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lsapilib.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2013 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: George Wang <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/*
Copyright (c) 2007, Lite Speed Technologies Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of the Lite Speed Technologies Inc nor the
names of its contributors may be used to endorse or promote
products derived from this software without specific prior
written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <lsapilib.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <sys/un.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#define LSAPI_ST_REQ_HEADER 1
#define LSAPI_ST_REQ_BODY 2
#define LSAPI_ST_RESP_HEADER 4
#define LSAPI_ST_RESP_BODY 8
#define LSAPI_RESP_BUF_SIZE 8192
#define LSAPI_INIT_RESP_HEADER_LEN 4096
static int g_inited = 0;
static int g_running = 1;
static int s_ppid;
LSAPI_Request g_req = { -1, -1 };
void Flush_RespBuf_r( LSAPI_Request * pReq );
static const char *CGI_HEADERS[H_TRANSFER_ENCODING+1] =
{
"HTTP_ACCEPT", "HTTP_ACCEPT_CHARSET",
"HTTP_ACCEPT_ENCODING",
"HTTP_ACCEPT_LANGUAGE", "HTTP_AUTHORIZATION",
"HTTP_CONNECTION", "CONTENT_TYPE",
"CONTENT_LENGTH", "HTTP_COOKIE", "HTTP_COOKIE2",
"HTTP_HOST", "HTTP_PRAGMA",
"HTTP_REFERER", "HTTP_USER_AGENT",
"HTTP_CACHE_CONTROL",
"HTTP_IF_MODIFIED_SINCE", "HTTP_IF_MATCH",
"HTTP_IF_NONE_MATCH",
"HTTP_IF_RANGE",
"HTTP_IF_UNMODIFIED_SINCE",
"HTTP_KEEP_ALIVE",
"HTTP_RANGE",
"HTTP_X_FORWARDED_FOR",
"HTTP_VIA",
"HTTP_TRANSFER_ENCODING"
};
static int CGI_HEADER_LEN[H_TRANSFER_ENCODING+1] = {
11, 19, 20, 20, 18, 15, 12, 14, 11, 12, 9, 11, 12, 15, 18,
22, 13, 18, 13, 24, 15, 10, 20, 8, 22
};
static const char *HTTP_HEADERS[H_TRANSFER_ENCODING+1] = {
"Accept", "Accept-Charset",
"Accept-Encoding",
"Accept-Language", "Authorization",
"Connection", "Content-Type",
"Content-Length", "Cookie", "Cookie2",
"Host", "Pragma",
"Referer", "User-Agent",
"Cache-Control",
"If-Modified-Since", "If-Match",
"If-None-Match",
"If-Range",
"If-Unmodified-Since",
"Keep-Alive",
"Range",
"X-Forwarded-For",
"Via",
"Transfer-Encoding"
};
static int HTTP_HEADER_LEN[H_TRANSFER_ENCODING+1] = {
6, 14, 15, 15, 13, 10, 12, 14, 6, 7, 4, 6, 7, 10, /* user-agent */
13,17, 8, 13, 8, 19, 10, 5, 15, 3, 17
};
static void lsapi_sigpipe( int sig )
{
}
static void lsapi_siguser1( int sig )
{
g_running = 0;
}
#ifndef sighandler_t
typedef void (*sighandler_t)(int);
#endif
static void lsapi_signal(int signo, sighandler_t handler)
{
struct sigaction sa;
sigaction(signo, NULL, &sa);
if (sa.sa_handler == SIG_DFL) {
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = handler;
sigaction(signo, &sa, NULL);
}
}
static inline void lsapi_buildPacketHeader( struct lsapi_packet_header * pHeader,
char type, int len )
{
pHeader->m_versionB0 = LSAPI_VERSION_B0; /* LSAPI protocol version */
pHeader->m_versionB1 = LSAPI_VERSION_B1;
