| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_http.h> |
| |
| |
| #define NGX_HTTP_USERID_OFF 0 |
| #define NGX_HTTP_USERID_LOG 1 |
| #define NGX_HTTP_USERID_V1 2 |
| #define NGX_HTTP_USERID_ON 3 |
| |
| #define NGX_HTTP_USERID_COOKIE_OFF 0x0002 |
| #define NGX_HTTP_USERID_COOKIE_SECURE 0x0004 |
| #define NGX_HTTP_USERID_COOKIE_HTTPONLY 0x0008 |
| #define NGX_HTTP_USERID_COOKIE_SAMESITE 0x0010 |
| #define NGX_HTTP_USERID_COOKIE_SAMESITE_STRICT 0x0020 |
| #define NGX_HTTP_USERID_COOKIE_SAMESITE_LAX 0x0040 |
| #define NGX_HTTP_USERID_COOKIE_SAMESITE_NONE 0x0080 |
| |
| /* 31 Dec 2037 23:55:55 GMT */ |
| #define NGX_HTTP_USERID_MAX_EXPIRES 2145916555 |
| |
| |
| typedef struct { |
| ngx_uint_t enable; |
| ngx_uint_t flags; |
| |
| ngx_int_t service; |
| |
| ngx_str_t name; |
| ngx_str_t domain; |
| ngx_str_t path; |
| ngx_str_t p3p; |
| |
| time_t expires; |
| |
| u_char mark; |
| } ngx_http_userid_conf_t; |
| |
| |
| typedef struct { |
| uint32_t uid_got[4]; |
| uint32_t uid_set[4]; |
| ngx_str_t cookie; |
| ngx_uint_t reset; |
| } ngx_http_userid_ctx_t; |
| |
| |
| static ngx_http_userid_ctx_t *ngx_http_userid_get_uid(ngx_http_request_t *r, |
| ngx_http_userid_conf_t *conf); |
| 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); |
| static ngx_int_t ngx_http_userid_set_uid(ngx_http_request_t *r, |
| ngx_http_userid_ctx_t *ctx, ngx_http_userid_conf_t *conf); |
| static ngx_int_t ngx_http_userid_create_uid(ngx_http_request_t *r, |
| ngx_http_userid_ctx_t *ctx, ngx_http_userid_conf_t *conf); |
| |
| static ngx_int_t ngx_http_userid_add_variables(ngx_conf_t *cf); |
| static ngx_int_t ngx_http_userid_init(ngx_conf_t *cf); |
| static void *ngx_http_userid_create_conf(ngx_conf_t *cf); |
| static char *ngx_http_userid_merge_conf(ngx_conf_t *cf, void *parent, |
| void *child); |
| static char *ngx_http_userid_domain(ngx_conf_t *cf, void *post, void *data); |
| static char *ngx_http_userid_path(ngx_conf_t *cf, void *post, void *data); |
| static char *ngx_http_userid_expires(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| static char *ngx_http_userid_p3p(ngx_conf_t *cf, void *post, void *data); |
| static char *ngx_http_userid_mark(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| static ngx_int_t ngx_http_userid_init_worker(ngx_cycle_t *cycle); |
| |
| |
| |
| static uint32_t start_value; |
| static uint32_t sequencer_v1 = 1; |
| static uint32_t sequencer_v2 = 0x03030302; |
| |
| |
| static u_char expires[] = "; expires=Thu, 31-Dec-37 23:55:55 GMT"; |
| |
| |
| static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
| |
| |
| static ngx_conf_enum_t ngx_http_userid_state[] = { |
| { ngx_string("off"), NGX_HTTP_USERID_OFF }, |
| { ngx_string("log"), NGX_HTTP_USERID_LOG }, |
| { ngx_string("v1"), NGX_HTTP_USERID_V1 }, |
| { ngx_string("on"), NGX_HTTP_USERID_ON }, |
| { ngx_null_string, 0 } |
| }; |
| |
| |
| static ngx_conf_bitmask_t ngx_http_userid_flags[] = { |
| { ngx_string("off"), NGX_HTTP_USERID_COOKIE_OFF }, |
| { ngx_string("secure"), NGX_HTTP_USERID_COOKIE_SECURE }, |
| { ngx_string("httponly"), NGX_HTTP_USERID_COOKIE_HTTPONLY }, |
| { ngx_string("samesite=strict"), |
| NGX_HTTP_USERID_COOKIE_SAMESITE|NGX_HTTP_USERID_COOKIE_SAMESITE_STRICT }, |
| { ngx_string("samesite=lax"), |
| NGX_HTTP_USERID_COOKIE_SAMESITE|NGX_HTTP_USERID_COOKIE_SAMESITE_LAX }, |
| { ngx_string("samesite=none"), |
| NGX_HTTP_USERID_COOKIE_SAMESITE|NGX_HTTP_USERID_COOKIE_SAMESITE_NONE }, |
| { ngx_null_string, 0 } |
| }; |
| |
| |
| static ngx_conf_post_handler_pt ngx_http_userid_domain_p = |
| ngx_http_userid_domain; |
| static ngx_conf_post_handler_pt ngx_http_userid_path_p = ngx_http_userid_path; |
| static ngx_conf_post_handler_pt ngx_http_userid_p3p_p = ngx_http_userid_p3p; |
| |
| |
| static ngx_command_t ngx_http_userid_commands[] = { |
| |
| { ngx_string("userid"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_enum_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_userid_conf_t, enable), |
| ngx_http_userid_state }, |
| |
| { ngx_string("userid_service"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_num_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_userid_conf_t, service), |
| NULL }, |
| |
| { ngx_string("userid_name"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_userid_conf_t, name), |
| NULL }, |
| |
| { ngx_string("userid_domain"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_userid_conf_t, domain), |
| &ngx_http_userid_domain_p }, |
| |
| { ngx_string("userid_path"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_userid_conf_t, path), |
| &ngx_http_userid_path_p }, |
| |
| { ngx_string("userid_expires"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_http_userid_expires, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("userid_flags"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123, |
| ngx_conf_set_bitmask_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_userid_conf_t, flags), |
| &ngx_http_userid_flags }, |
| |
| { ngx_string("userid_p3p"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_userid_conf_t, p3p), |
| &ngx_http_userid_p3p_p }, |
| |
| { ngx_string("userid_mark"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_http_userid_mark, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| ngx_null_command |
| }; |
| |
| |
| static ngx_http_module_t ngx_http_userid_filter_module_ctx = { |
| ngx_http_userid_add_variables, /* preconfiguration */ |
| ngx_http_userid_init, /* postconfiguration */ |
| |
| NULL, /* create main configuration */ |
| NULL, /* init main configuration */ |
| |
| NULL, /* create server configuration */ |
| NULL, /* merge server configuration */ |
| |
| ngx_http_userid_create_conf, /* create location configuration */ |
| ngx_http_userid_merge_conf /* merge location configuration */ |
| }; |
| |
| |
| ngx_module_t ngx_http_userid_filter_module = { |
| NGX_MODULE_V1, |
| &ngx_http_userid_filter_module_ctx, /* module context */ |
| ngx_http_userid_commands, /* module directives */ |
| NGX_HTTP_MODULE, /* module type */ |
| NULL, /* init master */ |
| NULL, /* init module */ |
| ngx_http_userid_init_worker, /* init process */ |
| NULL, /* init thread */ |
| NULL, /* exit thread */ |
| NULL, /* exit process */ |
| NULL, /* exit master */ |
| NGX_MODULE_V1_PADDING |
| }; |
| |
| |
| static ngx_str_t ngx_http_userid_got = ngx_string("uid_got"); |
| static ngx_str_t ngx_http_userid_set = ngx_string("uid_set"); |
| static ngx_str_t ngx_http_userid_reset = ngx_string("uid_reset"); |
| static ngx_uint_t ngx_http_userid_reset_index; |
| |
| |
| static ngx_int_t |
| ngx_http_userid_filter(ngx_http_request_t *r) |
| { |
| ngx_http_userid_ctx_t *ctx; |
| ngx_http_userid_conf_t *conf; |
| |
| if (r != r->main) { |
| return ngx_http_next_header_filter(r); |
| } |
| |
| conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_filter_module); |
| |
| if (conf->enable < NGX_HTTP_USERID_V1) { |
| return ngx_http_next_header_filter(r); |
| } |
| |
| ctx = ngx_http_userid_get_uid(r, conf); |
| |
| if (ctx == NULL) { |
| return NGX_ERROR; |
| } |
| |
| if (ngx_http_userid_set_uid(r, ctx, conf) == NGX_OK) { |
| return ngx_http_next_header_filter(r); |
| } |
| |
