zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bss_fd.c b/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bss_fd.c
new file mode 100644
index 0000000..ccbe162
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bss_fd.c
@@ -0,0 +1,285 @@
+/*
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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
+ */
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "bio_local.h"
+
+#if defined(OPENSSL_NO_POSIX_IO)
+/*
+ * Dummy placeholder for BIO_s_fd...
+ */
+BIO *BIO_new_fd(int fd, int close_flag)
+{
+ return NULL;
+}
+
+int BIO_fd_non_fatal_error(int err)
+{
+ return 0;
+}
+
+int BIO_fd_should_retry(int i)
+{
+ return 0;
+}
+
+const BIO_METHOD *BIO_s_fd(void)
+{
+ return NULL;
+}
+#else
+/*
+ * As for unconditional usage of "UPLINK" interface in this module.
+ * Trouble is that unlike Unix file descriptors [which are indexes
+ * in kernel-side per-process table], corresponding descriptors on
+ * platforms which require "UPLINK" interface seem to be indexes
+ * in a user-land, non-global table. Well, in fact they are indexes
+ * in stdio _iob[], and recall that _iob[] was the very reason why
+ * "UPLINK" interface was introduced in first place. But one way on
+ * another. Neither libcrypto or libssl use this BIO meaning that
+ * file descriptors can only be provided by application. Therefore
+ * "UPLINK" calls are due...
+ */
+static int fd_write(BIO *h, const char *buf, int num);
+static int fd_read(BIO *h, char *buf, int size);
+static int fd_puts(BIO *h, const char *str);
+static int fd_gets(BIO *h, char *buf, int size);
+static long fd_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int fd_new(BIO *h);
+static int fd_free(BIO *data);
+int BIO_fd_should_retry(int s);
+
+static const BIO_METHOD methods_fdp = {
+ BIO_TYPE_FD,
+ "file descriptor",
+ /* TODO: Convert to new style write function */
+ bwrite_conv,
+ fd_write,
+ /* TODO: Convert to new style read function */
+ bread_conv,
+ fd_read,
+ fd_puts,
+ fd_gets,
+ fd_ctrl,
+ fd_new,
+ fd_free,
+ NULL, /* fd_callback_ctrl */
+};
+
+const BIO_METHOD *BIO_s_fd(void)
+{
+ return &methods_fdp;
+}
+
+BIO *BIO_new_fd(int fd, int close_flag)
+{
+ BIO *ret;
+ ret = BIO_new(BIO_s_fd());
+ if (ret == NULL)
+ return NULL;
+ BIO_set_fd(ret, fd, close_flag);
+ return ret;
+}
+
+static int fd_new(BIO *bi)
+{
+ bi->init = 0;
+ bi->num = -1;
+ bi->ptr = NULL;
+ bi->flags = BIO_FLAGS_UPLINK; /* essentially redundant */
+ return 1;
+}
+
+static int fd_free(BIO *a)
+{
+ if (a == NULL)
+ return 0;
+ if (a->shutdown) {
+ if (a->init) {
+ UP_close(a->num);
+ }
+ a->init = 0;
+ a->flags = BIO_FLAGS_UPLINK;
+ }
+ return 1;
+}
+
+static int fd_read(BIO *b, char *out, int outl)
+{
+ int ret = 0;
+
+ if (out != NULL) {
+ clear_sys_error();
+ ret = UP_read(b->num, out, outl);
+ BIO_clear_retry_flags(b);
+ if (ret <= 0) {
+ if (BIO_fd_should_retry(ret))
+ BIO_set_retry_read(b);
+ else if (ret == 0)
+ b->flags |= BIO_FLAGS_IN_EOF;
+ }
+ }
+ return ret;
+}
+
+static int fd_write(BIO *b, const char *in, int inl)
+{
+ int ret;
+ clear_sys_error();
+ ret = UP_write(b->num, in, inl);
+ BIO_clear_retry_flags(b);
+ if (ret <= 0) {
+ if (BIO_fd_should_retry(ret))
+ BIO_set_retry_write(b);
+ }
+ return ret;
+}
+
+static long fd_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+ long ret = 1;
+ int *ip;
+
+ switch (cmd) {
+ case BIO_CTRL_RESET:
+ num = 0;
+ /* fall thru */
+ case BIO_C_FILE_SEEK:
+ ret = (long)UP_lseek(b->num, num, 0);
+ break;
+ case BIO_C_FILE_TELL:
+ case BIO_CTRL_INFO:
+ ret = (long)UP_lseek(b->num, 0, 1);
+ break;
+ case BIO_C_SET_FD:
+ fd_free(b);
+ b->num = *((int *)ptr);
+ b->shutdown = (int)num;
+ b->init = 1;
+ break;
+ case BIO_C_GET_FD:
+ if (b->init) {
+ ip = (int *)ptr;
+ if (ip != NULL)
+ *ip = b->num;
+ ret = b->num;
+ } else
+ ret = -1;
+ break;
+ case BIO_CTRL_GET_CLOSE:
+ ret = b->shutdown;
+ break;
+ case BIO_CTRL_SET_CLOSE:
+ b->shutdown = (int)num;
+ break;
+ case BIO_CTRL_PENDING:
+ case BIO_CTRL_WPENDING:
+ ret = 0;
+ break;
+ case BIO_CTRL_DUP:
+ case BIO_CTRL_FLUSH:
+ ret = 1;
+ break;
+ case BIO_CTRL_EOF:
+ ret = (b->flags & BIO_FLAGS_IN_EOF) != 0 ? 1 : 0;
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+ return ret;
+}
+
+static int fd_puts(BIO *bp, const char *str)
+{
+ int n, ret;
+
+ n = strlen(str);
+ ret = fd_write(bp, str, n);
+ return ret;
+}
+
+static int fd_gets(BIO *bp, char *buf, int size)
+{
+ int ret = 0;
+ char *ptr = buf;
+ char *end = buf + size - 1;
+
+ while (ptr < end && fd_read(bp, ptr, 1) > 0) {
+ if (*ptr++ == '\n')
+ break;
+ }
+
+ ptr[0] = '\0';
+
+ if (buf[0] != '\0')
+ ret = strlen(buf);
+ return ret;
+}
+
+int BIO_fd_should_retry(int i)
+{
+ int err;
+
+ if ((i == 0) || (i == -1)) {
+ err = get_last_sys_error();
+
+ return BIO_fd_non_fatal_error(err);
+ }
+ return 0;
+}
+
+int BIO_fd_non_fatal_error(int err)
+{
+ switch (err) {
+
+# ifdef EWOULDBLOCK
+# ifdef WSAEWOULDBLOCK
+# if WSAEWOULDBLOCK != EWOULDBLOCK
+ case EWOULDBLOCK:
+# endif
+# else
+ case EWOULDBLOCK:
+# endif
+# endif
+
+# if defined(ENOTCONN)
+ case ENOTCONN:
+# endif
+
+# ifdef EINTR
+ case EINTR:
+# endif
+
+# ifdef EAGAIN
+# if EWOULDBLOCK != EAGAIN
+ case EAGAIN:
+# endif
+# endif
+
+# ifdef EPROTO
+ case EPROTO:
+# endif
+
+# ifdef EINPROGRESS
+ case EINPROGRESS:
+# endif
+
+# ifdef EALREADY
+ case EALREADY:
+# endif
+ return 1;
+ default:
+ break;
+ }
+ return 0;
+}
+#endif