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Some cleanup, and bite the bullet and go ahead and write a simple Http client. Need a cross-platform built-in one to do cli right.

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This commit is contained in:
Adam Ierymenko 2015-04-16 14:13:44 -07:00
parent 6c29e966dd
commit 53cbe485f0
14 changed files with 470 additions and 726 deletions
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2
make-freebsd.mk
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@ -71,7 +71,7 @@ selftest: $(OBJS) selftest.o
# ./buildinstaller.sh
clean:
rm -rf *.o node/*.o controller/*.o osdep/*.o service/*.o ext/http-parser/*.o ext/lz4/*.o build-* zerotier-one zerotier-idtool zerotier-selftest ZeroTierOneInstaller-*
rm -rf *.o node/*.o controller/*.o osdep/*.o service/*.o ext/http-parser/*.o ext/lz4/*.o ext/json-parser/*.o build-* zerotier-one zerotier-idtool zerotier-selftest ZeroTierOneInstaller-*
debug: FORCE
make -j 4 ZT_DEBUG=1

2
make-linux.mk
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@ -76,7 +76,7 @@ installer: one FORCE
./buildinstaller.sh
clean:
rm -rf *.o node/*.o controller/*.o osdep/*.o service/*.o ext/http-parser/*.o ext/lz4/*.o zerotier-one zerotier-idtool zerotier-selftest build-* ZeroTierOneInstaller-* *.deb *.rpm
rm -rf *.o node/*.o controller/*.o osdep/*.o service/*.o ext/http-parser/*.o ext/lz4/*.o ext/json-parser/*.o zerotier-one zerotier-idtool zerotier-selftest build-* ZeroTierOneInstaller-* *.deb *.rpm
debug: FORCE
make -j 4 ZT_DEBUG=1

2
make-mac.mk
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@ -75,7 +75,7 @@ selftest: $(OBJS) selftest.o
# $(CODESIGN) -vvv "build-ZeroTierUI-release/ZeroTier One.app"
clean:
rm -rf *.dSYM build-* *.pkg *.dmg *.o node/*.o controller/*.o service/*.o osdep/*.o ext/http-parser/*.o ext/lz4/*.o zerotier-one zerotier-idtool zerotier-selftest ZeroTierOneInstaller-*
rm -rf *.dSYM build-* *.pkg *.dmg *.o node/*.o controller/*.o service/*.o osdep/*.o ext/http-parser/*.o ext/lz4/*.o ext/json-parser/*.o zerotier-one zerotier-idtool zerotier-selftest ZeroTierOneInstaller-*
# For our use -- builds official signed binary, packages in installer and download DMG
official: FORCE

1
objects.mk
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@ -23,6 +23,7 @@ OBJS=\
node/Switch.o \
node/Topology.o \
node/Utils.o \
osdep/Http.o \
osdep/OSUtils.o \
service/ControlPlane.o \
service/OneService.o

16
one.cpp
View File

@ -75,6 +75,18 @@ using namespace ZeroTier;
static OneService *volatile zt1Service = (OneService *)0;
/****************************************************************************/
/* zerotier-cli personality */
/****************************************************************************/
#ifdef __WINDOWS__
static int cli(int argc, _TCHAR* argv[])
#else
static int cli(int argc,char **argv)
#endif
{
}
/****************************************************************************/
/* zerotier-idtool personality */
/****************************************************************************/
@ -107,9 +119,9 @@ static Identity getIdFromArg(char *arg)
}
#ifdef __WINDOWS__
int idtool(int argc, _TCHAR* argv[])
static int idtool(int argc, _TCHAR* argv[])
#else
int idtool(int argc,char **argv)
static int idtool(int argc,char **argv)
#endif
{
if (argc < 2) {

