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Cleanup some implementations

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topjohnwu 2020-05-24 04:16:40 -07:00
parent 51eeb89f67
commit 951273f8ef
6 changed files with 263 additions and 288 deletions
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34
native/jni/include/magiskpolicy.hpp
View File

@ -18,35 +18,35 @@ public:
static sepolicy *compile_split();
// External APIs
int to_file(c_str file);
bool to_file(c_str file);
void parse_statement(c_str stmt);
void load_rule_file(c_str file);
// Operation on types
int create(c_str type);
int permissive(c_str type);
int enforce(c_str type);
int typeattribute(c_str type, c_str attr);
int exists(c_str type);
bool create(c_str type);
bool permissive(c_str type);
bool enforce(c_str type);
bool typeattribute(c_str type, c_str attr);
bool exists(c_str type);
// Access vector rules
int allow(c_str src, c_str tgt, c_str cls, c_str perm);
int deny(c_str src, c_str tgt, c_str cls, c_str perm);
int auditallow(c_str src, c_str tgt, c_str cls, c_str perm);
int dontaudit(c_str src, c_str tgt, c_str cls, c_str perm);
bool allow(c_str src, c_str tgt, c_str cls, c_str perm);
bool deny(c_str src, c_str tgt, c_str cls, c_str perm);
bool auditallow(c_str src, c_str tgt, c_str cls, c_str perm);
bool dontaudit(c_str src, c_str tgt, c_str cls, c_str perm);
// Extended permissions access vector rules
int allowxperm(c_str src, c_str tgt, c_str cls, c_str range);
int auditallowxperm(c_str src, c_str tgt, c_str cls, c_str range);
int dontauditxperm(c_str src, c_str tgt, c_str cls, c_str range);
bool allowxperm(c_str src, c_str tgt, c_str cls, c_str range);
bool auditallowxperm(c_str src, c_str tgt, c_str cls, c_str range);
bool dontauditxperm(c_str src, c_str tgt, c_str cls, c_str range);
// Type rules
int type_transition(c_str s, c_str t, c_str c, c_str d, c_str o = nullptr);
int type_change(c_str src, c_str tgt, c_str cls, c_str def);
int type_member(c_str src, c_str tgt, c_str cls, c_str def);
bool type_transition(c_str src, c_str tgt, c_str cls, c_str def, c_str obj = nullptr);
bool type_change(c_str src, c_str tgt, c_str cls, c_str def);
bool type_member(c_str src, c_str tgt, c_str cls, c_str def);
// File system labeling
int genfscon(c_str fs_name, c_str path, c_str ctx);
bool genfscon(c_str fs_name, c_str path, c_str ctx);
// Magisk
void magisk_rules();

4
native/jni/magiskpolicy/magiskpolicy.cpp
View File

@ -110,12 +110,12 @@ int magiskpolicy_main(int argc, char *argv[]) {
for (; i < argc; ++i)
sepol->parse_statement(argv[i]);
if (live && sepol->to_file(SELINUX_LOAD)) {
if (live && !sepol->to_file(SELINUX_LOAD)) {
fprintf(stderr, "Cannot apply policy\n");
return 1;
}
if (out_file && sepol->to_file(out_file)) {
if (out_file && !sepol->to_file(out_file)) {
fprintf(stderr, "Cannot dump policy to %s\n", out_file);
return 1;
}

8
native/jni/magiskpolicy/policydb.cpp
View File

@ -189,7 +189,7 @@ sepolicy::~sepolicy() {
free(db);
}
int sepolicy::to_file(const char *file) {
bool sepolicy::to_file(const char *file) {
uint8_t *data;
size_t len;
@ -205,14 +205,14 @@ int sepolicy::to_file(const char *file) {
pf.fp = fp.get();
if (policydb_write(db, &pf)) {
LOGE("Fail to create policy image\n");
return 1;
return false;
}
int fd = xopen(file, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 0644);
if (fd < 0)
return 1;
return false;
xwrite(fd, data, len);
