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tlvdb_change_or_add_node() works. added tlvdb_find_full()

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This commit is contained in:
merlokk 2018-08-27 20:00:35 +03:00
commit c1feddf2f3
2 changed files with 40 additions and 4 deletions
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43
client/emv/tlv.c
View file

@ -318,6 +318,24 @@ struct tlvdb *tlvdb_find(struct tlvdb *tlvdb, tlv_tag_t tag) {
return NULL;
}
struct tlvdb *tlvdb_find_full(struct tlvdb *tlvdb, tlv_tag_t tag) {
if (!tlvdb)
return NULL;
for (; tlvdb; tlvdb = tlvdb->next) {
if (tlvdb->tag.tag == tag)
return tlvdb;
if (tlvdb->children) {
struct tlvdb * ch = tlvdb_find_full(tlvdb->children, tag);
if (ch)
return ch;
}
}
return NULL;
}
struct tlvdb *tlvdb_find_path(struct tlvdb *tlvdb, tlv_tag_t tag[]) {
int i = 0;
struct tlvdb *tnext = tlvdb;
@ -344,7 +362,7 @@ void tlvdb_add(struct tlvdb *tlvdb, struct tlvdb *other)
void tlvdb_change_or_add_node(struct tlvdb *tlvdb, tlv_tag_t tag, size_t len, const unsigned char *value)
{
struct tlvdb *telm = tlvdb_find(tlvdb, tag);
struct tlvdb *telm = tlvdb_find_full(tlvdb, tag);
if (telm == NULL) {
// new tlv element
tlvdb_add(tlvdb, tlvdb_fixed(tag, len, value));
@ -353,19 +371,36 @@ void tlvdb_change_or_add_node(struct tlvdb *tlvdb, tlv_tag_t tag, size_t len, co
if (telm->tag.tag == tag && telm->tag.len == len && !memcmp(telm->tag.value, value, len))
return;
PrintAndLog("-replace %x", tag);
// replace tlv element
struct tlvdb *tnewelm = tlvdb_fixed(tag, len, value);
tnewelm->next = telm->next;
tnewelm->parent = telm->parent;
// if elm stays 1st in children link
if (telm->parent && telm->parent->children == telm) {
telm->parent->children = tnewelm;
}
// if elm have prev element
if (telm != tlvdb) {
// elm in root
struct tlvdb *celm = tlvdb;
// elm in child list of node
if (telm->parent && telm->parent->children)
celm = telm->parent->children;
// telm->next = NULL;
// tlvdb_free(telm);
// find previous element
for (; celm; celm = celm->next) {
if (celm->next == telm) {
celm->next = tnewelm;
break;
}
}
}
// free old element
telm->next = NULL;
tlvdb_free(telm);
}
return;

1
client/emv/tlv.h
View file

@ -39,6 +39,7 @@ struct tlvdb *tlvdb_parse(const unsigned char *buf, size_t len);
struct tlvdb *tlvdb_parse_multi(const unsigned char *buf, size_t len);
void tlvdb_free(struct tlvdb *tlvdb);
struct tlvdb *tlvdb_find_full(struct tlvdb *tlvdb, tlv_tag_t tag); // search also in childrens
struct tlvdb *tlvdb_find(struct tlvdb *tlvdb, tlv_tag_t tag);
struct tlvdb *tlvdb_find_next(struct tlvdb *tlvdb, tlv_tag_t tag);
struct tlvdb *tlvdb_find_path(struct tlvdb *tlvdb, tlv_tag_t tag[]);