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-rw-r--r--thirdparty/openssl/crypto/bio/bss_acpt.c463
1 files changed, 463 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/bio/bss_acpt.c b/thirdparty/openssl/crypto/bio/bss_acpt.c
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+++ b/thirdparty/openssl/crypto/bio/bss_acpt.c
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+/* crypto/bio/bss_acpt.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#define USE_SOCKETS
+#include "cryptlib.h"
+#include <openssl/bio.h>
+
+#ifndef OPENSSL_NO_SOCK
+
+# ifdef OPENSSL_SYS_WIN16
+# define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
+# else
+# define SOCKET_PROTOCOL IPPROTO_TCP
+# endif
+
+# if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
+/* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
+# undef FIONBIO
+# endif
+
+typedef struct bio_accept_st {
+ int state;
+ char *param_addr;
+ int accept_sock;
+ int accept_nbio;
+ char *addr;
+ int nbio;
+ /*
+ * If 0, it means normal, if 1, do a connect on bind failure, and if
+ * there is no-one listening, bind with SO_REUSEADDR. If 2, always use
+ * SO_REUSEADDR.
+ */
+ int bind_mode;
+ BIO *bio_chain;
+} BIO_ACCEPT;
+
+static int acpt_write(BIO *h, const char *buf, int num);
+static int acpt_read(BIO *h, char *buf, int size);
+static int acpt_puts(BIO *h, const char *str);
+static long acpt_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int acpt_new(BIO *h);
+static int acpt_free(BIO *data);
+static int acpt_state(BIO *b, BIO_ACCEPT *c);
+static void acpt_close_socket(BIO *data);
+static BIO_ACCEPT *BIO_ACCEPT_new(void);
+static void BIO_ACCEPT_free(BIO_ACCEPT *a);
+
+# define ACPT_S_BEFORE 1
+# define ACPT_S_GET_ACCEPT_SOCKET 2
+# define ACPT_S_OK 3
+
+static BIO_METHOD methods_acceptp = {
+ BIO_TYPE_ACCEPT,
+ "socket accept",
+ acpt_write,
+ acpt_read,
+ acpt_puts,
+ NULL, /* connect_gets, */
+ acpt_ctrl,
+ acpt_new,
+ acpt_free,
+ NULL,
+};
+
+BIO_METHOD *BIO_s_accept(void)
+{
+ return (&methods_acceptp);
+}
+
+static int acpt_new(BIO *bi)
+{
+ BIO_ACCEPT *ba;
+
+ bi->init = 0;
+ bi->num = INVALID_SOCKET;
+ bi->flags = 0;
+ if ((ba = BIO_ACCEPT_new()) == NULL)
+ return (0);
+ bi->ptr = (char *)ba;
+ ba->state = ACPT_S_BEFORE;
+ bi->shutdown = 1;
+ return (1);
+}
+
+static BIO_ACCEPT *BIO_ACCEPT_new(void)
+{
+ BIO_ACCEPT *ret;
+
+ if ((ret = (BIO_ACCEPT *)OPENSSL_malloc(sizeof(BIO_ACCEPT))) == NULL)
