Patchwork [V3] patchbomb: protect email addresses from shell

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Submitter Floris Bruynooghe
Date Oct. 2, 2019, 7:36 p.m.
Message ID <0c59ff5e182ef2b64e0a.1570044969@powell.devork.be>
Download mbox | patch
Permalink /patch/41929/
State New
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Floris Bruynooghe - Oct. 2, 2019, 7:36 p.m.
# HG changeset patch
# User Floris Bruynooghe <flub@google.com>
# Date 1569794518 -7200
#      Mon Sep 30 00:01:58 2019 +0200
# Node ID 0c59ff5e182ef2b64e0a54cea352df5c43e1c530
# Parent  bbf77341a956b3ba40ae87538fcd200b34c5a3e5
patchbomb: protect email addresses from shell

When patchbomb sends email via a sendmail-like program it invokes this
using procutil.popen which passes the string to a shell to be parsed.
To protect any special characters in the email addresses on the
command line from being interpretered by the shell they must be
quoted.

Patch

diff --git a/mercurial/mail.py b/mercurial/mail.py
--- a/mercurial/mail.py
+++ b/mercurial/mail.py
@@ -152,7 +152,8 @@  def _smtp(ui):
 def _sendmail(ui, sender, recipients, msg):
     '''send mail using sendmail.'''
     program = ui.config('email', 'method')
-    stremail = lambda x: stringutil.email(encoding.strtolocal(x))
+    stremail = lambda x: \
+        procutil.shellquote(stringutil.email(encoding.strtolocal(x)))
     cmdline = '%s -f %s %s' % (program, stremail(sender),
                                ' '.join(map(stremail, recipients)))
     ui.note(_('sending mail: %s\n') % cmdline)
diff --git a/tests/test-patchbomb.t b/tests/test-patchbomb.t
--- a/tests/test-patchbomb.t
+++ b/tests/test-patchbomb.t
@@ -3035,6 +3035,47 @@  single rev
   sending [PATCH] test ...
   sending mail: $TESTTMP/t2/pretendmail.sh -f test foo
 
+Shell characters in addresses
+
+  $ hg email --date '1980-1-1 0:1' -v -t '~foo/bar@example.com' -f 'me*@example.com' -r '10'
+  this patch series consists of 1 patches.
+  
+  warning: invalid patchbomb.intro value "mpmwearaclownnose"
+  (should be one of always, never, auto)
+  -f me*@example.com ~foo/bar@example.com
+  MIME-Version: 1.0
+  Content-Type: text/plain; charset="us-ascii"
+  Content-Transfer-Encoding: 7bit
+  Subject: [PATCH] dd
+  X-Mercurial-Node: 3b6f1ec9dde933a40a115a7990f8b320477231af
+  X-Mercurial-Series-Index: 1
+  X-Mercurial-Series-Total: 1
+  Message-Id: <3b6f1ec9dde933a40a11*> (glob)
+  X-Mercurial-Series-Id: <3b6f1ec9dde933a40a11.*> (glob)
+  User-Agent: Mercurial-patchbomb/* (glob)
+  Date: Tue, 01 Jan 1980 00:01:00 +0000
+  From: me*@example.com
+  To: ~foo/bar@example.com
+  
+  # HG changeset patch
+  # User test
+  # Date 5 0
+  #      Thu Jan 01 00:00:05 1970 +0000
+  # Branch test
+  # Node ID 3b6f1ec9dde933a40a115a7990f8b320477231af
+  # Parent  2f9fa9b998c5fe3ac2bd9a2b14bfcbeecbc7c268
+  dd
+  
+  diff -r 2f9fa9b998c5 -r 3b6f1ec9dde9 d
+  --- a/d	Thu Jan 01 00:00:04 1970 +0000
+  +++ b/d	Thu Jan 01 00:00:05 1970 +0000
+  @@ -1,1 +1,2 @@
+   d
+  +d
+  
+  sending [PATCH] dd ...
+  sending mail: $TESTTMP/t2/pretendmail.sh -f 'me*@example.com' '~foo/bar@example.com'
+
 Test pull url header
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