2405 lines
62 KiB
C
2405 lines
62 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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#define NGX_HTTP_SSI_ERROR 1
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#define NGX_HTTP_SSI_DATE_LEN 2048
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#define NGX_HTTP_SSI_ADD_PREFIX 1
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#define NGX_HTTP_SSI_ADD_ZERO 2
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#define NGX_HTTP_SSI_EXPR_TEST 4
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typedef struct {
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ngx_flag_t enable;
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ngx_flag_t silent_errors;
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ngx_flag_t ignore_recycled_buffers;
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ngx_array_t *types; /* array of ngx_str_t */
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size_t min_file_chunk;
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size_t value_len;
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} ngx_http_ssi_loc_conf_t;
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typedef struct {
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ngx_str_t name;
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ngx_uint_t key;
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ngx_str_t value;
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} ngx_http_ssi_var_t;
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typedef enum {
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ssi_start_state = 0,
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ssi_tag_state,
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ssi_comment0_state,
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ssi_comment1_state,
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ssi_sharp_state,
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ssi_precommand_state,
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ssi_command_state,
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ssi_preparam_state,
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ssi_param_state,
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ssi_preequal_state,
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ssi_prevalue_state,
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ssi_double_quoted_value_state,
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ssi_quoted_value_state,
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ssi_quoted_symbol_state,
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ssi_postparam_state,
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ssi_comment_end0_state,
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ssi_comment_end1_state,
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ssi_error_state,
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ssi_error_end0_state,
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ssi_error_end1_state
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} ngx_http_ssi_state_e;
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static ngx_int_t ngx_http_ssi_output(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx);
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static ngx_int_t ngx_http_ssi_parse(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx);
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static ngx_str_t *ngx_http_ssi_get_variable(ngx_http_request_t *r,
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ngx_str_t *name, ngx_uint_t key);
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static ngx_int_t ngx_http_ssi_evaluate_string(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx, ngx_str_t *text, ngx_uint_t flags);
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static ngx_int_t ngx_http_ssi_include(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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static ngx_int_t ngx_http_ssi_echo(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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static ngx_int_t ngx_http_ssi_config(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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static ngx_int_t ngx_http_ssi_set(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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static ngx_int_t ngx_http_ssi_if(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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static ngx_int_t ngx_http_ssi_else(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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static ngx_int_t ngx_http_ssi_endif(ngx_http_request_t *r,
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ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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static ngx_int_t ngx_http_ssi_date_gmt_local_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t gmt);
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static char *ngx_http_ssi_types(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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static ngx_int_t ngx_http_ssi_preconfiguration(ngx_conf_t *cf);
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static void *ngx_http_ssi_create_main_conf(ngx_conf_t *cf);
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static char *ngx_http_ssi_init_main_conf(ngx_conf_t *cf, void *conf);
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static void *ngx_http_ssi_create_conf(ngx_conf_t *cf);
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static char *ngx_http_ssi_merge_conf(ngx_conf_t *cf,
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void *parent, void *child);
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static ngx_int_t ngx_http_ssi_filter_init(ngx_cycle_t *cycle);
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static ngx_command_t ngx_http_ssi_filter_commands[] = {
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{ ngx_string("ssi"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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ngx_conf_set_flag_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_ssi_loc_conf_t, enable),
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NULL },
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{ ngx_string("ssi_silent_errors"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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ngx_conf_set_flag_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_ssi_loc_conf_t, silent_errors),
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NULL },
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{ ngx_string("ssi_ignore_recycled_buffers"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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ngx_conf_set_flag_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_ssi_loc_conf_t, ignore_recycled_buffers),
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NULL },
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{ ngx_string("ssi_min_file_chunk"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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ngx_conf_set_size_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_ssi_loc_conf_t, min_file_chunk),
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NULL },
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{ ngx_string("ssi_value_length"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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ngx_conf_set_size_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_ssi_loc_conf_t, value_len),
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NULL },
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{ ngx_string("ssi_types"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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ngx_http_ssi_types,
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NGX_HTTP_LOC_CONF_OFFSET,
