/*
* Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <Windows.h>
#include <io.h>
#include <stdio.h>
#include <string.h>
#include <malloc.h>
void report_error()
{
LPVOID lpMsgBuf;
DWORD dw = GetLastError();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dw,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &lpMsgBuf,
0,
NULL);
fprintf(stderr,
"Could not start process! Failed with error %d: %s\n",
dw, lpMsgBuf);
LocalFree(lpMsgBuf);
}
/*
* Test if pos points to /cygdrive/_/ where _ can
* be any character.
*/
int is_cygdrive_here(int pos, char *in, int len)
{
// Length of /cygdrive/c/ is 12
if (pos+12 > len) return 0;
if (in[pos+11]=='/' &&
in[pos+9]=='/' &&
in[pos+8]=='e' &&
in[pos+7]=='v' &&
in[pos+6]=='i' &&
in[pos+5]=='r' &&
in[pos+4]=='d' &&
in[pos+3]=='g' &&
in[pos+2]=='y' &&
in[pos+1]=='c' &&
in[pos+0]=='/') {
return 1;
}
return 0;
}
/*
* Replace /cygdrive/_/ with _:/
* Works in place since drive letter is always
* shorter than /cygdrive/
*/
char *replace_cygdrive_cygwin(char *in)
{
int len = strlen(in);
char *out = malloc(len+1);
int i,j;
if (len < 12) {
strcpy(out, in);
return out;
}
for (i = 0, j = 0; i<len;) {
if (is_cygdrive_here(i, in, len)) {
out[j++] = in[i+10];
out[j++] = ':';
i+=11;
} else {
out[j] = in[i];
i++;
j++;
}
}
out[j] = 0;
return out;
}
void append(char **b, size_t *bl, size_t *u, char *add, size_t addlen)
{
while ( (addlen+*u+1) > *bl) {
*bl *= 2;
*b = realloc(*b, *bl);
}
memcpy(*b+*u, add, addlen);
*u += addlen;
}
/*
* Creates a new string from in where the first occurance of sub is
* replaced by rep.
*/
char *replace_substring(char *in, char *sub, char *rep)
{
int in_len = strlen(in);
int sub_len = strlen(sub);
int rep_len = strlen(rep);
char *out = malloc(in_len - sub_len + rep_len + 1);
char *p;
if (!(p = strstr(in, sub))) {
// If sub isn't a substring of in, just return in.
return in;
}
// Copy characters from beginning of in to start of sub.
strncpy(out, in, p - in);
out[p - in] = '\0';
sprintf(out + (p - in), "%s%s", rep, p + sub_len);
return out;
}
char* msys_path_list; // @-separated list of paths prefix to look for
char* msys_path_list_end; // Points to last \0 in msys_path_list.
void setup_msys_path_list(char* argument)
{
char* p;
char* drive_letter_pos;
msys_path_list = strdup(&argument[2]);
msys_path_list_end = &msys_path_list[strlen(msys_path_list)];
// Convert all at-sign (@) in path list to \0.
// @ was chosen as separator to minimize risk of other tools messing around with it
p = msys_path_list;
do {
if (p[1] == ':') {
// msys has mangled our path list, restore it from c:/... to /c/...
drive_letter_pos = p+1;
*drive_letter_pos = *p;
*p = '/';
}
// Look for an @ in the list
p = strchr(p, '@');
if (p != NULL) {
*p = '\0';
p++;
}
} while (p != NULL);
}
char *replace_cygdrive_msys(char *in)
{
char* str;
char* prefix;
char* p;
str = strdup(in);
// For each prefix in the path list, search for it and replace /c/... with c:/...
