#include <sys/types.h>
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include <sys/ipc.h>
#include <signal.h>
#include <mach/mach.h>
#include <errno.h>
#include <pthread.h>
#include "libnotify.h"
#include "notify.h"
#define MACH_PORT_SEND_TIMEOUT 50
#define USER_PROTECTED_UID_PREFIX "user.uid."
#define USER_PROTECTED_UID_PREFIX_LEN 9
int __notify_78945668_info__ = 0;
notify_state_t *
_notify_lib_notify_state_new(uint32_t flags, uint32_t table_size)
{
notify_state_t *ns;
ns = (notify_state_t *)calloc(1, sizeof(notify_state_t));
if (ns == NULL) return NULL;
ns->flags = flags;
if (ns->flags & NOTIFY_STATE_USE_LOCKS)
{
ns->lock = (pthread_mutex_t *)malloc(sizeof(pthread_mutex_t));
pthread_mutex_init(ns->lock, NULL);
}
ns->name_table = _nc_table_new(table_size);
ns->client_table = _nc_table_new(table_size);
ns->sock = -1;
return ns;
}
void
_notify_lib_notify_state_free(notify_state_t *ns)
{
client_t *n;
list_t *c;
if (ns == NULL) return;
_nc_table_free(ns->name_table);
_nc_table_free(ns->client_table);
if (ns->lock != NULL)
{
pthread_mutex_destroy(ns->lock);
free(ns->lock);
}
c = ns->free_client_list;
while (c != NULL)
{
n = (client_t *)_nc_list_data(c);
c = _nc_list_next(c);
if (n != NULL) free(n);
}
_nc_list_release_list(ns->free_client_list);
if (ns->sock != -1)
{
shutdown(ns->sock, 2);
close(ns->sock);
}
if (ns->controlled_name != NULL) free(ns->controlled_name);
}
static client_t *
_internal_client_new(notify_state_t *ns)
{
client_t *c;
if (ns == NULL) return NULL;
c = NULL;
if (ns->free_client_list != NULL)
{
c = _nc_list_data(ns->free_client_list);
ns->free_client_list = _nc_list_chop(ns->free_client_list);
}
else
{
c = calloc(1, sizeof(client_t));
if (c == NULL) return NULL;
ns->client_id++;
if (ns->client_id == NOTIFY_INVALID_CLIENT_ID) ns->client_id++;
c->client_id = ns->client_id;
}
if (c == NULL) return NULL;
c->info = (client_info_t *)calloc(1, sizeof(client_info_t));
if (c->info == NULL) return NULL;
c->info->lastval = 0;
_nc_table_insert_n(ns->client_table, c->client_id, c);
return c;
}
static void
_internal_free_client_info(client_info_t *info)
{
if (info == NULL) return;
switch (info->notify_type)
{
case NOTIFY_TYPE_SIGNAL:
{
break;
}
case NOTIFY_TYPE_FD:
{
if (info->fd > 0) close(info->fd);
break;
}
case NOTIFY_TYPE_PORT:
{
if (info->msg != NULL)
{
if (info->msg->header.msgh_remote_port != MACH_PORT_NULL)
{
mach_port_deallocate(mach_task_self(), info->msg->header.msgh_remote_port);
}
free(info->msg);
}
break;
}
default:
{
break;
}
}
if (info->session != TASK_NAME_NULL)
{
mach_port_deallocate(mach_task_self(), info->session);
info->session = TASK_NAME_NULL;
}
free(info);
}
static void
_internal_client_release(notify_state_t *ns, client_t *c)
{
client_t *p;
uint32_t x;
list_t *a, *l;
if (ns == NULL) return;
if (c == NULL) return;
_internal_free_client_info(c->info);
x = c->client_id;
_nc_table_delete_n(ns->client_table, x);
if (x == ns->client_id)
{
free(c);
ns->client_id--;
}
else
{
memset(c, 0, sizeof(client_t));
c->client_id = x;
if (ns->free_client_list == NULL)
{
ns->free_client_list = _nc_list_new(c);
return;
}
a = NULL;
l = ns->free_client_list;
p = _nc_list_data(l);
while ((l != NULL) && (p->client_id > x))
{
a = l;
l = _nc_list_next(l);
p = _nc_list_data(l);
}
if (l == NULL)
{
_nc_list_append(a, _nc_list_new(c));
}
else if (a == NULL)
{
ns->free_client_list = _nc_list_prepend(ns->free_client_list, _nc_list_new(c));
}
else
{
_nc_list_prepend(l, _nc_list_new(c));
}
}
p = _nc_list_data(ns->free_client_list);
while ((p != NULL) && (p->client_id == ns->client_id))
{
free(p);
ns->client_id--;
ns->free_client_list = _nc_list_chop(ns->free_client_list);
p = _nc_list_data(ns->free_client_list);
}
}
static name_info_t *
_internal_new_name(notify_state_t *ns, const char *name)
{
name_info_t *n;
if (ns == NULL) return NULL;
if (name == NULL) return NULL;
n = (name_info_t *)calloc(1, sizeof(name_info_t));
if (n == NULL) return NULL;
n->name = strdup(name);
n->access = NOTIFY_ACCESS_DEFAULT;
