static void kim_ui_plugin_context_free (kim_ui_plugin_context *io_context)
{
if (io_context && *io_context) {
if ((*io_context)->ftables) {
krb5int_free_plugin_dir_data ((*io_context)->ftables);
}
if (PLUGIN_DIR_OPEN (&(*io_context)->plugins)) {
krb5int_close_plugin_dirs (&(*io_context)->plugins);
}
if ((*io_context)->kcontext) {
krb5_free_context ((*io_context)->kcontext);
}
free (*io_context);
*io_context = NULL;
}
}
static krb5_error_code
kdb_free_library(db_library lib)
{
krb5_error_code status = 0;
int locked = 0;
if ((status = kdb_lock_list()) != 0) {
goto clean_n_exit;
}
locked = 1;
lib->reference_cnt--;
if (lib->reference_cnt == 0) {
status = lib->vftabl.fini_library();
if (status) {
goto clean_n_exit;
}
/* close the library */
if (PLUGIN_DIR_OPEN((&lib->dl_dir_handle))) {
krb5int_close_plugin_dirs (&lib->dl_dir_handle);
}
kdb_destroy_lib_lock(lib);
if (lib->prev == NULL) {
/* first element in the list */
lib_list = lib->next;
} else {
lib->prev->next = lib->next;
}
if (lib->next) {
lib->next->prev = lib->prev;
}
free(lib);
}
clean_n_exit:
if (locked) {
kdb_unlock_list();
}
return status;
}
static krb5_error_code
module_locate_server (krb5_context ctx, const krb5_data *realm,
struct addrlist *addrlist,
enum locate_service_type svc, int socktype, int family)
{
struct krb5plugin_service_locate_result *res = NULL;
krb5_error_code code;
struct krb5plugin_service_locate_ftable *vtbl = NULL;
void **ptrs;
int i;
struct module_callback_data cbdata = { 0, };
Tprintf("in module_locate_server\n");
cbdata.lp = addrlist;
if (!PLUGIN_DIR_OPEN (&ctx->libkrb5_plugins)) {
code = krb5int_open_plugin_dirs (objdirs, NULL, &ctx->libkrb5_plugins,
&ctx->err);
if (code)
return KRB5_PLUGIN_NO_HANDLE;
}
code = krb5int_get_plugin_dir_data (&ctx->libkrb5_plugins,
"service_locator", &ptrs, &ctx->err);
if (code) {
Tprintf("error looking up plugin symbols: %s\n",
krb5_get_error_message(ctx, code));
return KRB5_PLUGIN_NO_HANDLE;
}
for (i = 0; ptrs[i]; i++) {
void *blob;
vtbl = ptrs[i];
Tprintf("element %d is %p\n", i, ptrs[i]);
/* For now, don't keep the plugin data alive. For long-lived
contexts, it may be desirable to change that later. */
code = vtbl->init(ctx, &blob);
if (code)
continue;
code = vtbl->lookup(blob, svc, realm->data, socktype, family,
module_callback, &cbdata);
vtbl->fini(blob);
if (code == KRB5_PLUGIN_NO_HANDLE) {
/* Module passes, keep going. */
/* XXX */
Tprintf("plugin doesn't handle this realm (KRB5_PLUGIN_NO_HANDLE)\n");
continue;
}
if (code != 0) {
/* Module encountered an actual error. */
Tprintf("plugin lookup routine returned error %d: %s\n",
code, error_message(code));
krb5int_free_plugin_dir_data (ptrs);
return code;
}
break;
}
if (ptrs[i] == NULL) {
Tprintf("ran off end of plugin list\n");
krb5int_free_plugin_dir_data (ptrs);
return KRB5_PLUGIN_NO_HANDLE;
}
Tprintf("stopped with plugin #%d, res=%p\n", i, res);
/* Got something back, yippee. */
Tprintf("now have %d addrs in list %p\n", addrlist->naddrs, addrlist);
print_addrlist(addrlist);
krb5int_free_plugin_dir_data (ptrs);
return 0;
}
static krb5_error_code
kdb_load_library(krb5_context kcontext, char *lib_name, db_library * lib)
{
krb5_error_code status = 0;
int ndx;
void **vftabl_addrs = NULL;
/* N.B.: If this is "const" but not "static", the Solaris 10
native compiler has trouble building the library because of
absolute relocations needed in read-only section ".rodata".
