/*
** This function implements a cross-platform "system()" interface.
*/
int fossil_system(const char *zOrigCmd){
int rc;
#if defined(_WIN32)
/* On windows, we have to put double-quotes around the entire command.
** Who knows why - this is just the way windows works.
*/
char *zNewCmd = mprintf("\"%s\"", zOrigCmd);
wchar_t *zUnicode = fossil_utf8_to_unicode(zNewCmd);
if( g.fSystemTrace ) {
fossil_trace("SYSTEM: %s\n", zNewCmd);
}
rc = _wsystem(zUnicode);
fossil_unicode_free(zUnicode);
free(zNewCmd);
#else
/* On unix, evaluate the command directly.
*/
if( g.fSystemTrace ) fprintf(stderr, "SYSTEM: %s\n", zOrigCmd);
/* Unix systems should never shell-out while processing an HTTP request,
** either via CGI, SCGI, or direct HTTP. The following assert verifies
** this. And the following assert proves that Fossil is not vulnerable
** to the ShellShock or BashDoor bug.
*/
assert( g.cgiOutput==0 );
/* The regular system() call works to get a shell on unix */
rc = system(zOrigCmd);
#endif
return rc;
}
/*
** Strip a possible byte-order-mark (BOM) from the blob. On Windows, if there
** is either no BOM at all or an (le/be) UTF-16 BOM, a conversion to UTF-8 is
** done. If useMbcs is false and there is no BOM, the input string is assumed
** to be UTF-8 already, so no conversion is done.
*/
void blob_to_utf8_no_bom(Blob *pBlob, int useMbcs){
char *zUtf8;
int bomSize = 0;
#if defined(_WIN32) || defined(__CYGWIN__)
int bomReverse = 0;
#endif
if( starts_with_utf8_bom(pBlob, &bomSize) ){
struct Blob temp;
zUtf8 = blob_str(pBlob) + bomSize;
blob_zero(&temp);
blob_append(&temp, zUtf8, -1);
blob_swap(pBlob, &temp);
blob_reset(&temp);
#if defined(_WIN32) || defined(__CYGWIN__)
}else if( starts_with_utf16_bom(pBlob, &bomSize, &bomReverse) ){
zUtf8 = blob_buffer(pBlob);
if( bomReverse ){
/* Found BOM, but with reversed bytes */
unsigned int i = blob_size(pBlob);
while( i>0 ){
/* swap bytes of unicode representation */
char zTemp = zUtf8[--i];
zUtf8[i] = zUtf8[i-1];
zUtf8[--i] = zTemp;
}
}
/* Make sure the blob contains two terminating 0-bytes */
blob_append(pBlob, "", 1);
zUtf8 = blob_str(pBlob) + bomSize;
zUtf8 = fossil_unicode_to_utf8(zUtf8);
blob_zero(pBlob);
blob_append(pBlob, zUtf8, -1);
fossil_unicode_free(zUtf8);
#endif /* _WIN32 || __CYGWIN__ */
#if defined(_WIN32)
}else if( useMbcs ){
zUtf8 = fossil_mbcs_to_utf8(blob_str(pBlob));
blob_reset(pBlob);
blob_append(pBlob, zUtf8, -1);
fossil_mbcs_free(zUtf8);
#endif /* _WIN32 */
}
}
/*
** This function implements a cross-platform "system()" interface.
*/
int fossil_system(const char *zOrigCmd){
int rc;
#if defined(_WIN32)
/* On windows, we have to put double-quotes around the entire command.
** Who knows why - this is just the way windows works.
*/
char *zNewCmd = mprintf("\"%s\"", zOrigCmd);
wchar_t *zUnicode = fossil_utf8_to_unicode(zNewCmd);
if( g.fSystemTrace ) {
fossil_trace("SYSTEM: %s\n", zNewCmd);
}
rc = _wsystem(zUnicode);
fossil_unicode_free(zUnicode);
free(zNewCmd);
#else
/* On unix, evaluate the command directly.
*/
if( g.fSystemTrace ) fprintf(stderr, "SYSTEM: %s\n", zOrigCmd);
rc = system(zOrigCmd);
#endif
return rc;
}
