forked from KolibriOS/kolibrios
Updated cURL emulation
git-svn-id: svn://kolibrios.org@3616 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Dmitry Pereverzev (SoUrcerer)
parent
30b17fb697
commit
ac0e0430a0
@ -63,97 +63,36 @@
|
||||
#define FETCHER_CURLL_SCHEDULED 1
|
||||
*/
|
||||
|
||||
typedef int X509_STORE_CTX;
|
||||
typedef int X509;
|
||||
#define CURL_ERROR_SIZE 0
|
||||
typedef int CURLcode;
|
||||
typedef int curl_infotype;
|
||||
/** SSL certificate info */
|
||||
struct cert_info {
|
||||
X509 *cert; /**< Pointer to certificate */
|
||||
long err; /**< OpenSSL error code */
|
||||
|
||||
struct fetch_curl_context {
|
||||
struct fetch_curl_context *r_next, *r_prev;
|
||||
|
||||
struct fetch *fetchh; /**< Handle for this fetch */
|
||||
|
||||
bool aborted; /**< Flag indicating fetch has been aborted */
|
||||
bool locked; /**< Flag indicating entry is already entered */
|
||||
|
||||
nsurl *url; /**< The full url the fetch refers to */
|
||||
char *path; /**< The actual path to be used with open() */
|
||||
|
||||
time_t file_etag; /**< Request etag for file (previous st.m_time) */
|
||||
};
|
||||
|
||||
/** Information for a single fetch. */
|
||||
struct curl_fetch_info {
|
||||
struct fetch *fetch_handle; /**< The fetch handle we're parented by. */
|
||||
CURL * curl_handle; /**< cURL handle if being fetched, or 0. */
|
||||
bool had_headers; /**< Headers have been processed. */
|
||||
bool abort; /**< Abort requested. */
|
||||
bool stopped; /**< Download stopped on purpose. */
|
||||
bool only_2xx; /**< Only HTTP 2xx responses acceptable. */
|
||||
bool downgrade_tls; /**< Downgrade to TLS <= 1.0 */
|
||||
nsurl *url; /**< URL of this fetch. */
|
||||
lwc_string *host; /**< The hostname of this fetch. */
|
||||
struct curl_slist *headers; /**< List of request headers. */
|
||||
char *location; /**< Response Location header, or 0. */
|
||||
unsigned long content_length; /**< Response Content-Length, or 0. */
|
||||
char *cookie_string; /**< Cookie string for this fetch */
|
||||
char *realm; /**< HTTP Auth Realm */
|
||||
char *post_urlenc; /**< Url encoded POST string, or 0. */
|
||||
long http_code; /**< HTTP result code from cURL. */
|
||||
struct curl_httppost *post_multipart; /**< Multipart post data, or 0. */
|
||||
#define MAX_CERTS 10
|
||||
struct cert_info cert_data[MAX_CERTS]; /**< HTTPS certificate data */
|
||||
unsigned int last_progress_update; /**< Time of last progress update */
|
||||
};
|
||||
static struct fetch_curl_context *ring = NULL;
|
||||
|
||||
struct cache_handle {
|
||||
CURL *handle; /**< The cached cURL handle */
|
||||
lwc_string *host; /**< The host for which this handle is cached */
|
||||
|
||||
struct cache_handle *r_prev; /**< Previous cached handle in ring. */
|
||||
struct cache_handle *r_next; /**< Next cached handle in ring. */
|
||||
};
|
||||
|
||||
CURLM *fetch_curl_multi; /**< Global cURL multi handle. */
|
||||
/** Curl handle with default options set; not used for transfers. */
|
||||
static CURL *fetch_blank_curl;
|
||||
static struct cache_handle *curl_handle_ring = 0; /**< Ring of cached handles */
|
||||
static int curl_fetchers_registered = 0;
|
||||
static bool curl_with_openssl;
|
||||
|
||||
static char fetch_error_buffer[CURL_ERROR_SIZE]; /**< Error buffer for cURL. */
|
||||
static char fetch_proxy_userpwd[100]; /**< Proxy authentication details. */
|
||||
|
||||
static bool fetch_curl_initialise(lwc_string *scheme);
|
||||
static void fetch_curl_finalise(lwc_string *scheme);
|
||||