pHeader->m_type = type;
pHeader->m_flag = LSAPI_ENDIAN;
pHeader->m_packetLen.m_iLen = len;
}
static int lsapi_set_nblock( int fd, int nonblock )
{
int val = fcntl( fd, F_GETFL, 0 );
if ( nonblock )
{
if (!( val & O_NONBLOCK ))
{
return fcntl( fd, F_SETFL, val | O_NONBLOCK );
}
}
else
{
if ( val & O_NONBLOCK )
{
return fcntl( fd, F_SETFL, val &(~O_NONBLOCK) );
}
}
return 0;
}
static int lsapi_close( int fd )
{
int ret;
while( 1 ) {
ret = close( fd );
if (( ret == -1 )&&( errno == EINTR )&&(g_running)) {
continue;
}
return ret;
}
}
static inline int lsapi_read( int fd, void * pBuf, int len )
{
int ret;
while( 1 ) {
ret = read( fd, (char *)pBuf, len );
if (( ret == -1 )&&( errno == EINTR )&&(g_running)) {
continue;
}
return ret;
}
}
static int lsapi_writev( int fd, struct iovec ** pVec, int count, int totalLen )
{
int ret;
int left = totalLen;
int n = count;
while(( left > 0 )&&g_running ) {
ret = writev( fd, *pVec, n );
if ( ret > 0 ) {
left -= ret;
if (( left <= 0)||( !g_running )) {
return totalLen - left;
}
while( ret > 0 ) {
if ( (*pVec)->iov_len <= ret ) {
ret -= (*pVec)->iov_len;
++(*pVec);
} else {
(*pVec)->iov_base = (char *)(*pVec)->iov_base + ret;
(*pVec)->iov_len -= ret;
break;
}
}
} else if ( ret == -1 ) {
if ( errno == EAGAIN ) {
if ( totalLen - left > 0 ) {
return totalLen - left;
} else {
return -1;
}
} else {
if ( errno != EINTR ) {
return ret;
}
}
}
}
return totalLen - left;
}
static inline int allocateBuf( LSAPI_Request * pReq, int size )
{
char * pBuf = (char *)realloc( pReq->m_pReqBuf, size );
if ( pBuf ) {
pReq->m_pReqBuf = pBuf;
pReq->m_reqBufSize = size;
pReq->m_pHeader = (struct lsapi_req_header *)pReq->m_pReqBuf;
return 0;
}
return -1;
}
static int allocateIovec( LSAPI_Request * pReq, int n )
{
struct iovec * p = (struct iovec *)realloc(
pReq->m_pIovec, sizeof(struct iovec) * n );
if ( !p ) {
return -1;
}
pReq->m_pIovecToWrite = p + ( pReq->m_pIovecToWrite - pReq->m_pIovec );
pReq->m_pIovecCur = p + ( pReq->m_pIovecCur - pReq->m_pIovec );
pReq->m_pIovec = p;
pReq->m_pIovecEnd = p + n;
return 0;
}
static int allocateRespHeaderBuf( LSAPI_Request * pReq, int size )
{
char * p = (char *)realloc( pReq->m_pRespHeaderBuf, size );
if ( !p ) {
return -1;
}
pReq->m_pRespHeaderBufPos = p + ( pReq->m_pRespHeaderBufPos - pReq->m_pRespHeaderBuf );
pReq->m_pRespHeaderBuf = p;
pReq->m_pRespHeaderBufEnd = p + size;
return 0;
}
static inline int verifyHeader( struct lsapi_packet_header * pHeader, char pktType )
{
if (( LSAPI_VERSION_B0 != pHeader->m_versionB0 )||
( LSAPI_VERSION_B1 != pHeader->m_versionB1 )||
( pktType != pHeader->m_type )) {
return -1;
}
if ( LSAPI_ENDIAN != (pHeader->m_flag & LSAPI_ENDIAN_BIT )) {
register char b;
b = pHeader->m_packetLen.m_bytes[0];
pHeader->m_packetLen.m_bytes[0] = pHeader->m_packetLen.m_bytes[3];
pHeader->m_packetLen.m_bytes[3] = b;
b = pHeader->m_packetLen.m_bytes[1];
pHeader->m_packetLen.m_bytes[1] = pHeader->m_packetLen.m_bytes[2];
