126 lines
2.1 KiB
C
126 lines
2.1 KiB
C
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#include <unistd.h>
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#include <apr_errno.h>
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#include <apr_file_io.h>
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#include "db.h"
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#include "bstrlib.h"
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#include "dbg.h"
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static FILE *DB_open(const char *path, const char *mode)
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{
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return fopen(path, mode);
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}
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static void DB_close(FILE *db)
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{
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fclose(db);
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}
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static bstring DB_load()
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{
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FILE *db = NULL;
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bstring data = NULL;
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db = DB_open(DB_FILE, "r");
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check(db, "Failed to open database: %s", DB_FILE);
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data = bread((bNread)fread, db);
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check(data, "Failed to read from db file: %s", DB_FILE);
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DB_close(db);
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return data;
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error:
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if(db) DB_close(db);
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if(data) bdestroy(data);
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return NULL;
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}
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int DB_update(const char *url)
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{
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if(DB_find(url)) {
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log_info("Already recorded as installed: %s", url);
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}
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FILE *db = DB_open(DB_FILE, "a+");
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check(db, "Failed to open DB file: %s", DB_FILE);
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bstring line = bfromcstr(url);
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bconchar(line, '\n');
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int rc = fwrite(line->data, blength(line), 1, db);
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check(rc == 1, "Failed to append to the db.");
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return 0;
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error:
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if(db) DB_close(db);
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return -1;
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}
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int DB_find(const char *url)
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{
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bstring data = NULL;
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bstring line = bfromcstr(url);
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int res = -1;
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data = DB_load();
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check(data, "Failed to load: %s", DB_FILE);
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if(binstr(data, 0, line) == BSTR_ERR) {
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res = 0;
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} else {
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res = 1;
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}
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error: // fallthrough
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if(data) bdestroy(data);
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if(line) bdestroy(line);
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return res;
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}
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int DB_init()
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{
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apr_pool_t *p = NULL;
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apr_pool_initialize();
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apr_pool_create(&p, NULL);
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if(access(DB_DIR, W_OK | X_OK) == -1) {
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apr_status_t rc = apr_dir_make_recursive(DB_DIR,
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APR_UREAD | APR_UWRITE | APR_UEXECUTE |
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APR_GREAD | APR_GWRITE | APR_GEXECUTE, p);
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check(rc == APR_SUCCESS, "Failed to make database dir: %s", DB_DIR);
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}
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if(access(DB_FILE, W_OK) == -1) {
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FILE *db = DB_open(DB_FILE, "w");
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check(db, "Cannot open database: %s", DB_FILE);
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DB_close(db);
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}
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apr_pool_destroy(p);
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return 0;
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error:
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apr_pool_destroy(p);
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return -1;
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}
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int DB_list()
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{
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bstring data = DB_load();
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check(data, "Failed to read load: %s", DB_FILE);
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printf("%s", bdata(data));
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bdestroy(data);
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return 0;
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error:
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return -1;
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}
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