| /* |
| * apps/s_socket.c - socket-related functions used by s_client and s_server |
| */ |
| /* 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 <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <signal.h> |
| |
| #ifdef FLAT_INC |
| # include "e_os2.h" |
| #else |
| # include "../e_os2.h" |
| #endif |
| |
| /* |
| * 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 |
| |
| #define USE_SOCKETS |
| #define NON_MAIN |
| #include "apps.h" |
| #undef USE_SOCKETS |
| #undef NON_MAIN |
| #include "s_apps.h" |
| #include <openssl/ssl.h> |
| |
| #ifdef FLAT_INC |
| # include "e_os.h" |
| #else |
| # include "../e_os.h" |
| #endif |
| |
| #ifndef OPENSSL_NO_SOCK |
| |
| # if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK) |
| # include "netdb.h" |
| # endif |
| |
| static struct hostent *GetHostByName(char *name); |
| # if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) |
| static void ssl_sock_cleanup(void); |
| # endif |
| static int ssl_sock_init(void); |
| static int init_client_ip(int *sock, unsigned char ip[4], int port, int type); |
| 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, char **host); |
| static int host_ip(char *str, unsigned char ip[4]); |
| |
| # ifdef OPENSSL_SYS_WIN16 |
| # define SOCKET_PROTOCOL 0 /* more microsoft stupidity */ |
| # else |
| # define SOCKET_PROTOCOL IPPROTO_TCP |
| # endif |
| |
| # if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| static int wsa_init_done = 0; |
| # endif |
| |
| # ifdef OPENSSL_SYS_WINDOWS |
| static struct WSAData wsa_state; |
| static int wsa_init_done = 0; |
| |
| # ifdef OPENSSL_SYS_WIN16 |
| static HWND topWnd = 0; |
| static FARPROC lpTopWndProc = NULL; |
| static FARPROC lpTopHookProc = NULL; |
| extern HINSTANCE _hInstance; /* nice global CRT provides */ |
| |
| static LONG FAR PASCAL topHookProc(HWND hwnd, UINT message, WPARAM wParam, |
| LPARAM lParam) |
| { |
| if (hwnd == topWnd) { |
| switch (message) { |
| case WM_DESTROY: |
| case WM_CLOSE: |
| SetWindowLong(topWnd, GWL_WNDPROC, (LONG) lpTopWndProc); |
| ssl_sock_cleanup(); |
| break; |
| } |
| } |
| return CallWindowProc(lpTopWndProc, hwnd, message, wParam, lParam); |
| } |
| |
| static BOOL CALLBACK enumproc(HWND hwnd, LPARAM lParam) |
| { |
| topWnd = hwnd; |
| return (FALSE); |
| } |
| |
| # endif /* OPENSSL_SYS_WIN32 */ |
| # endif /* OPENSSL_SYS_WINDOWS */ |
| |
| # ifdef OPENSSL_SYS_WINDOWS |
| static void ssl_sock_cleanup(void) |
| { |
| if (wsa_init_done) { |
| wsa_init_done = 0; |
| # ifndef OPENSSL_SYS_WINCE |
| WSACancelBlockingCall(); |
| # endif |
| WSACleanup(); |
| } |
| } |
| # elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| static void sock_cleanup(void) |
| { |
| if (wsa_init_done) { |
| wsa_init_done = 0; |
| WSACleanup(); |
| } |
| } |
| # endif |
| |
| static int ssl_sock_init(void) |
| { |
| # ifdef WATT32 |
| extern int _watt_do_exit; |
| _watt_do_exit = 0; |
| if (sock_init()) |
| return (0); |
| # elif defined(OPENSSL_SYS_WINDOWS) |
| if (!wsa_init_done) { |
| int err; |
| |
| # ifdef SIGINT |
| signal(SIGINT, (void (*)(int))ssl_sock_cleanup); |
| # endif |
| wsa_init_done = 1; |
