1*a325d9c4SApple OSS Distributions #include <errno.h> 2*a325d9c4SApple OSS Distributions #include <stdio.h> 3*a325d9c4SApple OSS Distributions #include <stdlib.h> 4*a325d9c4SApple OSS Distributions #include <string.h> 5*a325d9c4SApple OSS Distributions #include <strings.h> 6*a325d9c4SApple OSS Distributions 7*a325d9c4SApple OSS Distributions #include <net/route.h> 8*a325d9c4SApple OSS Distributions #include <sys/socket.h> 9*a325d9c4SApple OSS Distributions #include <unistd.h> 10*a325d9c4SApple OSS Distributions 11*a325d9c4SApple OSS Distributions #include <darwintest.h> 12*a325d9c4SApple OSS Distributions 13*a325d9c4SApple OSS Distributions #define ROUNDUP32(n) (((n) + sizeof(uint32_t) - 1) & ~(sizeof(uint32_t) - 1)) 14*a325d9c4SApple OSS Distributions 15*a325d9c4SApple OSS Distributions T_DECL(route_output_stack_oflow_56033075, "Stack overflow via ma_copy through route_output") 16*a325d9c4SApple OSS Distributions { 17*a325d9c4SApple OSS Distributions int s; 18*a325d9c4SApple OSS Distributions uint8_t buf[ 19*a325d9c4SApple OSS Distributions sizeof(struct rt_msghdr) + 20*a325d9c4SApple OSS Distributions ROUNDUP32(sizeof(struct sockaddr_storage) + 1) + /* RTAX_DST */ 21*a325d9c4SApple OSS Distributions ROUNDUP32(sizeof(struct sockaddr_storage) + 1) + /* RTAX_GATEWAY */ 22*a325d9c4SApple OSS Distributions ROUNDUP32(sizeof(struct sockaddr_storage) + 1) /* RTAX_NETMASK */ 23*a325d9c4SApple OSS Distributions ]; 24*a325d9c4SApple OSS Distributions struct rt_msghdr *rtm = (struct rt_msghdr *)buf; 25*a325d9c4SApple OSS Distributions struct sockaddr *sa; 26*a325d9c4SApple OSS Distributions size_t len; 27*a325d9c4SApple OSS Distributions 28*a325d9c4SApple OSS Distributions bzero(buf, sizeof(buf)); 29*a325d9c4SApple OSS Distributions rtm->rtm_type = RTM_GET; 30*a325d9c4SApple OSS Distributions rtm->rtm_version = RTM_VERSION; 31*a325d9c4SApple OSS Distributions rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK; 32*a325d9c4SApple OSS Distributions len = sizeof(struct rt_msghdr); 33*a325d9c4SApple OSS Distributions 34*a325d9c4SApple OSS Distributions /* RTAX_DST: */ 35*a325d9c4SApple OSS Distributions sa = (struct sockaddr *)(rtm + 1); 36*a325d9c4SApple OSS Distributions sa->sa_family = AF_INET6; 37*a325d9c4SApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage) + 1; 38*a325d9c4SApple OSS Distributions memset(&sa->sa_data[0], 0xff, sa->sa_len); 39*a325d9c4SApple OSS Distributions len += ROUNDUP32(sa->sa_len); 40*a325d9c4SApple OSS Distributions 41*a325d9c4SApple OSS Distributions /* RTAX_GATEWAY: */ 42*a325d9c4SApple OSS Distributions sa = (struct sockaddr *)((void *)buf + len); 43*a325d9c4SApple OSS Distributions sa->sa_family = AF_INET6; 44*a325d9c4SApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage) + 1; 45*a325d9c4SApple OSS Distributions memset(&sa->sa_data[0], 0xff, sa->sa_len); 46*a325d9c4SApple OSS Distributions len += ROUNDUP32(sa->sa_len); 47*a325d9c4SApple OSS Distributions 48*a325d9c4SApple OSS Distributions /* RTAX_NETMASK: */ 49*a325d9c4SApple OSS Distributions sa = (struct sockaddr *)((void *)buf + len); 50*a325d9c4SApple OSS Distributions sa->sa_family = AF_INET6; 51*a325d9c4SApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage) + 1; 52*a325d9c4SApple OSS Distributions memset(&sa->sa_data[0], 0x41, sa->sa_len); 53*a325d9c4SApple OSS Distributions len += ROUNDUP32(sa->sa_len); 54*a325d9c4SApple OSS Distributions 55*a325d9c4SApple OSS Distributions T_SETUPBEGIN; 56*a325d9c4SApple OSS Distributions T_ASSERT_POSIX_SUCCESS(s = socket(PF_ROUTE, SOCK_RAW, PF_ROUTE), NULL); 57*a325d9c4SApple OSS Distributions T_SETUPEND; 58*a325d9c4SApple OSS Distributions 59*a325d9c4SApple OSS Distributions /* check we get EINVAL for > sizeof(struct sockaddr_storage): */ 60*a325d9c4SApple OSS Distributions rtm->rtm_msglen = len; 61*a325d9c4SApple OSS Distributions T_ASSERT_EQ(-1, send(s, buf, len, 0), NULL); 62*a325d9c4SApple OSS Distributions T_ASSERT_EQ(EINVAL, errno, NULL); 63*a325d9c4SApple OSS Distributions 64*a325d9c4SApple OSS Distributions /* now check the ok case: */ 65*a325d9c4SApple OSS Distributions len = sizeof(struct rt_msghdr); 66*a325d9c4SApple OSS Distributions 67*a325d9c4SApple OSS Distributions /* RTAX_DST: */ 68*a325d9c4SApple OSS Distributions sa = (struct sockaddr *)(rtm + 1); 69*a325d9c4SApple OSS Distributions sa->sa_family = AF_INET6; 70*a325d9c4SApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage); 71*a325d9c4SApple OSS Distributions len += ROUNDUP32(sa->sa_len); 72*a325d9c4SApple OSS Distributions 73*a325d9c4SApple OSS Distributions /* RTAX_GATEWAY: */ 74*a325d9c4SApple OSS Distributions sa = (struct sockaddr *)((void *)buf + len); 75*a325d9c4SApple OSS Distributions sa->sa_family = AF_INET6; 76*a325d9c4SApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage); 77*a325d9c4SApple OSS Distributions len += ROUNDUP32(sa->sa_len); 78*a325d9c4SApple OSS Distributions 79*a325d9c4SApple OSS Distributions /* RTAX_NETMASK: */ 80*a325d9c4SApple OSS Distributions sa = (struct sockaddr *)((void *)buf + len); 81*a325d9c4SApple OSS Distributions sa->sa_family = AF_INET6; 82*a325d9c4SApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage); 83*a325d9c4SApple OSS Distributions len += ROUNDUP32(sa->sa_len); 84*a325d9c4SApple OSS Distributions 85*a325d9c4SApple OSS Distributions rtm->rtm_msglen = len; 86*a325d9c4SApple OSS Distributions T_ASSERT_EQ(-1, send(s, buf, len, 0), NULL); 87*a325d9c4SApple OSS Distributions T_ASSERT_EQ(ESRCH, errno, NULL); 88*a325d9c4SApple OSS Distributions } 89