1 files changed, 321 insertions, 0 deletions
diff --git a/package/mopd/src/common/pf-linux2.c b/package/mopd/src/common/pf-linux2.c
new file mode 100644
index 000000000..1ae82ff90
--- /dev/null
+++ b/package/mopd/src/common/pf-linux2.c
@@ -0,0 +1,321 @@
+/*
+ * General Purpose AppleTalk Packet Filter Interface
+ *
+ * Copyright (c) 1992-1995, The University of Melbourne.
+ * All Rights Reserved.  Permission to redistribute or
+ * use any part of this software for any purpose must
+ * be obtained in writing from the copyright owner.
+ *
+ * This software is supplied "as is" without express
+ * or implied warranty.
+ *
+ * djh@munnari.OZ.AU
+ *
+ * Supports:
+ *	Linux SOCK_PACKET
+ *	
+ * $Author: atp $
+ * $Revision: 1.1.1.1 $
+ *
+ *
+ * Modified for use with the linux-mopd port by Karl Maftoum 
+ * u963870@student.canberra.edu.au
+ *
+ */
+
+/*
+ * include header files
+ *
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <sys/file.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <sys/errno.h>
+#include <linux/if_ether.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <string.h>
+
+#define MOPDEF_SUPRESS_EXTERN
+#include "mopdef.h"
+
+/*
+ * definitions
+ *
+ */
+
+#define	READBUFSIZ	4096
+#define	NUMRDS		32
+
+struct RDS {
+  u_short dataLen;
+  u_char *dataPtr;
+};
+
+/*
+ * variables
+ *
+ */
+
+struct socklist {
+  int iflen;
+  struct sockaddr sa;
+} socklist[32];
+
+struct ifreq ifr;
+extern int errno;
+extern int promisc;
+
+struct RDS RDS[NUMRDS];
+
+/*
+ * Open and initialize packet filter
+ * for a particular protocol type.
+ *
+ */
+
+
+int
+pfInit(interface, mode, protocol, typ)
+char *interface;
+u_short protocol;
+int typ, mode;
+{
+  int s;
+  int ioarg;
+  char device[64];
+  unsigned long if_flags;
+
+
+  { u_short prot;
+
+    prot = ((typ == TRANS_8023) ? htons(ETH_P_802_2) : htons(protocol));
+    if ((s = socket(AF_INET, SOCK_PACKET, prot)) < 0) {
+      perror(interface);
+      return(-1);
+    }
+    if (s >= 32) {
+      close(s);
+      return(-1);
+    }
+  }
+
+  /*
+   * set filter for protocol and type (IPTalk, Phase 1/2)
+   *
+   */
+
+  if (setup_pf(s, protocol, typ) < 0)
+    return(-1);
+
+  /*
+   * set options, bind to underlying interface
+   *
+   */
+
+  strncpy(ifr.ifr_name, interface, sizeof(ifr.ifr_name));
+
+  /* record socket interface name and length */
+  strncpy(socklist[s].sa.sa_data, interface, sizeof(socklist[s].sa.sa_data));
+  socklist[s].iflen = strlen(interface);
+
+  return(s);
+}
+
+/*
+ * establish protocol filter
+ *
+ */
+
+int
+setup_pf(s, prot, typ)
+int s, typ;
+u_short prot;
+{
+  int ioarg;
+  u_short offset;
+  return(0);
+}
+
+/*
+ * get the interface ethernet address
+ *
+ */
+
+int
+pfEthAddr(s, interface, addr)
+int s;
+char *interface;
+u_char *addr;
+{
+  strncpy(ifr.ifr_name, interface, sizeof (ifr.ifr_name) -1);
+  ifr.ifr_name[sizeof(ifr.ifr_name)] = 0;
