static int init_local(CLI *c) { SOCKADDR_UNION addr; socklen_t addrlen; addrlen=sizeof(SOCKADDR_UNION); if(getpeername(c->local_rfd.fd, &addr.sa, &addrlen)<0) { strcpy(c->accepting_address, "NOT A SOCKET"); c->local_rfd.is_socket=0; c->local_wfd.is_socket=0; /* TODO: It's not always true */ #ifdef USE_WIN32 if(get_last_socket_error()!=ENOTSOCK) { #else if(c->opt->option.transparent || get_last_socket_error()!=ENOTSOCK) { #endif sockerror("getpeerbyname"); return -1; } /* Ignore ENOTSOCK error so 'local' doesn't have to be a socket */ } else { /* success */ /* copy addr to c->peer_addr */ memcpy(&c->peer_addr.addr[0], &addr, sizeof(SOCKADDR_UNION)); c->peer_addr.num=1; s_ntop(c->accepting_address, &c->peer_addr.addr[0]); c->local_rfd.is_socket=1; c->local_wfd.is_socket=1; /* TODO: It's not always true */ /* It's a socket: lets setup options */ if(set_socket_options(c->local_rfd.fd, 1)<0) return -1; if(auth_libwrap(c)<0) return -1; if(auth_user(c)<0) { s_log(LOG_WARNING, "Connection from %s REFUSED by IDENT", c->accepting_address); return -1; } s_log(LOG_NOTICE, "%s connected from %s", c->opt->servname, c->accepting_address); } return 0; /* OK */ } static int init_remote(CLI *c) { int fd; /* create connection to host/service */ if(c->opt->source_addr.num) memcpy(&c->bind_addr, &c->opt->source_addr, sizeof(SOCKADDR_LIST)); #ifndef USE_WIN32 else if(c->opt->option.transparent) memcpy(&c->bind_addr, &c->peer_addr, sizeof(SOCKADDR_LIST)); #endif else { c->bind_addr.num=0; /* don't bind connecting socket */ } /* Setup c->remote_fd, now */ if(c->opt->option.remote) { fd=connect_remote(c); } else /* NOT in remote mode */ fd=connect_local(c); if(fd<0) { s_log(LOG_ERR, "Failed to initialize remote connection"); return -1; } #ifndef USE_WIN32 if(fd>=max_fds) { s_log(LOG_ERR, "Remote file descriptor out of range (%d>=%d)", fd, max_fds); closesocket(fd); return -1; } #endif s_log(LOG_DEBUG, "Remote FD=%d initialized", fd); c->remote_fd.fd=fd; c->remote_fd.is_socket=1; /* Always! */ if(set_socket_options(fd, 2)<0) return -1; return 0; /* OK */ }
static int init_local(CLI *c) { int addrlen; addrlen=sizeof(c->addr); if(getpeername(c->local_rfd.fd, (struct sockaddr *)&c->addr, &addrlen)<0) { strcpy(c->accepting_address, "NOT A SOCKET"); c->local_rfd.is_socket=0; c->local_wfd.is_socket=0; /* TODO: It's not always true */ #ifdef USE_WIN32 if(get_last_socket_error()!=ENOTSOCK) { #else if(c->opt->option.transparent || get_last_socket_error()!=ENOTSOCK) { #endif sockerror("getpeerbyname"); return -1; } /* Ignore ENOTSOCK error so 'local' doesn't have to be a socket */ } else { safe_ntoa(c->accepting_address, c->addr.sin_addr); c->local_rfd.is_socket=1; c->local_wfd.is_socket=1; /* TODO: It's not always true */ /* It's a socket: lets setup options */ if(set_socket_options(c->local_rfd.fd, 1)<0) return -1; if(auth_libwrap(c)<0) return -1; if(auth_user(c)<0) { log(LOG_WARNING, "Connection from %s:%d REFUSED by IDENT", c->accepting_address, ntohs(c->addr.sin_port)); return -1; } log(LOG_NOTICE, "%s connected from %s:%d", c->opt->servname, c->accepting_address, ntohs(c->addr.sin_port)); } return 0; /* OK */ } static int init_remote(CLI *c) { int fd; /* create connection to host/service */ if(c->opt->local_ip) c->bind_ip=*c->opt->local_ip; #ifndef USE_WIN32 else if(c->opt->option.transparent) c->bind_ip=c->addr.sin_addr.s_addr; #endif else c->bind_ip=0; /* Setup c->remote_fd, now */ if(c->opt->option.remote) { c->resolved_addresses=NULL; fd=connect_remote(c); if(c->resolved_addresses) /* allocated */ free(c->resolved_addresses); } else /* NOT in remote mode */ fd=connect_local(c); if(fd<0) { log(LOG_ERR, "Failed to initialize remote connection"); return -1; } #ifndef USE_WIN32 if(fd>=max_fds) { log(LOG_ERR, "Remote file descriptor out of range (%d>=%d)", fd, max_fds); closesocket(fd); return -1; } #endif log(LOG_DEBUG, "Remote FD=%d initialized", fd); c->remote_fd.fd=fd; c->remote_fd.is_socket=1; /* Always! */ if(set_socket_options(fd, 2)<0) return -1; return 0; /* OK */ }