diff options
Diffstat (limited to 'http.c')
-rw-r--r-- | http.c | 255 |
1 files changed, 229 insertions, 26 deletions
@@ -11,6 +11,7 @@ #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 @@ -89,6 +90,18 @@ static struct { * 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; @@ -114,6 +127,7 @@ static unsigned long http_auth_methods = CURLAUTH_ANY; 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 +213,13 @@ 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 +235,7 @@ 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 { @@ -314,6 +335,15 @@ static int http_options(const char *var, const char *value, void *cb) 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); @@ -323,6 +353,19 @@ 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; + } + /* Fall back on the default ones */ return git_default_config(var, value, cb); } @@ -446,8 +489,7 @@ 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 */ } @@ -464,6 +506,125 @@ 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>"); + } +} + +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 CURL *get_curl_handle(void) { CURL *result = curl_easy_init(); @@ -489,6 +650,22 @@ static CURL *get_curl_handle(void) 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); @@ -562,9 +739,9 @@ static CURL *get_curl_handle(void) 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()); @@ -590,7 +767,7 @@ 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 { @@ -678,8 +855,10 @@ 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 { @@ -746,9 +925,7 @@ 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); @@ -765,6 +942,9 @@ 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; @@ -884,6 +1064,8 @@ 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; @@ -1023,13 +1205,13 @@ 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(); @@ -1087,7 +1269,7 @@ 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, @@ -1163,6 +1345,16 @@ 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; @@ -1380,7 +1572,7 @@ 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; @@ -1827,8 +2019,19 @@ 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) + die("BUG: curl_easy_getinfo for HTTP code failed: %s", + curl_easy_strerror(c)); + if (slot->http_code >= 400) + return size; + } + do { ssize_t retval = xwrite(freq->localfile, (char *) ptr + posn, size - posn); @@ -1894,8 +2097,7 @@ struct http_object_request *new_http_object_request(const char *base_url, } 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; } @@ -1940,8 +2142,8 @@ 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); goto abort; } } @@ -1950,6 +2152,7 @@ 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); |