diff options
Diffstat (limited to 'accel-pppd/ppp/ipcp_opt_dns.c')
| -rw-r--r-- | accel-pppd/ppp/ipcp_opt_dns.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/accel-pppd/ppp/ipcp_opt_dns.c b/accel-pppd/ppp/ipcp_opt_dns.c new file mode 100644 index 00000000..c1770922 --- /dev/null +++ b/accel-pppd/ppp/ipcp_opt_dns.c @@ -0,0 +1,155 @@ +#include <stdlib.h> +#include <string.h> +#include <arpa/inet.h> + +#include "ppp.h" +#include "ppp_ipcp.h" +#include "log.h" +#include "ipdb.h" + +#include "memdebug.h" + +static in_addr_t conf_dns1; +static in_addr_t conf_dns2; + +static struct ipcp_option_t *dns1_init(struct ppp_ipcp_t *ipcp); +static struct ipcp_option_t *dns2_init(struct ppp_ipcp_t *ipcp); +static void dns_free(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt); +static int dns_send_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr); +static int dns_send_conf_nak(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr); +static int dns_recv_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr); +static void dns1_print(void (*print)(const char *fmt,...),struct ipcp_option_t*, uint8_t *ptr); +static void dns2_print(void (*print)(const char *fmt,...),struct ipcp_option_t*, uint8_t *ptr); + +struct dns_option_t +{ + struct ipcp_option_t opt; + in_addr_t addr; +}; + +static struct ipcp_option_handler_t dns1_opt_hnd= +{ + .init=dns1_init, + .send_conf_req=dns_send_conf_req, + .send_conf_nak=dns_send_conf_nak, + .recv_conf_req=dns_recv_conf_req, + .free=dns_free, + .print=dns1_print, +}; +static struct ipcp_option_handler_t dns2_opt_hnd= +{ + .init=dns2_init, + .send_conf_req=dns_send_conf_req, + .send_conf_nak=dns_send_conf_nak, + .recv_conf_req=dns_recv_conf_req, + .free=dns_free, + .print=dns2_print, +}; + +static struct ipcp_option_t *dns1_init(struct ppp_ipcp_t *ipcp) +{ + struct dns_option_t *dns_opt=_malloc(sizeof(*dns_opt)); + memset(dns_opt,0,sizeof(*dns_opt)); + dns_opt->opt.id=CI_DNS1; + dns_opt->opt.len=6; + + return &dns_opt->opt; +} + +static struct ipcp_option_t *dns2_init(struct ppp_ipcp_t *ipcp) +{ + struct dns_option_t *dns_opt=_malloc(sizeof(*dns_opt)); + memset(dns_opt,0,sizeof(*dns_opt)); + dns_opt->opt.id=CI_DNS2; + dns_opt->opt.len=6; + + return &dns_opt->opt; +} + +static void dns_free(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt) +{ + struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt); + + _free(dns_opt); +} + +static int dns_send_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr) +{ + return 0; +} + +static int dns_send_conf_nak(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr) +{ + struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt); + struct ipcp_opt32_t *opt32=(struct ipcp_opt32_t*)ptr; + opt32->hdr.id=dns_opt->opt.id; + opt32->hdr.len=6; + opt32->val=dns_opt->addr; + return 6; +} + +static int dns_recv_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr) +{ + struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt); + struct ipcp_opt32_t *opt32=(struct ipcp_opt32_t*)ptr; + + if (opt32->hdr.len != 6) + return IPCP_OPT_REJ; + + if (!dns_opt->addr) + { + if (dns_opt->opt.id == CI_DNS1 && conf_dns1) dns_opt->addr=conf_dns1; + else if (dns_opt->opt.id == CI_DNS2 && conf_dns2) dns_opt->addr=conf_dns2; + + if (!dns_opt->addr) + { + dns_opt->addr=opt32->val; + return IPCP_OPT_ACK; + } + } + + if (dns_opt->addr==opt32->val) + return IPCP_OPT_ACK; + + return IPCP_OPT_NAK; +} + +static void dns1_print(void (*print)(const char *fmt,...),struct ipcp_option_t *opt, uint8_t *ptr) +{ + struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt); + struct ipcp_opt32_t *opt32=(struct ipcp_opt32_t*)ptr; + struct in_addr in; + + if (ptr) in.s_addr=opt32->val; + else in.s_addr=dns_opt->addr; + + print("<dns1 %s>",inet_ntoa(in)); +} + +static void dns2_print(void (*print)(const char *fmt,...),struct ipcp_option_t *opt, uint8_t *ptr) +{ + struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt); + struct ipcp_opt32_t *opt32=(struct ipcp_opt32_t*)ptr; + struct in_addr in; + + if (ptr) in.s_addr=opt32->val; + else in.s_addr=dns_opt->addr; + + print("<dns2 %s>",inet_ntoa(in)); +} + +static void __init dns_opt_init() +{ + char *opt; + + opt = conf_get_opt("dns", "dns1"); + if (opt) + conf_dns1 = inet_addr(opt); + + opt = conf_get_opt("dns", "dns2"); + if (opt) + conf_dns2 = inet_addr(opt); + + ipcp_option_register(&dns1_opt_hnd); + ipcp_option_register(&dns2_opt_hnd); +} |