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Code cleanup of acl.c

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Reported by dimas
Closes issue #10784


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@86278 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2007-10-18 07:23:41 +00:00
parent 7e23779b01
commit 9203f4fedb
1 changed files with 49 additions and 42 deletions
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91
main/acl.c
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@@ -123,64 +123,71 @@ struct ast_ha *ast_duplicate_ha_list(struct ast_ha *original)
struct ast_ha *ast_append_ha(char *sense, char *stuff, struct ast_ha *path, int *error)
{
struct ast_ha *ha;
char *nm = "255.255.255.255";
char tmp[256];
char *nm;
struct ast_ha *prev = NULL;
struct ast_ha *ret;
int x, z;
unsigned int y;
int x;
char *tmp = strdupa(stuff);
ret = path;
while (path) {
prev = path;
path = path->next;
}
if ((ha = ast_malloc(sizeof(*ha)))) {
ast_copy_string(tmp, stuff, sizeof(tmp));
nm = strchr(tmp, '/');
if (!nm) {
nm = "255.255.255.255";
} else {
*nm = '\0';
nm++;
}
ha = ast_malloc(sizeof(*ha));
if (!ha)
return ret;
nm = strchr(tmp, '/');
if (!nm) {
/* assume /32. Yes, htonl does not do anything for this particular mask
but we better use it to show we remember about byte order */
ha->netmask.s_addr = htonl(0xFFFFFFFF);
} else {
*nm = '\0';
nm++;
if (!strchr(nm, '.')) {
if ((sscanf(nm, "%d", &x) == 1) && (x >= 0) && (x <= 32)) {
y = 0;
for (z = 0; z < x; z++) {
y >>= 1;
y |= 0x80000000;
}
ha->netmask.s_addr = htonl(y);
if ((sscanf(nm, "%d", &x) == 1) && (x >= 0) && (x <= 32))
ha->netmask.s_addr = htonl(0xFFFFFFFF << (32 - x));
else {
ast_log(LOG_WARNING, "Invalid CIDR in %s\n", stuff);
ast_free(ha);
if (error)
*error = 1;
return ret;
}
} else if (!inet_aton(nm, &ha->netmask)) {
ast_log(LOG_WARNING, "%s is not a valid netmask\n", nm);
ast_log(LOG_WARNING, "Invalid mask in %s\n", stuff);
ast_free(ha);
if (error)
*error = 1;
ast_free(ha);
return ret;
}
if (!inet_aton(tmp, &ha->netaddr)) {
ast_log(LOG_WARNING, "%s is not a valid IP\n", tmp);
if (error)
*error = 1;
ast_free(ha);
return ret;
}
ha->netaddr.s_addr &= ha->netmask.s_addr;
if (!strncasecmp(sense, "p", 1)) {
ha->sense = AST_SENSE_ALLOW;
} else {
ha->sense = AST_SENSE_DENY;
}
ha->next = NULL;
if (prev) {
prev->next = ha;
} else {
ret = ha;
}
}
ast_debug(1, "%s/%s appended to acl for peer\n", stuff, nm);
if (!inet_aton(tmp, &ha->netaddr)) {
ast_log(LOG_WARNING, "Invalid IP address in %s\n", stuff);
ast_free(ha);
if (error)
*error = 1;
return ret;
}
ha->netaddr.s_addr &= ha->netmask.s_addr;
ha->sense = strncasecmp(sense, "p", 1) ? AST_SENSE_DENY : AST_SENSE_ALLOW;
ha->next = NULL;
if (prev) {
prev->next = ha;
} else {
ret = ha;
}
ast_debug(1, "%s/%s sense %d appended to acl for peer\n", ast_strdupa(ast_inet_ntoa(ha->netaddr)), ast_strdupa(ast_inet_ntoa(ha->netmask)), ha->sense);
return ret;
}