Improve idmap2 xml parsing
To parse the <overlay> tags for internal overlay references, we require
the ability to parse XML. The current implementation only allows idmap2
to find a tag somewhere in an xml file.
This implementation allows for the retrieval of an iterator that
iterates over direct children xml elements. Now we can enforce that the
<overlay> tag in the manifest is nested within the <manifest> tag and we
can ensure <item> tags are within the <overlay> tags of the overlay
resource configuration xml.
Bug: 135051420
Bug: 135943783
Test: idmap2_tests
Change-Id: I12f965b55c18960af6cf9dc6ca46429f53124c9a
diff --git a/cmds/idmap2/libidmap2/ResourceUtils.cpp b/cmds/idmap2/libidmap2/ResourceUtils.cpp
index dce83e3..d9c97e1 100644
--- a/cmds/idmap2/libidmap2/ResourceUtils.cpp
+++ b/cmds/idmap2/libidmap2/ResourceUtils.cpp
@@ -22,18 +22,18 @@
#include "androidfw/StringPiece.h"
#include "androidfw/Util.h"
#include "idmap2/Result.h"
-#include "idmap2/Xml.h"
+#include "idmap2/XmlParser.h"
#include "idmap2/ZipFile.h"
using android::StringPiece16;
using android::idmap2::Result;
-using android::idmap2::Xml;
+using android::idmap2::XmlParser;
using android::idmap2::ZipFile;
using android::util::Utf16ToUtf8;
namespace android::idmap2::utils {
-Result<std::string> ResToTypeEntryName(const AssetManager2& am, ResourceId resid) {
+Result<std::string> ResToTypeEntryName(const AssetManager2& am, uint32_t resid) {
AssetManager2::ResourceName name;
if (!am.GetResourceName(resid, &name)) {
return Error("no resource 0x%08x in asset manager", resid);
@@ -65,42 +65,55 @@
return Error("failed to uncompress AndroidManifest.xml from %s", path.c_str());
}
- std::unique_ptr<const Xml> xml = Xml::Create(entry->buf, entry->size);
+ Result<std::unique_ptr<const XmlParser>> xml = XmlParser::Create(entry->buf, entry->size);
if (!xml) {
return Error("failed to parse AndroidManifest.xml from %s", path.c_str());
}
+ auto manifest_it = (*xml)->tree_iterator();
+ if (manifest_it->event() != XmlParser::Event::START_TAG || manifest_it->name() != "manifest") {
+ return Error("root element tag is not <manifest> in AndroidManifest.xml of %s", path.c_str());
+ }
+
+ auto overlay_it = std::find_if(manifest_it.begin(), manifest_it.end(), [](const auto& it) {
+ return it.event() == XmlParser::Event::START_TAG && it.name() == "overlay";
+ });
+
OverlayManifestInfo info{};
- const auto tag = xml->FindTag("overlay");
- if (!tag) {
- if (assert_overlay) {
- return Error("<overlay> missing from AndroidManifest.xml of %s", path.c_str());
+ if (overlay_it == manifest_it.end()) {
+ if (!assert_overlay) {
+ return info;
}
- return info;
+ return Error("<overlay> missing from AndroidManifest.xml of %s", path.c_str());
}
- auto iter = tag->find("targetPackage");
- if (iter == tag->end()) {
- if (assert_overlay) {
- return Error("android:targetPackage missing from <overlay> of %s", path.c_str());
- }
+ if (auto result_str = overlay_it->GetAttributeStringValue("targetPackage")) {
+ info.target_package = *result_str;
} else {
- info.target_package = iter->second;
+ return Error("android:targetPackage missing from <overlay> of %s: %s", path.c_str(),
+ result_str.GetErrorMessage().c_str());
}
- iter = tag->find("targetName");
- if (iter != tag->end()) {
- info.target_name = iter->second;
+ if (auto result_str = overlay_it->GetAttributeStringValue("targetName")) {
+ info.target_name = *result_str;
}
- iter = tag->find("isStatic");
- if (iter != tag->end()) {
- info.is_static = std::stoul(iter->second) != 0U;
+ if (auto result_value = overlay_it->GetAttributeValue("isStatic")) {
+ if ((*result_value).dataType >= Res_value::TYPE_FIRST_INT &&
+ (*result_value).dataType <= Res_value::TYPE_LAST_INT) {
+ info.is_static = (*result_value).data != 0U;
+ } else {
+ return Error("android:isStatic is not a boolean in AndroidManifest.xml of %s", path.c_str());
+ }
}
- iter = tag->find("priority");
- if (iter != tag->end()) {
- info.priority = std::stoi(iter->second);
+ if (auto result_value = overlay_it->GetAttributeValue("priority")) {
+ if ((*result_value).dataType >= Res_value::TYPE_FIRST_INT &&
+ (*result_value).dataType <= Res_value::TYPE_LAST_INT) {
+ info.priority = (*result_value).data;
+ } else {
+ return Error("android:priority is not an integer in AndroidManifest.xml of %s", path.c_str());
+ }
}
iter = tag->find("requiredSystemPropertyName");