void OS_InitFwLog()
{
/* Initialize fw log regexes */
if (!OSMatch_Compile(FWDROP, &FWDROPpm, 0)) {
ErrorExit(REGEX_COMPILE, ARGV0, FWDROP,
FWDROPpm.error);
}
if (!OSMatch_Compile(FWALLOW, &FWALLOWpm, 0)) {
ErrorExit(REGEX_COMPILE, ARGV0, FWALLOW,
FWALLOWpm.error);
}
}
int dump_registry_ignore_regex(syscheck_config *syscheck, char *regex, int arch) {
OSMatch *mt_pt;
int ign_size = 0;
if (!syscheck->registry_ignore_regex) {
os_calloc(2, sizeof(registry_regex),
syscheck->registry_ignore_regex);
syscheck->registry_ignore_regex[0].regex = NULL;
syscheck->registry_ignore_regex[1].regex = NULL;
} else {
while (syscheck->registry_ignore_regex[ign_size].regex != NULL) {
ign_size++;
}
os_realloc(syscheck->registry_ignore_regex,
sizeof(registry_regex) * (ign_size + 2),
syscheck->registry_ignore_regex);
syscheck->registry_ignore_regex[ign_size + 1].regex = NULL;
}
os_calloc(1, sizeof(OSMatch),
syscheck->registry_ignore_regex[ign_size].regex);
if (!OSMatch_Compile(regex,
syscheck->registry_ignore_regex[ign_size].regex, 0)) {
mt_pt = syscheck->registry_ignore_regex[ign_size].regex;
merror(REGEX_COMPILE, __local_name, regex, mt_pt->error);
return (0);
}
syscheck->registry_ignore_regex[ign_size].arch = arch;
return 1;
}
int Read_CSyslog(XML_NODE node, void *config, void *config2)
{
int i = 0,s = 0;
/* XML definitions */
char *xml_syslog_server = "server";
char *xml_syslog_port = "port";
char *xml_syslog_format = "format";
char *xml_syslog_level = "level";
char *xml_syslog_id = "rule_id";
char *xml_syslog_group = "group";
char *xml_syslog_location = "event_location";
GeneralConfig *gen_config = (GeneralConfig *)config;
SyslogConfig **syslog_config = (SyslogConfig **)gen_config->data;
/* Getting Granular mail_to size */
if(syslog_config)
{
while(syslog_config[s])
s++;
}
/* Allocating the memory for the config. */
os_realloc(syslog_config, (s + 2) * sizeof(SyslogConfig *), syslog_config);
os_calloc(1, sizeof(SyslogConfig), syslog_config[s]);
syslog_config[s + 1] = NULL;
/* Zeroing the elements. */
syslog_config[s]->server = NULL;
syslog_config[s]->rule_id = NULL;
syslog_config[s]->group = NULL;
syslog_config[s]->location = NULL;
syslog_config[s]->level = 0;
syslog_config[s]->port = "514";
syslog_config[s]->format = DEFAULT_CSYSLOG;
/* local 0 facility (16) + severity 4 - warning. --default */
syslog_config[s]->priority = (16 * 8) + 4;
while(node[i])
{
if(!node[i]->element)
{
merror(XML_ELEMNULL, ARGV0);
return(OS_INVALID);
}
else if(!node[i]->content)
{
merror(XML_VALUENULL, ARGV0, node[i]->element);
return(OS_INVALID);
}
else if(strcmp(node[i]->element, xml_syslog_level) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
syslog_config[s]->level = atoi(node[i]->content);
}
else if(strcmp(node[i]->element, xml_syslog_port) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
os_strdup(node[i]->content, syslog_config[s]->port);
}
else if(strcmp(node[i]->element, xml_syslog_server) == 0)
{
os_strdup(node[i]->content, syslog_config[s]->server);
}
else if(strcmp(node[i]->element, xml_syslog_id) == 0)
{
int r_id = 0;
char *str_pt = node[i]->content;
while(*str_pt != '\0')
{
/* We allow spaces in between */
if(*str_pt == ' ')
{
str_pt++;
continue;
}
/* If is digit, we get the value
* and search for the next digit
* available
*/
else if(isdigit((int)*str_pt))
{
int id_i = 0;
r_id = atoi(str_pt);
debug1("%s: DEBUG: Adding '%d' to syslog alerting",
ARGV0, r_id);
if(syslog_config[s]->rule_id)
{
while(syslog_config[s]->rule_id[id_i])
id_i++;
}
os_realloc(syslog_config[s]->rule_id,
(id_i +2) * sizeof(int),
syslog_config[s]->rule_id);
syslog_config[s]->rule_id[id_i + i] = 0;
syslog_config[s]->rule_id[id_i] = r_id;
str_pt = strchr(str_pt, ',');
if(str_pt)
{
str_pt++;
}
else
{
break;
}
}
/* Checking for duplicate commas */
else if(*str_pt == ',')
{
str_pt++;
continue;
}
else
{
break;
}
}
}
else if(strcmp(node[i]->element, xml_syslog_format) == 0)
{
if(strcmp(node[i]->content, "default") == 0)
{
/* Default is full format */
}
else if (strcmp(node[i]->content, "cef") == 0)
{
/* Enable the CEF format */
syslog_config[s]->format = CEF_CSYSLOG;
}
else if (strcmp(node[i]->content, "json") == 0)
{
/* Enable the JSON format */
syslog_config[s]->format = JSON_CSYSLOG;
}
else if (strcmp(node[i]->content, "splunk") == 0)
{
/* Enable the Splunk Key/Value format */
syslog_config[s]->format = SPLUNK_CSYSLOG;
}
else
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
}
else if(strcmp(node[i]->element, xml_syslog_location) == 0)
{
os_calloc(1, sizeof(OSMatch),syslog_config[s]->location);
if(!OSMatch_Compile(node[i]->content,
syslog_config[s]->location, 0))
{
merror(REGEX_COMPILE, ARGV0, node[i]->content,
syslog_config[s]->location->error);
return(-1);
}
}
else if(strcmp(node[i]->element, xml_syslog_group) == 0)
{
os_calloc(1, sizeof(OSMatch),syslog_config[s]->group);
if(!OSMatch_Compile(node[i]->content,
syslog_config[s]->group, 0))
{
merror(REGEX_COMPILE, ARGV0, node[i]->content,
syslog_config[s]->group->error);
return(-1);
}
}
else
{
merror(XML_INVELEM, ARGV0, node[i]->element);
return(OS_INVALID);
}
i++;
}
/* We must have at least one entry set */
if(!syslog_config[s]->server)
{
merror(XML_INV_CSYSLOG, ARGV0);
return(OS_INVALID);
}
gen_config->data = syslog_config;
return(0);
}
int dump_syscheck_entry(syscheck_config *syscheck, const char *entry, int vals, int reg, const char *restrictfile)
{
unsigned int pl = 0;
if (reg == 1) {
#ifdef WIN32
if (syscheck->registry == NULL) {
os_calloc(2, sizeof(registry), syscheck->registry);
syscheck->registry[pl + 1].entry = NULL;
syscheck->registry[pl].arch = vals;
os_strdup(entry, syscheck->registry[pl].entry);
} else {
while (syscheck->registry[pl].entry != NULL) {
pl++;
}
os_realloc(syscheck->registry, (pl + 2) * sizeof(registry),
syscheck->registry);
syscheck->registry[pl + 1].entry = NULL;
syscheck->registry[pl].arch = vals;
os_strdup(entry, syscheck->registry[pl].entry);
}
#endif
}
else {
if (syscheck->dir == NULL) {
os_calloc(2, sizeof(char *), syscheck->dir);
syscheck->dir[pl + 1] = NULL;
os_strdup(entry, syscheck->dir[pl]);
os_calloc(2, sizeof(int), syscheck->opts);
syscheck->opts[pl + 1] = 0;
syscheck->opts[pl] = vals;
os_calloc(2, sizeof(OSMatch *), syscheck->filerestrict);
syscheck->filerestrict[pl] = NULL;
syscheck->filerestrict[pl + 1] = NULL;
} else {
while (syscheck->dir[pl] != NULL) {
pl++;
}
os_realloc(syscheck->dir, (pl + 2) * sizeof(char *),
syscheck->dir);
syscheck->dir[pl + 1] = NULL;
os_strdup(entry, syscheck->dir[pl]);
os_realloc(syscheck->opts, (pl + 2) * sizeof(int),
syscheck->opts);
syscheck->opts[pl + 1] = 0;
syscheck->opts[pl] = vals;
os_realloc(syscheck->filerestrict, (pl + 2) * sizeof(OSMatch *),
syscheck->filerestrict);
syscheck->filerestrict[pl] = NULL;
syscheck->filerestrict[pl + 1] = NULL;
}
if (restrictfile) {
os_calloc(1, sizeof(OSMatch), syscheck->filerestrict[pl]);
if (!OSMatch_Compile(restrictfile, syscheck->filerestrict[pl], 0)) {
OSMatch *ptm;
ptm = syscheck->filerestrict[pl];
merror(REGEX_COMPILE, __local_name, restrictfile,
ptm->error);
