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/*
* Config file handling
*
* Copyright (C) 2001-2002, Olaf Kirch <okir@lst.de>
*/
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include "resmgrd.h"
static const char * config_file_name = _PATH_RESMGR_CONF;
const char * res_config_lock_dir = _PATH_LOCKS;
static void res_config_parse(const char *fname);
/*
* Set the name of the static ACL file
*/
void
res_config_set_filename(const char *name)
{
if (name == NULL)
name = _PATH_RESMGR_CONF;
config_file_name = name;
}
/*
* Reload the static device ACLs
*/
void
res_config_reload(void)
{
res_class_t *cl;
/* Clear all static ACLs */
while ((cl = res_classes) != NULL) {
res_classes = cl->next;
res_class_free(cl);
}
/* The reload the ACL file */
res_config_parse(config_file_name);
}
/*
* Parse the config file.
*/
static void
res_config_parse(const char *fname)
{
char buffer[512];
unsigned int line = 0;
FILE *fp;
if ((fp = fopen(fname, "r")) == NULL)
fatal("unable to open %s: %m", fname);
while (fgets(buffer, sizeof(buffer), fp) != NULL) {
unsigned int n = 0, argc;
char *argv[16];
char *kwd;
line++;
if (!(argc = line_split(buffer, argv, 16)))
continue;
kwd = argv[n++];
if (!strcmp(kwd, "class")) {
char *name;
if (argc != 2) {
fatal("%s:%u: bad number of arguments "
"in \"class\" statement\n",
fname, line);
}
name = argv[1];
if (res_class_get(name)) {
fatal("%s:%u: class \"%s\" redefined",
fname, line, name);
}
res_class_create(name);
} else
if (!strcmp(kwd, "add")) {
char *devname, *clsname;
res_device_t *dev;
res_class_t *cls;
if (argc < 3) {
fatal("%s:%u: missing argument "
"in \"add\" statement\n",
fname, line);
}
devname = argv[1];
clsname = argv[2];
if (!(cls = res_class_get(clsname))) {
fatal("%s:%u: unknown class \"%s\"",
fname, line, clsname);
}
dev = res_class_add(cls, devname, 0);
for (n = 3; n < argc; n++) {
res_family_t *family;
const char *opt = argv[n];
if (!strcmp(opt, "read-only"))
dev->flags |= DEV_FLAGS_RO;
else
if ((family = res_family_get(opt)) != NULL)
dev->flags |= family->access_flags;
else {
fatal("%s:%u: invalid flag \"%s\"",
fname, line, opt);
}
}
} else
if (!strcmp(kwd, "allow") || !strcmp(kwd, "deny")) {
res_class_t *cls;
char *name;
res_acl_t *acl;
if (n + 1 >= argc) {
fatal("%s:%u: missing argument "
"in \"allow\" statement\n",
fname, line);
}
name = argv[n++];
if (!(cls = res_class_get(name))) {
fatal("%s:%u: unknown class \"%s\"",
fname, line, name);
}
if (!(acl = res_acl_parse(argc-n, argv+n))) {
fatal("%s:%u: failed to parse ACL",
fname, line);
}
res_acl_add(&cls->acl, acl, kwd[0] == 'a'? 1 : -1);
} else {
fatal("%s:%u: invalid keyword \"%s\"",
fname, line, kwd);
}
}
fclose(fp);
}
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