1254 lines
36 KiB
C
1254 lines
36 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <sys/prctl.h>
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#include <sys/wait.h>
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#include "sd-bus.h"
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#include "alloc-util.h"
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#include "bus-common-errors.h"
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#include "bus-util.h"
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#include "def.h"
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#include "fd-util.h"
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#include "float.h"
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#include "hostname-util.h"
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#include "import-util.h"
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#include "machine-pool.h"
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#include "main-func.h"
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#include "missing.h"
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#include "mkdir.h"
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#include "parse-util.h"
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#include "path-util.h"
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#include "process-util.h"
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#include "signal-util.h"
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#include "socket-util.h"
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#include "string-table.h"
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#include "strv.h"
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#include "syslog-util.h"
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#include "user-util.h"
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#include "util.h"
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#include "web-util.h"
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typedef struct Transfer Transfer;
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typedef struct Manager Manager;
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typedef enum TransferType {
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TRANSFER_IMPORT_TAR,
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TRANSFER_IMPORT_RAW,
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TRANSFER_IMPORT_FS,
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TRANSFER_EXPORT_TAR,
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TRANSFER_EXPORT_RAW,
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TRANSFER_PULL_TAR,
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TRANSFER_PULL_RAW,
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_TRANSFER_TYPE_MAX,
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_TRANSFER_TYPE_INVALID = -1,
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} TransferType;
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struct Transfer {
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Manager *manager;
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uint32_t id;
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char *object_path;
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TransferType type;
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ImportVerify verify;
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char *remote;
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char *local;
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bool force_local;
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bool read_only;
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char *format;
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pid_t pid;
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int log_fd;
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char log_message[LINE_MAX];
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size_t log_message_size;
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sd_event_source *pid_event_source;
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sd_event_source *log_event_source;
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unsigned n_canceled;
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unsigned progress_percent;
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int stdin_fd;
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int stdout_fd;
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};
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struct Manager {
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sd_event *event;
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sd_bus *bus;
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uint32_t current_transfer_id;
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Hashmap *transfers;
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Hashmap *polkit_registry;
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int notify_fd;
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sd_event_source *notify_event_source;
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};
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#define TRANSFERS_MAX 64
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static const char* const transfer_type_table[_TRANSFER_TYPE_MAX] = {
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[TRANSFER_IMPORT_TAR] = "import-tar",
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[TRANSFER_IMPORT_RAW] = "import-raw",
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[TRANSFER_IMPORT_FS] = "import-fs",
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[TRANSFER_EXPORT_TAR] = "export-tar",
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[TRANSFER_EXPORT_RAW] = "export-raw",
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[TRANSFER_PULL_TAR] = "pull-tar",
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[TRANSFER_PULL_RAW] = "pull-raw",
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};
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DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(transfer_type, TransferType);
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static Transfer *transfer_unref(Transfer *t) {
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if (!t)
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return NULL;
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if (t->manager)
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hashmap_remove(t->manager->transfers, UINT32_TO_PTR(t->id));
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sd_event_source_unref(t->pid_event_source);
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sd_event_source_unref(t->log_event_source);
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free(t->remote);
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free(t->local);
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free(t->format);
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free(t->object_path);
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if (t->pid > 0) {
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(void) kill_and_sigcont(t->pid, SIGKILL);
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(void) wait_for_terminate(t->pid, NULL);
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}
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safe_close(t->log_fd);
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safe_close(t->stdin_fd);
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safe_close(t->stdout_fd);
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return mfree(t);
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}
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DEFINE_TRIVIAL_CLEANUP_FUNC(Transfer*, transfer_unref);
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static int transfer_new(Manager *m, Transfer **ret) {
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_cleanup_(transfer_unrefp) Transfer *t = NULL;
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uint32_t id;
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int r;
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assert(m);
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assert(ret);
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if (hashmap_size(m->transfers) >= TRANSFERS_MAX)
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return -E2BIG;
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r = hashmap_ensure_allocated(&m->transfers, &trivial_hash_ops);
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if (r < 0)
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return r;
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t = new(Transfer, 1);
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if (!t)
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return -ENOMEM;
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*t = (Transfer) {
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.type = _TRANSFER_TYPE_INVALID,
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.log_fd = -1,
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.stdin_fd = -1,
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.stdout_fd = -1,
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.verify = _IMPORT_VERIFY_INVALID,
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.progress_percent= (unsigned) -1,
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};
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id = m->current_transfer_id + 1;
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if (asprintf(&t->object_path, "/org/freedesktop/import1/transfer/_%" PRIu32, id) < 0)
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return -ENOMEM;
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r = hashmap_put(m->transfers, UINT32_TO_PTR(id), t);
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if (r < 0)
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return r;
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m->current_transfer_id = id;
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t->manager = m;
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t->id = id;
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*ret = TAKE_PTR(t);
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return 0;
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}
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static double transfer_percent_as_double(Transfer *t) {
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assert(t);
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if (t->progress_percent == (unsigned) -1)
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return -DBL_MAX;
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return (double) t->progress_percent / 100.0;
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}
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static void transfer_send_log_line(Transfer *t, const char *line) {
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int r, priority = LOG_INFO;
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assert(t);
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assert(line);
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syslog_parse_priority(&line, &priority, true);
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log_full(priority, "(transfer%" PRIu32 ") %s", t->id, line);
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r = sd_bus_emit_signal(
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t->manager->bus,
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t->object_path,
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"org.freedesktop.import1.Transfer",
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"LogMessage",
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"us",
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priority,
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line);
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if (r < 0)
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log_warning_errno(r, "Cannot emit log message signal, ignoring: %m");
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}
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static void transfer_send_logs(Transfer *t, bool flush) {
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assert(t);
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/* Try to send out all log messages, if we can. But if we
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* can't we remove the messages from the buffer, but don't
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* fail */
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while (t->log_message_size > 0) {
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_cleanup_free_ char *n = NULL;
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char *e;
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if (t->log_message_size >= sizeof(t->log_message))
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e = t->log_message + sizeof(t->log_message);
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else {
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char *a, *b;
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a = memchr(t->log_message, 0, t->log_message_size);
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b = memchr(t->log_message, '\n', t->log_message_size);
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if (a && b)
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e = a < b ? a : b;
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else if (a)
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e = a;
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else
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e = b;
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}
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if (!e) {
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if (!flush)
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return;
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e = t->log_message + t->log_message_size;
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}
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n = strndup(t->log_message, e - t->log_message);
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/* Skip over NUL and newlines */
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while (e < t->log_message + t->log_message_size && (*e == 0 || *e == '\n'))
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e++;
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memmove(t->log_message, e, t->log_message + sizeof(t->log_message) - e);
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t->log_message_size -= e - t->log_message;
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if (!n) {
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log_oom();
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continue;
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}
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if (isempty(n))
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continue;
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transfer_send_log_line(t, n);
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}
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}
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static int transfer_finalize(Transfer *t, bool success) {
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int r;
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assert(t);
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transfer_send_logs(t, true);
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r = sd_bus_emit_signal(
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t->manager->bus,
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"/org/freedesktop/import1",
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"org.freedesktop.import1.Manager",
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"TransferRemoved",
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"uos",
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t->id,
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t->object_path,
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success ? "done" :
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t->n_canceled > 0 ? "canceled" : "failed");
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if (r < 0)
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log_error_errno(r, "Cannot emit message: %m");
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transfer_unref(t);
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return 0;
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}
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static int transfer_cancel(Transfer *t) {
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int r;
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assert(t);
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r = kill_and_sigcont(t->pid, t->n_canceled < 3 ? SIGTERM : SIGKILL);
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if (r < 0)
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return r;
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t->n_canceled++;
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return 0;
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}
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static int transfer_on_pid(sd_event_source *s, const siginfo_t *si, void *userdata) {
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Transfer *t = userdata;
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bool success = false;
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assert(s);
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assert(t);
