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nginx-0.3.45-RELEASE import 

*) Feature: the "ssl_verify_client", "ssl_verify_depth", and
       "ssl_client_certificate" directives.

    *) Change: the $request_method variable now returns the main request
       method.

    *) Change: the ° symbol codes were changed in koi-win conversion
       table.

    *) Feature: the euro and N symbols were added to koi-win conversion
       table.

    *) Bugfix: if nginx distributed the requests among several backends and
       some backend failed, then requests intended for this backend was
       directed to one live backend only instead of being distributed among
       the rest.
This commit is contained in:
Igor Sysoev 2006-05-06 16:28:56 +00:00
parent 46ffec1881
commit 8bbd64c5a6
12 changed files with 430 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
conf/koi-win
View File

@ -1,12 +1,12 @@
charset_map koi8-r windows-1251 {
80 88 ; # euro
95 95 ; # bullet
9A A0 ; #  
9C B0 ; # °
9E B7 ; # ·
A3 B8 ; # small yo
@ -18,12 +18,16 @@ charset_map koi8-r windows-1251 {
AD B4 ; # small Ukrainian soft g
AE A2 ; # small Byelorussian short u
B0 B0 ; # °
B3 A8 ; # capital YO
B4 AA ; # capital Ukrainian YE
B6 B2 ; # capital Ukrainian I
B7 AF ; # capital Ukrainian J
B9 B9 ; # No
BD A5 ; # capital Ukrainian soft G
BE A1 ; # capital Byelorussian short U

55
docs/xml/nginx/changes.xml
View File

@ -9,6 +9,61 @@
<title lang="en">nginx changelog</title>
<changes ver="0.3.45" date="06.05.2006">
<change type="feature">
<para lang="ru">
ÄÉÒÅËÔÉ×Ù ssl_verify_client, ssl_verify_depth É ssl_client_certificate.
</para>
<para lang="en">
the "ssl_verify_client", "ssl_verify_depth", and "ssl_client_certificate"
directives.
</para>
</change>
<change type="change">
<para lang="ru">
ÔÅÐÅÒØ ÐÅÒÅÍÅÎÎÁÑ $request_method ×ÏÚ×ÒÁÝÁÅÔ ÍÅÔÏÄ ÔÏÌØËÏ ÏÓÎÏ×ÎÏÇÏ ÚÁÐÒÏÓÁ.
</para>
<para lang="en">
the $request_method variable now returns the main request method.
</para>
</change>
<change type="change">
<para lang="ru">
× ÔÁÂÌÉÃÅ ÐÅÒÅËÏÄÉÒÏ×ËÉ koi-win ÉÚÍÅÎÅÎÙ ËÏÄÙ ÓÉÍ×ÏÌÁ &amp;deg;.
</para>
<para lang="en">
the &amp;deg; symbol codes were changed in koi-win conversion table.
</para>
</change>
<change type="feature">
<para lang="ru">
× ÔÁÂÌÉÃÕ ÐÅÒÅËÏÄÉÒÏ×ËÉ koi-win ÄÏÂÁ×ÌÅÎÙ ÓÉÍ×ÏÌÙ Å×ÒÏ É ÎÏÍÅÒÁ.
</para>
<para lang="en">
the euro É N symbols were added to koi-win conversion table.
</para>
</change>
<change type="bugfix">
<para lang="ru">
ÅÓÌÉ nginx ÒÁÓÐÒÅÄÅÌÑÌ ÚÁÐÒÏÓÙ ÎÁ ÎÅÓËÏÌØËÏ ÍÁÛÉÎ, ÔÏ ÐÒÉ ÐÁÄÅÎÉÉ
ÏÄÎÏÊ ÉÚ ÎÉÈ ÚÁÐÒÏÓÙ, ÐÒÅÄÎÁÚÎÁÞÅÎÎÙÅ ÄÌÑ ÜÔÏÊ ÍÁÛÉÎÙ, ÐÅÒÅÎÁÐÒÁ×ÌÑÌÉÓØ ÔÏÌØËÏ
ÎÁ ÏÄÎÕ ÍÁÛÉÎÕ ×ÍÅÓÔÏ ÔÏÇÏ, ÞÔÏÂÙ ÒÁ×ÎÏÍÅÒÎÏ ÒÁÓÐÒÅÄÅÌÑÔØÓÑ ÍÅÖÄÕ ÏÓÔÁÌØÎÙÍÉ.
</para>
<para lang="en">
if nginx distributed the requests among several backends and some backend
failed, then requests intended for this backend was directed to one live
backend only instead of being distributed among the rest.
</para>
</change>
</changes>
<changes ver="0.3.44" date="04.05.2006">
<change type="feature">

2
src/core/nginx.h
View File

@ -8,7 +8,7 @@
#define _NGINX_H_INCLUDED_
#define NGINX_VER "nginx/0.3.44"
#define NGINX_VER "nginx/0.3.45"
#define NGINX_VAR "NGINX"
#define NGX_OLDPID_EXT ".oldbin"

111
src/event/ngx_event_connect.c
View File

@ -61,54 +61,75 @@ ngx_event_connect_peer(ngx_peer_connection_t *pc)
/* it's a first try - get a current peer */
pc->cur_peer = pc->peers->current;
for ( ;; ) {
pc->cur_peer = pc->peers->current;
peer = &pc->peers->peer[pc->cur_peer];
if (peer->max_fails == 0 || peer->fails <= peer->max_fails) {
break;
}
if (now - peer->accessed > peer->fail_timeout) {
peer->fails = 0;
break;
}
pc->peers->current++;
if (pc->peers->current >= pc->peers->number) {
pc->peers->current = 0;
}
pc->peers->weight = pc->peers->peer[pc->peers->current].weight;
pc->tries--;
if (pc->tries) {
continue;
}
goto failed;
}
pc->peers->weight--;
if (pc->peers->weight == 0) {
pc->peers->current++;
}
if (pc->peers->current >= pc->peers->number) {
pc->peers->current = 0;
}
if (pc->peers->weight == 0) {
pc->peers->weight = pc->peers->peer[pc->peers->current].weight;
}
}
for ( ;; ) {
peer = &pc->peers->peer[pc->cur_peer];
if (peer->max_fails == 0 || peer->fails <= peer->max_fails) {
break;
}
if (now - peer->accessed > peer->fail_timeout) {
peer->fails = 0;
break;
}
pc->cur_peer++;
if (pc->cur_peer >= pc->peers->number) {
pc->cur_peer = 0;
}
pc->tries--;
if (pc->tries == 0) {
/* all peers failed, mark them as live for quick recovery */
for (i = 0; i < pc->peers->number; i++) {
pc->peers->peer[i].fails = 0;
if (pc->peers->current >= pc->peers->number) {
pc->peers->current = 0;
}
/* ngx_unlock_mutex(pc->peers->mutex); */
pc->peers->weight = pc->peers->peer[pc->peers->current].weight;
}
return NGX_BUSY;
} else {
for ( ;; ) {
peer = &pc->peers->peer[pc->cur_peer];
if (peer->max_fails == 0 || peer->fails <= peer->max_fails) {
break;
}
if (now - peer->accessed > peer->fail_timeout) {
peer->fails = 0;
break;
}
pc->cur_peer++;
if (pc->cur_peer >= pc->peers->number) {
pc->cur_peer = 0;
}
pc->tries--;
if (pc->tries) {
continue;
}
goto failed;
}
}
}
@ -319,6 +340,18 @@ ngx_event_connect_peer(ngx_peer_connection_t *pc)
wev->ready = 1;
return NGX_OK;
failed:
/* all peers failed, mark them as live for quick recovery */
for (i = 0; i < pc->peers->number; i++) {
pc->peers->peer[i].fails = 0;
}
/* ngx_unlock_mutex(pc->peers->mutex); */
return NGX_BUSY;
}

