./move.sh

2 files changed, 1260 insertions, 0 deletions

diff --git a/src/grp-import/systemd-importd/Makefile b/src/grp-import/systemd-importd/Makefile
new file mode 100644
index 0000000000..7911bfce82
--- /dev/null
+++ b/src/grp-import/systemd-importd/Makefile
@@ -0,0 +1,39 @@
+#  -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+#  This file is part of systemd.
+#
+#  Copyright 2010-2012 Lennart Poettering
+#  Copyright 2010-2012 Kay Sievers
+#  Copyright 2013 Zbigniew Jędrzejewski-Szmek
+#  Copyright 2013 David Strauss
+#  Copyright 2016 Luke Shumaker
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+#
+#  systemd is distributed in the hope that it will be useful, but
+#  WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+#  Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public License
+#  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+include $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+rootlibexec_PROGRAMS += systemd-importd
+systemd_importd_SOURCES = \
+	src/import/importd.c
+
+systemd_importd_CFLAGS = \
+	$(AM_CFLAGS) \
+	-D SYSTEMD_PULL_PATH=\"$(rootlibexecdir)/systemd-pull\" \
+	-D SYSTEMD_IMPORT_PATH=\"$(rootlibexecdir)/systemd-import\" \
+	-D SYSTEMD_EXPORT_PATH=\"$(rootlibexecdir)/systemd-export\"
+
+systemd_importd_LDADD = \
+	libshared.la
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/grp-import/systemd-importd/importd.c b/src/grp-import/systemd-importd/importd.c
new file mode 100644
index 0000000000..e30dfdf805
--- /dev/null
+++ b/src/grp-import/systemd-importd/importd.c
@@ -0,0 +1,1221 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2015 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/prctl.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-common-errors.h"
+#include "bus-util.h"
+#include "def.h"
+#include "fd-util.h"
+#include "hostname-util.h"
+#include "import-util.h"
+#include "machine-pool.h"
+#include "missing.h"
+#include "mkdir.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "process-util.h"
+#include "signal-util.h"
+#include "socket-util.h"
+#include "string-table.h"
+#include "strv.h"
+#include "syslog-util.h"
+#include "user-util.h"
+#include "util.h"
+#include "web-util.h"
+
+typedef struct Transfer Transfer;
+typedef struct Manager Manager;
+
+typedef enum TransferType {
+        TRANSFER_IMPORT_TAR,
+        TRANSFER_IMPORT_RAW,
+        TRANSFER_EXPORT_TAR,
+        TRANSFER_EXPORT_RAW,
+        TRANSFER_PULL_TAR,
+        TRANSFER_PULL_RAW,
+        _TRANSFER_TYPE_MAX,
+        _TRANSFER_TYPE_INVALID = -1,
+} TransferType;
+
+struct Transfer {
+        Manager *manager;
+
+        uint32_t id;
+        char *object_path;
+
+        TransferType type;
+        ImportVerify verify;
+
+        char *remote;
+        char *local;
+        bool force_local;
+        bool read_only;
+
+        char *format;
+
+        pid_t pid;
+
+        int log_fd;
+
+        char log_message[LINE_MAX];
+        size_t log_message_size;
+
+        sd_event_source *pid_event_source;
+        sd_event_source *log_event_source;
+
+        unsigned n_canceled;
+        unsigned progress_percent;
+
+        int stdin_fd;
+        int stdout_fd;
+};
+
+struct Manager {
+        sd_event *event;
+        sd_bus *bus;
+
+        uint32_t current_transfer_id;
+        Hashmap *transfers;
+
+        Hashmap *polkit_registry;
+
+        int notify_fd;
+
+        sd_event_source *notify_event_source;
+};
+
+#define TRANSFERS_MAX 64
+
+static const char* const transfer_type_table[_TRANSFER_TYPE_MAX] = {
+        [TRANSFER_IMPORT_TAR] = "import-tar",
+        [TRANSFER_IMPORT_RAW] = "import-raw",
+        [TRANSFER_EXPORT_TAR] = "export-tar",
+        [TRANSFER_EXPORT_RAW] = "export-raw",
+        [TRANSFER_PULL_TAR] = "pull-tar",
+        [TRANSFER_PULL_RAW] = "pull-raw",
+};
+
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(transfer_type, TransferType);
+
+static Transfer *transfer_unref(Transfer *t) {
+        if (!t)
+                return NULL;
+
+        if (t->manager)
+                hashmap_remove(t->manager->transfers, UINT32_TO_PTR(t->id));
+
+        sd_event_source_unref(t->pid_event_source);
+        sd_event_source_unref(t->log_event_source);
+
+        free(t->remote);
+        free(t->local);
+        free(t->format);
+        free(t->object_path);
+
+        if (t->pid > 0) {
+                (void) kill_and_sigcont(t->pid, SIGKILL);
+                (void) wait_for_terminate(t->pid, NULL);
+        }
+
+        safe_close(t->log_fd);
+        safe_close(t->stdin_fd);
+        safe_close(t->stdout_fd);
+
+        free(t);
+        return NULL;
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Transfer*, transfer_unref);
+
