Function client_addr

clientname.c:55–84

Return the IP addr of the client as a string. */

/* Return the IP addr of the client as a string. */
char *client_addr(int fd)
{
	struct sockaddr_storage ss;
	socklen_t length = sizeof ss;

	if (*ipaddr_buf)
		return ipaddr_buf;

	if (am_daemon < 0) {	/* daemon over --rsh mode */
		char *env_str;
		strlcpy(ipaddr_buf, "0.0.0.0", sizeof ipaddr_buf);
		if ((env_str = getenv("REMOTE_HOST")) != NULL
		 || (env_str = getenv("SSH_CONNECTION")) != NULL
		 || (env_str = getenv("SSH_CLIENT")) != NULL
		 || (env_str = getenv("SSH2_CLIENT")) != NULL) {
			char *p;
			strlcpy(ipaddr_buf, env_str, sizeof ipaddr_buf);
			/* Truncate the value to just the IP address. */
			if ((p = strchr(ipaddr_buf, ' ')) != NULL)
				*p = '\0';
		}
		if (valid_ipaddr(ipaddr_buf, True))
			return ipaddr_buf;
	}

	client_sockaddr(fd, &ss, &length);
	getnameinfo((struct sockaddr *)&ss, length, ipaddr_buf, sizeof ipaddr_buf, NULL, 0, NI_NUMERICHOST);

	return ipaddr_buf;
}


/**