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res_resolver_unbound: Allow compilation with libunbound version < 1.5

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libunbound at version 1.4.20 (which CentOS still uses) declared all
of their string function parameters as as 'char *'.  1.4.21 changed
them all to 'const char *'.  Thankfully 1.4.21 also introduced the
UNBOUND_VERSION_MAJOR define so configure now checks for that and
sets HAVE_UNBOUND_CONST_PARAMS.  res_resolver_unbound then checks
that and casts away the 'const' if it's not set.

Tested compile and testsuite on CentOS6 (1.4.20), Ubuntu14 (1.4.22) and
Fedora24 (1.5.4).  There are a few failing tests to be addressed though.

ASTERISK-26283 #close

Change-Id: Ib708b19b706c5d0ba7b7d5473e6df339d9ae4148
This commit is contained in:
George Joseph
2016-08-10 10:47:32 -06:00
parent d78fe8fed0
commit 8d42ff784d
4 changed files with 81 additions and 23 deletions
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53
res/res_resolver_unbound.c
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@@ -79,6 +79,17 @@ ASTERISK_REGISTER_FILE()
</configInfo>
***/
/*!
* Unbound versions <= 1.4.20 declare string function parameters as 'char *'
* but versions >= 1.4.21 declare them as 'const char *'. Since CentOS6 is still
* at 1.4.20, we need to cast away the 'const' if we detect the earlier version.
*/
#ifdef HAVE_UNBOUND_CONST_PARAMS
#define UNBOUND_CHAR const char
#else
#define UNBOUND_CHAR char
#endif
/*! \brief Structure for an unbound resolver */
struct unbound_resolver {
/*! \brief Resolver context itself */
@@ -292,7 +303,7 @@ static int unbound_resolver_resolve(struct ast_dns_query *query)
data->resolver = ao2_bump(cfg->global->state->resolver);
ast_dns_resolver_set_data(query, data);
res = ub_resolve_async(data->resolver->context, ast_dns_query_get_name(query),
res = ub_resolve_async(data->resolver->context, (UNBOUND_CHAR *)ast_dns_query_get_name(query),
ast_dns_query_get_rr_type(query), ast_dns_query_get_rr_class(query),
ao2_bump(query), unbound_resolver_callback, &data->id);
@@ -404,7 +415,7 @@ static int unbound_config_preapply(struct unbound_config *cfg)
if (!strcmp(cfg->global->hosts, "system")) {
res = ub_ctx_hosts(cfg->global->state->resolver->context, NULL);
} else if (!ast_strlen_zero(cfg->global->hosts)) {
res = ub_ctx_hosts(cfg->global->state->resolver->context, cfg->global->hosts);
res = ub_ctx_hosts(cfg->global->state->resolver->context, (UNBOUND_CHAR *)cfg->global->hosts);
}
if (res) {
@@ -419,7 +430,7 @@ static int unbound_config_preapply(struct unbound_config *cfg)
it_nameservers = ao2_iterator_init(cfg->global->nameservers, 0);
while ((nameserver = ao2_iterator_next(&it_nameservers))) {
res = ub_ctx_set_fwd(cfg->global->state->resolver->context, nameserver);
res = ub_ctx_set_fwd(cfg->global->state->resolver->context, (UNBOUND_CHAR *)nameserver);
if (res) {
ast_log(LOG_ERROR, "Failed to add nameserver '%s' to unbound resolver: %s\n",
@@ -434,7 +445,7 @@ static int unbound_config_preapply(struct unbound_config *cfg)
if (!strcmp(cfg->global->resolv, "system")) {
res = ub_ctx_resolvconf(cfg->global->state->resolver->context, NULL);
} else if (!ast_strlen_zero(cfg->global->resolv)) {
res = ub_ctx_resolvconf(cfg->global->state->resolver->context, cfg->global->resolv);
res = ub_ctx_resolvconf(cfg->global->state->resolver->context, (UNBOUND_CHAR *)cfg->global->resolv);
}
if (res) {
@@ -444,7 +455,7 @@ static int unbound_config_preapply(struct unbound_config *cfg)
}
if (!ast_strlen_zero(cfg->global->ta_file)) {
res = ub_ctx_add_ta_file(cfg->global->state->resolver->context, cfg->global->ta_file);
