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ngx_cache_purge_module.c
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ngx_cache_purge_module.c
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/*
* Copyright (c) 2009-2012, FRiCKLE <[email protected]>
* Copyright (c) 2009-2012, Piotr Sikora <[email protected]>
* All rights reserved.
*
* This project was fully funded by yo.se.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <nginx.h>
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#if (NGX_HTTP_CACHE)
typedef struct {
ngx_flag_t enable;
ngx_str_t method;
ngx_array_t *access; /* array of ngx_in_cidr_t */
ngx_array_t *access6; /* array of ngx_in6_cidr_t */
} ngx_http_cache_purge_conf_t;
typedef struct {
# if (NGX_HTTP_FASTCGI)
ngx_http_cache_purge_conf_t fastcgi;
# endif /* NGX_HTTP_FASTCGI */
# if (NGX_HTTP_PROXY)
ngx_http_cache_purge_conf_t proxy;
# endif /* NGX_HTTP_PROXY */
# if (NGX_HTTP_SCGI)
ngx_http_cache_purge_conf_t scgi;
# endif /* NGX_HTTP_SCGI */
# if (NGX_HTTP_UWSGI)
ngx_http_cache_purge_conf_t uwsgi;
# endif /* NGX_HTTP_UWSGI */
ngx_http_cache_purge_conf_t *conf;
ngx_http_handler_pt handler;
ngx_http_handler_pt original_handler;
} ngx_http_cache_purge_loc_conf_t;
# if (NGX_HTTP_FASTCGI)
char *ngx_http_fastcgi_cache_purge_conf(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
ngx_int_t ngx_http_fastcgi_cache_purge_handler(ngx_http_request_t *r);
# endif /* NGX_HTTP_FASTCGI */
# if (NGX_HTTP_PROXY)
char *ngx_http_proxy_cache_purge_conf(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
ngx_int_t ngx_http_proxy_cache_purge_handler(ngx_http_request_t *r);
# endif /* NGX_HTTP_PROXY */
# if (NGX_HTTP_SCGI)
char *ngx_http_scgi_cache_purge_conf(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
ngx_int_t ngx_http_scgi_cache_purge_handler(ngx_http_request_t *r);
# endif /* NGX_HTTP_SCGI */
# if (NGX_HTTP_UWSGI)
char *ngx_http_uwsgi_cache_purge_conf(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
ngx_int_t ngx_http_uwsgi_cache_purge_handler(ngx_http_request_t *r);
# endif /* NGX_HTTP_UWSGI */
ngx_int_t ngx_http_cache_purge_access_handler(ngx_http_request_t *r);
ngx_int_t ngx_http_cache_purge_access(ngx_array_t *a, ngx_array_t *a6,
struct sockaddr *s);
ngx_int_t ngx_http_cache_purge_send_response(ngx_http_request_t *r);
ngx_int_t ngx_http_cache_purge_init(ngx_http_request_t *r,
ngx_http_file_cache_t *cache, ngx_http_complex_value_t *cache_key);
void ngx_http_cache_purge_handler(ngx_http_request_t *r);
ngx_int_t ngx_http_file_cache_purge(ngx_http_request_t *r);
char *ngx_http_cache_purge_conf(ngx_conf_t *cf,
ngx_http_cache_purge_conf_t *cpcf);
void *ngx_http_cache_purge_create_loc_conf(ngx_conf_t *cf);
char *ngx_http_cache_purge_merge_loc_conf(ngx_conf_t *cf,
void *parent, void *child);
static ngx_command_t ngx_http_cache_purge_module_commands[] = {
# if (NGX_HTTP_FASTCGI)
{ ngx_string("fastcgi_cache_purge"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_fastcgi_cache_purge_conf,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
# endif /* NGX_HTTP_FASTCGI */
# if (NGX_HTTP_PROXY)
{ ngx_string("proxy_cache_purge"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_proxy_cache_purge_conf,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
# endif /* NGX_HTTP_PROXY */
# if (NGX_HTTP_SCGI)
{ ngx_string("scgi_cache_purge"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_scgi_cache_purge_conf,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
# endif /* NGX_HTTP_SCGI */
# if (NGX_HTTP_UWSGI)
{ ngx_string("uwsgi_cache_purge"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_uwsgi_cache_purge_conf,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
# endif /* NGX_HTTP_UWSGI */
ngx_null_command
};
static ngx_http_module_t ngx_http_cache_purge_module_ctx = {
NULL, /* preconfiguration */
NULL, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_cache_purge_create_loc_conf, /* create location configuration */
ngx_http_cache_purge_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_http_cache_purge_module = {
NGX_MODULE_V1,
&ngx_http_cache_purge_module_ctx, /* module context */
ngx_http_cache_purge_module_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static char ngx_http_cache_purge_success_page_top[] =
"<html>" CRLF
"<head><title>Successful purge</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>Successful purge</h1>" CRLF
;
static char ngx_http_cache_purge_success_page_tail[] =
CRLF "</center>" CRLF
"<hr><center>" NGINX_VER "</center>" CRLF
"</body>" CRLF
"</html>" CRLF
;
# if (NGX_HTTP_FASTCGI)
extern ngx_module_t ngx_http_fastcgi_module;
typedef struct {
ngx_http_upstream_conf_t upstream;
ngx_str_t index;
ngx_array_t *flushes;
ngx_array_t *params_len;
ngx_array_t *params;
ngx_array_t *params_source;
ngx_array_t *catch_stderr;
ngx_array_t *fastcgi_lengths;
ngx_array_t *fastcgi_values;
# if defined(nginx_version) && (nginx_version >= 8040)
ngx_hash_t headers_hash;
ngx_uint_t header_params;
# endif /* nginx_version >= 8040 */
# if defined(nginx_version) && (nginx_version >= 1001004)
ngx_flag_t keep_conn;
# endif /* nginx_version >= 1001004 */
ngx_http_complex_value_t cache_key;
# if (NGX_PCRE)
ngx_regex_t *split_regex;
ngx_str_t split_name;
# endif /* NGX_PCRE */
} ngx_http_fastcgi_loc_conf_t;
char *
ngx_http_fastcgi_cache_purge_conf(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf)
{
ngx_http_compile_complex_value_t ccv;
ngx_http_cache_purge_loc_conf_t *cplcf;
ngx_http_core_loc_conf_t *clcf;
ngx_http_fastcgi_loc_conf_t *flcf;
ngx_str_t *value;
cplcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_cache_purge_module);
/* check for duplicates / collisions */
if (cplcf->fastcgi.enable != NGX_CONF_UNSET) {
return "is duplicate";
}
if (cf->args->nelts != 3) {
return ngx_http_cache_purge_conf(cf, &cplcf->fastcgi);
}
if (cf->cmd_type & (NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF)) {
return "(separate location syntax) is not allowed here";
}
flcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_fastcgi_module);
if (flcf->upstream.cache != NGX_CONF_UNSET_PTR
&& flcf->upstream.cache != NULL)
{
return "is incompatible with \"fastcgi_cache\"";
}
if (flcf->upstream.upstream || flcf->fastcgi_lengths) {
return "is incompatible with \"fastcgi_pass\"";
}
if (flcf->upstream.store > 0 || flcf->upstream.store_lengths) {
return "is incompatible with \"fastcgi_store\"";
}
value = cf->args->elts;
/* set fastcgi_cache part */
flcf->upstream.cache = ngx_shared_memory_add(cf, &value[1], 0,
&ngx_http_fastcgi_module);
if (flcf->upstream.cache == NULL) {
return NGX_CONF_ERROR;
}
/* set fastcgi_cache_key part */
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[2];
ccv.complex_value = &flcf->cache_key;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
/* set handler */
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
cplcf->fastcgi.enable = 0;
clcf->handler = ngx_http_fastcgi_cache_purge_handler;
return NGX_CONF_OK;
}
ngx_int_t
ngx_http_fastcgi_cache_purge_handler(ngx_http_request_t *r)
{
ngx_http_fastcgi_loc_conf_t *flcf;
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (ngx_http_cache_purge_init(r, flcf->upstream.cache->data,
&flcf->cache_key)
!= NGX_OK)
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
# if defined(nginx_version) && (nginx_version >= 8011)
r->main->count++;
# endif
ngx_http_cache_purge_handler(r);
return NGX_DONE;
}
# endif /* NGX_HTTP_FASTCGI */
# if (NGX_HTTP_PROXY)
extern ngx_module_t ngx_http_proxy_module;
typedef struct {
ngx_str_t key_start;
ngx_str_t schema;
ngx_str_t host_header;
ngx_str_t port;
ngx_str_t uri;
} ngx_http_proxy_vars_t;
typedef struct {
ngx_http_upstream_conf_t upstream;
ngx_array_t *flushes;
ngx_array_t *body_set_len;
ngx_array_t *body_set;
ngx_array_t *headers_set_len;
ngx_array_t *headers_set;
ngx_hash_t headers_set_hash;
ngx_array_t *headers_source;
# if defined(nginx_version) && (nginx_version < 8040)
ngx_array_t *headers_names;
# endif /* nginx_version < 8040 */
ngx_array_t *proxy_lengths;
ngx_array_t *proxy_values;
ngx_array_t *redirects;
# if defined(nginx_version) && (nginx_version >= 1001015)
ngx_array_t *cookie_domains;
ngx_array_t *cookie_paths;
# endif /* nginx_version >= 1001015 */
ngx_str_t body_source;
ngx_str_t method;
ngx_str_t location;
ngx_str_t url;
ngx_http_complex_value_t cache_key;
ngx_http_proxy_vars_t vars;
ngx_flag_t redirect;
# if defined(nginx_version) && (nginx_version >= 1001004)
ngx_uint_t http_version;
# endif /* nginx_version >= 1001004 */
ngx_uint_t headers_hash_max_size;
ngx_uint_t headers_hash_bucket_size;
} ngx_http_proxy_loc_conf_t;
char *
ngx_http_proxy_cache_purge_conf(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_compile_complex_value_t ccv;
ngx_http_cache_purge_loc_conf_t *cplcf;
ngx_http_core_loc_conf_t *clcf;
ngx_http_proxy_loc_conf_t *plcf;
ngx_str_t *value;
cplcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_cache_purge_module);
/* check for duplicates / collisions */
if (cplcf->proxy.enable != NGX_CONF_UNSET) {
return "is duplicate";
}
if (cf->args->nelts != 3) {
return ngx_http_cache_purge_conf(cf, &cplcf->proxy);
}
if (cf->cmd_type & (NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF)) {
return "(separate location syntax) is not allowed here";
}
plcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_proxy_module);
if (plcf->upstream.cache != NGX_CONF_UNSET_PTR
&& plcf->upstream.cache != NULL)
{
return "is incompatible with \"proxy_cache\"";
}
if (plcf->upstream.upstream || plcf->proxy_lengths) {
return "is incompatible with \"proxy_pass\"";
}
if (plcf->upstream.store > 0 || plcf->upstream.store_lengths) {
return "is incompatible with \"proxy_store\"";
}
value = cf->args->elts;
/* set proxy_cache part */
plcf->upstream.cache = ngx_shared_memory_add(cf, &value[1], 0,
&ngx_http_proxy_module);
if (plcf->upstream.cache == NULL) {
return NGX_CONF_ERROR;
}
/* set proxy_cache_key part */
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[2];
ccv.complex_value = &plcf->cache_key;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
/* set handler */
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
cplcf->proxy.enable = 0;
clcf->handler = ngx_http_proxy_cache_purge_handler;
return NGX_CONF_OK;
}
ngx_int_t
ngx_http_proxy_cache_purge_handler(ngx_http_request_t *r)
{
ngx_http_proxy_loc_conf_t *plcf;
plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
if (ngx_http_cache_purge_init(r, plcf->upstream.cache->data,
&plcf->cache_key)
!= NGX_OK)
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
# if defined(nginx_version) && (nginx_version >= 8011)
r->main->count++;
# endif
ngx_http_cache_purge_handler(r);
return NGX_DONE;
}
# endif /* NGX_HTTP_PROXY */
# if (NGX_HTTP_SCGI)
extern ngx_module_t ngx_http_scgi_module;
typedef struct {
ngx_http_upstream_conf_t upstream;
ngx_array_t *flushes;
ngx_array_t *params_len;
ngx_array_t *params;
ngx_array_t *params_source;
ngx_hash_t headers_hash;
ngx_uint_t header_params;
ngx_array_t *scgi_lengths;
