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rspamd_control.c
1259 lines (1098 loc) · 31.6 KB
/
rspamd_control.c
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/*-
* Copyright 2016 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include "rspamd.h"
#include "rspamd_control.h"
#include "worker_util.h"
#include "libserver/http/http_connection.h"
#include "libserver/http/http_private.h"
#include "libutil/libev_helper.h"
#include "unix-std.h"
#include "utlist.h"
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
static ev_tstamp io_timeout = 30.0;
static ev_tstamp worker_io_timeout = 0.5;
struct rspamd_control_session;
struct rspamd_control_reply_elt {
struct rspamd_control_reply reply;
struct rspamd_io_ev ev;
struct ev_loop *event_loop;
GQuark wrk_type;
pid_t wrk_pid;
gpointer ud;
gint attached_fd;
GHashTable *pending_elts;
struct rspamd_control_reply_elt *prev, *next;
};
struct rspamd_control_session {
gint fd;
struct ev_loop *event_loop;
struct rspamd_main *rspamd_main;
struct rspamd_http_connection *conn;
struct rspamd_control_command cmd;
struct rspamd_control_reply_elt *replies;
rspamd_inet_addr_t *addr;
guint replies_remain;
gboolean is_reply;
};
static const struct rspamd_control_cmd_match {
rspamd_ftok_t name;
enum rspamd_control_type type;
} cmd_matches[] = {
{
.name = {
.begin = "/stat",
.len = sizeof ("/stat") - 1
},
.type = RSPAMD_CONTROL_STAT
},
{
.name = {
.begin = "/reload",
.len = sizeof ("/reload") - 1
},
.type = RSPAMD_CONTROL_RELOAD
},
{
.name = {
.begin = "/reresolve",
.len = sizeof ("/reresolve") - 1
},
.type = RSPAMD_CONTROL_RERESOLVE
},
{
.name = {
.begin = "/recompile",
.len = sizeof ("/recompile") - 1
},
.type = RSPAMD_CONTROL_RECOMPILE
},
{
.name = {
.begin = "/fuzzystat",
.len = sizeof ("/fuzzystat") - 1
},
.type = RSPAMD_CONTROL_FUZZY_STAT
},
{
.name = {
.begin = "/fuzzysync",
.len = sizeof ("/fuzzysync") - 1
},
.type = RSPAMD_CONTROL_FUZZY_SYNC
},
};
static void rspamd_control_ignore_io_handler (int fd, short what, void *ud);
static void
rspamd_control_stop_pending (struct rspamd_control_reply_elt *elt)
{
GHashTable *htb;
/* It stops event and frees hash */
htb = elt->pending_elts;
g_hash_table_remove (elt->pending_elts, elt);
/* Release hash reference */
g_hash_table_unref (htb);
}
void
rspamd_control_send_error (struct rspamd_control_session *session,
gint code, const gchar *error_msg, ...)
