1251881Speter/* 2251881Speter * ssl_server_trust_providers.c: providers for 3251881Speter * SVN_AUTH_CRED_SSL_SERVER_TRUST 4251881Speter * 5251881Speter * ==================================================================== 6251881Speter * Licensed to the Apache Software Foundation (ASF) under one 7251881Speter * or more contributor license agreements. See the NOTICE file 8251881Speter * distributed with this work for additional information 9251881Speter * regarding copyright ownership. The ASF licenses this file 10251881Speter * to you under the Apache License, Version 2.0 (the 11251881Speter * "License"); you may not use this file except in compliance 12251881Speter * with the License. You may obtain a copy of the License at 13251881Speter * 14251881Speter * http://www.apache.org/licenses/LICENSE-2.0 15251881Speter * 16251881Speter * Unless required by applicable law or agreed to in writing, 17251881Speter * software distributed under the License is distributed on an 18251881Speter * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 19251881Speter * KIND, either express or implied. See the License for the 20251881Speter * specific language governing permissions and limitations 21251881Speter * under the License. 22251881Speter * ==================================================================== 23251881Speter */ 24251881Speter 25251881Speter#include <apr_pools.h> 26251881Speter 27251881Speter#include "svn_hash.h" 28251881Speter#include "svn_auth.h" 29251881Speter#include "svn_error.h" 30251881Speter#include "svn_config.h" 31251881Speter#include "svn_string.h" 32251881Speter 33251881Speter 34251881Speter/*-----------------------------------------------------------------------*/ 35251881Speter/* File provider */ 36251881Speter/*-----------------------------------------------------------------------*/ 37251881Speter 38251881Speter/* retrieve ssl server CA failure overrides (if any) from servers 39251881Speter config */ 40251881Speterstatic svn_error_t * 41251881Speterssl_server_trust_file_first_credentials(void **credentials, 42251881Speter void **iter_baton, 43251881Speter void *provider_baton, 44251881Speter apr_hash_t *parameters, 45251881Speter const char *realmstring, 46251881Speter apr_pool_t *pool) 47251881Speter{ 48251881Speter apr_uint32_t *failures = svn_hash_gets(parameters, 49251881Speter SVN_AUTH_PARAM_SSL_SERVER_FAILURES); 50251881Speter const svn_auth_ssl_server_cert_info_t *cert_info = 51251881Speter svn_hash_gets(parameters, SVN_AUTH_PARAM_SSL_SERVER_CERT_INFO); 52251881Speter apr_hash_t *creds_hash = NULL; 53251881Speter const char *config_dir; 54251881Speter svn_error_t *error = SVN_NO_ERROR; 55251881Speter 56251881Speter *credentials = NULL; 57251881Speter *iter_baton = NULL; 58251881Speter 59251881Speter /* Check if this is a permanently accepted certificate */ 60251881Speter config_dir = svn_hash_gets(parameters, SVN_AUTH_PARAM_CONFIG_DIR); 61251881Speter error = 62251881Speter svn_config_read_auth_data(&creds_hash, SVN_AUTH_CRED_SSL_SERVER_TRUST, 63251881Speter realmstring, config_dir, pool); 64251881Speter svn_error_clear(error); 65251881Speter if (! error && creds_hash) 66251881Speter { 67251881Speter svn_string_t *trusted_cert, *this_cert, *failstr; 68251881Speter apr_uint32_t last_failures = 0; 69251881Speter 70289180Speter trusted_cert = svn_hash_gets(creds_hash, SVN_CONFIG_AUTHN_ASCII_CERT_KEY); 71251881Speter this_cert = svn_string_create(cert_info->ascii_cert, pool); 72289180Speter failstr = svn_hash_gets(creds_hash, SVN_CONFIG_AUTHN_FAILURES_KEY); 73251881Speter 74251881Speter if (failstr) 75289180Speter SVN_ERR(svn_cstring_atoui(&last_failures, failstr->data)); 76251881Speter 77251881Speter /* If the cert is trusted and there are no new failures, we 78251881Speter * accept it by clearing all failures. */ 79251881Speter if (trusted_cert && 80251881Speter svn_string_compare(this_cert, trusted_cert) && 81251881Speter (*failures & ~last_failures) == 0) 82251881Speter { 83251881Speter *failures = 0; 84251881Speter } 85251881Speter } 86251881Speter 87251881Speter /* If all failures are cleared now, we return the creds */ 88251881Speter if (! *failures) 89251881Speter { 90251881Speter svn_auth_cred_ssl_server_trust_t *creds = 91251881Speter apr_pcalloc(pool, sizeof(*creds)); 92251881Speter creds->may_save = FALSE; /* No need to save it again... */ 93251881Speter *credentials = creds; 94251881Speter } 95251881Speter 96251881Speter return SVN_NO_ERROR; 97251881Speter} 98251881Speter 99251881Speter 100251881Speterstatic svn_error_t * 101251881Speterssl_server_trust_file_save_credentials(svn_boolean_t *saved, 102251881Speter void *credentials, 103251881Speter void *provider_baton, 104251881Speter apr_hash_t *parameters, 105251881Speter const char *realmstring, 106251881Speter apr_pool_t *pool) 107251881Speter{ 108251881Speter svn_auth_cred_ssl_server_trust_t *creds = credentials; 