diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/modules/ssl/ssl_util_ssl.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/modules/ssl/ssl_util_ssl.c | 574 |
1 files changed, 574 insertions, 0 deletions
diff --git a/rubbos/app/httpd-2.0.64/modules/ssl/ssl_util_ssl.c b/rubbos/app/httpd-2.0.64/modules/ssl/ssl_util_ssl.c new file mode 100644 index 00000000..857bc304 --- /dev/null +++ b/rubbos/app/httpd-2.0.64/modules/ssl/ssl_util_ssl.c @@ -0,0 +1,574 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/* _ _ + * _ __ ___ ___ __| | ___ ___| | mod_ssl + * | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL + * | | | | | | (_) | (_| | \__ \__ \ | + * |_| |_| |_|\___/ \__,_|___|___/___/_| + * |_____| + * ssl_util_ssl.c + * Additional Utility Functions for OpenSSL + */ + +#include "mod_ssl.h" + +/* _________________________________________________________________ +** +** Additional High-Level Functions for OpenSSL +** _________________________________________________________________ +*/ + +/* we initialize this index at startup time + * and never write to it at request time, + * so this static is thread safe. + * also note that OpenSSL increments at static variable when + * SSL_get_ex_new_index() is called, so we _must_ do this at startup. + */ +static int SSL_app_data2_idx = -1; + +void SSL_init_app_data2_idx(void) +{ + int i; + + if (SSL_app_data2_idx > -1) { + return; + } + + /* we _do_ need to call this twice */ + for (i=0; i<=1; i++) { + SSL_app_data2_idx = + SSL_get_ex_new_index(0, + "Second Application Data for SSL", + NULL, NULL, NULL); + } +} + +void *SSL_get_app_data2(SSL *ssl) +{ + return (void *)SSL_get_ex_data(ssl, SSL_app_data2_idx); +} + +void SSL_set_app_data2(SSL *ssl, void *arg) +{ + SSL_set_ex_data(ssl, SSL_app_data2_idx, (char *)arg); + return; +} + +/* _________________________________________________________________ +** +** High-Level Certificate / Private Key Loading +** _________________________________________________________________ +*/ + +X509 *SSL_read_X509(char* filename, X509 **x509, modssl_read_bio_cb_fn *cb) +{ + X509 *rc; + BIO *bioS; + BIO *bioF; + + /* 1. try PEM (= DER+Base64+headers) */ + if ((bioS=BIO_new_file(filename, "r")) == NULL) + return NULL; + rc = modssl_PEM_read_bio_X509 (bioS, x509, cb, NULL); + BIO_free(bioS); + + if (rc == NULL) { + /* 2. try DER+Base64 */ + if ((bioS=BIO_new_file(filename, "r")) == NULL) + return NULL; + + if ((bioF = BIO_new(BIO_f_base64())) == NULL) { + BIO_free(bioS); + return NULL; + } + bioS = BIO_push(bioF, bioS); + rc = d2i_X509_bio(bioS, NULL); + BIO_free_all(bioS); + + if (rc == NULL) { + /* 3. try plain DER */ + if ((bioS=BIO_new_file(filename, "r")) == NULL) + return NULL; + rc = d2i_X509_bio(bioS, NULL); + BIO_free(bioS); + } + } + if (rc != NULL && x509 != NULL) { + if (*x509 != NULL) + X509_free(*x509); + *x509 = rc; + } + return rc; +} + +#if SSL_LIBRARY_VERSION <= 0x00904100 +static EVP_PKEY *d2i_PrivateKey_bio(BIO *bio, EVP_PKEY **key) +{ + return ((EVP_PKEY *)ASN1_d2i_bio( + (char *(*)())EVP_PKEY_new, + (char *(*)())d2i_PrivateKey, + (bio), (unsigned char **)(key))); +} +#endif + +EVP_PKEY *SSL_read_PrivateKey(char* filename, EVP_PKEY **key, modssl_read_bio_cb_fn *cb, void *s) +{ + EVP_PKEY *rc; + BIO *bioS; + BIO *bioF; + + /* 1. try PEM (= DER+Base64+headers) */ + if ((bioS=BIO_new_file(filename, "r")) == NULL) + return NULL; + rc = modssl_PEM_read_bio_PrivateKey(bioS, key, cb, s); + BIO_free(bioS); + + if (rc == NULL) { + /* 2. try DER+Base64 */ + if ((bioS = BIO_new_file(filename, "r")) == NULL) + return NULL; + + if ((bioF = BIO_new(BIO_f_base64())) == NULL) { + BIO_free(bioS); + return NULL; + } + bioS = BIO_push(bioF, bioS); + rc = d2i_PrivateKey_bio(bioS, NULL); + BIO_free_all(bioS); + + if (rc == NULL) { + /* 3. try plain DER */ + if ((bioS = BIO_new_file(filename, "r")) == NULL) + return NULL; + rc = d2i_PrivateKey_bio(bioS, NULL); + BIO_free(bioS); + } + } + if (rc != NULL && key != NULL) { + if (*key != NULL) + EVP_PKEY_free(*key); + *key = rc; + } + return rc; +} + +/* _________________________________________________________________ +** +** Smart shutdown +** _________________________________________________________________ +*/ + +int SSL_smart_shutdown(SSL *ssl) +{ + int i; + int rc; + + /* + * Repeat the calls, because SSL_shutdown internally dispatches through a + * little state machine. Usually only one or two interation should be + * needed, so we restrict the total number of restrictions in order to + * avoid process hangs in case the client played bad with the socket + * connection and OpenSSL cannot recognize it. + */ + rc = 0; + for (i = 0; i < 4 /* max 2x pending + 2x data = 4 */; i++) { + if ((rc = SSL_shutdown(ssl))) + break; + } + return rc; +} + +/* _________________________________________________________________ +** +** Certificate Revocation List (CRL) Storage +** _________________________________________________________________ +*/ + +X509_STORE *SSL_X509_STORE_create(char *cpFile, char *cpPath) +{ + X509_STORE *pStore; + X509_LOOKUP *pLookup; + + if (cpFile == NULL && cpPath == NULL) + return NULL; + if ((pStore = X509_STORE_new()) == NULL) + return NULL; + if (cpFile != NULL) { + pLookup = X509_STORE_add_lookup(pStore, X509_LOOKUP_file()); + if (pLookup == NULL) { + X509_STORE_free(pStore); + return NULL; + } + X509_LOOKUP_load_file(pLookup, cpFile, X509_FILETYPE_PEM); + } + if (cpPath != NULL) { + pLookup = X509_STORE_add_lookup(pStore, X509_LOOKUP_hash_dir()); + if (pLookup == NULL) { + X509_STORE_free(pStore); + return NULL; + } + X509_LOOKUP_add_dir(pLookup, cpPath, X509_FILETYPE_PEM); + } + return pStore; +} + +int SSL_X509_STORE_lookup(X509_STORE *pStore, int nType, + X509_NAME *pName, X509_OBJECT *pObj) +{ + X509_STORE_CTX pStoreCtx; + int rc; + + X509_STORE_CTX_init(&pStoreCtx, pStore, NULL, NULL); + rc = X509_STORE_get_by_subject(&pStoreCtx, nType, pName, pObj); + X509_STORE_CTX_cleanup(&pStoreCtx); + return rc; +} + +/* _________________________________________________________________ +** +** Cipher Suite Spec String Creation +** _________________________________________________________________ +*/ + +char *SSL_make_ciphersuite(apr_pool_t *p, SSL *ssl) +{ + STACK_OF(SSL_CIPHER) *sk; + SSL_CIPHER *c; + int i; + int l; + char *cpCipherSuite; + char *cp; + + if (ssl == NULL) + return ""; + if ((sk = (STACK_OF(SSL_CIPHER) *)SSL_get_ciphers(ssl)) == NULL) + return ""; + l = 0; + for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { + c = sk_SSL_CIPHER_value(sk, i); + l += strlen(SSL_CIPHER_get_name(c))+2+1; + } + if (l == 0) + return ""; + cpCipherSuite = (char *)apr_palloc(p, l+1); + cp = cpCipherSuite; + for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { + c = sk_SSL_CIPHER_value(sk, i); + l = strlen(SSL_CIPHER_get_name(c)); + memcpy(cp, SSL_CIPHER_get_name(c), l); + cp += l; + *cp++ = '/'; + *cp++ = (SSL_CIPHER_get_valid(c) == 1 ? '1' : '0'); + *cp++ = ':'; + } + *(cp-1) = NUL; + return