From: Joshua Colp Date: Sat, 13 May 2017 16:40:00 +0000 (+0000) Subject: asterisk: Audit locking of channel when manipulating flags. X-Git-Tag: 13.17.0-rc1~64^2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=161820396495a549c9a378d32136cbb5f28ef2af;p=thirdparty%2Fasterisk.git asterisk: Audit locking of channel when manipulating flags. When manipulating flags on a channel the channel has to be locked to guarantee that nothing else is also manipulating the flags. This change introduces locking where necessary to guarantee this. It also adds helper functions that manipulate channel flags and lock to reduce repeated code. ASTERISK-26789 Change-Id: I489280662dba0f4c50981bfc5b5a7073fef2db10 --- diff --git a/apps/app_chanspy.c b/apps/app_chanspy.c index 608eb6be18..2a472bf440 100644 --- a/apps/app_chanspy.c +++ b/apps/app_chanspy.c @@ -676,9 +676,7 @@ static int channel_spy(struct ast_channel *chan, struct ast_autochan *spyee_auto } } - ast_channel_lock(chan); - ast_set_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY); - ast_channel_unlock(chan); + ast_channel_set_flag(chan, AST_FLAG_END_DTMF_ONLY); csth.volfactor = *volfactor; @@ -808,9 +806,7 @@ static int channel_spy(struct ast_channel *chan, struct ast_autochan *spyee_auto else ast_deactivate_generator(chan); - ast_channel_lock(chan); - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY); - ast_channel_unlock(chan); + ast_channel_clear_flag(chan, AST_FLAG_END_DTMF_ONLY); if (ast_test_flag(flags, OPTION_WHISPER | OPTION_BARGE | OPTION_DTMF_SWITCH_MODES)) { ast_audiohook_lock(&csth.whisper_audiohook); @@ -904,7 +900,7 @@ static int common_exec(struct ast_channel *chan, struct ast_flags *flags, if (ast_channel_state(chan) != AST_STATE_UP) ast_answer(chan); - ast_set_flag(ast_channel_flags(chan), AST_FLAG_SPYING); /* so nobody can spy on us while we are spying */ + ast_channel_set_flag(chan, AST_FLAG_SPYING); waitms = 100; @@ -917,7 +913,7 @@ static int common_exec(struct ast_channel *chan, struct ast_flags *flags, if (!res) res = ast_waitstream(chan, ""); else if (res < 0) { - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_SPYING); + ast_channel_clear_flag(chan, AST_FLAG_SPYING); break; } if (!ast_strlen_zero(exitcontext)) { @@ -960,7 +956,7 @@ static int common_exec(struct ast_channel *chan, struct ast_flags *flags, res = ast_waitfordigit(chan, waitms); if (res < 0) { iter = ast_channel_iterator_destroy(iter); - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_SPYING); + ast_channel_clear_flag(chan, AST_FLAG_SPYING); break; } if (!ast_strlen_zero(exitcontext)) { @@ -1179,7 +1175,7 @@ static int common_exec(struct ast_channel *chan, struct ast_flags *flags, } exit: - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_SPYING); + ast_channel_clear_flag(chan, AST_FLAG_SPYING); ast_channel_setoption(chan, AST_OPTION_TXGAIN, &zero_volume, sizeof(zero_volume), 0); diff --git a/apps/app_dial.c b/apps/app_dial.c index 250340579f..9f77cd880d 100644 --- a/apps/app_dial.c +++ b/apps/app_dial.c @@ -2870,7 +2870,7 @@ static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast ast_log(LOG_ERROR, "error streaming file '%s' to callee\n", opt_args[OPT_ARG_ANNOUNCE]); } - ast_set_flag(ast_channel_flags(peer), AST_FLAG_END_DTMF_ONLY); + ast_channel_set_flag(peer, AST_FLAG_END_DTMF_ONLY); while (ast_channel_stream(peer)) { int ms; @@ -2934,13 +2934,13 @@ static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast } ast_sched_runq(ast_channel_sched(peer)); } - ast_clear_flag(ast_channel_flags(peer), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(peer, AST_FLAG_END_DTMF_ONLY); } if (chan && peer && ast_test_flag64(&opts, OPT_GOTO) && !ast_strlen_zero(opt_args[OPT_ARG_GOTO])) { /* chan and peer are going into the PBX; as such neither are considered * outgoing channels any longer */ - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_OUTGOING); + ast_channel_clear_flag(chan, AST_FLAG_OUTGOING); ast_replace_subargument_delimiter(opt_args[OPT_ARG_GOTO]); ast_parseable_goto(chan, opt_args[OPT_ARG_GOTO]); diff --git a/apps/app_disa.c b/apps/app_disa.c index 824e8fe55d..dbdad94bec 100644 --- a/apps/app_disa.c +++ b/apps/app_disa.c @@ -210,7 +210,7 @@ static int disa_exec(struct ast_channel *chan, const char *data) play_dialtone(chan, args.mailbox); - ast_set_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY); + ast_channel_set_flag(chan, AST_FLAG_END_DTMF_ONLY); for (;;) { /* if outa time, give em reorder */ @@ -226,7 +226,7 @@ static int disa_exec(struct ast_channel *chan, const char *data) } if (!(f = ast_read(chan))) { - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(chan, AST_FLAG_END_DTMF_ONLY); return -1; } @@ -234,7 +234,7 @@ static int disa_exec(struct ast_channel *chan, const char *data) if (f->data.uint32) ast_channel_hangupcause_set(chan, f->data.uint32); ast_frfree(f); - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(chan, AST_FLAG_END_DTMF_ONLY); return -1; } @@ -263,7 +263,7 @@ static int disa_exec(struct ast_channel *chan, const char *data) fp = fopen(args.passcode,"r"); if (!fp) { ast_log(LOG_WARNING,"DISA password file %s not found on chan %s\n",args.passcode,ast_channel_name(chan)); - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(chan, AST_FLAG_END_DTMF_ONLY); return -1; } pwline[0] = 0; @@ -359,7 +359,7 @@ static int disa_exec(struct ast_channel *chan, const char *data) } } - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(chan, AST_FLAG_END_DTMF_ONLY); if (k == 3) { int recheck = 0; diff --git a/apps/app_dumpchan.c b/apps/app_dumpchan.c index 1a5a4469a5..14164388d7 100644 --- a/apps/app_dumpchan.c +++ b/apps/app_dumpchan.c @@ -90,8 +90,6 @@ static int serialize_showchan(struct ast_channel *c, char *buf, size_t size) ast_channel_lock(c); bridge = ast_channel_get_bridge(c); - ast_channel_unlock(c); - snprintf(buf,size, "Name= %s\n" "Type= %s\n" @@ -168,7 +166,7 @@ static int serialize_showchan(struct ast_channel *c, char *buf, size_t size) ast_channel_appl(c) ? ast_channel_appl(c) : "(N/A)", ast_channel_data(c) ? S_OR(ast_channel_data(c), "(Empty)") : "(None)", (ast_test_flag(ast_channel_flags(c), AST_FLAG_BLOCKING) ? ast_channel_blockproc(c) : "(Not Blocking)")); - + ast_channel_unlock(c); ao2_cleanup(bridge); return 0; } diff --git a/apps/app_externalivr.c b/apps/app_externalivr.c index 9cb8839db7..b661a2ec90 100644 --- a/apps/app_externalivr.c +++ b/apps/app_externalivr.c @@ -645,9 +645,9 @@ static int eivr_comm(struct ast_channel *chan, struct ivr_localuser *u, setvbuf(eivr_errors, NULL, _IONBF, 0); } - while (1) { - if (ast_test_flag(ast_channel_flags(chan), AST_FLAG_ZOMBIE)) { - ast_chan_log(LOG_ERROR, chan, "Is a zombie\n"); + while (1) { + if (ast_test_flag(ast_channel_flags(chan), AST_FLAG_ZOMBIE)) { + ast_chan_log(LOG_ERROR, chan, "Is a zombie\n"); break; } if (!hangup_info_sent && !