static bool fetch_curl_can_fetch(const nsurl *url);
|
||||
static bool fetch_curl_initialise(lwc_string *scheme); //here
|
||||
static void fetch_curl_finalise(lwc_string *scheme); //here
|
||||
static bool fetch_curl_can_fetch(const nsurl *url); //here
|
||||
static void * fetch_curl_setup(struct fetch *parent_fetch, nsurl *url,
|
||||
bool only_2xx, bool downgrade_tls, const char *post_urlenc,
|
||||
const struct fetch_multipart_data *post_multipart,
|
||||
const char **headers);
|
||||
static bool fetch_curl_start(void *vfetch);
|
||||
static bool fetch_curl_initiate_fetch(struct curl_fetch_info *fetch,
|
||||
CURL *handle);
|
||||
static CURL *fetch_curl_get_handle(lwc_string *host);
|
||||
static void fetch_curl_cache_handle(CURL *handle, lwc_string *host);
|
||||
static CURLcode fetch_curl_set_options(struct curl_fetch_info *f);
|
||||
static CURLcode fetch_curl_sslctxfun(CURL *curl_handle, void *_sslctx,
|
||||
void *p);
|
||||
static void fetch_curl_abort(void *vf);
|
||||
static void fetch_curl_stop(struct curl_fetch_info *f);
|
||||
static void fetch_curl_free(void *f);
|
||||
static void fetch_curl_poll(lwc_string *scheme_ignored);
|
||||
static void fetch_curl_done(CURL *curl_handle, CURLcode result);
|
||||
static int fetch_curl_progress(void *clientp, double dltotal, double dlnow,
|
||||
double ultotal, double ulnow);
|
||||
static int fetch_curl_ignore_debug(CURL *handle,
|
||||
curl_infotype type,
|
||||
char *data,
|
||||
size_t size,
|
||||
void *userptr);
|
||||
static size_t fetch_curl_data(char *data, size_t size, size_t nmemb,
|
||||
void *_f);
|
||||
static size_t fetch_curl_header(char *data, size_t size, size_t nmemb,
|
||||
void *_f);
|
||||
static bool fetch_curl_process_headers(struct curl_fetch_info *f);
|
||||
static struct curl_httppost *fetch_curl_post_convert(
|
||||
const struct fetch_multipart_data *control);
|
||||
static int fetch_curl_verify_callback(int preverify_ok,
|
||||
X509_STORE_CTX *x509_ctx);
|
||||
static int fetch_curl_cert_verify_callback(X509_STORE_CTX *x509_ctx,
|
||||
void *parm);
|
||||
const char **headers); //here
|
||||
static bool fetch_curl_start(void *vfetch); //here
|
||||
|
||||
static void fetch_curl_abort(void *vf); //here
|
||||
static void fetch_curl_free(void *f); //here
|
||||
static void fetch_curl_poll(lwc_string *scheme_ignored); //here
|
||||
|
||||
|
||||
/**
|
||||
@ -173,18 +112,18 @@ LOG(("curl register\n"));
|
||||
lwc_intern_string("http", SLEN("http"), &scheme);
|
||||
|
||||
if (!fetch_add_fetcher(scheme,
|
||||
fetch_curl_initialise,
|
||||
fetch_curl_can_fetch,
|
||||
fetch_curl_initialise, //here
|
||||
fetch_curl_can_fetch, //here
|
||||
fetch_curl_setup,
|
||||
fetch_curl_start,
|
||||
fetch_curl_abort,
|
||||
fetch_curl_free,
|
||||
fetch_curl_abort, //here
|
||||
fetch_curl_free, //here
|
||||
#ifdef FETCHER_CURLL_SCHEDULED
|
||||
NULL,
|
||||
#else
|
||||
fetch_curl_poll,
|
||||
fetch_curl_poll, //here
|
||||
#endif
|
||||
fetch_curl_finalise)) {
|
||||
fetch_curl_finalise)) { //here
|
||||
LOG(("Unable to register cURL fetcher for HTTP"));
|
||||
}
|
||||
|
||||
@ -231,10 +170,10 @@ void fetch_curl_finalise(lwc_string *scheme)
|
||||
LOG(("curl finali\n"));
|
||||
}
|
||||
|
||||
bool fetch_curl_can_fetch(const nsurl *url)
|
||||
static bool fetch_curl_can_fetch(const nsurl *url)
|
||||
{
|
||||
LOG(("curl can fetch\n"));
|
||||
return false;
|
||||
return true; //let's lie a bit
|
||||
}
|
||||
|
||||
/**
|
||||
@ -259,14 +198,38 @@ bool fetch_curl_can_fetch(const nsurl *url)
|
||||
* callbacks will contain this.
