Adding upstream version 1.47.0.upstream/1.47.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 565 insertions, 0 deletions

diff --git a/ext2ed/file_com.c b/ext2ed/file_com.c
new file mode 100644
index 0000000..d667959
--- /dev/null
+++ b/ext2ed/file_com.c
@@ -0,0 +1,565 @@
+/*
+
+/usr/src/ext2ed/file_com.c
+
+A part of the extended file system 2 disk editor.
+
+----------------------------
+Commands which handle a file
+----------------------------
+
+First written on: April 18 1995
+
+Copyright (C) 1995 Gadi Oxman
+
+*/
+
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "ext2ed.h"
+
+int init_file_info (void)
+
+{
+	struct ext2_inode *ptr;
+
+	ptr=&type_data.u.t_ext2_inode;
+
+	file_info.inode_ptr=ptr;
+	file_info.inode_offset=device_offset;
+
+	file_info.global_block_num=ptr->i_block [0];
+	file_info.global_block_offset=ptr->i_block [0]*file_system_info.block_size;
+	file_info.block_num=0;
+	file_info.blocks_count=(ptr->i_size+file_system_info.block_size-1)/file_system_info.block_size;
+	file_info.file_offset=0;
+	file_info.file_length=ptr->i_size;
+	file_info.level=0;
+	file_info.offset_in_block=0;
+
+	file_info.display=HEX;
+
+	low_read (file_info.buffer,file_system_info.block_size,file_info.global_block_offset);
+
+	return (1);
+}
+
+
+void type_file___inode (char *command_line)
+
+{
+	dispatch ("settype ext2_inode");
+}
+
+void type_file___show (char *command_line)
+
+{
+	if (file_info.display==HEX)
+		file_show_hex ();
+	if (file_info.display==TEXT)
+		file_show_text ();
+}
+
+void type_file___nextblock (char *command_line)
+
+{
+	long block_offset=1;
+	char *ptr,buffer [80];
+
+	ptr=parse_word (command_line,buffer);
+
+	if (*ptr!=0) {
+		ptr=parse_word (ptr,buffer);
+		block_offset*=atol (buffer);
+	}
+
+	if (file_info.block_num+block_offset >= file_info.blocks_count) {
+		wprintw (command_win,"Error - Block offset out of range\n");wrefresh (command_win);
+		return;
+	}
+
+	file_info.block_num+=block_offset;
+	file_info.global_block_num=file_block_to_global_block (file_info.block_num,&file_info);
+	file_info.global_block_offset=file_info.global_block_num*file_system_info.block_size;
+	file_info.file_offset=file_info.block_num*file_system_info.block_size;
+
+	low_read (file_info.buffer,file_system_info.block_size,file_info.global_block_offset);
+
+	strcpy (buffer,"show");dispatch (buffer);
+}
+
+void type_file___next (char *command_line)
+
+{
+	int offset=1;
+	char *ptr,buffer [80];
+
+	ptr=parse_word (command_line,buffer);
+
+	if (*ptr!=0) {
+		ptr=parse_word (ptr,buffer);
+		offset*=atol (buffer);
+	}
+
+	if (file_info.offset_in_block+offset < file_system_info.block_size) {
+		file_info.offset_in_block+=offset;
+		sprintf (buffer,"show");dispatch (buffer);
+	}
+
+	else {
+		wprintw (command_win,"Error - Offset out of block\n");refresh_command_win ();
+	}
+}
+
+void type_file___offset (char *command_line)
+
+{
+	unsigned long offset;
+	char *ptr,buffer [80];
+
+	ptr=parse_word (command_line,buffer);
+
+	if (*ptr!=0) {
+		ptr=parse_word (ptr,buffer);
+		offset=atol (buffer);
+	}
+	else {
+		wprintw (command_win,"Error - Argument not specified\n");refresh_command_win ();
+		return;
+	}
+
+	if (offset < file_system_info.block_size) {
+		file_info.offset_in_block=offset;
+		sprintf (buffer,"show");dispatch (buffer);
+	}
+
+	else {
+		wprintw (command_win,"Error - Offset out of block\n");refresh_command_win ();
+	}
+}
+
+void type_file___prev (char *command_line)
+
+{
+	int offset=1;
+	char *ptr,buffer [80];
+
+	ptr=parse_word (command_line,buffer);
