bus: add missing dump.[ch]

1 files changed, 313 insertions, 0 deletions

diff --git a/src/libsystemd-bus/bus-dump.c b/src/libsystemd-bus/bus-dump.c
new file mode 100644
index 0000000000..8c44326f90
--- /dev/null
+++ b/src/libsystemd-bus/bus-dump.c
@@ -0,0 +1,313 @@
+/*-*- 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 <sys/capability.h>
+
+#include "util.h"
+#include "capability.h"
+#include "strv.h"
+
+#include "bus-message.h"
+#include "bus-internal.h"
+#include "bus-type.h"
+#include "bus-dump.h"
+
+int bus_message_dump(sd_bus_message *m, FILE *f, bool with_header) {
+        const char *u = NULL, *uu = NULL, *s = NULL;
+        char **cmdline = NULL;
+        unsigned level = 1;
+        int r;
+        uid_t owner, audit_loginuid;
+        uint32_t audit_sessionid;
+
+        assert(m);
+
+        if (!f)
+                f = stdout;
+
+        if (with_header) {
+                fprintf(f,
+                        "%sEndian=%c  Type=%s%s%s  Flags=%u  Version=%u  Serial=%u ",
+                        draw_special_char(DRAW_TRIANGULAR_BULLET),
+                        m->header->endian,
+                        ansi_highlight(), bus_message_type_to_string(m->header->type), ansi_highlight_off(),
+                        m->header->flags,
+                        m->header->version,
+                        BUS_MESSAGE_SERIAL(m));
+
+                if (m->reply_serial != 0)
+                        fprintf(f, "  ReplySerial=%u", m->reply_serial);
+
+                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->pid != 0)
+                        fprintf(f, "  PID=%lu", (unsigned long) m->pid);
+                if (m->pid_starttime != 0)
+                        fprintf(f, "  PIDStartTime=%llu", (unsigned long long) m->pid_starttime);
+                if (m->tid != 0)
+                        fprintf(f, "  TID=%lu", (unsigned long) m->tid);
+                if (m->uid_valid)
+                        fprintf(f, "  UID=%lu", (unsigned long) m->uid);
+                r = sd_bus_message_get_owner_uid(m, &owner);
+                if (r >= 0)
+                        fprintf(f, "  OwnerUID=%lu", (unsigned long) owner);
+                if (m->gid_valid)
+                        fprintf(f, "  GID=%lu", (unsigned long) m->gid);
+
+                if (m->pid != 0 || m->pid_starttime != 0 || m->tid != 0 || m->uid_valid || r >= 0 || m->gid_valid)
+                        fputs("\n", f);
+
+                if (m->monotonic != 0)
+                        fprintf(f, "  Monotonic=%llu", (unsigned long long) m->monotonic);
+                if (m->realtime != 0)
+                        fprintf(f, "  Realtime=%llu", (unsigned long long) m->realtime);
+
+                if (m->monotonic != 0 || m->realtime != 0)
+                        fputs("\n", f);
+
+                if (m->exe)
+                        fprintf(f, "  Exe=%s", m->exe);
+                if (m->comm)
+                        fprintf(f, "  Comm=%s", m->comm);
+                if (m->tid_comm)
+                        fprintf(f, "  TIDComm=%s", m->tid_comm);
+                if (m->label)
+                        fprintf(f, "  Label=%s", m->label);
+
+                if (m->exe || m->comm || m->tid_comm || m->label)
+                        fputs("\n", f);
+
+                if (sd_bus_message_get_cmdline(m, &cmdline) >= 0) {
+                        char **c;
+
+                        fputs("  CommandLine=[", f);
+                        STRV_FOREACH(c, cmdline) {
+                                if (c != cmdline)
+                                        fputc(' ', f);
+
+                                fputs(*c, f);
+                        }
+
+                        fputs("]\n", f);
+                }
+
+                if (m->cgroup)
+                        fprintf(f, "  CGroup=%s\n", m->cgroup);
+
+                sd_bus_message_get_unit(m, &u);
+                if (u)
+                        fprintf(f, "  Unit=%s", u);
+                sd_bus_message_get_user_unit(m, &uu);
+                if (uu)
+                        fprintf(f, "  UserUnit=%s", uu);
+                sd_bus_message_get_session(m, &s);
+                if (s)
+                        fprintf(f, "  Session=%s", s);
+                if (sd_bus_message_get_audit_loginuid(m, &audit_loginuid) >= 0)
+                        fprintf(f, "  AuditLoginUID=%lu", (unsigned long) audit_loginuid);
+                if (sd_bus_message_get_audit_sessionid(m, &audit_sessionid) >= 0)
+                        fprintf(f, "  AuditSessionID=%lu", (unsigned long) audit_sessionid);
+
+                if (u || uu || s || audit_loginuid || audit_sessionid)
+                        fputs("\n", f);
+
+                r = sd_bus_message_has_effective_cap(m, 0);
+                if (r >= 0) {
+                        unsigned long c, last_cap;
+
+                        fprintf(f, "  Capabilities=%s", r ? cap_to_name(0) : "");
+
+                        last_cap = cap_last_cap();
+                        for (c = 0; c < last_cap; c++) {
+                                r = sd_bus_message_has_effective_cap(m, c);
+                                if (r > 0)
+                                        fprintf(f, "|%s", cap_to_name(c));
+                        }
+                }
+        }
+
+        r = sd_bus_message_rewind(m, true);
+        if (r < 0) {
+                log_error("Failed to rewind: %s", strerror(-r));
+                return r;
+        }
+
+        fprintf(f, "MESSAGE \"%s\" {\n", 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) {
+                        log_error("Failed to peek type: %s", strerror(-r));
+                        return r;
+                }
+
+                if (r == 0) {
+                        if (level <= 1)
+                                break;
+
+                        r = sd_bus_message_exit_container(m);
+                        if (r < 0) {
+                                log_error("Failed to exit container: %s", strerror(-r));
+                                return r;
+                        }
+
+                        level--;
+
+                        prefix = strrep("\t", level);
+                        if (!prefix)
+                                return log_oom();
+
+                        fprintf(f, "%s};\n", prefix);
+                        continue;
+                }
+
+                prefix = strrep("\t", level);
+                if (!prefix)
+                        return log_oom();
+
+                if (bus_type_is_container(type) > 0) {
+                        r = sd_bus_message_enter_container(m, type, contents);
+                        if (r < 0) {
+                                log_error("Failed to enter container: %s", strerror(-r));
+                                return r;
+                        }
+
+                        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) {
+                        log_error("Failed to get basic: %s", strerror(-r));
+                        return r;
+                }
+
+                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(), yes_no(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%lli%s;\n", prefix, ansi_highlight(), (long long) basic.s64, ansi_highlight_off());
+                        break;
+
+                case SD_BUS_TYPE_UINT64:
+                        fprintf(f, "%sUINT64 %s%llu%s;\n", prefix, ansi_highlight(), (unsigned long long) 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.");
+                }
+        }
+
+        fprintf(f, "};\n");
+        return 0;
+}