Imager release history. Older releases can be found in Changes.old
+Imager 1.010 - 13 Feb 2019
+============
+
+General changes:
+
+ - added the add_file_magic() class method for adding magic for new
+ file types to Imager's fairly primitive file magic detection.
+
+ - fixed an embarassing documentation typo in Imager::Test.
+
+ - trying to read from a GIF file with no images now sets an error
+ message. Thanks to Peter Sergeant for reporting this.
+ https://rt.cpan.org/Ticket/Display.html?id=128481
+
+ - use undeprecated encoding symbols for FT2. This should fix the
+ build on the badly patched CentOS 7 Freetype 2. Thanks to Slaven
+ Rezic for the report.
+ https://rt.cpan.org/Ticket/Display.html?id=128142
+
+Coverity has come back up read-only, a few more changes:
+
+ - add missing va_end() for bmp.c's write_packed(). CID 185320.
+
+ - similarly for read_packed(). CID 185329.
+
+ - add a NOTREACHED lint comment for pixel_coverage(). Compilers
+ complained about a missing return, Coverity complains about the
+ return. CID 185325.
+
+ - avoid a possible sign extension in imsgi.c. CID 185326.
+
+ - add some FALLTHROUGH lint comments to i_readtga_wiol() where we
+ deliberately fall through switch cases. CID 185328.
+
+ - add assertions in callers to i_new_hatch_low() since Coverity
+ complained about some possible inconsistent NULL checks. CID
+ 185339. I ended up rearranging this function later.
+
+ - remove pointless NULL checks from i_flipxy() and i_img_destroy().
+
+
+Imager 1.009 - 11 Jan 2019
+============
+
+Critical issue:
+
+ - drawing a filled, anti-aliased circle to the left or right of the
+ image (not within the image at all) would cause a buffer overflow.
+ https://rt.cpan.org/Ticket/Display.html?id=128208
+
+General changes:
+
+ - to_paletted() and make_palette() now fail (with an error in
+ errstr()) if invalid quantization parameters are supplied.
+
+ - map() would corrupt a channel if there was a gap in the arrayref of
+ channels. Detected by Coverity. CID 185300.
+
+ - most numeric parameters to the XS implementation now throw an
+ exception if supplied an unoverloaded reference.
+ https://rt.cpan.org/Ticket/Display.html?id=128208
+
+Coverity finally finished a build[1], fixed several of the problems
+found. Coverity went down before I could finish working through them.
+
+High severity:
+
+ - reading a color-mapped TGA file with an id string would cause a
+ double-free if the palette was truncated. CID 185317.
+
+ - mixing scaling to sizes where the accumulator row, the working
+ output row or the working input row didn't fit into the address
+ space could result in memory leaks. This can probably only be
+ reproduced on very wide floating-point sample images. CID 185318.
+
+ - convert an array style function parameter pointer to pointer style
+ to prevent confusing Coverity in the T1 bounding box implementation.
+ CID 185343.
+
+ - Similarly in the FT1 bounding box implementation. CID 185338.
+
+ - Similarly for the i_tt_rasterize() function in the FT1
+ implementation. CID 185303.
+
+ - initialize a pointer to prevent Coverity complaining in polygon
+ drawing (it should always end up being set.) CID 185341.
+
+ - addi style makemap could potentially read one past the end of an
+ array. CID 185337.
+
+ - supplying a numeric hatch of 32 to Imager::Fill->new(hatch => ...)
+ would result in read beyond the end of the built-in hatch array.
+ Negative values (which Coverity didn't complain about) could also
+ cause problems. CID 185331.
+
+ - the Imager::Color set_internal() interal method no longer
+ calls the over-complicated ICL_set_internal() (which is retained
+ only for the old API.) Coverity complained that this leaked, but
+ this could only occur with an invalid (NULL pointer) color object.
+ CID 185323.
+
+ - the underlying implementation of the map() method could read before
+ the beginning on an allocated array if supplied with inconsistent
+ parameters, which Coverity complained about. No Imager code calls
+ that function with inconsistent parameters, but a
+ belt-and-suspenders check was added. CID 185315.