pHeader->m_packetLen.m_bytes[2] = b;
}
return pHeader->m_packetLen.m_iLen;
}
static int allocateEnvList( struct LSAPI_key_value_pair ** pEnvList,
int *curSize, int newSize )
{
struct LSAPI_key_value_pair * pBuf;
if ( *curSize >= newSize ) {
return 0;
}
if ( newSize > 8192 ) {
return -1;
}
pBuf = (struct LSAPI_key_value_pair *)realloc( *pEnvList, newSize *
sizeof(struct LSAPI_key_value_pair) );
if ( pBuf ) {
*pEnvList = pBuf;
*curSize = newSize;
return 0;
} else {
return -1;
}
}
static inline int isPipe( int fd )
{
char achPeer[128];
socklen_t len = 128;
if (( getpeername( fd, (struct sockaddr *)achPeer, &len ) != 0 )&&
( errno == ENOTCONN )) {
return 0;
} else {
return 1;
}
}
static int parseEnv( struct LSAPI_key_value_pair * pEnvList, int count,
char **pBegin, char * pEnd )
{
struct LSAPI_key_value_pair * pEnvEnd;
int keyLen = 0, valLen = 0;
if ( count > 8192 ) {
return -1;
}
pEnvEnd = pEnvList + count;
while( pEnvList != pEnvEnd ) {
if ( pEnd - *pBegin < 4 ) {
return -1;
}
keyLen = *((unsigned char *)((*pBegin)++));
keyLen = (keyLen << 8) + *((unsigned char *)((*pBegin)++));
valLen = *((unsigned char *)((*pBegin)++));
valLen = (valLen << 8) + *((unsigned char *)((*pBegin)++));
if ( *pBegin + keyLen + valLen > pEnd ) {
return -1;
}
if (( !keyLen )||( !valLen )) {
return -1;
}
pEnvList->pKey = *pBegin;
*pBegin += keyLen;
pEnvList->pValue = *pBegin;
*pBegin += valLen;
pEnvList->keyLen = keyLen - 1;
pEnvList->valLen = valLen - 1;
++pEnvList;
}
if ( memcmp( *pBegin, "\0\0\0\0", 4 ) != 0 ) {
return -1;
}
*pBegin += 4;
return 0;
}
static inline void swapIntEndian( int * pInteger )
{
char * p = (char *)pInteger;
register char b;
b = p[0];
p[0] = p[3];
p[3] = b;
b = p[1];
p[1] = p[2];
p[2] = b;
}
static inline void fixEndian( LSAPI_Request * pReq )
{
struct lsapi_req_header *p= pReq->m_pHeader;
swapIntEndian( &p->m_httpHeaderLen );
swapIntEndian( &p->m_reqBodyLen );
swapIntEndian( &p->m_scriptFileOff );
swapIntEndian( &p->m_scriptNameOff );
swapIntEndian( &p->m_queryStringOff );
swapIntEndian( &p->m_requestMethodOff );
swapIntEndian( &p->m_cntUnknownHeaders );
swapIntEndian( &p->m_cntEnv );
swapIntEndian( &p->m_cntSpecialEnv );
}
static void fixHeaderIndexEndian( LSAPI_Request * pReq )
{
int i;
for( i = 0; i < H_TRANSFER_ENCODING; ++i ) {
if ( pReq->m_pHeaderIndex->m_headerOff[i] ) {
register char b;
char * p = (char *)(&pReq->m_pHeaderIndex->m_headerLen[i]);
b = p[0];
p[0] = p[1];
p[1] = b;
swapIntEndian( &pReq->m_pHeaderIndex->m_headerOff[i] );
}
}
if ( pReq->m_pHeader->m_cntUnknownHeaders > 0 ) {
struct lsapi_header_offset * pCur, *pEnd;
pCur = pReq->m_pUnknownHeader;
pEnd = pCur + pReq->m_pHeader->m_cntUnknownHeaders;
while( pCur < pEnd ) {
swapIntEndian( &pCur->nameOff );
swapIntEndian( &pCur->nameLen );
swapIntEndian( &pCur->valueOff );
swapIntEndian( &pCur->valueLen );
++pCur;
}
}
}
static int parseRequest( LSAPI_Request * pReq, int totalLen )
{
int shouldFixEndian;
char * pBegin = pReq->m_pReqBuf + sizeof( struct lsapi_req_header );
char * pEnd = pReq->m_pReqBuf + totalLen;
shouldFixEndian = ( LSAPI_ENDIAN != (
pReq->m_pHeader->m_pktHeader.m_flag & LSAPI_ENDIAN_BIT ) );
if ( shouldFixEndian ) {
fixEndian( pReq );
}
if ( (pReq->m_specialEnvListSize < pReq->m_pHeader->m_cntSpecialEnv )&&
allocateEnvList( &pReq->m_pSpecialEnvList,
&pReq->m_specialEnvListSize,
pReq->m_pHeader->m_cntSpecialEnv ) == -1 ) {
return -1;
}
if ( (pReq->m_envListSize < pReq->m_pHeader->m_cntEnv )&&
allocateEnvList( &pReq->m_pEnvList, &pReq->m_envListSize,
pReq->m_pHeader->m_cntEnv ) == -1 ) {
return -1;
}
if ( parseEnv( pReq->m_pSpecialEnvList,
pReq->m_pHeader->m_cntSpecialEnv,
&pBegin, pEnd ) == -1 ) {
return -1;
}
if ( parseEnv( pReq->m_pEnvList, pReq->m_pHeader->m_cntEnv,
&pBegin, pEnd ) == -1 ) {
return -1;
}
pReq->m_pScriptFile = pReq->m_pReqBuf + pReq->m_pHeader->m_scriptFileOff;
pReq->m_pScriptName = pReq->m_pReqBuf + pReq->m_pHeader->m_scriptNameOff;
pReq->m_pQueryString = pReq->m_pReqBuf + pReq->m_pHeader->m_queryStringOff;
pReq->m_pRequestMethod = pReq->m_pReqBuf + pReq->m_pHeader->m_requestMethodOff;
pBegin = pReq->m_pReqBuf + (( pBegin - pReq->m_pReqBuf + 7 ) & (~0x7));
pReq->m_pHeaderIndex = ( struct lsapi_http_header_index * )pBegin;
pBegin += sizeof( struct lsapi_http_header_index );
pReq->m_pUnknownHeader = (struct lsapi_header_offset *)pBegin;
pBegin += sizeof( struct lsapi_header_offset) *
pReq->m_pHeader->m_cntUnknownHeaders;
pReq->m_pHttpHeader = pBegin;
pBegin += pReq->m_pHeader->m_httpHeaderLen;
if ( pBegin != pEnd ) {
return -1;
}
if ( shouldFixEndian ) {
fixHeaderIndexEndian( pReq );
}
return 0;
}
static struct lsapi_packet_header ack = {'L', 'S',
LSAPI_REQ_RECEIVED, LSAPI_ENDIAN, {LSAPI_PACKET_HEADER_LEN} };
static inline int notify_req_received( LSAPI_Request * pReq )
{
if ( write( pReq->m_fd, &ack, LSAPI_PACKET_HEADER_LEN )
< LSAPI_PACKET_HEADER_LEN ) {
return -1;
}
return 0;
}
static int readReq( LSAPI_Request * pReq )
{
int len;
int packetLen;
if ( !pReq ) {
return -1;
}
if ( pReq->m_reqBufSize < 8192 ) {
if ( allocateBuf( pReq, 8192 ) == -1 ) {
return -1;
}
}
while ( pReq->m_bufRead < LSAPI_PACKET_HEADER_LEN ) {
len = lsapi_read( pReq->m_fd, pReq->m_pReqBuf, pReq->m_reqBufSize );
if ( len <= 0 ) {
return -1;
}
pReq->m_bufRead += len;
}
pReq->m_reqState = LSAPI_ST_REQ_HEADER;
packetLen = verifyHeader( &pReq->m_pHeader->m_pktHeader, LSAPI_BEGIN_REQUEST );
if ( packetLen < 0 ) {
return -1;
}
if ( packetLen > LSAPI_MAX_HEADER_LEN ) {
return -1;
}
if ( packetLen + 1024 > pReq->m_reqBufSize ) {
if ( allocateBuf( pReq, packetLen + 1024 ) == -1 ) {
return -1;
}
}
while( packetLen > pReq->m_bufRead ) {
len = lsapi_read( pReq->m_fd, pReq->m_pReqBuf + pReq->m_bufRead, packetLen - pReq->m_bufRead );
if ( len <= 0 ) {
return -1;
}
pReq->m_bufRead += len;
}
if ( parseRequest( pReq, packetLen ) < 0 ) {
return -1;
}
