diff options
Diffstat (limited to 'src/journal/journal-remote.c')
| -rw-r--r-- | src/journal/journal-remote.c | 1283 |
1 files changed, 0 insertions, 1283 deletions
diff --git a/src/journal/journal-remote.c b/src/journal/journal-remote.c deleted file mode 100644 index 9db4692a28..0000000000 --- a/src/journal/journal-remote.c +++ /dev/null @@ -1,1283 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2012 Zbigniew Jędrzejewski-Szmek - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <fcntl.h> -#include <inttypes.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/prctl.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> -#include <getopt.h> - -#include "sd-daemon.h" -#include "sd-event.h" -#include "journal-file.h" -#include "journald-native.h" -#include "socket-util.h" -#include "mkdir.h" -#include "build.h" -#include "macro.h" -#include "strv.h" -#include "fileio.h" -#include "microhttpd-util.h" - -#ifdef HAVE_GNUTLS -#include <gnutls/gnutls.h> -#endif - -#include "journal-remote-parse.h" -#include "journal-remote-write.h" - -#define REMOTE_JOURNAL_PATH "/var/log/journal/" SD_ID128_FORMAT_STR "/remote-%s.journal" - -static char* arg_output = NULL; -static char* arg_url = NULL; -static char* arg_getter = NULL; -static 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 char *key_pem = NULL; -static char *cert_pem = NULL; -static char *trust_pem = NULL; - -/********************************************************************** - ********************************************************************** - **********************************************************************/ - -static int spawn_child(const char* child, char** argv) { - int fd[2]; - pid_t parent_pid, child_pid; - int r; - - if (pipe(fd) < 0) { - log_error("Failed to create pager pipe: %m"); - return -errno; - } - - parent_pid = getpid(); - - child_pid = fork(); - if (child_pid < 0) { - r = -errno; - log_error("Failed to fork: %m"); - safe_close_pair(fd); - return r; - } - - /* In the child */ - if (child_pid == 0) { - r = dup2(fd[1], STDOUT_FILENO); - if (r < 0) { - log_error("Failed to dup pipe to stdout: %m"); - _exit(EXIT_FAILURE); - } - - 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("Failed to exec child %s: %m", child); - _exit(EXIT_FAILURE); - } - - r = close(fd[1]); - if (r < 0) - log_warning("Failed to close write end of pipe: %m"); - - return fd[0]; -} - -static int spawn_curl(char* url) { - char **argv = STRV_MAKE("curl", - "-HAccept: application/vnd.fdo.journal", - "--silent", - "--show-error", - url); - int r; - - r = spawn_child("curl", argv); - if (r < 0) - log_error("Failed to spawn curl: %m"); - return r; -} - -static int spawn_getter(char *getter, char *url) { - int r; - _cleanup_strv_free_ char **words = NULL; - - assert(getter); - words = strv_split_quoted(getter); - if (!words) - return log_oom(); - - r = spawn_child(words[0], words); - if (r < 0) - log_error("Failed to spawn getter %s: %m", getter); - - return r; -} - -static int open_output(Writer *s, const char* url) { - _cleanup_free_ char *name, *output = NULL; - char *c; - int r; - - assert(url); - name = strdup(url); - if (!name) - return log_oom(); - - for(c = name; *c; c++) { - if (*c == '/' || *c == ':' || *c == ' ') - *c = '~'; - else if (*c == '?') { - *c = '\0'; - break; - } - } - - if (!arg_output) { - sd_id128_t machine; - r = sd_id128_get_machine(&machine); - if (r < 0) { - log_error("failed to determine machine ID128: %s", strerror(-r)); - return r; - } - - r = asprintf(&output, REMOTE_JOURNAL_PATH, - SD_ID128_FORMAT_VAL(machine), name); - if (r < 0) - return log_oom(); - } else { - r = is_dir(arg_output, true); - if (r > 0) { - r = asprintf(&output, - "%s/remote-%s.journal", arg_output, name); - if (r < 0) - return log_oom(); - } else { - output = strdup(arg_output); - if (!output) - return log_oom(); - } - } - - r = journal_file_open_reliably(output, - O_RDWR|O_CREAT, 0640, - arg_compress, arg_seal, - &s->metrics, - s->mmap, - NULL, &s->journal); - if (r < 0) - log_error("Failed to open output journal %s: %s", - arg_output, strerror(-r)); - else - log_info("Opened output file %s", s->journal->path); - return r; -} - -/********************************************************************** - ********************************************************************** - **********************************************************************/ - -typedef struct MHDDaemonWrapper { - uint64_t fd; - struct MHD_Daemon *daemon; - - sd_event_source *event; -} MHDDaemonWrapper; - -typedef struct RemoteServer { - RemoteSource **sources; - size_t sources_size; - size_t active; - - sd_event *events; - sd_event_source *sigterm_event, *sigint_event, *listen_event; - - Writer writer; - - Hashmap *daemons; -} RemoteServer; - -/* 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_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, RemoteSource **source) { - assert(fd >= 0); - assert(source); - - if (!GREEDY_REALLOC0(s->sources, s->sources_size, fd + 1)) - return log_oom(); - - if (s->sources[fd] == NULL) { - s->sources[fd] = new0(RemoteSource, 1); - if (!s->sources[fd]) - return log_oom(); - s->sources[fd]->fd = -1; - s->active++; - } - - *source = s->sources[fd]; - return 0; -} - -static int remove_source(RemoteServer *s, int fd) { - RemoteSource *source; - - assert(s); - assert(fd >= 0 && fd < (ssize_t) s->sources_size); - - source = s->sources[fd]; - if (source) { - source_free(source); - s->sources[fd] = NULL; - s->active--; - } - - close(fd); - - return 0; -} - -static int add_source(RemoteServer *s, int fd, const char* name) { - RemoteSource *source = NULL; - _cleanup_free_ char *realname = NULL; - int r; - - assert(s); - assert(fd >= 0); - - if (name) { - realname = strdup(name); - if (!realname) - return log_oom(); - } else { - r = asprintf(&realname, "fd:%d", fd); - if (r < 0) - return log_oom(); - } - - log_debug("Creating source for fd:%d (%s)", fd, realname); - - r = get_source_for_fd(s, fd, &source); - if (r < 0) { - log_error("Failed to create source for fd:%d (%s)", fd, realname); - return r; - } - assert(source); - assert(source->fd < 0); - source->fd = fd; - - r = sd_event_add_io(s->events, &source->event, - fd, EPOLLIN, dispatch_raw_source_event, s); - if (r < 0) { - log_error("Failed to register event source for fd:%d: %s", - fd, strerror(-r)); - goto error; - } - - return 1; /* work to do */ - - error: - remove_source(s, fd); - return r; -} - -static int add_raw_socket(RemoteServer *s, int fd) { - int r; - - r = sd_event_add_io(s->events, &s->listen_event, fd, EPOLLIN, - dispatch_raw_connection_event, s); - if (r < 0) { - close(fd); - return r; - } - - s->active ++; - return 0; -} - -static int 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 RemoteSource *request_meta(void **connection_cls) { - RemoteSource *source; - - assert(connection_cls); - if (*connection_cls) - return *connection_cls; - - source = new0(RemoteSource, 1); - if (!source) - return NULL; - source->fd = -1; - - log_debug("Added RemoteSource as connection metadata %p", source); - - *connection_cls = source; - return source; -} - -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; - - 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; - int r; - - assert(source); - - log_debug("request_handler_upload: connection %p, %zu bytes", - connection, *upload_data_size); - - if (*upload_data_size) { - log_info("Received %zu bytes", *upload_data_size); - - r = push_data(source, upload_data, *upload_data_size); - if (r < 0) { - log_error("Failed to store received data of size %zu: %s", - *upload_data_size, strerror(-r)); - return mhd_respond_oom(connection); - } - *upload_data_size = 0; - } else - finished = true; - - while (true) { - r = process_source(source, &server->writer, arg_compress, arg_seal); - if (r == -E2BIG) - log_warning("Entry too big, skipped"); - else if (r == -EAGAIN || r == -EWOULDBLOCK) - break; - else if (r < 0) { - log_warning("Failed to process data for connection %p", connection); - return mhd_respondf(connection, MHD_HTTP_UNPROCESSABLE_ENTITY, - "Processing failed: %s", strerror(-r)); - } - } - - if (!finished) - return MHD_YES; - - /* The upload is finished */ - - if (source_non_empty(source)) { - log_warning("EOF reached with incomplete data"); - return mhd_respond(connection, MHD_HTTP_EXPECTATION_FAILED, - "Trailing data not processed."); - } - - 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; - - assert(connection); - assert(connection_cls); - assert(url); - assert(method); - - log_debug("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_METHOD_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"); - - if (trust_pem) { - r = check_permissions(connection, &code); - if (r < 0) - return code; - } - - if (!request_meta(connection_cls)) - return