Mercurial > hg > nginx-quic
view src/stream/ngx_stream_realip_module.c @ 6719:cebf5fed00bf
Modules compatibility: removed unneeded IPV6_V6ONLY checks.
The IPV6_V6ONLY macro is now checked only while parsing appropriate flag
and when using the macro.
The ipv6only field in listen structures is always initialized to 1,
even if not supported on a given platform. This is expected to prevent
a module compiled without IPV6_V6ONLY from accidentally creating dual
sockets if loaded into main binary with proper IPV6_V6ONLY support.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 03 Oct 2016 15:58:25 +0300 |
parents | 3908156a51fa |
children | df1a62c83b1b |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_stream.h> typedef struct { ngx_array_t *from; /* array of ngx_cidr_t */ } ngx_stream_realip_srv_conf_t; typedef struct { struct sockaddr *sockaddr; socklen_t socklen; ngx_str_t addr_text; } ngx_stream_realip_ctx_t; static ngx_int_t ngx_stream_realip_handler(ngx_stream_session_t *s); static ngx_int_t ngx_stream_realip_set_addr(ngx_stream_session_t *s, ngx_addr_t *addr); static char *ngx_stream_realip_from(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static void *ngx_stream_realip_create_srv_conf(ngx_conf_t *cf); static char *ngx_stream_realip_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child); static ngx_int_t ngx_stream_realip_add_variables(ngx_conf_t *cf); static ngx_int_t ngx_stream_realip_init(ngx_conf_t *cf); static ngx_int_t ngx_stream_realip_remote_addr_variable(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_stream_realip_remote_port_variable(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); static ngx_command_t ngx_stream_realip_commands[] = { { ngx_string("set_real_ip_from"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_stream_realip_from, NGX_STREAM_SRV_CONF_OFFSET, 0, NULL }, ngx_null_command }; static ngx_stream_module_t ngx_stream_realip_module_ctx = { ngx_stream_realip_add_variables, /* preconfiguration */ ngx_stream_realip_init, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ ngx_stream_realip_create_srv_conf, /* create server configuration */ ngx_stream_realip_merge_srv_conf /* merge server configuration */ }; ngx_module_t ngx_stream_realip_module = { NGX_MODULE_V1, &ngx_stream_realip_module_ctx, /* module context */ ngx_stream_realip_commands, /* module directives */ NGX_STREAM_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_stream_variable_t ngx_stream_realip_vars[] = { { ngx_string("realip_remote_addr"), NULL, ngx_stream_realip_remote_addr_variable, 0, 0, 0 }, { ngx_string("realip_remote_port"), NULL, ngx_stream_realip_remote_port_variable, 0, 0, 0 }, { ngx_null_string, NULL, NULL, 0, 0, 0 } }; static ngx_int_t ngx_stream_realip_handler(ngx_stream_session_t *s) { ngx_addr_t addr; ngx_connection_t *c; ngx_stream_realip_srv_conf_t *rscf; rscf = ngx_stream_get_module_srv_conf(s, ngx_stream_realip_module); if (rscf->from == NULL) { return NGX_DECLINED; } c = s->connection; if (c->proxy_protocol_addr.len == 0) { return NGX_DECLINED; } if (ngx_cidr_match(c->sockaddr, rscf->from) != NGX_OK) { return NGX_DECLINED; } if (ngx_parse_addr(c->pool, &addr, c->proxy_protocol_addr.data, c->proxy_protocol_addr.len) != NGX_OK) { return NGX_DECLINED; } ngx_inet_set_port(addr.sockaddr, c->proxy_protocol_port); return ngx_stream_realip_set_addr(s, &addr); } static ngx_int_t ngx_stream_realip_set_addr(ngx_stream_session_t *s, ngx_addr_t *addr) { size_t len; u_char *p; u_char text[NGX_SOCKADDR_STRLEN]; ngx_connection_t *c; ngx_stream_realip_ctx_t *ctx; c = s->connection; ctx = ngx_palloc(c->pool, sizeof(ngx_stream_realip_ctx_t)); if (ctx == NULL) { return NGX_ERROR; } len = ngx_sock_ntop(addr->sockaddr, addr->socklen, text, NGX_SOCKADDR_STRLEN, 0); if (len == 0) { return NGX_ERROR; } p = ngx_pnalloc(c->pool, len); if (p == NULL) { return NGX_ERROR; } ngx_memcpy(p, text, len); ngx_stream_set_ctx(s, ctx, ngx_stream_realip_module); ctx->sockaddr = c->sockaddr; ctx->socklen = c->socklen; ctx->addr_text = c->addr_text; c->sockaddr = addr->sockaddr; c->socklen = addr->socklen; c->addr_text.len = len; c->addr_text.data = p; return NGX_DECLINED; } static char * ngx_stream_realip_from(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_stream_realip_srv_conf_t *rscf = conf; ngx_int_t rc; ngx_str_t *value; ngx_cidr_t *cidr; value = cf->args->elts; if (rscf->from == NULL) { rscf->from = ngx_array_create(cf->pool, 2, sizeof(ngx_cidr_t)); if (rscf->from == NULL) { return NGX_CONF_ERROR; } } cidr = ngx_array_push(rscf->from); if (cidr == NULL) { return NGX_CONF_ERROR; } #if (NGX_HAVE_UNIX_DOMAIN) if (ngx_strcmp(value[1].data, "unix:") == 0) { cidr->family = AF_UNIX; return NGX_CONF_OK; } #endif rc = ngx_ptocidr(&value[1], cidr); if (rc == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[1]); return NGX_CONF_ERROR; } if (rc == NGX_DONE) { ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "low address bits of %V are meaningless", &value[1]); } return NGX_CONF_OK; } static void * ngx_stream_realip_create_srv_conf(ngx_conf_t *cf) { ngx_stream_realip_srv_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_realip_srv_conf_t)); if (conf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * conf->from = NULL; */ return conf; } static char * ngx_stream_realip_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_stream_realip_srv_conf_t *prev = parent; ngx_stream_realip_srv_conf_t *conf = child; if (conf->from == NULL) { conf->from = prev->from; } return NGX_CONF_OK; } static ngx_int_t ngx_stream_realip_add_variables(ngx_conf_t *cf) { ngx_stream_variable_t *var, *v; for (v = ngx_stream_realip_vars; v->name.len; v++) { var = ngx_stream_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 ngx_int_t ngx_stream_realip_init(ngx_conf_t *cf) { ngx_stream_handler_pt *h; ngx_stream_core_main_conf_t *cmcf; cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module); h = ngx_array_push(&cmcf->phases[NGX_STREAM_POST_ACCEPT_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_stream_realip_handler; return NGX_OK; } static ngx_int_t ngx_stream_realip_remote_addr_variable(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data) { ngx_str_t *addr_text; ngx_stream_realip_ctx_t *ctx; ctx = ngx_stream_get_module_ctx(s, ngx_stream_realip_module); addr_text = ctx ? &ctx->addr_text : &s->connection->addr_text; v->len = addr_text->len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = addr_text->data; return NGX_OK; } static ngx_int_t ngx_stream_realip_remote_port_variable(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data) { ngx_uint_t port; struct sockaddr *sa; ngx_stream_realip_ctx_t *ctx; ctx = ngx_stream_get_module_ctx(s, ngx_stream_realip_module); sa = ctx ? ctx->sockaddr : s->connection->sockaddr; v->len = 0; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = ngx_pnalloc(s->connection->pool, sizeof("65535") - 1); if (v->data == NULL) { return NGX_ERROR; } port = ngx_inet_get_port(sa); if (port > 0 && port < 65536) { v->len = ngx_sprintf(v->data, "%ui", port) - v->data; } return NGX_OK; }