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store new UIDVALIDITY immediately after initializing it

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This commit is contained in:
Oswald Buddenhagen 2004-05-23 16:39:24 +00:00
parent 918e105b0c
commit b8b4628197
1 changed files with 89 additions and 70 deletions
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155
src/drv_maildir.c
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@ -273,6 +273,82 @@ maildir_validate( const char *prefix, const char *box, int create )
return DRV_OK; return DRV_OK;
} }
#ifdef USE_DB
static void
make_key( DBT *tkey, char *name )
{
char *u = strpbrk( name, ":," );
tkey->data = name;
tkey->size = u ? (size_t)(u - name) : strlen( name );
}
static int
maildir_set_uid( maildir_store_t *ctx, const char *name, int *uid )
{
int ret, uv[2];
if (uid)
*uid = ++ctx->nuid;
key.data = (void *)"UIDVALIDITY";
key.size = 11;
uv[0] = ctx->gen.uidvalidity;
uv[1] = ctx->nuid;
value.data = uv;
value.size = sizeof(uv);
if ((ret = ctx->db->put( ctx->db, 0, &key, &value, 0 ))) {
tbork:
ctx->db->err( ctx->db, ret, "Maildir error: db->put()" );
bork:
ctx->db->close( ctx->db, 0 );
ctx->db = 0;
return DRV_BOX_BAD;
}
if (uid) {
make_key( &key, (char *)name );
value.data = uid;
value.size = sizeof(*uid);
if ((ret = ctx->db->put( ctx->db, 0, &key, &value, 0 )))
goto tbork;
}
if ((ret = ctx->db->sync( ctx->db, 0 ))) {
ctx->db->err( ctx->db, ret, "Maildir error: db->sync()" );
goto bork;
}
return DRV_OK;
}
#endif /* USE_DB */
static int
maildir_store_uid( maildir_store_t *ctx )
{
int n;
char buf[128];
n = sprintf( buf, "%d\n%d\n", ctx->gen.uidvalidity, ctx->nuid );
lseek( ctx->uvfd, 0, SEEK_SET );
if (write( ctx->uvfd, buf, n ) != n || ftruncate( ctx->uvfd, n )) {
fprintf( stderr, "Maildir error: cannot write UIDVALIDITY.\n" );
return DRV_BOX_BAD;
}
return DRV_OK;
}
static int
maildir_init_uid( maildir_store_t *ctx, const char *msg )
{
info( "Maildir notice: %s.\n", msg ? msg : "cannot read UIDVALIDITY, creating new" );
ctx->gen.uidvalidity = time( 0 );
ctx->nuid = 0;
ctx->uvok = 0;
#ifdef USE_DB
if (ctx->db) {
ctx->db->truncate( ctx->db, 0, 0 /* &u_int32_t_dummy */, 0 );
return maildir_set_uid( ctx, 0, 0 );
}
#endif /* USE_DB */
return maildir_store_uid( ctx );
}
static int static int
maildir_uidval_lock( maildir_store_t *ctx ) maildir_uidval_lock( maildir_store_t *ctx )
{ {
@ -297,10 +373,7 @@ maildir_uidval_lock( maildir_store_t *ctx )
lseek( ctx->uvfd, 0, SEEK_SET ); lseek( ctx->uvfd, 0, SEEK_SET );
if ((n = read( ctx->uvfd, buf, sizeof(buf) )) <= 0 || if ((n = read( ctx->uvfd, buf, sizeof(buf) )) <= 0 ||
(buf[n] = 0, sscanf( buf, "%d\n%d", &ctx->gen.uidvalidity, &ctx->nuid ) != 2)) { (buf[n] = 0, sscanf( buf, "%d\n%d", &ctx->gen.uidvalidity, &ctx->nuid ) != 2)) {
info( "Maildir notice: cannot read UIDVALIDITY, creating new.\n" ); return maildir_init_uid( ctx, 0 );
ctx->gen.uidvalidity = time( 0 );
ctx->nuid = 0;
ctx->uvok = 0;
} else } else
ctx->uvok = 1; ctx->uvok = 1;
return DRV_OK; return DRV_OK;
@ -318,61 +391,10 @@ maildir_uidval_unlock( maildir_store_t *ctx )
static int static int
maildir_obtain_uid( maildir_store_t *ctx, int *uid ) maildir_obtain_uid( maildir_store_t *ctx, int *uid )
{ {
int n;
char buf[128];
*uid = ++ctx->nuid; *uid = ++ctx->nuid;
