+++ /dev/null
---- a/src/Makefile
-+++ b/src/Makefile
-@@ -12,7 +12,7 @@ CFLAGS= -O2 -Wall $(MYCFLAGS)
- AR= ar rcu
- RANLIB= ranlib
- RM= rm -f
--LIBS= -lm $(MYLIBS)
-+LIBS= -lm -lcrypt $(MYLIBS)
-
- MYCFLAGS=
- MYLDFLAGS=
-@@ -29,7 +29,7 @@ CORE_O= lapi.o lcode.o ldebug.o ldo.o ld
- lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o \
- lundump.o lvm.o lzio.o lnum.o
- LIB_O= lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \
-- lstrlib.o loadlib.o linit.o
-+ lstrlib.o loadlib.o linit.o lposix.o
-
- LUA_T= lua
- LUA_O= lua.o
---- a/src/linit.c
-+++ b/src/linit.c
-@@ -23,6 +23,7 @@ static const luaL_Reg lualibs[] = {
- {LUA_STRLIBNAME, luaopen_string},
- {LUA_MATHLIBNAME, luaopen_math},
- {LUA_DBLIBNAME, luaopen_debug},
-+ {LUA_POSIXLIBNAME, luaopen_posix},
- {NULL, NULL}
- };
-
---- /dev/null
-+++ b/src/lposix.c
-@@ -0,0 +1,1139 @@
-+/*
-+* lposix.c
-+* POSIX library for Lua 5.1.
-+* Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br>
-+* 07 Apr 2006 23:17:49
-+* Clean up and bug fixes by Leo Razoumov <slonik.az@gmail.com> 2006-10-11 <!LR>
-+* Based on original by Claudio Terra for Lua 3.x.
-+* With contributions by Roberto Ierusalimschy.
-+*/
-+
-+#include <sys/stat.h>
-+#include <sys/times.h>
-+#include <sys/types.h>
-+#include <sys/utsname.h>
-+#include <sys/wait.h>
-+
-+#include <dirent.h>
-+#include <errno.h>
-+#include <fcntl.h>
-+#include <glob.h>
-+#include <grp.h>
-+#include <libgen.h>
-+#include <limits.h>
-+#include <poll.h>
-+#include <pwd.h>
-+#include <signal.h>
-+#include <stdio.h>
-+#include <stdlib.h>
-+#include <string.h>
-+#include <syslog.h>
-+#include <time.h>
-+#include <unistd.h>
-+#include <utime.h>
-+
-+#define MYNAME "posix"
-+#define MYVERSION MYNAME " library for " LUA_VERSION " / Jan 2008"
-+
-+#ifndef ENABLE_SYSLOG
-+#define ENABLE_SYSLOG 1
-+#endif
-+
-+#include "lua.h"
-+#include "lualib.h"
-+#include "lauxlib.h"
-+
-+#include "modemuncher.c"
-+
-+/* compatibility with Lua 5.0 */
-+#ifndef LUA_VERSION_NUM
-+static int luaL_checkoption (lua_State *L, int narg, const char *def,
-+ const char *const lst[]) {
-+ const char *name = (def) ? luaL_optstring(L, narg, def) :
-+ luaL_checkstring(L, narg);
-+ int i = luaL_findstring(name, lst);
-+ if (i == -1)
-+ luaL_argerror(L, narg, lua_pushfstring(L, "invalid option '%s'", name));
-+ return i;
-+}
-+#define lua_pushinteger lua_pushnumber
-+#define lua_createtable(L,a,r) lua_newtable(L)
-+#define LUA_FILEHANDLE "FILE*"
-+
-+#define lua_setfield(l,i,k)
-+#define lua_getfield(l,i,k)
-+
-+#endif
-+
-+static const struct { char c; mode_t b; } M[] =
-+{
-+ {'r', S_IRUSR}, {'w', S_IWUSR}, {'x', S_IXUSR},
-+ {'r', S_IRGRP}, {'w', S_IWGRP}, {'x', S_IXGRP},
-+ {'r', S_IROTH}, {'w', S_IWOTH}, {'x', S_IXOTH},
-+};
-+
-+
-+static void pushmode(lua_State *L, mode_t mode)
-+{
-+ char m[9];
-+ int i;
-+ for (i=0; i<9; i++) m[i]= (mode & M[i].b) ? M[i].c : '-';
-+ if (mode & S_ISUID) m[2]= (mode & S_IXUSR) ? 's' : 'S';
-+ if (mode & S_ISGID) m[5]= (mode & S_IXGRP) ? 's' : 'S';
-+ lua_pushlstring(L, m, 9);
-+}
-+
-+typedef void (*Selector)(lua_State *L, int i, const void *data);
-+
-+static int doselection(lua_State *L, int i, int n,
-+ const char *const S[],
-+ Selector F,
-+ const void *data)
-+{
-+ if (lua_isnone(L, i) || lua_istable(L, i))
-+ {
-+ int j;
-+ if (lua_isnone(L, i)) lua_createtable(L,0,n); else lua_settop(L, i);
-+ for (j=0; S[j]!=NULL; j++)
-+ {
-+ lua_pushstring(L, S[j]);
-+ F(L, j, data);
-+ lua_settable(L, -3);
-+ }
-+ return 1;
-+ }
-+ else
-+ {
-+ int k,n=lua_gettop(L);
-+ for (k=i; k<=n; k++)
-+ {
-+ int j=luaL_checkoption(L, k, NULL, S);
-+ F(L, j, data);
-+ lua_replace(L, k);
-+ }
-+ return n-i+1;
-+ }
-+}
-+#define doselection(L,i,S,F,d) (doselection)(L,i,sizeof(S)/sizeof(*S)-1,S,F,d)
-+
-+static int pusherror(lua_State *L, const char *info)
-+{
-+ lua_pushnil(L);
-+ if (info==NULL)
-+ lua_pushstring(L, strerror(errno));
-+ else
-+ lua_pushfstring(L, "%s: %s", info, strerror(errno));
-+ lua_pushinteger(L, errno);
-+ return 3;
-+}
-+
-+static int pushresult(lua_State *L, int i, const char *info)
-+{
-+ if (i==-1) return pusherror(L, info);
-+ lua_pushinteger(L, i);
-+ return 1;
-+}
-+
-+static void badoption(lua_State *L, int i, const char *what, int option)
-+{
-+ luaL_argerror(L, 2,
-+ lua_pushfstring(L, "unknown %s option '%c'", what, option));
-+}
-+
-+static uid_t mygetuid(lua_State *L, int i)
-+{
-+ if (lua_isnone(L, i))
-+ return -1;
-+ else if (lua_isnumber(L, i))
-+ return (uid_t) lua_tonumber(L, i);
-+ else if (lua_isstring(L, i))
-+ {
-+ struct passwd *p=getpwnam(lua_tostring(L, i));
-+ return (p==NULL) ? -1 : p->pw_uid;
-+ }
-+ else
-+ return luaL_typerror(L, i, "string or number");
-+}
-+
-+static gid_t mygetgid(lua_State *L, int i)
-+{
-+ if (lua_isnone(L, i))
-+ return -1;
-+ else if (lua_isnumber(L, i))
-+ return (gid_t) lua_tonumber(L, i);
-+ else if (lua_isstring(L, i))
-+ {
-+ struct group *g=getgrnam(lua_tostring(L, i));
-+ return (g==NULL) ? -1 : g->gr_gid;
-+ }
-+ else
-+ return luaL_typerror(L, i, "string or number");
-+}
-+
-+
-+static int Perrno(lua_State *L) /** errno([n]) */
-+{
-+ int n = luaL_optint(L, 1, errno);
-+ lua_pushstring(L, strerror(n));
-+ lua_pushinteger(L, n);
-+ return 2;
-+}
-+
-+
-+static int Pbasename(lua_State *L) /** basename(path) */
-+{
-+ char b[PATH_MAX];
-+ size_t len;
-+ const char *path = luaL_checklstring(L, 1, &len);
-+ if (len>=sizeof(b)) luaL_argerror(L, 1, "too long");
-+ lua_pushstring(L, basename(strcpy(b,path)));
-+ return 1;
-+}
-+
-+
-+static int Pdirname(lua_State *L) /** dirname(path) */
-+{
-+ char b[PATH_MAX];
-+ size_t len;
-+ const char *path = luaL_checklstring(L, 1, &len);
-+ if (len>=sizeof(b)) luaL_argerror(L, 1, "too long");
-+ lua_pushstring(L, dirname(strcpy(b,path)));
-+ return 1;
-+}
-+
-+
-+static int Pdir(lua_State *L) /** dir([path]) */
-+{
-+ const char *path = luaL_optstring(L, 1, ".");
-+ DIR *d = opendir(path);
-+ if (d == NULL)
-+ return pusherror(L, path);
-+ else
-+ {
-+ int i;
-+ struct dirent *entry;
-+ lua_newtable(L);
-+ for (i=1; (entry = readdir(d)) != NULL; i++)
-+ {
-+ lua_pushstring(L, entry->d_name);
-+ lua_rawseti(L, -2, i);
-+ }
-+ closedir(d);
-+ lua_pushinteger(L, i-1);
-+ return 2;
-+ }
-+}
-+
-+static int Pglob(lua_State *L) /** glob(pattern) */
-+{
-+ const char *pattern = luaL_optstring(L, 1, "*");
-+ glob_t globres;
-+
-+ if (glob(pattern, 0, NULL, &globres))
-+ return pusherror(L, pattern);
-+ else
-+ {
-+ int i;
-+ lua_newtable(L);
-+ for (i=1; i<=globres.gl_pathc; i++) {
-+ lua_pushstring(L, globres.gl_pathv[i-1]);
-+ lua_rawseti(L, -2, i);
-+ }
-+ globfree(&globres);
-+ return 1;
-+ }
-+}
-+
-+static int aux_files(lua_State *L)
-+{
-+ DIR **p = (DIR **)lua_touserdata(L, lua_upvalueindex(1));
-+ DIR *d = *p;
-+ struct dirent *entry;
-+ if (d == NULL) return 0;
-+ entry = readdir(d);
-+ if (entry == NULL)
-+ {
-+ closedir(d);
-+ *p=NULL;
-+ return 0;
-+ }
-+ else
-+ {
-+ lua_pushstring(L, entry->d_name);
-+ return 1;
-+ }
-+}
-+
-+static int dir_gc (lua_State *L)
-+{
-+ DIR *d = *(DIR **)lua_touserdata(L, 1);
-+ if (d!=NULL) closedir(d);
-+ return 0;
-+}
-+
-+static int Pfiles(lua_State *L) /** files([path]) */
-+{
-+ const char *path = luaL_optstring(L, 1, ".");
-+ DIR **d = (DIR **)lua_newuserdata(L, sizeof(DIR *));
-+ if (luaL_newmetatable(L, MYNAME " dir handle"))
-+ {
-+ lua_pushliteral(L, "__gc");
-+ lua_pushcfunction(L, dir_gc);
-+ lua_settable(L, -3);
-+ }
-+ lua_setmetatable(L, -2);
-+ *d = opendir(path);
-+ if (*d == NULL) return pusherror(L, path);
-+ lua_pushcclosure(L, aux_files, 1);
-+ return 1;
-+}
-+
-+
-+static int Pgetcwd(lua_State *L) /** getcwd() */
-+{
-+ char b[PATH_MAX];
-+ if (getcwd(b, sizeof(b)) == NULL) return pusherror(L, ".");
-+ lua_pushstring(L, b);
-+ return 1;
-+}
-+
-+
-+static int Pmkdir(lua_State *L) /** mkdir(path) */
-+{
-+ const char *path = luaL_checkstring(L, 1);
-+ return pushresult(L, mkdir(path, 0777), path);
-+}
-+
-+
-+static int Pchdir(lua_State *L) /** chdir(path) */
-+{
-+ const char *path = luaL_checkstring(L, 1);
-+ return pushresult(L, chdir(path), path);
-+}
-+
-+static int Prmdir(lua_State *L) /** rmdir(path) */
-+{
-+ const char *path = luaL_checkstring(L, 1);
-+ return pushresult(L, rmdir(path), path);
-+}
-+
-+
-+static int Punlink(lua_State *L) /** unlink(path) */
-+{
-+ const char *path = luaL_checkstring(L, 1);
-+ return pushresult(L, unlink(path), path);
-+}
-+
-+static int Plink(lua_State *L) /** link(old,new,[symbolic]) */
-+{
-+ const char *oldpath = luaL_checkstring(L, 1);
-+ const char *newpath = luaL_checkstring(L, 2);
-+ return pushresult(L,
-+ (lua_toboolean(L,3) ? symlink : link)(oldpath, newpath), NULL);
-+}
-+
-+
-+static int Preadlink(lua_State *L) /** readlink(path) */
-+{
-+ char b[PATH_MAX];
-+ const char *path = luaL_checkstring(L, 1);
-+ int n = readlink(path, b, sizeof(b));
-+ if (n==-1) return pusherror(L, path);
-+ lua_pushlstring(L, b, n);
-+ return 1;
-+}
-+
-+
-+static int Paccess(lua_State *L) /** access(path,[mode]) */
-+{
-+ int mode=F_OK;
-+ const char *path=luaL_checkstring(L, 1);
-+ const char *s;
-+ for (s=luaL_optstring(L, 2, "f"); *s!=0 ; s++)
-+ switch (*s)
-+ {
-+ case ' ': break;
-+ case 'r': mode |= R_OK; break;
-+ case 'w': mode |= W_OK; break;
-+ case 'x': mode |= X_OK; break;
-+ case 'f': mode |= F_OK; break;
-+ default: badoption(L, 2, "mode", *s); break;
-+ }
-+ return pushresult(L, access(path, mode), path);
-+}
-+
-+
-+static int myfclose (lua_State *L) {
-+ FILE **p = (FILE **)lua_touserdata(L, 1);
-+ int rc = fclose(*p);
-+ if (rc == 0) *p = NULL;
-+ return pushresult(L, rc, NULL);
-+}
-+
-+static int pushfile (lua_State *L, int id, const char *mode) {
-+ FILE **f = (FILE **)lua_newuserdata(L, sizeof(FILE *));
-+ *f = NULL;
-+ luaL_getmetatable(L, LUA_FILEHANDLE);
-+ lua_setmetatable(L, -2);
-+ lua_getfield(L, LUA_REGISTRYINDEX, "POSIX_PIPEFILE");
-+ if (lua_isnil(L, -1)) {
-+ lua_pop(L, 1);
-+ lua_newtable(L);
-+ lua_pushvalue(L, -1);
-+ lua_pushcfunction(L, myfclose);
-+ lua_setfield(L, -2, "__close");
-+ lua_setfield(L, LUA_REGISTRYINDEX, "POSIX_PIPEFILE");
-+ }
-+ lua_setfenv(L, -2);
-+ *f = fdopen(id, mode);
-+ return (*f != NULL);
-+}
-+
-+static int Ppipe(lua_State *L) /** pipe() */
-+{
-+ int fd[2];
-+ if (pipe(fd)==-1) return pusherror(L, NULL);
-+ if (!pushfile(L, fd[0], "r") || !pushfile(L, fd[1], "w"))
-+ return pusherror(L, "pipe");
-+ return 2;
-+}
-+
-+
-+static int Pfileno(lua_State *L) /** fileno(filehandle) */
-+{
-+ FILE *f = *(FILE**) luaL_checkudata(L, 1, LUA_FILEHANDLE);
-+ return pushresult(L, fileno(f), NULL);
-+}
-+
-+
-+static int Pfdopen(lua_State *L) /** fdopen(fd, mode) */
-+{
-+ int fd = luaL_checkint(L, 1);
-+ const char *mode = luaL_checkstring(L, 2);
-+ if (!pushfile(L, fd, mode))
-+ return pusherror(L, "fdpoen");
-+ return 1;
-+}
-+
-+
-+/* helper func for Pdup */
-+static const char *filemode(int fd)
-+{
-+ const char *m;
-+ int mode = fcntl(fd, F_GETFL);
-+ if (mode < 0)
-+ return NULL;
-+ switch (mode & O_ACCMODE) {
-+ case O_RDONLY: m = "r"; break;
-+ case O_WRONLY: m = "w"; break;
-+ default: m = "rw"; break;
-+ }
-+ return m;
-+}
-+
-+static int Pdup(lua_State *L) /** dup(old,[new]) */
-+{
-+ FILE **oldf = (FILE**)luaL_checkudata(L, 1, LUA_FILEHANDLE);
-+ FILE **newf = (FILE **)lua_touserdata(L, 2);
-+ int fd;
-+ const char *msg = "dup2";
-+ fflush(*newf);
-+ if (newf == NULL) {
-+ fd = dup(fileno(*oldf));
-+ msg = "dup";
-+ } else {
-+ fflush(*newf);
-+ fd = dup2(fileno(*oldf), fileno(*newf));
-+ }
-+
-+ if ((fd < 0) || !pushfile(L, fd, filemode(fd)))
-+ return pusherror(L, msg);
-+ return 1;
-+}
-+
-+
-+static int Pmkfifo(lua_State *L) /** mkfifo(path) */
-+{
-+ const char *path = luaL_checkstring(L, 1);
-+ return pushresult(L, mkfifo(path, 0777), path);
-+}
-+
-+
-+static int runexec(lua_State *L, int use_shell)
-+{
-+ const char *path = luaL_checkstring(L, 1);
-+ int i,n=lua_gettop(L);
-+ char **argv = lua_newuserdata(L,(n+1)*sizeof(char*));
-+ argv[0] = (char*)path;
-+ for (i=1; i<n; i++) argv[i] = (char*)luaL_checkstring(L, i+1);
-+ argv[n] = NULL;
-+ if (use_shell) {
-+ execvp(path, argv);
-+ } else {
-+ execv(path, argv);
-+ }
-+ return pusherror(L, path);
-+}
-+
-+
-+static int Pexec(lua_State *L) /** exec(path,[args]) */
-+{
-+ return runexec(L, 0);
-+}
-+
-+
-+static int Pexecp(lua_State *L) /** execp(path,[args]) */
-+{
-+ return runexec(L, 1);
-+}
-+
-+
-+static int Pfork(lua_State *L) /** fork() */
-+{
-+ return pushresult(L, fork(), NULL);
-+}
-+
-+/* from http://lua-users.org/lists/lua-l/2007-11/msg00346.html */
-+static int Ppoll(lua_State *L) /** poll(filehandle, timeout) */
-+{
-+ struct pollfd fds;
-+ FILE* file = *(FILE**)luaL_checkudata(L,1,LUA_FILEHANDLE);
-+ int timeout = luaL_checkint(L,2);
-+ fds.fd = fileno(file);
-+ fds.events = POLLIN;
-+ return pushresult(L, poll(&fds,1,timeout), NULL);
-+}
-+
-+static int Pwait(lua_State *L) /** wait([pid]) */
-+{
-+ int status;
-+ pid_t pid = luaL_optint(L, 1, -1);
-+ pid = waitpid(pid, &status, 0);
-+ if (pid == -1) return pusherror(L, NULL);
-+ lua_pushinteger(L, pid);
-+ if (WIFEXITED(status))
-+ {
-+ lua_pushliteral(L,"exited");
-+ lua_pushinteger(L, WEXITSTATUS(status));
-+ return 3;
-+ }
-+ else if (WIFSIGNALED(status))
-+ {
-+ lua_pushliteral(L,"killed");
-+ lua_pushinteger(L, WTERMSIG(status));
-+ return 3;
-+ }
-+ else if (WIFSTOPPED(status))
-+ {
-+ lua_pushliteral(L,"stopped");
-+ lua_pushinteger(L, WSTOPSIG(status));
-+ return 3;
-+ }
-+ return 1;
-+}
-+
-+
-+static int Pkill(lua_State *L) /** kill(pid,[sig]) */
-+{
-+ pid_t pid = luaL_checkint(L, 1);
-+ int sig = luaL_optint(L, 2, SIGTERM);
-+ return pushresult(L, kill(pid, sig), NULL);
-+}
-+
-+static int Psetpid(lua_State *L) /** setpid(option,...) */
-+{
-+ const char *what=luaL_checkstring(L, 1);
-+ switch (*what)
-+ {
-+ case 'U':
-+ return pushresult(L, seteuid(mygetuid(L, 2)), NULL);
-+ case 'u':
-+ return pushresult(L, setuid(mygetuid(L, 2)), NULL);
-+ case 'G':
-+ return pushresult(L, setegid(mygetgid(L, 2)), NULL);
-+ case 'g':
-+ return pushresult(L, setgid(mygetgid(L, 2)), NULL);
-+ case 's':
-+ return pushresult(L, setsid(), NULL);
-+ case 'p':
-+ {
-+ pid_t pid = luaL_checkint(L, 2);
-+ pid_t pgid = luaL_checkint(L, 3);
-+ return pushresult(L, setpgid(pid,pgid), NULL);
-+ }
-+ default:
-+ badoption(L, 2, "id", *what);
-+ return 0;
-+ }
-+}
-+
-+
-+static int Psleep(lua_State *L) /** sleep(seconds) */
-+{
-+ unsigned int seconds = luaL_checkint(L, 1);
-+ lua_pushinteger(L, sleep(seconds));
-+ return 1;
-+}
-+
-+
-+static int Psetenv(lua_State *L) /** setenv(name,value,[over]) */
-+{
-+ const char *name=luaL_checkstring(L, 1);
-+ const char *value=luaL_optstring(L, 2, NULL);
-+ if (value==NULL)
-+ {
-+ unsetenv(name);
-+ return pushresult(L, 0, NULL);
-+ }
-+ else
-+ {
-+ int overwrite=lua_isnoneornil(L, 3) || lua_toboolean(L, 3);
-+ return pushresult(L, setenv(name,value,overwrite), NULL);
-+ }
-+}
-+
-+
-+static int Pgetenv(lua_State *L) /** getenv([name]) */
-+{
-+ if (lua_isnone(L, 1))
-+ {
-+ extern char **environ;
-+ char **e;
-+ lua_newtable(L);
-+ for (e=environ; *e!=NULL; e++)
-+ {
-+ char *s=*e;
-+ char *eq=strchr(s, '=');
-+ if (eq==NULL) /* will this ever happen? */
-+ {
-+ lua_pushstring(L,s);
-+ lua_pushboolean(L,1);
-+ }
-+ else
-+ {
-+ lua_pushlstring(L,s,eq-s);
-+ lua_pushstring(L,eq+1);
-+ }
-+ lua_settable(L,-3);
-+ }
-+ }
-+ else
-+ lua_pushstring(L, getenv(luaL_checkstring(L, 1)));
-+ return 1;
-+}
-+
-+static int Pumask(lua_State *L) /** umask([mode]) */
-+{/* <!LR> from old lposix-5.0 version */
-+ char m[10];
-+ mode_t mode;
-+ umask(mode=umask(0));
-+ mode=(~mode)&0777;
-+ if (!lua_isnone(L, 1))
-+ {
-+ if (mode_munch(&mode, luaL_checkstring(L, 1)))
-+ {
-+ lua_pushnil(L);
-+ return 1;
-+ }
-+ mode&=0777;
-+ umask(~mode);
-+ }
-+ modechopper(mode, m);
-+ lua_pushstring(L, m);
-+ return 1;
-+}
-+
-+
-+static int Pchmod(lua_State *L) /** chmod(path,mode) */
-+{
-+ mode_t mode;
-+ struct stat s;
-+ const char *path = luaL_checkstring(L, 1);
-+ const char *modestr = luaL_checkstring(L, 2);
-+ if (stat(path, &s)) return pusherror(L, path);
-+ mode = s.st_mode;
-+ if (mode_munch(&mode, modestr)) luaL_argerror(L, 2, "bad mode");
-+ return pushresult(L, chmod(path, mode), path);
-+}
-+
-+
-+static int Pchown(lua_State *L) /** chown(path,uid,gid) */
-+{
-+ const char *path = luaL_checkstring(L, 1);
-+ uid_t uid = mygetuid(L, 2);
-+ gid_t gid = mygetgid(L, 3);
-+ return pushresult(L, chown(path, uid, gid), path);
-+}
-+
-+
-+static int Putime(lua_State *L) /** utime(path,[mtime,atime]) */
-+{
-+ struct utimbuf times;
-+ time_t currtime = time(NULL);
-+ const char *path = luaL_checkstring(L, 1);
-+ times.modtime = luaL_optnumber(L, 2, currtime);
-+ times.actime = luaL_optnumber(L, 3, currtime);
-+ return pushresult(L, utime(path, ×), path);
-+}
-+
-+
-+static void FgetID(lua_State *L, int i, const void *data)
-+{