free(syscheck->filerestrict[pl]);
syscheck->filerestrict[pl] = NULL;
}
}
}
return (1);
}
int Read_Syscheck(XML_NODE node, void *configp, void *mailp)
{
int i = 0;
/* XML Definitions */
char *xml_directories = "directories";
char *xml_registry = "windows_registry";
char *xml_time = "frequency";
char *xml_scanday = "scan_day";
char *xml_scantime = "scan_time";
char *xml_ignore = "ignore";
char *xml_registry_ignore = "registry_ignore";
char *xml_auto_ignore = "auto_ignore";
char *xml_alert_new_files = "alert_new_files";
char *xml_disabled = "disabled";
char *xml_scan_on_start = "scan_on_start";
char *xml_prefilter_cmd = "prefilter_cmd";
/* Configuration example
<directories check_all="yes">/etc,/usr/bin</directories>
<directories check_owner="yes" check_group="yes" check_perm="yes"
check_sum="yes">/var/log</directories>
*/
config *syscheck;
syscheck = (config *)configp;
while(node[i])
{
if(!node[i]->element)
{
merror(XML_ELEMNULL, ARGV0);
return(OS_INVALID);
}
else if(!node[i]->content)
{
merror(XML_VALUENULL, ARGV0, node[i]->element);
return(OS_INVALID);
}
/* Getting directories */
else if(strcmp(node[i]->element,xml_directories) == 0)
{
char dirs[OS_MAXSTR];
#ifdef WIN32
ExpandEnvironmentStrings(node[i]->content, dirs, sizeof(dirs) -1);
#else
strncpy(dirs, node[i]->content, sizeof(dirs) -1);
#endif
if(!read_attr(syscheck,
dirs,
node[i]->attributes,
node[i]->values))
{
return(OS_INVALID);
}
}
/* Getting windows registry */
else if(strcmp(node[i]->element,xml_registry) == 0)
{
#ifdef WIN32
if(!read_reg(syscheck, node[i]->content))
{
return(OS_INVALID);
}
#endif
}
/* Getting frequency */
else if(strcmp(node[i]->element,xml_time) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
syscheck->time = atoi(node[i]->content);
}
/* Getting scan time */
else if(strcmp(node[i]->element,xml_scantime) == 0)
{
syscheck->scan_time = OS_IsValidUniqueTime(node[i]->content);
if(!syscheck->scan_time)
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
}
/* Getting scan day */
else if(strcmp(node[i]->element,xml_scanday) == 0)
{
syscheck->scan_day = OS_IsValidDay(node[i]->content);
if(!syscheck->scan_day)
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
}
/* Getting if xml_scan_on_start. */
else if(strcmp(node[i]->element, xml_scan_on_start) == 0)
{
if(strcmp(node[i]->content, "yes") == 0)
syscheck->scan_on_start = 1;
else if(strcmp(node[i]->content, "no") == 0)
syscheck->scan_on_start = 0;
else
{
merror(XML_VALUEERR,ARGV0, node[i]->element, node[i]->content);
return(OS_INVALID);
}
}
/* Getting if disabled. */
else if(strcmp(node[i]->element,xml_disabled) == 0)
{
if(strcmp(node[i]->content, "yes") == 0)
syscheck->disabled = 1;
else if(strcmp(node[i]->content, "no") == 0)
syscheck->disabled = 0;
else
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
}
/* Getting file/dir ignore */
else if(strcmp(node[i]->element,xml_ignore) == 0)
{
int ign_size = 0;
/* For Windows, we attempt to expand environment variables. */
#ifdef WIN32
char *new_ig = NULL;
os_calloc(2048, sizeof(char), new_ig);
ExpandEnvironmentStrings(node[i]->content, new_ig, 2047);
free(node[i]->content);
node[i]->content = new_ig;
#endif
/* Adding if regex */
if(node[i]->attributes && node[i]->values)
{
if(node[i]->attributes[0] && node[i]->values[0] &&
(strcmp(node[i]->attributes[0], "type") == 0) &&
(strcmp(node[i]->values[0], "sregex") == 0))
{
OSMatch *mt_pt;
if(!syscheck->ignore_regex)
{
os_calloc(2, sizeof(OSMatch *),syscheck->ignore_regex);
syscheck->ignore_regex[0] = NULL;
syscheck->ignore_regex[1] = NULL;
}
else
{
while(syscheck->ignore_regex[ign_size] != NULL)
ign_size++;
os_realloc(syscheck->ignore_regex,
sizeof(OSMatch *)*(ign_size +2),
syscheck->ignore_regex);
syscheck->ignore_regex[ign_size +1] = NULL;
}
os_calloc(1, sizeof(OSMatch),
syscheck->ignore_regex[ign_size]);
if(!OSMatch_Compile(node[i]->content,
syscheck->ignore_regex[ign_size], 0))
{
mt_pt = (OSMatch *)syscheck->ignore_regex[ign_size];
merror(REGEX_COMPILE, ARGV0, node[i]->content,
mt_pt->error);
return(0);
}
}
else
{
merror(SK_INV_ATTR, ARGV0, node[i]->attributes[0]);
return(OS_INVALID);
}
}
/* Adding if simple entry -- checking for duplicates */
else if(!os_IsStrOnArray(node[i]->content, syscheck->ignore))
{
if(!syscheck->ignore)
{
os_calloc(2, sizeof(char *), syscheck->ignore);
syscheck->ignore[0] = NULL;
syscheck->ignore[1] = NULL;
}
else
{
while(syscheck->ignore[ign_size] != NULL)
ign_size++;
os_realloc(syscheck->ignore,
sizeof(char *)*(ign_size +2),
syscheck->ignore);
syscheck->ignore[ign_size +1] = NULL;
}
os_strdup(node[i]->content,syscheck->ignore[ign_size]);
}
}
/* Getting registry ignore list */
else if(strcmp(node[i]->element,xml_registry_ignore) == 0)
{
#ifdef WIN32
int ign_size = 0;
/* Adding if regex */
if(node[i]->attributes && node[i]->values)
{
if(node[i]->attributes[0] && node[i]->values[0] &&
(strcmp(node[i]->attributes[0], "type") == 0) &&
(strcmp(node[i]->values[0], "sregex") == 0))
{
OSMatch *mt_pt;
if(!syscheck->registry_ignore_regex)
{
os_calloc(2, sizeof(OSMatch *),
syscheck->registry_ignore_regex);
syscheck->registry_ignore_regex[0] = NULL;
syscheck->registry_ignore_regex[1] = NULL;
}
else
{
while(syscheck->registry_ignore_regex[ign_size] !=NULL)
ign_size++;
os_realloc(syscheck->registry_ignore_regex,
sizeof(OSMatch *)*(ign_size +2),
syscheck->registry_ignore_regex);
syscheck->registry_ignore_regex[ign_size +1] = NULL;
}
os_calloc(1, sizeof(OSMatch),
syscheck->registry_ignore_regex[ign_size]);
if(!OSMatch_Compile(node[i]->content,
syscheck->registry_ignore_regex[ign_size], 0))
{
mt_pt = (OSMatch *)
syscheck->registry_ignore_regex[ign_size];
merror(REGEX_COMPILE, ARGV0, node[i]->content,
mt_pt->error);
return(0);
}
}
else
{
merror(SK_INV_ATTR, ARGV0, node[i]->attributes[0]);
return(OS_INVALID);
}
}
/* We do not add duplicated entries */
else if(!os_IsStrOnArray(node[i]->content,
syscheck->registry_ignore))
{
if(!syscheck->registry_ignore)
{
os_calloc(2, sizeof(char *), syscheck->registry_ignore);
syscheck->registry_ignore[0] = NULL;
syscheck->registry_ignore[1] = NULL;
}
else
{
while(syscheck->registry_ignore[ign_size] != NULL)
ign_size++;
os_realloc(syscheck->registry_ignore,
sizeof(char *)*(ign_size +2),
syscheck->registry_ignore);
syscheck->registry_ignore[ign_size +1] = NULL;
}
os_strdup(node[i]->content,syscheck->registry_ignore[ign_size]);
}
#endif
}
else if(strcmp(node[i]->element,xml_auto_ignore) == 0)
{
/* auto_ignore is not read here. */
}
else if(strcmp(node[i]->element,xml_alert_new_files) == 0)
{
/* alert_new_files option is not read here. */
}
else if(strcmp(node[i]->element,xml_prefilter_cmd) == 0)
{
char cmd[OS_MAXSTR];
struct stat statbuf;
#ifdef WIN32
ExpandEnvironmentStrings(node[i]->content, cmd, sizeof(cmd) -1);
#else
strncpy(cmd, node[i]->content, sizeof(cmd)-1);
#endif
if (strlen(cmd) > 0) {
char statcmd[OS_MAXSTR];
char *ix;
strncpy(statcmd, cmd, sizeof(statcmd)-1);
if (NULL != (ix = strchr(statcmd, ' '))) { *ix = '\0'; }
if (stat(statcmd, &statbuf) == 0) {
// More checks needed (perms, owner, etc.)
os_calloc(1, strlen(cmd)+1, syscheck->prefilter_cmd);
strncpy(syscheck->prefilter_cmd, cmd, strlen(cmd));
}
else
{
merror(XML_VALUEERR,ARGV0, node[i]->element, node[i]->content);
return(OS_INVALID);
}
}
}
else
{
merror(XML_INVELEM, ARGV0, node[i]->element);
return(OS_INVALID);
}
i++;
}
return(0);
}
int ReadDecodeXML(const char *file)
{
OS_XML xml;
XML_NODE node = NULL;
/* XML variables */
/* These are the available options for the rule configuration */
const char *xml_plugindecoder = "plugin_decoder";
const char *xml_decoder = "decoder";
const char *xml_decoder_name = "name";
const char *xml_decoder_status = "status";
const char *xml_usename = "use_own_name";
const char *xml_parent = "parent";
const char *xml_program_name = "program_name";
const char *xml_prematch = "prematch";
const char *xml_regex = "regex";
const char *xml_order = "order";
const char *xml_type = "type";
const char *xml_fts = "fts";
const char *xml_ftscomment = "ftscomment";
const char *xml_accumulate = "accumulate";
int i = 0;
OSDecoderInfo *NULL_Decoder_tmp = NULL;
/* Read the XML */
if ((i = OS_ReadXML(file, &xml)) < 0) {
if ((i == -2) && (strcmp(file, XML_LDECODER) == 0)) {
return (-2);
}
merror(XML_ERROR, ARGV0, file, xml.err, xml.err_line);
return (0);
}
/* Apply any variables found */
if (OS_ApplyVariables(&xml) != 0) {
merror(XML_ERROR_VAR, ARGV0, file, xml.err);
return (0);
}
/* Get the root elements */
node = OS_GetElementsbyNode(&xml, NULL);
if (!node) {
if (strcmp(file, XML_LDECODER) != 0) {
merror(XML_ELEMNULL, ARGV0);
return (0);
}
return (-2);
}
/* Zero NULL_decoder */
if (!NULL_Decoder) {
os_calloc(1, sizeof(OSDecoderInfo), NULL_Decoder_tmp);
NULL_Decoder_tmp->id = 0;
NULL_Decoder_tmp->type = SYSLOG;
NULL_Decoder_tmp->name = NULL;
NULL_Decoder_tmp->fts = 0;
NULL_Decoder = NULL_Decoder_tmp;
}
i = 0;
while (node[i]) {
XML_NODE elements = NULL;
OSDecoderInfo *pi;
int j = 0;
char *regex;
char *prematch;
char *p_name;
if (!node[i]->element ||
strcasecmp(node[i]->element, xml_decoder) != 0) {
merror(XML_INVELEM, ARGV0, node[i]->element);
return (0);
}
/* Get name */
if ((!node[i]->attributes) || (!node[i]->values) ||
(!node[i]->values[0]) || (!node[i]->attributes[0]) ||
(strcasecmp(node[i]->attributes[0], xml_decoder_name) != 0)) {
merror(XML_INVELEM, ARGV0, node[i]->element);
return (0);
}
/* Check for additional entries */
if (node[i]->attributes[1] && node[i]->values[1]) {
if (strcasecmp(node[i]->attributes[0], xml_decoder_status) != 0) {
merror(XML_INVELEM, ARGV0, node[i]->element);
return (0);
}
if (node[i]->attributes[2]) {
merror(XML_INVELEM, ARGV0, node[i]->element);
return (0);
}
}
/* Get decoder options */
elements = OS_GetElementsbyNode(&xml, node[i]);
if (elements == NULL) {
merror(XML_ELEMNULL, ARGV0);
return (0);
}
/* Create the OSDecoderInfo */
pi = (OSDecoderInfo *)calloc(1, sizeof(OSDecoderInfo));
if (pi == NULL) {
merror(MEM_ERROR, ARGV0, errno, strerror(errno));
return (0);
}
/* Default values to the list */
pi->parent = NULL;
pi->id = 0;
pi->name = strdup(node[i]->values[0]);
pi->order = NULL;
pi->plugindecoder = NULL;
pi->fts = 0;
pi->accumulate = 0;
pi->type = SYSLOG;
pi->prematch = NULL;
pi->program_name = NULL;
pi->regex = NULL;
pi->use_own_name = 0;
pi->get_next = 0;
pi->regex_offset = 0;
pi->prematch_offset = 0;
regex = NULL;
prematch = NULL;
p_name = NULL;
/* Check if strdup worked */
if (!pi->name) {
merror(MEM_ERROR, ARGV0, errno, strerror(errno));
return (0);
}
/* Add decoder */
if (!addDecoder2list(pi->name)) {
merror(MEM_ERROR, ARGV0, errno, strerror(errno));
free(pi);
return (0);
}
/* Loop over all the elements */
while (elements[j]) {
if (!elements[j]->element) {
merror(XML_ELEMNULL, ARGV0);
return (0);
} else if (!elements[j]->content) {
merror(XML_VALUENULL, ARGV0, elements[j]->element);
return (0);
}
/* Check if it is a child of a rule */
else if (strcasecmp(elements[j]->element, xml_parent) == 0) {
pi->parent = _loadmemory(pi->parent, elements[j]->content);
}
/* Get the regex */
else if (strcasecmp(elements[j]->element, xml_regex) == 0) {
int r_offset;
r_offset = ReadDecodeAttrs(elements[j]->attributes,
elements[j]->values);
if (r_offset & AFTER_ERROR) {
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
/* Only the first regex entry may have an offset */
if (regex && r_offset) {
merror(DUP_REGEX, ARGV0, pi->name);
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
/* regex offset */
if (r_offset) {
pi->regex_offset = r_offset;
}
/* Assign regex */
regex =
_loadmemory(regex,
elements[j]->content);
}
/* Get the pre match */
else if (strcasecmp(elements[j]->element, xml_prematch) == 0) {
int r_offset;
r_offset = ReadDecodeAttrs(
elements[j]->attributes,
elements[j]->values);
if (r_offset & AFTER_ERROR) {
ErrorExit(DEC_REGEX_ERROR, ARGV0, pi->name);
}
/* Only the first prematch entry may have an offset */
if (prematch && r_offset) {
merror(DUP_REGEX, ARGV0, pi->name);
ErrorExit(DEC_REGEX_ERROR, ARGV0, pi->name);
}
if (r_offset) {
pi->prematch_offset = r_offset;
}
prematch =
_loadmemory(prematch,
elements[j]->content);
}
/* Get program name */
else if (strcasecmp(elements[j]->element, xml_program_name) == 0) {
p_name = _loadmemory(p_name, elements[j]->content);
}
/* Get the FTS comment */
else if (strcasecmp(elements[j]->element, xml_ftscomment) == 0) {
}
else if (strcasecmp(elements[j]->element, xml_usename) == 0) {
if (strcmp(elements[j]->content, "true") == 0) {
pi->use_own_name = 1;
}
}
else if (strcasecmp(elements[j]->element, xml_plugindecoder) == 0) {
int ed_c = 0;
for (ed_c = 0; plugin_decoders[ed_c] != NULL; ed_c++) {
if (strcmp(plugin_decoders[ed_c],
elements[j]->content) == 0) {
/* Initialize plugin */
void (*dec_init)(void) = (void (*)(void)) plugin_decoders_init[ed_c];
dec_init();
pi->plugindecoder = (void (*)(void *)) plugin_decoders_exec[ed_c];
break;
}
}
/* Decoder not found */
if (pi->plugindecoder == NULL) {
merror(INV_DECOPTION, ARGV0, elements[j]->element,
elements[j]->content);
return (0);
}
}
/* Get the type */
else if (strcmp(elements[j]->element, xml_type) == 0) {
if (strcmp(elements[j]->content, "firewall") == 0) {
pi->type = FIREWALL;
} else if (strcmp(elements[j]->content, "ids") == 0) {
pi->type = IDS;
} else if (strcmp(elements[j]->content, "web-log") == 0) {
pi->type = WEBLOG;
} else if (strcmp(elements[j]->content, "syslog") == 0) {
pi->type = SYSLOG;
} else if (strcmp(elements[j]->content, "squid") == 0) {
pi->type = SQUID;
} else if (strcmp(elements[j]->content, "windows") == 0) {
pi->type = DECODER_WINDOWS;
} else if (strcmp(elements[j]->content, "host-information") == 0) {
pi->type = HOST_INFO;
} else if (strcmp(elements[j]->content, "ossec") == 0) {
pi->type = OSSEC_RL;
} else {
merror("%s: Invalid decoder type '%s'.",
ARGV0, elements[j]->content);
return (0);
}
}
/* Get the order */
else if (strcasecmp(elements[j]->element, xml_order) == 0) {
char **norder, **s_norder;
int order_int = 0;
/* Maximum number is 8 for the order */
norder = OS_StrBreak(',', elements[j]->content, 8);
s_norder = norder;
os_calloc(8, sizeof(void *), pi->order);
/* Initialize the function pointers */
while (order_int < 8) {
pi->order[order_int] = NULL;
order_int++;
}
order_int = 0;
/* Check the values from the order */
while (*norder) {
if (strstr(*norder, "dstuser") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) DstUser_FP;
} else if (strstr(*norder, "srcuser") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) SrcUser_FP;
}
/* User is an alias to dstuser */
else if (strstr(*norder, "user") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) DstUser_FP;
} else if (strstr(*norder, "srcip") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) SrcIP_FP;
} else if (strstr(*norder, "dstip") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) DstIP_FP;
} else if (strstr(*norder, "srcport") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) SrcPort_FP;
} else if (strstr(*norder, "dstport") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) DstPort_FP;
} else if (strstr(*norder, "protocol") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) Protocol_FP;
} else if (strstr(*norder, "action") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) Action_FP;
} else if (strstr(*norder, "id") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) ID_FP;
} else if (strstr(*norder, "url") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) Url_FP;
} else if (strstr(*norder, "data") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) Data_FP;
} else if (strstr(*norder, "extra_data") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) Data_FP;
} else if (strstr(*norder, "status") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) Status_FP;
} else if (strstr(*norder, "system_name") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) SystemName_FP;
} else if (strstr(*norder, "filename") != NULL) {
pi->order[order_int] = (void (*)(void *, char *)) FileName_FP;
} else {
ErrorExit("decode-xml: Wrong field '%s' in the order"
" of decoder '%s'", *norder, pi->name);
}
free(*norder);
norder++;
order_int++;
}
free(s_norder);
}
else if (strcasecmp(elements[j]->element, xml_accumulate) == 0) {
/* Enable Accumulator */
pi->accumulate = 1;
}
/* Get the FTS order */
else if (strcasecmp(elements[j]->element, xml_fts) == 0) {
char **norder;
char **s_norder;
/* Maximum number is 8 for the FTS */
norder = OS_StrBreak(',', elements[j]->content, 8);
if (norder == NULL) {
ErrorExit(MEM_ERROR, ARGV0, errno, strerror(errno));
}
/* Save the initial point to free later */
s_norder = norder;
/* Check the values from the FTS */
while (*norder) {
if (strstr(*norder, "dstuser") != NULL) {
pi->fts |= FTS_DSTUSER;
}
if (strstr(*norder, "user") != NULL) {
pi->fts |= FTS_DSTUSER;
} else if (strstr(*norder, "srcuser") != NULL) {
pi->fts |= FTS_SRCUSER;
} else if (strstr(*norder, "srcip") != NULL) {
pi->fts |= FTS_SRCIP;
} else if (strstr(*norder, "dstip") != NULL) {
pi->fts |= FTS_DSTIP;
} else if (strstr(*norder, "id") != NULL) {
pi->fts |= FTS_ID;
} else if (strstr(*norder, "location") != NULL) {
pi->fts |= FTS_LOCATION;
} else if (strstr(*norder, "data") != NULL) {
pi->fts |= FTS_DATA;
} else if (strstr(*norder, "extra_data") != NULL) {
pi->fts |= FTS_DATA;
} else if (strstr(*norder, "system_name") != NULL) {
pi->fts |= FTS_SYSTEMNAME;
} else if (strstr(*norder, "name") != NULL) {
pi->fts |= FTS_NAME;
} else {
ErrorExit("decode-xml: Wrong field '%s' in the fts"
" decoder '%s'", *norder, pi->name);
}
free(*norder);
norder++;
}
/* Clear memory here */
free(s_norder);
} else {
merror("%s: Invalid element '%s' for "
"decoder '%s'",
ARGV0,
elements[j]->element,
node[i]->element);
return (0);
}
/* NEXT */
j++;
} /* while(elements[j]) */
OS_ClearNode(elements);
/* Prematch must be set */
if (!prematch && !pi->parent && !p_name) {
merror(DECODE_NOPRE, ARGV0, pi->name);
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
/* If pi->regex is not set, fts must not be set too */
if ((!regex && (pi->fts || pi->order)) || (regex && !pi->order)) {
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
/* For the offsets */
if ((pi->regex_offset & AFTER_PARENT) && !pi->parent) {
merror(INV_OFFSET, ARGV0, "after_parent");
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
if (pi->regex_offset & AFTER_PREMATCH) {
/* If after_prematch is set, but rule have
* no parent, set AFTER_PARENT and unset
* pre_match.
