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-rw-r--r--http.c664
1 files changed, 526 insertions, 138 deletions
diff --git a/http.c b/http.c
index 69da4454d8..4162860ee3 100644
--- a/http.c
+++ b/http.c
@@ -1,5 +1,6 @@
#include "git-compat-util.h"
#include "http.h"
+#include "config.h"
#include "pack.h"
#include "sideband.h"
#include "run-command.h"
@@ -10,7 +11,14 @@
#include "pkt-line.h"
#include "gettext.h"
#include "transport.h"
-
+#include "packfile.h"
+#include "protocol.h"
+#include "string-list.h"
+#include "object-store.h"
+
+static struct trace_key trace_curl = TRACE_KEY_INIT(CURL);
+static int trace_curl_data = 1;
+static struct string_list cookies_to_redact = STRING_LIST_INIT_DUP;
#if LIBCURL_VERSION_NUM >= 0x070a08
long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
#else
@@ -18,7 +26,7 @@ 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
@@ -55,6 +63,9 @@ static struct {
{ "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
{ "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
#endif
+#if LIBCURL_VERSION_NUM >= 0x073400
+ { "tlsv1.3", CURL_SSLVERSION_TLSv1_3 },
+#endif
};
#if LIBCURL_VERSION_NUM >= 0x070903
static const char *ssl_key;
@@ -62,6 +73,9 @@ static const char *ssl_key;
#if LIBCURL_VERSION_NUM >= 0x070908
static const char *ssl_capath;
#endif
+#if LIBCURL_VERSION_NUM >= 0x071304
+static const char *curl_no_proxy;
+#endif
#if LIBCURL_VERSION_NUM >= 0x072c00
static const char *ssl_pinnedkey;
#endif
@@ -70,7 +84,6 @@ 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;
@@ -89,6 +102,18 @@ static struct {
* here, too
*/
};
+#ifdef CURLGSSAPI_DELEGATION_FLAG
+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;
@@ -96,7 +121,9 @@ 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;
+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 */
@@ -110,10 +137,19 @@ static struct credential cert_auth = CREDENTIAL_INIT;
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;
@@ -199,6 +235,13 @@ static void finish_active_slot(struct active_request_slot *slot)
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)
{
@@ -214,7 +257,7 @@ 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 {
@@ -240,10 +283,10 @@ static int http_options(const char *var, const char *value, void *cb)
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);
+ return git_config_pathname(&ssl_cert, var, value);
#if LIBCURL_VERSION_NUM >= 0x070903
if (!strcmp("http.sslkey", var))
- return git_config_string(&ssl_key, var, value);
+ return git_config_pathname(&ssl_key, var, value);
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
if (!strcmp("http.sslcapath", var))
@@ -293,14 +336,16 @@ static int http_options(const char *var, const char *value, void *cb)
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;
@@ -310,10 +355,22 @@ static int http_options(const char *var, const char *value, void *cb)
return git_config_string(&user_agent, var, value);
if (!strcmp("http.emptyauth", var)) {
- curl_empty_auth = git_config_bool(var, value);
+ 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)) {
+#ifdef CURLGSSAPI_DELEGATION_FLAG
+ 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);
@@ -323,14 +380,64 @@ static int http_options(const char *var, const char *value, void *cb)
#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 (curl_empty_auth)
+ if (!http_auth.username || !*http_auth.username) {
+ if (curl_empty_auth_enabled())
curl_easy_setopt(result, CURLOPT_USERPWD, ":");
return;
}
@@ -446,8 +553,7 @@ static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type)
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 */
}
@@ -464,10 +570,202 @@ static void set_curl_keepalive(CURL *c)
}
#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>");
+ } else if (cookies_to_redact.nr &&
+ skip_prefix(header->buf, "Cookie:", &sensitive_header)) {
+ struct strbuf redacted_header = STRBUF_INIT;
+ char *cookie;
+
+ while (isspace(*sensitive_header))
+ sensitive_header++;
+
+ /*
+ * The contents of header starting from sensitive_header will
+ * subsequently be overridden, so it is fine to mutate this
+ * string (hence the assignment to "char *").
