784 lines
20 KiB
C
784 lines
20 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_USERID_OFF 0
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#define NGX_HTTP_USERID_LOG 1
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#define NGX_HTTP_USERID_V1 2
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#define NGX_HTTP_USERID_ON 3
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/* 31 Dec 2037 23:55:55 GMT */
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#define NGX_HTTP_USERID_MAX_EXPIRES 2145916555
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typedef struct {
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ngx_uint_t enable;
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ngx_int_t service;
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ngx_str_t name;
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ngx_str_t domain;
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ngx_str_t path;
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ngx_str_t p3p;
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time_t expires;
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u_char mark;
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} ngx_http_userid_conf_t;
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typedef struct {
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uint32_t uid_got[4];
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uint32_t uid_set[4];
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ngx_str_t cookie;
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} ngx_http_userid_ctx_t;
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static ngx_http_userid_ctx_t *ngx_http_userid_get_uid(ngx_http_request_t *r,
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ngx_http_userid_conf_t *conf);
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static ngx_int_t ngx_http_userid_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, ngx_str_t *name, uint32_t *uid);
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static ngx_int_t ngx_http_userid_set_uid(ngx_http_request_t *r,
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ngx_http_userid_ctx_t *ctx, ngx_http_userid_conf_t *conf);
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static ngx_int_t ngx_http_userid_add_variables(ngx_conf_t *cf);
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static ngx_int_t ngx_http_userid_init(ngx_conf_t *cf);
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static void *ngx_http_userid_create_conf(ngx_conf_t *cf);
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static char *ngx_http_userid_merge_conf(ngx_conf_t *cf, void *parent,
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void *child);
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static char *ngx_http_userid_domain(ngx_conf_t *cf, void *post, void *data);
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static char *ngx_http_userid_path(ngx_conf_t *cf, void *post, void *data);
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static char *ngx_http_userid_expires(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static char *ngx_http_userid_p3p(ngx_conf_t *cf, void *post, void *data);
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static char *ngx_http_userid_mark(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static ngx_int_t ngx_http_userid_init_worker(ngx_cycle_t *cycle);
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static uint32_t start_value;
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static uint32_t sequencer_v1 = 1;
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static uint32_t sequencer_v2 = 0x03030302;
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static u_char expires[] = "; expires=Thu, 31-Dec-37 23:55:55 GMT";
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static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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static ngx_conf_enum_t ngx_http_userid_state[] = {
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{ ngx_string("off"), NGX_HTTP_USERID_OFF },
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{ ngx_string("log"), NGX_HTTP_USERID_LOG },
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{ ngx_string("v1"), NGX_HTTP_USERID_V1 },
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{ ngx_string("on"), NGX_HTTP_USERID_ON },
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{ ngx_null_string, 0 }
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};
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static ngx_conf_post_handler_pt ngx_http_userid_domain_p =
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ngx_http_userid_domain;
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static ngx_conf_post_handler_pt ngx_http_userid_path_p = ngx_http_userid_path;
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static ngx_conf_post_handler_pt ngx_http_userid_p3p_p = ngx_http_userid_p3p;
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static ngx_command_t ngx_http_userid_commands[] = {
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{ ngx_string("userid"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_enum_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_userid_conf_t, enable),
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ngx_http_userid_state },
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{ ngx_string("userid_service"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_num_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_userid_conf_t, service),
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NULL },
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{ ngx_string("userid_name"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_str_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_userid_conf_t, name),
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NULL },
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{ ngx_string("userid_domain"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_str_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_userid_conf_t, domain),
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&ngx_http_userid_domain_p },
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{ ngx_string("userid_path"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_str_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_userid_conf_t, path),
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&ngx_http_userid_path_p },
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{ ngx_string("userid_expires"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_http_userid_expires,
