435 lines
16 KiB
C
435 lines
16 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "bus-print-properties.h"
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#include "cap-list.h"
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#include "cgroup-util.h"
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#include "escape.h"
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#include "mountpoint-util.h"
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#include "nsflags.h"
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#include "parse-util.h"
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#include "stdio-util.h"
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#include "string-util.h"
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#include "strv.h"
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#include "time-util.h"
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#include "user-util.h"
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int bus_print_property_value(const char *name, const char *expected_value, BusPrintPropertyFlags flags, const char *value) {
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assert(name);
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if (expected_value && !streq_ptr(expected_value, value))
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return 0;
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if (!FLAGS_SET(flags, BUS_PRINT_PROPERTY_SHOW_EMPTY) && isempty(value))
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return 0;
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if (FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE))
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puts(strempty(value));
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else
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printf("%s=%s\n", name, strempty(value));
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return 0;
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}
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int bus_print_property_valuef(const char *name, const char *expected_value, BusPrintPropertyFlags flags, const char *fmt, ...) {
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_cleanup_free_ char *s = NULL;
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va_list ap;
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int r;
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assert(name);
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assert(fmt);
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va_start(ap, fmt);
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r = vasprintf(&s, fmt, ap);
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va_end(ap);
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if (r < 0)
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return -ENOMEM;
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return bus_print_property_value(name, expected_value, flags, s);
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}
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static int bus_print_property(const char *name, const char *expected_value, sd_bus_message *m, BusPrintPropertyFlags flags) {
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char type;
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const char *contents;
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int r;
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assert(name);
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assert(m);
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r = sd_bus_message_peek_type(m, &type, &contents);
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if (r < 0)
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return r;
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switch (type) {
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case SD_BUS_TYPE_STRING: {
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const char *s;
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r = sd_bus_message_read_basic(m, type, &s);
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if (r < 0)
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return r;
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if (FLAGS_SET(flags, BUS_PRINT_PROPERTY_SHOW_EMPTY) || !isempty(s)) {
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bool good;
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/* This property has a single value, so we need to take
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* care not to print a new line, everything else is OK. */
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good = !strchr(s, '\n');
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bus_print_property_value(name, expected_value, flags, good ? s : "[unprintable]");
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}
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return 1;
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}
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case SD_BUS_TYPE_BOOLEAN: {
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int b;
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r = sd_bus_message_read_basic(m, type, &b);
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if (r < 0)
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return r;
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if (expected_value && parse_boolean(expected_value) != b)
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return 1;
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bus_print_property_value(name, NULL, flags, yes_no(b));
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return 1;
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}
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case SD_BUS_TYPE_UINT64: {
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uint64_t u;
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r = sd_bus_message_read_basic(m, type, &u);
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if (r < 0)
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return r;
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/* Yes, heuristics! But we can change this check
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* should it turn out to not be sufficient */
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if (endswith(name, "Timestamp") ||
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STR_IN_SET(name, "NextElapseUSecRealtime", "LastTriggerUSec", "TimeUSec", "RTCTimeUSec"))
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bus_print_property_value(name, expected_value, flags, FORMAT_TIMESTAMP(u));
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else if (strstr(name, "USec"))
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bus_print_property_value(name, expected_value, flags, FORMAT_TIMESPAN(u, 0));
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else if (streq(name, "CoredumpFilter"))
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bus_print_property_valuef(name, expected_value, flags, "0x%"PRIx64, u);
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else if (streq(name, "RestrictNamespaces")) {
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_cleanup_free_ char *s = NULL;
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const char *result;
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if ((u & NAMESPACE_FLAGS_ALL) == 0)
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result = "yes";
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else if (FLAGS_SET(u, NAMESPACE_FLAGS_ALL))
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result = "no";
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else {
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r = namespace_flags_to_string(u, &s);
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if (r < 0)
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return r;
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result = s;
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}
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bus_print_property_value(name, expected_value, flags, result);
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} else if (streq(name, "MountFlags")) {
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const char *result;
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result = mount_propagation_flags_to_string(u);
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if (!result)
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return -EINVAL;
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bus_print_property_value(name, expected_value, flags, result);
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} else if (STR_IN_SET(name, "CapabilityBoundingSet", "AmbientCapabilities")) {
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_cleanup_free_ char *s = NULL;
