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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "tool_setup.h"
#include "curlx.h"
#include "tool_cfgable.h"
#include "tool_writeout_json.h"
#include "tool_writeout.h"
#define MAX_JSON_STRING 100000
/* provide the given string in dynbuf as a quoted json string, but without the
outer quotes. The buffer is not inited by this function.
Return 0 on success, non-zero on error.
*/
int jsonquoted(const char *in, size_t len,
struct curlx_dynbuf *out, bool lowercase)
{
const unsigned char *i = (unsigned char *)in;
const unsigned char *in_end = &i[len];
CURLcode result = CURLE_OK;
for(; (i < in_end) && !result; i++) {
switch(*i) {
case '\\':
result = curlx_dyn_addn(out, "\\\\", 2);
break;
case '\"':
result = curlx_dyn_addn(out, "\\\"", 2);
break;
case '\b':
result = curlx_dyn_addn(out, "\\b", 2);
break;
case '\f':
result = curlx_dyn_addn(out, "\\f", 2);
break;
case '\n':
result = curlx_dyn_addn(out, "\\n", 2);
break;
case '\r':
result = curlx_dyn_addn(out, "\\r", 2);
break;
case '\t':
result = curlx_dyn_addn(out, "\\t", 2);
break;
default:
if(*i < 32)
result = curlx_dyn_addf(out, "\\u%04x", *i);
else {
char o = (char)*i;
if(lowercase && (o >= 'A' && o <= 'Z'))
/* do not use tolower() since that is locale specific */
o |= ('a' - 'A');
result = curlx_dyn_addn(out, &o, 1);
}
break;
}
}
if(result)
return (int)result;
return 0;
}
void jsonWriteString(FILE *stream, const char *in, bool lowercase)
{
struct curlx_dynbuf out;
curlx_dyn_init(&out, MAX_JSON_STRING);
if(!jsonquoted(in, strlen(in), &out, lowercase)) {
fputc('\"', stream);
if(curlx_dyn_len(&out))
fputs(curlx_dyn_ptr(&out), stream);
fputc('\"', stream);
}
curlx_dyn_free(&out);
}
void ourWriteOutJSON(FILE *stream, const struct writeoutvar mappings[],
size_t nentries,
struct per_transfer *per, CURLcode per_result)
{
size_t i;
fputs("{", stream);
for(i = 0; i < nentries; i++) {
if(mappings[i].writefunc &&
mappings[i].writefunc(stream, &mappings[i], per, per_result, true))
fputs(",", stream);
}
/* The variables are sorted in alphabetical order but as a special case
curl_version (which is not actually a --write-out variable) is last. */
fprintf(stream, "\"curl_version\":");
jsonWriteString(stream, curl_version(), FALSE);
fprintf(stream, "}");
}
#ifdef _MSC_VER
/* warning C4706: assignment within conditional expression */
#pragma warning(disable:4706)
#endif
void headerJSON(FILE *stream, struct per_transfer *per)
{
struct curl_header *header;
struct curl_header *prev = NULL;
fputc('{', stream);
while((header = curl_easy_nextheader(per->curl, CURLH_HEADER, -1,
prev))) {
if(header->amount > 1) {
if(!header->index) {
/* act on the 0-index entry and pull the others in, then output in a
JSON list */
size_t a = header->amount;
size_t i = 0;
char *name = header->name;
if(prev)
fputs(",\n", stream);
jsonWriteString(stream, header->name, TRUE);
fputc(':', stream);
prev = header;
fputc('[', stream);
do {
jsonWriteString(stream, header->value, FALSE);
if(++i >= a)
break;
fputc(',', stream);
if(curl_easy_header(per->curl, name, i, CURLH_HEADER,
-1, &header))
break;
} while(1);
fputc(']', stream);
}
}
else {
if(prev)
fputs(",\n", stream);
jsonWriteString(stream, header->name, TRUE);
fputc(':', stream);
fputc('[', stream);
jsonWriteString(stream, header->value, FALSE);
fputc(']', stream);
prev = header;
}
}
fputs("\n}", stream);
}
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