static SECItem *
encodeRevoked(PLArenaPool *arena, CERTOCSPCertID *cid, CERTCertificate *ca)
{
SECItem *response;
PRTime now = PR_Now();
PRTime revocationTime;
CERTOCSPSingleResponse **responses;
CERTOCSPSingleResponse *sr;
if (!arena)
return NULL;
revocationTime = now - 10 * PR_USEC_PER_SEC; /* in the past */
sr = CERT_CreateOCSPSingleResponseRevoked(arena, cid, now, NULL,
revocationTime, NULL);
/* meaning of value 2: one entry + one end marker */
responses = PORT_ArenaNewArray(arena, CERTOCSPSingleResponse*, 2);
if (responses == NULL)
return NULL;
responses[0] = sr;
responses[1] = NULL;
response = CERT_CreateEncodedOCSPSuccessResponse(
arena, ca, ocspResponderID_byName, now, responses, &pwdata);
return response;
}
int
handle_connection(
PRFileDesc *tcp_sock,
PRFileDesc *model_sock,
int requestCert)
{
PRFileDesc *ssl_sock = NULL;
PRFileDesc *local_file_fd = NULL;
char *pBuf; /* unused space at end of buf */
const char *errString;
PRStatus status;
int bufRem; /* unused bytes at end of buf */
int bufDat; /* characters received in buf */
int newln = 0; /* # of consecutive newlns */
int firstTime = 1;
int reqLen;
int rv;
int numIOVs;
PRSocketOptionData opt;
PRIOVec iovs[16];
char msgBuf[160];
char buf[10240];
char fileName[513];
char *getData = NULL; /* inplace conversion */
SECItem postData;
PRBool isOcspRequest = PR_FALSE;
PRBool isPost;
postData.data = NULL;
postData.len = 0;
pBuf = buf;
bufRem = sizeof buf;
VLOG(("httpserv: handle_connection: starting"));
opt.option = PR_SockOpt_Nonblocking;
opt.value.non_blocking = PR_FALSE;
PR_SetSocketOption(tcp_sock, &opt);
VLOG(("httpserv: handle_connection: starting\n"));
ssl_sock = tcp_sock;
if (noDelay) {
opt.option = PR_SockOpt_NoDelay;
opt.value.no_delay = PR_TRUE;
status = PR_SetSocketOption(ssl_sock, &opt);
if (status != PR_SUCCESS) {
errWarn("PR_SetSocketOption(PR_SockOpt_NoDelay, PR_TRUE)");
if (ssl_sock) {
PR_Close(ssl_sock);
}
return SECFailure;
}
}
while (1) {
const char *post;
const char *foundStr = NULL;
const char *tmp = NULL;
newln = 0;
reqLen = 0;
rv = PR_Read(ssl_sock, pBuf, bufRem - 1);
if (rv == 0 ||
(rv < 0 && PR_END_OF_FILE_ERROR == PR_GetError())) {
if (verbose)
errWarn("HDX PR_Read hit EOF");
break;
}
if (rv < 0) {
errWarn("HDX PR_Read");
goto cleanup;
}
/* NULL termination */
pBuf[rv] = 0;
if (firstTime) {
firstTime = 0;
}
pBuf += rv;
bufRem -= rv;
bufDat = pBuf - buf;
/* Parse the input, starting at the beginning of the buffer.
* Stop when we detect two consecutive \n's (or \r\n's)
* as this signifies the end of the GET or POST portion.
* The posted data follows.
*/
while (reqLen < bufDat && newln < 2) {
int octet = buf[reqLen++];
if (octet == '\n') {
newln++;
} else if (octet != '\r') {
newln = 0;
}
}
/* came to the end of the buffer, or second newln
* If we didn't get an empty line (CRLFCRLF) then keep on reading.
*/
if (newln < 2)
continue;
/* we're at the end of the HTTP request.
* If the request is a POST, then there will be one more
* line of data.
* This parsing is a hack, but ok for SSL test purposes.
