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curl-helper.c
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/***
*** curl-helper.c
***
*** Copyright (c) 2003-2008, Lars Nilsson, <lars@quantumchamaeleon.com>
*** Copyright (c) 2009, ygrek, <ygrek@autistici.org>
***/
#ifndef CAML_NAME_SPACE
#define CAML_NAME_SPACE
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <caml/config.h> /* defines HAS_UNISTD */
#ifdef HAS_UNISTD
#include <unistd.h>
#endif
/* suppress false gcc warning on seekFunction */
#define CURL_DISABLE_TYPECHECK
#include <curl/curl.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/mlvalues.h>
#include <caml/callback.h>
#include <caml/fail.h>
#include <caml/unixsupport.h>
#include <caml/custom.h>
#include <caml/threads.h>
#ifndef CAMLdrop
#define CAMLdrop caml_local_roots = caml__frame
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#else
#pragma message("No config file given.")
#endif
#ifdef __cplusplus
extern "C" {
#endif
#define Val_none Val_int(0)
static __inline value
Val_some( value v )
{
CAMLparam1( v );
CAMLlocal1( some );
some = caml_alloc(1, 0);
Store_field( some, 0, v );
CAMLreturn( some );
}
static value Val_pair(value v1, value v2)
{
CAMLparam2(v1,v2);
CAMLlocal1(pair);
pair = caml_alloc_small(2,0);
Field(pair,0) = v1;
Field(pair,1) = v2;
CAMLreturn(pair);
}
static value Val_cons(value list, value v) { return Val_pair(v,list); }
/*
* Based on curl hiperfifo.c example
*/
#ifdef _WIN32
#ifndef Val_socket
#define Val_socket(v) win_alloc_socket(v)
#endif
#ifndef Socket_val
#error Socket_val not defined in unixsupport.h
#endif
#else /* _WIN32 */
#ifndef Socket_val
#define Socket_val(v) Long_val(v)
#endif
#ifndef Val_socket
#define Val_socket(v) Val_int(v)
#endif
#endif /* _WIN32 */
typedef struct Connection Connection;
typedef struct ConnectionList ConnectionList;
#define Connection_val(v) (*(Connection**)Data_custom_val(v))
typedef enum OcamlValues
{
Ocaml_WRITEFUNCTION,
Ocaml_READFUNCTION,
Ocaml_HEADERFUNCTION,
Ocaml_PROGRESSFUNCTION,
Ocaml_XFERINFOFUNCTION,
Ocaml_PREREQFUNCTION,
Ocaml_DEBUGFUNCTION,
Ocaml_IOCTLFUNCTION,
Ocaml_SEEKFUNCTION,
Ocaml_OPENSOCKETFUNCTION,
/* Ocaml_CLOSESOCKETFUNCTION, */
Ocaml_SSH_KEYFUNCTION,
Ocaml_ERRORBUFFER,
Ocaml_PRIVATE,
/* Not used, last for size */
OcamlValuesSize
} OcamlValue;
struct Connection
{
CURL *handle;
value ocamlValues;
size_t refcount; /* number of references to this structure */
char *curl_ERRORBUFFER;
char *curl_POSTFIELDS;
struct curl_slist *curl_HTTPHEADER;
struct curl_slist *httpPostBuffers;
struct curl_httppost *httpPostFirst;
struct curl_httppost *httpPostLast;
struct curl_slist *curl_RESOLVE;
struct curl_slist *curl_QUOTE;
struct curl_slist *curl_POSTQUOTE;
struct curl_slist *curl_HTTP200ALIASES;
struct curl_slist *curl_MAIL_RCPT;
struct curl_slist *curl_CONNECT_TO;
#if HAVE_DECL_CURLOPT_MIMEPOST
curl_mime *curl_MIMEPOST;
#endif
};
typedef struct CURLErrorMapping CURLErrorMapping;
