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/*
* src/zonefile.c
* (c) 2021 Jonas Gunz <himself@jonasgunz.de>
* License: MIT
*/
#include "zonefile.h"
int zonefile_string_split(char* _parts[], ssize_t _max, char* _str, char _delim) {
unsigned int i, o, start;
start = 0;
for ( i=0; i < _max; i++ ) {
for ( o=start; _str[o] && _str[o] != ' '; o++ );
_parts[i] = &_str[start];
if(!_str[o])
break;
_str[o] = '\0';
start = o+1;
}
return (int)i + 1;
}
int zonefile_parse_line(database_t *_database, char *_line) {
char *parts[5];
int parts_len, ret, fqdn_len;
char* qname;
uint32_t ttl;
uint16_t type, class;
void* data;
memset(&parts, 0, sizeof(parts));
parts_len = zonefile_string_split(parts, 5, _line, ' ');
if (parts_len != 5) {
LOGPRINTF(_LOG_ERROR, "Statement is incomplete");
return -1;
}
fqdn_len = strlen(parts[0]);
if ( (ret = fqdn_check(parts[0], fqdn_len)) ) {
LOGPRINTF(_LOG_ERROR, "FQDN Contains invalid char at pos %i", ret);
return -1;
}
qname = malloc( (unsigned)fqdn_len+1 );
if ( fqdn_to_qname(parts[0], fqdn_len, qname, fqdn_len+1) < 0) {
LOGPRINTF(_LOG_ERROR, "Failed to convert to QNAME. This is a bug.");
return -1;
}
if ( !(ttl = (uint16_t) atoi(parts[1])) ) {
LOGPRINTF(_LOG_ERROR, "Invalid TTL");
return -1;
}
DEBUG("value %s", parts[4]);
return 0;
return -1;
}
int zonefile_to_database (database_t *_database, char* _file) {
FILE *zfile = NULL;
char *line = NULL;
size_t llen = 0;
ssize_t line_len = 0;
unsigned int line_cnt = 0;
zfile = fopen(_file, "r");
if (!zfile) {
LOGPRINTF(_LOG_ERRNO, "Could not open %s", _file);
return -1;
}
DEBUG("Parsing zonefile %s", _file);
/* TODO Make resilient to evil empty lines */
while( (line_len = getline(&line, &llen, zfile)) >= 0 ) {
line_cnt ++;
DEBUG("line %u, length %li, allocated %lu", line_cnt, line_len, llen);
/* getline includes the line break. ONLY UNIX ENDINGS!! */
if( line[line_len - 2] == '\n' )
line[line_len - 2] = '\0';
if ( zonefile_parse_line(_database, line) < 0) {
LOGPRINTF(_LOG_ERROR, "Error is in line %u", line_cnt)
return -1;
}
free(line);
line = NULL;
}
fclose(zfile);
return 0;
}
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