gnu: ghostscript: Update to 9.26.

* gnu/packages/patches/ghostscript-bug-699708.patch,
gnu/packages/patches/ghostscript-CVE-2018-16509.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Remove them.
* gnu/packages/ghostscript.scm (ghostscript): Update to 9.26.
[source](patches): Remove obsolete.

4 files changed, 3 insertions, 360 deletions

diff --git a/gnu/local.mk b/gnu/local.mk
index aaab4c72ec..45d8effc11 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -738,8 +738,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/ghc-8.0-fall-back-to-madv_dontneed.patch \
   %D%/packages/patches/ghc-dont-pass-linker-flags-via-response-files.patch	\
   %D%/packages/patches/ghc-haddock-library-unbundle.patch		\
-  %D%/packages/patches/ghostscript-CVE-2018-16509.patch		\
-  %D%/packages/patches/ghostscript-bug-699708.patch		\
   %D%/packages/patches/ghostscript-no-header-id.patch		\
   %D%/packages/patches/ghostscript-no-header-uuid.patch		\
   %D%/packages/patches/ghostscript-no-header-creationdate.patch \
diff --git a/gnu/packages/ghostscript.scm b/gnu/packages/ghostscript.scm
index b46451d94e..d8c0050513 100644
--- a/gnu/packages/ghostscript.scm
+++ b/gnu/packages/ghostscript.scm
@@ -135,7 +135,7 @@ printing, and psresize, for adjusting page sizes.")
 (define-public ghostscript
   (package
     (name "ghostscript")
-    (version "9.24")
+    (version "9.26")
     (source
       (origin
         (method url-fetch)
@@ -145,10 +145,8 @@ printing, and psresize, for adjusting page sizes.")
                             "/ghostscript-" version ".tar.xz"))
         (sha256
          (base32
-          "1mk922rnml93w2g42yxiyn8xqanc50cm65irrgh0b6lp4kgifjfl"))
-        (patches (search-patches "ghostscript-CVE-2018-16509.patch"
-                                 "ghostscript-bug-699708.patch"
-                                 "ghostscript-no-header-creationdate.patch"
+          "1645f47all5w27bfhiq15vycdm954lmr6agqkrp68ksq6xglgvch"))
+        (patches (search-patches "ghostscript-no-header-creationdate.patch"
                                  "ghostscript-no-header-id.patch"
                                  "ghostscript-no-header-uuid.patch"))
         (modules '((guix build utils)))
diff --git a/gnu/packages/patches/ghostscript-CVE-2018-16509.patch b/gnu/packages/patches/ghostscript-CVE-2018-16509.patch
deleted file mode 100644
index 50ffa3cb98..0000000000
--- a/gnu/packages/patches/ghostscript-CVE-2018-16509.patch
+++ /dev/null
@@ -1,193 +0,0 @@
-Ghostscript 9.24 was released with an incomplete fix for CVE-2018-16509:
-https://nvd.nist.gov/vuln/detail/CVE-2018-16509
-https://bugs.chromium.org/p/project-zero/issues/detail?id=1640#c19
-https://bugs.ghostscript.com/show_bug.cgi?id=699718
-
-The reproducers no longer work after applying these commits:
-
-https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=5812b1b78fc4d36fdc293b7859de69241140d590
-https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=e914f1da46e33decc534486598dc3eadf69e6efb
-https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=3e5d316b72e3965b7968bb1d96baa137cd063ac6
-https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=643b24dbd002fb9c131313253c307cf3951b3d47
-
-This patch is a "squashed" version of those.
-
-diff --git a/Resource/Init/gs_setpd.ps b/Resource/Init/gs_setpd.ps
-index bba3c8c0e..8fa7c51df 100644
---- a/Resource/Init/gs_setpd.ps
-+++ b/Resource/Init/gs_setpd.ps
-@@ -95,27 +95,41 @@ level2dict begin
-  {	% Since setpagedevice doesn't create new device objects,
-         % we must (carefully) reinstall the old parameters in
-         % the same device.
--   .currentpagedevice pop //null currentdevice //null .trysetparams
-+   .currentpagedevice pop //null currentdevice //null
-+   { .trysetparams } .internalstopped
-+   {
-+     //null
-+   } if
-    dup type /booleantype eq
-     { pop pop }
--    {		% This should never happen!
-+    {
-       SETPDDEBUG { (Error in .trysetparams!) = pstack flush } if
--      cleartomark pop pop pop
-+      {cleartomark pop pop pop} .internalstopped pop
-+      % if resetting the entire device state failed, at least put back the
-+      % security related key
-+      currentdevice //null //false mark /.LockSafetyParams
-+      currentpagedevice /.LockSafetyParams .knownget not
-+      {systemdict /SAFER .knownget not {//false} } if
-+      .putdeviceparamsonly
-       /.installpagedevice cvx /rangecheck signalerror
-     }
-    ifelse pop pop
-         % A careful reading of the Red Book reveals that an erasepage
-         % should occur, but *not* an initgraphics.
-    erasepage .beginpage
-- } bind def
-+ } bind executeonly def
- 
- /.uninstallpagedevice
-- { 2 .endpage { .currentnumcopies //false .outputpage } if
-+ {
-+   {2 .endpage { .currentnumcopies //false .outputpage } if} .internalstopped pop
-    nulldevice
-  } bind def
- 
- (%grestorepagedevice) cvn
-- { .uninstallpagedevice grestore .installpagedevice
-+ {
-+ .uninstallpagedevice
-+ grestore
-+ .installpagedevice
-  } bind def
- 
- (%grestoreallpagedevice) cvn
-diff --git a/psi/zdevice2.c b/psi/zdevice2.c
-index 0c7080d57..159a0c0d9 100644
---- a/psi/zdevice2.c
-+++ b/psi/zdevice2.c
-@@ -251,8 +251,8 @@ z2currentgstate(i_ctx_t *i_ctx_p)
- /* ------ Wrappers for operators that reset the graphics state. ------ */
- 
- /* Check whether we need to call out to restore the page device. */
--static bool
--restore_page_device(const gs_gstate * pgs_old, const gs_gstate * pgs_new)
-+static int
-+restore_page_device(i_ctx_t *i_ctx_p, const gs_gstate * pgs_old, const gs_gstate * pgs_new)
- {
-     gx_device *dev_old = gs_currentdevice(pgs_old);
-     gx_device *dev_new;
-@@ -260,9 +260,10 @@ restore_page_device(const gs_gstate * pgs_old, const gs_gstate * pgs_new)
-     gx_device *dev_t2;
-     bool samepagedevice = obj_eq(dev_old->memory, &gs_int_gstate(pgs_old)->pagedevice,
-         &gs_int_gstate(pgs_new)->pagedevice);
-+    bool LockSafetyParams = dev_old->LockSafetyParams;
- 
-     if ((dev_t1 = (*dev_proc(dev_old, get_page_device)) (dev_old)) == 0)
--        return false;
-+        return 0;
-     /* If we are going to putdeviceparams in a callout, we need to */
-     /* unlock temporarily.  The device will be re-locked as needed */
-     /* by putdeviceparams from the pgs_old->pagedevice dict state. */
-@@ -271,23 +272,51 @@ restore_page_device(const gs_gstate * pgs_old, const gs_gstate * pgs_new)
-     dev_new = gs_currentdevice(pgs_new);
-     if (dev_old != dev_new) {
-         if ((dev_t2 = (*dev_proc(dev_new, get_page_device)) (dev_new)) == 0)
--            return false;
--        if (dev_t1 != dev_t2)
--            return true;
-+            samepagedevice = true;
-+        else if (dev_t1 != dev_t2)
-+            samepagedevice = false;
-+    }
-+
-+    if (LockSafetyParams && !samepagedevice) {
-+        const int required_ops = 512;
-+        const int required_es = 32;
-+
-+        /* The %grestorepagedevice must complete: the biggest danger
-+           is operand stack overflow. As we use get/putdeviceparams
-+           that means pushing all the device params onto the stack,
-+           pdfwrite having by far the largest number of parameters
-+           at (currently) 212 key/value pairs - thus needing (currently)
-+           424 entries on the op stack. Allowing for working stack
-+           space, and safety margin.....
-+         */
-+        if (required_ops + ref_stack_count(&o_stack) >= ref_stack_max_count(&o_stack)) {
-+           gs_currentdevice(pgs_old)->LockSafetyParams = LockSafetyParams;
-+           return_error(gs_error_stackoverflow);
-+        }
-+        /* We also want enough exec stack space - 32 is an overestimate of
-+           what we need to complete the Postscript call out.
-+         */
-+        if (required_es + ref_stack_count(&e_stack) >= ref_stack_max_count(&e_stack)) {
-+           gs_currentdevice(pgs_old)->LockSafetyParams = LockSafetyParams;
-+           return_error(gs_error_execstackoverflow);
-+        }
-     }
-     /*
-      * The current implementation of setpagedevice just sets new
-      * parameters in the same device object, so we have to check
-      * whether the page device dictionaries are the same.
-      */
--    return !samepagedevice;
-+    return samepagedevice ? 0 : 1;
- }
- 
- /* - grestore - */
- static int
- z2grestore(i_ctx_t *i_ctx_p)
- {
--    if (!restore_page_device(igs, gs_gstate_saved(igs)))
-+    int code = restore_page_device(i_ctx_p, igs, gs_gstate_saved(igs));
-+    if (code < 0) return code;
-+
-+    if (code == 0)
-         return gs_grestore(igs);
-     return push_callout(i_ctx_p, "%grestorepagedevice");
- }
-@@ -297,7 +326,9 @@ static int
- z2grestoreall(i_ctx_t *i_ctx_p)
- {
-     for (;;) {
--        if (!restore_page_device(igs, gs_gstate_saved(igs))) {
-+        int code = restore_page_device(i_ctx_p, igs, gs_gstate_saved(igs));
-+        if (code < 0) return code;
-+        if (code == 0) {
-             bool done = !gs_gstate_saved(gs_gstate_saved(igs));
- 
-             gs_grestore(igs);
-@@ -328,11 +359,15 @@ z2restore(i_ctx_t *i_ctx_p)
-     if (code < 0) return code;
- 
-     while (gs_gstate_saved(gs_gstate_saved(igs))) {
--        if (restore_page_device(igs, gs_gstate_saved(igs)))
-+        code = restore_page_device(i_ctx_p, igs, gs_gstate_saved(igs));
-+        if (code < 0) return code;
-+        if (code > 0)
-             return push_callout(i_ctx_p, "%restore1pagedevice");
-         gs_grestore(igs);
-     }
--    if (restore_page_device(igs, gs_gstate_saved(igs)))
-+    code = restore_page_device(i_ctx_p, igs, gs_gstate_saved(igs));
-+    if (code < 0) return code;
-+    if (code > 0)
-         return push_callout(i_ctx_p, "%restorepagedevice");
- 
-     code = dorestore(i_ctx_p, asave);
-@@ -355,9 +390,12 @@ static int
- z2setgstate(i_ctx_t *i_ctx_p)
- {
-     os_ptr op = osp;
-+    int code;
- 
-     check_stype(*op, st_igstate_obj);
--    if (!restore_page_device(igs, igstate_ptr(op)))
-+    code = restore_page_device(i_ctx_p, igs, igstate_ptr(op));
-+    if (code < 0) return code;
-+    if (code == 0)
-         return zsetgstate(i_ctx_p);
-     return push_callout(i_ctx_p, "%setgstatepagedevice");
- }
diff --git a/gnu/packages/patches/ghostscript-bug-699708.patch b/gnu/packages/patches/ghostscript-bug-699708.patch
deleted file mode 100644
index 1567be1c6f..0000000000
--- a/gnu/packages/patches/ghostscript-bug-699708.patch
+++ /dev/null
@@ -1,160 +0,0 @@
-Additional security fix that missed 9.24.
-
-Taken from upstream:
-http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=fb713b3818b52d8a6cf62c951eba2e1795ff9624
-
-From fb713b3818b52d8a6cf62c951eba2e1795ff9624 Mon Sep 17 00:00:00 2001
-From: Chris Liddell <chris.liddell@artifex.com>
-Date: Thu, 6 Sep 2018 09:16:22 +0100
-Subject: [PATCH] Bug 699708 (part 1): 'Hide' non-replaceable error handlers
- for SAFER
-
-We already had a 'private' dictionary for non-standard errors: gserrordict.
-
-This now includes all the default error handlers, the dictionary is made
-noaccess and all the prodedures are bound and executeonly.
-
-When running with -dSAFER, in the event of a Postscript error, instead of
-pulling the handler from errordict, we'll pull it from gserrordict - thus
-malicious input cannot trigger problems by the use of custom error handlers.
-
-errordict remains open and writeable, so files such as the Quality Logic tests
-that install their own handlers will still 'work', with the exception that the
-custom error handlers will not be called.
-
-This is a 'first pass', 'sledgehammer' approach: a nice addition would to allow
-an integrator to specify a list of errors that are not to be replaced (for
-example, embedded applications would probably want to ensure that VMerror is
-always handled as they intend).
----
- Resource/Init/gs_init.ps | 29 ++++++++++++++++++-----------
- psi/interp.c             | 30 +++++++++++++++++++++---------
- 2 files changed, 39 insertions(+), 20 deletions(-)
-
-diff --git a/Resource/Init/gs_init.ps b/Resource/Init/gs_init.ps
-index 071c39205..bc8b7951c 100644
---- a/Resource/Init/gs_init.ps
-+++ b/Resource/Init/gs_init.ps
-@@ -881,7 +881,7 @@ userdict /.currentresourcefile //null put
-        { not exch pop exit } { pop } ifelse
-     }
-    for exch pop .quit
-- } bind def
-+ } bind executeonly def
- /.errorhandler		% <command> <errorname> .errorhandler -
-   {		% Detect an internal 'stopped'.
-     1 .instopped { //null eq { pop pop stop } if } if
-@@ -926,7 +926,7 @@ userdict /.currentresourcefile //null put
-     $error /globalmode get $error /.nosetlocal get and .setglobal
-     $error /.inerror //false put
-     stop
--  } bind def
-+  } bind executeonly def
- % Define the standard handleerror.  We break out the printing procedure
- % (.printerror) so that it can be extended for binary output
- % if the Level 2 facilities are present.
-@@ -976,7 +976,7 @@ userdict /.currentresourcefile //null put
-      ifelse	% newerror
-      end
-      flush
--    } bind def
-+    } bind executeonly def
-   /.printerror_long			% long error printout,
-                                         % $error is on the dict stack
-    {	% Push the (anonymous) stack printing procedure.
-@@ -1053,14 +1053,14 @@ userdict /.currentresourcefile //null put
-         { (Current file position is ) print position = }
-        if
- 
--   } bind def
-+   } bind executeonly def
- % Define a procedure for clearing the error indication.
- /.clearerror
-  { $error /newerror //false put
-    $error /errorname //null put
-    $error /errorinfo //null put
-    0 .setoserrno
-- } bind def
-+ } bind executeonly def
- 
- % Define $error.  This must be in local VM.
- .currentglobal //false .setglobal
-@@ -1086,11 +1086,15 @@ end
- /errordict ErrorNames length 3 add dict
- .forcedef		% errordict is local, systemdict is global
- .setglobal		% back to global VM
--% For greater Adobe compatibility, we put all non-standard errors in a
--%   separate dictionary, gserrordict.  It does not need to be in local VM,
--%   because PostScript programs do not access it.
-+%  gserrordict contains all the default error handling methods, but unlike
-+%  errordict it is noaccess after creation (also it is in global VM).
-+%  When running 'SAFER', we'll ignore the contents of errordict, which
-+%  may have been tampered with by the running job, and always use gserrordict
-+%  gserrordict also contains any non-standard errors, for better compatibility
-+%  with Adobe.
-+%
- %   NOTE: the name gserrordict is known to the interpreter.
--/gserrordict 5 dict def
-+/gserrordict ErrorNames length 3 add dict def
- % Register an error in errordict.  We make this a procedure because we only
- % register the Level 1 errors here: the rest are registered by "feature"
- % files.  However, ErrorNames contains all of the error names regardless of
-@@ -1119,8 +1123,11 @@ errordict begin
-  } bind def
- end		% errordict
- 
--% Put non-standard errors in gserrordict.
--gserrordict /unknownerror errordict /unknownerror get put
-+% Put all the default handlers in gserrordict
-+gserrordict
-+errordict {2 index 3 1 roll put} forall
-+noaccess pop
-+% remove the non-standard errors from errordict
- errordict /unknownerror .undef
- % Define a stable private copy of handleerror that we will always use under
- % JOBSERVER mode.
-diff --git a/psi/interp.c b/psi/interp.c
-index c27b70dca..d41a9d3f5 100644
---- a/psi/interp.c
-+++ b/psi/interp.c
-@@ -661,16 +661,28 @@ again:
-         return code;
-     if (gs_errorname(i_ctx_p, code, &error_name) < 0)
-         return code;            /* out-of-range error code! */
--    /*
--     * For greater Adobe compatibility, only the standard PostScript errors
--     * are defined in errordict; the rest are in gserrordict.
-+
-+    /*  If LockFilePermissions is true, we only refer to gserrordict, which
-+     *  is not accessible to Postcript jobs
-      */
--    if (dict_find_string(systemdict, "errordict", &perrordict) <= 0 ||
--        (dict_find(perrordict, &error_name, &epref) <= 0 &&
--         (dict_find_string(systemdict, "gserrordict", &perrordict) <= 0 ||
--          dict_find(perrordict, &error_name, &epref) <= 0))
--        )
--        return code;            /* error name not in errordict??? */
-+    if (i_ctx_p->LockFilePermissions) {
-+        if (((dict_find_string(systemdict, "gserrordict", &perrordict) <= 0 ||
-+              dict_find(perrordict, &error_name, &epref) <= 0))
-+            )
-+            return code;            /* error name not in errordict??? */
-+    }
-+    else {
-+        /*
-+         * For greater Adobe compatibility, only the standard PostScript errors
-+         * are defined in errordict; the rest are in gserrordict.
-+         */
-+        if (dict_find_string(systemdict, "errordict", &perrordict) <= 0 ||
-+            (dict_find(perrordict, &error_name, &epref) <= 0 &&
-+             (dict_find_string(systemdict, "gserrordict", &perrordict) <= 0 ||
-+              dict_find(perrordict, &error_name, &epref) <= 0))
-+            )
-+            return code;            /* error name not in errordict??? */
-+    }
-     doref = *epref;
-     epref = &doref;
-     /* Push the error object on the operand stack if appropriate. */
--- 
-2.18.0
-