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7200499: Better data validation for options

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Reviewed-by: darcy, jjh, mschoene
This commit is contained in:
Kumar Srinivasan 2012-10-16 16:38:38 -07:00
parent ef7ede903e
commit f9122bd3fd
2 changed files with 29 additions and 5 deletions
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2
jdk/src/share/bin/jli_util.h
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@ -66,7 +66,7 @@ int JLI_GetStdArgc();
#include <io.h>
#define JLI_StrCaseCmp(p1, p2) stricmp((p1), (p2))
#define JLI_StrNCaseCmp(p1, p2, p3) strnicmp((p1), (p2), (p3))
#define JLI_Snprintf _snprintf
size_t JLI_Snprintf(char *buffer, size_t size, const char *format, ...);
void JLI_CmdToArgs(char *cmdline);
#define JLI_Lseek _lseeki64
#else /* NIXES */

32
jdk/src/windows/bin/java_md.c
View File

@ -101,7 +101,6 @@ int awtPreloadD3D = -1;
/* funtion in awt.dll (src/windows/native/sun/java2d/d3d/D3DPipelineManager.cpp) */
#define D3D_PRELOAD_FUNC "preloadD3D"
/* Extracts value of a parameter with the specified name
* from command line argument (returns pointer in the argument).
* Returns NULL if the argument does not contains the parameter.
@ -276,7 +275,8 @@ LoadMSVCRT()
#endif
#ifdef CRT_DLL
if (GetJREPath(crtpath, MAXPATHLEN)) {
if (JLI_StrLen(crtpath) + JLI_StrLen("\\bin\\") + JLI_StrLen(CRT_DLL) >= MAXPATHLEN) {
if (JLI_StrLen(crtpath) + JLI_StrLen("\\bin\\") +
JLI_StrLen(CRT_DLL) >= MAXPATHLEN) {
JLI_ReportErrorMessage(JRE_ERROR11);
return JNI_FALSE;
}
@ -347,7 +347,8 @@ GetJVMPath(const char *jrepath, const char *jvmtype,
if (JLI_StrChr(jvmtype, '/') || JLI_StrChr(jvmtype, '\\')) {
JLI_Snprintf(jvmpath, jvmpathsize, "%s\\" JVM_DLL, jvmtype);
} else {
JLI_Snprintf(jvmpath, jvmpathsize, "%s\\bin\\%s\\" JVM_DLL, jrepath, jvmtype);
JLI_Snprintf(jvmpath, jvmpathsize, "%s\\bin\\%s\\" JVM_DLL,
jrepath, jvmtype);
}
if (stat(jvmpath, &s) == 0) {
return JNI_TRUE;
@ -526,6 +527,29 @@ jlong Counter2Micros(jlong counts)
return (counts * 1000 * 1000)/counterFrequency.QuadPart;
}
/*
* windows snprintf does not guarantee a null terminator in the buffer,
* if the computed size is equal to or greater than the buffer size,
* as well as error conditions, this function guarantees a null terminator
* under all these conditions. An unreasonable buffer size will return
* an error value.
*/
size_t
JLI_Snprintf(char* buffer, size_t size, const char* format, ...)
{
size_t rc;
va_list vl;
if (size <= 0)
return -1;
va_start(vl, format);
rc = vsnprintf(buffer, size - 1, format, vl);
/* force a null terminator, if something is amiss */
if (rc < 0 || rc >= size)
buffer[size - 1] = '\0';
va_end(vl);
return rc;
}
void
JLI_ReportErrorMessage(const char* fmt, ...) {
va_list vl;
@ -880,7 +904,7 @@ unquote(const char *s) {
*/
void
ExecJRE(char *jre, char **argv) {
int len;
jint len;
char path[MAXPATHLEN + 1];
const char *progname = GetProgramName();