109251881Speter const svn_auth_ssl_server_cert_info_t *cert_info; 110251881Speter apr_hash_t *creds_hash = NULL; 111251881Speter const char *config_dir; 112251881Speter 113251881Speter if (! creds->may_save) 114251881Speter return SVN_NO_ERROR; 115251881Speter 116251881Speter config_dir = svn_hash_gets(parameters, SVN_AUTH_PARAM_CONFIG_DIR); 117251881Speter 118251881Speter cert_info = svn_hash_gets(parameters, SVN_AUTH_PARAM_SSL_SERVER_CERT_INFO); 119251881Speter 120251881Speter creds_hash = apr_hash_make(pool); 121289180Speter svn_hash_sets(creds_hash, SVN_CONFIG_AUTHN_ASCII_CERT_KEY, 122251881Speter svn_string_create(cert_info->ascii_cert, pool)); 123289180Speter svn_hash_sets(creds_hash, SVN_CONFIG_AUTHN_FAILURES_KEY, 124251881Speter svn_string_createf(pool, "%lu", 125251881Speter (unsigned long)creds->accepted_failures)); 126251881Speter 127251881Speter SVN_ERR(svn_config_write_auth_data(creds_hash, 128251881Speter SVN_AUTH_CRED_SSL_SERVER_TRUST, 129251881Speter realmstring, 130251881Speter config_dir, 131251881Speter pool)); 132251881Speter *saved = TRUE; 133251881Speter return SVN_NO_ERROR; 134251881Speter} 135251881Speter 136251881Speter 137251881Speterstatic const svn_auth_provider_t ssl_server_trust_file_provider = { 138251881Speter SVN_AUTH_CRED_SSL_SERVER_TRUST, 139289180Speter ssl_server_trust_file_first_credentials, 140251881Speter NULL, 141289180Speter ssl_server_trust_file_save_credentials, 142251881Speter}; 143251881Speter 144251881Speter 145251881Speter/*** Public API to SSL file providers. ***/ 146251881Spetervoid 147251881Spetersvn_auth_get_ssl_server_trust_file_provider 148251881Speter (svn_auth_provider_object_t **provider, apr_pool_t *pool) 149251881Speter{ 150251881Speter svn_auth_provider_object_t *po = apr_pcalloc(pool, sizeof(*po)); 151251881Speter 152251881Speter po->vtable = &ssl_server_trust_file_provider; 153251881Speter *provider = po; 154251881Speter} 155251881Speter 156251881Speter 157251881Speter/*-----------------------------------------------------------------------*/ 158251881Speter/* Prompt provider */ 159251881Speter/*-----------------------------------------------------------------------*/ 160251881Speter 161251881Speter/* Baton type for prompting to verify server ssl creds. 162251881Speter There is no iteration baton type. */ 163251881Spetertypedef struct ssl_server_trust_prompt_provider_baton_t 164251881Speter{ 165251881Speter svn_auth_ssl_server_trust_prompt_func_t prompt_func; 166251881Speter void *prompt_baton; 167251881Speter} ssl_server_trust_prompt_provider_baton_t; 168251881Speter 169251881Speter 170251881Speterstatic svn_error_t * 171251881Speterssl_server_trust_prompt_first_cred(void **credentials_p, 172251881Speter void **iter_baton, 173251881Speter void *provider_baton, 174251881Speter apr_hash_t *parameters, 175251881Speter const char *realmstring, 176251881Speter apr_pool_t *pool) 177251881Speter{ 178251881Speter ssl_server_trust_prompt_provider_baton_t *pb = provider_baton; 179251881Speter apr_uint32_t *failures = svn_hash_gets(parameters, 180251881Speter SVN_AUTH_PARAM_SSL_SERVER_FAILURES); 181251881Speter const char *no_auth_cache = svn_hash_gets(parameters, 182251881Speter SVN_AUTH_PARAM_NO_AUTH_CACHE); 183251881Speter const svn_auth_ssl_server_cert_info_t *cert_info = 184251881Speter svn_hash_gets(parameters, SVN_AUTH_PARAM_SSL_SERVER_CERT_INFO); 185251881Speter svn_boolean_t may_save = (!no_auth_cache 186251881Speter && !(*failures & SVN_AUTH_SSL_OTHER)); 187251881Speter 188251881Speter SVN_ERR(pb->prompt_func((svn_auth_cred_ssl_server_trust_t **)credentials_p, 189251881Speter pb->prompt_baton, realmstring, *failures, cert_info, 190251881Speter may_save, pool)); 191251881Speter 192251881Speter *iter_baton = NULL; 193251881Speter return SVN_NO_ERROR; 194251881Speter} 195251881Speter 196251881Speter 197251881Speterstatic const svn_auth_provider_t ssl_server_trust_prompt_provider = { 198251881Speter SVN_AUTH_CRED_SSL_SERVER_TRUST, 199251881Speter ssl_server_trust_prompt_first_cred, 200251881Speter NULL, 201251881Speter NULL 202251881Speter}; 203251881Speter 204251881Speter 205251881Speter/*** Public API to SSL prompting providers. ***/ 206251881Spetervoid 207251881Spetersvn_auth_get_ssl_server_trust_prompt_provider 208251881Speter (svn_auth_provider_object_t **provider, 209251881Speter svn_auth_ssl_server_trust_prompt_func_t prompt_func, 210251881Speter void *prompt_baton, 211251881Speter apr_pool_t *pool) 212251881Speter{ 213251881Speter svn_auth_provider_object_t *po = apr_pcalloc(pool, sizeof(*po)); 214251881Speter ssl_server_trust_prompt_provider_baton_t *pb = 215251881Speter apr_palloc(pool, sizeof(*pb)); 216251881Speter pb->prompt_func = prompt_func; 217251881Speter pb->prompt_baton = prompt_baton; 218251881Speter po->vtable = &ssl_server_trust_prompt_provider; 219251881Speter po->provider_baton = pb; 220251881Speter *provider = po; 221251881Speter} 222