mirror of git://git.gnupg.org/gnupg.git
141 lines
3.3 KiB
C
141 lines
3.3 KiB
C
/* send-mail.c - Invoke sendmail or other delivery tool.
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* Copyright (C) 2016 g10 Code GmbH
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* Copyright (C) 2016 Bundesamt für Sicherheit in der Informationstechnik
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*
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* This file is part of GnuPG.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../common/util.h"
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#include "../common/exectool.h"
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#include "../common/sysutils.h"
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#include "send-mail.h"
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static gpg_error_t
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run_sendmail (estream_t data)
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{
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gpg_error_t err;
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const char pgmname[] = "/usr/lib/sendmail";
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const char *argv[3];
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argv[0] = "-oi";
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argv[1] = "-t";
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argv[2] = NULL;
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err = gnupg_exec_tool_stream (pgmname, argv, data, NULL, NULL, NULL, NULL);
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if (err)
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log_error ("running '%s' failed: %s\n", pgmname, gpg_strerror (err));
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return err;
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}
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/* Send the data in FP as mail. */
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gpg_error_t
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send_mail (estream_t fp)
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{
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return run_sendmail (fp);
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}
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/* Convenience function to write a mail to a named file. */
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gpg_error_t
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send_mail_to_file (estream_t fp, const char *fname)
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{
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gpg_error_t err;
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estream_t outfp = NULL;
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char *buffer = NULL;
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size_t buffersize = 32 * 1024;
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size_t nbytes, nwritten;
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if (!fname)
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fname = "-";
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buffer = xtrymalloc (buffersize);
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if (!buffer)
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return gpg_error_from_syserror ();
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if (!strcmp (fname,"-"))
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{
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outfp = es_stdout;
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es_set_binary (es_stdout);
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}
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else
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{
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outfp = es_fopen (fname, "wb");
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if (!outfp)
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{
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err = gpg_error_from_syserror ();
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log_error ("error creating '%s': %s\n", fname, gpg_strerror (err));
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goto leave;
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}
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}
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for (;;)
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{
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if (es_read (fp, buffer, sizeof buffer, &nbytes))
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{
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err = gpg_error_from_syserror ();
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log_error ("error reading '%s': %s\n",
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es_fname_get (fp), gpg_strerror (err));
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goto leave;
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}
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if (!nbytes)
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{
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err = 0;
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break; /* Ready. */
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}
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if (es_write (outfp, buffer, nbytes, &nwritten))
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{
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err = gpg_error_from_syserror ();
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log_error ("error writing '%s': %s\n", fname, gpg_strerror (err));
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goto leave;
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}
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else if (nwritten != nbytes)
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{
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err = gpg_error (GPG_ERR_EIO);
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log_error ("error writing '%s': %s\n", fname, "short write");
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goto leave;
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}
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}
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leave:
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if (err)
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{
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if (outfp && outfp != es_stdout)
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{
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es_fclose (outfp);
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gnupg_remove (fname);
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}
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}
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else if (outfp && outfp != es_stdout && es_fclose (outfp))
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{
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err = gpg_error_from_syserror ();
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log_error ("error closing '%s': %s\n", fname, gpg_strerror (err));
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}
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xfree (buffer);
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return err;
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}
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