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Simple HTTP client with HTTP/1.1, HTTP/2, and HTTP/3 support
Security advisory:
This version has known vulnerabilities.
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Files
c_src/boringssl/crypto/bio/fd.cc
// Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
//
// Licensed 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
//
// https://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.
#include <openssl/bio.h>
#if !defined(OPENSSL_NO_POSIX_IO)
#include <errno.h>
#include <string.h>
#if !defined(OPENSSL_WINDOWS)
#include <unistd.h>
#else
#include <io.h>
#endif
#include <openssl/err.h>
#include <openssl/mem.h>
#include "internal.h"
#include "../internal.h"
#if defined(OPENSSL_WINDOWS)
#define BORINGSSL_CLOSE _close
#define BORINGSSL_LSEEK _lseek
#define BORINGSSL_READ _read
#define BORINGSSL_WRITE _write
#else
#define BORINGSSL_CLOSE close
#define BORINGSSL_LSEEK lseek
#define BORINGSSL_READ read
#define BORINGSSL_WRITE write
#endif
BIO *BIO_new_fd(int fd, int close_flag) {
BIO *ret = BIO_new(BIO_s_fd());
if (ret == nullptr) {
return nullptr;
}
BIO_set_fd(ret, fd, close_flag);
return ret;
}
static int fd_new(BIO *bio) {
// num is used to store the file descriptor.
bio->num = -1;
return 1;
}
static int fd_free(BIO *bio) {
if (bio->shutdown) {
if (bio->init) {
BORINGSSL_CLOSE(bio->num);
}
bio->init = 0;
}
return 1;
}
static int fd_read(BIO *b, char *out, int outl) {
int ret = 0;
ret = (int)BORINGSSL_READ(b->num, out, outl);
BIO_clear_retry_flags(b);
if (ret <= 0) {
if (bio_errno_should_retry(ret)) {
BIO_set_retry_read(b);
}
}
return ret;
}
static int fd_write(BIO *b, const char *in, int inl) {
int ret = (int)BORINGSSL_WRITE(b->num, in, inl);
BIO_clear_retry_flags(b);
if (ret <= 0) {
if (bio_errno_should_retry(ret)) {
BIO_set_retry_write(b);
}
}
return ret;
}
static long fd_ctrl(BIO *b, int cmd, long num, void *ptr) {
switch (cmd) {
case BIO_CTRL_RESET:
num = 0;
[[fallthrough]];
case BIO_C_FILE_SEEK:
if (b->init) {
return (long)BORINGSSL_LSEEK(b->num, num, SEEK_SET);
}
return 0;
case BIO_C_FILE_TELL:
case BIO_CTRL_INFO:
if (b->init) {
return (long)BORINGSSL_LSEEK(b->num, 0, SEEK_CUR);
}
return 0;
case BIO_C_SET_FD:
fd_free(b);
b->num = *static_cast<int *>(ptr);
b->shutdown = static_cast<int>(num);
b->init = 1;
return 1;
case BIO_C_GET_FD:
if (b->init) {
int *out = static_cast<int *>(ptr);
if (out != nullptr) {
*out = b->num;
}
return b->num;
} else {
return -1;
}
case BIO_CTRL_GET_CLOSE:
return b->shutdown;
case BIO_CTRL_SET_CLOSE:
b->shutdown = static_cast<int>(num);
return 1;
case BIO_CTRL_FLUSH:
return 1;
default:
return 0;
}
}
static int fd_gets(BIO *bp, char *buf, int size) {
if (size <= 0) {
return 0;
}
char *ptr = buf;
char *end = buf + size - 1;
while (ptr < end && fd_read(bp, ptr, 1) > 0) {
char c = ptr[0];
ptr++;
if (c == '\n') {
break;
}
}
ptr[0] = '\0';
// The output length is bounded by |size|.
return (int)(ptr - buf);
}
static const BIO_METHOD methods_fdp = {
BIO_TYPE_FD, "file descriptor", fd_write,
fd_read, fd_gets, fd_ctrl,
fd_new, fd_free, /*callback_ctrl=*/nullptr,
};
const BIO_METHOD *BIO_s_fd(void) { return &methods_fdp; }
#endif // OPENSSL_NO_POSIX_IO
int BIO_set_fd(BIO *bio, int fd, int close_flag) {
return (int)BIO_int_ctrl(bio, BIO_C_SET_FD, close_flag, fd);
}
int BIO_get_fd(BIO *bio, int *out_fd) {
return (int)BIO_ctrl(bio, BIO_C_GET_FD, 0, (char *) out_fd);
}