[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 | #include "curl_setup.h"
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| 24 |
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| 25 | #include <curl/curl.h>
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| 26 |
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| 27 | #ifndef CURL_DISABLE_HTTP
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| 28 |
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| 29 | #if defined(HAVE_LIBGEN_H) && defined(HAVE_BASENAME)
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| 30 | #include <libgen.h>
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| 31 | #endif
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| 32 |
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| 33 | #include "urldata.h" /* for struct Curl_easy */
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| 34 | #include "formdata.h"
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| 35 | #include "mime.h"
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| 36 | #include "non-ascii.h"
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| 37 | #include "vtls/vtls.h"
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| 38 | #include "strcase.h"
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| 39 | #include "sendf.h"
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| 40 | #include "strdup.h"
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| 41 | #include "rand.h"
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| 42 | /* The last 3 #include files should be in this order */
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| 43 | #include "curl_printf.h"
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| 44 | #include "curl_memory.h"
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| 45 | #include "memdebug.h"
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| 46 |
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| 47 |
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| 48 | /* What kind of Content-Type to use on un-specified files with unrecognized
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| 49 | extensions. */
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| 50 | #define HTTPPOST_CONTENTTYPE_DEFAULT "application/octet-stream"
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| 51 |
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| 52 | #define HTTPPOST_PTRNAME CURL_HTTPPOST_PTRNAME
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| 53 | #define HTTPPOST_FILENAME CURL_HTTPPOST_FILENAME
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| 54 | #define HTTPPOST_PTRCONTENTS CURL_HTTPPOST_PTRCONTENTS
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| 55 | #define HTTPPOST_READFILE CURL_HTTPPOST_READFILE
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| 56 | #define HTTPPOST_PTRBUFFER CURL_HTTPPOST_PTRBUFFER
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| 57 | #define HTTPPOST_CALLBACK CURL_HTTPPOST_CALLBACK
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| 58 | #define HTTPPOST_BUFFER CURL_HTTPPOST_BUFFER
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| 59 |
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| 60 | /***************************************************************************
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| 61 | *
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| 62 | * AddHttpPost()
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| 63 | *
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| 64 | * Adds a HttpPost structure to the list, if parent_post is given becomes
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| 65 | * a subpost of parent_post instead of a direct list element.
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| 66 | *
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| 67 | * Returns newly allocated HttpPost on success and NULL if malloc failed.
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| 68 | *
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| 69 | ***************************************************************************/
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| 70 | static struct curl_httppost *
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| 71 | AddHttpPost(char *name, size_t namelength,
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| 72 | char *value, curl_off_t contentslength,
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| 73 | char *buffer, size_t bufferlength,
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| 74 | char *contenttype,
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| 75 | long flags,
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| 76 | struct curl_slist *contentHeader,
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| 77 | char *showfilename, char *userp,
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| 78 | struct curl_httppost *parent_post,
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| 79 | struct curl_httppost **httppost,
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| 80 | struct curl_httppost **last_post)
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| 81 | {
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| 82 | struct curl_httppost *post;
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| 83 | post = calloc(1, sizeof(struct curl_httppost));
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| 84 | if(post) {
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| 85 | post->name = name;
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| 86 | post->namelength = (long)(name?(namelength?namelength:strlen(name)):0);
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| 87 | post->contents = value;
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| 88 | post->contentlen = contentslength;
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| 89 | post->buffer = buffer;
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| 90 | post->bufferlength = (long)bufferlength;
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| 91 | post->contenttype = contenttype;
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| 92 | post->contentheader = contentHeader;
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| 93 | post->showfilename = showfilename;
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| 94 | post->userp = userp;
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| 95 | post->flags = flags | CURL_HTTPPOST_LARGE;
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| 96 | }
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| 97 | else
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| 98 | return NULL;
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| 99 |
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| 100 | if(parent_post) {
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| 101 | /* now, point our 'more' to the original 'more' */
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| 102 | post->more = parent_post->more;
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| 103 |
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| 104 | /* then move the original 'more' to point to ourselves */
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| 105 | parent_post->more = post;
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| 106 | }
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| 107 | else {
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| 108 | /* make the previous point to this */
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| 109 | if(*last_post)
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| 110 | (*last_post)->next = post;
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| 111 | else
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| 112 | (*httppost) = post;
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| 113 |
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| 114 | (*last_post) = post;
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| 115 | }
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| 116 | return post;
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| 117 | }
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| 118 |
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| 119 | /***************************************************************************
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| 120 | *
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| 121 | * AddFormInfo()
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| 122 | *
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| 123 | * Adds a FormInfo structure to the list presented by parent_form_info.
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| 124 | *
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| 125 | * Returns newly allocated FormInfo on success and NULL if malloc failed/
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| 126 | * parent_form_info is NULL.
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| 127 | *
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| 128 | ***************************************************************************/
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| 129 | static FormInfo * AddFormInfo(char *value,
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| 130 | char *contenttype,
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| 131 | FormInfo *parent_form_info)
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| 132 | {
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| 133 | FormInfo *form_info;
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| 134 | form_info = calloc(1, sizeof(struct FormInfo));
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| 135 | if(form_info) {
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| 136 | if(value)
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| 137 | form_info->value = value;
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| 138 | if(contenttype)
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| 139 | form_info->contenttype = contenttype;
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| 140 | form_info->flags = HTTPPOST_FILENAME;
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| 141 | }
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| 142 | else
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| 143 | return NULL;
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| 144 |
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| 145 | if(parent_form_info) {
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| 146 | /* now, point our 'more' to the original 'more' */
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| 147 | form_info->more = parent_form_info->more;
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| 148 |
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| 149 | /* then move the original 'more' to point to ourselves */
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| 150 | parent_form_info->more = form_info;
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| 151 | }
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| 152 |
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| 153 | return form_info;
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| 154 | }
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| 155 |
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| 156 | /***************************************************************************
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| 157 | *
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| 158 | * ContentTypeForFilename()
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| 159 | *
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| 160 | * Provides content type for filename if one of the known types (else
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| 161 | * (either the prevtype or the default is returned).
