[fcb122d] | 1 | /** |
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| 2 | * Copyright 2004-2005 Paul Querna |
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[e021722] | 3 | * Copyright 2008, 2014 Nikos Mavrogiannopoulos |
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[e183628] | 4 | * Copyright 2011 Dash Shendy |
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[8913410] | 5 | * Copyright 2015-2016 Thomas Klute |
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[9706fc2] | 6 | * |
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| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 8 | * you may not use this file except in compliance with the License. |
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| 9 | * You may obtain a copy of the License at |
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| 10 | * |
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| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 12 | * |
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| 13 | * Unless required by applicable law or agreed to in writing, software |
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| 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 16 | * See the License for the specific language governing permissions and |
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| 17 | * limitations under the License. |
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| 18 | * |
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| 19 | */ |
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| 20 | |
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[7e2b223] | 21 | #include "mod_gnutls.h" |
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[94cb972] | 22 | #include "gnutls_ocsp.h" |
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[9706fc2] | 23 | |
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[e8acf05] | 24 | #ifdef APLOG_USE_MODULE |
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| 25 | APLOG_USE_MODULE(gnutls); |
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| 26 | #endif |
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[671b64f] | 27 | |
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[e8acf05] | 28 | static void gnutls_hooks(apr_pool_t * p __attribute__((unused))) |
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| 29 | { |
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[33826c5] | 30 | /* Try Run Post-Config Hook After mod_proxy */ |
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| 31 | static const char * const aszPre[] = { "mod_proxy.c", NULL }; |
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[accbb83] | 32 | ap_hook_post_config(mgs_hook_post_config, aszPre, NULL, |
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| 33 | APR_HOOK_REALLY_LAST); |
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[33826c5] | 34 | /* HTTP Scheme Hook */ |
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| 35 | ap_hook_http_scheme(mgs_hook_http_scheme, NULL, NULL, APR_HOOK_MIDDLE); |
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| 36 | /* Default Port Hook */ |
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[accbb83] | 37 | ap_hook_default_port(mgs_hook_default_port, NULL, NULL, APR_HOOK_MIDDLE); |
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[33826c5] | 38 | /* Pre-Connect Hook */ |
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[accbb83] | 39 | ap_hook_pre_connection(mgs_hook_pre_connection, NULL, NULL, |
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| 40 | APR_HOOK_MIDDLE); |
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[33826c5] | 41 | /* Pre-Config Hook */ |
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[e183628] | 42 | ap_hook_pre_config(mgs_hook_pre_config, NULL, NULL, |
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[accbb83] | 43 | APR_HOOK_MIDDLE); |
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[33826c5] | 44 | /* Child-Init Hook */ |
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| 45 | ap_hook_child_init(mgs_hook_child_init, NULL, NULL, |
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[accbb83] | 46 | APR_HOOK_MIDDLE); |
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[33826c5] | 47 | /* Authentication Hook */ |
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[e183628] | 48 | ap_hook_access_checker(mgs_hook_authz, NULL, NULL, |
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[accbb83] | 49 | APR_HOOK_REALLY_FIRST); |
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[33826c5] | 50 | /* Fixups Hook */ |
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[e183628] | 51 | ap_hook_fixups(mgs_hook_fixups, NULL, NULL, APR_HOOK_REALLY_FIRST); |
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[e02dd8c] | 52 | |
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[e183628] | 53 | /* TODO: HTTP Upgrade Filter */ |
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[671b64f] | 54 | /* ap_register_output_filter ("UPGRADE_FILTER", |
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[e183628] | 55 | * ssl_io_filter_Upgrade, NULL, AP_FTYPE_PROTOCOL + 5); |
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| 56 | */ |
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[e02dd8c] | 57 | |
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[33826c5] | 58 | /* Input Filter */ |
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[accbb83] | 59 | ap_register_input_filter(GNUTLS_INPUT_FILTER_NAME, mgs_filter_input, |
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| 60 | NULL, AP_FTYPE_CONNECTION + 5); |
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[33826c5] | 61 | /* Output Filter */ |
