Magisk/rules.c

159 lines
6.5 KiB
C
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#include "magiskpolicy.h"
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#include "sepolicy.h"
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void allowSuClient(char *target) {
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if (!sepol_exists(target))
return;
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sepol_allow(target, SEPOL_PROC_DOMAIN, "unix_stream_socket", "connectto");
sepol_allow(target, SEPOL_PROC_DOMAIN, "unix_stream_socket", "getopt");
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sepol_allow(target, "devpts", "chr_file", "ioctl");
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sepol_allow(SEPOL_PROC_DOMAIN, target, "fd", "use");
sepol_allow(SEPOL_PROC_DOMAIN, target, "fifo_file", ALL);
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sepol_allow(target, SEPOL_PROC_DOMAIN, "process", "sigchld");
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// Allow access to magisk files
sepol_allow(target, SEPOL_FILE_DOMAIN, "sock_file", "read");
sepol_allow(target, SEPOL_FILE_DOMAIN, "sock_file", "write");
sepol_allow(target, SEPOL_FILE_DOMAIN, "file", ALL);
sepol_allow(target, SEPOL_FILE_DOMAIN, "dir", ALL);
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}
void suRights() {
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sepol_allow("servicemanager", SEPOL_PROC_DOMAIN, "dir", "search");
sepol_allow("servicemanager", SEPOL_PROC_DOMAIN, "dir", "read");
sepol_allow("servicemanager", SEPOL_PROC_DOMAIN, "file", "open");
sepol_allow("servicemanager", SEPOL_PROC_DOMAIN, "file", "read");
sepol_allow("servicemanager", SEPOL_PROC_DOMAIN, "process", "getattr");
sepol_allow("servicemanager", SEPOL_PROC_DOMAIN, "binder", "transfer");
sepol_allow("system_server", SEPOL_PROC_DOMAIN, "binder", "call");
sepol_allow("system_server", SEPOL_PROC_DOMAIN, "fd", "use");
sepol_allow(SEPOL_PROC_DOMAIN, "servicemanager", "dir", "search");
sepol_allow(SEPOL_PROC_DOMAIN, "servicemanager", "dir", "read");
sepol_allow(SEPOL_PROC_DOMAIN, "servicemanager", "file", "open");
sepol_allow(SEPOL_PROC_DOMAIN, "servicemanager", "file", "read");
sepol_allow(SEPOL_PROC_DOMAIN, "servicemanager", "process", "getattr");
sepol_allow(SEPOL_PROC_DOMAIN, "servicemanager", "binder", "transfer");
sepol_allow(SEPOL_PROC_DOMAIN, "servicemanager", "binder", "call");
sepol_allow(SEPOL_PROC_DOMAIN, "system_server", "binder", "transfer");
sepol_allow(SEPOL_PROC_DOMAIN, "system_server", "binder", "call");
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}
void otherToSU() {
// allowLog
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sepol_allow("logd", SEPOL_PROC_DOMAIN, "dir", "search");
sepol_allow("logd", SEPOL_PROC_DOMAIN, "file", "read");
sepol_allow("logd", SEPOL_PROC_DOMAIN, "file", "open");
sepol_allow("logd", SEPOL_PROC_DOMAIN, "file", "getattr");
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// suBackL0
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sepol_allow("system_server", SEPOL_PROC_DOMAIN, "binder", "call");
sepol_allow("system_server", SEPOL_PROC_DOMAIN, "binder", "transfer");
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// suBackL6
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sepol_allow("surfaceflinger", "app_data_file", "dir", ALL);
sepol_allow("surfaceflinger", "app_data_file", "file", ALL);
sepol_allow("surfaceflinger", "app_data_file", "lnk_file", ALL);
sepol_attradd("surfaceflinger", "mlstrustedsubject");
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// suMiscL6
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if (sepol_exists("audioserver"))
sepol_allow("audioserver", "audioserver", "process", "execmem");
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// Liveboot
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sepol_allow("surfaceflinger", SEPOL_PROC_DOMAIN, "process", "ptrace");
sepol_allow("surfaceflinger", SEPOL_PROC_DOMAIN, "binder", "transfer");
sepol_allow("surfaceflinger", SEPOL_PROC_DOMAIN, "binder", "call");
sepol_allow("surfaceflinger", SEPOL_PROC_DOMAIN, "fd", "use");
sepol_allow("debuggerd", SEPOL_PROC_DOMAIN, "process", "ptrace");
// dumpsys
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sepol_allow(ALL, SEPOL_PROC_DOMAIN, "fd", "use");
sepol_allow(ALL, SEPOL_PROC_DOMAIN, "fifo_file", "write");
sepol_allow(ALL, SEPOL_PROC_DOMAIN, "fifo_file", "read");
sepol_allow(ALL, SEPOL_PROC_DOMAIN, "fifo_file", "open");
sepol_allow(ALL, SEPOL_PROC_DOMAIN, "fifo_file", "getattr");
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}
void sepol_magisk_rules() {
// First prevent anything to change sepolicy except ourselves
sepol_deny(ALL, "kernel", "security", "load_policy");
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if (!sepol_exists(SEPOL_PROC_DOMAIN))
sepol_create(SEPOL_PROC_DOMAIN);
if (!sepol_exists(SEPOL_FILE_DOMAIN))
sepol_create(SEPOL_FILE_DOMAIN);
sepol_permissive(SEPOL_PROC_DOMAIN);
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sepol_attradd(SEPOL_PROC_DOMAIN, "mlstrustedsubject");
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sepol_attradd(SEPOL_PROC_DOMAIN, "netdomain");
sepol_attradd(SEPOL_PROC_DOMAIN, "bluetoothdomain");
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sepol_attradd(SEPOL_FILE_DOMAIN, "mlstrustedobject");
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// Let init run stuffs
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sepol_allow("kernel", SEPOL_PROC_DOMAIN, "fd", "use");
sepol_allow("init", SEPOL_PROC_DOMAIN, "process", ALL);
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// Shell, properties, logs
if (sepol_exists("default_prop"))
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sepol_allow(SEPOL_PROC_DOMAIN, "default_prop", "property_service", "set");
sepol_allow(SEPOL_PROC_DOMAIN, "init", "unix_stream_socket", "connectto");
sepol_allow(SEPOL_PROC_DOMAIN, "rootfs", "filesystem", "remount");
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if (sepol_exists("logd"))
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sepol_allow(SEPOL_PROC_DOMAIN, "logd", "unix_stream_socket", "connectto");
sepol_allow(SEPOL_PROC_DOMAIN, SEPOL_PROC_DOMAIN, ALL, ALL);
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// For sepolicy live patching
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sepol_allow(SEPOL_PROC_DOMAIN, "kernel", "security", "read_policy");
sepol_allow(SEPOL_PROC_DOMAIN, "kernel", "security", "load_policy");
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// Allow these client to access su
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allowSuClient("init");
allowSuClient("shell");
allowSuClient("untrusted_app");
allowSuClient("system_app");
allowSuClient("platform_app");
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allowSuClient("priv_app");
allowSuClient("untrusted_app_25");
allowSuClient("untrusted_app_27");
// Some superuser stuffs
suRights();
otherToSU();
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// For mounting loop devices, mirrors, tmpfs
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sepol_allow(SEPOL_PROC_DOMAIN, "kernel", "process", "setsched");
sepol_allow(SEPOL_PROC_DOMAIN, "labeledfs", "filesystem", "mount");
sepol_allow(SEPOL_PROC_DOMAIN, "labeledfs", "filesystem", "unmount");
sepol_allow(SEPOL_PROC_DOMAIN, "tmpfs", "filesystem", "mount");
sepol_allow(SEPOL_PROC_DOMAIN, "tmpfs", "filesystem", "unmount");
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sepol_allow("kernel", ALL, "file", "read");
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// Allow su to do anything to any files/dir/links
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sepol_allow(SEPOL_PROC_DOMAIN, ALL, "file", ALL);
sepol_allow(SEPOL_PROC_DOMAIN, ALL, "dir", ALL);
sepol_allow(SEPOL_PROC_DOMAIN, ALL, "lnk_file", ALL);
sepol_allow(SEPOL_PROC_DOMAIN, ALL, "blk_file", ALL);
sepol_allow(SEPOL_PROC_DOMAIN, ALL, "sock_file", ALL);
sepol_allow(SEPOL_PROC_DOMAIN, ALL, "chr_file", ALL);
sepol_allow(SEPOL_PROC_DOMAIN, ALL, "fifo_file", ALL);
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// For changing attributes
sepol_allow("rootfs", "tmpfs", "filesystem", "associate");
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sepol_allow(SEPOL_FILE_DOMAIN, "labeledfs", "filesystem", "associate");
sepol_allow(SEPOL_FILE_DOMAIN, "tmpfs", "filesystem", "associate");
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// Xposed
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sepol_allow("untrusted_app", "untrusted_app", "capability", "setgid");
sepol_allow("system_server", "dex2oat_exec", "file", ALL);
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// xperms
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if (policydb->policyvers >= POLICYDB_VERSION_XPERMS_IOCTL) {
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sepol_allowxperm("domain", "devpts", "chr_file", "0x5400-0x54FF");
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if (sepol_exists("untrusted_app_25_devpts"))
sepol_allowxperm("domain", "untrusted_app_25_devpts", "chr_file", "0x5400-0x54FF");
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if (sepol_exists("untrusted_app_devpts"))
sepol_allowxperm("domain", "untrusted_app_devpts", "chr_file", "0x5400-0x54FF");
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}
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}