Teach git about a new option, "http.sslVersion", which permits one to
specify the SSL version to use when negotiating SSL connections. The
setting can be overridden by the GIT_SSL_VERSION environment
variable.
Signed-off-by: Elia Pinto <gitter.spiros@xxxxxxxxx>
---
This is the third version of the patch. The changes compared to the previous version are:
- Eliminated the unnecessary blank (Junio)
- Place a structure to associate mnemonic names with the curl enum constant (Junio)
- Eliminated the invocation to curl_easy_setopt to set the default SSL value. Also removed the static global variable.
(Junio)
- Slight correction in config.txt (Eric)
Documentation/config.txt | 22 ++++++++++++++++++++++
contrib/completion/git-completion.bash | 1 +
http.c | 32 +++++++++++++++++++++++++++++++-
3 files changed, 54 insertions(+), 1 deletion(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 315f271..b23b01a 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1595,6 +1595,28 @@ http.saveCookies::
If set, store cookies received during requests to the file specified by
http.cookieFile. Has no effect if http.cookieFile is unset.
+http.sslVersion::
+ The SSL version to use when negotiating an SSL connection, if you
+ want to force the default. The available and default version depend on
+ whether libcurl was built against NSS or OpenSSL and the particular configuration
+ of the crypto library in use. Internally this sets the 'CURLOPT_SSL_VERSION'
+ option; see the libcurl documentation for more details on the format
+ of this option and for the ssl version supported. Actually the possible values
+ of this option are:
+
+ - sslv2
+ - sslv3
+ - tlsv1
+ - tlsv1.0
+ - tlsv1.1
+ - tlsv1.2
+
++
+Can be overridden by the 'GIT_SSL_VERSION' environment variable.
+To force git to use libcurl's default ssl version and ignore any
+explicit http.sslversion option, set 'GIT_SSL_VERSION' to the
+empty string.
+
http.sslCipherList::
A list of SSL ciphers to use when negotiating an SSL connection.
The available ciphers depend on whether libcurl was built against
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index c97c648..6e9359c 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2118,6 +2118,7 @@ _git_config ()
http.postBuffer
http.proxy
http.sslCipherList
+ http.sslVersion
http.sslCAInfo
http.sslCAPath
http.sslCert
diff --git a/http.c b/http.c
index e9c6fdd..d5fecd6 100644
--- a/http.c
+++ b/http.c
@@ -37,6 +37,21 @@ static int curl_ssl_verify = -1;
static int curl_ssl_try;
static const char *ssl_cert;
static const char *ssl_cipherlist;
+static const char *ssl_version;
+static struct {
+ const char *name;
+ long ssl_version;
+ } sslversions[] = {
+ { "sslv2", CURL_SSLVERSION_SSLv2 },
+ { "sslv3", CURL_SSLVERSION_TLSv1 },
+ { "tlsv1", CURL_SSLVERSION_TLSv1 },
+#if LIBCURL_VERSION_NUM >= 0x072200
+ { "tlsv1.0", CURL_SSLVERSION_TLSv1_0 },
+ { "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
+ { "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
+#endif
+ { NULL }
+};
#if LIBCURL_VERSION_NUM >= 0x070903
static const char *ssl_key;
#endif
@@ -190,6 +205,8 @@ static int http_options(const char *var, const char *value, void *cb)
}
if (!strcmp("http.sslcipherlist", var))
return git_config_string(&ssl_cipherlist, var, value);
+ if (!strcmp("http.sslversion", var))
+ return git_config_string(&ssl_version, var, value);
if (!strcmp("http.sslcert", var))
return git_config_string(&ssl_cert, var, value);
#if LIBCURL_VERSION_NUM >= 0x070903
@@ -364,9 +381,22 @@ static CURL *get_curl_handle(void)
if (http_proactive_auth)
init_curl_http_auth(result);
+ if (getenv("GIT_SSL_VERSION"))
+ ssl_version = getenv("GIT_SSL_VERSION");
+ if (ssl_version != NULL && *ssl_version) {
+ int i;
+ for ( i = 0; i < ARRAY_SIZE(sslversions); i++ ) {
+ if (sslversions[i].name != NULL && *sslversions[i].name && !strcmp(ssl_version,sslversions[i].name)) {
+ curl_easy_setopt(result, CURLOPT_SSLVERSION,
+ sslversions[i].ssl_version);
+ break;
+ }
+ if ( i == ARRAY_SIZE(sslversions) ) warning("unsupported ssl version %s: using default",
+ ssl_version);
+ }
+
if (getenv("GIT_SSL_CIPHER_LIST"))
ssl_cipherlist = getenv("GIT_SSL_CIPHER_LIST");
-
if (ssl_cipherlist != NULL && *ssl_cipherlist)
curl_easy_setopt(result, CURLOPT_SSL_CIPHER_LIST,
ssl_cipherlist);
--
2.5.0.234.gefc8a62.dirty
--
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