mirror of
https://github.com/janet-lang/janet
synced 2024-06-22 05:03:16 +00:00
Address some issues found in lgtm
Caught a few potentially issues with overflows, as well as use of unsafe function localtime.
This commit is contained in:
Calvin Rose
parent
8ee54e887f
commit
a18a251d16
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@ -1668,7 +1668,8 @@
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:on-compile-error - callback when compilation fails - default is bad-compile\n\t
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:compile-only - only compile the source, do not execute it - default is false\n\t
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:on-status - callback when a value is evaluated - default is debug/stacktrace\n\t
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:fiber-flags - what flags to wrap the compilation fiber with. Default is :ia."
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:fiber-flags - what flags to wrap the compilation fiber with. Default is :ia.\n\t
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:expander - an optional function that is called on each top level form before being compiled."
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[opts]
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(def {:env env
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@ -1678,7 +1679,8 @@
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:on-parse-error on-parse-error
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:fiber-flags guard
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:compile-only compile-only
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:source where} opts)
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:source where
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:expander expand} opts)
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(default env (fiber/getenv (fiber/current)))
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(default chunks (fn [buf p] (getline "" buf)))
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(default compile-only false)
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@ -1695,6 +1697,7 @@
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# Evaluate 1 source form in a protected manner
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(defn eval1 [source]
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(def source (if expand (expand source) source))
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(var good true)
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(def f
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(fiber/new
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@ -1718,6 +1721,7 @@
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# Loop
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(def buf @"")
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(while going
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(if (env :exit) (break))
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(buffer/clear buf)
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(chunks buf p)
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(var pindex 0)
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@ -1740,6 +1744,13 @@
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env)
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(defn quit
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"Tries to exit from the current repl or context. Does not always exit the application.
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Works by setting the :exit dynamic binding to true."
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[]
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(setdyn :exit true)
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"Bye!")
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(defn eval-string
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"Evaluates a string in the current environment. If more control over the
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environment is needed, use run-context."
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@ -2005,7 +2016,7 @@
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(debug/stacktrace f x)
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(print ```
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entering debugger - Ctrl-D to exit
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entering debugger - (quit) or Ctrl-D to exit
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_fiber is bound to the suspended fiber
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```)
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@ -64,7 +64,7 @@ void janet_array_ensure(JanetArray *array, int32_t capacity, int32_t growth) {
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Janet *newData;
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Janet *old = array->data;
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if (capacity <= array->capacity) return;
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int64_t new_capacity = capacity * growth;
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int64_t new_capacity = ((int64_t) capacity) * growth;
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if (new_capacity > INT32_MAX) new_capacity = INT32_MAX;
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capacity = (int32_t) new_capacity;
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newData = realloc(old, capacity * sizeof(Janet));
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@ -59,7 +59,7 @@ void janet_buffer_ensure(JanetBuffer *buffer, int32_t capacity, int32_t growth)
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uint8_t *new_data;
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uint8_t *old = buffer->data;
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if (capacity <= buffer->capacity) return;
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int64_t big_capacity = capacity * growth;
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int64_t big_capacity = ((int64_t) capacity) * growth;
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capacity = big_capacity > INT32_MAX ? INT32_MAX : (int32_t) big_capacity;
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janet_vm_next_collection += capacity - buffer->capacity;
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new_data = realloc(old, capacity * sizeof(uint8_t));
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@ -477,13 +477,19 @@ static Janet os_date(int32_t argc, Janet *argv) {
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janet_arity(argc, 0, 1);
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(void) argv;
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time_t t;
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struct tm t_infos;
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struct tm *t_info;
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if (argc) {
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t = (time_t) janet_getinteger64(argv, 0);
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} else {
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time(&t);
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}
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t_info = localtime(&t);
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#ifdef JANET_WINDOWS
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localtime_s(&t_infos, &t);
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t_info = &t_infos;
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#else
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t_info = localtime_r(&t, &t_infos);
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#endif
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JanetKV *st = janet_struct_begin(9);
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janet_struct_put(st, janet_ckeywordv("seconds"), janet_wrap_number(t_info->tm_sec));
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janet_struct_put(st, janet_ckeywordv("minutes"), janet_wrap_number(t_info->tm_min));
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@ -30,7 +30,8 @@ void *janet_v_grow(void *v, int32_t increment, int32_t itemsize) {
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int32_t dbl_cur = (NULL != v) ? 2 * janet_v__cap(v) : 0;
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int32_t min_needed = janet_v_count(v) + increment;
