Code

Merge branch 'ph/rerere-doc' into maint-1.7.8
[git.git] / http.c
diff --git a/http.c b/http.c
index fb3465f50c95ab9cb3e6fae1d1e594f6ae0b9c42..5a1047345997cf35c40cfff5420f5519958257c3 100644 (file)
--- a/http.c
+++ b/http.c
@@ -4,7 +4,6 @@
 #include "run-command.h"
 #include "url.h"
 
-int data_received;
 int active_requests;
 int http_is_verbose;
 size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
@@ -42,7 +41,8 @@ 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 char *user_name, *user_pass, *description;
+static int http_proactive_auth;
 static const char *user_agent;
 
 #if LIBCURL_VERSION_NUM >= 0x071700
@@ -99,13 +99,11 @@ size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
        struct strbuf *buffer = buffer_;
 
        strbuf_add(buffer, ptr, size);
-       data_received++;
        return size;
 }
 
 size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
 {
-       data_received++;
        return eltsize * nmemb;
 }
 
@@ -139,6 +137,27 @@ static void process_curl_messages(void)
 }
 #endif
 
+static char *git_getpass_with_description(const char *what, const char *desc)
+{
+       struct strbuf prompt = STRBUF_INIT;
+       char *r;
+
+       if (desc)
+               strbuf_addf(&prompt, "%s for '%s': ", what, desc);
+       else
+               strbuf_addf(&prompt, "%s: ", what);
+       /*
+        * NEEDSWORK: for usernames, we should do something less magical that
+        * actually echoes the characters. However, we need to read from
+        * /dev/tty and not stdio, which is not portable (but getpass will do
+        * it for us). http.c uses the same workaround.
+        */
+       r = git_getpass(prompt.buf);
+
+       strbuf_release(&prompt);
+       return xstrdup(r);
+}
+
 static int http_options(const char *var, const char *value, void *cb)
 {
        if (!strcmp("http.sslverify", var)) {
@@ -214,7 +233,7 @@ static void init_curl_http_auth(CURL *result)
        if (user_name) {
                struct strbuf up = STRBUF_INIT;
                if (!user_pass)
-                       user_pass = xstrdup(git_getpass("Password: "));
+                       user_pass = xstrdup(git_getpass_with_description("Password", description));
                strbuf_addf(&up, "%s:%s", user_name, user_pass);
                curl_easy_setopt(result, CURLOPT_USERPWD,
                                 strbuf_detach(&up, NULL));
@@ -229,7 +248,7 @@ static int has_cert_password(void)
                return 0;
        /* Only prompt the user once. */
        ssl_cert_password_required = -1;
-       ssl_cert_password = git_getpass("Certificate Password: ");
+       ssl_cert_password = git_getpass_with_description("Certificate Password", description);
        if (ssl_cert_password != NULL) {
                ssl_cert_password = xstrdup(ssl_cert_password);
                return 1;
@@ -258,7 +277,8 @@ static CURL *get_curl_handle(void)
        curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 #endif
 
-       init_curl_http_auth(result);
+       if (http_proactive_auth)
+               init_curl_http_auth(result);
 
        if (ssl_cert != NULL)
                curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
@@ -307,8 +327,7 @@ static CURL *get_curl_handle(void)
 
 static void http_auth_init(const char *url)
 {
-       char *at, *colon, *cp, *slash, *decoded;
-       int len;
+       const char *at, *colon, *cp, *slash, *host;
 
        cp = strstr(url, "://");
        if (!cp)
@@ -324,34 +343,22 @@ static void http_auth_init(const char *url)
        at = strchr(cp, '@');
        colon = strchr(cp, ':');
        slash = strchrnul(cp, '/');
-       if (!at || slash <= at)
-               return; /* No credentials */
-       if (!colon || at <= colon) {
+       if (!at || slash <= at) {
+               /* No credentials, but we may have to ask for some later */
+               host = cp;
+       }
+       else 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_name = url_decode_mem(cp, at - cp);
                user_pass = NULL;
+               host = at + 1;
        } 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;
+               user_name = url_decode_mem(cp, colon - cp);
+               user_pass = url_decode_mem(colon + 1, at - (colon + 1));
+               host = at + 1;
        }
+
+       description = url_decode_mem(host, slash - host);
 }
 
 static void set_from_env(const char **var, const char *envname)
@@ -361,7 +368,7 @@ 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, int proactive_auth)
 {
        char *low_speed_limit;
        char *low_speed_time;
@@ -372,6 +379,8 @@ void http_init(struct remote *remote)
 
        curl_global_init(CURL_GLOBAL_ALL);
 
