From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Fri, 30 Apr 2021 00:33:56 +0200 Subject: initial/final commit --- openssl-1.1.0h/apps/s_socket.c | 250 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 250 insertions(+) create mode 100644 openssl-1.1.0h/apps/s_socket.c (limited to 'openssl-1.1.0h/apps/s_socket.c') diff --git a/openssl-1.1.0h/apps/s_socket.c b/openssl-1.1.0h/apps/s_socket.c new file mode 100644 index 0000000..458aa86 --- /dev/null +++ b/openssl-1.1.0h/apps/s_socket.c @@ -0,0 +1,250 @@ +/* + * 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 + */ + +/* socket-related functions used by s_client and s_server */ +#include +#include +#include +#include +#include +#include + +/* + * With IPv6, it looks like Digital has mixed up the proper order of + * recursive header file inclusion, resulting in the compiler complaining + * that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is + * needed to have fileno() declared correctly... So let's define u_int + */ +#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT) +# define __U_INT +typedef unsigned int u_int; +#endif + +#ifndef OPENSSL_NO_SOCK + +# define USE_SOCKETS +# include "apps.h" +# undef USE_SOCKETS +# include "s_apps.h" + +# include +# include + +/* + * init_client - helper routine to set up socket communication + * @sock: pointer to storage of resulting socket. + * @host: the host name or path (for AF_UNIX) to connect to. + * @port: the port to connect to (ignored for AF_UNIX). + * @family: desired socket family, may be AF_INET, AF_INET6, AF_UNIX or + * AF_UNSPEC + * @type: socket type, must be SOCK_STREAM or SOCK_DGRAM + * + * This will create a socket and use it to connect to a host:port, or if + * family == AF_UNIX, to the path found in host. + * + * If the host has more than one address, it will try them one by one until + * a successful connection is established. The resulting socket will be + * found in *sock on success, it will be given INVALID_SOCKET otherwise. + * + * Returns 1 on success, 0 on failure. + */ +int init_client(int *sock, const char *host, const char *port, + int family, int type) +{ + BIO_ADDRINFO *res = NULL; + const BIO_ADDRINFO *ai = NULL; + int ret; + + if (!BIO_sock_init()) + return 0; + + ret = BIO_lookup(host, port, BIO_LOOKUP_CLIENT, family, type, &res); + if (ret == 0) { + ERR_print_errors(bio_err); + return 0; + } + + ret = 0; + for (ai = res; ai != NULL; ai = BIO_ADDRINFO_next(ai)) { + /* Admittedly, these checks are quite paranoid, we should not get + * anything in the BIO_ADDRINFO chain that we haven't + * asked for. */ + OPENSSL_assert((family == AF_UNSPEC + || family == BIO_ADDRINFO_family(ai)) + && (type == 0 || type == BIO_ADDRINFO_socktype(ai))); + + *sock = BIO_socket(BIO_ADDRINFO_family(ai), BIO_ADDRINFO_socktype(ai), + BIO_ADDRINFO_protocol(ai), 0); + if (*sock == INVALID_SOCKET) { + /* Maybe the kernel doesn't support the socket family, even if + * BIO_lookup() added it in the returned result... + */ + continue; + } + if (!BIO_connect(*sock, BIO_ADDRINFO_address(ai), 0)) { + BIO_closesocket(*sock); + *sock = INVALID_SOCKET; + continue; + } + + /* Success, don't try any more addresses */ + break; + } + + if (*sock == INVALID_SOCKET) { + ERR_print_errors(bio_err); + } else { + /* Remove any stale errors from previous connection attempts */ + ERR_clear_error(); + ret = 1; + } + BIO_ADDRINFO_free(res); + return ret; +} + +/* + * do_server - helper routine to perform a server operation + * @accept_sock: pointer to storage of resulting socket. + * @host: the host name or path (for AF_UNIX) to connect to. + * @port: the port to connect to (ignored for AF_UNIX). + * @family: desired socket family, may be AF_INET, AF_INET6, AF_UNIX or + * AF_UNSPEC + * @type: socket type, must be SOCK_STREAM or SOCK_DGRAM + * @cb: pointer to a function that receives the accepted socket and + * should perform the communication