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fully decompose NAMESPACE response early on

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that way the code becomes clearer, and we don't keep useless nodes in
memory.
This commit is contained in:
Oswald Buddenhagen 2019-11-11 13:41:32 +01:00
parent 6fd4e8de24
commit 7af7354dbc
1 changed files with 34 additions and 39 deletions
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71
src/drv_imap.c
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@ -108,7 +108,7 @@ struct imap_store {
uint got_namespace:1;
uint has_forwarded:1;
char delimiter[2]; /* hierarchy delimiter */
list_t *ns_personal; /* NAMESPACE info */
char *ns_prefix, ns_delimiter; /* NAMESPACE info */
string_list_t *boxes; // _list results
char listed; // was _list already run with these flags?
// note that the message counts do _not_ reflect stats from msgs,
@ -901,35 +901,38 @@ parse_list( imap_store_t *ctx, char *s, int (*cb)( imap_store_t *ctx, list_t *li
static int parse_namespace_rsp_p2( imap_store_t *, list_t *, char * );
static int parse_namespace_rsp_p3( imap_store_t *, list_t *, char * );
static int
parse_namespace_check( list_t *list )
{
if (!list)
goto bad;
if (list->val == NIL)
return 0;
if (list->val != LIST)
goto bad;
for (list = list->child; list; list = list->next) {
if (list->val != LIST)
goto bad;
if (!is_atom( list->child ))
goto bad;
if (!is_opt_atom( list->child->next ))
goto bad;
/* Namespace response extensions may follow here; we don't care. */
}
return 0;
bad:
error( "IMAP error: malformed NAMESPACE response\n" );
return -1;
}
static int
parse_namespace_rsp( imap_store_t *ctx, list_t *list, char *s )
{
if (parse_namespace_check( (ctx->ns_personal = list) ))
// We use only the 1st personal namespace. Making this configurable
// would not add value over just specifying Path.
if (!list) {
bad:
error( "IMAP error: malformed NAMESPACE response\n" );
free_list( list );
return LIST_BAD;
}
if (list->val != NIL) {
if (list->val != LIST)
goto bad;
list_t *nsp_1st = list->child;
if (nsp_1st->val != LIST)
goto bad;
list_t *nsp_1st_ns = nsp_1st->child;
if (!is_atom( nsp_1st_ns ))
goto bad;
ctx->ns_prefix = nsp_1st_ns->val;
nsp_1st_ns->val = NULL;
list_t *nsp_1st_dl = nsp_1st_ns->next;
if (!is_opt_atom( nsp_1st_dl ))
goto bad;
if (is_atom( nsp_1st_dl ))
ctx->ns_delimiter = nsp_1st_dl->val[0];
// Namespace response extensions may follow here; we don't care.
}
free_list( list );
return parse_list( ctx, s, parse_namespace_rsp_p2 );
}
@ -1608,7 +1611,7 @@ imap_cancel_store( store_t *gctx )
socket_close( &ctx->conn );
cancel_sent_imap_cmds( ctx );
cancel_pending_imap_cmds( ctx );
free_list( ctx->ns_personal );
free( ctx->ns_prefix );
free_string_list( ctx->auth_mechs );
free_generic_messages( ctx->msgs );
free_string_list( ctx->boxes );
@ -2335,19 +2338,11 @@ static void
imap_open_store_namespace2( imap_store_t *ctx )
{
imap_store_conf_t *cfg = (imap_store_conf_t *)ctx->gen.conf;
list_t *nsp, *nsp_1st;
/* XXX for now assume 1st personal namespace */
if (is_list( (nsp = ctx->ns_personal) ) &&
is_list( (nsp_1st = nsp->child) ))
{
list_t *nsp_1st_ns = nsp_1st->child;
list_t *nsp_1st_dl = nsp_1st_ns->next;
if (!ctx->prefix && cfg->use_namespace)
ctx->prefix = nsp_1st_ns->val;
if (!ctx->delimiter[0] && is_atom( nsp_1st_dl ))
ctx->delimiter[0] = nsp_1st_dl->val[0];
}
ctx->prefix = ctx->ns_prefix;
if (!ctx->delimiter[0])
ctx->delimiter[0] = ctx->ns_delimiter;
imap_open_store_finalize( ctx );
}