X-Git-Url: http://git.bytex64.net/?a=blobdiff_plain;f=http_blerg.c;h=93d09840307dd65bb00ca08a9c6cbab458bc8410;hb=97d379a62944d0be7d760f744a7efff7acfc2b4b;hp=8abebaa361f98909e9406a0925341b16a88c1cab;hpb=112785b41fd9c5386a07ff5fe3a48d9ff9ae1185;p=blerg.git diff --git a/http_blerg.c b/http_blerg.c index 8abebaa..93d0984 100644 --- a/http_blerg.c +++ b/http_blerg.c @@ -2,28 +2,54 @@ #include #include #include +#include #include "database.h" #include "tags.h" +#include "auth.h" +#include "canned_responses.h" +#include "http.h" +#include "config.h" -#define URL_INFO_AUTHOR 0x1 -#define URL_INFO_RECORD 0x2 +#define URL_INFO_AUTHOR 0x1 +#define URL_INFO_RECORD 0x2 +#define URL_INFO_RECORD_TO 0x4 #define DERP "DERP DERP DERP" -#define NOTFOUND "404 Not Found

404 Not Found

I couldn't find that." -struct MHD_Response *response404; +yajl_gen_config yajl_c = { 0, 0 }; -void init_responses() { - response404 = MHD_create_response_from_data(strlen(NOTFOUND), NOTFOUND, MHD_NO, MHD_NO); -} +struct create_state { + struct MHD_PostProcessor *pp; + char username[33]; + char password[33]; +}; -int respond_404(struct MHD_Connection *connection) { - return MHD_queue_response(connection, MHD_HTTP_NOT_FOUND, response404); -} +struct put_state { + struct MHD_PostProcessor *pp; + char *data; + int data_size; +}; + +struct get_state { + struct blerg *b; + yajl_gen g; + unsigned int yoff; + uint64_t *entries; + uint64_t i; + int done; +}; + +struct tag_state { + yajl_gen g; + unsigned int yoff; + struct tag *results; + uint64_t i; + int done; +}; -int parse_url_info(const char *url, char *author, uint64_t *record) { +int parse_url_info(const char *url, struct url_info *info) { const char *c; - int ret = 0; int len; + info->contents = 0; c = strchr(url, '/'); if (c == NULL) { @@ -33,16 +59,260 @@ int parse_url_info(const char *url, char *author, uint64_t *record) { } if (len == 0) return 0; - memcpy(author, url, len); - author[len] = 0; - ret |= URL_INFO_AUTHOR; + memcpy(info->author, url, len); + info->author[len] = 0; + info->contents |= URL_INFO_AUTHOR; + + if (c == NULL || c[1] == 0) + return info->contents; + + info->record = strtoull(c + 1, NULL, 10); + info->contents |= URL_INFO_RECORD; + + c = strchr(c, '-'); + if (c == NULL || c[1] == 0) + return info->contents; + + info->record_to = strtoull(c + 1, NULL, 10); + info->contents |= URL_INFO_RECORD_TO; + + return info->contents; +} + +uint64_t *make_sequential_list(uint64_t from, uint64_t to) { + uint64_t len = to - from + 1; + uint64_t *list = malloc(len * sizeof(uint64_t)); + uint64_t i; + + for (i = 0; i < len; i++) { + list[i] = from + i; + } + + return list; +} + +void json_generate_one_record(yajl_gen g, const char *author, struct blerg *b, uint64_t record) { + char *data; + char number[21]; + int len; + + if (!blerg_fetch(b, record, &data, &len)) { + fprintf(stderr, "Could not fetch record\n"); + return; + } + + yajl_gen_map_open(g); + if (author != NULL) { + yajl_gen_string(g, "author", 6); + yajl_gen_string(g, author, strlen(author)); + } + yajl_gen_string(g, "record", 6); + snprintf(number, 21, "%llu", record); + yajl_gen_string(g, number, strlen(number)); + yajl_gen_string(g, "timestamp", 9); + yajl_gen_integer(g, blerg_get_timestamp(b, record)); + yajl_gen_string(g, "data", 4); + yajl_gen_string(g, data, len); + yajl_gen_map_close(g); + + free(data); +} + +ssize_t GET_generate_list(void *cls, uint64_t pos, char *buf, size_t max) { + struct get_state *gs = cls; + const unsigned char *ybuf; + char *data; + char number[21]; + unsigned int len; + + if (gs->yoff > 0) { + yajl_gen_get_buf(gs->g, &ybuf, &len); + size_t bytes_remaining = len - gs->yoff; + if (bytes_remaining > max) { + memcpy(buf, ybuf + gs->yoff, max); + gs->yoff += max; + return max; + } else { + memcpy(buf, ybuf + gs->yoff, bytes_remaining); + gs->yoff = 0; + yajl_gen_clear(gs->g); + return bytes_remaining; + } + } + + if (gs->done) + return -1; + + if (pos == 0) { /* Start iterating */ + yajl_gen_array_open(gs->g); + } + + /* Snarf one record */ + json_generate_one_record(gs->g, NULL, gs->b, gs->entries[gs->i]); + + if (gs->i == 0) { + yajl_gen_array_close(gs->g); + gs->done = 1; + } + gs->i--; + + + yajl_gen_get_buf(gs->g, &ybuf, &len); + if (len > max) { + memcpy(buf, ybuf, max); + gs->yoff = max; + return max; + } else { + memcpy(buf, ybuf, len); + yajl_gen_clear(gs->g); + return len; + } +} + +void GET_generate_list_free(void *cls) { + struct get_state *gs = cls; + + blerg_close(gs->b); + yajl_gen_free(gs->g); + free(gs->entries); + free(gs); +} + +ssize_t GET_generate_taglist(void *cls, uint64_t pos, char *buf, size_t max) { + struct tag_state *ts = cls; + struct blerg *b; + const unsigned char *ybuf; + unsigned int len; + + if (ts->yoff > 0) { + yajl_gen_get_buf(ts->g, &ybuf, &len); + size_t bytes_remaining = len - ts->yoff; + if (bytes_remaining > max) { + memcpy(buf, ybuf + ts->yoff, max); + ts->yoff += max; + return max; + } else { + memcpy(buf, ybuf + ts->yoff, bytes_remaining); + ts->yoff = 0; + yajl_gen_clear(ts->g); + return bytes_remaining; + } + } + + if (ts->done) + return -1; + + if (pos == 0) { /* Start iterating */ + yajl_gen_array_open(ts->g); + } + + /* Snarf one record */ + b = blerg_open(ts->results[ts->i].author); + if (b == NULL) + goto skip_bad_blerg; + + json_generate_one_record(ts->g, ts->results[ts->i].author, b, ts->results[ts->i].record); + + blerg_close(b); + +skip_bad_blerg: + if (ts->i == 0) { + yajl_gen_array_close(ts->g); + ts->done = 1; + } + + ts->i--; + + yajl_gen_get_buf(ts->g, &ybuf, &len); + if (len > max) { + memcpy(buf, ybuf, max); + ts->yoff = max; + return max; + } else { + memcpy(buf, ybuf, len); + yajl_gen_clear(ts->g); + return len; + } +} + +void GET_generate_taglist_free(void *cls) { + struct tag_state *ts = cls; + + yajl_gen_free(ts->g); + free(ts->results); + free(ts); +} + +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) { + struct create_state *cs = cls; + + if (strncmp(key, "username", 9) == 0) { + if (size > 32) size = 32; + memcpy(cs->username, data, size); + cs->username[size] = 0; + } else if (strncmp(key, "password", 9) == 0) { + if (size > 32) size = 32; + memcpy(cs->password, data, size); + cs->password[size] = 0; + } + + return MHD_YES; +} + +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) { + struct put_state *ps = cls; + + if (strncmp(key, "data", 5) == 0) { + if (ps->data == NULL) { + ps->data_size = size; + ps->data = malloc(size); + } else { + if (ps->data_size + size > MAX_RECORD_SIZE) { + size = MAX_RECORD_SIZE - ps->data_size; + } + ps->data_size += size; + ps->data = realloc(ps->data, ps->data_size); + } + memcpy(ps->data + off, data, size); + if (ps->data_size == MAX_RECORD_SIZE) + return MHD_NO; + } + + return MHD_YES; +} - if (c != NULL && c[1] != 0) { - *record = strtoull(c + 1, NULL, 10); - ret |= URL_INFO_RECORD; +struct MHD_Response *create_response_for_range(struct blerg *b, uint64_t from, uint64_t to) { + struct MHD_Response *response; + struct get_state *gs = malloc(sizeof(struct get_state)); + gs->b = b; + + uint64_t record_count = blerg_get_record_count(b); + + if (from > to || from >= record_count || to >= record_count || to - from > 99) { + blerg_close(b); + free(gs); + return NULL; } - return ret; + gs->entries = make_sequential_list(from, to); + gs->i = to - from; + + gs->g = yajl_gen_alloc(&yajl_c, NULL); + gs->yoff = gs->done = 0; + + response = MHD_create_response_from_callback(-1, 262144, &GET_generate_list, gs, &GET_generate_list_free); + + return response; +} + +struct MHD_Response *create_tag_response(struct tag *results, uint64_t len) { + struct tag_state *ts = malloc(sizeof(struct tag_state)); + ts->g = yajl_gen_alloc(&yajl_c, NULL); + ts->results = results; + ts->i = len - 1; + ts->yoff = ts->done = 0; + + return MHD_create_response_from_callback(-1, 262144, &GET_generate_taglist, ts, &GET_generate_taglist_free); } static int @@ -50,52 +320,232 @@ ahc_derp (void *cls, struct MHD_Connection *connection, const char *url, const c const char *version, const char *upload_data, size_t *upload_data_size, void **ptr) { struct MHD_Response *response; int ret, len; - char author[33]; - uint64_t record; + struct url_info info; char *data; if (strncmp(url, "/get", 4) == 0 && strlen(url) > 4) { - if (strcmp(method, MHD_HTTP_METHOD_GET) != 0) - return MHD_NO; + if (*ptr == NULL) { + if (strcmp(method, MHD_HTTP_METHOD_GET) != 0) + return respond_405(connection); + + *ptr = (void *) 1; + return MHD_YES; + } + if (url[4] != '/') return respond_404(connection); - ret = parse_url_info(url + 5, author, &record); - if (ret & URL_INFO_AUTHOR == 0) + + ret = parse_url_info(url + 5, &info); + if ((ret & URL_INFO_AUTHOR) == 0) return respond_404(connection); - if (ret & URL_INFO_RECORD) { - if (*ptr == NULL) { - *ptr = (void *) 1; - return MHD_YES; - } else { - *ptr == NULL; - - struct blerg *b = blerg_open(author); - ret = blerg_fetch(b, record, &data, &len); - blerg_close(b); - - if (ret == 0) { - return respond_404(connection); - } else { - response = MHD_create_response_from_data(len, data, MHD_YES, MHD_NO); - ret = MHD_queue_response(connection, MHD_HTTP_OK, response); - } - MHD_destroy_response(response); - return ret; - } + if (!blerg_exists(info.author)) + return respond_404(connection); + + *ptr == NULL; + + struct blerg *b = blerg_open(info.author); + + if ((ret & URL_INFO_RECORD) && (ret & URL_INFO_RECORD_TO)) { + response = create_response_for_range(b, info.record, info.record_to); + } else if (ret & URL_INFO_RECORD) { + ret = blerg_fetch(b, info.record, &data, &len); + blerg_close(b); + + if (ret == 0) + return respond_404(connection); + response = MHD_create_response_from_data(len, data, MHD_YES, MHD_NO); } else { - if (*ptr == NULL) { - *ptr = (void*) 1; - return MHD_YES; + uint64_t record_count, from, to; + record_count = blerg_get_record_count(b); + if (record_count == 0) { + response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO); } else { - *ptr == NULL; - response = MHD_create_response_from_data(strlen(DERP), DERP, MHD_NO, MHD_NO); - ret = MHD_queue_response(connection, MHD_HTTP_OK, response); - MHD_destroy_response(response); - return ret; + to = record_count - 1; + from = (record_count > 50 ? to - 49 : 0); + response = create_response_for_range(b, from, to); } } + + if (response == NULL) + return respond_JSON_Failure(connection); + + ret = MHD_queue_response(connection, MHD_HTTP_OK, response); + MHD_destroy_response(response); + return ret; + } else if (strncmp(url, "/tag", 4) == 0 && strlen(url) > 4) { + if (*ptr == NULL) { + if (strcmp(method, MHD_HTTP_METHOD_GET) != 0) + return respond_405(connection); + + *ptr = (void *) 1; + return MHD_YES; + } + + if (url[4] != '/') + return respond_404(connection); + + ret = parse_url_info(url + 5, &info); + if ((ret & URL_INFO_AUTHOR) == 0) + return respond_404(connection); + + if (!tag_exists(info.author)) + return respond_404(connection); + + uint64_t recs = 50; + struct tag *taglist = tag_list(info.author, 0, &recs, -1); + + if (recs == 0) { + response = MHD_create_response_from_data(2, "[]", MHD_NO, MHD_NO); + } else { + response = create_tag_response(taglist, recs); + } + + if (response == NULL) + return respond_JSON_Failure(connection); + + ret = MHD_queue_response(connection, MHD_HTTP_OK, response); + MHD_destroy_response(response); + + return ret; } else if (strncmp(url, "/put", 4) == 0) { + struct put_state *ps = (struct put_state *) *ptr; + char *username; + char password[33]; + + if (*ptr == NULL) { + if (strcmp(method, MHD_HTTP_METHOD_POST) != 0) + return respond_405(connection); + + if (url[4] == '/') + return respond_404(connection); + + *ptr = (void *) 1; + + username = MHD_digest_auth_get_username(connection); + if (username == NULL) + return respond_401(connection, MHD_NO); + auth_get_password(username, password); + + ret = MHD_digest_auth_check(connection, REALM, username, password, 300); + free(username); + + if (ret == MHD_INVALID_NONCE || ret == MHD_NO) + return respond_401(connection, (ret == MHD_INVALID_NONCE) ? MHD_YES : MHD_NO); + + struct put_state *ps = malloc(sizeof(struct put_state)); + ps->data = NULL; + ps->data_size = 0; + ps->pp = MHD_create_post_processor(connection, 16384, &POST_put_iterator, ps); + *ptr = ps; + return MHD_YES; + } + + if (*upload_data_size) { + MHD_post_process(ps->pp, upload_data, *upload_data_size); + *upload_data_size = 0; + return MHD_YES; + } + + if (ps->data == NULL || ps->data_size == 0) + return respond_JSON_Failure(connection); + + username = MHD_digest_auth_get_username(connection); + struct blerg *b = blerg_open(username); + if (b == NULL) + return respond_JSON_Failure(connection); + if (blerg_store(b, ps->data, ps->data_size) == -1) { + blerg_close(b); + return respond_JSON_Failure(connection); + } + blerg_close(b); + + MHD_destroy_post_processor(ps->pp); + free(username); + free(ps->data); + free(ps); + *ptr = NULL; + + return respond_JSON_Success(connection); + } else if (strncmp(url, "/info", 5) == 0) { + if (*ptr == NULL) { + *ptr = (void *) 1; + + if (strcmp(method, MHD_HTTP_METHOD_GET) != 0) + return respond_405(connection); + return MHD_YES; + } + + + if (url[5] != '/') + return respond_404(connection); + + ret = parse_url_info(url + 6, &info); + if ((ret & URL_INFO_AUTHOR) == 0) + return respond_404(connection); + + if (!blerg_exists(info.author)) + return respond_404(connection); + + *ptr == NULL; + + struct blerg *b = blerg_open(info.author); + uint64_t record_count = blerg_get_record_count(b); + blerg_close(b); + + char number[21]; + yajl_gen g = yajl_gen_alloc(&yajl_c, NULL); + yajl_gen_map_open(g); + yajl_gen_string(g, "record_count", 12); + snprintf(number, 21, "%llu", record_count); + yajl_gen_string(g, number, strlen(number)); + yajl_gen_map_close(g); + + const unsigned char *ybuf; + yajl_gen_get_buf(g, &ybuf, &len); + + response = MHD_create_response_from_data(len, (void *)ybuf, MHD_NO, MHD_YES); + ret = MHD_queue_response(connection, MHD_HTTP_OK, response); + MHD_destroy_response(response); + + yajl_gen_free(g); + + return ret; + } else if (strncmp(url, "/create", 8) == 0) { + struct create_state *cs = (struct create_state *) *ptr; + + if (cs == NULL) { + if (strcmp(method, MHD_HTTP_METHOD_POST) != 0) + return respond_405(connection); + + struct create_state *cs = malloc(sizeof(struct create_state)); + cs->username[0] = cs->password[0] = 0; + cs->pp = MHD_create_post_processor(connection, 1024, &POST_create_iterator, cs); + *ptr = cs; + return MHD_YES; + } + + if (*upload_data_size) { + MHD_post_process(cs->pp, upload_data, *upload_data_size); + *upload_data_size = 0; + return MHD_YES; + } + + if (cs->username[0] == 0 || cs->password[0] == 0) + return respond_JSON_Failure(connection); + + if (blerg_exists(cs->username)) + return respond_JSON_Failure(connection); + + struct blerg *b = blerg_open(cs->username); + blerg_close(b); + auth_set_password(cs->username, cs->password); + + MHD_destroy_post_processor(cs->pp); + free(cs); + *ptr = NULL; + + return respond_JSON_Success(connection); } else { return respond_404(connection); }