Suffix rollback with -set_filter --remove-all-filters

xorriso/xorriso.1

@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "Apr 05, 2009"
+.TH XORRISO 1 "Apr 06, 2009"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -1094,6 +1094,8 @@ original content from stdin and writing to stdout whatever they want.
 They must deliver the same output on the same input in repeated runs.
 .br
 Options are:
+.br
+ "default" means that no other option is intended.
 .br
  "suffix=..." sets a file name suffix. If it is not empty then it will be
 appended to the file name or removed from it.
@@ -1134,12 +1136,14 @@ By default they are banned if xorriso runs under setuid permission.
 .TP
 \fB\-set_filter\fR name iso_rr_path [***]
 Apply an -external_filter to the given data files in the ISO image.
-If the filter suffix is not empty , then it will be appended to the file name.
+If the filter suffix is not empty , then it will be applied to the file name.
 Renaming only happens if the filter really gets attached and is not revoked by
-its options. Files which already bear the suffix will not get filtered.
+its options.
+By default files which already bear the suffix will not get filtered. The
+others will get the suffix appended to their names.
 If the filter has option "remove_suffix", then the filter will only be
 applied if the suffix is present and can be removed.
-Name collisons caused by suffix change will prevent filtering.
+Name oversize or collision caused by suffix change will prevent filtering.
 .br
 This command will immediately run the filter once for each file
 in order to determine the output size.
@@ -1151,10 +1155,9 @@ output from the first run. Filtering for image generation does not happen
 with files from the loaded ISO image if the write method of growing is in
 effect (i.e -indev and -outdev are identical).
 .br
-The reserved filter name "--remove-all-filters" revokes filtering. A suffix
+The reserved filter name "--remove-all-filters" revokes filtering. This will
-may be appended after a "+" or "-". "-" will restrict the filter removal
+revoke eventual suffix renamings as well. Use "--remove-all-filters+" to
-to files with that suffix and remove it from the file name. "+" will only
+prevent any suffix renaming.
-process files without that suffix and add it to the name.
 .TP
 \fB\-set_filter_r\fR name isuffix iso_rr_path [***]
 Like -set_filter but affecting all data files below eventual directories.

xorriso/xorriso_timestamp.h

@@ -1 +1 @@
-#define Xorriso_timestamP "2009.04.05.143043"
+#define Xorriso_timestamP "2009.04.06.100802"

xorriso/xorrisoburn.c

@@ -9780,6 +9780,88 @@ int Xorriso_destroy_all_extf(struct XorrisO *xorriso, int flag)
 }
 
 
+/*
+ @param flag   bit0= return 2 if renaming is not possible by libisofs
+                     (always: if demanded strip suffix is missing
+                              or if suffix makes name length > 255)
+               bit1= strip suffix rather than appending it
+*/
+int Xorriso_rename_suffix(struct XorrisO *xorriso, IsoNode *node, char *suffix,
+                          char *show_path, int flag)
+{
+ int ret, lo= 0, ls= 0, strip_suffix;
+ char *old_name= NULL, new_name[SfileadrL], *show_name;
+
+ strip_suffix= !!(flag & 2);
+ 
+ old_name= strdup((char *) iso_node_get_name(node));
+ show_name= old_name;
+ if(show_path != NULL)
+   if(show_path[0] != 0)
+     show_name= show_path;
+ lo= strlen(old_name);
+ ls= strlen(suffix);
+ if(strip_suffix) {
+   if(lo <= ls) {
+     /* refuse gracefully */
+     ret= 2; goto ex;
+   }
+   if(strcmp(old_name + lo - ls, suffix) != 0) {
+     ret= 2; goto ex;
+   }
+   if(lo > sizeof(new_name))
+     goto cannot_remove_suffix;
+   strcpy(new_name, old_name);
+   new_name[lo - ls]= 0;
+   ret = iso_node_set_name(node, new_name);
+   if (ret < 0) {
+     Xorriso_process_msg_queues(xorriso,0);
+     if (!(flag & 1))
+       Xorriso_report_iso_error(xorriso, "", ret,
+                            "Error when renaming ISO node", 0, "FAILURE", 1);
+cannot_remove_suffix:;
+     strcpy(xorriso->info_text, "-set_filter: Cannot remove suffix from ");
+     Text_shellsafe(show_name, xorriso->info_text, 1);
+     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0,
+                         (flag & 1) ? "WARNING" : "FAILURE", 0);
+     ret= 2 * (flag & 1); goto ex;
+   }
+ } else {
+   /* check whether suffix already present */
+   if(lo >= ls)
+     if(strcmp(old_name + lo - ls, suffix) == 0) {
+       /* refuse gracefully */
+       ret= 2; goto ex;
+     }
+   if(lo + ls > 255) {
+cannot_append_suffix:;
+     strcpy(xorriso->info_text, "-set_filter: Cannot append suffix to ");
+     Text_shellsafe(show_name, xorriso->info_text, 1);
+     strcat(xorriso->info_text, ". Left unfiltered.");
+     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0,
+                         (flag & 1) ? "WARNING" : "FAILURE", 0);
+     ret= 2 * (flag & 1); goto ex;
+   } 
+   sprintf(new_name, "%s%s", old_name, suffix);
+   ret = iso_node_set_name(node, new_name);
+   if (ret < 0) {
+     Xorriso_process_msg_queues(xorriso,0);
+     if (!(flag & 1))
+       Xorriso_report_iso_error(xorriso, "", ret,
+                              "Error when renaming ISO node", 0, "FAILURE", 1);
+     goto cannot_append_suffix;
+   }
+ }
+
+ ret= 1;
+ex:;
+ if(old_name != NULL)
+   free(old_name);
+ Xorriso_process_msg_queues(xorriso,0);
+ return(ret);
+}
+
+
 /*
  @param flag   bit0= return 2 if renaming is not possible
                bit1= print pacifier messages
@@ -9787,7 +9869,8 @@ int Xorriso_destroy_all_extf(struct XorrisO *xorriso, int flag)
 int Xorriso_set_filter(struct XorrisO *xorriso, void *in_node,
                        char *path, char *filter_name, int flag)
 {
- int ret, lo= 0, ls= 0, strip_suffix= 0, strip_filter= 0, filter_ret;
+ int ret, strip_suffix= 0, strip_filter= 0, filter_ret;
+ int explicit_suffix= 0;
  IsoNode *node;
  IsoFile *file;
  struct Xorriso_lsT *found_lst;
@@ -9795,6 +9878,12 @@ int Xorriso_set_filter(struct XorrisO *xorriso, void *in_node,
  IsoExternalFilterCommand *cmd = NULL;
  char *old_name= NULL, new_name[SfileadrL], *suffix= "";
 
