Refactor resetprop
This commit is contained in:
topjohnwu
parent
78a3d36ccc
commit
e645c6e465
@ -12,9 +12,11 @@ int prop_exist(const char *name);
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int setprop(const char *name, const char *value);
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int setprop2(const char *name, const char *value, const int trigger);
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char *getprop(const char *name);
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int deleteprop(const char *name, const int trigger);
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char *getprop2(const char *name, int persist);
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int deleteprop(const char *name);
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int deleteprop2(const char *name, const int persist);
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int read_prop_file(const char* filename, const int trigger);
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void getprop_all(void (*cbk)(const char *name));
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void getprop_all(void (*callback)(const char*, const char*));
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#ifdef __cplusplus
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}
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@ -58,9 +58,9 @@ void hide_sensitive_props() {
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}
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}
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static void rm_magisk_prop(const char *name) {
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static void rm_magisk_prop(const char *name, const char *value) {
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if (strstr(name, "magisk")) {
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deleteprop(name, 0);
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deleteprop2(name, 0);
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}
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}
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@ -55,7 +55,7 @@ void launch_magiskhide(int client) {
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hideEnabled = 1;
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LOGI("* Starting MagiskHide\n");
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deleteprop(MAGISKHIDE_PROP, 1);
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deleteprop2(MAGISKHIDE_PROP, 1);
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hide_sensitive_props();
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@ -102,7 +102,7 @@ void stop_magiskhide(int client) {
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hideEnabled = 0;
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setprop(MAGISKHIDE_PROP, "0");
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// Remove without actually removing persist props
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deleteprop(MAGISKHIDE_PROP, 0);
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deleteprop2(MAGISKHIDE_PROP, 0);
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pthread_kill(proc_monitor_thread, SIGUSR1);
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write_int(client, DAEMON_SUCCESS);
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@ -56,249 +56,352 @@
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <dirent.h>
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#include <sys/types.h>
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#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
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#include "_system_properties.h"
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#include "system_properties.h"
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#include "magisk.h"
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#include "resetprop.h"
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extern "C" {
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#include "vector.h"
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}
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#define PRINT_D(...) { LOGD(__VA_ARGS__); if (verbose) printf(__VA_ARGS__); }
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#define PRINT_D(...) { LOGD(__VA_ARGS__); if (verbose) fprintf(stderr, __VA_ARGS__); }
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#define PRINT_E(...) { LOGE(__VA_ARGS__); fprintf(stderr, __VA_ARGS__); }
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#define PERSISTENT_PROPERTY_DIR "/data/property"
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static int verbose = 0;
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static bool is_legal_property_name(const char *name, size_t namelen) {
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static int check_legal_property_name(const char *name) {
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int namelen = strlen(name);
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if (namelen < 1) return false;
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if (name[0] == '.') return false;
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if (name[namelen - 1] == '.') return false;
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if (namelen < 1) goto illegal;
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if (name[0] == '.') goto illegal;
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if (name[namelen - 1] == '.') goto illegal;
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/* Only allow alphanumeric, plus '.', '-', '@', ':', or '_' */
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/* Don't allow ".." to appear in a property name */
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for (size_t i = 0; i < namelen; i++) {
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if (name[i] == '.') {
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// i=0 is guaranteed to never have a dot. See above.
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if (name[i-1] == '.') return false;
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continue;
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}
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if (name[i] == '_' || name[i] == '-' || name[i] == '@' || name[i] == ':') continue;
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if (name[i] >= 'a' && name[i] <= 'z') continue;
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if (name[i] >= 'A' && name[i] <= 'Z') continue;
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if (name[i] >= '0' && name[i] <= '9') continue;
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return false;
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}
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/* Only allow alphanumeric, plus '.', '-', '@', ':', or '_' */
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/* Don't allow ".." to appear in a property name */
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for (size_t i = 0; i < namelen; i++) {
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if (name[i] == '.') {
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// i=0 is guaranteed to never have a dot. See above.
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if (name[i-1] == '.') goto illegal;
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continue;
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}
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if (name[i] == '_' || name[i] == '-' || name[i] == '@' || name[i] == ':') continue;
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if (name[i] >= 'a' && name[i] <= 'z') continue;
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if (name[i] >= 'A' && name[i] <= 'Z') continue;
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if (name[i] >= '0' && name[i] <= '9') continue;
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goto illegal;
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}
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return true;
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return 0;
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illegal:
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PRINT_E("Illegal property name: [%s]\n", name);
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return 1;
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}
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static int usage(char* arg0) {
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fprintf(stderr,
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"resetprop v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu & nkk71) - System Props Modification Tool\n\n"
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"Usage: %s [options] [args...]\n"
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"\n"
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"Options:\n"
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" -v show verbose output\n"
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" -n only modify property in memory\n"
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"\n"
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"%s NAME VALUE set property entry NAME with VALUE\n"
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"%s --file FILE load props from FILE\n"
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"%s --delete NAME remove prop entry NAME\n"
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"\n"
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fprintf(stderr,
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"resetprop v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu & nkk71) - System Props Modification Tool\n\n"
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"Usage: %s [flags] [options...]\n"
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"\n"
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"Options:\n"
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" -h, --help show this message\n"
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" (no arguments) print all properties\n"
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" NAME get property\n"
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" NAME VALUE set property entry NAME with VALUE\n"
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" --file FILE load props from FILE\n"
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" --delete NAME delete property\n"
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"\n"
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"Flags:\n"
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" -v print verbose output to stderr\n"
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" -n set properties without init triggers\n"
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" only affects setprop\n"
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" -p access actual persist storage\n"
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" only affects getprop and deleteprop\n"
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"\n"
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, arg0, arg0, arg0, arg0);
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return 1;
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, arg0);
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return 1;
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}
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static int init_resetprop() {
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if (__system_properties_init2()) {
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PRINT_E("resetprop: Initialize error\n");
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return -1;
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}
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return 0;
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if (__system_properties_init2()) {
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PRINT_E("resetprop: Initialize error\n");
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return -1;
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}
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return 0;
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}
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int prop_exist(const char *name) {
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if (init_resetprop()) return 0;
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return __system_property_find2(name) != NULL;
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if (init_resetprop()) return 0;
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return __system_property_find2(name) != NULL;
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}
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static void read_prop_info(void* cookie, const char *name, const char *value, uint32_t serial) {
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strcpy((char *) cookie, value);
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strcpy((char *) cookie, value);
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}
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char *getprop(const char *name) {
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return getprop2(name, 0);
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}
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// Get prop by name, return string (should free manually!)
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char *getprop(const char *name) {
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if (init_resetprop()) return NULL;
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const prop_info *pi = __system_property_find2(name);
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if (pi == NULL) {
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PRINT_D("resetprop: prop [%s] does not exist\n", name);
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return NULL;
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}
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char value[PROP_VALUE_MAX];
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__system_property_read_callback2(pi, read_prop_info, value);
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PRINT_D("resetprop: getprop [%s]: [%s]\n", name, value);
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return strdup(value);
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char *getprop2(const char *name, int persist) {
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if (check_legal_property_name(name))
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return NULL;
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char value[PROP_VALUE_MAX];
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if (init_resetprop()) return NULL;
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const prop_info *pi = __system_property_find2(name);
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if (pi == NULL) {
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if (persist && strncmp(name, "persist.", 8) == 0) {
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// Try to read from file
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char path[PATH_MAX];
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snprintf(path, sizeof(path), PERSISTENT_PROPERTY_DIR "/%s", name);
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int fd = open(path, O_RDONLY | O_CLOEXEC);
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if (fd < 0) goto no_prop;
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PRINT_D("resetprop: read prop from [%s]\n", path);
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size_t len = read(fd, value, sizeof(value));
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value[len] = '\0'; // Null terminate the read value
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} else {
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no_prop:
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PRINT_D("resetprop: prop [%s] does not exist\n", name);
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return NULL;
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}
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} else {
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__system_property_read_callback2(pi, read_prop_info, value);
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}
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PRINT_D("resetprop: getprop [%s]: [%s]\n", name, value);
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return strdup(value);
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}
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static void (*cb)(const char *);
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struct wrapper {
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void (*func)(const char *, const char *);
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};
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static void run_actual_cb(void* cookie, const char *name, const char *value, uint32_t serial) {
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cb(name);
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static void cb_wrapper(void* cookie, const char *name, const char *value, uint32_t serial) {
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((wrapper *) cookie)->func(name, value);
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}
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static void prop_foreach_cb(const prop_info* pi, void* cookie) {
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__system_property_read_callback2(pi, run_actual_cb, NULL);
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__system_property_read_callback2(pi, cb_wrapper, cookie);
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}
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void getprop_all(void (*cbk)(const char *name)) {
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if (init_resetprop()) return;
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cb = cbk;
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__system_property_foreach2(prop_foreach_cb, NULL);
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class property {
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public:
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property(const char *n, const char *v) {
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name = strdup(n);
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value = strdup(v);
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}
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~property() {
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free((void *)name);
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free((void *)value);
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}
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const char *name;
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const char *value;
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};
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vector prop_list;
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static int prop_cmp(const void *p1, const void *p2) {
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return strcmp((*((property **) p1))->name, (*((property **) p2))->name);
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}
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static void print_all_props_cb(const char *name, const char *value) {
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vec_push_back(&prop_list, new property(name, value));
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}
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static void print_all_props(int persist) {
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void *p;
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vec_init(&prop_list);
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getprop_all(print_all_props_cb);
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if (persist) {
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// Check all persist props in data
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DIR *dir = opendir(PERSISTENT_PROPERTY_DIR);
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struct dirent *entry;
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while ((entry = readdir(dir))) {
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0 )
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continue;
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int found = 0;
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vec_for_each(&prop_list, p) {
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if (strcmp(((property *) p)->name, entry->d_name) == 0) {
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found = 1;
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break;
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}
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}
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if (!found)
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vec_push_back(&prop_list, new property(entry->d_name, getprop2(entry->d_name, 1)));
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}
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}
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vec_sort(&prop_list, prop_cmp);
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vec_for_each(&prop_list, p) {
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printf("[%s]: [%s]\n", ((property *) p)->name, ((property *) p)->value);
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delete((property *) p);
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}
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vec_destroy(&prop_list);
