*
* Copyright (C) 1999 by Gilbert Ramirez <gram@alumni.rice.edu>
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
+#include <glib.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <wsutil/clopts_common.h>
+#include <wsutil/cmdarg_err.h>
+#include <wsutil/unicode-utils.h>
+#include <wsutil/file_util.h>
+#include <wsutil/filesystem.h>
+#include <wsutil/privileges.h>
+
+#ifdef HAVE_PLUGINS
+#include <wsutil/plugins.h>
#endif
-#ifndef HAVE_GETOPT
-#include "wsutil/wsgetopt.h"
+#include <wsutil/report_message.h>
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
#endif
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
+#ifndef HAVE_GETOPT_LONG
+#include "wsutil/wsgetopt.h"
#endif
-#include <time.h>
-#include <errno.h>
+#include "randpkt_core/randpkt_core.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <glib.h>
-#include "wiretap/wtap.h"
-#include "wsutil/file_util.h"
+#define INVALID_OPTION 1
+#define INVALID_TYPE 2
+#define CLOSE_ERROR 2
-#ifdef _WIN32
-#include <wsutil/unicode-utils.h>
-#endif /* _WIN32 */
+/*
+ * General errors and warnings are reported with an console message
+ * in randpkt.
+ */
+static void
+failure_warning_message(const char *msg_format, va_list ap)
+{
+ fprintf(stderr, "randpkt: ");
+ vfprintf(stderr, msg_format, ap);
+ fprintf(stderr, "\n");
+}
-#define array_length(x) (sizeof x / sizeof x[0])
-
-/* Types of produceable packets */
-enum {
- PKT_ARP,
- PKT_BGP,
- PKT_BVLC,
- PKT_DNS,
- PKT_ETHERNET,
- PKT_FDDI,
- PKT_GIOP,
- PKT_ICMP,
- PKT_IP,
- PKT_LLC,
- PKT_M2M,
- PKT_MEGACO,
- PKT_NBNS,
- PKT_NCP2222,
- PKT_SCTP,
- PKT_SYSLOG,
- PKT_TCP,
- PKT_TDS,
- PKT_TR,
- PKT_UDP,
- PKT_USB,
- PKT_USB_LINUX
-};
-
-typedef struct {
- const char *abbrev;
- const char *longname;
- int produceable_type;
- int sample_wtap_encap;
- guint8 *sample_buffer;
- int sample_length;
- guint8 *pseudo_buffer;
- int pseudo_length;
-} pkt_example;
-
-/* Ethernet, indicating ARP */
-guint8 pkt_arp[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x00, 0x00,
- 0x32, 0x25, 0x0f, 0xff,
- 0x08, 0x06
-};
-
-/* Ethernet+IP+UDP, indicating DNS */
-guint8 pkt_dns[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x3c,
- 0xc5, 0x9e, 0x40, 0x00,
- 0xff, 0x11, 0xd7, 0xe0,
- 0xd0, 0x15, 0x02, 0xb8,
- 0x0a, 0x01, 0x01, 0x63,
-
- 0x05, 0xe8, 0x00, 0x35,
- 0xff, 0xff, 0x2a, 0xb9,
- 0x30
-};
-
-/* Ethernet+IP, indicating ICMP */
-guint8 pkt_icmp[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x54,
- 0x8f, 0xb3, 0x40, 0x00,
- 0xfd, 0x01, 0x8a, 0x99,
- 0xcc, 0xfc, 0x66, 0x0b,