n->slot = (uint32_t)-1;
n->val = 1;
_nc_table_insert(ns->name_table, name, n);
return n;
}
static void
_internal_insert_controlled_name(notify_state_t *ns, name_info_t *n)
{
int i, j;
for (i = 0; i < ns->controlled_name_count; i++)
{
if (ns->controlled_name[i] == n) return;
}
if (ns->controlled_name_count == 0)
{
ns->controlled_name = (name_info_t **)malloc(sizeof(name_info_t *));
}
else
{
ns->controlled_name = (name_info_t **)reallocf(ns->controlled_name, (ns->controlled_name_count + 1) * sizeof(name_info_t *));
}
for (i = 0; i < ns->controlled_name_count; i++)
{
if (strcmp(n->name, ns->controlled_name[i]->name) > 0) break;
}
for (j = ns->controlled_name_count; j > i; j--)
{
ns->controlled_name[j] = ns->controlled_name[j-1];
}
ns->controlled_name[i] = n;
ns->controlled_name_count++;
}
static void
_internal_remove_controlled_name(notify_state_t *ns, name_info_t *n)
{
uint32_t i, j;
for (i = 0; i < ns->controlled_name_count; i++)
{
if (ns->controlled_name[i] == n)
{
for (j = i + 1; j < ns->controlled_name_count; j++)
{
ns->controlled_name[j-1] = ns->controlled_name[j];
}
ns->controlled_name_count--;
if (ns->controlled_name_count == 0)
{
free(ns->controlled_name);
ns->controlled_name = NULL;
}
else
{
ns->controlled_name = (name_info_t **)reallocf(ns->controlled_name, ns->controlled_name_count * sizeof(name_info_t *));
}
return;
}
}
}
static uint32_t
_internal_check_user_protected(const char *name, uid_t uid, int *is_protected)
{
char str[64];
uint32_t len;
*is_protected = 0;
if (strncmp(name, USER_PROTECTED_UID_PREFIX, USER_PROTECTED_UID_PREFIX_LEN)) return NOTIFY_STATUS_OK;
*is_protected = 1;
if (uid == 0) return NOTIFY_STATUS_OK;
snprintf(str, sizeof(str) - 1, "%s%d", USER_PROTECTED_UID_PREFIX, uid);
len = strlen(str);
if ((!strncmp(name, str, len)) && ((name[len] == '\0') || (name[len] == '.'))) return NOTIFY_STATUS_OK;
return NOTIFY_STATUS_NOT_AUTHORIZED;
}
static uint32_t
_internal_check_controlled_access(notify_state_t *ns, char *name, uid_t uid, gid_t gid, int req)
{
uint32_t status, i, len, plen;
name_info_t *p;
int is_protected;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (name == NULL) return NOTIFY_STATUS_INVALID_NAME;
if (uid == 0) return NOTIFY_STATUS_OK;
is_protected = 0;
status = _internal_check_user_protected(name, uid, &is_protected);
if (status != NOTIFY_STATUS_OK) return status;
len = strlen(name);
for (i = 0; i < ns->controlled_name_count; i++)
{
p = ns->controlled_name[i];
if (p == NULL) break;
plen = strlen(p->name);
if (!strcmp(p->name, name)) continue;
if (plen >= len) continue;
if (strncmp(p->name, name, plen)) continue;
if ((p->uid == uid) && (p->access & (req << NOTIFY_ACCESS_USER_SHIFT))) break;
if ((p->gid == gid) && (p->access & (req << NOTIFY_ACCESS_GROUP_SHIFT))) break;
if (p->access & (req << NOTIFY_ACCESS_OTHER_SHIFT)) break;
return NOTIFY_STATUS_NOT_AUTHORIZED;
}
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_check_controlled_access(notify_state_t *ns, char *name, uid_t uid, gid_t gid, int req)
{
int status;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
status = _internal_check_controlled_access(ns, name, uid, gid, req);
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return status;
}
static uint32_t
_internal_check_access(notify_state_t *ns, name_info_t *n, uid_t uid, gid_t gid, int req)
{
uint32_t status;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (n == NULL) return NOTIFY_STATUS_INVALID_NAME;
if (uid == 0) return NOTIFY_STATUS_OK;
status = _internal_check_controlled_access(ns, n->name, uid, gid, req);
if (status != NOTIFY_STATUS_OK) return status;
if ((n->uid == uid) && (n->access & (req << NOTIFY_ACCESS_USER_SHIFT))) return NOTIFY_STATUS_OK;
if ((n->gid == gid) && (n->access & (req << NOTIFY_ACCESS_GROUP_SHIFT))) return NOTIFY_STATUS_OK;
if (n->access & (req << NOTIFY_ACCESS_OTHER_SHIFT)) return NOTIFY_STATUS_OK;
return NOTIFY_STATUS_NOT_AUTHORIZED;
}
static void
_internal_send(notify_state_t *ns, client_t *c)
{
uint32_t cid;
ssize_t len;