+ */
+ cookie = (char *) sensitive_header;
+
+ while (cookie) {
+ char *equals;
+ char *semicolon = strstr(cookie, "; ");
+ if (semicolon)
+ *semicolon = 0;
+ equals = strchrnul(cookie, '=');
+ if (!equals) {
+ /* invalid cookie, just append and continue */
+ strbuf_addstr(&redacted_header, cookie);
+ continue;
+ }
+ *equals = 0; /* temporarily set to NUL for lookup */
+ if (string_list_lookup(&cookies_to_redact, cookie)) {
+ strbuf_addstr(&redacted_header, cookie);
+ strbuf_addstr(&redacted_header, "=<redacted>");
+ } else {
+ *equals = '=';
+ strbuf_addstr(&redacted_header, cookie);
+ }
+ if (semicolon) {
+ /*
+ * There are more cookies. (Or, for some
+ * reason, the input string ends in "; ".)
+ */
+ strbuf_addstr(&redacted_header, "; ");
+ cookie = semicolon + strlen("; ");
+ } else {
+ cookie = NULL;
+ }
+ }
+
+ strbuf_setlen(header, sensitive_header - header->buf);
+ strbuf_addbuf(header, &redacted_header);
+ }
+}
+
+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);
+ break;
+ case CURLINFO_HEADER_OUT:
+ text = "=> Send header";
+ curl_dump_header(text, (unsigned char *)data, size, DO_FILTER);
+ break;
+ case CURLINFO_DATA_OUT:
+ if (trace_curl_data) {
+ text = "=> Send data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ }
+ break;
+ case CURLINFO_SSL_DATA_OUT:
+ if (trace_curl_data) {
+ 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:
+ if (trace_curl_data) {
+ text = "<= Recv data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ }
+ break;
+ case CURLINFO_SSL_DATA_IN:
+ if (trace_curl_data) {
+ text = "<= Recv SSL data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ }
+ break;
+
+ default: /* we ignore unknown types by default */
+ return 0;
+ }
+ 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);
+}
+
+#ifdef CURLPROTO_HTTP
+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;
+}
+#endif
+
static CURL *get_curl_handle(void)
{
CURL *result = curl_easy_init();
- long allowed_protocols = 0;
if (!result)
die("curl_easy_init failed");
@@ -489,6 +787,22 @@ static CURL *get_curl_handle(void)
curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
#endif
+#ifdef CURLGSSAPI_DELEGATION_FLAG
+ 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);
@@ -540,31 +854,31 @@ static CURL *get_curl_handle(void)
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);
#elif LIBCURL_VERSION_NUM >= 0x071101
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);
+#ifdef CURLPROTO_HTTP
+ 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);
+ if (getenv("GIT_TRACE_CURL_NO_DATA"))
+ trace_curl_data = 0;
+ if (getenv("GIT_REDACT_COOKIES")) {
+ string_list_split(&cookies_to_redact,
+ getenv("GIT_REDACT_COOKIES"), ',', -1);
+ string_list_sort(&cookies_to_redact);
+ }
curl_easy_setopt(result, CURLOPT_USERAGENT,
user_agent ? user_agent : git_user_agent());
@@ -590,7 +904,7 @@ static CURL *get_curl_handle(void)
* precedence here, as in CURL.
