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1.1 misho 1: #include "base.h"
2: #include "log.h"
3: #include "buffer.h"
4:
5: #include "plugin.h"
6:
7: #include "response.h"
8:
9: #include <stdlib.h>
10: #include <string.h>
11:
12: /* plugin config for all request/connections */
13:
14: typedef struct {
15: int handled; /* make sure that we only apply the headers once */
16: } handler_ctx;
17:
18: typedef struct {
19: array *request_header;
20: array *response_header;
21:
22: array *environment;
23: } plugin_config;
24:
25: typedef struct {
26: PLUGIN_DATA;
27:
28: plugin_config **config_storage;
29:
30: plugin_config conf;
31: } plugin_data;
32:
33: static handler_ctx * handler_ctx_init(void) {
34: handler_ctx * hctx;
35:
36: hctx = calloc(1, sizeof(*hctx));
37:
38: hctx->handled = 0;
39:
40: return hctx;
41: }
42:
43: static void handler_ctx_free(handler_ctx *hctx) {
44: free(hctx);
45: }
46:
47:
48: /* init the plugin data */
49: INIT_FUNC(mod_setenv_init) {
50: plugin_data *p;
51:
52: p = calloc(1, sizeof(*p));
53:
54: return p;
55: }
56:
57: /* detroy the plugin data */
58: FREE_FUNC(mod_setenv_free) {
59: plugin_data *p = p_d;
60:
61: UNUSED(srv);
62:
63: if (!p) return HANDLER_GO_ON;
64:
65: if (p->config_storage) {
66: size_t i;
67: for (i = 0; i < srv->config_context->used; i++) {
68: plugin_config *s = p->config_storage[i];
69:
70: array_free(s->request_header);
71: array_free(s->response_header);
72: array_free(s->environment);
73:
74: free(s);
75: }
76: free(p->config_storage);
77: }
78:
79: free(p);
80:
81: return HANDLER_GO_ON;
82: }
83:
84: /* handle plugin config and check values */
85:
86: SETDEFAULTS_FUNC(mod_setenv_set_defaults) {
87: plugin_data *p = p_d;
88: size_t i = 0;
89:
90: config_values_t cv[] = {
91: { "setenv.add-request-header", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
92: { "setenv.add-response-header", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
93: { "setenv.add-environment", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 2 */
94: { NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
95: };
96:
97: if (!p) return HANDLER_ERROR;
98:
99: p->config_storage = calloc(1, srv->config_context->used * sizeof(specific_config *));
100:
101: for (i = 0; i < srv->config_context->used; i++) {
102: plugin_config *s;
103:
104: s = calloc(1, sizeof(plugin_config));
105: s->request_header = array_init();
106: s->response_header = array_init();
107: s->environment = array_init();
108:
109: cv[0].destination = s->request_header;
110: cv[1].destination = s->response_header;
111: cv[2].destination = s->environment;
112:
113: p->config_storage[i] = s;
114:
115: if (0 != config_insert_values_global(srv, ((data_config *)srv->config_context->data[i])->value, cv)) {
116: return HANDLER_ERROR;
117: }
118: }
119:
120: return HANDLER_GO_ON;
121: }
122:
123: #define PATCH(x) \
124: p->conf.x = s->x;
125: static int mod_setenv_patch_connection(server *srv, connection *con, plugin_data *p) {
126: size_t i, j;
127: plugin_config *s = p->config_storage[0];
128:
129: PATCH(request_header);
130: PATCH(response_header);
131: PATCH(environment);
132:
133: /* skip the first, the global context */
134: for (i = 1; i < srv->config_context->used; i++) {
135: data_config *dc = (data_config *)srv->config_context->data[i];
136: s = p->config_storage[i];
137:
138: /* condition didn't match */
139: if (!config_check_cond(srv, con, dc)) continue;
140:
141: /* merge config */
142: for (j = 0; j < dc->value->used; j++) {
143: data_unset *du = dc->value->data[j];
144:
145: if (buffer_is_equal_string(du->key, CONST_STR_LEN("setenv.add-request-header"))) {
146: PATCH(request_header);
147: } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("setenv.add-response-header"))) {
148: PATCH(response_header);
149: } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("setenv.add-environment"))) {
150: PATCH(environment);
151: }
152: }
153: }
154:
155: return 0;
156: }
157: #undef PATCH
158:
159: URIHANDLER_FUNC(mod_setenv_uri_handler) {
160: plugin_data *p = p_d;
161: size_t k;
162: handler_ctx *hctx;
163:
164: if (con->plugin_ctx[p->id]) {
165: hctx = con->plugin_ctx[p->id];
166: } else {
167: hctx = handler_ctx_init();
168:
169: con->plugin_ctx[p->id] = hctx;
170: }
171:
172: if (hctx->handled) {
173: return HANDLER_GO_ON;
174: }
175:
176: hctx->handled = 1;
177:
178: mod_setenv_patch_connection(srv, con, p);
179:
180: for (k = 0; k < p->conf.request_header->used; k++) {
181: data_string *ds = (data_string *)p->conf.request_header->data[k];
182: data_string *ds_dst;
183:
184: if (NULL == (ds_dst = (data_string *)array_get_unused_element(con->request.headers, TYPE_STRING))) {
185: ds_dst = data_string_init();
186: }
187:
188: buffer_copy_string_buffer(ds_dst->key, ds->key);
189: buffer_copy_string_buffer(ds_dst->value, ds->value);
190:
191: array_insert_unique(con->request.headers, (data_unset *)ds_dst);
192: }
193:
194: for (k = 0; k < p->conf.environment->used; k++) {
195: data_string *ds = (data_string *)p->conf.environment->data[k];
196: data_string *ds_dst;
197:
198: if (NULL == (ds_dst = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
199: ds_dst = data_string_init();
200: }
201:
202: buffer_copy_string_buffer(ds_dst->key, ds->key);
203: buffer_copy_string_buffer(ds_dst->value, ds->value);
204:
205: array_insert_unique(con->environment, (data_unset *)ds_dst);
206: }
207:
208: for (k = 0; k < p->conf.response_header->used; k++) {
209: data_string *ds = (data_string *)p->conf.response_header->data[k];
210:
211: response_header_insert(srv, con, CONST_BUF_LEN(ds->key), CONST_BUF_LEN(ds->value));
212: }
213:
214: /* not found */
215: return HANDLER_GO_ON;
216: }
217:
218: CONNECTION_FUNC(mod_setenv_reset) {
219: plugin_data *p = p_d;
220:
221: UNUSED(srv);
222:
223: if (con->plugin_ctx[p->id]) {
224: handler_ctx_free(con->plugin_ctx[p->id]);
225: con->plugin_ctx[p->id] = NULL;
226: }
227:
228: return HANDLER_GO_ON;
229: }
230:
231: /* this function is called at dlopen() time and inits the callbacks */
232:
233: int mod_setenv_plugin_init(plugin *p);
234: int mod_setenv_plugin_init(plugin *p) {
235: p->version = LIGHTTPD_VERSION_ID;
236: p->name = buffer_init_string("setenv");
237:
238: p->init = mod_setenv_init;
239: p->handle_uri_clean = mod_setenv_uri_handler;
240: p->set_defaults = mod_setenv_set_defaults;
241: p->cleanup = mod_setenv_free;
242:
243: p->connection_reset = mod_setenv_reset;
244:
245: p->data = NULL;
246:
247: return 0;
248: }