1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2013 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
23 #include "capability.h"
28 #include "bus-message.h"
29 #include "bus-internal.h"
33 static char *indent(unsigned level, unsigned flags) {
39 if (flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY && level > 0)
42 if (flags & BUS_MESSAGE_DUMP_WITH_HEADER)
45 p = new(char, n + level*8 + 1);
49 if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) {
54 memset(p + i, ' ', level*8);
60 int bus_message_dump(sd_bus_message *m, FILE *f, unsigned flags) {
69 if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) {
71 "%s%s%s Type=%s%s%s Endian=%c Flags=%u Version=%u Priority=%lli",
72 m->header->type == SD_BUS_MESSAGE_METHOD_ERROR ? ansi_highlight_red() :
73 m->header->type == SD_BUS_MESSAGE_METHOD_RETURN ? ansi_highlight_green() :
74 m->header->type != SD_BUS_MESSAGE_SIGNAL ? ansi_highlight() : "", draw_special_char(DRAW_TRIANGULAR_BULLET), ansi_highlight_off(),
75 ansi_highlight(), bus_message_type_to_string(m->header->type), ansi_highlight_off(),
79 (long long) m->priority);
81 /* Display synthetic message serial number in a more readable
82 * format than (uint32_t) -1 */
83 if (BUS_MESSAGE_COOKIE(m) == 0xFFFFFFFFULL)
84 fprintf(f, " Cookie=-1");
86 fprintf(f, " Cookie=%" PRIu64, BUS_MESSAGE_COOKIE(m));
88 if (m->reply_cookie != 0)
89 fprintf(f, " ReplyCookie=%" PRIu64, m->reply_cookie);
94 fprintf(f, " Sender=%s%s%s", ansi_highlight(), m->sender, ansi_highlight_off());
96 fprintf(f, " Destination=%s%s%s", ansi_highlight(), m->destination, ansi_highlight_off());
98 fprintf(f, " Path=%s%s%s", ansi_highlight(), m->path, ansi_highlight_off());
100 fprintf(f, " Interface=%s%s%s", ansi_highlight(), m->interface, ansi_highlight_off());
102 fprintf(f, " Member=%s%s%s", ansi_highlight(), m->member, ansi_highlight_off());
104 if (m->sender || m->destination || m->path || m->interface || m->member)
107 if (sd_bus_error_is_set(&m->error))
110 " ErrorMessage=%s\"%s\"%s\n",
111 ansi_highlight_red(), strna(m->error.name), ansi_highlight_off(),
112 ansi_highlight_red(), strna(m->error.message), ansi_highlight_off());
114 if (m->monotonic != 0)
115 fprintf(f, " Monotonic="USEC_FMT, m->monotonic);
116 if (m->realtime != 0)
117 fprintf(f, " Realtime="USEC_FMT, m->realtime);
119 fprintf(f, " SequenceNumber=%"PRIu64, m->seqnum);
121 if (m->monotonic != 0 || m->realtime != 0 || m->seqnum != 0)
124 bus_creds_dump(&m->creds, f);
127 r = sd_bus_message_rewind(m, !(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY));
129 log_error("Failed to rewind: %s", strerror(-r));
133 if (!(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY))
134 fprintf(f, "%sMESSAGE \"%s\" {\n", indent(0, flags), strempty(m->root_container.signature));
137 _cleanup_free_ char *prefix = NULL;
138 const char *contents = NULL;
153 r = sd_bus_message_peek_type(m, &type, &contents);
155 log_error("Failed to peek type: %s", strerror(-r));
163 r = sd_bus_message_exit_container(m);
165 log_error("Failed to exit container: %s", strerror(-r));
171 prefix = indent(level, flags);
175 fprintf(f, "%s};\n", prefix);
179 prefix = indent(level, flags);
183 if (bus_type_is_container(type) > 0) {
184 r = sd_bus_message_enter_container(m, type, contents);
186 log_error("Failed to enter container: %s", strerror(-r));
190 if (type == SD_BUS_TYPE_ARRAY)
191 fprintf(f, "%sARRAY \"%s\" {\n", prefix, contents);
192 else if (type == SD_BUS_TYPE_VARIANT)
193 fprintf(f, "%sVARIANT \"%s\" {\n", prefix, contents);
194 else if (type == SD_BUS_TYPE_STRUCT)
195 fprintf(f, "%sSTRUCT \"%s\" {\n", prefix, contents);
196 else if (type == SD_BUS_TYPE_DICT_ENTRY)
197 fprintf(f, "%sDICT_ENTRY \"%s\" {\n", prefix, contents);
204 r = sd_bus_message_read_basic(m, type, &basic);
206 log_error("Failed to get basic: %s", strerror(-r));
214 case SD_BUS_TYPE_BYTE:
215 fprintf(f, "%sBYTE %s%u%s;\n", prefix, ansi_highlight(), basic.u8, ansi_highlight_off());
218 case SD_BUS_TYPE_BOOLEAN:
219 fprintf(f, "%sBOOLEAN %s%s%s;\n", prefix, ansi_highlight(), true_false(basic.i), ansi_highlight_off());
222 case SD_BUS_TYPE_INT16:
223 fprintf(f, "%sINT16 %s%i%s;\n", prefix, ansi_highlight(), basic.s16, ansi_highlight_off());
226 case SD_BUS_TYPE_UINT16:
227 fprintf(f, "%sUINT16 %s%u%s;\n", prefix, ansi_highlight(), basic.u16, ansi_highlight_off());
230 case SD_BUS_TYPE_INT32:
231 fprintf(f, "%sINT32 %s%i%s;\n", prefix, ansi_highlight(), basic.s32, ansi_highlight_off());
234 case SD_BUS_TYPE_UINT32:
235 fprintf(f, "%sUINT32 %s%u%s;\n", prefix, ansi_highlight(), basic.u32, ansi_highlight_off());
238 case SD_BUS_TYPE_INT64:
239 fprintf(f, "%sINT64 %s%"PRIi64"%s;\n", prefix, ansi_highlight(), basic.s64, ansi_highlight_off());
242 case SD_BUS_TYPE_UINT64:
243 fprintf(f, "%sUINT64 %s%"PRIu64"%s;\n", prefix, ansi_highlight(), basic.u64, ansi_highlight_off());
246 case SD_BUS_TYPE_DOUBLE:
247 fprintf(f, "%sDOUBLE %s%g%s;\n", prefix, ansi_highlight(), basic.d64, ansi_highlight_off());
250 case SD_BUS_TYPE_STRING:
251 fprintf(f, "%sSTRING \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_highlight_off());
254 case SD_BUS_TYPE_OBJECT_PATH:
255 fprintf(f, "%sOBJECT_PATH \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_highlight_off());
258 case SD_BUS_TYPE_SIGNATURE:
259 fprintf(f, "%sSIGNATURE \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_highlight_off());
262 case SD_BUS_TYPE_UNIX_FD:
263 fprintf(f, "%sUNIX_FD %s%i%s;\n", prefix, ansi_highlight(), basic.i, ansi_highlight_off());
267 assert_not_reached("Unknown basic type.");
271 if (!(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY))
272 fprintf(f, "%s};\n\n", indent(0, flags));
277 static void dump_capabilities(
281 int (*has)(sd_bus_creds *c, int capability)) {
283 unsigned long i, last_cap;
297 fprintf(f, " %s=", name);
298 last_cap = cap_last_cap();
302 _cleanup_cap_free_charp_ char *t;
325 int bus_creds_dump(sd_bus_creds *c, FILE *f) {
326 bool audit_sessionid_is_set = false, audit_loginuid_is_set = false;
327 const char *u = NULL, *uu = NULL, *s = NULL, *sl = NULL;
328 uid_t owner, audit_loginuid;
329 uint32_t audit_sessionid;
330 char **cmdline = NULL, **well_known = NULL;
338 if (c->mask & SD_BUS_CREDS_PID)
339 fprintf(f, " PID="PID_FMT, c->pid);
340 if (c->mask & SD_BUS_CREDS_PID_STARTTIME)
341 fprintf(f, " PIDStartTime="USEC_FMT, c->pid_starttime);
342 if (c->mask & SD_BUS_CREDS_TID)
343 fprintf(f, " TID="PID_FMT, c->tid);
344 if (c->mask & SD_BUS_CREDS_UID)
345 fprintf(f, " UID="UID_FMT, c->uid);
346 r = sd_bus_creds_get_owner_uid(c, &owner);
348 fprintf(f, " OwnerUID="UID_FMT, owner);
349 if (c->mask & SD_BUS_CREDS_GID)
350 fprintf(f, " GID="GID_FMT, c->gid);
352 if ((c->mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_PID_STARTTIME|SD_BUS_CREDS_TID|SD_BUS_CREDS_UID|SD_BUS_CREDS_GID)) || r >= 0)
355 if (c->mask & SD_BUS_CREDS_EXE)
356 fprintf(f, " Exe=%s", c->exe);
357 if (c->mask & SD_BUS_CREDS_COMM)
358 fprintf(f, " Comm=%s", c->comm);
359 if (c->mask & SD_BUS_CREDS_TID_COMM)
360 fprintf(f, " TIDComm=%s", c->tid_comm);
362 if (c->mask & (SD_BUS_CREDS_EXE|SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM))
365 if (c->mask & SD_BUS_CREDS_SELINUX_CONTEXT)
