[337] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | ***************************************************************************/
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| 22 |
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| 23 | /***
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| 24 |
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| 25 |
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| 26 | RECEIVING COOKIE INFORMATION
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| 27 | ============================
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| 28 |
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| 29 | struct CookieInfo *Curl_cookie_init(struct Curl_easy *data,
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| 30 | const char *file, struct CookieInfo *inc, bool newsession);
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| 31 |
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| 32 | Inits a cookie struct to store data in a local file. This is always
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| 33 | called before any cookies are set.
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| 34 |
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| 35 | struct Cookie *Curl_cookie_add(struct Curl_easy *data,
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| 36 | struct CookieInfo *c, bool httpheader, char *lineptr,
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| 37 | const char *domain, const char *path);
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| 38 |
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| 39 | The 'lineptr' parameter is a full "Set-cookie:" line as
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| 40 | received from a server.
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| 41 |
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| 42 | The function need to replace previously stored lines that this new
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| 43 | line superceeds.
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| 44 |
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| 45 | It may remove lines that are expired.
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| 46 |
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| 47 | It should return an indication of success/error.
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| 48 |
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| 49 |
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| 50 | SENDING COOKIE INFORMATION
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| 51 | ==========================
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| 52 |
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| 53 | struct Cookies *Curl_cookie_getlist(struct CookieInfo *cookie,
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| 54 | char *host, char *path, bool secure);
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| 55 |
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| 56 | For a given host and path, return a linked list of cookies that
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| 57 | the client should send to the server if used now. The secure
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| 58 | boolean informs the cookie if a secure connection is achieved or
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| 59 | not.
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| 60 |
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| 61 | It shall only return cookies that haven't expired.
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| 62 |
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| 63 |
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| 64 | Example set of cookies:
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| 65 |
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| 66 | Set-cookie: PRODUCTINFO=webxpress; domain=.fidelity.com; path=/; secure
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| 67 | Set-cookie: PERSONALIZE=none;expires=Monday, 13-Jun-1988 03:04:55 GMT;
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| 68 | domain=.fidelity.com; path=/ftgw; secure
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| 69 | Set-cookie: FidHist=none;expires=Monday, 13-Jun-1988 03:04:55 GMT;
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| 70 | domain=.fidelity.com; path=/; secure
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| 71 | Set-cookie: FidOrder=none;expires=Monday, 13-Jun-1988 03:04:55 GMT;
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| 72 | domain=.fidelity.com; path=/; secure
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| 73 | Set-cookie: DisPend=none;expires=Monday, 13-Jun-1988 03:04:55 GMT;
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| 74 | domain=.fidelity.com; path=/; secure
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| 75 | Set-cookie: FidDis=none;expires=Monday, 13-Jun-1988 03:04:55 GMT;
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| 76 | domain=.fidelity.com; path=/; secure
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| 77 | Set-cookie:
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| 78 | Session_Key@6791a9e0-901a-11d0-a1c8-9b012c88aa77=none;expires=Monday,
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| 79 | 13-Jun-1988 03:04:55 GMT; domain=.fidelity.com; path=/; secure
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| 80 | ****/
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| 81 |
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| 82 |
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| 83 | #include "curl_setup.h"
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| 84 |
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| 85 | #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
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| 86 |
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| 87 | #ifdef USE_LIBPSL
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| 88 | # include <libpsl.h>
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| 89 | #endif
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| 90 |
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| 91 | #include "urldata.h"
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| 92 | #include "cookie.h"
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| 93 | #include "strtok.h"
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| 94 | #include "sendf.h"
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| 95 | #include "slist.h"
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| 96 | #include "share.h"
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| 97 | #include "strtoofft.h"
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| 98 | #include "strcase.h"
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| 99 | #include "curl_memrchr.h"
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| 100 | #include "inet_pton.h"
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| 101 |
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| 102 | /* The last 3 #include files should be in this order */
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| 103 | #include "curl_printf.h"
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| 104 | #include "curl_memory.h"
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| 105 | #include "memdebug.h"
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| 106 |
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| 107 | static void freecookie(struct Cookie *co)
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| 108 | {
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| 109 | free(co->expirestr);
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| 110 | free(co->domain);
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| 111 | free(co->path);
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| 112 | free(co->spath);
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| 113 | free(co->name);
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| 114 | free(co->value);
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| 115 | free(co->maxage);
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| 116 | free(co->version);
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| 117 | free(co);
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| 118 | }
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| 119 |
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| 120 | static bool tailmatch(const char *cooke_domain, const char *hostname)
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| 121 | {
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| 122 | size_t cookie_domain_len = strlen(cooke_domain);
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| 123 | size_t hostname_len = strlen(hostname);
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| 124 |
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| 125 | if(hostname_len < cookie_domain_len)
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| 126 | return FALSE;
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| 127 |
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| 128 | if(!strcasecompare(cooke_domain, hostname + hostname_len-cookie_domain_len))
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| 129 | return FALSE;
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| 130 |
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| 131 | /* A lead char of cookie_domain is not '.'.
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| 132 | RFC6265 4.1.2.3. The Domain Attribute says:
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| 133 | For example, if the value of the Domain attribute is
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| 134 | "example.com", the user agent will include the cookie in the Cookie
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| 135 | header when making HTTP requests to example.com, www.example.com, and
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| 136 | www.corp.example.com.
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| 137 | */
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| 138 | if(hostname_len == cookie_domain_len)
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| 139 | return TRUE;
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| 140 | if('.' == *(hostname + hostname_len - cookie_domain_len - 1))
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| 141 | return TRUE;
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| 142 | return FALSE;
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| 143 | }
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| 144 |
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| 145 | /*
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| 146 | * matching cookie path and url path
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| 147 | * RFC6265 5.1.4 Paths and Path-Match
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| 148 | */
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| 149 | static bool pathmatch(const char *cookie_path, const char *request_uri)
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| 150 | {
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| 151 | size_t cookie_path_len;
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| 152 | size_t uri_path_len;
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| 153 | char *uri_path = NULL;
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| 154 | char *pos;
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| 155 | bool ret = FALSE;
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| 156 |
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| 157 | /* cookie_path must not have last '/' separator. ex: /sample */
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| 158 | cookie_path_len = strlen(cookie_path);
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| 159 | if(1 == cookie_path_len) {
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| 160 | /* cookie_path must be '/' */
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| 161 | return TRUE;
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| 162 | }
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| 163 |
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| 164 | uri_path = strdup(request_uri);
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| 165 | if(!uri_path)
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| 166 | return FALSE;
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| 167 | pos = strchr(uri_path, '?');
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| 168 | if(pos)
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| 169 | *pos = 0x0;
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| 170 |
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| 171 | /* #-fragments are already cut off! */
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| 172 | if(0 == strlen(uri_path) || uri_path[0] != '/') {
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| 173 | free(uri_path);
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| 174 | uri_path = strdup("/");
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| 175 | if(!uri_path)
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| 176 | return FALSE;
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| 177 | }
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| 178 |
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| 179 | /* here, RFC6265 5.1.4 says
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| 180 | 4. Output the characters of the uri-path from the first character up
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| 181 | to, but not including, the right-most %x2F ("/").
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| 182 | but URL path /hoge?fuga=xxx means /hoge/index.cgi?fuga=xxx in some site
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| 183 | without redirect.
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| 184 | Ignore this algorithm because /hoge is uri path for this case
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| 185 | (uri path is not /).
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| 186 | */
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| 187 |
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| 188 | uri_path_len = strlen(uri_path);
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| 189 |
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| 190 | if(uri_path_len < cookie_path_len) {
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| 191 | ret = FALSE;
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| 192 | goto pathmatched;
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| 193 | }
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| 194 |
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| 195 | /* not using checkprefix() because matching should be case-sensitive */
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| 196 | if(strncmp(cookie_path, uri_path, cookie_path_len)) {
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| 197 | ret = FALSE;
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| 198 | goto pathmatched;
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| 199 | }
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| 200 |
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| 201 | /* The cookie-path and the uri-path are identical. */
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| 202 | if(cookie_path_len == uri_path_len) {
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| 203 | ret = TRUE;
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| 204 | goto pathmatched;
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| 205 | }
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| 206 |
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| 207 | /* here, cookie_path_len < url_path_len */
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| 208 | if(uri_path[cookie_path_len] == '/') {
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| 209 | ret = TRUE;
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| 210 | goto pathmatched;
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| 211 | }
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| 212 |
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| 213 | ret = FALSE;
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| 214 |
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| 215 | pathmatched:
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| 216 | free(uri_path);
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| 217 | return ret;
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| 218 | }
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| 219 |
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| 220 | /*
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| 221 | * cookie path sanitize
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| 222 | */
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| 223 | static char *sanitize_cookie_path(const char *cookie_path)
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| 224 | {
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| 225 | size_t len;
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| 226 | char *new_path = strdup(cookie_path);
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| 227 | if(!new_path)
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| 228 | return NULL;
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| 229 |
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| 230 | /* some stupid site sends path attribute with '"'. */
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| 231 | len = strlen(new_path);
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| 232 | if(new_path[0] == '\"') {
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| 233 | memmove((void *)new_path, (const void *)(new_path + 1), len);
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| 234 | len--;
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| 235 | }
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| 236 | if(len && (new_path[len - 1] == '\"')) {
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| 237 | new_path[len - 1] = 0x0;
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| 238 | len--;
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| 239 | }
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| 240 |
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| 241 | /* RFC6265 5.2.4 The Path Attribute */
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| 242 | if(new_path[0] != '/') {
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| 243 | /* Let cookie-path be the default-path. */
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| 244 | free(new_path);
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| 245 | new_path = strdup("/");
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| 246 | return new_path;
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| 247 | }
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| 248 |
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| 249 | /* convert /hoge/ to /hoge */
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| 250 | if(len && new_path[len - 1] == '/') {
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| 251 | new_path[len - 1] = 0x0;
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| 252 | }
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| 253 |
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| 254 | return new_path;
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| 255 | }
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| 256 |
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| 257 | /*
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| 258 | * Load cookies from all given cookie files (CURLOPT_COOKIEFILE).
