From: Mark Lodato Date: Thu, 28 May 2009 03:16:02 +0000 (-0400) Subject: http.c: prompt for SSL client certificate password X-Git-Tag: v1.6.4-rc0~3^2~1 X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=30dd916348001e4313708473d91d633d3b14d1b5;p=git.git http.c: prompt for SSL client certificate password If an SSL client certificate is enabled (via http.sslcert or GIT_SSL_CERT), prompt for the certificate password rather than defaulting to OpenSSL's password prompt. This causes the prompt to only appear once each run. Previously, OpenSSL prompted the user *many* times, causing git to be unusable over HTTPS with client-side certificates. Note that the password is stored in memory in the clear while the program is running. This may be a security problem if git crashes and core dumps. The user is always prompted, even if the certificate is not encrypted. This should be fine; unencrypted certificates are rare and a security risk anyway. Signed-off-by: Mark Lodato Signed-off-by: Junio C Hamano --- diff --git a/http.c b/http.c index 2e3d6493e..1c138135d 100644 --- a/http.c +++ b/http.c @@ -27,6 +27,17 @@ static int curl_ftp_no_epsv; static const char *curl_http_proxy; static char *user_name, *user_pass; +#if LIBCURL_VERSION_NUM >= 0x071700 +/* Use CURLOPT_KEYPASSWD as is */ +#elif LIBCURL_VERSION_NUM >= 0x070903 +#define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD +#else +#define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD +#endif + +static char *ssl_cert_password; +static int ssl_cert_password_required; + static struct curl_slist *pragma_header; static struct active_request_slot *active_queue_head; @@ -167,6 +178,22 @@ static void init_curl_http_auth(CURL *result) } } +static int has_cert_password(void) +{ + if (ssl_cert_password != NULL) + return 1; + if (ssl_cert == NULL || ssl_cert_password_required != 1) + return 0; + /* Only prompt the user once. */ + ssl_cert_password_required = -1; + ssl_cert_password = getpass("Certificate Password: "); + if (ssl_cert_password != NULL) { + ssl_cert_password = xstrdup(ssl_cert_password); + return 1; + } else + return 0; +} + static CURL *get_curl_handle(void) { CURL *result = curl_easy_init(); @@ -189,6 +216,8 @@ static CURL *get_curl_handle(void) if (ssl_cert != NULL) curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); + if (has_cert_password()) + curl_easy_setopt(result, CURLOPT_KEYPASSWD, ssl_cert_password); #if LIBCURL_VERSION_NUM >= 0x070902 if (ssl_key != NULL) curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); @@ -329,8 +358,11 @@ 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]) + if (remote && remote->url && remote->url[0]) { http_auth_init(remote->url[0]); + if (!prefixcmp(remote->url[0], "https://")) + ssl_cert_password_required = 1; + } #ifndef NO_CURL_EASY_DUPHANDLE curl_default = get_curl_handle(); @@ -370,6 +402,13 @@ void http_cleanup(void) free((void *)curl_http_proxy); curl_http_proxy = NULL; } + + if (ssl_cert_password != NULL) { + memset(ssl_cert_password, 0, strlen(ssl_cert_password)); + free(ssl_cert_password); + ssl_cert_password = NULL; + } + ssl_cert_password_required = 0; } struct active_request_slot *get_active_slot(void)