util/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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19  * USA.
  20  */
  21
  22 /* Please note that this is a stripped down and modified version of
  23    the orginal Assuan code from libassuan. */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <signal.h>
  33 #include <unistd.h>
  34 #include <errno.h>
  35 #include <sys/types.h>
  36 #ifndef HAVE_W32_SYSTEM
  37 #include <sys/wait.h>
  38 #endif
  39
  40 #include "assuan-defs.h"
  41
  42 /* Create a new context.  */
  43 int
  44 _assuan_new_context (assuan_context_t *r_ctx)
  45 {
  46   assuan_context_t ctx;
  47
  48   *r_ctx = NULL;
  49   ctx = xcalloc (1, sizeof *ctx);
  50
  51   ctx->input_fd = -1;
  52   ctx->output_fd = -1;
  53
  54   ctx->inbound.fd = -1;
  55   ctx->outbound.fd = -1;
  56   ctx->io = NULL;
  57
  58   ctx->listen_fd = -1;
  59   *r_ctx = ctx;
  60   return 0;
  61 }
  62
  63
  64 void
  65 _assuan_release_context (assuan_context_t ctx)
  66 {
  67   if (ctx)
  68     {
  69       xfree (ctx->hello_line);
  70       xfree (ctx->okay_line);
  71       xfree (ctx);
  72     }
  73 }
  74
  75
  76 /* Disconnect and release the context CTX. */
  77 void
  78 assuan_disconnect (assuan_context_t ctx)
  79 {
  80   if (ctx)
  81     {
  82       assuan_write_line (ctx, "BYE");
  83       ctx->finish_handler (ctx);
  84       ctx->deinit_handler (ctx);
  85       ctx->deinit_handler = NULL;
  86       _assuan_release_context (ctx);
  87     }
  88 }
  89
  90 /* Return the PID of the peer or -1 if not known. */
  91 pid_t
  92 assuan_get_pid (assuan_context_t ctx)
  93 {
  94   return (ctx && ctx->pid)? ctx->pid : -1;
  95 }
  96