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[accbb83] | 62 | ap_register_output_filter(GNUTLS_OUTPUT_FILTER_NAME, mgs_filter_output, |
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| 63 | NULL, AP_FTYPE_CONNECTION + 5); |
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[671b64f] | 64 | |
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[33826c5] | 65 | /* mod_proxy calls these functions */ |
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| 66 | APR_REGISTER_OPTIONAL_FN(ssl_proxy_enable); |
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| 67 | APR_REGISTER_OPTIONAL_FN(ssl_engine_disable); |
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[8ac7c0d] | 68 | |
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| 69 | /* mod_rewrite calls this function to detect HTTPS */ |
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| 70 | APR_REGISTER_OPTIONAL_FN(ssl_is_https); |
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[33826c5] | 71 | } |
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| 72 | |
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[8ac7c0d] | 73 | |
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| 74 | |
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| 75 | /* |
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| 76 | * mod_rewrite calls this function to fill %{HTTPS}. A non-zero return |
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| 77 | * value means that HTTPS is in use. |
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| 78 | */ |
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[accbb83] | 79 | int ssl_is_https(conn_rec *c) |
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| 80 | { |
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[671b64f] | 81 | mgs_srvconf_rec *sc = (mgs_srvconf_rec *) |
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[accbb83] | 82 | ap_get_module_config(c->base_server->module_config, &gnutls_module); |
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[8ac7c0d] | 83 | mgs_handle_t *ctxt = (mgs_handle_t *) |
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| 84 | ap_get_module_config(c->conn_config, &gnutls_module); |
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| 85 | |
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| 86 | if(sc->enabled == GNUTLS_ENABLED_FALSE |
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| 87 | || ctxt == NULL |
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| 88 | || ctxt->enabled == GNUTLS_ENABLED_FALSE) |
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| 89 | { |
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[33826c5] | 90 | /* SSL/TLS Disabled or Plain HTTP Connection Detected */ |
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| 91 | return 0; |
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| 92 | } |
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| 93 | /* Connection is Using SSL/TLS */ |
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| 94 | return 1; |
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| 95 | } |
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| 96 | |
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[8ac7c0d] | 97 | |
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| 98 | |
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[e8acf05] | 99 | int ssl_engine_disable(conn_rec *c) |
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| 100 | { |
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[671b64f] | 101 | mgs_srvconf_rec *sc = (mgs_srvconf_rec *) |
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[e8acf05] | 102 | ap_get_module_config(c->base_server->module_config, &gnutls_module); |
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[33826c5] | 103 | if(sc->enabled == GNUTLS_ENABLED_FALSE) { |
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| 104 | return 1; |
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[671b64f] | 105 | } |
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[e8acf05] | 106 | |
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| 107 | /* disable TLS for this connection */ |
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[accbb83] | 108 | mgs_handle_t *ctxt = (mgs_handle_t *) |
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| 109 | ap_get_module_config(c->conn_config, &gnutls_module); |
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[e8acf05] | 110 | if (ctxt == NULL) |
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| 111 | { |
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| 112 | ctxt = apr_pcalloc(c->pool, sizeof (*ctxt)); |
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| 113 | ap_set_module_config(c->conn_config, &gnutls_module, ctxt); |
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| 114 | } |
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| 115 | ctxt->enabled = GNUTLS_ENABLED_FALSE; |
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[c1ef069] | 116 | ctxt->is_proxy = GNUTLS_ENABLED_TRUE; |
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[e8acf05] | 117 | |
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[3d361b8] | 118 | if (c->input_filters) |
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| 119 | ap_remove_input_filter(c->input_filters); |
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| 120 | if (c->output_filters) |
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| 121 | ap_remove_output_filter(c->output_filters); |
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[c782c1f] | 122 | |
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[33826c5] | 123 | return 1; |
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| 124 | } |