264
osdep/Http.cpp Normal file
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@ -0,0 +1,264 @@
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include "Http.hpp"
#include "Phy.hpp"
#include "OSUtils.hpp"
#include "../node/Constants.hpp"
#include "../node/Utils.hpp"
#include "../ext/http-parser/http_parser.h"
namespace ZeroTier {
namespace {
static int ShttpOnMessageBegin(http_parser *parser);
static int ShttpOnUrl(http_parser *parser,const char *ptr,size_t length);
static int ShttpOnStatus(http_parser *parser,const char *ptr,size_t length);
static int ShttpOnHeaderField(http_parser *parser,const char *ptr,size_t length);
static int ShttpOnValue(http_parser *parser,const char *ptr,size_t length);
static int ShttpOnHeadersComplete(http_parser *parser);
static int ShttpOnBody(http_parser *parser,const char *ptr,size_t length);
static int ShttpOnMessageComplete(http_parser *parser);
static const struct http_parser_settings HTTP_PARSER_SETTINGS = {
ShttpOnMessageBegin,
ShttpOnUrl,
ShttpOnStatus,
ShttpOnHeaderField,
ShttpOnValue,
ShttpOnHeadersComplete,
ShttpOnBody,
ShttpOnMessageComplete
};
struct HttpPhyHandler
{
// not used
inline void phyOnDatagram(PhySocket *sock,void **uptr,const struct sockaddr *from,void *data,unsigned long len) {}
inline void phyOnTcpAccept(PhySocket *sockL,PhySocket *sockN,void **uptrL,void **uptrN,const struct sockaddr *from) {}
inline void phyOnTcpConnect(PhySocket *sock,void **uptr,bool success)
{
if (success) {
phy->tcpSetNotifyWritable(sock,true);
} else {
*responseBody = "connection failed";
error = true;
done = true;
}
}
inline void phyOnTcpClose(PhySocket *sock,void **uptr)
{
done = true;
}
inline void phyOnTcpData(PhySocket *sock,void **uptr,void *data,unsigned long len)
{
lastActivity = OSUtils::now();
http_parser_execute(&parser,&HTTP_PARSER_SETTINGS,(const char *)data,len);
if ((parser.upgrade)||(parser.http_errno != HPE_OK))
phy->close(sock);
}
inline void phyOnTcpWritable(PhySocket *sock,void **uptr)
{
if (writePtr < writeSize) {
long n = phy->tcpSend(sock,writeBuf + writePtr,writeSize - writePtr,true);
if (n > 0)
writePtr += n;
}
if (writePtr >= writeSize)
phy->tcpSetNotifyWritable(sock,false);
}
http_parser parser;
std::string currentHeaderField;
std::string currentHeaderValue;
unsigned long messageSize;
unsigned long writePtr;
uint64_t lastActivity;
unsigned long writeSize;
char writeBuf[32768];
unsigned long maxResponseSize;
std::map<std::string,std::string> *responseHeaders;
std::string *responseBody;
bool error;
bool done;
Phy<HttpPhyHandler *> *phy;
PhySocket *sock;
};
static int ShttpOnMessageBegin(http_parser *parser)
{
return 0;
}
static int ShttpOnUrl(http_parser *parser,const char *ptr,size_t length)
{
return 0;
}
static int ShttpOnStatus(http_parser *parser,const char *ptr,size_t length)
{
HttpPhyHandler *hh = reinterpret_cast<HttpPhyHandler *>(parser->data);
hh->messageSize += length;
if (hh->messageSize > hh->maxResponseSize)
return -1;
return 0;
}
static int ShttpOnHeaderField(http_parser *parser,const char *ptr,size_t length)
{
HttpPhyHandler *hh = reinterpret_cast<HttpPhyHandler *>(parser->data);
hh->messageSize += length;
if (hh->messageSize > hh->maxResponseSize)
return -1;
if ((hh->currentHeaderField.length())&&(hh->currentHeaderValue.length())) {
(*hh->responseHeaders)[hh->currentHeaderField] = hh->currentHeaderValue;
hh->currentHeaderField.assign("",0);
hh->currentHeaderValue.assign("",0);
}
for(size_t i=0;i<length;++i)
hh->currentHeaderField.push_back(OSUtils::toLower(ptr[i]));
return 0;
}
static int ShttpOnValue(http_parser *parser,const char *ptr,size_t length)
{
HttpPhyHandler *hh = reinterpret_cast<HttpPhyHandler *>(parser->data);
hh->messageSize += length;
if (hh->messageSize > hh->maxResponseSize)
return -1;
hh->currentHeaderValue.append(ptr,length);
return 0;
}
static int ShttpOnHeadersComplete(http_parser *parser)
{
HttpPhyHandler *hh = reinterpret_cast<HttpPhyHandler *>(parser->data);
if ((hh->currentHeaderField.length())&&(hh->currentHeaderValue.length()))
(*hh->responseHeaders)[hh->currentHeaderField] = hh->currentHeaderValue;
return 0;
}
static int ShttpOnBody(http_parser *parser,const char *ptr,size_t length)
{
HttpPhyHandler *hh = reinterpret_cast<HttpPhyHandler *>(parser->data);
hh->messageSize += length;
if (hh->messageSize > hh->maxResponseSize)
return -1;
hh->responseBody->append(ptr,length);
return 0;
}
static int ShttpOnMessageComplete(http_parser *parser)
{
HttpPhyHandler *hh = reinterpret_cast<HttpPhyHandler *>(parser->data);
hh->phy->close(hh->sock);
return 0;
}
} // anonymous namespace
unsigned int Http::_do(
const char *method,
unsigned long maxResponseSize,
unsigned long timeout,
const struct sockaddr *remoteAddress,
const char *path,
const std::map<std::string,std::string> &requestHeaders,
const void *requestBody,
unsigned long requestBodyLength,
std::map<std::string,std::string> &responseHeaders,
std::string &responseBody)
{
try {
responseHeaders.clear();
responseBody.assign("",0);
HttpPhyHandler handler;
http_parser_init(&(handler.parser),HTTP_RESPONSE);
handler.parser.data = (void *)&handler;
handler.messageSize = 0;
handler.writePtr = 0;
handler.lastActivity = OSUtils::now();
try {
handler.writeSize = Utils::snprintf(handler.writeBuf,sizeof(handler.writeBuf),"GET %s HTTP/1.1\r\n",path);
for(std::map<std::string,std::string>::const_iterator h(requestHeaders.begin());h!=requestHeaders.end();++h)
handler.writeSize += Utils::snprintf(handler.writeBuf + handler.writeSize,sizeof(handler.writeBuf) - handler.writeSize,"%s: %s\r\n",h->first.c_str(),h->second.c_str());
handler.writeSize += Utils::snprintf(handler.writeBuf + handler.writeSize,sizeof(handler.writeBuf) - handler.writeSize,"\r\n");
if ((requestBody)&&(requestBodyLength)) {
if ((handler.writeSize + requestBodyLength) > sizeof(handler.writeBuf)) {
responseBody = "request too large";
return 0;
}
memcpy(handler.writeBuf + handler.writeSize,requestBody,requestBodyLength);
handler.writeSize += requestBodyLength;
}
} catch ( ... ) {
responseBody = "request too large";
return 0;
}
handler.maxResponseSize = maxResponseSize;
handler.responseHeaders = &responseHeaders;
handler.responseBody = &responseBody;
handler.error = false;
handler.done = false;
Phy<HttpPhyHandler *> phy(&handler,true);
bool instantConnect = false;
handler.phy = &phy;
handler.sock = phy.tcpConnect((const struct sockaddr *)remoteAddress,instantConnect,(void *)0,true);
if (!handler.sock) {
responseBody = "connection failed (2)";
return 0;
}
while (!handler.done) {
phy.poll(timeout / 2);
if ((timeout)&&((unsigned long)(OSUtils::now() - handler.lastActivity) > timeout)) {
phy.close(handler.sock);
responseBody = "timed out";
return 0;
}
}
return ((handler.error) ? 0 : ((handler.parser.http_errno != HPE_OK) ? 0 : handler.parser.status_code));
} catch (std::exception &exc) {
responseBody = exc.what();
return 0;
} catch ( ... ) {
responseBody = "unknown exception";
return 0;
}
}
} // namespace ZeroTier

