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quote CMDLINE env var exe name if needed, fix memory leak in expandEnvVars, memory corruption in set command #104

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quote CMDLINE env var exe name if needed, fix memory leak in expandEnvVars, memory corruption in set command #104

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23a46da
update version strings and history
boeckmann May 29, 2024
40c78ca
fix NASM segment attribute redefinition warning
boeckmann May 29, 2024
ff24fe9
OpenWatcom 1.9 warning fixes
boeckmann May 29, 2024
4d8d6a5
add binary extensions to .gitignore
boeckmann May 29, 2024
f8358cd
Merge remote-tracking branch 'origin/master' into 0.85_fixes
boeckmann Jun 2, 2024
50a1587
fix #102 multi-line command line editing
boeckmann Jun 2, 2024
f7d1eb5
Merge remote-tracking branch 'origin/master' into 0.85_fixes
boeckmann Jun 2, 2024
f69815d
make sure executable name contains quotation marks if needed
boeckmann Jun 2, 2024
9cf07f3
fix memory leak in expandEnvVars and memory corruption in set command
boeckmann Oct 13, 2024
ffad3a8
Merge remote-tracking branch 'origin/master' into 0.85_fixes
boeckmann Oct 13, 2024
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2 changes: 1 addition & 1 deletion cmd/set.c
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Original file line number Diff line number Diff line change
Expand Up @@ -92,7 +92,7 @@ int cmd_set(char *param)
error_out_of_memory();
return E_NoMem;
}
len = dos_read(0, promptBuf, promptBuffer);
len = dos_read(0, promptBuf, promptBuffer-1);
if(cbreak || len < 0) {
free(promptBuf);
return E_CBreak;
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22 changes: 16 additions & 6 deletions shell/command.c
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Original file line number Diff line number Diff line change
Expand Up @@ -215,9 +215,15 @@ void execute(char *first, char *rest, int lh_lf)
dprintf(("[EXEC: %s %s]\n", fullname, rest));

if(strlen(rest) > MAX_EXTERNAL_COMMAND_SIZE) {
char *fullcommandline = malloc( strlen( first ) + strlen( rest ) + 2 );
char *fullcommandline = malloc( strlen( first ) + strlen( rest ) + 3 );
if( fullcommandline == NULL ) return;
sprintf( fullcommandline, "%s%s", first, rest );
if ( strchr( first, ' ' ) ) {
sprintf( fullcommandline, "\"%s\"%s", first, rest );

}
else {
sprintf( fullcommandline, "%s%s", first, rest );
}
if( chgEnv( LONG_CMDLINE_ENV_NAME, fullcommandline ) != 0 ) {
free( fullcommandline );
return;
Expand Down Expand Up @@ -686,8 +692,10 @@ int expandEnvVars(char *ip, char * const line)
*tp = '\0';

if((evar = getEnv(ip)) != 0) {
if(cp >= parsedMax(strlen(evar)))
return 0;
if(cp >= parsedMax(strlen(evar))) {
free(evar);
return 0;
}
cp = stpcpy(cp, evar);
free(evar);
} else if(matchtok(ip, "ERRORLEVEL")) {
Expand All @@ -698,8 +706,10 @@ int expandEnvVars(char *ip, char * const line)
if(0 == (evar = cwd(0))) {
return 0;
} else {
if(cp >= parsedMax(strlen(evar)))
return 0;
if(cp >= parsedMax(strlen(evar))) {
free(evar);
return 0;
}
cp = stpcpy(cp, evar);
free(evar);
}
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