initiate T38 negotiation in FaxSend; use channel variables; other stuff too

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@139345 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_receivefax.c

+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2008, Digium, Inc.
+ *
+ * Dwayne M. Hubbard <dhubbard@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief ReceiveFax application for res_fax
+ *
+ * \author\verbatim Dwayne M. Hubbard <dhubbard@digium.com> \endverbatim
+ * 
+ * This is a ReceiveFax application for use with res_fax.  This is probably
+ * a throw away application, once res_fax works, it should probably be
+ * merged with app_fax.c
+ *
+ * \ingroup applications
+ */
+
+/*** MODULEINFO
+	<defaultenabled>yes</defaultenabled>
+ ***/
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include "asterisk/file.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/module.h"
+#include "asterisk/lock.h"
+#include "asterisk/app.h"
+#include "asterisk/res_fax.h"
+
+static char *app = "ReceiveFax";
+static char *synopsis = 
+"ReceiveFax application for res_fax.";
+static char *descrip = "This application is a ?temporary? ReceiveFax application.\n"
+ " It uses the res_fax module.\n";
+
+enum {
+	OPTION_A = (1 << 0),
+	OPTION_B = (1 << 1),
+	OPTION_C = (1 << 2),
+} option_flags;
+
+enum {
+	OPTION_ARG_B = 0,
+	OPTION_ARG_C = 1,
+	/* This *must* be the last value in this enum! */
+	OPTION_ARG_ARRAY_SIZE = 2,
+} option_args;
+
+AST_APP_OPTIONS(app_opts,{
+	AST_APP_OPTION('a', OPTION_A),
+	AST_APP_OPTION_ARG('b', OPTION_B, OPTION_ARG_B),
+	AST_APP_OPTION_ARG('c', OPTION_C, OPTION_ARG_C),
+});
+
+
+static int receivefax_exec(struct ast_channel *chan, void *data)
+{
+	int ms = 1000;
+	int timeout = 5000; /* 5 seconds */
+	int res = 0;
+	struct ast_flags flags;
+	struct ast_frame *frame = NULL;
+	struct ast_fax_session *session;
+	struct ast_fax_requirements *sessionreqs;
+	char *parse, *opts[OPTION_ARG_ARRAY_SIZE];
+	AST_DECLARE_APP_ARGS(args,
+		AST_APP_ARG(dummy);
+		AST_APP_ARG(options);
+	);
+
+	if (ast_strlen_zero(data)) {
+		ast_log(LOG_WARNING, "%s requires an argument (filename[,options])\n", app);
+		return -1;
+	}
+
+	/* set the fax requirements */	
+	sessionreqs = ast_calloc(1, sizeof(*sessionreqs));
+	if (!sessionreqs) {
+		ast_log(LOG_ERROR, "system error\n");
+		return -1;
+	}
+	sessionreqs->type = FAX_SESSION_MULAW;
+	sessionreqs->operation = FAX_SESSION_OP_RECEIVE;
+
+	/* obtain a fax resource that can handle said requirements */
+	session = ast_fax_session_get(sessionreqs);
+	if (!session) {
+		ast_log(LOG_ERROR, "failed to retrieve a fax session that is capable of the session requirements.\n");
+		ast_free(sessionreqs);
+		return -1;
+	}
+	session->headerinfo = ast_strdup(pbx_builtin_getvar_helper(chan, "LOCALHEADERINFO"));
+	session->localstationid = ast_strdup(pbx_builtin_getvar_helper(chan, "LOCALSTATIONID"));
+	session->start(session);
+
+	/* if you feed it, it will fax */	
+	while (ms > 0) {
+		ms = ast_waitfor(chan, ms);
+		if (ms < 0) {
+			/* bad stuff happened */
+			res = ms;
+			break;
+		}
+		if (!ms) {
+			/* nothing happened */
+			if (timeout > 0) {