*/
if (!pi->parent) {
pi->regex_offset = 0;
pi->regex_offset |= AFTER_PARENT;
} else if (!prematch) {
merror(INV_OFFSET, ARGV0, "after_prematch");
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
}
/* For the after_regex offset */
if (pi->regex_offset & AFTER_PREVREGEX) {
if (!pi->parent || !regex) {
merror(INV_OFFSET, ARGV0, "after_regex");
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
}
/* Check the prematch offset */
if (pi->prematch_offset) {
/* Only the after parent is allowed */
if (pi->prematch_offset & AFTER_PARENT) {
if (!pi->parent) {
merror(INV_OFFSET, ARGV0, "after_parent");
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
} else {
merror(DEC_REGEX_ERROR, ARGV0, pi->name);
return (0);
}
}
/* Compile the regex/prematch */
if (prematch) {
os_calloc(1, sizeof(OSRegex), pi->prematch);
if (!OSRegex_Compile(prematch, pi->prematch, 0)) {
merror(REGEX_COMPILE, ARGV0, prematch, pi->prematch->error);
return (0);
}
free(prematch);
}
/* Compile the p_name */
if (p_name) {
os_calloc(1, sizeof(OSMatch), pi->program_name);
if (!OSMatch_Compile(p_name, pi->program_name, 0)) {
merror(REGEX_COMPILE, ARGV0, p_name, pi->program_name->error);
return (0);
}
free(p_name);
}
/* We may not have the pi->regex */
if (regex) {
os_calloc(1, sizeof(OSRegex), pi->regex);
if (!OSRegex_Compile(regex, pi->regex, OS_RETURN_SUBSTRING)) {
merror(REGEX_COMPILE, ARGV0, regex, pi->regex->error);
return (0);
}
/* We must have the sub_strings to retrieve the nodes */
if (!pi->regex->sub_strings) {
merror(REGEX_SUBS, ARGV0, regex);
return (0);
}
free(regex);
}
/* Validate arguments */
if (pi->plugindecoder && (pi->regex || pi->order)) {
merror(DECODE_ADD, ARGV0, pi->name);
return (0);
}
/* Add osdecoder to the list */
if (!OS_AddOSDecoder(pi)) {
merror(DECODER_ERROR, ARGV0);
return (0);
}
i++;
} /* while (node[i]) */
/* Clean node and XML structures */
OS_ClearNode(node);
OS_ClearXML(&xml);
return (1);
}
/* Rules_OP_ReadRules, v0.3, 2005/03/21
* Read the log rules.
* v0.3: Fixed many memory problems.
*/
int OS_ReadXMLRules(char *rulefile,
void *(*ruleact_function)(RuleInfo *rule, void *data),
void *data)
{
OS_XML xml;
XML_NODE node = NULL;
/** XML variables **/
/* These are the available options for the rule configuration */
char *xml_group = "group";
char *xml_rule = "rule";
char *xml_regex = "regex";
char *xml_match = "match";
char *xml_decoded = "decoded_as";
char *xml_category = "category";
char *xml_cve = "cve";
char *xml_info = "info";
char *xml_day_time = "time";
char *xml_week_day = "weekday";
char *xml_comment = "description";
char *xml_ignore = "ignore";
char *xml_check_if_ignored = "check_if_ignored";
char *xml_srcip = "srcip";
char *xml_srcport = "srcport";
char *xml_dstip = "dstip";
char *xml_dstport = "dstport";
char *xml_user = "******";
char *xml_url = "url";
char *xml_id = "id";
char *xml_data = "extra_data";
char *xml_hostname = "hostname";
char *xml_program_name = "program_name";
char *xml_status = "status";
char *xml_action = "action";
char *xml_compiled = "compiled_rule";
char *xml_if_sid = "if_sid";
char *xml_if_group = "if_group";
char *xml_if_level = "if_level";
char *xml_fts = "if_fts";
char *xml_if_matched_regex = "if_matched_regex";
char *xml_if_matched_group = "if_matched_group";
char *xml_if_matched_sid = "if_matched_sid";
char *xml_same_source_ip = "same_source_ip";
char *xml_same_src_port = "same_src_port";
char *xml_same_dst_port = "same_dst_port";
char *xml_same_user = "******";
char *xml_same_location = "same_location";
char *xml_same_id = "same_id";
char *xml_dodiff = "check_diff";
char *xml_different_url = "different_url";
char *xml_notsame_source_ip = "not_same_source_ip";
char *xml_notsame_user = "******";
char *xml_notsame_agent = "not_same_agent";
char *xml_notsame_id = "not_same_id";
char *xml_options = "options";
char *rulepath;
int i;
/* If no directory in the rulefile add the default */
if((strchr(rulefile, '/')) == NULL)
{
/* Building the rule file name + path */
i = strlen(RULEPATH) + strlen(rulefile) + 2;
rulepath = (char *)calloc(i,sizeof(char));
if(!rulepath)
{
ErrorExit(MEM_ERROR,ARGV0);
}
snprintf(rulepath,i,"%s/%s",RULEPATH,rulefile);
}
else
{
os_strdup(rulefile, rulepath);
debug1("%s is the rulefile", rulefile);
debug1("Not modifing the rule path");
}
/* Reading the XML */
if(OS_ReadXML(rulepath,&xml) < 0)
{
merror(XML_ERROR, __local_name, rulepath, xml.err, xml.err_line);
free(rulepath);
return(-1);
}
/* Debug wrapper */
debug1("%s: DEBUG: read xml for rule '%s'.", __local_name, rulepath);
/* Applying any variable found */
if(OS_ApplyVariables(&xml) != 0)
{
merror(XML_ERROR_VAR, __local_name, rulepath, xml.err);
return(-1);
}
/* Debug wrapper */
debug1("%s: DEBUG: XML Variables applied.", __local_name);
/* Getting the root elements */
node = OS_GetElementsbyNode(&xml, NULL);
if(!node)
{
merror(CONFIG_ERROR, __local_name, rulepath);
OS_ClearXML(&xml);
return(-1);
}
/* Zeroing the rule memory -- not used anymore */
free(rulepath);
/* Checking if there is any invalid global option */
i = 0;
while(node[i])
{
if(node[i]->element)
{
/* Verifying group */
if(strcasecmp(node[i]->element,xml_group) != 0)
{
merror(RL_INV_ROOT, __local_name, node[i]->element);
OS_ClearXML(&xml);
return(-1);
}
/* Checking group attribute -- only name is allowed */
if((!node[i]->attributes) || (!node[i]->values)||
(!node[i]->values[0]) || (!node[i]->attributes[0]) ||
(strcasecmp(node[i]->attributes[0],"name") != 0) ||
(node[i]->attributes[1]))
{
merror(RL_INV_ROOT, __local_name, node[i]->element);
OS_ClearXML(&xml);
return(-1);
}
}
else
{
merror(XML_READ_ERROR, __local_name);
OS_ClearXML(&xml);
return(-1);
}
i++;
}
/* Getting the rules now */
i = 0;
while(node[i])
{
int j = 0;
XML_NODE rule = NULL;
/* Getting all rules for a global group */
rule = OS_GetElementsbyNode(&xml,node[i]);
if(rule == NULL)
{
i++;
continue;
}
/* Looping on the rules node */
while(rule[j])
{
/* Rules options */
int k = 0;
char *regex = NULL, *match = NULL, *url = NULL,
*if_matched_regex = NULL, *if_matched_group = NULL,
*user = NULL, *id = NULL, *srcport = NULL,
*dstport = NULL, *status = NULL, *hostname = NULL,
*extra_data = NULL, *program_name = NULL;
RuleInfo *config_ruleinfo = NULL;
XML_NODE rule_opt = NULL;
/* Checking if the rule element is correct */
if((!rule[j]->element)||
(strcasecmp(rule[j]->element,xml_rule) != 0))
{
merror(RL_INV_RULE, __local_name, node[i]->element);
OS_ClearXML(&xml);
return(-1);
}
/* Checking for the attributes of the rule */
if((!rule[j]->attributes) || (!rule[j]->values))
{
merror(RL_INV_RULE, __local_name, rulefile);
OS_ClearXML(&xml);
return(-1);
}
/* Attribute block */
config_ruleinfo = _OS_AllocateRule();
if(_OS_GetRulesAttributes(rule[j]->attributes, rule[j]->values,
config_ruleinfo) < 0)
{
merror(RL_INV_ATTR, __local_name, rulefile);
OS_ClearXML(&xml);
return(-1);
}
/* We must have an id or level */
if((config_ruleinfo->sigid == -1)||(config_ruleinfo->level == -1))
{
merror(RL_INV_ATTR, __local_name, rulefile);
OS_ClearXML(&xml);
return(-1);
}
/* Here we can assign the group name to the rule.
