linphonecore.c 231 KB
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/*
linphone
Copyright (C) 2000  Simon MORLAT (simon.morlat@linphone.org)

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "linphonecore.h"
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#include "sipsetup.h"
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#include "lpconfig.h"
#include "private.h"
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#include "quality_reporting.h"
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#include <math.h>
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#include <sys/types.h>
#include <sys/stat.h>
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#include <ortp/telephonyevents.h>
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#include <ortp/zrtp.h>
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#include "mediastreamer2/mediastream.h"
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#include "mediastreamer2/mseventqueue.h"
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#include "mediastreamer2/msvolume.h"
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#include "mediastreamer2/msequalizer.h"
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#include "mediastreamer2/dtmfgen.h"
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#ifdef INET6
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#ifndef WIN32
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#include <netdb.h>
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#endif
#endif

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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#ifndef ANDROID /*on Android LIBLINPHONE version is passed from root Makefile*/
	#include "liblinphone_gitversion.h"
#endif
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#else
#ifndef LIBLINPHONE_GIT_VERSION
#define LIBLINPHONE_GIT_VERSION "unknown"
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#endif
#endif

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#ifdef __APPLE__
#include "TargetConditionals.h"
#endif
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#ifdef HAVE_ZLIB
#ifdef WIN32
#include <fcntl.h>
#include <io.h>
#define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
#else
#define SET_BINARY_MODE(file)
#endif
#include <zlib.h>
#endif

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/*#define UNSTANDART_GSM_11K 1*/
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#define ROOT_CA_FILE PACKAGE_DATA_DIR "/linphone/rootca.pem"

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static const char *liblinphone_version=
#ifdef LIBLINPHONE_GIT_VERSION
	LIBLINPHONE_GIT_VERSION
#else
	LIBLINPHONE_VERSION
#endif
;
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static OrtpLogFunc liblinphone_log_func = NULL;
static bool_t liblinphone_log_collection_enabled = FALSE;
static const char * liblinphone_log_collection_path = ".";
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static ortp_mutex_t liblinphone_log_collection_mutex;
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static bool_t liblinphone_serialize_logs = FALSE;
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static void set_network_reachable(LinphoneCore* lc,bool_t isReachable, time_t curtime);
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static void linphone_core_run_hooks(LinphoneCore *lc);
static void linphone_core_free_hooks(LinphoneCore *lc);
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#include "enum.h"
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#include "contact_providers_priv.h"
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const char *linphone_core_get_nat_address_resolved(LinphoneCore *lc);
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static void toggle_video_preview(LinphoneCore *lc, bool_t val);

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#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
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#define SOUNDS_PREFIX
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#else
#define SOUNDS_PREFIX "Assets/Sounds/"
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#endif
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/* relative path where is stored local ring*/
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#define LOCAL_RING SOUNDS_PREFIX "rings/oldphone.wav"
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/* same for remote ring (ringback)*/
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#define REMOTE_RING SOUNDS_PREFIX "ringback.wav"
#define HOLD_MUSIC SOUNDS_PREFIX "rings/toy-mono.wav"
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extern SalCallbacks linphone_sal_callbacks;
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void lc_callback_obj_init(LCCallbackObj *obj,LinphoneCoreCbFunc func,void* ud)
{
  obj->_func=func;
  obj->_user_data=ud;
}

int lc_callback_obj_invoke(LCCallbackObj *obj, LinphoneCore *lc){
	if (obj->_func!=NULL) obj->_func(lc,obj->_user_data);
	return 0;
}

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/**
 * Returns TRUE if the LinphoneCall asked to autoanswer
 *
**/
bool_t linphone_call_asked_to_autoanswer(LinphoneCall *call){
	//return TRUE if the unique(for the moment) incoming call asked to be autoanswered
	if(call)
		return sal_call_autoanswer_asked(call->op);
	else
		return FALSE;
}

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int linphone_core_get_current_call_duration(const LinphoneCore *lc){
	LinphoneCall *call=linphone_core_get_current_call((LinphoneCore *)lc);
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	if (call)  return linphone_call_get_duration(call);
	return -1;
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}

const LinphoneAddress *linphone_core_get_current_call_remote_address(struct _LinphoneCore *lc){
	LinphoneCall *call=linphone_core_get_current_call(lc);
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	if (call==NULL) return NULL;
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	return linphone_call_get_remote_address(call);
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}

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void linphone_core_set_log_handler(OrtpLogFunc logfunc) {
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	ortp_set_log_handler(logfunc);
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}

void linphone_core_set_log_file(FILE *file) {
	if (file == NULL) file = stdout;
	ortp_set_log_file(file);
}

void linphone_core_set_log_level(OrtpLogLevel loglevel) {
	ortp_set_log_level_mask(loglevel);
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	if (loglevel == 0) {
		sal_disable_logs();
	} else {
		sal_enable_logs();
	}
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}

