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nghttp2/examples/shrpx_config.cc

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/*
* Spdylay - SPDY Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "shrpx_config.h"
#include <pwd.h>
#include <netdb.h>
#include <cstring>
#include <cerrno>
#include <limits>
#include <fstream>
#include <iostream>
#include "util.h"
using namespace spdylay;
namespace shrpx {
const char SHRPX_OPT_PRIVATE_KEY_FILE[] = "private-key-file";
const char SHRPX_OPT_CERTIFICATE_FILE[] = "certificate-file";
const char SHRPX_OPT_BACKEND[] = "backend";
const char SHRPX_OPT_FRONTEND[] = "frontend";
const char SHRPX_OPT_WORKERS[] = "workers";
const char
SHRPX_OPT_SPDY_MAX_CONCURRENT_STREAMS[] = "spdy-max-concurrent-streams";
const char SHRPX_OPT_LOG_LEVEL[] = "log-level";
const char SHRPX_OPT_DAEMON[] = "daemon";
const char SHRPX_OPT_SPDY_PROXY[] = "spdy-proxy";
const char SHRPX_OPT_ADD_X_FORWARDED_FOR[] = "add-x-forwarded-for";
const char
SHRPX_OPT_FRONTEND_SPDY_READ_TIMEOUT[] = "frontend-spdy-read-timeout";
const char SHRPX_OPT_FRONTEND_READ_TIMEOUT[] = "frontend-read-timeout";
const char SHRPX_OPT_FRONTEND_WRITE_TIMEOUT[] = "frontend-write-timeout";
const char SHRPX_OPT_BACKEND_READ_TIMEOUT[] = "backend-read-timeout";
const char SHRPX_OPT_BACKEND_WRITE_TIMEOUT[] = "backend-write-timeout";
const char SHRPX_OPT_ACCESSLOG[] = "accesslog";
const char
SHRPX_OPT_BACKEND_KEEP_ALIVE_TIMEOUT[] = "backend-keep-alive-timeout";
const char SHRPX_OPT_FRONTEND_SPDY_WINDOW_BITS[] = "frontend-spdy-window-bits";
const char SHRPX_OPT_PID_FILE[] = "pid-file";
const char SHRPX_OPT_USER[] = "user";
Config::Config()
: verbose(false),
daemon(false),
host(0),
port(0),
private_key_file(0),
cert_file(0),
verify_client(false),
server_name(0),
downstream_host(0),
downstream_port(0),
downstream_hostport(0),
downstream_addrlen(0),
num_worker(0),
spdy_max_concurrent_streams(0),
spdy_proxy(false),
add_x_forwarded_for(false),
accesslog(false),
spdy_upstream_window_bits(0),
pid_file(0),
uid(0),
gid(0),
conf_path(0)
{}
namespace {
Config *config = 0;
} // namespace
const Config* get_config()
{
return config;
}
Config* mod_config()
{
return config;
}
void create_config()
{
config = new Config();
}
namespace {
int split_host_port(char *host, size_t hostlen, uint16_t *port_ptr,
const char *hostport)
{
// host and port in |hostport| is separated by single ','.
const char *p = strchr(hostport, ',');
if(!p) {
std::cerr << "Invalid host, port: " << hostport << std::endl;
return -1;
}
size_t len = p-hostport;
if(hostlen < len+1) {
std::cerr << "Hostname too long: " << hostport << std::endl;
return -1;
}
memcpy(host, hostport, len);
host[len] = '\0';
errno = 0;
unsigned long d = strtoul(p+1, 0, 10);
if(errno == 0 && 1 <= d && d <= std::numeric_limits<uint16_t>::max()) {
*port_ptr = d;
return 0;
} else {
std::cerr << "Port is invalid: " << p+1 << std::endl;
return -1;
}
}
} // namespace
void set_config_str(char **destp, const char *val)
{
if(*destp) {
free(*destp);
}
*destp = strdup(val);
}
int parse_config(const char *opt, const char *optarg)
{
char host[NI_MAXHOST];
uint16_t port;
if(util::strieq(opt, SHRPX_OPT_BACKEND)) {
if(split_host_port(host, sizeof(host), &port, optarg) == -1) {
return -1;
} else {
set_config_str(&mod_config()->downstream_host, host);
mod_config()->downstream_port = port;
}
} else if(util::strieq(opt, SHRPX_OPT_FRONTEND)) {
if(split_host_port(host, sizeof(host), &port, optarg) == -1) {
return -1;
} else {
set_config_str(&mod_config()->host, host);