for (prefix = msys_path_list; prefix < msys_path_list_end && prefix != NULL; prefix += strlen(prefix)+1) {
p=str;
while ((p = strstr(p, prefix))) {
char* drive_letter = p+1;
*p = *drive_letter;
*drive_letter = ':';
p++;
}
}
return str;
}
char*(*replace_cygdrive)(char *in) = NULL;
char *files_to_delete[1024];
int num_files_to_delete = 0;
char *fix_at_file(char *in)
{
char *tmpdir;
char name[2048];
char *atname;
char *buffer;
size_t buflen=65536;
size_t used=0;
size_t len;
int rc;
FILE *atout;
FILE *atin;
char block[2048];
size_t blocklen;
char *fixed;
atin = fopen(in+1, "r");
if (atin == NULL) {
fprintf(stderr, "Could not read at file %s\n", in+1);
exit(-1);
}
tmpdir = getenv("TMP");
if (tmpdir == NULL) {
tmpdir = "c:/cygwin/tmp";
}
_snprintf(name, sizeof(name), "%s\\atfile_XXXXXX", tmpdir);
rc = _mktemp_s(name, strlen(name)+1);
if (rc) {
fprintf(stderr, "Could not create temporary file name for at file!\n");
exit(-1);
}
atout = fopen(name, "w");
if (atout == NULL) {
fprintf(stderr, "Could not open temporary file for writing! %s\n", name);
exit(-1);
}
buffer = malloc(buflen);
while((blocklen = fread(block,1,sizeof(block),atin)) > 0) {
append(&buffer, &buflen, &used, block, blocklen);
}
buffer[used] = 0;
if (getenv("DEBUG_FIXPATH") != NULL) {
fprintf(stderr, "fixpath input from @-file %s: %s\n", &in[1], buffer);
}
fixed = replace_cygdrive(buffer);
if (getenv("DEBUG_FIXPATH") != NULL) {
fprintf(stderr, "fixpath converted to @-file %s is: %s\n", name, fixed);
}
fwrite(fixed, strlen(fixed), 1, atout);
fclose(atin);
fclose(atout);
free(fixed);
free(buffer);
files_to_delete[num_files_to_delete] = malloc(strlen(name)+1);
strcpy(files_to_delete[num_files_to_delete], name);
num_files_to_delete++;
atname = malloc(strlen(name)+2);
atname[0] = '@';
strcpy(atname+1, name);
return atname;
}
int main(int argc, char **argv)
{
STARTUPINFO si;
PROCESS_INFORMATION pi;
unsigned short rc;
char *new_at_file;
char *old_at_file;
char *line;
int i;
DWORD exitCode;
if (argc<3 || argv[1][0] != '-' || (argv[1][1] != 'c' && argv[1][1] != 'm')) {
fprintf(stderr, "Usage: fixpath -c|m<path@path@...> /cygdrive/c/WINDOWS/notepad.exe /cygdrive/c/x/test.txt\n");
exit(0);
}
if (getenv("DEBUG_FIXPATH") != NULL) {
fprintf(stderr, "fixpath input line >%s<\n", strstr(GetCommandLine(), argv[1]));
}
if (argv[1][1] == 'c' && argv[1][2] == '\0') {
if (getenv("DEBUG_FIXPATH") != NULL) {
fprintf(stderr, "using cygwin mode\n");
}
replace_cygdrive = replace_cygdrive_cygwin;
} else if (argv[1][1] == 'm') {
if (getenv("DEBUG_FIXPATH") != NULL) {
fprintf(stderr, "using msys mode, with path list: %s\n", &argv[1][2]);
}
setup_msys_path_list(argv[1]);
replace_cygdrive = replace_cygdrive_msys;
} else {
fprintf(stderr, "Unknown mode: %s\n", argv[1]);
exit(-1);
}
line = replace_cygdrive(strstr(GetCommandLine(), argv[2]));
for (i=1; i<argc; ++i) {
if (argv[i][0] == '@') {
// Found at-file! Fix it!
old_at_file = replace_cygdrive(argv[i]);
new_at_file = fix_at_file(old_at_file);
line = replace_substring(line, old_at_file, new_at_file);
}
}
if (getenv("DEBUG_FIXPATH") != NULL) {
fprintf(stderr, "fixpath converted line >%s<\n", line);
}
ZeroMemory(&si,sizeof(si));
si.cb=sizeof(si);
ZeroMemory(&pi,sizeof(pi));
rc = CreateProcess(NULL,
line,
0,
0,
TRUE,
0,
0,
0,
&si,
&pi);
if(!rc) {
// Could not start process for some reason. Try to report why:
report_error();
exit(rc);
}
WaitForSingleObject(pi.hProcess,INFINITE);
GetExitCodeProcess(pi.hProcess,&exitCode);
if (getenv("DEBUG_FIXPATH") != NULL) {
for (i=0; i<num_files_to_delete; ++i) {
fprintf(stderr, "Not deleting temporary fixpath file %s\n",
files_to_delete[i]);
}
}
else {
for (i=0; i<num_files_to_delete; ++i) {
remove(files_to_delete[i]);
}
}
exit(exitCode);
}