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0,
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NULL },
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ngx_null_command
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};
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static ngx_http_module_t ngx_http_ssi_filter_module_ctx = {
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ngx_http_ssi_preconfiguration, /* preconfiguration */
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NULL, /* postconfiguration */
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ngx_http_ssi_create_main_conf, /* create main configuration */
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ngx_http_ssi_init_main_conf, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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ngx_http_ssi_create_conf, /* create location configuration */
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ngx_http_ssi_merge_conf /* merge location configuration */
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};
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ngx_module_t ngx_http_ssi_filter_module = {
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NGX_MODULE_V1,
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&ngx_http_ssi_filter_module_ctx, /* module context */
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ngx_http_ssi_filter_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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ngx_http_ssi_filter_init, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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static u_char ngx_http_ssi_string[] = "<!--";
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static ngx_str_t ngx_http_ssi_none = ngx_string("(none)");
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#define NGX_HTTP_SSI_INCLUDE_VIRTUAL 0
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#define NGX_HTTP_SSI_INCLUDE_FILE 1
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#define NGX_HTTP_SSI_INCLUDE_WAIT 2
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#define NGX_HTTP_SSI_ECHO_VAR 0
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#define NGX_HTTP_SSI_ECHO_DEFAULT 1
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#define NGX_HTTP_SSI_CONFIG_ERRMSG 0
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#define NGX_HTTP_SSI_CONFIG_TIMEFMT 1
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#define NGX_HTTP_SSI_SET_VAR 0
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#define NGX_HTTP_SSI_SET_VALUE 1
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#define NGX_HTTP_SSI_IF_EXPR 0
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static ngx_http_ssi_param_t ngx_http_ssi_include_params[] = {
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{ ngx_string("virtual"), NGX_HTTP_SSI_INCLUDE_VIRTUAL, 0, 0 },
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{ ngx_string("file"), NGX_HTTP_SSI_INCLUDE_FILE, 0, 0 },
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{ ngx_string("wait"), NGX_HTTP_SSI_INCLUDE_WAIT, 0, 0 },
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{ ngx_null_string, 0, 0, 0 }
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};
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static ngx_http_ssi_param_t ngx_http_ssi_echo_params[] = {
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{ ngx_string("var"), NGX_HTTP_SSI_ECHO_VAR, 1, 0 },
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{ ngx_string("default"), NGX_HTTP_SSI_ECHO_DEFAULT, 0, 0 },
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{ ngx_null_string, 0, 0, 0 }
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};
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static ngx_http_ssi_param_t ngx_http_ssi_config_params[] = {
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{ ngx_string("errmsg"), NGX_HTTP_SSI_CONFIG_ERRMSG, 0, 0 },
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{ ngx_string("timefmt"), NGX_HTTP_SSI_CONFIG_TIMEFMT, 0, 0 },
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{ ngx_null_string, 0, 0, 0 }
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};
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static ngx_http_ssi_param_t ngx_http_ssi_set_params[] = {
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{ ngx_string("var"), NGX_HTTP_SSI_SET_VAR, 1, 0 },
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{ ngx_string("value"), NGX_HTTP_SSI_SET_VALUE, 1, 0 },
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{ ngx_null_string, 0, 0, 0 }
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};
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static ngx_http_ssi_param_t ngx_http_ssi_if_params[] = {
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{ ngx_string("expr"), NGX_HTTP_SSI_IF_EXPR, 1, 0 },
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{ ngx_null_string, 0, 0, 0 }
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};
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static ngx_http_ssi_param_t ngx_http_ssi_no_params[] = {
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{ ngx_null_string, 0, 0, 0 }
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};
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static ngx_http_ssi_command_t ngx_http_ssi_commands[] = {
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{ ngx_string("include"), ngx_http_ssi_include,
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ngx_http_ssi_include_params, 0, 1 },
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{ ngx_string("echo"), ngx_http_ssi_echo, ngx_http_ssi_echo_params, 0, 0 },
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{ ngx_string("config"), ngx_http_ssi_config,
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ngx_http_ssi_config_params, 0, 0 },
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{ ngx_string("set"), ngx_http_ssi_set, ngx_http_ssi_set_params, 0, 0 },
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{ ngx_string("if"), ngx_http_ssi_if, ngx_http_ssi_if_params, 0, 0 },
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{ ngx_string("elif"), ngx_http_ssi_if, ngx_http_ssi_if_params,
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NGX_HTTP_SSI_COND_IF, 0 },
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{ ngx_string("else"), ngx_http_ssi_else, ngx_http_ssi_no_params,
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NGX_HTTP_SSI_COND_IF, 0 },
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{ ngx_string("endif"), ngx_http_ssi_endif, ngx_http_ssi_no_params,
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NGX_HTTP_SSI_COND_ELSE, 0 },
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{ ngx_null_string, NULL, NULL, 0, 0 }
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};
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static ngx_http_variable_t ngx_http_ssi_vars[] = {
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{ ngx_string("date_local"), NULL, ngx_http_ssi_date_gmt_local_variable, 0,
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NGX_HTTP_VAR_NOCACHABLE, 0 },
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{ ngx_string("date_gmt"), NULL, ngx_http_ssi_date_gmt_local_variable, 1,
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NGX_HTTP_VAR_NOCACHABLE, 0 },
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{ ngx_null_string, NULL, NULL, 0, 0, 0 }
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};
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static ngx_int_t
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ngx_http_ssi_header_filter(ngx_http_request_t *r)
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{
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ngx_uint_t i;
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ngx_str_t *type;
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ngx_http_ssi_ctx_t *ctx;
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ngx_http_ssi_loc_conf_t *slcf;
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slcf = ngx_http_get_module_loc_conf(r, ngx_http_ssi_filter_module);
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if (!slcf->enable
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|| r->headers_out.content_type.len == 0
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|| r->headers_out.content_length_n == 0)
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{
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return ngx_http_next_header_filter(r);
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}
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type = slcf->types->elts;
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for (i = 0; i < slcf->types->nelts; i++) {
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if (r->headers_out.content_type.len >= type[i].len
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&& ngx_strncasecmp(r->headers_out.content_type.data,
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type[i].data, type[i].len) == 0)
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{
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goto found;
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}
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}
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return ngx_http_next_header_filter(r);
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found:
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ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_ssi_ctx_t));
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if (ctx == NULL) {
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return NGX_ERROR;
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}
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ngx_http_set_ctx(r, ctx, ngx_http_ssi_filter_module);
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ctx->value_len = slcf->value_len;
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ctx->last_out = &ctx->out;
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ctx->output = 1;
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ctx->params.elts = ctx->params_array;
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ctx->params.size = sizeof(ngx_table_elt_t);
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ctx->params.nalloc = NGX_HTTP_SSI_PARAMS_N;
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ctx->params.pool = r->pool;
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ctx->timefmt.len = sizeof("%A, %d-%b-%Y %H:%M:%S %Z") - 1;
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ctx->timefmt.data = (u_char *) "%A, %d-%b-%Y %H:%M:%S %Z";
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ctx->errmsg.len =
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sizeof("[an error occurred while processing the directive]") - 1;
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ctx->errmsg.data = (u_char *)
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"[an error occurred while processing the directive]";
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r->filter_need_in_memory = 1;
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if (r == r->main) {
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ngx_http_clear_content_length(r);
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ngx_http_clear_last_modified(r);
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}
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return ngx_http_next_header_filter(r);
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}
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static ngx_int_t
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ngx_http_ssi_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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{
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ngx_int_t rc;
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ngx_buf_t *b;
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ngx_uint_t i, index;
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ngx_chain_t *cl;
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ngx_table_elt_t *param;
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ngx_connection_t *c;
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ngx_http_ssi_ctx_t *ctx;
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ngx_http_ssi_param_t *prm;
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ngx_http_ssi_command_t *cmd;
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ngx_http_ssi_loc_conf_t *slcf;
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ngx_http_ssi_main_conf_t *smcf;
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ngx_str_t *params[NGX_HTTP_SSI_MAX_PARAMS + 1];
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ctx = ngx_http_get_module_ctx(r, ngx_http_ssi_filter_module);
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if (ctx == NULL
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|| (in == NULL
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&& ctx->buf == NULL
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&& ctx->in == NULL
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&& ctx->busy == NULL))
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{
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return ngx_http_next_body_filter(r, in);
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}
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/* add the incoming chain to the chain ctx->in */
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if (in) {
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if (ngx_chain_add_copy(r->pool, &ctx->in, in) == NGX_ERROR) {
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return NGX_ERROR;
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}
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}
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if (ctx->wait) {
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if (r->connection->data != r) {
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"http ssi filter \"%V\" wait", &r->uri);
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return NGX_AGAIN;
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}
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"http ssi filter \"%V\" continue", &r->uri);
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ctx->wait = 0;
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}
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slcf = ngx_http_get_module_loc_conf(r, ngx_http_ssi_filter_module);
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"http ssi filter \"%V\"", &r->uri);
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while (ctx->in || ctx->buf) {
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if (ctx->buf == NULL ){
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ctx->buf = ctx->in->buf;
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ctx->in = ctx->in->next;
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ctx->pos = ctx->buf->pos;
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}
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if (ctx->state == ssi_start_state) {
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ctx->copy_start = ctx->pos;
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ctx->copy_end = ctx->pos;
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}
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b = NULL;
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while (ctx->pos < ctx->buf->last) {
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ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"saved: %d state: %d", ctx->saved, ctx->state);
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rc = ngx_http_ssi_parse(r, ctx);
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ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"parse: %d, looked: %d %p-%p",
