diff options
Diffstat (limited to 'src/log_helper.c')
| -rw-r--r-- | src/log_helper.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/log_helper.c b/src/log_helper.c new file mode 100644 index 000000000..63e824420 --- /dev/null +++ b/src/log_helper.c @@ -0,0 +1,156 @@ +/*- + * 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 "libutil/util.h" +#include "libserver/cfg_file.h" +#include "libserver/cfg_rcl.h" +#include "libserver/worker_util.h" +#include "libserver/rspamd_control.h" +#include "libutil/addr.h" +#include "unix-std.h" + +#ifdef HAVE_GLOB_H +#include <glob.h> +#endif + +static gpointer init_log_helper (struct rspamd_config *cfg); +static void start_log_helper (struct rspamd_worker *worker); + +worker_t log_helper_worker = { + "log_helper", /* Name */ + init_log_helper, /* Init function */ + start_log_helper, /* Start function */ + RSPAMD_WORKER_UNIQUE | RSPAMD_WORKER_KILLABLE, + SOCK_STREAM, /* TCP socket */ + RSPAMD_WORKER_VER /* Version info */ +}; + +static const guint64 rspamd_log_helper_magic = 0x1090bb46aaa74c9aULL; + +/* + * Worker's context + */ +struct log_helper_ctx { + guint64 magic; + struct rspamd_config *cfg; + struct event_base *ev_base; + struct event log_ev; + gint pair[2]; +}; + +static gpointer +init_log_helper (struct rspamd_config *cfg) +{ + struct log_helper_ctx *ctx; + GQuark type; + + type = g_quark_try_string ("log_helper"); + ctx = g_malloc0 (sizeof (*ctx)); + + ctx->magic = rspamd_log_helper_magic; + ctx->cfg = cfg; + + return ctx; +} + +static void +rspamd_log_helper_read (gint fd, short what, gpointer ud) +{ + struct log_helper_ctx *ctx = ud; + guchar buf[1024]; + gssize r; + guint32 n, i; + struct rspamd_protocol_log_message_sum *sm; + GString *out; + + r = read (fd, buf, sizeof (buf)); + + if (r >= (gssize)sizeof (struct rspamd_protocol_log_message_sum)) { + memcpy (&n, buf, sizeof (n)); + + if (n != (r - sizeof (guint32)) / sizeof (guint32)) { + msg_warn ("cannot read data from log pipe: bad length: %d elements " + "announced but %d available", n, + (r - sizeof (guint32)) / sizeof (guint32)); + } + else { + sm = g_malloc (r); + memcpy (sm, buf, r); + out = g_string_sized_new (31); + + for (i = 0; i < n; i ++) { + rspamd_printf_gstring (out, "%s%d", i == 0 ? "" : ", ", + sm->results[i]); + } + + msg_info ("got log line: %V", out); + g_string_free (out, TRUE); + g_free (sm); + } + } + else if (r == -1) { + msg_warn ("cannot read data from log pipe: %s", strerror (errno)); + } +} + +static void +rspamd_log_helper_reply_handler (struct rspamd_worker *worker, + struct rspamd_srv_reply *rep, gint rep_fd, + gpointer ud) +{ + struct log_helper_ctx *ctx = ud; + + close (ctx->pair[1]); + event_set (&ctx->log_ev, ctx->pair[0], EV_READ | EV_PERSIST, + rspamd_log_helper_read, ctx); + event_base_set (ctx->ev_base, &ctx->log_ev); + event_add (&ctx->log_ev, NULL); +} + +static void +start_log_helper (struct rspamd_worker *worker) +{ + struct log_helper_ctx *ctx = worker->ctx; + gssize r = -1; + static struct rspamd_srv_command srv_cmd; + + ctx->ev_base = rspamd_prepare_worker (worker, + "log_helper", + NULL); + +#ifdef HAVE_SOCK_SEQPACKET + r = socketpair (AF_LOCAL, SOCK_SEQPACKET, 0, ctx->pair); +#endif + if (r == -1 && socketpair (AF_LOCAL, SOCK_DGRAM, 0, ctx->pair) == -1) { + msg_err ("cannot create socketpair: %s, exiting now", strerror (errno)); + /* Prevent new processes spawning */ + exit (EXIT_SUCCESS); + } + + srv_cmd.type = RSPAMD_SRV_LOG_PIPE; + srv_cmd.cmd.log_pipe.type = RSPAMD_LOG_PIPE_SYMBOLS; + + rspamd_srv_send_command (worker, ctx->ev_base, &srv_cmd, ctx->pair[1], + rspamd_log_helper_reply_handler, ctx); + event_base_loop (ctx->ev_base, 0); + close (ctx->pair[0]); + rspamd_worker_block_signals (); + + rspamd_log_close (worker->srv->logger); + + exit (EXIT_SUCCESS); +} |