When it's static, it goes into ".picdata", which is
read-write. */
static const char *const dbpath_names[] = {
KDB_MODULE_SECTION, "db_module_dir", NULL,
};
const char *filebases[2];
char **profpath = NULL;
char **path = NULL;
filebases[0] = lib_name;
filebases[1] = NULL;
if (!strcmp(DB2_NAME, lib_name) && (kdb_db2_pol_err_loaded == 0)) {
initialize_adb_error_table();
kdb_db2_pol_err_loaded = 1;
}
*lib = calloc((size_t) 1, sizeof(**lib));
if (*lib == NULL) {
status = ENOMEM;
goto clean_n_exit;
}
status = kdb_init_lib_lock(*lib);
if (status) {
goto clean_n_exit;
}
strcpy((*lib)->name, lib_name);
/* Fetch the list of directories specified in the config
file(s) first. */
status = profile_get_values(kcontext->profile, dbpath_names, &profpath);
if (status != 0 && status != PROF_NO_RELATION)
goto clean_n_exit;
ndx = 0;
if (profpath)
while (profpath[ndx] != NULL)
ndx++;
path = calloc(ndx + db_dl_n_locations, sizeof (char *));
if (path == NULL) {
status = errno;
goto clean_n_exit;
}
if (ndx)
memcpy(path, profpath, ndx * sizeof(profpath[0]));
memcpy(path + ndx, db_dl_location, db_dl_n_locations * sizeof(char *));
status = 0;
if ((status = krb5int_open_plugin_dirs ((const char **) path,
filebases,
&(*lib)->dl_dir_handle, &kcontext->err))) {
char *err_str = krb5_get_error_message(kcontext, status);
status = KRB5_KDB_DBTYPE_NOTFOUND;
krb5_set_error_message (kcontext, status,
"Unable to find requested database type: %s", err_str);
krb5_free_error_message (kcontext, err_str);
goto clean_n_exit;
}
if ((status = krb5int_get_plugin_dir_data (&(*lib)->dl_dir_handle, "kdb_function_table",
&vftabl_addrs, &kcontext->err))) {
char *err_str = krb5_get_error_message(kcontext, status);
status = KRB5_KDB_DBTYPE_INIT;
krb5_set_error_message (kcontext, status,
"plugin symbol 'kdb_function_table' lookup failed: %s", err_str);
krb5_free_error_message (kcontext, err_str);
goto clean_n_exit;
}
if (vftabl_addrs[0] == NULL) {
/* No plugins! */
status = KRB5_KDB_DBTYPE_NOTFOUND;
krb5_set_error_message (kcontext, status,
_("Unable to load requested database module '%s': plugin symbol 'kdb_function_table' not found"),
lib_name);
goto clean_n_exit;
}
memcpy(&(*lib)->vftabl, vftabl_addrs[0], sizeof(kdb_vftabl));
kdb_setup_opt_functions(*lib);
if ((status = (*lib)->vftabl.init_library())) {
/* ERROR. library not initialized cleanly */
goto clean_n_exit;
}
clean_n_exit:
if (vftabl_addrs != NULL) { krb5int_free_plugin_dir_data (vftabl_addrs); }
/* Both of these DTRT with NULL. */
profile_free_list(profpath);
free(path);
if (status) {
if (*lib) {
kdb_destroy_lib_lock(*lib);
if (PLUGIN_DIR_OPEN((&(*lib)->dl_dir_handle))) {
krb5int_close_plugin_dirs (&(*lib)->dl_dir_handle);
}
free(*lib);
*lib = NULL;
}
}
return status;
}
static krb5_error_code
module_locate_server(krb5_context ctx, const krb5_data *realm,
struct serverlist *serverlist,
enum locate_service_type svc, int socktype)
{
struct krb5plugin_service_locate_result *res = NULL;
krb5_error_code code;
struct krb5plugin_service_locate_ftable *vtbl = NULL;
void **ptrs;
