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# Zeres-0 (Bash)
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This directory contains logic for zeres-0 to process standardized bash/shell downstream
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The `UNLEASH` file is the first thing invoked by zernit
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@ -1,5 +1,5 @@
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#!/bin/sh
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# All rights reserved by Jacob Hrbek <kreyren@rixotstudio.cz> in 04/2020
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# All rights reserved by Jacob Hrbek <kreyren@rixotstudio.cz> in 04/2020 (Prepared for four freedom respecting license)
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# Peer-reviewed by: <YOUR_NAME> <YOUR_EMAIL> in <DATE+TIME+TIMEZONE>
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# shellcheck shell=sh
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@ -291,6 +291,18 @@ else
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die 255 "Identifying system"
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fi
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# Define hostname
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# NOTICE: Variable 'HOSTNAME' is not defined on POSIX sh
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if command -v hostname 1>/dev/null; then
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HOSTNAME="$(hostname)"
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elif [ -s /etc/hostname ]; then
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HOSTNAME="$(cat /etc/hostname)"
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elif ! command -v hostname 1>/dev/null && [ ! -s /etc/hostname ]; then
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die false "Unable to determine the hostname from command 'hostname' (which doesn't exists) and from file /etc/hostname (that doesn't exists or is blank)"
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else
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die unexpected "processing hostname"
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fi
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# Argument management
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while [ "$#" -gt 0 ]; do case "$1" in
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install-deps)
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@ -0,0 +1,5 @@
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# Wrappers
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Directory dedicated to various wrapper functions
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Wrapper meaning that they wrap another function to handle it's functionality
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@ -0,0 +1,57 @@
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#!/bin/false
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# - Used only for sourcing
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# Created by Jacob Hrbek <kreyren@rixotstudio.cz> as All Rights Reserved in 08.07.2020 03:32:02 CET
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# Peer-reviewed by <NAME> <EMAIL> in <DATE> <TIME> <TIMEZONE>
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# shellcheck shell=sh # Written to be posix-compatible
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# DNM: Specify somewhere
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# shellcheck source=somewhere
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###! Sanitized wrapper to check if command is executable in it's environment
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###! Example usage:
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###!
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###! if cmd_check bash; then
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###! printf '%s\n' "Command 'bash' is executable! ^o^"
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###! elif ! cmd_check bash; then
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###! printf '%s\n' "Command 'bash' is not executable! :("
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###! else
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###! die bug "Function 'cmd_check' returned unexpected exit code"
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###! fi
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# Check executability of a program
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cmd_check() { funcname="cmd_check"
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# FIXME-STUB: This is a stub implementation
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if command; then
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true
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elif ! command; then
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die fixme "Command 'command' is not executable on this system when runtime requested function '$funcname', we are unable to continue"
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else
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die unexpected "Unexpected happend while checking command 'command' in $funcname"
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fi
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if command -v "$1" 1>/dev/null; then
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edebug cmd_check "Command '$1' has been confirmed to be executable on this system"
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case "$KERNEL" in
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"linux")
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unset funcname
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return 0 ;;
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"windows")
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unset funcname
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return 1 ;;
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*) die fixme "Kernel '$KERNEL' is not implemented in function '$funcname'"
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esac
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elif ! command -v "$1" 1>/dev/null; then
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edebug cmd_check "Command '$1' is not executable on this system"
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case "$KERNEL" in
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"linux")
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unset funcname
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return 1 ;;
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"windows")
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unset funcname
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return 0 ;;
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*) die fixme "Kernel '$KERNEL' is not implemented in function '$funcname'"
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esac
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else
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die unexpected "Command 'command' returned an unexpected result in function '$funcname'"
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fi
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}
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#!/bin/false
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# - Used only for sourcing
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# Created by Jacob Hrbek <kreyren@rixotstudio.cz> as All Rights Reserved in 08.07.2020 03:32:02 CET
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# Peer-reviewed by <NAME> <EMAIL> in <DATE> <TIME> <TIMEZONE>
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# shellcheck shell=sh # Written to be posix-compatible
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# DNM: Specify somewhere
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# shellcheck source=somewhere
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###! Sanitized wrapper to create a directory
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emkdir() { funcname="emkdir"
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edebug "$funcname" "Instructed to create directory at path '$1'"