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| 259 | *
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| 260 | * NOTE: OOM or cookie parsing failures are ignored.
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| 261 | */
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| 262 | void Curl_cookie_loadfiles(struct Curl_easy *data)
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| 263 | {
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| 264 | struct curl_slist *list = data->change.cookielist;
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| 265 | if(list) {
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| 266 | Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
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| 267 | while(list) {
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| 268 | struct CookieInfo *newcookies = Curl_cookie_init(data,
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| 269 | list->data,
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| 270 | data->cookies,
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| 271 | data->set.cookiesession);
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| 272 | if(!newcookies)
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| 273 | /* Failure may be due to OOM or a bad cookie; both are ignored
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| 274 | * but only the first should be
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| 275 | */
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| 276 | infof(data, "ignoring failed cookie_init for %s\n", list->data);
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| 277 | else
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| 278 | data->cookies = newcookies;
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| 279 | list = list->next;
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| 280 | }
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| 281 | curl_slist_free_all(data->change.cookielist); /* clean up list */
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| 282 | data->change.cookielist = NULL; /* don't do this again! */
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| 283 | Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
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| 284 | }
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| 285 | }
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| 286 |
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| 287 | /*
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| 288 | * strstore() makes a strdup() on the 'newstr' and if '*str' is non-NULL
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| 289 | * that will be freed before the allocated string is stored there.
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| 290 | *
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| 291 | * It is meant to easily replace strdup()
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| 292 | */
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| 293 | static void strstore(char **str, const char *newstr)
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| 294 | {
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| 295 | free(*str);
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| 296 | *str = strdup(newstr);
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| 297 | }
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| 298 |
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| 299 | /*
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| 300 | * remove_expired() removes expired cookies.
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| 301 | */
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| 302 | static void remove_expired(struct CookieInfo *cookies)
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| 303 | {
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| 304 | struct Cookie *co, *nx, *pv;
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| 305 | curl_off_t now = (curl_off_t)time(NULL);
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| 306 |
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| 307 | co = cookies->cookies;
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| 308 | pv = NULL;
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| 309 | while(co) {
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| 310 | nx = co->next;
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| 311 | if(co->expires && co->expires < now) {
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| 312 | if(!pv) {
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| 313 | cookies->cookies = co->next;
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| 314 | }
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| 315 | else {
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| 316 | pv->next = co->next;
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| 317 | }
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| 318 | cookies->numcookies--;
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| 319 | freecookie(co);
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| 320 | }
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| 321 | else {
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| 322 | pv = co;
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| 323 | }
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| 324 | co = nx;
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| 325 | }
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| 326 | }
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| 327 |
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| 328 | /*
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| 329 | * Return true if the given string is an IP(v4|v6) address.
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| 330 | */
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| 331 | static bool isip(const char *domain)
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| 332 | {
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| 333 | struct in_addr addr;
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| 334 | #ifdef ENABLE_IPV6
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| 335 | struct in6_addr addr6;
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| 336 | #endif
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| 337 |
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| 338 | if(Curl_inet_pton(AF_INET, domain, &addr)
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| 339 | #ifdef ENABLE_IPV6
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| 340 | || Curl_inet_pton(AF_INET6, domain, &addr6)
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| 341 | #endif
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| 342 | ) {
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| 343 | /* domain name given as IP address */
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| 344 | return TRUE;
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| 345 | }
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| 346 |
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| 347 | return FALSE;
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| 348 | }
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| 349 |
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| 350 | /****************************************************************************
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| 351 | *
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| 352 | * Curl_cookie_add()
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| 353 | *
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| 354 | * Add a single cookie line to the cookie keeping object.
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| 355 | *
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| 356 | * Be aware that sometimes we get an IP-only host name, and that might also be
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| 357 | * a numerical IPv6 address.
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| 358 | *
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| 359 | * Returns NULL on out of memory or invalid cookie. This is suboptimal,
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| 360 | * as they should be treated separately.
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| 361 | ***************************************************************************/
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| 362 |
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| 363 | struct Cookie *
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| 364 | Curl_cookie_add(struct Curl_easy *data,
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| 365 | /* The 'data' pointer here may be NULL at times, and thus
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| 366 | must only be used very carefully for things that can deal
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| 367 | with data being NULL. Such as infof() and similar */
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| 368 |
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| 369 | struct CookieInfo *c,
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| 370 | bool httpheader, /* TRUE if HTTP header-style line */
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| 371 | char *lineptr, /* first character of the line */
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| 372 | const char *domain, /* default domain */
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| 373 | const char *path) /* full path used when this cookie is set,
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| 374 | used to get default path for the cookie
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| 375 | unless set */
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| 376 | {
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| 377 | struct Cookie *clist;
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| 378 | struct Cookie *co;
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| 379 | struct Cookie *lastc = NULL;
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| 380 | time_t now = time(NULL);
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| 381 | bool replace_old = FALSE;
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| 382 | bool badcookie = FALSE; /* cookies are good by default. mmmmm yummy */
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| 383 |
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| 384 | #ifdef USE_LIBPSL
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| 385 | const psl_ctx_t *psl;
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| 386 | #endif
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| 387 |
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| 388 | #ifdef CURL_DISABLE_VERBOSE_STRINGS
