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#include <config.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <glib/gthread.h>
#include <glib/gi18n.h>
#include "gvfsdaemonutils.h"
#include "gvfsdaemonprotocol.h"
static gint32 extra_fd_slot = -1;
static GStaticMutex extra_lock = G_STATIC_MUTEX_INIT;
typedef struct {
int extra_fd;
int fd_count;
} ConnectionExtra;
/* We use _ for escaping, so its not valid */
#define VALID_INITIAL_NAME_CHARACTER(c) \
( ((c) >= 'A' && (c) <= 'Z') || \
((c) >= 'a' && (c) <= 'z') )
#define VALID_NAME_CHARACTER(c) \
( ((c) >= '0' && (c) <= '9') || \
((c) >= 'A' && (c) <= 'Z') || \
((c) >= 'a' && (c) <= 'z'))
static void
append_escaped_name (GString *s,
const char *unescaped)
{
char c;
gboolean first;
static const gchar hex[16] = "0123456789ABCDEF";
while ((c = *unescaped++) != 0)
{
if (first)
{
if (VALID_INITIAL_NAME_CHARACTER (c))
{
g_string_append_c (s, c);
continue;
}
}
else
{
if (VALID_NAME_CHARACTER (c))
{
g_string_append_c (s, c);
continue;
}
}
first = FALSE;
g_string_append_c (s, '_');
g_string_append_c (s, hex[((guchar)c) >> 4]);
g_string_append_c (s, hex[((guchar)c) & 0xf]);
}
}
DBusMessage *
dbus_message_new_error_from_gerror (DBusMessage *message,
GError *error)
{
DBusMessage *reply;
GString *str;
str = g_string_new ("org.glib.GError.");
append_escaped_name (str, g_quark_to_string (error->domain));
g_string_append_printf (str, ".c%d", error->code);
reply = dbus_message_new_error (message, str->str, error->message);
g_string_free (str, TRUE);
return reply;
}
static void
free_extra (gpointer p)
{
ConnectionExtra *extra = p;
close (extra->extra_fd);
g_free (extra);
}
void
dbus_connection_add_fd_send_fd (DBusConnection *connection,
int extra_fd)
{
ConnectionExtra *extra;
if (extra_fd_slot == -1 &&
!dbus_connection_allocate_data_slot (&extra_fd_slot))
g_error ("Unable to allocate data slot");
extra = g_new0 (ConnectionExtra, 1);
extra->extra_fd = extra_fd;
if (!dbus_connection_set_data (connection, extra_fd_slot, extra, free_extra))
g_error ("Out of memory");
}
static int
send_fd (int connection_fd,
int fd)
{
struct msghdr msg;
struct iovec vec;
char buf[1] = {'x'};
char ccmsg[CMSG_SPACE (sizeof (fd))];
struct cmsghdr *cmsg;
int ret;
msg.msg_name = NULL;
msg.msg_namelen = 0;
vec.iov_base = buf;
vec.iov_len = 1;
msg.msg_iov = &vec;
msg.msg_iovlen = 1;
msg.msg_control = ccmsg;
msg.msg_controllen = sizeof (ccmsg);
cmsg = CMSG_FIRSTHDR (&msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN (sizeof(fd));
*(int*)CMSG_DATA (cmsg) = fd;
msg.msg_controllen = cmsg->cmsg_len;
msg.msg_flags = 0;
ret = sendmsg (connection_fd, &msg, 0);
g_print ("sendmesg ret: %d\n", ret);
return ret;
}
gboolean
dbus_connection_send_fd (DBusConnection *connection,
int fd,
int *fd_id,
GError **error)
{
ConnectionExtra *extra;
g_assert (extra_fd_slot != -1);
extra = dbus_connection_get_data (connection, extra_fd_slot);
g_assert (extra != NULL);
if (extra->extra_fd == -1)
{
g_set_error (error, G_FILE_ERROR,
G_FILE_ERROR_IO,
_("No fd passing socket availible"));
return FALSE;
}
g_static_mutex_lock (&extra_lock);
if (send_fd (extra->extra_fd, fd) == -1)
{
g_set_error (error, G_FILE_ERROR,
g_file_error_from_errno (errno),
_("Error sending fd: %s"),
g_strerror (errno));
g_static_mutex_unlock (&extra_lock);
return FALSE;
}
*fd_id = extra->fd_count++;
g_static_mutex_unlock (&extra_lock);
return TRUE;
}
char *
g_error_to_daemon_reply (GError *error, guint32 seq_nr, gsize *len_out)
{
char *buffer;
const char *domain;
gsize domain_len, message_len;
GVfsDaemonSocketProtocolReply *reply;
gsize len;
domain = g_quark_to_string (error->domain);
domain_len = strlen (domain);
message_len = strlen (error->message);
len = G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_SIZE +
domain_len + 1 + message_len + 1;
buffer = g_malloc (len);
reply = (GVfsDaemonSocketProtocolReply *)buffer;
reply->type = g_htonl (G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_ERROR);
reply->seq_nr = g_htonl (seq_nr);
reply->arg1 = g_htonl (error->code);
reply->arg2 = g_htonl (domain_len + 1 + message_len + 1);
memcpy (buffer + G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_SIZE,
domain, domain_len + 1);
memcpy (buffer + G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_SIZE + domain_len + 1,
error->message, message_len + 1);
*len_out = len;
return buffer;
}
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