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authorTom Marshall <tdm.code@gmail.com>2017-08-23 20:14:00 +0200
committerDees Troy <dees_troy@teamw.in>2018-05-25 18:48:06 +0200
commitbf4f24f2274a384539b95b8e16df57b2b67f56dd (patch)
treee5da54828f355963368ced0d79a223cdada3589a /updater
parentRevert "kill package_extract_dir" (diff)
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Diffstat (limited to '')
-rw-r--r--updater/install.cpp361
1 files changed, 361 insertions, 0 deletions
diff --git a/updater/install.cpp b/updater/install.cpp
index 86359d9e0..a8ee4bf39 100644
--- a/updater/install.cpp
+++ b/updater/install.cpp
@@ -370,6 +370,67 @@ Value* FormatFn(const char* name, State* state, const std::vector<std::unique_pt
return nullptr;
}
+// rename(src_name, dst_name)
+// Renames src_name to dst_name. It automatically creates the necessary directories for dst_name.
+// Example: rename("system/app/Hangouts/Hangouts.apk", "system/priv-app/Hangouts/Hangouts.apk")
+Value* RenameFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
+ if (argv.size() != 2) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
+ argv.size());
+ }
+
+ std::vector<std::string> args;
+ if (!ReadArgs(state, argv, &args)) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
+ }
+ const std::string& src_name = args[0];
+ const std::string& dst_name = args[1];
+
+ if (src_name.empty()) {
+ return ErrorAbort(state, kArgsParsingFailure, "src_name argument to %s() can't be empty", name);
+ }
+ if (dst_name.empty()) {
+ return ErrorAbort(state, kArgsParsingFailure, "dst_name argument to %s() can't be empty", name);
+ }
+ if (!make_parents(dst_name)) {
+ return ErrorAbort(state, kFileRenameFailure, "Creating parent of %s failed, error %s",
+ dst_name.c_str(), strerror(errno));
+ } else if (access(dst_name.c_str(), F_OK) == 0 && access(src_name.c_str(), F_OK) != 0) {
+ // File was already moved
+ return StringValue(dst_name);
+ } else if (rename(src_name.c_str(), dst_name.c_str()) != 0) {
+ return ErrorAbort(state, kFileRenameFailure, "Rename of %s to %s failed, error %s",
+ src_name.c_str(), dst_name.c_str(), strerror(errno));
+ }
+
+ return StringValue(dst_name);
+}
+
+// delete([filename, ...])
+// Deletes all the filenames listed. Returns the number of files successfully deleted.
+//
+// delete_recursive([dirname, ...])
+// Recursively deletes dirnames and all their contents. Returns the number of directories
+// successfully deleted.
+Value* DeleteFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
+ std::vector<std::string> paths;
+ if (!ReadArgs(state, argv, &paths)) {
+ return nullptr;
+ }
+
+ bool recursive = (strcmp(name, "delete_recursive") == 0);
+
+ int success = 0;
+ for (const auto& path : paths) {
+ if ((recursive ? dirUnlinkHierarchy(path.c_str()) : unlink(path.c_str())) == 0) {
+ ++success;
+ }
+ }
+
+ return StringValue(std::to_string(success));
+}
+
+
Value* ShowProgressFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
@@ -541,6 +602,288 @@ Value* PackageExtractFileFn(const char* name, State* state,
}
}
+// symlink(target, [src1, src2, ...])
+// Creates all sources as symlinks to target. It unlinks any previously existing src1, src2, etc
+// before creating symlinks.
+Value* SymlinkFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
+ if (argv.size() == 0) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1+ args, got %zu", name, argv.size());
+ }
+ std::string target;
+ if (!Evaluate(state, argv[0], &target)) {
+ return nullptr;
+ }
+
+ std::vector<std::string> srcs;
+ if (!ReadArgs(state, argv, &srcs, 1, argv.size())) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
+ }
+
+ size_t bad = 0;
+ for (const auto& src : srcs) {
+ if (unlink(src.c_str()) == -1 && errno != ENOENT) {
+ PLOG(ERROR) << name << ": failed to remove " << src;
+ ++bad;
+ } else if (!make_parents(src)) {
+ LOG(ERROR) << name << ": failed to symlink " << src << " to " << target
+ << ": making parents failed";
+ ++bad;
+ } else if (symlink(target.c_str(), src.c_str()) == -1) {
+ PLOG(ERROR) << name << ": failed to symlink " << src << " to " << target;
+ ++bad;
+ }
+ }
+ if (bad != 0) {
+ return ErrorAbort(state, kSymlinkFailure, "%s: Failed to create %zu symlink(s)", name, bad);
+ }
+ return StringValue("t");
+}
+
+struct perm_parsed_args {
+ bool has_uid;
+ uid_t uid;
+ bool has_gid;
+ gid_t gid;
+ bool has_mode;
+ mode_t mode;
+ bool has_fmode;
+ mode_t fmode;
+ bool has_dmode;
+ mode_t dmode;
+ bool has_selabel;
+ const char* selabel;
+ bool has_capabilities;
+ uint64_t capabilities;
+};
+
+static struct perm_parsed_args ParsePermArgs(State * state,
+ const std::vector<std::string>& args) {
+ struct perm_parsed_args parsed;
+ int bad = 0;
+ static int max_warnings = 20;
+
+ memset(&parsed, 0, sizeof(parsed));
+
+ for (size_t i = 1; i < args.size(); i += 2) {
+ if (args[i] == "uid") {
+ int64_t uid;
+ if (sscanf(args[i + 1].c_str(), "%" SCNd64, &uid) == 1) {
+ parsed.uid = uid;
+ parsed.has_uid = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid UID \"%s\"\n", args[i + 1].c_str());
+ bad++;
+ }
+ continue;
+ }
+ if (args[i] == "gid") {
+ int64_t gid;
+ if (sscanf(args[i + 1].c_str(), "%" SCNd64, &gid) == 1) {
+ parsed.gid = gid;
+ parsed.has_gid = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid GID \"%s\"\n", args[i + 1].c_str());
+ bad++;
+ }
+ continue;
+ }
+ if (args[i] == "mode") {
+ int32_t mode;
+ if (sscanf(args[i + 1].c_str(), "%" SCNi32, &mode) == 1) {
+ parsed.mode = mode;
+ parsed.has_mode = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid mode \"%s\"\n", args[i + 1].c_str());
+ bad++;
+ }
+ continue;
+ }
+ if (args[i] == "dmode") {
+ int32_t mode;
+ if (sscanf(args[i + 1].c_str(), "%" SCNi32, &mode) == 1) {
+ parsed.dmode = mode;
+ parsed.has_dmode = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid dmode \"%s\"\n", args[i + 1].c_str());
+ bad++;
+ }
+ continue;
+ }
+ if (args[i] == "fmode") {
+ int32_t mode;
+ if (sscanf(args[i + 1].c_str(), "%" SCNi32, &mode) == 1) {
+ parsed.fmode = mode;
+ parsed.has_fmode = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid fmode \"%s\"\n", args[i + 1].c_str());
+ bad++;
+ }
+ continue;
+ }
+ if (args[i] == "capabilities") {
+ int64_t capabilities;
+ if (sscanf(args[i + 1].c_str(), "%" SCNi64, &capabilities) == 1) {
+ parsed.capabilities = capabilities;
+ parsed.has_capabilities = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid capabilities \"%s\"\n", args[i + 1].c_str());
+ bad++;
+ }
+ continue;
+ }
+ if (args[i] == "selabel") {
+ if (!args[i + 1].empty()) {
+ parsed.selabel = args[i + 1].c_str();
+ parsed.has_selabel = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid selabel \"%s\"\n", args[i + 1].c_str());
+ bad++;
+ }
+ continue;
+ }
+ if (max_warnings != 0) {
+ printf("ParsedPermArgs: unknown key \"%s\", ignoring\n", args[i].c_str());
+ max_warnings--;
+ if (max_warnings == 0) {
+ LOG(INFO) << "ParsedPermArgs: suppressing further warnings";
+ }
+ }
+ }
+ return parsed;
+}
+
+static int ApplyParsedPerms(State* state, const char* filename, const struct stat* statptr,
+ struct perm_parsed_args parsed) {
+ int bad = 0;
+
+ if (parsed.has_selabel) {
+ if (lsetfilecon(filename, parsed.selabel) != 0) {
+ uiPrintf(state, "ApplyParsedPerms: lsetfilecon of %s to %s failed: %s\n", filename,
+ parsed.selabel, strerror(errno));
+ bad++;
+ }
+ }
+
+ /* ignore symlinks */
+ if (S_ISLNK(statptr->st_mode)) {
+ return bad;
+ }
+
+ if (parsed.has_uid) {
+ if (chown(filename, parsed.uid, -1) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chown of %s to %d failed: %s\n", filename, parsed.uid,
+ strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_gid) {
+ if (chown(filename, -1, parsed.gid) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chgrp of %s to %d failed: %s\n", filename, parsed.gid,
+ strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_mode) {
+ if (chmod(filename, parsed.mode) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n", filename, parsed.mode,
+ strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_dmode && S_ISDIR(statptr->st_mode)) {
+ if (chmod(filename, parsed.dmode) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n", filename, parsed.dmode,
+ strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_fmode && S_ISREG(statptr->st_mode)) {
+ if (chmod(filename, parsed.fmode) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n", filename, parsed.fmode,
+ strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_capabilities && S_ISREG(statptr->st_mode)) {
+ if (parsed.capabilities == 0) {
+ if ((removexattr(filename, XATTR_NAME_CAPS) == -1) && (errno != ENODATA)) {
+ // Report failure unless it's ENODATA (attribute not set)
+ uiPrintf(state, "ApplyParsedPerms: removexattr of %s to %" PRIx64 " failed: %s\n", filename,
+ parsed.capabilities, strerror(errno));
+ bad++;
+ }
+ } else {
+ struct vfs_cap_data cap_data;
+ memset(&cap_data, 0, sizeof(cap_data));
+ cap_data.magic_etc = VFS_CAP_REVISION | VFS_CAP_FLAGS_EFFECTIVE;
+ cap_data.data[0].permitted = (uint32_t)(parsed.capabilities & 0xffffffff);
+ cap_data.data[0].inheritable = 0;
+ cap_data.data[1].permitted = (uint32_t)(parsed.capabilities >> 32);
+ cap_data.data[1].inheritable = 0;
+ if (setxattr(filename, XATTR_NAME_CAPS, &cap_data, sizeof(cap_data), 0) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: setcap of %s to %" PRIx64 " failed: %s\n", filename,
+ parsed.capabilities, strerror(errno));
+ bad++;
+ }
+ }
+ }
+
+ return bad;
+}
+
+// nftw doesn't allow us to pass along context, so we need to use
+// global variables. *sigh*
+static struct perm_parsed_args recursive_parsed_args;
+static State* recursive_state;
+
+static int do_SetMetadataRecursive(const char* filename, const struct stat* statptr, int fileflags,
+ struct FTW* pfwt) {
+ return ApplyParsedPerms(recursive_state, filename, statptr, recursive_parsed_args);
+}
+
+static Value* SetMetadataFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
+ if ((argv.size() % 2) != 1) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects an odd number of arguments, got %zu",
+ name, argv.size());
+ }
+
+ std::vector<std::string> args;
+ if (!ReadArgs(state, argv, &args)) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
+ }
+
+ struct stat sb;
+ if (lstat(args[0].c_str(), &sb) == -1) {
+ return ErrorAbort(state, kSetMetadataFailure, "%s: Error on lstat of \"%s\": %s", name,
+ args[0].c_str(), strerror(errno));
+ }
+
+ struct perm_parsed_args parsed = ParsePermArgs(state, args);
+ int bad = 0;
+ bool recursive = (strcmp(name, "set_metadata_recursive") == 0);
+
+ if (recursive) {
+ recursive_parsed_args = parsed;
+ recursive_state = state;
+ bad += nftw(args[0].c_str(), do_SetMetadataRecursive, 30, FTW_CHDIR | FTW_DEPTH | FTW_PHYS);
+ memset(&recursive_parsed_args, 0, sizeof(recursive_parsed_args));
+ recursive_state = NULL;
+ } else {
+ bad += ApplyParsedPerms(state, args[0].c_str(), &sb, parsed);
+ }
+
+ if (bad > 0) {
+ return ErrorAbort(state, kSetMetadataFailure, "%s: some changes failed", name);
+ }
+
+ return StringValue("");
+}
+
Value* GetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
@@ -1076,8 +1419,25 @@ void RegisterInstallFunctions() {
RegisterFunction("format", FormatFn);
RegisterFunction("show_progress", ShowProgressFn);
RegisterFunction("set_progress", SetProgressFn);
+ RegisterFunction("delete", DeleteFn);
+ RegisterFunction("delete_recursive", DeleteFn);
RegisterFunction("package_extract_dir", PackageExtractDirFn);
RegisterFunction("package_extract_file", PackageExtractFileFn);
+ RegisterFunction("symlink", SymlinkFn);
+
+ // Usage:
+ // set_metadata("filename", "key1", "value1", "key2", "value2", ...)
+ // Example:
+ // set_metadata("/system/bin/netcfg", "uid", 0, "gid", 3003, "mode", 02750, "selabel",
+ // "u:object_r:system_file:s0", "capabilities", 0x0);
+ RegisterFunction("set_metadata", SetMetadataFn);
+
+ // Usage:
+ // set_metadata_recursive("dirname", "key1", "value1", "key2", "value2", ...)
+ // Example:
+ // set_metadata_recursive("/system", "uid", 0, "gid", 0, "fmode", 0644, "dmode", 0755,
+ // "selabel", "u:object_r:system_file:s0", "capabilities", 0x0);
+ RegisterFunction("set_metadata_recursive", SetMetadataFn);
RegisterFunction("getprop", GetPropFn);
RegisterFunction("file_getprop", FileGetPropFn);
@@ -1090,6 +1450,7 @@ void RegisterInstallFunctions() {
RegisterFunction("read_file", ReadFileFn);
RegisterFunction("sha1_check", Sha1CheckFn);
+ RegisterFunction("rename", RenameFn);
RegisterFunction("write_value", WriteValueFn);
RegisterFunction("wipe_cache", WipeCacheFn);