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| 162 | *
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| 163 | * Returns some valid contenttype for filename.
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| 164 | *
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| 165 | ***************************************************************************/
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| 166 | static const char *ContentTypeForFilename(const char *filename,
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| 167 | const char *prevtype)
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| 168 | {
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| 169 | const char *contenttype = NULL;
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| 170 | unsigned int i;
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| 171 | /*
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| 172 | * No type was specified, we scan through a few well-known
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| 173 | * extensions and pick the first we match!
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| 174 | */
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| 175 | struct ContentType {
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| 176 | const char *extension;
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| 177 | const char *type;
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| 178 | };
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| 179 | static const struct ContentType ctts[]={
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| 180 | {".gif", "image/gif"},
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| 181 | {".jpg", "image/jpeg"},
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| 182 | {".jpeg", "image/jpeg"},
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| 183 | {".txt", "text/plain"},
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| 184 | {".html", "text/html"},
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| 185 | {".xml", "application/xml"}
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| 186 | };
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| 187 |
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| 188 | if(prevtype)
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| 189 | /* default to the previously set/used! */
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| 190 | contenttype = prevtype;
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| 191 | else
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| 192 | contenttype = HTTPPOST_CONTENTTYPE_DEFAULT;
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| 193 |
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| 194 | if(filename) { /* in case a NULL was passed in */
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| 195 | for(i = 0; i<sizeof(ctts)/sizeof(ctts[0]); i++) {
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| 196 | if(strlen(filename) >= strlen(ctts[i].extension)) {
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| 197 | if(strcasecompare(filename +
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| 198 | strlen(filename) - strlen(ctts[i].extension),
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| 199 | ctts[i].extension)) {
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| 200 | contenttype = ctts[i].type;
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| 201 | break;
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| 202 | }
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| 203 | }
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| 204 | }
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| 205 | }
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| 206 | /* we have a contenttype by now */
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| 207 | return contenttype;
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| 208 | }
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| 209 |
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| 210 | /***************************************************************************
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| 211 | *
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| 212 | * FormAdd()
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| 213 | *
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| 214 | * Stores a formpost parameter and builds the appropriate linked list.
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| 215 | *
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| 216 | * Has two principal functionalities: using files and byte arrays as
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| 217 | * post parts. Byte arrays are either copied or just the pointer is stored
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| 218 | * (as the user requests) while for files only the filename and not the
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| 219 | * content is stored.
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| 220 | *
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| 221 | * While you may have only one byte array for each name, multiple filenames
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| 222 | * are allowed (and because of this feature CURLFORM_END is needed after
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| 223 | * using CURLFORM_FILE).
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| 224 | *
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| 225 | * Examples:
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| 226 | *
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| 227 | * Simple name/value pair with copied contents:
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| 228 | * curl_formadd (&post, &last, CURLFORM_COPYNAME, "name",
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| 229 | * CURLFORM_COPYCONTENTS, "value", CURLFORM_END);
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| 230 | *
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| 231 | * name/value pair where only the content pointer is remembered:
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| 232 | * curl_formadd (&post, &last, CURLFORM_COPYNAME, "name",
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| 233 | * CURLFORM_PTRCONTENTS, ptr, CURLFORM_CONTENTSLENGTH, 10, CURLFORM_END);
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| 234 | * (if CURLFORM_CONTENTSLENGTH is missing strlen () is used)
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| 235 | *
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| 236 | * storing a filename (CONTENTTYPE is optional!):
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| 237 | * curl_formadd (&post, &last, CURLFORM_COPYNAME, "name",
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| 238 | * CURLFORM_FILE, "filename1", CURLFORM_CONTENTTYPE, "plain/text",
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| 239 | * CURLFORM_END);
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| 240 | *
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| 241 | * storing multiple filenames:
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| 242 | * curl_formadd (&post, &last, CURLFORM_COPYNAME, "name",
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| 243 | * CURLFORM_FILE, "filename1", CURLFORM_FILE, "filename2", CURLFORM_END);
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| 244 | *
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| 245 | * Returns:
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| 246 | * CURL_FORMADD_OK on success
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| 247 | * CURL_FORMADD_MEMORY if the FormInfo allocation fails
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| 248 | * CURL_FORMADD_OPTION_TWICE if one option is given twice for one Form
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| 249 | * CURL_FORMADD_NULL if a null pointer was given for a char
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| 250 | * CURL_FORMADD_MEMORY if the allocation of a FormInfo struct failed
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| 251 | * CURL_FORMADD_UNKNOWN_OPTION if an unknown option was used
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| 252 | * CURL_FORMADD_INCOMPLETE if the some FormInfo is not complete (or error)
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| 253 | * CURL_FORMADD_MEMORY if a HttpPost struct cannot be allocated
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| 254 | * CURL_FORMADD_MEMORY if some allocation for string copying failed.
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| 255 | * CURL_FORMADD_ILLEGAL_ARRAY if an illegal option is used in an array
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| 256 | *
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| 257 | ***************************************************************************/
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| 258 |
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| 259 | static
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| 260 | CURLFORMcode FormAdd(struct curl_httppost **httppost,
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| 261 | struct curl_httppost **last_post,
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| 262 | va_list params)
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| 263 | {
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| 264 | FormInfo *first_form, *current_form, *form = NULL;
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| 265 | CURLFORMcode return_value = CURL_FORMADD_OK;
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| 266 | const char *prevtype = NULL;
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| 267 | struct curl_httppost *post = NULL;
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| 268 | CURLformoption option;
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| 269 | struct curl_forms *forms = NULL;
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| 270 | char *array_value = NULL; /* value read from an array */
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| 271 |
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| 272 | /* This is a state variable, that if TRUE means that we're parsing an
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| 273 | array that we got passed to us. If FALSE we're parsing the input
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| 274 | va_list arguments. */
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| 275 | bool array_state = FALSE;
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| 276 |
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| 277 | /*
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| 278 | * We need to allocate the first struct to fill in.
