/* * Copyright (c) 2005, PADL Software Pty Ltd. * All rights reserved. * * Portions Copyright (c) 2009 Apple Inc. 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "krb5_locl.h" #ifdef HAVE_KCM /* * Client library for Kerberos Credentials Manager (KCM) daemon */ #include "kcm.h" #include static krb5_error_code kcm_set_kdc_offset(krb5_context, krb5_ccache, krb5_deltat); static const char *kcm_ipc_name = "ANY:org.h5l.kcm"; typedef struct krb5_kcmcache { char *name; } krb5_kcmcache; typedef struct krb5_kcm_cursor { unsigned long offset; unsigned long length; kcmuuid_t *uuids; } *krb5_kcm_cursor; #define KCMCACHE(X) ((krb5_kcmcache *)(X)->data.data) #define CACHENAME(X) (KCMCACHE(X)->name) #define KCMCURSOR(C) ((krb5_kcm_cursor)(C)) static HEIMDAL_MUTEX kcm_mutex = HEIMDAL_MUTEX_INITIALIZER; static heim_ipc kcm_ipc = NULL; static krb5_error_code kcm_send_request(krb5_context context, krb5_storage *request, krb5_data *response_data) { krb5_error_code ret = 0; krb5_data request_data; krb5_data_zero(response_data); HEIMDAL_MUTEX_lock(&kcm_mutex); if (kcm_ipc == NULL) ret = heim_ipc_init_context(kcm_ipc_name, &kcm_ipc); HEIMDAL_MUTEX_unlock(&kcm_mutex); if (ret) return KRB5_CC_NOSUPP; ret = krb5_storage_to_data(request, &request_data); if (ret) { return krb5_enomem(context); } ret = heim_ipc_call(kcm_ipc, &request_data, response_data, NULL); krb5_data_free(&request_data); return ret; } KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL krb5_kcm_storage_request(krb5_context context, uint16_t opcode, krb5_storage **storage_p) { krb5_storage *sp; krb5_error_code ret; *storage_p = NULL; sp = krb5_storage_emem(); if (sp == NULL) return krb5_enomem(context); /* Send MAJOR | VERSION | OPCODE */ ret = krb5_store_int8(sp, KCM_PROTOCOL_VERSION_MAJOR); if (ret) goto fail; ret = krb5_store_int8(sp, KCM_PROTOCOL_VERSION_MINOR); if (ret) goto fail; ret = krb5_store_int16(sp, opcode); if (ret) goto fail; *storage_p = sp; fail: if (ret) { krb5_set_error_message(context, ret, N_("Failed to encode KCM request", "")); krb5_storage_free(sp); } return ret; } /* * A sort of a state() for caches -- we use this to see if the local default * cache name for KCM happens to exist. See kcm_alloc() below. */ static krb5_error_code kcm_stat(krb5_context context, const char *name) { krb5_error_code ret; krb5_storage *request = NULL; krb5_data response_data; krb5_data_zero(&response_data); ret = krb5_kcm_storage_request(context, KCM_OP_GET_PRINCIPAL, &request); if (ret == 0) ret = krb5_store_stringz(request, name); if (ret == 0) ret = krb5_kcm_call(context, request, NULL, &response_data); krb5_storage_free(request); krb5_data_free(&response_data); return ret; } static krb5_error_code kcm_get_default_name(krb5_context, const krb5_cc_ops *, const char *, char **); static krb5_error_code kcm_alloc(krb5_context context, const krb5_cc_ops *ops, const char *residual, const char *sub, krb5_ccache *id) { krb5_error_code ret; krb5_kcmcache *k; size_t ops_prefix_len = strlen(ops->prefix); size_t plen = 0; size_t local_def_name_len; char *local_def_name = NULL; /* Our idea of default KCM cache name */ char *kcm_def_name = NULL; /* KCM's knowledge of default cache name */ int aret; /* Get the KCM:%{UID} default */ if (ops == &krb5_kcm_ops) ret = _krb5_expand_default_cc_name(context, KRB5_DEFAULT_CCNAME_KCM_KCM, &local_def_name); else ret = _krb5_expand_default_cc_name(context, KRB5_DEFAULT_CCNAME_KCM_API, &local_def_name); if (ret) return ret; local_def_name_len = strlen(local_def_name); /* Get the default ccache name from KCM if possible */ (void) kcm_get_default_name(context, ops, NULL, &kcm_def_name); /* * We have a sticky situation in that applications that call * krb5_cc_default() will be getting the locally configured or compiled-in * default KCM cache name, which may not exist in the user's KCM session, * and which the KCM daemon may not be able to alias to the actual default * for the user's session. * * To deal with this we heuristically detect when an application uses the * default KCM ccache name. * * If the residual happens to be the local default KCM name we may end up * using whatever the default KCM