bendns' repos / cgit
the repository which powers this website
Do not load user or system gitconfig and gitattributes
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. The result of this is that only repo-local configuration files are accessed: zx2c4@thinkpad ~/Projects/cgit $ HOME=/root QUERY_STRING="url=foo/log" CGIT_CONFIG=tests/trash/cgitrc strace -e access ./cgit >/dev/null access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) access("repos/foo/.git/objects", X_OK) = 0 access("repos/foo/.git/refs", X_OK) = 0 access("repos/foo/.git/config", R_OK) = 0 access("repos/foo/.git/config", R_OK) = 0 access("repos/foo/.git/objects/b3/bafdbf0183f4897ef8b1319cb8c490ed54717e", F_OK) = 0 access("repos/foo/.git/objects/b3/bafdbf0183f4897ef8b1319cb8c490ed54717e", F_OK) = 0 access("repos/foo/.git/objects/b3/bafdbf0183f4897ef8b1319cb8c490ed54717e", F_OK) = 0 access("repos/foo/.git/objects/b3/bafdbf0183f4897ef8b1319cb8c490ed54717e", F_OK) = 0 +++ exited with 0 +++ Reported-by: Ferry Huberts <[email protected]> Tested-by: Jason A. Donenfeld <[email protected]> Tested-by: Ferry Huberts <[email protected]> Signed-off-by: Jason A. Donenfeld <[email protected]>
Browse Source
Jason A. Donenfeld 2013-04-09
parent fb3655d · commit 8a92df0
Diffstat
-rw-r--r--cgit.c24
-rw-r--r--ui-commit.c1
-rw-r--r--ui-log.c1
3 files changed, 24 insertions, 2 deletions
diff --git a/cgit.c b/cgit.c
index f73c7b0b..0bf89723 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 6b41017a..a5a6ea83 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, &notes, PAGE_ENCODING, 0);
load_ref_decorations(DECORATE_FULL_REFS);
diff --git a/ui-log.c b/ui-log.c
index 93af0cee..2aa12c34 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);