| /* crypto/bio/b_sock.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 <stdlib.h> |
| #include <errno.h> |
| #define USE_SOCKETS |
| #include "cryptlib.h" |
| #include <openssl/bio.h> |
| #if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK) |
| # include <netdb.h> |
| # if defined(NETWARE_CLIB) |
| # include <sys/ioctl.h> |
| NETDB_DEFINE_CONTEXT |
| # endif |
| #endif |
| #ifndef OPENSSL_NO_SOCK |
| # include <openssl/dso.h> |
| # define SOCKET_PROTOCOL IPPROTO_TCP |
| # ifdef SO_MAXCONN |
| # define MAX_LISTEN SO_MAXCONN |
| # elif defined(SOMAXCONN) |
| # define MAX_LISTEN SOMAXCONN |
| # else |
| # define MAX_LISTEN 32 |
| # endif |
| # if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) |
| static int wsa_init_done = 0; |
| # endif |
| |
| /* |
| * WSAAPI specifier is required to make indirect calls to run-time |
| * linked WinSock 2 functions used in this module, to be specific |
| * [get|free]addrinfo and getnameinfo. This is because WinSock uses |
| * uses non-C calling convention, __stdcall vs. __cdecl, on x86 |
| * Windows. On non-WinSock platforms WSAAPI needs to be void. |
| */ |
| # ifndef WSAAPI |
| # define WSAAPI |
| # endif |
| |
| # if 0 |
| static unsigned long BIO_ghbn_hits = 0L; |
| static unsigned long BIO_ghbn_miss = 0L; |
| |
| # define GHBN_NUM 4 |
| static struct ghbn_cache_st { |
| char name[129]; |
| struct hostent *ent; |
| unsigned long order; |
| } ghbn_cache[GHBN_NUM]; |
| # endif |
| |
| static int get_ip(const char *str, unsigned char *ip); |
| # if 0 |
| static void ghbn_free(struct hostent *a); |
| static struct hostent *ghbn_dup(struct hostent *a); |
| # endif |
| int BIO_get_host_ip(const char *str, unsigned char *ip) |
| { |
| int i; |
| int err = 1; |
| int locked = 0; |
| struct hostent *he; |
| |
| i = get_ip(str, ip); |
| if (i < 0) { |
| BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_INVALID_IP_ADDRESS); |
| goto err; |
| } |
| |
| /* |
| * At this point, we have something that is most probably correct in some |
| * way, so let's init the socket. |
| */ |
| if (BIO_sock_init() != 1) |
| return 0; /* don't generate another error code here */ |
| |
| /* |
| * If the string actually contained an IP address, we need not do |
| * anything more |
| */ |
| if (i > 0) |
| return (1); |
| |
| /* do a gethostbyname */ |
| CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); |
| locked = 1; |
| he = BIO_gethostbyname(str); |
| if (he == NULL) { |
| BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_BAD_HOSTNAME_LOOKUP); |
| goto err; |
| } |
| |
| if (he->h_addrtype != AF_INET) { |
| BIOerr(BIO_F_BIO_GET_HOST_IP, |
| BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET); |
| goto err; |
| } |
| for (i = 0; i < 4; i++) |
| ip[i] = he->h_addr_list[0][i]; |
| err = 0; |
| |
| err: |
| if (locked) |
| CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); |
| if (err) { |
| ERR_add_error_data(2, "host=", str); |
| return 0; |
| } else |
| return 1; |
| } |
| |
| int BIO_get_port(const char *str, unsigned short *port_ptr) |
| { |
| int i; |
| struct servent *s; |
| |
| if (str == NULL) { |
| BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_DEFINED); |
| return (0); |
| } |
| i = atoi(str); |
| if (i != 0) |
| *port_ptr = (unsigned short)i; |
| else { |
| CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME); |
| /* |
| * Note: under VMS with SOCKETSHR, it seems like the first parameter |
| * is 'char *', instead of 'const char *' |
| */ |
| # ifndef CONST_STRICT |
| s = getservbyname((char *)str, "tcp"); |
| # else |
| s = getservbyname(str, "tcp"); |
| # endif |
| if (s != NULL) |
| *port_ptr = ntohs((unsigned short)s->s_port); |
| CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME); |
| if (s == NULL) { |
| if (strcmp(str, "http") == 0) |
| *port_ptr = 80; |
| else if (strcmp(str, "telnet") == 0) |
| *port_ptr = 23; |
| else if (strcmp(str, "socks") == 0) |
| *port_ptr = 1080; |
| else if (strcmp(str, "https") == 0) |
| *port_ptr = 443; |
| else if (strcmp(str, "ssl") == 0) |
| *port_ptr = 443; |
| else if (strcmp(str, "ftp") == 0) |
| *port_ptr = 21; |
| else if (strcmp(str, "gopher") == 0) |
| *port_ptr = 70; |
| # if 0 |
| else if (strcmp(str, "wais") == 0) |
| *port_ptr = 21; |
| # endif |
| else { |
| SYSerr(SYS_F_GETSERVBYNAME, get_last_socket_error()); |
| ERR_add_error_data(3, "service='", str, "'"); |
| return (0); |
| } |
| } |
| } |
| return (1); |
| } |
| |
| int BIO_sock_error(int sock) |
| { |
| int j, i; |
| union { |
| size_t s; |
| int i; |
| } size; |
| |
| /* heuristic way to adapt for platforms that expect 64-bit optlen */ |
| size.s = 0, size.i = sizeof(j); |
| /* |
| * Note: under Windows the third parameter is of type (char *) 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 |
| * (char *) or (void *). |
| */ |
| i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, (void *)&size); |
| if (i < 0) |
| return (1); |
| else |
| return (j); |
| } |
| |
| # if 0 |
| long BIO_ghbn_ctrl(int cmd, int iarg, char *parg) |
| { |
| int i; |
| char **p; |
| |
| switch (cmd) { |
| case BIO_GHBN_CTRL_HITS: |
| return (BIO_ghbn_hits); |
| /* break; */ |
| case BIO_GHBN_CTRL_MISSES: |
| return (BIO_ghbn_miss); |
| /* break; */ |
| case BIO_GHBN_CTRL_CACHE_SIZE: |
| return (GHBN_NUM); |
| /* break; */ |
| case BIO_GHBN_CTRL_GET_ENTRY: |
| if ((iarg >= 0) && (iarg < GHBN_NUM) && (ghbn_cache[iarg].order > 0)) { |
| p = (char **)parg; |
| if (p == NULL) |
| return (0); |
| *p = ghbn_cache[iarg].name; |
| ghbn_cache[iarg].name[128] = '\0'; |
| return (1); |
| } |
| return (0); |
| /* break; */ |
| case BIO_GHBN_CTRL_FLUSH: |
| for (i = 0; i < GHBN_NUM; i++) |
| ghbn_cache[i].order = 0; |
| break; |
| default: |
| return (0); |
| } |
| return (1); |
| } |
| # endif |
| |
| # if 0 |
| static struct hostent *ghbn_dup(struct hostent *a) |
| { |
| struct hostent *ret; |
| int i, j; |
| |
| MemCheck_off(); |
| ret = (struct hostent *)OPENSSL_malloc(sizeof(struct hostent)); |
| if (ret == NULL) |
| return (NULL); |
| memset(ret, 0, sizeof(struct hostent)); |
| |
| for (i = 0; a->h_aliases[i] != NULL; i++) ; |
| i++; |
| ret->h_aliases = (char **)OPENSSL_malloc(i * sizeof(char *)); |
| if (ret->h_aliases == NULL) |
| goto err; |
| memset(ret->h_aliases, 0, i * sizeof(char *)); |
| |
| for (i = 0; a->h_addr_list[i] != NULL; i++) ; |
| i++; |
| ret->h_addr_list = (char **)OPENSSL_malloc(i * sizeof(char *)); |
| if (ret->h_addr_list == NULL) |
| goto err; |
| memset(ret->h_addr_list, 0, i * sizeof(char *)); |
| |
| j = strlen(a->h_name) + 1; |
| if ((ret->h_name = OPENSSL_malloc(j)) == NULL) |
| goto err; |
| memcpy((char *)ret->h_name, a->h_name, j); |
| for (i = 0; a->h_aliases[i] != NULL; i++) { |
