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-rw-r--r--src/journal/journal-gatewayd.c1
-rw-r--r--src/journal/journal-remote-parse.c415
-rw-r--r--src/journal/journal-remote-parse.h60
-rw-r--r--src/journal/journal-remote-write.c124
-rw-r--r--src/journal/journal-remote-write.h51
-rw-r--r--src/journal/journal-remote.c738
6 files changed, 1389 insertions, 0 deletions
diff --git a/src/journal/journal-gatewayd.c b/src/journal/journal-gatewayd.c
index ac16a7cf26..d47b27ef7f 100644
--- a/src/journal/journal-gatewayd.c
+++ b/src/journal/journal-gatewayd.c
@@ -78,6 +78,7 @@ static const char* const mime_types[_OUTPUT_MODE_MAX] = {
static RequestMeta *request_meta(void **connection_cls) {
RequestMeta *m;
+ assert(connection_cls);
if (*connection_cls)
return *connection_cls;
diff --git a/src/journal/journal-remote-parse.c b/src/journal/journal-remote-parse.c
new file mode 100644
index 0000000000..ee2260c5a9
--- /dev/null
+++ b/src/journal/journal-remote-parse.c
@@ -0,0 +1,415 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "journal-remote-parse.h"
+#include "journald-native.h"
+
+#define LINE_CHUNK 1024u
+
+void source_free(RemoteSource *source) {
+ if (!source)
+ return;
+
+ if (source->fd >= 0) {
+ log_debug("Closing fd:%d (%s)", source->fd, source->name);
+ close(source->fd);
+ }
+ free(source->name);
+ free(source->buf);
+ iovw_free_contents(&source->iovw);
+ free(source);
+}
+
+static int get_line(RemoteSource *source, char **line, size_t *size) {
+ ssize_t n, remain;
+ char *c;
+ char *newbuf = NULL;
+ size_t newsize = 0;
+
+ assert(source);
+ assert(source->state == STATE_LINE);
+ assert(source->filled <= source->size);
+ assert(source->buf == NULL || source->size > 0);
+
+ c = memchr(source->buf, '\n', source->filled);
+ if (c != NULL)
+ goto docopy;
+
+ resize:
+ if (source->size - source->filled < LINE_CHUNK) {
+ // XXX: add check for maximum line length
+
+ if (!GREEDY_REALLOC(source->buf, source->size,
+ source->filled + LINE_CHUNK))
+ return log_oom();
+ }
+ assert(source->size - source->filled >= LINE_CHUNK);
+
+ n = read(source->fd, source->buf + source->filled,
+ source->size - source->filled);
+ if (n < 0) {
+ if (errno != EAGAIN && errno != EWOULDBLOCK)
+ log_error("read(%d, ..., %zd): %m", source->fd,
+ source->size - source->filled);
+ return -errno;
+ } else if (n == 0)
+ return 0;
+
+ c = memchr(source->buf + source->filled, '\n', n);
+ source->filled += n;
+
+ if (c == NULL)
+ goto resize;
+
+ docopy:
+ *line = source->buf;
+ *size = c + 1 - source->buf;
+
+ /* Check if something remains */
+ remain = source->buf + source->filled - c - 1;
+ assert(remain >= 0);
+ if (remain) {
+ newsize = MAX(remain, LINE_CHUNK);
+ newbuf = malloc(newsize);
+ if (!newbuf)
+ return log_oom();
+ memcpy(newbuf, c + 1, remain);
+ }
+ source->buf = newbuf;
+ source->size = newsize;
+ source->filled = remain;
+
+ return 1;
+}
+
+static int fill_fixed_size(RemoteSource *source, void **data, size_t size) {
+ int n;
+ char *newbuf = NULL;
+ size_t newsize = 0, remain;
+
+ assert(source);
+ assert(source->state == STATE_DATA_START ||
+ source->state == STATE_DATA ||
+ source->state == STATE_DATA_FINISH);
+ assert(size <= DATA_SIZE_MAX);
+ assert(source->filled <= source->size);
+ assert(source->buf != NULL || source->size == 0);
+ assert(source->buf == NULL || source->size > 0);
+ assert(data);
+
+ while(source->filled < size) {
+ if (!GREEDY_REALLOC(source->buf, source->size, size))
+ return log_oom();
+
+ n = read(source->fd, source->buf + source->filled,
+ source->size - source->filled);
+ if (n < 0) {
+ if (errno != EAGAIN && errno != EWOULDBLOCK)
+ log_error("read(%d, ..., %zd): %m", source->fd,
+ source->size - source->filled);
+ return -errno;
+ } else if (n == 0)
+ return 0;
+
+ source->filled += n;
+ }
+
+ *data = source->buf;
+
+ /* Check if something remains */
+ assert(size <= source->filled);
+ remain = source->filled - size;
