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Diffstat (limited to 'src/mod_trigger_b4_dl.c')
-rw-r--r--src/mod_trigger_b4_dl.c589
1 files changed, 0 insertions, 589 deletions
diff --git a/src/mod_trigger_b4_dl.c b/src/mod_trigger_b4_dl.c
deleted file mode 100644
index 2ef3b49f..00000000
--- a/src/mod_trigger_b4_dl.c
+++ /dev/null
@@ -1,589 +0,0 @@
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "base.h"
-#include "log.h"
-#include "buffer.h"
-
-#include "plugin.h"
-#include "response.h"
-#include "inet_ntop_cache.h"
-
-#if defined(HAVE_GDBM_H)
-#include <gdbm.h>
-#endif
-
-#if defined(HAVE_PCRE_H)
-#include <pcre.h>
-#endif
-
-#if defined(HAVE_MEMCACHE_H)
-#include <memcache.h>
-#endif
-
-/**
- * this is a trigger_b4_dl for a lighttpd plugin
- *
- */
-
-/* plugin config for all request/connections */
-
-typedef struct {
- buffer *db_filename;
-
- buffer *trigger_url;
- buffer *download_url;
- buffer *deny_url;
-
- array *mc_hosts;
- buffer *mc_namespace;
-#if defined(HAVE_PCRE_H)
- pcre *trigger_regex;
- pcre *download_regex;
-#endif
-#if defined(HAVE_GDBM_H)
- GDBM_FILE db;
-#endif
-
-#if defined(HAVE_MEMCACHE_H)
- struct memcache *mc;
-#endif
-
- unsigned short trigger_timeout;
- unsigned short debug;
-} plugin_config;
-
-typedef struct {
- PLUGIN_DATA;
-
- buffer *tmp_buf;
-
- plugin_config **config_storage;
-
- plugin_config conf;
-} plugin_data;
-
-/* init the plugin data */
-INIT_FUNC(mod_trigger_b4_dl_init) {
- plugin_data *p;
-
- UNUSED(srv);
-
- p = calloc(1, sizeof(*p));
-
- p->tmp_buf = buffer_init();
-
- return p;
-}
-
-/* detroy the plugin data */
-FREE_FUNC(mod_trigger_b4_dl_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 (!s) continue;
-
- buffer_free(s->db_filename);
- buffer_free(s->download_url);
- buffer_free(s->trigger_url);
- buffer_free(s->deny_url);
-
- buffer_free(s->mc_namespace);
- array_free(s->mc_hosts);
-
-#if defined(HAVE_PCRE_H)
- if (s->trigger_regex) pcre_free(s->trigger_regex);
- if (s->download_regex) pcre_free(s->download_regex);
-#endif
-#if defined(HAVE_GDBM_H)
- if (s->db) gdbm_close(s->db);
-#endif
-#if defined(HAVE_MEMCACHE_H)
- if (s->mc) mc_free(s->mc);
-#endif
-
- free(s);
- }
- free(p->config_storage);
- }
-
- buffer_free(p->tmp_buf);
-
- free(p);
-
- return HANDLER_GO_ON;
-}
-
-/* handle plugin config and check values */
-
-SETDEFAULTS_FUNC(mod_trigger_b4_dl_set_defaults) {
- plugin_data *p = p_d;
- size_t i = 0;
-
-
- config_values_t cv[] = {
- { "trigger-before-download.gdbm-filename", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
- { "trigger-before-download.trigger-url", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
- { "trigger-before-download.download-url", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 2 */
- { "trigger-before-download.deny-url", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 3 */
- { "trigger-before-download.trigger-timeout", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 4 */
- { "trigger-before-download.memcache-hosts", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 5 */
- { "trigger-before-download.memcache-namespace", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 6 */
- { "trigger-before-download.debug", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 7 */
- { NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
- };
-
- if (!p) return HANDLER_ERROR;
-
- p->config_storage = calloc(1, srv->config_context->used * sizeof(specific_config *));
-
- for (i = 0; i < srv->config_context->used; i++) {
- plugin_config *s;
-#if defined(HAVE_PCRE_H)
- const char *errptr;
- int erroff;
-#endif
-
- s = calloc(1, sizeof(plugin_config));
- s->db_filename = buffer_init();
- s->download_url = buffer_init();
- s->trigger_url = buffer_init();
- s->deny_url = buffer_init();
- s->mc_hosts = array_init();
- s->mc_namespace = buffer_init();
-
- cv[0].destination = s->db_filename;
- cv[1].destination = s->trigger_url;
- cv[2].destination = s->download_url;
- cv[3].destination = s->deny_url;
- cv[4].destination = &(s->trigger_timeout);
- cv[5].destination = s->mc_hosts;
- cv[6].destination = s->mc_namespace;
- cv[7].destination = &(s->debug);
-
- p->config_storage[i] = s;
-
- if (0 != config_insert_values_global(srv, ((data_config *)srv->config_context->data[i])->value, cv)) {
- return HANDLER_ERROR;
- }
-#if defined(HAVE_GDBM_H)
- if (!buffer_is_empty(s->db_filename)) {
- if (NULL == (s->db = gdbm_open(s->db_filename->ptr, 4096, GDBM_WRCREAT | GDBM_NOLOCK, S_IRUSR | S_IWUSR, 0))) {
- log_error_write(srv, __FILE__, __LINE__, "s",
- "gdbm-open failed");
- return HANDLER_ERROR;
- }
- }
-#endif
-#if defined(HAVE_PCRE_H)
- if (!buffer_is_empty(s->download_url)) {
- if (NULL == (s->download_regex = pcre_compile(s->download_url->ptr,
- 0, &errptr, &erroff, NULL))) {
-
- log_error_write(srv, __FILE__, __LINE__, "sbss",
- "compiling regex for download-url failed:",
- s->download_url, "pos:", erroff);
- return HANDLER_ERROR;
- }
- }
-
- if (!buffer_is_empty(s->trigger_url)) {
- if (NULL == (s->trigger_regex = pcre_compile(s->trigger_url->ptr,
- 0, &errptr, &erroff, NULL))) {
-
- log_error_write(srv, __FILE__, __LINE__, "sbss",
- "compiling regex for trigger-url failed:",
- s->trigger_url, "pos:", erroff);
-
- return HANDLER_ERROR;
- }
- }
-#endif
-
- if (s->mc_hosts->used) {
-#if defined(HAVE_MEMCACHE_H)
- size_t k;
- s->mc = mc_new();
-
- for (k = 0; k < s->mc_hosts->used; k++) {
- data_string *ds = (data_string *)s->mc_hosts->data[k];
-
- if (0 != mc_server_add4(s->mc, ds->value->ptr)) {
- log_error_write(srv, __FILE__, __LINE__, "sb",
- "connection to host failed:",
- ds->value);
-
- return HANDLER_ERROR;
- }
- }
-#else
- log_error_write(srv, __FILE__, __LINE__, "s",
- "memcache support is not compiled in but trigger-before-download.memcache-hosts is set, aborting");
- return HANDLER_ERROR;
-#endif
- }
-
-
-#if (!defined(HAVE_GDBM_H) && !defined(HAVE_MEMCACHE_H)) || !defined(HAVE_PCRE_H)
- log_error_write(srv, __FILE__, __LINE__, "s",
- "(either gdbm or libmemcache) and pcre are require, but were not found, aborting");
- return HANDLER_ERROR;
-#endif
- }
-
- return HANDLER_GO_ON;
-}
-
-static int mod_trigger_b4_dl_patch_connection(server *srv, connection *con, plugin_data *p) {
- size_t i, j;
- plugin_config *s = p->config_storage[0];
-
-#if defined(HAVE_GDBM)
- PATCH_OPTION(db);
-#endif
-#if defined(HAVE_PCRE_H)
- PATCH_OPTION(download_regex);
- PATCH_OPTION(trigger_regex);
-#endif
- PATCH_OPTION(trigger_timeout);
- PATCH_OPTION(deny_url);
- PATCH_OPTION(mc_namespace);
- PATCH_OPTION(debug);
-#if defined(HAVE_MEMCACHE_H)
- PATCH_OPTION(mc);
-#endif
-
- /* skip the first, the global context */
- for (i = 1; i < srv->config_context->used; i++) {
- data_config *dc = (data_config *)srv->config_context->data[i];
- s = p->config_storage[i];
-
- /* condition didn't match */
- if (!config_check_cond(srv, con, dc)) continue;
-
- /* 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("trigger-before-download.download-url"))) {
-#if defined(HAVE_PCRE_H)
- PATCH_OPTION(download_regex);
-#endif
- } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("trigger-before-download.trigger-url"))) {
-# if defined(HAVE_PCRE_H)
- PATCH_OPTION(trigger_regex);
-# endif
- } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("trigger-before-download.gdbm-filename"))) {
-#if defined(HAVE_GDBM_H)
- PATCH_OPTION(db);
-#endif
- } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("trigger-before-download.trigger-timeout"))) {
- PATCH_OPTION(trigger_timeout);
- } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("trigger-before-download.debug"))) {
- PATCH_OPTION(debug);
- } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("trigger-before-download.deny-url"))) {
- PATCH_OPTION(deny_url);
- } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("trigger-before-download.memcache-namespace"))) {
- PATCH_OPTION(mc_namespace);
- } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("trigger-before-download.memcache-hosts"))) {
-#if defined(HAVE_MEMCACHE_H)
- PATCH_OPTION(mc);
-#endif
- }
- }
- }
-
- return 0;
-}
-
-URIHANDLER_FUNC(mod_trigger_b4_dl_uri_handler) {
- plugin_data *p = p_d;
- const char *remote_ip;
- data_string *ds;
-
-#if defined(HAVE_PCRE_H)
- int n;
-# define N 10
- int ovec[N * 3];
-
- if (con->uri.path->used == 0) return HANDLER_GO_ON;
-
- mod_trigger_b4_dl_patch_connection(srv, con, p);
-
- if (!p->conf.trigger_regex || !p->conf.download_regex) return HANDLER_GO_ON;
-
-# if !defined(HAVE_GDBM_H) && !defined(HAVE_MEMCACHE_H)
- return HANDLER_GO_ON;
-# elif defined(HAVE_GDBM_H) && defined(HAVE_MEMCACHE_H)
- if (!p->conf.db && !p->conf.mc) return HANDLER_GO_ON;
- if (p->conf.db && p->conf.mc) {
- /* can't decide which one */
-
- return HANDLER_GO_ON;
- }
-# elif defined(HAVE_GDBM_H)
- if (!p->conf.db) return HANDLER_GO_ON;
-# else
- if (!p->conf.mc) return HANDLER_GO_ON;
-# endif
-
- if (NULL != (ds = (data_string *)array_get_element(con->request.headers, CONST_STR_LEN("X-Forwarded-For")))) {
- /* X-Forwarded-For contains the ip behind the proxy */
-
