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This commit was manufactured by cvs2svn to create tag 'MC_4_5_47'.MC_4_5_47
svn path=/tags/MC_4_5_47/; revision=3158
Diffstat (limited to 'libical/src/libicalss/icalstore.c')
-rw-r--r-- | libical/src/libicalss/icalstore.c | 858 |
1 files changed, 0 insertions, 858 deletions
diff --git a/libical/src/libicalss/icalstore.c b/libical/src/libicalss/icalstore.c deleted file mode 100644 index 382464e476..0000000000 --- a/libical/src/libicalss/icalstore.c +++ /dev/null @@ -1,858 +0,0 @@ -/* -*- Mode: C -*- - ====================================================================== - FILE: icalstore.c - CREATOR: eric 28 November 1999 - - $Id$ - $Locker$ - - (C) COPYRIGHT 1999 Eric Busboom - http://www.softwarestudio.org - - The contents of this file are subject to the Mozilla Public License - Version 1.0 (the "License"); you may not use this file except in - compliance with the License. You may obtain a copy of the License at - http://www.mozilla.org/MPL/ - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and - limitations under the License. - - The Original Code is eric. The Initial Developer of the Original - Code is Eric Busboom - - - ======================================================================*/ - - -/* - - icalstore manages a database of ical components and offers - interfaces for reading, writting and searching for components. - - icalstore groups components in to clusters based on their DTSTART - time -- all components that start in the same month are grouped - together in a single file. All files in a sotre are kept in a single - directory. ( If a component does not have DTSTART, the store uses - DTSTAMP or CREATE ) - - The primary interfaces are icalstore_first and icalstore_next. These - routine iterate through all of the components in the store, subject - to the current gauge. A gauge is an icalcomponent that is tested - against other componets for a match. If a gauge has been set with - icalstore_select, icalstore_first and icalstore_next will only - return componentes that match the gauge. - - The Store generated UIDs for all objects that are stored if they do - not already have a UID. The UID is the name of the cluster (month & - year as MMYYYY) plus a unique serial number. The serial number is - stored as a property of the cluster. - -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - - -#include "ical.h" -#include "icalstore.h" -#include "pvl.h" -#include "icalerror.h" -#include "icalparser.h" -#include "icalcluster.h" - -#include <limits.h> -#include <dirent.h> /* for opendir() */ -#include <errno.h> -#include <sys/types.h> /* for opendir() */ -#include <sys/stat.h> /* for stat */ -#include <unistd.h> /* for stat, getpid */ -#include <time.h> /* for clock() */ -#include <stdlib.h> /* for rand(), srand() */ -#include <sys/utsname.h> /* for uname */ -#include <string.h> /* for strdup */ - - -struct icalstore_impl -{ - char* dir; - icalcomponent* gauge; - icalcluster* cluster; - int first_component; - pvl_list directory; - pvl_elem directory_iterator; -}; - -struct icalstore_impl* icalstore_new_impl() -{ - struct icalstore_impl* comp; - - if ( ( comp = (struct icalstore_impl*) - malloc(sizeof(struct icalstore_impl))) == 0) { - icalerror_set_errno(ICAL_NEWFAILED_ERROR); - return 0; - } - - return comp; -} - -void icalstore_lock(char* dir) -{ -} - - -void icalstore_unlock(char* dir) -{ -} - -/* Load the contents of the store directory into the store's internal directory list*/ -icalerrorenum icalstore_read_directory(struct icalstore_impl* impl) -{ - struct dirent *de; - DIR* dp; - char *str; - - dp = opendir(impl->dir); - - if ( dp == 0) { - icalerror_set_errno(ICAL_FILE_ERROR); - return ICAL_FILE_ERROR; - } - - /* clear contents of directory list */ - while((str = pvl_pop(impl->directory))){ - free(str); - } - - /* load all of the cluster names in the directory list */ - for(de = readdir(dp); - de != 0; - de = readdir(dp)){ - - /* Remove known directory names '.' and '..'