cache name is instead of the local * default. * * Note that here `residual' may be any of: * * - %{UID} * - %{UID}: * - %{UID}: * - * - * - * * Only the first two count as "maybe I mean the default KCM cache". */ if (residual && !sub && strncmp(residual, local_def_name + ops_prefix_len + 1, local_def_name_len - (ops_prefix_len + 1)) == 0) { if (residual[local_def_name_len - (ops_prefix_len + 1)] == '\0' || (residual[local_def_name_len - (ops_prefix_len + 1)] == ':' && residual[local_def_name_len - ops_prefix_len] == '\0')) { /* * If we got a default cache name from KCM and the requested default * cache does not exist, use the former. */ if (kcm_def_name && kcm_stat(context, residual)) residual = kcm_def_name + ops_prefix_len + 1; } } if (residual && residual[0] == '\0') residual = NULL; if (sub && sub[0] == '\0') sub = NULL; if (residual == NULL && sub == NULL) { /* Use the default cache name, either from KCM or local default */ if (kcm_def_name) residual = kcm_def_name + ops_prefix_len + 1; else residual = local_def_name + ops_prefix_len + 1; } if (residual) { /* KCM cache names must start with {UID} or {UID}: */ if (residual[0] != '0') plen = strspn(residual, "0123456789"); if (plen && residual[plen] != ':' && residual[plen] != '\0') plen = 0; /* * If `plen', then residual is such a residual, else we'll want to * prefix the {UID}:. */ } k = calloc(1, sizeof(*k)); if (k == NULL) { free(local_def_name); free(kcm_def_name); return krb5_enomem(context); } k->name = NULL; if (residual == NULL && sub == NULL) { /* One more way to get a default */ aret = asprintf(&k->name, "%llu", (unsigned long long)getuid()); } else if (residual == NULL) { /* * Treat the subsidiary as the residual (maybe this will turn out to be * wrong). */ aret = asprintf(&k->name, "%llu:%s", (unsigned long long)getuid(), sub); } else if (plen) { /* The residual is a UID */ aret = asprintf(&k->name, "%s%s%s", residual, sub ? ":" : "", sub ? sub : ""); } else if (sub == NULL) { /* The residual is NOT a UID */ aret = asprintf(&k->name, "%llu:%s", (unsigned long long)getuid(), residual); } else { /* Ditto, plus we have a subsidiary. `residual && sub && !plen' */ aret = asprintf(&k->name, "%llu:%s:%s", (unsigned long long)getuid(), residual, sub); } if (aret == -1 || k->name == NULL) { free(local_def_name); free(kcm_def_name); free(k); return krb5_enomem(context); } free(local_def_name); free(kcm_def_name); (*id)->data.data = k; (*id)->data.length = sizeof(*k); return 0; } KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL krb5_kcm_call(krb5_context context, krb5_storage *request, krb5_storage **response_p, krb5_data *response_data_p) { krb5_data response_data; krb5_error_code ret; int32_t status; krb5_storage *response; if (response_p != NULL) *response_p = NULL; krb5_data_zero(&response_data); ret = kcm_send_request(context, request, &response_data); if (ret) { krb5_data_free(&response_data); return ret; } response = krb5_storage_from_data(&response_data); if (response == NULL) { krb5_data_free(&response_data); return KRB5_CC_IO; } ret = krb5_ret_int32(response, &status); if (ret) { krb5_storage_free(response); krb5_data_free(&response_data); return KRB5_CC_FORMAT; } if (status) { krb5_storage_free(response); krb5_data_free(&response_data); return status; } if (response_p != NULL) { *response_data_p = response_data; *response_p = response; return 0; } krb5_storage_free(response); krb5_data_free(&response_data); return 0; } static void kcm_free(krb5_context context, krb5_ccache *id) { krb5_kcmcache *k = KCMCACHE(*id); if (k != NULL) { free(k->name); memset_s(k, sizeof(*k), 0, sizeof(*k)); krb5_data_free(&(*id)->data); } } static krb5_error_code KRB5_CALLCONV kcm_get_name_2(krb5_context context, krb5_ccache id, const char **name, const char **col, const char **sub) { /* * TODO: * * - name should be : * - col should be * - sub should be */ if (name) *name = CACHENAME(id); if (col) *col = NULL; if (sub) *sub = CACHENAME(id); return 0; } static krb5_error_code kcm_resolve_2_kcm(krb5_context context, krb5_ccache *id, const char *res, const char *sub) { /* * For now, for KCM the `res' is the `sub'. * * TODO: We should use `res' as the IPC name instead of the one currently * hard-coded in `kcm_ipc_name'. */ return kcm_alloc(context, &krb5_kcm_ops, res, sub, id); } static krb5_error_code kcm_resolve_2_api(krb5_context context, krb5_ccache *id, const char *res, const char *sub) { /* * For now, for KCM the `res' is the `sub'. * * TODO: We should use `res' as the IPC name instead of the one currently * hard-coded in `kcm_ipc_name'. */ return kcm_alloc(context, &krb5_akcm_ops, res, sub, id); } /* * Request: * * Response: * NameZ */ static krb5_error_code kcm_gen_new(krb5_context context, const krb5_cc_ops *ops, krb5_ccache *id) { krb5_kcmcache *k; krb5_error_code ret; krb5_storage *request, *response; krb5_data response_data; ret = kcm_alloc(context, ops, NULL, NULL, id); if (ret) return ret; k = KCMCACHE(*id); ret = krb5_kcm_storage_request(context, KCM_OP_GEN_NEW, &request); if (ret) { kcm_free(context, id); return ret; } ret = krb5_kcm_call(context, request, &response, &response_data); if (ret) { krb5_storage_free(request); kcm_free(context, id); return ret; } free(k->name); k->name = NULL; ret = krb5_ret_stringz(response, &k->name); if (ret) ret = KRB5_CC_IO; krb5_storage_free(request); krb5_storage_free(response); krb5_data_free(&response_data); if (ret) kcm_free(context, id); return ret; } static krb5_error_code kcm_gen_new_kcm(krb5_context context, krb5_ccache *id) { return kcm_gen_new(context, &krb5_kcm_ops, id); } static krb5_error_code kcm_gen_new_api(krb5_context context, krb5_ccache *id) { return kcm_gen_new(context, &krb5_akcm_ops, id); } /* * Request: * NameZ * Principal * * Response: * */ static krb5_error_code kcm_initialize(krb5_context context, krb5_ccache id, krb5_principal primary_principal) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_INITIALIZE, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_principal(request, primary_principal); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); if (context->kdc_sec_offset) kcm_set_kdc_offset(context, id, context->kdc_sec_offset); return ret; } static krb5_error_code kcm_close(krb5_context context, krb5_ccache id) { kcm_free(context, &id); return 0; } /* * Request: * NameZ * * Response: * */ static krb5_error_code kcm_destroy(krb5_context context, krb5_ccache id) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_DESTROY, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } /* * Request: * NameZ * Creds * * Response: * */ static krb5_error_code kcm_store_cred(krb5_context context, krb5_ccache id, krb5_creds *creds) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_STORE, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_creds(request, creds); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } #if 0 /* * Request: * NameZ * WhichFields * MatchCreds * * Response: * Creds * */ static krb5_error_code kcm_retrieve(krb5_context context, krb5_ccache id, krb5_flags which, const krb5_creds *mcred, krb5_creds *creds) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request, *response; krb5_data response_data; ret = krb5_kcm_storage_request(context, KCM_OP_RETRIEVE, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_int32(request, which); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_creds_tag(request, rk_UNCONST(mcred)); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, &response, &response_data); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_ret_creds(response, creds); if (ret) ret = KRB5_CC_IO; krb5_storage_free(request); krb5_storage_free(response); krb5_data_free(&response_data); return ret; } #endif /* * Request: * NameZ * * Response: * Principal */ static krb5_error_code kcm_get_principal(krb5_context context, krb5_ccache id, krb5_principal *principal) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request, *response; krb5_data response_data; ret = krb5_kcm_storage_request(context, KCM_OP_GET_PRINCIPAL, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, &response, &response_data); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_ret_principal(response, principal); if (ret) ret = KRB5_CC_IO; krb5_storage_free(request); krb5_storage_free(response); krb5_data_free(&response_data); return