366 fprintf(f, " Label=%s", c->label);
367 if (c->mask & SD_BUS_CREDS_DESCRIPTION)
368 fprintf(f, " Description=%s", c->description);
370 if (c->mask & (SD_BUS_CREDS_SELINUX_CONTEXT|SD_BUS_CREDS_DESCRIPTION))
373 if (sd_bus_creds_get_cmdline(c, &cmdline) >= 0) {
376 fputs(" CommandLine={", f);
377 STRV_FOREACH(i, cmdline) {
387 if (c->mask & SD_BUS_CREDS_CGROUP)
388 fprintf(f, " CGroup=%s", c->cgroup);
389 sd_bus_creds_get_unit(c, &u);
391 fprintf(f, " Unit=%s", u);
392 sd_bus_creds_get_user_unit(c, &uu);
394 fprintf(f, " UserUnit=%s", uu);
395 sd_bus_creds_get_slice(c, &sl);
397 fprintf(f, " Slice=%s", sl);
398 sd_bus_creds_get_session(c, &s);
400 fprintf(f, " Session=%s", s);
402 if ((c->mask & SD_BUS_CREDS_CGROUP) || u || uu || sl || s)
405 if (sd_bus_creds_get_audit_login_uid(c, &audit_loginuid) >= 0) {
406 audit_loginuid_is_set = true;
407 fprintf(f, " AuditLoginUID="UID_FMT, audit_loginuid);
409 if (sd_bus_creds_get_audit_session_id(c, &audit_sessionid) >= 0) {
410 audit_sessionid_is_set = true;
411 fprintf(f, " AuditSessionID=%"PRIu32, audit_sessionid);
414 if (audit_loginuid_is_set || audit_sessionid_is_set)
417 if (c->mask & SD_BUS_CREDS_UNIQUE_NAME)
418 fprintf(f, " UniqueName=%s", c->unique_name);
420 if (sd_bus_creds_get_well_known_names(c, &well_known) >= 0) {
423 fputs(" WellKnownNames={", f);
424 STRV_FOREACH(i, well_known) {
434 if (c->mask & SD_BUS_CREDS_UNIQUE_NAME || well_known)
437 dump_capabilities(c, f, "EffectiveCapabilities", sd_bus_creds_has_effective_cap);
438 dump_capabilities(c, f, "PermittedCapabilities", sd_bus_creds_has_permitted_cap);
439 dump_capabilities(c, f, "InheritableCapabilities", sd_bus_creds_has_inheritable_cap);
440 dump_capabilities(c, f, "BoundingCapabilities", sd_bus_creds_has_bounding_cap);
446 * For details about the file format, see:
448 * http://wiki.wireshark.org/Development/LibpcapFileFormat
451 typedef struct _packed_ pcap_hdr_s {
452 uint32_t magic_number; /* magic number */
453 uint16_t version_major; /* major version number */
454 uint16_t version_minor; /* minor version number */
455 int32_t thiszone; /* GMT to local correction */
456 uint32_t sigfigs; /* accuracy of timestamps */
457 uint32_t snaplen; /* max length of captured packets, in octets */
458 uint32_t network; /* data link type */
461 typedef struct _packed_ pcaprec_hdr_s {
462 uint32_t ts_sec; /* timestamp seconds */
463 uint32_t ts_usec; /* timestamp microseconds */
464 uint32_t incl_len; /* number of octets of packet saved in file */
465 uint32_t orig_len; /* actual length of packet */
468 int bus_pcap_header(size_t snaplen, FILE *f) {
471 .magic_number = 0xa1b2c3d4U,
474 .thiszone = 0, /* UTC */
476 .network = 231, /* D-Bus */
483 assert((size_t) (uint32_t) snaplen == snaplen);
485 hdr.snaplen = (uint32_t) snaplen;
487 fwrite(&hdr, 1, sizeof(hdr), f);
493 int bus_message_pcap_frame(sd_bus_message *m, size_t snaplen, FILE *f) {
494 struct bus_body_part *part;
495 pcaprec_hdr_t hdr = {};
505 assert((size_t) (uint32_t) snaplen == snaplen);
507 if (m->realtime != 0)
508 timeval_store(&tv, m->realtime);
510 assert_se(gettimeofday(&tv, NULL) >= 0);
512 hdr.ts_sec = tv.tv_sec;
513 hdr.ts_usec = tv.tv_usec;
514 hdr.orig_len = BUS_MESSAGE_SIZE(m);
515 hdr.incl_len = MIN(hdr.orig_len, snaplen);
517 /* write the pcap header */
518 fwrite(&hdr, 1, sizeof(hdr), f);
520 /* write the dbus header */
521 w = MIN(BUS_MESSAGE_BODY_BEGIN(m), snaplen);
522 fwrite(m->header, 1, w, f);
525 /* write the dbus body */
526 MESSAGE_FOREACH_PART(part, i, m) {
530 w = MIN(part->size, snaplen);
531 fwrite(part->data, 1, w, f);