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3f6fd1ba65
This also allows us to drop build.h from a ton of files, hence do so. Since we touched the #includes of those files, let's order them properly according to CODING_STYLE.
1054 lines
32 KiB
C
1054 lines
32 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <microhttpd.h>
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#ifdef HAVE_GNUTLS
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#include <gnutls/gnutls.h>
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#endif
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#include "sd-journal.h"
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#include "sd-daemon.h"
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#include "sd-bus.h"
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#include "bus-util.h"
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#include "fileio.h"
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#include "hostname-util.h"
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#include "log.h"
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#include "logs-show.h"
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#include "microhttpd-util.h"
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#include "sigbus.h"
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#include "util.h"
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static char *arg_key_pem = NULL;
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static char *arg_cert_pem = NULL;
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static char *arg_trust_pem = NULL;
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typedef struct RequestMeta {
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sd_journal *journal;
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OutputMode mode;
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char *cursor;
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int64_t n_skip;
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uint64_t n_entries;
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bool n_entries_set;
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FILE *tmp;
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uint64_t delta, size;
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int argument_parse_error;
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bool follow;
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bool discrete;
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uint64_t n_fields;
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bool n_fields_set;
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} RequestMeta;
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static const char* const mime_types[_OUTPUT_MODE_MAX] = {
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[OUTPUT_SHORT] = "text/plain",
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[OUTPUT_JSON] = "application/json",
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[OUTPUT_JSON_SSE] = "text/event-stream",
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[OUTPUT_EXPORT] = "application/vnd.fdo.journal",
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};
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static RequestMeta *request_meta(void **connection_cls) {
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RequestMeta *m;
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assert(connection_cls);
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if (*connection_cls)
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return *connection_cls;
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m = new0(RequestMeta, 1);
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if (!m)
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return NULL;
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*connection_cls = m;
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return m;
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}
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static void request_meta_free(
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void *cls,
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struct MHD_Connection *connection,
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void **connection_cls,
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enum MHD_RequestTerminationCode toe) {
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RequestMeta *m = *connection_cls;
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if (!m)
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return;
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sd_journal_close(m->journal);
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safe_fclose(m->tmp);
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free(m->cursor);
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free(m);
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}
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static int open_journal(RequestMeta *m) {
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assert(m);
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if (m->journal)
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return 0;
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return sd_journal_open(&m->journal, SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM);
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}
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static int request_meta_ensure_tmp(RequestMeta *m) {
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if (m->tmp)
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rewind(m->tmp);
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else {
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int fd;
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fd = open_tmpfile("/tmp", O_RDWR|O_CLOEXEC);
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if (fd < 0)
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return fd;
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m->tmp = fdopen(fd, "w+");
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if (!m->tmp) {
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safe_close(fd);
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return -errno;
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}
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}
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return 0;
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}
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static ssize_t request_reader_entries(
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void *cls,
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uint64_t pos,
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char *buf,
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size_t max) {
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RequestMeta *m = cls;
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int r;
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size_t n, k;
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assert(m);
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assert(buf);
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assert(max > 0);
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assert(pos >= m->delta);
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pos -= m->delta;
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while (pos >= m->size) {
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off_t sz;
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/* End of this entry, so let's serialize the next
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* one */
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if (m->n_entries_set &&
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m->n_entries <= 0)
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return MHD_CONTENT_READER_END_OF_STREAM;
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if (m->n_skip < 0)
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r = sd_journal_previous_skip(m->journal, (uint64_t) -m->n_skip + 1);
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else if (m->n_skip > 0)
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r = sd_journal_next_skip(m->journal, (uint64_t) m->n_skip + 1);
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else
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r = sd_journal_next(m->journal);
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if (r < 0) {