*/ - if (strcmp(de->d_name,".") == 0 || - strcmp(de->d_name,"..") == 0 ){ - continue; - } - - pvl_push(impl->directory, (void*)strdup(de->d_name)); - } - - closedir(dp); - - return ICAL_NO_ERROR; -} - -icalstore* icalstore_new(char* dir) -{ - struct icalstore_impl *impl = icalstore_new_impl(); - struct stat sbuf; - - if (impl == 0){ - return 0; - } - - icalerror_check_arg_rz( (dir!=0), "dir"); - - if (stat(dir,&sbuf) != 0){ - icalerror_set_errno(ICAL_FILE_ERROR); - return 0; - } - - /* dir is not the name of a direectory*/ - if (!S_ISDIR(sbuf.st_mode)){ - icalerror_set_errno(ICAL_USAGE_ERROR); - return 0; - } - - icalstore_lock(dir); - - impl = icalstore_new_impl(); - - if (impl ==0){ - icalerror_set_errno(ICAL_ALLOCATION_ERROR); - return 0; - } - - impl->directory = pvl_newlist(); - impl->directory_iterator = 0; - impl->dir = (char*)strdup(dir); - impl->gauge = 0; - impl->first_component = 0; - impl->cluster = 0; - - icalstore_read_directory(impl); - - return (icalstore*) impl; -} - -void icalstore_free(icalstore* s) -{ - struct icalstore_impl *impl = (struct icalstore_impl*)s; - char* str; - - icalstore_unlock(impl->dir); - - if(impl->dir !=0){ - free(impl->dir); - } - - if(impl->gauge !=0){ - icalcomponent_free(impl->gauge); - } - - if(impl->cluster !=0){ - icalcluster_free(impl->cluster); - } - - while(impl->directory !=0 && (str=pvl_pop(impl->directory)) != 0){ - free(str); - } - - if(impl->directory != 0){ - pvl_free(impl->directory); - } - - impl->directory = 0; - impl->directory_iterator = 0; - impl->dir = 0; - impl->gauge = 0; - impl->first_component = 0; - - free(impl); - -} - -/* icalstore_next_uid_number updates a serial number in the Store - directory in a file called SEQUENCE */ - -int icalstore_next_uid_number(icalstore* store) -{ - struct icalstore_impl *impl = (struct icalstore_impl*)store; - char sequence = 0; - char temp[128]; - char filename[PATH_MAX]; - char *r; - FILE *f; - struct stat sbuf; - - icalerror_check_arg_rz( (store!=0), "store"); - - sprintf(filename,"%s/%s",impl->dir,"SEQUENCE"); - - /* Create the file if it does not exist.*/ - if (stat(filename,&sbuf) == -1 || !S_ISREG(sbuf.st_mode)){ - - f = fopen(filename,"w"); - if (f != 0){ - fprintf(f,"0"); - fclose(f); - } else { - icalerror_warn("Can't create SEQUENCE file in icalstore_next_uid_number"); - return 0; - } - - } - - if ( (f = fopen(filename,"r+")) != 0){ - - rewind(f); - r = fgets(temp,128,f); - - if (r == 0){ - sequence = 1; - } else { - sequence = atoi(temp)+1; - } - - rewind(f); - - fprintf(f,"%d",sequence); - - fclose(f); - - return sequence; - - } else { - icalerror_warn("Can't create SEQUENCE file in icalstore_next_uid_number"); - return 0; - } - -} - -icalerrorenum icalstore_next_cluster(icalstore* store) -{ - struct icalstore_impl *impl = (struct icalstore_impl*)store; - char path[PATH_MAX]; - - if (impl->directory_iterator == 0){ - icalerror_set_errno(ICAL_INTERNAL_ERROR); - return ICAL_INTERNAL_ERROR; - } - impl->directory_iterator = pvl_next(impl->directory_iterator); - - if (impl->directory_iterator == 0){ - /* There are no more clusters */ - impl->cluster = 0; - return ICAL_NO_ERROR; - } - - sprintf(path,"%s/%s",impl->dir,(char*)pvl_data(impl->directory_iterator)); - - icalcluster_free(impl->cluster); - - impl->cluster = icalcluster_new(path); - - return icalerrno; -} - -void icalstore_add_uid(icalstore* store, icalstore* comp) -{ - char uidstring[PATH_MAX]; - icalproperty *uid; - struct utsname unamebuf; - - icalerror_check_arg_rv( (store!=0), "store"); - icalerror_check_arg_rv( (comp!=0), "comp"); - - uid = icalcomponent_get_first_property(comp,ICAL_UID_PROPERTY); - - if (uid == 0) { - - uname(&unamebuf); - - sprintf(uidstring,"%d-%s",(int)getpid(),unamebuf.nodename); - - uid = icalproperty_new_uid(uidstring); - icalcomponent_add_property(comp,uid); - } else { - - strcpy(uidstring,icalproperty_get_uid(uid)); - } -} - - -/* This assumes that the top level component is a VCALENDAR, and there - is an inner component of type VEVENT, VTODO or VJOURNAL. The inner - component must have a DTSTART property */ - -icalerrorenum icalstore_add_component(icalstore* store, icalstore* comp) -{ - struct icalstore_impl *impl; - char clustername[PATH_MAX]; - icalproperty *dt, *count; - icalvalue *v; - struct icaltimetype tm; - icalerrorenum error = ICAL_NO_ERROR; - icalcomponent *inner; - - impl = (struct icalstore_impl*)store; - icalerror_check_arg_rz( (store!=0), "store"); - icalerror_check_arg_rz( (comp!=0), "comp"); - - errno = 0; - - icalstore_add_uid(store,comp); - - /* Determine which cluster this object belongs in. This is a HACK */ - - for(inner = icalcomponent_get_first_component(comp,ICAL_ANY_COMPONENT); - inner != 0; - inner = icalcomponent_get_next_component(comp,ICAL_ANY_COMPONENT)){ - - dt = icalcomponent_get_first_property(inner,ICAL_DTSTART_PROPERTY); - - if (dt != 0){ - break; - } - } - - if (dt == 0){ - icalerror_warn("The component does not have a DTSTART property, so it cannot be added to the store"); - icalerror_set_errno(ICAL_BADARG_ERROR); - return ICAL_BADARG_ERROR; - } - - v = icalproperty_get_value(dt); - - tm = icalvalue_get_datetime(v); - - snprintf(clustername,PATH_MAX,"%s/%04d%02d",impl->dir,tm.year,tm.month); - - /* Load the cluster and insert the object */ - - if(impl->cluster != 0 && - strcmp(clustername,icalcluster_path(impl->cluster)) != 0 ){ - icalcluster_free(impl->cluster); - impl->cluster = 0; - } - - if (impl->cluster == 0){ - impl->cluster = icalcluster_new(clustername); - - if (impl->cluster == 0){ - error = icalerrno; - } - } - - if (error != ICAL_NO_ERROR){ - icalerror_set_errno(error); - return error; - } - - /* Add the component to the cluster */ - - icalcluster_add_component(impl->cluster,comp); - - - /* Increment the clusters count value */ - count = icalcomponent_get_first_property( - icalcluster_get_component(impl->cluster), - ICAL_XLICCLUSTERCOUNT_PROPERTY); - - if (count == 0){ - icalerror_set_errno(ICAL_INTERNAL_ERROR); - return ICAL_INTERNAL_ERROR; - } - - icalproperty_set_xlicclustercount(count, - icalproperty_get_xlicclustercount(count)+1); - - - icalcluster_mark(impl->cluster); - - return ICAL_NO_ERROR; -} - -/* Remove a component in the current cluster */ -icalerrorenum icalstore_remove_component(icalstore* store, icalstore* comp) -{ - struct icalstore_impl *impl = (struct icalstore_impl*)store; - icalproperty *count; - - icalerror_check_arg_re((store!=0),"store",ICAL_BADARG_ERROR); - icalerror_check_arg_re((comp!=0),"comp",ICAL_BADARG_ERROR); - icalerror_check_arg_re((impl->cluster!