#include "gettext.h"
#include "transport.h"
+static struct trace_key trace_curl = TRACE_KEY_INIT(CURL);
+#if LIBCURL_VERSION_NUM >= 0x070a08
+long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
+#else
+long int git_curl_ipresolve;
+#endif
int active_requests;
int http_is_verbose;
-size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
+ssize_t http_post_buffer = 16 * LARGE_PACKET_MAX;
#if LIBCURL_VERSION_NUM >= 0x070a06
#define LIBCURL_CAN_HANDLE_AUTH_ANY
#endif
#define PREV_BUF_SIZE 4096
-#define RANGE_HEADER_SIZE 30
char curl_errorstr[CURL_ERROR_SIZE];
#if LIBCURL_VERSION_NUM >= 0x070908
static const char *ssl_capath;
#endif
+#if LIBCURL_VERSION_NUM >= 0x072c00
+static const char *ssl_pinnedkey;
+#endif
static const char *ssl_cainfo;
static long curl_low_speed_limit = -1;
static long curl_low_speed_time = -1;
static int curl_ftp_no_epsv;
static const char *curl_http_proxy;
+static const char *curl_no_proxy;
+static const char *http_proxy_authmethod;
+static struct {
+ const char *name;
+ long curlauth_param;
+} proxy_authmethods[] = {
+ { "basic", CURLAUTH_BASIC },
+ { "digest", CURLAUTH_DIGEST },
+ { "negotiate", CURLAUTH_GSSNEGOTIATE },
+ { "ntlm", CURLAUTH_NTLM },
+#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
+ { "anyauth", CURLAUTH_ANY },
+#endif
+ /*
+ * CURLAUTH_DIGEST_IE has no corresponding command-line option in
+ * curl(1) and is not included in CURLAUTH_ANY, so we leave it out
+ * here, too
+ */
+};
+#if LIBCURL_VERSION_NUM >= 0x071600
+static const char *curl_deleg;
+static struct {
+ const char *name;
+ long curl_deleg_param;
+} curl_deleg_levels[] = {
+ { "none", CURLGSSAPI_DELEGATION_NONE },
+ { "policy", CURLGSSAPI_DELEGATION_POLICY_FLAG },
+ { "always", CURLGSSAPI_DELEGATION_FLAG },
+};
+#endif
+
+static struct credential proxy_auth = CREDENTIAL_INIT;
+static const char *curl_proxyuserpwd;
static const char *curl_cookie_file;
static int curl_save_cookies;
struct credential http_auth = CREDENTIAL_INIT;
static int http_proactive_auth;
static const char *user_agent;
+static int curl_empty_auth = -1;
+
+enum http_follow_config http_follow_config = HTTP_FOLLOW_INITIAL;
#if LIBCURL_VERSION_NUM >= 0x071700
/* Use CURLOPT_KEYPASSWD as is */
static int ssl_cert_password_required;
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
static unsigned long http_auth_methods = CURLAUTH_ANY;
+static int http_auth_methods_restricted;
+/* Modes for which empty_auth cannot actually help us. */
+static unsigned long empty_auth_useless =
+ CURLAUTH_BASIC
+#ifdef CURLAUTH_DIGEST_IE
+ | CURLAUTH_DIGEST_IE
+#endif
+ | CURLAUTH_DIGEST;
#endif
static struct curl_slist *pragma_header;
static struct curl_slist *no_pragma_header;
+static struct curl_slist *extra_http_headers;
static struct active_request_slot *active_queue_head;
#else
slot->results->auth_avail = 0;
#endif
+
+ curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CONNECTCODE,
+ &slot->results->http_connectcode);
}
/* Run callback if appropriate */
slot->callback_func(slot->callback_data);
}
+static void xmulti_remove_handle(struct active_request_slot *slot)
+{
+#ifdef USE_CURL_MULTI
+ curl_multi_remove_handle(curlm, slot->curl);
+#endif
+}
+
#ifdef USE_CURL_MULTI
static void process_curl_messages(void)
{
slot->curl != curl_message->easy_handle)
slot = slot->next;
if (slot != NULL) {
- curl_multi_remove_handle(curlm, slot->curl);
+ xmulti_remove_handle(slot);
slot->curl_result = curl_result;
finish_active_slot(slot);
} else {
if (!strcmp("http.proxy", var))
return git_config_string(&curl_http_proxy, var, value);
+ if (!strcmp("http.proxyauthmethod", var))
+ return git_config_string(&http_proxy_authmethod, var, value);
+
if (!strcmp("http.cookiefile", var))
- return git_config_string(&curl_cookie_file, var, value);
+ return git_config_pathname(&curl_cookie_file, var, value);
if (!strcmp("http.savecookies", var)) {
curl_save_cookies = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.postbuffer", var)) {
- http_post_buffer = git_config_int(var, value);
+ http_post_buffer = git_config_ssize_t(var, value);
+ if (http_post_buffer < 0)
+ warning(_("negative value for http.postbuffer; defaulting to %d"), LARGE_PACKET_MAX);
if (http_post_buffer < LARGE_PACKET_MAX)
http_post_buffer = LARGE_PACKET_MAX;
return 0;
if (!strcmp("http.useragent", var))
return git_config_string(&user_agent, var, value);
+ if (!strcmp("http.emptyauth", var)) {
+ if (value && !strcmp("auto", value))
+ curl_empty_auth = -1;
+ else
+ curl_empty_auth = git_config_bool(var, value);
+ return 0;
+ }
+
+ if (!strcmp("http.delegation", var)) {
+#if LIBCURL_VERSION_NUM >= 0x071600
+ return git_config_string(&curl_deleg, var, value);
+#else
+ warning(_("Delegation control is not supported with cURL < 7.22.0"));
+ return 0;
+#endif
+ }
+
+ if (!strcmp("http.pinnedpubkey", var)) {
+#if LIBCURL_VERSION_NUM >= 0x072c00
+ return git_config_pathname(&ssl_pinnedkey, var, value);
+#else
+ warning(_("Public key pinning not supported with cURL < 7.44.0"));
+ return 0;
+#endif
+ }
+
+ if (!strcmp("http.extraheader", var)) {
+ if (!value) {
+ return config_error_nonbool(var);
+ } else if (!*value) {
+ curl_slist_free_all(extra_http_headers);
+ extra_http_headers = NULL;
+ } else {
+ extra_http_headers =
+ curl_slist_append(extra_http_headers, value);
+ }
+ return 0;
+ }
+
+ if (!strcmp("http.followredirects", var)) {
+ if (value && !strcmp(value, "initial"))
+ http_follow_config = HTTP_FOLLOW_INITIAL;
+ else if (git_config_bool(var, value))
+ http_follow_config = HTTP_FOLLOW_ALWAYS;
+ else
+ http_follow_config = HTTP_FOLLOW_NONE;
+ return 0;
+ }
+
/* Fall back on the default ones */
return git_default_config(var, value, cb);
}
+static int curl_empty_auth_enabled(void)
+{
+ if (curl_empty_auth >= 0)
+ return curl_empty_auth;
+
+#ifndef LIBCURL_CAN_HANDLE_AUTH_ANY
+ /*
+ * Our libcurl is too old to do AUTH_ANY in the first place;
+ * just default to turning the feature off.
+ */
+#else
+ /*
+ * In the automatic case, kick in the empty-auth
+ * hack as long as we would potentially try some
+ * method more exotic than "Basic" or "Digest".
+ *
+ * But only do this when this is our second or
+ * subsequent request, as by then we know what
+ * methods are available.