+
+	if (*ptr!=0) {
+		ptr=parse_word (ptr,buffer);
+		offset*=atol (buffer);
+	}
+
+	if (file_info.offset_in_block-offset >= 0) {
+		file_info.offset_in_block-=offset;
+		sprintf (buffer,"show");dispatch (buffer);
+	}
+
+	else {
+		wprintw (command_win,"Error - Offset out of block\n");refresh_command_win ();
+	}
+}
+
+void type_file___prevblock (char *command_line)
+
+{
+	long block_offset=1;
+	char *ptr,buffer [80];
+
+	ptr=parse_word (command_line,buffer);
+
+	if (*ptr!=0) {
+		ptr=parse_word (ptr,buffer);
+		block_offset*=atol (buffer);
+	}
+
+	if (file_info.block_num-block_offset < 0) {
+		wprintw (command_win,"Error - Block offset out of range\n");wrefresh (command_win);
+		return;
+	}
+
+	file_info.block_num-=block_offset;
+	file_info.global_block_num=file_block_to_global_block (file_info.block_num,&file_info);
+	file_info.global_block_offset=file_info.global_block_num*file_system_info.block_size;
+	file_info.file_offset=file_info.block_num*file_system_info.block_size;
+
+	low_read (file_info.buffer,file_system_info.block_size,file_info.global_block_offset);
+
+	strcpy (buffer,"show");dispatch (buffer);
+}
+
+void type_file___block (char *command_line)
+
+{
+	long block_offset=1;
+	char *ptr,buffer [80];
+
+	ptr=parse_word (command_line,buffer);
+
+	if (*ptr==0) {
+		wprintw (command_win,"Error - Invalid arguments\n");wrefresh (command_win);
+		return;
+	}
+
+	ptr=parse_word (ptr,buffer);
+	block_offset=atol (buffer);
+
+	if (block_offset < 0 || block_offset >= file_info.blocks_count) {
+		wprintw (command_win,"Error - Block offset out of range\n");wrefresh (command_win);
+		return;
+	}
+
+	file_info.block_num=block_offset;
+	file_info.global_block_num=file_block_to_global_block (file_info.block_num,&file_info);
+	file_info.global_block_offset=file_info.global_block_num*file_system_info.block_size;
+	file_info.file_offset=file_info.block_num*file_system_info.block_size;
+
+	low_read (file_info.buffer,file_system_info.block_size,file_info.global_block_offset);
+
+	strcpy (buffer,"show");dispatch (buffer);
+}
+
+void type_file___display (char *command_line)
+
+{
+	char *ptr,buffer [80];
+
+	ptr=parse_word (command_line,buffer);
+	if (*ptr==0)
+		strcpy (buffer,"hex");
+	else
+		ptr=parse_word (ptr,buffer);
+
+	if (strcasecmp (buffer,"hex")==0) {
+		wprintw (command_win,"Display set to hex\n");wrefresh (command_win);
+		file_info.display=HEX;
+		sprintf (buffer,"show");dispatch (buffer);
+	}
+
+	else if (strcasecmp (buffer,"text")==0) {
+		wprintw (command_win,"Display set to text\n");wrefresh (command_win);
+		file_info.display=TEXT;
+		sprintf (buffer,"show");dispatch (buffer);
+	}
+
+	else {
+		wprintw (command_win,"Error - Invalid arguments\n");wrefresh (command_win);
+	}
+}
+
+void file_show_hex (void)
+
+{
+	long offset=0,l,i;
+	unsigned char *ch_ptr;
+
+	/* device_offset and type_data points to the inode */
+
+	show_pad_info.line=0;
+
+	wmove (show_pad,0,0);
+	ch_ptr=file_info.buffer;
+	for (l=0;l<file_system_info.block_size/16;l++) {
+		if (file_info.file_offset+offset>file_info.file_length-1) break;
+		wprintw (show_pad,"%08ld :  ",offset);
+		for (i=0;i<16;i++) {
+
+			if (file_info.file_offset+offset+i>file_info.file_length-1) {
+				wprintw (show_pad," ");
+			}
+
+			else {
+				if (file_info.offset_in_block==offset+i)
+					wattrset (show_pad,A_REVERSE);
+
+				if (ch_ptr [i]>=' ' && ch_ptr [i]<='z')
+					wprintw (show_pad,"%c",ch_ptr [i]);
+				else
+					wprintw (show_pad,".");
+
+				if (file_info.offset_in_block==offset+i)
