1321 lines
30 KiB
C
1321 lines
30 KiB
C
/*
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* str2host.c
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*
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* conversion routines from the presentation format
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* to the host format
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*
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* a Net::DNS like library for C
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*
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* (c) NLnet Labs, 2004-2006
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*
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* See the file LICENSE for the license
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*/
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#include <ldns/config.h>
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#include <ldns/ldns.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#include <time.h>
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#include <errno.h>
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#include <limits.h>
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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ldns_status
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ldns_str2rdf_int16(ldns_rdf **rd, const char *shortstr)
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{
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char *end = NULL;
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uint16_t *r;
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r = LDNS_MALLOC(uint16_t);
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if(!r) return LDNS_STATUS_MEM_ERR;
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*r = htons((uint16_t)strtol((char *)shortstr, &end, 10));
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if(*end != 0) {
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LDNS_FREE(r);
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return LDNS_STATUS_INVALID_INT;
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} else {
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*rd = ldns_rdf_new_frm_data(
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LDNS_RDF_TYPE_INT16, sizeof(uint16_t), r);
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LDNS_FREE(r);
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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}
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}
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ldns_status
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ldns_str2rdf_time(ldns_rdf **rd, const char *time)
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{
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/* convert a time YYYYDDMMHHMMSS to wireformat */
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uint16_t *r = NULL;
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struct tm tm;
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uint32_t l;
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char *end;
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/* Try to scan the time... */
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r = (uint16_t*)LDNS_MALLOC(uint32_t);
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if(!r) return LDNS_STATUS_MEM_ERR;
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memset(&tm, 0, sizeof(tm));
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if (strlen(time) == 14 &&
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sscanf(time, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6
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) {
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tm.tm_year -= 1900;
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tm.tm_mon--;
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/* Check values */
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if (tm.tm_year < 70) {
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goto bad_format;
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}
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if (tm.tm_mon < 0 || tm.tm_mon > 11) {
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goto bad_format;
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}
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if (tm.tm_mday < 1 || tm.tm_mday > 31) {
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goto bad_format;
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}
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if (tm.tm_hour < 0 || tm.tm_hour > 23) {
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goto bad_format;
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}
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if (tm.tm_min < 0 || tm.tm_min > 59) {
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goto bad_format;
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}
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if (tm.tm_sec < 0 || tm.tm_sec > 59) {
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goto bad_format;
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}
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l = htonl(mktime_from_utc(&tm));
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memcpy(r, &l, sizeof(uint32_t));
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*rd = ldns_rdf_new_frm_data(
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LDNS_RDF_TYPE_TIME, sizeof(uint32_t), r);
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LDNS_FREE(r);
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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} else {
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/* handle it as 32 bits timestamp */
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l = htonl((uint32_t)strtol((char*)time, &end, 10));
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if(*end != 0) {
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LDNS_FREE(r);
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return LDNS_STATUS_ERR;
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} else {
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memcpy(r, &l, sizeof(uint32_t));
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*rd = ldns_rdf_new_frm_data(
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LDNS_RDF_TYPE_INT32, sizeof(uint32_t), r);