close(fd);
return 0;
return true;
}

481
native/jni/magiskpolicy/sepolicy.cpp
View File

@ -37,7 +37,6 @@ struct auto_cast_wrapper
auto_cast_wrapper(T *ptr) : ptr(ptr) {}
template <typename U>
operator U*() const { return static_cast<U*>(ptr); }
private:
T *ptr;
};
@ -152,42 +151,21 @@ avtab_ptr_t sepol_impl::get_avtab_node(avtab_key_t *key, avtab_extended_perms_t
return node;
}
int sepol_impl::add_avrule(avtab_key_t *key, int val, bool n) {
avtab_ptr_t node = get_avtab_node(key, nullptr);
if (n) {
if (val < 0)
node->datum.data = 0U;
else
node->datum.data &= ~(1U << (val - 1));
} else {
if (val < 0)
node->datum.data = ~0U;
else
node->datum.data |= 1U << (val - 1);
}
check_avtab_node(node);
return 0;
}
int sepol_impl::add_rule(type_datum_t *src, type_datum_t *tgt, class_datum_t *cls, perm_datum_t *perm, int effect, bool n) {
int ret = 0;
void sepol_impl::add_rule(type_datum_t *src, type_datum_t *tgt, class_datum_t *cls, perm_datum_t *perm, int effect, bool n) {
if (src == nullptr) {
hashtab_for_each(db->p_types.table, [&](hashtab_ptr_t node) {
src = auto_cast(node->datum);
ret |= add_rule(src, tgt, cls, perm, effect, n);
add_rule(src, tgt, cls, perm, effect, n);
});
} else if (tgt == nullptr) {
hashtab_for_each(db->p_types.table, [&](hashtab_ptr_t node) {
tgt = auto_cast(node->datum);
ret |= add_rule(src, tgt, cls, perm, effect, n);
add_rule(src, tgt, cls, perm, effect, n);
});
} else if (cls == nullptr) {
hashtab_for_each(db->p_classes.table, [&](hashtab_ptr_t node) {
cls = auto_cast(node->datum);
ret |= add_rule(src, tgt, cls, perm, effect, n);
add_rule(src, tgt, cls, perm, effect, n);
});
} else {
avtab_key_t key;
@ -195,13 +173,24 @@ int sepol_impl::add_rule(type_datum_t *src, type_datum_t *tgt, class_datum_t *cl
key.target_type = tgt->s.value;
key.target_class = cls->s.value;
key.specified = effect;
return add_avrule(&key, perm ? perm->s.value : -1, n);
}
return ret;
avtab_ptr_t node = get_avtab_node(&key, nullptr);
if (n) {
if (perm)
node->datum.data &= ~(1U << (perm->s.value - 1));
else
node->datum.data = 0U;
} else {
if (perm)
node->datum.data |= 1U << (perm->s.value - 1);
else
node->datum.data = ~0U;
}
check_avtab_node(node);
}
}
int sepol_impl::add_rule(const char *s, const char *t, const char *c, const char *p, int effect, bool n) {
bool sepol_impl::add_rule(const char *s, const char *t, const char *c, const char *p, int effect, bool n) {
type_datum_t *src = nullptr, *tgt = nullptr;
class_datum_t *cls = nullptr;
perm_datum_t *perm = nullptr;
@ -210,7 +199,7 @@ int sepol_impl::add_rule(const char *s, const char *t, const char *c, const char
src = hashtab_find(db->p_types.table, s);
if (src == nullptr) {
LOGW("source type %s does not exist\n", s);
return 1;
return false;
}
}
@ -218,7 +207,7 @@ int sepol_impl::add_rule(const char *s, const char *t, const char *c, const char
tgt = hashtab_find(db->p_types.table, t);
if (tgt == nullptr) {
LOGW("target type %s does not exist\n", t);
return 1;
return false;
}
}
@ -226,14 +215,14 @@ int sepol_impl::add_rule(const char *s, const char *t, const char *c, const char
cls = hashtab_find(db->p_classes.table, c);
if (cls == nullptr) {
LOGW("class %s does not exist\n", c);
return 1;
return false;
}
}
if (p) {
if (c == nullptr) {
LOGW("No class is specified, cannot add perm [%s] \n", p);
return 1;
return false;
}
perm = hashtab_find(cls->permissions.table, p);