+ if (remain) {
+ newsize = MAX(remain, LINE_CHUNK);
+ newbuf = malloc(newsize);
+ if (!newbuf)
+ return log_oom();
+ memcpy(newbuf, source->buf + size, remain);
+ }
+ source->buf = newbuf;
+ source->size = newsize;
+ source->filled = remain;
+
+ return 1;
+}
+
+static int get_data_size(RemoteSource *source) {
+ int r;
+ void _cleanup_free_ *data = NULL;
+
+ assert(source);
+ assert(source->state == STATE_DATA_START);
+ assert(source->data_size == 0);
+
+ r = fill_fixed_size(source, &data, sizeof(uint64_t));
+ if (r <= 0)
+ return r;
+
+ source->data_size = le64toh( *(uint64_t *) data );
+ if (source->data_size > DATA_SIZE_MAX) {
+ log_error("Stream declares field with size %zu > %u == DATA_SIZE_MAX",
+ source->data_size, DATA_SIZE_MAX);
+ return -EINVAL;
+ }
+ if (source->data_size == 0)
+ log_warning("Binary field with zero length");
+
+ return 1;
+}
+
+static int get_data_data(RemoteSource *source, void **data) {
+ int r;
+
+ assert(source);
+ assert(data);
+ assert(source->state == STATE_DATA);
+
+ r = fill_fixed_size(source, data, source->data_size);
+ if (r <= 0)
+ return r;
+
+ return 1;
+}
+
+static int get_data_newline(RemoteSource *source) {
+ int r;
+ char _cleanup_free_ *data = NULL;
+
+ assert(source);
+ assert(source->state == STATE_DATA_FINISH);
+
+ r = fill_fixed_size(source, (void**) &data, 1);
+ if (r <= 0)
+ return r;
+
+ assert(data);
+ if (*data != '\n') {
+ log_error("expected newline, got '%c'", *data);
+ return -EINVAL;
+ }
+
+ return 1;
+}
+
+static int process_dunder(RemoteSource *source, char *line, size_t n) {
+ const char *timestamp;
+ int r;
+
+ assert(line);
+ assert(n > 0);
+ assert(line[n-1] == '\n');
+
+ /* XXX: is it worth to support timestamps in extended format?
+ * We don't produce them, but who knows... */
+
+ timestamp = startswith(line, "__CURSOR=");
+ if (timestamp)
+ /* ignore __CURSOR */
+ return 1;
+
+ timestamp = startswith(line, "__REALTIME_TIMESTAMP=");
+ if (timestamp) {
+ long long unsigned x;
+ line[n-1] = '\0';
+ r = safe_atollu(timestamp, &x);
+ if (r < 0)
+ log_warning("Failed to parse __REALTIME_TIMESTAMP: '%s'", timestamp);
+ else
+ source->ts.realtime = x;
+ return r < 0 ? r : 1;
+ }
+
+ timestamp = startswith(line, "__MONOTONIC_TIMESTAMP=");
+ if (timestamp) {
+ long long unsigned x;
+ line[n-1] = '\0';
+ r = safe_atollu(timestamp, &x);
+ if (r < 0)
+ log_warning("Failed to parse __MONOTONIC_TIMESTAMP: '%s'", timestamp);
+ else
+ source->ts.monotonic = x;
+ return r < 0 ? r : 1;
+ }
+
+ timestamp = startswith(line, "__");
+ if (timestamp) {
+ log_notice("Unknown dunder line %s", line);
+ return 1;
+ }
+
+ /* no dunder */
+ return 0;
+}
+
+int process_data(RemoteSource *source) {
+ int r;
+
+ switch(source->state) {
+ case STATE_LINE: {
+ char *line, *sep;
+ size_t n;
+
+ assert(source->data_size == 0);
+
+ r = get_line(source, &line, &n);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ source->state = STATE_EOF;
+ return r;
+ }
+ assert(n > 0);
+ assert(line[n-1] == '\n');
+
+ if (n == 1) {
+ log_debug("Received empty line, event is ready");
+ free(line);
+ return 1;
+ }
+
+ r = process_dunder(source, line, n);
+ if (r != 0) {
+ free(line);
+ return r < 0 ? r : 0;
+ }
+
+ /* MESSAGE=xxx\n
+ or
+ COREDUMP\n
+ LLLLLLLL0011223344...\n
+ */
+ sep = memchr(line, '=', n);
+ if (sep)
+ /* chomp newline */
+ n--;
+ else
+ /* replace \n with = */
+ line[n-1] = '=';
+ log_debug("Received: %.*s", (int) n, line);
+
+ r = iovw_put(&source->iovw, line, n);
+ if (r < 0) {
+ log_error("Failed to put line in iovect");
+ free(line);
+ return r;
+ }
+
+ if (!sep)
+ source->state = STATE_DATA_START;
+ return 0; /* continue */
+ }
+
+ case STATE_DATA_START:
+ assert(source->data_size == 0);
+
+ r = get_data_size(source);
+ log_debug("get_data_size() -> %d", r);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ source->state = STATE_EOF;
+ return 0;
+ }
+
+ source->state = source->data_size > 0 ?
