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heimdal/lib/kadm5/iprop-log.c
Nicolas Williams 9d6dd21256 iprop-log: Add missing error checks
2022-01-19 13:59:04 -06:00

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/*
* Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "iprop.h"
#include <sl.h>
#include <parse_time.h>
#include "iprop-commands.h"
RCSID("$Id$");
static krb5_context context;
static kadm5_server_context *
get_kadmin_context(const char *config_file, char *realm)
{
kadm5_config_params conf;
krb5_error_code ret;
void *kadm_handle;
char *file = NULL;
char **files;
int aret;
if (config_file == NULL) {
aret = asprintf(&file, "%s/kdc.conf", hdb_db_dir(context));
if (aret == -1 || file == NULL)
errx(1, "out of memory");
config_file = file;
}
ret = krb5_prepend_config_files_default(config_file, &files);
free(file);
if (ret)
krb5_err(context, 1, ret, "getting configuration files");
ret = krb5_set_config_files(context, files);
krb5_free_config_files(files);
if (ret)
krb5_err(context, 1, ret, "reading configuration files");
memset(&conf, 0, sizeof(conf));
if(realm) {
conf.mask |= KADM5_CONFIG_REALM;
conf.realm = realm;
}
ret = kadm5_init_with_password_ctx (context,
KADM5_ADMIN_SERVICE,
NULL,
KADM5_ADMIN_SERVICE,
&conf, 0, 0,
&kadm_handle);
if (ret)
krb5_err (context, 1, ret, "kadm5_init_with_password_ctx");
return (kadm5_server_context *)kadm_handle;
}
/*
* dump log
*/
static const char *op_names[] = {
"get",
"delete",
"create",
"rename",
"chpass",
"modify",
"randkey",
"get_privs",
"get_princs",
"chpass_with_key",
"nop"
};
static kadm5_ret_t
print_entry(kadm5_server_context *server_context,
uint32_t ver,
time_t timestamp,
enum kadm_ops op,
uint32_t len,
krb5_storage *sp,
void *ctx)
{
char t[256];
const char *entry_kind = ctx;
int32_t mask;
int32_t nop_time;
uint32_t nop_ver;
hdb_entry ent;
krb5_principal source;
char *name1, *name2;
krb5_data data;
krb5_context scontext = server_context->context;
krb5_error_code ret;
krb5_data_zero(&data);
strftime(t, sizeof(t), "%Y-%m-%d %H:%M:%S", localtime(&timestamp));
if((int)op < (int)kadm_get || (int)op > (int)kadm_nop) {
printf("unknown op: %d\n", op);
return 0;
}
printf ("%s%s: ver = %u, timestamp = %s, len = %u\n",
entry_kind, op_names[op], ver, t, len);
switch(op) {
case kadm_delete:
ret = krb5_ret_principal(sp, &source);
if (ret == 0)
ret = krb5_unparse_name(scontext, source, &name1);
if (ret)
krb5_err(scontext, 1, ret, "Failed to read a delete record");
printf(" %s\n", name1);
free(name1);
krb5_free_principal(scontext, source);
break;
case kadm_rename:
ret = krb5_data_alloc(&data, len);
if (ret == 0)
ret = krb5_ret_principal(sp, &source);
if (ret == 0 && krb5_storage_read(sp, data.data, data.length) == -1)
ret = errno;
if (ret == 0)
ret = hdb_value2entry(scontext, &data, &ent);
if (ret == 0)
ret = krb5_unparse_name(scontext, source, &name1);
if (ret == 0)
ret = krb5_unparse_name(scontext, ent.principal, &name2);
if (ret)
krb5_err(scontext, 1, ret, "Failed to read a rename record");
printf(" %s -> %s\n", name1, name2);
free(name1);
free(name2);
krb5_free_principal(scontext, source);
free_hdb_entry(&ent);
break;
case kadm_create:
ret = krb5_data_alloc(&data, len);
if (ret == 0 && krb5_storage_read(sp, data.data, data.length) == -1)
ret = errno;
if (ret == 0)
ret = hdb_value2entry(scontext, &data, &ent);
if (ret)
krb5_err(scontext, 1, ret, "Failed to read a create record");
mask = ~0;
goto foo;
case kadm_modify:
ret = krb5_data_alloc(&data, len);
if (ret == 0)
ret = krb5_ret_int32(sp, &mask);
if (ret == 0 && krb5_storage_read(sp, data.data, data.length) == -1)
ret = errno;
if (ret == 0)
ret = hdb_value2entry(scontext, &data, &ent);
if (ret)
krb5_err(scontext, 1, ret, "Failed to read a modify record");
foo:
if(ent.principal /* mask & KADM5_PRINCIPAL */) {
ret = krb5_unparse_name(scontext, ent.principal, &name1);
if (ret)
krb5_err(scontext, 1, ret,
"Failed to process a create or modify record");
printf(" principal = %s\n", name1);
free(name1);
}
if(mask & KADM5_PRINC_EXPIRE_TIME) {
if(ent.valid_end == NULL) {
strlcpy(t, "never", sizeof(t));
} else {
strftime(t, sizeof(t), "%Y-%m-%d %H:%M:%S",
localtime(ent.valid_end));
}
printf(" expires = %s\n", t);
}
if(mask & KADM5_PW_EXPIRATION) {
if(ent.pw_end == NULL) {
strlcpy(t, "never", sizeof(t));
} else {
strftime(t, sizeof(t), "%Y-%m-%d %H:%M:%S",
localtime(ent.pw_end));
}
printf(" password exp = %s\n", t);
}
if(mask & KADM5_LAST_PWD_CHANGE) {
}
if(mask & KADM5_ATTRIBUTES) {
unparse_flags(HDBFlags2int(ent.flags),
asn1_HDBFlags_units(), t, sizeof(t));
printf(" attributes = %s\n", t);
}
if(mask & KADM5_MAX_LIFE) {
if(ent.max_life == NULL)
strlcpy(t, "for ever", sizeof(t));
else
unparse_time(*ent.max_life, t, sizeof(t));
printf(" max life = %s\n", t);
}
if(mask & KADM5_MAX_RLIFE) {
if(ent.max_renew == NULL)
strlcpy(t, "for ever", sizeof(t));
else
unparse_time(*ent.max_renew, t, sizeof(t));
printf(" max rlife = %s\n", t);
}
if(mask & KADM5_MOD_TIME) {
printf(" mod time\n");
}
if(mask & KADM5_MOD_NAME) {
printf(" mod name\n");
}
if(mask & KADM5_KVNO) {
printf(" kvno = %d\n", ent.kvno);
}
if(mask & KADM5_MKVNO) {
printf(" mkvno\n");
}
if(mask & KADM5_AUX_ATTRIBUTES) {
printf(" aux attributes\n");
}
if(mask & KADM5_POLICY) {
printf(" policy\n");
}
if(mask & KADM5_POLICY_CLR) {
printf(" mod time\n");
}
if(mask & KADM5_LAST_SUCCESS) {
printf(" last success\n");
}
if(mask & KADM5_LAST_FAILED) {
printf(" last failed\n");
}
if(mask & KADM5_FAIL_AUTH_COUNT) {
printf(" fail auth count\n");
}
if(mask & KADM5_KEY_DATA) {
printf(" key data\n");
}
if(mask & KADM5_TL_DATA) {
printf(" tl data\n");
}
free_hdb_entry(&ent);
break;
case kadm_nop :
if (len == 16) {
uint64_t off;
ret = krb5_ret_uint64(sp, &off);
if (ret)
krb5_err(scontext, 1, ret, "Failed to read a no-op record");
printf("uberblock offset %llu ", (unsigned long long)off);
} else {
printf("nop");
}
if (len == 16 || len == 8) {
ret = krb5_ret_int32(sp, &nop_time);
if (ret == 0)
ret = krb5_ret_uint32(sp, &nop_ver);
if (ret)
krb5_err(scontext, 1, ret, "Failed to read a no-op record");
timestamp = nop_time;
strftime(t, sizeof(t), "%Y-%m-%d %H:%M:%S", localtime(&timestamp));
printf("timestamp %s version %u", t, nop_ver);
}
printf("\n");
break;
default:
krb5_errx(scontext, 1, "Unknown record type");
}
krb5_data_free(&data);
return 0;
}
int
iprop_dump(struct dump_options *opt, int argc, char **argv)
{
kadm5_server_context *server_context;
krb5_error_code ret;
enum kadm_iter_opts iter_opts_1st = 0;
enum kadm_iter_opts iter_opts_2nd = 0;
char *desc_1st = "";
char *desc_2nd = "";
server_context = get_kadmin_context(opt->config_file_string,
opt->realm_string);
if (argc > 0) {
free(server_context->log_context.log_file);
server_context->log_context.log_file = strdup(argv[0]);
if (server_context->log_context.log_file == NULL)
krb5_err(context, 1, errno, "strdup");
}
if (opt->reverse_flag) {
iter_opts_1st = kadm_backward | kadm_unconfirmed;
iter_opts_2nd = kadm_backward | kadm_confirmed;
desc_1st = "unconfirmed ";
} else {
iter_opts_1st = kadm_forward | kadm_confirmed;
iter_opts_2nd = kadm_forward | kadm_unconfirmed;
desc_2nd = "unconfirmed";
}
if (opt->no_lock_flag) {
