This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
*/
#include "includes.h"
+#include "system/network.h"
+#include "lib/socket/socket.h"
+#include "system/locale.h"
+#include "lib/util/util_net.h"
#define FAIL (-1)
#define ALLONES ((uint32_t)0xFFFFFFFF)
/* masked_match - match address against netnumber/netmask */
-static BOOL masked_match(TALLOC_CTX *mem_ctx, const char *tok, const char *slash, const char *s)
+static bool masked_match(TALLOC_CTX *mem_ctx, const char *tok, const char *slash, const char *s)
{
uint32_t net;
uint32_t mask;
char *tok_cpy;
if ((addr = interpret_addr(s)) == INADDR_NONE)
- return False;
+ return false;
tok_cpy = talloc_strdup(mem_ctx, tok);
tok_cpy[PTR_DIFF(slash,tok)] = '\0';
if (net == INADDR_NONE || mask == INADDR_NONE) {
DEBUG(0,("access: bad net/mask access control: %s\n", tok));
- return False;
+ return false;
}
return (addr & mask) == (net & mask);
}
/* string_match - match string against token */
-static BOOL string_match(TALLOC_CTX *mem_ctx, const char *tok,const char *s, char *invalid_char)
+static bool string_match(TALLOC_CTX *mem_ctx, const char *tok,const char *s, char *invalid_char)
{
size_t tok_len;
size_t str_len;
*invalid_char = '\0';
- /* Return True if a token has the magic value "ALL". Return
+ /* Return true if a token has the magic value "ALL". Return
* FAIL if the token is "FAIL". If the token starts with a "."
- * (domain name), return True if it matches the last fields of
+ * (domain name), return true if it matches the last fields of
* the string. If the token has the magic value "LOCAL",
- * return True if the string does not contain a "."
+ * return true if the string does not contain a "."
* character. If the token ends on a "." (network number),
- * return True if it matches the first fields of the
+ * return true if it matches the first fields of the
* string. If the token begins with a "@" (netgroup name),
- * return True if the string is a (host) member of the
- * netgroup. Return True if the token fully matches the
+ * return true if the string is a (host) member of the
+ * netgroup. Return true if the token fully matches the
* string. If the token is a netnumber/netmask pair, return
- * True if the address is a member of the specified subnet.
+ * true if the address is a member of the specified subnet.
*/
if (tok[0] == '.') { /* domain: match last fields */
if ((str_len = strlen(s)) > (tok_len = strlen(tok))
&& strcasecmp(tok, s + str_len - tok_len)==0) {
- return True;
+ return true;
}
} else if (tok[0] == '@') { /* netgroup: look it up */
DEBUG(0,("access: netgroup support is not available\n"));
- return False;
+ return false;
} else if (strcmp(tok, "ALL")==0) { /* all: match any */
- return True;
+ return true;
} else if (strcmp(tok, "FAIL")==0) { /* fail: match any */
return FAIL;
} else if (strcmp(tok, "LOCAL")==0) { /* local: no dots */
if (strchr(s, '.') == 0 && strcasecmp(s, "unknown") != 0) {
- return True;
+ return true;
}
} else if (strcasecmp(tok, s)==0) { /* match host name or address */
- return True;
+ return true;
} else if (tok[(tok_len = strlen(tok)) - 1] == '.') { /* network */
if (strncmp(tok, s, tok_len) == 0)
- return True;
+ return true;
} else if ((cut = strchr(tok, '/')) != 0) { /* netnumber/netmask */
if (isdigit((int)s[0]) && masked_match(mem_ctx, tok, cut, s))
- return True;
+ return true;
} else if (strchr(tok, '*') != 0) {
*invalid_char = '*';
} else if (strchr(tok, '?') != 0) {
*invalid_char = '?';
}
- return False;
+ return false;
}
struct client_addr {
};
/* client_match - match host name and address against token */
-static BOOL client_match(TALLOC_CTX *mem_ctx, const char *tok, struct client_addr *client)
+static bool client_match(TALLOC_CTX *mem_ctx, const char *tok, struct client_addr *client)
{
- BOOL match;
+ bool match;
char invalid_char = '\0';
/*
}
/* list_match - match an item against a list of tokens with exceptions */
-static BOOL list_match(TALLOC_CTX *mem_ctx, const char **list, struct client_addr *client)
+static bool list_match(TALLOC_CTX *mem_ctx, const char **list, struct client_addr *client)
{
- BOOL match = False;
+ bool match = false;
if (!list)
- return False;
+ return false;
/*
* Process tokens one at a time. We have exhausted all possible matches
for (; *list ; list++) {
if (strcmp(*list, "EXCEPT")==0) /* EXCEPT: give up */
break;
