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 <polyp/xmalloc.h>
  31
  32 #include <polyp/util.h>
  33 #include <polypcore/core-util.h>
  34
  35 #include "parseaddr.h"
  36
  37 /* Parse addresses in one of the following forms:
  38  *    HOSTNAME
  39  *    HOSTNAME:PORT
  40  *    [HOSTNAME]
  41  *    [HOSTNAME]:PORT
  42  *
  43  *  Return a newly allocated string of the hostname and fill in *ret_port if specified  */
  44
  45 static char *parse_host(const char *s, uint16_t *ret_port) {
  46     assert(s && ret_port);
  47     if (*s == '[') {
  48         char *e;
  49         if (!(e = strchr(s+1, ']')))
  50             return NULL;
  51
  52         if (e[1] == ':')
  53             *ret_port = atoi(e+2);
  54         else if (e[1] != 0)
  55             return NULL;
  56
  57         return pa_xstrndup(s+1, e-s-1);
  58     } else {
  59         char *e;
  60
  61         if (!(e = strrchr(s, ':')))
  62             return pa_xstrdup(s);
  63
  64         *ret_port = atoi(e+1);
  65         return pa_xstrndup(s, e-s);
  66     }
  67 }
  68
  69 int pa_parse_address(const char *name, pa_parsed_address *ret_p) {
  70     const char *p;
  71     assert(name && ret_p);
  72     memset(ret_p, 0, sizeof(pa_parsed_address));
  73     ret_p->type = PA_PARSED_ADDRESS_TCP_AUTO;
  74
  75     if (*name == '{') {
  76         char hn[256], *pfx;
  77         /* The URL starts with a host specification for detecting local connections */
  78
  79         if (!pa_get_host_name(hn, sizeof(hn)))
  80             return -1;
  81
  82         pfx = pa_sprintf_malloc("{%s}", hn);
  83         if (!pa_startswith(name, pfx)) {
  84             pa_xfree(pfx);
  85             /* Not local */
  86             return -1;
  87         }
  88
  89         p = name + strlen(pfx);
  90         pa_xfree(pfx);
  91     } else
  92         p = name;
  93
  94     if (*p == '/')
  95         ret_p->type = PA_PARSED_ADDRESS_UNIX;
  96     else if (pa_startswith(p, "unix:")) {
  97         ret_p->type = PA_PARSED_ADDRESS_UNIX;
  98         p += sizeof("unix:")-1;
  99     } else if (pa_startswith(p, "tcp:") || pa_startswith(p, "tcp4:")) {
 100         ret_p->type = PA_PARSED_ADDRESS_TCP4;
 101         p += sizeof("tcp:")-1;
 102     } else if (pa_startswith(p, "tcp6:")) {
 103         ret_p->type = PA_PARSED_ADDRESS_TCP6;
 104         p += sizeof("tcp6:")-1;
 105     }
 106
 107     if (ret_p->type == PA_PARSED_ADDRESS_UNIX)
 108         ret_p->path_or_host = pa_xstrdup(p);
 109     else
 110         if (!(ret_p->path_or_host = parse_host(p, &ret_p->port)))
 111             return -1;
 112
 113
 114     return 0;
 115 }