Mercurial > hg > nginx
view src/http/modules/ngx_http_geoip_module.c @ 8045:aa28c802409f
Resolver: make TCP write timer event cancelable.
Similar to 70e65bf8dfd7, the change is made to ensure that the ability to
cancel resolver tasks is fully controlled by the caller. As mentioned in the
referenced commit, it is safe to make this timer cancelable because resolve
tasks can have their own timeouts that are not cancelable.
The scenario where this may become a problem is a periodic background resolve
task (not tied to a specific request or a client connection), which receives a
response with short TTL, large enough to warrant fallback to a TCP query.
With each event loop wakeup, we either have a previously set write timer
instance or schedule a new one. The non-cancelable write timer can delay or
block graceful shutdown of a worker even if the ngx_resolver_ctx_t->cancelable
flag is set by the API user, and there are no other tasks or connections.
We use the resolver API in this way to maintain the list of upstream server
addresses specified with the 'resolve' parameter, and there could be third-party
modules implementing similar logic.
author | Aleksei Bavshin <a.bavshin@f5.com> |
---|---|
date | Wed, 01 Jun 2022 20:17:23 -0700 |
parents | ef6a3a99a81a |
children |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> #include <GeoIP.h> #include <GeoIPCity.h> #define NGX_GEOIP_COUNTRY_CODE 0 #define NGX_GEOIP_COUNTRY_CODE3 1 #define NGX_GEOIP_COUNTRY_NAME 2 typedef struct { GeoIP *country; GeoIP *org; GeoIP *city; ngx_array_t *proxies; /* array of ngx_cidr_t */ ngx_flag_t proxy_recursive; #if (NGX_HAVE_GEOIP_V6) unsigned country_v6:1; unsigned org_v6:1; unsigned city_v6:1; #endif } ngx_http_geoip_conf_t; typedef struct { ngx_str_t *name; uintptr_t data; } ngx_http_geoip_var_t; typedef const char *(*ngx_http_geoip_variable_handler_pt)(GeoIP *, u_long addr); ngx_http_geoip_variable_handler_pt ngx_http_geoip_country_functions[] = { GeoIP_country_code_by_ipnum, GeoIP_country_code3_by_ipnum, GeoIP_country_name_by_ipnum, }; #if (NGX_HAVE_GEOIP_V6) typedef const char *(*ngx_http_geoip_variable_handler_v6_pt)(GeoIP *, geoipv6_t addr); ngx_http_geoip_variable_handler_v6_pt ngx_http_geoip_country_v6_functions[] = { GeoIP_country_code_by_ipnum_v6, GeoIP_country_code3_by_ipnum_v6, GeoIP_country_name_by_ipnum_v6, }; #endif static ngx_int_t ngx_http_geoip_country_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_geoip_org_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_geoip_city_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_geoip_region_name_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_geoip_city_float_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_geoip_city_int_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static GeoIPRecord *ngx_http_geoip_get_city_record(ngx_http_request_t *r); static ngx_int_t ngx_http_geoip_add_variables(ngx_conf_t *cf); static void *ngx_http_geoip_create_conf(ngx_conf_t *cf); static char *ngx_http_geoip_init_conf(ngx_conf_t *cf, void *conf); static char *ngx_http_geoip_country(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_geoip_org(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_geoip_city(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_geoip_proxy(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_int_t ngx_http_geoip_cidr_value(ngx_conf_t *cf, ngx_str_t *net, ngx_cidr_t *cidr); static void ngx_http_geoip_cleanup(void *data); static ngx_command_t ngx_http_geoip_commands[] = { { ngx_string("geoip_country"), NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE12, ngx_http_geoip_country, NGX_HTTP_MAIN_CONF_OFFSET, 0, NULL }, { ngx_string("geoip_org"), NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE12, ngx_http_geoip_org, NGX_HTTP_MAIN_CONF_OFFSET, 0, NULL }, { ngx_string("geoip_city"), NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE12, ngx_http_geoip_city, NGX_HTTP_MAIN_CONF_OFFSET, 0, NULL }, { ngx_string("geoip_proxy"), NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, ngx_http_geoip_proxy, NGX_HTTP_MAIN_CONF_OFFSET, 0, NULL }, { ngx_string("geoip_proxy_recursive"), NGX_HTTP_MAIN_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_MAIN_CONF_OFFSET, offsetof(ngx_http_geoip_conf_t, proxy_recursive), NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_geoip_module_ctx = { ngx_http_geoip_add_variables, /* preconfiguration */ NULL, /* postconfiguration */ ngx_http_geoip_create_conf, /* create main configuration */ ngx_http_geoip_init_conf, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ NULL, /* create location configuration */ NULL /* merge location configuration */ }; ngx_module_t ngx_http_geoip_module = { NGX_MODULE_V1, &ngx_http_geoip_module_ctx, /* module context */ ngx_http_geoip_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_http_variable_t ngx_http_geoip_vars[] = { { ngx_string("geoip_country_code"), NULL, ngx_http_geoip_country_variable, NGX_GEOIP_COUNTRY_CODE, 0, 0 }, { ngx_string("geoip_country_code3"), NULL, ngx_http_geoip_country_variable, NGX_GEOIP_COUNTRY_CODE3, 0, 0 }, { ngx_string("geoip_country_name"), NULL, ngx_http_geoip_country_variable, NGX_GEOIP_COUNTRY_NAME, 0, 0 }, { ngx_string("geoip_org"), NULL, ngx_http_geoip_org_variable, 0, 0, 0 }, { ngx_string("geoip_city_continent_code"), NULL, ngx_http_geoip_city_variable, offsetof(GeoIPRecord, continent_code), 0, 0 }, { ngx_string("geoip_city_country_code"), NULL, ngx_http_geoip_city_variable, offsetof(GeoIPRecord, country_code), 0, 0 }, { ngx_string("geoip_city_country_code3"), NULL, ngx_http_geoip_city_variable, offsetof(GeoIPRecord, country_code3), 0, 0 }, { ngx_string("geoip_city_country_name"), NULL, ngx_http_geoip_city_variable, offsetof(GeoIPRecord, country_name), 0, 0 }, { ngx_string("geoip_region"), NULL, ngx_http_geoip_city_variable, offsetof(GeoIPRecord, region), 0, 0 }, { ngx_string("geoip_region_name"), NULL, ngx_http_geoip_region_name_variable, 0, 0, 0 }, { ngx_string("geoip_city"), NULL, ngx_http_geoip_city_variable, offsetof(GeoIPRecord, city), 0, 0 }, { ngx_string("geoip_postal_code"), NULL, ngx_http_geoip_city_variable, offsetof(GeoIPRecord, postal_code), 0, 0 }, { ngx_string("geoip_latitude"), NULL, ngx_http_geoip_city_float_variable, offsetof(GeoIPRecord, latitude), 0, 0 }, { ngx_string("geoip_longitude"), NULL, ngx_http_geoip_city_float_variable, offsetof(GeoIPRecord, longitude), 0, 0 }, { ngx_string("geoip_dma_code"), NULL, ngx_http_geoip_city_int_variable, offsetof(GeoIPRecord, dma_code), 0, 0 }, { ngx_string("geoip_area_code"), NULL, ngx_http_geoip_city_int_variable, offsetof(GeoIPRecord, area_code), 0, 0 }, ngx_http_null_variable }; static u_long ngx_http_geoip_addr(ngx_http_request_t *r, ngx_http_geoip_conf_t *gcf) { ngx_addr_t addr; ngx_table_elt_t *xfwd; struct sockaddr_in *sin; addr.sockaddr = r->connection->sockaddr; addr.socklen = r->connection->socklen; /* addr.name = r->connection->addr_text; */ xfwd = r->headers_in.x_forwarded_for; if (xfwd != NULL && gcf->proxies != NULL) { (void) ngx_http_get_forwarded_addr(r, &addr, xfwd, NULL, gcf->proxies, gcf->proxy_recursive); } #if (NGX_HAVE_INET6) if (addr.sockaddr->sa_family == AF_INET6) { u_char *p; in_addr_t inaddr; struct in6_addr *inaddr6; inaddr6 = &((struct sockaddr_in6 *) addr.sockaddr)->sin6_addr; if (IN6_IS_ADDR_V4MAPPED(inaddr6)) { p = inaddr6->s6_addr; inaddr = p[12] << 24; inaddr += p[13] << 16; inaddr += p[14] << 8; inaddr += p[15]; return inaddr; } } #endif if (addr.sockaddr->sa_family != AF_INET) { return INADDR_NONE; } sin = (struct sockaddr_in *) addr.sockaddr; return ntohl(sin->sin_addr.s_addr); } #if (NGX_HAVE_GEOIP_V6) static geoipv6_t ngx_http_geoip_addr_v6(ngx_http_request_t *r, ngx_http_geoip_conf_t *gcf) { ngx_addr_t addr; ngx_table_elt_t *xfwd; in_addr_t addr4; struct in6_addr addr6; struct sockaddr_in *sin; struct sockaddr_in6 *sin6; addr.sockaddr = r->connection->sockaddr; addr.socklen = r->connection->socklen; /* addr.name = r->connection->addr_text; */ xfwd = r->headers_in.x_forwarded_for; if (xfwd != NULL && gcf->proxies != NULL) { (void) ngx_http_get_forwarded_addr(r, &addr, xfwd, NULL, gcf->proxies, gcf->proxy_recursive); } switch (addr.sockaddr->sa_family) { case AF_INET: /* Produce IPv4-mapped IPv6 address. */ sin = (struct sockaddr_in *) addr.sockaddr; addr4 = ntohl(sin->sin_addr.s_addr); ngx_memzero(&addr6, sizeof(struct in6_addr)); addr6.s6_addr[10] = 0xff; addr6.s6_addr[11] = 0xff; addr6.s6_addr[12] = addr4 >> 24; addr6.s6_addr[13] = addr4 >> 16; addr6.s6_addr[14] = addr4 >> 8; addr6.s6_addr[15] = addr4; return addr6; case AF_INET6: sin6 = (struct sockaddr_in6 *) addr.sockaddr; return sin6->sin6_addr; default: return in6addr_any; } } #endif static ngx_int_t ngx_http_geoip_country_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_http_geoip_variable_handler_pt handler = ngx_http_geoip_country_functions[data]; #if (NGX_HAVE_GEOIP_V6) ngx_http_geoip_variable_handler_v6_pt handler_v6 = ngx_http_geoip_country_v6_functions[data]; #endif const char *val; ngx_http_geoip_conf_t *gcf; gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module); if (gcf->country == NULL) { goto not_found; } #if (NGX_HAVE_GEOIP_V6) val = gcf->country_v6 ? handler_v6(gcf->country, ngx_http_geoip_addr_v6(r, gcf)) : handler(gcf->country, ngx_http_geoip_addr(r, gcf)); #else val = handler(gcf->country, ngx_http_geoip_addr(r, gcf)); #endif if (val == NULL) { goto not_found; } v->len = ngx_strlen(val); v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = (u_char *) val; return NGX_OK; not_found: v->not_found = 1; return NGX_OK; } static ngx_int_t ngx_http_geoip_org_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { size_t len; char *val; ngx_http_geoip_conf_t *gcf; gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module); if (gcf->org == NULL) { goto not_found; } #if (NGX_HAVE_GEOIP_V6) val = gcf->org_v6 ? GeoIP_name_by_ipnum_v6(gcf->org, ngx_http_geoip_addr_v6(r, gcf)) : GeoIP_name_by_ipnum(gcf->org, ngx_http_geoip_addr(r, gcf)); #else val = GeoIP_name_by_ipnum(gcf->org, ngx_http_geoip_addr(r, gcf)); #endif if (val == NULL) { goto not_found; } len = ngx_strlen(val); v->data = ngx_pnalloc(r->pool, len); if (v->data == NULL) { ngx_free(val); return NGX_ERROR; } ngx_memcpy(v->data, val, len); v->len = len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; ngx_free(val); return NGX_OK; not_found: v->not_found = 1; return NGX_OK; } static ngx_int_t ngx_http_geoip_city_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { char *val; size_t len; GeoIPRecord *gr; gr = ngx_http_geoip_get_city_record(r); if (gr == NULL) { goto not_found; } val = *(char **) ((char *) gr + data); if (val == NULL) { goto no_value; } len = ngx_strlen(val); v->data = ngx_pnalloc(r->pool, len); if (v->data == NULL) { GeoIPRecord_delete(gr); return NGX_ERROR; } ngx_memcpy(v->data, val, len); v->len = len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; GeoIPRecord_delete(gr); return NGX_OK; no_value: GeoIPRecord_delete(gr); not_found: v->not_found = 1; return NGX_OK; } static ngx_int_t ngx_http_geoip_region_name_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { size_t len; const char *val; GeoIPRecord *gr; gr = ngx_http_geoip_get_city_record(r); if (gr == NULL) { goto not_found; } val = GeoIP_region_name_by_code(gr->country_code, gr->region); GeoIPRecord_delete(gr); if (val == NULL) { goto not_found; } len = ngx_strlen(val); v->data = ngx_pnalloc(r->pool, len); if (v->data == NULL) { return NGX_ERROR; } ngx_memcpy(v->data, val, len); v->len = len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; return NGX_OK; not_found: v->not_found = 1; return NGX_OK; } static ngx_int_t ngx_http_geoip_city_float_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { float val; GeoIPRecord *gr; gr = ngx_http_geoip_get_city_record(r); if (gr == NULL) { v->not_found = 1; return NGX_OK; } v->data = ngx_pnalloc(r->pool, NGX_INT64_LEN + 5); if (v->data == NULL) { GeoIPRecord_delete(gr); return NGX_ERROR; } val = *(float *) ((char *) gr + data); v->len = ngx_sprintf(v->data, "%.4f", val) - v->data; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; GeoIPRecord_delete(gr); return NGX_OK; } static ngx_int_t ngx_http_geoip_city_int_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { int val; GeoIPRecord *gr; gr = ngx_http_geoip_get_city_record(r); if (gr == NULL) { v->not_found = 1; return NGX_OK; } v->data = ngx_pnalloc(r->pool, NGX_INT64_LEN); if (v->data == NULL) { GeoIPRecord_delete(gr); return NGX_ERROR; } val = *(int *) ((char *) gr + data); v->len = ngx_sprintf(v->data, "%d", val) - v->data; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; GeoIPRecord_delete(gr); return NGX_OK; } static GeoIPRecord * ngx_http_geoip_get_city_record(ngx_http_request_t *r) { ngx_http_geoip_conf_t *gcf; gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module); if (gcf->city) { #if (NGX_HAVE_GEOIP_V6) return gcf->city_v6 ? GeoIP_record_by_ipnum_v6(gcf->city, ngx_http_geoip_addr_v6(r, gcf)) : GeoIP_record_by_ipnum(gcf->city, ngx_http_geoip_addr(r, gcf)); #else return GeoIP_record_by_ipnum(gcf->city, ngx_http_geoip_addr(r, gcf)); #endif } return NULL; } static ngx_int_t ngx_http_geoip_add_variables(ngx_conf_t *cf) { ngx_http_variable_t *var, *v; for (v = ngx_http_geoip_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; } return NGX_OK; } static void * ngx_http_geoip_create_conf(ngx_conf_t *cf) { ngx_pool_cleanup_t *cln; ngx_http_geoip_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_geoip_conf_t)); if (conf == NULL) { return NULL; } conf->proxy_recursive = NGX_CONF_UNSET; cln = ngx_pool_cleanup_add(cf->pool, 0); if (cln == NULL) { return NULL; } cln->handler = ngx_http_geoip_cleanup; cln->data = conf; return conf; } static char * ngx_http_geoip_init_conf(ngx_conf_t *cf, void *conf) { ngx_http_geoip_conf_t *gcf = conf; ngx_conf_init_value(gcf->proxy_recursive, 0); return NGX_CONF_OK; } static char * ngx_http_geoip_country(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_geoip_conf_t *gcf = conf; ngx_str_t *value; if (gcf->country) { return "is duplicate"; } value = cf->args->elts; gcf->country = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE); if (gcf->country == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "GeoIP_open(\"%V\") failed", &value[1]); return NGX_CONF_ERROR; } if (cf->args->nelts == 3) { if (ngx_strcmp(value[2].data, "utf8") == 0) { GeoIP_set_charset(gcf->country, GEOIP_CHARSET_UTF8); } else { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[2]); return NGX_CONF_ERROR; } } switch (gcf->country->databaseType) { case GEOIP_COUNTRY_EDITION: return NGX_CONF_OK; #if (NGX_HAVE_GEOIP_V6) case