105
src/event/ngx_event_openssl.c
View File

@ -164,7 +164,8 @@ ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
}
if (SSL_CTX_use_PrivateKey_file(ssl->ctx, (char *) key->data,
SSL_FILETYPE_PEM) == 0)
SSL_FILETYPE_PEM)
== 0)
{
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_use_PrivateKey_file(\"%s\") failed", key->data);
@ -175,6 +176,26 @@ ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
}
ngx_int_t
ngx_ssl_client_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert)
{
if (ngx_conf_full_name(cf->cycle, cert) == NGX_ERROR) {
return NGX_ERROR;
}
if (SSL_CTX_load_verify_locations(ssl->ctx, (char *) cert->data, NULL)
== 0)
{
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_load_verify_locations(\"%s\") failed",
cert->data);
return NGX_ERROR;
}
return NGX_OK;
}
ngx_int_t
ngx_ssl_generate_rsa512_key(ngx_ssl_t *ssl)
{
@ -1023,6 +1044,88 @@ ngx_ssl_get_cipher_name(ngx_connection_t *c)
}
ngx_int_t
ngx_ssl_get_subject_dn(ngx_connection_t *c, ngx_pool_t *pool, ngx_str_t *s)
{
char *p;
size_t len;
X509 *cert;
X509_NAME *name;
s->len = 0;
cert = SSL_get_peer_certificate(c->ssl->connection);
if (cert == NULL) {
return NGX_OK;
}
name = X509_get_subject_name(cert);
if (name == NULL) {
return NGX_ERROR;
}
p = X509_NAME_oneline(name, NULL, 0);
for (len = 0; p[len]; len++) { /* void */ }
s->len = len;
s->data = ngx_palloc(pool, len);
if (s->data == NULL) {
OPENSSL_free(p);
return NGX_ERROR;
}
ngx_memcpy(s->data, p, len);
OPENSSL_free(p);
return NGX_OK;
}
ngx_int_t
ngx_ssl_get_issuer_dn(ngx_connection_t *c, ngx_pool_t *pool, ngx_str_t *s)
{
char *p;
size_t len;
X509 *cert;
X509_NAME *name;
s->len = 0;
cert = SSL_get_peer_certificate(c->ssl->connection);
if (cert == NULL) {
return NGX_OK;
}
name = X509_get_issuer_name(cert);
if (name == NULL) {
return NGX_ERROR;
}
p = X509_NAME_oneline(name, NULL, 0);
for (len = 0; p[len]; len++) { /* void */ }
s->len = len;
s->data = ngx_palloc(pool, len);
if (s->data == NULL) {
OPENSSL_free(p);
return NGX_ERROR;
}
ngx_memcpy(s->data, p, len);
OPENSSL_free(p);
return NGX_OK;
}
static void *
ngx_openssl_create_conf(ngx_cycle_t *cycle)
{

11
src/event/ngx_event_openssl.h
View File

@ -31,6 +31,7 @@ typedef struct {
typedef struct {
SSL *connection;
ngx_int_t last;
ngx_buf_t *buf;
@ -60,10 +61,15 @@ typedef struct {
#define NGX_SSL_BUFSIZE 16384
#define NGX_SSL_VERIFY SSL_VERIFY_PEER
ngx_int_t ngx_ssl_init(ngx_log_t *log);
ngx_int_t ngx_ssl_create(ngx_ssl_t *ssl, ngx_uint_t protocols);
ngx_int_t ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
ngx_str_t *cert, ngx_str_t *key);
ngx_int_t ngx_ssl_client_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
ngx_str_t *cert);
ngx_int_t ngx_ssl_generate_rsa512_key(ngx_ssl_t *ssl);
ngx_int_t ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c,
ngx_uint_t flags);
@ -75,6 +81,11 @@ ngx_int_t ngx_ssl_set_session(ngx_connection_t *c, ngx_ssl_session_t *session);
u_char *ngx_ssl_get_protocol(ngx_connection_t *c);
u_char *ngx_ssl_get_cipher_name(ngx_connection_t *c);
ngx_int_t ngx_ssl_get_subject_dn(ngx_connection_t *c, ngx_pool_t *pool,
ngx_str_t *s);
ngx_int_t ngx_ssl_get_issuer_dn(ngx_connection_t *c, ngx_pool_t *pool,
ngx_str_t *s);
ngx_int_t ngx_ssl_handshake(ngx_connection_t *c);

