- do not use strtol for parsing critical values that can get large.

This function will truncate everything that is larger than LONG_MAX or smaller than LONG_MIN to fit into a long variable, but longs are 32 bit on Windows and 64 bit elsewhere, so to ensure consistency and the ability to parse larger values better use strtoll which does not truncate 32 bit values.
This commit is contained in:
Christoph Oelckers 2017-02-01 11:19:55 +01:00
parent 1fd37ff2ff
commit 6d28aa3541
20 changed files with 47 additions and 35 deletions

View file

@ -1190,7 +1190,7 @@ static void PrintSecretString(const char *string, bool thislevel)
{ {
if (string[1] == 'S' || string[1] == 's') if (string[1] == 'S' || string[1] == 's')
{ {
auto secnum = strtoul(string+2, (char**)&string, 10); auto secnum = (unsigned)strtoull(string+2, (char**)&string, 10);
if (*string == ';') string++; if (*string == ';') string++;
if (thislevel && secnum < level.sectors.Size()) if (thislevel && secnum < level.sectors.Size())
{ {
@ -1201,7 +1201,7 @@ static void PrintSecretString(const char *string, bool thislevel)
} }
else if (string[1] == 'T' || string[1] == 't') else if (string[1] == 'T' || string[1] == 't')
{ {
long tid = strtol(string+2, (char**)&string, 10); long tid = (long)strtoll(string+2, (char**)&string, 10);
if (*string == ';') string++; if (*string == ';') string++;
FActorIterator it(tid); FActorIterator it(tid);
AActor *actor; AActor *actor;

View file

@ -200,7 +200,7 @@ bool FBaseCVar::ToBool (UCVarValue value, ECVarType type)
else if (stricmp (value.String, "false") == 0) else if (stricmp (value.String, "false") == 0)
return false; return false;
else else
return !!strtol (value.String, NULL, 0); return !!strtoll (value.String, NULL, 0);
case CVAR_GUID: case CVAR_GUID:
return false; return false;
@ -233,7 +233,7 @@ int FBaseCVar::ToInt (UCVarValue value, ECVarType type)
else if (stricmp (value.String, "false") == 0) else if (stricmp (value.String, "false") == 0)
res = 0; res = 0;
else else
res = strtol (value.String, NULL, 0); res = (int)strtoll (value.String, NULL, 0);
break; break;
} }
case CVAR_GUID: res = 0; break; case CVAR_GUID: res = 0; break;
@ -458,7 +458,7 @@ UCVarValue FBaseCVar::FromString (const char *value, ECVarType type)
else if (stricmp (value, "false") == 0) else if (stricmp (value, "false") == 0)
ret.Bool = false; ret.Bool = false;
else else
ret.Bool = strtol (value, NULL, 0) != 0; ret.Bool = strtoll (value, NULL, 0) != 0;
break; break;
case CVAR_Int: case CVAR_Int:
@ -467,7 +467,7 @@ UCVarValue FBaseCVar::FromString (const char *value, ECVarType type)
else if (stricmp (value, "false") == 0) else if (stricmp (value, "false") == 0)
ret.Int = 0; ret.Int = 0;
else else
ret.Int = strtol (value, NULL, 0); ret.Int = (int)strtoll (value, NULL, 0);
break; break;
case CVAR_Float: case CVAR_Float:

View file

@ -705,7 +705,7 @@ void AddCommandString (char *cmd, int keynum)
if (cmd[4] == ' ') if (cmd[4] == ' ')
{ {
tics = strtol (cmd + 5, NULL, 0); tics = (int)strtoll (cmd + 5, NULL, 0);
} }
else else
{ {

