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s2conf.c
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/*
* --- Revised 3-Clause BSD License ---
* Copyright Semtech Corporation 2022. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of the Semtech corporation nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL SEMTECH CORPORATION. BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include "s2conf.h"
#include "rt.h"
#include "uj.h"
#undef _s2conf_x_
#undef CONF_PARAM
#define CONF_PARAM(name,type,fn,value,info) type##_t name;
#include "s2conf.h"
static int parse_bool (struct conf_param* param);
static int parse_u4 (struct conf_param* param);
static int parse_str (struct conf_param* param);
static int parse_tspan_h (struct conf_param* param);
static int parse_tspan_m (struct conf_param* param);
static int parse_tspan_s (struct conf_param* param);
static int parse_tspan_ms (struct conf_param* param);
static int parse_size_kb (struct conf_param* param);
static int parse_size_mb (struct conf_param* param);
#undef _s2conf_x_
#undef CONF_PARAM
#define CONF_PARAM(name,type,fn,value,info) { #name, #type, info, "builtin", value, &name, parse_##fn },
struct conf_param conf_params[] = {
#include "s2conf.h"
{ NULL }
};
static int parse_bool (struct conf_param* param) {
ujdec_t D;
char* v = rt_strdup(param->value);
uj_iniDecoder(&D, v, strlen(v));
if( uj_decode(&D) ) {
LOG(ERROR, "Parsing of config param '%s' (%s) as bool failed: %s",
param->name, param->src, param->value);
free(v);
return 0;
}
*(bool*)param->pvalue = uj_bool(&D);
uj_assertEOF(&D);
rt_free(v);
return 1;
}
static int parse_u4 (struct conf_param* param) {
ujdec_t D;
char* v = rt_strdup(param->value);
uj_iniDecoder(&D, v, strlen(v));
if( uj_decode(&D) ) {
LOG(ERROR, "Parsing of config param '%s' (%s) as u4 failed: %s",
param->name, param->src, param->value);
free(v);
return 0;
}
*(u4_t*)param->pvalue = uj_uint(&D);
uj_assertEOF(&D);
rt_free(v);
return 1;
}
static int parse_str (struct conf_param* param) {
ujdec_t D;
char* v = rt_strdup(param->value);
uj_iniDecoder(&D, v, strlen(v));
if( uj_decode(&D) ) {
LOG(ERROR, "Parsing of config param '%s' (%s) as 'str' failed: %s",
param->name, param->src, param->value);
free(v);
return 0;
}
rt_free(*(void**)param->pvalue);
*(str_t*)param->pvalue = rt_strdup(uj_str(&D));
uj_assertEOF(&D);
rt_free(v);
return 1;
}
static int parse_tspan (struct conf_param* param, ustime_t defaultUnit) {
ujdec_t D;
char* v = rt_strdup(param->value);
uj_iniDecoder(&D, v, strlen(v));
if( uj_decode(&D) ) {
LOG(ERROR, "Parsing of config param '%s' (%s) as 'tspan' failed: %s",
param->name, param->src, param->value);
free(v);
return 0;
}
ustime_t tspan;
if( uj_nextValue(&D) == UJ_STRING ) {
char *s = uj_str(&D);
tspan = rt_readSpan((str_t*)&s, defaultUnit);
if( tspan < 0 || s[0] )
uj_error(&D, "Syntax error");
} else {
tspan = uj_num(&D) * defaultUnit;
}
uj_assertEOF(&D);
*(ustime_t*)param->pvalue = tspan;
rt_free(v);
return 1;
}
static int parse_tspan_h (struct conf_param* param) {
return parse_tspan(param, rt_seconds(3600));
}
static int parse_tspan_m (struct conf_param* param) {
return parse_tspan(param, rt_seconds(60));
}
static int parse_tspan_s (struct conf_param* param) {
return parse_tspan(param, rt_seconds(1));
}
static int parse_tspan_ms (struct conf_param* param) {
return parse_tspan(param, rt_millis(1));
}
static int parse_size (struct conf_param* param, u4_t defaultUnit) {
ujdec_t D;
char* v = rt_strdup(param->value);
uj_iniDecoder(&D, v, strlen(v));
if( uj_decode(&D) ) {
LOG(ERROR, "Parsing of config param '%s' (%s) as 'size' failed: %s",
param->name, param->src, param->value);
free(v);
return 0;
}
sL_t size;
if( uj_nextValue(&D) == UJ_STRING ) {
char *s = uj_str(&D);
size = rt_readSize((str_t*)&s, defaultUnit);
if( size < 0 || s[0] )
uj_error(&D, "Syntax error");
} else {
size = uj_num(&D) * defaultUnit;
}
uj_assertEOF(&D);
*(u4_t*)param->pvalue = size;
rt_free(v);
return 1;
}
static int parse_size_kb (struct conf_param* param) {
return parse_size(param, 1024);
}
static int parse_size_mb (struct conf_param* param) {
return parse_size(param, 1024*1024);
}
void s2conf_ini () {
for( struct conf_param* p = conf_params; p->name; p++ ) {
s2conf_set("builtin", p->name, p->value);
str_t v = getenv(p->name);
if( v ) {
if (strcmp(p->type,"str")==0)
s2conf_set("env", p->name, rt_strdupq(v));
else
s2conf_set("env", p->name, rt_strdup(v));
}
}
}
void* s2conf_get (str_t name) {
for( struct conf_param* p = conf_params; p->name; p++ ) {
if( strcmp(p->name, name) == 0 )
return p;
}
return NULL;
}
int s2conf_set (str_t src, str_t name, str_t value) {
struct conf_param* p = s2conf_get(name);
if( p == NULL ) {
assert(strcmp(src,"builtin") != 0); // initialization values must be ok
free((void*)value);
return -1; // No such param name
}
struct conf_param n = *p;
n.src = src;
n.value = value;
if( !n.parseFn(&n) ) {
assert(p->value != value); // initialization values must be ok
free((void*)value);
return 0; // parsing failed
}
if( strcmp(p->src, "builtin") != 0 )
free((void*)p->value);
*p = n;
return 1;
}
void s2conf_printAll () {
for( struct conf_param* p = conf_params; p->name; p++ ) {
fprintf(stderr, "%6s %-20s = %-10s %-12s %s\n",
p->type, p->name, p->value, p->src, p->info);
}
}