Upgrade openssl from 1.1.0e to 1.1.1b, with source code. 4.0.78

trunk/3rdparty/openssl-1.1-fit/crypto/bio/bio_lib.c

@@ -0,0 +1,786 @@
+/*
+ * Copyright 1995-2018 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 <openssl/crypto.h>
+#include "bio_lcl.h"
+#include "internal/cryptlib.h"
+
+
+/*
+ * Helper macro for the callback to determine whether an operator expects a
+ * len parameter or not
+ */
+#define HAS_LEN_OPER(o)        ((o) == BIO_CB_READ || (o) == BIO_CB_WRITE || \
+                                (o) == BIO_CB_GETS)
+
+/*
+ * Helper function to work out whether to call the new style callback or the old
+ * one, and translate between the two.
+ *
+ * This has a long return type for consistency with the old callback. Similarly
+ * for the "long" used for "inret"
+ */
+static long bio_call_callback(BIO *b, int oper, const char *argp, size_t len,
+                              int argi, long argl, long inret, size_t *processed)
+{
+    long ret;
+    int bareoper;
+
+    if (b->callback_ex != NULL)
+        return b->callback_ex(b, oper, argp, len, argi, argl, inret, processed);
+
+    /* Strip off any BIO_CB_RETURN flag */
+    bareoper = oper & ~BIO_CB_RETURN;
+
+    /*
+     * We have an old style callback, so we will have to do nasty casts and
+     * check for overflows.
+     */
+    if (HAS_LEN_OPER(bareoper)) {
+        /* In this case |len| is set, and should be used instead of |argi| */
+        if (len > INT_MAX)
+            return -1;
+
+        argi = (int)len;
+    }
+
+    if (inret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) {
+        if (*processed > INT_MAX)
+            return -1;
+        inret = *processed;
+    }
+
+    ret = b->callback(b, oper, argp, argi, argl, inret);
+
+    if (ret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) {
+        *processed = (size_t)ret;
+        ret = 1;
+    }
+
+    return ret;
+}
+
+BIO *BIO_new(const BIO_METHOD *method)
+{
+    BIO *bio = OPENSSL_zalloc(sizeof(*bio));
+
+    if (bio == NULL) {
+        BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    bio->method = method;
+    bio->shutdown = 1;
+    bio->references = 1;
+
+    if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data))
+        goto err;
+
+    bio->lock = CRYPTO_THREAD_lock_new();
+    if (bio->lock == NULL) {
+        BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE);
+        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
+        goto err;
+    }
+
+    if (method->create != NULL && !method->create(bio)) {
+        BIOerr(BIO_F_BIO_NEW, ERR_R_INIT_FAIL);
+        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
+        CRYPTO_THREAD_lock_free(bio->lock);
+        goto err;
+    }
+    if (method->create == NULL)
+        bio->init = 1;
+
+    return bio;
+
+err:
+    OPENSSL_free(bio);
+    return NULL;
+}
+
+int BIO_free(BIO *a)
+{
+    int ret;
+
+    if (a == NULL)
+        return 0;
+
+    if (CRYPTO_DOWN_REF(&a->references, &ret, a->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("BIO", a);
+    if (ret > 0)
+        return 1;
+    REF_ASSERT_ISNT(ret < 0);
+
+    if (a->callback != NULL || a->callback_ex != NULL) {
+        ret = (int)bio_call_callback(a, BIO_CB_FREE, NULL, 0, 0, 0L, 1L, NULL);
+        if (ret <= 0)
+            return ret;
+    }
+
+    if ((a->method != NULL) && (a->method->destroy != NULL))
+        a->method->destroy(a);
+
+    CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data);
+
+    CRYPTO_THREAD_lock_free(a->lock);
+
+    OPENSSL_free(a);
+
+    return 1;
+}
+
