diff --git a/source/texk/web2c/luatexdir/lua/loslibext.c b/source/texk/web2c/luatexdir/lua/loslibext.c index 979f724..ca0231c 100644 --- a/source/texk/web2c/luatexdir/lua/loslibext.c +++ b/source/texk/web2c/luatexdir/lua/loslibext.c @@ -1035,6 +1035,111 @@ static int os_execute(lua_State * L) } +/* +** ====================================================== +** l_kpse_popen spawns a new process connected to the current +** one through the file streams with some checks by kpse. +** Almost verbatim from Lua liolib.c . +** ======================================================= +*/ +#if !defined(l_kpse_popen) /* { */ + +#if defined(LUA_USE_POSIX) /* { */ + +#define l_kpse_popen(L,c,m) (fflush(NULL), popen(c,m)) +#define l_kpse_pclose(L,file) (pclose(file)) + +#elif defined(LUA_USE_WINDOWS) /* }{ */ + +#define l_kpse_popen(L,c,m) (_popen(c,m)) +#define l_kpse_pclose(L,file) (_pclose(file)) + +#else /* }{ */ + +/* ISO C definitions */ +#define l_kpse_popen(L,c,m) \ + ((void)((void)c, m), \ + luaL_error(L, "'popen' not supported"), \ + (FILE*)0) +#define l_kpse_pclose(L,file) ((void)L, (void)file, -1) + +#endif /* } */ + +#endif /* } */ +typedef luaL_Stream LStream; +#define tolstream(L) ((LStream *)luaL_checkudata(L, 1, LUA_FILEHANDLE)) +static LStream *newprefile (lua_State *L) { + LStream *p = (LStream *)lua_newuserdata(L, sizeof(LStream)); + p->closef = NULL; /* mark file handle as 'closed' */ + luaL_setmetatable(L, LUA_FILEHANDLE); + return p; +} +static int io_kpse_pclose (lua_State *L) { + LStream *p = tolstream(L); + return luaL_execresult(L, l_kpse_pclose(L, p->f)); +} +static int io_kpse_check_permissions(lua_State *L) { + const char *filename = luaL_checkstring(L, 1); + if (filename == NULL) { + lua_pushboolean(L,0); + lua_pushliteral(L,"no command name given"); + } else if (shellenabledp <= 0) { + lua_pushboolean(L,0); + lua_pushliteral(L,"all command execution is disabled"); + } else if (restrictedshell == 0) { + lua_pushboolean(L,1); + lua_pushstring(L,filename); + } else { + char *safecmd = NULL; + char *cmdname = NULL; + switch (shell_cmd_is_allowed(filename, &safecmd, &cmdname)) { + case 0: + lua_pushboolean(L,0); + lua_pushliteral(L, "specific command execution disabled"); + break; + case 1: + /* doesn't happen */ + lua_pushboolean(L,1); + lua_pushstring(L,filename); + break; + case 2: + lua_pushboolean(L,1); + lua_pushstring(L,safecmd); + break; + default: + /* -1 */ + lua_pushboolean(L,0); + lua_pushliteral(L, "bad command line quoting"); + break; + } + } + return 2; +} +static int io_kpse_popen (lua_State *L) { + const char *filename = NULL; + const char *mode = NULL; + LStream *p = NULL; + int okay; + filename = luaL_checkstring(L, 1); + mode = luaL_optstring(L, 2, "r"); + lua_pushstring(L,filename); + io_kpse_check_permissions(L); + filename = luaL_checkstring(L, -1); + okay = lua_toboolean(L,-2); + if (okay && filename) { + p = newprefile(L); + luaL_argcheck(L, ((mode[0] == 'r' || mode[0] == 'w') && mode[1] == '\0'), + 2, "invalid mode"); + p->f = l_kpse_popen(L, filename, mode); + p->closef = &io_kpse_pclose; + return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1; + } else { + lua_pushnil(L); + lua_pushvalue(L,-2); + return 2; + } +} + void open_oslibext(lua_State * L) { @@ -1068,6 +1173,8 @@ void open_oslibext(lua_State * L) lua_setfield(L, -2, "execute"); lua_pushcfunction(L, os_tmpdir); lua_setfield(L, -2, "tmpdir"); + lua_pushcfunction(L, io_kpse_popen); + lua_setfield(L, -2, "kpsepopen"); lua_pop(L, 1); /* pop the table */ } diff --git a/source/texk/web2c/luatexdir/lua/luatex-core.c b/source/texk/web2c/luatexdir/lua/luatex-core.c index 9539676..a1fc2b5 100644 --- a/source/texk/web2c/luatexdir/lua/luatex-core.c +++ b/source/texk/web2c/luatexdir/lua/luatex-core.c @@ -91,586 +91,574 @@ int load_luatex_core_lua (lua_State * L) 0x20, 0x20, 0x20, 0x20, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x69, 0x6f, 0x5f, 0x6f, 0x70, 0x65, 0x6e, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 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kpse.record_output_file local io_open = io.open - local io_popen = io.popen local io_lines = io.lines local fio_readline = fio.readline @@ -75,12 +74,6 @@ if kpseused == 1 then return f end - local function luatex_io_popen(name,...) - local okay, found = kpse_checkpermission(name) - if okay and found then - return io_popen(found,...) - end - end -- local function luatex_io_lines(name,how) -- if name then @@ -130,7 +123,7 @@ if kpseused == 1 then mt.lines = luatex_io_readline io.open = luatex_io_open - io.popen = luatex_io_popen + io.popen = os.kpsepopen else @@ -169,6 +162,8 @@ if saferoption == 1 then os.setenv = installdummy("os.setenv") os.tempdir = installdummy("os.tempdir") + os.kpsepopen = installdummy("os.kpsepopen") + io.popen = installdummy("io.popen") io.open = installdummy("io.open",luatex_io_open_readonly)