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http_caldav.c
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http_caldav.c
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/* http_caldav.c -- Routines for handling CalDAV collections in httpd
*
* Copyright (c) 1994-2011 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/*
* TODO:
*
* - Make proxying more robust. Currently depends on calendar collections
* residing on same server as user's INBOX. Doesn't handle global/shared
* calendars.
* - Support COPY/MOVE on collections
* - Add more required properties?
* - calendar-query REPORT (handle timezone, timezone-id)
* - free-busy-query REPORT (check ACL and transp on all calendars)
* - sync-collection REPORT - need to handle Depth infinity?
*/
#include <config.h>
#include <syslog.h>
#include <libical/ical.h>
#include <libxml/tree.h>
#include <libxml/uri.h>
#include <sys/types.h>
#include "acl.h"
#include "append.h"
#include "caldav_db.h"
#include "charset.h"
#include "exitcodes.h"
#include "global.h"
#include "hash.h"
#include "httpd.h"
#include "http_caldav.h"
#include "http_caldav_sched.h"
#include "http_dav.h"
#include "http_proxy.h"
#include "index.h"
#include "ical_support.h"
#include "jmap_ical.h"
#include "jcal.h"
#include "xcal.h"
#include "map.h"
#include "mailbox.h"
#include "mboxlist.h"
#include "message.h"
#include "message_guid.h"
#include "proxy.h"
#include "times.h"
#include "spool.h"
#include "strhash.h"
#include "stristr.h"
#include "tok.h"
#include "util.h"
#include "version.h"
#include "webdav_db.h"
#include "xmalloc.h"
#include "xml_support.h"
#include "xstrlcat.h"
#include "xstrlcpy.h"
#include "xstrnchr.h"
#include "zoneinfo_db.h"
/* generated headers are not necessarily in current directory */
#include "imap/http_err.h"
#include "imap/imap_err.h"
#define TZ_STRIP (1<<9)
#ifdef HAVE_RSCALE
#include <unicode/uversion.h>
static int rscale_cmp(const void *a, const void *b)
{
/* Convert to uppercase since that's what we prefer to output */
return strcmp(ucase(*((char **) a)), ucase(*((char **) b)));
}
#endif /* HAVE_RSCALE */
static struct caldav_db *auth_caldavdb = NULL;
static time_t compile_time;
static struct buf ical_prodid_buf = BUF_INITIALIZER;
unsigned config_allowsched = IMAP_ENUM_CALDAV_ALLOWSCHEDULING_OFF;
const char *ical_prodid = NULL;
icaltimezone *utc_zone = NULL;
struct strlist *cua_domains = NULL;
icalarray *rscale_calendars = NULL;
struct partial_comp_t {
icalcomponent_kind kind;
arrayu64_t props;
struct partial_comp_t *sibling;
struct partial_comp_t *child;
};
static struct partial_caldata_t {
unsigned expand : 1;
struct icalperiodtype range;
struct partial_comp_t *comp;
} partial_caldata;
static int meth_options_cal(struct transaction_t *txn, void *params);
static int meth_get_head_cal(struct transaction_t *txn, void *params);
static int meth_get_head_fb(struct transaction_t *txn, void *params);
static void my_caldav_init(struct buf *serverinfo);
static void my_caldav_auth(const char *userid);
static void my_caldav_reset(void);
static void my_caldav_shutdown(void);
static int caldav_parse_path(const char *path,
struct request_target_t *tgt, const char **errstr);
static int caldav_check_precond(struct transaction_t *txn,
struct meth_params *params,
struct mailbox *mailbox, const void *data,
const char *etag, time_t lastmod);
static int caldav_acl(struct transaction_t *txn, xmlNodePtr priv, int *rights);
static int caldav_copy(struct transaction_t *txn, void *obj,
struct mailbox *dest_mbox, const char *dest_rsrc,
void *destdb, unsigned flags);
static int caldav_delete_cal(struct transaction_t *txn,
struct mailbox *mailbox,
struct index_record *record, void *data);
static int caldav_get(struct transaction_t *txn, struct mailbox *mailbox,
struct index_record *record, void *data, void **obj);
static int caldav_post(struct transaction_t *txn);
static int caldav_patch(struct transaction_t *txn, void *obj);
static int caldav_put(struct transaction_t *txn, void *obj,
struct mailbox *mailbox, const char *resource,
void *destdb, unsigned flags);
static int caldav_import(struct transaction_t *txn, void *obj,
struct mailbox *mailbox, void *destdb,
xmlNodePtr root, xmlNsPtr *ns, unsigned flags);
static int propfind_getcontenttype(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_restype(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_scheduser(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_caldata(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_calcompset(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int proppatch_calcompset(xmlNodePtr prop, unsigned set,
struct proppatch_ctx *pctx,
struct propstat propstat[], void *rock);
static int propfind_suppcaldata(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_maxsize(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_minmaxdate(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_scheddefault(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_schedtag(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_caltransp(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int proppatch_caltransp(xmlNodePtr prop, unsigned set,
struct proppatch_ctx *pctx,
struct propstat propstat[], void *rock);
static int propfind_timezone(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int proppatch_timezone(xmlNodePtr prop, unsigned set,
struct proppatch_ctx *pctx,
struct propstat propstat[], void *rock);
static int propfind_availability(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int proppatch_availability(xmlNodePtr prop, unsigned set,
struct proppatch_ctx *pctx,
struct propstat propstat[], void *rock);
static int propfind_tzservset(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_tzid(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int proppatch_tzid(xmlNodePtr prop, unsigned set,
struct proppatch_ctx *pctx,
struct propstat propstat[], void *rock);
static int propfind_rscaleset(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static int propfind_sharingmodes(const xmlChar *name, xmlNsPtr ns,
struct propfind_ctx *fctx,
xmlNodePtr prop, xmlNodePtr resp,
struct propstat propstat[], void *rock);
static void strip_vtimezones(icalcomponent *ical);
static int report_cal_query(struct transaction_t *txn,
struct meth_params *rparams,
xmlNodePtr inroot, struct propfind_ctx *fctx);
static int report_fb_query(struct transaction_t *txn,
struct meth_params *rparams,
xmlNodePtr inroot, struct propfind_ctx *fctx);
static const char *begin_icalendar(struct buf *buf);
static void end_icalendar(struct buf *buf);
#define ICALENDAR_CONTENT_TYPE "text/calendar; charset=utf-8"
static struct mime_type_t caldav_mime_types[] = {
/* First item MUST be the default type and storage format */
{ ICALENDAR_CONTENT_TYPE, "2.0", "ics",
(struct buf* (*)(void *)) &my_icalcomponent_as_ical_string,
(void * (*)(const struct buf*)) &ical_string_as_icalcomponent,
(void (*)(void *)) &icalcomponent_free, &begin_icalendar, &end_icalendar
},
{ "application/calendar+xml; charset=utf-8", NULL, "xcs",
(struct buf* (*)(void *)) &icalcomponent_as_xcal_string,
(void * (*)(const struct buf*)) &xcal_string_as_icalcomponent,
NULL, &begin_xcal, &end_xcal
},
{ "application/calendar+json; charset=utf-8", NULL, "jcs",
(struct buf* (*)(void *)) &icalcomponent_as_jcal_string,