ret; } /* * Request: * NameZ * * Response: * Cursor * */ static krb5_error_code kcm_get_first (krb5_context context, krb5_ccache id, krb5_cc_cursor *cursor) { krb5_error_code ret; krb5_kcm_cursor c; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request, *response; krb5_data response_data; ret = krb5_kcm_storage_request(context, KCM_OP_GET_CRED_UUID_LIST, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, &response, &response_data); krb5_storage_free(request); if (ret) return ret; c = calloc(1, sizeof(*c)); if (c == NULL) { ret = krb5_enomem(context); return ret; } while (1) { ssize_t sret; kcmuuid_t uuid; void *ptr; sret = krb5_storage_read(response, &uuid, sizeof(uuid)); if (sret == 0) { ret = 0; break; } else if (sret != sizeof(uuid)) { ret = EINVAL; break; } ptr = realloc(c->uuids, sizeof(c->uuids[0]) * (c->length + 1)); if (ptr == NULL) { free(c->uuids); free(c); return krb5_enomem(context); } c->uuids = ptr; memcpy(&c->uuids[c->length], &uuid, sizeof(uuid)); c->length += 1; } krb5_storage_free(response); krb5_data_free(&response_data); if (ret) { free(c->uuids); free(c); return ret; } *cursor = c; return 0; } /* * Request: * NameZ * Cursor * * Response: * Creds */ static krb5_error_code kcm_get_next (krb5_context context, krb5_ccache id, krb5_cc_cursor *cursor, krb5_creds *creds) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_kcm_cursor c = KCMCURSOR(*cursor); krb5_storage *request, *response; krb5_data response_data; ssize_t sret; again: if (c->offset >= c->length) return KRB5_CC_END; ret = krb5_kcm_storage_request(context, KCM_OP_GET_CRED_BY_UUID, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } sret = krb5_storage_write(request, &c->uuids[c->offset], sizeof(c->uuids[c->offset])); c->offset++; if (sret != sizeof(c->uuids[c->offset])) { krb5_storage_free(request); return krb5_enomem(context); } ret = krb5_kcm_call(context, request, &response, &response_data); krb5_storage_free(request); if (ret == KRB5_CC_END) { goto again; } else if (ret) return ret; ret = krb5_ret_creds(response, creds); if (ret) ret = KRB5_CC_IO; krb5_storage_free(response); krb5_data_free(&response_data); return ret; } /* * Request: * NameZ * Cursor * * Response: * */ static krb5_error_code kcm_end_get (krb5_context context, krb5_ccache id, krb5_cc_cursor *cursor) { krb5_kcm_cursor c = KCMCURSOR(*cursor); free(c->uuids); free(c); *cursor = NULL; return 0; } /* * Request: * NameZ * WhichFields * MatchCreds * * Response: * */ static krb5_error_code kcm_remove_cred(krb5_context context, krb5_ccache id, krb5_flags which, krb5_creds *cred) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_REMOVE_CRED, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_int32(request, which); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_creds_tag(request, cred); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } static krb5_error_code kcm_set_flags(krb5_context context, krb5_ccache id, krb5_flags flags) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_SET_FLAGS, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_int32(request, flags); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } static int kcm_get_version(krb5_context context, krb5_ccache id) { return 0; } /* * Send nothing * get back list of uuids */ static krb5_error_code kcm_get_cache_first(krb5_context context, krb5_cc_cursor *cursor) { krb5_error_code ret; krb5_kcm_cursor c; krb5_storage *request, *response; krb5_data response_data; *cursor = NULL; c = calloc(1, sizeof(*c)); if (c == NULL) { ret = krb5_enomem(context); goto out; } ret = krb5_kcm_storage_request(context, KCM_OP_GET_CACHE_UUID_LIST, &request); if (ret) goto out; ret = krb5_kcm_call(context, request, &response, &response_data); krb5_storage_free(request); if (ret) goto out; while (1) { ssize_t sret; kcmuuid_t uuid; void *ptr; sret = krb5_storage_read(response, &uuid, sizeof(uuid)); if (sret == 0) { ret = 0; break; } else if (sret != sizeof(uuid)) { ret = EINVAL; goto out; } ptr = realloc(c->uuids, sizeof(c->uuids[0]) * (c->length + 1)); if (ptr == NULL) { ret = krb5_enomem(context); goto out; } c->uuids = ptr; memcpy(&c->uuids[c->length], &uuid, sizeof(uuid)); c->length += 1; } krb5_storage_free(response); krb5_data_free(&response_data); out: if (ret && c) { free(c->uuids); free(c); } else *cursor = c; return ret; } /* * Send uuid * Recv cache name */ static krb5_error_code kcm_get_cache_next(krb5_context context, krb5_cc_cursor cursor, const krb5_cc_ops *ops, krb5_ccache *id) { krb5_error_code ret; krb5_kcm_cursor c = KCMCURSOR(cursor); krb5_storage *request, *response; krb5_data response_data; ssize_t sret; char *name; *id = NULL; again: if (c->offset >= c->length) return KRB5_CC_END; ret = krb5_kcm_storage_request(context, KCM_OP_GET_CACHE_BY_UUID, &request); if (ret) return ret; sret = krb5_storage_write(request, &c->uuids[c->offset], sizeof(c->uuids[c->offset])); c->offset++; if (sret != sizeof(c->uuids[c->offset])) { krb5_storage_free(request); return krb5_enomem(context); } ret = krb5_kcm_call(context, request, &response, &response_data); krb5_storage_free(request); if (ret == KRB5_CC_END) goto again; else if (ret) return ret; ret = krb5_ret_stringz(response, &name); krb5_storage_free(response); krb5_data_free(&response_data); if (ret == 0) { ret = _krb5_cc_allocate(context, ops, id); if (ret == 0) ret = kcm_alloc(context, ops, name, NULL, id); krb5_xfree(name); } return ret; } static krb5_error_code kcm_get_cache_next_kcm(krb5_context context, krb5_cc_cursor cursor, krb5_ccache *id) { #ifndef KCM_IS_API_CACHE return kcm_get_cache_next(context, cursor, &krb5_kcm_ops, id); #else return KRB5_CC_END; #endif } static krb5_error_code kcm_get_cache_next_api(krb5_context context, krb5_cc_cursor cursor, krb5_ccache *id) { return kcm_get_cache_next(context, cursor, &krb5_akcm_ops, id); } static krb5_error_code kcm_end_cache_get(krb5_context context, krb5_cc_cursor cursor) { krb5_kcm_cursor c = KCMCURSOR(cursor); free(c->uuids); free(c); return 0; } static krb5_error_code kcm_move(krb5_context context, krb5_ccache from, krb5_ccache to) { krb5_error_code ret; krb5_kcmcache *oldk = KCMCACHE(from); krb5_kcmcache *newk = KCMCACHE(to); krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_MOVE_CACHE, &request); if (ret) return ret; ret = krb5_store_stringz(request, oldk->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_stringz(request, newk->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); if (ret == 0) krb5_cc_destroy(context, from); return ret; } static krb5_error_code kcm_get_default_name(krb5_context context, const krb5_cc_ops *ops, const char *defstr, char **str) { krb5_error_code ret; krb5_storage *request, *response; krb5_data response_data; char *name; int aret; *str = NULL; ret = krb5_kcm_storage_request(context, KCM_OP_GET_DEFAULT_CACHE, &request); if (ret) return ret; ret = krb5_kcm_call(context, request, &response, &response_data); krb5_storage_free(request); if (ret) { if (defstr) return _krb5_expand_default_cc_name(context, defstr, str); return ret; } ret = krb5_ret_stringz(response, &name); krb5_storage_free(response); krb5_data_free(&response_data); if (ret) return ret; aret = asprintf(str, "%s:%s", ops->prefix, name); free(name); if (aret == -1 || *str == NULL) return krb5_enomem(context); return 0; } static krb5_error_code kcm_get_default_name_api(krb5_context context, char **str) { return kcm_get_default_name(context, &krb5_akcm_ops, KRB5_DEFAULT_CCNAME_KCM_API, str); } static krb5_error_code kcm_get_default_name_kcm(krb5_context context, char **str) { return kcm_get_default_name(context, &krb5_kcm_ops, KRB5_DEFAULT_CCNAME_KCM_KCM, str); } static krb5_error_code kcm_set_default(krb5_context context, krb5_ccache id) { krb5_error_code ret; krb5_storage *request; krb5_kcmcache *k = KCMCACHE(id); ret = krb5_kcm_storage_request(context, KCM_OP_SET_DEFAULT_CACHE, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } static krb5_error_code kcm_lastchange(krb5_context context, krb5_ccache id, krb5_timestamp *mtime) { *mtime = time(NULL); return 0; } static krb5_error_code kcm_set_kdc_offset(krb5_context context, krb5_ccache id, krb5_deltat kdc_offset) { krb5_kcmcache *k = KCMCACHE(id); krb5_error_code