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

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