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log_error_errno(r, "Failed to advance journal pointer: %m");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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} else if (r == 0) {
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if (m->follow) {
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r = sd_journal_wait(m->journal, (uint64_t) -1);
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if (r < 0) {
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log_error_errno(r, "Couldn't wait for journal event: %m");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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}
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continue;
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}
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return MHD_CONTENT_READER_END_OF_STREAM;
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}
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if (m->discrete) {
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assert(m->cursor);
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r = sd_journal_test_cursor(m->journal, m->cursor);
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if (r < 0) {
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log_error_errno(r, "Failed to test cursor: %m");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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}
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if (r == 0)
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return MHD_CONTENT_READER_END_OF_STREAM;
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}
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pos -= m->size;
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m->delta += m->size;
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if (m->n_entries_set)
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m->n_entries -= 1;
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m->n_skip = 0;
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r = request_meta_ensure_tmp(m);
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if (r < 0) {
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log_error_errno(r, "Failed to create temporary file: %m");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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}
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r = output_journal(m->tmp, m->journal, m->mode, 0, OUTPUT_FULL_WIDTH, NULL);
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if (r < 0) {
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log_error_errno(r, "Failed to serialize item: %m");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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}
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sz = ftello(m->tmp);
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if (sz == (off_t) -1) {
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log_error_errno(errno, "Failed to retrieve file position: %m");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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}
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m->size = (uint64_t) sz;
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}
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if (fseeko(m->tmp, pos, SEEK_SET) < 0) {
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log_error_errno(errno, "Failed to seek to position: %m");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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}
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n = m->size - pos;
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if (n > max)
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n = max;
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errno = 0;
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k = fread(buf, 1, n, m->tmp);
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if (k != n) {
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log_error("Failed to read from file: %s", errno ? strerror(errno) : "Premature EOF");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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}
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return (ssize_t) k;
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}
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static int request_parse_accept(
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RequestMeta *m,
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struct MHD_Connection *connection) {
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const char *header;
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assert(m);
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assert(connection);
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header = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, "Accept");
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if (!header)
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return 0;
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if (streq(header, mime_types[OUTPUT_JSON]))
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m->mode = OUTPUT_JSON;
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else if (streq(header, mime_types[OUTPUT_JSON_SSE]))
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m->mode = OUTPUT_JSON_SSE;
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else if (streq(header, mime_types[OUTPUT_EXPORT]))
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m->mode = OUTPUT_EXPORT;
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else
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m->mode = OUTPUT_SHORT;
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return 0;
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}
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static int request_parse_range(
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RequestMeta *m,
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struct MHD_Connection *connection) {
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const char *range, *colon, *colon2;
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int r;
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assert(m);
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assert(connection);
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range = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, "Range");
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if (!range)
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return 0;
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if (!startswith(range, "entries="))
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return 0;
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range += 8;
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range += strspn(range, WHITESPACE);
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colon = strchr(range, ':');
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if (!colon)
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m->cursor = strdup(range);
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else {
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const char *p;
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colon2 = strchr(colon + 1, ':');
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if (colon2) {
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_cleanup_free_ char *t;
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t = strndup(colon + 1, colon2 - colon - 1);
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if (!t)
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return -ENOMEM;
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r = safe_atoi64(t, &m->n_skip);
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if (r < 0)
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return r;
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}
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p = (colon2 ? colon2 : colon) + 1;
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if (*p) {
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r = safe_atou64(p, &m->n_entries);
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if (r < 0)
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return r;
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if (m->n_entries <= 0)
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return -EINVAL;
