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First import of XML-RPC protocol support for newer versions of Xend. I've not
put it in the Makefiles yet as it's not actually being used by anything. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori
parent
72b838fffc
commit
cda69700a0
608
src/xmlrpc.c
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608
src/xmlrpc.c
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@ -0,0 +1,608 @@
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/*
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* xmlrpc.c: XML-RPC protocol handler for libvir library
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*
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* Copyright (C) 2006 IBM, Corp.
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*
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* See COPYING.LIB for the License of this software
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*
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* Anthony Liguori <aliguori@us.ibm.com>
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*/
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#include "xmlrpc.h"
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#include <libxml/nanohttp.h>
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#include <string.h>
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#include <errno.h>
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/* TODO
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1) Lots of error checking
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2) xmlRpcValueToSexpr
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*/
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#define TODO do { } while (0)
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static xmlNodePtr xmlFirstElement(xmlNodePtr node);
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static xmlNodePtr xmlNextElement(xmlNodePtr node);
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struct _xmlRpcContext
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{
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char *uri;
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int faultCode;
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char *faultMessage;
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};
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static xmlRpcValuePtr xmlRpcValueNew(xmlRpcValueType type)
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{
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xmlRpcValuePtr ret = malloc(sizeof(*ret));
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if (ret)
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ret->kind = type;
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return ret;
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}
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static char *xmlGetText(xmlNodePtr node)
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{
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for (node = node->children; node; node = node->next)
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if (node->type == XML_TEXT_NODE)
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return strdup((const char *)node->content);
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return NULL;
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}
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static xmlNodePtr xmlFirstElement(xmlNodePtr node)
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{
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for (node = node->children; node; node = node->next)
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if (node->type == XML_ELEMENT_NODE)
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break;
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return node;
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}
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static xmlNodePtr xmlNextElement(xmlNodePtr node)
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{
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for (node = node->next; node; node = node->next)
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if (node->type == XML_ELEMENT_NODE)
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break;
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return node;
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}
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static xmlRpcValuePtr xmlRpcValueUnmarshalDateTime(xmlNodePtr node)
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{
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/* we don't need this */
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TODO;
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return NULL;
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}
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static xmlRpcValuePtr xmlRpcValueUnmarshalString(xmlNodePtr node)
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{
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xmlRpcValuePtr ret = xmlRpcValueNew(XML_RPC_STRING);
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ret->value.string = xmlGetText(node);
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return ret;
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}
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static xmlRpcValuePtr xmlRpcValueUnmarshalBase64(xmlNodePtr node)
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{
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/* we don't need this */
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TODO;
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return NULL;
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}
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static xmlRpcValuePtr xmlRpcValueUnmarshalInteger(xmlNodePtr node)
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{
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xmlRpcValuePtr ret = xmlRpcValueNew(XML_RPC_INTEGER);
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char *value = xmlGetText(node);
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ret->value.integer = atoi(value);
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free(value);
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return ret;
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}