@ -242,70 +231,32 @@ int sepol_impl::add_rule(const char *s, const char *t, const char *c, const char
}
if (perm == nullptr) {
LOGW("perm %s does not exist in class %s\n", p, c);
return 1;
return false;
}
}
return add_rule(src, tgt, cls, perm, effect, n);
add_rule(src, tgt, cls, perm, effect, n);
return true;
}
#define ioctl_driver(x) (x>>8 & 0xFF)
#define ioctl_func(x) (x & 0xFF)
int sepol_impl::add_avxrule(avtab_key_t *key, uint16_t low, uint16_t high, bool n) {
avtab_datum_t *datum;
avtab_extended_perms_t xperms;
memset(&xperms, 0, sizeof(xperms));
if (ioctl_driver(low) != ioctl_driver(high)) {
xperms.specified = AVTAB_XPERMS_IOCTLDRIVER;
xperms.driver = 0;
} else {
xperms.specified = AVTAB_XPERMS_IOCTLFUNCTION;
xperms.driver = ioctl_driver(low);
}
if (xperms.specified == AVTAB_XPERMS_IOCTLDRIVER) {
for (int i = ioctl_driver(low); i <= ioctl_driver(high); ++i) {
if (n)
xperm_clear(i, xperms.perms);
else
xperm_set(i, xperms.perms);
}
} else {
for (int i = ioctl_func(low); i <= ioctl_func(high); ++i) {
if (n)
xperm_clear(i, xperms.perms);
else
xperm_set(i, xperms.perms);
}
}
datum = &get_avtab_node(key, &xperms)->datum;
if (datum->xperms == nullptr)
datum->xperms = auto_cast(xmalloc(sizeof(xperms)));
memcpy(datum->xperms, &xperms, sizeof(xperms));
return 0;
}
int sepol_impl::add_xperm_rule(type_datum_t *src, type_datum_t *tgt,
void sepol_impl::add_xperm_rule(type_datum_t *src, type_datum_t *tgt,
class_datum_t *cls, uint16_t low, uint16_t high, int effect, bool n) {
int ret = 0;
if (src == nullptr) {
hashtab_for_each(db->p_types.table, [&](hashtab_ptr_t node) {
src = auto_cast(node->datum);
ret |= add_xperm_rule(src, tgt, cls, low, high, effect, n);
add_xperm_rule(src, tgt, cls, low, high, effect, n);
});
} else if (tgt == nullptr) {
hashtab_for_each(db->p_types.table, [&](hashtab_ptr_t node) {
tgt = auto_cast(node->datum);
ret |= add_xperm_rule(src, tgt, cls, low, high, effect, n);
add_xperm_rule(src, tgt, cls, low, high, effect, n);
});
} else if (cls == nullptr) {
hashtab_for_each(db->p_classes.table, [&](hashtab_ptr_t node) {
tgt = auto_cast(node->datum);
ret |= add_xperm_rule(src, tgt, cls, low, high, effect, n);
add_xperm_rule(src, tgt, cls, low, high, effect, n);
});
} else {
avtab_key_t key;
@ -313,12 +264,45 @@ int sepol_impl::add_xperm_rule(type_datum_t *src, type_datum_t *tgt,
key.target_type = tgt->s.value;
key.target_class = cls->s.value;
key.specified = effect;
return add_avxrule(&key, low, high, n);
avtab_datum_t *datum;
avtab_extended_perms_t xperms;
memset(&xperms, 0, sizeof(xperms));
if (ioctl_driver(low) != ioctl_driver(high)) {
xperms.specified = AVTAB_XPERMS_IOCTLDRIVER;
xperms.driver = 0;
} else {
xperms.specified = AVTAB_XPERMS_IOCTLFUNCTION;
xperms.driver = ioctl_driver(low);
}
if (xperms.specified == AVTAB_XPERMS_IOCTLDRIVER) {
for (int i = ioctl_driver(low); i <= ioctl_driver(high); ++i) {
if (n)
xperm_clear(i, xperms.perms);
else
xperm_set(i, xperms.perms);
}
} else {
for (int i = ioctl_func(low); i <= ioctl_func(high); ++i) {
if (n)
xperm_clear(i, xperms.perms);
else
xperm_set(i, xperms.perms);
}
}
datum = &get_avtab_node(&key, &xperms)->datum;
if (datum->xperms == nullptr)
datum->xperms = auto_cast(xmalloc(sizeof(xperms)));
memcpy(datum->xperms, &xperms, sizeof(xperms));
}
return ret;
}
int sepol_impl::add_xperm_rule(const char *s, const char *t, const char *c, const char *range, int effect, bool n) {