- remote_ip = ds->value->ptr;
-
- /* memcache can't handle spaces */
- } else {
- remote_ip = inet_ntop_cache_get_ip(srv, &(con->dst_addr));
- }
-
- if (p->conf.debug) {
- log_error_write(srv, __FILE__, __LINE__, "ss", "(debug) remote-ip:", remote_ip);
- }
-
- /* check if URL is a trigger -> insert IP into DB */
- if ((n = pcre_exec(p->conf.trigger_regex, NULL, con->uri.path->ptr, con->uri.path->used - 1, 0, 0, ovec, 3 * N)) < 0) {
- if (n != PCRE_ERROR_NOMATCH) {
- log_error_write(srv, __FILE__, __LINE__, "sd",
- "execution error while matching:", n);
-
- return HANDLER_ERROR;
- }
- } else {
-# if defined(HAVE_GDBM_H)
- if (p->conf.db) {
- /* the trigger matched */
- datum key, val;
-
- key.dptr = (char *)remote_ip;
- key.dsize = strlen(remote_ip);
-
- val.dptr = (char *)&(srv->cur_ts);
- val.dsize = sizeof(srv->cur_ts);
-
- if (0 != gdbm_store(p->conf.db, key, val, GDBM_REPLACE)) {
- log_error_write(srv, __FILE__, __LINE__, "s",
- "insert failed");
- }
- }
-# endif
-# if defined(HAVE_MEMCACHE_H)
- if (p->conf.mc) {
- size_t i;
- buffer_copy_string_buffer(p->tmp_buf, p->conf.mc_namespace);
- buffer_append_string(p->tmp_buf, remote_ip);
-
- for (i = 0; i < p->tmp_buf->used - 1; i++) {
- if (p->tmp_buf->ptr[i] == ' ') p->tmp_buf->ptr[i] = '-';
- }
-
- if (p->conf.debug) {
- log_error_write(srv, __FILE__, __LINE__, "sb", "(debug) triggered IP:", p->tmp_buf);
- }
-
- if (0 != mc_set(p->conf.mc,
- CONST_BUF_LEN(p->tmp_buf),
- (char *)&(srv->cur_ts), sizeof(srv->cur_ts),
- p->conf.trigger_timeout, 0)) {
- log_error_write(srv, __FILE__, __LINE__, "s",
- "insert failed");
- }
- }
-# endif
- }
-
- /* check if URL is a download -> check IP in DB, update timestamp */
- if ((n = pcre_exec(p->conf.download_regex, NULL, con->uri.path->ptr, con->uri.path->used - 1, 0, 0, ovec, 3 * N)) < 0) {
- if (n != PCRE_ERROR_NOMATCH) {
- log_error_write(srv, __FILE__, __LINE__, "sd",
- "execution error while matching: ", n);
- return HANDLER_ERROR;
- }
- } else {
- /* the download uri matched */
-# if defined(HAVE_GDBM_H)
- if (p->conf.db) {
- datum key, val;
- time_t last_hit;
-
- key.dptr = (char *)remote_ip;
- key.dsize = strlen(remote_ip);
-
- val = gdbm_fetch(p->conf.db, key);
-
- if (val.dptr == NULL) {
- /* not found, redirect */
-
- response_header_insert(srv, con, CONST_STR_LEN("Location"), CONST_BUF_LEN(p->conf.deny_url));
-
- con->http_status = 307;
- con->send->is_closed = 1;
-
- return HANDLER_FINISHED;
- }
-
- last_hit = *(time_t *)(val.dptr);
-
- free(val.dptr);
-
- if (srv->cur_ts - last_hit > p->conf.trigger_timeout) {
- /* found, but timeout, redirect */
-
- response_header_insert(srv, con, CONST_STR_LEN("Location"), CONST_BUF_LEN(p->conf.deny_url));
- con->http_status = 307;
- con->send->is_closed = 1;
-
- if (p->conf.db) {
- if (0 != gdbm_delete(p->conf.db, key)) {
- log_error_write(srv, __FILE__, __LINE__, "s",
- "delete failed");
- }
- }
-
- return HANDLER_FINISHED;
- }
-
- val.dptr = (char *)&(srv->cur_ts);
- val.dsize = sizeof(srv->cur_ts);
-
- if (0 != gdbm_store(p->conf.db, key, val, GDBM_REPLACE)) {
