src/lib-storage/mail-namespace.c

	mail-namespace.c revision eae6e66545ee1847d5977a6dbebc31df84563e0c
2e37d45867d081db150ab78dad303b9077aea24fTimo Sirainen/* Copyright (c) 2005-2009 Dovecot authors, see the included COPYING file */
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen#include "lib.h"
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen#include "array.h"
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen#include "str.h"
0536ccb51d41e3078c3a9fa33e509fb4b2420f95Timo Sirainen#include "file-lock.h"
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen#include "mail-storage-private.h"
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen#include "mail-storage-settings.h"
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen#include "mail-namespace.h"
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen#include <stdlib.h>
252db51b6c0a605163326b3ea5d09e9936ca3b29Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainenvoid (*hook_mail_namespaces_created)(struct mail_namespace *namespaces);
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainenvoid mail_namespace_add_storage(struct mail_namespace *ns,
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                struct mail_storage *storage)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen{
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen    /* currently we support only a single storage */
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    i_assert(ns->storage == NULL);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    ns->storage = storage;
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (storage->v.add_list != NULL)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        storage->v.add_list(storage, ns->list);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen}
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainenvoid mail_namespace_finish_list_init(struct mail_namespace *ns,
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen                     struct mailbox_list *list)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen{
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen    ns->list = list;
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen    /* allow plugins to override real_sep */
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen    if (ns->real_sep == '\0')
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen        ns->real_sep = mailbox_list_get_hierarchy_sep(list);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    ns->prefix_len = strlen(ns->prefix);
2c25e1360d4b5cc55eda969a3a7204d950de5a8fTimo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (ns->set->separator != NULL)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->sep = *ns->set->separator;
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen    if (ns->sep == '\0')
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                ns->sep = ns->real_sep;
252db51b6c0a605163326b3ea5d09e9936ca3b29Timo Sirainen    if (ns->sep == '"' || ns->sep == '\\') {
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->sep_str[0] = '\\';
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->sep_str[1] = ns->sep;
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen    } else {
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen        ns->sep_str[0] = ns->sep;
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen    }
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen}
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainenstatic void mail_namespace_free(struct mail_namespace *ns)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen{
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (ns->storage != NULL)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        mail_storage_unref(&ns->storage);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (ns->list != NULL)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        mailbox_list_destroy(&ns->list);
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (ns->owner != ns->user && ns->owner != NULL)
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen        mail_user_unref(&ns->owner);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    i_free(ns->prefix);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    i_free(ns);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen}
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
252db51b6c0a605163326b3ea5d09e9936ca3b29Timo Sirainenstatic int
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainennamespace_add(struct mail_user *user,
7ef5ca6fb59a318c821a852ae48a2edbb671d7ddTimo Sirainen          struct mail_namespace_settings *ns_set,
7ef5ca6fb59a318c821a852ae48a2edbb671d7ddTimo Sirainen          const struct mail_storage_settings *mail_set,
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen          struct mail_namespace **ns_p, const char **error_r)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen{
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen        struct mail_namespace *ns;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    const char *driver, *error;
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen    ns = i_new(struct mail_namespace, 1);
af81f402ddc897c74c1e85abd02879612ce44882Timo Sirainen    ns->user = user;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (strncmp(ns_set->type, "private", 7) == 0) {
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->owner = user;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->type = NAMESPACE_PRIVATE;
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen    } else if (strncmp(ns_set->type, "shared", 6) == 0)
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen        ns->type = NAMESPACE_SHARED;
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen    else if (strncmp(ns_set->type, "public", 6) == 0)
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen        ns->type = NAMESPACE_PUBLIC;
9e095dd6a77097356aca8216356d4d71ef1bea45Timo Sirainen    else {
9e095dd6a77097356aca8216356d4d71ef1bea45Timo Sirainen        *error_r = t_strdup_printf("Unknown namespace type: %s",
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen                       ns_set->type);
9e095dd6a77097356aca8216356d4d71ef1bea45Timo Sirainen        mail_namespace_free(ns);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        return -1;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    }
