Move network-related journal programs to src/journal-remote/

Directory src/journal has become one of the largest directories,
and since systemd-journal-gatewayd, systemd-journal-remote, and
forthcoming systemd-journal-upload are all closely related, create
a separate directory for them.

1 files changed, 0 insertions, 1054 deletions

diff --git a/src/journal/journal-gatewayd.c b/src/journal/journal-gatewayd.c
deleted file mode 100644
index db07700111..0000000000
--- a/src/journal/journal-gatewayd.c
+++ /dev/null
@@ -1,1054 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2012 Lennart Poettering
-
-  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 <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <getopt.h>
-
-#include <microhttpd.h>
-
-#ifdef HAVE_GNUTLS
-#include <gnutls/gnutls.h>
-#endif
-
-#include "log.h"
-#include "util.h"
-#include "sd-journal.h"
-#include "sd-daemon.h"
-#include "sd-bus.h"
-#include "bus-util.h"
-#include "logs-show.h"
-#include "microhttpd-util.h"
-#include "build.h"
-#include "fileio.h"
-
-static char *key_pem = NULL;
-static char *cert_pem = NULL;
-static char *trust_pem = NULL;
-
-typedef struct RequestMeta {
-        sd_journal *journal;
-
-        OutputMode mode;
-
-        char *cursor;
-        int64_t n_skip;
-        uint64_t n_entries;
-        bool n_entries_set;
-
-        FILE *tmp;
-        uint64_t delta, size;
-
-        int argument_parse_error;
-
-        bool follow;
-        bool discrete;
-
-        uint64_t n_fields;
-        bool n_fields_set;
-} RequestMeta;
-
-static const char* const mime_types[_OUTPUT_MODE_MAX] = {
-        [OUTPUT_SHORT] = "text/plain",
-        [OUTPUT_JSON] = "application/json",
-        [OUTPUT_JSON_SSE] = "text/event-stream",
-        [OUTPUT_EXPORT] = "application/vnd.fdo.journal",
-};
-
-static RequestMeta *request_meta(void **connection_cls) {
-        RequestMeta *m;
-
-        assert(connection_cls);
-        if (*connection_cls)
-                return *connection_cls;
-
-        m = new0(RequestMeta, 1);
-        if (!m)
-                return NULL;
-
-        *connection_cls = m;
-        return m;
-}
-
-static void request_meta_free(
-                void *cls,
-                struct MHD_Connection *connection,
-                void **connection_cls,
-                enum MHD_RequestTerminationCode toe) {
-
-        RequestMeta *m = *connection_cls;
-
-        if (!m)
-                return;
-
-        if (m->journal)
-                sd_journal_close(m->journal);
-
-        if (m->tmp)
-                fclose(m->tmp);
-
-        free(m->cursor);
-        free(m);
-}
-
-static int open_journal(RequestMeta *m) {
-        assert(m);
-
-        if (m->journal)
-                return 0;
-
-        return sd_journal_open(&m->journal, SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM);
-}
-
-static ssize_t request_reader_entries(
-                void *cls,
-                uint64_t pos,
-                char *buf,
-                size_t max) {
-
-        RequestMeta *m = cls;
-        int r;
-        size_t n, k;
-
-        assert(m);
-        assert(buf);
-        assert(max > 0);
-        assert(pos >= m->delta);
-
-        pos -= m->delta;
-
-        while (pos >= m->size) {
-                off_t sz;
-
-                /* End of this entry, so let's serialize the next
-                 * one */
-
-                if (m->n_entries_set &&
-                    m->n_entries <= 0)
-                        return MHD_CONTENT_READER_END_OF_STREAM;
-
-                if (m->n_skip < 0)
-                        r = sd_journal_previous_skip(m->journal, (uint64_t) -m->n_skip + 1);
-                else if (m->n_skip > 0)
-                        r = sd_journal_next_skip(m->journal, (uint64_t) m->n_skip + 1);
-                else
-                        r = sd_journal_next(m->journal);
-
-                if (r < 0) {
-                        log_error("Failed to advance journal pointer: %s", strerror(-r));
-                        return MHD_CONTENT_READER_END_WITH_ERROR;
-                } else if (r == 0) {
-
-                        if (m->follow) {
-                                r = sd_journal_wait(m->journal, (uint64_t) -1);
-                                if (r < 0) {
-                                        log_error("Couldn't wait for journal event: %s", strerror(-r));
-                                        return MHD_CONTENT_READER_END_WITH_ERROR;
-                                }
-
-                                continue;
-                        }
-
-                        return MHD_CONTENT_READER_END_OF_STREAM;
-                }
-
-                if (m->discrete) {
-                        assert(m->cursor);
-
-                        r = sd_journal_test_cursor(m->journal, m->cursor);
-                        if (r < 0) {
-                                log_error("Failed to test cursor: %s", strerror(-r));
-                                return MHD_CONTENT_READER_END_WITH_ERROR;
-                        }
-
-                        if (r == 0)
-                                return MHD_CONTENT_READER_END_OF_STREAM;
-                }
-
-                pos -= m->size;
-                m->delta += m->size;
-
-                if (m->n_entries_set)
-                        m->n_entries -= 1;
-
-                m->n_skip = 0;
-
-                if (m->tmp)
-                        rewind(m->tmp);
-                else {
-                        m->tmp = tmpfile();
-                        if (!m->tmp) {
-                                log_error("Failed to create temporary file: %m");
-                                return MHD_CONTENT_READER_END_WITH_ERROR;
-                        }
-                }
-
-                r = output_journal(m->tmp, m->journal, m->mode, 0, OUTPUT_FULL_WIDTH, NULL);
-                if (r < 0) {
-                        log_error("Failed to serialize item: %s", strerror(-r));
-                        return MHD_CONTENT_READER_END_WITH_ERROR;
-                }
-
-                sz = ftello(m->tmp);
-                if (sz == (off_t) -1) {
-                        log_error("Failed to retrieve file position: %m");
-                        return MHD_CONTENT_READER_END_WITH_ERROR;
-                }
-
-                m->size = (uint64_t) sz;
-        }
-
-        if (fseeko(m->tmp, pos, SEEK_SET) < 0) {
-                log_error("Failed to seek to position: %m");
-                return MHD_CONTENT_READER_END_WITH_ERROR;
-        }
-
-        n = m->size - pos;
-        if (n > max)
-                n = max;
-
-        errno = 0;
-        k = fread(buf, 1, n, m->tmp);
-        if (k != n) {
-                log_error("Failed to read from file: %s", errno ? strerror(errno) : "Premature EOF");
-                return MHD_CONTENT_READER_END_WITH_ERROR;
-        }
-
-        return (ssize_t) k;
-}
-
-static int request_parse_accept(
-                RequestMeta *m,
-                struct MHD_Connection *connection) {
-
-        const char *header;
-
-        assert(m);
-        assert(connection);
-
-        header = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, "Accept");
-        if (!header)
-                return 0;
-
-        if (streq(header, mime_types[OUTPUT_JSON]))
-                m->mode = OUTPUT_JSON;
-        else if (streq(header, mime_types[OUTPUT_JSON_SSE]))
-                m->mode = OUTPUT_JSON_SSE;
-        else if (streq(header, mime_types[OUTPUT_EXPORT]))
-                m->mode = OUTPUT_EXPORT;
-        else
-                m->mode = OUTPUT_SHORT;
-
-        return 0;
-}
-
-static int request_parse_range(
-                RequestMeta *m,
-                struct MHD_Connection *connection) {
-
-        const char *range, *colon, *colon2;
-        int r;
-
-        assert(m);
-        assert(connection);
-
-        range = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, "Range");
-        if (!range)
-                return 0;
-
-        if (!startswith(range, "entries="))
-                return 0;
-
-        range += 8;
-        range += strspn(range, WHITESPACE);
-
-        colon = strchr(range, ':');
-        if (!colon)
-                m->cursor = strdup(range);
-        else {
-                const char *p;
-
-                colon2 = strchr(colon + 1, ':');
-                if (colon2) {