+#ifndef NIX
+ IsoStream *stream;
+#else
+ int lo= 0, ls= 0;
+#endif
+
  new_name[0]= 0;
 
  node= (IsoNode *) in_node;
@@ -9817,6 +9906,7 @@ int Xorriso_set_filter(struct XorrisO *xorriso, void *in_node,
    if(strlen(filter_name) > 21) {
      strip_suffix= (filter_name[20] != '+');
      suffix= filter_name + 21;
+     explicit_suffix= 1;
    }
  } else {
    ret= Xorriso_lookup_extf(xorriso, filter_name, &found_lst, 0);
@@ -9835,6 +9925,18 @@ int Xorriso_set_filter(struct XorrisO *xorriso, void *in_node,
  }
 
  if(suffix[0]) {
+
+#ifndef NIX
+
+   /* >>> would need full iso_rr_path of node for showing */;
+
+   ret= Xorriso_rename_suffix(xorriso, node, suffix, path,
+                               (flag & 1) | (strip_suffix ? 2 : 0));
+   if(ret <= 0 || ret == 2)
+     goto ex;
+
+#else /* ! NIX */
+
    old_name= strdup((char *) iso_node_get_name(node));
    lo= strlen(old_name);
    ls= strlen(suffix);
@@ -9895,10 +9997,28 @@ cannot_append_suffix:;
        goto cannot_append_suffix;
      }
    }
+
+#endif /* ! NIX */
+
  }
 
  if(strip_filter) {
    while(1) {
+     if(!explicit_suffix) {
+       stream= iso_file_get_stream(file);
+       ret= iso_stream_get_external_filter(stream, &cmd, 0);
+       if(ret > 0) {
+         if(cmd->suffix[0]) {
+
+           /* >>> would need the current renaming state of path */;
+
+           ret= Xorriso_rename_suffix(xorriso, node, cmd->suffix, NULL,
+                                     (flag & 1) | (!(cmd->behavior & 8) << 1));
+           if(ret <= 0 || ret == 2)
+             goto ex;
+         }
+       }
+     }
      ret= iso_file_remove_filter(file, 0);
      if(ret != 1)
    break;
@@ -10004,6 +10124,13 @@ int Xorriso_external_filter(struct XorrisO *xorriso,
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
    return(0);
  } 
+ if((!(flag & 1)) && path[0] != '/') {
+   sprintf(xorriso->info_text,
+           "-external_filter : Given command path does not begin by '/' : ");
+   Text_shellsafe(path, xorriso->info_text, 1);
+   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+   return(0);
+ }
 
 
  delete= flag & 1;
@@ -10048,7 +10175,10 @@ int Xorriso_external_filter(struct XorrisO *xorriso,
      *what_next= 0;
      what_next++;
    }
-   if(strncmp(what, "suffix=", 7) == 0) {
+   if(strncmp(what, "default", 7) == 0) {
+     suffix= "";
+     behavior= 0;
+   } else if(strncmp(what, "suffix=", 7) == 0) {
      suffix= what + 7;
    } else if(strcmp(what, "remove_suffix") == 0) {
      behavior|= 8;