int _assuan_sock_check_nonce (assuan_context_t ctx, assuan_fd_t fd, assuan_sock_nonce_t *nonce) { #ifdef HAVE_W32_SYSTEM char buffer[16], *p; size_t nleft; int n; if (sizeof nonce->nonce != 16) { gpg_err_set_errno (EINVAL); return -1; } if (nonce->length == 42 && nonce->nonce[0] == 42) return 0; /* Not a Unix domain socket. */ if (nonce->length != 16) { gpg_err_set_errno (EINVAL); return -1; } p = buffer; nleft = 16; while (nleft) { n = _assuan_read (ctx, SOCKET2HANDLE(fd), p, nleft); if (n < 0 && errno == EINTR) ; else if (n < 0 && errno == EAGAIN) Sleep (100); else if (n < 0) return -1; else if (!n) { gpg_err_set_errno (EIO); return -1; } else { p += n; nleft -= n; } } if (memcmp (buffer, nonce->nonce, 16)) { gpg_err_set_errno (EACCES); return -1; } #else (void)fd; (void)nonce; #endif return 0; }
/* Return a new socket. Note that under W32 we consider a socket the same as an System Handle; all functions using such a handle know about this dual use and act accordingly. */ assuan_fd_t _assuan_sock_new (assuan_context_t ctx, int domain, int type, int proto) { #ifdef HAVE_W32_SYSTEM assuan_fd_t res; if (domain == AF_UNIX || domain == AF_LOCAL) domain = AF_INET; res = SOCKET2HANDLE(_assuan_socket (ctx, domain, type, proto)); return res; #else return _assuan_socket (ctx, domain, type, proto); #endif }
/* Return a new socket. Note that under W32 we consider a socket the same as an System Handle; all functions using such a handle know about this dual use and act accordingly. */ assuan_fd_t _assuan_sock_new (int domain, int type, int proto) { #ifdef HAVE_W32_SYSTEM assuan_fd_t res; if (domain == AF_UNIX || domain == AF_LOCAL) domain = AF_INET; res = SOCKET2HANDLE(socket (domain, type, proto)); if (res == ASSUAN_INVALID_FD) errno = _assuan_sock_wsa2errno (WSAGetLastError ()); return res; #else return socket (domain, type, proto); #endif }
static int accept_connection (assuan_context_t ctx) { assuan_fd_t fd; struct sockaddr_un clnt_addr; socklen_t len = sizeof clnt_addr; fd = SOCKET2HANDLE(accept (HANDLE2SOCKET(ctx->listen_fd), (struct sockaddr*)&clnt_addr, &len )); if (fd == ASSUAN_INVALID_FD) { ctx->os_errno = errno; return _assuan_error (ASSUAN_Accept_Failed); } if (_assuan_sock_check_nonce (fd, &ctx->listen_nonce)) { _assuan_close (fd); ctx->os_errno = EACCES; return _assuan_error (ASSUAN_Accept_Failed); } ctx->connected_fd = fd; return accept_connection_bottom (ctx); }