-                        _cleanup_free_ char *t;
-
-                        t = strndup(colon + 1, colon2 - colon - 1);
-                        if (!t)
-                                return -ENOMEM;
-
-                        r = safe_atoi64(t, &m->n_skip);
-                        if (r < 0)
-                                return r;
-                }
-
-                p = (colon2 ? colon2 : colon) + 1;
-                if (*p) {
-                        r = safe_atou64(p, &m->n_entries);
-                        if (r < 0)
-                                return r;
-
-                        if (m->n_entries <= 0)
-                                return -EINVAL;
-
-                        m->n_entries_set = true;
-                }
-
-                m->cursor = strndup(range, colon - range);
-        }
-
-        if (!m->cursor)
-                return -ENOMEM;
-
-        m->cursor[strcspn(m->cursor, WHITESPACE)] = 0;
-        if (isempty(m->cursor)) {
-                free(m->cursor);
-                m->cursor = NULL;
-        }
-
-        return 0;
-}
-
-static int request_parse_arguments_iterator(
-                void *cls,
-                enum MHD_ValueKind kind,
-                const char *key,
-                const char *value) {
-
-        RequestMeta *m = cls;
-        _cleanup_free_ char *p = NULL;
-        int r;
-
-        assert(m);
-
-        if (isempty(key)) {
-                m->argument_parse_error = -EINVAL;
-                return MHD_NO;
-        }
-
-        if (streq(key, "follow")) {
-                if (isempty(value)) {
-                        m->follow = true;
-                        return MHD_YES;
-                }
-
-                r = parse_boolean(value);
-                if (r < 0) {
-                        m->argument_parse_error = r;
-                        return MHD_NO;
-                }
-
-                m->follow = r;
-                return MHD_YES;
-        }
-
-        if (streq(key, "discrete")) {
-                if (isempty(value)) {
-                        m->discrete = true;
-                        return MHD_YES;
-                }
-
-                r = parse_boolean(value);
-                if (r < 0) {
-                        m->argument_parse_error = r;
-                        return MHD_NO;
-                }
-
-                m->discrete = r;
-                return MHD_YES;
-        }
-
-        if (streq(key, "boot")) {
-                if (isempty(value))
-                        r = true;
-                else {
-                        r = parse_boolean(value);
-                        if (r < 0) {
-                                m->argument_parse_error = r;
-                                return MHD_NO;
-                        }
-                }
-
-                if (r) {
-                        char match[9 + 32 + 1] = "_BOOT_ID=";
-                        sd_id128_t bid;
-
-                        r = sd_id128_get_boot(&bid);
-                        if (r < 0) {
-                                log_error("Failed to get boot ID: %s", strerror(-r));
-                                return MHD_NO;
-                        }
-
-                        sd_id128_to_string(bid, match + 9);
-                        r = sd_journal_add_match(m->journal, match, sizeof(match)-1);
-                        if (r < 0) {
-                                m->argument_parse_error = r;
-                                return MHD_NO;
-                        }
-                }
-
-                return MHD_YES;
-        }
-
-        p = strjoin(key, "=", strempty(value), NULL);
-        if (!p) {
-                m->argument_parse_error = log_oom();
-                return MHD_NO;
-        }
-
-        r = sd_journal_add_match(m->journal, p, 0);
-        if (r < 0) {
-                m->argument_parse_error = r;
-                return MHD_NO;
-        }
-
-        return MHD_YES;
-}
-
-static int request_parse_arguments(
-                RequestMeta *m,
-                struct MHD_Connection *connection) {
-
-        assert(m);
-        assert(connection);
-
-        m->argument_parse_error = 0;
-        MHD_get_connection_values(connection, MHD_GET_ARGUMENT_KIND, request_parse_arguments_iterator, m);
-
-        return m->argument_parse_error;
-}
-
-static int request_handler_entries(
-                struct MHD_Connection *connection,
-                void *connection_cls) {
-
-        struct MHD_Response *response;
-        RequestMeta *m = connection_cls;
-        int r;
-
-        assert(connection);
-        assert(m);
-
-        r = open_journal(m);
-        if (r < 0)
-                return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to open journal: %s\n", strerror(-r));
-
-        if (request_parse_accept(m, connection) < 0)
-                return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to parse Accept header.\n");
-
-        if (request_parse_range(m, connection) < 0)
-                return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to parse Range header.\n");
-
-        if (request_parse_arguments(m, connection) < 0)
-                return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to parse URL arguments.\n");
-
-        if (m->discrete) {
-                if (!m->cursor)
-                        return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Discrete seeks require a cursor specification.\n");
-
-                m->n_entries = 1;
-                m->n_entries_set = true;
-        }
-
-        if (m->cursor)
-                r = sd_journal_seek_cursor(m->journal, m->cursor);
-        else if (m->n_skip >= 0)
-                r = sd_journal_seek_head(m->journal);
-        else if (m->n_skip < 0)
-                r = sd_journal_seek_tail(m->journal);
-        if (r < 0)
-                return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to seek in journal.\n");
-
-        response = MHD_create_response_from_callback(MHD_SIZE_UNKNOWN, 4*1024, request_reader_entries, m, NULL);
-        if (!response)
-                return respond_oom(connection);
-
-        MHD_add_response_header(response, "Content-Type", mime_types[m->mode]);
-
-        r = MHD_queue_response(connection, MHD_HTTP_OK, response);
-        MHD_destroy_response(response);
-
-        return r;
-}
-
-static int output_field(FILE *f, OutputMode m, const char *d, size_t l) {
-        const char *eq;
-        size_t j;
-
-        eq = memchr(d, '=', l);
-        if (!eq)
-                return -EINVAL;
-
-        j = l - (eq - d + 1);
-
-        if (m == OUTPUT_JSON) {
-                fprintf(f, "{ \"%.*s\" : ", (int) (eq - d), d);
-                json_escape(f, eq+1, j, OUTPUT_FULL_WIDTH);
-                fputs(" }\n", f);
-        } else {
-                fwrite(eq+1, 1, j, f);
-                fputc('\n', f);
-        }
-
-        return 0;
-}
-
-static ssize_t request_reader_fields(
-                void *cls,
-                uint64_t pos,
-                char *buf,
-                size_t max) {
-
-        RequestMeta *m = cls;
-        int r;
-        size_t n, k;
-
-        assert(m);
-        assert(buf);
-        assert(max > 0);
-        assert(pos >= m->delta);
-
-        pos -= m->delta;
-
-        while (pos >= m->size) {
-                off_t sz;
-                const void *d;
-                size_t l;
-
-                /* End of this field, so let's serialize the next
-                 * one */
-
-                if (m->n_fields_set &&
-                    m->n_fields <= 0)
-                        return MHD_CONTENT_READER_END_OF_STREAM;
-
-                r = sd_journal_enumerate_unique(m->journal, &d, &l);
-                if (r < 0) {
-                        log_error("Failed to advance field index: %s", strerror(-r));
-                        return MHD_CONTENT_READER_END_WITH_ERROR;
-                } else if (r == 0)
-                        return MHD_CONTENT_READER_END_OF_STREAM;
-
-                pos -= m->size;
-                m->delta += m->size;
-
-                if (m->n_fields_set)
-                        m->n_fields -= 1;
-
-                if (m->tmp)
-                        rewind(m->tmp);
-                else {
-                        m->tmp = tmpfile();
-                        if (!m->tmp) {
-                                log_error("Failed to create temporary file: %m");
