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cdesktopenv/cde/programs/dtmail/libDtMail/RFC/MIMEBodyPart.C

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/*
* CDE - Common Desktop Environment
*
* Copyright (c) 1993-2012, The Open Group. All rights reserved.
*
* These libraries and programs are free software; you can
* redistribute them and/or modify them under the terms of the GNU
* Lesser General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* These libraries and programs are distributed in the hope that
* they will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with these libraries and programs; if not, write
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301 USA
*/
/*
*+SNOTICE
*
*
* $TOG: MIMEBodyPart.C /main/11 1998/04/06 13:27:03 mgreess $
*
* RESTRICTED CONFIDENTIAL INFORMATION:
*
* The information in this document is subject to special
* restrictions in a confidential disclosure agreement bertween
* HP, IBM, Sun, USL, SCO and Univel. Do not distribute this
* document outside HP, IBM, Sun, USL, SCO, or Univel wihtout
* Sun's specific written approval. This documment and all copies
* and derivative works thereof must be returned or destroyed at
* Sun's request.
*
* Copyright 1993 Sun Microsystems, Inc. All rights reserved.
*
*+ENOTICE
*/
#include <EUSCompat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <Dt/Dts.h>
#include <DtMail/DtMail.hh>
#include "RFCImpl.hh"
#include "RFCMIME.hh"
#include <DtMail/Threads.hh>
#include "md5.h"
// For CHARSET
#include <locale.h>
#include <Dt/LocaleXlate.h>
#include "str_utils.h"
MIMEBodyPart::MIMEBodyPart(DtMailEnv & error,
DtMail::Message * parent,
const char * start,
const int len,
RFCEnvelope * body_env)
: RFCBodyPart(error, parent, start, len, body_env)
{
// A single part message. We are done for now.
//
error.clear();
return;
}
MIMEBodyPart::MIMEBodyPart(DtMailEnv & error,
DtMail::Message * parent,
const char * start,
const char ** end,
const char * boundary)
: RFCBodyPart(error, parent, start, 0, NULL)
{
error.clear();
// We are sitting at the start of a boundary. We need to get
// past the boundary to do the real processing.
//
const char * body_end;
for (body_end = _body_text; body_end <= *end && *body_end != '\n'; body_end++) {
continue;
}
body_end += 1;
if (body_end > *end) {
// Don't know. Give up!
*end = body_end;
_body_len = *end - start + 1;
// Need a bogus envelope for other uses.
//
_body_env = new RFCEnvelope(error, parent, NULL, 0);
return;
}
const char * env_start = body_end;
_my_env = DTM_TRUE;
if (isTerm(env_start)) {
_body_env = new RFCEnvelope(error, parent, env_start, 0);
}
else {
// Find the blank line where the envelope ends.
//
for (; body_end <= *end; body_end++) {
if (*body_end == '\n') {
int blank_only = 1;
for (const char * blank = body_end + 1;
blank <= *end && *blank != '\n'; blank++) {
if (!isspace((unsigned char)*blank)) {
blank_only = 0;
break;
}
}
if (blank_only) {
break;
}
}
}
_body_env = new RFCEnvelope(error,
parent,
env_start,
body_end - env_start + 1);
body_end += 1;
}
// Chew everything up to the next new line, which should be only
// a CRLF.
//
for (;body_end <= *end && *body_end != '\n'; body_end++) {
continue;
}
body_end += 1;
_body_text = body_end; // This is where the body really starts.
// Now we need to find the end of the body. MIME doesn't have
// any predefined length fields so we have to use the boundaries.
//
int bndry_len = strlen(boundary);
for (;body_end <= *end; body_end++) {
if (*body_end == '\n' &&
*(body_end + 1) == '-' &&
*(body_end + 2) == '-' &&
strncmp(body_end + 3, boundary, bndry_len) == 0) {
break;
}
}
if (*(body_end - 1) == '\r') {
body_end -= 1;
}
_body_len = body_end - _body_text + 1;
// MIME says the CRLF preceding a boundary belongs to the boundary.
// We will pull it off here rather than do it on entry to this
// method for the next message.
for (;body_end <= *end && *body_end != '\n'; body_end++) {
continue;
}
body_end += 1;
// Computing the end here is a little different. If the boundary
// ends with a "--" as well, then we are at the real end of
// the message.
//
const char * bndry_end = body_end + 2 + strlen(boundary);
if (*bndry_end == '-' && *(bndry_end + 1) == '-') {
*end = *end + 1;
}
else {
*end = body_end;
}
return;
}
MIMEBodyPart::~MIMEBodyPart(void)
{
}
static int
countTypes(char ** types)
{
int count;
for (count = 0; *types; types++, count++) {
continue;
}
return(count);
}
void
MIMEBodyPart::getContentType(DtMailEnv &error, char **mime_type)
{
DtMailValueSeq value;
if (mime_type) {
*mime_type = (char *)0;
if (_body_env) {
_body_env->getHeader(error, "Content-Type", DTM_FALSE, value);
}
if (_body_env && !error.isSet()) {
// Handle "Content-Type: text" problem with /usr/lib/mail.local
if (strcasecmp(*(value[0]), "text")==0) {
*mime_type = strdup("text/plain");
} else {
*mime_type = strdup(*(value[0]));
}
} else {
error.clear();
*mime_type = strdup("text/plain");
}
}
}
void
MIMEBodyPart::getDtType(DtMailEnv & error)
{
MutexLock lock_scope(_obj_mutex);
MutexLock dt_lib_lock(_DtMutex);
// error.clear();
char * end;
char * mime_type;
DtMailValueSeq value;
if (_body_env) {
_body_env->getHeader(error, "Content-Type", DTM_FALSE, value);
}
if (_body_env && !error.isSet()) {
// Handle "Content-Type: text" problem with /usr/lib/mail.local
//
if (strcasecmp(*(value[0]), "text")==0)
mime_type = strdup("text/plain");
else
mime_type = strdup(*(value[0]));
}
else {
error.clear();
mime_type = strdup("text/plain");
}
for (end = mime_type; *end; end++) {
if (*end == ';' || isspace((unsigned char)*end)) {
break;
}
if (isupper(*end)) {
*end = tolower(*end);
}
}
*end = 0;
char ** types = DtDtsFindAttribute(DtDTS_DA_MIME_TYPE, mime_type);
// We must have an exact 1:1 mapping between the mime type and the
// CDE type to use this inverse mapping. If we have no hits then we
// don't have any thing to use. If we have several hits, then we have
// no idea which type is the correct type.
//
if (NULL != types) {
if (countTypes(types) == 1) {
// We will use the first name. It may be wrong, but
// it is the best we can do at this point.
//
_body_type = strdup(types[0]);
DtDtsFreeDataTypeNames(types);
free(mime_type);
return;
}
DtDtsFreeDataTypeNames(types);
}
// We need the bits so we can type the buffer and get
// a type for the object. This is where things can get
// very slow for the user.
//
loadBody(error);
if (error.isSet()) {
return;
}
int istext = (strcasecmp(mime_type, "text/plain") == 0);
char * name = getNameHeaderVal(error);
char * type = DtDtsBufferToDataType(_body, _body_decoded_len, name);
// We have written a name pattern for text parts that will match
// the name "text" as a TEXT part. If the first attempt to get the
// data type fails and we have a MIMETYPE of text/plain, then we try
// again using the name "text".
//
if ( (0 == strcasecmp(mime_type, "text/plain")) &&
(NULL == type || 0 == strcasecmp(type, "DATA")) )
{
if (type)
DtDtsFreeDataType(type);
type = DtDtsBufferToDataType(_body, _body_decoded_len, "text");
}
if (NULL != type)
_body_type = strdup(type);
else
_body_type = strdup("UNKNOWN");
if (error.isSet())
error.clear();
if (type)
DtDtsFreeDataType(type);
free(mime_type);
if (name)
free(name);
}
void
MIMEBodyPart::loadBody(DtMailEnv & error)
{
// For CHARSET
char *cs = NULL, *to_cs = NULL, *from_cs = NULL;
// There is no reason to clear the error object because it is assumed
// that whoever instantiated it, cleared it.
// error.clear();
if (_body) {
return;
}
// If there is any encoding done to the body, reverse it
//
DtMailValueSeq value;
if (_body_env) {
_body_env->getHeader(error, "Content-Transfer-Encoding",
DTM_FALSE, value);
}
if (_body_env && !error.isSet()) {
const char * enc = *(value[0]);
if (strcasecmp(enc, "base64") == 0) {
// Decoded bodies will always be smaller than
// encoded bodies.
//_body = (char *)malloc(_body_len);
_body = (char *)malloc(_body_len+1);
int size = _body_decoded_len = 0;
_must_free_body = DTM_TRUE;
RFCMIME::readBase64(_body, size, _body_text, _body_len);
_body_decoded_len = size;
// Changed this temporarily until after release. We really should not
// be null terminating these buffers.
(_body)[_body_decoded_len] = 0;
}
else if (strcasecmp(enc, "quoted-printable") == 0) {
_body = (char *)malloc(_body_len + 20);
_must_free_body = DTM_TRUE;
int size = _body_decoded_len = 0;
RFCMIME::readQPrint(_body, size, _body_text, _body_len);
_body_decoded_len = size;
// Changed this temporarily until after release. We really should not
// be null terminating these buffers.
(_body)[_body_decoded_len] = 0;
}
else {
// Default case is no transfer encoding applies (7bit==8bit==binary)
_body = (char *)_body_text;
_must_free_body = DTM_FALSE;
_body_decoded_len = _body_len;
}
}
else {
// Default case is no transfer encoding applies.
error.clear();
_body = (char *)_body_text;
_must_free_body = DTM_FALSE;
_body_decoded_len = _body_len;
}
// For CHARSET
// Get charset from content-type field
char *ret = NULL;
value.clear();
_body_env->getHeader(error, "Content-Type", DTM_FALSE, value);
if (error.isNotSet()) {
cs = csFromContentType(value);
if ( cs == NULL ) {
// Random allocation for cs
cs = (char *)calloc(128, sizeof(char));
DtXlateOpToStdLocale(DtLCX_OPER_SETLOCALE,
setlocale(LC_CTYPE, NULL),
NULL,
NULL,
&ret);
strcpy(cs, "DEFAULT");
strcat(cs, ".");
strcat(cs, ret);
}
} else { // No Content-Type
// We'll be flexible here. If Content-Type header is missing, we'll
// still try to convert from the locale specific default codeset.
error.clear();
// Random allocation for cs
cs = (char *)calloc(128, sizeof(char));
DtXlateOpToStdLocale(DtLCX_OPER_SETLOCALE,
setlocale(LC_CTYPE, NULL),
NULL,
NULL,
&ret);
strcpy(cs, "DEFAULT");
strcat(cs, ".");
strcat(cs, ret);
}
// Handle ISO-2022-INT, RFC approved, or private encoding names
if ( strcasecmp(cs, "ISO-2022-INT-1") == 0 ) {
// Need to obtain charset from encoding
} // RFC approved and private names are not treated differently.
// Get iconv name from charset - this is the "from" name.
from_cs = NULL;
from_cs = csToConvName(cs);
// Get current locale's iconv name - this is the "to" name.
to_cs = NULL;
to_cs = locToConvName();
if ( from_cs && to_cs ) {
if ( strcasecmp(from_cs, to_cs) != 0 ) {
unsigned long tmp_len = (unsigned long) _body_decoded_len;
if (csConvert(&_body, tmp_len, (int)_must_free_body, from_cs, to_cs)) {
_must_free_body = DTM_TRUE;
_body_decoded_len = (int) tmp_len;
}
}
}
free ( cs );
if ( from_cs )
free( from_cs );
if ( to_cs )
free ( to_cs );
if ( ret )
free( ret );
// End of For CHARSET
// Clear the error condition before proceeding. This is done
// because functions that take a DtMailEnv object as a parameter
// expect it to be cleared. (Already cleared above)
// error.clear();
// If the body is text/enriched, convert it to text/plain
// At some point the front end should be able to handle this via
// data typing and do an 'intelligent' conversion, in which
// case this code can be removed
//
value.clear();
if (_body_env) {
_body_env->getHeader(error, "Content-Type", DTM_FALSE, value);
}
if (_body_env && !error.isSet() &&
((strncasecmp(*(value[0]), "text/enriched", 13) == 0)
|| (strncasecmp(*(value[0]), "text/richtext", 13) == 0))) {
char *new_body = (char *)malloc((unsigned)(_body_len*2));
int size = 0;
RFCMIME::readTextEnriched(new_body, size, _body, _body_decoded_len);
new_body = (char *)realloc(new_body, size+2);
if (_must_free_body == DTM_TRUE)
free(_body);
_must_free_body = DTM_TRUE;
_body_decoded_len = size;
_body = new_body;
// Changed this temporarily until after release. We really should not
// be null terminating these buffers.
