Return to mod_skeleton.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / lighttpd / src

lighttpd 1.4.35

    1: #include "base.h"
    2: #include "log.h"
    3: #include "buffer.h"
    4: 
    5: #include "plugin.h"
    6: 
    7: #include <ctype.h>
    8: #include <stdlib.h>
    9: #include <string.h>
   10: 
   11: /**
   12:  * this is a skeleton for a lighttpd plugin
   13:  *
   14:  * just replaces every occurance of 'skeleton' by your plugin name
   15:  *
   16:  * e.g. in vim:
   17:  *
   18:  *   :%s/skeleton/myhandler/
   19:  *
   20:  */
   21: 
   22: 
   23: 
   24: /* plugin config for all request/connections */
   25: 
   26: typedef struct {
   27: 	array *match;
   28: } plugin_config;
   29: 
   30: typedef struct {
   31: 	PLUGIN_DATA;
   32: 
   33: 	buffer *match_buf;
   34: 
   35: 	plugin_config **config_storage;
   36: 
   37: 	plugin_config conf;
   38: } plugin_data;
   39: 
   40: typedef struct {
   41: 	size_t foo;
   42: } handler_ctx;
   43: 
   44: static handler_ctx * handler_ctx_init() {
   45: 	handler_ctx * hctx;
   46: 
   47: 	hctx = calloc(1, sizeof(*hctx));
   48: 
   49: 	return hctx;
   50: }
   51: 
   52: static void handler_ctx_free(handler_ctx *hctx) {
   53: 
   54: 	free(hctx);
   55: }
   56: 
   57: /* init the plugin data */
   58: INIT_FUNC(mod_skeleton_init) {
   59: 	plugin_data *p;
   60: 
   61: 	p = calloc(1, sizeof(*p));
   62: 
   63: 	p->match_buf = buffer_init();
   64: 
   65: 	return p;
   66: }
   67: 
   68: /* detroy the plugin data */
   69: FREE_FUNC(mod_skeleton_free) {
   70: 	plugin_data *p = p_d;
   71: 
   72: 	UNUSED(srv);
   73: 
   74: 	if (!p) return HANDLER_GO_ON;
   75: 
   76: 	if (p->config_storage) {
   77: 		size_t i;
   78: 
   79: 		for (i = 0; i < srv->config_context->used; i++) {
   80: 			plugin_config *s = p->config_storage[i];
   81: 
   82: 			if (!s) continue;
   83: 
   84: 			array_free(s->match);
   85: 
   86: 			free(s);
   87: 		}
   88: 		free(p->config_storage);
   89: 	}
   90: 
   91: 	buffer_free(p->match_buf);
   92: 
   93: 	free(p);
   94: 
   95: 	return HANDLER_GO_ON;
   96: }
   97: 
   98: /* handle plugin config and check values */
   99: 
  100: SETDEFAULTS_FUNC(mod_skeleton_set_defaults) {
  101: 	plugin_data *p = p_d;
  102: 	size_t i = 0;
  103: 
  104: 	config_values_t cv[] = {
  105: 		{ "skeleton.array",             NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION },       /* 0 */
  106: 		{ NULL,                         NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
  107: 	};
  108: 
  109: 	if (!p) return HANDLER_ERROR;
  110: 
  111: 	p->config_storage = calloc(1, srv->config_context->used * sizeof(plugin_config *));
  112: 
  113: 	for (i = 0; i < srv->config_context->used; i++) {
  114: 		plugin_config *s;
  115: 
  116: 		s = calloc(1, sizeof(plugin_config));
  117: 		s->match    = array_init();
  118: 
  119: 		cv[0].destination = s->match;
  120: 
  121: 		p->config_storage[i] = s;
  122: 
  123: 		if (0 != config_insert_values_global(srv, ((data_config *)srv->config_context->data[i])->value, cv)) {
  124: 			return HANDLER_ERROR;
  125: 		}
  126: 	}
  127: 
  128: 	return HANDLER_GO_ON;
  129: }
  130: 
  131: #define PATCH(x) \
  132: 	p->conf.x = s->x;
  133: static int mod_skeleton_patch_connection(server *srv, connection *con, plugin_data *p) {
  134: 	size_t i, j;
  135: 	plugin_config *s = p->config_storage[0];
  136: 
  137: 	PATCH(match);
  138: 
  139: 	/* skip the first, the global context */
  140: 	for (i = 1; i < srv->config_context->used; i++) {
  141: 		data_config *dc = (data_config *)srv->config_context->data[i];
  142: 		s = p->config_storage[i];
  143: 
  144: 		/* condition didn't match */
  145: 		if (!config_check_cond(srv, con, dc)) continue;
  146: 
  147: 		/* merge config */
  148: 		for (j = 0; j < dc->value->used; j++) {
  149: 			data_unset *du = dc->value->data[j];
  150: 
  151: 			if (buffer_is_equal_string(du->key, CONST_STR_LEN("skeleton.array"))) {
  152: 				PATCH(match);
  153: 			}
  154: 		}
  155: 	}
  156: 
  157: 	return 0;
  158: }
  159: #undef PATCH
  160: 
  161: URIHANDLER_FUNC(mod_skeleton_uri_handler) {
  162: 	plugin_data *p = p_d;
  163: 	int s_len;
  164: 	size_t k, i;
  165: 
  166: 	UNUSED(srv);
  167: 
  168: 	if (con->mode != DIRECT) return HANDLER_GO_ON;
  169: 
  170: 	if (con->uri.path->used == 0) return HANDLER_GO_ON;
  171: 
  172: 	mod_skeleton_patch_connection(srv, con, p);
  173: 
  174: 	s_len = con->uri.path->used - 1;
  175: 
  176: 	for (k = 0; k < p->conf.match->used; k++) {
  177: 		data_string *ds = (data_string *)p->conf.match->data[k];
  178: 		int ct_len = ds->value->used - 1;
  179: 
  180: 		if (ct_len > s_len) continue;
  181: 		if (ds->value->used == 0) continue;
  182: 
  183: 		if (0 == strncmp(con->uri.path->ptr + s_len - ct_len, ds->value->ptr, ct_len)) {
  184: 			con->http_status = 403;
  185: 
  186: 			return HANDLER_FINISHED;
  187: 		}
  188: 	}
  189: 
  190: 	/* not found */
  191: 	return HANDLER_GO_ON;
  192: }
  193: 
  194: /* this function is called at dlopen() time and inits the callbacks */
  195: 
  196: int mod_skeleton_plugin_init(plugin *p) {
  197: 	p->version     = LIGHTTPD_VERSION_ID;
  198: 	p->name        = buffer_init_string("skeleton");
  199: 
  200: 	p->init        = mod_skeleton_init;
  201: 	p->handle_uri_clean  = mod_skeleton_uri_handler;
  202: 	p->set_defaults  = mod_skeleton_set_defaults;
  203: 	p->cleanup     = mod_skeleton_free;
  204: 
  205: 	p->data        = NULL;
  206: 
  207: 	return 0;
  208: }