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RRTcodebaseC

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}
if (tokens != NULL) {
for (i = parser->toknext - 1; i >= 0; i--) {
/* Unmatched opened object or array */
if (tokens[i].start != -1 && tokens[i].end == -1) {
return JSMN_ERROR_PART;
}
}
}
return count;
}
/**
* Creates a new parser based over a given buffer with an array of tokens
* available.
*/
void jsmn_init(jsmn_parser *parser) {
parser->pos = 0;
parser->toknext = 0;
parser->toksuper = -1;
}
```
Filename: dc_key.c
```c
#include <ctype.h>
#include <memory.h>
#include "dc_context.h"
#include "dc_key.h"
#include "dc_pgp.h"
#include "dc_tools.h"
void dc_wipe_secret_mem(void* buf, size_t buf_bytes)
{
/* wipe private keys or othere secrets with zeros so that secrets are no longer in RAM */
if (buf==NULL || buf_bytes <= 0) {
return;
}
memset(buf, 0x00, buf_bytes);
}
static void dc_key_empty(dc_key_t* key) /* only use before calling setters; take care when using this function together with reference counting, prefer new objects instead */
{
if (key==NULL) {
return;
}
if (key->type==DC_KEY_PRIVATE) {
dc_wipe_secret_mem(key->binary, key->bytes);
}
free(key->binary);
key->binary = NULL;
key->bytes = 0;
key->type = DC_KEY_PUBLIC;
}
dc_key_t* dc_key_new()
{
dc_key_t* key;
if ((key=calloc(1, sizeof(dc_key_t)))==NULL) {
exit(44); /* cannot allocate little memory, unrecoverable error */
}
key->_m_heap_refcnt = 1;
return key;
}
dc_key_t* dc_key_ref(dc_key_t* key)
{
if (key==NULL) {
return NULL;
}
key->_m_heap_refcnt++;
return key;
}
void dc_key_unref(dc_key_t* key)
{
if (key==NULL) {
return;
}
key->_m_heap_refcnt--;
if (key->_m_heap_refcnt != 0) {
return;
}
dc_key_empty(key);