*/
if (!curl_http_proxy) {
- if (!strcmp(http_auth.protocol, "https")) {
+ 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 {
@@ -602,10 +916,19 @@ static CURL *get_curl_handle(void)
}
}
- if (curl_http_proxy) {
- curl_easy_setopt(result, CURLOPT_PROXY, curl_http_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"))
@@ -615,6 +938,11 @@ static CURL *get_curl_handle(void)
curl_easy_setopt(result,
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
#endif
+#if LIBCURL_VERSION_NUM >= 0x073400
+ else if (starts_with(curl_http_proxy, "https"))
+ curl_easy_setopt(result,
+ CURLOPT_PROXYTYPE, CURLPROXY_HTTPS);
+#endif
if (strstr(curl_http_proxy, "://"))
credential_from_url(&proxy_auth, curl_http_proxy);
else {
@@ -624,6 +952,9 @@ static CURL *get_curl_handle(void)
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"));
@@ -675,8 +1006,10 @@ void http_init(struct remote *remote, const char *url, int proactive_auth)
if (remote)
var_override(&http_proxy_authmethod, remote->http_proxy_authmethod);
- pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
- no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
+ 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
{
@@ -743,9 +1076,7 @@ void http_cleanup(void)
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);
@@ -762,6 +1093,9 @@ void http_cleanup(void)
#endif
curl_global_cleanup();
+ curl_slist_free_all(extra_http_headers);
+ extra_http_headers = NULL;
+
curl_slist_free_all(pragma_header);
pragma_header = NULL;
@@ -775,8 +1109,7 @@ void http_cleanup(void)
if (proxy_auth.password) {
memset(proxy_auth.password, 0, strlen(proxy_auth.password));
- free(proxy_auth.password);
- proxy_auth.password = NULL;
+ FREE_AND_NULL(proxy_auth.password);
}
free((void *)curl_proxyuserpwd);
@@ -787,13 +1120,11 @@ void http_cleanup(void)
if (cert_auth.password != NULL) {
memset(cert_auth.password, 0, strlen(cert_auth.password));
- free(cert_auth.password);
- cert_auth.password = NULL;
+ FREE_AND_NULL(cert_auth.password);
}
ssl_cert_password_required = 0;
- free(cached_accept_language);
- cached_accept_language = NULL;
+ FREE_AND_NULL(cached_accept_language);
}
struct active_request_slot *get_active_slot(void)
@@ -861,13 +1192,23 @@ struct active_request_slot *get_active_slot(void)
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 || curl_empty_auth)
+ if (http_auth.password || curl_empty_auth_enabled())
init_curl_http_auth(slot->curl);
return slot;
@@ -881,6 +1222,8 @@ int start_active_slot(struct active_request_slot *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;
@@ -906,14 +1249,14 @@ static struct fill_chain *fill_cfg;
void add_fill_function(void *data, int (*fill)(void *))
{
- struct fill_chain *new = xmalloc(sizeof(*new));
+ struct fill_chain *new_fill = xmalloc(sizeof(*new_fill));
struct fill_chain **linkp = &fill_cfg;
- new->data = data;
- new->fill = fill;
- new->next = NULL;
+ new_fill->data = data;
+ new_fill->fill = fill;
+ new_fill->next = NULL;
while (*linkp)
linkp = &(*linkp)->next;
- *linkp = new;
+ *linkp = new_fill;
}
void fill_active_slots(void)
@@ -1020,13 +1363,13 @@ void run_active_slot(struct active_request_slot *slot)
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();
@@ -1084,7 +1427,7 @@ void append_remote_object_url(struct strbuf *buf, const char *url,
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,
@@ -1101,9 +1444,12 @@ static int handle_curl_result(struct slot_results *results)
* 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"
@@ -1111,9 +1457,9 @@ static int handle_curl_result(struct slot_results *results)
