diff options
Diffstat (limited to 'src/libsystemd/bus-dump.c')
| -rw-r--r-- | src/libsystemd/bus-dump.c | 417 |
1 files changed, 417 insertions, 0 deletions
diff --git a/src/libsystemd/bus-dump.c b/src/libsystemd/bus-dump.c new file mode 100644 index 0000000000..78e7597ed5 --- /dev/null +++ b/src/libsystemd/bus-dump.c @@ -0,0 +1,417 @@ +/*-*- 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 "audit.h" + +#include "bus-message.h" +#include "bus-internal.h" +#include "bus-type.h" +#include "bus-dump.h" + +static char *indent(unsigned level) { + char *p; + + p = new(char, 2 + level + 1); + if (!p) + return NULL; + + p[0] = p[1] = ' '; + memset(p + 2, '\t', level); + p[2 + level] = 0; + + return p; +} + +int bus_message_dump(sd_bus_message *m, FILE *f, bool with_header) { + unsigned level = 1; + int r; + + assert(m); + + if (!f) + f = stdout; + + if (with_header) { + fprintf(f, + "%s%s%sType=%s%s%s Endian=%c Flags=%u Version=%u", + 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); + + /* 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=%lu", (unsigned long) BUS_MESSAGE_COOKIE(m)); + + if (m->reply_cookie != 0) + fprintf(f, " ReplyCookie=%lu", (unsigned long) 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=%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); + + bus_creds_dump(&m->creds, f); + } + + 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 = indent(level); + if (!prefix) + return log_oom(); + + fprintf(f, "%s};\n", prefix); + continue; + } + + prefix = indent(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(), 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%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\n"); + return 0; +} + +static void dump_capabilities( + sd_bus_creds *c, + FILE *f, + const char *name, + 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=", name); + last_cap = cap_last_cap(); + + for (;;) { + if (r > 0) { + _cleanup_cap_free_charp_ char *t; + + if (n > 0) + fputc(' ', f); + if (n % 4 == 3) + fputs("\n ", f); + + t = cap_to_name(i); + fprintf(f, "%s", t); + n++; + } + + i++; + + if (i > last_cap) + break; + + r = has(c, i); + } + + fputs("\n", f); +} + +int bus_creds_dump(sd_bus_creds *c, FILE *f) { + 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; + int r; + + assert(c); + + if (!f) + f = stdout; + + if (c->mask & SD_BUS_CREDS_PID) + fprintf(f, " PID=%lu", (unsigned long) c->pid); + if (c->mask & SD_BUS_CREDS_PID_STARTTIME) + fprintf(f, " PIDStartTime=%llu", (unsigned long long) c->pid_starttime); + if (c->mask & SD_BUS_CREDS_TID) + fprintf(f, " TID=%lu", (unsigned long) c->tid); + if (c->mask & SD_BUS_CREDS_UID) + fprintf(f, " UID=%lu", (unsigned long) c->uid); + r = sd_bus_creds_get_owner_uid(c, &owner); + if (r >= 0) + fprintf(f, " OwnerUID=%lu", (unsigned long) owner); + if (c->mask & SD_BUS_CREDS_GID) + fprintf(f, " GID=%lu", (unsigned long) c->gid); + + 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) + fputs("\n", f); + + if (c->mask & SD_BUS_CREDS_EXE) + fprintf(f, " Exe=%s", c->exe); + if (c->mask & SD_BUS_CREDS_COMM) + fprintf(f, " Comm=%s", c->comm); + if (c->mask & SD_BUS_CREDS_TID_COMM) + fprintf(f, " TIDComm=%s", c->tid_comm); + if (c->mask & SD_BUS_CREDS_SELINUX_CONTEXT) + fprintf(f, " Label=%s", c->label); + + if (c->mask & (SD_BUS_CREDS_EXE|SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM|SD_BUS_CREDS_SELINUX_CONTEXT)) + fputs("\n", f); + + if (sd_bus_creds_get_cmdline(c, &cmdline) >= 0) { + char **i; + + fputs(" CommandLine={", f); + STRV_FOREACH(i, cmdline) { + if (i != cmdline) + fputc(' ', f); + + fputs(*i, f); + } + + fputs("}\n", f); + } + + if (c->mask & SD_BUS_CREDS_CGROUP) + fprintf(f, " CGroup=%s", c->cgroup); + sd_bus_creds_get_unit(c, &u); + if (u) + fprintf(f, " Unit=%s", u); + sd_bus_creds_get_user_unit(c, &uu); + if (uu) + fprintf(f, " UserUnit=%s", uu); + sd_bus_creds_get_slice(c, &sl); + if (sl) + fprintf(f, " Slice=%s", sl); + sd_bus_creds_get_session(c, &s); + if (s) + fprintf(f, " Session=%s", s); + + if ((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, " AuditLoginUID=%lu", (unsigned long) audit_loginuid); + } + if (sd_bus_creds_get_audit_session_id(c, &audit_sessionid) >= 0) { + audit_sessionid_is_set = true; + fprintf(f, " AuditSessionID=%lu", (unsigned long) audit_sessionid); + } + + if (audit_loginuid_is_set || audit_sessionid_is_set) + fputs("\n", f); + + if (c->mask & SD_BUS_CREDS_UNIQUE_NAME) + fprintf(f, " UniqueName=%s", c->unique_name); + + if (sd_bus_creds_get_well_known_names(c, &well_known) >= 0) { + char **i; + + fputs(" WellKnownNames={", f); + STRV_FOREACH(i, well_known) { + if (i != well_known) + fputc(' ', f); + + fputs(*i, f); + } + + fputc('}', f); + } + + if (c->mask & SD_BUS_CREDS_UNIQUE_NAME || well_known) + fputc('\n', f); + + dump_capabilities(c, f, "EffectiveCapabilities", sd_bus_creds_has_effective_cap); + dump_capabilities(c, f, "PermittedCapabilities", sd_bus_creds_has_permitted_cap); + dump_capabilities(c, f, "InheritableCapabilities", sd_bus_creds_has_inheritable_cap); + dump_capabilities(c, f, "BoundingCapabilities", sd_bus_creds_has_bounding_cap); + + return 0; +} |