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-rw-r--r--src/libnix/archive.cc334
1 files changed, 0 insertions, 334 deletions
diff --git a/src/libnix/archive.cc b/src/libnix/archive.cc
deleted file mode 100644
index ed57df4c9f7b..000000000000
--- a/src/libnix/archive.cc
+++ /dev/null
@@ -1,334 +0,0 @@
-#include <cerrno>
-#include <algorithm>
-#include <vector>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <fcntl.h>
-
-#include "archive.hh"
-#include "util.hh"
-
-
-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 dumpEntries(const Path & path, DumpSink & sink)
-{
-    AutoCloseDir dir = opendir(path.c_str());
-    if (!dir) throw SysError("opening directory " + path);
-
-    vector<string> names;
-
-    struct dirent * dirent;
-    while (errno = 0, dirent = readdir(dir)) {
-        string name = dirent->d_name;
-        if (name == "." || name == "..") continue;
-        names.push_back(name);
-    }
-    if (errno) throw SysError("reading directory " + path);
-
-    sort(names.begin(), names.end());
-
-    for (vector<string>::iterator it = names.begin();
-         it != names.end(); it++)
-    {
-        writeString("entry", sink);
-        writeString("(", sink);
-        writeString("name", sink);
-        writeString(*it, sink);
-        writeString("node", sink);
-        dump(path + "/" + *it, sink);
-        writeString(")", sink);
-    }
-}
-
-
-static void dumpContents(const Path & path, unsigned int size, 
-    DumpSink & sink)
-{
-    writeString("contents", sink);
-    writeInt(size, sink);
-
-    AutoCloseFD fd = open(path.c_str(), O_RDONLY);
-    if (fd == -1) throw SysError(format("opening file `%1%'") % path);
-    
-    unsigned char buf[65536];
-
-    unsigned int total = 0;
-    ssize_t n;
-    while ((n = read(fd, buf, sizeof(buf)))) {
-        if (n == -1) throw SysError("reading file " + path);
-        total += n;
-        sink(buf, n);
-    }
-
-    if (total != size)
-        throw SysError("file changed while reading it: " + path);
-
-    writePadding(size, sink);
-}
-
-
-static void dump(const Path & path, DumpSink & sink)
-{
-    struct stat st;
-    if (lstat(path.c_str(), &st))
-        throw SysError(format("getting attributes of path `%1%'") % path);
-
-    writeString("(", sink);
-
-    if (S_ISREG(st.st_mode)) {
-        writeString("type", sink);
-        writeString("regular", sink);
-        if (st.st_mode & S_IXUSR) {
-            writeString("executable", sink);
-            writeString("", sink);
-        }
-        dumpContents(path, st.st_size, sink);
-    } 
-
-    else if (S_ISDIR(st.st_mode)) {
-        writeString("type", sink);
-        writeString("directory", sink);
-        dumpEntries(path, sink);
-    }
-
-    else if (S_ISLNK(st.st_mode)) {
-        writeString("type", sink);
-        writeString("symlink", sink);
-        char buf[st.st_size];
-        if (readlink(path.c_str(), buf, st.st_size) != st.st_size)
-            throw SysError("reading symbolic link " + path);
-        writeString("target", sink);
-        writeString(string(buf, st.st_size), sink);
-    }
-
-    else throw Error("unknown file type: " + path);
-
-    writeString(")", sink);
-}
-
-
-void dumpPath(const Path & path, DumpSink & sink)
-{
-    writeString(archiveVersion1, sink);
-    dump(path, sink);
-}
-
-
-static Error badArchive(string s)
-{
-    return Error("bad archive: " + 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)
-{
-    if (readString(source) == "(") {
-        while (readString(source) != ")")
-            skipGeneric(source);
-    }
-}
-
-
-static void restore(const Path & path, RestoreSource & source);
-
-
-static void restoreEntry(const Path & path, RestoreSource & source)
-{
-    string s, name;
-
-    s = readString(source);
-    if (s != "(") throw badArchive("expected open tag");
-
-    while (1) {
-        s = readString(source);
-
-        if (s == ")") {
-            break;
-        } else if (s == "name") {
-            name = readString(source);
-        } else if (s == "node") {
-            if (s == "") throw badArchive("entry name missing");
-            restore(path + "/" + name, source);
-        } else {
-            throw badArchive("unknown field " + s);
-            skipGeneric(source);
-        }
-    }
-}
-
-
-static void restoreContents(int fd, const Path & path, RestoreSource & source)
-{
-    unsigned int size = readInt(source);
-    unsigned int left = size;
-    unsigned char buf[65536];
-
-    while (left) {
-        unsigned int n = sizeof(buf);
-        if (n > left) n = left;
-        source(buf, n);
-        if (write(fd, buf, n) != (ssize_t) n)
-            throw SysError("writing file " + path);
-        left -= n;
-    }
-
-    readPadding(size, source);
-}
-
-
-static void restore(const Path & path, RestoreSource & source)
-{
-    string s;
-
-    s = readString(source);
-    if (s != "(") throw badArchive("expected open tag");
-
-    enum { tpUnknown, tpRegular, tpDirectory, tpSymlink } type = tpUnknown;
-    AutoCloseFD fd;
-
-    while (1) {
-        s = readString(source);
-
-        if (s == ")") {
-            break;
-        }
-
-        else if (s == "type") {
-            if (type != tpUnknown)
-                throw badArchive("multiple type fields");
-            string t = readString(source);
-
-            if (t == "regular") {
-                type = tpRegular;
-                fd = open(path.c_str(), O_CREAT | O_EXCL | O_WRONLY, 0666);
-                if (fd == -1)
-                    throw SysError("creating file " + path);
-            }
-
-            else if (t == "directory") {
-                type = tpDirectory;
-                if (mkdir(path.c_str(), 0777) == -1)
-                    throw SysError("creating directory " + path);
-            }
-
-            else if (t == "symlink") {
-                type = tpSymlink;
-            }
-            
-            else throw badArchive("unknown file type " + t);
-            
-        }
-
-        else if (s == "contents" && type == tpRegular) {
-            restoreContents(fd, path, source);
-        }
-
-        else if (s == "executable" && type == tpRegular) {
-            readString(source);
-            struct stat st;
-            if (fstat(fd, &st) == -1)
-                throw SysError("fstat");
-            if (fchmod(fd, st.st_mode | (S_IXUSR | S_IXGRP | S_IXOTH)) == -1)
-                throw SysError("fchmod");
-        }
-
-        else if (s == "entry" && type == tpDirectory) {
-            restoreEntry(path, source);
-        }
-
-        else if (s == "target" && type == tpSymlink) {
-            string target = readString(source);
-            if (symlink(target.c_str(), path.c_str()) == -1)
-                throw SysError("creating symlink " + path);
-        }
-
-        else {
-            throw badArchive("unknown field " + s);
-            skipGeneric(source);
-        }
-        
-    }
-}
-
-
-void restorePath(const Path & path, RestoreSource & source)
-{
-    if (readString(source) != archiveVersion1)
-        throw badArchive("expected Nix archive");
-    restore(path, source);
-}
-
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