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if (si->si_code == CLD_EXITED) {
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if (si->si_status != 0)
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log_error("Transfer process failed with exit code %i.", si->si_status);
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else {
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log_debug("Transfer process succeeded.");
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success = true;
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}
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} else if (IN_SET(si->si_code, CLD_KILLED, CLD_DUMPED))
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log_error("Transfer process terminated by signal %s.", signal_to_string(si->si_status));
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else
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log_error("Transfer process failed due to unknown reason.");
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t->pid = 0;
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return transfer_finalize(t, success);
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}
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static int transfer_on_log(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
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Transfer *t = userdata;
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ssize_t l;
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assert(s);
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assert(t);
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l = read(fd, t->log_message + t->log_message_size, sizeof(t->log_message) - t->log_message_size);
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if (l < 0)
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log_error_errno(errno, "Failed to read log message: %m");
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if (l <= 0) {
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/* EOF/read error. We just close the pipe here, and
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* close the watch, waiting for the SIGCHLD to arrive,
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* before we do anything else. */
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t->log_event_source = sd_event_source_unref(t->log_event_source);
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return 0;
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}
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t->log_message_size += l;
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transfer_send_logs(t, false);
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return 0;
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}
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static int transfer_start(Transfer *t) {
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_cleanup_close_pair_ int pipefd[2] = { -1, -1 };
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int r;
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assert(t);
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assert(t->pid <= 0);
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if (pipe2(pipefd, O_CLOEXEC) < 0)
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return -errno;
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r = safe_fork("(sd-transfer)", FORK_RESET_SIGNALS|FORK_DEATHSIG, &t->pid);
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if (r < 0)
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return r;
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if (r == 0) {
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const char *cmd[] = {
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NULL, /* systemd-import, systemd-import-fs, systemd-export or systemd-pull */
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NULL, /* tar, raw */
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NULL, /* --verify= */
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NULL, /* verify argument */
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NULL, /* maybe --force */
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NULL, /* maybe --read-only */
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NULL, /* if so: the actual URL */
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NULL, /* maybe --format= */
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NULL, /* if so: the actual format */
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NULL, /* remote */
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NULL, /* local */
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NULL
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};
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unsigned k = 0;
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/* Child */
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pipefd[0] = safe_close(pipefd[0]);
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r = rearrange_stdio(t->stdin_fd,
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t->stdout_fd < 0 ? pipefd[1] : t->stdout_fd,
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pipefd[1]);
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if (r < 0) {
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log_error_errno(r, "Failed to set stdin/stdout/stderr: %m");
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_exit(EXIT_FAILURE);
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}
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if (setenv("SYSTEMD_LOG_TARGET", "console-prefixed", 1) < 0 ||
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setenv("NOTIFY_SOCKET", "/run/systemd/import/notify", 1) < 0) {
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log_error_errno(errno, "setenv() failed: %m");
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_exit(EXIT_FAILURE);
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}
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switch (t->type) {
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case TRANSFER_IMPORT_TAR:
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case TRANSFER_IMPORT_RAW:
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cmd[k++] = SYSTEMD_IMPORT_PATH;
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break;
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case TRANSFER_IMPORT_FS:
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cmd[k++] = SYSTEMD_IMPORT_FS_PATH;
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break;
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case TRANSFER_EXPORT_TAR:
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case TRANSFER_EXPORT_RAW:
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cmd[k++] = SYSTEMD_EXPORT_PATH;
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break;
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case TRANSFER_PULL_TAR:
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case TRANSFER_PULL_RAW:
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cmd[k++] = SYSTEMD_PULL_PATH;
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break;
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default:
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assert_not_reached("Unexpected transfer type");
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}
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switch (t->type) {
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case TRANSFER_IMPORT_TAR:
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case TRANSFER_EXPORT_TAR:
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case TRANSFER_PULL_TAR:
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cmd[k++] = "tar";
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break;
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case TRANSFER_IMPORT_RAW:
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case TRANSFER_EXPORT_RAW:
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case TRANSFER_PULL_RAW:
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cmd[k++] = "raw";
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break;
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case TRANSFER_IMPORT_FS:
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cmd[k++] = "run";
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break;
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default:
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break;
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}
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if (t->verify != _IMPORT_VERIFY_INVALID) {
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cmd[k++] = "--verify";
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cmd[k++] = import_verify_to_string(t->verify);
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}
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if (t->force_local)
