From 25c375ef21fa0c0d46b6d7a45acd4d613f1fe907 Mon Sep 17 00:00:00 2001 From: darkcoven Date: Fri, 23 Dec 2011 12:00:00 +0100 Subject: [PATCH] Added the possibility to use global broadcast. CLI: free memory from exploded commands. Added stub to implement firmware upgrade in the future. Lib: handle error code on 1 byte instead of 2. Lib: added Doxygen comments for more functions. --- cli/admin.c | 43 +++++++----- cli/com_firmware.c | 6 +- cli/common.c | 1 + lib/ngadmin.h | 171 ++++++++++++++++++++++++++++++++++++++++----- lib/src/lib.h | 8 ++- lib/src/network.c | 35 +++++++--- lib/src/network.h | 2 +- lib/src/ngadmin.c | 50 +++++++++++-- lib/src/protocol.c | 20 +++--- lib/src/protocol.h | 11 ++- wireshark/nsdp.lua | 3 + 11 files changed, 278 insertions(+), 72 deletions(-) diff --git a/cli/admin.c b/cli/admin.c index 9e0aea6..beb40f2 100644 --- a/cli/admin.c +++ b/cli/admin.c @@ -35,10 +35,7 @@ const struct TreeNode* getSubCom (char **com, int n, int *t) { for (next=cur->sub; next->name!=NULL && strcmp(next->name, com[i])!=0; ++next); // sub command not found, exit - if ( next->name==NULL ) { - next=NULL; - break; - } + if ( next->name==NULL ) break; // next command is now the current one cur=next; @@ -101,7 +98,6 @@ char** my_completion (const char *text, int start, int end UNUSED) { int i, n; - memset(com, 0, MAXCOM*sizeof(char*)); line=strdup(rl_line_buffer); line[start]=0; @@ -114,6 +110,10 @@ char** my_completion (const char *text, int start, int end UNUSED) { if ( i]\n", argv[0]); + printf("Usage: %s [-b] [-f] [-g] [-i ]\n", argv[0]); goto end; case 't': @@ -195,7 +200,7 @@ int main (int argc, char **argv) { // set timeout if ( timeout>0.f ) { tv.tv_sec=(int)timeout; - tv.tv_usec=(int)((timeout-(float)tv.tv_sec)*1e6f); + tv.tv_usec=(int)((timeout-(float)tv.tv_sec)*1.e6f); ngadmin_setTimeout(nga, &tv); } @@ -204,6 +209,8 @@ int main (int argc, char **argv) { if ( force && ngadmin_forceInterface(nga)!=ERR_OK ) goto end; + if ( global && ngadmin_useGlobalBroadcast(nga, true)!=ERR_OK ) goto end; + //rl_bind_key('\t', rl_abort); // disable auto completion //rl_bind_key('\t', rl_complete); // enable auto-complete @@ -214,12 +221,16 @@ int main (int argc, char **argv) { while ( cont ) { if ( (line=readline("> "))==NULL ) goto end; - if ( *line!=0 ) add_history(line); trim(line, strlen(line)); n=explode(line, com, MAXCOM); - free(line); - if ( n==0 ) continue; + if ( n==0 ) { + free(line); + continue; + } else { + add_history(line); + free(line); + } cur=getSubCom(com, n, &i); @@ -254,11 +265,9 @@ int main (int argc, char **argv) { } - for (i=0; i\n"); ret=false; + goto end; } if ( (sa=ngadmin_getCurrentSwitch(nga))==NULL ) { @@ -43,7 +45,9 @@ bool do_firmware_upgrade (int nb, const char **com UNUSED, struct ngadmin *nga) goto end; } - printf("not implemented yet\n"); + + i=ngadmin_upgradeFirmware(nga, com[0]); + printErrCode(i); end: diff --git a/cli/common.c b/cli/common.c index 0911a1a..dec8cc5 100644 --- a/cli/common.c +++ b/cli/common.c @@ -18,6 +18,7 @@ void printErrCode (int err) { case ERR_BADID: printf("bad switch id\n"); break; case ERR_INVARG: printf("invalid argument\n"); break; case ERR_TIMEOUT: printf("timeout\n"); break; + case ERR_NOTIMPL: printf("not implemented\n"); break; default: printf("unknown status code (%i)\n", err); } diff --git a/lib/ngadmin.h b/lib/ngadmin.h index 41d287e..f806a71 100644 --- a/lib/ngadmin.h +++ b/lib/ngadmin.h @@ -253,15 +253,15 @@ int ngadmin_close (struct ngadmin *nga) EXPORT; /** * Force the use of the interface. * This function allows to solve two problems: - * - When you have multiple network interfaces, sending to the broadcast may not - * send the packet on the interface you want. \n + * - When you have multiple network interfaces, sending to the global broadcast + * address may not send the packet on the interface you want. \n * This function forces the packet to go on the interface you specified at * the library initialization. * - When the switch is not in your network range, because DHCP is disabled or * you started the DHCP server after the switch. \n * This function allows you to ignore the routing table and consider every * address is directly reachable on the interface. \n - * An alternative is to use ngadmin_setKeepBroadcasting. + * An alternative is to use ngadmin_setKeepBroadcasting, or simply add a route. * * @warning Requires root priviledges. * @see ngadmin_setKeepBroadcasting() @@ -292,6 +292,20 @@ int ngadmin_forceInterface (struct ngadmin *nga) EXPORT; int ngadmin_setKeepBroadcasting (struct ngadmin *nga, bool value) EXPORT; +/** + * Use global broadcast address. + * By default, NgAdmin uses the interface broadcast address. + * This option forces the lib to use the global broadcast address + * (255.255.255.255) instead. + * @warning If you have multiple interfaces, enabling this may cause problems. + * @see ngadmin_forceInterface() + * @param nga A pointer to the ngadmin structure. + * @param value Enable or disable the use of the global broadcast address. + * @return ERR_OK when everything is well or an error code otherwise. + **/ +int ngadmin_useGlobalBroadcast (struct ngadmin *nga, bool value) EXPORT; + + /** * Specify the password to use to login. * Sets the password to use to login on switches. @@ -343,6 +357,19 @@ const struct swi_attr* ngadmin_getSwitchTab (struct ngadmin *nga, int *nb) EXPOR const struct swi_attr* ngadmin_getCurrentSwitch (struct ngadmin *nga) EXPORT; + +/** + * Upgrade the switch firmware. + * This function allows you to upgrade the switch firmware. + * @warning Currently not implemented. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param filename A path to the file of the new firmware to send. + * @return ERR_NOTIMPL + **/ +int ngadmin_upgradeFirmware (struct ngadmin *nga, const char *filename) EXPORT; + + /** * Login on a switch. * This function permits to login on a switch. @@ -373,7 +400,7 @@ int ngadmin_getPortsStatus (struct ngadmin *nga, unsigned char *ports) EXPORT; * This changes the name of a switch. * @note You must be logged on a switch. * @param nga A pointer to the ngadmin structure. - * @param name The name string to use. + * @param name The name string to use. A NULL value clears the name. * @return ERR_OK when everything is well or an error code otherwise. **/ int ngadmin_setName (struct ngadmin *nga, const char *name) EXPORT; @@ -485,7 +512,7 @@ int ngadmin_setBitrateLimits (struct ngadmin *nga, const int *ports) EXPORT; /** * Get the QoS mode. - * Retrieve the QoS mode. + * Retrieves the QoS mode. * @note You must be logged on a switch. * @param nga A pointer to the ngadmin structure. * @param s A pointer to an integer. Must not be NULL. @@ -507,7 +534,7 @@ int ngadmin_setQOSMode (struct ngadmin *nga, int s) EXPORT; /** * Get the QoS values. - * Retrieve the QoS priority values for all the ports. + * Retrieves the QoS priority values for all the ports. * @note You must be logged on a switch. * @note The switch QoS mode should be port based to use this function. * @param nga A pointer to the ngadmin structure. @@ -559,6 +586,7 @@ int ngadmin_defaults (struct ngadmin *nga) EXPORT; * Get