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[mod_usertrack] use config_plugin_values_init()

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personal/stbuehler/ci-build
Glenn Strauss 3 years ago
parent 84ccd87b31
commit 5fd8e1940e
1 changed files with 155 additions and 181 deletions
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336
src/mod_usertrack.c
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@ -13,212 +13,158 @@
#include "md5.h"
/* plugin config for all request/connections */
typedef struct {
buffer *cookie_name;
buffer *cookie_attrs;
buffer *cookie_domain;
const buffer *cookie_name;
const buffer *cookie_attrs;
const buffer *cookie_domain;
unsigned int cookie_max_age;
} plugin_config;
typedef struct {
PLUGIN_DATA;
plugin_config **config_storage;
plugin_config conf;
PLUGIN_DATA;
plugin_config defaults;
plugin_config conf;
} plugin_data;
/* init the plugin data */
INIT_FUNC(mod_usertrack_init) {
plugin_data *p;
p = calloc(1, sizeof(*p));
return p;
return calloc(1, sizeof(plugin_data));
}
/* detroy the plugin data */
FREE_FUNC(mod_usertrack_free) {
plugin_data *p = p_d;
UNUSED(srv);
if (!p) return HANDLER_GO_ON;
if (p->config_storage) {
size_t i;
for (i = 0; i < srv->config_context->used; i++) {
plugin_config *s = p->config_storage[i];
if (NULL == s) continue;
plugin_data *p = p_d;
if (!p) return HANDLER_GO_ON;
UNUSED(srv);
buffer_free(s->cookie_name);
buffer_free(s->cookie_attrs);
buffer_free(s->cookie_domain);
free(p->cvlist);
free(p);
free(s);
}
free(p->config_storage);
}
free(p);
return HANDLER_GO_ON;
return HANDLER_GO_ON;
}
/* handle plugin config and check values */
SETDEFAULTS_FUNC(mod_usertrack_set_defaults) {
plugin_data *p = p_d;
size_t i = 0;
config_values_t cv[] = {
{ "usertrack.cookie-name", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
{ "usertrack.cookie-max-age", NULL, T_CONFIG_INT, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
{ "usertrack.cookie-domain", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 2 */
{ "usertrack.cookie-attrs", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 3 */
{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
};
if (!p) return HANDLER_ERROR;
p->config_storage = calloc(srv->config_context->used, sizeof(plugin_config *));
for (i = 0; i < srv->config_context->used; i++) {
data_config const* config = (data_config const*)srv->config_context->data[i];
plugin_config *s;
s = calloc(1, sizeof(plugin_config));
s->cookie_name = buffer_init();
s->cookie_attrs = buffer_init();
s->cookie_domain = buffer_init();
s->cookie_max_age = 0;
cv[0].destination = s->cookie_name;
cv[1].destination = &(s->cookie_max_age);
cv[2].destination = s->cookie_domain;
cv[3].destination = s->cookie_attrs;
p->config_storage[i] = s;
if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
return HANDLER_ERROR;
}
if (buffer_string_is_empty(s->cookie_name)) {
buffer_copy_string_len(s->cookie_name, CONST_STR_LEN("TRACKID"));
} else {
size_t j, len = buffer_string_length(s->cookie_name);
for (j = 0; j < len; j++) {
char c = s->cookie_name->ptr[j] | 32;
if (c < 'a' || c > 'z') {
log_error_write(srv, __FILE__, __LINE__, "sb",
"invalid character in usertrack.cookie-name:",
s->cookie_name);
return HANDLER_ERROR;
}
}
}
if (!buffer_string_is_empty(s->cookie_domain)) {
size_t j, len = buffer_string_length(s->cookie_domain);
for (j = 0; j < len; j++) {