kern_return_t kstatus;
if (ns == NULL) return;
if (c == NULL) return;
switch (c->info->notify_type)
{
case NOTIFY_TYPE_SIGNAL:
{
kill(c->info->pid, c->info->sig);
break;
}
case NOTIFY_TYPE_FD:
{
if (c->info->fd >= 0)
{
cid = htonl(c->info->token);
len = write(c->info->fd, &cid, sizeof(uint32_t));
if (len != sizeof(uint32_t))
{
close(c->info->fd);
c->info->fd = -1;
}
}
break;
}
case NOTIFY_TYPE_PORT:
{
c->info->msg->header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, MACH_MSGH_BITS_ZERO);
c->info->msg->header.msgh_local_port = MACH_PORT_NULL;
c->info->msg->header.msgh_size = sizeof(mach_msg_empty_send_t);
c->info->msg->header.msgh_id = (mach_msg_id_t)(c->info->token);
kstatus = mach_msg(&(c->info->msg->header),
MACH_SEND_MSG | MACH_SEND_TIMEOUT,
c->info->msg->header.msgh_size,
0,
MACH_PORT_NULL,
MACH_PORT_SEND_TIMEOUT,
MACH_PORT_NULL);
if (kstatus == MACH_SEND_INVALID_DEST)
{
}
break;
}
default:
{
break;
}
}
}
uint32_t
_notify_lib_post(notify_state_t *ns, const char *name, uid_t uid, gid_t gid)
{
name_info_t *n;
client_t *c;
list_t *l;
int auth;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
n = (name_info_t *)_nc_table_find(ns->name_table, name);
if (n == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_NAME;
}
auth = _internal_check_access(ns, n, uid, gid, NOTIFY_ACCESS_WRITE);
if (auth != 0)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_NOT_AUTHORIZED;
}
n->val++;
l = n->client_list;
while (l != NULL)
{
c = _nc_list_data(l);
_internal_send(ns, c);
l = _nc_list_next(l);
}
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
static void
_internal_release_name_info(notify_state_t *ns, name_info_t *n)
{
if (n->refcount > 0) n->refcount--;
if (n->refcount == 0)
{
_internal_remove_controlled_name(ns, n);
_nc_table_delete(ns->name_table, n->name);
free(n->name);
free(n);
}
}
static void
_internal_cancel(notify_state_t *ns, uint32_t cid)
{
client_t *c;
name_info_t *n;
if (ns == NULL) return;
if (cid == 0) return;
c = NULL;
n = NULL;
c = _nc_table_find_n(ns->client_table, cid);
if (c == NULL) return;
n = c->info->name_info;
if (n == NULL) return;
n->client_list = _nc_list_find_release(n->client_list, c);
_internal_client_release(ns, c);
_internal_release_name_info(ns, n);
}
void
_notify_lib_cancel(notify_state_t *ns, uint32_t cid)
{
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
_internal_cancel(ns, cid);
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
}
void
_notify_lib_cancel_session(notify_state_t *ns, task_name_t tname)
{
client_t *c, *a, *p;
name_info_t *n;
void *tt;
list_t *l, *x;
a = NULL;
x = NULL;
p = NULL;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
tt = _nc_table_traverse_start(ns->name_table);
while (tt != NULL)
{
n = _nc_table_traverse(ns->name_table, tt);
if (n == NULL) break;
for (l = n->client_list; l != NULL; l = _nc_list_next(l))
{
c = _nc_list_data(l);
if ((c->info != NULL) && (c->info->session == tname))
{
a = (client_t *)malloc(sizeof(client_t));
if (a == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return;
}
a->client_id = c->client_id;
a->info = c->info;
x = _nc_list_prepend(x, _nc_list_new(a));
}
}
}
_nc_table_traverse_end(ns->name_table, tt);
for (l = x; l != NULL; l = _nc_list_next(l))
{
c = _nc_list_data(l);
_internal_cancel(ns, c->client_id);
free(c);
}
_nc_list_release_list(x);
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
}
uint32_t
_notify_lib_check(notify_state_t *ns, uint32_t cid, int *check)
{
client_t *c;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (cid == 0) return NOTIFY_STATUS_INVALID_TOKEN;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
c = _nc_table_find_n(ns->client_table, cid);
if (c == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
if (c->info->name_info == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
if (c->info->name_info->val == c->info->lastval)
{
*check = 0;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
c->info->lastval = c->info->name_info->val;