ngx_array_t *scgi_values;
ngx_http_complex_value_t cache_key;
} ngx_http_scgi_loc_conf_t;
char *
ngx_http_scgi_cache_purge_conf(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_compile_complex_value_t ccv;
ngx_http_cache_purge_loc_conf_t *cplcf;
ngx_http_core_loc_conf_t *clcf;
ngx_http_scgi_loc_conf_t *slcf;
ngx_str_t *value;
cplcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_cache_purge_module);
/* check for duplicates / collisions */
if (cplcf->scgi.enable != NGX_CONF_UNSET) {
return "is duplicate";
}
if (cf->args->nelts != 3) {
return ngx_http_cache_purge_conf(cf, &cplcf->scgi);
}
if (cf->cmd_type & (NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF)) {
return "(separate location syntax) is not allowed here";
}
slcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_scgi_module);
if (slcf->upstream.cache != NGX_CONF_UNSET_PTR
&& slcf->upstream.cache != NULL)
{
return "is incompatible with \"scgi_cache\"";
}
if (slcf->upstream.upstream || slcf->scgi_lengths) {
return "is incompatible with \"scgi_pass\"";
}
if (slcf->upstream.store > 0 || slcf->upstream.store_lengths) {
return "is incompatible with \"scgi_store\"";
}
value = cf->args->elts;
/* set scgi_cache part */
slcf->upstream.cache = ngx_shared_memory_add(cf, &value[1], 0,
&ngx_http_scgi_module);
if (slcf->upstream.cache == NULL) {
return NGX_CONF_ERROR;
}
/* set scgi_cache_key part */
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[2];
ccv.complex_value = &slcf->cache_key;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
/* set handler */
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
cplcf->scgi.enable = 0;
clcf->handler = ngx_http_scgi_cache_purge_handler;
return NGX_CONF_OK;
}
ngx_int_t
ngx_http_scgi_cache_purge_handler(ngx_http_request_t *r)
{
ngx_http_scgi_loc_conf_t *slcf;
slcf = ngx_http_get_module_loc_conf(r, ngx_http_scgi_module);
if (ngx_http_cache_purge_init(r, slcf->upstream.cache->data,
&slcf->cache_key)
!= NGX_OK)
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
# if defined(nginx_version) && (nginx_version >= 8011)
r->main->count++;
# endif
ngx_http_cache_purge_handler(r);
return NGX_DONE;
}
# endif /* NGX_HTTP_SCGI */
# if (NGX_HTTP_UWSGI)
extern ngx_module_t ngx_http_uwsgi_module;
typedef struct {
ngx_http_upstream_conf_t upstream;
ngx_array_t *flushes;
ngx_array_t *params_len;
ngx_array_t *params;
ngx_array_t *params_source;
ngx_hash_t headers_hash;
ngx_uint_t header_params;
ngx_array_t *uwsgi_lengths;
ngx_array_t *uwsgi_values;
ngx_http_complex_value_t cache_key;
ngx_str_t uwsgi_string;
ngx_uint_t modifier1;
ngx_uint_t modifier2;
} ngx_http_uwsgi_loc_conf_t;
char *
ngx_http_uwsgi_cache_purge_conf(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_compile_complex_value_t ccv;
ngx_http_cache_purge_loc_conf_t *cplcf;
ngx_http_core_loc_conf_t *clcf;
ngx_http_uwsgi_loc_conf_t *ulcf;
ngx_str_t *value;
cplcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_cache_purge_module);
/* check for duplicates / collisions */
if (cplcf->uwsgi.enable != NGX_CONF_UNSET) {
return "is duplicate";
}
if (cf->args->nelts != 3) {
return ngx_http_cache_purge_conf(cf, &cplcf->uwsgi);
}
if (cf->cmd_type & (NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF)) {
return "(separate location syntax) is not allowed here";
}
ulcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_uwsgi_module);
if (ulcf->upstream.cache != NGX_CONF_UNSET_PTR
&& ulcf->upstream.cache != NULL)
{
return "is incompatible with \"uwsgi_cache\"";
}
if (ulcf->upstream.upstream || ulcf->uwsgi_lengths) {
return "is incompatible with \"uwsgi_pass\"";
}
if (ulcf->upstream.store > 0 || ulcf->upstream.store_lengths) {
