# HG changeset patch
# User Igor Sysoev <http://sysoev.ru>
# Date 1238356800 -14400
# Node ID 9eda3153223b42932fec477da26be67a8a33b781
# Parent  29602be4685054cd10e55f343cb0c1a2aa44b2d6
nginx 0.7.45

    *) Change: now the "proxy_cache" and the "proxy_cache_valid" can be set
       on different levels.

    *) Change: the "clean_time" parameter of the "proxy_cache_path"
       directive is canceled.

    *) Feature: the "max_size" parameter of the "proxy_cache_path"
       directive.

    *) Feature: the ngx_http_fastcgi_module preliminary cache support.

    *) Feature: now on shared memory allocation errors directive and zone
       names are logged.

    *) Bugfix: the directive "add_header last-modified ''" did not delete a
       "Last-Modified" response header line; the bug had appeared in 0.7.44.

    *) Bugfix: a relative path in the "auth_basic_user_file" directive
       given without variables did not work; the bug had appeared in
       0.7.44.
       Thanks to Jerome Loyet.

    *) Bugfix: in an "alias" directive given using variables without
       references to captures of regular expressions; the bug had appeared
       in 0.7.42.

diff --git a/auto/os/features b/auto/os/features
--- a/auto/os/features
+++ b/auto/os/features
@@ -98,7 +98,7 @@ if test -z "$NGX_KQUEUE_CHECKED"; then
         ngx_feature_name="NGX_HAVE_TIMER_EVENT"
         ngx_feature_run=yes
         ngx_feature_incs="#include <sys/event.h>
-#include <sys/time.h>"
+                          #include <sys/time.h>"
         ngx_feature_path=
         ngx_feature_libs=
         ngx_feature_test="int      kq;
diff --git a/auto/os/linux b/auto/os/linux
--- a/auto/os/linux
+++ b/auto/os/linux
@@ -11,7 +11,8 @@ CORE_SRCS="$UNIX_SRCS $LINUX_SRCS"
 ngx_spacer='
 '
 
-CC_AUX_FLAGS="$CC_AUX_FLAGS -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"
+cc_aux_flags="$CC_AUX_FLAGS"
+CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"
 
 
 # Linux kernel version
@@ -60,12 +61,12 @@ fi
 
 # sendfile()
 
-CC_AUX_FLAGS="$CC_AUX_FLAGS -D_GNU_SOURCE"
+CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE"
 ngx_feature="sendfile()"
 ngx_feature_name="NGX_HAVE_SENDFILE"
 ngx_feature_run=yes
 ngx_feature_incs="#include <sys/sendfile.h>
-#include <errno.h>"
+                  #include <errno.h>"
 ngx_feature_path=
 ngx_feature_libs=
 ngx_feature_test="int s = 0, fd = 1;
@@ -81,12 +82,12 @@ fi
 
 # sendfile64()
 
-CC_AUX_FLAGS="$CC_AUX_FLAGS -D_FILE_OFFSET_BITS=64"
+CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"
 ngx_feature="sendfile64()"
 ngx_feature_name="NGX_HAVE_SENDFILE64"
 ngx_feature_run=yes
 ngx_feature_incs="#include <sys/sendfile.h>
-#include <errno.h>"
+                  #include <errno.h>"
 ngx_feature_path=
 ngx_feature_libs=
 ngx_feature_test="int s = 0, fd = 1;
@@ -121,3 +122,6 @@ ngx_feature_libs=
 ngx_feature_test="long mask = 0;
                   sched_setaffinity(0, 32, (cpu_set_t *) &mask)"
 . auto/feature
+
+
+CC_AUX_FLAGS=$cc_aux_flags
diff --git a/auto/unix b/auto/unix
--- a/auto/unix
+++ b/auto/unix
@@ -190,8 +190,8 @@ ngx_feature='mmap("/dev/zero", MAP_SHARE
 ngx_feature_name="NGX_HAVE_MAP_DEVZERO"
 ngx_feature_run=yes
 ngx_feature_incs="#include <sys/mman.h>
-#include <sys/stat.h>
-#include <fcntl.h>"
+                  #include <sys/stat.h>
+                  #include <fcntl.h>"
 ngx_feature_path=
 ngx_feature_libs=
 ngx_feature_test='void *p; int  fd;
@@ -205,7 +205,7 @@ ngx_feature="System V shared memory"
 ngx_feature_name="NGX_HAVE_SYSVSHM"
 ngx_feature_run=yes
 ngx_feature_incs="#include <sys/ipc.h>
-#include <sys/shm.h>"
+                  #include <sys/shm.h>"
 ngx_feature_path=
 ngx_feature_libs=
 ngx_feature_test="int  id;
@@ -229,7 +229,7 @@ ngx_feature="ioctl(FIONBIO)"
 ngx_feature_name="NGX_HAVE_FIONBIO"
 ngx_feature_run=no
 ngx_feature_incs="#include <sys/ioctl.h>
-$NGX_INCLUDE_SYS_FILIO_H"
+                  $NGX_INCLUDE_SYS_FILIO_H"
 ngx_feature_path=
 ngx_feature_libs=
 ngx_feature_test="int i; i = FIONBIO"
diff --git a/src/core/nginx.h b/src/core/nginx.h
--- a/src/core/nginx.h
+++ b/src/core/nginx.h
@@ -8,7 +8,7 @@
 #define _NGINX_H_INCLUDED_
 