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NGX_HTTP_LOC_CONF_OFFSET,
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0,
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NULL },
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{ ngx_string("userid_p3p"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_str_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_userid_conf_t, p3p),
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&ngx_http_userid_p3p_p },
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{ ngx_string("userid_mark"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_http_userid_mark,
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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_userid_filter_module_ctx = {
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ngx_http_userid_add_variables, /* preconfiguration */
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ngx_http_userid_init, /* postconfiguration */
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NULL, /* create main configuration */
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NULL, /* 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_userid_create_conf, /* create location configration */
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ngx_http_userid_merge_conf /* merge location configration */
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};
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ngx_module_t ngx_http_userid_filter_module = {
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NGX_MODULE_V1,
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&ngx_http_userid_filter_module_ctx, /* module context */
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ngx_http_userid_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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ngx_http_userid_init_worker, /* 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_str_t ngx_http_userid_got = ngx_string("uid_got");
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static ngx_str_t ngx_http_userid_set = ngx_string("uid_set");
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static ngx_int_t
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ngx_http_userid_filter(ngx_http_request_t *r)
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{
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ngx_http_userid_ctx_t *ctx;
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ngx_http_userid_conf_t *conf;
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if (r != r->main) {
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return ngx_http_next_header_filter(r);
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}
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conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_filter_module);
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if (conf->enable <= NGX_HTTP_USERID_LOG) {
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return ngx_http_next_header_filter(r);
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}
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ctx = ngx_http_userid_get_uid(r, conf);
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if (ctx == NULL) {
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return NGX_ERROR;
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}
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if (ctx->uid_got[3] != 0) {
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if (conf->mark == '\0') {
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return ngx_http_next_header_filter(r);
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} else {
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if (ctx->cookie.len > 23
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&& ctx->cookie.data[22] == conf->mark
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&& ctx->cookie.data[23] == '=')
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{
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return ngx_http_next_header_filter(r);
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}
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}
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}
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/* ctx->status == NGX_DECLINED */
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if (ngx_http_userid_set_uid(r, ctx, conf) == NGX_OK) {
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return ngx_http_next_header_filter(r);
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}
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return NGX_ERROR;
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}
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static ngx_int_t
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ngx_http_userid_got_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data)
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{
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ngx_http_userid_ctx_t *ctx;
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ngx_http_userid_conf_t *conf;
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conf = ngx_http_get_module_loc_conf(r->main, ngx_http_userid_filter_module);
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if (conf->enable == NGX_HTTP_USERID_OFF) {
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v->not_found = 1;
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return NGX_OK;
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}
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ctx = ngx_http_userid_get_uid(r, conf);
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if (ctx == NULL) {
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return NGX_ERROR;
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}
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if (ctx->uid_got[3] != 0) {
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return ngx_http_userid_variable(r, v, &conf->name, ctx->uid_got);
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}
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/* ctx->status == NGX_DECLINED */
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v->not_found = 1;
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return NGX_OK;
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}
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static ngx_int_t
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ngx_http_userid_set_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data)