| return NGX_ERROR; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_userid_got_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_http_userid_ctx_t *ctx; |
| ngx_http_userid_conf_t *conf; |
| |
| conf = ngx_http_get_module_loc_conf(r->main, ngx_http_userid_filter_module); |
| |
| if (conf->enable == NGX_HTTP_USERID_OFF) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| ctx = ngx_http_userid_get_uid(r->main, conf); |
| |
| if (ctx == NULL) { |
| return NGX_ERROR; |
| } |
| |
| if (ctx->uid_got[3] != 0) { |
| return ngx_http_userid_variable(r->main, v, &conf->name, ctx->uid_got); |
| } |
| |
| v->not_found = 1; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_userid_set_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_http_userid_ctx_t *ctx; |
| ngx_http_userid_conf_t *conf; |
| |
| conf = ngx_http_get_module_loc_conf(r->main, ngx_http_userid_filter_module); |
| |
| if (conf->enable < NGX_HTTP_USERID_V1) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| ctx = ngx_http_userid_get_uid(r->main, conf); |
| |
| if (ctx == NULL) { |
| return NGX_ERROR; |
| } |
| |
| if (ngx_http_userid_create_uid(r->main, ctx, conf) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| if (ctx->uid_set[3] == 0) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| return ngx_http_userid_variable(r->main, v, &conf->name, ctx->uid_set); |
| } |
| |
| |
| static ngx_http_userid_ctx_t * |
| ngx_http_userid_get_uid(ngx_http_request_t *r, ngx_http_userid_conf_t *conf) |
| { |
| ngx_int_t n; |
| ngx_str_t src, dst; |
| ngx_table_elt_t **cookies; |
| ngx_http_userid_ctx_t *ctx; |
| |
| ctx = ngx_http_get_module_ctx(r, ngx_http_userid_filter_module); |
| |
| if (ctx) { |
| return ctx; |
| } |
| |
| if (ctx == NULL) { |
| ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_userid_ctx_t)); |
| if (ctx == NULL) { |
| return NULL; |
| } |
| |
| ngx_http_set_ctx(r, ctx, ngx_http_userid_filter_module); |
| } |
| |
| n = ngx_http_parse_multi_header_lines(&r->headers_in.cookies, &conf->name, |
| &ctx->cookie); |
| if (n == NGX_DECLINED) { |
| return ctx; |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "uid cookie: \"%V\"", &ctx->cookie); |
| |
| if (ctx->cookie.len < 22) { |
| cookies = r->headers_in.cookies.elts; |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "client sent too short userid cookie \"%V\"", |
| &cookies[n]->value); |
| return ctx; |
| } |
| |
| src = ctx->cookie; |
| |
| /* |
| * we have to limit the encoded string to 22 characters because |
| * 1) cookie may be marked by "userid_mark", |
| * 2) and there are already the millions cookies with a garbage |
| * instead of the correct base64 trail "==" |
| */ |
| |
| src.len = 22; |
| |
| dst.data = (u_char *) ctx->uid_got; |
| |
| if (ngx_decode_base64(&dst, &src) == NGX_ERROR) { |
| cookies = r->headers_in.cookies.elts; |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "client sent invalid userid cookie \"%V\"", |
| &cookies[n]->value); |
| return ctx; |
| } |
| |
| ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "uid: %08XD%08XD%08XD%08XD", |
| ctx->uid_got[0], ctx->uid_got[1], |
| ctx->uid_got[2], ctx->uid_got[3]); |
| |
| return ctx; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_userid_set_uid(ngx_http_request_t *r, ngx_http_userid_ctx_t *ctx, |
| ngx_http_userid_conf_t *conf) |
| { |
| u_char *cookie, *p; |
| size_t len; |
| ngx_str_t src, dst; |
| ngx_table_elt_t *set_cookie, *p3p; |
| |
| if (ngx_http_userid_create_uid(r, ctx, conf) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| if (ctx->uid_set[3] == 0) { |
| return NGX_OK; |
| } |
| |
