stuff

8 files changed, 2557 insertions, 0 deletions

diff --git a/src/grp-journal/grp-remote/systemd-journal-remote/Makefile b/src/grp-journal/grp-remote/systemd-journal-remote/Makefile
new file mode 100644
index 0000000000..05af76afc2
--- /dev/null
+++ b/src/grp-journal/grp-remote/systemd-journal-remote/Makefile
@@ -0,0 +1,85 @@
+#  -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+#  This file is part of systemd.
+#
+#  Copyright 2010-2012 Lennart Poettering
+#  Copyright 2010-2012 Kay Sievers
+#  Copyright 2013 Zbigniew Jędrzejewski-Szmek
+#  Copyright 2013 David Strauss
+#  Copyright 2016 Luke Shumaker
+#
+#  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 $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+ifneq ($(HAVE_MICROHTTPD),)
+rootlibexec_PROGRAMS += \
+	systemd-journal-remote
+
+systemd_journal_remote_SOURCES = \
+	src/journal-remote/journal-remote-parse.h \
+	src/journal-remote/journal-remote-parse.c \
+	src/journal-remote/journal-remote-write.h \
+	src/journal-remote/journal-remote-write.c \
+	src/journal-remote/journal-remote.h \
+	src/journal-remote/journal-remote.c
+
+systemd_journal_remote_LDADD = \
+	libjournal-core.la
+
+systemd_journal_remote_SOURCES += \
+	src/journal-remote/microhttpd-util.h \
+	src/journal-remote/microhttpd-util.c
+
+systemd_journal_remote_CFLAGS = \
+	$(AM_CFLAGS) \
+	$(MICROHTTPD_CFLAGS)
+
+systemd_journal_remote_LDADD += \
+	$(MICROHTTPD_LIBS)
+
+ifneq ($(ENABLE_TMPFILES),)
+dist_tmpfiles_DATA += \
+	tmpfiles.d/systemd-remote.conf
+endif # ENABLE_TMPFILES
+
+ifneq ($(HAVE_GNUTLS),)
+systemd_journal_remote_LDADD += \
+	$(GNUTLS_LIBS)
+endif # HAVE_GNUTLS
+
+# systemd-journal-remote make sense mostly with full crypto stack
+dist_systemunit_DATA += \
+	units/systemd-journal-remote.socket
+
+nodist_systemunit_DATA += \
+	units/systemd-journal-remote.service
+
+journal-remote-install-hook: journal-install-hook
+	-$(MKDIR_P) $(DESTDIR)/var/log/journal/remote
+	-chown 0:0 $(DESTDIR)/var/log/journal/remote
+	-chmod 755 $(DESTDIR)/var/log/journal/remote
+
+INSTALL_EXEC_HOOKS += journal-remote-install-hook
+
+nodist_pkgsysconf_DATA += \
+	src/journal-remote/journal-remote.conf
+
+EXTRA_DIST += \
+	units/systemd-journal-remote.service.in \
+	src/journal-remote/journal-remote.conf.in \
+	src/journal-remote/log-generator.py
+endif # HAVE_MICROHTTPD
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-parse.c b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-parse.c
new file mode 100644
index 0000000000..ec5358fb97
--- /dev/null
+++ b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-parse.c
@@ -0,0 +1,506 @@
+/***
+  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 "basic/alloc-util.h"
+#include "basic/fd-util.h"
+#include "journal-remote-parse.h"
+#include "journald-native.h"
+#include "basic/parse-util.h"
+#include "basic/string-util.h"
+
+#define LINE_CHUNK 8*1024u
+
+void source_free(RemoteSource *source) {
+        if (!source)
+                return;
+
+        if (source->fd >= 0 && !source->passive_fd) {
+                log_debug("Closing fd:%d (%s)", source->fd, source->name);
+                safe_close(source->fd);
+        }
+
+        free(source->name);
+        free(source->buf);
+        iovw_free_contents(&source->iovw);
+
+        log_debug("Writer ref count %i", source->writer->n_ref);
+        writer_unref(source->writer);
+
+        sd_event_source_unref(source->event);
+        sd_event_source_unref(source->buffer_event);
+
+        free(source);
+}
+
+/**
+ * Initialize zero-filled source with given values. On success, takes
+ * ownerhship of fd and writer, otherwise does not touch them.
+ */
+RemoteSource* source_new(int fd, bool passive_fd, char *name, Writer *writer) {
+
+        RemoteSource *source;
+
+        log_debug("Creating source for %sfd:%d (%s)",
+                  passive_fd ? "passive " : "", fd, name);
+
+        assert(fd >= 0);
+
+        source = new0(RemoteSource, 1);
+        if (!source)
+                return NULL;
+
+        source->fd = fd;
+        source->passive_fd = passive_fd;
+        source->name = name;
+        source->writer = writer;
+
+        return source;
+}
+
+static char* realloc_buffer(RemoteSource *source, size_t size) {
+        char *b, *old = source->buf;
+
+        b = GREEDY_REALLOC(source->buf, source->size, size);
+        if (!b)
+                return NULL;
+
+        iovw_rebase(&source->iovw, old, source->buf);
+
+        return b;
+}
+
+static int get_line(RemoteSource *source, char **line, size_t *size) {
+        ssize_t n;
+        char *c = NULL;
+
+        assert(source);
+        assert(source->state == STATE_LINE);
+        assert(source->offset <= source->filled);
+        assert(source->filled <= source->size);
+        assert(source->buf == NULL || source->size > 0);
+        assert(source->fd >= 0);
+
+        for (;;) {
+                if (source->buf) {
+                        size_t start = MAX(source->scanned, source->offset);
+
+                        c = memchr(source->buf + start, '\n',
+                                   source->filled - start);
+                        if (c != NULL)
+                                break;
+                }
+
+                source->scanned = source->filled;
+                if (source->scanned >= DATA_SIZE_MAX) {
+                        log_error("Entry is bigger than %u bytes.", DATA_SIZE_MAX);
+                        return -E2BIG;
+                }
+
+                if (source->passive_fd)
+                        /* we have to wait for some data to come to us */
+                        return -EAGAIN;
+
+                /* We know that source->filled is at most DATA_SIZE_MAX, so if
+                   we reallocate it, we'll increase the size at least a bit. */
+                assert_cc(DATA_SIZE_MAX < ENTRY_SIZE_MAX);
+                if (source->size - source->filled < LINE_CHUNK &&
+                    !realloc_buffer(source, MIN(source->filled + LINE_CHUNK, ENTRY_SIZE_MAX)))
+                                return log_oom();
+
+                assert(source->buf);
+                assert(source->size - source->filled >= LINE_CHUNK ||
+                       source->size == ENTRY_SIZE_MAX);
+
+                n = read(source->fd,
+                         source->buf + source->filled,
+                         source->size - source->filled);
+                if (n < 0) {
+                        if (errno != EAGAIN)
+                                log_error_errno(errno, "read(%d, ..., %zu): %m",
+                                                source->fd,
+                                                source->size - source->filled);
+                        return -errno;
+                } else if (n == 0)
+                        return 0;
+
+                source->filled += n;
+        }
+
+        *line = source->buf + source->offset;
+        *size = c + 1 - source->buf - source->offset;
+        source->offset += *size;
+
+        return 1;
+}
+
+int push_data(RemoteSource *source, const char *data, size_t size) {
+        assert(source);
+        assert(source->state != STATE_EOF);
+
+        if (!realloc_buffer(source, source->filled + size)) {
+                log_error("Failed to store received data of size %zu "
+                          "(in addition to existing %zu bytes with %zu filled): %s",
+                          size, source->size, source->filled, strerror(ENOMEM));
+                return -ENOMEM;
+        }
+
+        memcpy(source->buf + source->filled, data, size);
+        source->filled += size;
+
+        return 0;
+}
+
+static int fill_fixed_size(RemoteSource *source, void **data, size_t size) {
+
+        assert(source);
+        assert(source->state == STATE_DATA_START ||
+               source->state == STATE_DATA ||
+               source->state == STATE_DATA_FINISH);
+        assert(size <= DATA_SIZE_MAX);
+        assert(source->offset <= source->filled);
+        assert(source->filled <= source->size);
+        assert(source->buf != NULL || source->size == 0);
+        assert(source->buf == NULL || source->size > 0);
+        assert(source->fd >= 0);
+        assert(data);
+
+        while (source->filled - source->offset < size) {
+                int n;
+
+                if (source->passive_fd)
+                        /* we have to wait for some data to come to us */
+                        return -EAGAIN;
+
+                if (!realloc_buffer(source, source->offset + size))
+                        return log_oom();
+
+                n = read(source->fd, source->buf + source->filled,
+                         source->size - source->filled);
+                if (n < 0) {
