4 #include <microhttpd.h>
5 #include <yajl/yajl_gen.h>
9 #include "canned_responses.h"
13 #define URL_INFO_AUTHOR 0x1
14 #define URL_INFO_RECORD 0x2
15 #define DERP "DERP DERP DERP"
18 struct MHD_PostProcessor *pp;
24 struct MHD_PostProcessor *pp;
38 int parse_url_info(const char *url, char *author, uint64_t *record) {
51 memcpy(author, url, len);
53 ret |= URL_INFO_AUTHOR;
55 if (c != NULL && c[1] != 0) {
56 *record = strtoull(c + 1, NULL, 10);
57 ret |= URL_INFO_RECORD;
63 uint64_t *make_sequential_list(uint64_t from, uint64_t to) {
64 uint64_t len = to - from + 1;
65 uint64_t *list = malloc(len * sizeof(uint64_t));
68 for (i = 0; i < len; i++) {
75 ssize_t GET_generate_list(void *cls, uint64_t pos, char *buf, size_t max) {
76 struct get_state *gs = cls;
77 const unsigned char *ybuf;
83 yajl_gen_get_buf(gs->g, &ybuf, &len);
84 size_t bytes_remaining = len - gs->yoff;
85 if (bytes_remaining > max) {
86 memcpy(buf, ybuf + gs->yoff, max);
90 memcpy(buf, ybuf + gs->yoff, bytes_remaining);
92 yajl_gen_clear(gs->g);
93 return bytes_remaining;
100 if (pos == 0) { /* Start iterating */
101 yajl_gen_array_open(gs->g);
104 /* Snarf one record */
105 blerg_fetch(gs->b, gs->entries[gs->i], &data, &len);
107 yajl_gen_map_open(gs->g);
108 yajl_gen_string(gs->g, "record", 6);
109 snprintf(number, 21, "%llu", gs->entries[gs->i]);
110 yajl_gen_string(gs->g, number, strlen(number));
111 yajl_gen_string(gs->g, "data", 4);
112 yajl_gen_string(gs->g, data, len);
113 yajl_gen_map_close(gs->g);
117 yajl_gen_array_close(gs->g);
123 yajl_gen_get_buf(gs->g, &ybuf, &len);
125 memcpy(buf, ybuf, max);
129 memcpy(buf, ybuf, len);
130 yajl_gen_clear(gs->g);
135 void GET_generate_list_free(void *cls) {
136 struct get_state *gs = cls;
139 yajl_gen_free(gs->g);
144 int POST_create_iterator(void *cls, enum MHD_ValueKind kind, const char *key, const char *filename, const char *content_type, const char *transfer_encoding, const char *data, uint64_t off, size_t size) {
145 struct create_state *cs = cls;
147 if (strncmp(key, "username", 9) == 0) {
148 if (size > 32) size = 32;
149 memcpy(cs->username, data, size);
150 cs->username[size] = 0;
151 } else if (strncmp(key, "password", 9) == 0) {
152 if (size > 32) size = 32;
153 memcpy(cs->password, data, size);
154 cs->password[size] = 0;
160 int POST_put_iterator(void *cls, enum MHD_ValueKind kind, const char *key, const char *filename, const char *content_type, const char *transfer_encoding, const char *data, uint64_t off, size_t size) {
161 struct put_state *ps = cls;
163 if (strncmp(key, "data", 5) == 0) {
164 if (ps->data == NULL) {
165 ps->data_size = size;
166 ps->data = malloc(size);
168 if (ps->data_size + size > MAX_RECORD_SIZE) {
169 size = MAX_RECORD_SIZE - ps->data_size;
171 ps->data_size += size;
172 ps->data = realloc(ps->data, ps->data_size);
174 memcpy(ps->data + off, data, size);
175 if (ps->data_size == MAX_RECORD_SIZE)
183 ahc_derp (void *cls, struct MHD_Connection *connection, const char *url, const char *method,
184 const char *version, const char *upload_data, size_t *upload_data_size, void **ptr) {
185 struct MHD_Response *response;
191 if (strncmp(url, "/get", 4) == 0 && strlen(url) > 4) {
193 if (strcmp(method, MHD_HTTP_METHOD_GET) != 0)
194 return respond_405(connection);
201 return respond_404(connection);
203 ret = parse_url_info(url + 5, author, &record);
204 if ((ret & URL_INFO_AUTHOR) == 0)
205 return respond_404(connection);
207 if (!blerg_exists(author))
208 return respond_404(connection);
212 if (ret & URL_INFO_RECORD) {
213 struct blerg *b = blerg_open(author);