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{
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ngx_http_userid_ctx_t *ctx;
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ngx_http_userid_conf_t *conf;
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ctx = ngx_http_get_module_ctx(r, ngx_http_userid_filter_module);
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if (ctx == NULL || ctx->uid_set[3] == 0) {
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v->not_found = 1;
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return NGX_OK;
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}
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conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_filter_module);
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return ngx_http_userid_variable(r, v, &conf->name, ctx->uid_set);
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}
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static ngx_http_userid_ctx_t *
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ngx_http_userid_get_uid(ngx_http_request_t *r, ngx_http_userid_conf_t *conf)
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{
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ngx_int_t n;
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ngx_str_t src, dst;
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ngx_table_elt_t **cookies;
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ngx_http_userid_ctx_t *ctx;
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ctx = ngx_http_get_module_ctx(r, ngx_http_userid_filter_module);
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if (ctx) {
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return ctx;
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}
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if (ctx == NULL) {
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ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_userid_ctx_t));
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if (ctx == NULL) {
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return NULL;
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}
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ngx_http_set_ctx(r, ctx, ngx_http_userid_filter_module);
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}
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n = ngx_http_parse_multi_header_lines(&r->headers_in.cookies, &conf->name,
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&ctx->cookie);
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if (n == NGX_DECLINED) {
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return ctx;
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}
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"uid cookie: \"%V\"", &ctx->cookie);
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if (ctx->cookie.len < 22) {
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cookies = r->headers_in.cookies.elts;
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"client sent too short userid cookie \"%V\"",
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&cookies[n]->value);
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return ctx;
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}
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src = ctx->cookie;
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/*
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* we have to limit the encoded string to 22 characters because
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* 1) cookie may be marked by "userid_mark",
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* 2) and there are already the millions cookies with a garbage
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* instead of the correct base64 trail "=="
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*/
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src.len = 22;
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dst.data = (u_char *) ctx->uid_got;
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if (ngx_decode_base64(&dst, &src) == NGX_ERROR) {
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cookies = r->headers_in.cookies.elts;
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"client sent invalid userid cookie \"%V\"",
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&cookies[n]->value);
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return ctx;
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}
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ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"uid: %08XD%08XD%08XD%08XD",
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ctx->uid_got[0], ctx->uid_got[1],
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ctx->uid_got[2], ctx->uid_got[3]);
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return ctx;
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}
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static ngx_int_t
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ngx_http_userid_set_uid(ngx_http_request_t *r, ngx_http_userid_ctx_t *ctx,
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ngx_http_userid_conf_t *conf)
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{
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u_char *cookie, *p;
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size_t len;
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ngx_str_t src, dst;
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ngx_table_elt_t *set_cookie, *p3p;
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ngx_connection_t *c;
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struct sockaddr_in *sin;
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#if (NGX_HAVE_INET6)
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struct sockaddr_in6 *sin6;
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#endif
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/*
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* TODO: in the threaded mode the sequencers should be in TLS and their
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* ranges should be divided between threads
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*/
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if (ctx->uid_got[3] == 0) {
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if (conf->enable == NGX_HTTP_USERID_V1) {
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if (conf->service == NGX_CONF_UNSET) {
