mirror of
https://github.com/moparisthebest/curl
synced 2024-11-15 22:15:13 -05:00
9885c9508e
The previous use of snprintf() could make libcurl silently truncate some input data and not report that back on overly large input, which could make data get sent over the network in a bad format. Example: $ curl --form 'a=b' -H "Content-Type: $(perl -e 'print "A"x4100')"
100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
#ifndef HEADER_CURL_FORMDATA_H
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#define HEADER_CURL_FORMDATA_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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enum formtype {
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FORM_DATAMEM, /* already allocated FORM_DATA memory */
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FORM_DATA, /* form metadata (convert to network encoding if necessary) */
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FORM_CONTENT, /* form content (never convert) */
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FORM_CALLBACK, /* 'line' points to the custom pointer we pass to the callback
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*/
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FORM_FILE /* 'line' points to a file name we should read from
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to create the form data (never convert) */
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};
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/* plain and simple linked list with lines to send */
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struct FormData {
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struct FormData *next;
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enum formtype type;
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char *line;
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size_t length;
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};
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struct Form {
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struct FormData *data; /* current form line to send */
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size_t sent; /* number of bytes of the current line that has
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already been sent in a previous invoke */
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FILE *fp; /* file to read from */
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curl_read_callback fread_func; /* fread callback pointer */
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};
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/* used by FormAdd for temporary storage */
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typedef struct FormInfo {
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char *name;
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bool name_alloc;
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size_t namelength;
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char *value;
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bool value_alloc;
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curl_off_t contentslength;
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char *contenttype;
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bool contenttype_alloc;
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long flags;
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char *buffer; /* pointer to existing buffer used for file upload */
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size_t bufferlength;
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char *showfilename; /* The file name to show. If not set, the actual
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file name will be used */
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bool showfilename_alloc;
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char *userp; /* pointer for the read callback */
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struct curl_slist* contentheader;
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struct FormInfo *more;
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} FormInfo;
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int Curl_FormInit(struct Form *form, struct FormData *formdata);
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CURLcode Curl_getformdata(struct Curl_easy *data,
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struct FormData **,
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struct curl_httppost *post,
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const char *custom_contenttype,
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curl_off_t *size);
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/* fread() emulation */
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size_t Curl_FormReader(char *buffer,
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size_t size,
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size_t nitems,
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FILE *mydata);
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/*
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* Curl_formpostheader() returns the first line of the formpost, the
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* request-header part (which is not part of the request-body like the rest of
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* the post).
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*/
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char *Curl_formpostheader(void *formp, size_t *len);
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char *Curl_FormBoundary(void);
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void Curl_formclean(struct FormData **);
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CURLcode Curl_formconvert(struct Curl_easy *, struct FormData *);
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#endif /* HEADER_CURL_FORMDATA_H */
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