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server.c
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server.c
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/*
* Copyright 2011 Jeff Garzik
* Copyright 2009 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include "autotools-config.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <locale.h>
#include <unistd.h>
#include <signal.h>
#include <syslog.h>
#include <fcntl.h>
#include <string.h>
#include <zlib.h>
#include <netdb.h>
#include <stdarg.h>
#include <openssl/sha.h>
#include <argp.h>
#include "server.h"
const char *argp_program_version = PACKAGE_VERSION;
enum {
CLI_RD_TIMEOUT = 30,
CLI_MAX_MSG = (1 * 1024 * 1024),
SFL_FOREGROUND = (1 << 0), /* run in foreground */
};
static struct argp_option options[] = {
{ "config", 'c', "FILE", 0,
"Read master configuration from FILE (default: server.json)" },
{ "debug", 'D', "LEVEL", 0,
"Set debug output to LEVEL (0 = off, 2 = max)" },
{ "stderr", 'E', NULL, 0,
"Switch the log to standard error" },
{ "foreground", 'F', NULL, 0,
"Run in foreground, do not fork" },
{ "pid", 'P', "FILE", 0,
"Write daemon process id to FILE" },
{ "strict-free", 1001, NULL, 0,
"For memory-checker runs. When shutting down server, free local "
"heap, rather than simply exit(2)ing and letting OS clean up." },
{ }
};
static const char doc[] =
PROGRAM_NAME " - push-mining proxy daemon";
static error_t parse_opt (int key, char *arg, struct argp_state *state);
static const struct argp argp = { options, parse_opt, NULL, doc };
static bool server_running = true;
static bool dump_stats;
static bool reopen_logs;
static bool initiate_lp_flush;
bool use_syslog = true;
static bool strict_free = false;
int debugging = 0;
struct timeval current_time;
struct server srv = {
.config = "server.json",
.pid_fd = -1,
.req_fd = -1,
.share_fd = -1,
#if defined(HAVE_SQLITE3)
.db_eng = SDB_SQLITE,
.db_ops = &sqlite_db_ops,
#elif defined(HAVE_MYSQL)
.db_eng = SDB_MYSQL,
.db_ops = &mysql_db_ops,
#elif defined(HAVE_POSTGRESQL)
.db_eng = SDB_POSTGRESQL,
.db_ops = &postgresql_db_ops,
#else
#error("No valid database engines defined")
#endif
.db_port = -1,
.cred_expire = 75,
.work_expire = 120,
};
static error_t parse_opt (int key, char *arg, struct argp_state *state)
{
int v;
switch(key) {
case 'c':
srv.config = arg;
break;
case 'D':
v = atoi(arg);
if (v < 0 || v > 2) {
fprintf(stderr, "invalid debug level: '%s'\n", arg);
argp_usage(state);
}
debugging = v;
break;
case 'E':
use_syslog = false;
break;
case 'F':
srv.flags |= SFL_FOREGROUND;
break;
case 'P':
srv.pid_file = strdup(arg);
break;
case 1001: /* --strict-free */
strict_free = true;
break;
case ARGP_KEY_ARG:
argp_usage(state); /* too many args */
break;
case ARGP_KEY_END:
break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
static json_t *cjson_decode(void *buf, size_t buflen)
{
json_t *obj = NULL;
json_error_t err;
void *obj_unc = NULL;
unsigned long dest_len;
void *comp_p;
uint32_t unc_len;
unsigned char zero = 0;
if (buflen < 6)
return NULL;
/* look at first 32 bits of buffer, which contains uncompressed len */
unc_len = le32toh(*((uint32_t *)buf));
if (unc_len > CLI_MAX_MSG)
return NULL;
/* alloc buffer for uncompressed data */
obj_unc = malloc(unc_len + 1);
if (!obj_unc)
return NULL;
dest_len = unc_len;
/* decompress buffer (excluding first 32 bits) */
comp_p = buf + 4;
if (uncompress(obj_unc, &dest_len, comp_p, buflen - 4) != Z_OK)
goto out;
if (dest_len != unc_len)
goto out;
memcpy(obj_unc + unc_len, &zero, 1); /* null terminate */
/* attempt JSON decode of buffer */
obj = JSON_LOADS(obj_unc, &err);
out:
free(obj_unc);
return obj;
}
bool cjson_encode(unsigned char op, const char *obj_unc,
void **buf_out, size_t *buflen_out)
{
void *obj_comp, *raw_msg = NULL;
uint32_t *obj_clen;
struct ubbp_header *msg_hdr;
unsigned long comp_len;
size_t payload_len;
size_t unc_len = strlen(obj_unc);
*buf_out = NULL;
*buflen_out = 0;
/* create buffer for entire msg (header + contents), assuming
* a worst case where compressed data may be slightly larger than
* input data
*/
raw_msg = calloc(1, unc_len + 64);
if (!raw_msg)
goto err_out;
/* get ptr to uncompressed-length value, which follows header */
obj_clen = raw_msg + sizeof(struct ubbp_header);
/* get ptr to compressed data area, which follows hdr & uncompr. len */
obj_comp = raw_msg + sizeof(struct ubbp_header) + sizeof(uint32_t);
/* compress data */
comp_len = unc_len + 64 -
(sizeof(struct ubbp_header) + sizeof(uint32_t));
if (compress2(obj_comp, &comp_len,
(Bytef *) obj_unc, unc_len, 9) != Z_OK)
goto err_out;
/* fill in UBBP message header */
msg_hdr = raw_msg;
memcpy(msg_hdr->magic, PUSHPOOL_UBBP_MAGIC, 4);
payload_len = sizeof(uint32_t) + comp_len;
msg_hdr->op_size = htole32(UBBP_OP_SIZE(op, payload_len));
/* fill in uncompressed length */
*obj_clen = htole32(unc_len);
/* return entire message */
*buf_out = raw_msg;
*buflen_out = sizeof(struct ubbp_header) + payload_len;
return true;
err_out:
free(raw_msg);
return false;
}
bool cjson_encode_obj(unsigned char op, const json_t *obj,
void **buf_out, size_t *buflen_out)
{
char *obj_unc;
bool rc;
*buf_out = NULL;
*buflen_out = 0;
/* encode JSON object to flat string */
obj_unc = json_dumps(obj, JSON_COMPACT | JSON_SORT_KEYS);
if (!obj_unc)
return false;
/* build message, with compressed JSON payload */
rc = cjson_encode(op, obj_unc, buf_out, buflen_out);
free(obj_unc);
return rc;
}
static void cli_free(struct client *cli)
{
if (!cli)
return;
if (cli->ev_mask && (event_del(&cli->ev) < 0))
applog(LOG_ERR, "TCP cli poll del failed");
/* clean up network socket */
if (cli->fd >= 0) {
if (close(cli->fd) < 0)
syslogerr("close(2) TCP client socket");
}
if (debugging)
applog(LOG_DEBUG, "client %s ended", cli->addr_host);
tcp_read_free(&cli->rst);
free(cli->msg);
memset(cli, 0, sizeof(*cli)); /* poison */
free(cli);
}
static struct client *cli_alloc(int fd, struct sockaddr_in6 *addr,
socklen_t addrlen, bool have_http)
{
struct client *cli;
cli = calloc(1, sizeof(*cli));
if (!cli)
return NULL;
cli->fd = fd;
memcpy(&cli->addr, addr, addrlen);
tcp_read_init(&cli->rst, cli->fd, cli);
return cli;
}
bool cli_send_msg(struct client *cli, const void *msg, size_t msg_len)
{
ssize_t wrc;
/* send packet to client. fail on all cases where
* message is not transferred entirely into the
* socket buffer on this write(2) call
*/
wrc = write(cli->fd, msg, msg_len);
return (wrc == msg_len);
}
bool cli_send_hdronly(struct client *cli, unsigned char op)
{
struct ubbp_header hdr;
memcpy(&hdr.magic, PUSHPOOL_UBBP_MAGIC, 4);
hdr.op_size = htole32(UBBP_OP_SIZE(op, 0));
return cli_send_msg(cli, &hdr, sizeof(hdr));
}
bool cli_send_obj(struct client *cli, unsigned char op, const json_t *obj)
{
void *raw_msg = NULL;
size_t msg_len;
bool rc = false;
/* create compressed message packet */
if (!cjson_encode_obj(op, obj, &raw_msg, &msg_len))
goto out;
rc = cli_send_msg(cli, raw_msg, msg_len);
out:
free(raw_msg);
return rc;
}
bool cli_send_err(struct client *cli, unsigned char op,
int err_code, const char *err_msg)
{
char *s = NULL;
void *raw_msg = NULL;
size_t msg_len;
bool rc = false;
/* build JSON error string, strangely similar to JSON-RPC */
if (asprintf(&s, "{ \"error\" : { \"code\":%d, \"message\":\"%s\"}}",
err_code, err_msg) < 0) {
applog(LOG_ERR, "OOM");
return false;
}
/* create compressed message packet */
if (!cjson_encode(op, s, &raw_msg, &msg_len))
goto out;
rc = cli_send_msg(cli, raw_msg, msg_len);
out:
free(raw_msg);
free(s);
return rc;
}
static bool cli_msg(struct client *cli)
{
uint32_t op = UBBP_OP(cli->ubbp.op_size);
uint32_t size = UBBP_SIZE(cli->ubbp.op_size);
json_t *obj = NULL;
bool rc = false;
/* LOGIN must always be first msg from client */
if (!cli->logged_in && (op != BC_OP_LOGIN))
return false;
else if (cli->logged_in && (op == BC_OP_LOGIN))
return false;
/* decode JSON messages, for opcodes that require it */
switch (op) {
case BC_OP_LOGIN:
case BC_OP_CONFIG: {
uint32_t cjson_len = size;
/* LOGIN is special; it has a sha256 digest
* following the compressed JSON bytes
*/
if (op == BC_OP_LOGIN) {
if (size <= SHA256_DIGEST_LENGTH)
return false;
cjson_len -= SHA256_DIGEST_LENGTH;
}
obj = cjson_decode(cli->msg, cjson_len);
if (!json_is_object(obj))
goto out;
break;
}
default:
/* do nothing */
break;
}
/* message processing, determined by opcode */
switch (op) {
case BC_OP_NOP:
if (size > 0)
break;
rc = cli_send_hdronly(cli, BC_OP_NOP);
break;
case BC_OP_LOGIN:
rc = cli_op_login(cli, obj, size);
break;
case BC_OP_CONFIG:
rc = cli_op_config(cli, obj);
break;
case BC_OP_WORK_GET:
rc = cli_op_work_get(cli, size);
break;
case BC_OP_WORK_SUBMIT:
rc = cli_op_work_submit(cli, size);
break;
default:
/* invalid op. fall through to function return stmt */
break;
}
out:
json_decref(obj);
return rc;
}
static bool cli_read_msg(void *rst_priv, void *priv,
unsigned int buflen, bool success)
{
struct client *cli = rst_priv;
if (!success)
return false;
return cli_msg(cli);
}
static bool cli_read_hdr(void *rst_priv, void *priv,
unsigned int buflen, bool success)
{
struct client *cli = rst_priv;
uint32_t size;
if (!success)
return false;
if (memcmp(cli->ubbp.magic, PUSHPOOL_UBBP_MAGIC, 4))
return false;
cli->ubbp.op_size = le32toh(cli->ubbp.op_size);
size = UBBP_SIZE(cli->ubbp.op_size);
if (size > CLI_MAX_MSG)
return false;
if (size == 0)
return cli_msg(cli);
cli->msg = malloc(size);
if (!cli->msg)
return false;
return tcp_read(&cli->rst, cli->msg, size, cli_read_msg, NULL);
}
static void tcp_cli_event(int fd, short events, void *userdata)
{
struct client *cli = userdata;
bool ok = true;
if (events & EV_READ)
ok = tcp_read_runq(&cli->rst);
if (events & EV_TIMEOUT)
ok = false;
if (!ok)
cli_free(cli);
}
static void tcp_srv_event(int fd, short events, void *userdata)
{
struct server_socket *sock = userdata;
struct sockaddr_in6 addr;
socklen_t addrlen = sizeof(struct sockaddr_in6);
struct client *cli = NULL;
char host[64];
char port[16];
int cli_fd, on = 1;
struct timeval timeout = { CLI_RD_TIMEOUT, 0 };
/* receive TCP connection from kernel */
cli_fd = accept(sock->fd, (struct sockaddr *) &addr, &addrlen);
if (cli_fd < 0) {
syslogerr("tcp accept");
goto err_out;
}
srv.stats.tcp_accept++;
cli = cli_alloc(cli_fd, &addr, addrlen, true);
if (!cli) {
applog(LOG_ERR, "OOM");
close(cli_fd);
return;
}
/* mark non-blocking, for upcoming poll use */
if (fsetflags("tcp client", cli->fd, O_NONBLOCK) < 0)
goto err_out_fd;
/* disable delay of small output packets */
if (setsockopt(cli->fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) < 0)
applog(LOG_WARNING, "TCP_NODELAY failed: %s",
strerror(errno));
/* turn on TCP keep-alive */
on = 1;
if (setsockopt(cli->fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on)) < 0)
applog(LOG_WARNING, "SO_KEEPALIVE failed: %s",
strerror(errno));
event_set(&cli->ev, cli->fd, EV_READ | EV_PERSIST,
tcp_cli_event, cli);
/* pretty-print incoming cxn info */
getnameinfo((struct sockaddr *) &cli->addr, addrlen,
host, sizeof(host), port, sizeof(port),
NI_NUMERICHOST | NI_NUMERICSERV);
host[sizeof(host) - 1] = 0;
port[sizeof(port) - 1] = 0;
applog(LOG_INFO, "client host %s port %s connected%s", host, port,
false ? " via SSL" : "");
strcpy(cli->addr_host, host);
strcpy(cli->addr_port, port);
if (event_add(&cli->ev, &timeout) < 0) {
applog(LOG_ERR, "unable to ready cli fd for polling");
goto err_out_fd;
}
cli->ev_mask = EV_READ;
if (!tcp_read(&cli->rst, &cli->ubbp, sizeof(cli->ubbp),
cli_read_hdr, NULL))
goto err_out_fd;
return;
err_out_fd:
err_out:
cli_free(cli);
}
static bool valid_auth_hdr(const char *hdr, char *username_out)
{
char *t_type = NULL;
char *t_b64 = NULL;
char *t_userpass = NULL, *colon, *user, *pass;
char *pass_db = NULL;
bool rc = false;
size_t hdrlen = strlen(hdr);
size_t bin_len = 0;
void *bin = NULL;
t_type = calloc(1, hdrlen + 1);
t_b64 = calloc(1, hdrlen + 1);
t_userpass = calloc(1, hdrlen + 1);
if (!t_type || !t_b64 || !t_userpass)
goto out;
if (sscanf(hdr, "%s %s", t_type, t_b64) != 2)
goto out;
/* auth type Basic */
if (strcasecmp(t_type, "basic"))
goto out;
/* decode base64 token */
bin = g_base64_decode(t_b64, &bin_len);
if (!bin)
goto out;
if (bin_len > hdrlen) /* impossible */
goto out;
memcpy(t_userpass, bin, bin_len);
/* split user:pass */
colon = strchr(t_userpass, ':');
if (!colon)
goto out;
*colon = 0;
user = t_userpass;
pass = colon + 1;
/* password database authentication check */
pass_db = pwdb_lookup(user);
if (!pass_db || (strcmp(pass, pass_db) && *pass_db != '\0'))
goto out;
rc = true;
strncpy(username_out, user, 64);
username_out[64] = 0;
out:
free(pass_db);
free(bin);
free(t_type);
free(t_b64);
free(t_userpass);
return rc;
}
static void reqlog(const char *rem_host, const char *username,
const char *uri)
{
struct timeval tv = { };
char *f;
ssize_t wrc;
struct tm tm;
if (srv.req_fd < 0)
return;
gettimeofday(&tv, NULL);
gmtime_r(&tv.tv_sec, &tm);
if (asprintf(&f, "[%d-%02d-%02d %02d:%02d:%02d.%llu] %s %s \"%s\"\n",
tm.tm_year + 1900,
tm.tm_mon + 1,
tm.tm_mday,
tm.tm_hour,
tm.tm_min,
tm.tm_sec,
(unsigned long long) tv.tv_usec,
(rem_host && *rem_host) ? rem_host : "-",
(username && *username) ? username : "-",
(uri && *uri) ? uri : "") < 0)
return;
wrc = write(srv.req_fd, f, strlen(f));
if (wrc != strlen(f))
syslogerr(srv.req_log);
free(f);
}
void sharelog(const char *rem_host, const char *username,
const char *our_result, const char *upstream_result,
const char *reason, const char *solution)
{
struct timeval tv = { };
char *f;
ssize_t wrc;
struct tm tm;
if (srv.db_sharelog && srv.db_ops->sharelog != NULL)
srv.db_ops->sharelog(rem_host, username, our_result,
upstream_result, reason, solution);
if (srv.share_fd < 0)
return;
gettimeofday(&tv, NULL);
gmtime_r(&tv.tv_sec, &tm);
if (asprintf(&f, "[%d-%02d-%02d %02d:%02d:%02.6f] %s %s %s %s %s %s\n",
tm.tm_year + 1900,
tm.tm_mon + 1,
tm.tm_mday,
tm.tm_hour,
tm.tm_min,
tm.tm_sec +
tv.tv_usec/1000000.0,
(rem_host && *rem_host) ? rem_host : "-",
(username && *username) ? username : "-",
(our_result && *our_result) ? our_result : "-",
(upstream_result && *upstream_result) ? upstream_result : "-",
(reason && *reason) ? reason : "-",
(solution && *solution) ? solution : "-") < 0)
return;
wrc = write(srv.share_fd, f, strlen(f));
if (wrc != strlen(f))
syslogerr(srv.share_log);
free(f);
}
static void http_handle_req(struct evhttp_request *req, bool longpoll)
{
const char *clen_str, *auth;
char *body_str;
char username[65] = "";
void *body, *reply = NULL;
int clen = 0;
unsigned int reply_len = 0;
json_t *jreq;
json_error_t jerr;
bool rc;
struct evbuffer *evbuf;
auth = evhttp_find_header(req->input_headers, "Authorization");
if (!auth) {
reqlog(req->remote_host, username, req->uri);
evhttp_add_header(req->output_headers, "WWW-Authenticate", "Basic realm=\"pushpool\"");
evhttp_send_reply(req, 401, "not authorized", NULL);
return;
}
if (!valid_auth_hdr(auth, username)) {
reqlog(req->remote_host, username, req->uri);
evhttp_send_reply(req, 403, "access forbidden", NULL);
return;
}
if (!longpoll) {
clen_str = evhttp_find_header(req->input_headers, "Content-Length");
if (clen_str)
clen = atoi(clen_str);
if (clen < 1 || clen > 999999) {
reqlog(req->remote_host, username, req->uri);
evhttp_send_reply(req, HTTP_BADREQUEST, "invalid args", NULL);
return;
}
if (EVBUFFER_LENGTH(req->input_buffer) != clen)
goto err_out_bad_req;
body = EVBUFFER_DATA(req->input_buffer);
body_str = strndup(body, clen);
if (!body_str)
goto err_out_bad_req;
} else /* long polling */
body_str = strdup("{\"method\":\"getwork\",\"params\":[],\"id\":1}");
jreq = JSON_LOADS(body_str, &jerr);
free(body_str);
if (!jreq)
goto err_out_bad_req;
rc = msg_json_rpc(req, jreq, username, &reply, &reply_len);
json_decref(jreq);
if (!rc)
goto err_out_bad_req;
evbuf = evbuffer_new();
if (!evbuf) {
free(reply);
goto err_out_bad_req;
}
if (evbuffer_add(evbuf, reply, reply_len)) {
evbuffer_free(evbuf);
free(reply);
goto err_out_bad_req;
}
free(reply);
evhttp_add_header(req->output_headers,
"Content-Type", "application/json");
if (!longpoll && !srv.disable_lp)
evhttp_add_header(req->output_headers, "X-Long-Polling", "/LP");
if (!srv.disable_roll_ntime)
evhttp_add_header(req->output_headers, "X-Roll-NTime", srv.work_expire_str);
evhttp_send_reply(req, HTTP_OK, "ok", evbuf);
evbuffer_free(evbuf);
return;
err_out_bad_req:
evhttp_send_reply(req, HTTP_BADREQUEST, "invalid args", NULL);
}
static void flush_lp_waiters(void)
{
struct genlist *tmp, *iter;
elist_for_each_entry_safe(tmp, iter, &srv.lp_waiters, node) {
struct evhttp_request *req;
req = tmp->data;
http_handle_req(req, true);
elist_del(&tmp->node);
memset(tmp, 0, sizeof(*tmp));
free(tmp);
}
}
static void __http_srv_event(struct evhttp_request *req, void *arg,
bool longpoll)
{
struct server_socket *sock = arg;
const char *auth;
char username[65] = "";
/* copy X-Forwarded-For header to remote_host, if a trusted proxy provides it */
if (sock->cfg->proxy && !strcmp(req->remote_host, sock->cfg->proxy)) {
const char *hdr;
hdr = evhttp_find_header(req->input_headers, "X-Forwarded-For");
if (hdr) {
free(req->remote_host);
req->remote_host = strdup(hdr);