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r = capability_set_to_string_alloc(u, &s);
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if (r < 0)
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return r;
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bus_print_property_value(name, expected_value, flags, s);
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} else if ((STR_IN_SET(name, "CPUWeight", "StartupCPUWeight", "IOWeight", "StartupIOWeight") && u == CGROUP_WEIGHT_INVALID) ||
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(STR_IN_SET(name, "CPUShares", "StartupCPUShares") && u == CGROUP_CPU_SHARES_INVALID) ||
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(STR_IN_SET(name, "BlockIOWeight", "StartupBlockIOWeight") && u == CGROUP_BLKIO_WEIGHT_INVALID) ||
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(STR_IN_SET(name, "MemoryCurrent", "TasksCurrent") && u == UINT64_MAX) ||
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(endswith(name, "NSec") && u == UINT64_MAX))
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bus_print_property_value(name, expected_value, flags, "[not set]");
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else if ((STR_IN_SET(name, "DefaultMemoryLow", "DefaultMemoryMin", "MemoryLow", "MemoryHigh", "MemoryMax", "MemorySwapMax", "MemoryLimit", "MemoryAvailable") && u == CGROUP_LIMIT_MAX) ||
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(STR_IN_SET(name, "TasksMax", "DefaultTasksMax") && u == UINT64_MAX) ||
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(startswith(name, "Limit") && u == UINT64_MAX) ||
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(startswith(name, "DefaultLimit") && u == UINT64_MAX))
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bus_print_property_value(name, expected_value, flags, "infinity");
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else if (STR_IN_SET(name, "IPIngressBytes", "IPIngressPackets", "IPEgressBytes", "IPEgressPackets") && u == UINT64_MAX)
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bus_print_property_value(name, expected_value, flags, "[no data]");
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else
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bus_print_property_valuef(name, expected_value, flags, "%"PRIu64, u);
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return 1;
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}
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case SD_BUS_TYPE_INT64: {
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int64_t i;
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r = sd_bus_message_read_basic(m, type, &i);
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if (r < 0)
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return r;
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bus_print_property_valuef(name, expected_value, flags, "%"PRIi64, i);
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return 1;
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}
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case SD_BUS_TYPE_UINT32: {
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uint32_t u;
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r = sd_bus_message_read_basic(m, type, &u);
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if (r < 0)
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return r;
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if (strstr(name, "UMask") || strstr(name, "Mode"))
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bus_print_property_valuef(name, expected_value, flags, "%04o", u);
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else if (streq(name, "UID")) {
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if (u == UID_INVALID)
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bus_print_property_value(name, expected_value, flags, "[not set]");
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else
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bus_print_property_valuef(name, expected_value, flags, "%"PRIu32, u);
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} else if (streq(name, "GID")) {
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if (u == GID_INVALID)
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bus_print_property_value(name, expected_value, flags, "[not set]");
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else
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bus_print_property_valuef(name, expected_value, flags, "%"PRIu32, u);
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} else
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bus_print_property_valuef(name, expected_value, flags, "%"PRIu32, u);
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return 1;
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}
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case SD_BUS_TYPE_INT32: {
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int32_t i;
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r = sd_bus_message_read_basic(m, type, &i);
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if (r < 0)
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return r;
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bus_print_property_valuef(name, expected_value, flags, "%"PRIi32, i);
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return 1;
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}
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case SD_BUS_TYPE_DOUBLE: {
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double d;
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r = sd_bus_message_read_basic(m, type, &d);
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if (r < 0)
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return r;
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bus_print_property_valuef(name, expected_value, flags, "%g", d);
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return 1;
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}
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case SD_BUS_TYPE_ARRAY:
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if (streq(contents, "s")) {
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bool first = true;
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const char *str;
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r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, contents);
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if (r < 0)
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return r;
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while ((r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &str)) > 0) {
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_cleanup_free_ char *e = NULL;
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e = shell_maybe_quote(str, 0);
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if (!e)
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return -ENOMEM;
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if (first) {
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if (!FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE))
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printf("%s=", name);
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first = false;
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} else
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fputs(" ", stdout);
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fputs(e, stdout);
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}
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if (r < 0)
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return r;
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if (first && FLAGS_SET(flags, BUS_PRINT_PROPERTY_SHOW_EMPTY) && !FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE))
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printf("%s=", name);
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if (!first || FLAGS_SET(flags, BUS_PRINT_PROPERTY_SHOW_EMPTY))
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puts("");
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r = sd_bus_message_exit_container(m);
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if (r < 0)
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return r;
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return 1;
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} else if (streq(contents, "y")) {
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const uint8_t *u;
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size_t n;
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r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, (const void**) &u, &n);
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if (r < 0)
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return r;
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if (FLAGS_SET(flags, BUS_PRINT_PROPERTY_SHOW_EMPTY) || n > 0) {
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unsigned i;
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if (!FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE))
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printf("%s=", name);
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for (i = 0; i < n; i++)
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printf("%02x", u[i]);
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puts("");
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}
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return 1;
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} else if (streq(contents, "u")) {
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uint32_t *u;
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size_t n;
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r = sd_bus_message_read_array(m, SD_BUS_TYPE_UINT32, (const void**) &u, &n);
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if (r < 0)
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return r;
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if (FLAGS_SET(flags, BUS_PRINT_PROPERTY_SHOW_EMPTY) || n > 0) {
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unsigned i;
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if (!FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE))
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printf("%s=", name);
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for (i = 0; i < n; i++)
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printf("%08x", u[i]);
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puts("");
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}
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return 1;
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}
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break;
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}
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return 0;
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}
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int bus_message_print_all_properties(
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sd_bus_message *m,
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bus_message_print_t func,
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char **filter,
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BusPrintPropertyFlags flags,
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Set **found_properties) {
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int r;
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assert(m);
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r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}");
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if (r < 0)
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return r;
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while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
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_cleanup_free_ char *name_with_equal = NULL;
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const char *name, *contents, *expected_value = NULL;
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r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &name);
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if (r < 0)
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return r;
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if (found_properties) {
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r = set_ensure_put(found_properties, &string_hash_ops, name);
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if (r < 0)
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return log_oom();
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}
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name_with_equal = strjoin(name, "=");
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if (!name_with_equal)
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return log_oom();
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if (!filter || strv_find(filter, name) ||
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(expected_value = strv_find_startswith(filter, name_with_equal))) {
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r = sd_bus_message_peek_type(m, NULL, &contents);
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if (r < 0)
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return r;
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r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
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if (r < 0)
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return r;
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if (func)
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r = func(name, expected_value, m, flags);
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if (!func || r == 0)
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r = bus_print_property(name, expected_value, m, flags);
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if (r < 0)
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return r;
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if (r == 0) {
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if (FLAGS_SET(flags, BUS_PRINT_PROPERTY_SHOW_EMPTY) && !expected_value)
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printf("%s=[unprintable]\n", name);
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/* skip what we didn't read */
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r = sd_bus_message_skip(m, contents);
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if (r < 0)
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return r;
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}
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r = sd_bus_message_exit_container(m);
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if (r < 0)
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return r;
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} else {
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r = sd_bus_message_skip(m, "v");
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if (r < 0)
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return r;
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}
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r = sd_bus_message_exit_container(m);
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if (r < 0)
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return r;
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}
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if (r < 0)
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return r;
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r = sd_bus_message_exit_container(m);
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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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int bus_print_all_properties(
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sd_bus *bus,
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const char *dest,
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const char *path,
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bus_message_print_t func,
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char **filter,
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BusPrintPropertyFlags flags,
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Set **found_properties) {
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_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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int r;
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assert(bus);
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assert(path);
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r = sd_bus_call_method(bus,
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dest,
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path,
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"org.freedesktop.DBus.Properties",
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"GetAll",
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&error,
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&reply,
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"s", "");
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if (r < 0)
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return r;
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return bus_message_print_all_properties(reply, func, filter, flags, found_properties);
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}
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