+ if (c >= 'A' && c <= 'Z') return c - 'A';
+ if (c >= 'a' && c <= 'z') return c - 'a' + 26;
+ if (c >= '0' && c <= '9') return c - '0' + 52;
+ if (c == '+') return 62;
+ if (c == '/') return 63;
+ return 64;
+}
+
+static unsigned int decode_base64( const WCHAR *base64, unsigned int len, char *buf )
+{
+ unsigned int i = 0;
+ char c0, c1, c2, c3;
+ const WCHAR *p = base64;
+
+ while (len > 4)
+ {
+ if ((c0 = decode_char( p[0] )) > 63) return 0;
+ if ((c1 = decode_char( p[1] )) > 63) return 0;
+ if ((c2 = decode_char( p[2] )) > 63) return 0;
+ if ((c3 = decode_char( p[3] )) > 63) return 0;
+
+ if (buf)
+ {
+ buf[i + 0] = (c0 << 2) | (c1 >> 4);
+ buf[i + 1] = (c1 << 4) | (c2 >> 2);
+ buf[i + 2] = (c2 << 6) | c3;
+ }
+ len -= 4;
+ i += 3;
+ p += 4;
+ }
+ if (p[2] == '=')
+ {
+ if ((c0 = decode_char( p[0] )) > 63) return 0;
+ if ((c1 = decode_char( p[1] )) > 63) return 0;
+
+ if (buf) buf[i] = (c0 << 2) | (c1 >> 4);
+ i++;
+ }
+ else if (p[3] == '=')
+ {
+ if ((c0 = decode_char( p[0] )) > 63) return 0;
+ if ((c1 = decode_char( p[1] )) > 63) return 0;
+ if ((c2 = decode_char( p[2] )) > 63) return 0;
+
+ if (buf)
+ {
+ buf[i + 0] = (c0 << 2) | (c1 >> 4);
+ buf[i + 1] = (c1 << 4) | (c2 >> 2);
+ }
+ i += 2;
+ }
+ else
+ {
+ if ((c0 = decode_char( p[0] )) > 63) return 0;
+ if ((c1 = decode_char( p[1] )) > 63) return 0;
+ if ((c2 = decode_char( p[2] )) > 63) return 0;
+ if ((c3 = decode_char( p[3] )) > 63) return 0;
+
+ if (buf)
+ {
+ buf[i + 0] = (c0 << 2) | (c1 >> 4);
+ buf[i + 1] = (c1 << 4) | (c2 >> 2);
+ buf[i + 2] = (c2 << 6) | c3;
+ }
+ i += 3;
+ }
+ return i;
+}
+
+static struct authinfo *alloc_authinfo(void)
+{
+ struct authinfo *ret;
+
+ if (!(ret = HeapAlloc(GetProcessHeap(), 0, sizeof(*ret) ))) return NULL;
+
+ SecInvalidateHandle(&ret->cred);
+ SecInvalidateHandle(&ret->ctx);
+ memset(&ret->exp, 0, sizeof(ret->exp));
+ ret->scheme = 0;
+ ret->attr = 0;
+ ret->max_token = 0;
+ ret->data = NULL;
+ ret->data_len = 0;
+ ret->finished = FALSE;
+ return ret;
+}
+
+static void destroy_authinfo(struct authinfo *info)
+{
+ if (!info) return;
+
+ if (SecIsValidHandle(&info->ctx))
+ DeleteSecurityContext(&info->ctx);
+ if (SecIsValidHandle(&info->cred))
+ FreeCredentialsHandle(&info->cred);
+
+ HeapFree(GetProcessHeap(), 0, info->data);
+ HeapFree(GetProcessHeap(), 0, info);
+}
+
+static const WCHAR basicW[] = {'B','a','s','i','c',0};
+static const WCHAR ntlmW[] = {'N','T','L','M',0};
+static const WCHAR passportW[] = {'P','a','s','s','p','o','r','t',0};
+static const WCHAR digestW[] = {'D','i','g','e','s','t',0};
+static const WCHAR negotiateW[] = {'N','e','g','o','t','i','a','t','e',0};
+
+static const struct
+{
+ const WCHAR *str;
+ unsigned int len;
+ DWORD scheme;
+}
+auth_schemes[] =
+{
+ { basicW, ARRAYSIZE(basicW) - 1, RPC_C_HTTP_AUTHN_SCHEME_BASIC },
+ { ntlmW, ARRAYSIZE(ntlmW) - 1, RPC_C_HTTP_AUTHN_SCHEME_NTLM },
+ { passportW, ARRAYSIZE(passportW) - 1, RPC_C_HTTP_AUTHN_SCHEME_PASSPORT },
+ { digestW, ARRAYSIZE(digestW) - 1, RPC_C_HTTP_AUTHN_SCHEME_DIGEST },
+ { negotiateW, ARRAYSIZE(negotiateW) - 1, RPC_C_HTTP_AUTHN_SCHEME_NEGOTIATE }
+};
+static const unsigned int num_auth_schemes = sizeof(auth_schemes)/sizeof(auth_schemes[0]);
+
+static DWORD auth_scheme_from_header( const WCHAR *header )
+{
+ unsigned int i;
+ for (i = 0; i < num_auth_schemes; i++)
+ {
+ if (!strncmpiW( header, auth_schemes[i].str, auth_schemes[i].len ) &&
+ (header[auth_schemes[i].len] == ' ' || !header[auth_schemes[i].len])) return auth_schemes[i].scheme;
+ }
+ return 0;
+}
+
+static BOOL get_authvalue(HINTERNET request, DWORD scheme, WCHAR *buffer, DWORD buflen)
+{
+ DWORD len, index = 0;
+ for (;;)
+ {
+ len = buflen;
+ if (!HttpQueryInfoW(request, HTTP_QUERY_WWW_AUTHENTICATE, buffer, &len, &index)) return FALSE;
+ if (auth_scheme_from_header(buffer) == scheme) break;
+ }
+ return TRUE;
+}
+
+static RPC_STATUS do_authorization(HINTERNET request, SEC_WCHAR *servername,
+ const RPC_HTTP_TRANSPORT_CREDENTIALS_W *creds, struct authinfo **auth_ptr)
+{
+ struct authinfo *info = *auth_ptr;
+ SEC_WINNT_AUTH_IDENTITY_W *id = creds->TransportCredentials;
projects / reactos.git / commitdiff