The Tor Browser: toolkit/crashreporter/google-breakpad/src/third_party/curl/multi.h@129ffea94266 (annotated)

toolkit/crashreporter/google-breakpad/src/third_party/curl/multi.h@129ffea94266 (annotated)

toolkit/crashreporter/google-breakpad/src/third_party/curl/multi.h

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 #ifndef __CURL_MULTI_H
 #define __CURL_MULTI_H
 /***************************************************************************
  *                                  _   _ ____  _
  *  Project                     ___| | | |  _ \| |
  *                             / __| | | | |_) | |
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
  * Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
  * are also available at http://curl.haxx.se/docs/copyright.html.
  *
  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  * copies of the Software, and permit persons to whom the Software is
  * furnished to do so, under the terms of the COPYING file.
  *
  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  * KIND, either express or implied.
  *
  * $Id: multi.h,v 1.45 2008-05-20 10:21:50 patrickm Exp $
  ***************************************************************************/
 /*
   This is an "external" header file. Don't give away any internals here!
   GOALS
   o Enable a "pull" interface. The application that uses libcurl decides where
     and when to ask libcurl to get/send data.
   o Enable multiple simultaneous transfers in the same thread without making it
     complicated for the application.
   o Enable the application to select() on its own file descriptors and curl's
     file descriptors simultaneous easily.
 */
 /*
  * This header file should not really need to include "curl.h" since curl.h
  * itself includes this file and we expect user applications to do #include
  * <curl/curl.h> without the need for especially including multi.h.
  *
  * For some reason we added this include here at one point, and rather than to
  * break existing (wrongly written) libcurl applications, we leave it as-is
  * but with this warning attached.
  */
 #include "curl.h"
 #ifdef  __cplusplus
 extern "C" {
 #endif
 typedef void CURLM;
 typedef enum {
   CURLM_CALL_MULTI_PERFORM = -1, /* please call curl_multi_perform() or
                                     curl_multi_socket*() soon */
   CURLM_OK,
   CURLM_BAD_HANDLE,      /* the passed-in handle is not a valid CURLM handle */
   CURLM_BAD_EASY_HANDLE, /* an easy handle was not good/valid */
   CURLM_OUT_OF_MEMORY,   /* if you ever get this, you're in deep sh*t */
   CURLM_INTERNAL_ERROR,  /* this is a libcurl bug */
   CURLM_BAD_SOCKET,      /* the passed in socket argument did not match */
   CURLM_UNKNOWN_OPTION,  /* curl_multi_setopt() with unsupported option */
   CURLM_LAST
 } CURLMcode;
 /* just to make code nicer when using curl_multi_socket() you can now check
    for CURLM_CALL_MULTI_SOCKET too in the same style it works for
    curl_multi_perform() and CURLM_CALL_MULTI_PERFORM */
 #define CURLM_CALL_MULTI_SOCKET CURLM_CALL_MULTI_PERFORM
 typedef enum {
   CURLMSG_NONE, /* first, not used */
   CURLMSG_DONE, /* This easy handle has completed. 'result' contains
                    the CURLcode of the transfer */
   CURLMSG_LAST /* last, not used */
 } CURLMSG;
 struct CURLMsg {
   CURLMSG msg;       /* what this message means */
   CURL *easy_handle; /* the handle it concerns */
   union {
     void *whatever;    /* message-specific data */
     CURLcode result;   /* return code for transfer */
   } data;
 };
 typedef struct CURLMsg CURLMsg;
 /*
  * Name:    curl_multi_init()
  *
  * Desc:    inititalize multi-style curl usage
  *
  * Returns: a new CURLM handle to use in all 'curl_multi' functions.
  */
 CURL_EXTERN CURLM *curl_multi_init(void);
 /*
  * Name:    curl_multi_add_handle()
  *
  * Desc:    add a standard curl handle to the multi stack
  *
  * Returns: CURLMcode type, general multi error code.
  */
 CURL_EXTERN CURLMcode curl_multi_add_handle(CURLM *multi_handle,
                                             CURL *curl_handle);
  /*
   * Name:    curl_multi_remove_handle()
   *
   * Desc:    removes a curl handle from the multi stack again
   *
   * Returns: CURLMcode type, general multi error code.
   */
 CURL_EXTERN CURLMcode curl_multi_remove_handle(CURLM *multi_handle,
                                                CURL *curl_handle);
  /*
   * Name:    curl_multi_fdset()
   *
   * Desc:    Ask curl for its fd_set sets. The app can use these to select() or