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| 389 | (void)data;
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| 390 | #endif
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| 391 |
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| 392 | /* First, alloc and init a new struct for it */
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| 393 | co = calloc(1, sizeof(struct Cookie));
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| 394 | if(!co)
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| 395 | return NULL; /* bail out if we're this low on memory */
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| 396 |
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| 397 | if(httpheader) {
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| 398 | /* This line was read off a HTTP-header */
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| 399 | char name[MAX_NAME];
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| 400 | char what[MAX_NAME];
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| 401 | const char *ptr;
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| 402 | const char *semiptr;
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| 403 |
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| 404 | size_t linelength = strlen(lineptr);
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| 405 | if(linelength > MAX_COOKIE_LINE) {
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| 406 | /* discard overly long lines at once */
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| 407 | free(co);
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| 408 | return NULL;
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| 409 | }
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| 410 |
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| 411 | semiptr = strchr(lineptr, ';'); /* first, find a semicolon */
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| 412 |
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| 413 | while(*lineptr && ISBLANK(*lineptr))
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| 414 | lineptr++;
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| 415 |
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| 416 | ptr = lineptr;
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| 417 | do {
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| 418 | /* we have a <what>=<this> pair or a stand-alone word here */
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| 419 | name[0] = what[0] = 0; /* init the buffers */
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| 420 | if(1 <= sscanf(ptr, "%" MAX_NAME_TXT "[^;\r\n=] =%"
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| 421 | MAX_NAME_TXT "[^;\r\n]",
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| 422 | name, what)) {
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| 423 | /* Use strstore() below to properly deal with received cookie
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| 424 | headers that have the same string property set more than once,
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| 425 | and then we use the last one. */
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| 426 | const char *whatptr;
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| 427 | bool done = FALSE;
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| 428 | bool sep;
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| 429 | size_t len = strlen(what);
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| 430 | size_t nlen = strlen(name);
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| 431 | const char *endofn = &ptr[ nlen ];
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| 432 |
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| 433 | infof(data, "cookie size: name/val %d + %d bytes\n",
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| 434 | nlen, len);
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| 435 |
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| 436 | if(nlen >= (MAX_NAME-1) || len >= (MAX_NAME-1) ||
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| 437 | ((nlen + len) > MAX_NAME)) {
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| 438 | /* too long individual name or contents, or too long combination of
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| 439 | name + contents. Chrome and Firefox support 4095 or 4096 bytes
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| 440 | combo. */
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| 441 | freecookie(co);
|
---|
| 442 | infof(data, "oversized cookie dropped, name/val %d + %d bytes\n",
|
---|
| 443 | nlen, len);
|
---|
| 444 | return NULL;
|
---|
| 445 | }
|
---|
| 446 |
|
---|
| 447 | /* name ends with a '=' ? */
|
---|
| 448 | sep = (*endofn == '=')?TRUE:FALSE;
|
---|
| 449 |
|
---|
| 450 | if(nlen) {
|
---|
| 451 | endofn--; /* move to the last character */
|
---|
| 452 | if(ISBLANK(*endofn)) {
|
---|
| 453 | /* skip trailing spaces in name */
|
---|
| 454 | while(*endofn && ISBLANK(*endofn) && nlen) {
|
---|
| 455 | endofn--;
|
---|
| 456 | nlen--;
|
---|
| 457 | }
|
---|
| 458 | name[nlen] = 0; /* new end of name */
|
---|
| 459 | }
|
---|
| 460 | }
|
---|
| 461 |
|
---|
| 462 | /* Strip off trailing whitespace from the 'what' */
|
---|
| 463 | while(len && ISBLANK(what[len-1])) {
|
---|
| 464 | what[len-1] = 0;
|
---|
| 465 | len--;
|
---|
| 466 | }
|
---|
| 467 |
|
---|
| 468 | /* Skip leading whitespace from the 'what' */
|
---|
| 469 | whatptr = what;
|
---|
| 470 | while(*whatptr && ISBLANK(*whatptr))
|
---|
| 471 | whatptr++;
|
---|
| 472 |
|
---|
| 473 | if(!co->name && sep) {
|
---|
| 474 | /* The very first name/value pair is the actual cookie name */
|
---|
| 475 | co->name = strdup(name);
|
---|
| 476 | co->value = strdup(whatptr);
|
---|
| 477 | if(!co->name || !co->value) {
|
---|
| 478 | badcookie = TRUE;
|
---|
| 479 | break;
|
---|
| 480 | }
|
---|
| 481 | }
|
---|
| 482 | else if(!len) {
|
---|
| 483 | /* this was a "<name>=" with no content, and we must allow
|
---|
| 484 | 'secure' and 'httponly' specified this weirdly */
|
---|
| 485 | done = TRUE;
|
---|
| 486 | if(strcasecompare("secure", name))
|
---|
| 487 | co->secure = TRUE;
|
---|
| 488 | else if(strcasecompare("httponly", name))
|
---|
| 489 | co->httponly = TRUE;
|
---|
| 490 | else if(sep)
|
---|
| 491 | /* there was a '=' so we're not done parsing this field */
|
---|
| 492 | done = FALSE;
|
---|
| 493 | }
|
---|
| 494 | if(done)
|
---|
| 495 | ;
|
---|
| 496 | else if(strcasecompare("path", name)) {
|
---|
| 497 | strstore(&co->path, whatptr);
|
---|
| 498 | if(!co->path) {
|
---|
| 499 | badcookie = TRUE; /* out of memory bad */
|
---|
| 500 | break;
|
---|
| 501 | }
|
---|
| 502 | free(co->spath); /* if this is set again */
|
---|
| 503 | co->spath = sanitize_cookie_path(co->path);
|
---|
| 504 | if(!co->spath) {
|
---|
| 505 | badcookie = TRUE; /* out of memory bad */
|
---|
| 506 | break;
|
---|
| 507 | }
|
---|
| 508 | }
|
---|
| 509 | else if(strcasecompare("domain", name)) {
|
---|
| 510 | bool is_ip;
|
---|
| 511 |
|
---|
| 512 | /* Now, we make sure that our host is within the given domain,
|
---|
| 513 | or the given domain is not valid and thus cannot be set. */
|
---|
| 514 |
|
---|
| 515 | if('.' == whatptr[0])
|
---|
| 516 | whatptr++; /* ignore preceding dot */
|
---|
| 517 |
|
---|
| 518 | #ifndef USE_LIBPSL
|
---|
| 519 | /*
|
---|
| 520 | * Without PSL we don't know when the incoming cookie is set on a
|
---|
| 521 | * TLD or otherwise "protected" suffix. To reduce risk, we require a
|
---|
| 522 | * dot OR the exact host name being "localhost".
|
---|
| 523 | */
|
---|
| 524 | {
|
---|
| 525 | const char *dotp;
|
---|
| 526 | /* check for more dots */
|
---|
| 527 | dotp = strchr(whatptr, '.');
|
---|
| 528 | if(!dotp && !strcasecompare("localhost", whatptr))
|
---|
| 529 | domain = ":";
|
---|
| 530 | }
|
---|
| 531 | #endif
|
---|
| 532 |
|
---|
| 533 | is_ip = isip(domain ? domain : whatptr);
|
---|
| 534 |
|
---|
| 535 | if(!domain
|
---|
| 536 | || (is_ip && !strcmp(whatptr, domain))
|
---|
| 537 | || (!is_ip && tailmatch(whatptr, domain))) {
|
---|
| 538 | strstore(&co->domain, whatptr);
|
---|
| 539 | if(!co->domain) {
|
---|
| 540 | badcookie = TRUE;
|
---|
| 541 | break;
|
---|
| 542 | }
|
---|
| 543 | if(!is_ip)
|
---|
| 544 | co->tailmatch = TRUE; /* we always do that if the domain name was
|
---|
| 545 | given */
|
---|
| 546 | }
|
---|
| 547 | else {
|
---|
| 548 | /* we did not get a tailmatch and then the attempted set domain
|
---|
| 549 | is not a domain to which the current host belongs. Mark as
|
---|
| 550 | bad. */
|
---|
| 551 | badcookie = TRUE;
|
---|
| 552 | infof(data, "skipped cookie with bad tailmatch domain: %s\n",
|
---|
| 553 | whatptr);
|
---|
| 554 | }
|
---|
| 555 | }
|
---|
| 556 | else if(strcasecompare("version", name)) {
|
---|
| 557 | strstore(&co->version, whatptr);
|
---|
| 558 | if(!co->version) {
|
---|
| 559 | badcookie = TRUE;
|
---|
| 560 | break;
|
---|
| 561 | }
|
---|
| 562 | }
|
---|
| 563 | else if(strcasecompare("max-age", name)) {
|
---|
| 564 | /* Defined in RFC2109:
|
---|
| 565 |
|
---|
| 566 | Optional. The Max-Age attribute defines the lifetime of the
|
---|
| 567 | cookie, in seconds. The delta-seconds value is a decimal non-
|
---|
| 568 | negative integer. After delta-seconds seconds elapse, the
|
---|
| 569 | client should discard the cookie. A value of zero means the
|
---|
| 570 | cookie should be discarded immediately.
|
---|
| 571 |
|
---|
| 572 | */
|
---|
| 573 | strstore(&co->maxage, whatptr);
|
---|
| 574 | if(!co->maxage) {
|
---|
| 575 | badcookie = TRUE;
|
---|
| 576 | break;
|
---|
| 577 | }
|
---|
| 578 | }
|
---|
| 579 | else if(strcasecompare("expires", name)) {
|
---|
| 580 | strstore(&co->expirestr, whatptr);
|
---|
| 581 | if(!co->expirestr) {
|
---|
| 582 | badcookie = TRUE;
|
---|
| 583 | break;
|
---|
| 584 | }
|
---|
| 585 | }
|
---|
| 586 | /*
|
---|
| 587 | else this is the second (or more) name we don't know
|
---|
| 588 | about! */
|
---|
| 589 | }
|
---|
| 590 | else {
|
---|
| 591 | /* this is an "illegal" <what>=<this> pair */
|
---|
| 592 | }
|
---|
| 593 |
|
---|
| 594 | if(!semiptr || !*semiptr) {
|
---|
| 595 | /* we already know there are no more cookies */
|
---|
| 596 | semiptr = NULL;
|
---|
| 597 | continue;
|
---|
| 598 | }
|
---|
| 599 |
|
---|
| 600 | ptr = semiptr + 1;
|
---|
| 601 | while(*ptr && ISBLANK(*ptr))
|
---|
| 602 | ptr++;
|
---|
| 603 | semiptr = strchr(ptr, ';'); /* now, find the next semicolon */
|
---|
| 604 |
|
---|
| 605 | if(!semiptr && *ptr)
|
---|
| 606 | /* There are no more semicolons, but there's a final name=value pair
|
---|
| 607 | coming up */
|
---|
| 608 | semiptr = strchr(ptr, '\0');
|
---|
| 609 | } while(semiptr);
|
---|
| 610 |
|
---|
| 611 | if(co->maxage) {
|
---|
| 612 | CURLofft offt;
|
---|
| 613 | offt = curlx_strtoofft((*co->maxage == '\"')?
|
---|
| 614 | &co->maxage[1]:&co->maxage[0], NULL, 10,
|
---|
| 615 | &co->expires);
|
---|
| 616 | if(offt == CURL_OFFT_FLOW)
|
---|
| 617 | /* overflow, used max value */
|
---|
| 618 | co->expires = CURL_OFF_T_MAX;
|
---|
| 619 | else if(!offt) {
|
---|
| 620 | if(CURL_OFF_T_MAX - now < co->expires)
|
---|
| 621 | /* would overflow */
|
---|
| 622 | co->expires = CURL_OFF_T_MAX;
|
---|
| 623 | else
|
---|
| 624 | co->expires += now;
|
---|
| 625 | }
|
---|
| 626 | }
|
---|
| 627 | else if(co->expirestr) {
|
---|
| 628 | /* Note that if the date couldn't get parsed for whatever reason,
|
---|
| 629 | the cookie will be treated as a session cookie */
|
---|
| 630 | co->expires = curl_getdate(co->expirestr, NULL);
|
---|
| 631 |
|
---|
| 632 | /* Session cookies have expires set to 0 so if we get that back
|
---|
| 633 | from the date parser let's add a second to make it a
|
---|
| 634 | non-session cookie */
|
---|
| 635 | if(co->expires == 0)
|
---|
| 636 | co->expires = 1;
|
---|
| 637 | else if(co->expires < 0)
|
---|
| 638 | co->expires = 0;
|
---|
| 639 | }
|
---|
| 640 |
|
---|
| 641 | if(!badcookie && !co->domain) {
|
---|
| 642 | if(domain) {
|
---|
| 643 | /* no domain was given in the header line, set the default */
|
---|
| 644 | co->domain = strdup(domain);
|
---|
| 645 | if(!co->domain)
|
---|
| 646 | badcookie = TRUE;
|
---|
| 647 | }
|
---|
| 648 | }
|
---|
| 649 |
|
---|
| 650 | if(!badcookie && !co->path && path) {
|
---|
| 651 | /* No path was given in the header line, set the default.
|
---|
| 652 | Note that the passed-in path to this function MAY have a '?' and
|
---|
| 653 | following part that MUST not be stored as part of the path. */
|
---|
| 654 | char *queryp = strchr(path, '?');
|
---|
| 655 |
|
---|
| 656 | /* queryp is where the interesting part of the path ends, so now we
|
---|
| 657 | want to the find the last */
|
---|
| 658 | char *endslash;
|
---|
| 659 | if(!queryp)
|
---|
| 660 | endslash = strrchr(path, '/');
|
---|
| 661 | else
|
---|
| 662 | endslash = memrchr(path, '/', (size_t)(queryp - path));
|
---|
| 663 | if(endslash) {
|
---|
| 664 | size_t pathlen = (size_t)(endslash-path + 1); /* include end slash */
|
---|
| 665 | co->path = malloc(pathlen + 1); /* one extra for the zero byte */
|
---|
| 666 | if(co->path) {
|
---|
| 667 | memcpy(co->path, path, pathlen);
|
---|
| 668 | co->path[pathlen] = 0; /* zero terminate */
|
---|
| 669 | co->spath = sanitize_cookie_path(co->path);
|
---|
| 670 | if(!co->spath)
|
---|
| 671 | badcookie = TRUE; /* out of memory bad */
|
---|
| 672 | }
|
---|
| 673 | else
|
---|
| 674 | badcookie = TRUE;
|
---|
| 675 | }
|
---|
| 676 | }
|
---|
| 677 |
|
---|
| 678 | if(badcookie || !co->name) {
|
---|
| 679 | /* we didn't get a cookie name or a bad one,
|
---|
| 680 | this is an illegal line, bail out */
|
---|
| 681 | freecookie(co);
|
---|
| 682 | return NULL;
|
---|
| 683 | }
|
---|
| 684 |
|
---|
| 685 | }
|
---|
| 686 | else {
|
---|
| 687 | /* This line is NOT a HTTP header style line, we do offer support for
|
---|
| 688 | reading the odd netscape cookies-file format here */
|
---|
| 689 | char *ptr;
|
---|
| 690 | char *firstptr;
|
---|
| 691 | char *tok_buf = NULL;
|
---|
| 692 | int fields;
|
---|
| 693 |
|
---|
| 694 | /* IE introduced HTTP-only cookies to prevent XSS attacks. Cookies
|
---|
| 695 | marked with httpOnly after the domain name are not accessible
|
---|
| 696 | from javascripts, but since curl does not operate at javascript
|
---|
| 697 | level, we include them anyway. In Firefox's cookie files, these
|
---|
| 698 | lines are preceded with #HttpOnly_ and then everything is
|
---|
| 699 | as usual, so we skip 10 characters of the line..
|
---|
| 700 | */
|
---|
| 701 | if(strncmp(lineptr, "#HttpOnly_", 10) == 0) {
|
---|
| 702 | lineptr += 10;
|
---|
| 703 | co->httponly = TRUE;
|
---|
| 704 | }
|
---|
| 705 |
|
---|
| 706 | if(lineptr[0]=='#') {
|
---|
| 707 | /* don't even try the comments */
|
---|
| 708 | free(co);
|
---|
| 709 | return NULL;
|
---|
| 710 | }
|
---|
| 711 | /* strip off the possible end-of-line characters */
|
---|
| 712 | ptr = strchr(lineptr, '\r');
|
---|
| 713 | if(ptr)
|
---|
| 714 | *ptr = 0; /* clear it */
|
---|
| 715 | ptr = strchr(lineptr, '\n');
|
---|
| 716 | if(ptr)
|
---|
| 717 | *ptr = 0; /* clear it */
|
---|
| 718 |
|
---|
| 719 | firstptr = strtok_r(lineptr, "\t", &tok_buf); /* tokenize it on the TAB */
|
---|
| 720 |
|
---|
| 721 | /* Now loop through the fields and init the struct we already have
|
---|
| 722 | allocated */
|
---|
| 723 | for(ptr = firstptr, fields = 0; ptr && !badcookie;
|
---|
| 724 | ptr = strtok_r(NULL, "\t", &tok_buf), fields++) {
|
---|
| 725 | switch(fields) {
|
---|
| 726 | case 0:
|
---|
| 727 | if(ptr[0]=='.') /* skip preceding dots */
|
---|
| 728 | ptr++;
|
---|
| 729 | co->domain = strdup(ptr);
|
---|
| 730 | if(!co->domain)
|
---|
| 731 | badcookie = TRUE;
|
---|
| 732 | break;
|
---|
| 733 | case 1:
|
---|
| 734 | /* This field got its explanation on the 23rd of May 2001 by
|
---|
| 735 | Andr駸 Garc僘:
|
---|
| 736 |
|
---|
| 737 | flag: A TRUE/FALSE value indicating if all machines within a given
|
---|
| 738 | domain can access the variable. This value is set automatically by
|
---|
| 739 | the browser, depending on the value you set for the domain.