+ */
+ if (http_auth_methods_restricted &&
+ (http_auth_methods & ~empty_auth_useless))
+ return 1;
+#endif
+ return 0;
+}
+
static void init_curl_http_auth(CURL *result)
{
- if (!http_auth.username)
+ if (!http_auth.username || !*http_auth.username) {
+ if (curl_empty_auth_enabled())
+ curl_easy_setopt(result, CURLOPT_USERPWD, ":");
return;
+ }
credential_fill(&http_auth);
#endif
}
+/* *var must be free-able */
+static void var_override(const char **var, char *value)
+{
+ if (value) {
+ free((void *)*var);
+ *var = xstrdup(value);
+ }
+}
+
+static void set_proxyauth_name_password(CURL *result)
+{
+#if LIBCURL_VERSION_NUM >= 0x071301
+ curl_easy_setopt(result, CURLOPT_PROXYUSERNAME,
+ proxy_auth.username);
+ curl_easy_setopt(result, CURLOPT_PROXYPASSWORD,
+ proxy_auth.password);
+#else
+ struct strbuf s = STRBUF_INIT;
+
+ strbuf_addstr_urlencode(&s, proxy_auth.username, 1);
+ strbuf_addch(&s, ':');
+ strbuf_addstr_urlencode(&s, proxy_auth.password, 1);
+ curl_proxyuserpwd = strbuf_detach(&s, NULL);
+ curl_easy_setopt(result, CURLOPT_PROXYUSERPWD, curl_proxyuserpwd);
+#endif
+}
+
+static void init_curl_proxy_auth(CURL *result)
+{
+ if (proxy_auth.username) {
+ if (!proxy_auth.password)
+ credential_fill(&proxy_auth);
+ set_proxyauth_name_password(result);
+ }
+
+ var_override(&http_proxy_authmethod, getenv("GIT_HTTP_PROXY_AUTHMETHOD"));
+
+#if LIBCURL_VERSION_NUM >= 0x070a07 /* CURLOPT_PROXYAUTH and CURLAUTH_ANY */
+ if (http_proxy_authmethod) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(proxy_authmethods); i++) {
+ if (!strcmp(http_proxy_authmethod, proxy_authmethods[i].name)) {
+ curl_easy_setopt(result, CURLOPT_PROXYAUTH,
+ proxy_authmethods[i].curlauth_param);
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(proxy_authmethods)) {
+ warning("unsupported proxy authentication method %s: using anyauth",
+ http_proxy_authmethod);
+ curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
+ }
+ }
+ else
+ curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
+#endif
+}
+
static int has_cert_password(void)
{
if (ssl_cert == NULL || ssl_cert_password_required != 1)
rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len);
if (rc < 0)
- warning("unable to set SO_KEEPALIVE on socket %s",
- strerror(errno));
+ warning_errno("unable to set SO_KEEPALIVE on socket");
return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
}
}
#endif
+static void redact_sensitive_header(struct strbuf *header)
+{
+ const char *sensitive_header;
+
+ if (skip_prefix(header->buf, "Authorization:", &sensitive_header) ||
+ skip_prefix(header->buf, "Proxy-Authorization:", &sensitive_header)) {
+ /* The first token is the type, which is OK to log */
+ while (isspace(*sensitive_header))
+ sensitive_header++;
+ while (*sensitive_header && !isspace(*sensitive_header))
+ sensitive_header++;
+ /* Everything else is opaque and possibly sensitive */
+ strbuf_setlen(header, sensitive_header - header->buf);
+ strbuf_addstr(header, " <redacted>");
+ }
+}
+
+static void curl_dump_header(const char *text, unsigned char *ptr, size_t size, int hide_sensitive_header)
+{
+ struct strbuf out = STRBUF_INIT;
+ struct strbuf **headers, **header;
+
+ strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n",
+ text, (long)size, (long)size);
+ trace_strbuf(&trace_curl, &out);
+ strbuf_reset(&out);
+ strbuf_add(&out, ptr, size);
+ headers = strbuf_split_max(&out, '\n', 0);
+
+ for (header = headers; *header; header++) {
+ if (hide_sensitive_header)
+ redact_sensitive_header(*header);
+ strbuf_insert((*header), 0, text, strlen(text));
+ strbuf_insert((*header), strlen(text), ": ", 2);
+ strbuf_rtrim((*header));
+ strbuf_addch((*header), '\n');
+ trace_strbuf(&trace_curl, (*header));
+ }
+ strbuf_list_free(headers);
+ strbuf_release(&out);
+}
+
+static void curl_dump_data(const char *text, unsigned char *ptr, size_t size)
+{
+ size_t i;
+ struct strbuf out = STRBUF_INIT;
+ unsigned int width = 60;
+
+ strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n",
+ text, (long)size, (long)size);
+ trace_strbuf(&trace_curl, &out);
+
+ for (i = 0; i < size; i += width) {
+ size_t w;
+
+ strbuf_reset(&out);
+ strbuf_addf(&out, "%s: ", text);
+ for (w = 0; (w < width) && (i + w < size); w++) {
+ unsigned char ch = ptr[i + w];
+
+ strbuf_addch(&out,
+ (ch >= 0x20) && (ch < 0x80)
+ ? ch : '.');
+ }
+ strbuf_addch(&out, '\n');
+ trace_strbuf(&trace_curl, &out);
+ }
+ strbuf_release(&out);
+}
+
+static int curl_trace(CURL *handle, curl_infotype type, char *data, size_t size, void *userp)
+{
+ const char *text;
+ enum { NO_FILTER = 0, DO_FILTER = 1 };
+
+ switch (type) {
+ case CURLINFO_TEXT:
+ trace_printf_key(&trace_curl, "== Info: %s", data);
+ default: /* we ignore unknown types by default */
+ return 0;
+
+ case CURLINFO_HEADER_OUT:
+ text = "=> Send header";
+ curl_dump_header(text, (unsigned char *)data, size, DO_FILTER);
+ break;
+ case CURLINFO_DATA_OUT:
+ text = "=> Send data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ break;
+ case CURLINFO_SSL_DATA_OUT:
+ text = "=> Send SSL data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ break;
+ case CURLINFO_HEADER_IN:
+ text = "<= Recv header";
+ curl_dump_header(text, (unsigned char *)data, size, NO_FILTER);
+ break;
+ case CURLINFO_DATA_IN:
+ text = "<= Recv data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ break;
+ case CURLINFO_SSL_DATA_IN:
+ text = "<= Recv SSL data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ break;
+ }
+ return 0;
+}
+
+void setup_curl_trace(CURL *handle)
+{
+ if (!trace_want(&trace_curl))
+ return;
+ curl_easy_setopt(handle, CURLOPT_VERBOSE, 1L);
+ curl_easy_setopt(handle, CURLOPT_DEBUGFUNCTION, curl_trace);
+ curl_easy_setopt(handle, CURLOPT_DEBUGDATA, NULL);
+}
+
+static long get_curl_allowed_protocols(int from_user)
+{
+ long allowed_protocols = 0;
+
+ if (is_transport_allowed("http", from_user))
+ allowed_protocols |= CURLPROTO_HTTP;
+ if (is_transport_allowed("https", from_user))
+ allowed_protocols |= CURLPROTO_HTTPS;
+ if (is_transport_allowed("ftp", from_user))
+ allowed_protocols |= CURLPROTO_FTP;
+ if (is_transport_allowed("ftps", from_user))
+ allowed_protocols |= CURLPROTO_FTPS;
+
+ return allowed_protocols;
+}
+
static CURL *get_curl_handle(void)
{
CURL *result = curl_easy_init();
- long allowed_protocols = 0;
if (!result)
die("curl_easy_init failed");
curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
#endif
+#if LIBCURL_VERSION_NUM >= 0x071600
+ if (curl_deleg) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(curl_deleg_levels); i++) {
+ if (!strcmp(curl_deleg, curl_deleg_levels[i].name)) {
+ curl_easy_setopt(result, CURLOPT_GSSAPI_DELEGATION,
+ curl_deleg_levels[i].curl_deleg_param);
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(curl_deleg_levels))
+ warning("Unknown delegation method '%s': using default",
+ curl_deleg);
+ }
+#endif
+
if (http_proactive_auth)
init_curl_http_auth(result);
#if LIBCURL_VERSION_NUM >= 0x070908
if (ssl_capath != NULL)
curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
+#endif
+#if LIBCURL_VERSION_NUM >= 0x072c00
+ if (ssl_pinnedkey != NULL)
+ curl_easy_setopt(result, CURLOPT_PINNEDPUBLICKEY, ssl_pinnedkey);
#endif
if (ssl_cainfo != NULL)
curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
curl_low_speed_time);
}
- curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt(result, CURLOPT_MAXREDIRS, 20);
#if LIBCURL_VERSION_NUM >= 0x071301
curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
curl_easy_setopt(result, CURLOPT_POST301, 1);
#endif
#if LIBCURL_VERSION_NUM >= 0x071304
- if (is_transport_allowed("http"))
- allowed_protocols |= CURLPROTO_HTTP;
- if (is_transport_allowed("https"))
- allowed_protocols |= CURLPROTO_HTTPS;
- if (is_transport_allowed("ftp"))
- allowed_protocols |= CURLPROTO_FTP;
- if (is_transport_allowed("ftps"))
- allowed_protocols |= CURLPROTO_FTPS;
- curl_easy_setopt(result, CURLOPT_REDIR_PROTOCOLS, allowed_protocols);
+ curl_easy_setopt(result, CURLOPT_REDIR_PROTOCOLS,
+ get_curl_allowed_protocols(0));
+ curl_easy_setopt(result, CURLOPT_PROTOCOLS,
+ get_curl_allowed_protocols(-1));
#else
- if (transport_restrict_protocols())
- warning("protocol restrictions not applied to curl redirects because\n"
- "your curl version is too old (>= 7.19.4)");
+ warning("protocol restrictions not applied to curl redirects because\n"
+ "your curl version is too old (>= 7.19.4)");
#endif
-
if (getenv("GIT_CURL_VERBOSE"))
- curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
+ curl_easy_setopt(result, CURLOPT_VERBOSE, 1L);
+ setup_curl_trace(result);
curl_easy_setopt(result, CURLOPT_USERAGENT,
user_agent ? user_agent : git_user_agent());
curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY);
#endif
- if (curl_http_proxy) {
- curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
+ /*
+ * CURL also examines these variables as a fallback; but we need to query
+ * them here in order to decide whether to prompt for missing password (cf.
+ * init_curl_proxy_auth()).
+ *
+ * Unlike many other common environment variables, these are historically
+ * lowercase only. It appears that CURL did not know this and implemented
+ * only uppercase variants, which was later corrected to take both - with
+ * the exception of http_proxy, which is lowercase only also in CURL. As
+ * the lowercase versions are the historical quasi-standard, they take
+ * precedence here, as in CURL.
+ */
+ if (!curl_http_proxy) {
+ if (http_auth.protocol && !strcmp(http_auth.protocol, "https")) {
+ var_override(&curl_http_proxy, getenv("HTTPS_PROXY"));
+ var_override(&curl_http_proxy, getenv("https_proxy"));
+ } else {
+ var_override(&curl_http_proxy, getenv("http_proxy"));
+ }
+ if (!curl_http_proxy) {
+ var_override(&curl_http_proxy, getenv("ALL_PROXY"));
+ var_override(&curl_http_proxy, getenv("all_proxy"));
+ }
+ }
+
+ if (curl_http_proxy && curl_http_proxy[0] == '\0') {
+ /*
+ * Handle case with the empty http.proxy value here to keep
+ * common code clean.
+ * NB: empty option disables proxying at all.
+ */
+ curl_easy_setopt(result, CURLOPT_PROXY, "");
+ } else if (curl_http_proxy) {
#if LIBCURL_VERSION_NUM >= 0x071800
- if (starts_with(curl_http_proxy, "socks5"))
+ if (starts_with(curl_http_proxy, "socks5h"))
+ curl_easy_setopt(result,
+ CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME);
+ else if (starts_with(curl_http_proxy, "socks5"))
curl_easy_setopt(result,
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
else if (starts_with(curl_http_proxy, "socks4a"))
curl_easy_setopt(result,
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
#endif
- }
-#if LIBCURL_VERSION_NUM >= 0x070a07
- curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
+ if (strstr(curl_http_proxy, "://"))
+ credential_from_url(&proxy_auth, curl_http_proxy);
+ else {
+ struct strbuf url = STRBUF_INIT;
+ strbuf_addf(&url, "http://%s", curl_http_proxy);
+ credential_from_url(&proxy_auth, url.buf);
+ strbuf_release(&url);
+ }
+
+ if (!proxy_auth.host)
+ die("Invalid proxy URL '%s'", curl_http_proxy);
+
+ curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
+#if LIBCURL_VERSION_NUM >= 0x071304
+ var_override(&curl_no_proxy, getenv("NO_PROXY"));
+ var_override(&curl_no_proxy, getenv("no_proxy"));
+ curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy);
#endif
+ }
+ init_curl_proxy_auth(result);
set_curl_keepalive(result);
if (remote && remote->http_proxy)
curl_http_proxy = xstrdup(remote->http_proxy);
- pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
- no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
+ if (remote)
+ var_override(&http_proxy_authmethod, remote->http_proxy_authmethod);
+
+ pragma_header = curl_slist_append(http_copy_default_headers(),
+ "Pragma: no-cache");
+ no_pragma_header = curl_slist_append(http_copy_default_headers(),
+ "Pragma:");
#ifdef USE_CURL_MULTI
{
while (slot != NULL) {
struct active_request_slot *next = slot->next;
if (slot->curl != NULL) {
-#ifdef USE_CURL_MULTI
- curl_multi_remove_handle(curlm, slot->curl);
-#endif
+ xmulti_remove_handle(slot);
curl_easy_cleanup(slot->curl);
}
free(slot);
#endif
curl_global_cleanup();
+ curl_slist_free_all(extra_http_headers);
+ extra_http_headers = NULL;
+
curl_slist_free_all(pragma_header);
pragma_header = NULL;
curl_http_proxy = NULL;
}
+ if (proxy_auth.password) {
+ memset(proxy_auth.password, 0, strlen(proxy_auth.password));
+ free(proxy_auth.password);
+ proxy_auth.password = NULL;
+ }
+
+ free((void *)curl_proxyuserpwd);
+ curl_proxyuserpwd = NULL;
+
+ free((void *)http_proxy_authmethod);
+ http_proxy_authmethod = NULL;
+
if (cert_auth.password != NULL) {
memset(cert_auth.password, 0, strlen(cert_auth.password));
free(cert_auth.password);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1);
+ curl_easy_setopt(slot->curl, CURLOPT_RANGE, NULL);
+
+ /*
+ * Default following to off unless "ALWAYS" is configured; this gives
+ * callers a sane starting point, and they can tweak for individual
+ * HTTP_FOLLOW_* cases themselves.
+ */
+ if (http_follow_config == HTTP_FOLLOW_ALWAYS)
+ curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 1);
+ else
+ curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 0);
+
+#if LIBCURL_VERSION_NUM >= 0x070a08
+ curl_easy_setopt(slot->curl, CURLOPT_IPRESOLVE, git_curl_ipresolve);
+#endif
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods);
#endif
- if (http_auth.password)
+ if (http_auth.password || curl_empty_auth_enabled())
init_curl_http_auth(slot->curl);
return slot;
if (curlm_result != CURLM_OK &&
curlm_result != CURLM_CALL_MULTI_PERFORM) {
+ warning("curl_multi_add_handle failed: %s",
+ curl_multi_strerror(curlm_result));
active_requests--;
slot->in_use = 0;
return 0;
static void release_active_slot(struct active_request_slot *slot)
{
closedown_active_slot(slot);
- if (slot->curl && curl_session_count > min_curl_sessions) {
-#ifdef USE_CURL_MULTI
- curl_multi_remove_handle(curlm, slot->curl);
-#endif
- curl_easy_cleanup(slot->curl);
- slot->curl = NULL;
- curl_session_count--;
+ if (slot->curl) {
+ xmulti_remove_handle(slot);
+ if (curl_session_count > min_curl_sessions) {
+ curl_easy_cleanup(slot->curl);
+ slot->curl = NULL;
+ curl_session_count--;
+ }
}
#ifdef USE_CURL_MULTI
fill_active_slots();
strbuf_addf(buf, "objects/%.*s/", 2, hex);
if (!only_two_digit_prefix)
- strbuf_addf(buf, "%s", hex+2);
+ strbuf_addstr(buf, hex + 2);
}
char *get_remote_object_url(const char *url, const char *hex,
* If we see a failing http code with CURLE_OK, we have turned off
* FAILONERROR (to keep the server's custom error response), and should
* translate the code into failure here.
+ *
+ * Likewise, if we see a redirect (30x code), that means we turned off
+ * redirect-following, and we should treat the result as an error.
*/
if (results->curl_result == CURLE_OK &&
- results->http_code >= 400) {
+ results->http_code >= 300) {
results->curl_result = CURLE_HTTP_RETURNED_ERROR;
/*
* Normally curl will already have put the "reason phrase"
* FAILONERROR it is lost, so we can give only the numeric
* status code.
*/
- snprintf(curl_errorstr, sizeof(curl_errorstr),
- "The requested URL returned error: %ld",
- results->http_code);
+ xsnprintf(curl_errorstr, sizeof(curl_errorstr),
+ "The requested URL returned error: %ld",
+ results->http_code);
}
if (results->curl_result == CURLE_OK) {
credential_approve(&http_auth);
+ if (proxy_auth.password)
+ credential_approve(&proxy_auth);
return HTTP_OK;
} else if (missing_target(results))
return HTTP_MISSING_TARGET;
} else {
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE;
+ if (results->auth_avail) {
+ http_auth_methods &= results->auth_avail;
+ http_auth_methods_restricted = 1;
+ }
#endif
return HTTP_REAUTH;
}
} else {
+ if (results->http_connectcode == 407)
+ credential_reject(&proxy_auth);
#if LIBCURL_VERSION_NUM >= 0x070c00
if (!curl_errorstr[0])
strlcpy(curl_errorstr,
{
slot->results = results;
if (!start_active_slot(slot)) {
- snprintf(curl_errorstr, sizeof(curl_errorstr),
- "failed to start HTTP request");
+ xsnprintf(curl_errorstr, sizeof(curl_errorstr),
+ "failed to start HTTP request");
return HTTP_START_FAILED;
}
return handle_curl_result(results);
}
+struct curl_slist *http_copy_default_headers(void)
+{
+ struct curl_slist *headers = NULL, *h;
+
+ for (h = extra_http_headers; h; h = h->next)
+ headers = curl_slist_append(headers, h->data);
+
+ return headers;
+}
+
static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf)
{
char *ptr;
decimal_places++, max_q *= 10)
;
- sprintf(q_format, ";q=0.%%0%dd", decimal_places);
+ xsnprintf(q_format, sizeof(q_format), ";q=0.%%0%dd", decimal_places);
strbuf_addstr(buf, "Accept-Language: ");
return cached_accept_language;
}
+static void http_opt_request_remainder(CURL *curl, off_t pos)
+{
+ char buf[128];
+ xsnprintf(buf, sizeof(buf), "%"PRIuMAX"-", (uintmax_t)pos);
+ curl_easy_setopt(curl, CURLOPT_RANGE, buf);
+}
+
/* http_request() targets */
#define HTTP_REQUEST_STRBUF 0
#define HTTP_REQUEST_FILE 1
{
struct active_request_slot *slot;
struct slot_results results;
- struct curl_slist *headers = NULL;
+ struct curl_slist *headers = http_copy_default_headers();
struct strbuf buf = STRBUF_INIT;
const char *accept_language;
int ret;
curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
if (target == HTTP_REQUEST_FILE) {
- long posn = ftell(result);
+ off_t posn = ftello(result);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite);
- if (posn > 0) {
- strbuf_addf(&buf, "Range: bytes=%ld-", posn);
- headers = curl_slist_append(headers, buf.buf);
- strbuf_reset(&buf);
- }
+ if (posn > 0)
+ http_opt_request_remainder(slot->curl, posn);
} else
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite_buffer);
strbuf_addstr(&buf, " no-cache");
if (options && options->keep_error)
curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
+ if (options && options->initial_request &&
+ http_follow_config == HTTP_FOLLOW_INITIAL)
+ curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 1);
headers = curl_slist_append(headers, buf.buf);
*
* Note that this assumes a sane redirect scheme. It's entirely possible
* in the example above to end up at a URL that does not even end in
- * "info/refs". In such a case we simply punt, as there is not much we can
- * do (and such a scheme is unlikely to represent a real git repository,
- * which means we are likely about to abort anyway).
+ * "info/refs". In such a case we die. There's not much we can do, such a
+ * scheme is unlikely to represent a real git repository, and failing to
+ * rewrite the base opens options for malicious redirects to do funny things.
