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/* { dg-do run } */
/* SEGV at comment below. */
typedef unsigned int size_t;
typedef enum har {
he_fatal = (-199),
he_not_initialized,
he_bad_input,
he_memory_too_small,
he_bad_action,
he_duplicate,
he_bad_nonce,
he_stale_nonce,
he_bad_credentials,
he_bad_user,
he_no_such_user,
he_bad_passwd,
he_unknown_auth_scheme,
he_not_found,
he_failed_digest_file_check,
he_failed_digest_file_save,
he_process_not_privileged,
he_other,
he_end_of_range,
ha_no_error = 0,
ha_no_value = 1
} har;
typedef enum realm_type
{
axis_realm = 0,
ws_realm
} realm_type;
__attribute__((__noclone__, __noinline__))
har has_www_auth(char *, size_t, realm_type, har);
__attribute__((__noclone__, __noinline__))
har has_auth_user(const char *, const char *, realm_type, char *, size_t);
__attribute__((__noclone__, __noinline__))
char *ha_get_string_value(void);
typedef struct
{
unsigned int track_id;
char* user;
char* realm;
char* authent;
int internal_realm;
} request;
enum user_response {
file_not_found_user_response = -3,
access_denied_user_response = -2,
no_user_response = -1,
ok_user_response = 0
};
struct realm_group {
char *name;
int id;
struct realm_group *next;
};
struct realm {
char *name;
char *space;
struct realm_group *groups;
struct realm *next;
};
struct user_info {
char *name;
int no_groups;
int groups[128];
struct user_info *next;
};
static struct user_info *find_user(const char *user_name);
static int is_member_of_groups(const struct user_info *user_item,
const struct realm_group *groups);
int authent_author(request *req);
struct realm *realms = ((void *)0);
struct user_info *users = ((void *)0);
static struct user_info*
find_user(const char *user_name)
{
struct user_info *user_item;
user_item = users;
while (user_item != ((void *)0)) {
/* SEGV due to NULL access here on user_name. See also comment below. */
if ((__builtin_strcmp(user_item->name, user_name) == 0))
break;
user_item = user_item->next;
}
return user_item;
}
static int
is_member_of_groups(const struct user_info *user_item,
const struct realm_group *groups)
{
const struct realm_group *group_item;
int i;
group_item = groups;
while (group_item != ((void *)0)) {
for (i = 0; i < user_item->no_groups; i++)
if (user_item->groups[i] == group_item->id)
return 0;
group_item = group_item->next;
}
return -1;
}
char *foo (void) __attribute__((__noclone__, __noinline__));
char* g_strdup (const char *str) __attribute__((__malloc__, __noclone__, __noinline__));
int g_strcmp0 (const char *str1, const char *str2);
static int
is_basic(char **user)
{
char *passwd_ptr;
char *authent = foo();
passwd_ptr = __builtin_strchr(authent, ':');
if (passwd_ptr != ((void *)0)) {
*user = g_strdup(authent);
return 0;
}
return -1;
}
static int
is_digest(char **user)
{
int ret_val = -1;
char *authent;
authent = ha_get_string_value();
if (authent) {
*user = g_strdup(authent);
ret_val = 0;
}
return ret_val;
}
__attribute__((__noclone__, __noinline__))
void g_free (void * mem);
static enum user_response
get_user_info_from_header(const realm_type type,
char **user_name,
struct user_info **user_item)
{
int ret_val = no_user_response;
if ((type == ws_realm)) {
if (is_basic(user_name) == 0)
ret_val = access_denied_user_response;
if (is_digest(user_name) == 0)
ret_val = ok_user_response;
} else {
if (is_basic(user_name) < 0 &&
/* Load of *user_name here, but not after the is_digest call. */
is_digest(user_name) < 0)
;
else if ((*user_item = find_user(*user_name)) != ((void *)0))
ret_val = ok_user_response;
else
ret_val = access_denied_user_response;
if (ret_val != ok_user_response)
g_free(*user_name);
}
return ret_val;
}
static enum user_response
authenticate_user(request *req,
char **user_name,
struct user_info **user_item)
{
char *authent = ((void *)0);
har resp = ha_no_value;
enum user_response user_resp;
int ret_val = no_user_response;
if (req->authent && __builtin_strlen(req->authent)) {
authent = req->authent;
user_resp = get_user_info_from_header(req->internal_realm,
user_name,
user_item);
if (user_resp == ok_user_response) {
resp = has_auth_user(authent, 0, req->internal_realm, "", 1);
if (resp == ha_no_error)
ret_val = ok_user_response;
else if (resp != he_stale_nonce)
ret_val = access_denied_user_response;
} else if (user_resp == access_denied_user_response)
ret_val = access_denied_user_response;
}
if (resp != he_memory_too_small && resp != ha_no_error)
resp = has_www_auth("", 1, req->internal_realm, resp);
return ret_val;
}
int __attribute__ ((__noinline__, __noclone__))
authent_author(request *req)
{
struct realm *realm;
char *user_name = ((void *)0);
struct user_info *user_item = ((void *)0);
int res = 0;
asm ("");
realm = realms;
if (__builtin_strcmp("Wsd", realm->name) == 0) {
req->internal_realm = ws_realm;
is_digest(&user_name);
}
if (authenticate_user(req, &user_name, &user_item) < 0) {
if (user_name != ((void *)0))
req->user = user_name;
res = -2;
goto authent_author_return;
}
if (is_member_of_groups(user_item, realm->groups) < 0)
res = -1;
authent_author_return:
return res;
}
int good0, good1, good2;
__attribute__ ((__noinline__, __noclone__))
char *foo(void)
{
asm ("");
good0++;
return "";
}
__attribute__ ((__noinline__, __noclone__))
char *ha_get_string_value(void)
{
asm ("");
good1++;
return "f";
}
__attribute__ ((__noinline__, __noclone__))
har has_auth_user(const char *a, const char *b, realm_type c, char *d, size_t e)
{
asm ("");
if (*a != 'z' || a[1] != 0 || b != 0 || c != axis_realm || *d != 0
|| e != 1)
__builtin_abort ();
return ha_no_error;
}
__attribute__ ((__noinline__, __noclone__))
har has_www_auth(char *a, size_t b, realm_type c, har d)
{
(void)(*a+b+c+d);
asm ("");
__builtin_abort ();
}
char *strdupped_user = "me";
__attribute__((__malloc__, __noclone__, __noinline__))
char* g_strdup (const char *str)
{
asm ("");
if (*str != 'f')
__builtin_abort ();
good2++;
return strdupped_user;
}
__attribute__((__noclone__, __noinline__))
void g_free (void * mem)
{
(void)mem;
asm ("");
__builtin_abort ();
}
struct user_info me = { .name = "me", .no_groups = 1, .groups = {42}, .next = 0};
struct user_info you = { .name = "you", .next = &me};
struct realm_group xgroups = { .name = "*", .id = 42, .next = 0};
int main(void)
{
char *orig_user = "?";
struct realm r = { .name = "x", .space = "space?", .groups = &xgroups, .next = 0};
request req = { .user = orig_user, .realm = "!", .authent = "z",
.internal_realm = axis_realm};
realms = &r;
users = &you;
if (authent_author (&req) != 0 || good0 != 1 || good1 != 1 || good2 != 1
|| req.user != orig_user
|| req.internal_realm != axis_realm)
__builtin_abort ();
__builtin_exit (0);
}
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