| len = conf->name.len + 1 + ngx_base64_encoded_length(16) + conf->path.len; |
| |
| if (conf->expires) { |
| len += sizeof(expires) - 1 + 2; |
| } |
| |
| if (conf->domain.len) { |
| len += conf->domain.len; |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_SECURE) { |
| len += sizeof("; secure") - 1; |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_HTTPONLY) { |
| len += sizeof("; httponly") - 1; |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_SAMESITE_STRICT) { |
| len += sizeof("; samesite=strict") - 1; |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_SAMESITE_LAX) { |
| len += sizeof("; samesite=lax") - 1; |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_SAMESITE_NONE) { |
| len += sizeof("; samesite=none") - 1; |
| } |
| |
| cookie = ngx_pnalloc(r->pool, len); |
| if (cookie == NULL) { |
| return NGX_ERROR; |
| } |
| |
| p = ngx_copy(cookie, conf->name.data, conf->name.len); |
| *p++ = '='; |
| |
| if (ctx->uid_got[3] == 0 || ctx->reset) { |
| src.len = 16; |
| src.data = (u_char *) ctx->uid_set; |
| dst.data = p; |
| |
| ngx_encode_base64(&dst, &src); |
| |
| p += dst.len; |
| |
| if (conf->mark) { |
| *(p - 2) = conf->mark; |
| } |
| |
| } else { |
| p = ngx_cpymem(p, ctx->cookie.data, 22); |
| *p++ = conf->mark; |
| *p++ = '='; |
| } |
| |
| if (conf->expires == NGX_HTTP_USERID_MAX_EXPIRES) { |
| p = ngx_cpymem(p, expires, sizeof(expires) - 1); |
| |
| } else if (conf->expires) { |
| p = ngx_cpymem(p, expires, sizeof("; expires=") - 1); |
| p = ngx_http_cookie_time(p, ngx_time() + conf->expires); |
| } |
| |
| p = ngx_copy(p, conf->domain.data, conf->domain.len); |
| |
| p = ngx_copy(p, conf->path.data, conf->path.len); |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_SECURE) { |
| p = ngx_cpymem(p, "; secure", sizeof("; secure") - 1); |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_HTTPONLY) { |
| p = ngx_cpymem(p, "; httponly", sizeof("; httponly") - 1); |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_SAMESITE_STRICT) { |
| p = ngx_cpymem(p, "; samesite=strict", sizeof("; samesite=strict") - 1); |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_SAMESITE_LAX) { |
| p = ngx_cpymem(p, "; samesite=lax", sizeof("; samesite=lax") - 1); |
| } |
| |
| if (conf->flags & NGX_HTTP_USERID_COOKIE_SAMESITE_NONE) { |
| p = ngx_cpymem(p, "; samesite=none", sizeof("; samesite=none") - 1); |
| } |
| |
| set_cookie = ngx_list_push(&r->headers_out.headers); |
| if (set_cookie == NULL) { |
| return NGX_ERROR; |
| } |
| |
| set_cookie->hash = 1; |
| ngx_str_set(&set_cookie->key, "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; |
| ngx_str_set(&p3p->key, "P3P"); |
| p3p->value = conf->p3p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_userid_create_uid(ngx_http_request_t *r, ngx_http_userid_ctx_t *ctx, |
| ngx_http_userid_conf_t *conf) |
| { |
| ngx_connection_t *c; |
| struct sockaddr_in *sin; |
| ngx_http_variable_value_t *vv; |
| #if (NGX_HAVE_INET6) |
| u_char *p; |
| struct sockaddr_in6 *sin6; |
| #endif |
| |
| if (ctx->uid_set[3] != 0) { |
| return NGX_OK; |
| } |
| |
| if (ctx->uid_got[3] != 0) { |
| |
| vv = ngx_http_get_indexed_variable(r, ngx_http_userid_reset_index); |
| |
| if (vv == NULL || vv->not_found) { |
| return NGX_ERROR; |
| } |
| |
| if (vv->len == 0 || (vv->len == 1 && vv->data[0] == '0')) { |
| |
| if (conf->mark == '\0' |
| || (ctx->cookie.len > 23 |
| && ctx->cookie.data[22] == conf->mark |
| && ctx->cookie.data[23] == '=')) |
| { |
| return NGX_OK; |
| } |
| |
| ctx->uid_set[0] = ctx->uid_got[0]; |
| ctx->uid_set[1] = ctx->uid_got[1]; |
| ctx->uid_set[2] = ctx->uid_got[2]; |
