Annotation of embedaddon/lighttpd/src/mod_evhost.c, revision 1.1.1.3
1.1.1.3 ! misho 1: #include "first.h"
! 2:
1.1 misho 3: #include "plugin.h"
4: #include "log.h"
5: #include "response.h"
6: #include "stat_cache.h"
7:
8: #include <string.h>
9: #include <errno.h>
10: #include <ctype.h>
11:
12: typedef struct {
13: /* unparsed pieces */
14: buffer *path_pieces_raw;
15:
16: /* pieces for path creation */
17: size_t len;
18: buffer **path_pieces;
19: } plugin_config;
20:
21: typedef struct {
22: PLUGIN_DATA;
23: buffer *tmp_buf;
24:
25: plugin_config **config_storage;
26: plugin_config conf;
27: } plugin_data;
28:
29: INIT_FUNC(mod_evhost_init) {
30: plugin_data *p;
31:
32: p = calloc(1, sizeof(*p));
33:
34: p->tmp_buf = buffer_init();
35:
36: return p;
37: }
38:
39: FREE_FUNC(mod_evhost_free) {
40: plugin_data *p = p_d;
41:
42: UNUSED(srv);
43:
44: if (!p) return HANDLER_GO_ON;
45:
46: if (p->config_storage) {
47: size_t i;
48: for (i = 0; i < srv->config_context->used; i++) {
49: plugin_config *s = p->config_storage[i];
50:
1.1.1.3 ! misho 51: if (NULL == s) continue;
1.1 misho 52:
53: if(s->path_pieces) {
54: size_t j;
55: for (j = 0; j < s->len; j++) {
56: buffer_free(s->path_pieces[j]);
57: }
58:
59: free(s->path_pieces);
60: }
61:
62: buffer_free(s->path_pieces_raw);
63:
64: free(s);
65: }
66: free(p->config_storage);
67: }
68:
69: buffer_free(p->tmp_buf);
70:
71: free(p);
72:
73: return HANDLER_GO_ON;
74: }
75:
76: static void mod_evhost_parse_pattern(plugin_config *s) {
77: char *ptr = s->path_pieces_raw->ptr,*pos;
78:
79: s->path_pieces = NULL;
80:
81: for(pos=ptr;*ptr;ptr++) {
82: if(*ptr == '%') {
83: s->path_pieces = realloc(s->path_pieces,(s->len+2) * sizeof(*s->path_pieces));
84: s->path_pieces[s->len] = buffer_init();
85: s->path_pieces[s->len+1] = buffer_init();
86:
87: buffer_copy_string_len(s->path_pieces[s->len],pos,ptr-pos);
88: pos = ptr + 2;
89:
90: buffer_copy_string_len(s->path_pieces[s->len+1],ptr++,2);
91:
92: s->len += 2;
93: }
94: }
95:
96: if(*pos != '\0') {
97: s->path_pieces = realloc(s->path_pieces,(s->len+1) * sizeof(*s->path_pieces));
98: s->path_pieces[s->len] = buffer_init();
99:
100: buffer_copy_string_len(s->path_pieces[s->len],pos,ptr-pos);
101:
102: s->len += 1;
103: }
104: }
105:
106: SETDEFAULTS_FUNC(mod_evhost_set_defaults) {
107: plugin_data *p = p_d;
108: size_t i;
109:
110: /**
111: *
112: * #
113: * # define a pattern for the host url finding
114: * # %% => % sign
115: * # %0 => domain name + tld
116: * # %1 => tld
117: * # %2 => domain name without tld
118: * # %3 => subdomain 1 name
119: * # %4 => subdomain 2 name
120: * # %_ => fqdn (without port info)
121: * #
122: * evhost.path-pattern = "/home/ckruse/dev/www/%3/htdocs/"
123: *
124: */
125:
126: config_values_t cv[] = {
127: { "evhost.path-pattern", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION },
128: { NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
129: };
130:
131: if (!p) return HANDLER_ERROR;
132:
1.1.1.2 misho 133: p->config_storage = calloc(1, srv->config_context->used * sizeof(plugin_config *));
1.1 misho 134:
135: for (i = 0; i < srv->config_context->used; i++) {
1.1.1.3 ! misho 136: data_config const* config = (data_config const*)srv->config_context->data[i];
1.1 misho 137: plugin_config *s;
138:
139: s = calloc(1, sizeof(plugin_config));
140: s->path_pieces_raw = buffer_init();
141: s->path_pieces = NULL;
142: s->len = 0;
143:
144: cv[0].destination = s->path_pieces_raw;
145:
146: p->config_storage[i] = s;
147:
1.1.1.3 ! misho 148: if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
1.1 misho 149: return HANDLER_ERROR;
150: }
151:
1.1.1.3 ! misho 152: if (!buffer_string_is_empty(s->path_pieces_raw)) {
1.1 misho 153: mod_evhost_parse_pattern(s);
154: }
155: }
156:
157: return HANDLER_GO_ON;
158: }
159:
160: /**
161: * assign the different parts of the domain to array-indezes (sub2.sub1.domain.tld)
162: * - %0 - domain.tld
163: * - %1 - tld
164: * - %2 - domain
165: * - %3 - sub1
166: * - ...
