contrib: add credential helper for OS X Keychain
[gitweb.git] / http.c
diff --git a/http.c b/http.c
index a59cac45d7a6c159e740cab9b20bb63ab91f7c48..917a1ae7d088f56cd704acb60a5eefa02bb72edc 100644 (file)
--- a/http.c
+++ b/http.c
@@ -3,6 +3,7 @@
 #include "sideband.h"
 #include "run-command.h"
 #include "url.h"
+#include "credential.h"
 
 int data_received;
 int active_requests;
@@ -42,7 +43,7 @@ static long curl_low_speed_time = -1;
 static int curl_ftp_no_epsv;
 static const char *curl_http_proxy;
 static const char *curl_cookie_file;
-static char *user_name, *user_pass;
+static struct credential http_auth = CREDENTIAL_INIT;
 static const char *user_agent;
 
 #if LIBCURL_VERSION_NUM >= 0x071700
@@ -53,7 +54,7 @@ static const char *user_agent;
 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
 #endif
 
-static char *ssl_cert_password;
+static struct credential cert_auth = CREDENTIAL_INIT;
 static int ssl_cert_password_required;
 
 static struct curl_slist *pragma_header;
@@ -211,11 +212,11 @@ static int http_options(const char *var, const char *value, void *cb)
 
 static void init_curl_http_auth(CURL *result)
 {
-       if (user_name) {
+       if (http_auth.username) {
                struct strbuf up = STRBUF_INIT;
-               if (!user_pass)
-                       user_pass = xstrdup(git_getpass("Password: "));
-               strbuf_addf(&up, "%s:%s", user_name, user_pass);
+               credential_fill(&http_auth);
+               strbuf_addf(&up, "%s:%s",
+                           http_auth.username, http_auth.password);
                curl_easy_setopt(result, CURLOPT_USERPWD,
                                 strbuf_detach(&up, NULL));
        }
@@ -223,18 +224,14 @@ 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 = git_getpass("Certificate Password: ");
-       if (ssl_cert_password != NULL) {
-               ssl_cert_password = xstrdup(ssl_cert_password);
-               return 1;
-       } else
-               return 0;
+       if (!cert_auth.password) {
+               cert_auth.protocol = xstrdup("cert");
+               cert_auth.path = xstrdup(ssl_cert);
+               credential_fill(&cert_auth);
+       }
+       return 1;
 }
 
 static CURL *get_curl_handle(void)
@@ -258,12 +255,10 @@ static CURL *get_curl_handle(void)
        curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 #endif
 
-       init_curl_http_auth(result);
-
        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);
+               curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
 #if LIBCURL_VERSION_NUM >= 0x070903
        if (ssl_key != NULL)
                curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
@@ -305,55 +300,6 @@ static CURL *get_curl_handle(void)
        return result;
 }
 
-static void http_auth_init(const char *url)
-{
-       char *at, *colon, *cp, *slash, *decoded;
-       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';
-               decoded = url_decode(user_name);
-               free(user_name);
-               user_name = decoded;
-               user_pass = NULL;
-       } else {
-               len = colon - cp;
-               user_name = xmalloc(len + 1);
-               memcpy(user_name, cp, len);
-               user_name[len] = '\0';
-               decoded = url_decode(user_name);
-               free(user_name);
-               user_name = decoded;
-               len = at - (colon + 1);
-               user_pass = xmalloc(len + 1);
-               memcpy(user_pass, colon + 1, len);
-               user_pass[len] = '\0';
-               decoded = url_decode(user_pass);
-               free(user_pass);
-               user_pass = decoded;
-       }
-}
-
 static void set_from_env(const char **var, const char *envname)
 {
        const char *val = getenv(envname);
@@ -361,7 +307,7 @@ static void set_from_env(const char **var, const char *envname)
                *var = val;
 }
 
