diff options
Diffstat (limited to 'src/libutil/archive.cc')
-rw-r--r-- | src/libutil/archive.cc | 88 |
1 files changed, 11 insertions, 77 deletions
diff --git a/src/libutil/archive.cc b/src/libutil/archive.cc index 32c75fee5..e3bd63db0 100644 --- a/src/libutil/archive.cc +++ b/src/libutil/archive.cc @@ -18,41 +18,10 @@ namespace nix { static string archiveVersion1 = "nix-archive-1"; -static void writePadding(unsigned int len, DumpSink & sink) -{ - if (len % 8) { - unsigned char zero[8]; - memset(zero, 0, sizeof(zero)); - sink(zero, 8 - (len % 8)); - } -} - - -static void writeInt(unsigned int n, DumpSink & sink) -{ - unsigned char buf[8]; - memset(buf, 0, sizeof(buf)); - buf[0] = n & 0xff; - buf[1] = (n >> 8) & 0xff; - buf[2] = (n >> 16) & 0xff; - buf[3] = (n >> 24) & 0xff; - sink(buf, sizeof(buf)); -} - - -static void writeString(const string & s, DumpSink & sink) -{ - unsigned int len = s.length(); - writeInt(len, sink); - sink((const unsigned char *) s.c_str(), len); - writePadding(len, sink); -} - - -static void dump(const string & path, DumpSink & sink); +static void dump(const string & path, Sink & sink); -static void dumpEntries(const Path & path, DumpSink & sink) +static void dumpEntries(const Path & path, Sink & sink) { Strings names = readDirectory(path); vector<string> names2(names.begin(), names.end()); @@ -73,7 +42,7 @@ static void dumpEntries(const Path & path, DumpSink & sink) static void dumpContents(const Path & path, unsigned int size, - DumpSink & sink) + Sink & sink) { writeString("contents", sink); writeInt(size, sink); @@ -95,7 +64,7 @@ static void dumpContents(const Path & path, unsigned int size, } -static void dump(const Path & path, DumpSink & sink) +static void dump(const Path & path, Sink & sink) { struct stat st; if (lstat(path.c_str(), &st)) @@ -132,7 +101,7 @@ static void dump(const Path & path, DumpSink & sink) } -void dumpPath(const Path & path, DumpSink & sink) +void dumpPath(const Path & path, Sink & sink) { writeString(archiveVersion1, sink); dump(path, sink); @@ -145,42 +114,7 @@ static Error badArchive(string s) } -static void readPadding(unsigned int len, RestoreSource & source) -{ - if (len % 8) { - unsigned char zero[8]; - unsigned int n = 8 - (len % 8); - source(zero, n); - for (unsigned int i = 0; i < n; i++) - if (zero[i]) throw badArchive("non-zero padding"); - } -} - -static unsigned int readInt(RestoreSource & source) -{ - unsigned char buf[8]; - source(buf, sizeof(buf)); - if (buf[4] || buf[5] || buf[6] || buf[7]) - throw Error("implementation cannot deal with > 32-bit integers"); - return - buf[0] | - (buf[1] << 8) | - (buf[2] << 16) | - (buf[3] << 24); -} - - -static string readString(RestoreSource & source) -{ - unsigned int len = readInt(source); - char buf[len]; - source((unsigned char *) buf, len); - readPadding(len, source); - return string(buf, len); -} - - -static void skipGeneric(RestoreSource & source) +static void skipGeneric(Source & source) { if (readString(source) == "(") { while (readString(source) != ")") @@ -189,10 +123,10 @@ static void skipGeneric(RestoreSource & source) } -static void restore(const Path & path, RestoreSource & source); +static void restore(const Path & path, Source & source); -static void restoreEntry(const Path & path, RestoreSource & source) +static void restoreEntry(const Path & path, Source & source) { string s, name; @@ -219,7 +153,7 @@ static void restoreEntry(const Path & path, RestoreSource & source) } -static void restoreContents(int fd, const Path & path, RestoreSource & source) +static void restoreContents(int fd, const Path & path, Source & source) { unsigned int size = readInt(source); unsigned int left = size; @@ -238,7 +172,7 @@ static void restoreContents(int fd, const Path & path, RestoreSource & source) } -static void restore(const Path & path, RestoreSource & source) +static void restore(const Path & path, Source & source) { string s; @@ -315,7 +249,7 @@ static void restore(const Path & path, RestoreSource & source) } -void restorePath(const Path & path, RestoreSource & source) +void restorePath(const Path & path, Source & source) { if (readString(source) != archiveVersion1) throw badArchive("expected Nix archive"); |