4 #include "http_config.h"
6 #include "http_protocol.h"
8 #include "apr_optional.h"
12 /* -- Generic generators/validators from re_variables.c -- */
15 * Generates a variable from a string and a length.
17 static int var_simple_generate_ex(msre_var *var, apr_table_t *vartab, apr_pool_t *mptmp,
18 const char *value, int value_len)
20 msre_var *rvar = NULL;
22 if (value == NULL) return 0;
24 rvar = apr_pmemdup(mptmp, var, sizeof(msre_var));
26 rvar->value_len = value_len;
27 apr_table_addn(vartab, rvar->name, (void *)rvar);
33 * Generates a variable from a NULL-terminated string.
35 static int var_simple_generate(msre_var *var, apr_table_t *vartab, apr_pool_t *mptmp,
38 if (value == NULL) return 0;
39 return var_simple_generate_ex(var, vartab, mptmp, value, strlen(value));
43 /* -- Module specific code -- */
46 * Create a silly variable with value = a.b.c.d:port
48 static int var_remote_addr_port_generate(modsec_rec *msr, msre_var *var, msre_rule *rule,
49 apr_table_t *vartab, apr_pool_t *mptmp)
51 const char *value = apr_psprintf(mptmp, "%s:%d", msr->remote_addr, msr->remote_port);
53 return var_simple_generate(var, vartab, mptmp, value);
56 static int hook_pre_config(apr_pool_t *mp, apr_pool_t *mp_log, apr_pool_t *mp_temp) {
57 void (*register_fn)(const char *name, unsigned int type,
58 unsigned int argc_min, unsigned int argc_max,
59 void *fn_validate, void *fn_generate,
60 unsigned int is_cacheable, unsigned int availability);
62 /* Look for the registration function
63 * exported by ModSecurity.
65 register_fn = APR_RETRIEVE_OPTIONAL_FN(modsec_register_variable);
67 /* Use it to register our new
69 * name "REMOTE_ADDR_PORT".
76 var_remote_addr_port_generate,
85 static void register_hooks(apr_pool_t *p) {
86 ap_hook_pre_config(hook_pre_config, NULL, NULL, APR_HOOK_LAST);
89 /* Dispatch list for API hooks */
90 module AP_MODULE_DECLARE_DATA var_remote_addr_port_module = {
91 STANDARD20_MODULE_STUFF,
92 NULL, /* create per-dir config structures */
93 NULL, /* merge per-dir config structures */
94 NULL, /* create per-server config structures */
95 NULL, /* merge per-server config structures */
96 NULL, /* table of config file commands */
97 register_hooks /* register hooks */