Read passwords from stdin when importing PKCS#12 files with pk12util.

This works around pk12util refusing to use empty password files, which prevents
the use of PKCS#12 files with empty password.

https://fedorahosted.org/freeipa/ticket/3897

ipaserver/install/certs.py

@@ -176,14 +176,15 @@ class NSSDatabase(object):
         return root_nicknames
 
     def import_pkcs12(self, pkcs12_filename, db_password_filename,
-                      pkcs_password_filename=None):
+                      pkcs12_passwd=None):
         args = ["/usr/bin/pk12util", "-d", self.secdir,
                 "-i", pkcs12_filename,
                 "-k", db_password_filename, '-v']
-        if pkcs_password_filename:
-            args = args + ["-w", pkcs_password_filename]
+        if pkcs12_passwd is not None:
+            pkcs12_passwd = pkcs12_passwd + '\n'
+            args = args + ["-w", "/dev/stdin"]
         try:
-            ipautil.run(args)
+            ipautil.run(args, stdin=pkcs12_passwd)
         except ipautil.CalledProcessError, e:
             if e.returncode == 17:
                 raise RuntimeError("incorrect password for pkcs#12 file %s" %
@@ -770,9 +771,9 @@ class CertDB(object):
     def find_server_certs(self):
         return self.nssdb.find_server_certs()
 
-    def import_pkcs12(self, pkcs12_fname, passwd_fname=None):
+    def import_pkcs12(self, pkcs12_fname, pkcs12_passwd=None):
         return self.nssdb.import_pkcs12(pkcs12_fname, self.passwd_fname,
-                                        pkcs_password_filename=passwd_fname)
+                                        pkcs12_passwd=pkcs12_passwd)
 
     def export_pkcs12(self, pkcs12_fname, pkcs12_pwd_fname, nickname=None):
         if nickname is None:
@@ -814,7 +815,7 @@ class CertDB(object):
         self.create_certdbs()
         self.load_cacert(cacert_fname)
 
-    def create_from_pkcs12(self, pkcs12_fname, pkcs12_pwd_fname, passwd=None,
+    def create_from_pkcs12(self, pkcs12_fname, pkcs12_passwd, passwd=None,
                            ca_file=None):
         """Create a new NSS database using the certificates in a PKCS#12 file.
 
@@ -831,7 +832,7 @@ class CertDB(object):
         self.create_noise_file()
         self.create_passwd_file(passwd)
         self.create_certdbs()
-        self.import_pkcs12(pkcs12_fname, pkcs12_pwd_fname)
+        self.import_pkcs12(pkcs12_fname, pkcs12_passwd)
         server_certs = self.find_server_certs()
         if len(server_certs) == 0:
             raise RuntimeError("Could not find a suitable server cert in import in %s" % pkcs12_fname)
@@ -854,10 +855,11 @@ class CertDB(object):
         self.create_pin_file()
         self.export_ca_cert(nickname, False)
 
-    def install_pem_from_p12(self, p12_fname, p12_pwd_fname, pem_fname):
+    def install_pem_from_p12(self, p12_fname, p12_passwd, pem_fname):
+        pwd = ipautil.write_tmp_file(p12_passwd)
         ipautil.run(["/usr/bin/openssl", "pkcs12", "-nodes",
                      "-in", p12_fname, "-out", pem_fname,
-                     "-passin", "file:" + p12_pwd_fname])
+                     "-passin", "file:" + pwd.name])
 
     def publish_ca_cert(self, location):
         shutil.copy(self.cacert_fname, location)

ipaserver/install/installutils.py

@@ -720,7 +720,7 @@ def check_pkcs12(pkcs12_info, ca_file, hostname):
 
     Return a (server cert name, CA cert names) tuple
     """
-    pkcs12_filename, pin_filename = pkcs12_info
+    pkcs12_filename, pkcs12_passwd = pkcs12_info
     root_logger.debug('Checking PKCS#12 certificate %s', pkcs12_filename)
     db_pwd_file = ipautil.write_tmp_file(ipautil.ipa_generate_password())
     with certs.NSSDatabase() as nssdb:
@@ -735,7 +735,7 @@ def check_pkcs12(pkcs12_info, ca_file, hostname):
             raise ScriptError(str(e))
 
         # Import everything in the PKCS#12
-        nssdb.import_pkcs12(pkcs12_filename, db_pwd_file.name, pin_filename)
+        nssdb.import_pkcs12(pkcs12_filename, db_pwd_file.name, pkcs12_passwd)
 
         # Check we have exactly one server cert (one with a private key)
         server_certs = nssdb.find_server_certs()

ipaserver/install/ipa_replica_prepare.py

@@ -137,9 +137,8 @@ class ReplicaPrepare(admintool.AdminTool):
                 "could not find directory instance: %s" % config_dir)
 
     def check_pkcs12(self, pkcs12_file, pkcs12_pin):
-        pin_file = ipautil.write_tmp_file(pkcs12_pin)
         installutils.check_pkcs12(
-            pkcs12_info=(pkcs12_file, pin_file.name),
+            pkcs12_info=(pkcs12_file, pkcs12_pin),
             ca_file='/etc/ipa/ca.crt',
             hostname=self.replica_fqdn)
 

ipaserver/install/ipa_server_certinstall.py

@@ -155,9 +155,8 @@ class ServerCertInstall(admintool.AdminTool):
         os.chown(os.path.join(dirname, 'secmod.db'), 0, pent.pw_gid)
 
     def import_cert(self, dirname, pkcs12_passwd, old_cert, principal, command):
-        pw = write_tmp_file(pkcs12_passwd)
         server_cert = installutils.check_pkcs12(
-            pkcs12_info=(self.pkcs12_fname, pw.name),
+            pkcs12_info=(self.pkcs12_fname, pkcs12_passwd),
             ca_file=CACERT,
             hostname=api.env.host)
 
@@ -167,7 +166,7 @@ class ServerCertInstall(admintool.AdminTool):
                 cdb.untrack_server_cert(old_cert)
 
             cdb.delete_cert(old_cert)
-            cdb.import_pkcs12(self.pkcs12_fname, pw.name)
+            cdb.import_pkcs12(self.pkcs12_fname, pkcs12_passwd)
 
             if api.env.enable_ra:
                 cdb.track_server_cert(server_cert, principal, cdb.passwd_fname,