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shell32: Dynamically allocate argify buffer if the static one is too small.

This commit is contained in:
Vincent Povirk 2011-07-19 12:47:29 -05:00 committed by Alexandre Julliard
parent eeeca57072
commit 9b2968dc77
1 changed files with 13 additions and 4 deletions
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17
dlls/shell32/shlexec.c
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@ -781,7 +781,9 @@ static unsigned dde_connect(const WCHAR* key, const WCHAR* start, WCHAR* ddeexec
static const WCHAR wTopic[] = {'\\','t','o','p','i','c',0};
WCHAR regkey[256];
WCHAR * endkey = regkey + strlenW(key);
WCHAR app[256], topic[256], ifexec[256], res[256];
WCHAR app[256], topic[256], ifexec[256], static_res[256];
WCHAR * dynamic_res=NULL;
WCHAR * res;
LONG applen, topiclen, ifexeclen;
WCHAR * exec;
DWORD ddeInst = 0;
@ -896,9 +898,14 @@ static unsigned dde_connect(const WCHAR* key, const WCHAR* start, WCHAR* ddeexec
}
}
SHELL_ArgifyW(res, sizeof(res)/sizeof(WCHAR), exec, lpFile, pidl, szCommandline, &resultLen);
if (resultLen > sizeof(res)/sizeof(WCHAR))
ERR("Argify buffer not large enough, truncated\n");
SHELL_ArgifyW(static_res, sizeof(static_res)/sizeof(WCHAR), exec, lpFile, pidl, szCommandline, &resultLen);
if (resultLen > sizeof(static_res)/sizeof(WCHAR))
{
res = dynamic_res = HeapAlloc(GetProcessHeap(), 0, resultLen * sizeof(WCHAR));
SHELL_ArgifyW(dynamic_res, resultLen, exec, lpFile, pidl, szCommandline, NULL);
}
else
res = static_res;
TRACE("%s %s => %s\n", debugstr_w(exec), debugstr_w(lpFile), debugstr_w(res));
/* It's documented in the KB 330337 that IE has a bug and returns
@ -922,6 +929,8 @@ static unsigned dde_connect(const WCHAR* key, const WCHAR* start, WCHAR* ddeexec
WARN("DdeClientTransaction failed with error %04x\n", DdeGetLastError(ddeInst));
ret = 33;
HeapFree(GetProcessHeap(), 0, dynamic_res);
DdeDisconnect(hConv);
error: