[PATCH v2] http: add support for specifying the SSL version
From: Elia Pinto <hidden>
Date: 2016-06-15 23:06:09
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 <redacted> --- This is the second version. I moved out of the else clause from the #ifdef. Documentation/config.txt | 21 +++++++++++++++++++++ contrib/completion/git-completion.bash | 1 + http.c | 31 +++++++++++++++++++++++++++++-- 3 files changed, 51 insertions(+), 2 deletions(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 315f271..76a4f2b 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt@@ -1595,6 +1595,27 @@ 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..1504005 100644
--- a/http.c
+++ b/http.c@@ -37,6 +37,8 @@ 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 long sslversion = CURL_SSLVERSION_DEFAULT; #if LIBCURL_VERSION_NUM >= 0x070903 static const char *ssl_key; #endif
@@ -190,6 +192,8 @@ 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
@@ -364,13 +368,36 @@ 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) { + if (!strcmp(ssl_version,"tlsv1")) { + sslversion = CURL_SSLVERSION_TLSv1; + } else if (!strcmp(ssl_version,"sslv2")) { + sslversion = CURL_SSLVERSION_SSLv2; + } else if (!strcmp(ssl_version,"sslv3")) { + sslversion = CURL_SSLVERSION_SSLv3; +#if LIBCURL_VERSION_NUM >= 0x072200 + } else if (!strcmp(ssl_version,"tlsv1.0")) { + sslversion = CURL_SSLVERSION_TLSv1_0; + } else if (!strcmp(ssl_version,"tlsv1.1")) { + sslversion = CURL_SSLVERSION_TLSv1_1; + } else if (!strcmp(ssl_version,"tlsv1.2")) { + sslversion = CURL_SSLVERSION_TLSv1_2; +#endif + } else { + warning("unsupported ssl version %s : using default", + ssl_version); + } + } + curl_easy_setopt(result, CURLOPT_SSLVERSION, + sslversion); 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); - if (ssl_cert != NULL) curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); if (has_cert_password())
--
2.5.0.234.gefc8a62