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SRB2/src/i_addrinfo.c
Steel Titanium d415cd5c6d
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2019-12-06 13:49:42 -05:00

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// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 2011-2019 by Sonic Team Junior.
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
/// \file i_addrinfo.c
/// \brief getaddr stubs, for lesser OSes
///
/// Some systems/SDKs, like PSL1GHT v2 does not have addrinfo functions
/// So a stub is needed
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#ifdef _WIN32
#ifdef USE_WINSOCK2
#include <ws2tcpip.h>
#else
#include <winsock.h>
#endif
#elif !defined (__DJGPP__)
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
#include "i_addrinfo.h"
/*
* This addrinfo stub have a testcases:
* To test the stub, use this command to compile the stub testcase:
* gcc -g -DTESTCASE -Dtest_stub -Wall -W i_addrinfo.c -o stub
* To test the real getaddrinfo API, use this command to get real one:
* gcc -g -DTESTCASE -Utest_stub -Wall -W i_addrinfo.c -o real
* For Win32,you need the WinSock library, version 1.1 or 2.2
* for 1.1, add -lwsock32
* i686-w64-mingw32-gcc -g -DTESTCASE -Dtest_stub -UUSE_WINSOCK2 -Wall -W i_addrinfo.c -o stub.exe -lwsock32
* for 2.2, add -DUSE_WINSOCK2 -lws2_32
* i686-w64-mingw32-gcc -g -DTESTCASE -Utest_stub -DUSE_WINSOCK2 -Wall -W i_addrinfo.c -o real.exe -lws2_32
*/
#ifndef I_getaddrinfo
#if !defined (_MSC_VER) || (_MSC_VER >= 1800) // MSVC 2013 and forward
#include <stdbool.h>
#else
typedef char bool;
#endif
#ifdef _WIN32
// it seems windows doesn't define that... maybe some other OS? OS/2
static int inet_aton(const char *cp, struct in_addr *addr)
{
if( cp == NULL || addr == NULL )
{
return(0);
}
if (strcmp(cp, "255.255.255.225") == 0)
{
addr->s_addr = htonl(INADDR_BROADCAST);
return 0;
}
return (addr->s_addr = inet_addr(cp)) != htonl(INADDR_NONE);
}
#endif
#ifdef USE_WINSOCK2
static HMODULE ipv6dll = NULL;
typedef int (WSAAPI *p_getaddrinfo) (const char *, const char *,
const struct my_addrinfo *,
struct my_addrinfo **);
typedef void (WSAAPI *p_freeaddrinfo) (struct my_addrinfo *);
static p_getaddrinfo WS_getaddrinfo = NULL;
static p_freeaddrinfo WS_freeaddrinfo = NULL;
static HMODULE WS_getfunctions(HMODULE tmp)
{
if (tmp != NULL)
{
WS_getaddrinfo = (p_getaddrinfo)(LPVOID)GetProcAddress(tmp, "getaddrinfo");
if (WS_getaddrinfo == NULL)
return NULL;
WS_freeaddrinfo = (p_freeaddrinfo)(LPVOID)GetProcAddress(tmp, "freeaddrinfo");
if (WS_freeaddrinfo == NULL)
{
WS_getaddrinfo = NULL;
return NULL;
}
}
return tmp;
}
static void WS_addrinfosetup(void)
{
if (WS_getaddrinfo && WS_freeaddrinfo)
return; // already have the functions
// why not hold it into ipv6dll? becase we already link with ws2_32, silly!
