From 76b8266f990a2912f42d1b7050840e8c7f14f2c2 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Wed, 21 Jun 2017 13:35:37 +0200 Subject: getaddrinfo: Avoid stack copy of IPv6 address --- sysdeps/posix/getaddrinfo.c | 45 +++++---------------------------------------- 1 file changed, 5 insertions(+), 40 deletions(-) (limited to 'sysdeps') diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c index a8bdd9a..4ec1796 100644 --- a/sysdeps/posix/getaddrinfo.c +++ b/sysdeps/posix/getaddrinfo.c @@ -539,46 +539,11 @@ gaih_inet (const char *name, const struct gaih_service *service, { char *scope_delim = strchr (name, SCOPE_DELIMITER); int e; - - { - bool malloc_namebuf = false; - char *namebuf = (char *) name; - - if (__glibc_unlikely (scope_delim != NULL)) - { - if (malloc_name) - *scope_delim = '\0'; - else - { - if (__libc_use_alloca (alloca_used - + scope_delim - name + 1)) - { - namebuf = alloca_account (scope_delim - name + 1, - alloca_used); - *((char *) __mempcpy (namebuf, name, - scope_delim - name)) = '\0'; - } - else - { - namebuf = __strndup (name, scope_delim - name); - if (namebuf == NULL) - { - assert (!malloc_name); - return -EAI_MEMORY; - } - malloc_namebuf = true; - } - } - } - - e = inet_pton (AF_INET6, namebuf, at->addr); - - if (malloc_namebuf) - free (namebuf); - else if (scope_delim != NULL && malloc_name) - /* Undo what we did above. */ - *scope_delim = SCOPE_DELIMITER; - } + if (scope_delim == NULL) + e = inet_pton (AF_INET6, name, at->addr); + else + e = __inet_pton_length (AF_INET6, name, scope_delim - name, + at->addr); if (e > 0) { if (req->ai_family == AF_UNSPEC || req->ai_family == AF_INET6) -- cgit v1.1