int main(int argc, char *argv[])
{
// Initialise the cfg structure (this sets up a linked list
// of key / value pairs)
struct Config *cfg = cfg_init("settings.cfg");
// Search for a key. Note that the return value is a pointer
// in the cfg structure so should NOT be freed (it is freed
// eventually by cfg_free.);
char *value = cfg_get_string(cfg, "barney", "The default value");
printf("\"%s\"\n", value);
// Search for a non-existent key to show default value being returned
char *value2 = cfg_get_string(cfg, "non-existent", "A default value");
printf("\"%s\"\n", value2);
// Get a number
long num = cfg_get_long(cfg, "NuMbEr", 69);
printf("Number is %ld\n", num);
// Dump everything - showing the cfg_foreach() function
printf("DEBUG dump all:\n");
cfg_foreach(cfg, callback);
// Finally tear down the cfg structure. This will invalidate any
// strings we've been returned, so we should make copies of
// anything we want to keep first.
cfg_free(cfg);
return 0;
}
int device_script(int fd, const char *section, struct gn_statemachine *state)
{
pid_t pid;
const char *scriptname;
int status;
if (!strcmp(section, "connect_script"))
scriptname = state->config.connect_script;
else
scriptname = state->config.disconnect_script;
if (scriptname[0] == '\0')
return 0;
errno = 0;
switch ((pid = fork())) {
case -1:
fprintf(stderr, _("device_script(\"%s\"): fork() failure: %s!\n"), scriptname, strerror(errno));
return -1;
case 0: /* child */
cfg_foreach(section, device_script_cfgfunc);
errno = 0;
if (dup2(fd, 0) != 0 || dup2(fd, 1) != 1 || close(fd)) {
fprintf(stderr, _("device_script(\"%s\"): file descriptor preparation failure: %s\n"), scriptname, strerror(errno));
_exit(-1);
}
/* FIXME: close all open descriptors - how to track them?
*/
execl("/bin/sh", "sh", "-c", scriptname, NULL);
fprintf(stderr, _("device_script(\"%s\"): script execution failure: %s\n"), scriptname, strerror(errno));
_exit(-1);
/* NOTREACHED */
default:
if (pid == waitpid(pid, &status, 0 /* options */) && WIFEXITED(status) && !WEXITSTATUS(status))
return 0;
fprintf(stderr, _("device_script(\"%s\"): child script execution failure: %s, exit code=%d\n"), scriptname,
(WIFEXITED(status) ? _("normal exit") : _("abnormal exit")),
(WIFEXITED(status) ? WEXITSTATUS(status) : -1));
errno = EIO;
return -1;
}
/* NOTREACHED */
}