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cmd[k++] = "--force";
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if (t->read_only)
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cmd[k++] = "--read-only";
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if (t->format) {
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cmd[k++] = "--format";
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cmd[k++] = t->format;
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}
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if (!IN_SET(t->type, TRANSFER_EXPORT_TAR, TRANSFER_EXPORT_RAW)) {
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if (t->remote)
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cmd[k++] = t->remote;
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else
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cmd[k++] = "-";
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}
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if (t->local)
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cmd[k++] = t->local;
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cmd[k] = NULL;
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execv(cmd[0], (char * const *) cmd);
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log_error_errno(errno, "Failed to execute %s tool: %m", cmd[0]);
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_exit(EXIT_FAILURE);
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}
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pipefd[1] = safe_close(pipefd[1]);
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t->log_fd = TAKE_FD(pipefd[0]);
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t->stdin_fd = safe_close(t->stdin_fd);
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r = sd_event_add_child(t->manager->event, &t->pid_event_source, t->pid, WEXITED, transfer_on_pid, t);
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if (r < 0)
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return r;
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r = sd_event_add_io(t->manager->event, &t->log_event_source, t->log_fd, EPOLLIN, transfer_on_log, t);
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if (r < 0)
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return r;
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/* Make sure always process logging before SIGCHLD */
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r = sd_event_source_set_priority(t->log_event_source, SD_EVENT_PRIORITY_NORMAL -5);
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if (r < 0)
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return r;
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r = sd_bus_emit_signal(
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t->manager->bus,
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"/org/freedesktop/import1",
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"org.freedesktop.import1.Manager",
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"TransferNew",
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"uo",
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t->id,
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t->object_path);
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if (r < 0)
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return r;
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return 0;
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}
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static Manager *manager_unref(Manager *m) {
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Transfer *t;
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if (!m)
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return NULL;
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sd_event_source_unref(m->notify_event_source);
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safe_close(m->notify_fd);
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while ((t = hashmap_first(m->transfers)))
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transfer_unref(t);
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hashmap_free(m->transfers);
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bus_verify_polkit_async_registry_free(m->polkit_registry);
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m->bus = sd_bus_flush_close_unref(m->bus);
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sd_event_unref(m->event);
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return mfree(m);
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}
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref);
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static int manager_on_notify(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
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char buf[NOTIFY_BUFFER_MAX+1];
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struct iovec iovec = {
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.iov_base = buf,
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.iov_len = sizeof(buf)-1,
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};
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union {
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struct cmsghdr cmsghdr;
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uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
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CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
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} control = {};
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struct msghdr msghdr = {
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.msg_iov = &iovec,
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.msg_iovlen = 1,
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.msg_control = &control,
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.msg_controllen = sizeof(control),
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};
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struct ucred *ucred = NULL;
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Manager *m = userdata;
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struct cmsghdr *cmsg;
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char *p, *e;
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Transfer *t;
|
|
Iterator i;
|
|
ssize_t n;
|
|
int r;
|
|
|
|
n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
|
|
if (n < 0) {
|
|
if (IN_SET(errno, EAGAIN, 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 = parse_percent(p);
|
|
if (r < 0) {
|
|
log_warning("Got invalid percent value, ignoring.");
|
|
return 0;
|
|
}
|
|
|
|
t->progress_percent = (unsigned) r;
|
|
|
|
log_debug("Got percentage from client: %u%%", t->progress_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",
|
|
};
|
|
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) sockaddr_un_unlink(&sa.un);
|
|
|
|
if (bind(m->notify_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0)
|
|
return -errno;
|
|
|
|
r = setsockopt_int(m->notify_fd, SOL_SOCKET, SO_PASSCRED, true);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
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 = TAKE_PTR(m);
|
|
|
|
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(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_import_fs(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;
|
|
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(error);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = transfer_new(m, &t);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
t->type = TRANSFER_IMPORT_FS;
|
|
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(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,
|
|
transfer_percent_as_double(t),
|
|
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", transfer_percent_as_double(t));
|
|
}
|
|
|
|
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("ImportFileSystem", "hsbb", "uo", method_import_fs, 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 = TAKE_PTR(l);
|
|
|
|
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_async(m->bus, NULL, "org.freedesktop.import1", 0, NULL, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to request 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);
|
|
}
|
|
|
|
static int run(int argc, char *argv[]) {
|
|
_cleanup_(manager_unrefp) Manager *m = NULL;
|
|
int r;
|
|
|
|
log_setup_service();
|
|
|
|
umask(0022);
|
|
|
|
if (argc != 1) {
|
|
log_error("This program takes no arguments.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
|
|
|
|
r = manager_new(&m);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to allocate manager object: %m");
|
|
|
|
r = manager_add_bus_objects(m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = manager_run(m);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to run event loop: %m");
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_MAIN_FUNCTION(run);
|