common/src/fixpath.c - edge/openjdk - Git at Google

 /*
  * 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);
 }
	/*
	* 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);
	}