char *do_select(SOCKET skt, int startup)
{
int events;
if (startup)
sftp_ssh_socket = skt;
else
sftp_ssh_socket = INVALID_SOCKET;
if (p_WSAEventSelect) {
if (startup) {
events = (FD_CONNECT | FD_READ | FD_WRITE |
FD_OOB | FD_CLOSE | FD_ACCEPT);
netevent = CreateEvent(NULL, FALSE, FALSE, NULL);
} else {
events = 0;
}
if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) {
switch (p_WSAGetLastError()) {
case WSAENETDOWN:
return "Network is down";
default:
return "WSAEventSelect(): unknown error";
}
}
}
return NULL;
}
char *do_select(SOCKET skt, int startup)
{
int events;
if (startup) {
events = (FD_CONNECT | FD_READ | FD_WRITE |
FD_OOB | FD_CLOSE | FD_ACCEPT);
} else {
events = 0;
}
if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) {
switch (p_WSAGetLastError()) {
case WSAENETDOWN:
return "Network is down";
default:
return "WSAEventSelect(): unknown error";
}
}
return NULL;
}
SockAddr *sk_namelookup(const char *host, char **canonicalname,
int address_family)
{
SockAddr *ret = snew(SockAddr);
unsigned long a;
char realhost[8192];
int hint_family;
/* Default to IPv4. */
hint_family = (address_family == ADDRTYPE_IPV4 ? AF_INET :
#ifndef NO_IPV6
address_family == ADDRTYPE_IPV6 ? AF_INET6 :
#endif
AF_UNSPEC);
/* Clear the structure and default to IPv4. */
memset(ret, 0, sizeof(SockAddr));
#ifndef NO_IPV6
ret->ais = NULL;
#endif
ret->namedpipe = false;
ret->addresses = NULL;
ret->resolved = false;
ret->refcount = 1;
*realhost = '\0';
if ((a = p_inet_addr(host)) == (unsigned long) INADDR_NONE) {
struct hostent *h = NULL;
int err = 0;
#ifndef NO_IPV6
/*
* Use getaddrinfo when it's available
*/
if (p_getaddrinfo) {
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = hint_family;
hints.ai_flags = AI_CANONNAME;
{
/* strip [] on IPv6 address literals */
char *trimmed_host = host_strduptrim(host);
err = p_getaddrinfo(trimmed_host, NULL, &hints, &ret->ais);
sfree(trimmed_host);
}
if (err == 0)
ret->resolved = true;
} else
#endif
{
/*
* Otherwise use the IPv4-only gethostbyname...
* (NOTE: we don't use gethostbyname as a fallback!)
*/
if ( (h = p_gethostbyname(host)) )
ret->resolved = true;
else
err = p_WSAGetLastError();
}
if (!ret->resolved) {
ret->error = (err == WSAENETDOWN ? "Network is down" :
err == WSAHOST_NOT_FOUND ? "Host does not exist" :
err == WSATRY_AGAIN ? "Host not found" :
#ifndef NO_IPV6
p_getaddrinfo&&p_gai_strerror ? p_gai_strerror(err) :
#endif
"gethostbyname: unknown error");
} else {
ret->error = NULL;
#ifndef NO_IPV6
/* If we got an address info use that... */
if (ret->ais) {
/* Are we in IPv4 fallback mode? */
/* We put the IPv4 address into the a variable so we can further-on use the IPv4 code... */
if (ret->ais->ai_family == AF_INET)
memcpy(&a,
(char *) &((SOCKADDR_IN *) ret->ais->
ai_addr)->sin_addr, sizeof(a));
if (ret->ais->ai_canonname)
strncpy(realhost, ret->ais->ai_canonname, lenof(realhost));
else
strncpy(realhost, host, lenof(realhost));
}
/* We used the IPv4-only gethostbyname()... */
else
#endif
{
int n;
for (n = 0; h->h_addr_list[n]; n++);
ret->addresses = snewn(n, unsigned long);
ret->naddresses = n;
for (n = 0; n < ret->naddresses; n++) {
memcpy(&a, h->h_addr_list[n], sizeof(a));
ret->addresses[n] = p_ntohl(a);
}
memcpy(&a, h->h_addr, sizeof(a));
/* This way we are always sure the h->h_name is valid :) */
strncpy(realhost, h->h_name, sizeof(realhost));
}
}
} else {