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Update Lua I/O support to 2.2

This commit is contained in:
Louis-Antoine 2020-01-22 23:08:57 +01:00
parent 0d460aed1d
commit e8760fe5dd
13 changed files with 1058 additions and 8 deletions
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1
src/CMakeLists.txt
View File

@ -279,6 +279,7 @@ if(${SRB2_CONFIG_HAVE_BLUA})
blua/lfunc.c
blua/lgc.c
blua/linit.c
blua/liolib.c
blua/llex.c
blua/lmem.c
blua/lobject.c

1
src/blua/Makefile.cfg
View File

@ -18,6 +18,7 @@ OBJS:=$(OBJS) \
$(OBJDIR)/ldo.o \
$(OBJDIR)/lfunc.o \
$(OBJDIR)/linit.o \
$(OBJDIR)/liolib.o \
$(OBJDIR)/llex.o \
$(OBJDIR)/lmem.o \
$(OBJDIR)/lobject.o \

1
src/blua/linit.c
View File

@ -17,6 +17,7 @@
static const luaL_Reg lualibs[] = {
{"", luaopen_base},
{LUA_TABLIBNAME, luaopen_table},
{LUA_IOLIBNAME, luaopen_io},
{LUA_STRLIBNAME, luaopen_string},
{NULL, NULL}
};

