NetBSD-5.0.2/usr.bin/error/touch.c
/* $NetBSD: touch.c,v 1.16 2007/10/05 07:27:42 lukem Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)touch.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: touch.c,v 1.16 2007/10/05 07:27:42 lukem Exp $");
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <ctype.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include <stdarg.h>
#include "error.h"
#include "pathnames.h"
/*
* Iterate through errors
*/
#define EITERATE(p, fv, i) for (p = fv[i]; p < fv[i+1]; p++)
#define ECITERATE(ei, p, lb) for (ei = lb; p = errors[ei],ei < nerrors; ei++)
#define FILEITERATE(fi, lb) for (fi = lb; fi <= nfiles; fi++)
int touchstatus = Q_YES;
extern char *suffixlist;
void
findfiles(int nerrors, Eptr *errors, int *r_nfiles, Eptr ***r_files)
{
int nfiles;
Eptr **files;
char *name;
int ei;
int fi;
Eptr errorp;
nfiles = countfiles(errors);
files = (Eptr**)Calloc(nfiles + 3, sizeof (Eptr*));
touchedfiles = (boolean *)Calloc(nfiles+3, sizeof(boolean));
/*
* Now, partition off the error messages
* into those that are synchronization, discarded or
* not specific to any file, and those that were
* nulled or true errors.
*/
files[0] = &errors[0];
ECITERATE(ei, errorp, 0){
if ( ! (NOTSORTABLE(errorp->error_e_class)))
break;
}
/*
* Now, and partition off all error messages
* for a given file.
*/
files[1] = &errors[ei];
touchedfiles[0] = touchedfiles[1] = FALSE;
name = "\1";
fi = 1;
ECITERATE(ei, errorp, ei){
if ( (errorp->error_e_class == C_NULLED)
|| (errorp->error_e_class == C_TRUE) ){
if (strcmp(errorp->error_text[0], name) != 0){
name = errorp->error_text[0];
touchedfiles[fi] = FALSE;
files[fi] = &errors[ei];
fi++;
}
}
}
files[fi] = &errors[nerrors];
*r_nfiles = nfiles;
*r_files = files;
}
int
countfiles(Eptr *errors)
{
char *name;
int ei;
Eptr errorp;
int nfiles;
nfiles = 0;
name = "\1";
ECITERATE(ei, errorp, 0){
if (SORTABLE(errorp->error_e_class)){
if (strcmp(errorp->error_text[0],name) != 0){
nfiles++;
name = errorp->error_text[0];
}
}
}
return(nfiles);
}
char *class_table[] = {
/*C_UNKNOWN 0 */ "Unknown",
/*C_IGNORE 1 */ "ignore",
/*C_SYNC 2 */ "synchronization",
/*C_DISCARD 3 */ "discarded",
/*C_NONSPEC 4 */ "non specific",
/*C_THISFILE 5 */ "specific to this file",
/*C_NULLED 6 */ "nulled",
/*C_TRUE 7 */ "true",
/*C_DUPL 8 */ "duplicated"
};
int class_count[C_LAST - C_FIRST] = {0};
void
filenames(int nfiles, Eptr **files)
{
int fi;
char *sep = " ";
int someerrors;
/*
* first, simply dump out errors that
* don't pertain to any file
*/
someerrors = nopertain(files);
if (nfiles){
someerrors++;
if (terse)
fprintf(stdout, "%d file%s", nfiles, plural(nfiles));
else
fprintf(stdout, "%d file%s contain%s errors",
nfiles, plural(nfiles), verbform(nfiles));
if (!terse){
FILEITERATE(fi, 1){
fprintf(stdout, "%s\"%s\" (%d)",
sep, (*files[fi])->error_text[0],
(int)(files[fi+1] - files[fi]));
sep = ", ";
}
}
fprintf(stdout, "\n");
}
if (!someerrors)
fprintf(stdout, "No errors.\n");
}
/*
* Dump out errors that don't pertain to any file
*/
int
nopertain(Eptr **files)
{
int type;
int someerrors = 0;
Eptr *erpp;
Eptr errorp;
if (files[1] - files[0] <= 0)
return(0);
for(type = C_UNKNOWN; NOTSORTABLE(type); type++){
if (class_count[type] <= 0)
continue;
if (type > C_SYNC)
someerrors++;
if (terse){
fprintf(stdout, "\t%d %s errors NOT PRINTED\n",
class_count[type], class_table[type]);
} else {
fprintf(stdout, "\n\t%d %s errors follow\n",
class_count[type], class_table[type]);
EITERATE(erpp, files, 0){
errorp = *erpp;
if (errorp->error_e_class == type){
errorprint(stdout, errorp, TRUE);
}
}
}
}
return(someerrors);
}
extern boolean notouch;
boolean
touchfiles(int nfiles, Eptr **files, int *r_edargc, char ***r_edargv)
{
char *name;
Eptr errorp;
int fi;
Eptr *erpp;
int ntrueerrors;
boolean scribbled;
int n_pissed_on; /* # of file touched*/
int spread;
FILEITERATE(fi, 1){
name = (*files[fi])->error_text[0];
spread = files[fi+1] - files[fi];
fprintf(stdout, terse
? "\"%s\" has %d error%s, "
: "\nFile \"%s\" has %d error%s.\n"
, name ,spread ,plural(spread));
/*
* First, iterate through all error messages in this file
* to see how many of the error messages really will
* get inserted into the file.
*/
ntrueerrors = 0;
EITERATE(erpp, files, fi){
errorp = *erpp;
if (errorp->error_e_class == C_TRUE)
ntrueerrors++;
}
fprintf(stdout, terse
? "insert %d\n"
: "\t%d of these errors can be inserted into the file.\n",
ntrueerrors);
hackfile(name, files, fi, ntrueerrors);
}
scribbled = FALSE;
n_pissed_on = 0;
FILEITERATE(fi, 1){
scribbled |= touchedfiles[fi];
n_pissed_on++;
}
if (scribbled){
/*
* Construct an execv argument
*/
execvarg(n_pissed_on, r_edargc, r_edargv);
return(TRUE);
} else {
if (!terse)
fprintf(stdout, "You didn't touch any files.\n");
return(FALSE);
}
}
void
hackfile(char *name, Eptr **files, int ix, int nerrors)
{
boolean previewed;
int errordest; /* where errors go*/
if (!oktotouch(name)) {
previewed = FALSE;
errordest = TOSTDOUT;
} else {
previewed = preview(name, nerrors, files, ix);
errordest = settotouch(name);
}
if (errordest != TOSTDOUT)
touchedfiles[ix] = TRUE;
if (previewed && (errordest == TOSTDOUT))
return;
diverterrors(name, errordest, files, ix, previewed, nerrors);
if (errordest == TOTHEFILE){
/*
* overwrite the original file
*/
writetouched(1);
}
}
boolean
preview(char *name, int nerrors, Eptr **files, int ix)
{
int back;
Eptr *erpp;
if (nerrors <= 0)
return(FALSE);
back = FALSE;
if(query){
switch(inquire(terse
? "Preview? "
: "Do you want to preview the errors first? ")){
case Q_YES:
case Q_yes:
back = TRUE;
EITERATE(erpp, files, ix){
errorprint(stdout, *erpp, TRUE);
}
if (!terse)
fprintf(stdout, "\n");
case Q_error:
default:
break;
}
}
return(back);
}
int
settotouch(char *name)
{
int dest = TOSTDOUT;
if (query){
switch(inquire(terse
? "Touch? "
: "Do you want to touch file \"%s\"? ",
name)){
case Q_NO:
case Q_no:
case Q_error:
touchstatus = Q_NO;
return(dest);
default:
touchstatus = Q_YES;
break;
}
}
switch(probethisfile(name)){
case F_NOTREAD:
dest = TOSTDOUT;
fprintf(stdout, terse
? "\"%s\" unreadable\n"
: "File \"%s\" is unreadable\n",
name);
break;
case F_NOTWRITE:
dest = TOSTDOUT;
fprintf(stdout, terse
? "\"%s\" unwritable\n"
: "File \"%s\" is unwritable\n",
name);
break;
case F_NOTEXIST:
dest = TOSTDOUT;
fprintf(stdout, terse
? "\"%s\" not found\n"
: "Can't find file \"%s\" to insert error messages into.\n",
name);
break;
default:
dest = edit(name) ? TOSTDOUT : TOTHEFILE;
break;
}
return(dest);
}
void
diverterrors(char *name, int dest, Eptr **files, int ix, boolean previewed,
int nterrors)
{
int nerrors;
Eptr *erpp;
Eptr errorp;
nerrors = files[ix+1] - files[ix];
if ( (nerrors != nterrors)
&& (!previewed) ){
fprintf(stdout, terse
? "Uninserted errors\n"
: ">>Uninserted errors for file \"%s\" follow.\n",
name);
}
EITERATE(erpp, files, ix){
errorp = *erpp;
if (errorp->error_e_class != C_TRUE){
if (previewed || touchstatus == Q_NO)
continue;
errorprint(stdout, errorp, TRUE);
continue;
}
switch (dest){
case TOSTDOUT:
if (previewed || touchstatus == Q_NO)
continue;
errorprint(stdout,errorp, TRUE);
break;
case TOTHEFILE:
insert(errorp->error_line);
text(errorp, FALSE);
break;
}
}
}
int
oktotouch(char *filename)
{
char *src;
char *pat;
char *osrc;
pat = suffixlist;
if (pat == 0)
return(0);
if (*pat == '*')
return(1);
while (*pat++ != '.')
continue;
--pat; /* point to the period */
for (src = &filename[strlen(filename)], --src;
(src > filename) && (*src != '.'); --src)
continue;
if (*src != '.')
return(0);
for (src++, pat++, osrc = src; *src && *pat; src = osrc, pat++){
for (; *src /* not at end of the source */
&& *pat /* not off end of pattern */
&& *pat != '.' /* not off end of sub pattern */
&& *pat != '*' /* not wild card */
&& *src == *pat; /* and equal... */
src++, pat++)
continue;
if (*src == 0 && (*pat == 0 || *pat == '.' || *pat == '*'))
return(1);
if (*src != 0 && *pat == '*')
return(1);
while (*pat && *pat != '.')
pat++;
if (! *pat)
return(0);
}
return(0);
}
/*
* Construct an execv argument
* We need 1 argument for the editor's name
* We need 1 argument for the initial search string
* We need n_pissed_on arguments for the file names
* We need 1 argument that is a null for execv.
* The caller fills in the editor's name.
* We fill in the initial search string.
* We fill in the arguments, and the null.
*/
void
execvarg(int n_pissed_on, int *r_argc, char ***r_argv)
{
Eptr p;
char *sep;
int fi;
sep = NULL;
(*r_argv) = (char **)Calloc(n_pissed_on + 3, sizeof(char *));
(*r_argc) = n_pissed_on + 2;
(*r_argv)[1] = "+1;/###/";
n_pissed_on = 2;
if (!terse){
fprintf(stdout, "You touched file(s):");
sep = " ";
}
FILEITERATE(fi, 1){
if (!touchedfiles[fi])
continue;
p = *(files[fi]);
if (!terse){
fprintf(stdout,"%s\"%s\"", sep, p->error_text[0]);
sep = ", ";
}
(*r_argv)[n_pissed_on++] = p->error_text[0];
}
if (!terse)
fprintf(stdout, "\n");
(*r_argv)[n_pissed_on] = 0;
}
FILE *o_touchedfile; /* the old file */
FILE *n_touchedfile; /* the new file */
char *o_name;
char n_name[MAXPATHLEN];
int o_lineno;
int n_lineno;
boolean tempfileopen = FALSE;
/*
* open the file; guaranteed to be both readable and writable
* Well, if it isn't, then return TRUE if something failed
*/
boolean
edit(char *name)
{
int fd;
const char *tmpdir;
o_name = name;
if ( (o_touchedfile = fopen(name, "r")) == NULL){
fprintf(stderr, "%s: Can't open file \"%s\" to touch (read).\n",
processname, name);
return(TRUE);
}
if ((tmpdir = getenv("TMPDIR")) == NULL)
tmpdir = _PATH_TMP;
(void)snprintf(n_name, sizeof (n_name), "%s/%s", tmpdir, TMPFILE);
fd = -1;
if ((fd = mkstemp(n_name)) == -1 ||
(n_touchedfile = fdopen(fd, "w")) == NULL) {
if (fd != -1)
close(fd);
fprintf(stderr,"%s: Can't open file \"%s\" to touch (write).\n",
processname, name);
return(TRUE);
}
tempfileopen = TRUE;
n_lineno = 0;
o_lineno = 0;
return(FALSE);
}
/*
* Position to the line (before, after) the line given by place
*/
char edbuf[BUFSIZ];
void
insert(int place)
{
--place; /* always insert messages before the offending line*/
for(; o_lineno < place; o_lineno++, n_lineno++){
if(fgets(edbuf, BUFSIZ, o_touchedfile) == NULL)
return;
fputs(edbuf, n_touchedfile);
}
}
void
text(Eptr p, boolean use_all)
{
int offset = use_all ? 0 : 2;
fputs(lang_table[p->error_language].lang_incomment, n_touchedfile);
fprintf(n_touchedfile, "%d [%s] ",
p->error_line,
lang_table[p->error_language].lang_name);
wordvprint(n_touchedfile, p->error_lgtext-offset, p->error_text+offset);
fputs(lang_table[p->error_language].lang_outcomment,n_touchedfile);
n_lineno++;
}
/*
* write the touched file to its temporary copy,
* then bring the temporary in over the local file
*/
boolean
writetouched(int overwrite)
{
int nread;
FILE *localfile;
FILE *tmpfile;
int botch;
int oktorm;
botch = 0;
oktorm = 1;
while ((nread = fread(edbuf, 1, sizeof(edbuf), o_touchedfile)) != 0) {
if (nread != fwrite(edbuf, 1, nread, n_touchedfile)){
/*
* Catastrophe in temporary area: file system full?