+  ifr.ifr_addr.sa_family = AF_INET;
+  if (ioctl(s, SIOCGIFHWADDR, &ifr) < 0) {
+    perror("SIOCGIFHWADDR");
+    return(-1);
+  }
+  memcpy((char *)addr, ifr.ifr_hwaddr.sa_data, 6);
+  return(0);
+}
+
+/*
+ * add a multicast address to the interface
+ *
+ */
+
+int
+pfAddMulti(s, interface, addr)
+int s;
+char *interface;
+u_char *addr;
+{
+  int sock;
+
+  strncpy(ifr.ifr_name, interface, sizeof (ifr.ifr_name) - 1);
+  ifr.ifr_name[sizeof(ifr.ifr_name)] = 0;
+
+  ifr.ifr_addr.sa_family = AF_UNSPEC;
+  bcopy((char *)addr, ifr.ifr_addr.sa_data, 6);
+
+  /*
+   * open a socket, temporarily, to use for SIOC* ioctls
+   *
+   */
+  if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+    perror("socket()");
+    return(-1);
+  }
+  if (ioctl(sock, SIOCADDMULTI, (caddr_t)&ifr) < 0) {
+    perror("SIOCADDMULTI");
+    close(sock);
+    return(-1);
+  }
+  close(sock);
+  
+  return(0);
+}
+
+/*
+ * delete a multicast address from the interface
+ *
+ */
+
+int
+pfDelMulti(s, interface, addr)
+int s;
+char *interface;
+u_char *addr;
+{
+  int sock;
+
+  strncpy(ifr.ifr_name, interface, sizeof (ifr.ifr_name) - 1);
+  ifr.ifr_name[sizeof(ifr.ifr_name)] = 0;
+
+  ifr.ifr_addr.sa_family = AF_UNSPEC;
+  bcopy((char *)addr, ifr.ifr_addr.sa_data, 6);
+
+  /*
+   * open a socket, temporarily, to use for SIOC* ioctls
+   *
+   */
+  if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+    perror("socket()");
+    return(-1);
+  }
+  if (ioctl(sock, SIOCDELMULTI, (caddr_t)&ifr) < 0) {
+    perror("SIOCDELMULTI");
+    close(sock);
+    return(-1);
+  }
+  close(sock);
+
+  return(0);
+}
+
+/*
+ * return 1 if ethernet interface capable of multiple opens
+ *
+ */
+
+int
+eth_mopen(phase)
+int phase;
+{
+  if (phase == 2)
+    return(0);
+  return(1);
+}
+
+/*
+ * read a packet
+ * Read Data Structure describes packet(s) received
+ *
+ */
+
+
+
+
+int
+pfRead(fd, buf, len)
+int fd, len;
+u_char *buf;
+{
+  int i, cc;
+
+  int fromlen;
+  struct sockaddr sa;
+
+  RDS[0].dataLen = 0;
+  fromlen = sizeof(struct sockaddr);
+
+  if ((cc = recvfrom(fd, (char *)buf, len, 0, &sa, &fromlen)) <= 0)
+    return(cc);
+
+  /* check if from right interface */
+  for (i = socklist[fd].iflen-1; i >= 0; i--)
+    if (sa.sa_data[i] != socklist[fd].sa.sa_data[i])
+      return(0);
+
+  RDS[0].dataLen = cc;
+  RDS[0].dataPtr = buf;
+  RDS[1].dataLen = 0;
+
+  return(cc);
+}
+
+/*
+ * write a packet
+ *
+ */
+
+int
+pfWrite(fd, buf, len)
+int fd, len;
+u_char *buf;
+{
+
+  if (sendto(fd, buf, len, 0, &socklist[fd].sa, sizeof(struct sockaddr)) == len)
+    return(len);
+
+  return(-1);
+}
+
+/*
+ * Return information to device.c how to open device.
+ * In this case the driver can handle both Ethernet type II and
+ * IEEE 802.3 frames (SNAP) in a single pfOpen.
+ */
+
+int
+pfTrans(interface)
+	char *interface;
+{
+	return TRANS_ETHER+TRANS_8023;
+}
+