X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=src%2Fnattribute.c;fp=src%2Fnattribute.c;h=15c78a42d476f5e654dab99f7cbed3cbd5a00461;hb=3b34449070c0846fdc49436d1edd5916512f1644;hp=0000000000000000000000000000000000000000;hpb=7370d748ee384dd549f2947c60ebc9a647907d06;p=util-vserver.git

diff --git a/src/nattribute.c b/src/nattribute.c
new file mode 100644
index 0000000..15c78a4
--- /dev/null
+++ b/src/nattribute.c
@@ -0,0 +1,179 @@
+// $Id: nattribute.c 2403 2006-11-24 23:06:08Z dhozac $    --*- c -*--
+
+// Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+// Copyright (C) 2006 Daniel Hokka Zakrisson
+//  
+// This program 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; version 2 of the License.
+//  
+// This program 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, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include "util.h"
+#include <lib/vserver.h>
+
+#include <getopt.h>
+#include <stdint.h>
+#include <errno.h>
+
+#define ENSC_WRAPPERS_PREFIX	"nattribute: "
+#define ENSC_WRAPPERS_VSERVER	1
+#define ENSC_WRAPPERS_UNISTD	1
+#include <wrappers.h>
+
+#define CMD_HELP		0x1000
+#define CMD_VERSION		0x1001
+#define CMD_NID			0x2000
+#define CMD_SET			0x2001
+#define CMD_CAP			0x2002
+#define CMD_FLAG		0x2003
+#define CMD_SECURE		0x2004
+
+int			wrapper_exit_code = 1;
+
+struct option const
+CMDLINE_OPTIONS[] = {
+  { "help",       no_argument,       0, CMD_HELP },
+  { "version",    no_argument,       0, CMD_VERSION },
+  { "nid",        required_argument, 0, CMD_NID },
+  { "set",        no_argument,       0, CMD_SET },
+  { "ncap",       required_argument, 0, CMD_CAP },
+  { "flag",       required_argument, 0, CMD_FLAG },
+  { "secure",     no_argument,       0, CMD_SECURE },
+  {0,0,0,0}
+};
+
+struct Arguments {
+    nid_t		nid;
+    struct vc_net_flags flags;
+    struct vc_net_caps  caps;
+};
+
+static void
+showHelp(int fd, char const *cmd, int res)
+{
+  WRITE_MSG(fd, "Usage:\n    ");
+  WRITE_STR(fd, cmd);
+  WRITE_MSG(fd,
+	    " --set [--nid <nid>] [--ncap [~!]<ncap>] [--flag [~!]<flag>] [--secure] -- [<program> <args>*]\n"
+	    "\n"
+	    " --ncap <cap>   ...  network capability to be added\n"
+	    " --flag <flag>  ...  network flag to be added\n"
+	    "\n"
+	    "Please report bugs to " PACKAGE_BUGREPORT "\n");
+
+  exit(res);
+}
+
+static void
+showVersion()
+{
+  WRITE_MSG(1,
+	    "nattribute " VERSION " -- sets attributes of network contexts\n"
+	    "This program is part of " PACKAGE_STRING "\n\n"
+	    "Copyright (C) 2004 Enrico Scholz\n"
+	    "Copyright (C) 2006 Daniel Hokka Zakrisson\n"
+	    VERSION_COPYRIGHT_DISCLAIMER);
+  exit(0);
+}
+
+static void
+parseFlags(char const *str, struct vc_net_flags *flags)
+{
+  struct vc_err_listparser	err;
+  int				rc;
+
+  rc = vc_list2nflag(str, 0, &err, flags);
+  
+  if (rc==-1) {
+    WRITE_MSG(2, "Unknown flag '");
+    Vwrite(2, err.ptr, err.len);
+    WRITE_MSG(2, "'\n");
+    exit(wrapper_exit_code);
+  }
+}
+
+static void
+parseNCaps(char const *str, struct vc_net_caps *caps)
+{
+  struct vc_err_listparser	err;
+  int				rc;
+
+  rc = vc_list2ncap(str,0, &err, caps);
+  
+  if (rc==-1) {
+    WRITE_MSG(2, "Unknown ncap '");
+    Vwrite(2, err.ptr, err.len);
+    WRITE_MSG(2, "'\n");
+    exit(wrapper_exit_code);
+  }
+}
+
+static void
+parseSecure(struct vc_net_flags * flags,
+	    struct vc_net_caps  * caps)
+{
+    // TODO: generalize this
+  caps->ncaps = 0ull;
+  caps->cmask = 0ull;
+
+  flags->flagword = VC_NXF_HIDE_NETIF;
+  flags->mask     = VC_NXF_HIDE_NETIF;
+}
+
+int main(int argc, char *argv[])
+{
+  struct Arguments		args = {
+    .nid   = VC_NOCTX,
+    .flags = { .flagword = 0, .mask = 0 },
+    .caps  = { .ncaps = 0, .cmask = 0 },
+  };
+  
+  while (1) {
+    int		c = getopt_long(argc, argv, "+", CMDLINE_OPTIONS, 0);
+    if (c==-1) break;
+
+    switch (c) {
+      case CMD_HELP	:  showHelp(1, argv[0], 0);
+      case CMD_VERSION	:  showVersion();
+      case CMD_SET	:  break; // default op currently
+      case CMD_NID	:  args.nid = Evc_nidopt2nid(optarg,true); break;
+      case CMD_FLAG	:  parseFlags(optarg, &args.flags);        break;
+      case CMD_CAP	:  parseNCaps(optarg, &args.caps);         break;
+      case CMD_SECURE	:  parseSecure(&args.flags, &args.caps);   break;
+      default		:
+	WRITE_MSG(2, "Try '");
+	WRITE_STR(2, argv[0]);
+	WRITE_MSG(2, " --help' for more information.\n");
+	return 255;
+	break;
+    }
+  }
+
+  if (args.nid==VC_NOCTX) args.nid = Evc_get_task_nid(0);
+
+  if (args.caps.cmask &&
+      vc_set_ncaps(args.nid, &args.caps)==-1)
+    perror(ENSC_WRAPPERS_PREFIX "vc_set_ncaps()");
+  else if (args.flags.mask &&
+	   vc_set_nflags(args.nid, &args.flags)==-1)
+    perror(ENSC_WRAPPERS_PREFIX "vc_set_nflags()");
+  else if (optind<argc)
+    EexecvpD(argv[optind], argv+optind);
+  else
+    return EXIT_SUCCESS;
+
+  return EXIT_FAILURE;
+}