*/
post = PORT_Strstr(buf, "POST ");
if (!post || *post != 'P')
break;
postData.data = (void *)(buf + reqLen);
tmp = "content-length: ";
foundStr = PL_strcasestr(buf, tmp);
if (foundStr) {
int expectedPostLen;
int havePostLen;
expectedPostLen = atoi(foundStr + strlen(tmp));
havePostLen = bufDat - reqLen;
if (havePostLen >= expectedPostLen) {
postData.len = expectedPostLen;
break;
}
} else {
/* use legacy hack */
/* It's a post, so look for the next and final CR/LF. */
while (reqLen < bufDat && newln < 3) {
int octet = buf[reqLen++];
if (octet == '\n') {
newln++;
}
}
if (newln == 3)
break;
}
} /* read loop */
bufDat = pBuf - buf;
if (bufDat)
do { /* just close if no data */
/* Have either (a) a complete get, (b) a complete post, (c) EOF */
if (reqLen > 0) {
PRBool isGetOrPost = PR_FALSE;
unsigned skipChars = 0;
isPost = PR_FALSE;
if (!strncmp(buf, getCmd, sizeof getCmd - 1)) {
isGetOrPost = PR_TRUE;
skipChars = 4;
} else if (!strncmp(buf, "POST ", 5)) {
isGetOrPost = PR_TRUE;
isPost = PR_TRUE;
skipChars = 5;
}
if (isGetOrPost) {
char *fnBegin = buf;
char *fnEnd;
char *fnstart = NULL;
PRFileInfo info;
fnBegin += skipChars;
fnEnd = strpbrk(fnBegin, " \r\n");
if (fnEnd) {
int fnLen = fnEnd - fnBegin;
if (fnLen < sizeof fileName) {
strncpy(fileName, fnBegin, fnLen);
fileName[fnLen] = 0; /* null terminate */
fnstart = fileName;
/* strip initial / because our root is the current directory*/
while (*fnstart && *fnstart == '/')
++fnstart;
}
}
if (fnstart) {
if (!strncmp(fnstart, "ocsp", 4)) {
if (isPost) {
if (postData.data) {
isOcspRequest = PR_TRUE;
}
} else {
if (!strncmp(fnstart, "ocsp/", 5)) {
isOcspRequest = PR_TRUE;
getData = fnstart + 5;
}
}
} else {
/* try to open the file named.
* If successful, then write it to the client.
*/
status = PR_GetFileInfo(fnstart, &info);
if (status == PR_SUCCESS &&
info.type == PR_FILE_FILE &&
info.size >= 0) {
local_file_fd = PR_Open(fnstart, PR_RDONLY, 0);
}
}
}
}
}
numIOVs = 0;
iovs[numIOVs].iov_base = (char *)outHeader;
iovs[numIOVs].iov_len = (sizeof(outHeader)) - 1;
numIOVs++;
if (isOcspRequest && caRevoInfos) {
CERTOCSPRequest *request = NULL;
PRBool failThisRequest = PR_FALSE;
PLArenaPool *arena = NULL;
if (ocspMethodsAllowed == ocspGetOnly && postData.len) {
failThisRequest = PR_TRUE;
} else if (ocspMethodsAllowed == ocspPostOnly && getData) {
failThisRequest = PR_TRUE;
} else if (ocspMethodsAllowed == ocspRandomGetFailure && getData) {
if (!(rand() % 2)) {
failThisRequest = PR_TRUE;
}
}
if (failThisRequest) {
PR_Write(ssl_sock, outBadRequestHeader, strlen(outBadRequestHeader));
break;
}
/* get is base64, post is binary.
* If we have base64, convert into the (empty) postData array.
*/
if (getData) {
if (urldecode_base64chars_inplace(getData) == SECSuccess) {
/* The code below can handle a NULL arena */
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
NSSBase64_DecodeBuffer(arena, &postData, getData, strlen(getData));
}
}
if (postData.len) {
request = CERT_DecodeOCSPRequest(&postData);
}
if (arena) {
PORT_FreeArena(arena, PR_FALSE);
}
if (!request || !request->tbsRequest ||
!request->tbsRequest->requestList ||
!request->tbsRequest->requestList[0]) {
PORT_Sprintf(msgBuf, "Cannot decode OCSP request.\r\n");
iovs[numIOVs].iov_base = msgBuf;
iovs[numIOVs].iov_len = PORT_Strlen(msgBuf);
numIOVs++;
} else {
/* TODO: support more than one request entry */
CERTOCSPCertID *reqid = request->tbsRequest->requestList[0]->reqCert;
const caRevoInfo *revoInfo = NULL;
PRBool unknown = PR_FALSE;
PRBool revoked = PR_FALSE;
PRTime nextUpdate = 0;
PRTime revoDate = 0;
PRCList *caRevoIter;
caRevoIter = &caRevoInfos->link;
do {
CERTOCSPCertID *caid;