- 0xce, 0x41, 0x62, 0x12
-};
-
-/* Ethernet, indicating IP */
-guint8 pkt_ip[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00
-};
-
-/* TR, indicating LLC */
-guint8 pkt_llc[] = {
- 0x10, 0x40, 0x68, 0x00,
- 0x19, 0x69, 0x95, 0x8b,
- 0x00, 0x01, 0xfa, 0x68,
- 0xc4, 0x67
-};
-
-/* Ethernet, indicating WiMAX M2M */
-guint8 pkt_m2m[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x00, 0x00,
- 0x32, 0x25, 0x0f, 0xff,
- 0x08, 0xf0
-};
-
-/* Ethernet+IP+UDP, indicating NBNS */
-guint8 pkt_nbns[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x3c,
- 0xc5, 0x9e, 0x40, 0x00,
- 0xff, 0x11, 0xd7, 0xe0,
- 0xd0, 0x15, 0x02, 0xb8,
- 0x0a, 0x01, 0x01, 0x63,
-
- 0x00, 0x89, 0x00, 0x89,
- 0x00, 0x00, 0x2a, 0xb9,
- 0x30
-};
-
-/* Ethernet+IP+UDP, indicating syslog */
-guint8 pkt_syslog[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x64,
- 0x20, 0x48, 0x00, 0x00,
- 0xfc, 0x11, 0xf8, 0x03,
- 0xd0, 0x15, 0x02, 0xb8,
- 0x0a, 0x01, 0x01, 0x63,
-
- 0x05, 0xe8, 0x02, 0x02,
- 0x00, 0x50, 0x51, 0xe1,
- 0x3c
-};
-
-/* TR+LLC+IP, indicating TCP */
-guint8 pkt_tcp[] = {
- 0x10, 0x40, 0x68, 0x00,
- 0x19, 0x69, 0x95, 0x8b,
- 0x00, 0x01, 0xfa, 0x68,
- 0xc4, 0x67,
-
- 0xaa, 0xaa, 0x03, 0x00,
- 0x00, 0x00, 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x28,
- 0x0b, 0x0b, 0x40, 0x00,
- 0x20, 0x06, 0x85, 0x37,
- 0xc0, 0xa8, 0x27, 0x01,
- 0xc0, 0xa8, 0x22, 0x3c
-};
-
-/* Ethernet+IP, indicating UDP */
-guint8 pkt_udp[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x3c,
- 0xc5, 0x9e, 0x40, 0x00,
- 0xff, 0x11, 0xd7, 0xe0,
- 0xd0, 0x15, 0x02, 0xb8,
- 0x0a, 0x01, 0x01, 0x63
-};
-
-/* Ethernet+IP+UDP, indicating BVLC */
-guint8 pkt_bvlc[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x3c,
- 0xc5, 0x9e, 0x40, 0x00,
- 0xff, 0x11, 0x01, 0xaa,
- 0xc1, 0xff, 0x19, 0x1e,
- 0xc1, 0xff, 0x19, 0xff,
- 0xba, 0xc0, 0xba, 0xc0,
- 0x00, 0xff, 0x2d, 0x5e,
- 0x81
-};
-
-/* TR+LLC+IPX, indicating NCP, with NCP Type == 0x2222 */
-guint8 pkt_ncp2222[] = {
- 0x10, 0x40, 0x00, 0x00,
- 0xf6, 0x7c, 0x9b, 0x70,
- 0x68, 0x00, 0x19, 0x69,
- 0x95, 0x8b, 0xe0, 0xe0,
- 0x03, 0xff, 0xff, 0x00,
- 0x25, 0x02, 0x11, 0x00,
- 0x00, 0x74, 0x14, 0x00,
- 0x00, 0x00, 0x00, 0x00,
- 0x01, 0x04, 0x51, 0x00,
- 0x00, 0x00, 0x04, 0x00,
- 0x02, 0x16, 0x19, 0x7a,
- 0x84, 0x40, 0x01, 0x22,
- 0x22
-};
-
-/* Ethernet+IP+TCP, indicating GIOP */
-guint8 pkt_giop[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0xa6,
- 0x00, 0x2f, 0x40, 0x00,
- 0x40, 0x06, 0x3c, 0x21,
- 0x7f, 0x00, 0x00, 0x01,
- 0x7f, 0x00, 0x00, 0x01,
-
