X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/c963a109219ed101fa42f501b16f90d7b7b4f3f2..43ac308ea20014761481bc40525496a0bb1d9740:/projects/stargazer/plugins/capture/cap_nf/cap_nf.cpp?ds=sidebyside diff --git a/projects/stargazer/plugins/capture/cap_nf/cap_nf.cpp b/projects/stargazer/plugins/capture/cap_nf/cap_nf.cpp index 0e0204da..817ed715 100644 --- a/projects/stargazer/plugins/capture/cap_nf/cap_nf.cpp +++ b/projects/stargazer/plugins/capture/cap_nf/cap_nf.cpp @@ -27,51 +27,74 @@ $Revision: 1.11 $ $Date: 2010/09/10 06:41:06 $ $Author: faust $ */ -#include -#include -#include -#include -#include -#include -#include -#include +#include "cap_nf.h" + +#include "stg/common.h" +#include "stg/raw_ip_packet.h" +#include "stg/traffcounter.h" #include -#include "common.h" -#include "cap_nf.h" -#include "raw_ip_packet.h" +#include +#include +#include -#include "../../../traffcounter.h" +#include +#include +#include +#include -class CAP_NF_CREATOR +namespace { -public: - CAP_NF_CREATOR() - : nf(new NF_CAP()) - { - }; - ~CAP_NF_CREATOR() - { - delete nf; - }; +struct NF_HEADER { + uint16_t version; // Protocol version + uint16_t count; // Flows count + uint32_t uptime; // System uptime + uint32_t timestamp; // UNIX timestamp + uint32_t nsecs; // Residual nanoseconds + uint32_t flowSeq; // Sequence counter + uint8_t eType; // Engine type + uint8_t eID; // Engine ID + uint16_t sInterval; // Sampling mode and interval +}; + +struct NF_DATA { + uint32_t srcAddr; // Flow source address + uint32_t dstAddr; // Flow destination address + uint32_t nextHop; // IP addres on next hop router + uint16_t inSNMP; // SNMP index of input iface + uint16_t outSNMP; // SNMP index of output iface + uint32_t packets; // Packets in flow + uint32_t octets; // Total number of bytes in flow + uint32_t timeStart; // Uptime on first packet in flow + uint32_t timeFinish;// Uptime on last packet in flow + uint16_t srcPort; // Flow source port + uint16_t dstPort; // Flow destination port + uint8_t pad1; // 1-byte padding + uint8_t TCPFlags; // Cumulative OR of TCP flags + uint8_t proto; // IP protocol type (tcp, udp, etc.) + uint8_t tos; // IP Type of Service (ToS) + uint16_t srcAS; // Source BGP autonomous system number + uint16_t dstAS; // Destination BGP autonomus system number + uint8_t srcMask; // Source address mask in "slash" notation + uint8_t dstMask; // Destination address mask in "slash" notation + uint16_t pad2; // 2-byte padding +}; + +#define BUF_SIZE (sizeof(NF_HEADER) + 30 * sizeof(NF_DATA)) - NF_CAP * GetCapturer() { return nf; }; -private: - NF_CAP * nf; -} cnc; +} -PLUGIN * GetPlugin() +extern "C" STG::Plugin* GetPlugin() { -return cnc.GetCapturer(); + static NF_CAP plugin; + return &plugin; } NF_CAP::NF_CAP() : traffCnt(NULL), - tidTCP(0), - tidUDP(0), runningTCP(false), runningUDP(false), stoppedTCP(true), @@ -79,20 +102,17 @@ NF_CAP::NF_CAP() portT(0), portU(0), sockTCP(-1), - sockUDP(-1) -{ -} - -NF_CAP::~NF_CAP() + sockUDP(-1), + logger(STG::PluginLogger::get("cap_nf")) { } int NF_CAP::ParseSettings() { -std::vector::iterator it; +std::vector::iterator it; for (it = settings.moduleParams.begin(); it != settings.moduleParams.end(); ++it) { - if (it->param == "TCPPort") + if (it->param == "TCPPort" && !it->value.empty()) { if (str2x(it->value[0], portT)) { @@ -102,7 +122,7 @@ for (it = settings.moduleParams.begin(); it != settings.moduleParams.end(); ++it } continue; } - if (it->param == "UDPPort") + if (it->param == "UDPPort" && !it->value.empty()) { if (str2x(it->value[0], portU)) { @@ -131,6 +151,7 @@ if (portU > 0) runningUDP = false; CloseUDP(); errorStr = "Cannot create UDP thread"; + logger("Cannot create UDP thread."); printfd(__FILE__, "Error: Cannot create UDP thread\n"); return -1; } @@ -146,6 +167,7 @@ if (portT > 0) { runningTCP = false; CloseTCP(); + logger("Cannot create TCP thread."); errorStr = "Cannot create TCP thread"; printfd(__FILE__, "Error: Cannot create TCP thread\n"); return -1; @@ -162,7 +184,8 @@ if (portU && !stoppedUDP) CloseUDP(); for (int i = 0; i < 25 && !stoppedUDP; ++i) { - usleep(200000); + struct timespec ts = {0, 200000000}; + nanosleep(&ts, NULL); } if (stoppedUDP) { @@ -173,10 +196,12 @@ if (portU && !stoppedUDP) if (pthread_kill(tidUDP, SIGUSR1)) { errorStr = "Error sending signal to UDP thread"; + logger("Error sending sugnal to UDP thread."); printfd(__FILE__, "Error: Error sending signal to UDP thread\n"); return -1; } printfd(__FILE__, "UDP thread NOT stopped\n"); + logger("Cannot stop UDP thread."); } } if (portT && !stoppedTCP) @@ -184,7 +209,8 @@ if (portT && !stoppedTCP) CloseTCP(); for (int i = 0; i < 25 && !stoppedTCP; ++i) { - usleep(200000); + struct timespec ts = {0, 200000000}; + nanosleep(&ts, NULL); } if (stoppedTCP) { @@ -195,10 +221,12 @@ if (portT && !stoppedTCP) if (pthread_kill(tidTCP, SIGUSR1)) { errorStr = "Error sending signal to TCP thread"; + logger("Error sending signal to TCP thread."); printfd(__FILE__, "Error: Error sending signal to TCP thread\n"); return -1; } printfd(__FILE__, "TCP thread NOT stopped\n"); + logger("Cannot stop TCP thread."); } } return 0; @@ -211,6 +239,7 @@ sockUDP = socket(PF_INET, SOCK_DGRAM, 0); if (sockUDP <= 0) { errorStr = "Error opening UDP socket"; + logger("Cannot create UDP socket: %s", strerror(errno)); printfd(__FILE__, "Error: Error opening UDP socket\n"); return true; } @@ -220,6 +249,7 @@ sin.sin_addr.s_addr = inet_addr("0.0.0.0"); if (bind(sockUDP, (struct sockaddr *)&sin, sizeof(sin))) { errorStr = "Error binding UDP socket"; + logger("Cannot bind UDP socket: %s", strerror(errno)); printfd(__FILE__, "Error: Error binding UDP socket\n"); return true; } @@ -233,6 +263,7 @@ sockTCP = socket(PF_INET, SOCK_STREAM, 0); if (sockTCP <= 0) { errorStr = "Error opening TCP socket"; + logger("Cannot create TCP socket: %s", strerror(errno)); printfd(__FILE__, "Error: Error opening TCP socket\n"); return true; } @@ -242,12 +273,14 @@ sin.sin_addr.s_addr = inet_addr("0.0.0.0"); if (bind(sockTCP, (struct sockaddr *)&sin, sizeof(sin))) { errorStr = "Error binding TCP socket"; + logger("Cannot bind TCP socket: %s", strerror(errno)); printfd(__FILE__, "Error: Error binding TCP socket\n"); return true; } if (listen(sockTCP, 1)) { errorStr = "Error listening on TCP socket"; + logger("Cannot listen on TCP socket: %s", strerror(errno)); printfd(__FILE__, "Error: Error listening TCP socket\n"); return true; } @@ -256,33 +289,38 @@ return false; void * NF_CAP::RunUDP(void * c) { +sigset_t signalSet; +sigfillset(&signalSet); +pthread_sigmask(SIG_BLOCK, &signalSet, NULL); + NF_CAP * cap = static_cast(c); -uint8_t buf[BUF_SIZE]; -int res; -struct sockaddr_in sin; -socklen_t slen; cap->stoppedUDP = false; while (cap->runningUDP) { - if (!cap->WaitPackets(cap->sockUDP)) + if (!WaitPackets(cap->sockUDP)) { continue; } // Data - slen = sizeof(sin); - res = recvfrom(cap->sockUDP, buf, BUF_SIZE, 0, reinterpret_cast(&sin), &slen); + struct sockaddr_in sin; + socklen_t slen = sizeof(sin); + uint8_t buf[BUF_SIZE]; + ssize_t res = recvfrom(cap->sockUDP, buf, BUF_SIZE, 0, reinterpret_cast(&sin), &slen); if (!cap->runningUDP) break; - if (res == 0) // EOF + if (res < 0) { + cap->logger("recvfrom error: %s", strerror(errno)); continue; } + if (res == 0) // EOF + { + continue; + } - // Wrong logic! - // Need to check actual data length and wait all data to receive if (res < 24) { if (errno != EINTR) @@ -301,43 +339,45 @@ return NULL; void * NF_CAP::RunTCP(void * c) { +sigset_t signalSet; +sigfillset(&signalSet); +pthread_sigmask(SIG_BLOCK, &signalSet, NULL); + NF_CAP * cap = static_cast(c); -uint8_t buf[BUF_SIZE]; -int res; -int sd; -struct sockaddr_in sin; -socklen_t slen; cap->stoppedTCP = false; while (cap->runningTCP) { - if (!cap->WaitPackets(cap->sockTCP)) + if (!WaitPackets(cap->sockTCP)) { continue; } // Data - slen = sizeof(sin); - sd = accept(cap->sockTCP, reinterpret_cast(&sin), &slen); + struct sockaddr_in sin; + socklen_t slen = sizeof(sin); + int sd = accept(cap->sockTCP, reinterpret_cast(&sin), &slen); if (!cap->runningTCP) break; if (sd <= 0) { - if (errno != EINTR) - { - cap->errorStr = "Error accepting connection"; - printfd(__FILE__, "Error: Error accepting connection\n"); - } + if (sd < 0) + cap->logger("accept error: %s", strerror(errno)); continue; } - if (!cap->WaitPackets(sd)) + if (!WaitPackets(sd)) { close(sd); continue; } - res = recv(sd, buf, BUF_SIZE, MSG_WAITALL); + uint8_t buf[BUF_SIZE]; + ssize_t res = recv(sd, buf, BUF_SIZE, MSG_WAITALL); + + if (res < 0) + cap->logger("recv error: %s", strerror(errno)); + close(sd); if (!cap->runningTCP) @@ -352,11 +392,6 @@ while (cap->runningTCP) // Need to check actual data length and wait all data to receive if (res < 24) { - if (errno != EINTR) - { - cap->errorStr = "Invalid data received"; - printfd(__FILE__, "Error: Invalid data received through TCP\n"); - } continue; } @@ -366,9 +401,9 @@ cap->stoppedTCP = true; return NULL; } -void NF_CAP::ParseBuffer(uint8_t * buf, int size) +void NF_CAP::ParseBuffer(uint8_t * buf, ssize_t size) { -RAW_PACKET ip; +STG::RawPacket ip; NF_HEADER * hdr = reinterpret_cast(buf); if (htons(hdr->version) != 5) { @@ -392,51 +427,15 @@ for (int i = 0; i < packets; ++i) { NF_DATA * data = reinterpret_cast(buf + 24 + i * 48); - /*ip.pckt[0] = 4 << 4; - ip.pckt[0] |= 5; - ip.pckt[9] = data->proto; + ip.rawPacket.header.ipHeader.ip_v = 4; + ip.rawPacket.header.ipHeader.ip_hl = 5; + ip.rawPacket.header.ipHeader.ip_p = data->proto; ip.dataLen = ntohl(data->octets); - *(uint32_t *)(ip.pckt + 12) = data->srcAddr; - *(uint32_t *)(ip.pckt + 16) = data->dstAddr; - *(uint16_t *)(ip.pckt + 20) = data->srcPort; - *(uint16_t *)(ip.pckt + 22) = data->dstPort;*/ - ip.header.ipHeader.ip_v = 4; - ip.header.ipHeader.ip_hl = 5; - ip.header.ipHeader.ip_p = data->proto; - ip.dataLen = ntohl(data->octets); - ip.header.ipHeader.ip_src.s_addr = data->srcAddr; - ip.header.ipHeader.ip_dst.s_addr = data->dstAddr; - ip.header.sPort = data->srcPort; - ip.header.dPort = data->dstPort; - - traffCnt->Process(ip); - } -} - -bool NF_CAP::WaitPackets(int sd) const -{ -fd_set rfds; -FD_ZERO(&rfds); -FD_SET(sd, &rfds); - -struct timeval tv; -tv.tv_sec = 0; -tv.tv_usec = 500000; + ip.rawPacket.header.ipHeader.ip_src.s_addr = data->srcAddr; + ip.rawPacket.header.ipHeader.ip_dst.s_addr = data->dstAddr; + ip.rawPacket.header.sPort = data->srcPort; + ip.rawPacket.header.dPort = data->dstPort; -int res = select(sd + 1, &rfds, NULL, NULL, &tv); -if (res == -1) // Error - { - if (errno != EINTR) - { - printfd(__FILE__, "Error on select: '%s'\n", strerror(errno)); - } - return false; + traffCnt->process(ip); } - -if (res == 0) // Timeout - { - return false; - } - -return true; }