228 lines
7.3 KiB
C
228 lines
7.3 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file common/config/config_load_configmodule.c
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* \brief configuration module, load the shared library implementing the configuration module
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* \author Francois TABURET
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* \date 2017
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* \version 0.1
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* \company NOKIA BellLabs France
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* \email: francois.taburet@nokia-bell-labs.com
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* \note
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* \warning
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*/
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#define _GNU_SOURCE
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <dlfcn.h>
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#define CONFIG_LOADCONFIG_MAIN
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#include "config_load_configmodule.h"
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#include "config_userapi.h"
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#define CONFIG_SHAREDLIBFORMAT "libparams_%s.so"
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int load_config_sharedlib(configmodule_interface_t *cfgptr)
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{
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void *lib_handle;
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char fname[128];
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char libname[FILENAME_MAX];
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int st;
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st=0;
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sprintf(libname,CONFIG_SHAREDLIBFORMAT,cfgptr->cfgmode);
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lib_handle = dlopen(libname,RTLD_NOW | RTLD_GLOBAL | RTLD_NODELETE);
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if (!lib_handle) {
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fprintf(stderr,"[CONFIG] %s %d Error calling dlopen(%s): %s\n",__FILE__, __LINE__, libname,dlerror());
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st = -1;
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} else {
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sprintf (fname,"config_%s_init",cfgptr->cfgmode);
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cfgptr->init = dlsym(lib_handle,fname);
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if (cfgptr->init == NULL ) {
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printf("[CONFIG] %s %d no function %s for config mode %s\n",
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__FILE__, __LINE__,fname, cfgptr->cfgmode);
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} else {
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st=cfgptr->init(cfgptr->cfgP,cfgptr->num_cfgP);
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printf("[CONFIG] function %s returned %i\n",
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fname, st);
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}
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sprintf (fname,"config_%s_get",cfgptr->cfgmode);
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cfgptr->get = dlsym(lib_handle,fname);
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if (cfgptr->get == NULL ) {
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printf("[CONFIG] %s %d no function %s for config mode %s\n",
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__FILE__, __LINE__,fname, cfgptr->cfgmode);
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st = -1;
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}
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sprintf (fname,"config_%s_getlist",cfgptr->cfgmode);
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cfgptr->getlist = dlsym(lib_handle,fname);
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if (cfgptr->getlist == NULL ) {
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printf("[CONFIG] %s %d no function %s for config mode %s\n",
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__FILE__, __LINE__,fname, cfgptr->cfgmode);
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st = -1;
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}
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sprintf (fname,"config_%s_end",cfgptr->cfgmode);
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cfgptr->end = dlsym(lib_handle,fname);
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if (cfgptr->getlist == NULL ) {
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printf("[CONFIG] %s %d no function %s for config mode %s\n",
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__FILE__, __LINE__,fname, cfgptr->cfgmode);
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}
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}
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return st;
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}
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/*-----------------------------------------------------------------------------------*/
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/* from here: interface implementtion of the configuration module */
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configmodule_interface_t *load_configmodule(int argc, char **argv)
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{
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char *cfgparam=NULL;
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char *modeparams=NULL;
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char *cfgmode=NULL;
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char *strtokctx=NULL;
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char *atoken;
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uint32_t tmpflags=0;
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int i;
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/* first parse the command line to look for the -O option */
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opterr=0;
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for (i = 0;i<argc;i++) {
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if (strlen(argv[i]) < 2) continue;
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if ( argv[i][1] == 'O' && i < (argc -1)) {
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cfgparam = argv[i+1];
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}
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if ( argv[i][1] == 'h' ) {
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tmpflags = CONFIG_HELP;
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}
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}
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optind=1;
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/* look for the OAI_CONFIGMODULE environement variable */
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if ( cfgparam == NULL ) {
