc/webmin 目录

#并设置权限

echo "keyfile=$config_dir/miniserv.pem" >> $cfile

#追加miniserv 模块文件信息至 miniserv.conf 文件

chmod 600 $cfile

echo "..done"

echo ""

echo "Creating access control file.."

afile=$config_dir/webmin.acl

rm -f $afile

#清空已存在的webmin acl 文件,不管有没有,删下看!

echo "$login: $allmods" >> $afile

chmod 600 $afile

echo "..done"

echo ""

#将现有的模块注册,并重新创建webmin.acl 文件

还有一点

#有问题啊这里，谁给我讲讲

if [ "$noperlpath" = "" ]; then

echo "Inserting path to perl into scripts.."

(find $wadir -name '*.cgi' -print;find $wadir -name '*.pl' -print)

| $perl $wadir/perlpath.pl $perl -

echo "..done"

echo ""

# 有问题：perl perlpath.pl perl -

这里在做什么？！

#创建/etc/webmin/start & stop 脚本。。。略

if [ -r /etc/system.cnf ] ; then

source /etc/system.cnf

if [ "$CONF_LST_LANG" = "us" ];then

CONF_LST_LANG=en

elif [ "$CONF_LST_LANG" = "uk" ]; then

CONF_LST_LANG=en

grep "lang=$CONF_LST_LANG," $wadir/lang_list.txt >/dev/null 2>&1

if [ "$?" = 0 ]; then

echo "lang=$CONF_LST_LANG" >> $config_dir/config

#检查系统培植文件/etc/system.cnf中的CONF_LST_LANG

#设置语言相关得选项

echo $ver > $config_dir/version

echo "..done"

if [ "$makeboot" = "1" ] ;then

(cd $wadir/init; WEBMIN_CONFIG=$config_dir WEBMIN_VAR=$var_dir

$wadir/init/atboot.pl)

# 根据安装时的启动选项设置相关文件，参数

# 注意最后运行的 atboot.pl 再作分析

if [ "$nouninstall" = "" ]; then

cat >$config_dir/uninstall.sh <<EOF

#!/bin/sh

printf " Are you sure you want to unistall Webmin? (Y/N):"

read answer

printf "\n"

if [ "\$answer" = "y" ]; then

$config_dir/stop

if [ "$atboot" = "1" ]; then

(cd $wadir/init ; WEBIN_CONFIG=$config_dir WEBMIN_VAR=$var_dir $wadir/init/

delboot.pl)

echo "Deleting $wadir.."

rm -rf $wadir

echo "Deleting $config_dir ."

rm -rf $config_dir

echo "..Done"

EOF

chmod +x $config_dir/uninstall.sh

echo "..done"

# 创建卸载脚本，很easy 给点提示，让后把相关得目录删掉即可

# 注意$wadir/init/delboot.pl 并注意与adboot.pl 对照

echo "Changing ownership and permissions .."

chown -R root:bin $config_dir

chmod -R og-rw $config_dir

chmod 755 $config_dir/sendmail/config >/dev/null 2>&1

chmod 755 $config_dir/sendmail/autoreply.pl >/dev/null 2>&1

#改变配置模块文件属主及访问权限

#为什么对sendmail单独处理？我还不太清楚

if [ "$nochown" = "" ]; then

chown -R root:bin $wadir

#chmod -R og-rwx $wadir

if [ $var_dir != "/var" ]; then

chown -R root:bin $var_dir

chmod -R og-rwx $var_dir

echo "..done"

echo ""

#改变安装目录（安装完后即执行目录）的属主

#处理$var_dir 的属主及执行权限比较周到

if [ "$nostart" = "" ]; then

echo "Attempting to start Webmin mini web server.."

$config_dir/start

if [ $? != "0" ]; then

echo "ERROR: Failed to start web server!"

echo ""

exit 14

# 试图启动webmin 的 mini server

# 若失败则退出

echo "..done"

echo ""

echo "***********************************"

echo "Webmin has been installed and started successfully. Use your web"

echo "browser to go to"

echo ""

#启动成功给出响应的提示信息

if [ "$ssl" = "1" ]; then

echo " https://$host:$port/"

else

echo " http://$host:$port/"

echo ""

echo "and login with the name and password you entered previously."

echo ""

if [ "$ssl" = "1" ]; then

echo "Because Webmin uses SSL for encryption only, the certificate"

echo "it uses is not signed by one of the recognized CAs such as"

echo "Verisign. When you first connect to the Webmin server, your"

echo "browser will ask you if you want to accept the certificate"

echo "presented, as it does not recognize the CA. Say yes."

echo ""

#若ssl 有效，则给出启动客户端的方式：https://

:prot

# over 本次分析排除了，upgrade 操作的代码分析

不过我认为

# 主要部分搞定的话,足以,省得看着那么多,不爽! :)

# 欢迎转载更希望与你交流(51run@21cn.com) 呵呵

posted on 2007-04-29 20:41 杨粼波阅读(742) 评论(0) 编辑收藏引用

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webmin 之 setup.sh 脚本分析