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Handle removeCommand in FormEngine correctly. (bug 441874, r=thunder)

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This commit is contained in:
Anant Narayanan 2008-06-25 17:09:18 -07:00
parent 4740979f77
commit b53674f5dc
1 changed files with 90 additions and 6 deletions
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96
services/sync/modules/engines/forms.js
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@ -11,6 +11,58 @@ Cu.import("resource://weave/syncCores.js");
Cu.import("resource://weave/stores.js");
Cu.import("resource://weave/trackers.js");
/*
* Generate GUID from a name,value pair.
* If the concatenated length is less than 40, we just Base64 the JSON.
* Otherwise, we Base64 the JSON of the name and SHA1 of the value.
* The first character of the key determines which method we used:
* '0' for full Base64, '1' for SHA-1'ed val.
*/
function _generateFormGUID(nam, val) {
var key;
var con = nam + val;
var jso = Cc["@mozilla.org/dom/json;1"].
createInstance(Ci.nsIJSON);
if (con.length <= 40) {
key = '0' + btoa(jso.encode([nam, val]));
} else {
val = Utils.sha1(val);
key = '1' + btoa(jso.encode([nam, val]));
}
return key;
}
/*
* Unwrap a name,value pair from a GUID.
* Return an array [sha1ed, name, value]
* sha1ed is a boolean determining if the value is SHA-1'ed or not.
*/
function _unwrapFormGUID(guid) {
var jso = Cc["@mozilla.org/dom/json;1"].
createInstance(Ci.nsIJSON);
var ret;
var dec = atob(guid.slice(1));
var obj = jso.decode(dec);
switch (guid[0]) {
case '0':
ret = [false, obj[0], obj[1]];
break;
case '1':
ret = [true, obj[0], obj[1]];
break;
default:
this._log.warn("Unexpected GUID header: " + guid[0] + ", aborting!");
return false;
}
return ret;
}
function FormEngine(pbeId) {
this._init(pbeId);
}
@ -71,7 +123,7 @@ FormSyncCore.prototype = {
while (stmnt.executeStep()) {
var nam = stmnt.getUTF8String(1);
var val = stmnt.getUTF8String(2);
var key = Utils.sha1(nam + val);
var key = _generateFormGUID(nam, val);
if (key == GUID)
found = true;
@ -115,18 +167,50 @@ FormStore.prototype = {
return this.__formHistory;
},
_getValueFromSHA1: function FormStore__getValueFromSHA1(name, sha) {
var query = "SELECT value FROM moz_formhistory WHERE fieldname = '" + name + "'";
var stmnt = this._formDB.createStatement(query);
var found = false;
while (stmnt.executeStep()) {
var val = stmnt.getUTF8String(0);
if (Utils.sha1(val) == sha) {
found = val;
break;
}
}
return found;
},
_createCommand: function FormStore__createCommand(command) {
this._log.info("FormStore got createCommand: " + command );
this._log.info("FormStore got createCommand: " + command);
this._formHistory.addEntry(command.data.name, command.data.value);
},
_removeCommand: function FormStore__removeCommand(command) {
this._log.info("FormStore got removeCommand: " + command );
this._formHistory.removeEntry(command.data.name, command.data.value);
this._log.info("FormStore got removeCommand: " + command);
var data = _unwrapFormGUID(command.GUID);
if (!data) {
this._log.warn("Invalid GUID found, ignoring remove request.");
return;
}
var nam = data[1];
var val = data[2];
if (data[0]) {
val = _getValueFromSHA1(nam, val);
}
if (val) {
this._formHistory.removeEntry(nam, val);
} else {
this._log.warn("Form value not found from GUID, ignoring remove request.");
}
},
_editCommand: function FormStore__editCommand(command) {
this._log.info("FormStore got editCommand: " + command );
this._log.info("FormStore got editCommand: " + command);
this._log.warn("Form syncs are expected to only be create/remove!");
},
@ -137,7 +221,7 @@ FormStore.prototype = {
while (stmnt.executeStep()) {
var nam = stmnt.getUTF8String(1);
var val = stmnt.getUTF8String(2);
var key = Utils.sha1(nam + val);
var key = _generateFormGUID(nam, val);
items[key] = { name: nam, value: val };
}