/*
* Acess2 IP Stack
- * - Address Resolution Protocol
+ * - Stack Initialisation
*/
+#define DEBUG 0
+#define VERSION VER2(0,10)
#include "ipstack.h"
+#include "link.h"
#include <modules.h>
#include <fs_devfs.h>
// === IMPORTS ===
- int ARP_Initialise();
+extern int ARP_Initialise();
+extern void UDP_Initialise();
+extern void TCP_Initialise();
+extern int IPv4_Initialise();
+extern int IPv6_Initialise();
+
+extern tAdapter *IPStack_GetAdapter(const char *Path);
+extern char *IPStack_Root_ReadDir(tVFS_Node *Node, int Pos);
+extern tVFS_Node *IPStack_Root_FindDir(tVFS_Node *Node, const char *Name);
+extern int IPStack_Root_IOCtl(tVFS_Node *Node, int ID, void *Data);
+extern tInterface gIP_LoopInterface;
+extern tInterface *IPStack_AddInterface(const char *Device, const char *Name);
+extern tRoute *IPStack_AddRoute(const char *Interface, void *Network, int SubnetBits, void *NextHop, int Metric);
// === PROTOTYPES ===
int IPStack_Install(char **Arguments);
-char *IPStack_ReadDir(tVFS_Node *Node, int Pos);
-tVFS_Node *IPStack_FindDir(tVFS_Node *Node, char *Name);
+ int IPStack_CompareAddress(int AddressType, const void *Address1, const void *Address2, int CheckBits);
// === GLOBALS ===
-MODULE_DEFINE(0, 0x000A, IPStack, IPStack_Install, NULL);
+MODULE_DEFINE(0, VERSION, IPStack, IPStack_Install, NULL, NULL);
+tVFS_NodeType gIP_RootNodeType = {
+ .ReadDir = IPStack_Root_ReadDir,
+ .FindDir = IPStack_Root_FindDir,
+ .IOCtl = IPStack_Root_IOCtl
+};
tDevFS_Driver gIP_DriverInfo = {
NULL, "ip",
{
+ .Size = -1, // Number of interfaces
.NumACLs = 1,
.ACLs = &gVFS_ACL_EveryoneRX,
.Flags = VFS_FFLAG_DIRECTORY,
- .ReadDir = IPStack_ReadDir,
- .FindDir = IPStack_FindDir
+ .Type = &gIP_RootNodeType
}
};
- int giIP_NumInterfaces;
-tInterface *gIP_Interfaces = NULL;
// === CODE ===
/**
{
int i = 0;
- // Install Handlers
+ // Layer 3 - Network Layer Protocols
ARP_Initialise();
+ IPv4_Initialise();
+ IPv6_Initialise();
+ // Layer 4 - Transport Layer Protocols
+ TCP_Initialise();
+ UDP_Initialise();
- // Parse module arguments
- for( i = 0; Arguments[i]; i++ )
+ if(Arguments)
{
- //if(strcmp(Arguments[i], "Device") == '=') {
- //
- //}
+ // Parse module arguments
+ for( i = 0; Arguments[i]; i++ )
+ {
+ // TODO:
+ // Define interfaces by <Device>:<Type>:<HexStreamAddress>:<Bits>
+ // Where:
+ // - <Device> is the device path (E.g. /Devices/ne2k/0)
+ // - <Type> is a number (e.g. 4) or symbol (e.g. AF_INET4)
+ // - <HexStreamAddress> is a condensed hexadecimal stream (in big endian)
+ // (E.g. 0A000201 for 10.0.2.1 IPv4)
+ // - <Bits> is the number of subnet bits (E.g. 24 for an IPv4 Class C)
+ // Example: /Devices/ne2k/0:4:0A00020A:24
+ // would define an interface with the address 10.0.2.10/24
+ if( Arguments[i][0] == '/' ) {
+ // Define Interface
+ char *dev, *type, *addr, *bits;
+
+ // Read definition
+ dev = Arguments[i];
+ type = strchr(dev, ':');
+ if( !type ) {
+ Log_Warning("IPStack", "<Device>:<Type>:<HexStreamAddress>:<Bits>");
+ continue;
+ }
+ *type = '\0'; type ++;
+
+ addr = strchr(type, ':');
+ if( !addr ) {
+ Log_Warning("IPStack", "<Device>:<Type>:<HexStreamAddress>:<Bits>");
+ continue;
+ }
+ *addr = '\0'; addr ++;
+
+ bits = strchr(addr, ':');
+ if( !bits ) {
+ Log_Warning("IPStack", "<Device>:<Type>:<HexStreamAddress>:<Bits>");
+ continue;
+ }
+ *bits = '\0'; bits ++;
+
+ // Define interface
+ {
+ int iType = atoi(type);
+ int size = IPStack_GetAddressSize(iType);
+ Uint8 addrData[size];
+ int iBits = atoi(bits);
+
+ UnHex(addrData, size, addr);
+
+ tInterface *iface = IPStack_AddInterface(dev, "");
+ if( !iface ) {
+ Log_Warning("IPStack", "Unable to add interface on '%s'", dev);
+ continue ;
+ }
+ iface->Type = iType;
+ memcpy(iface->Address, addrData, size);
+ iface->SubnetBits = iBits;
+
+ // Route for addrData/iBits, no next hop, default metric
+ IPStack_AddRoute(iface->Name, iface->Address, iBits, NULL, 0);
+
+ Log_Notice("IPStack", "Boot interface %s/%i on %s",