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#define LOGFILE_MAXSIZE (10 * 1024 * 1024)

static void linphone_core_log_collection_handler(OrtpLogLevel level, const char *fmt, va_list args) {
	const char *lname="undef";
	char *msg;
	char *log_filename1;
	char *log_filename2;
	FILE *log_file;
	struct timeval tp;
    struct tm *lt;
	time_t tt;
	struct stat statbuf;

	if (liblinphone_log_func != NULL) {
		liblinphone_log_func(level, fmt, args);
	}

	ortp_gettimeofday(&tp, NULL);
	tt = (time_t)tp.tv_sec;
	lt = localtime((const time_t*)&tt);
	switch(level){
		case ORTP_DEBUG:
			lname = "DEBUG";
			break;
		case ORTP_MESSAGE:
			lname = "MESSAGE";
			break;
		case ORTP_WARNING:
			lname = "WARNING";
			break;
		case ORTP_ERROR:
			lname = "ERROR";
			break;
		case ORTP_FATAL:
			lname = "FATAL";
			break;
		default:
			ortp_fatal("Bad level !");
	}
	msg = ortp_strdup_vprintf(fmt, args);

	log_filename1 = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, "linphone1.log");
	log_filename2 = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, "linphone2.log");
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	ortp_mutex_lock(&liblinphone_log_collection_mutex);
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	log_file = fopen(log_filename1, "a");
	fstat(fileno(log_file), &statbuf);
	if (statbuf.st_size > LOGFILE_MAXSIZE) {
		fclose(log_file);
		log_file = fopen(log_filename2, "a");
		fstat(fileno(log_file), &statbuf);
		if (statbuf.st_size > LOGFILE_MAXSIZE) {
			fclose(log_file);
			unlink(log_filename1);
			rename(log_filename2, log_filename1);
			log_file = fopen(log_filename2, "a");
		}
	}
	fprintf(log_file,"%i-%.2i-%.2i %.2i:%.2i:%.2i:%.3i %s %s\n",
		1900 + lt->tm_year, lt->tm_mon + 1, lt->tm_mday, lt->tm_hour, lt->tm_min, lt->tm_sec, (int)(tp.tv_usec / 1000), lname, msg);
	fflush(log_file);
	fclose(log_file);
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	ortp_mutex_unlock(&liblinphone_log_collection_mutex);
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	ortp_free(log_filename1);
	ortp_free(log_filename2);
	ortp_free(msg);
}

void linphone_core_set_log_collection_path(const char *path) {
	liblinphone_log_collection_path = path;
}

const char *linphone_core_get_log_collection_upload_server_url(LinphoneCore *core) {
	return lp_config_get_string(core->config, "misc", "log_collection_upload_server_url", NULL);
}

void linphone_core_set_log_collection_upload_server_url(LinphoneCore *core, const char *server_url) {
	lp_config_set_string(core->config, "misc", "log_collection_upload_server_url", server_url);
}

void linphone_core_enable_log_collection(bool_t enable) {
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	if ((enable == TRUE) && (liblinphone_log_collection_enabled == FALSE)) {
		liblinphone_log_collection_enabled = TRUE;
		ortp_mutex_init(&liblinphone_log_collection_mutex, NULL);
		liblinphone_log_func = ortp_logv_out;
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		ortp_set_log_handler(linphone_core_log_collection_handler);
	} else {
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		liblinphone_log_collection_enabled = FALSE;
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		ortp_set_log_handler(liblinphone_log_func);
	}
}

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static void delete_log_collection_upload_file(void) {
#ifdef HAVE_ZLIB
	char *filename = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, "linphone_log.gz");
#else
	char *filename = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, "linphone_log.gz");
#endif
	unlink(filename);
}

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static void process_io_error_upload_log_collection(void *data, const belle_sip_io_error_event_t *event) {
	LinphoneCore *core = (LinphoneCore *)data;
	ms_error("I/O Error during log collection upload to %s", linphone_core_get_log_collection_upload_server_url(core));
	linphone_core_notify_log_collection_upload_state_changed(core, LinphoneCoreLogCollectionUploadStateNotDelivered, "I/O Error");
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	delete_log_collection_upload_file();
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}

static void process_auth_requested_upload_log_collection(void *data, belle_sip_auth_event_t *event) {
	LinphoneCore *core = (LinphoneCore *)data;
	ms_error("Error during log collection upload: auth requested to connect %s", linphone_core_get_log_collection_upload_server_url(core));
	linphone_core_notify_log_collection_upload_state_changed(core, LinphoneCoreLogCollectionUploadStateNotDelivered, "Auth requested");
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	delete_log_collection_upload_file();
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}

/**
 * Callback called when posting a log collection file to server (following rcs5.1 recommendation)
 *
 * @param[in] bh The body handler
 * @param[in] msg The belle sip message
 * @param[in] data The user data associated with the handler, contains the LinphoneCore object
 * @param[in] offset The current position in the input buffer
 * @param[in] buffer The ouput buffer where to copy the data to be uploaded
 * @param[in,out] size The size in byte of the data requested, as output it will contain the effective copied size
 *
 */
static int log_collection_upload_on_send_body(belle_sip_user_body_handler_t *bh, belle_sip_message_t *msg, void *data, size_t offset, uint8_t *buffer, size_t *size) {
	LinphoneCore *core = (LinphoneCore *)data;