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rc, ctx->looked, ctx->copy_start, ctx->copy_end);
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if (rc == NGX_ERROR) {
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return rc;
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}
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if (ctx->copy_start != ctx->copy_end) {
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if (ctx->output) {
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"saved: %d", ctx->saved);
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if (ctx->saved) {
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if (ctx->free) {
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cl = ctx->free;
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ctx->free = ctx->free->next;
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b = cl->buf;
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ngx_memzero(b, sizeof(ngx_buf_t));
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} else {
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b = ngx_calloc_buf(r->pool);
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if (b == NULL) {
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return NGX_ERROR;
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}
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cl = ngx_alloc_chain_link(r->pool);
|
|
if (cl == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
cl->buf = b;
|
|
}
|
|
|
|
b->memory = 1;
|
|
b->pos = ngx_http_ssi_string;
|
|
b->last = ngx_http_ssi_string + ctx->saved;
|
|
|
|
*ctx->last_out = cl;
|
|
ctx->last_out = &cl->next;
|
|
|
|
ctx->saved = 0;
|
|
}
|
|
|
|
if (ctx->free) {
|
|
cl = ctx->free;
|
|
ctx->free = ctx->free->next;
|
|
b = cl->buf;
|
|
|
|
} else {
|
|
b = ngx_alloc_buf(r->pool);
|
|
if (b == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
cl = ngx_alloc_chain_link(r->pool);
|
|
if (cl == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
cl->buf = b;
|
|
}
|
|
|
|
ngx_memcpy(b, ctx->buf, sizeof(ngx_buf_t));
|
|
|
|
b->pos = ctx->copy_start;
|
|
b->last = ctx->copy_end;
|
|
b->shadow = NULL;
|
|
b->last_buf = 0;
|
|
b->recycled = 0;
|
|
|
|
if (b->in_file) {
|
|
if (slcf->min_file_chunk < (size_t) (b->last - b->pos))
|
|
{
|
|
b->file_last = b->file_pos + (b->last - b->start);
|
|
b->file_pos += b->pos - b->start;
|
|
|
|
} else {
|
|
b->in_file = 0;
|
|
}
|
|
}
|
|
|
|
cl->next = NULL;
|
|
*ctx->last_out = cl;
|
|
ctx->last_out = &cl->next;
|
|
|
|
} else {
|
|
ctx->saved = 0;
|
|
}
|
|
}
|
|
|
|
if (ctx->state == ssi_start_state) {
|
|
ctx->copy_start = ctx->pos;
|
|
ctx->copy_end = ctx->pos;
|
|
|
|
} else {
|
|
ctx->copy_start = NULL;
|
|
ctx->copy_end = NULL;
|
|
}
|
|
|
|
if (rc == NGX_AGAIN) {
|
|
continue;
|
|
}
|
|
|
|
|
|
b = NULL;
|
|
|
|
if (rc == NGX_OK) {
|
|
|
|
smcf = ngx_http_get_module_main_conf(r,
|
|
ngx_http_ssi_filter_module);
|
|
|
|
cmd = ngx_hash_find(&smcf->hash, ctx->key, ctx->command.data,
|
|
ctx->command.len);
|
|
|
|
if (cmd == NULL) {
|
|
if (ctx->output) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"invalid SSI command: \"%V\"",
|
|
&ctx->command);
|
|
goto ssi_error;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
if (cmd->conditional
|
|
&& (ctx->conditional == 0
|
|
|| ctx->conditional > cmd->conditional))
|
|
{
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"invalid context of SSI command: \"%V\"",
|
|
&ctx->command);
|
|
goto ssi_error;
|
|
}
|
|
|
|
if (!ctx->output && cmd->conditional == 0) {
|
|
continue;
|
|
}
|
|
|
|
if (ctx->params.nelts > NGX_HTTP_SSI_MAX_PARAMS) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"too many SSI command paramters: \"%V\"",
|
|
&ctx->command);
|
|
goto ssi_error;
|
|
}
|
|
|
|
ngx_memzero(params,
|
|
(NGX_HTTP_SSI_MAX_PARAMS + 1) * sizeof(ngx_str_t *));
|
|
|
|
param = ctx->params.elts;
|
|
|
|
for (i = 0; i < ctx->params.nelts; i++) {
|
|
|
|
for (prm = cmd->params; prm->name.len; prm++) {
|
|
|
|
if (param[i].key.len != prm->name.len
|
|
|| ngx_strncmp(param[i].key.data, prm->name.data,
|
|
prm->name.len) != 0)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (!prm->multiple) {
|
|
if (params[prm->index]) {
|
|
ngx_log_error(NGX_LOG_ERR,
|
|
r->connection->log, 0,
|
|
"duplicate \"%V\" parameter "
|
|
"in \"%V\" SSI command",
|
|
¶m[i].key, &ctx->command);
|
|
|
|
goto ssi_error;
|
|
}
|
|
|
|
params[prm->index] = ¶m[i].value;
|
|
|
|
break;
|
|
}
|
|
|
|
for (index = prm->index; params[index]; index++) {
|
|
/* void */
|
|
}
|
|
|
|
params[index] = ¶m[i].value;
|
|
|
|
break;
|
|
}
|
|
|
|
if (prm->name.len == 0) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"invalid parameter name: \"%V\" "
|
|
"in \"%V\" SSI command",
|
|
¶m[i].key, &ctx->command);
|
|
|
|
goto ssi_error;
|
|
}
|
|
}
|
|
|
|
for (prm = cmd->params; prm->name.len; prm++) {
|
|
if (prm->mandatory && params[prm->index] == 0) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"mandatory \"%V\" parameter is absent "
|
|
"in \"%V\" SSI command",
|
|
&prm->name, &ctx->command);
|
|
|
|
goto ssi_error;
|
|
}
|
|
}
|
|
|
|
if (cmd->flush && ctx->out) {
|
|
rc = ngx_http_ssi_output(r, ctx);
|
|
|
|
if (rc == NGX_ERROR) {
|
|
return NGX_ERROR;
|
|
}
|
|
}
|
|
|
|
c = r->connection;
|
|
|
|
rc = cmd->handler(r, ctx, params);
|
|
|
|
if (c->destroyed) {
|
|
return NGX_DONE;
|
|
}
|
|
|
|
if (rc == NGX_OK) {
|
|
continue;
|
|
}
|
|
|
|
if (rc == NGX_AGAIN) {
|
|
return NGX_AGAIN;
|
|
}
|
|
|
|
if (rc == NGX_ERROR) {
|
|
return NGX_ERROR;
|
|
}
|
|
}
|
|
|
|
|
|
/* rc == NGX_HTTP_SSI_ERROR */
|
|
|
|
ssi_error:
|
|
|
|
if (slcf->silent_errors) {
|
|
continue;
|
|
}
|
|
|
|
if (ctx->free) {
|
|
cl = ctx->free;
|
|
ctx->free = ctx->free->next;
|
|
b = cl->buf;
|
|
ngx_memzero(b, sizeof(ngx_buf_t));
|
|
|
|
} else {
|
|
b = ngx_calloc_buf(r->pool);
|
|
if (b == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
cl = ngx_alloc_chain_link(r->pool);
|
|
if (cl == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
cl->buf = b;
|
|
}
|
|
|
|
b->memory = 1;
|
|
b->pos = ctx->errmsg.data;
|
|
b->last = ctx->errmsg.data + ctx->errmsg.len;
|
|
|
|
cl->next = NULL;
|
|
*ctx->last_out = cl;
|
|
ctx->last_out = &cl->next;
|
|
|
|
continue;
|
|
}
|
|
|
|
if (ctx->buf->last_buf || ctx->buf->recycled) {
|
|
if (b == NULL) {
|
|
if (ctx->free) {
|
|
cl = ctx->free;
|
|
ctx->free = ctx->free->next;
|
|
b = cl->buf;
|
|
ngx_memzero(b, sizeof(ngx_buf_t));
|
|
|
|
} else {
|
|
b = ngx_calloc_buf(r->pool);
|
|
if (b == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
cl = ngx_alloc_chain_link(r->pool);
|
|
if (cl == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
cl->buf = b;
|
|
}
|
|
|
|
b->sync = 1;
|
|
|
|
cl->next = NULL;
|
|
*ctx->last_out = cl;
|
|
ctx->last_out = &cl->next;
|
|
}
|
|
|
|
b->last_buf = ctx->buf->last_buf;
|
|
b->shadow = ctx->buf;
|
|
|
|
if (slcf->ignore_recycled_buffers == 0) {
|
|
b->recycled = ctx->buf->recycled;
|
|
}
|
|
}
|
|
|
|
ctx->buf = NULL;
|
|
|
|
ctx->saved = ctx->looked;
|
|
}
|
|
|
|
if (ctx->out == NULL && ctx->busy == NULL) {
|
|
return NGX_OK;
|
|
}
|
|
|
|
return ngx_http_ssi_output(r, ctx);
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_output(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx)
|
|
{
|
|
ngx_int_t rc;
|
|
ngx_buf_t *b;
|
|
ngx_chain_t *cl;
|
|
|
|
#if 1
|
|
b = NULL;
|
|
for (cl = ctx->out; cl; cl = cl->next) {
|
|
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"ssi out: %p %p", cl->buf, cl->buf->pos);
|
|
if (cl->buf == b) {
|
|
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
"the same buf was used in ssi");
|
|
ngx_debug_point();
|
|
return NGX_ERROR;
|
|
}
|
|
b = cl->buf;
|
|
}
|
|
#endif
|
|
|
|
rc = ngx_http_next_body_filter(r, ctx->out);
|
|
|
|
if (ctx->busy == NULL) {
|
|
ctx->busy = ctx->out;
|
|
|
|
} else {
|
|
for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ }
|
|
cl->next = ctx->out;
|
|
}
|
|
|
|
ctx->out = NULL;
|
|
ctx->last_out = &ctx->out;
|
|
|
|
while (ctx->busy) {
|
|
|
|
cl = ctx->busy;
|
|
b = cl->buf;
|
|
|
|
