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added support for ipv6.

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Fixes a possible memory overflow.
This commit is contained in:
Thierry HUCHARD
2020-12-29 12:37:38 +01:00
committed by Ordissimo
parent 889b92b2e7
commit 6e73b031b5
1 changed files with 15 additions and 5 deletions
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backend/escl/escl_devices.c
+15 -5
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@@ -53,16 +53,20 @@ static int count_finish = 0;
*/
static void
resolve_callback(AvahiServiceResolver *r, AVAHI_GCC_UNUSED AvahiIfIndex interface,
AVAHI_GCC_UNUSED AvahiProtocol protocol,
AvahiResolverEvent event, const char *name,
AvahiProtocol protocol,
AvahiResolverEvent event,
const char *name,
const char __sane_unused__ *type,
const char __sane_unused__ *domain,
const char __sane_unused__ *host_name,
const AvahiAddress *address, uint16_t port, AvahiStringList *txt,
const AvahiAddress *address,
uint16_t port,
AvahiStringList *txt,
AvahiLookupResultFlags __sane_unused__ flags,
void __sane_unused__ *userdata)
{
char a[AVAHI_ADDRESS_STR_MAX], *t;
char a[(AVAHI_ADDRESS_STR_MAX + 2)] = { 0 };
char *t;
const char *is;
const char *uuid;
AvahiStringList *s;
@@ -71,7 +75,13 @@ resolve_callback(AvahiServiceResolver *r, AVAHI_GCC_UNUSED AvahiIfIndex interfac
case AVAHI_RESOLVER_FAILURE:
break;
case AVAHI_RESOLVER_FOUND:
avahi_address_snprint(a, sizeof(a), address);
if (protocol == AVAHI_PROTO_INET6) {
char b[AVAHI_ADDRESS_STR_MAX] = { 0 };
avahi_address_snprint(b, sizeof(b), address);
snprintf(a, sizeof(a), "[%s]", b);
}
else
avahi_address_snprint(a, sizeof(a), address);
t = avahi_string_list_to_string(txt);
if (strstr(t, "\"rs=eSCL\"") || strstr(t, "\"rs=/eSCL\"")) {
char ip_add[PATH_MAX] = {0};