	/* If we've not reach the end of file yet, fill the buffer with more data */
	if (offset < core->log_collection_upload_information->size) {
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#ifdef HAVE_ZLIB
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		char *log_filename = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, "linphone_log.gz");
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		FILE *log_file = fopen(log_filename, "rb");
#else
		char *log_filename = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, "linphone_log.txt");
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		FILE *log_file = fopen(log_filename, "r");
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#endif
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		fseek(log_file, offset, SEEK_SET);
		*size = fread(buffer, 1, *size, log_file);
		fclose(log_file);
		ortp_free(log_filename);
	}

	return BELLE_SIP_CONTINUE;
}

/**
 * Callback called during upload of a log collection to server.
 * It is just forwarding the call and some parameters to the vtable defined callback.
 */
static void log_collection_upload_on_progress(belle_sip_body_handler_t *bh, belle_sip_message_t *msg, void *data, size_t offset, size_t total) {
	LinphoneCore *core = (LinphoneCore *)data;
	linphone_core_notify_log_collection_upload_progress_indication(core, (size_t)(((double)offset / (double)total) * 100.0));
}

/**
 * Callback function called when we have a response from server during the upload of the log collection to the server (rcs5.1 recommandation)
 * Note: The first post is empty and the server shall reply a 204 (No content) message, this will trigger a new post request to the server
 * to upload the file. The server response to this second post is processed by this same function
 *
 * @param[in] data The user-defined pointer associated with the request, it contains the LinphoneCore object
 * @param[in] event The response from server
 */
static void process_response_from_post_file_log_collection(void *data, const belle_http_response_event_t *event) {
	LinphoneCore *core = (LinphoneCore *)data;

	/* Check the answer code */
	if (event->response) {
		int code = belle_http_response_get_status_code(event->response);
		if (code == 204) { /* This is the reply to the first post to the server - an empty file */
			/* Start uploading the file */
			belle_http_request_listener_callbacks_t cbs = { 0 };
			belle_http_request_listener_t *l;
			belle_generic_uri_t *uri;
			belle_http_request_t *req;
			belle_sip_multipart_body_handler_t *bh;
			char* ua;
			char *first_part_header;
			belle_sip_user_body_handler_t *first_part_bh;

			linphone_core_notify_log_collection_upload_state_changed(core, LinphoneCoreLogCollectionUploadStateInProgress, NULL);

			/* Temporary storage for the Content-disposition header value */
			first_part_header = belle_sip_strdup_printf("form-data; name=\"File\"; filename=\"%s\"", core->log_collection_upload_information->name);

			/* Create a user body handler to take care of the file and add the content disposition and content-type headers */
			first_part_bh = belle_sip_user_body_handler_new(core->log_collection_upload_information->size, NULL, NULL, log_collection_upload_on_send_body, core);
			belle_sip_body_handler_add_header((belle_sip_body_handler_t *)first_part_bh, belle_sip_header_create("Content-disposition", first_part_header));
			belle_sip_free(first_part_header);
			belle_sip_body_handler_add_header((belle_sip_body_handler_t *)first_part_bh, (belle_sip_header_t *)belle_sip_header_content_type_create(core->log_collection_upload_information->type, core->log_collection_upload_information->subtype));

			/* Insert it in a multipart body handler which will manage the boundaries of multipart message */
			bh = belle_sip_multipart_body_handler_new(log_collection_upload_on_progress, core, (belle_sip_body_handler_t *)first_part_bh);
			ua = ms_strdup_printf("%s/%s", linphone_core_get_user_agent_name(), linphone_core_get_user_agent_version());
			uri = belle_generic_uri_parse(linphone_core_get_log_collection_upload_server_url(core));
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			req = belle_http_request_create("POST", uri, belle_sip_header_create("User-Agent", ua), NULL);
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			ms_free(ua);
			belle_sip_message_set_body_handler(BELLE_SIP_MESSAGE(req), BELLE_SIP_BODY_HANDLER(bh));
			cbs.process_response = process_response_from_post_file_log_collection;
			cbs.process_io_error = process_io_error_upload_log_collection;
			cbs.process_auth_requested = process_auth_requested_upload_log_collection;
			l = belle_http_request_listener_create_from_callbacks(&cbs, core);
			belle_http_provider_send_request(core->http_provider, req, l);
		}
		if (code == 200) { /* The file has been uploaded correctly, get the server reply */
			xmlDocPtr xmlMessageBody;
			xmlNodePtr cur;
			xmlChar *file_url = NULL;
			const char *body = belle_sip_message_get_body((belle_sip_message_t *)event->response);
			xmlMessageBody = xmlParseDoc((const xmlChar *)body);
			cur = xmlDocGetRootElement(xmlMessageBody);
			if (cur != NULL) {
				cur = cur->xmlChildrenNode;
				while (cur != NULL) {
					if (!xmlStrcmp(cur->name, (const xmlChar *)"file-info")) { /* we found a file info node, check it has a type="file" attribute */
						xmlChar *typeAttribute = xmlGetProp(cur, (const xmlChar *)"type");
						if (!xmlStrcmp(typeAttribute, (const xmlChar *)"file")) { /* this is the node we are looking for */
							cur = cur->xmlChildrenNode; /* now loop on the content of the file-info node */
							while (cur != NULL) {
								if (!xmlStrcmp(cur->name, (const xmlChar *)"data")) {
									file_url = 	xmlGetProp(cur, (const xmlChar *)"url");
								}
								cur=cur->next;
							}
							xmlFree(typeAttribute);
							break;
						}
						xmlFree(typeAttribute);
					}
					cur = cur->next;
				}
			}
			if (file_url != NULL) {
				linphone_core_notify_log_collection_upload_state_changed(core, LinphoneCoreLogCollectionUploadStateDelivered, (const char *)file_url);
			}
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			delete_log_collection_upload_file();
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		}
	}
}