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LDNS_FREE(r);
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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}
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}
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bad_format:
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LDNS_FREE(r);
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return LDNS_STATUS_INVALID_TIME;
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}
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ldns_status
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ldns_str2rdf_nsec3_salt(ldns_rdf **rd, const char *salt_str)
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{
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uint8_t salt_length;
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int c;
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int salt_length_str;
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uint8_t *salt;
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uint8_t *data;
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if(rd == NULL) {
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return LDNS_STATUS_NULL;
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}
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salt_length_str = (int)strlen(salt_str);
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if (salt_length_str == 1 && salt_str[0] == '-') {
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salt_length_str = 0;
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} else if (salt_length_str % 2 != 0) {
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return LDNS_STATUS_INVALID_HEX;
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}
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if (salt_length_str > 512) {
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return LDNS_STATUS_INVALID_HEX;
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}
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salt = LDNS_XMALLOC(uint8_t, salt_length_str / 2);
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if(!salt) {
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return LDNS_STATUS_MEM_ERR;
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}
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for (c = 0; c < salt_length_str; c += 2) {
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if (isxdigit((int) salt_str[c]) && isxdigit((int) salt_str[c+1])) {
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salt[c/2] = (uint8_t) ldns_hexdigit_to_int(salt_str[c]) * 16 +
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ldns_hexdigit_to_int(salt_str[c+1]);
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} else {
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LDNS_FREE(salt);
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return LDNS_STATUS_INVALID_HEX;
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}
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}
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salt_length = (uint8_t) (salt_length_str / 2);
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data = LDNS_XMALLOC(uint8_t, 1 + salt_length);
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if(!data) {
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LDNS_FREE(salt);
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return LDNS_STATUS_MEM_ERR;
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}
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data[0] = salt_length;
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memcpy(&data[1], salt, salt_length);
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*rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_NSEC3_SALT, 1 + salt_length, data);
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LDNS_FREE(data);
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LDNS_FREE(salt);
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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}
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ldns_status
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ldns_str2rdf_period(ldns_rdf **rd,const char *period)
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{
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uint32_t p;
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const char *end;
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/* Allocate required space... */
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p = ldns_str2period(period, &end);
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if (*end != 0) {
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return LDNS_STATUS_ERR;
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} else {
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p = (uint32_t) htonl(p);
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*rd = ldns_rdf_new_frm_data(
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LDNS_RDF_TYPE_PERIOD, sizeof(uint32_t), &p);
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}
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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}
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ldns_status
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ldns_str2rdf_int32(ldns_rdf **rd, const char *longstr)
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{
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char *end;
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uint16_t *r = NULL;
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uint32_t l;
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r = (uint16_t*)LDNS_MALLOC(uint32_t);
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if(!r) return LDNS_STATUS_MEM_ERR;
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errno = 0; /* must set to zero before call,
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note race condition on errno */
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if(*longstr == '-')
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l = htonl((uint32_t)strtol((char*)longstr, &end, 10));
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else l = htonl((uint32_t)strtoul((char*)longstr, &end, 10));
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if(*end != 0) {
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LDNS_FREE(r);
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return LDNS_STATUS_ERR;
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} else {
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if (errno == ERANGE) {
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LDNS_FREE(r);
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return LDNS_STATUS_SYNTAX_INTEGER_OVERFLOW;
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}
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memcpy(r, &l, sizeof(uint32_t));
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*rd = ldns_rdf_new_frm_data(
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LDNS_RDF_TYPE_INT32, sizeof(uint32_t), r);
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LDNS_FREE(r);
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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}
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}
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ldns_status
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ldns_str2rdf_int8(ldns_rdf **rd, const char *bytestr)
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{
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char *end;
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uint8_t *r = NULL;
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r = LDNS_MALLOC(uint8_t);
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if(!r) return LDNS_STATUS_MEM_ERR;
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*r = (uint8_t)strtol((char*)bytestr, &end, 10);
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if(*end != 0) {
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LDNS_FREE(r);
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return LDNS_STATUS_ERR;
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} else {
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*rd = ldns_rdf_new_frm_data(
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LDNS_RDF_TYPE_INT8, sizeof(uint8_t), r);
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LDNS_FREE(r);
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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}
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}
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/*
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* Checks whether the escaped value at **s is an octal value or
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* a 'normally' escaped character (and not eos)
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*
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* The string pointer at *s is increased by either 0 (on error), 1 (on
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* normal escapes), or 3 (on octals)
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*
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* Returns the number of bytes read from the escaped string, or
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* 0 on error
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*/
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static int
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parse_escape(uint8_t *s, uint8_t *q) {
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uint16_t val;
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if (strlen((char *)s) > 3 &&
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isdigit((int) s[1]) &&
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isdigit((int) s[2]) &&
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isdigit((int) s[3])) {
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/* cast this so it fits */
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val = (uint16_t) ldns_hexdigit_to_int((char) s[1]) * 100 +
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ldns_hexdigit_to_int((char) s[2]) * 10 +
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ldns_hexdigit_to_int((char) s[3]);
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if (val > 255) {
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/* outside range */
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return 0;
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}
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*q = (uint8_t) val;
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return 3;
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} else {
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s++;
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if (*s == '\0' || isdigit((int) *s)) {
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/* apparently the string terminator
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* or a digit has been escaped...
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*/
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return 0;
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}
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*q = *s;
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return 1;
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}
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}
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/*
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* No special care is taken, all dots are translated into
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* label seperators.
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* Could be made more efficient....we do 3 memcpy's in total...
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*/
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ldns_status
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ldns_str2rdf_dname(ldns_rdf **d, const char *str)
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{
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size_t len;
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int esc;
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uint8_t *s, *q, *pq, label_len;
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uint8_t buf[LDNS_MAX_DOMAINLEN + 1];
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*d = NULL;
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len = strlen((char*)str);
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/* octet representation can make strings a lot longer than actual length */
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if (len > LDNS_MAX_DOMAINLEN * 4) {
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return LDNS_STATUS_DOMAINNAME_OVERFLOW;
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}
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if (0 == len) {
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return LDNS_STATUS_DOMAINNAME_UNDERFLOW;
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}
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/* root label */
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if (1 == len && *str == '.') {
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*d = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_DNAME, 1, "\0");
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return LDNS_STATUS_OK;
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}
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/* get on with the rest */
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/* s is on the current character in the string
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* pq points to where the labellength is going to go
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* label_len keeps track of the current label's length
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* q builds the dname inside the buf array
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*/
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len = 0;
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q = buf+1;
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pq = buf;
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label_len = 0;
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for (s = (uint8_t *)str; *s; s++, q++) {
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if (q > buf + LDNS_MAX_DOMAINLEN) {
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return LDNS_STATUS_DOMAINNAME_OVERFLOW;
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}
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*q = 0;
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switch (*s) {
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case '.':
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if (label_len > LDNS_MAX_LABELLEN) {
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return LDNS_STATUS_LABEL_OVERFLOW;
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}
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if (label_len == 0) {
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return LDNS_STATUS_EMPTY_LABEL;
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}
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len += label_len + 1;
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*pq = label_len;
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label_len = 0;
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pq = q;
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break;
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case '\\':
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/* octet value or literal char */
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esc = parse_escape(s, q);
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if (esc > 0) {
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s += esc;
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label_len++;
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} else {
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return LDNS_STATUS_SYNTAX_BAD_ESCAPE;
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}
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break;
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default:
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*q = *s;
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label_len++;
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}
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}
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/* add root label if last char was not '.' */
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if (!ldns_dname_str_absolute(str)) {
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if (q > buf + LDNS_MAX_DOMAINLEN) {
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return LDNS_STATUS_DOMAINNAME_OVERFLOW;
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}
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if (label_len > LDNS_MAX_LABELLEN) {
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return LDNS_STATUS_LABEL_OVERFLOW;
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}
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if (label_len == 0) { /* label_len 0 but not . at end? */
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return LDNS_STATUS_EMPTY_LABEL;
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}
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len += label_len + 1;
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*pq = label_len;
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*q = 0;
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}
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len++;
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*d = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_DNAME, len, buf);
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return LDNS_STATUS_OK;
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}
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ldns_status
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ldns_str2rdf_a(ldns_rdf **rd, const char *str)
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{
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in_addr_t address;
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if (inet_pton(AF_INET, (char*)str, &address) != 1) {
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return LDNS_STATUS_INVALID_IP4;
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} else {
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*rd = ldns_rdf_new_frm_data(
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LDNS_RDF_TYPE_A, sizeof(address), &address);
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}
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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}
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ldns_status
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ldns_str2rdf_aaaa(ldns_rdf **rd, const char *str)
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{
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uint8_t address[LDNS_IP6ADDRLEN + 1];
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if (inet_pton(AF_INET6, (char*)str, address) != 1) {
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return LDNS_STATUS_INVALID_IP6;