+void BIO_set_data(BIO *a, void *ptr)
+{
+    a->ptr = ptr;
+}
+
+void *BIO_get_data(BIO *a)
+{
+    return a->ptr;
+}
+
+void BIO_set_init(BIO *a, int init)
+{
+    a->init = init;
+}
+
+int BIO_get_init(BIO *a)
+{
+    return a->init;
+}
+
+void BIO_set_shutdown(BIO *a, int shut)
+{
+    a->shutdown = shut;
+}
+
+int BIO_get_shutdown(BIO *a)
+{
+    return a->shutdown;
+}
+
+void BIO_vfree(BIO *a)
+{
+    BIO_free(a);
+}
+
+int BIO_up_ref(BIO *a)
+{
+    int i;
+
+    if (CRYPTO_UP_REF(&a->references, &i, a->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("BIO", a);
+    REF_ASSERT_ISNT(i < 2);
+    return ((i > 1) ? 1 : 0);
+}
+
+void BIO_clear_flags(BIO *b, int flags)
+{
+    b->flags &= ~flags;
+}
+
+int BIO_test_flags(const BIO *b, int flags)
+{
+    return (b->flags & flags);
+}
+
+void BIO_set_flags(BIO *b, int flags)
+{
+    b->flags |= flags;
+}
+
+BIO_callback_fn BIO_get_callback(const BIO *b)
+{
+    return b->callback;
+}
+
+void BIO_set_callback(BIO *b, BIO_callback_fn cb)
+{
+    b->callback = cb;
+}
+
+BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b)
+{
+    return b->callback_ex;
+}
+
+void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex cb)
+{
+    b->callback_ex = cb;
+}
+
+void BIO_set_callback_arg(BIO *b, char *arg)
+{
+    b->cb_arg = arg;
+}
+
+char *BIO_get_callback_arg(const BIO *b)
+{
+    return b->cb_arg;
+}
+
+const char *BIO_method_name(const BIO *b)
+{
+    return b->method->name;
+}
+
+int BIO_method_type(const BIO *b)
+{
+    return b->method->type;
+}
+
+/*
+ * This is essentially the same as BIO_read_ex() except that it allows
+ * 0 or a negative value to indicate failure (retryable or not) in the return.
+ * This is for compatibility with the old style BIO_read(), where existing code
+ * may make assumptions about the return value that it might get.
+ */
+static int bio_read_intern(BIO *b, void *data, size_t dlen, size_t *readbytes)
+{
+    int ret;
+
+    if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) {
+        BIOerr(BIO_F_BIO_READ_INTERN, BIO_R_UNSUPPORTED_METHOD);
+        return -2;
+    }
+
+    if ((b->callback != NULL || b->callback_ex != NULL) &&
+        ((ret = (int)bio_call_callback(b, BIO_CB_READ, data, dlen, 0, 0L, 1L,
+                                       NULL)) <= 0))
+        return ret;
+
+    if (!b->init) {
+        BIOerr(BIO_F_BIO_READ_INTERN, BIO_R_UNINITIALIZED);
+        return -2;
+    }
+
+    ret = b->method->bread(b, data, dlen, readbytes);
+
+    if (ret > 0)
+        b->num_read += (uint64_t)*readbytes;
+
+    if (b->callback != NULL || b->callback_ex != NULL)
+        ret = (int)bio_call_callback(b, BIO_CB_READ | BIO_CB_RETURN, data,
+                                     dlen, 0, 0L, ret, readbytes);
+
+    /* Shouldn't happen */
+    if (ret > 0 && *readbytes > dlen) {
+        BIOerr(BIO_F_BIO_READ_INTERN, ERR_R_INTERNAL_ERROR);
+        return -1;
+    }
+
+    return ret;
+}
+
+int BIO_read(BIO *b, void *data, int dlen)
+{
+    size_t readbytes;
+    int ret;
+
+    if (dlen < 0)
+        return 0;
+
+    ret = bio_read_intern(b, data, (size_t)dlen, &readbytes);
+
+    if (ret > 0) {
+        /* *readbytes should always be <= dlen */
+        ret = (int)readbytes;
+    }
+
+    return ret;
+}
+
+int BIO_read_ex(BIO *b, void *data, size_t dlen, size_t *readbytes)
+{
+    int ret;
+
+    ret = bio_read_intern(b, data, dlen, readbytes);
+
+    if (ret > 0)
+        ret = 1;
+    else
+        ret = 0;
+
+    return ret;
+}
+
+static int bio_write_intern(BIO *b, const void *data, size_t dlen,
+                            size_t *written)
