/**
* Declare user-defined mapping between a URI and a namespace.
*/
static void
xfmt_prefix_declare(struct xfmt_pass2 *xp2, const char *uri, const char *prefix)
{
nv_pair_t *nv;
nv = nv_table_lookup(xp2->uri2prefix, uri);
if (nv != NULL) {
/*
* Silently ignore the mapping if we already have seen an identical one
* in the XML tree during the first pass.
*/
if (strcmp(prefix, nv_pair_value_str(nv)) != 0) {
g_carp("XFMT ignoring supplied prefix '%s' for '%s': "
"already saw '%s' in the tree", prefix, uri,
nv_pair_value_str(nv));
}
} else {
/*
* New mapping.
*/
nv = nv_pair_make_static_str(uri, prefix);
nv_table_insert_pair(xp2->uri2prefix, nv);
}
}
/**
* Record a tree-defined mapping between a prefix and a namespace URI.
*/
static void
xfmt_prefix_record(struct xfmt_pass1 *xp1, const char *prefix, const char *uri)
{
nv_pair_t *nv;
/*
* Our policy is to use one single prefix for a given namespace URI
* throughout the document. Although several prefixes could be used.
* this is confusing to read and serves no value: a human will be mislead
* into thinking the two namespaces are different because they carry
* distinct prefixes, and a machine will not care about the prefix value.
*/
nv = nv_table_lookup(xp1->uri2prefix, uri);
if (nv != NULL) {
/*
* Silently ignore the mapping if we already have seen an identical one
* in the XML tree.
*/
if (strcmp(prefix, nv_pair_value_str(nv)) != 0) {
g_carp("XFMT ignoring prefix '%s' for '%s': "
"already saw '%s' earlier in the tree", prefix, uri,
nv_pair_value_str(nv));
}
} else {
/*
* New mapping.
*/
nv = nv_pair_make_static_str(uri, prefix);
nv_table_insert_pair(xp1->uri2prefix, nv);
}
}
/**
* Successful SOAP RPC reply callback.
*
* @param sr the SOAP RPC request
* @param root XML tree of SOAP reply
* @param arg the UPnP control request
*/
static void
upnp_ctrl_soap_reply(const soap_rpc_t *sr, xnode_t *root, void *arg)
{
upnp_ctrl_t *ucd = arg;
xnode_t *xn;
nv_table_t *nvt;
void *reply;
size_t reply_len;
host_addr_t local_addr;
int code;
upnp_ctrl_check(ucd);
if (GNET_PROPERTY(upnp_debug) > 1) {
g_debug("UPNP got SOAP reply for %s", ucd->action);
if (GNET_PROPERTY(upnp_debug) > 2)
xfmt_tree_dump(root, stderr);
}
ucd->sr = NULL; /* Done with SOAP request */
if (soap_rpc_local_addr(sr, &local_addr))
upnp_set_local_addr(local_addr);
/*
* Decompile the returned values.
*
* <u:actionResponse xmlns:u="urn:schemas-upnp-org:service:serviceType:v">
* <arg1>out value1</arg1>
* <arg2>out value2</arg2>
* : : : :
* <argn>out valuen</argn>
* </u:actionResponse>
*
* Values are inserted in name / value pairs: "arg1" -> "out value 1" and
* given to the launch callback for extracting and decompiling the values.
*/
nvt = nv_table_make(TRUE);
for (xn = xnode_first_child(root); xn; xn = xnode_next_sibling(xn)) {
nv_pair_t *nv;
xnode_t *xt;
if (!xnode_is_element(xn)) {
if (GNET_PROPERTY(upnp_debug)) {
g_warning("UPNP \"%s\" skipping XML node %s",
ucd->action, xnode_to_string(xn));
}
continue;
}
xt = xnode_first_child(xn);
if (NULL == xt || !xnode_is_text(xt)) {
if (GNET_PROPERTY(upnp_debug)) {
g_warning("UPNP \"%s\" bad child node %s in %s",
ucd->action, xnode_to_string(xt), xnode_to_string2(xn));
}
} else {
/*
* Name/value strings point in the tree, which is going to be
* alive for the duration of the processing, so we can use the
* strings without copying them.
*/
nv = nv_pair_make_static_str(
xnode_element_name(xn), xnode_text(xt));
nv_table_insert_pair(nvt, nv);
if (xnode_next_sibling(xt) != NULL) {
if (GNET_PROPERTY(upnp_debug)) {
g_warning("UPNP \"%s\" content of %s is not pure text",
ucd->action, xnode_to_string(xt));
}
}
}
}
/*
* Attempt to decompile the replied values, if any are expected.
*
* Allocated data is done via walloc(), and the returned structure is flat.
* It will be freed after invoking the user callback.
*/
if (ucd->lcb != NULL) {
reply = (*ucd->lcb)(nvt, &reply_len);
code = NULL == reply ? UPNP_ERR_OK : UPNP_ERR_BAD_REPLY;
} else {
code = UPNP_ERR_OK;
reply = NULL;
reply_len = 0;
}
/*
* Let UPnP control invoker know about the result of the query.
*/
(*ucd->cb)(code, reply, reply_len, ucd->cb_arg);
/*
* Done, final cleanup.
*/
WFREE_NULL(reply, reply_len);
nv_table_free(nvt);
upnp_ctrl_free(ucd);
}
