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socket_wrapper: truncate packets to a 1500 byte payload

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Truncate sendto(), recvfrom(), send() and recv() to 1500 bytes
so that're getting a correctly formatted pcap file and the result
look more like real network traffic.

metze
(This used to be commit 5b01206f1b)
This commit is contained in:
Stefan Metzmacher 2008-06-10 08:33:24 +02:00
parent 7721ea8f9c
commit 47b106c0ae
1 changed files with 8 additions and 0 deletions
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8
source4/lib/socket_wrapper/socket_wrapper.c
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@ -1643,6 +1643,8 @@ _PUBLIC_ ssize_t swrap_recvfrom(int s, void *buf, size_t len, int flags, struct
return real_recvfrom(s, buf, len, flags, from, fromlen);
}
len = MIN(len, 1500);
/* irix 6.4 forgets to null terminate the sun_path string :-( */
memset(&un_addr, 0, sizeof(un_addr));
ret = real_recvfrom(s, buf, len, flags, (struct sockaddr *)&un_addr, &un_addrlen);
@ -1671,6 +1673,8 @@ _PUBLIC_ ssize_t swrap_sendto(int s, const void *buf, size_t len, int flags, con
return real_sendto(s, buf, len, flags, to, tolen);
}
len = MIN(len, 1500);
switch (si->type) {
case SOCK_STREAM:
ret = real_send(s, buf, len, flags);
@ -1764,6 +1768,8 @@ _PUBLIC_ ssize_t swrap_recv(int s, void *buf, size_t len, int flags)
return real_recv(s, buf, len, flags);
}
len = MIN(len, 1500);
ret = real_recv(s, buf, len, flags);
if (ret == -1 && errno != EAGAIN && errno != ENOBUFS) {
swrap_dump_packet(si, NULL, SWRAP_RECV_RST, NULL, 0);
@ -1786,6 +1792,8 @@ _PUBLIC_ ssize_t swrap_send(int s, const void *buf, size_t len, int flags)
return real_send(s, buf, len, flags);
}
len = MIN(len, 1500);
ret = real_send(s, buf, len, flags);
if (ret == -1) {