Change StringValue to use std::string
Changing the field of 'Value' in edify to std::string from char*.
Meanwhile cleaning up the users of 'Value' and switching them to
cpp style.
Test: compontent tests passed.
Bug: 31713288
Change-Id: Iec5a7d601b1e4ca40935bf1c70d325dafecec235
diff --git a/updater/install.cpp b/updater/install.cpp
index 3546968..d723b38 100644
--- a/updater/install.cpp
+++ b/updater/install.cpp
@@ -116,7 +116,7 @@
//
// fs_type="ext4" partition_type="EMMC" location=device
Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) {
- char* result = NULL;
+ char* result = nullptr;
if (argc != 4 && argc != 5) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 4-5 args, got %d", name, argc);
}
@@ -197,7 +197,7 @@
// is_mounted(mount_point)
Value* IsMountedFn(const char* name, State* state, int argc, Expr* argv[]) {
- char* result = NULL;
+ char* result = nullptr;
if (argc != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
@@ -227,7 +227,7 @@
Value* UnmountFn(const char* name, State* state, int argc, Expr* argv[]) {
- char* result = NULL;
+ char* result = nullptr;
if (argc != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
@@ -284,7 +284,7 @@
// if fs_size > 0, that is the size to use
// if fs_size < 0, then reserve that many bytes at the end of the partition (not for "f2fs")
Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) {
- char* result = NULL;
+ char* result = nullptr;
if (argc != 5) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 5 args, got %d", name, argc);
}
@@ -358,7 +358,7 @@
}
Value* RenameFn(const char* name, State* state, int argc, Expr* argv[]) {
- char* result = NULL;
+ char* result = nullptr;
if (argc != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc);
}
@@ -397,15 +397,10 @@
}
Value* DeleteFn(const char* name, State* state, int argc, Expr* argv[]) {
- char** paths = reinterpret_cast<char**>(malloc(argc * sizeof(char*)));
+ std::vector<std::string> paths;
for (int i = 0; i < argc; ++i) {
- paths[i] = Evaluate(state, argv[i]);
- if (paths[i] == NULL) {
- for (int j = 0; j < i; ++j) {
- free(paths[j]);
- }
- free(paths);
- return NULL;
+ if (!Evaluate(state, argv[i], &paths[i])) {
+ return nullptr;
}
}
@@ -413,15 +408,12 @@
int success = 0;
for (int i = 0; i < argc; ++i) {
- if ((recursive ? dirUnlinkHierarchy(paths[i]) : unlink(paths[i])) == 0)
+ if ((recursive ? dirUnlinkHierarchy(paths[i].c_str()) : unlink(paths[i].c_str())) == 0) {
++success;
- free(paths[i]);
+ }
}
- free(paths);
- char buffer[10];
- sprintf(buffer, "%d", success);
- return StringValue(strdup(buffer));
+ return StringValue(android::base::StringPrintf("%d", success));
}
@@ -483,7 +475,7 @@
NULL, NULL, sehandle);
free(zip_path);
free(dest_path);
- return StringValue(strdup(success ? "t" : ""));
+ return StringValue(success ? "t" : "");
}
@@ -536,7 +528,7 @@
done2:
free(zip_path);
free(dest_path);
- return StringValue(strdup(success ? "t" : ""));
+ return StringValue(success ? "t" : "");
} else {
// The one-argument version returns the contents of the file
// as the result.
