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asyn-ares.c: move all version number checks to the top

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... and use #ifdef [feature] in the code as per our guidelines.
This commit is contained in:
Daniel Stenberg 2021-08-11 08:53:08 +02:00
parent ba904db070
commit c3fa8c6e76
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 29 additions and 10 deletions
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39
lib/asyn-ares.c
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@ -80,6 +80,26 @@
#define HAVE_CARES_CALLBACK_TIMEOUTS 1
#endif
#if ARES_VERSION >= 0x010601
/* IPv6 supported since 1.6.1 */
#define HAVE_CARES_IPV6 1
#endif
#if ARES_VERSION >= 0x010704
#define HAVE_CARES_SERVERS_CSV 1
#define HAVE_CARES_LOCAL_DEV 1
#define HAVE_CARES_SET_LOCAL 1
#endif
#if ARES_VERSION >= 0x010b00
#define HAVE_CARES_PORTS_CSV 1
#endif
#if ARES_VERSION >= 0x011000
/* 1.16.0 or later has ares_getaddrinfo */
#define HAVE_CARES_GETADDRINFO 1
#endif
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
#include "curl_memory.h"
@ -490,7 +510,7 @@ CURLcode Curl_resolver_wait_resolv(struct Curl_easy *data,
return result;
}
#if ARES_VERSION < 0x011000 /* before 1.16.0 */
#ifndef HAVE_CARES_GETADDRINFO
/* Connects results to the list */
static void compound_results(struct thread_data *res,
@ -750,7 +770,7 @@ struct Curl_addrinfo *Curl_resolver_getaddrinfo(struct Curl_easy *data,
/* initial status - failed */
res->last_status = ARES_ENOTFOUND;
#if ARES_VERSION >= 0x010601
#ifdef HAVE_CARES_GETADDRINFO
{
struct ares_addrinfo_hints hints;
char service[12];
@ -771,8 +791,7 @@ struct Curl_addrinfo *Curl_resolver_getaddrinfo(struct Curl_easy *data,
}
#else
#if ARES_VERSION >= 0x010601
/* IPv6 supported by c-ares since 1.6.1 */
#ifdef HAVE_CARES_IPV6
if(Curl_ipv6works(data)) {
/* The stack seems to be IPv6-enabled */
res->num_pending = 2;
@ -784,7 +803,7 @@ struct Curl_addrinfo *Curl_resolver_getaddrinfo(struct Curl_easy *data,
PF_INET6, query_completed_cb, data);
}
else
#endif /* ARES_VERSION >= 0x010601 */
#endif
{
res->num_pending = 1;
@ -814,8 +833,8 @@ CURLcode Curl_set_dns_servers(struct Curl_easy *data,
if(!(servers && servers[0]))
return CURLE_OK;
#if (ARES_VERSION >= 0x010704)
#if (ARES_VERSION >= 0x010b00)
#ifdef HAVE_CARES_SERVERS_CSV
#ifdef HAVE_CARES_PORTS_CSV
ares_result = ares_set_servers_ports_csv(data->state.async.resolver,
servers);
#else
@ -845,7 +864,7 @@ CURLcode Curl_set_dns_servers(struct Curl_easy *data,
CURLcode Curl_set_dns_interface(struct Curl_easy *data,
const char *interf)
{
#if (ARES_VERSION >= 0x010704)
#ifdef HAVE_CARES_LOCAL_DEV
if(!interf)
interf = "";
@ -862,7 +881,7 @@ CURLcode Curl_set_dns_interface(struct Curl_easy *data,
CURLcode Curl_set_dns_local_ip4(struct Curl_easy *data,
const char *local_ip4)
{
#if (ARES_VERSION >= 0x010704)
#ifdef HAVE_CARES_SET_LOCAL
struct in_addr a4;
if((!local_ip4) || (local_ip4[0] == 0)) {
@ -888,7 +907,7 @@ CURLcode Curl_set_dns_local_ip4(struct Curl_easy *data,
CURLcode Curl_set_dns_local_ip6(struct Curl_easy *data,
const char *local_ip6)
{
#if (ARES_VERSION >= 0x010704) && defined(ENABLE_IPV6)
#if defined(HAVE_CARES_SET_LOCAL) && defined(ENABLE_IPV6)
unsigned char a6[INET6_ADDRSTRLEN];
if((!local_ip6) || (local_ip6[0] == 0)) {