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i18n: filter LANG/LC_LANG for valid characters, and handle @ 

If there are more valid characters, add them in, I did not find
an actual list.
This commit is contained in:
moneromooo-monero 2019-01-07 16:04:45 +00:00
parent 42abea7f72
commit 584126d15b
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1 changed files with 14 additions and 0 deletions
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14
src/common/i18n.cpp
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@ -38,6 +38,8 @@
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "i18n"
#define MAX_LANGUAGE_SIZE 16
static const unsigned char qm_magic[16] = {0x3c, 0xb8, 0x64, 0x18, 0xca, 0xef, 0x9c, 0x95, 0xcd, 0x21, 0x1c, 0xbf, 0x60, 0xa1, 0xbd, 0xdd};
static std::map<std::string,std::string> i18n_entries;
@ -62,7 +64,19 @@ std::string i18n_get_language()
std::string language = e;
language = language.substr(0, language.find("."));
language = language.substr(0, language.find("@"));
// check valid values
for (char c: language)
if (!strchr("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-.@", c))
return "en";
std::transform(language.begin(), language.end(), language.begin(), tolower);
if (language.size() > MAX_LANGUAGE_SIZE)
{
i18n_log("Language from LANG/LC_ALL suspiciously long, defaulting to en");
return "en";
}
return language;
}