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static xmlRpcValuePtr xmlRpcValueUnmarshalBoolean(xmlNodePtr node)
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{
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xmlRpcValuePtr ret = xmlRpcValueNew(XML_RPC_BOOLEAN);
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char *value = xmlGetText(node);
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if (atoi(value))
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ret->value.boolean = true;
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else
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ret->value.boolean = false;
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free(value);
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return ret;
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}
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static xmlRpcValuePtr xmlRpcValueUnmarshalDouble(xmlNodePtr node)
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{
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xmlRpcValuePtr ret = xmlRpcValueNew(XML_RPC_DOUBLE);
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char *value = xmlGetText(node);
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ret->value.real = atof(value);
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free(value);
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return ret;
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}
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static xmlRpcValuePtr xmlRpcValueUnmarshalArray(xmlNodePtr node)
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{
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xmlRpcValuePtr ret = xmlRpcValueNew(XML_RPC_ARRAY);
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xmlNodePtr cur;
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int n_elements = 0;
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for (cur = xmlFirstElement(node); cur; cur = xmlNextElement(cur))
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n_elements += 1;
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ret->value.array.elements = malloc(n_elements * sizeof(xmlRpcValue));
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n_elements = 0;
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for (cur = xmlFirstElement(node); cur; cur = xmlNextElement(cur)) {
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ret->value.array.elements[n_elements] = xmlRpcValueUnmarshal(cur);
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n_elements += 1;
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}
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ret->value.array.n_elements = n_elements;
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return ret;
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}
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static xmlRpcValueDictElementPtr xmlRpcValueUnmarshalDictElement(xmlNodePtr node)
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{
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xmlRpcValueDictElementPtr ret = malloc(sizeof(*ret));
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xmlNodePtr cur;
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memset(ret, 0, sizeof(*ret));
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for (cur = xmlFirstElement(node); cur; cur = xmlNextElement(cur)) {
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if (xmlStrEqual(cur->name, BAD_CAST "name")) {
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ret->name = xmlGetText(cur);
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} else if (xmlStrEqual(cur->name, BAD_CAST "value")) {
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ret->value = xmlRpcValueUnmarshal(cur);
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} else {
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/* What? */
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}
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}
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ret->next = NULL;
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return ret;
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}
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static xmlRpcValuePtr xmlRpcValueUnmarshalDict(xmlNodePtr node)
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{
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xmlRpcValueDictElementPtr root = NULL, *elem = &root;
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xmlRpcValuePtr ret = xmlRpcValueNew(XML_RPC_STRUCT);
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xmlNodePtr cur;
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for (cur = xmlFirstElement(node); cur; cur = xmlNextElement(cur)) {
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*elem = xmlRpcValueUnmarshalDictElement(cur);
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elem = &(*elem)->next;
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}
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ret->value.dict.root = root;
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return ret;
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}
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xmlRpcValuePtr xmlRpcValueUnmarshal(xmlNodePtr node)
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{
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xmlNodePtr n;
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xmlRpcValuePtr ret;
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if (xmlStrEqual(node->name, BAD_CAST "value")) {
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n = xmlFirstElement(node);
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if (n == NULL) {
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ret = xmlRpcValueUnmarshalString(node);
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} else {
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ret = xmlRpcValueUnmarshal(n);
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}
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} else if (xmlStrEqual(node->name, BAD_CAST "dateTime.iso8601")) {
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ret = xmlRpcValueUnmarshalDateTime(node);
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} else if (xmlStrEqual(node->name, BAD_CAST "string")) {
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ret = xmlRpcValueUnmarshalString(node);