-                                return MHD_CONTENT_READER_END_WITH_ERROR;
-                        }
-                }
-
-                r = output_field(m->tmp, m->mode, d, l);
-                if (r < 0) {
-                        log_error("Failed to serialize item: %s", strerror(-r));
-                        return MHD_CONTENT_READER_END_WITH_ERROR;
-                }
-
-                sz = ftello(m->tmp);
-                if (sz == (off_t) -1) {
-                        log_error("Failed to retrieve file position: %m");
-                        return MHD_CONTENT_READER_END_WITH_ERROR;
-                }
-
-                m->size = (uint64_t) sz;
-        }
-
-        if (fseeko(m->tmp, pos, SEEK_SET) < 0) {
-                log_error("Failed to seek to position: %m");
-                return MHD_CONTENT_READER_END_WITH_ERROR;
-        }
-
-        n = m->size - pos;
-        if (n > max)
-                n = max;
-
-        errno = 0;
-        k = fread(buf, 1, n, m->tmp);
-        if (k != n) {
-                log_error("Failed to read from file: %s", errno ? strerror(errno) : "Premature EOF");
-                return MHD_CONTENT_READER_END_WITH_ERROR;
-        }
-
-        return (ssize_t) k;
-}
-
-static int request_handler_fields(
-                struct MHD_Connection *connection,
-                const char *field,
-                void *connection_cls) {
-
-        struct MHD_Response *response;
-        RequestMeta *m = connection_cls;
-        int r;
-
-        assert(connection);
-        assert(m);
-
-        r = open_journal(m);
-        if (r < 0)
-                return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to open journal: %s\n", strerror(-r));
-
-        if (request_parse_accept(m, connection) < 0)
-                return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to parse Accept header.\n");
-
-        r = sd_journal_query_unique(m->journal, field);
-        if (r < 0)
-                return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to query unique fields.\n");
-
-        response = MHD_create_response_from_callback(MHD_SIZE_UNKNOWN, 4*1024, request_reader_fields, m, NULL);
-        if (!response)
-                return respond_oom(connection);
-
-        MHD_add_response_header(response, "Content-Type", mime_types[m->mode == OUTPUT_JSON ? OUTPUT_JSON : OUTPUT_SHORT]);
-
-        r = MHD_queue_response(connection, MHD_HTTP_OK, response);
-        MHD_destroy_response(response);
-
-        return r;
-}
-
-static int request_handler_redirect(
-                struct MHD_Connection *connection,
-                const char *target) {
-
-        char *page;
-        struct MHD_Response *response;
-        int ret;
-
-        assert(connection);
-        assert(target);
-
-        if (asprintf(&page, "<html><body>Please continue to the <a href=\"%s\">journal browser</a>.</body></html>", target) < 0)
-                return respond_oom(connection);
-
-        response = MHD_create_response_from_buffer(strlen(page), page, MHD_RESPMEM_MUST_FREE);
-        if (!response) {
-                free(page);
-                return respond_oom(connection);
-        }
-
-        MHD_add_response_header(response, "Content-Type", "text/html");
-        MHD_add_response_header(response, "Location", target);
-
-        ret = MHD_queue_response(connection, MHD_HTTP_MOVED_PERMANENTLY, response);
-        MHD_destroy_response(response);
-
-        return ret;
-}
-
-static int request_handler_file(
-                struct MHD_Connection *connection,
-                const char *path,
-                const char *mime_type) {
-
-        struct MHD_Response *response;
-        int ret;
-        _cleanup_close_ int fd = -1;
-        struct stat st;
-
-        assert(connection);
-        assert(path);
-        assert(mime_type);
-
-        fd = open(path, O_RDONLY|O_CLOEXEC);
-        if (fd < 0)
-                return mhd_respondf(connection, MHD_HTTP_NOT_FOUND, "Failed to open file %s: %m\n", path);
-
-        if (fstat(fd, &st) < 0)
-                return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to stat file: %m\n");
-
