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Change sci_get_line to return a NULL terminated string.

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Fix memory leak and possible invalid read in sci_cb_auto_latex().


git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@861 ea778897-0a13-0410-b9d1-a72fbfd435f5
This commit is contained in:
Nick Treleaven 2006-10-02 15:22:29 +00:00
parent 762f4b5c91
commit 464e9b7d0b
6 changed files with 29 additions and 34 deletions
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4
ChangeLog
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@ -6,6 +6,10 @@
src/makefile.win32, src/Makefile.am, po/POTFILES.in:
Move global tags code to symbols.c.
Added symbols_global_tags_loaded(), symbols_get_global_keywords().
* src/callbacks.c, src/sci_cb.c, src/sciwrappers.c, src/sciwrappers.h,
src/document.c:
Change sci_get_line to return a NULL terminated string.
Fix memory leak and possible invalid read in sci_cb_auto_latex().
2006-10-01 Enrico Tröger <enrico.troeger@uvena.de>

3
src/callbacks.c
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@ -1296,8 +1296,7 @@ on_find_usage1_activate (GtkMenuItem *menuitem,
if (pos == -1) break;
line = sci_get_line_from_position(doc_list[i].sci, pos);
buffer = g_malloc0(sci_get_line_length(doc_list[i].sci, line) + 1);
sci_get_line(doc_list[i].sci, line, buffer);
buffer = sci_get_line(doc_list[i].sci, line);
if (doc_list[i].file_name == NULL)
short_file_name = g_strdup(GEANY_STRING_UNTITLED);

7
src/document.c
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@ -1335,12 +1335,9 @@ void document_set_indicator(gint idx, gint line)
sci_get_line_length(doc_list[idx].sci, line) == utils_get_eol_char_len(idx))
return;
len = end - start;
linebuf = g_malloc(len);
// don't set the indicator on whitespace
sci_get_line(doc_list[idx].sci, line, linebuf);
if (linebuf == NULL) return;
len = end - start;
linebuf = sci_get_line(doc_list[idx].sci, line);
while (isspace(linebuf[i])) i++;
while (isspace(linebuf[len-1])) len--;