(void * (*)(const struct buf*)) &jcal_string_as_icalcomponent,
NULL, &begin_jcal, &end_jcal
},
#ifdef WITH_JMAP
{ "application/event+json; charset=utf-8", NULL, "jevent",
(struct buf* (*)(void *)) &icalcomponent_as_jevent_string,
(void * (*)(const struct buf*)) &jevent_string_as_icalcomponent,
NULL, NULL, NULL
},
#endif
{ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
};
static struct patch_doc_t caldav_patch_docs[] = {
#ifdef HAVE_VPATCH
{ ICALENDAR_CONTENT_TYPE "; component=VPATCH; optinfo=\"PATCH-VERSION:1\"",
&caldav_patch },
#endif
{ NULL, &caldav_patch /* silence compiler when !HAVE_VPATCH */}
};
/* Array of supported REPORTs */
static const struct report_type_t caldav_reports[] = {
/* WebDAV Versioning (RFC 3253) REPORTs */
{ "expand-property", NS_DAV, "multistatus", &report_expand_prop,
DACL_READ, 0 },
/* WebDAV ACL (RFC 3744) REPORTs */
{ "acl-principal-prop-set", NS_DAV, "multistatus", &report_acl_prin_prop,
DACL_ADMIN, REPORT_NEED_MBOX | REPORT_DEPTH_ZERO },
/* WebDAV Sync (RFC 6578) REPORTs */
{ "sync-collection", NS_DAV, "multistatus", &report_sync_col,
DACL_READ, REPORT_NEED_MBOX | REPORT_NEED_PROPS },
/* CalDAV (RFC 4791) REPORTs */
{ "calendar-query", NS_CALDAV, "multistatus", &report_cal_query,
DACL_READ, REPORT_NEED_MBOX | REPORT_ALLOW_PROPS },
{ "calendar-multiget", NS_CALDAV, "multistatus", &report_multiget,
DACL_READ, REPORT_NEED_MBOX | REPORT_ALLOW_PROPS },
{ "free-busy-query", NS_CALDAV, NULL, &report_fb_query,
DACL_READFB, REPORT_NEED_MBOX },
{ NULL, 0, NULL, NULL, 0, 0 }
};
/* Array of known "live" properties */
static const struct prop_entry caldav_props[] = {
/* WebDAV (RFC 4918) properties */
{ "creationdate", NS_DAV,
PROP_ALLPROP | PROP_COLLECTION | PROP_RESOURCE,
propfind_creationdate, NULL, NULL },
{ "displayname", NS_DAV,
PROP_ALLPROP | PROP_COLLECTION | PROP_RESOURCE,
propfind_fromdb, proppatch_todb, NULL },
{ "getcontentlanguage", NS_DAV, PROP_ALLPROP | PROP_RESOURCE,
propfind_fromhdr, NULL, "Content-Language" },
{ "getcontentlength", NS_DAV,
PROP_ALLPROP | PROP_COLLECTION | PROP_RESOURCE,
propfind_getlength, NULL, NULL },
{ "getcontenttype", NS_DAV,
PROP_ALLPROP | PROP_COLLECTION | PROP_RESOURCE,
propfind_getcontenttype, NULL, "Content-Type" },
{ "getetag", NS_DAV, PROP_ALLPROP | PROP_COLLECTION | PROP_RESOURCE,
propfind_getetag, NULL, NULL },
{ "getlastmodified", NS_DAV,
PROP_ALLPROP | PROP_COLLECTION | PROP_RESOURCE,
propfind_getlastmod, NULL, NULL },
{ "lockdiscovery", NS_DAV, PROP_ALLPROP | PROP_RESOURCE,
propfind_lockdisc, NULL, NULL },
{ "resourcetype", NS_DAV,
PROP_ALLPROP | PROP_COLLECTION | PROP_RESOURCE,
propfind_restype, proppatch_restype, "calendar" },
{ "supportedlock", NS_DAV, PROP_ALLPROP | PROP_RESOURCE,
propfind_suplock, NULL, NULL },
/* WebDAV Versioning (RFC 3253) properties */
{ "supported-report-set", NS_DAV, PROP_COLLECTION,
propfind_reportset, NULL, (void *) caldav_reports },
/* WebDAV ACL (RFC 3744) properties */
{ "owner", NS_DAV, PROP_COLLECTION | PROP_RESOURCE,
propfind_owner, NULL, NULL },
{ "group", NS_DAV, 0, NULL, NULL, NULL },
{ "supported-privilege-set", NS_DAV, PROP_COLLECTION | PROP_RESOURCE,
propfind_supprivset, NULL, NULL },
{ "current-user-privilege-set", NS_DAV, PROP_COLLECTION | PROP_RESOURCE,
propfind_curprivset, NULL, NULL },
{ "acl", NS_DAV, PROP_COLLECTION | PROP_RESOURCE,
propfind_acl, NULL, NULL },
{ "acl-restrictions", NS_DAV, PROP_COLLECTION | PROP_RESOURCE,
propfind_aclrestrict, NULL, NULL },
{ "inherited-acl-set", NS_DAV, 0, NULL, NULL, NULL },
{ "principal-collection-set", NS_DAV, PROP_COLLECTION | PROP_RESOURCE,
propfind_princolset, NULL, NULL },
/* WebDAV Quota (RFC 4331) properties */
{ "quota-available-bytes", NS_DAV, PROP_COLLECTION,
propfind_quota, NULL, NULL },
{ "quota-used-bytes", NS_DAV, PROP_COLLECTION,
propfind_quota, NULL, NULL },
/* WebDAV Current Principal (RFC 5397) properties */
{ "current-user-principal", NS_DAV, PROP_COLLECTION | PROP_RESOURCE,
propfind_curprin, NULL, NULL },
/* WebDAV POST (RFC 5995) properties */
{ "add-member", NS_DAV, PROP_COLLECTION,
propfind_addmember, NULL, NULL },
/* WebDAV Sync (RFC 6578) properties */
{ "sync-token", NS_DAV, PROP_COLLECTION,
propfind_sync_token, NULL, SYNC_TOKEN_URL_SCHEME },
/* WebDAV Sharing (draft-pot-webdav-resource-sharing) properties */
{ "share-access", NS_DAV, PROP_COLLECTION,
propfind_shareaccess, NULL, NULL },
{ "invite", NS_DAV, PROP_COLLECTION,
propfind_invite, NULL, NULL },
{ "sharer-resource-uri", NS_DAV, PROP_COLLECTION,
propfind_sharedurl, NULL, NULL },
/* Backwards compatibility with Apple calendar sharing clients */
{ "invite", NS_CS, PROP_COLLECTION,
propfind_invite, NULL, "calendarserver-sharing" },
{ "allowed-sharing-modes", NS_CS, PROP_COLLECTION,
propfind_sharingmodes, NULL, NULL },
{ "shared-url", NS_CS, PROP_COLLECTION,
propfind_sharedurl, NULL, "calendarserver-sharing" },
/* CalDAV (RFC 4791) properties */
{ "calendar-data", NS_CALDAV, PROP_RESOURCE | PROP_PRESCREEN | PROP_CLEANUP,
propfind_caldata, NULL, &partial_caldata },
{ "schedule-user-address", NS_CYRUS, PROP_RESOURCE,
propfind_scheduser, NULL, NULL },
{ "calendar-description", NS_CALDAV, PROP_COLLECTION,
propfind_fromdb, proppatch_todb, NULL },
{ "calendar-timezone", NS_CALDAV, PROP_COLLECTION | PROP_PRESCREEN,
propfind_timezone, proppatch_timezone, NULL },
{ "supported-calendar-component-set", NS_CALDAV, PROP_COLLECTION,
propfind_calcompset, proppatch_calcompset, NULL },
{ "supported-calendar-data", NS_CALDAV, PROP_COLLECTION,
propfind_suppcaldata, NULL, NULL },
{ "max-resource-size", NS_CALDAV, PROP_COLLECTION,
propfind_maxsize, NULL, NULL },
{ "min-date-time", NS_CALDAV, PROP_COLLECTION,
propfind_minmaxdate, NULL, &caldav_epoch },
{ "max-date-time", NS_CALDAV, PROP_COLLECTION,
propfind_minmaxdate, NULL, &caldav_eternity },
{ "max-instances", NS_CALDAV, 0, NULL, NULL, NULL },
{ "max-attendees-per-instance", NS_CALDAV, 0, NULL, NULL, NULL },
/* CalDAV Scheduling (RFC 6638) properties */
{ "schedule-tag", NS_CALDAV, PROP_RESOURCE,
propfind_schedtag, NULL, NULL },
{ "schedule-default-calendar-URL", NS_CALDAV, PROP_COLLECTION,
propfind_scheddefault, NULL, NULL },
{ "schedule-calendar-transp", NS_CALDAV, PROP_COLLECTION,
propfind_caltransp, proppatch_caltransp, NULL },
/* Calendar Availability (RFC 7953) properties */
{ "calendar-availability", NS_CALDAV, PROP_COLLECTION | PROP_PRESCREEN,
propfind_availability, proppatch_availability, NULL },
/* Backwards compatibility with Apple VAVAILABILITY clients */
{ "calendar-availability", NS_CS, PROP_COLLECTION | PROP_PRESCREEN,
propfind_availability, proppatch_availability, NULL },
/* Time Zones by Reference (RFC 7809) properties */
{ "timezone-service-set", NS_CALDAV, PROP_COLLECTION,
propfind_tzservset, NULL, NULL },
{ "calendar-timezone-id", NS_CALDAV, PROP_COLLECTION,
propfind_tzid, proppatch_tzid, NULL },
/* RSCALE (RFC 7529) properties */
{ "supported-rscale-set", NS_CALDAV, PROP_COLLECTION,
propfind_rscaleset, NULL, NULL },
/* CalDAV Extensions (draft-daboo-caldav-extensions) properties */
{ "supported-calendar-component-sets", NS_CALDAV, PROP_COLLECTION,
propfind_calcompset, NULL, NULL },
/* Apple Calendar Server properties */
{ "getctag", NS_CS, PROP_ALLPROP | PROP_COLLECTION,
propfind_sync_token, NULL, "" },
/* Apple Mobile Me properties */
{ "bulk-requests", NS_MECOM, PROP_COLLECTION,
propfind_bulkrequests, NULL, NULL },
/* Apple Push Notifications Service properties */
{ "push-transports", NS_CS, PROP_COLLECTION,
propfind_push_transports, NULL, (void *) MBTYPE_CALENDAR },
{ "pushkey", NS_CS, PROP_COLLECTION,
propfind_pushkey, NULL, NULL },
{ NULL, 0, 0, NULL, NULL, NULL }
};
static struct meth_params caldav_params = {
caldav_mime_types,
&caldav_parse_path,
&caldav_check_precond,
{ (db_open_proc_t) &caldav_open_mailbox,
(db_close_proc_t) &caldav_close,
(db_proc_t) &caldav_begin,
(db_proc_t) &caldav_commit,
(db_proc_t) &caldav_abort,
(db_lookup_proc_t) &caldav_lookup_resource,
(db_foreach_proc_t) &caldav_foreach,
(db_write_proc_t) &caldav_write,
(db_delete_proc_t) &caldav_delete },
&caldav_acl,
{ CALDAV_UID_CONFLICT, &caldav_copy },
&caldav_delete_cal,
&caldav_get,
{ CALDAV_LOCATION_OK, MBTYPE_CALENDAR },
caldav_patch_docs,
{ POST_ADDMEMBER | POST_SHARE | POST_BULK, &caldav_post, &caldav_import },
{ CALDAV_SUPP_DATA, &caldav_put },
{ 0, caldav_props }, /* Allow infinite depth */
caldav_reports
};
/* Namespace for CalDAV collections */
struct namespace_t namespace_calendar = {
URL_NS_CALENDAR, 0, "calendar", "/dav/calendars", "/.well-known/caldav",
http_allow_noauth_get, /*authschemes*/0,
MBTYPE_CALENDAR,
(ALLOW_READ | ALLOW_POST | ALLOW_WRITE | ALLOW_DELETE |
#ifdef HAVE_VPATCH
ALLOW_PATCH |
#endif
#ifdef HAVE_VAVAILABILITY
ALLOW_CAL_AVAIL |
#endif
ALLOW_DAV | ALLOW_PROPPATCH | ALLOW_MKCOL | ALLOW_ACL | ALLOW_CAL ),
&my_caldav_init, &my_caldav_auth, my_caldav_reset, &my_caldav_shutdown,
&dav_premethod, /*bearer*/NULL,
{
{ &meth_acl, &caldav_params }, /* ACL */
{ NULL, NULL }, /* BIND */
{ &meth_copy_move, &caldav_params }, /* COPY */
{ &meth_delete, &caldav_params }, /* DELETE */
{ &meth_get_head_cal, NULL }, /* GET */
{ &meth_get_head_cal, NULL }, /* HEAD */
{ &meth_lock, &caldav_params }, /* LOCK */
{ &meth_mkcol, &caldav_params }, /* MKCALENDAR */
{ &meth_mkcol, &caldav_params }, /* MKCOL */
{ &meth_copy_move, &caldav_params }, /* MOVE */
{ &meth_options_cal, &caldav_parse_path }, /* OPTIONS */
{ &meth_patch, &caldav_params }, /* PATCH */
{ &meth_post, &caldav_params }, /* POST */
{ &meth_propfind, &caldav_params }, /* PROPFIND */
{ &meth_proppatch, &caldav_params }, /* PROPPATCH */
{ &meth_put, &caldav_params }, /* PUT */
{ &meth_report, &caldav_params }, /* REPORT */
{ &meth_trace, &caldav_parse_path }, /* TRACE */
{ NULL, NULL }, /* UNBIND */
{ &meth_unlock, &caldav_params } /* UNLOCK */
}
};
/* Namespace for Freebusy Read URL */
struct namespace_t namespace_freebusy = {
URL_NS_FREEBUSY, 0, "freebusy", "/freebusy", NULL,
http_allow_noauth_get, /*authschemes*/0,
MBTYPE_CALENDAR,
ALLOW_READ,
NULL, NULL, NULL, NULL, NULL, NULL,
{
{ NULL, NULL }, /* ACL */
{ NULL, NULL }, /* BIND */
{ NULL, NULL }, /* COPY */
{ NULL, NULL }, /* DELETE */
{ &meth_get_head_fb, NULL }, /* GET */
{ &meth_get_head_fb, NULL }, /* HEAD */
{ NULL, NULL }, /* LOCK */
{ NULL, NULL }, /* MKCALENDAR */
{ NULL, NULL }, /* MKCOL */
{ NULL, NULL }, /* MOVE */
{ &meth_options, &caldav_parse_path }, /* OPTIONS */
{ NULL, NULL }, /* PATCH */
{ NULL, NULL }, /* POST */
{ NULL, NULL }, /* PROPFIND */
{ NULL, NULL }, /* PROPPATCH */
{ NULL, NULL }, /* PUT */
{ NULL, NULL }, /* REPORT */
{ &meth_trace, &caldav_parse_path }, /* TRACE */
{ NULL, NULL }, /* UNBIND */
{ NULL, NULL } /* UNLOCK */
}
};
static const struct cal_comp_t {
const char *name;
unsigned long type;
} cal_comps[] = {
{ "VEVENT", CAL_COMP_VEVENT },
{ "VTODO", CAL_COMP_VTODO },
{ "VJOURNAL", CAL_COMP_VJOURNAL },
{ "VFREEBUSY", CAL_COMP_VFREEBUSY },
#ifdef HAVE_VAVAILABILITY
{ "VAVAILABILITY", CAL_COMP_VAVAILABILITY },
#endif
#ifdef HAVE_VPOLL
