From: "Jason A. Donenfeld" <ja...@zx2c4.com>
While doing any kind of git loading, unset HOME variables and set
NOSYSTEM variables so that cgit does not load any settings that a user
may have set for his own /usr/bin/git usage.
This fixes a fatal error introduced with git 1.8, whereupon git would
fatally exit when failing to access particular files.
Reported-by: Ferry Huberts <ferry.hube...@pelagic.nl>
Tested-by: Jason A. Donenfeld <ja...@zx2c4.com>
Tested-by: Ferry Huberts <ferry.hube...@pelagic.nl>
Signed-off-by: Jason A. Donenfeld <ja...@zx2c4.com>
---
cgit.c | 24 ++++++++++++++++++++++++
ui-commit.c | 1 -
ui-log.c | 1 -
3 files changed, 24 insertions(+), 2 deletions(-)
diff --git a/cgit.c b/cgit.c
index f73c7b0..0bf8972 100644
--- a/cgit.c
+++ b/cgit.c
@@ -459,12 +459,36 @@ static char *guess_defbranch(void)
static int prepare_repo_cmd(struct cgit_context *ctx)
{
+ char *user_home;
+ char *xdg_home;
unsigned char sha1[20];
int nongit = 0;
int rc;
+ /* The path to the git repository. */
setenv("GIT_DIR", ctx->repo->path, 1);
+
+ /* Do not look in /etc/ for gitconfig and gitattributes. */
+ setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
+ setenv("GIT_ATTR_NOSYSTEM", "1", 1);
+
+ /* We unset HOME and XDG_CONFIG_HOME before calling the git setup
function
+ * so that we don't make unneccessary filesystem accesses. */
+ user_home = getenv("HOME");
+ xdg_home = getenv("XDG_CONFIG_HOME");
+ unsetenv("HOME");
+ unsetenv("XDG_CONFIG_HOME");
+
+ /* Setup the git directory and initialize the notes system. Both of
these
+ * load local configuration from the git repository, so we do them both
while
+ * the HOME variables are unset. */
setup_git_directory_gently(&nongit);
+ init_display_notes(NULL);
+
+ /* We restore the unset variables afterward. */
+ setenv("HOME", user_home, 1);
+ setenv("XDG_CONFIG_HOME", xdg_home, 1);
+
if (nongit) {
const char *name = ctx->repo->name;
rc = errno;
diff --git a/ui-commit.c b/ui-commit.c
index 6b41017..a5a6ea8 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -37,7 +37,6 @@ void cgit_print_commit(char *hex, const char *prefix)
}
info = cgit_parse_commit(commit);
- init_display_notes(NULL);
format_display_notes(sha1, ¬es, PAGE_ENCODING, 0);
load_ref_decorations(DECORATE_FULL_REFS);
diff --git a/ui-log.c b/ui-log.c
index 93af0ce..2aa12c3 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -403,7 +403,6 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char
*grep, char *pattern
commit->parents = NULL;
}
- init_display_notes(NULL);
for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
print_commit(commit, &rev);
free(commit->buffer);
--
1.8.1.5
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