=0),"Cluster pointer",ICAL_USAGE_ERROR); - -/* HACK The following code should be used to ensure that the component - the caller is trying to remove is actually in the cluster, but it - resets the internal iterators, which immediately ends any loops over - the cluster the caller may have in progress - - for(c = icalcluster_get_first_component( - impl->cluster, - ICAL_ANY_COMPONENT); - c != 0; - c = icalcluster_get_next_component( - impl->cluster, - ICAL_ANY_COMPONENT)){ - - if (c == comp){ - found = 1; - } - - } - - if (found != 1){ - icalerror_warn("icalstore_remove_component: component is not part of current cluster"); - icalerror_set_errno(ICAL_USAGE_ERROR); - return ICAL_USAGE_ERROR; - } - -*/ - - icalcluster_remove_component(impl->cluster, - comp); - - icalcluster_mark(impl->cluster); - - /* Decrement the clusters count value */ - count = icalcomponent_get_first_property( - icalcluster_get_component(impl->cluster), - ICAL_XLICCLUSTERCOUNT_PROPERTY); - - if (count == 0){ - icalerror_set_errno(ICAL_INTERNAL_ERROR); - return ICAL_INTERNAL_ERROR; - } - - icalproperty_set_xlicclustercount(count, - icalproperty_get_xlicclustercount(count)-1); - - return ICAL_NO_ERROR; -} - -/* Convert a VQUERY component into a gauge */ -icalcomponent* icalstore_make_gauge(icalcomponent* query); - -/* icalstore_test compares a component against a gauge, and returns - true if the component passes the test - - The gauge is a VCALENDAR component that specifies how to test the - target components. The guage holds a collection of VEVENT, VTODO or - VJOURNAL sub-components. Each of the sub-components has a - collection of properties that are compared to corresponding - properties in the target component, according to the - X-LIC-COMPARETYPE parameters to the gauge's properties. - - When a gauge has several sub-components, the results of testing the - target against each of them is ORed together - the target - component will pass if it matches any of the sub-components in the - gauge. However, the results of matching the proeprties in a - sub-component are ANDed -- the target must match every property in - a gauge sub-component to match the sub-component. - - Here is an example: - - BEGIN:XROOT - BEGIN:VCOMPONENT - BEGIN:VEVENT - DTSTART;X-LIC-COMPARETYPE=LESS:19981025T020000 - ORGANIZER;X-LIC-COMPARETYPE=EQUAL:mrbig@host.com - END:VEVENT - BEGIN:VEVENT - LOCATION;X-LIC-COMPARETYPE=EQUAL:McNary's Pub - END:VEVENT - END:VCALENDAR - END:XROOT - - This gauge has two sub-components; one which will match a VEVENT - based on start time, and organizer, and another that matches based - on LOCATION. A target component will pass the test if it matched - either of the sub-components. - - */ - - -int icalstore_test_recurse(icalcomponent* comp, icalcomponent* gauge) -{ - int pass = 1,localpass = 0; - icalproperty *p; - icalcomponent *child,*subgauge; - icalcomponent_kind gaugekind, compkind; - - icalerror_check_arg_rz( (comp!=0), "comp"); - icalerror_check_arg_rz( (gauge!=0), "gauge"); - - gaugekind = icalcomponent_isa(gauge); - compkind = icalcomponent_isa(comp); - - if( ! (gaugekind == compkind || gaugekind == ICAL_ANY_COMPONENT) ){ - return 0; - } - - /* Test properties. For each property in the gauge, search through - the component for a similar property. If one is found, compare - the two properties value with the comparison specified in the - gauge with the X-LIC-COMPARETYPE parameter */ - - for(p = icalcomponent_get_first_property(gauge,ICAL_ANY_PROPERTY); - p != 0; - p = icalcomponent_get_next_property(gauge,ICAL_ANY_PROPERTY)){ - - icalproperty* targetprop; - icalparameter* compareparam; - icalparameter_xliccomparetype compare; - int rel; /* The relationship between the gauge and target values.