if (WS_getfunctions(GetModuleHandleA("ws2_32.dll")) == NULL)
ipv6dll = WS_getfunctions(LoadLibraryA("wship6.dll"));
}
void WS_addrinfocleanup(void)
{
if (ipv6dll)
FreeLibrary(ipv6dll);
ipv6dll = NULL;
WS_getaddrinfo = NULL;
WS_freeaddrinfo = NULL;
}
#else
void WS_addrinfocleanup(void) {}
#endif
int I_getaddrinfo(const char *node, const char *service,
const struct my_addrinfo *hints,
struct my_addrinfo **res)
{
struct hostent *nodename = NULL;
bool hostlookup = true, passivemode = false;
int flags = 0;
int socktype = 0;
int sockport = 0;
struct my_addrinfo *ai;
struct sockaddr_in *addr;
struct in_addr ipv4;
size_t addrlen = 1;
size_t ailen = 1, i = 0, j;
size_t famsize = sizeof(struct sockaddr_in);
#ifdef USE_WINSOCK2
WS_addrinfosetup();
if (WS_getaddrinfo)
return WS_getaddrinfo(node, service, hints, res);
#endif
// param check
if (node == NULL && service == NULL)
return EAI_NONAME;
//note: testcase show NULL as res crashes libc
if (res == NULL)
return -1;
// check hints
if (hints)
{
// no support for IPv6
if (hints->ai_family != AF_INET && hints->ai_family != AF_UNSPEC)
return -1; //EAI_FAMILY
#ifdef AI_NUMERICHOST
// do not look up hostnames
if ((hints->ai_flags & AI_NUMERICHOST) == AI_NUMERICHOST)
{
hostlookup = false;
flags |= AI_NUMERICHOST;
}
#endif
#ifdef AI_PASSIVE
// return loopback or any address?
if ((hints->ai_flags & AI_PASSIVE) == AI_PASSIVE)
{
passivemode = true;
flags |= AI_PASSIVE;
}
#endif
// why no support for canon names? lazy
//AI_CANONNAME
// what kind of socket?
socktype = hints->ai_socktype;
}
else
{
#ifdef AI_V4MAPPED
flags |= AI_V4MAPPED;
#endif
#ifdef AI_ADDRCONFIG
flags |= AI_ADDRCONFIG;
#endif
}
// we need gethostbyname to convert numeric strings
if (node && hostlookup)
{
if (node == NULL)
return -1;
nodename = gethostbyname(node);
if (nodename == NULL)
{
if (inet_aton(node, &ipv4) != 0)
addrlen = 1;
else
return -1;
}
else while (nodename->h_addr_list[addrlen] != NULL)
addrlen++;
}
else if (node)
{
if (inet_aton(node, &ipv4) != 0)
addrlen = 1;
else if (!hostlookup)
return EAI_NONAME;
}
else
addrlen = 1;
if (service) //AI_NUMERICSERV
sockport = atoi(service);
if (socktype == 0)
ailen = addrlen*3;
else
ailen = addrlen;
ai = calloc(ailen, sizeof(struct my_addrinfo));
if (ai == NULL)
return -1;
else
*res = ai;
addr = calloc(ailen*2, famsize);
if (addr == NULL)
{
free(ai);
return -1;
}
else
ai->ai_addr = memset(addr, 0x00, ailen*ai->ai_addrlen);
for (i = 0; i < ailen; i++)
{
ai = *res+i;
ai->ai_flags = flags;
ai->ai_family = AF_INET;
ai->ai_socktype = socktype;
switch (ai->ai_socktype)
{
case SOCK_STREAM:
ai->ai_protocol = IPPROTO_TCP;
break;
case SOCK_DGRAM:
ai->ai_protocol = IPPROTO_UDP;
break;
default:
ai->ai_protocol = 0;
}
ai->ai_addrlen = famsize;
ai->ai_addr = (struct sockaddr *)&addr[i];
//ai_cannonname
ai->ai_next = ai+1;
}
ai->ai_next = NULL;
ai = *res;
for (i = 0, j = 0; i < ailen; i++, j++)
{
ai = *res+i;
addr[i].sin_port = htons((UINT16)sockport);
if (nodename)
{
memcpy(&addr[i].sin_addr, nodename->h_addr_list[j], ai->ai_addrlen);
addr[i].sin_family = nodename->h_addrtype;
}
else if (node)
{
memcpy(&addr[i].sin_addr, &ipv4, ai->ai_addrlen);
addr[i].sin_family = AF_INET;
}
else
{
if (passivemode)
addr[i].sin_addr.s_addr = htonl(INADDR_ANY);
else
addr[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK);
addr[i].sin_family = AF_INET;
}
if (socktype == 0)
{
ai->ai_socktype = SOCK_STREAM;
ai->ai_protocol = IPPROTO_TCP;
memcpy(&addr[i+1], &addr[i], ai->ai_addrlen);
i++; ai++;
ai->ai_socktype = SOCK_DGRAM;
ai->ai_protocol = IPPROTO_UDP;
memcpy(&addr[i+1], &addr[i], ai->ai_addrlen);
i++; ai++;
ai->ai_socktype = SOCK_RAW;
ai->ai_protocol = IPPROTO_IP;
}
}
return 0;
}
#endif
#ifndef I_freeaddrinfo
void I_freeaddrinfo(struct my_addrinfo *res)
{
#ifdef USE_WINSOCK2
if (WS_freeaddrinfo)
{
WS_freeaddrinfo(res);
return;
}
#endif
if (!res)
return;
free(res->ai_addr);
free(res);
}
#endif
#ifdef TESTCASE
#include <stdio.h>
#ifdef USE_WINSOCK2
#define inet_ntop inet_ntopA
#define HAVE_NTOP
static const char* inet_ntopA(int af, const void *cp, char *buf, socklen_t len)
{
DWORD Dlen = len, AFlen = 0;
SOCKADDR_STORAGE any;
LPSOCKADDR anyp = (LPSOCKADDR)&any;
LPSOCKADDR_IN any4 = (LPSOCKADDR_IN)&any;
LPSOCKADDR_IN6 any6 = (LPSOCKADDR_IN6)&any;
if (!buf)
{
WSASetLastError(STATUS_INVALID_PARAMETER);
return NULL;
}
if (af != AF_INET && af != AF_INET6)
{
WSASetLastError(WSAEAFNOSUPPORT);
return NULL;
}
ZeroMemory(&any, sizeof(SOCKADDR_STORAGE));
any.ss_family = af;
switch (af)
{
case AF_INET:
{
CopyMemory(&any4->sin_addr, cp, sizeof(IN_ADDR));
AFlen = sizeof(SOCKADDR_IN);
break;
}
case AF_INET6:
{
CopyMemory(&any6->sin6_addr, cp, sizeof(IN6_ADDR));
AFlen = sizeof(SOCKADDR_IN6);
break;
}
}
if (WSAAddressToStringA(anyp, AFlen, NULL, buf, &Dlen) == SOCKET_ERROR)
return NULL;
return buf;
}
#elif defined (_WIN32)
// w32api, ws2tcpip.h, r1.12
static inline char* gai_strerror(int ecode)
{
static char message[1024+1];
DWORD dwFlags = FORMAT_MESSAGE_FROM_SYSTEM
| FORMAT_MESSAGE_IGNORE_INSERTS
| FORMAT_MESSAGE_MAX_WIDTH_MASK;
DWORD dwLanguageId = MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT);
FormatMessageA(dwFlags, NULL, ecode, dwLanguageId, message, 1024, NULL);
return message;
}
#else
#define HAVE_NTOP
#endif
#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN 16
#endif
static inline void printflags(int ai_flags)
{
printf("flags: %x(", ai_flags);
if (ai_flags == 0)
printf("NONE|");
#ifdef AI_PASSIVE
if ((ai_flags & AI_PASSIVE) == AI_PASSIVE)
printf("AI_PASSIVE|");
ai_flags &= ~AI_PASSIVE;
#endif
#ifdef AI_CANONNAME
if ((ai_flags & AI_CANONNAME) == AI_CANONNAME)
printf("AI_CANONNAME|");
ai_flags &= ~AI_CANONNAME;
#endif
#ifdef AI_NUMERICHOST
if ((ai_flags & AI_NUMERICHOST) == AI_NUMERICHOST)
printf("AI_NUMERICHOST|");
ai_flags &= ~AI_NUMERICHOST;
#endif
#ifdef AI_V4MAPPED
if ((ai_flags & AI_V4MAPPED) == AI_V4MAPPED)
printf("AI_V4MAPPED|");
ai_flags &= ~AI_V4MAPPED;
#endif
#ifdef AI_ALL
if ((ai_flags & AI_ALL) == AI_ALL)
printf("AI_ALL|");
ai_flags &= ~AI_ALL;
#endif
#ifdef AI_ADDRCONFIG
if ((ai_flags & AI_ADDRCONFIG) == AI_ADDRCONFIG)
printf("AI_ADDRCONFIG|");
ai_flags &= ~AI_ADDRCONFIG;
#endif
#ifdef AI_IDN
if ((ai_flags & AI_IDN) == AI_IDN)
printf("AI_IDN|");
ai_flags &= ~AI_IDN;
#endif
#ifdef AI_CANONIDN
if ((ai_flags & AI_CANONIDN) == AI_CANONIDN)
printf("AI_CANONIDN|");
ai_flags &= ~AI_CANONIDN;
#endif
#ifdef AI_IDN_ALLOW_UNASSIGNED
if ((ai_flags & AI_IDN_ALLOW_UNASSIGNED) == AI_IDN_ALLOW_UNASSIGNED)
printf("AI_IDN_ALLOW_UNASSIGNED|");
ai_flags &= ~AI_IDN_ALLOW_UNASSIGNED;
#endif
#ifdef AI_IDN_USE_STD3_ASCII_RULES
if ((ai_flags & AI_IDN_USE_STD3_ASCII_RULES) == AI_IDN_USE_STD3_ASCII_RULES)
printf("AI_IDN_USE_STD3_ASCII_RULES|");
ai_flags &= ~AI_PASSIVE;
#endif
#ifdef AI_NUMERICSERV
if ((ai_flags & AI_NUMERICSERV) == AI_NUMERICSERV)
printf("AI_NUMERICSERV|");
ai_flags &= ~AI_NUMERICSERV;
#endif
printf("%x", ai_flags);
printf(")\n");
}
static inline void printsocktype(int ai_socktype)
{
printf("socktype: %d(", ai_socktype);
switch (ai_socktype)
{
case 0:
printf("SOCK_ Woe32");
break;
case SOCK_STREAM:
printf("SOCK_STREAM");
break;
case SOCK_DGRAM:
printf("SOCK_DGRAM");
break;
case SOCK_RAW:
printf("SOCK_RAW");
break;
default:
printf("SOCK_ERROR\n");
exit(-1);
}
printf(")\n");
}
static inline void printprotocol(int ai_protocol)
{
printf("protocol: %d(", ai_protocol);
switch (ai_protocol)
{
case IPPROTO_IP:
printf("IPPROTO_IP");
break;
case IPPROTO_TCP:
printf("IPPROTO_TCP");
break;
case IPPROTO_UDP:
printf("IPPROTO_UDP");
break;
default:
printf("IPPROTO_ERROR\n");
exit(-1);
}
printf(")\n");
}
static inline void printaddr(int ai_family, const struct sockaddr *ai_addr)
{
char str[INET_ADDRSTRLEN+1] = "FAKE";
printf("family: %d(", ai_family);
switch (ai_family)
{
case AF_UNSPEC:
printf("AF_UNSPEC");
break;
case AF_INET:
printf("AF_INET");
break;
#ifdef AF_INET6
case AF_INET6:
printf("AF_INET6");
break;
#endif
default:
printf("AF_ERROR\n");
exit(-1);
}
printf(")\n");
if (ai_family == AF_INET && ai_addr)
{
const struct sockaddr_in *ip4 = (void *)ai_addr;
#ifdef HAVE_NTOP
inet_ntop(ai_family, &ip4->sin_addr, str, INET_ADDRSTRLEN);
#else
strncpy(str, inet_ntoa(ip4->sin_addr), INET_ADDRSTRLEN);
#endif
printf("port: %d\n", ntohs(ip4->sin_port));
}
printf("addr: %s\n", str);
}
void printaddrinfo(const struct my_addrinfo *data)
{
if(data == NULL)
{
printf("no data\n");
return;
}
else
printf("starting addrinfo dump\n");
while (data != NULL)
{
printflags(data->ai_flags);
printsocktype(data->ai_socktype);
printaddr(data->ai_family, data->ai_addr);
printprotocol(data->ai_protocol);
//addrlen
data = data->ai_next;
}
}
int main(int argc, char **argv)
{
struct my_addrinfo *res = NULL, hints;
int gaie;
(void)argc;
(void)argv;
memset(&hints, 0x00, sizeof(struct my_addrinfo));
hints.ai_family = AF_INET;
#ifdef _WIN32
{
#ifdef USE_WINSOCK2
const WORD VerNeed = MAKEWORD(2,2);
#else
const WORD VerNeed = MAKEWORD(1,1);
#endif
WSADATA WSAData;
WSAStartup(VerNeed, &WSAData);
}
#endif
printf("-----------------------------------------------------------\n");
#ifndef _WIN32 //NULL as res crashes Win32
gaie = I_getaddrinfo(NULL, NULL, &hints, NULL);
if (gaie != EAI_NONAME)
printf("NULLs test returned: %s(%d)\n", gai_strerror(gaie), gaie);
I_freeaddrinfo(res);
#endif
#if 0 //NULL as res crashes
gaie = I_getaddrinfo("localhost", "5029", NULL, NULL);
if (gaie == 0)
printf("NULL crashes: %s(%d)\n", gai_strerror(gaie), gaie);
I_freeaddrinfo(res);
#endif
gaie = I_getaddrinfo("localhost", NULL, &hints, &res);
