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gitconfig: fix read/write out of bound
On Tue, Feb 21, 2023 at 09:20:33AM +0100, Omar Polo wrote: > James Cook <falsifian@falsifian.org> writes: > > got still emits a "syntax error" warning if my ~/.gitconfig has a > > comment line with whitespace before the initial #, but it seems to be > > harmless. Example .gitconfig triggering the error message: > > > > [user] > > #comment > > name = James Cook > > email = falsifian@falsifian.org > > This adjust the parser to look for comments after trimming the lines, > which makes such "indented" comments work. It also adds a test case > for it. > > There's a separate, but small, change that I'm bundling here and it's > to log gitconfig.c error to stderr instead that on stdout. > > ok? Yep, ok. > diff /home/op/w/gotd > commit - 45e6b2f427b11e0fc760c10ee96eae3a6a5f06e7 > path + /home/op/w/gotd > blob - 836551957b7ea94b0769a73ed8ac1f103def1278 > file + lib/gitconfig.c > --- lib/gitconfig.c > +++ lib/gitconfig.c > @@ -55,8 +55,8 @@ > #define LOG_DBG(x) > #endif > > -#define log_print printf > -#define log_error printf > +#define log_print(...) fprintf(stderr, __VA_ARGS__) > +#define log_error(...) fprintf(stderr, __VA_ARGS__) > > #ifdef GITCONFIG_DEBUG > static void > @@ -222,10 +222,6 @@ conf_parse_line(char **section, struct got_gitconfig * > size_t i; > int j; > > - /* Lines starting with '#' or ';' are comments. */ > - if (*line == '#' || *line == ';') > - return NULL; > - > /* '[section]' parsing... */ > if (*line == '[') { > for (i = 1; i < sz; i++) > @@ -248,6 +244,10 @@ conf_parse_line(char **section, struct got_gitconfig * > sz--; > } > > + /* Lines starting with '#' or ';' are comments. */ > + if (*line == '#' || *line == ';') > + return NULL; > + > /* Deal with assignments. */ > for (i = 0; i < sz; i++) > if (line[i] == '=') { > blob - 62bcb9f3f02f060aa7096a6fd0d8eb9f6ded5382 > file + regress/cmdline/commit.sh > --- regress/cmdline/commit.sh > +++ regress/cmdline/commit.sh > @@ -982,6 +982,9 @@ test_commit_gitconfig_author() { > > # retry with spaces in the git config > ed -s "$testroot/repo/.git/config" <<EOF > +/^\[user/ a > + # it's me! > +. > ,s/ / /g > wq > EOF > @@ -989,13 +992,24 @@ EOF > > # unset in a subshell to avoid affecting our environment > (unset GOT_IGNORE_GITCONFIG && cd "$testroot/wt" && \ > - got commit -m 'test gitconfig author again' >/dev/null) > + got commit -m 'test gitconfig author again' \ > + >/dev/null 2>$testroot/stderr) > ret=$? > if [ $ret -ne 0 ]; then > test_done "$testroot" "$ret" > return 1 > fi > > + # shouldn't have triggered any parsing error > + echo -n > $testroot/stderr.expected > + cmp -s $testroot/stderr.expected $testroot/stderr > + ret=$? > + if [ $ret -ne 0 ]; then > + diff -u $testroot/stderr.expected $testroot/stderr > + test_done "$testroot" "$ret" > + return 1 > + fi > + > (cd "$testroot/repo" && got log -l1 | grep ^from: > $testroot/stdout) > ret=$? > if [ $ret -ne 0 ]; then > >
gitconfig: fix read/write out of bound