diff options
Diffstat (limited to 'ipset.c')
| -rw-r--r-- | ipset.c | 2326 |
1 files changed, 2326 insertions, 0 deletions
@@ -0,0 +1,2326 @@ +/* Copyright 2000-2004 Joakim Axelsson (gozem@linux.nu) + * Patrick Schaaf (bof@bof.de) + * Jozsef Kadlecsik (kadlec@blackhole.kfki.hu) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <sys/socket.h> +#include <ctype.h> +#include <stdlib.h> +#include <arpa/inet.h> +#include <stdarg.h> +#include <netdb.h> +#include <dlfcn.h> +#include <asm/bitops.h> + +#include "ipset.h" + +/* The list of all sets */ +static struct set *all_sets = NULL; + +/* The list of loaded set types */ +static struct settype *all_settypes = NULL; + +/* Suppress output to stdout and stderr? */ +static int option_quiet = 0; + +/* Data from the command line: */ +static char *set_name = NULL; /* Name of the set */ +static char *set_typename[IP_SET_LEVELS]; /* Set typenames */ +static unsigned int set_typename_level = 0; /* Size of set_typename */ +static ip_set_ip_t set_ip[IP_SET_LEVELS]; /* IP addresses of child set */ +static unsigned int set_level = 0; /* Size of set_ip */ +static unsigned int ip_level = 0; /* Size of add/del/test addresses */ + +/* Max size of a set when hinting. */ +#define MAX_HINT_SIZE 65536 + +#ifdef IP_SET_DEBUG +int option_debug = 0; +#endif + +#define OPTION_OFFSET 256 +static unsigned int global_option_offset = 0; + +/* Now most of these command parsing functions are borrowed from iptables.c */ + +/* Commands */ +#define CMD_NONE 0x0000U +#define CMD_CREATE 0x0001U /* -N */ +#define CMD_DESTROY 0x0002U /* -X */ +#define CMD_FLUSH 0x0004U /* -F */ +#define CMD_RENAME 0x0008U /* -E */ +#define CMD_SWAP 0x0010U /* -W */ +#define CMD_LIST 0x0020U /* -L */ +#define CMD_SAVE 0x0040U /* -S */ +#define CMD_RESTORE 0x0080U /* -R */ +#define CMD_ADD 0x0100U /* -A */ +#define CMD_DEL 0x0200U /* -D */ +#define CMD_TEST 0x0400U /* -T */ +#define CMD_HELP 0x0800U /* -H */ +#define CMD_VERSION 0x1000U /* -V */ +#define CMD_CREATE_CHILD 0x2000U /* -N !!! */ +#define NUMBER_OF_CMD 13 +static const char cmdflags[] = { + 'N', 'X', 'F', 'E', 'W', 'L', 'S', 'R', + 'A', 'D', 'T', 'H', 'V', +}; + +/* Options */ +#define OPT_NONE 0x0000U +#define OPT_NUMERIC 0x0001U /* -n */ +#define OPT_SORTED 0x0002U /* -s */ +#define OPT_QUIET 0x0004U /* -q */ +#define OPT_DEBUG 0x0008U /* -z */ +#define OPT_CHILDSETS 0x0010U /* -c */ +#define OPT_HINT 0x0020U /* -i */ +#define NUMBER_OF_OPT 6 +static const char optflags[] = + { 'n', 's', 'q', 'z', 'c', 'i' }; + +static struct option opts_long[] = { + /* set operations */ + {"create", 1, 0, 'N'}, + {"destroy", 2, 0, 'X'}, + {"flush", 2, 0, 'F'}, + {"rename", 1, 0, 'E'}, + {"swap", 1, 0, 'W'}, + {"list", 2, 0, 'L'}, + + {"save", 2, 0, 'S'}, + {"restore", 0, 0, 'R'}, + + /* ip in set operations */ + {"add", 1, 0, 'A'}, + {"del", 1, 0, 'D'}, + {"test", 1, 0, 'T'}, + + /* free options */ + {"numeric", 0, 0, 'n'}, + {"sorted", 0, 0, 's'}, + {"quiet", 0, 0, 'q'}, + {"childsets",0, 0, 'c'}, + {"hint", 0, 0, 'i'}, + +#ifdef IP_SET_DEBUG + /* debug (if compiled with it) */ + {"debug", 0, 0, 'z'}, +#endif + + /* version and help */ + {"version", 0, 0, 'V'}, + {"help", 2, 0, 'H'}, + + /* end */ + {0} +}; + +static char opts_short[] = + "-N:X::F::E:W:L::S::RA:D:T:nsqzciVh::H::"; + +/* Table of legal combinations of commands and options. If any of the + * given commands make an option legal, that option is legal (applies to + * CMD_LIST and CMD_ZERO only). + * Key: + * + compulsory + * x illegal + * optional + */ + +static char commands_v_options[NUMBER_OF_CMD][NUMBER_OF_OPT] = { + /* -n -s -q -z -c -i*/ + /*CREATE*/ {'x', 'x', ' ', ' ', ' ', 'x'}, + /*DESTROY*/ {'x', 'x', ' ', ' ', 'x', 'x'}, + /*FLUSH*/ {'x', 'x', ' ', ' ', ' ', 'x'}, + /*RENAME*/ {'x', 'x', ' ', ' ', 'x', 'x'}, + /*SWAP*/ {'x', 'x', ' ', ' ', 'x', 'x'}, + /*LIST*/ {' ', ' ', 'x', ' ', ' ', 'x'}, + /*SAVE*/ {'x', 'x', ' ', ' ', 'x', 'x'}, + /*RESTORE*/ {'x', 'x', ' ', ' ', 'x', 'x'}, + /*ADD*/ {'x', 'x', ' ', ' ', 'x', 'x'}, + /*DEL*/ {'x', 'x', ' ', ' ', 'x', 'x'}, + /*TEST*/ {'x', 'x', ' ', ' ', 'x', 'x'}, + /*HELP*/ {'x', 'x', 'x', ' ', 'x', ' '}, + /*VERSION*/ {'x', 'x', 'x', ' ', 'x', 'x'}, +}; + +void exit_tryhelp(int status) +{ + fprintf(stderr, + "Try `%s -H' or '%s --help' for more information.\n", + program_name, program_name); + exit(status); +} + +void exit_error(enum exittype status, char *msg, ...) +{ + va_list args; + + if (!option_quiet) { + va_start(args, msg); + fprintf(stderr, "%s v%s: ", program_name, program_version); + vfprintf(stderr, msg, args); + va_end(args); + fprintf(stderr, "\n"); + if (status == PARAMETER_PROBLEM) + exit_tryhelp(status); + if (status == VERSION_PROBLEM) + fprintf(stderr, + "Perhaps %s or your kernel needs to be upgraded.\n", + program_name); + } + + exit(status); +} + +void ipset_printf(char *msg, ...) +{ + va_list args; + + if (!option_quiet) { + va_start(args, msg); + vfprintf(stdout, msg, args); + va_end(args); + fprintf(stdout, "\n"); + } +} + +static void generic_opt_check(int command, int options) +{ + int i, j, legal = 0; + + /* Check that commands are valid with options. Complicated by the + * fact that if an option is legal with *any* command given, it is + * legal overall (ie. -z and -l). + */ + for (i = 0; i < NUMBER_OF_OPT; i++) { + legal = 0; /* -1 => illegal, 1 => legal, 0 => undecided. */ + + for (j = 0; j < NUMBER_OF_CMD; j++) { + if (!(command & (1 << j))) + continue; + + if (!(options & (1 << i))) { + if (commands_v_options[j][i] == '+') + exit_error(PARAMETER_PROBLEM, + "You need to supply the `-%c' " + "option for this command\n", + optflags[i]); + } else { + if (commands_v_options[j][i] != 'x') + legal = 1; + else if (legal == 0) + legal = -1; + } + } + if (legal == -1) + exit_error(PARAMETER_PROBLEM, + "Illegal option `-%c' with this command\n", + optflags[i]); + } +} + +static char opt2char(int option) +{ + const char *ptr; + for (ptr = optflags; option > 1; option >>= 1, ptr++); + + return *ptr; +} + +static char cmd2char(int option) +{ + const char *ptr; + for (ptr = cmdflags; option > 1; option >>= 1, ptr++); + + return *ptr; +} + +static void set_command(int *cmd, const int newcmd) +{ + if (*cmd != CMD_NONE) + exit_error(PARAMETER_PROBLEM, "Can't use -%c with -%c\n", + cmd2char(newcmd), cmd2char(newcmd)); + *cmd = newcmd; +} + +static void add_option(unsigned int *options, unsigned int option) +{ + if (*options & option) + exit_error(PARAMETER_PROBLEM, + "multiple -%c flags not allowed", + opt2char(option)); + *options |= option; +} + +void *ipset_malloc(size_t size) +{ + void *p; + + if (size == 0) + return