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Fix incorrect ACL behavior when CIDR notation of "/0" is used.

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AST-2010-003



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@248946 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Michelson
2010-02-25 22:41:48 +00:00
parent a0af2cff0e
commit a1af5f4f72
1 changed files with 8 additions and 1 deletions
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9
main/acl.c
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@@ -298,7 +298,14 @@ struct ast_ha *ast_append_ha(const char *sense, const char *stuff, struct ast_ha
if (!strchr(nm, '.')) {
if ((sscanf(nm, "%30d", &x) == 1) && (x >= 0) && (x <= 32)) {
ha->netmask.s_addr = htonl(0xFFFFFFFF << (32 - x));
if (x == 0) {
/* This is special-cased to prevent unpredictable
* behavior of shifting left 32 bits
*/
ha->netmask.s_addr = 0;
} else {
ha->netmask.s_addr = htonl(0xFFFFFFFF << (32 - x));
}
} else {
ast_log(LOG_WARNING, "Invalid CIDR in %s\n", stuff);
ast_free(ha);