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util: Add API to check address family of IP address

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This commit is contained in:
Evangelos Ribeiro Tzaras 2022-10-09 11:57:00 +02:00
parent 29a2059e0e
commit 1deee0b71b
3 changed files with 78 additions and 0 deletions
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51
src/util.c
View file

@ -24,6 +24,8 @@
#include "util.h"
#include <sys/socket.h>
#include <netdb.h>
gboolean
@ -225,3 +227,52 @@ get_call_icon_symbolic_name (gboolean inbound,
return type_icon_name[index];
}
/**
* get_address_family_for_ip:
* @ip: The IP address to check
* @only_configured_interfaces: Only consider address families of configured
* network interfaces
*
* Returns: #AF_INET for IPv4, #AF_INET6 for IPv6 and #AF_UNSPEC otherwise.
* If @only_configured_interfaces is #TRUE and the resulting address family of @ip
* is not configured on any network interface, it will also return #AF_UNSPEC
*/
int
get_address_family_for_ip (const char *ip,
gboolean only_configured_interfaces)
{
struct addrinfo hints = { 0 };
struct addrinfo *result;
int family = AF_UNSPEC;
int res_gai;
g_return_val_if_fail (!STR_IS_NULL_OR_EMPTY (ip), AF_UNSPEC);
hints.ai_flags = AI_V4MAPPED | AI_NUMERICHOST;
if (only_configured_interfaces)
hints.ai_flags |= AI_ADDRCONFIG;
hints.ai_family = AF_UNSPEC;
res_gai = getaddrinfo (ip, NULL, &hints, &result);
if (res_gai != 0) {
g_info ("Cannot get address information for host %s: %s",
ip,
gai_strerror (res_gai));
return AF_UNSPEC;
}
family = result->ai_family;
freeaddrinfo (result);
if (family != AF_INET && family != AF_INET6) {
g_warning ("Address information for host %s indicates non internet host", ip);
return AF_UNSPEC;
}
return family;
}

2
src/util.h
View file

@ -129,5 +129,7 @@ const char *get_protocol_from_address_with_fallback (const char *target);
gboolean dtmf_tone_key_is_valid (char key);
const char *get_call_icon_symbolic_name (gboolean inbound,
gboolean missed);
int get_address_family_for_ip (const char *ip,
gboolean only_configured_interfaces);
G_END_DECLS

25
tests/test-util.c
View file

@ -10,6 +10,9 @@
#include <gtk/gtk.h>
#include <sys/socket.h>
static void
test_protocol_prefix (void)
{
@ -69,6 +72,27 @@ test_null_empty_strings (void)
g_assert_false (STR_IS_NULL_OR_EMPTY ("lorem ipsum"));
}
static void
test_ip_address_family (void)
{
g_assert_cmpint (get_address_family_for_ip ("10.42.0.1", FALSE), ==, AF_INET);
g_assert_cmpint (get_address_family_for_ip ("9.9.9.9", FALSE), ==, AF_INET);
g_assert_cmpint (get_address_family_for_ip ("127.0.0.1", FALSE), ==, AF_INET);
g_assert_cmpint (get_address_family_for_ip ("0.0.0.0", FALSE), ==, AF_INET);
g_assert_cmpint (get_address_family_for_ip ("FE80:0000:0000:0000:0202:C3DF:FE1E:8329", FALSE), ==, AF_INET6);
g_assert_cmpint (get_address_family_for_ip ("FE80::0202:C3DF:FE1E:8329", FALSE), ==, AF_INET6);
g_assert_cmpint (get_address_family_for_ip ("fe80::0202:c3df:fe1e:8329", FALSE), ==, AF_INET6);
g_assert_cmpint (get_address_family_for_ip ("::", FALSE), ==, AF_INET6);
g_assert_cmpint (get_address_family_for_ip ("::1", FALSE), ==, AF_INET6);
g_assert_cmpint (get_address_family_for_ip ("example.org", FALSE), ==, AF_UNSPEC);
}
int
main (int argc,
char *argv[])
@ -79,6 +103,7 @@ main (int argc,
g_test_add_func ("/Calls/util/dtmf_tones", (GTestFunc) test_dtmf_tone_validity);
g_test_add_func ("/Calls/util/call_icon_names", (GTestFunc) test_call_icon_names);
g_test_add_func ("/Calls/util/null-or-empty-strings", (GTestFunc) test_null_empty_strings);
g_test_add_func ("/Calls/util/ip_address_family", (GTestFunc) test_ip_address_family);
g_test_run ();
}