| ctx->uid_set[3] = ctx->uid_got[3]; |
| |
| return NGX_OK; |
| |
| } else { |
| ctx->reset = 1; |
| |
| if (vv->len == 3 && ngx_strncmp(vv->data, "log", 3) == 0) { |
| ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, |
| "userid cookie \"%V=%08XD%08XD%08XD%08XD\" was reset", |
| &conf->name, ctx->uid_got[0], ctx->uid_got[1], |
| ctx->uid_got[2], ctx->uid_got[3]); |
| } |
| } |
| } |
| |
| /* |
| * TODO: in the threaded mode the sequencers should be in TLS and their |
| * ranges should be divided between threads |
| */ |
| |
| if (conf->enable == NGX_HTTP_USERID_V1) { |
| if (conf->service == NGX_CONF_UNSET) { |
| ctx->uid_set[0] = 0; |
| } else { |
| ctx->uid_set[0] = conf->service; |
| } |
| ctx->uid_set[1] = (uint32_t) ngx_time(); |
| ctx->uid_set[2] = start_value; |
| ctx->uid_set[3] = sequencer_v1; |
| sequencer_v1 += 0x100; |
| |
| } else { |
| if (conf->service == NGX_CONF_UNSET) { |
| |
| c = r->connection; |
| |
| if (ngx_connection_local_sockaddr(c, NULL, 0) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| switch (c->local_sockaddr->sa_family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| sin6 = (struct sockaddr_in6 *) c->local_sockaddr; |
| |
| p = (u_char *) &ctx->uid_set[0]; |
| |
| *p++ = sin6->sin6_addr.s6_addr[12]; |
| *p++ = sin6->sin6_addr.s6_addr[13]; |
| *p++ = sin6->sin6_addr.s6_addr[14]; |
| *p = sin6->sin6_addr.s6_addr[15]; |
| |
| break; |
| #endif |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| case AF_UNIX: |
| ctx->uid_set[0] = 0; |
| break; |
| #endif |
| |
| default: /* AF_INET */ |
| sin = (struct sockaddr_in *) c->local_sockaddr; |
| ctx->uid_set[0] = sin->sin_addr.s_addr; |
| break; |
| } |
| |
| } else { |
| ctx->uid_set[0] = htonl(conf->service); |
| } |
| |
| ctx->uid_set[1] = htonl((uint32_t) ngx_time()); |
| ctx->uid_set[2] = htonl(start_value); |
| ctx->uid_set[3] = htonl(sequencer_v2); |
| sequencer_v2 += 0x100; |
| if (sequencer_v2 < 0x03030302) { |
| sequencer_v2 = 0x03030302; |
| } |
| } |
| |
| 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_reset_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| *v = ngx_http_variable_null_value; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_userid_add_variables(ngx_conf_t *cf) |
| { |
| ngx_int_t n; |
| 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, 0); |
| if (var == NULL) { |
| return NGX_ERROR; |
| } |
| |
| var->get_handler = ngx_http_userid_set_variable; |
| |
| var = ngx_http_add_variable(cf, &ngx_http_userid_reset, |
| NGX_HTTP_VAR_CHANGEABLE); |
| if (var == NULL) { |
| return NGX_ERROR; |
| } |
| |
| var->get_handler = ngx_http_userid_reset_variable; |
| |
| n = ngx_http_get_variable_index(cf, &ngx_http_userid_reset); |
| if (n == NGX_ERROR) { |
| return NGX_ERROR; |
| } |
| |
| ngx_http_userid_reset_index = n; |
| |
| 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->flags = 0; |
| * conf->name = { 0, NULL }; |
| * conf->domain = { 0, NULL }; |
| * conf->path = { 0, NULL }; |
| * conf->p3p = { 0, 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_bitmask_value(conf->flags, prev->flags, |
| (NGX_CONF_BITMASK_SET|NGX_HTTP_USERID_COOKIE_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) { |
| ngx_str_set(domain, ""); |
| 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 == (time_t) NGX_ERROR) { |
| return "invalid value"; |
| } |
| |
| 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) { |
| ngx_str_set(p3p, ""); |
| } |
| |
| 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 = (((uint32_t) tp.tv_usec / 20) << 16) | ngx_pid; |
| |
| return NGX_OK; |
| } |
