coydog/zmap-freebsd
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Merge remote-tracking branch 'upstream/master' into FREEBSD

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Conflicts:
	src/Makefile
This commit is contained in:
William Kelly 2013-10-17 02:44:09 -05:00
commit d14879487b
40 changed files with 1458 additions and 2160 deletions
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11
.gitignore vendored
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@ -4,3 +4,14 @@
*~
\#*
src/zmap
CMakeFiles
*.cmake
Makefile
CMakeCache.txt
src/zopt.h
src/zopt.c
lexer.c
lexer.h
parser.c
parser.h
install_manifest.txt

4
AUTHORS
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@ -1,3 +1,7 @@
Zakir Durumeric <zakird@umich.edu>
J. Alex Halderman <jhalderm@umich.edu>
Eric Wustrow <ewust@umich.edu>
David Adrian <davadria@umich.edu>
HD Moore <HD_Moore@rapid7.com>

70
CMakeLists.txt Normal file
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@ -0,0 +1,70 @@
cmake_minimum_required (VERSION 2.6)
project (ZMAP C)
option(WITH_REDIS "Build with support for Redis DB" OFF)
option(WITH_JSON "Build with support for JSON" OFF)
option(ENABLE_DEVELOPMENT "Enable development specific compiler and linker flags" OFF)
option(ENABLE_HARDENING "Add hardening specific compiler and linker flags" ON)
if(ENABLE_DEVELOPMENT)
# Hardening and warnings for building with gcc
# Maybe add -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
set(GCCWARNINGS
"-Wall -Wformat=2 -Wno-format-nonliteral"
"-pedantic -fno-strict-aliasing"
"-Wextra"
"-Wfloat-equal -Wundef -Wwrite-strings -Wredundant-decls"
"-Wnested-externs -Wbad-function-cast -Winit-self"
"-Wmissing-noreturn -Wnormalized=id"
"-Wstack-protector"
"-Werror"
)
# Fix line breaks
string(REPLACE ";" " " GCCWARNINGS "${GCCWARNINGS}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GCCWARNINGS} -g")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -g")
endif()
if(ENABLE_HARDENING)
set(GCCHARDENING "-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-all -fwrapv -fPIC --param ssp-buffer-size=1")
set(LDHARDENING "-z relro -z now")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GCCHARDENING}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${LDHARDENING}")
endif()
if(WITH_REDIS)
set(REDIS_LIBS hiredis)
add_definitions("-DREDIS")
endif()
if(WITH_JSON)
include(FindPkgConfig)
pkg_check_modules(JSON json)
if(JSON_FOUND)
include_directories(JSON_INCLUDE_DIRS)
else()
message(FATAL_ERROR "Did not find libjson")
endif()
add_definitions("-DJSON")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${JSON_CFLAGS}")
endif()
# Standard FLAGS
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pthread")
# Extra target FLAGS
set(CMAKE_C_FLAGS_DEBUG "-O2 -g")
set(CMAKE_C_FLAGS_RELEASE "-O2")
add_subdirectory(src)
# Install conf files
FILE(GLOB CONF_FILES RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}/conf" "conf/*")
message(STATUS "${CONF_FILES}")
configure_file(zmap_conf_install.cmake.in zmap_conf_install.cmake)
install(SCRIPT zmap_conf_install.cmake)

14
INSTALL
View File

@ -10,16 +10,16 @@ ZMap requires GMP, a free library for arbitrary precision arithmetic,
gengetopt, and libpcap. These packages can be installed on
Debian-based systems by running:
sudo apt-get install libgmp3-dev gengetopt libpcap-dev
sudo apt-get install libgmp3-dev gengetopt libpcap-dev flex byacc
or on RHEL- and Fedora-based systems by running:
sudo yum install gmp gmp-devel gengetopt libpcap-devel
sudo yum install gmp gmp-devel gengetopt libpcap-devel flex byacc
Once these prerequisites have been installed, ZMap can be installed
by running:
cd src
cmake [-DWITH_REDIS=ON] [-DWITH_JSON=ON] [-DENABLE_DEVELOPMENT=ON] [-DENABLE_HARDENING=ON] ./
make
followed by:
@ -27,12 +27,12 @@ followed by:
sudo make install
Redis support is not enabled by default. If you are want to use ZMap
with Redis, you will first need to install Hiredis. Then, rebuild
ZMap with the command "make REDIS=true".
with Redis, you will first need to install Hiredis. Then run cmake with
"-DWITH_REDIS=ON".
JSON support is not enabled by default. If you are want to use ZMap
with JSON output, you will first need to install json-c. Then, rebuild
ZMap with the command "make JSON=true".
with JSON output, you will first need to install json-c. Then, run cmake with
"-DWITH_JSON=ON"
Installing json-c requires git and autotools to be available. For more
information on how to install json-c, please see http://github.com/json-c/json-c

95
lib/blacklist.c
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@ -25,6 +25,10 @@
static constraint_t *constraint = NULL;
uint32_t blacklist_lookup_index(uint64_t index) {
return ntohl(constraint_lookup_index(constraint, index, ADDR_ALLOWED));
}
// check whether a single IP address is allowed to be scanned.
// 1 => is allowed
// 0 => is not allowed
@ -47,7 +51,39 @@ void whitelist_prefix(char *ip, int prefix_len)
constraint_set(constraint, ntohl(inet_addr(ip)), prefix_len, ADDR_ALLOWED);
}
static int init(char *file, const char *name, int value)
static int init_from_string(char *ip, int value)
{
int prefix_len = 32;
char *slash = strchr(ip, '/');
if (slash) { // split apart network and prefix length
*slash = '\0';
char *end;
char *len = slash+1;
errno = 0;
prefix_len = strtol(len, &end, 10);
if (end == len || errno != 0 || prefix_len < 0 || prefix_len > 32) {
log_fatal("constraint", "'%s' is not a valid prefix length", len);
return -1;
}
}
struct in_addr addr;
if (inet_aton(ip, &addr) == 0) {
log_error("constraint", "'%s' is not a valid IP address", ip);
return -1;
}
constraint_set(constraint, ntohl(addr.s_addr), prefix_len, value);
const char *name;
if (value == ADDR_DISALLOWED)
name = "blacklisting";
else
name = "whitelisting";
log_trace(name, "%s %s/%i",
name, ip, prefix_len);
return 0;
}
static int init_from_file(char *file, const char *name, int value)
{
FILE *fp;
char line[1000];
@ -66,31 +102,22 @@ static int init(char *file, const char *name, int value)
if ((sscanf(line, "%32s", ip)) == EOF) {
continue;
}
int prefix_len = 32;
char *slash = strchr(ip, '/');
if (slash) { // split apart network and prefix length
*slash = '\0';
char *end;
char *len = slash+1;
errno = 0;
prefix_len = strtol(len, &end, 10);
if (end == len || errno != 0 || prefix_len < 0 || prefix_len > 32) {
log_fatal(name, "Unable to parse %s file: %s ('%s' is not a valid prefix length)", name, file, len);
if (init_from_string(ip, value)) {
log_fatal(name, "unable to parse %s file: %s", name, file);
}
}
struct in_addr addr;
if (inet_aton(ip, &addr) == 0) {
log_fatal(name, "Unable to parse %s file: %s ('%s' is not a valid IP address)", name, file, ip);
}
constraint_set(constraint, ntohl(addr.s_addr), prefix_len, value);
log_trace(name, "%sing %s/%i",
name, ip, prefix_len);
}
fclose(fp);
return 0;
}
static void init_from_array(char **cidrs, size_t len, int value)
{
for (int i=0; i < (int) len; i++) {
init_from_string(cidrs[i], value);
}
}
uint64_t blacklist_count_allowed()
{
assert(constraint);
@ -103,27 +130,43 @@ uint64_t blacklist_count_not_allowed()
return constraint_count_ips(constraint, ADDR_DISALLOWED);
}
// Initialize address constraints from whitelist and blacklist files.
// Either can be set to NULL to omit.
int blacklist_init_from_files(char *whitelist_filename, char *blacklist_filename)
int blacklist_init(char *whitelist_filename, char *blacklist_filename,
char **whitelist_entries, size_t whitelist_entries_len,
char **blacklist_entries, size_t blacklist_entries_len)
{
assert(!constraint);
if (whitelist_filename) {
if (whitelist_filename && whitelist_entries) {
log_warn("whitelist", "both a whitelist file and destination addresses "
"were specified. The union of these two sources "
"will be utilized.");
}
if (whitelist_filename || whitelist_entries) {
// using a whitelist, so default to allowing nothing
constraint = constraint_init(ADDR_DISALLOWED);
log_trace("whitelist", "blacklisting 0.0.0.0/0");
init(whitelist_filename, "whitelist", ADDR_ALLOWED);
if (whitelist_filename) {
init_from_file(whitelist_filename, "whitelist", ADDR_ALLOWED);
}
if (whitelist_entries) {
init_from_array(whitelist_entries,
whitelist_entries_len, ADDR_ALLOWED);
}
} else {
// no whitelist, so default to allowing everything
constraint = constraint_init(ADDR_ALLOWED);
}
if (blacklist_filename) {
init(blacklist_filename, "blacklist", ADDR_DISALLOWED);
init_from_file(blacklist_filename, "blacklist", ADDR_DISALLOWED);
}
constraint_optimize(constraint);
if (blacklist_entries) {
init_from_array(blacklist_entries, blacklist_entries_len, ADDR_DISALLOWED);
}
constraint_paint_value(constraint, ADDR_ALLOWED);
uint64_t allowed = blacklist_count_allowed();
log_debug("blacklist", "%lu addresses allowed to be scanned (%0.0f%% of address space)",
allowed, allowed*100./((long long int)1 << 32));
return 0;
return EXIT_SUCCESS;
}

8
lib/blacklist.h
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@ -1,12 +1,18 @@
#include <stdlib.h>
#include <stdint.h>
#ifndef BLACKLIST_H
#define BLACKLIST_H
uint32_t blacklist_lookup_index(uint64_t index);
int blacklist_is_allowed(uint32_t s_addr);
void blacklist_prefix(char *ip, int prefix_len);
void whitelist_prefix(char *ip, int prefix_len);
int blacklist_init_from_files(char *whitelist, char*blacklist);
int blacklist_init(char *whitelist, char *blacklist,
char **whitelist_entries,
size_t whitelist_entries_len,
char **blacklist_entries,
size_t blacklist_entries_len);
uint64_t blacklist_count_allowed();
uint64_t blacklist_count_not_allowed();

255
lib/constraint.c
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@ -50,16 +50,19 @@ typedef struct node {
struct node *l;
struct node *r;
value_t value;
uint64_t count;
} node_t;
// As an optimization, we precompute lookups for every prefix of this
// length:
#define RADIX_LENGTH 16
#define RADIX_LENGTH 20
struct _constraint {
node_t *root; // root node of the tree
node_t **radix; // array of nodes for every RADIX_LENGTH prefix
int optimized; // is radix populated and up-to-date?
uint32_t *radix; // array of prefixes (/RADIX_LENGTH) that are painted paint_value
size_t radix_len; // number of prefixes in radix array
int painted; // have we precomputed counts for each node?
value_t paint_value; // value for which we precomputed counts
};
// Tree operations respect the invariant that every node that isn't a
@ -150,7 +153,7 @@ void constraint_set(constraint_t *con, uint32_t prefix, int len, value_t value)
{
assert(con);
_set_recurse(con->root, prefix, len, value);
con->optimized = 0;
con->painted = 0;
}
// Return the value pertaining to an address, according to the tree
@ -176,67 +179,88 @@ static int _lookup_ip(node_t *root, uint32_t address)
// Return the value pertaining to an address.
// (Note: address must be in host byte order.)
int constraint_lookup_ip(constraint_t *con, uint32_t address)
value_t constraint_lookup_ip(constraint_t *con, uint32_t address)
{
assert(con);
if (con->optimized) {
// Use radix optimization
node_t *node = con->radix[address >> (32 - RADIX_LENGTH)];
if (IS_LEAF(node)) {
return node->value;
}
return _lookup_ip(node, address << RADIX_LENGTH);
} else {
// Do a full lookup using the tree
log_trace("constraint", "Unoptimized lookup");
return _lookup_ip(con->root, address);
}
// Return the nth painted IP address.
static int _lookup_index(node_t *root, uint64_t n)
{
assert(root);
node_t *node = root;
uint32_t ip = 0;
uint32_t mask = 0x80000000;
for (;;) {
if (IS_LEAF(node)) {
return ip | n;
}
if (n < node->l->count) {
node = node->l;
} else {
n -= node->l->count;
node = node->r;
ip |= mask;
}
mask >>= 1;
}
}
// For a given value, return the IP address with zero-based index n.
// (i.e., if there are three addresses with value 0xFF, looking up index 1
// will return the second one).
// Note that the tree must have been previously painted with this value.
uint32_t constraint_lookup_index(constraint_t *con, uint64_t index, value_t value)
{
assert(con);
if (!con->painted || con->paint_value != value) {
constraint_paint_value(con, value);
}
uint64_t radix_idx = index / (1 << (32 - RADIX_LENGTH));
if (radix_idx < con->radix_len) {
// Radix lookup
uint32_t radix_offset = index % (1 << (32 - RADIX_LENGTH)); // TODO: bitwise maths
return con->radix[radix_idx] | radix_offset;
}
// Otherwise, do the "slow" lookup in tree.
// Note that tree counts do NOT include things in the radix,
// so we subtract these off here.
index -= con->radix_len * (1 << (32 - RADIX_LENGTH));
assert(index < con->root->count);
return _lookup_index(con->root, index);
}
// Implement count_ips by recursing on halves of the tree. Size represents
// the number of addresses in a prefix at the current level of the tree.
static uint64_t _count_ips_recurse(node_t *node, value_t value, uint64_t size)
// If paint is specified, each node will have its count set to the number of
// leaves under it set to value.
// If exclude_radix is specified, the number of addresses will exlcude prefixes
// that are a /RADIX_LENGTH or larger
static uint64_t _count_ips_recurse(node_t *node, value_t value, uint64_t size, int paint, int exclude_radix)
{
assert(node);
uint64_t n;
if (IS_LEAF(node)) {
if (node->value == value) {
return size;
n = size;
// Exclude prefixes already included in the radix
if (exclude_radix && size >= (1 << (32 -RADIX_LENGTH))) {
n = 0;
}
} else {
return 0;
n = 0;
}
} else {
n = _count_ips_recurse(node->l, value, size >> 1, paint, exclude_radix) +
_count_ips_recurse(node->r, value, size >> 1, paint, exclude_radix);
}
return _count_ips_recurse(node->l, value, size >> 1) +
_count_ips_recurse(node->r, value, size >> 1);
}
// Return the number of addresses that have a given value.
uint64_t constraint_count_ips(constraint_t *con, value_t value)
{
assert(con);
return _count_ips_recurse(con->root, value, (uint64_t)1 << 32);
}
// Initialize the tree.
// All addresses will initally have the given value.
constraint_t* constraint_init(value_t value)
{
log_trace("constraint", "Initializing");
constraint_t* con = malloc(sizeof(constraint_t));
con->root = _create_leaf(value);
con->radix = calloc(sizeof(node_t *), 1 << RADIX_LENGTH);
assert(con->radix);
con->optimized = 0;
return con;
}
// Deinitialize and free the tree.
void constraint_free(constraint_t *con)
{
assert(con);
log_trace("constraint", "Cleaning up");
_destroy_subtree(con->root);
free(con->radix);
free(con);
if (paint) {
node->count = n;
}
return n;
}
// Return a node that determines the values for the addresses with
@ -250,8 +274,9 @@ static node_t* _lookup_node(node_t *root, uint32_t prefix, int len)
node_t *node = root;
uint32_t mask = 0x80000000;
int i;
for (int i=0; i < len; i++) {
for (i=0; i < len; i++) {
if (IS_LEAF(node)) {
return node;
}
@ -265,21 +290,66 @@ static node_t* _lookup_node(node_t *root, uint32_t prefix, int len)
return node;
}
// After values have been set, precompute prefix lookups.
void constraint_optimize(constraint_t *con)
// For each node, precompute the count of leaves beneath it set to value.
// Note that the tree can be painted for only one value at a time.
void constraint_paint_value(constraint_t *con, value_t value)
{
assert(con);
if (con->optimized) {
return;
}
log_trace("constraint", "Optimizing constraints");
for (uint32_t i=0; i < (1 << RADIX_LENGTH); i++) {
log_trace("constraint", "Painting value %lu", value);
// Paint everything except what we will put in radix
_count_ips_recurse(con->root, value, (uint64_t)1 << 32, 1, 1);
// Fill in the radix array with a list of addresses
uint32_t i;
con->radix_len = 0;
for (i=0; i < (1 << RADIX_LENGTH); i++) {
uint32_t prefix = i << (32 - RADIX_LENGTH);
con->radix[i] = _lookup_node(con->root, prefix, RADIX_LENGTH);
node_t *node = _lookup_node(con->root, prefix, RADIX_LENGTH);
if (IS_LEAF(node) && node->value == value) {
// Add this prefix to the radix
con->radix[con->radix_len++] = prefix;
}
con->optimized = 1;
}
log_debug("constraint", "%lu IPs in radix array, %lu IPs in tree",
con->radix_len * (1 << (32 - RADIX_LENGTH)), con->root->count);
con->painted = 1;
con->paint_value = value;
}
// Return the number of addresses that have a given value.
uint64_t constraint_count_ips(constraint_t *con, value_t value)
{
assert(con);
if (con->painted && con->paint_value == value) {
return con->root->count + con->radix_len * (1 << (32 - RADIX_LENGTH));
} else {
return _count_ips_recurse(con->root, value, (uint64_t)1 << 32, 0, 0);
}
}
// Initialize the tree.
// All addresses will initally have the given value.
constraint_t* constraint_init(value_t value)
{
log_trace("constraint", "Initializing");
constraint_t* con = malloc(sizeof(constraint_t));
con->root = _create_leaf(value);
con->radix = calloc(sizeof(uint32_t), 1 << RADIX_LENGTH);
assert(con->radix);
con->painted = 0;
return con;
}
// Deinitialize and free the tree.
void constraint_free(constraint_t *con)
{
assert(con);
log_trace("constraint", "Cleaning up");
_destroy_subtree(con->root);
free(con->radix);
free(con);
}
/*
int main(void)
@ -317,68 +387,3 @@ int main(void)
}
*/
/*
static int init(constraint_t *con, char *file, const char *name, value_t value)
{
FILE *fp;
char line[1000];
int blocked = 0;
fp = fopen(file, "r");
if (fp == NULL) {
log_fatal(name, "Unable to open %s file: %s: %s",
name, file, strerror(errno));
}
while (fgets(line, sizeof(line), fp) != NULL) {
char *comment = strchr(line, '#');
if (comment) {
*comment = '\0';
}
char ip[33];
if ((sscanf(line, "%32s", ip)) == EOF) {
continue;
}
int prefix_len;
char *slash = strchr(ip, '/');
if (slash == NULL) {
log_fatal(name,
"Unable to parse %s file: %s",
name, file);
}
// split apart network and prefix length
*slash = '\0';
prefix_len = atoi(&slash[1]);
constraint_set(con, ntohl(inet_addr(ip)), prefix_len, value);
blocked++;
}
fclose(fp);
return 0;
}
void main()
{
log_init(stderr, LOG_TRACE);
constraint_t *con = constraint_init(1);
init(con, "blacklist.prefixes", "blacklist", 0);
//constraint_optimize(con);
printf("count(0)=%lu\n", constraint_count_ips(con, 0));
printf("count(1)=%lu\n", constraint_count_ips(con, 1));
uint32_t i=0, count=0;
do {
if (constraint_lookup_ip(con, i))
count++;
} while (++i != 0);
printf("derived count(1)=%u\n", count);
constraint_free(con);
}
*/

9
lib/constraint.h
View File

@ -1,14 +1,17 @@
#ifndef CONSTRAINT_H
#define CONSTRAINT_H
#include <stdint.h>
typedef struct _constraint constraint_t;
typedef int value_t;
typedef unsigned int value_t;
constraint_t* constraint_init(value_t value);
void constraint_free(constraint_t *con);
void constraint_set(constraint_t *con, uint32_t prefix, int len, value_t value);
void constraint_optimize(constraint_t *con);
int constraint_lookup_ip(constraint_t *con, uint32_t address);
value_t constraint_lookup_ip(constraint_t *con, uint32_t address);
uint64_t constraint_count_ips(constraint_t *con, value_t value);
uint32_t constraint_lookup_index(constraint_t *con, uint64_t index, value_t value);
void constraint_paint_value(constraint_t *con, value_t value);
#endif //_CONSTRAINT_H

54
lib/pbm.c Normal file
View File

@ -0,0 +1,54 @@
#include <assert.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include "logger.h"
#define NUM_VALUES 0xFFFFFFFF
#define PAGE_SIZE 0xFFFF
#define NUM_PAGES (NUM_VALUES / PAGE_SIZE)
#define SIZE (8*sizeof(uint64_t))
uint64_t** pbm_init(void)
{
uint64_t** retv = calloc(NUM_PAGES, sizeof(void*));
if (!retv) {
log_fatal("pbm", "unable to allocate memory for base page table");
}
return retv;
}
static int bm_check(uint64_t *bm, uint32_t v)
{
return bm[v/SIZE] & (1<< (v % SIZE));
}
static void bm_set(uint64_t *bm, uint32_t v)
{
bm[v/SIZE] |= (1 << (v % SIZE));
}
int pbm_check(uint64_t **b, uint32_t v)
{
uint32_t top = v >> 16;
uint32_t bottom = v & PAGE_SIZE;
return b[top] && bm_check(b[top], bottom);
}
void pbm_set(uint64_t **b, uint32_t v)
{
uint32_t top = v >> 16;
uint32_t bottom = v & PAGE_SIZE;
if (!b[top]) {
uint64_t *bm = malloc(PAGE_SIZE);
if (!bm) {
log_fatal("bpm", "unable to allocate memory for new bitmap page");
}
memset(bm, 0, PAGE_SIZE);
b[top] = bm;
}
bm_set(b[top], bottom);
}

5
lib/pbm.h Normal file
View File

@ -0,0 +1,5 @@
#include <stdint.h>
uint64_t** pbm_init(void);
int pbm_check(uint64_t **b, uint32_t v);
void pbm_set(uint64_t **b, uint32_t v);

79
lib/redis.c
View File

@ -6,16 +6,18 @@
* of the License at http://www.apache.org/licenses/LICENSE-2.0
*/
#include <string.h>
#include "redis.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "assert.h"
#include "logger.h"
#include <stdint.h>
#include <assert.h>
#include <hiredis/hiredis.h>
#define REDIS_UNIX_PATH "/tmp/redis.sock"
#include "logger.h"
#define REDIS_TIMEOUT 2
#undef MIN
@ -23,13 +25,74 @@
static redisContext *rctx;
static redisContext* redis_connect(void)
redisconf_t *redis_parse_connstr(char *connstr)
{
redisconf_t *retv = malloc(sizeof(redisconf_t));
if (!strncmp("tcp://", connstr, 6)) {
char *servername = malloc(strlen(connstr));
assert(servername);
char *list_name = malloc(strlen(connstr));
assert(list_name);
uint32_t port;
if (sscanf(connstr, "tcp://%[^:]:%u/%s", servername,
&port, list_name) != 3) {
log_fatal("redis", "unable to parse redis connection string. This "
"should be of the form tcp://server:port/list-name "
"for TCP connections. All fields are required.");
}
retv->type = T_TCP;
retv->server = servername;
retv->port = port;
retv->list_name = list_name;
retv->path = NULL;
} else if (!strncmp("local://", connstr, 8)) {
// looking for something along the lines of
// local:///tmp/redis.sock/list-name
char *path = malloc(strlen(connstr));
assert(path);
char *list_name = malloc(strlen(connstr));
assert(list_name);
connstr = connstr + (size_t) 8;
char *listname = strrchr(connstr, '/') + (size_t) 1;
connstr[strrchr(connstr, '/') - connstr] = '\0';
strcpy(path, connstr);
strcpy(list_name, listname);
retv->type = T_LOCAL;
retv->list_name = list_name;
retv->path = path;
retv->server = NULL;
retv->port = 0;
} else {
log_fatal("redis", "unable to parse connection string. does not begin with "
"local:// or tcp:// as expected");
}
return retv;
}
static redisContext* redis_connect(char *connstr)
{
redisconf_t *c;
// handle old behavior where we only connected to a specific
// socket that we #defined.
if (!connstr) {
c = malloc(sizeof(redisconf_t));
assert(c);
c->type = T_LOCAL;
c->path = "/tmp/redis.sock";
} else {
c = redis_parse_connstr(connstr);
assert(c);
}
struct timeval timeout;
timeout.tv_sec = REDIS_TIMEOUT;
timeout.tv_usec = 0;
return (redisContext*) redisConnectUnixWithTimeout(REDIS_UNIX_PATH,
if (c->type == T_LOCAL) {
return (redisContext*) redisConnectUnixWithTimeout(c->path,
timeout);
} else {
return (redisContext*) redisConnectWithTimeout(c->server,
c->port, timeout);
}
}
static int chkerr(redisReply *reply)
@ -47,9 +110,9 @@ static int chkerr(redisReply *reply)
return 0;
}
int redis_init(void)
int redis_init(char *connstr)
{
rctx = redis_connect();
rctx = redis_connect(connstr);
if (!rctx) {
return -1;
}

15
lib/redis.h
View File

@ -5,7 +5,20 @@
#ifndef REDIS_ZHELPERS_H
#define REDIS_ZHELPERS_H
int redis_init(void);
#define T_TCP 0
#define T_LOCAL 1
typedef struct redisconf {
int type;
char *path;
char *server;
uint16_t port;
char *list_name;
} redisconf_t;
redisconf_t *redis_parse_connstr(char *connstr);
int redis_init(char*);
int redis_close(void);

40
lib/stack.c Normal file
View File

@ -0,0 +1,40 @@
#include "stack.h"
#include "../lib/xalloc.h"
#include <stdlib.h>
struct stack {
size_t max_size;
size_t cur_size;
void** arr;
};
stack_t* alloc_stack(size_t size)
{
stack_t* stack = xmalloc(sizeof(stack_t));
stack->arr = xcalloc(size, sizeof(void*));
stack->max_size = size;
stack->cur_size = 0;
return stack;
}
void free_stack(stack_t* stack)
{
xfree(stack->arr);
xfree(stack);
}
void push(stack_t* stack, void* elt)
{
if (stack->cur_size == stack->max_size) {
stack->max_size *= 2;
xrealloc(stack->arr, stack->max_size);
}
stack->arr[stack->cur_size++] = elt;
}
void* pop(stack_t* stack)
{
void* res = stack->arr[--stack->cur_size];
return res;
}

15
lib/stack.h Normal file
View File

@ -0,0 +1,15 @@
#ifndef ZMAP_STACK_H
#define ZMAP_STACK_H
#include <stddef.h>
struct stack;
typedef struct stack stack_t;
stack_t* alloc_stack(size_t size);
void free_stack(stack_t* stack);
void push(stack_t* stack, void* elt);
void* pop(stack_t* stack);
#endif /* ZMAP_STACK_H */

44
lib/xalloc.c Normal file
View File

@ -0,0 +1,44 @@
#include "xalloc.h"
#include "../lib/logger.h"
#include <stdlib.h>
void die() __attribute__((noreturn));
void* xcalloc(size_t count, size_t size)
{
void* res = calloc(count, size);
if (res == NULL) {
die();
}
return res;
}
void xfree(void *ptr)
{
free(ptr);
}
void* xmalloc(size_t size)
{
void* res = malloc(size);
if (res == NULL) {
die();
}
return res;
}
void* xrealloc(void *ptr, size_t size)
{
void* res = realloc(ptr, size);
if (res == NULL) {
die();
}
return res;
}
void die()
{
log_fatal("zmap", "Out of memory");
}

14
lib/xalloc.h Normal file
View File

@ -0,0 +1,14 @@
#ifndef ZMAP_ALLOC_H
#define ZMAP_ALLOC_H
#include <stddef.h>
void* xcalloc(size_t count, size_t size);
void xfree(void *ptr);
void* xmalloc(size_t size);
void* xrealloc(void *ptr, size_t size);
#endif

4
src/.gitignore vendored Normal file
View File

@ -0,0 +1,4 @@
lexer.c
lexer.h
parser.c
parser.h

107
src/CMakeLists.txt Normal file
View File

@ -0,0 +1,107 @@
include_directories(
"${CMAKE_CURRENT_BINARY_DIR}"
${PROJECT_SOURCE_DIR}/lib
${PROJECT_SOURCE_DIR}/src
${PROJECT_SOURCE_DIR}/src/output_modules
)
SET(LIB_SOURCES
${PROJECT_SOURCE_DIR}/lib/blacklist.c
${PROJECT_SOURCE_DIR}/lib/constraint.c
${PROJECT_SOURCE_DIR}/lib/logger.c
${PROJECT_SOURCE_DIR}/lib/pbm.c
${PROJECT_SOURCE_DIR}/lib/random.c
${PROJECT_SOURCE_DIR}/lib/rijndael-alg-fst.c
${PROJECT_SOURCE_DIR}/lib/stack.c
${PROJECT_SOURCE_DIR}/lib/xalloc.c
)
# ADD YOUR PROBE MODULE HERE
SET(EXTRA_PROBE_MODULES
)
# ADD YOUR OUTPUT MODULE HERE
SET(EXTRA_OUTPUT_MODULES
)
SET(OUTPUT_MODULE_SOURCES
output_modules/module_csv.c
output_modules/output_modules.c
)
SET(PROBE_MODULE_SOURCES
probe_modules/module_icmp_echo.c
probe_modules/module_tcp_synscan.c
probe_modules/module_udp.c
probe_modules/packet.c
probe_modules/probe_modules.c
)
SET(SOURCES
aesrand.c
cyclic.c
expression.c
fieldset.c
filter.c
get_gateway.c
monitor.c
recv.c
send.c
state.c
validate.c
zmap.c
zopt_compat.c
"${CMAKE_CURRENT_BINARY_DIR}/zopt.h"
"${CMAKE_CURRENT_BINARY_DIR}/lexer.c"
"${CMAKE_CURRENT_BINARY_DIR}/parser.c"
${EXTRA_PROBE_MODULES}
${EXTRA_OUTPUT_MODULES}
${PROBE_MODULE_SOURCES}
${OUTPUT_MODULE_SOURCES}
${LIB_SOURCES}
)
if (WITH_JSON)
SET(SOURCES ${SOURCES} output_modules/module_json.c)
endif()
if (WITH_REDIS)
SET(SOURCES ${SOURCES} ${PROJECT_SOURCE_DIR}/lib/redis.c output_modules/module_redis.c)
endif()
add_custom_command(OUTPUT zopt.h
COMMAND gengetopt -C --no-help --no-version --unamed-opts=SUBNETS -i "${CMAKE_CURRENT_SOURCE_DIR}/zopt.ggo" -F "${CMAKE_CURRENT_BINARY_DIR}/zopt"
)
add_custom_command(OUTPUT lexer.c
COMMAND flex -o "${CMAKE_CURRENT_BINARY_DIR}/lexer.c" --header-file="${CMAKE_CURRENT_BINARY_DIR}/lexer.h" lexer.l
)
add_custom_command(OUTPUT parser.c
COMMAND byacc -d -o parser.c parser.y
)
add_executable(zmap ${SOURCES})
target_link_libraries(
zmap
pcap gmp m
${REDIS_LIBS}
${JSON_LIBRARIES}
)
# Install binary
install(
TARGETS
zmap
RUNTIME DESTINATION sbin
)
# Install Manpages
install(
FILES
zmap.1
DESTINATION share/man/man1
)

116
src/Makefile
View File

@ -1,116 +0,0 @@
#<<<<<<< HEAD
CC=gcc
#CC=clang
#CFLAGS=-Wall -pedantic -Wextra -std=gnu99 -I../lib -I./ -Ioutput_modules -O2 -g
#wbk makefile hack to get rolling with C port. Fix later lol
CFLAGS=-Wall -pedantic -Wextra -std=gnu99 -I../lib -I./ -Ioutput_modules \
-O2 -g -D__FREEBSD__ -D__FREEBSD_INCLUDES__ -D__FREEBSD_PTHREADS__ -DZMAP_PCAP_INJECT
LDFLAGS=-g -pthread
LDLIBS= -lpcap -lgmp -lm
#=======
#INCLUDE+=-I../lib -I./ -Ioutput_modules
#LDFLAGS+=-pthread
#LDLIBS+=-lpcap -lgmp -lm
#>>>>>>> 5cd6f3294cb4f6ddf711b4c42d72893989a9dc3d
TARGETS=zmap
VPATH=../lib:output_modules:probe_modules
PREFIX=/usr/local
#wbk
LIBDIR=/usr/local/lib
INSTALL=install
INSTALLDATA=install -m 644
mandir=$(PREFIX)/man/man1/
oldmanfile=/usr/share/man/man1/zmap.1
bindir=$(PREFIX)/sbin
# Hardening and warnings for building with gcc
#<<<<<<< HEAD
#M aybe add -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
#-Wold-style-definition -Wswitch-enum
GCCWARNINGS = -Wall -fno-strict-aliasing -W -Wfloat-equal -Wundef \
-Wpointer-arith \
-Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment \
-Wformat=2 -Wwrite-strings -Wredundant-decls \
-Wnested-externs -Wbad-function-cast -Winit-self \
-Wmissing-field-initializers \
-Waddress -Wmissing-noreturn -Wnormalized=id \
-Woverride-init -Wstrict-overflow=1 -Wextra \
-Wstack-protector -Wformat -Wformat-security -Wpointer-sign -Wno-format-nonliteral -Wno-format-y2k
GCCHARDENING=-D_FORTIFY_SOURCE=2 -fstack-protector-all -fwrapv -fPIC --param ssp-buffer-size=1
# clang doesn't like this
#LDHARDENING=-z relro -z now
EXTRACFLAGS=-g -O2 $(EXTRA_CFLAGS) $(GCCHARDENING) $(GCCWARNINGS)
#=======
# Maybe add -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
#GCCWARNINGS = -Wall -Wformat=2 -Wno-format-nonliteral\
#-pedantic -fno-strict-aliasing \
#-Wextra \
#-Wfloat-equal -Wundef -Wwrite-strings -Wredundant-decls \
#-Wnested-externs -Wbad-function-cast -Winit-self \
#-Wmissing-noreturn -Wnormalized=id \
#-Wstack-protector
#GCCHARDENING=-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-all -fwrapv -fPIC --param ssp-buffer-size=1
#LDHARDENING=-z relro -z now
#EXTRACFLAGS=-std=gnu99 -g -O2 $(GCCHARDENING) $(GCCWARNINGS) $(EXTRA_CFLAGS) -Werror
#>>>>>>> 5cd6f3294cb4f6ddf711b4c42d72893989a9dc3d
EXTRALDFLAGS= $(LDHARDENING)
CFLAGS+=$(INCLUDE) $(EXTRACFLAGS)
LDFLAGS+=$(EXTRALDFLAGS)
LDFLAGS+=-L$(LIBDIR)
probemodules=module_tcp_synscan.o module_icmp_echo.o module_udp.o #ADD YOUR PROBE MODULE HERE
outputmodules= module_csv.o #ADD YOUR OUTPUT MODULE HERE
objects=constraint.o blacklist.o cyclic.o logger.o send.o recv.o state.o monitor.o zopt_compat.o zmap.o random.o output_modules.o packet.o probe_modules.o ${probemodules} ${outputmodules} validate.o rijndael-alg-fst.o get_gateway.o aesrand.o fieldset.o
redis_objects=module_redis.o redis.o
ifeq ($(REDIS), true)
LDLIBS+=-lhiredis
objects+=$(redis_objects)
CFLAGS+=-DREDIS
endif
ifeq ($(JSON), true)
LDLIBS+=$(shell pkg-config --libs json-c)
CFLAGS+=-DJSON $(shell pkg-config --cflags json-c)
objects+=module_json.o
endif
all: $(TARGETS)
$(TARGETS):
$(CC) $(CFLAGS) $(DFLAGS) $(LDFLAGS) $^ -o $@ $(LDLIBS)
zmap: $(objects)
zopt_compat.o: zopt.c
zopt.c zopt.h: zopt.ggo
gengetopt -C --no-help --no-version -i $^ -F $*
install: zmap
$(INSTALL) zmap $(bindir)/zmap
test -d /etc/zmap || (mkdir /etc/zmap && $(INSTALLDATA) ../conf/* /etc/zmap/)
test -f $(oldmanfile) && rm -f $(oldmanfile) && mandb -f $(oldmanfile) || /bin/true # remove old man page if it's there
test -d $(mandir) || mkdir -p $(mandir)
$(INSTALLDATA) ./zmap.1 $(mandir)
@echo "\n**************\nSuccess! ZMap is installed. Try running (as root):\nzmap -p 80 -N 10 -B 1M -o -\n**************"
uninstall:
test -f $(oldmanfile) && rm -f $(oldmanfile) && mandb -f $(oldmanfile) || /bin/true # remove old man page if it's there
test -f $(mandir)/zmap.1 && rm -f $(mandir)/zmap.1 && mandb -f $(mandir)/zmap.1 || /bin/true # remove current man page if it's there
rm -f $(bindir)/zmap
clean:
-rm -f $(objects) $(redis_objects) $(TARGETS)
.PHONY: install clean