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cfgparam = getenv("OAI_CONFIGMODULE");
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}
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/* default */
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if (cfgparam == NULL) {
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tmpflags = tmpflags | CONFIG_NOOOPT;
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cfgparam = DEFAULT_CFGMODE ":" DEFAULT_CFGFILENAME;
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}
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/* parse the config parameters to set the config source */
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i = sscanf(cfgparam,"%m[^':']:%ms",&cfgmode,&modeparams);
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if (i< 0) {
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fprintf(stderr,"[CONFIG] %s, %d, sscanf error parsing config source %s: %s\n", __FILE__, __LINE__,cfgparam, strerror(errno));
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cfgmode=strdup(DEFAULT_CFGMODE);
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modeparams = strdup(DEFAULT_CFGFILENAME);
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}
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else if ( i == 1 ) {
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/* -O argument doesn't contain ":" separator, assume -O <conf file> option, default cfgmode to libconfig
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with one parameter, the path to the configuration file */
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modeparams=cfgmode;
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cfgmode=strdup(DEFAULT_CFGMODE);
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}
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cfgptr = malloc(sizeof(configmodule_interface_t));
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memset(cfgptr,0,sizeof(configmodule_interface_t));
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cfgptr->rtflags = cfgptr->rtflags | tmpflags;
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cfgptr->argc = argc;
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cfgptr->argv = argv;
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cfgptr->cfgmode=strdup(cfgmode);
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cfgptr->num_cfgP=0;
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atoken=strtok_r(modeparams,":",&strtokctx);
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while ( cfgptr->num_cfgP< CONFIG_MAX_OOPT_PARAMS && atoken != NULL) {
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/* look for debug level in the config parameters, it is commom to all config mode
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and will be removed frome the parameter array passed to the shared module */
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char *aptr;
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aptr=strcasestr(atoken,"dbgl");
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if (aptr != NULL) {
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cfgptr->rtflags = cfgptr->rtflags | strtol(aptr+4,NULL,0);
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} else {
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cfgptr->cfgP[cfgptr->num_cfgP] = strdup(atoken);
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cfgptr->num_cfgP++;
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}
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atoken = strtok_r(NULL,":",&strtokctx);
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}
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printf("[CONFIG] get parameters from %s ",cfgmode);
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for (i=0;i<cfgptr->num_cfgP; i++) {
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printf("%s ",cfgptr->cfgP[i]);
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}
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printf("\n");
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i=load_config_sharedlib(cfgptr);
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if (i< 0) {
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fprintf(stderr,"[CONFIG] %s %d config module %s couldn't be loaded\n", __FILE__, __LINE__,cfgmode);
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cfgptr->rtflags = cfgptr->rtflags | CONFIG_HELP | CONFIG_ABORT;
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} else {
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printf("[CONFIG] config module %s loaded\n",cfgmode);
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Config_Params[CONFIGPARAM_DEBUGFLAGS_IDX].uptr=&(cfgptr->rtflags);
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config_get(Config_Params,CONFIG_PARAMLENGTH(Config_Params), CONFIG_SECTIONNAME );
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}
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if (modeparams != NULL) free(modeparams);
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if (cfgmode != NULL) free(cfgmode);
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if (CONFIG_ISFLAGSET(CONFIG_ABORT)) config_printhelp(Config_Params,CONFIG_PARAMLENGTH(Config_Params));
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return cfgptr;
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}
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void end_configmodule()
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{
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if (cfgptr != NULL) {
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if (cfgptr->end != NULL) {
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printf ("[CONFIG] calling config module end function...\n");
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cfgptr->end();
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}
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if( cfgptr->cfgmode != NULL) free(cfgptr->cfgmode);
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printf ("[CONFIG] free %u config parameter pointers\n",cfgptr->num_cfgP);
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for (int i=0; i<cfgptr->num_cfgP; i++) {
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if ( cfgptr->cfgP[i] != NULL) free(cfgptr->cfgP[i]);
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}
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printf ("[CONFIG] free %u config value pointers\n",cfgptr->numptrs);
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for(int i=0; i<cfgptr->numptrs ; i++) {
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if (cfgptr->ptrs[i] != NULL) {
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free(cfgptr->ptrs[i]);
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}
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cfgptr->ptrs[i]=NULL;
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}
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free(cfgptr);
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cfgptr=NULL;
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}
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}
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