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m->n_entries_set = true;
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}
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m->cursor = strndup(range, colon - range);
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}
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if (!m->cursor)
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return -ENOMEM;
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m->cursor[strcspn(m->cursor, WHITESPACE)] = 0;
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if (isempty(m->cursor))
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m->cursor = mfree(m->cursor);
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return 0;
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}
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static int request_parse_arguments_iterator(
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void *cls,
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enum MHD_ValueKind kind,
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const char *key,
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const char *value) {
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RequestMeta *m = cls;
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_cleanup_free_ char *p = NULL;
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int r;
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assert(m);
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if (isempty(key)) {
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m->argument_parse_error = -EINVAL;
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return MHD_NO;
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}
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if (streq(key, "follow")) {
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if (isempty(value)) {
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m->follow = true;
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return MHD_YES;
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}
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r = parse_boolean(value);
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if (r < 0) {
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m->argument_parse_error = r;
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return MHD_NO;
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}
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m->follow = r;
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return MHD_YES;
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}
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if (streq(key, "discrete")) {
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if (isempty(value)) {
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m->discrete = true;
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return MHD_YES;
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}
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r = parse_boolean(value);
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if (r < 0) {
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m->argument_parse_error = r;
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return MHD_NO;
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}
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m->discrete = r;
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return MHD_YES;
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}
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if (streq(key, "boot")) {
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if (isempty(value))
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r = true;
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else {
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r = parse_boolean(value);
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if (r < 0) {
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m->argument_parse_error = r;
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return MHD_NO;
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}
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}
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if (r) {
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char match[9 + 32 + 1] = "_BOOT_ID=";
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sd_id128_t bid;
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r = sd_id128_get_boot(&bid);
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if (r < 0) {
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log_error_errno(r, "Failed to get boot ID: %m");
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return MHD_NO;
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}
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sd_id128_to_string(bid, match + 9);
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r = sd_journal_add_match(m->journal, match, sizeof(match)-1);
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if (r < 0) {
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m->argument_parse_error = r;
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return MHD_NO;
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}
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}
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return MHD_YES;
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}
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p = strjoin(key, "=", strempty(value), NULL);
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if (!p) {
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m->argument_parse_error = log_oom();
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return MHD_NO;
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}
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r = sd_journal_add_match(m->journal, p, 0);
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if (r < 0) {
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m->argument_parse_error = r;
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return MHD_NO;
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}
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return MHD_YES;
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}
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static int request_parse_arguments(
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RequestMeta *m,
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struct MHD_Connection *connection) {
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assert(m);
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assert(connection);
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m->argument_parse_error = 0;
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MHD_get_connection_values(connection, MHD_GET_ARGUMENT_KIND, request_parse_arguments_iterator, m);
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return m->argument_parse_error;
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}
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static int request_handler_entries(
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struct MHD_Connection *connection,
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void *connection_cls) {
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struct MHD_Response *response;
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RequestMeta *m = connection_cls;
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int r;
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assert(connection);
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assert(m);
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r = open_journal(m);
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if (r < 0)
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return mhd_respondf(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to open journal: %s\n", strerror(-r));
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if (request_parse_accept(m, connection) < 0)
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return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to parse Accept header.\n");
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if (request_parse_range(m, connection) < 0)
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return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to parse Range header.\n");
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if (request_parse_arguments(m, connection) < 0)
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return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to parse URL arguments.\n");