| memset(&wsa_state, 0, sizeof(wsa_state)); |
| if (WSAStartup(0x0101, &wsa_state) != 0) { |
| err = WSAGetLastError(); |
| BIO_printf(bio_err, "unable to start WINSOCK, error code=%d\n", |
| err); |
| return (0); |
| } |
| # ifdef OPENSSL_SYS_WIN16 |
| EnumTaskWindows(GetCurrentTask(), enumproc, 0L); |
| lpTopWndProc = (FARPROC) GetWindowLong(topWnd, GWL_WNDPROC); |
| lpTopHookProc = MakeProcInstance((FARPROC) topHookProc, _hInstance); |
| |
| SetWindowLong(topWnd, GWL_WNDPROC, (LONG) lpTopHookProc); |
| # endif /* OPENSSL_SYS_WIN16 */ |
| } |
| # elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| WORD wVerReq; |
| WSADATA wsaData; |
| int err; |
| |
| if (!wsa_init_done) { |
| |
| # ifdef SIGINT |
| signal(SIGINT, (void (*)(int))sock_cleanup); |
| # endif |
| |
| wsa_init_done = 1; |
| wVerReq = MAKEWORD(2, 0); |
| err = WSAStartup(wVerReq, &wsaData); |
| if (err != 0) { |
| BIO_printf(bio_err, "unable to start WINSOCK2, error code=%d\n", |
| err); |
| return (0); |
| } |
| } |
| # endif /* OPENSSL_SYS_WINDOWS */ |
| return (1); |
| } |
| |
| int init_client(int *sock, char *host, int port, int type) |
| { |
| unsigned char ip[4]; |
| |
| memset(ip, '\0', sizeof ip); |
| if (!host_ip(host, &(ip[0]))) |
| return 0; |
| return init_client_ip(sock, ip, port, type); |
| } |
| |
| static int init_client_ip(int *sock, unsigned char ip[4], int port, int type) |
| { |
| unsigned long addr; |
| struct sockaddr_in them; |
| int s, i; |
| |
| if (!ssl_sock_init()) |
| return (0); |
| |
| memset((char *)&them, 0, sizeof(them)); |
| them.sin_family = AF_INET; |
| them.sin_port = htons((unsigned short)port); |
| addr = (unsigned long) |
| ((unsigned long)ip[0] << 24L) | |
| ((unsigned long)ip[1] << 16L) | |
| ((unsigned long)ip[2] << 8L) | ((unsigned long)ip[3]); |
| them.sin_addr.s_addr = htonl(addr); |
| |
| if (type == SOCK_STREAM) |
| s = socket(AF_INET, SOCK_STREAM, SOCKET_PROTOCOL); |
| else /* ( type == SOCK_DGRAM) */ |
| s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
| |
| if (s == INVALID_SOCKET) { |
| perror("socket"); |
| return (0); |
| } |
| # if defined(SO_KEEPALIVE) && !defined(OPENSSL_SYS_MPE) |
| if (type == SOCK_STREAM) { |
| i = 0; |
| i = setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (char *)&i, sizeof(i)); |
| if (i < 0) { |
| closesocket(s); |
| perror("keepalive"); |
| return (0); |
| } |
| } |
| # endif |
| |
| if (connect(s, (struct sockaddr *)&them, sizeof(them)) == -1) { |
| closesocket(s); |
| perror("connect"); |
| return (0); |
| } |
| *sock = s; |
| return (1); |
| } |
| |
| int do_server(int port, int type, int *ret, |
| int (*cb) (char *hostname, int s, unsigned char *context), |
| unsigned char *context) |
| { |
| int sock; |
| char *name = NULL; |
| 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, &name) == 0) { |
| SHUTDOWN(accept_socket); |
| return (0); |
| } |
| } else |
| sock = accept_socket; |
| i = (*cb) (name, sock, context); |
| if (name != NULL) |
| OPENSSL_free(name); |
| if (type == SOCK_STREAM) |
| SHUTDOWN2(sock); |
| if (i < 0) { |
| SHUTDOWN2(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; |
