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wine/dlls/wsock32/socket.c
Vincent Béron 9a62491660 Removed trailing whitespace.
2002-05-31 23:06:46 +00:00

997 lines
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/*
* WSOCK32 specific functions
*
* Copyright (C) 1993,1994,1996,1997 John Brezak, Erik Bos, Alex Korobka.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* FIXME: This hack is fixing a problem in WsControl. When we call socket(),
* it will call into ws2_32's WSOCK32_socket (because of the redirection in
* our own .spec file).
* The problem is that socket() is predefined in a linux system header that
* we are including, which is different from the WINE definition.
* (cdecl vs. stdapi). The result is stack corruption.
* Furthermore WsControl uses Unix macros and types. This forces us to include
* the Unix headers which then conflict with the winsock headers. This forces
* us to use USE_WS_PREFIX but then ioctlsocket is called WS_ioctlsocket,
* which causes link problems. The correct solution is to implement
* WsControl using calls to WSAIoctl. Then we should no longer need to use the
* Unix headers. This would also have the advantage of reducing code
* duplication.
* Until that happens we need this ugly hack.
*/
#define USE_WS_PREFIX
#define socket linux_socket
#define recv linux_recv
/* */
#include "config.h"
#include <errno.h>
#include <string.h>
#include <ctype.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_SYS_SOCKIO_H
# include <sys/sockio.h>
#endif
#ifdef HAVE_NET_IF_H
# include <net/if.h>
#endif
#include "windef.h"
#include "winbase.h"
#include "wine/debug.h"
#include "winsock2.h"
#include "winnt.h"
#include "wscontrol.h"
/* FIXME: The rest of the socket() cdecl<->stdapi stack corruption problem
* discussed above.
*/
#undef socket
#undef recv
extern SOCKET WINAPI socket(INT af, INT type, INT protocol);
extern SOCKET WINAPI recv(SOCKET,char*,int,int);
/* Plus some missing prototypes, due to the WS_ prefixing */
extern int WINAPI closesocket(SOCKET);
extern int WINAPI ioctlsocket(SOCKET,long,u_long*);
/* */
WINE_DEFAULT_DEBUG_CHANNEL(winsock);
/***********************************************************************
* WsControl (WSOCK32.1001)
*
* WsControl seems to be an undocumented Win95 function. A lot of
* discussion about WsControl can be found on the net, e.g.
* Subject: Re: WSOCK32.DLL WsControl Exported Function
* From: "Peter Rindfuss" <rindfuss-s@medea.wz-berlin.de>
* Date: 1997/08/17
*
* WSCNTL_TCPIP_QUERY_INFO option is partially implemeted based
* on observing the behaviour of WsControl with an app in
* Windows 98. It is not fully implemented, and there could
* be (are?) errors due to incorrect assumptions made.
*
*
* WsControl returns WSCTL_SUCCESS on success.
* STATUS_BUFFER_TOO_SMALL is returned if the output buffer length
* (*pcbResponseInfoLen) is too small, otherwise errors return -1.
*
* It doesn't seem to generate errors that can be retrieved by
* WSAGetLastError().
*
*/
DWORD WINAPI WsControl(DWORD protocoll,
DWORD action,
LPVOID pRequestInfo,
LPDWORD pcbRequestInfoLen,
LPVOID pResponseInfo,
LPDWORD pcbResponseInfoLen)
{
/* Get the command structure into a pointer we can use,
rather than void */
TDIObjectID *pcommand = (TDIObjectID *)pRequestInfo;
TRACE (" WsControl TOI_ID=>0x%lx<, {TEI_ENTITY=0x%lx, TEI_INSTANCE=0x%lx}, TOI_CLASS=0x%lx, TOI_TYPE=0x%lx\n",
pcommand->toi_id, pcommand->toi_entity.tei_entity, pcommand->toi_entity.tei_instance,
pcommand->toi_class, pcommand->toi_type );
switch (action)
{
case WSCNTL_TCPIP_QUERY_INFO:
{
switch (pcommand->toi_id)
{
/*
ENTITY_LIST_ID seems to get number of adapters in the system.