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| 125 | |
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[accbb83] | 126 | int ssl_proxy_enable(conn_rec *c) |
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| 127 | { |
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[07d548d] | 128 | /* check if TLS proxy support is enabled */ |
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[671b64f] | 129 | mgs_srvconf_rec *sc = (mgs_srvconf_rec *) |
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[accbb83] | 130 | ap_get_module_config(c->base_server->module_config, &gnutls_module); |
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[07d548d] | 131 | if (sc->proxy_enabled != GNUTLS_ENABLED_TRUE) |
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| 132 | { |
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| 133 | ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, c, |
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| 134 | "%s: mod_proxy requested TLS proxy, but not enabled " |
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| 135 | "for %s", __func__, sc->cert_cn); |
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| 136 | return 0; |
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| 137 | } |
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| 138 | |
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| 139 | /* enable TLS for this connection */ |
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| 140 | mgs_handle_t *ctxt = (mgs_handle_t *) |
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| 141 | ap_get_module_config(c->conn_config, &gnutls_module); |
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| 142 | if (ctxt == NULL) |
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| 143 | { |
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| 144 | ctxt = apr_pcalloc(c->pool, sizeof (*ctxt)); |
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| 145 | ap_set_module_config(c->conn_config, &gnutls_module, ctxt); |
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| 146 | } |
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| 147 | ctxt->enabled = GNUTLS_ENABLED_TRUE; |
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[c1ef069] | 148 | ctxt->is_proxy = GNUTLS_ENABLED_TRUE; |
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[37f8282] | 149 | return 1; |
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[9706fc2] | 150 | } |
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| 151 | |
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[46b85d8] | 152 | static const command_rec mgs_config_cmds[] = { |
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[176047e] | 153 | AP_INIT_FLAG("GnuTLSProxyEngine", mgs_set_proxy_engine, |
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[33826c5] | 154 | NULL, |
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| 155 | RSRC_CONF | OR_AUTHCFG, |
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[176047e] | 156 | "Enable TLS Proxy Engine"), |
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[87f1ed2] | 157 | AP_INIT_TAKE1("GnuTLSP11Module", mgs_set_p11_module, |
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| 158 | NULL, |
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| 159 | RSRC_CONF, |
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[f21d2a6] | 160 | "Load this specific PKCS #11 provider library"), |
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[031acac] | 161 | AP_INIT_RAW_ARGS("GnuTLSPIN", mgs_set_pin, |
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| 162 | NULL, |
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| 163 | RSRC_CONF, |
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| 164 | "The PIN to use in case of encrypted keys or PKCS #11 tokens."), |
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| 165 | AP_INIT_RAW_ARGS("GnuTLSSRKPIN", mgs_set_srk_pin, |
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| 166 | NULL, |
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| 167 | RSRC_CONF, |
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| 168 | "The SRK PIN to use in case of TPM keys."), |
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[e183628] | 169 | AP_INIT_TAKE1("GnuTLSClientVerify", mgs_set_client_verify, |
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| 170 | NULL, |
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| 171 | RSRC_CONF | OR_AUTHCFG, |
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| 172 | "Set Verification Requirements of the Client Certificate"), |
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[cf2b905] | 173 | AP_INIT_TAKE1("GnuTLSClientVerifyMethod", mgs_set_client_verify_method, |
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| 174 | NULL, |
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| 175 | RSRC_CONF, |
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| 176 | "Set Verification Method of the Client Certificate"), |
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[e183628] | 177 | AP_INIT_TAKE1("GnuTLSClientCAFile", mgs_set_client_ca_file, |
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| 178 | NULL, |
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| 179 | RSRC_CONF, |
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| 180 | "Set the CA File to verify Client Certificates"), |
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| 181 | AP_INIT_TAKE1("GnuTLSX509CAFile", mgs_set_client_ca_file, |
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| 182 | NULL, |
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| 183 | RSRC_CONF, |
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| 184 | "Set the CA File to verify Client Certificates"), |