+static int transfer_new(Manager *m, Transfer **ret) {
+        _cleanup_(transfer_unrefp) Transfer *t = NULL;
+        uint32_t id;
+        int r;
+
+        assert(m);
+        assert(ret);
+
+        if (hashmap_size(m->transfers) >= TRANSFERS_MAX)
+                return -E2BIG;
+
+        r = hashmap_ensure_allocated(&m->transfers, &trivial_hash_ops);
+        if (r < 0)
+                return r;
+
+        t = new0(Transfer, 1);
+        if (!t)
+                return -ENOMEM;
+
+        t->type = _TRANSFER_TYPE_INVALID;
+        t->log_fd = -1;
+        t->stdin_fd = -1;
+        t->stdout_fd = -1;
+        t->verify = _IMPORT_VERIFY_INVALID;
+
+        id = m->current_transfer_id + 1;
+
+        if (asprintf(&t->object_path, "/org/freedesktop/import1/transfer/_%" PRIu32, id) < 0)
+                return -ENOMEM;
+
+        r = hashmap_put(m->transfers, UINT32_TO_PTR(id), t);
+        if (r < 0)
+                return r;
+
+        m->current_transfer_id = id;
+
+        t->manager = m;
+        t->id = id;
+
+        *ret = t;
+        t = NULL;
+
+        return 0;
+}
+
+static void transfer_send_log_line(Transfer *t, const char *line) {
+        int r, priority = LOG_INFO;
+
+        assert(t);
+        assert(line);
+
+        syslog_parse_priority(&line, &priority, true);
+
+        log_full(priority, "(transfer%" PRIu32 ") %s", t->id, line);
+
+        r = sd_bus_emit_signal(
+                        t->manager->bus,
+                        t->object_path,
+                        "org.freedesktop.import1.Transfer",
+                        "LogMessage",
+                        "us",
+                        priority,
+                        line);
+        if (r < 0)
+                log_error_errno(r, "Cannot emit message: %m");
+ }
+
+static void transfer_send_logs(Transfer *t, bool flush) {
+        assert(t);
+
+        /* Try to send out all log messages, if we can. But if we
+         * can't we remove the messages from the buffer, but don't
+         * fail */
+
+        while (t->log_message_size > 0) {
+                _cleanup_free_ char *n = NULL;
+                char *e;
+
+                if (t->log_message_size >= sizeof(t->log_message))
+                        e = t->log_message + sizeof(t->log_message);
+                else {
+                        char *a, *b;
+
+                        a = memchr(t->log_message, 0, t->log_message_size);
+                        b = memchr(t->log_message, '\n', t->log_message_size);
+
+                        if (a && b)
+                                e = a < b ? a : b;
+                        else if (a)
+                                e = a;
+                        else
+                                e = b;
+                }
+
+                if (!e) {
+                        if (!flush)
+                                return;
+
+                        e = t->log_message + t->log_message_size;
+                }
+
+                n = strndup(t->log_message, e - t->log_message);
+
+                /* Skip over NUL and newlines */
+                while ((e < t->log_message + t->log_message_size) && (*e == 0 || *e == '\n'))
+                        e++;
+
+                memmove(t->log_message, e, t->log_message + sizeof(t->log_message) - e);
+                t->log_message_size -= e - t->log_message;
+
+                if (!n) {
+                        log_oom();
+                        continue;
+                }
+
+                if (isempty(n))
+                        continue;
+
+                transfer_send_log_line(t, n);
+        }
+}
+
+static int transfer_finalize(Transfer *t, bool success) {
+        int r;
+
+        assert(t);
+
+        transfer_send_logs(t, true);
+
+        r = sd_bus_emit_signal(
+                        t->manager->bus,
+                        "/org/freedesktop/import1",
+                        "org.freedesktop.import1.Manager",
+                        "TransferRemoved",
+                        "uos",
+                        t->id,
+                        t->object_path,
+                        success ? "done" :
+                        t->n_canceled > 0 ? "canceled" : "failed");
+
+        if (r < 0)
+                log_error_errno(r, "Cannot emit message: %m");
+
+        transfer_unref(t);
+        return 0;
+}
+
+static int transfer_cancel(Transfer *t) {
+        int r;
+
+        assert(t);
+
+        r = kill_and_sigcont(t->pid, t->n_canceled < 3 ? SIGTERM : SIGKILL);
+        if (r < 0)
+                return r;
+
+        t->n_canceled++;
+        return 0;
+}
+
+static int transfer_on_pid(sd_event_source *s, const siginfo_t *si, void *userdata) {
+        Transfer *t = userdata;
+        bool success = false;
+
+        assert(s);
+        assert(t);
+
+        if (si->si_code == CLD_EXITED) {
+                if (si->si_status != 0)
+                        log_error("Import process failed with exit code %i.", si->si_status);
+                else {
+                        log_debug("Import process succeeded.");
+                        success = true;
+                }
+
+        } else if (si->si_code == CLD_KILLED ||
+                   si->si_code == CLD_DUMPED)
+
+                log_error("Import process terminated by signal %s.", signal_to_string(si->si_status));
+        else
+                log_error("Import process failed due to unknown reason.");
+
+        t->pid = 0;
+
+        return transfer_finalize(t, success);
+}
+
+static int transfer_on_log(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+        Transfer *t = userdata;
+        ssize_t l;
+
+        assert(s);
+        assert(t);
+
+        l = read(fd, t->log_message + t->log_message_size, sizeof(t->log_message) - t->log_message_size);
+        if (l <= 0) {
+                /* EOF/read error. We just close the pipe here, and
+                 * close the watch, waiting for the SIGCHLD to arrive,
+                 * before we do anything else. */
+
+                if (l < 0)
+                        log_error_errno(errno, "Failed to read log message: %m");
+
+                t->log_event_source = sd_event_source_unref(t->log_event_source);
+                return 0;
+        }
+
+        t->log_message_size += l;
+
+        transfer_send_logs(t, false);
+
+        return 0;
+}
+
+static int transfer_start(Transfer *t) {
+        _cleanup_close_pair_ int pipefd[2] = { -1, -1 };
+        int r;
+
+        assert(t);
+        assert(t->pid <= 0);
+
+        if (pipe2(pipefd, O_CLOEXEC) < 0)
+                return -errno;
+
+        t->pid = fork();
+        if (t->pid < 0)
+                return -errno;
+        if (t->pid == 0) {
+                const char *cmd[] = {
+                        NULL, /* systemd-import, systemd-export or systemd-pull */
+                        NULL, /* tar, raw  */
+                        NULL, /* --verify= */
+                        NULL, /* verify argument */
+                        NULL, /* maybe --force */
+                        NULL, /* maybe --read-only */
+                        NULL, /* if so: the actual URL */
+                        NULL, /* maybe --format= */
+                        NULL, /* if so: the actual format */
+                        NULL, /* remote */
+                        NULL, /* local */
+                        NULL
+                };
+                unsigned k = 0;
+
+                /* Child */
+
+                (void) reset_all_signal_handlers();
+                (void) reset_signal_mask();
+                assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
+
+                pipefd[0] = safe_close(pipefd[0]);
+
+                if (dup2(pipefd[1], STDERR_FILENO) != STDERR_FILENO) {
+                        log_error_errno(errno, "Failed to dup2() fd: %m");
+                        _exit(EXIT_FAILURE);
+                }
+
+                if (t->stdout_fd >= 0) {
+                        if (dup2(t->stdout_fd, STDOUT_FILENO) != STDOUT_FILENO) {
+                                log_error_errno(errno, "Failed to dup2() fd: %m");
+                                _exit(EXIT_FAILURE);
+                        }
+
+                        if (t->stdout_fd != STDOUT_FILENO)
+                                safe_close(t->stdout_fd);
+                } else {
+                        if (dup2(pipefd[1], STDOUT_FILENO) != STDOUT_FILENO) {
+                                log_error_errno(errno, "Failed to dup2() fd: %m");
+                                _exit(EXIT_FAILURE);
+                        }
+                }
+
+                if (pipefd[1] != STDOUT_FILENO && pipefd[1] != STDERR_FILENO)
+                        pipefd[1] = safe_close(pipefd[1]);
+
+                if (t->stdin_fd >= 0) {
+                        if (dup2(t->stdin_fd, STDIN_FILENO) != STDIN_FILENO) {
+                                log_error_errno(errno, "Failed to dup2() fd: %m");
+                                _exit(EXIT_FAILURE);
+                        }
+
+                        if (t->stdin_fd != STDIN_FILENO)
+                                safe_close(t->stdin_fd);
+                } else {
+                        int null_fd;
+
+                        null_fd = open("/dev/null", O_RDONLY|O_NOCTTY);
+                        if (null_fd < 0) {
+                                log_error_errno(errno, "Failed to open /dev/null: %m");