+					wattrset (show_pad,A_NORMAL);
+			}
+		}
+
+		wprintw (show_pad,"   ");
+		for (i=0;i<16;i++) {
+			if (file_info.file_offset+offset+i>file_info.file_length-1) break;
+			if (file_info.offset_in_block==offset+i)
+				wattrset (show_pad,A_REVERSE);
+
+			wprintw (show_pad,"%02x",ch_ptr [i]);
+
+			if (file_info.offset_in_block==offset+i) {
+				wattrset (show_pad,A_NORMAL);
+				show_pad_info.line=l-l % show_pad_info.display_lines;
+			}
+
+			wprintw (show_pad," ");
+
+		}
+
+		wprintw (show_pad,"\n");
+		offset+=i;
+		ch_ptr+=i;
+	}
+
+	show_pad_info.max_line=l-1;
+
+	refresh_show_pad ();
+
+	show_status ();
+}
+
+void file_show_text (void)
+
+{
+	long offset=0,last_offset,l=0,cols=0;
+	unsigned char *ch_ptr;
+
+	/* device_offset and type_data points to the inode */
+
+	show_pad_info.line=0;
+	wmove (show_pad,0,0);
+	ch_ptr=file_info.buffer;
+
+	last_offset=file_system_info.block_size-1;
+
+	if (file_info.file_offset+last_offset > file_info.file_length-1)
+		last_offset=file_info.file_length-1-file_info.file_offset;
+
+	while ( (offset <= last_offset) && l<SHOW_PAD_LINES) {
+
+		if (cols==SHOW_PAD_COLS-1) {
+			wprintw (show_pad,"\n");
+			l++;cols=0;
+		}
+
+
+		if (file_info.offset_in_block==offset)
+			wattrset (show_pad,A_REVERSE);
+
+		if (*ch_ptr >= ' ' && *ch_ptr <= 'z')
+			wprintw (show_pad,"%c",*ch_ptr);
+
+
+		else {
+			if (*ch_ptr == 0xa) {
+				wprintw (show_pad,"\n");
+				l++;cols=0;
+			}
+
+			else if (*ch_ptr == 0x9)
+				wprintw (show_pad,"    ");
+
+			else
+				wprintw (show_pad,".");
+		}
+
+		if (file_info.offset_in_block==offset) {
+			wattrset (show_pad,A_NORMAL);
+			show_pad_info.line=l-l % show_pad_info.display_lines;
+		}
+
+
+		offset++;cols++;ch_ptr++;
+	}
+
+	wprintw (show_pad,"\n");
+	show_pad_info.max_line=l;
+
+	refresh_show_pad ();
+
+	show_status ();
+}
+
+void show_status (void)
+
+{
+	long inode_num;
+
+	werase (show_win);wmove (show_win,0,0);
+	wprintw (show_win,"File contents. Block %ld. ",file_info.global_block_num);
+	wprintw (show_win,"File block %ld of %ld. ",file_info.block_num,file_info.blocks_count-1);
+	wprintw (show_win,"File Offset %ld of %ld.",file_info.file_offset,file_info.file_length-1);
+
+	wmove (show_win,1,0);
+	inode_num=inode_offset_to_inode_num (file_info.inode_offset);
+	wprintw (show_win,"File inode %ld. Indirection level %ld.",inode_num,file_info.level);
+
+	refresh_show_win ();
+}
+
+void type_file___remember (char *command_line)
+
+{
+	int found=0;
+	long entry_num;
+	char *ptr,buffer [80];
+	struct struct_descriptor *descriptor_ptr;
+
+	ptr=parse_word (command_line,buffer);
+
+	if (*ptr==0) {
+		wprintw (command_win,"Error - Argument not specified\n");wrefresh (command_win);
+		return;
+	}
+
+	ptr=parse_word (ptr,buffer);
+
+	entry_num=remember_lifo.entries_count++;
+	if (entry_num>REMEMBER_COUNT-1) {
+		entry_num=0;
+		remember_lifo.entries_count--;
+	}
+
+	descriptor_ptr=first_type;
+	while (descriptor_ptr!=NULL && !found) {
+		if (strcmp (descriptor_ptr->name,"ext2_inode")==0)
+			found=1;
+		else
+			descriptor_ptr=descriptor_ptr->next;
+	}
+
+
+	remember_lifo.offset [entry_num]=device_offset;
+	remember_lifo.type [entry_num]=descriptor_ptr;
+	strcpy (remember_lifo.name [entry_num],buffer);
+
+	wprintw (command_win,"Object %s in Offset %ld remembered as %s\n",descriptor_ptr->name,device_offset,buffer);
+	wrefresh (command_win);
+}
+
+void type_file___set (char *command_line)
+
+{
+	unsigned char tmp;
+	char *ptr,buffer [80],*ch_ptr;
+	int mode=HEX;
+