134
osdep/Http.hpp Normal file
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@ -0,0 +1,134 @@
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef ZT_HTTP_HPP
#define ZT_HTTP_HPP
#include <string>
#include <map>
#include <stdexcept>
#if defined(_WIN32) || defined(_WIN64)
#include <WinSock2.h>
#include <WS2tcpip.h>
#include <Windows.h>
#else
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#endif
namespace ZeroTier {
/**
* Simple synchronous HTTP client used for updater and cli
*/
class Http
{
public:
/**
* Make HTTP GET request
*
* The caller must set all headers, including Host.
*
* @return HTTP status code or 0 on error (responseBody will contain error message)
*/
static inline unsigned int GET(
unsigned long maxResponseSize,
unsigned long timeout,
const struct sockaddr *remoteAddress,
const char *path,
const std::map<std::string,std::string> &requestHeaders,
std::map<std::string,std::string> &responseHeaders,
std::string &responseBody)
{
return _do(
"GET",
maxResponseSize,
timeout,
remoteAddress,
path,
requestHeaders,
(const void *)0,
0,
responseHeaders,
responseBody);
}
/**
* Make HTTP POST request
*
* It is the responsibility of the caller to set all headers. With POST, the
* Content-Length and Content-Type headers must be set or the POST will not
* work.
*
* @return HTTP status code or 0 on error (responseBody will contain error message)
*/
static inline unsigned int POST(
unsigned long maxResponseSize,
unsigned long timeout,
const struct sockaddr *remoteAddress,
const char *path,
const std::map<std::string,std::string> &requestHeaders,
const void *postData,
unsigned long postDataLength,
std::map<std::string,std::string> &responseHeaders,
std::string &responseBody)
{
return _do(
"POST",
maxResponseSize,
timeout,
remoteAddress,
path,
requestHeaders,
postData,
postDataLength,
responseHeaders,
responseBody);
}
private:
static unsigned int _do(
const char *method,
unsigned long maxResponseSize,
unsigned long timeout,
const struct sockaddr *remoteAddress,
const char *path,
const std::map<std::string,std::string> &requestHeaders,
const void *requestBody,
unsigned long requestBodyLength,
std::map<std::string,std::string> &responseHeaders,
std::string &responseBody);
};
} // namespace ZeroTier
#endif

3
osdep/OSUtils.cpp
View File

@ -206,4 +206,7 @@ bool OSUtils::writeFile(const char *path,const void *buf,unsigned int len)
return false;
}
// Used to convert HTTP header names to ASCII lower case
const unsigned char OSUtils::TOLOWER_TABLE[256] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, ' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff };
} // namespace ZeroTier

9
osdep/OSUtils.hpp
View File

@ -220,6 +220,15 @@ public:
* @return True if entire file was successfully written
*/
static inline bool writeFile(const char *path,const std::string &s) { return writeFile(path,s.data(),(unsigned int)s.length()); }
/**
* @param c ASCII character to convert
* @return Lower case ASCII character or unchanged if not a letter
*/
static inline char toLower(char c) throw() { return (char)OSUtils::TOLOWER_TABLE[(unsigned long)c]; }
private:
static const unsigned char TOLOWER_TABLE[256];
};
} // namespace ZeroTier