+       http_proactive_auth = proactive_auth;
+
        if (remote && remote->http_proxy)
                curl_http_proxy = xstrdup(remote->http_proxy);
 
@@ -425,11 +434,11 @@ 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) {
+               http_auth_init(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;
        }
 
@@ -530,7 +539,6 @@ struct active_request_slot *get_active_slot(void)
 
        active_requests++;
        slot->in_use = 1;
-       slot->local = NULL;
        slot->results = NULL;
        slot->finished = NULL;
        slot->callback_data = NULL;
@@ -634,8 +642,6 @@ void step_active_slots(void)
 void run_active_slot(struct active_request_slot *slot)
 {
 #ifdef USE_CURL_MULTI
-       long last_pos = 0;
-       long current_pos;
        fd_set readfds;
        fd_set writefds;
        fd_set excfds;
@@ -645,25 +651,33 @@ void run_active_slot(struct active_request_slot *slot)
 
        slot->finished = &finished;
        while (!finished) {
-               data_received = 0;
                step_active_slots();
 
-               if (!data_received && slot->local != NULL) {
-                       current_pos = ftell(slot->local);
-                       if (current_pos > last_pos)
-                               data_received++;
-                       last_pos = current_pos;
-               }
+               if (slot->in_use) {
+#if LIBCURL_VERSION_NUM >= 0x070f04
+                       long curl_timeout;
+                       curl_multi_timeout(curlm, &curl_timeout);
+                       if (curl_timeout == 0) {
+                               continue;
+                       } else if (curl_timeout == -1) {
+                               select_timeout.tv_sec  = 0;
+                               select_timeout.tv_usec = 50000;
+                       } else {
+                               select_timeout.tv_sec  =  curl_timeout / 1000;
+                               select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
+                       }
+#else
+                       select_timeout.tv_sec  = 0;
+                       select_timeout.tv_usec = 50000;
+#endif
 
-               if (slot->in_use && !data_received) {
-                       max_fd = 0;
+                       max_fd = -1;
                        FD_ZERO(&readfds);
                        FD_ZERO(&writefds);
                        FD_ZERO(&excfds);
-                       select_timeout.tv_sec = 0;
-                       select_timeout.tv_usec = 50000;
-                       select(max_fd, &readfds, &writefds,
-                              &excfds, &select_timeout);
+                       curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
+
+                       select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
                }
        }
 #else
@@ -741,14 +755,6 @@ 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;
@@ -816,7 +822,6 @@ static int http_request(const char *url, void *result, int target, int options)
                                headers = curl_slist_append(headers, buf.buf);
                                strbuf_reset(&buf);
                        }
-                       slot->local = result;
                } else
                        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
                                         fwrite_buffer);
@@ -838,7 +843,7 @@ 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 (user_name && user_pass) {
                                ret = HTTP_NOAUTH;
                        } else {
                                /*
@@ -847,7 +852,8 @@ static int http_request(const char *url, void *result, int target, int options)
                                 * 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: "));
+                               if (!user_name)
+                                       user_name = xstrdup(git_getpass_with_description("Username", description));
                                init_curl_http_auth(slot->curl);
                                ret = HTTP_REAUTH;
                        }
@@ -863,20 +869,24 @@ static int http_request(const char *url, void *result, int target, int options)
                ret = HTTP_START_FAILED;
        }
 
-       slot->local = NULL;
        curl_slist_free_all(headers);
        strbuf_release(&buf);
 
        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);
 }
 
 /*
@@ -899,7 +909,7 @@ 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))
@@ -1053,7 +1063,6 @@ void release_http_pack_request(struct http_pack_request *preq)
        if (preq->packfile != NULL) {
                fclose(preq->packfile);
                preq->packfile = NULL;
-               preq->slot->local = NULL;
        }
        if (preq->range_header != NULL) {
                curl_slist_free_all(preq->range_header);
@@ -1075,7 +1084,6 @@ int finish_http_pack_request(struct http_pack_request *preq)
 
        fclose(preq->packfile);
        preq->packfile = NULL;
-       preq->slot->local = NULL;
 
        lst = preq->lst;
        while (*lst != p)
@@ -1144,7 +1152,6 @@ struct http_pack_request *new_http_pack_request(
        }
 
        preq->slot = get_active_slot();
-       preq->slot->local = preq->packfile;
        curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
        curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
        curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
@@ -1201,7 +1208,6 @@ static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
                git_SHA1_Update(&freq->c, expn,
                                sizeof(expn) - freq->stream.avail_out);
        } while (freq->stream.avail_in && freq->zret == Z_OK);
-       data_received++;
        return size;
 }