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|
/***
This file is part of systemd.
Copyright 2013 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 "basic/alloc-util.h"
#include "basic/cap-list.h"
#include "basic/capability-util.h"
#include "basic/fileio.h"
#include "basic/formats-util.h"
#include "basic/locale-util.h"
#include "basic/macro.h"
#include "basic/string-util.h"
#include "basic/strv.h"
#include "basic/terminal-util.h"
#include "basic/util.h"
#include "bus-dump.h"
#include "bus-internal.h"
#include "bus-message.h"
#include "bus-type.h"
static char *indent(unsigned level, unsigned flags) {
char *p;
unsigned n, i = 0;
n = 0;
if (flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY && level > 0)
level -= 1;
if (flags & BUS_MESSAGE_DUMP_WITH_HEADER)
n += 2;
p = new(char, n + level*8 + 1);
if (!p)
return NULL;
if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) {
p[i++] = ' ';
p[i++] = ' ';
}
memset(p + i, ' ', level*8);
p[i + level*8] = 0;
return p;
}
int bus_message_dump(sd_bus_message *m, FILE *f, unsigned flags) {
unsigned level = 1;
int r;
assert(m);
if (!f)
f = stdout;
if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) {
fprintf(f,
"%s%s%s Type=%s%s%s Endian=%c Flags=%u Version=%u Priority=%"PRIi64,
m->header->type == SD_BUS_MESSAGE_METHOD_ERROR ? ansi_highlight_red() :
m->header->type == SD_BUS_MESSAGE_METHOD_RETURN ? ansi_highlight_green() :
m->header->type != SD_BUS_MESSAGE_SIGNAL ? ansi_highlight() : "", special_glyph(TRIANGULAR_BULLET), ansi_normal(),
ansi_highlight(), bus_message_type_to_string(m->header->type), ansi_normal(),
m->header->endian,
m->header->flags,
m->header->version,
m->priority);
/* Display synthetic message serial number in a more readable
* format than (uint32_t) -1 */
if (BUS_MESSAGE_COOKIE(m) == 0xFFFFFFFFULL)
fprintf(f, " Cookie=-1");
else
fprintf(f, " Cookie=%" PRIu64, BUS_MESSAGE_COOKIE(m));
if (m->reply_cookie != 0)
fprintf(f, " ReplyCookie=%" PRIu64, m->reply_cookie);
fputs("\n", f);
if (m->sender)
fprintf(f, " Sender=%s%s%s", ansi_highlight(), m->sender, ansi_normal());
if (m->destination)
fprintf(f, " Destination=%s%s%s", ansi_highlight(), m->destination, ansi_normal());
if (m->path)
fprintf(f, " Path=%s%s%s", ansi_highlight(), m->path, ansi_normal());
if (m->interface)
fprintf(f, " Interface=%s%s%s", ansi_highlight(), m->interface, ansi_normal());
if (m->member)
fprintf(f, " Member=%s%s%s", ansi_highlight(), m->member, ansi_normal());
if (m->sender || m->destination || m->path || m->interface || m->member)
fputs("\n", f);
if (sd_bus_error_is_set(&m->error))
fprintf(f,
" ErrorName=%s%s%s"
" ErrorMessage=%s\"%s\"%s\n",
ansi_highlight_red(), strna(m->error.name), ansi_normal(),
ansi_highlight_red(), strna(m->error.message), ansi_normal());
if (m->monotonic != 0)
fprintf(f, " Monotonic="USEC_FMT, m->monotonic);
if (m->realtime != 0)
fprintf(f, " Realtime="USEC_FMT, m->realtime);
if (m->seqnum != 0)
fprintf(f, " SequenceNumber=%"PRIu64, m->seqnum);
if (m->monotonic != 0 || m->realtime != 0 || m->seqnum != 0)
