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* Fix for PDF documentation generationgs10.0.0Jamie Lemon2022-09-262-825/+33654
| | | | | | Updates doc/src/conf.py to point to the toc file to ensure that everything is built for the PDF. <log></log>
* Update Windows installer to play nicer with new docsghostpdl-10.0.0Chris Liddell2022-09-211-4/+4
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* Dates, strings etc for 10.0.0 releaseChris Liddell2022-09-2118-68/+68
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* Update docs for 10.0.0 releaseChris Liddell2022-09-201-167/+1108
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* Add libtiff back into third party libs listChris Liddell2022-09-201-2/+6
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* This is the squash of the sphinx-docs branchJamie Lemon2022-09-20102-46379/+28650
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sphinx docs exemplar Adds a source folder with a README to redo the docs with Sphinx. More Sphinx updates - added main skeleton htm pages gitignore also removes .buildinfo & .doctrees <log></log> More Sphinx docs work Sphinx updates for API page Sphinx docs: some tidy up start of Use.htm Sphinx docs: mostly more on Use.htm Sphinx docs: Completes Use.rst, starts some other pages Sphinx docs: Completes Devices.rst Sphinx docs: Start of VectorDevices.rst Sphinx docs: Completes VectorDevices.rst Sphinx docs: Start of Drivers.rst Sphinx docs: Completes Drivers.rst Sphinx docs: Corrects some links in API.rst Sphinx docs: Completes Make.rst section Sphinx docs: Completes Install.rst section Sphinx docs: Completes Lib.rst and adds footer to all rst files Sphinx docs: Completes C-style.rst, changes description for "iff" Sphinx docs: Completes P-style.rst Sphinx docs: Starts Language.rst and tweaks some other rst files Sphinx docs: Completes Language.rst and adds "title" directive to all rst files Sphinx docs: completes Unix-lpr.rst, Fonts.rst, PS-files.rst, News.rst, third-party.rst Also updates the title header layout for all the rst files Sphinx docs: Deprecated.rst -> UnsupportedDevices.rst Sphinx docs: Completes Source.rst Sphinx docs: Multiple updates across many RST files Sphinx docs: Completes Develop.rst Sphinx docs: Fixes build errors and warnings Sphinx docs: Some tidy up and start of UnsupportedDevices.rst Sphinx docs: More updates to UnsupportedDevices.rst Sphinx docs: More tidy up, adds the readthedocs.yaml <log></log> Sphinx docs: tidy up language-bindings favicon reference <log></log> Sphinx docs: more conf tidy up, fixes a link in Devices.rst <log></log> Sphinx docs: Updates News.rst to include News.htm Updates News.htm to include just the body HTML ready for insertion into the RST docs or to view standalone. Updates README to add advice on editing & publishing docs <log></log> Sphinx docs: Removes old .htm files and any other seemingly redundant files in "doc" Sphinx docs: Removes the built output from Sphinx as it is not required <log></log> Sphinx docs: Updates devices keywords to be styled with :title: tag - This wraps these keywords with <cite> at the HTML level - Also added a requirements.txt file for the .readthedocs.yaml to use Sphinx docs: Includes index.htm with prospective readthedocs website redirect <log></log> Sphinx docs: Removes README.md and moves info over into HowToBuildTheDocs.txt Also tidies up a header underline which was too short in UnsupportedDevices.rst <log></log> Sphinx docs: Removes Release.rst Sphinx docs: Devices.rst - Add bbox notes from earlier 10.0.0 branch commit See: - add a note about precision of bbox device commit 7f2719bff1d50e151918cf505fa695edc65e936f Also indents some properties which were children of a dictionary to make it more understandable. <log></log> Sphinx docs: Updates News.htm to reflect recent changes <log></log> Sphinx docs: Adds the generated Ghostscript documentation PDF Generated via sphinx-build <log></log> Sphinx