if (ngx_buf_size(b) != 0) {
|
|
break;
|
|
}
|
|
|
|
#if (NGX_HAVE_WRITE_ZEROCOPY)
|
|
if (b->zerocopy_busy) {
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
if (b->shadow) {
|
|
b->shadow->pos = b->shadow->last;
|
|
}
|
|
|
|
ctx->busy = cl->next;
|
|
|
|
if (ngx_buf_in_memory(b) || b->in_file) {
|
|
/* add data bufs only to the free buf chain */
|
|
|
|
cl->next = ctx->free;
|
|
ctx->free = cl;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_parse(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx)
|
|
{
|
|
u_char *p, *value, *last, *copy_end, ch;
|
|
size_t looked;
|
|
ngx_http_ssi_state_e state;
|
|
|
|
state = ctx->state;
|
|
looked = ctx->looked;
|
|
last = ctx->buf->last;
|
|
copy_end = ctx->copy_end;
|
|
|
|
for (p = ctx->pos; p < last; p++) {
|
|
|
|
ch = *p;
|
|
|
|
if (state == ssi_start_state) {
|
|
|
|
/* the tight loop */
|
|
|
|
for ( ;; ) {
|
|
if (ch == '<') {
|
|
copy_end = p;
|
|
looked = 1;
|
|
state = ssi_tag_state;
|
|
|
|
goto tag_started;
|
|
}
|
|
|
|
if (++p == last) {
|
|
break;
|
|
}
|
|
|
|
ch = *p;
|
|
}
|
|
|
|
ctx->pos = p;
|
|
ctx->looked = looked;
|
|
ctx->copy_end = p;
|
|
|
|
if (ctx->copy_start == NULL) {
|
|
ctx->copy_start = ctx->buf->pos;
|
|
}
|
|
|
|
return NGX_AGAIN;
|
|
|
|
tag_started:
|
|
|
|
continue;
|
|
}
|
|
|
|
switch (state) {
|
|
|
|
case ssi_start_state:
|
|
break;
|
|
|
|
case ssi_tag_state:
|
|
switch (ch) {
|
|
case '!':
|
|
looked = 2;
|
|
state = ssi_comment0_state;
|
|
break;
|
|
|
|
case '<':
|
|
copy_end = p;
|
|
break;
|
|
|
|
default:
|
|
copy_end = p;
|
|
looked = 0;
|
|
state = ssi_start_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_comment0_state:
|
|
switch (ch) {
|
|
case '-':
|
|
looked = 3;
|
|
state = ssi_comment1_state;
|
|
break;
|
|
|
|
case '<':
|
|
copy_end = p;
|
|
looked = 1;
|
|
state = ssi_tag_state;
|
|
break;
|
|
|
|
default:
|
|
copy_end = p;
|
|
looked = 0;
|
|
state = ssi_start_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_comment1_state:
|
|
switch (ch) {
|
|
case '-':
|
|
looked = 4;
|
|
state = ssi_sharp_state;
|
|
break;
|
|
|
|
case '<':
|
|
copy_end = p;
|
|
looked = 1;
|
|
state = ssi_tag_state;
|
|
break;
|
|
|
|
default:
|
|
copy_end = p;
|
|
looked = 0;
|
|
state = ssi_start_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_sharp_state:
|
|
switch (ch) {
|
|
case '#':
|
|
ctx->saved = 0;
|
|
looked = 0;
|
|
state = ssi_precommand_state;
|
|
break;
|
|
|
|
case '<':
|
|
copy_end = p;
|
|
looked = 1;
|
|
state = ssi_tag_state;
|
|
break;
|
|
|
|
default:
|
|
copy_end = p;
|
|
looked = 0;
|
|
state = ssi_start_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_precommand_state:
|
|
switch (ch) {
|
|
case ' ':
|
|
case CR:
|
|
case LF:
|
|
case '\t':
|
|
break;
|
|
|
|
default:
|
|
ctx->command.len = 1;
|
|
ctx->command.data = ngx_palloc(r->pool,
|
|
NGX_HTTP_SSI_COMMAND_LEN);
|
|
if (ctx->command.data == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
ctx->command.data[0] = ch;
|
|
|
|
ctx->key = 0;
|
|
ctx->key = ngx_hash(ctx->key, ch);
|
|
|
|
ctx->params.nelts = 0;
|
|
|
|
state = ssi_command_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_command_state:
|
|
switch (ch) {
|
|
case ' ':
|
|
case CR:
|
|
case LF:
|
|
case '\t':
|
|
state = ssi_preparam_state;
|
|
break;
|
|
|
|
case '-':
|
|
state = ssi_comment_end0_state;
|
|
break;
|
|
|
|
default:
|
|
if (ctx->command.len == NGX_HTTP_SSI_COMMAND_LEN) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"the \"%V%c...\" SSI command is too long",
|
|
&ctx->command, ch);
|
|
|
|
state = ssi_error_state;
|
|
break;
|
|
}
|
|
|
|
ctx->command.data[ctx->command.len++] = ch;
|
|
ctx->key = ngx_hash(ctx->key, ch);
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_preparam_state:
|
|
switch (ch) {
|
|
case ' ':
|
|
case CR:
|
|
case LF:
|
|
case '\t':
|
|
break;
|
|
|
|
case '-':
|
|
state = ssi_comment_end0_state;
|
|
break;
|
|
|
|
default:
|
|
ctx->param = ngx_array_push(&ctx->params);
|
|
if (ctx->param == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
ctx->param->key.len = 1;
|
|
ctx->param->key.data = ngx_palloc(r->pool,
|
|
NGX_HTTP_SSI_PARAM_LEN);
|
|
if (ctx->param->key.data == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
ctx->param->key.data[0] = ch;
|
|
|
|
ctx->param->value.len = 0;
|
|
|
|
if (ctx->value_buf == NULL) {
|
|
ctx->param->value.data = ngx_palloc(r->pool,
|
|
ctx->value_len);
|
|
if (ctx->param->value.data == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
} else {
|
|
ctx->param->value.data = ctx->value_buf;
|
|
}
|
|
|
|
state = ssi_param_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_param_state:
|
|
switch (ch) {
|
|
case ' ':
|
|
case CR:
|
|
case LF:
|
|
case '\t':
|
|
state = ssi_preequal_state;
|
|
break;
|
|
|
|
case '=':
|
|
state = ssi_prevalue_state;
|
|
break;
|
|
|
|
case '-':
|
|
state = ssi_error_end0_state;
|
|
|
|
ctx->param->key.data[ctx->param->key.len++] = ch;
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"invalid \"%V\" parameter in \"%V\" SSI command",
|
|
&ctx->param->key, &ctx->command);
|
|
break;
|
|
|
|
default:
|
|
if (ctx->param->key.len == NGX_HTTP_SSI_PARAM_LEN) {
|
|
state = ssi_error_state;
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"too long \"%V%c...\" parameter in "
|
|
"\"%V\" SSI command",
|
|
&ctx->param->key, ch, &ctx->command);
|
|
break;
|
|
}
|
|
|
|
ctx->param->key.data[ctx->param->key.len++] = ch;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_preequal_state:
|
|
switch (ch) {
|
|
case ' ':
|
|
case CR:
|
|
case LF:
|
|
case '\t':
|
|
break;
|
|
|
|
case '=':
|
|
state = ssi_prevalue_state;
|
|
break;
|
|
|
|
default:
|
|
if (ch == '-') {
|
|
state = ssi_error_end0_state;
|
|
} else {
|
|
state = ssi_error_state;
|
|
}
|
|
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"unexpected \"%c\" symbol after \"%V\" "
|
|
"parameter in \"%V\" SSI command",
|
|
ch, &ctx->param->key, &ctx->command);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_prevalue_state:
|
|
switch (ch) {
|
|
case ' ':
|
|
case CR:
|
|
case LF:
|
|
case '\t':
|
|
break;
|
|
|
|
case '"':
|
|
state = ssi_double_quoted_value_state;
|
|
break;
|
|
|
|
case '\'':
|
|
state = ssi_quoted_value_state;
|
|
break;
|
|
|
|
default:
|
|
if (ch == '-') {
|
|
state = ssi_error_end0_state;
|
|
} else {
|
|
state = ssi_error_state;
|
|
}
|
|
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"unexpected \"%c\" symbol before value of "
|
|
"\"%V\" parameter in \"%V\" SSI command",
|
|
ch, &ctx->param->key, &ctx->command);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_double_quoted_value_state:
|
|
switch (ch) {
|
|
case '"':
|
|
state = ssi_postparam_state;
|
|
break;
|
|
|
|
case '\\':
|
|
ctx->saved_state = ssi_double_quoted_value_state;
|
|
state = ssi_quoted_symbol_state;
|
|
|
|
/* fall through */
|
|
|
|
default:
|
|
if (ctx->param->value.len == ctx->value_len) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"too long \"%V%c...\" value of \"%V\" "
|
|
"parameter in \"%V\" SSI command",
|
|
&ctx->param->value, ch, &ctx->param->key,
|
|
&ctx->command);
|
|
state = ssi_error_state;
|
|
break;
|
|
}
|
|
|
|
ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_quoted_value_state:
|
|
switch (ch) {
|
|
case '\'':
|
|
state = ssi_postparam_state;
|
|
break;
|
|
|
|
case '\\':
|
|
ctx->saved_state = ssi_quoted_value_state;
|
|
state = ssi_quoted_symbol_state;
|
|
|
|
/* fall through */
|
|
|
|
default:
|
|
if (ctx->param->value.len == ctx->value_len) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"too long \"%V%c...\" value of \"%V\" "
|
|
"parameter in \"%V\" SSI command",
|
|
&ctx->param->value, ch, &ctx->param->key,
|
|
&ctx->command);
|
|
state = ssi_error_state;
|
|
break;
|
|
}
|
|
|
|
ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_quoted_symbol_state:
|
|
state = ctx->saved_state;
|
|
|
|
ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
|
|
break;
|
|
|
|
case ssi_postparam_state:
|
|
|
|
if (ctx->param->value.len + 1 < ctx->value_len / 2) {
|
|
value = ngx_palloc(r->pool, ctx->param->value.len + 1);
|
|
