--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ 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 "util.h"
+#include "capability.h"
+#include "strv.h"
+#include "macro.h"
+#include "cap-list.h"
+
+#include "bus-message.h"
+#include "bus-internal.h"
+#include "bus-type.h"
+#include "bus-dump.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() : "", draw_special_char(DRAW_TRIANGULAR_BULLET), ansi_highlight_off(),
+ ansi_highlight(), bus_message_type_to_string(m->header->type), ansi_highlight_off(),
+ 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_highlight_off());
+ if (m->destination)
+ fprintf(f, " Destination=%s%s%s", ansi_highlight(), m->destination, ansi_highlight_off());
+ if (m->path)
+ fprintf(f, " Path=%s%s%s", ansi_highlight(), m->path, ansi_highlight_off());
+ if (m->interface)
+ fprintf(f, " Interface=%s%s%s", ansi_highlight(), m->interface, ansi_highlight_off());
+ if (m->member)
+ fprintf(f, " Member=%s%s%s", ansi_highlight(), m->member, ansi_highlight_off());
+
+ 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_highlight_off(),
+ ansi_highlight_red(), strna(m->error.message), ansi_highlight_off());
+
+ 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_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_BOOLEAN:
+ fprintf(f, "%sBOOLEAN %s%s%s;\n", prefix, ansi_highlight(), true_false(basic.i), ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_INT16:
+ fprintf(f, "%sINT16 %s%i%s;\n", prefix, ansi_highlight(), basic.s16, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_UINT16:
+ fprintf(f, "%sUINT16 %s%u%s;\n", prefix, ansi_highlight(), basic.u16, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_INT32:
+ fprintf(f, "%sINT32 %s%i%s;\n", prefix, ansi_highlight(), basic.s32, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_UINT32:
+ fprintf(f, "%sUINT32 %s%u%s;\n", prefix, ansi_highlight(), basic.u32, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_INT64:
+ fprintf(f, "%sINT64 %s%"PRIi64"%s;\n", prefix, ansi_highlight(), basic.s64, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_UINT64:
+ fprintf(f, "%sUINT64 %s%"PRIu64"%s;\n", prefix, ansi_highlight(), basic.u64, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_DOUBLE:
+ fprintf(f, "%sDOUBLE %s%g%s;\n", prefix, ansi_highlight(), basic.d64, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_STRING:
+ fprintf(f, "%sSTRING \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_OBJECT_PATH:
+ fprintf(f, "%sOBJECT_PATH \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_SIGNATURE:
+ fprintf(f, "%sSIGNATURE \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_highlight_off());
+ break;
+
+ case SD_BUS_TYPE_UNIX_FD:
+ fprintf(f, "%sUNIX_FD %s%i%s;\n", prefix, ansi_highlight(), basic.i, ansi_highlight_off());
+ 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_highlight_off(), f);
+}
+
+int bus_creds_dump(sd_bus_creds *c, FILE *f, bool terse) {
+ bool audit_sessionid_is_set = false, audit_loginuid_is_set = false;
+ const char *u = NULL, *uu = NULL, *s = NULL, *sl = NULL;
+ uid_t owner, audit_loginuid;
+ uint32_t audit_sessionid;
+ char **cmdline = NULL, **well_known = NULL;
+ const char *prefix, *color, *suffix;
+ int r;
+
+ assert(c);
+
+ if (!f)
+ f = stdout;
+
+ if (terse) {
+ prefix = " ";
+ suffix = "";
+ color = "";
+ } else {
+ const char *off;
+
+ prefix = "";
+ color = ansi_highlight();
+
+ off = ansi_highlight_off();
+ 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 (terse && ((c->mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_TID))))
+ 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, c->exe, suffix);
+
+ if (terse && (c->mask & (SD_BUS_CREDS_EXE|SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM)))
+ fputs("\n", f);
+
+ if (sd_bus_creds_get_cmdline(c, &cmdline) >= 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);
+ }
+
+ 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);
+ (void) sd_bus_creds_get_unit(c, &u);
+ if (u)
+ fprintf(f, "%sUnit=%s%s%s", prefix, color, u, suffix);
+ (void) sd_bus_creds_get_user_unit(c, &uu);
+ if (uu)
+ fprintf(f, "%sUserUnit=%s%s%s", prefix, color, uu, suffix);
+ (void) sd_bus_creds_get_slice(c, &sl);
+ if (sl)
+ fprintf(f, "%sSlice=%s%s%s", prefix, color, sl, suffix);
+ (void) sd_bus_creds_get_session(c, &s);
+ if (s)
+ fprintf(f, "%sSession=%s%s%s", prefix, color, s, suffix);
+
+ if (terse && ((c->mask & SD_BUS_CREDS_CGROUP) || u || uu || sl || s))
+ fputs("\n", f);
+
+ if (sd_bus_creds_get_audit_login_uid(c, &audit_loginuid) >= 0) {
+ audit_loginuid_is_set = true;
+ fprintf(f, "%sAuditLoginUID=%s"UID_FMT"%s", prefix, color, audit_loginuid, suffix);
+ }
+ if (sd_bus_creds_get_audit_session_id(c, &audit_sessionid) >= 0) {
+ audit_sessionid_is_set = true;
+ fprintf(f, "%sAuditSessionID=%s%"PRIu32"%s", prefix, color, audit_sessionid, suffix);
+ }
+
+ if (terse && (audit_loginuid_is_set || audit_sessionid_is_set))
+ 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);
+ fflush(f);
+
+ return 0;
+}
+
+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;
+ }
+
+ fflush(f);
+
+ return 0;
+}
~ianmdlvl / elogind.git / blobdiff