[
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}
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); //
incorrect value
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}
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}
> 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); //
> incorrect value
> contentStream.showText("Hello World");
> contentStream.endText();
> contentStream.close();
> document.save("Hello World.pdf");
> document.close();
> }
> }
> {code}
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