fputs("\n", f);
bus_creds_dump(&m->creds, f, true);
}
r = sd_bus_message_rewind(m, !(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY));
if (r < 0)
return log_error_errno(r, "Failed to rewind: %m");
if (!(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY)) {
_cleanup_free_ char *prefix = NULL;
prefix = indent(0, flags);
if (!prefix)
return log_oom();
fprintf(f, "%sMESSAGE \"%s\" {\n", prefix, strempty(m->root_container.signature));
}
for (;;) {
_cleanup_free_ char *prefix = NULL;
const char *contents = NULL;
char type;
union {
uint8_t u8;
uint16_t u16;
int16_t s16;
uint32_t u32;
int32_t s32;
uint64_t u64;
int64_t s64;
double d64;
const char *string;
int i;
} basic;
r = sd_bus_message_peek_type(m, &type, &contents);
if (r < 0)
return log_error_errno(r, "Failed to peek type: %m");
if (r == 0) {
if (level <= 1)
break;
r = sd_bus_message_exit_container(m);
if (r < 0)
return log_error_errno(r, "Failed to exit container: %m");
level--;
prefix = indent(level, flags);
if (!prefix)
return log_oom();
fprintf(f, "%s};\n", prefix);
continue;
}
prefix = indent(level, flags);
if (!prefix)
return log_oom();
if (bus_type_is_container(type) > 0) {
r = sd_bus_message_enter_container(m, type, contents);
if (r < 0)
return log_error_errno(r, "Failed to enter container: %m");
if (type == SD_BUS_TYPE_ARRAY)
fprintf(f, "%sARRAY \"%s\" {\n", prefix, contents);
else if (type == SD_BUS_TYPE_VARIANT)
fprintf(f, "%sVARIANT \"%s\" {\n", prefix, contents);
else if (type == SD_BUS_TYPE_STRUCT)
fprintf(f, "%sSTRUCT \"%s\" {\n", prefix, contents);
else if (type == SD_BUS_TYPE_DICT_ENTRY)
fprintf(f, "%sDICT_ENTRY \"%s\" {\n", prefix, contents);
level++;
continue;
}
r = sd_bus_message_read_basic(m, type, &basic);
if (r < 0)
return log_error_errno(r, "Failed to get basic: %m");
assert(r > 0);
switch (type) {
case SD_BUS_TYPE_BYTE:
fprintf(f, "%sBYTE %s%u%s;\n", prefix, ansi_highlight(), basic.u8, ansi_normal());
break;
case SD_BUS_TYPE_BOOLEAN:
fprintf(f, "%sBOOLEAN %s%s%s;\n", prefix, ansi_highlight(), true_false(basic.i), ansi_normal());
break;
case SD_BUS_TYPE_INT16:
fprintf(f, "%sINT16 %s%i%s;\n", prefix, ansi_highlight(), basic.s16, ansi_normal());
break;
case SD_BUS_TYPE_UINT16:
fprintf(f, "%sUINT16 %s%u%s;\n", prefix, ansi_highlight(), basic.u16, ansi_normal());
break;
case SD_BUS_TYPE_INT32:
fprintf(f, "%sINT32 %s%i%s;\n", prefix, ansi_highlight(), basic.s32, ansi_normal());
break;
case SD_BUS_TYPE_UINT32:
fprintf(f, "%sUINT32 %s%u%s;\n", prefix, ansi_highlight(), basic.u32, ansi_normal());
break;
case SD_BUS_TYPE_INT64:
fprintf(f, "%sINT64 %s%"PRIi64"%s;\n", prefix, ansi_highlight(), basic.s64, ansi_normal());
break;
case SD_BUS_TYPE_UINT64:
fprintf(f, "%sUINT64 %s%"PRIu64"%s;\n", prefix, ansi_highlight(), basic.u64, ansi_normal());
break;
case SD_BUS_TYPE_DOUBLE:
fprintf(f, "%sDOUBLE %s%g%s;\n", prefix, ansi_highlight(), basic.d64, ansi_normal());
break;
case SD_BUS_TYPE_STRING:
fprintf(f, "%sSTRING \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal());
break;
case SD_BUS_TYPE_OBJECT_PATH:
fprintf(f, "%sOBJECT_PATH \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal());
break;
case SD_BUS_TYPE_SIGNATURE:
fprintf(f, "%sSIGNATURE \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal());
break;
case SD_BUS_TYPE_UNIX_FD:
fprintf(f, "%sUNIX_FD %s%i%s;\n", prefix, ansi_highlight(), basic.i, ansi_normal());
break;
default:
assert_not_reached("Unknown basic type.");
}
}
if (!(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY)) {
_cleanup_free_ char *prefix = NULL;
prefix = indent(0, flags);
if (!prefix)
return log_oom();
fprintf(f, "%s};\n\n", prefix);
}
return 0;
}
static void dump_capabilities(
sd_bus_creds *c,
FILE *f,
const char *name,
bool terse,
int (*has)(sd_bus_creds *c, int capability)) {
unsigned long i, last_cap;
unsigned n = 0;
int r;
assert(c);
assert(f);
assert(name);
assert(has);
i = 0;
r = has(c, i);
if (r < 0)
return;
fprintf(f, "%s%s=%s", terse ? " " : "", name, terse ? "" : ansi_highlight());
last_cap = cap_last_cap();
for (;;) {
if (r > 0) {
if (n > 0)
fputc(' ', f);
if (n % 4 == 3)
fprintf(f, terse ? "\n " : "\n ");
fprintf(f, "%s", strna(capability_to_name(i)));
n++;
}
i++;
if (i > last_cap)
break;
r = has(c, i);
}
fputs("\n", f);
if (!terse)
fputs(ansi_normal(), f);
}
int bus_creds_dump(sd_bus_creds *c, FILE *f, bool terse) {
uid_t owner, audit_loginuid;
uint32_t audit_sessionid;
char **cmdline = NULL, **well_known = NULL;
const char *prefix, *color, *suffix, *s;
int r, q, v, w, z;
assert(c);
if (!f)
f = stdout;
if (terse) {
prefix = " ";
suffix = "";
color = "";
} else {
const char *off;
prefix = "";
color = ansi_highlight();
off = ansi_normal();
suffix = strjoina(off, "\n");
}
if (c->mask & SD_BUS_CREDS_PID)
fprintf(f, "%sPID=%s"PID_FMT"%s", prefix, color, c->pid, suffix);
if (c->mask & SD_BUS_CREDS_TID)
fprintf(f, "%sTID=%s"PID_FMT"%s", prefix, color, c->tid, suffix);
if (c->mask & SD_BUS_CREDS_PPID) {
if (c->ppid == 0)
fprintf(f, "%sPPID=%sn/a%s", prefix, color, suffix);
else
fprintf(f, "%sPPID=%s"PID_FMT"%s", prefix, color, c->ppid, suffix);
}
if (c->mask & SD_BUS_CREDS_TTY)
fprintf(f, "%sTTY=%s%s%s", prefix, color, strna(c->tty), suffix);
if (terse && ((c->mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_PPID|SD_BUS_CREDS_TTY))))
fputs("\n", f);
if (c->mask & SD_BUS_CREDS_UID)
fprintf(f, "%sUID=%s"UID_FMT"%s", prefix, color, c->uid, suffix);
if (c->mask & SD_BUS_CREDS_EUID)
fprintf(f, "%sEUID=%s"UID_FMT"%s", prefix, color, c->euid, suffix);
if (c->mask & SD_BUS_CREDS_SUID)
fprintf(f, "%sSUID=%s"UID_FMT"%s", prefix, color, c->suid, suffix);
if (c->mask & SD_BUS_CREDS_FSUID)
fprintf(f, "%sFSUID=%s"UID_FMT"%s", prefix, color, c->fsuid, suffix);
r = sd_bus_creds_get_owner_uid(c, &owner);
if (r >= 0)
fprintf(f, "%sOwnerUID=%s"UID_FMT"%s", prefix, color, owner, suffix);
if (c->mask & SD_BUS_CREDS_GID)
fprintf(f, "%sGID=%s"GID_FMT"%s", prefix, color, c->gid, suffix);
if (c->mask & SD_BUS_CREDS_EGID)
fprintf(f, "%sEGID=%s"GID_FMT"%s", prefix, color, c->egid, suffix);
if (c->mask & SD_BUS_CREDS_SGID)
fprintf(f, "%sSGID=%s"GID_FMT"%s", prefix, color, c->sgid, suffix);
if (c->mask & SD_BUS_CREDS_FSGID)
fprintf(f, "%sFSGID=%s"GID_FMT"%s", prefix, color, c->fsgid, suffix);
if (c->mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
unsigned i;
fprintf(f, "%sSupplementaryGIDs=%s", prefix, color);
for (i = 0; i < c->n_supplementary_gids; i++)
fprintf(f, "%s" GID_FMT, i > 0 ? " " : "", c->supplementary_gids[i]);
fprintf(f, "%s", suffix);
}
if (terse && ((c->mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID|
SD_BUS_CREDS_SUPPLEMENTARY_GIDS)) || r >= 0))
fputs("\n", f);
if (c->mask & SD_BUS_CREDS_COMM)
fprintf(f, "%sComm=%s%s%s", prefix, color, c->comm, suffix);
if (c->mask & SD_BUS_CREDS_TID_COMM)
fprintf(f, "%sTIDComm=%s%s%s", prefix, color, c->tid_comm, suffix);
if (c->mask & SD_BUS_CREDS_EXE)
fprintf(f, "%sExe=%s%s%s", prefix, color, strna(c->exe), suffix);
if (terse && (c->mask & (SD_BUS_CREDS_EXE|SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM)))
fputs("\n", f);
r = sd_bus_creds_get_cmdline(c, &cmdline);
if (r >= 0) {
char **i;
fprintf(f, "%sCommandLine=%s", prefix, color);
STRV_FOREACH(i, cmdline) {
if (i != cmdline)
fputc(' ', f);
fputs(*i, f);
}
fprintf(f, "%s", suffix);
} else if (r != -ENODATA)
fprintf(f, "%sCommandLine=%sn/a%s", prefix, color, suffix);
if (c->mask & SD_BUS_CREDS_SELINUX_CONTEXT)
fprintf(f, "%sLabel=%s%s%s", prefix, color, c->label, suffix);
if (c->mask & SD_BUS_CREDS_DESCRIPTION)
fprintf(f, "%sDescription=%s%s%s", prefix, color, c->description, suffix);
if (terse && (c->mask & (SD_BUS_CREDS_SELINUX_CONTEXT|SD_BUS_CREDS_DESCRIPTION)))
fputs("\n", f);
if (c->mask & SD_BUS_CREDS_CGROUP)
fprintf(f, "%sCGroup=%s%s%s", prefix, color, c->cgroup, suffix);
s = NULL;
r = sd_bus_creds_get_unit(c, &s);
if (r != -ENODATA)
fprintf(f, "%sUnit=%s%s%s", prefix, color, strna(s), suffix);
s = NULL;
v = sd_bus_creds_get_slice(c, &s);
if (v != -ENODATA)
fprintf(f, "%sSlice=%s%s%s", prefix, color, strna(s), suffix);
s = NULL;
q = sd_bus_creds_get_user_unit(c, &s);
if (q != -ENODATA)
fprintf(f, "%sUserUnit=%s%s%s", prefix, color, strna(s), suffix);
s = NULL;
w = sd_bus_creds_get_user_slice(c, &s);
if (w != -ENODATA)
fprintf(f, "%sUserSlice=%s%s%s", prefix, color, strna(s), suffix);
s = NULL;
z = sd_bus_creds_get_session(c, &s);
if (z != -ENODATA)
fprintf(f, "%sSession=%s%s%s", prefix, color, strna(s), suffix);
if (terse && ((c->mask & SD_BUS_CREDS_CGROUP) || r != -ENODATA || q != -ENODATA || v != -ENODATA || w != -ENODATA || z != -ENODATA))
fputs("\n", f);
r = sd_bus_creds_get_audit_login_uid(c, &audit_loginuid);
if (r >= 0)
fprintf(f, "%sAuditLoginUID=%s"UID_FMT"%s", prefix, color, audit_loginuid, suffix);
else if (r != -ENODATA)
fprintf(f, "%sAuditLoginUID=%sn/a%s", prefix, color, suffix);
q = sd_bus_creds_get_audit_session_id(c, &audit_sessionid);
if (q >= 0)
fprintf(f, "%sAuditSessionID=%s%"PRIu32"%s", prefix, color, audit_sessionid, suffix);
else if (q != -ENODATA)
fprintf(f, "%sAuditSessionID=%sn/a%s", prefix, color, suffix);
if (terse && (r != -ENODATA || q != -ENODATA))
fputs("\n", f);
if (c->mask & SD_BUS_CREDS_UNIQUE_NAME)
fprintf(f, "%sUniqueName=%s%s%s", prefix, color, c->unique_name, suffix);
if (sd_bus_creds_get_well_known_names(c, &well_known) >= 0) {
char **i;
fprintf(f, "%sWellKnownNames=%s", prefix, color);
STRV_FOREACH(i, well_known) {
if (i != well_known)
fputc(' ', f);
fputs(*i, f);
}
fprintf(f, "%s", suffix);
}
if (terse && (c->mask & SD_BUS_CREDS_UNIQUE_NAME || well_known))
fputc('\n', f);
dump_capabilities(c, f, "EffectiveCapabilities", terse, sd_bus_creds_has_effective_cap);
dump_capabilities(c, f, "PermittedCapabilities", terse, sd_bus_creds_has_permitted_cap);
dump_capabilities(c, f, "InheritableCapabilities", terse, sd_bus_creds_has_inheritable_cap);
dump_capabilities(c, f, "BoundingCapabilities", terse, sd_bus_creds_has_bounding_cap);
return 0;
}
/*
* For details about the file format, see:
*
* http://wiki.wireshark.org/Development/LibpcapFileFormat
*/
typedef struct _packed_ pcap_hdr_s {
uint32_t magic_number; /* magic number */
uint16_t version_major; /* major version number */
uint16_t version_minor; /* minor version number */
int32_t thiszone; /* GMT to local correction */
uint32_t sigfigs; /* accuracy of timestamps */
uint32_t snaplen; /* max length of captured packets, in octets */
uint32_t network; /* data link type */
} pcap_hdr_t ;
typedef struct _packed_ pcaprec_hdr_s {
uint32_t ts_sec; /* timestamp seconds */
uint32_t ts_usec; /* timestamp microseconds */
uint32_t incl_len; /* number of octets of packet saved in file */
uint32_t orig_len; /* actual length of packet */
} pcaprec_hdr_t;
int bus_pcap_header(size_t snaplen, FILE *f) {
pcap_hdr_t hdr = {
.magic_number = 0xa1b2c3d4U,
.version_major = 2,
.version_minor = 4,
.thiszone = 0, /* UTC */
.sigfigs = 0,
.network = 231, /* D-Bus */
};
if (!f)
f = stdout;
assert(snaplen > 0);
assert((size_t) (uint32_t) snaplen == snaplen);
hdr.snaplen = (uint32_t) snaplen;
fwrite(&hdr, 1, sizeof(hdr), f);
return fflush_and_check(f);
}
int bus_message_pcap_frame(sd_bus_message *m, size_t snaplen, FILE *f) {
struct bus_body_part *part;
pcaprec_hdr_t hdr = {};
struct timeval tv;
unsigned i;
size_t w;
if (!f)
f = stdout;
assert(m);
assert(snaplen > 0);
assert((size_t) (uint32_t) snaplen == snaplen);
if (m->realtime != 0)
timeval_store(&tv, m->realtime);
else
assert_se(gettimeofday(&tv, NULL) >= 0);
hdr.ts_sec = tv.tv_sec;
hdr.ts_usec = tv.tv_usec;
hdr.orig_len = BUS_MESSAGE_SIZE(m);
hdr.incl_len = MIN(hdr.orig_len, snaplen);
/* write the pcap header */
fwrite(&hdr, 1, sizeof(hdr), f);
/* write the dbus header */
w = MIN(BUS_MESSAGE_BODY_BEGIN(m), snaplen);
fwrite(m->header, 1, w, f);
snaplen -= w;
/* write the dbus body */
MESSAGE_FOREACH_PART(part, i, m) {
if (snaplen <= 0)
break;
w = MIN(part->size, snaplen);
fwrite(part->data, 1, w, f);
snaplen -= w;
}
return fflush_and_check(f);
}
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