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libbb: hide getnetbyaddr() inside "#if ENABLE_FEATURE_ETC_NETWORKS" block 

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2017-07-14 20:17:17 +02:00
parent 87d8ae94a2
commit 2cb72bb8de
1 changed files with 19 additions and 27 deletions
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46
libbb/inet_common.c
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@ -11,6 +11,12 @@
#include "libbb.h"
#include "inet_common.h"
#if 0
# define dbg(...) bb_error_msg(__VA_ARGS__)
#else
# define dbg(...) ((void)0)
#endif
int FAST_FUNC INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst)
{
struct hostent *hp;
@ -33,9 +39,7 @@ int FAST_FUNC INET_resolve(const char *name, struct sockaddr_in *s_in, int hostf
}
/* If we expect this to be a hostname, try hostname database first */
if (hostfirst) {
#ifdef DEBUG
bb_error_msg("gethostbyname(%s)", name);
#endif
dbg("gethostbyname(%s)", name);
hp = gethostbyname(name);
if (hp) {
memcpy(&s_in->sin_addr, hp->h_addr_list[0],
@ -45,9 +49,7 @@ int FAST_FUNC INET_resolve(const char *name, struct sockaddr_in *s_in, int hostf
}
#if ENABLE_FEATURE_ETC_NETWORKS
/* Try the NETWORKS database to see if this is a known network. */
#ifdef DEBUG
bb_error_msg("getnetbyname(%s)", name);
#endif
dbg("getnetbyname(%s)", name);
np = getnetbyname(name);
if (np) {
s_in->sin_addr.s_addr = htonl(np->n_net);
@ -61,8 +63,8 @@ int FAST_FUNC INET_resolve(const char *name, struct sockaddr_in *s_in, int hostf
#ifdef DEBUG
res_init();
_res.options |= RES_DEBUG;
bb_error_msg("gethostbyname(%s)", name);
#endif
dbg("gethostbyname(%s)", name);
hp = gethostbyname(name);
if (!hp) {
return -1;
@ -93,17 +95,12 @@ char* FAST_FUNC INET_rresolve(struct sockaddr_in *s_in, int numeric, uint32_t ne
smallint is_host;
if (s_in->sin_family != AF_INET) {
#ifdef DEBUG
bb_error_msg("rresolve: unsupported address family %d!",
s_in->sin_family);
#endif
dbg("rresolve: unsupported address family %d!", s_in->sin_family);
errno = EAFNOSUPPORT;
return NULL;
}
nip = s_in->sin_addr.s_addr;
#ifdef DEBUG
bb_error_msg("rresolve: %08x mask:%08x num:%08x", (unsigned)nip, netmask, numeric);
#endif
dbg("rresolve: %08x mask:%08x num:%08x", (unsigned)nip, netmask, numeric);
if (numeric & 0x0FFF)
return xmalloc_sockaddr2dotted_noport((void*)s_in);
if (nip == INADDR_ANY) {
@ -117,10 +114,8 @@ char* FAST_FUNC INET_rresolve(struct sockaddr_in *s_in, int numeric, uint32_t ne
pn = cache;
while (pn) {
if (pn->nip == nip && pn->is_host == is_host) {
#ifdef DEBUG
bb_error_msg("rresolve: found %s %08x in cache",
dbg("rresolve: found %s %08x in cache",
(is_host ? "host" : "net"), (unsigned)nip);
#endif
return xstrdup(pn->name);
}
pn = pn->next;
@ -128,19 +123,18 @@ char* FAST_FUNC INET_rresolve(struct sockaddr_in *s_in, int numeric, uint32_t ne
name = NULL;
if (is_host) {
#ifdef DEBUG
bb_error_msg("sockaddr2host_noport(%08x)", (unsigned)nip);
#endif
dbg("sockaddr2host_noport(%08x)", (unsigned)nip);
name = xmalloc_sockaddr2host_noport((void*)s_in);
} else if (ENABLE_FEATURE_ETC_NETWORKS) {
}
#if ENABLE_FEATURE_ETC_NETWORKS
else {
struct netent *np;
#ifdef DEBUG
bb_error_msg("getnetbyaddr(%08x)", (unsigned)ntohl(nip));
#endif
dbg("getnetbyaddr(%08x)", (unsigned)ntohl(nip));
np = getnetbyaddr(ntohl(nip), AF_INET);
if (np)
name = xstrdup(np->n_name);
}
#endif
if (!name)
name = xmalloc_sockaddr2dotted_noport((void*)s_in);
@ -183,10 +177,8 @@ int FAST_FUNC INET6_resolve(const char *name, struct sockaddr_in6 *sin6)
char* FAST_FUNC INET6_rresolve(struct sockaddr_in6 *sin6, int numeric)
{
if (sin6->sin6_family != AF_INET6) {
#ifdef DEBUG
bb_error_msg("rresolve: unsupported address family %d!",
dbg("rresolve: unsupported address family %d!",
sin6->sin6_family);
#endif
errno = EAFNOSUPPORT;
return NULL;
}