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#ifdef HAVE_ZLIB
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#define COMPRESS_FILE_PTR gzFile
#define COMPRESS_OPEN gzopen
#define COMPRESS_CLOSE gzclose
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#else
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#define COMPRESS_FILE_PTR FILE*
#define COMPRESS_OPEN fopen
#define COMPRESS_CLOSE fclose
#endif
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/**
 * If zlib is not available the two log files are simply concatenated.
 */
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static int compress_file(FILE *input_file, COMPRESS_FILE_PTR output_file) {
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	char buffer[131072]; /* 128kB */
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	int bytes;
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	while ((bytes = fread(buffer, 1, sizeof(buffer), input_file)) > 0) {
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		if (bytes < 0) return bytes;
#ifdef HAVE_ZLIB
		bytes = gzwrite(output_file, buffer, bytes);
#else
		bytes = fwrite(buffer, 1, bytes, output_file);
#endif
		if (bytes < 0) return bytes;
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	}
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	return 0;
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}

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static int prepare_log_collection_file_to_upload(const char *filename) {
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	char *input_filename = NULL;
	char *output_filename = NULL;
	FILE *input_file = NULL;
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	COMPRESS_FILE_PTR output_file = NULL;
	int ret = 0;
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	ortp_mutex_lock(&liblinphone_log_collection_mutex);
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	output_filename = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, filename);
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	output_file = COMPRESS_OPEN(output_filename, "a");
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	if (output_file == NULL) goto error;
	input_filename = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, "linphone1.log");
	input_file = fopen(input_filename, "r");
	if (input_file == NULL) goto error;
	ret = compress_file(input_file, output_file);
	if (ret < 0) goto error;
	fclose(input_file);
	ortp_free(input_filename);
	input_filename = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, "linphone2.log");
	input_file = fopen(input_filename, "r");
	if (input_file != NULL) {
		ret = compress_file(input_file, output_file);
		if (ret < 0) goto error;
	}
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error:
	if (input_file != NULL) fclose(input_file);
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	if (output_file != NULL) COMPRESS_CLOSE(output_file);
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	if (input_filename != NULL) ortp_free(input_filename);
	if (output_filename != NULL) ortp_free(output_filename);
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	ortp_mutex_unlock(&liblinphone_log_collection_mutex);
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	return ret;
}

static size_t get_size_of_file_to_upload(const char *filename) {
	struct stat statbuf;
	char *output_filename = ortp_strdup_printf("%s/%s", liblinphone_log_collection_path, filename);
	FILE *output_file = fopen(output_filename, "rb");
	fstat(fileno(output_file), &statbuf);
	fclose(output_file);
	return statbuf.st_size;
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}

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void linphone_core_upload_log_collection(LinphoneCore *core) {
	if ((core->log_collection_upload_information == NULL) && (linphone_core_get_log_collection_upload_server_url(core) != NULL) && (liblinphone_log_collection_enabled == TRUE)) {
		/* open a transaction with the server and send an empty request(RCS5.1 section 3.5.4.8.3.1) */
		belle_http_request_listener_callbacks_t cbs = { 0 };
		belle_http_request_listener_t *l;
		belle_generic_uri_t *uri;
		belle_http_request_t *req;

		core->log_collection_upload_information = (LinphoneContent *)malloc(sizeof(LinphoneContent));
		memset(core->log_collection_upload_information, 0, sizeof(LinphoneContent));
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#ifdef HAVE_ZLIB
		core->log_collection_upload_information->type = "application";
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		core->log_collection_upload_information->subtype = "gzip";
		core->log_collection_upload_information->name = "linphone_log.gz";
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#else
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		core->log_collection_upload_information->type = "text";
		core->log_collection_upload_information->subtype = "plain";
		core->log_collection_upload_information->name = "linphone_log.txt";
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#endif
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		if (prepare_log_collection_file_to_upload(core->log_collection_upload_information->name) < 0) return;
		core->log_collection_upload_information->size = get_size_of_file_to_upload(core->log_collection_upload_information->name);
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		uri = belle_generic_uri_parse(linphone_core_get_log_collection_upload_server_url(core));
		req = belle_http_request_create("POST", uri, NULL, NULL, NULL);
		cbs.process_response = process_response_from_post_file_log_collection;
		cbs.process_io_error = process_io_error_upload_log_collection;
		cbs.process_auth_requested = process_auth_requested_upload_log_collection;
		l = belle_http_request_listener_create_from_callbacks(&cbs, core);
		belle_http_provider_send_request(core->http_provider, req, l);
	}
}

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/**
 * Enable logs in supplied FILE*.
 *
 * @ingroup misc
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 * @deprecated Use #linphone_core_set_log_file and #linphone_core_set_log_level instead.
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 *
 * @param file a C FILE* where to fprintf logs. If null stdout is used.
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 *
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**/
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void linphone_core_enable_logs(FILE *file){
	if (file==NULL) file=stdout;
	ortp_set_log_file(file);
	ortp_set_log_level_mask(ORTP_MESSAGE|ORTP_WARNING|ORTP_ERROR|ORTP_FATAL);
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	sal_enable_logs();
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}

