Merge pull request #2179 from gavinandresen/osx_codesign

Update mac packaging tool to create code-signed .app packages

contrib/macdeploy/macdeployqtplus

@@ -18,6 +18,7 @@
 #
 
 import subprocess, sys, re, os, shutil, stat, os.path
+from string import Template
 from time import sleep
 from argparse import ArgumentParser
 
@@ -429,12 +430,17 @@ ap = ArgumentParser(description="""Improved version of macdeployqt.
 Outputs a ready-to-deploy app in a folder "dist" and optionally wraps it in a .dmg file.
 Note, that the "dist" folder will be deleted before deploying on each run.
 
-Optionally, Qt translation files (.qm) and additional resources can be added to the bundle.""")
+Optionally, Qt translation files (.qm) and additional resources can be added to the bundle.
+
+Also optionally signs the .app bundle; set the CODESIGNARGS environment variable to pass arguments
+to the codesign tool.
+E.g. CODESIGNARGS='--sign "Developer ID Application: ..." --keychain /encrypted/foo.keychain'""")
 
 ap.add_argument("app_bundle", nargs=1, metavar="app-bundle", help="application bundle to be deployed")
 ap.add_argument("-verbose", type=int, nargs=1, default=[1], metavar="<0-3>", help="0 = no output, 1 = error/warning (default), 2 = normal, 3 = debug")
 ap.add_argument("-no-plugins", dest="plugins", action="store_false", default=True, help="skip plugin deployment")
 ap.add_argument("-no-strip", dest="strip", action="store_false", default=True, help="don't run 'strip' on the binaries")
+ap.add_argument("-sign", dest="sign", action="store_true", default=False, help="sign .app bundle with codesign tool")
 ap.add_argument("-dmg", nargs="?", const="", metavar="basename", help="create a .dmg disk image; if basename is not specified, a camel-cased version of the app name is used")
 ap.add_argument("-fancy", nargs=1, metavar="plist", default=[], help="make a fancy looking disk image using the given plist file with instructions; requires -dmg to work")
 ap.add_argument("-add-qt-tr", nargs=1, metavar="languages", default=[], help="add Qt translation files to the bundle's ressources; the language list must be separated with commas, not with whitespace")
@@ -635,6 +641,15 @@ for p in config.add_resources:
 
 # ------------------------------------------------
 
+if config.sign and 'CODESIGNARGS' not in os.environ:
+    print "You must set the CODESIGNARGS environment variable. Skipping signing."
+elif config.sign:
+    if verbose >= 1:
+        print "Code-signing app bundle %s"%(target,)
+    subprocess.check_call("codesign --force %s %s"%(os.environ['CODESIGNARGS'], target), shell=True)
+
+# ------------------------------------------------
+
 if config.dmg is not None:
     def runHDIUtil(verb, image_basename, **kwargs):
         hdiutil_args = ["hdiutil", verb, image_basename + ".dmg"]
@@ -713,30 +728,67 @@ if config.dmg is not None:
         if fancy.get("applications_symlink", False):
             os.symlink("/Applications", os.path.join(disk_root, "Applications"))
         