-+ switch (i)
-+ {
-+ case 0: lua_pushinteger(L, getegid()); break;
-+ case 1: lua_pushinteger(L, geteuid()); break;
-+ case 2: lua_pushinteger(L, getgid()); break;
-+ case 3: lua_pushinteger(L, getuid()); break;
-+ case 4: lua_pushinteger(L, getpgrp()); break;
-+ case 5: lua_pushinteger(L, getpid()); break;
-+ case 6: lua_pushinteger(L, getppid()); break;
-+ }
-+}
-+
-+static const char *const SgetID[] =
-+{
-+ "egid", "euid", "gid", "uid", "pgrp", "pid", "ppid", NULL
-+};
-+
-+static int Pgetpid(lua_State *L) /** getpid([options]) */
-+{
-+ return doselection(L, 1, SgetID, FgetID, NULL);
-+}
-+
-+
-+static int Phostid(lua_State *L) /** hostid() */
-+{
-+ char b[32];
-+ sprintf(b,"%ld",gethostid());
-+ lua_pushstring(L, b);
-+ return 1;
-+}
-+
-+
-+static int Pttyname(lua_State *L) /** ttyname([fd]) */
-+{
-+ int fd=luaL_optint(L, 1, 0);
-+ lua_pushstring(L, ttyname(fd));
-+ return 1;
-+}
-+
-+
-+static int Pctermid(lua_State *L) /** ctermid() */
-+{
-+ char b[L_ctermid];
-+ lua_pushstring(L, ctermid(b));
-+ return 1;
-+}
-+
-+
-+static int Pgetlogin(lua_State *L) /** getlogin() */
-+{
-+ lua_pushstring(L, getlogin());
-+ return 1;
-+}
-+
-+
-+static void Fgetpasswd(lua_State *L, int i, const void *data)
-+{
-+ const struct passwd *p=data;
-+ switch (i)
-+ {
-+ case 0: lua_pushstring(L, p->pw_name); break;
-+ case 1: lua_pushinteger(L, p->pw_uid); break;
-+ case 2: lua_pushinteger(L, p->pw_gid); break;
-+ case 3: lua_pushstring(L, p->pw_dir); break;
-+ case 4: lua_pushstring(L, p->pw_shell); break;
-+/* not strictly POSIX */
-+ case 5: lua_pushstring(L, p->pw_gecos); break;
-+ case 6: lua_pushstring(L, p->pw_passwd); break;
-+ }
-+}
-+
-+static const char *const Sgetpasswd[] =
-+{
-+ "name", "uid", "gid", "dir", "shell", "gecos", "passwd", NULL
-+};
-+
-+
-+static int Pgetpasswd(lua_State *L) /** getpasswd(name|id,[sel]) */
-+{
-+ struct passwd *p=NULL;
-+ if (lua_isnoneornil(L, 1))
-+ p = getpwuid(geteuid());
-+ else if (lua_isnumber(L, 1))
-+ p = getpwuid((uid_t)lua_tonumber(L, 1));
-+ else if (lua_isstring(L, 1))
-+ p = getpwnam(lua_tostring(L, 1));
-+ else
-+ luaL_typerror(L, 1, "string or number");
-+ if (p==NULL)
-+ lua_pushnil(L);
-+ else
-+ return doselection(L, 2, Sgetpasswd, Fgetpasswd, p);
-+ return 1;
-+}
-+
-+
-+static int Pgetgroup(lua_State *L) /** getgroup(name|id) */
-+{
-+ struct group *g=NULL;
-+ if (lua_isnumber(L, 1))
-+ g = getgrgid((gid_t)lua_tonumber(L, 1));
-+ else if (lua_isstring(L, 1))
-+ g = getgrnam(lua_tostring(L, 1));
-+ else
-+ luaL_typerror(L, 1, "string or number");
-+ if (g==NULL)
-+ lua_pushnil(L);
-+ else
-+ {
-+ int i;
-+ lua_newtable(L);
-+ lua_pushliteral(L, "name");
-+ lua_pushstring(L, g->gr_name);
-+ lua_settable(L, -3);
-+ lua_pushliteral(L, "gid");
-+ lua_pushinteger(L, g->gr_gid);
-+ lua_settable(L, -3);
-+ for (i=0; g->gr_mem[i]!=NULL; i++)
-+ {
-+ lua_pushstring(L, g->gr_mem[i]);
-+ lua_rawseti(L, -2, i);
-+ }
-+ }
-+ return 1;
-+}
-+
-+
-+struct mytimes
-+{
-+ struct tms t;
-+ clock_t elapsed;
-+};
-+
-+/* #define pushtime(L,x) lua_pushnumber(L,((lua_Number)x)/CLOCKS_PER_SEC) */
-+#define pushtime(L,x) lua_pushnumber(L, ((lua_Number)x)/clk_tck)
-+
-+static void Ftimes(lua_State *L, int i, const void *data)
-+{
-+ static long clk_tck = 0;
-+ const struct mytimes *t=data;
-+
-+ if( !clk_tck){ clk_tck= sysconf(_SC_CLK_TCK);}
-+ switch (i)
-+ {
-+ case 0: pushtime(L, t->t.tms_utime); break;
-+ case 1: pushtime(L, t->t.tms_stime); break;
-+ case 2: pushtime(L, t->t.tms_cutime); break;
-+ case 3: pushtime(L, t->t.tms_cstime); break;
-+ case 4: pushtime(L, t->elapsed); break;
-+ }
-+}
-+
-+static const char *const Stimes[] =
-+{
-+ "utime", "stime", "cutime", "cstime", "elapsed", NULL
-+};
-+
-+static int Ptimes(lua_State *L) /** times([options]) */
-+{
-+ struct mytimes t;
-+ t.elapsed = times(&t.t);
-+ return doselection(L, 1, Stimes, Ftimes, &t);
-+}
-+
-+
-+static const char *filetype(mode_t m)
-+{
-+ if (S_ISREG(m)) return "regular";
-+ else if (S_ISLNK(m)) return "link";
-+ else if (S_ISDIR(m)) return "directory";
-+ else if (S_ISCHR(m)) return "character device";
-+ else if (S_ISBLK(m)) return "block device";
-+ else if (S_ISFIFO(m)) return "fifo";
-+ else if (S_ISSOCK(m)) return "socket";
-+ else return "?";
-+}
-+
-+static void Fstat(lua_State *L, int i, const void *data)
-+{
-+ const struct stat *s=data;
-+ switch (i)
-+ {
-+ case 0: pushmode(L, s->st_mode); break;
-+ case 1: lua_pushinteger(L, s->st_ino); break;
-+ case 2: lua_pushinteger(L, s->st_dev); break;
-+ case 3: lua_pushinteger(L, s->st_nlink); break;
-+ case 4: lua_pushinteger(L, s->st_uid); break;
-+ case 5: lua_pushinteger(L, s->st_gid); break;
-+ case 6: lua_pushinteger(L, s->st_size); break;
-+ case 7: lua_pushinteger(L, s->st_atime); break;
-+ case 8: lua_pushinteger(L, s->st_mtime); break;
-+ case 9: lua_pushinteger(L, s->st_ctime); break;
-+ case 10:lua_pushstring(L, filetype(s->st_mode)); break;
-+ }
-+}
-+
-+static const char *const Sstat[] =
-+{
-+ "mode", "ino", "dev", "nlink", "uid", "gid",
-+ "size", "atime", "mtime", "ctime", "type",
-+ NULL
-+};
-+
-+static int Pstat(lua_State *L) /** stat(path,[options]) */
-+{
-+ struct stat s;
-+ const char *path=luaL_checkstring(L, 1);
-+ if (lstat(path,&s)==-1) return pusherror(L, path);
-+ return doselection(L, 2, Sstat, Fstat, &s);
-+}
-+
-+
-+static int Puname(lua_State *L) /** uname([string]) */
-+{
-+ struct utsname u;
-+ luaL_Buffer b;
-+ const char *s;
-+ if (uname(&u)==-1) return pusherror(L, NULL);
-+ luaL_buffinit(L, &b);
-+ for (s=luaL_optstring(L, 1, "%s %n %r %v %m"); *s; s++)
-+ if (*s!='%')
-+ luaL_putchar(&b, *s);
-+ else switch (*++s)
-+ {
-+ case '%': luaL_putchar(&b, *s); break;
-+ case 'm': luaL_addstring(&b,u.machine); break;
-+ case 'n': luaL_addstring(&b,u.nodename); break;
-+ case 'r': luaL_addstring(&b,u.release); break;
-+ case 's': luaL_addstring(&b,u.sysname); break;
-+ case 'v': luaL_addstring(&b,u.version); break;
-+ default: badoption(L, 2, "format", *s); break;
-+ }
-+ luaL_pushresult(&b);
-+ return 1;
-+}
-+
-+
-+static const int Kpathconf[] =
-+{
-+ _PC_LINK_MAX, _PC_MAX_CANON, _PC_MAX_INPUT, _PC_NAME_MAX, _PC_PATH_MAX,
-+ _PC_PIPE_BUF, _PC_CHOWN_RESTRICTED, _PC_NO_TRUNC, _PC_VDISABLE,
-+ -1
-+};
-+
-+static void Fpathconf(lua_State *L, int i, const void *data)
-+{
-+ const char *path=data;
-+ lua_pushinteger(L, pathconf(path, Kpathconf[i]));
-+}
-+
-+static const char *const Spathconf[] =
-+{
-+ "link_max", "max_canon", "max_input", "name_max", "path_max",
-+ "pipe_buf", "chown_restricted", "no_trunc", "vdisable",
-+ NULL
-+};
-+
-+static int Ppathconf(lua_State *L) /** pathconf([path,options]) */
-+{
-+ const char *path = luaL_optstring(L, 1, ".");
-+ return doselection(L, 2, Spathconf, Fpathconf, path);
-+}
-+
-+
-+static const int Ksysconf[] =
-+{
-+ _SC_ARG_MAX, _SC_CHILD_MAX, _SC_CLK_TCK, _SC_NGROUPS_MAX, _SC_STREAM_MAX,
-+ _SC_TZNAME_MAX, _SC_OPEN_MAX, _SC_JOB_CONTROL, _SC_SAVED_IDS, _SC_VERSION,
-+ -1
-+};
-+
-+static void Fsysconf(lua_State *L, int i, const void *data)
-+{
-+ lua_pushinteger(L, sysconf(Ksysconf[i]));
-+}
-+
-+static const char *const Ssysconf[] =
-+{
-+ "arg_max", "child_max", "clk_tck", "ngroups_max", "stream_max",
-+ "tzname_max", "open_max", "job_control", "saved_ids", "version",
-+ NULL
-+};
-+
-+static int Psysconf(lua_State *L) /** sysconf([options]) */
-+{
-+ return doselection(L, 1, Ssysconf, Fsysconf, NULL);
-+}
-+
-+#if ENABLE_SYSLOG
-+/* syslog funcs */
-+static int Popenlog(lua_State *L) /** openlog(ident, [option], [facility]) */
-+{
-+ const char *ident = luaL_checkstring(L, 1);
-+ int option = 0;
-+ int facility = luaL_optint(L, 3, LOG_USER);
-+ const char *s = luaL_optstring(L, 2, "");
-+ while (*s) {
-+ switch (*s) {
-+ case ' ': break;
-+ case 'c': option |= LOG_CONS; break;
-+ case 'n': option |= LOG_NDELAY; break;
-+ case 'e': option |= LOG_PERROR; break;
-+ case 'p': option |= LOG_PID; break;
-+ default: badoption(L, 2, "option", *s); break;
-+ }
-+ s++;
-+ }
-+ openlog(ident, option, facility);
-+ return 0;
-+}
-+
-+
-+static int Psyslog(lua_State *L) /** syslog(priority, message) */
-+{
-+ int priority = luaL_checkint(L, 1);
-+ const char *msg = luaL_checkstring(L, 2);
-+ syslog(priority, "%s", msg);
-+ return 0;
-+}
-+
-+
-+static int Pcloselog(lua_State *L) /** closelog() */
-+{
-+ closelog();
-+ return 0;
-+}
-+#endif
-+
-+/*
-+ * XXX: GNU and BSD handle the forward declaration of crypt() in different
