void *
ngx_stream_map_find(ngx_stream_session_t *s, ngx_stream_map_t *map,
ngx_str_t *match)
{
void *value;
u_char *low;
size_t len;
ngx_uint_t key;
len = match->len;
if (len) {
low = ngx_pnalloc(s->connection->pool, len);
if (low == NULL) {
return NULL;
}
} else {
low = NULL;
}
key = ngx_hash_strlow(low, match->data, len);
value = ngx_hash_find_combined(&map->hash, key, low, len);
if (value) {
return value;
}
#if (NGX_PCRE)
if (len && map->nregex) {
ngx_int_t n;
ngx_uint_t i;
ngx_stream_map_regex_t *reg;
reg = map->regex;
for (i = 0; i < map->nregex; i++) {
n = ngx_stream_regex_exec(s, reg[i].regex, match);
if (n == NGX_OK) {
return reg[i].value;
}
if (n == NGX_DECLINED) {
continue;
}
/* NGX_ERROR */
return NULL;
}
}
#endif
return NULL;
}
static ngx_int_t
ngx_http_map_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
uintptr_t data)
{
ngx_http_map_ctx_t *map = (ngx_http_map_ctx_t *) data;
size_t len;
u_char *name;
ngx_uint_t key, i;
ngx_http_variable_value_t *vv, *value;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http map started");
vv = ngx_http_get_flushed_variable(r, map->index);
if (vv == NULL || vv->not_found) {
*v = *map->default_value;
return NGX_OK;
}
len = vv->len;
if (len && map->hostnames && vv->data[len - 1] == '.') {
len--;
}
if (len == 0) {
*v = *map->default_value;
return NGX_OK;
}
name = ngx_palloc(r->pool, len);
if (name == NULL) {
return NGX_ERROR;
}
key = 0;
for (i = 0; i < len; i++) {
name[i] = ngx_tolower(vv->data[i]);
key = ngx_hash(key, name[i]);
}
value = ngx_hash_find_combined(&map->hash, key, name, len);
if (value) {
*v = *value;
} else {
*v = *map->default_value;
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http map: \"%v\" \"%v\"", vv, v);
return NGX_OK;
}
static ngx_int_t
ngx_http_map_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
uintptr_t data)
{
ngx_http_map_ctx_t *map = (ngx_http_map_ctx_t *) data;
size_t len;
ngx_str_t val;
ngx_uint_t key;
ngx_http_variable_value_t *value;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http map started");
if (ngx_http_complex_value(r, &map->value, &val) != NGX_OK) {
return NGX_ERROR;
}
len = val.len;
if (len && map->hostnames && val.data[len - 1] == '.') {
len--;
}
key = ngx_hash_strlow(val.data, val.data, len);
value = ngx_hash_find_combined(&map->hash, key, val.data, len);
if (value == NULL) {
value = map->default_value;
}
if (!value->valid) {
value = ngx_http_get_flushed_variable(r, (ngx_uint_t) value->data);
if (value == NULL || value->not_found) {
value = &ngx_http_variable_null_value;
}
}
*v = *value;
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http map: \"%v\" \"%v\"", &val, v);
return NGX_OK;
}
void *
ngx_http_map_find(ngx_http_request_t *r, ngx_http_map_t *map, ngx_uint_t key,
u_char *text, size_t len, ngx_str_t *match)
{
void *p;
p = ngx_hash_find_combined(&map->hash, key, text, len);
if (p) {
return p;
}
#if (NGX_PCRE)
if (len && map->nregex) {
ngx_int_t n;
ngx_uint_t i;
ngx_http_map_regex_t *reg;
reg = map->regex;
for (i = 0; i < map->nregex; i++) {
n = ngx_http_regex_exec(r, reg[i].regex, match);
if (n == NGX_OK) {
return reg[i].value;
}
if (n == NGX_DECLINED) {
continue;
}
/* NGX_ERROR */
return NULL;
}
}
#endif
return NULL;
}
void find_test(ngx_hash_combined_t *hash, ngx_str_t addr[], int num)
{
ngx_uint_t key;
int loop;
char prefix[] = " ";
for (loop = 0; loop < num; loop++)
{
key = ngx_hash_key_lc(addr[loop].data, addr[loop].len);
ngx_str_t *value = ngx_hash_find_combined(hash, key, addr[loop].data, addr[loop].len);
if (value)
{