   *          poll() on. We want curl_multi_perform() called as soon as one of
   *          them are ready.
   *
   * Returns: CURLMcode type, general multi error code.
   */
 CURL_EXTERN CURLMcode curl_multi_fdset(CURLM *multi_handle,
                                        fd_set *read_fd_set,
                                        fd_set *write_fd_set,
                                        fd_set *exc_fd_set,
                                        int *max_fd);
  /*
   * Name:    curl_multi_perform()
   *
   * Desc:    When the app thinks there's data available for curl it calls this
   *          function to read/write whatever there is right now. This returns
   *          as soon as the reads and writes are done. This function does not
   *          require that there actually is data available for reading or that
   *          data can be written, it can be called just in case. It returns
   *          the number of handles that still transfer data in the second
   *          argument's integer-pointer.
   *
   * Returns: CURLMcode type, general multi error code. *NOTE* that this only
   *          returns errors etc regarding the whole multi stack. There might
   *          still have occurred problems on invidual transfers even when this
   *          returns OK.
   */
 CURL_EXTERN CURLMcode curl_multi_perform(CURLM *multi_handle,
                                          int *running_handles);
  /*
   * Name:    curl_multi_cleanup()
   *
   * Desc:    Cleans up and removes a whole multi stack. It does not free or
   *          touch any individual easy handles in any way. We need to define
   *          in what state those handles will be if this function is called
   *          in the middle of a transfer.
   *
   * Returns: CURLMcode type, general multi error code.
   */
 CURL_EXTERN CURLMcode curl_multi_cleanup(CURLM *multi_handle);
 /*
  * Name:    curl_multi_info_read()
  *
  * Desc:    Ask the multi handle if there's any messages/informationals from
  *          the individual transfers. Messages include informationals such as
  *          error code from the transfer or just the fact that a transfer is
  *          completed. More details on these should be written down as well.
  *
  *          Repeated calls to this function will return a new struct each
  *          time, until a special "end of msgs" struct is returned as a signal
  *          that there is no more to get at this point.
  *
  *          The data the returned pointer points to will not survive calling
  *          curl_multi_cleanup().
  *
  *          The 'CURLMsg' struct is meant to be very simple and only contain
  *          very basic informations. If more involved information is wanted,
  *          we will provide the particular "transfer handle" in that struct
  *          and that should/could/would be used in subsequent
  *          curl_easy_getinfo() calls (or similar). The point being that we
  *          must never expose complex structs to applications, as then we'll
  *          undoubtably get backwards compatibility problems in the future.
  *
  * Returns: A pointer to a filled-in struct, or NULL if it failed or ran out
  *          of structs. It also writes the number of messages left in the
  *          queue (after this read) in the integer the second argument points
  *          to.
  */
 CURL_EXTERN CURLMsg *curl_multi_info_read(CURLM *multi_handle,
                                           int *msgs_in_queue);
 /*
  * Name:    curl_multi_strerror()
  *
  * Desc:    The curl_multi_strerror function may be used to turn a CURLMcode
  *          value into the equivalent human readable error string.  This is
  *          useful for printing meaningful error messages.
  *
  * Returns: A pointer to a zero-terminated error message.
  */
 CURL_EXTERN const char *curl_multi_strerror(CURLMcode);
 /*
  * Name:    curl_multi_socket() and
  *          curl_multi_socket_all()
  *
  * Desc:    An alternative version of curl_multi_perform() that allows the
  *          application to pass in one of the file descriptors that have been
  *          detected to have "action" on them and let libcurl perform.
  *          See man page for details.
  */
 #define CURL_POLL_NONE   0
 #define CURL_POLL_IN     1
 #define CURL_POLL_OUT    2
 #define CURL_POLL_INOUT  3
 #define CURL_POLL_REMOVE 4
 #define CURL_SOCKET_TIMEOUT CURL_SOCKET_BAD
 #define CURL_CSELECT_IN   0x01
 #define CURL_CSELECT_OUT  0x02
 #define CURL_CSELECT_ERR  0x04