116
src/cyclic.c
View File

@ -61,28 +61,65 @@
#include "aesrand.h"
#define LSRC "cyclic"
#define PRIME 4294967311 // 2^32 + 15
#define KNOWN_PRIMROOT 3
// distinct prime factors of 2^32 + 15
static const uint64_t psub1_f[] = { 2, 3, 5, 131, 364289 };
typedef struct cyclic_group {
uint64_t prime;
uint64_t known_primroot;
size_t num_prime_factors; // number of unique prime factors of (prime-1)
uint64_t prime_factors[10]; // unique prime factors of (prime-1)
} cyclic_group_t;
// selected primitive root that we'll use as the generator
// We will pick the first cyclic group from this list that is
// larger than the number of IPs in our whitelist. E.g. for an
// entire Internet scan, this would be cyclic32
// Note: this list should remain ordered by size (primes) ascending.
static cyclic_group_t groups[] = {
{ // 2^16 + 1
.prime = 65537,
.known_primroot = 3,
.prime_factors = {2},
.num_prime_factors = 1
},
{ // 2^24 + 43
.prime = 16777259,
.known_primroot = 2,
.prime_factors = {2, 23, 103, 3541},
.num_prime_factors = 4
},
{ // 2^28 + 3
.prime = 268435459,
.known_primroot = 2,
.prime_factors = {2, 3, 19, 87211},
.num_prime_factors = 4
},
{ // 2^32 + 15
.prime = 4294967311,
.known_primroot = 3,
.prime_factors = {2, 3, 5, 131, 364289},
.num_prime_factors = 5
}
};
// selected prime/primitive root that we'll use as the generator
static uint64_t prime = 0;
static uint64_t primroot = 0;
static uint64_t current = 0;
static uint64_t num_addrs = 0;
#define COPRIME 1
#define NOT_COPRIME 0
// check whether two integers are coprime
static int check_coprime(uint64_t check)
static int check_coprime(uint64_t check, const cyclic_group_t *group)
{
for (unsigned i=0; i < sizeof(psub1_f)/sizeof(psub1_f[0]); i++) {
if (psub1_f[i] > check && !(psub1_f[i] % check)) {
for (unsigned i=0; i < group->num_prime_factors; i++) {
if (group->prime_factors[i] > check && !(group->prime_factors[i] % check)) {
return NOT_COPRIME;
} else if (psub1_f[i] < check && !(check % psub1_f[i])) {
} else if (group->prime_factors[i] < check && !(check % group->prime_factors[i])) {
return NOT_COPRIME;
} else if (psub1_f[i] == check) {
} else if (group->prime_factors[i] == check) {
return NOT_COPRIME;
}
}
@ -90,18 +127,18 @@ static int check_coprime(uint64_t check)
}
// find gen of cyclic group Z modulo PRIME
static uint64_t find_primroot(void)
static uint64_t find_primroot(const cyclic_group_t *group)
{
// what luck, rand() returns a uint32_t!
uint32_t candidate = (uint32_t) aesrand_getword() & 0xFFFF;
while(check_coprime(candidate) != COPRIME) {
uint32_t candidate = (uint32_t) aesrand_getword() & 0xFFFFFFFF;
while(check_coprime(candidate, group) != COPRIME) {
++candidate;
}
// pre-modded result is gigantic so use GMP
mpz_t base, power, prime, primroot;
mpz_init_set_d(base, (double) KNOWN_PRIMROOT);
mpz_init_set_d(base, (double) group->known_primroot);
mpz_init_set_d(power, (double) candidate);
mpz_init_set_d(prime, (double) PRIME);
mpz_init_set_d(prime, (double) group->prime);
mpz_init(primroot);
mpz_powm(primroot, base, power, prime);
uint64_t retv = (uint64_t) mpz_get_ui(primroot);
@ -115,6 +152,33 @@ static uint64_t find_primroot(void)
int cyclic_init(uint32_t primroot_, uint32_t current_)
{
assert(!(!primroot_ && current_));
// Initialize blacklist
if (blacklist_init(zconf.whitelist_filename, zconf.blacklist_filename,
zconf.destination_cidrs, zconf.destination_cidrs_len,
NULL, 0)) {
return -1;
}
num_addrs = blacklist_count_allowed();
if (!num_addrs) {
log_error("blacklist", "no addresses are eligible to be scanned in the "
"current configuration. This may be because the "
"blacklist being used by ZMap (%s) prevents "
"any addresses from receiving probe packets.",
zconf.blacklist_filename
);
exit(EXIT_FAILURE);
}
const cyclic_group_t *cur_group = NULL;
for (uint32_t i=0; i<sizeof(groups)/sizeof(groups[0]); i++) {
if (groups[i].prime > num_addrs) {
cur_group = &groups[i];
log_debug("cyclic", "using prime %lu, known_primroot %lu",
cur_group->prime, cur_group->known_primroot);
prime = groups[i].prime;
break;
}
}
if (zconf.use_seed) {
aesrand_init(zconf.seed+1);
@ -123,17 +187,17 @@ int cyclic_init(uint32_t primroot_, uint32_t current_)
}
if (!primroot_) {
do {
primroot = find_primroot();
primroot = find_primroot(cur_group);
} while (primroot >= (1LL << 32));
log_debug(LSRC, "primitive root: %lld", primroot);
current = (uint32_t) aesrand_getword() & 0xFFFF;
current = (uint32_t) aesrand_getword() & 0xFFFFFFFF;
log_debug(LSRC, "starting point: %lld", current);
} else {
primroot = primroot_;
log_debug(LSRC, "primitive root %lld specified by caller",
primroot);
if (!current_) {
current = (uint32_t) aesrand_getword() & 0xFFFF;
current = (uint32_t) aesrand_getword() & 0xFFFFFFFF;
log_debug(LSRC, "no cyclic starting point, "
"selected random startpoint: %lld",
current);
@ -144,11 +208,6 @@ int cyclic_init(uint32_t primroot_, uint32_t current_)
}
}
zconf.generator = primroot;
if (blacklist_init_from_files(zconf.whitelist_filename,
zconf.blacklist_filename)) {
return -1;
}
// make sure current is an allowed ip
cyclic_get_next_ip();
@ -157,7 +216,7 @@ int cyclic_init(uint32_t primroot_, uint32_t current_)
uint32_t cyclic_get_curr_ip(void)
{
return (uint32_t) current;
return (uint32_t) blacklist_lookup_index(current-1);
}
uint32_t cyclic_get_primroot(void)
@ -169,7 +228,7 @@ static inline uint32_t cyclic_get_next_elem(void)
{
do {
current *= primroot;
current %= PRIME;
current %= prime;
} while (current >= (1LL << 32));
return (uint32_t) current;
}
@ -178,11 +237,10 @@ uint32_t cyclic_get_next_ip(void)
{
while (1) {
uint32_t candidate = cyclic_get_next_elem();
if (!blacklist_is_allowed(candidate)) {
zsend.blacklisted++;
} else {
return candidate;
if (candidate-1 < num_addrs) {
return blacklist_lookup_index(candidate-1);
}
zsend.blacklisted++;
}
}

162
src/expression.c Normal file
View File

@ -0,0 +1,162 @@
#include "expression.h"
#include "fieldset.h"
#include "../lib/xalloc.h"
/* Static helper functions */
static node_t* alloc_node();
static int eval_gt_node(node_t *node, fieldset_t *fields);
static int eval_lt_node(node_t *node, fieldset_t *fields);
static int eval_eq_node(node_t *node, fieldset_t *fields);
static int eval_lt_eq_node(node_t *node, fieldset_t *fields);
static int eval_gt_eq_node(node_t *node, fieldset_t *fields);
static node_t* alloc_node()
{
node_t *node = xmalloc(sizeof(node_t));
memset(node, 0, sizeof(node_t));
return node;
}
static int eval_gt_node(node_t *node, fieldset_t *fields)
{
int index = node->left_child->value.field.index;
uint64_t expected = node->right_child->value.int_literal;
uint64_t actual = fs_get_uint64_by_index(fields, index);
return (actual > expected);
}
static int eval_lt_node(node_t *node, fieldset_t *fields)
{
int index = node->left_child->value.field.index;
uint64_t expected = node->right_child->value.int_literal;
uint64_t actual = fs_get_uint64_by_index(fields, index);
return (actual < expected);
}
static int eval_eq_node(node_t *node, fieldset_t *fields)
{
node_t *literal = node->right_child;
int index = node->left_child->value.field.index;
char *expected, *actual;
switch (literal->type) {
case STRING:
expected = literal->value.string_literal;
actual = fs_get_string_by_index(fields, index);
return (strcmp(expected, actual) == 0);
break;
case INT:
return (fs_get_uint64_by_index(fields, index) == literal->value.int_literal);
break;
default:
printf("wat\n");
break;
}
return 0;
}
static int eval_lt_eq_node(node_t *node, fieldset_t *fields)
{
return !(eval_gt_node(node, fields));
}
static int eval_gt_eq_node(node_t *node, fieldset_t *fields)
{
return !(eval_lt_node(node, fields));
}
/* Exposed functions */
node_t* make_op_node(enum operation op)
{
node_t* node = alloc_node();
node->type = OP;
node->value.op = op;
return node;
}
node_t* make_field_node(char *fieldname)
{
node_t *node = alloc_node();
node->type = FIELD;
node->value.field.fieldname = fieldname;
return node;
}
node_t* make_string_node(char *literal)
{
node_t *node = alloc_node();
node->type = STRING;
node->value.string_literal = literal;
return node;
}
node_t* make_int_node(int literal)
{
node_t *node = alloc_node();
node->type = INT;
node->value.int_literal = literal;
return node;
}
int evaluate_expression(node_t *root, fieldset_t *fields)
{
if (!root) return 1;
switch (root->type) { /* XXX Not sure if runs */
case FIELD:
case STRING:
case INT:
return 1;
case OP:
break;
}
switch (root->value.op) {
case GT:
return eval_gt_node(root, fields);
case LT:
return eval_lt_node(root, fields);
case EQ:
return eval_eq_node(root, fields);
case NEQ:
return (!eval_eq_node(root, fields));
case LT_EQ:
return eval_lt_eq_node(root, fields);
case GT_EQ:
return eval_gt_eq_node(root, fields);
case AND:
return (evaluate_expression(root->left_child, fields)
&& evaluate_expression(root->right_child, fields));
case OR:
return (evaluate_expression(root->left_child, fields)
|| evaluate_expression(root->right_child, fields));
}
return 0;
}
void print_expression(node_t *root)
{
if (!root) return;
printf("%s", "( ");
print_expression(root->left_child);
switch (root->type) {
case OP:
printf(" %i ", root->value.op);
break;
case FIELD:
printf(" (%s", root->value.field.fieldname);
break;
case STRING:
printf("%s) ", root->value.string_literal);
break;
case INT:
printf(" %llu) ", (long long unsigned) root->value.int_literal);
break;
default:
break;
}
print_expression(root->right_child);
printf("%s", " )");
}

50
src/expression.h Normal file
View File

@ -0,0 +1,50 @@
#ifndef ZMAP_TREE_H
#define ZMAP_TREE_H
#include "fieldset.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
enum operation {
GT, LT, EQ, NEQ, AND, OR, LT_EQ, GT_EQ
};
enum node_type {
OP, FIELD, STRING, INT
};
struct field_id {
int index;
char *fieldname;
};
union node_value {
struct field_id field;
char *string_literal;
uint64_t int_literal;
enum operation op;
};
typedef struct node {
struct node *left_child;
struct node *right_child;
enum node_type type;
union node_value value;
} node_t;
node_t* make_op_node(enum operation op);
node_t* make_field_node(char *fieldname);
node_t* make_string_node(char *literal);
node_t* make_int_node(int literal);
int evaluate_expression(node_t *root, fieldset_t *fields);
void print_expression(node_t *root);
#endif /* ZMAP_TREE_H */

42
src/fieldset.c
View File

@ -38,7 +38,7 @@ fieldset_t *fs_new_fieldset(void)
/* wbk TODO: Might have some subtle issues here on 32 bit architectures. Getting
compiler warnings about casting void* to uint64_t */
static inline void fs_add_word(fieldset_t *fs, const char *name, int type,
int free_, size_t len, void *value)
int free_, size_t len, field_val_t value)
{
if (fs->len + 1 >= MAX_FIELDS) {
log_fatal("fieldset", "out of room in fieldset");
@ -48,24 +48,24 @@ static inline void fs_add_word(fieldset_t *fs, const char *name, int type,
f->type = type;
f->name = name;
f->len = len;
f->value = (uint64_t) value;
f->value = value;
f->free_ = free_;
}
static void fs_modify_word(fieldset_t *fs, const char *name, int type,
int free_, size_t len, void *value)
int free_, size_t len, field_val_t value)
{
int i;
for (i=0; i<fs->len; i++) {
if (!strcmp(fs->fields[i].name, name)) {
if (fs->fields[i].free_) {
free((void*)fs->fields[i].value);
fs->fields[i].value = 0;
free(fs->fields[i].value.ptr);
fs->fields[i].value.ptr = NULL;
}
fs->fields[i].type = type;
fs->fields[i].free_ = free_;
fs->fields[i].len = len;
fs->fields[i].value = (uint64_t)value;
fs->fields[i].value = value;
return;
}
}
@ -74,55 +74,63 @@ static void fs_modify_word(fieldset_t *fs, const char *name, int type,
void fs_add_null(fieldset_t *fs, const char *name)
{
fs_add_word(fs, name, FS_NULL, 0, 0, NULL);
field_val_t val = { .ptr = NULL };
fs_add_word(fs, name, FS_NULL, 0, 0, val);
}
void fs_add_string(fieldset_t *fs, const char *name, char *value, int free_)
{
fs_add_word(fs, name, FS_STRING, free_, strlen(value), (void*) value);
field_val_t val = { .ptr = value };
fs_add_word(fs, name, FS_STRING, free_, strlen(value), val);
}
void fs_add_uint64(fieldset_t *fs, const char *name, uint64_t value)
{
fs_add_word(fs, name, FS_UINT64, 0, sizeof(uint64_t), (void*) value);
field_val_t val = { .num = value };
fs_add_word(fs, name, FS_UINT64, 0, sizeof(uint64_t), val);
}
void fs_add_binary(fieldset_t *fs, const char *name, size_t len,
void *value, int free_)
{
fs_add_word(fs, name, FS_BINARY, free_, len, value);
field_val_t val = { .ptr = value };
fs_add_word(fs, name, FS_BINARY, free_, len, val);
}
// Modify
void fs_modify_null(fieldset_t *fs, const char *name)
{
fs_modify_word(fs, name, FS_NULL, 0, 0, NULL);
field_val_t val = { .ptr = NULL };
fs_modify_word(fs, name, FS_NULL, 0, 0, val);
}
void fs_modify_string(fieldset_t *fs, const char *name, char *value, int free_)
{
fs_modify_word(fs, name, FS_STRING, free_, strlen(value), (void*) value);
field_val_t val = { .ptr = value };
fs_modify_word(fs, name, FS_STRING, free_, strlen(value), val);
}
void fs_modify_uint64(fieldset_t *fs, const char *name, uint64_t value)
{
fs_modify_word(fs, name, FS_UINT64, 0, sizeof(uint64_t), (void*) value);
field_val_t val = { .num = value };
fs_modify_word(fs, name, FS_UINT64, 0, sizeof(uint64_t), val);
}
void fs_modify_binary(fieldset_t *fs, const char *name, size_t len,
void *value, int free_)
{
fs_modify_word(fs, name, FS_BINARY, free_, len, value);
field_val_t val = { .ptr = value };
fs_modify_word(fs, name, FS_BINARY, free_, len, val);
}
uint64_t fs_get_uint64_by_index(fieldset_t *fs, int index)
{
return (uint64_t) fs->fields[index].value;
return (uint64_t) fs->fields[index].value.num;
}
char* fs_get_string_by_index(fieldset_t *fs, int index)
{
return (char*) fs->fields[index].value;
return (char*) fs->fields[index].value.ptr;
}
int fds_get_index_by_name(fielddefset_t *fds, char *name)
@ -143,7 +151,7 @@ void fs_free(fieldset_t *fs)
for (int i=0; i < fs->len; i++) {
field_t *f = &(fs->fields[i]);
if (f->free_) {
free((void*) f->value);
free(f->value.ptr);
}
}
free(fs);

7
src/fieldset.h
View File

@ -36,13 +36,18 @@ typedef struct fielddef_set {
int len;
} fielddefset_t;
typedef union field_val {
void *ptr;
uint64_t num;
} field_val_t;
// the internal field type used by fieldset
typedef struct field {
const char *name;
int type;
int free_;
size_t len;
uint64_t value;
union field_val value;
} field_t;
// data structure that is populated by the probe module

99
src/filter.c Normal file
View File

@ -0,0 +1,99 @@
#include "filter.h"
#include "state.h"
#include "lexer.h"
#include "parser.h"
#include "expression.h"
#include "../lib/logger.h"
#include <string.h>
extern int yyparse();
node_t *zfilter;
static int validate_node(node_t *node, fielddefset_t *fields)
{
int index, found = 0;
if (node->type == OP) {
// These end up getting validated later
if (node->value.op == AND || node->value.op == OR) {
return 1;
}
// Comparison node (=, >, <, etc.)
// Validate that the field (left child) exists in the fieldset
for (index = 0; index < fields->len; index++) {
if (fields->fielddefs[index].name) {
if (strcmp(fields->fielddefs[index].name,
node->left_child->value.field.fieldname) == 0) {
node->left_child->value.field.index = index;
found = 1;
break;
}
}
}
if (!found) {
fprintf(stderr, "Field '%s' does not exist\n",
node->left_child->value.field.fieldname);
return 0;
}
// Fieldname is fine, match the type.
switch (node->right_child->type) {
case STRING:
if (strcmp(fields->fielddefs[index].type, "string") == 0) {
return 1;
} else {
fprintf(stderr, "Field '%s' is not of type 'string'\n",
fields->fielddefs[index].name);
return 0;
}
case INT:
if (strcmp(fields->fielddefs[index].type, "int") == 0) {
return 1;
} else {
fprintf(stderr, "Field '%s' is not of type 'int'\n",
fields->fielddefs[index].name);
return 0;
}
default:
return 0;
}
} else {
// All non-op nodes are valid
return 1;
}
// Didn't validate
return 0;
}
int parse_filter_string(char *filter)
{
YY_BUFFER_STATE buffer_state = yy_scan_string(filter);
int status = yyparse();
yy_delete_buffer(buffer_state);
if (status) {
// Error
log_error("zmap", "Unable to parse filter string: '%s'", filter);
return 0;
}
zconf.filter.expression = zfilter;
return 1;
}
/*
* 0 Valid
* -1 Invalid Field Name
* -2 Type Mismatch
*/
int validate_filter(node_t *root, fielddefset_t *fields)
{
int valid;
if (!root) {
return 1;
}
valid = validate_node(root, fields);
if (!valid) {
return 0;
}
return (validate_filter(root->left_child, fields) && validate_filter(root->right_child, fields));
}

15
src/filter.h Normal file
View File

@ -0,0 +1,15 @@
#ifndef ZMAP_FILTER_H
#define ZMAP_FILTER_H
#include "expression.h"
#include "fieldset.h"
struct output_filter {
node_t *expression;
};
int parse_filter_string(char *filter);
int validate_filter(node_t *root, fielddefset_t *fields);
#endif /* ZMAP_FILTER_H */

26
src/lexer.l Normal file
View File

@ -0,0 +1,26 @@
%{
#pragma GCC diagnostic ignored "-Wredundant-decls"
#include <string.h>
#include "parser.h"
%}
%option noinput
%option nounput
%%
[0-9]+ yylval.int_literal = (uint64_t) atoll(yytext); return T_NUMBER;
\n /* Ignore end of line */
[ \t]+ /* Ignore whitespace */
!= return T_NOT_EQ;
>= return T_GT_EQ;
"<=" return T_LT_EQ;
&& return T_AND;
"||" return T_OR;
= return '=';
">" return '>';
"<" return '<';
"(" return '(';
")" return ')';
[a-zA-Z][a-zA-Z0-9]+ yylval.string_literal = strdup(yytext); return T_FIELD;
%%

8
src/output_modules/module_csv.c
View File

@ -14,6 +14,7 @@
#include <netinet/in.h>
#include <arpa/inet.h>
#include <assert.h>
#include <inttypes.h>
#include "../../lib/logger.h"
#include "../fieldset.h"
@ -79,11 +80,11 @@ int csv_process(fieldset_t *fs)
fprintf(file, ", ");
}
if (f->type == FS_STRING) {
fprintf(file, "%s", (char*) f->value);
fprintf(file, "%s", (char*) f->value.ptr);
} else if (f->type == FS_UINT64) {
fprintf(file, "%lu", (uint64_t) f->value);
fprintf(file, "%" PRIu64, (uint64_t) f->value.num);
} else if (f->type == FS_BINARY) {
hex_encode(file, (unsigned char*) f->value, f->len);
hex_encode(file, (unsigned char*) f->value.ptr, f->len);
} else if (f->type == FS_NULL) {
// do nothing
} else {
@ -102,5 +103,6 @@ output_module_t module_csv_file = {
.update_interval = 0,
.close = &csv_close,
.process_ip = &csv_process,
.helptext = NULL
};

7
src/output_modules/module_json.c
View File

@ -149,13 +149,13 @@ int json_output_file_ip(fieldset_t *fs)
field_t *f = &(fs->fields[i]);
if (f->type == FS_STRING) {
json_object_object_add(obj, f->name,
json_object_new_string((char*) f->value));
json_object_new_string((char *) f->value.ptr));
} else if (f->type == FS_UINT64) {
json_object_object_add(obj, f->name,
json_object_new_int((int) f->value));
json_object_new_int((int) f->value.num));
} else if (f->type == FS_BINARY) {
json_output_file_store_data(obj,
(const u_char*) f->value, f->len);
(const u_char*) f->value.ptr, f->len);
} else if (f->type == FS_NULL) {
// do nothing
} else {
@ -188,5 +188,6 @@ output_module_t module_json_file = {
.update_interval = 0,
.close = &json_output_file_close,
.process_ip = &json_output_file_ip,
.helptext = NULL
};

57
src/output_modules/module_redis.c
View File

@ -22,54 +22,59 @@
#define UNUSED __attribute__((unused))
typedef struct scannable_t {
in_addr_t ip_address;
uint8_t source;
} scannable_t;
#define QUEUE_NAME "zmap_results"
#define BUFFER_SIZE 500
#define SOURCE_ZMAP 0
static scannable_t* buffer;
static uint32_t *buffer;
static int buffer_fill = 0;
static char *queue_name = NULL;
int redismodule_init(UNUSED struct state_conf *conf)
static int redismodule_init(struct state_conf *conf, char **fields, int fieldlens)
{
buffer = calloc(BUFFER_SIZE, sizeof(scannable_t));
assert(fieldlens == 1);
buffer = calloc(BUFFER_SIZE, sizeof(uint32_t));
assert(buffer);
buffer_fill = 0;
return redis_init();
if (conf->output_args) {
redisconf_t *rconf = redis_parse_connstr(conf->output_args);
if (rconf->type == T_TCP) {
log_info("redis-module", "{type: TCP, server: %s, "
"port: %u, list: %s}", rconf->server,
rconf->port, rconf->list_name);
} else {
log_info("redis-module", "{type: LOCAL, path: %s, "
"list: %s}", rconf->path, rconf->list_name);
}
queue_name = rconf->list_name;
} else {
queue_name = "zmap_output";
}
return redis_init(conf->output_args);
}
int redismodule_flush(void)
static int redismodule_flush(void)
{
if (redis_lpush((char *)QUEUE_NAME, buffer,
buffer_fill, sizeof(scannable_t))) {
if (redis_lpush((char *)queue_name, buffer,
buffer_fill, sizeof(uint32_t))) {
return EXIT_FAILURE;
}
buffer_fill = 0;
return EXIT_SUCCESS;
}
int redismodule_newip(ipaddr_n_t saddr, UNUSED ipaddr_n_t daddr,
UNUSED const char *response_type, int is_repeat,
UNUSED int in_cooldown, UNUSED const u_char *packet, UNUSED size_t len)
static int redismodule_process(fieldset_t *fs)
{
if (!is_repeat) {
buffer[buffer_fill].ip_address = saddr;
buffer[buffer_fill].source = SOURCE_ZMAP;
field_t *f = &(fs->fields[0]);
buffer[buffer_fill] = (uint32_t) f->value.num;
if (++buffer_fill == BUFFER_SIZE) {
if (redismodule_flush()) {
return EXIT_FAILURE;
}
}
}
return EXIT_SUCCESS;
}
int redismodule_close(UNUSED struct state_conf* c,
static int redismodule_close(UNUSED struct state_conf* c,
UNUSED struct state_send* s,
UNUSED struct state_recv* r)
{
@ -83,13 +88,13 @@ int redismodule_close(UNUSED struct state_conf* c,
}
output_module_t module_redis = {
.name = "redis",
.name = "redis-packed",
.init = &redismodule_init,
.start = NULL,
.update = NULL,
.update_interval = 0,
.close = &redismodule_close,
.success_ip = &redismodule_newip,
.other_ip = NULL
.process_ip = &redismodule_process,
.helptext = NULL
};

5
src/output_modules/output_modules.c
View File

@ -6,7 +6,6 @@
* of the License at http://www.apache.org/licenses/LICENSE-2.0
*/
#include <stdio.h>
#include <string.h>
@ -25,7 +24,7 @@ extern output_module_t module_json_file;
output_module_t* output_modules[] = {
&module_csv_file,
#ifdef REDIS
//&module_redis,
&module_redis,
#endif
#ifdef JSON
&module_json_file
@ -33,8 +32,6 @@ output_module_t* output_modules[] = {
// ADD YOUR MODULE HERE
};
output_module_t* get_output_module_by_name(const char* name)
{
int num_modules = (int) (sizeof(output_modules)/sizeof(output_modules[0]));

2
src/output_modules/output_modules.h
View File

@ -30,9 +30,9 @@ typedef struct output_module {
output_update_cb update;
output_update_cb close;
output_packet_cb process_ip;
const char *helptext;
} output_module_t;
output_module_t* get_output_module_by_name(const char*);
void print_output_modules(void);

144
src/parser.y Normal file
View File

@ -0,0 +1,144 @@
%{
#include <stdio.h>
#include <string.h>
#include "expression.h"
#include "lexer.h"
#include "filter.h"
void yyerror(const char *str)
{
fprintf(stderr,"Parse error: %s\n",str);
}
int yywrap()
{
return 1;
}
extern node_t *zfilter;
%}
%union {
int int_literal;
char *string_literal;
struct node *expr;
}
%token '(' ')' T_AND T_OR
%token <int_literal> T_NUMBER
%token <string_literal> T_FIELD
%token T_NOT_EQ T_GT_EQ '>' '<' '=' T_LT_EQ
%left T_OR
%left T_AND
%type <expr> filter
%type <expr> number_filter
%type <expr> string_filter
%type <expr> filter_expr
%%
expression: filter_expr
{
zfilter = $1;
}
filter_expr:
filter_expr T_OR filter_expr
{
$$ = make_op_node(OR);
$$->left_child = $1;
$$->right_child = $3;
}
| filter_expr T_AND filter_expr
{
$$ = make_op_node(AND);
$$->left_child = $1;
$$->right_child = $3;
}
| '(' filter_expr ')'
{
$$ = $2;
}
| filter
{
$$ = $1;
}
;
filter: number_filter
{
$$ = $1;
}
| string_filter
{
$$ = $1;
}
;
number_filter: T_FIELD '=' T_NUMBER
{
$$ = make_op_node(EQ);
$$->left_child = make_field_node($1);
$$->right_child = make_int_node($3);
}
|
T_FIELD '>' T_NUMBER
{
$$ = make_op_node(GT);
$$->left_child = make_field_node($1);
$$->right_child = make_int_node($3);
}
|
T_FIELD '<' T_NUMBER
{
$$ = make_op_node(LT);
$$->left_child = make_field_node($1);
$$->right_child = make_int_node($3);
}
|
T_FIELD T_NOT_EQ T_NUMBER
{
$$ = make_op_node(NEQ);
$$->left_child = make_field_node($1);
$$->right_child = make_int_node($3);
}
|
T_FIELD T_GT_EQ T_NUMBER
{
$$ = make_op_node(GT_EQ);
$$->left_child = make_field_node($1);
$$->right_child = make_int_node($3);
}
|
T_FIELD T_LT_EQ T_NUMBER
{
$$ = make_op_node(LT_EQ);
$$->left_child = make_field_node($1);
$$->right_child = make_int_node($3);
}
;
string_filter:
T_FIELD '=' T_FIELD
{
$$ = make_op_node(EQ);
$$->left_child = make_field_node($1);
$$->right_child = make_string_node($3);
}
|
T_FIELD T_NOT_EQ T_FIELD
{
$$ = make_op_node(NEQ);
$$->left_child = make_field_node($1);
$$->right_child = make_string_node($3);
}
;
%%

30
src/recv.c
View File

@ -35,10 +35,12 @@
#include <assert.h>
#include "../lib/logger.h"
#include "../lib/pbm.h"
#include "state.h"
#include "validate.h"
#include "fieldset.h"
#include "expression.h"
#include "probe_modules/probe_modules.h"
#include "output_modules/output_modules.h"
@ -49,20 +51,7 @@ static uint32_t num_src_ports;
static pcap_t *pc = NULL;
// bitmap of observed IP addresses
static uint64_t *ip_seen = NULL;
static const int IP_SEEN_SIZE = 0x4000000; // == 2^32/64
// check if we've received a response from this address previously
static inline int check_ip(uint32_t ip)
{
return (ip_seen[ip >> 6] >> (ip & 0x3F)) & 1;
}
// set that we've received a response from the address
static inline void set_ip(uint32_t ip)
{
ip_seen[ip >> 6] |= (uint64_t)1 << (ip & 0x3F);
}
static uint64_t **seen = NULL;
static u_char fake_eth_hdr[65535];
@ -120,7 +109,7 @@ void packet_cb(u_char __attribute__((__unused__)) *user,
return;
}
int is_repeat = check_ip(src_ip);
int is_repeat = pbm_check(seen, ntohl(src_ip));
fieldset_t *fs = fs_new_fieldset();
fs_add_ip_fields(fs, ip_hdr);
@ -150,7 +139,7 @@ void packet_cb(u_char __attribute__((__unused__)) *user,
zrecv.success_total++;
if (!is_repeat) {
zrecv.success_unique++;
set_ip(src_ip);
pbm_set(seen, ntohl(src_ip));
}
if (zsend.complete) {
zrecv.cooldown_total++;
@ -170,6 +159,9 @@ void packet_cb(u_char __attribute__((__unused__)) *user,
if (is_repeat && zconf.filter_duplicates) {
goto cleanup;
}
if (!evaluate_expression(zconf.filter.expression, fs)) {
goto cleanup;
}
o = translate_fieldset(fs, &zconf.fsconf.translation);
if (zconf.output_module && zconf.output_module->process_ip) {
zconf.output_module->process_ip(o);
@ -205,10 +197,6 @@ int recv_run(pthread_mutex_t *recv_ready_mutex)
{
log_debug("recv", "thread started");
num_src_ports = zconf.source_port_last - zconf.source_port_first + 1;
ip_seen = calloc(IP_SEEN_SIZE, sizeof(uint64_t));
if (!ip_seen) {
log_fatal("recv", "could not allocate address bitmap");
}
log_debug("recv", "using dev %s", zconf.iface);
if (!zconf.dryrun) {
char errbuf[PCAP_ERRBUF_SIZE];
@ -235,6 +223,8 @@ int recv_run(pthread_mutex_t *recv_ready_mutex)
memset(fake_eth_hdr, 0, sizeof(fake_eth_hdr));
eth->h_proto = htons(ETH_P_IP);
}
// initialize paged bitmap
seen = pbm_init();
log_debug("recv", "receiver ready");
if (zconf.filter_duplicates) {
log_debug("recv", "duplicate responses will be excluded from output");

4
src/state.h
View File

@ -25,6 +25,7 @@
#include "types.h"
#include "fieldset.h"
#include "filter.h"
#ifndef STATE_H
#define STATE_H
@ -87,8 +88,11 @@ struct state_conf {
char *output_filename;
char *blacklist_filename;
char *whitelist_filename;
char **destination_cidrs;
int destination_cidrs_len;
char *raw_output_fields;
char **output_fields;
struct output_filter filter;
struct fieldset_conf fsconf;
int output_fields_len;
int dryrun;