struct CURLErrorMapping
{
char *name;
CURLcode error;
};
CURLErrorMapping errorMap[] =
{
{"CURLE_OK", CURLE_OK},
#if HAVE_DECL_CURLE_UNSUPPORTED_PROTOCOL
{"CURLE_UNSUPPORTED_PROTOCOL", CURLE_UNSUPPORTED_PROTOCOL},
#else
{"CURLE_UNSUPPORTED_PROTOCOL", -1},
#endif
#if HAVE_DECL_CURLE_FAILED_INIT
{"CURLE_FAILED_INIT", CURLE_FAILED_INIT},
#else
{"CURLE_FAILED_INIT", -1},
#endif
#if HAVE_DECL_CURLE_URL_MALFORMAT
{"CURLE_URL_MALFORMAT", CURLE_URL_MALFORMAT},
#else
{"CURLE_URL_MALFORMAT", -1},
#endif
#if HAVE_DECL_CURLE_URL_MALFORMAT_USER
{"CURLE_URL_MALFORMAT_USER", CURLE_URL_MALFORMAT_USER},
#else
{"CURLE_URL_MALFORMAT_USER", -1},
#endif
#if HAVE_DECL_CURLE_COULDNT_RESOLVE_PROXY
{"CURLE_COULDNT_RESOLVE_PROXY", CURLE_COULDNT_RESOLVE_PROXY},
#else
{"CURLE_COULDNT_RESOLVE_PROXY", -1},
#endif
#if HAVE_DECL_CURLE_COULDNT_RESOLVE_HOST
{"CURLE_COULDNT_RESOLVE_HOST", CURLE_COULDNT_RESOLVE_HOST},
#else
{"CURLE_COULDNT_RESOLVE_HOST", -1},
#endif
#if HAVE_DECL_CURLE_COULDNT_CONNECT
{"CURLE_COULDNT_CONNECT", CURLE_COULDNT_CONNECT},
#else
{"CURLE_COULDNT_CONNECT", -1},
#endif
#if HAVE_DECL_CURLE_FTP_WEIRD_SERVER_REPLY
{"CURLE_FTP_WEIRD_SERVER_REPLY", CURLE_FTP_WEIRD_SERVER_REPLY},
#else
{"CURLE_FTP_WEIRD_SERVER_REPLY", -1},
#endif
#if HAVE_DECL_CURLE_FTP_ACCESS_DENIED
{"CURLE_FTP_ACCESS_DENIED", CURLE_FTP_ACCESS_DENIED},
#else
{"CURLE_FTP_ACCESS_DENIED", -1},
#endif
#if HAVE_DECL_CURLE_FTP_USER_PASSWORD_INCORRECT
{"CURLE_FTP_USER_PASSWORD_INCORRECT", CURLE_FTP_USER_PASSWORD_INCORRECT},
#else
{"CURLE_FTP_USER_PASSWORD_INCORRECT", -1},
#endif
#if HAVE_DECL_CURLE_FTP_WEIRD_PASS_REPLY
{"CURLE_FTP_WEIRD_PASS_REPLY", CURLE_FTP_WEIRD_PASS_REPLY},
#else
{"CURLE_FTP_WEIRD_PASS_REPLY", -1},
#endif
#if HAVE_DECL_CURLE_FTP_WEIRD_USER_REPLY
{"CURLE_FTP_WEIRD_USER_REPLY", CURLE_FTP_WEIRD_USER_REPLY},
#else
{"CURLE_FTP_WEIRD_USER_REPLY", -1},
#endif
#if HAVE_DECL_CURLE_FTP_WEIRD_PASV_REPLY
{"CURLE_FTP_WEIRD_PASV_REPLY", CURLE_FTP_WEIRD_PASV_REPLY},
#else
{"CURLE_FTP_WEIRD_PASV_REPLY", -1},
#endif
#if HAVE_DECL_CURLE_FTP_WEIRD_227_FORMAT
{"CURLE_FTP_WEIRD_227_FORMAT", CURLE_FTP_WEIRD_227_FORMAT},
#else
{"CURLE_FTP_WEIRD_227_FORMAT", -1},
#endif
#if HAVE_DECL_CURLE_FTP_CANT_GET_HOST
{"CURLE_FTP_CANT_GET_HOST", CURLE_FTP_CANT_GET_HOST},
#else
{"CURLE_FTP_CANT_GET_HOST", -1},
#endif
#if HAVE_DECL_CURLE_FTP_CANT_RECONNECT
{"CURLE_FTP_CANT_RECONNECT", CURLE_FTP_CANT_RECONNECT},
#else
{"CURLE_FTP_CANT_RECONNECT", -1},
#endif
#if HAVE_DECL_CURLE_FTP_COULDNT_SET_BINARY
{"CURLE_FTP_COULDNT_SET_BINARY", CURLE_FTP_COULDNT_SET_BINARY},
#else
{"CURLE_FTP_COULDNT_SET_BINARY", -1},
#endif
#if HAVE_DECL_CURLE_PARTIAL_FILE
{"CURLE_PARTIAL_FILE", CURLE_PARTIAL_FILE},
#else
{"CURLE_PARTIAL_FILE", -1},
#endif
#if HAVE_DECL_CURLE_FTP_COULDNT_RETR_FILE
{"CURLE_FTP_COULDNT_RETR_FILE", CURLE_FTP_COULDNT_RETR_FILE},
#else
{"CURLE_FTP_COULDNT_RETR_FILE", -1},
#endif
#if HAVE_DECL_CURLE_FTP_WRITE_ERROR