|
||||
*/
|
||||
|
||||
void * fetch_curl_setup(struct fetch *parent_fetch, nsurl *url,
|
||||
bool only_2xx, bool downgrade_tls, const char *post_urlenc,
|
||||
void * fetch_curl_setup (struct fetch *fetchh,
|
||||
nsurl *url,
|
||||
bool only_2xx,
|
||||
bool downgrade_tls,
|
||||
const char *post_urlenc,
|
||||
const struct fetch_multipart_data *post_multipart,
|
||||
const char **headers)
|
||||
{
|
||||
LOG(("curl setup\n"));
|
||||
|
||||
return;
|
||||
LOG(("curl setup\n"));
|
||||
|
||||
struct fetch_curl_context *ctx;
|
||||
int i;
|
||||
|
||||
ctx = calloc(1, sizeof(*ctx));
|
||||
if (ctx == NULL)
|
||||
return NULL;
|
||||
|
||||
ctx->path = url_to_path(nsurl_access(url));
|
||||
if (ctx->path == NULL) {
|
||||
free(ctx);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
ctx->url = nsurl_ref(url);
|
||||
|
||||
|
||||
ctx->fetchh = fetchh;
|
||||
|
||||
RING_INSERT(ring, ctx);
|
||||
|
||||
return ctx;
|
||||
}
|
||||
|
||||
|
||||
@ -276,93 +239,27 @@ return;
|
||||
bool fetch_curl_start(void *vfetch)
|
||||
{
|
||||
LOG(("curl start\n"));
|
||||
return 0;
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Initiate a fetch from the queue.
|
||||
*
|
||||
* Called with a fetch structure and a CURL handle to be used to fetch the
|
||||
* content.
|
||||
*
|
||||
* This will return whether or not the fetch was successfully initiated.
|
||||
*/
|
||||
|
||||
bool fetch_curl_initiate_fetch(struct curl_fetch_info *fetch, CURL *handle)
|
||||
{
|
||||
LOG(("curl initi fetch\n"));
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Find a CURL handle to use to dispatch a job
|
||||
*/
|
||||
|
||||
CURL *fetch_curl_get_handle(lwc_string *host)
|
||||
{
|
||||
LOG(("curl get handle\n"));
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Cache a CURL handle for the provided host (if wanted)
|
||||
*/
|
||||
|
||||
void fetch_curl_cache_handle(CURL *handle, lwc_string *host)
|
||||
{
|
||||
LOG(("curl cache handle\n"));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Set options specific for a fetch.
|
||||
*/
|
||||
|
||||
typedef int CURLcode;
|
||||
|
||||
CURLcode
|
||||
fetch_curl_set_options(struct curl_fetch_info *f)
|
||||
{
|
||||
LOG(("curl set options\n"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* cURL SSL setup callback
|
||||
*/
|
||||
|
||||
CURLcode
|
||||
fetch_curl_sslctxfun(CURL *curl_handle, void *_sslctx, void *parm)
|
||||
{
|
||||
LOG(("curlcodessl\n"));
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Abort a fetch.
|
||||
*/
|
||||
|
||||
void fetch_curl_abort(void *vf)
|
||||
void fetch_curl_abort(void *ctx)
|
||||
{
|
||||
LOG(("curl abort\n"));
|
||||
}
|
||||
struct fetch_curl_context *c = ctx;
|
||||
|
||||
|
||||
/**
|
||||
* Clean up the provided fetch object and free it.
|
||||
*
|
||||
* Will prod the queue afterwards to allow pending requests to be initiated.
|
||||
/* To avoid the poll loop having to deal with the fetch context
|
||||
* disappearing from under it, we simply flag the abort here.
|
||||
* The poll loop itself will perform the appropriate cleanup.
|
||||
*/
|
||||
|
||||
void fetch_curl_stop(struct curl_fetch_info *f)
|
||||
{
|
||||
LOG(("curl stop\n"));
|
||||
c->aborted = true;
|
||||
}
|
||||
|
||||
|
||||
@ -370,9 +267,119 @@ void fetch_curl_stop(struct curl_fetch_info *f)
|
||||
* Free a fetch structure and associated resources.
