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src/mail/ngx_mail_pop3_handler.c  view on Meta::CPAN

ngx_mail_pop3_init_protocol(ngx_event_t *rev)
{
    ngx_connection_t    *c;
    ngx_mail_session_t  *s;

    c = rev->data;

    c->log->action = "in auth state";

    if (rev->timedout) {
        ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
        c->timedout = 1;
        ngx_mail_close_connection(c);
        return;
    }

    s = c->data;

    if (s->buffer == NULL) {
        if (ngx_array_init(&s->args, c->pool, 2, sizeof(ngx_str_t))
            == NGX_ERROR)
        {
            ngx_mail_session_internal_server_error(s);
            return;
        }

        s->buffer = ngx_create_temp_buf(c->pool, 128);
        if (s->buffer == NULL) {
            ngx_mail_session_internal_server_error(s);
            return;
        }
    }

    s->mail_state = ngx_pop3_start;
    c->read->handler = ngx_mail_pop3_auth_state;

    ngx_mail_pop3_auth_state(rev);
}


void
ngx_mail_pop3_auth_state(ngx_event_t *rev)
{
    ngx_int_t            rc;
    ngx_connection_t    *c;
    ngx_mail_session_t  *s;

    c = rev->data;
    s = c->data;

    ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "pop3 auth state");

    if (rev->timedout) {
        ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
        c->timedout = 1;
        ngx_mail_close_connection(c);
        return;
    }

    if (s->out.len) {
        ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "pop3 send handler busy");
        s->blocked = 1;
        return;
    }

    s->blocked = 0;

    rc = ngx_mail_read_command(s, c);

    if (rc == NGX_AGAIN || rc == NGX_ERROR) {
        return;
    }

    ngx_str_set(&s->out, pop3_ok);

    if (rc == NGX_OK) {
        switch (s->mail_state) {

        case ngx_pop3_start:

            switch (s->command) {

            case NGX_POP3_USER:
                rc = ngx_mail_pop3_user(s, c);
                break;

            case NGX_POP3_CAPA:
                rc = ngx_mail_pop3_capa(s, c, 1);
                break;

            case NGX_POP3_APOP:
                rc = ngx_mail_pop3_apop(s, c);
                break;

            case NGX_POP3_AUTH:
                rc = ngx_mail_pop3_auth(s, c);
                break;

            case NGX_POP3_QUIT:
                s->quit = 1;
                break;

            case NGX_POP3_NOOP:
                break;

            case NGX_POP3_STLS:
                rc = ngx_mail_pop3_stls(s, c);
                break;

            default:
                rc = NGX_MAIL_PARSE_INVALID_COMMAND;
                break;
            }

            break;

        case ngx_pop3_user:

            switch (s->command) {

            case NGX_POP3_PASS: