frameworks/base: move idmap from frameworks/native
idmap depends on libandroidfw, so it should go in frameworks/base.
Change-Id: I3c1db3baa355f53d6b523d60f4377e63eff00c30
diff --git a/cmds/idmap/inspect.cpp b/cmds/idmap/inspect.cpp
new file mode 100644
index 0000000..a59f5d3
--- /dev/null
+++ b/cmds/idmap/inspect.cpp
@@ -0,0 +1,291 @@
+#include "idmap.h"
+
+#include <androidfw/AssetManager.h>
+#include <androidfw/ResourceTypes.h>
+#include <utils/String8.h>
+
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+using namespace android;
+
+#define NEXT(b, i, o) do { if (buf.next(&i, &o) < 0) { return -1; } } while (0)
+
+namespace {
+ static const uint32_t IDMAP_MAGIC = 0x706d6469;
+ static const size_t PATH_LENGTH = 256;
+ static const uint32_t IDMAP_HEADER_SIZE = (3 + 2 * (PATH_LENGTH / sizeof(uint32_t)));
+
+ void printe(const char *fmt, ...);
+
+ class IdmapBuffer {
+ private:
+ char *buf_;
+ size_t len_;
+ mutable size_t pos_;
+ public:
+ IdmapBuffer() : buf_((char *)MAP_FAILED), len_(0), pos_(0) {}
+
+ ~IdmapBuffer() {
+ if (buf_ != MAP_FAILED) {
+ munmap(buf_, len_);
+ }
+ }
+
+ int init(const char *idmap_path)
+ {
+ struct stat st;
+ int fd;
+
+ if (stat(idmap_path, &st) < 0) {
+ printe("failed to stat idmap '%s': %s\n", idmap_path, strerror(errno));
+ return -1;
+ }
+ len_ = st.st_size;
+ if ((fd = TEMP_FAILURE_RETRY(open(idmap_path, O_RDONLY))) < 0) {
+ printe("failed to open idmap '%s': %s\n", idmap_path, strerror(errno));
+ return -1;
+ }
+ if ((buf_ = (char*)mmap(NULL, len_, PROT_READ, MAP_PRIVATE, fd, 0)) == MAP_FAILED) {
+ close(fd);
+ printe("failed to mmap idmap: %s\n", strerror(errno));
+ return -1;
+ }
+ close(fd);
+ return 0;
+ }
+
+ int next(uint32_t *i, uint32_t *offset) const
+ {
+ if (!buf_) {
+ printe("failed to read next uint32_t: buffer not initialized\n");
+ return -1;
+ }
+ if (pos_ + 4 > len_) {
+ printe("failed to read next uint32_t: end of buffer reached at pos=0x%08x\n",
+ pos_);
+ return -1;
+ }
+ *offset = pos_ / sizeof(uint32_t);
+ char a = buf_[pos_++];
+ char b = buf_[pos_++];
+ char c = buf_[pos_++];
+ char d = buf_[pos_++];
+ *i = (d << 24) | (c << 16) | (b << 8) | a;
+ return 0;
+ }
+
+ int nextPath(char *b, uint32_t *offset_start, uint32_t *offset_end) const
+ {
+ if (!buf_) {
+ printe("failed to read next path: buffer not initialized\n");
+ return -1;
+ }
+ if (pos_ + PATH_LENGTH > len_) {
+ printe("failed to read next path: end of buffer reached at pos=0x%08x\n", pos_);
+ return -1;
+ }
+ memcpy(b, buf_ + pos_, PATH_LENGTH);
+ *offset_start = pos_ / sizeof(uint32_t);
+ pos_ += PATH_LENGTH;
+ *offset_end = pos_ / sizeof(uint32_t) - 1;
+ return 0;
+ }
+ };
+
+ void printe(const char *fmt, ...)
+ {
+ va_list ap;
+
+ va_start(ap, fmt);
+ fprintf(stderr, "error: ");
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+ }
+
+ void print_header()
+ {
+ printf("SECTION ENTRY VALUE OFFSET COMMENT\n");
+ }
+
+ void print(const char *section, const char *subsection, uint32_t value, uint32_t offset,
+ const char *fmt, ...)
+ {
+ va_list ap;
+
+ va_start(ap, fmt);
+ printf("%-12s %-12s 0x%08x 0x%-4x ", section, subsection, value, offset);
+ vprintf(fmt, ap);
+ printf("\n");
+ va_end(ap);
+ }
+
+ void print_path(const char *section, const char *subsection, uint32_t offset_start,
+ uint32_t offset_end, const char *fmt, ...)