{
struct rspamd_http_message *msg;
rspamd_fstring_t *reply;
va_list args;
msg = rspamd_http_new_message (HTTP_RESPONSE);
va_start (args, error_msg);
msg->status = rspamd_fstring_new ();
rspamd_vprintf_fstring (&msg->status, error_msg, args);
va_end (args);
msg->date = time (NULL);
msg->code = code;
reply = rspamd_fstring_sized_new (msg->status->len + 16);
rspamd_printf_fstring (&reply, "{\"error\":\"%V\"}", msg->status);
rspamd_http_message_set_body_from_fstring_steal (msg, reply);
rspamd_http_connection_reset (session->conn);
rspamd_http_connection_write_message (session->conn,
msg,
NULL,
"application/json",
session,
io_timeout);
}
static void
rspamd_control_send_ucl (struct rspamd_control_session *session,
ucl_object_t *obj)
{
struct rspamd_http_message *msg;
rspamd_fstring_t *reply;
msg = rspamd_http_new_message (HTTP_RESPONSE);
msg->date = time (NULL);
msg->code = 200;
msg->status = rspamd_fstring_new_init ("OK", 2);
reply = rspamd_fstring_sized_new (BUFSIZ);
rspamd_ucl_emit_fstring (obj, UCL_EMIT_JSON_COMPACT, &reply);
rspamd_http_message_set_body_from_fstring_steal (msg, reply);
rspamd_http_connection_reset (session->conn);
rspamd_http_connection_write_message (session->conn,
msg,
NULL,
"application/json",
session,
io_timeout);
}
static void
rspamd_control_connection_close (struct rspamd_control_session *session)
{
struct rspamd_control_reply_elt *elt, *telt;
struct rspamd_main *rspamd_main;
rspamd_main = session->rspamd_main;
msg_info_main ("finished connection from %s",
rspamd_inet_address_to_string (session->addr));
DL_FOREACH_SAFE (session->replies, elt, telt) {
rspamd_control_stop_pending (elt);
}
rspamd_inet_address_free (session->addr);
rspamd_http_connection_unref (session->conn);
close (session->fd);
g_free (session);
}
static void
rspamd_control_write_reply (struct rspamd_control_session *session)
{
ucl_object_t *rep, *cur, *workers;
struct rspamd_control_reply_elt *elt;
gchar tmpbuf[64];
gdouble total_utime = 0, total_systime = 0;
struct ucl_parser *parser;
guint total_conns = 0;
rep = ucl_object_typed_new (UCL_OBJECT);
workers = ucl_object_typed_new (UCL_OBJECT);
DL_FOREACH (session->replies, elt) {
/* Skip incompatible worker for fuzzy_stat */
if ((session->cmd.type == RSPAMD_CONTROL_FUZZY_STAT ||
session->cmd.type == RSPAMD_CONTROL_FUZZY_SYNC) &&
elt->wrk_type != g_quark_from_static_string ("fuzzy")) {
continue;
}
rspamd_snprintf (tmpbuf, sizeof (tmpbuf), "%P", elt->wrk_pid);
cur = ucl_object_typed_new (UCL_OBJECT);
ucl_object_insert_key (cur, ucl_object_fromstring (g_quark_to_string (
elt->wrk_type)), "type", 0, false);
switch (session->cmd.type) {
case RSPAMD_CONTROL_STAT:
ucl_object_insert_key (cur, ucl_object_fromint (
elt->reply.reply.stat.conns), "conns", 0, false);
ucl_object_insert_key (cur, ucl_object_fromdouble (
elt->reply.reply.stat.utime), "utime", 0, false);
ucl_object_insert_key (cur, ucl_object_fromdouble (
elt->reply.reply.stat.systime), "systime", 0, false);
ucl_object_insert_key (cur, ucl_object_fromdouble (
elt->reply.reply.stat.uptime), "uptime", 0, false);
ucl_object_insert_key (cur, ucl_object_fromint (
elt->reply.reply.stat.maxrss), "maxrss", 0, false);
total_utime += elt->reply.reply.stat.utime;
total_systime += elt->reply.reply.stat.systime;
total_conns += elt->reply.reply.stat.conns;
break;
case RSPAMD_CONTROL_RELOAD:
ucl_object_insert_key (cur, ucl_object_fromint (
elt->reply.reply.reload.status), "status", 0, false);
break;
case RSPAMD_CONTROL_RECOMPILE:
ucl_object_insert_key (cur, ucl_object_fromint (
elt->reply.reply.recompile.status), "status", 0, false);
break;
case RSPAMD_CONTROL_RERESOLVE:
ucl_object_insert_key (cur, ucl_object_fromint (
elt->reply.reply.reresolve.status), "status", 0, false);
break;
case RSPAMD_CONTROL_FUZZY_STAT:
if (elt->attached_fd != -1) {
/* We have some data to parse */
parser = ucl_parser_new (0);
ucl_object_insert_key (cur,
ucl_object_fromint (
elt->reply.reply.fuzzy_stat.status),
"status",
0,
false);
if (ucl_parser_add_fd (parser, elt->attached_fd)) {
ucl_object_insert_key (cur, ucl_parser_get_object (parser),
"data", 0, false);
ucl_parser_free (parser);
}
else {
ucl_object_insert_key (cur, ucl_object_fromstring (
ucl_parser_get_error (parser)), "error", 0, false);
ucl_parser_free (parser);
}
ucl_object_insert_key (cur,
ucl_object_fromlstring (
elt->reply.reply.fuzzy_stat.storage_id,
MEMPOOL_UID_LEN - 1),
"id",
0,
false);
}
else {
ucl_object_insert_key (cur,
ucl_object_fromstring ("missing file"),
"error",
0,
false);
ucl_object_insert_key (cur,
ucl_object_fromint (
elt->reply.reply.fuzzy_stat.status),
"status",
0,
false);
}
break;
case RSPAMD_CONTROL_FUZZY_SYNC:
ucl_object_insert_key (cur, ucl_object_fromint (
elt->reply.reply.fuzzy_sync.status), "status", 0, false);
break;
default:
break;
}
if (elt->attached_fd != -1) {
close (elt->attached_fd);
elt->attached_fd = -1;
}
ucl_object_insert_key (workers, cur, tmpbuf, 0, true);
}
ucl_object_insert_key (rep, workers, "workers", 0, false);
if (session->cmd.type == RSPAMD_CONTROL_STAT) {
/* Total stats */
cur = ucl_object_typed_new (UCL_OBJECT);
ucl_object_insert_key (cur, ucl_object_fromint (
total_conns), "conns", 0, false);
ucl_object_insert_key (cur, ucl_object_fromdouble (
total_utime), "utime", 0, false);
ucl_object_insert_key (cur, ucl_object_fromdouble (
total_systime), "systime", 0, false);
ucl_object_insert_key (rep, cur, "total", 0, false);
}
rspamd_control_send_ucl (session, rep);
ucl_object_unref (rep);
}
static void
rspamd_control_wrk_io (gint fd, short what, gpointer ud)
{
struct rspamd_control_reply_elt *elt = ud;
struct rspamd_control_session *session;
guchar fdspace[CMSG_SPACE(sizeof (int))];
struct iovec iov;
struct msghdr msg;
gssize r;
session = elt->ud;
elt->attached_fd = -1;
if (what == EV_READ) {
iov.iov_base = &elt->reply;
iov.iov_len = sizeof (elt->reply);
memset (&msg, 0, sizeof (msg));
msg.msg_control = fdspace;
msg.msg_controllen = sizeof (fdspace);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
r = recvmsg (fd, &msg, 0);
if (r == -1) {
msg_err ("cannot read reply from the worker %P (%s): %s",
elt->wrk_pid, g_quark_to_string (elt->wrk_type),
strerror (errno));
}
else if (r >= (gssize)sizeof (elt->reply)) {
if (msg.msg_controllen >= CMSG_LEN (sizeof (int))) {
elt->attached_fd = *(int *) CMSG_DATA(CMSG_FIRSTHDR (&msg));
}
}
}
else {
/* Timeout waiting */
msg_warn ("timeout waiting reply from %P (%s)",
elt->wrk_pid, g_quark_to_string (elt->wrk_type));
}
session->replies_remain --;
rspamd_ev_watcher_stop (session->event_loop,
&elt->ev);
if (session->replies_remain == 0) {
rspamd_control_write_reply (session);
}
}
static void
rspamd_control_error_handler (struct rspamd_http_connection *conn, GError *err)
{
struct rspamd_control_session *session = conn->ud;
struct rspamd_main *rspamd_main;
rspamd_main = session->rspamd_main;
if (!session->is_reply) {
msg_info_main ("abnormally closing control connection: %e", err);
session->is_reply = TRUE;
rspamd_control_send_error (session, err->code, "%s", err->message);
}
else {
rspamd_control_connection_close (session);
}
}
void
rspamd_pending_control_free (gpointer p)
{
struct rspamd_control_reply_elt *rep_elt = (struct rspamd_control_reply_elt *)p;
rspamd_ev_watcher_stop (rep_elt->event_loop, &rep_elt->ev);
g_free (rep_elt);
}
static struct rspamd_control_reply_elt *
rspamd_control_broadcast_cmd (struct rspamd_main *rspamd_main,
struct rspamd_control_command *cmd,
gint attached_fd,
rspamd_ev_cb handler,
gpointer ud,
pid_t except_pid)
{
GHashTableIter it;
struct rspamd_worker *wrk;
struct rspamd_control_reply_elt *rep_elt, *res = NULL;
gpointer k, v;
struct msghdr msg;
struct cmsghdr *cmsg;
struct iovec iov;
guchar fdspace[CMSG_SPACE(sizeof (int))];
gssize r;
g_hash_table_iter_init (&it, rspamd_main->workers);
while (g_hash_table_iter_next (&it, &k, &v)) {
wrk = v;
/* No control pipe */
if (wrk->control_pipe[0] == -1) {
continue;
}
if (except_pid != 0 && wrk->pid == except_pid) {
continue;
}
/* Worker is terminating, do not bother sending stuff */
if (wrk->state == rspamd_worker_state_terminating) {
continue;
}
memset (&msg, 0, sizeof (msg));
/* Attach fd to the message */
if (attached_fd != -1) {
memset (fdspace, 0, sizeof (fdspace));
msg.msg_control = fdspace;
msg.msg_controllen = sizeof (fdspace);
cmsg = CMSG_FIRSTHDR (&msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN (sizeof (int));
memcpy (CMSG_DATA (cmsg), &attached_fd, sizeof (int));
}
iov.iov_base = cmd;
iov.iov_len = sizeof (*cmd);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
r = sendmsg (wrk->control_pipe[0], &msg, 0);
if (r == sizeof (*cmd)) {
rep_elt = g_malloc0 (sizeof (*rep_elt));
rep_elt->wrk_pid = wrk->pid;
rep_elt->wrk_type = wrk->type;
rep_elt->event_loop = rspamd_main->event_loop;
rep_elt->ud = ud;
rep_elt->pending_elts = g_hash_table_ref (wrk->control_events_pending);
rspamd_ev_watcher_init (&rep_elt->ev,
wrk->control_pipe[0],
EV_READ, handler,
rep_elt);
rspamd_ev_watcher_start (rspamd_main->event_loop,
&rep_elt->ev, worker_io_timeout);
g_hash_table_insert (wrk->control_events_pending, rep_elt, rep_elt);
DL_APPEND (res, rep_elt);
}
else {
msg_err_main ("cannot write command %d(%z) to the worker %P(%s), fd: %d: %s",
(int)cmd->type, iov.iov_len,
wrk->pid,
g_quark_to_string (wrk->type),
wrk->control_pipe[0],
strerror (errno));
}
}
return res;
}
void
rspamd_control_broadcast_srv_cmd (struct rspamd_main *rspamd_main,
struct rspamd_control_command *cmd,
pid_t except_pid)
{
rspamd_control_broadcast_cmd (rspamd_main, cmd, -1,
rspamd_control_ignore_io_handler, NULL, except_pid);
}
static gint
rspamd_control_finish_handler (struct rspamd_http_connection *conn,
struct rspamd_http_message *msg)
{
struct rspamd_control_session *session = conn->ud;
rspamd_ftok_t srch;
guint i;
gboolean found = FALSE;
struct rspamd_control_reply_elt *cur;
if (!session->is_reply) {
if (msg->url == NULL) {
rspamd_control_connection_close (session);
return 0;
}
srch.begin = msg->url->str;
srch.len = msg->url->len;
session->is_reply = TRUE;
for (i = 0; i < G_N_ELEMENTS (cmd_matches); i++) {
if (rspamd_ftok_casecmp (&srch, &cmd_matches[i].name) == 0) {
session->cmd.type = cmd_matches[i].type;
found = TRUE;
break;
}
}
if (!found) {
rspamd_control_send_error (session, 404, "Command not defined");
}
else {
/* Send command to all workers */
session->replies = rspamd_control_broadcast_cmd (
session->rspamd_main, &session->cmd, -1,
rspamd_control_wrk_io, session, 0);
DL_FOREACH (session->replies, cur) {
session->replies_remain ++;
}
}
}
else {
rspamd_control_connection_close (session);
}
return 0;
}
void
rspamd_control_process_client_socket (struct rspamd_main *rspamd_main,
gint fd, rspamd_inet_addr_t *addr)
{
struct rspamd_control_session *session;
session = g_malloc0 (sizeof (*session));
session->fd = fd;
session->conn = rspamd_http_connection_new_server (rspamd_main->http_ctx,
fd,
NULL,
rspamd_control_error_handler,
rspamd_control_finish_handler,
0);
session->rspamd_main = rspamd_main;
session->addr = addr;
session->event_loop = rspamd_main->event_loop;
rspamd_http_connection_read_message (session->conn, session,
io_timeout);
}
struct rspamd_worker_control_data {
ev_io io_ev;
struct rspamd_worker *worker;
struct ev_loop *ev_base;
struct {
rspamd_worker_control_handler handler;
gpointer ud;
} handlers[RSPAMD_CONTROL_MAX];
};
static void
rspamd_control_default_cmd_handler (gint fd,
gint attached_fd,
struct rspamd_worker_control_data *cd,
struct rspamd_control_command *cmd)
{
struct rspamd_control_reply rep;
gssize r;
struct rusage rusg;
struct rspamd_config *cfg;
struct rspamd_main *rspamd_main;
memset (&rep, 0, sizeof (rep));
rep.type = cmd->type;
rspamd_main = cd->worker->srv;
switch (cmd->type) {
case RSPAMD_CONTROL_STAT:
if (getrusage (RUSAGE_SELF, &rusg) == -1) {
msg_err_main ("cannot get rusage stats: %s",
strerror (errno));
}
else {
rep.reply.stat.utime = tv_to_double (&rusg.ru_utime);
rep.reply.stat.systime = tv_to_double (&rusg.ru_stime);
rep.reply.stat.maxrss = rusg.ru_maxrss;
}
rep.reply.stat.conns = cd->worker->nconns;
rep.reply.stat.uptime = rspamd_get_calendar_ticks () - cd->worker->start_time;
break;
case RSPAMD_CONTROL_RELOAD:
case RSPAMD_CONTROL_RECOMPILE:
case RSPAMD_CONTROL_HYPERSCAN_LOADED:
case RSPAMD_CONTROL_MONITORED_CHANGE:
case RSPAMD_CONTROL_FUZZY_STAT:
case RSPAMD_CONTROL_FUZZY_SYNC:
case RSPAMD_CONTROL_LOG_PIPE:
case RSPAMD_CONTROL_CHILD_CHANGE:
break;
case RSPAMD_CONTROL_RERESOLVE:
if (cd->worker->srv->cfg) {
REF_RETAIN (cd->worker->srv->cfg);
cfg = cd->worker->srv->cfg;
if (cfg->ups_ctx) {
msg_info_config ("reresolving upstreams");
rspamd_upstream_reresolve (cfg->ups_ctx);
}
rep.reply.reresolve.status = 0;
REF_RELEASE (cfg);
}
else {
rep.reply.reresolve.status = EINVAL;
}
break;
default:
break;
}
r = write (fd, &rep, sizeof (rep));
if (r != sizeof (rep)) {
msg_err_main ("cannot write reply to the control socket: %s",
strerror (errno));
}
if (attached_fd != -1) {
close (attached_fd);
}
}
static void
rspamd_control_default_worker_handler (EV_P_ ev_io *w, int revents)
{
struct rspamd_worker_control_data *cd =
(struct rspamd_worker_control_data *)w->data;
static struct rspamd_control_command cmd;
static struct msghdr msg;
static struct iovec iov;
static guchar fdspace[CMSG_SPACE(sizeof (int))];
gint rfd = -1;
gssize r;
iov.iov_base = &cmd;
iov.iov_len = sizeof (cmd);
memset (&msg, 0, sizeof (msg));
msg.msg_control = fdspace;
msg.msg_controllen = sizeof (fdspace);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
r = recvmsg (w->fd, &msg, 0);
if (r == -1) {
if (errno != EAGAIN && errno != EINTR) {
if (errno != ECONNRESET) {
/*
* In case of connection reset it means that main process
* has died, so do not pollute logs
*/
msg_err ("cannot read request from the control socket: %s",
strerror (errno));
}
ev_io_stop (cd->ev_base, &cd->io_ev);
close (w->fd);
}
}
else if (r < (gint)sizeof (cmd)) {
msg_err ("short read of control command: %d of %d", (gint)r,
(gint)sizeof (cmd));
if (r == 0) {
ev_io_stop (cd->ev_base, &cd->io_ev);
close (w->fd);
}
}
else if ((gint)cmd.type >= 0 && cmd.type < RSPAMD_CONTROL_MAX) {
if (msg.msg_controllen >= CMSG_LEN (sizeof (int))) {
rfd = *(int *) CMSG_DATA(CMSG_FIRSTHDR (&msg));
}
if (cd->handlers[cmd.type].handler) {
cd->handlers[cmd.type].handler (cd->worker->srv,
cd->worker,
w->fd,
rfd,
&cmd,
cd->handlers[cmd.type].ud);
}
else {
rspamd_control_default_cmd_handler (w->fd, rfd, cd, &cmd);
}
}
else {
msg_err ("unknown command: %d", (gint)cmd.type);
}
}
void
rspamd_control_worker_add_default_cmd_handlers (struct rspamd_worker *worker,
struct ev_loop *ev_base)
{
struct rspamd_worker_control_data *cd;
cd = g_malloc0 (sizeof (*cd));
cd->worker = worker;
cd->ev_base = ev_base;
cd->io_ev.data = cd;
ev_io_init (&cd->io_ev, rspamd_control_default_worker_handler,
worker->control_pipe[1], EV_READ);
ev_io_start (ev_base, &cd->io_ev);
worker->control_data = cd;
}
/**
* Register custom handler for a specific control command for this worker
*/
void
rspamd_control_worker_add_cmd_handler (struct rspamd_worker *worker,
enum rspamd_control_type type,
rspamd_worker_control_handler handler,
gpointer ud)
{
struct rspamd_worker_control_data *cd;
g_assert (type >= 0 && type < RSPAMD_CONTROL_MAX);
g_assert (handler != NULL);
g_assert (worker->control_data != NULL);
cd = worker->control_data;
cd->handlers[type].handler = handler;
cd->handlers[type].ud = ud;
}
struct rspamd_srv_reply_data {
struct rspamd_worker *worker;
struct rspamd_main *srv;
gint fd;
struct rspamd_srv_reply rep;
};
static void
rspamd_control_ignore_io_handler (int fd, short what, void *ud)
{
struct rspamd_control_reply_elt *elt =
(struct rspamd_control_reply_elt *)ud;
struct rspamd_control_reply rep;
/* At this point we just ignore replies from the workers */
(void)read (fd, &rep, sizeof (rep));
rspamd_control_stop_pending (elt);
}
static void
rspamd_control_log_pipe_io_handler (int fd, short what, void *ud)
{
struct rspamd_control_reply_elt *elt =
(struct rspamd_control_reply_elt *)ud;
struct rspamd_control_reply rep;
/* At this point we just ignore replies from the workers */
(void) read (fd, &rep, sizeof (rep));
rspamd_control_stop_pending (elt);
}
static void
rspamd_control_handle_on_fork (struct rspamd_srv_command *cmd,
struct rspamd_main *srv)
{
struct rspamd_worker *parent, *child;
parent = g_hash_table_lookup (srv->workers,
GSIZE_TO_POINTER (cmd->cmd.on_fork.ppid));
if (parent == NULL) {
msg_err ("cannot find parent for a forked process %P (%P child)",
cmd->cmd.on_fork.ppid, cmd->cmd.on_fork.cpid);
return;
}
if (cmd->cmd.on_fork.state == child_dead) {
/* We need to remove stale worker */
child = g_hash_table_lookup (srv->workers,
GSIZE_TO_POINTER (cmd->cmd.on_fork.cpid));
if (child == NULL) {
msg_err ("cannot find child for a forked process %P (%P parent)",
cmd->cmd.on_fork.cpid, cmd->cmd.on_fork.ppid);
return;
}
REF_RELEASE (child->cf);
g_hash_table_remove (srv->workers,
GSIZE_TO_POINTER (cmd->cmd.on_fork.cpid));
g_hash_table_unref (child->control_events_pending);
g_free (child);
}
else {
child = g_malloc0 (sizeof (struct rspamd_worker));
child->srv = srv;
child->type = parent->type;
child->pid = cmd->cmd.on_fork.cpid;
child->srv_pipe[0] = -1;
child->srv_pipe[1] = -1;
child->control_pipe[0] = -1;
child->control_pipe[1] = -1;
child->cf = parent->cf;
child->ppid = parent->pid;
REF_RETAIN (child->cf);
child->control_events_pending = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, rspamd_pending_control_free);
g_hash_table_insert (srv->workers,
GSIZE_TO_POINTER (cmd->cmd.on_fork.cpid), child);
}
}
static void
rspamd_srv_handler (EV_P_ ev_io *w, int revents)
{
struct rspamd_worker *worker;
static struct rspamd_srv_command cmd;
struct rspamd_main *srv;
struct rspamd_srv_reply_data *rdata;
struct msghdr msg;
struct cmsghdr *cmsg;
static struct iovec iov;
static guchar fdspace[CMSG_SPACE(sizeof (int))];
gint *spair, rfd = -1;
gchar *nid;
struct rspamd_control_command wcmd;
gssize r;
if (revents == EV_READ) {
worker = (struct rspamd_worker *)w->data;
srv = worker->srv;
iov.iov_base = &cmd;
iov.iov_len = sizeof (cmd);
memset (&msg, 0, sizeof (msg));
msg.msg_control = fdspace;
msg.msg_controllen = sizeof (fdspace);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
r = recvmsg (w->fd, &msg, 0);
if (r == -1) {
msg_err ("cannot read from worker's srv pipe: %s",
strerror (errno));
}
else if (r == 0) {
/*
* Usually this means that a worker is dead, so do not try to read
* anything
*/
ev_io_stop (EV_A_ w);
}
else if (r != sizeof (cmd)) {
