Migrate MagiskInit to C++
This commit is contained in:
topjohnwu
parent
be5f00aa1a
commit
3d269fe8be
@ -73,10 +73,10 @@ LOCAL_C_INCLUDES := \
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$(LIBUTILS)
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LOCAL_SRC_FILES := \
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misc/init.c \
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magiskpolicy/api.c \
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magiskpolicy/magiskpolicy.c \
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magiskpolicy/rules.c \
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misc/init.cpp \
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magiskpolicy/api.cpp \
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magiskpolicy/magiskpolicy.cpp \
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magiskpolicy/rules.cpp \
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magiskpolicy/sepolicy.c
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LOCAL_LDFLAGS := -static
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@ -6,22 +6,22 @@ static const char magiskrc[] =
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"on post-fs-data\n"
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" start logd\n"
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" load_persist_props\n"
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" rm "UNBLOCKFILE"\n"
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" rm " UNBLOCKFILE "\n"
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" start %s\n"
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" wait "UNBLOCKFILE" 10\n"
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" rm "UNBLOCKFILE"\n"
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" wait " UNBLOCKFILE " 10\n"
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" rm " UNBLOCKFILE "\n"
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"\n"
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"service %s /sbin/magisk --startup\n"
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" user root\n"
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" seclabel u:r:"SEPOL_PROC_DOMAIN":s0\n"
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" seclabel u:r:" SEPOL_PROC_DOMAIN ":s0\n"
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" oneshot\n"
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"\n"
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"service %s /sbin/magisk --service\n"
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" class late_start\n"
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" user root\n"
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" seclabel u:r:"SEPOL_PROC_DOMAIN":s0\n"
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" seclabel u:r:" SEPOL_PROC_DOMAIN ":s0\n"
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" oneshot\n"
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"\n"
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@ -1,28 +1,28 @@
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#include "magiskpolicy.h"
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#include "sepolicy.h"
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int sepol_allow(char *s, char *t, char *c, char *p) {
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// printf("allow %s %s %s %s\n", s, t, c, p);
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int sepol_allow(const char *s, const char *t, const char *c, const char *p) {
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// printf("allow %s %s %s %s\n", s, t, c, p);
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return add_rule(s, t, c, p, AVTAB_ALLOWED, 0);
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}
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int sepol_deny(char *s, char *t, char *c, char *p) {
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int sepol_deny(const char *s, const char *t, const char *c, const char *p) {
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// printf("deny %s %s %s %s\n", s, t, c, p);
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return add_rule(s, t, c, p, AVTAB_ALLOWED, 1);
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}
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int sepol_auditallow(char *s, char *t, char *c, char *p) {
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int sepol_auditallow(const char *s, const char *t, const char *c, const char *p) {
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// printf("auditallow %s %s %s %s\n", s, t, c, p);
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return add_rule(s, t, c, p, AVTAB_AUDITALLOW, 0);
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}
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int sepol_auditdeny(char *s, char *t, char *c, char *p) {
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int sepol_auditdeny(const char *s, const char *t, const char *c, const char *p) {
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// printf("auditdeny %s %s %s %s\n", s, t, c, p);
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return add_rule(s, t, c, p, AVTAB_AUDITDENY, 0);
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}
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int sepol_typetrans(char *s, char *t, char *c, char *d, char *o) {
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if (o == NULL) {
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int sepol_typetrans(const char *s, const char *t, const char *c, const char *d, const char *o) {
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if (o == nullptr) {
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// printf("add_trans %s %s %s %s\n", s, t, c ,d);
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return add_transition(s, t, c, d);
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} else {
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@ -31,41 +31,41 @@ int sepol_typetrans(char *s, char *t, char *c, char *d, char *o) {
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}
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}
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int sepol_allowxperm(char *s, char *t, char *c, char *range) {
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int sepol_allowxperm(const char *s, const char *t, const char *c, const char *range) {
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// printf("allowxperm %s %s %s %s\n", s, t, c, range);
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return add_xperm_rule(s, t, c, range, AVTAB_XPERMS_ALLOWED, 0);
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}
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int sepol_auditallowxperm(char *s, char *t, char *c, char *range) {
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int sepol_auditallowxperm(const char *s, const char *t, const char *c, const char *range) {
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// printf("auditallowxperm %s %s %s %s\n", s, t, c, range);
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return add_xperm_rule(s, t, c, range, AVTAB_XPERMS_AUDITALLOW, 0);
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}
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int sepol_dontauditxperm(char *s, char *t, char *c, char *range) {
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int sepol_dontauditxperm(const char *s, const char *t, const char *c, const char *range) {
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// printf("dontauditxperm %s %s %s %s\n", s, t, c, range);
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return add_xperm_rule(s, t, c, range, AVTAB_XPERMS_DONTAUDIT, 0);
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}
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int sepol_permissive(char *s) {
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int sepol_permissive(const char *s) {
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// printf("permissive %s\n", s);
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return set_domain_state(s, 1);
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}
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int sepol_enforce(char *s) {
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int sepol_enforce(const char *s) {
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// printf("enforce %s\n", s);
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return set_domain_state(s, 0);
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}
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int sepol_create(char *s) {
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int sepol_create(const char *s) {
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// printf("create %s\n", s);
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return create_domain(s);
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}
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int sepol_attradd(char *s, char *a) {
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int sepol_attradd(const char *s, const char *a) {
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// printf("attradd %s %s\n", s, a);
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return add_typeattribute(s, a);
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}
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int sepol_exists(char* source) {
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return !! hashtab_search(policydb->p_types.table, source);
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int sepol_exists(const char *source) {
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return hashtab_search(policydb->p_types.table, source) != nullptr;
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}
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@ -1,500 +0,0 @@
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/* magiskpolicy.c - Main function for policy patching
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*
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* Includes all the parsing logic for the policy statements
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*/
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#include <stdio.h>
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#include <limits.h>
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#include "sepolicy.h"
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#include "vector.h"
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#include "magiskpolicy.h"
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#include "magisk.h"
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#include "flags.h"
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static int syntax_err = 0;
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static char err_msg[ARG_MAX];
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static void statements() {
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fprintf(stderr,
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"One policy statement should be treated as one parameter;\n"
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"this means a full policy statement should be enclosed in quotes;\n"
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"multiple policy statements can be provided in a single command\n"
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"\n"
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"The statements has a format of \"<action> [args...]\"\n"
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"Use '*' in args to represent every possible match.\n"
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"Collections wrapped in curly brackets can also be used as args.\n"
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"\n"
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"Supported policy statements:\n"
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"\n"
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"Type 1:\n"
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"\"<action> source-class target-class permission-class permission\"\n"
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"Action: allow, deny, auditallow, auditdeny\n"
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"\n"
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"Type 2:\n"
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"\"<action> source-class target-class permission-class ioctl range\"\n"
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"Action: allowxperm, auditallowxperm, dontauditxperm\n"
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"\n"
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"Type 3:\n"
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"\"<action> class\"\n"
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"Action: create, permissive, enforcing\n"
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"\n"
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"Type 4:\n"
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"\"attradd class attribute\"\n"
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"\n"
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"Type 5:\n"
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"\"typetrans source-class target-class permission-class default-class (optional: object-name)\"\n"
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"\n"
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"Notes:\n"
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"- typetrans does not support the all match '*' syntax\n"
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"- permission-class cannot be collections\n"
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"- source-class and target-class can also be attributes\n"
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"\n"
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"Example: allow { source1 source2 } { target1 target2 } permission-class *\n"
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"Will be expanded to:\n"
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"\n"
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"allow source1 target1 permission-class { all-permissions }\n"
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"allow source1 target2 permission-class { all-permissions }\n"
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"allow source2 target1 permission-class { all-permissions }\n"
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"allow source2 target2 permission-class { all-permissions }\n"
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"\n"
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);
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}
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static void usage(char *arg0) {
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fprintf(stderr,
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"MagiskPolicy v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu)\n\n"
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"Usage: %s [--options...] [policy statements...]\n"
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"\n"
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"Options:\n"
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" --live directly apply sepolicy live\n"
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" --magisk inject built-in rules for a minimal\n"
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" Magisk selinux environment\n"
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" --load FILE load policies from FILE\n"
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" --compile-split compile and load split cil policies\n"
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" from system and vendor just like init\n"
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" --save FILE save policies to FILE\n"
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"\n"
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"If neither --load or --compile-split is specified, it will load\n"
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"from current live policies (" SELINUX_POLICY ")\n"
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"\n"
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, arg0);
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statements();
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exit(1);
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}
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// Pattern 1: action { source } { target } class { permission }
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static int parse_pattern_1(int action, char* statement) {
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int state = 0, in_bracket = 0;
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char *tok, *class, *saveptr;
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struct vector source, target, permission;
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vec_init(&source);
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vec_init(&target);
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vec_init(&permission);
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tok = strtok_r(statement, " ", &saveptr);
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while (tok != NULL) {
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if (tok[0] == '{') {
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if (in_bracket || state == 2) return 1;
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in_bracket = 1;
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if (tok[1]) {
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++tok;
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continue;
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}
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} else if (tok[strlen(tok) - 1] == '}') {
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if (!in_bracket || state == 2) return 1;
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in_bracket = 0;
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if (strlen(tok) - 1) {
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tok[strlen(tok) - 1] = '\0';
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continue;
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}
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} else {
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if (tok[0] == '*') tok = ALL;
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struct vector *vec;
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switch (state) {
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case 0:
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vec = &source;
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break;
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case 1:
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vec = ⌖
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break;
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case 2:
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vec = NULL;
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class = tok;
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break;
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case 3:
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vec = &permission;
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break;
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default:
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return 1;
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}
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vec_push_back(vec, tok);
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}
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if (!in_bracket) ++state;
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tok = strtok_r(NULL, " ", &saveptr);
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}
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if (state != 4) return 1;
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for(int i = 0; i < source.size; ++i)
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for (int j = 0; j < target.size; ++j)
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for (int k = 0; k < permission.size; ++k) {
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int (*action_func)(char*, char*, char*, char*);
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char *action_str;
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switch (action) {
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case 0:
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action_func = sepol_allow;
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action_str = "allow";
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break;
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case 1:
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action_func = sepol_deny;
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action_str = "deny";
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break;
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case 2:
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action_func = sepol_auditallow;
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action_str = "auditallow";
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break;
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case 3:
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action_func = sepol_auditdeny;
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action_str = "auditdeny";
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break;
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default:
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return 1;
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}
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if (action_func(source.data[i], target.data[j], class, permission.data[k]))
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fprintf(stderr, "Error in: %s %s %s %s %s\n",
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action_str, (char *) source.data[i], (char *) target.data[j], class, (char *) permission.data[k]);
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}
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vec_destroy(&source);
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vec_destroy(&target);
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vec_destroy(&permission);
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return 0;
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}
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// Pattern 2: action { class } { attribute }
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static int parse_pattern_2(int action, char* statement) {
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int state = 0, in_bracket = 0;
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char *tok, *saveptr;
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struct vector class, attribute;
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vec_init(&class);
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vec_init(&attribute);
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tok = strtok_r(statement, " ", &saveptr);
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while (tok != NULL) {
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if (tok[0] == '{') {
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if (in_bracket) return 1;
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in_bracket = 1;
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if (tok[1]) {
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++tok;
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continue;
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}
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} else if (tok[strlen(tok) - 1] == '}') {
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if (!in_bracket) return 1;
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in_bracket = 0;
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if (strlen(tok) - 1) {
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tok[strlen(tok) - 1] = '\0';
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continue;
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}
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} else {
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if (tok[0] == '*') tok = ALL;
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struct vector *vec;
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switch (state) {
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case 0:
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vec = &class;
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break;
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case 1:
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vec = &attribute;
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break;
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default:
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return 1;
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}
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vec_push_back(vec, tok);
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}
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if (!in_bracket) ++state;
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tok = strtok_r(NULL, " ", &saveptr);
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}
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if (state != 2) return 1;
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for(int i = 0; i < class.size; ++i)
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for (int j = 0; j < attribute.size; ++j) {
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int (*action_func)(char*, char*);
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char *action_str;
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switch (action) {
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case 0:
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action_func = sepol_attradd;
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action_str = "attradd";
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break;
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default:
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return 1;
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}
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if (action_func(class.data[i], attribute.data[j]))
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fprintf(stderr, "Error in: %s %s %s\n",
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action_str, (char *) class.data[i], (char *) attribute.data[j]);
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}
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vec_destroy(&class);
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vec_destroy(&attribute);
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return 0;
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}
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// Pattern 3: action { type }
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static int parse_pattern_3(int action, char* statement) {
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char *tok, *saveptr;
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struct vector classes;
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vec_init(&classes);
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tok = strtok_r(statement, " {}", &saveptr);
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while (tok != NULL) {
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if (tok[0] == '*') tok = ALL;
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vec_push_back(&classes, tok);
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tok = strtok_r(NULL, " {}", &saveptr);
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}
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for (int i = 0; i < classes.size; ++i) {
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int (*action_func)(char*);
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char *action_str;
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switch (action) {
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case 0:
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action_func = sepol_create;
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action_str = "create";
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break;
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case 1:
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action_func = sepol_permissive;
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action_str = "permissive";
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break;
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case 2:
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action_func = sepol_enforce;
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action_str = "enforce";
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break;
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}
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if (action_func(classes.data[i]))
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fprintf(stderr, "Error in: %s %s\n", action_str, (char *) classes.data[i]);
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}
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vec_destroy(&classes);
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return 0;
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}
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// Pattern 4: action source target class default (filename)
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static int parse_pattern_4(int action, char* statement) {
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int state = 0;
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char *tok, *saveptr;
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char *source, *target, *class, *def, *filename = NULL;
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tok = strtok_r(statement, " ", &saveptr);
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while (tok != NULL) {
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switch(state) {
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case 0:
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source = tok;
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break;
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case 1:
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target = tok;
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break;
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case 2:
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class = tok;
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break;
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case 3:
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def = tok;
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break;
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case 4:
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filename = tok;
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break;
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default:
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return 1;
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}
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tok = strtok_r(NULL, " ", &saveptr);
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++state;
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}
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if (state < 4) return 1;
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if (sepol_typetrans(source, target, class, def, filename))
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fprintf(stderr, "Error in: typetrans %s %s %s %s %s\n", source, target, class, def, filename ? filename : "");
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return 0;
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}
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// Pattern 5: action { source } { target } { class } ioctl range
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static int parse_pattern_5(int action, char* statement) {
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int state = 0, in_bracket = 0;
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char *tok, *range, *saveptr;
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struct vector source, target, class;
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vec_init(&source);
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vec_init(&target);
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vec_init(&class);
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tok = strtok_r(statement, " ", &saveptr);
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while (tok != NULL) {
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if (tok[0] == '{') {
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if (in_bracket || state == 3 || state == 4) return 1;
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in_bracket = 1;
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if (tok[1]) {
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++tok;
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continue;
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}
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} else if (tok[strlen(tok) - 1] == '}') {
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if (!in_bracket || state == 3 || state == 4) return 1;
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in_bracket = 0;
|
||||
if (strlen(tok) - 1) {
|
||||
tok[strlen(tok) - 1] = '\0';
|
||||
continue;
|
||||
}
|
||||
} else {
|
||||
if (tok[0] == '*') tok = ALL;
|
||||
struct vector *vec;
|
||||
switch (state) {
|
||||
case 0:
|
||||
vec = &source;
|
||||
break;
|
||||
case 1:
|
||||
vec = ⌖
|
||||
break;
|
||||
case 2:
|
||||
vec = &class;
|
||||
break;
|
||||
case 3:
|
||||
// Should always be ioctl
|
||||
vec = NULL;
|
||||
break;
|
||||
case 4:
|
||||
vec = NULL;
|
||||
range = tok;
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
vec_push_back(vec, tok);
|
||||
}
|
||||
if (!in_bracket) ++state;
|
||||
tok = strtok_r(NULL, " ", &saveptr);
|
||||
}
|
||||
if (state != 5) return 1;
|
||||
for(int i = 0; i < source.size; ++i)
|
||||
for (int j = 0; j < target.size; ++j)
|
||||
for (int k = 0; k < class.size; ++k) {
|
||||
int (*action_func)(char*, char*, char*, char*);
|
||||
char *action_str;
|
||||
switch (action) {
|
||||
case 0:
|
||||
action_func = sepol_allowxperm;
|
||||
action_str = "allowxperm";
|
||||
break;
|
||||
case 1:
|
||||
action_func = sepol_auditallowxperm;
|
||||
action_str = "auditallowxperm";
|
||||
break;
|
||||
case 2:
|
||||
action_func = sepol_dontauditxperm;
|
||||
action_str = "dontauditxperm";
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
if (action_func(source.data[i], target.data[j], class.data[k], range))
|
||||
fprintf(stderr, "Error in: %s %s %s %s %s\n",
|
||||
action_str, (char *) source.data[i], (char *) target.data[j], (char *) class.data[k], range);
|
||||
}
|
||||
vec_destroy(&source);
|
||||
vec_destroy(&target);
|
||||
vec_destroy(&class);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void syntax_error_msg() {
|
||||
fprintf(stderr, "Syntax error in \"%s\"\n", err_msg);
|
||||
syntax_err = 1;
|
||||
}
|
||||
|
||||
int magiskpolicy_main(int argc, char *argv[]) {
|
||||
char *outfile = NULL, *tok, *saveptr;
|
||||
int magisk = 0;
|
||||
struct vector rules;
|
||||
|
||||
vec_init(&rules);
|
||||
|
||||
if (argc < 2) usage(argv[0]);
|
||||
for (int i = 1; i < argc; ++i) {
|
||||
if (argv[i][0] == '-' && argv[i][1] == '-') {
|
||||
if (strcmp(argv[i] + 2, "live") == 0)
|
||||
outfile = SELINUX_LOAD;
|
||||
else if (strcmp(argv[i] + 2, "magisk") == 0)
|
||||
magisk = 1;
|
||||
else if (strcmp(argv[i] + 2, "load") == 0) {
|
||||
if (i + 1 >= argc)
|
||||
usage(argv[0]);
|
||||
if (load_policydb(argv[i + 1])) {
|
||||
fprintf(stderr, "Cannot load policy from %s\n", argv[i + 1]);
|
||||
return 1;
|
||||
}
|
||||
++i;
|
||||
} else if (strcmp(argv[i] + 2, "compile-split") == 0) {
|
||||
if (compile_split_cil()) {
|
||||
fprintf(stderr, "Cannot compile split cil\n");
|
||||
return 1;
|
||||
}
|
||||
} else if (strcmp(argv[i] + 2, "save") == 0) {
|
||||
if (i + 1 >= argc)
|
||||
usage(argv[0]);
|
||||
outfile = argv[i + 1];
|
||||
++i;
|
||||
} else {
|
||||
usage(argv[0]);
|
||||
}
|
||||
} else {
|
||||
vec_push_back(&rules, argv[i]);
|
||||
}
|
||||
}
|
||||
|
||||
// Use current policy if nothing is loaded
|
||||
if(policydb == NULL && load_policydb(SELINUX_POLICY)) {
|
||||
fprintf(stderr, "Cannot load policy from " SELINUX_POLICY "\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (magisk)
|
||||
sepol_magisk_rules();
|
||||
|
||||
for (int i = 0; i < rules.size; ++i) {
|
||||
// Since strtok will modify the origin string, copy the policy for error messages
|
||||
strcpy(err_msg, rules.data[i]);
|
||||
tok = strtok_r(rules.data[i], " ", &saveptr);
|
||||
if (strcmp(tok, "allow") == 0) {
|
||||
if (parse_pattern_1(0, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "deny") == 0) {
|
||||
if (parse_pattern_1(1, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "auditallow") == 0) {
|
||||
if (parse_pattern_1(2, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "auditdeny") == 0) {
|
||||
if (parse_pattern_1(3, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "attradd") == 0) {
|
||||
if (parse_pattern_2(0, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "create") == 0) {
|
||||
if (parse_pattern_3(0, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "permissive") == 0) {
|
||||
if (parse_pattern_3(1, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "enforce") == 0) {
|
||||
if (parse_pattern_3(2, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "typetrans") == 0) {
|
||||
if (parse_pattern_4(0, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "allowxperm") == 0) {
|
||||
if (parse_pattern_5(0, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "auditallowxperm") == 0) {
|
||||
if (parse_pattern_5(1, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else if (strcmp(tok, "dontauditxperm") == 0) {
|
||||
if (parse_pattern_5(2, rules.data[i] + strlen(tok) + 1))
|
||||
syntax_error_msg();
|
||||
} else {
|
||||
syntax_error_msg();
|
||||
}
|
||||
}
|
||||
|
||||
if (syntax_err)
|
||||
statements();
|
||||
|
||||
vec_destroy(&rules);
|
||||
|
||||
if (outfile && dump_policydb(outfile)) {
|
||||
fprintf(stderr, "Cannot dump policy to %s\n", outfile);
|
||||
return 1;
|
||||
}
|
||||
|
||||
destroy_policydb();
|
||||
return 0;
|
||||
}
|
||||
462
native/jni/magiskpolicy/magiskpolicy.cpp
Normal file
462
native/jni/magiskpolicy/magiskpolicy.cpp
Normal file
@ -0,0 +1,462 @@
|
||||
/* magiskpolicy.cpp - Main function for policy patching
|
||||
*
|
||||
* Includes all the parsing logic for the policy statements
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <limits.h>
|
||||
|
||||
#include "sepolicy.h"
|
||||
#include "array.h"
|
||||
#include "magiskpolicy.h"
|
||||
#include "magisk.h"
|
||||
#include "flags.h"
|
||||
|
||||
static const char *type_msg_1 =
|
||||
"Type 1:\n"
|
||||
"\"<action> source-class target-class permission-class permission\"\n"
|
||||
"Action: allow, deny, auditallow, auditdeny\n";
|
||||
|
||||
static const char *type_msg_2 =
|
||||
"Type 2:\n"
|
||||
"\"<action> source-class target-class permission-class ioctl range\"\n"
|
||||
"Action: allowxperm, auditallowxperm, dontauditxperm\n";
|
||||
|
||||
static const char *type_msg_3 =
|
||||
"Type 3:\n"
|
||||
"\"<action> class\"\n"
|
||||
"Action: create, permissive, enforcing\n";
|
||||
|
||||
static const char *type_msg_4 =
|
||||
"Type 4:\n"
|
||||
"\"attradd class attribute\"\n";
|
||||
|
||||
static const char *type_msg_5 =
|
||||
"Type 5:\n"
|
||||
"\"typetrans source-class target-class permission-class default-class (optional: object-name)\"\n";
|
||||
|
||||
|
||||
[[noreturn]] static void statements() {
|
||||
fprintf(stderr,
|
||||
"One policy statement should be treated as one parameter;\n"
|
||||
"this means a full policy statement should be enclosed in quotes;\n"
|
||||
"multiple policy statements can be provided in a single command\n"
|
||||
"\n"
|
||||
"The statements has a format of \"<action> [args...]\"\n"
|
||||
"Use '*' in args to represent every possible match.\n"
|
||||
"Collections wrapped in curly brackets can also be used as args.\n"
|
||||
"\n"
|
||||
"Supported policy statements:\n"
|
||||
"\n"
|
||||
"%s\n"
|
||||
"%s\n"
|
||||
"%s\n"
|
||||
"%s\n"
|
||||
"%s\n"
|
||||
"Notes:\n"
|
||||
"- typetrans does not support the all match '*' syntax\n"
|
||||
"- permission-class cannot be collections\n"
|
||||
"- source-class and target-class can also be attributes\n"
|
||||
"\n"
|
||||
"Example: allow { source1 source2 } { target1 target2 } permission-class *\n"
|
||||
"Will be expanded to:\n"
|
||||
"\n"
|
||||
"allow source1 target1 permission-class { all-permissions }\n"
|
||||
"allow source1 target2 permission-class { all-permissions }\n"
|
||||
"allow source2 target1 permission-class { all-permissions }\n"
|
||||
"allow source2 target2 permission-class { all-permissions }\n"
|
||||
"\n",
|
||||
type_msg_1, type_msg_2, type_msg_3, type_msg_4, type_msg_5);
|
||||
exit(0);
|
||||
}
|
||||
|
||||
[[noreturn]] static void usage(char *arg0) {
|
||||
fprintf(stderr,
|
||||
"MagiskPolicy v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu)\n\n"
|
||||
"Usage: %s [--options...] [policy statements...]\n"
|
||||
"\n"
|
||||
"Options:\n"
|
||||
" --help show help message for policy statements\n"
|
||||
" --load FILE load policies from FILE\n"
|
||||
" --compile-split compile and load split cil policies\n"
|
||||
" from system and vendor just like init\n"
|
||||
" --save FILE save policies to FILE\n"
|
||||
" --live directly apply sepolicy live\n"
|
||||
" --magisk inject built-in rules for a minimal\n"
|
||||
" Magisk selinux environment\n"
|
||||
"\n"
|
||||
"If neither --load or --compile-split is specified, it will load\n"
|
||||
"from current live policies (" SELINUX_POLICY ")\n"
|
||||
"\n",
|
||||
arg0);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
static char *parse_bracket(char *str, Array<const char *> *vec) {
|
||||
str = strchr(str, '{') + 1;
|
||||
char *end = strchr(str, '}');
|
||||
if (end == nullptr)
|
||||
return nullptr;
|
||||
*end = '\0';
|
||||
char *cur;
|
||||
while ((cur = strtok_r(nullptr, " ", &str)) != nullptr)
|
||||
vec->push_back(cur);
|
||||
return end + 1;
|
||||
}
|
||||
|
||||
// Pattern 1: action { source } { target } class { permission }
|
||||
static int parse_pattern_1(int action, char *stmt) {
|
||||
int state = 0;
|
||||
char *cur, *cls;
|
||||
Array<const char*> source, target, permission;
|
||||
while ((cur = strtok_r(nullptr, " ", &stmt)) != nullptr) {
|
||||
if (cur[0] == '*') cur = ALL;
|
||||
Array<const char *> *vec;
|
||||
switch (state) {
|
||||
case 0:
|
||||
vec = &source;
|
||||
break;
|
||||
case 1:
|
||||
vec = ⌖
|
||||
break;
|
||||
case 2:
|
||||
vec = nullptr;
|
||||
cls = cur;
|
||||
break;
|
||||
case 3:
|
||||
vec = &permission;
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (vec) {
|
||||
if (cur == nullptr || cur[0] != '{') {
|
||||
vec->push_back(cur);
|
||||
} else {
|
||||
stmt[-1] = ' ';
|
||||
stmt = parse_bracket(cur, vec);
|
||||
if (stmt == nullptr)
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
++state;
|
||||
}
|
||||
if (state != 4)
|
||||
return 1;
|
||||
for(int i = 0; i < source.size(); ++i)
|
||||
for (int j = 0; j < target.size(); ++j)
|
||||
for (int k = 0; k < permission.size(); ++k) {
|
||||
int (*action_func)(const char*, const char*, const char*, const char*);
|
||||
const char *action_str;
|
||||
switch (action) {
|
||||
case 0:
|
||||
action_func = sepol_allow;
|
||||
action_str = "allow";
|
||||
break;
|
||||
case 1:
|
||||
action_func = sepol_deny;
|
||||
action_str = "deny";
|
||||
break;
|
||||
case 2:
|
||||
action_func = sepol_auditallow;
|
||||
action_str = "auditallow";
|
||||
break;
|
||||
case 3:
|
||||
action_func = sepol_auditdeny;
|
||||
action_str = "auditdeny";
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
if (action_func(source[i], target[j], cls, permission[k]))
|
||||
fprintf(stderr, "Error in: %s %s %s %s %s\n",
|
||||
action_str, source[i], target[j], cls, permission[k]);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Pattern 2: action { source } { target } { class } ioctl range
|
||||
static int parse_pattern_2(int action, char *stmt) {
|
||||
int state = 0;
|
||||
char *cur, *range;
|
||||
Array<const char *> source, target, cls;
|
||||
while ((cur = strtok_r(nullptr, " ", &stmt)) != nullptr) {
|
||||
if (cur[0] == '*') cur = ALL;
|
||||
Array<const char *> *vec;
|
||||
switch (state) {
|
||||
case 0:
|
||||
vec = &source;
|
||||
break;
|
||||
case 1:
|
||||
vec = ⌖
|
||||
break;
|
||||
case 2:
|
||||
vec = &cls;
|
||||
break;
|
||||
case 3:
|
||||
// Currently only support ioctl
|
||||
vec = nullptr;
|
||||
break;
|
||||
case 4:
|
||||
vec = nullptr;
|
||||
range = cur;
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (vec) {
|
||||
if (cur == nullptr || cur[0] != '{') {
|
||||
vec->push_back(cur);
|
||||
} else {
|
||||
stmt[-1] = ' ';
|
||||
stmt = parse_bracket(cur, vec);
|
||||
if (stmt == nullptr)
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
++state;
|
||||
}
|
||||
if (state != 5) return 1;
|
||||
for(int i = 0; i < source.size(); ++i)
|
||||
for (int j = 0; j < target.size(); ++j)
|
||||
for (int k = 0; k < cls.size(); ++k) {
|
||||
int (*action_func)(const char*, const char*, const char*, const char*);
|
||||
const char *action_str;
|
||||
switch (action) {
|
||||
case 0:
|
||||
action_func = sepol_allowxperm;
|
||||
action_str = "allowxperm";
|
||||
break;
|
||||
case 1:
|
||||
action_func = sepol_auditallowxperm;
|
||||
action_str = "auditallowxperm";
|
||||
break;
|
||||
case 2:
|
||||
action_func = sepol_dontauditxperm;
|
||||
action_str = "dontauditxperm";
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
if (action_func(source[i], target[j], cls[k], range))
|
||||
fprintf(stderr, "Error in: %s %s %s %s %s\n",
|
||||
action_str, source[i], target[j], cls[k], range);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Pattern 3: action { type }
|
||||
static int parse_pattern_3(int action, char* stmt) {
|
||||
char *cur;
|
||||
Array<const char *> domains;
|
||||
while ((cur = strtok_r(nullptr, " {}", &stmt)) != nullptr) {
|
||||
if (cur[0] == '*') cur = ALL;
|
||||
domains.push_back(cur);
|
||||
}
|
||||
for (int i = 0; i < domains.size(); ++i) {
|
||||
int (*action_func)(const char*);
|
||||
const char *action_str;
|
||||
switch (action) {
|
||||
case 0:
|
||||
action_func = sepol_create;
|
||||
action_str = "create";
|
||||
break;
|
||||
case 1:
|
||||
action_func = sepol_permissive;
|
||||
action_str = "permissive";
|
||||
break;
|
||||
case 2:
|
||||
action_func = sepol_enforce;
|
||||
action_str = "enforce";
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
if (action_func(domains[i]))
|
||||
fprintf(stderr, "Error in: %s %s\n", action_str, domains[i]);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Pattern 4: action { class } { attribute }
|
||||
static int parse_pattern_4(int action, char *stmt) {
|
||||
int state = 0;
|
||||
char *cur;
|
||||
Array<const char *> cls, attribute;
|
||||
while ((cur = strtok_r(nullptr, " ", &stmt)) != nullptr) {
|
||||
if (cur[0] == '*') cur = ALL;
|
||||
Array<const char *> *vec;
|
||||
switch (state) {
|
||||
case 0:
|
||||
vec = &cls;
|
||||
break;
|
||||
case 1:
|
||||
vec = &attribute;
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (cur == nullptr || cur[0] != '{') {
|
||||
vec->push_back(cur);
|
||||
} else {
|
||||
stmt[-1] = ' ';
|
||||
stmt = parse_bracket(cur, vec);
|
||||
if (stmt == nullptr)
|
||||
return 1;
|
||||
}
|
||||
++state;
|
||||
}
|
||||
if (state != 2) return 1;
|
||||
for(int i = 0; i < cls.size(); ++i)
|
||||
for (int j = 0; j < attribute.size(); ++j) {
|
||||
int (*action_func)(const char*, const char*);
|
||||
const char *action_str;
|
||||
switch (action) {
|
||||
case 0:
|
||||
action_func = sepol_attradd;
|
||||
action_str = "attradd";
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
if (action_func(cls[i], attribute[j]))
|
||||
fprintf(stderr, "Error in: %s %s %s\n", action_str, cls[i], attribute[j]);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Pattern 5: action source target class default (filename)
|
||||
static int parse_pattern_5(int action, char *stmt) {
|
||||
int state = 0;
|
||||
char *cur;
|
||||
char *source, *target, *cls, *def, *filename = nullptr;
|
||||
while ((cur = strtok_r(nullptr, " ", &stmt)) != nullptr) {
|
||||
switch(state) {
|
||||
case 0:
|
||||
source = cur;
|
||||
break;
|
||||
case 1:
|
||||
target = cur;
|
||||
break;
|
||||
case 2:
|
||||
cls = cur;
|
||||
break;
|
||||
case 3:
|
||||
def = cur;
|
||||
break;
|
||||
case 4:
|
||||
filename = cur;
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
++state;
|
||||
}
|
||||
if (state < 4) return 1;
|
||||
if (sepol_typetrans(source, target, cls, def, filename))
|
||||
fprintf(stderr, "Error in: typetrans %s %s %s %s %s\n", source, target, cls, def, filename ? filename : "");
|
||||
return 0;
|
||||
}
|
||||
|
||||
#define add_action(name, type, num) \
|
||||
else if (strcmp(name, action) == 0) { \
|
||||
if (parse_pattern_##type(num, remain)) \
|
||||
fprintf(stderr, "Syntax error in '%s'\n\n%s\n", orig, type_msg_##type); \
|
||||
}
|
||||
|
||||
static void parse_statement(char *statement) {
|
||||
char *action, *remain;
|
||||
|
||||
// strtok will modify the origin string, duplicate the statement for error messages
|
||||
char *orig = strdup(statement);
|
||||
|
||||
action = strtok_r(statement, " ", &remain);
|
||||
if (remain == nullptr) remain = &action[strlen(action)];
|
||||
|
||||
if (0) {}
|
||||
add_action("allow", 1, 0)
|
||||
add_action("deny", 1, 1)
|
||||
add_action("auditallow", 1, 2)
|
||||
add_action("auditdeny", 1, 3)
|
||||
add_action("allowxperm", 2, 0)
|
||||
add_action("auditallowxperm", 2, 1)
|
||||
add_action("dontauditxperm", 2, 2)
|
||||
add_action("create", 3, 0)
|
||||
add_action("permissive", 3, 1)
|
||||
add_action("enforce", 3, 2)
|
||||
add_action("attradd", 4, 0)
|
||||
add_action("typetrans", 5, 0)
|
||||
else { fprintf(stderr, "Unknown statement: '%s'\n\n", orig); }
|
||||
|
||||
free(orig);
|
||||
}
|
||||
|
||||
int magiskpolicy_main(int argc, char *argv[]) {
|
||||
const char *outfile = nullptr;
|
||||
bool magisk = false, live = false;
|
||||
|
||||
if (argc < 2) usage(argv[0]);
|
||||
int i = 1;
|
||||
for (; i < argc; ++i) {
|
||||
// Parse options
|
||||
if (argv[i][0] == '-' && argv[i][1] == '-') {
|
||||
if (strcmp(argv[i] + 2, "live") == 0)
|
||||
live = true;
|
||||
else if (strcmp(argv[i] + 2, "magisk") == 0)
|
||||
magisk = true;
|
||||
else if (strcmp(argv[i] + 2, "load") == 0) {
|
||||
if (argv[i + 1] == nullptr)
|
||||
usage(argv[0]);
|
||||
if (load_policydb(argv[i + 1])) {
|
||||
fprintf(stderr, "Cannot load policy from %s\n", argv[i + 1]);
|
||||
return 1;
|
||||
}
|
||||
++i;
|
||||
} else if (strcmp(argv[i] + 2, "compile-split") == 0) {
|
||||
if (compile_split_cil()) {
|
||||
fprintf(stderr, "Cannot compile split cil\n");
|
||||
return 1;
|
||||
}
|
||||
} else if (strcmp(argv[i] + 2, "save") == 0) {
|
||||
if (argv[i + 1] == nullptr)
|
||||
usage(argv[0]);
|
||||
outfile = argv[i + 1];
|
||||
++i;
|
||||
} else if (strcmp(argv[i] + 2, "help") == 0) {
|
||||
statements();
|
||||
} else {
|
||||
usage(argv[0]);
|
||||
}
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// Use current policy if nothing is loaded
|
||||
if (policydb == nullptr && load_policydb(SELINUX_POLICY)) {
