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#include <iostream>
#include "nginx-util.hpp"
#ifndef NO_SSL
#include "nginx-ssl-util.hpp"
#endif
void create_lan_listen()
{
std::string listen = "# This file is re-created if Nginx starts or"
" a LAN address changes.\n";
std::string listen_default = listen;
std::string ssl_listen = listen;
std::string ssl_listen_default = listen;
auto add_listen = [&listen, &listen_default
#ifndef NO_SSL
,&ssl_listen, &ssl_listen_default
#endif
]
(const std::string &pre, const std::string &ip, const std::string &suf)
-> void
{
if (ip.empty()) { return; }
const std::string val = pre + ip + suf;
listen += "\tlisten " + val + ":80;\n";
listen_default += "\tlisten " + val + ":80 default_server;\n";
#ifndef NO_SSL
ssl_listen += "\tlisten " + val + ":443 ssl;\n";
ssl_listen_default += "\tlisten " + val + ":443 ssl default_server;\n";
#endif
};
#ifndef NO_UBUS
try {
auto loopback_status=ubus::call("network.interface.loopback", "status");
for (auto ip : loopback_status.filter("ipv4-address", "", "address")) {
add_listen("", static_cast<const char *>(blobmsg_data(ip)), "");
}
for (auto ip : loopback_status.filter("ipv6-address", "", "address")) {
add_listen("[", static_cast<const char *>(blobmsg_data(ip)), "]");
}
} catch (const std::runtime_error &) { /* do nothing about it */ }
try {
auto lan_status = ubus::call("network.interface.lan", "status");
for (auto ip : lan_status.filter("ipv4-address", "", "address")) {
add_listen("", static_cast<const char *>(blobmsg_data(ip)), "");
}
for (auto ip : lan_status.filter("ipv6-address", "", "address")) {
add_listen("[", static_cast<const char *>(blobmsg_data(ip)), "]");
}
for (auto ip : lan_status.filter("ipv6-prefix-assignment", "",
"local-address", "address"))
{
add_listen("[", static_cast<const char *>(blobmsg_data(ip)), "]");
}
} catch (const std::runtime_error &) { /* do nothing about it */ }
#else
add_listen("", "127.0.0.1", "");
#endif
write_file(LAN_LISTEN, listen);
write_file(LAN_LISTEN_DEFAULT, listen_default);
#ifndef NO_SSL
write_file(LAN_SSL_LISTEN, ssl_listen);
write_file(LAN_SSL_LISTEN_DEFAULT, ssl_listen_default);
#endif
}
void init_lan()
{
std::exception_ptr ex;
#ifndef NO_SSL
auto thrd = std::thread([]{ //&ex
try { add_ssl_if_needed(std::string{LAN_NAME}); }
catch (...) {
std::cerr<<"init_lan notice: no server named "<<LAN_NAME<<std::endl;
// not: ex = std::current_exception();
}
});
#endif
try { create_lan_listen(); }
catch (...) {
std::cerr<<"init_lan error: cannot create LAN listen files"<<std::endl;
ex = std::current_exception();
}
#ifndef NO_SSL
thrd.join();
#endif
if (ex) { std::rethrow_exception(ex); }
}
void get_env()
{
std::cout<<"NGINX_CONF="<<"'"<<NGINX_CONF<<"'"<<std::endl;
std::cout<<"CONF_DIR="<<"'"<<CONF_DIR<<"'"<<std::endl;
std::cout<<"LAN_NAME="<<"'"<<LAN_NAME<<"'"<<std::endl;
std::cout<<"LAN_LISTEN="<<"'"<<LAN_LISTEN<<"'"<<std::endl;
#ifndef NO_SSL
std::cout<<"LAN_SSL_LISTEN="<<"'"<<LAN_SSL_LISTEN<<"'"<<std::endl;
std::cout<<"SSL_SESSION_CACHE_ARG="<<"'"<<SSL_SESSION_CACHE_ARG(LAN_NAME)<<
"'"<<std::endl;
std::cout<<"SSL_SESSION_TIMEOUT_ARG="<<"'"<<SSL_SESSION_TIMEOUT_ARG<<"'\n";
std::cout<<"ADD_SSL_FCT="<<"'"<<ADD_SSL_FCT<<"'"<<std::endl;
#endif
}
auto main(int argc, char * argv[]) -> int
{
// TODO(pst): use std::span when available:
auto args = std::basic_string_view<char *>{argv, static_cast<size_t>(argc)};
auto cmds = std::array{
std::array<std::string_view, 2>{"init_lan", ""},
std::array<std::string_view, 2>{"get_env", ""},
#ifndef NO_SSL
std::array<std::string_view, 2>{ADD_SSL_FCT, " server_name" },
std::array<std::string_view, 2>{"del_ssl", " server_name" },
#endif
};
try {
if (argc==2 && args[1]==cmds[0][0]) { init_lan(); }
else if (argc==2 && args[1]==cmds[1][0]) { get_env(); }
#ifndef NO_SSL
else if (argc==3 && args[1]==cmds[2][0])
{ add_ssl_if_needed(std::string{args[2]});}
else if (argc==3 && args[1]==cmds[3][0])
{ del_ssl(std::string{args[2]}); }
else if (argc==2 && args[1]==cmds[3][0])
{ del_ssl(std::string{LAN_NAME}); }
#endif
else {
std::cerr<<"Tool for creating Nginx configuration files (";
#ifdef VERSION
std::cerr<<"version "<<VERSION<<" ";
#endif
std::cerr<<"with ";
#ifndef NO_UBUS
std::cerr<<"ubus, ";
#endif
#ifndef NO_SSL
std::cerr<<"libopenssl, ";
#ifdef NO_PCRE
std::cerr<<"std::regex, ";
#else
std::cerr<<"PCRE, ";
#endif
#endif
std::cerr<<"pthread and libstdcpp)."<<std::endl;
auto usage = std::string{"usage: "} + *argv + " [";
for (auto cmd : cmds) {
usage += std::string{cmd[0]};
usage += std::string{cmd[1]} + "|";
}
usage[usage.size()-1] = ']';
std::cerr<<usage<<std::endl;
throw std::runtime_error("main error: argument not recognized");
}
return 0;
}
catch (const std::exception & e) { std::cerr<<e.what()<<std::endl; }
catch (...) { perror("main error"); }
return 1;
}
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