+ STATE_DATA : STATE_DATA_FINISH;
+
+ return 0; /* continue */
+
+ case STATE_DATA: {
+ void *data;
+
+ assert(source->data_size > 0);
+
+ r = get_data_data(source, &data);
+ log_debug("get_data_data() -> %d", r);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ source->state = STATE_EOF;
+ return 0;
+ }
+
+ assert(data);
+
+ r = iovw_put(&source->iovw, data, source->data_size);
+ if (r < 0) {
+ log_error("failed to put binary buffer in iovect");
+ return r;
+ }
+
+ source->state = STATE_DATA_FINISH;
+
+ return 0; /* continue */
+ }
+
+ case STATE_DATA_FINISH:
+ r = get_data_newline(source);
+ log_debug("get_data_newline() -> %d", r);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ source->state = STATE_EOF;
+ return 0;
+ }
+
+ source->data_size = 0;
+ source->state = STATE_LINE;
+
+ return 0; /* continue */
+ default:
+ assert_not_reached("wtf?");
+ }
+}
+
+int process_source(RemoteSource *source, Writer *writer, bool compress, bool seal) {
+ int r;
+
+ assert(source);
+ assert(writer);
+
+ r = process_data(source);
+ if (r <= 0)
+ return r;
+
+ /* We have a full event */
+ log_info("Received a full event from source@%p fd:%d (%s)",
+ source, source->fd, source->name);
+
+ if (!source->iovw.count) {
+ log_warning("Entry with no payload, skipping");
+ goto freeing;
+ }
+
+ assert(source->iovw.iovec);
+ assert(source->iovw.count);
+
+ r = writer_write(writer, &source->iovw, &source->ts, compress, seal);
+ if (r < 0)
+ log_error("Failed to write entry of %zu bytes: %s",
+ iovw_size(&source->iovw), strerror(-r));
+ else
+ r = 1;
+
+ freeing:
+ iovw_free_contents(&source->iovw);
+ return r;
+}
diff --git a/src/journal/journal-remote-parse.h b/src/journal/journal-remote-parse.h
new file mode 100644
index 0000000000..3bda97e2d4
--- /dev/null
+++ b/src/journal/journal-remote-parse.h
@@ -0,0 +1,60 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#pragma once
+
+#include "sd-event.h"
+#include "journal-remote-write.h"
+
+typedef enum {
+ STATE_LINE = 0, /* waiting to read, or reading line */
+ STATE_DATA_START, /* reading binary data header */
+ STATE_DATA, /* reading binary data */
+ STATE_DATA_FINISH, /* expecting newline */
+ STATE_EOF, /* done */
+} source_state;
+
+typedef struct RemoteSource {
+ char* name;
+ int fd;
+
+ char *buf;
+ size_t size;
+ size_t filled;
+ size_t data_size;
+
+ struct iovec_wrapper iovw;
+
+ source_state state;
+ dual_timestamp ts;
+
+ sd_event_source *event;
+} RemoteSource;
+
+static inline int source_non_empty(RemoteSource *source) {
+ assert(source);
+
+ return source->filled > 0;
+}
+
+void source_free(RemoteSource *source);
+int process_data(RemoteSource *source);
+int process_source(RemoteSource *source, Writer *writer, bool compress, bool seal);
diff --git a/src/journal/journal-remote-write.c b/src/journal/journal-remote-write.c
new file mode 100644
index 0000000000..4d142bdc97
--- /dev/null
+++ b/src/journal/journal-remote-write.c
@@ -0,0 +1,124 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "journal-remote-write.h"
+
+int iovw_put(struct iovec_wrapper *iovw, void* data, size_t len) {
+ if (!GREEDY_REALLOC(iovw->iovec, iovw->size_bytes, iovw->count + 1))
+ return log_oom();
+
+ iovw->iovec[iovw->count++] = (struct iovec) {data, len};
+ return 0;
+}
+
+void iovw_free_contents(struct iovec_wrapper *iovw) {
+ for (size_t j = 0; j < iovw->count; j++)
+ free(iovw->iovec[j].iov_base);
+ free(iovw->iovec);
+ iovw->iovec = NULL;
+ iovw->size_bytes = iovw->count = 0;
+}
+
+size_t iovw_size(struct iovec_wrapper *iovw) {