*check = 1;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_peek(notify_state_t *ns, uint32_t cid, int *val)
{
client_t *c;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (cid == 0) return NOTIFY_STATUS_INVALID_TOKEN;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
c = _nc_table_find_n(ns->client_table, cid);
if (c == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
if (c->info->name_info == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
*val = c->info->name_info->val;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
int *
_notify_lib_check_addr(notify_state_t *ns, uint32_t cid)
{
client_t *c;
int *addr;
if (ns == NULL) return NULL;
if (cid == 0) return NULL;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
c = _nc_table_find_n(ns->client_table, cid);
if (c == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NULL;
}
if (c->info->name_info == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NULL;
}
addr = (int *)&(c->info->name_info->val);
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return addr;
}
uint32_t
_notify_lib_get_state(notify_state_t *ns, uint32_t cid, uint64_t *state)
{
client_t *c;
if (state == NULL) return NOTIFY_STATUS_FAILED;
*state = 0;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (cid == 0) return NOTIFY_STATUS_INVALID_TOKEN;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
c = _nc_table_find_n(ns->client_table, cid);
if (c == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
if (c->info->name_info == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
*state = c->info->name_info->state;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_set_state(notify_state_t *ns, uint32_t cid, uint64_t state, uid_t uid, gid_t gid)
{
client_t *c;
int auth;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (cid == 0) return NOTIFY_STATUS_INVALID_TOKEN;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
c = _nc_table_find_n(ns->client_table, cid);
if (c == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
if (c->info->name_info == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
auth = _internal_check_access(ns, c->info->name_info, uid, gid, NOTIFY_ACCESS_WRITE);
if (auth != 0)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_NOT_AUTHORIZED;
}
c->info->name_info->state = state;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_get_val(notify_state_t *ns, uint32_t cid, int *val)
{
client_t *c;
*val = 0;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (cid == 0) return NOTIFY_STATUS_INVALID_TOKEN;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
c = _nc_table_find_n(ns->client_table, cid);
if (c == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
if (c->info->name_info == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
*val = c->info->name_info->val;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_set_val(notify_state_t *ns, uint32_t cid, int val, uid_t uid, gid_t gid)
{
client_t *c;
int auth;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (cid == 0) return NOTIFY_STATUS_INVALID_TOKEN;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
c = _nc_table_find_n(ns->client_table, cid);
if (c == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
if (c->info->name_info == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_TOKEN;
}
auth = _internal_check_access(ns, c->info->name_info, uid, gid, NOTIFY_ACCESS_WRITE);
if (auth != 0)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_NOT_AUTHORIZED;
}
c->info->name_info->val = val;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
static uint32_t
_internal_register_common(notify_state_t *ns, const char *name, uid_t uid, gid_t gid, client_t **outc, name_info_t **outn)
{
client_t *c;
name_info_t *n;
int auth, is_protected, is_new_name;
uint32_t status;
if (outc == NULL) return 0;
*outc = NULL;
if (outn != NULL) *outn = NULL;
is_new_name = 0;
is_protected = 0;
n = (name_info_t *)_nc_table_find(ns->name_table, name);
if (n == NULL)
{
is_new_name = 1;
status = _internal_check_user_protected(name, uid, &is_protected);
if (status != NOTIFY_STATUS_OK) return status;
n = _internal_new_name(ns, name);
if (n == NULL) return NOTIFY_STATUS_FAILED;
if (is_protected == 1)
{
n->uid = uid;
n->gid = gid;
if (uid == 0)
{
n->uid = atoi(name + USER_PROTECTED_UID_PREFIX_LEN);
n->gid = -1;
}
n->access = NOTIFY_ACCESS_USER_RW;
}
}
auth = _internal_check_access(ns, n, uid, gid, NOTIFY_ACCESS_READ);
if (auth != 0)
{
if (is_new_name == 1)
{
_nc_table_delete(ns->name_table, n->name);
free(n->name);
free(n);
}
return NOTIFY_STATUS_NOT_AUTHORIZED;
}
c = _internal_client_new(ns);
if (c == NULL)
{
if (is_new_name == 1)
{
_nc_table_delete(ns->name_table, n->name);
free(n->name);
free(n);
}
return NOTIFY_STATUS_FAILED;
}
n->refcount++;
c->info->name_info = n;
n->client_list = _nc_list_prepend(n->client_list, _nc_list_new(c));
if ((is_new_name == 1) && (is_protected == 1)) _internal_insert_controlled_name(ns, n);
*outc = c;
if (outn != NULL) *outn = n;
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_register_signal(notify_state_t *ns, const char *name, task_name_t tname, pid_t pid, uint32_t sig, uid_t uid, gid_t gid, uint32_t *out_token)
{
client_t *c;
uint32_t status;
if (ns == NULL) return 0;
if (name == NULL) return 0;
c = NULL;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
status = _internal_register_common(ns, name, uid, gid, &c, NULL);
if (status != NOTIFY_STATUS_OK)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return status;
}
c->info->notify_type = NOTIFY_TYPE_SIGNAL;
c->info->pid = pid;
c->info->sig = sig;
c->info->session = tname;
*out_token = c->client_id;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_register_file_descriptor(notify_state_t *ns, const char *name, task_name_t tname, const char *path, uint32_t token, uid_t uid, gid_t gid, uint32_t *out_token)
{
client_t *c;
name_info_t *n;
uint32_t status;
struct sockaddr_un sun;
int sock;
if (ns == NULL) return 0;
if (name == NULL) return 0;
c = NULL;
n = NULL;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
sock = socket(AF_UNIX, SOCK_DGRAM, 0);
if (sock < 0)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_FAILED;
}
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_UNIX;
strncpy(sun.sun_path, path, sizeof(sun.sun_path));
if (connect(sock, (const struct sockaddr *)&sun, sizeof(sun)) < 0)
{
close(sock);
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_FILE;
}
status = _internal_register_common(ns, name, uid, gid, &c, &n);
if (status != NOTIFY_STATUS_OK)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return status;
}
c->info->name_info = n;
c->info->notify_type = NOTIFY_TYPE_FD;
c->info->fd = sock;
c->info->token = token;
c->info->session = tname;
*out_token = c->client_id;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_register_mach_port(notify_state_t *ns, const char *name, task_name_t tname, mach_port_t port, uint32_t token, uid_t uid, gid_t gid, uint32_t *out_token)
{
client_t *c;
uint32_t status;
if (ns == NULL) return 0;
if (name == NULL) return 0;
c = NULL;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
status = _internal_register_common(ns, name, uid, gid, &c, NULL);
if (status != NOTIFY_STATUS_OK)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return status;
}
c->info->notify_type = NOTIFY_TYPE_PORT;
c->info->msg = (mach_msg_empty_send_t *)calloc(1, sizeof(mach_msg_empty_send_t));
c->info->msg->header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, MACH_MSGH_BITS_ZERO);
c->info->msg->header.msgh_remote_port = port;
c->info->msg->header.msgh_local_port = MACH_PORT_NULL;
c->info->msg->header.msgh_size = sizeof(mach_msg_empty_send_t);
c->info->msg->header.msgh_id = token;
c->info->token = token;
c->info->session = tname;
*out_token = c->client_id;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_register_plain(notify_state_t *ns, const char *name, task_name_t tname, uint32_t slot, uid_t uid, gid_t gid, uint32_t *out_token)
{
client_t *c;
name_info_t *n;