109
src/http/modules/ngx_http_ssl_module.c
View File

@ -19,6 +19,10 @@ typedef u_char *(*ngx_ssl_variable_handler_pt)(ngx_connection_t *);
static ngx_int_t ngx_http_ssl_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_ssl_client_s_dn(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_ssl_client_i_dn(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_ssl_add_variables(ngx_conf_t *cf);
static void *ngx_http_ssl_create_srv_conf(ngx_conf_t *cf);
@ -43,7 +47,6 @@ static ngx_conf_bitmask_t ngx_http_ssl_protocols[] = {
};
static ngx_command_t ngx_http_ssl_commands[] = {
{ ngx_string("ssl"),
@ -81,6 +84,27 @@ static ngx_command_t ngx_http_ssl_commands[] = {
offsetof(ngx_http_ssl_srv_conf_t, ciphers),
NULL },
{ ngx_string("ssl_verify_client"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE,
ngx_conf_set_flag_slot,
NGX_HTTP_SRV_CONF_OFFSET,
offsetof(ngx_http_ssl_srv_conf_t, verify),
NULL },
{ ngx_string("ssl_verify_depth"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE,
ngx_conf_set_num_slot,
NGX_HTTP_SRV_CONF_OFFSET,
offsetof(ngx_http_ssl_srv_conf_t, verify_depth),
NULL },
{ ngx_string("ssl_client_certificate"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_HTTP_SRV_CONF_OFFSET,
offsetof(ngx_http_ssl_srv_conf_t, client_certificate),
NULL },
{ ngx_string("ssl_prefer_server_ciphers"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
@ -142,6 +166,12 @@ static ngx_http_variable_t ngx_http_ssl_vars[] = {
{ ngx_string("ssl_cipher"), NULL, ngx_http_ssl_variable,
(uintptr_t) ngx_ssl_get_cipher_name, NGX_HTTP_VAR_CHANGABLE, 0 },
{ ngx_string("ssl_client_s_dn"), NULL, ngx_http_ssl_client_s_dn,
0, NGX_HTTP_VAR_CHANGABLE, 0 },
{ ngx_string("ssl_client_i_dn"), NULL, ngx_http_ssl_client_i_dn,
0, NGX_HTTP_VAR_CHANGABLE, 0 },
{ ngx_null_string, NULL, NULL, 0, 0, 0 }
};
@ -179,6 +209,58 @@ ngx_http_ssl_variable(ngx_http_request_t *r,
}
static ngx_int_t
ngx_http_ssl_client_s_dn(ngx_http_request_t *r, ngx_http_variable_value_t *v,
uintptr_t data)
{
if (r->connection->ssl) {
if (ngx_ssl_get_subject_dn(r->connection, r->pool, (ngx_str_t *) v)
!= NGX_OK)
{
return NGX_ERROR;
}
if (v->len) {
v->valid = 1;
v->no_cachable = 0;
v->not_found = 0;
return NGX_OK;
}
}
v->not_found = 1;
return NGX_OK;
}
static ngx_int_t
ngx_http_ssl_client_i_dn(ngx_http_request_t *r, ngx_http_variable_value_t *v,
uintptr_t data)
{
if (r->connection->ssl) {
if (ngx_ssl_get_issuer_dn(r->connection, r->pool, (ngx_str_t *) v)
!= NGX_OK)
{
return NGX_ERROR;
}
if (v->len) {
v->valid = 1;
v->no_cachable = 0;
v->not_found = 0;
return NGX_OK;
}
}
v->not_found = 1;
return NGX_OK;
}
static ngx_int_t
ngx_http_ssl_add_variables(ngx_conf_t *cf)
{
@ -217,12 +299,16 @@ ngx_http_ssl_create_srv_conf(ngx_conf_t *cf)
* scf->certificate.data = NULL;
* scf->certificate_key.len = 0;
* scf->certificate_key.data = NULL;
* scf->client_certificate.len = 0;
* scf->client_certificate.data = NULL;
* scf->ciphers.len = 0;
* scf->ciphers.data = NULL;
*/
scf->enable = NGX_CONF_UNSET;
scf->session_timeout = NGX_CONF_UNSET;
scf->verify = NGX_CONF_UNSET;
scf->verify_depth = NGX_CONF_UNSET;
scf->prefer_server_ciphers = NGX_CONF_UNSET;
return scf;
@ -253,12 +339,18 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
(NGX_CONF_BITMASK_SET
|NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1));
ngx_conf_merge_value(conf->verify, prev->verify, 0);
ngx_conf_merge_value(conf->verify_depth, prev->verify_depth, 1);
ngx_conf_merge_str_value(conf->certificate, prev->certificate,
NGX_DEFLAUT_CERTIFICATE);
ngx_conf_merge_str_value(conf->certificate_key, prev->certificate_key,
NGX_DEFLAUT_CERTIFICATE_KEY);
ngx_conf_merge_str_value(conf->client_certificate, prev->client_certificate,
"");
ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFLAUT_CIPHERS);
@ -291,6 +383,21 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
&conf->ciphers);
}
if (conf->verify) {
SSL_CTX_set_verify(conf->ssl.ctx, NGX_SSL_VERIFY, NULL);
SSL_CTX_set_verify_depth(conf->ssl.ctx, conf->verify_depth);
if (conf->client_certificate.len) {
if (ngx_ssl_client_certificate(cf, &conf->ssl,
&conf->client_certificate)
!= NGX_OK)
{
return NGX_CONF_ERROR;
}
}
}
#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
if (conf->prefer_server_ciphers) {