|
||||
*/
|
||||
|
||||
void fetch_curl_free(void *vf)
|
||||
void fetch_curl_free(void *ctx)
|
||||
{
|
||||
LOG(("curl free\n"));
|
||||
struct fetch_curl_context *c = ctx;
|
||||
nsurl_unref(c->url);
|
||||
free(c->path);
|
||||
RING_REMOVE(ring, c);
|
||||
free(ctx);
|
||||
}
|
||||
|
||||
static inline bool fetch_curl_send_callback(const fetch_msg *msg,
|
||||
struct fetch_curl_context *ctx)
|
||||
{
|
||||
ctx->locked = true;
|
||||
fetch_send_callback(msg, ctx->fetchh);
|
||||
ctx->locked = false;
|
||||
|
||||
return ctx->aborted;
|
||||
}
|
||||
|
||||
static bool fetch_curl_send_header(struct fetch_curl_context *ctx,
|
||||
const char *fmt, ...)
|
||||
{
|
||||
fetch_msg msg;
|
||||
char header[64];
|
||||
va_list ap;
|
||||
|
||||
va_start(ap, fmt);
|
||||
|
||||
vsnprintf(header, sizeof header, fmt, ap);
|
||||
|
||||
va_end(ap);
|
||||
|
||||
msg.type = FETCH_HEADER;
|
||||
msg.data.header_or_data.buf = (const uint8_t *) header;
|
||||
msg.data.header_or_data.len = strlen(header);
|
||||
fetch_curl_send_callback(&msg, ctx);
|
||||
|
||||
return ctx->aborted;
|
||||
}
|
||||
|
||||
static void fetch_curl_process_error(struct fetch_curl_context *ctx, int code)
|
||||
{
|
||||
fetch_msg msg;
|
||||
char buffer[1024];
|
||||
const char *title;
|
||||
char key[8];
|
||||
|
||||
/* content is going to return error code */
|
||||
fetch_set_http_code(ctx->fetchh, code);
|
||||
|
||||
/* content type */
|
||||
if (fetch_curl_send_header(ctx, "Content-Type: text/html"))
|
||||
goto fetch_file_process_error_aborted;
|
||||
|
||||
snprintf(key, sizeof key, "HTTP%03d", code);
|
||||
title = messages_get(key);
|
||||
|
||||
snprintf(buffer, sizeof buffer, "<html><head><title>%s</title></head>"
|
||||
"<body><h1>%s</h1>"
|
||||
"<p>Error %d while fetching file %s</p></body></html>",
|
||||
title, title, code, nsurl_access(ctx->url));
|
||||
|
||||
msg.type = FETCH_DATA;
|
||||
msg.data.header_or_data.buf = (const uint8_t *) buffer;
|
||||
msg.data.header_or_data.len = strlen(buffer);
|
||||
if (fetch_curl_send_callback(&msg, ctx))
|
||||
goto fetch_file_process_error_aborted;
|
||||
|
||||
msg.type = FETCH_FINISHED;
|
||||
fetch_curl_send_callback(&msg, ctx);
|
||||
|
||||
fetch_file_process_error_aborted:
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
static void fetch_curl_process(struct fetch_curl_context *ctx) {
|
||||
|
||||
fetch_msg msg;
|
||||
const char * buf = "<html><body><h1>Hello, file fetcher!</h1></body></html>";
|
||||
// fetch_curl_process_error(ctx, 501);
|
||||
// return;
|
||||
|
||||
/* fetch is going to be successful */
|
||||
fetch_set_http_code(ctx->fetchh, 200);
|
||||
|
||||
/* Any callback can result in the fetch being aborted.
|
||||
* Therefore, we _must_ check for this after _every_ call to
|
||||
* fetch_file_send_callback().
|
||||
*/
|
||||
|
||||
/* content type */
|
||||
if (fetch_curl_send_header(ctx, "Content-Type: text/html"))
|
||||
goto fetch_file_process_aborted;
|
||||
|
||||
|
||||
/* main data loop */
|
||||
|
||||
msg.type = FETCH_DATA;
|
||||
msg.data.header_or_data.buf = (const uint8_t *) buf;
|
||||
msg.data.header_or_data.len = strlen(buf);
|
||||
fetch_curl_send_callback(&msg, ctx);
|
||||
|
||||
|
||||
|
||||
if (ctx->aborted == false) {
|
||||
msg.type = FETCH_FINISHED;
|
||||
fetch_curl_send_callback(&msg, ctx);
|
||||
}
|
||||
|
||||
fetch_file_process_aborted:
|
||||
return;
|
||||
|
||||
}
|
||||
|
||||
|
||||
@ -385,125 +392,46 @@ void fetch_curl_free(void *vf)
|
||||
void fetch_curl_poll(lwc_string *scheme_ignored)
|
||||
{
|
||||
LOG(("curl poll\n"));
|
||||
}
|
||||
|
||||
struct fetch_curl_context *c, *next;
|
||||
|
||||
/**
|
||||
* Handle a completed fetch (CURLMSG_DONE from curl_multi_info_read()).
