diff options
Diffstat (limited to 'src/import/importd.c')
| -rw-r--r-- | src/import/importd.c | 1217 |
1 files changed, 0 insertions, 1217 deletions
diff --git a/src/import/importd.c b/src/import/importd.c deleted file mode 100644 index 9d31a956a5..0000000000 --- a/src/import/importd.c +++ /dev/null @@ -1,1217 +0,0 @@ -/*** - 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 "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); - - return mfree(t); -} - -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); - } - - stdio_unset_cloexec(); - - 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); - - return mfree(m); -} - -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; -} |