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (strcmp(ns_set->list, "children") == 0)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->flags |= NAMESPACE_FLAG_LIST_CHILDREN;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    else if (strcmp(ns_set->list, "yes") == 0)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->flags |= NAMESPACE_FLAG_LIST_PREFIX;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    else if (strcmp(ns_set->list, "no") != 0) {
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        *error_r = t_strdup_printf("Invalid list setting value: %s",
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                       ns_set->list);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        mail_namespace_free(ns);
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen        return -1;
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen    }
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen    if (ns_set->inbox)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->flags |= NAMESPACE_FLAG_INBOX;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (ns_set->hidden)
b3142c8e513bc78da821fa70f479016148fa95e5Timo Sirainen        ns->flags |= NAMESPACE_FLAG_HIDDEN;
7ef5ca6fb59a318c821a852ae48a2edbb671d7ddTimo Sirainen    if (ns_set->subscriptions)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->flags |= NAMESPACE_FLAG_SUBSCRIPTIONS;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
b3142c8e513bc78da821fa70f479016148fa95e5Timo Sirainen    if (mail_set->mail_debug) {
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        i_info("Namespace: type=%s, prefix=%s, sep=%s, "
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen               "inbox=%s, hidden=%s, list=%s, subscriptions=%s",
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen               ns_set->type, ns_set->prefix,
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen               ns_set->separator == NULL ? "" : ns_set->separator,
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen               ns_set->inbox ? "yes" : "no",
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen               ns_set->hidden ? "yes" : "no",
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen               ns_set->list ? "yes" : "no",
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen               ns_set->subscriptions ? "yes" : "no");
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen    }
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen
c09f9f95db314e7482c95e502e1c56ed6c555797Timo Sirainen    if (*ns_set->location == '\0')
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen        ns_set->location = mail_set->mail_location;
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen    ns->set = ns_set;
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen    ns->mail_set = mail_set;
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen    ns->prefix = i_strdup(ns_set->prefix);
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen    if (ns->type == NAMESPACE_SHARED && strchr(ns->prefix, '%') != NULL) {
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen        /* dynamic shared namespace */
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen        ns->flags |= NAMESPACE_FLAG_NOQUOTA | NAMESPACE_FLAG_NOACL;
67c24901ac5e1521e38a91efc452faeb3e2135a1Timo Sirainen        driver = "shared";
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    } else {
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        driver = NULL;
e11a64ffc7f08b4cb05bcc27668d154d33d0c2e0Timo Sirainen    }
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen    if (mail_storage_create(ns, driver, 0, &error) < 0) {
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen        *error_r = t_strdup_printf("Namespace '%s': %s",
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen                       ns->prefix, error);
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen        mail_namespace_free(ns);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        return -1;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    }
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen
c09f9f95db314e7482c95e502e1c56ed6c555797Timo Sirainen    *ns_p = ns;
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen    return 0;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen}
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainenstatic int
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainennamespace_set_alias_for(struct mail_namespace *ns,
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen            struct mail_namespace *all_namespaces,
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen            const char **error_r)
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen{
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (ns->set->alias_for != NULL) {
b3142c8e513bc78da821fa70f479016148fa95e5Timo Sirainen        ns->alias_for = mail_namespace_find_prefix(all_namespaces,
b3142c8e513bc78da821fa70f479016148fa95e5Timo Sirainen                               ns->set->alias_for);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        if (ns->alias_for == NULL) {
b3142c8e513bc78da821fa70f479016148fa95e5Timo Sirainen            *error_r = t_strdup_printf("Invalid namespace alias_for: %s",
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                           ns->set->alias_for);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen            return -1;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        }
b3142c8e513bc78da821fa70f479016148fa95e5Timo Sirainen        if (ns->alias_for->alias_for != NULL) {
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen            *error_r = t_strdup_printf("Chained namespace alias_for: %s",
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                           ns->set->alias_for);
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen            return -1;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        }
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        ns->alias_chain_next = ns->alias_for->alias_chain_next;
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen        ns->alias_for->alias_chain_next = ns;
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen    }
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen    return 0;
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen}
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainenstatic bool
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainennamespaces_check(struct mail_namespace *namespaces, const char **error_r)
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen{
