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/>.
27 #include <sys/prctl.h>
28 #include <sys/socket.h>
32 #include "sd-daemon.h"
33 #include "signal-util.h"
34 #include "journal-file.h"
35 #include "journald-native.h"
36 #include "socket-util.h"
41 #include "conf-parser.h"
44 #include <gnutls/gnutls.h>
47 #include "journal-remote.h"
48 #include "journal-remote-write.h"
50 #define REMOTE_JOURNAL_PATH "/var/log/journal/remote"
52 #define PRIV_KEY_FILE CERTIFICATE_ROOT "/private/journal-remote.pem"
53 #define CERT_FILE CERTIFICATE_ROOT "/certs/journal-remote.pem"
54 #define TRUST_FILE CERTIFICATE_ROOT "/ca/trusted.pem"
56 static char* arg_url
= NULL
;
57 static char* arg_getter
= NULL
;
58 static char* arg_listen_raw
= NULL
;
59 static char* arg_listen_http
= NULL
;
60 static char* arg_listen_https
= NULL
;
61 static char** arg_files
= NULL
;
62 static int arg_compress
= true;
63 static int arg_seal
= false;
64 static int http_socket
= -1, https_socket
= -1;
65 static char** arg_gnutls_log
= NULL
;
67 static JournalWriteSplitMode arg_split_mode
= JOURNAL_WRITE_SPLIT_HOST
;
68 static char* arg_output
= NULL
;
70 static char *arg_key
= NULL
;
71 static char *arg_cert
= NULL
;
72 static char *arg_trust
= NULL
;
73 static bool arg_trust_all
= false;
75 /**********************************************************************
76 **********************************************************************
77 **********************************************************************/
79 static int spawn_child(const char* child
, char** argv
) {
81 pid_t parent_pid
, child_pid
;
85 return log_error_errno(errno
, "Failed to create pager pipe: %m");
87 parent_pid
= getpid();
91 r
= log_error_errno(errno
, "Failed to fork: %m");
99 (void) reset_all_signal_handlers();
100 (void) reset_signal_mask();
102 r
= dup2(fd
[1], STDOUT_FILENO
);
104 log_error_errno(errno
, "Failed to dup pipe to stdout: %m");
110 /* Make sure the child goes away when the parent dies */
111 if (prctl(PR_SET_PDEATHSIG
, SIGTERM
) < 0)
114 /* Check whether our parent died before we were able
115 * to set the death signal */
116 if (getppid() != parent_pid
)
120 log_error_errno(errno
, "Failed to exec child %s: %m", child
);
126 log_warning_errno(errno
, "Failed to close write end of pipe: %m");
131 static int spawn_curl(const char* url
) {
132 char **argv
= STRV_MAKE("curl",
133 "-HAccept: application/vnd.fdo.journal",
139 r
= spawn_child("curl", argv
);
141 log_error_errno(errno
, "Failed to spawn curl: %m");
145 static int spawn_getter(const char *getter
, const char *url
) {
147 _cleanup_strv_free_
char **words
= NULL
;
150 r
= strv_split_extract(&words
, getter
, WHITESPACE
, EXTRACT_QUOTES
);
152 return log_error_errno(r
, "Failed to split getter option: %m");
154 r
= strv_extend(&words
, url
);
156 return log_error_errno(r
, "Failed to create command line: %m");
158 r
= spawn_child(words
[0], words
);
160 log_error_errno(errno
, "Failed to spawn getter %s: %m", getter
);
165 #define filename_escape(s) xescape((s), "/ ")
167 static int open_output(Writer
*w
, const char* host
) {
168 _cleanup_free_
char *_output
= NULL
;
172 switch (arg_split_mode
) {
173 case JOURNAL_WRITE_SPLIT_NONE
:
174 output
= arg_output
?: REMOTE_JOURNAL_PATH
"/remote.journal";
177 case JOURNAL_WRITE_SPLIT_HOST
: {
178 _cleanup_free_
char *name
;
182 name
= filename_escape(host
);
186 r
= asprintf(&_output
, "%s/remote-%s.journal",
187 arg_output
