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http.c
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http.c
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#include "git-compat-util.h"
#include "git-curl-compat.h"
#include "hex.h"
#include "http.h"
#include "config.h"
#include "pack.h"
#include "sideband.h"
#include "run-command.h"
#include "url.h"
#include "urlmatch.h"
#include "credential.h"
#include "version.h"
#include "pkt-line.h"
#include "gettext.h"
#include "trace.h"
#include "transport.h"
#include "packfile.h"
#include "protocol.h"
#include "string-list.h"
#include "object-file.h"
#include "object-store.h"
static struct trace_key trace_curl = TRACE_KEY_INIT(CURL);
static int trace_curl_data = 1;
static int trace_curl_redact = 1;
long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
int active_requests;
int http_is_verbose;
ssize_t http_post_buffer = 16 * LARGE_PACKET_MAX;
static int min_curl_sessions = 1;
static int curl_session_count;
static int max_requests = -1;
static CURLM *curlm;
static CURL *curl_default;
#define PREV_BUF_SIZE 4096
char curl_errorstr[CURL_ERROR_SIZE];
static int curl_ssl_verify = -1;
static int curl_ssl_try;
static const char *curl_http_version = NULL;
static const char *ssl_cert;
static const char *ssl_cert_type;
static const char *ssl_cipherlist;
static const char *ssl_version;
static struct {
const char *name;
long ssl_version;
} sslversions[] = {
{ "sslv2", CURL_SSLVERSION_SSLv2 },
{ "sslv3", CURL_SSLVERSION_SSLv3 },
{ "tlsv1", CURL_SSLVERSION_TLSv1 },
#ifdef GIT_CURL_HAVE_CURL_SSLVERSION_TLSv1_0
{ "tlsv1.0", CURL_SSLVERSION_TLSv1_0 },
{ "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
{ "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
#endif
#ifdef GIT_CURL_HAVE_CURL_SSLVERSION_TLSv1_3
{ "tlsv1.3", CURL_SSLVERSION_TLSv1_3 },
#endif
};
static const char *ssl_key;
static const char *ssl_key_type;
static const char *ssl_capath;
static const char *curl_no_proxy;
#ifdef GIT_CURL_HAVE_CURLOPT_PINNEDPUBLICKEY
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 *http_proxy_authmethod;
static const char *http_proxy_ssl_cert;
static const char *http_proxy_ssl_key;
static const char *http_proxy_ssl_ca_info;
static struct credential proxy_cert_auth = CREDENTIAL_INIT;
static int proxy_ssl_cert_password_required;
static struct {
const char *name;
long curlauth_param;
} proxy_authmethods[] = {
{ "basic", CURLAUTH_BASIC },
{ "digest", CURLAUTH_DIGEST },
{ "negotiate", CURLAUTH_GSSNEGOTIATE },
{ "ntlm", CURLAUTH_NTLM },
{ "anyauth", CURLAUTH_ANY },
/*
* 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
*/
};
#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;
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;
static struct credential cert_auth = CREDENTIAL_INIT;
static int ssl_cert_password_required;
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
| CURLAUTH_DIGEST_IE
| CURLAUTH_DIGEST;
static struct curl_slist *pragma_header;
static struct curl_slist *no_pragma_header;
static struct string_list extra_http_headers = STRING_LIST_INIT_DUP;
static struct curl_slist *host_resolutions;
static struct active_request_slot *active_queue_head;
static char *cached_accept_language;
static char *http_ssl_backend;
static int http_schannel_check_revoke_mode =
#ifdef CURLSSLOPT_REVOKE_BEST_EFFORT
CURLSSLOPT_REVOKE_BEST_EFFORT;
#else
CURLSSLOPT_NO_REVOKE;
#endif
/*
* With the backend being set to `schannel`, setting sslCAinfo would override
* the Certificate Store in cURL v7.60.0 and later, which is not what we want
* by default.