char *realmz; /* NUL-terminated realm */
int i;
struct module_callback_data cbdata = { 0, };
const char *msg;
Tprintf("in module_locate_server\n");
cbdata.list = serverlist;
if (!PLUGIN_DIR_OPEN (&ctx->libkrb5_plugins)) {
code = krb5int_open_plugin_dirs (objdirs, NULL, &ctx->libkrb5_plugins,
&ctx->err);
if (code)
return KRB5_PLUGIN_NO_HANDLE;
}
code = krb5int_get_plugin_dir_data (&ctx->libkrb5_plugins,
"service_locator", &ptrs, &ctx->err);
if (code) {
Tprintf("error looking up plugin symbols: %s\n",
(msg = krb5_get_error_message(ctx, code)));
krb5_free_error_message(ctx, msg);
return KRB5_PLUGIN_NO_HANDLE;
}
if (realm->length >= UINT_MAX) {
krb5int_free_plugin_dir_data(ptrs);
return ENOMEM;
}
realmz = k5memdup0(realm->data, realm->length, &code);
if (realmz == NULL) {
krb5int_free_plugin_dir_data(ptrs);
return code;
}
for (i = 0; ptrs[i]; i++) {
void *blob;
vtbl = ptrs[i];
Tprintf("element %d is %p\n", i, ptrs[i]);
/* For now, don't keep the plugin data alive. For long-lived
contexts, it may be desirable to change that later. */
code = vtbl->init(ctx, &blob);
if (code)
continue;
code = vtbl->lookup(blob, svc, realmz,
(socktype != 0) ? socktype : SOCK_DGRAM, AF_UNSPEC,
module_callback, &cbdata);
/* Also ask for TCP addresses if we got UDP addresses and want both. */
if (code == 0 && socktype == 0) {
code = vtbl->lookup(blob, svc, realmz, SOCK_STREAM, AF_UNSPEC,
module_callback, &cbdata);
if (code == KRB5_PLUGIN_NO_HANDLE)
code = 0;
}
vtbl->fini(blob);
if (code == KRB5_PLUGIN_NO_HANDLE) {
/* Module passes, keep going. */
/* XXX */
Tprintf("plugin doesn't handle this realm (KRB5_PLUGIN_NO_HANDLE)\n");
continue;
}
if (code != 0) {
/* Module encountered an actual error. */
Tprintf("plugin lookup routine returned error %d: %s\n",
code, error_message(code));
free(realmz);
krb5int_free_plugin_dir_data (ptrs);
return code;
}
break;
}
if (ptrs[i] == NULL) {
Tprintf("ran off end of plugin list\n");
free(realmz);
krb5int_free_plugin_dir_data (ptrs);
return KRB5_PLUGIN_NO_HANDLE;
}
Tprintf("stopped with plugin #%d, res=%p\n", i, res);
/* Got something back, yippee. */
Tprintf("now have %lu addrs in list %p\n",
(unsigned long) serverlist->nservers, serverlist);
free(realmz);
krb5int_free_plugin_dir_data (ptrs);
return 0;
}
krb5_error_code KRB5_CALLCONV
krb5_authdata_context_init(krb5_context kcontext,
krb5_authdata_context *pcontext)
{
int n_modules, n_tables, i, k;
void **tables = NULL;
krb5plugin_authdata_client_ftable_v0 *table;
krb5_authdata_context context = NULL;
int internal_count = 0;
struct plugin_dir_handle plugins;
krb5_error_code code;
*pcontext = NULL;
memset(&plugins, 0, sizeof(plugins));
n_modules = 0;
for (n_tables = 0; authdata_systems[n_tables] != NULL; n_tables++) {
n_modules += k5_ad_module_count(authdata_systems[n_tables]);
}
internal_count = n_tables;
if (PLUGIN_DIR_OPEN(&plugins) == 0 &&
krb5int_open_plugin_dirs(objdirs, NULL,
&plugins,
&kcontext->err) == 0 &&
krb5int_get_plugin_dir_data(&plugins,
"authdata_client_0",
&tables,
&kcontext->err) == 0 &&
tables != NULL)
{