(_body)[_body_decoded_len] = 0;
}
error.clear();
return;
}
// NOTES ON HANDLING OF "FILE NAMES" FOR BODY PARTS IN MIME COMPLIANT ENTITIES:
// (see full description in evaluation for bug 1189035)
//
// The ability to provide a "file name" for a body part in a MIME compliant
// entity is partially addressed in RFC 1341 [MIME: Multipurpose Internet Mail
// Extentions] and RFC 1521 [which obsoleted RFC 1341].
//
// RFC 1341 proposed a solution to the file name problem (Content-Type:
// type; name=name); RFC 1521 subsequently depreciated this solution in
// favor of a to-be-defined future specification of "Content-Disposition".
//
// In essence there is an anticipation that "Content-Disposition" will
// be defined in a future RFC such that the notion of a "file name" may
// be given to a body part of a MIME compliant entity.
//
// OpenWindows mailtool currently recognizes "Content-Description" on MIME
// compliant entities and uses that information as the "file name" for
// an attachment (as per a loose interpretation of RFC 1521).
//
// CDE DtMail currently sends out and recognizes "X-Content-Name" on MIME
// compliant entities and uses that information as the "file name" for an
// attachment. This is essentially a non-standard header field as per RFC
// 1521:
//
// "X-" fields may be created for experimental or private purposes,
// with the recognition that the information they contain may be
// lost at some gateways.
//
// Since OpenWindows mailtool does not understand "X-Content-Name", any
// body part in e-mail originating from CDE DtMail does not appear to
// have a file name when read by mailtool.
//
// Given these facts:
//
// . OpenWindows mailtool cannot be changed until at least the Solaris
// 2.5 release (if at all).
//
// . OpenWindows mailtool is recognizing a valid MIME header field
// which is essentially "free form" in nature.
//
// . CDE DtMail is currently using an experimental or private field
// which is not part of the standard and is not guaranteed to survive
// transport across gateways.
//
// . There is no officially proscribed method for providing the "file
// name" of a body part in a MIME compliant entity in RFC 1521.
//
// The reasonable approach to take to solve this problem is:
//
// 1. Have DtMail use "Content-Description" to transmit the "file name"
// for a body part - this achieves compatibility with mailtool.
//
// 2. Have DtMail also continue to use "X-Content-Name" to transmit the
// "file name" - this maintains compatibility with previous versions
// of DtMail which only recognize this header.
//
// 3. Have Dtmail recognize both "Content-Description" and "X-Content-Name"
// as specifying the "file name" for a body part. In the case that both
// fields are present, "Content-Description" takes precedence over
// "X-Content-Name".
//
// 4. When "Content-Disposition" is properly defined and included as part
// of an updated MIME specification, revisit this issue.
//
//
// So, since dtmail currently *ignores* the "Content-Description" field,
// we overload the "getNameHeaderVal" function to use "Content-Description"
// first, then the older unofficial experimental "X-Content-Name". If
// and when Content-Disposition takes hold, it will have to override
// Content-Description when both are present.
//
//
// March 25, 1997
// The Content-Disposition field has been designated as the primary
// header field for transmitting file names. See RFC 1806. Therefore
// the algorithm has been updated as follows.
//
// 1. DtMail checks the following headers for the "filename" for a body part:
// o The "filename" parameter of the "Content-Disposition" header field.
// o The contents of the "Content-Description" header field.
// o The "name" parameter of the "Content-Type" header field.
// o The contents of the "Content-Name" header field.
// o The contents of the "X-Content-Name" header field.
//
// 2. DtMail uses the following fields to specify the "filename" for a body
// part in outgoing mail:
// o The "filename" parameter of the "Content-Disposition" header field.
// o The contents of the "Content-Description" header field.
//
char *
MIMEBodyPart::getDescription(DtMailEnv &)
{
// Don't have this return anything without checking
// ramifications with getNameHeaderValue
// No need to clear error object here because we assume it has already
// been cleared by the caller and nothing has touched it in this method.
// error.clear();
return(NULL);
}
char *
MIMEBodyPart::getNameHeaderVal(DtMailEnv & error)
{
DtMailValueSeq value;
if (_body_env == NULL) {
// No need to clear the error object...it is unchanged from the
// state we received it in.
