src/imap/imap-expunge.c

/* Copyright (c) 2003-2018 Dovecot authors, see the included COPYING file */

#include "imap-common.h"
#include "mail-storage.h"
#include "mail-search-build.h"
#include "imap-expunge.h"

int imap_expunge(struct mailbox *box, struct mail_search_arg *next_search_arg,
         unsigned int *expunged_count)
{
    struct mail_search_context *ctx;
        struct mailbox_transaction_context *t;
    struct mail *mail;
    struct mail_search_args *search_args;
    bool expunges = FALSE;

    if (mailbox_is_readonly(box)) {
        /* silently ignore */
        return 0;
    }

    search_args = mail_search_build_init();
    search_args->args = p_new(search_args->pool, struct mail_search_arg, 1);
    search_args->args->type = SEARCH_FLAGS;
    search_args->args->value.flags = MAIL_DELETED;
    search_args->args->next = next_search_arg;

    /* Refresh the flags so we'll expunge all messages marked as \Deleted
       by any session. */
    t = mailbox_transaction_begin(box, MAILBOX_TRANSACTION_FLAG_REFRESH,
                      "EXPUNGE");
    ctx = mailbox_search_init(t, search_args, NULL, 0, NULL);
    mail_search_args_unref(&search_args);

    while (mailbox_search_next(ctx, &mail)) {
        *expunged_count += 1;
        mail_expunge(mail);
        expunges = TRUE;
    }

    if (mailbox_search_deinit(&ctx) < 0) {
        mailbox_transaction_rollback(&t);
        return -1;
    } else {
        if (mailbox_transaction_commit(&t) < 0)
            return -1;
    }

    return expunges ? 1 : 0;
}