for (; tables[n_tables - internal_count] != NULL; n_tables++) {
table = tables[n_tables - internal_count];
n_modules += k5_ad_module_count(table);
}
}
context = calloc(1, sizeof(*context));
if (kcontext == NULL) {
code = ENOMEM;
goto cleanup;
}
context->magic = KV5M_AUTHDATA_CONTEXT;
context->modules = calloc(n_modules, sizeof(context->modules[0]));
if (context->modules == NULL) {
code = ENOMEM;
goto cleanup;
}
context->n_modules = n_modules;
/* fill in the structure */
for (i = 0, k = 0, code = 0; i < n_tables - internal_count; i++) {
code = k5_ad_init_modules(kcontext, context, tables[i], &k);
if (code != 0)
goto cleanup;
}
for (i = 0; i < internal_count; i++) {
code = k5_ad_init_modules(kcontext, context, authdata_systems[i], &k);
if (code != 0)
goto cleanup;
}
context->plugins = plugins;
cleanup:
if (tables != NULL)
krb5int_free_plugin_dir_data(tables);
if (code != 0) {
krb5int_close_plugin_dirs(&plugins);
krb5_authdata_context_free(kcontext, context);
} else {
/* plugins is owned by context now */
*pcontext = context;
}
return code;
}
krb5_error_code
load_authdata_plugins(krb5_context context)
{
struct errinfo err;
void **authdata_plugins_ftables = NULL;
struct krb5plugin_authdata_ftable_v0 *ftable = NULL;
int module_count, i, k;
init_proc server_init_proc = NULL;
memset(&err, 0, sizeof(err));
/* Attempt to load all of the authdata plugins we can find. */
PLUGIN_DIR_INIT(&authdata_plugins);
if (PLUGIN_DIR_OPEN(&authdata_plugins) == 0) {
if (krb5int_open_plugin_dirs(objdirs, NULL,
&authdata_plugins, &err) != 0) {
return KRB5_PLUGIN_NO_HANDLE;
}
}
/* Get the method tables provided by the loaded plugins. */
authdata_plugins_ftables = NULL;
n_authdata_systems = 0;
if (krb5int_get_plugin_dir_data(&authdata_plugins,
"authdata_server_0",
&authdata_plugins_ftables, &err) != 0) {
return KRB5_PLUGIN_NO_HANDLE;
}
/* Count the valid modules. */
module_count = sizeof(static_authdata_systems)
/ sizeof(static_authdata_systems[0]);
if (authdata_plugins_ftables != NULL) {
for (i = 0; authdata_plugins_ftables[i] != NULL; i++) {
ftable = authdata_plugins_ftables[i];
if ((ftable->authdata_proc != NULL)) {
module_count++;
}
}
}
/* Build the complete list of supported authdata options, and
* leave room for a terminator entry. */
authdata_systems = calloc((module_count + 1), sizeof(krb5_authdata_systems) );
if (authdata_systems == NULL) {
krb5int_free_plugin_dir_data(authdata_plugins_ftables);
return ENOMEM;
}
/* Add the locally-supplied mechanisms to the dynamic list first. */
for (i = 0, k = 0;
i < sizeof(static_authdata_systems) / sizeof(static_authdata_systems[0]);
i++) {
if (static_authdata_systems[i].type == -1)
break;
authdata_systems[k] = static_authdata_systems[i];
/* Try to initialize the authdata system. If it fails, we'll remove it
* from the list of systems we'll be using. */
server_init_proc = static_authdata_systems[i].init;
if ((server_init_proc != NULL) &&
((*server_init_proc)(context, NULL /* &plugin_context */) != 0)) {
memset(&authdata_systems[k], 0, sizeof(authdata_systems[k]));
continue;
}
k++;
}