*/
static int update_url_from_redirect(struct strbuf *base,
const char *asked,
const struct strbuf *got)
{
const char *tail;
- size_t tail_len;
+ size_t new_len;
if (!strcmp(asked, got->buf))
return 0;
die("BUG: update_url_from_redirect: %s is not a superset of %s",
asked, base->buf);
- tail_len = strlen(tail);
-
- if (got->len < tail_len ||
- strcmp(tail, got->buf + got->len - tail_len))
- return 0; /* insane redirect scheme */
+ new_len = got->len;
+ if (!strip_suffix_mem(got->buf, &new_len, tail))
+ die(_("unable to update url base from redirection:\n"
+ " asked for: %s\n"
+ " redirect: %s"),
+ asked, got->buf);
strbuf_reset(base);
- strbuf_add(base, got->buf, got->len - tail_len);
+ strbuf_add(base, got->buf, new_len);
+
return 1;
}
{
int ret = http_request(url, result, target, options);
+ if (ret != HTTP_OK && ret != HTTP_REAUTH)
+ return ret;
+
if (options && options->effective_url && options->base_url) {
if (update_url_from_redirect(options->base_url,
url, options->effective_url)) {
if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) {
strbuf_rtrim(&buffer);
if (buffer.len == 40)
- ret = get_sha1_hex(buffer.buf, ref->old_sha1);
+ ret = get_oid_hex(buffer.buf, &ref->old_oid);
else if (starts_with(buffer.buf, "ref: ")) {
ref->symref = xstrdup(buffer.buf + 5);
ret = 0;
fclose(preq->packfile);
preq->packfile = NULL;
}
- if (preq->range_header != NULL) {
- curl_slist_free_all(preq->range_header);
- preq->range_header = NULL;
- }
preq->slot = NULL;
free(preq->url);
free(preq);
struct packed_git **lst;
struct packed_git *p = preq->target;
char *tmp_idx;
+ size_t len;
struct child_process ip = CHILD_PROCESS_INIT;
const char *ip_argv[8];
lst = &((*lst)->next);
*lst = (*lst)->next;
- tmp_idx = xstrdup(preq->tmpfile);
- strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"),
- ".idx.temp");
+ if (!strip_suffix(preq->tmpfile, ".pack.temp", &len))
+ die("BUG: pack tmpfile does not end in .pack.temp?");
+ tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile);
ip_argv[0] = "index-pack";
ip_argv[1] = "-o";
struct http_pack_request *new_http_pack_request(
struct packed_git *target, const char *base_url)
{
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
+ off_t prev_posn = 0;
struct strbuf buf = STRBUF_INIT;
struct http_pack_request *preq;
* If there is data present from a previous transfer attempt,
* resume where it left off
*/
- prev_posn = ftell(preq->packfile);
+ prev_posn = ftello(preq->packfile);
if (prev_posn>0) {
if (http_is_verbose)
fprintf(stderr,
- "Resuming fetch of pack %s at byte %ld\n",
- sha1_to_hex(target->sha1), prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- preq->range_header = curl_slist_append(NULL, range);
- curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
- preq->range_header);
+ "Resuming fetch of pack %s at byte %"PRIuMAX"\n",
+ sha1_to_hex(target->sha1), (uintmax_t)prev_posn);
+ http_opt_request_remainder(preq->slot->curl, prev_posn);
}
return preq;
unsigned char expn[4096];
size_t size = eltsize * nmemb;
int posn = 0;
- struct http_object_request *freq =
- (struct http_object_request *)data;
+ struct http_object_request *freq = data;
+ struct active_request_slot *slot = freq->slot;
+
+ if (slot) {
+ CURLcode c = curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE,
+ &slot->http_code);
+ if (c != CURLE_OK)
+ die("BUG: curl_easy_getinfo for HTTP code failed: %s",
+ curl_easy_strerror(c));
+ if (slot->http_code >= 300)
+ return size;
+ }
+
do {
ssize_t retval = xwrite(freq->localfile,
(char *) ptr + posn, size - posn);
int prevlocal;
char prev_buf[PREV_BUF_SIZE];
ssize_t prev_read = 0;
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
- struct curl_slist *range_header = NULL;
+ off_t prev_posn = 0;
struct http_object_request *freq;
freq = xcalloc(1, sizeof(*freq));
}
if (freq->localfile < 0) {
- error("Couldn't create temporary file %s: %s",
- freq->tmpfile, strerror(errno));
+ error_errno("Couldn't create temporary file %s", freq->tmpfile);
goto abort;
}
prev_posn = 0;
lseek(freq->localfile, 0, SEEK_SET);
if (ftruncate(freq->localfile, 0) < 0) {
- error("Couldn't truncate temporary file %s: %s",
- freq->tmpfile, strerror(errno));
+ error_errno("Couldn't truncate temporary file %s",
+ freq->tmpfile);
goto abort;
}
}
freq->slot = get_active_slot();
curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
+ curl_easy_setopt(freq->slot->curl, CURLOPT_FAILONERROR, 0);
curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
if (prev_posn>0) {
if (http_is_verbose)
fprintf(stderr,
- "Resuming fetch of object %s at byte %ld\n",
- hex, prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- range_header = curl_slist_append(range_header, range);
- curl_easy_setopt(freq->slot->curl,
- CURLOPT_HTTPHEADER, range_header);
+ "Resuming fetch of object %s at byte %"PRIuMAX"\n",
+ hex, (uintmax_t)prev_posn);
+ http_opt_request_remainder(freq->slot->curl, prev_posn);
}
return freq;