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add function get_first_local_ip

pull/5/head
yuqing 2015-09-08 19:09:35 +08:00
parent 69c8970e2d
commit 29451eaf49
3 changed files with 29 additions and 2 deletions
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3
HISTORY
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@ -1,9 +1,10 @@
Version 1.21 2015-09-05
Version 1.21 2015-09-08
* ini_file_reader support annotation function
* correct PTHREAD_MUTEX_ERRORCHECK define
* support 32 bit OS
* allow_ips support CIDR addresses such as 172.16.12.0/22
* add function get_first_local_ip
Version 1.20 2015-08-06
* add GEO function get_line_distance_km

27
src/local_ip_func.c
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@ -14,6 +14,8 @@
#include "shared_func.h"
#include "local_ip_func.h"
#define LOCAL_LOOPBACK_IP "127.0.0.1"
int g_local_host_ip_count = 0;
char g_local_host_ip_addrs[FAST_MAX_LOCAL_IP_ADDRS * \
IP_ADDRESS_SIZE];
@ -83,7 +85,7 @@ void load_local_host_ip_addrs()
char *if_alias_prefixes[STORAGE_MAX_ALIAS_PREFIX_COUNT];
int alias_count;
insert_into_local_host_ip("127.0.0.1");
insert_into_local_host_ip(LOCAL_LOOPBACK_IP);
memset(if_alias_prefixes, 0, sizeof(if_alias_prefixes));
if (*g_if_alias_prefix == '\0')
@ -132,3 +134,26 @@ void print_local_host_ip_addrs()
printf("\n");
}
const char *get_first_local_ip()
{
char *p;
char *pEnd;
if (g_local_host_ip_count == 0)
{
load_local_host_ip_addrs();
}
pEnd = g_local_host_ip_addrs + \
IP_ADDRESS_SIZE * g_local_host_ip_count;
for (p=g_local_host_ip_addrs; p<pEnd; p+=IP_ADDRESS_SIZE)
{
if (strcmp(p, LOCAL_LOOPBACK_IP) != 0)
{
return p;
}
}
return LOCAL_LOOPBACK_IP;
}

1
src/local_ip_func.h
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@ -31,6 +31,7 @@ extern char g_if_alias_prefix[FAST_IF_ALIAS_PREFIX_MAX_SIZE];
void load_local_host_ip_addrs();
bool is_local_host_ip(const char *client_ip);
const char *get_first_local_ip();
int insert_into_local_host_ip(const char *client_ip);
void print_local_host_ip_addrs();