*/
static int http_schannel_use_ssl_cainfo;
static int http_auto_client_cert;
size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
{
size_t size = eltsize * nmemb;
struct buffer *buffer = buffer_;
if (size > buffer->buf.len - buffer->posn)
size = buffer->buf.len - buffer->posn;
memcpy(ptr, buffer->buf.buf + buffer->posn, size);
buffer->posn += size;
return size / eltsize;
}
int seek_buffer(void *clientp, curl_off_t offset, int origin)
{
struct buffer *buffer = clientp;
if (origin != SEEK_SET)
BUG("seek_buffer only handles SEEK_SET");
if (offset < 0 || offset >= buffer->buf.len) {
error("curl seek would be outside of buffer");
return CURL_SEEKFUNC_FAIL;
}
buffer->posn = offset;
return CURL_SEEKFUNC_OK;
}
size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
{
size_t size = eltsize * nmemb;
struct strbuf *buffer = buffer_;
strbuf_add(buffer, ptr, size);
return nmemb;
}
/*
* A folded header continuation line starts with any number of spaces or
* horizontal tab characters (SP or HTAB) as per RFC 7230 section 3.2.
* It is not a continuation line if the line starts with any other character.
*/
static inline int is_hdr_continuation(const char *ptr, const size_t size)
{
return size && (*ptr == ' ' || *ptr == '\t');
}
static size_t fwrite_wwwauth(char *ptr, size_t eltsize, size_t nmemb, void *p)
{
size_t size = eltsize * nmemb;
struct strvec *values = &http_auth.wwwauth_headers;
struct strbuf buf = STRBUF_INIT;
const char *val;
size_t val_len;
/*
* Header lines may not come NULL-terminated from libcurl so we must
* limit all scans to the maximum length of the header line, or leverage
* strbufs for all operations.
*
* In addition, it is possible that header values can be split over
* multiple lines as per RFC 7230. 'Line folding' has been deprecated
* but older servers may still emit them. A continuation header field
* value is identified as starting with a space or horizontal tab.
*
* The formal definition of a header field as given in RFC 7230 is:
*
* header-field = field-name ":" OWS field-value OWS
*
* field-name = token
* field-value = *( field-content / obs-fold )
* field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
* field-vchar = VCHAR / obs-text
*
* obs-fold = CRLF 1*( SP / HTAB )
* ; obsolete line folding
* ; see Section 3.2.4
*/
/* Start of a new WWW-Authenticate header */
if (skip_iprefix_mem(ptr, size, "www-authenticate:", &val, &val_len)) {
strbuf_add(&buf, val, val_len);
/*
* Strip the CRLF that should be present at the end of each
* field as well as any trailing or leading whitespace from the
* value.
*/
strbuf_trim(&buf);
strvec_push(values, buf.buf);
http_auth.header_is_last_match = 1;
goto exit;
}
/*
* This line could be a continuation of the previously matched header
* field. If this is the case then we should append this value to the
* end of the previously consumed value.
*/
if (http_auth.header_is_last_match && is_hdr_continuation(ptr, size)) {
/*
* Trim the CRLF and any leading or trailing from this line.
*/
strbuf_add(&buf, ptr, size);
strbuf_trim(&buf);
/*
* At this point we should always have at least one existing
* value, even if it is empty. Do not bother appending the new
* value if this continuation header is itself empty.
*/
if (!values->nr) {
BUG("should have at least one existing header value");
} else if (buf.len) {
char *prev = xstrdup(values->v[values->nr - 1]);
/* Join two non-empty values with a single space. */
const char *const sp = *prev ? " " : "";
strvec_pop(values);
strvec_pushf(values, "%s%s%s", prev, sp, buf.buf);
free(prev);
}
goto exit;
}
/* Not a continuation of a previously matched auth header line. */
http_auth.header_is_last_match = 0;
/*
* If this is a HTTP status line and not a header field, this signals
* a different HTTP response. libcurl writes all the output of all
* response headers of all responses, including redirects.
* We only care about the last HTTP request response's headers so clear
* the existing array.
