void cache_object_init(struct cache_object *co)
{
cache_index_init(&co->ci);
cache_init(&co->cc);
open_index_file(&co->ci);
read_cache_index_file(&co->ci);
open_cache_file(&co->cc);
read_cache_file(&co->cc);
}
/* Prepare for a sequential iteration over the cache file. */
static krb5_error_code KRB5_CALLCONV
fcc_start_seq_get(krb5_context context, krb5_ccache id, krb5_cc_cursor *cursor)
{
krb5_fcc_cursor *fcursor;
krb5_error_code ret;
fcc_data *data = id->data;
k5_cc_mutex_lock(context, &data->lock);
fcursor = malloc(sizeof(krb5_fcc_cursor));
if (fcursor == NULL) {
k5_cc_mutex_unlock(context, &data->lock);
return KRB5_CC_NOMEM;
}
if (OPENCLOSE(id)) {
ret = open_cache_file(context, id, FCC_OPEN_RDONLY);
if (ret) {
free(fcursor);
k5_cc_mutex_unlock(context, &data->lock);
return ret;
}
}
/* Make sure we start reading right after the primary principal */
ret = skip_header(context, id);
if (ret) {
free(fcursor);
goto done;
}
ret = skip_principal(context, id);
if (ret) {
free(fcursor);
goto done;
}
fcursor->pos = fcc_lseek(data, 0, SEEK_CUR);
*cursor = (krb5_cc_cursor)fcursor;
done:
MAYBE_CLOSE(context, id, ret);
k5_cc_mutex_unlock(context, &data->lock);
return ret;
}
int main(int argc, char *argv[])
{
struct cmdline_options opts = {
.cache_file = CACHE_FILE,
.base_oid = BASE_OID,
.conf_file = CONF_FILE,
.cache_prog = CACHE_REGEN_PROG,
};
bool is_ok;
int cache_fd;
struct cache_entry *cache_entries;
size_t num_cache_entries;
int rc;
unsigned int attr_idx = SNMPD_IDX_UNKNOWN;
size_t req_cache_idx;
struct oid_info const *sub_oid;
size_t base_oid_len;
while (1) {
int c = getopt_long(argc, argv, "gns", CMDLINE_OPTIONS, 0);
if (c==-1) break;
switch (c) {
case CMD_HELP: show_help();
case CMD_VERSION: show_version();
case CMD_BASE_OID: opts.base_oid = optarg; break;
case CMD_CACHE: opts.cache_file = optarg; break;
case CMD_CACHE_PROGRAM: opts.cache_prog = optarg; break;
case CMD_CONF: opts.conf_file = optarg; break;
case 'g': opts.op_get = 1; break;
case 's': opts.op_set = 1; break;
case 'n': opts.op_get_next = 1; break;
default:
fputs("Try '--help' for more information.\n", stderr);
exit(EX_USAGE);
}
}
is_ok = false;
base_oid_len = strlen(opts.base_oid);
if (opts.op_get + opts.op_set + opts.op_get_next > 1)
fputs("more than one operation specified\n", stderr);
else if (opts.op_get + opts.op_set + opts.op_get_next == 0)
fputs("no operation specified\n", stderr);
else if (optind + 1 != argc)
fputs("no/too much OID specified\n", stderr);
else if (strncmp(opts.base_oid, argv[optind], base_oid_len) &&
argv[optind][base_oid_len] != '\0' &&
argv[optind][base_oid_len] != '.')
fputs("unsupported OID\n", stderr);
else if (!parse_oid(&argv[optind][base_oid_len], &sub_oid, &attr_idx))
; /* noop */
else if ((opts.op_get || opts.op_set) &&
(sub_oid == NULL || attr_idx == SNMPD_IDX_UNKNOWN ||
(sub_oid->num_suboid && attr_idx >= sub_oid->num_suboid))) {
fprintf(stderr, "sub_oid=%p, idx=%u\n", sub_oid, attr_idx);
fputs("unknown OID\n", stderr);
return EX_UNAVAILABLE;
} else
is_ok = true;
if (!is_ok)
exit(EX_USAGE);
if (opts.op_set) {
puts("not-writable");
return EXIT_SUCCESS;
}
if (opts.op_get_next && sub_oid == NULL) {
sub_oid = &SUB_OIDS[0];
assert(attr_idx == SNMPD_IDX_UNKNOWN);
}
assert(sub_oid != NULL);
cache_fd = open_cache_file(opts.conf_file, opts.cache_file, opts.cache_prog);
if (cache_fd < 0)
exit(-cache_fd);
rc = read_cache_file(cache_fd, &cache_entries, &num_cache_entries);
if (rc < 0)
exit(-rc);
close(cache_fd);
if (sub_oid->num_suboid == 0) {
size_t i;
if (attr_idx == SNMPD_IDX_UNKNOWN && opts.op_get_next)
req_cache_idx = 0;
else
req_cache_idx = num_cache_entries;
for (i = 0; i < num_cache_entries; ++i) {
if (cache_entries[i].idx != attr_idx)
continue;
req_cache_idx = i;
if (opts.op_get_next) {
++req_cache_idx;
if (req_cache_idx >= num_cache_entries) {
req_cache_idx = 0;
++sub_oid;
}
}
break;
}
} else if (opts.op_get_next) {
if (attr_idx == SNMPD_IDX_UNKNOWN)
req_cache_idx = 0;
else if (attr_idx + 1 != sub_oid->num_suboid)
req_cache_idx = attr_idx;
else {
req_cache_idx = 0;
++sub_oid;
}
} else
req_cache_idx = attr_idx;
assert(sub_oid->num_suboid == 0 || req_cache_idx < sub_oid->num_suboid);
if (sub_oid->idx == SNMPD_OID_METADATA) {
print_metadata(opts.base_oid, sub_oid, req_cache_idx,
num_cache_entries);
} else if (req_cache_idx < num_cache_entries && sub_oid->oid != 0) {
rc = read_sysfs_cache(&cache_entries[req_cache_idx]);
if (rc < 0)
exit(-rc);
print_cache(&cache_entries[req_cache_idx],
opts.base_oid, sub_oid);
}
free(cache_entries);
}