Edit
IABSD.fr/src/usr.bin/openssl/s_socket.c
kenjiro
- usr.bin/openssl/s_socket.c
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/* $OpenBSD: s_socket.c,v 1.15 2026/05/10 03:26:07 kenjiro Exp $ */ /* 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 <sys/socket.h> #include <netinet/in.h> #include <errno.h> #include <netdb.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include "apps.h" #include <openssl/ssl.h> static int init_server(int *sock, int port, int type); static int init_server_long(int *sock, int port, char *ip, int type); static int do_accept(int acc_sock, int *sock); int init_client(int *sock, char *host, char *port, int type, int af) { struct addrinfo hints, *ai_top, *ai; int i, s = -1; memset(&hints, '\0', sizeof(hints)); hints.ai_family = af; hints.ai_socktype = type; if ((i = getaddrinfo(host, port, &hints, &ai_top)) != 0) { BIO_printf(bio_err, "getaddrinfo: %s\n", gai_strerror(i)); return (0); } if (ai_top == NULL || ai_top->ai_addr == NULL) { BIO_printf(bio_err, "getaddrinfo returned no addresses\n"); if (ai_top != NULL) { freeaddrinfo(ai_top); } return (0); } for (ai = ai_top; ai != NULL; ai = ai->ai_next) { s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); if (s == -1) { continue; } if (type == SOCK_STREAM) { i = 0; i = setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (char *) &i, sizeof(i)); if (i == -1) { perror("keepalive"); goto out; } } if ((i = connect(s, ai->ai_addr, ai->ai_addrlen)) == 0) { *sock = s; freeaddrinfo(ai_top); return (1); } close(s); s = -1; } perror("connect"); out: if (s != -1) close(s); freeaddrinfo(ai_top); return (0); } int do_server(int port, int type, int *ret, int (*cb)(int s, unsigned char *context), unsigned char *context, int naccept) { int sock; int accept_socket = 0; int i; if (!init_server(&accept_socket, port, type)) return (0); if (ret != NULL) { *ret = accept_socket; /* return(1); */ } for (;;) { if (type == SOCK_STREAM) { if (do_accept(accept_socket, &sock) == 0) { shutdown(accept_socket, SHUT_RD); close(accept_socket); return (0); } } else sock = accept_socket; i = cb(sock, context); if (type == SOCK_STREAM) { shutdown(sock, SHUT_RDWR); close(sock); } if (naccept != -1) naccept--; if (i < 0 || naccept == 0) { shutdown(accept_socket, SHUT_RDWR); close(accept_socket); return (i); } } } static int init_server_long(int *sock, int port, char *ip, int type) { int ret = 0; struct sockaddr_in server; int s = -1; memset((char *) &server, 0, sizeof(server)); server.sin_family = AF_INET; server.sin_port = htons((unsigned short) port); if (ip == NULL) server.sin_addr.s_addr = INADDR_ANY; else memcpy(&server.sin_addr.s_addr, ip, 4); if (type == SOCK_STREAM) s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); else /* type == SOCK_DGRAM */ s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (s == -1) goto err; #if defined SOL_SOCKET && defined SO_REUSEADDR { int j = 1; if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (void *) &j, sizeof j) == -1) { perror("setsockopt"); goto err; } } #endif if (bind(s, (struct sockaddr *) & server, sizeof(server)) == -1) { perror("bind"); goto err; } /* Make it 128 for linux */ if (type == SOCK_STREAM && listen(s, 128) == -1) goto err; *sock = s; ret = 1; err: if ((ret == 0) && (s != -1)) { shutdown(s, SHUT_RD); close(s); } return (ret); } static int init_server(int *sock, int port, int type) { return (init_server_long(sock, port, NULL, type)); } static int do_accept(int acc_sock, int *sock) { struct hostent *h1, *h2; static struct sockaddr_in from; socklen_t len; char *host = NULL; int ret; redoit: memset((char *) &from, 0, sizeof(from)); len = sizeof(from); ret = accept(acc_sock, (struct sockaddr *) & from, &len); if (ret == -1) { if (errno == EINTR) { /* check_timeout(); */ goto redoit; } fprintf(stderr, "errno=%d ", errno); perror("accept"); return (0); } h1 = gethostbyaddr((char *) &from.sin_addr.s_addr, sizeof(from.sin_addr.s_addr), AF_INET); if (h1 == NULL) { BIO_printf(bio_err, "bad gethostbyaddr\n"); } else { if ((host = strdup(h1->h_name)) == NULL) { perror("strdup"); close(ret); return (0); } h2 = gethostbyname(host); if (h2 == NULL) { BIO_printf(bio_err, "gethostbyname failure\n"); } else if (h2->h_addrtype != AF_INET) { BIO_printf(bio_err, "gethostbyname addr is not AF_INET\n"); } } free(host); *sock = ret; return (1); } int extract_host_port(char *str, char **host_ptr, unsigned char *ip, char **port_ptr) { char *h, *p; h = str; p = strrchr(str, '/'); /* IPv6 host/port */ if (p == NULL) { p = strrchr(str, ':'); } if (p == NULL) { BIO_printf(bio_err, "no port defined\n"); return (0); } *(p++) = '\0'; if (host_ptr != NULL) *host_ptr = h; if (port_ptr != NULL && p != NULL && *p != '\0') *port_ptr = p; return (1); } int extract_port(char *str, short *port_ptr) { int i; const char *errstr; struct servent *s; i = strtonum(str, 1, 65535, &errstr); if (!errstr) { *port_ptr = (unsigned short) i; } else { s = getservbyname(str, "tcp"); if (s == NULL) { BIO_printf(bio_err, "getservbyname failure for %s\n", str); return (0); } *port_ptr = ntohs((unsigned short) s->s_port); } return (1); }