+
+/* zcat | file */
+char *
+do_zfile (char *method, char *path)
+{
+ int len;
+ char *cmd;
+ FILE *fp;
+ char line[256];
+
+ NEED_ROOT (NULL);
+ ABS_PATH (path, NULL);
+
+ len = 2 * strlen (path) + sysroot_len + 64;
+ cmd = malloc (len);
+ if (!cmd) {
+ reply_with_perror ("malloc");
+ return NULL;
+ }
+
+ if (strcmp (method, "gzip") == 0 || strcmp (method, "compress") == 0)
+ strcpy (cmd, "zcat");
+ else if (strcmp (method, "bzip2") == 0)
+ strcpy (cmd, "bzcat");
+ else {
+ free (cmd);
+ reply_with_error ("zfile: unknown method");
+ return NULL;
+ }
+
+ strcat (cmd, " ");
+ strcat (cmd, sysroot);
+ shell_quote (cmd + strlen (cmd), len - strlen (cmd), path);
+ strcat (cmd, " | file -bsL -");
+
+ fp = popen (cmd, "r");
+ if (fp == NULL) {
+ reply_with_perror ("%s", cmd);
+ free (cmd);
+ return NULL;
+ }
+
+ free (cmd);
+
+ if (fgets (line, sizeof line, fp) == NULL) {
+ reply_with_perror ("zfile: fgets");
+ fclose (fp);
+ return NULL;
+ }
+
+ if (fclose (fp) == -1) {
+ reply_with_perror ("zfile: fclose");
+ return NULL;
+ }
+
+ len = strlen (line);
+ if (len > 0 && line[len-1] == '\n')
+ line[len-1] = '\0';
+
+ return strdup (line);
+}