{"CURLE_FTP_WRITE_ERROR", CURLE_FTP_WRITE_ERROR},
#else
{"CURLE_FTP_WRITE_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_FTP_QUOTE_ERROR
{"CURLE_FTP_QUOTE_ERROR", CURLE_FTP_QUOTE_ERROR},
#else
{"CURLE_FTP_QUOTE_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_HTTP_RETURNED_ERROR
{"CURLE_HTTP_RETURNED_ERROR", CURLE_HTTP_RETURNED_ERROR},
#else
{"CURLE_HTTP_RETURNED_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_WRITE_ERROR
{"CURLE_WRITE_ERROR", CURLE_WRITE_ERROR},
#else
{"CURLE_WRITE_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_MALFORMAT_USER
{"CURLE_MALFORMAT_USER", CURLE_MALFORMAT_USER},
#else
{"CURLE_MALFORMAT_USER", -1},
#endif
#if HAVE_DECL_CURLE_FTP_COULDNT_STOR_FILE
{"CURLE_FTP_COULDNT_STOR_FILE", CURLE_FTP_COULDNT_STOR_FILE},
#else
{"CURLE_FTP_COULDNT_STOR_FILE", -1},
#endif
#if HAVE_DECL_CURLE_READ_ERROR
{"CURLE_READ_ERROR", CURLE_READ_ERROR},
#else
{"CURLE_READ_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_OUT_OF_MEMORY
{"CURLE_OUT_OF_MEMORY", CURLE_OUT_OF_MEMORY},
#else
{"CURLE_OUT_OF_MEMORY", -1},
#endif
#if HAVE_DECL_CURLE_OPERATION_TIMEOUTED
{"CURLE_OPERATION_TIMEOUTED", CURLE_OPERATION_TIMEOUTED},
#else
{"CURLE_OPERATION_TIMEOUTED", -1},
#endif
#if HAVE_DECL_CURLE_FTP_COULDNT_SET_ASCII
{"CURLE_FTP_COULDNT_SET_ASCII", CURLE_FTP_COULDNT_SET_ASCII},
#else
{"CURLE_FTP_COULDNT_SET_ASCII", -1},
#endif
#if HAVE_DECL_CURLE_FTP_PORT_FAILED
{"CURLE_FTP_PORT_FAILED", CURLE_FTP_PORT_FAILED},
#else
{"CURLE_FTP_PORT_FAILED", -1},
#endif
#if HAVE_DECL_CURLE_FTP_COULDNT_USE_REST
{"CURLE_FTP_COULDNT_USE_REST", CURLE_FTP_COULDNT_USE_REST},
#else
{"CURLE_FTP_COULDNT_USE_REST", -1},
#endif
#if HAVE_DECL_CURLE_FTP_COULDNT_GET_SIZE
{"CURLE_FTP_COULDNT_GET_SIZE", CURLE_FTP_COULDNT_GET_SIZE},
#else
{"CURLE_FTP_COULDNT_GET_SIZE", -1},
#endif
#if HAVE_DECL_CURLE_HTTP_RANGE_ERROR
{"CURLE_HTTP_RANGE_ERROR", CURLE_HTTP_RANGE_ERROR},
#else
{"CURLE_HTTP_RANGE_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_HTTP_POST_ERROR
{"CURLE_HTTP_POST_ERROR", CURLE_HTTP_POST_ERROR},
#else
{"CURLE_HTTP_POST_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_SSL_CONNECT_ERROR
{"CURLE_SSL_CONNECT_ERROR", CURLE_SSL_CONNECT_ERROR},
#else
{"CURLE_SSL_CONNECT_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_BAD_DOWNLOAD_RESUME
{"CURLE_BAD_DOWNLOAD_RESUME", CURLE_BAD_DOWNLOAD_RESUME},
#else
{"CURLE_BAD_DOWNLOAD_RESUME", -1},
#endif
#if HAVE_DECL_CURLE_FILE_COULDNT_READ_FILE
{"CURLE_FILE_COULDNT_READ_FILE", CURLE_FILE_COULDNT_READ_FILE},
#else
{"CURLE_FILE_COULDNT_READ_FILE", -1},
#endif
#if HAVE_DECL_CURLE_LDAP_CANNOT_BIND
{"CURLE_LDAP_CANNOT_BIND", CURLE_LDAP_CANNOT_BIND},
#else
{"CURLE_LDAP_CANNOT_BIND", -1},
#endif
#if HAVE_DECL_CURLE_LDAP_SEARCH_FAILED
{"CURLE_LDAP_SEARCH_FAILED", CURLE_LDAP_SEARCH_FAILED},
#else
{"CURLE_LDAP_SEARCH_FAILED", -1},
#endif
#if HAVE_DECL_CURLE_LIBRARY_NOT_FOUND
{"CURLE_LIBRARY_NOT_FOUND", CURLE_LIBRARY_NOT_FOUND},