View file

@ -885,7 +885,7 @@ static int PatchThing (int thingy)
while ((result = GetLine ()) == 1) while ((result = GetLine ()) == 1)
{ {
char *endptr; char *endptr;
unsigned long val = strtoul (Line2, &endptr, 10); unsigned long val = (unsigned long)strtoull (Line2, &endptr, 10);
size_t linelen = strlen (Line1); size_t linelen = strlen (Line1);
if (linelen == 10 && stricmp (Line1, "Hit points") == 0) if (linelen == 10 && stricmp (Line1, "Hit points") == 0)
@ -1064,11 +1064,7 @@ static int PatchThing (int thingy)
{ {
if (IsNum (strval)) if (IsNum (strval))
{ {
// I have no idea why everyone insists on using strtol here even though it fails value[0] |= (unsigned long)strtoll(strval, NULL, 10);
// dismally if a value is parsed where the highest bit it set. Do people really
// use negative values here? Let's better be safe and check both.
if (strchr(strval, '-')) value[0] |= (unsigned long)strtol(strval, NULL, 10);
else value[0] |= (unsigned long)strtoul(strval, NULL, 10);
vchanged[0] = true; vchanged[0] = true;
} }
else else

View file

@ -192,7 +192,7 @@ void FS_EmulateCmd(char * string)
else if (sc.Compare("gr_fogcolor")) else if (sc.Compare("gr_fogcolor"))
{ {
sc.MustGetString(); sc.MustGetString();
level.fadeto = strtol(sc.String, NULL, 16); level.fadeto = (uint32_t)strtoull(sc.String, NULL, 16);
} }
else else

View file

@ -1099,7 +1099,7 @@ void G_WorldDone (void)
if (strncmp (nextlevel, "enDSeQ", 6) == 0) if (strncmp (nextlevel, "enDSeQ", 6) == 0)
{ {
FName endsequence = ENamedName(strtol(nextlevel.GetChars()+6, NULL, 16)); FName endsequence = ENamedName(strtoll(nextlevel.GetChars()+6, NULL, 16));
// Strife needs a special case here to choose between good and sad ending. Bad is handled elsewhere. // Strife needs a special case here to choose between good and sad ending. Bad is handled elsewhere.
if (endsequence == NAME_Inter_Strife) if (endsequence == NAME_Inter_Strife)
{ {

View file

@ -552,7 +552,7 @@ CCMD(skyfog)
{ {
if (argv.argc()>1) if (argv.argc()>1)
{ {
skyfog=strtol(argv[1],NULL,0); skyfog = MAX(0, (int)strtoull(argv[1], NULL, 0));
} }
} }

View file

@ -666,7 +666,7 @@ static EColorRange ParseOptionColor(FScanner &sc, FOptionMenuDescriptor *desc)
cr = V_FindFontColor(sc.String); cr = V_FindFontColor(sc.String);
if (cr == CR_UNTRANSLATED && !sc.Compare("untranslated") && isdigit(sc.String[0])) if (cr == CR_UNTRANSLATED && !sc.Compare("untranslated") && isdigit(sc.String[0]))
{ {
if (strtol(sc.String, NULL, 0)) cr = OptionSettings.mFontColorHeader; if (strtoll(sc.String, NULL, 0)) cr = OptionSettings.mFontColorHeader;
} }
} }
return cr; return cr;

View file

@ -366,8 +366,8 @@ static bool GetSelectedSize (int *width, int *height)
char *breakpt; char *breakpt;
if (it->GetString(FOptionMenuScreenResolutionLine::SRL_INDEX+hsel, buffer, sizeof(buffer))) if (it->GetString(FOptionMenuScreenResolutionLine::SRL_INDEX+hsel, buffer, sizeof(buffer)))
{ {
*width = strtol (buffer, &breakpt, 10); *width = (int)strtoll (buffer, &breakpt, 10);
*height = strtol (breakpt+1, NULL, 10); *height = (int)strtoll (breakpt+1, NULL, 10);
return true; return true;
} }
} }

View file

@ -982,7 +982,12 @@ CCMD (dump3df)
{ {
if (argv.argc() > 1) if (argv.argc() > 1)
{ {
int sec = strtol(argv[1], NULL, 10); int sec = (int)strtoll(argv[1], NULL, 10);
if ((unsigned)sec >= level.sectors.Size())
{
Printf("Sector %d does not exist.\n", sec);
return;
}
sector_t *sector = &level.sectors[sec]; sector_t *sector = &level.sectors[sec];
TArray<F3DFloor*> & ffloors=sector->e->XFloor.ffloors; TArray<F3DFloor*> & ffloors=sector->e->XFloor.ffloors;

