1 files changed, 427 insertions, 0 deletions
diff --git a/lib/libpcap/libpcap/testprogs/valgrindtest.c b/lib/libpcap/libpcap/testprogs/valgrindtest.c
new file mode 100644
index 0000000..104ef6a
--- /dev/null
+++ b/lib/libpcap/libpcap/testprogs/valgrindtest.c
@@ -0,0 +1,427 @@
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include "varattrs.h"
+
+/*
+ * This doesn't actually test libpcap itself; it tests whether
+ * valgrind properly handles the APIs libpcap uses.  If it doesn't,
+ * we end up getting patches submitted to "fix" references that
+ * valgrind claims are being made to uninitialized data, when, in
+ * fact, the OS isn't making any such references - or we get
+ * valgrind *not* detecting *actual* incorrect references.
+ *
+ * Both BPF and Linux socket filters aren't handled correctly
+ * by some versions of valgrind.  See valgrind bug 318203 for
+ * Linux:
+ *
+ *	https://bugs.kde.org/show_bug.cgi?id=318203
+ *
+ * and valgrind bug 312989 for macOS:
+ *
+ *	https://bugs.kde.org/show_bug.cgi?id=312989
+ *
+ * The fixes for both of those are checked into the official valgrind
+ * repository.
+ *
+ * The unofficial FreeBSD port has similar issues to the official macOS
+ * port, for similar reasons.
+ */
+#ifndef lint
+static const char copyright[] _U_ =
+    "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
+The Regents of the University of California.  All rights reserved.\n";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <arpa/inet.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "pcap/funcattrs.h"
+
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(_AIX) || defined(sun)
+/* OS with BPF - use BPF */
+#define USE_BPF
+#elif defined(linux)
+/* Linux - use socket filters */
+#define USE_SOCKET_FILTERS
+#else
+#error "Unknown platform or platform that doesn't support Valgrind"
+#endif
+
+#if defined(USE_BPF)
+
+#include <sys/ioctl.h>
+#include <net/bpf.h>
+
+/*
+ * Make "pcap.h" not include "pcap/bpf.h"; we are going to include the
+ * native OS version, as we're going to be doing our own ioctls to
+ * make sure that, in the uninitialized-data tests, the filters aren't
+ * checked by libpcap before being handed to BPF.
+ */
+#define PCAP_DONT_INCLUDE_PCAP_BPF_H
+
+#elif defined(USE_SOCKET_FILTERS)
+
+#include <sys/socket.h>
+#include <linux/types.h>
+#include <linux/filter.h>
+
+#endif
+
+#include <pcap.h>
+
+static char *program_name;
+
+/* Forwards */
+static void PCAP_NORETURN usage(void);
+static void PCAP_NORETURN error(const char *, ...) PCAP_PRINTFLIKE(1, 2);
+static void warning(const char *, ...) PCAP_PRINTFLIKE(1, 2);
+
+/*
+ * On Windows, we need to open the file in binary mode, so that
+ * we get all the bytes specified by the size we get from "fstat()".
+ * On UNIX, that's not necessary.  O_BINARY is defined on Windows;
+ * we define it as 0 if it's not defined, so it does nothing.
+ */
+#ifndef O_BINARY
+#define O_BINARY	0
+#endif
+
+static char *
+read_infile(char *fname)
+{
+	register int i, fd, cc;
+	register char *cp;
+	struct stat buf;
+
+	fd = open(fname, O_RDONLY|O_BINARY);
+	if (fd < 0)
+		error("can't open %s: %s", fname, pcap_strerror(errno));
+
+	if (fstat(fd, &buf) < 0)
+		error("can't stat %s: %s", fname, pcap_strerror(errno));
+
+	cp = malloc((u_int)buf.st_size + 1);
+	if (cp == NULL)
+		error("malloc(%d) for %s: %s", (u_int)buf.st_size + 1,
+			fname, pcap_strerror(errno));
+	cc = read(fd, cp, (u_int)buf.st_size);
+	if (cc < 0)
+		error("read %s: %s", fname, pcap_strerror(errno));
+	if (cc != buf.st_size)
+		error("short read %s (%d != %d)", fname, cc, (int)buf.st_size);
+
+	close(fd);
+	/* replace "# comment" with spaces */
+	for (i = 0; i < cc; i++) {
+		if (cp[i] == '#')
+			while (i < cc && cp[i] != '\n')
+				cp[i++] = ' ';
+	}
+	cp[cc] = '\0';
+	return (cp);
+}
+
+/* VARARGS */
+static void
+error(const char *fmt, ...)
