1*0f4c859eSApple OSS Distributions #include <errno.h> 2*0f4c859eSApple OSS Distributions #include <stdio.h> 3*0f4c859eSApple OSS Distributions #include <stdlib.h> 4*0f4c859eSApple OSS Distributions #include <string.h> 5*0f4c859eSApple OSS Distributions #include <strings.h> 6*0f4c859eSApple OSS Distributions 7*0f4c859eSApple OSS Distributions #include <net/route.h> 8*0f4c859eSApple OSS Distributions #include <sys/socket.h> 9*0f4c859eSApple OSS Distributions #include <unistd.h> 10*0f4c859eSApple OSS Distributions 11*0f4c859eSApple OSS Distributions #include <darwintest.h> 12*0f4c859eSApple OSS Distributions 13*0f4c859eSApple OSS Distributions #define ROUNDUP32(n) (((n) + sizeof(uint32_t) - 1) & ~(sizeof(uint32_t) - 1)) 14*0f4c859eSApple OSS Distributions 15*0f4c859eSApple OSS Distributions T_DECL(route_output_stack_oflow_56033075, "Stack overflow via ma_copy through route_output") 16*0f4c859eSApple OSS Distributions { 17*0f4c859eSApple OSS Distributions int s; 18*0f4c859eSApple OSS Distributions uint8_t buf[ 19*0f4c859eSApple OSS Distributions sizeof(struct rt_msghdr) + 20*0f4c859eSApple OSS Distributions ROUNDUP32(sizeof(struct sockaddr_storage) + 1) + /* RTAX_DST */ 21*0f4c859eSApple OSS Distributions ROUNDUP32(sizeof(struct sockaddr_storage) + 1) + /* RTAX_GATEWAY */ 22*0f4c859eSApple OSS Distributions ROUNDUP32(sizeof(struct sockaddr_storage) + 1) /* RTAX_NETMASK */ 23*0f4c859eSApple OSS Distributions ]; 24*0f4c859eSApple OSS Distributions struct rt_msghdr *rtm = (struct rt_msghdr *)buf; 25*0f4c859eSApple OSS Distributions struct sockaddr *sa; 26*0f4c859eSApple OSS Distributions size_t len; 27*0f4c859eSApple OSS Distributions 28*0f4c859eSApple OSS Distributions bzero(buf, sizeof(buf)); 29*0f4c859eSApple OSS Distributions rtm->rtm_type = RTM_GET; 30*0f4c859eSApple OSS Distributions rtm->rtm_version = RTM_VERSION; 31*0f4c859eSApple OSS Distributions rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK; 32*0f4c859eSApple OSS Distributions len = sizeof(struct rt_msghdr); 33*0f4c859eSApple OSS Distributions 34*0f4c859eSApple OSS Distributions /* RTAX_DST: */ 35*0f4c859eSApple OSS Distributions sa = (struct sockaddr *)(rtm + 1); 36*0f4c859eSApple OSS Distributions sa->sa_family = AF_INET6; 37*0f4c859eSApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage) + 1; 38*0f4c859eSApple OSS Distributions memset(&sa->sa_data[0], 0xff, sa->sa_len); 39*0f4c859eSApple OSS Distributions len += ROUNDUP32(sa->sa_len); 40*0f4c859eSApple OSS Distributions 41*0f4c859eSApple OSS Distributions /* RTAX_GATEWAY: */ 42*0f4c859eSApple OSS Distributions sa = (struct sockaddr *)((void *)buf + len); 43*0f4c859eSApple OSS Distributions sa->sa_family = AF_INET6; 44*0f4c859eSApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage) + 1; 45*0f4c859eSApple OSS Distributions memset(&sa->sa_data[0], 0xff, sa->sa_len); 46*0f4c859eSApple OSS Distributions len += ROUNDUP32(sa->sa_len); 47*0f4c859eSApple OSS Distributions 48*0f4c859eSApple OSS Distributions /* RTAX_NETMASK: */ 49*0f4c859eSApple OSS Distributions sa = (struct sockaddr *)((void *)buf + len); 50*0f4c859eSApple OSS Distributions sa->sa_family = AF_INET6; 51*0f4c859eSApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage) + 1; 52*0f4c859eSApple OSS Distributions memset(&sa->sa_data[0], 0x41, sa->sa_len); 53*0f4c859eSApple OSS Distributions len += ROUNDUP32(sa->sa_len); 54*0f4c859eSApple OSS Distributions 55*0f4c859eSApple OSS Distributions T_SETUPBEGIN; 56*0f4c859eSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(s = socket(PF_ROUTE, SOCK_RAW, PF_ROUTE), NULL); 57*0f4c859eSApple OSS Distributions T_SETUPEND; 58*0f4c859eSApple OSS Distributions 59*0f4c859eSApple OSS Distributions /* check we get EINVAL for > sizeof(struct sockaddr_storage): */ 60*0f4c859eSApple OSS Distributions rtm->rtm_msglen = len; 61*0f4c859eSApple OSS Distributions T_ASSERT_EQ(-1, send(s, buf, len, 0), NULL); 62*0f4c859eSApple OSS Distributions T_ASSERT_EQ(EINVAL, errno, NULL); 63*0f4c859eSApple OSS Distributions 64*0f4c859eSApple OSS Distributions /* now check the ok case: */ 65*0f4c859eSApple OSS Distributions len = sizeof(struct rt_msghdr); 66*0f4c859eSApple OSS Distributions 67*0f4c859eSApple OSS Distributions /* RTAX_DST: */ 68*0f4c859eSApple OSS Distributions sa = (struct sockaddr *)(rtm + 1); 69*0f4c859eSApple OSS Distributions sa->sa_family = AF_INET6; 70*0f4c859eSApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage); 71*0f4c859eSApple OSS Distributions len += ROUNDUP32(sa->sa_len); 72*0f4c859eSApple OSS Distributions 73*0f4c859eSApple OSS Distributions /* RTAX_GATEWAY: */ 74*0f4c859eSApple OSS Distributions sa = (struct sockaddr *)((void *)buf + len); 75*0f4c859eSApple OSS Distributions sa->sa_family = AF_INET6; 76*0f4c859eSApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage); 77*0f4c859eSApple OSS Distributions len += ROUNDUP32(sa->sa_len); 78*0f4c859eSApple OSS Distributions 79*0f4c859eSApple OSS Distributions /* RTAX_NETMASK: */ 80*0f4c859eSApple OSS Distributions sa = (struct sockaddr *)((void *)buf + len); 81*0f4c859eSApple OSS Distributions sa->sa_family = AF_INET6; 82*0f4c859eSApple OSS Distributions sa->sa_len = sizeof(struct sockaddr_storage); 83*0f4c859eSApple OSS Distributions len += ROUNDUP32(sa->sa_len); 84*0f4c859eSApple OSS Distributions 85*0f4c859eSApple OSS Distributions rtm->rtm_msglen = len; 86*0f4c859eSApple OSS Distributions T_ASSERT_EQ(-1, send(s, buf, len, 0), NULL); 87*0f4c859eSApple OSS Distributions T_ASSERT_EQ(ESRCH, errno, NULL); 88*0f4c859eSApple OSS Distributions } 89