int main(int argc,char * const *argv) { const char *hostname; int opt; char *x; unsigned long u; int s; int t; int flagv4 = 1, flagv6 = 1, rc; struct addrinfo *localai = NULL, hints = {0}, *ai; while ((opt = getopt(argc,argv,"dDvqQhHrR1UXx:t:T:u:g:l:b:B:c:pPoO3IiEeSsw:nN46")) != opteof) switch(opt) { case 'b': scan_ulong(optarg,&backlog); break; case 'c': scan_ulong(optarg,&limit); break; case 'X': flagallownorules = 1; break; case 'x': fnrules = optarg; break; case 'B': banner = optarg; break; case 'd': flagdelay = 1; break; case 'D': flagdelay = 0; break; case 'v': verbosity = 2; break; case 'q': verbosity = 0; break; case 'Q': verbosity = 1; break; case 'P': flagparanoid = 0; break; case 'p': flagparanoid = 1; break; case 'O': flagkillopts = 1; break; case 'o': flagkillopts = 0; break; case 'H': flagremotehost = 0; break; case 'h': flagremotehost = 1; break; case 'R': flagremoteinfo = 0; break; case 'r': flagremoteinfo = 1; break; case 't': scan_ulong(optarg,&timeout); break; case 'T': scan_ulong(optarg,&ssltimeout); break; case 'w': scan_uint(optarg,&progtimeout); break; case 'U': x = env_get("UID"); if (x) scan_ulong(x,&uid); x = env_get("GID"); if (x) scan_ulong(x,&gid); break; case 'u': scan_ulong(optarg,&uid); break; case 'g': scan_ulong(optarg,&gid); break; case '1': flag1 = 1; break; case 'l': localhost = optarg; break; case '3': flag3 = 1; break; case 'I': flagclientcert = 0; break; case 'i': flagclientcert = 1; break; case 'S': flagsslenv = 0; break; case 's': flagsslenv = 1; break; case 'E': flagtcpenv = 0; break; case 'e': flagtcpenv = 1; break; case 'n': flagsslwait = 1; break; case 'N': flagsslwait = 0; break; case '4': flagv6 = 0; break; case '6': flagv4 = 0; break; default: usage(); } if (flagv4 == flagv6) { flagv4 = flagv6 = 1; } argc -= optind; argv += optind; if (!verbosity) buffer_2->fd = -1; hostname = *argv++; if (!hostname) usage(); if (str_equal(hostname,"")) hostname = NULL; if (str_equal(hostname,"0")) hostname = NULL; x = *argv++; if (!x) usage(); prog = argv; if (!*argv) usage(); hints.ai_family = flagv4 == flagv6 ? AF_UNSPEC : flagv4 ? AF_INET : AF_INET6; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_PASSIVE; if ((rc = getaddrinfo(hostname, x, &hints, &localai))) { strerr_die(111,FATAL "unable to figure out address for ", hostname ? hostname : "0", " ",x,": ",gai_strerror(rc),0); } if (!localai) { strerr_die2x(111,FATAL,"address not found"); } if (x = env_get("VERIFYDEPTH")) { scan_ulong(x,&u); verifydepth = u; } if (x = env_get("CAFILE")) cafile = x; if (cafile && str_equal(cafile,"")) cafile = 0; if (x = env_get("CCAFILE")) ccafile = x; if (ccafile && str_equal(ccafile,"")) ccafile = 0; if (!flagclientcert) ccafile = 0; if (x = env_get("CADIR")) cadir = x; if (cadir && str_equal(cadir,"")) cadir= 0; if (x = env_get("CERTCHAINFILE")) certchainfile = x; if (certchainfile && str_equal(certchainfile,"")) certchainfile = 0; if (x = env_get("CERTFILE")) certfile = x; if (certfile && str_equal(certfile,"")) certfile = 0; if (x = env_get("KEYFILE")) keyfile = x; if (keyfile && str_equal(keyfile,"")) keyfile = 0; if (x = env_get("DHFILE")) dhfile = x; if (dhfile && str_equal(dhfile,"")) dhfile = 0; if (x = env_get("CIPHERS")) ciphers = x; if (ciphers && str_equal(ciphers,"")) ciphers = 0; sig_block(sig_child); sig_catch(sig_child,sigchld); sig_catch(sig_term,sigterm); sig_ignore(sig_pipe); for (ai = localai; ai; ai = ai->ai_next) { s = socket_tcp(ai->ai_family, ai->ai_protocol); if (s == -1) strerr_die2sys(111,FATAL,"unable to create socket: "); if (socket_bind_reuse(s,ai) == -1) strerr_die2sys(111,FATAL,"unable to bind: "); if (socket_local(s,&localaddr,&localport) == -1) strerr_die2sys(111,FATAL,"unable to get local address: "); if (socket_listen(s,backlog) == -1) strerr_die2sys(111,FATAL,"unable to listen: "); break; } freeaddrinfo(localai); localai = NULL; ndelay_off(s); localportstr[fmt_ulong(localportstr,localport)] = 0; if (flag1) { buffer_init(&b,buffer_unixwrite,1,bspace,sizeof bspace); buffer_puts(&b,localportstr); buffer_puts(&b,"\n"); buffer_flush(&b); } if (flag3) read_passwd(); ctx = ssl_server(); ssl_errstr(); if (!ctx) strerr_die2x(111,FATAL,"unable to create SSL context"); if (certchainfile) { switch (ssl_chainfile(ctx,certchainfile,keyfile,passwd_cb)) { case -1: strerr_die2x(111,FATAL,"unable to load certificate chain file"); case -2: strerr_die2x(111,FATAL,"unable to load key"); case -3: strerr_die2x(111,FATAL,"key does not match certificate"); default: break; } } else { switch (ssl_certkey(ctx,certfile,keyfile,passwd_cb)) { case -1: strerr_die2x(111,FATAL,"unable to load certificate"); case -2: strerr_die2x(111,FATAL,"unable to load key"); case -3: strerr_die2x(111,FATAL,"key does not match certificate"); default: break; } } if (!ssl_ca(ctx,cafile,cadir,verifydepth)) strerr_die2x(111,FATAL,"unable to load CA list"); if (!ssl_cca(ctx,ccafile)) strerr_die2x(111,FATAL,"unable to load client CA list"); if (!ssl_params(ctx,dhfile,rsalen)) strerr_die2x(111,FATAL,"unable to set DH/RSA parameters"); if (!ssl_ciphers(ctx,ciphers)) strerr_die2x(111,FATAL,"unable to set cipher list"); if (verbosity >= 2) { strnum[fmt_ulong(strnum,getpid())] = 0; strnum2[fmt_ulong(strnum2,rsalen)] = 0; strerr_warn4("sslserver: cafile ",strnum," ",cafile,0); strerr_warn4("sslserver: ccafile ",strnum," ",ccafile,0); strerr_warn4("sslserver: cadir ",strnum," ",cadir,0); strerr_warn4("sslserver: chainfile ",strnum," ",certchainfile,0); strerr_warn4("sslserver: cert ",strnum," ",certfile,0); strerr_warn4("sslserver: key ",strnum," ",keyfile,0); strerr_warn6("sslserver: param ",strnum," ",dhfile," ",strnum2,0); } close(0); open_read("/dev/null"); close(1); open_append("/dev/null"); printstatus(); for (;;) { while (numchildren >= limit) sig_pause(); sig_unblock(sig_child); t = socket_accept(s,&remoteaddr,&remoteport); sig_block(sig_child); if (t == -1) continue; ++numchildren; printstatus(); switch(fork()) { case 0: close(s); doit(t); strerr_die4sys(111,DROP,"unable to run ",*argv,": "); case -1: strerr_warn2(DROP,"unable to fork: ",&strerr_sys); --numchildren; printstatus(); } close(t); } }
