diff options
Diffstat (limited to 'bin/clipd')
| -rwxr-xr-x | bin/clipd | 83 |
1 files changed, 75 insertions, 8 deletions
@@ -4,6 +4,15 @@ -- 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_getuid = require("posix.unistd.getuid") +local unistd_getgid = require("posix.unistd.getgid") +local unistd_getpid = require("posix.unistd.getpid") +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 @@ -24,12 +33,6 @@ local function default_luarocks_modules() end default_luarocks_modules() -local string = require("string") -local signal = require("posix.signal") -local argparse = require("argparse") - -signal.signal(signal.SIGINT, function(signum) os.exit(128 + signum) end) - local function sleep(n) os.execute("sleep " .. tonumber(n)) end local function trim(s) return s:gsub("^%s+", ""):gsub("%s+$", "") end @@ -38,6 +41,60 @@ 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 & sys_stat.S_IRWXU ~= 0 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("/var/run/clipd.pid") + if f ~= nil then + log_to_syslog("clipd is already running", posix_syslog.LOG_CRIT) + os.exit(1) + end +end + +local function write_pid_file() + local f = io.open("/var/run/clipd.pid") + 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 @@ -83,5 +140,15 @@ local function loop(clip_hist, clip_hist_size) end end -local args = parser:parse() -loop(args["hist_file"], args["hist_size"]) +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() |