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Code Issues Packages Projects Releases 1 Wiki Activity

Add multiuser support

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This commit is contained in:
topjohnwu
2017-05-27 02:40:12 +08:00
parent 371db886b4
commit 94c2fc80d2
3 changed files with 87 additions and 172 deletions
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activity.c
+20 -95
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@@ -26,15 +26,8 @@
static void silent_run(char* const args[]) {
set_identity(0);
pid_t pid;
pid = fork();
/* Parent */
if (pid < 0) {
PLOGE("fork");
}
else if (pid > 0) {
if (fork())
return;
}
int zero = open("/dev/zero", O_RDONLY | O_CLOEXEC);
dup2(zero, 0);
int null = open("/dev/null", O_WRONLY | O_CLOEXEC);
@@ -46,79 +39,37 @@ static void silent_run(char* const args[]) {
_exit(EXIT_FAILURE);
}
static int get_owner_login_user_args(struct su_context *ctx, char* user, int user_len) {
int needs_owner_login_prompt = 0;
if (ctx->user.multiuser_mode == MULTIUSER_MODE_OWNER_MANAGED) {
if (0 != ctx->user.android_user_id) {
needs_owner_login_prompt = 1;
}
snprintf(user, user_len, "0");
static void setup_user(struct su_context *ctx, char* user) {
switch (ctx->user.multiuser_mode) {
case MULTIUSER_MODE_OWNER_ONLY: /* Should already be denied if not owner */
case MULTIUSER_MODE_OWNER_MANAGED:
sprintf(user, "%d", 0);
break;
case MULTIUSER_MODE_USER:
sprintf(user, "%d", ctx->user.android_user_id);
break;
}
else if (ctx->user.multiuser_mode == MULTIUSER_MODE_USER) {
snprintf(user, user_len, "%d", ctx->user.android_user_id);
}
else if (ctx->user.multiuser_mode == MULTIUSER_MODE_NONE) {
user[0] = '\0';
}
else {
snprintf(user, user_len, "0");
}
return needs_owner_login_prompt;
}
void app_send_result(struct su_context *ctx, policy_t policy) {
// char binary_version[256];
// sprintf(binary_version, "%d", VERSION_CODE);
char fromUid[16];
sprintf(fromUid, "%d", ctx->from.uid);
char uid[256];
sprintf(uid, "%d", ctx->from.uid);
char toUid[256];
char toUid[16];
sprintf(toUid, "%d", ctx->to.uid);
char pid[256];
char pid[16];
sprintf(pid, "%d", ctx->from.pid);
char user[64];
get_owner_login_user_args(ctx, user, sizeof(user));
if (0 != ctx->user.android_user_id) {
char android_user_id[256];
sprintf(android_user_id, "%d", ctx->user.android_user_id);
char *user_result_command[] = {
AM_PATH,
ACTION_RESULT,
"--ei",
"from.uid",
uid,
"--ei",
"to.uid",
toUid,
"--ei",
"pid",
pid,
"--es",
"command",
get_command(&ctx->to),
"--es",
"action",
policy == ALLOW ? "allow" : "deny",
user[0] ? "--user" : NULL,
android_user_id,
NULL
};
silent_run(user_result_command);
}
char user[16];
setup_user(ctx, user);
char *result_command[] = {
AM_PATH,
ACTION_RESULT,
"--ei",
"from.uid",
uid,
fromUid,
"--ei",
"to.uid",
toUid,
@@ -131,7 +82,7 @@ void app_send_result(struct su_context *ctx, policy_t policy) {
"--es",
"action",
policy == ALLOW ? "allow" : "deny",
user[0] ? "--user" : NULL,
"--user",
user,
NULL
};
@@ -139,34 +90,8 @@ void app_send_result(struct su_context *ctx, policy_t policy) {
}
void app_send_request(struct su_context *ctx) {
// if su is operating in MULTIUSER_MODEL_OWNER,
// and the user requestor is not the owner,
// the owner needs to be notified of the request.
// so there will be two activities shown.
char user[64];
int needs_owner_login_prompt = get_owner_login_user_args(ctx, user, sizeof(user));
if (needs_owner_login_prompt) {
char uid[256];
sprintf(uid, "%d", ctx->from.uid);
char android_user_id[256];
sprintf(android_user_id, "%d", ctx->user.android_user_id);
// in multiuser mode, the owner gets the su prompt
char *notify_command[] = {
AM_PATH,
ACTION_NOTIFY,
"--ei",
"caller_uid",
uid,
"--user",
android_user_id,
NULL
};
silent_run(notify_command);
}
setup_user(ctx, user);
char *request_command[] = {
AM_PATH,
@@ -174,7 +99,7 @@ void app_send_request(struct su_context *ctx) {
"--es",
"socket",
ctx->sock_path,
user[0] ? "--user" : NULL,
"--user",
user,
NULL
};