+ size_t n = 0, i;
+
+ for(i = 0; i < iovw->count; i++)
+ n += iovw->iovec[i].iov_len;
+
+ return n;
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int do_rotate(JournalFile **f, bool compress, bool seal) {
+ int r = journal_file_rotate(f, compress, seal);
+ if (r < 0) {
+ if (*f)
+ log_error("Failed to rotate %s: %s", (*f)->path,
+ strerror(-r));
+ else
+ log_error("Failed to create rotated journal: %s",
+ strerror(-r));
+ }
+
+ return r;
+}
+
+int writer_init(Writer *s) {
+ assert(s);
+
+ s->journal = NULL;
+
+ memset(&s->metrics, 0xFF, sizeof(s->metrics));
+
+ s->mmap = mmap_cache_new();
+ if (!s->mmap)
+ return log_oom();
+
+ s->seqnum = 0;
+
+ return 0;
+}
+
+int writer_close(Writer *s) {
+ if (s->journal)
+ journal_file_close(s->journal);
+ if (s->mmap)
+ mmap_cache_unref(s->mmap);
+ return 0;
+}
+
+int writer_write(Writer *s,
+ struct iovec_wrapper *iovw,
+ dual_timestamp *ts,
+ bool compress,
+ bool seal) {
+ int r;
+
+ assert(s);
+ assert(iovw);
+ assert(iovw->count > 0);
+
+ if (journal_file_rotate_suggested(s->journal, 0)) {
+ log_info("%s: Journal header limits reached or header out-of-date, rotating",
+ s->journal->path);
+ r = do_rotate(&s->journal, compress, seal);
+ if (r < 0)
+ return r;
+ }
+
+ r = journal_file_append_entry(s->journal, ts, iovw->iovec, iovw->count,
+ &s->seqnum, NULL, NULL);
+ if (r >= 0)
+ return 1;
+
+ log_info("%s: Write failed, rotating", s->journal->path);
+ r = do_rotate(&s->journal, compress, seal);
+ if (r < 0)
+ return r;
+
+ log_debug("Retrying write.");
+ r = journal_file_append_entry(s->journal, ts, iovw->iovec, iovw->count,
+ &s->seqnum, NULL, NULL);
+ return r < 0 ? r : 1;
+}
diff --git a/src/journal/journal-remote-write.h b/src/journal/journal-remote-write.h
new file mode 100644
index 0000000000..8798216415
--- /dev/null
+++ b/src/journal/journal-remote-write.h
@@ -0,0 +1,51 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#pragma once
+
+#include <stdlib.h>
+
+#include "journal-file.h"
+
+struct iovec_wrapper {
+ struct iovec *iovec;
+ size_t size_bytes;
+ size_t count;
+};
+
+int iovw_put(struct iovec_wrapper *iovw, void* data, size_t len);
+void iovw_free_contents(struct iovec_wrapper *iovw);
+size_t iovw_size(struct iovec_wrapper *iovw);
+
+typedef struct Writer {
+ JournalFile *journal;
+ JournalMetrics metrics;
+ MMapCache *mmap;
+ uint64_t seqnum;
+} Writer;
+
+int writer_init(Writer *s);
+int writer_close(Writer *s);
+int writer_write(Writer *s,
+ struct iovec_wrapper *iovw,
+ dual_timestamp *ts,
+ bool compress,
+ bool seal);
diff --git a/src/journal/journal-remote.c b/src/journal/journal-remote.c
new file mode 100644
index 0000000000..f8979daca6
--- /dev/null
+++ b/src/journal/journal-remote.c
@@ -0,0 +1,738 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/prctl.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <getopt.h>
+
+#include "sd-daemon.h"
+#include "sd-event.h"
+#include "journal-file.h"
+#include "journald-native.h"
+#include "socket-util.h"
+#include "mkdir.h"
+#include "build.h"
+#include "macro.h"
+#include "strv.h"
+
+#include "journal-remote-parse.h"
+#include "journal-remote-write.h"
+
+#define REMOTE_JOURNAL_PATH "/var/log/journal/" SD_ID128_FORMAT_STR "/remote-%s.journal"
+
+static char* arg_output = NULL;
+static char* arg_url = NULL;
+static char* arg_getter = NULL;
+static bool arg_stdin = false;
+static char* arg_listen_raw = NULL;
+static int arg_compress = true;
+static int arg_seal = false;
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int spawn_child(const char* child, char** argv) {
+ int fd[2];
+ pid_t parent_pid, child_pid;
+ int r;
+
+ if (pipe(fd) < 0) {
+ log_error("Failed to create pager pipe: %m");
+ return -errno;
+ }
+
+ parent_pid = getpid();
+
+ child_pid = fork();
+ if (child_pid < 0) {
+ r = -errno;
+ log_error("Failed to fork: %m");
+ close_pipe(fd);
+ return r;
+ }
+
+ /* In the child */
+ if (child_pid == 0) {
+ r = dup2(fd[1], STDOUT_FILENO);
+ if (r < 0) {
+ log_error("Failed to dup pipe to stdout: %m");
+ _exit(EXIT_FAILURE);
+ }
+
+ r = close_pipe(fd);
+ if (r < 0)
+ log_warning("Failed to close pipe fds: %m");
+
+ /* Make sure the child goes away when the parent dies */
+ if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0)
+ _exit(EXIT_FAILURE);
+
+ /* Check whether our parent died before we were able
+ * to set the death signal */
+ if (getppid() != parent_pid)
+ _exit(EXIT_SUCCESS);
+
+ execvp(child, argv);
+ log_error("Failed to exec child %s: %m", child);
+ _exit(EXIT_FAILURE);
+ }
+
+ r = close(fd[1]);
+ if (r < 0)
+ log_warning("Failed to close write end of pipe: %m");
+
+ return fd[0];
+}
+
+static int spawn_curl(char* url) {
+ char **argv = STRV_MAKE("curl",
+ "-HAccept: application/vnd.fdo.journal",
+ "--silent",
+ "--show-error",
+ url);
+ int r;
+
+ r = spawn_child("curl", argv);
+ if (r < 0)
+ log_error("Failed to spawn curl: %m");
+ return r;
+}
+
+static int spawn_getter(char *getter, char *url) {
+ int r;
+ char _cleanup_strv_free_ **words = NULL, **words2 = NULL;
+
+ assert(getter);
+ words = strv_split_quoted(getter);
+ if (!words)
+ return log_oom();
+
+ r = spawn_child(words[0], words);
+ if (r < 0)
+ log_error("Failed to spawn getter %s: %m", getter);
+
+ return r;
+}
+
+static int open_output(Writer *s, const char* url) {
+ char _cleanup_free_ *name, *output = NULL;
+ char *c;
+ int r;
+
+ assert(url);
+ name = strdup(url);
+ if (!name)
+ return log_oom();
+
+ for(c = name; *c; c++) {
+ if (*c == '/' || *c == ':' || *c == ' ')
+ *c = '~';
+ else if (*c == '?') {
+ *c = '\0';
+ break;
+ }
+ }
+
+ if (!arg_output) {
+ sd_id128_t machine;
+ r = sd_id128_get_machine(&machine);
+ if (r < 0) {
+ log_error("failed to determine machine ID128: %s", strerror(-r));
+ return r;
+ }
+
+ r = asprintf(&output, REMOTE_JOURNAL_PATH,
+ SD_ID128_FORMAT_VAL(machine), name);
+ if (r < 0)
+ return log_oom();
+ } else {
+ r = is_dir(arg_output);
+ if (r > 0) {
+ r = asprintf(&output,
+ "%s/remote-%s.journal", arg_output, name);
+ if (r < 0)
+ return log_oom();
+ } else {
+ output = strdup(arg_output);
+ if (!output)
+ return log_oom();
+ }
+ }
+
+ r = journal_file_open_reliably(output,
+ O_RDWR|O_CREAT, 0640,
+ arg_compress, arg_seal,
+ &s->metrics,
+ s->mmap,
+ NULL, &s->journal);
+ if (r < 0)
+ log_error("Failed to open output journal %s: %s",
+ arg_output, strerror(-r));
+ else
+ log_info("Opened output file %s", s->journal->path);
+ return r;
+}
+
+typedef struct RemoteServer {
+ RemoteSource **sources;
+ ssize_t sources_size;
+ ssize_t active;
+
+ sd_event *events;
+ sd_event_source *sigterm_event, *sigint_event, *listen_event;
+
+ Writer writer;
+} RemoteServer;
+
+static int dispatch_raw_source_event(sd_event_source *event,
+ int fd,
+ uint32_t revents,
+ void *userdata);
+static int dispatch_raw_connection_event(sd_event_source *event,
+ int fd,
+ uint32_t revents,
+ void *userdata);
+
+static int get_source_for_fd(RemoteServer *s, int fd, RemoteSource **source) {
+ assert(fd >= 0);
+ assert(source);
+
+ if (!GREEDY_REALLOC0_T(s->sources, s->sources_size, fd + 1))
+ return log_oom();
+
+ if (s->sources[fd] == NULL) {
+ s->sources[fd] = new0(RemoteSource, 1);
+ if (!s->sources[fd])
+ return log_oom();
+ s->sources[fd]->fd = -1;
+ s->active++;
+ }
+
+ *source = s->sources[fd];
+ return 0;
+}
+
+static int remove_source(RemoteServer *s, int fd) {
+ RemoteSource *source;
+
+ assert(s);
+ assert(fd >= 0);
+ assert(fd < s->sources_size);
+
+ source = s->sources[fd];
+ if (source) {
+ source_free(source);
+ s->sources[fd] = NULL;
+ s->active--;
+ }
+
+ close(fd);
+
+ return 0;
+}
+
+static int add_source(RemoteServer *s, int fd, const char* name) {
+ RemoteSource *source = NULL;
+ char *realname;
+ int r;
+
+ assert(s);
+ assert(fd >= 0);
+
+ if (name) {
+ realname = strdup(name);
+ if (!realname)
+ return log_oom();
+ } else {
+ r = asprintf(&realname, "fd:%d", fd);
+ if (r < 0)
+ return log_oom();
+ }
+
+ log_debug("Creating source for fd:%d (%s)", fd, name);
+
+ r = get_source_for_fd(s, fd, &source);
+ if (r < 0) {
+ log_error("Failed to create source for fd:%d (%s)", fd, name);
+ return r;
+ }
+ assert(source);
+ assert(source->fd < 0);
+ source->fd = fd;
+
+ r = sd_event_add_io(s->events, &source->event,
+ fd, EPOLLIN, dispatch_raw_source_event, s);
+ if (r < 0) {
+ log_error("Failed to register event source for fd:%d: %s",
+ fd, strerror(-r));
+ goto error;
+ }
+
+ return 1; /* work to do */
+
+ error:
+ remove_source(s, fd);
+ return r;
+}
+
+static int setup_raw_socket(RemoteServer *s, const char *address) {
+ int fd, r;
+
+ fd = make_socket_fd(LOG_INFO, address, SOCK_STREAM | SOCK_CLOEXEC);
+ if (fd < 0)
+ return fd;
+
+ r = sd_event_add_io(s->events, &s->listen_event, fd, EPOLLIN,
+ dispatch_raw_connection_event, s);
+ if (r < 0) {
+ close(fd);
+ return r;
+ }
+
+ s->active ++;
+ return 0;
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int dispatch_sigterm(sd_event_source *event,
+ const struct signalfd_siginfo *si,
+ void *userdata) {
+ RemoteServer *s = userdata;
+
+ assert(s);
+
+ log_received_signal(LOG_INFO, si);
+
+ sd_event_exit(s->events, 0);
+ return 0;
+}
+
+static int setup_signals(RemoteServer *s) {
+ sigset_t mask;
+ int r;
+
+ assert(s);
+
+ assert_se(sigemptyset(&mask) == 0);
+ sigset_add_many(&mask, SIGINT, SIGTERM, -1);
+ assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+
+ r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, dispatch_sigterm, s);
+ if (r < 0)
+ return r;
+
+ r = sd_event_add_signal(s->events, &s->sigint_event, SIGINT, dispatch_sigterm, s);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int remoteserver_init(RemoteServer *s) {
+ int r, n, fd;
+ const char *output_name = NULL;
+
+ assert(s);
+
+ sd_event_default(&s->events);
+
+ setup_signals(s);
+
+ n = sd_listen_fds(true);
+ if (n < 0) {
+ log_error("Failed to read listening file descriptors from environment: %s",
+ strerror(-n));
+ return n;
+ } else
+ log_info("Received %d descriptors", n);
+
+ for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
+ if (sd_is_socket(fd, AF_UNSPEC, 0, false)) {
+ assert_not_reached("not implemented");
+ } else if (sd_is_socket(fd, AF_UNSPEC, 0, true)) {
+ log_info("Received a connection socket (fd:%d)", fd);
+
+ r = add_source(s, fd, NULL);
+ output_name = "socket";
+ } else {
+ log_error("Unknown socket passed on fd:%d", fd);
+ return -EINVAL;
+ }
+ }
+
+ if (arg_url) {
+ char _cleanup_free_ *url = NULL;
+ char _cleanup_strv_free_ **urlv = strv_new(arg_url, "/entries", NULL);
+ if (!urlv)
+ return log_oom();
+ url = strv_join(urlv, "");