+ IPStack_PrintAddress(iType, addrData), iBits,
+ dev);
+ }
+
+ continue;
+ }
+
+ // I could also define routes using <Interface>:<HexStreamNetwork>:<Bits>[:<HexStreamGateway>]
+ // Example: 1:00000000:0:0A000201
+ if( '0' <= Arguments[i][0] && Arguments[i][0] <= '9' )
+ {
+ // Define Interface
+ char *ifaceName, *network, *bits, *gateway;
+
+ // Read definition
+ ifaceName = Arguments[i];
+
+ network = strchr(ifaceName, ':');
+ if( !network ) {
+ Log_Warning("IPStack", "<iface>:<HexStreamNetwork>:<Bits>:<HexStreamGateway>");
+ continue;
+ }
+ *network = '\0'; network ++;
+
+ bits = strchr(network, ':');
+ if( !bits ) {
+ Log_Warning("IPStack", "<Device>:<Type>:<HexStreamAddress>:<Bits>");
+ continue;
+ }
+ *bits = '\0'; bits ++;
+
+ gateway = strchr(bits, ':');
+ if( gateway ) {
+ *gateway = '\0'; gateway ++;
+ }
+
+ // Define route
+ {
+ tVFS_Node *node = IPStack_Root_FindDir(NULL, ifaceName);
+ if( !node ) {
+ Log_Warning("IPStack", "Unknown interface '%s' in arg %i", ifaceName, i);
+ continue ;
+ }
+ tInterface *iface = node->ImplPtr;
+
+ int size = IPStack_GetAddressSize(iface->Type);
+ Uint8 netData[size];
+ Uint8 gwData[size];
+ int iBits = atoi(bits);
+
+ UnHex(netData, size, network);
+ if( gateway )
+ UnHex(gwData, size, gateway);
+ else
+ memset(gwData, 0, size);
+
+ IPStack_AddRoute(ifaceName, netData, iBits, gwData, 30);
+ }
+
+ continue;
+ }
+ }
}
- return 1;
+ // Initialise loopback interface
+ gIP_LoopInterface.Adapter = IPStack_GetAdapter("LOOPBACK");
+
+ DevFS_AddDevice( &gIP_DriverInfo );
+
+ return MODULE_ERR_OK;
}
/**
- * \brief Read from the IP Stack's Device Directory
+ * \brief Gets the size (in bytes) of a specified form of address
*/
-char *IPStack_ReadDir(tVFS_Node *Node, int Pos)
+int IPStack_GetAddressSize(int AddressType)
{
- tInterface *iface;
- char name[5] = "ip0\0\0";
+ switch(AddressType)
+ {
+ case -1: // -1 = maximum
+ return sizeof(tIPv6);
- // Create the name
- if(Pos < 10)
- name[2] = '0' + Pos;
- else {
- name[2] = '0' + Pos/10;
- name[3] = '0' + Pos%10;
+ case AF_NULL:
+ return 0;
+
+ case AF_INET4:
+ return sizeof(tIPv4);
+ case AF_INET6:
+ return sizeof(tIPv6);
+
+ default:
+ return 0;
}
+}
+
+/**
+ * \brief Compare two IP Addresses masked by CheckBits
+ */
+int IPStack_CompareAddress(int AddressType, const void *Address1, const void *Address2, int CheckBits)
+{
+ int size = IPStack_GetAddressSize(AddressType);
+ Uint8 mask;
+ const Uint8 *addr1 = Address1, *addr2 = Address2;
+
+ // Sanity check size
+ if( CheckBits < 0 ) CheckBits = size*8;
+ if( CheckBits > size*8 ) CheckBits = size*8;
+
+ if( CheckBits == 0 ) return 1; // /0 matches anything
- // Traverse the list
- for( iface = gIP_Interfaces; iface && Pos--; iface = iface->Next ) ;
+ // Check first bits/8 bytes
+ if( memcmp(Address1, Address2, CheckBits/8) != 0 ) return 0;
- // Did we run off the end?
- if(!iface) return NULL;
+ // Check if the mask is a multiple of 8
+ if( CheckBits % 8 == 0 ) return 1;
- // Return the pre-generated name
- return strdup(name);
+ // Check last bits
+ mask = 0xFF << (8 - (CheckBits % 8));
+ if( (addr1[CheckBits/8] & mask) == (addr2[CheckBits/8] & mask) )
+ return 1;
+
+ return 0;
}
-/**
- * \brief Get the node of an interface
- */
-tVFS_Node *IPStack_FindDir(tVFS_Node *Node, char *Name)
+const char *IPStack_PrintAddress(int AddressType, const void *Address)
{
- return NULL;
+ switch( AddressType )
+ {
+ case 4: {
+ static char ret[4*3+3+1];
+ const Uint8 *addr = Address;
+ sprintf(ret, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
+ return ret;
+ }
+
+ case 6: { // TODO: address compression
+ static char ret[8*4+7+1];
+ const Uint16 *addr = Address;
+ sprintf(ret, "%x:%x:%x:%x:%x:%x:%x:%x",
+ ntohs(addr[0]), ntohs(addr[1]), ntohs(addr[2]), ntohs(addr[3]),
+ ntohs(addr[4]), ntohs(addr[5]), ntohs(addr[6]), ntohs(addr[7])
+ );
+ return ret;
+ }
+
+ default:
+ return "";
+ }
}
git.ucc.asn.au / tpg / acess2.git / blobdiff
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