From e32a4581bcbf1cf43cd5069a0d19df07542d612a Mon Sep 17 00:00:00 2001 From: Jeff King Date: Fri, 30 Mar 2012 03:01:30 -0400 Subject: http-backend: respect existing GIT_COMMITTER_* variables The http-backend program sets default GIT_COMMITTER_NAME and GIT_COMMITTER_EMAIL variables based on the REMOTE_USER and REMOTE_ADDR variables provided by the webserver. However, it unconditionally overwrites any existing GIT_COMMITTER variables, which may have been customized by site-specific code in the webserver (or in a script wrapping http-backend). Let's leave those variables intact if they already exist, assuming that any such configuration was intentional. There is a slight chance of a regression if somebody has set GIT_COMMITTER_* for the entire webserver, not intending it to leak through http-backend. We could protect against this by passing the information in alternate variables. However, it seems unlikely that anyone will care about that regression, and there is value in the simplicity of using the common variable names that are used elsewhere in git. While we're tweaking the environment-handling in http-backend, let's switch it to use argv_array to handle the list of variables. That makes the memory management much simpler. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- http-backend.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) (limited to 'http-backend.c') diff --git a/http-backend.c b/http-backend.c index 869d51538..f50e77fb2 100644 --- a/http-backend.c +++ b/http-backend.c @@ -7,6 +7,7 @@ #include "run-command.h" #include "string-list.h" #include "url.h" +#include "argv-array.h" static const char content_type[] = "Content-Type"; static const char content_length[] = "Content-Length"; @@ -317,8 +318,7 @@ static void run_service(const char **argv) const char *encoding = getenv("HTTP_CONTENT_ENCODING"); const char *user = getenv("REMOTE_USER"); const char *host = getenv("REMOTE_ADDR"); - char *env[3]; - struct strbuf buf = STRBUF_INIT; + struct argv_array env = ARGV_ARRAY_INIT; int gzipped_request = 0; struct child_process cld; @@ -332,17 +332,15 @@ static void run_service(const char **argv) if (!host || !*host) host = "(none)"; - memset(&env, 0, sizeof(env)); - strbuf_addf(&buf, "GIT_COMMITTER_NAME=%s", user); - env[0] = strbuf_detach(&buf, NULL); - - strbuf_addf(&buf, "GIT_COMMITTER_EMAIL=%s@http.%s", user, host); - env[1] = strbuf_detach(&buf, NULL); - env[2] = NULL; + if (!getenv("GIT_COMMITTER_NAME")) + argv_array_pushf(&env, "GIT_COMMITTER_NAME=%s", user); + if (!getenv("GIT_COMMITTER_EMAIL")) + argv_array_pushf(&env, "GIT_COMMITTER_EMAIL=%s@http.%s", + user, host); memset(&cld, 0, sizeof(cld)); cld.argv = argv; - cld.env = (const char *const *)env; + cld.env = env.argv; if (gzipped_request) cld.in = -1; cld.git_cmd = 1; @@ -357,9 +355,7 @@ static void run_service(const char **argv) if (finish_command(&cld)) exit(1); - free(env[0]); - free(env[1]); - strbuf_release(&buf); + argv_array_clear(&env); } static int show_text_ref(const char *name, const unsigned char *sha1, -- cgit v1.2.1