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[client] lgmp: snapshot session records

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This commit is contained in:
Geoffrey McRae
2026-08-24 13:15:12 +10:00
parent 56ea0cfaba
commit 357d5fd3c5
1 changed files with 41 additions and 39 deletions
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80
client/transports/LGMP/lgmp.c
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@@ -955,8 +955,9 @@ static bool lgmp_parseSession(struct LG_Transport * this,
return false;
}
const KVMFR * header = (const KVMFR *)data;
if (memcmp(header->magic, KVMFR_MAGIC, sizeof(header->magic)) != 0)
KVMFR header;
memcpy(&header, data, sizeof(header));
if (memcmp(header.magic, KVMFR_MAGIC, sizeof(header.magic)) != 0)
{
uint32_t current;
if (lgmp_recoveryVersions(this, NULL, &current) &&
@@ -965,73 +966,74 @@ static bool lgmp_parseSession(struct LG_Transport * this,
return false;
}
if (header->version != KVMFR_VERSION)
if (header.version != KVMFR_VERSION)
{
lgmp_setVersionMismatch(session, "KVMFR", KVMFR_VERSION,
header->version);
header.version);
return false;
}
str_copy(session->version, sizeof(session->version), header->hostver,
sizeof(header->hostver));
if (header->features & KVMFR_FEATURE_SETCURSORPOS)
str_copy(session->version, sizeof(session->version), header.hostver,
sizeof(header.hostver));
if (header.features & KVMFR_FEATURE_SETCURSORPOS)
session->features |= LG_TRANSPORT_FEATURE_SET_CURSOR_POS;
if (header->features & KVMFR_FEATURE_WINDOWSIZE)
if (header.features & KVMFR_FEATURE_WINDOWSIZE)
session->features |= LG_TRANSPORT_FEATURE_WINDOW_SIZE;
if (header->features & KVMFR_FEATURE_FRAME_SCHEDULE)
if (header.features & KVMFR_FEATURE_FRAME_SCHEDULE)
session->features |= LG_TRANSPORT_FEATURE_FRAME_SCHEDULE;
if (header->features & KVMFR_FEATURE_INPUT)
if (header.features & KVMFR_FEATURE_INPUT)
session->features |= LG_TRANSPORT_FEATURE_INPUT;
if (header->features & KVMFR_FEATURE_CLIPBOARD)
if (header.features & KVMFR_FEATURE_CLIPBOARD)
session->features |= LG_TRANSPORT_FEATURE_CLIPBOARD;
data += sizeof(*header);
size -= sizeof(*header);
data += sizeof(header);
size -= sizeof(header);
while (size >= sizeof(KVMFRRecord))
{
const KVMFRRecord * record = (const KVMFRRecord *)data;
data += sizeof(*record);
size -= sizeof(*record);
if (record->size > size)
KVMFRRecord record;
memcpy(&record, data, sizeof(record));
const uint32_t recordSize = record.size;
data += sizeof(record);
size -= sizeof(record);
if (recordSize > size)
break;
switch (record->type)
switch (record.type)
{
case KVMFR_RECORD_VMINFO:
if (record->size >= sizeof(KVMFRRecord_VMInfo))
if (recordSize >= sizeof(KVMFRRecord_VMInfo))
{
const KVMFRRecord_VMInfo * info =
(const KVMFRRecord_VMInfo *)data;
memcpy(session->uuid, info->uuid, sizeof(session->uuid));
KVMFRRecord_VMInfo info;
memcpy(&info, data, sizeof(info));
memcpy(session->uuid, info.uuid, sizeof(session->uuid));
for (unsigned i = 0; i < sizeof(session->uuid); ++i)
session->uuidValid |= session->uuid[i] != 0;
str_copy(session->capture, sizeof(session->capture), info->capture,
sizeof(info->capture));
session->cpus = info->cpus;
session->cores = info->cores;
session->sockets = info->sockets;
str_copy(session->capture, sizeof(session->capture), info.capture,
sizeof(info.capture));
session->cpus = info.cpus;
session->cores = info.cores;
session->sockets = info.sockets;
const size_t fixed = offsetof(KVMFRRecord_VMInfo, model);
str_copy(session->cpuModel, sizeof(session->cpuModel), info->model,
record->size - fixed);
str_copy(session->cpuModel, sizeof(session->cpuModel),
(const char *)data + fixed, recordSize - fixed);
}
break;
case KVMFR_RECORD_OSINFO:
if (record->size >= sizeof(KVMFRRecord_OSInfo))
if (recordSize >= sizeof(KVMFRRecord_OSInfo))
{
const KVMFRRecord_OSInfo * info =
(const KVMFRRecord_OSInfo *)data;
session->os = info->os <= KVMFR_OS_OTHER ?
(LG_TransportGuestOS)info->os : LG_TRANSPORT_OS_OTHER;
KVMFRRecord_OSInfo info;
memcpy(&info, data, sizeof(info));
session->os = info.os <= KVMFR_OS_OTHER ?
(LG_TransportGuestOS)info.os : LG_TRANSPORT_OS_OTHER;
const size_t fixed = offsetof(KVMFRRecord_OSInfo, name);
str_copy(session->osName, sizeof(session->osName), info->name,
record->size - fixed);
str_copy(session->osName, sizeof(session->osName),
(const char *)data + fixed, recordSize - fixed);
}
break;
}
data += record->size;
size -= record->size;
data += recordSize;
size -= recordSize;
}
return true;