X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Futil.cc;h=ac067a7670233f32581c178d6cf896b553a58dc7;hb=491ac453512ac1982f62fc0d2a310586427601d7;hp=767c149090db42514738eff71bd0ee58b5632000;hpb=93096af59d8235235c0caed929b6f72dcf09cdc9;p=libdcp.git diff --git a/src/util.cc b/src/util.cc index 767c1490..ac067a76 100644 --- a/src/util.cc +++ b/src/util.cc @@ -26,8 +26,9 @@ #include "types.h" #include "argb_frame.h" #include "certificates.h" -#include "gamma_lut.h" #include "xyz_frame.h" +#include "dcp_assert.h" +#include "compose.hpp" #include "KM_util.h" #include "KM_fileio.h" #include "AS_DCP.h" @@ -39,7 +40,7 @@ #include #include #include -#include +#include #include #include #include @@ -54,8 +55,11 @@ using std::max; using std::list; using std::setw; using std::setfill; +using std::ostream; using boost::shared_ptr; -using boost::lexical_cast; +using boost::optional; +using boost::function; +using boost::algorithm::trim; using namespace dcp; /** Create a UUID. @@ -74,12 +78,12 @@ dcp::make_uuid () /** Create a digest for a file. * @param filename File name. - * @param progress Pointer to a progress reporting function, or 0. The function will be called + * @param progress Optional progress reporting function. The function will be called * with a progress value between 0 and 1. * @return Digest. */ string -dcp::make_digest (boost::filesystem::path filename, boost::function* progress) +dcp::make_digest (boost::filesystem::path filename, function progress) { Kumu::FileReader reader; Kumu::Result_t r = reader.OpenRead (filename.string().c_str ()); @@ -108,7 +112,7 @@ dcp::make_digest (boost::filesystem::path filename, boost::function (size) + " bytes.")); + boost::throw_exception (DCPReadError (String::compose ("could not decode JPEG2000 codestream of %1 bytes.", size))); } opj_destroy_decompress (decoder); @@ -272,6 +276,12 @@ bool dcp::operator!= (dcp::Size const & a, dcp::Size const & b) return !(a == b); } +ostream& dcp::operator<< (ostream& s, dcp::Size const & a) +{ + s << a.width << "x" << a.height; + return s; +} + /** Decode a base64 string. The base64 decode routine in KM_util.cpp * gives different values to both this and the command-line base64 * for some inputs. Not sure why. @@ -306,82 +316,102 @@ dcp::base64_decode (string const & in, unsigned char* out, int out_length) return N; } -/** Convert a struct tm to a string of the form - * 2014-01-26T21:39:00+01:00 - * @param tm struct tm. - * @return Time as a string. +/** @param p Path to open. + * @param t mode flags, as for fopen(3). + * @return FILE pointer or 0 on error. + * + * Apparently there is no way to create an ofstream using a UTF-8 + * filename under Windows. We are hence reduced to using fopen + * with this wrapper. */ -string -dcp::tm_to_string (struct tm* tm) +FILE * +dcp::fopen_boost (boost::filesystem::path p, string t) { - char buffer[64]; - strftime (buffer, 64, "%Y-%m-%dT%H:%M:%S", tm); - - int offset = 0; - -#ifdef LIBDCP_POSIX - offset = tm->tm_gmtoff / 60; +#ifdef LIBDCP_WINDOWS + wstring w (t.begin(), t.end()); + /* c_str() here should give a UTF-16 string */ + return _wfopen (p.c_str(), w.c_str ()); #else - TIME_ZONE_INFORMATION tz; - GetTimeZoneInformation (&tz); - offset = tz.Bias; + return fopen (p.c_str(), t.c_str ()); #endif - - return string (buffer) + utc_offset_to_string (offset); } -/** @param b Offset from UTC to local time in minutes. - * @return string of the form e.g. -01:00. - */ -string -dcp::utc_offset_to_string (int b) +optional +dcp::relative_to_root (boost::filesystem::path root, boost::filesystem::path file) { - bool const negative = (b < 0); - b = negative ? -b : b; + boost::filesystem::path::const_iterator i = root.begin (); + boost::filesystem::path::const_iterator j = file.begin (); - int const hours = b / 60; - int const minutes = b % 60; + while (i != root.end() && j != file.end() && *i == *j) { + ++i; + ++j; + } + + if (i != root.end ()) { + return optional (); + } - stringstream o; - if (negative) { - o << "-"; - } else { - o << "+"; + boost::filesystem::path rel; + while (j != file.end ()) { + rel /= *j++; } - o << setw(2) << setfill('0') << hours << ":" << setw(2) << setfill('0') << minutes; - return o.str (); + return rel; } -/** Convert a boost::posix_time::ptime to a string of the form - * 2014-01-26T21:39:00+01:00. - * @param t boost::posix_time::ptime. - * @return Time as a string. - */ -string -dcp::ptime_to_string (boost::posix_time::ptime t) +bool +dcp::ids_equal (string a, string b) { - struct tm t_tm = boost::posix_time::to_tm (t); - return tm_to_string (&t_tm); + transform (a.begin(), a.end(), a.begin(), ::tolower); + transform (b.begin(), b.end(), b.begin(), ::tolower); + trim (a); + trim (b); + return a == b; } +string +dcp::file_to_string (boost::filesystem::path p, uintmax_t max_length) +{ + uintmax_t len = boost::filesystem::file_size (p); + if (len > max_length) { + throw MiscError ("Unexpectedly long file"); + } + + char* c = new char[len + 1]; + + FILE* f = fopen_boost (p, "r"); + if (!f) { + return ""; + } -/** @param p Path to open. - * @param t mode flags, as for fopen(3). - * @return FILE pointer or 0 on error. - * - * Apparently there is no way to create an ofstream using a UTF-8 - * filename under Windows. We are hence reduced to using fopen - * with this wrapper. + fread (c, 1, len, f); + fclose (f); + c[len] = '\0'; + + string s (c); + delete[] c; + + return s; +} + +/** @param key RSA private key in PEM format (optionally with -----BEGIN... / -----END...) + * @return SHA1 fingerprint of key */ -FILE * -dcp::fopen_boost (boost::filesystem::path p, string t) +string +dcp::private_key_fingerprint (string key) { -#ifdef LIBDCP_WINDOWS - wstring w (t.begin(), t.end()); - /* c_str() here should give a UTF-16 string */ - return _wfopen (p.c_str(), w.c_str ()); -#else - return fopen (p.c_str(), t.c_str ()); -#endif + boost::replace_all (key, "-----BEGIN RSA PRIVATE KEY-----\n", ""); + boost::replace_all (key, "\n-----END RSA PRIVATE KEY-----\n", ""); + + unsigned char buffer[4096]; + int const N = base64_decode (key, buffer, sizeof (buffer)); + + SHA_CTX sha; + SHA1_Init (&sha); + SHA1_Update (&sha, buffer, N); + uint8_t digest[20]; + SHA1_Final (digest, &sha); + + char digest_base64[64]; + return Kumu::base64encode (digest, 20, digest_base64, 64); }