+                        if (errno != EAGAIN)
+                                log_error_errno(errno, "read(%d, ..., %zu): %m", source->fd,
+                                                source->size - source->filled);
+                        return -errno;
+                } else if (n == 0)
+                        return 0;
+
+                source->filled += n;
+        }
+
+        *data = source->buf + source->offset;
+        source->offset += size;
+
+        return 1;
+}
+
+static int get_data_size(RemoteSource *source) {
+        int r;
+        void *data;
+
+        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 > DATA_SIZE_MAX = %u",
+                          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 *data;
+
+        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;
+}
+
+static int process_data(RemoteSource *source) {
+        int r;
+
+        switch(source->state) {
+        case STATE_LINE: {
+                char *line, *sep;
+                size_t n = 0;
+
+                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_trace("Received empty line, event is ready");
+                        return 1;
+                }
+
+                r = process_dunder(source, line, n);
+                if (r != 0)
+                        return r < 0 ? r : 0;
+
+                /* MESSAGE=xxx\n
+                   or
+                   COREDUMP\n
+                   LLLLLLLL0011223344...\n
+                */
+                sep = memchr(line, '=', n);
+                if (sep) {
+                        /* chomp newline */
+                        n--;
+
+                        r = iovw_put(&source->iovw, line, n);
+                        if (r < 0)
+                                return r;
+                } else {
+                        /* replace \n with = */
+                        line[n-1] = '=';
+
+                        source->field_len = n;
+                        source->state = STATE_DATA_START;
+
+                        /* we cannot put the field in iovec until we have all data */
+                }
+
+                log_trace("Received: %.*s (%s)", (int) n, line, sep ? "text" : "binary");
+
+                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;
+                char *field;
+
+                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);
+
+                field = (char*) data - sizeof(uint64_t) - source->field_len;
+                memmove(field + sizeof(uint64_t), field, source->field_len);
+
+                r = iovw_put(&source->iovw, field + sizeof(uint64_t), source->field_len + source->data_size);
+                if (r < 0)
+                        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, bool compress, bool seal) {
+        size_t remain, target;
+        int r;
+
+        assert(source);
+        assert(source->writer);
+
+        r = process_data(source);
+        if (r <= 0)
+                return r;
+
+        /* We have a full event */
+        log_trace("Received 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(source->writer, &source->iovw, &source->ts, compress, seal);
+        if (r < 0)
+                log_error_errno(r, "Failed to write entry of %zu bytes: %m",
+                                iovw_size(&source->iovw));
+        else
+                r = 1;
+
+ freeing:
+        iovw_free_contents(&source->iovw);
+
+        /* possibly reset buffer position */
+        remain = source->filled - source->offset;
+
+        if (remain == 0) /* no brainer */
+                source->offset = source->scanned = source->filled = 0;
+        else if (source->offset > source->size - source->filled &&
+                 source->offset > remain) {
+                memcpy(source->buf, source->buf + source->offset, remain);
+                source->offset = source->scanned = 0;
+                source->filled = remain;
+        }
+
+        target = source->size;
+        while (target > 16 * LINE_CHUNK && source->filled < target / 2)
+                target /= 2;
+        if (target < source->size) {
+                char *tmp;
+
+                tmp = realloc(source->buf, target);
+                if (!tmp)
+                        log_warning("Failed to reallocate buffer to (smaller) size %zu",
+                                    target);
+                else {
+                        log_debug("Reallocated buffer from %zu to %zu bytes",
+                                  source->size, target);
+                        source->buf = tmp;
+                        source->size = target;
+                }
+        }
+
+        return r;
+}
diff --git a/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-parse.h b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-parse.h
new file mode 100644
index 0000000000..4f47ea89d6
--- /dev/null
+++ b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-parse.h
@@ -0,0 +1,69 @@
+#pragma once
+
+/***
+  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 <systemd/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;
+        bool passive_fd;
+
+        char *buf;
+        size_t size;       /* total size of the buffer */
+        size_t offset;     /* offset to the beginning of live data in the buffer */
+        size_t scanned;    /* number of bytes since the beginning of data without a newline */
+        size_t filled;     /* total number of bytes in the buffer */
+
+        size_t field_len;  /* used for binary fields: the field name length */
+        size_t data_size;  /* and the size of the binary data chunk being processed */
+
+        struct iovec_wrapper iovw;
+
+        source_state state;
+        dual_timestamp ts;
+
+        Writer *writer;
+
+        sd_event_source *event;
+        sd_event_source *buffer_event;
+} RemoteSource;
+
+RemoteSource* source_new(int fd, bool passive_fd, char *name, Writer *writer);
+
+static inline size_t source_non_empty(RemoteSource *source) {
+        assert(source);
+
+        return source->filled;
+}
+
+void source_free(RemoteSource *source);
+int push_data(RemoteSource *source, const char *data, size_t size);
+int process_source(RemoteSource *source, bool compress, bool seal);
diff --git a/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-write.c b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-write.c
new file mode 100644
index 0000000000..82292fd240
--- /dev/null
+++ b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-write.c
@@ -0,0 +1,168 @@
+/***
+  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 "basic/alloc-util.h"
+#include "journal-remote.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) {
+        iovw->iovec = mfree(iovw->iovec);
+        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;
+}
+
+void iovw_rebase(struct iovec_wrapper *iovw, char *old, char *new) {
+        size_t i;
+
+        for (i = 0; i < iovw->count; i++)
+                iovw->iovec[i].iov_base = (char*) iovw->iovec[i].iov_base - old + new;
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int do_rotate(JournalFile **f, bool compress, bool seal) {
+        int r = journal_file_rotate(f, compress, seal, NULL);
+        if (r < 0) {
+                if (*f)
+                        log_error_errno(r, "Failed to rotate %s: %m", (*f)->path);
+                else
+                        log_error_errno(r, "Failed to create rotated journal: %m");
+        }
+
+        return r;
+}
+
+Writer* writer_new(RemoteServer *server) {
+        Writer *w;
+
+        w = new0(Writer, 1);
+        if (!w)
+                return NULL;
+
+        memset(&w->metrics, 0xFF, sizeof(w->metrics));
+
+        w->mmap = mmap_cache_new();
+        if (!w->mmap) {
+                free(w);
+                return NULL;
+        }
+
+        w->n_ref = 1;
+        w->server = server;
+
+        return w;
+}
+
+Writer* writer_free(Writer *w) {
+        if (!w)
+                return NULL;
+
+        if (w->journal) {
+                log_debug("Closing journal file %s.", w->journal->path);
+                journal_file_close(w->journal);
+        }
+
+        if (w->server && w->hashmap_key)
+                hashmap_remove(w->server->writers, w->hashmap_key);
+
+        free(w->hashmap_key);
+
+        if (w->mmap)
+                mmap_cache_unref(w->mmap);
+
+        free(w);
+
+        return NULL;
+}
+
+Writer* writer_unref(Writer *w) {
+        if (w && (-- w->n_ref <= 0))
+                writer_free(w);
+
+        return NULL;
+}
+
+Writer* writer_ref(Writer *w) {
+        if (w)
+                assert_se(++ w->n_ref >= 2);
+
+        return w;
+}
+
+int writer_write(Writer *w,
+                 struct iovec_wrapper *iovw,
