Mercurial > hg > nginx
view src/mail/ngx_mail_smtp_module.c @ 8542:d3489d225f8f quic
QUIC: update packet length for short packets too.
During long packet header parsing, pkt->len is updated with the Length
field value that is used to find next coalesced packets in a datagram.
For short packets it still contained the whole QUIC packet size.
This change uniforms packet length handling to always contain the total
length of the packet number and protected packet payload in pkt->len.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Tue, 08 Sep 2020 13:27:39 +0300 |
parents | f18c285c2e59 |
children | dc955d274130 |
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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> #include <ngx_mail_smtp_module.h> static void *ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf); static char *ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child); static ngx_conf_bitmask_t ngx_mail_smtp_auth_methods[] = { { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, { ngx_string("login"), NGX_MAIL_AUTH_LOGIN_ENABLED }, { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, { ngx_string("external"), NGX_MAIL_AUTH_EXTERNAL_ENABLED }, { ngx_string("none"), NGX_MAIL_AUTH_NONE_ENABLED }, { ngx_null_string, 0 } }; static ngx_str_t ngx_mail_smtp_auth_methods_names[] = { ngx_string("PLAIN"), ngx_string("LOGIN"), ngx_null_string, /* APOP */ ngx_string("CRAM-MD5"), ngx_string("EXTERNAL"), ngx_null_string /* NONE */ }; static ngx_mail_protocol_t ngx_mail_smtp_protocol = { ngx_string("smtp"), { 25, 465, 587, 0 }, NGX_MAIL_SMTP_PROTOCOL, ngx_mail_smtp_init_session, ngx_mail_smtp_init_protocol, ngx_mail_smtp_parse_command, ngx_mail_smtp_auth_state, ngx_string("451 4.3.2 Internal server error" CRLF), ngx_string("421 4.7.1 SSL certificate error" CRLF), ngx_string("421 4.7.1 No required SSL certificate" CRLF) }; static ngx_command_t ngx_mail_smtp_commands[] = { { ngx_string("smtp_client_buffer"), NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_MAIL_SRV_CONF_OFFSET, offsetof(ngx_mail_smtp_srv_conf_t, client_buffer_size), NULL }, { ngx_string("smtp_greeting_delay"), NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_msec_slot, NGX_MAIL_SRV_CONF_OFFSET, offsetof(ngx_mail_smtp_srv_conf_t, greeting_delay), NULL }, { ngx_string("smtp_capabilities"), NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, ngx_mail_capabilities, NGX_MAIL_SRV_CONF_OFFSET, offsetof(ngx_mail_smtp_srv_conf_t, capabilities), NULL }, { ngx_string("smtp_auth"), NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, ngx_conf_set_bitmask_slot, NGX_MAIL_SRV_CONF_OFFSET, offsetof(ngx_mail_smtp_srv_conf_t, auth_methods), &ngx_mail_smtp_auth_methods }, ngx_null_command }; static ngx_mail_module_t ngx_mail_smtp_module_ctx = { &ngx_mail_smtp_protocol, /* protocol */ NULL, /* create main configuration */ NULL, /* init main configuration */ ngx_mail_smtp_create_srv_conf, /* create server configuration */ ngx_mail_smtp_merge_srv_conf /* merge server configuration */ }; ngx_module_t ngx_mail_smtp_module = { NGX_MODULE_V1, &ngx_mail_smtp_module_ctx, /* module context */ ngx_mail_smtp_commands, /* module directives */ NGX_MAIL_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 void * ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf) { ngx_mail_smtp_srv_conf_t *sscf; sscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_smtp_srv_conf_t)); if (sscf == NULL) { return NULL; } sscf->client_buffer_size = NGX_CONF_UNSET_SIZE; sscf->greeting_delay = NGX_CONF_UNSET_MSEC; if (ngx_array_init(&sscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) != NGX_OK) { return NULL; } return