printf("(url = \"%s\"%.*s, key = %-10d) found, (ip = \"%.*s%.*s\")\n",
addr[loop].data, Max_Url_Len - addr[loop].len, prefix, key, value->len, value->data, Max_Ip_Len - value->len, prefix);
}
else
{
printf("(url = \"%s\"%.*s, key = %-10d) not found!\n",
addr[loop].data, Max_Url_Len - addr[loop].len, prefix, key);
}
}
}
static ngx_int_t
ngx_http_referer_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
uintptr_t data)
{
u_char *p, *ref, *last;
size_t len;
ngx_str_t *uri;
ngx_uint_t i, key;
ngx_http_referer_conf_t *rlcf;
u_char buf[256];
rlcf = ngx_http_get_module_loc_conf(r, ngx_http_referer_module);
if (rlcf->hash.hash.buckets == NULL
&& rlcf->hash.wc_head == NULL
&& rlcf->hash.wc_tail == NULL
#if (NGX_PCRE)
&& rlcf->regex == NULL
#endif
)
{
goto valid;
}
if (r->headers_in.referer == NULL) {
if (rlcf->no_referer) {
goto valid;
}
goto invalid;
}
len = r->headers_in.referer->value.len;
ref = r->headers_in.referer->value.data;
if (len >= sizeof("http://i.ru") - 1) {
last = ref + len;
if (ngx_strncasecmp(ref, (u_char *) "http://", 7) == 0) {
ref += 7;
goto valid_scheme;
} else if (ngx_strncasecmp(ref, (u_char *) "https://", 8) == 0) {
ref += 8;
goto valid_scheme;
}
}
if (rlcf->blocked_referer) {
goto valid;
}
goto invalid;
valid_scheme:
i = 0;
key = 0;
for (p = ref; p < last; p++) {
if (*p == '/' || *p == ':') {
break;
}
buf[i] = ngx_tolower(*p);
key = ngx_hash(key, buf[i++]);
if (i == 256) {
goto invalid;
}
}
uri = ngx_hash_find_combined(&rlcf->hash, key, buf, p - ref);
if (uri) {
goto uri;
}
#if (NGX_PCRE)
if (rlcf->regex) {
ngx_int_t rc;
ngx_str_t referer;
referer.len = len - 7;
referer.data = ref;
rc = ngx_regex_exec_array(rlcf->regex, &referer, r->connection->log);
if (rc == NGX_OK) {
goto valid;
}
if (rc == NGX_ERROR) {
return rc;
}
/* NGX_DECLINED */
}
#endif
invalid:
*v = ngx_http_variable_true_value;
return NGX_OK;
uri:
for ( /* void */ ; p < last; p++) {
if (*p == '/') {
break;
}
}
len = last - p;
if (uri == NGX_HTTP_REFERER_NO_URI_PART) {
goto valid;
}
if (len < uri->len || ngx_strncmp(uri->data, p, uri->len) != 0) {
goto invalid;
}
valid:
*v = ngx_http_variable_null_value;
return NGX_OK;
}
static ngx_int_t
ngx_http_find_virtual_server(ngx_connection_t *c,
ngx_http_virtual_names_t *virtual_names, ngx_str_t *host,
ngx_http_request_t *r, ngx_http_core_srv_conf_t **cscfp)
{
ngx_http_core_srv_conf_t *cscf;
if (virtual_names == NULL) {
return NGX_DECLINED;
}
cscf = ngx_hash_find_combined(&virtual_names->names,
ngx_hash_key(host->data, host->len),
host->data, host->len);
if (cscf) {
*cscfp = cscf;
return NGX_OK;
}
#if (NGX_PCRE)
if (host->len && virtual_names->nregex) {
ngx_int_t n;
ngx_uint_t i;
ngx_http_server_name_t *sn;
sn = virtual_names->regex;
#if (NGX_HTTP_SSL && defined SSL_CTRL_SET_TLSEXT_HOSTNAME)
if (r == NULL) {
ngx_http_connection_t *hc;
for (i = 0; i < virtual_names->nregex; i++) {
n = ngx_regex_exec(sn[i].regex->regex, host, NULL, 0);
if (n == NGX_REGEX_NO_MATCHED) {
continue;
}
if (n >= 0) {
hc = c->data;
hc->ssl_servername_regex = sn[i].regex;
*cscfp = sn[i].server;
return NGX_OK;
}
ngx_log_error(NGX_LOG_ALERT, c->log, 0,
ngx_regex_exec_n " failed: %i "
"on \"%V\" using \"%V\"",
n, host, &sn[i].regex->name);
return NGX_ERROR;
}
return NGX_DECLINED;
}
#endif /* NGX_HTTP_SSL && defined SSL_CTRL_SET_TLSEXT_HOSTNAME */
for (i = 0; i < virtual_names->nregex; i++) {
n = ngx_http_regex_exec(r, sn[i].regex, host);
if (n == NGX_DECLINED) {
continue;
}
if (n == NGX_OK) {
*cscfp = sn[i].server;
return NGX_OK;
}
return NGX_ERROR;
}
}
#endif /* NGX_PCRE */
return NGX_DECLINED;
}