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28 lines
1.4 KiB
Bash
Executable file
28 lines
1.4 KiB
Bash
Executable file
#!/bin/bash
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export TEXTDOMAIN=pprompt-iiab
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. gettext.sh
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# bash syntax "function check_user_pwd() {" was removed, as it prevented all
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# lightdm/graphical logins (incl autologin) on Raspbian: #1252 -> PR #1253
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check_user_pwd() {
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# $meth (hashing method) is typically '6' which implies 5000 rounds
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# of SHA-512 per /etc/login.defs -> /etc/pam.d/common-password
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meth=$(sudo grep "^$1:" /etc/shadow | cut -d: -f2 | cut -d$ -f2)
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salt=$(sudo grep "^$1:" /etc/shadow | cut -d: -f2 | cut -d$ -f3)
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hash=$(sudo grep "^$1:" /etc/shadow | cut -d: -f2 | cut -d$ -f4)
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[ $(python3 -c "import crypt; print(crypt.crypt('$2', '\$$meth\$$salt'))") == "\$$meth\$$salt\$$hash" ]
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}
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# Credit to the folks at the Raspberry Pi Foundation
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check_hash() {
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if ! id -u iiab-admin > /dev/null 2>&1 ; then return 0 ; fi
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if grep -q "^PasswordAuthentication\s*no" /etc/ssh/sshd_config ; then return 0 ; fi
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if check_user_pwd "iiab-admin" "{{ iiab_admin_published_pwd }}"; then
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zenity --warning --width=600 --text="SSH is enabled and the default password for user 'iiab-admin' is in use.\n\nTHIS IS A SECURITY RISK - please change its password using IIAB's Admin Console (http://box.lan/admin) -> Utilities -> Change Password.\n\nSee 'What are the default passwords?' at http://FAQ.IIAB.IO"
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fi
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}
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systemctl is-active {{ sshd_service }} > /dev/null && check_hash
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unset check_hash
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