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