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} else if (xmlStrEqual(node->name, BAD_CAST "base64")) {
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ret = xmlRpcValueUnmarshalBase64(node);
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} else if (xmlStrEqual(node->name, BAD_CAST "i4") ||
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xmlStrEqual(node->name, BAD_CAST "int")) {
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ret = xmlRpcValueUnmarshalInteger(node);
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} else if (xmlStrEqual(node->name, BAD_CAST "boolean")) {
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ret = xmlRpcValueUnmarshalBoolean(node);
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} else if (xmlStrEqual(node->name, BAD_CAST "double")) {
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ret = xmlRpcValueUnmarshalDouble(node);
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} else if (xmlStrEqual(node->name, BAD_CAST "array")) {
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ret = xmlRpcValueUnmarshal(xmlFirstElement(node));
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} else if (xmlStrEqual(node->name, BAD_CAST "data")) {
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ret = xmlRpcValueUnmarshalArray(node);
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} else if (xmlStrEqual(node->name, BAD_CAST "struct")) {
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ret = xmlRpcValueUnmarshalDict(node);
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} else if (xmlStrEqual(node->name, BAD_CAST "nil")) {
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ret = xmlRpcValueNew(XML_RPC_NIL);
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} else {
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/* bug */
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}
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return ret;
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}
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void xmlRpcValueFree(xmlRpcValuePtr value)
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{
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int i;
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xmlRpcValueDictElementPtr cur, next;
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if (value == NULL)
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return;
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switch (value->kind) {
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case XML_RPC_ARRAY:
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for (i = 0; i < value->value.array.n_elements; i++)
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xmlRpcValueFree(value->value.array.elements[i]);
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free(value->value.array.elements);
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break;
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case XML_RPC_STRUCT:
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next = value->value.dict.root;
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while (next) {
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cur = next;
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next = next->next;
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free(cur->name);
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xmlRpcValueFree(cur->value);
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free(cur);
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}
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break;
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case XML_RPC_STRING:
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free(value->value.string);
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break;
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default:
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break;
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}
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free(value);
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}
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void xmlRpcValueMarshal(xmlRpcValuePtr value, virBufferPtr buf, int indent)
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{
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int i;
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xmlRpcValueDictElement *elem;
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virBufferVSprintf(buf, "%*s<value>", indent, "");
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switch (value->kind) {
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case XML_RPC_ARRAY:
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virBufferVSprintf(buf, "<array><data>\n", indent, "");
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for (i = 0; i < value->value.array.n_elements; i++)
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xmlRpcValueMarshal(value->value.array.elements[i], buf, indent+2);
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virBufferVSprintf(buf, "%*s</data></array>", indent, "");
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break;
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case XML_RPC_STRUCT:
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virBufferVSprintf(buf, "<struct>\n", indent, "");
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indent += 2;
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for (elem = value->value.dict.root; elem; elem = elem->next) {
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virBufferVSprintf(buf, "%*s<member>\n", indent, "");
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virBufferVSprintf(buf, "%*s<name>%s</name>\n",
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indent + 2, "", elem->name);
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xmlRpcValueMarshal(elem->value, buf, indent + 2);
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virBufferVSprintf(buf, "%*s</member>\n", indent, "");
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}
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indent -= 2;
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virBufferVSprintf(buf, "%*s</struct>", indent, "");
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break;
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case XML_RPC_INTEGER:
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virBufferVSprintf(buf, "<int>%d</int>", value->value.integer);
