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Merge branch 'fix-demo-file-list-crash' into 'next'

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Improved version checks for demo file lists

See merge request STJr/SRB2!2095
This commit is contained in:
Sal 2023-08-04 20:05:12 +00:00
commit e2c6a3365f
1 changed files with 32 additions and 35 deletions
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67
src/g_demo.c
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@ -1617,7 +1617,7 @@ void G_BeginMetal(void)
oldmetal.angle = mo->angle>>24;
}
static void G_LoadDemoExtraFiles(UINT8 **pp)
static void G_LoadDemoExtraFiles(UINT8 **pp, UINT16 this_demo_version)
{
UINT16 totalfiles;
char filename[MAX_WADPATH];
@ -1627,6 +1627,12 @@ static void G_LoadDemoExtraFiles(UINT8 **pp)
boolean alreadyloaded;
UINT16 i, j;
if (this_demo_version < 0x0010)
{
// demo has no file list
return;
}
totalfiles = READUINT16((*pp));
for (i = 0; i < totalfiles; ++i)
{
@ -1686,12 +1692,12 @@ static void G_LoadDemoExtraFiles(UINT8 **pp)
}
}
static void G_SkipDemoExtraFiles(UINT8 **pp)
static void G_SkipDemoExtraFiles(UINT8 **pp, UINT16 this_demo_version)
{
UINT16 totalfiles;
UINT16 i;
if (demoversion < 0x0010)
if (this_demo_version < 0x0010)
{
// demo has no file list
return;
@ -1707,7 +1713,7 @@ static void G_SkipDemoExtraFiles(UINT8 **pp)
// G_CheckDemoExtraFiles: checks if our loaded WAD list matches the demo's.
// Enabling quick prevents filesystem checks to see if needed files are available to load.
static UINT8 G_CheckDemoExtraFiles(UINT8 **pp, boolean quick)
static UINT8 G_CheckDemoExtraFiles(UINT8 **pp, boolean quick, UINT16 this_demo_version)
{
UINT16 totalfiles, filesloaded, nmusfilecount;
char filename[MAX_WADPATH];
@ -1717,7 +1723,7 @@ static UINT8 G_CheckDemoExtraFiles(UINT8 **pp, boolean quick)
UINT16 i, j;
UINT8 error = DFILE_ERROR_NONE;
if (demoversion < 0x0010)
if (this_demo_version < 0x0010)
{
// demo has no file list
return DFILE_ERROR_NONE;
@ -1816,10 +1822,9 @@ UINT8 G_CmpDemoTime(char *oldname, char *newname)
UINT8 *buffer,*p;
UINT8 flags;
UINT32 oldtime, newtime, oldscore, newscore;
UINT16 oldrings, newrings, oldversion;
UINT16 oldrings, newrings, oldversion, newversion;
size_t bufsize ATTRUNUSED;
UINT8 c;
UINT16 s ATTRUNUSED;
UINT8 aflags = 0;
// load the new file
@ -1835,15 +1840,15 @@ UINT8 G_CmpDemoTime(char *oldname, char *newname)
I_Assert(c == VERSION);
c = READUINT8(p); // SUBVERSION
I_Assert(c == SUBVERSION);
s = READUINT16(p);
I_Assert(s >= 0x000c);
newversion = READUINT16(p);
I_Assert(newversion == DEMOVERSION);
p += 16; // demo checksum
I_Assert(!memcmp(p, "PLAY", 4));
p += 4; // PLAY
p += 2; // gamemap
p += 16; // map md5
flags = READUINT8(p); // demoflags
G_SkipDemoExtraFiles(&p);
G_SkipDemoExtraFiles(&p, newversion);
aflags = flags & (DF_RECORDATTACK|DF_NIGHTSATTACK);
I_Assert(aflags);
if (flags & DF_RECORDATTACK)
@ -1909,7 +1914,7 @@ UINT8 G_CmpDemoTime(char *oldname, char *newname)
p += 2; // gamemap
p += 16; // mapmd5
flags = READUINT8(p);
G_SkipDemoExtraFiles(&p);
G_SkipDemoExtraFiles(&p, oldversion);
if (!(flags & aflags))
{
CONS_Alert(CONS_NOTICE, M_GetText("File '%s' not from same game mode. It will be overwritten.\n"), oldname);
@ -2074,26 +2079,22 @@ void G_DoPlayDemo(char *defdemoname)
demoflags = READUINT8(demo_p);
if (demoversion < 0x0010)
{
; // Don't do anything with files.
}
else if (titledemo)
if (titledemo)
{
// Titledemos should always play and ought to always be compatible with whatever wadlist is running.
G_SkipDemoExtraFiles(&demo_p);
G_SkipDemoExtraFiles(&demo_p, demoversion);
}
else if (demofileoverride == DFILE_OVERRIDE_LOAD)
{
G_LoadDemoExtraFiles(&demo_p);
G_LoadDemoExtraFiles(&demo_p, demoversion);
}
else if (demofileoverride == DFILE_OVERRIDE_SKIP)
{
G_SkipDemoExtraFiles(&demo_p);
G_SkipDemoExtraFiles(&demo_p, demoversion);
}
else
{
UINT8 error = G_CheckDemoExtraFiles(&demo_p, false);
UINT8 error = G_CheckDemoExtraFiles(&demo_p, false, demoversion);
if (error)
{
@ -2302,6 +2303,13 @@ UINT8 G_CheckDemoForError(char *defdemoname)
{
lumpnum_t l;
char *n,*pdemoname;
UINT16 our_demo_version;
if (titledemo)
{
// Don't do anything with files for these.
return DFILE_ERROR_NONE;
}
n = defdemoname+strlen(defdemoname);
while (*n != '/' && *n != '\\' && n != defdemoname)
@ -2340,9 +2348,8 @@ UINT8 G_CheckDemoForError(char *defdemoname)
demo_p++; // version
demo_p++; // subversion
demoversion = READUINT16(demo_p);
demo_forwardmove_rng = (demoversion < 0x0010);
switch(demoversion)
our_demo_version = READUINT16(demo_p);
switch(our_demo_version)
{
case 0x000d:
case 0x000e:
@ -2368,17 +2375,7 @@ UINT8 G_CheckDemoForError(char *defdemoname)
demo_p++; // demoflags
// Don't do anything with files.
if (demoversion < 0x0010)
{
return DFILE_ERROR_NONE;
}
else if (titledemo)
{
return DFILE_ERROR_NONE;
}
return G_CheckDemoExtraFiles(&demo_p, true);
return G_CheckDemoExtraFiles(&demo_p, true, our_demo_version);
}
void G_AddGhost(char *defdemoname)
@ -2487,7 +2484,7 @@ void G_AddGhost(char *defdemoname)
return;
}
G_SkipDemoExtraFiles(&p); // Don't wanna modify the file list for ghosts.
G_SkipDemoExtraFiles(&p, ghostversion); // Don't wanna modify the file list for ghosts.
switch ((flags & DF_ATTACKMASK)>>DF_ATTACKSHIFT)
{