* 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) {
@@ -1130,6 +1476,10 @@ static int handle_curl_result(struct slot_results *results)
} 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;
}
@@ -1151,8 +1501,8 @@ int run_one_slot(struct active_request_slot *slot,
{
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;
}
@@ -1160,6 +1510,16 @@ int run_one_slot(struct active_request_slot *slot,
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;
@@ -1377,7 +1737,7 @@ static int http_request(const char *url,
{
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;
@@ -1412,12 +1772,23 @@ static int http_request(const char *url,
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);
+ /* Add additional headers here */
+ if (options && options->extra_headers) {
+ const struct string_list_item *item;
+ for_each_string_list_item(item, options->extra_headers) {
+ headers = curl_slist_append(headers, item->string);
+ }
+ }
+
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
- curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
+ curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
ret = run_one_slot(slot, &results);
@@ -1460,32 +1831,34 @@ static int http_request(const char *url,
*
* 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;
if (!skip_prefix(asked, base->buf, &tail))
- die("BUG: update_url_from_redirect: %s is not a superset of %s",
+ 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;
}
@@ -1495,6 +1868,9 @@ static int http_request_reauth(const char *url,
{
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)) {
@@ -1518,7 +1894,7 @@ static int http_request_reauth(const char *url,
strbuf_reset(result);
break;
default:
- die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
+ BUG("HTTP_KEEP_ERROR is only supported with strbufs");
}
}
@@ -1608,8 +1984,7 @@ static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
if (http_get_file(url, tmp, NULL) != HTTP_OK) {
error("Unable to get pack index %s", url);
- free(tmp);
- tmp = NULL;
+ FREE_AND_NULL(tmp);
}
free(url);
@@ -1663,7 +2038,8 @@ int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
int ret = 0, i = 0;
char *url, *data;
struct strbuf buf = STRBUF_INIT;
- unsigned char sha1[20];
+ unsigned char hash[GIT_MAX_RAWSZ];
+ const unsigned hexsz = the_hash_algo->hexsz;
end_url_with_slash(&buf, base_url);
strbuf_addstr(&buf, "objects/info/packs");
@@ -1679,13 +2055,13 @@ int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
switch (data[i]) {
case 'P':
i++;
- if (i + 52 <= buf.len &&
+ if (i + hexsz + 12 <= buf.len &&
starts_with(data + i, " pack-") &&
- starts_with(data + i + 46, ".pack\n")) {
- get_sha1_hex(data + i + 6, sha1);
- fetch_and_setup_pack_index(packs_head, sha1,
+ starts_with(data + i + hexsz + 6, ".pack\n")) {
+ get_sha1_hex(data + i + 6, hash);
+ fetch_and_setup_pack_index(packs_head, hash,
base_url);
- i += 51;
+ i += hexsz + 11;
break;
}
default:
@@ -1707,6 +2083,7 @@ void release_http_pack_request(struct http_pack_request *preq)
preq->packfile = NULL;
}
preq->slot = NULL;
+ strbuf_release(&preq->tmpfile);
free(preq->url);
free(preq);
}
@@ -1718,7 +2095,6 @@ int finish_http_pack_request(struct http_pack_request *preq)
char *tmp_idx;
size_t len;
struct child_process ip = CHILD_PROCESS_INIT;
- const char *ip_argv[8];
close_pack_index(p);
@@ -1730,23 +2106,19 @@ int finish_http_pack_request(struct http_pack_request *preq)
lst = &((*lst)->next);
*lst = (*lst)->next;
- 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";
- ip_argv[2] = tmp_idx;
- ip_argv[3] = preq->tmpfile;