n = sprintf( buf, "%d\n%d\n", ctx->gen.uidvalidity, ctx->nuid ); return maildir_store_uid( ctx );
lseek( ctx->uvfd, 0, SEEK_SET );
if (write( ctx->uvfd, buf, n ) != n || ftruncate( ctx->uvfd, n )) {
fprintf( stderr, "Maildir error: cannot write UIDVALIDITY.\n" );
return DRV_BOX_BAD;
}
return DRV_OK;
} }
#ifdef USE_DB
static void
make_key( DBT *tkey, char *name )
{
char *u = strpbrk( name, ":," );
tkey->data = name;
tkey->size = u ? (size_t)(u - name) : strlen( name );
}
static int
maildir_set_uid( maildir_store_t *ctx, const char *name, int *uid )
{
int ret, uv[2];
*uid = ++ctx->nuid;
key.data = (void *)"UIDVALIDITY";
key.size = 11;
uv[0] = ctx->gen.uidvalidity;
uv[1] = ctx->nuid;
value.data = uv;
value.size = sizeof(uv);
if ((ret = ctx->db->put( ctx->db, 0, &key, &value, 0 ))) {
tbork:
ctx->db->err( ctx->db, ret, "Maildir error: db->put()" );
bork:
ctx->db->close( ctx->db, 0 );
ctx->db = 0;
return DRV_BOX_BAD;
}
make_key( &key, (char *)name );
value.data = uid;
value.size = sizeof(*uid);
if ((ret = ctx->db->put( ctx->db, 0, &key, &value, 0 )))
goto tbork;
if ((ret = ctx->db->sync( ctx->db, 0 ))) {
ctx->db->err( ctx->db, ret, "Maildir error: db->sync()" );
goto bork;
}
return DRV_OK;
}
#endif /* USE_DB */
static int static int
maildir_compare( const void *l, const void *r ) maildir_compare( const void *l, const void *r )
{ {
@ -578,14 +600,10 @@ maildir_scan( maildir_store_t *ctx, msglist_t *msglist )
entry = &msglist->ents[i]; entry = &msglist->ents[i];
if (entry->uid != INT_MAX) { if (entry->uid != INT_MAX) {
if (uid == entry->uid) { if (uid == entry->uid) {
info( "Maildir notice: duplicate UID; changing UIDVALIDITY.\n" ); if ((ret = maildir_init_uid( ctx, "duplicate UID; changing UIDVALIDITY" )) != DRV_OK) {
ctx->gen.uidvalidity = time( 0 ); maildir_free_scan( msglist );
ctx->nuid = 0; return ret;
ctx->uvok = 0; }
#ifdef USE_DB
if (ctx->db)
ctx->db->truncate( ctx->db, 0, 0 /* &u_int32_t_dummy */, 0 );
#endif /* USE_DB */
maildir_free_scan( msglist ); maildir_free_scan( msglist );
goto again; goto again;
} }
@ -641,6 +659,7 @@ maildir_scan( maildir_store_t *ctx, msglist_t *msglist )
entry->size = st.st_size; entry->size = st.st_size;
} }
} }
ctx->uvok = 1;
} }
#ifdef USE_DB #ifdef USE_DB
if (!ctx->db) if (!ctx->db)
@ -768,10 +787,8 @@ maildir_select( store_t *gctx, int minuid, int maxuid, int *excs, int nexcs )
ctx->db->err( ctx->db, ret, "Maildir error: db->get()" ); ctx->db->err( ctx->db, ret, "Maildir error: db->get()" );
goto dbork; goto dbork;
} }
info( "Maildir notice: cannot read UIDVALIDITY, creating new.\n" ); if (maildir_init_uid( ctx, 0 ) != DRV_OK)
ctx->gen.uidvalidity = time( 0 ); goto dbork;
ctx->nuid = 0;
ctx->uvok = 0;
} else { } else {
ctx->gen.uidvalidity = ((int *)value.data)[0]; ctx->gen.uidvalidity = ((int *)value.data)[0];
ctx->nuid = ((int *)value.data)[1]; ctx->nuid = ((int *)value.data)[1];
@ -1049,9 +1066,11 @@ maildir_trash_msg( store_t *gctx, message_t *gmsg )
return ret; return ret;
if (!rename( buf, nbuf )) if (!rename( buf, nbuf ))
break; break;
if (errno != ENOENT) {
perror( nbuf ); perror( nbuf );
return DRV_BOX_BAD; return DRV_BOX_BAD;
} }
}
if ((ret = maildir_again( ctx, msg, buf )) != DRV_OK) if ((ret = maildir_again( ctx, msg, buf )) != DRV_OK)
return ret; return ret;
} }