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*) refactor ngx_ptocidr()

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*) allow address without bitmask
*) thus now ngx_http_geo_module accepts addresses without bitmask
This commit is contained in:
Igor Sysoev 2008-08-26 14:19:37 +00:00
parent caa4a45c0f
commit 9c388c0a7f
4 changed files with 23 additions and 41 deletions
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39
src/core/ngx_inet.c
View File

@ -102,43 +102,48 @@ ngx_inet_ntop(int family, void *addr, u_char *text, size_t len)
ngx_int_t
ngx_ptocidr(ngx_str_t *text, void *cidr)
{
ngx_int_t m;
ngx_uint_t i;
u_char *addr, *mask, *last;
ngx_int_t shift;
ngx_inet_cidr_t *in_cidr;
in_cidr = cidr;
addr = text->data;
last = addr + text->len;
for (i = 0; i < text->len; i++) {
if (text->data[i] == '/') {
break;
}
}
mask = ngx_strlchr(addr, last, '/');
if (i == text->len) {
return NGX_ERROR;
}
in_cidr->addr = ngx_inet_addr(addr, (mask ? mask : last) - addr);
text->data[i] = '\0';
in_cidr->addr = inet_addr((char *) text->data);
text->data[i] = '/';
if (in_cidr->addr == INADDR_NONE) {
return NGX_ERROR;
}
m = ngx_atoi(&text->data[i + 1], text->len - (i + 1));
if (m == NGX_ERROR) {
if (mask == NULL) {
in_cidr->mask = 0xffffffff;
return NGX_OK;
}
mask++;
shift = ngx_atoi(mask, last - mask);
if (shift == NGX_ERROR) {
return NGX_ERROR;
}
if (m == 0) {
if (shift == 0) {
/* the x86 compilers use the shl instruction that shifts by modulo 32 */
in_cidr->mask = 0;
if (in_cidr->addr == 0) {
return NGX_OK;
}
in_cidr->mask = htonl((ngx_uint_t) (0 - (1 << (32 - m))));
return NGX_DONE;
}
in_cidr->mask = htonl((ngx_uint_t) (0 - (1 << (32 - shift))));
if (in_cidr->addr == (in_cidr->addr & in_cidr->mask)) {
return NGX_OK;

7
src/event/ngx_event.c
View File

@ -1051,13 +1051,6 @@ ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
return NGX_CONF_ERROR;
}
dc->addr = inet_addr((char *) value[1].data);
if (dc->addr != INADDR_NONE) {
dc->mask = 0xffffffff;
return NGX_CONF_OK;
}
rc = ngx_ptocidr(&value[1], &in_cidr);
if (rc == NGX_DONE) {

8
src/http/modules/ngx_http_access_module.c
View File

@ -166,14 +166,6 @@ ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
return NGX_CONF_OK;
}
rule->addr = inet_addr((char *) value[1].data);
if (rule->addr != INADDR_NONE) {
rule->mask = 0xffffffff;
return NGX_CONF_OK;
}
rc = ngx_ptocidr(&value[1], &in_cidr);
if (rc == NGX_ERROR) {

8
src/http/modules/ngx_http_realip_module.c
View File

@ -251,14 +251,6 @@ ngx_http_realip_from(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
value = cf->args->elts;
from->addr = inet_addr((char *) value[1].data);
if (from->addr != INADDR_NONE) {
from->mask = 0xffffffff;
return NGX_CONF_OK;
}
rc = ngx_ptocidr(&value[1], &in_cidr);
if (rc == NGX_ERROR) {