1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2012 Zbigniew Jędrzejewski-Szmek
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include <sys/prctl.h>
29 #include <sys/socket.h>
33 #include <gnutls/gnutls.h>
36 #include "sd-daemon.h"
38 #include "conf-parser.h"
40 #include "journal-file.h"
41 #include "journald-native.h"
43 #include "signal-util.h"
44 #include "socket-util.h"
46 #include "journal-remote-write.h"
47 #include "journal-remote.h"
49 #define REMOTE_JOURNAL_PATH "/var/log/journal/remote"
51 #define PRIV_KEY_FILE CERTIFICATE_ROOT "/private/journal-remote.pem"
52 #define CERT_FILE CERTIFICATE_ROOT "/certs/journal-remote.pem"
53 #define TRUST_FILE CERTIFICATE_ROOT "/ca/trusted.pem"
55 static char* arg_url
= NULL
;
56 static char* arg_getter
= NULL
;
57 static char* arg_listen_raw
= NULL
;
58 static char* arg_listen_http
= NULL
;
59 static char* arg_listen_https
= NULL
;
60 static char** arg_files
= NULL
;
61 static int arg_compress
= true;
62 static int arg_seal
= false;
63 static int http_socket
= -1, https_socket
= -1;
64 static char** arg_gnutls_log
= NULL
;
66 static JournalWriteSplitMode arg_split_mode
= JOURNAL_WRITE_SPLIT_HOST
;
67 static char* arg_output
= NULL
;
69 static char *arg_key
= NULL
;
70 static char *arg_cert
= NULL
;
71 static char *arg_trust
= NULL
;
72 static bool arg_trust_all
= false;
74 /**********************************************************************
75 **********************************************************************
76 **********************************************************************/
78 static int spawn_child(const char* child
, char** argv
) {
80 pid_t parent_pid
, child_pid
;
84 return log_error_errno(errno
, "Failed to create pager pipe: %m");
86 parent_pid
= getpid();
90 r
= log_error_errno(errno
, "Failed to fork: %m");
98 (void) reset_all_signal_handlers();
99 (void) reset_signal_mask();
101 r
= dup2(fd
[1], STDOUT_FILENO
);
103 log_error_errno(errno
, "Failed to dup pipe to stdout: %m");
109 /* Make sure the child goes away when the parent dies */
110 if (prctl(PR_SET_PDEATHSIG
, SIGTERM
) < 0)
113 /* Check whether our parent died before we were able
114 * to set the death signal */
115 if (getppid() != parent_pid
)
119 log_error_errno(errno
, "Failed to exec child %s: %m", child
);
125 log_warning_errno(errno
, "Failed to close write end of pipe: %m");
130 static int spawn_curl(const char* url
) {
131 char **argv
= STRV_MAKE("curl",
132 "-HAccept: application/vnd.fdo.journal",
138 r
= spawn_child("curl", argv
);
140 log_error_errno(errno
, "Failed to spawn curl: %m");
144 static int spawn_getter(const char *getter
, const char *url
) {
146 _cleanup_strv_free_
char **words
= NULL
;
149 r
= strv_split_extract(&words
, getter
, WHITESPACE
, EXTRACT_QUOTES
);
151 return log_error_errno(r
, "Failed to split getter option: %m");
153 r
= strv_extend(&words
, url
);
155 return log_error_errno(r
, "Failed to create command line: %m");
157 r
= spawn_child(words
[0], words
);
159 log_error_errno(errno
, "Failed to spawn getter %s: %m", getter
);
164 #define filename_escape(s) xescape((s), "/ ")
166 static int open_output(Writer
*w
, const char* host
) {
167 _cleanup_free_
char *_output
= NULL
;
171 switch (arg_split_mode
) {
172 case JOURNAL_WRITE_SPLIT_NONE
:
173 output
= arg_output
?: REMOTE_JOURNAL_PATH
"/remote.journal";
176 case JOURNAL_WRITE_SPLIT_HOST
: {
177 _cleanup_free_
char *name
;
181 name
= filename_escape(host
);
185 r
= asprintf(&_output
, "%s/remote-%s.journal",
186 arg_output
?: REMOTE_JOURNAL_PATH
,
196 assert_not_reached("what?");
199 r
= journal_file_open_reliably(output
,
200 O_RDWR
|O_CREAT
, 0640,
201 arg_compress
, arg_seal
,
206 log_error_errno(r
, "Failed to open output journal %s: %m",
209 log_debug("Opened output file %s", w