#else
{"CURLE_LIBRARY_NOT_FOUND", -1},
#endif
#if HAVE_DECL_CURLE_FUNCTION_NOT_FOUND
{"CURLE_FUNCTION_NOT_FOUND", CURLE_FUNCTION_NOT_FOUND},
#else
{"CURLE_FUNCTION_NOT_FOUND", -1},
#endif
#if HAVE_DECL_CURLE_ABORTED_BY_CALLBACK
{"CURLE_ABORTED_BY_CALLBACK", CURLE_ABORTED_BY_CALLBACK},
#else
{"CURLE_ABORTED_BY_CALLBACK", -1},
#endif
#if HAVE_DECL_CURLE_BAD_FUNCTION_ARGUMENT
{"CURLE_BAD_FUNCTION_ARGUMENT", CURLE_BAD_FUNCTION_ARGUMENT},
#else
{"CURLE_BAD_FUNCTION_ARGUMENT", -1},
#endif
#if HAVE_DECL_CURLE_BAD_CALLING_ORDER
{"CURLE_BAD_CALLING_ORDER", CURLE_BAD_CALLING_ORDER},
#else
{"CURLE_BAD_CALLING_ORDER", -1},
#endif
#if HAVE_DECL_CURLE_INTERFACE_FAILED
{"CURLE_INTERFACE_FAILED", CURLE_INTERFACE_FAILED},
#else
{"CURLE_INTERFACE_FAILED", -1},
#endif
#if HAVE_DECL_CURLE_BAD_PASSWORD_ENTERED
{"CURLE_BAD_PASSWORD_ENTERED", CURLE_BAD_PASSWORD_ENTERED},
#else
{"CURLE_BAD_PASSWORD_ENTERED", -1},
#endif
#if HAVE_DECL_CURLE_TOO_MANY_REDIRECTS
{"CURLE_TOO_MANY_REDIRECTS", CURLE_TOO_MANY_REDIRECTS},
#else
{"CURLE_TOO_MANY_REDIRECTS", -1},
#endif
#if HAVE_DECL_CURLE_UNKNOWN_TELNET_OPTION
{"CURLE_UNKNOWN_TELNET_OPTION", CURLE_UNKNOWN_TELNET_OPTION},
#else
{"CURLE_UNKNOWN_TELNET_OPTION", -1},
#endif
#if HAVE_DECL_CURLE_TELNET_OPTION_SYNTAX
{"CURLE_TELNET_OPTION_SYNTAX", CURLE_TELNET_OPTION_SYNTAX},
#else
{"CURLE_TELNET_OPTION_SYNTAX", -1},
#endif
#if HAVE_DECL_CURLE_SSL_PEER_CERTIFICATE
{"CURLE_SSL_PEER_CERTIFICATE", CURLE_SSL_PEER_CERTIFICATE},
#else
{"CURLE_SSL_PEER_CERTIFICATE", -1},
#endif
#if HAVE_DECL_CURLE_GOT_NOTHING
{"CURLE_GOT_NOTHING", CURLE_GOT_NOTHING},
#else
{"CURLE_GOT_NOTHING", -1},
#endif
#if HAVE_DECL_CURLE_SSL_ENGINE_NOTFOUND
{"CURLE_SSL_ENGINE_NOTFOUND", CURLE_SSL_ENGINE_NOTFOUND},
#else
{"CURLE_SSL_ENGINE_NOTFOUND", -1},
#endif
#if HAVE_DECL_CURLE_SSL_ENGINE_SETFAILED
{"CURLE_SSL_ENGINE_SETFAILED", CURLE_SSL_ENGINE_SETFAILED},
#else
{"CURLE_SSL_ENGINE_SETFAILED", -1},
#endif
#if HAVE_DECL_CURLE_SEND_ERROR
{"CURLE_SEND_ERROR", CURLE_SEND_ERROR},
#else
{"CURLE_SEND_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_RECV_ERROR
{"CURLE_RECV_ERROR", CURLE_RECV_ERROR},
#else
{"CURLE_RECV_ERROR", -1},
#endif
#if HAVE_DECL_CURLE_SHARE_IN_USE
{"CURLE_SHARE_IN_USE", CURLE_SHARE_IN_USE},
#else
{"CURLE_SHARE_IN_USE", -1},
#endif
#if HAVE_DECL_CURLE_SSL_CERTPROBLEM
{"CURLE_SSL_CERTPROBLEM", CURLE_SSL_CERTPROBLEM},
#else
{"CURLE_SSL_CERTPROBLEM", -1},
#endif
#if HAVE_DECL_CURLE_SSL_CIPHER
{"CURLE_SSL_CIPHER", CURLE_SSL_CIPHER},
#else
{"CURLE_SSL_CIPHER", -1},
#endif
#if HAVE_DECL_CURLE_SSL_CACERT
{"CURLE_SSL_CACERT", CURLE_SSL_CACERT},
#else
{"CURLE_SSL_CACERT", -1},
#endif
#if HAVE_DECL_CURLE_BAD_CONTENT_ENCODING
{"CURLE_BAD_CONTENT_ENCODING", CURLE_BAD_CONTENT_ENCODING},
#else
{"CURLE_BAD_CONTENT_ENCODING", -1},
#endif
#if HAVE_DECL_CURLE_LDAP_INVALID_URL
{"CURLE_LDAP_INVALID_URL", CURLE_LDAP_INVALID_URL},
#else
{"CURLE_LDAP_INVALID_URL", -1},