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int32_t m = dbl_cur > min_needed ? dbl_cur : min_needed;
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int32_t *p = (int32_t *) janet_srealloc(v ? janet_v__raw(v) : 0, itemsize * m + sizeof(int32_t) * 2);
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size_t newsize = ((size_t) itemsize) * m + sizeof(int32_t) * 2;
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int32_t *p = (int32_t *) janet_srealloc(v ? janet_v__raw(v) : 0, newsize);
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if (!v) p[1] = 0;
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p[0] = m;
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return p + 2;
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@ -892,12 +892,12 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in, JanetFiberStatus status)
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Janet fv = stack[C];
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vm_assert_type(fv, JANET_FIBER);
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JanetFiber *f = janet_unwrap_fiber(fv);
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JanetFiberStatus status = janet_fiber_status(f);
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if (status > JANET_STATUS_USER9) {
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JanetFiberStatus sub_status = janet_fiber_status(f);
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if (sub_status > JANET_STATUS_USER9) {
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vm_throw("cannot propagate from new or alive fiber");
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}
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janet_vm_fiber->child = f;
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vm_return((int) status, stack[B]);
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vm_return((int) sub_status, stack[B]);
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}
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VM_OP(JOP_PUT)
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@ -87,18 +87,18 @@ https://github.com/antirez/linenoise/blob/master/linenoise.c
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/* static state */
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#define JANET_LINE_MAX 1024
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#define JANET_HISTORY_MAX 100
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static int israwmode = 0;
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static const char *prompt = "> ";
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static int plen = 2;
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static char buf[JANET_LINE_MAX];
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static int len = 0;
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static int pos = 0;
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static int cols = 80;
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static char *history[JANET_HISTORY_MAX];
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static int history_count = 0;
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static int historyi = 0;
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static int sigint_flag = 0;
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static struct termios termios_start;
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static int gbl_israwmode = 0;
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static const char *gbl_prompt = "> ";
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static int gbl_plen = 2;
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static char gbl_buf[JANET_LINE_MAX];
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static int gbl_len = 0;
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static int gbl_pos = 0;
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static int gbl_cols = 80;
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static char *gbl_history[JANET_HISTORY_MAX];
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static int gbl_history_count = 0;
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static int gbl_historyi = 0;
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static int gbl_sigint_flag = 0;
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static struct termios gbl_termios_start;
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/* Unsupported terminal list from linenoise */
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static const char *badterms[] = {
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@ -121,8 +121,8 @@ static char *sdup(const char *s) {
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static int rawmode() {
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struct termios t;
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if (!isatty(STDIN_FILENO)) goto fatal;
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if (tcgetattr(STDIN_FILENO, &termios_start) == -1) goto fatal;
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t = termios_start;
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if (tcgetattr(STDIN_FILENO, &gbl_termios_start) == -1) goto fatal;
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t = gbl_termios_start;
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t.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
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t.c_oflag &= ~(OPOST);
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t.c_cflag |= (CS8);
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@ -130,7 +130,7 @@ static int rawmode() {
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t.c_cc[VMIN] = 1;
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t.c_cc[VTIME] = 0;
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &t) < 0) goto fatal;
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israwmode = 1;
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gbl_israwmode = 1;
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return 0;
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fatal:
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errno = ENOTTY;
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@ -139,8 +139,8 @@ fatal:
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/* Disable raw mode */
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static void norawmode() {
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if (israwmode && tcsetattr(STDIN_FILENO, TCSAFLUSH, &termios_start) != -1)
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israwmode = 0;
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if (gbl_israwmode && tcsetattr(STDIN_FILENO, TCSAFLUSH, &gbl_termios_start) != -1)
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gbl_israwmode = 0;
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}
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static int curpos() {
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@ -171,7 +171,9 @@ static int getcols() {
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if (cols > start) {
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char seq[32];
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snprintf(seq, 32, "\x1b[%dD", cols - start);
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if (write(STDOUT_FILENO, seq, strlen(seq)) == -1) {}
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if (write(STDOUT_FILENO, seq, strlen(seq)) == -1) {
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exit(1);
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}
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}
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return cols;
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} else {
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@ -182,7 +184,9 @@ failed:
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}
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static void clear() {
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if (write(STDOUT_FILENO, "\x1b[H\x1b[2J", 7) <= 0) {}
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if (write(STDOUT_FILENO, "\x1b[H\x1b[2J", 7) <= 0) {
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exit(1);
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}
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}
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static void refresh() {
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@ -190,38 +194,40 @@ static void refresh() {
