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https://github.com/samba-team/samba.git
synced 2025-03-03 12:58:35 +03:00
smbd: add smbd_impersonate_debug_create() helper
This will be used to implement no-op impersonation for the create_conn_struct_as_root() case were we don't really have other unrelated events in the loop and only need a valid tevent wrapper context to avoid double free on the raw event context on teardown. This also adds useful debugging instead of being a full no-op wrapper. Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Ralph Boehme <slow@samba.org>
This commit is contained in:
Stefan Metzmacher
parent
7b5a47b846
commit
23319ef5a2
@ -1189,6 +1189,12 @@ void reply_transs2(struct smb_request *req);
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/* The following definitions come from smbd/uid.c */
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#define smbd_impersonate_debug_create(main_ev, name, dbg_lvl) \
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_smbd_impersonate_debug_create(main_ev, name, dbg_lvl, __location__)
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struct tevent_context *_smbd_impersonate_debug_create(struct tevent_context *main_ev,
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const char *name,
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int dbg_lvl,
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const char *location);
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bool change_to_guest(void);
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NTSTATUS check_user_share_access(connection_struct *conn,
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const struct auth_session_info *session_info,
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@ -25,6 +25,235 @@
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#include "libcli/security/security.h"
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#include "passdb/lookup_sid.h"
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#include "auth.h"
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#include "lib/util/time_basic.h"
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struct smbd_impersonate_debug_state {
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int dbg_lvl;
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const char *name;
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};
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static bool smbd_impersonate_debug_before_use(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev, location));
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return true;
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}
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static void smbd_impersonate_debug_after_use(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev, location));
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}
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static void smbd_impersonate_debug_before_fd_handler(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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struct tevent_fd *fde,
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uint16_t flags,
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const char *handler_name,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] "
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"fde[%p] flags[0x%X] handler_name[%s] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev,
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fde, flags, handler_name, location));
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}
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static void smbd_impersonate_debug_after_fd_handler(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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struct tevent_fd *fde,
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uint16_t flags,
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const char *handler_name,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] "
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"fde[%p] flags[0x%X] handler_name[%s] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev,
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fde, flags, handler_name, location));
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}
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static void smbd_impersonate_debug_before_timer_handler(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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struct tevent_timer *te,
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struct timeval requested_time,
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struct timeval trigger_time,
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const char *handler_name,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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struct timeval_buf requested_buf;
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struct timeval_buf trigger_buf;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] "
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"te[%p] requested_time[%s] trigger_time[%s] handler_name[%s] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev, te,
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timeval_str_buf(&requested_time, true, true, &requested_buf),
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timeval_str_buf(&trigger_time, true, true, &trigger_buf),
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handler_name, location));
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}
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static void smbd_impersonate_debug_after_timer_handler(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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struct tevent_timer *te,
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struct timeval requested_time,
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struct timeval trigger_time,
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const char *handler_name,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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struct timeval_buf requested_buf;
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struct timeval_buf trigger_buf;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] "
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"te[%p] requested_time[%s] trigger_time[%s] handler_name[%s] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev, te,
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timeval_str_buf(&requested_time, true, true, &requested_buf),
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timeval_str_buf(&trigger_time, true, true, &trigger_buf),
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handler_name, location));
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}
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static void smbd_impersonate_debug_before_immediate_handler(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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struct tevent_immediate *im,
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const char *handler_name,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] "
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"im[%p] handler_name[%s] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev,
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im, handler_name, location));
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}
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static void smbd_impersonate_debug_after_immediate_handler(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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struct tevent_immediate *im,
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const char *handler_name,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] "
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"im[%p] handler_name[%s] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev,
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im, handler_name, location));
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}
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static void smbd_impersonate_debug_before_signal_handler(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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struct tevent_signal *se,
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int signum,
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int count,
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void *siginfo,
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const char *handler_name,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] "
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"se[%p] signum[%d] count[%d] siginfo[%p] handler_name[%s] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev,
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se, signum, count, siginfo, handler_name, location));
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}
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static void smbd_impersonate_debug_after_signal_handler(struct tevent_context *wrap_ev,
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void *private_data,
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struct tevent_context *main_ev,
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struct tevent_signal *se,
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int signum,
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int count,
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void *siginfo,
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const char *handler_name,
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const char *location)
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{
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struct smbd_impersonate_debug_state *state =
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(struct smbd_impersonate_debug_state *)private_data;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] "
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"se[%p] signum[%d] count[%d] siginfo[%p] handler_name[%s] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev,
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se, signum, count, siginfo, handler_name, location));
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}
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static const struct tevent_wrapper_ops smbd_impersonate_debug_ops = {
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.name = "smbd_impersonate_debug",
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.before_use = smbd_impersonate_debug_before_use,
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.after_use = smbd_impersonate_debug_after_use,
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.before_fd_handler = smbd_impersonate_debug_before_fd_handler,
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.after_fd_handler = smbd_impersonate_debug_after_fd_handler,
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.before_timer_handler = smbd_impersonate_debug_before_timer_handler,
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.after_timer_handler = smbd_impersonate_debug_after_timer_handler,
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.before_immediate_handler = smbd_impersonate_debug_before_immediate_handler,
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.after_immediate_handler = smbd_impersonate_debug_after_immediate_handler,
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.before_signal_handler = smbd_impersonate_debug_before_signal_handler,
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.after_signal_handler = smbd_impersonate_debug_after_signal_handler,
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};
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struct tevent_context *_smbd_impersonate_debug_create(struct tevent_context *main_ev,
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const char *name,
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int dbg_lvl,
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const char *location)
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{
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struct tevent_context *wrap_ev = NULL;
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struct smbd_impersonate_debug_state *state = NULL;
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wrap_ev = tevent_context_wrapper_create(main_ev,
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main_ev,
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&smbd_impersonate_debug_ops,
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&state,
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struct smbd_impersonate_debug_state);
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if (wrap_ev == NULL) {
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return NULL;
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}
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state->name = name;
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state->dbg_lvl = dbg_lvl;
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DEBUG(state->dbg_lvl, (
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"%s: name[%s] wrap_ev[%p] state[%p] main_ev[%p] location[%s]\n",
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__func__, state->name, wrap_ev, state, main_ev, location));
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return wrap_ev;
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}
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/* what user is current? */
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extern struct current_user current_user;
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