 
-#define NGINX_VERSION      "0.7.44"
+#define NGINX_VERSION      "0.7.45"
 #define NGINX_VER          "nginx/" NGINX_VERSION
 
 #define NGINX_VAR          "NGINX"
diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -23,6 +23,10 @@ typedef struct {
     ngx_array_t                   *fastcgi_lengths;
     ngx_array_t                   *fastcgi_values;
 
+#if (NGX_HTTP_CACHE)
+    ngx_http_complex_value_t       cache_key;
+#endif
+
 #if (NGX_PCRE)
     ngx_regex_t                   *split_regex;
     ngx_str_t                      split_name;
@@ -116,6 +120,9 @@ typedef struct {
 
 static ngx_int_t ngx_http_fastcgi_eval(ngx_http_request_t *r,
     ngx_http_fastcgi_loc_conf_t *flcf);
+#if (NGX_HTTP_CACHE)
+static ngx_int_t ngx_http_fastcgi_create_key(ngx_http_request_t *r);
+#endif
 static ngx_int_t ngx_http_fastcgi_create_request(ngx_http_request_t *r);
 static ngx_int_t ngx_http_fastcgi_reinit_request(ngx_http_request_t *r);
 static ngx_int_t ngx_http_fastcgi_process_header(ngx_http_request_t *r);
@@ -144,6 +151,13 @@ static char *ngx_http_fastcgi_split_path
     ngx_command_t *cmd, void *conf);
 static char *ngx_http_fastcgi_store(ngx_conf_t *cf, ngx_command_t *cmd,
     void *conf);
+#if (NGX_HTTP_CACHE)
+static char *ngx_http_fastcgi_cache(ngx_conf_t *cf, ngx_command_t *cmd,
+    void *conf);
+static char *ngx_http_fastcgi_cache_key(ngx_conf_t *cf, ngx_command_t *cmd,
+    void *conf);
+#endif
+
 static char *ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post,
     void *data);
 
@@ -169,6 +183,9 @@ static ngx_conf_bitmask_t  ngx_http_fast
 };
 
 
+ngx_module_t  ngx_http_fastcgi_module;
+
+
 static ngx_command_t  ngx_http_fastcgi_commands[] = {
 
     { ngx_string("fastcgi_pass"),
@@ -283,6 +300,52 @@ static ngx_command_t  ngx_http_fastcgi_c
       offsetof(ngx_http_fastcgi_loc_conf_t, upstream.busy_buffers_size_conf),
       NULL },
 
+#if (NGX_HTTP_CACHE)
+
+    { ngx_string("fastcgi_cache"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_http_fastcgi_cache,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      0,
+      NULL },
+
+    { ngx_string("fastcgi_cache_key"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_http_fastcgi_cache_key,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      0,
+      NULL },
+
+    { ngx_string("fastcgi_cache_path"),
+      NGX_HTTP_MAIN_CONF|NGX_CONF_2MORE,
+      ngx_http_file_cache_set_slot,
+      0,
+      0,
+      &ngx_http_fastcgi_module },
+
+    { ngx_string("fastcgi_cache_valid"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
+      ngx_http_file_cache_valid_set_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_valid),
+      NULL },
+
+    { ngx_string("proxy_cache_min_uses"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_min_uses),
+      NULL },
+
+    { ngx_string("fastcgi_cache_use_stale"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
+      ngx_conf_set_bitmask_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_use_stale),
+      &ngx_http_fastcgi_next_upstream_masks },
+
+#endif
+
     { ngx_string("fastcgi_temp_path"),
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
       ngx_conf_set_path_slot,
@@ -491,6 +554,9 @@ ngx_http_fastcgi_handler(ngx_http_reques
 
     u->conf = &flcf->upstream;
 
+#if (NGX_HTTP_CACHE)
+    u->create_key = ngx_http_fastcgi_create_key;
+#endif
     u->create_request = ngx_http_fastcgi_create_request;
     u->reinit_request = ngx_http_fastcgi_reinit_request;
     u->process_header = ngx_http_fastcgi_process_header;
@@ -544,7 +610,7 @@ ngx_http_fastcgi_eval(ngx_http_request_t
 
     if (u.no_port) {
         ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
-                          "no port in upstream \"%V\"", &u.url);
+                      "no port in upstream \"%V\"", &u.url);
         return NGX_ERROR;
     }
 