* The level is correct so the rule is probably going to
* be fine
*/
os_strdup(node[i]->values[0], config_ruleinfo->group);
/* Getting rules options */
rule_opt = OS_GetElementsbyNode(&xml, rule[j]);
if(rule_opt == NULL)
{
merror(RL_NO_OPT, __local_name, config_ruleinfo->sigid);
OS_ClearXML(&xml);
return(-1);
}
/* Reading the whole rule block */
while(rule_opt[k])
{
if((!rule_opt[k]->element)||(!rule_opt[k]->content))
{
break;
}
else if(strcasecmp(rule_opt[k]->element,xml_regex)==0)
{
regex =
os_LoadString(regex,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_match)==0)
{
match =
os_LoadString(match,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element, xml_decoded) == 0)
{
}
else if(strcasecmp(rule_opt[k]->element,xml_info) == 0)
{
config_ruleinfo->info=
os_LoadString(config_ruleinfo->info,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_day_time) == 0)
{
config_ruleinfo->day_time =
OS_IsValidTime(rule_opt[k]->content);
if(!config_ruleinfo->day_time)
{
merror(INVALID_CONFIG, __local_name,
rule_opt[k]->element,
rule_opt[k]->content);
return(-1);
}
if(!(config_ruleinfo->alert_opts & DO_EXTRAINFO))
config_ruleinfo->alert_opts |= DO_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_week_day) == 0)
{
config_ruleinfo->week_day =
OS_IsValidDay(rule_opt[k]->content);
if(!config_ruleinfo->week_day)
{
merror(INVALID_CONFIG, __local_name,
rule_opt[k]->element,
rule_opt[k]->content);
return(-1);
}
if(!(config_ruleinfo->alert_opts & DO_EXTRAINFO))
config_ruleinfo->alert_opts |= DO_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_group) == 0)
{
config_ruleinfo->group =
os_LoadString(config_ruleinfo->group,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_cve) == 0)
{
config_ruleinfo->cve=
os_LoadString(config_ruleinfo->cve,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_comment) == 0)
{
char *newline;
newline = strchr(rule_opt[k]->content, '\n');
if(newline)
{
*newline = ' ';
}
config_ruleinfo->comment=
os_LoadString(config_ruleinfo->comment,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_srcip)==0)
{
int ip_s = 0;
/* Getting size of source ip list */
while(config_ruleinfo->srcip &&
config_ruleinfo->srcip[ip_s])
{
ip_s++;
}
config_ruleinfo->srcip =
realloc(config_ruleinfo->srcip,
(ip_s + 2) * sizeof(os_ip *));
/* Allocating memory for the individual entries */
os_calloc(1, sizeof(os_ip),
config_ruleinfo->srcip[ip_s]);
config_ruleinfo->srcip[ip_s +1] = NULL;
/* Checking if the ip is valid */
if(!OS_IsValidIP(rule_opt[k]->content,
config_ruleinfo->srcip[ip_s]))
{
merror(INVALID_IP, __local_name, rule_opt[k]->content);
return(-1);
}
if(!(config_ruleinfo->alert_opts & DO_PACKETINFO))
config_ruleinfo->alert_opts |= DO_PACKETINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_dstip)==0)
{
int ip_s = 0;
/* Getting size of source ip list */
while(config_ruleinfo->dstip &&
config_ruleinfo->dstip[ip_s])
{
ip_s++;
}
config_ruleinfo->dstip =
realloc(config_ruleinfo->dstip,
(ip_s + 2) * sizeof(os_ip *));
/* Allocating memory for the individual entries */
os_calloc(1, sizeof(os_ip),
config_ruleinfo->dstip[ip_s]);
config_ruleinfo->dstip[ip_s +1] = NULL;
/* Checking if the ip is valid */
if(!OS_IsValidIP(rule_opt[k]->content,
config_ruleinfo->dstip[ip_s]))
{
merror(INVALID_IP, __local_name, rule_opt[k]->content);
return(-1);
}
if(!(config_ruleinfo->alert_opts & DO_PACKETINFO))
config_ruleinfo->alert_opts |= DO_PACKETINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_user) == 0)
{
user = os_LoadString(user, rule_opt[k]->content);
if(!(config_ruleinfo->alert_opts & DO_EXTRAINFO))
config_ruleinfo->alert_opts |= DO_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_id) == 0)
{
id = os_LoadString(id, rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_srcport) == 0)
{
srcport = os_LoadString(srcport, rule_opt[k]->content);
if(!(config_ruleinfo->alert_opts & DO_PACKETINFO))
config_ruleinfo->alert_opts |= DO_PACKETINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_dstport) == 0)
{
dstport = os_LoadString(dstport, rule_opt[k]->content);
if(!(config_ruleinfo->alert_opts & DO_PACKETINFO))
config_ruleinfo->alert_opts |= DO_PACKETINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_status)==0)
{
status = os_LoadString(status, rule_opt[k]->content);
if(!(config_ruleinfo->alert_opts & DO_EXTRAINFO))
config_ruleinfo->alert_opts |= DO_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_hostname) == 0)
{
hostname = os_LoadString(hostname, rule_opt[k]->content);
if(!(config_ruleinfo->alert_opts & DO_EXTRAINFO))
config_ruleinfo->alert_opts |= DO_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,xml_data)==0)
{
extra_data = os_LoadString(extra_data, rule_opt[k]->content);
if(!(config_ruleinfo->alert_opts & DO_EXTRAINFO))
config_ruleinfo->alert_opts |= DO_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,
xml_program_name)==0)
{
program_name = os_LoadString(program_name,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_action) == 0)
{
config_ruleinfo->action =
os_LoadString(config_ruleinfo->action,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_url) == 0)
{
url= os_LoadString(url, rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element, xml_compiled)==0)
{
/* Not using this in here. */
}
/* We allow these categories so far */
else if(strcasecmp(rule_opt[k]->element, xml_category)==0)
{
if(strcmp(rule_opt[k]->content, "firewall") == 0)
{
config_ruleinfo->category = FIREWALL;
}
else if(strcmp(rule_opt[k]->content, "ids") == 0)
{
config_ruleinfo->category = IDS;
}
else if(strcmp(rule_opt[k]->content, "syslog") == 0)
{
config_ruleinfo->category = SYSLOG;
}
else if(strcmp(rule_opt[k]->content, "web-log") == 0)
{
config_ruleinfo->category = WEBLOG;
}
else if(strcmp(rule_opt[k]->content, "squid") == 0)
{
config_ruleinfo->category = SQUID;
}
else if(strcmp(rule_opt[k]->content,"windows") == 0)
{
config_ruleinfo->category = WINDOWS;
}
else if(strcmp(rule_opt[k]->content,"ossec") == 0)
{
config_ruleinfo->category = OSSEC_RL;
}
else
{
merror(INVALID_CAT, __local_name, rule_opt[k]->content);
return(-1);
}
}
else if(strcasecmp(rule_opt[k]->element,xml_if_sid)==0)
{
config_ruleinfo->if_sid=
os_LoadString(config_ruleinfo->if_sid,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_if_level)==0)
{
if(!OS_StrIsNum(rule_opt[k]->content))
{
merror(INVALID_CONFIG, __local_name,
xml_if_level,
rule_opt[k]->content);
return(-1);
}
config_ruleinfo->if_level=
os_LoadString(config_ruleinfo->if_level,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,xml_if_group)==0)
{
config_ruleinfo->if_group=
os_LoadString(config_ruleinfo->if_group,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,
xml_if_matched_regex) == 0)
{
config_ruleinfo->context = 1;
if_matched_regex=
os_LoadString(if_matched_regex,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,
xml_if_matched_group) == 0)
{
config_ruleinfo->context = 1;
if_matched_group=
os_LoadString(if_matched_group,
rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,
xml_if_matched_sid) == 0)
{
config_ruleinfo->context = 1;
if(!OS_StrIsNum(rule_opt[k]->content))
{
merror(INVALID_CONFIG, __local_name,
rule_opt[k]->element,
rule_opt[k]->content);
return(-1);
}
config_ruleinfo->if_matched_sid =
atoi(rule_opt[k]->content);
}
else if(strcasecmp(rule_opt[k]->element,
xml_same_source_ip)==0)
{
config_ruleinfo->context_opts|= SAME_SRCIP;
}
else if(strcasecmp(rule_opt[k]->element,
xml_same_src_port)==0)
{
config_ruleinfo->context_opts|= SAME_SRCPORT;
if(!(config_ruleinfo->alert_opts & SAME_EXTRAINFO))
config_ruleinfo->alert_opts |= SAME_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,
xml_dodiff)==0)
{
config_ruleinfo->context++;
config_ruleinfo->context_opts|= SAME_DODIFF;
if(!(config_ruleinfo->alert_opts & DO_EXTRAINFO))
{
config_ruleinfo->alert_opts |= DO_EXTRAINFO;
}
}
else if(strcasecmp(rule_opt[k]->element,
xml_same_dst_port) == 0)
{
config_ruleinfo->context_opts|= SAME_DSTPORT;
if(!(config_ruleinfo->alert_opts & SAME_EXTRAINFO))
config_ruleinfo->alert_opts |= SAME_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,