| |
| if (!ssl_sock_init()) |
| return (0); |
| |
| 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 |
| /* Added for T3E, address-of fails on bit field (beckman@acl.lanl.gov) */ |
| # ifndef BIT_FIELD_LIMITS |
| memcpy(&server.sin_addr.s_addr, ip, 4); |
| # else |
| memcpy(&server.sin_addr, ip, 4); |
| # endif |
| |
| if (type == SOCK_STREAM) |
| s = socket(AF_INET, SOCK_STREAM, SOCKET_PROTOCOL); |
| else /* type == SOCK_DGRAM */ |
| s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
| |
| if (s == INVALID_SOCKET) |
| goto err; |
| # if defined SOL_SOCKET && defined SO_REUSEADDR |
| { |
| int j = 1; |
| setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (void *)&j, sizeof j); |
| } |
| # endif |
| if (bind(s, (struct sockaddr *)&server, sizeof(server)) == -1) { |
| # ifndef OPENSSL_SYS_WINDOWS |
| perror("bind"); |
| # endif |
| 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); |
| } |
| 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, char **host) |
| { |
| int ret; |
| struct hostent *h1, *h2; |
| static struct sockaddr_in from; |
| int len; |
| /* struct linger ling; */ |
| |
| if (!ssl_sock_init()) |
| return (0); |
| |
| # ifndef OPENSSL_SYS_WINDOWS |
| redoit: |
| # endif |
| |
| memset((char *)&from, 0, sizeof(from)); |
| len = sizeof(from); |
| /* |
| * Note: under VMS with SOCKETSHR the fourth parameter is currently of |
| * type (int *) whereas under other systems it is (void *) if you don't |
| * have a cast it will choke the compiler: if you do have a cast then you |
| * can either go for (int *) or (void *). |
| */ |
| ret = accept(acc_sock, (struct sockaddr *)&from, (void *)&len); |
| if (ret == INVALID_SOCKET) { |
| # if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) |
| int i; |
| i = WSAGetLastError(); |
| BIO_printf(bio_err, "accept error %d\n", i); |
| # else |
| if (errno == EINTR) { |
| /* |
| * check_timeout(); |
| */ |
| goto redoit; |
| } |
| fprintf(stderr, "errno=%d ", errno); |
| perror("accept"); |
| # endif |
| return (0); |
| } |
| |
| /*- |
| ling.l_onoff=1; |
| ling.l_linger=0; |
| i=setsockopt(ret,SOL_SOCKET,SO_LINGER,(char *)&ling,sizeof(ling)); |
| if (i < 0) { perror("linger"); return(0); } |
| i=0; |
| i=setsockopt(ret,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i)); |
| if (i < 0) { perror("keepalive"); return(0); } |
| */ |
| |
| if (host == NULL) |
| goto end; |
| # ifndef BIT_FIELD_LIMITS |
| /* I should use WSAAsyncGetHostByName() under windows */ |
| h1 = gethostbyaddr((char *)&from.sin_addr.s_addr, |
| sizeof(from.sin_addr.s_addr), AF_INET); |
| # else |
| h1 = gethostbyaddr((char *)&from.sin_addr, |
| sizeof(struct in_addr), AF_INET); |
| # endif |
| if (h1 == NULL) { |
| BIO_printf(bio_err, "bad gethostbyaddr\n"); |
| *host = NULL; |
| /* return(0); */ |
| } else { |
| if ((*host = (char *)OPENSSL_malloc(strlen(h1->h_name) + 1)) == NULL) { |
| perror("OPENSSL_malloc"); |
| closesocket(ret); |
| return (0); |
| } |
| BUF_strlcpy(*host, h1->h_name, strlen(h1->h_name) + 1); |
| |
| h2 = GetHostByName(*host); |
| if (h2 == NULL) { |
| BIO_printf(bio_err, "gethostbyname failure\n"); |