+                 dual_timestamp *ts,
+                 bool compress,
+                 bool seal) {
+        int r;
+
+        assert(w);
+        assert(iovw);
+        assert(iovw->count > 0);
+
+        if (journal_file_rotate_suggested(w->journal, 0)) {
+                log_info("%s: Journal header limits reached or header out-of-date, rotating",
+                         w->journal->path);
+                r = do_rotate(&w->journal, compress, seal);
+                if (r < 0)
+                        return r;
+        }
+
+        r = journal_file_append_entry(w->journal, ts, iovw->iovec, iovw->count,
+                                      &w->seqnum, NULL, NULL);
+        if (r >= 0) {
+                if (w->server)
+                        w->server->event_count += 1;
+                return 1;
+        }
+
+        log_debug_errno(r, "%s: Write failed, rotating: %m", w->journal->path);
+        r = do_rotate(&w->journal, compress, seal);
+        if (r < 0)
+                return r;
+        else
+                log_debug("%s: Successfully rotated journal", w->journal->path);
+
+        log_debug("Retrying write.");
+        r = journal_file_append_entry(w->journal, ts, iovw->iovec, iovw->count,
+                                      &w->seqnum, NULL, NULL);
+        if (r < 0)
+                return r;
+
+        if (w->server)
+                w->server->event_count += 1;
+        return 1;
+}
diff --git a/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-write.h b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-write.h
new file mode 100644
index 0000000000..53ba45fc04
--- /dev/null
+++ b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote-write.h
@@ -0,0 +1,70 @@
+#pragma once
+
+/***
+  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-file.h"
+
+typedef struct RemoteServer RemoteServer;
+
+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);
+void iovw_rebase(struct iovec_wrapper *iovw, char *old, char *new);
+
+typedef struct Writer {
+        JournalFile *journal;
+        JournalMetrics metrics;
+
+        MMapCache *mmap;
+        RemoteServer *server;
+        char *hashmap_key;
+
+        uint64_t seqnum;
+
+        int n_ref;
+} Writer;
+
+Writer* writer_new(RemoteServer* server);
+Writer* writer_free(Writer *w);
+
+Writer* writer_ref(Writer *w);
+Writer* writer_unref(Writer *w);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Writer*, writer_unref);
+#define _cleanup_writer_unref_ _cleanup_(writer_unrefp)
+
+int writer_write(Writer *s,
+                 struct iovec_wrapper *iovw,
+                 dual_timestamp *ts,
+                 bool compress,
+                 bool seal);
+
+typedef enum JournalWriteSplitMode {
+        JOURNAL_WRITE_SPLIT_NONE,
+        JOURNAL_WRITE_SPLIT_HOST,
+        _JOURNAL_WRITE_SPLIT_MAX,
+        _JOURNAL_WRITE_SPLIT_INVALID = -1
+} JournalWriteSplitMode;
diff --git a/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.c b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.c
new file mode 100644
index 0000000000..6ea7adabb0
--- /dev/null
+++ b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.c
@@ -0,0 +1,1601 @@
+/***
+  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 <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/prctl.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#ifdef HAVE_GNUTLS
+#include <gnutls/gnutls.h>
+#endif
+
+#include <systemd/sd-daemon.h>
+
+#include "basic/alloc-util.h"
+#include "shared/conf-parser.h"
+#include "basic/def.h"
+#include "basic/escape.h"
+#include "basic/fd-util.h"
+#include "basic/fileio.h"
+#include "journal-file.h"
+#include "journal-remote-write.h"
+#include "journal-remote.h"
+#include "journald-native.h"
+#include "basic/macro.h"
+#include "basic/parse-util.h"
+#include "basic/signal-util.h"
+#include "basic/socket-util.h"
+#include "basic/stat-util.h"
+#include "basic/stdio-util.h"
+#include "basic/string-table.h"
+#include "basic/string-util.h"
+#include "basic/strv.h"
+
+#define REMOTE_JOURNAL_PATH "/var/log/journal/remote"
+
+#define PRIV_KEY_FILE CERTIFICATE_ROOT "/private/journal-remote.pem"
+#define CERT_FILE     CERTIFICATE_ROOT "/certs/journal-remote.pem"
+#define TRUST_FILE    CERTIFICATE_ROOT "/ca/trusted.pem"
+
+static char* arg_url = NULL;
+static char* arg_getter = NULL;
+static char* arg_listen_raw = NULL;
+static char* arg_listen_http = NULL;
+static char* arg_listen_https = NULL;
+static char** arg_files = NULL;
+static int arg_compress = true;
+static int arg_seal = false;
+static int http_socket = -1, https_socket = -1;
+static char** arg_gnutls_log = NULL;
+
+static JournalWriteSplitMode arg_split_mode = JOURNAL_WRITE_SPLIT_HOST;
+static char* arg_output = NULL;
+
+static char *arg_key = NULL;
+static char *arg_cert = NULL;
+static char *arg_trust = NULL;
+static bool arg_trust_all = 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)
+                return log_error_errno(errno, "Failed to create pager pipe: %m");
+
+        parent_pid = getpid();
+
+        child_pid = fork();
+        if (child_pid < 0) {
+                r = log_error_errno(errno, "Failed to fork: %m");
+                safe_close_pair(fd);
+                return r;
+        }
+
+        /* In the child */
+        if (child_pid == 0) {
+
+                (void) reset_all_signal_handlers();
+                (void) reset_signal_mask();
+
+                r = dup2(fd[1], STDOUT_FILENO);
+                if (r < 0) {
+                        log_error_errno(errno, "Failed to dup pipe to stdout: %m");
+                        _exit(EXIT_FAILURE);
+                }
+
+                safe_close_pair(fd);
+
+                /* 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_errno(errno, "Failed to exec child %s: %m", child);
+                _exit(EXIT_FAILURE);
+        }
+
+        r = close(fd[1]);
+        if (r < 0)
+                log_warning_errno(errno, "Failed to close write end of pipe: %m");
+
+        return fd[0];
+}
+
+static int spawn_curl(const 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_errno(r, "Failed to spawn curl: %m");
+        return r;
+}
+
+static int spawn_getter(const char *getter) {
+        int r;
+        _cleanup_strv_free_ char **words = NULL;
+
+        assert(getter);
+        r = strv_split_extract(&words, getter, WHITESPACE, EXTRACT_QUOTES);
+        if (r < 0)
+                return log_error_errno(r, "Failed to split getter option: %m");
+
+        r = spawn_child(words[0], words);
+        if (r < 0)
+                log_error_errno(r, "Failed to spawn getter %s: %m", getter);
+
+        return r;
+}
+
+#define filename_escape(s) xescape((s), "/ ")
+
+static int open_output(Writer *w, const char* host) {
+        _cleanup_free_ char *_output = NULL;
+        const char *output;
+        int r;
+
+        switch (arg_split_mode) {
+        case JOURNAL_WRITE_SPLIT_NONE:
+                output = arg_output ?: REMOTE_JOURNAL_PATH "/remote.journal";
+                break;
+
+        case JOURNAL_WRITE_SPLIT_HOST: {
+                _cleanup_free_ char *name;
+
+                assert(host);
+
+                name = filename_escape(host);
+                if (!name)
+                        return log_oom();
+
+                r = asprintf(&_output, "%s/remote-%s.journal",
+                             arg_output ?: REMOTE_JOURNAL_PATH,
+                             name);
+                if (r < 0)
+                        return log_oom();
+
+                output = _output;
+                break;
+        }
+
+        default:
+                assert_not_reached("what?");
+        }
+
+        r = journal_file_open_reliably(output,
+                                       O_RDWR|O_CREAT, 0640,
+                                       arg_compress, arg_seal,
+                                       &w->metrics,
+                                       w->mmap, NULL,
+                                       NULL, &w->journal);
+        if (r < 0)
+                log_error_errno(r, "Failed to open output journal %s: %m",
+                                output);
+        else
+                log_debug("Opened output file %s", w->journal->path);
+        return r;
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int init_writer_hashmap(RemoteServer *s) {
+        static const struct hash_ops *hash_ops[] = {
+                [JOURNAL_WRITE_SPLIT_NONE] = NULL,
+                [JOURNAL_WRITE_SPLIT_HOST] = &string_hash_ops,
+        };
+
+        assert(arg_split_mode >= 0 && arg_split_mode < (int) ELEMENTSOF(hash_ops));
+
+        s->writers = hashmap_new(hash_ops[arg_split_mode]);
+        if (!s->writers)
+                return log_oom();
+
+        return 0;