xml_notsame_source_ip)==0)
{
config_ruleinfo->context_opts&= NOT_SAME_SRCIP;
}
else if(strcmp(rule_opt[k]->element, xml_same_id) == 0)
{
config_ruleinfo->context_opts|= SAME_ID;
}
else if(strcmp(rule_opt[k]->element,
xml_different_url) == 0)
{
config_ruleinfo->context_opts|= DIFFERENT_URL;
if(!(config_ruleinfo->alert_opts & SAME_EXTRAINFO))
config_ruleinfo->alert_opts |= SAME_EXTRAINFO;
}
else if(strcmp(rule_opt[k]->element,xml_notsame_id) == 0)
{
config_ruleinfo->context_opts&= NOT_SAME_ID;
}
else if(strcasecmp(rule_opt[k]->element,
xml_fts) == 0)
{
config_ruleinfo->alert_opts |= DO_FTS;
}
else if(strcasecmp(rule_opt[k]->element,
xml_same_user)==0)
{
config_ruleinfo->context_opts|= SAME_USER;
if(!(config_ruleinfo->alert_opts & SAME_EXTRAINFO))
config_ruleinfo->alert_opts |= SAME_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,
xml_notsame_user)==0)
{
config_ruleinfo->context_opts&= NOT_SAME_USER;
}
else if(strcasecmp(rule_opt[k]->element,
xml_same_location)==0)
{
config_ruleinfo->context_opts|= SAME_LOCATION;
if(!(config_ruleinfo->alert_opts & SAME_EXTRAINFO))
config_ruleinfo->alert_opts |= SAME_EXTRAINFO;
}
else if(strcasecmp(rule_opt[k]->element,
xml_notsame_agent)==0)
{
config_ruleinfo->context_opts&= NOT_SAME_AGENT;
}
else if(strcasecmp(rule_opt[k]->element,
xml_options) == 0)
{
if(strcmp("alert_by_email",
rule_opt[k]->content) == 0)
{
if(!(config_ruleinfo->alert_opts & DO_MAILALERT))
{
config_ruleinfo->alert_opts|= DO_MAILALERT;
}
}
else if(strcmp("no_email_alert",
rule_opt[k]->content) == 0)
{
if(config_ruleinfo->alert_opts & DO_MAILALERT)
{
config_ruleinfo->alert_opts&=0xfff-DO_MAILALERT;
}
}
else if(strcmp("log_alert",
rule_opt[k]->content) == 0)
{
if(!(config_ruleinfo->alert_opts & DO_LOGALERT))
{
config_ruleinfo->alert_opts|= DO_LOGALERT;
}
}
else if(strcmp("no_log", rule_opt[k]->content) == 0)
{
if(config_ruleinfo->alert_opts & DO_LOGALERT)
{
config_ruleinfo->alert_opts &=0xfff-DO_LOGALERT;
}
}
else if(strcmp("no_ar", rule_opt[k]->content) == 0)
{
if(!(config_ruleinfo->alert_opts & NO_AR))
{
config_ruleinfo->alert_opts|= NO_AR;
}
}
else
{
merror(XML_VALUEERR, __local_name, xml_options,
rule_opt[k]->content);
merror(INVALID_ELEMENT, __local_name,
rule_opt[k]->element,
rule_opt[k]->content);
OS_ClearXML(&xml);
return(-1);
}
}
else if(strcasecmp(rule_opt[k]->element,
xml_ignore) == 0)
{
if(strstr(rule_opt[k]->content, "user") != NULL)
{
config_ruleinfo->ignore|=FTS_USER;
}
if(strstr(rule_opt[k]->content, "srcip") != NULL)
{
config_ruleinfo->ignore|=FTS_SRCIP;
}
if(strstr(rule_opt[k]->content, "dstip") != NULL)
{
config_ruleinfo->ignore|=FTS_DSTIP;
}
if(strstr(rule_opt[k]->content, "id") != NULL)
{
config_ruleinfo->ignore|=FTS_ID;
}
if(strstr(rule_opt[k]->content,"location")!= NULL)
{
config_ruleinfo->ignore|=FTS_LOCATION;
}
if(strstr(rule_opt[k]->content,"data")!= NULL)
{
config_ruleinfo->ignore|=FTS_DATA;
}
if(strstr(rule_opt[k]->content, "name") != NULL)
{
config_ruleinfo->ignore|=FTS_NAME;
}
if(!config_ruleinfo->ignore)
{
merror(INVALID_ELEMENT, __local_name,
rule_opt[k]->element,
rule_opt[k]->content);
return(-1);
}
}
else if(strcasecmp(rule_opt[k]->element,
xml_check_if_ignored) == 0)
{
if(strstr(rule_opt[k]->content, "user") != NULL)
{
config_ruleinfo->ckignore|=FTS_USER;
}
if(strstr(rule_opt[k]->content, "srcip") != NULL)
{
config_ruleinfo->ckignore|=FTS_SRCIP;
}
if(strstr(rule_opt[k]->content, "dstip") != NULL)
{
config_ruleinfo->ckignore|=FTS_DSTIP;
}
if(strstr(rule_opt[k]->content, "id") != NULL)
{
config_ruleinfo->ckignore|=FTS_ID;
}
if(strstr(rule_opt[k]->content,"location")!= NULL)
{
config_ruleinfo->ckignore|=FTS_LOCATION;
}
if(strstr(rule_opt[k]->content,"data")!= NULL)
{
config_ruleinfo->ignore|=FTS_DATA;
}
if(strstr(rule_opt[k]->content, "name") != NULL)
{
config_ruleinfo->ckignore|=FTS_NAME;
}
if(!config_ruleinfo->ckignore)
{
merror(INVALID_ELEMENT, __local_name,
rule_opt[k]->element,
rule_opt[k]->content);
return(-1);
}
}
/* XXX As new features are added into ../analysisd/rules.c
* This code needs to be updated to match, but is out of date
* it's become a nightmare to correct with out just make the
* problem for someone later.
*
* This hack will allow any crap xml to pass without an
* error. The correct fix is to refactor the code so that
* ../analysisd/rules* and this code are not duplicates
*
else
{
merror(XML_INVELEM, __local_name, rule_opt[k]->element);
OS_ClearXML(&xml);
return(-1);
}
*/
k++;
}
/* Checking for a valid use of frequency */
if((config_ruleinfo->context_opts ||
config_ruleinfo->frequency) &&
!config_ruleinfo->context)
{
merror("%s: Invalid use of frequency/context options. "
"Missing if_matched on rule '%d'.",
__local_name, config_ruleinfo->sigid);
OS_ClearXML(&xml);
return(-1);
}
/* If if_matched_group we must have a if_sid or if_group */
if(if_matched_group)
{
if(!config_ruleinfo->if_sid && !config_ruleinfo->if_group)
{
os_strdup(if_matched_group, config_ruleinfo->if_group);
}
}
/* If_matched_sid, we need to get the if_sid */
if(config_ruleinfo->if_matched_sid &&
!config_ruleinfo->if_sid &&
!config_ruleinfo->if_group)
{
os_calloc(16, sizeof(char), config_ruleinfo->if_sid);
snprintf(config_ruleinfo->if_sid, 15, "%d",
config_ruleinfo->if_matched_sid);
}
/* Checking the regexes */
if(regex)
{
os_calloc(1, sizeof(OSRegex), config_ruleinfo->regex);
if(!OSRegex_Compile(regex, config_ruleinfo->regex, 0))
{
merror(REGEX_COMPILE, __local_name, regex,
config_ruleinfo->regex->error);
return(-1);
}
free(regex);
regex = NULL;
}
/* Adding in match */
if(match)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->match);
if(!OSMatch_Compile(match, config_ruleinfo->match, 0))
{
merror(REGEX_COMPILE, __local_name, match,
config_ruleinfo->match->error);
return(-1);
}
free(match);
match = NULL;
}
/* Adding in id */
if(id)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->id);
if(!OSMatch_Compile(id, config_ruleinfo->id, 0))
{
merror(REGEX_COMPILE, __local_name, id,
config_ruleinfo->id->error);
return(-1);
}
free(id);
id = NULL;
}
/* Adding srcport */
if(srcport)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->srcport);
if(!OSMatch_Compile(srcport, config_ruleinfo->srcport, 0))
{
merror(REGEX_COMPILE, __local_name, srcport,
config_ruleinfo->id->error);
return(-1);
}
free(srcport);
srcport = NULL;
}
/* Adding dstport */
if(dstport)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->dstport);
if(!OSMatch_Compile(dstport, config_ruleinfo->dstport, 0))
{
merror(REGEX_COMPILE, __local_name, dstport,
config_ruleinfo->id->error);
return(-1);
}
free(dstport);
dstport = NULL;
}
/* Adding in status */
if(status)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->status);
if(!OSMatch_Compile(status, config_ruleinfo->status, 0))
{
merror(REGEX_COMPILE, __local_name, status,
config_ruleinfo->status->error);
return(-1);
}
free(status);
status = NULL;
}
/* Adding in hostname */
if(hostname)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->hostname);
if(!OSMatch_Compile(hostname, config_ruleinfo->hostname,0))
{
merror(REGEX_COMPILE, __local_name, hostname,
config_ruleinfo->hostname->error);
return(-1);
}
free(hostname);
hostname = NULL;
}
/* Adding extra data */
if(extra_data)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->extra_data);
if(!OSMatch_Compile(extra_data,
config_ruleinfo->extra_data, 0))
{
merror(REGEX_COMPILE, __local_name, extra_data,
config_ruleinfo->extra_data->error);
return(-1);
}
free(extra_data);
extra_data = NULL;
}
/* Adding in program name */
if(program_name)
{
os_calloc(1,sizeof(OSMatch),config_ruleinfo->program_name);
if(!OSMatch_Compile(program_name,
config_ruleinfo->program_name,0))
{
merror(REGEX_COMPILE, __local_name, program_name,
config_ruleinfo->program_name->error);
return(-1);
}
free(program_name);
program_name = NULL;
}
/* Adding in user */
if(user)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->user);
if(!OSMatch_Compile(user, config_ruleinfo->user, 0))
{
merror(REGEX_COMPILE, __local_name, user,
config_ruleinfo->user->error);
return(-1);
}
free(user);
user = NULL;
}
/* Adding in url */
if(url)
{
