diff options
| -rwxr-xr-x | lclipd.lua | 103 |
1 files changed, 70 insertions, 33 deletions
@@ -33,12 +33,13 @@ local sys_stat = require("posix.sys.stat") local unistd = require("posix.unistd") local posix_syslog = require("posix.syslog") local sqlite3 = require("lsqlite3") +local posix_wait = require("posix.sys.wait") local sql_create_table = [=[ create table if not exists lclipd ( id integer primary key, content text unique not null, - dateAdded integer not null + dateAdded integer unique not null ); ]=] @@ -56,6 +57,7 @@ begin end; ]=] +-- We are deleting old entries in groups of 20 instead of one by one local sql_old_reap_trigger = [=[ create trigger if not exists hist_old_reap before insert on lclipd begin @@ -63,7 +65,7 @@ begin where id = ( select id from lclipd order by timeAdded - asc + asc limit 20 ) and ( select count(id) @@ -79,6 +81,9 @@ insert into lclipd(content,dateAdded) values('XXX', unixepoch()); local pid_file = "/tmp/lclipd.pid" local db_file_name = "/tmp/lclipd_db_name" +--- A sleep function +local function sleep(n) os.execute("sleep " .. tonumber(n)) end + --- We are not longer running. local function remove_pid_file() os.remove(pid_file) end @@ -103,6 +108,11 @@ local function log_to_syslog(log_str, log_priority) posix_syslog.closelog() end +local function check_uid_gid() + log_to_syslog(tostring(unistd.getuid()) .. ":" .. tostring(unistd.getgid()), + posix_syslog.LOG_INFO) +end + --- Checks to make sure that the pid file for clipd does not exist. local function check_pid_file() local f = sys_stat.stat(pid_file) @@ -124,30 +134,40 @@ end --- Get the clipboard content from X or wayland. local function get_clipboard_content() - -- clipnotify exits when there is a new entry on the clipboard - -- so we do want a blocking call here - os.execute("clipnotify") - - -- we dont care whether all the calls to clipboard progs succeed - -- or not. so we just mask the errors. - local _, handle_x = pcall(io.popen, "xsel -ob") - handle_x:flush() - local last_clip_entry_x = handle_x:read("*a") - - local _, handle_w = pcall(io.popen, "wl-paste") - handle_w:flush() - local last_clip_entry_w = handle_w:read("*a") - - -- local _, handle_p = pcall(io.popen, "pyclip paste") - -- handle_p:flush() - -- local last_clip_entry_p = handle_p:read("*a") - - -- if last_clip_entry_p ~= "" then - -- return last_clip_entry_p - if last_clip_entry_x ~= "" then - return last_clip_entry_x - elseif last_clip_entry_w ~= "" then - return last_clip_entry_w + -- if we use a plain os.execute for clipnotify we wont get the ctrl-c + -- when it is pressed. doing it manually though the parent receives + -- the SIGINT just fine. + local pid, errmsg = unistd.fork() + if pid == nil then + log_to_syslog("could not fork", posix_syslog.LOG_CRIT) + log_to_syslog(errmsg, posix_syslog.LOG_CRIT) + remove_pid_file() + os.exit(1) + elseif pid == 0 then + -- clipnotify exits when there is a new entry on the clipboard + -- so we do want a blocking call here + os.execute("clipnotify") + os.exit(0) + else + posix_wait.wait(pid) + -- we dont care whether all the calls to clipboard progs succeed + -- or not. so we just mask the errors. + local _, handle_x = pcall(io.popen, "xsel -ob") + local last_clip_entry_x = handle_x:read("*a") + + local _, handle_w = pcall(io.popen, "wl-paste") + local last_clip_entry_w = handle_w:read("*a") + + local _, handle_p = pcall(io.popen, "pyclip paste") + local last_clip_entry_p = handle_p:read("*a") + + if last_clip_entry_p ~= "" then + return last_clip_entry_p + elseif last_clip_entry_x ~= "" and last_clip_entry_x ~= nil then + return last_clip_entry_x + elseif last_clip_entry_w ~= "" and last_clip_entry_w ~= nil then + return last_clip_entry_w + end end end @@ -155,7 +175,7 @@ end local function get_sqlite_handle() local tmp_db_name = "/tmp/" .. io.popen( - "tr -dc A-Za-z0-9 </dev/urandom | head -c 13"):read( + "tr -dc A-Za-z0-9 </dev/urandom | head -c 17"):read( "*a") log_to_syslog(tmp_db_name, posix_syslog.LOG_INFO) local clipDB = sqlite3.open(tmp_db_name, @@ -207,8 +227,13 @@ local function loop(clip_hist_size) lclip_exit(1) end + log_to_syslog("starting the main loop", posix_syslog.LOG_INFO) while true do local clip_content = get_clipboard_content() + -- remove trailing/leading whitespace + if clip_content == nil then goto continue end + clip_content = string.gsub(clip_content, '^%s*(.-)%s*$', '%1') + sleep(0.2) if clip_content ~= nil then local insert_string = sql_insert:gsub("XXX", clip_content) @@ -217,19 +242,31 @@ local function loop(clip_hist_size) log_to_syslog(tostring(return_code), posix_syslog.LOG_WARNING) end end + ::continue:: end end --- The entry point. local function main() - signal.signal(signal.SIGINT, function(signum) os.exit(128 + signum) end) + -- local pgrpid = unistd.getpgrp() + signal.signal(signal.SIGINT, function(signum) + remove_pid_file() + io.write("\n") + os.exit(128 + signum) + end) + signal.signal(signal.SIGTERM, function(signum) + remove_pid_file() + io.write("\n") + os.exit(128 + signum) + end) local args = parser:parse() - check_pid_file() - write_pid_file() + -- check_pid_file() + -- write_pid_file() + check_uid_gid() local status, err = pcall(loop, args["hist_size"]) - if ~status then log_to_syslog(err, posix_syslog.LOG_CRIT) end - remove_pid_file() + if status ~= true then log_to_syslog(err, posix_syslog.LOG_CRIT) end end -main() +local status, _ = pcall(main) +if status ~= true then remove_pid_file() end |