214 ret = blerg_fetch(b, record, &data, &len);
218 return respond_404(connection);
220 response = MHD_create_response_from_data(len, data, MHD_YES, MHD_NO);
221 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
223 MHD_destroy_response(response);
226 struct get_state *gs = malloc(sizeof(struct get_state));
227 gs->b = blerg_open(author);
228 uint64_t record_count = blerg_get_record_count(gs->b);
229 if (record_count == 0) {
230 response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO);
232 uint64_t from, to, i, j;
233 to = record_count - 1;
234 from = (record_count > 50 ? to - 49 : 0);
235 gs->entries = make_sequential_list(from, to);
241 gs->g = yajl_gen_alloc(&c, NULL);
242 gs->yoff = gs->done = 0;
244 response = MHD_create_response_from_callback(-1, 262144, &GET_generate_list, gs, &GET_generate_list_free);
247 ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
248 MHD_destroy_response(response);
252 } else if (strncmp(url, "/put", 4) == 0) {
253 struct put_state *ps = (struct put_state *) *ptr;
258 if (strcmp(method, MHD_HTTP_METHOD_POST) != 0)
259 return respond_405(connection);
262 return respond_404(connection);
266 username = MHD_digest_auth_get_username(connection);
267 if (username == NULL)
268 return respond_401(connection, MHD_NO);
269 auth_get_password(username, password);
271 ret = MHD_digest_auth_check(connection, REALM, username, password, 300);
274 if (ret == MHD_INVALID_NONCE || ret == MHD_NO)
275 return respond_401(connection, (ret == MHD_INVALID_NONCE) ? MHD_YES : MHD_NO);
277 struct put_state *ps = malloc(sizeof(struct put_state));
280 ps->pp = MHD_create_post_processor(connection, 16384, &POST_put_iterator, ps);
285 if (*upload_data_size) {
286 MHD_post_process(ps->pp, upload_data, *upload_data_size);
287 *upload_data_size = 0;
291 if (ps->data == NULL || ps->data_size == 0)
292 return respond_JSON_Failure(connection);
294 username = MHD_digest_auth_get_username(connection);
295 struct blerg *b = blerg_open(username);
297 return respond_JSON_Failure(connection);
298 if (blerg_store(b, ps->data, ps->data_size) == -1) {
300 return respond_JSON_Failure(connection);
304 MHD_destroy_post_processor(ps->pp);
310 return respond_JSON_Success(connection);
311 } else if (strncmp(url, "/create", 8) == 0) {
312 struct create_state *cs = (struct create_state *) *ptr;
315 if (strcmp(method, MHD_HTTP_METHOD_POST) != 0)
316 return respond_405(connection);
318 struct create_state *cs = malloc(sizeof(struct create_state));
319 cs->username[0] = cs->password[0] = 0;
320 cs->pp = MHD_create_post_processor(connection, 1024, &POST_create_iterator, cs);
325 if (*upload_data_size) {
326 MHD_post_process(cs->pp, upload_data, *upload_data_size);
327 *upload_data_size = 0;
331 if (cs->username[0] == 0 || cs->password[0] == 0)
332 return respond_JSON_Failure(connection);
334 if (blerg_exists(cs->username))
335 return respond_JSON_Failure(connection);
337 struct blerg *b = blerg_open(cs->username);
339 auth_set_password(cs->username, cs->password);
341 MHD_destroy_post_processor(cs->pp);
345 return respond_JSON_Success(connection);
347 return respond_404(connection);
352 int main(int argc, char *argv[]) {
353 struct MHD_Daemon *daemon;
359 daemon = MHD_start_daemon(MHD_USE_DEBUG, 8080, NULL, NULL, &ahc_derp, NULL, MHD_OPTION_END);
360 if (daemon == NULL) {
361 fprintf(stderr, "Could not start web server\n");
366 FD_ZERO(&rs); FD_ZERO(&ws); FD_ZERO(&es);
367 if (MHD_get_fdset(daemon, &rs, &ws, &es, &max) != MHD_YES) {
368 fprintf(stderr, "Fatal error getting fd sets\n");
371 select(max + 1, &rs, &ws, &es, NULL);
374 MHD_stop_daemon(daemon);