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/**
 * Enable logs through the user's supplied log callback.
 *
 * @ingroup misc
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 * @deprecated Use #linphone_core_set_log_handler and #linphone_core_set_log_level instead.
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 *
 * @param logfunc The address of a OrtpLogFunc callback whose protoype is
 *            	  typedef void (*OrtpLogFunc)(OrtpLogLevel lev, const char *fmt, va_list args);
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 *
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**/
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void linphone_core_enable_logs_with_cb(OrtpLogFunc logfunc){
	ortp_set_log_level_mask(ORTP_MESSAGE|ORTP_WARNING|ORTP_ERROR|ORTP_FATAL);
	ortp_set_log_handler(logfunc);
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	sal_enable_logs();
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}

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/**
 * Entirely disable logging.
 *
 * @ingroup misc
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 * @deprecated Use #linphone_core_set_log_level instead.
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**/
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void linphone_core_disable_logs(void){
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	ortp_set_log_level_mask(ORTP_ERROR|ORTP_FATAL);
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	sal_disable_logs();
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}

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void linphone_core_serialize_logs(void) {
	liblinphone_serialize_logs = TRUE;
}

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static void net_config_read (LinphoneCore *lc)
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{
	int tmp;
	const char *tmpstr;
	LpConfig *config=lc->config;

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	lc->net_conf.nat_address_ip = NULL;
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	tmp=lp_config_get_int(config,"net","download_bw",0);
	linphone_core_set_download_bandwidth(lc,tmp);
	tmp=lp_config_get_int(config,"net","upload_bw",0);
	linphone_core_set_upload_bandwidth(lc,tmp);
	linphone_core_set_stun_server(lc,lp_config_get_string(config,"net","stun_server",NULL));
	tmpstr=lp_config_get_string(lc->config,"net","nat_address",NULL);
	if (tmpstr!=NULL && (strlen(tmpstr)<1)) tmpstr=NULL;
	linphone_core_set_nat_address(lc,tmpstr);
	tmp=lp_config_get_int(lc->config,"net","nat_sdp_only",0);
	lc->net_conf.nat_sdp_only=tmp;
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	tmp=lp_config_get_int(lc->config,"net","mtu",1300);
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	linphone_core_set_mtu(lc,tmp);
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	tmp=lp_config_get_int(lc->config,"net","download_ptime",-1);
	if (tmp !=-1 && linphone_core_get_download_ptime(lc) !=0) {
		/*legacy parameter*/
		linphone_core_set_download_ptime(lc,tmp);
	}
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	tmp = lp_config_get_int(lc->config, "net", "dns_srv_enabled", 1);
	linphone_core_enable_dns_srv(lc, tmp);
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	/* This is to filter out unsupported firewall policies */
	linphone_core_set_firewall_policy(lc, linphone_core_get_firewall_policy(lc));
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}

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static void build_sound_devices_table(LinphoneCore *lc){
	const char **devices;
	const char **old;
	int ndev;
	int i;
	const MSList *elem=ms_snd_card_manager_get_list(ms_snd_card_manager_get());
	ndev=ms_list_size(elem);
	devices=ms_malloc((ndev+1)*sizeof(const char *));
	for (i=0;elem!=NULL;elem=elem->next,i++){
		devices[i]=ms_snd_card_get_string_id((MSSndCard *)elem->data);
	}
	devices[ndev]=NULL;
	old=lc->sound_conf.cards;
	lc->sound_conf.cards=devices;
	if (old!=NULL) ms_free(old);
}
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static void sound_config_read(LinphoneCore *lc)
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{
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	int tmp;
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	const char *tmpbuf;
	const char *devid;
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#ifdef __linux
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	/*alsadev let the user use custom alsa device within linphone*/
	devid=lp_config_get_string(lc->config,"sound","alsadev",NULL);
	if (devid){
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		MSSndCard* card;
		const char* delim=",";
		size_t l=strlen(devid);
		char* d=malloc(l+1);
		char* i;
		memcpy(d,devid,l+1);
		for (l=0,i=strpbrk(d+l,delim);i;i=strpbrk(d+l,delim)){
			char s=*i;
			*i='\0';
			card=ms_alsa_card_new_custom(d+l,d+l);
			ms_snd_card_manager_add_card(ms_snd_card_manager_get(),card);
			*i=s;
			l=i-d+1;
		}
		if(d[l]!='\0') {
			card=ms_alsa_card_new_custom(d+l,d+l);
			ms_snd_card_manager_add_card(ms_snd_card_manager_get(),card);
		}
		free(d);
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	}
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	tmp=lp_config_get_int(lc->config,"sound","alsa_forced_rate",-1);
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	if (tmp>0) ms_alsa_card_set_forced_sample_rate(tmp);
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#endif
	/* retrieve all sound devices */
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	build_sound_devices_table(lc);

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	devid=lp_config_get_string(lc->config,"sound","playback_dev_id",NULL);
	linphone_core_set_playback_device(lc,devid);
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	devid=lp_config_get_string(lc->config,"sound","ringer_dev_id",NULL);
	linphone_core_set_ringer_device(lc,devid);
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	devid=lp_config_get_string(lc->config,"sound","capture_dev_id",NULL);
	linphone_core_set_capture_device(lc,devid);
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/*
	tmp=lp_config_get_int(lc->config,"sound","play_lev",80);
	linphone_core_set_play_level(lc,tmp);
	tmp=lp_config_get_int(lc->config,"sound","ring_lev",80);
	linphone_core_set_ring_level(lc,tmp);
	tmp=lp_config_get_int(lc->config,"sound","rec_lev",80);
	linphone_core_set_rec_level(lc,tmp);
	tmpbuf=lp_config_get_string(lc->config,"sound","source","m");
	linphone_core_set_sound_source(lc,tmpbuf[0]);
*/
658