(almost like an index to be used when calling other WsControl options)
*/
case ENTITY_LIST_ID:
{
TDIEntityID *baseptr = pResponseInfo;
int numInt = 0, i;
if (pcommand->toi_class != INFO_CLASS_GENERIC &&
pcommand->toi_type != INFO_TYPE_PROVIDER)
{
FIXME ("Unexpected Option for ENTITY_LIST_ID request -> toi_class=0x%lx, toi_type=0x%lx\n",
pcommand->toi_class, pcommand->toi_type);
return (WSAEOPNOTSUPP);
}
numInt = WSCNTL_GetEntryCount(WSCNTL_COUNT_INTERFACES);
if (numInt < 0)
{
ERR ("Unable to open /proc filesystem to determine number of network interfaces!\n");
return (-1);
}
if (*pcbResponseInfoLen < sizeof(TDIEntityID)*(numInt*2) )
{
return (STATUS_BUFFER_TOO_SMALL);
}
/* 0 it out first */
memset(baseptr, 0, sizeof(TDIEntityID)*(numInt*2));
for (i=0; i<numInt; i++)
{
/* tei_instance is an network interface identifier.
I'm not quite sure what the difference is between tei_entity values of
CL_NL_ENTITY and IF_ENTITY */
baseptr->tei_entity = CL_NL_ENTITY; baseptr->tei_instance = i; baseptr++;
baseptr->tei_entity = IF_ENTITY; baseptr->tei_instance = i; baseptr++;
}
/* Calculate size of out buffer */
*pcbResponseInfoLen = sizeof(TDIEntityID)*(numInt*2);
break;
}
/* ENTITY_TYPE_ID is used to obtain simple information about a
network card, such as MAC Address, description, interface type,
number of network addresses, etc. */
case ENTITY_TYPE_ID: /* ALSO: IP_MIB_STATS_ID */
{
if (pcommand->toi_class == INFO_CLASS_GENERIC && pcommand->toi_type == INFO_TYPE_PROVIDER)
{
if (pcommand->toi_entity.tei_entity == IF_ENTITY)
{
* ((ULONG *)pResponseInfo) = IF_MIB;
/* Calculate size of out buffer */
*pcbResponseInfoLen = sizeof (ULONG);
}
else if (pcommand->toi_entity.tei_entity == CL_NL_ENTITY)
{
* ((ULONG *)pResponseInfo) = CL_NL_IP;
/* Calculate size of out buffer */
*pcbResponseInfoLen = sizeof (ULONG);
}
}
else if (pcommand->toi_class == INFO_CLASS_PROTOCOL &&
pcommand->toi_type == INFO_TYPE_PROVIDER)
{
if (pcommand->toi_entity.tei_entity == IF_ENTITY)
{
/* In this case, we are requesting specific information about a
a particular network adapter. (MAC Address, speed, data transmitted/received,
etc.)