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break;
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case XML_RPC_DOUBLE:
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virBufferVSprintf(buf, "<double>%f</double>", value->value.real);
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break;
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case XML_RPC_BOOLEAN:
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if (value->value.boolean)
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i = 1;
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else
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i = 0;
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virBufferVSprintf(buf, "<boolean>%d</boolean>", i);
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break;
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case XML_RPC_DATE_TIME:
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/* FIXME */
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TODO;
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break;
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case XML_RPC_BASE64:
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/* FIXME */
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TODO;
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break;
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case XML_RPC_STRING:
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virBufferVSprintf(buf, "<string>%s</string>", value->value.string);
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break;
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case XML_RPC_NIL:
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virBufferVSprintf(buf, "<nil> </nil>");
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break;
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}
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virBufferVSprintf(buf, "</value>\n");
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}
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virBufferPtr xmlRpcMarshalRequest(const char *request,
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int argc, xmlRpcValuePtr *argv)
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{
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virBufferPtr buf;
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int i;
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buf = malloc(sizeof(*buf));
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buf->size = 1024;
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buf->content = malloc(buf->size);
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buf->use = 0;
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virBufferVSprintf(buf,
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"<?xml version=\"1.0\"?>\n"
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"<methodCall>\n"
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" <methodName>%s</methodName>\n"
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" <params>\n",
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request);
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for (i = 0; i < argc; i++) {
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virBufferVSprintf(buf,
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" <param>\n");
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xmlRpcValueMarshal(argv[i], buf, 6);
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virBufferVSprintf(buf,
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" </param>\n");
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}
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virBufferVSprintf(buf,
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" </params>\n"
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"</methodCall>\n");
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return buf;
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}
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xmlRpcValuePtr xmlRpcUnmarshalResponse(xmlNodePtr node, bool *is_fault)
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{
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if (!xmlStrEqual(node->name, BAD_CAST "methodResponse"))
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return NULL;
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node = xmlFirstElement(node);
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if (xmlStrEqual(node->name, BAD_CAST "params")) {
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node = xmlFirstElement(node);
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if (!xmlStrEqual(node->name, BAD_CAST "param"))
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return NULL;
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*is_fault = false;
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return xmlRpcValueUnmarshal(xmlFirstElement(node));
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} else if (xmlStrEqual(node->name, BAD_CAST "fault")) {
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*is_fault = true;
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return xmlRpcValueUnmarshal(xmlFirstElement(node));
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} else
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return NULL;
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|
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}
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static char *xmlRpcCallRaw(const char *url, const char *request)
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{
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void *cxt;
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char *contentType = "text/xml";
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int len, ret, serrno;
|
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char *response = NULL;
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|
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cxt = xmlNanoHTTPMethod(url,
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"POST",
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request,
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&contentType,
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NULL,
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strlen(request));
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|
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if (cxt == NULL)
|
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goto error;
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|
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if (contentType && strcmp(contentType, "text/xml") != 0) {
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errno = EINVAL;
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goto error;
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}
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len = xmlNanoHTTPContentLength(cxt);
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response = malloc(len + 1);
|
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if (response == NULL)
|
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goto error;
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|
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ret = xmlNanoHTTPRead(cxt, response, len);
|
||||
if (ret != len) {
|
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errno = EINVAL;
|
||||
free(response);
|
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response = NULL;
|
||||
}
|
||||
|
||||
response[len] = 0;
|
||||
|
||||
error:
|
||||
serrno = errno;
|
||||
if (cxt) {
|
||||
xmlNanoHTTPClose(cxt);
|
||||
free(contentType);
|
||||
}
|
||||
errno = serrno;
|
||||
|
||||
return response;
|
||||
}
|
||||
|
||||
static char **xmlRpcStringArray(xmlRpcValuePtr value)
|
||||
{
|
||||
char **ret, *ptr;
|
||||
int i;
|
||||
size_t size = 0;
|
||||
|
||||
if (value->kind != XML_RPC_ARRAY)
|
||||
return NULL;
|
||||
|
||||
size = sizeof(char *) * (value->value.array.n_elements + 1);
|
||||
|
||||
for (i = 0; i < value->value.array.n_elements; i++)
|
||||
if (value->value.array.elements[i]->kind == XML_RPC_STRING)
|
||||
size += strlen(value->value.array.elements[i]->value.string) + 1;
|
||||
|
||||
ptr = malloc(size);
|
||||
|
||||
ret = (char **)ptr;
|
||||
ptr += sizeof(char *) * (value->value.array.n_elements + 1);
|
||||
|
||||
for (i = 0; i < value->value.array.n_elements; i++) {
|
||||
if (value->value.array.elements[i]->kind == XML_RPC_STRING) {
|
||||
char *s = value->value.array.elements[i]->value.string;
|
||||
strcpy(ptr, s);
|
||||
ret[i] = ptr;
|
||||
ptr += strlen(s) + 1;
|
||||
} else
|
||||
ret[i] = "";
|
||||
}
|
||||
|
||||
ret[i] = NULL;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int xmlRpcCall(xmlRpcContextPtr context, const char *method,
|
||||
const char *retfmt, const char *fmt, ...)
|
||||
{
|
||||
va_list ap;
|
||||
const char *ptr;
|
||||
int argc;
|
||||
xmlRpcValuePtr *argv;
|
||||
virBufferPtr buf;
|
||||
int i;
|
||||
char *ret;
|
||||
xmlDocPtr xml;
|
||||
xmlNodePtr node;
|
||||
bool fault;
|
||||
xmlRpcValuePtr value;
|
||||
void *retval;
|
||||
|
||||
argc = strlen(fmt);
|
||||
argv = malloc(sizeof(*argv) * argc);
|
||||
|
||||
va_start(ap, fmt);
|
||||
|
||||
if (retfmt && *retfmt)
|
||||
retval = va_arg(ap, void *);
|
||||
|
||||
i = 0;
|
||||
for (ptr = fmt; *ptr; ptr++) {
|
||||
switch (*ptr) {
|
||||
case 'i':
|
||||
argv[i] = xmlRpcValueNew(XML_RPC_INTEGER);
|
||||
argv[i]->value.integer = va_arg(ap, int32_t);
|
||||
break;
|
||||
case 'f':
|
||||
argv[i] = xmlRpcValueNew(XML_RPC_DOUBLE);
|
||||
argv[i]->value.real = va_arg(ap, double);
|
||||
break;
|
||||
case 'b':
|
||||
argv[i] = xmlRpcValueNew(XML_RPC_BOOLEAN);
|
||||
argv[i]->value.boolean = va_arg(ap, int);
|
||||
break;
|
||||
case 's':
|
||||
argv[i] = xmlRpcValueNew(XML_RPC_STRING);
|
||||
argv[i]->value.string = strdup(va_arg(ap, const char *));
|
||||
break;
|
||||
default:
|
||||
return -1;
|
||||
}
|
||||
i++;
|
||||
}
|
||||
va_end(ap);
|
||||
|
||||
buf = xmlRpcMarshalRequest(method, argc, argv);
|
||||
|
||||
for (i = 0; i < argc; i++)
|
||||
xmlRpcValueFree(argv[i]);
|
||||
|
||||
free(argv);
|
||||
|
||||
ret = xmlRpcCallRaw(context->uri, buf->content);
|
||||
|
||||
free(buf->content);
|
||||
free(buf);
|
||||
|
||||
xml = xmlReadDoc((const xmlChar *)ret, "response.xml", NULL,
|
||||
XML_PARSE_NOENT | XML_PARSE_NONET |
|
||||
XML_PARSE_NOERROR | XML_PARSE_NOWARNING);
|
||||
free(ret);
|
||||
|
||||
if (xml == NULL) {
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
node = xmlDocGetRootElement(xml);
|
||||
|
||||
value = xmlRpcUnmarshalResponse(node, &fault);
|
||||
|
||||
if (!fault) {
|
||||
switch (*retfmt) {
|
||||
case 'i':
|
||||
if (value->kind == XML_RPC_INTEGER)
|
||||
*(int32_t *)retval = value->value.integer;
|
||||
break;
|
||||
case 'b':
|
||||
if (value->kind == XML_RPC_BOOLEAN)
|
||||
*(bool *)retval = value->value.boolean;
|
||||
break;
|
||||
case 'f':
|
||||
if (value->kind == XML_RPC_DOUBLE)
|
||||
*(double *)retval = value->value.real;
|
||||
break;
|
||||
case 's':
|
||||
if (value->kind == XML_RPC_STRING)
|
||||
*(char **)retval = strdup(value->value.string);
|
||||
break;
|
||||
case 'S':
|
||||
*(char ***)retval = xmlRpcStringArray(value);
|
||||
break;
|
||||
case 'V':
|
||||
*(xmlRpcValuePtr *)retval = value;
|
||||
value = NULL;
|
||||
break;
|
||||
default:
|
||||
printf("not supported yet\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
xmlFreeDoc(xml);
|
||||
|
||||
if (fault) { /* FIXME we need generic dict routines */
|
||||
context->faultCode = value->value.dict.root->value->value.integer;
|
||||
context->faultMessage = strdup(value->value.dict.root->next->value->value.string);
|
||||
xmlRpcValueFree(value);
|
||||
errno = EFAULT;
|
||||
return -1;
|
||||
}
|
||||
|
||||
xmlRpcValueFree(value);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
xmlRpcContextPtr xmlRpcContextNew(const char *uri)
|
||||
{
|
||||
xmlRpcContextPtr ret = malloc(sizeof(*ret));
|
||||
|
||||
if (ret) {
|
||||
ret->uri = strdup(uri);
|
||||
ret->faultMessage = NULL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void xmlRpcContextFree(xmlRpcContextPtr context)
|
||||
{
|
||||
if (context) {
|
||||
if (context->uri)
|
||||
free(context->uri);
|
||||
|
||||
if (context->faultMessage)
|
||||
free(context->faultMessage);
|
||||
|
||||
free(context);
|
||||
}
|
||||
}
|
||||
|
||||
int xmlRpcContextFaultCode(xmlRpcContextPtr context)
|
||||
{
|
||||
return context->faultCode;
|
||||
}
|
||||
|
||||
const char *xmlRpcContextFaultMessage(xmlRpcContextPtr context)
|
||||
{
|
||||
return context->faultMessage;
|
||||
}
|
||||
110
src/xmlrpc.h
Normal file
110
src/xmlrpc.h
Normal file
|
|
@ -0,0 +1,110 @@
|
|||
/*
|
||||
* xmlrpc.c: XML-RPC protocol handler for libvir library
|
||||
*
|
||||
* Copyright (C) 2006 IBM, Corp.