ret = kadm5_log_init_sharedlock(server_context, LOCK_NB);
if (ret == EAGAIN || ret == EWOULDBLOCK) {
warnx("Not locking the iprop log");
ret = kadm5_log_init_nolock(server_context);
if (ret)
krb5_err(context, 1, ret, "kadm5_log_init_nolock");
}
} else {
warnx("If this command appears to block, try the --no-lock option");
ret = kadm5_log_init_sharedlock(server_context, 0);
if (ret)
krb5_err(context, 1, ret, "kadm5_log_init_sharedlock");
}
ret = kadm5_log_foreach(server_context, iter_opts_1st,
NULL, print_entry, desc_1st);
if (ret)
krb5_warn(context, ret, "kadm5_log_foreach");
ret = kadm5_log_foreach(server_context, iter_opts_2nd,
NULL, print_entry, desc_2nd);
if (ret)
krb5_warn(context, ret, "kadm5_log_foreach");
ret = kadm5_log_end (server_context);
if (ret)
krb5_warn(context, ret, "kadm5_log_end");
kadm5_destroy(server_context);
return 0;
}
int
iprop_truncate(struct truncate_options *opt, int argc, char **argv)
{
kadm5_server_context *server_context;
krb5_error_code ret;
server_context = get_kadmin_context(opt->config_file_string,
opt->realm_string);
if (argc > 0) {
free(server_context->log_context.log_file);
server_context->log_context.log_file = strdup(argv[0]);
if (server_context->log_context.log_file == NULL)
krb5_err(context, 1, errno, "strdup");
}
if (opt->keep_entries_integer < 0 &&
opt->max_bytes_integer < 0) {
opt->keep_entries_integer = 100;
opt->max_bytes_integer = 0;
}
if (opt->keep_entries_integer < 0)
opt->keep_entries_integer = 0;
if (opt->max_bytes_integer < 0)
opt->max_bytes_integer = 0;
if (opt->reset_flag) {
/* First recover unconfirmed records */
ret = kadm5_log_init(server_context);
if (ret == 0)
ret = kadm5_log_reinit(server_context, 0);
} else {
ret = kadm5_log_init(server_context);
if (ret)
krb5_err(context, 1, ret, "kadm5_log_init");
ret = kadm5_log_truncate(server_context, opt->keep_entries_integer,
opt->max_bytes_integer);
}
if (ret)
krb5_err(context, 1, ret, "kadm5_log_truncate");
kadm5_log_signal_master(server_context);
kadm5_destroy(server_context);
return 0;
}
int
last_version(struct last_version_options *opt, int argc, char **argv)
{
kadm5_server_context *server_context;
char *alt_argv[2] = { NULL, NULL };
krb5_error_code ret;
uint32_t version;
size_t i;
server_context = get_kadmin_context(opt->config_file_string,
opt->realm_string);
if (argc == 0) {
alt_argv[0] = strdup(server_context->log_context.log_file);
if (alt_argv[0] == NULL)
krb5_err(context, 1, errno, "strdup");
argv = alt_argv;
argc = 1;
}
for (i = 0; i < argc; i++) {
free(server_context->log_context.log_file);
server_context->log_context.log_file = strdup(argv[i]);
if (server_context->log_context.log_file == NULL)
krb5_err(context, 1, errno, "strdup");
if (opt->no_lock_flag) {
ret = kadm5_log_init_sharedlock(server_context, LOCK_NB);
if (ret == EAGAIN || ret == EWOULDBLOCK) {
warnx("Not locking the iprop log");
ret = kadm5_log_init_nolock(server_context);
if (ret)
krb5_err(context, 1, ret, "kadm5_log_init_nolock");
}
} else {
warnx("If this command appears to block, try the "
"--no-lock option");
ret = kadm5_log_init_sharedlock(server_context, 0);
if (ret)
krb5_err(context, 1, ret, "kadm5_log_init_sharedlock");
}
ret = kadm5_log_get_version (server_context, &version);
if (ret)
krb5_err (context, 1, ret, "kadm5_log_get_version");
ret = kadm5_log_end (server_context);
if (ret)
krb5_warn(context, ret, "kadm5_log_end");
printf("version: %lu\n", (unsigned long)version);
}
kadm5_destroy(server_context);
free(alt_argv[0]);
return 0;
}
int
signal_master(struct signal_options *opt, int argc, char **argv)
{
