void readRelocations(
FILE* relocFile,
std::set<TCA>* liveStubs,
void (*callback)(TransRelocInfo&& tri, void* data),
void* data) {
std::string line;
uint64_t addr;
uint64_t end;
while (readLine(line, relocFile)) {
int n;
if (sscanf(line.c_str(), "%" SCNx64 " %" SCNx64 "%n",
&addr, &end, &n) >= 2) {
auto pos = line.rfind(' ');
if (pos == n) {
if (liveStubs && !end) {
if (!strcmp("NewStub", line.c_str() + pos + 1)) {
liveStubs->insert((TCA)addr);
} else if (!strcmp("FreeStub", line.c_str() + pos + 1)) {
liveStubs->erase((TCA)addr);
}
}
continue;
}
assert(pos != std::string::npos && pos > n);
auto b64 = line.substr(pos + 1);
String decoded = string_base64_decode(b64.c_str(), b64.size(), true);
BlobDecoder blob(decoded.data(), decoded.size());
TransRelocInfoHelper trih;
blob(trih);
TransRelocInfo tri(trih.toTRI(code()));
tri.start = reinterpret_cast<TCA>(addr);
tri.end = reinterpret_cast<TCA>(end);
x64::findFixups(tri.start, tri.end, tri.fixups);
callback(std::move(tri), data);
}
}
}
String StringUtil::Base64Decode(CStrRef input, bool strict /* = false */) {
int len = input.size();
char *ret = string_base64_decode(input.data(), len, strict);
return String(ret, len, AttachString);
}
String StringUtil::Base64Decode(const String& input,
bool strict /* = false */) {
int len = input.size();
return string_base64_decode(input.data(), len, strict);
}
File* DataStreamWrapper::open(const String& filename, const String& mode,
int options, const Variant& context) {
// @todo: check allow_url_include?
const char* data = filename.data();
int data_len = filename.length();
bool base64 = false;
if (strncmp(data, "data:", sizeof("data:") - 1)) {
return nullptr;
}
data += sizeof("data:") - 1;
data_len -= sizeof("data:") - 1;
// RFC 2397 specifies 'data:' as the prefix,
// but zend's PHP supports 'data://' as well
if (data_len >= 2 && data[0] == '/' && data[1] == '/') {
data_len -= 2;
data += 2;
}
char* comma = (char*)memchr(data, ',', data_len);
if (comma == nullptr) {
raise_warning("rfc2397: missing comma");
return nullptr;
}
if (comma != data) {
// we have meta
ssize_t meta_len = comma - data;
data_len -= meta_len;
char* semi = (char*)memchr(data, ';', meta_len);
char* slash = (char*)memchr(data, '/', meta_len);
if (!slash && !semi) {
raise_warning("rfc2397: invalid meta data");
return nullptr;
}
if (!semi) {
// only media type (type/subtype,data)
ssize_t media_len = comma - data;
meta_len -= media_len;
data += media_len;
} else if (slash && slash < semi) {
// media type + param (type/subtype;param,data)
ssize_t media_len = semi - data;
meta_len -= media_len;
data += media_len;
} else {
// no media type (;base64,data)
if (semi != data // ex. foo;base64,data
|| meta_len != sizeof(";base64") - 1 // ex. ;something,data
|| memcmp(data, ";base64",
sizeof(";base64") - 1)) { // ex. ;base65,data
raise_warning("rfc2397: invalid meta data");
return nullptr;
}
}
assert(data == comma || data == semi);
// eat parameters, and figure out if we have ';base64'
while (semi && (data == semi)) {
data++;
meta_len--;
char* equals = (char*)memchr(data, '=', meta_len);
semi = (char*)memchr(data, ';', meta_len);
if (!equals || (semi && semi < data)) {
// no equals, so either 'base64' or its bad
if (meta_len != sizeof("base64") - 1 ||
memcmp(data, "base64", sizeof("base64")-1)) {
raise_warning("rfc2396: invalid parameter");
return nullptr;
}
// it's "base64", we're done
base64 = true;
meta_len -= sizeof("base64") - 1;
data += sizeof("base64") - 1;
break;
}
// there's a parameter
if (semi) {
meta_len -= semi - data + 1;
data = semi;
} /* else, we're done with meta */
}
}
data = comma + 1;
data_len -= 1;
std::unique_ptr<MemFile> file;
String decoded;
if (base64) {
decoded = string_base64_decode(data, data_len, true);
if (decoded.isNull()) {
raise_warning("unable to decode base64 data");
return nullptr;
}
} else {
decoded = url_decode(data, data_len);
}
file =
std::unique_ptr<MemFile>(NEWOBJ(MemFile)(decoded.data(), decoded.size()));
return file.release();
}