/* Now add the dynamically-loaded mechanisms to the list. */
if (authdata_plugins_ftables != NULL) {
for (i = 0; authdata_plugins_ftables[i] != NULL; i++) {
ftable = authdata_plugins_ftables[i];
if ((ftable->authdata_proc == NULL)) {
continue;
}
server_init_proc = ftable->init_proc;
krb5_error_code initerr;
if ((server_init_proc != NULL) &&
((initerr = (*server_init_proc)(context, NULL /* &plugin_context */)) != 0)) {
const char *emsg;
emsg = krb5_get_error_message(context, initerr);
if (emsg) {
krb5_klog_syslog(LOG_ERR,
"authdata %s failed to initialize: %s",
ftable->name, emsg);
krb5_free_error_message(context, emsg);
}
memset(&authdata_systems[k], 0, sizeof(authdata_systems[k]));
continue;
}
authdata_systems[k].name = ftable->name;
authdata_systems[k].init = server_init_proc;
authdata_systems[k].fini = ftable->fini_proc;
authdata_systems[k].handle_authdata = ftable->authdata_proc;
k++;
}
}
n_authdata_systems = k;
/* Add the end-of-list marker. */
authdata_systems[k].name = "[end]";
authdata_systems[k].type = -1;
return 0;
}
/* Load both v0 and v2 authdata plugins */
krb5_error_code
load_authdata_plugins(krb5_context context)
{
void **authdata_plugins_ftables_v0 = NULL;
void **authdata_plugins_ftables_v2 = NULL;
size_t module_count;
size_t i, k;
init_proc server_init_proc = NULL;
krb5_error_code code;
/* Attempt to load all of the authdata plugins we can find. */
PLUGIN_DIR_INIT(&authdata_plugins);
if (PLUGIN_DIR_OPEN(&authdata_plugins) == 0) {
if (krb5int_open_plugin_dirs(objdirs, NULL,
&authdata_plugins, &context->err) != 0) {
return KRB5_PLUGIN_NO_HANDLE;
}
}
/* Get the method tables provided by the loaded plugins. */
authdata_plugins_ftables_v0 = NULL;
authdata_plugins_ftables_v2 = NULL;
n_authdata_systems = 0;
if (krb5int_get_plugin_dir_data(&authdata_plugins,
"authdata_server_2",
&authdata_plugins_ftables_v2,
&context->err) != 0 ||
krb5int_get_plugin_dir_data(&authdata_plugins,
"authdata_server_0",
&authdata_plugins_ftables_v0,
&context->err) != 0) {
code = KRB5_PLUGIN_NO_HANDLE;
goto cleanup;
}
/* Count the valid modules. */
module_count = 0;
if (authdata_plugins_ftables_v2 != NULL) {
struct krb5plugin_authdata_server_ftable_v2 *ftable;
for (i = 0; authdata_plugins_ftables_v2[i] != NULL; i++) {
ftable = authdata_plugins_ftables_v2[i];
if (ftable->authdata_proc != NULL)
module_count++;
}
}
if (authdata_plugins_ftables_v0 != NULL) {
struct krb5plugin_authdata_server_ftable_v0 *ftable;
for (i = 0; authdata_plugins_ftables_v0[i] != NULL; i++) {
ftable = authdata_plugins_ftables_v0[i];
if (ftable->authdata_proc != NULL)
module_count++;
}
}
module_count += sizeof(static_authdata_systems)
/ sizeof(static_authdata_systems[0]);
/* Build the complete list of supported authdata options, and
* leave room for a terminator entry.
*/
authdata_systems = calloc(module_count + 1, sizeof(krb5_authdata_systems));
if (authdata_systems == NULL) {
code = ENOMEM;
goto cleanup;
}
k = 0;
/*
* Special case to ensure that handle_request_authdata is
* first in the list, to make unenc_authdata available to
* plugins.