->journal
->path
);
213 /**********************************************************************
214 **********************************************************************
215 **********************************************************************/
217 static int init_writer_hashmap(RemoteServer
*s
) {
218 static const struct hash_ops
*hash_ops
[] = {
219 [JOURNAL_WRITE_SPLIT_NONE
] = NULL
,
220 [JOURNAL_WRITE_SPLIT_HOST
] = &string_hash_ops
,
223 assert(arg_split_mode
>= 0 && arg_split_mode
< (int) ELEMENTSOF(hash_ops
));
225 s
->writers
= hashmap_new(hash_ops
[arg_split_mode
]);
232 static int get_writer(RemoteServer
*s
, const char *host
,
235 _cleanup_writer_unref_ Writer
*w
= NULL
;
238 switch(arg_split_mode
) {
239 case JOURNAL_WRITE_SPLIT_NONE
:
240 key
= "one and only";
243 case JOURNAL_WRITE_SPLIT_HOST
:
249 assert_not_reached("what split mode?");
252 w
= hashmap_get(s
->writers
, key
);
260 if (arg_split_mode
== JOURNAL_WRITE_SPLIT_HOST
) {
261 w
->hashmap_key
= strdup(key
);
266 r
= open_output(w
, host
);
270 r
= hashmap_put(s
->writers
, w
->hashmap_key
?: key
, w
);
280 /**********************************************************************
281 **********************************************************************
282 **********************************************************************/
284 /* This should go away as soon as µhttpd allows state to be passed around. */
285 static RemoteServer
*server
;
287 static int dispatch_raw_source_event(sd_event_source
*event
,
291 static int dispatch_raw_source_until_block(sd_event_source
*event
,
293 static int dispatch_blocking_source_event(sd_event_source
*event
,
295 static int dispatch_raw_connection_event(sd_event_source
*event
,
299 static int dispatch_http_event(sd_event_source
*event
,
304 static int get_source_for_fd(RemoteServer
*s
,
305 int fd
, char *name
, RemoteSource
**source
) {
309 /* This takes ownership of name, but only on success. */
314 if (!GREEDY_REALLOC0(s
->sources
, s
->sources_size
, fd
+ 1))
317 r
= get_writer(s
, name
, &writer
);
319 return log_warning_errno(r
, "Failed to get writer for source %s: %m",
322 if (s
->sources
[fd
] == NULL
) {
323 s
->sources
[fd
] = source_new(fd
, false, name
, writer
);
324 if (!s
->sources
[fd
]) {
325 writer_unref(writer
);
332 *source
= s
->sources
[fd
];
336 static int remove_source(RemoteServer
*s
, int fd
) {
337 RemoteSource
*source
;
340 assert(fd
>= 0 && fd
< (ssize_t
) s
->sources_size
);
342 source
= s
->sources
[fd
];
344 /* this closes fd too */
346 s
->sources
[fd
] = NULL
;
353 static int add_source(RemoteServer
*s
, int fd
, char* name
, bool own_name
) {
355 RemoteSource
*source
= NULL
;
358 /* This takes ownership of name, even on failure, if own_name is true. */
370 r
= get_source_for_fd(s
, fd
, name
, &source
);
372 log_error_errno(r
, "Failed to create source for fd:%d (%s): %m",
378 r
= sd_event_add_io(s
->events
, &source
->event
,
379 fd
, EPOLLIN
|EPOLLRDHUP
|EPOLLPRI
,
380 dispatch_raw_source_event
, source
);
382 /* Add additional source for buffer processing. It will be
384 r
= sd_event_add_defer(s
->events
, &source
->buffer_event
,
385 dispatch_raw_source_until_block
, source
);
387 sd_event_source_set_enabled(source
->buffer_event
, SD_EVENT_OFF
);
388 } else if (r
== -EPERM
) {
389 log_debug("Falling back to sd_event_add_defer for fd:%d (%s)", fd
, name
);
390 r
= sd_event_add_defer(s
->events
, &source
->event
,
391 dispatch_blocking_source_event
, source
);
393 sd_event_source_set_enabled(source
->event
, SD_EVENT_ON
);
396 log_error_errno(r
, "Failed to register event source for fd:%d: %m",
401 r
= sd_event_source_set_description(source
->event
, name
);
403 log_error_errno(r
, "Failed to set source name for fd:%d: %m", fd
);