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case "$KERNEL" in
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"linux")
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if [ -d "$1" ]; then
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edebug "$funcname" "Directory '$1' already exists, no need to create it"
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elif [ ! -d "$1" ]; then
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einfo "Creating a new directory in '$1' as requested"
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# Create the directory
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if cmd_check "$MKDIR"; then
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mkdir "$1" || die 1 "Function '$funcname' called from '$myName' is unable to create a new directory in '$1'"
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return 0
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elif ! cmd_check "$MKDIR"; then
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die false "Unable to create a new directory, because neither neither of supported command(s) are available on this system: mkdir"
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else
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die bug "checking for command used to create directories in $funcname"
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fi
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fi
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;;
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*) die fixme "Function '$funcname' is not implemented for kernel '$KERNEL'"
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esac
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die security "Function '$funcname' escaped sanitization"
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}
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#!/bin/false
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# - Used only for sourcing
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# Created by Jacob Hrbek <kreyren@rixotstudio.cz> as All Rights Reserved in 08.07.2020 03:32:02 CET
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# Peer-reviewed by <NAME> <EMAIL> in <DATE> <TIME> <TIMEZONE>
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# shellcheck shell=sh # Written to be posix-compatible
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# DNM: Specify somewhere
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# shellcheck source=src/downstream-classes/zeres-0/bash/UNLEASH.sh
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###! Sanitized wrapper to create a directory
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# Root elevation on-demand
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# SYNOPSIS: rootme [reason for privileged access] [command]
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# FIXME-QA: Needs better implementation
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invoke_privileged() { funcname="invoke_privileged"
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if [ "$privileged" = "false" ]; then
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die fixme "Implement $funcname to execute '$2' as privileged user, invoke this script as root as a workaround"
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edebug "Script '$myName' has been executed from an unprivileged user, deducing possible elevation"
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# Ask for permission to execute the command
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"$PRINTF" "$INVOKE_PRIVILEGED_FORMAT_STRING_QUESTION" "$1"
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while true; do
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"$PRINTF" '%s\n' "Requesting permission to invoke '$2' as privileged user (y/n)"
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read -r privilege_granted
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case "$privilege_granted" in
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"Y"|"y"|"YES"|"yes")
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edebug "User granted permission to invoke '$2' as privileged user"
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unset privilege_granted
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break
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;;
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"N"|"n"|"NO"|"no")
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die 3 "Unable to execute '$2' as privileged user"
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;;
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*) "$PRINTF" '%s\n' "Input '$privilege_granted' is not recognized, try again.."
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esac
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done
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# Check what we can use for executing command as privileged user
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unset privilege_commands
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# FIXME-QA: Fix duplicate code
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## Check for sudo
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if command -v "$SUDO" 1>/dev/null; then
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privilege_commands="$privilege_commands sudo"
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elif ! command -v "$SUDO" 1>/dev/null; then
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edebug "Command '$SUDO' is not executable in $funcname, unable to use it"
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else
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die bug "checking wether command sudo is executable in $funcname"
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fi
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## Check for su
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if command -v "$SU" 1>/dev/null; then
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privilege_commands="$privilege_commands su"
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elif ! command -v "$SU" 1>/dev/null; then
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edebug "Command '$SU' is not executable in $funcname, unable to use it"
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else
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die bug "checking wether command su is executable in $funcname"
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fi
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case "$("$PRINTF" '%s\n' "$privilege_commands" | tr ' ' '\n' | wc -l)" in
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0) die 3 "Neither of supported commands used to invoke command as privileged user '$privilege_commands' are available on this system, unable to invoke '$2'" ;;
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1)
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cmd_count="$("$PRINTF" '%s\n' "$privilege_commands" | sed "s/ //gm")"
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case "$cmd_count" in
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"sudo")
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while true; do
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printf '%s\n' "Requesting permission to use '${SUDO:-sudo}' for invokation of '$2' (y/n)"
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read -r allowed_to_use_sudo
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case "$allowed_to_use_sudo" in
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"Y"|"y"|"YES"|"yes")
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sudo "$2" | die 3 "Unable to execute '$2' with privileged permission"
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break
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;;
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"N"|"n"|"NO"|"no")
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die 3 "Unable to execute '$2' with privileged permission using sudo, because we were not allowed to proceed"
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;;
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*)
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"$PRINTF" '%s\n' "Input '$allowed_to_use_sudo' is not recognized, retrying.."
