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replace sprintf with more secure snprintf #32

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replace sprintf with more secure snprintf #32

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121 changes: 61 additions & 60 deletions tools/MSXtk/src/exporter.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
#include <iostream>
#include <fstream>
#include <ctime>
#include <stdio.h>
// MSXi
#include "MSXimg.h"
#include "types.h"
Expand Down Expand Up @@ -228,7 +229,7 @@ class ExporterText : public ExporterInterface
std::time_t result = std::time(nullptr);
char* ltime = std::asctime(std::localtime(&result));
ltime[strlen(ltime) - 1] = 0; // remove final '\n'
sprintf(strData, "Data generated using MSXimg %s on %s", MSXi_VERSION, ltime);
snprintf(strData, BUFFER_SIZE, "Data generated using MSXimg %s on %s", MSXi_VERSION, ltime);
WriteCommentLine(strData);

// Add author & license
Expand Down Expand Up @@ -336,7 +337,7 @@ class ExporterC: public ExporterText
{
if (Param->bStartAddr)
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"\n"
"// %s\n"
"%s =\n"
Expand All @@ -345,7 +346,7 @@ class ExporterC: public ExporterText
}
else if (Param->bDefine)
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"\n"
"#ifndef D_%s\n"
"\t#define D_%s\n"
Expand All @@ -357,7 +358,7 @@ class ExporterC: public ExporterText
}
else
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"\n"
"// %s\n"
"%s =\n"
Expand All @@ -369,58 +370,58 @@ class ExporterC: public ExporterText

virtual void WriteSpriteHeader(i32 number)
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"// Sprite[%i] (offset:%i)\n", number, TotalBytes);
outData += strData;
}

virtual void WriteCommentLine(std::string comment)
{
sprintf(strData, "// %s\n", comment.c_str());
snprintf(strData, BUFFER_SIZE, "// %s\n", comment.c_str());
outData += strData;
}

virtual void Write4BytesLine(u8 a, u8 b, u8 c, u8 d, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s, %s, %s, %s, // %s\n", GetNumberFormat(), GetNumberFormat(), GetNumberFormat(), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a, b, c, d);
snprintf(strData, BUFFER_SIZE, strFormat, a, b, c, d);
outData += strData;
TotalBytes += 4;
}

virtual void Write2BytesLine(u8 a, u8 b, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s, %s, // %s\n", GetNumberFormat(), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a, b);
snprintf(strData, BUFFER_SIZE, strFormat, a, b);
outData += strData;
TotalBytes += 2;
}

virtual void Write1ByteLine(u8 a, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s, // %s\n", GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a);
snprintf(strData, BUFFER_SIZE, strFormat, a);
outData += strData;
TotalBytes += 1;
}

virtual void Write1WordLine(u16 a, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s, // %s\n", GetNumberFormat(2), comment.c_str());
sprintf(strData, strFormat, a);
snprintf(strData, BUFFER_SIZE, strFormat, a);
outData += strData;
TotalBytes += 2;
}

virtual void Write2WordsLine(u16 a, u16 b, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s, %s, // %s\n", GetNumberFormat(2), GetNumberFormat(2), comment.c_str());
sprintf(strData, strFormat, a, b);
snprintf(strData, BUFFER_SIZE, strFormat, a, b);
outData += strData;
TotalBytes += 4;
}
Expand All @@ -432,17 +433,17 @@ class ExporterC: public ExporterText

virtual void Write1ByteData(u8 data)
{
sprintf(strFormat, "%s, ", GetNumberFormat());
sprintf(strData, strFormat, data);
snprintf(strFormat, BUFFER_SIZE, "%s, ", GetNumberFormat());
snprintf(strData, BUFFER_SIZE, strFormat, data);
outData += strData;
TotalBytes += 1;
}

virtual void Write8BitsData(u8 data)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"%s, /* %%c%%c%%c%%c%%c%%c%%c%%c */ ", GetNumberFormat());
sprintf(strData, strFormat, data,
snprintf(strData, BUFFER_SIZE, strFormat, data,
data & 0x80 ? '#' : '.',
data & 0x40 ? '#' : '.',
data & 0x20 ? '#' : '.',
Expand All @@ -465,7 +466,7 @@ class ExporterC: public ExporterText
outData += "};\n";
if (comment != "")
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"// %s\n", comment.c_str());
outData += strData;
}
Expand All @@ -483,7 +484,7 @@ class ExporterASM: public ExporterText

virtual void WriteTableBegin(TableFormat format, std::string name, std::string comment)
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"\n"
"; %s\n"
"%s:\n",
Expand All @@ -493,58 +494,58 @@ class ExporterASM: public ExporterText

virtual void WriteSpriteHeader(i32 number)
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"; Sprite[%i] (offset:%i)\n", number, TotalBytes);
outData += strData;
}

virtual void WriteCommentLine(std::string comment)
{
sprintf(strData, "; %s\n", comment.c_str());
snprintf(strData, BUFFER_SIZE, "; %s\n", comment.c_str());
outData += strData;
}

virtual void Write4BytesLine(u8 a, u8 b, u8 c, u8 d, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s %s, %s, %s, %s, ; %s\n", GetDataFormat(1), GetNumberFormat(), GetNumberFormat(), GetNumberFormat(), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a, b, c, d);
snprintf(strData, BUFFER_SIZE, strFormat, a, b, c, d);
outData += strData;
TotalBytes += 4;
}

virtual void Write2BytesLine(u8 a, u8 b, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s %s, %s, ; %s\n", GetDataFormat(1), GetNumberFormat(), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a, b);
snprintf(strData, BUFFER_SIZE, strFormat, a, b);
outData += strData;
TotalBytes += 2;
}

virtual void Write1ByteLine(u8 a, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s %s, ; %s\n", GetDataFormat(1), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a);
snprintf(strData, BUFFER_SIZE, strFormat, a);
outData += strData;
TotalBytes += 1;
}

virtual void Write1WordLine(u16 a, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s %s, ; %s\n", GetDataFormat(2), GetNumberFormat(2), comment.c_str());
sprintf(strData, strFormat, a);
snprintf(strData, BUFFER_SIZE, strFormat, a);
outData += strData;
TotalBytes += 2;
}

virtual void Write2WordsLine(u16 a, u16 b, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"\t%s %s, %s, ; %s\n", GetDataFormat(2), GetNumberFormat(), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a, b);
snprintf(strData, BUFFER_SIZE, strFormat, a, b);
outData += strData;
TotalBytes += 4;
}
Expand All @@ -558,16 +559,16 @@ class ExporterASM: public ExporterText

virtual void Write1ByteData(u8 data)
{
sprintf(strFormat, "%s, ", GetNumberFormat());
sprintf(strData, strFormat, data);
snprintf(strFormat, BUFFER_SIZE, "%s, ", GetNumberFormat());
snprintf(strData, BUFFER_SIZE, strFormat, data);
outData += strData;
TotalBytes += 1;
}

virtual void Write8BitsData(u8 data)
{
sprintf(strFormat, "%s, ", GetNumberFormat());
sprintf(strData, strFormat, data);
snprintf(strFormat, BUFFER_SIZE, "%s, ", GetNumberFormat());
snprintf(strData, BUFFER_SIZE, strFormat, data);
outData += strData;
TotalBytes += 1;
}
Expand All @@ -581,7 +582,7 @@ class ExporterASM: public ExporterText
{
if (comment != "")
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"; %s\n", comment.c_str());
outData += strData;
}
Expand All @@ -604,7 +605,7 @@ class ExporterBASIC : public ExporterText

virtual void WriteTableBegin(TableFormat format, std::string name, std::string comment)
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"\n"
"%i '%s:%s\n",
Line++, name.c_str(), comment.c_str());
Expand All @@ -613,76 +614,76 @@ class ExporterBASIC : public ExporterText