-+ * and annoying ways (especially GNU). Declare it here just to make sure
-+ * that it's there
-+ */
-+char *crypt(const char *, const char *);
-+
-+static int Pcrypt(lua_State *L)
-+{
-+ const char *str, *salt;
-+ char *res;
-+
-+ str = luaL_checkstring(L, 1);
-+ salt = luaL_checkstring(L, 2);
-+ if (strlen(salt) < 2)
-+ luaL_error(L, "not enough salt");
-+
-+ res = crypt(str, salt);
-+ lua_pushstring(L, res);
-+
-+ return 1;
-+}
-+
-+static const luaL_reg R[] =
-+{
-+ {"access", Paccess},
-+ {"basename", Pbasename},
-+ {"chdir", Pchdir},
-+ {"chmod", Pchmod},
-+ {"chown", Pchown},
-+ {"crypt", Pcrypt},
-+ {"ctermid", Pctermid},
-+ {"dirname", Pdirname},
-+ {"dir", Pdir},
-+ {"dup", Pdup},
-+ {"errno", Perrno},
-+ {"exec", Pexec},
-+ {"execp", Pexecp},
-+ {"fdopen", Pfdopen},
-+ {"fileno", Pfileno},
-+ {"files", Pfiles},
-+ {"fork", Pfork},
-+ {"getcwd", Pgetcwd},
-+ {"getenv", Pgetenv},
-+ {"getgroup", Pgetgroup},
-+ {"getlogin", Pgetlogin},
-+ {"getpasswd", Pgetpasswd},
-+ {"getpid", Pgetpid},
-+ {"glob", Pglob},
-+ {"hostid", Phostid},
-+ {"kill", Pkill},
-+ {"link", Plink},
-+ {"mkdir", Pmkdir},
-+ {"mkfifo", Pmkfifo},
-+ {"pathconf", Ppathconf},
-+ {"pipe", Ppipe},
-+ {"readlink", Preadlink},
-+ {"rmdir", Prmdir},
-+ {"rpoll", Ppoll},
-+ {"setenv", Psetenv},
-+ {"setpid", Psetpid},
-+ {"sleep", Psleep},
-+ {"stat", Pstat},
-+ {"sysconf", Psysconf},
-+ {"times", Ptimes},
-+ {"ttyname", Pttyname},
-+ {"unlink", Punlink},
-+ {"umask", Pumask},
-+ {"uname", Puname},
-+ {"utime", Putime},
-+ {"wait", Pwait},
-+
-+#if ENABLE_SYSLOG
-+ {"openlog", Popenlog},
-+ {"syslog", Psyslog},
-+ {"closelog", Pcloselog},
-+#endif
-+
-+ {NULL, NULL}
-+};
-+
-+#define set_const(key, value) \
-+ lua_pushliteral(L, key); \
-+ lua_pushnumber(L, value); \
-+ lua_settable(L, -3)
-+
-+LUALIB_API int luaopen_posix (lua_State *L)
-+{
-+ luaL_register(L,MYNAME,R);
-+ lua_pushliteral(L,"version"); /** version */
-+ lua_pushliteral(L,MYVERSION);
-+ lua_settable(L,-3);
-+
-+#if ENABLE_SYSLOG
-+ set_const("LOG_AUTH", LOG_AUTH);
-+ set_const("LOG_AUTHPRIV", LOG_AUTHPRIV);
-+ set_const("LOG_CRON", LOG_CRON);
-+ set_const("LOG_DAEMON", LOG_DAEMON);
-+ set_const("LOG_FTP", LOG_FTP);
-+ set_const("LOG_KERN", LOG_KERN);
-+ set_const("LOG_LOCAL0", LOG_LOCAL0);
-+ set_const("LOG_LOCAL1", LOG_LOCAL1);
-+ set_const("LOG_LOCAL2", LOG_LOCAL2);
-+ set_const("LOG_LOCAL3", LOG_LOCAL3);
-+ set_const("LOG_LOCAL4", LOG_LOCAL4);
-+ set_const("LOG_LOCAL5", LOG_LOCAL5);
-+ set_const("LOG_LOCAL6", LOG_LOCAL6);
-+ set_const("LOG_LOCAL7", LOG_LOCAL7);
-+ set_const("LOG_LPR", LOG_LPR);
-+ set_const("LOG_MAIL", LOG_MAIL);
-+ set_const("LOG_NEWS", LOG_NEWS);
-+ set_const("LOG_SYSLOG", LOG_SYSLOG);
-+ set_const("LOG_USER", LOG_USER);
-+ set_const("LOG_UUCP", LOG_UUCP);
-+
-+ set_const("LOG_EMERG", LOG_EMERG);
-+ set_const("LOG_ALERT", LOG_ALERT);
-+ set_const("LOG_CRIT", LOG_CRIT);
-+ set_const("LOG_ERR", LOG_ERR);
-+ set_const("LOG_WARNING", LOG_WARNING);
-+ set_const("LOG_NOTICE", LOG_NOTICE);
-+ set_const("LOG_INFO", LOG_INFO);
-+ set_const("LOG_DEBUG", LOG_DEBUG);
-+#endif
-+
-+
-+ return 1;
-+}
-+
-+/*EOF*/
---- a/src/lualib.h
-+++ b/src/lualib.h
-@@ -39,6 +39,9 @@ LUALIB_API int (luaopen_debug) (lua_Stat
- #define LUA_LOADLIBNAME "package"
- LUALIB_API int (luaopen_package) (lua_State *L);
-
-+#define LUA_POSIXLIBNAME "posix"
-+LUALIB_API int (luaopen_posix) (lua_State *L);
-+
-
- /* open all previous libraries */
- LUALIB_API void (luaL_openlibs) (lua_State *L);
---- /dev/null
-+++ b/src/modemuncher.c
-@@ -0,0 +1,261 @@
-+/*
-+ Mode Muncher -- modemuncher.c
-+ 961110 Claudio Terra
-+
-+ munch vb
-+ [ME monchen, perh. influenced by MF mangier to eat --more at MANGER]
-+ :to chew with a crunching sound: eat with relish
-+ :to chew food with a crunching sound: eat food with relish
-+ --munch-er n
-+
-+ The NeXT Digital Edition of Webster's Ninth New Collegiate Dictionary
-+ and Webster's Collegiate Thesaurus
-+*/
-+
-+/* struct for rwx <-> POSIX constant lookup tables */
-+struct modeLookup
-+{
-+ char rwx;
-+ mode_t bits;
-+};
-+
-+typedef struct modeLookup modeLookup;
-+
-+static modeLookup modesel[] =
-+{
-+ /* RWX char Posix Constant */
-+ {'r', S_IRUSR},
-+ {'w', S_IWUSR},
-+ {'x', S_IXUSR},
-+
-+ {'r', S_IRGRP},
-+ {'w', S_IWGRP},
-+ {'x', S_IXGRP},
-+
-+ {'r', S_IROTH},
-+ {'w', S_IWOTH},
-+ {'x', S_IXOTH},
-+ {0, (mode_t)-1} /* do not delete this line */
-+};
-+
-+
-+
-+static int rwxrwxrwx(mode_t *mode, const char *p)
-+{
-+ int count;
-+ mode_t tmp_mode = *mode;
-+
-+ tmp_mode &= ~(S_ISUID | S_ISGID); /* turn off suid and sgid flags */
-+ for (count=0; count<9; count ++)
-+ {
-+ if (*p == modesel[count].rwx) tmp_mode |= modesel[count].bits; /* set a bit */
-+ else if (*p == '-') tmp_mode &= ~modesel[count].bits; /* clear a bit */
-+ else if (*p=='s') switch(count)
-+ {
-+ case 2: /* turn on suid flag */
-+ tmp_mode |= S_ISUID | S_IXUSR;
-+ break;
-+
-+ case 5: /* turn on sgid flag */
-+ tmp_mode |= S_ISGID | S_IXGRP;
-+ break;
-+
-+ default:
-+ return -4; /* failed! -- bad rwxrwxrwx mode change */
-+ break;
-+ }
-+ p++;
-+ }
-+ *mode = tmp_mode;
-+ return 0;
-+}
-+
-+static void modechopper(mode_t mode, char *p)
-+{
-+ /* requires char p[10] */
-+ int count;
-+ char *pp;
-+
-+ pp=p;
-+
-+ for (count=0; count<9; count ++)
-+ {
-+ if (mode & modesel[count].bits) *p = modesel[count].rwx;
-+ else *p='-';
-+
-+ p++;
-+ }
-+ *p=0; /* to finish the string */
-+
-+ /* dealing with suid and sgid flags */
-+ if (mode & S_ISUID) pp[2] = (mode & S_IXUSR) ? 's' : 'S';
-+ if (mode & S_ISGID) pp[5] = (mode & S_IXGRP) ? 's' : 'S';
-+
-+}
-+
-+static int mode_munch(mode_t *mode, const char* p)
-+{
-+
-+ char op=0;
-+ mode_t affected_bits, ch_mode;
-+ int doneFlag = 0;
-+#ifdef DEBUG
-+char tmp[10];
-+#endif
-+
-+#ifdef DEBUG
-+modechopper(*mode, tmp);
-+printf("modemuncher: got base mode = %s\n", tmp);
-+#endif
-+
-+ while (!doneFlag)
-+ {
-+ /* step 0 -- clear temporary variables */
-+ affected_bits=0;
-+ ch_mode=0;
-+
-+ /* step 1 -- who's affected? */
-+
-+#ifdef DEBUG
-+printf("modemuncher step 1\n");
-+#endif
-+
-+ /* mode string given in rwxrwxrwx format */
-+ if (*p== 'r' || *p == '-') return rwxrwxrwx(mode, p);
-+
-+ /* mode string given in ugoa+-=rwx format */
-+ for ( ; ; p++)
-+ switch (*p)
-+ {
-+ case 'u':
-+ affected_bits |= 04700;
-+ break;
-+
-+ case 'g':
-+ affected_bits |= 02070;
-+ break;
-+
-+ case 'o':
-+ affected_bits |= 01007;
-+ break;
-+
-+ case 'a':
-+ affected_bits |= 07777;
-+ break;
-+
-+ /* ignore spaces */
-+ case ' ':
-+ break;
-+
-+
-+ default:
-+ goto no_more_affected;
-+ }
-+
-+ no_more_affected:
-+ /* If none specified, affect all bits. */
-+ if (affected_bits == 0) affected_bits = 07777;
-+
-+ /* step 2 -- how is it changed? */
-+
-+#ifdef DEBUG
-+printf("modemuncher step 2 (*p='%c')\n", *p);
-+#endif
-+
-+ switch (*p)
-+ {
-+ case '+':
-+ case '-':
-+ case '=':
-+ op = *p;
-+ break;
-+
-+ /* ignore spaces */
-+ case ' ':
-+ break;
-+
-+ default:
-+ return -1; /* failed! -- bad operator */
-+ }
-+
-+
-+ /* step 3 -- what are the changes? */
-+
-+#ifdef DEBUG
-+printf("modemuncher step 3\n");
-+#endif
-+
-+ for (p++ ; *p!=0 ; p++)
-+ switch (*p)
-+ {
-+ case 'r':
-+ ch_mode |= 00444;
-+ break;
-+
-+ case 'w':
-+ ch_mode |= 00222;
-+ break;
-+
-+ case 'x':
-+ ch_mode |= 00111;
-+ break;
-+
-+ case 's':
-+ /* Set the setuid/gid bits if `u' or `g' is selected. */
-+ ch_mode |= 06000;
-+ break;
-+
-+ /* ignore spaces */
-+ case ' ':
-+ break;
-+
-+ default:
-+ goto specs_done;
-+ }
-+
-+ specs_done:
-+ /* step 4 -- apply the changes */
-+
-+#ifdef DEBUG
-+ printf("modemuncher step 4\n");
-+#endif
-+ if (*p != ',') doneFlag = 1;
-+ if (*p != 0 && *p != ' ' && *p != ',')
-+ {
-+
-+#ifdef DEBUG
-+printf("modemuncher: comma error!\n");
-+printf("modemuncher: doneflag = %u\n", doneFlag);
-+#endif
-+ return -2; /* failed! -- bad mode change */
-+
-+ }
-+ p++;
-+ /*if (!ch_mode) return -2;*/ /* failed! -- bad mode change */
-+ if (ch_mode) switch (op)
-+ {
-+ case '+':
-+ *mode = *mode |= ch_mode & affected_bits;
-+ break;
-+
-+ case '-':
-+ *mode = *mode &= ~(ch_mode & affected_bits);
-+ break;
-+
-+ case '=':
-+ *mode = ch_mode & affected_bits;
-+ break;
-+
-+ default:
-+ return -3; /* failed! -- unknown error */
-+ }
-+ }
-+#ifdef DEBUG
-+modechopper(*mode, tmp);
-+printf("modemuncher: returning mode = %s\n", tmp);
-+#endif
-+
-+ return 0; /* successful call */
-+}
-+
-+
projects / openwrt.git / commitdiff