pReq->m_bufProcessed = packetLen;
pReq->m_reqState = LSAPI_ST_REQ_BODY | LSAPI_ST_RESP_HEADER;
return notify_req_received( pReq );
}
int LSAPI_Init(void)
{
if ( !g_inited ) {
lsapi_signal(SIGPIPE, lsapi_sigpipe);
lsapi_signal(SIGUSR1, lsapi_siguser1);
#if defined(SIGXFSZ) && defined(SIG_IGN)
signal(SIGXFSZ, SIG_IGN);
#endif
/* let STDOUT function as STDERR,
just in case writing to STDOUT directly */
dup2( 2, 1 );
if ( LSAPI_InitRequest( &g_req, LSAPI_SOCK_FILENO ) == -1 ) {
return -1;
}
g_inited = 1;
s_ppid = getppid();
}
return 0;
}
void LSAPI_Stop(void)
{
g_running = 0;
}
int LSAPI_IsRunning(void)
{
return g_running;
}
int LSAPI_InitRequest( LSAPI_Request * pReq, int fd )
{
if ( !pReq ) {
return -1;
}
memset( pReq, 0, sizeof( LSAPI_Request ) );
if ( allocateIovec( pReq, 16 ) == -1 ) {
return -1;
}
pReq->m_pRespBuf = pReq->m_pRespBufPos = (char *)malloc( LSAPI_RESP_BUF_SIZE );
if ( !pReq->m_pRespBuf ) {
return -1;
}
pReq->m_pRespBufEnd = pReq->m_pRespBuf + LSAPI_RESP_BUF_SIZE;
pReq->m_pIovecCur = pReq->m_pIovecToWrite = pReq->m_pIovec + 1;
pReq->m_respPktHeaderEnd = &pReq->m_respPktHeader[5];
if ( allocateRespHeaderBuf( pReq, LSAPI_INIT_RESP_HEADER_LEN ) == -1 ) {
return -1;
}
if ( isPipe( fd ) ) {
pReq->m_fdListen = -1;
pReq->m_fd = fd;
} else {
pReq->m_fdListen = fd;
pReq->m_fd = -1;
lsapi_set_nblock( fd, 1 );
}
return 0;
}
int LSAPI_Is_Listen( void )
{
return LSAPI_Is_Listen_r( &g_req );
}
int LSAPI_Is_Listen_r( LSAPI_Request * pReq)
{
return pReq->m_fdListen != -1;
}
int LSAPI_Accept_r( LSAPI_Request * pReq )
{
char achPeer[128];
socklen_t len;
int nodelay = 1;
if ( !pReq ) {
return -1;
}
if ( LSAPI_Finish_r( pReq ) == -1 ) {
return -1;
}
while( g_running ) {
if ( pReq->m_fd == -1 ) {
if ( pReq->m_fdListen != -1) {
len = sizeof( achPeer );
pReq->m_fd = accept( pReq->m_fdListen,
(struct sockaddr *)&achPeer, &len );
if ( pReq->m_fd == -1 ) {
if (( errno == EINTR )||( errno == EAGAIN)) {
continue;
} else {
return -1;
}
} else {
lsapi_set_nblock( pReq->m_fd , 0 );
if (((struct sockaddr *)&achPeer)->sa_family == AF_INET ) {
setsockopt(pReq->m_fd, IPPROTO_TCP, TCP_NODELAY,
(char *)&nodelay, sizeof(nodelay));
}
}
} else {
return -1;
}
}
if ( !readReq( pReq ) ) {
break;
}
lsapi_close( pReq->m_fd );
pReq->m_fd = -1;
LSAPI_Reset_r( pReq );
}
return 0;
}
static struct lsapi_packet_header finish = {'L', 'S',
LSAPI_RESP_END, LSAPI_ENDIAN, {LSAPI_PACKET_HEADER_LEN} };
int LSAPI_Finish_r( LSAPI_Request * pReq )
{
/* finish req body */
if ( !pReq ) {
return -1;
}
if (pReq->m_reqState) {
if ( pReq->m_fd != -1 ) {
if ( pReq->m_reqState & LSAPI_ST_RESP_HEADER ) {
LSAPI_FinalizeRespHeaders_r( pReq );
}
if ( pReq->m_pRespBufPos != pReq->m_pRespBuf ) {
Flush_RespBuf_r( pReq );
}
pReq->m_pIovecCur->iov_base = (void *)&finish;
pReq->m_pIovecCur->iov_len = LSAPI_PACKET_HEADER_LEN;
pReq->m_totalLen += LSAPI_PACKET_HEADER_LEN;
++pReq->m_pIovecCur;
LSAPI_Flush_r( pReq );
}
LSAPI_Reset_r( pReq );
