Leo Famulari <l...@famulari.name> writes:

> On Sat, Dec 24, 2016 at 08:59:59PM -0500, Kei Kebreau wrote:
>> Leo Famulari <l...@famulari.name> writes:
>> 
>> > On Sat, Dec 24, 2016 at 02:23:43PM -0500, Kei Kebreau wrote:
>> >> Leo Famulari <l...@famulari.name> writes:
>> >> > On Thu, Dec 22, 2016 at 02:20:37PM -0500, Kei Kebreau wrote:
>> >> >> Subject: [PATCH] gnu: chicken: Fix CVE-2016-{6830,6831}.
>> >> >> 
>> >> >> *
>> >> >> gnu/packages/patches/chicken-CVE-2016-6830+CVE-2016-6831.patch:
>> >> >> New file.
>> >> >> * gnu/local.mk (dist_patch_DATA): Use it.
>> >> >> * gnu/packages/scheme.scm (chicken)[source]: Use it.
>> >> >
>> >> > Thank you for looking into this!
>> >> >
>> >> > Something like this patch is in CHICKEN 4.11.1:
>> >> >
>> >> > https://code.call-cc.org/cgi-bin/gitweb.cgi?p=chicken-core.git;a=commitdiff;h=0d20426c6da0f116606574dadadaa878b96a68ea
>> >> >
>> >> > And there is a patch for the IrRegex bug after the latest tag:
>> >> >
>> >> > https://code.call-cc.org/cgi-bin/gitweb.cgi?p=chicken-core.git;a=commitdiff;h=2c419f18138c17767754b36d3b706cd71a55350a
>> >> >
>> >> > Can you try updating CHICKEN and applying that IrRegex patch?
>> >> 
>> >> I can try, but updating to CHICKEN 4.11.1 requires a recent CHICKEN
>> >> binary due to its build system requirements. Do we have any objection to
>> >> bootstrapping CHICKEN 4.11.1 from version 4.11.0?
>> >
>> > Interesting!
>> >
>> > I don't see why we shouldn't use 4.11.0 to bootstrap 4.11.1.
>> >
>> > Changing the build system like that seems unusual for a minor point
>> > release, and I don't see it documented in the 4.11.1 NEWS file:
>> >
>> > https://code.call-cc.org/cgi-bin/gitweb.cgi?p=chicken-core.git;a=blob;f=NEWS;h=545d68583c8375bd5243ec07a53faff9ec1685a3;hb=116f42e7a3eab2a02b853fd038af3cb3aadad5c3
>> >
>> 
>> I must have phrased that too vaguely. It's just a "building from release
>> tarball vs from git checkout" thing, documented in the README file of
>> both releases. I've been having trouble with the seemingly identical
>> test suite using the attached WIP patch. Perhaps the dreary wheather is
>> clouding my thoughts.
>
> How about using a development snapshot?
>
> http://code.call-cc.org/dev-snapshots/

Ah, this works excellently. Thanks for the pointer! The two attached
patches should do the trick.
From 41ce29321b21edc698a9ed2ce6dab09f2d190d50 Mon Sep 17 00:00:00 2001
From: Kei Kebreau <k...@openmailbox.org>
Date: Sun, 1 Jan 2017 21:49:04 -0500
Subject: [PATCH] gnu: chicken: Update to 4.11.1.

* gnu/packages/scheme.scm (chicken): Update to 4.11.1.
---
 gnu/packages/scheme.scm | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/gnu/packages/scheme.scm b/gnu/packages/scheme.scm
index 78f387faf..fd96869e2 100644
--- a/gnu/packages/scheme.scm
+++ b/gnu/packages/scheme.scm
@@ -323,14 +323,14 @@ mashups, office (web agendas, mail clients, ...), etc.")
 (define-public chicken
   (package
     (name "chicken")
-    (version "4.11.0")
+    (version "4.11.1")
     (source (origin
              (method url-fetch)
-             (uri (string-append "http://code.call-cc.org/releases/";
-                                 version "/chicken-" version ".tar.gz"))
+             (uri (string-append "http://code.call-cc.org/dev-snapshots/";
+                                 "/2016/09/12/chicken-" version ".tar.gz"))
              (sha256
               (base32
-               "12ddyiikqknpr8h6llsxbg2fz75xnayvcnsvr1cwv8xnjn7jpp73"))))
+               "1rwymbbmnwdyhdzilv9w75an989xw9kjf3x52iqdng3nphpflcga"))))
     (build-system gnu-build-system)
     (arguments
      `(#:modules ((guix build gnu-build-system)
@@ -344,14 +344,7 @@ mashups, office (web agendas, mail clients, ...), etc.")
          (delete 'configure)
          (delete 'check)
          (add-after 'install 'check
-           (assoc-ref %standard-phases 'check))
-         (add-after 'unpack 'disable-broken-tests
-           (lambda _
-             ;; The port tests fail with this error:
-             ;; Error: (line 294) invalid escape-sequence '\x o'
-             (substitute* "tests/runtests.sh"
-               (("\\$interpret -s port-tests\\.scm") ""))
-             #t)))
+           (assoc-ref %standard-phases 'check)))
 
        #:make-flags (let ((out (assoc-ref %outputs "out")))
                       (list "PLATFORM=linux"
-- 
2.11.0

From bd9b1255d37c2f9b2d6af61d1ad01e0a5c58838e Mon Sep 17 00:00:00 2001
From: Kei Kebreau <k...@openmailbox.org>
Date: Sun, 1 Jan 2017 23:02:53 -0500
Subject: [PATCH] gnu: chicken: Fix CVE-2016-{6830,6831}.

* gnu/packages/patches/chicken-CVE-2016-6830+CVE-2016-6831.patch: New file.
* gnu/local.mk (dist_patch_DATA): Use it.
* gnu/packages/scheme.scm (chicken)[source]: Use it.
---
 gnu/local.mk                                       |  1 +
 .../chicken-CVE-2016-6830+CVE-2016-6831.patch      | 84 ++++++++++++++++++++++
 gnu/packages/scheme.scm                            |  4 +-
 3 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100644 
gnu/packages/patches/chicken-CVE-2016-6830+CVE-2016-6831.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 6ab1c1c48..0c42f9f44 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -497,6 +497,7 @@ dist_patch_DATA =                                           
\
   %D%/packages/patches/calibre-drop-unrar.patch                        \
   %D%/packages/patches/calibre-no-updates-dialog.patch         \
   %D%/packages/patches/cdparanoia-fpic.patch                   \
+  %D%/packages/patches/chicken-CVE-2016-6830+CVE-2016-6831.patch       \
   %D%/packages/patches/chmlib-inttypes.patch                   \
   %D%/packages/patches/clang-libc-search-path.patch            \
   %D%/packages/patches/clang-3.8-libc-search-path.patch                \
diff --git a/gnu/packages/patches/chicken-CVE-2016-6830+CVE-2016-6831.patch 
b/gnu/packages/patches/chicken-CVE-2016-6830+CVE-2016-6831.patch
new file mode 100644
index 000000000..43d6b579b
--- /dev/null
+++ b/gnu/packages/patches/chicken-CVE-2016-6830+CVE-2016-6831.patch
@@ -0,0 +1,84 @@
+Patch by Kei Kebreau, adapted from
+https://code.call-cc.org/cgi-bin/gitweb.cgi?p=chicken-core.git;a=commitdiff;h=2c419f18138c17767754b36d3b706cd71a55350a
+
+diff -ur a/irregex-core.scm b/irregex-core.scm
+--- a/irregex-core.scm 2016-09-11 19:03:00.000000000 -0400
++++ b/irregex-core.scm 2017-01-01 22:24:08.416587807 -0500
+@@ -30,6 +30,8 @@
+ 
+ ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+ ;;;; History
++;; 0.9.6: 2016/12/05 - fixed exponential memory use of + in compilation
++;;                     of backtracking matcher.
+ ;; 0.9.5: 2016/09/10 - fixed a bug in irregex-fold handling of bow
+ ;; 0.9.4: 2015/12/14 - performance improvement for {n,m} matches
+ ;; 0.9.3: 2014/07/01 - R7RS library
+@@ -3170,16 +3172,7 @@
+               ((sre-empty? (sre-sequence (cdr sre)))
+                (error "invalid sre: empty *" sre))
+               (else
+-               (letrec
+-                   ((body
+-                     (lp (sre-sequence (cdr sre))
+-                         n
+-                         flags
+-                         (lambda (cnk init src str i end matches fail)
+-                           (body cnk init src str i end matches
+-                                 (lambda ()
+-                                   (next cnk init src str i end matches fail)
+-                                   ))))))
++               (let ((body (rec (list '+ (sre-sequence (cdr sre))))))
+                  (lambda (cnk init src str i end matches fail)
+                    (body cnk init src str i end matches
+                          (lambda ()
+@@ -3204,10 +3197,21 @@
+                          (lambda ()
+                            (body cnk init src str i end matches fail))))))))