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| 279 | */
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| 280 | first_form = calloc(1, sizeof(struct FormInfo));
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| 281 | if(!first_form)
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| 282 | return CURL_FORMADD_MEMORY;
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| 283 |
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| 284 | current_form = first_form;
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| 285 |
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| 286 | /*
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| 287 | * Loop through all the options set. Break if we have an error to report.
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| 288 | */
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| 289 | while(return_value == CURL_FORMADD_OK) {
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| 290 |
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| 291 | /* first see if we have more parts of the array param */
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| 292 | if(array_state && forms) {
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| 293 | /* get the upcoming option from the given array */
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| 294 | option = forms->option;
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| 295 | array_value = (char *)forms->value;
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| 296 |
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| 297 | forms++; /* advance this to next entry */
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| 298 | if(CURLFORM_END == option) {
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| 299 | /* end of array state */
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| 300 | array_state = FALSE;
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| 301 | continue;
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| 302 | }
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| 303 | }
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| 304 | else {
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| 305 | /* This is not array-state, get next option */
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| 306 | option = va_arg(params, CURLformoption);
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| 307 | if(CURLFORM_END == option)
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| 308 | break;
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| 309 | }
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| 310 |
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| 311 | switch(option) {
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| 312 | case CURLFORM_ARRAY:
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| 313 | if(array_state)
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| 314 | /* we don't support an array from within an array */
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| 315 | return_value = CURL_FORMADD_ILLEGAL_ARRAY;
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| 316 | else {
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| 317 | forms = va_arg(params, struct curl_forms *);
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| 318 | if(forms)
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| 319 | array_state = TRUE;
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| 320 | else
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| 321 | return_value = CURL_FORMADD_NULL;
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| 322 | }
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| 323 | break;
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| 324 |
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| 325 | /*
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| 326 | * Set the Name property.
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| 327 | */
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| 328 | case CURLFORM_PTRNAME:
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| 329 | #ifdef CURL_DOES_CONVERSIONS
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| 330 | /* Treat CURLFORM_PTR like CURLFORM_COPYNAME so that libcurl will copy
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| 331 | * the data in all cases so that we'll have safe memory for the eventual
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| 332 | * conversion.
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| 333 | */
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| 334 | #else
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| 335 | current_form->flags |= HTTPPOST_PTRNAME; /* fall through */
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| 336 | #endif
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| 337 | /* FALLTHROUGH */
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| 338 | case CURLFORM_COPYNAME:
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| 339 | if(current_form->name)
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| 340 | return_value = CURL_FORMADD_OPTION_TWICE;
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| 341 | else {
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| 342 | char *name = array_state?
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| 343 | array_value:va_arg(params, char *);
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| 344 | if(name)
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| 345 | current_form->name = name; /* store for the moment */
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| 346 | else
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| 347 | return_value = CURL_FORMADD_NULL;
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| 348 | }
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| 349 | break;
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| 350 | case CURLFORM_NAMELENGTH:
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| 351 | if(current_form->namelength)
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| 352 | return_value = CURL_FORMADD_OPTION_TWICE;
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| 353 | else
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| 354 | current_form->namelength =
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| 355 | array_state?(size_t)array_value:(size_t)va_arg(params, long);
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| 356 | break;
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| 357 |
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| 358 | /*
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| 359 | * Set the contents property.
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| 360 | */
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| 361 | case CURLFORM_PTRCONTENTS:
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| 362 | current_form->flags |= HTTPPOST_PTRCONTENTS; /* fall through */
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| 363 | case CURLFORM_COPYCONTENTS:
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| 364 | if(current_form->value)
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| 365 | return_value = CURL_FORMADD_OPTION_TWICE;
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| 366 | else {
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| 367 | char *value =
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| 368 | array_state?array_value:va_arg(params, char *);
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| 369 | if(value)
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| 370 | current_form->value = value; /* store for the moment */
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| 371 | else
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| 372 | return_value = CURL_FORMADD_NULL;
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| 373 | }
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| 374 | break;
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| 375 | case CURLFORM_CONTENTSLENGTH:
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| 376 | current_form->contentslength =
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| 377 | array_state?(size_t)array_value:(size_t)va_arg(params, long);
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| 378 | break;
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| 379 |
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| 380 | case CURLFORM_CONTENTLEN:
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| 381 | current_form->flags |= CURL_HTTPPOST_LARGE;
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| 382 | current_form->contentslength =
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| 383 | array_state?(curl_off_t)(size_t)array_value:va_arg(params, curl_off_t);
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| 384 | break;
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| 385 |
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| 386 | /* Get contents from a given file name */
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| 387 | case CURLFORM_FILECONTENT:
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| 388 | if(current_form->flags & (HTTPPOST_PTRCONTENTS|HTTPPOST_READFILE))
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| 389 | return_value = CURL_FORMADD_OPTION_TWICE;
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| 390 | else {
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| 391 | const char *filename = array_state?
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| 392 | array_value:va_arg(params, char *);
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| 393 | if(filename) {
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| 394 | current_form->value = strdup(filename);
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| 395 | if(!current_form->value)
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| 396 | return_value = CURL_FORMADD_MEMORY;
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| 397 | else {
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| 398 | current_form->flags |= HTTPPOST_READFILE;
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| 399 | current_form->value_alloc = TRUE;
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| 400 | }
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| 401 | }
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| 402 | else
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| 403 | return_value = CURL_FORMADD_NULL;
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| 404 | }
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| 405 | break;
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| 406 |
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| 407 | /* We upload a file */
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| 408 | case CURLFORM_FILE:
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| 409 | {
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| 410 | const char *filename = array_state?array_value:
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| 411 | va_arg(params, char *);
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| 412 |
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| 413 | if(current_form->value) {
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| 414 | if(current_form->flags & HTTPPOST_FILENAME) {
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| 415 | if(filename) {
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| 416 | char *fname = strdup(filename);
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| 417 | if(!fname)
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| 418 | return_value = CURL_FORMADD_MEMORY;
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| 419 | else {
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| 420 | form = AddFormInfo(fname, NULL, current_form);
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| 421 | if(!form) {
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| 422 | free(fname);
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| 423 | return_value = CURL_FORMADD_MEMORY;
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| 424 | }
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| 425 | else {
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| 426 | form->value_alloc = TRUE;
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| 427 | current_form = form;
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| 428 | form = NULL;
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| 429 | }
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| 430 | }
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| 431 | }
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| 432 | else
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| 433 | return_value = CURL_FORMADD_NULL;
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| 434 | }
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| 435 | else
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| 436 | return_value = CURL_FORMADD_OPTION_TWICE;
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| 437 | }
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| 438 | else {
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| 439 | if(filename) {
|
---|
| 440 | current_form->value = strdup(filename);
|
---|
| 441 | if(!current_form->value)
|
---|
| 442 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 443 | else {
|
---|
| 444 | current_form->flags |= HTTPPOST_FILENAME;
|
---|
| 445 | current_form->value_alloc = TRUE;
|
---|
| 446 | }
|
---|
| 447 | }
|
---|
| 448 | else
|
---|
| 449 | return_value = CURL_FORMADD_NULL;
|
---|
| 450 | }
|
---|
| 451 | break;
|
---|
| 452 | }
|
---|
| 453 |
|
---|
| 454 | case CURLFORM_BUFFERPTR:
|
---|
| 455 | current_form->flags |= HTTPPOST_PTRBUFFER|HTTPPOST_BUFFER;
|
---|
| 456 | if(current_form->buffer)
|
---|
| 457 | return_value = CURL_FORMADD_OPTION_TWICE;
|
---|
| 458 | else {
|
---|
| 459 | char *buffer =
|
---|
| 460 | array_state?array_value:va_arg(params, char *);
|
---|
| 461 | if(buffer) {
|
---|
| 462 | current_form->buffer = buffer; /* store for the moment */
|
---|
| 463 | current_form->value = buffer; /* make it non-NULL to be accepted
|
---|
| 464 | as fine */
|
---|
| 465 | }
|
---|
| 466 | else
|
---|
| 467 | return_value = CURL_FORMADD_NULL;
|
---|
| 468 | }
|
---|
| 469 | break;
|
---|
| 470 |
|
---|
| 471 | case CURLFORM_BUFFERLENGTH:
|
---|
| 472 | if(current_form->bufferlength)
|
---|
| 473 | return_value = CURL_FORMADD_OPTION_TWICE;
|
---|
| 474 | else
|
---|
| 475 | current_form->bufferlength =
|
---|
| 476 | array_state?(size_t)array_value:(size_t)va_arg(params, long);
|
---|
| 477 | break;
|
---|
| 478 |
|
---|
| 479 | case CURLFORM_STREAM:
|
---|
| 480 | current_form->flags |= HTTPPOST_CALLBACK;
|
---|
| 481 | if(current_form->userp)
|
---|
| 482 | return_value = CURL_FORMADD_OPTION_TWICE;
|
---|
| 483 | else {
|
---|
| 484 | char *userp =
|
---|
| 485 | array_state?array_value:va_arg(params, char *);
|
---|
| 486 | if(userp) {
|
---|
| 487 | current_form->userp = userp;
|
---|
| 488 | current_form->value = userp; /* this isn't strictly true but we
|
---|
| 489 | derive a value from this later on
|
---|
| 490 | and we need this non-NULL to be
|
---|
| 491 | accepted as a fine form part */
|
---|
| 492 | }
|
---|
| 493 | else
|
---|
| 494 | return_value = CURL_FORMADD_NULL;
|
---|
| 495 | }
|
---|
| 496 | break;
|
---|
| 497 |
|
---|
| 498 | case CURLFORM_CONTENTTYPE:
|
---|
| 499 | {
|
---|
| 500 | const char *contenttype =
|
---|
| 501 | array_state?array_value:va_arg(params, char *);
|
---|
| 502 | if(current_form->contenttype) {
|
---|
| 503 | if(current_form->flags & HTTPPOST_FILENAME) {
|
---|
| 504 | if(contenttype) {
|
---|
| 505 | char *type = strdup(contenttype);
|
---|
| 506 | if(!type)
|
---|
| 507 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 508 | else {
|
---|
| 509 | form = AddFormInfo(NULL, type, current_form);
|
---|
| 510 | if(!form) {
|
---|
| 511 | free(type);
|
---|
| 512 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 513 | }
|
---|
| 514 | else {
|
---|
| 515 | form->contenttype_alloc = TRUE;
|
---|
| 516 | current_form = form;
|
---|
| 517 | form = NULL;
|
---|
| 518 | }
|
---|
| 519 | }
|
---|
| 520 | }
|
---|
| 521 | else
|
---|
| 522 | return_value = CURL_FORMADD_NULL;
|
---|
| 523 | }
|
---|
| 524 | else
|
---|
| 525 | return_value = CURL_FORMADD_OPTION_TWICE;
|
---|
| 526 | }
|
---|
| 527 | else {
|
---|
| 528 | if(contenttype) {
|
---|
| 529 | current_form->contenttype = strdup(contenttype);
|
---|
| 530 | if(!current_form->contenttype)
|
---|
| 531 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 532 | else
|
---|
| 533 | current_form->contenttype_alloc = TRUE;
|
---|
| 534 | }
|
---|
| 535 | else
|
---|
| 536 | return_value = CURL_FORMADD_NULL;
|
---|
| 537 | }
|
---|
| 538 | break;
|
---|
| 539 | }
|
---|
| 540 | case CURLFORM_CONTENTHEADER:
|
---|
| 541 | {
|
---|
| 542 | /* this "cast increases required alignment of target type" but
|
---|
| 543 | we consider it OK anyway */
|
---|
| 544 | struct curl_slist *list = array_state?