|
||||
*
|
||||
* See COPYING.LIB for the License of this software
|
||||
*
|
||||
* Anthony Liguori <aliguori@us.ibm.com>
|
||||
*/
|
||||
|
||||
#ifndef _VIR_XML_RPC_H_
|
||||
#define _VIR_XML_RPC_H_
|
||||
|
||||
#include <libxml/parser.h>
|
||||
#include <libxml/tree.h>
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
#include <time.h>
|
||||
|
||||
#include "xml.h"
|
||||
|
||||
typedef enum _xmlRpcValueType xmlRpcValueType;
|
||||
|
||||
typedef struct _xmlRpcValueArray xmlRpcValueArray;
|
||||
typedef struct _xmlRpcValueDictElement xmlRpcValueDictElement;
|
||||
typedef struct _xmlRpcValueDict xmlRpcValueDict;
|
||||
typedef struct _xmlRpcValueBase64 xmlRpcValueBase64;
|
||||
typedef struct _xmlRpcValue xmlRpcValue;
|
||||
typedef struct _xmlRpcContext xmlRpcContext;
|
||||
|
||||
typedef xmlRpcValueArray *xmlRpcValueArrayPtr;
|
||||
typedef xmlRpcValueDictElement *xmlRpcValueDictElementPtr;
|
||||
typedef xmlRpcValueDict *xmlRpcValueDictPtr;
|
||||
typedef xmlRpcValueBase64 *xmlRpcValueBase64Ptr;
|
||||
typedef xmlRpcValue *xmlRpcValuePtr;
|
||||
typedef xmlRpcContext *xmlRpcContextPtr;
|
||||
|
||||
enum _xmlRpcValueType {
|
||||
XML_RPC_ARRAY,
|
||||
XML_RPC_STRUCT,
|
||||
XML_RPC_INTEGER,
|
||||
XML_RPC_DOUBLE,
|
||||
XML_RPC_BOOLEAN,
|
||||
XML_RPC_DATE_TIME,
|
||||
XML_RPC_BASE64,
|
||||
XML_RPC_STRING,
|
||||
XML_RPC_NIL,
|
||||
};
|
||||
|
||||
struct _xmlRpcValueArray {
|
||||
int n_elements;
|
||||
xmlRpcValuePtr *elements;
|
||||
};
|
||||
|
||||
struct _xmlRpcValueDictElement {
|
||||
char *name;
|
||||
xmlRpcValuePtr value;
|
||||
xmlRpcValueDictElementPtr next;
|
||||
};
|
||||
|
||||
struct _xmlRpcValueDict {
|
||||
xmlRpcValueDictElementPtr root;
|
||||
};
|
||||
|
||||
struct _xmlRpcValueBase64 {
|
||||
void *data;
|
||||
size_t n_data;
|
||||
};
|
||||
|
||||
struct _xmlRpcValue {
|
||||
xmlRpcValueType kind;
|
||||
|
||||
union {
|
||||
char *string;
|
||||
xmlRpcValueArray array;
|
||||
xmlRpcValueDict dict;
|
||||
int32_t integer;
|
||||
double real;
|
||||
bool boolean;
|
||||
time_t dateTime;
|
||||
xmlRpcValueBase64 base64;
|
||||
} value;
|
||||
};
|
||||
|
||||
struct _xmlRpcContext;
|
||||
|
||||
virBufferPtr xmlRpcMarshalRequest(const char *request,
|
||||
int argc, xmlRpcValuePtr *argv);
|
||||
|
||||
xmlRpcValuePtr xmlRpcUnmarshalResponse(xmlNodePtr node, bool *is_fault);
|
||||
|
||||
void xmlRpcValueMarshal(xmlRpcValuePtr value, virBufferPtr buf, int indent);
|
||||
|
||||
xmlRpcValuePtr xmlRpcValueUnmarshal(xmlNodePtr node);
|
||||
|
||||
void xmlRpcValueFree(xmlRpcValuePtr value);
|
||||
|
||||
int xmlRpcCall(xmlRpcContextPtr context, const char *method,
|
||||
const char *retval, const char *fmt, ...);
|
||||
|
||||
xmlRpcContextPtr xmlRpcContextNew(const char *uri);
|
||||
|
||||
void xmlRpcContextFree(xmlRpcContextPtr context);
|
||||
|
||||
int xmlRpcContextFaultCode(xmlRpcContextPtr context);
|
||||
|
||||
const char *xmlRpcContextFaultMessage(xmlRpcContextPtr context);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user