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen    struct mail_namespace *ns, *inbox_ns = NULL;
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen    unsigned int subscriptions_count = 0;
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen    char list_sep = '\0';
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen    for (ns = namespaces; ns != NULL; ns = ns->next) {
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen        if (namespace_set_alias_for(ns, namespaces, error_r) < 0)
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen            return FALSE;
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen        if ((ns->flags & NAMESPACE_FLAG_INBOX) != 0) {
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen            if (inbox_ns != NULL) {
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen                *error_r = "namespace configuration error: "
8cb72c59d5ea4e9e5f638d7ec840bb853f5a188eTimo Sirainen                    "There can be only one namespace with "
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen                    "inbox=yes";
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen                return FALSE;
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen            }
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen            inbox_ns = ns;
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen        }
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen        if (*ns->prefix != '\0' &&
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen            (ns->flags & NAMESPACE_FLAG_LIST_PREFIX) != 0 &&
7d207b1e77a7b5e3fda640e353acfc86d261fedfTimo Sirainen            ns->prefix[strlen(ns->prefix)-1] != ns->sep) {
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen            *error_r = t_strdup_printf(
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                "namespace configuration error: "
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen                "list=yes requires prefix=%s "
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen                "to end with separator", ns->prefix);
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen            return FALSE;
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen        }
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen        if ((ns->flags & (NAMESPACE_FLAG_LIST_PREFIX |
07e4875d250e7a7157cd99132aafc773cf3cdf83Timo Sirainen                  NAMESPACE_FLAG_LIST_CHILDREN)) != 0) {
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen            if (list_sep == '\0')
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                list_sep = ns->sep;
fe363b433b8038a69b55169da9dca27892ad7d18Timo Sirainen            else if (list_sep != ns->sep) {
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen                *error_r = "namespace configuration error: "
6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen                    "All list=yes namespaces must use "
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                    "the same separator";
c0435c854a0e7246373b9752d163095cc4fbe985Timo Sirainen                return FALSE;
03f5c621d06d6b6d77a145196c9633a7aa64dc78Timo Sirainen            }
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        }
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        if ((ns->flags & NAMESPACE_FLAG_SUBSCRIPTIONS) != 0)
e11a64ffc7f08b4cb05bcc27668d154d33d0c2e0Timo Sirainen            subscriptions_count++;
e11a64ffc7f08b4cb05bcc27668d154d33d0c2e0Timo Sirainen    }
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (inbox_ns == NULL) {
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen            *error_r = "namespace configuration error: "
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen                "inbox=yes namespace missing";
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen        return FALSE;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    }
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (list_sep == '\0') {
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        *error_r = "namespace configuration error: "
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen            "no list=yes namespaces";
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen        return FALSE;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    }
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    if (subscriptions_count == 0) {
fe363b433b8038a69b55169da9dca27892ad7d18Timo Sirainen        *error_r = "namespace configuration error: "
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen            "no subscriptions=yes namespaces";
dd62b77c932d1b518f2a3e4bf80e36542becc256Timo Sirainen        return FALSE;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    }
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen    return TRUE;
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen}
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen
7ef5ca6fb59a318c821a852ae48a2edbb671d7ddTimo Sirainenint mail_namespaces_init(struct mail_user *user, const char **error_r)
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen{
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen    const struct mail_storage_settings *mail_set;
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen    struct mail_namespace_settings *const *ns_set;
a94936bafd127680184da114c6a177b37ff656e5Timo Sirainen    struct mail_namespace *namespaces, *ns, **ns_p;
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    struct mail_namespace_settings *inbox_set;
da2aa032ccfa8e7e4a4380ef738014549f4d2c2dTimo Sirainen    const char *error, *driver, *location_source;
9511a40d933181045343110c8101b75887062aaeTimo Sirainen    unsigned int i, count;
9511a40d933181045343110c8101b75887062aaeTimo Sirainen
03f5c621d06d6b6d77a145196c9633a7aa64dc78Timo Sirainen    i_assert(user->initialized);
c06f4017027263cf3a08becc551f5126409e2a83Timo Sirainen
411d6baa37f31d90730e90c4a28c43e1974bbe58Timo Sirainen        namespaces = NULL; ns_p = &namespaces;
03f5c621d06d6b6d77a145196c9633a7aa64dc78Timo Sirainen
ecc81625167ed96c04c02aa190a1ea5baa65b474Timo Sirainen    mail_set = mail_user_set_get_storage_set(user->set);
    if (array_is_created(&user->set->namespaces))
        ns_set = array_get(&user->set->namespaces, &count);
    else {
        ns_set = NULL;
        count = 0;
    }
    for (i = 0; i < count; i++) {
        if (namespace_add(user, ns_set[i], mail_set, ns_p, error_r) < 0)
            return -1;
        ns_p = &(*ns_p)->next;
    }