- ip_argv[4] = NULL;
+ if (!strip_suffix(preq->tmpfile.buf, ".pack.temp", &len))
+ BUG("pack tmpfile does not end in .pack.temp?");
+ tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile.buf);
- ip.argv = ip_argv;
+ argv_array_push(&ip.args, "index-pack");
+ argv_array_pushl(&ip.args, "-o", tmp_idx, NULL);
+ argv_array_push(&ip.args, preq->tmpfile.buf);
ip.git_cmd = 1;
ip.no_stdin = 1;
ip.no_stdout = 1;
if (run_command(&ip)) {
- unlink(preq->tmpfile);
+ unlink(preq->tmpfile.buf);
unlink(tmp_idx);
free(tmp_idx);
return -1;
@@ -1754,13 +2126,13 @@ int finish_http_pack_request(struct http_pack_request *preq)
unlink(sha1_pack_index_name(p->sha1));
- if (finalize_object_file(preq->tmpfile, sha1_pack_name(p->sha1))
+ if (finalize_object_file(preq->tmpfile.buf, sha1_pack_name(p->sha1))
|| finalize_object_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
free(tmp_idx);
return -1;
}
- install_packed_git(p);
+ install_packed_git(the_repository, p);
free(tmp_idx);
return 0;
}
@@ -1773,6 +2145,7 @@ struct http_pack_request *new_http_pack_request(
struct http_pack_request *preq;
preq = xcalloc(1, sizeof(*preq));
+ strbuf_init(&preq->tmpfile, 0);
preq->target = target;
end_url_with_slash(&buf, base_url);
@@ -1780,12 +2153,11 @@ struct http_pack_request *new_http_pack_request(
sha1_to_hex(target->sha1));
preq->url = strbuf_detach(&buf, NULL);
- snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
- sha1_pack_name(target->sha1));
- preq->packfile = fopen(preq->tmpfile, "a");
+ strbuf_addf(&preq->tmpfile, "%s.temp", sha1_pack_name(target->sha1));
+ preq->packfile = fopen(preq->tmpfile.buf, "a");
if (!preq->packfile) {
error("Unable to open local file %s for pack",
- preq->tmpfile);
+ preq->tmpfile.buf);
goto abort;
}
@@ -1812,6 +2184,7 @@ struct http_pack_request *new_http_pack_request(
return preq;
abort:
+ strbuf_release(&preq->tmpfile);
free(preq->url);
free(preq);
return NULL;
@@ -1824,8 +2197,19 @@ static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
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)
+ 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);
@@ -1850,8 +2234,8 @@ struct http_object_request *new_http_object_request(const char *base_url,
unsigned char *sha1)
{
char *hex = sha1_to_hex(sha1);
- const char *filename;
- char prevfile[PATH_MAX];
+ struct strbuf filename = STRBUF_INIT;
+ struct strbuf prevfile = STRBUF_INIT;
int prevlocal;
char prev_buf[PREV_BUF_SIZE];
ssize_t prev_read = 0;
@@ -1859,40 +2243,41 @@ struct http_object_request *new_http_object_request(const char *base_url,
struct http_object_request *freq;
freq = xcalloc(1, sizeof(*freq));
+ strbuf_init(&freq->tmpfile, 0);
hashcpy(freq->sha1, sha1);
freq->localfile = -1;
- filename = sha1_file_name(sha1);
- snprintf(freq->tmpfile, sizeof(freq->tmpfile),
- "%s.temp", filename);
+ sha1_file_name(the_repository, &filename, sha1);
+ strbuf_addf(&freq->tmpfile, "%s.temp", filename.buf);
- snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
- unlink_or_warn(prevfile);
- rename(freq->tmpfile, prevfile);
- unlink_or_warn(freq->tmpfile);
+ strbuf_addf(&prevfile, "%s.prev", filename.buf);
+ unlink_or_warn(prevfile.buf);
+ rename(freq->tmpfile.buf, prevfile.buf);
+ unlink_or_warn(freq->tmpfile.buf);
+ strbuf_release(&filename);
if (freq->localfile != -1)
error("fd leakage in start: %d", freq->localfile);
- freq->localfile = open(freq->tmpfile,
+ freq->localfile = open(freq->tmpfile.buf,
O_WRONLY | O_CREAT | O_EXCL, 0666);
/*
* This could have failed due to the "lazy directory creation";
* try to mkdir the last path component.