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JanetBuffer b;
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/* Keep cursor position on screen */
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char *_buf = buf;
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int _len = len;
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int _pos = pos;
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while ((plen + _pos) >= cols) {
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char *_buf = gbl_buf;
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int _len = gbl_len;
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int _pos = gbl_pos;
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while ((gbl_plen + _pos) >= gbl_cols) {
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_buf++;
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_len--;
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_pos--;
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}
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while ((plen + _len) > cols) {
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while ((gbl_plen + _len) > gbl_cols) {
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_len--;
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}
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janet_buffer_init(&b, 0);
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/* Cursor to left edge, prompt and buffer */
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/* Cursor to left edge, gbl_prompt and buffer */
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janet_buffer_push_u8(&b, '\r');
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janet_buffer_push_cstring(&b, prompt);
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janet_buffer_push_cstring(&b, gbl_prompt);
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janet_buffer_push_bytes(&b, (uint8_t *) _buf, _len);
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/* Erase to right */
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janet_buffer_push_cstring(&b, "\x1b[0K");
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/* Move cursor to original position. */
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snprintf(seq, 64, "\r\x1b[%dC", (int)(_pos + plen));
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snprintf(seq, 64, "\r\x1b[%dC", (int)(_pos + gbl_plen));
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janet_buffer_push_cstring(&b, seq);
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if (write(STDOUT_FILENO, b.data, b.count) == -1) {}
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if (write(STDOUT_FILENO, b.data, b.count) == -1) {
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exit(1);
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}
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janet_buffer_deinit(&b);
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}
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static int insert(char c) {
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if (len < JANET_LINE_MAX - 1) {
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if (len == pos) {
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buf[pos++] = c;
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buf[++len] = '\0';
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if (plen + len < cols) {
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if (gbl_len < JANET_LINE_MAX - 1) {
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if (gbl_len == gbl_pos) {
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gbl_buf[gbl_pos++] = c;
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gbl_buf[++gbl_len] = '\0';
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if (gbl_plen + gbl_len < gbl_cols) {
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/* Avoid a full update of the line in the
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* trivial case. */
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if (write(STDOUT_FILENO, &c, 1) == -1) return -1;
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@ -229,9 +235,9 @@ static int insert(char c) {
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refresh();
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}
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} else {
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memmove(buf + pos + 1, buf + pos, len - pos);
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buf[pos++] = c;
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buf[++len] = '\0';
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memmove(gbl_buf + gbl_pos + 1, gbl_buf + gbl_pos, gbl_len - gbl_pos);
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gbl_buf[gbl_pos++] = c;
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gbl_buf[++gbl_len] = '\0';
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refresh();
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}
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}
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@ -239,21 +245,21 @@ static int insert(char c) {
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}
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static void historymove(int delta) {
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if (history_count > 1) {
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free(history[historyi]);
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history[historyi] = sdup(buf);
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if (gbl_history_count > 1) {
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free(gbl_history[gbl_historyi]);
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gbl_history[gbl_historyi] = sdup(gbl_buf);
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historyi += delta;
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if (historyi < 0) {
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historyi = 0;
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gbl_historyi += delta;
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if (gbl_historyi < 0) {
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gbl_historyi = 0;
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return;
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} else if (historyi >= history_count) {
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historyi = history_count - 1;
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} else if (gbl_historyi >= gbl_history_count) {
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gbl_historyi = gbl_history_count - 1;
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return;
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}
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strncpy(buf, history[historyi], JANET_LINE_MAX - 1);
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pos = len = strlen(buf);
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buf[len] = '\0';
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strncpy(gbl_buf, gbl_history[gbl_historyi], JANET_LINE_MAX - 1);
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gbl_pos = gbl_len = strlen(gbl_buf);
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gbl_buf[gbl_len] = '\0';
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refresh();
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}
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@ -261,62 +267,62 @@ static void historymove(int delta) {
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static void addhistory() {
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int i, len;
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char *newline = sdup(buf);
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char *newline = sdup(gbl_buf);
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if (!newline) return;
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len = history_count;
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len = gbl_history_count;
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if (len < JANET_HISTORY_MAX) {
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history[history_count++] = newline;
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gbl_history[gbl_history_count++] = newline;
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len++;
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} else {
