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setopt: use memdup0 when cloning COPYPOSTFIELDS

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Closes #12651
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Daniel Stenberg 2024-01-07 16:11:01 +01:00
parent 2959f45b7d
commit ac4dbc9cb5
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1 changed files with 7 additions and 16 deletions
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23
lib/setopt.c
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@ -51,7 +51,7 @@
#include "altsvc.h"
#include "hsts.h"
#include "tftp.h"
#include "strdup.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
#include "curl_memory.h"
@ -508,26 +508,17 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option, va_list param)
(data->set.postfieldsize > (curl_off_t)((size_t)-1))))
result = CURLE_OUT_OF_MEMORY;
else {
char *p;
(void) Curl_setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
/* Allocate even when size == 0. This satisfies the need of possible
later address compare to detect the COPYPOSTFIELDS mode, and
to mark that postfields is used rather than read function or
form data.
later address compare to detect the COPYPOSTFIELDS mode, and to
mark that postfields is used rather than read function or form
data.
*/
p = malloc((size_t)(data->set.postfieldsize?
data->set.postfieldsize:1));
char *p = Curl_memdup0(argptr, (size_t)data->set.postfieldsize);
(void) Curl_setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
if(!p)
result = CURLE_OUT_OF_MEMORY;
else {
if(data->set.postfieldsize)
memcpy(p, argptr, (size_t)data->set.postfieldsize);
else
data->set.str[STRING_COPYPOSTFIELDS] = p;
}
}
}