| closesocket(ret); |
| return (0); |
| } |
| if (h2->h_addrtype != AF_INET) { |
| BIO_printf(bio_err, "gethostbyname addr is not AF_INET\n"); |
| closesocket(ret); |
| return (0); |
| } |
| } |
| end: |
| *sock = ret; |
| return (1); |
| } |
| |
| int extract_host_port(char *str, char **host_ptr, unsigned char *ip, |
| short *port_ptr) |
| { |
| char *h, *p; |
| |
| h = str; |
| p = strchr(str, ':'); |
| if (p == NULL) { |
| BIO_printf(bio_err, "no port defined\n"); |
| return (0); |
| } |
| *(p++) = '\0'; |
| |
| if ((ip != NULL) && !host_ip(str, ip)) |
| goto err; |
| if (host_ptr != NULL) |
| *host_ptr = h; |
| |
| if (!extract_port(p, port_ptr)) |
| goto err; |
| return (1); |
| err: |
| return (0); |
| } |
| |
| static int host_ip(char *str, unsigned char ip[4]) |
| { |
| unsigned int in[4]; |
| int i; |
| |
| if (sscanf(str, "%u.%u.%u.%u", &(in[0]), &(in[1]), &(in[2]), &(in[3])) == |
| 4) { |
| for (i = 0; i < 4; i++) |
| if (in[i] > 255) { |
| BIO_printf(bio_err, "invalid IP address\n"); |
| goto err; |
| } |
| ip[0] = in[0]; |
| ip[1] = in[1]; |
| ip[2] = in[2]; |
| ip[3] = in[3]; |
| } else { /* do a gethostbyname */ |
| struct hostent *he; |
| |
| if (!ssl_sock_init()) |
| return (0); |
| |
| he = GetHostByName(str); |
| if (he == NULL) { |
| BIO_printf(bio_err, "gethostbyname failure\n"); |
| goto err; |
| } |
| /* cast to short because of win16 winsock definition */ |
| if ((short)he->h_addrtype != AF_INET) { |
| BIO_printf(bio_err, "gethostbyname addr is not AF_INET\n"); |
| return (0); |
| } |
| ip[0] = he->h_addr_list[0][0]; |
| ip[1] = he->h_addr_list[0][1]; |
| ip[2] = he->h_addr_list[0][2]; |
| ip[3] = he->h_addr_list[0][3]; |
| } |
| return (1); |
| err: |
| return (0); |
| } |
| |
| int extract_port(char *str, short *port_ptr) |
| { |
| int i; |
| struct servent *s; |
| |
| i = atoi(str); |
| if (i != 0) |
| *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); |
| } |
| |
| # define GHBN_NUM 4 |
| static struct ghbn_cache_st { |
| char name[128]; |
| struct hostent ent; |
| unsigned long order; |
| } ghbn_cache[GHBN_NUM]; |
| |
| static unsigned long ghbn_hits = 0L; |
| static unsigned long ghbn_miss = 0L; |
| |
| static struct hostent *GetHostByName(char *name) |
| { |
| struct hostent *ret; |
| int i, lowi = 0; |
| unsigned long low = (unsigned long)-1; |
| |
| for (i = 0; i < GHBN_NUM; i++) { |
| if (low > ghbn_cache[i].order) { |
| low = ghbn_cache[i].order; |
| lowi = i; |
| } |
| if (ghbn_cache[i].order > 0) { |
| if (strncmp(name, ghbn_cache[i].name, 128) == 0) |
| break; |
| } |
| } |
| if (i == GHBN_NUM) { /* no hit */ |
| ghbn_miss++; |
| ret = gethostbyname(name); |
| if (ret == NULL) |
| return (NULL); |
| /* else add to cache */ |
| if (strlen(name) < sizeof ghbn_cache[0].name) { |
| strcpy(ghbn_cache[lowi].name, name); |
| memcpy((char *)&(ghbn_cache[lowi].ent), ret, |
| sizeof(struct hostent)); |
| ghbn_cache[lowi].order = ghbn_miss + ghbn_hits; |
| } |
| return (ret); |
| } else { |
| ghbn_hits++; |
| ret = &(ghbn_cache[i].ent); |
| ghbn_cache[i].order = ghbn_miss + ghbn_hits; |
| return (ret); |
| } |
| } |
| |
| #endif |
