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-rw-r--r--ChangeLog8
-rw-r--r--include/asterisk/res_fax.h22
-rw-r--r--res/res_fax.c63
3 files changed, 51 insertions, 42 deletions
diff --git a/ChangeLog b/ChangeLog
index 0a090ff4d..944584713 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,14 @@
* Asterisk 1.8.3-rc2 Released.
------------------------------------------------------------------------
+ r303907 | mnicholson | 2011-01-25 14:56:12 -0600 (Tue, 25 Jan 2011) | 2
+ lines
+
+ Reimplemented fax session reservation to reverse the ABI breakage
+ introduced in r297486.
+ ------------------------------------------------------------------------
+
+ ------------------------------------------------------------------------
r303106 | sruffell | 2011-01-20 13:56:35 -0600 (Thu, 20 Jan 2011) | 15
lines
diff --git a/include/asterisk/res_fax.h b/include/asterisk/res_fax.h
index 70715d58c..9a52115f0 100644
--- a/include/asterisk/res_fax.h
+++ b/include/asterisk/res_fax.h
@@ -58,10 +58,8 @@ enum ast_fax_modems {
/*! \brief current state of a fax session */
enum ast_fax_state {
- /*! reserved state */
- AST_FAX_STATE_RESERVED = 0,
/*! uninitialized state */
- AST_FAX_STATE_UNINITIALIZED,
+ AST_FAX_STATE_UNINITIALIZED = 0,
/*! initialized state */
AST_FAX_STATE_INITIALIZED,
/*! fax resources open state */
@@ -70,6 +68,10 @@ enum ast_fax_state {
AST_FAX_STATE_ACTIVE,
/*! fax session complete */
AST_FAX_STATE_COMPLETE,
+ /*! reserved state */
+ AST_FAX_STATE_RESERVED,
+ /*! inactive state */
+ AST_FAX_STATE_INACTIVE,
};
/*! \brief fax session options */
@@ -186,8 +188,6 @@ struct ast_fax_session {
unsigned long frames_sent;
/*! the fax technology callbacks */
const struct ast_fax_tech *tech;
- /*! the token used to reserve this session */
- struct ast_fax_tech_token *token;
/*! private implementation pointer */
void *tech_pvt;
/*! fax state */
@@ -202,10 +202,6 @@ struct ast_fax_session {
struct ast_fax_debug_info *debug_info;
/*! used to take variable-sized frames in and output frames of an expected size to the fax stack */
struct ast_smoother *smoother;
-
- /*! some flags to track the stat counters for this session */
- unsigned int reserved:1;
- unsigned int active:1;
};
/*! \brief used to register a FAX technology module with res_fax */
@@ -250,14 +246,6 @@ struct ast_fax_tech {
char * (* const cli_show_settings)(int);
};
-/*! \brief used by res_fax to reserve a FAX session */
-struct ast_fax_tech_token {
- /*! the fax technology callbacks */
- const struct ast_fax_tech *tech;
- /*! private implementation pointer */
- void *tech_pvt;
-};
-
/*! \brief register a fax technology */
int ast_fax_tech_register(struct ast_fax_tech *tech);
diff --git a/res/res_fax.c b/res/res_fax.c
index c22bad693..f6dcd0f9b 100644
--- a/res/res_fax.c
+++ b/res/res_fax.c
@@ -638,6 +638,10 @@ const char *ast_fax_state_to_str(enum ast_fax_state state)
return "Active";
case AST_FAX_STATE_COMPLETE:
return "Complete";
+ case AST_FAX_STATE_RESERVED:
+ return "Reserved";
+ case AST_FAX_STATE_INACTIVE:
+ return "Inactive";
default:
ast_log(LOG_WARNING, "unhandled FAX state: %d\n", state);
return "Unknown";
@@ -678,16 +682,15 @@ static unsigned int fax_rate_str_to_int(const char *ratestr)
}
}
-static void fax_session_release(struct ast_fax_session *s)
+static void fax_session_release(struct ast_fax_session *s, struct ast_fax_tech_token *token)
{
- if (s->token) {
- s->tech->release_token(s->token);
- s->token = NULL;
+ if (token) {
+ s->tech->release_token(token);
}
- if (s->reserved) {
+ if (s->state == AST_FAX_STATE_RESERVED) {
ast_atomic_fetchadd_int(&faxregistry.reserved_sessions, -1);
- s->reserved = 0;
+ s->state = AST_FAX_STATE_INACTIVE;
}
}
@@ -697,7 +700,7 @@ static void destroy_session(void *session)
struct ast_fax_session *s = session;
if (s->tech) {
- fax_session_release(s);
+ fax_session_release(s, NULL);
if (s->tech_pvt) {
s->tech->destroy_session(s);
}
@@ -717,16 +720,15 @@ static void destroy_session(void *session)
ast_smoother_free(s->smoother);
}
- if (s->active) {
+ if (s->state != AST_FAX_STATE_INACTIVE) {
ast_atomic_fetchadd_int(&faxregistry.active_sessions, -1);
- s->active = 0;
}
ast_free(s->channame);
ast_free(s->chan_uniqueid);
}
-static struct ast_fax_session *fax_session_reserve(struct ast_fax_session_details *details)