#endif
#if HAVE_DECL_CURLE_FILESIZE_EXCEEDED
{"CURLE_FILESIZE_EXCEEDED", CURLE_FILESIZE_EXCEEDED},
#else
{"CURLE_FILESIZE_EXCEEDED", -1},
#endif
#if HAVE_DECL_CURLE_FTP_SSL_FAILED
{"CURLE_FTP_SSL_FAILED", CURLE_FTP_SSL_FAILED},
#else
{"CURLE_FTP_SSL_FAILED", -1},
#endif
#if HAVE_DECL_CURLE_SEND_FAIL_REWIND
{"CURLE_SEND_FAIL_REWIND", CURLE_SEND_FAIL_REWIND},
#else
{"CURLE_SEND_FAIL_REWIND", -1},
#endif
#if HAVE_DECL_CURLE_SSL_ENGINE_INITFAILED
{"CURLE_SSL_ENGINE_INITFAILED", CURLE_SSL_ENGINE_INITFAILED},
#else
{"CURLE_SSL_ENGINE_INITFAILED", -1},
#endif
#if HAVE_DECL_CURLE_LOGIN_DENIED
{"CURLE_LOGIN_DENIED", CURLE_LOGIN_DENIED},
#else
{"CURLE_LOGIN_DENIED", -1},
#endif
#if HAVE_DECL_CURLE_TFTP_NOTFOUND
{"CURLE_TFTP_NOTFOUND", CURLE_TFTP_NOTFOUND},
#else
{"CURLE_TFTP_NOTFOUND", -1},
#endif
#if HAVE_DECL_CURLE_TFTP_PERM
{"CURLE_TFTP_PERM", CURLE_TFTP_PERM},
#else
{"CURLE_TFTP_PERM", -1},
#endif
#if HAVE_DECL_CURLE_REMOTE_DISK_FULL
{"CURLE_REMOTE_DISK_FULL", CURLE_REMOTE_DISK_FULL},
#else
{"CURLE_REMOTE_DISK_FULL", -1},
#endif
#if HAVE_DECL_CURLE_TFTP_ILLEGAL
{"CURLE_TFTP_ILLEGAL", CURLE_TFTP_ILLEGAL},
#else
{"CURLE_TFTP_ILLEGAL", -1},
#endif
#if HAVE_DECL_CURLE_TFTP_UNKNOWNID
{"CURLE_TFTP_UNKNOWNID", CURLE_TFTP_UNKNOWNID},
#else
{"CURLE_TFTP_UNKNOWNID", -1},
#endif
#if HAVE_DECL_CURLE_REMOTE_FILE_EXISTS
{"CURLE_REMOTE_FILE_EXISTS", CURLE_REMOTE_FILE_EXISTS},
#else
{"CURLE_REMOTE_FILE_EXISTS", -1},
#endif
#if HAVE_DECL_CURLE_TFTP_NOSUCHUSER
{"CURLE_TFTP_NOSUCHUSER", CURLE_TFTP_NOSUCHUSER},
#else
{"CURLE_TFTP_NOSUCHUSER", -1},
#endif
#if HAVE_DECL_CURLE_CONV_FAILED
{"CURLE_CONV_FAILED", CURLE_CONV_FAILED},
#else
{"CURLE_CONV_FAILED", -1},
#endif
#if HAVE_DECL_CURLE_CONV_REQD
{"CURLE_CONV_REQD", CURLE_CONV_REQD},
#else
{"CURLE_CONV_REQD", -1},
#endif
#if HAVE_DECL_CURLE_SSL_CACERT_BADFILE
{"CURLE_SSL_CACERT_BADFILE", CURLE_SSL_CACERT_BADFILE},
#else
{"CURLE_SSL_CACERT_BADFILE", -1},
#endif
#if HAVE_DECL_CURLE_REMOTE_FILE_NOT_FOUND
{"CURLE_REMOTE_FILE_NOT_FOUND", CURLE_REMOTE_FILE_NOT_FOUND},
#else
{"CURLE_REMOTE_FILE_NOT_FOUND", -1},
#endif
#if HAVE_DECL_CURLE_SSH
{"CURLE_SSH", CURLE_SSH},
#else
{"CURLE_SSH", -1},
#endif
#if HAVE_DECL_CURLE_SSL_SHUTDOWN_FAILED
{"CURLE_SSL_SHUTDOWN_FAILED", CURLE_SSL_SHUTDOWN_FAILED},
#else
{"CURLE_SSL_SHUTDOWN_FAILED", -1},
#endif
#if HAVE_DECL_CURLE_AGAIN
{"CURLE_AGAIN", CURLE_AGAIN},
#else
{"CURLE_AGAIN", -1},
#endif
/* sync check_enums */
{NULL, (CURLcode)0}
};
typedef struct CURLOptionMapping CURLOptionMapping;
struct CURLOptionMapping
{
void (*optionHandler)(Connection *, value);
char *name;
};
static char* strdup_ml(value v)
{
char* p = NULL;
p = (char*)malloc(caml_string_length(v)+1);
memcpy(p,String_val(v),caml_string_length(v)+1); // caml strings have terminating zero
return p;
}
static value ml_copy_string(char const* p, size_t size)
{
value v = caml_alloc_string(size);
memcpy(&Byte(v,0),p,size);
return v;
}