-void http_init(struct remote *remote)
+void http_init(struct remote *remote, const char *url)
 {
        char *low_speed_limit;
        char *low_speed_time;
@@ -425,11 +371,11 @@ 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]) {
-               http_auth_init(remote->url[0]);
+       if (url) {
+               credential_from_url(&http_auth, url);
                if (!ssl_cert_password_required &&
                    getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
-                   !prefixcmp(remote->url[0], "https://"))
+                   !prefixcmp(url, "https://"))
                        ssl_cert_password_required = 1;
        }
 
@@ -475,10 +421,10 @@ void http_cleanup(void)
                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;
+       if (cert_auth.password != NULL) {
+               memset(cert_auth.password, 0, strlen(cert_auth.password));
+               free(cert_auth.password);
+               cert_auth.password = NULL;
        }
        ssl_cert_password_required = 0;
 }
@@ -741,14 +687,6 @@ static inline int needs_quote(int ch)
        return 1;
 }
 
-static inline int hex(int v)
-{
-       if (v < 10)
-               return '0' + v;
-       else
-               return 'A' + v - 10;
-}
-
 static char *quote_ref_url(const char *base, const char *ref)
 {
        struct strbuf buf = STRBUF_INIT;
@@ -838,21 +776,21 @@ static int http_request(const char *url, void *result, int target, int options)
                else if (missing_target(&results))
                        ret = HTTP_MISSING_TARGET;
                else if (results.http_code == 401) {
-                       if (user_name) {
+                       if (http_auth.username && http_auth.password) {
+                               credential_reject(&http_auth);
                                ret = HTTP_NOAUTH;
                        } else {
-                               /*
-                                * git_getpass is needed here because its very likely stdin/stdout are
-                                * pipes to our parent process.  So we instead need to use /dev/tty,
-                                * but that is non-portable.  Using git_getpass() can at least be stubbed
-                                * on other platforms with a different implementation if/when necessary.
-                                */
-                               user_name = xstrdup(git_getpass("Username: "));
+                               credential_fill(&http_auth);
                                init_curl_http_auth(slot->curl);
                                ret = HTTP_REAUTH;
                        }
-               } else
+               } else {
+                       if (!curl_errorstr[0])
+                               strlcpy(curl_errorstr,
+                                       curl_easy_strerror(results.curl_result),
+                                       sizeof(curl_errorstr));
                        ret = HTTP_ERROR;
+               }
        } else {
                error("Unable to start HTTP request for %s", url);
                ret = HTTP_START_FAILED;
@@ -862,16 +800,24 @@ static int http_request(const char *url, void *result, int target, int options)
        curl_slist_free_all(headers);
        strbuf_release(&buf);
 
+       if (ret == HTTP_OK)
+               credential_approve(&http_auth);
+
        return ret;
 }
 
+static int http_request_reauth(const char *url, void *result, int target,
+                              int options)
+{
+       int ret = http_request(url, result, target, options);
+       if (ret != HTTP_REAUTH)
+               return ret;
+       return http_request(url, result, target, options);
+}
+
 int http_get_strbuf(const char *url, struct strbuf *result, int options)
 {
-       int http_ret = http_request(url, result, HTTP_REQUEST_STRBUF, options);
-       if (http_ret == HTTP_REAUTH) {
-               http_ret = http_request(url, result, HTTP_REQUEST_STRBUF, options);
-       }
-       return http_ret;
+       return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
 }
 
 /*
@@ -894,7 +840,7 @@ static int http_get_file(const char *url, const char *filename, int options)
                goto cleanup;
        }
 
-       ret = http_request(url, result, HTTP_REQUEST_FILE, options);
+       ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
        fclose(result);
 
        if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename))
@@ -908,7 +854,7 @@ int http_error(const char *url, int ret)
 {
        /* http_request has already handled HTTP_START_FAILED. */
        if (ret != HTTP_START_FAILED)
-               error("%s while accessing %s\n", curl_errorstr, url);
+               error("%s while accessing %s", curl_errorstr, url);
 
        return ret;
 }