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 #include <arpa/inet.h>
  29 #include <sys/socket.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             uint32_t p;
  58
  59             if (pa_atou(e+2, &p) < 0)
  60                 return NULL;
  61
  62             *ret_port = (uint16_t) p;
  63         } else if (e[1] != 0)
  64             return NULL;
  65
  66         return pa_xstrndup(s+1, (size_t) (e-s-1));
  67     } else {
  68         char *e;
  69         uint32_t p;
  70
  71         if (!(e = strrchr(s, ':')))
  72             return pa_xstrdup(s);
  73
  74         if (pa_atou(e+1, &p) < 0)
  75             return NULL;
  76
  77         *ret_port = (uint16_t) p;
  78         return pa_xstrndup(s, (size_t) (e-s));
  79     }
  80 }
  81
  82 int pa_parse_address(const char *name, pa_parsed_address *ret_p) {
  83     const char *p;
  84
  85     pa_assert(name);
  86     pa_assert(ret_p);
  87
  88     memset(ret_p, 0, sizeof(pa_parsed_address));
  89     ret_p->type = PA_PARSED_ADDRESS_TCP_AUTO;
  90
  91     if (*name == '{') {
  92         char *id, *pfx;
  93
  94         /* The URL starts with a host id for detecting local connections */
  95         if (!(id = pa_machine_id()))
  96             return -1;
  97
  98         pfx = pa_sprintf_malloc("{%s}", id);
  99         pa_xfree(id);
 100
 101         if (!pa_startswith(name, pfx)) {
 102             pa_xfree(pfx);
 103             /* Not local */
 104             return -1;
 105         }
 106
 107         p = name + strlen(pfx);
 108         pa_xfree(pfx);
 109     } else
 110         p = name;
 111
 112     if (*p == '/')
 113         ret_p->type = PA_PARSED_ADDRESS_UNIX;
 114     else if (pa_startswith(p, "unix:")) {
 115         ret_p->type = PA_PARSED_ADDRESS_UNIX;
 116         p += sizeof("unix:")-1;
 117     } else if (pa_startswith(p, "tcp:")) {
 118         ret_p->type = PA_PARSED_ADDRESS_TCP4;
 119         p += sizeof("tcp:")-1;
 120     } else if (pa_startswith(p, "tcp4:")) {
 121         ret_p->type = PA_PARSED_ADDRESS_TCP4;
 122         p += sizeof("tcp4:")-1;
 123     } else if (pa_startswith(p, "tcp6:")) {
 124         ret_p->type = PA_PARSED_ADDRESS_TCP6;
 125         p += sizeof("tcp6:")-1;
 126     }
 127
 128     if (ret_p->type == PA_PARSED_ADDRESS_UNIX)
 129         ret_p->path_or_host = pa_xstrdup(p);
 130     else
 131         if (!(ret_p->path_or_host = parse_host(p, &ret_p->port)))
 132             return -1;
 133
 134     return 0;
 135 }
 136
 137 pa_bool_t pa_is_ip_address(const char *a) {
 138     char buf[INET6_ADDRSTRLEN];
 139
 140     pa_assert(a);
 141
 142     if (inet_pton(AF_INET6, a, buf) >= 1)
 143         return TRUE;
 144
 145     if (inet_pton(AF_INET, a, buf) >= 1)
 146         return TRUE;
 147
 148     return FALSE;
 149 }