Mercurial > hg > nginx-vendor-0-8
view src/http/modules/ngx_http_index_module.c @ 196:8759b346e431 NGINX_0_3_45
nginx 0.3.45
*) 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 É 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.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Sat, 06 May 2006 00:00:00 +0400 |
parents | 003bd800ec2a |
children | 14050d2bec9b |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev */ #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; /* array of ngx_http_index_t */ size_t max_index_len; } ngx_http_index_loc_conf_t; typedef struct { ngx_uint_t current; ngx_str_t path; ngx_str_t index; ngx_uint_t tested; /* unsigned tested:1 */ } ngx_http_index_ctx_t; #define NGX_HTTP_DEFAULT_INDEX "index.html" static ngx_int_t ngx_http_index_test_dir(ngx_http_request_t *r, ngx_http_index_ctx_t *ctx); static ngx_int_t ngx_http_index_error(ngx_http_request_t *r, ngx_http_index_ctx_t *ctx, ngx_err_t err); static ngx_int_t ngx_http_index_init(ngx_cycle_t *cycle); 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 }, #if (NGX_HTTP_CACHE) { ngx_string("index_cache"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE3, ngx_http_set_cache_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_index_loc_conf_t, index_cache), NULL }, #endif ngx_null_command }; ngx_http_module_t ngx_http_index_module_ctx = { NULL, /* preconfiguration */ NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_index_create_loc_conf, /* create location configration */ ngx_http_index_merge_loc_conf /* merge location configration */ }; ngx_module_t ngx_http_index_module = { NGX_MODULE_V1, &ngx_http_index_module_ctx, /* module context */ ngx_http_index_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ ngx_http_index_init, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; /* * Try to open the first index file before the test of the directory existence * because the valid requests should be many more than invalid ones. * If open() would fail, then stat() should be more quickly because some data * is already cached in the kernel. * Besides, Win32 has ERROR_PATH_NOT_FOUND (NGX_ENOTDIR). * Unix has ENOTDIR error, although it less helpfull - it points only * that path contains the usual file in place of the directory. */ static ngx_int_t ngx_http_index_handler(ngx_http_request_t *r) { u_char *last; size_t len; ngx_fd_t fd; ngx_int_t rc; ngx_err_t err; ngx_str_t uri; ngx_log_t *log; ngx_uint_t i; ngx_http_index_t *index; ngx_http_index_ctx_t *ctx; ngx_pool_cleanup_t *cln; ngx_pool_cleanup_file_t *clnf; 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; } /* TODO: Win32 */ if (r->zero_in_uri) { return NGX_DECLINED; } if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { return NGX_DECLINED; } log = r->connection->log; /* * we use context because the handler supports an async file opening, * and may be called several times */ ilcf = ngx_http_get_module_loc_conf(r, ngx_http_index_module); ctx = ngx_http_get_module_ctx(r, ngx_http_index_module); if (ctx == NULL) { ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_index_ctx_t)); if (ctx == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } ngx_http_set_ctx(r, ctx, ngx_http_index_module); } index = ilcf->indices->elts; for (i = ctx->current; 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); } len = ilcf->max_index_len; ctx->index.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 byte for terminating '\0' */ len = 1; while (*(uintptr_t *) e.ip) { lcode = *(ngx_http_script_len_code_pt *) e.ip; len += lcode(&e); } ctx->index.len = len; /* 16 bytes are preallocation */ len += 16; } if (len > ctx->path.len) { last = ngx_http_map_uri_to_path(r, &ctx->path, len); if (last == NULL) { return NGX_ERROR; } ctx->index.data = last; } if (index[i].values == NULL) { /* index[i].name.len includes the terminating '\0' */ ngx_memcpy(ctx->index.data, index[i].name.data, index[i].name.len); } else { e.ip = index[i].values->elts; e.pos = ctx->index.data; while (*(uintptr_t *) e.ip) { code = *(ngx_http_script_code_pt *) e.ip; code((ngx_http_script_engine_t *) &e); } if (*ctx->index.data == '/') { ctx->index.len--; return ngx_http_internal_redirect(r, &ctx->index, &r->args); } *e.pos++ = '\0'; } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "open index \"%s\"", ctx->path.data); cln = ngx_pool_cleanup_add(r->pool, sizeof(ngx_pool_cleanup_file_t)); if (cln == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } fd = ngx_open_file(ctx->path.data, NGX_FILE_RDONLY, NGX_FILE_OPEN); if (fd == (ngx_fd_t) NGX_AGAIN) { ctx->current = i; return NGX_AGAIN; } if (fd == NGX_INVALID_FILE) { err = ngx_errno; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, err, ngx_open_file_n " \"%s\" failed", ctx->path.data); if (err == NGX_ENOTDIR) { return ngx_http_index_error(r, ctx, err); } else if (err == NGX_EACCES) { return ngx_http_index_error(r, ctx, err); } if (!ctx->tested) { rc = ngx_http_index_test_dir(r, ctx); if (rc != NGX_OK) { return rc; } ctx->tested = 1; } if (err == NGX_ENOENT) { continue; } ngx_log_error(NGX_LOG_ERR, log, err, ngx_open_file_n " \"%s\" failed", ctx->path.data); return NGX_HTTP_INTERNAL_SERVER_ERROR; } cln->handler = ngx_pool_cleanup_file; clnf = cln->data; clnf->fd = fd; clnf->name = ctx->path.data; clnf->log = r->pool->log; clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); uri.len = r->uri.len + ctx->index.len - 1; if (!clcf->alias) { uri.data = ctx->path.data + r->root_length; } else { uri.data = ngx_palloc(r->pool, uri.len); if (uri.data == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } last = ngx_copy(uri.data, r->uri.data, r->uri.len); ngx_memcpy(last, ctx->index.data, ctx->index.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_index_ctx_t *ctx) { ngx_err_t err; ngx_file_info_t fi; *(ctx->index.data - 1) = '\0'; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http index check dir: \"%s\"", ctx->path.data); if (ngx_file_info(ctx->path.data, &fi) == -1) { err = ngx_errno; if (err == NGX_ENOENT) { *(ctx->index.data - 1) = '/'; return ngx_http_index_error(r, ctx, err); } ngx_log_error(NGX_LOG_CRIT, r->connection->log, err, ngx_file_info_n " \"%s\" failed", ctx->path.data); return NGX_HTTP_INTERNAL_SERVER_ERROR; } *(ctx->index.data - 1) = '/'; if (ngx_is_dir(&fi)) { return NGX_OK; } ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, "\"%s\" is not a directory", ctx->path.data); return NGX_HTTP_INTERNAL_SERVER_ERROR; } static ngx_int_t ngx_http_index_error(ngx_http_request_t *r, ngx_http_index_ctx_t *ctx, ngx_err_t err) { if (err == NGX_EACCES) { ngx_log_error(NGX_LOG_ERR, r->connection->log, err, "\"%s\" is forbidden", ctx->path.data); return NGX_HTTP_FORBIDDEN; } ngx_log_error(NGX_LOG_ERR, r->connection->log, err, "\"%s\" is not found", ctx->path.data); 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 NGX_CONF_ERROR; } conf->indices = NULL; conf->max_index_len = 1; 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; } /* TODO: warn about duplicate indices */ 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_uint_t i, n; ngx_str_t *value; 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_EMERG, cf, 0, "only the last index in \"index\" directive " "may be absolute"); return NGX_CONF_ERROR; } 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 != 0 && ilcf->max_index_len < index->name.len) { ilcf->max_index_len = index->name.len; } /* include the terminating '\0' to the length to use ngx_copy() */ 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; } ilcf->max_index_len = 0; } return NGX_CONF_OK; } static ngx_int_t ngx_http_index_init(ngx_cycle_t *cycle) { ngx_http_handler_pt *h; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_cycle_get_module_main_conf(cycle, 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; }