*/
if (freq->localfile < 0 && errno == ENOENT) {
- char *dir = strrchr(freq->tmpfile, '/');
+ char *dir = strrchr(freq->tmpfile.buf, '/');
if (dir) {
*dir = 0;
- mkdir(freq->tmpfile, 0777);
+ mkdir(freq->tmpfile.buf, 0777);
*dir = '/';
}
- freq->localfile = open(freq->tmpfile,
+ freq->localfile = open(freq->tmpfile.buf,
O_WRONLY | O_CREAT | O_EXCL, 0666);
}
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.buf);
goto abort;
}
@@ -1906,7 +2291,7 @@ struct http_object_request *new_http_object_request(const char *base_url,
* If a previous temp file is present, process what was already
* fetched.
*/
- prevlocal = open(prevfile, O_RDONLY);
+ prevlocal = open(prevfile.buf, O_RDONLY);
if (prevlocal != -1) {
do {
prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
@@ -1923,7 +2308,8 @@ struct http_object_request *new_http_object_request(const char *base_url,
} while (prev_read > 0);
close(prevlocal);
}
- unlink_or_warn(prevfile);
+ unlink_or_warn(prevfile.buf);
+ strbuf_release(&prevfile);
/*
* Reset inflate/SHA1 if there was an error reading the previous temp
@@ -1937,8 +2323,8 @@ struct http_object_request *new_http_object_request(const char *base_url,
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.buf);
goto abort;
}
}
@@ -1947,6 +2333,7 @@ struct http_object_request *new_http_object_request(const char *base_url,
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);
@@ -1967,6 +2354,7 @@ struct http_object_request *new_http_object_request(const char *base_url,
return freq;
abort:
+ strbuf_release(&prevfile);
free(freq->url);
free(freq);
return NULL;
@@ -1984,6 +2372,7 @@ void process_http_object_request(struct http_object_request *freq)
int finish_http_object_request(struct http_object_request *freq)
{
struct stat st;
+ struct strbuf filename = STRBUF_INIT;
close(freq->localfile);
freq->localfile = -1;
@@ -1993,31 +2382,32 @@ int finish_http_object_request(struct http_object_request *freq)
if (freq->http_code == 416) {
warning("requested range invalid; we may already have all the data.");
} else if (freq->curl_result != CURLE_OK) {
- if (stat(freq->tmpfile, &st) == 0)
+ if (stat(freq->tmpfile.buf, &st) == 0)
if (st.st_size == 0)
- unlink_or_warn(freq->tmpfile);
+ unlink_or_warn(freq->tmpfile.buf);
return -1;
}
git_inflate_end(&freq->stream);
git_SHA1_Final(freq->real_sha1, &freq->c);
if (freq->zret != Z_STREAM_END) {
- unlink_or_warn(freq->tmpfile);
+ unlink_or_warn(freq->tmpfile.buf);
return -1;
}
if (hashcmp(freq->sha1, freq->real_sha1)) {
- unlink_or_warn(freq->tmpfile);
+ unlink_or_warn(freq->tmpfile.buf);
return -1;
}
- freq->rename =
- finalize_object_file(freq->tmpfile, sha1_file_name(freq->sha1));
+ sha1_file_name(the_repository, &filename, freq->sha1);
+ freq->rename = finalize_object_file(freq->tmpfile.buf, filename.buf);
+ strbuf_release(&filename);
return freq->rename;
}
void abort_http_object_request(struct http_object_request *freq)
{
- unlink_or_warn(freq->tmpfile);
+ unlink_or_warn(freq->tmpfile.buf);
release_http_object_request(freq);
}
@@ -2028,14 +2418,12 @@ void release_http_object_request(struct http_object_request *freq)
close(freq->localfile);
freq->localfile = -1;
}
- if (freq->url != NULL) {
- free(freq->url);
- freq->url = NULL;
- }
+ FREE_AND_NULL(freq->url);
if (freq->slot != NULL) {
freq->slot->callback_func = NULL;
freq->slot->callback_data = NULL;
release_active_slot(freq->slot);
freq->slot = NULL;
}
+ strbuf_release(&freq->tmpfile);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-13 01:23:56 +0000