+{
+	va_list ap;
+
+	(void)fprintf(stderr, "%s: ", program_name);
+	va_start(ap, fmt);
+	(void)vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	if (*fmt) {
+		fmt += strlen(fmt);
+		if (fmt[-1] != '\n')
+			(void)fputc('\n', stderr);
+	}
+	exit(1);
+	/* NOTREACHED */
+}
+
+/* VARARGS */
+static void
+warning(const char *fmt, ...)
+{
+	va_list ap;
+
+	(void)fprintf(stderr, "%s: WARNING: ", program_name);
+	va_start(ap, fmt);
+	(void)vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	if (*fmt) {
+		fmt += strlen(fmt);
+		if (fmt[-1] != '\n')
+			(void)fputc('\n', stderr);
+	}
+}
+
+/*
+ * Copy arg vector into a new buffer, concatenating arguments with spaces.
+ */
+static char *
+copy_argv(register char **argv)
+{
+	register char **p;
+	register u_int len = 0;
+	char *buf;
+	char *src, *dst;
+
+	p = argv;
+	if (*p == 0)
+		return 0;
+
+	while (*p)
+		len += strlen(*p++) + 1;
+
+	buf = (char *)malloc(len);
+	if (buf == NULL)
+		error("copy_argv: malloc");
+
+	p = argv;
+	dst = buf;
+	while ((src = *p++) != NULL) {
+		while ((*dst++ = *src++) != '\0')
+			;
+		dst[-1] = ' ';
+	}
+	dst[-1] = '\0';
+
+	return buf;
+}
+
+#define INSN_COUNT	17
+
+int
+main(int argc, char **argv)
+{
+	char *cp, *device;
+	int op;
+	int dorfmon, useactivate;
+	char ebuf[PCAP_ERRBUF_SIZE];
+	char *infile;
+	const char *cmdbuf;
+	pcap_if_t *devlist;
+	pcap_t *pd;
+	int status = 0;
+	int pcap_fd;
+#if defined(USE_BPF)
+	struct bpf_program bad_fcode;
+	struct bpf_insn uninitialized[INSN_COUNT];
+#elif defined(USE_SOCKET_FILTERS)
+	struct sock_fprog bad_fcode;
+	struct sock_filter uninitialized[INSN_COUNT];
+#endif
+	struct bpf_program fcode;
+
+	device = NULL;
+	dorfmon = 0;
+	useactivate = 0;
+	infile = NULL;
+
+	if ((cp = strrchr(argv[0], '/')) != NULL)
+		program_name = cp + 1;
+	else
+		program_name = argv[0];
+
+	opterr = 0;
+	while ((op = getopt(argc, argv, "aF:i:I")) != -1) {
+		switch (op) {
+
+		case 'a':
+			useactivate = 1;
+			break;
+
+		case 'F':
+			infile = optarg;
+			break;
+
+		case 'i':
+			device = optarg;
+			break;
+
+		case 'I':
+			dorfmon = 1;
+			useactivate = 1;	/* required for rfmon */
+			break;
+
+		default:
+			usage();
+			/* NOTREACHED */
+		}
+	}
+
+	if (device == NULL) {
+		/*
+		 * No interface specified; get whatever pcap_lookupdev()
+		 * finds.
+		 */
+		if (pcap_findalldevs(&devlist, ebuf) == -1)
+			error("%s", ebuf);
+		if (devlist == NULL)
+			error("no interfaces available for capture");
+		device = strdup(devlist->name);
+		pcap_freealldevs(devlist);
+	}
+
+	if (infile != NULL) {
+		/*
+		 * Filter specified with "-F" and a file containing
+		 * a filter.
+		 */
+		cmdbuf = read_infile(infile);
+	} else {
+		if (optind < argc) {
+			/*
+			 * Filter specified with arguments on the
+			 * command line.
+			 */
+			cmdbuf = copy_argv(&argv[optind+1]);
+		} else {
+			/*
+			 * No filter specified; use an empty string, which
+			 * compiles to an "accept all" filter.