*/
IFEntry *IntInfo = (IFEntry *) pResponseInfo;
char ifName[512];
#if defined(SIOCGIFHWADDR) || defined(SIOCGENADDR)
struct ifreq ifInfo;
#endif
SOCKET sock;
if (!WSCNTL_GetInterfaceName(pcommand->toi_entity.tei_instance, ifName))
{
ERR ("Unable to parse /proc filesystem!\n");
return (-1);
}
/* Get a socket so that we can use ioctl */
if ( (sock = socket(AF_INET, SOCK_DGRAM, 0)) == INVALID_SOCKET)
{
ERR ("Error creating socket!\n");
return (-1);
}
/* 0 out return structure first */
memset (IntInfo, 0, sizeof(IFEntry));
/* Interface ID */
IntInfo->if_index = pcommand->toi_entity.tei_instance;
/* MAC Address - Let's try to do this in a cross-platform way... */
#if defined(SIOCGIFHWADDR) /* Linux */
strcpy(ifInfo.ifr_name, ifName);
if (ioctlsocket(sock, SIOCGIFHWADDR, (ULONG*)&ifInfo) < 0)
{
ERR ("Error obtaining MAC Address!\n");
closesocket(sock);
return (-1);
}
else
{
/* FIXME: Is it correct to assume size of 6? */
memcpy(IntInfo->if_physaddr, ifInfo.ifr_hwaddr.sa_data, 6);
IntInfo->if_physaddrlen=6;
}
#elif defined(SIOCGENADDR) /* Solaris */
if (ioctlsocket(sock, SIOCGENADDR, (ULONG*)&ifInfo) < 0)
{
ERR ("Error obtaining MAC Address!\n");
closesocket(sock);
return (-1);
}
else
{
/* FIXME: Is it correct to assume size of 6? */
memcpy(IntInfo->if_physaddr, ifInfo.ifr_enaddr, 6);
IntInfo->if_physaddrlen=6;
}
#else
memset (IntInfo->if_physaddr, 0, 6);
ERR ("Unable to determine MAC Address on your platform!\n");
#endif
/* Interface name and length */
strcpy (IntInfo->if_descr, ifName);
IntInfo->if_descrlen= strlen (IntInfo->if_descr);
/* Obtain bytes transmitted/received for interface */
if ( (WSCNTL_GetTransRecvStat(pcommand->toi_entity.tei_instance,
&IntInfo->if_inoctets, &IntInfo->if_outoctets)) < 0)
{
ERR ("Error obtaining transmit/receive stats for the network interface!\n");
closesocket(sock);
return (-1);
}
/* FIXME: How should the below be properly calculated? ******************/
IntInfo->if_type = 0x6; /* Ethernet (?) */
IntInfo->if_speed = 1000000; /* Speed of interface (bits per second?) */
/************************************************************************/
closesocket(sock);
*pcbResponseInfoLen = sizeof (IFEntry) + IntInfo->if_descrlen;
}
else if (pcommand->toi_entity.tei_entity == CL_NL_ENTITY)
{
IPSNMPInfo *infoStruc = (IPSNMPInfo *) pResponseInfo;
int numInt, numRoutes;
/* This case is used to obtain general statistics about the
network */
if (*pcbResponseInfoLen < sizeof(IPSNMPInfo) )
{
return (STATUS_BUFFER_TOO_SMALL);
}
else
{
/* 0 it out first */
memset(infoStruc, 0, sizeof(IPSNMPInfo));
/* Get the number of interfaces */
numInt = WSCNTL_GetEntryCount(WSCNTL_COUNT_INTERFACES);
if (numInt < 0)
{
ERR ("Unable to open /proc filesystem to determine number of network interfaces!\n");
return (-1);
}
/* Get the number of routes */
numRoutes = WSCNTL_GetEntryCount(WSCNTL_COUNT_ROUTES);
if (numRoutes < 0)
{
ERR ("Unable to open /proc filesystem to determine number of network routes!\n");