/* prepends to the beginning of list */
static struct curl_slist* curl_slist_prepend_ml(struct curl_slist* list, value v)
{
/* FIXME check NULLs */
struct curl_slist* new_item = (struct curl_slist*)malloc(sizeof(struct curl_slist));
new_item->next = list;
new_item->data = strdup_ml(v);
return new_item;
}
static void free_curl_slist(struct curl_slist *slist)
{
if (NULL == slist)
return;
curl_slist_free_all(slist);
}
static void raiseError(Connection *conn, CURLcode code)
{
CAMLparam0();
CAMLlocal1(exceptionData);
const value *exception;
char *errorString = "Unknown Error";
int i;
for (i = 0; errorMap[i].name != NULL; i++)
{
if (errorMap[i].error == code)
{
errorString = errorMap[i].name;
break;
}
}
exceptionData = caml_alloc_tuple(3);
Store_field(exceptionData, 0, Val_int(code));
Store_field(exceptionData, 1, Val_int(code));
Store_field(exceptionData, 2, caml_copy_string(errorString));
if (conn != NULL && conn->curl_ERRORBUFFER != NULL)
{
Store_field(Field(conn->ocamlValues, Ocaml_ERRORBUFFER), 0, caml_copy_string(conn->curl_ERRORBUFFER));
}
exception = caml_named_value("CurlException");
if (exception == NULL)
caml_failwith("CurlException not registered");
caml_raise_with_arg(*exception, exceptionData);
CAMLreturn0;
}
static void resetOcamlValues(Connection* connection)
{
int i;
for (i = 0; i < OcamlValuesSize; i++)
Store_field(connection->ocamlValues, i, Val_unit);
}
static Connection* allocConnection(CURL* h)
{
Connection* connection = (Connection *)malloc(sizeof(Connection));
connection->ocamlValues = caml_alloc(OcamlValuesSize, 0);
resetOcamlValues(connection);
caml_register_global_root(&connection->ocamlValues);
connection->handle = h;
curl_easy_setopt(h, CURLOPT_PRIVATE, connection);
connection->refcount = 0;
connection->curl_ERRORBUFFER = NULL;
connection->curl_POSTFIELDS = NULL;
connection->curl_HTTPHEADER = NULL;
connection->httpPostBuffers = NULL;
connection->httpPostFirst = NULL;
connection->httpPostLast = NULL;
connection->curl_QUOTE = NULL;
connection->curl_POSTQUOTE = NULL;
connection->curl_HTTP200ALIASES = NULL;
connection->curl_RESOLVE = NULL;
connection->curl_MAIL_RCPT = NULL;
connection->curl_CONNECT_TO = NULL;
#if HAVE_DECL_CURLOPT_MIMEPOST
connection->curl_MIMEPOST = NULL;
#endif
return connection;
}
static Connection *newConnection(void)
{
CURL* h;
caml_enter_blocking_section();
h = curl_easy_init();
caml_leave_blocking_section();
return allocConnection(h);
}
static void free_if(void* p) { if (NULL != p) free(p); }
static void removeConnection(Connection *connection, int finalization)
{
const char* fin_url = NULL;
if (!connection->handle)
{
return; /* already cleaned up */
}
if (finalization)
{
/* cannot engage OCaml runtime at finalization, just report leak */
if (CURLE_OK != curl_easy_getinfo(connection->handle, CURLINFO_EFFECTIVE_URL, &fin_url) || NULL == fin_url)
{
fin_url = "unknown";
}