 typedef int (*curl_socket_callback)(CURL *easy,      /* easy handle */
                                     curl_socket_t s, /* socket */
                                     int what,        /* see above */
                                     void *userp,     /* private callback
                                                         pointer */
                                     void *socketp);  /* private socket
                                                         pointer */
 /*
  * Name:    curl_multi_timer_callback
  *
  * Desc:    Called by libcurl whenever the library detects a change in the
  *          maximum number of milliseconds the app is allowed to wait before
  *          curl_multi_socket() or curl_multi_perform() must be called
  *          (to allow libcurl's timed events to take place).
  *
  * Returns: The callback should return zero.
  */
 typedef int (*curl_multi_timer_callback)(CURLM *multi,    /* multi handle */
                                          long timeout_ms, /* see above */
                                          void *userp);    /* private callback
                                                              pointer */
 CURL_EXTERN CURLMcode curl_multi_socket(CURLM *multi_handle, curl_socket_t s,
                                         int *running_handles);
 CURL_EXTERN CURLMcode curl_multi_socket_action(CURLM *multi_handle,
                                                curl_socket_t s,
                                                int ev_bitmask,
                                                int *running_handles);
 CURL_EXTERN CURLMcode curl_multi_socket_all(CURLM *multi_handle,
                                             int *running_handles);
 #ifndef CURL_ALLOW_OLD_MULTI_SOCKET
 /* This macro below was added in 7.16.3 to push users who recompile to use
    the new curl_multi_socket_action() instead of the old curl_multi_socket()
 */
 #define curl_multi_socket(x,y,z) curl_multi_socket_action(x,y,0,z)
 #endif
 /*
  * Name:    curl_multi_timeout()
  *
  * Desc:    Returns the maximum number of milliseconds the app is allowed to
  *          wait before curl_multi_socket() or curl_multi_perform() must be
  *          called (to allow libcurl's timed events to take place).
  *
  * Returns: CURLM error code.
  */
 CURL_EXTERN CURLMcode curl_multi_timeout(CURLM *multi_handle,
                                          long *milliseconds);
 #undef CINIT /* re-using the same name as in curl.h */
 #ifdef CURL_ISOCPP
 #define CINIT(name,type,num) CURLMOPT_ ## name = CURLOPTTYPE_ ## type + num
 #else
 /* The macro "##" is ISO C, we assume pre-ISO C doesn't support it. */
 #define LONG          CURLOPTTYPE_LONG
 #define OBJECTPOINT   CURLOPTTYPE_OBJECTPOINT
 #define FUNCTIONPOINT CURLOPTTYPE_FUNCTIONPOINT
 #define OFF_T         CURLOPTTYPE_OFF_T
 #define CINIT(name,type,number) CURLMOPT_/**/name = type + number
 #endif
 typedef enum {
   /* This is the socket callback function pointer */
   CINIT(SOCKETFUNCTION, FUNCTIONPOINT, 1),
   /* This is the argument passed to the socket callback */
   CINIT(SOCKETDATA, OBJECTPOINT, 2),
     /* set to 1 to enable pipelining for this multi handle */
   CINIT(PIPELINING, LONG, 3),
    /* This is the timer callback function pointer */
   CINIT(TIMERFUNCTION, FUNCTIONPOINT, 4),
   /* This is the argument passed to the timer callback */
   CINIT(TIMERDATA, OBJECTPOINT, 5),
   /* maximum number of entries in the connection cache */
   CINIT(MAXCONNECTS, LONG, 6),
   CURLMOPT_LASTENTRY /* the last unused */
 } CURLMoption;
 /*
  * Name:    curl_multi_setopt()
  *
  * Desc:    Sets options for the multi handle.
  *
  * Returns: CURLM error code.
  */
 CURL_EXTERN CURLMcode curl_multi_setopt(CURLM *multi_handle,
                                         CURLMoption option, ...);
 /*
  * Name:    curl_multi_assign()
  *
  * Desc:    This function sets an association in the multi handle between the
  *          given socket and a private pointer of the application. This is
  *          (only) useful for curl_multi_socket uses.
  *
  * Returns: CURLM error code.
  */
 CURL_EXTERN CURLMcode curl_multi_assign(CURLM *multi_handle,
                                         curl_socket_t sockfd, void *sockp);
 #ifdef __cplusplus
 } /* end of extern "C" */
 #endif
 #endif

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toolkit/crashreporter/google-breakpad/src/third_party/curl/multi.h@129ffea94266 (annotated)

toolkit/crashreporter/google-breakpad/src/third_party/curl/multi.h