+static struct ast_fax_session *fax_session_reserve(struct ast_fax_session_details *details, struct ast_fax_tech_token **token)
{
struct ast_fax_session *s;
struct fax_module *faxmod;
@@ -736,7 +738,7 @@ static struct ast_fax_session *fax_session_reserve(struct ast_fax_session_detail
return NULL;
}
- s->state = AST_FAX_STATE_RESERVED;
+ s->state = AST_FAX_STATE_INACTIVE;
/* locate a FAX technology module that can handle said requirements
* Note: the requirements have not yet been finalized as T.38
@@ -764,19 +766,19 @@ static struct ast_fax_session *fax_session_reserve(struct ast_fax_session_detail
return s;
}
- if (!(s->token = s->tech->reserve_session(s))) {
+ if (!(*token = s->tech->reserve_session(s))) {
ao2_ref(s, -1);
return NULL;
}
- s->reserved = 1;
+ s->state = AST_FAX_STATE_RESERVED;
ast_atomic_fetchadd_int(&faxregistry.reserved_sessions, 1);
return s;
}
/*! \brief create a FAX session */
-static struct ast_fax_session *fax_session_new(struct ast_fax_session_details *details, struct ast_channel *chan, struct ast_fax_session *reserved)
+static struct ast_fax_session *fax_session_new(struct ast_fax_session_details *details, struct ast_channel *chan, struct ast_fax_session *reserved, struct ast_fax_tech_token *token)
{
struct ast_fax_session *s = NULL;
struct fax_module *faxmod;
@@ -786,9 +788,9 @@ static struct ast_fax_session *fax_session_new(struct ast_fax_session_details *d
s = reserved;
ao2_ref(reserved, +1);
- if (s->reserved) {
+ if (s->state == AST_FAX_STATE_RESERVED) {
ast_atomic_fetchadd_int(&faxregistry.reserved_sessions, -1);
- s->reserved = 0;
+ s->state = AST_FAX_STATE_UNINITIALIZED;
}
}
@@ -796,18 +798,19 @@ static struct ast_fax_session *fax_session_new(struct ast_fax_session_details *d
return NULL;
}
- s->active = 1;
ast_atomic_fetchadd_int(&faxregistry.active_sessions, 1);
s->state = AST_FAX_STATE_UNINITIALIZED;
if (details->option.debug && (details->caps & AST_FAX_TECH_AUDIO)) {
if (!(s->debug_info = ast_calloc(1, sizeof(*(s->debug_info))))) {
+ fax_session_release(s, token);
ao2_ref(s, -1);
return NULL;
}
if (!(s->debug_info->dsp = ast_dsp_new())) {
ast_free(s->debug_info);
s->debug_info = NULL;
+ fax_session_release(s, token);
ao2_ref(s, -1);
return NULL;
}
@@ -815,11 +818,13 @@ static struct ast_fax_session *fax_session_new(struct ast_fax_session_details *d
}
if (!(s->channame = ast_strdup(chan->name))) {
+ fax_session_release(s, token);
ao2_ref(s, -1);
return NULL;
}
if (!(s->chan_uniqueid = ast_strdup(chan->uniqueid))) {
+ fax_session_release(s, token);
ao2_ref(s, -1);
return NULL;
}
@@ -830,7 +835,7 @@ static struct ast_fax_session *fax_session_new(struct ast_fax_session_details *d
details->id = s->id = ast_atomic_fetchadd_int(&faxregistry.nextsessionname, 1);
- if (!s->tech) {
+ if (!token) {
/* locate a FAX technology module that can handle said requirements */
AST_RWLIST_RDLOCK(&faxmodules);
AST_RWLIST_TRAVERSE(&faxmodules, faxmod, list) {
@@ -851,7 +856,7 @@ static struct ast_fax_session *fax_session_new(struct ast_fax_session_details *d
}
}
- if (!(s->tech_pvt = s->tech->new_session(s, s->token))) {
+ if (!(s->tech_pvt = s->tech->new_session(s, token))) {
ast_log(LOG_ERROR, "FAX session failed to initialize.\n");
ao2_ref(s, -1);
return NULL;
@@ -1116,7 +1121,7 @@ static struct ast_control_t38_parameters our_t38_parameters = {
};
/*! \brief this is the generic FAX session handling function */
-static int generic_fax_exec(struct ast_channel *chan, struct ast_fax_session_details *details, struct ast_fax_session *reserved)
+static int generic_fax_exec(struct ast_channel *chan, struct ast_fax_session_details *details, struct ast_fax_session *reserved, struct ast_fax_tech_token *token)
{
int ms;
int timeout = RES_FAX_TIMEOUT;
@@ -1134,7 +1139,7 @@ static int generic_fax_exec(struct ast_channel *chan, struct ast_fax_session_det
chancount = 1;
/* create the FAX session */
- if (!(fax = fax_session_new(details, chan, reserved))) {
+ if (!(fax = fax_session_new(details, chan, reserved, token))) {
ast_log(LOG_ERROR, "Can't create a FAX session, FAX attempt failed.\n");
report_fax_status(chan, details, "No Available Resource");
return -1;
@@ -1533,6 +1538,7 @@ static int receivefax_exec(struct ast_channel *chan, const char *data)