fprintf(stderr,"Curl: handle %p leaked, conn %p, url %s\n", connection->handle, connection, fin_url);
fflush(stderr);
}
else
{
caml_enter_blocking_section();
curl_easy_cleanup(connection->handle);
caml_leave_blocking_section();
}
connection->handle = NULL;
caml_remove_global_root(&connection->ocamlValues);
free_if(connection->curl_ERRORBUFFER);
free_if(connection->curl_POSTFIELDS);
free_curl_slist(connection->curl_HTTPHEADER);
free_curl_slist(connection->httpPostBuffers);
if (connection->httpPostFirst != NULL)
curl_formfree(connection->httpPostFirst);
free_curl_slist(connection->curl_RESOLVE);
free_curl_slist(connection->curl_QUOTE);
free_curl_slist(connection->curl_POSTQUOTE);
free_curl_slist(connection->curl_HTTP200ALIASES);
free_curl_slist(connection->curl_MAIL_RCPT);
free_curl_slist(connection->curl_CONNECT_TO);
#if HAVE_DECL_CURLOPT_MIMEPOST
curl_mime_free(connection->curl_MIMEPOST);
#endif
}
static Connection* getConnection(CURL* h)
{
Connection* p = NULL;
if (CURLE_OK != curl_easy_getinfo(h, CURLINFO_PRIVATE, &p) || NULL == p)
{
caml_failwith("Unknown handle");
}
return p;
}
#if 1
static void checkConnection(Connection * connection)
{
(void)connection;
}
#else
static void checkConnection(Connection *connection)
{
if (connection != getConnection(connection->handle))
{
caml_failwith("Invalid Connection");
}
}
#endif
void op_curl_easy_finalize(value v)
{
Connection* conn = Connection_val(v);
/* same connection may be referenced by several different
OCaml values, see e.g. caml_curl_multi_remove_finished */
conn->refcount--;
if (0 == conn->refcount)
{
removeConnection(conn, 1);
free(conn);
}
}
int op_curl_easy_compare(value v1, value v2)
{
size_t p1 = (size_t)Connection_val(v1);
size_t p2 = (size_t)Connection_val(v2);
return (p1 == p2 ? 0 : (p1 > p2 ? 1 : -1)); /* compare addresses */
}
intnat op_curl_easy_hash(value v)
{
return (size_t)Connection_val(v); /* address */
}
static struct custom_operations curl_easy_ops = {
"ygrek.curl_easy",
op_curl_easy_finalize,
op_curl_easy_compare,
op_curl_easy_hash,
custom_serialize_default,
custom_deserialize_default,
#if defined(custom_compare_ext_default)
custom_compare_ext_default,
#endif
};
value caml_curl_alloc(Connection* conn)
{
value v = caml_alloc_custom(&curl_easy_ops, sizeof(Connection*), 0, 1);
Connection_val(v) = conn;
conn->refcount++;
return v;
}
static size_t cb_WRITEFUNCTION(char *ptr, size_t size, size_t nmemb, void *data)
{
caml_leave_blocking_section();
CAMLparam0();
CAMLlocal2(result, str);
Connection *conn = (Connection *)data;
checkConnection(conn);
str = ml_copy_string(ptr,size*nmemb);
result = caml_callback_exn(Field(conn->ocamlValues, Ocaml_WRITEFUNCTION), str);
size_t r = Is_exception_result(result) ? 0 : Int_val(result);
CAMLdrop;
caml_enter_blocking_section();
return r;
}
static size_t cb_WRITEFUNCTION2(char *ptr, size_t size, size_t nmemb, void *data)
{
caml_leave_blocking_section();
CAMLparam0();
CAMLlocal2(result, str);
Connection *conn = (Connection *)data;
checkConnection(conn);
str = ml_copy_string(ptr,size*nmemb);
result = caml_callback_exn(Field(conn->ocamlValues, Ocaml_WRITEFUNCTION), str);
size_t r = 0;
if (!Is_exception_result(result))
{
if (Is_block(result)) /* Proceed */
{
r = size * nmemb;
}
else
{
if (0 == Int_val(result)) /* Pause */
r = CURL_WRITEFUNC_PAUSE;
/* else 1 = Abort */
}
}
CAMLdrop;
caml_enter_blocking_section();
return r;
}
static size_t cb_READFUNCTION(void *ptr, size_t size, size_t nmemb, void *data)
{
caml_leave_blocking_section();
CAMLparam0();
CAMLlocal1(result);
Connection *conn = (Connection *)data;
size_t length;
checkConnection(conn);
result = caml_callback_exn(Field(conn->ocamlValues, Ocaml_READFUNCTION),
Val_int(size*nmemb));
size_t r = CURL_READFUNC_ABORT;
if (!Is_exception_result(result))
{
length = caml_string_length(result);
if (length <= size*nmemb)
{
memcpy(ptr, String_val(result), length);
r = length;
}
}
CAMLdrop;
caml_enter_blocking_section();
return r;
}
static size_t cb_READFUNCTION2(void *ptr, size_t size, size_t nmemb, void *data)
{
caml_leave_blocking_section();
CAMLparam0();
CAMLlocal1(result);
Connection *conn = (Connection *)data;
size_t length;
checkConnection(conn);
result = caml_callback_exn(Field(conn->ocamlValues, Ocaml_READFUNCTION),
Val_int(size*nmemb));
size_t r = CURL_READFUNC_ABORT;
if (!Is_exception_result(result))
{
if (Is_block(result)) /* Proceed */
{
result = Field(result,0);
length = caml_string_length(result);
if (length <= size*nmemb)
{
memcpy(ptr, String_val(result), length);
r = length;
}
}
else
{
if (0 == Int_val(result)) /* Pause */
r = CURL_READFUNC_PAUSE;
/* else 1 = Abort */
}
}
CAMLdrop;
caml_enter_blocking_section();
return r;
}
static size_t cb_HEADERFUNCTION(char *ptr, size_t size, size_t nmemb, void *data)
{
caml_leave_blocking_section();
CAMLparam0();
CAMLlocal2(result,str);
Connection *conn = (Connection *)data;
checkConnection(conn);
str = ml_copy_string(ptr,size*nmemb);
result = caml_callback_exn(Field(conn->ocamlValues, Ocaml_HEADERFUNCTION), str);
size_t r = Is_exception_result(result) ? 0 : Int_val(result);
CAMLdrop;
caml_enter_blocking_section();
return r;
}
static int cb_PROGRESSFUNCTION(void *data,
double dlTotal,
double dlNow,
double ulTotal,
double ulNow)
{
caml_leave_blocking_section();
CAMLparam0();
CAMLlocal1(result);
CAMLlocalN(callbackData, 4);
Connection *conn = (Connection *)data;
checkConnection(conn);
callbackData[0] = caml_copy_double(dlTotal);
callbackData[1] = caml_copy_double(dlNow);
callbackData[2] = caml_copy_double(ulTotal);
callbackData[3] = caml_copy_double(ulNow);
result = caml_callbackN_exn(Field(conn->ocamlValues, Ocaml_PROGRESSFUNCTION),
4, callbackData);
int r = Is_exception_result(result) ? 1 : Bool_val(result);
CAMLdrop;
caml_enter_blocking_section();
return r;
}
static int cb_XFERINFOFUNCTION(void *data,
curl_off_t dlTotal,
curl_off_t dlNow,
curl_off_t ulTotal,