-        finder = appscript.app("Finder")
+        # The Python appscript package broke with OSX 10.8 and isn't being fixed.
-        disk = finder.disks[disk_name]
+        # So we now build up an AppleScript string and use the osascript command
-        disk.open()
+        # to make the .dmg file pretty:
-        window = disk.container_window
+        appscript = Template( """
-        window.current_view.set(appscript.k.icon_view)
+        on run argv
-        window.toolbar_visible.set(False)
+           tell application "Finder"
-        window.statusbar_visible.set(False)
+             tell disk "$disk"
-        if fancy.has_key("window_bounds"):
+                   open
-            window.bounds.set(fancy["window_bounds"])
+                   set current view of container window to icon view
-        view_options = window.icon_view_options
+                   set toolbar visible of container window to false
-        view_options.arrangement.set(appscript.k.not_arranged)
+                   set statusbar visible of container window to false
-        if fancy.has_key("icon_size"):
+                   set the bounds of container window to {$window_bounds}
-            view_options.icon_size.set(fancy["icon_size"])
+                   set theViewOptions to the icon view options of container window
-        if bg_path is not None:
+                   set arrangement of theViewOptions to not arranged
-            view_options.background_picture.set(disk.files[os.path.basename(bg_path)])
+                   set icon size of theViewOptions to $icon_size
+                   $background_commands
+                   $items_positions
+                   close -- close/reopen works around a bug...
+                   open
+                   update without registering applications
+                   delay 5
+                   eject
+             end tell
+           end tell
+        end run
+        """)
+
+        itemscript = Template('set position of item "${item}" of container window to {${position}}')
+        items_positions = []
         if fancy.has_key("items_position"):
             for name, position in fancy["items_position"].iteritems():
-                window.items[name].position.set(position)
+                params = { "item" : name, "position" : ",".join([str(p) for p in position]) }
-        disk.close()
+                items_positions.append(itemscript.substitute(params))
+
+        params = {
+            "disk" : "Bitcoin-Qt",
+            "window_bounds" : "300,300,800,620",
+            "icon_size" : "96",
+            "background_commands" : "",
+            "items_positions" : "\n                   ".join(items_positions)
+            }
+        if fancy.has_key("window_bounds"):
+            params["window.bounds"] = ",".join([str(p) for p in fancy["window_bounds"]])
+        if fancy.has_key("icon_size"):
+            params["icon_size"] = str(fancy["icon_size"])
         if bg_path is not None:
-            subprocess.call(["SetFile", "-a", "V", bg_path])
+            # Set background file, then call SetFile to make it invisible.
-#        disk.update(registering_applications=False)
+            # (note: making it invisible first makes set background picture fail)
-        sleep(2)
+            bgscript = Template("""set background picture of theViewOptions to file "$bgpic"
-        disk.eject()
+                   do shell script "SetFile -a V /Volumes/$disk/$bgpic" """)
+            params["background_commands"] = bgscript.substitute({"bgpic" : os.path.basename(bg_path), "disk" : params["disk"]})
+
+        s = appscript.substitute(params)
+        if verbose >= 2:
+            print("Running AppleScript:")
+            print(s)
+
+        p = subprocess.Popen(['osascript', '-'], stdin=subprocess.PIPE)
+        p.communicate(input=s)
+        if p.returncode:
+            print("Error running osascript.")
 
         if verbose >= 2:
             print "+ Finalizing .dmg disk image +"

doc/release-process.txt

@@ -72,12 +72,7 @@
    rm -rf bitcoin-${VERSION}-win32
 
 * perform Mac build
-  See this blog post for how Gavin set up his build environment to build the OSX
+  OSX binaries are created by Gavin Andresen on a 32-bit, OSX 10.6 machine.
-  release; note that a patched version of macdeployqt is not needed anymore, as
-  the required functionality and fixes are implemented directly in macdeployqtplus:
-    http://gavintech.blogspot.com/2011/11/deploying-bitcoin-qt-on-osx.html
-  Gavin also had trouble with the macports py27-appscript package; he
-  ended up installing a version that worked with: /usr/bin/easy_install-2.7 appscript
 
   qmake RELEASE=1 USE_UPNP=1 USE_QRCODE=1 bitcoin-qt.pro
   make
@@ -88,6 +83,9 @@
  Build output expected:
   Bitcoin-Qt.dmg
 
+* Code-sign Windows -setup.exe (in a Windows virtual machine) and
+  OSX Bitcoin-Qt.app (Note: only Gavin has the code-signing keys currently)
+
 * upload builds to SourceForge
 
 * create SHA256SUMS for builds, and PGP-sign it

share/certs/BitcoinFoundation_Apple_Cert.pem

@@ -0,0 +1,37 @@
+Bag Attributes
+    friendlyName: Developer ID Application: BITCOIN FOUNDATION, INC., THE
+    localKeyID: 6B 9C 6C A8 A5 73 70 70 E2 57 A3 49 D8 62 FB 97 C7 A5 5D 5E 
+subject=/UID=PBV4GLS9J4/CN=Developer ID Application: BITCOIN FOUNDATION, INC., THE/OU=PBV4GLS9J4/O=BITCOIN FOUNDATION, INC., THE/C=US
+issuer=/CN=Developer ID Certification Authority/OU=Apple Certification Authority/O=Apple Inc./C=US
+-----BEGIN CERTIFICATE-----
+MIIFhzCCBG+gAwIBAgIIJ0r1rumyfZAwDQYJKoZIhvcNAQELBQAweTEtMCsGA1UE
+AwwkRGV2ZWxvcGVyIElEIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MSYwJAYDVQQL
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+-----END CERTIFICATE-----

share/certs/BitcoinFoundation_Comodo_Cert.pem

@@ -0,0 +1,37 @@
+Bag Attributes
+    friendlyName: The Bitcoin Foundation, Inc.'s COMODO CA Limited ID
+    localKeyID: 8C 94 64 E3 B5 B0 41 89 5B 89 B0 57 CC 74 B9 44 E5 B2 92 66 
+subject=/C=US/postalCode=98104-1444/ST=WA/L=Seattle/street=Suite 300/street=71 Columbia St/O=The Bitcoin Foundation, Inc./CN=The Bitcoin Foundation, Inc.
+issuer=/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO Code Signing CA 2
+-----BEGIN CERTIFICATE-----
+MIIFeDCCBGCgAwIBAgIRAJVYMd+waOER7lUqtiz3M2IwDQYJKoZIhvcNAQEFBQAw
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+-----END CERTIFICATE-----

share/certs/PrivateKeyNotes.md

@@ -0,0 +1,46 @@
+Code-signing private key notes
+==
+
+The private keys for these certificates were generated on Gavin's main work machine,
+following the certificate authoritys' recommendations for generating certificate
+signing requests.
+
+For OSX, the private key was generated by Keychain.app on Gavin's main work machine.
+The key and certificate is in a separate, passphrase-protected keychain file that is
+unlocked to sign the Bitcoin-Qt.app bundle.
+
+For Windows, the private key was generated by Firefox running on Gavin's main work machine.
+The key and certificate were exported into a separate, passphrase-protected PKCS#12 file, and
+then deleted from Firefox's keystore. The exported file is used to sign the Windows setup.exe.
+
+Threat analysis
+--
+
+Gavin is a single point of failure. He could be coerced to divulge the secret signing keys,
+allowing somebody to distribute a Bitcoin-Qt.app or bitcoin-qt-setup.exe with a valid
+signature but containing a malicious binary.
+
+Or the machine Gavin uses to sign the binaries could be compromised, either remotely or
+by breaking in to his office, allowing the attacker to get the private key files and then
+install a keylogger to get the passphrase that protects them.
+
+Threat Mitigation
+--
+
+"Air gapping" the machine used to do the signing will not work, because the signing
+process needs to access a timestamp server over the network. And it would not
+prevent the "rubber hose cryptography" threat (coercing Gavin to sign a bad binary
+or divulge the private keys).
+
+Windows binaries are reproducibly 'gitian-built', and the setup.exe file created
+by the NSIS installer system is a 7zip archive, so you could check to make sure
+that the bitcoin-qt.exe file inside the installer had not been tampered with.
+However, an attacker could modify the installer's code, so when the setup.exe
+was run it compromised users' systems. A volunteer to write an auditing tool
+that checks the setup.exe for tampering, and checks the files in it against
+the list of gitian signatures, is needed.
+
+The long-term solution is something like the 'gitian downloader' system, which
+uses signatures from multiple developers to determine whether or not a binary
+should be trusted. However, that just pushes the problem to "how will
+non-technical users securely get the gitian downloader code to start?"