os_calloc(1, sizeof(OSMatch), config_ruleinfo->url);
if(!OSMatch_Compile(url, config_ruleinfo->url, 0))
{
merror(REGEX_COMPILE, __local_name, url,
config_ruleinfo->url->error);
return(-1);
}
free(url);
url = NULL;
}
/* Adding matched_group */
if(if_matched_group)
{
os_calloc(1,sizeof(OSMatch),config_ruleinfo->if_matched_group);
if(!OSMatch_Compile(if_matched_group,
config_ruleinfo->if_matched_group,0))
{
merror(REGEX_COMPILE, __local_name, if_matched_group,
config_ruleinfo->if_matched_group->error);
return(-1);
}
free(if_matched_group);
if_matched_group = NULL;
}
/* Adding matched_regex */
if(if_matched_regex)
{
os_calloc(1, sizeof(OSRegex),
config_ruleinfo->if_matched_regex);
if(!OSRegex_Compile(if_matched_regex,
config_ruleinfo->if_matched_regex, 0))
{
merror(REGEX_COMPILE, __local_name, if_matched_regex,
config_ruleinfo->if_matched_regex->error);
return(-1);
}
free(if_matched_regex);
if_matched_regex = NULL;
}
/* Calling the function provided. */
ruleact_function(config_ruleinfo, data);
j++; /* next rule */
} /* while(rule[j]) */
OS_ClearNode(rule);
i++;
} /* while (node[i]) */
/* Cleaning global node */
OS_ClearNode(node);
OS_ClearXML(&xml);
/* Done over here */
return(0);
}
/** main **/
int main(int argc, char **argv)
{
char *pattern;
char msg[OS_MAXSTR +1];
memset(msg, '\0', OS_MAXSTR +1);
OSRegex regex;
OSMatch matcher;
OS_SetName(ARGV0);
/* user arguments */
if(argc != 2)
{
helpmsg();
return(-1);
}
/* User options */
if(strcmp(argv[1], "-h") == 0)
{
helpmsg();
return(-1);
}
os_strdup(argv[1], pattern);
if(!OSRegex_Compile(pattern, ®ex, 0))
{
printf("pattern does not compile with OSRegex_Compile\n");
return(-1);
}
if(!OSMatch_Compile(pattern, &matcher, 0))
{
printf("pattern does not compile with OSMatch_Compile\n");
return(-1);
}
while((fgets(msg, OS_MAXSTR, stdin)) != NULL)
{
/* Removing new line. */
if(msg[strlen(msg) -1] == '\n')
msg[strlen(msg) -1] = '\0';
/* Make sure we ignore blank lines. */
if(strlen(msg) < 2) { continue; }
if(OSRegex_Execute(msg, ®ex))
printf("+OSRegex_Execute: %s\n",msg);
/*
else
printf("-OSRegex_Execute: \n");
*/
if(OS_Regex(pattern, msg))
printf("+OS_Regex : %s\n", msg);
/*
else
printf("-OS_Regex: \n");
*/
if(OSMatch_Execute(msg, strlen(msg), &matcher))
printf("+OSMatch_Compile: %s\n", msg);
if(OS_Match2(pattern, msg))
printf("+OS_Match2 : %s\n", msg);
}
return(0);
}
int Read_EmailAlerts(XML_NODE node, void *configp, void *mailp)
{
int i = 0;
int granto_size = 1;
/* XML definitions */
char *xml_email_to = "email_to";
char *xml_email_format = "format";
char *xml_email_level = "level";
char *xml_email_id = "rule_id";
char *xml_email_group = "group";
char *xml_email_location = "event_location";
char *xml_email_donotdelay = "do_not_delay";
char *xml_email_donotgroup = "do_not_group";
MailConfig *Mail;
Mail = (MailConfig *)mailp;
if(!Mail)
{
return(0);
}
/* Getting Granular mail_to size */
if(Mail && Mail->gran_to)
{
char **ww;
ww = Mail->gran_to;
while(*ww != NULL)
{
ww++;
granto_size++;
}
}
if(Mail)
{
os_realloc(Mail->gran_to,
sizeof(char *)*(granto_size +1), Mail->gran_to);
os_realloc(Mail->gran_id,
sizeof(int *)*(granto_size +1), Mail->gran_id);
os_realloc(Mail->gran_level,
sizeof(int)*(granto_size +1), Mail->gran_level);
os_realloc(Mail->gran_set,
sizeof(int)*(granto_size +1), Mail->gran_set);
os_realloc(Mail->gran_format,
sizeof(int)*(granto_size +1), Mail->gran_format);
os_realloc(Mail->gran_location,
sizeof(OSMatch)*(granto_size +1), Mail->gran_location);
os_realloc(Mail->gran_group,
sizeof(OSMatch)*(granto_size +1), Mail->gran_group);
Mail->gran_to[granto_size -1] = NULL;
Mail->gran_to[granto_size] = NULL;
Mail->gran_id[granto_size -1] = NULL;
Mail->gran_id[granto_size] = NULL;
Mail->gran_location[granto_size -1] = NULL;
Mail->gran_location[granto_size] = NULL;
Mail->gran_group[granto_size -1] = NULL;
Mail->gran_group[granto_size] = NULL;
Mail->gran_level[granto_size -1] = 0;
Mail->gran_level[granto_size] = 0;
Mail->gran_format[granto_size -1] = FULL_FORMAT;
Mail->gran_format[granto_size] = FULL_FORMAT;
Mail->gran_set[granto_size -1] = 0;
Mail->gran_set[granto_size] = 0;
}
while(node[i])
{
if(!node[i]->element)
{
merror(XML_ELEMNULL, ARGV0);
return(OS_INVALID);
}
else if(!node[i]->content)
{
merror(XML_VALUENULL, ARGV0, node[i]->element);
return(OS_INVALID);
}
/* Mail notification */
else if(strcmp(node[i]->element, xml_email_level) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
Mail->gran_level[granto_size -1] = atoi(node[i]->content);
}
else if(strcmp(node[i]->element, xml_email_to) == 0)
{
os_strdup(node[i]->content, Mail->gran_to[granto_size -1]);
}
else if(strcmp(node[i]->element, xml_email_id) == 0)
{
int r_id = 0;
char *str_pt = node[i]->content;
while(*str_pt != '\0')
{
/* We allow spaces in between */
if(*str_pt == ' ')
{
str_pt++;
continue;
}
/* If is digit, we get the value
* and search for the next digit
* available
*/
else if(isdigit((int)*str_pt))
{
int id_i = 0;
r_id = atoi(str_pt);
debug1("%s: DEBUG: Adding '%d' to granular e-mail",
ARGV0, r_id);
if(!Mail->gran_id[granto_size -1])
{
os_calloc(2,sizeof(int),Mail->gran_id[granto_size -1]);
Mail->gran_id[granto_size -1][0] = 0;
Mail->gran_id[granto_size -1][1] = 0;
}
else
{
while(Mail->gran_id[granto_size -1][id_i] != 0)
{
id_i++;
}
os_realloc(Mail->gran_id[granto_size -1],
(id_i +2) * sizeof(int),
Mail->gran_id[granto_size -1]);
Mail->gran_id[granto_size -1][id_i +1] = 0;
}
Mail->gran_id[granto_size -1][id_i] = r_id;
str_pt = strchr(str_pt, ',');
if(str_pt)
{
str_pt++;
}
else
{
break;
}
}
/* Checking for duplicate commas */
else if(*str_pt == ',')
{
str_pt++;
continue;
}
else
{
break;
}
}
}
else if(strcmp(node[i]->element, xml_email_format) == 0)
{
if(strcmp(node[i]->content, "sms") == 0)
{
Mail->gran_format[granto_size -1] = SMS_FORMAT;
}
else if(strcmp(node[i]->content, "default") == 0)
{
/* Default is full format */
}
else
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
}
else if(strcmp(node[i]->element, xml_email_donotdelay) == 0)
{
if((Mail->gran_format[granto_size -1] != SMS_FORMAT) &&
(Mail->gran_format[granto_size -1] != DONOTGROUP))
{
Mail->gran_format[granto_size -1] = FORWARD_NOW;
}
}
else if(strcmp(node[i]->element, xml_email_donotgroup) == 0)
{
if(Mail->gran_format[granto_size -1] != SMS_FORMAT)
{
Mail->gran_format[granto_size -1] = DONOTGROUP;
}
}
else if(strcmp(node[i]->element, xml_email_location) == 0)
{
os_calloc(1, sizeof(OSMatch),Mail->gran_location[granto_size -1]);
if(!OSMatch_Compile(node[i]->content,
Mail->gran_location[granto_size -1], 0))
{
merror(REGEX_COMPILE, ARGV0, node[i]->content,
Mail->gran_location[granto_size -1]->error);
return(-1);
}
}
else if(strcmp(node[i]->element, xml_email_group) == 0)
{
os_calloc(1, sizeof(OSMatch),Mail->gran_group[granto_size -1]);
if(!OSMatch_Compile(node[i]->content,
Mail->gran_group[granto_size -1], 0))
{
merror(REGEX_COMPILE, ARGV0, node[i]->content,
Mail->gran_group[granto_size -1]->error);
return(-1);
}
}
else
{
merror(XML_INVELEM, ARGV0, node[i]->element);
return(OS_INVALID);
}
i++;
}
/* We must have at least one entry set */
if((Mail->gran_location[granto_size -1] == NULL &&
Mail->gran_level[granto_size -1] == 0 &&
Mail->gran_group[granto_size -1] == NULL &&
Mail->gran_id[granto_size -1] == NULL &&
Mail->gran_format[granto_size -1] == FULL_FORMAT) ||
Mail->gran_to[granto_size -1] == NULL)
{
merror(XML_INV_GRAN_MAIL, ARGV0);
return(OS_INVALID);
}
return(0);
}
/* GlobalConf v0.2: 2005/03/03
* v0.2: Changing to support the new OS_XML
*/
int Read_Global(XML_NODE node, void *configp, void *mailp)
{
int i = 0;
/* White list size */
int white_size = 1;
int hostname_white_size = 1;
int mailto_size = 1;
/* XML definitions */
char *xml_mailnotify = "email_notification";
char *xml_logall = "logall";
char *xml_integrity = "integrity_checking";
char *xml_rootcheckd = "rootkit_detection";
char *xml_hostinfo = "host_information";
char *xml_picviz = "picviz_output";
char *xml_picviz_socket = "picviz_socket";
char *xml_prelude = "prelude_output";
char *xml_prelude_profile = "prelude_profile";
char *xml_prelude_log_level = "prelude_log_level";