+}
+
+static int get_writer(RemoteServer *s, const char *host,
+                      Writer **writer) {
+        const void *key;
+        _cleanup_writer_unref_ Writer *w = NULL;
+        int r;
+
+        switch(arg_split_mode) {
+        case JOURNAL_WRITE_SPLIT_NONE:
+                key = "one and only";
+                break;
+
+        case JOURNAL_WRITE_SPLIT_HOST:
+                assert(host);
+                key = host;
+                break;
+
+        default:
+                assert_not_reached("what split mode?");
+        }
+
+        w = hashmap_get(s->writers, key);
+        if (w)
+                writer_ref(w);
+        else {
+                w = writer_new(s);
+                if (!w)
+                        return log_oom();
+
+                if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST) {
+                        w->hashmap_key = strdup(key);
+                        if (!w->hashmap_key)
+                                return log_oom();
+                }
+
+                r = open_output(w, host);
+                if (r < 0)
+                        return r;
+
+                r = hashmap_put(s->writers, w->hashmap_key ?: key, w);
+                if (r < 0)
+                        return r;
+        }
+
+        *writer = w;
+        w = NULL;
+        return 0;
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+/* This should go away as soon as µhttpd allows state to be passed around. */
+static RemoteServer *server;
+
+static int dispatch_raw_source_event(sd_event_source *event,
+                                     int fd,
+                                     uint32_t revents,
+                                     void *userdata);
+static int dispatch_raw_source_until_block(sd_event_source *event,
+                                           void *userdata);
+static int dispatch_blocking_source_event(sd_event_source *event,
+                                          void *userdata);
+static int dispatch_raw_connection_event(sd_event_source *event,
+                                         int fd,
+                                         uint32_t revents,
+                                         void *userdata);
+static int dispatch_http_event(sd_event_source *event,
+                               int fd,
+                               uint32_t revents,
+                               void *userdata);
+
+static int get_source_for_fd(RemoteServer *s,
+                             int fd, char *name, RemoteSource **source) {
+        Writer *writer;
+        int r;
+
+        /* This takes ownership of name, but only on success. */
+
+        assert(fd >= 0);
+        assert(source);
+
+        if (!GREEDY_REALLOC0(s->sources, s->sources_size, fd + 1))
+                return log_oom();
+
+        r = get_writer(s, name, &writer);
+        if (r < 0)
+                return log_warning_errno(r, "Failed to get writer for source %s: %m",
+                                         name);
+
+        if (s->sources[fd] == NULL) {
+                s->sources[fd] = source_new(fd, false, name, writer);
+                if (!s->sources[fd]) {
+                        writer_unref(writer);
+                        return log_oom();
+                }
+
+                s->active++;
+        }
+
+        *source = s->sources[fd];
+        return 0;
+}
+
+static int remove_source(RemoteServer *s, int fd) {
+        RemoteSource *source;
+
+        assert(s);
+        assert(fd >= 0 && fd < (ssize_t) s->sources_size);
+
+        source = s->sources[fd];
+        if (source) {
+                /* this closes fd too */
+                source_free(source);
+                s->sources[fd] = NULL;
+                s->active--;
+        }
+
+        return 0;
+}
+
+static int add_source(RemoteServer *s, int fd, char* name, bool own_name) {
+
+        RemoteSource *source = NULL;
+        int r;
+
+        /* This takes ownership of name, even on failure, if own_name is true. */
+
+        assert(s);
+        assert(fd >= 0);
+        assert(name);
+
+        if (!own_name) {
+                name = strdup(name);
+                if (!name)
+                        return log_oom();
+        }
+
+        r = get_source_for_fd(s, fd, name, &source);
+        if (r < 0) {
+                log_error_errno(r, "Failed to create source for fd:%d (%s): %m",
+                                fd, name);
+                free(name);
+                return r;
+        }
+
+        r = sd_event_add_io(s->events, &source->event,
+                            fd, EPOLLIN|EPOLLRDHUP|EPOLLPRI,
+                            dispatch_raw_source_event, source);
+        if (r == 0) {
+                /* Add additional source for buffer processing. It will be
+                 * enabled later. */
+                r = sd_event_add_defer(s->events, &source->buffer_event,
+                                       dispatch_raw_source_until_block, source);
+                if (r == 0)
+                        sd_event_source_set_enabled(source->buffer_event, SD_EVENT_OFF);
+        } else if (r == -EPERM) {
+                log_debug("Falling back to sd_event_add_defer for fd:%d (%s)", fd, name);
+                r = sd_event_add_defer(s->events, &source->event,
+                                       dispatch_blocking_source_event, source);
+                if (r == 0)
+                        sd_event_source_set_enabled(source->event, SD_EVENT_ON);
+        }
+        if (r < 0) {
+                log_error_errno(r, "Failed to register event source for fd:%d: %m",
+                                fd);
+                goto error;
+        }
+
+        r = sd_event_source_set_description(source->event, name);
+        if (r < 0) {
+                log_error_errno(r, "Failed to set source name for fd:%d: %m", fd);
+                goto error;
+        }
+
+        return 1; /* work to do */
+
+ error:
+        remove_source(s, fd);
+        return r;
+}
+
+static int add_raw_socket(RemoteServer *s, int fd) {
+        int r;
+        _cleanup_close_ int fd_ = fd;
+        char name[sizeof("raw-socket-")-1 + DECIMAL_STR_MAX(int) + 1];
+
+        assert(fd >= 0);
+
+        r = sd_event_add_io(s->events, &s->listen_event,
+                            fd, EPOLLIN,
+                            dispatch_raw_connection_event, s);
+        if (r < 0)
+                return r;
+
+        xsprintf(name, "raw-socket-%d", fd);
+
+        r = sd_event_source_set_description(s->listen_event, name);
+        if (r < 0)
+                return r;
+
+        fd_ = -1;
+        s->active++;
+        return 0;
+}
+
+static int setup_raw_socket(RemoteServer *s, const char *address) {
+        int fd;
+
+        fd = make_socket_fd(LOG_INFO, address, SOCK_STREAM, SOCK_CLOEXEC);
+        if (fd < 0)
+                return fd;
+
+        return add_raw_socket(s, fd);
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int request_meta(void **connection_cls, int fd, char *hostname) {
+        RemoteSource *source;
+        Writer *writer;
+        int r;
+
+        assert(connection_cls);
+        if (*connection_cls)
+                return 0;
+
+        r = get_writer(server, hostname, &writer);
+        if (r < 0)
+                return log_warning_errno(r, "Failed to get writer for source %s: %m",
+                                         hostname);
+
+        source = source_new(fd, true, hostname, writer);
+        if (!source) {
+                writer_unref(writer);
+                return log_oom();
+        }
+
+        log_debug("Added RemoteSource as connection metadata %p", source);
+
+        *connection_cls = source;
+        return 0;
+}
+
+static void request_meta_free(void *cls,
+                              struct MHD_Connection *connection,
+                              void **connection_cls,
+                              enum MHD_RequestTerminationCode toe) {
+        RemoteSource *s;
+
+        assert(connection_cls);
+        s = *connection_cls;
+
+        if (s) {
+                log_debug("Cleaning up connection metadata %p", s);
+                source_free(s);
+                *connection_cls = NULL;
+        }
+}
+
+static int process_http_upload(
+                struct MHD_Connection *connection,
+                const char *upload_data,
+                size_t *upload_data_size,
+                RemoteSource *source) {
+
+        bool finished = false;
+        size_t remaining;
+        int r;
+
+        assert(source);
+
+        log_trace("%s: connection %p, %zu bytes",
+                  __func__, connection, *upload_data_size);
+
+        if (*upload_data_size) {
+                log_trace("Received %zu bytes", *upload_data_size);
