diff options
Diffstat (limited to '')
| -rwxr-xr-x | lclipd | 158 |
1 files changed, 158 insertions, 0 deletions
@@ -0,0 +1,158 @@ +#!/usr/bin/env lua5.3 + +-- needs xsel, clipnotify +-- luarocks-5.3 install --local luaposix +-- luarocks-5.3 install --local argparse +-- cat .clip_history | dmenu -l 10 | xsel -ib +local string = require("string") +local signal = require("posix.signal") +local argparse = require("argparse") +local sys_stat = require("posix.sys.stat") +local unistd = require("posix.unistd") +local posix_syslog = require("posix.syslog") + +local function default_luarocks_modules() + local luarocks_handle = io.popen("luarocks-5.3 path --bin") + local path_b = false + local cpath_b = false + for line in luarocks_handle:lines() do + local path = string.match(line, "LUA_PATH%s*=%s*('.+')") + local cpath = string.match(line, "LUA_CPATH%s*=%s*('.+')") + if path ~= nil then + package.path = package.path .. ";" .. string.sub(path, 2, -2) + end + if cpath ~= nil then + package.cpath = package.cpath .. ";" .. string.sub(cpath, 2, -2) + end + end + + if path_b then os.exit(1) end + if cpath_b then os.exit(1) end +end +default_luarocks_modules() + +local function sleep(n) os.execute("sleep " .. tonumber(n)) end +local function trim(s) return s:gsub("^%s+", ""):gsub("%s+$", "") end + +local parser = argparse() +parser:option("-s --hist_size", "history file size", 200) +parser:option("-f --hist_file", "history file location", + "/home/devi/.clip_history") + +local function log_to_syslog(log_str, log_priority) + posix_syslog.openlog("clipd", + posix_syslog.LOG_NDELAY | posix_syslog.LOG_PID, + posix_syslog.LOG_LOCAL0) + posix_syslog.syslog(log_priority, log_str) + posix_syslog.closelog() +end + +local function check_clip_hist_perms(clip_hist) + local uid = unistd.getuid() + local gid = unistd.getgid() + for k, v in pairs(sys_stat.stat(clip_hist)) do + if k == "st_uid" then + if v ~= uid then + log_to_syslog( + "clipboard history file owned by uid other than the clipd uid", + posix_syslog.LOG_CRIT) + os.exit(1) + end + end + if k == "st_gid" then + if v ~= gid then + log_to_syslog( + "clipboard history file owned by gid other than the clipd gid", + posix_syslog.LOG_CRIT) + os.exit(1) + end + end + if k == "st_mode" then + if v and (sys_stat.S_IRUSR or sys_stat.S_IWUSR) ~= + (sys_stat.S_IRUSR or sys_stat.S_IWUSR) then + log_to_syslog( + "file permissions are too open. they need to be 0600.", + posix_syslog.LOG_CRIT) + os.exit(1) + end + end + end +end + +local function check_pid_file() + local f = sys_stat.stat("/var/run/clipd.pid") + if f ~= nil then + log_to_syslog("clipd is already running", posix_syslog.LOG_CRIT) + os.exit(1) + end +end + +-- FIXME- we cant write to /var/run since we are running as non-root user +local function write_pid_file() + local f = io.open("/var/run/clipd.pid", "w") + if f == nil then + log_to_syslog("cant open pid file for writing", posix_syslog.LOG_CRIT) + os.exit(1) + end + f.write(unistd.getpid()) +end + +local function remove_pid_file() end + +local function loop(clip_hist, clip_hist_size) + local clips_table = {} + local hist_current_count = 0 + + local hist_file = io.open(clip_hist, "r") + if hist_file ~= nil then + for line in hist_file:lines() do + if line ~= "\n" and line ~= "" and line ~= "\r\n" and line ~= " " then + clips_table[line] = true + hist_current_count = hist_current_count + 1 + end + end + end + hist_file:close() + + while true do + local wait_for_event = io.popen("clipnotify") + local handle = io.popen("xsel -ob") + local last_clip_entry = handle:read("*a") + + if last_clip_entry[-1] == "\n" then + clips_table[string.sub(last_clip_entry, 0, + string.len(last_clip_entry))] = true + else + clips_table[last_clip_entry] = true; + end + hist_current_count = hist_current_count + 1 + + if hist_current_count >= tonumber(clip_hist_size) then + table.remove(clips_table, 1) + hist_current_count = hist_current_count - 1 + end + + hist_file = io.open(clip_hist, "w") + for k, _ in pairs(clips_table) do + if clips_table[k] then hist_file:write(trim(k) .. "\n") end + end + hist_file:close() + + wait_for_event:close() + handle:close() + sleep(.2) + end +end + +local function main() + signal.signal(signal.SIGINT, function(signum) os.exit(128 + signum) end) + local args = parser:parse() + check_clip_hist_perms(args["hist_file"]) + check_pid_file() + -- write_pid_file() + local status, err = pcall(loop(args["hist_file"], args["hist_size"])) + if ~status then log_to_syslog(err, posix_syslog.LOG_CRIT) end + remove_pid_file() +end + +main() |