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authorMarkus Armbruster <armbru@redhat.com>2018-08-23 18:40:05 +0200
committerMarkus Armbruster <armbru@redhat.com>2018-08-24 20:26:37 +0200
commit2cbd15aa6f4d4694376dd0d231d56e572ac870c1 (patch)
tree80bffd7131ee398510fb7961dfc0cb2982bed852 /qobject/json-streamer.c
parent61030280ca2d67bd63cb068250aee55849cd38ca (diff)
downloadfocaccia-qemu-2cbd15aa6f4d4694376dd0d231d56e572ac870c1.tar.gz
focaccia-qemu-2cbd15aa6f4d4694376dd0d231d56e572ac870c1.zip
json: Treat unwanted interpolation as lexical error
The JSON parser optionally supports interpolation.  The lexer
recognizes interpolation tokens unconditionally.  The parser rejects
them when interpolation is disabled, in parse_interpolation().
However, it neglects to set an error then, which can make
json_parser_parse() fail without setting an error.

Move the check for unwanted interpolation from the parser's
parse_interpolation() into the lexer's finite state machine.  When
interpolation is disabled, '%' is now handled like any other
unexpected character.

The next commit will improve how such lexical errors are handled.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180823164025.12553-39-armbru@redhat.com>
Diffstat (limited to 'qobject/json-streamer.c')
-rw-r--r--qobject/json-streamer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c
index fa595a8761..a373e0114a 100644
--- a/qobject/json-streamer.c
+++ b/qobject/json-streamer.c
@@ -115,7 +115,7 @@ void json_message_parser_init(JSONMessageParser *parser,
     parser->tokens = g_queue_new();
     parser->token_size = 0;
 
-    json_lexer_init(&parser->lexer);
+    json_lexer_init(&parser->lexer, !!ap);
 }
 
 void json_message_parser_feed(JSONMessageParser *parser,