//----------------------------------------------------------------------
nsresult GlobalPrinters::InitializeGlobalPrinters ()
{
if (PrintersAreAllocated())
return NS_OK;
mGlobalNumPrinters = 0;
#ifdef USE_POSTSCRIPT
mGlobalPrinterList = new nsStringArray();
if (!mGlobalPrinterList)
return NS_ERROR_OUT_OF_MEMORY;
/* add an entry for the default printer (see nsPostScriptObj.cpp) */
mGlobalPrinterList->AppendString(
nsString(NS_ConvertASCIItoUCS2(NS_POSTSCRIPT_DRIVER_NAME "default")));
mGlobalNumPrinters++;
/* get the list of printers */
char *printerList = nsnull;
/* the env var MOZILLA_PRINTER_LIST can "override" the prefs */
printerList = PR_GetEnv("MOZILLA_PRINTER_LIST");
if (!printerList) {
nsresult rv;
nsCOMPtr<nsIPref> pPrefs = do_GetService(NS_PREF_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
(void) pPrefs->CopyCharPref("print.printer_list", &printerList);
}
}
if (printerList) {
char *tok_lasts;
char *name;
/* PL_strtok_r() will modify the string - copy it! */
printerList = strdup(printerList);
if (!printerList)
return NS_ERROR_OUT_OF_MEMORY;
for( name = PL_strtok_r(printerList, " ", &tok_lasts) ;
name != nsnull ;
name = PL_strtok_r(nsnull, " ", &tok_lasts) )
{
mGlobalPrinterList->AppendString(
nsString(NS_ConvertASCIItoUCS2(NS_POSTSCRIPT_DRIVER_NAME)) +
nsString(NS_ConvertASCIItoUCS2(name)));
mGlobalNumPrinters++;
}
free(printerList);
}
#endif /* USE_POSTSCRIPT */
if (mGlobalNumPrinters == 0)
return NS_ERROR_GFX_PRINTER_NO_PRINTER_AVAILABLE;
return NS_OK;
}
/**
aPref is a long string, which holds an exhaustive list of allowed tags
and attributes. All other tags and attributes will be removed.
aPref has the format
"html head body ul ol li a(href,name,title) img(src,alt,title) #text"
i.e.
- tags are separated by whitespace
- the attribute list follows the tag directly in brackets
- the attributes are separated by commas.
There is no way to express further restrictions, like "no text inside the
<head> element". This is so to considerably reduce the complexity of the
pref and this implementation.
Update: Akk told me that I might be able to use DTD classes. Later(TM)...
*/
nsresult
mozSanitizingHTMLSerializer::ParsePrefs(const nsAString& aPref)
{
char* pref = ToNewCString(aPref);
char* tags_lasts;
for (char* iTag = PL_strtok_r(pref, " ", &tags_lasts);
iTag;
iTag = PL_strtok_r(NULL, " ", &tags_lasts))
{
ParseTagPref(nsCAutoString(iTag));
}
delete[] pref;
return NS_OK;
}
/**
* Parses string of format "n1=v1&n2=v2..."
* into a ConfigStore.
*/
ConfigStore *ConfigStore::Parse(const char *s, const char *separator)
{
char *pair;
char *line = NULL;
int i;
int len;
char *lasts = NULL;
if (s == NULL)
return NULL;
ConfigStoreRoot *root = new ConfigStoreRoot();
ConfigStore *set= new ConfigStore(root,"");
line = PL_strdup(s);
pair = PL_strtok_r(line, separator, &lasts);
while (pair != NULL) {
len = strlen(pair);
i = 0;
while (1) {
if (i >= len) {
goto skip;
}
if (pair[i] == '\0') {
goto skip;
}
if (pair[i] == '=') {
pair[i] = '\0';
break;
}
i++;
}
set->Add(&pair[0], &pair[i+1]);
skip:
pair = PL_strtok_r(NULL, separator, &lasts);
}
if( line != NULL ) {
PL_strfree( line );
line = NULL;
}
return set;
}
/**
Parses e.g. "a(href,title)" (but not several tags at once).
*/
nsresult
mozSanitizingHTMLSerializer::ParseTagPref(const nsCAutoString& tagpref)
{
nsIParserService* parserService = nsContentUtils::GetParserService();
if (!parserService)
return NS_ERROR_OUT_OF_MEMORY;
// Parsing tag
PRInt32 bracket = tagpref.FindChar('(');
if (bracket == 0)
{
printf(" malformed pref: %s\n", tagpref.get());
return NS_ERROR_CANNOT_CONVERT_DATA;
}
nsAutoString tag;
CopyUTF8toUTF16(StringHead(tagpref, bracket), tag);
// Create key
PRInt32 tag_id = parserService->HTMLStringTagToId(tag);
if (tag_id == eHTMLTag_userdefined)
{
printf(" unknown tag <%s>, won't add.\n",
NS_ConvertUTF16toUTF8(tag).get());
return NS_ERROR_CANNOT_CONVERT_DATA;
}
nsPRUint32Key tag_key(tag_id);
if (mAllowedTags.Exists(&tag_key))
{
printf(" duplicate tag: %s\n", NS_ConvertUTF16toUTF8(tag).get());
return NS_ERROR_CANNOT_CONVERT_DATA;
}
if (bracket == kNotFound)
/* There are no attributes in the pref. So, allow none; only the tag
itself */
{
mAllowedTags.Put(&tag_key, 0);
}
else
{
// Attributes
// where is the macro for non-fatal errors in opt builds?
if(tagpref[tagpref.Length() - 1] != ')' ||
tagpref.Length() < PRUint32(bracket) + 3)
{
printf(" malformed pref: %s\n", tagpref.get());
return NS_ERROR_CANNOT_CONVERT_DATA;
}
nsCOMPtr<nsIProperties> attr_bag =
do_CreateInstance(NS_PROPERTIES_CONTRACTID);
NS_ENSURE_TRUE(attr_bag, NS_ERROR_INVALID_POINTER);
nsCAutoString attrList;
attrList.Append(Substring(tagpref,
bracket + 1,
tagpref.Length() - 2 - bracket));
char* attrs_lasts;
for (char* iAttr = PL_strtok_r(attrList.BeginWriting(),
",", &attrs_lasts);
iAttr;
iAttr = PL_strtok_r(NULL, ",", &attrs_lasts))
{
attr_bag->Set(iAttr, 0);
}
nsIProperties* attr_bag_raw = attr_bag;
NS_ADDREF(attr_bag_raw);
mAllowedTags.Put(&tag_key, attr_bag_raw);
}
return NS_OK;
}