NULL; + + if ((p = malloc(size)) == NULL) { + perror("ipset: malloc failed"); + exit(1); + } + return p; +} + +void ipset_free(void **data) +{ + if (*data == NULL) + return; + + free(*data); + *data = NULL; +} + +static struct option *merge_options(struct option *oldopts, + const struct option *newopts, + unsigned int *option_offset) +{ + unsigned int num_old, num_new, i; + struct option *merge; + + for (num_old = 0; oldopts[num_old].name; num_old++); + for (num_new = 0; newopts[num_new].name; num_new++); + + global_option_offset += OPTION_OFFSET; + *option_offset = global_option_offset; + + merge = malloc(sizeof(struct option) * (num_new + num_old + 1)); + memcpy(merge, oldopts, num_old * sizeof(struct option)); + for (i = 0; i < num_new; i++) { + merge[num_old + i] = newopts[i]; + merge[num_old + i].val += *option_offset; + } + memset(merge + num_old + num_new, 0, sizeof(struct option)); + + return merge; +} + +static char *ip_tohost(const struct in_addr *addr) +{ + struct hostent *host; + + DP("ip_tohost()"); + + if ((host = gethostbyaddr((char *) addr, + sizeof(struct in_addr), + AF_INET)) != NULL) { + DP("%s", host->h_name); + return (char *) host->h_name; + } + + return (char *) NULL; +} + +static char *ip_tonetwork(const struct in_addr *addr) +{ + struct netent *net; + + DP("ip_tonetwork()"); + + if ((net = getnetbyaddr((long) ntohl(addr->s_addr), + AF_INET)) != NULL) + return (char *) net->n_name; + + return (char *) NULL; +} + +/* Return a string representation of an IP address. + * Please notice that a pointer to static char* area is returned. + */ +char *ip_tostring(ip_set_ip_t ip, unsigned options) +{ + struct in_addr addr; + char *name; + + addr.s_addr = htonl(ip); + + if (!(options & OPT_NUMERIC)) { + if ((name = ip_tohost(&addr)) != NULL || + (name = ip_tonetwork(&addr)) != NULL) + return name; + } + + return inet_ntoa(addr); +} + +/* Fills the 'ip' with the parsed ip or host in host byte order */ +void parse_ip(const char *str, ip_set_ip_t * ip) +{ + struct hostent *host; + struct in_addr addr; + + if (inet_aton(str, &addr) != 0) { + *ip = ntohl(addr.s_addr); /* We want host byte order */ + +#ifdef IP_SET_DEBUG + { + /*DEBUG*/ char *p = (char *) ip; + DP("PARSE_IP %x %x %x %x %x %x", *ip, 0xC10BF8A6, + p[0], p[1], p[2], p[3]); + } +#endif + + return; + } + + host = gethostbyname(str); + if (host != NULL) { + if (host->h_addrtype != AF_INET || + host->h_length != sizeof(struct in_addr)) + exit_error(PARAMETER_PROBLEM, + "host/network `%s' not an internet name", + str); + if (host->h_addr_list[1] != 0) + exit_error(PARAMETER_PROBLEM, + "host/network `%s' resolves to serveral ip-addresses. " + "Please specify one.", str); + + *ip = ntohl(((struct in_addr *) host->h_addr_list[0])->s_addr); + +#ifdef IP_SET_DEBUG + { + /*DEBUG*/ char *p = (char *) ip; + DP("PARSE_IP %x %x %x %x %x %x", *ip, 0xC10BF8A6, + p[0], p[1], p[2], p[3]); + } +#endif + + return; + } + + exit_error(PARAMETER_PROBLEM, "host/network `%s' not found", str); +} + +/* Fills 'mask' with the parsed mask in host byte order */ +void parse_mask(const char *str, ip_set_ip_t * mask) +{ + struct in_addr addr; + unsigned int bits; + + DP("parse_mask %s", str); + + if (str == NULL) { + /* no mask at all defaults to 32 bits */ + *mask = 0xFFFFFFFF; + return; + } + if (strchr(str, '.') && inet_aton(str, &addr) != 0) { + *mask = ntohl(addr.s_addr); /* We want host byte order */ + return; + } + if (sscanf(str, "%d", &bits) != 1 || bits < 0 || bits > 32) + exit_error(PARAMETER_PROBLEM, + "invalid mask `%s' specified", str); + + DP("bits: %d", bits); + + *mask = 0xFFFFFFFF << (32 - bits); +} + +/* Combines parse_ip and parse_mask */ +void +parse_ipandmask(const char *str, ip_set_ip_t * ip, ip_set_ip_t * mask) +{ + char buf[256]; + char *p; + + strncpy(buf, str, sizeof(buf) - 1); + buf[255] = '\0'; + + if ((p = strrchr(buf, '/')) != NULL) { + *p = '\0'; + parse_mask(p + 1, mask); + } else + parse_mask(NULL, mask); + + /* if a null mask is given, the name is ignored, like in "any/0" */ + if (*mask == 0U) + *ip = 0U; + else + parse_ip(buf, ip); + + DP("parse_ipandmask: %s ip: %08X (%s) mask: %08X", + str, *ip, ip_tostring(*ip, 0), *mask); + + /* Apply the netmask */ + *ip &= *mask; + + DP("parse_ipandmask: %s ip: %08X (%s) mask: %08X", + str, *ip, ip_tostring(*ip, 0), *mask); +} + +/* Return a string representation of a port + * Please notice that a pointer to static char* area is returned + * and we assume TCP protocol. + */ +char *port_tostring(ip_set_ip_t port, unsigned options) +{ + struct servent *service; + static char name[] = "65535"; + + if (!(options & OPT_NUMERIC) + && (service = getservbyport(htons(port), "tcp"))) + return service->s_name; + + sprintf(name, "%u", port); + return name; +} + +int +string_to_number(const char *str, unsigned int min, unsigned int max, + ip_set_ip_t *port) +{ + long number; + char *end; + + /* Handle hex, octal, etc. */ + errno = 0; + number = strtol(str, &end, 0); + if (*end == '\0' && end != str) { + /* we parsed a number, let's see if we want this */ + if (errno != ERANGE && min <= number && number <= max) { + *port = number; + return 0; + } + } + return -1; +} + +static int +string_to_port(const char *str, ip_set_ip_t *port) +{ + struct servent *service; + + if ((service = getservbyname(str, "tcp")) != NULL) { + *port = ntohs((unsigned short) service->s_port); + return 0; + } + + return -1; +} + +/* Fills the 'ip' with the parsed port in host byte order */ +void parse_port(const char *str, ip_set_ip_t *port) +{ + if ((string_to_number(str, 0, 65535, port) != 0) + && (string_to_port(str, port) != 0)) + exit_error(PARAMETER_PROBLEM, "Invalid TCP port `%s' specified", str); +} + +static struct settype *settype_find(const char *typename) +{ + struct settype *runner = all_settypes; + + DP("settype %s", typename); + + while (runner != NULL) { + if (strncmp(runner->typename, typename, + IP_SET_MAXNAMELEN) == 0) + return runner; + + runner = runner->next; + } + + return NULL; /* not found */ +} + +static struct settype *settype_load(const char *typename) +{ + char path[sizeof(IPSET_LIB_DIR) + sizeof(IPSET_LIB_NAME) + + strlen(typename)]; + struct settype *settype; + + /* do some search in list */ + settype = settype_find(typename); + if (settype != NULL) + return settype; /* found */ + + /* Else we have to load it */ + sprintf(path, IPSET_LIB_DIR IPSET_LIB_NAME, typename); + + if (dlopen(path, RTLD_NOW)) { + /* Found library. */ + + settype = settype_find(typename); + + if (settype != NULL) + return settype; + } + + /* Can't load the settype */ + exit_error(PARAMETER_PROBLEM, + "Couldn't load settype `%s':%s\n", + typename, dlerror()); + + return NULL; /* Never executed, but keep compilers happy */ +} + +/* Register a new set type */ +void settype_register(struct settype *settype) +{ + struct settype *chk; + + DP("register_settype '%s'\n", settype->typename); + + /* Check if this typename already exists */ + chk = settype_find(settype->typename); + + if (chk != NULL) + exit_error(OTHER_PROBLEM, + "Set type '%s' already registred!