|
||||
fprintf(stderr, "Cannot load policy from " SELINUX_POLICY "\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
for (; i < argc; ++i)
|
||||
parse_statement(argv[i]);
|
||||
|
||||
if (magisk)
|
||||
sepol_magisk_rules();
|
||||
|
||||
if (live && dump_policydb(SELINUX_LOAD)) {
|
||||
fprintf(stderr, "Cannot apply policy\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (outfile && dump_policydb(outfile)) {
|
||||
fprintf(stderr, "Cannot dump policy to %s\n", outfile);
|
||||
return 1;
|
||||
}
|
||||
|
||||
destroy_policydb();
|
||||
return 0;
|
||||
}
|
||||
@ -16,6 +16,10 @@
|
||||
#define SPLIT_PRECOMPILE NONPLAT_POLICY_DIR "precompiled_sepolicy"
|
||||
#define SPLIT_NONPLAT_VER NONPLAT_POLICY_DIR "plat_sepolicy_vers.txt"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
// policydb functions
|
||||
int load_policydb(const char *filename);
|
||||
int compile_split_cil();
|
||||
@ -23,21 +27,25 @@ int dump_policydb(const char *filename);
|
||||
void destroy_policydb();
|
||||
|
||||
// Handy functions
|
||||
int sepol_allow(char *s, char *t, char *c, char *p);
|
||||
int sepol_deny(char *s, char *t, char *c, char *p);
|
||||
int sepol_auditallow(char *s, char *t, char *c, char *p);
|
||||
int sepol_auditdeny(char *s, char *t, char *c, char *p);
|
||||
int sepol_typetrans(char *s, char *t, char *c, char *d, char *o);
|
||||
int sepol_allowxperm(char *s, char *t, char *c, char *range);
|
||||
int sepol_auditallowxperm(char *s, char *t, char *c, char *range);
|
||||
int sepol_dontauditxperm(char *s, char *t, char *c, char *range);
|
||||
int sepol_create(char *s);
|
||||
int sepol_permissive(char *s);
|
||||
int sepol_enforce(char *s);
|
||||
int sepol_attradd(char *s, char *a);
|
||||
int sepol_exists(char *source);
|
||||
int sepol_allow(const char *s, const char *t, const char *c, const char *p);
|
||||
int sepol_deny(const char *s, const char *t, const char *c, const char *p);
|
||||
int sepol_auditallow(const char *s, const char *t, const char *c, const char *p);
|
||||
int sepol_auditdeny(const char *s, const char *t, const char *c, const char *p);
|
||||
int sepol_typetrans(const char *s, const char *t, const char *c, const char *d, const char *o);
|
||||
int sepol_allowxperm(const char *s, const char *t, const char *c, const char *range);
|
||||
int sepol_auditallowxperm(const char *s, const char *t, const char *c, const char *range);
|
||||
int sepol_dontauditxperm(const char *s, const char *t, const char *c, const char *range);
|
||||
int sepol_create(const char *s);
|
||||
int sepol_permissive(const char *s);
|
||||
int sepol_enforce(const char *s);
|
||||
int sepol_attradd(const char *s, const char *a);
|
||||
int sepol_exists(const char *source);
|
||||
|
||||
// Built in rules
|
||||
void sepol_magisk_rules();
|
||||
|
||||
#ifdef __cplusplus
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
#include "magiskpolicy.h"
|
||||
#include "sepolicy.h"
|
||||
|
||||
static void allowSuClient(char *target) {
|
||||
static void allowSuClient(const char *target) {
|
||||
if (!sepol_exists(target))
|
||||
return;
|
||||
sepol_allow(target, SEPOL_PROC_DOMAIN, "unix_stream_socket", "connectto");
|
||||
@ -22,7 +22,6 @@
|
||||
#include "utils.h"
|
||||
#include "magiskpolicy.h"
|
||||
#include "sepolicy.h"
|
||||
#include "vector.h"
|
||||
|
||||
policydb_t *policydb = NULL;
|
||||
extern int policydb_index_decls(sepol_handle_t * handle, policydb_t * p);
|
||||
@ -36,7 +35,7 @@ static void *cmalloc(size_t s) {
|
||||
return t;
|
||||
}
|
||||
|
||||
static int get_attr(char *type, int value) {
|
||||
static int get_attr(const char *type, int value) {
|
||||
type_datum_t *attr = hashtab_search(policydb->p_types.table, type);
|
||||
if (!attr)
|
||||
return 1;
|
||||
@ -47,7 +46,7 @@ static int get_attr(char *type, int value) {
|
||||
return !! ebitmap_get_bit(&policydb->attr_type_map[attr->s.value-1], value-1);
|
||||
}
|
||||
|
||||
static int get_attr_id(char *type) {
|
||||
static int get_attr_id(const char *type) {
|
||||
type_datum_t *attr = hashtab_search(policydb->p_types.table, type);
|
||||
if (!attr)
|
||||
return 1;
|
||||
@ -58,7 +57,7 @@ static int get_attr_id(char *type) {
|
||||
return attr->s.value;
|
||||
}
|
||||
|
||||
static int set_attr(char *type, int value) {
|
||||
static int set_attr(const char *type, int value) {
|
||||
type_datum_t *attr = hashtab_search(policydb->p_types.table, type);
|
||||
if (!attr)
|
||||
return 1;
|
||||
@ -364,7 +363,7 @@ void destroy_policydb() {
|
||||
policydb = NULL;
|
||||
}
|
||||
|
||||
int create_domain(char *d) {
|
||||
int create_domain(const char *d) {
|
||||
symtab_datum_t *src = hashtab_search(policydb->p_types.table, d);
|
||||
if(src) {
|
||||
fprintf(stderr, "Domain %s already exists\n", d);
|
||||
@ -414,7 +413,7 @@ int create_domain(char *d) {
|
||||
return set_attr("domain", value);
|
||||
}
|
||||
|
||||
int set_domain_state(char* s, int state) {
|
||||
int set_domain_state(const char *s, int state) {
|
||||
type_datum_t *type;
|
||||
hashtab_ptr_t cur;
|
||||
if (s == NULL) {
|
||||
@ -440,7 +439,7 @@ int set_domain_state(char* s, int state) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
int add_transition(char *s, char *t, char *c, char *d) {
|
||||
int add_transition(const char *s, const char *t, const char *c, const char *d) {
|
||||
type_datum_t *src, *tgt, *def;
|
||||
class_datum_t *cls;
|
||||
|
||||
@ -491,7 +490,8 @@ int add_transition(char *s, char *t, char *c, char *d) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
int add_file_transition(char *s, char *t, char *c, char *d, char* filename) {
|
||||
int add_file_transition(const char *s, const char *t, const char *c, const char *d,
|
||||
const char *filename) {
|
||||
type_datum_t *src, *tgt, *def;
|
||||
class_datum_t *cls;
|
||||
|
||||
@ -520,7 +520,7 @@ int add_file_transition(char *s, char *t, char *c, char *d, char* filename) {
|
||||
trans_key.stype = src->s.value;
|
||||
trans_key.ttype = tgt->s.value;
|
||||
trans_key.tclass = cls->s.value;
|
||||
trans_key.name = filename;
|
||||
trans_key.name = (char *) filename;
|
||||
|
||||
filename_trans_datum_t *trans_datum;
|
||||
trans_datum = hashtab_search(policydb->p_types.table, (hashtab_key_t) &trans_key);
|
||||
@ -535,7 +535,7 @@ int add_file_transition(char *s, char *t, char *c, char *d, char* filename) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
int add_typeattribute(char *domainS, char *attr) {
|
||||
int add_typeattribute(const char *domainS, const char *attr) {
|
||||
type_datum_t *domain;
|
||||
|
||||
domain = hashtab_search(policydb->p_types.table, domainS);
|
||||
@ -564,7 +564,7 @@ int add_typeattribute(char *domainS, char *attr) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
int add_rule(char *s, char *t, char *c, char *p, int effect, int not) {
|
||||
int add_rule(const char *s, const char *t, const char *c, const char *p, int effect, int n) {
|
||||
type_datum_t *src = NULL, *tgt = NULL;
|
||||
class_datum_t *cls = NULL;
|
||||
perm_datum_t *perm = NULL;
|
||||
@ -610,10 +610,11 @@ int add_rule(char *s, char *t, char *c, char *p, int effect, int not) {
|
||||
}
|
||||
}
|
||||
}
|
||||
return add_rule_auto(src, tgt, cls, perm, effect, not);
|
||||
return add_rule_auto(src, tgt, cls, perm, effect, n);
|
||||
}
|
||||
|
||||
int add_xperm_rule(char *s, char *t, char *c, char *range, int effect, int not) {
|
||||
int add_xperm_rule(const char *s, const char *t, const char *c, const char *range, int effect,
|
||||
int n) {
|
||||
type_datum_t *src = NULL, *tgt = NULL;
|
||||
class_datum_t *cls = NULL;
|
||||
|
||||
@ -655,5 +656,5 @@ int add_xperm_rule(char *s, char *t, char *c, char *range, int effect, int not)
|
||||
high = 0xFFFF;
|
||||
}
|
||||
|
||||
return add_xperm_rule_auto(src, tgt, cls, low, high, effect, not);
|
||||
return add_xperm_rule_auto(src, tgt, cls, low, high, effect, n);
|
||||
}
|
||||
|
||||
@ -6,6 +6,10 @@
|
||||
|
||||
#include <sepol/policydb/policydb.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
// Global policydb
|
||||
extern policydb_t *policydb;
|
||||
|
||||
@ -15,12 +19,17 @@ extern policydb_t *policydb;
|
||||
for (*ptr = table->htable[_i]; *ptr != NULL; *ptr = (*ptr)->next)
|
||||
|
||||
// sepolicy manipulation functions
|
||||
int create_domain(char *d);
|
||||
int set_domain_state(char* s, int state);
|
||||
int add_transition(char *s, char *t, char *c, char *d);
|
||||
int add_file_transition(char *s, char *t, char *c, char *d, char* filename);
|
||||
int add_typeattribute(char *domainS, char *attr);
|
||||
int add_rule(char *s, char *t, char *c, char *p, int effect, int not);
|
||||
int add_xperm_rule(char *s, char *t, char *c, char *range, int effect, int not);
|
||||
