tests/udplog: new program to log packets sent by speaker during

[disorder] / tests / udplog.c

diff --git a/tests/udplog.c b/tests/udplog.c
new file mode 100644 (file)
index 0000000..4d52efc
--- /dev/null
+++ b/tests/udplog.c
@@ -0,0 +1,150 @@
+/*
+ * This file is part of DisOrder
+ * Copyright (C) 2007 Richard Kettlewell
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include <config.h>
+#include "types.h"
+
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include <locale.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#include "configuration.h"
+#include "syscalls.h"
+#include "log.h"
+#include "addr.h"
+#include "defs.h"
+#include "mem.h"
+
+static const struct option options[] = {
+  { "help", no_argument, 0, 'h' },
+  { "version", no_argument, 0, 'V' },
+  { "output", required_argument, 0, 'o' },
+  { 0, 0, 0, 0 }
+};
+
+/* display usage message and terminate */
+static void help(void) {
+  xprintf("Usage:\n"
+         "  disorder-udplog [OPTIONS] ADDRESS PORT\n"
+         "Options:\n"
+         "  --output, -o PATH       Output to PATH (default: stdout)\n"
+         "  --help, -h              Display usage message\n"
+         "  --version, -V           Display version number\n"
+          "\n"
+          "UDP packet receiver.\n");
+  xfclose(stdout);
+  exit(0);
+}
+
+/* display version number and terminate */
+static void version(void) {
+  xprintf("disorder-udplog version %s\n", disorder_version_string);
+  xfclose(stdout);
+  exit(0);
+}
+
+int main(int argc, char **argv) {
+  int n, fd, err, i, j;
+  struct addrinfo *ai;
+  struct stringlist a;
+  char *name, h[4096], s[4096];
+  uint8_t buffer[4096];
+  union {
+    struct sockaddr sa;
+    struct sockaddr_in sin;
+    struct sockaddr_in6 sin6;
+  } sa;
+  socklen_t len;
+  static const struct addrinfo pref = {
+    0,                         /* ai_flags */
+    AF_UNSPEC,                 /* ai_family */
+    SOCK_DGRAM,                        /* ai_socktype */
+    IPPROTO_UDP,               /* ai_protocol */
+    0,
+    0,
+    0,
+    0
+  };
+  
+  set_progname(argv);
+  mem_init();
+  if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale");
+  while((n = getopt_long(argc, argv, "hVo:", options, 0)) >= 0) {
+    switch(n) {
+    case 'h': help();
+    case 'V': version();
+    case 'o':
+      if(!freopen(optarg, "w", stdout))
+       fatal(errno, "%s", optarg);
+      break;
+    default: fatal(0, "invalid option");
+    }
+  }
+  if(optind + 2 != argc)
+    fatal(0, "missing arguments");
+  a.n = 2;
+  a.s = &argv[optind];
+  if(!(ai = get_address(&a, &pref, &name)))
+    exit(1);
+  fd = xsocket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+  if(bind(fd, ai->ai_addr, ai->ai_addrlen) < 0)
+    fatal(errno, "error binding to %s", name);
+  while(getppid() != 1) {
+    len = sizeof sa;
+    n = recvfrom(fd, buffer, sizeof buffer, 0, &sa.sa, &len);
+    if(n < 0) {
+      if(errno == EINTR || errno == EAGAIN)
+       continue;
+      fatal(errno, "%s: recvfrom", name);
+    }
+    if((err = getnameinfo(&sa.sa, len, h, sizeof h, s, sizeof s,
+                         NI_NUMERICHOST|NI_NUMERICSERV|NI_DGRAM)))
+      fatal(0, "getnameinfo: %s", gai_strerror(err));
+    xprintf("from host %s service %s: %d bytes\n", h, s, n);
+    for(i = 0; i < n; i += 16) {
+      for(j = i; j < n && j < i + 16; ++j)
+       xprintf(" %02x", buffer[j]);
+      for(; j < i + 16; ++j)
+       xprintf("   ");
+      xprintf("  ");
+      for(j = i; j < n && j < i + 16; ++j)
+       xprintf("%c", buffer[j] < 128 && isprint(buffer[j]) ? buffer[j] : '.');
+      xprintf("\n");
+      if(fflush(stdout) < 0)
+       fatal(errno, "stdout");
+    }
+  }
+  return 0;
+}
+
+/*
+Local Variables:
+c-basic-offset:2
+comment-column:40
+fill-column:79
+indent-tabs-mode:nil
+End:
+*/