From 07d86bec5eeaf19fe33dca99c8ebcbe9a77c3938 Mon Sep 17 00:00:00 2001 From: Damien Miller Date: Sun, 26 Mar 2006 14:19:21 +1100 Subject: - djm@cvs.openbsd.org 2006/03/25 00:05:41 [auth-bsdauth.c auth-skey.c auth.c auth2-chall.c channels.c] [clientloop.c deattack.c gss-genr.c kex.c key.c misc.c moduli.c] [monitor.c monitor_wrap.c packet.c scard.c sftp-server.c ssh-agent.c] [ssh-keyscan.c ssh.c sshconnect.c sshconnect2.c sshd.c uuencode.c] [xmalloc.c xmalloc.h] introduce xcalloc() and xasprintf() failure-checked allocations functions and use them throughout openssh xcalloc is particularly important because malloc(nmemb * size) is a dangerous idiom (subject to integer overflow) and it is time for it to die feedback and ok deraadt@ --- kex.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'kex.c') diff --git a/kex.c b/kex.c index 91081b18..030df6be 100644 --- a/kex.c +++ b/kex.c @@ -82,7 +82,7 @@ kex_buf2prop(Buffer *raw, int *first_kex_follows) int i; char **proposal; - proposal = xmalloc(PROPOSAL_MAX * sizeof(char *)); + proposal = xcalloc(PROPOSAL_MAX, sizeof(char *)); buffer_init(&b); buffer_append(&b, buffer_ptr(raw), buffer_len(raw)); @@ -217,8 +217,7 @@ kex_setup(char *proposal[PROPOSAL_MAX]) { Kex *kex; - kex = xmalloc(sizeof(*kex)); - memset(kex, 0, sizeof(*kex)); + kex = xcalloc(1, sizeof(*kex)); buffer_init(&kex->peer); buffer_init(&kex->my); kex_prop2buf(&kex->my, proposal); @@ -379,8 +378,7 @@ kex_choose_conf(Kex *kex) /* Algorithm Negotiation */ for (mode = 0; mode < MODE_MAX; mode++) { - newkeys = xmalloc(sizeof(*newkeys)); - memset(newkeys, 0, sizeof(*newkeys)); + newkeys = xcalloc(1, sizeof(*newkeys)); kex->newkeys[mode] = newkeys; ctos = (!kex->server && mode == MODE_OUT) || (kex->server && mode == MODE_IN); nenc = ctos ? PROPOSAL_ENC_ALGS_CTOS : PROPOSAL_ENC_ALGS_STOC; -- cgit v1.2.3