Mercurial > hg > nginx-quic
view src/mail/ngx_mail.c @ 6443:fc72784b1f52
Threads: writing via threads pools in event pipe.
The "aio_write" directive is introduced, which enables use of aio
for writing. Currently it is meaningful only with "aio threads".
Note that aio operations can be done by both event pipe and output
chain, so proper mapping between r->aio and p->aio is provided when
calling ngx_event_pipe() and in output filter.
In collaboration with Valentin Bartenev.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 18 Mar 2016 06:44:49 +0300 |
parents | cf5e822cf470 |
children | c90cf79d0e1d |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #include <ngx_mail.h> static char *ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_int_t ngx_mail_add_ports(ngx_conf_t *cf, ngx_array_t *ports, ngx_mail_listen_t *listen); static char *ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports); static ngx_int_t ngx_mail_add_addrs(ngx_conf_t *cf, ngx_mail_port_t *mport, ngx_mail_conf_addr_t *addr); #if (NGX_HAVE_INET6) static ngx_int_t ngx_mail_add_addrs6(ngx_conf_t *cf, ngx_mail_port_t *mport, ngx_mail_conf_addr_t *addr); #endif static ngx_int_t ngx_mail_cmp_conf_addrs(const void *one, const void *two); ngx_uint_t ngx_mail_max_module; static ngx_command_t ngx_mail_commands[] = { { ngx_string("mail"), NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, ngx_mail_block, 0, 0, NULL }, ngx_null_command }; static ngx_core_module_t ngx_mail_module_ctx = { ngx_string("mail"), NULL, NULL }; ngx_module_t ngx_mail_module = { NGX_MODULE_V1, &ngx_mail_module_ctx, /* module context */ ngx_mail_commands, /* module directives */ NGX_CORE_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 char * ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *rv; ngx_uint_t i, m, mi, s; ngx_conf_t pcf; ngx_array_t ports; ngx_mail_listen_t *listen; ngx_mail_module_t *module; ngx_mail_conf_ctx_t *ctx; ngx_mail_core_srv_conf_t **cscfp; ngx_mail_core_main_conf_t *cmcf; if (*(ngx_mail_conf_ctx_t **) conf) { return "is duplicate"; } /* the main mail context */ ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t)); if (ctx == NULL) { return NGX_CONF_ERROR; } *(ngx_mail_conf_ctx_t **) conf = ctx; /* count the number of the mail modules and set up their indices */ ngx_mail_max_module = ngx_count_modules(cf->cycle, NGX_MAIL_MODULE); /* the mail main_conf context, it is the same in the all mail contexts */ ctx->main_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module); if (ctx->main_conf == NULL) { return NGX_CONF_ERROR; } /* * the mail null srv_conf context, it is used to merge * the server{}s' srv_conf's */ ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module); if (ctx->srv_conf == NULL) { return NGX_CONF_ERROR; } /* * create the main_conf's and the null srv_conf's of the all mail modules */ for (m = 0; cf->cycle->modules[m]; m++) { if (cf->cycle->modules[m]->type != NGX_MAIL_MODULE) { continue; } module = cf->cycle->modules[m]->ctx; mi = cf->cycle->modules[m]->ctx_index; if (module->create_main_conf) { ctx->main_conf[mi] = module->create_main_conf(cf); if (ctx->main_conf[mi] == NULL) { return NGX_CONF_ERROR; } } if (module->create_srv_conf) { ctx->srv_conf[mi] = module->create_srv_conf(cf); if (ctx->srv_conf[mi] == NULL) { return NGX_CONF_ERROR; } } } /* parse inside the mail{} block */ pcf = *cf; cf->ctx = ctx; cf->module_type = NGX_MAIL_MODULE; cf->cmd_type = NGX_MAIL_MAIN_CONF; rv = ngx_conf_parse(cf, NULL); if (rv != NGX_CONF_OK) { *cf = pcf; return rv; } /* init mail{} main_conf's, merge the server{}s' srv_conf's */ cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index]; cscfp = cmcf->servers.elts; for (m = 0; cf->cycle->modules[m]; m++) { if (cf->cycle->modules[m]->type != NGX_MAIL_MODULE) { continue; } module = cf->cycle->modules[m]->ctx; mi = cf->cycle->modules[m]->ctx_index; /* init mail{} main_conf's */ cf->ctx = ctx; if (module->init_main_conf) { rv = module->init_main_conf(cf, ctx->main_conf[mi]); if (rv != NGX_CONF_OK) { *cf = pcf; return rv; } } for (s = 0; s < cmcf->servers.nelts; s++) { /* merge the server{}s' srv_conf's */ cf->ctx = cscfp[s]->ctx; if (module->merge_srv_conf) { rv = module->merge_srv_conf(cf, ctx->srv_conf[mi], cscfp[s]->ctx->srv_conf[mi]); if (rv != NGX_CONF_OK) { *cf = pcf; return rv; } } } } *cf = pcf; if (ngx_array_init(&ports, cf->temp_pool, 4, sizeof(ngx_mail_conf_port_t)) != NGX_OK) { return NGX_CONF_ERROR; } listen = cmcf->listen.elts; for (i = 0; i < cmcf->listen.nelts; i++) { if (ngx_mail_add_ports(cf, &ports, &listen[i]) != NGX_OK) { return NGX_CONF_ERROR; } } return ngx_mail_optimize_servers(cf, &ports); } static ngx_int_t ngx_mail_add_ports(ngx_conf_t *cf, ngx_array_t *ports, ngx_mail_listen_t *listen) { in_port_t p; ngx_uint_t i; struct sockaddr *sa; struct sockaddr_in *sin; ngx_mail_conf_port_t *port; ngx_mail_conf_addr_t *addr; #if (NGX_HAVE_INET6) struct sockaddr_in6 *sin6; #endif sa = &listen->u.sockaddr; switch (sa->sa_family) { #if (NGX_HAVE_INET6) case AF_INET6: sin6 = &listen->u.sockaddr_in6; p = sin6->sin6_port; break; #endif #if (NGX_HAVE_UNIX_DOMAIN) case AF_UNIX: p = 0; break; #endif default: /* AF_INET */ sin = &listen->u.sockaddr_in; p = sin->sin_port; break; } port = ports->elts; for (i = 0; i < ports->nelts; i++) { if (p == port[i].port && sa->sa_family == port[i].family) { /* a port is already in the port list */ port = &port[i]; goto found; } } /* add a port to the port list */ port = ngx_array_push(ports); if (port == NULL) { return NGX_ERROR; } port->family = sa->sa_family; port->port = p; if (ngx_array_init(&port->addrs, cf->temp_pool, 2, sizeof(ngx_mail_conf_addr_t)) != NGX_OK) { return NGX_ERROR; } found: addr = ngx_array_push(&port->addrs); if (addr == NULL) { return NGX_ERROR; } addr->opt = *listen; return NGX_OK; } static char * ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports) { ngx_uint_t i, p, last, bind_wildcard; ngx_listening_t *ls; ngx_mail_port_t *mport; ngx_mail_conf_port_t *port; ngx_mail_conf_addr_t *addr; ngx_mail_core_srv_conf_t *cscf; port = ports->elts; for (p = 0; p < ports->nelts; p++) { ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts, sizeof(ngx_mail_conf_addr_t), ngx_mail_cmp_conf_addrs); addr = port[p].addrs.elts; last = port[p].addrs.nelts; /* * if there is the binding to the "*:port" then we need to bind() * to the "*:port" only and ignore the other bindings */ if (addr[last - 1].opt.wildcard) { addr[last - 1].opt.bind = 1; bind_wildcard = 1; } else { bind_wildcard = 0; } i = 0; while (i < last) { if (bind_wildcard && !addr[i].opt.bind) { i++; continue; } ls = ngx_create_listening(cf, &addr[i].opt.u.sockaddr, addr[i].opt.socklen); if (ls == NULL) { return NGX_CONF_ERROR; } ls->addr_ntop = 1; ls->handler = ngx_mail_init_connection; ls->pool_size = 