/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* processDirective
*
* THIS IS THE ONLY EXTERNAL ENTRY POINT
*
* A directive character has been found.
* Decide what to do and return a pointer to the character
* where scanning is to resume.
*/
LOCAL char *
processDirective(char * scan)
{
char * eodir = end_of_directive(scan);
/*
* Ignore '#!' as a comment, enabling a definition file to behave
* as a script that gets interpreted by autogen. :-)
*/
if (*scan == '!')
return eodir;
scan = SPN_WHITESPACE_CHARS(scan);
if (! IS_ALPHABETIC_CHAR(*scan))
return doDir_invalid(DIR_INVALID, scan, eodir);
return doDir_directive_disp(scan, eodir);
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* processDirective
*
* THIS IS THE ONLY EXTERNAL ENTRY POINT
*
* A directive character has been found.
* Decide what to do and return a pointer to the character
* where scanning is to resume.
*/
LOCAL char*
processDirective(char* pzScan)
{
const tDirTable* pTbl = dirTable;
char* pzDir;
char* pzEnd;
/*
* Search for the end of the #-directive.
* Replace "\\\n" sequences with " ".
*/
for (;;) {
pzEnd = strchr(pzScan, NL);
if (pzEnd == NULL) {
/*
* The end of the directive is the end of the string
*/
pzEnd = pzScan + strlen(pzScan);
break;
}
pCurCtx->lineNo++;
if (pzEnd[-1] != '\\') {
/*
* The end of the directive is the end of the line
* and the line has not been continued.
*/
*(pzEnd++) = NUL;
break;
}
/*
* Replace the escape-newline pair with spaces and
* find the next end of line
*/
pzEnd[-1] = pzEnd[0] = ' ';
}
/*
* Ignore ``#!'' as a comment, enabling a definition file to behave
* as a script that gets interpreted by autogen. :-)
*/
if (*pzScan == '!')
return pzEnd;
/*
* Find the start of the directive name
*/
while (IS_WHITESPACE_CHAR(*pzScan)) pzScan++;
pzDir = pzScan;
/*
* Find the *END* of the directive name. If no name, bail out.
*/
while (IS_ALPHABETIC_CHAR(*pzScan)) pzScan++;
if (pzDir == pzScan)
return pzEnd;
/*
* IF there is anything that follows the name, ...
*/
if (*pzScan != NUL) {
/*
* IF something funny immediately follows the directive name,
* THEN we will ignore it completely.
*/
if (! IS_WHITESPACE_CHAR(*pzScan))
return pzEnd;
/*
* Terminate the name being defined
* and find the start of anything else.
*/
*pzScan++ = NUL;
while (IS_WHITESPACE_CHAR(*pzScan)) pzScan++;
}
/*
* Trim off trailing white space
*/
{
char* pz = pzScan + strlen(pzScan);
while ((pz > pzScan) && IS_WHITESPACE_CHAR(pz[-1])) pz--;
*pz = NUL;
}
pTbl = dirTable + (int)findDirective(pzDir);
return (*(pTbl->pDirProc))(pzScan, pzEnd);
}
/*
* fixupSubblockString
*/
static char*
fixupSubblockString(char const * pzSrc)
{
char * pzString;
char * pzDest;
char * pzCopy;
pzString = strdup(pzSrc);
/*
* Make sure we find the '=' separator
*/
{
char * p = strchr(pzString, '=');
if (p == NULL)
die(zNoList, pzString);
/*
* Trim the name
*/
pzDest = p++;
while ((pzDest > pzString) && IS_HORIZ_WHITE_CHAR(pzDest[-1])) pzDest--;
*(pzDest++) = NUL;
/*
* Make sure at least one attribute name is defined
*/
while (IS_WHITESPACE_CHAR(*p)) p++;
if (*p == NUL)
die(zNoList, pzString);
pzCopy = p;
}
for (;;) {
/*
* Attribute names must start with an alpha
*/
if (! IS_ALPHABETIC_CHAR(*pzCopy)) {
fprintf(stderr, "ERROR: attribute names must start "
"with an alphabetic character:\n\t%s\n",
pzString);
USAGE(EXIT_FAILURE);
}
/*
* Copy the name.
*/
while (IS_OPTION_NAME_CHAR(*pzCopy))
*pzDest++ = *pzCopy++;
/*
* Skip over one comma (optional) and any white space.
* If there is a newline, it must be after the comma.
