assuan/assuan-connect.c

   1 /* assuan-connect.c - Establish a connection (client)
   2  *      Copyright (C) 2001, 2002 Free Software Foundation, Inc.
   3  *
   4  * This file is part of Assuan.
   5  *
   6  * Assuan is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as
   8  * published by the Free Software Foundation; either version 2.1 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * Assuan is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <signal.h>
  28 #include <unistd.h>
  29 #include <errno.h>
  30 #include <sys/types.h>
  31 #ifndef HAVE_W32_SYSTEM
  32 #include <sys/wait.h>
  33 #endif
  34
  35 #include "assuan-defs.h"
  36
  37 /* Disconnect and release the context CTX. */
  38 void
  39 assuan_disconnect (assuan_context_t ctx)
  40 {
  41   if (ctx)
  42     {
  43       assuan_write_line (ctx, "BYE");
  44       if (ctx->user_finish_handler)
  45           ctx->user_finish_handler(ctx);
  46       ctx->finish_handler (ctx);
  47       ctx->deinit_handler (ctx);
  48       ctx->deinit_handler = NULL;
  49       _assuan_release_context (ctx);
  50     }
  51 }
  52
  53 /* Return the PID of the peer or -1 if not known. This function works
  54    in some situations where assuan_get_ucred fails. */
  55 pid_t
  56 assuan_get_pid (assuan_context_t ctx)
  57 {
  58   return (ctx && ctx->pid)? ctx->pid : -1;
  59 }
  60
  61
  62 #ifndef HAVE_W32_SYSTEM
  63 /* Return user credentials. PID, UID and GID amy be gived as NULL if
  64    you are not interested in this value.  For getting the pid of the
  65    peer the assuan_get_pid is usually better suited. */
  66 assuan_error_t
  67 assuan_get_peercred (assuan_context_t ctx, pid_t *pid, uid_t *uid, gid_t *gid)
  68 {
  69   if (!ctx)
  70     return _assuan_error (ASSUAN_Invalid_Value);
  71   if (!ctx->peercred.valid)
  72     return _assuan_error (ASSUAN_General_Error);
  73
  74 #ifdef HAVE_SO_PEERCRED
  75   if (pid)
  76     *pid = ctx->peercred.pid;
  77   if (uid)
  78     *uid = ctx->peercred.uid;
  79   if (gid)
  80     *gid = ctx->peercred.gid;
  81 #endif
  82
  83   return 0;
  84 }
  85 #endif /* HAVE_W32_SYSTEM */