bool sepol_impl::add_xperm_rule(const char *s, const char *t, const char *c, const char *range, int effect, bool n) {
type_datum_t *src = nullptr, *tgt = nullptr;
class_datum_t *cls = nullptr;
@ -326,7 +310,7 @@ int sepol_impl::add_xperm_rule(const char *s, const char *t, const char *c, cons
src = hashtab_find(db->p_types.table, s);
if (src == nullptr) {
LOGW("source type %s does not exist\n", s);
return 1;
return false;
}
}
@ -334,7 +318,7 @@ int sepol_impl::add_xperm_rule(const char *s, const char *t, const char *c, cons
tgt = hashtab_find(db->p_types.table, t);
if (tgt == nullptr) {
LOGW("target type %s does not exist\n", t);
return 1;
return false;
}
}
@ -342,7 +326,7 @@ int sepol_impl::add_xperm_rule(const char *s, const char *t, const char *c, cons
cls = hashtab_find(db->p_classes.table, c);
if (cls == nullptr) {
LOGW("class %s does not exist\n", c);
return 1;
return false;
}
}
@ -360,173 +344,33 @@ int sepol_impl::add_xperm_rule(const char *s, const char *t, const char *c, cons
high = 0xFFFF;
}
return add_xperm_rule(src, tgt, cls, low, high, effect, n);
add_xperm_rule(src, tgt, cls, low, high, effect, n);
return true;
}
int sepol_impl::create_domain(const char *type_name) {
symtab_datum_t *src = hashtab_find(db->p_types.table, type_name);
if (src) {
LOGW("Type %s already exists\n", type_name);
return 0;
}
type_datum_t *type = auto_cast(xmalloc(sizeof(type_datum_t)));
type_datum_init(type);
type->primary = 1;
type->flavor = TYPE_TYPE;
uint32_t value = 0;
symtab_insert(db, SYM_TYPES, strdup(type_name), type, SCOPE_DECL, 1, &value);
type->s.value = value;
if (ebitmap_set_bit(&db->global->branch_list->declared.scope[SYM_TYPES], value - 1, 1)) {
return 1;
}
db->type_attr_map = auto_cast(xrealloc(db->type_attr_map, sizeof(ebitmap_t) * db->p_types.nprim));
db->attr_type_map = auto_cast(xrealloc(db->attr_type_map, sizeof(ebitmap_t) * db->p_types.nprim));
ebitmap_init(&db->type_attr_map[value - 1]);
ebitmap_init(&db->attr_type_map[value - 1]);
ebitmap_set_bit(&db->type_attr_map[value - 1], value - 1, 1);
src = hashtab_find(db->p_types.table, type_name);
if (!src)
return 1;
if (policydb_index_decls(nullptr, db))
return 1;
if (policydb_index_classes(db))
return 1;
if (policydb_index_others(nullptr, db, 0))
return 1;
// Add the domain to all roles
for (unsigned i = 0; i < db->p_roles.nprim; ++i) {
// Not sure all those three calls are needed
ebitmap_set_bit(&db->role_val_to_struct[i]->types.negset, value - 1, 0);
ebitmap_set_bit(&db->role_val_to_struct[i]->types.types, value - 1, 1);
type_set_expand(&db->role_val_to_struct[i]->types, &db->role_val_to_struct[i]->cache, db, 0);
}
return set_attr("domain", value);
}
int sepol_impl::set_domain_state(const char *s, bool permissive) {
type_datum_t *type;
if (s == nullptr) {
hashtab_for_each(db->p_types.table, [&](hashtab_ptr_t node) {
type = auto_cast(node->datum);
if (ebitmap_set_bit(&db->permissive_map, type->s.value, permissive))
LOGW("Could not set bit in permissive map\n");
});
} else {
type = hashtab_find(db->p_types.table, s);
if (type == nullptr) {
LOGW("type %s does not exist\n", s);
return 1;
}
if (ebitmap_set_bit(&db->permissive_map, type->s.value, permissive)) {
LOGW("Could not set bit in permissive map\n");
return 1;
}
}
return 0;
}
int sepol_impl::add_filename_trans(const char *s, const char *t, const char *c, const char *d, const char *o) {
type_datum_t *src, *tgt, *def;
class_datum_t *cls;
filename_trans_datum_t *trans;