8
osdep/Phy.hpp
View File

@ -443,7 +443,7 @@ public:
#if defined(_WIN32) || defined(_WIN64)
{
BOOL f;
f = TRUE; ::setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(const char *)&f,sizeof(f));
if (remoteAddress->sa_family == AF_INET6) { f = TRUE; ::setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(const char *)&f,sizeof(f)); }
f = TRUE; ::setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(const char *)&f,sizeof(f));
f = (_noDelay ? TRUE : FALSE); setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char *)&f,sizeof(f));
u_long iMode=1;
@ -452,7 +452,7 @@ public:
#else
{
int f;
f = 1; ::setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(void *)&f,sizeof(f));
if (remoteAddress->sa_family == AF_INET6) { f = 1; ::setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(void *)&f,sizeof(f)); }
f = 1; ::setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(void *)&f,sizeof(f));
f = (_noDelay ? 1 : 0); setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char *)&f,sizeof(f));
fcntl(s,F_SETFL,O_NONBLOCK);
@ -621,9 +621,9 @@ public:
case ZT_PHY_SOCKET_TCP_OUT_PENDING:
#if defined(_WIN32) || defined(_WIN64)
if (FD_ISSET(s->sock,&efds))
if (FD_ISSET(s->sock,&efds)) {
this->close((PhySocket *)&(*s),true);
else // ... if
} else // ... if
#endif
if (FD_ISSET(s->sock,&wfds)) {
socklen_t slen = sizeof(ss);

47
selftest.cpp
View File

@ -25,8 +25,6 @@
* LLC. Start here: http://www.zerotier.com/
*/
#define ZT_TEST_PHY
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -55,9 +53,8 @@
#include "node/Node.hpp"
#include "osdep/OSUtils.hpp"
#ifdef ZT_TEST_PHY
#include "osdep/Phy.hpp"
#endif
#include "osdep/Http.hpp"
#ifdef ZT_ENABLE_NETWORK_CONTROLLER
#include "controller/SqliteNetworkController.hpp"
@ -581,7 +578,6 @@ static int testOther()
return 0;
}
#ifdef ZT_TEST_PHY
#define ZT_TEST_PHY_NUM_UDP_PACKETS 10000
#define ZT_TEST_PHY_UDP_PACKET_SIZE 1000
#define ZT_TEST_PHY_NUM_VALID_TCP_CONNECTS 10
@ -641,11 +637,8 @@ struct TestPhyHandlers
}
}
};
#endif // ZT_TEST_PHY
static int testPhy()
{
#ifdef ZT_TEST_PHY
char udpTestPayload[ZT_TEST_PHY_UDP_PACKET_SIZE];
memset(udpTestPayload,0xff,sizeof(udpTestPayload));
@ -720,11 +713,11 @@ static int testPhy()
} else {
std::cout << "got " << phyTestTcpConnectSuccessCount << " connect successes, " << phyTestTcpConnectFailCount << " failures, and " << phyTestTcpByteCount << " bytes, OK" << std::endl;
}
#endif // ZT_TEST_PHY
return 0;
}
static int testSqliteNetconfMaster()
static int testSqliteNetworkController()
{
#ifdef ZT_ENABLE_NETWORK_CONTROLLER
try {
@ -745,6 +738,37 @@ static int testSqliteNetconfMaster()
return 0;
}
static int testHttp()
{
std::map<std::string,std::string> requestHeaders,responseHeaders;
std::string responseBody;
InetAddress downloadZerotierDotCom("142.4.214.72/80");
std::cout << "[http] GET http://download.zerotier.com/dev/1k @" << downloadZerotierDotCom.toString() << " ... "; std::cout.flush();
requestHeaders["Host"] = "download.zerotier.com";
unsigned int sc = Http::GET(1024 * 1024 * 16,60000,reinterpret_cast<const struct sockaddr *>(&downloadZerotierDotCom),"/dev/1k",requestHeaders,responseHeaders,responseBody);
std::cout << sc << " " << responseBody.length() << " bytes ";
if (sc == 0)
std::cout << "ERROR: " << responseBody << std::endl;
else std::cout << "DONE" << std::endl;
std::cout << "[http] GET http://download.zerotier.com/dev/4m @" << downloadZerotierDotCom.toString() << " ... "; std::cout.flush();
requestHeaders["Host"] = "download.zerotier.com";
sc = Http::GET(1024 * 1024 * 16,60000,reinterpret_cast<const struct sockaddr *>(&downloadZerotierDotCom),"/dev/4m",requestHeaders,responseHeaders,responseBody);
std::cout << sc << " " << responseBody.length() << " bytes ";
if (sc == 0)
std::cout << "ERROR: " << responseBody << std::endl;
else std::cout << "DONE" << std::endl;
downloadZerotierDotCom = InetAddress("1.0.0.1/1234");
std::cout << "[http] GET @" << downloadZerotierDotCom.toString() << " ... "; std::cout.flush();
sc = Http::GET(1024 * 1024 * 16,2500,reinterpret_cast<const struct sockaddr *>(&downloadZerotierDotCom),"/dev/4m",requestHeaders,responseHeaders,responseBody);
std::cout << sc << " (should be 0, time out)" << std::endl;
return 0;
}
#ifdef __WINDOWS__
int _tmain(int argc, _TCHAR* argv[])
#else
@ -795,7 +819,8 @@ int main(int argc,char **argv)
srand((unsigned int)time(0));
r |= testPhy();
r |= testSqliteNetconfMaster();
r |= testHttp();
r |= testSqliteNetworkController();
r |= testCrypto();
r |= testPacket();
r |= testOther();