+
+                r = push_data(source, upload_data, *upload_data_size);
+                if (r < 0)
+                        return mhd_respond_oom(connection);
+
+                *upload_data_size = 0;
+        } else
+                finished = true;
+
+        for (;;) {
+                r = process_source(source, arg_compress, arg_seal);
+                if (r == -EAGAIN)
+                        break;
+                else if (r < 0) {
+                        log_warning("Failed to process data for connection %p", connection);
+                        if (r == -E2BIG)
+                                return mhd_respondf(connection,
+                                                    MHD_HTTP_REQUEST_ENTITY_TOO_LARGE,
+                                                    "Entry is too large, maximum is %u bytes.\n",
+                                                    DATA_SIZE_MAX);
+                        else
+                                return mhd_respondf(connection,
+                                                    MHD_HTTP_UNPROCESSABLE_ENTITY,
+                                                    "Processing failed: %s.", strerror(-r));
+                }
+        }
+
+        if (!finished)
+                return MHD_YES;
+
+        /* The upload is finished */
+
+        remaining = source_non_empty(source);
+        if (remaining > 0) {
+                log_warning("Premature EOFbyte. %zu bytes lost.", remaining);
+                return mhd_respondf(connection, MHD_HTTP_EXPECTATION_FAILED,
+                                    "Premature EOF. %zu bytes of trailing data not processed.",
+                                    remaining);
+        }
+
+        return mhd_respond(connection, MHD_HTTP_ACCEPTED, "OK.\n");
+};
+
+static int request_handler(
+                void *cls,
+                struct MHD_Connection *connection,
+                const char *url,
+                const char *method,
+                const char *version,
+                const char *upload_data,
+                size_t *upload_data_size,
+                void **connection_cls) {
+
+        const char *header;
+        int r, code, fd;
+        _cleanup_free_ char *hostname = NULL;
+
+        assert(connection);
+        assert(connection_cls);
+        assert(url);
+        assert(method);
+
+        log_trace("Handling a connection %s %s %s", method, url, version);
+
+        if (*connection_cls)
+                return process_http_upload(connection,
+                                           upload_data, upload_data_size,
+                                           *connection_cls);
+
+        if (!streq(method, "POST"))
+                return mhd_respond(connection, MHD_HTTP_NOT_ACCEPTABLE,
+                                   "Unsupported method.\n");
+
+        if (!streq(url, "/upload"))
+                return mhd_respond(connection, MHD_HTTP_NOT_FOUND,
+                                   "Not found.\n");
+
+        header = MHD_lookup_connection_value(connection,
+                                             MHD_HEADER_KIND, "Content-Type");
+        if (!header || !streq(header, "application/vnd.fdo.journal"))
+                return mhd_respond(connection, MHD_HTTP_UNSUPPORTED_MEDIA_TYPE,
+                                   "Content-Type: application/vnd.fdo.journal"
+                                   " is required.\n");
+
+        {
+                const union MHD_ConnectionInfo *ci;
+
+                ci = MHD_get_connection_info(connection,
+                                             MHD_CONNECTION_INFO_CONNECTION_FD);
+                if (!ci) {
+                        log_error("MHD_get_connection_info failed: cannot get remote fd");
+                        return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                           "Cannot check remote address");
+                }
+
+                fd = ci->connect_fd;
+                assert(fd >= 0);
+        }
+
+        if (server->check_trust) {
+                r = check_permissions(connection, &code, &hostname);
+                if (r < 0)
+                        return code;
+        } else {
+                r = getpeername_pretty(fd, false, &hostname);
+                if (r < 0)
+                        return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                           "Cannot check remote hostname");
+        }
+
+        assert(hostname);
+
+        r = request_meta(connection_cls, fd, hostname);
+        if (r == -ENOMEM)
+                return respond_oom(connection);
+        else if (r < 0)
+                return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                   strerror(-r));
+
+        hostname = NULL;
+        return MHD_YES;
+}
+
+static int setup_microhttpd_server(RemoteServer *s,
+                                   int fd,
+                                   const char *key,
+                                   const char *cert,
+                                   const char *trust) {
+        struct MHD_OptionItem opts[] = {
+                { MHD_OPTION_NOTIFY_COMPLETED, (intptr_t) request_meta_free},
+                { MHD_OPTION_EXTERNAL_LOGGER, (intptr_t) microhttpd_logger},
+                { MHD_OPTION_LISTEN_SOCKET, fd},
+                { MHD_OPTION_CONNECTION_MEMORY_LIMIT, 128*1024},
+                { MHD_OPTION_END},
+                { MHD_OPTION_END},
+                { MHD_OPTION_END},
+                { MHD_OPTION_END}};
+        int opts_pos = 4;
+        int flags =
+                MHD_USE_DEBUG |
+                MHD_USE_DUAL_STACK |
+                MHD_USE_EPOLL_LINUX_ONLY |
+                MHD_USE_PEDANTIC_CHECKS |
+                MHD_USE_PIPE_FOR_SHUTDOWN;
+
+        const union MHD_DaemonInfo *info;
+        int r, epoll_fd;
+        MHDDaemonWrapper *d;
+
+        assert(fd >= 0);
+
+        r = fd_nonblock(fd, true);
+        if (r < 0)
+                return log_error_errno(r, "Failed to make fd:%d nonblocking: %m", fd);
+
+        if (key) {
+                assert(cert);
+
+                opts[opts_pos++] = (struct MHD_OptionItem)
+                        {MHD_OPTION_HTTPS_MEM_KEY, 0, (char*) key};
+                opts[opts_pos++] = (struct MHD_OptionItem)
+                        {MHD_OPTION_HTTPS_MEM_CERT, 0, (char*) cert};
+
+                flags |= MHD_USE_SSL;
+
+                if (trust)
+                        opts[opts_pos++] = (struct MHD_OptionItem)
+                                {MHD_OPTION_HTTPS_MEM_TRUST, 0, (char*) trust};
+        }
+
+        d = new(MHDDaemonWrapper, 1);
+        if (!d)
+                return log_oom();
+
+        d->fd = (uint64_t) fd;
+
+        d->daemon = MHD_start_daemon(flags, 0,
+                                     NULL, NULL,
+                                     request_handler, NULL,
+                                     MHD_OPTION_ARRAY, opts,
+                                     MHD_OPTION_END);
+        if (!d->daemon) {
+                log_error("Failed to start µhttp daemon");
+                r = -EINVAL;
+                goto error;
+        }
+
+        log_debug("Started MHD %s daemon on fd:%d (wrapper @ %p)",
+                  key ? "HTTPS" : "HTTP", fd, d);
+
+
+        info = MHD_get_daemon_info(d->daemon, MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY);
+        if (!info) {
+                log_error("µhttp returned NULL daemon info");
+                r = -EOPNOTSUPP;
+                goto error;
+        }
+
+        epoll_fd = info->listen_fd;
+        if (epoll_fd < 0) {
+                log_error("µhttp epoll fd is invalid");
+                r = -EUCLEAN;
+                goto error;
+        }
+
+        r = sd_event_add_io(s->events, &d->event,
+                            epoll_fd, EPOLLIN,
+                            dispatch_http_event, d);
+        if (r < 0) {
+                log_error_errno(r, "Failed to add event callback: %m");
+                goto error;
+        }
+
+        r = sd_event_source_set_description(d->event, "epoll-fd");
+        if (r < 0) {
+                log_error_errno(r, "Failed to set source name: %m");
+                goto error;
+        }
+
+        r = hashmap_ensure_allocated(&s->daemons, &uint64_hash_ops);
+        if (r < 0) {
+                log_oom();
+                goto error;
+        }
+
+        r = hashmap_put(s->daemons, &d->fd, d);
+        if (r < 0) {
+                log_error_errno(r, "Failed to add daemon to hashmap: %m");
+                goto error;
+        }
+
+        s->active++;
+        return 0;
+
+error:
+        MHD_stop_daemon(d->daemon);
+        free(d->daemon);
+        free(d);
+        return r;
+}
+
+static int setup_microhttpd_socket(RemoteServer *s,
+                                   const char *address,
+                                   const char *key,
+                                   const char *cert,
+                                   const char *trust) {
+        int fd;
+
+        fd = make_socket_fd(LOG_DEBUG, address, SOCK_STREAM, SOCK_CLOEXEC);
+        if (fd < 0)
+                return fd;
+
+        return setup_microhttpd_server(s, fd, key, cert, trust);
+}
+
+static int dispatch_http_event(sd_event_source *event,
+                               int fd,
+                               uint32_t revents,
+                               void *userdata) {
+        MHDDaemonWrapper *d = userdata;
+        int r;
+
+        assert(d);
+
+        r = MHD_run(d->daemon);
+        if (r == MHD_NO) {
+                log_error("MHD_run failed!");
+                // XXX: unregister daemon
+                return -EINVAL;
+        }
+
+        return 1; /* work to do */
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int setup_signals(RemoteServer *s) {
+        int r;
+
+        assert(s);
+
+        assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, -1) >= 0);
+
+        r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, NULL, s);
+        if (r < 0)
+                return r;
+
+        r = sd_event_add_signal(s->events, &s->sigint_event, SIGINT, NULL, s);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+static int negative_fd(const char *spec) {
+        /* Return a non-positive number as its inverse, -EINVAL otherwise. */
+
+        int fd, r;
+
+        r = safe_atoi(spec, &fd);
+        if (r < 0)
+                return r;
+
+        if (fd > 0)
+                return -EINVAL;
+        else
+                return -fd;
+}
+
+static int remoteserver_init(RemoteServer *s,
+                             const char* key,
+                             const char* cert,
+                             const char* trust) {
+        int r, n, fd;
+        char **file;
+
+        assert(s);
+
+        if ((arg_listen_raw || arg_listen_http) && trust) {
+                log_error("Option --trust makes all non-HTTPS connections untrusted.");
+                return -EINVAL;
+        }
+
+        r = sd_event_default(&s->events);
+        if (r < 0)
+                return log_error_errno(r, "Failed to allocate event loop: %m");
+
+        setup_signals(s);
+
+        assert(server == NULL);
+        server = s;
+
+        r = init_writer_hashmap(s);
+        if (r < 0)
+                return r;
+
+        n = sd_listen_fds(true);
+        if (n < 0)
+                return log_error_errno(n, "Failed to read listening file descriptors from environment: %m");
+        else
+                log_debug("Received %d descriptors", n);
+
+        if (MAX(http_socket, https_socket) >= SD_LISTEN_FDS_START + n) {
+                log_error("Received fewer sockets than expected");
+                return -EBADFD;
+        }
+
+        for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
+                if (sd_is_socket(fd, AF_UNSPEC, 0, true)) {
+                        log_debug("Received a listening socket (fd:%d)", fd);
+
+                        if (fd == http_socket)
+                                r = setup_microhttpd_server(s, fd, NULL, NULL, NULL);
+                        else if (fd == https_socket)
+                                r = setup_microhttpd_server(s, fd, key, cert, trust);
+                        else
+                                r = add_raw_socket(s, fd);
+                } else if (sd_is_socket(fd, AF_UNSPEC, 0, false)) {
+                        char *hostname;
+
+                        r = getpeername_pretty(fd, false, &hostname);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to retrieve remote name: %m");
+
+                        log_debug("Received a connection socket (fd:%d) from %s", fd, hostname);
+
+                        r = add_source(s, fd, hostname, true);
+                } else {
+                        log_error("Unknown socket passed on fd:%d", fd);
+
+                        return -EINVAL;
+                }
+
+                if (r < 0)
+                        return log_error_errno(r, "Failed to register socket (fd:%d): %m",
+                                               fd);
+        }
+
+        if (arg_getter) {
+                log_info("Spawning getter %s...", arg_getter);
+                fd = spawn_getter(arg_getter);
+                if (fd < 0)
+                        return fd;
+
+                r = add_source(s, fd, (char*) arg_output, false);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_url) {
+                const char *url;
+                char *hostname, *p;
+
+                if (!strstr(arg_url, "/entries")) {
+                        if (endswith(arg_url, "/"))
+                                url = strjoina(arg_url, "entries");
+                        else
+                                url = strjoina(arg_url, "/entries");
+                }
+                else
+                        url = strdupa(arg_url);
+
+                log_info("Spawning curl %s...", url);
+                fd = spawn_curl(url);
+                if (fd < 0)
+                        return fd;
+
+                hostname =
+                        startswith(arg_url, "https://") ?:
+                        startswith(arg_url, "http://") ?:
+                        arg_url;
+
+                hostname = strdupa(hostname);
+                if ((p = strchr(hostname, '/')))
+                        *p = '\0';
+                if ((p = strchr(hostname, ':')))
+                        *p = '\0';
+
+                r = add_source(s, fd, hostname, false);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_listen_raw) {
+                log_debug("Listening on a socket...");
+                r = setup_raw_socket(s, arg_listen_raw);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_listen_http) {
+                r = setup_microhttpd_socket(s, arg_listen_http, NULL, NULL, NULL);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_listen_https) {
+                r = setup_microhttpd_socket(s, arg_listen_https, key, cert, trust);
+                if (r < 0)
+                        return r;
+        }
+
+        STRV_FOREACH(file, arg_files) {
+                const char *output_name;
+
+                if (streq(*file, "-")) {
+                        log_debug("Using standard input as source.");
+
+                        fd = STDIN_FILENO;
+                        output_name = "stdin";
+                } else {
+                        log_debug("Reading file %s...", *file);
+
+                        fd = open(*file, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
+                        if (fd < 0)
+                                return log_error_errno(errno, "Failed to open %s: %m", *file);
+                        output_name = *file;
+                }
+
+                r = add_source(s, fd, (char*) output_name, false);
+                if (r < 0)
+                        return r;
+        }
+
+        if (s->active == 0) {
+                log_error("Zero sources specified");
+                return -EINVAL;
+        }
+
+        if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE) {
+                /* In this case we know what the writer will be
+                   called, so we can create it and verify that we can
+                   create output as expected. */
+                r = get_writer(s, NULL, &s->_single_writer);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static void server_destroy(RemoteServer *s) {
+        size_t i;
+        MHDDaemonWrapper *d;
+
+        while ((d = hashmap_steal_first(s->daemons))) {
+                MHD_stop_daemon(d->daemon);
+                sd_event_source_unref(d->event);
+                free(d);
+        }
+
+        hashmap_free(s->daemons);
+
+        assert(s->sources_size == 0 || s->sources);
+        for (i = 0; i < s->sources_size; i++)
+                remove_source(s, i);
+        free(s->sources);
+
+        writer_unref(s->_single_writer);
+        hashmap_free(s->writers);
+
+        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... */
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int handle_raw_source(sd_event_source *event,
+                             int fd,
+                             uint32_t revents,
+                             RemoteServer *s) {
+
+        RemoteSource *source;
+        int r;
+
+        /* Returns 1 if there might be more data pending,
+         * 0 if data is currently exhausted, negative on error.