{ "VPOLL", CAL_COMP_VPOLL },
#endif
// { "VTIMEZONE", CAL_COMP_VTIMEZONE },
// { "VALARM", CAL_COMP_VALARM },
{ NULL, 0 }
};
static void my_caldav_init(struct buf *serverinfo)
{
const char *domains;
char *domain;
tok_t tok;
buf_printf(serverinfo, " SQLite/%s", sqlite3_libversion());
buf_printf(serverinfo, " LibiCal/%s", ICAL_VERSION);
#ifdef HAVE_RSCALE
if ((rscale_calendars = icalrecurrencetype_rscale_supported_calendars())) {
icalarray_sort(rscale_calendars, &rscale_cmp);
buf_printf(serverinfo, " ICU4C/%s", U_ICU_VERSION);
}
#endif
buf_printf(serverinfo, " Jansson/%s", JANSSON_VERSION);
namespace_calendar.enabled =
config_httpmodules & IMAP_ENUM_HTTPMODULES_CALDAV;
if (!namespace_calendar.enabled) return;
if (!config_getstring(IMAPOPT_CALENDARPREFIX)) {
fatal("Required 'calendarprefix' option is not set", EC_CONFIG);
}
#ifdef HAVE_IANA_PARAMS
config_allowsched = config_getenum(IMAPOPT_CALDAV_ALLOWSCHEDULING);
if (config_allowsched) {
namespace_calendar.allow |= ALLOW_CAL_SCHED;
/* Always treat unknown parameters as IANA */
ical_set_unknown_token_handling_setting(ICAL_ASSUME_IANA_TOKEN);
}
if (config_getswitch(IMAPOPT_CALDAV_ALLOWATTACH))
namespace_calendar.allow |= ALLOW_CAL_ATTACH;
#endif /* HAVE_IANA_PARAMS */
#ifdef HAVE_TZ_BY_REF
if (namespace_tzdist.enabled) {
/* Tell libical to use our builtin TZ */
/* XXX MUST be done before any use of libical, e.g caldav_init() */
char zonedir[MAX_MAILBOX_PATH+1];
snprintf(zonedir, MAX_MAILBOX_PATH, "%s%s",
config_dir, FNAME_ZONEINFODIR);
set_zone_directory(zonedir);
icaltimezone_set_tzid_prefix("");
icaltimezone_set_builtin_tzdata(1);
namespace_calendar.allow |= ALLOW_CAL_NOTZ;
}
#endif
caldav_init();
webdav_init();
namespace_principal.enabled = 1;
/* Apple clients check principal resources for these DAV tokens */
namespace_principal.allow |= namespace_calendar.allow &
(ALLOW_CAL | ALLOW_CAL_AVAIL | ALLOW_CAL_SCHED | ALLOW_CAL_ATTACH);
namespace_freebusy.enabled =
config_httpmodules & IMAP_ENUM_HTTPMODULES_FREEBUSY;
compile_time = calc_compile_time(__TIME__, __DATE__);
buf_printf(&ical_prodid_buf,
"-//CyrusIMAP.org/Cyrus %s//EN", CYRUS_VERSION);
ical_prodid = buf_cstring(&ical_prodid_buf);
/* Create an array of calendar-user-address-set domains */
domains = config_getstring(IMAPOPT_CALENDAR_USER_ADDRESS_SET);
if (!domains) domains = config_defdomain;
if (!domains) domains = config_servername;
tok_init(&tok, domains, " \t", TOK_TRIMLEFT|TOK_TRIMRIGHT);
while ((domain = tok_next(&tok))) appendstrlist(&cua_domains, domain);
tok_fini(&tok);
utc_zone = icaltimezone_get_utc_timezone();
}
static int _create_mailbox(const char *userid, const char *mailboxname,
int type, int useracl, int anyoneacl,
const char *displayname)
{
int r = 0;
char rights[100];
struct mailbox *mailbox = NULL;
r = mboxlist_lookup(mailboxname, NULL, NULL);
if (!r) return 0;
if (r != IMAP_MAILBOX_NONEXISTENT) return r;
/* Create locally */
r = mboxlist_createmailbox(mailboxname, type,
NULL, 0,
userid, httpd_authstate,
0, 0, 0, 0, displayname ? &mailbox : NULL);
if (!r && displayname) {
annotate_state_t *astate = NULL;
r = mailbox_get_annotate_state(mailbox, 0, &astate);
if (!r) {
const char *annot = DAV_ANNOT_NS "<" XML_NS_DAV ">displayname";
struct buf value = BUF_INITIALIZER;
buf_init_ro_cstr(&value, displayname);
r = annotate_state_writemask(astate, annot, userid, &value);
}
mailbox_close(&mailbox);
}
if (!r && useracl) {
cyrus_acl_masktostr(useracl, rights);
r = mboxlist_setacl(&httpd_namespace, mailboxname, userid, rights,
1, httpd_userid, httpd_authstate);
}
if (!r && anyoneacl) {
cyrus_acl_masktostr(anyoneacl, rights);
r = mboxlist_setacl(&httpd_namespace, mailboxname, "anyone", rights,
