static ngx_int_t
ngx_http_index_test_dir(ngx_http_request_t *r, ngx_http_core_loc_conf_t *clcf,
u_char *path, u_char *last)
{
u_char c;
ngx_str_t dir;
ngx_open_file_info_t of;
c = *last;
if (c != '/' || path == last) {
/* "alias" without trailing slash */
c = *(++last);
}
*last = '\0';
dir.len = last - path;
dir.data = path;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http index check dir: \"%V\"", &dir);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.test_dir = 1;
of.test_only = 1;
of.valid = clcf->open_file_cache_valid;
of.errors = clcf->open_file_cache_errors;
if (ngx_http_set_disable_symlinks(r, clcf, &dir, &of) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_open_cached_file(clcf->open_file_cache, &dir, &of, r->pool)
!= NGX_OK)
{
if (of.err) {
#if (NGX_HAVE_OPENAT)
if (of.err == NGX_EMLINK
|| of.err == NGX_ELOOP)
{
return NGX_HTTP_FORBIDDEN;
}
#endif
if (of.err == NGX_ENOENT) {
*last = c;
return ngx_http_index_error(r, clcf, dir.data, NGX_ENOENT);
}
if (of.err == NGX_EACCES) {
*last = c;
/*
* ngx_http_index_test_dir() is called after the first index
* file testing has returned an error distinct from NGX_EACCES.
* This means that directory searching is allowed.
*/
return NGX_OK;
}
ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
"%s \"%s\" failed", of.failed, dir.data);
}
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
*last = c;
if (of.is_dir) {
return NGX_OK;
}
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"\"%s\" is not a directory", dir.data);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
/* 配置index index.html index_large.html gmime-gmime-cipher-context.html;
2025/02/14 08:24:04[ ngx_http_process_request_headers, 1412] [debug] 2955#2955: *2 http header done
2025/02/14 08:24:04[ ngx_event_del_timer, 39] [debug] 2955#2955: *2 < ngx_http_process_request, 2013> event timer del: 3: 30909486
2025/02/14 08:24:04[ ngx_http_core_rewrite_phase, 1810] [debug] 2955#2955: *2 rewrite phase: 0 (NGX_HTTP_SERVER_REWRITE_PHASE)
2025/02/14 08:24:04[ ngx_http_core_find_config_phase, 1868] [debug] 2955#2955: *2 find config phase: 1 (NGX_HTTP_FIND_CONFIG_PHASE), uri:/
2025/02/14 08:24:04[ ngx_http_core_find_static_location, 2753] [debug] 2955#2955: *2 static_locations test location: "/", client uri:/
2025/02/14 08:24:04[ ngx_http_core_find_location, 2693] [debug] 2955#2955: *2 ngx pcre test location: ~ "/1mytest"
2025/02/14 08:24:04[ ngx_http_core_find_config_phase, 1888] [debug] 2955#2955: *2 using configuration "/"
2025/02/14 08:24:04[ ngx_http_core_find_config_phase, 1895] [debug] 2955#2955: *2 http cl:-1 max:1048576
2025/02/14 08:24:04[ ngx_http_core_rewrite_phase, 1810] [debug] 2955#2955: *2 rewrite phase: 2 (NGX_HTTP_REWRITE_PHASE)
2025/02/14 08:24:04[ ngx_http_core_post_rewrite_phase, 1963] [debug] 2955#2955: *2 post rewrite phase: 3 (NGX_HTTP_POST_REWRITE_PHASE)
2025/02/14 08:24:04[ ngx_http_core_generic_phase, 1746] [debug] 2955#2955: *2 generic phase: 4 (NGX_HTTP_PREACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_generic_phase, 1746] [debug] 2955#2955: *2 generic phase: 5 (NGX_HTTP_PREACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_access_phase, 2061] [debug] 2955#2955: *2 access phase: 6 (NGX_HTTP_ACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_access_phase, 2061] [debug] 2955#2955: *2 access phase: 7 (NGX_HTTP_ACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_post_access_phase, 2163] [debug] 2955#2955: *2 post access phase: 8 (NGX_HTTP_POST_ACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_content_phase, 2491] [debug] 2955#2955: *2 content phase: 9 (NGX_HTTP_CONTENT_PHASE)
2025/02/14 08:24:04[ ngx_http_index_handler, 144] [debug] 2955#2955: *2 yang test ... index-count:3
2025/02/14 08:24:04[ ngx_http_index_handler, 216] [debug] 2955#2955: *2 open index "/usr/local/nginx/html/index.html"
2025/02/14 08:24:04[ ngx_http_internal_redirect, 3853] [debug] 2955#2955: *2 internal redirect: "/index.html?"