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| 185 | AP_INIT_TAKE1("GnuTLSPGPKeyringFile", mgs_set_keyring_file, |
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| 186 | NULL, |
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| 187 | RSRC_CONF, |
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| 188 | "Set the Keyring File to verify Client Certificates"), |
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| 189 | AP_INIT_TAKE1("GnuTLSDHFile", mgs_set_dh_file, |
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| 190 | NULL, |
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| 191 | RSRC_CONF, |
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| 192 | "Set the file to read Diffie Hellman parameters from"), |
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| 193 | AP_INIT_TAKE1("GnuTLSCertificateFile", mgs_set_cert_file, |
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| 194 | NULL, |
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| 195 | RSRC_CONF, |
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[88df24d] | 196 | "TLS Server X509 Certificate file"), |
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[e183628] | 197 | AP_INIT_TAKE1("GnuTLSKeyFile", mgs_set_key_file, |
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| 198 | NULL, |
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| 199 | RSRC_CONF, |
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[88df24d] | 200 | "TLS Server X509 Private Key file"), |
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[e183628] | 201 | AP_INIT_TAKE1("GnuTLSX509CertificateFile", mgs_set_cert_file, |
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| 202 | NULL, |
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| 203 | RSRC_CONF, |
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[88df24d] | 204 | "TLS Server X509 Certificate file"), |
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[e183628] | 205 | AP_INIT_TAKE1("GnuTLSX509KeyFile", mgs_set_key_file, |
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| 206 | NULL, |
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| 207 | RSRC_CONF, |
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[88df24d] | 208 | "TLS Server X509 Private Key file"), |
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[e183628] | 209 | AP_INIT_TAKE1("GnuTLSPGPCertificateFile", mgs_set_pgpcert_file, |
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| 210 | NULL, |
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| 211 | RSRC_CONF, |
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[88df24d] | 212 | "TLS Server PGP Certificate file"), |
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[e183628] | 213 | AP_INIT_TAKE1("GnuTLSPGPKeyFile", mgs_set_pgpkey_file, |
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| 214 | NULL, |
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| 215 | RSRC_CONF, |
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[88df24d] | 216 | "TLS Server PGP Private key file"), |
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[787dab7] | 217 | #ifdef ENABLE_SRP |
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[e183628] | 218 | AP_INIT_TAKE1("GnuTLSSRPPasswdFile", mgs_set_srp_tpasswd_file, |
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| 219 | NULL, |
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| 220 | RSRC_CONF, |
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[88df24d] | 221 | "TLS Server SRP Password Conf file"), |
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[e183628] | 222 | AP_INIT_TAKE1("GnuTLSSRPPasswdConfFile", |
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| 223 | mgs_set_srp_tpasswd_conf_file, |
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| 224 | NULL, |
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| 225 | RSRC_CONF, |
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[88df24d] | 226 | "TLS Server SRP Parameters file"), |
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[787dab7] | 227 | #endif |
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[70a1e5a] | 228 | AP_INIT_TAKE1("GnuTLSCacheTimeout", mgs_set_timeout, |
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[e183628] | 229 | NULL, |
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| 230 | RSRC_CONF, |
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| 231 | "Cache Timeout"), |
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| 232 | AP_INIT_TAKE12("GnuTLSCache", mgs_set_cache, |
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| 233 | NULL, |
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| 234 | RSRC_CONF, |
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| 235 | "Cache Configuration"), |
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[176047e] | 236 | AP_INIT_FLAG("GnuTLSSessionTickets", mgs_set_tickets, |
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[e183628] | 237 | NULL, |
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| 238 | RSRC_CONF, |
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| 239 | "Session Tickets Configuration"), |
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| 240 | AP_INIT_RAW_ARGS("GnuTLSPriorities", mgs_set_priorities, |
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| 241 | NULL, |
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| 242 | RSRC_CONF, |
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| 243 | "The priorities to enable (ciphers, Key exchange, macs, compression)."), |
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[176047e] | 244 | AP_INIT_FLAG("GnuTLSEnable", mgs_set_enabled, |
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[e183628] | 245 | NULL, |
