| /* |
| * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #if defined (__TANDEM) && defined (_SPT_MODEL_) |
| /* |
| * These definitions have to come first in SPT due to scoping of the |
| * declarations in c99 associated with SPT use of stat. |
| */ |
| # include <sys/types.h> |
| # include <sys/stat.h> |
| #endif |
| |
| #include "internal/e_os.h" |
| #include "internal/cryptlib.h" |
| #include <stdio.h> |
| #include <time.h> |
| #include <errno.h> |
| #include <sys/types.h> |
| |
| #ifndef OPENSSL_NO_POSIX_IO |
| # include <sys/stat.h> |
| #endif |
| |
| #include <openssl/x509.h> |
| #include "crypto/x509.h" |
| #include "x509_local.h" |
| |
| struct lookup_dir_hashes_st { |
| unsigned long hash; |
| int suffix; |
| }; |
| |
| struct lookup_dir_entry_st { |
| char *dir; |
| int dir_type; |
| STACK_OF(BY_DIR_HASH) *hashes; |
| }; |
| |
| typedef struct lookup_dir_st { |
| BUF_MEM *buffer; |
| STACK_OF(BY_DIR_ENTRY) *dirs; |
| CRYPTO_RWLOCK *lock; |
| } BY_DIR; |
| |
| static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl, |
| char **retp); |
| |
| static int new_dir(X509_LOOKUP *lu); |
| static void free_dir(X509_LOOKUP *lu); |
| static int add_cert_dir(BY_DIR *ctx, const char *dir, int type); |
| static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type, |
| const X509_NAME *name, X509_OBJECT *ret); |
| static int get_cert_by_subject_ex(X509_LOOKUP *xl, X509_LOOKUP_TYPE type, |
| const X509_NAME *name, X509_OBJECT *ret, |
| OSSL_LIB_CTX *libctx, const char *propq); |
| static X509_LOOKUP_METHOD x509_dir_lookup = { |
| "Load certs from files in a directory", |
| new_dir, /* new_item */ |
| free_dir, /* free */ |
| NULL, /* init */ |
| NULL, /* shutdown */ |
| dir_ctrl, /* ctrl */ |
| get_cert_by_subject, /* get_by_subject */ |
| NULL, /* get_by_issuer_serial */ |
| NULL, /* get_by_fingerprint */ |
| NULL, /* get_by_alias */ |
| get_cert_by_subject_ex, /* get_by_subject_ex */ |
| NULL, /* ctrl_ex */ |
| }; |
| |
| X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void) |
| { |
| return &x509_dir_lookup; |
| } |
| |
| static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl, |
| char **retp) |
| { |
| int ret = 0; |
| BY_DIR *ld = (BY_DIR *)ctx->method_data; |
| |
| switch (cmd) { |
| case X509_L_ADD_DIR: |
| if (argl == X509_FILETYPE_DEFAULT) { |
| const char *dir = ossl_safe_getenv(X509_get_default_cert_dir_env()); |
| |
| if (dir) |
| ret = add_cert_dir(ld, dir, X509_FILETYPE_PEM); |
| else |
| ret = add_cert_dir(ld, X509_get_default_cert_dir(), |
| X509_FILETYPE_PEM); |
| if (!ret) { |
| ERR_raise(ERR_LIB_X509, X509_R_LOADING_CERT_DIR); |
| } |
| } else |
| ret = add_cert_dir(ld, argp, (int)argl); |
| break; |
| } |
| return ret; |
| } |
| |
| static int new_dir(X509_LOOKUP *lu) |
| { |
| BY_DIR *a = OPENSSL_malloc(sizeof(*a)); |
| |
| if (a == NULL) { |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| |
| if ((a->buffer = BUF_MEM_new()) == NULL) { |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| a->dirs = NULL; |
| a->lock = CRYPTO_THREAD_lock_new(); |
| if (a->lock == NULL) { |
| BUF_MEM_free(a->buffer); |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| lu->method_data = a; |
| return 1; |
| |
| err: |
| OPENSSL_free(a); |
| return 0; |
| } |
| |
| static void by_dir_hash_free(BY_DIR_HASH *hash) |
| { |
| OPENSSL_free(hash); |
| } |
| |
| static int by_dir_hash_cmp(const BY_DIR_HASH *const *a, |
| const BY_DIR_HASH *const *b) |
| { |
