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syncnews.c
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syncnews.c
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/* syncnews.c -- program to synchronize active file with mailbox list
*
* (C) Copyright 1994 by Carnegie Mellon University
*
* All Rights Reserved
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of Carnegie
* Mellon University not be used in advertising or publicity
* pertaining to distribution of the software without specific,
* written prior permission. Carnegie Mellon University makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* 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.
*
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <syslog.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/stat.h>
#include <com_err.h>
#include "assert.h"
#include "config.h"
#include "xmalloc.h"
#include "sysexits.h"
#include "imap_err.h"
#include "mailbox.h"
extern int errno;
extern int optind;
extern char *optarg;
int code = 0;
int do_syncnews();
char **group = 0;
int *group_seen;
int group_num = 0;
int group_alloc = 0;
main(argc, argv)
int argc;
char **argv;
{
int opt;
config_init("syncnews");
if (geteuid() == 0) fatal("must run as the Cyrus user", EX_USAGE);
while ((opt = getopt(argc, argv, "")) != EOF) {
switch (opt) {
default:
usage();
}
}
if (!argv[optind] || argv[optind+1]) usage();
readactive(argv[optind]);
do_syncnews();
exit(code);
}
usage()
{
fprintf(stderr, "usage: syncnews active\n");
exit(EX_USAGE);
}
#define GROUPGROW 300
/*
* comparison function for qsort() of the group list
*/
compare_group(a, b)
char **a, **b;
{
return strcasecmp(*a, *b);
}
/*
* Read a news active file, building the group list
*/
readactive(active)
char *active;
{
FILE *active_file;
char buf[1024];
char *p;
char *newsprefix;
int newsprefixlen = 0;
int lineno = 0;
newsprefix = config_getstring("newsprefix", 0);
if (newsprefix) {
newsprefixlen = strlen(newsprefix);
if (newsprefix[newsprefixlen-1] == '.') {
newsprefixlen--;
}
}
active_file = fopen(active, "r");
if (!active_file) {
perror(active);
syslog(LOG_ERR, "cannot read active file %s: %m", active);
exit(EX_NOINPUT);
}
while (fgets(buf, sizeof(buf), active_file)) {
lineno++;
p = strchr(buf, ' '); /* end of group */
if (!p) goto badactive;
*p++ = '\0';
p = strchr(p, ' '); /* start of min */
if (!p) goto badactive;
p = strchr(p+1, ' ');
if (!p) goto badactive;
p++;
if (*p == 'y' || *p == 'm' || *p == 'n') {
/* Add group to list */
if (group_num == group_alloc) {
/* Grow arrary */
group_alloc += GROUPGROW;
group = (char **) xrealloc((char *)group,
group_alloc * sizeof(char *));
group_seen = (int *) xrealloc((char *)group_seen,
group_alloc * sizeof(int));
}
if (newsprefixlen) {
group[group_num] = xmalloc(strlen(buf)+newsprefixlen+2);
strcpy(group[group_num], newsprefix);
group[group_num][newsprefixlen] = '.';
strcpy(group[group_num]+newsprefixlen+1, buf);
}
else {
group[group_num] = strsave(buf);
}
group_seen[group_num] = 0;
group_num++;
}
}
if (ferror(active_file)) {
fprintf(stderr, "syncnews: error reading active file\n");
syslog(LOG_ERR, "error reading active file");
exit(EX_DATAERR);
}
fclose(active_file);
if (group_num == 0) {
fprintf(stderr, "syncnews: no groups in active file\n");
syslog(LOG_ERR, "no groups in active file");
exit(EX_DATAERR);
}
qsort(group, group_num, sizeof(char *), compare_group);
return;
badactive:
fprintf(stderr, "syncnews: bad line %d in active file\n", lineno);
syslog(LOG_ERR, "bad line %d in active file", lineno);
exit(EX_DATAERR);
}
/*
* Do the real work.
*/
do_syncnews()
{
int r;
int i;
/*
* call mboxlist_syncnews() to check our group list against
* the mailboxes file. mboxlist_syncnews() will remove any
* mailboxes that aren't in the group list.
*/
r = mboxlist_syncnews(group_num, group, group_seen);
if (r) {
com_err("syncnews: resynchronizing", r,
(r == IMAP_IOERROR) ? error_message(errno) : NULL);
code = convert_code(r);
return;
}
/*
* Go through the group list creating mailboxes for
* those groups which were not found in the mailboxes file.
*/
for (i = 0; i < group_num; i++) {
if (!group_seen[i]) {
r = mboxlist_createmailbox(group[i],
MAILBOX_FORMAT_NETNEWS, "news",
1, "anonymous");
if (r) {
fprintf(stderr, "syncnews: cannot creat %s: %s\n",
group[i], error_message(r));
syslog(LOG_ERR, "cannot create %s: %s",
group[i], error_message(r));
}
else {
printf("created %s\n", group[i]);
}
}
}
return;
}
int convert_code(r)
int r;
{
switch (r) {
case 0:
return 0;
case IMAP_IOERROR:
return EX_IOERR;
case IMAP_PERMISSION_DENIED:
return EX_NOPERM;
case IMAP_QUOTA_EXCEEDED:
return EX_TEMPFAIL;
case IMAP_MAILBOX_NOTSUPPORTED:
return EX_DATAERR;
case IMAP_MAILBOX_NONEXISTENT:
return EX_UNAVAILABLE;
}
/* Some error we're not expecting. */
return EX_SOFTWARE;
}
fatal(s, code)
char *s;
int code;
{
fprintf(stderr, "syncnews: %s\n", s);
exit(code);
}

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