    if (namespaces != NULL) {
        if (!namespaces_check(namespaces, error_r)) {
            while (namespaces != NULL) {
                ns = namespaces;
                namespaces = ns->next;
                mail_namespace_free(ns);
            }
            return -1;
        }
        mail_user_add_namespace(user, &namespaces);

        if (hook_mail_namespaces_created != NULL) {
            T_BEGIN {
                hook_mail_namespaces_created(namespaces);
            } T_END;
        }
        return 0;
    }

    /* no namespaces defined, create a default one */
    ns = i_new(struct mail_namespace, 1);
    ns->type = NAMESPACE_PRIVATE;
    ns->flags = NAMESPACE_FLAG_INBOX | NAMESPACE_FLAG_LIST_PREFIX |
        NAMESPACE_FLAG_SUBSCRIPTIONS;
    ns->owner = user;

    inbox_set = p_new(user->pool, struct mail_namespace_settings, 1);
    *inbox_set = mail_namespace_default_settings;
    inbox_set->inbox = TRUE;

    driver = NULL;
    if (*mail_set->mail_location != '\0') {
        inbox_set->location = mail_set->mail_location;
        location_source = "mail_location setting";
    } else {
        location_source = "environment MAIL";
        inbox_set->location = getenv("MAIL");
    }
    if (inbox_set->location == NULL) {
        /* support also maildir-specific environment */
        inbox_set->location = getenv("MAILDIR");
        if (inbox_set->location == NULL)
            inbox_set->location = "";
        else {
            driver = "maildir";
            location_source = "environment MAILDIR";
        }
    }

    ns->set = inbox_set;
    ns->mail_set = mail_set;
    ns->prefix = i_strdup(ns->set->prefix);
    ns->user = user;

    if (mail_storage_create(ns, driver, 0, &error) < 0) {
        if (*inbox_set->location != '\0') {
            *error_r = t_strdup_printf(
                "Initializing mail storage from %s "
                "failed: %s", location_source, error);
        } else {
            *error_r = t_strdup_printf("mail_location not set and "
                    "autodetection failed: %s", error);
        }
        mail_namespace_free(ns);
        return -1;
    }
    user->namespaces = ns;

    if (hook_mail_namespaces_created != NULL) {
        T_BEGIN {
            hook_mail_namespaces_created(ns);
        } T_END;
    }
    return 0;
}

struct mail_namespace *mail_namespaces_init_empty(struct mail_user *user)
{
    struct mail_namespace *ns;

    ns = i_new(struct mail_namespace, 1);
    ns->user = user;
    ns->owner = user;
    ns->prefix = i_strdup("");
    ns->flags = NAMESPACE_FLAG_INBOX | NAMESPACE_FLAG_LIST_PREFIX |
        NAMESPACE_FLAG_SUBSCRIPTIONS;
    ns->mail_set = mail_user_set_get_storage_set(user->set);
    user->namespaces = ns;
    return ns;
}

void mail_namespaces_deinit(struct mail_namespace **_namespaces)
{
    struct mail_namespace *ns, *namespaces = *_namespaces;