- log_error_write(srv, __FILE__, __LINE__, "s",
- "insert failed");
- }
- }
-# endif
-
-# if defined(HAVE_MEMCACHE_H)
- if (p->conf.mc) {
- void *r;
- size_t i;
-
- buffer_copy_string_buffer(p->tmp_buf, p->conf.mc_namespace);
- buffer_append_string(p->tmp_buf, remote_ip);
-
- for (i = 0; i < p->tmp_buf->used - 1; i++) {
- if (p->tmp_buf->ptr[i] == ' ') p->tmp_buf->ptr[i] = '-';
- }
-
- if (p->conf.debug) {
- log_error_write(srv, __FILE__, __LINE__, "sb", "(debug) checking IP:", p->tmp_buf);
- }
-
- /**
- *
- * memcached is do expiration for us, as long as we can fetch it every thing is ok
- * and the timestamp is updated
- *
- */
- if (NULL == (r = mc_aget(p->conf.mc,
- CONST_BUF_LEN(p->tmp_buf)
- ))) {
-
- response_header_insert(srv, con, CONST_STR_LEN("Location"), CONST_BUF_LEN(p->conf.deny_url));
-
- con->http_status = 307;
- con->send->is_closed = 1;
-
- return HANDLER_FINISHED;
- }
-
- free(r);
-
- /* set a new timeout */
- if (0 != mc_set(p->conf.mc,
- CONST_BUF_LEN(p->tmp_buf),
- (char *)&(srv->cur_ts), sizeof(srv->cur_ts),
- p->conf.trigger_timeout, 0)) {
- log_error_write(srv, __FILE__, __LINE__, "s",
- "insert failed");
- }
- }
-# endif
- }
-
-#else
- UNUSED(srv);
- UNUSED(con);
- UNUSED(p_d);
-#endif
-
- return HANDLER_GO_ON;
-}
-
-#if defined(HAVE_GDBM_H)
-TRIGGER_FUNC(mod_trigger_b4_dl_handle_trigger) {
- plugin_data *p = p_d;
- size_t i;
-
- /* check DB each minute */
- if (srv->cur_ts % 60 != 0) return HANDLER_GO_ON;
-
- /* cleanup */
- for (i = 0; i < srv->config_context->used; i++) {
- plugin_config *s = p->config_storage[i];
- datum key, val, okey;
-
- if (!s->db) continue;
-
- okey.dptr = NULL;
-
- /* according to the manual this loop + delete does delete all entries on its way
- *
- * we don't care as the next round will remove them. We don't have to perfect here.
- */
- for (key = gdbm_firstkey(s->db); key.dptr; key = gdbm_nextkey(s->db, okey)) {
- time_t last_hit;
- if (okey.dptr) {
- free(okey.dptr);
- okey.dptr = NULL;
- }
-
- val = gdbm_fetch(s->db, key);
-
- last_hit = *(time_t *)(val.dptr);
-
- free(val.dptr);
-
- if (srv->cur_ts - last_hit > s->trigger_timeout) {
- gdbm_delete(s->db, key);
- }
-
- okey = key;
- }
- if (okey.dptr) free(okey.dptr);
-
- /* reorg once a day */
- if ((srv->cur_ts % (60 * 60 * 24) != 0)) gdbm_reorganize(s->db);
- }
- return HANDLER_GO_ON;
-}
-#endif
-
-/* this function is called at dlopen() time and inits the callbacks */
-
-LI_EXPORT int mod_trigger_b4_dl_plugin_init(plugin *p);
-LI_EXPORT int mod_trigger_b4_dl_plugin_init(plugin *p) {
- p->version = LIGHTTPD_VERSION_ID;
- p->name = buffer_init_string("trigger_b4_dl");
-
- p->init = mod_trigger_b4_dl_init;
- p->handle_uri_clean = mod_trigger_b4_dl_uri_handler;
- p->set_defaults = mod_trigger_b4_dl_set_defaults;
-#if defined(HAVE_GDBM_H)
- p->handle_trigger = mod_trigger_b4_dl_handle_trigger;
-#endif
- p->cleanup = mod_trigger_b4_dl_free;
-
- p->data = NULL;
-
- return 0;
-}
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