?: REMOTE_JOURNAL_PATH
,
197 assert_not_reached("what?");
200 r
= journal_file_open_reliably(output
,
201 O_RDWR
|O_CREAT
, 0640,
202 arg_compress
, arg_seal
,
207 log_error_errno(r
, "Failed to open output journal %s: %m",
210 log_debug("Opened output file %s", w
->journal
->path
);
214 /**********************************************************************
215 **********************************************************************
216 **********************************************************************/
218 static int init_writer_hashmap(RemoteServer
*s
) {
219 static const struct hash_ops
*hash_ops
[] = {
220 [JOURNAL_WRITE_SPLIT_NONE
] = NULL
,
221 [JOURNAL_WRITE_SPLIT_HOST
] = &string_hash_ops
,
224 assert(arg_split_mode
>= 0 && arg_split_mode
< (int) ELEMENTSOF(hash_ops
));
226 s
->writers
= hashmap_new(hash_ops
[arg_split_mode
]);
233 static int get_writer(RemoteServer
*s
, const char *host
,
236 _cleanup_writer_unref_ Writer
*w
= NULL
;
239 switch(arg_split_mode
) {
240 case JOURNAL_WRITE_SPLIT_NONE
:
241 key
= "one and only";
244 case JOURNAL_WRITE_SPLIT_HOST
:
250 assert_not_reached("what split mode?");
253 w
= hashmap_get(s
->writers
, key
);
261 if (arg_split_mode
== JOURNAL_WRITE_SPLIT_HOST
) {
262 w
->hashmap_key
= strdup(key
);
267 r
= open_output(w
, host
);
271 r
= hashmap_put(s
->writers
, w
->hashmap_key
?: key
, w
);
281 /**********************************************************************
282 **********************************************************************
283 **********************************************************************/
285 /* This should go away as soon as µhttpd allows state to be passed around. */
286 static RemoteServer
*server
;
288 static int dispatch_raw_source_event(sd_event_source
*event
,
292 static int dispatch_raw_source_until_block(sd_event_source
*event
,
294 static int dispatch_blocking_source_event(sd_event_source
*event
,
296 static int dispatch_raw_connection_event(sd_event_source
*event
,
300 static int dispatch_http_event(sd_event_source
*event
,
305 static int get_source_for_fd(RemoteServer
*s
,
306 int fd
, char *name
, RemoteSource
**source
) {
310 /* This takes ownership of name, but only on success. */
315 if (!GREEDY_REALLOC0(s
->sources
, s
->sources_size
, fd
+ 1))
318 r
= get_writer(s
, name
, &writer
);
320 return log_warning_errno(r
, "Failed to get writer for source %s: %m",
323 if (s
->sources
[fd
] == NULL
) {
324 s
->sources
[fd
] = source_new(fd
, false, name
, writer
);
325 if (!s
->sources
[fd
]) {
326 writer_unref(writer
);
333 *source
= s
->sources
[fd
];
337 static int remove_source(RemoteServer
*s
, int fd
) {
338 RemoteSource
*source
;
341 assert(fd
>= 0 && fd
< (ssize_t
) s
->sources_size
);
343 source
= s
->sources
[fd
];
345 /* this closes fd too */
347 s
->sources
[fd
] = NULL
;
354 static int add_source(RemoteServer
*s
, int fd
, char* name
, bool own_name
) {
356 RemoteSource
*source
= NULL
;
359 /* This takes ownership of name, even on failure, if own_name is true. */
371 r
= get_source_for_fd(s
, fd
, name
, &source
);
373 log_error_errno(r
, "Failed to create source for fd:%d (%s): %m",
379 r
= sd_event_add_io(s
->events
, &source
->event
,
380 fd
, EPOLLIN
|EPOLLRDHUP
|EPOLLPRI
,
381 dispatch_raw_source_event
, source
);
383 /* Add additional source for buffer processing. It will be
385 r
= sd_event_add_defer(s
->events
, &source
->buffer_event
,
386 dispatch_raw_source_until_block
, source
);
388 sd_event_source_set_enabled(source
->buffer_event
, SD_EVENT_OFF
);
389 } else if (r
== -EPERM
) {
390 log_debug("Falling back to sd_event_add_defer for fd:%d (%s)", fd
, name
);
391 r
= sd_event_add_defer(s
->events
, &source
->event
,
392 dispatch_blocking_source_event
, source
);
394 sd_event_source_set_enabled(source
->event
, SD_EVENT_ON
);
397 log_error_errno(r
, "Failed to register event source for fd:%d: %m",
402 r
= sd_event_source_set_description(source
->event
, name
);
404 log_error_errno(r
, "Failed to set source name for fd:%d: %m", fd
);
408 return 1; /* work to do */
411 remove_source(s
, fd
);
415 static int add_raw_socket(RemoteServer
*s
, int fd
) {
417 _cleanup_close_
int fd_
= fd
;
418 char name
[sizeof("raw-socket-")-1 + DECIMAL_STR_MAX(int) + 1];
422 r
= sd_event_add_io(s
->events
, &s
->listen_event
,
424 dispatch_raw_connection_event
, s
);
428 xsprintf(name
, "raw-socket-%d", fd
);
430 r
= sd_event_source_set_description(s
->listen_event
, name
);
439 static int setup_raw_socket(RemoteServer
*s
, const char *address
) {
442 fd
= make_socket_fd(LOG_INFO
, address
, SOCK_STREAM
| SOCK_CLOEXEC
);
446 return add_raw_socket(s
, fd
);
449 /**********************************************************************
450 **********************************************************************
451 **********************************************************************/
453 static int request_meta(void **connection_cls
, int fd
, char *hostname
) {
454 RemoteSource
*source
;
458 assert(connection_cls
);
462 r
= get_writer(server
, hostname
, &writer
);
464 return log_warning_errno(r
, "Failed to get writer for source %s: %m",
467 source
= source_new(fd
, true, hostname
, writer
);
469 writer_unref(writer
);
473 log_debug("Added RemoteSource as connection metadata %p", source
);
475 *connection_cls
= source
;
479 static void request_meta_free(void *cls
,
480 struct MHD_Connection
*connection
,
481 void **connection_cls
,
482 enum MHD_RequestTerminationCode toe
) {
485 assert(connection_cls
);
489 log_debug("Cleaning up connection metadata %p", s
);
491 *connection_cls
= NULL
;
495 static int process_http_upload(
496 struct MHD_Connection
*connection
,
497 const char *upload_data
,
498 size_t *upload_data_size
,
499 RemoteSource
*source
) {
501 bool finished
= false;
507 log_trace("%s: connection %p, %zu bytes",
508 __func__
, connection
, *upload_data_size
);
510 if (*upload_data_size
) {
511 log_trace("Received %zu bytes", *upload_data_size
);
513 r
= push_data(source
, upload_data
, *upload_data_size
);
515 return mhd_respond_oom(connection
);
517 *upload_data_size
= 0;
522 r
= process_source(source
, arg_compress
, arg_seal
);
526 log_warning("Failed to process data for connection %p", connection
);
528 return mhd_respondf(connection
,
529 MHD_HTTP_REQUEST_ENTITY_TOO_LARGE
,
530 "Entry is too large, maximum is %u bytes.\n",
533 return mhd_respondf(connection
,
534 MHD_HTTP_UNPROCESSABLE_ENTITY
,
535 "Processing failed: %s.", strerror(-r
));
542 /* The upload is finished */
544 remaining
= source_non_empty(source
);
546 log_warning("Premature EOFbyte. %zu bytes lost.", remaining
);
547 return mhd_respondf(connection
, MHD_HTTP_EXPECTATION_FAILED
,
548 "Premature EOF. %zu bytes of trailing data not processed.",
552 return mhd_respond(connection
, MHD_HTTP_ACCEPTED
, "OK.\n");
555 static int request_handler(
557 struct MHD_Connection
*connection