    *_namespaces = NULL;
    while (namespaces != NULL) {
        ns = namespaces;
        namespaces = namespaces->next;

        mail_namespace_free(ns);
    }
}

void mail_namespaces_set_storage_callbacks(struct mail_namespace *namespaces,
                       struct mail_storage_callbacks *callbacks,
                       void *context)
{
    struct mail_namespace *ns;

    for (ns = namespaces; ns != NULL; ns = ns->next)
        mail_storage_set_callbacks(ns->storage, callbacks, context);
}

void mail_namespace_destroy(struct mail_namespace *ns)
{
    struct mail_namespace **nsp;

    /* remove from user's namespaces list */
    for (nsp = &ns->user->namespaces; *nsp != NULL; nsp = &(*nsp)->next) {
        if (*nsp == ns) {
            *nsp = ns->next;
            break;
        }
    }

    mail_namespace_free(ns);
}

const char *mail_namespace_fix_sep(struct mail_namespace *ns, const char *name)
{
    char *ret, *p;

    if (ns->sep == ns->real_sep)
        return name;
    if (ns->type == NAMESPACE_SHARED &&
        (ns->flags & NAMESPACE_FLAG_AUTOCREATED) == 0) {
        /* shared namespace root. the backend storage's hierarchy
           separator isn't known yet, so do nothing. */
        return name;
    }

    ret = p_strdup(unsafe_data_stack_pool, name);
    for (p = ret; *p != '\0'; p++) {
        if (*p == ns->sep)
            *p = ns->real_sep;
    }
    return ret;
}

const char *mail_namespace_get_storage_name(struct mail_namespace *ns,
                        const char *name)
{
    unsigned int len = strlen(ns->prefix);

    if (len > 0) {
        if (strncmp(ns->prefix, name, len) == 0)
            name += len;
        else {
            i_assert(strcasecmp(name, "INBOX") == 0);
        }
    }
    return mail_namespace_fix_sep(ns, name);
}

const char *mail_namespace_get_vname(struct mail_namespace *ns, string_t *dest,
                     const char *name)
{
    str_truncate(dest, 0);
    if ((ns->flags & NAMESPACE_FLAG_INBOX) == 0 ||
        strcasecmp(name, "INBOX") != 0 ||
        ns->user != ns->owner)
        str_append(dest, ns->prefix);

    for (; *name != '\0'; name++) {
        if (*name == ns->real_sep)
            str_append_c(dest, ns->sep);
        else
            str_append_c(dest, *name);
    }
    return str_c(dest);
}

struct mail_storage *
mail_namespace_get_default_storage(struct mail_namespace *ns)
{
    /* currently we don't support more than one storage per namespace */
    return ns->storage;
}

char mail_namespaces_get_root_sep(const struct mail_namespace *namespaces)
{
    while ((namespaces->flags & NAMESPACE_FLAG_LIST_PREFIX) == 0)
        namespaces = namespaces->next;
    return namespaces->sep;
}

static bool mail_namespace_is_usable_prefix(struct mail_namespace *ns,
                        const char *mailbox, bool inbox)
{
    if (strncmp(ns->prefix, mailbox, ns->prefix_len) == 0) {
        /* true exact prefix match */
        return TRUE;
    }

    if (inbox && strncmp(ns->prefix, "INBOX", 5) == 0 &&
        strncmp(ns->prefix+5, mailbox+5, ns->prefix_len-5) == 0) {
        /* we already checked that mailbox begins with case-insensitive
           INBOX. this namespace also begins with INBOX and the rest
           of the prefix matches too. */
        return TRUE;
    }

    if (strncmp(ns->prefix, mailbox, ns->prefix_len-1) == 0 &&
        mailbox[ns->prefix_len-1] == '\0' &&
        ns->prefix[ns->prefix_len-1] == ns->sep) {
        /* we're trying to access the namespace prefix itself */
        return TRUE;
    }
    return FALSE;
}