int channel_alive;
struct ast_fax_session_details *details;
struct ast_fax_session *s;
+ struct ast_fax_tech_token *token = NULL;
struct ast_fax_document *doc;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(filename);
@@ -1676,7 +1682,7 @@ static int receivefax_exec(struct ast_channel *chan, const char *data)
details->option.allow_audio = AST_FAX_OPTFLAG_TRUE;
}
- if (!(s = fax_session_reserve(details))) {
+ if (!(s = fax_session_reserve(details, &token))) {
ast_atomic_fetchadd_int(&faxregistry.fax_failures, 1);
ast_string_field_set(details, resultstr, "error reserving fax session");
set_channel_variables(chan, details);
@@ -1692,6 +1698,7 @@ static int receivefax_exec(struct ast_channel *chan, const char *data)
ast_string_field_set(details, resultstr, "error answering channel");
set_channel_variables(chan, details);
ast_log(LOG_WARNING, "Channel '%s' failed answer attempt.\n", chan->name);
+ fax_session_release(s, token);
ao2_ref(s, -1);
ao2_ref(details, -1);
return -1;
@@ -1703,6 +1710,7 @@ static int receivefax_exec(struct ast_channel *chan, const char *data)
ast_string_field_set(details, error, "T38_NEG_ERROR");
ast_string_field_set(details, resultstr, "error negotiating T.38");
set_channel_variables(chan, details);
+ fax_session_release(s, token);
ao2_ref(s, -1);
ao2_ref(details, -1);
return -1;
@@ -1714,6 +1722,7 @@ static int receivefax_exec(struct ast_channel *chan, const char *data)
ast_string_field_set(details, error, "T38_NEG_ERROR");
ast_string_field_set(details, resultstr, "error negotiating T.38");
set_channel_variables(chan, details);
+ fax_session_release(s, token);
ao2_ref(s, -1);
ao2_ref(details, -1);
ast_log(LOG_ERROR, "error initializing channel '%s' in T.38 mode\n", chan->name);
@@ -1723,7 +1732,7 @@ static int receivefax_exec(struct ast_channel *chan, const char *data)
details->option.send_ced = 1;
}
- if ((channel_alive = generic_fax_exec(chan, details, s)) < 0) {
+ if ((channel_alive = generic_fax_exec(chan, details, s, token)) < 0) {
ast_atomic_fetchadd_int(&faxregistry.fax_failures, 1);
}
@@ -2000,6 +2009,7 @@ static int sendfax_exec(struct ast_channel *chan, const char *data)
int channel_alive, file_count;
struct ast_fax_session_details *details;
struct ast_fax_session *s;
+ struct ast_fax_tech_token *token = NULL;
struct ast_fax_document *doc;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(filenames);
@@ -2167,7 +2177,7 @@ static int sendfax_exec(struct ast_channel *chan, const char *data)
details->option.request_t38 = AST_FAX_OPTFLAG_TRUE;
}
- if (!(s = fax_session_reserve(details))) {
+ if (!(s = fax_session_reserve(details, &token))) {
ast_atomic_fetchadd_int(&faxregistry.fax_failures, 1);
ast_string_field_set(details, resultstr, "error reserving fax session");
set_channel_variables(chan, details);
@@ -2183,6 +2193,7 @@ static int sendfax_exec(struct ast_channel *chan, const char *data)
ast_string_field_set(details, resultstr, "error answering channel");
set_channel_variables(chan, details);
ast_log(LOG_WARNING, "Channel '%s' failed answer attempt.\n", chan->name);
+ fax_session_release(s, token);
ao2_ref(s, -1);
ao2_ref(details, -1);
return -1;
@@ -2194,6 +2205,7 @@ static int sendfax_exec(struct ast_channel *chan, const char *data)
ast_string_field_set(details, error, "T38_NEG_ERROR");
ast_string_field_set(details, resultstr, "error negotiating T.38");
set_channel_variables(chan, details);
+ fax_session_release(s, token);
ao2_ref(s, -1);
ao2_ref(details, -1);
return -1;
@@ -2205,6 +2217,7 @@ static int sendfax_exec(struct ast_channel *chan, const char *data)
ast_string_field_set(details, error, "T38_NEG_ERROR");
ast_string_field_set(details, resultstr, "error negotiating T.38");
set_channel_variables(chan, details);
+ fax_session_release(s, token);
ao2_ref(s, -1);
ao2_ref(details, -1);
ast_log(LOG_ERROR, "error initializing channel '%s' in T.38 mode\n", chan->name);
@@ -2214,7 +2227,7 @@ static int sendfax_exec(struct ast_channel *chan, const char *data)
details->option.send_cng = 1;
}
- if ((channel_alive = generic_fax_exec(chan, details, s)) < 0) {
+ if ((channel_alive = generic_fax_exec(chan, details, s, token)) < 0) {
ast_atomic_fetchadd_int(&faxregistry.fax_failures, 1);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 08:17:16 +0000