1, httpd_userid, httpd_authstate);
}
if (r) syslog(LOG_ERR, "IOERROR: failed to create %s (%s)",
mailboxname, error_message(r));
return r;
}
int caldav_create_defaultcalendars(const char *userid)
{
int r;
char *mailboxname;
struct buf acl = BUF_INITIALIZER;
/* calendar-home-set */
mailboxname = caldav_mboxname(userid, NULL);
r = mboxlist_lookup(mailboxname, NULL, NULL);
if (r == IMAP_MAILBOX_NONEXISTENT) {
/* Find location of INBOX */
char *inboxname = mboxname_user_mbox(userid, NULL);
mbentry_t *mbentry = NULL;
r = http_mlookup(inboxname, &mbentry, NULL);
free(inboxname);
if (r == IMAP_MAILBOX_NONEXISTENT) r = IMAP_INVALID_USER;
if (!r && mbentry->server) {
proxy_findserver(mbentry->server, &http_protocol, httpd_userid,
&backend_cached, NULL, NULL, httpd_in);
mboxlist_entry_free(&mbentry);
free(mailboxname);
return r;
}
mboxlist_entry_free(&mbentry);
if (!r) r = _create_mailbox(userid, mailboxname, MBTYPE_CALENDAR,
ACL_ALL | DACL_READFB, DACL_READFB, NULL);
}
free(mailboxname);
if (r) goto done;
if (config_getswitch(IMAPOPT_CALDAV_CREATE_DEFAULT)) {
/* Default calendar */
mailboxname = caldav_mboxname(userid, SCHED_DEFAULT);
r = _create_mailbox(userid, mailboxname, MBTYPE_CALENDAR,
ACL_ALL | DACL_READFB, DACL_READFB, "personal");
free(mailboxname);
if (r) goto done;
}
if (config_getswitch(IMAPOPT_CALDAV_CREATE_SCHED) &&
namespace_calendar.allow & ALLOW_CAL_SCHED) {
/* Scheduling Inbox */
mailboxname = caldav_mboxname(userid, SCHED_INBOX);
r = _create_mailbox(userid, mailboxname, MBTYPE_CALENDAR,
ACL_ALL | DACL_SCHED, DACL_SCHED, NULL);
free(mailboxname);
if (r) goto done;
/* Scheduling Outbox */
mailboxname = caldav_mboxname(userid, SCHED_OUTBOX);
r = _create_mailbox(userid, mailboxname, MBTYPE_CALENDAR,
ACL_ALL | DACL_SCHED, 0, NULL);
free(mailboxname);
if (r) goto done;
}
if (config_getswitch(IMAPOPT_CALDAV_CREATE_ATTACH) &&
namespace_calendar.allow & ALLOW_CAL_ATTACH) {
/* Managed Attachment Collection */
mailboxname = caldav_mboxname(userid, MANAGED_ATTACH);
r = _create_mailbox(userid, mailboxname, MBTYPE_COLLECTION,
ACL_ALL, ACL_READ, NULL);
free(mailboxname);
if (r) goto done;
}
done:
buf_free(&acl);
return r;
}
static void my_caldav_auth(const char *userid)
{
int r;
if (httpd_userisadmin ||
global_authisa(httpd_authstate, IMAPOPT_PROXYSERVERS)) {
/* admin or proxy from frontend - won't have DAV database */
return;
}
if (config_mupdate_server && !config_getstring(IMAPOPT_PROXYSERVERS)) {
/* proxy-only server - won't have DAV database */
return;
}
else {
/* Open CalDAV DB for 'userid' */
my_caldav_reset();
auth_caldavdb = caldav_open_userid(userid);
if (!auth_caldavdb) fatal("Unable to open CalDAV DB", EC_IOERR);
}
/* Auto-provision calendars for 'userid' */
r = caldav_create_defaultcalendars(userid);
if (r) {
syslog(LOG_ERR, "could not autoprovision calendars for userid %s: %s",
userid, error_message(r));
}
}
static void my_caldav_reset(void)
{
if (auth_caldavdb) caldav_close(auth_caldavdb);
auth_caldavdb = NULL;
}
static void my_caldav_shutdown(void)
{
if (rscale_calendars) icalarray_free(rscale_calendars);
rscale_calendars = NULL;
buf_free(&ical_prodid_buf);
freestrlist(cua_domains);
cua_domains = NULL;
my_caldav_reset();
webdav_done();
caldav_done();
}
/* Parse request-target path in CalDAV namespace */
static int caldav_parse_path(const char *path,
struct request_target_t *tgt, const char **errstr)
{
int r;
r = calcarddav_parse_path(path, tgt,
config_getstring(IMAPOPT_CALENDARPREFIX),
errstr);
if (r) return r;
/* Set proper Allow bits based on collection */
if (tgt->namespace && tgt->namespace->id == URL_NS_FREEBUSY) {
/* Read-only collections */