}
}
/* validate user authorization */
auth = evhttp_find_header(req->input_headers, "Authorization");
if (!auth) {
reqlog(req->remote_host, username, req->uri);
evhttp_add_header(req->output_headers, "WWW-Authenticate", "Basic realm=\"pushpool\"");
evhttp_send_reply(req, 401, "not authorized", NULL);
return;
}
if (!valid_auth_hdr(auth, username)) {
reqlog(req->remote_host, username, req->uri);
evhttp_send_reply(req, 403, "access forbidden", NULL);
return;
}
reqlog(req->remote_host, username, req->uri);
/* if longpoll, don't respond now, queue onto list for later */
if (longpoll) {
struct genlist *gl = calloc(1, sizeof(*gl));
if (!gl)
return;
gl->data = req;
INIT_ELIST_HEAD(&gl->node);
elist_add_tail(&gl->node, &srv.lp_waiters);
}
/* otherwise, handle immediately */
else
http_handle_req(req, false);
}
static void http_srv_event(struct evhttp_request *req, void *arg)
{
__http_srv_event(req, arg, false);
}
static void http_srv_event_lp(struct evhttp_request *req, void *arg)
{
__http_srv_event(req, arg, true);
}
static int net_write_port(const char *port_file, const char *port_str)
{
FILE *portf;
int rc;
portf = fopen(port_file, "w");
if (portf == NULL) {
rc = errno;
applog(LOG_INFO, "Cannot create port file %s: %s",
port_file, strerror(rc));
return -rc;
}
fprintf(portf, "%s\n", port_str);
fclose(portf);
return 0;
}
static void net_sock_free(struct server_socket *sock)
{
if (!sock)
return;
elist_del_init(&sock->sockets_node);
if (sock->http)
evhttp_free(sock->http);
else
event_del(&sock->ev);
if (sock->fd >= 0)
close(sock->fd);
memset(sock, 0, sizeof(*sock)); /* poison */
free(sock);
}
static void net_close(void)
{
struct server_socket *sock, *iter;
struct listen_cfg *cfg, *citer;
elist_for_each_entry_safe(sock, iter, &srv.sockets, sockets_node) {
net_sock_free(sock);
}
elist_for_each_entry_safe(cfg, citer, &srv.listeners, listeners_node) {
elist_del_init(&cfg->listeners_node);
free(cfg->host);
free(cfg->port_file);
memset(cfg, 0, sizeof(*cfg)); /* poison */
free(cfg);
}
}
static int net_open_socket(const struct listen_cfg *cfg,
int addr_fam, int sock_type, int sock_prot,
int addr_len, void *addr_ptr)
{
struct server_socket *sock;
int fd, on;
int rc;
bool have_http = (cfg->proto == LP_HTTP_JSON);
fd = socket(addr_fam, sock_type, sock_prot);
if (fd < 0) {
rc = errno;
syslogerr("tcp socket");
return -rc;
}
on = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0) {
syslogerr("setsockopt(SO_REUSEADDR)");
rc = -errno;
goto err_out_fd;
}
if (bind(fd, addr_ptr, addr_len) < 0) {
syslogerr("tcp bind");
rc = -errno;
goto err_out_fd;
}
if (listen(fd, 100) < 0) {
syslogerr("tcp listen");
rc = -errno;
goto err_out_fd;
}
rc = fsetflags("tcp server", fd, O_NONBLOCK);
if (rc)
goto err_out_fd;
sock = calloc(1, sizeof(*sock));
if (!sock) {
rc = -ENOMEM;
goto err_out_fd;
}
INIT_ELIST_HEAD(&sock->sockets_node);
sock->fd = fd;
sock->cfg = cfg;
if (have_http) {
sock->http = evhttp_new(srv.evbase_main);
if (!sock->http)
goto err_out_sock;
if (evhttp_accept_socket(sock->http, fd) < 0) {
evhttp_free(sock->http);
goto err_out_sock;
}
evhttp_set_cb(sock->http, "/",
http_srv_event, sock);
if (!srv.disable_lp)
evhttp_set_cb(sock->http, "/LP",
http_srv_event_lp,sock);
} else {
event_set(&sock->ev, fd, EV_READ | EV_PERSIST,
tcp_srv_event, sock);
if (event_add(&sock->ev, NULL) < 0)
goto err_out_sock;
}
elist_add_tail(&sock->sockets_node, &srv.sockets);
return fd;