first draft

2022-04-13 18:01:39 +08:00
commit 906782e134
111 changed files with 15383 additions and 0 deletions
--- a/libpcap_stuff.c
+++ b/libpcap_stuff.c
@ -0,0 +1,75 @@
+/* 
+ * $smu-mark$ 
+ * $name: libpcap_stuff.c$ 
+ * $author: Salvatore Sanfilippo <antirez@invece.org>$ 
+ * $copyright: Copyright (C) 1999 by Salvatore Sanfilippo$ 
+ * $license: This software is under GPL version 2 of license$ 
+ * $date: Fri Nov  5 11:55:48 MET 1999$ 
+ * $rev: 8$ 
+ */ 
+
+#include "hping2.h"
+
+/* This is not be compiled if the target is linux without libpcap */
+#if (!defined OSTYPE_LINUX) || (defined FORCE_LIBPCAP)
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <pcap.h>
+#include <net/bpf.h>
+
+#include "globals.h"
+
+int open_pcap()
+{
+	int on;
+
+	on = 1; /* no warning if BIOCIMMEDIATE will not be compiled */
+	if (opt_debug)
+		printf("DEBUG: pcap_open_live(%s, 99999, 0, 1, %p)\n",
+			ifname, errbuf);
+
+	pcapfp = pcap_open_live(ifname, 99999, 0, 1, errbuf);
+	if (pcapfp == NULL) {
+		printf("[open_pcap] pcap_open_live: %s\n", errbuf);
+		return -1;
+	}
+#if (!defined OSTYPE_LINUX) && (!defined __sun__)
+	/* Return the packets to userspace as fast as possible */
+	if (ioctl(pcap_fileno(pcapfp), BIOCIMMEDIATE, &on) == -1)
+		perror("[open_pcap] ioctl(... BIOCIMMEDIATE ...)");
+#endif
+	return 0;
+}
+
+int close_pcap()
+{
+	pcap_close(pcapfp);
+	return 0;
+}
+
+int pcap_recv(char *packet, unsigned int size)
+{
+        char *p = NULL;
+        int pcapsize;
+
+	if (opt_debug)
+		printf("DEBUG: under pcap_recv()\n");
+
+        while(p == NULL) {
+                p = (unsigned char*) pcap_next(pcapfp, &hdr);
+		if (p == NULL && opt_debug)
+			printf("DEBUG: [pcap_recv] p = NULL\n");
+	}
+
+        pcapsize = hdr.caplen;
+
+        if (pcapsize < size)
+                size = pcapsize;
+
+        memcpy(packet, p, pcapsize);
+
+        return pcapsize;
+}
+#endif /* ! OSTYPE_LINUX || FORCE_LIBPCAP */