int gitno_connect(git_transport *t, const char *host, const char *port)
{
struct addrinfo *info = NULL, *p;
struct addrinfo hints;
int ret;
GIT_SOCKET s = INVALID_SOCKET;
memset(&hints, 0x0, sizeof(struct addrinfo));
hints.ai_socktype = SOCK_STREAM;
hints.ai_family = AF_UNSPEC;
if ((ret = p_getaddrinfo(host, port, &hints, &info)) < 0) {
giterr_set(GITERR_NET,
"Failed to resolve address for %s: %s", host, p_gai_strerror(ret));
return -1;
}
for (p = info; p != NULL; p = p->ai_next) {
s = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
if (s == INVALID_SOCKET) {
net_set_error("error creating socket");
break;
}
if (connect(s, p->ai_addr, (socklen_t)p->ai_addrlen) == 0)
break;
/* If we can't connect, try the next one */
gitno_close(s);
s = INVALID_SOCKET;
}
/* Oops, we couldn't connect to any address */
if (s == INVALID_SOCKET && p == NULL) {
giterr_set(GITERR_OS, "Failed to connect to %s", host);
return -1;
}
t->socket = s;
p_freeaddrinfo(info);
if (t->use_ssl && ssl_setup(t, host) < 0)
return -1;
return 0;
}
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 {
int gitno_connect(gitno_socket *s_out, const char *host, const char *port, int flags)
{
struct addrinfo *info = NULL, *p;
struct addrinfo hints;
GIT_SOCKET s = INVALID_SOCKET;
int ret;
#ifdef GIT_WIN32
/* on win32, the WSA context needs to be initialized
* before any socket calls can be performed */
WSADATA wsd;
if (WSAStartup(MAKEWORD(2,2), &wsd) != 0) {
giterr_set(GITERR_OS, "Winsock init failed");
return -1;
}
if (LOBYTE(wsd.wVersion) != 2 || HIBYTE(wsd.wVersion) != 2) {
WSACleanup();
giterr_set(GITERR_OS, "Winsock init failed");
return -1;
}
#endif
/* Zero the socket structure provided */
memset(s_out, 0x0, sizeof(gitno_socket));
memset(&hints, 0x0, sizeof(struct addrinfo));
hints.ai_socktype = SOCK_STREAM;
hints.ai_family = AF_UNSPEC;
if ((ret = p_getaddrinfo(host, port, &hints, &info)) < 0) {
giterr_set(GITERR_NET,
"Failed to resolve address for %s: %s", host, p_gai_strerror(ret));
return -1;
}
for (p = info; p != NULL; p = p->ai_next) {
s = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
if (s == INVALID_SOCKET) {
net_set_error("error creating socket");
break;
}
if (connect(s, p->ai_addr, (socklen_t)p->ai_addrlen) == 0)
break;
/* If we can't connect, try the next one */
gitno__close(s);
s = INVALID_SOCKET;
}
/* Oops, we couldn't connect to any address */
if (s == INVALID_SOCKET && p == NULL) {
giterr_set(GITERR_OS, "Failed to connect to %s", host);
p_freeaddrinfo(info);
return -1;
}
s_out->socket = s;
p_freeaddrinfo(info);
#ifdef GIT_SSL
if ((flags & GITNO_CONNECT_SSL) && ssl_setup(s_out, host, flags) < 0)
return -1;
#else
/* SSL is not supported */
if (flags & GITNO_CONNECT_SSL) {
giterr_set(GITERR_OS, "SSL is not supported by this copy of libgit2.");
return -1;
}
#endif
return 0;
}