+ {
+ va_list ap;
+
+ va_start(ap, fmt);
+ printf("%-12s %-12s .......... 0x%02x-0x%02x ", section, subsection, offset_start,
+ offset_end);
+ vprintf(fmt, ap);
+ printf("\n");
+ va_end(ap);
+ }
+
+ int resource_metadata(const AssetManager& am, uint32_t res_id,
+ String8 *package, String8 *type, String8 *name)
+ {
+ const ResTable& rt = am.getResources();
+ struct ResTable::resource_name data;
+ if (!rt.getResourceName(res_id, false, &data)) {
+ printe("failed to get resource name id=0x%08x\n", res_id);
+ return -1;
+ }
+ if (package) {
+ *package = String8(String16(data.package, data.packageLen));
+ }
+ if (type) {
+ *type = String8(String16(data.type, data.typeLen));
+ }
+ if (name) {
+ *name = String8(String16(data.name, data.nameLen));
+ }
+ return 0;
+ }
+
+ int package_id(const AssetManager& am)
+ {
+ return (am.getResources().getBasePackageId(0)) << 24;
+ }
+
+ int parse_idmap_header(const IdmapBuffer& buf, AssetManager& am)
+ {
+ uint32_t i, o, e;
+ char path[PATH_LENGTH];
+
+ NEXT(buf, i, o);
+ if (i != IDMAP_MAGIC) {
+ printe("not an idmap file: actual magic constant 0x%08x does not match expected magic "
+ "constant 0x%08x\n", i, IDMAP_MAGIC);
+ return -1;
+ }
+ print_header();
+ print("IDMAP HEADER", "magic", i, o, "");
+
+ NEXT(buf, i, o);
+ print("", "base crc", i, o, "");
+
+ NEXT(buf, i, o);
+ print("", "overlay crc", i, o, "");
+
+ if (buf.nextPath(path, &o, &e) < 0) {
+ // printe done from IdmapBuffer::nextPath
+ return -1;
+ }
+ print_path("", "base path", o, e, "%s", path);
+ if (!am.addAssetPath(String8(path), NULL)) {
+ printe("failed to add '%s' as asset path\n", path);
+ return -1;
+ }
+
+ if (buf.nextPath(path, &o, &e) < 0) {
+ // printe done from IdmapBuffer::nextPath
+ return -1;
+ }
+ print_path("", "overlay path", o, e, "%s", path);
+
+ return 0;
+ }
+
+ int parse_data_header(const IdmapBuffer& buf, const AssetManager& am, Vector<uint32_t>& types)
+ {
+ uint32_t i, o;
+ const uint32_t numeric_package = package_id(am);
+
+ NEXT(buf, i, o);
+ print("DATA HEADER", "types count", i, o, "");
+ const uint32_t N = i;
+
+ for (uint32_t j = 0; j < N; ++j) {
+ NEXT(buf, i, o);
+ if (i == 0) {
+ print("", "padding", i, o, "");
+ } else {
+ String8 type;
+ const uint32_t numeric_type = (j + 1) << 16;
+ const uint32_t res_id = numeric_package | numeric_type;
+ if (resource_metadata(am, res_id, NULL, &type, NULL) < 0) {
+ // printe done from resource_metadata
+ return -1;
+ }
+ print("", "type offset", i, o, "absolute offset 0x%02x, %s",
+ i + IDMAP_HEADER_SIZE, type.string());
+ types.add(numeric_type);
+ }
+ }
+
+ return 0;
+ }
+
+ int parse_data_block(const IdmapBuffer& buf, const AssetManager& am, size_t numeric_type)
+ {
+ uint32_t i, o, n, id_offset;
+ const uint32_t numeric_package = package_id(am);
+
+ NEXT(buf, i, o);
+ print("DATA BLOCK", "entry count", i, o, "");
+ n = i;
+
+ NEXT(buf, i, o);
+ print("", "entry offset", i, o, "");
+ id_offset = i;
+
+ for ( ; n > 0; --n) {
+ String8 type, name;
+
+ NEXT(buf, i, o);
+ if (i == 0) {
+ print("", "padding", i, o, "");
+ } else {
+ uint32_t res_id = numeric_package | numeric_type | id_offset;
+ if (resource_metadata(am, res_id, NULL, &type, &name) < 0) {
+ // printe done from resource_metadata
+ return -1;
+ }
+ print("", "entry", i, o, "%s/%s", type.string(), name.string());
+ }
+ ++id_offset;
+ }
+
+ return 0;
+ }
+}
+
+int idmap_inspect(const char *idmap_path)
+{
+ IdmapBuffer buf;
+ if (buf.init(idmap_path) < 0) {
+ // printe done from IdmapBuffer::init
+ return EXIT_FAILURE;
+ }
+ AssetManager am;
+ if (parse_idmap_header(buf, am) < 0) {
+ // printe done from parse_idmap_header
+ return EXIT_FAILURE;
+ }
+ Vector<uint32_t> types;
+ if (parse_data_header(buf, am, types) < 0) {
+ // printe done from parse_data_header
+ return EXIT_FAILURE;
+ }
+ const size_t N = types.size();
+ for (size_t i = 0; i < N; ++i) {
+ if (parse_data_block(buf, am, types.itemAt(i)) < 0) {
+ // printe done from parse_data_block
+ return EXIT_FAILURE;
+ }
+ }
+ return EXIT_SUCCESS;
+}