GEOIP_COUNTRY_EDITION_V6: gcf->country_v6 = 1; return NGX_CONF_OK; #endif default: ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid GeoIP database \"%V\" type:%d", &value[1], gcf->country->databaseType); return NGX_CONF_ERROR; } } static char * ngx_http_geoip_org(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_geoip_conf_t *gcf = conf; ngx_str_t *value; if (gcf->org) { return "is duplicate"; } value = cf->args->elts; gcf->org = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE); if (gcf->org == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "GeoIP_open(\"%V\") failed", &value[1]); return NGX_CONF_ERROR; } if (cf->args->nelts == 3) { if (ngx_strcmp(value[2].data, "utf8") == 0) { GeoIP_set_charset(gcf->org, GEOIP_CHARSET_UTF8); } else { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[2]); return NGX_CONF_ERROR; } } switch (gcf->org->databaseType) { case GEOIP_ISP_EDITION: case GEOIP_ORG_EDITION: case GEOIP_DOMAIN_EDITION: case GEOIP_ASNUM_EDITION: return NGX_CONF_OK; #if (NGX_HAVE_GEOIP_V6) case GEOIP_ISP_EDITION_V6: case GEOIP_ORG_EDITION_V6: case GEOIP_DOMAIN_EDITION_V6: case GEOIP_ASNUM_EDITION_V6: gcf->org_v6 = 1; return NGX_CONF_OK; #endif default: ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid GeoIP database \"%V\" type:%d", &value[1], gcf->org->databaseType); return NGX_CONF_ERROR; } } static char * ngx_http_geoip_city(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_geoip_conf_t *gcf = conf; ngx_str_t *value; if (gcf->city) { return "is duplicate"; } value = cf->args->elts; gcf->city = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE); if (gcf->city == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "GeoIP_open(\"%V\") failed", &value[1]); return NGX_CONF_ERROR; } if (cf->args->nelts == 3) { if (ngx_strcmp(value[2].data, "utf8") == 0) { GeoIP_set_charset(gcf->city, GEOIP_CHARSET_UTF8); } else { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[2]); return NGX_CONF_ERROR; } } switch (gcf->city->databaseType) { case GEOIP_CITY_EDITION_REV0: case GEOIP_CITY_EDITION_REV1: return NGX_CONF_OK; #if (NGX_HAVE_GEOIP_V6) case GEOIP_CITY_EDITION_REV0_V6: case GEOIP_CITY_EDITION_REV1_V6: gcf->city_v6 = 1; return NGX_CONF_OK; #endif default: ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid GeoIP City database \"%V\" type:%d", &value[1], gcf->city->databaseType); return NGX_CONF_ERROR; } } static char * ngx_http_geoip_proxy(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_geoip_conf_t *gcf = conf; ngx_str_t *value; ngx_cidr_t cidr, *c; value = cf->args->elts; if (ngx_http_geoip_cidr_value(cf, &value[1], &cidr) != NGX_OK) { return NGX_CONF_ERROR; } if (gcf->proxies == NULL) { gcf->proxies = ngx_array_create(cf->pool, 4, sizeof(ngx_cidr_t)); if (gcf->proxies == NULL) { return NGX_CONF_ERROR; } } c = ngx_array_push(gcf->proxies); if (c == NULL) { return NGX_CONF_ERROR; } *c = cidr; return NGX_CONF_OK; } static ngx_int_t ngx_http_geoip_cidr_value(ngx_conf_t *cf, ngx_str_t *net, ngx_cidr_t *cidr) { ngx_int_t rc; if (ngx_strcmp(net->data, "255.255.255.255") == 0) { cidr->family = AF_INET; cidr->u.in.addr = 0xffffffff; cidr->u.in.mask = 0xffffffff; return NGX_OK; } rc = ngx_ptocidr(net, cidr); if (rc == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid network \"%V\"", net); return NGX_ERROR; } if (rc == NGX_DONE) { ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "low address bits of %V are meaningless", net); } return NGX_OK; } static void ngx_http_geoip_cleanup(void *data) { ngx_http_geoip_conf_t *gcf = data; if (gcf->country) { GeoIP_delete(gcf->country); } if (gcf->org) { GeoIP_delete(gcf->org); } if (gcf->city) { GeoIP_delete(gcf->city); } }