Mercurial > hg > nginx
view src/mail/ngx_mail.c @ 8794:ba5977b38b2e quic
HTTP/3: reordered H3_MISSING_SETTINGS and H3_FRAME_UNEXPECTED.
The quic-http-34 is ambiguous as to what error should be generated for the
first frame in control stream:
Each side MUST initiate a single control stream at the beginning of
the connection and send its SETTINGS frame as the first frame on this
stream. If the first frame of the control stream is any other frame
type, this MUST be treated as a connection error of type
H3_MISSING_SETTINGS.
If a DATA frame is received on a control stream, the recipient MUST
respond with a connection error of type H3_FRAME_UNEXPECTED.
If a HEADERS frame is received on a control stream, the recipient MUST
respond with a connection error of type H3_FRAME_UNEXPECTED.
Previously, H3_FRAME_UNEXPECTED had priority, but now H3_MISSING_SETTINGS has.
The arguments in the spec sound more compelling for H3_MISSING_SETTINGS.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Fri, 11 Jun 2021 10:56:51 +0300 |
parents | 12ea1de7d87c |
children |
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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; ngx_mail_conf_port_t *port; ngx_mail_conf_addr_t *addr; sa = listen->sockaddr; p = ngx_inet_get_port(sa); 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.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->rcvbuf = addr[i].opt.rcvbuf; ls->sndbuf = addr[i].opt.sndbuf; 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) 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) { ngx_uint_t i; ngx_mail_in_addr_t *addrs; struct sockaddr_in *sin; 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 = (struct sockaddr_in *) addr[i].opt.sockaddr; 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 addrs[i].conf.proxy_protocol = addr[i].opt.proxy_protocol; addrs[i].conf.addr_text = addr[i].opt.addr_text; } 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) { ngx_uint_t i; ngx_mail_in6_addr_t *addrs6; struct sockaddr_in6 *sin6; 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 = (struct sockaddr_in6 *) addr[i].opt.sockaddr; 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 addrs6[i].conf.proxy_protocol = addr[i].opt.proxy_protocol; addrs6[i].conf.addr_text = addr[i].opt.addr_text; } 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; }