+				timeout -= 1000;
+				ms = 1000;
+				continue;
+			} else {
+				ast_log(LOG_WARNING, "channel '%s' timed-out waiting to receive the fax.\n", chan->name);
+				break;
+			}
+		}
+		if (!(frame = ast_read(chan))) {
+			ast_log(LOG_DEBUG, "channel '%s' failed to read frames.\n", chan->name);
+			res = -1;
+			break;
+		}
+		ast_frfree(frame);
+	}
+	
+	/* We need to make a copy of the input string if we are going to modify it! */
+	parse = ast_strdupa(data);
+
+	AST_STANDARD_APP_ARGS(args, parse);
+
+	if (args.argc == 2)
+		ast_app_parse_options(app_opts, &flags, opts, args.options);
+
+	if (!ast_strlen_zero(args.dummy)) 
+		ast_log(LOG_NOTICE, "Dummy value is : %s\n", args.dummy);
+
+	if (ast_test_flag(&flags, OPTION_A))
+		ast_log(LOG_NOTICE, "Option A is set\n");
+
+	if (ast_test_flag(&flags, OPTION_B))
+		ast_log(LOG_NOTICE, "Option B is set with : %s\n", opts[OPTION_ARG_B] ? opts[OPTION_ARG_B] : "<unspecified>");
+
+	if (ast_test_flag(&flags, OPTION_C))
+		ast_log(LOG_NOTICE, "Option C is set with : %s\n", opts[OPTION_ARG_C] ? opts[OPTION_ARG_C] : "<unspecified>");
+
+	ast_free(sessionreqs);
+	ast_fax_session_unreference(session);
+	return res;
+}
+
+static int unload_module(void)
+{
+	return ast_unregister_application(app);
+}
+
+static int load_module(void)
+{
+	return ast_register_application(app, receivefax_exec, synopsis, descrip) ? 
+		AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "ReceiveFax Application for res_fax");

apps/app_sendfax.c

+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2008, Digium, Inc.
+ *
+ * Dwayne M. Hubbard <dhubbard@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief SendFax application for res_fax
+ *
+ * \author\verbatim Dwayne M. Hubbard <dhubbard@digium.com> \endverbatim
+ * 
+ * This is a SendFax application for use with res_fax.  This is probably
+ * a throw away application, once res_fax works, it should probably be
+ * merged with app_fax.c
+ *
+ * \ingroup applications
+ */
+
+/*** MODULEINFO
+	<defaultenabled>yes</defaultenabled>
+ ***/
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include "asterisk/file.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/module.h"
+#include "asterisk/lock.h"
+#include "asterisk/app.h"
+#include "asterisk/res_fax.h"
+
+static char *app = "SendFax";
+static char *synopsis = 
+"SendFax application for res_fax.";
+static char *descrip = "This application is a ?temporary? SendFax application.\n"
+ " It uses the res_fax module.\n";
+
+enum {
+	OPTION_A = (1 << 0),
+	OPTION_B = (1 << 1),
+	OPTION_C = (1 << 2),
+} option_flags;
+
+enum {
+	OPTION_ARG_B = 0,
+	OPTION_ARG_C = 1,
+	/* This *must* be the last value in this enum! */
+	OPTION_ARG_ARRAY_SIZE = 2,
+} option_args;
+
+AST_APP_OPTIONS(app_opts,{
+	AST_APP_OPTION('a', OPTION_A),
+	AST_APP_OPTION_ARG('b', OPTION_B, OPTION_ARG_B),
+	AST_APP_OPTION_ARG('c', OPTION_C, OPTION_ARG_C),
+});
+
+
+static int app_exec(struct ast_channel *chan, void *data)
+{
+	int ms = 1000;
+	int timeout = 5000; /* 5 seconds */
+	int res = 0;
+	struct ast_frame *frame = NULL;
+	struct ast_fax_session *session;
+	struct ast_fax_requirements *sessionreqs;
