/** Create a stanza object in reply to another.
* This function makes a copy of a stanza object with the attribute “to” set
* its original “from”.
* The stanza will have a reference count of one, so the caller does not
* need to clone it.
*
* @param stanza a Strophe stanza object
*
* @return a new Strophe stanza object
*
* @ingroup Stanza
*/
xmpp_stanza_t *xmpp_stanza_reply(xmpp_stanza_t * const stanza)
{
xmpp_stanza_t *copy = NULL;
const char *from;
int rc;
from = xmpp_stanza_get_from(stanza);
if (!from) goto copy_error;
copy = xmpp_stanza_new(stanza->ctx);
if (!copy) goto copy_error;
copy->type = stanza->type;
if (stanza->data) {
copy->data = xmpp_strdup(stanza->ctx, stanza->data);
if (!copy->data) goto copy_error;
}
if (stanza->attributes) {
if (_stanza_copy_attributes(copy, stanza) < 0)
goto copy_error;
}
xmpp_stanza_del_attribute(copy, "to");
xmpp_stanza_del_attribute(copy, "from");
rc = xmpp_stanza_set_to(copy, from);
if (rc != XMPP_EOK) goto copy_error;
return copy;
copy_error:
if (copy) xmpp_stanza_release(copy);
return NULL;
}
/** Create a stanza object in reply to another.
* This function makes a copy of a stanza object with the attribute “to” set
* its original “from”.
* The stanza will have a reference count of one, so the caller does not
* need to clone it.
*
* @param stanza a Strophe stanza object
*
* @return a new Strophe stanza object
*
* @ingroup Stanza
*/
xmpp_stanza_t *xmpp_stanza_reply(xmpp_stanza_t * const stanza)
{
xmpp_stanza_t *copy;
copy = xmpp_stanza_new(stanza->ctx);
if (!copy) goto copy_error;
copy->type = stanza->type;
if (stanza->data) {
copy->data = xmpp_strdup(stanza->ctx, stanza->data);
if (!copy->data) goto copy_error;
}
if (stanza->attributes) {
if (_stanza_copy_attributes(copy, stanza) == -1)
goto copy_error;
}
xmpp_stanza_set_to(copy, xmpp_stanza_get_from(stanza));
xmpp_stanza_del_attribute(copy, "from");
return copy;
copy_error:
if (copy) xmpp_stanza_release(copy);
return NULL;
}
/** Copy a stanza and its children.
* This function copies a stanza along with all its children and returns
* the new stanza and children with a reference count of 1. The returned
* stanza will have no parent and no siblings. This function is useful
* for extracting a child stanza for inclusion in another tree.
*
* @param stanza a Strophe stanza object
*
* @return a new Strophe stanza object
*
* @ingroup Stanza
*/
xmpp_stanza_t *xmpp_stanza_copy(const xmpp_stanza_t * const stanza)
{
xmpp_stanza_t *copy, *child, *copychild, *tail;
copy = xmpp_stanza_new(stanza->ctx);
if (!copy) goto copy_error;
copy->type = stanza->type;
if (stanza->data) {
copy->data = xmpp_strdup(stanza->ctx, stanza->data);
if (!copy->data) goto copy_error;
}
if (stanza->attributes) {
if (_stanza_copy_attributes(copy, stanza) == -1)
goto copy_error;
}
tail = copy->children;
for (child = stanza->children; child; child = child->next) {
copychild = xmpp_stanza_copy(child);
if (!copychild) goto copy_error;
copychild->parent = copy;
if (tail) {
copychild->prev = tail;
tail->next = copychild;
} else
copy->children = copychild;
tail = copychild;
}
return copy;
copy_error:
/* release all the hitherto allocated memory */
if (copy) xmpp_stanza_release(copy);
return NULL;
}