2025/02/14 08:24:04[ ngx_http_core_rewrite_phase, 1810] [debug] 2955#2955: *2 rewrite phase: 0 (NGX_HTTP_SERVER_REWRITE_PHASE)
2025/02/14 08:24:04[ ngx_http_core_find_config_phase, 1868] [debug] 2955#2955: *2 find config phase: 1 (NGX_HTTP_FIND_CONFIG_PHASE), uri:/index.html
2025/02/14 08:24:04[ ngx_http_core_find_static_location, 2753] [debug] 2955#2955: *2 static_locations test location: "/", client uri:/index.html
2025/02/14 08:24:04[ ngx_http_core_find_static_location, 2753] [debug] 2955#2955: *2 static_locations test location: "proxy1", client uri:/index.html
2025/02/14 08:24:04[ ngx_http_core_find_static_location, 2753] [debug] 2955#2955: *2 static_locations test location: "mytest", client uri:/index.html
2025/02/14 08:24:04[ ngx_http_core_find_location, 2693] [debug] 2955#2955: *2 ngx pcre test location: ~ "/1mytest"
2025/02/14 08:24:04[ ngx_http_core_find_config_phase, 1888] [debug] 2955#2955: *2 using configuration "/"
2025/02/14 08:24:04[ ngx_http_core_find_config_phase, 1895] [debug] 2955#2955: *2 http cl:-1 max:1048576
2025/02/14 08:24:04[ ngx_http_core_rewrite_phase, 1810] [debug] 2955#2955: *2 rewrite phase: 2 (NGX_HTTP_REWRITE_PHASE)
2025/02/14 08:24:04[ ngx_http_core_post_rewrite_phase, 1963] [debug] 2955#2955: *2 post rewrite phase: 3 (NGX_HTTP_POST_REWRITE_PHASE)
2025/02/14 08:24:04[ ngx_http_core_generic_phase, 1746] [debug] 2955#2955: *2 generic phase: 4 (NGX_HTTP_PREACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_generic_phase, 1746] [debug] 2955#2955: *2 generic phase: 5 (NGX_HTTP_PREACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_access_phase, 2061] [debug] 2955#2955: *2 access phase: 6 (NGX_HTTP_ACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_access_phase, 2061] [debug] 2955#2955: *2 access phase: 7 (NGX_HTTP_ACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_post_access_phase, 2163] [debug] 2955#2955: *2 post access phase: 8 (NGX_HTTP_POST_ACCESS_PHASE)
2025/02/14 08:24:04[ ngx_http_core_content_phase, 2491] [debug] 2955#2955: *2 content phase: 9 (NGX_HTTP_CONTENT_PHASE)
2025/02/14 08:24:04[ ngx_http_core_content_phase, 2491] [debug] 2955#2955: *2 content phase: 10 (NGX_HTTP_CONTENT_PHASE)
2025/02/14 08:24:04[ ngx_http_core_content_phase, 2491] [debug] 2955#2955: *2 content phase: 11 (NGX_HTTP_CONTENT_PHASE)
2025/02/14 08:24:04[ ngx_http_static_handler, 85] [debug] 2955#2955: *2 http filename: "/usr/local/nginx/html/index.html"
2025/02/14 08:24:04[ ngx_http_static_handler, 145] [debug] 2955#2955: *2 http static fd: 11
2025/02/14 08:24:04[ ngx_http_discard_request_body, 734] [debug] 2955#2955: *2 http set discard body
*/
static ngx_int_t //主要功能是检查uri中的文件是否存在，不存在直接关闭连接，存在则做内部重定向，重定向后由于是文件路径，因此末尾没有/，走到该函数直接退出，然后在static-module中获取文件内容
ngx_http_index_handler(ngx_http_request_t *r)
{//注意:ngx_http_static_handler如果uri不是以/结尾返回，ngx_http_index_handler不以/结尾返回
//循环遍历index index.html index_large.html gmime-gmime-cipher-context.html;配置的文件，存在则返回，找到一个不在遍历后面的文件
//ngx_http_static_handler ngx_http_index_handler每次都要获取缓存信息stat信息，因此每次获取很可能是上一次stat执行的时候获取的信息，除非缓存过期
u_char *p, *name;
size_t len, root, reserve, allocated;
ngx_int_t rc;
ngx_str_t path, uri;
ngx_uint_t i, dir_tested;
ngx_http_index_t *index;
ngx_open_file_info_t of;
ngx_http_script_code_pt code;
ngx_http_script_engine_t e;
ngx_http_core_loc_conf_t *clcf;
ngx_http_index_loc_conf_t *ilcf;
ngx_http_script_len_code_pt lcode;
/*
一般匹配到location / {
}的时候，才会执行下面的index，然后进行内部跳转
*/
/*