720
src/blua/liolib.c Normal file
View File

@ -0,0 +1,720 @@
/*
** $Id: liolib.c,v 2.73.1.3 2008/01/18 17:47:43 roberto Exp $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define liolib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#include "../i_system.h"
#include "../g_game.h"
#include "../d_netfil.h"
#include "../lua_libs.h"
#include "../byteptr.h"
#include "../lua_script.h"
#include "../m_misc.h"
#define IO_INPUT 1
#define IO_OUTPUT 2
#define FILELIMIT (1024 * 1024) // Size limit for reading/writing files
#define FMT_FILECALLBACKID "file_callback_%d"
static const char *const fnames[] = {"input", "output"};
static const char *whitelist[] = { // Allow scripters to write files of these types to SRB2's folder
".txt",
".sav2",
".cfg",
".png",
".bmp"
};
static int pushresult (lua_State *L, int i, const char *filename) {
int en = errno; /* calls to Lua API may change this value */
if (i) {
lua_pushboolean(L, 1);
return 1;
}
else {
lua_pushnil(L);
if (filename)
lua_pushfstring(L, "%s: %s", filename, strerror(en));
else
lua_pushfstring(L, "%s", strerror(en));
lua_pushinteger(L, en);
return 3;
}
}
static void fileerror (lua_State *L, int arg, const char *filename) {
lua_pushfstring(L, "%s: %s", filename, strerror(errno));
luaL_argerror(L, arg, lua_tostring(L, -1));
}
#define tofilep(L) ((FILE **)luaL_checkudata(L, 1, LUA_FILEHANDLE))
static int io_type (lua_State *L) {
void *ud;
luaL_checkany(L, 1);
ud = lua_touserdata(L, 1);
lua_getfield(L, LUA_REGISTRYINDEX, LUA_FILEHANDLE);
if (ud == NULL || !lua_getmetatable(L, 1) || !lua_rawequal(L, -2, -1))
lua_pushnil(L); /* not a file */
else if (*((FILE **)ud) == NULL)
lua_pushliteral(L, "closed file");
else
lua_pushliteral(L, "file");
return 1;
}
static FILE *tofile (lua_State *L) {
FILE **f = tofilep(L);
if (*f == NULL)
luaL_error(L, "attempt to use a closed file");
return *f;
}
/*
** When creating file handles, always creates a `closed' file handle
** before opening the actual file; so, if there is a memory error, the
** file is not left opened.
*/
static FILE **newfile (lua_State *L) {
FILE **pf = (FILE **)lua_newuserdata(L, sizeof(FILE *));
*pf = NULL; /* file handle is currently `closed' */
luaL_getmetatable(L, LUA_FILEHANDLE);
lua_setmetatable(L, -2);
return pf;
}
/*
** function to (not) close the standard files stdin, stdout, and stderr
*/
static int io_noclose (lua_State *L) {
lua_pushnil(L);
lua_pushliteral(L, "cannot close standard file");
return 2;
}
/*
** function to close regular files
*/
static int io_fclose (lua_State *L) {
FILE **p = tofilep(L);
int ok = (fclose(*p) == 0);
*p = NULL;
return pushresult(L, ok, NULL);
}
static int aux_close (lua_State *L) {
lua_getfenv(L, 1);
lua_getfield(L, -1, "__close");
return (lua_tocfunction(L, -1))(L);
}
static int io_gc (lua_State *L) {
FILE *f = *tofilep(L);
/* ignore closed files */
if (f != NULL)
aux_close(L);
return 0;
}
static int io_tostring (lua_State *L) {
FILE *f = *tofilep(L);
if (f == NULL)
lua_pushliteral(L, "file (closed)");
else
lua_pushfstring(L, "file (%p)", f);
return 1;
}
// Create directories in the path
void MakePathDirs(char *path)
{
char *c;
for (c = path; *c; c++)
if (*c == '/' || *c == '\\')
{
char sep = *c;
*c = '\0';
I_mkdir(path, 0755);
*c = sep;
}
}
static int io_open (lua_State *L) {
FILE **pf;
const char *filename = luaL_checkstring(L, 1);
boolean pass = false;
size_t i;
int length = strlen(filename);
const char *mode = luaL_optstring(L, 2, "r");
luafiletransfer_t *filetransfer;
if (strchr(filename, '\\'))
{
luaL_error(L, "access denied to %s: \\ is not allowed, use / instead", filename);
return pushresult(L,0,filename);
}
for (i = 0; i < (sizeof (whitelist) / sizeof(const char *)); i++)
if (!stricmp(&filename[length - strlen(whitelist[i])], whitelist[i]))
{
pass = true;
break;
}
if (strstr(filename, "./")
|| strstr(filename, "..") || strchr(filename, ':')
|| filename[0] == '/'
|| !pass)
{
luaL_error(L, "access denied to %s", filename);
return pushresult(L,0,filename);
}
luaL_checktype(L, 4, LUA_TFUNCTION);
if (lua_isnil(L, 3) && (strchr(mode, 'r') || strchr(mode, '+'))) // Synched reading
{
AddLuaFileTransfer(filename, mode);
/*pf = newfile(L);
*pf = fopen(realfilename, mode);
return (*pf == NULL) ? pushresult(L, 0, filename) : 1;*/
}
else // Local I/O
{
char *realfilename = va("%s" PATHSEP "%s", luafiledir, filename);
player_t *player = *((player_t **)luaL_checkudata(L, 3, META_PLAYER));
if (!player)
return LUA_ErrInvalid(L, "player_t");
if (player != &players[consoleplayer])
return 0;
if (client && strnicmp(filename, "shared/", strlen("shared/")))
I_Error("Access denied to %s\n"
"Clients can only access files stored in luafiles/shared/\n",
filename);
// Prevent access if the file is being downloaded
for (filetransfer = luafiletransfers; filetransfer; filetransfer = filetransfer->next)
if (!stricmp(filetransfer->filename, filename))
I_Error("Access denied to %s\n"
"Files can't be opened while being downloaded\n",
filename);
MakePathDirs(realfilename);
// The callback is the last argument, no need to push it again
// Push the first argument (file handle) on the stack
pf = newfile(gL); // Create and push the file handle
*pf = fopen(realfilename, mode); // Open the file
if (!*pf)
{
lua_pop(gL, 1);
lua_pushnil(gL);
}
// Push the second argument (file name) on the stack
