+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,
+ X509_NAME *name, X509_OBJECT *ret);
+static X509_LOOKUP_METHOD x509_dir_lookup = {
+ "Load certs from files in a directory",
+ new_dir, /* new */
+ 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 */
+};
+
+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;
+ char *dir = NULL;
+
+ ld = (BY_DIR *)ctx->method_data;
+
+ switch (cmd) {
+ case X509_L_ADD_DIR:
+ if (argl == X509_FILETYPE_DEFAULT) {
+ dir = (char *)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) {
+ X509err(X509_F_DIR_CTRL, 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;
+
+ if ((a = OPENSSL_malloc(sizeof(*a))) == NULL)
+ return 0;
+ if ((a->buffer = BUF_MEM_new()) == NULL) {
+ OPENSSL_free(a);
+ return 0;
+ }
+ a->dirs = NULL;
+ a->lock = CRYPTO_THREAD_lock_new();
+ if (a->lock == NULL) {
+ BUF_MEM_free(a->buffer);
+ OPENSSL_free(a);
+ return 0;
+ }
+ lu->method_data = (char *)a;
+ return 1;
+}
+
+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;
+
+ 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)
+{
+ const char *s, *p;
+
+ if (dir == NULL || !*dir) {
+ X509err(X509_F_ADD_CERT_DIR, X509_R_INVALID_DIRECTORY);
+ return 0;
+ }
+
+ s = dir;
+ p = s;
+ do {
+ if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0')) {
+ BY_DIR_ENTRY *ent;
+ int j;
+ size_t len;
+ const char *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) {
+ X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ }
+ ent = OPENSSL_malloc(sizeof(*ent));
+ if (ent == NULL)
+ 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);
+ return 0;
+ }
+ }
+ } while (*p++ != '\0');
+ return 1;
+}
+
+static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type,
+ X509_NAME *name, X509_OBJECT *ret)
+{
+ 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 = name;
+ stmp.data.x509 = &data.st_x509;
+ postfix = "";
+ } else if (type == X509_LU_CRL) {
+ data.crl.crl.issuer = name;
+ stmp.data.crl = &data.crl;
+ postfix = "r";
+ } else {
+ X509err(X509_F_GET_CERT_BY_SUBJECT, X509_R_WRONG_LOOKUP_TYPE);
+ goto finish;
+ }
+
+ if ((b = BUF_MEM_new()) == NULL) {
+ X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_BUF_LIB);
+ goto finish;
+ }
+
+ ctx = (BY_DIR *)xl->method_data;
+
+ h = X509_NAME_hash(name);
+ 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)) {
+ X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
+ goto finish;
+ }
+ if (type == X509_LU_CRL && ent->hashes) {
+ htmp.hash = h;
+ CRYPTO_THREAD_read_lock(ctx->lock);
+ 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';
+ }
+#endif
+ 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 {
+ 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;
+ }