+{
+    int ret;
+
+    if (b == NULL)
+        return 0;
+
+    if ((b->method == NULL) || (b->method->bwrite == NULL)) {
+        BIOerr(BIO_F_BIO_WRITE_INTERN, BIO_R_UNSUPPORTED_METHOD);
+        return -2;
+    }
+
+    if ((b->callback != NULL || b->callback_ex != NULL) &&
+        ((ret = (int)bio_call_callback(b, BIO_CB_WRITE, data, dlen, 0, 0L, 1L,
+                                       NULL)) <= 0))
+        return ret;
+
+    if (!b->init) {
+        BIOerr(BIO_F_BIO_WRITE_INTERN, BIO_R_UNINITIALIZED);
+        return -2;
+    }
+
+    ret = b->method->bwrite(b, data, dlen, written);
+
+    if (ret > 0)
+        b->num_write += (uint64_t)*written;
+
+    if (b->callback != NULL || b->callback_ex != NULL)
+        ret = (int)bio_call_callback(b, BIO_CB_WRITE | BIO_CB_RETURN, data,
+                                     dlen, 0, 0L, ret, written);
+
+    return ret;
+}
+
+int BIO_write(BIO *b, const void *data, int dlen)
+{
+    size_t written;
+    int ret;
+
+    if (dlen < 0)
+        return 0;
+
+    ret = bio_write_intern(b, data, (size_t)dlen, &written);
+
+    if (ret > 0) {
+        /* *written should always be <= dlen */
+        ret = (int)written;
+    }
+
+    return ret;
+}
+
+int BIO_write_ex(BIO *b, const void *data, size_t dlen, size_t *written)
+{
+    int ret;
+
+    ret = bio_write_intern(b, data, dlen, written);
+
+    if (ret > 0)
+        ret = 1;
+    else
+        ret = 0;
+
+    return ret;
+}
+
+int BIO_puts(BIO *b, const char *buf)
+{
+    int ret;
+    size_t written = 0;
+
+    if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) {
+        BIOerr(BIO_F_BIO_PUTS, BIO_R_UNSUPPORTED_METHOD);
+        return -2;
+    }
+
+    if (b->callback != NULL || b->callback_ex != NULL) {
+        ret = (int)bio_call_callback(b, BIO_CB_PUTS, buf, 0, 0, 0L, 1L, NULL);
+        if (ret <= 0)
+            return ret;
+    }
+
+    if (!b->init) {
+        BIOerr(BIO_F_BIO_PUTS, BIO_R_UNINITIALIZED);
+        return -2;
+    }
+
+    ret = b->method->bputs(b, buf);
+
+    if (ret > 0) {
+        b->num_write += (uint64_t)ret;
+        written = ret;
+        ret = 1;
+    }
+
+    if (b->callback != NULL || b->callback_ex != NULL)
+        ret = (int)bio_call_callback(b, BIO_CB_PUTS | BIO_CB_RETURN, buf, 0, 0,
+                                     0L, ret, &written);
+
+    if (ret > 0) {
+        if (written > INT_MAX) {
+            BIOerr(BIO_F_BIO_PUTS, BIO_R_LENGTH_TOO_LONG);
+            ret = -1;
+        } else {
+            ret = (int)written;
+        }
+    }
+
+    return ret;
+}
+
+int BIO_gets(BIO *b, char *buf, int size)
+{
+    int ret;
+    size_t readbytes = 0;
+
+    if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) {
+        BIOerr(BIO_F_BIO_GETS, BIO_R_UNSUPPORTED_METHOD);
+        return -2;
+    }
+
+    if (size < 0) {
+        BIOerr(BIO_F_BIO_GETS, BIO_R_INVALID_ARGUMENT);
+        return 0;
+    }
+
+    if (b->callback != NULL || b->callback_ex != NULL) {
+        ret = (int)bio_call_callback(b, BIO_CB_GETS, buf, size, 0, 0L, 1, NULL);
+        if (ret <= 0)
+            return ret;
+    }
+
+    if (!b->init) {
+        BIOerr(BIO_F_BIO_GETS, BIO_R_UNINITIALIZED);
+        return -2;
+    }
+
+    ret = b->method->bgets(b, buf, size);
+
+    if (ret > 0) {
+        readbytes = ret;
+        ret = 1;
+    }
+
+    if (b->callback != NULL || b->callback_ex != NULL)
+        ret = (int)bio_call_callback(b, BIO_CB_GETS | BIO_CB_RETURN, buf, size,
+                                     0, 0L, ret, &readbytes);
+
+    if (ret > 0) {
+        /* Shouldn't happen */
+        if (readbytes > (size_t)size)
+            ret = -1;
+        else
+            ret = (int)readbytes;
+    }
+
+    return ret;
+}
+
+int BIO_indent(BIO *b, int indent, int max)
+{
+    if (indent < 0)
+        indent = 0;
+    if (indent > max)
+        indent = max;
+    while (indent--)
+        if (BIO_puts(b, " ") != 1)
+            return 0;
+    return 1;
+}
+
+long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg)
+{
+    int i;
+
+    i = iarg;
+    return BIO_ctrl(b, cmd, larg, (char *)&i);
+}
+
+void *BIO_ptr_ctrl(BIO *b, int cmd, long larg)
+{
+    void *p = NULL;
+
+    if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0)
+        return NULL;
+    else
+        return p;
+}
+
+long BIO_ctrl(BIO *b, int cmd, long larg, void *parg)
+{
+    long ret;
+
+    if (b == NULL)
+        return 0;
+
+    if ((b->method == NULL) || (b->method->ctrl == NULL)) {
+        BIOerr(BIO_F_BIO_CTRL, BIO_R_UNSUPPORTED_METHOD);
+        return -2;
+    }
+
+    if (b->callback != NULL || b->callback_ex != NULL) {
+        ret = bio_call_callback(b, BIO_CB_CTRL, parg, 0, cmd, larg, 1L, NULL);
+        if (ret <= 0)
+            return ret;
+    }
+
+    ret = b->method->ctrl(b, cmd, larg, parg);
+
+    if (b->callback != NULL || b->callback_ex != NULL)
+        ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, 0, cmd,
+                                larg, ret, NULL);
+
+    return ret;
+}
+
+long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
+{
+    long ret;
+
+    if (b == NULL)
+        return 0;
+
+    if ((b->method == NULL) || (b->method->callback_ctrl == NULL)
+            || (cmd != BIO_CTRL_SET_CALLBACK)) {
+        BIOerr(BIO_F_BIO_CALLBACK_CTRL, BIO_R_UNSUPPORTED_METHOD);
+        return -2;
+    }
+
+    if (b->callback != NULL || b->callback_ex != NULL) {
+        ret = bio_call_callback(b, BIO_CB_CTRL, (void *)&fp, 0, cmd, 0, 1L,
+                                NULL);
+        if (ret <= 0)
+            return ret;
+    }
+
+    ret = b->method->callback_ctrl(b, cmd, fp);
+
+    if (b->callback != NULL || b->callback_ex != NULL)
+        ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, 0,
+                                cmd, 0, ret, NULL);
+
+    return ret;
+}
+
+/*
+ * It is unfortunate to duplicate in functions what the BIO_(w)pending macros
+ * do; but those macros have inappropriate return type, and for interfacing
+ * from other programming languages, C macros aren't much of a help anyway.
+ */
+size_t BIO_ctrl_pending(BIO *bio)
+{
+    return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL);
+}
+
+size_t BIO_ctrl_wpending(BIO *bio)
+{
+    return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL);
+}
+
+/* put the 'bio' on the end of b's list of operators */
+BIO *BIO_push(BIO *b, BIO *bio)
+{
+    BIO *lb;
+
+    if (b == NULL)
+        return bio;
+    lb = b;
+    while (lb->next_bio != NULL)
+        lb = lb->next_bio;
+    lb->next_bio = bio;
+    if (bio != NULL)
+        bio->prev_bio = lb;
+    /* called to do internal processing */
+    BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb);
+    return b;
+}
+
+/* Remove the first and return the rest */
+BIO *BIO_pop(BIO *b)
+{
+    BIO *ret;
+
+    if (b == NULL)
+        return NULL;
+    ret = b->next_bio;
+
+    BIO_ctrl(b, BIO_CTRL_POP, 0, b);
+
+    if (b->prev_bio != NULL)
+        b->prev_bio->next_bio = b->next_bio;
+    if (b->next_bio != NULL)
+        b->next_bio->prev_bio = b->prev_bio;
+
+    b->next_bio = NULL;
+    b->prev_bio = NULL;
