-/* Prosody IM v0.4
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+/* Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
-- Copyright (C) 2009 Tobias Markmann
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
* POSIX support functions for Lua
*/
-#define MODULE_VERSION "0.3.0"
+#define MODULE_VERSION "0.3.5"
#include <stdlib.h>
+#include <math.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/utsname.h>
#include <fcntl.h>
#include <syslog.h>
{
pid_t pid;
-
+
if ( getppid() == 1 )
{
lua_pushboolean(L, 0);
lua_pushstring(L, "already-daemonized");
return 2;
}
-
+
/* Attempt initial fork */
if((pid = fork()) < 0)
{
lua_pushnumber(L, pid);
return 2;
}
-
+
/* and we are the child process */
if(setsid() == -1)
{
const char * const facility_strings[] = {
"auth",
+#if !(defined(sun) || defined(__sun))
"authpriv",
+#endif
"cron",
"daemon",
+#if !(defined(sun) || defined(__sun))
"ftp",
+#endif
"kern",
"local0",
"local1",
};
int facility_constants[] = {
LOG_AUTH,
+#if !(defined(sun) || defined(__sun))
LOG_AUTHPRIV,
+#endif
LOG_CRON,
LOG_DAEMON,
+#if !(defined(sun) || defined(__sun))
LOG_FTP,
+#endif
LOG_KERN,
LOG_LOCAL0,
LOG_LOCAL1,
exist, the results are undefined. Most portable is to use a string
constant.
" -- syslog manpage
-*/
+*/
char* syslog_ident = NULL;
int lc_syslog_open(lua_State* L)
facility = facility_constants[facility];
luaL_checkstring(L, 1);
-
+
if(syslog_ident)
free(syslog_ident);
-
+
syslog_ident = strdup(lua_tostring(L, 1));
-
+
openlog(syslog_ident, LOG_PID, facility);
return 0;
}
{
uid = lua_tonumber(L, 1);
}
-
+
if(uid>-1)
{
/* Ok, attempt setuid */
return 1;
}
}
-
+
/* Seems we couldn't find a valid UID to switch to */
lua_pushboolean(L, 0);
lua_pushstring(L, "invalid-uid");
{
gid = lua_tonumber(L, 1);
}
-
+
if(gid>-1)
{
/* Ok, attempt setgid */
return 1;
}
}
-
+
/* Seems we couldn't find a valid GID to switch to */
lua_pushboolean(L, 0);
lua_pushstring(L, "invalid-gid");
return 2;
}
+int lc_initgroups(lua_State* L)
+{
+ int ret;
+ gid_t gid;
+ struct passwd *p;
+
+ if(!lua_isstring(L, 1))
+ {
+ lua_pushnil(L);
+ lua_pushstring(L, "invalid-username");
+ return 2;
+ }
+ p = getpwnam(lua_tostring(L, 1));
+ if(!p)
+ {
+ lua_pushnil(L);
+ lua_pushstring(L, "no-such-user");
+ return 2;
+ }
+ if(lua_gettop(L) < 2)
+ lua_pushnil(L);
+ switch(lua_type(L, 2))
+ {
+ case LUA_TNIL:
+ gid = p->pw_gid;
+ break;
+ case LUA_TNUMBER:
+ gid = lua_tointeger(L, 2);
+ break;
+ default:
+ lua_pushnil(L);
+ lua_pushstring(L, "invalid-gid");
+ return 2;
+ }
+ ret = initgroups(lua_tostring(L, 1), gid);
+ switch(errno)
+ {
+ case 0:
+ lua_pushboolean(L, 1);
+ lua_pushnil(L);
+ break;
+ case ENOMEM:
+ lua_pushnil(L);
+ lua_pushstring(L, "no-memory");
+ break;
+ case EPERM:
+ lua_pushnil(L);
+ lua_pushstring(L, "permission-denied");
+ break;
+ default:
+ lua_pushnil(L);
+ lua_pushstring(L, "unknown-error");
+ }
+ return 2;
+}
+
+int lc_umask(lua_State* L)
+{
+ char old_mode_string[7];
+ mode_t old_mode = umask(strtoul(luaL_checkstring(L, 1), NULL, 8));
+
+ snprintf(old_mode_string, sizeof(old_mode_string), "%03o", old_mode);
+ old_mode_string[sizeof(old_mode_string)-1] = 0;
+ lua_pushstring(L, old_mode_string);
+
+ return 1;
+}
+
+int lc_mkdir(lua_State* L)
+{
+ int ret = mkdir(luaL_checkstring(L, 1), S_IRUSR | S_IWUSR | S_IXUSR
+ | S_IRGRP | S_IWGRP | S_IXGRP
+ | S_IROTH | S_IXOTH); /* mode 775 */
+
+ lua_pushboolean(L, ret==0);
+ if(ret)
+ {
+ lua_pushstring(L, strerror(errno));
+ return 2;
+ }
+ return 1;
+}
+
/* Like POSIX's setrlimit()/getrlimit() API functions.
- *
+ *
* Syntax:
* pposix.setrlimit( resource, soft limit, hard limit)
- *
+ *
* Any negative limit will be replace with the current limit by an additional call of getrlimit().
