diff options
Diffstat (limited to 'tests/clar/sandbox.h')
-rw-r--r-- | tests/clar/sandbox.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/tests/clar/sandbox.h b/tests/clar/sandbox.h new file mode 100644 index 000000000..ee7564148 --- /dev/null +++ b/tests/clar/sandbox.h @@ -0,0 +1,129 @@ +static char _clar_path[4096]; + +static int +is_valid_tmp_path(const char *path) +{ + STAT_T st; + + if (stat(path, &st) != 0) + return 0; + + if (!S_ISDIR(st.st_mode)) + return 0; + + return (access(path, W_OK) == 0); +} + +static int +find_tmp_path(char *buffer, size_t length) +{ +#ifndef _WIN32 + static const size_t var_count = 5; + static const char *env_vars[] = { + "CLAR_TMP", "TMPDIR", "TMP", "TEMP", "USERPROFILE" + }; + + size_t i; + + for (i = 0; i < var_count; ++i) { + const char *env = getenv(env_vars[i]); + if (!env) + continue; + + if (is_valid_tmp_path(env)) { + strncpy(buffer, env, length); + return 0; + } + } + + /* If the environment doesn't say anything, try to use /tmp */ + if (is_valid_tmp_path("/tmp")) { + strncpy(buffer, "/tmp", length); + return 0; + } + +#else + DWORD env_len = GetEnvironmentVariable("CLAR_TMP", buffer, (DWORD)length); + if (env_len > 0 && env_len < (DWORD)length) + return 0; + + if (GetTempPath((DWORD)length, buffer)) + return 0; +#endif + + /* This system doesn't like us, try to use the current directory */ + if (is_valid_tmp_path(".")) { + strncpy(buffer, ".", length); + return 0; + } + + return -1; +} + +static void clar_unsandbox(void) +{ + if (_clar_path[0] == '\0') + return; + + chdir(".."); + + fs_rm(_clar_path); +} + +static int build_sandbox_path(void) +{ + const char path_tail[] = "clar_tmp_XXXXXX"; + size_t len; + + if (find_tmp_path(_clar_path, sizeof(_clar_path)) < 0) + return -1; + + len = strlen(_clar_path); + +#ifdef _WIN32 + { /* normalize path to POSIX forward slashes */ + size_t i; + for (i = 0; i < len; ++i) { + if (_clar_path[i] == '\\') + _clar_path[i] = '/'; + } + } +#endif + + if (_clar_path[len - 1] != '/') { + _clar_path[len++] = '/'; + } + + strncpy(_clar_path + len, path_tail, sizeof(_clar_path) - len); + +#if defined(__MINGW32__) + if (_mktemp(_clar_path) == NULL) + return -1; + + if (mkdir(_clar_path, 0700) != 0) + return -1; +#elif defined(_WIN32) + if (_mktemp_s(_clar_path, sizeof(_clar_path)) != 0) + return -1; + + if (mkdir(_clar_path, 0700) != 0) + return -1; +#else + if (mkdtemp(_clar_path) == NULL) + return -1; +#endif + + return 0; +} + +static int clar_sandbox(void) +{ + if (_clar_path[0] == '\0' && build_sandbox_path() < 0) + return -1; + + if (chdir(_clar_path) != 0) + return -1; + + return 0; +} + |