busybox wget calls OpenSSL-specific options for higher security. It IS a bummer that libressl does not support these, but we are patching busybox for the time being. --- busybox/networking/wget.c.orig 2021-03-18 17:26:14.456704013 +0300 +++ busybox/networking/wget.c 2021-03-18 17:26:18.400719891 +0300 @@ -670,8 +670,7 @@ pid = xvfork(); if (pid == 0) { /* Child */ - char *argv[13]; - char **argp; + char *argv[9]; close(sp[0]); xmove_fd(sp[1], 0); @@ -694,25 +693,13 @@ * TLS server_name (SNI) field are FQDNs (DNS hostnames). * IPv4 and IPv6 addresses, port numbers are not allowed. */ - argp = &argv[5]; if (!is_ip_address(servername)) { - *argp++ = (char*)"-servername"; //[5] - *argp++ = (char*)servername; //[6] + argv[5] = (char*)"-servername"; + argv[6] = (char*)servername; } if (!(option_mask32 & WGET_OPT_NO_CHECK_CERT)) { - /* Abort on bad server certificate */ - *argp++ = (char*)"-verify"; //[7] - *argp++ = (char*)"100"; //[8] - *argp++ = (char*)"-verify_return_error"; //[9] - if (!is_ip_address(servername)) { - *argp++ = (char*)"-verify_hostname"; //[10] - *argp++ = (char*)servername; //[11] - } else { - *argp++ = (char*)"-verify_ip"; //[10] - *argp++ = (char*)host; //[11] - } + argv[7] = (char*)"-verify_return_error"; } - //[12] (or earlier) is NULL terminator BB_EXECVP(argv[0], argv); xmove_fd(3, 2);