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Brandon ThomasandClaude Opus 5.5
1449b71a19
Fuzzed inputs drove one check-one process to 2-6 GB (the 16 GB CI runner running two of them was killed every night). Three causes, each with a test: - lopdf (bootstrap inspector) sized PNG predictor rows from /Columns before reading data: /Columns 4294967295 allocated two 4 GiB rows. Vendored lopdf 0.45.0 refuses rows longer than the data (and uses saturating row widths); its load-time stream decoding also gets a 256 MiB limit (it had none). - hayro sized a tiling pattern's cell pixmap from /XStep x scale, bounded only by u16: a step far beyond /BBox allocated 2 GB. The vendored patch keeps the cell within 3000 px a side, lowering the resolution instead. - cos decoded cross-reference streams up to the general 1 GiB limit; they now stop at what 8,388,607 objects' rows can hold (~200 MB at most), and the section is reconstructed (logged) instead. On the nightly's seed (41) the worst captured input fell from 6.2 GB to 6 MB, and a 300 s fuzz run had no process above 300 MB (before: many at 2-5 GB). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
36 lines
1.3 KiB
Rust
36 lines
1.3 KiB
Rust
#[cfg(feature = "font_embedding")]
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#[test]
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fn test_font_data_creation() {
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// Load a sample TTF font file from the test resources
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let font_file = std::fs::read("./assets/fonts/Montserrat-Regular.ttf");
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// Ensure the font file was read successfully
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assert!(font_file.is_ok(), "Failed to read font file");
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// Unwrap the result to get the font file bytes
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let font_file = font_file.unwrap();
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let mut font_data = lopdf::FontData::new(&font_file, "Montserrat-Regular".to_string());
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// Create a new FontData instance
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font_data
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.set_font_bbox((0, -200, 1000, 800))
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.set_italic_angle(10)
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.set_ascent(800)
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.set_descent(-200)
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.set_cap_height(700)
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.set_stem_v(100)
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.set_flags(4)
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.set_encoding("WinAnsiEncoding".to_string());
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// Verify the properties of the FontData instance
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assert_eq!(font_data.font_bbox, (0, -200, 1000, 800));
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assert_eq!(font_data.italic_angle, 10);
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assert_eq!(font_data.ascent, 800);
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assert_eq!(font_data.descent, -200);
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assert_eq!(font_data.cap_height, 700);
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assert_eq!(font_data.stem_v, 100);
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assert_eq!(font_data.flags, 4);
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assert_eq!(font_data.encoding, "WinAnsiEncoding");
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assert!(!font_data.bytes().is_empty(), "Font data should not be empty");
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}
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