lua_pushstring(gL, filename);
// Call the callback
LUA_Call(gL, 2);
// Close the file
if (*pf)
{
fclose(*pf);
*pf = NULL;
}
}
return 0; // !!! Todo: error handling?
}
void Got_LuaFile(UINT8 **cp, INT32 playernum)
{
FILE **pf;
boolean success = READUINT8(*cp); // The first (and only) byte indicates whether the file could be opened
if (playernum != serverplayer)
{
CONS_Alert(CONS_WARNING, M_GetText("Illegal luafile command received from %s\n"), player_names[playernum]);
if (server)
SendKick(playernum, KICK_MSG_CON_FAIL);
return;
}
if (!luafiletransfers)
I_Error("No Lua file transfer\n");
// Retrieve the callback and push it on the stack
lua_pushfstring(gL, FMT_FILECALLBACKID, luafiletransfers->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
// Push the first argument (file handle or nil) on the stack
if (success)
{
pf = newfile(gL); // Create and push the file handle
*pf = fopen(luafiletransfers->realfilename, luafiletransfers->mode); // Open the file
if (!*pf)
I_Error("Can't open file \"%s\"\n", luafiletransfers->realfilename); // The file SHOULD exist
}
else
lua_pushnil(gL);
// Push the second argument (file name) on the stack
lua_pushstring(gL, luafiletransfers->filename);
// Call the callback
LUA_Call(gL, 2);
if (success)
{
// Close the file
if (*pf)
{
fclose(*pf);
*pf = NULL;
}
if (client)
remove(luafiletransfers->realfilename);
}
RemoveLuaFileTransfer();
if (server && luafiletransfers)
{
if (FIL_FileOK(luafiletransfers->realfilename))
SV_PrepareSendLuaFileToNextNode();
else
{
// Send a net command with 0 as its first byte to indicate the file couldn't be opened
UINT8 success = 0;
SendNetXCmd(XD_LUAFILE, &success, 1);
}
}
}
void StoreLuaFileCallback(INT32 id)
{
lua_pushfstring(gL, FMT_FILECALLBACKID, id);
lua_pushvalue(gL, 4); // Parameter 4 is the callback
lua_settable(gL, LUA_REGISTRYINDEX); // registry[callbackid] = callback
}
void RemoveLuaFileCallback(INT32 id)
{
lua_pushfstring(gL, FMT_FILECALLBACKID, id);
lua_pushnil(gL);
lua_settable(gL, LUA_REGISTRYINDEX); // registry[callbackid] = nil
}
static int io_tmpfile (lua_State *L) {
FILE **pf = newfile(L);
*pf = tmpfile();
return (*pf == NULL) ? pushresult(L, 0, NULL) : 1;
}
static FILE *getiofile (lua_State *L, int findex) {
FILE *f;
lua_rawgeti(L, LUA_ENVIRONINDEX, findex);
f = *(FILE **)lua_touserdata(L, -1);
if (f == NULL)
luaL_error(L, "standard %s file is closed", fnames[findex - 1]);
return f;
}
static int g_iofile (lua_State *L, int f, const char *mode) {
if (!lua_isnoneornil(L, 1)) {
const char *filename = lua_tostring(L, 1);
if (filename) {
FILE **pf = newfile(L);
*pf = fopen(filename, mode);
if (*pf == NULL)
fileerror(L, 1, filename);
}
else {
tofile(L); /* check that it's a valid file handle */
lua_pushvalue(L, 1);
}
lua_rawseti(L, LUA_ENVIRONINDEX, f);
}
/* return current value */
lua_rawgeti(L, LUA_ENVIRONINDEX, f);
return 1;
}
static int io_input (lua_State *L) {
return g_iofile(L, IO_INPUT, "r");
}
static int io_output (lua_State *L) {
return g_iofile(L, IO_OUTPUT, "w");
}
static int io_readline (lua_State *L);
static void aux_lines (lua_State *L, int idx, int toclose) {
lua_pushvalue(L, idx);
lua_pushboolean(L, toclose); /* close/not close file when finished */
lua_pushcclosure(L, io_readline, 2);
}
static int f_lines (lua_State *L) {
tofile(L); /* check that it's a valid file handle */
aux_lines(L, 1, 0);
return 1;
}
static int io_lines (lua_State *L) {
if (lua_isnoneornil(L, 1)) { /* no arguments? */
/* will iterate over default input */
lua_rawgeti(L, LUA_ENVIRONINDEX, IO_INPUT);
return f_lines(L);
}
else {
const char *filename = luaL_checkstring(L, 1);
FILE **pf = newfile(L);
*pf = fopen(filename, "r");
if (*pf == NULL)
fileerror(L, 1, filename);
aux_lines(L, lua_gettop(L), 1);
return 1;
}
}
/*
** {======================================================
** READ
** =======================================================
*/
static int read_number (lua_State *L, FILE *f) {
lua_Number d;
if (fscanf(f, LUA_NUMBER_SCAN, &d) == 1) {
lua_pushnumber(L, d);
return 1;
}
else return 0; /* read fails */
}
static int test_eof (lua_State *L, FILE *f) {
int c = getc(f);
ungetc(c, f);
lua_pushlstring(L, NULL, 0);
return (c != EOF);
}
static int read_line (lua_State *L, FILE *f) {
luaL_Buffer b;
luaL_buffinit(L, &b);
for (;;) {
size_t l;
char *p = luaL_prepbuffer(&b);
if (fgets(p, LUAL_BUFFERSIZE, f) == NULL) { /* eof? */
luaL_pushresult(&b); /* close buffer */
return (lua_objlen(L, -1) > 0); /* check whether read something */
}
l = strlen(p);
if (l == 0 || p[l-1] != '\n')
luaL_addsize(&b, l);
else {
luaL_addsize(&b, l - 1); /* do not include `eol' */
luaL_pushresult(&b); /* close buffer */
return 1; /* read at least an `eol' */
}
}
}
static int read_chars (lua_State *L, FILE *f, size_t n) {
size_t rlen; /* how much to read */
size_t nr; /* number of chars actually read */
luaL_Buffer b;
luaL_buffinit(L, &b);
rlen = LUAL_BUFFERSIZE; /* try to read that much each time */
do {
char *p = luaL_prepbuffer(&b);
if (rlen > n) rlen = n; /* cannot read more than asked */
nr = fread(p, sizeof(char), rlen, f);
luaL_addsize(&b, nr);
n -= nr; /* still have to read `n' chars */
} while (n > 0 && nr == rlen); /* until end of count or eof */
luaL_pushresult(&b); /* close buffer */
return (n == 0 || lua_objlen(L, -1) > 0);
}