如果浏览器输入:http://10.135.10.167/ABC/,则也会满足要求，uri会变为/ABC/index.html,打印如下
2015/10/16 12:08:03[ ngx_event_del_timer, 39] [debug] 12610#12610: *2 < ngx_http_process_request, 2013> event timer del: 3: 1859492499
2015/10/16 12:08:03[ ngx_http_core_rewrite_phase, 1810] [debug] 12610#12610: *2 rewrite phase: 0 (NGX_HTTP_SERVER_REWRITE_PHASE)
2015/10/16 12:08:03[ ngx_http_core_find_config_phase, 1868] [debug] 12610#12610: *2 find config phase: 1 (NGX_HTTP_FIND_CONFIG_PHASE), uri:/ABC/
2015/10/16 12:08:03[ ngx_http_core_find_static_location, 2753] [debug] 12610#12610: *2 static_locations test location: "/", client uri:/ABC/
2015/10/16 12:08:03[ ngx_http_core_find_static_location, 2753] [debug] 12610#12610: *2 static_locations test location: "proxy1", client uri:/ABC/
2015/10/16 12:08:03[ ngx_http_core_find_static_location, 2753] [debug] 12610#12610: *2 static_locations test location: "mytest", client uri:/ABC/
2015/10/16 12:08:03[ ngx_http_core_find_location, 2693] [debug] 12610#12610: *2 ngx pcre test location: ~ "\.php$"
2015/10/16 12:08:03[ ngx_http_core_find_location, 2693] [debug] 12610#12610: *2 ngx pcre test location: ~ "/1mytest"
2015/10/16 12:08:03[ ngx_http_core_find_config_phase, 1888] [debug] 12610#12610: *2 using configuration "/"
2015/10/16 12:08:03[ ngx_http_core_find_config_phase, 1895] [debug] 12610#12610: *2 http cl:-1 max:1048576
2015/10/16 12:08:03[ ngx_http_core_rewrite_phase, 1810] [debug] 12610#12610: *2 rewrite phase: 2 (NGX_HTTP_REWRITE_PHASE)
2015/10/16 12:08:03[ ngx_http_core_post_rewrite_phase, 1963] [debug] 12610#12610: *2 post rewrite phase: 3 (NGX_HTTP_POST_REWRITE_PHASE)
2015/10/16 12:08:03[ ngx_http_core_generic_phase, 1746] [debug] 12610#12610: *2 generic phase: 4 (NGX_HTTP_PREACCESS_PHASE)
2015/10/16 12:08:03[ ngx_http_core_generic_phase, 1746] [debug] 12610#12610: *2 generic phase: 5 (NGX_HTTP_PREACCESS_PHASE)
2015/10/16 12:08:03[ ngx_http_core_access_phase, 2061] [debug] 12610#12610: *2 access phase: 6 (NGX_HTTP_ACCESS_PHASE)
2015/10/16 12:08:03[ ngx_http_core_access_phase, 2061] [debug] 12610#12610: *2 access phase: 7 (NGX_HTTP_ACCESS_PHASE)
2015/10/16 12:08:03[ ngx_http_core_post_access_phase, 2163] [debug] 12610#12610: *2 post access phase: 8 (NGX_HTTP_POST_ACCESS_PHASE)
2015/10/16 12:08:03[ ngx_http_core_content_phase, 2491] [debug] 12610#12610: *2 content phase: 9 (NGX_HTTP_CONTENT_PHASE)
2015/10/16 12:08:03[ ngx_http_index_handler, 191] [debug] 12610#12610: *2 yang test ... index-count:3
2015/10/16 12:08:03[ ngx_http_index_handler, 263] [debug] 12610#12610: *2 open index "/var/yyz/www/ABC/index.html"
2015/10/16 12:08:03[ ngx_http_index_handler, 283] [debug] 12610#12610: *2 stat() "/var/yyz/www/ABC/index.html" failed (2: No such file or directory)
2015/10/16 12:08:03[ ngx_http_index_test_dir, 364] [debug] 12610#12610: *2 http index check dir: "/var/yyz/www/ABC"
*/ //默认http://10.2.13.167的时候，浏览器都会转换为http://10.2.13.167/发送到nginx服务器
if (r->uri.data[r->uri.len - 1] != '/') { //末尾不是/，直接跳转到下一阶段
return NGX_DECLINED;
}
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
return NGX_DECLINED;
}
ilcf = ngx_http_get_module_loc_conf(r, ngx_http_index_module);
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
allocated = 0;
root = 0;
dir_tested = 0;
name = NULL;
/* suppress MSVC warning */
path.data = NULL;
index = ilcf->indices->elts;
//indices上默认有一个NGX_HTTP_DEFAULT_INDEX
for (i = 0; i < ilcf->indices->nelts; i++) {//循环遍历index配置的文件，如果有该文件，则进行内部重定向，从新走NGX_HTTP_SERVER_REWRITE_PHASE
if (index[i].lengths == NULL) {
if (index[i].name.data[0] == '/') {
return ngx_http_internal_redirect(r, &index[i].name, &r->args);
}
reserve = ilcf->max_index_len;
len = index[i].name.len;
} else {
ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
e.ip = index[i].lengths->elts;
e.request = r;
e.flushed = 1;
/* 1 is for terminating '\0' as in static names */
len = 1;
while (*(uintptr_t *) e.ip) {
lcode = *(ngx_http_script_len_code_pt *) e.ip;
len += lcode(&e);
}
/* 16 bytes are preallocation */
reserve = len + 16;
}
if (reserve > allocated) {
name = ngx_http_map_uri_to_path(r, &path, &root, reserve);
if (name == NULL) {
return NGX_ERROR;
}
allocated = path.data + path.len - name;
}
if (index[i].values == NULL) {
/* index[i].name.len includes the terminating '\0' */
ngx_memcpy(name, index[i].name.data, index[i].name.len);
path.len = (name + index[i].name.len - 1) - path.data;
} else {
e.ip = index[i].values->elts;
e.pos = name;
while (*(uintptr_t *) e.ip) {
code = *(ngx_http_script_code_pt *) e.ip;
code((ngx_http_script_engine_t *) &e);
}
if (*name == '/') {
uri.len = len - 1;
uri.data = name;
return ngx_http_internal_redirect(r, &uri, &r->args);
}
path.len = e.pos - path.data;
*e.pos = '\0';
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"open index \"%V\"", &path);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = clcf->read_ahead;
of.directio = clcf->directio;
of.valid = clcf->open_file_cache_valid;
of.min_uses = clcf->open_file_cache_min_uses;
of.test_only = 1;
of.errors = clcf->open_file_cache_errors;
of.events = clcf->open_file_cache_events;
if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
!= NGX_OK)
{
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, of.err,
"%s \"%s\" failed", of.failed, path.data);
if (of.err == 0) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
#if (NGX_HAVE_OPENAT)
if (of.err == NGX_EMLINK
|| of.err == NGX_ELOOP)
{
return NGX_HTTP_FORBIDDEN;
}
#endif
if (of.err == NGX_ENOTDIR
|| of.err == NGX_ENAMETOOLONG
|| of.err == NGX_EACCES)
{
return ngx_http_index_error(r, clcf, path.data, of.err);
}
if (!dir_tested) {
rc = ngx_http_index_test_dir(r, clcf, path.data, name - 1);
if (rc != NGX_OK) {
return rc;
}
dir_tested = 1;
}
if (of.err == NGX_ENOENT) {
continue; //stat获取的参数file_name指定的文件不存在
}
ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
"%s \"%s\" failed", of.failed, path.data);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
uri.len = r->uri.len + len - 1;
if (!clcf->alias) {
uri.data = path.data + root;
} else {
uri.data = ngx_pnalloc(r->pool, uri.len);
if (uri.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
p = ngx_copy(uri.data, r->uri.data, r->uri.len);
ngx_memcpy(p, name, len - 1);
}
return ngx_http_internal_redirect(r, &uri, &r->args); //内部重定向
}
return NGX_DECLINED;
}
/******************************************************************
index指令的理解，当访问某个目录时未指定文件，如果此location
设置了index指令，将返回index指令设置的页面
******************************************************************/
static ngx_int_t
ngx_http_index_handler(ngx_http_request_t *r)
{
u_char *p, *name;
size_t len, root, reserve, allocated;
ngx_int_t rc;
ngx_str_t path, uri;
ngx_uint_t i, dir_tested;
ngx_http_index_t *index;
ngx_open_file_info_t of;
ngx_http_script_code_pt code;
ngx_http_script_engine_t e;
ngx_http_core_loc_conf_t *clcf;
ngx_http_index_loc_conf_t *ilcf;
ngx_http_script_len_code_pt lcode;
if (r->uri.data[r->uri.len - 1] != '/') { // uri不是“/”结尾时，说明uri中最后指定了文件，index和autoindex模块将不处理，交由static模块处理
