void
on_entry_config_ipv6_trt_prefix_activate(GtkEditable *unused_editable,
gpointer unused_udata)
{
const gchar *endptr;
host_addr_t addr;
gchar *text;
(void) unused_editable;
(void) unused_udata;
text = STRTRACK(gtk_editable_get_chars(
GTK_EDITABLE(gui_dlg_prefs_lookup("entry_config_ipv6_trt_prefix")),
0, -1));
g_strstrip(text);
if (
string_to_host_addr(text, &endptr, &addr)
&& '\0' == endptr[0]
&& host_addr_is_ipv6(addr)
) {
gnet_prop_set_ip_val(PROP_IPV6_TRT_PREFIX, addr);
} else if (0 == strcmp(text, "") || 0 == strcmp(text, "<none>")) {
gnet_prop_set_ip_val(PROP_IPV6_TRT_PREFIX, zero_host_addr);
}
G_FREE_NULL(text);
}
/**
* Retrieve value associated with an IP address, i.e. that of the range
* containing it.
*
* @param db the IP range database
* @param ha the IP address to lookup
*
* @return The data associated with the IP address or 0 if not found.
*/
uint16
iprange_get_addr(const struct iprange_db *idb, const host_addr_t ha)
{
host_addr_t to;
if (
host_addr_convert(ha, &to, NET_TYPE_IPV4) ||
host_addr_tunnel_client(ha, &to)
) {
return iprange_get(idb, host_addr_ipv4(to));
} else if (host_addr_is_ipv6(ha)) {
return iprange_get6(idb, host_addr_ipv6(&ha));
}
return 0;
}
/**
* @returns true if the address is inside one of the local networks
*/
gboolean
host_is_nearby(const host_addr_t addr)
{
guint i;
if (host_addr_is_ipv4(addr)) {
for (i = 0; i < number_local_networks; i++) {
guint32 m_mask = local_networks[i].mask;
guint32 m_ip = local_networks[i].net;
if ((host_addr_ipv4(addr) & m_mask) == (m_ip & m_mask))
return TRUE;
}
} else if (host_addr_is_ipv6(addr)) {
/* XXX: Implement this! */
}
return FALSE;
}
void
on_entry_config_ipv6_trt_prefix_changed(GtkEditable *editable,
gpointer unused_udata)
{
gchar *text = STRTRACK(gtk_editable_get_chars(editable, 0, -1));
const gchar *endptr;
host_addr_t addr;
gboolean sensitive;
(void) unused_udata;
g_strstrip(text);
sensitive = string_to_host_addr(text, &endptr, &addr)
&& '\0' == endptr[0]
&& host_addr_is_ipv6(addr);
gtk_widget_set_sensitive(
gui_dlg_prefs_lookup("checkbutton_config_ipv6_trt_enable"),
sensitive);
G_FREE_NULL(text);
}
static inline bool
host_addr_is_teredo(const host_addr_t ha)
{
return host_addr_is_ipv6(ha) && 0x20010000UL == peek_be32(&ha.addr.ipv6[0]);
}
static inline bool
host_addr_is_6to4(const host_addr_t ha)
{
return host_addr_is_ipv6(ha) && 0x2002 == peek_be16(&ha.addr.ipv6[0]);
}
/**
* Loads the whitelist into memory.