static int g_read (lua_State *L, FILE *f, int first) {
int nargs = lua_gettop(L) - 1;
int success;
int n;
clearerr(f);
if (nargs == 0) { /* no arguments? */
success = read_line(L, f);
n = first+1; /* to return 1 result */
}
else { /* ensure stack space for all results and for auxlib's buffer */
luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments");
success = 1;
for (n = first; nargs-- && success; n++) {
if (lua_type(L, n) == LUA_TNUMBER) {
size_t l = (size_t)lua_tointeger(L, n);
success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l);
}
else {
const char *p = lua_tostring(L, n);
luaL_argcheck(L, p && p[0] == '*', n, "invalid option");
switch (p[1]) {
case 'n': /* number */
success = read_number(L, f);
break;
case 'l': /* line */
success = read_line(L, f);
break;
case 'a': /* file */
read_chars(L, f, ~((size_t)0)); /* read MAX_SIZE_T chars */
success = 1; /* always success */
break;
default:
return luaL_argerror(L, n, "invalid format");
}
}
}
}
if (ferror(f))
return pushresult(L, 0, NULL);
if (!success) {
lua_pop(L, 1); /* remove last result */
lua_pushnil(L); /* push nil instead */
}
return n - first;
}
static int io_read (lua_State *L) {
return g_read(L, getiofile(L, IO_INPUT), 1);
}
static int f_read (lua_State *L) {
return g_read(L, tofile(L), 2);
}
static int io_readline (lua_State *L) {
FILE *f = *(FILE **)lua_touserdata(L, lua_upvalueindex(1));
int sucess;
if (f == NULL) /* file is already closed? */
luaL_error(L, "file is already closed");
sucess = read_line(L, f);
if (ferror(f))
return luaL_error(L, "%s", strerror(errno));
if (sucess) return 1;
else { /* EOF */
if (lua_toboolean(L, lua_upvalueindex(2))) { /* generator created file? */
lua_settop(L, 0);
lua_pushvalue(L, lua_upvalueindex(1));
aux_close(L); /* close it */
}
return 0;
}
}
/* }====================================================== */
static int g_write (lua_State *L, FILE *f, int arg) {
int nargs = lua_gettop(L) - 1;
int status = 1;
size_t count;
for (; nargs--; arg++) {
if (lua_type(L, arg) == LUA_TNUMBER) {
/* optimization: could be done exactly as for strings */
status = status &&
fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
}
else {
size_t l;
const char *s = luaL_checklstring(L, arg, &l);
count += l;
if (ftell(f) + l > FILELIMIT)
{
luaL_error(L,"write limit bypassed in file. Changes have been discarded.");
break;
}
status = status && (fwrite(s, sizeof(char), l, f) == l);
}
}
return pushresult(L, status, NULL);
}
static int io_write (lua_State *L) {
return g_write(L, getiofile(L, IO_OUTPUT), 1);
}
static int f_write (lua_State *L) {
return g_write(L, tofile(L), 2);
}
static int f_seek (lua_State *L) {
static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END};
static const char *const modenames[] = {"set", "cur", "end", NULL};
FILE *f = tofile(L);
int op = luaL_checkoption(L, 2, "cur", modenames);
long offset = luaL_optlong(L, 3, 0);
op = fseek(f, offset, mode[op]);
if (op)
return pushresult(L, 0, NULL); /* error */
else {
lua_pushinteger(L, ftell(f));
return 1;
}
}
static int f_setvbuf (lua_State *L) {
static const int mode[] = {_IONBF, _IOFBF, _IOLBF};
static const char *const modenames[] = {"no", "full", "line", NULL};
FILE *f = tofile(L);
int op = luaL_checkoption(L, 2, NULL, modenames);
lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE);
int res = setvbuf(f, NULL, mode[op], sz);
return pushresult(L, res == 0, NULL);
}
static int io_flush (lua_State *L) {
return pushresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0, NULL);
}
static int f_flush (lua_State *L) {
return pushresult(L, fflush(tofile(L)) == 0, NULL);
}
static const luaL_Reg iolib[] = {
{"flush", io_flush},
{"input", io_input},
{"lines", io_lines},
{"open", io_open},
{"output", io_output},
{"read", io_read},
{"tmpfile", io_tmpfile},
{"type", io_type},
{"write", io_write},
{NULL, NULL}
};
static const luaL_Reg flib[] = {
{"flush", f_flush},
{"lines", f_lines},
{"read", f_read},
{"seek", f_seek},
{"setvbuf", f_setvbuf},
{"write", f_write},
{"__gc", io_gc},
{"__tostring", io_tostring},
{NULL, NULL}
};
static void createmeta (lua_State *L) {
luaL_newmetatable(L, LUA_FILEHANDLE); /* create metatable for file handles */
lua_pushvalue(L, -1); /* push metatable */
lua_setfield(L, -2, "__index"); /* metatable.__index = metatable */
luaL_register(L, NULL, flib); /* file methods */
}
static void createstdfile (lua_State *L, FILE *f, int k, const char *fname) {
*newfile(L) = f;
if (k > 0) {
lua_pushvalue(L, -1);
lua_rawseti(L, LUA_ENVIRONINDEX, k);
}
lua_pushvalue(L, -2); /* copy environment */
lua_setfenv(L, -2); /* set it */
lua_setfield(L, -3, fname);
}
static void newfenv (lua_State *L, lua_CFunction cls) {
lua_createtable(L, 0, 1);
lua_pushcfunction(L, cls);
lua_setfield(L, -2, "__close");
}
LUALIB_API int luaopen_io (lua_State *L) {
createmeta(L);
/* create (private) environment (with fields IO_INPUT, IO_OUTPUT, __close) */
newfenv(L, io_fclose);
lua_replace(L, LUA_ENVIRONINDEX);
/* open library */
luaL_register(L, LUA_IOLIBNAME, iolib);
/* create (and set) default files */
newfenv(L, io_noclose); /* close function for default files */
createstdfile(L, stdin, IO_INPUT, "stdin");
createstdfile(L, stdout, IO_OUTPUT, "stdout");
createstdfile(L, stderr, 0, "stderr");
lua_pop(L, 1); /* pop environment for default files */
return 1;
}