+ return (NULL);
+
+ memset(ret, 0, sizeof(BIO_ACCEPT));
+ ret->accept_sock = INVALID_SOCKET;
+ ret->bind_mode = BIO_BIND_NORMAL;
+ return (ret);
+}
+
+static void BIO_ACCEPT_free(BIO_ACCEPT *a)
+{
+ if (a == NULL)
+ return;
+
+ if (a->param_addr != NULL)
+ OPENSSL_free(a->param_addr);
+ if (a->addr != NULL)
+ OPENSSL_free(a->addr);
+ if (a->bio_chain != NULL)
+ BIO_free(a->bio_chain);
+ OPENSSL_free(a);
+}
+
+static void acpt_close_socket(BIO *bio)
+{
+ BIO_ACCEPT *c;
+
+ c = (BIO_ACCEPT *)bio->ptr;
+ if (c->accept_sock != INVALID_SOCKET) {
+ shutdown(c->accept_sock, 2);
+ closesocket(c->accept_sock);
+ c->accept_sock = INVALID_SOCKET;
+ bio->num = INVALID_SOCKET;
+ }
+}
+
+static int acpt_free(BIO *a)
+{
+ BIO_ACCEPT *data;
+
+ if (a == NULL)
+ return (0);
+ data = (BIO_ACCEPT *)a->ptr;
+
+ if (a->shutdown) {
+ acpt_close_socket(a);
+ BIO_ACCEPT_free(data);
+ a->ptr = NULL;
+ a->flags = 0;
+ a->init = 0;
+ }
+ return (1);
+}
+
+static int acpt_state(BIO *b, BIO_ACCEPT *c)
+{
+ BIO *bio = NULL, *dbio;
+ int s = -1;
+ int i;
+
+ again:
+ switch (c->state) {
+ case ACPT_S_BEFORE:
+ if (c->param_addr == NULL) {
+ BIOerr(BIO_F_ACPT_STATE, BIO_R_NO_ACCEPT_PORT_SPECIFIED);
+ return (-1);
+ }
+ s = BIO_get_accept_socket(c->param_addr, c->bind_mode);
+ if (s == INVALID_SOCKET)
+ return (-1);
+
+ if (c->accept_nbio) {
+ if (!BIO_socket_nbio(s, 1)) {
+ closesocket(s);
+ BIOerr(BIO_F_ACPT_STATE,
+ BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
+ return (-1);
+ }
+ }
+ c->accept_sock = s;
+ b->num = s;
+ c->state = ACPT_S_GET_ACCEPT_SOCKET;
+ return (1);
+ /* break; */
+ case ACPT_S_GET_ACCEPT_SOCKET:
+ if (b->next_bio != NULL) {
+ c->state = ACPT_S_OK;
+ goto again;
+ }
+ BIO_clear_retry_flags(b);
+ b->retry_reason = 0;
+ i = BIO_accept(c->accept_sock, &(c->addr));
+
+ /* -2 return means we should retry */
+ if (i == -2) {
+ BIO_set_retry_special(b);
+ b->retry_reason = BIO_RR_ACCEPT;
+ return -1;
+ }
+
+ if (i < 0)
+ return (i);
+
+ bio = BIO_new_socket(i, BIO_CLOSE);
+ if (bio == NULL)
+ goto err;
+
+ BIO_set_callback(bio, BIO_get_callback(b));
+ BIO_set_callback_arg(bio, BIO_get_callback_arg(b));
+
+ if (c->nbio) {
+ if (!BIO_socket_nbio(i, 1)) {
+ BIOerr(BIO_F_ACPT_STATE,
+ BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
+ goto err;
+ }
+ }
+
+ /*
+ * If the accept BIO has an bio_chain, we dup it and put the new
+ * socket at the end.
+ */
+ if (c->bio_chain != NULL) {
+ if ((dbio = BIO_dup_chain(c->bio_chain)) == NULL)
+ goto err;
+ if (!BIO_push(dbio, bio))
+ goto err;
+ bio = dbio;
+ }
+ if (BIO_push(b, bio) == NULL)
+ goto err;
+
+ c->state = ACPT_S_OK;
+ return (1);
+ err:
+ if (bio != NULL)
+ BIO_free(bio);
+ else if (s >= 0)
+ closesocket(s);
+ return (0);
+ /* break; */
+ case ACPT_S_OK:
+ if (b->next_bio == NULL) {
+ c->state = ACPT_S_GET_ACCEPT_SOCKET;
+ goto again;
+ }
+ return (1);
+ /* break; */
+ default:
+ return (0);
+ /* break; */
+ }
+
+}
+
+static int acpt_read(BIO *b, char *out, int outl)
+{
+ int ret = 0;
+ BIO_ACCEPT *data;
+
+ BIO_clear_retry_flags(b);
+ data = (BIO_ACCEPT *)b->ptr;
+
+ while (b->next_bio == NULL) {
+ ret = acpt_state(b, data);
+ if (ret <= 0)
+ return (ret);
+ }
+
+ ret = BIO_read(b->next_bio, out, outl);
+ BIO_copy_next_retry(b);
+ return (ret);
+}
+
+static int acpt_write(BIO *b, const char *in, int inl)
+{
+ int ret;
+ BIO_ACCEPT *data;
+
+ BIO_clear_retry_flags(b);
+ data = (BIO_ACCEPT *)b->ptr;
+
+ while (b->next_bio == NULL) {
+ ret = acpt_state(b, data);
+ if (ret <= 0)
+ return (ret);
+ }
+
+ ret = BIO_write(b->next_bio, in, inl);
+ BIO_copy_next_retry(b);
+ return (ret);
+}
+
+static long acpt_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+ int *ip;
+ long ret = 1;
+ BIO_ACCEPT *data;
+ char **pp;
+
+ data = (BIO_ACCEPT *)b->ptr;
+
+ switch (cmd) {
+ case BIO_CTRL_RESET:
+ ret = 0;
+ data->state = ACPT_S_BEFORE;
+ acpt_close_socket(b);
+ b->flags = 0;
+ break;
+ case BIO_C_DO_STATE_MACHINE:
+ /* use this one to start the connection */
+ ret = (long)acpt_state(b, data);
+ break;
+ case BIO_C_SET_ACCEPT:
+ if (ptr != NULL) {
+ if (num == 0) {
+ b->init = 1;
+ if (data->param_addr != NULL)
+ OPENSSL_free(data->param_addr);
+ data->param_addr = BUF_strdup(ptr);
+ } else if (num == 1) {
+ data->accept_nbio = (ptr != NULL);
+ } else if (num == 2) {
+ if (data->bio_chain != NULL)
+ BIO_free(data->bio_chain);
+ data->bio_chain = (BIO *)ptr;
+ }
+ }
+ break;
+ case BIO_C_SET_NBIO:
+ data->nbio = (int)num;
+ break;
+ case BIO_C_SET_FD:
+ b->init = 1;
+ b->num = *((int *)ptr);
+ data->accept_sock = b->num;
+ data->state = ACPT_S_GET_ACCEPT_SOCKET;
+ b->shutdown = (int)num;
+ b->init = 1;
+ break;
+ case BIO_C_GET_FD:
+ if (b->init) {
+ ip = (int *)ptr;
+ if (ip != NULL)
+ *ip = data->accept_sock;
+ ret = data->accept_sock;
+ } else
+ ret = -1;
+ break;
+ case BIO_C_GET_ACCEPT:
+ if (b->init) {
+ if (ptr != NULL) {
+ pp = (char **)ptr;
+ *pp = data->param_addr;
+ } else
+ ret = -1;
+ } 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_FLUSH:
+ break;
+ case BIO_C_SET_BIND_MODE:
+ data->bind_mode = (int)num;
+ break;
+ case BIO_C_GET_BIND_MODE:
+ ret = (long)data->bind_mode;
+ break;
+ case BIO_CTRL_DUP:
+/*- dbio=(BIO *)ptr;
+ if (data->param_port) EAY EAY
+ BIO_set_port(dbio,data->param_port);
+ if (data->param_hostname)
+ BIO_set_hostname(dbio,data->param_hostname);
+ BIO_set_nbio(dbio,data->nbio); */
+ break;
+
+ default:
+ ret = 0;
+ break;
+ }
+ return (ret);
+}
+
+static int acpt_puts(BIO *bp, const char *str)
+{
+ int n, ret;
+
+ n = strlen(str);
+ ret = acpt_write(bp, str, n);
+ return (ret);
+}
+
+BIO *BIO_new_accept(const char *str)
+{
+ BIO *ret;
+
+ ret = BIO_new(BIO_s_accept());
+ if (ret == NULL)
+ return (NULL);
+ if (BIO_set_accept_port(ret, str))
+ return (ret);
+ else {
+ BIO_free(ret);
+ return (NULL);
+ }
+}
+
+#endif
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