*/
for (i = 0; i < (sizeof(static_authdata_systems) /
sizeof(static_authdata_systems[0])); i++) {
if ((static_authdata_systems[i].flags & AUTHDATA_FLAG_PRE_PLUGIN) == 0)
continue;
assert(static_authdata_systems[i].init == NULL);
authdata_systems[k++] = static_authdata_systems[i];
}
/* Add dynamically loaded V2 plugins */
if (authdata_plugins_ftables_v2 != NULL) {
struct krb5plugin_authdata_server_ftable_v2 *ftable;
for (i = 0; authdata_plugins_ftables_v2[i] != NULL; i++) {
krb5_error_code initerr;
void *pctx = NULL;
ftable = authdata_plugins_ftables_v2[i];
if (ftable->authdata_proc == NULL) {
continue;
}
server_init_proc = ftable->init_proc;
if ((server_init_proc != NULL) &&
((initerr = (*server_init_proc)(context, &pctx)) != 0)) {
const char *emsg;
emsg = krb5_get_error_message(context, initerr);
krb5_klog_syslog(LOG_ERR,
_("authdata %s failed to initialize: %s"),
ftable->name, emsg);
krb5_free_error_message(context, emsg);
memset(&authdata_systems[k], 0, sizeof(authdata_systems[k]));
continue;
}
authdata_systems[k].name = ftable->name;
authdata_systems[k].type = AUTHDATA_SYSTEM_V2;
authdata_systems[k].init = server_init_proc;
authdata_systems[k].fini = ftable->fini_proc;
authdata_systems[k].handle_authdata.v2 = ftable->authdata_proc;
authdata_systems[k].plugin_context = pctx;
k++;
}
}
/* Add dynamically loaded V0 plugins */
if (authdata_plugins_ftables_v0 != NULL) {
struct krb5plugin_authdata_server_ftable_v0 *ftable;
for (i = 0; authdata_plugins_ftables_v0[i] != NULL; i++) {
krb5_error_code initerr;
void *pctx = NULL;
ftable = authdata_plugins_ftables_v0[i];
if (ftable->authdata_proc == NULL) {
continue;
}
server_init_proc = ftable->init_proc;
if ((server_init_proc != NULL) &&
((initerr = (*server_init_proc)(context, &pctx)) != 0)) {
const char *emsg;
emsg = krb5_get_error_message(context, initerr);
krb5_klog_syslog(LOG_ERR,
_("authdata %s failed to initialize: %s"),
ftable->name, emsg);
krb5_free_error_message(context, emsg);
memset(&authdata_systems[k], 0, sizeof(authdata_systems[k]));
continue;
}
authdata_systems[k].name = ftable->name;
authdata_systems[k].type = AUTHDATA_SYSTEM_V0;
authdata_systems[k].init = server_init_proc;
authdata_systems[k].fini = ftable->fini_proc;
authdata_systems[k].handle_authdata.v0 = ftable->authdata_proc;
authdata_systems[k].plugin_context = pctx;
k++;
}
}
for (i = 0;
i < sizeof(static_authdata_systems) / sizeof(static_authdata_systems[0]);
i++) {
if (static_authdata_systems[i].flags & AUTHDATA_FLAG_PRE_PLUGIN)
continue;
assert(static_authdata_systems[i].init == NULL);
authdata_systems[k++] = static_authdata_systems[i];
}
n_authdata_systems = k;
/* Add the end-of-list marker. */
authdata_systems[k].name = "[end]";
authdata_systems[k].type = AUTHDATA_SYSTEM_UNKNOWN;
code = 0;
cleanup:
if (authdata_plugins_ftables_v2 != NULL)
krb5int_free_plugin_dir_data(authdata_plugins_ftables_v2);
if (authdata_plugins_ftables_v0 != NULL)
krb5int_free_plugin_dir_data(authdata_plugins_ftables_v0);
return code;
}