respond_oom(connection); - return MHD_YES; -} - -static int setup_microhttpd_server(RemoteServer *s, int fd, bool https) { - 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_END}, - { MHD_OPTION_END}, - { MHD_OPTION_END}, - { MHD_OPTION_END}}; - int opts_pos = 3; - int flags = - MHD_USE_DEBUG | - MHD_USE_PEDANTIC_CHECKS | - MHD_USE_EPOLL_LINUX_ONLY | - MHD_USE_DUAL_STACK; - - const union MHD_DaemonInfo *info; - int r, epoll_fd; - MHDDaemonWrapper *d; - - assert(fd >= 0); - - r = fd_nonblock(fd, true); - if (r < 0) { - log_error("Failed to make fd:%d nonblocking: %s", fd, strerror(-r)); - return r; - } - - if (https) { - 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) - opts[opts_pos++] = (struct MHD_OptionItem) - {MHD_OPTION_HTTPS_MEM_TRUST, 0, trust_pem}; - } - - 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)", - https ? "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 = -ENOTSUP; - 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("Failed to add event callback: %s", strerror(-r)); - goto error; - } - - r = hashmap_ensure_allocated(&s->daemons, uint64_hash_func, uint64_compare_func); - if (r < 0) { - log_oom(); - goto error; - } - - r = hashmap_put(s->daemons, &d->fd, d); - if (r < 0) { - log_error("Failed to add daemon to hashmap: %s", strerror(-r)); - 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, - bool https) { - int fd; - - fd = make_socket_fd(LOG_INFO, address, SOCK_STREAM | SOCK_CLOEXEC); - if (fd < 0) - return fd; - - return setup_microhttpd_server(s, fd, https); -} - -static int dispatch_http_event(sd_event_source *event, - int fd, - uint32_t revents, - void *userdata) { - MHDDaemonWrapper *d = userdata; - int r; - - assert(d); - - log_info("%s", __func__); - - 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 dispatch_sigterm(sd_event_source *event, - const struct signalfd_siginfo *si, - void *userdata) { - RemoteServer *s = userdata; - - assert(s); - - log_received_signal(LOG_INFO, si); - - sd_event_exit(s->events, 0); - return 0; -} - -static int setup_signals(RemoteServer *s) { - sigset_t mask; - int r; - - assert(s); - - assert_se(sigemptyset(&mask) == 0); - sigset_add_many(&mask, SIGINT, SIGTERM, -1); - assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); - - r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, dispatch_sigterm, s); - if (r < 0) - return r; - - r = sd_event_add_signal(s->events, &s->sigint_event, SIGINT, dispatch_sigterm, s); - if (r < 0) - return r; - - return 0; -} - -static int fd_fd(const char *spec) { - int fd, r; - - r = safe_atoi(spec, &fd); - if (r < 0) - return r; - - if (fd >= 0) - return -ENOENT; - - return -fd; -} - - -static int remoteserver_init(RemoteServer *s) { - int r, n, fd; - const char *output_name = NULL; - char **file; - - assert(s); - - sd_event_default(&s->events); - - setup_signals(s); - - assert(server == NULL); - server = s; - - n = sd_listen_fds(true); - if (n < 0) { - log_error("Failed to read listening file descriptors from environment: %s", - strerror(-n)); - return n; - } else - log_info("Received %d descriptors", n); - - 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, false)) { - log_info("Received a listening socket (fd:%d)", fd); - - if (fd == http_socket) - r = setup_microhttpd_server(s, fd, false); - else if (fd == https_socket) - r = setup_microhttpd_server(s, fd, true); - else - r = add_raw_socket(s, fd); - } else if (sd_is_socket(fd, AF_UNSPEC, 0, true)) { - log_info("Received a connection socket (fd:%d)", fd); - - r = add_source(s, fd, NULL); - } else { - log_error("Unknown socket passed on fd:%d", fd); - - return -EINVAL; - } - - if(r < 0) { - log_error("Failed to register socket (fd:%d): %s", - fd, strerror(-r)); - return r; - } - - output_name = "socket"; - } - - if (arg_url) { - _cleanup_free_ char *url = NULL; - _cleanup_strv_free_ char **urlv = strv_new(arg_url, "/entries", NULL); - if (!urlv) - return log_oom(); - url = strv_join(urlv, ""); - if (!url) - return log_oom(); - - if (arg_getter) { - log_info("Spawning getter %s...", url); - fd = spawn_getter(arg_getter, url); - } else { - log_info("Spawning curl %s...", url); - fd = spawn_curl(url); - } - if (fd < 0) - return fd; - - r = add_source(s, fd, arg_url); - if (r < 0) - return r; - - output_name = arg_url; - } - - if (arg_listen_raw) { - log_info("Listening on a socket..."); - r = setup_raw_socket(s, arg_listen_raw); - if (r < 0) - return r; - - output_name = arg_listen_raw; - } - - if (arg_listen_http) { - r = setup_microhttpd_socket(s, arg_listen_http, false); - if (r < 0) - return r; - - output_name = arg_listen_http; - } - - if (arg_listen_https) { - r = setup_microhttpd_socket(s, arg_listen_https, true); - if (r < 0) - return r; - - output_name = arg_listen_https; - } - - STRV_FOREACH(file, arg_files) { - if (streq(*file, "-")) { - log_info("Reading standard input..."); - - fd = STDIN_FILENO; - output_name = "stdin"; - } else { - log_info("Reading file %s...", *file); - - fd = open(*file, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK); - if (fd < 0) { - log_error("Failed to open %s: %m", *file); - return -errno; - } - output_name = *file; - } - - r = add_source(s, fd, output_name); - if (r < 0) - return r; - } - - if (s->active == 0) { - log_error("Zarro sources specified"); - return -EINVAL; - } - - if (!!n + !!arg_url + !!arg_listen_raw + !!arg_files) - output_name = "multiple"; - - r = writer_init(&s->writer); - if (r < 0) - return r; - - r = open_output(&s->writer, output_name); - return r; -} - -static int server_destroy(RemoteServer *s) { - int r; - size_t i; - MHDDaemonWrapper *d; - - r = writer_close(&s->writer); - - 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); - - sd_event_source_unref(s->sigterm_event); - sd_event_source_unref(s->sigint_event); - sd_event_source_unref(s->listen_event); - sd_event_unref(s->events); - - /* fds that we're listening on remain open... */ - - return r; -} - -/********************************************************************** - ********************************************************************** - **********************************************************************/ - -static int dispatch_raw_source_event(sd_event_source *event, - int fd, - uint32_t revents, - void *userdata) { - - RemoteServer *s = userdata; - RemoteSource *source; - int r; - - assert(fd >= 0 && fd < (ssize_t) s->sources_size); - source = s->sources[fd]; - assert(source->fd == fd); - - r = process_source(source, &s->writer, arg_compress, arg_seal); - if (source->state == STATE_EOF) { - log_info("EOF reached with source fd:%d (%s)", - source->fd, source->name); - if (source_non_empty(source)) - log_warning("EOF reached with incomplete data"); - remove_source(s, source->fd); - log_info("%zd active source remaining", s->active); - } else if (r == -E2BIG) { - log_error("Entry too big, skipped"); - r = 1; - } - - return r; -} - -static int accept_connection(const char* type, int fd, SocketAddress *addr) { - 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) { - log_error("accept() on fd:%d failed: %m", fd); - return -errno; - } - - switch(socket_address_family(addr)) { - case AF_INET: - case AF_INET6: { - char* _cleanup_free_ a = NULL; - - r = socket_address_print(addr, &a); - if (r < 0) { - log_error("socket_address_print(): %s", strerror(-r)); - close(fd2); - return r; - } - - log_info("Accepted %s %s connection from %s", - type, - socket_address_family(addr) == AF_INET ? "IP" : "IPv6", - a); - - 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, - }; - - fd2 = accept_connection("raw", fd, &addr); - if (fd2 < 0) - return fd2; - - return add_source(s, fd2, NULL); -} - -/********************************************************************** - ********************************************************************** - **********************************************************************/ - -static int help(void) { - printf("%s [OPTIONS...] {FILE|-}...\n\n" - "Write external journal events to a journal file.\n\n" - "Options:\n" - " --url=URL Read events from systemd-journal-gatewayd at URL\n" - " --getter=COMMAND Read events from the output of COMMAND\n" - " --listen-raw=ADDR Listen for connections at ADDR\n" - " --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" - " --[no-]compress Use XZ-compression in the output journal (default: yes)\n" - " --[no-]seal Use Event sealing in the output journal (default: no)\n" - " --key=FILENAME Specify key in PEM format\n" - " --cert=FILENAME Specify certificate in PEM format\n" - " --trust=FILENAME Specify CA certificate in PEM format\n" - " --gnutls-log=CATEGORY...\n" - " Specify a list of gnutls logging categories\n" - " -h --help Show this help and exit\n" - " --version Print version string and exit\n" - "\n" - "Note: file descriptors from sd_listen_fds() will be consumed, too.