src/conn.c

   1 /*
   2  * state-utils
   3  * (c) 2005 by Avuton Olrich <avuton@gmail.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  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  02111-1307  USA
  17  *
  18  */
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23
  24 #include "libmpdclient.h"
  25 #include "conn.h"
  26
  27 #define DEFAULT_HOST "localhost"
  28 #define DEFAULT_PORT "6600"
  29 #define MPD_TIMEOUT 60
  30
  31 /* stolen from mpc */
  32 static void parse_password(const char *host, int *password_len, int *parsed_len)
  33 {
  34         /* parse password and host */
  35         char *ret = strstr(host, "@");
  36         int len = ret - host;
  37
  38         if (ret && len == 0) {
  39                 parsed_len++;
  40         } else if (ret) {
  41                 *password_len = len;
  42                 *parsed_len += len + 1;
  43         }
  44 }
  45
  46 /* stolen from mpc */
  47 void printErrorAndExit(mpd_Connection * conn)
  48 {
  49         if (conn->error) {
  50                 fprintf(stderr, "error: %s\n", conn->errorStr);
  51                 exit(EXIT_FAILURE);
  52         }
  53 }
  54
  55 /* stolen from mpc */
  56 static void send_password(char *host, int password_len, mpd_Connection * conn)
  57 {
  58         host[password_len] = '\0';
  59
  60         mpd_sendPasswordCommand(conn, host);
  61         printErrorAndExit(conn);
  62         mpd_finishCommand(conn);
  63         printErrorAndExit(conn);
  64 }
  65
  66 mpd_Connection *setup_connection()
  67 {
  68         char *host = NULL;
  69         char *port = NULL;
  70         int iport;
  71         char *test;
  72         int password_len = 0;
  73         int parsed_len = 0;
  74         mpd_Connection *conn;
  75
  76         if ((test = getenv("MPD_HOST")) && test) {
  77                 host = test;
  78         } else {
  79                 host = DEFAULT_HOST;
  80         }
  81
  82         if ((test = getenv("MPD_PORT")) && test) {
  83                 port = test;
  84         } else {
  85                 port = DEFAULT_PORT;
  86         }
  87
  88         iport = strtol(port, &test, 10);
  89
  90         if (iport <= 0 || *test != '\0') {
  91                 fprintf(stderr, "MPD_PORT \"%s\" is not a positive integer\n",
  92                         port);
  93                 exit(EXIT_FAILURE);
  94         }
  95
  96         parse_password(host, &password_len, &parsed_len);
  97
  98         conn = mpd_newConnection(host + parsed_len, iport, MPD_TIMEOUT);
  99
 100         printErrorAndExit(conn);
 101
 102         if (password_len) {
 103                 send_password(host, password_len, conn);
 104         }
 105
 106         return conn;
 107 }