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-rw-r--r--libical/src/libicalss/icalcluster.c423
1 files changed, 0 insertions, 423 deletions
diff --git a/libical/src/libicalss/icalcluster.c b/libical/src/libicalss/icalcluster.c
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--- a/libical/src/libicalss/icalcluster.c
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-/* -*- Mode: C -*-
- ======================================================================
- FILE: icalcluster.c
- CREATOR: eric 23 December 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
-
-
- ======================================================================*/
-
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-
-#include "icalcluster.h"
-#include <errno.h>
-#include <limits.h> /* For PATH_MAX */
-#include <sys/stat.h> /* for stat */
-#include <unistd.h> /* for stat, getpid */
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h> /* for fcntl */
-#include <unistd.h> /* for fcntl */
-
-icalerrorenum icalcluster_create_cluster(char *path);
-
-struct icalcluster_impl {
- char *path;
- icalcomponent* cluster;
- int changed;
- FILE* stream;
-};
-
-icalcluster* icalcluster_new_impl()
-{
- struct icalcluster_impl* comp;
-
- if ( ( comp = (struct icalcluster_impl*)
- malloc(sizeof(struct icalcluster_impl))) == 0) {
- icalerror_set_errno(ICAL_NEWFAILED_ERROR);
- errno = ENOMEM;
- return 0;
- }
-
- return comp;
-}
-
-char* read_from_file(char *s, size_t size, void *d)
-{
- char *c = fgets(s,size, (FILE*)d);
- return c;
-}
-
-icalcluster* icalcluster_new(char* path)
-{
- struct icalcluster_impl *impl = icalcluster_new_impl();
- struct stat sbuf;
- int createclusterfile = 0;
- icalerrorenum error = ICAL_NO_ERROR;
- icalparser *parser;
- struct icaltimetype tt;
- off_t cluster_file_size;
-
- memset(&tt,0,sizeof(struct icaltimetype));
-
- icalerror_clear_errno();
- icalerror_check_arg_rz( (path!=0), "path");
-
- if (impl == 0){
- return 0;
- }
-
- /*impl->path = strdup(path); icalcluster_load does this */
- impl->changed = 0;
-
- impl->cluster = 0;
-
- impl->path = 0;
- impl->stream = 0;
-
- /* Check if the path already exists and if it is a regular file*/
- if (stat(path,&sbuf) != 0){
-
- /* A file by the given name does not exist, or there was
- another error */
- cluster_file_size = 0;
- if (errno == ENOENT) {
- /* It was because the file does not exist */
- createclusterfile = 1;
- } else {
- /* It was because of another error */
- icalerror_set_errno(ICAL_FILE_ERROR);
- return 0;
- }
- } else {
- /* A file by the given name exists, but is it a regular file */
-
- if (!S_ISREG(sbuf.st_mode)){
- /* Nope, not a directory */
- icalerror_set_errno(ICAL_FILE_ERROR);
- return 0;
- } else {
- /* Lets assume that it is a file of the right type */
- cluster_file_size = sbuf.st_size;
- createclusterfile = 0;
- }
- }
-
- /* if cluster does not already exist, create it */
-
- if (createclusterfile == 1) {
- error = icalcluster_create_cluster(path);
-
- if (error != ICAL_NO_ERROR){
- icalerror_set_errno(error);
- return 0;
- }
- }
-
- impl->path = (char*)strdup(path);
-
- errno = 0;
- impl->stream = fopen(impl->path,"r");
-
- if (impl->stream ==0 || errno != 0){
- impl->cluster = 0;
- icalerror_set_errno(ICAL_FILE_ERROR); /* Redundant, actually */
- return 0;
- }
-
- icalcluster_lock(impl);
-
- if(cluster_file_size > 0){
- parser = icalparser_new();
- icalparser_set_gen_data(parser,impl->stream);
- impl->cluster = icalparser_parse(parser,read_from_file);
- icalparser_free(parser);
-
- if (icalcomponent_isa(impl->cluster) != ICAL_XROOT_COMPONENT){
- /* The parser got a single component, so it did not put it in
- an XROOT. */
- icalcomponent *cl = impl->cluster;
- impl->cluster = icalcomponent_new(ICAL_XROOT_COMPONENT);
- icalcomponent_add_component(impl->cluster,cl);
- }
-
- } else {
-
- impl->cluster = icalcomponent_new(ICAL_XROOT_COMPONENT);
- }
-
- if (impl->cluster == 0){
- icalerror_set_errno(ICAL_PARSE_ERROR);
- return 0;
- }
-
- if (error != ICAL_NO_ERROR){
- return 0;
- }
-
- return impl;
-}
-
-void icalcluster_free(icalcluster* cluster)
-{
- struct icalcluster_impl *impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_rv((cluster!=0),"cluster");
-
- if (impl->cluster != 0){
- icalcluster_commit(cluster);
- icalcomponent_free(impl->cluster);
- impl->cluster=0;
- }
-
- if(impl->path != 0){
- free(impl->path);
- impl->path = 0;
- }
-
- if(impl->stream != 0){
- icalcluster_unlock(impl);
- fclose(impl->stream);
- impl->stream = 0;
- }
-
- free(impl);
-}
-
-char* icalcluster_path(icalcluster* cluster)
-{
- struct icalcluster_impl *impl = (struct icalcluster_impl*)cluster;
- icalerror_check_arg_rz((cluster!=0),"cluster");
-
- return impl->path;
-}
-
-
-int icalcluster_lock(icalcluster *cluster)
-{
- struct icalcluster_impl *impl = (struct icalcluster_impl*)cluster;
- struct flock lock;
- int fd;
-
- icalerror_check_arg_rz((impl->stream!=0),"impl->stream");
-
- fd = fileno(impl->stream);
-
- lock.l_type = F_WRLCK; /* F_RDLCK, F_WRLCK, F_UNLCK */
- lock.l_start = 0; /* byte offset relative to l_whence */
- lock.l_whence = SEEK_SET; /* SEEK_SET, SEEK_CUR, SEEK_END */
- lock.l_len = 0; /* #bytes (0 means to EOF) */
-
- return (fcntl(fd, F_SETLKW, &lock));
-}
-
-int icalcluster_unlock(icalcluster *cluster)
-{
- struct icalcluster_impl *impl = (struct icalcluster_impl*)cluster;
- int fd;
- struct flock lock;
- icalerror_check_arg_rz((impl->stream!=0),"impl->stream");
-
- fd = fileno(impl->stream);
-
- lock.l_type = F_WRLCK; /* F_RDLCK, F_WRLCK, F_UNLCK */
- lock.l_start = 0; /* byte offset relative to l_whence */
- lock.l_whence = SEEK_SET; /* SEEK_SET, SEEK_CUR, SEEK_END */
- lock.l_len = 0; /* #bytes (0 means to EOF) */
-
- return (fcntl(fd, F_UNLCK, &lock));
-
-}
-
-icalerrorenum icalcluster_create_cluster(char *path)
-{
-
- FILE* f;
- int r;
- icalcomponent *c;
-
- icalerror_clear_errno();
-
- f = fopen(path,"w");
-
- if (f == 0){
- icalerror_set_errno(ICAL_FILE_ERROR);
- return ICAL_FILE_ERROR;
- }
-
-
- /* This used to write data to the file... */
-
-
- fclose(f);
-
- return ICAL_NO_ERROR;
-}
-
-icalerrorenum icalcluster_commit(icalcluster* cluster)
-{
- FILE *f;
- char tmp[PATH_MAX]; /* HACK Buffer overflow potential */
- char *str;
- icalparser *parser;
- icalcomponent *c;
-
- struct icalcluster_impl *impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_re((impl!=0),"cluster",ICAL_BADARG_ERROR);
-
- if (impl->changed == 0 ){
- return ICAL_NO_ERROR;
- }
-
-#ifdef ICAL_SAFESAVES
- snprintf(tmp,PATH_MAX,"%s-tmp",impl->path);
-#else
- strcpy(tmp,impl->path);
-#endif
-
- if ( (f = fopen(tmp,"w")) < 0 ){
- icalerror_set_errno(ICAL_FILE_ERROR);
- return ICAL_FILE_ERROR;
- }
-
- for(c = icalcomponent_get_first_component(impl->cluster,ICAL_ANY_COMPONENT);
- c != 0;
- c = icalcomponent_get_next_component(impl->cluster,ICAL_ANY_COMPONENT)){
-
- str = icalcomponent_as_ical_string(c);
-
- if ( fwrite(str,sizeof(char),strlen(str),f) < strlen(str)){
- fclose(f);
- return ICAL_FILE_ERROR;
- }
- }
-
- fclose(f);
- impl->changed = 0;
-
-#ifdef ICAL_SAFESAVES
- rename(tmp,impl->path); /* HACK, should check for error here */
-#endif
-
- return ICAL_NO_ERROR;
-
-}
-
-void icalcluster_mark(icalcluster* cluster){
-
- struct icalcluster_impl *impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_rv((impl!=0),"cluster");
-
- impl->changed = 1;
-
-}
-
-icalcomponent* icalcluster_get_component(icalcluster* cluster){
- struct icalcluster_impl *impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_re((impl!=0),"cluster",ICAL_BADARG_ERROR);
-
- return impl->cluster;
-}
-
-
-/* manipulate the components in the cluster */
-
-icalerrorenum icalcluster_add_component(icalcluster *cluster,
- icalcomponent* child)
-{
- struct icalcluster_impl* impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_rv((cluster!=0),"cluster");
- icalerror_check_arg_rv((child!=0),"child");
-
- icalcomponent_add_component(impl->cluster,child);
-
- icalcluster_mark(cluster);
-
- return ICAL_NO_ERROR;
-
-}
-
-icalerrorenum icalcluster_remove_component(icalcluster *cluster,
- icalcomponent* child)
-{
- struct icalcluster_impl* impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_rv((cluster!=0),"cluster");
- icalerror_check_arg_rv((child!=0),"child");
-
- icalcomponent_remove_component(impl->cluster,child);
-
- icalcluster_mark(cluster);
-
- return ICAL_NO_ERROR;
-}
-
-int icalcluster_count_components(icalcluster *cluster,
- icalcomponent_kind kind)
-{
- struct icalcluster_impl* impl = (struct icalcluster_impl*)cluster;
-
- if(cluster == 0){
- icalerror_set_errno(ICAL_BADARG_ERROR);
- return -1;
- }
-
- return icalcomponent_count_components(impl->cluster,kind);
-}
-
-/* Iterate through components */
-icalcomponent* icalcluster_get_current_component (icalcluster* cluster)
-{
- struct icalcluster_impl* impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_rz((cluster!=0),"cluster");
-
- return icalcomponent_get_current_component(impl->cluster);
-}
-
-icalcomponent* icalcluster_get_first_component(icalcluster* cluster,
- icalcomponent_kind kind)
-{
- struct icalcluster_impl* impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_rz((cluster!=0),"cluster");
-
- return icalcomponent_get_first_component(impl->cluster,kind);
-}
-
-icalcomponent* icalcluster_get_next_component(icalcluster* cluster,
- icalcomponent_kind kind)
-{
- struct icalcluster_impl* impl = (struct icalcluster_impl*)cluster;
-
- icalerror_check_arg_rz((cluster!=0),"cluster");
-
- return icalcomponent_get_next_component(impl->cluster,kind);
-}
-
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