167: */
168:
169: static int mod_evhost_parse_host(connection *con,array *host) {
1.1.1.3 ! misho 170: register char *ptr = con->uri.authority->ptr + buffer_string_length(con->uri.authority);
1.1 misho 171: char *colon = ptr; /* needed to filter out the colon (if exists) */
172: int first = 1;
173: data_string *ds;
174: int i;
175:
176: /* first, find the domain + tld */
177: for(;ptr > con->uri.authority->ptr;ptr--) {
178: if(*ptr == '.') {
179: if(first) first = 0;
180: else break;
181: } else if(*ptr == ':') {
182: colon = ptr;
183: first = 1;
184: }
185: }
186:
187: ds = data_string_init();
188: buffer_copy_string_len(ds->key,CONST_STR_LEN("%0"));
189:
190: /* if we stopped at a dot, skip the dot */
191: if (*ptr == '.') ptr++;
192: buffer_copy_string_len(ds->value, ptr, colon-ptr);
193:
194: array_insert_unique(host,(data_unset *)ds);
195:
196: /* if the : is not the start of the authority, go on parsing the hostname */
197:
198: if (colon != con->uri.authority->ptr) {
199: for(ptr = colon - 1, i = 1; ptr > con->uri.authority->ptr; ptr--) {
200: if(*ptr == '.') {
201: if (ptr != colon - 1) {
202: /* is something between the dots */
203: ds = data_string_init();
204: buffer_copy_string_len(ds->key,CONST_STR_LEN("%"));
1.1.1.3 ! misho 205: buffer_append_int(ds->key, i++);
1.1 misho 206: buffer_copy_string_len(ds->value,ptr+1,colon-ptr-1);
207:
208: array_insert_unique(host,(data_unset *)ds);
209: }
210: colon = ptr;
211: }
212: }
213:
214: /* if the . is not the first charactor of the hostname */
215: if (colon != ptr) {
216: ds = data_string_init();
217: buffer_copy_string_len(ds->key,CONST_STR_LEN("%"));
1.1.1.3 ! misho 218: buffer_append_int(ds->key, i /* ++ */);
1.1 misho 219: buffer_copy_string_len(ds->value,ptr,colon-ptr);
220:
221: array_insert_unique(host,(data_unset *)ds);
222: }
223: }
224:
225: return 0;
226: }
227:
228: #define PATCH(x) \
229: p->conf.x = s->x;
230: static int mod_evhost_patch_connection(server *srv, connection *con, plugin_data *p) {
231: size_t i, j;
232: plugin_config *s = p->config_storage[0];
233:
234: PATCH(path_pieces);
235: PATCH(len);
236:
237: /* skip the first, the global context */
238: for (i = 1; i < srv->config_context->used; i++) {
239: data_config *dc = (data_config *)srv->config_context->data[i];
240: s = p->config_storage[i];
241:
242: /* condition didn't match */
243: if (!config_check_cond(srv, con, dc)) continue;
244:
245: /* merge config */
246: for (j = 0; j < dc->value->used; j++) {
247: data_unset *du = dc->value->data[j];
248:
249: if (buffer_is_equal_string(du->key, CONST_STR_LEN("evhost.path-pattern"))) {
250: PATCH(path_pieces);
251: PATCH(len);
252: }
253: }
254: }
255:
256: return 0;
257: }
258: #undef PATCH
259:
260:
261: static handler_t mod_evhost_uri_handler(server *srv, connection *con, void *p_d) {
262: plugin_data *p = p_d;
263: size_t i;
264: array *parsed_host;
265: register char *ptr;
266: int not_good = 0;
267: stat_cache_entry *sce = NULL;
268:
269: /* not authority set */
1.1.1.3 ! misho 270: if (buffer_string_is_empty(con->uri.authority)) return HANDLER_GO_ON;
1.1 misho 271:
272: mod_evhost_patch_connection(srv, con, p);
273:
274: /* missing even default(global) conf */
275: if (0 == p->conf.len) {
276: return HANDLER_GO_ON;
277: }
278:
279: parsed_host = array_init();
280:
281: mod_evhost_parse_host(con, parsed_host);
282:
283: /* build document-root */
284: buffer_reset(p->tmp_buf);
285:
286: for (i = 0; i < p->conf.len; i++) {
287: ptr = p->conf.path_pieces[i]->ptr;
288: if (*ptr == '%') {
289: data_string *ds;
290:
291: if (*(ptr+1) == '%') {
292: /* %% */
293: buffer_append_string_len(p->tmp_buf,CONST_STR_LEN("%"));
294: } else if (*(ptr+1) == '_' ) {
295: /* %_ == full hostname */
296: char *colon = strchr(con->uri.authority->ptr, ':');
297:
298: if(colon == NULL) {
299: buffer_append_string_buffer(p->tmp_buf, con->uri.authority); /* adds fqdn */
300: } else {
301: /* strip the port out of the authority-part of the URI scheme */
302: buffer_append_string_len(p->tmp_buf, con->uri.authority->ptr, colon - con->uri.authority->ptr); /* adds fqdn */
303: }
304: } else if (NULL != (ds = (data_string *)array_get_element(parsed_host,p->conf.path_pieces[i]->ptr))) {
1.1.1.3 ! misho 305: buffer_append_string_buffer(p->tmp_buf,ds->value);
1.1 misho 306: } else {
307: /* unhandled %-sequence */
308: }
309: } else {
310: buffer_append_string_buffer(p->tmp_buf,p->conf.path_pieces[i]);
311: }
312: }
313:
1.1.1.3 ! misho 314: buffer_append_slash(p->tmp_buf);
1.1 misho 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) {
1.1.1.3 ! misho 327: buffer_copy_buffer(con->physical.doc_root, p->tmp_buf);
1.1 misho 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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