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ctx->uid_set[0] = 0;
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} else {
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ctx->uid_set[0] = conf->service;
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}
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ctx->uid_set[1] = (uint32_t) ngx_time();
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ctx->uid_set[2] = start_value;
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ctx->uid_set[3] = sequencer_v1;
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sequencer_v1 += 0x100;
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} else {
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if (conf->service == NGX_CONF_UNSET) {
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c = r->connection;
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if (ngx_connection_local_sockaddr(c, NULL, 0) != NGX_OK) {
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return NGX_ERROR;
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}
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switch (c->local_sockaddr->sa_family) {
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#if (NGX_HAVE_INET6)
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case AF_INET6:
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sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
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p = (u_char *) &ctx->uid_set[0];
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*p++ = sin6->sin6_addr.s6_addr[12];
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*p++ = sin6->sin6_addr.s6_addr[13];
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*p++ = sin6->sin6_addr.s6_addr[14];
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*p = sin6->sin6_addr.s6_addr[15];
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break;
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#endif
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default: /* AF_INET */
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sin = (struct sockaddr_in *) c->local_sockaddr;
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ctx->uid_set[0] = sin->sin_addr.s_addr;
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break;
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}
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} else {
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ctx->uid_set[0] = htonl(conf->service);
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}
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ctx->uid_set[1] = htonl((uint32_t) ngx_time());
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ctx->uid_set[2] = htonl(start_value);
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ctx->uid_set[3] = htonl(sequencer_v2);
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sequencer_v2 += 0x100;
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if (sequencer_v2 < 0x03030302) {
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sequencer_v2 = 0x03030302;
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}
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}
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} else {
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ctx->uid_set[0] = ctx->uid_got[0];
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ctx->uid_set[1] = ctx->uid_got[1];
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ctx->uid_set[2] = ctx->uid_got[2];
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ctx->uid_set[3] = ctx->uid_got[3];
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}
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len = conf->name.len + 1 + ngx_base64_encoded_length(16) + conf->path.len;
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if (conf->expires) {
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len += sizeof(expires) - 1 + 2;
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}
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if (conf->domain.len) {
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len += conf->domain.len;
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}
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cookie = ngx_pnalloc(r->pool, len);
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if (cookie == NULL) {
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return NGX_ERROR;
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}
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p = ngx_copy(cookie, conf->name.data, conf->name.len);
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*p++ = '=';
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if (ctx->uid_got[3] == 0) {
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src.len = 16;
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src.data = (u_char *) ctx->uid_set;
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dst.data = p;
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ngx_encode_base64(&dst, &src);
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p += dst.len;
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if (conf->mark) {
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*(p - 2) = conf->mark;
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}
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} else {
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p = ngx_cpymem(p, ctx->cookie.data, 22);
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*p++ = conf->mark;
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*p++ = '=';
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}
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if (conf->expires == NGX_HTTP_USERID_MAX_EXPIRES) {
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p = ngx_cpymem(p, expires, sizeof(expires) - 1);
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} else if (conf->expires) {
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p = ngx_cpymem(p, expires, sizeof("; expires=") - 1);
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p = ngx_http_cookie_time(p, ngx_time() + conf->expires);
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}
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|
|
p = ngx_copy(p, conf->domain.data, conf->domain.len);
|
|
|
|
p = ngx_copy(p, conf->path.data, conf->path.len);
|
|
|
|
set_cookie = ngx_list_push(&r->headers_out.headers);
|
|
if (set_cookie == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
set_cookie->hash = 1;
|
|
set_cookie->key.len = sizeof("Set-Cookie") - 1;