3
src/blua/lualib.h
View File

@ -21,6 +21,9 @@ LUALIB_API int (luaopen_base) (lua_State *L);
#define LUA_TABLIBNAME "table"
LUALIB_API int (luaopen_table) (lua_State *L);
#define LUA_IOLIBNAME "io"
LUALIB_API int (luaopen_io) (lua_State *L);
#define LUA_STRLIBNAME "string"
LUALIB_API int (luaopen_string) (lua_State *L);

26
src/d_clisrv.c
View File

@ -3164,6 +3164,8 @@ void D_QuitNetGame(void)
// abort send/receive of files
CloseNetFile();
RemoveLuaFileTransfers();
waitingforluafiletransfer = false;
if (server)
{
@ -3534,6 +3536,10 @@ static void HandleConnect(SINT8 node)
SV_SendRefuse(node, M_GetText("Too many players from\nthis node."));
else if (netgame && !netbuffer->u.clientcfg.localplayers) // Stealth join?
SV_SendRefuse(node, M_GetText("No players from\nthis node."));
#ifdef HAVE_BLUA
else if (luafiletransfers)
SV_SendRefuse(node, M_GetText("The server is broadcasting a file\nrequested by a Lua script.\nPlease wait a bit and then\ntry rejoining."));
#endif
else
{
#ifndef NONET
@ -4117,6 +4123,20 @@ static void HandlePacketFromPlayer(SINT8 node)
Net_CloseConnection(node);
nodeingame[node] = false;
break;
#ifdef HAVE_BLUA
case PT_ASKLUAFILE:
if (server && luafiletransfers && luafiletransfers->nodestatus[node] == LFTNS_ASKED)
{
char *name = va("%s" PATHSEP "%s", luafiledir, luafiletransfers->filename);
boolean textmode = !strchr(luafiletransfers->mode, 'b');
SV_SendLuaFile(node, name, textmode);
}
break;
case PT_HASLUAFILE:
if (server && luafiletransfers && luafiletransfers->nodestatus[node] == LFTNS_SENDING)
SV_HandleLuaFileSent(node);
break;
#endif
// -------------------------------------------- CLIENT RECEIVE ----------
case PT_RESYNCHEND:
// Only accept PT_RESYNCHEND from the server.
@ -4244,6 +4264,12 @@ static void HandlePacketFromPlayer(SINT8 node)
if (client)
Got_Filetxpak();
break;
#ifdef HAVE_BLUA
case PT_SENDINGLUAFILE:
if (client)
CL_PrepareDownloadLuaFile();
break;
#endif
default:
DEBFILE(va("UNKNOWN PACKET TYPE RECEIVED %d from host %d\n",
netbuffer->packettype, node));

6
src/d_clisrv.h
View File

@ -67,6 +67,12 @@ typedef enum
PT_RESYNCHEND, // Player is now resynched and is being requested to remake the gametic
PT_RESYNCHGET, // Player got resynch packet
#ifdef HAVE_BLUA
PT_SENDINGLUAFILE, // Server telling a client Lua needs to open a file
PT_ASKLUAFILE, // Client telling the server they don't have the file
PT_HASLUAFILE, // Client telling the server they have the file
#endif
// Add non-PT_CANFAIL packet types here to avoid breaking MS compatibility.
PT_CANFAIL, // This is kind of a priority. Anything bigger than CANFAIL

3
src/d_main.c
View File

@ -1113,6 +1113,7 @@ void D_SRB2Main(void)
// can't use sprintf since there is %u in savegamename
strcatbf(savegamename, srb2home, PATHSEP);
snprintf(luafiledir, sizeof luafiledir, "%s" PATHSEP "luafiles", srb2home);
#else
snprintf(srb2home, sizeof srb2home, "%s", userhome);
snprintf(downloaddir, sizeof downloaddir, "%s", userhome);
@ -1123,6 +1124,8 @@ void D_SRB2Main(void)
// can't use sprintf since there is %u in savegamename
strcatbf(savegamename, userhome, PATHSEP);
snprintf(luafiledir, sizeof luafiledir, "%s" PATHSEP "luafiles", userhome);
#endif
}

8
src/d_net.c
View File

@ -715,6 +715,10 @@ void Net_CloseConnection(INT32 node)
InitNode(&nodes[node]);
SV_AbortSendFiles(node);
#ifdef HAVE_BLUA
if (server)
SV_AbortLuaFileTransfer(node);
#endif
I_NetFreeNodenum(node);
#endif
}
@ -799,6 +803,10 @@ static const char *packettypename[NUMPACKETTYPE] =
"RESYNCHEND",
"RESYNCHGET",
"SENDINGLUAFILE",
"ASKLUAFILE",
"HASLUAFILE",
"FILEFRAGMENT",
"TEXTCMD",
"TEXTCMD2",

4
src/d_netcmd.c
View File

@ -417,7 +417,8 @@ const char *netxcmdnames[MAXNETXCMD - 1] =
"SUICIDE",
#ifdef HAVE_BLUA
"LUACMD",
"LUAVAR"
"LUAVAR",
"LUAFILE"
#endif
};
@ -453,6 +454,7 @@ void D_RegisterServerCommands(void)
RegisterNetXCmd(XD_RUNSOC, Got_RunSOCcmd);
#ifdef HAVE_BLUA
RegisterNetXCmd(XD_LUACMD, Got_Luacmd);
RegisterNetXCmd(XD_LUAFILE, Got_LuaFile);
#endif
// Remote Administration