*/
if (skip_iprefix_mem(ptr, size, "http/", &val, &val_len))
strvec_clear(values);
exit:
strbuf_release(&buf);
return size;
}
size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
{
return nmemb;
}
static void closedown_active_slot(struct active_request_slot *slot)
{
active_requests--;
slot->in_use = 0;
}
static void finish_active_slot(struct active_request_slot *slot)
{
closedown_active_slot(slot);
curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
if (slot->finished)
(*slot->finished) = 1;
/* Store slot results so they can be read after the slot is reused */
if (slot->results) {
slot->results->curl_result = slot->curl_result;
slot->results->http_code = slot->http_code;
curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL,
&slot->results->auth_avail);
curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CONNECTCODE,
&slot->results->http_connectcode);
}
/* Run callback if appropriate */
if (slot->callback_func)
slot->callback_func(slot->callback_data);
}
static void xmulti_remove_handle(struct active_request_slot *slot)
{
curl_multi_remove_handle(curlm, slot->curl);
}
static void process_curl_messages(void)
{
int num_messages;
struct active_request_slot *slot;
CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
while (curl_message != NULL) {
if (curl_message->msg == CURLMSG_DONE) {
int curl_result = curl_message->data.result;
slot = active_queue_head;
while (slot != NULL &&
slot->curl != curl_message->easy_handle)
slot = slot->next;
if (slot) {
xmulti_remove_handle(slot);
slot->curl_result = curl_result;
finish_active_slot(slot);
} else {
fprintf(stderr, "Received DONE message for unknown request!\n");
}
} else {
fprintf(stderr, "Unknown CURL message received: %d\n",
(int)curl_message->msg);
}
curl_message = curl_multi_info_read(curlm, &num_messages);
}
}
static int http_options(const char *var, const char *value, void *cb)
{
if (!strcmp("http.version", var)) {
return git_config_string(&curl_http_version, var, value);
}
if (!strcmp("http.sslverify", var)) {
curl_ssl_verify = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.sslcipherlist", var))
return git_config_string(&ssl_cipherlist, var, value);
if (!strcmp("http.sslversion", var))
return git_config_string(&ssl_version, var, value);
if (!strcmp("http.sslcert", var))
return git_config_pathname(&ssl_cert, var, value);
if (!strcmp("http.sslcerttype", var))
return git_config_string(&ssl_cert_type, var, value);
if (!strcmp("http.sslkey", var))
return git_config_pathname(&ssl_key, var, value);
if (!strcmp("http.sslkeytype", var))
return git_config_string(&ssl_key_type, var, value);
if (!strcmp("http.sslcapath", var))
return git_config_pathname(&ssl_capath, var, value);
if (!strcmp("http.sslcainfo", var))
return git_config_pathname(&ssl_cainfo, var, value);
if (!strcmp("http.sslcertpasswordprotected", var)) {
ssl_cert_password_required = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.ssltry", var)) {
curl_ssl_try = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.sslbackend", var)) {
free(http_ssl_backend);
http_ssl_backend = xstrdup_or_null(value);
return 0;
}
if (!strcmp("http.schannelcheckrevoke", var)) {
if (value && !strcmp(value, "best-effort")) {
http_schannel_check_revoke_mode =
#ifdef CURLSSLOPT_REVOKE_BEST_EFFORT
CURLSSLOPT_REVOKE_BEST_EFFORT;
#else
CURLSSLOPT_NO_REVOKE;
warning(_("%s=%s unsupported by current cURL"),
var, value);
#endif
} else
http_schannel_check_revoke_mode =
(git_config_bool(var, value) ?