+                                _exit(EXIT_FAILURE);
+                        }
+
+                        if (dup2(null_fd, STDIN_FILENO) != STDIN_FILENO) {
+                                log_error_errno(errno, "Failed to dup2() fd: %m");
+                                _exit(EXIT_FAILURE);
+                        }
+
+                        if (null_fd != STDIN_FILENO)
+                                safe_close(null_fd);
+                }
+
+                fd_cloexec(STDIN_FILENO, false);
+                fd_cloexec(STDOUT_FILENO, false);
+                fd_cloexec(STDERR_FILENO, false);
+
+                setenv("SYSTEMD_LOG_TARGET", "console-prefixed", 1);
+                setenv("NOTIFY_SOCKET", "/run/systemd/import/notify", 1);
+
+                if (IN_SET(t->type, TRANSFER_IMPORT_TAR, TRANSFER_IMPORT_RAW))
+                        cmd[k++] = SYSTEMD_IMPORT_PATH;
+                else if (IN_SET(t->type, TRANSFER_EXPORT_TAR, TRANSFER_EXPORT_RAW))
+                        cmd[k++] = SYSTEMD_EXPORT_PATH;
+                else
+                        cmd[k++] = SYSTEMD_PULL_PATH;
+
+                if (IN_SET(t->type, TRANSFER_IMPORT_TAR, TRANSFER_EXPORT_TAR, TRANSFER_PULL_TAR))
+                        cmd[k++] = "tar";
+                else
+                        cmd[k++] = "raw";
+
+                if (t->verify != _IMPORT_VERIFY_INVALID) {
+                        cmd[k++] = "--verify";
+                        cmd[k++] = import_verify_to_string(t->verify);
+                }
+
+                if (t->force_local)
+                        cmd[k++] = "--force";
+                if (t->read_only)
+                        cmd[k++] = "--read-only";
+
+                if (t->format) {
+                        cmd[k++] = "--format";
+                        cmd[k++] = t->format;
+                }
+
+                if (!IN_SET(t->type, TRANSFER_EXPORT_TAR, TRANSFER_EXPORT_RAW)) {
+                        if (t->remote)
+                                cmd[k++] = t->remote;
+                        else
+                                cmd[k++] = "-";
+                }
+
+                if (t->local)
+                        cmd[k++] = t->local;
+                cmd[k] = NULL;
+
+                execv(cmd[0], (char * const *) cmd);
+                log_error_errno(errno, "Failed to execute %s tool: %m", cmd[0]);
+                _exit(EXIT_FAILURE);
+        }
+
+        pipefd[1] = safe_close(pipefd[1]);
+        t->log_fd = pipefd[0];
+        pipefd[0] = -1;
+
+        t->stdin_fd = safe_close(t->stdin_fd);
+
+        r = sd_event_add_child(t->manager->event, &t->pid_event_source, t->pid, WEXITED, transfer_on_pid, t);
+        if (r < 0)
+                return r;
+
+        r = sd_event_add_io(t->manager->event, &t->log_event_source, t->log_fd, EPOLLIN, transfer_on_log, t);
+        if (r < 0)
+                return r;
+
+        /* Make sure always process logging before SIGCHLD */
+        r = sd_event_source_set_priority(t->log_event_source, SD_EVENT_PRIORITY_NORMAL -5);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_emit_signal(
+                        t->manager->bus,
+                        "/org/freedesktop/import1",
+                        "org.freedesktop.import1.Manager",
+                        "TransferNew",
+                        "uo",
+                        t->id,
+                        t->object_path);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+static Manager *manager_unref(Manager *m) {
+        Transfer *t;
+
+        if (!m)
+                return NULL;
+
+        sd_event_source_unref(m->notify_event_source);
+        safe_close(m->notify_fd);
+
+        while ((t = hashmap_first(m->transfers)))
+                transfer_unref(t);
+
+        hashmap_free(m->transfers);
+
+        bus_verify_polkit_async_registry_free(m->polkit_registry);
+
+        m->bus = sd_bus_flush_close_unref(m->bus);
+        sd_event_unref(m->event);
+
+        free(m);
+        return NULL;
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref);
+
+static int manager_on_notify(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+
+        char buf[NOTIFY_BUFFER_MAX+1];
+        struct iovec iovec = {
+                .iov_base = buf,
+                .iov_len = sizeof(buf)-1,
+        };
+        union {
+                struct cmsghdr cmsghdr;
+                uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
+                            CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
+        } control = {};
+        struct msghdr msghdr = {
+                .msg_iov = &iovec,
+                .msg_iovlen = 1,
+                .msg_control = &control,
+                .msg_controllen = sizeof(control),
+        };
+        struct ucred *ucred = NULL;
+        Manager *m = userdata;
+        struct cmsghdr *cmsg;
+        unsigned percent;
+        char *p, *e;
+        Transfer *t;
+        Iterator i;
+        ssize_t n;
+        int r;
+
+        n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
+        if (n < 0) {
+                if (errno == EAGAIN || errno == EINTR)
+                        return 0;
+
+                return -errno;
+        }
+
+        cmsg_close_all(&msghdr);
+
+        CMSG_FOREACH(cmsg, &msghdr)
+                if (cmsg->cmsg_level == SOL_SOCKET &&
+                    cmsg->cmsg_type == SCM_CREDENTIALS &&
+                    cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred)))
+                        ucred = (struct ucred*) CMSG_DATA(cmsg);
+
+        if (msghdr.msg_flags & MSG_TRUNC) {
+                log_warning("Got overly long notification datagram, ignoring.");
+                return 0;
+        }
+
+        if (!ucred || ucred->pid <= 0) {
+                log_warning("Got notification datagram lacking credential information, ignoring.");
+                return 0;
+        }
+
+        HASHMAP_FOREACH(t, m->transfers, i)
+                if (ucred->pid == t->pid)
+                        break;
+
+        if (!t) {
+                log_warning("Got notification datagram from unexpected peer, ignoring.");
+                return 0;
+        }
+
+        buf[n] = 0;
+
+        p = startswith(buf, "X_IMPORT_PROGRESS=");
+        if (!p) {
+                p = strstr(buf, "\nX_IMPORT_PROGRESS=");
+                if (!p)
+                        return 0;
+
+                p += 19;
+        }
+
+        e = strchrnul(p, '\n');
+        *e = 0;
+
+        r = safe_atou(p, &percent);
+        if (r < 0 || percent > 100) {
+                log_warning("Got invalid percent value, ignoring.");
+                return 0;
+        }
+
+        t->progress_percent = percent;
+
+        log_debug("Got percentage from client: %u%%", percent);
+        return 0;
+}
+
+static int manager_new(Manager **ret) {
+        _cleanup_(manager_unrefp) Manager *m = NULL;
+        static const union sockaddr_union sa = {
+                .un.sun_family = AF_UNIX,
+                .un.sun_path = "/run/systemd/import/notify",
+        };
+        static const int one = 1;
+        int r;
+
+        assert(ret);
+
+        m = new0(Manager, 1);
+        if (!m)
+                return -ENOMEM;
+
+        r = sd_event_default(&m->event);
+        if (r < 0)
+                return r;
+
+        sd_event_set_watchdog(m->event, true);
+
+        r = sd_bus_default_system(&m->bus);
+        if (r < 0)
+                return r;
+
+        m->notify_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+        if (m->notify_fd < 0)
+                return -errno;
+
+        (void) mkdir_parents_label(sa.un.sun_path, 0755);
+        (void) unlink(sa.un.sun_path);
+
+        if (bind(m->notify_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0)
+                return -errno;
+
+        if (setsockopt(m->notify_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0)
+                return -errno;
+
+        r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_on_notify, m);
+        if (r < 0)
+                return r;
+
+        *ret = m;
+        m = NULL;
+
+        return 0;
+}
+
+static Transfer *manager_find(Manager *m, TransferType type, const char *remote) {
+        Transfer *t;
+        Iterator i;
+
+        assert(m);
+        assert(type >= 0);
+        assert(type < _TRANSFER_TYPE_MAX);
+
+        HASHMAP_FOREACH(t, m->transfers, i) {
+
+                if (t->type == type &&
+                    streq_ptr(t->remote, remote))
+                        return t;
+        }
+
+        return NULL;
+}
+
+static int method_import_tar_or_raw(sd_bus_message *msg, void *userdata, sd_bus_error *error) {
+        _cleanup_(transfer_unrefp) Transfer *t = NULL;
+        int fd, force, read_only, r;
+        const char *local, *object;
+        Manager *m = userdata;
+        TransferType type;
+        uint32_t id;
+
+        assert(msg);
+        assert(m);
+
+        r = bus_verify_polkit_async(
+                        msg,
+                        CAP_SYS_ADMIN,
+                        "org.freedesktop.import1.import",
+                        NULL,
+                        false,
+                        UID_INVALID,
+                        &m->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = sd_bus_message_read(msg, "hsbb", &fd, &local, &force, &read_only);
+        if (r < 0)
+                return r;
+
+        if (!machine_name_is_valid(local))
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local);
+
+        r = setup_machine_directory((uint64_t) -1, error);
+        if (r < 0)
+                return r;
+
+        type = streq_ptr(sd_bus_message_get_member(msg), "ImportTar") ? TRANSFER_IMPORT_TAR : TRANSFER_IMPORT_RAW;
+
+        r = transfer_new(m, &t);
+        if (r < 0)
+                return r;
+
+        t->type = type;
+        t->force_local = force;
+        t->read_only = read_only;
+
+        t->local = strdup(local);
+        if (!t->local)
+                return -ENOMEM;
+
+        t->stdin_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
+        if (t->stdin_fd < 0)
+                return -errno;
+
+        r = transfer_start(t);
+        if (r < 0)
+                return r;
+
+        object = t->object_path;
+        id = t->id;
+        t = NULL;
+
+        return sd_bus_reply_method_return(msg, "uo", id, object);
+}
+
+static int method_export_tar_or_raw(sd_bus_message *msg, void *userdata, sd_bus_error *error) {
+        _cleanup_(transfer_unrefp) Transfer *t = NULL;
+        int fd, r;
+        const char *local, *object, *format;
+        Manager *m = userdata;
+        TransferType type;
+        uint32_t id;
+
+        assert(msg);
+        assert(m);
+
+        r = bus_verify_polkit_async(
+                        msg,
+                        CAP_SYS_ADMIN,
+                        "org.freedesktop.import1.export",
+                        NULL,
+                        false,
+                        UID_INVALID,
+                        &m->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = sd_bus_message_read(msg, "shs", &local, &fd, &format);
+        if (r < 0)
+                return r;
+
+        if (!machine_name_is_valid(local))
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local);
+
+        type = streq_ptr(sd_bus_message_get_member(msg), "ExportTar") ? TRANSFER_EXPORT_TAR : TRANSFER_EXPORT_RAW;
+
+        r = transfer_new(m, &t);
+        if (r < 0)
+                return r;
+
+        t->type = type;
+
+        if (!isempty(format)) {
+                t->format = strdup(format);
+                if (!t->format)
+                        return -ENOMEM;
+        }
+
+        t->local = strdup(local);
+        if (!t->local)
+                return -ENOMEM;
+
+        t->stdout_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
+        if (t->stdout_fd < 0)
+                return -errno;
+
+        r = transfer_start(t);
+        if (r < 0)
+                return r;
+
+        object = t->object_path;
+        id = t->id;
+        t = NULL;
+
+        return sd_bus_reply_method_return(msg, "uo", id, object);
+}
+
+static int method_pull_tar_or_raw(sd_bus_message *msg, void *userdata, sd_bus_error *error) {
+        _cleanup_(transfer_unrefp) Transfer *t = NULL;
+        const char *remote, *local, *verify, *object;
+        Manager *m = userdata;
+        ImportVerify v;
+        TransferType type;
+        int force, r;
+        uint32_t id;
+
+        assert(msg);
+        assert(m);
+
+        r = bus_verify_polkit_async(
+                        msg,
+                        CAP_SYS_ADMIN,
+                        "org.freedesktop.import1.pull",
+                        NULL,
+                        false,
+                        UID_INVALID,
+                        &m->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = sd_bus_message_read(msg, "sssb", &remote, &local, &verify, &force);
+        if (r < 0)
+                return r;
+
+        if (!http_url_is_valid(remote))
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "URL %s is invalid", remote);
+
+        if (isempty(local))
+                local = NULL;
+        else if (!machine_name_is_valid(local))
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local);
+
+        if (isempty(verify))
+                v = IMPORT_VERIFY_SIGNATURE;
+        else
+                v = import_verify_from_string(verify);
+        if (v < 0)
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown verification mode %s", verify);
+
+        r = setup_machine_directory((uint64_t) -1, error);
+        if (r < 0)
+                return r;
+
+        type = streq_ptr(sd_bus_message_get_member(msg), "PullTar") ? TRANSFER_PULL_TAR : TRANSFER_PULL_RAW;
+
+        if (manager_find(m, type, remote))
+                return sd_bus_error_setf(error, BUS_ERROR_TRANSFER_IN_PROGRESS, "Transfer for %s already in progress.", remote);
+
+        r = transfer_new(m, &t);
+        if (r < 0)
+                return r;
+
+        t->type = type;
+        t->verify = v;
+        t->force_local = force;
+
+        t->remote = strdup(remote);
+        if (!t->remote)
+                return -ENOMEM;
+
+        if (local) {
+                t->local = strdup(local);
+                if (!t->local)
+                        return -ENOMEM;
+        }
+
+        r = transfer_start(t);
+        if (r < 0)
+                return r;
+
+        object = t->object_path;
+        id = t->id;
+        t = NULL;
+
+        return sd_bus_reply_method_return(msg, "uo", id, object);
+}
+
+static int method_list_transfers(sd_bus_message *msg, void *userdata, sd_bus_error *error) {
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+        Manager *m = userdata;
+        Transfer *t;
+        Iterator i;
+        int r;
+
+        assert(msg);
+        assert(m);
+
+        r = sd_bus_message_new_method_return(msg, &reply);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_message_open_container(reply, 'a', "(usssdo)");
+        if (r < 0)
+                return r;
+
+        HASHMAP_FOREACH(t, m->transfers, i) {
+
+                r = sd_bus_message_append(
+                                reply,
+                                "(usssdo)",
+                                t->id,
+                                transfer_type_to_string(t->type),
+                                t->remote,
+                                t->local,
+                                (double) t->progress_percent / 100.0,
+                                t->object_path);
+                if (r < 0)
+                        return r;
+        }
+
+        r = sd_bus_message_close_container(reply);
+        if (r < 0)
+                return r;
+
+        return sd_bus_send(NULL, reply, NULL);
+}
+
+static int method_cancel(sd_bus_message *msg, void *userdata, sd_bus_error *error) {
+        Transfer *t = userdata;
+        int r;
+
+        assert(msg);
+        assert(t);
+
+        r = bus_verify_polkit_async(
+                        msg,
+                        CAP_SYS_ADMIN,
+                        "org.freedesktop.import1.pull",
+                        NULL,
+                        false,
+                        UID_INVALID,
+                        &t->manager->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = transfer_cancel(t);
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(msg, NULL);
+}
+
+static int method_cancel_transfer(sd_bus_message *msg, void *userdata, sd_bus_error *error) {
+        Manager *m = userdata;
+        Transfer *t;
+        uint32_t id;
+        int r;
+
+        assert(msg);
+        assert(m);
+
+        r = bus_verify_polkit_async(
+                        msg,
+                        CAP_SYS_ADMIN,
+                        "org.freedesktop.import1.pull",
+                        NULL,
+                        false,
+                        UID_INVALID,
+                        &m->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = sd_bus_message_read(msg, "u", &id);
+        if (r < 0)
+                return r;
+        if (id <= 0)
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid transfer id");
+
+        t = hashmap_get(m->transfers, UINT32_TO_PTR(id));
+        if (!t)
+                return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_TRANSFER, "No transfer by id %" PRIu32, id);
+
+        r = transfer_cancel(t);
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(msg, NULL);
+}
+
+static int property_get_progress(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        Transfer *t = userdata;
+
+        assert(bus);
+        assert(reply);
+        assert(t);
+
+        return sd_bus_message_append(reply, "d", (double) t->progress_percent / 100.0);
+}
+
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, transfer_type, TransferType);
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_verify, import_verify, ImportVerify);
+
+static const sd_bus_vtable transfer_vtable[] = {
+        SD_BUS_VTABLE_START(0),
+        SD_BUS_PROPERTY("Id", "u", NULL, offsetof(Transfer, id), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Local", "s", NULL, offsetof(Transfer, local), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Remote", "s", NULL, offsetof(Transfer, remote), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Transfer, type), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Verify", "s", property_get_verify, offsetof(Transfer, verify), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
+        SD_BUS_METHOD("Cancel", NULL, NULL, method_cancel, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_SIGNAL("LogMessage", "us", 0),
+        SD_BUS_VTABLE_END,
+};
+
+static const sd_bus_vtable manager_vtable[] = {
+        SD_BUS_VTABLE_START(0),