if (value == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
ngx_memcpy(value, ctx->param->value.data,
|
|
ctx->param->value.len);
|
|
|
|
ctx->value_buf = ctx->param->value.data;
|
|
ctx->param->value.data = value;
|
|
|
|
} else {
|
|
ctx->value_buf = NULL;
|
|
}
|
|
|
|
switch (ch) {
|
|
case ' ':
|
|
case CR:
|
|
case LF:
|
|
case '\t':
|
|
state = ssi_preparam_state;
|
|
break;
|
|
|
|
case '-':
|
|
state = ssi_comment_end0_state;
|
|
break;
|
|
|
|
default:
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"unexpected \"%c\" symbol after \"%V\" value "
|
|
"of \"%V\" parameter in \"%V\" SSI command",
|
|
ch, &ctx->param->value, &ctx->param->key,
|
|
&ctx->command);
|
|
state = ssi_error_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_comment_end0_state:
|
|
switch (ch) {
|
|
case '-':
|
|
state = ssi_comment_end1_state;
|
|
break;
|
|
|
|
default:
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"unexpected \"%c\" symbol in \"%V\" SSI command",
|
|
ch, &ctx->command);
|
|
state = ssi_error_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_comment_end1_state:
|
|
switch (ch) {
|
|
case '>':
|
|
ctx->state = ssi_start_state;
|
|
ctx->pos = p + 1;
|
|
ctx->looked = looked;
|
|
ctx->copy_end = copy_end;
|
|
|
|
if (ctx->copy_start == NULL && copy_end) {
|
|
ctx->copy_start = ctx->buf->pos;
|
|
}
|
|
|
|
return NGX_OK;
|
|
|
|
default:
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"unexpected \"%c\" symbol in \"%V\" SSI command",
|
|
ch, &ctx->command);
|
|
state = ssi_error_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_error_state:
|
|
switch (ch) {
|
|
case '-':
|
|
state = ssi_error_end0_state;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_error_end0_state:
|
|
switch (ch) {
|
|
case '-':
|
|
state = ssi_error_end1_state;
|
|
break;
|
|
|
|
default:
|
|
state = ssi_error_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ssi_error_end1_state:
|
|
switch (ch) {
|
|
case '>':
|
|
ctx->state = ssi_start_state;
|
|
ctx->pos = p + 1;
|
|
ctx->looked = looked;
|
|
ctx->copy_end = copy_end;
|
|
|
|
if (ctx->copy_start == NULL && copy_end) {
|
|
ctx->copy_start = ctx->buf->pos;
|
|
}
|
|
|
|
return NGX_HTTP_SSI_ERROR;
|
|
|
|
default:
|
|
state = ssi_error_state;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
ctx->state = state;
|
|
ctx->pos = p;
|
|
ctx->looked = looked;
|
|
|
|
ctx->copy_end = (state == ssi_start_state) ? p : copy_end;
|
|
|
|
if (ctx->copy_start == NULL && ctx->copy_end) {
|
|
ctx->copy_start = ctx->buf->pos;
|
|
}
|
|
|
|
return NGX_AGAIN;
|
|
}
|
|
|
|
|
|
static ngx_str_t *
|
|
ngx_http_ssi_get_variable(ngx_http_request_t *r, ngx_str_t *name,
|
|
ngx_uint_t key)
|
|
{
|
|
ngx_uint_t i;
|
|
ngx_http_ssi_var_t *var;
|
|
ngx_http_ssi_ctx_t *ctx;
|
|
|
|
ctx = ngx_http_get_module_ctx(r->main, ngx_http_ssi_filter_module);
|
|
|
|
var = ctx->variables.elts;
|
|
for (i = 0; i < ctx->variables.nelts; i++) {
|
|
if (name->len != var[i].name.len) {
|
|
continue;
|
|
}
|
|
|
|
if (key != var[i].key) {
|
|
continue;
|
|
}
|
|
|
|
if (ngx_strncmp(name->data, var[i].name.data, name->len) == 0) {
|
|
return &var[i].value;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_evaluate_string(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
ngx_str_t *text, ngx_uint_t flags)
|
|
{
|
|
u_char ch, *p, **value, *data, *part_data;
|
|
size_t *size, len, prefix, part_len;
|
|
ngx_str_t var, *val;
|
|
ngx_int_t key;
|
|
ngx_uint_t i, j, n, bracket, quoted;
|
|
ngx_array_t lengths, values;
|
|
ngx_http_variable_value_t *vv;
|
|
|
|
n = ngx_http_script_variables_count(text);
|
|
|
|
if (n == 0) {
|
|
|
|
data = text->data;
|
|
p = data;
|
|
|
|
if ((flags & NGX_HTTP_SSI_ADD_PREFIX) && text->data[0] != '/') {
|
|
|
|
for (prefix = r->uri.len; prefix; prefix--) {
|
|
if (r->uri.data[prefix - 1] == '/') {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (prefix) {
|
|
len = prefix + text->len;
|
|
|
|
data = ngx_palloc(r->pool, len);
|
|
if (data == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
p = ngx_copy(data, r->uri.data, prefix);
|
|
}
|
|
}
|
|
|
|
quoted = 0;
|
|
|
|
for (i = 0 ; i < text->len; i++) {
|
|
ch = text->data[i];
|
|
|
|
if (!quoted) {
|
|
|
|
if (ch == '\\') {
|
|
quoted = 1;
|
|
continue;
|
|
}
|
|
|
|
} else {
|
|
quoted = 0;
|
|
|
|
if (ch != '\\' && ch != '\'' && ch != '"' && ch != '$') {
|
|
*p++ = '\\';
|
|
}
|
|
}
|
|
|
|
*p++ = ch;
|
|
}
|
|
|
|
text->len = p - data;
|
|
text->data = data;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
if (ngx_array_init(&lengths, r->pool, 8, sizeof(size_t *)) != NGX_OK) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
if (ngx_array_init(&values, r->pool, 8, sizeof(u_char *)) != NGX_OK) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
len = 0;
|
|
i = 0;
|
|
|
|
while (i < text->len) {
|
|
|
|
if (text->data[i] == '$') {
|
|
|
|
var.len = 0;
|
|
|
|
if (++i == text->len) {
|
|
goto invalid_variable;
|
|
}
|
|
|
|
if (text->data[i] == '{') {
|
|
bracket = 1;
|
|
|
|
if (++i == text->len) {
|
|
goto invalid_variable;
|
|
}
|
|
|
|
var.data = &text->data[i];
|
|
|
|
} else {
|
|
bracket = 0;
|
|
var.data = &text->data[i];
|
|
}
|
|
|
|
for ( /* void */ ; i < text->len; i++, var.len++) {
|
|
ch = text->data[i];
|
|
|
|
if (ch == '}' && bracket) {
|
|
i++;
|
|
bracket = 0;
|
|
break;
|
|
}
|
|
|
|
if ((ch >= 'A' && ch <= 'Z')
|
|
|| (ch >= 'a' && ch <= 'z')
|
|
|| (ch >= '0' && ch <= '9')
|
|
|| ch == '_')
|
|
{
|
|
continue;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (bracket) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"the closing bracket in \"%V\" "
|
|
"variable is missing", &var);
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
if (var.len == 0) {
|
|
goto invalid_variable;
|
|
}
|
|
|
|
key = 0;
|
|
|
|
for (j = 0; j < var.len; j++) {
|
|
var.data[j] = ngx_tolower(var.data[j]);
|
|
key = ngx_hash(key, var.data[j]);
|
|
}
|
|
|
|
val = ngx_http_ssi_get_variable(r, &var, key);
|
|
|
|
if (val == NULL) {
|
|
vv = ngx_http_get_variable(r, &var, key,
|
|
flags & NGX_HTTP_SSI_EXPR_TEST);
|
|
if (vv == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
if (vv->not_found) {
|
|
continue;
|
|
}
|
|
|
|
part_data = vv->data;
|
|
part_len = vv->len;
|
|
|
|
} else {
|
|
part_data = val->data;
|
|
part_len = val->len;
|
|
}
|
|
|
|
} else {
|
|
part_data = &text->data[i];
|
|
quoted = 0;
|
|
|
|
for (p = part_data; i < text->len; i++) {
|
|
ch = text->data[i];
|
|
|
|
if (!quoted) {
|
|
|
|
if (ch == '\\') {
|
|
quoted = 1;
|
|
continue;
|
|
}
|
|
|
|
if (ch == '$') {
|
|
break;
|
|
}
|
|
|
|
} else {
|
|
quoted = 0;
|
|
|
|
if (ch != '\\' && ch != '\'' && ch != '"' && ch != '$') {
|
|
*p++ = '\\';
|
|
}
|
|
}
|
|
|
|
*p++ = ch;
|
|
}
|
|
|
|
part_len = p - part_data;
|
|
}
|
|
|
|
len += part_len;
|
|
|
|
size = ngx_array_push(&lengths);
|
|
if (size == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
*size = part_len;
|
|
|
|
value = ngx_array_push(&values);
|
|
if (value == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
*value = part_data;
|
|
}
|
|
|
|
prefix = 0;
|
|
|
|
size = lengths.elts;
|
|
value = values.elts;
|
|
|
|
if (flags & NGX_HTTP_SSI_ADD_PREFIX) {
|
|
for (i = 0; i < values.nelts; i++) {
|
|
if (size[i] != 0) {
|
|
if (*value[i] != '/') {
|
|
for (prefix = r->uri.len; prefix; prefix--) {
|
|
if (r->uri.data[prefix - 1] == '/') {
|
|
len += prefix;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
p = ngx_palloc(r->pool, len + ((flags & NGX_HTTP_SSI_ADD_ZERO) ? 1 : 0));
|
|
if (p == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
text->len = len;
|
|
text->data = p;
|
|
|
|
p = ngx_copy(p, r->uri.data, prefix);
|
|
|
|
for (i = 0; i < values.nelts; i++) {
|
|
p = ngx_copy(p, value[i], size[i]);
|
|
}
|
|
|
|
return NGX_OK;
|
|
|
|
invalid_variable:
|
|
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"invalid variable name in \"%V\"", text);
|
|
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_include(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
ngx_str_t **params)
|
|
{
|
|
ngx_int_t rc;
|
|
ngx_str_t *uri, *file, *wait, args;
|
|
ngx_uint_t flags;