8
service/OneService.cpp
View File

@ -70,9 +70,6 @@ namespace ZeroTier { typedef OSXEthernetTap EthernetTap; }
namespace ZeroTier {
// Used to convert HTTP header names to ASCII lower case
static const unsigned char ZT_TOLOWER_TABLE[256] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, ' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff };
class OneServiceImpl;
static int SnodeVirtualNetworkConfigFunction(ZT1_Node *node,void *uptr,uint64_t nwid,enum ZT1_VirtualNetworkConfigOperation op,const ZT1_VirtualNetworkConfig *nwconf);
@ -92,8 +89,7 @@ static int ShttpOnValue(http_parser *parser,const char *ptr,size_t length);
static int ShttpOnHeadersComplete(http_parser *parser);
static int ShttpOnBody(http_parser *parser,const char *ptr,size_t length);
static int ShttpOnMessageComplete(http_parser *parser);
const struct http_parser_settings HTTP_PARSER_SETTINGS = {
static const struct http_parser_settings HTTP_PARSER_SETTINGS = {
ShttpOnMessageBegin,
ShttpOnUrl,
ShttpOnStatus,
@ -719,7 +715,7 @@ static int ShttpOnHeaderField(http_parser *parser,const char *ptr,size_t length)
htc->currentHeaderValue.assign("",0);
}
for(size_t i=0;i<length;++i)
htc->currentHeaderField.push_back((char)ZT_TOLOWER_TABLE[(unsigned int)ptr[i]]);
htc->currentHeaderField.push_back(OSUtils::toLower(ptr[i]));
return 0;
}
static int ShttpOnValue(http_parser *parser,const char *ptr,size_t length)

590
updater/HttpClient.cpp
View File

@ -1,590 +0,0 @@
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#include "../node/Constants.hpp"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef __WINDOWS__
#include <WinSock2.h>
#include <Windows.h>
#include <winhttp.h>
#include <locale>
#include <codecvt>
#endif // __WINDOWS__
#ifdef __UNIX_LIKE__
#include <unistd.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/select.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/wait.h>
#endif // __UNIX_LIKE__
#include <vector>
#include <utility>
#include <algorithm>
#include "HttpClient.hpp"
#include "Thread.hpp"
#include "OSUtils.hpp"
#include "../node/Utils.hpp"
namespace ZeroTier {
#ifdef __UNIX_LIKE__
// The *nix implementation calls 'curl' externally rather than linking to it.
// This makes it an optional dependency that can be avoided in tiny systems
// provided you don't want to have automatic software updates... or want to
// do them via another method.
#ifdef __APPLE__
// TODO: get proxy configuration
#endif
// Paths where "curl" may be found on the system
#define NUM_CURL_PATHS 6
static const char *CURL_PATHS[NUM_CURL_PATHS] = { "/usr/bin/curl","/bin/curl","/usr/local/bin/curl","/usr/sbin/curl","/sbin/curl","/usr/libexec/curl" };
// Maximum message length
#define CURL_MAX_MESSAGE_LENGTH (1024 * 1024 * 64)
// Internal private thread class that performs request, notifies handler,
// and then commits suicide by deleting itself.
class HttpClient_Private_Request
{
public:
HttpClient_Private_Request(HttpClient *parent,const char *method,const std::string &url,const std::map<std::string,std::string> &headers,unsigned int timeout,void (*handler)(void *,int,const std::string &,const std::string &),void *arg) :
_url(url),
_headers(headers),
_timeout(timeout),
_handler(handler),
_arg(arg),
_parent(parent),
_pid(0),
_cancelled(false)
{
_myThread = Thread::start(this);
}
~HttpClient_Private_Request()
{
Mutex::Lock _l(_parent->_requests_m);
_parent->_requests.erase((HttpClient::Request)this);
}
void threadMain()
{
char *curlArgs[1024];
char buf[16384];
fd_set readfds,writefds,errfds;
struct timeval tv;
std::string curlPath;
for(int i=0;i<NUM_CURL_PATHS;++i) {
if (OSUtils::fileExists(CURL_PATHS[i])) {
curlPath = CURL_PATHS[i];
break;
}
}
if (!curlPath.length()) {
_doH(_arg,-1,_url,"unable to locate 'curl' binary in /usr/bin, /bin, /usr/local/bin, /usr/sbin, or /sbin");
delete this;
return;
}
if (!_url.length()) {
_doH(_arg,-1,_url,"cannot fetch empty URL");
delete this;
return;
}
curlArgs[0] = const_cast <char *>(curlPath.c_str());
curlArgs[1] = const_cast <char *>("-D");
curlArgs[2] = const_cast <char *>("-"); // append headers before output
int argPtr = 3;
std::vector<std::string> headerArgs;
for(std::map<std::string,std::string>::const_iterator h(_headers.begin());h!=_headers.end();++h) {
headerArgs.push_back(h->first);
headerArgs.back().append(": ");
headerArgs.back().append(h->second);
}
for(std::vector<std::string>::iterator h(headerArgs.begin());h!=headerArgs.end();++h) {
if (argPtr >= (1024 - 4)) // leave room for terminating NULL and URL
break;
curlArgs[argPtr++] = const_cast <char *>("-H");
curlArgs[argPtr++] = const_cast <char *>(h->c_str());
}
curlArgs[argPtr++] = const_cast <char *>(_url.c_str());
curlArgs[argPtr] = (char *)0;
if (_cancelled) {
delete this;
return;
}
int curlStdout[2];
int curlStderr[2];
::pipe(curlStdout);
::pipe(curlStderr);
_pid = (long)vfork();
if (_pid < 0) {
// fork() failed
::close(curlStdout[0]);
::close(curlStdout[1]);
::close(curlStderr[0]);
::close(curlStderr[1]);
_doH(_arg,-1,_url,"unable to fork()");
delete this;
return;
} else if (_pid > 0) {
// fork() succeeded, in parent process
::close(curlStdout[1]);
::close(curlStderr[1]);
fcntl(curlStdout[0],F_SETFL,O_NONBLOCK);
fcntl(curlStderr[0],F_SETFL,O_NONBLOCK);
int exitCode = -1;
unsigned long long timesOutAt = OSUtils::now() + ((unsigned long long)_timeout * 1000ULL);
bool timedOut = false;
bool tooLong = false;
while (!_cancelled) {
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_ZERO(&errfds);
FD_SET(curlStdout[0],&readfds);
FD_SET(curlStderr[0],&readfds);
FD_SET(curlStdout[0],&errfds);
FD_SET(curlStderr[0],&errfds);
tv.tv_sec = 1;
tv.tv_usec = 0;
select(std::max(curlStdout[0],curlStderr[0])+1,&readfds,&writefds,&errfds,&tv);
if (FD_ISSET(curlStdout[0],&readfds)) {
int n = (int)::read(curlStdout[0],buf,sizeof(buf));
if (n > 0) {
_body.append(buf,n);
// Reset timeout when data is read...
timesOutAt = OSUtils::now() + ((unsigned long long)_timeout * 1000ULL);
} else if (n < 0)
break;
if (_body.length() > CURL_MAX_MESSAGE_LENGTH) {
tooLong = true;
break;
}
}
if (FD_ISSET(curlStderr[0],&readfds))
::read(curlStderr[0],buf,sizeof(buf));
if (FD_ISSET(curlStdout[0],&errfds)||FD_ISSET(curlStderr[0],&errfds))
break;
if (OSUtils::now() >= timesOutAt) {
timedOut = true;
break;
}
if (waitpid(_pid,&exitCode,WNOHANG) > 0) {
for(;;) {
// Drain output...
int n = (int)::read(curlStdout[0],buf,sizeof(buf));
if (n <= 0)
break;
else {
_body.append(buf,n);
if (_body.length() > CURL_MAX_MESSAGE_LENGTH) {
tooLong = true;
break;
}
}
}
_pid = 0;
break;
}
}
if (_pid > 0) {
::kill(_pid,SIGKILL);
waitpid(_pid,&exitCode,0);
}
_pid = 0;
::close(curlStdout[0]);
::close(curlStderr[0]);
if (timedOut)
_doH(_arg,-1,_url,"connection timed out");
else if (tooLong)
_doH(_arg,-1,_url,"response too long");
else if (exitCode)
_doH(_arg,-1,_url,"connection failed (curl returned non-zero exit code)");
else {
unsigned long idx = 0;
// Grab status line and headers, which will prefix output on
// success and will end with an empty line.
std::vector<std::string> headers;
headers.push_back(std::string());
while (idx < _body.length()) {
char c = _body[idx++];
if (c == '\n') {
if (!headers.back().length()) {
headers.pop_back();
break;
} else headers.push_back(std::string());
} else if (c != '\r')
headers.back().push_back(c);
}
if (headers.empty()||(!headers.front().length())) {
_doH(_arg,-1,_url,"HTTP response empty");
delete this;
return;
}
// Parse first line -- HTTP status code and response
size_t scPos = headers.front().find(' ');
if (scPos == std::string::npos) {
_doH(_arg,-1,_url,"invalid HTTP response (no status line)");
delete this;
return;
}
++scPos;
unsigned int rcode = Utils::strToUInt(headers.front().substr(scPos,3).c_str());
if ((!rcode)||(rcode > 999)) {
_doH(_arg,-1,_url,"invalid HTTP response (invalid response code)");
delete this;
return;
}
// Serve up the resulting data to the handler
if (rcode == 200)
_doH(_arg,rcode,_url,_body.substr(idx));
else if ((scPos + 4) < headers.front().length())
_doH(_arg,rcode,_url,headers.front().substr(scPos+4));
else _doH(_arg,rcode,_url,"(no status message from server)");
}
delete this;
return;
} else {
// fork() succeeded, in child process
::dup2(curlStdout[1],STDOUT_FILENO);
::close(curlStdout[1]);
::dup2(curlStderr[1],STDERR_FILENO);
::close(curlStderr[1]);
::execv(curlPath.c_str(),curlArgs);
::exit(-1); // only reached if execv() fails
}
}
inline void cancel()
{
{
Mutex::Lock _l(_cancelled_m);
_cancelled = true;
if (_pid > 0)
::kill(_pid,SIGKILL);
}
Thread::join(_myThread);
}
private:
inline void _doH(void *arg,int code,const std::string &url,const std::string &body)
{
Mutex::Lock _l(_cancelled_m);
try {
if ((!_cancelled)&&(_handler))
_handler(arg,code,url,body);
} catch ( ... ) {}
}
const std::string _url;
std::string _body;
std::map<std::string,std::string> _headers;
unsigned int _timeout;
void (*_handler)(void *,int,const std::string &,const std::string &);
void *_arg;
HttpClient *_parent;
long _pid;
volatile bool _cancelled;
Mutex _cancelled_m;
Thread _myThread;
};
#endif // __UNIX_LIKE__
#ifdef __WINDOWS__
#define WIN_MAX_MESSAGE_LENGTH (1024 * 1024 * 64)
// Internal private thread class that performs request, notifies handler,
// and then commits suicide by deleting itself.
class HttpClient_Private_Request : NonCopyable
{
public:
HttpClient_Private_Request(HttpClient *parent,const char *method,const std::string &url,const std::map<std::string,std::string> &headers,unsigned int timeout,void (*handler)(void *,int,const std::string &,const std::string &),void *arg) :
_url(url),
_headers(headers),
_timeout(timeout),
_handler(handler),
_arg(arg),
_parent(parent),
_hRequest((HINTERNET)0)
{
_myThread = Thread::start(this);
}
~HttpClient_Private_Request()
{
Mutex::Lock _l(_parent->_requests_m);
_parent->_requests.erase((HttpClient::Request)this);
}
void threadMain()
{
HINTERNET hSession = (HINTERNET)0;
HINTERNET hConnect = (HINTERNET)0;
HINTERNET hRequest = (HINTERNET)0;
try {
hSession = WinHttpOpen(L"ZeroTier One HttpClient/1.0 (WinHttp)",WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,WINHTTP_NO_PROXY_NAME,WINHTTP_NO_PROXY_BYPASS,0);
if (!hSession) {
_handler(_arg,-1,_url,"WinHttpOpen() failed");
goto closeAndReturnFromHttp;
}
int timeoutMs = (int)_timeout * 1000;
WinHttpSetTimeouts(hSession,timeoutMs,timeoutMs,timeoutMs,timeoutMs);
std::wstring_convert< std::codecvt_utf8<wchar_t> > wcconv;
std::wstring wurl(wcconv.from_bytes(_url));
URL_COMPONENTS uc;
memset(&uc,0,sizeof(uc));
uc.dwStructSize = sizeof(uc);
uc.dwSchemeLength = -1;
uc.dwHostNameLength = -1;
uc.dwUrlPathLength = -1;
uc.dwExtraInfoLength = -1;
if (!WinHttpCrackUrl(wurl.c_str(),(DWORD)wurl.length(),0,&uc)) {
_handler(_arg,-1,_url,"unable to parse URL: WinHttpCrackUrl() failed");
goto closeAndReturnFromHttp;
}
if ((!uc.lpszHostName)||(!uc.lpszUrlPath)||(!uc.lpszScheme)||(uc.dwHostNameLength <= 0)||(uc.dwUrlPathLength <= 0)||(uc.dwSchemeLength <= 0)) {
_handler(_arg,-1,_url,"unable to parse URL: missing scheme, host name, or path");
goto closeAndReturnFromHttp;
}
std::wstring urlScheme(uc.lpszScheme,uc.dwSchemeLength);
std::wstring urlHostName(uc.lpszHostName,uc.dwHostNameLength);
std::wstring urlPath(uc.lpszUrlPath,uc.dwUrlPathLength);
if ((uc.lpszExtraInfo)&&(uc.dwExtraInfoLength > 0))
urlPath.append(uc.lpszExtraInfo,uc.dwExtraInfoLength);
if (urlScheme != L"http") {
_handler(_arg,-1,_url,"only 'http' scheme is supported");
goto closeAndReturnFromHttp;
}
hConnect = WinHttpConnect(hSession,urlHostName.c_str(),((uc.nPort > 0) ? uc.nPort : 80),0);
if (!hConnect) {
_handler(_arg,-1,_url,"connection failed");
goto closeAndReturnFromHttp;
}
{
Mutex::Lock _rl(_hRequest_m);
_hRequest = WinHttpOpenRequest(hConnect,L"GET",urlPath.c_str(),NULL,WINHTTP_NO_REFERER,WINHTTP_DEFAULT_ACCEPT_TYPES,0);
if (!_hRequest) {
_handler(_arg,-1,_url,"error sending request (1)");
goto closeAndReturnFromHttp;
}
if (!WinHttpSendRequest(_hRequest,WINHTTP_NO_ADDITIONAL_HEADERS,0,WINHTTP_NO_REQUEST_DATA,0,0,0)) {
_handler(_arg,-1,_url,"error sending request (2)");
goto closeAndReturnFromHttp;
}
hRequest = _hRequest;
}
if (WinHttpReceiveResponse(hRequest,NULL)) {
DWORD dwStatusCode = 0;
DWORD dwTmp = sizeof(dwStatusCode);
WinHttpQueryHeaders(hRequest,WINHTTP_QUERY_STATUS_CODE| WINHTTP_QUERY_FLAG_NUMBER,NULL,&dwStatusCode,&dwTmp,NULL);
DWORD dwSize;
do {
dwSize = 0;
if (!WinHttpQueryDataAvailable(hRequest,&dwSize)) {
_handler(_arg,-1,_url,"receive error (1)");
goto closeAndReturnFromHttp;
}
{
Mutex::Lock _rl(_hRequest_m);
if (!_hRequest) {
_handler(_arg,-1,_url,"request cancelled");
goto closeAndReturnFromHttp;
}
}
char *outBuffer = new char[dwSize];
DWORD dwRead = 0;
if (!WinHttpReadData(hRequest,(LPVOID)outBuffer,dwSize,&dwRead)) {
_handler(_arg,-1,_url,"receive error (2)");
goto closeAndReturnFromHttp;
}
{
Mutex::Lock _rl(_hRequest_m);
if (!_hRequest) {
_handler(_arg,-1,_url,"request cancelled");
goto closeAndReturnFromHttp;
}
_body.append(outBuffer,dwRead);
delete [] outBuffer;
if (_body.length() > WIN_MAX_MESSAGE_LENGTH) {
_handler(_arg,-1,_url,"result too large");
goto closeAndReturnFromHttp;
}
}
} while ((dwSize > 0)&&(_hRequest));
{
Mutex::Lock _rl(_hRequest_m);
if (!_hRequest) {
_handler(_arg,-1,_url,"request cancelled");
goto closeAndReturnFromHttp;
}
_handler(_arg,dwStatusCode,_url,_body);
}
} else {
_handler(_arg,-1,_url,"receive response failed");
}
} catch ( ... ) {
_handler(_arg,-1,_url,"unexpected exception");
}
closeAndReturnFromHttp:
{
Mutex::Lock _rl(_hRequest_m);
if (_hRequest) {
WinHttpCloseHandle(_hRequest);
_hRequest = (HINTERNET)0;
}
}
if (hConnect)
WinHttpCloseHandle(hConnect);
if (hSession)
WinHttpCloseHandle(hSession);
delete this;
return;
}
inline void cancel()
{
Mutex::Lock _rl(_hRequest_m);
if (_hRequest) {
WinHttpCloseHandle(_hRequest);
_hRequest = (HINTERNET)0;
}
}
const std::string _url;
std::string _body;
std::map<std::string,std::string> _headers;
unsigned int _timeout;
void (*_handler)(void *,int,const std::string &,const std::string &);
void *_arg;
HttpClient *_parent;
HINTERNET _hRequest;
Mutex _hRequest_m;
Thread _myThread;
};
#endif // __WINDOWS__
const std::map<std::string,std::string> HttpClient::NO_HEADERS;
HttpClient::HttpClient()
{
}
HttpClient::~HttpClient()
{
std::set<Request> reqs;
{
Mutex::Lock _l(_requests_m);
reqs = _requests;
}
for(std::set<Request>::iterator r(reqs.begin());r!=reqs.end();++r)
this->cancel(*r);
for(;;) {
_requests_m.lock();
if (_requests.empty()) {
_requests_m.unlock();
break;
} else {
_requests_m.unlock();
Thread::sleep(250);
}
}
}
void HttpClient::cancel(HttpClient::Request req)
{
Mutex::Lock _l(_requests_m);
if (_requests.count(req) == 0)
return;
((HttpClient_Private_Request *)req)->cancel();
}
HttpClient::Request HttpClient::_do(
const char *method,
const std::string &url,
const std::map<std::string,std::string> &headers,
unsigned int timeout,
void (*handler)(void *,int,const std::string &,const std::string &),
void *arg)
{
HttpClient::Request r = (HttpClient::Request)(new HttpClient_Private_Request(this,method,url,headers,timeout,handler,arg));
Mutex::Lock _l(_requests_m);
_requests.insert(r);
return r;
}
} // namespace ZeroTier

110
updater/HttpClient.hpp
View File

@ -1,110 +0,0 @@
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef ZT_HTTPCLIENT_HPP
#define ZT_HTTPCLIENT_HPP
#include <string>
#include <map>
#include <set>
#include "../node/Mutex.hpp"
namespace ZeroTier {
class HttpClient_Private_Request;
/**
* HTTP client that does queries in the background
*
* The handler method takes the following arguments: an arbitrary pointer, an
* HTTP response code, the URL queried, whether or not the message body was
* stored on disk, and the message body.
*
* If stored on disk, the body string contains the path and the file must be
* moved or deleted by the receiver when it's done. If an error occurs, the
* response code will be negative and the body will be the error message.
*
* All headers in the returned headers map will have their header names
* converted to lower case, e.g. "content-type".
*
* Currently only the "http" transport is guaranteed to be supported on all
* platforms.
*/
class HttpClient
{
public:
friend class HttpClient_Private_Request;
typedef void * Request;
HttpClient();
~HttpClient();
/**
* Empty map for convenience use
*/
static const std::map<std::string,std::string> NO_HEADERS;
/**
* Request a URL using the GET method
*/
inline Request GET(
const std::string &url,
const std::map<std::string,std::string> &headers,
unsigned int timeout,
void (*handler)(void *,int,const std::string &,const std::string &),
void *arg)
{
return _do("GET",url,headers,timeout,handler,arg);
}
/**
* Cancel a request
*
* If the request is not active, this does nothing. This may take some time
* depending on HTTP implementation. It may also not kill instantly, but
* it will prevent the handler function from ever being called and cause the
* request to die silently when complete.
*/
void cancel(Request req);
private:
Request _do(
const char *method,
const std::string &url,
const std::map<std::string,std::string> &headers,
unsigned int timeout,
void (*handler)(void *,int,const std::string &,const std::string &),
void *arg);
std::set<Request> _requests;
Mutex _requests_m;
};
} // namespace ZeroTier
#endif