http authentication via prompts

Curl is designed not to ask for password when only username is given in
the URL, but has a way for application to feed a (username, password) pair
to it.  With this patch, you do not have to keep your password in
plaintext in your $HOME/.netrc file when talking with a password protected
URL with http://<username>@<host>/path/to/repository.git/ syntax.

The code handles only the http-walker side, not the push side.  At least,
not yet.  But interested parties can add support for it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2009-03-09 23:34:25 -07:00
parent 7059cd99fc
commit c33976cbc6

60
http.c
View File

@ -25,6 +25,7 @@ static long curl_low_speed_limit = -1;
static long curl_low_speed_time = -1;
static int curl_ftp_no_epsv;
static const char *curl_http_proxy;
static char *user_name, *user_pass;
static struct curl_slist *pragma_header;
@ -135,6 +136,20 @@ static int http_options(const char *var, const char *value, void *cb)
return git_default_config(var, value, cb);
}
static void init_curl_http_auth(CURL *result)
{
if (!user_name)
curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
else {
struct strbuf up = STRBUF_INIT;
if (!user_pass)
user_pass = xstrdup(getpass("Password: "));
strbuf_addf(&up, "%s:%s", user_name, user_pass);
curl_easy_setopt(result, CURLOPT_USERPWD,
strbuf_detach(&up, NULL));
}
}
static CURL *get_curl_handle(void)
{
CURL *result = curl_easy_init();
@ -153,6 +168,8 @@ static CURL *get_curl_handle(void)
curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
#endif
init_curl_http_auth(result);
if (ssl_cert != NULL)
curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
#if LIBCURL_VERSION_NUM >= 0x070902
@ -190,6 +207,46 @@ static CURL *get_curl_handle(void)
return result;
}
static void http_auth_init(const char *url)
{
char *at, *colon, *cp, *slash;
int len;
cp = strstr(url, "://");
if (!cp)
return;
/*
* Ok, the URL looks like "proto://something". Which one?
* "proto://<user>:<pass>@<host>/...",
* "proto://<user>@<host>/...", or just
* "proto://<host>/..."?
*/
cp += 3;
at = strchr(cp, '@');
colon = strchr(cp, ':');
slash = strchrnul(cp, '/');
if (!at || slash <= at)
return; /* No credentials */
if (!colon || at <= colon) {
/* Only username */
len = at - cp;
user_name = xmalloc(len + 1);
memcpy(user_name, cp, len);
user_name[len] = '\0';
user_pass = NULL;
} else {
len = colon - cp;
user_name = xmalloc(len + 1);
memcpy(user_name, cp, len);
user_name[len] = '\0';
len = at - (colon + 1);
user_pass = xmalloc(len + 1);
memcpy(user_pass, colon + 1, len);
user_pass[len] = '\0';
}
}
static void set_from_env(const char **var, const char *envname)
{
const char *val = getenv(envname);
@ -255,6 +312,9 @@ void http_init(struct remote *remote)
if (getenv("GIT_CURL_FTP_NO_EPSV"))
curl_ftp_no_epsv = 1;
if (remote && remote->url && remote->url[0])
http_auth_init(remote->url[0]);
#ifndef NO_CURL_EASY_DUPHANDLE
curl_default = get_curl_handle();
#endif