return (-1);
}
infoStruc->ipsi_numif = numInt; /* # of interfaces */
infoStruc->ipsi_numaddr = numInt; /* # of addresses */
infoStruc->ipsi_numroutes = numRoutes; /* # of routes */
/* FIXME: How should the below be properly calculated? ******************/
infoStruc->ipsi_forwarding = 0x0;
infoStruc->ipsi_defaultttl = 0x0;
infoStruc->ipsi_inreceives = 0x0;
infoStruc->ipsi_inhdrerrors = 0x0;
infoStruc->ipsi_inaddrerrors = 0x0;
infoStruc->ipsi_forwdatagrams = 0x0;
infoStruc->ipsi_inunknownprotos = 0x0;
infoStruc->ipsi_indiscards = 0x0;
infoStruc->ipsi_indelivers = 0x0;
infoStruc->ipsi_outrequests = 0x0;
infoStruc->ipsi_routingdiscards = 0x0;
infoStruc->ipsi_outdiscards = 0x0;
infoStruc->ipsi_outnoroutes = 0x0;
infoStruc->ipsi_reasmtimeout = 0x0;
infoStruc->ipsi_reasmreqds = 0x0;
infoStruc->ipsi_reasmoks = 0x0;
infoStruc->ipsi_reasmfails = 0x0;
infoStruc->ipsi_fragoks = 0x0;
infoStruc->ipsi_fragfails = 0x0;
infoStruc->ipsi_fragcreates = 0x0;
/************************************************************************/
/* Calculate size of out buffer */
*pcbResponseInfoLen = sizeof(IPSNMPInfo);
}
}
}
else
{
FIXME ("Unexpected Option for ENTITY_TYPE_ID request -> toi_class=0x%lx, toi_type=0x%lx\n",
pcommand->toi_class, pcommand->toi_type);
return (WSAEOPNOTSUPP);
}
break;
}
/* IP_MIB_ADDRTABLE_ENTRY_ID is used to obtain more detailed information about a
particular network adapter */
case IP_MIB_ADDRTABLE_ENTRY_ID:
{
IPAddrEntry *baseIPInfo = (IPAddrEntry *) pResponseInfo;
char ifName[IFNAMSIZ+1];
struct ifreq ifInfo;
SOCKET sock;
if (*pcbResponseInfoLen < sizeof(IPAddrEntry))
{
return (STATUS_BUFFER_TOO_SMALL);
}
if (!WSCNTL_GetInterfaceName(pcommand->toi_entity.tei_instance, ifName))
{
ERR ("Unable to parse /proc filesystem!\n");
return (-1);
}
/* Get a socket so we can use ioctl */
if ( (sock = socket(AF_INET, SOCK_DGRAM, 0)) == INVALID_SOCKET)
{
ERR ("Error creating socket!\n");
return (-1);
}
/* 0 it out first */
memset(baseIPInfo, 0, sizeof(IPAddrEntry) );
/* Interface Id */
baseIPInfo->iae_index = pcommand->toi_entity.tei_instance;
/* IP Address */
strcpy (ifInfo.ifr_name, ifName);
ifInfo.ifr_addr.sa_family = AF_INET;
if (ioctlsocket(sock, SIOCGIFADDR, (ULONG*)&ifInfo) < 0)
{
baseIPInfo->iae_addr = 0x0;
}
else
{
struct WS_sockaddr_in* ipTemp = (struct WS_sockaddr_in*)&ifInfo.ifr_addr;
baseIPInfo->iae_addr = ipTemp->sin_addr.S_un.S_addr;
}
/* Broadcast Address */
strcpy (ifInfo.ifr_name, ifName);
if (ioctlsocket(sock, SIOCGIFBRDADDR, (ULONG *)&ifInfo) < 0)
{
baseIPInfo->iae_bcastaddr = 0x0;
}
else
{
struct WS_sockaddr_in* ipTemp = (struct WS_sockaddr_in*)&ifInfo.ifr_broadaddr;
baseIPInfo->iae_bcastaddr = ipTemp->sin_addr.S_un.S_addr;
}
/* Subnet Mask */
strcpy(ifInfo.ifr_name, ifName);
if (ioctlsocket(sock, SIOCGIFNETMASK, (ULONG *)&ifInfo) < 0)
{
baseIPInfo->iae_mask = 0x0;
}
else
{
/* Trying to avoid some compile problems across platforms.