the port mirroring values. * Retrieves the port mirrorring values. * @note The switch QoS mode should be port based to use this function. + * @note You must be logged on a switch. * @param nga A pointer to the ngadmin structure. * @param ports A pointer to an array of chars. Must not be NULL. \n The first element of the array is the output port (or 0 if port @@ -583,51 +611,158 @@ int ngadmin_getMirror (struct ngadmin *nga, char *ports) EXPORT; int ngadmin_setMirror (struct ngadmin *nga, const char *ports) EXPORT; -// +/** + * Get the IGMP configuration. + * Retrieves the IGMP & multicast configuration. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param ic A pointer to an igmp_conf structure. Must not be NULL. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_getIGMPConf (struct ngadmin *nga, struct igmp_conf *ic) EXPORT; -// +/** + * Set the IGMP configuration. + * Changes the IGMP configuration. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param ic A pointer to an igmp_conf structure. Must not be NULL. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_setIGMPConf (struct ngadmin *nga, const struct igmp_conf *ic) EXPORT; -// +/** + * Perform a cable test. + * Performs a cable test on one ore more ports. + * @note Results are still raw values. + * @note This function takes a very long time. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param ct A pointer to an array of cabletest structures. Must not be NULL. + * @param nb The number of elements in the array. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_cabletest (struct ngadmin *nga, struct cabletest *ct, int nb) EXPORT; -// +/** + * Set the network configuration. + * Changes the network configuration. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param nc A pointer to a net_conf structure. Must not be NULL. \n + Only non-zero fields of the structure are taken into account. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_setNetConf (struct ngadmin *nga, const struct net_conf *nc) EXPORT; -// +/** + * Get the VLAN type. + * Retrieves the VLAN type. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param t A pointer to an integer which will receive the VLAN type. Must not be NULL. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_getVLANType (struct ngadmin *nga, int *t) EXPORT; -// +/** + * Set the VLAN type. + * Changes the VLAN type. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param t An integer which contains the new VLAN type. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_setVLANType (struct ngadmin *nga, int t) EXPORT; -// +/** + * Get all the 802.1q VLAN configuration. + * Retrieves all the VLAN configuration in 802.1q mode. + * @note The switch should be in 802.1q mode. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param vlans A pointer to an array of unsigned shorts which will receive + * VLAN ids. Must not be NULL. \n + * The array size must be sizeof(unsigned short)*(*nb). + * @param ports A pointer to an array of unsigned chars which will receive the + 802.1q configuration for each VLAN. Must not be NULL. \n + The array size must be sizeof(unsigned char)*ports_count*(*nb). + * @param nb A pointer to an integer which contains the maximum number of + elements allowed in the array. Must not be NULL. \n + It will receive the actual number of VLAN written in the arrays. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_getVLANDotAllConf (struct ngadmin *nga, unsigned short *vlans, unsigned char *ports, int *nb) EXPORT; -// +/** + * Get the configuration of a VLAN in 802.1q mode. + * Retrieves the configuration of a particular VLAN in 802.1q mode. + * @note The switch should be in 802.1q mode. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param vlan The VLAN you want to get the configuration. + * @param ports A pointer to an array of integers which will receive the + configuration. Must not be NULL. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_getVLANDotConf (struct ngadmin *nga, unsigned short vlan, unsigned char *ports) EXPORT; -// +/** + * Set the configuration if a VLAN in 802.1q mode. + * Changes the configuration of a particular VLAN in 802.1q mode. + * @note The switch should be in 802.1q mode. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param vlan The VLAN you want to change the configuration. + * @param ports A pointer to an array of integers which contain the + configuration. Must not be NULL. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_setVLANDotConf (struct ngadmin *nga, unsigned short vlan, const unsigned char *ports) EXPORT; -// +/** + * Destroy a VLAN in 802.1q mode. + * Destroys a particular VLAN in 802.1q mode. + * @note The switch should be in 802.1q mode. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param vlan The VLAN you want to destroy. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_VLANDestroy (struct ngadmin *nga, unsigned short vlan) EXPORT; -// +/** + * Get the PVID values. + * Retrieves the PVID values of all the ports. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param ports A pointer to an array of unsigned shorts which will receive the + * PVID values. Must not be NULL. \n + * The array size must be sizeof(unsigned short)*ports_count. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_getAllPVID (struct ngadmin *nga, unsigned short *ports) EXPORT; -// +/** + * Set the PVID of one port. + * Changes the PVID of one port. + * @note You must be logged on a switch. + * @param nga A pointer to the ngadmin structure. + * @param port The port you want to change PVID. + * @param vlan The new PVID value. + * @return ERR_OK when everything is well or an error code otherwise. + **/ int ngadmin_setPVID (struct ngadmin *nga, unsigned char port, unsigned short vlan) EXPORT; diff --git a/lib/src/lib.h b/lib/src/lib.h index 3d499b3..610b80e 100644 --- a/lib/src/lib.h +++ b/lib/src/lib.h @@ -62,11 +62,11 @@ #define ATTR_STORM_BITRATE 0x5800 #define ATTR_MIRROR 0x5C00 #define ATTR_PORTS_COUNT 0x6000 -#define ATTR_UNK_6400 0x6400 +#define ATTR_MAX_VLAN 0x6400 #define ATTR_IGMP_ENABLE_VLAN 0x6800 #define ATTR_IGMP_BLOCK_UNK 0x6C00 #define ATTR_IGMP_VALID_V3 0x7000 -#define ATTR_UNK_7400 0x7400 +#define ATTR_TLV_BITMAP 0x7400 #define ATTR_END 0xFFFF @@ -74,11 +74,13 @@ struct ngadmin { // network int sock; // socket - struct sockaddr_in local; + struct sockaddr_in local; // local address & port + struct in_addr brd; // broadcast address char iface[IFNAMSIZ]; // interface struct timeval timeout; // timeout struct ether_addr localmac; // local MAC address bool keepbroad; // keep broadcasting + bool globalbroad; // use global broadcast address (255.255.255.255) // char password[PASSWORD_MAX]; // password to use to login on switches struct swi_attr *swi_tab; // array of detected switches diff --git a/lib/src/network.c b/lib/src/network.c index 77012ea..d548b58 100644 --- a/lib/src/network.c +++ b/lib/src/network.c @@ -23,12 +23,14 @@ int startNetwork (struct ngadmin *nga) { return nga->sock; } + /* // get the interface IP address if ( (ret=ioctl(nga->sock, SIOCGIFADDR, &ifr))<0 ) { perror("ioctl(SIOCGIFADDR)"); close(nga->sock); return