From 7705f310f1406fe49b45e16c371b09863313f24f Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Sun, 3 Jul 2016 00:41:30 +0200
Subject: tools: Call sendmail directly from the wks tools.

* tools/send-mail.c, tools/send-mail.h: New.
* tools/wks-util.c: New.
* tools/Makefile.am (gpg_wks_server_SOURCES): Add them.
(gpg_wks_client_SOURCES): Ditto.
* tools/gpg-wks.h (opt): Add fields use_sendmail and output.
* tools/gpg-wks-client.c: Add options --send and --output.  Rename
command --send to --create.
(command_send, send_confirmation_response): Output via wks_send_mime.
* tools/gpg-wks-server.c:  Add options --send and --output.
(send_confirmation_request): Output via wks_send_mime.
(check_and_publish): Add hack for name-value bug.
--

With this code, a dedicated user on the server along with a procmail
script, it was possible to run a basic test.

Signed-off-by: Werner Koch <wk@gnupg.org>
---
 tools/send-mail.c | 129 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 tools/send-mail.c

(limited to 'tools/send-mail.c')

diff --git a/tools/send-mail.c b/tools/send-mail.c
new file mode 100644
index 000000000..2266521a4
--- /dev/null
+++ b/tools/send-mail.c
@@ -0,0 +1,129 @@
+/* send-mail.c - Invoke sendmail or other delivery tool.
+ * Copyright (C) 2016 g10 Code GmbH
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "util.h"
+#include "exectool.h"
+#include "sysutils.h"
+#include "send-mail.h"
+
+
+static gpg_error_t
+run_sendmail (estream_t data)
+{
+  gpg_error_t err;
+  const char pgmname[] = "/usr/lib/sendmail";
+  const char *argv[3];
+
+  argv[0] = "-oi";
+  argv[1] = "-t";
+  argv[2] = NULL;
+
+  err = gnupg_exec_tool_stream (pgmname, argv, data, NULL, NULL, NULL, NULL);
+  if (err)
+    log_error ("running '%s' failed: %s\n", pgmname, gpg_strerror (err));
+  return err;
+}
+
+
+/* Send the data in FP as mail.  */
+gpg_error_t
+send_mail (estream_t fp)
+{
+  return run_sendmail (fp);
+}
+
+
+/* Convenience function to write a mail to a named file. */
+gpg_error_t
+send_mail_to_file (estream_t fp, const char *fname)
+{
+  gpg_error_t err;
+  estream_t outfp = NULL;
+  char *buffer = NULL;
+  size_t buffersize = 32 * 1024;
+  size_t nbytes, nwritten;
+
+  if (!fname)
+    fname = "-";
+
+  buffer = xtrymalloc (buffersize);
+  if (!buffer)
+    return gpg_error_from_syserror ();
+
+  outfp = !strcmp (fname,"-")? es_stdout : es_fopen (fname, "wb");
+  if (!outfp)
+    {
+      err = gpg_error_from_syserror ();
+      log_error ("error creating '%s': %s\n", fname, gpg_strerror (err));
+      goto leave;
+    }
+  for (;;)
+    {
+      if (es_read (fp, buffer, sizeof buffer, &nbytes))
+        {
+          err = gpg_error_from_syserror ();
+          log_error ("error reading '%s': %s\n",
+                     es_fname_get (fp), gpg_strerror (err));
+          goto leave;
+        }
+
+      if (!nbytes)
+        {
+          err = 0;
+          break; /* Ready.  */
+        }
+
+      if (es_write (outfp, buffer, nbytes, &nwritten))
+        {
+          err = gpg_error_from_syserror ();
+          log_error ("error writing '%s': %s\n", fname, gpg_strerror (err));
+          goto leave;
+        }
+      else if (nwritten != nbytes)
+        {
+          err = gpg_error (GPG_ERR_EIO);
+          log_error ("error writing '%s': %s\n", fname, "short write");
+          goto leave;
+        }
+    }
+
+
+ leave:
+  if (err)
+    {
+      if (outfp && outfp != es_stdout)
+        {
+          es_fclose (outfp);
+          gnupg_remove (fname);
+        }
+    }
+  else if (outfp && outfp != es_stdout && es_fclose (outfp))
+    {
+      err = gpg_error_from_syserror ();
+      log_error ("error closing '%s': %s\n", fname, gpg_strerror (err));
+    }
+
+  xfree (buffer);
+  return err;
+}
-- 
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