src = hashtab_find(db->p_types.table, s);
if (src == nullptr) {
LOGW("source type %s does not exist\n", s);
return 1;
}
tgt = hashtab_find(db->p_types.table, t);
if (tgt == nullptr) {
LOGW("target type %s does not exist\n", t);
return 1;
}
cls = hashtab_find(db->p_classes.table, c);
if (cls == nullptr) {
LOGW("class %s does not exist\n", c);
return 1;
}
def = hashtab_find(db->p_types.table, d);
if (def == nullptr) {
LOGW("default type %s does not exist\n", d);
return 1;
}
filename_trans_t trans_key;
trans_key.stype = src->s.value;
trans_key.ttype = tgt->s.value;
trans_key.tclass = cls->s.value;
trans_key.name = (char *) o;
trans = hashtab_find(db->filename_trans, (hashtab_key_t) &trans_key);
if (trans == nullptr) {
trans = auto_cast(xcalloc(sizeof(*trans), 1));
hashtab_insert(db->filename_trans, (hashtab_key_t) &trans_key, trans);
}
// Overwrite existing
trans->otype = def->s.value;
return 0;
}
int sepol_impl::add_typeattribute(const char *type, const char *attr) {
type_datum_t *domain = hashtab_find(db->p_types.table, type);
if (domain == nullptr) {
LOGW("type %s does not exist\n", type);
return 1;
}
int attr_val = set_attr(attr, domain->s.value);
if (attr_val < 0)
return 1;
hashtab_for_each(db->p_classes.table, [&](hashtab_ptr_t node){
auto cls = static_cast<class_datum_t *>(node->datum);
for (constraint_node_t *n = cls->constraints; n ; n = n->next) {
for (constraint_expr_t *e = n->expr; e; e = e->next) {
if (e->expr_type == CEXPR_NAMES &&
ebitmap_get_bit(&e->type_names->types, attr_val - 1)) {
ebitmap_set_bit(&e->names, domain->s.value - 1, 1);
}
}
}
});
return 0;
}
int sepol_impl::add_type_rule(const char *s, const char *t, const char *c, const char *d, int effect) {
bool sepol_impl::add_type_rule(const char *s, const char *t, const char *c, const char *d, int effect) {
type_datum_t *src, *tgt, *def;
class_datum_t *cls;
src = hashtab_find(db->p_types.table, s);
if (src == nullptr) {
LOGW("source type %s does not exist\n", s);
return 1;
return false;
}
tgt = hashtab_find(db->p_types.table, t);
if (tgt == nullptr) {
LOGW("target type %s does not exist\n", t);
return 1;
return false;
}
cls = hashtab_find(db->p_classes.table, c);
if (cls == nullptr) {
LOGW("class %s does not exist\n", c);
return 1;
return false;
}
def = hashtab_find(db->p_types.table, d);
if (def == nullptr) {
LOGW("default type %s does not exist\n", d);
return 1;
return false;
}
avtab_key_t key;
@ -538,15 +382,59 @@ int sepol_impl::add_type_rule(const char *s, const char *t, const char *c, const
avtab_ptr_t node = get_avtab_node(&key, nullptr);
node->datum.data = def->s.value;
return 0;
return true;
}
int sepol_impl::add_genfscon(const char *fs_name, const char *path, const char *context) {
bool sepol_impl::add_filename_trans(const char *s, const char *t, const char *c, const char *d, const char *o) {
type_datum_t *src, *tgt, *def;
class_datum_t *cls;
filename_trans_datum_t *trans;
src = hashtab_find(db->p_types.table, s);
if (src == nullptr) {
LOGW("source type %s does not exist\n", s);
return false;
}
tgt = hashtab_find(db->p_types.table, t);
if (tgt == nullptr) {
LOGW("target type %s does not exist\n", t);
return false;
}
cls = hashtab_find(db->p_classes.table, c);
if (cls == nullptr) {
LOGW("class %s does not exist\n", c);
return false;
}
def = hashtab_find(db->p_types.table, d);
if (def == nullptr) {
LOGW("default type %s does not exist\n", d);
return false;
}
filename_trans_t key;
key.stype = src->s.value;
key.ttype = tgt->s.value;
key.tclass = cls->s.value;
key.name = (char *) o;
trans = hashtab_find(db->filename_trans, (hashtab_key_t) &key);
if (trans == nullptr) {
trans = auto_cast(xcalloc(sizeof(*trans), 1));
hashtab_insert(db->filename_trans, (hashtab_key_t) &key, trans);
}
// Overwrite existing
trans->otype = def->s.value;
return true;
}
bool sepol_impl::add_genfscon(const char *fs_name, const char *path, const char *context) {
// First try to create context
context_struct_t *ctx;
if (context_from_string(nullptr, db, &ctx, context, strlen(context))) {
LOGW("Failed to create context from string [%s]\n", context);
return 1;
return false;
}
// Allocate genfs context
@ -598,7 +486,96 @@ int sepol_impl::add_genfscon(const char *fs_name, const char *path, const char *
else
newfs->head = newc;
return 0;
return true;
}
bool sepol_impl::create_domain(const char *type_name) {
type_datum_t *type = hashtab_find(db->p_types.table, type_name);
if (type) {
LOGW("Type %s already exists\n", type_name);
return true;
}
type = auto_cast(xmalloc(sizeof(type_datum_t)));
type_datum_init(type);
type->primary = 1;
type->flavor = TYPE_TYPE;
uint32_t value = 0;
if (symtab_insert(db, SYM_TYPES, strdup(type_name), type, SCOPE_DECL, 1, &value))
return false;
type->s.value = value;
ebitmap_set_bit(&db->global->branch_list->declared.p_types_scope, value - 1, 1);
auto new_size = sizeof(ebitmap_t) * db->p_types.nprim;
db->type_attr_map = auto_cast(xrealloc(db->type_attr_map, new_size));
db->attr_type_map = auto_cast(xrealloc(db->attr_type_map, new_size));
ebitmap_init(&db->type_attr_map[value - 1]);
ebitmap_init(&db->attr_type_map[value - 1]);
ebitmap_set_bit(&db->type_attr_map[value - 1], value - 1, 1);
// Re-index stuffs
if (policydb_index_decls(nullptr, db) ||
policydb_index_classes(db) || policydb_index_others(nullptr, db, 0))
return false;
// Add the type to all roles
for (int i = 0; i < db->p_roles.nprim; ++i) {
// Not sure all those three calls are needed
ebitmap_set_bit(&db->role_val_to_struct[i]->types.negset, value - 1, 0);
ebitmap_set_bit(&db->role_val_to_struct[i]->types.types, value - 1, 1);
type_set_expand(&db->role_val_to_struct[i]->types, &db->role_val_to_struct[i]->cache, db, 0);
}
set_attr("domain", value);
return true;
}
bool sepol_impl::set_domain_state(const char *s, bool permissive) {
type_datum_t *type;
if (s == nullptr) {
hashtab_for_each(db->p_types.table, [&](hashtab_ptr_t node) {
type = auto_cast(node->datum);
if (ebitmap_set_bit(&db->permissive_map, type->s.value, permissive))
LOGW("Could not set bit in permissive map\n");
});
} else {
type = hashtab_find(db->p_types.table, s);
if (type == nullptr) {
LOGW("type %s does not exist\n", s);
return false;
}
if (ebitmap_set_bit(&db->permissive_map, type->s.value, permissive)) {
LOGW("Could not set bit in permissive map\n");
return false;
}
}
return true;
}
bool sepol_impl::add_typeattribute(const char *type, const char *attr) {
type_datum_t *domain = hashtab_find(db->p_types.table, type);
if (domain == nullptr) {
LOGW("type %s does not exist\n", type);
return false;
}
int attr_val = set_attr(attr, domain->s.value);
if (attr_val < 0)
return false;
hashtab_for_each(db->p_classes.table, [&](hashtab_ptr_t node){
auto cls = static_cast<class_datum_t *>(node->datum);
for (constraint_node_t *n = cls->constraints; n ; n = n->next) {
for (constraint_expr_t *e = n->expr; e; e = e->next) {