+    return ret;
+}
+
+BIO *BIO_get_retry_BIO(BIO *bio, int *reason)
+{
+    BIO *b, *last;
+
+    b = last = bio;
+    for (;;) {
+        if (!BIO_should_retry(b))
+            break;
+        last = b;
+        b = b->next_bio;
+        if (b == NULL)
+            break;
+    }
+    if (reason != NULL)
+        *reason = last->retry_reason;
+    return last;
+}
+
+int BIO_get_retry_reason(BIO *bio)
+{
+    return bio->retry_reason;
+}
+
+void BIO_set_retry_reason(BIO *bio, int reason)
+{
+    bio->retry_reason = reason;
+}
+
+BIO *BIO_find_type(BIO *bio, int type)
+{
+    int mt, mask;
+
+    if (bio == NULL)
+        return NULL;
+    mask = type & 0xff;
+    do {
+        if (bio->method != NULL) {
+            mt = bio->method->type;
+
+            if (!mask) {
+                if (mt & type)
+                    return bio;
+            } else if (mt == type)
+                return bio;
+        }
+        bio = bio->next_bio;
+    } while (bio != NULL);
+    return NULL;
+}
+
+BIO *BIO_next(BIO *b)
+{
+    if (b == NULL)
+        return NULL;
+    return b->next_bio;
+}
+
+void BIO_set_next(BIO *b, BIO *next)
+{
+    b->next_bio = next;
+}
+
+void BIO_free_all(BIO *bio)
+{
+    BIO *b;
+    int ref;
+
+    while (bio != NULL) {
+        b = bio;
+        ref = b->references;
+        bio = bio->next_bio;
+        BIO_free(b);
+        /* Since ref count > 1, don't free anyone else. */
+        if (ref > 1)
+            break;
+    }
+}
+
+BIO *BIO_dup_chain(BIO *in)
+{
+    BIO *ret = NULL, *eoc = NULL, *bio, *new_bio;
+
+    for (bio = in; bio != NULL; bio = bio->next_bio) {
+        if ((new_bio = BIO_new(bio->method)) == NULL)
+            goto err;
+        new_bio->callback = bio->callback;
+        new_bio->callback_ex = bio->callback_ex;
+        new_bio->cb_arg = bio->cb_arg;
+        new_bio->init = bio->init;
+        new_bio->shutdown = bio->shutdown;
+        new_bio->flags = bio->flags;
+
+        /* This will let SSL_s_sock() work with stdin/stdout */
+        new_bio->num = bio->num;
+
+        if (!BIO_dup_state(bio, (char *)new_bio)) {
+            BIO_free(new_bio);
+            goto err;
+        }
+
+        /* copy app data */
+        if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new_bio->ex_data,
+                                &bio->ex_data)) {
+            BIO_free(new_bio);
+            goto err;
+        }
+
+        if (ret == NULL) {
+            eoc = new_bio;
+            ret = eoc;
+        } else {
+            BIO_push(eoc, new_bio);
+            eoc = new_bio;
+        }
+    }
+    return ret;
+ err:
+    BIO_free_all(ret);
+
+    return NULL;
+}
+
+void BIO_copy_next_retry(BIO *b)
+{
+    BIO_set_flags(b, BIO_get_retry_flags(b->next_bio));
+    b->retry_reason = b->next_bio->retry_reason;
+}
+
+int BIO_set_ex_data(BIO *bio, int idx, void *data)
+{
+    return CRYPTO_set_ex_data(&(bio->ex_data), idx, data);
+}
+
+void *BIO_get_ex_data(BIO *bio, int idx)
+{
+    return CRYPTO_get_ex_data(&(bio->ex_data), idx);
+}
+
+uint64_t BIO_number_read(BIO *bio)
+{
+    if (bio)
+        return bio->num_read;
+    return 0;
+}
+
+uint64_t BIO_number_written(BIO *bio)
+{
+    if (bio)
+        return bio->num_write;
+    return 0;
+}
+
+void bio_free_ex_data(BIO *bio)
+{
+    CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
+}
+
+void bio_cleanup(void)
+{
+#ifndef OPENSSL_NO_SOCK
+    bio_sock_cleanup_int();
+    CRYPTO_THREAD_lock_free(bio_lookup_lock);
+    bio_lookup_lock = NULL;
+#endif
+    CRYPTO_THREAD_lock_free(bio_type_lock);
+    bio_type_lock = NULL;
+}