recv.c

   1 /*
   2  * Copyright (C) 2005-2006 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 #include "para.h"
  19
  20 #include "list.h"
  21 #include "sched.h"
  22 #include "recv.h"
  23 #include "recv.cmdline.h"
  24 #include "fd.h"
  25 #include "error.h"
  26 #include "stdout.h"
  27
  28 struct recv_args_info conf;
  29
  30 INIT_RECV_ERRLISTS;
  31
  32 __printf_2_3 void para_log(int ll, const char* fmt,...)
  33 {
  34         va_list argp;
  35
  36         /* ignore log message if loglevel is not high enough */
  37         if (ll < conf.loglevel_arg)
  38                 return;
  39         va_start(argp, fmt);
  40         vfprintf(stderr, fmt, argp);
  41         va_end(argp);
  42 }
  43
  44 static void *parse_config(int argc, char *argv[], int *receiver_num)
  45 {
  46         int i;
  47
  48         if (recv_cmdline_parser(argc, argv, &conf))
  49                 return NULL;
  50         if (conf.list_receivers_given) {
  51                 printf("available receivers: ");
  52                 for (i = 0; receivers[i].name; i++)
  53                         printf("%s%s", i? " " : "", receivers[i].name);
  54                 printf("\nTry\n\tpara_recv -r '<receivername> -h'\n"
  55                         "for help on <receivername>.\n");
  56                 exit(EXIT_SUCCESS);
  57         }
  58         return check_receiver_arg(conf.receiver_arg, receiver_num);
  59 }
  60
  61 void rn_event_handler(struct task *t)
  62 {
  63         struct receiver_node *rn = t->private_data;
  64         PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
  65         rn->eof = 1;
  66         unregister_task(t);
  67 }
  68
  69 int main(int argc, char *argv[])
  70 {
  71         int ret, r_opened = 0, receiver_num;
  72         struct  receiver *r = NULL;
  73         struct receiver_node rn;
  74         struct stdout_task sot;
  75         struct sched s;
  76
  77         s.default_timeout.tv_sec = 1;
  78         s.default_timeout.tv_usec = 0;
  79
  80         memset(&rn, 0, sizeof(struct receiver_node));
  81         for (ret = 0; receivers[ret].name; ret++)
  82                 receivers[ret].init(&receivers[ret]);
  83         ret = -E_RECV_SYNTAX;
  84         rn.conf = parse_config(argc, argv, &receiver_num);
  85         if (!rn.conf) {
  86                 PARA_EMERG_LOG("%s", "parse failed\n");
  87                 goto out;
  88         }
  89         r = &receivers[receiver_num];
  90         rn.receiver = r;
  91         ret = r->open(&rn);
  92         if (ret < 0)
  93                 goto out;
  94         r_opened = 1;
  95
  96         stdout_set_defaults(&sot);
  97         sot.buf = rn.buf;
  98         sot.loaded = &rn.loaded;
  99         sot.input_eof = &rn.eof;
 100         register_task(&sot.task);
 101
 102         rn.task.private_data = &rn;
 103         rn.task.pre_select = r->pre_select;
 104         rn.task.post_select = r->post_select;
 105         rn.task.event_handler = rn_event_handler;
 106         sprintf(rn.task.status, "receiver node");
 107         register_task(&rn.task);
 108
 109
 110         ret = sched(&s);
 111 out:
 112         if (r_opened)
 113                 r->close(&rn);
 114         if (r)
 115                 r->shutdown();
 116         if (ret < 0)
 117                 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
 118         return ret;
 119 }