sscf; } static char * ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_mail_smtp_srv_conf_t *prev = parent; ngx_mail_smtp_srv_conf_t *conf = child; u_char *p, *auth, *last; size_t size; ngx_str_t *c; ngx_uint_t i, m, auth_enabled; ngx_mail_core_srv_conf_t *cscf; ngx_conf_merge_size_value(conf->client_buffer_size, prev->client_buffer_size, (size_t) ngx_pagesize); ngx_conf_merge_msec_value(conf->greeting_delay, prev->greeting_delay, 0); ngx_conf_merge_bitmask_value(conf->auth_methods, prev->auth_methods, (NGX_CONF_BITMASK_SET |NGX_MAIL_AUTH_PLAIN_ENABLED |NGX_MAIL_AUTH_LOGIN_ENABLED)); cscf = ngx_mail_conf_get_module_srv_conf(cf, ngx_mail_core_module); size = sizeof("220 ESMTP ready" CRLF) - 1 + cscf->server_name.len; p = ngx_pnalloc(cf->pool, size); if (p == NULL) { return NGX_CONF_ERROR; } conf->greeting.len = size; conf->greeting.data = p; *p++ = '2'; *p++ = '2'; *p++ = '0'; *p++ = ' '; p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); ngx_memcpy(p, " ESMTP ready" CRLF, sizeof(" ESMTP ready" CRLF) - 1); size = sizeof("250 " CRLF) - 1 + cscf->server_name.len; p = ngx_pnalloc(cf->pool, size); if (p == NULL) { return NGX_CONF_ERROR; } conf->server_name.len = size; conf->server_name.data = p; *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); *p++ = CR; *p = LF; if (conf->capabilities.nelts == 0) { conf->capabilities = prev->capabilities; } size = sizeof("250-") - 1 + cscf->server_name.len + sizeof(CRLF) - 1; c = conf->capabilities.elts; for (i = 0; i < conf->capabilities.nelts; i++) { size += sizeof("250 ") - 1 + c[i].len + sizeof(CRLF) - 1; } auth_enabled = 0; for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; m <= NGX_MAIL_AUTH_EXTERNAL_ENABLED; m <<= 1, i++) { if (m & conf->auth_methods) { size += 1 + ngx_mail_smtp_auth_methods_names[i].len; auth_enabled = 1; } } if (auth_enabled) { size += sizeof("250 AUTH") - 1 + sizeof(CRLF) - 1; } p = ngx_pnalloc(cf->pool, size); if (p == NULL) { return NGX_CONF_ERROR; } conf->capability.len = size; conf->capability.data = p; last = p; *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); *p++ = CR; *p++ = LF; for (i = 0; i < conf->capabilities.nelts; i++) { last = p; *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; p = ngx_cpymem(p, c[i].data, c[i].len); *p++ = CR; *p++ = LF; } auth = p; if (auth_enabled) { last = p; *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; *p++ = 'A'; *p++ = 'U'; *p++ = 'T'; *p++ = 'H'; for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; m <= NGX_MAIL_AUTH_EXTERNAL_ENABLED; m <<= 1, i++) { if (m & conf->auth_methods) { *p++ = ' '; p = ngx_cpymem(p, ngx_mail_smtp_auth_methods_names[i].data, ngx_mail_smtp_auth_methods_names[i].len); } } *p++ = CR; *p = LF; } else { last[3] = ' '; } size += sizeof("250 STARTTLS" CRLF) - 1; p = ngx_pnalloc(cf->pool, size); if (p == NULL) { return NGX_CONF_ERROR; } conf->starttls_capability.len = size; conf->starttls_capability.data = p; p = ngx_cpymem(p, conf->capability.data, conf->capability.len); ngx_memcpy(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); p = conf->starttls_capability.data + (last - conf->capability.data) + 3; *p = '-'; size = (auth - conf->capability.data) + sizeof("250 STARTTLS" CRLF) - 1; p = ngx_pnalloc(cf->pool, size); if (p == NULL) { return NGX_CONF_ERROR; } conf->starttls_only_capability.len = size; conf->starttls_only_capability.data = p; p = ngx_cpymem(p, conf->capability.data, auth - conf->capability.data); ngx_memcpy(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); if (last < auth) { p = conf->starttls_only_capability.data + (last - conf->capability.data) + 3; *p = '-'; } return NGX_CONF_OK; }