+	ptr=parse_word (command_line,buffer);
+	if (*ptr==0) {
+		wprintw (command_win,"Error - Argument not specified\n");refresh_command_win ();return;
+	}
+
+	ptr=parse_word (ptr,buffer);
+
+	if (strcasecmp (buffer,"text")==0) {
+		mode=TEXT;
+		strcpy (buffer,ptr);
+	}
+
+	else if (strcasecmp (buffer,"hex")==0) {
+		mode=HEX;
+		ptr=parse_word (ptr,buffer);
+	}
+
+	if (*buffer==0) {
+		wprintw (command_win,"Error - Data not specified\n");refresh_command_win ();return;
+	}
+
+	if (mode==HEX) {
+		do {
+			tmp=(unsigned char) strtol (buffer,NULL,16);
+			file_info.buffer [file_info.offset_in_block]=tmp;
+			file_info.offset_in_block++;
+			ptr=parse_word (ptr,buffer);
+			if (file_info.offset_in_block==file_system_info.block_size) {
+				if (*ptr) {
+					wprintw (command_win,"Error - Ending offset outside block, only partial string changed\n");
+					refresh_command_win ();
+				}
+				file_info.offset_in_block--;
+			}
+		} while (*buffer) ;
+	}
+
+	else {
+		ch_ptr=buffer;
+		while (*ch_ptr) {
+			tmp=(unsigned char) *ch_ptr++;
+			file_info.buffer [file_info.offset_in_block]=tmp;
+			file_info.offset_in_block++;
+			if (file_info.offset_in_block==file_system_info.block_size) {
+				if (*ch_ptr) {
+					wprintw (command_win,"Error - Ending offset outside block, only partial string changed\n");
+					refresh_command_win ();
+				}
+				file_info.offset_in_block--;
+			}
+		}
+	}
+
+	strcpy (buffer,"show");dispatch (buffer);
+}
+
+void type_file___writedata (char *command_line)
+
+{
+	low_write (file_info.buffer,file_system_info.block_size,file_info.global_block_offset);
+	return;
+}
+
+long file_block_to_global_block (long file_block,struct struct_file_info *file_info_ptr)
+
+{
+	long last_direct,last_indirect,last_dindirect;
+
+	last_direct=EXT2_NDIR_BLOCKS-1;
+	last_indirect=last_direct+file_system_info.block_size/4;
+	last_dindirect=last_indirect+(file_system_info.block_size/4)*(file_system_info.block_size/4);
+
+	if (file_block <= last_direct) {
+		file_info_ptr->level=0;
+		return (file_info_ptr->inode_ptr->i_block [file_block]);
+	}
+
+	if (file_block <= last_indirect) {
+		file_info_ptr->level=1;
+		file_block=file_block-last_direct-1;
+		return (return_indirect (file_info_ptr->inode_ptr->i_block [EXT2_IND_BLOCK],file_block));
+	}
+
+	if (file_block <= last_dindirect) {
+		file_info_ptr->level=2;
+		file_block=file_block-last_indirect-1;
+		return (return_dindirect (file_info_ptr->inode_ptr->i_block [EXT2_DIND_BLOCK],file_block));
+	}
+
+	file_info_ptr->level=3;
+	file_block=file_block-last_dindirect-1;
+	return (return_tindirect (file_info_ptr->inode_ptr->i_block [EXT2_TIND_BLOCK],file_block));
+}
+
+long return_indirect (long table_block,long block_num)
+
+{
+	long block_table [EXT2_MAX_BLOCK_SIZE/4];
+
+	low_read ((char *) block_table,file_system_info.block_size,table_block*file_system_info.block_size);
+	return (block_table [block_num]);
+}
+
+long return_dindirect (long table_block,long block_num)
+
+{
+	long f_indirect;
+
+	f_indirect=block_num/(file_system_info.block_size/4);
+	f_indirect=return_indirect (table_block,f_indirect);
+	return (return_indirect (f_indirect,block_num%(file_system_info.block_size/4)));
+}
+
+long return_tindirect (long table_block,long block_num)
+
+{
+	long s_indirect;
+
+	s_indirect=block_num/((file_system_info.block_size/4)*(file_system_info.block_size/4));
+	s_indirect=return_indirect (table_block,s_indirect);
+	return (return_dindirect (s_indirect,block_num%((file_system_info.block_size/4)*(file_system_info.block_size/4))));
+}