|
---|
| 545 | (struct curl_slist *)(void *)array_value:
|
---|
| 546 | va_arg(params, struct curl_slist *);
|
---|
| 547 |
|
---|
| 548 | if(current_form->contentheader)
|
---|
| 549 | return_value = CURL_FORMADD_OPTION_TWICE;
|
---|
| 550 | else
|
---|
| 551 | current_form->contentheader = list;
|
---|
| 552 |
|
---|
| 553 | break;
|
---|
| 554 | }
|
---|
| 555 | case CURLFORM_FILENAME:
|
---|
| 556 | case CURLFORM_BUFFER:
|
---|
| 557 | {
|
---|
| 558 | const char *filename = array_state?array_value:
|
---|
| 559 | va_arg(params, char *);
|
---|
| 560 | if(current_form->showfilename)
|
---|
| 561 | return_value = CURL_FORMADD_OPTION_TWICE;
|
---|
| 562 | else {
|
---|
| 563 | current_form->showfilename = strdup(filename);
|
---|
| 564 | if(!current_form->showfilename)
|
---|
| 565 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 566 | else
|
---|
| 567 | current_form->showfilename_alloc = TRUE;
|
---|
| 568 | }
|
---|
| 569 | break;
|
---|
| 570 | }
|
---|
| 571 | default:
|
---|
| 572 | return_value = CURL_FORMADD_UNKNOWN_OPTION;
|
---|
| 573 | break;
|
---|
| 574 | }
|
---|
| 575 | }
|
---|
| 576 |
|
---|
| 577 | if(CURL_FORMADD_OK != return_value) {
|
---|
| 578 | /* On error, free allocated fields for all nodes of the FormInfo linked
|
---|
| 579 | list without deallocating nodes. List nodes are deallocated later on */
|
---|
| 580 | FormInfo *ptr;
|
---|
| 581 | for(ptr = first_form; ptr != NULL; ptr = ptr->more) {
|
---|
| 582 | if(ptr->name_alloc) {
|
---|
| 583 | Curl_safefree(ptr->name);
|
---|
| 584 | ptr->name_alloc = FALSE;
|
---|
| 585 | }
|
---|
| 586 | if(ptr->value_alloc) {
|
---|
| 587 | Curl_safefree(ptr->value);
|
---|
| 588 | ptr->value_alloc = FALSE;
|
---|
| 589 | }
|
---|
| 590 | if(ptr->contenttype_alloc) {
|
---|
| 591 | Curl_safefree(ptr->contenttype);
|
---|
| 592 | ptr->contenttype_alloc = FALSE;
|
---|
| 593 | }
|
---|
| 594 | if(ptr->showfilename_alloc) {
|
---|
| 595 | Curl_safefree(ptr->showfilename);
|
---|
| 596 | ptr->showfilename_alloc = FALSE;
|
---|
| 597 | }
|
---|
| 598 | }
|
---|
| 599 | }
|
---|
| 600 |
|
---|
| 601 | if(CURL_FORMADD_OK == return_value) {
|
---|
| 602 | /* go through the list, check for completeness and if everything is
|
---|
| 603 | * alright add the HttpPost item otherwise set return_value accordingly */
|
---|
| 604 |
|
---|
| 605 | post = NULL;
|
---|
| 606 | for(form = first_form;
|
---|
| 607 | form != NULL;
|
---|
| 608 | form = form->more) {
|
---|
| 609 | if(((!form->name || !form->value) && !post) ||
|
---|
| 610 | ( (form->contentslength) &&
|
---|
| 611 | (form->flags & HTTPPOST_FILENAME) ) ||
|
---|
| 612 | ( (form->flags & HTTPPOST_FILENAME) &&
|
---|
| 613 | (form->flags & HTTPPOST_PTRCONTENTS) ) ||
|
---|
| 614 |
|
---|
| 615 | ( (!form->buffer) &&
|
---|
| 616 | (form->flags & HTTPPOST_BUFFER) &&
|
---|
| 617 | (form->flags & HTTPPOST_PTRBUFFER) ) ||
|
---|
| 618 |
|
---|
| 619 | ( (form->flags & HTTPPOST_READFILE) &&
|
---|
| 620 | (form->flags & HTTPPOST_PTRCONTENTS) )
|
---|
| 621 | ) {
|
---|
| 622 | return_value = CURL_FORMADD_INCOMPLETE;
|
---|
| 623 | break;
|
---|
| 624 | }
|
---|
| 625 | if(((form->flags & HTTPPOST_FILENAME) ||
|
---|
| 626 | (form->flags & HTTPPOST_BUFFER)) &&
|
---|
| 627 | !form->contenttype) {
|
---|
| 628 | char *f = form->flags & HTTPPOST_BUFFER?
|
---|
| 629 | form->showfilename : form->value;
|
---|
| 630 |
|
---|
| 631 | /* our contenttype is missing */
|
---|
| 632 | form->contenttype = strdup(ContentTypeForFilename(f, prevtype));
|
---|
| 633 | if(!form->contenttype) {
|
---|
| 634 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 635 | break;
|
---|
| 636 | }
|
---|
| 637 | form->contenttype_alloc = TRUE;
|
---|
| 638 | }
|
---|
| 639 | if(form->name && form->namelength) {
|
---|
| 640 | /* Name should not contain nul bytes. */
|
---|
| 641 | size_t i;
|
---|
| 642 | for(i = 0; i < form->namelength; i++)
|
---|
| 643 | if(!form->name[i]) {
|
---|
| 644 | return_value = CURL_FORMADD_NULL;
|
---|
| 645 | break;
|
---|
| 646 | }
|
---|
| 647 | if(return_value != CURL_FORMADD_OK)
|
---|
| 648 | break;
|
---|
| 649 | }
|
---|
| 650 | if(!(form->flags & HTTPPOST_PTRNAME) &&
|
---|
| 651 | (form == first_form) ) {
|
---|
| 652 | /* Note that there's small risk that form->name is NULL here if the
|
---|
| 653 | app passed in a bad combo, so we better check for that first. */
|
---|
| 654 | if(form->name) {
|
---|
| 655 | /* copy name (without strdup; possibly not nul-terminated) */
|
---|
| 656 | form->name = Curl_memdup(form->name, form->namelength?
|
---|
| 657 | form->namelength:
|
---|
| 658 | strlen(form->name) + 1);
|
---|
| 659 | }
|
---|
| 660 | if(!form->name) {
|
---|
| 661 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 662 | break;
|
---|
| 663 | }
|
---|
| 664 | form->name_alloc = TRUE;
|
---|
| 665 | }
|
---|
| 666 | if(!(form->flags & (HTTPPOST_FILENAME | HTTPPOST_READFILE |
|
---|
| 667 | HTTPPOST_PTRCONTENTS | HTTPPOST_PTRBUFFER |
|
---|
| 668 | HTTPPOST_CALLBACK)) && form->value) {
|
---|
| 669 | /* copy value (without strdup; possibly contains null characters) */
|
---|
| 670 | size_t clen = (size_t) form->contentslength;
|
---|
| 671 | if(!clen)
|
---|
| 672 | clen = strlen(form->value) + 1;
|
---|
| 673 |
|
---|
| 674 | form->value = Curl_memdup(form->value, clen);
|
---|
| 675 |
|
---|
| 676 | if(!form->value) {
|
---|
| 677 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 678 | break;
|
---|
| 679 | }
|
---|
| 680 | form->value_alloc = TRUE;
|
---|
| 681 | }
|
---|
| 682 | post = AddHttpPost(form->name, form->namelength,
|
---|
| 683 | form->value, form->contentslength,
|
---|
| 684 | form->buffer, form->bufferlength,
|
---|
| 685 | form->contenttype, form->flags,
|
---|
| 686 | form->contentheader, form->showfilename,
|
---|
| 687 | form->userp,
|
---|
| 688 | post, httppost,
|
---|
| 689 | last_post);
|
---|
| 690 |
|
---|
| 691 | if(!post) {
|
---|
| 692 | return_value = CURL_FORMADD_MEMORY;
|
---|
| 693 | break;
|
---|
| 694 | }
|
---|
| 695 |
|
---|
| 696 | if(form->contenttype)
|
---|
| 697 | prevtype = form->contenttype;
|
---|
| 698 | }
|
---|
| 699 | if(CURL_FORMADD_OK != return_value) {
|
---|
| 700 | /* On error, free allocated fields for nodes of the FormInfo linked
|
---|
| 701 | list which are not already owned by the httppost linked list
|
---|
| 702 | without deallocating nodes. List nodes are deallocated later on */
|
---|
| 703 | FormInfo *ptr;
|
---|
| 704 | for(ptr = form; ptr != NULL; ptr = ptr->more) {
|
---|
| 705 | if(ptr->name_alloc) {
|
---|
| 706 | Curl_safefree(ptr->name);
|
---|
| 707 | ptr->name_alloc = FALSE;
|
---|
| 708 | }
|
---|
| 709 | if(ptr->value_alloc) {
|
---|
| 710 | Curl_safefree(ptr->value);
|
---|
| 711 | ptr->value_alloc = FALSE;
|
---|
| 712 | }
|
---|
| 713 | if(ptr->contenttype_alloc) {
|
---|
| 714 | Curl_safefree(ptr->contenttype);
|
---|
| 715 | ptr->contenttype_alloc = FALSE;
|
---|
| 716 | }
|
---|
| 717 | if(ptr->showfilename_alloc) {
|
---|
| 718 | Curl_safefree(ptr->showfilename);
|
---|
| 719 | ptr->showfilename_alloc = FALSE;
|
---|
| 720 | }
|
---|
| 721 | }
|
---|
| 722 | }
|
---|
| 723 | }
|
---|
| 724 |
|
---|
| 725 | /* Always deallocate FormInfo linked list nodes without touching node
|
---|
| 726 | fields given that these have either been deallocated or are owned
|
---|
| 727 | now by the httppost linked list */
|
---|
| 728 | while(first_form) {
|
---|
| 729 | FormInfo *ptr = first_form->more;
|
---|
| 730 | free(first_form);
|
---|
| 731 | first_form = ptr;
|
---|
| 732 | }
|
---|
| 733 |
|
---|
| 734 | return return_value;
|
---|
| 735 | }
|
---|
| 736 |
|
---|
| 737 | /*
|
---|
| 738 | * curl_formadd() is a public API to add a section to the multipart formpost.
|
---|
| 739 | *
|
---|
| 740 | * @unittest: 1308
|
---|
| 741 | */
|
---|
| 742 |
|
---|
| 743 | CURLFORMcode curl_formadd(struct curl_httppost **httppost,
|
---|
| 744 | struct curl_httppost **last_post,
|
---|
| 745 | ...)
|
---|
| 746 | {
|
---|
| 747 | va_list arg;
|
---|
| 748 | CURLFORMcode result;
|
---|
| 749 | va_start(arg, last_post);
|
---|
| 750 | result = FormAdd(httppost, last_post, arg);
|
---|
| 751 | va_end(arg);
|
---|
| 752 | return result;
|
---|
| 753 | }
|
---|
| 754 |
|
---|
| 755 | /*
|
---|
| 756 | * curl_formget()
|
---|
| 757 | * Serialize a curl_httppost struct.
|
---|
| 758 | * Returns 0 on success.
|
---|
| 759 | *
|
---|
| 760 | * @unittest: 1308
|
---|
| 761 | */
|
---|
| 762 | int curl_formget(struct curl_httppost *form, void *arg,
|
---|
| 763 | curl_formget_callback append)
|
---|
| 764 | {
|
---|
| 765 | CURLcode result;
|
---|
| 766 | curl_mimepart toppart;
|
---|
| 767 |
|
---|
| 768 | Curl_mime_initpart(&toppart, NULL); /* default form is empty */
|
---|
| 769 | result = Curl_getformdata(NULL, &toppart, form, NULL);
|
---|
| 770 | if(!result)
|
---|
| 771 | result = Curl_mime_prepare_headers(&toppart, "multipart/form-data",
|
---|
| 772 | NULL, MIMESTRATEGY_FORM);
|
---|
| 773 |
|
---|
| 774 | while(!result) {
|
---|
[367] | 775 | char buffer[1024/*8192*/];
|
---|
[337] | 776 | size_t nread = Curl_mime_read(buffer, 1, sizeof buffer, &toppart);
|
---|
| 777 |
|
---|
| 778 | if(!nread)
|
---|
| 779 | break;
|
---|
| 780 |
|
---|
| 781 | switch(nread) {
|
---|
| 782 | default:
|
---|
| 783 | if(append(arg, buffer, nread) != nread)
|
---|
| 784 | result = CURLE_READ_ERROR;
|
---|
| 785 | break;
|
---|
| 786 | case CURL_READFUNC_ABORT:
|
---|
| 787 | case CURL_READFUNC_PAUSE:
|
---|
| 788 | break;
|
---|
| 789 | }
|
---|
| 790 | }
|
---|
| 791 |
|
---|
| 792 | Curl_mime_cleanpart(&toppart);
|
---|
| 793 | return (int) result;
|
---|
| 794 | }
|
---|
| 795 |
|
---|
| 796 | /*
|
---|
| 797 | * curl_formfree() is an external function to free up a whole form post
|
---|
| 798 | * chain
|
---|
| 799 | */
|
---|
| 800 | void curl_formfree(struct curl_httppost *form)
|
---|
| 801 | {
|
---|
| 802 | struct curl_httppost *next;
|
---|
| 803 |
|
---|
| 804 | if(!form)
|
---|
| 805 | /* no form to free, just get out of this */
|
---|
| 806 | return;
|
---|
| 807 |
|
---|
| 808 | do {
|
---|
| 809 | next = form->next; /* the following form line */
|
---|
| 810 |
|
---|
| 811 | /* recurse to sub-contents */
|
---|
| 812 | curl_formfree(form->more);
|
---|
| 813 |
|
---|
| 814 | if(!(form->flags & HTTPPOST_PTRNAME))
|
---|
| 815 | free(form->name); /* free the name */
|
---|
| 816 | if(!(form->flags &
|
---|
| 817 | (HTTPPOST_PTRCONTENTS|HTTPPOST_BUFFER|HTTPPOST_CALLBACK))
|
---|
| 818 | )
|
---|
| 819 | free(form->contents); /* free the contents */
|
---|
| 820 | free(form->contenttype); /* free the content type */
|
---|
| 821 | free(form->showfilename); /* free the faked file name */
|
---|
| 822 | free(form); /* free the struct */
|
---|
| 823 | form = next;
|
---|
| 824 | } while(form); /* continue */
|
---|
| 825 | }
|
---|
| 826 |
|
---|
| 827 |
|
---|
| 828 | /* Set mime part name, taking care of non nul-terminated name string. */
|
---|
| 829 | static CURLcode setname(curl_mimepart *part, const char *name, size_t len)
|
---|
| 830 | {
|
---|
| 831 | char *zname;
|
---|
| 832 | CURLcode res;
|
---|
| 833 |
|
---|
| 834 | if(!name || !len)
|
---|
| 835 | return curl_mime_name(part, name);
|
---|
| 836 | zname = malloc(len + 1);
|
---|
| 837 | if(!zname)
|
---|
| 838 | return CURLE_OUT_OF_MEMORY;
|
---|
| 839 | memcpy(zname, name, len);
|
---|
| 840 | zname[len] = '\0';
|
---|
| 841 | res = curl_mime_name(part, zname);
|
---|
| 842 | free(zname);
|
---|
| 843 | return res;
|
---|
| 844 | }
|
---|
| 845 |
|
---|
| 846 | /*
|
---|
| 847 | * Curl_getformdata() converts a linked list of "meta data" into a mime
|
---|
| 848 | * structure. The input list is in 'post', while the output is stored in
|
---|
| 849 | * mime part at '*finalform'.
|
---|
| 850 | *
|
---|
| 851 | * This function will not do a failf() for the potential memory failures but
|
---|
| 852 | * should for all other errors it spots. Just note that this function MAY get
|
---|
| 853 | * a NULL pointer in the 'data' argument.
|
---|
| 854 | */
|
---|
| 855 |
|
---|
| 856 | CURLcode Curl_getformdata(struct Curl_easy *data,
|
---|
| 857 | curl_mimepart *finalform,
|
---|
| 858 | struct curl_httppost *post,
|
---|
| 859 | curl_read_callback fread_func)
|
---|
| 860 | {
|
---|
| 861 | CURLcode result = CURLE_OK;
|
---|
| 862 | curl_mime *form = NULL;
|
---|
| 863 | curl_mime *multipart;
|
---|
| 864 | curl_mimepart *part;
|
---|
| 865 | struct curl_httppost *file;
|
---|
| 866 |
|
---|
| 867 | Curl_mime_cleanpart(finalform); /* default form is empty */
|
---|
| 868 |
|
---|
| 869 | if(!post)
|
---|
| 870 | return result; /* no input => no output! */
|
---|
| 871 |
|
---|
| 872 | form = curl_mime_init(data);
|
---|
| 873 | if(!form)
|
---|
| 874 | result = CURLE_OUT_OF_MEMORY;
|
---|
| 875 |
|
---|
| 876 | if(!result)
|
---|
| 877 | result = curl_mime_subparts(finalform, form);
|
---|
| 878 |
|
---|
| 879 | /* Process each top part. */
|
---|
| 880 | for(; !result && post; post = post->next) {
|
---|
| 881 | /* If we have more than a file here, create a mime subpart and fill it. */
|
---|
