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-rw-r--r--crypto/bio/b_sock.c266
1 files changed, 224 insertions, 42 deletions
diff --git a/crypto/bio/b_sock.c b/crypto/bio/b_sock.c
index f0d9cfc..41f958b 100644
--- a/crypto/bio/b_sock.c
+++ b/crypto/bio/b_sock.c
@@ -72,11 +72,9 @@ NETDB_DEFINE_CONTEXT
#ifndef OPENSSL_NO_SOCK
-#ifdef OPENSSL_SYS_WIN16
-#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
-#else
+#include <openssl/dso.h>
+
#define SOCKET_PROTOCOL IPPROTO_TCP
-#endif
#ifdef SO_MAXCONN
#define MAX_LISTEN SO_MAXCONN
@@ -90,6 +88,17 @@ NETDB_DEFINE_CONTEXT
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;
@@ -226,6 +235,10 @@ int BIO_sock_error(int sock)
int j,i;
int size;
+#if defined(OPENSSL_SYS_BEOS_R5)
+ return 0;
+#endif
+
size=sizeof(int);
/* Note: under Windows the third parameter is of type (char *)
* whereas under other systems it is (void *) if you don't have
@@ -466,7 +479,12 @@ int BIO_sock_init(void)
wsa_init_done=1;
memset(&wsa_state,0,sizeof(wsa_state));
- if (WSAStartup(0x0101,&wsa_state)!=0)
+ /* 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);
@@ -510,8 +528,8 @@ void BIO_sock_cleanup(void)
if (wsa_init_done)
{
wsa_init_done=0;
-#ifndef OPENSSL_SYS_WINCE
- WSACancelBlockingCall(); /* Winsock 1.1 specific */
+#if 0 /* this call is claimed to be non-present in Winsock2 */
+ WSACancelBlockingCall();
#endif
WSACleanup();
}
@@ -533,7 +551,30 @@ int BIO_socket_ioctl(int fd, long type, void *arg)
#ifdef __DJGPP__
i=ioctlsocket(fd,type,(char *)arg);
#else
- i=ioctlsocket(fd,type,arg);
+# 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());
@@ -581,12 +622,18 @@ static int get_ip(const char *str, unsigned char ip[4])
int BIO_get_accept_socket(char *host, int bind_mode)
{
int ret=0;
- struct sockaddr_in server,client;
- int s=INVALID_SOCKET,cs;
+ 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;
- const char *h,*p;
+ char *h,*p;
unsigned long l;
int err_num;
@@ -600,8 +647,7 @@ int BIO_get_accept_socket(char *host, int bind_mode)
{
if (*e == ':')
{
- p= &(e[1]);
- *e='\0';
+ p=e;
}
else if (*e == '/')
{
@@ -609,21 +655,74 @@ int BIO_get_accept_socket(char *host, int bind_mode)
break;
}
}
-
- if (p == NULL)
+ 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)
{
- p=h;
- 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.sin_family=AF_INET;
- server.sin_port=htons(port);
+ server.sa_in.sin_family=AF_INET;
+ server.sa_in.sin_port=htons(port);
+ addrlen = sizeof(server.sa_in);
- if (strcmp(h,"*") == 0)
- server.sin_addr.s_addr=INADDR_ANY;
+ 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;
@@ -632,11 +731,11 @@ int BIO_get_accept_socket(char *host, int bind_mode)
((unsigned long)ip[1]<<16L)|
((unsigned long)ip[2]<< 8L)|
((unsigned long)ip[3]);
- server.sin_addr.s_addr=htonl(l);
+ server.sa_in.sin_addr.s_addr=htonl(l);
}
again:
- s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
+ s=socket(server.sa.sa_family,SOCK_STREAM,SOCKET_PROTOCOL);
if (s == INVALID_SOCKET)
{
SYSerr(SYS_F_SOCKET,get_last_socket_error());
@@ -654,7 +753,7 @@ again:
bind_mode=BIO_BIND_NORMAL;
}
#endif
- if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
+ if (bind(s,&server.sa,addrlen) == -1)
{
#ifdef SO_REUSEADDR
err_num=get_last_socket_error();
@@ -668,15 +767,28 @@ again:
(err_num == EADDRINUSE))
#endif
{
- memcpy((char *)&client,(char *)&server,sizeof(server));
- if (strcmp(h,"*") == 0)
- client.sin_addr.s_addr=htonl(0x7F000001);
- cs=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
+ 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,(struct sockaddr *)&client,
- sizeof(client));
+ ii=connect(cs,&client.sa,addrlen);
closesocket(cs);
if (ii == INVALID_SOCKET)
{
@@ -715,20 +827,52 @@ err:
int BIO_accept(int sock, char **addr)
{
int ret=INVALID_SOCKET;
- static struct sockaddr_in from;
unsigned long l;
unsigned short port;
- int len;
char *p;
- 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 *).
+ 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>
*/
- ret=accept(sock,(struct sockaddr *)&from,(void *)&len);
+ 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;
@@ -739,8 +883,46 @@ int BIO_accept(int sock, char **addr)
if (addr == NULL) goto end;
- l=ntohl(from.sin_addr.s_addr);
- port=ntohs(from.sin_port);
+#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)
@@ -778,7 +960,6 @@ int BIO_set_tcp_ndelay(int s, int on)
#endif
return(ret == 0);
}
-#endif
int BIO_socket_nbio(int s, int mode)
{
@@ -791,3 +972,4 @@ int BIO_socket_nbio(int s, int mode)
#endif
return(ret == 0);
}
+#endif
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