75 lines
2.4 KiB
Diff
75 lines
2.4 KiB
Diff
---
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ncurses/tinfo/alloc_entry.c | 12 +++++-------
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ncurses/tinfo/read_entry.c | 17 +++++++++++++++--
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2 files changed, 20 insertions(+), 9 deletions(-)
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--- ncurses/tinfo/alloc_entry.c
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+++ ncurses/tinfo/alloc_entry.c 2022-07-15 10:54:20.340284549 +0000
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@@ -52,8 +52,6 @@ MODULE_ID("$Id: alloc_entry.c,v 1.61 201
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#define ABSENT_OFFSET -1
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#define CANCELLED_OFFSET -2
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-#define MAX_STRTAB 4096 /* documented maximum entry size */
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-
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static char *stringbuf; /* buffer for string capabilities */
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static size_t next_free; /* next free character in stringbuf */
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@@ -70,8 +68,8 @@ _nc_init_entry(ENTRY * const tp)
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}
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#endif
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- if (stringbuf == 0)
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- TYPE_MALLOC(char, (size_t) MAX_STRTAB, stringbuf);
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+ if (stringbuf == NULL)
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+ TYPE_MALLOC(char, (size_t) MAX_ENTRY_SIZE, stringbuf);
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next_free = 0;
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@@ -107,11 +105,11 @@ _nc_save_str(const char *const string)
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* Cheat a little by making an empty string point to the end of the
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* previous string.
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*/
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- if (next_free < MAX_STRTAB) {
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+ if (next_free < MAX_ENTRY_SIZE) {
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result = (stringbuf + next_free - 1);
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}
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- } else if (next_free + len < MAX_STRTAB) {
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- _nc_STRCPY(&stringbuf[next_free], string, MAX_STRTAB);
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+ } else if (next_free + len < MAX_ENTRY_SIZE) {
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+ _nc_STRCPY(&stringbuf[next_free], string, MAX_ENTRY_SIZE);
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DEBUG(7, ("Saved string %s", _nc_visbuf(string)));
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DEBUG(7, ("at location %d", (int) next_free));
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next_free += len;
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--- ncurses/tinfo/read_entry.c
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+++ ncurses/tinfo/read_entry.c 2022-04-16 21:00:00.000000000 +0000
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@@ -144,6 +144,7 @@ convert_strings(char *buf, char **String
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{
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int i;
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char *p;
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+ bool corrupt = FALSE;
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for (i = 0; i < count; i++) {
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if (IS_NEG1(buf + 2 * i)) {
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@@ -153,8 +154,20 @@ convert_strings(char *buf, char **String
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} else if (MyNumber(buf + 2 * i) > size) {
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Strings[i] = ABSENT_STRING;
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} else {
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- Strings[i] = (MyNumber(buf + 2 * i) + table);
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- TR(TRACE_DATABASE, ("Strings[%d] = %s", i, _nc_visbuf(Strings[i])));
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+ int nn = MyNumber(buf + 2 * i);
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+ if (nn >= 0 && nn < size) {
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+ Strings[i] = (nn + table);
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+ TR(TRACE_DATABASE, ("Strings[%d] = %s", i,
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+ _nc_visbuf(Strings[i])));
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+ } else {
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+ if (!corrupt) {
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+ corrupt = TRUE;
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+ TR(TRACE_DATABASE,
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+ ("ignore out-of-range index %d to Strings[]", nn));
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+ _nc_warning("corrupt data found in convert_strings");
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+ }
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+ Strings[i] = ABSENT_STRING;
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+ }
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}
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/* make sure all strings are NUL terminated */
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