slirp that uses user defined interface for sockets instead of operating system

sockets. Currently supports only TCP.

some addtional changes:
1) DHCP NACK support
2) moving prototypes from slirp.h to specific header files
3) not supporting emulated sockets slirp

1 files changed, 343 insertions, 0 deletions

diff --git a/slirp_common.h b/slirp_common.h
new file mode 100644
index 0000000..41b206c
--- /dev/null
+++ b/slirp_common.h
@@ -0,0 +1,343 @@
+#ifndef __SLIRP_COMMON_H__
+#define __SLIRP_COMMON_H__
+
+
+//#define DEBUG 1
+
+// Uncomment the following line to enable SLIRP statistics printing in Qemu
+//#define LOG_ENABLED
+
+#ifdef LOG_ENABLED
+#define STAT(expr) expr
+#else
+#define STAT(expr) do { } while(0)
+#endif
+
+#include "slirp_config.h"
+
+#ifdef _WIN32
+#include <inttypes.h>
+
+typedef uint8_t u_int8_t;
+typedef uint16_t u_int16_t;
+typedef uint32_t u_int32_t;
+typedef uint64_t u_int64_t;
+typedef char *caddr_t;
+
+#define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# include <sys/timeb.h>
+# include <iphlpapi.h>
+
+# define EWOULDBLOCK WSAEWOULDBLOCK
+# define EINPROGRESS WSAEINPROGRESS
+# define ENOTCONN WSAENOTCONN
+# define EHOSTUNREACH WSAEHOSTUNREACH
+# define ENETUNREACH WSAENETUNREACH
+# define ECONNREFUSED WSAECONNREFUSED
+#else
+# define ioctlsocket ioctl
+# define closesocket(s) close(s)
+# define O_BINARY 0
+#endif
+
+#include <sys/types.h>
+#ifdef HAVE_SYS_BITYPES_H
+# include <sys/bitypes.h>
+#endif
+
+#include <sys/time.h>
+
+#ifdef NEED_TYPEDEFS
+typedef char int8_t;
+typedef unsigned char u_int8_t;
+
+# if SIZEOF_SHORT == 2
+    typedef short int16_t;
+    typedef unsigned short u_int16_t;
+# else
+#  if SIZEOF_INT == 2
+    typedef int int16_t;
+    typedef unsigned int u_int16_t;
+#  else
+    #error Cannot find a type with sizeof() == 2
+#  endif
+# endif
+
+# if SIZEOF_SHORT == 4
+   typedef short int32_t;
+   typedef unsigned short u_int32_t;
+# else
+#  if SIZEOF_INT == 4
+    typedef int int32_t;
+    typedef unsigned int u_int32_t;
+#  else
+    #error Cannot find a type with sizeof() == 4
+#  endif
+# endif
+#endif /* NEED_TYPEDEFS */
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+
+#ifndef HAVE_MEMMOVE
+#define memmove(x, y, z) bcopy(y, x, z)
+#endif
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
+#ifdef HAVE_STRING_H
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+
+#ifndef _WIN32
+#include <sys/uio.h>
+#endif
+
+#ifndef _P
+#ifndef NO_PROTOTYPES
+#  define   _P(x)   x
+#else
+#  define   _P(x)   ()
+#endif
+#endif
+
+#ifndef _WIN32
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#endif
+
+#ifdef GETTIMEOFDAY_ONE_ARG
+#define gettimeofday(x, y) gettimeofday(x)
+#endif
+
+/* Systems lacking strdup() definition in <string.h>. */
+#if defined(ultrix)
+char *strdup _P((const char *));
+#endif
+
+/* Systems lacking malloc() definition in <stdlib.h>. */
+#if defined(ultrix) || defined(hcx)
+void *malloc _P((size_t arg));
+void free _P((void *ptr));
+#endif
+
+#ifndef HAVE_INET_ATON
+int inet_aton _P((const char *cp, struct in_addr *ia));
+#endif
+
+#include <fcntl.h>
+#ifndef NO_UNIX_SOCKETS
+#include <sys/un.h>
+#endif
+#include <signal.h>
+#ifdef HAVE_SYS_SIGNAL_H
+# include <sys/signal.h>
+#endif
+#ifndef _WIN32
+#include <sys/socket.h>
+#endif
+
+#if defined(HAVE_SYS_IOCTL_H)
+# include <sys/ioctl.h>
+#endif
+
+#ifdef HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+
+#ifdef HAVE_SYS_WAIT_H
+# include <sys/wait.h>
+#endif
+
+#ifdef HAVE_SYS_FILIO_H
+# include <sys/filio.h>
+#endif
+
+#ifdef USE_PPP
+#include <ppp/slirppp.h>
+#endif
+
+#ifdef __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#include <sys/stat.h>
+
+/* Avoid conflicting with the libc insque() and remque(), which
+   have different prototypes. */
+#define insque slirp_insque
+#define remque slirp_remque
+
+#ifdef HAVE_SYS_STROPTS_H
+#include <sys/stropts.h>
+#endif
+
+
+#ifndef FULL_BOLT
+void if_start _P((void));
+#else
+void if_start _P((struct ttys *));
+#endif
+
+#ifdef BAD_SPRINTF
+# define vsprintf vsprintf_len
+# define sprintf sprintf_len
+ extern int vsprintf_len _P((char *, const char *, va_list));
+ extern int sprintf_len _P((char *, const char *, ...));
+#endif
+
+#ifdef DECLARE_SPRINTF
+# ifndef BAD_SPRINTF
+ extern int vsprintf _P((char *, const char *, va_list));
+# endif
+ extern int vfprintf _P((FILE *, const char *, va_list));
+#endif
+
+#ifndef HAVE_STRERROR
+ extern char *strerror _P((int error));
+#endif
+
+#ifndef HAVE_INDEX
+ char *index _P((const char *, int));
+#endif
+
+#ifndef HAVE_GETHOSTID
+ long gethostid _P((void));
+#endif
+
+void lprint _P((const char *, ...));
+
+#ifndef _WIN32
+#include <netdb.h>
+#endif
+
+#define DEFAULT_BAUD 115200
+
+#define SO_OPTIONS DO_KEEPALIVE
+#define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
+
+
+
+#ifdef USE_PPP
+#define MIN_MRU MINMRU
+#define MAX_MRU MAXMRU
+#else
+#define MIN_MRU 128
+#define MAX_MRU 16384
+#endif
+
+#ifndef _WIN32
+#define min(x,y) ((x) < (y) ? (x) : (y))
+#define max(x,y) ((x) > (y) ? (x) : (y))
+#endif
+
+#ifdef _WIN32
+#undef errno
+#define errno (WSAGetLastError())
+#endif
+
+#include "net_slirp.h"
+#include "debug.h"
+#include "misc.h"
+#include "ctl.h"
+
+
+extern struct ttys *ttys_unit[MAX_INTERFACES];
+
+#ifndef NULL
+#define NULL (void *)0
+#endif
+
+#define FALSE 0
+#define TRUE  1
+
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#define TOWRITEMAX 512
+
+extern struct timeval tt;
+extern int link_up;
+extern int slirp_socket;
+extern int slirp_socket_unit;
+extern int slirp_socket_port;
+extern u_int32_t slirp_socket_addr;
+extern char *slirp_socket_passwd;
+extern int ctty_closed;
+
+/*
+ * Get the difference in 2 times from updtim()
+ * Allow for wraparound times, "just in case"
+ * x is the greater of the 2 (current time) and y is
+ * what it's being compared against.
+ */
+#define TIME_DIFF(x,y) (x)-(y) < 0 ? ~0-(y)+(x) : (x)-(y)
+
+
+#ifndef offsetof

