1 files changed, 65 insertions, 0 deletions
diff --git a/archive.c b/archive.c
new file mode 100644
index 0000000..19269a8
--- /dev/null
+++ b/archive.c
@@ -0,0 +1,65 @@
+#include "spm.h"
+
+/**
+ * Extract a single file from a tar archive into a directory
+ *
+ * @param archive path to tar archive
+ * @param filename known path inside the archive to extract
+ * @param destination where to extract file to (must exist)
+ * @return
+ */
+int tar_extract_file(const char *archive, const char* filename, const char *destination) {
+    Process *proc = NULL;
+    int status;
+    char cmd[PATH_MAX];
+
+    sprintf(cmd, "tar xf %s -C %s %s 2>&1", archive, destination, filename);
+    shell(&proc, SHELL_OUTPUT, cmd);
+    if (!proc) {
+        fprintf(SYSERROR);
+        return -1;
+    }
+
+    status = proc->returncode;
+    shell_free(proc);
+
+    return status;
+}
+
+int tar_extract_archive(const char *_archive, const char *_destination) {
+    Process *proc = NULL;
+    int status;
+    char cmd[PATH_MAX];
+
+    char *archive = strdup(_archive);
+    if (!archive) {
+        fprintf(SYSERROR);
+        return -1;
+    }
+    char *destination = strdup(_destination);
+    if (!destination) {
+        fprintf(SYSERROR);
+        return -1;
+    }
+
+    // sanitize archive
+    strchrdel(archive, "&;|");
+    // sanitize destination
+    strchrdel(destination, "&;|");
+
+    sprintf(cmd, "tar xf %s -C %s 2>&1", archive, destination);
+    shell(&proc, SHELL_OUTPUT, cmd);
+    if (!proc) {
+        fprintf(SYSERROR);
+        free(archive);
+        free(destination);
+        return -1;
+    }
+
+    status = proc->returncode;
+    shell_free(proc);
+    free(archive);
+    free(destination);
+    return status;
+}
+