(Linux, FreeBSD, Solaris...) */
#ifndef ifr_netmask
#ifndef ifr_addr
baseIPInfo->iae_mask = 0;
ERR ("Unable to determine Netmask on your platform!\n");
#else
struct WS_sockaddr_in* ipTemp = (struct WS_sockaddr_in*)&ifInfo.ifr_addr;
baseIPInfo->iae_mask = ipTemp->sin_addr.S_un.S_addr;
#endif
#else
struct WS_sockaddr_in* ipTemp = (struct WS_sockaddr_in*)&ifInfo.ifr_netmask;
baseIPInfo->iae_mask = ipTemp->sin_addr.S_un.S_addr;
#endif
}
/* FIXME: How should the below be properly calculated? ******************/
baseIPInfo->iae_reasmsize = 0x0;
baseIPInfo->iae_context = 0x0;
baseIPInfo->iae_pad = 0x0;
/************************************************************************/
/* Calculate size of out buffer */
*pcbResponseInfoLen = sizeof(IPAddrEntry);
closesocket(sock);
break;
}
/* This call returns the routing table.
* No official documentation found, even the name of the command is unknown.
* Work is based on
* http://www.cyberport.com/~tangent/programming/winsock/articles/wscontrol.html
* and testings done with winipcfg.exe, route.exe and ipconfig.exe.
* pcommand->toi_entity.tei_instance seems to be the interface number
* but route.exe outputs only the information for the last interface
* if only the routes for the pcommand->toi_entity.tei_instance
* interface are returned. */
case IP_MIB_ROUTETABLE_ENTRY_ID: /* FIXME: not real name. Value is 0x101 */
{
int numRoutes, foundRoutes;
wscntl_routeentry *routeTable, *routePtr; /* route table */
IPRouteEntry *winRouteTable = (IPRouteEntry *) pResponseInfo;
/* Get the number of routes */
numRoutes = WSCNTL_GetEntryCount(WSCNTL_COUNT_ROUTES);
if (numRoutes < 0)
{
ERR ("Unable to open /proc filesystem to determine number of network routes!\n");
return (-1);
}
if (*pcbResponseInfoLen < (sizeof(IPRouteEntry) * numRoutes))
{
return (STATUS_BUFFER_TOO_SMALL);
}
/* malloc space for the routeTable */
routeTable = (wscntl_routeentry *) malloc(sizeof(wscntl_routeentry) * numRoutes);
if (!routeTable)
{
ERR ("couldn't malloc space for routeTable!\n");
}
/* get the route table */
foundRoutes = WSCNTL_GetRouteTable(numRoutes, routeTable);
if (foundRoutes < 0)
{
ERR ("Unable to open /proc filesystem to parse the route entries!\n");
free(routeTable);
return -1;
}
routePtr = routeTable;
/* first 0 out the output buffer */
memset(winRouteTable, 0, *pcbResponseInfoLen);
/* calculate the length of the data in the output buffer */
*pcbResponseInfoLen = sizeof(IPRouteEntry) * foundRoutes;
for ( ; foundRoutes > 0; foundRoutes--)
{
winRouteTable->ire_addr = routePtr->wre_dest;
winRouteTable->ire_index = routePtr->wre_intf;
winRouteTable->ire_metric = routePtr->wre_metric;
/* winRouteTable->ire_option4 =
winRouteTable->ire_option5 =
winRouteTable->ire_option6 = */
winRouteTable->ire_gw = routePtr->wre_gw;
/* winRouteTable->ire_option8 =
winRouteTable->ire_option9 =
winRouteTable->ire_option10 = */
winRouteTable->ire_mask = routePtr->wre_mask;
/* winRouteTable->ire_option12 = */
winRouteTable++;
routePtr++;
}
free(routeTable);
break;
}
default:
{
FIXME ("Command ID Not Supported -> toi_id=0x%lx, toi_entity={tei_entity=0x%lx, tei_instance=0x%lx}, toi_class=0x%lx, toi_type=0x%lx\n",
pcommand->toi_id, pcommand->toi_entity.tei_entity, pcommand->toi_entity.tei_instance,
pcommand->toi_class, pcommand->toi_type);
return (WSAEOPNOTSUPP);
}
}
break;
}
case WSCNTL_TCPIP_ICMP_ECHO:
{