//error.clear();
return(NULL);
}
// The current standard seems to be to use the "Content-Disposition"
// header as the primary mechanism for transmitting file names.
//
_body_env->getHeader(error, "Content-Disposition", DTM_FALSE, value);
if (error.isNotSet()) {
char *param = parameterValue(value, "filename", DTM_FALSE);
if (NULL != param)
return strdup(param);
}
error.clear();
// In keeping with the current undefined nature of
// file names for body parts in RFC 1521, and to be
// compatible with OpenWindows mailtool, the first
// overriding "name" comes from "Content-Description"
//
_body_env->getHeader(error, "Content-Description", DTM_FALSE, value);
if (error.isNotSet()) {
return(strdup(*(value[0])));
}
error.clear();
// For backward compatibility with older mail agents, check the "Name"
// parameter in the "Content-Type" header.
//
_body_env->getHeader(error, "Content-Type", DTM_FALSE, value);
if (error.isNotSet()) {
char *param = parameterValue(value, "name", DTM_FALSE);
if (NULL != param)
return strdup(param);
}
error.clear();
// Next we remain compatible with previous versions
// of DtMail that used "X-Content-Name" instead of
// "Content-Description" for the file name of a
// body part (1-27-95)
//
_body_env->getHeader(error, "X-Content-Name",
DTM_FALSE, value);
if (error.isNotSet()) {
return(strdup(*(value[0])));
}
error.clear();
// This code was in dtmail on 1-27-95 and even though
// that version of dtmail did not send out "Content-Name"
// (which is not part of RFC 1341 or 1521) it doesnt
// hurt to recognize it if its the only header there.
//
_body_env->getHeader(error, "Content-Name",
DTM_FALSE, value);
if (error.isNotSet()) {
return(strdup(*(value[0])));
}
error.clear(); // NULL is the real error here.
// No name for this body part
//
return(NULL);
}
char *
MIMEBodyPart::getName(DtMailEnv & error)
{
char * h_name = getNameHeaderVal(error);
// don't care about the error returned by getNameHeaderVal()
error.clear();
if (h_name) {
return(h_name);
}
if (!_body_type) {
getDtType(error);
if (error.isSet()) {
error.clear();
return(strdup("Attachment"));
}
}
char * pat = DtDtsDataTypeToAttributeValue(_body_type,
"NAME_TEMPLATE",
NULL);
if (pat) {
int max_len = strlen(pat) + 20;
char * name = (char*) malloc((size_t) max_len);
sprintf(name, pat, "Attachment");
DtDtsFreeAttributeValue(pat);
return(name);
}
return(strdup("Attachment"));
}
void
MIMEBodyPart::setName(DtMailEnv & error, const char * name)
{
if (_body_env) {
_body_env->setHeader(error, "X-Content-Name", DTM_TRUE, name);
}
}
unsigned long
MIMEBodyPart::getLength(DtMailEnv & error)
{
MutexLock lock_scope(_obj_mutex);
loadBody(error);
if (error.isSet()) {
// propogate the error back to the caller.
return (0);
}
// We have to treat external bodies differently. The headers on these
// parts contain useful information to the client.
//
const char * mime_type;
DtMailValueSeq value;
if (_body_env) {
_body_env->getHeader(error, "Content-Type", DTM_FALSE, value);
}
if (_body_env && !error.isSet()) {
mime_type = *(value[0]);
}
else {
// only need to clear the error object if getHeader returned
// an error condition. We don't want to propogate the error
// back up the calling sequence.
error.clear();
mime_type = "text/plain";
}
unsigned long len;
if (strncasecmp(mime_type, "message/external-body", 21) == 0) {
const char * contents = _body_start;
for (;contents < (_body_text + _body_len); contents++) {
if (*contents == '\n') {
break;
}
}
contents += 1;
len = _body_len + (_body_text - contents);
}
else {
len = _body_decoded_len;
}
return(len);
}
int
MIMEBodyPart::rfcSize(const char *, DtMailBoolean &)
{
return(0);
}
char *
MIMEBodyPart::writeBodyParts(char * buf)
{
return(buf);
}
const void *
MIMEBodyPart::getBody(DtMailEnv & error)
{
// No need to clear the error here, should be cleared by the object
// that instantiated it.
