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Kart-Public/src/i_addrinfo.c
toaster 97348beb66 Fix all compilation errors (tested using DEBUGMODE=1 and ERRORMODE=1) that remain outstanding. Notably: 
* Remove FUNCMATH from all void-returning functions, given GCC80 specifically complains about this case.
	* Extend the length of all extant buffers to the safety threshold recommended by the compiler.
	* Add void casts to WS_getaddrinfo's setting to prevent complaints about incompatible typecasts.
	* Extend the charsel, face, and superface buffer sizes and writes to include the null terminator. (I didn't really want to do this because it's not even particularily NEEDED, but there was literally zero way to get around the request that I could find with multiple online searches. I tried.)
2018-07-07 16:52:01 +01:00

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// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 2011-2016 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__) && !defined(_WII)
#include <sys/socket.h>
#ifndef _NDS
#include <arpa/inet.h>
#endif
#ifdef _PS3
#include <net/netdb.h>
#elif ! defined (_arch_dreamcast)
#include <netdb.h>
#endif
#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 *node, const char *service,
const struct my_addrinfo *hints,
struct my_addrinfo **res);
typedef void (WSAAPI *p_freeaddrinfo) (struct my_addrinfo *res);
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)((void *)GetProcAddress(tmp, "getaddrinfo"));
if (WS_getaddrinfo == NULL)
return NULL;
WS_freeaddrinfo = (p_freeaddrinfo)((void *)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;
#ifdef _PS3
addr[i].sin_len = famsize;
#endif
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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