|
---|
| 740 |
|
---|
| 741 | As far as I can see, it is set to true when the cookie says
|
---|
| 742 | .domain.com and to false when the domain is complete www.domain.com
|
---|
| 743 | */
|
---|
| 744 | co->tailmatch = strcasecompare(ptr, "TRUE")?TRUE:FALSE;
|
---|
| 745 | break;
|
---|
| 746 | case 2:
|
---|
| 747 | /* It turns out, that sometimes the file format allows the path
|
---|
| 748 | field to remain not filled in, we try to detect this and work
|
---|
| 749 | around it! Andr駸 Garc僘 made us aware of this... */
|
---|
| 750 | if(strcmp("TRUE", ptr) && strcmp("FALSE", ptr)) {
|
---|
| 751 | /* only if the path doesn't look like a boolean option! */
|
---|
| 752 | co->path = strdup(ptr);
|
---|
| 753 | if(!co->path)
|
---|
| 754 | badcookie = TRUE;
|
---|
| 755 | else {
|
---|
| 756 | co->spath = sanitize_cookie_path(co->path);
|
---|
| 757 | if(!co->spath) {
|
---|
| 758 | badcookie = TRUE; /* out of memory bad */
|
---|
| 759 | }
|
---|
| 760 | }
|
---|
| 761 | break;
|
---|
| 762 | }
|
---|
| 763 | /* this doesn't look like a path, make one up! */
|
---|
| 764 | co->path = strdup("/");
|
---|
| 765 | if(!co->path)
|
---|
| 766 | badcookie = TRUE;
|
---|
| 767 | co->spath = strdup("/");
|
---|
| 768 | if(!co->spath)
|
---|
| 769 | badcookie = TRUE;
|
---|
| 770 | fields++; /* add a field and fall down to secure */
|
---|
| 771 | /* FALLTHROUGH */
|
---|
| 772 | case 3:
|
---|
| 773 | co->secure = strcasecompare(ptr, "TRUE")?TRUE:FALSE;
|
---|
| 774 | break;
|
---|
| 775 | case 4:
|
---|
| 776 | if(curlx_strtoofft(ptr, NULL, 10, &co->expires))
|
---|
| 777 | badcookie = TRUE;
|
---|
| 778 | break;
|
---|
| 779 | case 5:
|
---|
| 780 | co->name = strdup(ptr);
|
---|
| 781 | if(!co->name)
|
---|
| 782 | badcookie = TRUE;
|
---|
| 783 | break;
|
---|
| 784 | case 6:
|
---|
| 785 | co->value = strdup(ptr);
|
---|
| 786 | if(!co->value)
|
---|
| 787 | badcookie = TRUE;
|
---|
| 788 | break;
|
---|
| 789 | }
|
---|
| 790 | }
|
---|
| 791 | if(6 == fields) {
|
---|
| 792 | /* we got a cookie with blank contents, fix it */
|
---|
| 793 | co->value = strdup("");
|
---|
| 794 | if(!co->value)
|
---|
| 795 | badcookie = TRUE;
|
---|
| 796 | else
|
---|
| 797 | fields++;
|
---|
| 798 | }
|
---|
| 799 |
|
---|
| 800 | if(!badcookie && (7 != fields))
|
---|
| 801 | /* we did not find the sufficient number of fields */
|
---|
| 802 | badcookie = TRUE;
|
---|
| 803 |
|
---|
| 804 | if(badcookie) {
|
---|
| 805 | freecookie(co);
|
---|
| 806 | return NULL;
|
---|
| 807 | }
|
---|
| 808 |
|
---|
| 809 | }
|
---|
| 810 |
|
---|
| 811 | if(!c->running && /* read from a file */
|
---|
| 812 | c->newsession && /* clean session cookies */
|
---|
| 813 | !co->expires) { /* this is a session cookie since it doesn't expire! */
|
---|
| 814 | freecookie(co);
|
---|
| 815 | return NULL;
|
---|
| 816 | }
|
---|
| 817 |
|
---|
| 818 | co->livecookie = c->running;
|
---|
| 819 |
|
---|
| 820 | /* now, we have parsed the incoming line, we must now check if this
|
---|
| 821 | superceeds an already existing cookie, which it may if the previous have
|
---|
| 822 | the same domain and path as this */
|
---|
| 823 |
|
---|
| 824 | /* at first, remove expired cookies */
|
---|
| 825 | remove_expired(c);
|
---|
| 826 |
|
---|
| 827 | #ifdef USE_LIBPSL
|
---|
| 828 | /* Check if the domain is a Public Suffix and if yes, ignore the cookie.
|
---|
| 829 | This needs a libpsl compiled with builtin data. */
|
---|
| 830 | if(domain && co->domain && !isip(co->domain)) {
|
---|
| 831 | psl = psl_builtin();
|
---|
| 832 | if(psl && !psl_is_cookie_domain_acceptable(psl, domain, co->domain)) {
|
---|
| 833 | infof(data,
|
---|
| 834 | "cookie '%s' dropped, domain '%s' must not set cookies for '%s'\n",
|
---|
| 835 | co->name, domain, co->domain);
|
---|
| 836 | freecookie(co);
|
---|
| 837 | return NULL;
|
---|
| 838 | }
|
---|
| 839 | }
|
---|
| 840 | #endif
|
---|
| 841 |
|
---|
| 842 | clist = c->cookies;
|
---|
| 843 | replace_old = FALSE;
|
---|
| 844 | while(clist) {
|
---|
| 845 | if(strcasecompare(clist->name, co->name)) {
|
---|
| 846 | /* the names are identical */
|
---|
| 847 |
|
---|
| 848 | if(clist->domain && co->domain) {
|
---|
| 849 | if(strcasecompare(clist->domain, co->domain) &&
|
---|
| 850 | (clist->tailmatch == co->tailmatch))
|
---|
| 851 | /* The domains are identical */
|
---|
| 852 | replace_old = TRUE;
|
---|
| 853 | }
|
---|
| 854 | else if(!clist->domain && !co->domain)
|
---|
| 855 | replace_old = TRUE;
|
---|
| 856 |
|
---|
| 857 | if(replace_old) {
|
---|
| 858 | /* the domains were identical */
|
---|
| 859 |
|
---|
| 860 | if(clist->spath && co->spath) {
|
---|
| 861 | if(strcasecompare(clist->spath, co->spath)) {
|
---|
| 862 | replace_old = TRUE;
|
---|
| 863 | }
|
---|
| 864 | else
|
---|
| 865 | replace_old = FALSE;
|
---|
| 866 | }
|
---|
| 867 | else if(!clist->spath && !co->spath)
|
---|
| 868 | replace_old = TRUE;
|
---|
| 869 | else
|
---|
| 870 | replace_old = FALSE;
|
---|
| 871 |
|
---|
| 872 | }
|
---|
| 873 |
|
---|
| 874 | if(replace_old && !co->livecookie && clist->livecookie) {
|
---|
| 875 | /* Both cookies matched fine, except that the already present
|
---|
| 876 | cookie is "live", which means it was set from a header, while
|
---|
| 877 | the new one isn't "live" and thus only read from a file. We let
|
---|
| 878 | live cookies stay alive */
|
---|
| 879 |
|
---|
| 880 | /* Free the newcomer and get out of here! */
|
---|
| 881 | freecookie(co);
|
---|
| 882 | return NULL;
|
---|
| 883 | }
|
---|
| 884 |
|
---|
| 885 | if(replace_old) {
|
---|
| 886 | co->next = clist->next; /* get the next-pointer first */
|
---|
| 887 |
|
---|
| 888 | /* then free all the old pointers */
|
---|
| 889 | free(clist->name);
|
---|
| 890 | free(clist->value);
|
---|
| 891 | free(clist->domain);
|
---|
| 892 | free(clist->path);
|
---|
| 893 | free(clist->spath);
|
---|
| 894 | free(clist->expirestr);
|
---|
| 895 | free(clist->version);
|
---|
| 896 | free(clist->maxage);
|
---|
| 897 |
|
---|
| 898 | *clist = *co; /* then store all the new data */
|
---|
| 899 |
|
---|
| 900 | free(co); /* free the newly alloced memory */
|
---|
| 901 | co = clist; /* point to the previous struct instead */
|
---|
| 902 |
|
---|
| 903 | /* We have replaced a cookie, now skip the rest of the list but
|
---|
| 904 | make sure the 'lastc' pointer is properly set */
|
---|
| 905 | do {
|
---|
| 906 | lastc = clist;
|
---|
| 907 | clist = clist->next;
|
---|
| 908 | } while(clist);
|
---|
| 909 | break;
|
---|
| 910 | }
|
---|
| 911 | }
|
---|
| 912 | lastc = clist;
|
---|
| 913 | clist = clist->next;
|
---|
| 914 | }
|
---|
| 915 |
|
---|
| 916 | if(c->running)
|
---|
| 917 | /* Only show this when NOT reading the cookies from a file */
|
---|
| 918 | infof(data, "%s cookie %s=\"%s\" for domain %s, path %s, "
|
---|
| 919 | "expire %" CURL_FORMAT_CURL_OFF_T "\n",
|
---|
| 920 | replace_old?"Replaced":"Added", co->name, co->value,
|
---|
| 921 | co->domain, co->path, co->expires);
|
---|
| 922 |
|
---|
| 923 | if(!replace_old) {
|
---|
| 924 | /* then make the last item point on this new one */
|
---|
| 925 | if(lastc)
|
---|
| 926 | lastc->next = co;
|
---|
| 927 | else
|
---|
| 928 | c->cookies = co;
|
---|
| 929 | c->numcookies++; /* one more cookie in the jar */
|
---|
| 930 | }
|
---|
| 931 |
|
---|
| 932 | return co;
|
---|
| 933 | }
|
---|
| 934 |
|
---|
| 935 | /*
|
---|
| 936 | * get_line() makes sure to only return complete whole lines that fit in 'len'
|
---|
| 937 | * bytes and end with a newline.
|
---|
| 938 | */
|
---|
| 939 | static char *get_line(char *buf, int len, FILE *input)
|
---|
| 940 | {
|
---|
| 941 | bool partial = FALSE;
|
---|
| 942 | while(1) {
|
---|
| 943 | char *b = fgets(buf, len, input);
|
---|
| 944 | if(b) {
|
---|
| 945 | size_t rlen = strlen(b);
|
---|
| 946 | if(rlen && (b[rlen-1] == '\n')) {
|
---|
| 947 | if(partial) {
|
---|
| 948 | partial = FALSE;
|
---|
| 949 | continue;
|
---|
| 950 | }
|
---|
| 951 | return b;
|
---|
| 952 | }
|
---|
| 953 | /* read a partial, discard the next piece that ends with newline */
|
---|
| 954 | partial = TRUE;
|
---|
| 955 | }
|
---|
| 956 | else
|
---|
| 957 | break;
|
---|
| 958 | }
|
---|
| 959 | return NULL;
|
---|
| 960 | }
|
---|
| 961 |
|
---|
| 962 |
|
---|
| 963 | /*****************************************************************************
|
---|
| 964 | *
|
---|
| 965 | * Curl_cookie_init()
|
---|
| 966 | *
|
---|
| 967 | * Inits a cookie struct to read data from a local file. This is always
|
---|
| 968 | * called before any cookies are set. File may be NULL.
|
---|
| 969 | *
|
---|
| 970 | * If 'newsession' is TRUE, discard all "session cookies" on read from file.
|
---|
| 971 | *
|
---|
| 972 | * Returns NULL on out of memory. Invalid cookies are ignored.
|
---|
| 973 | ****************************************************************************/
|
---|
| 974 | struct CookieInfo *Curl_cookie_init(struct Curl_easy *data,
|
---|
| 975 | const char *file,
|
---|
| 976 | struct CookieInfo *inc,
|
---|
| 977 | bool newsession)
|
---|
| 978 | {
|
---|
| 979 | struct CookieInfo *c;
|
---|
| 980 | FILE *fp = NULL;
|
---|
| 981 | bool fromfile = TRUE;
|
---|
| 982 | char *line = NULL;
|
---|
| 983 |
|
---|
| 984 | if(NULL == inc) {
|
---|
| 985 | /* we didn't get a struct, create one */
|
---|
| 986 | c = calloc(1, sizeof(struct CookieInfo));
|
---|
| 987 | if(!c)
|
---|
| 988 | return NULL; /* failed to get memory */
|
---|
| 989 | c->filename = strdup(file?file:"none"); /* copy the name just in case */
|
---|
| 990 | if(!c->filename)
|
---|
| 991 | goto fail; /* failed to get memory */
|
---|
| 992 | }
|
---|
| 993 | else {
|
---|
| 994 | /* we got an already existing one, use that */
|
---|
| 995 | c = inc;
|
---|
| 996 | }
|
---|
| 997 | c->running = FALSE; /* this is not running, this is init */
|
---|
| 998 |
|
---|
| 999 | if(file && !strcmp(file, "-")) {
|
---|
| 1000 | fp = stdin;
|
---|
| 1001 | fromfile = FALSE;
|
---|
| 1002 | }
|
---|
| 1003 | else if(file && !*file) {
|
---|
| 1004 | /* points to a "" string */
|
---|
| 1005 | fp = NULL;
|
---|
| 1006 | }
|
---|
| 1007 | else
|
---|
| 1008 | fp = file?fopen(file, FOPEN_READTEXT):NULL;
|
---|
| 1009 |
|
---|
| 1010 | c->newsession = newsession; /* new session? */
|
---|
| 1011 |
|
---|
| 1012 | if(fp) {
|
---|
| 1013 | char *lineptr;
|
---|
| 1014 | bool headerline;
|
---|
| 1015 |
|
---|
| 1016 | line = malloc(MAX_COOKIE_LINE);
|
---|
| 1017 | if(!line)
|
---|
| 1018 | goto fail;
|
---|
| 1019 | while(get_line(line, MAX_COOKIE_LINE, fp)) {
|
---|
| 1020 | if(checkprefix("Set-Cookie:", line)) {
|
---|
| 1021 | /* This is a cookie line, get it! */
|
---|
| 1022 | lineptr = &line[11];
|
---|
| 1023 | headerline = TRUE;
|
---|
| 1024 | }
|
---|
| 1025 | else {
|
---|
| 1026 | lineptr = line;
|
---|
| 1027 | headerline = FALSE;
|
---|
| 1028 | }
|
---|
| 1029 | while(*lineptr && ISBLANK(*lineptr))
|
---|
| 1030 | lineptr++;
|
---|
| 1031 |
|
---|
| 1032 | Curl_cookie_add(data, c, headerline, lineptr, NULL, NULL);
|
---|
| 1033 | }
|
---|
| 1034 | free(line); /* free the line buffer */
|
---|
| 1035 |
|
---|
| 1036 | if(fromfile)
|
---|
| 1037 | fclose(fp);
|
---|
| 1038 | }
|
---|
| 1039 |
|
---|
| 1040 | c->running = TRUE; /* now, we're running */
|
---|
| 1041 |
|
---|
| 1042 | return c;
|
---|
| 1043 |
|
---|
| 1044 | fail:
|
---|
| 1045 | free(line);
|
---|
| 1046 | if(!inc)
|
---|
| 1047 | /* Only clean up if we allocated it here, as the original could still be in
|
---|
| 1048 | * use by a share handle */
|
---|
| 1049 | Curl_cookie_cleanup(c);
|
---|
| 1050 | if(fromfile && fp)
|
---|
| 1051 | fclose(fp);
|
---|
| 1052 | return NULL; /* out of memory */
|
---|
| 1053 | }
|
---|
| 1054 |
|
---|
| 1055 | /* sort this so that the longest path gets before the shorter path */
|
---|
| 1056 | static int cookie_sort(const void *p1, const void *p2)
|
---|
| 1057 | {
|
---|
| 1058 | struct Cookie *c1 = *(struct Cookie **)p1;
|
---|
| 1059 | struct Cookie *c2 = *(struct Cookie **)p2;
|
---|
| 1060 | size_t l1, l2;
|
---|
| 1061 |
|
---|
| 1062 | /* 1 - compare cookie path lengths */
|
---|
| 1063 | l1 = c1->path ? strlen(c1->path) : 0;
|
---|
| 1064 | l2 = c2->path ? strlen(c2->path) : 0;
|
---|
| 1065 |
|
---|
| 1066 | if(l1 != l2)
|
---|
| 1067 | return (l2 > l1) ? 1 : -1 ; /* avoid size_t <=> int conversions */
|
---|
| 1068 |
|
---|
| 1069 | /* 2 - compare cookie domain lengths */
|
---|
| 1070 | l1 = c1->domain ? strlen(c1->domain) : 0;
|
---|
| 1071 | l2 = c2->domain ? strlen(c2->domain) : 0;
|
---|
| 1072 |
|
---|
| 1073 | if(l1 != l2)
|
---|
| 1074 | return (l2 > l1) ? 1 : -1 ; /* avoid size_t <=> int conversions */
|
---|
| 1075 |
|
---|
| 1076 | /* 3 - compare cookie names */
|
---|
| 1077 | if(c1->name && c2->name)
|
---|
| 1078 | return strcmp(c1->name, c2->name);
|
---|
| 1079 |
|
---|
| 1080 | /* sorry, can't be more deterministic */
|
---|
| 1081 | return 0;
|
---|
| 1082 | }
|
---|
| 1083 |
|
---|
| 1084 | #define CLONE(field) \
|
---|
| 1085 | do { \
|
---|
| 1086 | if(src->field) { \
|
---|
| 1087 | d->field = strdup(src->field); \
|
---|
| 1088 | if(!d->field) \
|
---|
| 1089 | goto fail; \
|
---|
| 1090 | } \
|
---|
| 1091 | } while(0)
|
---|
| 1092 |
|
---|
| 1093 | static struct Cookie *dup_cookie(struct Cookie *src)
|
---|
| 1094 | {
|
---|
| 1095 | struct Cookie *d = calloc(sizeof(struct Cookie), 1);
|
---|
| 1096 | if(d) {
|
---|
| 1097 | CLONE(expirestr);
|
---|
| 1098 | CLONE(domain);
|
---|
| 1099 | CLONE(path);
|
---|
| 1100 | CLONE(spath);
|
---|
| 1101 | CLONE(name);
|
---|
| 1102 | CLONE(value);
|
---|
| 1103 | CLONE(maxage);
|
---|
| 1104 | CLONE(version);
|
---|
| 1105 | d->expires = src->expires;
|
---|
| 1106 | d->tailmatch = src->tailmatch;
|
---|
| 1107 | d->secure = src->secure;
|
---|
| 1108 | d->livecookie = src->livecookie;
|
---|
| 1109 | d->httponly = src->httponly;
|
---|
| 1110 | }
|
---|
| 1111 | return d;
|
---|
| 1112 |
|
---|
| 1113 | fail:
|
---|
| 1114 | freecookie(d);
|
---|
| 1115 | return NULL;
|
---|
| 1116 | }
|
---|
| 1117 |
|
---|
| 1118 | /*****************************************************************************
|
---|
| 1119 | *
|
---|
| 1120 | * Curl_cookie_getlist()
|
---|
| 1121 | *
|
---|
| 1122 | * For a given host and path, return a linked list of cookies that the
|
---|
| 1123 | * client should send to the server if used now. The secure boolean informs
|
---|
| 1124 | * the cookie if a secure connection is achieved or not.
|
---|
| 1125 | *
|
---|
| 1126 | * It shall only return cookies that haven't expired.