ret; } + */ /* Here we have a problem: when you have multiple interfaces, sending a packet to 255.255.255.255 may not send it to the interface you want. If you bind() to @@ -38,6 +40,14 @@ int startNetwork (struct ngadmin *nga) { */ //local.sin_addr=(*(struct sockaddr_in*)&ifr.ifr_addr).sin_addr; // FIXME + // get the interface broadcast address + if ( (ret=ioctl(nga->sock, SIOCGIFBRDADDR, &ifr))<0 ) { + perror("ioctl(SIOCGIFBRDADDR)"); + close(nga->sock); + return ret; + } + nga->brd=(*(struct sockaddr_in*)&ifr.ifr_addr).sin_addr; + // get the interface MAC address if ( (ret=ioctl(nga->sock, SIOCGIFHWADDR, &ifr))<0 ) { perror("ioctl(SIOCGIFHWADDR)"); @@ -149,10 +159,11 @@ int sendNgPacket (struct ngadmin *nga, char code, const List *attr) { + np.buffer=buffer; np.maxlen=sizeof(buffer); initNgPacket(&np); - initNgHeader(np.nh, code, &nga->localmac, sa==NULL ? &nullMac : &sa->mac , ++nga->seq); + initNgHeader(np.nh, code, &nga->localmac, sa==NULL ? NULL : &sa->mac , ++nga->seq); if ( attr!=NULL ) { for (ln=attr->first; ln!=NULL; ln=ln->next) { @@ -163,9 +174,13 @@ int sendNgPacket (struct ngadmin *nga, char code, const List *attr) { memset(&remote, 0, sizeof(struct sockaddr_in)); remote.sin_family=AF_INET; - remote.sin_addr.s_addr= sa==NULL || nga->keepbroad ? htonl(INADDR_BROADCAST) : sa->nc.ip.s_addr ; remote.sin_port=htons(SWITCH_PORT); + if ( sa!=NULL && !nga->keepbroad ) remote.sin_addr=sa->nc.ip; + else if ( nga->globalbroad ) remote.sin_addr.s_addr=htonl(INADDR_BROADCAST); + else remote.sin_addr=nga->brd; + + if ( (ret=sendto(nga->sock, buffer, getPacketTotalSize(&np), 0, (struct sockaddr*)&remote, sizeof(struct sockaddr_in)))<0 ) { perror("sendto"); } @@ -177,8 +192,8 @@ int sendNgPacket (struct ngadmin *nga, char code, const List *attr) { -// ------------------------------------------------------------------------------------------------------------- -int recvNgPacket (struct ngadmin *nga, char code, unsigned short *error, unsigned short *attr_error, List *attr) { +// ------------------------------------------------------------------------------------------------------------ +int recvNgPacket (struct ngadmin *nga, char code, unsigned char *error, unsigned short *attr_error, List *attr) { char buffer[1500]; struct ng_packet np; @@ -218,14 +233,14 @@ int recvNgPacket (struct ngadmin *nga, char code, unsigned short *error, unsigne -int checkErrorCode (unsigned short err, unsigned short attr_error) { +int checkErrorCode (unsigned char err, unsigned short attr_error) { - if ( err==0x0700 && attr_error==ATTR_PASSWORD ) { + if ( err==ERROR_INVALID_PASSWORD && attr_error==ATTR_PASSWORD ) { return ERR_BADPASS; } - if ( err==0x0500 ) { + if ( err==ERROR_INVALID_VALUE ) { return ERR_INVARG; } @@ -240,7 +255,8 @@ int checkErrorCode (unsigned short err, unsigned short attr_error) { int readRequest (struct ngadmin *nga, List *attr) { int i, ret=ERR_OK; - unsigned short err, attr_error; + unsigned char err; + unsigned short attr_error; if ( nga==NULL ) { @@ -278,7 +294,8 @@ int readRequest (struct ngadmin *nga, List *attr) { int writeRequest (struct ngadmin *nga, List *attr) { int i, ret=ERR_OK; - unsigned short err, attr_error; + unsigned char err; + unsigned short attr_error; if ( nga==NULL ) { diff --git a/lib/src/network.h b/lib/src/network.h index 42a142c..6ed3cde 100644 --- a/lib/src/network.h +++ b/lib/src/network.h @@ -33,7 +33,7 @@ int updateTimeout (struct ngadmin *nga); int sendNgPacket (struct ngadmin *nga, char code, const List *attr); // -int recvNgPacket (struct ngadmin *nga, char code, unsigned short *error, unsigned short *attr_error, List *attr); +int recvNgPacket (struct ngadmin *nga, char code, unsigned char *error, unsigned short *attr_error, List *attr); // int readRequest (struct ngadmin *nga, List *attr); diff --git a/lib/src/ngadmin.c b/lib/src/ngadmin.c index 2cbb97e..6473465 100644 --- a/lib/src/ngadmin.c +++ b/lib/src/ngadmin.c @@ -94,6 +94,24 @@ int ngadmin_setKeepBroadcasting (struct ngadmin *nga, bool value) { +// ------------------------------------------------------------- +int ngadmin_useGlobalBroadcast (struct ngadmin *nga, bool value) { + + + if ( nga==NULL ) { + return ERR_INVARG; + } + + + nga->globalbroad=value; + + + return ERR_OK; + +} + + + // ------------------------------------------------------------ int ngadmin_setPassword (struct ngadmin *nga, const char *pass) { @@ -270,7 +288,7 @@ int ngadmin_login (struct ngadmin *nga, int id) { pushBackList(attr, newAttr(ATTR_PASSWORD, strlen(nga->password), strdup(nga->password))); if ( (ret=readRequest(nga, attr))==ERR_OK ) { // login succeeded - // TODO: if keep broadcasting is disabled, connect() the UDP socket so icmp errors messages (port unreachable, TTL exceeded in transit, ...)can be received + // TODO: if keep broadcasting is disabled, connect() the UDP socket so icmp errors messages (port unreachable, TTL exceeded in transit, ...) can be received } else { // login failed nga->current=NULL; @@ -285,6 +303,30 @@ int ngadmin_login (struct ngadmin *nga, int id) { +// -------------------------------------------------------------------- +int ngadmin_upgradeFirmware (struct ngadmin *nga, const char *filename) { + + + if ( nga==NULL || filename==NULL || *filename==0 ) { + return ERR_INVARG; + } else if ( nga->current==NULL ) { + return ERR_NOTLOG; + } + + + /* + Firmware upgrade is not yet implemented. + This would require much more work and the use of a TFTP client. + Overall, it could be quite dangerous, as the switch may not check the binary + content sent to it. + */ + + return ERR_NOTIMPL; + +} + + + // ------------------------------------------------------------------- int ngadmin_getPortsStatus (struct ngadmin *nga, unsigned char *ports) { @@ -1272,7 +1314,6 @@ int ngadmin_getVLANDotAllConf (struct ngadmin *nga, unsigned short *vlans, unsig for (ln=attr->first; ln!=NULL; ln=ln->next) { at=ln->data; p=at->data; - if ( *nb>=total ) break; // no more room if ( at->attr==ATTR_VLAN_DOT_CONF && at->size>=4 ) { for (i=0; iports; ++i) { if ( (p[3]>>(7-i))&1 ) ports[i]=VLAN_TAGGED; // tagged @@ -1281,7 +1322,7 @@ int ngadmin_getVLANDotAllConf (struct ngadmin *nga, unsigned short *vlans, unsig } *vlans++=ntohs(*(unsigned short*)p); ports+=sa->ports; - ++*nb; + if ( ++*nb>total ) break; // no more room } } @@ -1375,7 +1416,6 @@ int ngadmin_setVLANDotConf (struct ngadmin *nga, unsigned short vlan, const unsi // if all is to be changed, we do not need to read old config if ( memchr(ports, VLAN_UNSPEC, sa->ports)!=NULL ) { - attr=createEmptyList(); pushBackList(attr, newShortAttr(ATTR_VLAN_DOT_CONF, vlan)); if ( (ret=readRequest(nga, attr))!