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config: use snprintf instead of sprintf

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Due to the preconditions, there should never be an error, but it pays
to be paranoid.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
This commit is contained in:
Carlos Martín Nieto 2011-04-06 16:31:06 +02:00
parent 956ad0ed6f
commit 0d280ea457
1 changed files with 11 additions and 2 deletions
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13
src/config.c
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@ -648,7 +648,7 @@ static char *build_varname(const char *section, const char *name)
static int parse_section_header_ext(const char *line, const char *base_name, char **section_name)
{
int buf_len, total_len, pos, rpos;
int c;
int c, ret;
char *subsection, *first_quote, *last_quote;
int error = GIT_SUCCESS;
int quote_marks;
@ -713,7 +713,16 @@ static int parse_section_header_ext(const char *line, const char *base_name, cha
goto out;
}
sprintf(*section_name, "%s %s", base_name, subsection);
ret = snprintf(*section_name, total_len, "%s %s", base_name, subsection);
if (ret >= total_len) {
/* If this fails, we've checked the length wrong */
error = GIT_ERROR;
goto out;
} else if (ret < 0) {
error = GIT_EOSERR;
goto out;
}
git__strntolower(*section_name, strchr(*section_name, ' ') - *section_name);
out: