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src/http/modules/ngx_http_index_module.c - nginx-1.7.10
Global variables defined
Data types defined
Functions defined
Macros defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_http.h>
- typedef struct {
- ngx_str_t name;
- ngx_array_t *lengths;
- ngx_array_t *values;
- } ngx_http_index_t;
- typedef struct {
- ngx_array_t *indices;
- size_t max_index_len;
- } ngx_http_index_loc_conf_t;
- #define NGX_HTTP_DEFAULT_INDEX "index.html"
- 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);
- static ngx_int_t ngx_http_index_error(ngx_http_request_t *r,
- ngx_http_core_loc_conf_t *clcf, u_char *file, ngx_err_t err);
- static ngx_int_t ngx_http_index_init(ngx_conf_t *cf);
- static void *ngx_http_index_create_loc_conf(ngx_conf_t *cf);
- static char *ngx_http_index_merge_loc_conf(ngx_conf_t *cf,
- void *parent, void *child);
- static char *ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd,
- void *conf);
- static ngx_command_t ngx_http_index_commands[] = {
- { ngx_string("index"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
- ngx_http_index_set_index,
- NGX_HTTP_LOC_CONF_OFFSET,
- 0,
- NULL },
- ngx_null_command
- };
- static ngx_http_module_t ngx_http_index_module_ctx = {
- NULL,
- ngx_http_index_init,
- NULL,
- NULL,
- NULL,
- NULL,
- ngx_http_index_create_loc_conf,
- ngx_http_index_merge_loc_conf
- };
- ngx_module_t ngx_http_index_module = {
- NGX_MODULE_V1,
- &ngx_http_index_module_ctx,
- ngx_http_index_commands,
- NGX_HTTP_MODULE,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NGX_MODULE_V1_PADDING
- };
- 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;
-
- 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;
-
- len = 1;
- while (*(uintptr_t *) e.ip) {
- lcode = *(ngx_http_script_len_code_pt *) e.ip;
- len += lcode(&e);
- }
-
- 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) {
-
- 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;
- }
- 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;
- }
- 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) {
-
- 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;
-
- 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;
- }
- static ngx_int_t
- ngx_http_index_error(ngx_http_request_t *r, ngx_http_core_loc_conf_t *clcf,
- u_char *file, ngx_err_t err)
- {
- if (err == NGX_EACCES) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, err,
- "\"%s\" is forbidden", file);
- return NGX_HTTP_FORBIDDEN;
- }
- if (clcf->log_not_found) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, err,
- "\"%s\" is not found", file);
- }
- return NGX_HTTP_NOT_FOUND;
- }
- static void *
- ngx_http_index_create_loc_conf(ngx_conf_t *cf)
- {
- ngx_http_index_loc_conf_t *conf;
- conf = ngx_palloc(cf->pool, sizeof(ngx_http_index_loc_conf_t));
- if (conf == NULL) {
- return NULL;
- }
- conf->indices = NULL;
- conf->max_index_len = 0;
- return conf;
- }
- static char *
- ngx_http_index_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
- {
- ngx_http_index_loc_conf_t *prev = parent;
- ngx_http_index_loc_conf_t *conf = child;
- ngx_http_index_t *index;
- if (conf->indices == NULL) {
- conf->indices = prev->indices;
- conf->max_index_len = prev->max_index_len;
- }
- if (conf->indices == NULL) {
- conf->indices = ngx_array_create(cf->pool, 1, sizeof(ngx_http_index_t));
- if (conf->indices == NULL) {
- return NGX_CONF_ERROR;
- }
- index = ngx_array_push(conf->indices);
- if (index == NULL) {
- return NGX_CONF_ERROR;
- }
- index->name.len = sizeof(NGX_HTTP_DEFAULT_INDEX);
- index->name.data = (u_char *) NGX_HTTP_DEFAULT_INDEX;
- index->lengths = NULL;
- index->values = NULL;
- conf->max_index_len = sizeof(NGX_HTTP_DEFAULT_INDEX);
- return NGX_CONF_OK;
- }
- return NGX_CONF_OK;
- }
- static ngx_int_t
- ngx_http_index_init(ngx_conf_t *cf)
- {
- ngx_http_handler_pt *h;
- ngx_http_core_main_conf_t *cmcf;
- cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
- h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
- if (h == NULL) {
- return NGX_ERROR;
- }
- *h = ngx_http_index_handler;
- return NGX_OK;
- }
- TODO
- static char *
- ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- ngx_http_index_loc_conf_t *ilcf = conf;
- ngx_str_t *value;
- ngx_uint_t i, n;
- ngx_http_index_t *index;
- ngx_http_script_compile_t sc;
- if (ilcf->indices == NULL) {
- ilcf->indices = ngx_array_create(cf->pool, 2, sizeof(ngx_http_index_t));
- if (ilcf->indices == NULL) {
- return NGX_CONF_ERROR;
- }
- }
- value = cf->args->elts;
- for (i = 1; i < cf->args->nelts; i++) {
- if (value[i].data[0] == '/' && i != cf->args->nelts - 1) {
- ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
- "only the last index in \"index\" directive "
- "should be absolute");
- }
- if (value[i].len == 0) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "index \"%V\" in \"index\" directive is invalid",
- &value[1]);
- return NGX_CONF_ERROR;
- }
- index = ngx_array_push(ilcf->indices);
- if (index == NULL) {
- return NGX_CONF_ERROR;
- }
- index->name.len = value[i].len;
- index->name.data = value[i].data;
- index->lengths = NULL;
- index->values = NULL;
- n = ngx_http_script_variables_count(&value[i]);
- if (n == 0) {
- if (ilcf->max_index_len < index->name.len) {
- ilcf->max_index_len = index->name.len;
- }
- if (index->name.data[0] == '/') {
- continue;
- }
-
- index->name.len++;
- continue;
- }
- ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
- sc.cf = cf;
- sc.source = &value[i];
- sc.lengths = &index->lengths;
- sc.values = &index->values;
- sc.variables = n;
- sc.complete_lengths = 1;
- sc.complete_values = 1;
- if (ngx_http_script_compile(&sc) != NGX_OK) {
- return NGX_CONF_ERROR;
- }
- }
- return NGX_CONF_OK;
- }
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