revoInfo = (caRevoInfo *)caRevoIter;
caid = revoInfo->id;
if (SECOID_CompareAlgorithmID(&reqid->hashAlgorithm,
&caid->hashAlgorithm) == SECEqual &&
SECITEM_CompareItem(&reqid->issuerNameHash,
&caid->issuerNameHash) == SECEqual &&
SECITEM_CompareItem(&reqid->issuerKeyHash,
&caid->issuerKeyHash) == SECEqual) {
break;
}
revoInfo = NULL;
caRevoIter = PR_NEXT_LINK(caRevoIter);
} while (caRevoIter != &caRevoInfos->link);
if (!revoInfo) {
unknown = PR_TRUE;
revoInfo = caRevoInfos;
} else {
CERTCrl *crl = &revoInfo->crl->crl;
CERTCrlEntry *entry = NULL;
DER_DecodeTimeChoice(&nextUpdate, &crl->nextUpdate);
if (crl->entries) {
int iv = 0;
/* assign, not compare */
while ((entry = crl->entries[iv++])) {
if (SECITEM_CompareItem(&reqid->serialNumber,
&entry->serialNumber) == SECEqual) {
break;
}
}
}
if (entry) {
/* revoked status response */
revoked = PR_TRUE;
DER_DecodeTimeChoice(&revoDate, &entry->revocationDate);
} else {
/* else good status response */
if (!isPost && ocspMethodsAllowed == ocspGetUnknown) {
unknown = PR_TRUE;
nextUpdate = PR_Now() + (PRTime)60 * 60 * 24 * PR_USEC_PER_SEC; /*tomorrow*/
revoDate = PR_Now() - (PRTime)60 * 60 * 24 * PR_USEC_PER_SEC; /*yesterday*/
}
}
}
{
PRTime now = PR_Now();
PLArenaPool *arena = NULL;
CERTOCSPSingleResponse *sr;
CERTOCSPSingleResponse **singleResponses;
SECItem *ocspResponse;
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (unknown) {
sr = CERT_CreateOCSPSingleResponseUnknown(arena, reqid, now,
&nextUpdate);
} else if (revoked) {
sr = CERT_CreateOCSPSingleResponseRevoked(arena, reqid, now,
&nextUpdate, revoDate, NULL);
} else {
sr = CERT_CreateOCSPSingleResponseGood(arena, reqid, now,
&nextUpdate);
}
/* meaning of value 2: one entry + one end marker */
singleResponses = PORT_ArenaNewArray(arena, CERTOCSPSingleResponse *, 2);
singleResponses[0] = sr;
singleResponses[1] = NULL;
ocspResponse = CERT_CreateEncodedOCSPSuccessResponse(arena,
revoInfo->cert, ocspResponderID_byName, now,
singleResponses, &pwdata);
if (!ocspResponse) {
PORT_Sprintf(msgBuf, "Failed to encode response\r\n");
iovs[numIOVs].iov_base = msgBuf;
iovs[numIOVs].iov_len = PORT_Strlen(msgBuf);
numIOVs++;
} else {
PR_Write(ssl_sock, outOcspHeader, strlen(outOcspHeader));
PR_Write(ssl_sock, ocspResponse->data, ocspResponse->len);
PORT_FreeArena(arena, PR_FALSE);
}
}
CERT_DestroyOCSPRequest(request);
break;
}
} else if (local_file_fd) {
PRInt32 bytes;
int errLen;
bytes = PR_TransmitFile(ssl_sock, local_file_fd, outHeader,
sizeof outHeader - 1,
PR_TRANSMITFILE_KEEP_OPEN,
PR_INTERVAL_NO_TIMEOUT);
if (bytes >= 0) {
bytes -= sizeof outHeader - 1;
FPRINTF(stderr,
"httpserv: PR_TransmitFile wrote %d bytes from %s\n",
bytes, fileName);
break;
}
errString = errWarn("PR_TransmitFile");
errLen = PORT_Strlen(errString);
errLen = PR_MIN(errLen, sizeof msgBuf - 1);
PORT_Memcpy(msgBuf, errString, errLen);
msgBuf[errLen] = 0;
iovs[numIOVs].iov_base = msgBuf;
iovs[numIOVs].iov_len = PORT_Strlen(msgBuf);
numIOVs++;
} else if (reqLen <= 0) { /* hit eof */
PORT_Sprintf(msgBuf, "Get or Post incomplete after %d bytes.\r\n",
bufDat);
iovs[numIOVs].iov_base = msgBuf;
iovs[numIOVs].iov_len = PORT_Strlen(msgBuf);
numIOVs++;
} else if (reqLen < bufDat) {
PORT_Sprintf(msgBuf, "Discarded %d characters.\r\n",
bufDat - reqLen);
iovs[numIOVs].iov_base = msgBuf;
iovs[numIOVs].iov_len = PORT_Strlen(msgBuf);
numIOVs++;
}
if (reqLen > 0) {
if (verbose > 1)
fwrite(buf, 1, reqLen, stdout); /* display it */
iovs[numIOVs].iov_base = buf;
iovs[numIOVs].iov_len = reqLen;
numIOVs++;
}
rv = PR_Writev(ssl_sock, iovs, numIOVs, PR_INTERVAL_NO_TIMEOUT);
if (rv < 0) {
errWarn("PR_Writev");
break;
}
} while (0);