*/
botch = 1;
fprintf(stderr,
"%s: write failure: No errors inserted in \"%s\"\n",
processname, o_name);
}
}
fclose(n_touchedfile);
fclose(o_touchedfile);
/*
* Now, copy the temp file back over the original
* file, thus preserving links, etc
*/
if (botch == 0 && overwrite){
botch = 0;
localfile = NULL;
tmpfile = NULL;
if ((localfile = fopen(o_name, "w")) == NULL){
fprintf(stderr,
"%s: Can't open file \"%s\" to overwrite.\n",
processname, o_name);
botch++;
}
if ((tmpfile = fopen(n_name, "r")) == NULL){
fprintf(stderr, "%s: Can't open file \"%s\" to read.\n",
processname, n_name);
botch++;
}
if (!botch)
oktorm = mustoverwrite(localfile, tmpfile);
if (localfile != NULL)
fclose(localfile);
if (tmpfile != NULL)
fclose(tmpfile);
}
if (oktorm == 0){
fprintf(stderr, "%s: Catastrophe: A copy of \"%s\": was saved in \"%s\"\n",
processname, o_name, n_name);
exit(1);
}
/*
* Kiss the temp file good bye
*/
unlink(n_name);
tempfileopen = FALSE;
return(TRUE);
}
/*
* return 1 if the tmpfile can be removed after writing it out
*/
int
mustoverwrite(FILE *preciousfile, FILE *tmpfile)
{
int nread;
while ((nread = fread(edbuf, 1, sizeof(edbuf), tmpfile)) != 0) {
if (mustwrite(edbuf, nread, preciousfile) == 0)
return(0);
}
return(1);
}
/*
* return 0 on catastrophe
*/
int
mustwrite(char *base, int n, FILE *preciousfile)
{
int nwrote;
if (n <= 0)
return(1);
nwrote = fwrite(base, 1, n, preciousfile);
if (nwrote == n)
return(1);
perror(processname);
switch(inquire(terse
? "Botch overwriting: retry? "
: "Botch overwriting the source file: retry? ")){
case Q_YES:
case Q_yes:
mustwrite(base + nwrote, n - nwrote, preciousfile);
return(1);
case Q_NO:
case Q_no:
switch(inquire("Are you sure? ")){
case Q_error:
case Q_YES:
case Q_yes:
return(0);
case Q_NO:
case Q_no:
mustwrite(base + nwrote, n - nwrote, preciousfile);
return(1);
}
case Q_error:
default:
return(0);
}
}
void
onintr(int sig)
{
switch(inquire(terse
? "\nContinue? "
: "\nInterrupt: Do you want to continue? ")){
case Q_YES:
case Q_yes:
signal(sig, onintr);
return;
case Q_error:
default:
if (tempfileopen){
/*
* Don't overwrite the original file!
*/
writetouched(0);
}
(void)raise_default_signal(sig);
_exit(127);
}
/*NOTREACHED*/
}
void
errorprint(FILE *place, Eptr errorp, boolean print_all)
{
int offset = print_all ? 0 : 2;
if (errorp->error_e_class == C_IGNORE)
return;
fprintf(place, "[%s] ", lang_table[errorp->error_language].lang_name);
wordvprint(place,errorp->error_lgtext-offset,errorp->error_text+offset);
putc('\n', place);
}
int
inquire(char *fmt, ...)
{
va_list ap;
char buffer[128];
if (queryfile == NULL)
return(Q_error);
for(;;){
fflush(stdout);
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fflush(stderr);
if (fgets(buffer, 127, queryfile) == NULL)
return(Q_error);
switch(buffer[0]){
case 'Y': return(Q_YES);
case 'y': return(Q_yes);
case 'N': return(Q_NO);
case 'n': return(Q_no);
default: fprintf(stderr, "Yes or No only!\n");
}
}
}
int
probethisfile(char *name)
{
struct stat statbuf;
if (stat(name, &statbuf) < 0)
return(F_NOTEXIST);
if((statbuf.st_mode & S_IREAD) == 0)
return(F_NOTREAD);
if((statbuf.st_mode & S_IWRITE) == 0)
return(F_NOTWRITE);
return(F_TOUCHIT);
}