cpCipherSuite; +} + +/* _________________________________________________________________ +** +** Certificate Checks +** _________________________________________________________________ +*/ + +/* check whether cert contains extended key usage with a SGC tag */ +BOOL SSL_X509_isSGC(X509 *cert) +{ +#ifdef HAVE_SSL_X509V3_EXT_d2i + X509_EXTENSION *ext; + int ext_nid; + STACK *sk; + BOOL is_sgc; + int idx; + int i; + + is_sgc = FALSE; + idx = X509_get_ext_by_NID(cert, NID_ext_key_usage, -1); + if (idx >= 0) { + ext = X509_get_ext(cert, idx); + if ((sk = (STACK *)X509V3_EXT_d2i(ext)) != NULL) { + for (i = 0; i < sk_num(sk); i++) { + ext_nid = OBJ_obj2nid((ASN1_OBJECT *)sk_value(sk, i)); + if (ext_nid == NID_ms_sgc || ext_nid == NID_ns_sgc) { + is_sgc = TRUE; + break; + } + } + } + } + return is_sgc; +#else + return FALSE; +#endif +} + +/* retrieve basic constraints ingredients */ +BOOL SSL_X509_getBC(X509 *cert, int *ca, int *pathlen) +{ +#ifdef HAVE_SSL_X509V3_EXT_d2i + X509_EXTENSION *ext; + BASIC_CONSTRAINTS *bc; + int idx; + BIGNUM *bn = NULL; + char *cp; + + if ((idx = X509_get_ext_by_NID(cert, NID_basic_constraints, -1)) < 0) + return FALSE; + ext = X509_get_ext(cert, idx); + if (ext == NULL) + return FALSE; + if ((bc = (BASIC_CONSTRAINTS *)X509V3_EXT_d2i(ext)) == NULL) + return FALSE; + *ca = bc->ca; + *pathlen = -1 /* unlimited */; + if (bc->pathlen != NULL) { + if ((bn = ASN1_INTEGER_to_BN(bc->pathlen, NULL)) == NULL) + return FALSE; + if ((cp = BN_bn2dec(bn)) == NULL) + return FALSE; + *pathlen = atoi(cp); + free(cp); + BN_free(bn); + } + BASIC_CONSTRAINTS_free(bc); + return TRUE; +#else + return FALSE; +#endif +} + +/* retrieve subject CommonName of certificate */ +BOOL SSL_X509_getCN(apr_pool_t *p, X509 *xs, char **cppCN) +{ + X509_NAME *xsn; + X509_NAME_ENTRY *xsne; + int i, nid; + unsigned char *data_ptr; + int data_len; + + xsn = X509_get_subject_name(xs); + for (i = 0; i < sk_X509_NAME_ENTRY_num((STACK_OF(X509_NAME_ENTRY) *) + X509_NAME_get_entries(xsn)); i++) { + xsne = sk_X509_NAME_ENTRY_value((STACK_OF(X509_NAME_ENTRY) *) + X509_NAME_get_entries(xsn), i); + nid = OBJ_obj2nid((ASN1_OBJECT *)X509_NAME_ENTRY_get_object(xsne)); + if (nid == NID_commonName) { + data_ptr = X509_NAME_ENTRY_get_data_ptr(xsne); + data_len = X509_NAME_ENTRY_get_data_len(xsne); + *cppCN = apr_palloc(p, data_len+1); + apr_cpystrn(*cppCN, (char *)data_ptr, data_len+1); + (*cppCN)[data_len] = NUL; +#ifdef CHARSET_EBCDIC + ascii2ebcdic(*cppCN, *cppCN, strlen(*cppCN)); +#endif + return TRUE; + } + } + return FALSE; +} + +/* _________________________________________________________________ +** +** Low-Level CA Certificate Loading +** _________________________________________________________________ +*/ + +BOOL SSL_X509_INFO_load_file(apr_pool_t *ptemp, + STACK_OF(X509_INFO) *sk, + const char *filename) +{ + BIO *in; + + if (!(in = BIO_new(BIO_s_file()))) { + return FALSE; + } + + if (BIO_read_filename(in, MODSSL_PCHAR_CAST filename) <= 0) { + BIO_free(in); + return FALSE; + } + + ERR_clear_error(); + + modssl_PEM_X509_INFO_read_bio(in, sk, NULL, NULL); + + BIO_free(in); + + return TRUE; +} + +BOOL SSL_X509_INFO_load_path(apr_pool_t *ptemp, + STACK_OF(X509_INFO) *sk, + const char *pathname) +{ + /* XXX: this dir read code is exactly the same as that in + * ssl_engine_init.c, only the call to handle the fullname is different, + * should fold the duplication. + */ + apr_dir_t *dir; + apr_finfo_t dirent; + apr_int32_t finfo_flags = APR_FINFO_TYPE|APR_FINFO_NAME; + const char *fullname; + BOOL ok = FALSE; + + if (apr_dir_open(&dir, pathname, ptemp) != APR_SUCCESS) { + return FALSE; + } + + while ((apr_dir_read(&dirent, finfo_flags, dir)) == APR_SUCCESS) { + if (dirent.filetype == APR_DIR) { + continue; /* don't try to load directories */ + } + + fullname = apr_pstrcat(ptemp, + pathname, "/", dirent.name, + NULL); + + if (SSL_X509_INFO_load_file(ptemp, sk, fullname)) { + ok = TRUE; + } + } + + apr_dir_close(dir); + + return ok; +} + +/* _________________________________________________________________ +** +** Extra Server Certificate Chain Support +** _________________________________________________________________ +*/ + +/* + * Read a file that optionally contains the server certificate in PEM + * format, possibly followed by a sequence of CA certificates that + * should be sent to the peer in the SSL Certificate message. + */ +int SSL_CTX_use_certificate_chain( + SSL_CTX *ctx, char *file, int skipfirst, modssl_read_bio_cb_fn *cb) +{ + BIO *bio; + X509 *x509; + unsigned long err; + int n; + STACK *extra_certs; + + if ((bio = BIO_new(BIO_s_file_internal())) == NULL) + return -1; + if (BIO_read_filename(bio, file) <= 0) { + BIO_free(bio); + return -1; + } + /* optionally skip a leading server certificate */ + if (skipfirst) { + if ((x509 = modssl_PEM_read_bio_X509(bio, NULL, cb, NULL)) == NULL) { + BIO_free(bio); + return -1; + } + X509_free(x509); + } + /* free a perhaps already configured extra chain */ + extra_certs=SSL_CTX_get_extra_certs(ctx); + if (extra_certs != NULL) { + sk_X509_pop_free((STACK_OF(X509) *)extra_certs, X509_free); + SSL_CTX_set_extra_certs(ctx,NULL); + } + /* create new extra chain by loading the certs */ + n = 0; + while ((x509 = modssl_PEM_read_bio_X509(bio, NULL, cb, NULL)) != NULL) { + if (!SSL_CTX_add_extra_chain_cert(ctx, x509)) { + X509_free(x509); + BIO_free(bio); + return -1; + } + n++; + } + /* Make sure that only the error is just an EOF */ + if ((err = ERR_peek_error()) > 0) { + if (!( ERR_GET_LIB(err) == ERR_LIB_PEM + && ERR_GET_REASON(err) == PEM_R_NO_START_LINE)) { + BIO_free(bio); + return -1; + } + while (ERR_get_error() > 0) ; + } + BIO_free(bio); + return n; +} + +/* _________________________________________________________________ +** +** Session Stuff +** _________________________________________________________________ +*/ + +char *SSL_SESSION_id2sz(unsigned char *id, int idlen, + char *str, int strsize) +{ + char *cp; + int n; + + cp = str; + for (n = 0; n < idlen && n < SSL_MAX_SSL_SESSION_ID_LENGTH; n++) { + apr_snprintf(cp, strsize - (cp-str), "%02X", id[n]); + cp += 2; + } + *cp = NUL; + return str; +} + +/* sslc+OpenSSL compat */ + +int modssl_session_get_time(SSL_SESSION *session) +{ +#ifdef OPENSSL_VERSION_NUMBER + return SSL_SESSION_get_time(session); +#else /* assume sslc */ + CRYPTO_TIME_T ct; + SSL_SESSION_get_time(session, &ct); + return CRYPTO_time_to_int(&ct); +#endif +} + +#ifndef SSLC_VERSION_NUMBER +#define SSLC_VERSION_NUMBER 0x0000 +#endif + +DH *modssl_dh_configure(unsigned char *p, int plen, + unsigned char *g, int glen) +{ + DH *dh; + + if (!(dh = DH_new())) { + return NULL; + } + +#if defined(OPENSSL_VERSION_NUMBER) || (SSLC_VERSION_NUMBER < 0x2000) + dh->p = BN_bin2bn(p, plen, NULL); + dh->g = BN_bin2bn(g, glen, NULL); + if (!(dh->p && dh->g)) { + DH_free(dh); + return NULL; + } +#else + R_EITEMS_add(dh->data, PK_TYPE_DH, PK_DH_P, 0, p, plen, R_EITEMS_PF_COPY); + R_EITEMS_add(dh->data, PK_TYPE_DH, PK_DH_G, 0, g, glen, R_EITEMS_PF_COPY); +#endif + + return dh; +} |