4
src/http/modules/ngx_http_ssl_module.h
View File

@ -22,10 +22,14 @@ typedef struct {
ngx_uint_t protocols;
ngx_int_t verify;
ngx_int_t verify_depth;
time_t session_timeout;
ngx_str_t certificate;
ngx_str_t certificate_key;
ngx_str_t client_certificate;
ngx_str_t ciphers;
} ngx_http_ssl_srv_conf_t;

36
src/http/ngx_http_request.c
View File

@ -1172,8 +1172,12 @@ ngx_http_process_cookie(ngx_http_request_t *r, ngx_table_elt_t *h,
static ngx_int_t
ngx_http_process_request_header(ngx_http_request_t *r)
{
size_t len;
u_char *ua, *user_agent, ch;
size_t len;
u_char *ua, *user_agent, ch;
#if (NGX_HTTP_SSL)
long rc;
ngx_http_ssl_srv_conf_t *sscf;
#endif
if (r->headers_in.host) {
for (len = 0; len < r->headers_in.host->value.len; len++) {
@ -1243,6 +1247,34 @@ ngx_http_process_request_header(ngx_http_request_t *r)
return NGX_ERROR;
}
#if (NGX_HTTP_SSL)
if (r->connection->ssl) {
sscf = ngx_http_get_module_srv_conf(r, ngx_http_ssl_module);
if (sscf->verify) {
rc = SSL_get_verify_result(r->connection->ssl->connection);
if (rc != X509_V_OK) {
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"client SSL certificate verify error: %l ", rc);
ngx_http_finalize_request(r, NGX_HTTPS_CERT_ERROR);
return NGX_ERROR;
}
if (SSL_get_peer_certificate(r->connection->ssl->connection)
== NULL)
{
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"client sent no required SSL certificate");
ngx_http_finalize_request(r, NGX_HTTPS_NO_CERT);
return NGX_ERROR;
}
}
}
#endif
if (r->headers_in.connection) {
if (r->headers_in.connection->value.len == 5
&& ngx_strcasecmp(r->headers_in.connection->value.data, "close")