| if ((*a)->hash > (*b)->hash) |
| return 1; |
| if ((*a)->hash < (*b)->hash) |
| return -1; |
| return 0; |
| } |
| |
| static void by_dir_entry_free(BY_DIR_ENTRY *ent) |
| { |
| OPENSSL_free(ent->dir); |
| sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free); |
| OPENSSL_free(ent); |
| } |
| |
| static void free_dir(X509_LOOKUP *lu) |
| { |
| BY_DIR *a = (BY_DIR *)lu->method_data; |
| |
| sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free); |
| BUF_MEM_free(a->buffer); |
| CRYPTO_THREAD_lock_free(a->lock); |
| OPENSSL_free(a); |
| } |
| |
| static int add_cert_dir(BY_DIR *ctx, const char *dir, int type) |
| { |
| int j; |
| size_t len; |
| const char *s, *ss, *p; |
| |
| if (dir == NULL || *dir == '\0') { |
| ERR_raise(ERR_LIB_X509, X509_R_INVALID_DIRECTORY); |
| return 0; |
| } |
| |
| s = dir; |
| p = s; |
| do { |
| if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0')) { |
| BY_DIR_ENTRY *ent; |
| |
| ss = s; |
| s = p + 1; |
| len = p - ss; |
| if (len == 0) |
| continue; |
| for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) { |
| ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j); |
| if (strlen(ent->dir) == len && strncmp(ent->dir, ss, len) == 0) |
| break; |
| } |
| if (j < sk_BY_DIR_ENTRY_num(ctx->dirs)) |
| continue; |
| if (ctx->dirs == NULL) { |
| ctx->dirs = sk_BY_DIR_ENTRY_new_null(); |
| if (!ctx->dirs) { |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| } |
| ent = OPENSSL_malloc(sizeof(*ent)); |
| if (ent == NULL) { |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| ent->dir_type = type; |
| ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp); |
| ent->dir = OPENSSL_strndup(ss, len); |
| if (ent->dir == NULL || ent->hashes == NULL) { |
| by_dir_entry_free(ent); |
| return 0; |
| } |
| if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) { |
| by_dir_entry_free(ent); |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| } |
| } while (*p++ != '\0'); |
| return 1; |
| } |
| |
| static int get_cert_by_subject_ex(X509_LOOKUP *xl, X509_LOOKUP_TYPE type, |
| const X509_NAME *name, X509_OBJECT *ret, |
| OSSL_LIB_CTX *libctx, const char *propq) |
| { |
| BY_DIR *ctx; |
| union { |
| X509 st_x509; |
| X509_CRL crl; |
| } data; |
| int ok = 0; |
| int i, j, k; |
| unsigned long h; |
| BUF_MEM *b = NULL; |
| X509_OBJECT stmp, *tmp; |
| const char *postfix = ""; |
| |
| if (name == NULL) |
| return 0; |
| |
| stmp.type = type; |
| if (type == X509_LU_X509) { |
| data.st_x509.cert_info.subject = (X509_NAME *)name; /* won't modify it */ |
| stmp.data.x509 = &data.st_x509; |
| } else if (type == X509_LU_CRL) { |
| data.crl.crl.issuer = (X509_NAME *)name; /* won't modify it */ |
| stmp.data.crl = &data.crl; |
| postfix = "r"; |
| } else { |
| ERR_raise(ERR_LIB_X509, X509_R_WRONG_LOOKUP_TYPE); |
| goto finish; |
| } |
| |
| if ((b = BUF_MEM_new()) == NULL) { |
| ERR_raise(ERR_LIB_X509, ERR_R_BUF_LIB); |
| goto finish; |
| } |
| |
| ctx = (BY_DIR *)xl->method_data; |
| h = X509_NAME_hash_ex(name, libctx, propq, &i); |
| if (i == 0) |
| goto finish; |
| for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) { |
| BY_DIR_ENTRY *ent; |
| int idx; |
| BY_DIR_HASH htmp, *hent; |
| |
| ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i); |
| j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1; |
| if (!BUF_MEM_grow(b, j)) { |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| goto finish; |
| } |
| if (type == X509_LU_CRL && ent->hashes) { |
| htmp.hash = h; |
| if (!CRYPTO_THREAD_read_lock(ctx->lock)) |
| goto finish; |
| idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp); |
| if (idx >= 0) { |
| hent = sk_BY_DIR_HASH_value(ent->hashes, idx); |
| k = hent->suffix; |
| } else { |
| hent = NULL; |
| k = 0; |
| } |
| CRYPTO_THREAD_unlock(ctx->lock); |
| } else { |
| k = 0; |
| hent = NULL; |
| } |
| for (;;) { |
| char c = '/'; |
| |
| #ifdef OPENSSL_SYS_VMS |
| c = ent->dir[strlen(ent->dir) - 1]; |
| if (c != ':' && c != '>' && c != ']') { |
| /* |
| * If no separator is present, we assume the directory |
| * specifier is a logical name, and add a colon. We really |
| * should use better VMS routines for merging things like |
| * this, but this will do for now... -- Richard Levitte |
| */ |
| c = ':'; |
| } else { |
| c = '\0'; |
| } |
| |
| if (c == '\0') { |
| /* |
| * This is special. When c == '\0', no directory separator |
| * should be added. |
| */ |
| BIO_snprintf(b->data, b->max, |
| "%s%08lx.%s%d", ent->dir, h, postfix, k); |
| } else |
| #endif |
| { |
| BIO_snprintf(b->data, b->max, |
| "%s%c%08lx.%s%d", ent->dir, c, h, postfix, k); |
| } |
| #ifndef OPENSSL_NO_POSIX_IO |
| # ifdef _WIN32 |
| # define stat _stat |
| # endif |
| { |
| struct stat st; |
| if (stat(b->data, &st) < 0) |
| break; |
| } |
| #endif |
| /* found one. */ |
| if (type == X509_LU_X509) { |
| if ((X509_load_cert_file_ex(xl, b->data, ent->dir_type, libctx, |
| propq)) == 0) |
| break; |
| } else if (type == X509_LU_CRL) { |
| if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0) |
| break; |
| } |
| /* else case will caught higher up */ |
| k++; |
| } |
| |
| /* |
| * we have added it to the cache so now pull it out again |
| */ |
| X509_STORE_lock(xl->store_ctx); |
| j = sk_X509_OBJECT_find(xl->store_ctx->objs, &stmp); |
| tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, j); |
| X509_STORE_unlock(xl->store_ctx); |
| |
| /* If a CRL, update the last file suffix added for this */ |
| |
| if (type == X509_LU_CRL) { |
| if (!CRYPTO_THREAD_write_lock(ctx->lock)) |
| goto finish; |
| /* |
| * Look for entry again in case another thread added an entry |
| * first. |
| */ |
| if (hent == NULL) { |
| htmp.hash = h; |
| idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp); |
| hent = sk_BY_DIR_HASH_value(ent->hashes, idx); |
| } |
| if (hent == NULL) { |
| hent = OPENSSL_malloc(sizeof(*hent)); |
| if (hent == NULL) { |
| CRYPTO_THREAD_unlock(ctx->lock); |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| ok = 0; |
| goto finish; |
| } |
| hent->hash = h; |
| hent->suffix = k; |
| if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) { |
| CRYPTO_THREAD_unlock(ctx->lock); |
| OPENSSL_free(hent); |
| ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); |
| ok = 0; |
| goto finish; |
| } |
| } else if (hent->suffix < k) { |
| hent->suffix = k; |
| } |
| |
| CRYPTO_THREAD_unlock(ctx->lock); |
| |
| } |
| |
| if (tmp != NULL) { |
| ok = 1; |
| ret->type = tmp->type; |
| memcpy(&ret->data, &tmp->data, sizeof(ret->data)); |
| |
| /* |
| * Clear any errors that might have been raised processing empty |
| * or malformed files. |
| */ |
| ERR_clear_error(); |
| |
| goto finish; |
| } |
| } |
| finish: |
| BUF_MEM_free(b); |
| return ok; |
| } |
| |
| static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type, |
| const X509_NAME *name, X509_OBJECT *ret) |
| { |
| return get_cert_by_subject_ex(xl, type, name, ret, NULL, NULL); |
| } |