0 : CURLSSLOPT_NO_REVOKE);
return 0;
}
if (!strcmp("http.schannelusesslcainfo", var)) {
http_schannel_use_ssl_cainfo = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.sslautoclientcert", var)) {
http_auto_client_cert = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.minsessions", var)) {
min_curl_sessions = git_config_int(var, value);
if (min_curl_sessions > 1)
min_curl_sessions = 1;
return 0;
}
if (!strcmp("http.maxrequests", var)) {
max_requests = git_config_int(var, value);
return 0;
}
if (!strcmp("http.lowspeedlimit", var)) {
curl_low_speed_limit = (long)git_config_int(var, value);
return 0;
}
if (!strcmp("http.lowspeedtime", var)) {
curl_low_speed_time = (long)git_config_int(var, value);
return 0;
}
if (!strcmp("http.noepsv", var)) {
curl_ftp_no_epsv = git_config_bool(var, value);
return 0;
}
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.proxysslcert", var))
return git_config_string(&http_proxy_ssl_cert, var, value);
if (!strcmp("http.proxysslkey", var))
return git_config_string(&http_proxy_ssl_key, var, value);
if (!strcmp("http.proxysslcainfo", var))
return git_config_string(&http_proxy_ssl_ca_info, var, value);
if (!strcmp("http.proxysslcertpasswordprotected", var)) {
proxy_ssl_cert_password_required = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.cookiefile", var))
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_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)) {
#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)) {
#ifdef GIT_CURL_HAVE_CURLOPT_PINNEDPUBLICKEY
return git_config_pathname(&ssl_pinnedkey, var, value);
#else
warning(_("Public key pinning not supported with cURL < 7.39.0"));
return 0;
#endif
}
if (!strcmp("http.extraheader", var)) {
if (!value) {
return config_error_nonbool(var);
} else if (!*value) {
string_list_clear(&extra_http_headers, 0);
} else {
string_list_append(&extra_http_headers, value);
}
return 0;
}
if (!strcmp("http.curloptresolve", var)) {
if (!value) {
return config_error_nonbool(var);
} else if (!*value) {
curl_slist_free_all(host_resolutions);
host_resolutions = NULL;
} else {
host_resolutions = curl_slist_append(host_resolutions, 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;
/*
* 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;
return 0;
}
static void init_curl_http_auth(CURL *result)
{
if (!http_auth.username || !*http_auth.username) {
if (curl_empty_auth_enabled())
curl_easy_setopt(result, CURLOPT_USERPWD, ":");
return;
}
credential_fill(&http_auth);
curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username);
curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password);
}
/* *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)
{
curl_easy_setopt(result, CURLOPT_PROXYUSERNAME,
proxy_auth.username);
curl_easy_setopt(result, CURLOPT_PROXYPASSWORD,
proxy_auth.password);
}
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 (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);
}
static int has_cert_password(void)
{
if (ssl_cert == NULL || ssl_cert_password_required != 1)
return 0;
if (!cert_auth.password) {
cert_auth.protocol = xstrdup("cert");
cert_auth.host = xstrdup("");
cert_auth.username = xstrdup("");
cert_auth.path = xstrdup(ssl_cert);
credential_fill(&cert_auth);
}
return 1;
}
#ifdef GIT_CURL_HAVE_CURLOPT_PROXY_KEYPASSWD
static int has_proxy_cert_password(void)
{
if (http_proxy_ssl_cert == NULL || proxy_ssl_cert_password_required != 1)
return 0;
if (!proxy_cert_auth.password) {
proxy_cert_auth.protocol = xstrdup("cert");
proxy_cert_auth.host = xstrdup("");
proxy_cert_auth.username = xstrdup("");
proxy_cert_auth.path = xstrdup(http_proxy_ssl_cert);
credential_fill(&proxy_cert_auth);
}
return 1;
}
#endif
#ifdef GITCURL_HAVE_CURLOPT_TCP_KEEPALIVE
static void set_curl_keepalive(CURL *c)
{
curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1);
}
#else
static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type)
{
int ka = 1;
int rc;
socklen_t len = (socklen_t)sizeof(ka);
if (type != CURLSOCKTYPE_IPCXN)
return 0;
rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len);
if (rc < 0)