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} else {
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*rd = ldns_rdf_new_frm_data(
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LDNS_RDF_TYPE_AAAA, sizeof(address) - 1, &address);
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}
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return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
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}
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|
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ldns_status
|
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ldns_str2rdf_str(ldns_rdf **rd, const char *str)
|
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{
|
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uint8_t *data;
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size_t i, str_i, esc_i;
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|
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if (strlen(str) > 255) {
|
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return LDNS_STATUS_INVALID_STR;
|
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}
|
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|
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data = LDNS_XMALLOC(uint8_t, strlen(str) + 1);
|
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if(!data) return LDNS_STATUS_MEM_ERR;
|
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i = 1;
|
|
|
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for (str_i = 0; str_i < strlen(str); str_i++) {
|
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if (str[str_i] == '\\') {
|
|
/* octet value or literal char */
|
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esc_i = (size_t) parse_escape((uint8_t*) &str[str_i], (uint8_t*) &data[i]);
|
|
if (esc_i == 0) {
|
|
LDNS_FREE(data);
|
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return LDNS_STATUS_SYNTAX_BAD_ESCAPE;
|
|
}
|
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str_i += esc_i;
|
|
} else {
|
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data[i] = (uint8_t) str[str_i];
|
|
}
|
|
i++;
|
|
}
|
|
data[0] = i - 1;
|
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*rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_STR, i, data);
|
|
|
|
LDNS_FREE(data);
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
ldns_status
|
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ldns_str2rdf_apl(ldns_rdf **rd, const char *str)
|
|
{
|
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const char *my_str = str;
|
|
|
|
char *my_ip_str;
|
|
size_t ip_str_len;
|
|
|
|
uint16_t family;
|
|
bool negation;
|
|
uint8_t afdlength = 0;
|
|
uint8_t *afdpart;
|
|
uint8_t prefix;
|
|
|
|
uint8_t *data;
|
|
|
|
size_t i = 0;
|
|
|
|
/* [!]afi:address/prefix */
|
|
if (strlen(my_str) < 2
|
|
|| strchr(my_str, ':') == NULL
|
|
|| strchr(my_str, '/') == NULL
|
|
|| strchr(my_str, ':') > strchr(my_str, '/')) {
|
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return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
if (my_str[0] == '!') {
|
|
negation = true;
|
|
my_str += 1;
|
|
} else {
|
|
negation = false;
|
|
}
|
|
|
|
family = (uint16_t) atoi(my_str);
|
|
|
|
my_str = strchr(my_str, ':') + 1;
|
|
|
|
/* need ip addr and only ip addr for inet_pton */
|
|
ip_str_len = (size_t) (strchr(my_str, '/') - my_str);
|
|
my_ip_str = LDNS_XMALLOC(char, ip_str_len + 1);
|
|
if(!my_ip_str) return LDNS_STATUS_MEM_ERR;
|
|
strncpy(my_ip_str, my_str, ip_str_len + 1);
|
|
my_ip_str[ip_str_len] = '\0';
|
|
|
|
if (family == 1) {
|
|
/* ipv4 */
|
|
afdpart = LDNS_XMALLOC(uint8_t, 4);
|
|
if(!afdpart) {
|
|
LDNS_FREE(my_ip_str);
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
if (inet_pton(AF_INET, my_ip_str, afdpart) == 0) {
|
|
LDNS_FREE(my_ip_str);
|
|
LDNS_FREE(afdpart);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
for (i = 0; i < 4; i++) {
|
|
if (afdpart[i] != 0) {
|
|
afdlength = i + 1;
|
|
}
|
|
}
|
|
} else if (family == 2) {
|
|
/* ipv6 */
|
|
afdpart = LDNS_XMALLOC(uint8_t, 16);
|
|
if(!afdpart) {
|
|
LDNS_FREE(my_ip_str);
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
if (inet_pton(AF_INET6, my_ip_str, afdpart) == 0) {
|
|
LDNS_FREE(my_ip_str);
|
|
LDNS_FREE(afdpart);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
for (i = 0; i < 16; i++) {
|
|
if (afdpart[i] != 0) {
|
|
afdlength = i + 1;
|
|
}
|
|
}
|
|
} else {
|
|
/* unknown family */
|
|
LDNS_FREE(my_ip_str);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
my_str = strchr(my_str, '/') + 1;
|
|
prefix = (uint8_t) atoi(my_str);
|
|
|
|
data = LDNS_XMALLOC(uint8_t, 4 + afdlength);
|
|
if(!data) {
|
|
LDNS_FREE(my_ip_str);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
ldns_write_uint16(data, family);
|
|
data[2] = prefix;
|
|
data[3] = afdlength;
|
|
if (negation) {
|
|
/* set bit 1 of byte 3 */
|
|
data[3] = data[3] | 0x80;
|
|
}
|
|
|
|
memcpy(data + 4, afdpart, afdlength);
|
|
|
|
*rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_APL, afdlength + 4, data);
|
|
LDNS_FREE(afdpart);
|
|
LDNS_FREE(data);
|
|
LDNS_FREE(my_ip_str);
|
|
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_b64(ldns_rdf **rd, const char *str)
|
|
{
|
|
uint8_t *buffer;
|
|
int16_t i;
|
|
|
|
buffer = LDNS_XMALLOC(uint8_t, ldns_b64_ntop_calculate_size(strlen(str)));
|
|
if(!buffer) {
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
i = (uint16_t)ldns_b64_pton((const char*)str, buffer,
|
|
ldns_b64_ntop_calculate_size(strlen(str)));
|
|
if (-1 == i) {
|
|
LDNS_FREE(buffer);
|
|
return LDNS_STATUS_INVALID_B64;
|
|
} else {
|
|
*rd = ldns_rdf_new_frm_data(
|
|
LDNS_RDF_TYPE_B64, (uint16_t) i, buffer);
|
|
}
|
|
LDNS_FREE(buffer);
|
|
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_b32_ext(ldns_rdf **rd, const char *str)
|
|
{
|
|
uint8_t *buffer;
|
|
int i;
|
|
/* first byte contains length of actual b32 data */
|
|
uint8_t len = ldns_b32_pton_calculate_size(strlen(str));
|
|
buffer = LDNS_XMALLOC(uint8_t, len + 1);
|
|
if(!buffer) {
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
buffer[0] = len;
|
|
|
|
i = ldns_b32_pton_extended_hex((const char*)str, strlen(str), buffer + 1,
|
|
ldns_b32_ntop_calculate_size(strlen(str)));
|
|
if (i < 0) {
|
|
LDNS_FREE(buffer);
|
|
return LDNS_STATUS_INVALID_B32_EXT;
|
|
} else {
|
|
*rd = ldns_rdf_new_frm_data(
|
|
LDNS_RDF_TYPE_B32_EXT, (uint16_t) i + 1, buffer);
|
|
}
|
|
LDNS_FREE(buffer);
|
|
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_hex(ldns_rdf **rd, const char *str)
|
|
{
|
|
uint8_t *t, *t_orig;
|
|
int i;
|
|
size_t len;
|
|
|
|
len = strlen(str);
|
|
|
|
if (len > LDNS_MAX_RDFLEN * 2) {
|
|
return LDNS_STATUS_LABEL_OVERFLOW;
|
|
} else {
|
|
t = LDNS_XMALLOC(uint8_t, (len / 2) + 1);
|
|
if(!t) {
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
t_orig = t;
|
|
/* Now process octet by octet... */
|
|
while (*str) {
|
|
*t = 0;
|
|
if (isspace((int) *str)) {
|
|
str++;
|
|
} else {
|
|
for (i = 16; i >= 1; i -= 15) {
|
|
while (*str && isspace((int) *str)) { str++; }
|
|
if (*str) {
|
|
if (isxdigit((int) *str)) {
|
|
*t += ldns_hexdigit_to_int(*str) * i;
|
|
} else {
|
|
LDNS_FREE(t_orig);
|
|
return LDNS_STATUS_ERR;
|
|
}
|
|
++str;
|
|
}
|
|
}
|
|
++t;
|
|
}
|
|
}
|
|
*rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_HEX,
|
|
(size_t) (t - t_orig),
|
|
t_orig);
|
|
LDNS_FREE(t_orig);
|
|
}
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_nsec(ldns_rdf **rd, const char *str)
|
|
{
|
|
const char *delimiters = "\n\t ";
|
|
char *token = LDNS_XMALLOC(char, LDNS_MAX_RDFLEN);
|
|
ldns_buffer *str_buf;
|
|
ssize_t c;
|
|
uint16_t cur_type;
|
|
size_t type_count = 0;
|
|
ldns_rr_type type_list[65536];
|
|
if(!token) return LDNS_STATUS_MEM_ERR;
|
|
if(rd == NULL) {
|
|
LDNS_FREE(token);
|
|
return LDNS_STATUS_NULL;
|
|
}
|
|
|
|
str_buf = LDNS_MALLOC(ldns_buffer);
|
|
if(!str_buf) {
|
|
LDNS_FREE(token);
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
ldns_buffer_new_frm_data(str_buf, (char *)str, strlen(str));
|
|
if(ldns_buffer_status(str_buf) != LDNS_STATUS_OK) {
|
|
LDNS_FREE(str_buf);
|
|
LDNS_FREE(token);
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
while ((c = ldns_bget_token(str_buf, token, delimiters, LDNS_MAX_RDFLEN)) != -1 && c != 0) {
|
|
if(type_count >= sizeof(type_list)) {
|
|
LDNS_FREE(str_buf);
|
|
LDNS_FREE(token);
|
|
return LDNS_STATUS_ERR;
|
|
}
|
|
cur_type = ldns_get_rr_type_by_name(token);
|
|
type_list[type_count] = cur_type;
|
|
type_count++;
|
|
}
|
|
|
|
*rd = ldns_dnssec_create_nsec_bitmap(type_list,
|
|
type_count,
|
|
LDNS_RR_TYPE_NSEC);
|
|
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_type(ldns_rdf **rd, const char *str)
|
|
{
|
|
uint16_t type;
|
|
type = htons(ldns_get_rr_type_by_name(str));
|
|
/* ldns_rr_type is a 16 bit value */
|
|
*rd = ldns_rdf_new_frm_data(
|
|
LDNS_RDF_TYPE_TYPE, sizeof(uint16_t), &type);
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_class(ldns_rdf **rd, const char *str)
|
|
{
|
|
uint16_t klass;
|
|
klass = htons(ldns_get_rr_class_by_name(str));
|
|
/* class is 16 bit */
|
|
*rd = ldns_rdf_new_frm_data(
|
|
LDNS_RDF_TYPE_CLASS, sizeof(uint16_t), &klass);
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
/* An certificate alg field can either be specified as a 8 bits number
|
|
* or by its symbolic name. Handle both
|
|
*/
|
|
ldns_status
|
|
ldns_str2rdf_cert_alg(ldns_rdf **rd, const char *str)
|
|
{
|
|
ldns_lookup_table *lt;
|
|
ldns_status st;
|
|
uint8_t idd[2];
|
|
lt = ldns_lookup_by_name(ldns_cert_algorithms, str);
|
|
st = LDNS_STATUS_OK;
|
|
|
|
if (lt) {
|
|
ldns_write_uint16(idd, (uint16_t) lt->id);
|
|
*rd = ldns_rdf_new_frm_data(
|
|
LDNS_RDF_TYPE_INT16, sizeof(uint16_t), idd);
|
|
if (!*rd) {
|
|
st = LDNS_STATUS_ERR;
|
|
}
|
|
} else {
|
|
/* try as-is (a number) */
|
|
st = ldns_str2rdf_int16(rd, str);
|
|
if (st == LDNS_STATUS_OK &&
|
|
ldns_rdf2native_int16(*rd) == 0) {
|
|
st = LDNS_STATUS_CERT_BAD_ALGORITHM;
|
|
}
|
|
}
|
|
|
|
return st;
|
|
}
|
|
|
|
/* An alg field can either be specified as a 8 bits number
|
|
* or by its symbolic name. Handle both
|
|
*/
|
|
ldns_status
|
|
ldns_str2rdf_alg(ldns_rdf **rd, const char *str)
|
|
{
|
|
ldns_lookup_table *lt;
|
|
ldns_status st;
|
|
|
|
lt = ldns_lookup_by_name(ldns_algorithms, str);
|
|
st = LDNS_STATUS_OK;
|
|
|
|
if (lt) {
|
|
/* it was given as a integer */
|
|
*rd = ldns_native2rdf_int8(LDNS_RDF_TYPE_INT8, (uint8_t) lt->id);
|
|
if (!*rd) {
|
|
st = LDNS_STATUS_ERR;
|
|
}
|
|
} else {
|
|
/* try as-is (a number) */
|
|
st = ldns_str2rdf_int8(rd, str);
|
|
}
|
|
return st;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_unknown( ATTR_UNUSED(ldns_rdf **rd)
|
|
, ATTR_UNUSED(const char *str)
|
|
)
|
|
{
|
|
/* this should be caught in an earlier time (general str2host for
|
|
rr's */
|
|
return LDNS_STATUS_NOT_IMPL;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_tsig( ATTR_UNUSED(ldns_rdf **rd)
|
|
, ATTR_UNUSED(const char *str)
|
|
)
|
|
{
|
|
/* there is no string representation for TSIG rrs */
|
|
return LDNS_STATUS_NOT_IMPL;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_service( ATTR_UNUSED(ldns_rdf **rd)
|
|
, ATTR_UNUSED(const char *str)
|
|
)
|
|
{
|
|
/* is this used? is this actually WKS? or SRV? */
|
|
return LDNS_STATUS_NOT_IMPL;
|
|
}
|
|
|
|
static int
|
|
loc_parse_cm(char* my_str, char** endstr, uint8_t* m, uint8_t* e)
|
|
{
|
|
/* read <digits>[.<digits>][mM] */
|
|
/* into mantissa exponent format for LOC type */
|
|
uint32_t meters = 0, cm = 0, val;
|
|
while (isblank(*my_str)) {
|
|
my_str++;
|
|
}
|
|
meters = (uint32_t)strtol(my_str, &my_str, 10);
|
|
if (*my_str == '.') {
|
|
my_str++;
|
|
cm = (uint32_t)strtol(my_str, &my_str, 10);
|
|
}
|
|
if (meters >= 1) {
|
|
*e = 2;
|
|
val = meters;
|
|
} else {
|
|
*e = 0;
|
|
val = cm;
|
|
}
|
|
while(val >= 10) {
|
|
(*e)++;
|
|
val /= 10;
|
|
}
|
|
*m = (uint8_t)val;
|
|
|
|
if (*e > 9)
|
|
return 0;
|
|
if (*my_str == 'm' || *my_str == 'M') {
|
|
my_str++;
|
|
}
|
|
*endstr = my_str;
|
|
return 1;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_loc(ldns_rdf **rd, const char *str)
|
|
{
|
|
uint32_t latitude = 0;
|
|
uint32_t longitude = 0;
|
|
uint32_t altitude = 0;
|
|
|
|
uint8_t *data;
|
|
uint32_t equator = (uint32_t) ldns_power(2, 31);
|
|
|
|
uint32_t h = 0;
|
|
uint32_t m = 0;
|
|
uint8_t size_b = 1, size_e = 2;
|
|
uint8_t horiz_pre_b = 1, horiz_pre_e = 6;
|
|
uint8_t vert_pre_b = 1, vert_pre_e = 3;
|
|
|
|
double s = 0.0;
|
|
bool northerness;
|
|
bool easterness;
|
|
|
|
char *my_str = (char *) str;
|
|
|
|
/* only support version 0 */
|
|
if (isdigit((int) *my_str)) {
|
|
h = (uint32_t) strtol(my_str, &my_str, 10);
|
|
} else {
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
while (isblank((int) *my_str)) {
|
|
my_str++;
|
|
}
|
|
|
|
if (isdigit((int) *my_str)) {
|
|
m = (uint32_t) strtol(my_str, &my_str, 10);
|
|
} else if (*my_str == 'N' || *my_str == 'S') {
|
|
goto north;
|
|
} else {
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