static struct mail_namespace *
mail_namespace_find_mask(struct mail_namespace *namespaces,
             const char **mailbox,
             enum namespace_flags flags,
             enum namespace_flags mask)
{
        struct mail_namespace *ns = namespaces;
    const char *box = *mailbox;
    struct mail_namespace *best = NULL;
    unsigned int len, best_len = 0;
    bool inbox;

    inbox = strncasecmp(box, "INBOX", 5) == 0;
    if (inbox && box[5] == '\0') {
        /* find the INBOX namespace */
        *mailbox = "INBOX";
        while (ns != NULL) {
            if ((ns->flags & NAMESPACE_FLAG_INBOX) != 0 &&
                (ns->flags & mask) == flags)
                return ns;
            if (*ns->prefix == '\0')
                best = ns;
            ns = ns->next;
        }
        return best;
    }

    for (; ns != NULL; ns = ns->next) {
        if (ns->prefix_len >= best_len && (ns->flags & mask) == flags &&
            mail_namespace_is_usable_prefix(ns, box, inbox)) {
            best = ns;
            best_len = ns->prefix_len;
        }
    }

    if (best != NULL) {
        if (best_len > 0) {
            len = strlen(*mailbox);
            *mailbox += I_MIN(len, best_len);
        } else if (inbox && (box[5] == best->sep || box[5] == '\0'))
            *mailbox = t_strconcat("INBOX", box+5, NULL);

        *mailbox = mail_namespace_fix_sep(best, *mailbox);
    }
    return best;
}

struct mail_namespace *
mail_namespace_find(struct mail_namespace *namespaces, const char **mailbox)
{
    return mail_namespace_find_mask(namespaces, mailbox, 0, 0);
}

struct mail_namespace *
mail_namespace_find_visible(struct mail_namespace *namespaces,
                const char **mailbox)
{
    return mail_namespace_find_mask(namespaces, mailbox, 0,
                    NAMESPACE_FLAG_HIDDEN);
}

struct mail_namespace *
mail_namespace_find_subscribable(struct mail_namespace *namespaces,
                 const char **mailbox)
{
    return mail_namespace_find_mask(namespaces, mailbox,
                    NAMESPACE_FLAG_SUBSCRIPTIONS,
                    NAMESPACE_FLAG_SUBSCRIPTIONS);
}

struct mail_namespace *
mail_namespace_find_unsubscribable(struct mail_namespace *namespaces,
                   const char **mailbox)
{
    return mail_namespace_find_mask(namespaces, mailbox,
                    0, NAMESPACE_FLAG_SUBSCRIPTIONS);
}

struct mail_namespace *
mail_namespace_find_inbox(struct mail_namespace *namespaces)
{
    while ((namespaces->flags & NAMESPACE_FLAG_INBOX) == 0)
        namespaces = namespaces->next;
    return namespaces;
}

bool mail_namespace_update_name(const struct mail_namespace *ns,
                const char **mailbox)
{
    struct mail_namespace tmp_ns = *ns;

    /* FIXME: a bit kludgy.. */
    tmp_ns.next = NULL;
    return mail_namespace_find_mask(&tmp_ns, mailbox, 0, 0) != NULL;
}

struct mail_namespace *
mail_namespace_find_prefix(struct mail_namespace *namespaces,
               const char *prefix)
{
        struct mail_namespace *ns;
    unsigned int len = strlen(prefix);

    for (ns = namespaces; ns != NULL; ns = ns->next) {
        if (ns->prefix_len == len &&
            strcmp(ns->prefix, prefix) == 0)
            return ns;
    }
    return NULL;
}

struct mail_namespace *
mail_namespace_find_prefix_nosep(struct mail_namespace *namespaces,
                 const char *prefix)
{
        struct mail_namespace *ns;
    unsigned int len = strlen(prefix);

    for (ns = namespaces; ns != NULL; ns = ns->next) {
        if (ns->prefix_len == len + 1 &&
            strncmp(ns->prefix, prefix, len) == 0 &&
            ns->prefix[len] == ns->sep)
            return ns;
    }
    return NULL;
}