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-rw-r--r--src/grp-import/importd.c1221
1 files changed, 1221 insertions, 0 deletions
diff --git a/src/grp-import/importd.c b/src/grp-import/importd.c
new file mode 100644
index 0000000000..e30dfdf805
--- /dev/null
+++ b/src/grp-import/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;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-03 14:26:30 +0000