1
src/d_netcmd.h
View File

@ -145,6 +145,7 @@ typedef enum
#ifdef HAVE_BLUA
XD_LUACMD, // 22
XD_LUAVAR, // 23
XD_LUAFILE, // 24
#endif
MAXNETXCMD
} netxcmd_t;

252
src/d_netfil.c
View File

@ -69,6 +69,7 @@ typedef struct filetx_s
UINT32 size; // Size of the file
UINT8 fileid;
INT32 node; // Destination
boolean textmode; // For files requested by Lua without the "b" option
struct filetx_s *next; // Next file in the list
} filetx_t;
@ -94,6 +95,13 @@ char downloaddir[512] = "DOWNLOAD";
INT32 lastfilenum = -1;
#endif
#ifdef HAVE_BLUA
luafiletransfer_t *luafiletransfers = NULL;
boolean waitingforluafiletransfer = false;
char luafiledir[256] = "luafiles";
#endif
/** Fills a serverinfo packet with information about wad files loaded.
*
* \todo Give this function a better name since it is in global scope.
@ -159,6 +167,7 @@ void D_ParseFileneeded(INT32 fileneedednum_parm, UINT8 *fileneededstr)
fileneeded[i].file = NULL; // The file isn't open yet
READSTRINGN(p, fileneeded[i].filename, MAX_WADPATH); // The next bytes are the file name
READMEM(p, fileneeded[i].md5sum, 16); // The last 16 bytes are the file checksum
fileneeded[i].textmode = false;
}
}
@ -170,6 +179,7 @@ void CL_PrepareDownloadSaveGame(const char *tmpsave)
fileneeded[0].file = NULL;
memset(fileneeded[0].md5sum, 0, 16);
strcpy(fileneeded[0].filename, tmpsave);
fileneeded[0].textmode = false;
}
/** Checks the server to see if we CAN download all the files,
@ -448,6 +458,164 @@ void CL_LoadServerFiles(void)
}
}
#ifdef HAVE_BLUA
void AddLuaFileTransfer(const char *filename, const char *mode)
{
luafiletransfer_t **prevnext; // A pointer to the "next" field of the last transfer in the list
luafiletransfer_t *filetransfer;
static INT32 id;
//CONS_Printf("AddLuaFileTransfer \"%s\"\n", filename);
// Find the last transfer in the list and set a pointer to its "next" field
prevnext = &luafiletransfers;
while (*prevnext)
prevnext = &((*prevnext)->next);
// Allocate file transfer information and append it to the transfer list
filetransfer = malloc(sizeof(luafiletransfer_t));
if (!filetransfer)
I_Error("AddLuaFileTransfer: Out of memory\n");
*prevnext = filetransfer;
filetransfer->next = NULL;
// Allocate the file name
filetransfer->filename = strdup(filename);
if (!filetransfer->filename)
I_Error("AddLuaFileTransfer: Out of memory\n");
// Create and allocate the real file name
if (server)
filetransfer->realfilename = strdup(va("%s" PATHSEP "%s",
luafiledir, filename));
else
filetransfer->realfilename = strdup(va("%s" PATHSEP "shared" PATHSEP "$$$%d%d.tmp",
luafiledir, rand(), rand()));
if (!filetransfer->realfilename)
I_Error("AddLuaFileTransfer: Out of memory\n");
strlcpy(filetransfer->mode, mode, sizeof(filetransfer->mode));
if (server)
{
INT32 i;
// Set status to "waiting" for everyone
for (i = 0; i < MAXNETNODES; i++)
filetransfer->nodestatus[i] = LFTNS_WAITING;
if (!luafiletransfers->next) // Only if there is no transfer already going on
{
if (FIL_FileOK(filetransfer->realfilename))
SV_PrepareSendLuaFileToNextNode();
else
{
// Send a net command with 0 as its first byte to indicate the file couldn't be opened
UINT8 success = 0;
SendNetXCmd(XD_LUAFILE, &success, 1);
}
}
}
// Store the callback so it can be called once everyone has the file
filetransfer->id = id;
StoreLuaFileCallback(id);
id++;
if (waitingforluafiletransfer)
{
waitingforluafiletransfer = false;
CL_PrepareDownloadLuaFile();
}
}
void SV_PrepareSendLuaFileToNextNode(void)
{
INT32 i;
UINT8 success = 1;
// Find a client to send the file to
for (i = 1; i < MAXNETNODES; i++)
if (nodeingame[i] && luafiletransfers->nodestatus[i] == LFTNS_WAITING) // Node waiting
{
// Tell the client we're about to send them the file
netbuffer->packettype = PT_SENDINGLUAFILE;
if (!HSendPacket(i, true, 0, 0))
I_Error("Failed to send a PT_SENDINGLUAFILE packet\n"); // !!! Todo: Handle failure a bit better lol
luafiletransfers->nodestatus[i] = LFTNS_ASKED;
return;
}
// No client found, everyone has the file
// Send a net command with 1 as its first byte to indicate the file could be opened
SendNetXCmd(XD_LUAFILE, &success, 1);
}
void SV_HandleLuaFileSent(UINT8 node)
{
luafiletransfers->nodestatus[node] = LFTNS_SENT;
SV_PrepareSendLuaFileToNextNode();
}
void RemoveLuaFileTransfer(void)
{
luafiletransfer_t *filetransfer = luafiletransfers;
RemoveLuaFileCallback(filetransfer->id);
luafiletransfers = filetransfer->next;
free(filetransfer->filename);
free(filetransfer->realfilename);
free(filetransfer);
}
void RemoveLuaFileTransfers(void)
{
while (luafiletransfers)
RemoveLuaFileTransfer();
}
void SV_AbortLuaFileTransfer(INT32 node)
{
if (luafiletransfers
&& (luafiletransfers->nodestatus[node] == LFTNS_ASKED
|| luafiletransfers->nodestatus[node] == LFTNS_SENDING))
{
luafiletransfers->nodestatus[node] = LFTNS_WAITING;
SV_PrepareSendLuaFileToNextNode();
}
}
void CL_PrepareDownloadLuaFile(void)
{
// If there is no transfer in the list, this normally means the server
// called io.open before us, so we have to wait until we call it too
if (!luafiletransfers)
{
waitingforluafiletransfer = true;
return;
}
// Tell the server we are ready to receive the file
netbuffer->packettype = PT_ASKLUAFILE;
HSendPacket(servernode, true, 0, 0);
fileneedednum = 1;
fileneeded[0].status = FS_REQUESTED;
fileneeded[0].totalsize = UINT32_MAX;
fileneeded[0].file = NULL;
memset(fileneeded[0].md5sum, 0, 16);