View file

@ -1086,12 +1086,12 @@ static void ReadArrayVars (FSerializer &file, FWorldGlobalArray *vars, size_t co
const char *arraykey; const char *arraykey;
while ((arraykey = file.GetKey())) while ((arraykey = file.GetKey()))
{ {
int i = (int)strtol(arraykey, nullptr, 10); int i = (int)strtoll(arraykey, nullptr, 10);
if (file.BeginObject(nullptr)) if (file.BeginObject(nullptr))
{ {
while ((arraykey = file.GetKey())) while ((arraykey = file.GetKey()))
{ {
int k = (int)strtol(arraykey, nullptr, 10); int k = (int)strtoll(arraykey, nullptr, 10);
int val; int val;
file(nullptr, val); file(nullptr, val);
vars[i].Insert(k, val); vars[i].Insert(k, val);

View file

@ -2540,7 +2540,7 @@ void P_ProcessSideTextures(bool checktranmap, side_t *sd, sector_t *sec, intmaps
case Sector_Set3DFloor: case Sector_Set3DFloor:
if (msd->toptexture[0]=='#') if (msd->toptexture[0]=='#')
{ {
sd->SetTexture(side_t::top, FNullTextureID() +(-strtol(&msd->toptexture[1], NULL, 10))); // store the alpha as a negative texture index sd->SetTexture(side_t::top, FNullTextureID() +(int)(-strtoll(&msd->toptexture[1], NULL, 10))); // store the alpha as a negative texture index
// This will be sorted out by the 3D-floor code later. // This will be sorted out by the 3D-floor code later.
} }
else else

View file

@ -731,7 +731,7 @@ FState *FStateDefinitions::ResolveGotoLabel (AActor *actor, PClassActor *mytype,
*pt = '\0'; *pt = '\0';
offset = pt + 1; offset = pt + 1;
} }
v = offset ? strtol (offset, NULL, 0) : 0; v = offset ? (int)strtoll (offset, NULL, 0) : 0;
// Get the state's address. // Get the state's address.
if (type == mytype) if (type == mytype)

View file

@ -103,7 +103,7 @@ loop:
c = *sourcep++; c = *sourcep++;
if (c == 'x' || c == 'X') if (c == 'x' || c == 'X')
{ {
yylval->val = (int)strtol(sourcep, &sourcep, 16); yylval->val = (int)strtoll(sourcep, &sourcep, 16);
return TokenTrans[NUM]; return TokenTrans[NUM];
} }
else else
@ -114,7 +114,7 @@ loop:
char *endp; char *endp;
sourcep--; sourcep--;
yylval->val = (int)strtol(sourcep, &endp, 10); yylval->val = (int)strtoll(sourcep, &endp, 10);
if (*endp == '.') if (*endp == '.')
{ {
// It's a float // It's a float

View file

@ -239,7 +239,7 @@ struct FUDMFKey
FUDMFKey& operator =(const FString &val) FUDMFKey& operator =(const FString &val)
{ {
Type = UDMF_String; Type = UDMF_String;
IntVal = strtol(val.GetChars(), NULL, 0); IntVal = (int)strtoll(val.GetChars(), NULL, 0);
FloatVal = strtod(val.GetChars(), NULL); FloatVal = strtod(val.GetChars(), NULL);
StringVal = val; StringVal = val;
return *this; return *this;

View file

@ -554,12 +554,12 @@ bool FScanner::GetToken ()
String[StringLen - 2] == 'u' || String[StringLen - 2] == 'U') String[StringLen - 2] == 'u' || String[StringLen - 2] == 'U')
{ {
TokenType = TK_UIntConst; TokenType = TK_UIntConst;
Number = strtoul(String, &stopper, 0); Number = strtoull(String, &stopper, 0);
Float = (unsigned)Number; Float = (unsigned)Number;
} }
else else
{ {
Number = strtol(String, &stopper, 0); Number = (int)strtoll(String, &stopper, 0);
Float = Number; Float = Number;
} }
} }
@ -660,7 +660,7 @@ bool FScanner::GetNumber ()
} }
else else
{ {
Number = strtol (String, &stopper, 0); Number = (int)strtoll (String, &stopper, 0);
if (*stopper != 0) if (*stopper != 0)
{ {
ScriptError ("SC_GetNumber: Bad numeric constant \"%s\".", String); ScriptError ("SC_GetNumber: Bad numeric constant \"%s\".", String);
@ -715,7 +715,7 @@ bool FScanner::CheckNumber ()
} }
else else
{ {
Number = strtol (String, &stopper, 0); Number = (int)strtoll (String, &stopper, 0);
if (*stopper != 0) if (*stopper != 0)
{ {
UnGet(); UnGet();

View file

@ -635,7 +635,7 @@ static void ParseSpriteFrames (PClassActor *info, TArray<FState> &states, TArray
char *stop; char *stop;
*colon = 0; *colon = 0;
rate = strtol (token, &stop, 10); rate = (int)strtoll (token, &stop, 10);
if (stop == token || rate < 1 || rate > 65534) if (stop == token || rate < 1 || rate > 65534)
{ {
sc.ScriptError ("Rates must be in the range [0,65534]"); sc.ScriptError ("Rates must be in the range [0,65534]");

View file

@ -346,6 +346,16 @@ static void PrintProperty(FLispString &out, ZCC_TreeNode *node)
out.Close(); out.Close();
} }
static void PrintStaticArrayState(FLispString &out, ZCC_TreeNode *node)
{
auto *snode = (ZCC_StaticArrayStatement *)node;
out.Break();
out.Open("static-array");
out.AddName(snode->Id);
PrintNodes(out, snode->Values, false, true);
out.Close();
}
static void PrintEnum(FLispString &out, ZCC_TreeNode *node) static void PrintEnum(FLispString &out, ZCC_TreeNode *node)
{ {
ZCC_Enum *enode = (ZCC_Enum *)node; ZCC_Enum *enode = (ZCC_Enum *)node;
@ -944,6 +954,7 @@ void (* const TreeNodePrinter[NUM_AST_NODE_TYPES])(FLispString &, ZCC_TreeNode *
PrintVectorInitializer, PrintVectorInitializer,
PrintDeclFlags, PrintDeclFlags,
PrintExprClassCast, PrintExprClassCast,
PrintStaticArrayState,
PrintProperty, PrintProperty,
}; };

View file

@ -2731,7 +2731,7 @@ static bool ReadResponse (HWND hDlg, char *header, SOCKET sock, char *buf, int b
char *lenhead = strstr (header, "content-length: "); char *lenhead = strstr (header, "content-length: ");
if (lenhead != 0) if (lenhead != 0)
{ {
len = strtol (lenhead + 16, NULL, 10); len = (int)strtoll (lenhead + 16, NULL, 10);
if (file != INVALID_HANDLE_VALUE) if (file != INVALID_HANDLE_VALUE)
{ {
ShowWindow (GetDlgItem (hDlg, IDC_BOINGPROGRESS), SW_SHOW); ShowWindow (GetDlgItem (hDlg, IDC_BOINGPROGRESS), SW_SHOW);

View file

@ -1104,12 +1104,12 @@ digits = [0-9];
long FString::ToLong (int base) const long FString::ToLong (int base) const
{ {
return strtol (Chars, NULL, base); return (long)strtoll (Chars, NULL, base);
} }
unsigned long FString::ToULong (int base) const unsigned long FString::ToULong (int base) const
{ {
return strtoul (Chars, NULL, base); return (unsigned long)strtoull (Chars, NULL, base);
} }
double FString::ToDouble () const double FString::ToDouble () const