\n", + settype->typename); + + /* Check version */ + if (settype->protocol_version != IP_SET_PROTOCOL_VERSION) + exit_error(OTHER_PROBLEM, + "Set type is of wrong protocol version %u!" + " I'm am of version %u.\n", settype->typename, + settype->protocol_version, + IP_SET_PROTOCOL_VERSION); + + /* Insert first */ + settype->next = all_settypes; + settype->data = ipset_malloc(settype->create_size); + all_settypes = settype; + + DP("ip_set: register settype end '%s'\n", settype->typename); +} + +static int kernel_getsocket(void) +{ + int sockfd = -1; + + sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); + if (sockfd < 0) + exit_error(OTHER_PROBLEM, + "You need to be root to perform this command."); + + return sockfd; +} + +static void kernel_error(int err) +{ + /* translate errnos, as returned by our *sockopt() functions */ + exit_error(OTHER_PROBLEM, "Error from kernel: %s", strerror(err)); +} + +static void kernel_sendto(void *data, size_t size) +{ + int res; + int sockfd = kernel_getsocket(); + + /* Send! */ + res = setsockopt(sockfd, SOL_IP, SO_IP_SET, data, size); + + DP("kernel_sendto() res=%d errno=%d\n", res, errno); + + if (res != 0) + kernel_error(errno); +} + +/* Used by addip and delip that has to handle the EEXIST error better */ +static int kernel_sendto_handleexist(void *data, size_t size) +{ + int res; + int sockfd = kernel_getsocket(); + + /* Send! */ + res = setsockopt(sockfd, SOL_IP, SO_IP_SET, data, size); + + DP("kernel_sendto_handleexist() res=%d errno=%d\n", res, errno); + + if (res != 0 && errno == EEXIST) + return -1; + else if (res != 0) + kernel_error(errno); + + return 0; /* all ok */ +} + +static void kernel_getfrom(void *data, size_t * size) +{ + int res; + int sockfd = kernel_getsocket(); + + /* Send! */ + res = getsockopt(sockfd, SOL_IP, SO_IP_SET, data, size); + + DP("kernel_getfrom() res=%d errno=%d\n", res, errno); + + if (res != 0) + kernel_error(errno); +} + +static int get_protocolversion(void) +{ + struct ip_set_req_version req_version; + size_t size = sizeof(struct ip_set_req_version); + + req_version.op = IP_SET_OP_VERSION; + + kernel_getfrom(&req_version, &size); + + DP("get_protocolversion() ver=%d", req_version.version); + + return req_version.version; +} + +static void set_append(struct set *set) +{ + struct set *entry = all_sets; + + while (entry != NULL && entry->next != NULL) + entry = entry->next; + + if (entry == NULL) + all_sets = set; + else + entry->next = set; +} + +static void get_sets(void) +{ + void *data = NULL; + struct ip_set_req_listing_size req_list; + int sockfd = kernel_getsocket(); + size_t size; + size_t eaten = 0; + int i, res; + + DP("get_sets()"); + for (i = 0; i < LIST_TRIES; i++) { + req_list.op = IP_SET_OP_LISTING_SIZE; + size = sizeof(req_list); + kernel_getfrom(&req_list, &size); + size = req_list.size; + + DP("got size: %d", size); + + if (req_list.size == 0) + return; /* No sets in kernel */ + + data = ipset_malloc(size); + ((struct ip_set_req_base *) data)->op = IP_SET_OP_LISTING; + + /* Get! */ + res = getsockopt(sockfd, SOL_IP, SO_IP_SET, data, &size); + DP("list_get getsockopt() res=%d errno=%d\n", res, errno); + + if (res == 0) + goto got_sets; /* all OK */ + else if (errno != ENOMEM) + break; /* Not a memory error */ + + DP("not enough mem, looping again"); + free(data); + } + + if (errno == ENOMEM) + exit_error(OTHER_PROBLEM, + "Tried to list sets from kernel %d times" + " and failed. Please try again when the load on" + " the sets has gone down.", LIST_TRIES); + else + kernel_error(errno); + + got_sets: + + DP("get_sets() - size=%d data=%p", size, data); + /* Handle the data */ + while (eaten < size) { + struct ip_set_req_listing *header = + (struct ip_set_req_listing *) (data + eaten); + struct set *set = ipset_malloc(sizeof(struct set)); + + memset(set, 0, sizeof(struct set)); + + DP("fillin %d %p", eaten, header); + +#ifdef IP_SET_DEBUG + /* DEBUG */ + { + void *i; + + DP("SET DATA:"); + + for (i = data + eaten; + i < + data + eaten + + sizeof(struct ip_set_req_listing); i += 4) { + unsigned *j = (unsigned *) i; + DP("%x", *j); + } + } +#endif + + /* Fill in data */ + DP("Processing set '%s'", header->name); + strcpy(set->name, header->name); + set->id = header->id; + set->levels = header->levels; + set->ref = header->ref; + for (i = 0; i < set->levels; i++) { + set->settype[i] = settype_load(header->typename[i]); + set->private[i].adt = + ipset_malloc(set->settype[i]->req_size); + } + + eaten += sizeof(struct ip_set_req_listing); + + DP("insert in list"); + set_append(set); + } + + DP("free"); + + free(data); + + DP("get_sets() eaten = %d, size = %d", eaten, size); + + if (eaten != size) + exit_error(OTHER_PROBLEM, + "Desynched in listing of sets from kernel. " + "Read %d bytes. Worked %d bytes.", size, eaten); +} + +struct set *set_find(const char *setname) +{ + struct set *set = all_sets; + + DP("%s", setname); + + while (set != NULL) { + if (strcmp(setname, set->name) == 0) + return set; + set = set->next; + } + return NULL; +} + +static struct set *set_checkname(const char *setname) +{ + char *saved = strdup(setname); + char *ptr, *tmp = saved; + struct set *set; + int i; + + DP("%s", setname); + + /* Cleanup */ + if (set_name != NULL) + free(set_name); + + for (i = 0; i < IP_SET_SETIP_LEVELS; i++) + set_ip[i] = 0; + set_level = 0; + + /* name[:ip,...] */ + ptr = strsep(&tmp, ":"); + if (strlen(ptr) > IP_SET_MAXNAMELEN - 1) + exit_error(PARAMETER_PROBLEM, + "Setname '%s' in '%s' too long. Max %d characters.", + ptr, setname, IP_SET_MAXNAMELEN - 1); + + DP("%s (%s)", ptr, tmp); + set = set_find(ptr); + if (!set && tmp) + exit_error(PARAMETER_PROBLEM, + "Set '%s' not found for '%s'\n", + ptr, setname); + + set_name = strdup(ptr); + + while (set_level < IP_SET_SETIP_LEVELS && tmp) { + ptr = strsep(&tmp, ","); + switch (set->settype[set_level]->typecode) { + case IPSET_TYPE_IP: + parse_ip(ptr, &set_ip[set_level++]); + break; + case IPSET_TYPE_PORT: + parse_port(ptr, &set_ip[set_level++]); + break; + default: + ; /* Keep compilers happy */ + } + if (set->levels <= set_level) + exit_error(PARAMETER_PROBLEM, + "Subset definition is too deep for set '%s'\n", + set_name); + } + + free(saved); + return set; +} + +static inline struct set *set_find_byname(const char *setname) +{ + struct set *set = set_checkname(setname); + + if (!set) + exit_error(PARAMETER_PROBLEM, + "Set '%s' not found\n", setname); + return set; +} + +static void set_checktype(const char *typename) +{ + char *saved = strdup(typename); + char *ptr, *tmp = saved; + int i; + + /* Cleanup */ + for (i = 0; i < IP_SET_LEVELS; i++) + if (set_typename[i] != NULL) + free(set_typename[i]); + + /* typename[,...] */ + set_typename_level = 0; + while (set_typename_level < IP_SET_LEVELS && tmp) { + ptr = strsep(&tmp, ","); + DP("settype '%s', level %i", ptr, set_typename_level); + if (strlen(ptr) > IP_SET_MAXNAMELEN - 1) + exit_error(PARAMETER_PROBLEM, + "Typename '%s' in '%s' too long. Max %d characters.", + ptr, typename, IP_SET_MAXNAMELEN - 1); + set_typename[set_typename_level++] = strdup(ptr); + } + DP("tmp '%s', level %i", tmp, set_typename_level); + if (set_typename_level >= IP_SET_LEVELS || tmp) + exit_error(PARAMETER_PROBLEM, + "More than %d settypes in '%s'.", + IP_SET_LEVELS - 1 , typename); + free(saved); +} + +/* Get setid from kernel. */ +static void +set_get_setid(struct set *set) +{ + struct ip_set_req_get req_get; + size_t size = sizeof(struct ip_set_req_get); + + DP("set_get_setid()"); + + req_get.op = IP_SET_OP_GETSET_BYNAME; + strcpy(req_get.name, set->name); + + /* Result in the id-field */ + kernel_getfrom(&req_get, &size); + + if (size != sizeof(struct ip_set_req_get)) + exit_error(OTHER_PROBLEM, + "Incorrect return size from kernel." + "Should be %d but was %d.", + sizeof(struct ip_set_req_get), size); + + DP("set_get_setid() result=%u", req_get.id); + + if (req_get.id < 0) + exit_error(OTHER_PROBLEM, + "Set %s cannot be found.", + set->name); + + set->id = req_get.id; + set->ref = req_get.ref; +} + +/* Send create set order to kernel */ +static void +set_create(struct set *set) +{ + struct ip_set_req_create req_create; + struct settype *settype = set->settype[0]; + size_t size; + void *data; + int i; + + DP("set_create()"); + + req_create.op = IP_SET_OP_CREATE; + strcpy(req_create.name, set->name); + for (i = 0; i < set_typename_level; i++) + strcpy(req_create.typename[i], set->settype[i]->typename); + req_create.levels = set_typename_level; + + /* Final checks */ + settype->create_final(settype->data, settype->flags); + + /* Alloc memory for the data to send */ + size = sizeof(struct ip_set_req_create) + settype->create_size; + data = ipset_malloc(size); + + /* Add up ip_set_req_create and the settype data */ + memcpy(data, &req_create, sizeof(struct ip_set_req_create)); + memcpy(data + sizeof(struct ip_set_req_create), + settype->data, settype->create_size); + +#ifdef IP_SET_DEBUG + /* DEBUG */ + { + void *i; + + DP("CMD_CREATE"); + DP("OP %u", req_create.op); + DP("Name: %s", req_create.name); + DP("Typename: %s", req_create.typename[0]); + DP("All data"); + + for (i = data; i < data + size; i += 4) { + unsigned *j = (unsigned *) i; + DP("%x", *j); + } + } +#endif + + kernel_sendto(data, size); + free(data); + + /* Get set id from kernel */ + set_get_setid(set); + /* Success! */ + set_append(set); +} + +/* Send create childset order to kernel */ +static void +set_create_childset(const struct set *set, unsigned options) +{ + struct ip_set_req_sub req_sub; + struct settype *settype = set->settype[set_level]; + size_t size; + void *data; + int i; + + DP("childset_create()"); + + req_sub.op = IP_SET_OP_CREATE_CHILD; + req_sub.id = set->id; + for (i = 0; i < set_level; i++) + req_sub.ip[i] = set_ip[i]; + req_sub.level = set_level; + req_sub.childsets = options & OPT_CHILDSETS; + + /* Final checks */ + settype->create_final(settype->data, settype->flags); + + /* Alloc memory for the data to send */ + size = sizeof(struct ip_set_req_sub) + settype->create_size; + data = ipset_malloc(size); + + /* Add up ip_set_req_sub and the settype data */ + memcpy(data, &req_sub, sizeof(struct ip_set_req_sub)); + memcpy(data + sizeof(struct ip_set_req_sub), + settype->data, settype->create_size); + +#ifdef IP_SET_DEBUG + /* DEBUG */ + { + void *i; + + DP("CMD_CREATE_CHILD"); + DP("OP %u", req_sub.op); + DP("Id: %u", req_sub.id); + DP("All data"); + + for (i = data; i < data + size; i += 4) { + unsigned *j = (unsigned *) i; + DP("%x", *j); + } + } +#endif + + kernel_sendto(data, size); + free(data); +} + +static void set_del(struct set *set) +{ + int i; + + for (i = 0; i < set->levels; i++) { + if (set->private[i].setdata) + set->settype[i]->killmembers(&set->private[i].setdata); + ipset_free(&set->private[i].bitmap); + } + + free(set); +} + +/* Sends destroy order to kernel for one or all sets + * All sets: set == NULL + */ +static void set_destroy(struct set *set) +{ + struct ip_set_req_std req_destroy; + + req_destroy.op = IP_SET_OP_DESTROY; + + if (set == NULL) { + /* Do them all */ + + while (all_sets != NULL) { + set = all_sets; + all_sets = set->next; + req_destroy.id = set->id; + req_destroy.level = 0; + kernel_sendto(&req_destroy, + sizeof(struct ip_set_req_std)); + set_del(set); + } + } else { + int i; + + DP("destroy %s", set->name); + + /* Only destroy one */ + req_destroy.id = set->id; + for (i = 0; i < set_level; i++) + req_destroy.ip[i] = set_ip[i]; + req_destroy.level = set_level; + kernel_sendto(&req_destroy, + sizeof(struct ip_set_req_std)); + if (set_level == 0) { + if (set == all_sets) + all_sets = set->next; + else { + struct set *entry = all_sets; + + while (entry && entry->next && entry->next != set) + entry = entry->next; + if (entry->next == set) + entry->next = set->next; + } + set_del(set); + } + } +} + +/* Sends flush order to kernel for one or all sets + * All sets: set = NULL + */ +static void set_flush(const struct set *set, unsigned options) +{ + struct ip_set_req_sub req_flush; + + DP("flush"); + + req_flush.op = IP_SET_OP_FLUSH; + + if (set == NULL) { + /* Do them all */ + struct set *entry = all_sets; + + while (entry != NULL) { + req_flush.id = entry->id; + req_flush.level = 0; + req_flush.childsets = options & OPT_CHILDSETS; + kernel_sendto(&req_flush, + sizeof(struct ip_set_req_sub)); + entry = entry->next; + } + } else { + int i; + + /* Only one */ + req_flush.id = set->id; + for (i = 0; i < set_level; i++) + req_flush.ip[i] = set_ip[i]; + req_flush.level = set_level; + req_flush.childsets = options & OPT_CHILDSETS; + kernel_sendto(&req_flush, sizeof(struct ip_set_req_sub)); + } +} + +/* Sends rename order to kernel */ +static void set_rename(struct set *set, const char *newname) +{ + struct ip_set_req_rename req_rename; + + DP("rename"); + + req_rename.op = IP_SET_OP_RENAME; + req_rename.id = set->id; + strncpy(req_rename.newname, newname, IP_SET_MAXNAMELEN); + + DP("rename - send"); + kernel_sendto(&req_rename, sizeof(struct ip_set_req_rename)); + + strncpy(set->name, newname, IP_SET_MAXNAMELEN); +} + +/* Sends swap order to kernel for two sets */ +static void set_swap(struct set *from, struct set *to) +{ + struct ip_set_req_swap req_swap; + + DP("swap"); + + req_swap.op = IP_SET_OP_SWAP; + req_swap.id = from->id; + req_swap.to = to->id; + + DP("swap - send"); + kernel_sendto(&req_swap, sizeof(struct ip_set_req_swap)); + + from->id = req_swap.to; + to->id = req_swap.id; +} + +static void *list_get(int opsize, int opget, ip_set_ip_t id, + int *size, ip_set_ip_t *ip, unsigned level) +{ + int res, i; + struct ip_set_req_list req_list; + struct ip_set_req_std *req_data; + int sockfd = kernel_getsocket(); + void *data = NULL; + + req_list.op = opsize; + req_list.id = id; + req_list.level = level; + for (i = 0; i < level; i++) + req_list.ip[i] = ip[i]; + + *size = sizeof(req_list); + kernel_getfrom(&req_list, size); + + DP("got size: %d", req_list.size); + + if (req_list.size == 0) + return data; + + *size = sizeof(struct ip_set_req_std) > req_list.size ? + sizeof(struct ip_set_req_std) : req_list.size; + + data = ipset_malloc(*size); + req_data = (struct ip_set_req_std *) data; + req_data->op = opget; + req_data->id = id; + req_data->level = level; + for (i = 0; i < level; i++) + req_data->ip[i] = ip[i]; + + /* Get! */ + res = getsockopt(sockfd, SOL_IP, SO_IP_SET, data, size); + DP("list_get getsockopt() res=%d errno=%d\n", res, errno); + + if (res != 0) + kernel_error(errno); + + /* All OK, return */ + return data; +} + +static void list_getheaders(struct set *set, ip_set_ip_t *ip, unsigned level) +{ + void *data; + size_t size; + + data = list_get(IP_SET_OP_LIST_HEADER_SIZE, + IP_SET_OP_LIST_HEADER, + set->id, &size, ip, level); + + if (size == 0) + exit_error(OTHER_PROBLEM, + "Kernel returned zero header size. " + "Something screwed up."); + + /* Cleanup setdata */ + if (set->private[level].setdata) + set->settype[level]->killmembers(&set->private[level].setdata); + + /* Handle the data */ + set->settype[level]->initheader(&set->private[level].setdata, + data, size); + + ipset_free(&data); +} + +static void list_getmembers(struct set *set, ip_set_ip_t *ip, unsigned level) +{ + void *data; + size_t size; + + data = list_get(IP_SET_OP_LIST_MEMBERS_SIZE, + IP_SET_OP_LIST_MEMBERS, + set->id, &size, ip, level); + + if (size == 0) + exit_error(OTHER_PROBLEM, + "Kernel returned zero header size. " + "Something screwed up."); + + /* Handle the data */ + set->settype[level]->initmembers(set->private[level].setdata, + data, size); + + /* Next list_getheaders or set_del frees the data */ +} + +static void list_getchildsets(struct set *set, ip_set_ip_t *ip, unsigned level) +{ + void *data; + size_t size; + + data = list_get(IP_SET_OP_LIST_CHILDSETS_SIZE, + IP_SET_OP_LIST_CHILDSETS, + set->id, &size, ip, level); + + /* Cleanup */ + ipset_free(&set->private[level].bitmap); + set->private[level].bitmap = NULL; + + if (size == 0) + return; /* No child set */ + + /* Handle the data */ + set->private[level].bitmap = data; + + /* Next list_getchildsets or set_del frees the data */ +} + +/* Print a child set */ +static void set_list_childset(struct set *set, + unsigned options, + ip_set_ip_t *ip, + unsigned level) +{ + int i; + ip_set_ip_t id; + + /* Load the set header, member and childset data */ + list_getheaders(set, ip, level); + list_getmembers(set, ip, level); + list_getchildsets(set, ip, level); + + /* Pretty print the childset */ + printf("Childset %s %s", + set->private[level].bitmap != NULL ? "+" : "-", + set->name); + for (i = 0; i < level; i++) { + switch (set->settype[i]->typecode) { + case IPSET_TYPE_IP: + printf("%s%s", i == 0 ? ":" : ",", + ip_tostring(ip[i], options)); + break; + case IPSET_TYPE_PORT: + printf("%s%s", i == 0 ? ":" : ",", + port_tostring(ip[i], options)); + break; + default: + ; + } + } + printf("\n"); + + /* Pretty print the type header */ + set->settype[level]->printheader(set->private[level].setdata, options); + + /* Pretty print all IPs */ + if (options & OPT_SORTED) + set->settype[level]->printips_sorted(set->private[level].setdata, options); + else + set->settype[level]->printips(set->private[level].setdata, options); + + /* Pretty print all childsets. */ + if (!(set->private[level].bitmap != NULL && (options & OPT_CHILDSETS))) + return; + + for (id = 0; + id < set->settype[level]->sizeid(set->private[level].setdata); + id++) { + if (test_bit(id, set->private[level].bitmap)) { + ip[level] = set->settype[level]->getipbyid( + set->private[level].setdata, id); + set_list_childset(set, options, ip, level+1); + } + } +} + +/* Help function to set_list() */ +static void set_list_oneset(struct set *set, + unsigned options) +{ + int i; + + /* Pretty print the set */ + printf("Name %s\n", set->name); + printf("Type %s", set->settype[0]->typename); + for (i = 1; i < set->levels; i++) + printf(",%s", set->settype[i]->typename); + printf("\n"); + printf("References %d\n", set->ref); + + /* Pretty print the childset */ + set_list_childset(set, options, set_ip, set_level); + + printf("\n"); /* One newline between sets */ +} + +/* Print a set or all sets + * All sets: set = NULL + */ +static void set_list(struct set *set, unsigned options) +{ + if (set == NULL) { + set = all_sets; + + while (set != NULL) { + set_list_oneset(set, options); + set = set->next; + } + } else + set_list_oneset(set, options); +} + +/* Performs a save to stdout + * All sets are marked with set.name[0] == '\0' + * Area pointed by 'set' will be changed + */ +static void set_save(const struct set *set) +{ + DP("set_save() not yet implemented"); +} + +/* Performs a restore from stdin */ +static void set_restore() +{ + DP("set_restore() not yet implemented"); +} + +static void parse_adt_ip(int cmd, struct set *set, const char *adt_ip) +{ + char *saved = strdup(adt_ip); + char *ptr, *tmp = saved; + + ip_level = set_level; + + while (ip_level <= set->levels && tmp) { + + if (ip_level > set_level) + list_getheaders(set, set_ip, ip_level); + + ptr = strsep(&tmp, ","); + + /* Call the parser function */ + set_ip[ip_level] = set->settype[ip_level]->adt_parser( + cmd, ptr, + set->private[ip_level].adt, + set->private[ip_level].setdata); + DP("%i: (%s)", ip_level, ip_tostring(set_ip[ip_level], 0)); + ip_level++; + } + + if (tmp || ip_level > set->levels) + exit_error(PARAMETER_PROBLEM, + "Specified (child) set and IP levels together" + " are deeper than %s set (%i).", + set->name, set->levels); + + free(saved); +} + +/* Sends addip order to kernel for a set */ +static void set_addip(struct set *set, const char *adt_ip) +{ + struct ip_set_req_std req_addip; + size_t size, offset; + void *data; + int i; + + DP("set_addip() %p", set); + + list_getheaders(set, set_ip, set_level); + + parse_adt_ip(ADT_ADD, set, adt_ip); + + req_addip.op = IP_SET_OP_ADD_IP; + req_addip.id = set->id; + for (i = 0; i < set_level; i++) + req_addip.ip[i] = set_ip[i]; + req_addip.level = set_level; + + DP("%i %i", set_level, ip_level); + /* Alloc memory for the data to send */ + DP("alloc"); + size = sizeof(struct ip_set_req_std); + for (i = set_level; i < ip_level; i++) { + size += set->settype[i]->req_size; + DP("i: %i, size: %u", i, size); + } + data = ipset_malloc(size); + + /* Add up req_addip and the settype data */ + DP("mem"); + memcpy(data, &req_addip, sizeof(struct ip_set_req_std)); + offset = sizeof(struct ip_set_req_std); + for (i = set_level; i < ip_level; i++) { + memcpy(data + offset, + set->private[i].adt, + set->settype[i]->req_size); + offset += set->settype[i]->req_size; + } + +#ifdef IP_SET_DEBUG + /* DEBUG */ + { + void *i; + + DP("CMD_ADDIP"); + DP("OP %u", req_addip.op); + DP("Id: %u", req_addip.id); + DP("All data"); + + for (i = data; i < data + size; i += 4) { + unsigned *j = (unsigned *) i; + DP("%x", *j); + } + } +#endif + + if (kernel_sendto_handleexist(data, size) == -1) + /* Arghh, we can't get the commandline string anymore, oh well */ + exit_error(OTHER_PROBLEM, "Already added in set %s.", + set->name); + free(data); +} + +/* Sends delip order to kernel for a set */ +static void set_delip(struct set *set, const char *adt_ip, unsigned options) +{ + struct ip_set_req_std req_delip; + size_t size, offset; + void *data; + int i; + + DP("set_delip()"); + + list_getheaders(set, set_ip, set_level); + + parse_adt_ip(ADT_DEL, set, adt_ip); + + req_delip.op = IP_SET_OP_DEL_IP; + req_delip.id = set->id; + for (i = 0; i < set_level; i++) + req_delip.ip[i] = set_ip[i]; + req_delip.level = set_level; + + /* Alloc memory for the data to send */ + size = sizeof(struct ip_set_req_std); + for (i = set_level; i < ip_level; i++) + size += set->settype[i]->req_size; + data = ipset_malloc(size); + + /* Add up req_sub and the settype data */ + memcpy(data, &req_delip, sizeof(struct ip_set_req_std)); + offset = sizeof(struct ip_set_req_std); + for (i = set_level; i < ip_level; i++) { + memcpy(data + offset, + set->private[i].adt, + set->settype[i]->req_size); + offset += set->settype[i]->req_size; + } + +#ifdef IP_SET_DEBUG + /* DEBUG */ + { + void *i; + + DP("CMD_DELIP"); + DP("OP %u", req_delip.op); + DP("Id: %u", req_delip.id); + DP("All data"); + + for (i = data; i < data + size; i += 4) { + unsigned *j = (unsigned *) i; + DP("%x", *j); + } + } +#endif + + if (kernel_sendto_handleexist(data, size) == -1) + /* Arghh, we can't get the commandline string anymore, oh well */ + exit_error(OTHER_PROBLEM, "Doesn't exist in set %s.", + set->name); + free(data); +} + +/* Sends test order to kernel for a set */ +static int +set_testip(struct set *set, const char *name, const char *adt_ip) +{ + int i, res; + struct ip_set_req_test req_test; + void *data; + size_t size, offset; + + list_getheaders(set, set_ip, set_level); + + parse_adt_ip(ADT_TEST, set, adt_ip); + + req_test.op = IP_SET_OP_TEST_IP; + req_test.id = set->id; + for (i = 0; i < set_level; i++) + req_test.ip[i] = set_ip[i]; + req_test.level = set_level; + + /* Alloc memory for the data to send */ + size = sizeof(struct ip_set_req_test); + for (i = set_level; i < ip_level; i++) + size += set->settype[i]->req_size; + data = ipset_malloc(size); + + /* Add up req_test and the settype data */ + memcpy(data, &req_test, sizeof(struct ip_set_req_test)); + offset = sizeof(struct ip_set_req_test); + for (i = set_level; i < ip_level; i++) { + memcpy(data + offset, + set->private[i].adt, + set->settype[i]->req_size); + offset += set->settype[i]->req_size; + } + /* Result in the op-field */ + kernel_getfrom(data, &size); + + if (size != sizeof(struct ip_set_req_test)) + exit_error(OTHER_PROBLEM, + "Incorrect return size from kernel." + "Should be %d but was %d.", + sizeof(struct ip_set_req_test), size); + + DP("set_testip() result=%x", req_test.op); + + if (((struct ip_set_req_test *)data)->reply > 0) { + ipset_printf("%s is in set %s.", adt_ip, name); + res = 0; /* Return value for the program */ + } else { + ipset_printf("%s is NOT in set %s.", adt_ip, name); + res = 1; + } + + free(data); + return res; +} + +/* Prints help + * If settype is non null help for that type is printed as well + */ +static void set_help(const struct settype *settype) +{ +#ifdef IP_SET_DEBUG + char debughelp[] = + " --debug -z Enable debugging\n\n"; +#else + char debughelp[] = "\n"; +#endif + + printf("%s v%s\n\n" + "Usage: %s -N new-set settype [options]\n" + " %s -[XFLSH] [set] [options]\n" + " %s -[EW] from-set to-set\n" + " %s -[ADT] set entry\n" + " %s -R\n" + " %s -h (print this help information)\n\n", + program_name, program_version, program_name, program_name, + program_name, program_name, program_name, program_name); + + printf("Commands:\n" + "Either long or short options are allowed.\n" + " --create -N setname settype0[,settype1,...] <options>\n" + " Create a new set\n" + " --create -N setname:IP[,IP...] settype <options>\n" + " Create childset at setname:IP[,IP...]\n" + " --destroy -X [setname:IP,....]\n" + " Destroy a (child)set or all sets\n" + " --flush -F [setname:IP,...] [options]\n" + " Delete a (child)set or all sets\n" + " --rename -E from-set to-set\n" + " Rename from-set to to-set\n" + " --swap -W from-set to-set\n" + " Swap the content of two existing sets\n" + " --list -L [setname:IP,...] [options]\n" + " List the entries in a (child)set or all sets\n" + " --save -S [setname]\n" + " Save the set or all sets to stdout\n" + " --restore -R\n" + " Restores from stdin a saved state\n" + " --add -A setname[:IP,...] entry[,entry...]\n" + " Add an entry to a (child)set\n" + " --del -D setname[:IP,...] entry[,entry...]\n" + " Deletes an entry from a (child)set\n" + " --test -T setname[:IP,...] entry[,entry...]\n" + " Tests if an entry exists in a (child)set.\n" + " --help -H [settype] [options]]\n" + " Prints this help, and settype specific help\n" + " --version -V\n" + " Prints version information\n\n" + "Options:\n" + " --sorted -s Numeric sort of the IPs in -L\n" + " --numeric -n Numeric output of addresses in a -L\n" + " --quiet -q Suppress any output to stdout and stderr.