407 return 1; /* work to do */
410 remove_source(s
, fd
);
414 static int add_raw_socket(RemoteServer
*s
, int fd
) {
416 _cleanup_close_
int fd_
= fd
;
417 char name
[sizeof("raw-socket-")-1 + DECIMAL_STR_MAX(int) + 1];
421 r
= sd_event_add_io(s
->events
, &s
->listen_event
,
423 dispatch_raw_connection_event
, s
);
427 xsprintf(name
, "raw-socket-%d", fd
);
429 r
= sd_event_source_set_description(s
->listen_event
, name
);
438 static int setup_raw_socket(RemoteServer
*s
, const char *address
) {
441 fd
= make_socket_fd(LOG_INFO
, address
, SOCK_STREAM
| SOCK_CLOEXEC
);
445 return add_raw_socket(s
, fd
);
448 /**********************************************************************
449 **********************************************************************
450 **********************************************************************/
452 static int request_meta(void **connection_cls
, int fd
, char *hostname
) {
453 RemoteSource
*source
;
457 assert(connection_cls
);
461 r
= get_writer(server
, hostname
, &writer
);
463 return log_warning_errno(r
, "Failed to get writer for source %s: %m",
466 source
= source_new(fd
, true, hostname
, writer
);
468 writer_unref(writer
);
472 log_debug("Added RemoteSource as connection metadata %p", source
);
474 *connection_cls
= source
;
478 static void request_meta_free(void *cls
,
479 struct MHD_Connection
*connection
,
480 void **connection_cls
,
481 enum MHD_RequestTerminationCode toe
) {
484 assert(connection_cls
);
488 log_debug("Cleaning up connection metadata %p", s
);
490 *connection_cls
= NULL
;
494 static int process_http_upload(
495 struct MHD_Connection
*connection
,
496 const char *upload_data
,
497 size_t *upload_data_size
,
498 RemoteSource
*source
) {
500 bool finished
= false;
506 log_trace("%s: connection %p, %zu bytes",
507 __func__
, connection
, *upload_data_size
);
509 if (*upload_data_size
) {
510 log_trace("Received %zu bytes", *upload_data_size
);
512 r
= push_data(source
, upload_data
, *upload_data_size
);
514 return mhd_respond_oom(connection
);
516 *upload_data_size
= 0;
521 r
= process_source(source
, arg_compress
, arg_seal
);
525 log_warning("Failed to process data for connection %p", connection
);
527 return mhd_respondf(connection
,
528 MHD_HTTP_REQUEST_ENTITY_TOO_LARGE
,
529 "Entry is too large, maximum is %u bytes.\n",
532 return mhd_respondf(connection
,
533 MHD_HTTP_UNPROCESSABLE_ENTITY
,
534 "Processing failed: %s.", strerror(-r
));
541 /* The upload is finished */
543 remaining
= source_non_empty(source
);
545 log_warning("Premature EOFbyte. %zu bytes lost.", remaining
);
546 return mhd_respondf(connection
, MHD_HTTP_EXPECTATION_FAILED
,
547 "Premature EOF. %zu bytes of trailing data not processed.",
551 return mhd_respond(connection
, MHD_HTTP_ACCEPTED
, "OK.\n");
554 static int request_handler(
556 struct MHD_Connection
*connection
,
560 const char *upload_data
,
561 size_t *upload_data_size
,
562 void **connection_cls
) {
566 _cleanup_free_
char *hostname
= NULL
;
569 assert(connection_cls
);
573 log_trace("Handling a connection %s %s %s", method
, url
, version
);
576 return process_http_upload(connection
,
577 upload_data
, upload_data_size
,
580 if (!streq(method
, "POST"))
581 return mhd_respond(connection
, MHD_HTTP_METHOD_NOT_ACCEPTABLE
,
582 "Unsupported method.\n");
584 if (!streq(url
, "/upload"))
585 return mhd_respond(connection
, MHD_HTTP_NOT_FOUND
,
588 header
= MHD_lookup_connection_value(connection
,
589 MHD_HEADER_KIND
, "Content-Type");
590 if (!header
|| !streq(header
, "application/vnd.fdo.journal"))
591 return mhd_respond(connection
, MHD_HTTP_UNSUPPORTED_MEDIA_TYPE
,
592 "Content-Type: application/vnd.fdo.journal"
596 const union MHD_ConnectionInfo
*ci
;
598 ci
= MHD_get_connection_info(connection
,
599 MHD_CONNECTION_INFO_CONNECTION_FD
);
601 log_error("MHD_get_connection_info failed: cannot get remote fd");
602 return mhd_respond(connection
, MHD_HTTP_INTERNAL_SERVER_ERROR
,
603 "Cannot check remote address");
610 if (server
->check_trust
) {
611 r
= check_permissions(connection
, &code
, &hostname
);
615 r
= getnameinfo_pretty(fd
, &hostname
);
617 return mhd_respond(connection
, MHD_HTTP_INTERNAL_SERVER_ERROR
,
618 "Cannot check remote hostname");
623 r
= request_meta(connection_cls
, fd
, hostname
);
625 return respond_oom(connection
);
627 return mhd_respond(connection
, MHD_HTTP_INTERNAL_SERVER_ERROR
,
634 static int setup_microhttpd_server(RemoteServer
*s
,
639 struct MHD_OptionItem opts
[] = {
640 { MHD_OPTION_NOTIFY_COMPLETED
, (intptr_t) request_meta_free
},
641 { MHD_OPTION_EXTERNAL_LOGGER
, (intptr_t) microhttpd_logger
},
642 { MHD_OPTION_LISTEN_SOCKET
, fd
},
651 MHD_USE_EPOLL_LINUX_ONLY
|
652 MHD_USE_PEDANTIC_CHECKS
|
653 MHD_USE_PIPE_FOR_SHUTDOWN
;
655 const union MHD_DaemonInfo
*info
;
661 r
= fd_nonblock(fd
, true);
663 return log_error_errno(r
, "Failed to make fd:%d nonblocking: %m", fd
);
668 opts
[opts_pos
++] = (struct MHD_OptionItem
)
669 {MHD_OPTION_HTTPS_MEM_KEY
, 0, (char*) key
};
670 opts
[opts_pos
++] = (struct MHD_OptionItem
)
671 {MHD_OPTION_HTTPS_MEM_CERT
, 0, (char*) cert
};
673 flags
|= MHD_USE_SSL
;
676 opts
[opts_pos
++] = (struct MHD_OptionItem
)
677 {MHD_OPTION_HTTPS_MEM_TRUST
, 0, (char*) trust
};
680 d
= new(MHDDaemonWrapper
, 1);
684 d
->fd
= (uint64_t) fd
;
686 d
->daemon
= MHD_start_daemon(flags
, 0,
688 request_handler
, NULL
,
689 MHD_OPTION_ARRAY
, opts
,
692 log_error("Failed to start µhttp daemon");
697 log_debug("Started MHD %s daemon on fd:%d (wrapper @ %p)",
698 key
? "HTTPS" : "HTTP", fd
, d
);
701 info
= MHD_get_daemon_info(d
->daemon
, MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY
);
703 log_error("µhttp returned NULL daemon info");
708 epoll_fd
= info
->listen_fd
;
710 log_error("µhttp epoll fd is invalid");
715 r
= sd_event_add_io(s
->events
, &d
->event
,
717 dispatch_http_event
, d
);
719 log_error_errno(r
, "Failed to add event callback: %m");
723 r
= sd_event_source_set_description(d
->event
, "epoll-fd");
725 log_error_errno(r
, "Failed to set source name: %m");
729 r
= hashmap_ensure_allocated(&s
->daemons
, &uint64_hash_ops
);
735 r
= hashmap_put(s
->daemons
, &d
->fd
, d
);
737 log_error_errno(r
, "Failed to add daemon to hashmap: %m");
745 MHD_stop_daemon(d
->daemon
);
751 static int setup_microhttpd_socket(RemoteServer
*s
,
758 fd
= make_socket_fd(LOG_DEBUG
, address
, SOCK_STREAM
| SOCK_CLOEXEC
);
762 return setup_microhttpd_server(s
, fd
, key
, cert
, trust
);
765 static int dispatch_http_event(sd_event_source
*event
,
769 MHDDaemonWrapper
*d
= userdata
;
774 r
= MHD_run(d
->daemon
);
776 log_error("MHD_run failed!");
777 // XXX: unregister daemon
781 return 1; /* work to do */
784 /**********************************************************************
785 **********************************************************************
786 **********************************************************************/
788 static int setup_signals(RemoteServer
*s
) {
793 assert_se(sigprocmask_many(SIG_SETMASK
, NULL
, SIGINT
, SIGTERM
, -1) >= 0);
795 r
= sd_event_add_signal(s
->events
, &s
->sigterm_event
, SIGTERM
, NULL
, s
);
799 r
= sd_event_add_signal(s
->events
, &s
->sigint_event
, SIGINT
, NULL
, s
);
806 static int negative_fd(const char *spec
) {
807 /* Return a non-positive number as its inverse, -EINVAL otherwise. */
811 r
= safe_atoi(spec
, &fd
);
821 static int remoteserver_init(RemoteServer
*s
,
830 if ((arg_listen_raw
|| arg_listen_http
) && trust
) {
831 log_error("Option --trust makes all non-HTTPS connections untrusted.");
835 r
= sd_event_default(&s
->events
);
837 return log_error_errno(r
, "Failed to allocate event loop: %m");
841 assert(server
== NULL
);
844 r
= init_writer_hashmap(s
);
848 n
= sd_listen_fds(true);
850 return log_error_errno(n
, "Failed to read listening file descriptors from environment: %m");
852 log_debug("Received %d descriptors", n
);
854 if (MAX(http_socket
, https_socket
) >= SD_LISTEN_FDS_START
+ n
) {
855 log_error("Received fewer sockets than expected");
859 for (fd
= SD_LISTEN_FDS_START
; fd
< SD_LISTEN_FDS_START
+ n
; fd
++) {
860 if (sd_is_socket(fd
, AF_UNSPEC
, 0, true)) {
861 log_debug("Received a listening socket (fd:%d)", fd
);
863 if (fd
== http_socket
)
864 r
= setup_microhttpd_server(s
, fd
, NULL
, NULL
, NULL
);
865 else if (fd
== https_socket
)
866 r
= setup_microhttpd_server(s
, fd
, key
, cert
, trust
);
868 r
= add_raw_socket(s
, fd
);
869 } else if (sd_is_socket(fd
, AF_UNSPEC
, 0, false)) {
872 r
= getnameinfo_pretty(fd
, &hostname
);
874 return log_error_errno(r
, "Failed to retrieve remote name: %m");
876 log_debug("Received a connection socket (fd:%d) from %s", fd
, hostname
);
878 r
= add_source(s
, fd
, hostname
, true);
880 log_error("Unknown socket passed on fd:%d", fd
);
886 return log_error_errno(r
, "Failed to register socket (fd:%d): %m",
891 const char *url
, *hostname
;
893 url
= strjoina(arg_url
, "/entries");
896 log_info("Spawning getter %s...", url
);
897 fd
= spawn_getter(arg_getter
, url
);
899 log_info("Spawning curl %s...", url
);
900 fd
= spawn_curl(url
);
906 startswith(arg_url
, "https://") ?:
907 startswith(arg_url
, "http://") ?:
910 r
= add_source(s
, fd
, (char*) hostname
, false);
915 if (arg_listen_raw
) {
916 log_debug("Listening on a socket...");
917 r
= setup_raw_socket(s
, arg_listen_raw
);
922 if (arg_listen_http
) {
923 r
= setup_microhttpd_socket(s
, arg_listen_http
, NULL
, NULL
, NULL
);
928 if (arg_listen_https
) {
929 r
= setup_microhttpd_socket(s
, arg_listen_https
, key
, cert
, trust
);
934 STRV_FOREACH(file
, arg_files
) {
935 const char *output_name
;
937 if (streq(*file
, "-")) {
938 log_debug("Using standard input as source.");
941 output_name
= "stdin";
943 log_debug("Reading file %s...", *file
);
945 fd
= open(*file
, O_RDONLY
|O_CLOEXEC
|O_NOCTTY
|O_NONBLOCK
);
947 return log_error_errno(errno
, "Failed to open %s: %m", *file
);
951 r
= add_source(s
, fd
, (char*) output_name
, false);
956 if (s
->active
== 0) {
957 log_error("Zarro sources specified");
961 if (arg_split_mode
== JOURNAL_WRITE_SPLIT_NONE
) {
962 /* In this case we know what the writer will be
963 called, so we can create it and verify that we can
964 create output as expected. */
965 r
= get_writer(s
, NULL
, &s
->_single_writer
);
973 static void server_destroy(RemoteServer
*s
) {
977 while ((d
= hashmap_steal_first(s
->daemons
))) {
978 MHD_stop_daemon(d
->daemon
);
979 sd_event_source_unref(d
->event
);
983 hashmap_free(s
->daemons
);
985 assert(s
->sources_size
== 0 || s
->sources
);
986 for (i
= 0; i
< s
->sources_size
; i
++)
990 writer_unref(s
->_single_writer
);
991 hashmap_free(s
->writers
);
993 sd_event_source_unref(s
->sigterm_event
);
994 sd_event_source_unref(s
->sigint_event
);
995 sd_event_source_unref(s
->listen_event
);
996 sd_event_unref(s
->events
);
998 /* fds that we're listening on remain open... */
1001 /**********************************************************************
1002 **********************************************************************
1003 **********************************************************************/
1005 static int handle_raw_source(sd_event_source
*event
,
1010 RemoteSource
*source
;
1013 /* Returns 1 if there might be more data pending,
1014 * 0 if data is currently exhausted, negative on error.
