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tools/dirtpan/: if given an interface conf command, run it with tunX in $ITF
- dirtpan.c (open_tun): if a command is given, set the environment variable ITF to the interface name and system(3) the command - dirtpan.c (usage, main): accept an interface configuration command as the 4th command-line argument
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@ -17,9 +17,11 @@
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <assert.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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#include <sys/select.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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@ -474,10 +476,10 @@ static int open_net(uint16_t pan, uint16_t me, uint16_t peer)
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}
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static int open_tun(void)
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static int open_tun(const char *cmd)
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{
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struct ifreq ifr;
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int fd;
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int fd, res;
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fd = open(TUN_DEV, O_RDWR);
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if (fd < 0) {
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@ -493,9 +495,33 @@ static int open_tun(void)
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exit(1);
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}
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fprintf(stderr, "%s\n", ifr.ifr_name);
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if (!cmd) {
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fprintf(stderr, "%s\n", ifr.ifr_name);
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return fd;
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}
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return fd;
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if (setenv("ITF", ifr.ifr_name, 1) < 0) {
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perror("setenv");
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exit(1);
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}
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res = system(cmd);
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if (res < 0) {
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perror("system");
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exit(1);
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}
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if (WIFEXITED(res)) {
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if (!WEXITSTATUS(res))
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return fd;
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exit(WEXITSTATUS(res));
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}
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if (WIFSIGNALED(res)) {
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raise(WTERMSIG(res));
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exit(1);
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}
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fprintf(stderr, "cryptic exit status %d\n", res);
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exit(1);
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}
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@ -504,8 +530,9 @@ static int open_tun(void)
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static void usage(const char *name)
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{
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fprintf(stderr, "usage: %s [-d [-d]] pan_id src_addr dst_addr\n",
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name);
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fprintf(stderr,
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"usage: %s [-d [-d]] pan_id src_addr dst_addr [command]\n"
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, name);
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exit(1);
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}
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@ -526,6 +553,7 @@ static uint16_t addr(const char *name, const char *s)
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int main(int argc, char **argv)
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{
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const char *cmd = NULL;
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uint16_t pan, src, dst;
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int c;
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@ -539,6 +567,9 @@ int main(int argc, char **argv)
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}
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switch (argc-optind) {
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case 4:
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cmd = argv[optind+3];
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/* fall through */
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case 3:
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pan = addr(*argv, argv[optind]);
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src = addr(*argv, argv[optind+1]);
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@ -549,7 +580,7 @@ int main(int argc, char **argv)
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}
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net = open_net(pan, src, dst);
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tun = open_tun();
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tun = open_tun(cmd);
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while (1)
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event();
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