}
return 0;
}
void LSAPI_Reset_r( LSAPI_Request * pReq )
{
pReq->m_pRespBufPos = pReq->m_pRespBuf;
pReq->m_pIovecCur = pReq->m_pIovecToWrite = pReq->m_pIovec + 1;
pReq->m_pRespHeaderBufPos = pReq->m_pRespHeaderBuf;
memset( &pReq->m_pHeaderIndex, 0,
(char *)(pReq->m_respHeaderLen) - (char *)&pReq->m_pHeaderIndex );
}
int LSAPI_Release_r( LSAPI_Request * pReq )
{
if ( pReq->m_pReqBuf ) {
free( pReq->m_pReqBuf );
}
if ( pReq->m_pSpecialEnvList ) {
free( pReq->m_pSpecialEnvList );
}
if ( pReq->m_pEnvList ) {
free( pReq->m_pEnvList );
}
if ( pReq->m_pRespHeaderBuf ) {
free( pReq->m_pRespHeaderBuf );
}
return 0;
}
char * LSAPI_GetHeader_r( LSAPI_Request * pReq, int headerIndex )
{
int off;
if ( !pReq || ((unsigned int)headerIndex > H_TRANSFER_ENCODING) ) {
return NULL;
}
off = pReq->m_pHeaderIndex->m_headerOff[ headerIndex ];
if ( !off ) {
return NULL;
}
if ( *(pReq->m_pHttpHeader + off +
pReq->m_pHeaderIndex->m_headerLen[ headerIndex ]) ) {
*( pReq->m_pHttpHeader + off +
pReq->m_pHeaderIndex->m_headerLen[ headerIndex ]) = 0;
}
return pReq->m_pHttpHeader + off;
}
static int readBodyToReqBuf( LSAPI_Request * pReq )
{
int bodyLeft;
int len = pReq->m_bufRead - pReq->m_bufProcessed;
if ( len > 0 ) {
return len;
}
pReq->m_bufRead = pReq->m_bufProcessed = pReq->m_pHeader->m_pktHeader.m_packetLen.m_iLen;
bodyLeft = pReq->m_pHeader->m_reqBodyLen - pReq->m_reqBodyRead;
len = pReq->m_reqBufSize - pReq->m_bufRead;
if ( len < 0 ) {
return -1;
}
if ( len > bodyLeft ) {
len = bodyLeft;
}
len = lsapi_read( pReq->m_fd, pReq->m_pReqBuf + pReq->m_bufRead, len );
if ( len > 0 ) {
pReq->m_bufRead += len;
}
return len;
}
int LSAPI_ReqBodyGetChar_r( LSAPI_Request * pReq )
{
if (!pReq || (pReq->m_fd ==-1) ) {
return EOF;
}
if ( pReq->m_bufProcessed >= pReq->m_bufRead ) {
if ( readBodyToReqBuf( pReq ) <= 0 ) {
return EOF;
}
}
++pReq->m_reqBodyRead;
return (unsigned char)*(pReq->m_pReqBuf + pReq->m_bufProcessed++);
}
int LSAPI_ReqBodyGetLine_r( LSAPI_Request * pReq, char * pBuf, int bufLen, int *getLF )
{
int len;
int left;
char * pBufEnd = pBuf + bufLen - 1;
char * pBufCur = pBuf;
char * pCur;
char * p;
if (!pReq || (pReq->m_fd ==-1) ||( !pBuf )||(bufLen < 0 )|| !getLF ) {
return -1;
}
*getLF = 0;
while( (left = pBufEnd - pBufCur ) > 0 ) {
len = pReq->m_bufRead - pReq->m_bufProcessed;
if ( len <= 0 ) {
if ( (len = readBodyToReqBuf( pReq )) <= 0 ) {
*getLF = 1;
break;
}
}
if ( len > left ) {
len = left;
}
pCur = pReq->m_pReqBuf + pReq->m_bufProcessed;
p = memchr( pCur, '\n', len );
if ( p ) {
len = p - pCur + 1;
}
memmove( pBufCur, pCur, len );
pBufCur += len;
pReq->m_bufProcessed += len;
pReq->m_reqBodyRead += len;
if ( p ) {
*getLF = 1;
break;
}
}
*pBufCur = 0;
return pBufCur - pBuf;
}
int LSAPI_ReadReqBody_r( LSAPI_Request * pReq, char * pBuf, int bufLen )
{
int len;
int total;
/* char *pOldBuf = pBuf; */
if (!pReq || (pReq->m_fd ==-1) || ( !pBuf )||(bufLen < 0 )) {
return -1;
}