| 882 | multipart = form;
|
---|
| 883 | if(post->more) {
|
---|
| 884 | part = curl_mime_addpart(form);
|
---|
| 885 | if(!part)
|
---|
| 886 | result = CURLE_OUT_OF_MEMORY;
|
---|
| 887 | if(!result)
|
---|
| 888 | result = setname(part, post->name, post->namelength);
|
---|
| 889 | if(!result) {
|
---|
| 890 | multipart = curl_mime_init(data);
|
---|
| 891 | if(!multipart)
|
---|
| 892 | result = CURLE_OUT_OF_MEMORY;
|
---|
| 893 | }
|
---|
| 894 | if(!result)
|
---|
| 895 | result = curl_mime_subparts(part, multipart);
|
---|
| 896 | }
|
---|
| 897 |
|
---|
| 898 | /* Generate all the part contents. */
|
---|
| 899 | for(file = post; !result && file; file = file->more) {
|
---|
| 900 | /* Create the part. */
|
---|
| 901 | part = curl_mime_addpart(multipart);
|
---|
| 902 | if(!part)
|
---|
| 903 | result = CURLE_OUT_OF_MEMORY;
|
---|
| 904 |
|
---|
| 905 | /* Set the headers. */
|
---|
| 906 | if(!result)
|
---|
| 907 | result = curl_mime_headers(part, file->contentheader, 0);
|
---|
| 908 |
|
---|
| 909 | /* Set the content type. */
|
---|
| 910 | if(!result && file->contenttype)
|
---|
| 911 | result = curl_mime_type(part, file->contenttype);
|
---|
| 912 |
|
---|
| 913 | /* Set field name. */
|
---|
| 914 | if(!result && !post->more)
|
---|
| 915 | result = setname(part, post->name, post->namelength);
|
---|
| 916 |
|
---|
| 917 | /* Process contents. */
|
---|
| 918 | if(!result) {
|
---|
| 919 | curl_off_t clen = post->contentslength;
|
---|
| 920 |
|
---|
| 921 | if(post->flags & CURL_HTTPPOST_LARGE)
|
---|
| 922 | clen = post->contentlen;
|
---|
| 923 | if(!clen)
|
---|
| 924 | clen = -1;
|
---|
| 925 |
|
---|
| 926 | if(post->flags & (HTTPPOST_FILENAME | HTTPPOST_READFILE)) {
|
---|
| 927 | if(!strcmp(file->contents, "-")) {
|
---|
| 928 | /* There are a few cases where the code below won't work; in
|
---|
| 929 | particular, freopen(stdin) by the caller is not guaranteed
|
---|
| 930 | to result as expected. This feature has been kept for backward
|
---|
| 931 | compatibility: use of "-" pseudo file name should be avoided. */
|
---|
| 932 | result = curl_mime_data_cb(part, (curl_off_t) -1,
|
---|
| 933 | (curl_read_callback) fread,
|
---|
| 934 | (curl_seek_callback) fseek,
|
---|
| 935 | NULL, (void *) stdin);
|
---|
| 936 | }
|
---|
| 937 | else
|
---|
| 938 | result = curl_mime_filedata(part, file->contents);
|
---|
| 939 | if(!result && (post->flags & HTTPPOST_READFILE))
|
---|
| 940 | result = curl_mime_filename(part, NULL);
|
---|
| 941 | }
|
---|
| 942 | else if(post->flags & HTTPPOST_BUFFER)
|
---|
| 943 | result = curl_mime_data(part, post->buffer,
|
---|
| 944 | post->bufferlength? post->bufferlength: -1);
|
---|
| 945 | else if(post->flags & HTTPPOST_CALLBACK)
|
---|
| 946 | /* the contents should be read with the callback and the size is set
|
---|
| 947 | with the contentslength */
|
---|
| 948 | result = curl_mime_data_cb(part, clen,
|
---|
| 949 | fread_func, NULL, NULL, post->userp);
|
---|
| 950 | else {
|
---|
| 951 | result = curl_mime_data(part, post->contents, (ssize_t) clen);
|
---|
| 952 | #ifdef CURL_DOES_CONVERSIONS
|
---|
| 953 | /* Convert textual contents now. */
|
---|
| 954 | if(!result && data && part->datasize)
|
---|
| 955 | result = Curl_convert_to_network(data, part->data, part->datasize);
|
---|
| 956 | #endif
|
---|
| 957 | }
|
---|
| 958 | }
|
---|
| 959 |
|
---|
| 960 | /* Set fake file name. */
|
---|
| 961 | if(!result && post->showfilename)
|
---|
| 962 | if(post->more || (post->flags & (HTTPPOST_FILENAME | HTTPPOST_BUFFER |
|
---|
| 963 | HTTPPOST_CALLBACK)))
|
---|
| 964 | result = curl_mime_filename(part, post->showfilename);
|
---|
| 965 | }
|
---|
| 966 | }
|
---|
| 967 |
|
---|
| 968 | if(result)
|
---|
| 969 | Curl_mime_cleanpart(finalform);
|
---|
| 970 |
|
---|
| 971 | return result;
|
---|
| 972 | }
|
---|
| 973 |
|
---|
| 974 | #else /* CURL_DISABLE_HTTP */
|
---|
| 975 | CURLFORMcode curl_formadd(struct curl_httppost **httppost,
|
---|
| 976 | struct curl_httppost **last_post,
|
---|
| 977 | ...)
|
---|
| 978 | {
|
---|
| 979 | (void)httppost;
|
---|
| 980 | (void)last_post;
|
---|
| 981 | return CURL_FORMADD_DISABLED;
|
---|
| 982 | }
|
---|
| 983 |
|
---|
| 984 | int curl_formget(struct curl_httppost *form, void *arg,
|
---|
| 985 | curl_formget_callback append)
|
---|
| 986 | {
|
---|
| 987 | (void) form;
|
---|
| 988 | (void) arg;
|
---|
| 989 | (void) append;
|
---|
| 990 | return CURL_FORMADD_DISABLED;
|
---|
| 991 | }
|
---|
| 992 |
|
---|
| 993 | void curl_formfree(struct curl_httppost *form)
|
---|
| 994 | {
|
---|
| 995 | (void)form;
|
---|
| 996 | /* does nothing HTTP is disabled */
|
---|
| 997 | }
|
---|
| 998 |
|
---|
| 999 |
|
---|
| 1000 | #endif /* !defined(CURL_DISABLE_HTTP) */
|
---|