36
src/sci_cb.c
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@ -330,9 +330,7 @@ void sci_cb_get_indent(ScintillaObject *sci, gint pos, gboolean use_this_line)
if (! use_this_line) prev_line--;
len = sci_get_line_length(sci, prev_line);
linebuf = g_malloc(len + 1);
sci_get_line(sci, prev_line, linebuf);
linebuf[len] = '\0';
linebuf = sci_get_line(sci, prev_line);
for (i = 0; i < len; i++)
{
@ -438,8 +436,7 @@ void sci_cb_close_block(gint idx, gint pos)
utils_get_eol_char_len(document_find_by_sci(sci));
// check that the line is empty, to not kill text in the line
line_buf = g_malloc(line_len + 1);
sci_get_line(sci, line, line_buf);
line_buf = sci_get_line(sci, line);
line_buf[line_len - eol_char_len] = '\0';
while (x < (line_len - eol_char_len))
{
@ -469,11 +466,10 @@ void sci_cb_find_current_word(ScintillaObject *sci, gint pos, gchar *word, size_
gint line_start = sci_get_position_from_line(sci, line);
gint startword = pos - line_start;
gint endword = pos - line_start;
gchar *chunk = g_malloc(sci_get_line_length(sci, line) + 1);
gchar *chunk;
word[0] = '\0';
sci_get_line(sci, line, chunk);
chunk[sci_get_line_length(sci, line)] = '\0';
chunk = sci_get_line(sci, line);
while (startword > 0 && strchr(GEANY_WORDCHARS, chunk[startword - 1]))
startword--;
@ -664,8 +660,7 @@ gboolean sci_cb_start_auto_complete(gint idx, gint pos, gboolean force)
else if (lexer == SCLEX_RUBY && style == SCE_MAKE_COMMENT) return FALSE;
linebuf = g_malloc(line_len + 1);
sci_get_line(sci, line, linebuf);
linebuf = sci_get_line(sci, line);
// find the start of the current word
while ((startword > 0) && (strchr(GEANY_WORDCHARS, linebuf[startword - 1])))
@ -706,8 +701,7 @@ void sci_cb_auto_latex(gint idx, gint pos)
gint i, start;
// get the line
buf = g_malloc0(line_len + 1);
sci_get_line(sci, line, buf);
buf = sci_get_line(sci, line);
// get to the first non-blank char (some kind of ltrim())
start = 0;
@ -722,7 +716,7 @@ void sci_cb_auto_latex(gint idx, gint pos)
// take also "\begingroup" (or whatever there can be) and append "\endgroup" and so on.
i = start + 6;
while (buf[i] != '{' && j < (sizeof(full_cmd) - 1))
while (i < line_len && buf[i] != '{' && j < (sizeof(full_cmd) - 1))
{ // copy all between "\begin" and "{" to full_cmd
full_cmd[j] = buf[i];
i++;
@ -757,13 +751,11 @@ void sci_cb_auto_latex(gint idx, gint pos)
SSM(sci, SCI_INSERTTEXT, pos, (sptr_t) construct);
sci_goto_pos(sci, pos + 1, TRUE);
g_free(construct);
g_free(buf);
g_free(eol);
}
else
{ // later there could be some else ifs for other keywords
return;
}
// later there could be some else ifs for other keywords
g_free(buf);
}
}
@ -1107,9 +1099,7 @@ static void real_uncomment_multiline(gint idx)
// check whether the line is empty and can be deleted
line = sci_get_line_from_position(doc_list[idx].sci, pos);
len = sci_get_line_length(doc_list[idx].sci, line);
linebuf = g_malloc(len + 1);
sci_get_line(doc_list[idx].sci, line, linebuf);
linebuf[len] = '\0';
linebuf = sci_get_line(doc_list[idx].sci, line);
x = 0;
while (linebuf[x] != '\0' && isspace(linebuf[x])) x++;
if (x == len) SSM(doc_list[idx].sci, SCI_LINEDELETE, 0, 0);
@ -1122,9 +1112,7 @@ static void real_uncomment_multiline(gint idx)
// check whether the line is empty and can be deleted
line = sci_get_line_from_position(doc_list[idx].sci, pos);
len = sci_get_line_length(doc_list[idx].sci, line);
linebuf = g_malloc(len + 1);
sci_get_line(doc_list[idx].sci, line, linebuf);
linebuf[len] = '\0';
linebuf = sci_get_line(doc_list[idx].sci, line);
x = 0;
while (linebuf[x] != '\0' && isspace(linebuf[x])) x++;
if (x == len) SSM(doc_list[idx].sci, SCI_LINEDELETE, 0, 0);

11
src/sciwrappers.c
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@ -469,11 +469,18 @@ gint sci_get_line_length(ScintillaObject* sci,gint line)
}
void sci_get_line(ScintillaObject* sci, gint line, gchar* text)
// Returns: a NULL-terminated copy of the line text
gchar *sci_get_line(ScintillaObject* sci, gint line_num)
{
SSM(sci,SCI_GETLINE, line, (sptr_t) text);
gint len = sci_get_line_length(sci, line_num);
gchar *linebuf = g_malloc(len + 1);
SSM(sci, SCI_GETLINE, line_num, (sptr_t) linebuf);
linebuf[len] = '\0';
return linebuf;
}
// the last char will be null terminated
void sci_get_text(ScintillaObject* sci, gint len, gchar* text)
{

2
src/sciwrappers.h
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@ -81,7 +81,7 @@ gint sci_get_length (ScintillaObject* sci);
void sci_get_text (ScintillaObject* sci,gint len,gchar* text);
void sci_get_selected_text (ScintillaObject* sci, gchar* text);
gint sci_get_selected_text_length(ScintillaObject* sci);
void sci_get_line (ScintillaObject* sci, gint line, gchar* text);
gchar * sci_get_line (ScintillaObject* sci, gint line_num);
gint sci_get_line_length (ScintillaObject* sci, gint line);
gint sci_get_line_count ( ScintillaObject* sci );
void sci_get_xy_from_position (ScintillaObject* sci,gint pos, gint* x, gint* y);