=ERR_OK ) { goto end; @@ -1521,7 +1561,7 @@ int ngadmin_setPVID (struct ngadmin *nga, unsigned char port, unsigned short vla pushBackList(attr, newAttr(ATTR_VLAN_PVID, 3, p)); - return writeRequest(nga, attr);; + return writeRequest(nga, attr); } diff --git a/lib/src/protocol.c b/lib/src/protocol.c index 61dd6fa..5f99da2 100644 --- a/lib/src/protocol.c +++ b/lib/src/protocol.c @@ -4,12 +4,6 @@ - -const struct ether_addr nullMac={.ether_addr_octet={0, 0, 0, 0, 0, 0}}; - - - - // ---------------------------- int trim (char *txt, int start) { @@ -43,7 +37,7 @@ void initNgHeader (struct ng_header *nh, char code, const struct ether_addr *cli memset(nh, 0, sizeof(struct ng_header)); - nh->unk1=1; + nh->version=1; nh->code=code; memcpy(nh->client_mac, client_mac, ETH_ALEN); @@ -64,7 +58,7 @@ void initNgHeader (struct ng_header *nh, char code, const struct ether_addr *cli bool validateNgHeader (const struct ng_header *nh, char code, const struct ether_addr *client_mac, const struct ether_addr *switch_mac, unsigned int seqnum) { - if ( nh->unk1!=1 ) { + if ( nh->version!=1 ) { return false; } @@ -72,6 +66,10 @@ bool validateNgHeader (const struct ng_header *nh, char code, const struct ether return false; } + if ( nh->unk1!=0 ) { + return false; + } + if ( *(unsigned short*)nh->unk2!=0 ) { return false; } @@ -257,13 +255,13 @@ void freeAttr (struct attr *at) { -// --------------------------------------------------------------------------------------------------------------- -void extractPacketAttributes (struct ng_packet *np, unsigned short *error, unsigned short *attr_error, List *attr) { +// -------------------------------------------------------------------------------------------------------------- +void extractPacketAttributes (struct ng_packet *np, unsigned char *error, unsigned short *attr_error, List *attr) { struct attr *at; - if ( error!=NULL ) *error=ntohs(np->nh->error); + if ( error!=NULL ) *error=np->nh->error; if ( attr_error!=NULL ) *attr_error=ntohs(np->nh->attr); while ( getPacketTotalSize(np)maxlen ) { diff --git a/lib/src/protocol.h b/lib/src/protocol.h index f535aba..24fbbfe 100644 --- a/lib/src/protocol.h +++ b/lib/src/protocol.h @@ -18,9 +18,10 @@ struct ng_header { - char unk1; // always 1, maybe version + char version; // always 1, maybe version char code; // request code: read request, read reply, write request, write reply - unsigned short error; // error code, 0 when no error + unsigned char error; // error code, 0 when no error + unsigned char unk1; // always 0, unknown unsigned short attr; // attribute code which caused error, 0 when no error char unk2[2]; // always 0, unknown char client_mac[ETH_ALEN]; // client MAC address @@ -56,10 +57,6 @@ struct attr { -extern const struct ether_addr nullMac; - - - // int trim (char *txt, int start); @@ -113,7 +110,7 @@ struct attr* newAddrAttr (unsigned short attr, struct in_addr value); void freeAttr (struct attr *at); // -void extractPacketAttributes (struct ng_packet *np, unsigned short *error, unsigned short *attr_error, List *attr); +void extractPacketAttributes (struct ng_packet *np, unsigned char *error, unsigned short *attr_error, List *attr); // void extractSwitchAttributes (struct swi_attr *sa, const List *l); diff --git a/wireshark/nsdp.lua b/wireshark/nsdp.lua index 30b28d2..f67f5f1 100644 --- a/wireshark/nsdp.lua +++ b/wireshark/nsdp.lua @@ -34,6 +34,7 @@ local error_codes={ local status_codes={ [0]="down", + [1]="10M", [4]="100M", [5]="1000M" } @@ -246,9 +247,11 @@ local attributes={ [0x5800]={name="Broadcast Filtering Bitrate", dissect=dissect_bitrate}, [0x5C00]={name="Mirror", dissect=dissect_mirror}, [0x6000]={name="Ports Count", dissect="uint"}, + [0x6400]={name="Max 802.1Q VLAN Group", dissect=nil}, [0x6800]={name="IGMP Enable & VLAN", dissect=dissect_igmp_enablevlan}, [0x6C00]={name="Block Unknown IGMP Addresses", dissect="uint"}, [0x7000]={name="Validate IGMPv3 Headers", dissect="uint"}, + [0x7400]={name="TLV Bitmap", dissect=nil}, [0xFFFF]={name="End", dissect=nil} } -- 2.39.2