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ui-snapshot: do not access $HOME

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It's a bit tedious to have to do this here too. If we encounter other
issues with $HOME down the line, I'll look into adding some nice utility
functions to handle this, or perhaps giving up on the hope that we could
keep $HOME defined for scripts.

This commit additionally adds a test case, should the issue surface
again.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2013-04-30 12:27:41 +02:00
parent 8d07ad3388
commit 8bf4a0465e
2 changed files with 10 additions and 0 deletions
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1
tests/t0109-gitconfig.sh
View File

@ -37,5 +37,6 @@ test_no_home_access_success foo/tree/file-1
test_no_home_access_success foo/commit
test_no_home_access_success foo/diff
test_no_home_access_success foo/patch
test_no_home_access_success foo/snapshot/master.tar.gz
test_done

9
ui-snapshot.c
View File

@ -16,6 +16,7 @@ static int write_archive_type(const char *format, const char *hex, const char *p
{
struct argv_array argv = ARGV_ARRAY_INIT;
const char **nargv;
char *user_home, *xdg_home;
int result;
argv_array_push(&argv, "snapshot");
argv_array_push(&argv, format);
@ -38,7 +39,15 @@ static int write_archive_type(const char *format, const char *hex, const char *p
/* argv_array guarantees a trailing NULL entry. */
memcpy(nargv, argv.argv, sizeof(char *) * (argv.argc + 1));
user_home = getenv("HOME");
xdg_home = getenv("XDG_CONFIG_HOME");
unsetenv("HOME");
unsetenv("XDG_CONFIG_HOME");
result = write_archive(argv.argc, nargv, NULL, 1, NULL, 0);
if (user_home)
setenv("HOME", user_home, 1);
if (xdg_home)
setenv("XDG_CONFIG_HOME", xdg_home, 1);
argv_array_clear(&argv);
free(nargv);
return result;