- *
+ *
* Example usage:
* pposix.setrlimit("NOFILE", 1000, 2000)
*/
if (!strcmp(s, "CPU")) return RLIMIT_CPU;
if (!strcmp(s, "DATA")) return RLIMIT_DATA;
if (!strcmp(s, "FSIZE")) return RLIMIT_FSIZE;
- if (!strcmp(s, "MEMLOCK")) return RLIMIT_MEMLOCK;
if (!strcmp(s, "NOFILE")) return RLIMIT_NOFILE;
+ if (!strcmp(s, "STACK")) return RLIMIT_STACK;
+#if !(defined(sun) || defined(__sun))
+ if (!strcmp(s, "MEMLOCK")) return RLIMIT_MEMLOCK;
if (!strcmp(s, "NPROC")) return RLIMIT_NPROC;
if (!strcmp(s, "RSS")) return RLIMIT_RSS;
- if (!strcmp(s, "STACK")) return RLIMIT_STACK;
+#endif
return -1;
}
lua_pushboolean(L, 0);
lua_pushstring(L, "incorrect-arguments");
}
-
+
resource = luaL_checkstring(L, 1);
softlimit = luaL_checkinteger(L, 2);
hardlimit = luaL_checkinteger(L, 3);
-
+
rid = string2resource(resource);
if (rid != -1) {
struct rlimit lim;
struct rlimit lim_current;
-
+
if (softlimit < 0 || hardlimit < 0) {
if (getrlimit(rid, &lim_current)) {
lua_pushboolean(L, 0);
return 2;
}
}
-
+
if (softlimit < 0) lim.rlim_cur = lim_current.rlim_cur;
else lim.rlim_cur = softlimit;
if (hardlimit < 0) lim.rlim_max = lim_current.rlim_max;
else lim.rlim_max = hardlimit;
-
+
if (setrlimit(rid, &lim)) {
lua_pushboolean(L, 0);
lua_pushstring(L, "setrlimit-failed");
const char *resource = NULL;
int rid = -1;
struct rlimit lim;
-
+
if (arguments != 1) {
lua_pushboolean(L, 0);
lua_pushstring(L, "invalid-arguments");
return 2;
}
-
+
resource = luaL_checkstring(L, 1);
rid = string2resource(resource);
if (rid != -1) {
return 3;
}
+int lc_abort(lua_State* L)
+{
+ abort();
+ return 0;
+}
+
+int lc_uname(lua_State* L)
+{
+ struct utsname uname_info;
+ if(uname(&uname_info) != 0)
+ {
+ lua_pushnil(L);
+ lua_pushstring(L, strerror(errno));
+ return 2;
+ }
+ lua_newtable(L);
+ lua_pushstring(L, uname_info.sysname);
+ lua_setfield(L, -2, "sysname");
+ lua_pushstring(L, uname_info.nodename);
+ lua_setfield(L, -2, "nodename");
+ lua_pushstring(L, uname_info.release);
+ lua_setfield(L, -2, "release");
+ lua_pushstring(L, uname_info.version);
+ lua_setfield(L, -2, "version");
+ lua_pushstring(L, uname_info.machine);
+ lua_setfield(L, -2, "machine");
+ return 1;
+}
+
/* Register functions */
int luaopen_util_pposix(lua_State *L)
{
- lua_newtable(L);
+ luaL_Reg exports[] = {
+ { "abort", lc_abort },
- lua_pushcfunction(L, lc_daemonize);
- lua_setfield(L, -2, "daemonize");
+ { "daemonize", lc_daemonize },
- lua_pushcfunction(L, lc_syslog_open);
- lua_setfield(L, -2, "syslog_open");
+ { "syslog_open", lc_syslog_open },
+ { "syslog_close", lc_syslog_close },
+ { "syslog_log", lc_syslog_log },
+ { "syslog_setminlevel", lc_syslog_setmask },
- lua_pushcfunction(L, lc_syslog_close);
- lua_setfield(L, -2, "syslog_close");
+ { "getpid", lc_getpid },
+ { "getuid", lc_getuid },
+ { "getgid", lc_getgid },
- lua_pushcfunction(L, lc_syslog_log);
- lua_setfield(L, -2, "syslog_log");
+ { "setuid", lc_setuid },
+ { "setgid", lc_setgid },
+ { "initgroups", lc_initgroups },
- lua_pushcfunction(L, lc_syslog_setmask);
- lua_setfield(L, -2, "syslog_setminlevel");
+ { "umask", lc_umask },
- lua_pushcfunction(L, lc_getpid);
- lua_setfield(L, -2, "getpid");
+ { "mkdir", lc_mkdir },
- lua_pushcfunction(L, lc_getuid);
- lua_setfield(L, -2, "getuid");
- lua_pushcfunction(L, lc_getgid);
- lua_setfield(L, -2, "getgid");
+ { "setrlimit", lc_setrlimit },
+ { "getrlimit", lc_getrlimit },
- lua_pushcfunction(L, lc_setuid);
- lua_setfield(L, -2, "setuid");
- lua_pushcfunction(L, lc_setgid);
- lua_setfield(L, -2, "setgid");
-
- lua_pushcfunction(L, lc_setrlimit);
- lua_setfield(L, -2, "setrlimit");
-
- lua_pushcfunction(L, lc_getrlimit);
- lua_setfield(L, -2, "getrlimit");
+ { "uname", lc_uname },
+
+ { NULL, NULL }
+ };
+
+ luaL_register(L, "pposix", exports);
lua_pushliteral(L, "pposix");
lua_setfield(L, -2, "_NAME");
lua_pushliteral(L, MODULE_VERSION);
lua_setfield(L, -2, "_VERSION");
-
+
return 1;
-};
+}
projects / prosody.git / blobdiff