msg_err ("cannot read from worker's srv pipe incomplete command: %d",
(gint) r);
}
else {
rdata = g_malloc0 (sizeof (*rdata));
rdata->worker = worker;
rdata->srv = srv;
rdata->rep.id = cmd.id;
rdata->rep.type = cmd.type;
rdata->fd = -1;
worker->tmp_data = rdata;
if (msg.msg_controllen >= CMSG_LEN (sizeof (int))) {
rfd = *(int *) CMSG_DATA(CMSG_FIRSTHDR (&msg));
}
switch (cmd.type) {
case RSPAMD_SRV_SOCKETPAIR:
spair = g_hash_table_lookup (srv->spairs, cmd.cmd.spair.pair_id);
if (spair == NULL) {
spair = g_malloc (sizeof (gint) * 2);
if (rspamd_socketpair (spair, 0) == -1) {
rdata->rep.reply.spair.code = errno;
msg_err ("cannot create socket pair: %s", strerror (errno));
}
else {
nid = g_malloc (sizeof (cmd.cmd.spair.pair_id));
memcpy (nid, cmd.cmd.spair.pair_id,
sizeof (cmd.cmd.spair.pair_id));
g_hash_table_insert (srv->spairs, nid, spair);
rdata->rep.reply.spair.code = 0;
rdata->fd = cmd.cmd.spair.pair_num ? spair[1] : spair[0];
}
}
else {
rdata->rep.reply.spair.code = 0;
rdata->fd = cmd.cmd.spair.pair_num ? spair[1] : spair[0];
}
break;
case RSPAMD_SRV_HYPERSCAN_LOADED:
/* Load RE cache to provide it for new forks */
if (rspamd_re_cache_is_hs_loaded (srv->cfg->re_cache) != RSPAMD_HYPERSCAN_LOADED_FULL ||
cmd.cmd.hs_loaded.forced) {
rspamd_re_cache_load_hyperscan (
srv->cfg->re_cache,
cmd.cmd.hs_loaded.cache_dir,
false);
}
/* Broadcast command to all workers */
memset (&wcmd, 0, sizeof (wcmd));
wcmd.type = RSPAMD_CONTROL_HYPERSCAN_LOADED;
rspamd_strlcpy (wcmd.cmd.hs_loaded.cache_dir,
cmd.cmd.hs_loaded.cache_dir,
sizeof (wcmd.cmd.hs_loaded.cache_dir));
wcmd.cmd.hs_loaded.forced = cmd.cmd.hs_loaded.forced;
rspamd_control_broadcast_cmd (srv, &wcmd, rfd,
rspamd_control_ignore_io_handler, NULL, worker->pid);
break;
case RSPAMD_SRV_MONITORED_CHANGE:
/* Broadcast command to all workers */
memset (&wcmd, 0, sizeof (wcmd));
wcmd.type = RSPAMD_CONTROL_MONITORED_CHANGE;
rspamd_strlcpy (wcmd.cmd.monitored_change.tag,
cmd.cmd.monitored_change.tag,
sizeof (wcmd.cmd.monitored_change.tag));
wcmd.cmd.monitored_change.alive = cmd.cmd.monitored_change.alive;
wcmd.cmd.monitored_change.sender = cmd.cmd.monitored_change.sender;
rspamd_control_broadcast_cmd (srv, &wcmd, rfd,
rspamd_control_ignore_io_handler, NULL, 0);
break;
case RSPAMD_SRV_LOG_PIPE:
memset (&wcmd, 0, sizeof (wcmd));
wcmd.type = RSPAMD_CONTROL_LOG_PIPE;
wcmd.cmd.log_pipe.type = cmd.cmd.log_pipe.type;
rspamd_control_broadcast_cmd (srv, &wcmd, rfd,
rspamd_control_log_pipe_io_handler, NULL, 0);
break;
case RSPAMD_SRV_ON_FORK:
rdata->rep.reply.on_fork.status = 0;
rspamd_control_handle_on_fork (&cmd, srv);
break;
case RSPAMD_SRV_HEARTBEAT:
worker->hb.last_event = ev_time ();
rdata->rep.reply.heartbeat.status = 0;
break;
default:
msg_err ("unknown command type: %d", cmd.type);
break;
}
if (rfd != -1) {
/* Close our copy to avoid descriptors leak */
close (rfd);
}
/* Now plan write event and send data back */
w->data = rdata;
ev_io_stop (EV_A_ w);
ev_io_set (w, worker->srv_pipe[0], EV_WRITE);
ev_io_start (EV_A_ w);
}
}
else if (revents == EV_WRITE) {
rdata = (struct rspamd_srv_reply_data *)w->data;