total = pReq->m_pHeader->m_reqBodyLen - pReq->m_reqBodyRead;
if ( total <= 0 ) {
return 0;
}
if ( total < bufLen ) {
bufLen = total;
}
total = 0;
len = pReq->m_bufRead - pReq->m_bufProcessed;
if ( len > 0 ) {
if ( len > bufLen ) {
len = bufLen;
}
memmove( pBuf, pReq->m_pReqBuf + pReq->m_bufProcessed, len );
pReq->m_bufProcessed += len;
total += len;
pBuf += len;
bufLen -= len;
}
while( bufLen > 0 ) {
len = lsapi_read( pReq->m_fd, pBuf, bufLen );
if ( len > 0 ) {
total += len;
pBuf += len;
bufLen -= len;
} else {
if ( len <= 0 ) {
if ( !total) {
return -1;
}
break;
}
}
}
pReq->m_reqBodyRead += total;
return total;
}
int LSAPI_Write_r( LSAPI_Request * pReq, const char * pBuf, int len )
{
struct lsapi_packet_header * pHeader;
const char * pEnd;
const char * p;
int bufLen;
int toWrite;
int packetLen;
if ( !pReq || !pBuf || (pReq->m_fd == -1) ) {
return -1;
}
if ( len < pReq->m_pRespBufEnd - pReq->m_pRespBufPos ) {
memmove( pReq->m_pRespBufPos, pBuf, len );
pReq->m_pRespBufPos += len;
return len;
}
if ( pReq->m_reqState & LSAPI_ST_RESP_HEADER ) {
LSAPI_FinalizeRespHeaders_r( pReq );
}
pReq->m_reqState |= LSAPI_ST_RESP_BODY;
pHeader = pReq->m_respPktHeader;
p = pBuf;
pEnd = pBuf + len;
bufLen = pReq->m_pRespBufPos - pReq->m_pRespBuf;
while( ( toWrite = pEnd - p ) > 0 ) {
packetLen = toWrite + bufLen;
if ( LSAPI_MAX_DATA_PACKET_LEN < packetLen) {
packetLen = LSAPI_MAX_DATA_PACKET_LEN;
toWrite = packetLen - bufLen;
}
lsapi_buildPacketHeader( pHeader, LSAPI_RESP_STREAM,
packetLen + LSAPI_PACKET_HEADER_LEN );
pReq->m_totalLen += packetLen + LSAPI_PACKET_HEADER_LEN;
pReq->m_pIovecCur->iov_base = (void *)pHeader;
pReq->m_pIovecCur->iov_len = LSAPI_PACKET_HEADER_LEN;
++pReq->m_pIovecCur;
++pHeader;
if ( bufLen > 0 ) {
pReq->m_pIovecCur->iov_base = (void *)pReq->m_pRespBuf;
pReq->m_pIovecCur->iov_len = bufLen;
pReq->m_pRespBufPos = pReq->m_pRespBuf;
++pReq->m_pIovecCur;
bufLen = 0;
}
pReq->m_pIovecCur->iov_base = (void *)p;
pReq->m_pIovecCur->iov_len = toWrite;
++pReq->m_pIovecCur;
p += toWrite;
if ( pHeader >= pReq->m_respPktHeaderEnd - 1) {
if ( LSAPI_Flush_r( pReq ) == -1 ) {
return -1;
}
pHeader = pReq->m_respPktHeader;
}
}
if ( pHeader != pReq->m_respPktHeader ) {
if ( LSAPI_Flush_r( pReq ) == -1 ) {
return -1;
}
}
return p - pBuf;
}
void Flush_RespBuf_r( LSAPI_Request * pReq )
{
struct lsapi_packet_header * pHeader = pReq->m_respPktHeader;
int bufLen = pReq->m_pRespBufPos - pReq->m_pRespBuf;
pReq->m_reqState |= LSAPI_ST_RESP_BODY;
lsapi_buildPacketHeader( pHeader, LSAPI_RESP_STREAM,
bufLen + LSAPI_PACKET_HEADER_LEN );
pReq->m_totalLen += bufLen + LSAPI_PACKET_HEADER_LEN;
pReq->m_pIovecCur->iov_base = (void *)pHeader;
pReq->m_pIovecCur->iov_len = LSAPI_PACKET_HEADER_LEN;
++pReq->m_pIovecCur;
++pHeader;
if ( bufLen > 0 ) {
pReq->m_pIovecCur->iov_base = (void *)pReq->m_pRespBuf;
pReq->m_pIovecCur->iov_len = bufLen;
pReq->m_pRespBufPos = pReq->m_pRespBuf;
++pReq->m_pIovecCur;
bufLen = 0;
}
}