134
src/zmap.c
View File

@ -40,6 +40,7 @@
#include "state.h"
#include "monitor.h"
#include "get_gateway.h"
#include "filter.h"
#include "output_modules/output_modules.h"
#include "probe_modules/probe_modules.h"
@ -199,8 +200,6 @@ static void summary(void)
static void start_zmap(void)
{
log_info("zmap", "started");
// finish setting up configuration
if (zconf.iface == NULL) {
char errbuf[PCAP_ERRBUF_SIZE];
char *iface = pcap_lookupdev(errbuf);
@ -242,7 +241,6 @@ static void start_zmap(void)
zconf.gw_mac[0], zconf.gw_mac[1], zconf.gw_mac[2],
zconf.gw_mac[3], zconf.gw_mac[4], zconf.gw_mac[5]);
}
// initialization
if (zconf.output_module && zconf.output_module->init) {
zconf.output_module->init(&zconf, zconf.output_fields,
@ -397,9 +395,69 @@ int main(int argc, char *argv[])
zconf.log_level = args.verbosity_arg;
log_init(stderr, zconf.log_level);
log_trace("zmap", "zmap main thread started");
// parse the provided probe and output module s.t. that we can support
// other command-line helpers (e.g. probe help)
if (!args.output_module_given) {
zconf.output_module = get_output_module_by_name("csv");
zconf.raw_output_fields = (char*) "saddr";
zconf.filter_duplicates = 1;
zconf.filter_unsuccessful = 1;
} else if (!strcmp(args.output_module_arg, "simple_file")) {
log_warn("zmap", "the simple_file output interface has been deprecated and "
"will be removed in the future. Users should use the csv "
"output module. Newer scan options such as output-fields "
"are not supported with this output module.");
zconf.output_module = get_output_module_by_name("csv");
zconf.raw_output_fields = (char*) "saddr";
zconf.filter_duplicates = 1;
zconf.filter_unsuccessful = 1;
} else if (!strcmp(args.output_module_arg, "extended_file")) {
log_warn("zmap", "the extended_file output interface has been deprecated and "
"will be removed in the future. Users should use the csv "
"output module. Newer scan options such as output-fields "
"are not supported with this output module.");
zconf.output_module = get_output_module_by_name("csv");
zconf.raw_output_fields = (char*) "classification, saddr, "
"daddr, sport, dport, "
"seqnum, acknum, cooldown, "
"repeat, timestamp-str";
zconf.filter_duplicates = 0;
} else if (!strcmp(args.output_module_arg, "redis")) {
log_warn("zmap", "the redis output interface has been deprecated and "
"will be removed in the future. Users should "
"either use redis-packed or redis-json in the "
"future.");
zconf.output_module = get_output_module_by_name("redis-packed");
zconf.raw_output_fields = (char*) "saddr";
zconf.filter_duplicates = 1;
} else {
zconf.output_module = get_output_module_by_name(args.output_module_arg);
if (!zconf.output_module) {
fprintf(stderr, "%s: specified output module (%s) does not exist\n",
CMDLINE_PARSER_PACKAGE, args.output_module_arg);
exit(EXIT_FAILURE);
}
}
zconf.probe_module = get_probe_module_by_name(args.probe_module_arg);
if (!zconf.probe_module) {
fprintf(stderr, "%s: specified probe module (%s) does not exist\n",
CMDLINE_PARSER_PACKAGE, args.probe_module_arg);
exit(EXIT_FAILURE);
}
if (args.help_given) {
cmdline_parser_print_help();
printf("\nselected probe-module (%s) help\n", zconf.probe_module->name);
if (zconf.probe_module->helptext) {
printf("%s\n", zconf.probe_module->helptext);
} else {
printf("no help text available\n");
}
printf("\nselected output-module (%s) help\n", zconf.output_module->name);
if (zconf.output_module->helptext) {
printf("%s\n", zconf.output_module->helptext);
} else {
printf("no help text available\n");
}
exit(EXIT_SUCCESS);
}
if (args.version_given) {
@ -430,47 +488,6 @@ int main(int argc, char *argv[])
if (cmdline_parser_required(&args, CMDLINE_PARSER_PACKAGE) != 0) {
exit(EXIT_FAILURE);
}
// parse the provided probe and output module s.t. that we can support
// other command-line helpers (e.g. probe help)
if (!args.output_module_given) {
zconf.output_module = get_output_module_by_name("csv");
zconf.raw_output_fields = (char*) "saddr";
zconf.filter_duplicates = 1;
zconf.filter_unsuccessful = 1;
} else if (!strcmp(args.output_module_arg, "simple_file")) {
log_warn("zmap", "the simple_file output interface has been deprecated and "
"will be removed in the future. Users should use the csv "
"output module. Newer scan options such as output-fields "
"are not supported with this output module.");
zconf.output_module = get_output_module_by_name("csv");
zconf.raw_output_fields = (char*) "saddr";
zconf.filter_duplicates = 1;
zconf.filter_unsuccessful = 1;
} else if (!strcmp(args.output_module_arg, "extended_file")) {
log_warn("zmap", "the extended_file output interface has been deprecated and "
"will be removed in the future. Users should use the csv "
"output module. Newer scan options such as output-fields "
"are not supported with this output module.");
zconf.output_module = get_output_module_by_name("csv");
zconf.raw_output_fields = (char*) "classification, saddr, "
"daddr, sport, dport, "
"seqnum, acknum, cooldown, "
"repeat, timestamp-str";
zconf.filter_duplicates = 0;
} else {
zconf.output_module = get_output_module_by_name(args.output_module_arg);
if (!zconf.output_module) {
fprintf(stderr, "%s: specified output module (%s) does not exist\n",
CMDLINE_PARSER_PACKAGE, args.output_module_arg);
exit(EXIT_FAILURE);
}
}
zconf.probe_module = get_probe_module_by_name(args.probe_module_arg);
if (!zconf.probe_module) {
fprintf(stderr, "%s: specified probe module (%s) does not exist\n",
CMDLINE_PARSER_PACKAGE, args.probe_module_arg);
exit(EXIT_FAILURE);
}
// now that we know the probe module, let's find what it supports
memset(&zconf.fsconf, 0, sizeof(struct fieldset_conf));
@ -523,6 +540,19 @@ int main(int argc, char *argv[])
&zconf.fsconf.defs, zconf.output_fields,
zconf.output_fields_len);
// Parse and validate the output filter, if any
if (args.output_filter_arg) {
// Run it through yyparse to build the expression tree
if (!parse_filter_string(args.output_filter_arg)) {
log_fatal("zmap", "Unable to parse filter expression");
}
// Check the fields used against the fieldset in use
if (!validate_filter(zconf.filter.expression, &zconf.fsconf.defs)) {
log_fatal("zmap", "Invalid filter");
}
}
SET_BOOL(zconf.dryrun, dryrun);
SET_BOOL(zconf.quiet, quiet);
SET_BOOL(zconf.summary, summary);
@ -530,7 +560,6 @@ int main(int argc, char *argv[])
zconf.senders = args.sender_threads_arg;
SET_IF_GIVEN(zconf.output_filename, output_file);
SET_IF_GIVEN(zconf.blacklist_filename, blacklist_file);
SET_IF_GIVEN(zconf.whitelist_filename, whitelist_file);
SET_IF_GIVEN(zconf.probe_args, probe_args);
SET_IF_GIVEN(zconf.output_args, output_args);
SET_IF_GIVEN(zconf.iface, interface);
@ -539,6 +568,19 @@ int main(int argc, char *argv[])
SET_IF_GIVEN(zconf.rate, rate);
SET_IF_GIVEN(zconf.packet_streams, probes);
// find if zmap wants any specific cidrs scanned instead
// of the entire Internet
zconf.destination_cidrs = args.inputs;
zconf.destination_cidrs_len = args.inputs_num;
if (zconf.destination_cidrs && zconf.blacklist_filename
&& !strcmp(zconf.blacklist_filename, "/etc/zmap/blacklist.conf")) {
log_warn("blacklist", "ZMap is currently using the default blacklist located "
"at /etc/zmap/blacklist.conf. By default, this blacklist excludes locally "
"scoped networks (e.g. 10.0.0.0/8, 127.0.0.1/8, and 192.168.0.0/16). If you are"
" trying to scan local networks, you can change the default blacklist by "
"editing the default ZMap configuration at /etc/zmap/zmap.conf.");
}
SET_IF_GIVEN(zconf.whitelist_filename, whitelist_file);
if (zconf.probe_module->port_args) {
if (args.source_port_given) {

1399
src/zopt.c
View File

File diff suppressed because it is too large Load Diff

8
src/zopt.ggo
View File

@ -94,6 +94,9 @@ option "probe-args" - "Arguments to pass to probe module"
option "output-args" - "Arguments to pass to output module"
typestr="args"
optional string
option "output-filter" - "Read a file containing an output filter on the first line"
typestr="filename"
optional string
option "list-output-modules" - "List available output modules"
optional
option "list-probe-modules" - "List available probe modules"
@ -122,5 +125,6 @@ option "version" V "Print version and exit"
text "\nExamples:\n\
zmap -p 443 (scans the whole Internet for hosts with port 443 open)\n\
zmap -N 5 -B 10M -p 80 -o - (find 5 HTTP servers, scanning at 10 Mb/s)"
zmap -N 5 -B 10M -p 80 -o - (find 5 HTTP servers, scanning at 10 Mb/s)\n
zmap -p 80 10.0.0.0/8 192.168.0.0/16 -o (scan 10.0.0.0/8 and 192.168.0.0/16 on port 80)\n
zmap -p 80 192.168.1.2 192.168.1.3 (scan 192.168.1.2 and 192.168.1.3 on port 80)"