+			 */
+			cmdbuf = "";
+		}
+	}
+
+	if (useactivate) {
+		pd = pcap_create(device, ebuf);
+		if (pd == NULL)
+			error("%s: pcap_create() failed: %s", device, ebuf);
+		status = pcap_set_snaplen(pd, 65535);
+		if (status != 0)
+			error("%s: pcap_set_snaplen failed: %s",
+			    device, pcap_statustostr(status));
+		status = pcap_set_promisc(pd, 1);
+		if (status != 0)
+			error("%s: pcap_set_promisc failed: %s",
+			    device, pcap_statustostr(status));
+		if (dorfmon) {
+			status = pcap_set_rfmon(pd, 1);
+			if (status != 0)
+				error("%s: pcap_set_rfmon failed: %s",
+				    device, pcap_statustostr(status));
+		}
+		status = pcap_set_timeout(pd, 1000);
+		if (status != 0)
+			error("%s: pcap_set_timeout failed: %s",
+			    device, pcap_statustostr(status));
+		status = pcap_activate(pd);
+		if (status < 0) {
+			/*
+			 * pcap_activate() failed.
+			 */
+			error("%s: %s\n(%s)", device,
+			    pcap_statustostr(status), pcap_geterr(pd));
+		} else if (status > 0) {
+			/*
+			 * pcap_activate() succeeded, but it's warning us
+			 * of a problem it had.
+			 */
+			warning("%s: %s\n(%s)", device,
+			    pcap_statustostr(status), pcap_geterr(pd));
+		}
+	} else {
+		*ebuf = '\0';
+		pd = pcap_open_live(device, 65535, 1, 1000, ebuf);
+		if (pd == NULL)
+			error("%s", ebuf);
+		else if (*ebuf)
+			warning("%s", ebuf);
+	}
+
+	pcap_fd = pcap_fileno(pd);
+
+	/*
+	 * Try setting a filter with an uninitialized bpf_program
+	 * structure.  This should cause valgrind to report a
+	 * problem.
+	 *
+	 * We don't check for errors, because it could get an
+	 * error due to a bad pointer or count.
+	 */
+#if defined(USE_BPF)
+	ioctl(pcap_fd, BIOCSETF, &bad_fcode);
+#elif defined(USE_SOCKET_FILTERS)
+	setsockopt(pcap_fd, SOL_SOCKET, SO_ATTACH_FILTER, &bad_fcode,
+	    sizeof(bad_fcode));
+#endif
+
+	/*
+	 * Try setting a filter with an initialized bpf_program
+	 * structure that points to an uninitialized program.
+	 * That should also cause valgrind to report a problem.
+	 *
+	 * We don't check for errors, because it could get an
+	 * error due to a bad pointer or count.
+	 */
+#if defined(USE_BPF)
+	bad_fcode.bf_len = INSN_COUNT;
+	bad_fcode.bf_insns = uninitialized;
+	ioctl(pcap_fd, BIOCSETF, &bad_fcode);
+#elif defined(USE_SOCKET_FILTERS)
+	bad_fcode.len = INSN_COUNT;
+	bad_fcode.filter = uninitialized;
+	setsockopt(pcap_fd, SOL_SOCKET, SO_ATTACH_FILTER, &bad_fcode,
+	    sizeof(bad_fcode));
+#endif
+
+	/*
+	 * Now compile a filter and set the filter with that.
+	 * That should *not* cause valgrind to report a
+	 * problem.
+	 */
+	if (pcap_compile(pd, &fcode, cmdbuf, 1, 0) < 0)
+		error("can't compile filter: %s", pcap_geterr(pd));
+	if (pcap_setfilter(pd, &fcode) < 0)
+		error("can't set filter: %s", pcap_geterr(pd));
+
+	pcap_close(pd);
+	exit(status < 0 ? 1 : 0);
+}
+
+static void
+usage(void)
+{
+	(void)fprintf(stderr, "%s, with %s\n", program_name,
+	    pcap_lib_version());
+	(void)fprintf(stderr,
+	    "Usage: %s [-aI] [ -F file ] [ -I interface ] [ expression ]\n",
+	    program_name);
+	exit(1);
+}