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	tmpbuf=PACKAGE_SOUND_DIR "/" LOCAL_RING;
	tmpbuf=lp_config_get_string(lc->config,"sound","local_ring",tmpbuf);
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	if (ortp_file_exist(tmpbuf)==-1) {
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		ms_warning("%s does not exist",tmpbuf);
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		tmpbuf=PACKAGE_SOUND_DIR "/" LOCAL_RING;
	}
	if (strstr(tmpbuf,".wav")==NULL){
		/* it currently uses old sound files, so replace them */
		tmpbuf=PACKAGE_SOUND_DIR "/" LOCAL_RING;
	}
	linphone_core_set_ring(lc,tmpbuf);
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	tmpbuf=PACKAGE_SOUND_DIR "/" REMOTE_RING;
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	tmpbuf=lp_config_get_string(lc->config,"sound","remote_ring",tmpbuf);
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	if (ortp_file_exist(tmpbuf)==-1){
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		tmpbuf=PACKAGE_SOUND_DIR "/" REMOTE_RING;
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	}
	if (strstr(tmpbuf,".wav")==NULL){
		/* it currently uses old sound files, so replace them */
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		tmpbuf=PACKAGE_SOUND_DIR "/" REMOTE_RING;
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	}
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	linphone_core_set_ringback(lc,tmpbuf);
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	linphone_core_set_play_file(lc,lp_config_get_string(lc->config,"sound","hold_music",PACKAGE_SOUND_DIR "/" HOLD_MUSIC));
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	lc->sound_conf.latency=0;
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#ifndef __ios
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	tmp=TRUE;
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#else
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	tmp=FALSE; /* on iOS we have builtin echo cancellation.*/
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#endif
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	tmp=lp_config_get_int(lc->config,"sound","echocancellation",tmp);
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	linphone_core_enable_echo_cancellation(lc,tmp);
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	linphone_core_enable_echo_limiter(lc,
		lp_config_get_int(lc->config,"sound","echolimiter",0));
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	linphone_core_enable_agc(lc,
		lp_config_get_int(lc->config,"sound","agc",0));
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	linphone_core_set_playback_gain_db (lc,lp_config_get_float(lc->config,"sound","playback_gain_db",0));
	linphone_core_set_mic_gain_db (lc,lp_config_get_float(lc->config,"sound","mic_gain_db",0));
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	linphone_core_set_remote_ringback_tone (lc,lp_config_get_string(lc->config,"sound","ringback_tone",NULL));
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	/*just parse requested stream feature once at start to print out eventual errors*/
	linphone_core_get_audio_features(lc);
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	_linphone_core_set_tone(lc,LinphoneReasonBusy,LinphoneToneBusy,NULL);
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}

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static void certificates_config_read(LinphoneCore *lc)
{
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	const char *rootca;
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#ifdef __linux
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	rootca=lp_config_get_string(lc->config,"sip","root_ca", "/etc/ssl/certs");
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#else
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	rootca=lp_config_get_string(lc->config,"sip","root_ca", ROOT_CA_FILE);
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#endif
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	linphone_core_set_root_ca(lc,rootca);
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	linphone_core_verify_server_certificates(lc,lp_config_get_int(lc->config,"sip","verify_server_certs",TRUE));
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	linphone_core_verify_server_cn(lc,lp_config_get_int(lc->config,"sip","verify_server_cn",TRUE));
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}

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static void sip_config_read(LinphoneCore *lc)
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{
	char *contact;
	const char *tmpstr;
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	LCSipTransports tr;
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	int i,tmp;
	int ipv6;
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	if (lp_config_get_int(lc->config,"sip","use_session_timers",0)==1){
		sal_use_session_timers(lc->sal,200);
	}
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	sal_use_no_initial_route(lc->sal,lp_config_get_int(lc->config,"sip","use_no_initial_route",0));
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	sal_use_rport(lc->sal,lp_config_get_int(lc->config,"sip","use_rport",1));

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	ipv6=lp_config_get_int(lc->config,"sip","use_ipv6",-1);
	if (ipv6==-1){
		ipv6=0;
	}
	linphone_core_enable_ipv6(lc,ipv6);
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	memset(&tr,0,sizeof(tr));
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	tr.udp_port=lp_config_get_int(lc->config,"sip","sip_port",5060);
	tr.tcp_port=lp_config_get_int(lc->config,"sip","sip_tcp_port",5060);
	/*we are not listening inbound connection for tls, port has no meaning*/
	tr.tls_port=lp_config_get_int(lc->config,"sip","sip_tls_port",LC_SIP_TRANSPORT_RANDOM);
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	certificates_config_read(lc);
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	/*setting the dscp must be done before starting the transports, otherwise it is not taken into effect*/
	sal_set_dscp(lc->sal,linphone_core_get_sip_dscp(lc));
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	/*start listening on ports*/
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	linphone_core_set_sip_transports(lc,&tr);
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	tmpstr=lp_config_get_string(lc->config,"sip","contact",NULL);
	if (tmpstr==NULL || linphone_core_set_primary_contact(lc,tmpstr)==-1) {
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		const char *hostname=NULL;
		const char *username=NULL;
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#ifdef HAVE_GETENV
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		hostname=getenv("HOST");
		username=getenv("USER");
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		if (hostname==NULL) hostname=getenv("HOSTNAME");
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#endif /*HAVE_GETENV*/
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		if (hostname==NULL)
			hostname="unknown-host";
		if (username==NULL){
			username="toto";
		}
		contact=ortp_strdup_printf("sip:%s@%s",username,hostname);
		linphone_core_set_primary_contact(lc,contact);
		ms_free(contact);
	}