@@ -569,6 +635,31 @@ ngx_http_fastcgi_eval(ngx_http_request_t
 }
 
 
+#if (NGX_HTTP_CACHE)
+
+static ngx_int_t
+ngx_http_fastcgi_create_key(ngx_http_request_t *r)
+{
+    ngx_str_t                    *key;
+    ngx_http_fastcgi_loc_conf_t  *flcf;
+
+    key = ngx_array_push(&r->cache->keys);
+    if (key == NULL) {
+        return NGX_ERROR;
+    }
+
+    flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
+
+    if (ngx_http_complex_value(r, &flcf->cache_key, key) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    return NGX_OK;
+}
+
+#endif
+
+
 static ngx_int_t
 ngx_http_fastcgi_create_request(ngx_http_request_t *r)
 {
@@ -1276,12 +1367,9 @@ ngx_http_fastcgi_process_header(ngx_http
                     u->headers_in.status_line.data = (u_char *) "200 OK";
                 }
 
-                u->state->status = u->headers_in.status_n;
-#if 0
-                if (u->cacheable) {
-                    u->cacheable = ngx_http_upstream_is_cacheable(r);
+                if (u->state) {
+                    u->state->status = u->headers_in.status_n;
                 }
-#endif
 
                 break;
             }
@@ -1730,6 +1818,7 @@ ngx_http_fastcgi_create_loc_conf(ngx_con
      *
      *     conf->upstream.bufs.num = 0;
      *     conf->upstream.next_upstream = 0;
+     *     conf->upstream.use_stale_cache = 0;
      *     conf->upstream.temp_path = NULL;
      *     conf->upstream.hide_headers_hash = { NULL, 0 };
      *     conf->upstream.uri = { 0, NULL };
@@ -1760,6 +1849,12 @@ ngx_http_fastcgi_create_loc_conf(ngx_con
     conf->upstream.pass_request_headers = NGX_CONF_UNSET;
     conf->upstream.pass_request_body = NGX_CONF_UNSET;
 
+#if (NGX_HTTP_CACHE)
+    conf->upstream.cache = NGX_CONF_UNSET_PTR;
+    conf->upstream.cache_min_uses = NGX_CONF_UNSET_UINT;
+    conf->upstream.cache_valid = NGX_CONF_UNSET_PTR;
+#endif
+
     conf->upstream.hide_headers = NGX_CONF_UNSET_PTR;
     conf->upstream.pass_headers = NGX_CONF_UNSET_PTR;
 
@@ -1936,6 +2031,41 @@ ngx_http_fastcgi_merge_loc_conf(ngx_conf
         return NGX_CONF_ERROR;
     }
 
+#if (NGX_HTTP_CACHE)
+
+    ngx_conf_merge_ptr_value(conf->upstream.cache,
+                              prev->upstream.cache, NULL);
+
+    if (conf->upstream.cache && conf->upstream.cache->data == NULL) {
+        ngx_shm_zone_t  *shm_zone;
+
+        shm_zone = conf->upstream.cache;
+
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "\"fastcgi_cache\" zone \"%V\" is unknown",
+                           &shm_zone->name);
+
+        return NGX_CONF_ERROR;
+    }
+
+    ngx_conf_merge_uint_value(conf->upstream.cache_min_uses,
+                              prev->upstream.cache_min_uses, 1);
+
+    ngx_conf_merge_bitmask_value(conf->upstream.cache_use_stale,
+                              prev->upstream.cache_use_stale,
+                              (NGX_CONF_BITMASK_SET
+                               |NGX_HTTP_UPSTREAM_FT_OFF));
+
+    if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_OFF) {
+        conf->upstream.cache_use_stale = NGX_CONF_BITMASK_SET
+                                         |NGX_HTTP_UPSTREAM_FT_OFF;
+    }
+
+    ngx_conf_merge_ptr_value(conf->upstream.cache_valid,
+                             prev->upstream.cache_valid, NULL);
+
+#endif
+
     ngx_conf_merge_value(conf->upstream.pass_request_headers,
                               prev->upstream.pass_request_headers, 1);
     ngx_conf_merge_value(conf->upstream.pass_request_body,
@@ -2409,6 +2539,66 @@ ngx_http_fastcgi_store(ngx_conf_t *cf, n
 }
 