306
src/zopt.h
View File

@ -1,306 +0,0 @@
/** @file zopt.h
* @brief The header file for the command line option parser
* generated by GNU Gengetopt version 2.22.5
* http://www.gnu.org/software/gengetopt.
* DO NOT modify this file, since it can be overwritten
* @author GNU Gengetopt by Lorenzo Bettini */
#ifndef ZOPT_H
#define ZOPT_H
/* If we use autoconf. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h> /* for FILE */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#ifndef CMDLINE_PARSER_PACKAGE
/** @brief the program name (used for printing errors) */
#define CMDLINE_PARSER_PACKAGE "zmap"
#endif
#ifndef CMDLINE_PARSER_PACKAGE_NAME
/** @brief the complete program name (used for help and version) */
#define CMDLINE_PARSER_PACKAGE_NAME "zmap"
#endif
#ifndef CMDLINE_PARSER_VERSION
/** @brief the program version */
#define CMDLINE_PARSER_VERSION "1.0.0"
#endif
/** @brief Where the command line options are stored */
struct gengetopt_args_info
{
int target_port_arg; /**< @brief TCP port number to scan (for SYN scans). */
char * target_port_orig; /**< @brief TCP port number to scan (for SYN scans) original value given at command line. */
const char *target_port_help; /**< @brief TCP port number to scan (for SYN scans) help description. */
char * output_file_arg; /**< @brief Output file. */
char * output_file_orig; /**< @brief Output file original value given at command line. */
const char *output_file_help; /**< @brief Output file help description. */
char * blacklist_file_arg; /**< @brief File of subnets to exclude, in CIDR notation, e.g. 192.168.0.0/16. */
char * blacklist_file_orig; /**< @brief File of subnets to exclude, in CIDR notation, e.g. 192.168.0.0/16 original value given at command line. */
const char *blacklist_file_help; /**< @brief File of subnets to exclude, in CIDR notation, e.g. 192.168.0.0/16 help description. */
char * whitelist_file_arg; /**< @brief File of subnets to constrain scan to, in CIDR notation, e.g. 192.168.0.0/16. */
char * whitelist_file_orig; /**< @brief File of subnets to constrain scan to, in CIDR notation, e.g. 192.168.0.0/16 original value given at command line. */
const char *whitelist_file_help; /**< @brief File of subnets to constrain scan to, in CIDR notation, e.g. 192.168.0.0/16 help description. */
char * output_fields_arg; /**< @brief Fields that should be output in result set. */
char * output_fields_orig; /**< @brief Fields that should be output in result set original value given at command line. */
const char *output_fields_help; /**< @brief Fields that should be output in result set help description. */
char * max_targets_arg; /**< @brief Cap number of targets to probe (as a number or a percentage of the address space). */
char * max_targets_orig; /**< @brief Cap number of targets to probe (as a number or a percentage of the address space) original value given at command line. */
const char *max_targets_help; /**< @brief Cap number of targets to probe (as a number or a percentage of the address space) help description. */
int max_results_arg; /**< @brief Cap number of results to return. */
char * max_results_orig; /**< @brief Cap number of results to return original value given at command line. */
const char *max_results_help; /**< @brief Cap number of results to return help description. */
int max_runtime_arg; /**< @brief Cap length of time for sending packets. */
char * max_runtime_orig; /**< @brief Cap length of time for sending packets original value given at command line. */
const char *max_runtime_help; /**< @brief Cap length of time for sending packets help description. */
int rate_arg; /**< @brief Set send rate in packets/sec. */
char * rate_orig; /**< @brief Set send rate in packets/sec original value given at command line. */
const char *rate_help; /**< @brief Set send rate in packets/sec help description. */
char * bandwidth_arg; /**< @brief Set send rate in bits/second (supports suffixes G, M and K). */
char * bandwidth_orig; /**< @brief Set send rate in bits/second (supports suffixes G, M and K) original value given at command line. */
const char *bandwidth_help; /**< @brief Set send rate in bits/second (supports suffixes G, M and K) help description. */
int cooldown_time_arg; /**< @brief How long to continue receiving after sending last probe (default='8'). */
char * cooldown_time_orig; /**< @brief How long to continue receiving after sending last probe original value given at command line. */
const char *cooldown_time_help; /**< @brief How long to continue receiving after sending last probe help description. */
int seed_arg; /**< @brief Seed used to select address permutation. */
char * seed_orig; /**< @brief Seed used to select address permutation original value given at command line. */
const char *seed_help; /**< @brief Seed used to select address permutation help description. */
int sender_threads_arg; /**< @brief Threads used to send packets (default='1'). */
char * sender_threads_orig; /**< @brief Threads used to send packets original value given at command line. */
const char *sender_threads_help; /**< @brief Threads used to send packets help description. */
int probes_arg; /**< @brief Number of probes to send to each IP (default='1'). */
char * probes_orig; /**< @brief Number of probes to send to each IP original value given at command line. */
const char *probes_help; /**< @brief Number of probes to send to each IP help description. */
const char *dryrun_help; /**< @brief Don't actually send packets help description. */
char * source_port_arg; /**< @brief Source port(s) for scan packets. */
char * source_port_orig; /**< @brief Source port(s) for scan packets original value given at command line. */
const char *source_port_help; /**< @brief Source port(s) for scan packets help description. */
char * source_ip_arg; /**< @brief Source address(es) for scan packets. */
char * source_ip_orig; /**< @brief Source address(es) for scan packets original value given at command line. */
const char *source_ip_help; /**< @brief Source address(es) for scan packets help description. */
char * gateway_mac_arg; /**< @brief Specify gateway MAC address. */
char * gateway_mac_orig; /**< @brief Specify gateway MAC address original value given at command line. */
const char *gateway_mac_help; /**< @brief Specify gateway MAC address help description. */
char * interface_arg; /**< @brief Specify network interface to use. */
char * interface_orig; /**< @brief Specify network interface to use original value given at command line. */
const char *interface_help; /**< @brief Specify network interface to use help description. */
const char *vpn_help; /**< @brief Sends IP packets instead of Ethernet (for VPNs) help description. */
char * probe_module_arg; /**< @brief Select probe module (default='tcp_synscan'). */
char * probe_module_orig; /**< @brief Select probe module original value given at command line. */
const char *probe_module_help; /**< @brief Select probe module help description. */
char * output_module_arg; /**< @brief Select output module (default='simple_file'). */
char * output_module_orig; /**< @brief Select output module original value given at command line. */
const char *output_module_help; /**< @brief Select output module help description. */
char * probe_args_arg; /**< @brief Arguments to pass to probe module. */
char * probe_args_orig; /**< @brief Arguments to pass to probe module original value given at command line. */
const char *probe_args_help; /**< @brief Arguments to pass to probe module help description. */
char * output_args_arg; /**< @brief Arguments to pass to output module. */
char * output_args_orig; /**< @brief Arguments to pass to output module original value given at command line. */
const char *output_args_help; /**< @brief Arguments to pass to output module help description. */
const char *list_output_modules_help; /**< @brief List available output modules help description. */
const char *list_probe_modules_help; /**< @brief List available probe modules help description. */
const char *list_output_fields_help; /**< @brief List all fields that can be output by selected probe module help description. */
char * config_arg; /**< @brief Read a configuration file, which can specify any of these options (default='/etc/zmap/zmap.conf'). */
char * config_orig; /**< @brief Read a configuration file, which can specify any of these options original value given at command line. */
const char *config_help; /**< @brief Read a configuration file, which can specify any of these options help description. */
const char *quiet_help; /**< @brief Do not print status updates help description. */
const char *summary_help; /**< @brief Print configuration and summary at end of scan help description. */
int verbosity_arg; /**< @brief Level of log detail (0-5) (default='3'). */
char * verbosity_orig; /**< @brief Level of log detail (0-5) original value given at command line. */
const char *verbosity_help; /**< @brief Level of log detail (0-5) help description. */
const char *help_help; /**< @brief Print help and exit help description. */
const char *version_help; /**< @brief Print version and exit help description. */
unsigned int target_port_given ; /**< @brief Whether target-port was given. */
unsigned int output_file_given ; /**< @brief Whether output-file was given. */
unsigned int blacklist_file_given ; /**< @brief Whether blacklist-file was given. */
unsigned int whitelist_file_given ; /**< @brief Whether whitelist-file was given. */
unsigned int output_fields_given ; /**< @brief Whether output-fields was given. */
unsigned int max_targets_given ; /**< @brief Whether max-targets was given. */
unsigned int max_results_given ; /**< @brief Whether max-results was given. */
unsigned int max_runtime_given ; /**< @brief Whether max-runtime was given. */
unsigned int rate_given ; /**< @brief Whether rate was given. */
unsigned int bandwidth_given ; /**< @brief Whether bandwidth was given. */
unsigned int cooldown_time_given ; /**< @brief Whether cooldown-time was given. */
unsigned int seed_given ; /**< @brief Whether seed was given. */
unsigned int sender_threads_given ; /**< @brief Whether sender-threads was given. */
unsigned int probes_given ; /**< @brief Whether probes was given. */
unsigned int dryrun_given ; /**< @brief Whether dryrun was given. */
unsigned int source_port_given ; /**< @brief Whether source-port was given. */
unsigned int source_ip_given ; /**< @brief Whether source-ip was given. */
unsigned int gateway_mac_given ; /**< @brief Whether gateway-mac was given. */
unsigned int interface_given ; /**< @brief Whether interface was given. */
unsigned int vpn_given ; /**< @brief Whether vpn was given. */
unsigned int probe_module_given ; /**< @brief Whether probe-module was given. */
unsigned int output_module_given ; /**< @brief Whether output-module was given. */
unsigned int probe_args_given ; /**< @brief Whether probe-args was given. */
unsigned int output_args_given ; /**< @brief Whether output-args was given. */
unsigned int list_output_modules_given ; /**< @brief Whether list-output-modules was given. */
unsigned int list_probe_modules_given ; /**< @brief Whether list-probe-modules was given. */
unsigned int list_output_fields_given ; /**< @brief Whether list-output-fields was given. */
unsigned int config_given ; /**< @brief Whether config was given. */
unsigned int quiet_given ; /**< @brief Whether quiet was given. */
unsigned int summary_given ; /**< @brief Whether summary was given. */
unsigned int verbosity_given ; /**< @brief Whether verbosity was given. */
unsigned int help_given ; /**< @brief Whether help was given. */
unsigned int version_given ; /**< @brief Whether version was given. */
} ;
/** @brief The additional parameters to pass to parser functions */
struct cmdline_parser_params
{
int override; /**< @brief whether to override possibly already present options (default 0) */
int initialize; /**< @brief whether to initialize the option structure gengetopt_args_info (default 1) */
int check_required; /**< @brief whether to check that all required options were provided (default 1) */
int check_ambiguity; /**< @brief whether to check for options already specified in the option structure gengetopt_args_info (default 0) */
int print_errors; /**< @brief whether getopt_long should print an error message for a bad option (default 1) */
} ;
/** @brief the purpose string of the program */
extern const char *gengetopt_args_info_purpose;
/** @brief the usage string of the program */
extern const char *gengetopt_args_info_usage;
/** @brief all the lines making the help output */
extern const char *gengetopt_args_info_help[];
/**
* The command line parser
* @param argc the number of command line options
* @param argv the command line options
* @param args_info the structure where option information will be stored
* @return 0 if everything went fine, NON 0 if an error took place
*/
int cmdline_parser (int argc, char **argv,
struct gengetopt_args_info *args_info);
/**
* The command line parser (version with additional parameters - deprecated)
* @param argc the number of command line options
* @param argv the command line options
* @param args_info the structure where option information will be stored
* @param override whether to override possibly already present options
* @param initialize whether to initialize the option structure my_args_info
* @param check_required whether to check that all required options were provided
* @return 0 if everything went fine, NON 0 if an error took place
* @deprecated use cmdline_parser_ext() instead
*/
int cmdline_parser2 (int argc, char **argv,
struct gengetopt_args_info *args_info,
int override, int initialize, int check_required);
/**
* The command line parser (version with additional parameters)
* @param argc the number of command line options
* @param argv the command line options
* @param args_info the structure where option information will be stored
* @param params additional parameters for the parser
* @return 0 if everything went fine, NON 0 if an error took place
*/
int cmdline_parser_ext (int argc, char **argv,
struct gengetopt_args_info *args_info,
struct cmdline_parser_params *params);
/**
* Save the contents of the option struct into an already open FILE stream.
* @param outfile the stream where to dump options
* @param args_info the option struct to dump
* @return 0 if everything went fine, NON 0 if an error took place
*/
int cmdline_parser_dump(FILE *outfile,
struct gengetopt_args_info *args_info);
/**
* Save the contents of the option struct into a (text) file.
* This file can be read by the config file parser (if generated by gengetopt)
* @param filename the file where to save
* @param args_info the option struct to save
* @return 0 if everything went fine, NON 0 if an error took place
*/
int cmdline_parser_file_save(const char *filename,
struct gengetopt_args_info *args_info);
/**
* Print the help
*/
void cmdline_parser_print_help(void);
/**
* Print the version
*/
void cmdline_parser_print_version(void);
/**
* Initializes all the fields a cmdline_parser_params structure
* to their default values
* @param params the structure to initialize
*/
void cmdline_parser_params_init(struct cmdline_parser_params *params);
/**
* Allocates dynamically a cmdline_parser_params structure and initializes
* all its fields to their default values
* @return the created and initialized cmdline_parser_params structure
*/
struct cmdline_parser_params *cmdline_parser_params_create(void);
/**
* Initializes the passed gengetopt_args_info structure's fields
* (also set default values for options that have a default)
* @param args_info the structure to initialize
*/
void cmdline_parser_init (struct gengetopt_args_info *args_info);
/**
* Deallocates the string fields of the gengetopt_args_info structure
* (but does not deallocate the structure itself)
* @param args_info the structure to deallocate
*/
void cmdline_parser_free (struct gengetopt_args_info *args_info);
/**
* The config file parser (deprecated version)
* @param filename the name of the config file
* @param args_info the structure where option information will be stored
* @param override whether to override possibly already present options
* @param initialize whether to initialize the option structure my_args_info
* @param check_required whether to check that all required options were provided
* @return 0 if everything went fine, NON 0 if an error took place
* @deprecated use cmdline_parser_config_file() instead
*/
int cmdline_parser_configfile (const char *filename,
struct gengetopt_args_info *args_info,
int override, int initialize, int check_required);
/**
* The config file parser
* @param filename the name of the config file
* @param args_info the structure where option information will be stored
* @param params additional parameters for the parser
* @return 0 if everything went fine, NON 0 if an error took place
*/
int cmdline_parser_config_file (const char *filename,
struct gengetopt_args_info *args_info,
struct cmdline_parser_params *params);
/**
* Checks that all the required options were specified
* @param args_info the structure to check
* @param prog_name the name of the program that will be used to print
* possible errors
* @return
*/
int cmdline_parser_required (struct gengetopt_args_info *args_info,
const char *prog_name);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* ZOPT_H */

6
zmap_conf_install.cmake.in Normal file
View File

@ -0,0 +1,6 @@
foreach(conf_file ${CONF_FILES})
message(STATUS "${conf_file}")
if(NOT EXISTS "/etc/zmap/${conf_file}")
file(INSTALL "conf/${conf_file}" DESTINATION "/etc/zmap")
endif()
endforeach()