return "is incompatible with \"uwsgi_store\"";
}
value = cf->args->elts;
/* set uwsgi_cache part */
ulcf->upstream.cache = ngx_shared_memory_add(cf, &value[1], 0,
&ngx_http_uwsgi_module);
if (ulcf->upstream.cache == NULL) {
return NGX_CONF_ERROR;
}
/* set uwsgi_cache_key part */
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[2];
ccv.complex_value = &ulcf->cache_key;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
/* set handler */
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
cplcf->uwsgi.enable = 0;
clcf->handler = ngx_http_uwsgi_cache_purge_handler;
return NGX_CONF_OK;
}
ngx_int_t
ngx_http_uwsgi_cache_purge_handler(ngx_http_request_t *r)
{
ngx_http_uwsgi_loc_conf_t *ulcf;
ulcf = ngx_http_get_module_loc_conf(r, ngx_http_uwsgi_module);
if (ngx_http_cache_purge_init(r, ulcf->upstream.cache->data,
&ulcf->cache_key)
!= NGX_OK)
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
# if defined(nginx_version) && (nginx_version >= 8011)
r->main->count++;
# endif
ngx_http_cache_purge_handler(r);
return NGX_DONE;
}
# endif /* NGX_HTTP_UWSGI */
ngx_int_t
ngx_http_cache_purge_access_handler(ngx_http_request_t *r)
{
ngx_http_cache_purge_loc_conf_t *cplcf;
cplcf = ngx_http_get_module_loc_conf(r, ngx_http_cache_purge_module);
if (r->method_name.len != cplcf->conf->method.len
|| (ngx_strncmp(r->method_name.data, cplcf->conf->method.data,
r->method_name.len)))
{
return cplcf->original_handler(r);
}
if ((cplcf->conf->access || cplcf->conf->access6)
&& ngx_http_cache_purge_access(cplcf->conf->access,
cplcf->conf->access6,
r->connection->sockaddr) != NGX_OK)
{
return NGX_HTTP_FORBIDDEN;
}
if (cplcf->handler == NULL) {
return NGX_HTTP_NOT_FOUND;
}
return cplcf->handler(r);
}
ngx_int_t
ngx_http_cache_purge_access(ngx_array_t *access, ngx_array_t *access6,
struct sockaddr *s)
{
in_addr_t inaddr;
ngx_in_cidr_t *a;
ngx_uint_t i;
# if (NGX_HAVE_INET6)
struct in6_addr *inaddr6;
ngx_in6_cidr_t *a6;
u_char *p;
ngx_uint_t n;
# endif /* NGX_HAVE_INET6 */
switch (s->sa_family) {
case AF_INET:
if (access == NULL) {
return NGX_DECLINED;
}
inaddr = ((struct sockaddr_in *) s)->sin_addr.s_addr;
# if (NGX_HAVE_INET6)
ipv4:
# endif /* NGX_HAVE_INET6 */
a = access->elts;
for (i = 0; i < access->nelts; i++) {
if ((inaddr & a[i].mask) == a[i].addr) {
return NGX_OK;
}
}
return NGX_DECLINED;
# if (NGX_HAVE_INET6)
case AF_INET6:
inaddr6 = &((struct sockaddr_in6 *) s)->sin6_addr;
p = inaddr6->s6_addr;
if (access && IN6_IS_ADDR_V4MAPPED(inaddr6)) {
inaddr = p[12] << 24;
inaddr += p[13] << 16;
inaddr += p[14] << 8;
inaddr += p[15];
inaddr = htonl(inaddr);
goto ipv4;
}
if (access6 == NULL) {
return NGX_DECLINED;
}
a6 = access6->elts;
for (i = 0; i < access6->nelts; i++) {
for (n = 0; n < 16; n++) {
if ((p[n] & a6[i].mask.s6_addr[n]) != a6[i].addr.s6_addr[n]) {
goto next;
}
}
return NGX_OK;
next:
continue;
}
return NGX_DECLINED;
# endif /* NGX_HAVE_INET6 */
}
return NGX_DECLINED;
}
ngx_int_t
ngx_http_cache_purge_send_response(ngx_http_request_t *r)
{
ngx_chain_t out;
ngx_buf_t *b;
ngx_str_t *key;
ngx_int_t rc;
size_t len;
key = r->cache->keys.elts;
len = sizeof(ngx_http_cache_purge_success_page_top) - 1
+ sizeof(ngx_http_cache_purge_success_page_tail) - 1
+ sizeof("<br>Key : ") - 1 + sizeof(CRLF "<br>Path: ") - 1
+ key[0].len + r->cache->file.name.len;
r->headers_out.content_type.len = sizeof("text/html") - 1;
r->headers_out.content_type.data = (u_char *) "text/html";
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = len;
if (r->method == NGX_HTTP_HEAD) {
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
}
b = ngx_create_temp_buf(r->pool, len);
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
out.buf = b;
out.next = NULL;
b->last = ngx_cpymem(b->last, ngx_http_cache_purge_success_page_top,
sizeof(ngx_http_cache_purge_success_page_top) - 1);
b->last = ngx_cpymem(b->last, "<br>Key : ", sizeof("<br>Key : ") - 1);
b->last = ngx_cpymem(b->last, key[0].data, key[0].len);
b->last = ngx_cpymem(b->last, CRLF "<br>Path: ",
sizeof(CRLF "<br>Path: ") - 1);
b->last = ngx_cpymem(b->last, r->cache->file.name.data,
r->cache->file.name.len);
b->last = ngx_cpymem(b->last, ngx_http_cache_purge_success_page_tail,
sizeof(ngx_http_cache_purge_success_page_tail) - 1);
b->last_buf = 1;
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
return ngx_http_output_filter(r, &out);
}
ngx_int_t
ngx_http_cache_purge_init(ngx_http_request_t *r, ngx_http_file_cache_t *cache,
ngx_http_complex_value_t *cache_key)
{
ngx_http_cache_t *c;
ngx_str_t *key;
ngx_int_t rc;
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return NGX_ERROR;
}
c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
if (c == NULL) {
return NGX_ERROR;
}
rc = ngx_array_init(&c->keys, r->pool, 1, sizeof(ngx_str_t));
if (rc != NGX_OK) {
return NGX_ERROR;
}
key = ngx_array_push(&c->keys);
if (key == NULL) {
return NGX_ERROR;
}
rc = ngx_http_complex_value(r, cache_key, key);
if (rc != NGX_OK) {
return NGX_ERROR;
}
r->cache = c;
c->body_start = ngx_pagesize;
c->file_cache = cache;
c->file.log = r->connection->log;
ngx_http_file_cache_create_key(r);
return NGX_OK;
}
void
ngx_http_cache_purge_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
# if (NGX_HAVE_FILE_AIO)
if (r->aio) {
return;
}
# endif
rc = ngx_http_file_cache_purge(r);
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http file cache purge: %i, \"%s\"",
rc, r->cache->file.name.data);
switch (rc) {
case NGX_OK:
r->write_event_handler = ngx_http_request_empty_handler;
ngx_http_finalize_request(r, ngx_http_cache_purge_send_response(r));
return;
case NGX_DECLINED:
ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
return;
# if (NGX_HAVE_FILE_AIO)
case NGX_AGAIN:
r->write_event_handler = ngx_http_cache_purge_handler;
return;
# endif
default:
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
}
}
ngx_int_t
ngx_http_file_cache_purge(ngx_http_request_t *r)
{
ngx_http_file_cache_t *cache;
ngx_http_cache_t *c;
switch (ngx_http_file_cache_open(r)) {
case NGX_OK:
case NGX_HTTP_CACHE_STALE:
# if defined(nginx_version) \
&& ((nginx_version >= 8001) \
|| ((nginx_version < 8000) && (nginx_version >= 7060)))
case NGX_HTTP_CACHE_UPDATING:
# endif
break;
case NGX_DECLINED:
return NGX_DECLINED;
# if (NGX_HAVE_FILE_AIO)
case NGX_AGAIN:
return NGX_AGAIN;
# endif
default:
return NGX_ERROR;
}
c = r->cache;
cache = c->file_cache;
/*
* delete file from disk but *keep* in-memory node,
* because other requests might still point to it.
*/
ngx_shmtx_lock(&cache->shpool->mutex);
if (!c->node->exists) {
/* race between concurrent purges, backoff */
ngx_shmtx_unlock(&cache->shpool->mutex);
return NGX_DECLINED;
}
# if defined(nginx_version) && (nginx_version >= 1000001)
cache->sh->size -= c->node->fs_size;
c->node->fs_size = 0;
# else
cache->sh->size -= (c->node->length + cache->bsize - 1) / cache->bsize;
c->node->length = 0;
# endif
c->node->exists = 0;
# if defined(nginx_version) \
&& ((nginx_version >= 8001) \
|| ((nginx_version < 8000) && (nginx_version >= 7060)))
c->node->updating = 0;
# endif
ngx_shmtx_unlock(&cache->shpool->mutex);
if (ngx_delete_file(c->file.name.data) == NGX_FILE_ERROR) {
/* entry in error log is enough, don't notice client */
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_delete_file_n " \"%s\" failed", c->file.name.data);
}
/* file deleted from cache */
return NGX_OK;