1 files changed, 102 insertions, 0 deletions
diff --git a/c/src/encarchive.c b/c/src/encarchive.c
new file mode 100644
index 0000000..45e840f
--- /dev/null
+++ b/c/src/encarchive.c
@@ -0,0 +1,102 @@
+/**
+ * GPGSecure manages GPG encrypted archives
+ * Copyright (C) 2018  Aaron Ball <nullspoon@oper.io>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "encarchive.h"
+
+int cd_open(struct archive *a, void *client_data) {
+  struct clientdata *cd = client_data;
+  cd->fd = open(cd->name, O_RDONLY);
+  return (cd->fd >= 0 ? ARCHIVE_OK : ARCHIVE_FATAL);
+}
+
+la_ssize_t cd_read(struct archive *a, void *client_data, const void **buff) {
+  struct clientdata *cd = client_data;
+  *buff = cd->buff;
+  return (read(cd->fd, cd->buff, 10240));
+}
+
+int cd_close(struct archive *a, void *client_data) {
+  struct clientdata *cd = client_data;
+
+  if(cd->fd > 0)
+    close(cd->fd);
+  return(ARCHIVE_OK);
+}
+
+int enc_archive_enum(char* path) {
+  struct clientdata *cd;
+  struct archive *a;
+  struct archive_entry *entry;
+
+  cd = malloc(sizeof(struct clientdata));
+  a = archive_read_new();
+  cd->name = path;
+
+  // Add read support options
+  int r;
+  r = archive_read_support_filter_all(a);
+  if(r > 0)
+    return r;
+  r = archive_read_support_format_all(a);
+  if(r > 0)
+    return r;
+
+  // Open the archive
+  archive_read_open(a, cd, cd_open, cd_read, cd_close);
+  while(archive_read_next_header(a, &entry) == ARCHIVE_OK) {
+    // Print archive filename
+    printf("%s\n", archive_entry_pathname(entry));
+    archive_read_data_skip(a);
+  }
+
+  archive_read_free(a);
+  free(cd);
+  return 0;
+}
+
+
+int enc_archive_extract(char* srcarchive, char* dest) {
+  struct clientdata *cd;
+  struct archive *a;
+  struct archive_entry *entry;
+
+  cd = malloc(sizeof(struct clientdata));
+  a = archive_read_new();
+  cd->name = srcarchive;
+
+  // Add read support options
+  int r;
+  r = archive_read_support_filter_all(a);
+  if(r > 0)
+    return r;
+  r = archive_read_support_format_all(a);
+  if(r > 0)
+    return r;
+
+  // Open the archive
+  archive_read_open(a, cd, cd_open, cd_read, cd_close);
+  while(archive_read_next_header(a, &entry) == ARCHIVE_OK) {
+    archive_read_extract(a, entry, ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS);
+    archive_read_data_skip(a);
+    // Print archive filename
+    printf("extracting %s\n", archive_entry_pathname(entry));
+  }
+
+  archive_read_free(a);
+  free(cd);
+  return 0;
+}