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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:
1.1.1.2 ! misho 131: p->config_storage = calloc(1, srv->config_context->used * sizeof(plugin_config *));
1.1 misho 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 */