+
+ - Coverity complained a call to i_getcolors(), used by the
+ implementation of the is_bilevel() method could leave the fetched
+ colors uninitialized. Added a return value check. CID 185308.
+
+ - a numeric combining mode of 13 (eg. as a parameter to
+ Imager::Fill->new())could cause an invalid array read in
+ i_get_combine() due to a fencepost error in validating the combine
+ number. CID 185299.
+
+Lower severity (according to Coverity):
+
+ - avoid an unneeded EXTEND() call when the FT1 has_chars()
+ implementation returns 0. CID 185350.
+
+ - avoid accessing a possibly NULL map from MakeMapObject() in a
+ logging call. (GIF) CID 185296.
+
+ - gradgen() allocated the wrong amount of space (always too much) for
+ the color array. CID 185291.
+
+ - avoid dead code in i_tt_glyph_names(). CID 185321.
+
+ - avoid dead code in i_get_anonymous_color_histo(), which is the
+ implementation of getcolorusage(). CID 185327.
+
+ - avoid dead code in i_ft2_glyph_name(), which is the implementation
+ of glyph_names() for FT2. CID 185342.
+
+ - avoid dead code in i_t1_glyph_names(), which is the implementation
+ of glyph_names() for T1. CID 185322.
+
+ - avoid an unneeded EXTEND() call when the FT2 has_chars()
+ implementation returns 0. CID 185292.
+
+ - the unpack code for ICO/CUR file handling could extend 32-bit
+ unsigned values to 64-bit signed. I believe this is harmless. CID
+ 185319.
+
+ - remove an unneeded check when terminating the stream for JPEG
+ writing. CID 185347.
+
+ - skip an unneeded check when freeing the combine temp buffer in the
+ fountain filter. CID 185286.
+
+ - check the combine function pointer consistently rather than the
+ combine code in one place in the fountain filter.
+
+ - error diffusion now validates a custom error diffusion map and reports
+ an error if it's bad. CID 185288.
+
+ - avoid discarding the value of i_io_getc() when scanning numbers in
+ pnm.c. CID 185293.
+
+ - handle failure to clone the log filehandle when cloning the Imager
+ context object on thread creation. CID 185294.
+
+ - fix an unsigned comparison when converting character code to a
+ glyph index with a NULL character map when calculating the glyph
+ for display for FT1. This should be rare. CID 185297.
+
+ - fix a similar bug when calculating whether a glyph is present for
+ has_chars() for FT1. CID 185302.
+
+ - i_img_info() (C API) no longer tries to handle a NULL image object
+ pointer. CID 185298.
+
+ - re-work testing for size_t overflow for circle/random
+ super-sampling for fountain fills. CID 185304.
+
+ - don't check if the unsigned size passed to Imager's malloc wrapper
+ (mymalloc) is negative. Left from when that parameter was signed.
+ CID 185305.
+
+ - make some types larger and add a cast to prevent integer overflows
+ when calculating a palette with median cut for extraordinarily
+ large images. CID 185306.
+
+ - don't check if the unsigned size supplied to
+ im_set_image_file_limits() is negative. CID 185307.
+
+[1] The first two build submissions ended up at the end of a ~400 item
+build queue, and seemed to have been cancelled by Coverity. A build
+submitted on NYE went through in minutes.
+
+Imager 1.008 - 31 Dec 2018
+============
+
+ - moved EXIF handling from Imager::File::JPEG to core Imager
+ This allows file formats that store EXIF data as blobs similarly
+ to JPEG to re-use this code. (such as Imager::File::WEBP)
+
+ - added some more file extensions to image file type mappings
+
+ - added add_type_extensions() class method
+
+ - Imager::Files now links to Imager::Install when discussing
+ appropriate libraries.
+ https://rt.cpan.org/Ticket/Display.html?id=127575
+
+Imager 1.007 - 24 Nov 2018
+============
+
+ - add png_compression_level tag for writing PNG files.
+
+ - avoid flooring a second time in matrix transform interpolation.
+ https://rt.cpan.org/Ticket/Display.html?id=124001
+
+ - produce v2 metadata.