strcpy(fileneeded[0].filename, luafiletransfers->realfilename);
fileneeded[0].textmode = !strchr(luafiletransfers->mode, 'b');
// Make sure all directories in the file path exist
MakePathDirs(fileneeded[0].filename);
}
#endif
// Number of files to send
// Little optimization to quickly test if there is a file in the queue
static INT32 filestosend = 0;
@ -458,6 +626,7 @@ static INT32 filestosend = 0;
* \param filename The file to send
* \param fileid ???
* \sa SV_SendRam
* \sa SV_SendLuaFile
*
*/
static boolean SV_SendFile(INT32 node, const char *filename, UINT8 fileid)
@ -548,6 +717,7 @@ static boolean SV_SendFile(INT32 node, const char *filename, UINT8 fileid)
* \param freemethod How to free the block after it has been sent
* \param fileid ???
* \sa SV_SendFile
* \sa SV_SendLuaFile
*
*/
void SV_SendRam(INT32 node, void *data, size_t size, freemethod_t freemethod, UINT8 fileid)
@ -579,6 +749,57 @@ void SV_SendRam(INT32 node, void *data, size_t size, freemethod_t freemethod, UI
filestosend++;
}
#ifdef HAVE_BLUA
/** Adds a file requested by Lua to the file list for a node
*
* \param node The node to send the file to
* \param filename The file to send
* \sa SV_SendFile
* \sa SV_SendRam
*
*/
boolean SV_SendLuaFile(INT32 node, const char *filename, boolean textmode)
{
filetx_t **q; // A pointer to the "next" field of the last file in the list
filetx_t *p; // The new file request
//INT32 i;
//char wadfilename[MAX_WADPATH];
luafiletransfers->nodestatus[node] = LFTNS_SENDING;
// Find the last file in the list and set a pointer to its "next" field
q = &transfer[node].txlist;
while (*q)
q = &((*q)->next);
// Allocate a file request and append it to the file list
p = *q = (filetx_t *)malloc(sizeof (filetx_t));
if (!p)
I_Error("SV_SendLuaFile: No more memory\n");
// Initialise with zeros
memset(p, 0, sizeof (filetx_t));
// Allocate the file name
p->id.filename = (char *)malloc(MAX_WADPATH); // !!!
if (!p->id.filename)
I_Error("SV_SendLuaFile: No more memory\n");
// Set the file name and get rid of the path
strlcpy(p->id.filename, filename, MAX_WADPATH); // !!!
//nameonly(p->id.filename);
// Open in text mode if required by the Lua script
p->textmode = textmode;
DEBFILE(va("Sending Lua file %s to %d\n", filename, node));
p->ram = SF_FILE; // It's a file, we need to close it and free its name once we're done sending it
p->next = NULL; // End of list
filestosend++;
return true;
}
#endif
/** Stops sending a file for a node, and removes the file request from the list,
* either because the file has been fully sent or because the node was disconnected
*
@ -684,7 +905,7 @@ void SV_FileSendTicker(void)
long filesize;
transfer[i].currentfile =
fopen(f->id.filename, "rb");
fopen(f->id.filename, f->textmode ? "r" : "rb");
if (!transfer[i].currentfile)
I_Error("File %s does not exist",
@ -715,11 +936,20 @@ void SV_FileSendTicker(void)
size = f->size-transfer[i].position;
if (ram)
M_Memcpy(p->data, &f->id.ram[transfer[i].position], size);
else if (fread(p->data, 1, size, transfer[i].currentfile) != size)
I_Error("SV_FileSendTicker: can't read %s byte on %s at %d because %s", sizeu1(size), f->id.filename, transfer[i].position, M_FileError(transfer[i].currentfile));
else
{
size_t n = fread(p->data, 1, size, transfer[i].currentfile);
if (n != size) // Either an error or Windows turning CR-LF into LF
{
if (f->textmode && feof(transfer[i].currentfile))
size = n;
else if (fread(p->data, 1, size, transfer[i].currentfile) != size)
I_Error("SV_FileSendTicker: can't read %s byte on %s at %d because %s", sizeu1(size), f->id.filename, transfer[i].position, M_FileError(transfer[i].currentfile));
}
}
p->position = LONG(transfer[i].position);
// Put flag so receiver knows the total size
if (transfer[i].position + size == f->size)
if (transfer[i].position + size == f->size || (f->textmode && feof(transfer[i].currentfile)))
p->position |= LONG(0x80000000);
p->fileid = f->fileid;
p->size = SHORT((UINT16)size);
@ -728,7 +958,7 @@ void SV_FileSendTicker(void)
if (HSendPacket(i, true, 0, FILETXHEADER + size)) // Reliable SEND
{ // Success
transfer[i].position = (UINT32)(transfer[i].position + size);
if (transfer[i].position == f->size) // Finish?
if (transfer[i].position == f->size || (f->textmode && feof(transfer[i].currentfile))) // Finish?
SV_EndFileSend(i);
}
else
@ -772,7 +1002,7 @@ void Got_Filetxpak(void)
{
if (file->file)
I_Error("Got_Filetxpak: already open file\n");
file->file = fopen(filename, "wb");
file->file = fopen(filename, file->textmode ? "w" : "wb");
if (!file->file)
I_Error("Can't create file %s: %s", filename, strerror(errno));
CONS_Printf("\r%s...\n",filename);
@ -793,7 +1023,7 @@ void Got_Filetxpak(void)
}
// We can receive packet in the wrong order, anyway all os support gaped file
fseek(file->file, pos, SEEK_SET);
if (fwrite(netbuffer->u.filetxpak.data,size,1,file->file) != 1)
if (size && fwrite(netbuffer->u.filetxpak.data,size,1,file->file) != 1)
I_Error("Can't write to %s: %s\n",filename, M_FileError(file->file));
file->currentsize += size;
@ -805,6 +1035,14 @@ void Got_Filetxpak(void)
file->status = FS_FOUND;
CONS_Printf(M_GetText("Downloading %s...(done)\n"),
filename);
#ifdef HAVE_BLUA
if (luafiletransfers)
{
// Tell the server we have received the file
netbuffer->packettype = PT_HASLUAFILE;
HSendPacket(servernode, true, 0, 0);
}
#endif
}
}
else

