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@ -743,6 +743,79 @@ bool TarListAddFile(const char *filename)
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return true;
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}
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/**
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* Extract the tar with the given filename in the directory
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* where the tar resides.
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* @param tar_filename the name of the tar to extract.
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* @return false on failure.
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*/
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bool ExtractTar(const char *tar_filename)
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{
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TarList::iterator it = _tar_list.find(tar_filename);
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/* We don't know the file. */
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if (it == _tar_list.end()) return false;
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const char *dirname = (*it).second.dirname;
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/* The file doesn't have a sub directory! */
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if (dirname == NULL) return false;
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char filename[MAX_PATH];
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strecpy(filename, tar_filename, lastof(filename));
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char *p = strrchr(filename, PATHSEPCHAR);
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/* The file's path does not have a separator? */
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if (p == NULL) return false;
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p++;
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strecpy(p, dirname, lastof(filename));
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DEBUG(misc, 8, "Extracting %s to directory %s", tar_filename, filename);
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FioCreateDirectory(filename);
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for (TarFileList::iterator it2 = _tar_filelist.begin(); it2 != _tar_filelist.end(); it2++) {
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if (strcmp((*it2).second.tar_filename, tar_filename) != 0) continue;
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strecpy(p, (*it2).first.c_str(), lastof(filename));
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DEBUG(misc, 9, " extracting %s", filename);
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/* First open the file in the .tar. */
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size_t to_copy = 0;
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FILE *in = FioFOpenFileTar(&(*it2).second, &to_copy);
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if (in == NULL) {
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DEBUG(misc, 6, "Extracting %s failed; could not open %s", filename, tar_filename);
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return false;
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}
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/* Now open the 'output' file. */
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FILE *out = fopen(filename, "wb");
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if (out == NULL) {
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DEBUG(misc, 6, "Extracting %s failed; could not open %s", filename, filename);
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fclose(in);
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return false;
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}
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/* Now read from the tar and write it into the file. */
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char buffer[4096];
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size_t read;
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for (; to_copy != 0; to_copy -= read) {
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read = fread(buffer, 1, min(to_copy, lengthof(buffer)), in);
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if (read <= 0 || fwrite(buffer, 1, read, out) != read) break;
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}
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/* Close everything up. */
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fclose(in);
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fclose(out);
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if (to_copy != 0) {
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DEBUG(misc, 6, "Extracting %s failed; still %i bytes to copy", filename, (int)to_copy);
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return false;
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}
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}
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DEBUG(misc, 9, " extraction successful");
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return true;
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}
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static int ScanPathForTarFiles(const char *path, size_t basepath_length)
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{
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extern bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb);
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