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-rw-r--r--methods/rred.cc262
1 files changed, 0 insertions, 262 deletions
diff --git a/methods/rred.cc b/methods/rred.cc
deleted file mode 100644
index 6fa57f3a6..000000000
--- a/methods/rred.cc
+++ /dev/null
@@ -1,262 +0,0 @@
-#include <apt-pkg/fileutl.h>
-#include <apt-pkg/error.h>
-#include <apt-pkg/acquire-method.h>
-#include <apt-pkg/strutl.h>
-#include <apt-pkg/hashes.h>
-
-#include <sys/stat.h>
-#include <unistd.h>
-#include <utime.h>
-#include <stdio.h>
-#include <errno.h>
-#include <apti18n.h>
-
-/* this method implements a patch functionality similar to "patch --ed" that is
- * used by the "tiffany" incremental packages download stuff. it differs from
- * "ed" insofar that it is way more restricted (and therefore secure). in the
- * moment only the "c", "a" and "d" commands of ed are implemented (diff
- * doesn't output any other). additionally the records must be reverse sorted
- * by line number and may not overlap (diff *seems* to produce this kind of
- * output).
- * */
-
-const char *Prog;
-
-class RredMethod : public pkgAcqMethod
-{
- bool Debug;
- // the size of this doesn't really matter (except for performance)
- const static int BUF_SIZE = 1024;
- // the ed commands
- enum Mode {MODE_CHANGED, MODE_DELETED, MODE_ADDED};
- // return values
- enum State {ED_OK, ED_ORDERING, ED_PARSER, ED_FAILURE};
- // this applies a single hunk, it uses a tail recursion to
- // reverse the hunks in the file
- int ed_rec(FILE *ed_cmds, FILE *in_file, FILE *out_file, int line,
- char *buffer, unsigned int bufsize, Hashes *hash);
- // apply a patch file
- int ed_file(FILE *ed_cmds, FILE *in_file, FILE *out_file, Hashes *hash);
- // the methods main method
- virtual bool Fetch(FetchItem *Itm);
-
- public:
-
- RredMethod() : pkgAcqMethod("1.1",SingleInstance | SendConfig) {};
-};
-
-int RredMethod::ed_rec(FILE *ed_cmds, FILE *in_file, FILE *out_file, int line,
- char *buffer, unsigned int bufsize, Hashes *hash) {
- int pos;
- int startline;
- int stopline;
- int mode;
- int written;
- char *idx;
-
- /* get the current command and parse it*/
- if (fgets(buffer, bufsize, ed_cmds) == NULL) {
- return line;
- }
- startline = strtol(buffer, &idx, 10);
- if (startline < line) {
- return ED_ORDERING;
- }
- if (*idx == ',') {
- idx++;
- stopline = strtol(idx, &idx, 10);
- }
- else {
- stopline = startline;
- }
- if (*idx == 'c') {
- mode = MODE_CHANGED;
- if (Debug == true) {
- std::clog << "changing from line " << startline
- << " to " << stopline << std::endl;
- }
- }
- else if (*idx == 'a') {
- mode = MODE_ADDED;
- if (Debug == true) {
- std::clog << "adding after line " << startline << std::endl;
- }
- }
- else if (*idx == 'd') {
- mode = MODE_DELETED;
- if (Debug == true) {
- std::clog << "deleting from line " << startline
- << " to " << stopline << std::endl;
- }
- }
- else {
- return ED_PARSER;
- }
- /* get the current position */
- pos = ftell(ed_cmds);
- /* if this is add or change then go to the next full stop */
- if ((mode == MODE_CHANGED) || (mode == MODE_ADDED)) {
- do {
- fgets(buffer, bufsize, ed_cmds);
- while ((strlen(buffer) == (bufsize - 1))
- && (buffer[bufsize - 2] != '\n')) {
- fgets(buffer, bufsize, ed_cmds);
- buffer[0] = ' ';
- }
- } while (strncmp(buffer, ".", 1) != 0);
- }
- /* do the recursive call */
- line = ed_rec(ed_cmds, in_file, out_file, line, buffer, bufsize,
- hash);
- /* pass on errors */
- if (line < 0) {
- return line;
- }
- /* apply our hunk */
- fseek(ed_cmds, pos, SEEK_SET);
- /* first wind to the current position */
- if (mode != MODE_ADDED) {
- startline -= 1;
- }
- while (line < startline) {
- fgets(buffer, bufsize, in_file);
- written = fwrite(buffer, 1, strlen(buffer), out_file);
- hash->Add((unsigned char*)buffer, written);
- while ((strlen(buffer) == (bufsize - 1))
- && (buffer[bufsize - 2] != '\n')) {
- fgets(buffer, bufsize, in_file);
- written = fwrite(buffer, 1, strlen(buffer), out_file);
- hash->Add((unsigned char*)buffer, written);
- }
- line++;
- }
- /* include from ed script */
- if ((mode == MODE_ADDED) || (mode == MODE_CHANGED)) {
- do {
- fgets(buffer, bufsize, ed_cmds);
- if (strncmp(buffer, ".", 1) != 0) {
- written = fwrite(buffer, 1, strlen(buffer), out_file);
- hash->Add((unsigned char*)buffer, written);
- while ((strlen(buffer) == (bufsize - 1))
- && (buffer[bufsize - 2] != '\n')) {
- fgets(buffer, bufsize, ed_cmds);
- written = fwrite(buffer, 1, strlen(buffer), out_file);
- hash->Add((unsigned char*)buffer, written);
- }
- }
- else {
- break;
- }
- } while (1);
- }
- /* ignore the corresponding number of lines from input */
- if ((mode == MODE_DELETED) || (mode == MODE_CHANGED)) {
- while (line < stopline) {
- fgets(buffer, bufsize, in_file);
- while ((strlen(buffer) == (bufsize - 1))
- && (buffer[bufsize - 2] != '\n')) {
- fgets(buffer, bufsize, in_file);
- }
- line++;
- }
- }
- return line;
-}
-
-int RredMethod::ed_file(FILE *ed_cmds, FILE *in_file, FILE *out_file,
- Hashes *hash) {
- char buffer[BUF_SIZE];
- int result;
- int written;
-
- /* we do a tail recursion to read the commands in the right order */
- result = ed_rec(ed_cmds, in_file, out_file, 0, buffer, BUF_SIZE,
- hash);
-
- /* read the rest from infile */
- if (result > 0) {
- while (fgets(buffer, BUF_SIZE, in_file) != NULL) {
- written = fwrite(buffer, 1, strlen(buffer), out_file);
- hash->Add((unsigned char*)buffer, written);
- }
- }
- else {
- return ED_FAILURE;
- }
- return ED_OK;
-}
-
-
-bool RredMethod::Fetch(FetchItem *Itm)
-{
- Debug = _config->FindB("Debug::pkgAcquire::RRed",false);
- URI Get = Itm->Uri;
- string Path = Get.Host + Get.Path; // To account for relative paths
- // Path contains the filename to patch
- FetchResult Res;
- Res.Filename = Itm->DestFile;
- URIStart(Res);
- // Res.Filename the destination filename
-
- if (Debug == true)
- std::clog << "Patching " << Path << " with " << Path
- << ".ed and putting result into " << Itm->DestFile << std::endl;
- // Open the source and destination files (the d'tor of FileFd will do
- // the cleanup/closing of the fds)
- FileFd From(Path,FileFd::ReadOnly);
- FileFd Patch(Path+".ed",FileFd::ReadOnly);
- FileFd To(Itm->DestFile,FileFd::WriteEmpty);
- To.EraseOnFailure();
- if (_error->PendingError() == true)
- return false;
-
- Hashes Hash;
- FILE* fFrom = fdopen(From.Fd(), "r");
- FILE* fPatch = fdopen(Patch.Fd(), "r");
- FILE* fTo = fdopen(To.Fd(), "w");
- // now do the actual patching
- if (ed_file(fPatch, fFrom, fTo, &Hash) != ED_OK) {
- _error->Errno("rred", _("Could not patch file"));
- return false;
- }
-
- // write out the result
- fflush(fFrom);
- fflush(fPatch);
- fflush(fTo);
- From.Close();
- Patch.Close();
- To.Close();
-
- // Transfer the modification times
- struct stat Buf;
- if (stat(Path.c_str(),&Buf) != 0)
- return _error->Errno("stat",_("Failed to stat"));
-
- struct utimbuf TimeBuf;
- TimeBuf.actime = Buf.st_atime;
- TimeBuf.modtime = Buf.st_mtime;
- if (utime(Itm->DestFile.c_str(),&TimeBuf) != 0)
- return _error->Errno("utime",_("Failed to set modification time"));
-
- if (stat(Itm->DestFile.c_str(),&Buf) != 0)
- return _error->Errno("stat",_("Failed to stat"));
-
- // return done
- Res.LastModified = Buf.st_mtime;
- Res.Size = Buf.st_size;
- Res.TakeHashes(Hash);
- URIDone(Res);
-
- return true;
-}
-
-int main(int argc, char *argv[])
-{
- RredMethod Mth;
-
- Prog = strrchr(argv[0],'/');
- Prog++;
-
- return Mth.Run();
-}
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