unsigned int addr = *(unsigned int*)pRequestInfo;
#if 0
int timeout= *(unsigned int*)(inbuf+4);
short x1 = *(unsigned short*)(inbuf+8);
short sendbufsize = *(unsigned short*)(inbuf+10);
char x2 = *(unsigned char*)(inbuf+12);
char ttl = *(unsigned char*)(inbuf+13);
char service = *(unsigned char*)(inbuf+14);
char type= *(unsigned char*)(inbuf+15); /* 0x2: don't fragment*/
#endif
FIXME("(ICMP_ECHO) to 0x%08x stub \n", addr);
break;
}
default:
{
FIXME("Protocoll Not Supported -> protocoll=0x%lx, action=0x%lx, Request=%p, RequestLen=%p, Response=%p, ResponseLen=%p\n",
protocoll, action, pRequestInfo, pcbRequestInfoLen, pResponseInfo, pcbResponseInfoLen);
return (WSAEOPNOTSUPP);
}
}
return (WSCTL_SUCCESS);
}
/*
Helper function for WsControl - Get count of the number of interfaces
or routes by parsing /proc filesystem.
*/
int WSCNTL_GetEntryCount(const int entrytype)
{
char *filename;
int fd;
char buf[512]; /* Size optimized for a typical workstation */
char *ptr;
int count;
int chrread;
switch (entrytype)
{
case WSCNTL_COUNT_INTERFACES:
{
filename = PROCFS_NETDEV_FILE;
count = -2; /* two haeder lines */
break;
};
case WSCNTL_COUNT_ROUTES:
{
filename = PROCFS_ROUTE_FILE;
count = -1; /* one haeder line */
break;
};
default:
{
return -1;
};
}
/* open /proc filesystem file */
fd = open(filename, O_RDONLY);
if (fd < 0) {
return -1;
}
/* read the file and count the EOL's */
while ((chrread = read(fd, buf, sizeof(buf))) != 0)
{
ptr = buf;
if (chrread < 0)
{
if (errno == EINTR)
{
continue; /* read interupted by a signal, try to read again */
}
else
{
close(fd);
return -1;
}
}
while ((ptr = memchr(ptr, '\n', chrread - (int) (ptr - buf))) > 0)
{
count++;
ptr++;
}
}
close(fd);
return count;
}
/*
Helper function for WsControl - Get name of device from interface number
by parsing /proc filesystem.
*/
int WSCNTL_GetInterfaceName(int intNumber, char *intName)
{
FILE *procfs;
char buf[512]; /* Size doesn't matter, something big */
int i;
/* Open /proc filesystem file for network devices */
procfs = fopen(PROCFS_NETDEV_FILE, "r");
if (!procfs)
{
/* If we can't open the file, return an error */
return (-1);
}
/* Omit first two lines, they are only headers */
fgets(buf, sizeof(buf), procfs);
fgets(buf, sizeof(buf), procfs);
for (i=0; i<intNumber; i++)
{
/* Skip the lines that don't interest us. */
fgets(buf, sizeof(buf), procfs);
}
fgets(buf, sizeof(buf), procfs); /* This is the line we want */
/* Parse out the line, grabbing only the name of the device
to the intName variable
The Line comes in like this: (we only care about the device name)
lo: 21970 377 0 0 0 0 0 0 21970 377 0 0 0 0 0 0
*/
i=0;
while (isspace(buf[i])) /* Skip initial space(s) */
{
i++;
}
while (buf[i])
{
if (isspace(buf[i]))
{
break;
}
if (buf[i] == ':') /* FIXME: Not sure if this block (alias detection) works properly */
{
/* This interface could be an alias... */
int hold = i;
char *dotname = intName;
*intName++ = buf[i++];
while (isdigit(buf[i]))
{
*intName++ = buf[i++];
}
if (buf[i] != ':')
{
/* ... It wasn't, so back up */
i = hold;
intName = dotname;
}
if (buf[i] == '\0')
{
fclose(procfs);
return(FALSE);
}
i++;
break;
}
*intName++ = buf[i++];
}
*intName++ = '\0';
fclose(procfs);
return(TRUE);
}
/*
Helper function for WsControl - This function returns the bytes (octets) transmitted
and received for the supplied interface number from the /proc fs.