- 0x30, 0x39, 0x04, 0x05,
- 0xac, 0x02, 0x1e, 0x69,
- 0xab, 0x74, 0xab, 0x64,
- 0x80, 0x18, 0x79, 0x60,
- 0xc4, 0xb8, 0x00, 0x00,
- 0x01, 0x01, 0x08, 0x0a,
- 0x00, 0x00, 0x48, 0xf5,
- 0x00, 0x00, 0x48, 0xf5,
-
- 0x47, 0x49, 0x4f, 0x50,
- 0x01, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x30,
- 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x01,
- 0x01
-};
-
-/* Ethernet+IP+TCP, indicating BGP */
-guint8 pkt_bgp[] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x01,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0xa6,
- 0x00, 0x2f, 0x40, 0x00,
- 0x40, 0x06, 0x3c, 0x21,
- 0x7f, 0x00, 0x00, 0x01,
- 0x7f, 0x00, 0x00, 0x01,
-
- 0x30, 0x39, 0x00, 0xb3,
- 0xac, 0x02, 0x1e, 0x69,
- 0xab, 0x74, 0xab, 0x64,
- 0x80, 0x18, 0x79, 0x60,
- 0xc4, 0xb8, 0x00, 0x00,
- 0x01, 0x01, 0x08, 0x0a,
- 0x00, 0x00, 0x48, 0xf5,
- 0x00, 0x00, 0x48, 0xf5,
-
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff,
-};
-
-/* Ethernet+IP+TCP, indicating TDS NetLib */
-guint8 pkt_tds[] = {
- 0x00, 0x50, 0x8b, 0x0d,
- 0x7a, 0xed, 0x00, 0x08,
- 0xa3, 0x98, 0x39, 0x81,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x03, 0x8d,
- 0x90, 0xd4, 0x40, 0x00,
- 0x7c, 0x06, 0xc3, 0x1b,
- 0xac, 0x14, 0x02, 0x22,
- 0x0a, 0xc2, 0xee, 0x82,
-
- 0x05, 0x99, 0x08, 0xf8,
- 0xff, 0x4e, 0x85, 0x46,
- 0xa2, 0xb4, 0x42, 0xaa,
- 0x50, 0x18, 0x3c, 0x28,
- 0x0f, 0xda, 0x00, 0x00,
-};
-
-/* Ethernet+IP, indicating SCTP */
-guint8 pkt_sctp[] = {
- 0x00, 0xa0, 0x80, 0x00,
- 0x5e, 0x46, 0x08, 0x00,
- 0x03, 0x4a, 0x00, 0x35,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x7c,
- 0x14, 0x1c, 0x00, 0x00,
- 0x3b, 0x84, 0x4a, 0x54,
- 0x0a, 0x1c, 0x06, 0x2b,
- 0x0a, 0x1c, 0x06, 0x2c,
-};
-
-
-/* Ethernet+IP+SCTP, indicating MEGACO */
-guint8 pkt_megaco[] = {
- 0x00, 0xa0, 0x80, 0x00,
- 0x5e, 0x46, 0x08, 0x00,
- 0x03, 0x4a, 0x00, 0x35,
- 0x08, 0x00,
-
- 0x45, 0x00, 0x00, 0x7c,
- 0x14, 0x1c, 0x00, 0x00,
- 0x3b, 0x84, 0x4a, 0x54,
- 0x0a, 0x1c, 0x06, 0x2b,
- 0x0a, 0x1c, 0x06, 0x2c,
-
- 0x40, 0x00, 0x0b, 0x80,
- 0x00, 0x01, 0x6f, 0x0a,
- 0x6d, 0xb0, 0x18, 0x82,
- 0x00, 0x03, 0x00, 0x5b,
- 0x28, 0x02, 0x43, 0x45,
- 0x00, 0x00, 0xa0, 0xbd,
- 0x00, 0x00, 0x00, 0x07,
-};
-
-/* This little data table drives the whole program */
-pkt_example examples[] = {
- { "arp", "Address Resolution Protocol",
- PKT_ARP, WTAP_ENCAP_ETHERNET,
- pkt_arp, array_length(pkt_arp),
- NULL, 0 },
-
- { "bgp", "Border Gateway Protocol",
- PKT_BGP, WTAP_ENCAP_ETHERNET,
- pkt_bgp, array_length(pkt_bgp),
- NULL, 0 },
-
- { "bvlc", "BACnet Virtual Link Control",
- PKT_BVLC, WTAP_ENCAP_ETHERNET,
- pkt_bvlc, array_length(pkt_bvlc),
- NULL, 0 },
-
- { "dns", "Domain Name Service",
- PKT_DNS, WTAP_ENCAP_ETHERNET,
- pkt_dns, array_length(pkt_dns),
- NULL, 0 },
-
- { "eth", "Ethernet",
- PKT_ETHERNET, WTAP_ENCAP_ETHERNET,
- NULL, 0,
- NULL, 0 },
-
- { "fddi", "Fiber Distributed Data Interface",
- PKT_FDDI, WTAP_ENCAP_FDDI,
- NULL, 0,
- NULL, 0 },
-
- { "giop", "General Inter-ORB Protocol",
- PKT_GIOP, WTAP_ENCAP_ETHERNET,
- pkt_giop, array_length(pkt_giop),
- NULL, 0 },
-
- { "icmp", "Internet Control Message Protocol",
- PKT_ICMP, WTAP_ENCAP_ETHERNET,
- pkt_icmp, array_length(pkt_icmp),
- NULL, 0 },
-
- { "ip", "Internet Protocol",
- PKT_IP, WTAP_ENCAP_ETHERNET,
- pkt_ip, array_length(pkt_ip),
- NULL, 0 },
-
- { "llc", "Logical Link Control",
- PKT_LLC, WTAP_ENCAP_TOKEN_RING,
- pkt_llc, array_length(pkt_llc),
- NULL, 0 },
-
- { "m2m", "WiMAX M2M Encapsulation Protocol",
- PKT_M2M, WTAP_ENCAP_ETHERNET,
- pkt_m2m, array_length(pkt_m2m),
- NULL, 0 },
-
- { "megaco", "MEGACO",
- PKT_MEGACO, WTAP_ENCAP_ETHERNET,
- pkt_megaco, array_length(pkt_megaco),
- NULL, 0 },
-
- { "nbns", "NetBIOS-over-TCP Name Service",
- PKT_NBNS, WTAP_ENCAP_ETHERNET,
- pkt_nbns, array_length(pkt_nbns),
- NULL, 0 },
-
- { "ncp2222", "NetWare Core Protocol",
- PKT_NCP2222, WTAP_ENCAP_TOKEN_RING,
- pkt_ncp2222, array_length(pkt_ncp2222),
- NULL, 0 },
-
- { "sctp", "Stream Control Transmission Protocol",
- PKT_SCTP, WTAP_ENCAP_ETHERNET,
- pkt_sctp, array_length(pkt_sctp),
- NULL, 0 },
-
- { "syslog", "Syslog message",
- PKT_SYSLOG, WTAP_ENCAP_ETHERNET,
- pkt_syslog, array_length(pkt_syslog),
- NULL, 0 },
-
- { "tds", "TDS NetLib",
- PKT_TDS, WTAP_ENCAP_ETHERNET,
- pkt_tds, array_length(pkt_tds),
- NULL, 0 },
-
- { "tcp", "Transmission Control Protocol",
- PKT_TCP, WTAP_ENCAP_TOKEN_RING,
- pkt_tcp, array_length(pkt_tcp),
- NULL, 0 },
-
- { "tr", "Token-Ring",
- PKT_TR, WTAP_ENCAP_TOKEN_RING,
- NULL, 0,
- NULL, 0 },
-
- { "udp", "User Datagram Protocol",
- PKT_UDP, WTAP_ENCAP_ETHERNET,
- pkt_udp, array_length(pkt_udp),
- NULL, 0 },
-
- { "usb", "Universal Serial Bus",
- PKT_USB, WTAP_ENCAP_USB,
- NULL, 0,
- NULL, 0 },
-
- { "usb-linux", "Universal Serial Bus with Linux specific header",
- PKT_USB_LINUX, WTAP_ENCAP_USB_LINUX,
- NULL, 0,
- NULL, 0 },
-
-};
-
-
-
-static int parse_type(char *string);
-static void usage(gboolean is_error);
-static void seed(void);
-
-static pkt_example* find_example(int type);
+/*
+ * Report additional information for an error in command-line arguments.