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if (m->discrete) {
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if (!m->cursor)
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return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Discrete seeks require a cursor specification.\n");
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m->n_entries = 1;
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m->n_entries_set = true;
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}
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if (m->cursor)
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r = sd_journal_seek_cursor(m->journal, m->cursor);
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else if (m->n_skip >= 0)
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r = sd_journal_seek_head(m->journal);
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else if (m->n_skip < 0)
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r = sd_journal_seek_tail(m->journal);
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if (r < 0)
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return mhd_respond(connection, MHD_HTTP_BAD_REQUEST, "Failed to seek in journal.\n");
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response = MHD_create_response_from_callback(MHD_SIZE_UNKNOWN, 4*1024, request_reader_entries, m, NULL);
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if (!response)
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return respond_oom(connection);
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MHD_add_response_header(response, "Content-Type", mime_types[m->mode]);
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r = MHD_queue_response(connection, MHD_HTTP_OK, response);
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MHD_destroy_response(response);
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return r;
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}
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static int output_field(FILE *f, OutputMode m, const char *d, size_t l) {
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const char *eq;
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size_t j;
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eq = memchr(d, '=', l);
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if (!eq)
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return -EINVAL;
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j = l - (eq - d + 1);
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if (m == OUTPUT_JSON) {
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fprintf(f, "{ \"%.*s\" : ", (int) (eq - d), d);
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json_escape(f, eq+1, j, OUTPUT_FULL_WIDTH);
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fputs(" }\n", f);
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} else {
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fwrite(eq+1, 1, j, f);
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fputc('\n', f);
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}
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return 0;
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}
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static ssize_t request_reader_fields(
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void *cls,
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uint64_t pos,
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char *buf,
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size_t max) {
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RequestMeta *m = cls;
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int r;
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size_t n, k;
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assert(m);
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assert(buf);
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assert(max > 0);
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assert(pos >= m->delta);
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pos -= m->delta;
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while (pos >= m->size) {
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off_t sz;
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const void *d;
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size_t l;
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/* End of this field, so let's serialize the next
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* one */
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if (m->n_fields_set &&
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m->n_fields <= 0)
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return MHD_CONTENT_READER_END_OF_STREAM;
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r = sd_journal_enumerate_unique(m->journal, &d, &l);
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if (r < 0) {
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log_error_errno(r, "Failed to advance field index: %m");
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return MHD_CONTENT_READER_END_WITH_ERROR;
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} else if (r == 0)
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return MHD_CONTENT_READER_END_OF_STREAM;
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pos -= m->size;
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m->delta += m->size;
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if (m->n_fields_set)
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m->n_fields -= 1;
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r = request_meta_ensure_tmp(m);
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if (r < 0) {
|
|
log_error_errno(r, "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_errno(r, "Failed to serialize item: %m");
|
|
return MHD_CONTENT_READER_END_WITH_ERROR;
|
|
}
|
|
|
|
sz = ftello(m->tmp);
|
|
if (sz == (off_t) -1) {
|
|
log_error_errno(errno, "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_errno(errno, "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 = 0;
|
|
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)
|
|
(void) 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),
|
|
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 (arg_trust_pem) {
|
|
r = check_permissions(connection, &code, NULL);
|
|
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 void 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);
|
|
}
|
|
|
|
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':
|
|
help();
|
|
return 0;
|
|
|
|
case ARG_VERSION:
|
|
return version();
|
|
|
|
case ARG_KEY:
|
|
if (arg_key_pem) {
|
|
log_error("Key file specified twice");
|
|
return -EINVAL;
|
|
}
|
|
r = read_full_file(optarg, &arg_key_pem, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to read key file: %m");
|
|
assert(arg_key_pem);
|
|
break;
|
|
|
|
case ARG_CERT:
|
|
if (arg_cert_pem) {
|
|
log_error("Certificate file specified twice");
|
|
return -EINVAL;
|
|
}
|
|
r = read_full_file(optarg, &arg_cert_pem, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to read certificate file: %m");
|
|
assert(arg_cert_pem);
|
|
break;
|
|
|
|
case ARG_TRUST:
|
|
#ifdef HAVE_GNUTLS
|
|
if (arg_trust_pem) {
|
|
log_error("CA certificate file specified twice");
|
|
return -EINVAL;
|
|
}
|
|
r = read_full_file(optarg, &arg_trust_pem, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to read CA certificate file: %m");
|
|
assert(arg_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 (!!arg_key_pem != !!arg_cert_pem) {
|
|
log_error("Certificate and key files must be specified together");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (arg_trust_pem && !arg_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;
|
|
|
|
sigbus_install();
|
|
|
|
r = setup_gnutls_logger(NULL);
|
|
if (r < 0)
|
|
return EXIT_FAILURE;
|
|
|
|
n = sd_listen_fds(1);
|
|
if (n < 0) {
|
|
log_error_errno(n, "Failed to determine passed sockets: %m");
|
|
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 (arg_key_pem) {
|
|
assert(arg_cert_pem);
|
|
opts[opts_pos++] = (struct MHD_OptionItem)
|
|
{MHD_OPTION_HTTPS_MEM_KEY, 0, arg_key_pem};
|
|
opts[opts_pos++] = (struct MHD_OptionItem)
|
|
{MHD_OPTION_HTTPS_MEM_CERT, 0, arg_cert_pem};
|
|
flags |= MHD_USE_SSL;
|
|
}
|
|
if (arg_trust_pem) {
|
|
assert(flags & MHD_USE_SSL);
|
|
opts[opts_pos++] = (struct MHD_OptionItem)
|
|
{MHD_OPTION_HTTPS_MEM_TRUST, 0, arg_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;
|
|
}
|