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use getaddrinfo() for Linux implementation

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simply implementation and support hostname as address

Note: do not use static linking in compilation since this commit,
since getaddrinfo() causes problems with static linking.
Ref:
[1] https://stackoverflow.com/questions/2725255/create-statically-linked-binary-that-uses-getaddrinfo
[2] https://www.linuxquestions.org/questions/programming-9/glibc-warning-concerning-use-of-getaddrinfo-in-static-library-734169
This commit is contained in:
HiGarfield 2022-02-12 03:10:58 +08:00
parent 8ceaf27eda
commit cad8132118
1 changed files with 41 additions and 0 deletions
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41
common.cpp
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@ -12,11 +12,39 @@
#include <random>
#include <cmath>
#ifdef UDP2RAW_LINUX
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#endif
//static int random_number_fd=-1;
int force_socket_buf=0;
int address_t::from_str(char *str)
{
#ifdef UDP2RAW_LINUX
char ip_addr_str[100];
mylog(log_info, "parsing address: %s\n", str);
char *pos = strrchr(str, ':');
if (!pos)
{
mylog(log_error, "invalid addr: %s\n", ip_addr_str);
myexit(-1);
}
memset(ip_addr_str, 0, sizeof(ip_addr_str));
strncpy(ip_addr_str, str, pos - str);
struct addrinfo *res;
int ret = getaddrinfo(ip_addr_str, pos + 1, NULL, &res);
if (ret < 0)
{
mylog(log_error, "invalid addr: %s, %s\n",
ip_addr_str, gai_strerror(ret));
myexit(-1);
}
memcpy(&inner, res->ai_addr, sizeof(*(res->ai_addr)));
freeaddrinfo(res);
#else
clear();
char ip_addr_str[100];u32_t port;
@ -87,6 +115,7 @@ int address_t::from_str(char *str)
myexit(-1);
}
}
#endif
return 0;
}
@ -95,6 +124,17 @@ int address_t::from_str_ip_only(char * str)
{
clear();
#ifdef UDP2RAW_LINUX
struct addrinfo *res;
int ret = getaddrinfo(str, NULL, NULL, &res);
if (ret < 0)
{
mylog(log_error, "invalid addr: %s, %s\n",
str, gai_strerror(ret));
myexit(-1);
}
memcpy(&inner, res->ai_addr, sizeof(*(res->ai_addr)));
#else
u32_t type;
if(strchr(str,':')==NULL)
@ -128,6 +168,7 @@ int address_t::from_str_ip_only(char * str)
mylog(log_error,"ip_addr %s is invalid, %d\n",str,ret);
myexit(-1);
}
#endif
return 0;
}