| j = strlen(a->h_aliases[i]) + 1; |
| if ((ret->h_aliases[i] = OPENSSL_malloc(j)) == NULL) |
| goto err; |
| memcpy(ret->h_aliases[i], a->h_aliases[i], j); |
| } |
| ret->h_length = a->h_length; |
| ret->h_addrtype = a->h_addrtype; |
| for (i = 0; a->h_addr_list[i] != NULL; i++) { |
| if ((ret->h_addr_list[i] = OPENSSL_malloc(a->h_length)) == NULL) |
| goto err; |
| memcpy(ret->h_addr_list[i], a->h_addr_list[i], a->h_length); |
| } |
| if (0) { |
| err: |
| if (ret != NULL) |
| ghbn_free(ret); |
| ret = NULL; |
| } |
| MemCheck_on(); |
| return (ret); |
| } |
| |
| static void ghbn_free(struct hostent *a) |
| { |
| int i; |
| |
| if (a == NULL) |
| return; |
| |
| if (a->h_aliases != NULL) { |
| for (i = 0; a->h_aliases[i] != NULL; i++) |
| OPENSSL_free(a->h_aliases[i]); |
| OPENSSL_free(a->h_aliases); |
| } |
| if (a->h_addr_list != NULL) { |
| for (i = 0; a->h_addr_list[i] != NULL; i++) |
| OPENSSL_free(a->h_addr_list[i]); |
| OPENSSL_free(a->h_addr_list); |
| } |
| if (a->h_name != NULL) |
| OPENSSL_free(a->h_name); |
| OPENSSL_free(a); |
| } |
| |
| # endif |
| |
| struct hostent *BIO_gethostbyname(const char *name) |
| { |
| # if 1 |
| /* |
| * Caching gethostbyname() results forever is wrong, so we have to let |
| * the true gethostbyname() worry about this |
| */ |
| # if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__)) |
| return gethostbyname((char *)name); |
| # else |
| return gethostbyname(name); |
| # endif |
| # else |
| struct hostent *ret; |
| int i, lowi = 0, j; |
| unsigned long low = (unsigned long)-1; |
| |
| # if 0 |
| /* |
| * It doesn't make sense to use locking here: The function interface is |
| * not thread-safe, because threads can never be sure when some other |
| * thread destroys the data they were given a pointer to. |
| */ |
| CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); |
| # endif |
| j = strlen(name); |
| if (j < 128) { |
| 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; |
| } |
| } |
| } else |
| i = GHBN_NUM; |
| |
| if (i == GHBN_NUM) { /* no hit */ |
| BIO_ghbn_miss++; |
| /* |
| * Note: under VMS with SOCKETSHR, it seems like the first parameter |
| * is 'char *', instead of 'const char *' |
| */ |
| # ifndef CONST_STRICT |
| ret = gethostbyname((char *)name); |
| # else |
| ret = gethostbyname(name); |
| # endif |
| |
| if (ret == NULL) |
| goto end; |
| if (j > 128) { /* too big to cache */ |
| # if 0 |
| /* |
| * If we were trying to make this function thread-safe (which is |
| * bound to fail), we'd have to give up in this case (or allocate |
| * more memory). |
| */ |
| ret = NULL; |
| # endif |
| goto end; |
| } |
| |
| /* else add to cache */ |
| if (ghbn_cache[lowi].ent != NULL) |
| ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */ |
| ghbn_cache[lowi].name[0] = '\0'; |
| |
| if ((ret = ghbn_cache[lowi].ent = ghbn_dup(ret)) == NULL) { |
| BIOerr(BIO_F_BIO_GETHOSTBYNAME, ERR_R_MALLOC_FAILURE); |
| goto end; |
| } |
| strncpy(ghbn_cache[lowi].name, name, 128); |
| ghbn_cache[lowi].order = BIO_ghbn_miss + BIO_ghbn_hits; |
| } else { |
| BIO_ghbn_hits++; |
| ret = ghbn_cache[i].ent; |
| ghbn_cache[i].order = BIO_ghbn_miss + BIO_ghbn_hits; |
| } |
| end: |
| # if 0 |
| CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); |
| # endif |
| return (ret); |
| # endif |
| } |
| |