with the connecting client. + * @context: pointer to memory that's passed verbatim to the cb function. + * @naccept: number of times an incoming connect should be accepted. If -1, + * unlimited number. + * + * This will create a socket and use it to listen to a host:port, or if + * family == AF_UNIX, to the path found in host, then start accepting + * incoming connections and run cb on the resulting socket. + * + * 0 on failure, something other on success. + */ +int do_server(int *accept_sock, const char *host, const char *port, + int family, int type, do_server_cb cb, + unsigned char *context, int naccept) +{ + int asock = 0; + int sock; + int i; + BIO_ADDRINFO *res = NULL; + const BIO_ADDRINFO *next; + int sock_family, sock_type, sock_protocol; + const BIO_ADDR *sock_address; + int sock_options = BIO_SOCK_REUSEADDR; + int ret = 0; + + if (!BIO_sock_init()) + return 0; + + if (!BIO_lookup(host, port, BIO_LOOKUP_SERVER, family, type, &res)) { + ERR_print_errors(bio_err); + return 0; + } + + /* Admittedly, these checks are quite paranoid, we should not get + * anything in the BIO_ADDRINFO chain that we haven't asked for */ + OPENSSL_assert((family == AF_UNSPEC || family == BIO_ADDRINFO_family(res)) + && (type == 0 || type == BIO_ADDRINFO_socktype(res))); + + sock_family = BIO_ADDRINFO_family(res); + sock_type = BIO_ADDRINFO_socktype(res); + sock_protocol = BIO_ADDRINFO_protocol(res); + sock_address = BIO_ADDRINFO_address(res); + next = BIO_ADDRINFO_next(res); + if (sock_family == AF_INET6) + sock_options |= BIO_SOCK_V6_ONLY; + if (next != NULL + && BIO_ADDRINFO_socktype(next) == sock_type + && BIO_ADDRINFO_protocol(next) == sock_protocol) { + if (sock_family == AF_INET + && BIO_ADDRINFO_family(next) == AF_INET6) { + sock_family = AF_INET6; + sock_address = BIO_ADDRINFO_address(next); + } else if (sock_family == AF_INET6 + && BIO_ADDRINFO_family(next) == AF_INET) { + sock_options &= ~BIO_SOCK_V6_ONLY; + } + } + + asock = BIO_socket(sock_family, sock_type, sock_protocol, 0); + if (asock == INVALID_SOCKET + || !BIO_listen(asock, sock_address, sock_options)) { + BIO_ADDRINFO_free(res); + ERR_print_errors(bio_err); + if (asock != INVALID_SOCKET) + BIO_closesocket(asock); + goto end; + } + + BIO_ADDRINFO_free(res); + res = NULL; + + if (accept_sock != NULL) + *accept_sock = asock; + for (;;) { + if (type == SOCK_STREAM) { + do { + sock = BIO_accept_ex(asock, NULL, 0); + } while (sock < 0 && BIO_sock_should_retry(sock)); + if (sock < 0) { + ERR_print_errors(bio_err); + BIO_closesocket(asock); + break; + } + i = (*cb)(sock, type, context); + + /* + * Give the socket time to send its last data before we close it. + * No amount of setting SO_LINGER etc on the socket seems to + * persuade Windows to send the data before closing the socket... + * but sleeping for a short time seems to do it (units in ms) + * TODO: Find a better way to do this + */ +#if defined(OPENSSL_SYS_WINDOWS) + Sleep(50); +#elif defined(OPENSSL_SYS_CYGWIN) + usleep(50000); +#endif + + /* + * If we ended with an alert being sent, but still with data in the + * network buffer to be read, then calling BIO_closesocket() will + * result in a TCP-RST being sent. On some platforms (notably + * Windows) then this will result in the peer immediately abandoning + * the connection including any buffered alert data before it has + * had a chance to be read. Shutting down the sending side first, + * and then closing the socket sends TCP-FIN first followed by + * TCP-RST. This seems to allow the peer to read the alert data. + */ + shutdown(sock, 1); /* SHUT_WR */ + BIO_closesocket(sock); + } else { + i = (*cb)(asock, type, context); + } + + if (naccept != -1) + naccept--; + if (i < 0 || naccept == 0) { + BIO_closesocket(asock); + ret = i; + break; + } + } + end: +# ifdef AF_UNIX + if (family == AF_UNIX) + unlink(host); +# endif + return ret; +} + +#endif /* OPENSSL_NO_SOCK */ -- cgit v1.2.3