// error.clear();
if (!_body) {
loadBody(error);
// loadBody currently (version 1.31) clears the error before
// returning, so the following check is not needed. We'll
// leave it alone on the chance that loadBody() will someday
// return an error condition.
if (error.isSet()) {
return(NULL);
}
}
// We have to treat external bodies differently. The headers on these
// parts contain useful information to the client.
//
const char * mime_type;
DtMailValueSeq value;
if (_body_env) {
_body_env->getHeader(error, "Content-Type", DTM_FALSE, value);
}
if (_body_env && !error.isSet()) {
// Handle "Content-Type: text" problem with /usr/lib/mail.local
//
if (strcasecmp(*(value[0]), "text")==0)
mime_type = "text/plain";
else
mime_type = *(value[0]);
}
else {
error.clear();
mime_type = "text/plain";
}
const char * contents;
if (strncasecmp(mime_type, "message/external-body", 21) == 0) {
contents = _body_start;
for (;contents < (_body_text + _body_len); contents++) {
if (*contents == '\n') {
break;
}
}
contents += 1;
}
else {
contents = _body;
}
return(contents);
}
// For CHARSET
// Given the Content-Type field, extract the charset value.
// Returns one of the following:
// 1) charset value,
// Caller MUST FREE this return value.
// 2) NULL if charset is not specified but Content-Type specifies
// text/plain data. If this routine returns NULL, that means
// charset is not specified but the data is text/plain. Therefore,
// (as in the case of MIMEBodyPart::loadBody) caller
// will call csToConvName("DEFAULT.<locale>") and csToConvName will return
// a default iconv conversion name for the current locale.
// This is the case because some (old) mailers do not set the charset value
// but encodes the message in a "popular" codeset. The default conversion
// name for a particular locale assumes the "popular" codeset used.
// 3) non NULL but invalid charset value if Content-Type does not specify
// text/plain data. Caller MUST FREE this return value.
char *
MIMEBodyPart::csFromContentType(DtMailValueSeq &value)
{
char *cs_str = NULL;
char *val_ptr = NULL;
int quoted = 0;
// value[0] should be valid else error would have occurred before
// this routine ever gets called. And value index is 0 because
// previous value stored should have been removed.
const char *val = *(value[0]);
// Check to see if Content-Type field specifies text/plain data.
// If so, look for charset value
// else, returns value in Content-Type field
if ( strstr(val, "text") == NULL ) {
if ( strstr(val, "TEXT") == NULL ) {
cs_str = strdup(val);
return cs_str;
}
}
// Get charset value
val_ptr = const_cast <char *> (strstr(val, "charset="));
if ( val_ptr == NULL ) {
val_ptr = const_cast <char *> (strstr(val, "CHARSET="));
}
if ( val_ptr == NULL ) {
return NULL;
}
val_ptr = val_ptr+8;
// Check if charset value is quoted
if ( val_ptr[0] == '"' ) {
val_ptr++;
quoted = 1;
}
if ( quoted ) {
cs_str = strdup(strtok(val_ptr, "\""));
} else {
cs_str = (char *)calloc(strlen(val_ptr)+1, sizeof(char));
sscanf(val_ptr, "%s", cs_str);
}
return cs_str;
}
// End of For CHARSET
char *
MIMEBodyPart::parameterValue(
DtMailValueSeq &value,
const char * parameter,
DtMailBoolean isCaseSensitive)
{
char *lasts=NULL;
char *ptok, *vtok;
char *parm, *val;
int rtn = 0;
val = strdup(*(value[0]));
vtok = strrchr(val, ';');
while (NULL != vtok)
{
*vtok = '\0';
vtok++;
while(isspace(*vtok))
vtok++;
if (isCaseSensitive)
rtn = strncmp(vtok, parameter, strlen(vtok));
else
rtn = strncasecmp(vtok, parameter, strlen(vtok));
if (0 == rtn)
{
ptok = strrchr(vtok, '=');
if (NULL == ptok)
{
free(val);
return NULL;
}
ptok++;
if (*ptok == '"' )
{
ptok++;
parm = strdup(strtok(ptok, (const char *) "\""));
}
else
parm = strdup(ptok);
free(val);
return parm;
}
vtok = strrchr(val, ';');
}
free(val);
return NULL;
}
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