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-rw-r--r--libmailutils/socket_stream.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/libmailutils/socket_stream.c b/libmailutils/socket_stream.c
new file mode 100644
index 000000000..2764b2b25
--- /dev/null
+++ b/libmailutils/socket_stream.c
@@ -0,0 +1,122 @@
+/* GNU Mailutils -- a suite of utilities for electronic mail
+ Copyright (C) 1999, 2000, 2001, 2002, 2004,
+ 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+
+ GNU Mailutils 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, or (at your option)
+ any later version.
+
+ GNU Mailutils 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 GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <mailutils/types.h>
+#include <mailutils/alloc.h>
+#include <mailutils/error.h>
+#include <mailutils/errno.h>
+#include <mailutils/nls.h>
+#include <mailutils/stream.h>
+#include <mailutils/sys/file_stream.h>
+
+static int
+_socket_open (mu_stream_t stream)
+{
+ struct _mu_file_stream *s = (struct _mu_file_stream *) stream;
+ int fd;
+ struct sockaddr_un addr;
+
+ if (!s)
+ return EINVAL;
+
+ fd = socket (PF_UNIX, SOCK_STREAM, 0);
+ if (fd < 0)
+ return errno;
+
+ memset (&addr, 0, sizeof addr);
+ addr.sun_family = AF_UNIX;
+ strncpy (addr.sun_path, s->filename, sizeof addr.sun_path - 1);
+ addr.sun_path[sizeof addr.sun_path - 1] = 0;
+ if (connect (fd, (struct sockaddr *) &addr, sizeof(addr)))
+ {
+ close (fd);
+ return errno;
+ }
+
+ s->fd = fd;
+
+ return 0;
+}
+
+int
+_socket_shutdown (mu_stream_t stream, int how)
+{
+ struct _mu_file_stream *s = (struct _mu_file_stream *) stream;
+ int flag;
+
+ switch (how)
+ {
+ case MU_STREAM_READ:
+ flag = SHUT_RD;
+ break;
+
+ case MU_STREAM_WRITE:
+ flag = SHUT_WR;
+ }
+
+ if (shutdown (s->fd, flag))
+ return errno;
+ return 0;
+}
+
+int
+mu_socket_stream_create (mu_stream_t *pstream, const char *filename, int flags)
+{
+ int rc;
+ mu_stream_t transport;
+ int need_cache;
+ struct _mu_file_stream *fstr;
+
+ need_cache = flags & MU_STREAM_SEEK;
+ if (need_cache && (flags & MU_STREAM_WRITE))
+ /* Write caches are not supported */
+ return EINVAL;
+
+ /* Create transport stream. */
+ rc = _mu_file_stream_create (&fstr, sizeof (*fstr),
+ filename, -1,
+ (flags | MU_STREAM_AUTOCLOSE) & ~MU_STREAM_SEEK);
+ if (rc)
+ return rc;
+ fstr->stream.open = _socket_open;
+ fstr->stream.shutdown = _socket_shutdown;
+ transport = (mu_stream_t) fstr;
+
+ /* Wrap it in cache, if required */
+ if (need_cache)
+ {
+ mu_stream_t str;
+ rc = mu_rdcache_stream_create (&str, transport, flags);
+ mu_stream_unref (transport);
+ if (rc)
+ return rc;
+ transport = str;
+ }
+
+ *pstream = transport;
+ return 0;
+}

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