int create_domain(const char *d);
|
||||
int set_domain_state(const char *s, int state);
|
||||
int add_transition(const char *s, const char *t, const char *c, const char *d);
|
||||
int add_file_transition(const char *s, const char *t, const char *c, const char *d,
|
||||
const char *filename);
|
||||
int add_typeattribute(const char *domainS, const char *attr);
|
||||
int add_rule(const char *s, const char *t, const char *c, const char *p, int effect, int n);
|
||||
int add_xperm_rule(const char *s, const char *t, const char *c, const char *range, int effect, int n);
|
||||
|
||||
#ifdef __cplusplus
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* init.c - Pre-init Magisk support
|
||||
/* init.cpp - Pre-init Magisk support
|
||||
*
|
||||
* This code has to be compiled statically to work properly.
|
||||
*
|
||||
@ -21,7 +21,6 @@
|
||||
*/
|
||||
|
||||
|
||||
#define _GNU_SOURCE
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
@ -42,8 +41,9 @@
|
||||
#include "binaries_arch.h"
|
||||
|
||||
#include "magiskrc.h"
|
||||
#include "utils.h"
|
||||
#include "magisk.h"
|
||||
#include "magiskpolicy.h"
|
||||
#include "utils.h"
|
||||
#include "flags.h"
|
||||
|
||||
#define DEFAULT_DT_DIR "/proc/device-tree/firmware/android"
|
||||
@ -223,9 +223,9 @@ static int patch_sepolicy() {
|
||||
|
||||
if (init_patch) {
|
||||
// Force init to load /sepolicy
|
||||
void *addr;
|
||||
uint8_t *addr;
|
||||
size_t size;
|
||||
mmap_rw("/init", &addr, &size);
|
||||
mmap_rw("/init", (void **) &addr, &size);
|
||||
for (int i = 0; i < size; ++i) {
|
||||
if (memcmp(addr + i, SPLIT_PLAT_CIL, sizeof(SPLIT_PLAT_CIL) - 1) == 0) {
|
||||
memcpy(addr + i + sizeof(SPLIT_PLAT_CIL) - 4, "xxx", 3);
|
||||
@ -238,7 +238,7 @@ static int patch_sepolicy() {
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int unxz(int fd, const void *buf, size_t size) {
|
||||
static int unxz(int fd, const uint8_t *buf, size_t size) {
|
||||
uint8_t out[8192];
|
||||
xz_crc32_init();
|
||||
struct xz_dec *dec = xz_dec_init(XZ_DYNALLOC, 1 << 26);
|
||||
@ -297,10 +297,10 @@ static int dump_magiskrc(const char *path, mode_t mode) {
|
||||
}
|
||||
|
||||
static void patch_socket_name(const char *path) {
|
||||
void *buf;
|
||||
uint8_t *buf;
|
||||
char name[sizeof(MAIN_SOCKET)];
|
||||
size_t size;
|
||||
mmap_rw(path, &buf, &size);
|
||||
mmap_rw(path, (void **) &buf, &size);
|
||||
for (int i = 0; i < size; ++i) {
|
||||
if (memcmp(buf + i, MAIN_SOCKET, sizeof(MAIN_SOCKET)) == 0) {
|
||||
gen_rand_str(name, sizeof(name));
|
||||
@ -364,8 +364,8 @@ int main(int argc, char *argv[]) {
|
||||
* ***********/
|
||||
|
||||
int root = open("/", O_RDONLY | O_CLOEXEC);
|
||||
int mnt_system = 0;
|
||||
int mnt_vendor = 0;
|
||||
bool mnt_system = false;
|
||||
bool mnt_vendor = false;
|
||||
|
||||
if (cmd.skip_initramfs) {
|
||||
// Clear rootfs
|
||||
@ -407,21 +407,26 @@ int main(int argc, char *argv[]) {
|
||||
} else if (read_fstab_dt(&cmd, "system", partname) == 0) {
|
||||
setup_block(&dev, partname);
|
||||
xmount(dev.path, "/system", "ext4", MS_RDONLY, NULL);
|
||||
mnt_system = 1;
|
||||
mnt_system = true;
|
||||
}
|
||||
|
||||
if (read_fstab_dt(&cmd, "vendor", partname) == 0) {
|
||||
setup_block(&dev, partname);
|
||||
xmount(dev.path, "/vendor", "ext4", MS_RDONLY, NULL);
|
||||
mnt_vendor = 1;
|
||||
mnt_vendor = true;
|
||||
}
|
||||
|
||||
/* ****************
|
||||
* Ramdisk Patches
|
||||
* ****************/
|
||||
|
||||
int fd;
|
||||
bool injected;
|
||||
FILE *fp;
|
||||
char tok[4096];
|
||||
|
||||
// Handle ramdisk overlays
|
||||
int fd = open("/overlay", O_RDONLY | O_CLOEXEC);
|
||||
fd = open("/overlay", O_RDONLY | O_CLOEXEC);
|
||||
if (fd >= 0) {
|
||||
mv_dir(fd, root);
|
||||
close(fd);
|
||||
@ -429,17 +434,17 @@ int main(int argc, char *argv[]) {
|
||||
}
|
||||
|
||||
// Patch init.rc to load magisk scripts
|
||||
int injected = 0;
|
||||
char tok[4096];
|
||||
FILE *fp = xfopen("/init.rc", "r");
|
||||
|
||||
injected = false;
|
||||
fp = xfopen("/init.rc", "r");
|
||||
fd = creat("/init.rc.new", 0750);
|
||||
while(fgets(tok, sizeof(tok), fp)) {
|
||||
if (!injected && strncmp(tok, "import", 6) == 0) {
|
||||
if (strstr(tok, "init.magisk.rc")) {
|
||||
injected = 1;
|
||||
injected = true;
|
||||
} else {
|
||||
xwrite(fd, "import /init.magisk.rc\n", 23);
|
||||
injected = 1;
|
||||
injected = true;
|
||||
}
|
||||
} else if (strstr(tok, "selinux.reload_policy")) {
|
||||
// Do not allow sepolicy patch
|
||||
@ -9,7 +9,6 @@ LOCAL_SRC_FILES := \
|
||||
selinux.cpp \
|
||||
logging.cpp \
|
||||
xwrap.cpp \
|
||||
CharArray.cpp \
|
||||
vector.c
|
||||
CharArray.cpp
|
||||
|
||||
include $(BUILD_STATIC_LIBRARY)
|
||||
|
||||
@ -1,38 +0,0 @@
|
||||
/* vector.h - A simple vector implementation in c
|
||||
*/
|
||||
|
||||
#ifndef _VECTOR_H_
|
||||
#define _VECTOR_H_
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
struct vector {
|
||||
unsigned size;
|
||||
unsigned cap;
|
||||
void **data;
|
||||
};
|
||||
|
||||
void vec_init(struct vector *v);
|
||||
void vec_push_back(struct vector *v, void *p);
|
||||
void vec_push_back_all(struct vector *v, void *p, ...);
|
||||
void *vec_pop_back(struct vector *v);
|
||||
void vec_sort(struct vector *v, int (*compar)(const void *, const void *));
|
||||
void vec_destroy(struct vector *v);
|
||||
void vec_deep_destroy(struct vector *v);
|
||||
void vec_dup(struct vector *v, struct vector *vv);
|
||||
|
||||
#define vec_size(v) (v)->size
|
||||
#define vec_cap(v) (v)->cap
|
||||
#define vec_entry(v) (v)->data
|
||||
/* Usage: vec_for_each(vector *v, void *e) */
|
||||
#define vec_for_each(v, e) \
|
||||
e = v ? (v)->data[0] : NULL; \
|
||||
for (int _ = 0; v && _ < (v)->size; ++_, e = (v)->data[_])
|
||||
|
||||
#define vec_for_each_r(v, e) \
|
||||
e = (v && (v)->size > 0) ? (v)->data[(v)->size - 1] : NULL; \
|
||||
for (int _ = ((int) (v)->size) - 1; v && _ >= 0; --_, e = (v)->data[_])
|
||||
|
||||
#define vec_cur(v) vec_entry(v)[_]
|
||||
|
||||
#endif
|
||||
@ -1,91 +0,0 @@
|
||||
/* vector.c - A simple vector implementation in c
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <stdarg.h>
|
||||
|
||||
#include "vector.h"
|
||||
|
||||
void vec_init(struct vector *v) {
|
||||
if (v == NULL) return;
|
||||
vec_size(v) = 0;
|
||||
vec_cap(v) = 1;
|
||||
vec_entry(v) = malloc(sizeof(void*));
|
||||
}
|
||||
|
||||
void vec_push_back(struct vector *v, void *p) {
|
||||
if (v == NULL) return;
|
||||
if (vec_size(v) == vec_cap(v)) {
|
||||
vec_cap(v) *= 2;
|
||||
vec_entry(v) = realloc(vec_entry(v), sizeof(void*) * vec_cap(v));
|
||||
}
|
||||
vec_entry(v)[vec_size(v)] = p;
|
||||
++vec_size(v);
|
||||
}
|
||||
|
||||
void vec_push_back_all(struct vector *v, void *p, ...) {
|
||||
va_list argv;
|
||||
va_start(argv, p);
|
||||
vec_push_back(v, p);
|
||||
for (void *arg = va_arg(argv, char*); arg; arg = va_arg(argv, char*))
|
||||
vec_push_back(v, arg);
|
||||
va_end(argv);
|
||||
}
|
||||
|
||||
void *vec_pop_back(struct vector *v) {
|
||||
void *ret = vec_entry(v)[vec_size(v) - 1];
|
||||
--vec_size(v);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int (*cmp)(const void *, const void *);
|
||||
|
||||
static int vec_comp(const void *a, const void *b) {
|
||||
void *aa = *((void **)a), *bb = *((void **)b);
|
||||
if (aa == NULL && bb == NULL) return 0;
|
||||
else if (aa == NULL) return 1;
|
||||
else if (bb == NULL) return -1;
|
||||
else return cmp ? cmp(aa, bb) : 0;
|
||||
}
|
||||
|
||||
void vec_sort(struct vector *v, int (*compar)(const void *, const void *)) {
|
||||
if (v == NULL) return;
|
||||
cmp = compar;
|
||||
qsort(vec_entry(v), vec_size(v), sizeof(void*), vec_comp);
|
||||
void *e;
|
||||
vec_for_each_r(v, e) {
|
||||
if (e) break;
|
||||
--vec_size(v);
|
||||
}
|
||||
}
|
||||
|
||||
/* Will cleanup only the vector itself
|
||||
* use in cases when each element requires special cleanup
|
||||
*/
|
||||
void vec_destroy(struct vector *v) {
|
||||
if (v == NULL) return;
|
||||
vec_size(v) = 0;
|
||||
vec_cap(v) = 0;
|
||||
free(vec_entry(v));
|
||||
vec_entry(v) = NULL; // Prevent double destroy segfault
|
||||
}
|
||||
|
||||
/* Will cleanup each element AND the vector itself
|
||||
* Shall be the general case
|
||||
*/
|
||||
void vec_deep_destroy(struct vector *v) {
|
||||
if (v == NULL) return;
|
||||
void *e;
|
||||
vec_for_each(v, e) {
|
||||
free(e);
|
||||
}
|
||||
vec_destroy(v);
|
||||
}
|
||||
|
||||
void vec_dup(struct vector *v, struct vector *vv) {
|
||||
vec_size(vv) = vec_size(v);
|
||||
vec_cap(vv) = vec_cap(v);
|
||||
vec_entry(vv) = malloc(sizeof(void*) * vec_cap(v));
|
||||
memcpy(vec_entry(vv), vec_entry(v), sizeof(void*) * vec_cap(v));
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user