+ if (!url)
+ return log_oom();
+
+ if (arg_getter) {
+ log_info("Spawning getter %s...", url);
+ fd = spawn_getter(arg_getter, url);
+ } else {
+ log_info("Spawning curl %s...", url);
+ fd = spawn_curl(url);
+ }
+ if (fd < 0)
+ return fd;
+
+ r = add_source(s, fd, arg_url);
+ if (r < 0)
+ return r;
+
+ output_name = arg_url;
+ }
+
+ if (arg_listen_raw) {
+ log_info("Listening on a socket...");
+ r = setup_raw_socket(s, arg_listen_raw);
+ if (r < 0)
+ return r;
+
+ output_name = arg_listen_raw;
+ }
+
+ if (arg_stdin) {
+ log_info("Reading standard input...");
+ r = add_source(s, STDIN_FILENO, "stdin");
+ if (r < 0)
+ return r;
+
+ output_name = "stdin";
+ }
+
+ if (s->active == 0) {
+ log_error("Zarro sources specified");
+ return -EINVAL;
+ }
+
+ if (!!n + !!arg_url + !!arg_listen_raw + !!arg_stdin > 1)
+ output_name = "multiple";
+
+ r = writer_init(&s->writer);
+ if (r < 0)
+ return r;
+
+ r = open_output(&s->writer, output_name);
+ return r;
+}
+
+static int server_destroy(RemoteServer *s) {
+ int r;
+ ssize_t i;
+
+ r = writer_close(&s->writer);
+
+ assert(s->sources_size == 0 || s->sources);
+ for(i = 0; i < s->sources_size; i++)
+ remove_source(s, i);
+
+ free(s->sources);
+
+ sd_event_source_unref(s->sigterm_event);
+ sd_event_source_unref(s->sigint_event);
+ sd_event_source_unref(s->listen_event);
+ sd_event_unref(s->events);
+
+ /* fds that we're listening on remain open... */
+
+ return r;
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int dispatch_raw_source_event(sd_event_source *event,
+ int fd,
+ uint32_t revents,
+ void *userdata) {
+
+ RemoteServer *s = userdata;
+ RemoteSource *source;
+ int r;
+
+ assert(fd < s->sources_size);
+ source = s->sources[fd];
+ assert(source->fd == fd);
+
+ r = process_source(source, &s->writer, arg_compress, arg_seal);
+ if (source->state == STATE_EOF) {
+ log_info("EOF reached with source fd:%d (%s)",
+ source->fd, source->name);
+ if (source_non_empty(source))
+ log_warning("EOF reached with incomplete data");
+ remove_source(s, source->fd);
+ log_info("%zd active source remaining", s->active);
+ } else if (r == -E2BIG) {
+ log_error("Entry too big, skipped");
+ r = 1;
+ }
+
+ return r;
+}
+
+static int dispatch_raw_connection_event(sd_event_source *event,
+ int fd,
+ uint32_t revents,
+ void *userdata) {
+ RemoteServer *s = userdata;
+
+ SocketAddress addr = {
+ .size = sizeof(union sockaddr_union),
+ .type = SOCK_STREAM,
+ };
+ int fd2, r;
+
+ log_debug("Accepting new connection on fd:%d", fd);
+ fd2 = accept4(fd, &addr.sockaddr.sa, &addr.size, SOCK_NONBLOCK|SOCK_CLOEXEC);
+ if (fd2 < 0) {
+ log_error("accept() on fd:%d failed: %m", fd);
+ return -errno;
+ }
+
+ switch(socket_address_family(&addr)) {
+ case AF_INET:
+ case AF_INET6: {
+ char* _cleanup_free_ a = NULL;
+
+ r = socket_address_print(&addr, &a);
+ if (r < 0) {
+ log_error("socket_address_print(): %s", strerror(-r));
+ close(fd2);
+ return r;
+ }
+
+ log_info("Accepted %s connection from %s",
+ socket_address_family(&addr) == AF_INET ? "IP" : "IPv6",
+ a);
+ break;
+ };
+ default:
+ log_error("Connection with unsupported family %d",
+ socket_address_family(&addr));
+ close(fd2);
+ return -EINVAL;
+ }
+
+ r = add_source(s, fd2, NULL);
+ if (r < 0)
+ log_error("failed to create source from fd:%d: %s", fd2, strerror(-r));
+
+ return r;
+}
+
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int help(void) {
+ printf("%s [OPTIONS...]\n\n"
+ "Write external journal events to a journal file.\n\n"
+ "Options:\n"