if (e->expr_type == CEXPR_NAMES &&
ebitmap_get_bit(&e->type_names->types, attr_val - 1)) {
ebitmap_set_bit(&e->names, domain->s.value - 1, 1);
}
}
}
});
return true;
}
void sepol_impl::strip_dontaudit() {
@ -608,52 +585,52 @@ void sepol_impl::strip_dontaudit() {
});
}
int sepolicy::allow(const char *s, const char *t, const char *c, const char *p) {
bool sepolicy::allow(const char *s, const char *t, const char *c, const char *p) {
dprint(__FUNCTION__, s, t, c, p);
return impl->add_rule(s, t, c, p, AVTAB_ALLOWED, false);
}
int sepolicy::deny(const char *s, const char *t, const char *c, const char *p) {
bool sepolicy::deny(const char *s, const char *t, const char *c, const char *p) {
dprint(__FUNCTION__, s, t, c, p);
return impl->add_rule(s, t, c, p, AVTAB_ALLOWED, true);
}
int sepolicy::auditallow(const char *s, const char *t, const char *c, const char *p) {
bool sepolicy::auditallow(const char *s, const char *t, const char *c, const char *p) {
dprint(__FUNCTION__, s, t, c, p);
return impl->add_rule(s, t, c, p, AVTAB_AUDITALLOW, false);
}
int sepolicy::dontaudit(const char *s, const char *t, const char *c, const char *p) {
bool sepolicy::dontaudit(const char *s, const char *t, const char *c, const char *p) {
dprint(__FUNCTION__, s, t, c, p);
return impl->add_rule(s, t, c, p, AVTAB_AUDITDENY, true);
}
int sepolicy::allowxperm(const char *s, const char *t, const char *c, const char *range) {
bool sepolicy::allowxperm(const char *s, const char *t, const char *c, const char *range) {
dprint(__FUNCTION__, s, t, c, "ioctl", range);
return impl->add_xperm_rule(s, t, c, range, AVTAB_XPERMS_ALLOWED, false);
}
int sepolicy::auditallowxperm(const char *s, const char *t, const char *c, const char *range) {
bool sepolicy::auditallowxperm(const char *s, const char *t, const char *c, const char *range) {
dprint(__FUNCTION__, s, t, c, "ioctl", range);
return impl->add_xperm_rule(s, t, c, range, AVTAB_XPERMS_AUDITALLOW, false);
}
int sepolicy::dontauditxperm(const char *s, const char *t, const char *c, const char *range) {
bool sepolicy::dontauditxperm(const char *s, const char *t, const char *c, const char *range) {
dprint(__FUNCTION__, s, t, c, "ioctl", range);
return impl->add_xperm_rule(s, t, c, range, AVTAB_XPERMS_DONTAUDIT, false);
}
int sepolicy::type_change(const char *s, const char *t, const char *c, const char *d) {
bool sepolicy::type_change(const char *s, const char *t, const char *c, const char *d) {
dprint(__FUNCTION__, s, t, c, d);
return impl->add_type_rule(s, t, c, d, AVTAB_CHANGE);
}
int sepolicy::type_member(const char *s, const char *t, const char *c, const char *d) {
bool sepolicy::type_member(const char *s, const char *t, const char *c, const char *d) {
dprint(__FUNCTION__, s, t, c, d);
return impl->add_type_rule(s, t, c, d, AVTAB_MEMBER);
}
int sepolicy::type_transition(const char *s, const char *t, const char *c, const char *d, const char *o) {
bool sepolicy::type_transition(const char *s, const char *t, const char *c, const char *d, const char *o) {
if (o) {
dprint(__FUNCTION__, s, t, c, d);
return impl->add_type_rule(s, t, c, d, AVTAB_TRANSITION);
@ -663,31 +640,31 @@ int sepolicy::type_transition(const char *s, const char *t, const char *c, const
}
}
int sepolicy::permissive(const char *s) {
bool sepolicy::permissive(const char *s) {
dprint(__FUNCTION__, s);
return impl->set_domain_state(s, true);
}
int sepolicy::enforce(const char *s) {
