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strdup: remove the memchr check from Curl_strndup

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It makes it possible to clone a binary chunk of data.

Closes #12453
This commit is contained in:
Daniel Stenberg 2023-12-05 15:55:35 +01:00
parent c0dd06ecb3
commit 63cdaefbc3
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 2 additions and 6 deletions
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8
lib/strdup.c
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@ -104,18 +104,14 @@ void *Curl_memdup(const void *src, size_t length)
* Curl_strndup(source, length) * Curl_strndup(source, length)
* *
* Copies the 'source' string to a newly allocated buffer (that is returned). * Copies the 'source' string to a newly allocated buffer (that is returned).
* Copies not more than 'length' bytes (up to a null terminator) then adds a * Copies 'length' bytes then adds a null terminator.
* null terminator.
* *
* Returns the new pointer or NULL on failure. * Returns the new pointer or NULL on failure.
* *
***************************************************************************/ ***************************************************************************/
void *Curl_strndup(const char *src, size_t length) void *Curl_strndup(const char *src, size_t length)
{ {
char *buf = memchr(src, '\0', length); char *buf = malloc(length + 1);
if(buf)
length = buf - src;
buf = malloc(length + 1);
if(!buf) if(!buf)
return NULL; return NULL;
memcpy(buf, src, length); memcpy(buf, src, length);