docs: Removes redundant link from Install.htm <log></log> Sphinx docs: Adds standalone TOC, start of Language Bindings docs GhostAPI completed here for C sharp. <log></log> Sphinx docs: Adds GhostNET documentation <log></log> Sphinx docs: Completes the C# documentation <log></log> Sphinx docs: Completes Java Language Bindings introduction <log></log> Sphinx docs: Completes Java Language Bindings docs Also fixes a syntax error in API.rst Sphinx docs: Completes the Python Language Bindings docs <log></log> Sphinx docs: Republishes PDF version of docs Now includes Language Bindings <log><log> Sphinx docs: Move language binding "Building GS" section to reference sections in Make.rst <log></log> Sphinx docs: Fixes bullet point syntax, and some other tweaks. Also includes: Putting "build" before "install" in the left nav Some small syntax tweaks and improvments. Sphinx docs: Updates reference: IRC channel -> Discord channel Sphinx docs: Updates Python Language Bindings with links to C docs and other fixes <log></log> Sphinx docs: Completes tweaks for Python section and publishes amended PDF <log></log> Sphinx docs: Final tweak to Python section <log></log>
* Tweak to ignore whitespace issues in new docs sourcesChris Liddell2022-09-201-1/+5
| | | | These rules should be updated as understanding dawns
* Correct gpdl PDF language detection.Robin Watts2022-09-201-3/+3
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* Set the "is_resource" key in Type 1 gs_font objectsChris Liddell2022-09-191-1/+16
| | | | | | | | | This influences how pdfwrite works out whether or not to embed a given font. With that flag not set, PDF base 14 fonts were getting embedded when, with the version of PDF pdfwrite defaults to creating, they should not be. Stems from Bug 705872.
* Bug 705260 continued: Fix SEGVs seen in cluster testing.Robin Watts2022-09-191-2/+2
| | | | | | | Don't dereference something that's not a pointer. I have no idea how this passed testing, or why it has only started cauing crashes recently, but clearly if I'm passing values that are -1, 0 or 1, use them as is, don't dereference them.
* gpdl: Ensure that -o sets -dNOPAUSE for postscript jobs.Robin Watts2022-09-191-3/+5
| | | | | Postscript jobs require NOPAUSE in the dict, not just in the main instance.
* Don't use pdfi_type_of() on things not pdf_objsChris Liddell2022-09-191-2/+2
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* GhostPDF - fix Page count calculationKen Sharp2022-09-191-1/+1
| | | | | | | | | | | | | Commit 1bdc4a87930b1180cebaa73ea8a9cc96c50d34e9 added a check on the count of the number of pages (to try and avoid timeouts with OSS-fuzz and huge declared page counts). Unfortunately the wrong dictionary was queried for the count of intermediate page tree nodes leading to a wildly incorrect number of pages. This led to a load of errors being thrown, though all the pages were rendered correctly. Correct that here....
* GhostPDF + GS - Centre contents on media when using PDFFitPageKen Sharp2022-09-191-9/+27
| | | | | | | | | | Bug #705861 "Regression: image not centered when forcing A4 output" The old PDF interpreter apparently centres the content on the scaled page when using PDFFitPage, whereas we were maintaining the origin at 0,0. Add code to duplicate this.
* Tweak @file quote handling.Robin Watts2022-09-191-12/+31
| | | | | | | | | | | | | | | | | | | | | | The change for bug 703694 in commit 0f38f27a7b3a1eb meant that we no longer accepted -sFoo="Bar Baz" in an @file, and instead read that as: -sFoo="Bar This seems counterintuitive. Here we tweak the code so that " is accepted to mean the start of a quotation after an = sign too. We also tweak the handling of '\' so that special case handling only happens in @ files, not from the command line. And we allow '\"' to mean literal '"'. '\' at the end of the line remains meaning "continue parsing past the newline". All other cases of '\' continue to mean literal '\'.
* GhostPDF - add a missing prototypeKen Sharp2022-09-081-0/+1
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* GhostPDF - type check Image dictionary contentsKen Sharp2022-09-081-1/+53
| | | | | | | | | | | | | | | | | Bug #705784 "NULL pointer dereference in pdf/pdf_image.c:883 pdfi_data_image_params" The function picking out the required image information wasn't type checking some elements, which was comparatively safe (but still wrong) before the change to handling some objects as low integer values rather than pointers to objects. That change causes us to try and dereference pointers to low memory and causes a crash. We should type check all the image dictionary contents before use, this commit just adds that. If we find an optional entry that isn't a valid type we raise a warning but continue unless PDFSTOPONWARNING is set. We ignore the invalid value which may still cause further errors or incorrect rendering though.
* GhostPDF - early sanity check on Pages tree root node /CountKen Sharp2022-09-082-2/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A number of OSS-fuzz files timeout due to having an excessively large /Count (eg 213804087) in the root node of the Pages tree. This doesn't cause us any real problems, except that it takes a long time to fail to render that many pages. On the other hand, validating the entire pages tree for a large file with many nodes could take a reasonable amount of time. Not huge but it would mean a performance hit on sensible files just to avoid this penalty on broken files. As a compromise; this commit checks the root node /Kids array, if it has sufficient entries to match the /Count then we assume its a flat tree and the Count is correct. If it has fewer then we assume it's a tree and we check each of the entries in the /Kids array. If its a leaf node then we add 1 to the running count. If it is an intermediate node then we add the /Count of the node to the running count. If the one-level check matches the root node /Count then we assume the Count is correct. If it does not, then we assume that the count of the first level is correct. We could, if desired, validate the entire tree instead at this point but I don't think it's worth it. If the tree is really broken then the file is going to fail. This commit prevents the timeout and if the corruption is limited to the Count of the root node then it will recover from that.
* GhostPDF - another otional content flags depth checkKen Sharp2022-09-081-1/+1
| | | | | | | Bug #705853 "buffer overflow in /base/gsmchunk.c:1110 chunk_free_object (exploitable)" The commit 4fdfca8cbadb1ab15005a6cfde53a59d1f642a7e updated one case of this, in pdfi_oc_levels_set, but missed the one here. Fix that too.
* Dates etc for 10.0.0 RC2ghostpdl-10.0.0rc2Chris Liddell2022-09-0748-49/+49
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* Bug 705653: Fix dashing of multi-segment lines with round joins.Robin Watts2022-09-071-1/+3
| | | | | | Don't insert a round line join if the line segments are colinear and not-reversed. Otherwise the large round join can show past the end of dash segments.
* Bug 705702 continued: Extend fix to other tiling types too.Robin Watts2022-09-071-5/+6
| | | | | | The previous fix was correct, but left the potential problem open for other tiling types. Move/refine the test a bit to ensure it works for all types.
* oss-fuzz 51045: Bounds check available points in Ins_ISECT()Chris Liddell2022-09-071-1/+2
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* oss-fuzz 51011: Bounds check CharString opstack for SEAC opcode.Chris Liddell2022-09-071-15/+20
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* oss-fuzz 51005: better handle errors retrieving CFF glyph indexChris Liddell2022-09-071-2/+7
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* Bug 705844: Fix depth checking for optional content flags.Chris Liddell2022-09-071-1/+1
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* GhostPDF + GS - fix PDFFitPage with square MediaBoxKen Sharp2022-09-061-0/+1
| | | | | | | | | | | Bug #705849 "New PDF interpreter errors out with PDFFitPage" If the input PDF file had square media then we would correctly decide we did not need to rotate the media for a better fit, but we left the values we would normally use to calculate if rotation was required on the operand stack, resulting in an error. Pop the unused values.
* GhostPDF - check for 0 Size entries in XRefStm /Index arrayKen Sharp2022-09-061-5/+8
| | | | | | | | | | | | | | | | | | Bug #705843 " heap-buffer-overflow in pdf/pdf_xref.c:114 read_xref_stream_entries (exploitable)" The /Index array in the XRefStm holds pairs of values, the first is the first object number in a subsection, the second is the number of entries in a subsection. We were doing loads of checks on the validity of these numbers, but forgot to check that the size was at least 1. Because we later use start + size - 1 we could then end up with a ridiculously large index, because these are unsigned values. If we get a size of 0, just ignore the subsection. While making changes, renamed 'end' to 'size' because its a better descriptive name.