\n" - , program_invocation_short_name); - - return 0; -} - -static int parse_argv(int argc, char *argv[]) { - enum { - ARG_VERSION = 0x100, - ARG_URL, - ARG_LISTEN_RAW, - ARG_LISTEN_HTTP, - ARG_LISTEN_HTTPS, - ARG_GETTER, - ARG_COMPRESS, - ARG_NO_COMPRESS, - ARG_SEAL, - ARG_NO_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' }, - { "compress", no_argument, NULL, ARG_COMPRESS }, - { "no-compress", no_argument, NULL, ARG_NO_COMPRESS }, - { "seal", no_argument, NULL, ARG_SEAL }, - { "no-seal", no_argument, NULL, ARG_NO_SEAL }, - { "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; - - assert(argc >= 0); - assert(argv); - - while ((c = getopt_long(argc, argv, "ho:", options, NULL)) >= 0) - switch(c) { - case 'h': - help(); - return 0 /* done */; - - case ARG_VERSION: - puts(PACKAGE_STRING); - puts(SYSTEMD_FEATURES); - return 0 /* done */; - - case ARG_URL: - if (arg_url) { - log_error("cannot currently set more than one --url"); - return -EINVAL; - } - - arg_url = optarg; - break; - - case ARG_GETTER: - if (arg_getter) { - log_error("cannot currently use --getter more than once"); - return -EINVAL; - } - - arg_getter = optarg; - break; - - case ARG_LISTEN_RAW: - if (arg_listen_raw) { - log_error("cannot currently use --listen-raw more than once"); - return -EINVAL; - } - - arg_listen_raw = optarg; - break; - - case ARG_LISTEN_HTTP: - if (arg_listen_http || http_socket >= 0) { - log_error("cannot currently use --listen-http more than once"); - return -EINVAL; - } - - r = fd_fd(optarg); - if (r >= 0) - http_socket = r; - else if (r == -ENOENT) - arg_listen_http = optarg; - else { - log_error("Invalid port/fd specification %s: %s", - optarg, strerror(-r)); - return -EINVAL; - } - - 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 = fd_fd(optarg); - if (r >= 0) - https_socket = r; - else if (r == -ENOENT) - arg_listen_https = optarg; - else { - log_error("Invalid port/fd specification %s: %s", - optarg, strerror(-r)); - return -EINVAL; - } - - break; - - 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."); - return -EINVAL; -#endif - - case 'o': - if (arg_output) { - log_error("cannot use --output/-o more than once"); - return -EINVAL; - } - - arg_output = optarg; - break; - - case ARG_COMPRESS: - arg_compress = true; - break; - case ARG_NO_COMPRESS: - arg_compress = false; - break; - case ARG_SEAL: - arg_seal = true; - break; - case ARG_NO_SEAL: - arg_seal = false; - break; - - case ARG_GNUTLS_LOG: { -#ifdef HAVE_GNUTLS - char *word, *state; - size_t size; - - FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) { - char *cat; - - cat = strndup(word, size); - if (!cat) - return log_oom(); - - if (strv_consume(&arg_gnutls_log, cat) < 0) - return log_oom(); - } - break; -#else - log_error("Option --gnutls-log is not available."); - return -EINVAL; -#endif - } - - case '?': - return -EINVAL; - - default: - log_error("Unknown option code %c", c); - return -EINVAL; - } - - if (arg_listen_https && !(key_pem && cert_pem)) { - log_error("Options --key and --cert must be used when https sources are specified"); - return -EINVAL; - } - - if (optind < argc) - arg_files = argv + optind; - - return 1 /* work to do */; -} - -static int setup_gnutls_logger(char **categories) { - if (!arg_listen_http && !arg_listen_https) - return 0; - -#ifdef HAVE_GNUTLS - { - char **cat; - int r; - - gnutls_global_set_log_function(log_func_gnutls); - - if (categories) - STRV_FOREACH(cat, categories) { - r = log_enable_gnutls_category(*cat); - if (r < 0) - return r; - } - else - log_reset_gnutls_level(); - } -#endif - - return 0; -} - -int main(int argc, char **argv) { - RemoteServer s = {}; - int r, r2; - - log_set_max_level(LOG_DEBUG); - log_show_color(true); - log_parse_environment(); - - r = parse_argv(argc, argv); - if (r <= 0) - return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE; - - r = setup_gnutls_logger(arg_gnutls_log); - if (r < 0) - return EXIT_FAILURE; - - if (remoteserver_init(&s) < 0) - return EXIT_FAILURE; - - 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("Failed to run event loop: %s", strerror(-r)); - break; - } - } - - log_info("Finishing after writing %" PRIu64 " entries", s.writer.seqnum); - r2 = server_destroy(&s); - - sd_notify(false, "STATUS=Shutting down..."); - - return r >= 0 && r2 >= 0 ? EXIT_SUCCESS : EXIT_FAILURE; -} |