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Posted to dev@pdfbox.apache.org by "Jose Novacho (Jira)" <ji...@apache.org> on 2020/01/17 09:25:00 UTC
[jira] [Updated] (PDFBOX-4742) Incorrect handling of float Infinity
and NaN
[ https://issues.apache.org/jira/browse/PDFBOX-4742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jose Novacho updated PDFBOX-4742:
---------------------------------
Description:
When creating document, there is an issue if the operand for a command is floating number positive or negative Infinity, or NaN.
The problem is in method {{{color:#172b4d} org.apache.pdfbox.pdmodel.PDPageContentStream#write. {color}}} In case the method {{org.apache.pdfbox.pdmodel.PDPageContentStream#writeOperand(float)}} receives as operand a floating number with value {{Float.POSITIVE_INFINITY}} or {{Float.NEGATIVE_INFINITY}} the result of formating is symbol for infinity: ∞ (unicode 0x221E). The NaN produce unicode symbol 0xFFFD (replacement character). This is then later converted to bytes using the US_ASCII encoding which produces symbol *?* (0x3F) this symbol is then put into the content stream and the resulting PDF is invalid.
Mimimal working example to reproduce this issue.
{code:java}
// code placeholder
public class InfiniteError {
public static void main(String[] args) throws IOException {
PDDocument document = new PDDocument();
PDPage page = new PDPage();
document.addPage(page); PDFont font = PDType1Font.HELVETICA_BOLD; PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.OVERWRITE, false); contentStream.beginText();
contentStream.setFont(font, 12);
contentStream.newLineAtOffset(100, Float.POSITIVE_INFINITY);
contentStream.showText("Hello World");
contentStream.endText(); contentStream.close(); document.save("Hello World.pdf");
document.close(); }
}
{code}
was:
When creating document, there is an issue if the operand for a command is floating number positive or negative Infinity, or NaN.
The problem is in method {{{color:#172b4d} org.apache.pdfbox.pdmodel.PDPageContentStream#write. {color}}} In case the method {{org.apache.pdfbox.pdmodel.PDPageContentStream#writeOperand(float)}} receives as operand a floating number with value Float.POSITIVE_INFINITY or Float.NEGATIVE_INFINITY the result of formating is symbol for infinity: ∞ (unicode 0x221E). The NaN produce unicode symbol 0xFFFD (replacement character). This is then later converted to bytes using the US_ASCII encoding which produces symbol *?* (0x3F) this symbol is then put into the content stream and the resulting PDF is invalid.
Mimimal working example to reproduce this issue.
{code:java}
// code placeholder
public class InfiniteError {
public static void main(String[] args) throws IOException {
PDDocument document = new PDDocument();
PDPage page = new PDPage();
document.addPage(page); PDFont font = PDType1Font.HELVETICA_BOLD; PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.OVERWRITE, false); contentStream.beginText();
contentStream.setFont(font, 12);
contentStream.newLineAtOffset(100, Float.POSITIVE_INFINITY);
contentStream.showText("Hello World");
contentStream.endText(); contentStream.close(); document.save("Hello World.pdf");
document.close(); }
}
{code}
> Incorrect handling of float Infinity and NaN
> --------------------------------------------
>
> Key: PDFBOX-4742
> URL: https://issues.apache.org/jira/browse/PDFBOX-4742
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel, Writing
> Affects Versions: 2.0.8, 2.0.18
> Reporter: Jose Novacho
> Priority: Major
> Attachments: Hello World.pdf
>
>
> When creating document, there is an issue if the operand for a command is floating number positive or negative Infinity, or NaN.
> The problem is in method {{{color:#172b4d} org.apache.pdfbox.pdmodel.PDPageContentStream#write. {color}}} In case the method {{org.apache.pdfbox.pdmodel.PDPageContentStream#writeOperand(float)}} receives as operand a floating number with value {{Float.POSITIVE_INFINITY}} or {{Float.NEGATIVE_INFINITY}} the result of formating is symbol for infinity: ∞ (unicode 0x221E). The NaN produce unicode symbol 0xFFFD (replacement character). This is then later converted to bytes using the US_ASCII encoding which produces symbol *?* (0x3F) this symbol is then put into the content stream and the resulting PDF is invalid.
>
> Mimimal working example to reproduce this issue.
>
> {code:java}
> // code placeholder
> public class InfiniteError {
> public static void main(String[] args) throws IOException {
> PDDocument document = new PDDocument();
> PDPage page = new PDPage();
> document.addPage(page); PDFont font = PDType1Font.HELVETICA_BOLD; PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.OVERWRITE, false); contentStream.beginText();
> contentStream.setFont(font, 12);
> contentStream.newLineAtOffset(100, Float.POSITIVE_INFINITY);
> contentStream.showText("Hello World");
> contentStream.endText(); contentStream.close(); document.save("Hello World.pdf");
> document.close(); }
> }
> {code}
>
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