* GhostPDF - limit the nesting of arrays and dictionariesKen Sharp2022-09-063-6/+33
| | | | | | | | | | | | OSS-fuzz 50138 If a file was sufficiently insanely broken to nest arrays or dictionaries to a sufficient depth, we could exhaust the C execution stack when trying to free the top level one. This limits the nesting to a compile-time level (currently 100). If we exceed that we simply stop nesting the objects but store an error for reporting on exit.
* GhostPDF - performance improvement with large CFF CIDFontsKen Sharp2022-09-062-1/+55
| | | | | | | | | See bug 705534. The interpreter spends an enormous amount of time checking to see if a dictionary contains a key, or an equally large amount of time sorting the dictionary after adding a key. We know that these keys are unique in the dictionary, so this is a waste of time, lets not do that.
* GhostPDF - yet more meddling with /ParentKen Sharp2022-09-061-2/+50
| | | | | | | | | | | | OSS-fuzz 51011 The annot and optional content code all use the /Parent dictionary, but doesn't have any circular reference protection. This duplicates the protection we added to Widget annotations. I intend to supercede this commit with a more general one which deals in a more common fashion with access to the /Parent, I just don't want to lose this commit.
* graphics library - bounds check type 2 instruction pointerKen Sharp2022-09-061-2/+13
| | | | | | | | | | | | | | | | | This is a speculative fix for OSS-fuzz 50448. Despite the fact that we cannot reproduce this, it looks like the problem must stem from reading off the end of the input buffer. This is possible because we do not check the instruction pointer, but just keep on incrementing it until we get an endchar. It looks like we should originally have been doing this, because the ip_state_t structure, which is used to store the state on a stack when we call subroutines, has an 'ip_end' pointer. But we were never using that..... So add code to set and use it, and add a local variable to hold the pointer to the end of the input buffer, and check cip against that.
* Coverity 380740: Fix signed/unsigned confusionChris Liddell2022-09-061-1/+1
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* Bug 705768: Avoid extreme FPs causing out of range ints.Robin Watts2022-09-061-3/+3
| | | | | | | | | | If bbh is large enough, floor(bbh+0.5) can be MIN_INT. This gives a device height of MIN_INT, which is copied to band_height, and then trips the band calculations to result in accessing beyond the end of the band list. Head all this off, by spotting inst.size.x or y being < 0.
* Initialise a couple of important values in newly created stream objectsChris Liddell2022-09-061-0/+2
| | | | | | | | | The "modes" and "end_status" values were being left unset by s_init() which *may* end up causing problems if the stream finalize method gets called before those values are set by something else. This stems from oss-fuzz #50898 which we cannot reproduce, but Ken spotted the potential problem reading the code, so we're putting in a speculative fix.
* GhostPDF - check for circular references when checking Parent resourcesKen Sharp2022-09-061-1/+15
| | | | | | | | | | | OSS-fuzz 50857 The file is corrupted in a way which causes the Parent of a Widget annotation to be an indirect reference to an indirect reference, which points back to the Widget annotation. Add loop detection to the Widget Parent dereferencing/checking to avoid this.
* oss-fuzz 50893: xpswrite: Fix order of operations freeing TIFF objectChris Liddell2022-09-021-13/+10
| | | | | | | | | We can't free our libtiff "client data) until we've completed writing the TIFF (which also frees the libtiff context), but having completed writing the TIFF, we can no longer access our client data through the libtiff context. We have to retrieve a pointer to our client data, complete the TIFF writing process, then free our client data using the pointer we previously retrieved.