int main(int argc,char **argv) { char *hostname; // char *portname; int opt; struct servent *se; char *x; unsigned long u; int s; int t; while ((opt = getopt(argc,argv,"4dDvqQhHrR1UXx:t:u:g:l:b:B:c:I:pPoO")) != opteof) switch(opt) { case 'b': scan_ulong(optarg,&backlog); break; case 'c': scan_ulong(optarg,&limit); break; case 'X': flagallownorules = 1; break; case 'x': fnrules = optarg; break; case 'B': banner = optarg; break; case 'd': flagdelay = 1; break; case 'D': flagdelay = 0; break; case 'v': verbosity = 2; break; case 'q': verbosity = 0; break; case 'Q': verbosity = 1; break; case 'P': flagparanoid = 0; break; case 'p': flagparanoid = 1; break; case 'O': flagkillopts = 1; break; case 'o': flagkillopts = 0; break; case 'H': flagremotehost = 0; break; case 'h': flagremotehost = 1; break; // case 'R': flagremoteinfo = 0; break; case 'r': flagremoteinfo = 1; break; case 't': scan_ulong(optarg,&timeout); break; case 'U': x = env_get("UID"); if (x) scan_ulong(x,&uid); x = env_get("GID"); if (x) scan_ulong(x,&gid); break; case 'u': scan_ulong(optarg,&uid); break; case 'g': scan_ulong(optarg,&gid); break; case 'I': netif=socket_getifidx(optarg); break; case '1': flag1 = 1; break; // case '4': noipv6 = 1; break; case '4': ipv4socket = 1; break; // case '6': forcev6 = 1; break; case 'l': localhost = optarg; break; default: usage(); } argc -= optind; argv += optind; if (!verbosity) buffer_2->fd = -1; hostname = *argv++; if (!hostname) usage(); if (str_equal(hostname,"")) hostname = "0"; x = *argv++; if (!x) usage(); if (!x[scan_ulong(x,&u)]) localport = u; else { se = getservbyname(x,"tcp"); if (!se) errint(EHARD,B("unable to figure out port number for ",x)); uint16_unpack_big((char*)&se->s_port,&localport); } if (!*argv) usage(); sig_block(sig_child); sig_catch(sig_child,sigchld); sig_catch(sig_term,sigterm); sig_ignore(sig_pipe); if (str_equal(hostname,"0")) { byte_zero(localip,sizeof localip); } else { if (!stralloc_copys(&tmp,hostname)) errmem; if (dns_ip6_qualify(&addresses,&fqdn,&tmp) == -1) errint(EHARD,B("temporarily unable to figure out IP address for ",hostname,": ")); if (addresses.len < 16) errint(EHARD,B("no IP address for ",hostname)); byte_copy(localip,16,addresses.s); if (ip6_isv4mapped(localip)) ipv4socket = 1; } s = socket_tcp(); if (s == -1) errint(EHARD,"unable to create socket: "); if (socket_bind_reuse(s,localip,localport,netif) == -1) errint(EHARD,"unable to bind: "); if (!ipv4socket) ipv4socket = ip6_isv4mapped(localip); if (socket_local(s,localip,&localport,&netif) == -1) errint(EHARD,"unable to get local address: "); if (socket_listen(s,backlog) == -1) errint(EHARD,"unable to listen: "); ndelay_off(s); if (gid) if (prot_gid(gid) == -1) errint(EHARD,"unable to set gid: "); if (uid) if (prot_uid(uid) == -1) errint(EHARD,"unable to set uid: "); localportstr[fmt_ulong(localportstr,localport)] = 0; if (flag1) { buffer_init(&b,write,1,bspace,sizeof bspace); buffer_puts(&b,localportstr); buffer_puts(&b,"\n"); buffer_flush(&b); } close(0); close(1); printstatus(); for (;;) { while (numchildren >= limit) sig_pause(); sig_unblock(sig_child); t = socket_accept(s,remoteip,&remoteport,&netif); sig_block(sig_child); if (t == -1) continue; ++numchildren; printstatus(); switch(fork()) { case 0: close(s); doit(t); if ((fd_move(0,t) == -1) || (fd_copy(1,0) == -1)) errint(EHARD,"unable to set up descriptors: "); sig_uncatch(sig_child); sig_unblock(sig_child); sig_uncatch(sig_term); sig_uncatch(sig_pipe); pathexec(argv); errint(EHARD,B("unable to run ",*argv,": ")); case -1: errlog(ESOFT,NOTICE,"unable to fork: "); --numchildren; printstatus(); } close(t); } }