static CC *ed25519FromJSON(const cJSON *params, char *err) {
size_t binsz;
cJSON *pk_item = cJSON_GetObjectItem(params, "publicKey");
if (!cJSON_IsString(pk_item)) {
strcpy(err, "publicKey must be a string");
return NULL;
}
unsigned char *pk = base64_decode(pk_item->valuestring, &binsz);
if (32 != binsz) {
strcpy(err, "publicKey has incorrect length");
free(pk);
return NULL;
}
cJSON *signature_item = cJSON_GetObjectItem(params, "signature");
unsigned char *sig = NULL;
if (signature_item && !cJSON_IsNull(signature_item)) {
if (!cJSON_IsString(signature_item)) {
strcpy(err, "signature must be null or a string");
return NULL;
}
sig = base64_decode(signature_item->valuestring, &binsz);
if (64 != binsz) {
strcpy(err, "signature has incorrect length");
free(sig);
return NULL;
}
}
CC *cond = cc_new(CC_Ed25519);
cond->publicKey = pk;
cond->signature = sig;
return cond;
}
CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, cJSON *patch)
{
if (!cJSON_IsObject(patch))
{
/* scalar value, array or NULL, just duplicate */
cJSON_Delete(target);
return cJSON_Duplicate(patch, 1);
}
if (!cJSON_IsObject(target))
{
cJSON_Delete(target);
target = cJSON_CreateObject();
}
patch = patch->child;
while (patch)
{
if (cJSON_IsNull(patch))
{
/* NULL is the indicator to remove a value, see RFC7396 */
cJSON_DeleteItemFromObject(target, patch->string);
}
else
{
cJSON *replaceme = cJSON_DetachItemFromObject(target, patch->string);
cJSON_AddItemToObject(target, patch->string, cJSONUtils_MergePatch(replaceme, patch));
}
patch = patch->next;
}
return target;
}
static cJSON *merge_patch(cJSON *target, const cJSON * const patch, const cJSON_bool case_sensitive)
{
cJSON *patch_child = NULL;
if (!cJSON_IsObject(patch))
{
/* scalar value, array or NULL, just duplicate */
cJSON_Delete(target);
return cJSON_Duplicate(patch, 1);
}
if (!cJSON_IsObject(target))
{
cJSON_Delete(target);
target = cJSON_CreateObject();
}
patch_child = patch->child;
while (patch_child != NULL)
{
if (cJSON_IsNull(patch_child))
{
/* NULL is the indicator to remove a value, see RFC7396 */
if (case_sensitive)
{
cJSON_DeleteItemFromObjectCaseSensitive(target, patch_child->string);
}
else
{
cJSON_DeleteItemFromObject(target, patch_child->string);
}
}
else
{
cJSON *replace_me = NULL;
cJSON *replacement = NULL;
if (case_sensitive)
{
replace_me = cJSON_DetachItemFromObjectCaseSensitive(target, patch_child->string);
}
else
{
replace_me = cJSON_DetachItemFromObject(target, patch_child->string);
}
replacement = merge_patch(replace_me, patch_child, case_sensitive);
if (replacement == NULL)
{
return NULL;
}
cJSON_AddItemToObject(target, patch_child->string, replacement);
}
patch_child = patch_child->next;
}
return target;
}