*/ - - /* Extract the comparison type from the gauge. If there is no - comparison type, assume that it is "EQUAL" */ - - compareparam = icalproperty_get_first_parameter( - p, - ICAL_XLICCOMPARETYPE_PARAMETER); - - if (compareparam!=0){ - compare = icalparameter_get_xliccomparetype(compareparam); - } else { - compare = ICAL_XLICCOMPARETYPE_EQUAL; - } - - /* Find a property in the component that has the same type - as the gauge property. HACK -- multiples of a single - property type in the gauge will match only the first - instance in the component */ - - targetprop = icalcomponent_get_first_property(comp, - icalproperty_isa(p)); - - if(targetprop != 0){ - - /* Compare the values of the gauge property and the target - property */ - - rel = icalvalue_compare(icalproperty_get_value(p), - icalproperty_get_value(targetprop)); - - /* Now see if the comparison is equavalent to the comparison - specified in the gauge */ - - if (rel == compare){ - localpass++; - } else if (compare == ICAL_XLICCOMPARETYPE_LESSEQUAL && - ( rel == ICAL_XLICCOMPARETYPE_LESS || - rel == ICAL_XLICCOMPARETYPE_EQUAL)) { - localpass++; - } else if (compare == ICAL_XLICCOMPARETYPE_GREATEREQUAL && - ( rel == ICAL_XLICCOMPARETYPE_GREATER || - rel == ICAL_XLICCOMPARETYPE_EQUAL)) { - localpass++; - } else if (compare == ICAL_XLICCOMPARETYPE_NOTEQUAL && - ( rel == ICAL_XLICCOMPARETYPE_GREATER || - rel == ICAL_XLICCOMPARETYPE_LESS)) { - localpass++; - } else { - localpass = 0; - } - - pass = pass && (localpass>0); - } - } - - /* Test subcomponents. Look for a child component that has a - counterpart in the gauge. If one is found, recursively call - icalstore_test */ - - for(subgauge = icalcomponent_get_first_component(gauge,ICAL_ANY_COMPONENT); - subgauge != 0; - subgauge = icalcomponent_get_next_component(gauge,ICAL_ANY_COMPONENT)){ - - gaugekind = icalcomponent_isa(subgauge); - - if (gaugekind == ICAL_ANY_COMPONENT){ - child = icalcomponent_get_first_component(comp,ICAL_ANY_COMPONENT); - } else { - child = icalcomponent_get_first_component(comp,gaugekind); - } - - if(child !=0){ - localpass = icalstore_test_recurse(child,subgauge); - pass = pass && localpass; - } else { - pass = 0; - } - } - - return pass; -} - -/* guagecontainer is an XROOT component that holds several gauges. The - results of comparing against these gauges are ORed together in this - routine */ -int icalstore_test(icalcomponent* comp, icalcomponent* gaugecontainer) -{ - int pass = 0; - icalcomponent *gauge; - - icalerror_check_arg_rz( (comp!=0), "comp"); - icalerror_check_arg_rz( (gauge!=0), "gauge"); - - for(gauge = icalcomponent_get_first_component(gaugecontainer,ICAL_ANY_COMPONENT); - gauge != 0; - gauge = icalcomponent_get_next_component(gaugecontainer,ICAL_ANY_COMPONENT)){ - - pass += icalstore_test_recurse(comp, gauge); - } - - return pass>0; - -} - -icalcomponent* icalstore_query(icalstore* store, icalstore* query); - - -icalcomponent* icalstore_fetch(icalstore* store, char* uid) -{ - icalcomponent *gauge; - icalcomponent *old_gauge; - icalcomponent *c; - struct icalstore_impl *impl = (struct icalstore_impl*)store; - - icalerror_check_arg_rz( (store!=0), "store"); - icalerror_check_arg_rz( (uid!=0), "uid"); - - gauge = - icalcomponent_vanew( - ICAL_VCALENDAR_COMPONENT, - icalcomponent_vanew( - ICAL_VEVENT_COMPONENT, - icalproperty_vanew_uid( - uid, - icalparameter_new_xliccomparetype( - ICAL_XLICCOMPARETYPE_EQUAL), - 0), - 0), - 0); - - old_gauge = impl->gauge; - impl->gauge = gauge; - - c= icalstore_get_first_component(store); - - impl->gauge = old_gauge; - - icalcomponent_free(gauge); - - return c; -} - - -int icalstore_has_uid(icalstore* store, char* uid) -{ - icalcomponent *c; - - icalerror_check_arg_rz( (store!