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free(history[JANET_HISTORY_MAX - 1]);
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free(gbl_history[JANET_HISTORY_MAX - 1]);
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}
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for (i = len - 1; i > 0; i--) {
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history[i] = history[i - 1];
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gbl_history[i] = gbl_history[i - 1];
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}
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history[0] = newline;
|
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gbl_history[0] = newline;
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}
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static void replacehistory() {
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char *newline = sdup(buf);
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char *newline = sdup(gbl_buf);
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if (!newline) return;
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free(history[0]);
|
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history[0] = newline;
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free(gbl_history[0]);
|
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gbl_history[0] = newline;
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}
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static void kleft() {
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if (pos > 0) {
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pos--;
|
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if (gbl_pos > 0) {
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gbl_pos--;
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refresh();
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}
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}
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static void kright() {
|
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if (pos != len) {
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pos++;
|
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if (gbl_pos != gbl_len) {
|
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gbl_pos++;
|
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refresh();
|
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}
|
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}
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|
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static void kbackspace() {
|
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if (pos > 0) {
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memmove(buf + pos - 1, buf + pos, len - pos);
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pos--;
|
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buf[--len] = '\0';
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if (gbl_pos > 0) {
|
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memmove(gbl_buf + gbl_pos - 1, gbl_buf + gbl_pos, gbl_len - gbl_pos);
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gbl_pos--;
|
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gbl_buf[--gbl_len] = '\0';
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refresh();
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}
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}
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static int line() {
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cols = getcols();
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plen = 0;
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len = 0;
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pos = 0;
|
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while (prompt[plen]) plen++;
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buf[0] = '\0';
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gbl_cols = getcols();
|
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gbl_plen = 0;
|
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gbl_len = 0;
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gbl_pos = 0;
|
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while (gbl_prompt[gbl_plen]) gbl_plen++;
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gbl_buf[0] = '\0';
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|
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addhistory();
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|
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if (write(STDOUT_FILENO, prompt, plen) == -1) return -1;
|
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if (write(STDOUT_FILENO, gbl_prompt, gbl_plen) == -1) return -1;
|
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for (;;) {
|
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char c;
|
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int nread;
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@ -337,7 +343,7 @@ static int line() {
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return 0;
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case 3: /* ctrl-c */
|
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errno = EAGAIN;
|
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sigint_flag = 1;
|
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gbl_sigint_flag = 1;
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return -1;
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case 127: /* backspace */
|
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case 8: /* ctrl-h */
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@ -352,8 +358,8 @@ static int line() {
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kright();
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break;
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case 21:
|
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buf[0] = '\0';
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pos = len = 0;
|
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gbl_buf[0] = '\0';
|
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gbl_pos = gbl_len = 0;
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refresh();
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break;
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case 26: /* ctrl-z */
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|
|
@ -399,11 +405,11 @@ static int line() {
|
|||
kleft();
|
||||
break;
|
||||
case 'H':
|
||||
pos = 0;
|
||||
gbl_pos = 0;
|
||||
refresh();
|
||||
break;
|
||||
case 'F':
|
||||
pos = len;
|
||||
gbl_pos = gbl_len;
|
||||
refresh();
|
||||
break;
|
||||
}
|
||||
|
|
@ -413,11 +419,11 @@ static int line() {
|
|||
default:
|
||||
break;
|
||||
case 'H':
|
||||
pos = 0;
|
||||
gbl_pos = 0;
|
||||
refresh();
|
||||
break;
|
||||
case 'F':
|
||||
pos = len;
|
||||
gbl_pos = gbl_len;
|
||||
refresh();
|
||||
break;
|
||||
}
|
||||
|
|
@ -435,9 +441,9 @@ void janet_line_init() {
|
|||
void janet_line_deinit() {
|
||||
int i;
|
||||
norawmode();
|
||||
for (i = 0; i < history_count; i++)
|
||||
free(history[i]);
|
||||
historyi = 0;
|
||||
for (i = 0; i < gbl_history_count; i++)
|
||||
free(gbl_history[i]);
|
||||
gbl_historyi = 0;
|
||||
}
|
||||
|
||||
static int checktermsupport() {
|
||||
|
|
@ -450,9 +456,9 @@ static int checktermsupport() {
|
|||
}
|
||||
|
||||
void janet_line_get(const char *p, JanetBuffer *buffer) {
|
||||
prompt = p;
|
||||
gbl_prompt = p;
|
||||
buffer->count = 0;
|
||||
historyi = 0;
|
||||
gbl_historyi = 0;
|
||||
FILE *out = janet_dynfile("out", stdout);
|
||||
if (!isatty(STDIN_FILENO) || !checktermsupport()) {
|
||||
simpleline(buffer);
|
||||
|
|
@ -464,7 +470,7 @@ void janet_line_get(const char *p, JanetBuffer *buffer) {
|
|||
}
|
||||
if (line()) {
|
||||
norawmode();
|
||||
if (sigint_flag) {
|
||||
if (gbl_sigint_flag) {
|
||||
raise(SIGINT);
|
||||
} else {
|
||||
fputc('\n', out);
|
||||
|
|
@ -473,10 +479,10 @@ void janet_line_get(const char *p, JanetBuffer *buffer) {
|
|||
}
|
||||
norawmode();
|
||||
fputc('\n', out);
|
||||
janet_buffer_ensure(buffer, len + 1, 2);
|
||||
memcpy(buffer->data, buf, len);
|
||||
buffer->data[len] = '\n';
|
||||
buffer->count = len + 1;
|
||||
janet_buffer_ensure(buffer, gbl_len + 1, 2);
|
||||
memcpy(buffer->data, gbl_buf, gbl_len);
|
||||
buffer->data[gbl_len] = '\n';
|
||||
buffer->count = gbl_len + 1;
|
||||
replacehistory();
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user