*/
while (IS_HORIZ_WHITE_CHAR(*pzCopy)) pzCopy++;
if (*pzCopy == ',')
pzCopy++;
while (IS_WHITESPACE_CHAR(*pzCopy)) pzCopy++;
if (*pzCopy == NUL)
break;
/*
* The final string contains only one space between attributes
*/
*pzDest++ = ' ';
}
*pzDest = NUL;
return pzString;
}
/**
* Run the FSM. Will return CGI_ST_DONE or CGI_ST_INVALID
*/
te_cgi_state
cgi_run_fsm(
char const * pzSrc,
int inlen,
char * pzOut,
int outlen )
{
te_cgi_state cgi_state = CGI_ST_INIT;
te_cgi_event trans_evt;
te_cgi_state nxtSt;
te_cgi_trans trans;
char const * saved_pzSrc = pzSrc;
int saved_inlen = inlen;
char * saved_pzOut = pzOut;
int saved_outlen = outlen;
(void)saved_pzSrc;
(void)saved_inlen;
(void)saved_pzOut;
(void)saved_outlen;
while (cgi_state < CGI_ST_INVALID) {
/* START == FIND TRANSITION == DO NOT CHANGE THIS COMMENT */
char curCh;
if (--inlen < 0) {
trans_evt = CGI_EV_END;
curCh = NUL;
} else {
if (outlen < 4) {
static char const exhaustion[] = "output space exhausted\n";
if (saved_outlen > (int)sizeof(exhaustion))
memcpy(saved_pzOut, exhaustion, sizeof(exhaustion));
return CGI_ST_INVALID;
}
curCh = *(pzSrc++);
if (IS_ALPHABETIC_CHAR( curCh ))
trans_evt = CGI_EV_ALPHA;
else if (IS_DEC_DIGIT_CHAR( curCh ))
trans_evt = CGI_EV_NAME_CHAR;
else switch (curCh) {
case '_': trans_evt = CGI_EV_NAME_CHAR; break;
case '=': trans_evt = CGI_EV_EQUAL; break;
case '+': trans_evt = CGI_EV_SPACE; curCh = ' '; break;
case '%': trans_evt = CGI_EV_ESCAPE; break;
case '&': trans_evt = CGI_EV_SEPARATOR; break;
default: trans_evt = CGI_EV_OTHER; break;
}
}
/* END == FIND TRANSITION == DO NOT CHANGE THIS COMMENT */
#ifndef __COVERITY__
if (trans_evt >= CGI_EV_INVALID) {
nxtSt = CGI_ST_INVALID;
trans = CGI_TR_INVALID;
} else
#endif /* __COVERITY__ */
{
const t_cgi_transition * ttbl =
cgi_trans_table[ cgi_state ] + trans_evt;
nxtSt = ttbl->next_state;
trans = ttbl->transition;
}
switch (trans) {
case CGI_TR_INVALID:
/* START == INVALID == DO NOT CHANGE THIS COMMENT */
exit( cgi_invalid_transition( cgi_state, trans_evt ));
/* END == INVALID == DO NOT CHANGE THIS COMMENT */
break;
case CGI_TR_NAME_EQUAL:
/* START == NAME_EQUAL == DO NOT CHANGE THIS COMMENT */
strcpy( pzOut, "='" );
outlen -= 2;
pzOut += 2;
/* END == NAME_EQUAL == DO NOT CHANGE THIS COMMENT */
break;
case CGI_TR_SEPARATE:
/* START == SEPARATE == DO NOT CHANGE THIS COMMENT */
strcpy( pzOut, "';\n" );
outlen -= 2;
pzOut += 3;
/* END == SEPARATE == DO NOT CHANGE THIS COMMENT */
break;
case CGI_TR_STASH:
/* START == STASH == DO NOT CHANGE THIS COMMENT */
*(pzOut++) = curCh;
outlen--;
/* END == STASH == DO NOT CHANGE THIS COMMENT */
break;
case CGI_TR_VALUE_ESCAPE:
/* START == VALUE_ESCAPE == DO NOT CHANGE THIS COMMENT */
{
char z[4];
if (inlen < 2)
exit( cgi_invalid_transition( cgi_state, trans_evt ));
z[0] = *(pzSrc++);
z[1] = *(pzSrc++);
z[2] = NUL;
inlen -= 2;
/*
* We must backslash quote certain characters that are %-quoted
* in the input string:
*/
switch (*(pzOut++) = (char)strtol( z, NULL, 16 )) {
case '\'':
case '\\':
case '#':
pzOut[0] = pzOut[-1];
pzOut[-1] = '\\';
pzOut++;
}
}
/* END == VALUE_ESCAPE == DO NOT CHANGE THIS COMMENT */
break;
default:
/* START == BROKEN MACHINE == DO NOT CHANGE THIS COMMENT */
exit( cgi_invalid_transition( cgi_state, trans_evt ));
/* END == BROKEN MACHINE == DO NOT CHANGE THIS COMMENT */
}
cgi_state = nxtSt;
}
return cgi_state;
}