*/
int WSCNTL_GetTransRecvStat(int intNumber, unsigned long *transBytes, unsigned long *recvBytes)
{
FILE *procfs;
char buf[512], result[512]; /* Size doesn't matter, something big */
int i, bufPos, resultPos;
/* Open /proc filesystem file for network devices */
procfs = fopen(PROCFS_NETDEV_FILE, "r");
if (!procfs)
{
/* If we can't open the file, return an error */
return (-1);
}
/* Omit first two lines, they are only headers */
fgets(buf, sizeof(buf), procfs);
fgets(buf, sizeof(buf), procfs);
for (i=0; i<intNumber; i++)
{
/* Skip the lines that don't interest us. */
fgets(buf, sizeof(buf), procfs);
}
fgets(buf, sizeof(buf), procfs); /* This is the line we want */
/* Parse out the line, grabbing the number of bytes transmitted
and received on the interface.
The Line comes in like this: (we care about columns 2 and 10)
lo: 21970 377 0 0 0 0 0 0 21970 377 0 0 0 0 0 0
*/
/* Start at character 0 in the buffer */
bufPos=0;
/* Skip initial space(s) */
while (isspace(buf[bufPos]))
bufPos++;
/* Skip the name and its trailing spaces (if any) */
while (buf[bufPos])
{
if (isspace(buf[bufPos]))
break;
if (buf[bufPos] == ':') /* Could be an alias */
{
int hold = bufPos;
while(isdigit (buf[bufPos]))
bufPos++;
if (buf[bufPos] != ':')
bufPos = hold;
if (buf[bufPos] == '\0')
{
fclose(procfs);
return(FALSE);
}
bufPos++;
break;
}
bufPos++;
}
while (isspace(buf[bufPos]))
bufPos++;
/* This column (#2) is the number of bytes received. */
resultPos = 0;
while (!isspace(buf[bufPos]))
{
result[resultPos] = buf[bufPos];
result[resultPos+1]='\0';
resultPos++; bufPos++;
}
*recvBytes = strtoul (result, NULL, 10); /* convert string to unsigned long, using base 10 */
/* Skip columns #3 to #9 (Don't need them) */
for (i=0; i<7; i++)
{
while (isspace(buf[bufPos]))
bufPos++;
while (!isspace(buf[bufPos]))
bufPos++;
}
/* This column (#10) is the number of bytes transmitted */
while (isspace(buf[bufPos]))
bufPos++;
resultPos = 0;
while (!isspace(buf[bufPos]))
{
result[resultPos] = buf[bufPos];
result[resultPos+1]='\0';
resultPos++; bufPos++;
}
*transBytes = strtoul (result, NULL, 10); /* convert string to unsigned long, using base 10 */
fclose(procfs);
return(TRUE);
}
/* Parse the procfs route file and put the datas into routeTable.