 
+#if (NGX_HTTP_CACHE)
+
+static char *
+ngx_http_fastcgi_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+    ngx_http_fastcgi_loc_conf_t *flcf = conf;
+
+    ngx_str_t  *value;
+
+    value = cf->args->elts;
+
+    if (flcf->upstream.cache != NGX_CONF_UNSET_PTR) {
+        return "is duplicate";
+    }
+
+    if (ngx_strcmp(value[1].data, "off") == 0) {
+        flcf->upstream.cache = NULL;
+        return NGX_CONF_OK;
+    }
+
+    flcf->upstream.cache = ngx_shared_memory_add(cf, &value[1], 0,
+                                                 &ngx_http_fastcgi_module);
+    if (flcf->upstream.cache == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_fastcgi_cache_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+    ngx_http_fastcgi_loc_conf_t *flcf = conf;
+
+    ngx_str_t                         *value;
+    ngx_http_compile_complex_value_t   ccv;
+
+    value = cf->args->elts;
+
+    if (flcf->cache_key.value.len) {
+        return "is duplicate";
+    }
+
+    ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
+
+    ccv.cf = cf;
+    ccv.value = &value[1];
+    ccv.complex_value = &flcf->cache_key;
+
+    if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
+        return NGX_CONF_ERROR;
+    }
+
+    return NGX_CONF_OK;
+}
+
+#endif
+
+
 static char *
 ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post, void *data)
 {
diff --git a/src/http/modules/ngx_http_headers_filter_module.c b/src/http/modules/ngx_http_headers_filter_module.c
--- a/src/http/modules/ngx_http_headers_filter_module.c
+++ b/src/http/modules/ngx_http_headers_filter_module.c
@@ -608,6 +608,11 @@ ngx_http_headers_add(ngx_conf_t *cf, ngx
         break;
     }
 
+    if (value[2].len == 0) {
+        ngx_memzero(&hv->value, sizeof(ngx_http_complex_value_t));
+        return NGX_CONF_OK;
+    }
+
     ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
 
     ccv.cf = cf;
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -324,7 +324,7 @@ static ngx_command_t  ngx_http_proxy_com
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
       ngx_http_proxy_cache,
       NGX_HTTP_LOC_CONF_OFFSET,
-      offsetof(ngx_http_proxy_loc_conf_t, upstream.cache),
+      0,
       NULL },
 
     { ngx_string("proxy_cache_path"),
@@ -2068,10 +2068,6 @@ ngx_http_proxy_merge_loc_conf(ngx_conf_t
     ngx_conf_merge_ptr_value(conf->upstream.cache_valid,
                              prev->upstream.cache_valid, NULL);
 
-    if (conf->upstream.cache_valid == NULL) {
-        conf->upstream.cache = NULL;
-    }
-
 #endif
 
     if (conf->method.len == 0) {
diff --git a/src/http/modules/perl/nginx.pm b/src/http/modules/perl/nginx.pm
--- a/src/http/modules/perl/nginx.pm
+++ b/src/http/modules/perl/nginx.pm
@@ -47,7 +47,7 @@ our @EXPORT = qw(
     HTTP_INSUFFICIENT_STORAGE
 );
 
-our $VERSION = '0.7.44';
+our $VERSION = '0.7.45';
 
 require XSLoader;
 XSLoader::load('nginx', $VERSION);
diff --git a/src/http/ngx_http_file_cache.c b/src/http/ngx_http_file_cache.c
--- a/src/http/ngx_http_file_cache.c
+++ b/src/http/ngx_http_file_cache.c
@@ -251,6 +251,7 @@ ngx_http_file_cache_open(ngx_http_reques
                    "http file cache fd: %d", of.fd);
 
     c->file.fd = of.fd;
+    c->file.log = r->connection->log;
 
     c->buf = ngx_create_temp_buf(r->pool, c->body_start);
     if (c->buf == NULL) {
@@ -355,10 +356,7 @@ ngx_http_file_cache_exists(ngx_http_requ
         if (fcn->uses >= r->cache->min_uses) {
 
             r->cache->exists = fcn->exists;
-
-            if (fcn->body_start) {
-                r->cache->body_start = fcn->body_start;
-            }
+            r->cache->body_start = fcn->body_start;
 
             rc = NGX_OK;
 
@@ -816,8 +814,8 @@ ngx_http_file_cache_expire(ngx_http_file
                 ngx_rbtree_delete(cache->rbtree, &fcn->node);
 
                 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
-                              "ignore long locked inactive cache entry %*s",
-                              NGX_HTTP_CACHE_KEY_LEN, key);
+                       "ignore long locked inactive cache entry %*s, count:%d",
+                       2 * NGX_HTTP_CACHE_KEY_LEN, key, fcn->count);
             }
 
             if (tries++ < 10) {
@@ -895,8 +893,9 @@ ngx_http_file_cache_cleaner(void *data)
 
     now = ngx_time();
 
-    if (now >= cache->next_clean_time) {
-
+    if (now >= cache->next_clean_time
+        && now >= cache->created + cache->inactive)
+    {
         ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0,
                       "clean unused cache files");