Annotation of embedaddon/lighttpd/src/mod_evhost.c, revision 1.1
1.1 ! misho 1: #include "plugin.h"
! 2: #include "log.h"
! 3: #include "response.h"
! 4: #include "stat_cache.h"
! 5:
! 6: #include <string.h>
! 7: #include <errno.h>
! 8: #include <ctype.h>
! 9:
! 10: typedef struct {
! 11: /* unparsed pieces */
! 12: buffer *path_pieces_raw;
! 13:
! 14: /* pieces for path creation */
! 15: size_t len;
! 16: buffer **path_pieces;
! 17: } plugin_config;
! 18:
! 19: typedef struct {
! 20: PLUGIN_DATA;
! 21: buffer *tmp_buf;
! 22:
! 23: plugin_config **config_storage;
! 24: plugin_config conf;
! 25: } plugin_data;
! 26:
! 27: INIT_FUNC(mod_evhost_init) {
! 28: plugin_data *p;
! 29:
! 30: p = calloc(1, sizeof(*p));
! 31:
! 32: p->tmp_buf = buffer_init();
! 33:
! 34: return p;
! 35: }
! 36:
! 37: FREE_FUNC(mod_evhost_free) {
! 38: plugin_data *p = p_d;
! 39:
! 40: UNUSED(srv);
! 41:
! 42: if (!p) return HANDLER_GO_ON;
! 43:
! 44: if (p->config_storage) {
! 45: size_t i;
! 46: for (i = 0; i < srv->config_context->used; i++) {
! 47: plugin_config *s = p->config_storage[i];
! 48:
! 49: if (!s) continue;
! 50:
! 51: if(s->path_pieces) {
! 52: size_t j;
! 53: for (j = 0; j < s->len; j++) {
! 54: buffer_free(s->path_pieces[j]);
! 55: }
! 56:
! 57: free(s->path_pieces);
! 58: }
! 59:
! 60: buffer_free(s->path_pieces_raw);
! 61:
! 62: free(s);
! 63: }
! 64: free(p->config_storage);
! 65: }
! 66:
! 67: buffer_free(p->tmp_buf);
! 68:
! 69: free(p);
! 70:
! 71: return HANDLER_GO_ON;
! 72: }
! 73:
! 74: static void mod_evhost_parse_pattern(plugin_config *s) {
! 75: char *ptr = s->path_pieces_raw->ptr,*pos;
! 76:
! 77: s->path_pieces = NULL;
! 78:
! 79: for(pos=ptr;*ptr;ptr++) {
! 80: if(*ptr == '%') {
! 81: s->path_pieces = realloc(s->path_pieces,(s->len+2) * sizeof(*s->path_pieces));
! 82: s->path_pieces[s->len] = buffer_init();
! 83: s->path_pieces[s->len+1] = buffer_init();
! 84:
! 85: buffer_copy_string_len(s->path_pieces[s->len],pos,ptr-pos);
! 86: pos = ptr + 2;
! 87:
! 88: buffer_copy_string_len(s->path_pieces[s->len+1],ptr++,2);
! 89:
! 90: s->len += 2;
! 91: }
! 92: }
! 93:
! 94: if(*pos != '\0') {
! 95: s->path_pieces = realloc(s->path_pieces,(s->len+1) * sizeof(*s->path_pieces));
! 96: s->path_pieces[s->len] = buffer_init();
! 97:
! 98: buffer_copy_string_len(s->path_pieces[s->len],pos,ptr-pos);
! 99:
! 100: s->len += 1;
! 101: }
! 102: }
! 103:
! 104: SETDEFAULTS_FUNC(mod_evhost_set_defaults) {
! 105: plugin_data *p = p_d;
! 106: size_t i;
! 107:
! 108: /**
! 109: *
! 110: * #
! 111: * # define a pattern for the host url finding
! 112: * # %% => % sign
! 113: * # %0 => domain name + tld
! 114: * # %1 => tld
! 115: * # %2 => domain name without tld
! 116: * # %3 => subdomain 1 name
! 117: * # %4 => subdomain 2 name
! 118: * # %_ => fqdn (without port info)
! 119: * #
! 120: * evhost.path-pattern = "/home/ckruse/dev/www/%3/htdocs/"
! 121: *
! 122: */
! 123:
! 124: config_values_t cv[] = {
! 125: { "evhost.path-pattern", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION },
! 126: { NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
! 127: };
! 128:
! 129: if (!p) return HANDLER_ERROR;
! 130:
! 131: p->config_storage = calloc(1, srv->config_context->used * sizeof(specific_config *));
! 132:
! 133: for (i = 0; i < srv->config_context->used; i++) {
! 134: plugin_config *s;
! 135:
! 136: s = calloc(1, sizeof(plugin_config));
! 137: s->path_pieces_raw = buffer_init();
! 138: s->path_pieces = NULL;
! 139: s->len = 0;
! 140:
! 141: cv[0].destination = s->path_pieces_raw;
! 142:
! 143: p->config_storage[i] = s;
! 144:
! 145: if (0 != config_insert_values_global(srv, ((data_config *)srv->config_context->data[i])->value, cv)) {
! 146: return HANDLER_ERROR;
! 147: }
! 148:
! 149: if (s->path_pieces_raw->used != 0) {
! 150: mod_evhost_parse_pattern(s);
! 151: }
! 152: }
! 153:
! 154: return HANDLER_GO_ON;
! 155: }
! 156:
! 157: /**
! 158: * assign the different parts of the domain to array-indezes (sub2.sub1.domain.tld)
! 159: * - %0 - domain.tld
! 160: * - %1 - tld
! 161: * - %2 - domain
! 162: * - %3 - sub1
! 163: * - ...
! 164: */
! 165:
! 166: static int mod_evhost_parse_host(connection *con,array *host) {
! 167: /* con->uri.authority->used is always > 0 if we come here */
! 168: register char *ptr = con->uri.authority->ptr + con->uri.authority->used - 1;
! 169: char *colon = ptr; /* needed to filter out the colon (if exists) */
! 170: int first = 1;
! 171: data_string *ds;
! 172: int i;
! 173:
! 174: /* first, find the domain + tld */
! 175: for(;ptr > con->uri.authority->ptr;ptr--) {
! 176: if(*ptr == '.') {
! 177: if(first) first = 0;
! 178: else break;
! 179: } else if(*ptr == ':') {
! 180: colon = ptr;
! 181: first = 1;
! 182: }
! 183: }
! 184:
! 185: ds = data_string_init();
! 186: buffer_copy_string_len(ds->key,CONST_STR_LEN("%0"));
! 187:
! 188: /* if we stopped at a dot, skip the dot */
! 189: if (*ptr == '.') ptr++;
! 190: buffer_copy_string_len(ds->value, ptr, colon-ptr);
! 191:
! 192: array_insert_unique(host,(data_unset *)ds);
! 193:
! 194: /* if the : is not the start of the authority, go on parsing the hostname */
! 195:
! 196: if (colon != con->uri.authority->ptr) {
! 197: for(ptr = colon - 1, i = 1; ptr > con->uri.authority->ptr; ptr--) {
! 198: if(*ptr == '.') {
! 199: if (ptr != colon - 1) {
! 200: /* is something between the dots */
! 201: ds = data_string_init();
! 202: buffer_copy_string_len(ds->key,CONST_STR_LEN("%"));
! 203: buffer_append_long(ds->key, i++);
! 204: buffer_copy_string_len(ds->value,ptr+1,colon-ptr-1);
! 205:
! 206: array_insert_unique(host,(data_unset *)ds);
! 207: }
! 208: colon = ptr;
! 209: }
! 210: }
! 211:
! 212: /* if the . is not the first charactor of the hostname */
! 213: if (colon != ptr) {
! 214: ds = data_string_init();
! 215: buffer_copy_string_len(ds->key,CONST_STR_LEN("%"));
! 216: buffer_append_long(ds->key, i /* ++ */);
! 217: buffer_copy_string_len(ds->value,ptr,colon-ptr);
! 218:
! 219: array_insert_unique(host,(data_unset *)ds);
! 220: }
! 221: }
! 222:
! 223: return 0;
! 224: }
! 225:
! 226: #define PATCH(x) \
! 227: p->conf.x = s->x;
! 228: static int mod_evhost_patch_connection(server *srv, connection *con, plugin_data *p) {
! 229: size_t i, j;
! 230: plugin_config *s = p->config_storage[0];
! 231:
! 232: PATCH(path_pieces);
! 233: PATCH(len);
! 234:
! 235: /* skip the first, the global context */
! 236: for (i = 1; i < srv->config_context->used; i++) {
! 237: data_config *dc = (data_config *)srv->config_context->data[i];
! 238: s = p->config_storage[i];
! 239:
! 240: /* condition didn't match */
! 241: if (!config_check_cond(srv, con, dc)) continue;
! 242:
! 243: /* merge config */
! 244: for (j = 0; j < dc->value->used; j++) {
! 245: data_unset *du = dc->value->data[j];
! 246:
! 247: if (buffer_is_equal_string(du->key, CONST_STR_LEN("evhost.path-pattern"))) {
! 248: PATCH(path_pieces);
! 249: PATCH(len);
! 250: }
! 251: }
! 252: }
! 253:
! 254: return 0;
! 255: }
! 256: #undef PATCH
! 257:
! 258:
! 259: static handler_t mod_evhost_uri_handler(server *srv, connection *con, void *p_d) {
! 260: plugin_data *p = p_d;
! 261: size_t i;
! 262: array *parsed_host;
! 263: register char *ptr;
! 264: int not_good = 0;
! 265: stat_cache_entry *sce = NULL;
! 266:
! 267: /* not authority set */
! 268: if (con->uri.authority->used == 0) return HANDLER_GO_ON;
! 269:
! 270: mod_evhost_patch_connection(srv, con, p);
! 271:
! 272: /* missing even default(global) conf */
! 273: if (0 == p->conf.len) {
! 274: return HANDLER_GO_ON;
! 275: }
! 276:
! 277: parsed_host = array_init();
! 278:
! 279: mod_evhost_parse_host(con, parsed_host);
! 280:
! 281: /* build document-root */
! 282: buffer_reset(p->tmp_buf);
! 283:
! 284: for (i = 0; i < p->conf.len; i++) {
! 285: ptr = p->conf.path_pieces[i]->ptr;
! 286: if (*ptr == '%') {
! 287: data_string *ds;
! 288:
! 289: if (*(ptr+1) == '%') {
! 290: /* %% */
! 291: buffer_append_string_len(p->tmp_buf,CONST_STR_LEN("%"));
! 292: } else if (*(ptr+1) == '_' ) {
! 293: /* %_ == full hostname */
! 294: char *colon = strchr(con->uri.authority->ptr, ':');
! 295:
! 296: if(colon == NULL) {
! 297: buffer_append_string_buffer(p->tmp_buf, con->uri.authority); /* adds fqdn */
! 298: } else {
! 299: /* strip the port out of the authority-part of the URI scheme */
! 300: buffer_append_string_len(p->tmp_buf, con->uri.authority->ptr, colon - con->uri.authority->ptr); /* adds fqdn */
! 301: }
! 302: } else if (NULL != (ds = (data_string *)array_get_element(parsed_host,p->conf.path_pieces[i]->ptr))) {
! 303: if (ds->value->used) {
! 304: buffer_append_string_buffer(p->tmp_buf,ds->value);
! 305: }
! 306: } else {
! 307: /* unhandled %-sequence */
! 308: }
! 309: } else {
! 310: buffer_append_string_buffer(p->tmp_buf,p->conf.path_pieces[i]);
! 311: }
! 312: }
! 313:
! 314: BUFFER_APPEND_SLASH(p->tmp_buf);
! 315:
! 316: array_free(parsed_host);
! 317:
! 318: if (HANDLER_ERROR == stat_cache_get_entry(srv, con, p->tmp_buf, &sce)) {
! 319: log_error_write(srv, __FILE__, __LINE__, "sb", strerror(errno), p->tmp_buf);
! 320: not_good = 1;
! 321: } else if(!S_ISDIR(sce->st.st_mode)) {
! 322: log_error_write(srv, __FILE__, __LINE__, "sb", "not a directory:", p->tmp_buf);
! 323: not_good = 1;
! 324: }
! 325:
! 326: if (!not_good) {
! 327: buffer_copy_string_buffer(con->physical.doc_root, p->tmp_buf);
! 328: }
! 329:
! 330: return HANDLER_GO_ON;
! 331: }
! 332:
! 333: int mod_evhost_plugin_init(plugin *p);
! 334: int mod_evhost_plugin_init(plugin *p) {
! 335: p->version = LIGHTTPD_VERSION_ID;
! 336: p->name = buffer_init_string("evhost");
! 337: p->init = mod_evhost_init;
! 338: p->set_defaults = mod_evhost_set_defaults;
! 339: p->handle_docroot = mod_evhost_uri_handler;
! 340: p->cleanup = mod_evhost_free;
! 341:
! 342: p->data = NULL;
! 343:
! 344: return 0;
! 345: }
! 346:
! 347: /* eof */
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