*/
static void G_COLD
whitelist_retrieve(void)
{
char line[1024];
FILE *f;
filestat_t st;
unsigned linenum = 0;
file_path_t fp[1];
whitelist_generation++;
file_path_set(fp, settings_config_dir(), whitelist_file);
f = file_config_open_read_norename("Host Whitelist", fp, N_ITEMS(fp));
if (!f)
return;
if (fstat(fileno(f), &st)) {
g_warning("%s(): fstat() failed: %m", G_STRFUNC);
fclose(f);
return;
}
while (fgets(line, sizeof line, f)) {
pslist_t *sl_addr, *sl;
const char *endptr, *start;
host_addr_t addr;
uint16 port;
uint8 bits;
bool item_ok;
bool use_tls;
char *hname;
linenum++;
if (!file_line_chomp_tail(line, sizeof line, NULL)) {
g_warning("%s(): line %u too long, aborting", G_STRFUNC, linenum);
break;
}
if (file_line_is_skipable(line))
continue;
sl_addr = NULL;
addr = zero_host_addr;
endptr = NULL;
hname = NULL;
endptr = is_strprefix(line, "tls:");
if (endptr) {
use_tls = TRUE;
start = endptr;
} else {
use_tls = FALSE;
start = line;
}
port = 0;
if (string_to_host_addr_port(start, &endptr, &addr, &port)) {
sl_addr = name_to_host_addr(host_addr_to_string(addr),
settings_dns_net());
} else if (string_to_host_or_addr(start, &endptr, &addr)) {
uchar c = *endptr;
switch (c) {
case '\0':
case ':':
case '/':
break;
default:
if (!is_ascii_space(c))
endptr = NULL;
}
if (!endptr) {
g_warning("%s(): line %d: "
"expected a hostname or IP address \"%s\"",
G_STRFUNC, linenum, line);
continue;
}
/* Terminate the string for name_to_host_addr() */
hname = h_strndup(start, endptr - start);
} else {
g_warning("%s(): line %d: expected hostname or IP address \"%s\"",
G_STRFUNC, linenum, line);
continue;
}
g_assert(sl_addr != NULL || hname != NULL);
g_assert(NULL != endptr);
bits = 0;
item_ok = TRUE;
/*
* When an explicit address is given (no hostname) and with no
* port, one can suffix the address with bits to indicate a CIDR
* range of whitelisted addresses.
*/
if (0 == port) {
/* Ignore trailing items separated by a space */
while ('\0' != *endptr && !is_ascii_space(*endptr)) {
uchar c = *endptr++;
if (':' == c) {
int error;
uint32 v;
if (0 != port) {
g_warning("%s(): line %d: multiple colons after host",
G_STRFUNC, linenum);
item_ok = FALSE;
break;
}
v = parse_uint32(endptr, &endptr, 10, &error);
port = (error || v > 0xffff) ? 0 : v;
if (0 == port) {
g_warning("%s(): line %d: "
"invalid port value after host",
G_STRFUNC, linenum);
item_ok = FALSE;
break;
}
} else if ('/' == c) {
const char *ep;
uint32 mask;
if (0 != bits) {
g_warning("%s(): line %d: "
"multiple slashes after host", G_STRFUNC, linenum);
item_ok = FALSE;
break;
}
if (string_to_ip_strict(endptr, &mask, &ep)) {
if (!host_addr_is_ipv4(addr)) {
g_warning("%s(): line %d: "
"IPv4 netmask after non-IPv4 address",
G_STRFUNC, linenum);
item_ok = FALSE;
break;
}
endptr = ep;
if (0 == (bits = netmask_to_cidr(mask))) {
g_warning("%s(): line %d: "
"IPv4 netmask after non-IPv4 address",
G_STRFUNC, linenum);
item_ok = FALSE;
break;
}
} else {
int error;
uint32 v;
v = parse_uint32(endptr, &endptr, 10, &error);
if (
error ||
0 == v ||
(v > 32 && host_addr_is_ipv4(addr)) ||
(v > 128 && host_addr_is_ipv6(addr))
) {
g_warning("%s(): line %d: "
"invalid numeric netmask after host",
G_STRFUNC, linenum);
item_ok = FALSE;
break;
}
bits = v;
}
} else {
g_warning("%s(): line %d: "
"unexpected character after host", G_STRFUNC, linenum);
item_ok = FALSE;
break;
}
}
}
if (item_ok) {
struct whitelist *item;
if (hname) {
item = whitelist_hostname_create(use_tls, hname, port);
whitelist_dns_resolve(item, FALSE);
} else {
PSLIST_FOREACH(sl_addr, sl) {
host_addr_t *aptr = sl->data;
g_assert(aptr != NULL);
item = whitelist_addr_create(use_tls, *aptr, port, bits);
whitelist_add(item);
}
}
} else {
