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 mpd_Connection *setup_connection(char * host, char * port)
  56 {
  57         int iport;
  58         char *test;
  59         int password_len = 0;
  60         int parsed_len = 0;
  61         mpd_Connection *conn;
  62
  63         if(!host || strlen(host)<1) {
  64                 if ((test = getenv("MPD_HOST")) && test) {
  65                         host = test;
  66                 } else {
  67                         host = DEFAULT_HOST;
  68                 }
  69         }
  70
  71         if(!port || strlen(port)<1) {
  72                 if ((test = getenv("MPD_PORT")) && test) {
  73                         port = test;
  74                 } else {
  75                         port = DEFAULT_PORT;
  76                 }
  77         }
  78
  79         iport = strtol(port, &test, 10);
  80
  81         if (iport <= 0 || *test != '\0') {
  82                 fprintf(stderr,
  83                         "MPD_PORT \"%s\" is not a positive integer\n", port);
  84                 exit(EXIT_FAILURE);
  85         }
  86
  87         parse_password(host, &password_len, &parsed_len);
  88
  89         conn = mpd_newConnection(host + parsed_len, iport, (float)MPD_TIMEOUT);
  90
  91         printErrorAndExit(conn);
  92
  93         if (password_len) {
  94                 mpd_sendPasswordCommand(conn, &host[password_len]);
  95                 printErrorAndExit(conn);
  96                 mpd_finishCommand(conn);
  97                 printErrorAndExit(conn);
  98         }
  99
 100         return conn;
 101 }