static void load_plugin_conf(conf_llist *plugin)
{
DIR *d;
/* init plugin list */
plist_create(plugin);
/* read configs */
d = opendir(plugin_dir);
if (d) {
struct dirent *e;
while ((e = readdir(d))) {
plugin_conf_t config;
char fname[PATH_MAX];
// Don't run backup files, hidden files, or dirs
if (e->d_name[0] == '.' || count_dots(e->d_name) > 1)
continue;
snprintf(fname, sizeof(fname), "%s%s",
plugin_dir, e->d_name);
clear_pconfig(&config);
if (load_pconfig(&config, fname) == 0) {
/* Push onto config list only if active */
if (config.active == A_YES)
plist_append(plugin, &config);
else
free_pconfig(&config);
} else
syslog(LOG_ERR,
"Skipping %s plugin due to errors",
e->d_name);
}
closedir(d);
}
}
int load_pconfig(plugin_conf_t *config, char *file)
{
int fd, rc, mode, lineno = 1;
struct stat st;
FILE *f;
char buf[160];
clear_pconfig(config);
/* open the file */
mode = O_RDONLY;
rc = open(file, mode);
if (rc < 0) {
if (errno != ENOENT) {
audit_msg(LOG_ERR, "Error opening %s (%s)", file,
strerror(errno));
return 1;
}
audit_msg(LOG_WARNING,
"Config file %s doesn't exist, skipping", file);
return 0;
}
fd = rc;
/* check the file's permissions: owned by root, not world writable,
* not symlink.
*/
if (fstat(fd, &st) < 0) {
audit_msg(LOG_ERR, "Error fstat'ing config file (%s)",
strerror(errno));
close(fd);
return 1;
}
if (st.st_uid != 0) {
audit_msg(LOG_ERR, "Error - %s isn't owned by root",
file);
close(fd);
return 1;
}
if ((st.st_mode & S_IWOTH) == S_IWOTH) {
audit_msg(LOG_ERR, "Error - %s is world writable",
file);
close(fd);
return 1;
}
if (!S_ISREG(st.st_mode)) {
audit_msg(LOG_ERR, "Error - %s is not a regular file",
file);
close(fd);
return 1;
}
/* it's ok, read line by line */
f = fdopen(fd, "rm");
if (f == NULL) {
audit_msg(LOG_ERR, "Error - fdopen failed (%s)",
strerror(errno));
close(fd);
return 1;
}
while (get_line(f, buf, sizeof(buf), &lineno, file)) {
// convert line into name-value pair
const struct kw_pair *kw;
struct nv_pair nv;
rc = nv_split(buf, &nv);
switch (rc) {
case 0: // fine
break;
case 1: // not the right number of tokens.
audit_msg(LOG_ERR,
"Wrong number of arguments for line %d in %s",
lineno, file);
break;
case 2: // no '=' sign
audit_msg(LOG_ERR,
"Missing equal sign for line %d in %s",
lineno, file);
break;
default: // something else went wrong...
audit_msg(LOG_ERR,
"Unknown error for line %d in %s",
lineno, file);
break;
}
if (nv.name == NULL) {
lineno++;
continue;
}
if (nv.value == NULL) {
fclose(f);
return 1;
}
/* identify keyword or error */
kw = kw_lookup(nv.name);
if (kw->name == NULL) {
audit_msg(LOG_ERR,
"Unknown keyword \"%s\" in line %d of %s",
nv.name, lineno, file);
fclose(f);
return 1;
}
/* Check number of options */
if (kw->max_options == 0 && nv.option != NULL) {
audit_msg(LOG_ERR,
"Keyword \"%s\" has invalid option "
"\"%s\" in line %d of %s",
nv.name, nv.option, lineno, file);
fclose(f);
return 1;
}
/* dispatch to keyword's local parser */
rc = kw->parser(&nv, lineno, config);
if (rc != 0) {
fclose(f);
return 1; // local parser puts message out
}
lineno++;
}
fclose(f);
config->name = strdup(basename(file));
if (lineno > 1)
return sanity_check(config, file);
return 0;
}