* oss-fuzz 50847: Bounds check points indices in ↵Chris Liddell2022-09-021-2/+9
| | | | ttfOutliner__BuildGlyphOutlineAux()
* oss-fuzz 50834: Add code buffer bounds check in Ins_NPUSHW()Chris Liddell2022-09-021-1/+3
| | | | | The wrinkle is that for each arg pushed, it reads two values from the code buffer.
* Make jbig2 and jpx decoders mandatoryChris Liddell2022-09-021-0/+8
| | | | When PDF is included.
* Documentation - Add a note about precision of the bbox deviceKen Sharp2022-09-021-0/+8
| | | | Bug #705830 "imprecise bbox of PDF"
* Bug 705831: pdfwrite drop not required TTF tables.Chris Liddell2022-09-021-4/+6
| | | | | | | | | | | Unlike the Postscript code, pdfi does not have a create a Type 42 font from a TTF stream, it can just use the TTF stream unchanged. This means pdfi does not "filter out" TTF tables not required for Type 42, and pdfwrite would then write out (almost) all the tables presented to it, meaning the output file size could increase significantly. This just has pdfwrite filter out TTF tables not used in TTFs embedded in PDF files.
* Fix FONTPATH fontmap functionalityChris Liddell2022-09-021-2/+19
| | | | | | | | | | | | Firstly, pdfi is strict in enforcing that dictionary keys must be names, so when the mapping is a path/file we need to convert that string to a name so we can store it in the substitute fonts dictionary. Secondly, an error storing the mapping in the substitute fonts dictionary should not be propagated - we should continue to use the mapping even if we can't store it for later reuse. Stems from (but not fixes) Bug 705831
* GhostPDF + GS - remove some debugKen Sharp2022-09-021-2/+0
| | | | Accidentally left two debugging lines in the previous commit.
* GhostPDF + GS - small optimisation and avoid a circular referenceKen Sharp2022-09-021-15/+22
| | | | | | | | | | | | | | | | Bug #705834 "stack overflow in psi/idict.c:160 dict_alloc (exploitable)" This is caused by subsequent calls to .PDFInfo causing the Info dictionary to end up with circular references as we replace indirect references with PDF objects. I'd been meaning for some time to revisit the PostScript code and avoid calling .PDFInfo multiple times just for performance reasons (we have to convert the PDF dictionary to a PostScript dictionary every time). This commit uses the stored PostScript dictionary 'PDFInfo' instead of calling .PDFInfo which avoids the circular reference and is slightly more efficient.
* Coverity ID #380567Ken Sharp2022-09-021-5/+7
| | | | | | | | Turns out there are multiple paths to the error label, many of which occur before the 'info' enumerator is created. Fix this by initialising the pointer to NULL and then testing to see if it has been created before calling end_image. If it hasn't then we didn't call begin_image (or it failed) and so should not call end_image.
* Coverity ID #380568Ken Sharp2022-09-021-5/+6
| | | | | | The cleanup code was misplaced, because the enumerator finalze resets the 'dev' member to NULL before we use it. Move the 'tif' cleanup earlier so we can use the dev member before it is set to NULL.
* Graphics library and xpswrite - clean up properly on errorKen Sharp2022-09-022-1/+12
| | | | | | | | | | | | | | | | | | OSS-fuzz 50779 The gdevp14 device was not calling end_image if an error occurred while sending an image to the output device. The xpswrite device only cleans up its TIFF image on receipt of an end_image call, which meant that the 'tiff' member allocated in the image enumerator was never freed. So start by making the gdevp14 device call end_image if it gets an error in case any other devices have similar requirements. For a belt and braces approach, have the xpswrite device's finalize routine for image enumerators free the tif member if it has been initialised. To do this we first need to actually initialise it to NULL on creation of the image enumerator, and set it back to NULL in the end_image routine when we free it.
* Coverity 380513 (redux): Fix correct macro invocationChris Liddell2022-09-021-4/+4
| | | | | Previously, I changed the wrong macro invocation, this puts that back, and changes the correct instance to new macro.
* Add mucsharp option.Robin Watts2022-09-021-0/+1
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