+        SD_BUS_METHOD("ImportTar", "hsbb", "uo", method_import_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("ImportRaw", "hsbb", "uo", method_import_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("ExportTar", "shs", "uo", method_export_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("ExportRaw", "shs", "uo", method_export_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("PullTar", "sssb", "uo", method_pull_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("PullRaw", "sssb", "uo", method_pull_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("ListTransfers", NULL, "a(usssdo)", method_list_transfers, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("CancelTransfer", "u", NULL, method_cancel_transfer, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_SIGNAL("TransferNew", "uo", 0),
+        SD_BUS_SIGNAL("TransferRemoved", "uos", 0),
+        SD_BUS_VTABLE_END,
+};
+
+static int transfer_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
+        Manager *m = userdata;
+        Transfer *t;
+        const char *p;
+        uint32_t id;
+        int r;
+
+        assert(bus);
+        assert(path);
+        assert(interface);
+        assert(found);
+        assert(m);
+
+        p = startswith(path, "/org/freedesktop/import1/transfer/_");
+        if (!p)
+                return 0;
+
+        r = safe_atou32(p, &id);
+        if (r < 0 || id == 0)
+                return 0;
+
+        t = hashmap_get(m->transfers, UINT32_TO_PTR(id));
+        if (!t)
+                return 0;
+
+        *found = t;
+        return 1;
+}
+
+static int transfer_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
+        _cleanup_strv_free_ char **l = NULL;
+        Manager *m = userdata;
+        Transfer *t;
+        unsigned k = 0;
+        Iterator i;
+
+        l = new0(char*, hashmap_size(m->transfers) + 1);
+        if (!l)
+                return -ENOMEM;
+
+        HASHMAP_FOREACH(t, m->transfers, i) {
+
+                l[k] = strdup(t->object_path);
+                if (!l[k])
+                        return -ENOMEM;
+
+                k++;
+        }
+
+        *nodes = l;
+        l = NULL;
+
+        return 1;
+}
+
+static int manager_add_bus_objects(Manager *m) {
+        int r;
+
+        assert(m);
+
+        r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/import1", "org.freedesktop.import1.Manager", manager_vtable, m);
+        if (r < 0)
+                return log_error_errno(r, "Failed to register object: %m");
+
+        r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/import1/transfer", "org.freedesktop.import1.Transfer", transfer_vtable, transfer_object_find, m);
+        if (r < 0)
+                return log_error_errno(r, "Failed to register object: %m");
+
+        r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/import1/transfer", transfer_node_enumerator, m);
+        if (r < 0)
+                return log_error_errno(r, "Failed to add transfer enumerator: %m");
+
+        r = sd_bus_request_name(m->bus, "org.freedesktop.import1", 0);
+        if (r < 0)
+                return log_error_errno(r, "Failed to register name: %m");
+
+        r = sd_bus_attach_event(m->bus, m->event, 0);
+        if (r < 0)
+                return log_error_errno(r, "Failed to attach bus to event loop: %m");
+
+        return 0;
+}
+
+static bool manager_check_idle(void *userdata) {
+        Manager *m = userdata;
+
+        return hashmap_isempty(m->transfers);
+}
+
+static int manager_run(Manager *m) {
+        assert(m);
+
+        return bus_event_loop_with_idle(
+                        m->event,
+                        m->bus,
+                        "org.freedesktop.import1",
+                        DEFAULT_EXIT_USEC,
+                        manager_check_idle,
+                        m);
+}
+
+int main(int argc, char *argv[]) {
+        _cleanup_(manager_unrefp) Manager *m = NULL;
+        int r;
+
+        log_set_target(LOG_TARGET_AUTO);
+        log_parse_environment();
+        log_open();
+
+        umask(0022);
+
+        if (argc != 1) {
+                log_error("This program takes no arguments.");
+                r = -EINVAL;
+                goto finish;
+        }
+
+        assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
+
+        r = manager_new(&m);
+        if (r < 0) {
+                log_error_errno(r, "Failed to allocate manager object: %m");
+                goto finish;
+        }
+
+        r = manager_add_bus_objects(m);
+        if (r < 0)
+                goto finish;
+
+        r = manager_run(m);
+        if (r < 0) {
+                log_error_errno(r, "Failed to run event loop: %m");
+                goto finish;
+        }
+
+finish:
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}