ret; krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_SET_KDC_OFFSET, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_int32(request, kdc_offset); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } static krb5_error_code kcm_get_kdc_offset(krb5_context context, krb5_ccache id, krb5_deltat *kdc_offset) { krb5_kcmcache *k = KCMCACHE(id); krb5_error_code ret; krb5_storage *request, *response; krb5_data response_data; int32_t offset; ret = krb5_kcm_storage_request(context, KCM_OP_GET_KDC_OFFSET, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, &response, &response_data); krb5_storage_free(request); if (ret) return ret; ret = krb5_ret_int32(response, &offset); krb5_storage_free(response); krb5_data_free(&response_data); if (ret) return ret; *kdc_offset = offset; return 0; } /** * Variable containing the KCM based credential cache implemention. * * @ingroup krb5_ccache */ KRB5_LIB_VARIABLE const krb5_cc_ops krb5_kcm_ops = { KRB5_CC_OPS_VERSION_5, "KCM", NULL, NULL, kcm_gen_new_kcm, kcm_initialize, kcm_destroy, kcm_close, kcm_store_cred, NULL /* kcm_retrieve */, kcm_get_principal, kcm_get_first, kcm_get_next, kcm_end_get, kcm_remove_cred, kcm_set_flags, kcm_get_version, kcm_get_cache_first, kcm_get_cache_next_kcm, kcm_end_cache_get, kcm_move, kcm_get_default_name_kcm, kcm_set_default, kcm_lastchange, kcm_set_kdc_offset, kcm_get_kdc_offset, kcm_get_name_2, kcm_resolve_2_kcm }; KRB5_LIB_VARIABLE const krb5_cc_ops krb5_akcm_ops = { KRB5_CC_OPS_VERSION_5, "API", NULL, NULL, kcm_gen_new_api, kcm_initialize, kcm_destroy, kcm_close, kcm_store_cred, NULL /* kcm_retrieve */, kcm_get_principal, kcm_get_first, kcm_get_next, kcm_end_get, kcm_remove_cred, kcm_set_flags, kcm_get_version, kcm_get_cache_first, kcm_get_cache_next_api, kcm_end_cache_get, kcm_move, kcm_get_default_name_api, kcm_set_default, kcm_lastchange, NULL, NULL, kcm_get_name_2, kcm_resolve_2_api }; KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL _krb5_kcm_is_running(krb5_context context) { krb5_error_code ret; krb5_ccache_data ccdata; krb5_ccache id = &ccdata; krb5_boolean running; ret = kcm_alloc(context, NULL, NULL, NULL, &id); if (ret) return 0; running = (_krb5_kcm_noop(context, id) == 0); kcm_free(context, &id); return running; } /* * Request: * * Response: * */ KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL _krb5_kcm_noop(krb5_context context, krb5_ccache id) { krb5_error_code ret; krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_NOOP, &request); if (ret) return ret; ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } /* * Request: * NameZ * ServerPrincipalPresent * ServerPrincipal OPTIONAL * Key * * Repsonse: * */ KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL _krb5_kcm_get_initial_ticket(krb5_context context, krb5_ccache id, krb5_principal server, krb5_keyblock *key) { krb5_kcmcache *k = KCMCACHE(id); krb5_error_code ret; krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_GET_INITIAL_TICKET, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_int8(request, (server == NULL) ? 0 : 1); if (ret) { krb5_storage_free(request); return ret; } if (server != NULL) { ret = krb5_store_principal(request, server); if (ret) { krb5_storage_free(request); return ret; } } ret = krb5_store_keyblock(request, *key); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } /* * Request: * NameZ * KDCFlags * EncryptionType * ServerPrincipal * * Repsonse: * */ KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL _krb5_kcm_get_ticket(krb5_context context, krb5_ccache id, krb5_kdc_flags flags, krb5_enctype enctype, krb5_principal server) { krb5_error_code ret; krb5_kcmcache *k = KCMCACHE(id); krb5_storage *request; ret = krb5_kcm_storage_request(context, KCM_OP_GET_TICKET, &request); if (ret) return ret; ret = krb5_store_stringz(request, k->name); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_int32(request, flags.i); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_int32(request, enctype); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_store_principal(request, server); if (ret) { krb5_storage_free(request); return ret; } ret = krb5_kcm_call(context, request, NULL, NULL); krb5_storage_free(request); return ret; } #endif /* HAVE_KCM */