	tmp=lp_config_get_int(lc->config,"sip","guess_hostname",1);
	linphone_core_set_guess_hostname(lc,tmp);
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	tmp=lp_config_get_int(lc->config,"sip","inc_timeout",30);
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	linphone_core_set_inc_timeout(lc,tmp);

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	tmp=lp_config_get_int(lc->config,"sip","in_call_timeout",0);
	linphone_core_set_in_call_timeout(lc,tmp);
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	tmp=lp_config_get_int(lc->config,"sip","delayed_timeout",4);
	linphone_core_set_delayed_timeout(lc,tmp);
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	/* get proxies config */
	for(i=0;; i++){
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		LinphoneProxyConfig *cfg=linphone_proxy_config_new_from_config_file(lc,i);
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		if (cfg!=NULL){
			linphone_core_add_proxy_config(lc,cfg);
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			linphone_proxy_config_unref(cfg);
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		}else{
			break;
		}
	}
	/* get the default proxy */
	tmp=lp_config_get_int(lc->config,"sip","default_proxy",-1);
	linphone_core_set_default_proxy_index(lc,tmp);
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	/* read authentication information */
	for(i=0;; i++){
		LinphoneAuthInfo *ai=linphone_auth_info_new_from_config_file(lc->config,i);
		if (ai!=NULL){
			linphone_core_add_auth_info(lc,ai);
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			linphone_auth_info_destroy(ai);
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		}else{
			break;
		}
	}
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	/*this is to filter out unsupported encryption schemes*/
	linphone_core_set_media_encryption(lc,linphone_core_get_media_encryption(lc));
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	/*for tuning or test*/
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	lc->sip_conf.sdp_200_ack=lp_config_get_int(lc->config,"sip","sdp_200_ack",0);
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	lc->sip_conf.register_only_when_network_is_up=
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		lp_config_get_int(lc->config,"sip","register_only_when_network_is_up",1);
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	lc->sip_conf.register_only_when_upnp_is_ok=
		lp_config_get_int(lc->config,"sip","register_only_when_upnp_is_ok",1);
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	lc->sip_conf.ping_with_options=lp_config_get_int(lc->config,"sip","ping_with_options",0);
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	lc->sip_conf.auto_net_state_mon=lp_config_get_int(lc->config,"sip","auto_net_state_mon",1);
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	lc->sip_conf.keepalive_period=lp_config_get_int(lc->config,"sip","keepalive_period",10000);
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	lc->sip_conf.tcp_tls_keepalive=lp_config_get_int(lc->config,"sip","tcp_tls_keepalive",0);
	linphone_core_enable_keep_alive(lc, (lc->sip_conf.keepalive_period > 0));
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	sal_use_one_matching_codec_policy(lc->sal,lp_config_get_int(lc->config,"sip","only_one_codec",0));
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	sal_use_dates(lc->sal,lp_config_get_int(lc->config,"sip","put_date",0));
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	sal_enable_sip_update_method(lc->sal,lp_config_get_int(lc->config,"sip","sip_update",1));
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	lc->sip_conf.vfu_with_info=lp_config_get_int(lc->config,"sip","vfu_with_info",1);
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	linphone_core_set_sip_transport_timeout(lc, lp_config_get_int(lc->config, "sip", "transport_timeout", 63000));
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	sal_set_supported_tags(lc->sal,lp_config_get_string(lc->config,"sip","supported","replaces, outbound"));
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}