-        response = MHD_create_response_from_fd_at_offset(st.st_size, fd, 0);
-        if (!response)
-                return respond_oom(connection);
-
-        fd = -1;
-
-        MHD_add_response_header(response, "Content-Type", mime_type);
-
-        ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
-        MHD_destroy_response(response);
-
-        return ret;
-}
-
-static int get_virtualization(char **v) {
-        _cleanup_bus_unref_ sd_bus *bus = NULL;
-        char *b = NULL;
-        int r;
-
-        r = sd_bus_default_system(&bus);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_get_property_string(
-                        bus,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "Virtualization",
-                        NULL,
-                        &b);
-        if (r < 0)
-                return r;
-
-        if (isempty(b)) {
-                free(b);
-                *v = NULL;
-                return 0;
-        }
-
-        *v = b;
-        return 1;
-}
-
-static int request_handler_machine(
-                struct MHD_Connection *connection,
-                void *connection_cls) {
-
-        struct MHD_Response *response;
-        RequestMeta *m = connection_cls;
-        int r;
-        _cleanup_free_ char* hostname = NULL, *os_name = NULL;
-        uint64_t cutoff_from = 0, cutoff_to = 0, usage;
-        char *json;
-        sd_id128_t mid, bid;
-        _cleanup_free_ char *v = NULL;
-
-        assert(connection);
-        assert(m);
-
-        r = open_journal(m);
-        if (r < 0)
-                return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to open journal: %s\n", strerror(-r));
-
-        r = sd_id128_get_machine(&mid);
-        if (r < 0)
-                return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to determine machine ID: %s\n", strerror(-r));
-
-        r = sd_id128_get_boot(&bid);
-        if (r < 0)
-                return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to determine boot ID: %s\n", strerror(-r));
-
-        hostname = gethostname_malloc();
-        if (!hostname)
-                return respond_oom(connection);
-
-        r = sd_journal_get_usage(m->journal, &usage);
-        if (r < 0)
-                return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to determine disk usage: %s\n", strerror(-r));
-
-        r = sd_journal_get_cutoff_realtime_usec(m->journal, &cutoff_from, &cutoff_to);
-        if (r < 0)
-                return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to determine disk usage: %s\n", strerror(-r));
-
-        if (parse_env_file("/etc/os-release", NEWLINE, "PRETTY_NAME", &os_name, NULL) == -ENOENT)
-                parse_env_file("/usr/lib/os-release", NEWLINE, "PRETTY_NAME", &os_name, NULL);
-
-        get_virtualization(&v);
-
-        r = asprintf(&json,
-                     "{ \"machine_id\" : \"" SD_ID128_FORMAT_STR "\","
-                     "\"boot_id\" : \"" SD_ID128_FORMAT_STR "\","
-                     "\"hostname\" : \"%s\","
-                     "\"os_pretty_name\" : \"%s\","
-                     "\"virtualization\" : \"%s\","
-                     "\"usage\" : \"%"PRIu64"\","
-                     "\"cutoff_from_realtime\" : \"%"PRIu64"\","
-                     "\"cutoff_to_realtime\" : \"%"PRIu64"\" }\n",
-                     SD_ID128_FORMAT_VAL(mid),
-                     SD_ID128_FORMAT_VAL(bid),
-                     hostname_cleanup(hostname, false),
-                     os_name ? os_name : "Linux",
-                     v ? v : "bare",
-                     usage,
-                     cutoff_from,
-                     cutoff_to);
-
-        if (r < 0)
-                return respond_oom(connection);
-
-        response = MHD_create_response_from_buffer(strlen(json), json, MHD_RESPMEM_MUST_FREE);
-        if (!response) {
-                free(json);
-                return respond_oom(connection);
-        }
-
-        MHD_add_response_header(response, "Content-Type", "application/json");
-        r = MHD_queue_response(connection, MHD_HTTP_OK, response);
-        MHD_destroy_response(response);
-
-        return r;
-}
-
-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) {
