mirror of https://git.lain.church/x3/caniadd.git
209 lines
5.8 KiB
C
209 lines
5.8 KiB
C
#include <stddef.h>
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#include <sqlite3.h>
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#include "cache.h"
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#include "config.h"
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#include "uio.h"
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#include "ed2k.h"
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#include "util.h"
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#define sqlite_bind_goto(smt, name, type, ...) { \
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int sb_idx = sqlite3_bind_parameter_index(smt, name); \
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if (sb_idx == 0) { \
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uio_error("Cannot get named parameter for var: %s", name); \
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err = ERR_CACHE_SQLITE; \
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goto fail; \
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} \
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int sb_sret = sqlite3_bind_##type(smt, sb_idx, __VA_ARGS__); \
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if (sb_sret != SQLITE_OK) {\
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uio_error("Cannot bind to statement: %s", sqlite3_errmsg(cache_db));\
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err = ERR_CACHE_SQLITE;\
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goto fail;\
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} \
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}
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static sqlite3 *cache_db = NULL;
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static const char sql_create_table[] = "CREATE TABLE IF NOT EXISTS mylist ("
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"lid INTEGER NOT NULL PRIMARY KEY,"
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"fname TEXT NOT NULL,"
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"fsize INTEGER NOT NULL,"
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"ed2k TEXT NOT NULL,"
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"UNIQUE (fname, fsize) )";
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static const char sql_mylist_add[] = "INSERT INTO mylist "
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"(lid, fname, fsize, ed2k) VALUES "
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//"(?, ?, ?, ?)";
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"(:lid, :fname, :fsize, :ed2k)";
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static const char sql_mylist_get[] = "SELECT * FROM mylist WHERE "
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"fsize=:fsize AND fname=:fname";
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#if 0
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static const char sql_has_tables[] = "SELECT 1 FROM sqlite_master "
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"WHERE type='table' AND tbl_name='mylist'";
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/* Return 0 if false, 1 if true, and -1 if error */
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static int cache_has_tables()
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{
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sqlite3_smt smt;
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int sret;
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sret = sqlite3_prepare_v2(cache_db, sql_has_tables,
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sizeof(sql_has_tables), &smt, NULL);
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if (sret != SQLITE_OK) {
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uio_error("Cannot prepare statement: %s", sqlite3_errmsg(cache_db));
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return -1;
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}
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sqlite3_step(&smt);
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// ehh fuck this, lets just use if not exists
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sret = sqlite3_finalize(&smt);
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if (sret != SQLITE_OK)
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uio_debug("sql3_finalize failed: %s", sqlite3_errmsg(cache_db));
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}
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#endif
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/*
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* Create database table(s)
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*/
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static enum error cache_init_table()
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{
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sqlite3_stmt *smt;
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int sret;
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enum error err = NOERR;
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sret = sqlite3_prepare_v2(cache_db, sql_create_table,
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sizeof(sql_create_table), &smt, NULL);
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if (sret != SQLITE_OK) {
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uio_error("Cannot prepare statement: %s", sqlite3_errmsg(cache_db));
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return ERR_CACHE_SQLITE;
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}
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sret = sqlite3_step(smt);
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if (sret != SQLITE_DONE) {
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uio_error("sql3_step is not done: %s", sqlite3_errmsg(cache_db));
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err = ERR_CACHE_SQLITE;
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}
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sret = sqlite3_finalize(smt);
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if (sret != SQLITE_OK)
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uio_debug("sql3_finalize failed: %s", sqlite3_errmsg(cache_db));
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return err;
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}
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enum error cache_init()
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{
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char **db_path;
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enum error err;
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int sret;
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err = config_get("cachedb", (void**)&db_path);
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if (err != NOERR) {
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uio_error("Cannot get cache db path from args");
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return err;
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}
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uio_debug("Opening cache db: '%s'", *db_path);
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sret = sqlite3_open(*db_path, &cache_db);
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if (sret != SQLITE_OK) {
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uio_error("Cannot create sqlite3 database: %s", sqlite3_errstr(sret));
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sqlite3_close(cache_db); /* Even if arg is NULL, it's A'OK */
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return ERR_CACHE_SQLITE;
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}
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sqlite3_extended_result_codes(cache_db, 1);
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err = cache_init_table();
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if (err != NOERR)
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goto fail;
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return NOERR;
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fail:
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cache_free();
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return err;
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}
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void cache_free()
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{
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sqlite3_close(cache_db);
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uio_debug("Closed cache db");
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}
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enum error cache_add(uint64_t lid, const char *fname,
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uint64_t fsize, const uint8_t *ed2k)
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{
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char ed2k_str[ED2K_HASH_SIZE * 2 + 1];
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sqlite3_stmt *smt;
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int sret;
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enum error err = NOERR;
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sret = sqlite3_prepare_v2(cache_db, sql_mylist_add,
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sizeof(sql_mylist_add), &smt, NULL);
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if (sret != SQLITE_OK) {
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uio_error("Cannot prepare statement: %s", sqlite3_errmsg(cache_db));
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return ERR_CACHE_SQLITE;
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}
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util_byte2hex(ed2k, ED2K_HASH_SIZE, false, ed2k_str);
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sqlite_bind_goto(smt, ":lid", int64, lid);
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sqlite_bind_goto(smt, ":fname", text, fname, -1, SQLITE_STATIC);
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sqlite_bind_goto(smt, ":fsize", int64, fsize);
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sqlite_bind_goto(smt, ":ed2k", text, ed2k_str, -1, SQLITE_STATIC);
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sret = sqlite3_step(smt);
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if (sret != SQLITE_DONE) {
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if (sret == SQLITE_CONSTRAINT_PRIMARYKEY) {
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uio_debug("Attempted to add duplicate entry!");
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err = ERR_CACHE_EXISTS;
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} else if (sret == SQLITE_CONSTRAINT_UNIQUE) {
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uio_debug("An entry with the same name and size already exists!");
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err = ERR_CACHE_NON_UNIQUE;
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} else {
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uio_error("error after sql3_step: %s %d", sqlite3_errmsg(cache_db), sret);
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err = ERR_CACHE_SQLITE;
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}
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}
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fail:
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sqlite3_finalize(smt);
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return err;
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}
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enum error cache_get(const char *fname, uint64_t fsize,
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struct cache_entry *out_ce)
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{
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sqlite3_stmt *smt;
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int sret;
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enum error err = NOERR;
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sret = sqlite3_prepare_v2(cache_db, sql_mylist_get,
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sizeof(sql_mylist_get), &smt, NULL);
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if (sret != SQLITE_OK) {
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uio_error("Cannot prepare statement: %s", sqlite3_errmsg(cache_db));
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return ERR_CACHE_SQLITE;
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}
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sqlite_bind_goto(smt, ":fname", text, fname, -1, SQLITE_STATIC);
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sqlite_bind_goto(smt, ":fsize", int64, fsize);
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sret = sqlite3_step(smt);
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if (sret == SQLITE_DONE) {
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uio_debug("Cache entry with size (%lu) and name (%s) not found", fsize, fname);
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err = ERR_CACHE_NO_EXISTS;
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} else if (sret == SQLITE_ROW) {
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uio_debug("Found Cache entry with size (%lu) and name (%s)", fsize, fname);
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} else {
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uio_error("sqlite_step failed: %s", sqlite3_errmsg(cache_db));
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err = ERR_CACHE_SQLITE;
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}
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fail:
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sqlite3_finalize(smt);
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return err;
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}
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