//if (gaie != 0)
printf("NULL service test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo(NULL, "5029", &hints, &res);
//if (gaie != 0)
printf("NULLs test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo("localhost", "5029", &hints, &res);
//if (gaie != 0)
printf("no hints test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
printf("-----------------------------------------------------------\n");
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
gaie = I_getaddrinfo("localhost", NULL, &hints, &res);
//if (gaie != 0)
printf("NULL service test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo(NULL, "5029", &hints, &res);
//if (gaie != 0)
printf("NULLs test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo("localhost", "5029", &hints, &res);
//if (gaie != 0)
printf("no hints test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
printf("-----------------------------------------------------------\n");
hints.ai_socktype = SOCK_DGRAM;
hints.ai_protocol = IPPROTO_UDP;
gaie = I_getaddrinfo("localhost", NULL, &hints, &res);
//if (gaie != 0)
printf("NULL service test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo(NULL, "5029", &hints, &res);
//if (gaie != 0)
printf("NULLs test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo("localhost", "5029", &hints, &res);
//if (gaie != 0)
printf("no hints test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
printf("-----------------------------------------------------------\n");
hints.ai_flags = AI_NUMERICHOST;
gaie = I_getaddrinfo("localhost", NULL, &hints, &res);
//if (gaie != 0)
printf("NULL service test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo(NULL, "5029", &hints, &res);
//if (gaie != 0)
printf("NULLs test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo("localhost", "5029", &hints, &res);
//if (gaie != 0)
printf("no hints test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
printf("-----------------------------------------------------------\n");
gaie = I_getaddrinfo("127.0.0.1", NULL, &hints, &res);
//if (gaie != 0)
printf("NULL service test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo("127.0.0.1", "5029", &hints, &res);
//if (gaie != 0)
printf("no hints test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
printf("-----------------------------------------------------------\n");
gaie = I_getaddrinfo("255.255.255.255", NULL, &hints, &res);
//if (gaie != 0)
printf("NULL service test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo("255.255.255.255", "5029", &hints, &res);
//if (gaie != 0)
printf("no hints test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
printf("-----------------------------------------------------------\n");
hints.ai_flags = AI_PASSIVE;
gaie = I_getaddrinfo("0.0.0.0", NULL, &hints, &res);
//if (gaie != 0)
printf("NULL service test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
gaie = I_getaddrinfo("0.0.0.0", "5029", &hints, &res);
//if (gaie != 0)
printf("no hints test returned: %s(%d)\n", gai_strerror(gaie), gaie);
printaddrinfo(res);
I_freeaddrinfo(res); res = NULL;
return 0;
}
#endif
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