+ */
+static void
+failure_message_cont(const char *msg_format, va_list ap)
+{
+ vfprintf(stderr, msg_format, ap);
+ fprintf(stderr, "\n");
+}
-int
-main(int argc, char **argv)
+/* Print usage statement and exit program */
+static void
+usage(gboolean is_error)
{
+ FILE *output;
+ char** abbrev_list;
+ char** longname_list;
+ unsigned i = 0;
+
+ if (!is_error) {
+ output = stdout;
+ }
+ else {
+ output = stderr;
+ }
- wtap_dumper *dump;
- struct wtap_pkthdr pkthdr;
- union wtap_pseudo_header *ps_header = &pkthdr.pseudo_header;
- int i, j, len_this_pkt, len_random, err;
- gchar *err_info;
- guint8 buffer[65536];
+ fprintf(output, "Usage: randpkt [-b maxbytes] [-c count] [-t type] [-r] filename\n");
+ fprintf(output, "Default max bytes (per packet) is 5000\n");
+ fprintf(output, "Default count is 1000.\n");
+ fprintf(output, "-r: random packet type selection\n");
+ fprintf(output, "\n");
+ fprintf(output, "Types:\n");
- int opt;
+ /* Get the examples list */
+ randpkt_example_list(&abbrev_list, &longname_list);
+ while (abbrev_list[i] && longname_list[i]) {
+ fprintf(output, "\t%-16s%s\n", abbrev_list[i], longname_list[i]);
+ i++;
+ }
+
+ g_strfreev(abbrev_list);
+ g_strfreev(longname_list);
+
+ fprintf(output, "\nIf type is not specified, a random packet will be chosen\n\n");
+}
- int produce_count = 1000; /* number of pkts to produce */
- int produce_type = PKT_ETHERNET;
+int
+main(int argc, char **argv)
+{
+ char *init_progfile_dir_error;
+ int opt;
+ int produce_type = -1;
char *produce_filename = NULL;
int produce_max_bytes = 5000;
- pkt_example *example;
+ int produce_count = 1000;
+ randpkt_example *example;
+ guint8* type = NULL;
+ int allrandom = FALSE;
+ wtap_dumper *savedump;
+ int ret = EXIT_SUCCESS;
+ static const struct option long_options[] = {
+ {"help", no_argument, NULL, 'h'},
+ {0, 0, 0, 0 }
+ };
+
+ /*
+ * Get credential information for later use.
+ */
+ init_process_policies();
+
+ /*
+ * Attempt to get the pathname of the directory containing the
+ * executable file.
+ */
+ init_progfile_dir_error = init_progfile_dir(argv[0], main);
+ if (init_progfile_dir_error != NULL) {
+ fprintf(stderr,
+ "capinfos: Can't get pathname of directory containing the capinfos program: %s.\n",
+ init_progfile_dir_error);
+ g_free(init_progfile_dir_error);
+ }
+
+ init_report_message(failure_warning_message, failure_warning_message,
+ NULL, NULL, NULL);
+
+ wtap_init(TRUE);
+
+ cmdarg_err_init(failure_warning_message, failure_message_cont);
#ifdef _WIN32
arg_list_utf_16to8(argc, argv);
create_app_running_mutex();
#endif /* _WIN32 */
- while ((opt = getopt(argc, argv, "b:c:ht:")) != -1) {
+ while ((opt = getopt_long(argc, argv, "b:c:ht:r", long_options, NULL)) != -1) {
switch (opt) {
case 'b': /* max bytes */
- produce_max_bytes = atoi(optarg);
+ produce_max_bytes = get_positive_int(optarg, "max bytes");
if (produce_max_bytes > 65536) {
- fprintf(stderr,
- "randpkt: Max bytes is 65536\n");
- exit(1);
+ cmdarg_err("max bytes is > 65536");
+ ret = INVALID_OPTION;
+ goto clean_exit;
}
break;
case 'c': /* count */
- produce_count = atoi(optarg);
