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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5
   6   PulseAudio 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   PulseAudio 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 PulseAudio; 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 <stdlib.h>
  28
  29 #include <pulse/xmalloc.h>
  30 #include <pulse/util.h>
  31
  32 #include <pulsecore/core-util.h>
  33 #include <pulsecore/macro.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     pa_assert(s);
  47     pa_assert(ret_port);
  48
  49     if (*s == '[') {
  50         char *e;
  51         if (!(e = strchr(s+1, ']')))
  52             return NULL;
  53
  54         if (e[1] == ':')
  55             *ret_port = atoi(e+2);
  56         else if (e[1] != 0)
  57             return NULL;
  58
  59         return pa_xstrndup(s+1, e-s-1);
  60     } else {
  61         char *e;
  62
  63         if (!(e = strrchr(s, ':')))
  64             return pa_xstrdup(s);
  65
  66         *ret_port = atoi(e+1);
  67         return pa_xstrndup(s, e-s);
  68     }
  69 }
  70
  71 int pa_parse_address(const char *name, pa_parsed_address *ret_p) {
  72     const char *p;
  73
  74     pa_assert(name);
  75     pa_assert(ret_p);
  76
  77     memset(ret_p, 0, sizeof(pa_parsed_address));
  78     ret_p->type = PA_PARSED_ADDRESS_TCP_AUTO;
  79
  80     if (*name == '{') {
  81         char hn[256], *pfx;
  82         /* The URL starts with a host specification for detecting local connections */
  83
  84         if (!pa_get_host_name(hn, sizeof(hn)))
  85             return -1;
  86
  87         pfx = pa_sprintf_malloc("{%s}", hn);
  88         if (!pa_startswith(name, pfx)) {
  89             pa_xfree(pfx);
  90             /* Not local */
  91             return -1;
  92         }
  93
  94         p = name + strlen(pfx);
  95         pa_xfree(pfx);
  96     } else
  97         p = name;
  98
  99     if (*p == '/')
 100         ret_p->type = PA_PARSED_ADDRESS_UNIX;
 101     else if (pa_startswith(p, "unix:")) {
 102         ret_p->type = PA_PARSED_ADDRESS_UNIX;
 103         p += sizeof("unix:")-1;
 104     } else if (pa_startswith(p, "tcp:")) {
 105         ret_p->type = PA_PARSED_ADDRESS_TCP4;
 106         p += sizeof("tcp:")-1;
 107     } else if (pa_startswith(p, "tcp4:")) {
 108         ret_p->type = PA_PARSED_ADDRESS_TCP4;
 109         p += sizeof("tcp4:")-1;
 110     } else if (pa_startswith(p, "tcp6:")) {
 111         ret_p->type = PA_PARSED_ADDRESS_TCP6;
 112         p += sizeof("tcp6:")-1;
 113     }
 114
 115     if (ret_p->type == PA_PARSED_ADDRESS_UNIX)
 116         ret_p->path_or_host = pa_xstrdup(p);
 117     else
 118         if (!(ret_p->path_or_host = parse_host(p, &ret_p->port)))
 119             return -1;
 120
 121     return 0;
 122 }