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unset allowed_to_use_sudo
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esac
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done
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;;
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"su")
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while true; do
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printf '%s\n' "Requesting permission to use '${SUDO:-sudo}' for invokation of '$2' (y/n)"
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read -r allowed_to_use_sudo
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case "$allowed_to_use_sudo" in
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"Y"|"y"|"YES"|"yes")
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su root -c "$2" | die 3 "Unable to execute '$2' with privileged permission"
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break
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;;
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"N"|"n"|"NO"|"no")
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die 3 "Unable to execute '$2' with privileged permission using sudo, because we were not allowed to proceed"
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;;
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*)
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"$PRINTF" '%s\n' "Input '$allowed_to_use_sudo' is not recognized, retrying.."
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unset allowed_to_use_sudo
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esac
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done
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;;
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esac ;;
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2)
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# NOTICE: This is adapted to allow more commands in the future
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while true; do
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printf '%s\n\n' \
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"We found following commands that we can use to execute the command as privileged user:"
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# FIXME: seq might not be available on the system
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# - yes | head -n 3| nl | cut -f1 | while read i; do echo $i; done
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# - awk 'BEGIN{for(i=0;i<10;i++)print i}
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for num in $(seq 1 "$cmd_count" | tr '\n' ' '); do
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for cmd in $privilege_commands; do
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printf "%s\n" "$num. $cmd"
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done
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printf '%s\n' ""
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printf '%s\n' "Which command do you want to use?"
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done
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read -r privilege_choice
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case "$privilege_choice" in
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[1-2])
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die fixme "Choose the appropriate choice, invoke this script as privileged user as a workaround"
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break
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;;
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*)
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printf '%s\n' "Invalid choice '$privilege_choice', retrying.."
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unset privilege_choice
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esac
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done
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# DNM: Implement proper logic
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efixme "Implement better logic here, invoking 'sudo' for testing.."
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sudo "$2" || die 3 "unable to use privileged permission" ;;
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*)
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# FIXME-QA: Implement better output
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die bug "Unexpected value has been returned for variable 'privilege_commands'"
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esac
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elif [ "$privileged" = "true" ]; then
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edebug "Executing '$1' as privileged user"
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unset funcname
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return 0
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fi
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}
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# Use https://github.com/maciejhirsz/json-rust to process?
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# FIXME: Comments and new lines have to be removed for zernit to process this file
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# - We should do this on runtime instead of enforcing comment-less json
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{
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"package": {
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"name": "Some Name",
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"128x128": "https://url.to/thumbnail",
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},
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"license": "some license",
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"shell-compat": {
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"1.1.0": {
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# FIXME: Allow end-users to use packages approved by specified people
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"confirmed by": "Some Name <email> at 30/12/2020 15:00:00 CEST"
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}
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}
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"options": {
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"X": {
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"description": "Enables support for X.org",
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"conflicts": ""
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"conflicts": {
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"option": "wayland" {
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"reasoning": "some reason for conflict"
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}
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}
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},
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"dependencies": {
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# FIXME: Decide if this is the appropriate implementation
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"category/package": {
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"reasoning": "something"
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}
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}
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}
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}
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@ -18,8 +18,6 @@ DEPENDENCIES:
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descrip
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# Trigger zernit backend to resolve metadata and dependencies
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## - Without this zernit will just run this as a script with option to use it's backend on demandtion: Requi
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zernit_init
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red for something
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either-of-these
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some/dependency:0::origin[=1.0.0]
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some/other-dependency:0::origin[=1.0.0]
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