|
||||
*
|
||||
* \param curl_handle curl easy handle of fetch
|
||||
if (ring == NULL) return;
|
||||
|
||||
/* Iterate over ring, processing each pending fetch */
|
||||
c = ring;
|
||||
do {
|
||||
/* Ignore fetches that have been flagged as locked.
|
||||
* This allows safe re-entrant calls to this function.
|
||||
* Re-entrancy can occur if, as a result of a callback,
|
||||
* the interested party causes fetch_poll() to be called
|
||||
* again.
|
||||
*/
|
||||
if (c->locked == true) {
|
||||
next = c->r_next;
|
||||
continue;
|
||||
}
|
||||
|
||||
void fetch_curl_done(CURL *curl_handle, CURLcode result)
|
||||
{
|
||||
LOG(("curl done\n"));
|
||||
}
|
||||
/* Only process non-aborted fetches */
|
||||
if (c->aborted == false) {
|
||||
/* file fetches can be processed in one go */
|
||||
fetch_curl_process(c);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Callback function for fetch progress.
|
||||
/* Compute next fetch item at the last possible moment as
|
||||
* processing this item may have added to the ring.
|
||||
*/
|
||||
next = c->r_next;
|
||||
|
||||
int fetch_curl_progress(void *clientp, double dltotal, double dlnow,
|
||||
double ultotal, double ulnow)
|
||||
{
|
||||
LOG(("curl progress\n"));
|
||||
return 0;
|
||||
}
|
||||
fetch_remove_from_queues(c->fetchh);
|
||||
fetch_free(c->fetchh);
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Ignore everything given to it.
|
||||
*
|
||||
* Used to ignore cURL debug.
|
||||
/* Advance to next ring entry, exiting if we've reached
|
||||
* the start of the ring or the ring has become empty
|
||||
*/
|
||||
} while ( (c = next) != ring && ring != NULL);
|
||||
|
||||
int fetch_curl_ignore_debug(CURL *handle,
|
||||
curl_infotype type,
|
||||
char *data,
|
||||
size_t size,
|
||||
void *userptr)
|
||||
{
|
||||
LOG(("curl igdebug\n"));
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Callback function for cURL.
|
||||
*/
|
||||
|
||||
size_t fetch_curl_data(char *data, size_t size, size_t nmemb,
|
||||
void *_f)
|
||||
{
|
||||
LOG(("curl callback\n"));
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Callback function for headers.
|
||||
*
|
||||
* See RFC 2616 4.2.
|
||||
*/
|
||||
|
||||
size_t fetch_curl_header(char *data, size_t size, size_t nmemb,
|
||||
void *_f)
|
||||
|
||||
{
|
||||
LOG(("curl header\n"));
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Find the status code and content type and inform the caller.
|
||||
*
|
||||
* Return true if the fetch is being aborted.
|
||||
*/
|
||||
|
||||
bool fetch_curl_process_headers(struct curl_fetch_info *f)
|
||||
{
|
||||
LOG(("curl proc head\n"));
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Convert a list of struct ::fetch_multipart_data to a list of
|
||||
* struct curl_httppost for libcurl.
|
||||
*/
|
||||
struct curl_httppost *
|
||||
fetch_curl_post_convert(const struct fetch_multipart_data *control)
|
||||
{
|
||||
struct curl_httppost *post = 0;
|
||||
|
||||
LOG(("curl post - FAIL\n"));
|
||||
return post;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* OpenSSL Certificate verification callback
|
||||
* Stores certificate details in fetch struct.
|
||||
*/
|
||||
|
||||
int fetch_curl_verify_callback(int preverify_ok, X509_STORE_CTX *x509_ctx)
|
||||
{
|
||||
|
||||
LOG(("curl verify\n"));
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* OpenSSL certificate chain verification callback
|
||||
* Verifies certificate chain, setting up context for fetch_curl_verify_callback
|
||||
*/
|
||||
|
||||
int fetch_curl_cert_verify_callback(X509_STORE_CTX *x509_ctx, void *parm)
|
||||
{
|
||||
|
||||
LOG(("curl cert verify\n"));
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user