1017 assert(fd
>= 0 && fd
< (ssize_t
) s
->sources_size
);
1018 source
= s
->sources
[fd
];
1019 assert(source
->fd
== fd
);
1021 r
= process_source(source
, arg_compress
, arg_seal
);
1022 if (source
->state
== STATE_EOF
) {
1025 log_debug("EOF reached with source fd:%d (%s)",
1026 source
->fd
, source
->name
);
1028 remaining
= source_non_empty(source
);
1030 log_notice("Premature EOF. %zu bytes lost.", remaining
);
1031 remove_source(s
, source
->fd
);
1032 log_debug("%zu active sources remaining", s
->active
);
1034 } else if (r
== -E2BIG
) {
1035 log_notice_errno(E2BIG
, "Entry too big, skipped");
1037 } else if (r
== -EAGAIN
) {
1040 log_debug_errno(r
, "Closing connection: %m");
1041 remove_source(server
, fd
);
1047 static int dispatch_raw_source_until_block(sd_event_source
*event
,
1049 RemoteSource
*source
= userdata
;
1052 /* Make sure event stays around even if source is destroyed */
1053 sd_event_source_ref(event
);
1055 r
= handle_raw_source(event
, source
->fd
, EPOLLIN
, server
);
1057 /* No more data for now */
1058 sd_event_source_set_enabled(event
, SD_EVENT_OFF
);
1060 sd_event_source_unref(event
);
1065 static int dispatch_raw_source_event(sd_event_source
*event
,
1069 RemoteSource
*source
= userdata
;
1072 assert(source
->event
);
1073 assert(source
->buffer_event
);
1075 r
= handle_raw_source(event
, fd
, EPOLLIN
, server
);
1077 /* Might have more data. We need to rerun the handler
1078 * until we are sure the buffer is exhausted. */
1079 sd_event_source_set_enabled(source
->buffer_event
, SD_EVENT_ON
);
1084 static int dispatch_blocking_source_event(sd_event_source
*event
,
1086 RemoteSource
*source
= userdata
;
1088 return handle_raw_source(event
, source
->fd
, EPOLLIN
, server
);
1091 static int accept_connection(const char* type
, int fd
,
1092 SocketAddress
*addr
, char **hostname
) {
1095 log_debug("Accepting new %s connection on fd:%d", type
, fd
);
1096 fd2
= accept4(fd
, &addr
->sockaddr
.sa
, &addr
->size
, SOCK_NONBLOCK
|SOCK_CLOEXEC
);
1098 return log_error_errno(errno
, "accept() on fd:%d failed: %m", fd
);
1100 switch(socket_address_family(addr
)) {
1103 _cleanup_free_
char *a
= NULL
;
1106 r
= socket_address_print(addr
, &a
);
1108 log_error_errno(r
, "socket_address_print(): %m");
1113 r
= socknameinfo_pretty(&addr
->sockaddr
, addr
->size
, &b
);
1115 log_error_errno(r
, "Resolving hostname failed: %m");
1120 log_debug("Accepted %s %s connection from %s",
1122 socket_address_family(addr
) == AF_INET
? "IP" : "IPv6",
1130 log_error("Rejected %s connection with unsupported family %d",
1131 type
, socket_address_family(addr
));
1138 static int dispatch_raw_connection_event(sd_event_source
*event
,
1142 RemoteServer
*s
= userdata
;
1144 SocketAddress addr
= {
1145 .size
= sizeof(union sockaddr_union
),
1146 .type
= SOCK_STREAM
,
1148 char *hostname
= NULL
;
1150 fd2
= accept_connection("raw", fd
, &addr
, &hostname
);
1154 return add_source(s
, fd2
, hostname
, true);
1157 /**********************************************************************
1158 **********************************************************************
1159 **********************************************************************/
1161 static const char* const journal_write_split_mode_table
[_JOURNAL_WRITE_SPLIT_MAX
] = {
1162 [JOURNAL_WRITE_SPLIT_NONE
] = "none",
1163 [JOURNAL_WRITE_SPLIT_HOST
] = "host",
1166 DEFINE_PRIVATE_STRING_TABLE_LOOKUP(journal_write_split_mode
, JournalWriteSplitMode
);
1167 static DEFINE_CONFIG_PARSE_ENUM(config_parse_write_split_mode
,
1168 journal_write_split_mode
,
1169 JournalWriteSplitMode
,
1170 "Failed to parse split mode setting");
1172 static int parse_config(void) {
1173 const ConfigTableItem items
[] = {
1174 { "Remote", "SplitMode", config_parse_write_split_mode
, 0, &arg_split_mode
},
1175 { "Remote", "ServerKeyFile", config_parse_path