|
|
|
|
uri = params[NGX_HTTP_SSI_INCLUDE_VIRTUAL];
|
|
file = params[NGX_HTTP_SSI_INCLUDE_FILE];
|
|
wait = params[NGX_HTTP_SSI_INCLUDE_WAIT];
|
|
|
|
if (uri && file) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"inlcusion may be either virtual=\"%V\" or file=\"%V\"",
|
|
uri, file);
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
if (uri == NULL && file == NULL) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"no parameter in \"include\" SSI command");
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
if (wait) {
|
|
if (uri == NULL) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"\"wait\" may not be used with file=\"%V\"",
|
|
uri, file);
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
if (wait->len == 2 && ngx_strncasecmp(wait->data, "no", 2) == 0) {
|
|
wait = NULL;
|
|
|
|
} else if (wait->len != 3 || ngx_strncasecmp(wait->data, "yes", 3) != 0)
|
|
{
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"invalid value \"%V\" in the \"wait\" parameter",
|
|
&wait);
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
}
|
|
|
|
if (uri == NULL) {
|
|
uri = file;
|
|
}
|
|
|
|
if (ngx_http_ssi_evaluate_string(r, ctx, uri, NGX_HTTP_SSI_ADD_PREFIX)
|
|
!= NGX_OK)
|
|
{
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
args.len = 0;
|
|
args.data = NULL;
|
|
flags = 0;
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"ssi include: \"%V\"", uri);
|
|
|
|
if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
rc = ngx_http_subrequest(r, uri, &args, flags);
|
|
|
|
if (rc == NGX_ERROR) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
if (wait == NULL) {
|
|
return NGX_OK;
|
|
}
|
|
|
|
if (rc == NGX_AGAIN) {
|
|
ctx->wait = 1;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_echo(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
ngx_str_t **params)
|
|
{
|
|
ngx_int_t key;
|
|
ngx_uint_t i;
|
|
ngx_buf_t *b;
|
|
ngx_str_t *var, *value, text;
|
|
ngx_chain_t *cl;
|
|
ngx_http_variable_value_t *vv;
|
|
|
|
var = params[NGX_HTTP_SSI_ECHO_VAR];
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"ssi echo \"%V\"", var);
|
|
|
|
key = 0;
|
|
|
|
for (i = 0; i < var->len; i++) {
|
|
var->data[i] = ngx_tolower(var->data[i]);
|
|
key = ngx_hash(key, var->data[i]);
|
|
}
|
|
|
|
value = ngx_http_ssi_get_variable(r, var, key);
|
|
|
|
if (value == NULL) {
|
|
vv = ngx_http_get_variable(r, var, key, 1);
|
|
|
|
if (vv == NULL) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
if (!vv->not_found) {
|
|
text.data = vv->data;
|
|
text.len = vv->len;
|
|
value = &text;
|
|
}
|
|
}
|
|
|
|
if (value == NULL) {
|
|
value = params[NGX_HTTP_SSI_ECHO_DEFAULT];
|
|
|
|
if (value == NULL) {
|
|
value = &ngx_http_ssi_none;
|
|
|
|
} else if (value->len == 0) {
|
|
return NGX_OK;
|
|
}
|
|
|
|
} else {
|
|
if (value->len == 0) {
|
|
return NGX_OK;
|
|
}
|
|
}
|
|
|
|
b = ngx_calloc_buf(r->pool);
|
|
if (b == NULL) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
cl = ngx_alloc_chain_link(r->pool);
|
|
if (cl == NULL) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
b->memory = 1;
|
|
b->pos = value->data;
|
|
b->last = value->data + value->len;
|
|
|
|
cl->buf = b;
|
|
cl->next = NULL;
|
|
*ctx->last_out = cl;
|
|
ctx->last_out = &cl->next;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_config(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
ngx_str_t **params)
|
|
{
|
|
ngx_str_t *value;
|
|
|
|
value = params[NGX_HTTP_SSI_CONFIG_TIMEFMT];
|
|
|
|
if (value) {
|
|
ctx->timefmt.len = value->len;
|
|
ctx->timefmt.data = ngx_palloc(r->pool, value->len + 1);
|
|
if (ctx->timefmt.data == NULL) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
ngx_cpystrn(ctx->timefmt.data, value->data, value->len + 1);
|
|
}
|
|
|
|
value = params[NGX_HTTP_SSI_CONFIG_ERRMSG];
|
|
|
|
if (value) {
|
|
ctx->errmsg = *value;
|
|
}
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_set(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
ngx_str_t **params)
|
|
{
|
|
ngx_int_t key;
|
|
ngx_uint_t i;
|
|
ngx_str_t *name, *value, *vv;
|
|
ngx_http_ssi_var_t *var;
|
|
ngx_http_ssi_ctx_t *mctx;
|
|
|
|
mctx = ngx_http_get_module_ctx(r->main, ngx_http_ssi_filter_module);
|
|
|
|
if (mctx->variables.elts == NULL) {
|
|
if (ngx_array_init(&mctx->variables, r->pool, 4,
|
|
sizeof(ngx_http_ssi_var_t)) != NGX_OK)
|
|
{
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
}
|
|
|
|
name = params[NGX_HTTP_SSI_SET_VAR];
|
|
value = params[NGX_HTTP_SSI_SET_VALUE];
|
|
|
|
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"ssi set \"%V\" \"%V\"", name, value);
|
|
|
|
if (ngx_http_ssi_evaluate_string(r, ctx, value, 0) != NGX_OK) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
key = 0;
|
|
|
|
for (i = 0; i < name->len; i++) {
|
|
name->data[i] = ngx_tolower(name->data[i]);
|
|
key = ngx_hash(key, name->data[i]);
|
|
}
|
|
|
|
vv = ngx_http_ssi_get_variable(r, name, key);
|
|
|
|
if (vv) {
|
|
*vv = *value;
|
|
return NGX_OK;
|
|
}
|
|
|
|
var = ngx_array_push(&mctx->variables);
|
|
if (var == NULL) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
var->name = *name;
|
|
var->key = key;
|
|
var->value = *value;
|
|
|
|
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"set: \"%V\"=\"%V\"", name, value);
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_if(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
ngx_str_t **params)
|
|
{
|
|
u_char *p, *last;
|
|
ngx_str_t *expr, left, right;
|
|
ngx_int_t rc;
|
|
ngx_uint_t negative, noregex, flags;
|
|
#if (NGX_PCRE)
|
|
ngx_str_t err;
|
|
ngx_regex_t *regex;
|
|
u_char errstr[NGX_MAX_CONF_ERRSTR];
|
|
#endif
|
|
|
|
if (ctx->command.len == 2) {
|
|
if (ctx->conditional) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"the \"if\" command inside the \"if\" command");
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
}
|
|
|
|
if (ctx->output_chosen) {
|
|
ctx->output = 0;
|
|
return NGX_OK;
|
|
}
|
|
|
|
expr = params[NGX_HTTP_SSI_IF_EXPR];
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"ssi if expr=\"%V\"", expr);
|
|
|
|
left.data = expr->data;
|
|
last = expr->data + expr->len;
|
|
|
|
for (p = left.data; p < last; p++) {
|
|
if (*p >= 'A' && *p <= 'Z') {
|
|
*p |= 0x20;
|
|
continue;
|
|
}
|
|
|
|
if ((*p >= 'a' && *p <= 'z')
|
|
|| (*p >= '0' && *p <= '9')
|
|
|| *p == '$' || *p == '{' || *p == '}' || *p == '_'
|
|
|| *p == '"' || *p == '\'')
|
|
{
|
|
continue;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
left.len = p - left.data;
|
|
|
|
while (p < last && *p == ' ') {
|
|
p++;
|
|
}
|
|
|
|
flags = (p == last) ? NGX_HTTP_SSI_EXPR_TEST : 0;
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"left: \"%V\"", &left);
|
|
|
|
if (ngx_http_ssi_evaluate_string(r, ctx, &left, flags) != NGX_OK) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"evaluted left: \"%V\"", &left);
|
|
|
|
if (p == last) {
|
|
if (left.len) {
|
|
ctx->output = 1;
|
|
ctx->output_chosen = 1;
|
|
|
|
} else {
|
|
ctx->output = 0;
|
|
}
|
|
|
|
ctx->conditional = NGX_HTTP_SSI_COND_IF;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
if (p < last && *p == '=') {
|
|
negative = 0;
|
|
p++;
|
|
|
|
} else if (p + 1 < last && *p == '!' && *(p + 1) == '=') {
|
|
negative = 1;
|
|
p += 2;
|
|
|
|
} else {
|
|
goto invalid_expression;
|
|
}
|
|
|
|
while (p < last && *p == ' ') {
|
|
p++;
|
|
}
|
|
|
|
if (p < last && *p == '/') {
|
|
if (*(last - 1) != '/') {
|
|
goto invalid_expression;
|
|
}
|
|
|
|
noregex = 0;
|
|
flags = NGX_HTTP_SSI_ADD_ZERO;
|
|
last--;
|
|
p++;
|
|
|
|
} else {
|
|
noregex = 1;
|
|
flags = 0;
|
|
|
|
if (p < last - 1 && p[0] == '\\' && p[1] == '/') {
|
|
p++;
|
|
}
|
|
}
|
|
|
|
right.len = last - p;
|
|
right.data = p;
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"right: \"%V\"", &right);
|
|
|
|
if (ngx_http_ssi_evaluate_string(r, ctx, &right, flags) != NGX_OK) {
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"evaluted right: \"%V\"", &right);
|
|
|
|
if (noregex) {
|
|
if (left.len != right.len) {
|
|
rc = -1;
|
|
|
|
} else {
|
|
rc = ngx_strncmp(left.data, right.data, right.len);
|
|
}
|
|
|
|
} else {