\n" + " --childsets -c Operation valid for child sets\n" + " --hint -i Hint best settype initialization parameters\n"); + printf(debughelp); + + if (settype != NULL) { + printf("Type '%s' specific:\n", settype->typename); + settype->usage(); + } +} + +/* Hint various infos on a given settype */ +static int +settype_hint(const struct settype *settype, unsigned options) +{ + char buffer[1024]; + ip_set_ip_t ip[MAX_HINT_SIZE]; + ip_set_ip_t id = 0; + + if (!settype->hint) + return 0; + + while (fgets(buffer, sizeof(buffer), stdin) != NULL + && id < MAX_HINT_SIZE) { + if (buffer[0] == '\n' || buffer[0] == '#') + continue; + switch (settype->typecode) { + case IPSET_TYPE_IP: + parse_ip(buffer, &ip[id++]); + break; + case IPSET_TYPE_PORT: + parse_port(buffer, &ip[id++]); + break; + default: + ; + } + } + if (id >= MAX_HINT_SIZE) + exit_error(OTHER_PROBLEM, + "More than %ld entries, exiting.", + MAX_HINT_SIZE); + if (id < 1) + exit_error(OTHER_PROBLEM, + "No input, no hint."); + + settype->hint(settype->data, ip, id); + + return 0; +} + +static void init_sets(void) +{ + int version; + static int done = 0; + + if (done) + return; + + version = get_protocolversion(); + if (version != IP_SET_PROTOCOL_VERSION) + exit_error(OTHER_PROBLEM, + "Kernel ipset code is of protocol version %u." + "I'm of protocol version %u.\n" + "Please upgrade your kernel and/or ipset(8) utillity.", + version, IP_SET_PROTOCOL_VERSION); + + /* Get the list of existing sets from the kernel */ + get_sets(); + done = 1; +} + +/* Main worker function */ +int parse_commandline(int argc, char *argv[], int exec_restore) +{ + int res = 0; + unsigned command = 0; + unsigned options = 0; + int c; + + struct set *set = NULL; + struct set *set_to = NULL; /* Used by -W */ + struct settype *settype = NULL; /* Used by -H */ + char *name = NULL; /* Used by -E */ + char *entries = NULL; /* Used by -A, -D, -T */ + + struct option *opts = opts_long; + + /* Suppress error messages: we may add new options if we + demand-load a protocol. */ + opterr = 0; + + while ((c = getopt_long(argc, argv, opts_short, opts, NULL)) != -1) { + + DP("commandline parsed: opt %c (%s)", c, argv[optind]); + + switch (c) { + /* + * Command selection. + */ + case 'h': + case 'H':{ /* Help */ + set_command(&command, CMD_HELP); + + if (optarg) + set_checktype(optarg); + else if (optind < argc + && argv[optind][0] != '-') + set_checktype(argv[optind++]); + + if (!set_typename_level) + break; + + if (set_typename_level != 1) + exit_error(PARAMETER_PROBLEM, + "-%c requires one settype as argument", + cmd2char(CMD_HELP)); + + settype = settype_load(set_typename[0]); + + /* Merge the hint options */ + if (settype->hint_parse) { + opts = merge_options(opts, + settype->hint_opts, + &settype->option_offset); + + /* Reset space for settype create data */ + memset(settype->data, 0, settype->hint_size); + + /* Zero the flags */ + settype->flags = 0; + + DP("call hint_init"); + /* Call the settype hint_init */ + settype->hint_init(settype->data); + } + + break; + } + + case 'V':{ /* Version */ + /* Dont display kernel protocol version because + * that might generate errors if the ipset module + * is not loaded in.*/ + printf("%s v%s Protocol version %u.\n", + program_name, program_version, + IP_SET_PROTOCOL_VERSION); + exit(0); + } + + case 'N':{ /* Create */ + char *typename = NULL; + int i; + + init_sets(); + + DP("check setname"); + /* setname */ + set = set_checkname(optarg); + + if (set_level == 0) { + /* New set to be created */ + + DP(" new set, set_level == 0"); + + if (set != NULL) + exit_error(OTHER_PROBLEM, + "Set %s already exists.", + set_name); + set = ipset_malloc(sizeof(struct set)); + memset(set, 0, sizeof(struct set)); + + set_command(&command, CMD_CREATE); + + /* typename */ + if (optind < argc + && argv[optind][0] != '-') + typename = argv[optind++]; + else + exit_error(PARAMETER_PROBLEM, + "-%c requires new-setname and settype", + cmd2char(CMD_CREATE)); + + DP(" check typename"); + set_checktype(typename); + + strcpy(set->name, set_name); + set->levels = set_typename_level; + + DP("load the settypes"); + for (i = 0; i < set_typename_level; i++) + set->settype[i] = settype_load(set_typename[i]); + + } else {/* set_level != 0 */ + /* New childset to be created */ + + DP(" new childset, set_level != 0"); + + if (set == NULL) + exit_error(OTHER_PROBLEM, + "Set %s does not exist.", + set_name); + set_command(&command, CMD_CREATE_CHILD); + + /* typename */ + if (optind < argc + && argv[optind][0] != '-') + typename = argv[optind++]; + else + exit_error(PARAMETER_PROBLEM, + "-%c requires new-setname and settype", + cmd2char(CMD_CREATE)); + + DP(" check typename"); + set_checktype(typename); + if (set_typename_level > 1) + exit_error(PARAMETER_PROBLEM, + "-%c requires single settype specified", + cmd2char(CMD_CREATE)); + else if (set_level >= set->levels) + exit_error(PARAMETER_PROBLEM, + "specified childset is deeper than " + "%s set itself.", set->name); + else if (strcmp(typename, set->settype[set_level]->typename)) + exit_error(PARAMETER_PROBLEM, + "settype '%s' must be used instead of " + "'%s' in childset '%s'", + set->settype[set_level]->typename, + typename, optarg); + } + + DP("merge options"); + /* Merge the create options */ + opts = merge_options(opts, + set->settype[set_level]->create_opts, + &set->settype[set_level]->option_offset); + + /* Reset space for settype create data */ + memset(set->settype[set_level]->data, 0, + set->settype[set_level]->create_size); + + /* Zero the flags */ + set->settype[set_level]->flags = 0; + + DP("call create_init"); + /* Call the settype create_init */ + set->settype[set_level]->create_init( + set->settype[set_level]->data); + + break; + } + + case 'X':{ /* Destroy */ + init_sets(); + + set_command(&command, CMD_DESTROY); + + if (optarg) + set = set_find_byname(optarg); + else if (optind < argc + && argv[optind][0] != '-') + set = set_find_byname(argv[optind++]); + else + set = NULL; /* Mark to destroy all (empty) sets */ + + if (set && set_level >= set->levels) + exit_error(PARAMETER_PROBLEM, + "specified childset is deeper than " + "%s set itself.", set->name); + break; + } + + case 'F':{ /* Flush */ + init_sets(); + + set_command(&command, CMD_FLUSH); + + DP("flush: %s", optarg); + + if (optarg) + set = set_find_byname(optarg); + else if (optind < argc + && argv[optind][0] != '-') + set = set_find_byname(argv[optind++]); + else + set = NULL; /* Mark to flush all */ + + if (set && set_level >= set->levels) + exit_error(PARAMETER_PROBLEM, + "specified childset is deeper than " + "%s set itself.", set->name); + break; + } + + case 'E':{ /* Rename */ + init_sets(); + + set_command(&command, CMD_RENAME); + + set = set_find_byname(optarg); + if (set_level) + exit_error(PARAMETER_PROBLEM, + "childsets cannot be swapped"); + + if (optind < argc + && argv[optind][0] != '-') + name = argv[optind++]; + else + exit_error(PARAMETER_PROBLEM, + "-%c requires a setname " + "and the new name for that set", + cmd2char(CMD_RENAME)); + if (strlen(name) > IP_SET_MAXNAMELEN - 1) + exit_error(PARAMETER_PROBLEM, + "Setname '%s' is too long. Max %d characters.", + name, IP_SET_MAXNAMELEN - 1); + + /* Set with new name must not exist. */ + set_to = set_checkname(name); + if (set_to) + exit_error(PARAMETER_PROBLEM, + "Set already exists, cannot rename to %s", + name); + if (set_level) + exit_error(PARAMETER_PROBLEM, + "childsets cannot be swapped"); + + break; + } + + case 'W':{ /* Swap */ + char *name = NULL; + + init_sets(); + + set_command(&command, CMD_SWAP); + + set = set_find_byname(optarg); + if (set_level) + exit_error(PARAMETER_PROBLEM, + "childsets cannot be swapped"); + + if (optind < argc + && argv[optind][0] != '-') + name = argv[optind++]; + else + exit_error(PARAMETER_PROBLEM, + "-%c requires the names of two " + "existing sets", + cmd2char(CMD_SWAP)); + if (strlen(name) > IP_SET_MAXNAMELEN - 1) + exit_error(PARAMETER_PROBLEM, + "Setname '%s' is too long. Max %d characters.", + name, IP_SET_MAXNAMELEN - 1); + + /* Both sets must exist. */ + set_to = set_find_byname(name); + if (set_level) + exit_error(PARAMETER_PROBLEM, + "childsets cannot be swapped"); + + break; + } + + case 'L':{ /* List */ + init_sets(); + + set_command(&command, CMD_LIST); + if (optarg) + set = set_find_byname(optarg); + else if (optind < argc + && argv[optind][0] != '-') + set = set_find_byname(argv[optind++]); + else + set = NULL; /* Mark all */ + + if (set && set_level >= set->levels) + exit_error(PARAMETER_PROBLEM, + "specified childset is deeper than " + "%s set itself.", set->name); + break; + } + + case 'S':{ /* Save */ + init_sets(); + + set_command(&command, CMD_SAVE); + if (optarg) + set = set_find_byname(optarg); + else if (optind < argc + && argv[optind][0] != '-') + set = set_find_byname(argv[optind++]); + else + set = NULL; /* Mark to save all */ + + if (set && set_level >= set->levels) + exit_error(PARAMETER_PROBLEM, + "specified childset is deeper than " + "%s set itself.", set->name); + break; + } + + case 'R':{ /* Restore */ + init_sets(); + + set_command(&command, CMD_RESTORE); + break; + } + + case 'A':{ /* Add IP */ + init_sets(); + + set_command(&command, CMD_ADD); + + set = set_find_byname(optarg); + + if (set_level >= set->levels) + exit_error(PARAMETER_PROBLEM, + "specified childset is deeper than " + "%s set itself.", set->name); + + /* entries */ + if (optind < argc + && argv[optind][0] != '-') + entries = argv[optind++]; + else + exit_error(PARAMETER_PROBLEM, + "-%c requires setname and entries", + cmd2char(CMD_ADD)); + + break; + } + + case 'D':{ /* Del IP */ + init_sets(); + + set_command(&command, CMD_DEL); + + set = set_find_byname(optarg); + + if (set_level >= set->levels) + exit_error(PARAMETER_PROBLEM, + "specified childset is deeper than " + "%s set itself.", set->name); + + if (optind < argc + && argv[optind][0] != '-') + entries = argv[optind++]; + else + exit_error(PARAMETER_PROBLEM, + "-%c requires setname and entries", + cmd2char(CMD_DEL)); + + break; + } + + case 'T':{ /* Test IP */ + init_sets(); + + set_command(&command, CMD_TEST); + + set = set_find_byname(optarg); + name = optarg; + + if (set_level >= set->levels) + exit_error(PARAMETER_PROBLEM, + "specified childset is deeper than " + "%s set itself.", set->name); + + if (optind < argc + && argv[optind][0] != '-') + entries = argv[optind++]; + else + exit_error(PARAMETER_PROBLEM, + "-%c requires setname and entries", + cmd2char(CMD_TEST)); + + break; + } + + /* options */ + + case 'n': + add_option(&options, OPT_NUMERIC); + break; + + case 's': + add_option(&options, OPT_SORTED); + break; + + case 'q': + add_option(&options, OPT_QUIET); + option_quiet = 1; + break; + +#ifdef IP_SET_DEBUG + case 'z': /* debug */ + add_option(&options, OPT_DEBUG); + option_debug = 1; + break; +#endif + + case 'c': + add_option(&options, OPT_CHILDSETS); + break; + + case 'i': + add_option(&options, OPT_HINT); + break; + + case 1: /* non option */ + printf("Bad argument `%s'\n", optarg); + exit_tryhelp(2); + break; /*always good */ + + default:{ + DP("default"); + + switch (command) { + case CMD_CREATE: + res = set->settype[set_level]->create_parse( + c - set->settype[set_level]->option_offset, + argv, + set->settype[set_level]->data, + &set->settype[set_level]->flags); + break; + + case CMD_CREATE_CHILD: + res = set->settype[set_level]->create_parse( + c - set->settype[set_level]->option_offset, + argv, + set->settype[set_level]->data, + &set->settype[set_level]->flags); + break; + + case CMD_HELP: { + if (!(settype && settype->hint_parse)) + break; + + res = settype->hint_parse( + c - settype->option_offset, + argv, + settype->data); + break; + } + default: + res = 0; /* failed */ + } /* switch (command) */ + + + if (!res) + exit_error(PARAMETER_PROBLEM, + "Unknown arg `%s'", + argv[optind - 1]); + + } + + DP("next arg"); + } /* switch */ + + } /* while( getopt_long() ) */ + + + if (optind < argc) + exit_error(PARAMETER_PROBLEM, + "unknown arguments found on commandline"); + if (!command) + exit_error(PARAMETER_PROBLEM, "no command specified"); + + /* Check options */ + generic_opt_check(command == CMD_CREATE_CHILD ? CMD_CREATE : command, options); + + DP("cmd: %c", cmd2char(command)); + + switch (command) { + case CMD_CREATE: + DP("CMD_CREATE"); + set_create(set); + break; + + case CMD_CREATE_CHILD: + DP("CMD_CREATE_CHILD"); + set_create_childset(set, options); + break; + + case CMD_DESTROY: + set_destroy(set); + break; + + case CMD_FLUSH: + set_flush(set, options); + break; + + case CMD_RENAME: + set_rename(set, name); + break; + + case CMD_SWAP: + set_swap(set, set_to); + break; + + case CMD_LIST: + set_list(set, options); + break; + + case CMD_SAVE: + set_save(set); + break; + + case CMD_RESTORE: + set_restore(); + break; + + case CMD_ADD: + set_addip(set, entries); + break; + + case CMD_DEL: + set_delip(set, entries, options); + break; + + case CMD_TEST: + res = set_testip(set, name, entries); + break; + + case CMD_HELP: + if (options & OPT_HINT) + res = settype_hint(settype, options); + else + set_help(settype); + break; + + default: + /* Will never happen */ + ; /* Keep the compiler happy */ + + } /* switch( command ) */ + + return res; +} + + +int main(int argc, char *argv[]) +{ + return parse_commandline(argc, argv, 0); + +} |