+ " --url=URL Read events from systemd-journal-gatewayd at URL\n"
+ " --getter=COMMAND Read events from the output of COMMAND\n"
+ " --listen-raw=ADDR Listen for connections at ADDR\n"
+ " --stdin Read events from standard input\n"
+ " -o --output=FILE|DIR Write output to FILE or DIR/external-*.journal\n"
+ " --[no-]compress Use XZ-compression in the output journal (default: yes)\n"
+ " --[no-]seal Use Event sealing in the output journal (default: no)\n"
+ " -h --help Show this help and exit\n"
+ " --version Print version string and exit\n"
+ "\n"
+ "Note: file descriptors from sd_listen_fds() will be consumed, too.\n"
+ , program_invocation_short_name);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_URL,
+ ARG_LISTEN_RAW,
+ ARG_STDIN,
+ ARG_GETTER,
+ ARG_COMPRESS,
+ ARG_NO_COMPRESS,
+ ARG_SEAL,
+ ARG_NO_SEAL,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "url", required_argument, NULL, ARG_URL },
+ { "getter", required_argument, NULL, ARG_GETTER },
+ { "listen-raw", required_argument, NULL, ARG_LISTEN_RAW },
+ { "stdin", no_argument, NULL, ARG_STDIN },
+ { "output", required_argument, NULL, 'o' },
+ { "compress", no_argument, NULL, ARG_COMPRESS },
+ { "no-compress", no_argument, NULL, ARG_NO_COMPRESS },
+ { "seal", no_argument, NULL, ARG_SEAL },
+ { "no-seal", no_argument, NULL, ARG_NO_SEAL },
+ {}
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "ho:", options, NULL)) >= 0)
+ switch(c) {
+ case 'h':
+ help();
+ return 0 /* done */;
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0 /* done */;
+
+ case ARG_URL:
+ if (arg_url) {
+ log_error("cannot currently set more than one --url");
+ return -EINVAL;
+ }
+
+ arg_url = optarg;
+ break;
+
+ case ARG_GETTER:
+ if (arg_getter) {
+ log_error("cannot currently use --getter more than once");
+ return -EINVAL;
+ }
+
+ arg_getter = optarg;
+ break;
+
+ case ARG_LISTEN_RAW:
+ if (arg_listen_raw) {
+ log_error("cannot currently use --listen-raw more than once");
+ return -EINVAL;
+ }
+
+ arg_listen_raw = optarg;
+ break;
+
+ case ARG_STDIN:
+ arg_stdin = true;
+ break;
+
+ case 'o':
+ if (arg_output) {
+ log_error("cannot use --output/-o more than once");
+ return -EINVAL;
+ }
+
+ arg_output = optarg;
+ break;
+
+ case ARG_COMPRESS:
+ arg_compress = true;
+ break;
+ case ARG_NO_COMPRESS:
+ arg_compress = false;
+ break;
+ case ARG_SEAL:
+ arg_seal = true;
+ break;
+ case ARG_NO_SEAL:
+ arg_seal = false;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+
+ if (optind < argc) {
+ log_error("This program takes no positional arguments");
+ return -EINVAL;
+ }
+
+ return 1 /* work to do */;
+}
+
+int main(int argc, char **argv) {
+ RemoteServer s = {};
+ int r, r2;
+
+ log_set_max_level(LOG_DEBUG);
+ log_show_color(true);
+ log_parse_environment();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+
+ if (remoteserver_init(&s) < 0)
+ return EXIT_FAILURE;
+
+ log_debug("%s running as pid %lu",
+ program_invocation_short_name, (unsigned long) getpid());
+ sd_notify(false,
+ "READY=1\n"
+ "STATUS=Processing requests...");
+
+ while (s.active) {
+ r = sd_event_get_state(s.events);
+ if (r < 0)
+ break;
+ if (r == SD_EVENT_FINISHED)
+ break;
+
+ r = sd_event_run(s.events, -1);
+ if (r < 0) {
+ log_error("Failed to run event loop: %s", strerror(-r));
+ break;
+ }
+ }
+
+ log_info("Finishing after writing %" PRIu64 " entries", s.writer.seqnum);
+ r2 = server_destroy(&s);
+
+ sd_notify(false, "STATUS=Shutting down...");
+
+ return r >= 0 && r2 >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-08 14:32:50 +0000