@@ -544,10 +536,7 @@
char* zip_path;
if (ReadArgs(state, argv, 1, &zip_path) < 0) return NULL;
- Value* v = reinterpret_cast<Value*>(malloc(sizeof(Value)));
- v->type = VAL_BLOB;
- v->size = -1;
- v->data = NULL;
+ Value* v = new Value(VAL_INVALID, "");
ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip;
const ZipEntry* entry = mzFindZipEntry(za, zip_path);
@@ -556,23 +545,16 @@
goto done1;
}
- v->size = mzGetZipEntryUncompLen(entry);
- v->data = reinterpret_cast<char*>(malloc(v->size));
- if (v->data == NULL) {
- printf("%s: failed to allocate %zd bytes for %s\n",
- name, v->size, zip_path);
- goto done1;
- }
-
+ v->data.resize(mzGetZipEntryUncompLen(entry));
success = mzExtractZipEntryToBuffer(za, entry,
- (unsigned char *)v->data);
+ reinterpret_cast<unsigned char *>(&v->data[0]));
done1:
free(zip_path);
if (!success) {
- free(v->data);
- v->data = NULL;
- v->size = -1;
+ v->data.clear();
+ } else {
+ v->type = VAL_BLOB;
}
return v;
}
@@ -584,13 +566,13 @@
if (argc == 0) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1+ args, got %d", name, argc);
}
- char* target;
- target = Evaluate(state, argv[0]);
- if (target == NULL) return NULL;
+ std::string target;
+ if (!Evaluate(state, argv[0], &target)) {
+ return nullptr;
+ }
char** srcs = ReadVarArgs(state, argc-1, argv+1);
if (srcs == NULL) {
- free(target);
return NULL;
}
@@ -606,12 +588,12 @@
}
if (make_parents(srcs[i])) {
printf("%s: failed to symlink %s to %s: making parents failed\n",
- name, srcs[i], target);
+ name, srcs[i], target.c_str());
++bad;
}
- if (symlink(target, srcs[i]) < 0) {
+ if (symlink(target.c_str(), srcs[i]) < 0) {
printf("%s: failed to symlink %s to %s: %s\n",
- name, srcs[i], target, strerror(errno));
+ name, srcs[i], target.c_str(), strerror(errno));
++bad;
}
free(srcs[i]);
@@ -620,7 +602,7 @@
if (bad) {
return ErrorAbort(state, kSymlinkFailure, "%s: some symlinks failed", name);
}
- return StringValue(strdup(""));
+ return StringValue("");
}
struct perm_parsed_args {
@@ -883,20 +865,20 @@
return ErrorAbort(state, kSetMetadataFailure, "%s: some changes failed", name);
}
- return StringValue(strdup(""));
+ return StringValue("");
}
Value* GetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
- char* key = Evaluate(state, argv[0]);
- if (key == NULL) return NULL;
-
+ std::string key;
+ if (!Evaluate(state, argv[0], &key)) {
+ return nullptr;
+ }
std::string value = android::base::GetProperty(key, "");
- free(key);
- return StringValue(strdup(value.c_str()));
+ return StringValue(value);
}
@@ -1015,7 +997,7 @@
return nullptr;
}
- return StringValue(strdup(CacheSizeCheck(bytes) ? "" : "t"));
+ return StringValue(CacheSizeCheck(bytes) ? "" : "t");
}
// apply_patch(file, size, init_sha1, tgt_sha1, patch)
@@ -1047,17 +1029,16 @@
}
int patchcount = (argc-4) / 2;
- std::unique_ptr<Value*, decltype(&free)> arg_values(ReadValueVarArgs(state, argc-4, argv+4),
- free);
+ std::unique_ptr<Value*> arg_values(ReadValueVarArgs(state, argc-4, argv+4));
if (!arg_values) {
return nullptr;
}
- std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> patch_shas;
- std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> patches;
+ std::vector<std::unique_ptr<Value>> patch_shas;
+ std::vector<std::unique_ptr<Value>> patches;
// Protect values by unique_ptrs first to get rid of memory leak.