| int BIO_sock_init(void) |
| { |
| # ifdef OPENSSL_SYS_WINDOWS |
| static struct WSAData wsa_state; |
| |
| if (!wsa_init_done) { |
| int err; |
| |
| wsa_init_done = 1; |
| memset(&wsa_state, 0, sizeof(wsa_state)); |
| /* |
| * Not making wsa_state available to the rest of the code is formally |
| * wrong. But the structures we use are [beleived to be] invariable |
| * among Winsock DLLs, while API availability is [expected to be] |
| * probed at run-time with DSO_global_lookup. |
| */ |
| if (WSAStartup(0x0202, &wsa_state) != 0) { |
| err = WSAGetLastError(); |
| SYSerr(SYS_F_WSASTARTUP, err); |
| BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP); |
| return (-1); |
| } |
| } |
| # endif /* OPENSSL_SYS_WINDOWS */ |
| # ifdef WATT32 |
| extern int _watt_do_exit; |
| _watt_do_exit = 0; /* don't make sock_init() call exit() */ |
| if (sock_init()) |
| return (-1); |
| # endif |
| |
| # if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| WORD wVerReq; |
| WSADATA wsaData; |
| int err; |
| |
| if (!wsa_init_done) { |
| wsa_init_done = 1; |
| wVerReq = MAKEWORD(2, 0); |
| err = WSAStartup(wVerReq, &wsaData); |
| if (err != 0) { |
| SYSerr(SYS_F_WSASTARTUP, err); |
| BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP); |
| return (-1); |
| } |
| } |
| # endif |
| |
| return (1); |
| } |
| |
| void BIO_sock_cleanup(void) |
| { |
| # ifdef OPENSSL_SYS_WINDOWS |
| if (wsa_init_done) { |
| wsa_init_done = 0; |
| # if 0 /* this call is claimed to be non-present in |
| * Winsock2 */ |
| WSACancelBlockingCall(); |
| # endif |
| WSACleanup(); |
| } |
| # elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| if (wsa_init_done) { |
| wsa_init_done = 0; |
| WSACleanup(); |
| } |
| # endif |
| } |
| |
| # if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000 |
| |
| int BIO_socket_ioctl(int fd, long type, void *arg) |
| { |
| int i; |
| |
| # ifdef __DJGPP__ |
| i = ioctlsocket(fd, type, (char *)arg); |
| # else |
| # if defined(OPENSSL_SYS_VMS) |
| /*- |
| * 2011-02-18 SMS. |
| * VMS ioctl() can't tolerate a 64-bit "void *arg", but we |
| * observe that all the consumers pass in an "unsigned long *", |
| * so we arrange a local copy with a short pointer, and use |
| * that, instead. |
| */ |
| # if __INITIAL_POINTER_SIZE == 64 |
| # define ARG arg_32p |
| # pragma pointer_size save |
| # pragma pointer_size 32 |
| unsigned long arg_32; |
| unsigned long *arg_32p; |
| # pragma pointer_size restore |
| arg_32p = &arg_32; |
| arg_32 = *((unsigned long *)arg); |
| # else /* __INITIAL_POINTER_SIZE == 64 */ |
| # define ARG arg |
| # endif /* __INITIAL_POINTER_SIZE == 64 [else] */ |
| # else /* defined(OPENSSL_SYS_VMS) */ |
| # define ARG arg |
| # endif /* defined(OPENSSL_SYS_VMS) [else] */ |
| |
| i = ioctlsocket(fd, type, ARG); |
| # endif /* __DJGPP__ */ |
| if (i < 0) |
| SYSerr(SYS_F_IOCTLSOCKET, get_last_socket_error()); |
| return (i); |
| } |
| # endif /* __VMS_VER */ |
| |
| /* |
| * The reason I have implemented this instead of using sscanf is because |
| * Visual C 1.52c gives an unresolved external when linking a DLL :-( |
| */ |
| static int get_ip(const char *str, unsigned char ip[4]) |
| { |
| unsigned int tmp[4]; |
| int num = 0, c, ok = 0; |
| |
| tmp[0] = tmp[1] = tmp[2] = tmp[3] = 0; |
| |
| for (;;) { |
| c = *(str++); |
| if ((c >= '0') && (c <= '9')) { |
| ok = 1; |