+         */
+
+        assert(fd >= 0 && fd < (ssize_t) s->sources_size);
+        source = s->sources[fd];
+        assert(source->fd == fd);
+
+        r = process_source(source, arg_compress, arg_seal);
+        if (source->state == STATE_EOF) {
+                size_t remaining;
+
+                log_debug("EOF reached with source fd:%d (%s)",
+                          source->fd, source->name);
+
+                remaining = source_non_empty(source);
+                if (remaining > 0)
+                        log_notice("Premature EOF. %zu bytes lost.", remaining);
+                remove_source(s, source->fd);
+                log_debug("%zu active sources remaining", s->active);
+                return 0;
+        } else if (r == -E2BIG) {
+                log_notice_errno(E2BIG, "Entry too big, skipped");
+                return 1;
+        } else if (r == -EAGAIN) {
+                return 0;
+        } else if (r < 0) {
+                log_debug_errno(r, "Closing connection: %m");
+                remove_source(server, fd);
+                return 0;
+        } else
+                return 1;
+}
+
+static int dispatch_raw_source_until_block(sd_event_source *event,
+                                           void *userdata) {
+        RemoteSource *source = userdata;
+        int r;
+
+        /* Make sure event stays around even if source is destroyed */
+        sd_event_source_ref(event);
+
+        r = handle_raw_source(event, source->fd, EPOLLIN, server);
+        if (r != 1)
+                /* No more data for now */
+                sd_event_source_set_enabled(event, SD_EVENT_OFF);
+
+        sd_event_source_unref(event);
+
+        return r;
+}
+
+static int dispatch_raw_source_event(sd_event_source *event,
+                                     int fd,
+                                     uint32_t revents,
+                                     void *userdata) {
+        RemoteSource *source = userdata;
+        int r;
+
+        assert(source->event);
+        assert(source->buffer_event);
+
+        r = handle_raw_source(event, fd, EPOLLIN, server);
+        if (r == 1)
+                /* Might have more data. We need to rerun the handler
+                 * until we are sure the buffer is exhausted. */
+                sd_event_source_set_enabled(source->buffer_event, SD_EVENT_ON);
+
+        return r;
+}
+
+static int dispatch_blocking_source_event(sd_event_source *event,
+                                          void *userdata) {
+        RemoteSource *source = userdata;
+
+        return handle_raw_source(event, source->fd, EPOLLIN, server);
+}
+
+static int accept_connection(const char* type, int fd,
+                             SocketAddress *addr, char **hostname) {
+        int fd2, r;
+
+        log_debug("Accepting new %s connection on fd:%d", type, fd);
+        fd2 = accept4(fd, &addr->sockaddr.sa, &addr->size, SOCK_NONBLOCK|SOCK_CLOEXEC);
+        if (fd2 < 0)
+                return log_error_errno(errno, "accept() on fd:%d failed: %m", fd);
+
+        switch(socket_address_family(addr)) {
+        case AF_INET:
+        case AF_INET6: {
+                _cleanup_free_ char *a = NULL;
+                char *b;
+
+                r = socket_address_print(addr, &a);
+                if (r < 0) {
+                        log_error_errno(r, "socket_address_print(): %m");
+                        close(fd2);
+                        return r;
+                }
+
+                r = socknameinfo_pretty(&addr->sockaddr, addr->size, &b);
+                if (r < 0) {
+                        log_error_errno(r, "Resolving hostname failed: %m");
+                        close(fd2);
+                        return r;
+                }
+
+                log_debug("Accepted %s %s connection from %s",
+                          type,
+                          socket_address_family(addr) == AF_INET ? "IP" : "IPv6",
+                          a);
+
+                *hostname = b;
+
+                return fd2;
+        };
+        default:
+                log_error("Rejected %s connection with unsupported family %d",
+                          type, socket_address_family(addr));
+                close(fd2);
+
+                return -EINVAL;
+        }
+}
+
+static int dispatch_raw_connection_event(sd_event_source *event,
+                                         int fd,
+                                         uint32_t revents,
+                                         void *userdata) {
+        RemoteServer *s = userdata;
+        int fd2;
+        SocketAddress addr = {
+                .size = sizeof(union sockaddr_union),
+                .type = SOCK_STREAM,
+        };
+        char *hostname = NULL;
+
+        fd2 = accept_connection("raw", fd, &addr, &hostname);
+        if (fd2 < 0)
+                return fd2;
+
+        return add_source(s, fd2, hostname, true);
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static const char* const journal_write_split_mode_table[_JOURNAL_WRITE_SPLIT_MAX] = {
+        [JOURNAL_WRITE_SPLIT_NONE] = "none",
+        [JOURNAL_WRITE_SPLIT_HOST] = "host",
+};
+
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP(journal_write_split_mode, JournalWriteSplitMode);
+static DEFINE_CONFIG_PARSE_ENUM(config_parse_write_split_mode,
+                                journal_write_split_mode,
+                                JournalWriteSplitMode,
+                                "Failed to parse split mode setting");
+
+static int parse_config(void) {
+        const ConfigTableItem items[] = {
+                { "Remote",  "Seal",                   config_parse_bool,             0, &arg_seal       },
+                { "Remote",  "SplitMode",              config_parse_write_split_mode, 0, &arg_split_mode },
+                { "Remote",  "ServerKeyFile",          config_parse_path,             0, &arg_key        },
+                { "Remote",  "ServerCertificateFile",  config_parse_path,             0, &arg_cert       },
+                { "Remote",  "TrustedCertificateFile", config_parse_path,             0, &arg_trust      },
+                {}};
+
+        return config_parse_many(PKGSYSCONFDIR "/journal-remote.conf",
+                                 CONF_PATHS_NULSTR("systemd/journal-remote.conf.d"),
+                                 "Remote\0", config_item_table_lookup, items,
+                                 false, NULL);
+}
+
+static void help(void) {
+        printf("%s [OPTIONS...] {FILE|-}...\n\n"
+               "Write external journal events to journal file(s).\n\n"
+               "  -h --help                 Show this help\n"
+               "     --version              Show package version\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"
+               "     --listen-http=ADDR     Listen for HTTP connections at ADDR\n"
+               "     --listen-https=ADDR    Listen for HTTPS connections at ADDR\n"
+               "  -o --output=FILE|DIR      Write output to FILE or DIR/external-*.journal\n"
+               "     --compress[=BOOL]      XZ-compress the output journal (default: yes)\n"
+               "     --seal[=BOOL]          Use event sealing (default: no)\n"
+               "     --key=FILENAME         SSL key in PEM format (default:\n"
+               "                            \"" PRIV_KEY_FILE "\")\n"
+               "     --cert=FILENAME        SSL certificate in PEM format (default:\n"
+               "                            \"" CERT_FILE "\")\n"
+               "     --trust=FILENAME|all   SSL CA certificate or disable checking (default:\n"
+               "                            \"" TRUST_FILE "\")\n"
+               "     --gnutls-log=CATEGORY...\n"
+               "                            Specify a list of gnutls logging categories\n"
+               "     --split-mode=none|host How many output files to create\n"
+               "\n"
+               "Note: file descriptors from sd_listen_fds() will be consumed, too.\n"
+               , program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+        enum {
+                ARG_VERSION = 0x100,
+                ARG_URL,
+                ARG_LISTEN_RAW,
+                ARG_LISTEN_HTTP,
+                ARG_LISTEN_HTTPS,
+                ARG_GETTER,
+                ARG_SPLIT_MODE,
+                ARG_COMPRESS,
+                ARG_SEAL,
+                ARG_KEY,
+                ARG_CERT,
+                ARG_TRUST,
+                ARG_GNUTLS_LOG,
+        };
+
+        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   },
+                { "listen-http",  required_argument, NULL, ARG_LISTEN_HTTP  },
+                { "listen-https", required_argument, NULL, ARG_LISTEN_HTTPS },
+                { "output",       required_argument, NULL, 'o'              },
+                { "split-mode",   required_argument, NULL, ARG_SPLIT_MODE   },
+                { "compress",     optional_argument, NULL, ARG_COMPRESS     },
+                { "seal",         optional_argument, NULL, ARG_SEAL         },
+                { "key",          required_argument, NULL, ARG_KEY          },
+                { "cert",         required_argument, NULL, ARG_CERT         },
+                { "trust",        required_argument, NULL, ARG_TRUST        },
+                { "gnutls-log",   required_argument, NULL, ARG_GNUTLS_LOG   },
+                {}
+        };
+
+        int c, r;
+        bool type_a, type_b;
+
+        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:
+                        return version();
+
+                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_LISTEN_HTTP:
+                        if (arg_listen_http || http_socket >= 0) {
+                                log_error("cannot currently use --listen-http more than once");
+                                return -EINVAL;
+                        }
+
+                        r = negative_fd(optarg);
+                        if (r >= 0)
+                                http_socket = r;
+                        else
+                                arg_listen_http = optarg;
+                        break;
+
+                case ARG_LISTEN_HTTPS:
+                        if (arg_listen_https || https_socket >= 0) {
+                                log_error("cannot currently use --listen-https more than once");
+                                return -EINVAL;
+                        }
+
+                        r = negative_fd(optarg);