,
561 const char *upload_data
,
562 size_t *upload_data_size
,
563 void **connection_cls
) {
567 _cleanup_free_
char *hostname
= NULL
;
570 assert(connection_cls
);
574 log_trace("Handling a connection %s %s %s", method
, url
, version
);
577 return process_http_upload(connection
,
578 upload_data
, upload_data_size
,
581 if (!streq(method
, "POST"))
582 return mhd_respond(connection
, MHD_HTTP_METHOD_NOT_ACCEPTABLE
,
583 "Unsupported method.\n");
585 if (!streq(url
, "/upload"))
586 return mhd_respond(connection
, MHD_HTTP_NOT_FOUND
,
589 header
= MHD_lookup_connection_value(connection
,
590 MHD_HEADER_KIND
, "Content-Type");
591 if (!header
|| !streq(header
, "application/vnd.fdo.journal"))
592 return mhd_respond(connection
, MHD_HTTP_UNSUPPORTED_MEDIA_TYPE
,
593 "Content-Type: application/vnd.fdo.journal"
597 const union MHD_ConnectionInfo
*ci
;
599 ci
= MHD_get_connection_info(connection
,
600 MHD_CONNECTION_INFO_CONNECTION_FD
);
602 log_error("MHD_get_connection_info failed: cannot get remote fd");
603 return mhd_respond(connection
, MHD_HTTP_INTERNAL_SERVER_ERROR
,
604 "Cannot check remote address");
611 if (server
->check_trust
) {
612 r
= check_permissions(connection
, &code
, &hostname
);
616 r
= getnameinfo_pretty(fd
, &hostname
);
618 return mhd_respond(connection
, MHD_HTTP_INTERNAL_SERVER_ERROR
,
619 "Cannot check remote hostname");
624 r
= request_meta(connection_cls
, fd
, hostname
);
626 return respond_oom(connection
);
628 return mhd_respond(connection
, MHD_HTTP_INTERNAL_SERVER_ERROR
,
635 static int setup_microhttpd_server(RemoteServer
*s
,
640 struct MHD_OptionItem opts
[] = {
641 { MHD_OPTION_NOTIFY_COMPLETED
, (intptr_t) request_meta_free
},
642 { MHD_OPTION_EXTERNAL_LOGGER
, (intptr_t) microhttpd_logger
},
643 { MHD_OPTION_LISTEN_SOCKET
, fd
},
651 MHD_USE_PEDANTIC_CHECKS
|
652 MHD_USE_EPOLL_LINUX_ONLY
|
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 */;
1262 puts(PACKAGE_STRING
);
1263 puts(SYSTEMD_FEATURES
);
1264 return 0 /* done */;
1268 log_error("cannot currently set more than one --url");
1277 log_error("cannot currently use --getter more than once");
1281 arg_getter
= optarg
;
1284 case ARG_LISTEN_RAW
:
1285 if (arg_listen_raw
) {
1286 log_error("cannot currently use --listen-raw more than once");
1290 arg_listen_raw
= optarg
;
1293 case ARG_LISTEN_HTTP
:
1294 if (arg_listen_http
|| http_socket
>= 0) {
1295 log_error("cannot currently use --listen-http more than once");
1299 r
= negative_fd(optarg
);
1303 arg_listen_http
= optarg
;
1306 case ARG_LISTEN_HTTPS
:
1307 if (arg_listen_https
|| https_socket
>= 0) {
1308 log_error("cannot currently use --listen-https more than once");
1312 r
= negative_fd(optarg
);
1316 arg_listen_https
= optarg
;
1322 log_error("Key file specified twice");
1326 arg_key
= strdup(optarg
);
1334 log_error("Certificate file specified twice");
1338 arg_cert
= strdup(optarg
);
1345 if (arg_trust
|| arg_trust_all
) {
1346 log_error("Confusing trusted CA configuration");
1350 if (streq(optarg
, "all"))
1351 arg_trust_all
= true;
1354 arg_trust
= strdup(optarg
);
1358 log_error("Option --trust is not available.");
1367 log_error("cannot use --output/-o more than once");
1371 arg_output
= optarg
;
1374 case ARG_SPLIT_MODE
:
1375 arg_split_mode
= journal_write_split_mode_from_string(optarg
);
1376 if (arg_split_mode
== _JOURNAL_WRITE_SPLIT_INVALID
) {
1377 log_error("Invalid split mode: %s", optarg
);
1384 r
