1 #include "first.h" 2 3 #include "base.h" 4 #include "log.h" 5 #include "buffer.h" 6 #include "http_header.h" 7 8 #include "plugin.h" 9 10 #include "stat_cache.h" 11 12 #include <stdlib.h> 13 #include <string.h> 14 #include <errno.h> 15 16 /* plugin config for all request/connections */ 17 18 typedef struct { 19 const array *indexfiles; 20 } plugin_config; 21 22 typedef struct { 23 PLUGIN_DATA; 24 plugin_config defaults; 25 plugin_config conf; 26 } plugin_data; 27 28 /* init the plugin data */ 29 INIT_FUNC(mod_indexfile_init) { 30 return calloc(1, sizeof(plugin_data)); 31 } 32 33 static void mod_indexfile_merge_config_cpv(plugin_config * const pconf, const config_plugin_value_t * const cpv) { 34 switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */ 35 case 0: /* index-file.names */ 36 case 1: /* server.indexfiles */ 37 pconf->indexfiles = cpv->v.a; 38 break; 39 default:/* should not happen */ 40 return; 41 } 42 } 43 44 static void mod_indexfile_merge_config(plugin_config * const pconf, const config_plugin_value_t *cpv) { 45 do { 46 mod_indexfile_merge_config_cpv(pconf, cpv); 47 } while ((++cpv)->k_id != -1); 48 } 49 50 static void mod_indexfile_patch_config(request_st * const r, plugin_data * const p) { 51 p->conf = p->defaults; /* copy small struct instead of memcpy() */ 52 /*memcpy(&p->conf, &p->defaults, sizeof(plugin_config));*/ 53 for (int i = 1, used = p->nconfig; i < used; ++i) { 54 if (config_check_cond(r, (uint32_t)p->cvlist[i].k_id)) 55 mod_indexfile_merge_config(&p->conf,p->cvlist+p->cvlist[i].v.u2[0]); 56 } 57 } 58 59 SETDEFAULTS_FUNC(mod_indexfile_set_defaults) { 60 static const config_plugin_keys_t cpk[] = { 61 { CONST_STR_LEN("index-file.names"), 62 T_CONFIG_ARRAY_VLIST, 63 T_CONFIG_SCOPE_CONNECTION } 64 ,{ CONST_STR_LEN("server.indexfiles"), 65 T_CONFIG_ARRAY_VLIST, 66 T_CONFIG_SCOPE_CONNECTION } 67 ,{ NULL, 0, 68 T_CONFIG_UNSET, 69 T_CONFIG_SCOPE_UNSET } 70 }; 71 72 plugin_data * const p = p_d; 73 if (!config_plugin_values_init(srv, p, cpk, "mod_indexfile")) 74 return HANDLER_ERROR; 75 76 /* initialize p->defaults from global config context */ 77 if (p->nconfig > 0 && p->cvlist->v.u2[1]) { 78 const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0]; 79 if (-1 != cpv->k_id) 80 mod_indexfile_merge_config(&p->defaults, cpv); 81 } 82 83 return HANDLER_GO_ON; 84 } 85 86 URIHANDLER_FUNC(mod_indexfile_subrequest) { 87 plugin_data *p = p_d; 88 89 if (NULL != r->handler_module) return HANDLER_GO_ON; 90 if (!buffer_has_slash_suffix(&r->uri.path)) return HANDLER_GO_ON; 91 92 mod_indexfile_patch_config(r, p); 93 if (NULL == p->conf.indexfiles) return HANDLER_GO_ON; 94 95 if (r->conf.log_request_handling) { 96 log_error(r->conf.errh, __FILE__, __LINE__, "-- handling the request as Indexfile"); 97 log_error(r->conf.errh, __FILE__, __LINE__, "URI : %s", r->uri.path.ptr); 98 } 99 100 for (uint32_t k = 0; k < p->conf.indexfiles->used; ++k) { 101 const data_string * const ds = (data_string *)p->conf.indexfiles->data[k]; 102 buffer * const b = (ds->value.ptr[0] != '/') 103 ? &r->physical.path 104 : &r->physical.doc_root; /* index file relative to doc_root */ 105 /* if the index-file starts with a prefix as use this file as 106 * index-generator */ 107 108 /* temporarily append to base-path buffer to check existence */ 109 const uint32_t len = buffer_string_length(b); 110 buffer_append_path_len(b, CONST_BUF_LEN(&ds->value)); 111 112 const stat_cache_st * const st = stat_cache_path_stat(b); 113 114 buffer_string_set_length(b, len); 115 116 if (NULL == st) { 117 switch (errno) { 118 case ENOENT: 119 case ENOTDIR: 120 continue; 121 case EACCES: 122 r->http_status = 403; 123 return HANDLER_FINISHED; 124 default: 125 /* we have no idea what happened. let's tell the user so. */ 126 r->http_status = 500; 127 log_perror(r->conf.errh, __FILE__, __LINE__, 128 "index file error for request: %s -> %s", 129 r->uri.path.ptr, r->physical.path.ptr); 130 return HANDLER_FINISHED; 131 } 132 } 133 134 /* found */ 135 if (ds->value.ptr[0] == '/') { 136 /* replace uri.path */ 137 buffer_copy_buffer(&r->uri.path, &ds->value); 138 http_header_env_set(r, CONST_STR_LEN("PATH_TRANSLATED_DIRINDEX"), CONST_BUF_LEN(&r->physical.path)); 139 buffer_copy_buffer(&r->physical.path, &r->physical.doc_root); 140 } else { 141 /* append to uri.path the relative path to index file (/ -> /index.php) */ 142 buffer_append_string_buffer(&r->uri.path, &ds->value); 143 } 144 buffer_append_string_buffer(&r->physical.path, &ds->value); 145 return HANDLER_GO_ON; 146 } 147 148 /* not found */ 149 return HANDLER_GO_ON; 150 } 151 152 153 int mod_indexfile_plugin_init(plugin *p); 154 int mod_indexfile_plugin_init(plugin *p) { 155 p->version = LIGHTTPD_VERSION_ID; 156 p->name = "indexfile"; 157 158 p->init = mod_indexfile_init; 159 p->handle_subrequest_start = mod_indexfile_subrequest; 160 p->set_defaults = mod_indexfile_set_defaults; 161 162 return 0; 163 } 164