virtual void WriteSpriteHeader(i32 number)
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"%i 'Sprite[%i] (offset:%i)\n", Line++, number, TotalBytes);
outData += strData;
}

virtual void WriteCommentLine(std::string comment)
{
sprintf(strData, "%i '%s\n", Line++, comment.c_str());
snprintf(strData, BUFFER_SIZE, "%i '%s\n", Line++, comment.c_str());
outData += strData;
}

virtual void Write4BytesLine(u8 a, u8 b, u8 c, u8 d, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"%i DATA %s,%s,%s,%s '%s\n", Line++, GetNumberFormat(), GetNumberFormat(), GetNumberFormat(), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a, b, c, d);
snprintf(strData, BUFFER_SIZE, strFormat, a, b, c, d);
outData += strData;
TotalBytes += 4;
}

virtual void Write2BytesLine(u8 a, u8 b, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"%i DATA %s,%s '%s\n", Line++, GetNumberFormat(), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a, b);
snprintf(strData, BUFFER_SIZE, strFormat, a, b);
outData += strData;
TotalBytes += 2;
}

virtual void Write1ByteLine(u8 a, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"%i DATA %s '%s\n", Line++, GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a);
snprintf(strData, BUFFER_SIZE, strFormat, a);
outData += strData;
TotalBytes += 1;
}

virtual void Write1WordLine(u16 a, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"%i DATA %s '%s\n", Line++, GetNumberFormat(2), comment.c_str());
sprintf(strData, strFormat, a);
snprintf(strData, BUFFER_SIZE, strFormat, a);
outData += strData;
TotalBytes += 2;
}

virtual void Write2WordsLine(u16 a, u16 b, std::string comment)
{
sprintf(strFormat,
snprintf(strFormat, BUFFER_SIZE,
"%i DATA %s,%s '%s\n", Line++, GetNumberFormat(), GetNumberFormat(), comment.c_str());
sprintf(strData, strFormat, a, b);
snprintf(strData, BUFFER_SIZE, strFormat, a, b);
outData += strData;
TotalBytes += 4;
}

virtual void WriteLineBegin()
{
sprintf(strData, "%i DATA ", Line++);
snprintf(strData, BUFFER_SIZE, "%i DATA ", Line++);
outData += strData;
bLineStart = TRUE;
}

virtual void Write1ByteData(u8 data)
{
if (bLineStart)
sprintf(strFormat, "%s", GetNumberFormat());
snprintf(strFormat, BUFFER_SIZE, "%s", GetNumberFormat());
else
sprintf(strFormat, ",%s", GetNumberFormat());
sprintf(strData, strFormat, data);
snprintf(strFormat, BUFFER_SIZE, ",%s", GetNumberFormat());
snprintf(strData, BUFFER_SIZE, strFormat, data);
outData += strData;
TotalBytes += 1;
bLineStart = FALSE;
Expand All @@ -691,10 +692,10 @@ class ExporterBASIC : public ExporterText
virtual void Write8BitsData(u8 data)
{
if (bLineStart)
sprintf(strFormat, "%s", GetNumberFormat());
snprintf(strFormat, BUFFER_SIZE, "%s", GetNumberFormat());
else
sprintf(strFormat, ",%s", GetNumberFormat());
sprintf(strData, strFormat, data);
snprintf(strFormat, BUFFER_SIZE, ",%s", GetNumberFormat());
snprintf(strData, BUFFER_SIZE, strFormat, data);
outData += strData;
TotalBytes += 1;
bLineStart = FALSE;
Expand All @@ -710,7 +711,7 @@ class ExporterBASIC : public ExporterText
{
if (comment != "")
{
sprintf(strData,
snprintf(strData, BUFFER_SIZE,
"' %s\n", comment.c_str());
outData += strData;
}
Expand Down
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