, 0, &arg_key
},
1176 { "Remote", "ServerCertificateFile", config_parse_path
, 0, &arg_cert
},
1177 { "Remote", "TrustedCertificateFile", config_parse_path
, 0, &arg_trust
},
1180 return config_parse_many(PKGSYSCONFDIR
"/journal-remote.conf",
1181 CONF_DIRS_NULSTR("systemd/journal-remote.conf"),
1182 "Remote\0", config_item_table_lookup
, items
,
1186 static void help(void) {
1187 printf("%s [OPTIONS...] {FILE|-}...\n\n"
1188 "Write external journal events to journal file(s).\n\n"
1189 " -h --help Show this help\n"
1190 " --version Show package version\n"
1191 " --url=URL Read events from systemd-journal-gatewayd at URL\n"
1192 " --getter=COMMAND Read events from the output of COMMAND\n"
1193 " --listen-raw=ADDR Listen for connections at ADDR\n"
1194 " --listen-http=ADDR Listen for HTTP connections at ADDR\n"
1195 " --listen-https=ADDR Listen for HTTPS connections at ADDR\n"
1196 " -o --output=FILE|DIR Write output to FILE or DIR/external-*.journal\n"
1197 " --compress[=BOOL] XZ-compress the output journal (default: yes)\n"
1198 " --seal[=BOOL] Use event sealing (default: no)\n"
1199 " --key=FILENAME SSL key in PEM format (default:\n"
1200 " \"" PRIV_KEY_FILE
"\")\n"
1201 " --cert=FILENAME SSL certificate in PEM format (default:\n"
1202 " \"" CERT_FILE
"\")\n"
1203 " --trust=FILENAME|all SSL CA certificate or disable checking (default:\n"
1204 " \"" TRUST_FILE
"\")\n"
1205 " --gnutls-log=CATEGORY...\n"
1206 " Specify a list of gnutls logging categories\n"
1207 " --split-mode=none|host How many output files to create\n"
1209 "Note: file descriptors from sd_listen_fds() will be consumed, too.\n"
1210 , program_invocation_short_name
);
1213 static int parse_argv(int argc
, char *argv
[]) {
1215 ARG_VERSION
= 0x100,
1230 static const struct option options
[] = {
1231 { "help", no_argument
, NULL
, 'h' },
1232 { "version", no_argument
, NULL
, ARG_VERSION
},
1233 { "url", required_argument
, NULL
, ARG_URL
},
1234 { "getter", required_argument
, NULL
, ARG_GETTER
},
1235 { "listen-raw", required_argument
, NULL
, ARG_LISTEN_RAW
},
1236 { "listen-http", required_argument
, NULL
, ARG_LISTEN_HTTP
},
1237 { "listen-https", required_argument
, NULL
, ARG_LISTEN_HTTPS
},
1238 { "output", required_argument
, NULL
, 'o' },
1239 { "split-mode", required_argument
, NULL
, ARG_SPLIT_MODE
},
1240 { "compress", optional_argument
, NULL
, ARG_COMPRESS
},
1241 { "seal", optional_argument
, NULL
, ARG_SEAL
},
1242 { "key", required_argument
, NULL
, ARG_KEY
},
1243 { "cert", required_argument
, NULL
, ARG_CERT
},
1244 { "trust", required_argument
, NULL
, ARG_TRUST
},
1245 { "gnutls-log", required_argument
, NULL
, ARG_GNUTLS_LOG
},
1250 bool type_a
, type_b
;
1255 while ((c
= getopt_long(argc
, argv
, "ho:", options
, NULL
)) >= 0)
1259 return 0 /* done */;
1266 log_error("cannot currently set more than one --url");
1275 log_error("cannot currently use --getter more than once");
1279 arg_getter
= optarg
;
1282 case ARG_LISTEN_RAW
:
1283 if (arg_listen_raw
) {
1284 log_error("cannot currently use --listen-raw more than once");
1288 arg_listen_raw
= optarg
;
1291 case ARG_LISTEN_HTTP
:
1292 if (arg_listen_http
|| http_socket
>= 0) {
1293 log_error("cannot currently use --listen-http more than once");
1297 r
= negative_fd(optarg
);
1301 arg_listen_http
= optarg
;
1304 case ARG_LISTEN_HTTPS
:
1305 if (arg_listen_https
|| https_socket
>= 0) {
1306 log_error("cannot currently use --listen-https more than once");
1310 r
= negative_fd(optarg
);
1314 arg_listen_https
= optarg
;
1320 log_error("Key file specified twice");
1324 arg_key
= strdup(optarg
);
1332 log_error("Certificate file specified twice");
1336 arg_cert
= strdup(optarg
);
1343 if (arg_trust
|| arg_trust_all
) {
1344 log_error("Confusing trusted CA configuration");
1348 if (streq(optarg
, "all"))
1349 arg_trust_all
= true;
1352 arg_trust
= strdup(optarg
);
1356 log_error("Option --trust is not available.");
1365 log_error("cannot use --output/-o more than once");
1369 arg_output
= optarg
;
1372 case ARG_SPLIT_MODE
:
1373 arg_split_mode
= journal_write_split_mode_from_string(optarg
);
1374 if (arg_split_mode
== _JOURNAL_WRITE_SPLIT_INVALID
) {
1375 log_error("Invalid split mode: %s", optarg
);
1382 r
= parse_boolean(optarg
);
1384 log_error("Failed to parse --compress= parameter.");
1390 arg_compress
= true;
1396 r
= parse_boolean(optarg
);
1398 log_error("Failed to parse --seal= parameter.");
1408 case ARG_GNUTLS_LOG
: {
1410 const char *word
, *state
;
1413 FOREACH_WORD_SEPARATOR(word
, size
, optarg
, ",", state
) {
1416 cat
= strndup(word
, size
);
1420 if (strv_consume(&arg_gnutls_log
, cat
) < 0)
1425 log_error("Option --gnutls-log is not available.");
1434 assert_not_reached("Unknown option code.");
1438 arg_files
= argv
+ optind
;
1440 type_a
= arg_getter
|| !strv_isempty(arg_files
);
1443 || arg_listen_http
|| arg_listen_https
1444 || sd_listen_fds(false) > 0;
1445 if (type_a
&& type_b
) {
1446 log_error("Cannot use file input or --getter with "
1447 "--arg-listen-... or socket activation.");
1452 log_error("Option --output must be specified with file input or --getter.");
1456 arg_split_mode
= JOURNAL_WRITE_SPLIT_NONE
;
1459 if (arg_split_mode
== JOURNAL_WRITE_SPLIT_NONE
1460 && arg_output
&& is_dir(arg_output
, true) > 0) {
1461 log_error("For SplitMode=none, output must be a file.");
1465 if (arg_split_mode
== JOURNAL_WRITE_SPLIT_HOST
1466 && arg_output
&& is_dir(arg_output
, true) <= 0) {
1467 log_error("For SplitMode=host, output must be a directory.");
1471 log_debug("Full config: SplitMode=%s Key=%s Cert=%s Trust=%s",
1472 journal_write_split_mode_to_string(arg_split_mode
),
1477 return 1 /* work to do */;
1480 static int load_certificates(char **key
, char **cert
, char **trust
) {
1483 r
= read_full_file(arg_key
?: PRIV_KEY_FILE
, key
, NULL
);
1485 return log_error_errno(r
, "Failed to read key from file '%s': %m",
1486 arg_key
?: PRIV_KEY_FILE
);
1488 r
= read_full_file(arg_cert
?: CERT_FILE
, cert
, NULL
);
1490 return log_error_errno(r
, "Failed to read certificate from file '%s': %m",
1491 arg_cert
?: CERT_FILE
);
1494 log_info("Certificate checking disabled.");
1496 r
= read_full_file(arg_trust
?: TRUST_FILE
, trust
, NULL
);
1498 return log_error_errno(r
, "Failed to read CA certificate file '%s': %m",
1499 arg_trust
?: TRUST_FILE
);
1505 int main(int argc
, char **argv
) {
1506 RemoteServer s
= {};
1508 _cleanup_free_
char *key
= NULL
, *cert
= NULL
, *trust
= NULL
;
1510 log_show_color(true);
1511 log_parse_environment();
1515 return EXIT_FAILURE
;
1517 r
= parse_argv(argc
, argv
);
1519 return r
== 0 ? EXIT_SUCCESS
: EXIT_FAILURE
;
1522 if (arg_listen_http
|| arg_listen_https
) {
1523 r
= setup_gnutls_logger(arg_gnutls_log
);
1525 return EXIT_FAILURE
;
1528 if (arg_listen_https
|| https_socket
>= 0)
1529 if (load_certificates(&key
, &cert
, &trust
) < 0)
1530 return EXIT_FAILURE
;
1532 if (remoteserver_init(&s
, key
, cert
, trust
) < 0)
1533 return EXIT_FAILURE
;
1535 r
= sd_event_set_watchdog(s
.events
, true);
1537 log_error_errno(r
, "Failed to enable watchdog: %m");
1539 log_debug("Watchdog is %s.", r
> 0 ? "enabled" : "disabled");
1541 log_debug("%s running as pid "PID_FMT
,
1542 program_invocation_short_name
, getpid());
1545 "STATUS=Processing requests...");
1548 r
= sd_event_get_state(s
.events
);
1551 if (r
== SD_EVENT_FINISHED
)
1554 r
= sd_event_run(s
.events
, -1);
1556 log_error_errno(r
, "Failed to run event loop: %m");
1563 "STATUS=Shutting down after writing %" PRIu64
" entries...", s
.event_count
);
1564 log_info("Finishing after writing %" PRIu64
" entries", s
.event_count
);
1572 return r
>= 0 ? EXIT_SUCCESS
: EXIT_FAILURE
;