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Code Issues Releases Wiki Activity

4612. [bug] Silence 'may be use uninitalised' warning and simplify

Browse Source 
the code in lwres/getaddinfo:process_answer.
                        [RT #45158]
This commit is contained in:
Mark Andrews
2017-05-02 09:23:49 +10:00
parent 532a001001
commit b09eb48f8a
2 changed files with 26 additions and 20 deletions
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4
CHANGES
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@@ -1,3 +1,7 @@
4612. [bug] Silence 'may be use uninitalised' warning and simplify
the code in lwres/getaddinfo:process_answer.
[RT #45158]
4611. [bug] The default LMDB mapsize was too low and caused
errors after few thousand zones were added using
rndc addzone. A new config option "lmdb-mapsize"

42
lib/irs/getaddrinfo.c
View File

@@ -681,6 +681,7 @@ process_answer(isc_task_t *task, isc_event_t *event) {
dns_clientresevent_t *rev = (dns_clientresevent_t *)event;
dns_rdatatype_t qtype;
dns_name_t *name;
isc_boolean_t wantcname;
REQUIRE(trans != NULL);
resstate = trans->resstate;
@@ -724,14 +725,26 @@ process_answer(isc_task_t *task, isc_event_t *event) {
goto done;
}
wantcname = ISC_TF((resstate->head->ai_flags & AI_CANONNAME) != 0);
/* Parse the response and construct the addrinfo chain */
for (name = ISC_LIST_HEAD(rev->answerlist); name != NULL;
name = ISC_LIST_NEXT(name, link)) {
isc_result_t result;
dns_rdataset_t *rdataset;
isc_buffer_t b;
isc_region_t r;
char t[1024];
char cname[1024];
if (wantcname) {
isc_buffer_t b;
isc_buffer_init(&b, cname, sizeof(cname));
result = dns_name_totext(name, ISC_TRUE, &b);
if (result != ISC_R_SUCCESS) {
error = EAI_FAIL;
goto done;
}
isc_buffer_putuint8(&b, '\0');
}
for (rdataset = ISC_LIST_HEAD(name->list);
rdataset != NULL;
@@ -741,17 +754,6 @@ process_answer(isc_task_t *task, isc_event_t *event) {
if (rdataset->type != qtype)
continue;
if ((resstate->head->ai_flags & AI_CANONNAME) != 0) {
isc_buffer_init(&b, t, sizeof(t));
result = dns_name_totext(name, ISC_TRUE, &b);
if (result != ISC_R_SUCCESS) {
error = EAI_FAIL;
goto done;
}
isc_buffer_putuint8(&b, '\0');
isc_buffer_usedregion(&b, &r);
}
for (result = dns_rdataset_first(rdataset);
result == ISC_R_SUCCESS;
result = dns_rdataset_next(rdataset)) {
@@ -780,7 +782,8 @@ process_answer(isc_task_t *task, isc_event_t *event) {
switch (family) {
case AF_INET:
dns_rdataset_current(rdataset, &rdata);
result = dns_rdata_tostruct(&rdata, &rdata_a,
result = dns_rdata_tostruct(&rdata,
&rdata_a,
NULL);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
SIN(ai->ai_addr)->sin_port =
@@ -791,7 +794,8 @@ process_answer(isc_task_t *task, isc_event_t *event) {
break;
case AF_INET6:
dns_rdataset_current(rdataset, &rdata);
result = dns_rdata_tostruct(&rdata, &rdata_aaaa,
result = dns_rdata_tostruct(&rdata,
&rdata_aaaa,
NULL);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
SIN6(ai->ai_addr)->sin6_port =
@@ -802,10 +806,8 @@ process_answer(isc_task_t *task, isc_event_t *event) {
break;
}
if ((resstate->head->ai_flags & AI_CANONNAME)
!= 0) {
ai->ai_canonname =
strdup((const char *)r.base);
if (wantcname) {
ai->ai_canonname = strdup(cname);
if (ai->ai_canonname == NULL) {
error = EAI_MEMORY;
goto done;