224 lines
5.0 KiB
C
224 lines
5.0 KiB
C
/*
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* Copyright (c) 2006 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "hx_locl.h"
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RCSID("$Id: ks_dir.c 19778 2007-01-09 10:52:13Z lha $");
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#include <dirent.h>
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/*
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* The DIR keyset module is strange compared to the other modules
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* since it does lazy evaluation and really doesn't keep any local
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* state except for the directory iteration and cert iteration of
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* files. DIR ignores most errors so that the consumer doesn't get
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* failes for stray files in directories.
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*/
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struct dircursor {
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DIR *dir;
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hx509_certs certs;
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void *iter;
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};
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/*
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*
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*/
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static int
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dir_init(hx509_context context,
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hx509_certs certs, void **data, int flags,
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const char *residue, hx509_lock lock)
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{
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*data = NULL;
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{
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struct stat sb;
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int ret;
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ret = stat(residue, &sb);
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if (ret == -1) {
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hx509_set_error_string(context, 0, ENOENT,
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"No such file %s", residue);
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return ENOENT;
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}
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if ((sb.st_mode & S_IFDIR) == 0) {
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hx509_set_error_string(context, 0, ENOTDIR,
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"%s is not a directory", residue);
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return ENOTDIR;
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}
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}
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*data = strdup(residue);
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if (*data == NULL) {
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hx509_clear_error_string(context);
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return ENOMEM;
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}
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return 0;
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}
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static int
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dir_free(hx509_certs certs, void *data)
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{
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free(data);
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return 0;
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}
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static int
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dir_iter_start(hx509_context context,
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hx509_certs certs, void *data, void **cursor)
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{
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struct dircursor *d;
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*cursor = NULL;
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d = calloc(1, sizeof(*d));
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if (d == NULL) {
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hx509_clear_error_string(context);
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return ENOMEM;
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}
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d->dir = opendir(data);
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if (d->dir == NULL) {
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hx509_clear_error_string(context);
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free(d);
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return errno;
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}
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d->certs = NULL;
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d->iter = NULL;
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*cursor = d;
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return 0;
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}
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static int
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dir_iter(hx509_context context,
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hx509_certs certs, void *data, void *iter, hx509_cert *cert)
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{
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struct dircursor *d = iter;
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int ret = 0;
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*cert = NULL;
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do {
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struct dirent *dir;
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char *fn;
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if (d->certs) {
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ret = hx509_certs_next_cert(context, d->certs, d->iter, cert);
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if (ret) {
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hx509_certs_end_seq(context, d->certs, d->iter);
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d->iter = NULL;
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hx509_certs_free(&d->certs);
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return ret;
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}
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if (*cert) {
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ret = 0;
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break;
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}
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hx509_certs_end_seq(context, d->certs, d->iter);
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d->iter = NULL;
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hx509_certs_free(&d->certs);
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}
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dir = readdir(d->dir);
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if (dir == NULL) {
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ret = 0;
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break;
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}
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if (strcmp(dir->d_name, ".") == 0 || strcmp(dir->d_name, "..") == 0)
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continue;
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if (asprintf(&fn, "FILE:%s/%s", (char *)data, dir->d_name) == -1)
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return ENOMEM;
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ret = hx509_certs_init(context, fn, 0, NULL, &d->certs);
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if (ret == 0) {
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ret = hx509_certs_start_seq(context, d->certs, &d->iter);
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if (ret)
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hx509_certs_free(&d->certs);
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}
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/* ignore errors */
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if (ret) {
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d->certs = NULL;
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ret = 0;
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}
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free(fn);
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} while(ret == 0);
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return ret;
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}
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static int
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dir_iter_end(hx509_context context,
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hx509_certs certs,
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void *data,
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void *cursor)
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{
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struct dircursor *d = cursor;
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if (d->certs) {
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hx509_certs_end_seq(context, d->certs, d->iter);
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d->iter = NULL;
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hx509_certs_free(&d->certs);
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}
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closedir(d->dir);
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free(d);
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return 0;
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}
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static struct hx509_keyset_ops keyset_dir = {
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"DIR",
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0,
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dir_init,
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NULL,
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dir_free,
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NULL,
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NULL,
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dir_iter_start,
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dir_iter,
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dir_iter_end
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};
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void
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_hx509_ks_dir_register(hx509_context context)
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{
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_hx509_ks_register(context, &keyset_dir);
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}
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