for (int i = 0; i < patchcount * 2; i += 2) {
- patch_shas.emplace_back(arg_values.get()[i], FreeValue);
- patches.emplace_back(arg_values.get()[i+1], FreeValue);
+ patch_shas.emplace_back(arg_values.get()[i]);
+ patches.emplace_back(arg_values.get()[i+1]);
}
for (int i = 0; i < patchcount; ++i) {
@@ -1071,7 +1052,7 @@
}
}
- std::vector<char*> patch_sha_str;
+ std::vector<std::string> patch_sha_str;
std::vector<Value*> patch_ptrs;
for (int i = 0; i < patchcount; ++i) {
patch_sha_str.push_back(patch_shas[i]->data);
@@ -1080,9 +1061,9 @@
int result = applypatch(source_filename, target_filename,
target_sha1, target_size,
- patchcount, patch_sha_str.data(), patch_ptrs.data(), NULL);
+ patch_sha_str, patch_ptrs.data(), NULL);
- return StringValue(strdup(result == 0 ? "t" : ""));
+ return StringValue(result == 0 ? "t" : "");
}
// apply_patch_check(file, [sha1_1, ...])
@@ -1095,21 +1076,17 @@
char* filename;
if (ReadArgs(state, argv, 1, &filename) < 0) {
- return NULL;
+ return nullptr;
}
- int patchcount = argc-1;
- char** sha1s = ReadVarArgs(state, argc-1, argv+1);
-
- int result = applypatch_check(filename, patchcount, sha1s);
-
- int i;
- for (i = 0; i < patchcount; ++i) {
- free(sha1s[i]);
+ std::vector<std::string> sha1s;
+ if (!ReadArgs(state, argc-1, argv+1, &sha1s)) {
+ return nullptr;
}
- free(sha1s);
- return StringValue(strdup(result == 0 ? "t" : ""));
+ int result = applypatch_check(filename, sha1s);
+
+ return StringValue(result == 0 ? "t" : "");
}
// This is the updater side handler for ui_print() in edify script. Contents
@@ -1129,7 +1106,7 @@
buffer += "\n";
uiPrint(state, buffer);
- return StringValue(strdup(buffer.c_str()));
+ return StringValue(buffer);
}
Value* WipeCacheFn(const char* name, State* state, int argc, Expr* argv[]) {
@@ -1137,7 +1114,7 @@
return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %d", name, argc);
}
fprintf(((UpdaterInfo*)(state->cookie))->cmd_pipe, "wipe_cache\n");
- return StringValue(strdup("t"));
+ return StringValue("t");
}
Value* RunProgramFn(const char* name, State* state, int argc, Expr* argv[]) {
@@ -1180,10 +1157,7 @@
free(args);
free(args2);
- char buffer[20];
- sprintf(buffer, "%d", status);
-
- return StringValue(strdup(buffer));
+ return StringValue(android::base::StringPrintf("%d", status));
}
// sha1_check(data)
@@ -1199,32 +1173,32 @@
return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
}
- std::unique_ptr<Value*, decltype(&free)> arg_values(ReadValueVarArgs(state, argc, argv), free);
+ std::unique_ptr<Value*> arg_values(ReadValueVarArgs(state, argc, argv));
if (arg_values == nullptr) {
return nullptr;
}
- std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> args;
+ std::vector<std::unique_ptr<Value>> args;
for (int i = 0; i < argc; ++i) {
- args.emplace_back(arg_values.get()[i], FreeValue);
+ args.emplace_back(arg_values.get()[i]);
}
- if (args[0]->size < 0) {
- return StringValue(strdup(""));
+ if (args[0]->type == VAL_INVALID) {
+ return StringValue("");
}
uint8_t digest[SHA_DIGEST_LENGTH];
- SHA1(reinterpret_cast<uint8_t*>(args[0]->data), args[0]->size, digest);
+ SHA1(reinterpret_cast<const uint8_t*>(args[0]->data.c_str()), args[0]->data.size(), digest);
if (argc == 1) {
- return StringValue(strdup(print_sha1(digest).c_str()));
+ return StringValue(print_sha1(digest));
}
for (int i = 1; i < argc; ++i) {
uint8_t arg_digest[SHA_DIGEST_LENGTH];
if (args[i]->type != VAL_STRING) {
printf("%s(): arg %d is not a string; skipping", name, i);
- } else if (ParseSha1(args[i]->data, arg_digest) != 0) {
+ } else if (ParseSha1(args[i]->data.c_str(), arg_digest) != 0) {
// Warn about bad args and skip them.