+	enum ast_control_t38 t38control;
+	struct ast_flags flags;
+	char *parse, *opts[OPTION_ARG_ARRAY_SIZE];
+	AST_DECLARE_APP_ARGS(args,
+		AST_APP_ARG(dummy);
+		AST_APP_ARG(options);
+	);
+
+	if (ast_strlen_zero(data)) {
+		ast_log(LOG_WARNING, "%s requires an argument (dummy[,options])\n", app);
+		return -1;
+	}
+
+	/* set the fax requirements */	
+	sessionreqs = ast_calloc(1, sizeof(*sessionreqs));
+	if (!sessionreqs) {
+		ast_log(LOG_ERROR, "system error\n");
+		return -1;
+	}
+	sessionreqs->type = FAX_SESSION_MULAW;
+	sessionreqs->operation = FAX_SESSION_OP_SEND;
+
+	/* obtain a fax resource that can handle said requirements */
+	session = ast_fax_session_get(sessionreqs);
+	if (!session) {
+		ast_log(LOG_ERROR, "failed to retrieve a fax session that is capable of the session requirements.\n");
+		ast_free(sessionreqs);
+		return -1;
+	}
+	session->headerinfo = ast_strdup(pbx_builtin_getvar_helper(chan, "LOCALHEADERINFO"));
+	session->localstationid = ast_strdup(pbx_builtin_getvar_helper(chan, "LOCALSTATIONID"));
+	
+	t38control = AST_T38_REQUEST_NEGOTIATE;
+	ast_indicate_data(chan, AST_CONTROL_T38, &t38control, sizeof(t38control));
+
+	/* if you feed it, it will fax */	
+	while (ms > 0) {
+		ms = ast_waitfor(chan, ms);
+		if (ms < 0) {
+			/* bad stuff happened */
+			res = ms;
+			break;
+		}
+		if (!ms) {
+			/* nothing happened */
+			if (timeout > 0) {
+				timeout -= 1000;
+				ms = 1000;
+				continue;
+			} else {
+				ast_log(LOG_WARNING, "channel '%s' timed-out waiting to receive the fax.\n", chan->name);
+				break;
+			}
+		}
+		if (!(frame = ast_read(chan))) {
+			ast_log(LOG_DEBUG, "channel '%s' failed to read frames.\n", chan->name);
+			res = -1;
+			break;
+		}
+		if (frame->frametype == AST_FRAME_CONTROL && frame->subclass == AST_CONTROL_T38 && frame->datalen == sizeof(enum ast_control_t38)) {
+			t38control =*((enum ast_control_t38 *) frame->data.ptr);
+			if (t38control == AST_T38_NEGOTIATED) {
+				ast_log(LOG_NOTICE, "yay T38 negotiated!\n");
+				session->start(session);
+			} else ast_log(LOG_NOTICE, "T38 control frame: %d\n", t38control);
+		}
+		ast_frfree(frame);
+	}
+	/* We need to make a copy of the input string if we are going to modify it! */
+	parse = ast_strdupa(data);
+
+	AST_STANDARD_APP_ARGS(args, parse);
+
+	if (args.argc == 2)
+		ast_app_parse_options(app_opts, &flags, opts, args.options);
+
+	if (!ast_strlen_zero(args.dummy)) 
+		ast_log(LOG_NOTICE, "Dummy value is : %s\n", args.dummy);
+
+	if (ast_test_flag(&flags, OPTION_A))
+		ast_log(LOG_NOTICE, "Option A is set\n");
+
+	if (ast_test_flag(&flags, OPTION_B))
+		ast_log(LOG_NOTICE, "Option B is set with : %s\n", opts[OPTION_ARG_B] ? opts[OPTION_ARG_B] : "<unspecified>");
+
+	if (ast_test_flag(&flags, OPTION_C))
+		ast_log(LOG_NOTICE, "Option C is set with : %s\n", opts[OPTION_ARG_C] ? opts[OPTION_ARG_C] : "<unspecified>");
+
+	return res;
+}
+
+static int unload_module(void)
+{
+	return ast_unregister_application(app);
+}
+
+static int load_module(void)
+{
+	return ast_register_application(app, app_exec, synopsis, descrip) ? 
+		AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "SendFax Application for res_fax");