-        int r, code;
-
-        assert(connection);
-        assert(connection_cls);
-        assert(url);
-        assert(method);
-
-        if (!streq(method, "GET"))
-                return mhd_respond(connection, MHD_HTTP_METHOD_NOT_ACCEPTABLE,
-                                   "Unsupported method.\n");
-
-
-        if (!*connection_cls) {
-                if (!request_meta(connection_cls))
-                        return respond_oom(connection);
-                return MHD_YES;
-        }
-
-        if (trust_pem) {
-                r = check_permissions(connection, &code);
-                if (r < 0)
-                        return code;
-        }
-
-        if (streq(url, "/"))
-                return request_handler_redirect(connection, "/browse");
-
-        if (streq(url, "/entries"))
-                return request_handler_entries(connection, *connection_cls);
-
-        if (startswith(url, "/fields/"))
-                return request_handler_fields(connection, url + 8, *connection_cls);
-
-        if (streq(url, "/browse"))
-                return request_handler_file(connection, DOCUMENT_ROOT "/browse.html", "text/html");
-
-        if (streq(url, "/machine"))
-                return request_handler_machine(connection, *connection_cls);
-
-        return mhd_respond(connection, MHD_HTTP_NOT_FOUND, "Not found.\n");
-}
-
-static int help(void) {
-
-        printf("%s [OPTIONS...] ...\n\n"
-               "HTTP server for journal events.\n\n"
-               "  -h --help           Show this help\n"
-               "     --version        Show package version\n"
-               "     --cert=CERT.PEM  Server certificate in PEM format\n"
-               "     --key=KEY.PEM    Server key in PEM format\n"
-               "     --trust=CERT.PEM Certificat authority certificate in PEM format\n",
-               program_invocation_short_name);
-
-        return 0;
-}
-
-static int parse_argv(int argc, char *argv[]) {
-        enum {
-                ARG_VERSION = 0x100,
-                ARG_KEY,
-                ARG_CERT,
-                ARG_TRUST,
-        };
-
-        int r, c;
-
-        static const struct option options[] = {
-                { "help",    no_argument,       NULL, 'h'         },
-                { "version", no_argument,       NULL, ARG_VERSION },
-                { "key",     required_argument, NULL, ARG_KEY     },
-                { "cert",    required_argument, NULL, ARG_CERT    },
-                { "trust",   required_argument, NULL, ARG_TRUST   },
-                {}
-        };
-
-        assert(argc >= 0);
-        assert(argv);
-
-        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
-
-                switch(c) {
-
-                case 'h':
-                        return help();
-
-                case ARG_VERSION:
-                        puts(PACKAGE_STRING);
-                        puts(SYSTEMD_FEATURES);
-                        return 0;
-
-                case ARG_KEY:
-                        if (key_pem) {
-                                log_error("Key file specified twice");
-                                return -EINVAL;
-                        }
-                        r = read_full_file(optarg, &key_pem, NULL);
-                        if (r < 0) {
-                                log_error("Failed to read key file: %s", strerror(-r));
-                                return r;
-                        }
-                        assert(key_pem);
-                        break;
-
-                case ARG_CERT:
-                        if (cert_pem) {
-                                log_error("Certificate file specified twice");
-                                return -EINVAL;
-                        }
-                        r = read_full_file(optarg, &cert_pem, NULL);
-                        if (r < 0) {
-                                log_error("Failed to read certificate file: %s", strerror(-r));
-                                return r;
-                        }
-                        assert(cert_pem);
-                        break;
-
-                case ARG_TRUST:
-#ifdef HAVE_GNUTLS
-                        if (trust_pem) {