res = ub_ctx_add_ta_file(cfg->global->state->resolver->context, (UNBOUND_CHAR *)cfg->global->ta_file);
if (res) {
ast_log(LOG_ERROR, "Failed to set trusted anchor file to '%s' in unbound resolver: %s\n",
@@ -740,13 +751,13 @@ static enum ast_test_result_state nominal_test(struct ast_test *test, resolve_fn
static const size_t V4_SIZE = sizeof(struct in_addr);
static const size_t V6_SIZE = sizeof(struct in6_addr);
static const char *DOMAIN1 = "goose.feathers";
static const char *DOMAIN2 = "duck.feathers";
static UNBOUND_CHAR *DOMAIN1 = "goose.feathers";
static UNBOUND_CHAR *DOMAIN2 = "duck.feathers";
static const char *ADDR1 = "127.0.0.2";
static const char *ADDR2 = "127.0.0.3";
static const char *ADDR3 = "::1";
static const char *ADDR4 = "127.0.0.4";
static UNBOUND_CHAR *ADDR1 = "127.0.0.2";
static UNBOUND_CHAR *ADDR2 = "127.0.0.3";
static UNBOUND_CHAR *ADDR3 = "::1";
static UNBOUND_CHAR *ADDR4 = "127.0.0.4";
char addr1_buf[V4_SIZE];
char addr2_buf[V4_SIZE];
@@ -786,7 +797,7 @@ static enum ast_test_result_state nominal_test(struct ast_test *test, resolve_fn
ub_ctx_zone_add(resolver->context, DOMAIN2, "static");
for (i = 0; i < ARRAY_LEN(records); ++i) {
ub_ctx_data_add(resolver->context, records[i].as_string);
ub_ctx_data_add(resolver->context, (UNBOUND_CHAR *)records[i].as_string);
}
for (i = 0; i < ARRAY_LEN(runs); ++i) {
@@ -808,7 +819,7 @@ static enum ast_test_result_state nominal_test(struct ast_test *test, resolve_fn
cleanup:
for (i = 0; i < ARRAY_LEN(records); ++i) {
ub_ctx_data_remove(resolver->context, records[i].as_string);
ub_ctx_data_remove(resolver->context, (UNBOUND_CHAR *)records[i].as_string);
}
ub_ctx_zone_remove(resolver->context, DOMAIN1);
ub_ctx_zone_remove(resolver->context, DOMAIN2);
@@ -1012,10 +1023,10 @@ static enum ast_test_result_state off_nominal_test(struct ast_test *test,
static const size_t V4_SIZE = sizeof(struct in_addr);
static const char *DOMAIN1 = "goose.feathers";
static const char *DOMAIN2 = "duck.feathers";
static UNBOUND_CHAR *DOMAIN1 = "goose.feathers";
static UNBOUND_CHAR *DOMAIN2 = "duck.feathers";
static const char *ADDR1 = "127.0.0.2";
static UNBOUND_CHAR *ADDR1 = "127.0.0.2";
char addr1_buf[V4_SIZE];
@@ -1046,7 +1057,7 @@ static enum ast_test_result_state off_nominal_test(struct ast_test *test,
ub_ctx_zone_add(resolver->context, DOMAIN2, "static");
for (i = 0; i < ARRAY_LEN(records); ++i) {
ub_ctx_data_add(resolver->context, records[i].as_string);
ub_ctx_data_add(resolver->context, (UNBOUND_CHAR *)records[i].as_string);
}
for (i = 0; i < ARRAY_LEN(runs); ++i) {
@@ -1196,7 +1207,7 @@ AST_TEST_DEFINE(resolve_naptr)
const struct ast_dns_record *record;
static const char * DOMAIN1 = "goose.feathers";
static char * DOMAIN1 = "goose.feathers";
int i;
enum ast_test_result_state res = AST_TEST_PASS;
@@ -1234,7 +1245,7 @@ AST_TEST_DEFINE(resolve_naptr)
ub_ctx_zone_add(resolver->context, DOMAIN1, "static");
for (i = 0; i < ARRAY_LEN(records); ++i) {
ub_ctx_data_add(resolver->context, records[i].zone_entry);
ub_ctx_data_add(resolver->context, (UNBOUND_CHAR *)records[i].zone_entry);
}
if (ast_dns_resolve(DOMAIN1, ns_t_naptr, ns_c_in, &result)) {
@@ -1311,8 +1322,8 @@ AST_TEST_DEFINE(resolve_srv)
RAII_VAR(struct unbound_config *, cfg, NULL, ao2_cleanup);
RAII_VAR(struct ast_dns_result *, result, NULL, ast_dns_result_free);
const struct ast_dns_record *record;
static const char *DOMAIN1 = "taco.bananas";
static const char *DOMAIN1_SRV = "taco.bananas 12345 IN SRV 10 20 5060 sip.taco.bananas";
static UNBOUND_CHAR *DOMAIN1 = "taco.bananas";
static UNBOUND_CHAR *DOMAIN1_SRV = "taco.bananas 12345 IN SRV 10 20 5060 sip.taco.bananas";
enum ast_test_result_state res = AST_TEST_PASS;
switch (cmd) {