return NGX_DECLINED;
}
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
return NGX_DECLINED;
}
// 这里获取的r->loc_conf可能是server层的也有可能是location层的，需要检查是否有匹配到配置文件中的Location
ilcf = ngx_http_get_module_loc_conf(r, ngx_http_index_module);
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
allocated = 0;
root = 0;
dir_tested = 0;
name = NULL;
/* suppress MSVC warning */
path.data = NULL;
index = ilcf->indices->elts;
for (i = 0; i < ilcf->indices->nelts; i++) { // 遍历index指令指定的每个参数
if (index[i].lengths == NULL) { // index指令参数中没有使用变量时
if (index[i].name.data[0] == '/') { // index指定的参数以"/"开始的， 将产生内部重定向。
return ngx_http_internal_redirect(r, &index[i].name, &r->args);
}
reserve = ilcf->max_index_len;
len = index[i].name.len;
} else { // index指令参数使用了变量
// 计算index指令参数指定的变量+常量字符串的长度
ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
e.ip = index[i].lengths->elts;
e.request = r;
e.flushed = 1;
/* 1 is for terminating '\0' as in static names */
len = 1;
while (*(uintptr_t *) e.ip) {
lcode = *(ngx_http_script_len_code_pt *) e.ip;
len += lcode(&e);
}
/* 16 bytes are preallocation */
reserve = len + 16;
}
if (reserve > allocated) {
name = ngx_http_map_uri_to_path(r, &path, &root, reserve);
if (name == NULL) {
return NGX_ERROR;
}
allocated = path.data + path.len - name; // ???
}
if (index[i].values == NULL) {
/* index[i].name.len includes the terminating '\0' */
ngx_memcpy(name, index[i].name.data, index[i].name.len); // 拷贝index指令指定的参数（e.g. "/usr/local/nginx/html/index1/index.html"）
path.len = (name + index[i].name.len - 1) - path.data;
} else {
e.ip = index[i].values->elts;
e.pos = name;
while (*(uintptr_t *) e.ip) {
code = *(ngx_http_script_code_pt *) e.ip;
code((ngx_http_script_engine_t *) &e);
}
if (*name == '/') {
uri.len = len - 1;
uri.data = name;
return ngx_http_internal_redirect(r, &uri, &r->args);
}
path.len = e.pos - path.data;
*e.pos = '\0';
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"open index \"%V\"", &path);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = clcf->read_ahead;
of.directio = clcf->directio;
of.valid = clcf->open_file_cache_valid;
of.min_uses = clcf->open_file_cache_min_uses;
of.test_only = 1;
of.errors = clcf->open_file_cache_errors;
of.events = clcf->open_file_cache_events;
if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
!= NGX_OK)
{
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, of.err,
"%s \"%s\" failed", of.failed, path.data);
if (of.err == 0) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
#if (NGX_HAVE_OPENAT)
if (of.err == NGX_EMLINK
|| of.err == NGX_ELOOP)
{
return NGX_HTTP_FORBIDDEN;
}
#endif
if (of.err == NGX_ENOTDIR
|| of.err == NGX_ENAMETOOLONG
|| of.err == NGX_EACCES)
{
return ngx_http_index_error(r, clcf, path.data, of.err);
}
if (!dir_tested) {
rc = ngx_http_index_test_dir(r, clcf, path.data, name - 1);
if (rc != NGX_OK) {
return rc;
}
dir_tested = 1;
}
if (of.err == NGX_ENOENT) {
continue;
}
ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
"%s \"%s\" failed", of.failed, path.data);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
uri.len = r->uri.len + len - 1;
if (!clcf->alias) {
uri.data = path.data + root;
} else {
uri.data = ngx_pnalloc(r->pool, uri.len);
if (uri.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
p = ngx_copy(uri.data, r->uri.data, r->uri.len);
ngx_memcpy(p, name, len - 1);
}
return ngx_http_internal_redirect(r, &uri, &r->args);
}// End for
return NGX_DECLINED;
}
static ngx_int_t