+ Includes change from the ticket and updates to sub-modules.
+ https://rt.cpan.org/Ticket/Display.html?id=127216
+
+ - improve error reporting for the polygon() method
+
+Imager 1.006 - 26 Aug 2017
+============
+
+ - the internal i_errors() function now correctly allocates the stack
+ space needed for its result.
+ https://rt.perl.org/rt3/Ticket/Display.html?id=131938
+
+ - t/100-base/020-color.t now uses Imager::Test's test functions
+ instead of its own.
+ https://rt.cpan.org/Ticket/Display.html?id=111993
+
+ - write_multi() now returns an error result (a false value) if called
+ with a non-(Imager image object). Previously it would typically
+ crash.
+ https://rt.cpan.org/Ticket/Display.html?id=117878
+
+ - improve the documentation of the jpegquality parameter when
+ writing JPEG files.
+
+ - add code to mitigate CVE-2016-1238, Imager will no longer search the
+ default current directory entry in @INC when searching for file
+ format support modules.
+
+Imager 1.005 - 16 Apr 2016
+============
+
+It's now been ten years since I switched to the new Changes file in
+release 0.55.
+
+ - revert the ivdformat probes, they don't work as is and trying to
+ fix them is too much work for now.
+
+Imager 1.004_004 - 15 Apr 2016
+================
+
+ - test that the ivdformat from Config is correct and look for a valid
+ one if it isn't.
+ For the strange Win32 failures.
+
+ - fix a copy and paste error in pod in samples/samp-form.cgi
+
+Imager 1.004_003 - 23 Mar 2016
+================
+
+ - add some extra error reporting to the I/O layers tests, this might
+ help catch a failure seen on Win32.
+ http://cpantesters.org/cpan/report/99781689-6bf5-1014-897a-75cb4eee1325
+
+Imager 1.004_002 - 20 Mar 2016
+================
+
+ - don't use the seek() method on opened() handles in
+ t/200-file/400-basic.t. In older versions of perl such handles are
+ only IO::Handle objects, not IO::File, and don't have a seek()
+ method.
+
+Imager 1.004_001 - 16 Mar 2016 (Birthday release - but not my birthday)
+================
+
- re-work the t/200-file/400-basic.t to correctly handle failures
It's custom ok() function didn't have a prototype and didn't use scalar().
This caused ok() to use the note instead of the value being tested when
the method called returned an empty list. For an example of the problem
caused see: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=812093
- - remove some noise from when Imager tried to work with buggy
- versions of giflib.
+ - remove some noise from when Imager tried to work with bugs in old
+ versions of giflib. I can't do much about the new bugs.
- the new autolevels filter (Imager 0.99) used an integer for the
sample scaling factor which caused the top output level to be too
- the nearest_color filter (undocumented until I find a use for it)
leaked both temporaries passed to the API and internal buffers
+ - the internal process of upgrading a paletted image to a direct
+ color image would leak a context object reference count.
+
+ - a write failure when writing to a GIF file could leak memory.
+
+ - failing to write to a 1-bit/pixel ICO image could leak memory.
+
+ - Imager no longer deliberately leaks the context object from the
+ initial thread. This was done to ensure there was always a context
+ object available, but the code that needed that now handles the
+ lack correctly,
+
- fixed some uninitialized memory usage detected by valgrind:
- rotate()/i_rotate_exact()/i_rotate_exact_bg()/i_matrix_transform()/
- a future version of Imager may allow an image to be read without
translation, for example a TIFF file that contains measurements
from an instrument. Currently Imager transforms the samples into
- the range 0.0 ... 1.0 which may means the user has to translates
+ the range 0.0 ... 1.0 which may means the user has to translate
the value back.
An untranslated image would be unusable as image data, so
- avoid static variables when capturing IPTC data from JPEG files
- - match Imager::Font;:T1's error message translations to those from
+ - match Imager::Font::T1's error message translations to those from
later versions of T1Lib.
- for libtiff versions that support extended warning handlers (3.8.0
projects / imager.git / blobdiff