+ produce_count = get_positive_int(optarg, "count");
break;
case 't': /* type of packet to produce */
- produce_type = parse_type(optarg);
+ type = g_strdup(optarg);
break;
case 'h':
usage(FALSE);
+ goto clean_exit;
+ break;
+
+ case 'r':
+ allrandom = TRUE;
break;
+
default:
usage(TRUE);
+ ret = INVALID_OPTION;
+ goto clean_exit;
break;
}
}
}
else {
usage(TRUE);
+ ret = INVALID_OPTION;
+ goto clean_exit;
}
- example = find_example(produce_type);
-
-
- dump = wtap_dump_open(produce_filename, WTAP_FILE_TYPE_SUBTYPE_PCAP,
- example->sample_wtap_encap, produce_max_bytes, FALSE /* compressed */, &err);
- if (!dump) {
- fprintf(stderr,
- "randpkt: Error writing to %s\n", produce_filename);
- exit(2);
- }
-
- seed();
-
- /* reduce max_bytes by # of bytes already in sample */
- if (produce_max_bytes <= example->sample_length) {
- fprintf(stderr,
- "randpkt: Sample packet length is %d, which is greater than or equal to\n",
- example->sample_length);
- fprintf(stderr, "your requested max_bytes value of %d\n",
- produce_max_bytes);
- exit(1);
- }
- else {
- produce_max_bytes -= example->sample_length;
- }
-
- memset(&pkthdr, 0, sizeof(pkthdr));
- memset(buffer, 0, sizeof(buffer));
-
- pkthdr.rec_type = REC_TYPE_PACKET;
- pkthdr.presence_flags = WTAP_HAS_TS;
- pkthdr.pkt_encap = example->sample_wtap_encap;
-
- /* Load the sample pseudoheader into our pseudoheader buffer */
- if (example->pseudo_buffer)
- memcpy(ps_header, example->pseudo_buffer, example->pseudo_length);
-
- /* Load the sample into our buffer */
- if (example->sample_buffer)
- memcpy(&buffer[0], example->sample_buffer, example->sample_length);
-
- /* Produce random packets */
- for (i = 0; i < produce_count; i++) {
- if (produce_max_bytes > 0) {
- len_random = (rand() % produce_max_bytes + 1);
- }
- else {
- len_random = 0;
- }
-
- len_this_pkt = example->sample_length + len_random;
-
- pkthdr.caplen = len_this_pkt;
- pkthdr.len = len_this_pkt;
- pkthdr.ts.secs = i; /* just for variety */
-
- for (j = example->pseudo_length; j < (int) sizeof(*ps_header); j++) {
- ((guint8*)ps_header)[j] = (rand() % 0x100);
- }
+ if (!allrandom) {
+ produce_type = randpkt_parse_type(type);
+ g_free(type);
- for (j = example->sample_length; j < len_this_pkt; j++) {
- /* Add format strings here and there */
- if ((int) (100.0*rand()/(RAND_MAX+1.0)) < 3 && j < (len_random - 3)) {
- memcpy(&buffer[j], "%s", 3);
- j += 2;
- } else {
- buffer[j] = (rand() % 0x100);
- }
+ example = randpkt_find_example(produce_type);
+ if (!example) {
+ ret = INVALID_OPTION;
+ goto clean_exit;
}
- /* XXX - report errors! */
- if (!wtap_dump(dump, &pkthdr, &buffer[0], &err, &err_info)) {
- if (err_info != NULL)
- g_free(err_info);
- }
- }
-
- wtap_dump_close(dump, &err);
-
- return 0;
-
-}
-
-/* Print usage statement and exit program */
-static void
-usage(gboolean is_error)
-{
- FILE *output;
- int num_entries = array_length(examples);
- int i;
-
- if (!is_error) {
- output = stdout;
- }
- else {
- output = stderr;
- }
-
- fprintf(output, "Usage: randpkt [-b maxbytes] [-c count] [-t type] filename\n");
- fprintf(output, "Default max bytes (per packet) is 5000\n");