+             ((+)
+-             (lp (sre-sequence (cdr sre))
+-                 n
+-                 flags
+-                 (rec (list '* (sre-sequence (cdr sre))))))
++             (cond
++              ((sre-empty? (sre-sequence (cdr sre)))
++               (error "invalid sre: empty +" sre))
++              (else
++               (letrec
++                   ((body
++                     (lp (sre-sequence (cdr sre))
++                         n
++                         flags
++                         (lambda (cnk init src str i end matches fail)
++                           (body cnk init src str i end matches
++                                 (lambda ()
++                                   (next cnk init src str i end matches fail)
++                                   ))))))
++                 body))))
+             ((=)
+              (rec `(** ,(cadr sre) ,(cadr sre) ,@(cddr sre))))
+             ((>=)
+diff -ur a/irregex-utils.scm b/irregex-utils.scm
+--- a/irregex-utils.scm        2016-09-11 19:03:00.000000000 -0400
++++ b/irregex-utils.scm        2017-01-01 22:25:25.447219474 -0500
+@@ -89,7 +89,7 @@
+         (case (car x)
+           ((: seq)
+            (cond
+-            ((and (pair? (cddr x)) (pair? (cddr x)) (not (eq? x obj)))
++            ((and (pair? (cdr x)) (pair? (cddr x)) (not (eq? x obj)))
+              (display "(?:" out) (for-each lp (cdr x)) (display ")" out))
+             (else (for-each lp (cdr x)))))
+           ((submatch)
+diff -ur "a/manual-html/Unit irregex.html" "b/manual-html/Unit irregex.html"
+--- "a/manual-html/Unit irregex.html"  2016-09-11 19:10:47.000000000 -0400
++++ "b/manual-html/Unit irregex.html"  2017-01-01 22:26:05.100574188 -0500
+@@ -353,6 +353,6 @@
+ <dd class="defsig"><p>Returns an optimized SRE matching any of the literal 
strings in the list, like Emacs' <tt>regexp-opt</tt>.  Note this optimization 
doesn't help when irregex is able to build a DFA.</p></dd>
+ </dl>
+ <h5 id="sec:sre-.3estring"><a 
href="#sec:sre-.3estring">sre-&gt;string</a></h5><dl class="defsig"><dt 
class="defsig" id="def:sre-.3estring"><span class="sig"><tt>(sre-&gt;string 
&lt;sre&gt;)</tt></span> <span class="type">procedure</span></dt>
+-<dd class="defsig"><p>Convert an SRE to a POSIX-style regular expression 
string, if possible.</p></dd>
++<dd class="defsig"><p>Convert an SRE to a PCRE-style regular expression 
string, if possible.</p></dd>
+ </dl>
+-<hr /><p>Previous: <a href="Unit%20extras.html">Unit extras</a></p><p>Next: 
<a href="Unit%20srfi-1.html">Unit srfi-1</a></p></div></div></body>
+\ No newline at end of file
++<hr /><p>Previous: <a href="Unit%20extras.html">Unit extras</a></p><p>Next: 
<a href="Unit%20srfi-1.html">Unit srfi-1</a></p></div></div></body>
diff --git a/gnu/packages/scheme.scm b/gnu/packages/scheme.scm
index fd96869e2..1fa2e7013 100644
--- a/gnu/packages/scheme.scm
+++ b/gnu/packages/scheme.scm
@@ -330,7 +330,9 @@ mashups, office (web agendas, mail clients, ...), etc.")
                                  "/2016/09/12/chicken-" version ".tar.gz"))
              (sha256
               (base32
-               "1rwymbbmnwdyhdzilv9w75an989xw9kjf3x52iqdng3nphpflcga"))))
+               "1rwymbbmnwdyhdzilv9w75an989xw9kjf3x52iqdng3nphpflcga"))
+             (patches
+              (search-patches "chicken-CVE-2016-6830+CVE-2016-6831.patch"))))
     (build-system gnu-build-system)
     (arguments
      `(#:modules ((guix build gnu-build-system)
-- 
2.11.0

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