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}
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void getprop_all(void (*callback)(const char*, const char*)) {
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if (init_resetprop()) return;
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struct wrapper wrap = {
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.func = callback
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};
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__system_property_foreach2(prop_foreach_cb, &wrap);
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}
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int setprop(const char *name, const char *value) {
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return setprop2(name, value, 1);
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return setprop2(name, value, 1);
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}
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int setprop2(const char *name, const char *value, const int trigger) {
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if (init_resetprop()) return -1;
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int ret;
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if (check_legal_property_name(name))
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return 1;
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if (init_resetprop()) return -1;
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int ret;
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prop_info *pi = (prop_info*) __system_property_find2(name);
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if (pi != NULL) {
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if (trigger) {
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if (!strncmp(name, "ro.", 3)) deleteprop(name, trigger);
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ret = __system_property_set2(name, value);
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} else {
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ret = __system_property_update2(pi, value, strlen(value));
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}
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} else {
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PRINT_D("resetprop: New prop [%s]\n", name);
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if (trigger) {
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ret = __system_property_set2(name, value);
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} else {
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ret = __system_property_add2(name, strlen(name), value, strlen(value));
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}
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}
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prop_info *pi = (prop_info*) __system_property_find2(name);
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if (pi != NULL) {
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if (trigger) {
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if (strncmp(name, "ro.", 3) == 0) deleteprop(name);
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ret = __system_property_set2(name, value);
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} else {
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ret = __system_property_update2(pi, value, strlen(value));
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}
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} else {
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PRINT_D("resetprop: New prop [%s]\n", name);
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if (trigger) {
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ret = __system_property_set2(name, value);
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} else {
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ret = __system_property_add2(name, strlen(name), value, strlen(value));
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}
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}
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PRINT_D("resetprop: setprop [%s]: [%s] by %s\n", name, value,
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trigger ? "property_service" : "modifing prop data structure");
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PRINT_D("resetprop: setprop [%s]: [%s] by %s\n", name, value,
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trigger ? "property_service" : "modifing prop data structure");
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if (ret)
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PRINT_E("resetprop: setprop error\n");
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if (ret)
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PRINT_E("resetprop: setprop error\n");
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return ret;
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return ret;
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}
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int deleteprop(const char *name, const int trigger) {
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if (init_resetprop()) return -1;
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PRINT_D("resetprop: deleteprop [%s]\n", name);
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if (trigger && strstr(name, "persist.")) {
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char buffer[PATH_MAX];
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snprintf(buffer, sizeof(buffer), "%s/%s", PERSISTENT_PROPERTY_DIR, name);
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unlink(buffer);
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}
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return __system_property_del(name);
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int deleteprop(const char *name) {
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return deleteprop2(name, 1);
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}
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int deleteprop2(const char *name, const int persist) {
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if (check_legal_property_name(name))
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return 1;
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if (init_resetprop()) return -1;
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char path[PATH_MAX];
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path[0] = '\0';
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PRINT_D("resetprop: deleteprop [%s]\n", name);
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if (persist && strncmp(name, "persist.", 8) == 0)
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snprintf(path, sizeof(path), PERSISTENT_PROPERTY_DIR "/%s", name);
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return __system_property_del(name) && unlink(path);
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}
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int read_prop_file(const char* filename, const int trigger) {
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if (init_resetprop()) return -1;
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PRINT_D("resetprop: Load prop file [%s]\n", filename);
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FILE *fp = fopen(filename, "r");
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if (fp == NULL) {
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PRINT_E("Cannot open [%s]\n", filename);
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return 1;
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}
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char *line = NULL, *pch;
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size_t len;
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ssize_t read;
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int comment = 0, i;
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while ((read = getline(&line, &len, fp)) != -1) {
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// Remove the trailing newline
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if (line[read - 1] == '\n') {
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line[read - 1] = '\0';
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--read;
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}
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comment = 0;
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for (i = 0; i < read; ++i) {
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// Ignore starting spaces
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if (line[i] == ' ') continue;
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else {
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// A line starting with # is ignored
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if (line[i] == '#') comment = 1;
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break;
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}
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}
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if (comment) continue;
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pch = strchr(line, '=');
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// Ignore ivalid formats
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if ( ((pch == NULL) || (i >= (pch - line))) || (pch >= line + read - 1) ) continue;
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// Separate the string
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*pch = '\0';
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setprop2(line + i, pch + 1, trigger);
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}
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free(line);
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fclose(fp);
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return 0;
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if (init_resetprop()) return -1;
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PRINT_D("resetprop: Load prop file [%s]\n", filename);
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FILE *fp = fopen(filename, "r");
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if (fp == NULL) {
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PRINT_E("Cannot open [%s]\n", filename);
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return 1;
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}
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char *line = NULL, *pch;
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size_t len;
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ssize_t read;
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int comment = 0, i;
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while ((read = getline(&line, &len, fp)) != -1) {
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// Remove the trailing newline
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if (line[read - 1] == '\n') {
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line[read - 1] = '\0';
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--read;
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}
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comment = 0;
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for (i = 0; i < read; ++i) {
|
||||
// Ignore starting spaces
|
||||
if (line[i] == ' ') continue;
|
||||
else {
|
||||
// A line starting with # is ignored
|
||||
if (line[i] == '#') comment = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (comment) continue;
|
||||
pch = strchr(line, '=');
|
||||
// Ignore ivalid formats
|
||||
if ( ((pch == NULL) || (i >= (pch - line))) || (pch >= line + read - 1) ) continue;
|
||||
// Separate the string
|
||||
*pch = '\0';
|
||||
setprop2(line + i, pch + 1, trigger);
|
||||
}
|
||||
free(line);
|
||||
fclose(fp);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int resetprop_main(int argc, char *argv[]) {
|
||||
int trigger = 1, persist = 0;
|
||||
char *argv0 = argv[0], *prop;
|
||||
|
||||
int del = 0, file = 0, trigger = 1;
|
||||
--argc;
|
||||
++argv;
|
||||
|
||||
int exp_arg = 2;
|
||||
char *name, *value, *filename;
|
||||
// Parse flags and -- options
|
||||
while (argc && argv[0][0] == '-') {
|
||||
for (int idx = 1; 1; ++idx) {
|
||||
switch (argv[0][idx]) {
|
||||
case '-':
|
||||
if (strcmp(argv[0], "--file") == 0 && argc == 2) {
|
||||
return read_prop_file(argv[1], trigger);
|
||||
} else if (strcmp(argv[0], "--delete") == 0 && argc == 2) {
|
||||
return deleteprop2(argv[1], persist);
|
||||
} else if (strcmp(argv[0], "--help") == 0) {
|
||||
goto usage;
|
||||
}
|
||||
case 'v':
|
||||
verbose = 1;
|
||||
continue;
|
||||
case 'p':
|
||||
persist = 1;
|
||||
continue;
|
||||
case 'n':
|
||||
trigger = 0;
|
||||
continue;
|
||||
case '\0':
|
||||
break;
|
||||
case 'h':
|
||||
default:
|
||||
usage:
|
||||
return usage(argv0);
|
||||
}
|
||||
break;
|
||||
}
|
||||
--argc;
|
||||
++argv;
|
||||
}
|
||||
|
||||
if (argc < 3) {
|
||||
return usage(argv[0]);
|
||||
}
|
||||
|
||||
for (int i = 1; i < argc; ++i) {
|
||||
if (!strcmp("-v", argv[i])) {
|
||||
verbose = 1;
|
||||
} else if (!strcmp("-n", argv[i])) {
|
||||
trigger = 0;
|
||||
} else if (!strcmp("--file", argv[i])) {
|
||||
file = 1;
|
||||
exp_arg = 1;
|
||||
} else if (!strcmp("--delete", argv[i])) {
|
||||
del = 1;
|
||||
exp_arg = 1;
|
||||
} else {
|
||||
if (i + exp_arg > argc) {
|
||||
return usage(argv[0]);
|
||||
}
|
||||
if (file) {
|
||||
filename = argv[i];
|
||||
break;
|
||||
} else {
|
||||
if(!is_legal_property_name(argv[i], strlen(argv[i]))) {
|
||||
PRINT_E("Illegal property name: [%s]\n", argv[i]);
|
||||
return 1;
|
||||
}
|
||||
name = argv[i];
|
||||
if (exp_arg > 1) {
|
||||
if (strlen(argv[i + 1]) >= PROP_VALUE_MAX) {
|
||||
PRINT_E("Value too long: [%s]\n", argv[i + 1]);
|
||||
return 1;
|
||||
}
|
||||
value = argv[i + 1];
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (file) {
|
||||
return read_prop_file(filename, trigger);
|
||||
} else if (del) {
|
||||
return deleteprop(name, trigger);
|
||||
} else {
|
||||
return setprop2(name, value, trigger);
|
||||
}
|
||||
|
||||
return 0;
|
||||
switch (argc) {
|
||||
case 0:
|
||||
print_all_props(persist);
|
||||
return 0;
|
||||
case 1:
|
||||
prop = getprop2(argv[0], persist);
|
||||
if (prop == NULL) return 1;
|
||||
printf("%s\n", prop);
|
||||
free(prop);
|
||||
return 0;
|
||||
case 2:
|
||||
return setprop2(argv[0], argv[1], trigger);
|
||||
default:
|
||||
usage(argv0);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user