tgt->allow = ALLOW_READ;
}
else if (!tgt->collection) {
/* Allow POST to cal-home-set (share reply) */
tgt->allow |= ALLOW_POST;
}
else if (!strncmp(tgt->collection, MANAGED_ATTACH, strlen(MANAGED_ATTACH))) {
/* Read-only non-calendar collection */
tgt->allow = ALLOW_READ;
tgt->flags = TGT_MANAGED_ATTACH;
}
else if (!strncmp(tgt->collection, SCHED_INBOX, strlen(SCHED_INBOX))) {
/* Can only read and DELETE resources from this collection */
tgt->allow &= ALLOW_READ_MASK;
if (tgt->resource) tgt->allow |= ALLOW_DELETE;
tgt->flags = TGT_SCHED_INBOX;
}
else if (!strncmp(tgt->collection, SCHED_OUTBOX, strlen(SCHED_OUTBOX))){
/* Can only POST to this collection (free/busy request) */
tgt->allow &= ALLOW_READ_MASK;
if (!tgt->resource) tgt->allow |= ALLOW_POST;
tgt->flags = TGT_SCHED_OUTBOX;
}
else if (tgt->resource) {
/* Resource in regular calendar collection (POST for managed attach) */
tgt->allow |= (namespace_calendar.allow & ALLOW_PATCH) | ALLOW_POST;
}
return 0;
}
/* Check headers for any preconditions */
static int caldav_check_precond(struct transaction_t *txn,
struct meth_params *params,
struct mailbox *mailbox, const void *data,
const char *etag, time_t lastmod)
{
const struct caldav_data *cdata = (const struct caldav_data *) data;
const char *stag = cdata && cdata->organizer ? cdata->sched_tag : NULL;
const char **hdr;
int precond;
/* Do normal WebDAV/HTTP checks (primarily for lock-token via If header) */
precond = dav_check_precond(txn, params, mailbox, data, etag, lastmod);
if (precond == HTTP_PRECOND_FAILED &&
cdata->comp_flags.tzbyref && !cdata->organizer && cdata->sched_tag) {
/* Resource has just had VTIMEZONEs stripped -
check if conditional matches previous ETag */
precond = check_precond(txn, cdata->sched_tag, lastmod);
}
if (!(precond == HTTP_OK || precond == HTTP_PARTIAL)) return precond;
/* Per RFC 6638, check Schedule-Tag */
if ((hdr = spool_getheader(txn->req_hdrs, "If-Schedule-Tag-Match"))) {
/* Special case for Apple 'If-Schedule-Tag-Match:' with no value
* and also no schedule tag on the record - let that match */
if (cdata && !stag && !hdr[0][0]) return precond;
if (etagcmp(hdr[0], stag)) return HTTP_PRECOND_FAILED;
}
if (txn->meth == METH_GET || txn->meth == METH_HEAD) {
/* Fill in Schedule-Tag for successful GET/HEAD */
txn->resp_body.stag = stag;
}
return precond;
}
static int caldav_acl(struct transaction_t *txn, xmlNodePtr priv, int *rights)
{
if (!xmlStrcmp(priv->ns->href, BAD_CAST XML_NS_CALDAV)) {
/* CalDAV privileges */
switch (txn->req_tgt.flags) {
case TGT_SCHED_INBOX:
if (!xmlStrcmp(priv->name, BAD_CAST "schedule-deliver"))
*rights |= DACL_SCHED;
else if (!xmlStrcmp(priv->name, BAD_CAST "schedule-deliver-invite"))
*rights |= DACL_INVITE;
else if (!xmlStrcmp(priv->name, BAD_CAST "schedule-deliver-reply"))
*rights |= DACL_REPLY;
else if (!xmlStrcmp(priv->name, BAD_CAST "schedule-query-freebusy"))
*rights |= DACL_SCHEDFB;
else {
/* DAV:not-supported-privilege */
txn->error.precond = DAV_SUPP_PRIV;
}
break;
case TGT_SCHED_OUTBOX:
if (!xmlStrcmp(priv->name, BAD_CAST "schedule-send"))
*rights |= DACL_SCHED;
else if (!xmlStrcmp(priv->name, BAD_CAST "schedule-send-invite"))
*rights |= DACL_INVITE;
else if (!xmlStrcmp(priv->name, BAD_CAST "schedule-send-reply"))
*rights |= DACL_REPLY;
else if (!xmlStrcmp(priv->name, BAD_CAST "schedule-send-freebusy"))
*rights |= DACL_SCHEDFB;
else {
/* DAV:not-supported-privilege */
txn->error.precond = DAV_SUPP_PRIV;
}
break;
default:
if (!xmlStrcmp(priv->name, BAD_CAST "read-free-busy"))
*rights |= DACL_READFB;
else {
/* DAV:not-supported-privilege */
txn->error.precond = DAV_SUPP_PRIV;
}
break;
}
/* Done processing this priv */