#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 *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

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;

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"

" -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,

};

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 },

{}

};

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.");

#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 '?':

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(void) {

if (!arg_listen_http && !arg_listen_https)

return 0;

#ifdef HAVE_GNUTLS

gnutls_global_set_log_function(log_func_gnutls);

gnutls_global_set_log_level(GNUTLS_LOG_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();

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;

}