| tmp[num] = tmp[num] * 10 + c - '0'; |
| if (tmp[num] > 255) |
| return (0); |
| } else if (c == '.') { |
| if (!ok) |
| return (-1); |
| if (num == 3) |
| return (0); |
| num++; |
| ok = 0; |
| } else if (c == '\0' && (num == 3) && ok) |
| break; |
| else |
| return (0); |
| } |
| ip[0] = tmp[0]; |
| ip[1] = tmp[1]; |
| ip[2] = tmp[2]; |
| ip[3] = tmp[3]; |
| return (1); |
| } |
| |
| int BIO_get_accept_socket(char *host, int bind_mode) |
| { |
| int ret = 0; |
| union { |
| struct sockaddr sa; |
| struct sockaddr_in sa_in; |
| # if OPENSSL_USE_IPV6 |
| struct sockaddr_in6 sa_in6; |
| # endif |
| } server, client; |
| int s = INVALID_SOCKET, cs, addrlen; |
| unsigned char ip[4]; |
| unsigned short port; |
| char *str = NULL, *e; |
| char *h, *p; |
| unsigned long l; |
| int err_num; |
| |
| if (BIO_sock_init() != 1) |
| return (INVALID_SOCKET); |
| |
| if ((str = BUF_strdup(host)) == NULL) |
| return (INVALID_SOCKET); |
| |
| h = p = NULL; |
| h = str; |
| for (e = str; *e; e++) { |
| if (*e == ':') { |
| p = e; |
| } else if (*e == '/') { |
| *e = '\0'; |
| break; |
| } |
| } |
| if (p) |
| *p++ = '\0'; /* points at last ':', '::port' is special |
| * [see below] */ |
| else |
| p = h, h = NULL; |
| |
| # ifdef EAI_FAMILY |
| do { |
| static union { |
| void *p; |
| int (WSAAPI *f) (const char *, const char *, |
| const struct addrinfo *, struct addrinfo **); |
| } p_getaddrinfo = { |
| NULL |
| }; |
| static union { |
| void *p; |
| void (WSAAPI *f) (struct addrinfo *); |
| } p_freeaddrinfo = { |
| NULL |
| }; |
| struct addrinfo *res, hint; |
| |
| if (p_getaddrinfo.p == NULL) { |
| if ((p_getaddrinfo.p = DSO_global_lookup("getaddrinfo")) == NULL |
| || (p_freeaddrinfo.p = |
| DSO_global_lookup("freeaddrinfo")) == NULL) |
| p_getaddrinfo.p = (void *)-1; |
| } |
| if (p_getaddrinfo.p == (void *)-1) |
| break; |
| |
| /* |
| * '::port' enforces IPv6 wildcard listener. Some OSes, e.g. Solaris, |
| * default to IPv6 without any hint. Also note that commonly IPv6 |
| * wildchard socket can service IPv4 connections just as well... |
| */ |
| memset(&hint, 0, sizeof(hint)); |
| hint.ai_flags = AI_PASSIVE; |
| if (h) { |
| if (strchr(h, ':')) { |
| if (h[1] == '\0') |
| h = NULL; |
| # if OPENSSL_USE_IPV6 |
| hint.ai_family = AF_INET6; |
| # else |
| h = NULL; |
| # endif |
| } else if (h[0] == '*' && h[1] == '\0') { |
| hint.ai_family = AF_INET; |
| h = NULL; |
| } |
| } |
| |
| if ((*p_getaddrinfo.f) (h, p, &hint, &res)) |
| break; |
| |
| addrlen = res->ai_addrlen <= sizeof(server) ? |
| res->ai_addrlen : sizeof(server); |
| memcpy(&server, res->ai_addr, addrlen); |
| |
| (*p_freeaddrinfo.f) (res); |
| goto again; |
| } while (0); |
| # endif |
| |
| if (!BIO_get_port(p, &port)) |
| goto err; |
| |
| memset((char *)&server, 0, sizeof(server)); |
| server.sa_in.sin_family = AF_INET; |
| server.sa_in.sin_port = htons(port); |
| addrlen = sizeof(server.sa_in); |
| |
| if (h == NULL || strcmp(h, "*") == 0) |
| server.sa_in.sin_addr.s_addr = INADDR_ANY; |
| else { |
| if (!BIO_get_host_ip(h, &(ip[0]))) |
| goto err; |
| l = (unsigned long) |
| ((unsigned long)ip[0] << 24L) | |
| ((unsigned long)ip[1] << 16L) | |
| ((unsigned long)ip[2] << 8L) | ((unsigned long)ip[3]); |
| server.sa_in.sin_addr.s_addr = htonl(l); |
| } |
| |
| again: |
| s = socket(server.sa.sa_family, SOCK_STREAM, SOCKET_PROTOCOL); |
| if (s == INVALID_SOCKET) { |
| SYSerr(SYS_F_SOCKET, get_last_socket_error()); |
| ERR_add_error_data(3, "port='", host, "'"); |
| BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_CREATE_SOCKET); |
| goto err; |
| } |
| # ifdef SO_REUSEADDR |
| if (bind_mode == BIO_BIND_REUSEADDR) { |
| int i = 1; |
| |
| ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *)&i, sizeof(i)); |
| bind_mode = BIO_BIND_NORMAL; |
| } |
| # endif |
| if (bind(s, &server.sa, addrlen) == -1) { |
| # ifdef SO_REUSEADDR |
| err_num = get_last_socket_error(); |
| if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) && |
| # ifdef OPENSSL_SYS_WINDOWS |
| /* |
| * Some versions of Windows define EADDRINUSE to a dummy value. |
| */ |
| (err_num == WSAEADDRINUSE)) |
| # else |
| (err_num == EADDRINUSE)) |
| # endif |
| { |
| client = server; |
| if (h == NULL || strcmp(h, "*") == 0) { |
| # if OPENSSL_USE_IPV6 |
| if (client.sa.sa_family == AF_INET6) { |
| memset(&client.sa_in6.sin6_addr, 0, |
| sizeof(client.sa_in6.sin6_addr)); |
| client.sa_in6.sin6_addr.s6_addr[15] = 1; |
| } else |
| # endif |
| if (client.sa.sa_family == AF_INET) { |
| client.sa_in.sin_addr.s_addr = htonl(0x7F000001); |
| } else |
| goto err; |
| } |
| cs = socket(client.sa.sa_family, SOCK_STREAM, SOCKET_PROTOCOL); |
| if (cs != INVALID_SOCKET) { |
| int ii; |
| ii = connect(cs, &client.sa, addrlen); |
| closesocket(cs); |
| if (ii == INVALID_SOCKET) { |
| bind_mode = BIO_BIND_REUSEADDR; |
| closesocket(s); |
| goto again; |
| } |
| /* else error */ |
| } |
| /* else error */ |
| } |
| # endif |
| SYSerr(SYS_F_BIND, err_num); |
| ERR_add_error_data(3, "port='", host, "'"); |
| BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_BIND_SOCKET); |
| goto err; |
| } |
| if (listen(s, MAX_LISTEN) == -1) { |
| SYSerr(SYS_F_BIND, get_last_socket_error()); |
| ERR_add_error_data(3, "port='", host, "'"); |
| BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_LISTEN_SOCKET); |
| goto err; |
| } |
| ret = 1; |
| err: |
| if (str != NULL) |
| OPENSSL_free(str); |
| if ((ret == 0) && (s != INVALID_SOCKET)) { |
| closesocket(s); |
| s = INVALID_SOCKET; |
| } |
| return (s); |
| } |
| |
| int BIO_accept(int sock, char **addr) |
| { |
| int ret = INVALID_SOCKET; |
| unsigned long l; |
| unsigned short port; |
| char *p; |
| |
| struct { |
| /* |
| * As for following union. Trouble is that there are platforms |
| * that have socklen_t and there are platforms that don't, on |
| * some platforms socklen_t is int and on some size_t. So what |
| * one can do? One can cook #ifdef spaghetti, which is nothing |
| * but masochistic. Or one can do union between int and size_t. |
| * One naturally does it primarily for 64-bit platforms where |
| * sizeof(int) != sizeof(size_t). But would it work? Note that |
| * if size_t member is initialized to 0, then later int member |
| * assignment naturally does the job on little-endian platforms |
| * regardless accept's expectations! What about big-endians? |
| * If accept expects int*, then it works, and if size_t*, then |
| * length value would appear as unreasonably large. But this |
| * won't prevent it from filling in the address structure. The |
| * trouble of course would be if accept returns more data than |
| * actual buffer can accomodate and overwrite stack... That's |