while (isblank((int) *my_str)) {
|
|
my_str++;
|
|
}
|
|
|
|
if (isdigit((int) *my_str)) {
|
|
s = strtod(my_str, &my_str);
|
|
}
|
|
north:
|
|
while (isblank((int) *my_str)) {
|
|
my_str++;
|
|
}
|
|
|
|
if (*my_str == 'N') {
|
|
northerness = true;
|
|
} else if (*my_str == 'S') {
|
|
northerness = false;
|
|
} else {
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
my_str++;
|
|
|
|
/* store number */
|
|
s = 1000.0 * s;
|
|
/* add a little to make floor in conversion a round */
|
|
s += 0.0005;
|
|
latitude = (uint32_t) s;
|
|
latitude += 1000 * 60 * m;
|
|
latitude += 1000 * 60 * 60 * h;
|
|
if (northerness) {
|
|
latitude = equator + latitude;
|
|
} else {
|
|
latitude = equator - latitude;
|
|
}
|
|
while (isblank(*my_str)) {
|
|
my_str++;
|
|
}
|
|
|
|
if (isdigit((int) *my_str)) {
|
|
h = (uint32_t) strtol(my_str, &my_str, 10);
|
|
} else {
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
while (isblank((int) *my_str)) {
|
|
my_str++;
|
|
}
|
|
|
|
if (isdigit((int) *my_str)) {
|
|
m = (uint32_t) strtol(my_str, &my_str, 10);
|
|
} else if (*my_str == 'E' || *my_str == 'W') {
|
|
goto east;
|
|
} else {
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
while (isblank(*my_str)) {
|
|
my_str++;
|
|
}
|
|
|
|
if (isdigit((int) *my_str)) {
|
|
s = strtod(my_str, &my_str);
|
|
}
|
|
|
|
east:
|
|
while (isblank(*my_str)) {
|
|
my_str++;
|
|
}
|
|
|
|
if (*my_str == 'E') {
|
|
easterness = true;
|
|
} else if (*my_str == 'W') {
|
|
easterness = false;
|
|
} else {
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
my_str++;
|
|
|
|
/* store number */
|
|
s *= 1000.0;
|
|
/* add a little to make floor in conversion a round */
|
|
s += 0.0005;
|
|
longitude = (uint32_t) s;
|
|
longitude += 1000 * 60 * m;
|
|
longitude += 1000 * 60 * 60 * h;
|
|
|
|
if (easterness) {
|
|
longitude += equator;
|
|
} else {
|
|
longitude = equator - longitude;
|
|
}
|
|
|
|
altitude = (uint32_t)(strtod(my_str, &my_str)*100.0 +
|
|
10000000.0 + 0.5);
|
|
if (*my_str == 'm' || *my_str == 'M') {
|
|
my_str++;
|
|
}
|
|
|
|
if (strlen(my_str) > 0) {
|
|
if(!loc_parse_cm(my_str, &my_str, &size_b, &size_e))
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
if (strlen(my_str) > 0) {
|
|
if(!loc_parse_cm(my_str, &my_str, &horiz_pre_b, &horiz_pre_e))
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
if (strlen(my_str) > 0) {
|
|
if(!loc_parse_cm(my_str, &my_str, &vert_pre_b, &vert_pre_e))
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
data = LDNS_XMALLOC(uint8_t, 16);
|
|
if(!data) {
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
data[0] = 0;
|
|
data[1] = 0;
|
|
data[1] = ((size_b << 4) & 0xf0) | (size_e & 0x0f);
|
|
data[2] = ((horiz_pre_b << 4) & 0xf0) | (horiz_pre_e & 0x0f);
|
|
data[3] = ((vert_pre_b << 4) & 0xf0) | (vert_pre_e & 0x0f);
|
|
ldns_write_uint32(data + 4, latitude);
|
|
ldns_write_uint32(data + 8, longitude);
|
|
ldns_write_uint32(data + 12, altitude);
|
|
|
|
*rd = ldns_rdf_new_frm_data(
|
|
LDNS_RDF_TYPE_LOC, 16, data);
|
|
|
|
LDNS_FREE(data);
|
|
return *rd?LDNS_STATUS_OK:LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_wks(ldns_rdf **rd, const char *str)
|
|
{
|
|
uint8_t *bitmap = NULL;
|
|
uint8_t *data;
|
|
int bm_len = 0;
|
|
|
|
struct protoent *proto = NULL;
|
|
struct servent *serv = NULL;
|
|
int serv_port;
|
|
|
|
ldns_buffer *str_buf;
|
|
|
|
char *proto_str = NULL;
|
|
char *token;
|
|
if(strlen(str) == 0)
|
|
token = LDNS_XMALLOC(char, 50);
|
|
else token = LDNS_XMALLOC(char, strlen(str)+2);
|
|
if(!token) return LDNS_STATUS_MEM_ERR;
|
|
|
|
str_buf = LDNS_MALLOC(ldns_buffer);
|
|
if(!str_buf) {LDNS_FREE(token); return LDNS_STATUS_MEM_ERR;}
|
|
ldns_buffer_new_frm_data(str_buf, (char *)str, strlen(str));
|
|
if(ldns_buffer_status(str_buf) != LDNS_STATUS_OK) {
|
|
LDNS_FREE(str_buf);
|
|
LDNS_FREE(token);
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
while(ldns_bget_token(str_buf, token, "\t\n ", strlen(str)) > 0) {
|
|
if (!proto_str) {
|
|
proto_str = strdup(token);
|
|
if (!proto_str) {
|
|
LDNS_FREE(bitmap);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
} else {
|
|
serv = getservbyname(token, proto_str);
|
|
if (serv) {
|
|
serv_port = (int) ntohs((uint16_t) serv->s_port);
|
|
} else {
|
|
serv_port = atoi(token);
|
|
}
|
|
if (serv_port / 8 >= bm_len) {
|
|
uint8_t *b2 = LDNS_XREALLOC(bitmap, uint8_t, (serv_port / 8) + 1);
|
|
if(!b2) {
|
|
LDNS_FREE(bitmap);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
free(proto_str);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
bitmap = b2;
|
|
/* set to zero to be sure */
|
|
for (; bm_len <= serv_port / 8; bm_len++) {
|
|
bitmap[bm_len] = 0;
|
|
}
|
|
}
|
|
ldns_set_bit(bitmap + (serv_port / 8), 7 - (serv_port % 8), true);
|
|
}
|
|
}
|
|
|
|
if (!proto_str || !bitmap) {
|
|
LDNS_FREE(bitmap);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
free(proto_str);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
data = LDNS_XMALLOC(uint8_t, bm_len + 1);
|
|
if(!data) {
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
LDNS_FREE(bitmap);
|
|
free(proto_str);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
if (proto_str)
|
|
proto = getprotobyname(proto_str);
|
|
if (proto) {
|
|
data[0] = (uint8_t) proto->p_proto;
|
|
} else if (proto_str) {
|
|
data[0] = (uint8_t) atoi(proto_str);
|
|
} else {
|
|
data[0] = 0;
|
|
}
|
|
memcpy(data + 1, bitmap, (size_t) bm_len);
|
|
|
|
*rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_WKS, (uint16_t) (bm_len + 1), data);
|
|
|
|
LDNS_FREE(data);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
LDNS_FREE(bitmap);
|
|
free(proto_str);
|
|
#ifdef HAVE_ENDSERVENT
|
|
endservent();
|
|
#endif
|
|
#ifdef HAVE_ENDPROTOENT
|
|
endprotoent();
|
|
#endif
|
|
|
|
if(!*rd) return LDNS_STATUS_MEM_ERR;
|
|
|
|
return LDNS_STATUS_OK;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_nsap(ldns_rdf **rd, const char *str)
|
|
{
|
|
size_t len, i;
|
|
char* nsap_str = (char*) str;
|
|
|
|
/* just a hex string with optional dots? */
|
|
if (str[0] != '0' || str[1] != 'x') {
|
|
return LDNS_STATUS_INVALID_STR;
|
|
} else {
|
|
len = strlen(str);
|
|
for (i=0; i < len; i++) {
|
|
if (nsap_str[i] == '.')
|
|
nsap_str[i] = ' ';
|
|
}
|
|
return ldns_str2rdf_hex(rd, str+2);
|
|
}
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_atma(ldns_rdf **rd, const char *str)
|
|
{
|
|
size_t len, i;
|
|
char* atma_str = (char*) str;
|
|
ldns_status status;
|
|
|
|
/* just a hex string with optional dots? */
|
|
len = strlen(str);
|
|
for (i=0; i < len; i++) {
|
|
if (atma_str[i] == '.')
|
|
atma_str[i] = ' ';
|
|
}
|
|
status = ldns_str2rdf_hex(rd, str);
|
|
if (status != LDNS_STATUS_OK) {
|
|
; /* probably in e.164 format than */
|
|
}
|
|
return status;
|
|
}
|
|
|
|
ldns_status
|
|
ldns_str2rdf_ipseckey(ldns_rdf **rd, const char *str)
|
|
{
|
|
uint8_t precedence = 0;
|
|
uint8_t gateway_type = 0;
|
|
uint8_t algorithm = 0;
|
|
char* gateway = NULL;
|
|
char* publickey = NULL;
|
|
uint8_t *data;
|
|
ldns_buffer *str_buf;
|
|
char *token;
|
|
int token_count = 0;
|
|
int ipseckey_len = 0;
|
|
ldns_rdf* gateway_rdf = NULL;
|
|
ldns_rdf* publickey_rdf = NULL;
|
|
ldns_status status = LDNS_STATUS_OK;
|
|
|
|
if(strlen(str) == 0)
|
|
token = LDNS_XMALLOC(char, 256);
|
|
else token = LDNS_XMALLOC(char, strlen(str)+2);
|
|
if(!token) return LDNS_STATUS_MEM_ERR;
|
|
|
|
str_buf = LDNS_MALLOC(ldns_buffer);
|
|
if(!str_buf) {LDNS_FREE(token); return LDNS_STATUS_MEM_ERR;}
|
|
ldns_buffer_new_frm_data(str_buf, (char *)str, strlen(str));
|
|
if(ldns_buffer_status(str_buf) != LDNS_STATUS_OK) {
|
|
LDNS_FREE(str_buf);
|
|
LDNS_FREE(token);
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
while(ldns_bget_token(str_buf, token, "\t\n ", strlen(str)) > 0) {
|
|
switch (token_count) {
|
|
case 0:
|
|
precedence = (uint8_t)atoi(token);
|
|
break;
|
|
case 1:
|
|
gateway_type = (uint8_t)atoi(token);
|
|
break;
|
|
case 2:
|
|
algorithm = (uint8_t)atoi(token);
|
|
break;
|
|
case 3:
|
|
gateway = strdup(token);
|
|
if (!gateway || (gateway_type == 0 &&
|
|
(token[0] != '.' || token[1] != '\0'))) {
|
|
LDNS_FREE(gateway);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
break;
|
|
case 4:
|
|
publickey = strdup(token);
|
|
break;
|
|
default:
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
break;
|
|
}
|
|
token_count++;
|
|
}
|
|
|
|
if (!gateway || !publickey) {
|
|
if (gateway)
|
|
LDNS_FREE(gateway);
|
|
if (publickey)
|
|
LDNS_FREE(publickey);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
if (gateway_type == 1) {
|
|
status = ldns_str2rdf_a(&gateway_rdf, gateway);
|
|
} else if (gateway_type == 2) {
|
|
status = ldns_str2rdf_aaaa(&gateway_rdf, gateway);
|
|
} else if (gateway_type == 3) {
|
|
status = ldns_str2rdf_dname(&gateway_rdf, gateway);
|
|
}
|
|
|
|
if (status != LDNS_STATUS_OK) {
|
|
if (gateway)
|
|
LDNS_FREE(gateway);
|
|
if (publickey)
|
|
LDNS_FREE(publickey);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
status = ldns_str2rdf_b64(&publickey_rdf, publickey);
|
|
|
|
if (status != LDNS_STATUS_OK) {
|
|
if (gateway)
|
|
LDNS_FREE(gateway);
|
|
if (publickey)
|
|
LDNS_FREE(publickey);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
if (gateway_rdf) ldns_rdf_free(gateway_rdf);
|
|
return LDNS_STATUS_INVALID_STR;
|
|
}
|
|
|
|
/* now copy all into one ipseckey rdf */
|
|
if (gateway_type)
|
|
ipseckey_len = 3 + (int)ldns_rdf_size(gateway_rdf) + (int)ldns_rdf_size(publickey_rdf);
|
|
else
|
|
ipseckey_len = 3 + (int)ldns_rdf_size(publickey_rdf);
|
|
|
|
data = LDNS_XMALLOC(uint8_t, ipseckey_len);
|
|
if(!data) {
|
|
if (gateway)
|
|
LDNS_FREE(gateway);
|
|
if (publickey)
|
|
LDNS_FREE(publickey);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
if (gateway_rdf) ldns_rdf_free(gateway_rdf);
|
|
if (publickey_rdf) ldns_rdf_free(publickey_rdf);
|
|
return LDNS_STATUS_MEM_ERR;
|
|
}
|
|
|
|
data[0] = precedence;
|
|
data[1] = gateway_type;
|
|
data[2] = algorithm;
|
|
|
|
if (gateway_type) {
|
|
memcpy(data + 3,
|
|
ldns_rdf_data(gateway_rdf), ldns_rdf_size(gateway_rdf));
|
|
memcpy(data + 3 + ldns_rdf_size(gateway_rdf),
|
|
ldns_rdf_data(publickey_rdf), ldns_rdf_size(publickey_rdf));
|
|
} else {
|
|
memcpy(data + 3,
|
|
ldns_rdf_data(publickey_rdf), ldns_rdf_size(publickey_rdf));
|
|
}
|
|
|
|
*rd = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_IPSECKEY, (uint16_t) ipseckey_len, data);
|
|
|
|
if (gateway)
|
|
LDNS_FREE(gateway);
|
|
if (publickey)
|
|
LDNS_FREE(publickey);
|
|
LDNS_FREE(token);
|
|
ldns_buffer_free(str_buf);
|
|
ldns_rdf_free(gateway_rdf);
|
|
ldns_rdf_free(publickey_rdf);
|
|
LDNS_FREE(data);
|
|
if(!*rd) return LDNS_STATUS_MEM_ERR;
|
|
return LDNS_STATUS_OK;
|
|
}
|