kadm5_server_context *server_context;
server_context = get_kadmin_context(opt->config_file_string,
opt->realm_string);
kadm5_log_signal_master(server_context);
kadm5_destroy(server_context);
return 0;
}
/*
* Replay log
*/
int start_version = -1;
int end_version = -1;
static kadm5_ret_t
apply_entry(kadm5_server_context *server_context,
uint32_t ver,
time_t timestamp,
enum kadm_ops op,
uint32_t len,
krb5_storage *sp,
void *ctx)
{
struct replay_options *opt = ctx;
krb5_error_code ret;
if((opt->start_version_integer != -1 && ver < (uint32_t)opt->start_version_integer) ||
(opt->end_version_integer != -1 && ver > (uint32_t)opt->end_version_integer)) {
/* XXX skip this entry */
return 0;
}
printf ("ver %u... ", ver);
fflush (stdout);
ret = kadm5_log_replay(server_context, op, ver, len, sp);
if (ret)
krb5_warn (server_context->context, ret, "kadm5_log_replay");
printf ("done\n");
return 0;
}
int
iprop_replay(struct replay_options *opt, int argc, char **argv)
{
kadm5_server_context *server_context;
krb5_error_code ret;
server_context = get_kadmin_context(opt->config_file_string,
opt->realm_string);
if (argc > 0) {
free(server_context->log_context.log_file);
server_context->log_context.log_file = strdup(argv[0]);
if (server_context->log_context.log_file == NULL)
krb5_err(context, 1, errno, "strdup");
}
ret = server_context->db->hdb_open(context,
server_context->db,
O_RDWR | O_CREAT, 0600);
if (ret)
krb5_err (context, 1, ret, "db->open");
ret = kadm5_log_init (server_context);
if (ret)
krb5_err (context, 1, ret, "kadm5_log_init");
ret = kadm5_log_foreach(server_context,
kadm_forward | kadm_confirmed | kadm_unconfirmed,
NULL, apply_entry, opt);
if(ret)
krb5_warn(context, ret, "kadm5_log_foreach");
ret = kadm5_log_end (server_context);
if (ret)
krb5_warn(context, ret, "kadm5_log_end");
ret = server_context->db->hdb_close (context, server_context->db);
if (ret)
krb5_err (context, 1, ret, "db->close");
kadm5_destroy(server_context);
return 0;
}
static int help_flag;
static int version_flag;
static struct getargs args[] = {
{ "version", 0, arg_flag, &version_flag,
NULL, NULL
},
{ "help", 'h', arg_flag, &help_flag,
NULL, NULL
}
};
static int num_args = sizeof(args) / sizeof(args[0]);
int
help(void *opt, int argc, char **argv)
{
if(argc == 0) {
sl_help(commands, 1, argv - 1 /* XXX */);
} else {
SL_cmd *c = sl_match (commands, argv[0], 0);
if(c == NULL) {
fprintf (stderr, "No such command: %s. "
"Try \"help\" for a list of commands\n",
argv[0]);
} else {
if(c->func) {
static char shelp[] = "--help";
char *fake[3];
fake[0] = argv[0];
fake[1] = shelp;
fake[2] = NULL;
(*c->func)(2, fake);
fprintf(stderr, "\n");
}
if(c->help && *c->help)
fprintf (stderr, "%s\n", c->help);
if((++c)->name && c->func == NULL) {
int f = 0;
fprintf (stderr, "Synonyms:");
while (c->name && c->func == NULL) {
fprintf (stderr, "%s%s", f ? ", " : " ", (c++)->name);
f = 1;
}
fprintf (stderr, "\n");
}
}
}
return 0;
}
static void
usage(int status)
{
arg_printusage(args, num_args, NULL, "command");
exit(status);
}
int
main(int argc, char **argv)
{
int optidx = 0;
krb5_error_code ret;
setprogname(argv[0]);
if(getarg(args, num_args, argc, argv, &optidx))
usage(1);
if(help_flag)
usage(0);
if(version_flag) {
print_version(NULL);
exit(0);
}
argc -= optidx;
argv += optidx;
if(argc == 0)
usage(1);
ret = krb5_init_context(&context);
if (ret)
errx(1, "krb5_init_context failed with: %d\n", ret);
ret = sl_command(commands, argc, argv);
if(ret == -1)
warnx ("unrecognized command: %s", argv[0]);
return ret;
}
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