* Return value is the number of found routes */
int WSCNTL_GetRouteTable(int numRoutes, wscntl_routeentry *routeTable)
{
int nrIntf; /* total number of interfaces */
char buf[256]; /* temporary buffer */
char *ptr; /* pointer to temporary buffer */
FILE *file; /* file handle for procfs route file */
int foundRoutes = 0; /* number of found routes */
typedef struct interface_t {
char intfName[IFNAMSIZ+1]; /* the name of the interface */
int intfNameLen; /* length of interface name */
} interface_t;
interface_t *interface;
int intfNr; /* the interface number */
wscntl_routeentry *routePtr = routeTable;
/* get the number of interfaces */
nrIntf = WSCNTL_GetEntryCount(WSCNTL_COUNT_INTERFACES);
if (nrIntf < 0)
{
ERR ("Unable to open /proc filesystem to determine number of network interfaces!\n");
return (-1);
}
/* malloc space for the interface struct array */
interface = (interface_t *) malloc(sizeof(interface_t) * nrIntf);
if (!routeTable)
{
ERR ("couldn't malloc space for interface!\n");
}
for (intfNr = 0; intfNr < nrIntf; intfNr++) {
if (WSCNTL_GetInterfaceName(intfNr, interface[intfNr].intfName) < 0)
{
ERR ("Unable to open /proc filesystem to determine the name of network interfaces!\n");
free(interface);
return (-1);
}
interface[intfNr].intfNameLen = strlen(interface[intfNr].intfName);
}
/* Open /proc filesystem file for routes */
file = fopen(PROCFS_ROUTE_FILE, "r");
if (!file)
{
/* If we can't open the file, return an error */
free(interface);
return (-1);
}
/* skip the header line */
fgets(buf, sizeof(buf), file);
/* parse the rest of the file and put the matching entries into routeTable.
Format of procfs route entry:
Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
lo 0000007F 00000000 0001 0 0 0 000000FF 0 0 0
*/
while (fgets(buf, sizeof(buf), file)) {
intfNr = 0;
/* find the interface of the route */
while ((strncmp(buf, interface[intfNr].intfName, interface[intfNr].intfNameLen) != 0)
&& (intfNr < nrIntf))
{
intfNr++;
}
if (intfNr < nrIntf) {
foundRoutes++;
if (foundRoutes > numRoutes) {
/* output buffer is to small */
ERR("buffer to small to fit all routes found into it!\n");
free(interface);
fclose(file);
return -1;
}
ptr = buf;
ptr += interface[intfNr].intfNameLen;
routePtr->wre_intf = intfNr;
routePtr->wre_dest = strtoul(ptr, &ptr, 16); /* destination */
routePtr->wre_gw = strtoul(ptr, &ptr, 16); /* gateway */
strtoul(ptr, &ptr, 16); /* Flags; unused */
strtoul(ptr, &ptr, 16); /* RefCnt; unused */
strtoul(ptr, &ptr, 16); /* Use; unused */
routePtr->wre_metric = strtoul(ptr, &ptr, 16); /* metric */
routePtr->wre_mask = strtoul(ptr, &ptr, 16); /* mask */
/* strtoul(ptr, &ptr, 16); MTU; unused */
/* strtoul(ptr, &ptr, 16); Window; unused */
/* strtoul(ptr, &ptr, 16); IRTT; unused */
routePtr++;
}
else
{
/* this should never happen */
WARN("Skipping route with unknown interface\n");
}
}
free(interface);
fclose(file);
return foundRoutes;
}
/***********************************************************************
* WSARecvEx (WSOCK32.1107)
*
* WSARecvEx is a Microsoft specific extension to winsock that is identical to recv
* except that has an in/out argument call flags that has the value MSG_PARTIAL ored
* into the flags parameter when a partial packet is read. This only applies to
* sockets using the datagram protocol. This method does not seem to be implemented
* correctly by microsoft as the winsock implementation does not set the MSG_PARTIAL
* flag when a fragmented packet arrives.
*/
INT WINAPI WSARecvEx(SOCKET s, char *buf, INT len, INT *flags)
{
FIXME("(WSARecvEx) partial packet return value not set \n");
return recv(s, buf, len, *flags);
}
/***********************************************************************
* s_perror (WSOCK32.1108)
*/
void WINAPI s_perror(LPCSTR message)
{
FIXME("(%s): stub\n",message);
return;
}
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