ngx_http_index_handler(ngx_http_request_t *r)
{
u_char *p, *name;
size_t len, root, reserve, allocated;
ngx_int_t rc;
ngx_str_t path, uri;
ngx_uint_t i, dir_tested;
ngx_http_index_t *index;
ngx_open_file_info_t of;
ngx_http_script_code_pt code;
ngx_http_script_engine_t e;
ngx_http_core_loc_conf_t *clcf;
ngx_http_index_loc_conf_t *ilcf;
ngx_http_script_len_code_pt lcode;
if (r->uri.data[r->uri.len - 1] != '/') {
return NGX_DECLINED;
}
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
return NGX_DECLINED;
}
ilcf = ngx_http_get_module_loc_conf(r, ngx_http_index_module);
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
allocated = 0;
root = 0;
dir_tested = 0;
name = NULL;
/* suppress MSVC warning */
path.data = NULL;
index = ilcf->indices->elts;
for (i = 0; i < ilcf->indices->nelts; i++) {
if (index[i].lengths == NULL) {
if (index[i].name.data[0] == '/') {
return ngx_http_internal_redirect(r, &index[i].name, &r->args);
}
reserve = ilcf->max_index_len;
len = index[i].name.len;
} else {
ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
e.ip = index[i].lengths->elts;
e.request = r;
e.flushed = 1;
/* 1 is for terminating '\0' as in static names */
len = 1;
while (*(uintptr_t *) e.ip) {
lcode = *(ngx_http_script_len_code_pt *) e.ip;
len += lcode(&e);
}
/* 16 bytes are preallocation */
reserve = len + 16;
}
if (reserve > allocated) {
name = ngx_http_map_uri_to_path(r, &path, &root, reserve);
if (name == NULL) {
return NGX_ERROR;
}
allocated = path.data + path.len - name;
}
if (index[i].values == NULL) {
/* index[i].name.len includes the terminating '\0' */
ngx_memcpy(name, index[i].name.data, index[i].name.len);
path.len = (name + index[i].name.len - 1) - path.data;
} else {
e.ip = index[i].values->elts;
e.pos = name;
while (*(uintptr_t *) e.ip) {
code = *(ngx_http_script_code_pt *) e.ip;
code((ngx_http_script_engine_t *) &e);
}
if (*name == '/') {
uri.len = len - 1;
uri.data = name;
return ngx_http_internal_redirect(r, &uri, &r->args);
}
path.len = e.pos - path.data;
*e.pos = '\0';
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"open index \"%V\"", &path);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = clcf->read_ahead;
of.directio = clcf->directio;
of.valid = clcf->open_file_cache_valid;
of.min_uses = clcf->open_file_cache_min_uses;
of.test_only = 1;
of.errors = clcf->open_file_cache_errors;
of.events = clcf->open_file_cache_events;
if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
!= NGX_OK)
{
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, of.err,
"%s \"%s\" failed", of.failed, path.data);
if (of.err == 0) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (of.err == NGX_ENOTDIR
|| of.err == NGX_ENAMETOOLONG
|| of.err == NGX_EACCES)
{
return ngx_http_index_error(r, clcf, path.data, of.err);
}
if (!dir_tested) {
rc = ngx_http_index_test_dir(r, clcf, path.data, name - 1);
if (rc != NGX_OK) {
return rc;
}
dir_tested = 1;
}
if (of.err == NGX_ENOENT) {
continue;
}
ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
"%s \"%s\" failed", of.failed, path.data);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
uri.len = r->uri.len + len - 1;
if (!clcf->alias) {
uri.data = path.data + root;
} else {
uri.data = ngx_pnalloc(r->pool, uri.len);
if (uri.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
p = ngx_copy(uri.data, r->uri.data, r->uri.len);
ngx_memcpy(p, name, len - 1);
}
return ngx_http_internal_redirect(r, &uri, &r->args);
}
return NGX_DECLINED;
}