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dns: don't use zero ID's

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This commit is contained in:
Elizabeth Myers 2016-04-02 20:19:37 -05:00
parent e22b896208
commit 8d48aa190b
1 changed files with 11 additions and 4 deletions
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15
ircd/dns.c
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@ -66,8 +66,15 @@ rb_dlink_list nameservers;
static uint32_t query_id = 0;
static uint32_t stat_id = 0;
#define ASSIGN_ID(id) (id++)
static inline uint32_t
assign_id(uint32_t *id)
{
if(++(*id) == 0)
*id = 1;
return *id;
}
static void
handle_dns_failure(uint32_t xid)
@ -122,7 +129,7 @@ lookup_hostname(const char *hostname, int aftype, DNSCB callback, void *data)
{
struct dnsreq *req = rb_malloc(sizeof(struct dnsreq));
int aft;
uint32_t rid = ASSIGN_ID(query_id);
uint32_t rid = assign_id(&query_id);
check_authd();
@ -147,7 +154,7 @@ lookup_ip(const char *addr, int aftype, DNSCB callback, void *data)
{
struct dnsreq *req = rb_malloc(sizeof(struct dnsreq));
int aft;
uint32_t rid = ASSIGN_ID(query_id);
uint32_t rid = assign_id(&query_id);
check_authd();
@ -171,7 +178,7 @@ uint32_t
get_nameservers(DNSLISTCB callback, void *data)
{
struct dnsstatreq *req = rb_malloc(sizeof(struct dnsstatreq));
uint32_t qid = ASSIGN_ID(stat_id);
uint32_t qid = assign_id(&stat_id);
check_authd();