static int list_plugins(args_t *args)
{
plugin_t *plugins = NULL;
int nplugins = 0, mplugins = 0;
init_plugin_paths(args);
kstring_t str = {0,0,0};
int i;
for (i=0; i<args->nplugin_paths; i++)
{
DIR *dp = opendir(args->plugin_paths[i]);
if ( dp==NULL ) continue;
struct dirent *ep;
while ( (ep=readdir(dp)) )
{
int len = strlen(ep->d_name);
if ( strcasecmp(".so",ep->d_name+len-3) ) continue;
str.l = 0;
ksprintf(&str,"%s/%s", args->plugin_paths[i],ep->d_name);
hts_expand(plugin_t, nplugins+1, mplugins, plugins);
if ( load_plugin(args, str.s, 0, &plugins[nplugins]) < 0 ) continue;
nplugins++;
str.l = 0;
kputs(ep->d_name, &str);
int l = str.l - 1;
while ( l>=0 && str.s[l]!='.' ) l--;
if ( l>=0 ) str.s[l] = 0;
free(plugins[nplugins-1].name);
plugins[nplugins-1].name = strdup(str.s); // use a short name
}
closedir(dp);
}
if ( nplugins )
{
qsort(plugins, nplugins, sizeof(plugins[0]), cmp_plugin_name);
for (i=0; i<nplugins; i++)
printf("\n-- %s --\n%s", plugins[i].name, plugins[i].about());
printf("\n");
}
else
print_plugin_usage_hint();
free(str.s);
return nplugins ? 0 : 1;
}
static int load_plugin(args_t *args, const char *fname, int exit_on_error, plugin_t *plugin)
{
plugin->name = strdup(fname);
plugin->handle = dlopen_plugin(args, fname);
if ( !plugin->handle )
{
if ( exit_on_error )
{
print_plugin_usage_hint();
error("Could not load \"%s\".\n\n", fname);
}
return -1;
}
dlerror();
plugin->init = (dl_init_f) dlsym(plugin->handle, "init");
char *ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
return -1;
}
plugin->version = (dl_version_f) dlsym(plugin->handle, "version");
ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
return -1;
}
plugin->about = (dl_about_f) dlsym(plugin->handle, "about");
ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
return -1;
}
plugin->usage = (dl_about_f) dlsym(plugin->handle, "usage");
ret = dlerror();
if ( ret )
plugin->usage = plugin->about;
plugin->process = (dl_process_f) dlsym(plugin->handle, "process");
ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
return -1;
}
plugin->destroy = (dl_destroy_f) dlsym(plugin->handle, "destroy");
ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
return -1;
}
return 0;
}
static int load_plugin(args_t *args, const char *fname, int exit_on_error, plugin_t *plugin)
{
plugin->name = strdup(fname);
plugin->handle = dlopen_plugin(args, fname);
if ( !plugin->handle )
{
if ( exit_on_error )
{
print_plugin_usage_hint();
error("Could not load \"%s\".\n\n", fname);
}
return -1;
}
dlerror();
plugin->init = (dl_init_f) dlsym(plugin->handle, "init");
char *ret = dlerror();
if ( ret )
plugin->init = NULL;
else if ( args->verbose ) fprintf(stderr,"\tinit .. ok\n");
plugin->run = (dl_run_f) dlsym(plugin->handle, "run");
ret = dlerror();
if ( ret )
plugin->run = NULL;
else if ( args->verbose ) fprintf(stderr,"\trun .. ok\n");
if ( !plugin->init && !plugin->run )
{
if ( exit_on_error ) error("Could not initialize %s, neither run or init found \n", plugin->name);
else if ( args->verbose ) fprintf(stderr,"\tinit/run .. not found\n");
return -1;
}
plugin->version = (dl_version_f) dlsym(plugin->handle, "version");
ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s, version string not found\n", plugin->name);
else if ( args->verbose ) fprintf(stderr,"\tversion .. not found\n");
return -1;
}
plugin->about = (dl_about_f) dlsym(plugin->handle, "about");
ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
return -1;
}
plugin->usage = (dl_about_f) dlsym(plugin->handle, "usage");
ret = dlerror();
if ( ret )
plugin->usage = plugin->about;
if ( plugin->run ) return 0;
plugin->process = (dl_process_f) dlsym(plugin->handle, "process");
ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
return -1;
}
plugin->destroy = (dl_destroy_f) dlsym(plugin->handle, "destroy");
ret = dlerror();
if ( ret )
{
if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
return -1;
}
return 0;
}