char c = s->cookie_domain->ptr[j];
if (c <= 32 || c >= 127 || c == '"' || c == '\\') {
log_error_write(srv, __FILE__, __LINE__, "sb",
"invalid character in usertrack.cookie-domain:",
s->cookie_domain);
return HANDLER_ERROR;
}
}
}
}
static void mod_usertrack_merge_config_cpv(plugin_config * const pconf, const config_plugin_value_t * const cpv) {
switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */
case 0: /* usertrack.cookie-name */
pconf->cookie_name = cpv->v.b;
break;
case 1: /* usertrack.cookie-max-age */
pconf->cookie_max_age = cpv->v.u;
break;
case 2: /* usertrack.cookie-domain */
pconf->cookie_domain = cpv->v.b;
break;
case 3: /* usertrack.cookie-attrs */
pconf->cookie_attrs = cpv->v.b;
break;
default:/* should not happen */
return;
}
}
return HANDLER_GO_ON;
static void mod_usertrack_merge_config(plugin_config * const pconf, const config_plugin_value_t *cpv) {
do {
mod_usertrack_merge_config_cpv(pconf, cpv);
} while ((++cpv)->k_id != -1);
}
#define PATCH(x) \
p->conf.x = s->x;
static int mod_usertrack_patch_connection(server *srv, connection *con, plugin_data *p) {
size_t i, j;
plugin_config *s = p->config_storage[0];
PATCH(cookie_name);
PATCH(cookie_attrs);
PATCH(cookie_domain);
PATCH(cookie_max_age);
/* skip the first, the global context */
for (i = 1; i < srv->config_context->used; i++) {
if (!config_check_cond(con, i)) continue; /* condition not matched */
data_config *dc = (data_config *)srv->config_context->data[i];
s = p->config_storage[i];
/* merge config */
for (j = 0; j < dc->value->used; j++) {
data_unset *du = dc->value->data[j];
if (buffer_is_equal_string(&du->key, CONST_STR_LEN("usertrack.cookie-name"))) {
PATCH(cookie_name);
} else if (buffer_is_equal_string(&du->key, CONST_STR_LEN("usertrack.cookie-attrs"))) {
PATCH(cookie_attrs);
} else if (buffer_is_equal_string(&du->key, CONST_STR_LEN("usertrack.cookie-max-age"))) {
PATCH(cookie_max_age);
} else if (buffer_is_equal_string(&du->key, CONST_STR_LEN("usertrack.cookie-domain"))) {
PATCH(cookie_domain);
}
}
}
static void mod_usertrack_patch_config(connection * const con, plugin_data * const p) {
memcpy(&p->conf, &p->defaults, sizeof(plugin_config));
for (int i = 1, used = p->nconfig; i < used; ++i) {
if (config_check_cond(con, (uint32_t)p->cvlist[i].k_id))
mod_usertrack_merge_config(&p->conf, p->cvlist + p->cvlist[i].v.u2[0]);
}
}
return 0;
SETDEFAULTS_FUNC(mod_usertrack_set_defaults) {
static const config_plugin_keys_t cpk[] = {
{ CONST_STR_LEN("usertrack.cookie-name"),
T_CONFIG_STRING,
T_CONFIG_SCOPE_CONNECTION }
,{ CONST_STR_LEN("usertrack.cookie-max-age"),
T_CONFIG_INT,
T_CONFIG_SCOPE_CONNECTION }
,{ CONST_STR_LEN("usertrack.cookie-domain"),
T_CONFIG_STRING,
T_CONFIG_SCOPE_CONNECTION }
,{ CONST_STR_LEN("usertrack.cookie-attrs"),
T_CONFIG_STRING,
T_CONFIG_SCOPE_CONNECTION }
,{ NULL, 0,
T_CONFIG_UNSET,
T_CONFIG_SCOPE_UNSET }
};
plugin_data * const p = p_d;
if (!config_plugin_values_init(srv, p, cpk, "mod_usertrack"))
return HANDLER_ERROR;
/* process and validate config directives
* (init i to 0 if global context; to 1 to skip empty global context) */
for (int i = !p->cvlist[0].v.u2[1]; i < p->nconfig; ++i) {
const config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0];
for (; -1 != cpv->k_id; ++cpv) {
switch (cpv->k_id) {
case 0: /* usertrack.cookie-name */
if (!buffer_string_is_empty(cpv->v.b)) {
const char * const ptr = cpv->v.b->ptr;
const size_t len = buffer_string_length(cpv->v.b);
for (size_t j = 0; j < len; ++j) {
if (!light_isalpha(ptr[j])) {
log_error(srv->errh, __FILE__, __LINE__,
"invalid character in %s: %s",
cpk[cpv->k_id].k, ptr);
return HANDLER_ERROR;
}
}
}
break;
case 1: /* usertrack.cookie-max-age */
break;
case 2: /* usertrack.cookie-domain */
if (!buffer_string_is_empty(cpv->v.b)) {
const char * const ptr = cpv->v.b->ptr;
const size_t len = buffer_string_length(cpv->v.b);
for (size_t j = 0; j < len; ++j) {
const char c = ptr[j];
if (c <= 32 || c >= 127 || c == '"' || c == '\\') {
log_error(srv->errh, __FILE__, __LINE__,
"invalid character in %s: %s",
cpk[cpv->k_id].k, ptr);
return HANDLER_ERROR;
}
}
}
break;
case 3: /* usertrack.cookie-attrs */
break;
default:/* should not happen */
break;
}
}
}
/* initialize p->defaults from global config context */
if (p->nconfig > 0 && p->cvlist->v.u2[1]) {
const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0];
if (-1 != cpv->k_id)
mod_usertrack_merge_config(&p->defaults, cpv);
}
if (buffer_string_is_empty(p->defaults.cookie_name)) {
static const struct { const char *ptr; uint32_t used; uint32_t size; }
default_cookie_name = { "TRACKID", sizeof("TRACKID"), 0 };
*((const buffer **)&p->defaults.cookie_name) =
(const buffer *)&default_cookie_name;
}
return HANDLER_GO_ON;
}
#undef PATCH
URIHANDLER_FUNC(mod_usertrack_uri_handler) {
plugin_data *p = p_d;
__attribute_noinline__
static handler_t mod_usertrack_set_cookie(server *srv, connection *con, plugin_data *p) {
buffer *cookie;
const buffer *b;
unsigned char h[16];
li_MD5_CTX Md5Ctx;
char hh[LI_ITOSTRING_LENGTH];
if (buffer_is_empty(con->uri.path)) return HANDLER_GO_ON;
mod_usertrack_patch_connection(srv, con, p);
if (NULL != (b = http_header_request_get(con, HTTP_HEADER_COOKIE, CONST_STR_LEN("Cookie")))) {
char *g;
/* we have a cookie, does it contain a valid name ? */
/* parse the cookie
*
* check for cookiename + (WS | '=')
*
*/
if (NULL != (g = strstr(b->ptr, p->conf.cookie_name->ptr))) {
char *nc;
/* skip WS */
for (nc = g + buffer_string_length(p->conf.cookie_name); *nc == ' ' || *nc == '\t'; nc++);
if (*nc == '=') {
/* ok, found the key of our own cookie */
if (strlen(nc) > 32) {
/* i'm lazy */
return HANDLER_GO_ON;
}
}
}
}
/* set a cookie */
cookie = srv->tmp_buf;
buffer_copy_buffer(cookie, p->conf.cookie_name);
@ -266,7 +212,35 @@ URIHANDLER_FUNC(mod_usertrack_uri_handler) {
return HANDLER_GO_ON;
}
/* this function is called at dlopen() time and inits the callbacks */
URIHANDLER_FUNC(mod_usertrack_uri_handler) {
plugin_data * const p = p_d;
if (buffer_is_empty(con->uri.path)) return HANDLER_GO_ON;
mod_usertrack_patch_config(con, p);
const buffer * const b =
http_header_request_get(con, HTTP_HEADER_COOKIE, CONST_STR_LEN("Cookie"));
if (NULL != b) {
/* parse the cookie (fuzzy; not precise using strstr() below)
* check for cookiename + (WS | '=')
*/
const char * const g = strstr(b->ptr, p->conf.cookie_name->ptr);
if (NULL != g) {
const char *nc = g+buffer_string_length(p->conf.cookie_name);
while (*nc == ' ' || *nc == '\t') ++nc; /* skip WS */
if (*nc == '=') { /* ok, found the key of our own cookie */
if (strlen(nc) > 32) {
/* i'm lazy */
return HANDLER_GO_ON;
}
}
}
}
return mod_usertrack_set_cookie(srv, con, p);
}
int mod_usertrack_plugin_init(plugin *p);
int mod_usertrack_plugin_init(plugin *p) {

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