client.c

   1 /*
   2  * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
   3  *
   4  *     This program is free software; you can redistribute it and/or modify
   5  *     it under the terms of the GNU General Public License as published by
   6  *     the Free Software Foundation; either version 2 of the License, or
   7  *     (at your option) any later version.
   8  *
   9  *     This program is distributed in the hope that it will be useful,
  10  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *     GNU General Public License for more details.
  13  *
  14  *     You should have received a copy of the GNU General Public License
  15  *     along with this program; if not, write to the Free Software
  16  *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  17  */
  18
  19 /** \file client.c the client program used to connect to para_server */
  20
  21 #include "para.h"
  22 #include "list.h"
  23 #include "sched.h"
  24 #include "client.cmdline.h"
  25 #include "string.h"
  26 #include "stdin.h"
  27 #include "stdout.h"
  28 #include "client.h"
  29 #include "error.h"
  30
  31 INIT_CLIENT_ERRLISTS;
  32
  33 static struct private_client_data *pcd;
  34 static struct stdin_task sit;
  35 static struct stdout_task sot;
  36
  37 /*
  38  * client log function
  39  */
  40 void para_log(int ll, const char* fmt,...)
  41 {
  42         va_list argp;
  43
  44         /* ignore log message if loglevel is not high enough */
  45         if (pcd && ll < pcd->conf.loglevel_arg)
  46                 return;
  47         va_start(argp, fmt);
  48         vfprintf(stderr, fmt, argp);
  49         va_end(argp);
  50 }
  51
  52 static void client_event_handler(struct task *t)
  53 {
  54         struct private_client_data *p = t->private_data;
  55
  56         PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
  57         if (t->ret != -E_HANDSHAKE_COMPLETE) {
  58                 unregister_task(t);
  59                 p->eof = 1;
  60                 return;
  61         }
  62         if (p->status == CL_SENDING) {
  63                 stdin_set_defaults(&sit);
  64                 sit.buf = para_malloc(sit.bufsize),
  65                 register_task(&sit.task);
  66                 p->inbuf = sit.buf;
  67                 p->in_loaded = &sit.loaded;
  68                 p->in_eof = &sit.eof;
  69                 return;
  70         }
  71         stdout_set_defaults(&sot);
  72         sot.buf = p->buf;
  73         sot.loaded = &p->loaded;
  74         sot.input_eof = &p->eof;
  75         register_task(&sot.task);
  76 }
  77
  78 /*
  79  * MAIN
  80  */
  81 int main(int argc, char *argv[])
  82 {
  83
  84         int ret;
  85         struct sched s;
  86
  87         s.default_timeout.tv_sec = 1;
  88         s.default_timeout.tv_usec = 0;
  89         ret = client_parse_config(argc, argv, &pcd);
  90         if (ret < 0)
  91                 goto out;
  92         pcd->task.event_handler = client_event_handler;
  93         ret = client_open(pcd);
  94         if (ret < 0)
  95                 goto out;
  96         ret = sched(&s);
  97         client_close(pcd);
  98 out:
  99         if (ret < 0)
 100                 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
 101         return ret >= 0? EXIT_SUCCESS: EXIT_FAILURE;
 102 }