77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "crypto/openssl_bio_string.h"
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#include <openssl/bio.h>
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#include <string.h>
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namespace crypto {
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namespace {
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int bio_string_write(BIO* bio, const char* data, int len) {
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reinterpret_cast<std::string*>(bio->ptr)->append(data, len);
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return len;
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}
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int bio_string_puts(BIO* bio, const char* data) {
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// Note: unlike puts(), BIO_puts does not add a newline.
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return bio_string_write(bio, data, strlen(data));
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}
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long bio_string_ctrl(BIO* bio, int cmd, long num, void* ptr) {
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std::string* str = reinterpret_cast<std::string*>(bio->ptr);
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switch (cmd) {
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case BIO_CTRL_RESET:
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str->clear();
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return 1;
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case BIO_C_FILE_SEEK:
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return -1;
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case BIO_C_FILE_TELL:
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return str->size();
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case BIO_CTRL_FLUSH:
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return 1;
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default:
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return 0;
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}
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}
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int bio_string_new(BIO* bio) {
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bio->ptr = NULL;
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bio->init = 0;
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return 1;
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}
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int bio_string_free(BIO* bio) {
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// The string is owned by the caller, so there's nothing to do here.
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return bio != NULL;
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}
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BIO_METHOD bio_string_methods = {
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// TODO(mattm): Should add some type number too? (bio.h uses 1-24)
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BIO_TYPE_SOURCE_SINK,
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"bio_string",
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bio_string_write,
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NULL, /* read */
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bio_string_puts,
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NULL, /* gets */
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bio_string_ctrl,
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bio_string_new,
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bio_string_free,
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NULL, /* callback_ctrl */
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};
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} // namespace
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BIO* BIO_new_string(std::string* out) {
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BIO* bio = BIO_new(&bio_string_methods);
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if (!bio)
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return bio;
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bio->ptr = out;
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bio->init = 1;
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return bio;
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}
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} // namespace crypto
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