+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)

+#endif

+#ifndef container_of

+#define container_of(ptr, type, member) ({                      \

+        const typeof(((type *) 0)->member) *__mptr = (ptr);     \

+        (type *) ((char *) __mptr - offsetof(type, member));})

+#endif

+
+
+extern char *slirp_tty;
+extern char *exec_shell;
+extern u_int curtime;
+extern fd_set *global_readfds, *global_writefds, *global_xfds;
+extern struct in_addr ctl_addr;
+extern struct in_addr special_addr;
+extern struct in_addr alias_addr;
+extern struct in_addr our_addr;
+extern struct in_addr loopback_addr;
+extern struct in_addr dns_addr;
+extern char *username;
+extern char *socket_path;
+extern int towrite_max;
+extern int ppp_exit;
+extern int tcp_keepintvl;
+extern uint8_t client_ethaddr[6];
+extern char slirp_hostname[33];
+extern const char *slirp_special_ip;
+
+#define PROTO_SLIP 0x1
+#ifdef USE_PPP
+#define PROTO_PPP 0x2
+#endif
+
+extern const uint8_t zero_ethaddr[6];
+extern const uint8_t special_ethaddr[6];
+extern struct in_addr client_ipaddr;
+
+extern SlirpUsrNetworkInterface *slirp_net_interface;
+#endif
+