login.sh

gistfile1.txt

#!/usr/bin/expect -f
#Usage
#assume you save this file as "go"
#1  ./go 10.148.137.174    user is default "root"
#2  ./go 10.148.137.174:/usr/local    user is default "root" after login,it will open directory /usr/local/ automatically
#3  ./go franklan@10.148.137.174     user is "franklan"
#4  ./go root@10.148.137.174:/usr/local/         after login,it will open directory /usr/local/ automatically

proc try_password { path} {
	#import global variables
	global global_passwd_index
	global global_passwd
	#send_user $passwd
	expect {
		"*assword:" {
			#get a password from array
			set passwd_to_sent $global_passwd($global_passwd_index)
			send "$passwd_to_sent\r"
			expect {
				#After login, most shells look like "~#" or "]$". 
				#We can input our commands
				"#*" {	
					send "cd $path\r"
				}
				"$*" {	
					send "cd $path\r"
				}
				#Login fails, try the next password
				"*assword:" {
					#iterate the next password
					set global_passwd_index [expr $global_passwd_index+1]
					set passwd_to_sent $global_passwd($global_passwd_index)
					send "$passwd_to_sent\r"
					#recursion
					try_password $path
				}
			}
		}
		"#*" {	
			send "cd $path\r"
		}
		"$*" {	
			send "cd $path\r"
		}
        "yes/no)?" {
                        send "yes\r"
                        #recursion
                        try_password $path
        }
	}
}


set timeout 30
#Get the first argv
set ip [lindex $argv 0]
#Default user
set user "root"
#Default directory you want to go into after login
set path "/usr/local/storage/http/"
#The most usual passwords
#In ideal condition, you can have N elements in password array to try one by one. But most machines only allow you to input password 3 times. 


#So have 3 passwords here is fine
set global_passwd(1) "#7a9@#cr"   
set global_passwd(2) "isd!@#user"
set global_passwd(3) "Wyw&have9"



#Index to iterate password array
set global_passwd_index 1

#Parse params like root@10.148.137.174:/usr/local/storage/pic_share/tools/report
set flag [regexp {([a-z0-9A-Z_]*)@(\d+\.\d+\.\d+\.\d+):(.*)} $ip total_param param1 param2 param3]
if {$flag} {
	set user $param1
	set ip $param2
	set path $param3
} else {
	#Parse params like root@10.148.137.174
	set flag [regexp {([a-z0-9A-Z_]*)@(\d+\.\d+\.\d+\.\d+).*} $ip total_param param1 param2]
	#puts $param1
	#puts $param2
	#puts $flag
	if {$flag} {
		set user $param1
		set ip $param2
	} else {
		#Parse params like 10.148.137.174:/usr/local
		set flag [regexp {(\d+\.\d+\.\d+\.\d+):(.*)} $ip total_param param1 param2]
		if {$flag} {
			set ip $param1
			set path $param2
		}
	}
}

# SSH
spawn ssh $user@$ip -q
try_password $path 

interact