| #ifndef _LIBIPT_SET_H |
| #define _LIBIPT_SET_H |
| |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| #include <errno.h> |
| |
| #ifdef DEBUG |
| #define DEBUGP(x, args...) fprintf(stderr, x, ## args) |
| #else |
| #define DEBUGP(x, args...) |
| #endif |
| |
| static void |
| parse_bindings(const char *optarg, struct ipt_set_info *info) |
| { |
| char *saved = strdup(optarg); |
| char *ptr, *tmp = saved; |
| int i = 0; |
| |
| while (i < (IP_SET_MAX_BINDINGS - 1) && tmp != NULL) { |
| ptr = strsep(&tmp, ","); |
| if (strncmp(ptr, "src", 3) == 0) |
| info->flags[i++] |= IPSET_SRC; |
| else if (strncmp(ptr, "dst", 3) == 0) |
| info->flags[i++] |= IPSET_DST; |
| else |
| exit_error(PARAMETER_PROBLEM, |
| "You must spefify (the comma separated list of) 'src' or 'dst'."); |
| } |
| |
| if (tmp) |
| exit_error(PARAMETER_PROBLEM, |
| "Can't follow bindings deeper than %i.", |
| IP_SET_MAX_BINDINGS - 1); |
| |
| free(saved); |
| } |
| |
| static int get_set_getsockopt(void *data, socklen_t * size) |
| { |
| int sockfd = -1; |
| sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); |
| if (sockfd < 0) |
| exit_error(OTHER_PROBLEM, |
| "Can't open socket to ipset.\n"); |
| /* Send! */ |
| return getsockopt(sockfd, SOL_IP, SO_IP_SET, data, size); |
| } |
| |
| static void get_set_byname(const char *setname, struct ipt_set_info *info) |
| { |
| struct ip_set_req_get_set req; |
| socklen_t size = sizeof(struct ip_set_req_get_set); |
| int res; |
| |
| req.op = IP_SET_OP_GET_BYNAME; |
| req.version = IP_SET_PROTOCOL_VERSION; |
| strncpy(req.set.name, setname, IP_SET_MAXNAMELEN); |
| req.set.name[IP_SET_MAXNAMELEN - 1] = '\0'; |
| res = get_set_getsockopt(&req, &size); |
| if (res != 0) |
| exit_error(OTHER_PROBLEM, |
| "Problem when communicating with ipset, errno=%d.\n", |
| errno); |
| if (size != sizeof(struct ip_set_req_get_set)) |
| exit_error(OTHER_PROBLEM, |
| "Incorrect return size from kernel during ipset lookup, " |
| "(want %ld, got %ld)\n", |
| sizeof(struct ip_set_req_get_set), size); |
| if (req.set.index == IP_SET_INVALID_ID) |
| exit_error(PARAMETER_PROBLEM, |
| "Set %s doesn't exist.\n", setname); |
| |
| info->index = req.set.index; |
| } |
| |
| static void get_set_byid(char * setname, ip_set_id_t index) |
| { |
| struct ip_set_req_get_set req; |
| socklen_t size = sizeof(struct ip_set_req_get_set); |
| int res; |
| |
| req.op = IP_SET_OP_GET_BYINDEX; |
| req.version = IP_SET_PROTOCOL_VERSION; |
| req.set.index = index; |
| res = get_set_getsockopt(&req, &size); |
| if (res != 0) |
| exit_error(OTHER_PROBLEM, |
| "Problem when communicating with ipset, errno=%d.\n", |
| errno); |
| if (size != sizeof(struct ip_set_req_get_set)) |
| exit_error(OTHER_PROBLEM, |
| "Incorrect return size from kernel during ipset lookup, " |
| "(want %ld, got %ld)\n", |
| sizeof(struct ip_set_req_get_set), size); |
| if (req.set.name[0] == '\0') |
| exit_error(PARAMETER_PROBLEM, |
| "Set id %i in kernel doesn't exist.\n", index); |
| |
| strncpy(setname, req.set.name, IP_SET_MAXNAMELEN); |
| } |
| |
| #endif /*_LIBIPT_SET_H*/ |