-                                log_error("CA certificate file specified twice");
-                                return -EINVAL;
-                        }
-                        r = read_full_file(optarg, &trust_pem, NULL);
-                        if (r < 0) {
-                                log_error("Failed to read CA certificate file: %s", strerror(-r));
-                                return r;
-                        }
-                        assert(trust_pem);
-                        break;
-#else
-                        log_error("Option --trust is not available.");
-#endif
-
-                case '?':
-                        return -EINVAL;
-
-                default:
-                        assert_not_reached("Unhandled option");
-                }
-
-        if (optind < argc) {
-                log_error("This program does not take arguments.");
-                return -EINVAL;
-        }
-
-        if (!!key_pem != !!cert_pem) {
-                log_error("Certificate and key files must be specified together");
-                return -EINVAL;
-        }
-
-        if (trust_pem && !key_pem) {
-                log_error("CA certificate can only be used with certificate file");
-                return -EINVAL;
-        }
-
-        return 1;
-}
-
-int main(int argc, char *argv[]) {
-        struct MHD_Daemon *d = NULL;
-        int r, n;
-
-        log_set_target(LOG_TARGET_AUTO);
-        log_parse_environment();
-        log_open();
-
-        r = parse_argv(argc, argv);
-        if (r < 0)
-                return EXIT_FAILURE;
-        if (r == 0)
-                return EXIT_SUCCESS;
-
-#ifdef HAVE_GNUTLS
-        gnutls_global_set_log_function(log_func_gnutls);
-        log_reset_gnutls_level();
-#endif
-
-        n = sd_listen_fds(1);
-        if (n < 0) {
-                log_error("Failed to determine passed sockets: %s", strerror(-n));
-                goto finish;
-        } else if (n > 1) {
-                log_error("Can't listen on more than one socket.");
-                goto finish;
-        } else {
-                struct MHD_OptionItem opts[] = {
-                        { MHD_OPTION_NOTIFY_COMPLETED,
-                          (intptr_t) request_meta_free, NULL },
-                        { MHD_OPTION_EXTERNAL_LOGGER,
-                          (intptr_t) microhttpd_logger, NULL },
-                        { MHD_OPTION_END, 0, NULL },
-                        { MHD_OPTION_END, 0, NULL },
-                        { MHD_OPTION_END, 0, NULL },
-                        { MHD_OPTION_END, 0, NULL },
-                        { MHD_OPTION_END, 0, NULL }};
-                int opts_pos = 2;
-                int flags = MHD_USE_THREAD_PER_CONNECTION|MHD_USE_POLL|MHD_USE_DEBUG;
-
-                if (n > 0)
-                        opts[opts_pos++] = (struct MHD_OptionItem)
-                                {MHD_OPTION_LISTEN_SOCKET, SD_LISTEN_FDS_START};
-                if (key_pem) {
-                        assert(cert_pem);
-                        opts[opts_pos++] = (struct MHD_OptionItem)
-                                {MHD_OPTION_HTTPS_MEM_KEY, 0, key_pem};
-                        opts[opts_pos++] = (struct MHD_OptionItem)
-                                {MHD_OPTION_HTTPS_MEM_CERT, 0, cert_pem};
-                        flags |= MHD_USE_SSL;
-                }
-                if (trust_pem) {
-                        assert(flags & MHD_USE_SSL);
-                        opts[opts_pos++] = (struct MHD_OptionItem)
-                                {MHD_OPTION_HTTPS_MEM_TRUST, 0, trust_pem};
-                }
-
-                d = MHD_start_daemon(flags, 19531,
-                                     NULL, NULL,
-                                     request_handler, NULL,
-                                     MHD_OPTION_ARRAY, opts,
-                                     MHD_OPTION_END);
-        }
-
-        if (!d) {
-                log_error("Failed to start daemon!");
-                goto finish;
-        }
-
-        pause();
-
-        r = EXIT_SUCCESS;
-
-finish:
-        if (d)
-                MHD_stop_daemon(d);
-
-        return r;
-}