=0), "store"); - icalerror_check_arg_rz( (uid!=0), "uid"); - - /* HACK. This is a temporary implementation. _has_uid should use a - database, and _fetch should use _has_uid, not the other way - around */ - c = icalstore_fetch(store,uid); - - return c!=0; - -} - - -icalerrorenum icalstore_select(icalstore* store, icalcomponent* gauge) -{ - struct icalstore_impl *impl = (struct icalstore_impl*)store; - - icalerror_check_arg_re( (store!=0), "store",ICAL_BADARG_ERROR); - icalerror_check_arg_re( (gauge!=0), "gauge",ICAL_BADARG_ERROR); - - if (!icalcomponent_is_valid(gauge)){ - return ICAL_BADARG_ERROR; - } - - impl->gauge = gauge; - - return ICAL_NO_ERROR; -} - - - -icalcomponent* icalstore_get_first_component(icalstore* store) -{ - struct icalstore_impl *impl = (struct icalstore_impl*)store; - icalerrorenum error; - char path[PATH_MAX]; - - error = icalstore_read_directory(impl); - - if (error != ICAL_NO_ERROR){ - icalerror_set_errno(error); - return 0; - } - - impl->directory_iterator = pvl_head(impl->directory); - - if (impl->directory_iterator == 0){ - icalerror_set_errno(error); - return 0; - } - - sprintf(path,"%s/%s",impl->dir,(char*)pvl_data(impl->directory_iterator)); - - /* If the next cluster we need is different than the current cluster, - delete the current one and get a new one */ - - if(impl->cluster != 0 && strcmp(path,icalcluster_path(impl->cluster)) != 0 ){ - icalcluster_free(impl->cluster); - impl->cluster = 0; - } - - if (impl->cluster == 0){ - impl->cluster = icalcluster_new(path); - - if (impl->cluster == 0){ - error = icalerrno; - } - } - - if (error != ICAL_NO_ERROR){ - icalerror_set_errno(error); - return 0; - } - - impl->first_component = 1; - - return icalstore_get_next_component(store); -} - -icalcomponent* icalstore_get_next_component(icalstore* store) -{ - struct icalstore_impl *impl; - icalcomponent *c; - icalerrorenum error; - - icalerror_check_arg_rz( (store!=0), "store"); - - impl = (struct icalstore_impl*)store; - - if(impl->cluster == 0){ - - icalerror_warn("icalstore_get_next_component called with a NULL cluster (Caller must call icalstore_get_first_component first"); - icalerror_set_errno(ICAL_USAGE_ERROR); - return 0; - - } - - /* Set the component iterator for the following for loop */ - if (impl->first_component == 1){ - icalcluster_get_first_component( - impl->cluster, - ICAL_ANY_COMPONENT); - impl->first_component = 0; - } else { - icalcluster_get_next_component( - impl->cluster, - ICAL_ANY_COMPONENT); - } - - - while(1){ - /* Iterate through all of the objects in the cluster*/ - for( c = icalcluster_get_current_component( - impl->cluster); - c != 0; - c = icalcluster_get_next_component( - impl->cluster, - ICAL_ANY_COMPONENT)){ - - /* If there is a gauge defined and the component does not - pass the gauge, skip the rest of the loop */ - if (impl->gauge != 0 && icalstore_test(c,impl->gauge) == 0){ - continue; - } - - /* Either there is no gauge, or the component passed the - gauge, so return it*/ - - return c; - } - - /* Fell through the loop, so the component we want is not - in this cluster. Load a new cluster and try again.*/ - - error = icalstore_next_cluster(store); - - if(impl->cluster == 0 || error != ICAL_NO_ERROR){ - /* No more clusters */ - return 0; - } else { - c = icalcluster_get_first_component( - impl->cluster, - ICAL_ANY_COMPONENT); - } - } -} - - - - - - - |