- fprintf(output, "Default count is 1000.\n");
- fprintf(output, "Types:\n");
-
- for (i = 0; i < num_entries; i++) {
- fprintf(output, "\t%-16s%s\n", examples[i].abbrev, examples[i].longname);
- }
-
- fprintf(output, "\n");
-
- exit(is_error ? 1 : 0);
-}
-
-/* Parse command-line option "type" and return enum type */
-static
-int parse_type(char *string)
-{
- int num_entries = array_length(examples);
- int i;
-
- for (i = 0; i < num_entries; i++) {
- if (strcmp(examples[i].abbrev, string) == 0) {
- return examples[i].produceable_type;
+ ret = randpkt_example_init(example, produce_filename, produce_max_bytes);
+ if (ret != EXIT_SUCCESS)
+ goto clean_exit;
+ randpkt_loop(example, produce_count);
+ } else {
+ if (type) {
+ fprintf(stderr, "Can't set type in random mode\n");
+ ret = INVALID_TYPE;
+ goto clean_exit;
}
- }
- /* Complain */
- fprintf(stderr, "randpkt: Type %s not known.\n", string);
- exit(1);
-}
-
-/* Find pkt_example record and return pointer to it */
-static
-pkt_example* find_example(int type)
-{
- int num_entries = array_length(examples);
- int i;
-
- for (i = 0; i < num_entries; i++) {
- if (examples[i].produceable_type == type) {
- return &examples[i];
+ produce_type = randpkt_parse_type(NULL);
+ example = randpkt_find_example(produce_type);
+ if (!example) {
+ ret = INVALID_OPTION;
+ goto clean_exit;
}
- }
+ ret = randpkt_example_init(example, produce_filename, produce_max_bytes);
+ if (ret != EXIT_SUCCESS)
+ goto clean_exit;
- fprintf(stderr,
- "randpkt: Internal error. Type %d has no entry in examples table.\n",
- type);
- exit(1);
-}
-
-/* Seed the random-number generator */
-void
-seed(void)
-{
- unsigned int randomness;
- time_t now;
-#ifndef _WIN32
- int fd;
- ssize_t ret;
+ while (produce_count-- > 0) {
+ randpkt_loop(example, 1);
+ produce_type = randpkt_parse_type(NULL);
-#define RANDOM_DEV "/dev/urandom"
+ savedump = example->dump;
- /*
- * Assume it's at least worth trying /dev/urandom on UN*X.
- * If it doesn't exist, fall back on time().
- *
- * XXX - Use CryptGenRandom on Windows?
- */
- fd = ws_open(RANDOM_DEV, O_RDONLY);
- if (fd == -1) {
- if (errno != ENOENT) {
- fprintf(stderr,
- "randpkt: Could not open " RANDOM_DEV " for reading: %s\n",
- g_strerror(errno));
- exit(2);
+ example = randpkt_find_example(produce_type);
+ if (!example) {
+ ret = INVALID_OPTION;
+ goto clean_exit;
+ }
+ example->dump = savedump;
}
- goto fallback;
- }
-
- ret = ws_read(fd, &randomness, sizeof randomness);
- if (ret == -1) {
- fprintf(stderr,
- "randpkt: Could not read from " RANDOM_DEV ": %s\n",
- g_strerror(errno));
- exit(2);
}
- if ((size_t)ret != sizeof randomness) {
- fprintf(stderr,
- "randpkt: Tried to read %lu bytes from " RANDOM_DEV ", got %ld\n",
- (unsigned long)sizeof randomness, (long)ret);
- exit(2);
+ if (!randpkt_example_close(example)) {
+ ret = CLOSE_ERROR;
}
- srand(randomness);
- ws_close(fd);
- return;
-
-fallback:
-#endif
- now = time(NULL);
- randomness = (unsigned int) now;
- srand(randomness);
+clean_exit:
+ wtap_cleanup();
+ return ret;
}
/*
git.samba.org / metze / wireshark / wip.git / blobdiff