static double xpath_get_double(xmlXPathContextPtr ctx, const char *xpath)
{
char *str;
char *endptr;
double ret;
str = xpath_get_str(ctx, xpath);
if (str == NULL) {
return 0;
}
ret = g_ascii_strtod(str, &endptr);
g_assert(*str != 0 && *endptr == 0);
g_free(str);
return ret;
}
/* Returns 0 if the node is not found. */
static uint64_t xpath_get_uint(xmlXPathContextPtr ctx, const char *xpath)
{
char *str;
char *endptr;
uint64_t ret;
str = xpath_get_str(ctx, xpath);
if (str == NULL) {
return 0;
}
ret = g_ascii_strtoull(str, &endptr, 10);
/* Assert if invalid number, since schema validation should have caught
this */
g_assert(*str != 0 && *endptr == 0);
g_free(str);
return ret;
}
static bool image_add(GHashTable *images, xmlDocPtr args,
xmlNodePtr image_args, GError **err)
{
struct vmnetfs_image *img;
xmlXPathContextPtr ctx;
xmlXPathObjectPtr obj;
xmlChar *content;
int i;
ctx = make_xpath_context(args);
ctx->node = image_args;
img = g_slice_new0(struct vmnetfs_image);
img->url = xpath_get_str(ctx, "v:origin/v:url/text()");
img->username = xpath_get_str(ctx,
"v:origin/v:credentials/v:username/text()");
img->password = xpath_get_str(ctx,
"v:origin/v:credentials/v:password/text()");
img->read_base = xpath_get_str(ctx, "v:cache/v:path/text()");
img->fetch_offset = xpath_get_uint(ctx, "v:origin/v:offset/text()");
img->initial_size = xpath_get_uint(ctx, "v:size/text()");
img->chunk_size = xpath_get_uint(ctx, "v:cache/v:chunk-size/text()");
img->etag = xpath_get_str(ctx, "v:origin/v:validators/v:etag/text()");
img->last_modified = xpath_get_uint(ctx,
"v:origin/v:validators/v:last-modified/text()");
obj = xmlXPathEval(BAD_CAST "v:origin/v:cookies/v:cookie/text()", ctx);
for (i = 0; obj && obj->nodesetval && i < obj->nodesetval->nodeNr; i++) {
content = xmlNodeGetContent(obj->nodesetval->nodeTab[i]);
img->cookies = g_list_prepend(img->cookies,
g_strdup((const char *) content));
xmlFree(content);
}
xmlXPathFreeObject(obj);
img->io_stream = _vmnetfs_stream_group_new(NULL, NULL);
img->bytes_read = _vmnetfs_stat_new();
img->bytes_written = _vmnetfs_stat_new();
img->chunk_fetches = _vmnetfs_stat_new();
img->chunk_dirties = _vmnetfs_stat_new();
img->io_errors = _vmnetfs_stat_new();
if (!_vmnetfs_io_init(img, err)) {
_image_free(img);
xmlXPathFreeContext(ctx);
return false;
}
g_hash_table_insert(images, xpath_get_str(ctx, "v:name/text()"), img);
xmlXPathFreeContext(ctx);
return true;
}