Module: RailsPwnerer::Util
- Extended by:
- Base
- Defined in:
- lib/rails_pwnerer/util/main.rb,
lib/rails_pwnerer/util/kill_process_set.rb
Class Method Summary collapse
-
.kill_process_set(kill_script, pid_patterns, process_patterns, options = {}) ⇒ Object
Complex procedure for killing a process or a bunch of process replicas kill_command is the script that’s supposed to kill the process / processes (tried first) pid_patters are globs identifying PID files (a file can match any of the patterns) process_patterns are strings that should show on a command line (a process must match all) options: :verbose - display what gets killed :script_delay - the amount of seconds to sleep after launching the kill script :force_script - the kill script is executed even if there are no PID files.
Methods included from Base
_setup_unix, _setup_windows, all_packages, all_packages_without_caching, atomic_erase, atomic_read, atomic_write, best_package_matching, check_rails_root, control_boot_script, cpu_cores, current_user, gem_exists?, gid_for_username, group_for_username, hook_boot_script, install_gem, install_gems, install_package, install_package_impl, install_package_matching, install_packages, kill_tree, os_distro, package_info_hash, path_to_boot_script, path_to_boot_script_defaults, path_to_gem, process_info, prompt_user_for_password, remove_package, remove_packages, search_packages, uid_for_username, unroll_collection, update_all_packages, update_all_packages_impl, update_gems, update_package_metadata, upgrade_gem, upgrade_gems, upgrade_package, upgrade_package_impl, upgrade_packages, with_package_source, with_temp_dir
Class Method Details
.kill_process_set(kill_script, pid_patterns, process_patterns, options = {}) ⇒ Object
Complex procedure for killing a process or a bunch of process replicas kill_command is the script that’s supposed to kill the process / processes (tried first) pid_patters are globs identifying PID files (a file can match any of the patterns) process_patterns are strings that should show on a command line (a process must match all)
options:
:verbose - display what gets killed
:script_delay - the amount of seconds to sleep after launching the kill script
:force_script - the kill script is executed even if there are no PID files
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# File 'lib/rails_pwnerer/util/kill_process_set.rb', line 12 def self.kill_process_set(kill_script, pid_patterns, process_patterns, = {}) # Phase 1: kill order (only if there's a PID file) pid_patterns = [pid_patterns] unless pid_patterns.kind_of? Enumerable unless [:force_script] pid_files = pid_patterns.map { |pattern| Dir.glob(pattern) }.flatten end if [:force_script] or !(pid_files.empty? or kill_script.nil?) print "Issuing kill order: #{kill_script}\n" if [:verbose] success = Kernel.system kill_script unless kill_script.nil? if !success and [:verbose] print "Kill order failed with exit code #{$CHILD_STATUS.exitstatus}\n" end deadline_time = Time.now + ([:script_delay] || 0.5) while Time.now < deadline_time pid_files = pid_patterns.map { |pattern| Dir.glob(pattern) }.flatten break if pid_files.empty? sleep 0.05 end end # Phase 2: look through PID files and issue kill orders pinfo = process_info() pid_files = pid_patterns.map { |pattern| Dir.glob(pattern) }.flatten pid_files.each do |fname| begin pid = File.open(fname, 'r') { |f| f.read.strip! } process_cmdline = pinfo[pid][:cmdline] # avoid killing innocent victims if pinfo[pid].nil? or process_patterns.all? { |pattern| process_cmdline.index pattern } print "Killing #{pid}: #{process_cmdline}\n" if [:verbose] kill_tree pid.to_i end rescue # just in case the file gets wiped before we see it end begin print "Deleting #{fname}\n" if [:verbose] File.delete fname if File.exists? fname rescue # prevents crashing if the file is wiped after we call exists? end end # Phase 3: look through the process table and kill anything that looks good pinfo = process_info() pinfo.each do |pid, info| next unless process_patterns.all? { |pattern| info[:cmdline].index pattern } print "Killing #{pid}: #{pinfo[pid][:cmdline]}\n" if [:verbose] kill_tree pid.to_i end end |