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| 246 | RSRC_CONF, |
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| 247 | "Whether this server has GnuTLS Enabled. Default: Off"), |
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[7d1ab49] | 248 | AP_INIT_TAKE1("GnuTLSExportCertificates", |
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[2aaf4f5] | 249 | mgs_set_export_certificates_size, |
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[7d1ab49] | 250 | NULL, |
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| 251 | RSRC_CONF, |
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[2aaf4f5] | 252 | "Max size to export PEM encoded certificates to CGIs (or off to disable). Default: off"), |
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[0de1839] | 253 | AP_INIT_TAKE1("GnuTLSProxyKeyFile", mgs_store_cred_path, |
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| 254 | NULL, |
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| 255 | RSRC_CONF, |
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| 256 | "X509 client private file for proxy connections"), |
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| 257 | AP_INIT_TAKE1("GnuTLSProxyCertificateFile", mgs_store_cred_path, |
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| 258 | NULL, |
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| 259 | RSRC_CONF, |
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| 260 | "X509 client certificate file for proxy connections"), |
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| 261 | AP_INIT_TAKE1("GnuTLSProxyCAFile", mgs_store_cred_path, |
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| 262 | NULL, |
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| 263 | RSRC_CONF, |
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| 264 | "X509 trusted CA file for proxy connections"), |
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[809c422] | 265 | AP_INIT_TAKE1("GnuTLSProxyCRLFile", mgs_store_cred_path, |
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| 266 | NULL, |
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| 267 | RSRC_CONF, |
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| 268 | "X509 CRL file for proxy connections"), |
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[f030883] | 269 | AP_INIT_RAW_ARGS("GnuTLSProxyPriorities", mgs_set_priorities, |
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| 270 | NULL, |
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| 271 | RSRC_CONF, |
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| 272 | "The priorities to enable for proxy connections (ciphers, key exchange, " |
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| 273 | "MACs, compression)."), |
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[4d4a406] | 274 | AP_INIT_FLAG("GnuTLSOCSPStapling", mgs_ocsp_stapling_enable, |
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| 275 | NULL, |
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| 276 | RSRC_CONF, |
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| 277 | "EXPERIMENTAL: Enable OCSP stapling"), |
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[94cb972] | 278 | AP_INIT_TAKE1("GnuTLSOCSPResponseFile", mgs_store_ocsp_response_path, |
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| 279 | NULL, |
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| 280 | RSRC_CONF, |
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| 281 | "EXPERIMENTAL: OCSP response for stapling (must be updated externally)"), |
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[70a1e5a] | 282 | AP_INIT_TAKE1("GnuTLSOCSPGraceTime", mgs_set_timeout, |
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| 283 | NULL, |
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| 284 | RSRC_CONF, |
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| 285 | "EXPERIMENTAL: Replace cached OCSP responses this many seconds before " |
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| 286 | "they expire"), |
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[15b22cb] | 287 | #ifdef __clang__ |
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| 288 | /* Workaround for this clang bug: |
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| 289 | * https://llvm.org/bugs/show_bug.cgi?id=21689 */ |
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| 290 | {}, |
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| 291 | #else |
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[7d1ab49] | 292 | { NULL }, |
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[15b22cb] | 293 | #endif |
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[46b85d8] | 294 | }; |
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[9706fc2] | 295 | |
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| 296 | module AP_MODULE_DECLARE_DATA gnutls_module = { |
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[e183628] | 297 | STANDARD20_MODULE_STUFF, |
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[2d0f6cf] | 298 | .create_dir_config = mgs_config_dir_create, |
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| 299 | .merge_dir_config = mgs_config_dir_merge, |
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| 300 | .create_server_config = mgs_config_server_create, |
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[040387c] | 301 | .merge_server_config = mgs_config_server_merge, |
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[2d0f6cf] | 302 | .cmds = mgs_config_cmds, |
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| 303 | .register_hooks = gnutls_hooks |
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[9706fc2] | 304 | }; |
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