From d96d60d2e0a41a4e01163f7e5d1835e028f94b72 Mon Sep 17 00:00:00 2001 From: Maxim Dounin Date: Wed, 19 May 2021 03:13:18 +0300 Subject: Mail: POP3 pipelining support. The change is mostly the same as the SMTP one (04e43d03e153 and 3f5d0af4e40a), and ensures that nginx is able to properly handle or reject multiple POP3 commands, as required by the PIPELINING capability (RFC 2449). The s->cmd field is not really used and set for consistency. --- src/mail/ngx_mail_pop3_handler.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'src/mail/ngx_mail_pop3_handler.c') diff --git a/src/mail/ngx_mail_pop3_handler.c b/src/mail/ngx_mail_pop3_handler.c index edfd98681..226e7419b 100644 --- a/src/mail/ngx_mail_pop3_handler.c +++ b/src/mail/ngx_mail_pop3_handler.c @@ -262,6 +262,10 @@ ngx_mail_pop3_auth_state(ngx_event_t *rev) } } + if (s->buffer->pos < s->buffer->last) { + s->blocked = 1; + } + switch (rc) { case NGX_DONE: @@ -283,11 +287,14 @@ ngx_mail_pop3_auth_state(ngx_event_t *rev) case NGX_OK: s->args.nelts = 0; - s->buffer->pos = s->buffer->start; - s->buffer->last = s->buffer->start; + + if (s->buffer->pos == s->buffer->last) { + s->buffer->pos = s->buffer->start; + s->buffer->last = s->buffer->start; + } if (s->state) { - s->arg_start = s->buffer->start; + s->arg_start = s->buffer->pos; } if (ngx_handle_read_event(c->read, 0) != NGX_OK) { @@ -400,6 +407,8 @@ ngx_mail_pop3_stls(ngx_mail_session_t *s, ngx_connection_t *c) if (c->ssl == NULL) { sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module); if (sslcf->starttls) { + s->buffer->pos = s->buffer->start; + s->buffer->last = s->buffer->start; c->read->handler = ngx_mail_starttls_handler; return NGX_OK; } -- cgit