From 18d93f51ef96af6a6779c3880ff5d06f49467cc4 Mon Sep 17 00:00:00 2001 From: Kozlov Dmitry Date: Mon, 23 Aug 2010 15:23:30 +0400 Subject: implemented base ccp module --- accel-pptpd/CMakeLists.txt | 3 +- accel-pptpd/ppp_ccp.c | 561 ++++++++++++++++++++++++++++++++++++++++++++- accel-pptpd/ppp_ccp.h | 94 ++++++++ accel-pptpd/ppp_ipcp.c | 1 + accel-pptpd/ppp_lcp.c | 1 + 5 files changed, 656 insertions(+), 4 deletions(-) create mode 100644 accel-pptpd/ppp_ccp.h (limited to 'accel-pptpd') diff --git a/accel-pptpd/CMakeLists.txt b/accel-pptpd/CMakeLists.txt index e97d916..bbe59b8 100644 --- a/accel-pptpd/CMakeLists.txt +++ b/accel-pptpd/CMakeLists.txt @@ -21,11 +21,12 @@ ADD_EXECUTABLE(pptpd ppp_auth.c auth_pap.c - ppp_ccp.c ppp_ipcp.c ipcp_opt_ipaddr.c ipcp_opt_dns.c + ppp_ccp.c + pwdb.c ipdb.c ) diff --git a/accel-pptpd/ppp_ccp.c b/accel-pptpd/ppp_ccp.c index 2f3ce4a..0a7246d 100644 --- a/accel-pptpd/ppp_ccp.c +++ b/accel-pptpd/ppp_ccp.c @@ -1,12 +1,567 @@ +#include +#include +#include +#include +#include + +#include "triton/triton.h" + +#include "log.h" + #include "ppp.h" +#include "ppp_ccp.h" -int ccp_start(struct ppp_t *ppp) +struct recv_opt_t { - return 0; + struct list_head entry; + struct ccp_opt_hdr_t *hdr; + int len; + int state; + struct ccp_option_t *lopt; +}; + +static LIST_HEAD(option_handlers); + +static void ccp_layer_up(struct ppp_fsm_t*); +static void ccp_layer_down(struct ppp_fsm_t*); +static void send_conf_req(struct ppp_fsm_t*); +static void send_conf_ack(struct ppp_fsm_t*); +static void send_conf_nak(struct ppp_fsm_t*); +static void send_conf_rej(struct ppp_fsm_t*); +static void ccp_recv(struct ppp_handler_t*); + +static void ccp_options_init(struct ppp_ccp_t *ccp) +{ + struct ccp_option_t *lopt; + struct ccp_option_handler_t *h; + + INIT_LIST_HEAD(&ccp->options); + + list_for_each_entry(h,&option_handlers,entry) + { + lopt=h->init(ccp); + if (lopt) + { + lopt->h=h; + list_add_tail(&lopt->entry,&ccp->options); + ccp->conf_req_len+=lopt->len; + } + } +} + +static void ccp_options_free(struct ppp_ccp_t *ccp) +{ + struct ccp_option_t *lopt; + + while(!list_empty(&ccp->options)) + { + lopt=list_entry(ccp->options.next,typeof(*lopt),entry); + list_del(&lopt->entry); + lopt->h->free(ccp,lopt); + } +} + +static struct ppp_layer_data_t *ccp_layer_init(struct ppp_t *ppp) +{ + struct ppp_ccp_t *ccp=malloc(sizeof(*ccp)); + memset(ccp,0,sizeof(*ccp)); + + log_debug("ccp_layer_init\n"); + + ccp->ppp=ppp; + ccp->fsm.ppp=ppp; + + ccp->hnd.proto=PPP_CCP; + ccp->hnd.recv=ccp_recv; + + ppp_register_unit_handler(ppp,&ccp->hnd); + + ppp_fsm_init(&ccp->fsm); + + ccp->fsm.layer_up=ccp_layer_up; + ccp->fsm.layer_finished=ccp_layer_down; + ccp->fsm.send_conf_req=send_conf_req; + ccp->fsm.send_conf_ack=send_conf_ack; + ccp->fsm.send_conf_nak=send_conf_nak; + ccp->fsm.send_conf_rej=send_conf_rej; + + INIT_LIST_HEAD(&ccp->ropt_list); + + return &ccp->ld; +} + +void ccp_layer_start(struct ppp_layer_data_t *ld) +{ + struct ppp_ccp_t *ccp=container_of(ld,typeof(*ccp),ld); + + log_debug("ccp_layer_start\n"); + + ccp_options_init(ccp); + ppp_fsm_lower_up(&ccp->fsm); + ppp_fsm_open(&ccp->fsm); +} + +void ccp_layer_finish(struct ppp_layer_data_t *ld) +{ + struct ppp_ccp_t *ccp=container_of(ld,typeof(*ccp),ld); + + log_debug("ccp_layer_finish\n"); + + ppp_fsm_lower_down(&ccp->fsm); + + ppp_unregister_handler(ccp->ppp,&ccp->hnd); + ccp_options_free(ccp); + + ppp_layer_finished(ccp->ppp,ld); +} + +void ccp_layer_free(struct ppp_layer_data_t *ld) +{ + struct ppp_ccp_t *ccp=container_of(ld,typeof(*ccp),ld); + + log_debug("ccp_layer_free\n"); + + free(ccp); +} + +static void ccp_layer_up(struct ppp_fsm_t *fsm) +{ + struct ppp_ccp_t *ccp=container_of(fsm,typeof(*ccp),fsm); + log_debug("ccp_layer_started\n"); + ppp_layer_started(ccp->ppp,&ccp->ld); +} + +static void ccp_layer_down(struct ppp_fsm_t *fsm) +{ + struct ppp_ccp_t *ccp=container_of(fsm,typeof(*ccp),fsm); + log_debug("ccp_layer_finished\n"); + ppp_layer_finished(ccp->ppp,&ccp->ld); +} + +static void print_ropt(struct recv_opt_t *ropt) +{ + int i; + uint8_t *ptr=(uint8_t*)ropt->hdr; + + log_debug(" <"); + for(i=0; ilen; i++) + { + log_debug(" %x",ptr[i]); + } + log_debug(" >"); +} + +static void send_conf_req(struct ppp_fsm_t *fsm) +{ + struct ppp_ccp_t *ccp=container_of(fsm,typeof(*ccp),fsm); + uint8_t *buf=malloc(ccp->conf_req_len), *ptr=buf; + struct ccp_hdr_t *ccp_hdr=(struct ccp_hdr_t*)ptr; + struct ccp_option_t *lopt; + int n; + + log_debug("send [CCP ConfReq"); + ccp_hdr->proto=htons(PPP_CCP); + ccp_hdr->code=CONFREQ; + ccp_hdr->id=++ccp->fsm.id; + ccp_hdr->len=0; + log_debug(" id=%x",ccp_hdr->id); + + ptr+=sizeof(*ccp_hdr); + + list_for_each_entry(lopt,&ccp->options,entry) + { + n=lopt->h->send_conf_req(ccp,lopt,ptr); + if (n) + { + log_debug(" "); + lopt->h->print(log_debug,lopt,NULL); + ptr+=n; + } + } + + log_debug("]\n"); + + ccp_hdr->len=htons((ptr-buf)-2); + ppp_unit_send(ccp->ppp,ccp_hdr,ptr-buf); +} + +static void send_conf_ack(struct ppp_fsm_t *fsm) +{ + struct ppp_ccp_t *ccp=container_of(fsm,typeof(*ccp),fsm); + struct ccp_hdr_t *hdr=(struct ccp_hdr_t*)ccp->ppp->unit_buf; + + hdr->code=CONFACK; + log_debug("send [CCP ConfAck id=%x ]\n",ccp->fsm.recv_id); + + ppp_unit_send(ccp->ppp,hdr,ntohs(hdr->len)+2); +} + +static void send_conf_nak(struct ppp_fsm_t *fsm) +{ + struct ppp_ccp_t *ccp=container_of(fsm,typeof(*ccp),fsm); + uint8_t *buf=malloc(ccp->conf_req_len), *ptr=buf; + struct ccp_hdr_t *ccp_hdr=(struct ccp_hdr_t*)ptr; + struct recv_opt_t *ropt; + + log_debug("send [CCP ConfNak id=%x",ccp->fsm.recv_id); + + ccp_hdr->proto=htons(PPP_CCP); + ccp_hdr->code=CONFNAK; + ccp_hdr->id=ccp->fsm.recv_id; + ccp_hdr->len=0; + + ptr+=sizeof(*ccp_hdr); + + list_for_each_entry(ropt,&ccp->ropt_list,entry) + { + if (ropt->state==CCP_OPT_NAK) + { + log_debug(" "); + ropt->lopt->h->print(log_debug,ropt->lopt,NULL); + ptr+=ropt->lopt->h->send_conf_nak(ccp,ropt->lopt,ptr); + } + } + + log_debug("]\n"); + + ccp_hdr->len=htons((ptr-buf)-2); + ppp_unit_send(ccp->ppp,ccp_hdr,ptr-buf); +} + +static void send_conf_rej(struct ppp_fsm_t *fsm) +{ + struct ppp_ccp_t *ccp=container_of(fsm,typeof(*ccp),fsm); + uint8_t *buf=malloc(ccp->ropt_len), *ptr=buf; + struct ccp_hdr_t *ccp_hdr=(struct ccp_hdr_t*)ptr; + struct recv_opt_t *ropt; + + log_debug("send [CCP ConfRej id=%x ",ccp->fsm.recv_id); + + ccp_hdr->proto=htons(PPP_CCP); + ccp_hdr->code=CONFREJ; + ccp_hdr->id=ccp->fsm.recv_id; + ccp_hdr->len=0; + + ptr+=sizeof(*ccp_hdr); + + list_for_each_entry(ropt,&ccp->ropt_list,entry) + { + if (ropt->state==CCP_OPT_REJ) + { + log_debug(" "); + if (ropt->lopt) ropt->lopt->h->print(log_debug,ropt->lopt,(uint8_t*)ropt->hdr); + else print_ropt(ropt); + memcpy(ptr,ropt->hdr,ropt->len); + ptr+=ropt->len; + } + } + + log_debug("]\n"); + + ccp_hdr->len=htons((ptr-buf)-2); + ppp_unit_send(ccp->ppp,ccp_hdr,ptr-buf); +} + +static int ccp_recv_conf_req(struct ppp_ccp_t *ccp,uint8_t *data,int size) +{ + struct ccp_opt_hdr_t *hdr; + struct recv_opt_t *ropt; + struct ccp_option_t *lopt; + int r,ret=1,ack=0; + + ccp->ropt_len=size; + + while(size>0) + { + hdr=(struct ccp_opt_hdr_t *)data; + + ropt=malloc(sizeof(*ropt)); + memset(ropt,0,sizeof(*ropt)); + if (hdr->len>size) ropt->len=size; + else ropt->len=hdr->len; + ropt->hdr=hdr; + ropt->state=CCP_OPT_NONE; + list_add_tail(&ropt->entry,&ccp->ropt_list); + + data+=ropt->len; + size-=ropt->len; + } + + list_for_each_entry(lopt,&ccp->options,entry) + lopt->state=CCP_OPT_NONE; + + log_debug("recv [CCP ConfReq id=%x",ccp->fsm.recv_id); + list_for_each_entry(ropt,&ccp->ropt_list,entry) + { + list_for_each_entry(lopt,&ccp->options,entry) + { + if (lopt->id==ropt->hdr->id) + { + log_debug(" "); + lopt->h->print(log_debug,lopt,(uint8_t*)ropt->hdr); + r=lopt->h->recv_conf_req(ccp,lopt,(uint8_t*)ropt->hdr); + if (ack) + { + lopt->state=CCP_OPT_REJ; + ropt->state=CCP_OPT_REJ; + }else + { + lopt->state=r; + ropt->state=r; + } + ropt->lopt=lopt; + if (rstate==CCP_OPT_ACK || ropt->state==CCP_OPT_NAK) + ack=1; + else if (!ropt->lopt) + { + log_debug(" "); + print_ropt(ropt); + ropt->state=CCP_OPT_REJ; + ret=CCP_OPT_REJ; + } + } + log_debug("]\n"); + + /*list_for_each_entry(lopt,&ccp->options,entry) + { + if (lopt->state==CCP_OPT_NONE) + { + r=lopt->h->recv_conf_req(ccp,lopt,NULL); + lopt->state=r; + if (rropt_list)) + { + ropt=list_entry(ccp->ropt_list.next,typeof(*ropt),entry); + list_del(&ropt->entry); + free(ropt); + } +} + +static int ccp_recv_conf_rej(struct ppp_ccp_t *ccp,uint8_t *data,int size) +{ + struct ccp_opt_hdr_t *hdr; + struct ccp_option_t *lopt; + int res=0; + + log_debug("recv [CCP ConfRej id=%x",ccp->fsm.recv_id); + + if (ccp->fsm.recv_id!=ccp->fsm.id) + { + log_debug(": id mismatch ]\n"); + return 0; + } + + while(size>0) + { + hdr=(struct ccp_opt_hdr_t *)data; + + list_for_each_entry(lopt,&ccp->options,entry) + { + if (lopt->id==hdr->id) + { + if (!lopt->h->recv_conf_rej) + res=-1; + else if (lopt->h->recv_conf_rej(ccp,lopt,data)) + res=-1; + break; + } + } + + data+=hdr->len; + size-=hdr->len; + } + log_debug("]\n"); + return res; } -void ccp_finish(struct ppp_t *ppp) +static int ccp_recv_conf_nak(struct ppp_ccp_t *ccp,uint8_t *data,int size) { + struct ccp_opt_hdr_t *hdr; + struct ccp_option_t *lopt; + int res=0; + log_debug("recv [CCP ConfNak id=%x",ccp->fsm.recv_id); + + if (ccp->fsm.recv_id!=ccp->fsm.id) + { + log_debug(": id mismatch ]\n"); + return 0; + } + + while(size>0) + { + hdr=(struct ccp_opt_hdr_t *)data; + + list_for_each_entry(lopt,&ccp->options,entry) + { + if (lopt->id==hdr->id) + { + log_debug(" "); + lopt->h->print(log_debug,lopt,data); + if (lopt->h->recv_conf_nak(ccp,lopt,data)) + res=-1; + break; + } + } + + data+=hdr->len; + size-=hdr->len; + } + log_debug("]\n"); + return res; } +static int ccp_recv_conf_ack(struct ppp_ccp_t *ccp,uint8_t *data,int size) +{ + struct ccp_opt_hdr_t *hdr; + struct ccp_option_t *lopt; + int res=0; + + log_debug("recv [CCP ConfAck id=%x",ccp->fsm.recv_id); + + if (ccp->fsm.recv_id!=ccp->fsm.id) + { + log_debug(": id mismatch ]\n"); + return 0; + } + + while(size>0) + { + hdr=(struct ccp_opt_hdr_t *)data; + + list_for_each_entry(lopt,&ccp->options,entry) + { + if (lopt->id==hdr->id) + { + log_debug(" "); + lopt->h->print(log_debug,lopt,data); + if (lopt->h->recv_conf_ack) + lopt->h->recv_conf_ack(ccp,lopt,data); + break; + } + } + + data+=hdr->len; + size-=hdr->len; + } + log_debug("]\n"); + return res; +} + +static void ccp_recv(struct ppp_handler_t*h) +{ + struct ccp_hdr_t *hdr; + struct ppp_ccp_t *ccp=container_of(h,typeof(*ccp),hnd); + int r; + char *term_msg; + + if (ccp->ppp->unit_buf_sizeppp->unit_buf; + if (ntohs(hdr->len)fsm.recv_id=hdr->id; + switch(hdr->code) + { + case CONFREQ: + r=ccp_recv_conf_req(ccp,(uint8_t*)(hdr+1),ntohs(hdr->len)-PPP_HDRLEN); + switch(r) + { + case CCP_OPT_ACK: + ppp_fsm_recv_conf_req_ack(&ccp->fsm); + break; + case CCP_OPT_NAK: + ppp_fsm_recv_conf_req_nak(&ccp->fsm); + break; + case CCP_OPT_REJ: + ppp_fsm_recv_conf_req_rej(&ccp->fsm); + break; + } + ccp_free_conf_req(ccp); + if (r==CCP_OPT_FAIL) + ppp_terminate(ccp->ppp); + break; + case CONFACK: + ccp_recv_conf_ack(ccp,(uint8_t*)(hdr+1),ntohs(hdr->len)-PPP_HDRLEN); + ppp_fsm_recv_conf_ack(&ccp->fsm); + break; + case CONFNAK: + ccp_recv_conf_nak(ccp,(uint8_t*)(hdr+1),ntohs(hdr->len)-PPP_HDRLEN); + ppp_fsm_recv_conf_rej(&ccp->fsm); + break; + case CONFREJ: + if (ccp_recv_conf_rej(ccp,(uint8_t*)(hdr+1),ntohs(hdr->len)-PPP_HDRLEN)) + ppp_terminate(ccp->ppp); + else + ppp_fsm_recv_conf_rej(&ccp->fsm); + break; + case TERMREQ: + term_msg=strndup((uint8_t*)(hdr+1),ntohs(hdr->len)); + log_debug("recv [CCP TermReq id=%x \"%s\"]\n",hdr->id,term_msg); + free(term_msg); + ppp_fsm_recv_term_req(&ccp->fsm); + ppp_terminate(ccp->ppp); + break; + case TERMACK: + term_msg=strndup((uint8_t*)(hdr+1),ntohs(hdr->len)); + log_debug("recv [CCP TermAck id=%x \"%s\"]\n",hdr->id,term_msg); + free(term_msg); + ppp_fsm_recv_term_ack(&ccp->fsm); + break; + case CODEREJ: + log_debug("recv [CCP CodeRej id=%x]\n",hdr->id); + ppp_fsm_recv_code_rej_bad(&ccp->fsm); + break; + default: + ppp_fsm_recv_unk(&ccp->fsm); + break; + } +} + +int ccp_option_register(struct ccp_option_handler_t *h) +{ + /*struct ccp_option_drv_t *p; + + list_for_each_entry(p,option_drv_list,entry) + if (p->id==h->id) + return -1;*/ + + list_add_tail(&h->entry,&option_handlers); + + return 0; +} + +static struct ppp_layer_t ccp_layer= +{ + .init=ccp_layer_init, + .start=ccp_layer_start, + .finish=ccp_layer_finish, + .free=ccp_layer_free, +}; + +static void __init ccp_init(void) +{ + ppp_register_layer("ccp",&ccp_layer); +} diff --git a/accel-pptpd/ppp_ccp.h b/accel-pptpd/ppp_ccp.h new file mode 100644 index 0000000..6aca0ab --- /dev/null +++ b/accel-pptpd/ppp_ccp.h @@ -0,0 +1,94 @@ +#ifndef PPP_CCP_H +#define PPP_CCP_H + +#include + +#include "triton/triton.h" +#include "ppp_fsm.h" +/* + * Options. + */ +#define CI_COMP 2 /* IP-Compress-Protocol */ +#define CI_ADDR 3 /* IP-Address */ +#define CI_DNS1 129 /* Primary-DNS-Address */ +#define CI_DNS2 131 /* Secondary-DNS-Address */ + +struct ccp_hdr_t +{ + uint16_t proto; + uint8_t code; + uint8_t id; + uint16_t len; +} __attribute__((packed)); +struct ccp_opt_hdr_t +{ + uint8_t id; + uint8_t len; +} __attribute__((packed)); +struct ccp_opt8_t +{ + struct ccp_opt_hdr_t hdr; + uint8_t val; +} __attribute__((packed)); +struct ccp_opt16_t +{ + struct ccp_opt_hdr_t hdr; + uint16_t val; +} __attribute__((packed)); +struct ccp_opt32_t +{ + struct ccp_opt_hdr_t hdr; + uint32_t val; +} __attribute__((packed)); + +#define CCP_OPT_NONE 0 +#define CCP_OPT_ACK 1 +#define CCP_OPT_NAK -1 +#define CCP_OPT_REJ -2 +#define CCP_OPT_FAIL -3 + +struct ppp_ccp_t; +struct ccp_option_handler_t; + +struct ccp_option_t +{ + struct list_head entry; + int id; + int len; + int state; + struct ccp_option_handler_t *h; +}; + +struct ccp_option_handler_t +{ + struct list_head entry; + struct ccp_option_t* (*init)(struct ppp_ccp_t*); + int (*send_conf_req)(struct ppp_ccp_t*,struct ccp_option_t*,uint8_t*); + int (*send_conf_rej)(struct ppp_ccp_t*,struct ccp_option_t*,uint8_t*); + int (*send_conf_nak)(struct ppp_ccp_t*,struct ccp_option_t*,uint8_t*); + int (*recv_conf_req)(struct ppp_ccp_t*,struct ccp_option_t*,uint8_t*); + int (*recv_conf_rej)(struct ppp_ccp_t*,struct ccp_option_t*,uint8_t*); + int (*recv_conf_nak)(struct ppp_ccp_t*,struct ccp_option_t*,uint8_t*); + int (*recv_conf_ack)(struct ppp_ccp_t*,struct ccp_option_t*,uint8_t*); + void (*free)(struct ppp_ccp_t*,struct ccp_option_t*); + void (*print)(void (*print)(const char *fmt,...), struct ccp_option_t*,uint8_t*); +}; + +struct ppp_ccp_t +{ + struct ppp_layer_data_t ld; + struct ppp_handler_t hnd; + struct ppp_fsm_t fsm; + struct ppp_t *ppp; + struct list_head options; + + struct list_head ropt_list; // last received ConfReq + int ropt_len; + + int conf_req_len; +}; + +int ccp_option_register(struct ccp_option_handler_t *h); + +#endif + diff --git a/accel-pptpd/ppp_ipcp.c b/accel-pptpd/ppp_ipcp.c index 5a37546..fb089a5 100644 --- a/accel-pptpd/ppp_ipcp.c +++ b/accel-pptpd/ppp_ipcp.c @@ -304,6 +304,7 @@ static int ipcp_recv_conf_req(struct ppp_ipcp_t *ipcp,uint8_t *data,int size) ropt->state=r; ropt->lopt=lopt; if (rlopt) diff --git a/accel-pptpd/ppp_lcp.c b/accel-pptpd/ppp_lcp.c index da0034c..b9d0de3 100644 --- a/accel-pptpd/ppp_lcp.c +++ b/accel-pptpd/ppp_lcp.c @@ -300,6 +300,7 @@ static int lcp_recv_conf_req(struct ppp_lcp_t *lcp,uint8_t *data,int size) ropt->state=r; ropt->lopt=lopt; if (rlopt) -- cgit v1.2.3