mod_config()->port = port;
}
} else if(util::strieq(opt, SHRPX_OPT_WORKERS)) {
mod_config()->num_worker = strtol(optarg, 0, 10);
} else if(util::strieq(opt, SHRPX_OPT_SPDY_MAX_CONCURRENT_STREAMS)) {
mod_config()->spdy_max_concurrent_streams = strtol(optarg, 0, 10);
} else if(util::strieq(opt, SHRPX_OPT_LOG_LEVEL)) {
if(Log::set_severity_level_by_name(optarg) == -1) {
std::cerr << "Invalid severity level: " << optarg << std::endl;
return -1;
}
} else if(util::strieq(opt, SHRPX_OPT_DAEMON)) {
mod_config()->daemon = util::strieq(optarg, "yes");
} else if(util::strieq(opt, SHRPX_OPT_SPDY_PROXY)) {
mod_config()->spdy_proxy = util::strieq(optarg, "yes");
} else if(util::strieq(opt, SHRPX_OPT_ADD_X_FORWARDED_FOR)) {
mod_config()->add_x_forwarded_for = util::strieq(optarg, "yes");
} else if(util::strieq(opt, SHRPX_OPT_FRONTEND_SPDY_READ_TIMEOUT)) {
timeval tv = {strtol(optarg, 0, 10), 0};
mod_config()->spdy_upstream_read_timeout = tv;
} else if(util::strieq(opt, SHRPX_OPT_FRONTEND_READ_TIMEOUT)) {
timeval tv = {strtol(optarg, 0, 10), 0};
mod_config()->upstream_read_timeout = tv;
} else if(util::strieq(opt, SHRPX_OPT_FRONTEND_WRITE_TIMEOUT)) {
timeval tv = {strtol(optarg, 0, 10), 0};
mod_config()->upstream_write_timeout = tv;
} else if(util::strieq(opt, SHRPX_OPT_BACKEND_READ_TIMEOUT)) {
timeval tv = {strtol(optarg, 0, 10), 0};
mod_config()->downstream_read_timeout = tv;
} else if(util::strieq(opt, SHRPX_OPT_BACKEND_WRITE_TIMEOUT)) {
timeval tv = {strtol(optarg, 0, 10), 0};
mod_config()->downstream_write_timeout = tv;
} else if(util::strieq(opt, SHRPX_OPT_ACCESSLOG)) {
mod_config()->accesslog = util::strieq(optarg, "yes");
} else if(util::strieq(opt, SHRPX_OPT_BACKEND_KEEP_ALIVE_TIMEOUT)) {
timeval tv = {strtol(optarg, 0, 10), 0};
mod_config()->downstream_idle_read_timeout = tv;
} else if(util::strieq(opt, SHRPX_OPT_FRONTEND_SPDY_WINDOW_BITS)) {
errno = 0;
unsigned long int n = strtoul(optarg, 0, 10);
if(errno == 0 && n < 31) {
mod_config()->spdy_upstream_window_bits = n;
} else {
std::cerr << "-w: specify the integer in the range [0, 30], inclusive"
<< std::endl;
return -1;
}
} else if(util::strieq(opt, SHRPX_OPT_PID_FILE)) {
set_config_str(&mod_config()->pid_file, optarg);
} else if(util::strieq(opt, SHRPX_OPT_USER)) {
passwd *pwd = getpwnam(optarg);
if(pwd == 0) {
std::cerr << "--user: failed to get uid from " << optarg
<< ": " << strerror(errno) << std::endl;
return -1;
}
mod_config()->uid = pwd->pw_uid;
mod_config()->gid = pwd->pw_gid;
} else if(util::strieq(opt, SHRPX_OPT_PRIVATE_KEY_FILE)) {
set_config_str(&mod_config()->private_key_file, optarg);
} else if(util::strieq(opt, SHRPX_OPT_CERTIFICATE_FILE)) {
set_config_str(&mod_config()->cert_file, optarg);
} else if(util::strieq(opt, "conf")) {
std::cerr << "conf is ignored" << std::endl;
} else {
std::cerr << "Unknown option: " << opt << std::endl;
return -1;
}
return 0;
}
int load_config(const char *filename)
{
std::ifstream in(filename, std::ios::binary);
if(!in) {
std::cerr << "Could not open config file " << filename << std::endl;
return -1;
}
std::string line;
int linenum = 0;
while(std::getline(in, line)) {
++linenum;
if(line.empty() || line[0] == '#') {
continue;
}
size_t i;
size_t size = line.size();
for(i = 0; i < size && line[i] != '='; ++i);
if(i == size) {
std::cerr << "Bad configuration format at line " << linenum << std::endl;
return -1;
}
line[i] = '\0';
const char *s = line.c_str();
if(parse_config(s, s+i+1) == -1) {
return -1;
}
}
return 0;
}
} // namespace shrpx
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