5
src/http/ngx_http_request.h
View File

@ -75,7 +75,10 @@
/* The special code to close connection without any response */
#define NGX_HTTP_CLOSE 444
#define NGX_HTTP_OWN_CODES NGX_HTTP_TO_HTTPS
#define NGX_HTTP_OWN_CODES 495
#define NGX_HTTPS_CERT_ERROR 495
#define NGX_HTTPS_NO_CERT 496
/*
* We use the special code for the plain HTTP requests that are sent to

28
src/http/ngx_http_special_response.c
View File

@ -163,6 +163,26 @@ static char error_416_page[] =
;
static char error_495_page[] =
"<html>" CRLF
"<head><title>400 The SSL certificate error</title></head>"
CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>400 Bad Request</h1></center>" CRLF
"<center>The SSL certificate error</center>" CRLF
;
static char error_496_page[] =
"<html>" CRLF
"<head><title>400 No required SSL certificate was sent</title></head>"
CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>400 Bad Request</h1></center>" CRLF
"<center>No required SSL certificate was sent</center>" CRLF
;
static char error_497_page[] =
"<html>" CRLF
"<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>"
@ -254,6 +274,8 @@ static ngx_str_t error_pages[] = {
#define NGX_HTTP_LEVEL_400 17
ngx_string(error_495_page), /* 495, https certificate error */
ngx_string(error_496_page), /* 496, https no certificate */
ngx_string(error_497_page), /* 497, http to https */
ngx_string(error_404_page), /* 498, invalid host name */
ngx_null_string, /* 499, client had closed connection */
@ -296,6 +318,8 @@ ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error)
case NGX_HTTP_REQUEST_ENTITY_TOO_LARGE:
case NGX_HTTP_REQUEST_URI_TOO_LARGE:
case NGX_HTTP_TO_HTTPS:
case NGX_HTTPS_CERT_ERROR:
case NGX_HTTPS_NO_CERT:
case NGX_HTTP_INTERNAL_SERVER_ERROR:
r->keepalive = 0;
}
@ -305,6 +329,8 @@ ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error)
switch (error) {
case NGX_HTTP_BAD_REQUEST:
case NGX_HTTP_TO_HTTPS:
case NGX_HTTPS_CERT_ERROR:
case NGX_HTTPS_NO_CERT:
r->lingering_close = 0;
}
}
@ -372,6 +398,8 @@ ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error)
+ NGX_HTTP_LEVEL_400;
switch (error) {
case NGX_HTTP_TO_HTTPS:
case NGX_HTTPS_CERT_ERROR:
case NGX_HTTPS_NO_CERT:
r->headers_out.status = NGX_HTTP_BAD_REQUEST;
error = NGX_HTTP_BAD_REQUEST;
break;

13
src/http/ngx_http_variables.c
View File

@ -810,19 +810,12 @@ static ngx_int_t
ngx_http_variable_request_method(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data)
{
if (r->method_name.data) {
if (r->upstream && r->upstream->method.len) {
v->len = r->upstream->method.len;
v->data = r->upstream->method.data;
} else {
v->len = r->method_name.len;
v->data = r->method_name.data;
}
if (r->main->method_name.data) {
v->len = r->main->method_name.len;
v->valid = 1;
v->no_cachable = 0;
v->not_found = 0;
v->data = r->main->method_name.data;
} else {
v->not_found = 1;