code.delx.au - pulseaudio/blob - src/pulsecore/parseaddr.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as
  10   published by the Free Software Foundation; either version 2.1 of the
  11   License, or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public
  19   License along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <string.h>
  29 #include <stdlib.h>
  30
  31 #include <pulse/xmalloc.h>
  32 #include <pulse/util.h>
  33
  34 #include <pulsecore/core-util.h>
  35 #include <pulsecore/macro.h>
  36
  37 #include "parseaddr.h"
  38
  39 /* Parse addresses in one of the following forms:
  40  *    HOSTNAME
  41  *    HOSTNAME:PORT
  42  *    [HOSTNAME]
  43  *    [HOSTNAME]:PORT
  44  *
  45  *  Return a newly allocated string of the hostname and fill in *ret_port if specified  */
  46
  47 static char *parse_host(const char *s, uint16_t *ret_port) {
  48     pa_assert(s);
  49     pa_assert(ret_port);
  50
  51     if (*s == '[') {
  52         char *e;
  53         if (!(e = strchr(s+1, ']')))
  54             return NULL;
  55
  56         if (e[1] == ':')
  57             *ret_port = atoi(e+2);
  58         else if (e[1] != 0)
  59             return NULL;
  60
  61         return pa_xstrndup(s+1, e-s-1);
  62     } else {
  63         char *e;
  64
  65         if (!(e = strrchr(s, ':')))
  66             return pa_xstrdup(s);
  67
  68         *ret_port = atoi(e+1);
  69         return pa_xstrndup(s, e-s);
  70     }
  71 }
  72
  73 int pa_parse_address(const char *name, pa_parsed_address *ret_p) {
  74     const char *p;
  75
  76     pa_assert(name);
  77     pa_assert(ret_p);
  78
  79     memset(ret_p, 0, sizeof(pa_parsed_address));
  80     ret_p->type = PA_PARSED_ADDRESS_TCP_AUTO;
  81
  82     if (*name == '{') {
  83         char hn[256], *pfx;
  84         /* The URL starts with a host specification for detecting local connections */
  85
  86         if (!pa_get_host_name(hn, sizeof(hn)))
  87             return -1;
  88
  89         pfx = pa_sprintf_malloc("{%s}", hn);
  90         if (!pa_startswith(name, pfx)) {
  91             pa_xfree(pfx);
  92             /* Not local */
  93             return -1;
  94         }
  95
  96         p = name + strlen(pfx);
  97         pa_xfree(pfx);
  98     } else
  99         p = name;
 100
 101     if (*p == '/')
 102         ret_p->type = PA_PARSED_ADDRESS_UNIX;
 103     else if (pa_startswith(p, "unix:")) {
 104         ret_p->type = PA_PARSED_ADDRESS_UNIX;
 105         p += sizeof("unix:")-1;
 106     } else if (pa_startswith(p, "tcp:") || pa_startswith(p, "tcp4:")) {
 107         ret_p->type = PA_PARSED_ADDRESS_TCP4;
 108         p += sizeof("tcp:")-1;
 109     } else if (pa_startswith(p, "tcp6:")) {
 110         ret_p->type = PA_PARSED_ADDRESS_TCP6;
 111         p += sizeof("tcp6:")-1;
 112     }
 113
 114     if (ret_p->type == PA_PARSED_ADDRESS_UNIX)
 115         ret_p->path_or_host = pa_xstrdup(p);
 116     else
 117         if (!(ret_p->path_or_host = parse_host(p, &ret_p->port)))
 118             return -1;
 119
 120     return 0;
 121 }