|
---|
| 1127 | *
|
---|
| 1128 | ****************************************************************************/
|
---|
| 1129 |
|
---|
| 1130 | struct Cookie *Curl_cookie_getlist(struct CookieInfo *c,
|
---|
| 1131 | const char *host, const char *path,
|
---|
| 1132 | bool secure)
|
---|
| 1133 | {
|
---|
| 1134 | struct Cookie *newco;
|
---|
| 1135 | struct Cookie *co;
|
---|
| 1136 | time_t now = time(NULL);
|
---|
| 1137 | struct Cookie *mainco = NULL;
|
---|
| 1138 | size_t matches = 0;
|
---|
| 1139 | bool is_ip;
|
---|
| 1140 |
|
---|
| 1141 | if(!c || !c->cookies)
|
---|
| 1142 | return NULL; /* no cookie struct or no cookies in the struct */
|
---|
| 1143 |
|
---|
| 1144 | /* at first, remove expired cookies */
|
---|
| 1145 | remove_expired(c);
|
---|
| 1146 |
|
---|
| 1147 | /* check if host is an IP(v4|v6) address */
|
---|
| 1148 | is_ip = isip(host);
|
---|
| 1149 |
|
---|
| 1150 | co = c->cookies;
|
---|
| 1151 |
|
---|
| 1152 | while(co) {
|
---|
| 1153 | /* only process this cookie if it is not expired or had no expire
|
---|
| 1154 | date AND that if the cookie requires we're secure we must only
|
---|
| 1155 | continue if we are! */
|
---|
| 1156 | if((!co->expires || (co->expires > now)) &&
|
---|
| 1157 | (co->secure?secure:TRUE)) {
|
---|
| 1158 |
|
---|
| 1159 | /* now check if the domain is correct */
|
---|
| 1160 | if(!co->domain ||
|
---|
| 1161 | (co->tailmatch && !is_ip && tailmatch(co->domain, host)) ||
|
---|
| 1162 | ((!co->tailmatch || is_ip) && strcasecompare(host, co->domain)) ) {
|
---|
| 1163 | /* the right part of the host matches the domain stuff in the
|
---|
| 1164 | cookie data */
|
---|
| 1165 |
|
---|
| 1166 | /* now check the left part of the path with the cookies path
|
---|
| 1167 | requirement */
|
---|
| 1168 | if(!co->spath || pathmatch(co->spath, path) ) {
|
---|
| 1169 |
|
---|
| 1170 | /* and now, we know this is a match and we should create an
|
---|
| 1171 | entry for the return-linked-list */
|
---|
| 1172 |
|
---|
| 1173 | newco = dup_cookie(co);
|
---|
| 1174 | if(newco) {
|
---|
| 1175 | /* then modify our next */
|
---|
| 1176 | newco->next = mainco;
|
---|
| 1177 |
|
---|
| 1178 | /* point the main to us */
|
---|
| 1179 | mainco = newco;
|
---|
| 1180 |
|
---|
| 1181 | matches++;
|
---|
| 1182 | }
|
---|
| 1183 | else {
|
---|
| 1184 | fail:
|
---|
| 1185 | /* failure, clear up the allocated chain and return NULL */
|
---|
| 1186 | Curl_cookie_freelist(mainco);
|
---|
| 1187 | return NULL;
|
---|
| 1188 | }
|
---|
| 1189 | }
|
---|
| 1190 | }
|
---|
| 1191 | }
|
---|
| 1192 | co = co->next;
|
---|
| 1193 | }
|
---|
| 1194 |
|
---|
| 1195 | if(matches) {
|
---|
| 1196 | /* Now we need to make sure that if there is a name appearing more than
|
---|
| 1197 | once, the longest specified path version comes first. To make this
|
---|
| 1198 | the swiftest way, we just sort them all based on path length. */
|
---|
| 1199 | struct Cookie **array;
|
---|
| 1200 | size_t i;
|
---|
| 1201 |
|
---|
| 1202 | /* alloc an array and store all cookie pointers */
|
---|
| 1203 | array = malloc(sizeof(struct Cookie *) * matches);
|
---|
| 1204 | if(!array)
|
---|
| 1205 | goto fail;
|
---|
| 1206 |
|
---|
| 1207 | co = mainco;
|
---|
| 1208 |
|
---|
| 1209 | for(i = 0; co; co = co->next)
|
---|
| 1210 | array[i++] = co;
|
---|
| 1211 |
|
---|
| 1212 | /* now sort the cookie pointers in path length order */
|
---|
| 1213 | qsort(array, matches, sizeof(struct Cookie *), cookie_sort);
|
---|
| 1214 |
|
---|
| 1215 | /* remake the linked list order according to the new order */
|
---|
| 1216 |
|
---|
| 1217 | mainco = array[0]; /* start here */
|
---|
| 1218 | for(i = 0; i<matches-1; i++)
|
---|
| 1219 | array[i]->next = array[i + 1];
|
---|
| 1220 | array[matches-1]->next = NULL; /* terminate the list */
|
---|
| 1221 |
|
---|
| 1222 | free(array); /* remove the temporary data again */
|
---|
| 1223 | }
|
---|
| 1224 |
|
---|
| 1225 | return mainco; /* return the new list */
|
---|
| 1226 | }
|
---|
| 1227 |
|
---|
| 1228 | /*****************************************************************************
|
---|
| 1229 | *
|
---|
| 1230 | * Curl_cookie_clearall()
|
---|
| 1231 | *
|
---|
| 1232 | * Clear all existing cookies and reset the counter.
|
---|
| 1233 | *
|
---|
| 1234 | ****************************************************************************/
|
---|
| 1235 | void Curl_cookie_clearall(struct CookieInfo *cookies)
|
---|
| 1236 | {
|
---|
| 1237 | if(cookies) {
|
---|
| 1238 | Curl_cookie_freelist(cookies->cookies);
|
---|
| 1239 | cookies->cookies = NULL;
|
---|
| 1240 | cookies->numcookies = 0;
|
---|
| 1241 | }
|
---|
| 1242 | }
|
---|
| 1243 |
|
---|
| 1244 | /*****************************************************************************
|
---|
| 1245 | *
|
---|
| 1246 | * Curl_cookie_freelist()
|
---|
| 1247 | *
|
---|
| 1248 | * Free a list of cookies previously returned by Curl_cookie_getlist();
|
---|
| 1249 | *
|
---|
| 1250 | ****************************************************************************/
|
---|
| 1251 |
|
---|
| 1252 | void Curl_cookie_freelist(struct Cookie *co)
|
---|
| 1253 | {
|
---|
| 1254 | struct Cookie *next;
|
---|
| 1255 | while(co) {
|
---|
| 1256 | next = co->next;
|
---|
| 1257 | freecookie(co);
|
---|
| 1258 | co = next;
|
---|
| 1259 | }
|
---|
| 1260 | }
|
---|
| 1261 |
|
---|
| 1262 |
|
---|
| 1263 | /*****************************************************************************
|
---|
| 1264 | *
|
---|
| 1265 | * Curl_cookie_clearsess()
|
---|
| 1266 | *
|
---|
| 1267 | * Free all session cookies in the cookies list.
|
---|
| 1268 | *
|
---|
| 1269 | ****************************************************************************/
|
---|
| 1270 | void Curl_cookie_clearsess(struct CookieInfo *cookies)
|
---|
| 1271 | {
|
---|
| 1272 | struct Cookie *first, *curr, *next, *prev = NULL;
|
---|
| 1273 |
|
---|
| 1274 | if(!cookies || !cookies->cookies)
|
---|
| 1275 | return;
|
---|
| 1276 |
|
---|
| 1277 | first = curr = prev = cookies->cookies;
|
---|
| 1278 |
|
---|
| 1279 | for(; curr; curr = next) {
|
---|
| 1280 | next = curr->next;
|
---|
| 1281 | if(!curr->expires) {
|
---|
| 1282 | if(first == curr)
|
---|
| 1283 | first = next;
|
---|
| 1284 |
|
---|
| 1285 | if(prev == curr)
|
---|
| 1286 | prev = next;
|
---|
| 1287 | else
|
---|
| 1288 | prev->next = next;
|
---|
| 1289 |
|
---|
| 1290 | freecookie(curr);
|
---|
| 1291 | cookies->numcookies--;
|
---|
| 1292 | }
|
---|
| 1293 | else
|
---|
| 1294 | prev = curr;
|
---|
| 1295 | }
|
---|
| 1296 |
|
---|
| 1297 | cookies->cookies = first;
|
---|
| 1298 | }
|
---|
| 1299 |
|
---|
| 1300 |
|
---|
| 1301 | /*****************************************************************************
|
---|
| 1302 | *
|
---|
| 1303 | * Curl_cookie_cleanup()
|
---|
| 1304 | *
|
---|
| 1305 | * Free a "cookie object" previous created with Curl_cookie_init().
|
---|
| 1306 | *
|
---|
| 1307 | ****************************************************************************/
|
---|
| 1308 | void Curl_cookie_cleanup(struct CookieInfo *c)
|
---|
| 1309 | {
|
---|
| 1310 | if(c) {
|
---|
| 1311 | free(c->filename);
|
---|
| 1312 | Curl_cookie_freelist(c->cookies);
|
---|
| 1313 | free(c); /* free the base struct as well */
|
---|
| 1314 | }
|
---|
| 1315 | }
|
---|
| 1316 |
|
---|
| 1317 | /* get_netscape_format()
|
---|
| 1318 | *
|
---|
| 1319 | * Formats a string for Netscape output file, w/o a newline at the end.
|
---|
| 1320 | *
|
---|
| 1321 | * Function returns a char * to a formatted line. Has to be free()d
|
---|
| 1322 | */
|
---|
| 1323 | static char *get_netscape_format(const struct Cookie *co)
|
---|
| 1324 | {
|
---|
| 1325 | return aprintf(
|
---|
| 1326 | "%s" /* httponly preamble */
|
---|
| 1327 | "%s%s\t" /* domain */
|
---|
| 1328 | "%s\t" /* tailmatch */
|
---|
| 1329 | "%s\t" /* path */
|
---|
| 1330 | "%s\t" /* secure */
|
---|
| 1331 | "%" CURL_FORMAT_CURL_OFF_T "\t" /* expires */
|
---|
| 1332 | "%s\t" /* name */
|
---|
| 1333 | "%s", /* value */
|
---|
| 1334 | co->httponly?"#HttpOnly_":"",
|
---|
| 1335 | /* Make sure all domains are prefixed with a dot if they allow
|
---|
| 1336 | tailmatching. This is Mozilla-style. */
|
---|
| 1337 | (co->tailmatch && co->domain && co->domain[0] != '.')? ".":"",
|
---|
| 1338 | co->domain?co->domain:"unknown",
|
---|
| 1339 | co->tailmatch?"TRUE":"FALSE",
|
---|
| 1340 | co->path?co->path:"/",
|
---|
| 1341 | co->secure?"TRUE":"FALSE",
|
---|
| 1342 | co->expires,
|
---|
| 1343 | co->name,
|
---|
| 1344 | co->value?co->value:"");
|
---|
| 1345 | }
|
---|
| 1346 |
|
---|
| 1347 | /*
|
---|
| 1348 | * cookie_output()
|
---|
| 1349 | *
|
---|
| 1350 | * Writes all internally known cookies to the specified file. Specify
|
---|
| 1351 | * "-" as file name to write to stdout.
|
---|
| 1352 | *
|
---|
| 1353 | * The function returns non-zero on write failure.
|
---|
| 1354 | */
|
---|
| 1355 | static int cookie_output(struct CookieInfo *c, const char *dumphere)
|
---|
| 1356 | {
|
---|
| 1357 | struct Cookie *co;
|
---|
| 1358 | FILE *out;
|
---|
| 1359 | bool use_stdout = FALSE;
|
---|
| 1360 | char *format_ptr;
|
---|
| 1361 |
|
---|
| 1362 | if((NULL == c) || (0 == c->numcookies))
|
---|
| 1363 | /* If there are no known cookies, we don't write or even create any
|
---|
| 1364 | destination file */
|
---|
| 1365 | return 0;
|
---|
| 1366 |
|
---|
| 1367 | /* at first, remove expired cookies */
|
---|
| 1368 | remove_expired(c);
|
---|
| 1369 |
|
---|
| 1370 | if(!strcmp("-", dumphere)) {
|
---|
| 1371 | /* use stdout */
|
---|
| 1372 | out = stdout;
|
---|
| 1373 | use_stdout = TRUE;
|
---|
| 1374 | }
|
---|
| 1375 | else {
|
---|
| 1376 | out = fopen(dumphere, FOPEN_WRITETEXT);
|
---|
| 1377 | if(!out)
|
---|
| 1378 | return 1; /* failure */
|
---|
| 1379 | }
|
---|
| 1380 |
|
---|
| 1381 | fputs("# Netscape HTTP Cookie File\n"
|
---|
| 1382 | "# https://curl.haxx.se/docs/http-cookies.html\n"
|
---|
| 1383 | "# This file was generated by libcurl! Edit at your own risk.\n\n",
|
---|
| 1384 | out);
|
---|
| 1385 |
|
---|
| 1386 | for(co = c->cookies; co; co = co->next) {
|
---|
| 1387 | if(!co->domain)
|
---|
| 1388 | continue;
|
---|
| 1389 | format_ptr = get_netscape_format(co);
|
---|
| 1390 | if(format_ptr == NULL) {
|
---|
| 1391 | fprintf(out, "#\n# Fatal libcurl error\n");
|
---|
| 1392 | if(!use_stdout)
|
---|
| 1393 | fclose(out);
|
---|
| 1394 | return 1;
|
---|
| 1395 | }
|
---|
| 1396 | fprintf(out, "%s\n", format_ptr);
|
---|
| 1397 | free(format_ptr);
|
---|
| 1398 | }
|
---|
| 1399 |
|
---|
| 1400 | if(!use_stdout)
|
---|
| 1401 | fclose(out);
|
---|
| 1402 |
|
---|
| 1403 | return 0;
|
---|
| 1404 | }
|
---|
| 1405 |
|
---|
| 1406 | static struct curl_slist *cookie_list(struct Curl_easy *data)
|
---|
| 1407 | {
|
---|
| 1408 | struct curl_slist *list = NULL;
|
---|
| 1409 | struct curl_slist *beg;
|
---|
| 1410 | struct Cookie *c;
|
---|
| 1411 | char *line;
|
---|
| 1412 |
|
---|
| 1413 | if((data->cookies == NULL) ||
|
---|
| 1414 | (data->cookies->numcookies == 0))
|
---|
| 1415 | return NULL;
|
---|
| 1416 |
|
---|
| 1417 | for(c = data->cookies->cookies; c; c = c->next) {
|
---|
| 1418 | if(!c->domain)
|
---|
| 1419 | continue;
|
---|
| 1420 | line = get_netscape_format(c);
|
---|
| 1421 | if(!line) {
|
---|
| 1422 | curl_slist_free_all(list);
|
---|
| 1423 | return NULL;
|
---|
| 1424 | }
|
---|
| 1425 | beg = Curl_slist_append_nodup(list, line);
|
---|
| 1426 | if(!beg) {
|
---|
| 1427 | free(line);
|
---|
| 1428 | curl_slist_free_all(list);
|
---|
| 1429 | return NULL;
|
---|
| 1430 | }
|
---|
| 1431 | list = beg;
|
---|
| 1432 | }
|
---|
| 1433 |
|
---|
| 1434 | return list;
|
---|
| 1435 | }
|
---|
| 1436 |
|
---|
| 1437 | struct curl_slist *Curl_cookie_list(struct Curl_easy *data)
|
---|
| 1438 | {
|
---|
| 1439 | struct curl_slist *list;
|
---|
| 1440 | Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
|
---|
| 1441 | list = cookie_list(data);
|
---|
| 1442 | Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
|
---|
| 1443 | return list;
|
---|
| 1444 | }
|
---|
| 1445 |
|
---|
| 1446 | void Curl_flush_cookies(struct Curl_easy *data, int cleanup)
|
---|
| 1447 | {
|
---|
| 1448 | if(data->set.str[STRING_COOKIEJAR]) {
|
---|
| 1449 | if(data->change.cookielist) {
|
---|
| 1450 | /* If there is a list of cookie files to read, do it first so that
|
---|
| 1451 | we have all the told files read before we write the new jar.
|
---|
| 1452 | Curl_cookie_loadfiles() LOCKS and UNLOCKS the share itself! */
|
---|
| 1453 | Curl_cookie_loadfiles(data);
|
---|
| 1454 | }
|
---|
| 1455 |
|
---|
| 1456 | Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
|
---|
| 1457 |
|
---|
| 1458 | /* if we have a destination file for all the cookies to get dumped to */
|
---|
| 1459 | if(cookie_output(data->cookies, data->set.str[STRING_COOKIEJAR]))
|
---|
| 1460 | infof(data, "WARNING: failed to save cookies in %s\n",
|
---|
| 1461 | data->set.str[STRING_COOKIEJAR]);
|
---|
| 1462 | }
|
---|
| 1463 | else {
|
---|
| 1464 | if(cleanup && data->change.cookielist) {
|
---|
| 1465 | /* since nothing is written, we can just free the list of cookie file
|
---|
| 1466 | names */
|
---|
| 1467 | curl_slist_free_all(data->change.cookielist); /* clean up list */
|
---|
| 1468 | data->change.cookielist = NULL;
|
---|
| 1469 | }
|
---|
| 1470 | Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
|
---|
| 1471 | }
|
---|
| 1472 |
|
---|
| 1473 | if(cleanup && (!data->share || (data->cookies != data->share->cookies))) {
|
---|
| 1474 | Curl_cookie_cleanup(data->cookies);
|
---|
| 1475 | }
|
---|
| 1476 | Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
|
---|
| 1477 | }
|
---|
| 1478 |
|
---|
| 1479 | #endif /* CURL_DISABLE_HTTP || CURL_DISABLE_COOKIES */
|
---|