|
|
set_cookie->key.data = (u_char *) "Set-Cookie";
|
|
set_cookie->value.len = p - cookie;
|
|
set_cookie->value.data = cookie;
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"uid cookie: \"%V\"", &set_cookie->value);
|
|
|
|
if (conf->p3p.len == 0) {
|
|
return NGX_OK;
|
|
}
|
|
|
|
p3p = ngx_list_push(&r->headers_out.headers);
|
|
if (p3p == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
p3p->hash = 1;
|
|
p3p->key.len = sizeof("P3P") - 1;
|
|
p3p->key.data = (u_char *) "P3P";
|
|
p3p->value = conf->p3p;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_userid_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
ngx_str_t *name, uint32_t *uid)
|
|
{
|
|
v->len = name->len + sizeof("=00001111222233334444555566667777") - 1;
|
|
v->data = ngx_pnalloc(r->pool, v->len);
|
|
if (v->data == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
v->valid = 1;
|
|
v->no_cacheable = 0;
|
|
v->not_found = 0;
|
|
|
|
ngx_sprintf(v->data, "%V=%08XD%08XD%08XD%08XD",
|
|
name, uid[0], uid[1], uid[2], uid[3]);
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_userid_add_variables(ngx_conf_t *cf)
|
|
{
|
|
ngx_http_variable_t *var;
|
|
|
|
var = ngx_http_add_variable(cf, &ngx_http_userid_got, 0);
|
|
if (var == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
var->get_handler = ngx_http_userid_got_variable;
|
|
|
|
var = ngx_http_add_variable(cf, &ngx_http_userid_set, NGX_HTTP_VAR_NOHASH);
|
|
if (var == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
var->get_handler = ngx_http_userid_set_variable;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static void *
|
|
ngx_http_userid_create_conf(ngx_conf_t *cf)
|
|
{
|
|
ngx_http_userid_conf_t *conf;
|
|
|
|
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_userid_conf_t));
|
|
if (conf == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* set by ngx_pcalloc():
|
|
*
|
|
* conf->name.len = 0;
|
|
* conf->name.date = NULL;
|
|
* conf->domain.len = 0;
|
|
* conf->domain.date = NULL;
|
|
* conf->path.len = 0;
|
|
* conf->path.date = NULL;
|
|
* conf->p3p.len = 0;
|
|
* conf->p3p.date = NULL;
|
|
*/
|
|
|
|
conf->enable = NGX_CONF_UNSET_UINT;
|
|
conf->service = NGX_CONF_UNSET;
|
|
conf->expires = NGX_CONF_UNSET;
|
|
conf->mark = (u_char) '\xFF';
|
|
|
|
return conf;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_userid_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
{
|
|
ngx_http_userid_conf_t *prev = parent;
|
|
ngx_http_userid_conf_t *conf = child;
|
|
|
|
ngx_conf_merge_uint_value(conf->enable, prev->enable,
|
|
NGX_HTTP_USERID_OFF);
|
|
|
|
ngx_conf_merge_str_value(conf->name, prev->name, "uid");
|
|
ngx_conf_merge_str_value(conf->domain, prev->domain, "");
|
|
ngx_conf_merge_str_value(conf->path, prev->path, "; path=/");
|
|
ngx_conf_merge_str_value(conf->p3p, prev->p3p, "");
|
|
|
|
ngx_conf_merge_value(conf->service, prev->service, NGX_CONF_UNSET);
|
|
ngx_conf_merge_sec_value(conf->expires, prev->expires, 0);
|
|
|
|
if (conf->mark == (u_char) '\xFF') {
|
|
if (prev->mark == (u_char) '\xFF') {
|
|
conf->mark = '\0';
|
|
} else {
|
|
conf->mark = prev->mark;
|
|
}
|
|
}
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_userid_init(ngx_conf_t *cf)
|
|
{
|
|
ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
ngx_http_top_header_filter = ngx_http_userid_filter;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_userid_domain(ngx_conf_t *cf, void *post, void *data)
|
|
{
|
|
ngx_str_t *domain = data;
|
|
|
|
u_char *p, *new;
|
|
|
|
if (ngx_strcmp(domain->data, "none") == 0) {
|
|
domain->len = 0;
|
|
domain->data = (u_char *) "";
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
new = ngx_pnalloc(cf->pool, sizeof("; domain=") - 1 + domain->len);
|
|
if (new == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
p = ngx_cpymem(new, "; domain=", sizeof("; domain=") - 1);
|
|
ngx_memcpy(p, domain->data, domain->len);
|
|
|
|
domain->len += sizeof("; domain=") - 1;
|
|
domain->data = new;
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_userid_path(ngx_conf_t *cf, void *post, void *data)
|
|
{
|
|
ngx_str_t *path = data;
|
|
|
|
u_char *p, *new;
|
|
|
|
new = ngx_pnalloc(cf->pool, sizeof("; path=") - 1 + path->len);
|
|
if (new == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
p = ngx_cpymem(new, "; path=", sizeof("; path=") - 1);
|
|
ngx_memcpy(p, path->data, path->len);
|
|
|
|
path->len += sizeof("; path=") - 1;
|
|
path->data = new;
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_userid_expires(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
{
|
|
ngx_http_userid_conf_t *ucf = conf;
|
|
|
|
ngx_str_t *value;
|
|
|
|
if (ucf->expires != NGX_CONF_UNSET) {
|
|
return "is duplicate";
|
|
}
|
|
|
|
value = cf->args->elts;
|
|
|
|
if (ngx_strcmp(value[1].data, "max") == 0) {
|
|
ucf->expires = NGX_HTTP_USERID_MAX_EXPIRES;
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
if (ngx_strcmp(value[1].data, "off") == 0) {
|
|
ucf->expires = 0;
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
ucf->expires = ngx_parse_time(&value[1], 1);
|
|
if (ucf->expires == NGX_ERROR) {
|
|
return "invalid value";
|
|
}
|
|
|
|
if (ucf->expires == NGX_PARSE_LARGE_TIME) {
|
|
return "value must be less than 68 years";
|
|
}
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_userid_p3p(ngx_conf_t *cf, void *post, void *data)
|
|
{
|
|
ngx_str_t *p3p = data;
|
|
|
|
if (ngx_strcmp(p3p->data, "none") == 0) {
|
|
p3p->len = 0;
|
|
p3p->data = (u_char *) "";
|
|
}
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static char *
|
|
ngx_http_userid_mark(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
{
|
|
ngx_http_userid_conf_t *ucf = conf;
|
|
|
|
ngx_str_t *value;
|
|
|
|
if (ucf->mark != (u_char) '\xFF') {
|
|
return "is duplicate";
|
|
}
|
|
|
|
value = cf->args->elts;
|
|
|
|
if (ngx_strcmp(value[1].data, "off") == 0) {
|
|
ucf->mark = '\0';
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
if (value[1].len != 1
|
|
|| !((value[1].data[0] >= '0' && value[1].data[0] <= '9')
|
|
|| (value[1].data[0] >= 'A' && value[1].data[0] <= 'Z')
|
|
|| (value[1].data[0] >= 'a' && value[1].data[0] <= 'z')
|
|
|| value[1].data[0] == '='))
|
|
{
|
|
return "value must be \"off\" or a single letter, digit or \"=\"";
|
|
}
|
|
|
|
ucf->mark = value[1].data[0];
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_http_userid_init_worker(ngx_cycle_t *cycle)
|
|
{
|
|
struct timeval tp;
|
|
|
|
ngx_gettimeofday(&tp);
|
|
|
|
/* use the most significant usec part that fits to 16 bits */
|
|
start_value = ((tp.tv_usec / 20) << 16) | ngx_pid;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|