uint32_t status;
if (ns == NULL) return 0;
if (name == NULL) return 0;
c = NULL;
n = NULL;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
status = _internal_register_common(ns, name, uid, gid, &c, &n);
if (status != NOTIFY_STATUS_OK)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return status;
}
if (slot == (uint32_t)-1)
{
c->info->notify_type = NOTIFY_TYPE_PLAIN;
}
else
{
c->info->notify_type = NOTIFY_TYPE_MEMORY;
n->slot = slot;
}
c->info->session = tname;
*out_token = c->client_id;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_set_owner(notify_state_t *ns, const char *name, uid_t uid, gid_t gid)
{
name_info_t *n;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (name == NULL) return NOTIFY_STATUS_INVALID_NAME;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
n = (name_info_t *)_nc_table_find(ns->name_table, name);
if (n == NULL)
{
n = _internal_new_name(ns, name);
if (n == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_FAILED;
}
n->refcount++;
}
n->uid = uid;
n->gid = gid;
_internal_insert_controlled_name(ns, n);
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_get_owner(notify_state_t *ns, const char *name, uint32_t *uid, uint32_t *gid)
{
name_info_t *n;
int i, nlen, len;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
n = (name_info_t *)_nc_table_find(ns->name_table, name);
if (n != NULL)
{
*uid = n->uid;
*gid = n->gid;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
len = strlen(name);
for (i = 0; i < ns->controlled_name_count; i++)
{
n = ns->controlled_name[i];
if (n == NULL) break;
nlen = strlen(n->name);
if (!strcmp(n->name, name))
{
*uid = n->uid;
*gid = n->gid;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
if (nlen >= len) continue;
if (strncmp(n->name, name, nlen)) continue;
*uid = n->uid;
*gid = n->gid;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
*uid = 0;
*gid = 0;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_set_access(notify_state_t *ns, const char *name, uint32_t mode)
{
name_info_t *n;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (name == NULL) return NOTIFY_STATUS_INVALID_NAME;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
n = (name_info_t *)_nc_table_find(ns->name_table, name);
if (n == NULL)
{
n = _internal_new_name(ns, name);
if (n == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_FAILED;
}
n->refcount++;
}
n->access = mode;
_internal_insert_controlled_name(ns, n);
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_get_access(notify_state_t *ns, const char *name, uint32_t *mode)
{
name_info_t *n;
int i, nlen, len;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (name == NULL) return NOTIFY_STATUS_INVALID_NAME;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
n = (name_info_t *)_nc_table_find(ns->name_table, name);
if (n != NULL)
{
*mode = n->access;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
len = strlen(name);
for (i = 0; i < ns->controlled_name_count; i++)
{
n = ns->controlled_name[i];
if (n == NULL) break;
nlen = strlen(n->name);
if (!strcmp(n->name, name))
{
*mode = n->access;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
if (nlen >= len) continue;
if (strncmp(n->name, name, nlen)) continue;
*mode = n->access;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
*mode = NOTIFY_ACCESS_DEFAULT;
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}
uint32_t
_notify_lib_release_name(notify_state_t *ns, const char *name, uid_t uid, gid_t gid)
{
name_info_t *n;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (name == NULL) return NOTIFY_STATUS_INVALID_NAME;
if (ns->lock != NULL) pthread_mutex_lock(ns->lock);
n = (name_info_t *)_nc_table_find(ns->name_table, name);
if (n == NULL)
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_INVALID_NAME;
}
if ((n->uid != uid) && (uid != 0))
{
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_NOT_AUTHORIZED;
}
_internal_release_name_info(ns, n);
if (ns->lock != NULL) pthread_mutex_unlock(ns->lock);
return NOTIFY_STATUS_OK;
}