- if ((match = client_match(mem_ctx, *list, client))) /* True or FAIL */
+ if ((match = client_match(mem_ctx, *list, client))) /* true or FAIL */
break;
}
- /* Process exceptions to True or FAIL matches. */
- if (match != False) {
+ /* Process exceptions to true or FAIL matches. */
+ if (match != false) {
while (*list && strcmp(*list, "EXCEPT")!=0)
list++;
for (; *list; list++) {
if (client_match(mem_ctx, *list, client)) /* Exception Found */
- return False;
+ return false;
}
}
}
/* return true if access should be allowed */
-static BOOL allow_access_internal(TALLOC_CTX *mem_ctx,
+static bool allow_access_internal(TALLOC_CTX *mem_ctx,
const char **deny_list,const char **allow_list,
const char *cname, const char *caddr)
{
list_match(mem_ctx, deny_list, &client) &&
(!allow_list ||
!list_match(mem_ctx, allow_list, &client))) {
- return False;
+ return false;
}
- return True;
+ return true;
}
/* if theres no deny list and no allow list then allow access */
if ((!deny_list || *deny_list == 0) &&
(!allow_list || *allow_list == 0)) {
- return True;
+ return true;
}
/* if there is an allow list but no deny list then allow only hosts
/* if there are both types of list then allow all hosts on the
allow list */
if (list_match(mem_ctx, allow_list, &client))
- return True;
+ return true;
/* if there are both types of list and it's not on the allow then
allow it if its not on the deny */
if (list_match(mem_ctx, deny_list, &client))
- return False;
+ return false;
- return True;
+ return true;
}
/* return true if access should be allowed */
-static BOOL allow_access(TALLOC_CTX *mem_ctx,
- const char **deny_list, const char **allow_list,
- const char *cname, const char *caddr)
+bool allow_access(TALLOC_CTX *mem_ctx,
+ const char **deny_list, const char **allow_list,
+ const char *cname, const char *caddr)
{
- BOOL ret;
+ bool ret;
char *nc_cname = talloc_strdup(mem_ctx, cname);
char *nc_caddr = talloc_strdup(mem_ctx, caddr);
if (!nc_cname || !nc_caddr) {
- return False;
+ return false;
}
ret = allow_access_internal(mem_ctx, deny_list, allow_list, nc_cname, nc_caddr);
/* return true if the char* contains ip addrs only. Used to avoid
gethostbyaddr() calls */
-static BOOL only_ipaddrs_in_list(const char** list)
+static bool only_ipaddrs_in_list(const char** list)
{
- BOOL only_ip = True;
+ bool only_ip = true;
if (!list)
- return True;
+ return true;
for (; *list ; list++) {
/* factor out the special strings */
* have a '/' in them
*/
if ((strchr(*list, '/')) == NULL) {
- only_ip = False;
+ only_ip = false;
DEBUG(3,("only_ipaddrs_in_list: list has non-ip address (%s)\n", *list));
break;
}
}
/* return true if access should be allowed to a service for a socket */
-BOOL socket_check_access(struct socket_context *sock,
+bool socket_check_access(struct socket_context *sock,
const char *service_name,
const char **allow_list, const char **deny_list)
{
- BOOL ret;
- const char *name="", *addr;
+ bool ret;
+ const char *name="";
+ struct socket_address *addr;
TALLOC_CTX *mem_ctx;
if ((!deny_list || *deny_list==0) &&
(!allow_list || *allow_list==0)) {
- return True;
+ return true;
}
mem_ctx = talloc_init("socket_check_access");
if (!mem_ctx) {
- return False;
+ return false;
}
addr = socket_get_peer_addr(sock, mem_ctx);
+ if (!addr) {
+ DEBUG(0,("socket_check_access: Denied connection from unknown host: could not get peer address from kernel\n"));
+ talloc_free(mem_ctx);
+ return false;
+ }
/* bypass gethostbyaddr() calls if the lists only contain IP addrs */
if (!only_ipaddrs_in_list(allow_list) ||
!only_ipaddrs_in_list(deny_list)) {
name = socket_get_peer_name(sock, mem_ctx);
if (!name) {
- name = addr;
+ name = addr->addr;
}
}
if (!addr) {
DEBUG(0,("socket_check_access: Denied connection from unknown host\n"));
talloc_free(mem_ctx);
- return False;
+ return false;
}
- ret = allow_access(mem_ctx, deny_list, allow_list, name, addr);
+ ret = allow_access(mem_ctx, deny_list, allow_list, name, addr->addr);
if (ret) {
DEBUG(2,("socket_check_access: Allowed connection to '%s' from %s (%s)\n",
- service_name, name, addr));
+ service_name, name, addr->addr));
} else {
DEBUG(0,("socket_check_access: Denied connection to '%s' from %s (%s)\n",
- service_name, name, addr));
+ service_name, name, addr->addr));
}
talloc_free(mem_ctx);
git.samba.org / nivanova / samba-autobuild / .git / blobdiff