warning_errno("unable to set SO_KEEPALIVE on socket");
return CURL_SOCKOPT_OK;
}
static void set_curl_keepalive(CURL *c)
{
curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
}
#endif
/* Return 1 if redactions have been made, 0 otherwise. */
static int redact_sensitive_header(struct strbuf *header, size_t offset)
{
int ret = 0;
const char *sensitive_header;
if (trace_curl_redact &&
(skip_iprefix(header->buf + offset, "Authorization:", &sensitive_header) ||
skip_iprefix(header->buf + offset, "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>");
ret = 1;
} else if (trace_curl_redact &&
skip_iprefix(header->buf + offset, "Cookie:", &sensitive_header)) {
struct strbuf redacted_header = STRBUF_INIT;
const char *cookie;
while (isspace(*sensitive_header))
sensitive_header++;
cookie = 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;
}
strbuf_add(&redacted_header, cookie, equals - cookie);
strbuf_addstr(&redacted_header, "=<redacted>");
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);
ret = 1;
}
return ret;
}
/* Redact headers in info */
static void redact_sensitive_info_header(struct strbuf *header)
{
const char *sensitive_header;
/*
* curl's h2h3 prints headers in info, e.g.:
* h2h3 [<header-name>: <header-val>]
*/
if (trace_curl_redact &&
skip_iprefix(header->buf, "h2h3 [", &sensitive_header)) {
if (redact_sensitive_header(header, sensitive_header - header->buf)) {
/* redaction ate our closing bracket */
strbuf_addch(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, 0);
strbuf_insertstr((*header), 0, text);
strbuf_insertstr((*header), strlen(text), ": ");
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 void curl_dump_info(char *data, size_t size)
{
struct strbuf buf = STRBUF_INIT;
strbuf_add(&buf, data, size);
redact_sensitive_info_header(&buf);
trace_printf_key(&trace_curl, "== Info: %s", buf.buf);
strbuf_release(&buf);
}
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:
curl_dump_info(data, size);
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 http_trace_curl_no_data(void)
{
trace_override_envvar(&trace_curl, "1");
trace_curl_data = 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 void proto_list_append(struct strbuf *list, const char *proto)
{
if (!list)
return;
if (list->len)
strbuf_addch(list, ',');
strbuf_addstr(list, proto);
}
static long get_curl_allowed_protocols(int from_user, struct strbuf *list)
{
long bits = 0;
if (is_transport_allowed("http", from_user)) {
bits |= CURLPROTO_HTTP;
proto_list_append(list, "http");
}
if (is_transport_allowed("https", from_user)) {
bits |= CURLPROTO_HTTPS;
proto_list_append(list, "https");
}
if (is_transport_allowed("ftp", from_user)) {
bits |= CURLPROTO_FTP;
proto_list_append(list, "ftp");
}
if (is_transport_allowed("ftps", from_user)) {
bits |= CURLPROTO_FTPS;
proto_list_append(list, "ftps");
}
return bits;
}
#ifdef GIT_CURL_HAVE_CURL_HTTP_VERSION_2
static int get_curl_http_version_opt(const char *version_string, long *opt)
{
int i;
static struct {
const char *name;
long opt_token;
} choice[] = {
{ "HTTP/1.1", CURL_HTTP_VERSION_1_1 },
{ "HTTP/2", CURL_HTTP_VERSION_2 }
};
for (i = 0; i < ARRAY_SIZE(choice); i++) {
if (!strcmp(version_string, choice[i].name)) {
*opt = choice[i].opt_token;
return 0;
}
}
warning("unknown value given to http.version: '%s'", version_string);
return -1; /* not found */
}
#endif
static CURL *get_curl_handle(void)
{
CURL *result = curl_easy_init();
if (!result)
die("curl_easy_init failed");
if (!curl_ssl_verify) {
curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
} else {
/* Verify authenticity of the peer's certificate */
curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
/* The name in the cert must match whom we tried to connect */
curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
}
#ifdef GIT_CURL_HAVE_CURL_HTTP_VERSION_2
if (curl_http_version) {
long opt;
if (!get_curl_http_version_opt(curl_http_version, &opt)) {
/* Set request use http version */
curl_easy_setopt(result, CURLOPT_HTTP_VERSION, opt);
}
}
#endif
curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
#ifdef CURLGSSAPI_DELEGATION_FLAG
if (curl_deleg) {
int i;