40
src/d_netfil.h
View File

@ -13,6 +13,7 @@
#ifndef __D_NETFIL__
#define __D_NETFIL__
#include "d_net.h"
#include "w_wad.h"
typedef enum
@ -43,6 +44,7 @@ typedef struct
UINT32 currentsize;
UINT32 totalsize;
filestatus_t status; // The value returned by recsearch
boolean textmode; // For files requested by Lua without the "b" option
} fileneeded_t;
extern INT32 fileneedednum;
@ -70,6 +72,44 @@ boolean CL_CheckDownloadable(void);
boolean CL_SendRequestFile(void);
boolean Got_RequestFilePak(INT32 node);
#ifdef HAVE_BLUA
typedef enum
{
LFTNS_WAITING, // This node is waiting for the server to send the file
LFTNS_ASKED, // The server has told the node they're ready to send the file
LFTNS_SENDING, // The server is sending the file to this node
LFTNS_SENT // The node already has the file
} luafiletransfernodestatus_t;
typedef struct luafiletransfer_s
{
char *filename;
char *realfilename;
char mode[4]; // rb+/wb+/ab+ + null character
INT32 id; // Callback ID
luafiletransfernodestatus_t nodestatus[MAXNETNODES];
struct luafiletransfer_s *next;
} luafiletransfer_t;
extern luafiletransfer_t *luafiletransfers;
extern boolean waitingforluafiletransfer;
extern char luafiledir[256];
void AddLuaFileTransfer(const char *filename, const char *mode);
void SV_PrepareSendLuaFileToNextNode(void);
boolean SV_SendLuaFile(INT32 node, const char *filename, boolean textmode);
void SV_PrepareSendLuaFile(const char *filename);
void SV_HandleLuaFileSent(UINT8 node);
void RemoveLuaFileTransfer(void);
void RemoveLuaFileTransfers(void);
void SV_AbortLuaFileTransfer(INT32 node);
void CL_PrepareDownloadLuaFile(void);
void Got_LuaFile(UINT8 **cp, INT32 playernum);
void StoreLuaFileCallback(INT32 id);
void RemoveLuaFileCallback(INT32 id);
void MakePathDirs(char *path);
#endif
void SV_AbortSendFiles(INT32 node);
void CloseNetFile(void);