| * where early OPENSSL_assert comes into picture. Besides, the |
| * only 64-bit big-endian platform found so far that expects |
| * size_t* is HP-UX, where stack grows towards higher address. |
| * <appro> |
| */ |
| union { |
| size_t s; |
| int i; |
| } len; |
| union { |
| struct sockaddr sa; |
| struct sockaddr_in sa_in; |
| # if OPENSSL_USE_IPV6 |
| struct sockaddr_in6 sa_in6; |
| # endif |
| } from; |
| } sa; |
| |
| sa.len.s = 0; |
| sa.len.i = sizeof(sa.from); |
| memset(&sa.from, 0, sizeof(sa.from)); |
| ret = accept(sock, &sa.from.sa, (void *)&sa.len); |
| if (sizeof(sa.len.i) != sizeof(sa.len.s) && sa.len.i == 0) { |
| OPENSSL_assert(sa.len.s <= sizeof(sa.from)); |
| sa.len.i = (int)sa.len.s; |
| /* use sa.len.i from this point */ |
| } |
| if (ret == INVALID_SOCKET) { |
| if (BIO_sock_should_retry(ret)) |
| return -2; |
| SYSerr(SYS_F_ACCEPT, get_last_socket_error()); |
| BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR); |
| goto end; |
| } |
| |
| if (addr == NULL) |
| goto end; |
| |
| # ifdef EAI_FAMILY |
| do { |
| char h[NI_MAXHOST], s[NI_MAXSERV]; |
| size_t nl; |
| static union { |
| void *p; |
| int (WSAAPI *f) (const struct sockaddr *, size_t /* socklen_t */ , |
| char *, size_t, char *, size_t, int); |
| } p_getnameinfo = { |
| NULL |
| }; |
| /* |
| * 2nd argument to getnameinfo is specified to be socklen_t. |
| * Unfortunately there is a number of environments where socklen_t is |
| * not defined. As it's passed by value, it's safe to pass it as |
| * size_t... <appro> |
| */ |
| |
| if (p_getnameinfo.p == NULL) { |
| if ((p_getnameinfo.p = DSO_global_lookup("getnameinfo")) == NULL) |
| p_getnameinfo.p = (void *)-1; |
| } |
| if (p_getnameinfo.p == (void *)-1) |
| break; |
| |
| if ((*p_getnameinfo.f) (&sa.from.sa, sa.len.i, h, sizeof(h), s, |
| sizeof(s), NI_NUMERICHOST | NI_NUMERICSERV)) |
| break; |
| nl = strlen(h) + strlen(s) + 2; |
| p = *addr; |
| if (p) { |
| *p = '\0'; |
| p = OPENSSL_realloc(p, nl); |
| } else { |
| p = OPENSSL_malloc(nl); |
| } |
| if (p == NULL) { |
| BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE); |
| goto end; |
| } |
| *addr = p; |
| BIO_snprintf(*addr, nl, "%s:%s", h, s); |
| goto end; |
| } while (0); |
| # endif |
| if (sa.from.sa.sa_family != AF_INET) |
| goto end; |
| l = ntohl(sa.from.sa_in.sin_addr.s_addr); |
| port = ntohs(sa.from.sa_in.sin_port); |
| if (*addr == NULL) { |
| if ((p = OPENSSL_malloc(24)) == NULL) { |
| BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE); |
| goto end; |
| } |
| *addr = p; |
| } |
| BIO_snprintf(*addr, 24, "%d.%d.%d.%d:%d", |
| (unsigned char)(l >> 24L) & 0xff, |
| (unsigned char)(l >> 16L) & 0xff, |
| (unsigned char)(l >> 8L) & 0xff, |
| (unsigned char)(l) & 0xff, port); |
| end: |
| return (ret); |
| } |
| |
| int BIO_set_tcp_ndelay(int s, int on) |
| { |
| int ret = 0; |
| # if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP)) |
| int opt; |
| |
| # ifdef SOL_TCP |
| opt = SOL_TCP; |
| # else |
| # ifdef IPPROTO_TCP |
| opt = IPPROTO_TCP; |
| # endif |
| # endif |
| |
| ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on)); |
| # endif |
| return (ret == 0); |
| } |
| |
| int BIO_socket_nbio(int s, int mode) |
| { |
| int ret = -1; |
| int l; |
| |
| l = mode; |
| # ifdef FIONBIO |
| ret = BIO_socket_ioctl(s, FIONBIO, &l); |
| # endif |
| return (ret == 0); |
| } |
| #endif |