(ast_test_flag(&flags, run_dead)) && ast_check_hangup(chan)) { diff --git a/include/asterisk/channel.h b/include/asterisk/channel.h index 9acd820e53..393c020fc9 100644 --- a/include/asterisk/channel.h +++ b/include/asterisk/channel.h @@ -4329,6 +4329,31 @@ void ast_channel_dialed_causes_clear(const struct ast_channel *chan); struct ast_flags *ast_channel_flags(struct ast_channel *chan); +/*! + * \since 13.17.0 + * \brief Set a flag on a channel + * + * \param chan The channel to set the flag on + * \param flag The flag to set + * + * \note This will lock the channel internally. If the channel is already + * locked it is still safe to call. + */ + +void ast_channel_set_flag(struct ast_channel *chan, unsigned int flag); + +/*! + * \since 13.17.0 + * \param Clear a flag on a channel + * + * \param chan The channel to clear the flag from + * \param flag The flag to clear + * + * \note This will lock the channel internally. If the channel is already + * locked it is still safe to call. + */ +void ast_channel_clear_flag(struct ast_channel *chan, unsigned int flag); + /*! * \since 12.4.0 * \brief Return whether or not any manager variables have been set diff --git a/main/autoservice.c b/main/autoservice.c index 305ab23b10..f353f0e0cf 100644 --- a/main/autoservice.c +++ b/main/autoservice.c @@ -300,11 +300,11 @@ int ast_autoservice_stop(struct ast_channel *chan) res = 0; } + ast_channel_lock(chan); if (!as->orig_end_dtmf_flag) { ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY); } - ast_channel_lock(chan); while ((f = AST_LIST_REMOVE_HEAD(&as->deferred_frames, frame_list))) { if (!((1 << f->frametype) & as->ignore_frame_types)) { ast_queue_frame_head(chan, f); diff --git a/main/bridge_after.c b/main/bridge_after.c index a41f8a5483..1208b57b8f 100644 --- a/main/bridge_after.c +++ b/main/bridge_after.c @@ -484,7 +484,7 @@ int ast_bridge_setup_after_goto(struct ast_channel *chan) } } else if (!ast_check_hangup(chan)) { /* Clear the outgoing flag */ - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_OUTGOING); + ast_channel_clear_flag(chan, AST_FLAG_OUTGOING); if (after_bridge->specific) { goto_failed = ast_explicit_goto(chan, after_bridge->context, diff --git a/main/bridge_channel.c b/main/bridge_channel.c index b466b3c6ad..eba5ae40ae 100644 --- a/main/bridge_channel.c +++ b/main/bridge_channel.c @@ -2092,7 +2092,7 @@ void bridge_channel_internal_pull(struct ast_bridge_channel *bridge_channel) && (ast_channel_is_leaving_bridge(bridge_channel->chan) || bridge_channel->state == BRIDGE_CHANNEL_STATE_WAIT)) { ast_debug(2, "Channel %s will survive this bridge; clearing outgoing (dialed) flag\n", ast_channel_name(bridge_channel->chan)); - ast_clear_flag(ast_channel_flags(bridge_channel->chan), AST_FLAG_OUTGOING); + ast_channel_clear_flag(bridge_channel->chan, AST_FLAG_OUTGOING); } bridge->reconfigured = 1; diff --git a/main/channel.c b/main/channel.c index 4192c00f20..5aaeab9d29 100644 --- a/main/channel.c +++ b/main/channel.c @@ -1296,8 +1296,10 @@ int ast_channel_defer_dtmf(struct ast_channel *chan) int pre = 0; if (chan) { + ast_channel_lock(chan); pre = ast_test_flag(ast_channel_flags(chan), AST_FLAG_DEFER_DTMF); ast_set_flag(ast_channel_flags(chan), AST_FLAG_DEFER_DTMF); + ast_channel_unlock(chan); } return pre; } @@ -1305,8 +1307,9 @@ int ast_channel_defer_dtmf(struct ast_channel *chan) /*! \brief Unset defer DTMF flag on channel */ void ast_channel_undefer_dtmf(struct ast_channel *chan) { - if (chan) - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_DEFER_DTMF); + if (chan) { + ast_channel_clear_flag(chan, AST_FLAG_DEFER_DTMF); + } } struct ast_channel *ast_channel_callback(ao2_callback_data_fn *cb_fn, void *arg, @@ -3518,7 +3521,7 @@ int ast_waitfordigit_full(struct ast_channel *c, int timeout_ms, int audiofd, in return -1; /* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */ - ast_set_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_set_flag(c, AST_FLAG_END_DTMF_ONLY); /* Wait for a digit, no more than timeout_ms milliseconds total. * Or, wait indefinitely if timeout_ms is <0. @@ -3537,12 +3540,12 @@ int ast_waitfordigit_full(struct ast_channel *c, int timeout_ms, int audiofd, in if (errno == 0 || errno == EINTR) continue; ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return -1; } else if (outfd > -1) { /* The FD we were watching has something waiting */ ast_log(LOG_WARNING, "The FD we were waiting for has something waiting. Waitfordigit returning numeric 1\n"); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return 1; } else if (rchan) { int res; @@ -3556,13 +3559,13 @@ int ast_waitfordigit_full(struct ast_channel *c, int timeout_ms, int audiofd, in case AST_FRAME_DTMF_END: res = f->subclass.integer; ast_frfree(f); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return res; case AST_FRAME_CONTROL: switch (f->subclass.integer) { case AST_CONTROL_HANGUP: ast_frfree(f); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return -1; case AST_CONTROL_STREAM_STOP: case AST_CONTROL_STREAM_SUSPEND: @@ -3573,7 +3576,7 @@ int ast_waitfordigit_full(struct ast_channel *c, int timeout_ms, int audiofd, in * that perform stream control will handle this. */ res = f->subclass.integer; ast_frfree(f); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return res; case AST_CONTROL_PVT_CAUSE_CODE: case AST_CONTROL_RINGING: @@ -3608,7 +3611,7 @@ int ast_waitfordigit_full(struct ast_channel *c, int timeout_ms, int audiofd, in } } - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return 0; /* Time is up */ } @@ -5873,9 +5876,9 @@ struct ast_channel *ast_call_forward(struct ast_channel *caller, struct ast_chan } else if (caller) { /* no outgoing helper so use caller if available */ call_forward_inherit(new_chan, caller, orig); } - ast_set_flag(ast_channel_flags(new_chan), AST_FLAG_ORIGINATED); ast_channel_lock_both(orig, new_chan); + ast_channel_set_flag(new_chan, AST_FLAG_ORIGINATED); pbx_builtin_setvar_helper(new_chan, "FORWARDERNAME", forwarder); ast_party_connected_line_copy(ast_channel_connected(new_chan), ast_channel_connected(orig)); ast_party_redirecting_copy(ast_channel_redirecting(new_chan), ast_channel_redirecting(orig)); @@ -10996,3 +10999,18 @@ enum ast_channel_error ast_channel_errno(void) { return ast_channel_internal_errno(); } + +void ast_channel_set_flag(struct ast_channel *chan, unsigned int flag) +{ + ast_channel_lock(chan); + ast_set_flag(ast_channel_flags(chan), flag); + ast_channel_unlock(chan); +} + +void ast_channel_clear_flag(struct ast_channel *chan, unsigned int flag) +{ + ast_channel_lock(chan); + ast_clear_flag(ast_channel_flags(chan), flag); + ast_channel_unlock(chan); +} + diff --git a/main/file.c b/main/file.c index 11617fb7fa..bb1db3ee64 100644 --- a/main/file.c +++ b/main/file.c @@ -1545,7 +1545,7 @@ static int waitstream_core(struct ast_channel *c, reverse = ""; /* Switch the channel to end DTMF frame only. waitstream_core doesn't care about the start of DTMF. */ - ast_set_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_set_flag(c, AST_FLAG_END_DTMF_ONLY); if (ast_test_flag(ast_channel_flags(c), AST_FLAG_MASQ_NOSTREAM)) orig_chan_name = ast_strdupa(ast_channel_name(c)); @@ -1577,7 +1577,7 @@ static int waitstream_core(struct ast_channel *c, res = ast_waitfor(c, ms); if (res < 0) { ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno)); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return res; } } else { @@ -1588,11 +1588,11 @@ static int waitstream_core(struct ast_channel *c, if (errno == EINTR) continue; ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return -1; } else if (outfd > -1) { /* this requires cmdfd set */ /* The FD we were watching has something waiting */ - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return 1; } /* if rchan is set, it is 'c' */ @@ -1601,7 +1601,7 @@ static int waitstream_core(struct ast_channel *c, if (res > 0) { struct ast_frame *fr = ast_read(c); if (!fr) { - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return -1; } switch (fr->frametype) { @@ -1612,7 +1612,7 @@ static int waitstream_core(struct ast_channel *c, S_COR(ast_channel_caller(c)->id.number.valid, ast_channel_caller(c)->id.number.str, NULL))) { res = fr->subclass.integer; ast_frfree(fr); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return res; } } else { @@ -1628,7 +1628,7 @@ static int waitstream_core(struct ast_channel *c, "Break"); ast_frfree(fr); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return res; } } @@ -1645,7 +1645,7 @@ static int waitstream_core(struct ast_channel *c, "Break"); res = fr->subclass.integer; ast_frfree(fr); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return res; case AST_CONTROL_STREAM_REVERSE: if (!skip_ms) { @@ -1663,7 +1663,7 @@ static int waitstream_core(struct ast_channel *c, case AST_CONTROL_BUSY: case AST_CONTROL_CONGESTION: ast_frfree(fr); - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return -1; case AST_CONTROL_RINGING: case AST_CONTROL_ANSWER: @@ -1700,7 +1700,7 @@ static int waitstream_core(struct ast_channel *c, ast_sched_runq(ast_channel_sched(c)); } - ast_clear_flag(ast_channel_flags(c), AST_FLAG_END_DTMF_ONLY); + ast_channel_clear_flag(c, AST_FLAG_END_DTMF_ONLY); return (err || ast_channel_softhangup_internal_flag(c)) ? -1 : 0; } diff --git a/main/manager.c b/main/manager.c index 6f57f056ed..6db52b8b4d 100644 --- a/main/manager.c +++ b/main/manager.c @@ -4819,14 +4819,10 @@ static int action_redirect(struct mansession *s, const struct message *m) /* Release the bridge wait. */ if (chan1_wait) { - ast_channel_lock(chan); - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_BRIDGE_DUAL_REDIRECT_WAIT); - ast_channel_unlock(chan); + ast_channel_clear_flag(chan, AST_FLAG_BRIDGE_DUAL_REDIRECT_WAIT); } if (chan2_wait) { - ast_channel_lock(chan2); - ast_clear_flag(ast_channel_flags(chan2), AST_FLAG_BRIDGE_DUAL_REDIRECT_WAIT); - ast_channel_unlock(chan2); + ast_channel_clear_flag(chan, AST_FLAG_BRIDGE_DUAL_REDIRECT_WAIT); } chan2 = ast_channel_unref(chan2); diff --git a/main/pbx.c b/main/pbx.c index b4089abd71..cfc5f7f9f1 100644 --- a/main/pbx.c +++ b/main/pbx.c @@ -4257,8 +4257,10 @@ static enum ast_pbx_result __ast_pbx_run(struct ast_channel *c, ast_channel_pbx(c)->rtimeoutms = 10000; ast_channel_pbx(c)->dtimeoutms = 5000; + ast_channel_lock(c); autoloopflag = ast_test_flag(ast_channel_flags(c), AST_FLAG_IN_AUTOLOOP); /* save value to restore at the end */ ast_set_flag(ast_channel_flags(c), AST_FLAG_IN_AUTOLOOP); + ast_channel_unlock(c); if (ast_strlen_zero(ast_channel_exten(c))) { /* If not successful fall back to 's' - but only if there is no given exten */ @@ -4503,8 +4505,10 @@ static enum ast_pbx_result __ast_pbx_run(struct ast_channel *c, ast_pbx_hangup_handler_run(c); } + ast_channel_lock(c); ast_set2_flag(ast_channel_flags(c), autoloopflag, AST_FLAG_IN_AUTOLOOP); ast_clear_flag(ast_channel_flags(c), AST_FLAG_BRIDGE_HANGUP_RUN); /* from one round to the next, make sure this gets cleared */ + ast_channel_unlock(c); pbx_destroy(ast_channel_pbx(c)); ast_channel_pbx_set(c, NULL); diff --git a/res/res_agi.c b/res/res_agi.c index cd0d621eb1..4b60daedfb 100644 --- a/res/res_agi.c +++ b/res/res_agi.c @@ -3121,12 +3121,14 @@ static int handle_exec(struct ast_channel *chan, AGI *agi, int argc, const char ast_verb(3, "AGI Script Executing Application: (%s) Options: (%s)\n", argv[1], argc >= 3 ? argv[2] : ""); if ((app_to_exec = pbx_findapp(argv[1]))) { + ast_channel_lock(chan); if (!(workaround = ast_test_flag(ast_channel_flags(chan), AST_FLAG_DISABLE_WORKAROUNDS))) { ast_set_flag(ast_channel_flags(chan), AST_FLAG_DISABLE_WORKAROUNDS); } + ast_channel_unlock(chan); res = pbx_exec(chan, app_to_exec, argc == 2 ? "" : argv[2]); if (!workaround) { - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_DISABLE_WORKAROUNDS); + ast_channel_clear_flag(chan, AST_FLAG_DISABLE_WORKAROUNDS); } } else { ast_log(LOG_WARNING, "Could not find application (%s)\n", argv[1]); diff --git a/res/res_musiconhold.c b/res/res_musiconhold.c index 9d6194170c..c52c964288 100644 --- a/res/res_musiconhold.c +++ b/res/res_musiconhold.c @@ -1548,8 +1548,10 @@ static int local_ast_moh_start(struct ast_channel *chan, const char *mclass, con } } if (!res) { + ast_channel_lock(chan); ast_channel_latest_musicclass_set(chan, mohclass->name); ast_set_flag(ast_channel_flags(chan), AST_FLAG_MOH); + ast_channel_unlock(chan); } mohclass = mohclass_unref(mohclass, "unreffing local reference to mohclass in local_ast_moh_start"); @@ -1559,10 +1561,10 @@ static int local_ast_moh_start(struct ast_channel *chan, const char *mclass, con static void local_ast_moh_stop(struct ast_channel *chan) { - ast_clear_flag(ast_channel_flags(chan), AST_FLAG_MOH); ast_deactivate_generator(chan); ast_channel_lock(chan); + ast_clear_flag(ast_channel_flags(chan), AST_FLAG_MOH); if (ast_channel_music_state(chan)) { if (ast_channel_stream(chan)) { ast_closestream(ast_channel_stream(chan));