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Correctly catching errors for corrupted JPEG

This commit is contained in:
Matteo Paonessa 2023-06-11 18:35:24 +02:00
parent b88a818262
commit ea99785e53
1 changed files with 20 additions and 18 deletions
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38
src/jpeg.rs
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@ -6,6 +6,7 @@ use std::{fs, ptr};
use std::fs::File;
use std::io::Write;
use std::{io, mem};
use std::panic::catch_unwind;
use libc::free;
use crate::resize::resize;
@ -39,13 +40,16 @@ pub fn compress_to_memory(mut in_file: Vec<u8>, parameters: &CSParameters) -> Re
}
unsafe {
let compression_buffer = if parameters.optimize {
lossless(in_file, parameters)?
} else {
lossy(in_file, parameters)?
};
Ok(compression_buffer)
return match catch_unwind(|| {
if parameters.optimize {
lossless(in_file, parameters)
} else {
lossy(in_file, parameters)
}
}) {
Ok(cb) => cb,
Err(_) => Err(io::Error::new(io::ErrorKind::Other, format!("Internal JPEG error: {}", JPEG_ERROR)))
}
}
}
@ -61,9 +65,11 @@ unsafe fn lossless(
src_info.common.err = jpeg_std_error(&mut src_err);
(*src_info.common.err).error_exit = Option::Some(error_handler);
(*src_info.common.err).output_message = Option::Some(error_message_handler);
dst_info.common.err = jpeg_std_error(&mut dst_err);
(*dst_info.common.err).error_exit = Option::Some(error_handler);
(*dst_info.common.err).output_message = Option::Some(error_message_handler);
jpeg_create_decompress(&mut src_info);
jpeg_create_compress(&mut dst_info);
@ -79,11 +85,6 @@ unsafe fn lossless(
jpeg_read_header(&mut src_info, true as boolean);
if JPEG_ERROR == 11 {
jpeg_destroy_decompress(&mut src_info);
jpeg_create_compress(&mut dst_info);
return Err(io::Error::new(io::ErrorKind::Other, format!("Decompress internal error: {}", JPEG_ERROR)));
}
let src_coef_arrays = jpeg_read_coefficients(&mut src_info);
jpeg_copy_critical_parameters(&src_info, &mut dst_info);
let dst_coef_arrays = src_coef_arrays;
@ -133,8 +134,11 @@ unsafe fn lossy(in_file: Vec<u8>, parameters: &CSParameters) -> Result<Vec<u8>,
src_info.common.err = jpeg_std_error(&mut src_err);
(*src_info.common.err).error_exit = Option::Some(error_handler);
(*src_info.common.err).output_message = Option::Some(error_message_handler);
dst_info.common.err = jpeg_std_error(&mut dst_err);
(*dst_info.common.err).error_exit = Option::Some(error_handler);
(*dst_info.common.err).output_message = Option::Some(error_message_handler);
jpeg_create_decompress(&mut src_info);
jpeg_create_compress(&mut dst_info);
@ -150,12 +154,6 @@ unsafe fn lossy(in_file: Vec<u8>, parameters: &CSParameters) -> Result<Vec<u8>,
jpeg_read_header(&mut src_info, true as boolean);
if JPEG_ERROR == 11 {
jpeg_destroy_decompress(&mut src_info);
jpeg_create_compress(&mut dst_info);
return Err(io::Error::new(io::ErrorKind::Other, format!("Decompress internal error: {}", JPEG_ERROR)));
}
let width = src_info.image_width;
let height = src_info.image_height;
let color_space = src_info.jpeg_color_space;
@ -279,4 +277,8 @@ fn save_metadata(
unsafe extern "C" fn error_handler(cinfo: &mut jpeg_common_struct) {
JPEG_ERROR = (*cinfo.err).msg_code;
panic!("Internal JPEG error: {}", JPEG_ERROR);
}
unsafe extern "C" fn error_message_handler(_cinfo: &mut jpeg_common_struct) {
}