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static void rtp_config_read(LinphoneCore *lc)
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{
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	int min_port, max_port;
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	int jitt_comp;
	int nortp_timeout;
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	bool_t rtp_no_xmit_on_audio_mute;
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	bool_t adaptive_jitt_comp_enabled;
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	if (lp_config_get_range(lc->config, "rtp", "audio_rtp_port", &min_port, &max_port, 7078, 7078) == TRUE) {
		if (min_port <= 0) min_port = 1;
		if (max_port > 65535) max_port = 65535;
		linphone_core_set_audio_port_range(lc, min_port, max_port);
	} else {
		min_port = lp_config_get_int(lc->config, "rtp", "audio_rtp_port", 7078);
		linphone_core_set_audio_port(lc, min_port);
	}
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	if (lp_config_get_range(lc->config, "rtp", "video_rtp_port", &min_port, &max_port, 9078, 9078) == TRUE) {
		if (min_port <= 0) min_port = 1;
		if (max_port > 65535) max_port = 65535;
		linphone_core_set_video_port_range(lc, min_port, max_port);
	} else {
		min_port = lp_config_get_int(lc->config, "rtp", "video_rtp_port", 9078);
		linphone_core_set_video_port(lc, min_port);
	}
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	jitt_comp=lp_config_get_int(lc->config,"rtp","audio_jitt_comp",60);
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	linphone_core_set_audio_jittcomp(lc,jitt_comp);
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	jitt_comp=lp_config_get_int(lc->config,"rtp","video_jitt_comp",60);
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	if (jitt_comp==0) jitt_comp=60;
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	linphone_core_set_video_jittcomp(lc,jitt_comp);
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	nortp_timeout=lp_config_get_int(lc->config,"rtp","nortp_timeout",30);
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	linphone_core_set_nortp_timeout(lc,nortp_timeout);
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	rtp_no_xmit_on_audio_mute=lp_config_get_int(lc->config,"rtp","rtp_no_xmit_on_audio_mute",FALSE);
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	linphone_core_set_rtp_no_xmit_on_audio_mute(lc,rtp_no_xmit_on_audio_mute);
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	adaptive_jitt_comp_enabled = lp_config_get_int(lc->config, "rtp", "audio_adaptive_jitt_comp_enabled", TRUE);
	linphone_core_enable_audio_adaptive_jittcomp(lc, adaptive_jitt_comp_enabled);
	adaptive_jitt_comp_enabled = lp_config_get_int(lc->config, "rtp", "video_adaptive_jitt_comp_enabled", TRUE);
	linphone_core_enable_video_adaptive_jittcomp(lc, adaptive_jitt_comp_enabled);
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	lc->rtp_conf.disable_upnp = lp_config_get_int(lc->config, "rtp", "disable_upnp", FALSE);
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	linphone_core_set_avpf_mode(lc,lp_config_get_int(lc->config,"rtp","avpf",0));
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}

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static PayloadType * find_payload(RtpProfile *prof, const char *mime_type, int clock_rate, int channels, const char *recv_fmtp){
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	PayloadType *candidate=NULL;
	int i;
	PayloadType *it;
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	for(i=0;i<RTP_PROFILE_MAX_PAYLOADS;++i){
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		it=rtp_profile_get_payload(prof,i);
		if (it!=NULL && strcasecmp(mime_type,it->mime_type)==0
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			&& (clock_rate==it->clock_rate || clock_rate<=0)
			&& (channels==it->channels || channels<=0) ){
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			if ( (recv_fmtp && it->recv_fmtp && strstr(recv_fmtp,it->recv_fmtp)!=NULL) ||
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				(recv_fmtp==NULL && it->recv_fmtp==NULL) ){
				/*exact match*/
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				if (recv_fmtp) payload_type_set_recv_fmtp(it,recv_fmtp);
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				return it;
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			}else {
				if (candidate){
					if (it->recv_fmtp==NULL) candidate=it;
				}else candidate=it;
			}
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		}
	}
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	if (candidate && recv_fmtp){
		payload_type_set_recv_fmtp(candidate,recv_fmtp);
	}
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	return candidate;
}
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static bool_t get_codec(LinphoneCore *lc, const char* type, int index, PayloadType **ret){
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	char codeckey[50];
	const char *mime,*fmtp;
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	int rate,channels,enabled;
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	PayloadType *pt;
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	LpConfig *config=lc->config;
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	*ret=NULL;
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	snprintf(codeckey,50,"%s_%i",type,index);
	mime=lp_config_get_string(config,codeckey,"mime",NULL);
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	if (mime==NULL || strlen(mime)==0 ) return FALSE;
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	rate=lp_config_get_int(config,codeckey,"rate",8000);
	fmtp=lp_config_get_string(config,codeckey,"recv_fmtp",NULL);
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	channels=lp_config_get_int(config,codeckey,"channels",0);
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	enabled=lp_config_get_int(config,codeckey,"enabled",1);
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	pt=find_payload(lc->default_profile,mime,rate,channels,fmtp);
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	if (pt && enabled ) pt->flags|=PAYLOAD_TYPE_ENABLED;
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	//ms_message("Found codec %s/%i",pt->mime_type,pt->clock_rate);
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	if (pt==NULL) ms_warning("Ignoring codec config %s/%i with fmtp=%s because unsupported",
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				mime,rate,fmtp ? fmtp : "");
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	*ret=pt;
	return TRUE;
}

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#define RANK_END 10000
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typedef struct codec_desc{
	const char *name;
	int rate;
}codec_desc_t;

static codec_desc_t codec_pref_order[]={
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	{"opus", 48000},
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	{"SILK", 16000},
	{"speex", 16000},
	{"speex", 8000},
	{"pcmu",8000},
	{"pcma",8000},
	{"VP8",90000},
	{"H264",90000},
	{"MP4V-ES",90000},
	{NULL,0}
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};

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static int find_codec_rank(const char *mime, int clock_rate){
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	int i;
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#ifdef __arm__
	/*hack for opus, that needs to be disabed by default on ARM single processor, otherwise there is no cpu left for video processing*/
	if (strcasecmp(mime,"opus")==0){
		if (ms_get_cpu_count()==1) return RANK_END;
	}
#endif
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	for(i=0;codec_pref_order[i].name!=NULL;++i){
		if (strcasecmp(codec_pref_order[i].name,mime)==0 && clock_rate==codec_pref_order[i].rate)
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			return i;
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	}
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	return RANK_END;