- printf("%s(): error parsing \"%s\" as sha-1; skipping", name, args[i]->data);
+ printf("%s(): error parsing \"%s\" as sha-1; skipping", name, args[i]->data.c_str());
} else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) {
// Found a match.
return args[i].release();
@@ -1232,7 +1206,7 @@
}
// Didn't match any of the hex strings; return false.
- return StringValue(strdup(""));
+ return StringValue("");
}
// Read a local file and return its contents (the Value* returned
@@ -1244,21 +1218,12 @@
char* filename;
if (ReadArgs(state, argv, 1, &filename) < 0) return NULL;
- Value* v = static_cast<Value*>(malloc(sizeof(Value)));
- if (v == nullptr) {
- return nullptr;
- }
- v->type = VAL_BLOB;
- v->size = -1;
- v->data = nullptr;
+ Value* v = new Value(VAL_INVALID, "");
FileContents fc;
if (LoadFileContents(filename, &fc) == 0) {
- v->data = static_cast<char*>(malloc(fc.data.size()));
- if (v->data != nullptr) {
- memcpy(v->data, fc.data.data(), fc.data.size());
- v->size = fc.data.size();
- }
+ v->type = VAL_BLOB;
+ v->data = std::string(fc.data.begin(), fc.data.end());
}
free(filename);
return v;
@@ -1326,16 +1291,19 @@
// package installation.
FILE* f = ota_fopen(filename, "r+b");
fseek(f, offsetof(struct bootloader_message, stage), SEEK_SET);
- int to_write = strlen(stagestr)+1;
- int max_size = sizeof(((struct bootloader_message*)0)->stage);
+ size_t to_write = strlen(stagestr) + 1;
+ size_t max_size = sizeof(((struct bootloader_message*)0)->stage);
if (to_write > max_size) {
to_write = max_size;
- stagestr[max_size-1] = 0;
+ stagestr[max_size - 1] = 0;
}
- ota_fwrite(stagestr, to_write, 1, f);
+ size_t status = ota_fwrite(stagestr, to_write, 1, f);
ota_fclose(f);
free(stagestr);
+ if (status != to_write) {
+ return StringValue("");
+ }
return StringValue(filename);
}
@@ -1352,11 +1320,14 @@
char buffer[sizeof(((struct bootloader_message*)0)->stage)];
FILE* f = ota_fopen(filename, "rb");
fseek(f, offsetof(struct bootloader_message, stage), SEEK_SET);
- ota_fread(buffer, sizeof(buffer), 1, f);
+ size_t status = ota_fread(buffer, sizeof(buffer), 1, f);
ota_fclose(f);
- buffer[sizeof(buffer)-1] = '\0';
+ if (status != sizeof(buffer)) {
+ return StringValue("");
+ }
- return StringValue(strdup(buffer));
+ buffer[sizeof(buffer)-1] = '\0';
+ return StringValue(buffer);
}
Value* WipeBlockDeviceFn(const char* name, State* state, int argc, Expr* argv[]) {
@@ -1378,7 +1349,7 @@
ota_close(fd);
- return StringValue(strdup(success ? "t" : ""));
+ return StringValue(success ? "t" : "");
}
Value* EnableRebootFn(const char* name, State* state, int argc, Expr* argv[]) {
@@ -1387,7 +1358,7 @@
}
UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
fprintf(ui->cmd_pipe, "enable_reboot\n");
- return StringValue(strdup("t"));
+ return StringValue("t");
}
Value* Tune2FsFn(const char* name, State* state, int argc, Expr* argv[]) {
@@ -1418,7 +1389,7 @@
return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d",
name, result);
}
- return StringValue(strdup("t"));
+ return StringValue("t");
}
void RegisterInstallFunctions() {