|
|
#if (NGX_PCRE)
|
|
err.len = NGX_MAX_CONF_ERRSTR;
|
|
err.data = errstr;
|
|
|
|
right.data[right.len] = '\0';
|
|
|
|
regex = ngx_regex_compile(&right, 0, r->pool, &err);
|
|
|
|
if (regex == NULL) {
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "%s", err.data);
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
rc = ngx_regex_exec(regex, &left, NULL, 0);
|
|
|
|
if (rc != NGX_REGEX_NO_MATCHED && rc < 0) {
|
|
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"",
|
|
rc, &left, &right);
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
#else
|
|
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
"the using of the regex \"%V\" in SSI "
|
|
"requires PCRE library", &right);
|
|
|
|
return NGX_HTTP_SSI_ERROR;
|
|
#endif
|
|
}
|
|
|
|
if ((rc == 0 && !negative) || (rc != 0 && negative)) {
|
|
ctx->output = 1;
|
|
ctx->output_chosen = 1;
|
|
|
|
} else {
|
|
ctx->output = 0;
|
|
}
|
|
|
|
ctx->conditional = NGX_HTTP_SSI_COND_IF;
|
|
|
|
return NGX_OK;
|
|
|
|
invalid_expression:
|
|
|
|
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
"invalid expression in \"%V\"", expr);
|
|
|
|
return NGX_HTTP_SSI_ERROR;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_else(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
ngx_str_t **params)
|
|
{
|
|
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"ssi else");
|
|
|
|
if (ctx->output_chosen) {
|
|
ctx->output = 0;
|
|
} else {
|
|
ctx->output = 1;
|
|
}
|
|
|
|
ctx->conditional = NGX_HTTP_SSI_COND_ELSE;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_endif(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
ngx_str_t **params)
|
|
{
|
|
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"ssi endif");
|
|
|
|
ctx->output = 1;
|
|
ctx->output_chosen = 0;
|
|
ctx->conditional = 0;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_date_gmt_local_variable(ngx_http_request_t *r,
|
|
ngx_http_variable_value_t *v, uintptr_t gmt)
|
|
{
|
|
ngx_http_ssi_ctx_t *ctx;
|
|
ngx_time_t *tp;
|
|
struct tm tm;
|
|
char buf[NGX_HTTP_SSI_DATE_LEN];
|
|
|
|
v->valid = 1;
|
|
v->no_cachable = 0;
|
|
v->not_found = 0;
|
|
|
|
tp = ngx_timeofday();
|
|
|
|
ctx = ngx_http_get_module_ctx(r, ngx_http_ssi_filter_module);
|
|
|
|
if (ctx->timefmt.len == sizeof("%s") - 1
|
|
&& ctx->timefmt.data[0] == '%' && ctx->timefmt.data[1] == 's')
|
|
{
|
|
v->data = ngx_palloc(r->pool, NGX_TIME_T_LEN);
|
|
if (v->data == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
v->len = ngx_sprintf(v->data, "%T", tp->sec + (gmt ? 0 : tp->gmtoff))
|
|
- v->data;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
if (gmt) {
|
|
ngx_libc_gmtime(tp->sec, &tm);
|
|
} else {
|
|
ngx_libc_localtime(tp->sec, &tm);
|
|
}
|
|
|
|
v->len = strftime(buf, NGX_HTTP_SSI_DATE_LEN,
|
|
(char *) ctx->timefmt.data, &tm);
|
|
if (v->len == 0) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
v->data = ngx_palloc(r->pool, v->len);
|
|
if (v->data == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
ngx_memcpy(v->data, buf, v->len);
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_ssi_types(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
{
|
|
ngx_http_ssi_loc_conf_t *slcf = conf;
|
|
|
|
ngx_str_t *value, *type;
|
|
ngx_uint_t i;
|
|
|
|
if (slcf->types == NULL) {
|
|
slcf->types = ngx_array_create(cf->pool, 4, sizeof(ngx_str_t));
|
|
if (slcf->types == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
type = ngx_array_push(slcf->types);
|
|
if (type == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
type->len = sizeof("text/html") - 1;
|
|
type->data = (u_char *) "text/html";
|
|
}
|
|
|
|
value = cf->args->elts;
|
|
|
|
for (i = 1; i < cf->args->nelts; i++) {
|
|
|
|
if (ngx_strcmp(value[i].data, "text/html") == 0) {
|
|
continue;
|
|
}
|
|
|
|
type = ngx_array_push(slcf->types);
|
|
if (type == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
type->len = value[i].len;
|
|
|
|
type->data = ngx_palloc(cf->pool, type->len + 1);
|
|
if (type->data == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
ngx_cpystrn(type->data, value[i].data, type->len + 1);
|
|
}
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_preconfiguration(ngx_conf_t *cf)
|
|
{
|
|
ngx_int_t rc;
|
|
ngx_http_variable_t *var, *v;
|
|
ngx_http_ssi_command_t *cmd;
|
|
ngx_http_ssi_main_conf_t *smcf;
|
|
|
|
for (v = ngx_http_ssi_vars; v->name.len; v++) {
|
|
var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
if (var == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
var->get_handler = v->get_handler;
|
|
var->data = v->data;
|
|
}
|
|
|
|
smcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_ssi_filter_module);
|
|
|
|
for (cmd = ngx_http_ssi_commands; cmd->name.len; cmd++) {
|
|
rc = ngx_hash_add_key(&smcf->commands, &cmd->name, cmd,
|
|
NGX_HASH_READONLY_KEY);
|
|
|
|
if (rc == NGX_OK) {
|
|
continue;
|
|
}
|
|
|
|
if (rc == NGX_BUSY) {
|
|
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
"conflicting SSI command \"%V\"", &cmd->name);
|
|
}
|
|
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static void *
|
|
ngx_http_ssi_create_main_conf(ngx_conf_t *cf)
|
|
{
|
|
ngx_http_ssi_main_conf_t *smcf;
|
|
|
|
smcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssi_main_conf_t));
|
|
if (smcf == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
smcf->commands.pool = cf->pool;
|
|
smcf->commands.temp_pool = cf->temp_pool;
|
|
|
|
if (ngx_hash_keys_array_init(&smcf->commands, NGX_HASH_SMALL) != NGX_OK) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
return smcf;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_ssi_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
{
|
|
ngx_http_ssi_main_conf_t *smcf = conf;
|
|
|
|
ngx_hash_init_t hash;
|
|
|
|
hash.hash = &smcf->hash;
|
|
hash.key = ngx_hash_key;
|
|
hash.max_size = 1024;
|
|
hash.bucket_size = ngx_cacheline_size;
|
|
hash.name = "ssi_command_hash";
|
|
hash.pool = cf->pool;
|
|
hash.temp_pool = NULL;
|
|
|
|
if (ngx_hash_init(&hash, smcf->commands.keys.elts,
|
|
smcf->commands.keys.nelts)
|
|
!= NGX_OK)
|
|
{
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static void *
|
|
ngx_http_ssi_create_conf(ngx_conf_t *cf)
|
|
{
|
|
ngx_http_ssi_loc_conf_t *slcf;
|
|
|
|
slcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssi_loc_conf_t));
|
|
if (slcf == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
/*
|
|
* set by ngx_pcalloc():
|
|
*
|
|
* conf->types = NULL;
|
|
*/
|
|
|
|
slcf->enable = NGX_CONF_UNSET;
|
|
slcf->silent_errors = NGX_CONF_UNSET;
|
|
slcf->ignore_recycled_buffers = NGX_CONF_UNSET;
|
|
|
|
slcf->min_file_chunk = NGX_CONF_UNSET_SIZE;
|
|
slcf->value_len = NGX_CONF_UNSET_SIZE;
|
|
|
|
return slcf;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_ssi_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
{
|
|
ngx_http_ssi_loc_conf_t *prev = parent;
|
|
ngx_http_ssi_loc_conf_t *conf = child;
|
|
|
|
ngx_str_t *type;
|
|
|
|
ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
ngx_conf_merge_value(conf->silent_errors, prev->silent_errors, 0);
|
|
ngx_conf_merge_value(conf->ignore_recycled_buffers,
|
|
prev->ignore_recycled_buffers, 0);
|
|
|
|
ngx_conf_merge_size_value(conf->min_file_chunk, prev->min_file_chunk, 1024);
|
|
ngx_conf_merge_size_value(conf->value_len, prev->value_len, 256);
|
|
|
|
if (conf->types == NULL) {
|
|
if (prev->types == NULL) {
|
|
conf->types = ngx_array_create(cf->pool, 1, sizeof(ngx_str_t));
|
|
if (conf->types == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
type = ngx_array_push(conf->types);
|
|
if (type == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
type->len = sizeof("text/html") - 1;
|
|
type->data = (u_char *) "text/html";
|
|
|
|
} else {
|
|
conf->types = prev->types;
|
|
}
|
|
}
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_ssi_filter_init(ngx_cycle_t *cycle)
|
|
{
|
|
ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
ngx_http_top_header_filter = ngx_http_ssi_header_filter;
|
|
|
|
ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
ngx_http_top_body_filter = ngx_http_ssi_body_filter;
|
|
|
|
return NGX_OK;
|
|
}
|