= parse_boolean(optarg
);
1386 log_error("Failed to parse --compress= parameter.");
1392 arg_compress
= true;
1398 r
= parse_boolean(optarg
);
1400 log_error("Failed to parse --seal= parameter.");
1410 case ARG_GNUTLS_LOG
: {
1412 const char *word
, *state
;
1415 FOREACH_WORD_SEPARATOR(word
, size
, optarg
, ",", state
) {
1418 cat
= strndup(word
, size
);
1422 if (strv_consume(&arg_gnutls_log
, cat
) < 0)
1427 log_error("Option --gnutls-log is not available.");
1436 assert_not_reached("Unknown option code.");
1440 arg_files
= argv
+ optind
;
1442 type_a
= arg_getter
|| !strv_isempty(arg_files
);
1445 || arg_listen_http
|| arg_listen_https
1446 || sd_listen_fds(false) > 0;
1447 if (type_a
&& type_b
) {
1448 log_error("Cannot use file input or --getter with "
1449 "--arg-listen-... or socket activation.");
1454 log_error("Option --output must be specified with file input or --getter.");
1458 arg_split_mode
= JOURNAL_WRITE_SPLIT_NONE
;
1461 if (arg_split_mode
== JOURNAL_WRITE_SPLIT_NONE
1462 && arg_output
&& is_dir(arg_output
, true) > 0) {
1463 log_error("For SplitMode=none, output must be a file.");
1467 if (arg_split_mode
== JOURNAL_WRITE_SPLIT_HOST
1468 && arg_output
&& is_dir(arg_output
, true) <= 0) {
1469 log_error("For SplitMode=host, output must be a directory.");
1473 log_debug("Full config: SplitMode=%s Key=%s Cert=%s Trust=%s",
1474 journal_write_split_mode_to_string(arg_split_mode
),
1479 return 1 /* work to do */;
1482 static int load_certificates(char **key
, char **cert
, char **trust
) {
1485 r
= read_full_file(arg_key
?: PRIV_KEY_FILE
, key
, NULL
);
1487 return log_error_errno(r
, "Failed to read key from file '%s': %m",
1488 arg_key
?: PRIV_KEY_FILE
);
1490 r
= read_full_file(arg_cert
?: CERT_FILE
, cert
, NULL
);
1492 return log_error_errno(r
, "Failed to read certificate from file '%s': %m",
1493 arg_cert
?: CERT_FILE
);
1496 log_info("Certificate checking disabled.");
1498 r
= read_full_file(arg_trust
?: TRUST_FILE
, trust
, NULL
);
1500 return log_error_errno(r
, "Failed to read CA certificate file '%s': %m",
1501 arg_trust
?: TRUST_FILE
);
1507 int main(int argc
, char **argv
) {
1508 RemoteServer s
= {};
1510 _cleanup_free_
char *key
= NULL
, *cert
= NULL
, *trust
= NULL
;
1512 log_show_color(true);
1513 log_parse_environment();
1517 return EXIT_FAILURE
;
1519 r
= parse_argv(argc
, argv
);
1521 return r
== 0 ? EXIT_SUCCESS
: EXIT_FAILURE
;
1524 if (arg_listen_http
|| arg_listen_https
) {
1525 r
= setup_gnutls_logger(arg_gnutls_log
);
1527 return EXIT_FAILURE
;
1530 if (arg_listen_https
|| https_socket
>= 0)
1531 if (load_certificates(&key
, &cert
, &trust
) < 0)
1532 return EXIT_FAILURE
;
1534 if (remoteserver_init(&s
, key
, cert
, trust
) < 0)
1535 return EXIT_FAILURE
;
1537 r
= sd_event_set_watchdog(s
.events
, true);
1539 log_error_errno(r
, "Failed to enable watchdog: %m");
1541 log_debug("Watchdog is %s.", r
> 0 ? "enabled" : "disabled");
1543 log_debug("%s running as pid "PID_FMT
,
1544 program_invocation_short_name
, getpid());
1547 "STATUS=Processing requests...");
1550 r
= sd_event_get_state(s
.events
);
1553 if (r
== SD_EVENT_FINISHED
)
1556 r
= sd_event_run(s
.events
, -1);
1558 log_error_errno(r
, "Failed to run event loop: %m");
1565 "STATUS=Shutting down after writing %" PRIu64
" entries...", s
.event_count
);
1566 log_info("Finishing after writing %" PRIu64
" entries", s
.event_count
);
1574 return r
>= 0 ? EXIT_SUCCESS
: EXIT_FAILURE
;