+                        if (r >= 0)
+                                https_socket = r;
+                        else
+                                arg_listen_https = optarg;
+
+                        break;
+
+                case ARG_KEY:
+                        if (arg_key) {
+                                log_error("Key file specified twice");
+                                return -EINVAL;
+                        }
+
+                        arg_key = strdup(optarg);
+                        if (!arg_key)
+                                return log_oom();
+
+                        break;
+
+                case ARG_CERT:
+                        if (arg_cert) {
+                                log_error("Certificate file specified twice");
+                                return -EINVAL;
+                        }
+
+                        arg_cert = strdup(optarg);
+                        if (!arg_cert)
+                                return log_oom();
+
+                        break;
+
+                case ARG_TRUST:
+                        if (arg_trust || arg_trust_all) {
+                                log_error("Confusing trusted CA configuration");
+                                return -EINVAL;
+                        }
+
+                        if (streq(optarg, "all"))
+                                arg_trust_all = true;
+                        else {
+#ifdef HAVE_GNUTLS
+                                arg_trust = strdup(optarg);
+                                if (!arg_trust)
+                                        return log_oom();
+#else
+                                log_error("Option --trust is not available.");
+                                return -EINVAL;
+#endif
+                        }
+
+                        break;
+
+                case 'o':
+                        if (arg_output) {
+                                log_error("cannot use --output/-o more than once");
+                                return -EINVAL;
+                        }
+
+                        arg_output = optarg;
+                        break;
+
+                case ARG_SPLIT_MODE:
+                        arg_split_mode = journal_write_split_mode_from_string(optarg);
+                        if (arg_split_mode == _JOURNAL_WRITE_SPLIT_INVALID) {
+                                log_error("Invalid split mode: %s", optarg);
+                                return -EINVAL;
+                        }
+                        break;
+
+                case ARG_COMPRESS:
+                        if (optarg) {
+                                r = parse_boolean(optarg);
+                                if (r < 0) {
+                                        log_error("Failed to parse --compress= parameter.");
+                                        return -EINVAL;
+                                }
+
+                                arg_compress = !!r;
+                        } else
+                                arg_compress = true;
+
+                        break;
+
+                case ARG_SEAL:
+                        if (optarg) {
+                                r = parse_boolean(optarg);
+                                if (r < 0) {
+                                        log_error("Failed to parse --seal= parameter.");
+                                        return -EINVAL;
+                                }
+
+                                arg_seal = !!r;
+                        } else
+                                arg_seal = true;
+
+                        break;
+
+                case ARG_GNUTLS_LOG: {
+#ifdef HAVE_GNUTLS
+                        const char* p = optarg;
+                        for (;;) {
+                                _cleanup_free_ char *word = NULL;
+
+                                r = extract_first_word(&p, &word, ",", 0);
+                                if (r < 0)
+                                        return log_error_errno(r, "Failed to parse --gnutls-log= argument: %m");
+
+                                if (r == 0)
+                                        break;
+
+                                if (strv_push(&arg_gnutls_log, word) < 0)
+                                        return log_oom();
+
+                                word = NULL;
+                        }
+                        break;
+#else
+                        log_error("Option --gnutls-log is not available.");
+                        return -EINVAL;
+#endif
+                }
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached("Unknown option code.");
+                }
+
+        if (optind < argc)
+                arg_files = argv + optind;
+
+        type_a = arg_getter || !strv_isempty(arg_files);
+        type_b = arg_url
+                || arg_listen_raw
+                || arg_listen_http || arg_listen_https
+                || sd_listen_fds(false) > 0;
+        if (type_a && type_b) {
+                log_error("Cannot use file input or --getter with "
+                          "--arg-listen-... or socket activation.");
+                return -EINVAL;
+        }
+        if (type_a) {
+                if (!arg_output) {
+                        log_error("Option --output must be specified with file input or --getter.");
+                        return -EINVAL;
+                }
+
+                arg_split_mode = JOURNAL_WRITE_SPLIT_NONE;
+        }
+
+        if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE
+            && arg_output && is_dir(arg_output, true) > 0) {
+                log_error("For SplitMode=none, output must be a file.");
+                return -EINVAL;
+        }
+
+        if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST
+            && arg_output && is_dir(arg_output, true) <= 0) {
+                log_error("For SplitMode=host, output must be a directory.");
+                return -EINVAL;
+        }
+
+        log_debug("Full config: SplitMode=%s Key=%s Cert=%s Trust=%s",
+                  journal_write_split_mode_to_string(arg_split_mode),
+                  strna(arg_key),
+                  strna(arg_cert),
+                  strna(arg_trust));
+
+        return 1 /* work to do */;
+}
+
+static int load_certificates(char **key, char **cert, char **trust) {
+        int r;
+
+        r = read_full_file(arg_key ?: PRIV_KEY_FILE, key, NULL);
+        if (r < 0)
+                return log_error_errno(r, "Failed to read key from file '%s': %m",
+                                       arg_key ?: PRIV_KEY_FILE);
+
+        r = read_full_file(arg_cert ?: CERT_FILE, cert, NULL);
+        if (r < 0)
+                return log_error_errno(r, "Failed to read certificate from file '%s': %m",
+                                       arg_cert ?: CERT_FILE);
+
+        if (arg_trust_all)
+                log_info("Certificate checking disabled.");
+        else {
+                r = read_full_file(arg_trust ?: TRUST_FILE, trust, NULL);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to read CA certificate file '%s': %m",
+                                               arg_trust ?: TRUST_FILE);
+        }
+
+        return 0;
+}
+
+int main(int argc, char **argv) {
+        RemoteServer s = {};
+        int r;
+        _cleanup_free_ char *key = NULL, *cert = NULL, *trust = NULL;
+
+        log_show_color(true);
+        log_parse_environment();
+
+        r = parse_config();
+        if (r < 0)
+                return EXIT_FAILURE;
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+
+
+        if (arg_listen_http || arg_listen_https) {
+                r = setup_gnutls_logger(arg_gnutls_log);
+                if (r < 0)
+                        return EXIT_FAILURE;
+        }
+
+        if (arg_listen_https || https_socket >= 0)
+                if (load_certificates(&key, &cert, &trust) < 0)
+                        return EXIT_FAILURE;
+
+        if (remoteserver_init(&s, key, cert, trust) < 0)
+                return EXIT_FAILURE;
+
+        r = sd_event_set_watchdog(s.events, true);
+        if (r < 0)
+                log_error_errno(r, "Failed to enable watchdog: %m");
+        else
+                log_debug("Watchdog is %s.", r > 0 ? "enabled" : "disabled");
+
+        log_debug("%s running as pid "PID_FMT,
+                  program_invocation_short_name, 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_errno(r, "Failed to run event loop: %m");
+                        break;
+                }
+        }
+
+        sd_notifyf(false,
+                   "STOPPING=1\n"
+                   "STATUS=Shutting down after writing %" PRIu64 " entries...", s.event_count);
+        log_info("Finishing after writing %" PRIu64 " entries", s.event_count);
+
+        server_destroy(&s);
+
+        free(arg_key);
+        free(arg_cert);
+        free(arg_trust);
+
+        return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}
diff --git a/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.conf.in b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.conf.in
new file mode 100644
index 0000000000..7122d63362
--- /dev/null
+++ b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.conf.in
@@ -0,0 +1,6 @@
+[Remote]
+# Seal=false
+# SplitMode=host
+# ServerKeyFile=@CERTIFICATEROOT@/private/journal-remote.pem
+# ServerCertificateFile=@CERTIFICATEROOT@/certs/journal-remote.pem
+# TrustedCertificateFile=@CERTIFICATEROOT@/ca/trusted.pem
diff --git a/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.h b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.h
new file mode 100644
index 0000000000..2e8d5999b0
--- /dev/null
+++ b/src/grp-journal/grp-remote/systemd-journal-remote/journal-remote.h
@@ -0,0 +1,52 @@
+#pragma once
+
+/***
+  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 <systemd/sd-event.h>
+
+#include "basic/hashmap.h"
+#include "journal-remote-parse.h"
+#include "journal-remote-write.h"
+#include "microhttpd-util.h"
+
+typedef struct MHDDaemonWrapper MHDDaemonWrapper;
+
+struct MHDDaemonWrapper {
+        uint64_t fd;
+        struct MHD_Daemon *daemon;
+
+        sd_event_source *event;
+};
+
+struct RemoteServer {
+        RemoteSource **sources;
+        size_t sources_size;
+        size_t active;
+
+        sd_event *events;
+        sd_event_source *sigterm_event, *sigint_event, *listen_event;
+
+        Hashmap *writers;
+        Writer *_single_writer;
+        uint64_t event_count;
+
+        bool check_trust;
+        Hashmap *daemons;
+};