1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*++
Copyright 2006 - 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
efildrimage.c
Abstract:
Creates and EFILDR image.
This tool combines several PE Image files together using following format denoted as EBNF:
FILE := EFILDR_HEADER
EFILDR_IMAGE +
<PeImageFileContent> +
The order of EFILDR_IMAGE is same as the order of placing PeImageFileContent.
Revision History
--*/
#include <windows.h>
#include <stdio.h>
#include "Tiano.h"
#define MAX_PE_IMAGES 63
#define FILE_TYPE_FIXED_LOADER 0
#define FILE_TYPE_RELOCATABLE_PE_IMAGE 1
typedef struct {
UINT32 CheckSum;
UINT32 Offset;
UINT32 Length;
UINT8 FileName[52];
} EFILDR_IMAGE;
typedef struct {
UINT32 Signature;
UINT32 HeaderCheckSum;
UINT32 FileLength;
UINT32 NumberOfImages;
} EFILDR_HEADER;
VOID
Usage (
VOID
)
{
printf ("Usage: EfiLdrImage OutImage LoaderImage PeImage1 PeImage2 ... PeImageN");
exit (1);
}
ULONG
FCopyFile (
FILE *in,
FILE *out
)
/*++
Routine Description:
Write all the content of input file to output file.
Arguments:
in - input file pointer
out - output file pointer
Return:
ULONG : file size of input file
--*/
{
ULONG filesize, offset, length;
UCHAR Buffer[8*1024];
fseek (in, 0, SEEK_END);
filesize = ftell(in);
fseek (in, 0, SEEK_SET);
offset = 0;
while (offset < filesize) {
length = sizeof(Buffer);
if (filesize-offset < length) {
length = filesize-offset;
}
fread (Buffer, length, 1, in);
fwrite (Buffer, length, 1, out);
offset += length;
}
return filesize;
}
int
main (
int argc,
char *argv[]
)
/*++
Routine Description:
Arguments:
Returns:
--*/
{
ULONG i;
ULONG filesize;
FILE *fpIn, *fpOut;
EFILDR_HEADER EfiLdrHeader;
EFILDR_IMAGE EfiLdrImage[MAX_PE_IMAGES];
if (argc < 4) {
Usage();
}
//
// Open output file for write
//
fpOut = fopen(argv[1], "w+b");
if (!fpOut) {
printf ("efildrimage: Could not open output file %s\n", argv[1]);
exit(1);
}
memset (&EfiLdrHeader, 0, sizeof (EfiLdrHeader));
memset (&EfiLdrImage, 0, sizeof (EFILDR_IMAGE) * (argc - 2));
memcpy (&EfiLdrHeader.Signature, "EFIL", 4);
EfiLdrHeader.FileLength = sizeof(EFILDR_HEADER) + sizeof(EFILDR_IMAGE)*(argc-2);
//
// Skip the file header first
//
fseek (fpOut, EfiLdrHeader.FileLength, SEEK_SET);
//
// copy all the input files to the output file
//
for(i=2;i<(ULONG)argc;i++) {
//
// Copy the content of PeImage file to output file
//
fpIn = fopen (argv[i], "rb");
if (!fpIn) {
printf ("efildrimage: Could not open input file %s\n", argv[i-2]);
exit(1);
}
filesize = FCopyFile (fpIn, fpOut);
fclose(fpIn);
//
// And in the same time update the EfiLdrHeader and EfiLdrImage array
//
EfiLdrImage[i-2].Offset = EfiLdrHeader.FileLength;
EfiLdrImage[i-2].Length = filesize;
strncpy (EfiLdrImage[i-2].FileName, argv[i], sizeof (EfiLdrImage[i-2].FileName) - 1);
EfiLdrHeader.FileLength += filesize;
EfiLdrHeader.NumberOfImages++;
}
//
// Write the image header to the output file finally
//
fseek (fpOut, 0, SEEK_SET);
fwrite (&EfiLdrHeader, sizeof(EFILDR_HEADER) , 1, fpOut);
fwrite (&EfiLdrImage , sizeof(EFILDR_IMAGE)*(argc-2), 1, fpOut);
fclose (fpOut);
printf ("Created %s\n", argv[1]);
return 0;
}
|