256; cscf = addr->opt.ctx->srv_conf[ngx_mail_core_module.ctx_index]; ls->logp = cscf->error_log; ls->log.data = &ls->addr_text; ls->log.handler = ngx_accept_log_error; ls->backlog = addr[i].opt.backlog; ls->keepalive = addr[i].opt.so_keepalive; #if (NGX_HAVE_KEEPALIVE_TUNABLE) ls->keepidle = addr[i].opt.tcp_keepidle; ls->keepintvl = addr[i].opt.tcp_keepintvl; ls->keepcnt = addr[i].opt.tcp_keepcnt; #endif #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) ls->ipv6only = addr[i].opt.ipv6only; #endif mport = ngx_palloc(cf->pool, sizeof(ngx_mail_port_t)); if (mport == NULL) { return NGX_CONF_ERROR; } ls->servers = mport; mport->naddrs = i + 1; switch (ls->sockaddr->sa_family) { #if (NGX_HAVE_INET6) case AF_INET6: if (ngx_mail_add_addrs6(cf, mport, addr) != NGX_OK) { return NGX_CONF_ERROR; } break; #endif default: /* AF_INET */ if (ngx_mail_add_addrs(cf, mport, addr) != NGX_OK) { return NGX_CONF_ERROR; } break; } addr++; last--; } } return NGX_CONF_OK; } static ngx_int_t ngx_mail_add_addrs(ngx_conf_t *cf, ngx_mail_port_t *mport, ngx_mail_conf_addr_t *addr) { u_char *p; size_t len; ngx_uint_t i; ngx_mail_in_addr_t *addrs; struct sockaddr_in *sin; u_char buf[NGX_SOCKADDR_STRLEN]; mport->addrs = ngx_pcalloc(cf->pool, mport->naddrs * sizeof(ngx_mail_in_addr_t)); if (mport->addrs == NULL) { return NGX_ERROR; } addrs = mport->addrs; for (i = 0; i < mport->naddrs; i++) { sin = &addr[i].opt.u.sockaddr_in; addrs[i].addr = sin->sin_addr.s_addr; addrs[i].conf.ctx = addr[i].opt.ctx; #if (NGX_MAIL_SSL) addrs[i].conf.ssl = addr[i].opt.ssl; #endif len = ngx_sock_ntop(&addr[i].opt.u.sockaddr, addr[i].opt.socklen, buf, NGX_SOCKADDR_STRLEN, 1); p = ngx_pnalloc(cf->pool, len); if (p == NULL) { return NGX_ERROR; } ngx_memcpy(p, buf, len); addrs[i].conf.addr_text.len = len; addrs[i].conf.addr_text.data = p; } return NGX_OK; } #if (NGX_HAVE_INET6) static ngx_int_t ngx_mail_add_addrs6(ngx_conf_t *cf, ngx_mail_port_t *mport, ngx_mail_conf_addr_t *addr) { u_char *p; size_t len; ngx_uint_t i; ngx_mail_in6_addr_t *addrs6; struct sockaddr_in6 *sin6; u_char buf[NGX_SOCKADDR_STRLEN]; mport->addrs = ngx_pcalloc(cf->pool, mport->naddrs * sizeof(ngx_mail_in6_addr_t)); if (mport->addrs == NULL) { return NGX_ERROR; } addrs6 = mport->addrs; for (i = 0; i < mport->naddrs; i++) { sin6 = &addr[i].opt.u.sockaddr_in6; addrs6[i].addr6 = sin6->sin6_addr; addrs6[i].conf.ctx = addr[i].opt.ctx; #if (NGX_MAIL_SSL) addrs6[i].conf.ssl = addr[i].opt.ssl; #endif len = ngx_sock_ntop(&addr[i].opt.u.sockaddr, addr[i].opt.socklen, buf, NGX_SOCKADDR_STRLEN, 1); p = ngx_pnalloc(cf->pool, len); if (p == NULL) { return NGX_ERROR; } ngx_memcpy(p, buf, len); addrs6[i].conf.addr_text.len = len; addrs6[i].conf.addr_text.data = p; } return NGX_OK; } #endif static ngx_int_t ngx_mail_cmp_conf_addrs(const void *one, const void *two) { ngx_mail_conf_addr_t *first, *second; first = (ngx_mail_conf_addr_t *) one; second = (ngx_mail_conf_addr_t *) two; if (first->opt.wildcard) { /* a wildcard must be the last resort, shift it to the end */ return 1; } if (second->opt.wildcard) { /* a wildcard must be the last resort, shift it to the end */ return -1; } if (first->opt.bind && !second->opt.bind) { /* shift explicit bind()ed addresses to the start */ return -1; } if (!first->opt.bind && second->opt.bind) { /* shift explicit bind()ed addresses to the start */ return 1; } /* do not sort by default */ return 0; }