bool sepolicy::enforce(const char *s) {
dprint(__FUNCTION__, s);
return impl->set_domain_state(s, false);
}
int sepolicy::create(const char *s) {
bool sepolicy::create(const char *s) {
dprint(__FUNCTION__, s);
return impl->create_domain(s);
}
int sepolicy::typeattribute(const char *type, const char *attr) {
bool sepolicy::typeattribute(const char *type, const char *attr) {
dprint(__FUNCTION__, type, attr);
return impl->add_typeattribute(type, attr);
}
int sepolicy::genfscon(const char *fs_name, const char *path, const char *ctx) {
bool sepolicy::genfscon(const char *fs_name, const char *path, const char *ctx) {
dprint(__FUNCTION__, fs_name, path, ctx);
return impl->add_genfscon(fs_name, path, ctx);
}
int sepolicy::exists(const char *source) {
bool sepolicy::exists(const char *source) {
return hashtab_search(db->p_types.table, source) != nullptr;
}

22
native/jni/magiskpolicy/sepolicy.hpp
View File

@ -8,19 +8,17 @@ struct sepol_impl : public sepolicy {
int set_attr(const char *attr_name, int type_val);
void check_avtab_node(avtab_ptr_t node);
avtab_ptr_t get_avtab_node(avtab_key_t *key, avtab_extended_perms_t *xperms);
int add_avrule(avtab_key_t *key, int val, bool n);
int add_rule(const char *s, const char *t, const char *c, const char *p, int effect, bool n);
int add_rule(type_datum_t *src, type_datum_t *tgt, class_datum_t *cls, perm_datum_t *perm, int effect, bool n);
int add_avxrule(avtab_key_t *key, uint16_t low, uint16_t high, bool n);
int add_xperm_rule(type_datum_t *src, type_datum_t *tgt,
bool add_rule(const char *s, const char *t, const char *c, const char *p, int effect, bool n);
void add_rule(type_datum_t *src, type_datum_t *tgt, class_datum_t *cls, perm_datum_t *perm, int effect, bool n);
void add_xperm_rule(type_datum_t *src, type_datum_t *tgt,
class_datum_t *cls, uint16_t low, uint16_t high, int effect, bool n);
int add_xperm_rule(const char *s, const char *t, const char *c, const char *range, int effect, bool n);
int create_domain(const char *type_name);
int set_domain_state(const char *s, bool permissive);
int add_filename_trans(const char *s, const char *t, const char *c, const char *d, const char *o);
int add_typeattribute(const char *type, const char *attr);
int add_type_rule(const char *s, const char *t, const char *c, const char *d, int effect);
int add_genfscon(const char *fs_name, const char *path, const char *context);
bool add_xperm_rule(const char *s, const char *t, const char *c, const char *range, int effect, bool n);
bool add_type_rule(const char *s, const char *t, const char *c, const char *d, int effect);
bool add_filename_trans(const char *s, const char *t, const char *c, const char *d, const char *o);
bool add_genfscon(const char *fs_name, const char *path, const char *context);
bool create_domain(const char *type_name);
bool set_domain_state(const char *s, bool permissive);
bool add_typeattribute(const char *type, const char *attr);
void strip_dontaudit();
void allow_su_client(const char *type);
};

2
native/jni/magiskpolicy/statement.cpp
View File

@ -133,7 +133,7 @@ static bool tokenize_and_check(char *stmt, vector<vector<char *>> &arr) {
template <typename Func, typename ...Args>
static void run_and_check(const Func &fn, const char *action, Args ...args) {
if (fn(args...)) {
if (!fn(args...)) {
string s = "Error in: %s";
for (int i = 0; i < sizeof...(args); ++i) s += " %s";
s += "\n";