/* GNU Mailutils -- a suite of utilities for electronic mail Copyright (C) 1999, 2001, 2005, 2007-2012, 2014-2016 Free Software Foundation, Inc. GNU Mailutils is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GNU Mailutils is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */ #include "imap4d.h" typedef int (*nsfp_t) (void *closure, int ns, char *path, int delim); mu_list_t namespace[NS_MAX]; static const char * printable_pathname (const char *str) { if (strncmp (str, imap4d_homedir, strlen (imap4d_homedir)) == 0) { str += strlen (imap4d_homedir); if (str[0] == '/') str++; } return str; } static int print_namespace_fun (void *item, void *data) { int *pcount = data; const char *dir = printable_pathname (item); char *suf = (dir[0] && dir[strlen (dir) - 1] != '/') ? "/" : ""; if ((*pcount)++) io_sendf (" "); io_sendf ("(\"%s%s\" \"/\")", dir, suf); return 0; } static void print_namespace (int nsid) { mu_list_t list = namespace[nsid]; if (!list) io_sendf ("NIL"); else { int count; count = 0; io_sendf ("("); mu_list_foreach (list, print_namespace_fun, &count); io_sendf (")"); } } struct ns_closure { int id; nsfp_t fun; void *closure; }; static int _enum_fun (void *item, void *data) { struct ns_closure *nsp = data; return nsp->fun (nsp->closure, nsp->id, (char*) item, '/'); } static int namespace_enumerate (int id, nsfp_t f, void *closure) { struct ns_closure nsc; nsc.id = id; nsc.fun = f; nsc.closure = closure; return namespace[id] == 0 ? 0 : mu_list_foreach (namespace[id], _enum_fun, &nsc); } static int namespace_enumerate_all (nsfp_t f, void *closure) { return namespace_enumerate (NS_PRIVATE, f, closure) || namespace_enumerate (NS_OTHER, f, closure) || namespace_enumerate (NS_SHARED, f, closure); } /* 5. NAMESPACE Command Arguments: none Response: an untagged NAMESPACE response that contains the prefix and hierarchy delimiter to the server's Personal Namespace(s), Other Users' Namespace(s), and Shared Namespace(s) that the server wishes to expose. The response will contain a NIL for any namespace class that is not available. Namespace_Response_Extensions MAY be included in the response. Namespace_Response_Extensions which are not on the IETF standards track, MUST be prefixed with an "X-". */ int imap4d_namespace (struct imap4d_session *session, struct imap4d_command *command, imap4d_tokbuf_t tok) { if (imap4d_tokbuf_argc (tok) != 2) return io_completion_response (command, RESP_BAD, "Invalid arguments"); io_sendf ("* NAMESPACE "); print_namespace (NS_PRIVATE); io_sendf (" "); print_namespace (NS_OTHER); io_sendf (" "); print_namespace (NS_SHARED); io_sendf ("\n"); return io_completion_response (command, RESP_OK, "Completed"); } struct namespace_info { char *name; int namelen; int ns; int exact; }; static int check_namespace (void *closure, int ns, char *path, int delim) { struct namespace_info *p = (struct namespace_info *) closure; int len = strlen (path); if ((len == 0 && p->namelen == len) || (len > 0 && strncmp (path, p->name, strlen (path)) == 0)) { p->ns = ns; p->exact = len == p->namelen; return 1; } return 0; } static int risky_pattern (const char *pattern, int delim) { for (; *pattern && *pattern != delim; pattern++) { if (*pattern == '%' || *pattern == '*') return 1; } return 0; } char * namespace_checkfullpath (const char *name, const char *pattern, int *nspace) { struct namespace_info info; const char *p; char *path = NULL; char *scheme = NULL; p = strchr (name, ':'); if (p) { size_t size = p - name + 1; scheme = malloc (size + 1); if (!scheme) return NULL; memcpy (scheme, name, size); scheme[size] = 0; name = p + 1; } path = util_getfullpath (name); if (!path) { free (scheme); return path; } info.name = path; info.namelen = strlen (path); if (!namespace_enumerate_all (check_namespace, &info)) { free (scheme); free (path); return NULL; } if (pattern && info.ns == NS_OTHER && info.exact && risky_pattern (pattern, '/')) { free (scheme); free (path); return NULL; } if (nspace) *nspace = info.ns; if (scheme) { char *pathstr = malloc (strlen (scheme) + strlen (path) + 2); if (pathstr) { strcpy (pathstr, scheme); strcat (pathstr, path); } free (scheme); free (path); path = pathstr; } return path; } char * namespace_getfullpath (const char *name, int *nspace) { char *ret; if (mu_c_strcasecmp (name, "INBOX") == 0 && auth_data->change_uid) { ret = mu_strdup (auth_data->mailbox); if (nspace) *nspace = NS_PRIVATE; } else ret = namespace_checkfullpath (name, NULL, nspace); return ret; } int namespace_init_session (char *path) { if (!namespace[NS_PRIVATE]) mu_list_create (&namespace[NS_PRIVATE]); mu_list_prepend (namespace[NS_PRIVATE], mu_strdup (mu_normalize_path (path))); return 0; } static int normalize_fun (void *item, void *data) { char *name = item; mu_list_t list = data; return mu_list_append (list, mu_strdup (mu_normalize_path (name))); } void namespace_init () { int i; for (i = 0; i < NS_MAX; i++) { if (namespace[i]) { mu_list_t list; mu_list_create (&list); mu_list_set_destroy_item (list, mu_list_free_item); mu_list_foreach (namespace[i], normalize_fun, list); mu_list_set_destroy_item (namespace[i], mu_list_free_item); mu_list_destroy (&namespace[i]); namespace[i] = list; } } }