[PEFIXUP] Improve error messages

This commit is contained in:
Mark Jansen 2020-04-18 15:18:38 +02:00
parent bf54369dbb
commit 2157838572
No known key found for this signature in database
GPG key ID: B39240EE84BEAE8B

View file

@ -21,6 +21,9 @@
#include <pecoff.h>
#include "../../dll/win32/dbghelp/compat.h"
static const char* g_ApplicationName;
static const char* g_Target;
void *rva_to_ptr(unsigned char *buffer, PIMAGE_NT_HEADERS nt_header, DWORD rva)
{
unsigned int i;
@ -38,6 +41,16 @@ void *rva_to_ptr(unsigned char *buffer, PIMAGE_NT_HEADERS nt_header, DWORD rva)
return NULL;
}
static void error(const char* message, ...)
{
va_list args;
fprintf(stderr, "%s ERROR: '%s': ", g_ApplicationName, g_Target);
va_start(args, message);
fprintf(stderr, message, args);
va_end(args);
}
static void fix_checksum(unsigned char *buffer, long len, PIMAGE_NT_HEADERS nt_header)
{
@ -93,16 +106,16 @@ static int add_loadconfig(unsigned char *buffer, PIMAGE_NT_HEADERS nt_header)
}
}
fprintf(stderr, "Export '_load_config_used' not found\n");
error("Export '_load_config_used' not found\n");
}
else
{
fprintf(stderr, "Invalid rva for export directory\n");
error("Invalid rva for export directory\n");
}
}
else
{
fprintf(stderr, "No export directory\n");
error("No export directory\n");
}
return 1;
@ -116,17 +129,21 @@ int main(int argc, char **argv)
PIMAGE_DOS_HEADER dos_header;
int result = 1;
g_ApplicationName = argv[0];
if (argc < 2)
{
printf("Usage: %s <filename>\n", argv[0]);
printf("Usage: %s <filename>\n", g_ApplicationName);
return 1;
}
g_Target = argv[1];
/* Read the whole file to memory. */
file = fopen(argv[1], "r+b");
if (!file)
{
fprintf(stderr, "Can't open '%s'.\n", argv[1]);
fprintf(stderr, "%s ERROR: Can't open '%s'.\n", g_ApplicationName, g_Target);
return 1;
}
@ -135,7 +152,7 @@ int main(int argc, char **argv)
if (len < sizeof(IMAGE_DOS_HEADER))
{
fclose(file);
fprintf(stderr, "'%s' isn't a PE image (too short)\n", argv[1]);
error("Image size too small to be a PE image\n");
return 1;
}
@ -145,7 +162,7 @@ int main(int argc, char **argv)
if (buffer == NULL)
{
fclose(file);
fprintf(stderr, "Not enough memory available.\n");
error("Not enough memory available: (Needed %u bytes).\n", len + 1);
return 1;
}
@ -181,12 +198,12 @@ int main(int argc, char **argv)
}
else
{
fprintf(stderr, "'%s' Invalid PE signature: %x\n", argv[1], nt_header->Signature);
error("Invalid PE signature: %x\n", nt_header->Signature);
}
}
else
{
fprintf(stderr, "'%s' Invalid DOS signature: %x\n", argv[1], dos_header->e_magic);
error("Invalid DOS signature: %x\n", dos_header->e_magic);
}
free(buffer);