char *xml_zeromq_output = "zeromq_output";
char *xml_zeromq_output_uri = "zeromq_uri";
char *xml_stats = "stats";
char *xml_memorysize = "memory_size";
char *xml_white_list = "white_list";
char *xml_compress_alerts = "compress_alerts";
char *xml_custom_alert_output = "custom_alert_output";
char *xml_emailto = "email_to";
char *xml_emailfrom = "email_from";
char *xml_emailidsname = "email_idsname";
char *xml_smtpserver = "smtp_server";
char *xml_mailmaxperhour = "email_maxperhour";
#ifdef GEOIP
/* GeoIP */
char *xml_geoip_db_path = "geoip_db_path";
char *xml_geoip6_db_path = "geoip6_db_path";
#endif
_Config *Config;
MailConfig *Mail;
Config = (_Config *)configp;
Mail = (MailConfig *)mailp;
/* Getting right white_size */
if(Config && Config->white_list)
{
os_ip **ww;
ww = Config->white_list;
while(*ww != NULL)
{
white_size++;
ww++;
}
}
/* Getting right white_size */
if(Config && Config->hostname_white_list)
{
OSMatch **ww;
ww = Config->hostname_white_list;
while(*ww != NULL)
{
hostname_white_size++;
ww++;
}
}
/* Getting mail_to size */
if(Mail && Mail->to)
{
char **ww;
ww = Mail->to;
while(*ww != NULL)
{
mailto_size++;
ww++;
}
}
while(node[i])
{
if(!node[i]->element)
{
merror(XML_ELEMNULL, ARGV0);
return(OS_INVALID);
}
else if(!node[i]->content)
{
merror(XML_VALUENULL, ARGV0, node[i]->element);
return(OS_INVALID);
}
else if(strcmp(node[i]->element, xml_custom_alert_output) == 0)
{
if(Config)
{
Config->custom_alert_output= 1;
os_strdup(node[i]->content, Config->custom_alert_output_format);
}
}
/* Mail notification */
else if(strcmp(node[i]->element, xml_mailnotify) == 0)
{
if(strcmp(node[i]->content, "yes") == 0)
{
if(Config) Config->mailnotify = 1;
if(Mail) Mail->mn = 1;
}
else if(strcmp(node[i]->content, "no") == 0)
{
if(Config) Config->mailnotify = 0;
if(Mail) Mail->mn = 0;
}
else
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
}
/* Picviz support */
else if(strcmp(node[i]->element, xml_picviz) == 0)
{
if(strcmp(node[i]->content, "yes") == 0)
{
if(Config) Config->picviz = 1;
}
else if(strcmp(node[i]->content, "no") == 0)
{
if(Config) Config->picviz = 0;
}
else
{
merror(XML_VALUEERR,ARGV0,node[i]->element, node[i]->content);
return(OS_INVALID);
}
}
else if(strcmp(node[i]->element, xml_picviz_socket) == 0)
{
if(Config)
{
os_strdup(node[i]->content, Config->picviz_socket);
}
}
/* Prelude support */
else if(strcmp(node[i]->element, xml_prelude) == 0)
{
if(strcmp(node[i]->content, "yes") == 0)
{
if(Config) Config->prelude = 1;
}
else if(strcmp(node[i]->content, "no") == 0)
{
if(Config) Config->prelude = 0;
}
else
{
merror(XML_VALUEERR,ARGV0,node[i]->element, node[i]->content);
return(OS_INVALID);
}
}
else if(strcmp(node[i]->element, xml_prelude_profile) == 0)
{
if(Config)
{
Config->prelude_profile = strdup(node[i]->content);
}
}
else if(strcmp(node[i]->element, xml_prelude_log_level) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
if(Config)
{
Config->prelude_log_level = atoi(node[i]->content);
}
}
/* ZeroMQ output */
else if(strcmp(node[i]->element, xml_zeromq_output) == 0)
{
if(strcmp(node[i]->content, "yes") == 0)
{
if(Config) Config->zeromq_output = 1;
}
else if(strcmp(node[i]->content, "no") == 0)
{
if(Config) Config->zeromq_output = 0;
}
else
{
merror(XML_VALUEERR,ARGV0,node[i]->element, node[i]->content);
return(OS_INVALID);
}
}
else if(strcmp(node[i]->element, xml_zeromq_output_uri) == 0)
{
if(Config)
{
Config->zeromq_output_uri = strdup(node[i]->content);
}
}
/* Log all */
else if(strcmp(node[i]->element, xml_logall) == 0)
{
if(strcmp(node[i]->content, "yes") == 0)
{ if(Config) Config->logall = 1;}
else if(strcmp(node[i]->content, "no") == 0)
{if(Config) Config->logall = 0;}
else
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
}
/* compress alerts */
else if(strcmp(node[i]->element, xml_compress_alerts) == 0)
{
/* removed from here -- compatility issues only */
}
/* Integrity */
else if(strcmp(node[i]->element, xml_integrity) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
if(Config)
{
Config->integrity = atoi(node[i]->content);
}
}
/* rootcheck */
else if(strcmp(node[i]->element, xml_rootcheckd) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
if(Config)
{
Config->rootcheck = atoi(node[i]->content);
}
}
/* hostinfo */
else if(strcmp(node[i]->element, xml_hostinfo) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
if(Config)
{
Config->hostinfo = atoi(node[i]->content);
}
}
/* stats */
else if(strcmp(node[i]->element, xml_stats) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
if(Config)
{
Config->stats = atoi(node[i]->content);
}
}
else if(strcmp(node[i]->element, xml_memorysize) == 0)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
if(Config)
{
Config->memorysize = atoi(node[i]->content);
}
}
/* whitelist */
else if(strcmp(node[i]->element, xml_white_list) == 0)
{
/* Windows do not need it */
#ifndef WIN32
char *ip_address_regex =
"^[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}/?"
"([0-9]{0,2}|[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3})$";
if(Config && OS_PRegex(node[i]->content, ip_address_regex))
{
white_size++;
Config->white_list =
realloc(Config->white_list, sizeof(os_ip *)*white_size);
if(!Config->white_list)
{
merror(MEM_ERROR, ARGV0);
return(OS_INVALID);
}
os_calloc(1, sizeof(os_ip), Config->white_list[white_size -2]);
Config->white_list[white_size -1] = NULL;
if(!OS_IsValidIP(node[i]->content,
Config->white_list[white_size -2]))
{
merror(INVALID_IP, ARGV0,
node[i]->content);
return(OS_INVALID);
}
}
/* Adding hostname */
else if(Config)
{
hostname_white_size++;
Config->hostname_white_list =
realloc(Config->hostname_white_list,
sizeof(OSMatch *)*hostname_white_size);
if(!Config->hostname_white_list)
{
merror(MEM_ERROR, ARGV0);
return(OS_INVALID);
}
os_calloc(1,
sizeof(OSMatch),
Config->hostname_white_list[hostname_white_size -2]);
Config->hostname_white_list[hostname_white_size -1] = NULL;
if(!OSMatch_Compile(
node[i]->content,
Config->hostname_white_list[hostname_white_size -2],
0))
{
merror(REGEX_COMPILE, ARGV0, node[i]->content,
Config->hostname_white_list
[hostname_white_size -2]->error);
return(-1);
}
}
#endif
}
/* For the email now
* email_to, email_from, idsname, smtp_Server and maxperhour.
* We will use a separate structure for that.
*/
else if(strcmp(node[i]->element, xml_emailto) == 0)
{
#ifndef WIN32
if(!OS_PRegex(node[i]->content, "[a-zA-Z0-9\\._-]+@[a-zA-Z0-9\\._-]"))
{
merror("%s: ERROR: Invalid Email address: %s.", ARGV0, node[i]->content);
return(OS_INVALID);
}
#endif
if(Mail)
{
mailto_size++;
Mail->to = realloc(Mail->to, sizeof(char *)*mailto_size);
if(!Mail->to)
{
merror(MEM_ERROR, ARGV0);
return(OS_INVALID);
}
os_strdup(node[i]->content, Mail->to[mailto_size - 2]);
Mail->to[mailto_size - 1] = NULL;
}
}
else if(strcmp(node[i]->element, xml_emailfrom) == 0)
{
if(Mail)
{
if(Mail->from)
{
free(Mail->from);
}
os_strdup(node[i]->content, Mail->from);
}
}
else if(strcmp(node[i]->element, xml_emailidsname) == 0)
{
if(Mail)
{
if(Mail->idsname)
{
free(Mail->idsname);
}
os_strdup(node[i]->content, Mail->idsname);
}
}
else if(strcmp(node[i]->element, xml_smtpserver) == 0)
{
#ifndef WIN32
if(Mail && (Mail->mn))
{
Mail->smtpserver = OS_GetHost(node[i]->content, 5);
if(!Mail->smtpserver)
{
merror(INVALID_SMTP, ARGV0, node[i]->content);
return(OS_INVALID);
}
}
#endif
}
else if(strcmp(node[i]->element, xml_mailmaxperhour) == 0)
{
if(Mail)
{
if(!OS_StrIsNum(node[i]->content))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
Mail->maxperhour = atoi(node[i]->content);
if((Mail->maxperhour <= 0) || (Mail->maxperhour > 9999))
{
merror(XML_VALUEERR,ARGV0,node[i]->element,node[i]->content);
return(OS_INVALID);
}
}
}
#ifdef GEOIP
/* GeoIP v4 DB location */
else if(strcmp(node[i]->element, xml_geoip_db_path) == 0)
{
if(Config)
{
os_strdup(node[i]->content, Config->geoip_db_path);
}
}
/* GeoIP v6 DB location */
else if(strcmp(node[i]->element, xml_geoip6_db_path) == 0)
{
if(Config)
{
os_strdup(node[i]->content, Config->geoip6_db_path);
}
}
#endif
else
{
merror(XML_INVELEM, ARGV0, node[i]->element);
return(OS_INVALID);
}
i++;
}
return(0);
}
