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|
// Thierry Bremard
// spawner code
// to get child process output to http client under apache cgi modules
// January 2010
#include <custom/all.h>
#define bzero(a) memset(a,0,sizeof(a)) //easier -- shortcut
BOOL IsWinNT(void);
void ErrorMessage(char *str);
BOOL IsWinNT(void) //check if we're running NT
{
OSVERSIONINFO osv;
osv.dwOSVersionInfoSize = sizeof(osv);
GetVersionEx(&osv);
return (osv.dwPlatformId == VER_PLATFORM_WIN32_NT);
}
void ErrorMessage(char *str) //display detailed error info
{
LPVOID msg;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &msg,
0, NULL );
printf("%s: %s\n",str,msg);
LocalFree(msg);
}
void ReadProcessStdout(HANDLE read_stdout)
{
char buffer[1024];
unsigned long bread; //bytes read
unsigned long avail;
bzero(buffer);
PeekNamedPipe(read_stdout,buffer,1023,&bread,&avail,NULL);
//check to see if there is any data to read from stdout
if (bread != 0)
{
if(!ReadFile(read_stdout,buffer,4,&bread,NULL)) //read the stdout pipe
{
puts("Error reading the stdout pipe in the thread");
}
// prints on stdout the output of process
fwrite(buffer,bread,1, stdout);
}
return 0;
}
int SpawnProcess(void)
{
char buf[1024]; //i/o buffer
int len;
char *app_spawned;
STARTUPINFO si;
SECURITY_ATTRIBUTES sa;
SECURITY_DESCRIPTOR sd; //security information for pipes
PROCESS_INFORMATION pi;
HANDLE newstdin,newstdout,write_stdin; //pipe handles
unsigned long exit=0; //process exit code
unsigned long bread; //bytes read
unsigned long avail; //bytes available
BOOL read;
HANDLE read_stdout;
BOOL PROCESS_ON, bValue ;
LPTSTR lpCommandLine ;
if (IsWinNT()) //initialize security descriptor (Windows NT)
{
InitializeSecurityDescriptor(&sd,SECURITY_DESCRIPTOR_REVISION);
SetSecurityDescriptorDacl(&sd, true, NULL, false);
sa.lpSecurityDescriptor = &sd;
}
else
{
sa.lpSecurityDescriptor = NULL;
}
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.bInheritHandle = true; //allow inheritable handles
if (!CreatePipe(&newstdin,&write_stdin,&sa,0)) //create stdin pipe
{
ErrorMessage("CreatePipe");
return 0;
}
if (!CreatePipe(&read_stdout,&newstdout,&sa,0)) //create stdout pipe
{
ErrorMessage("CreatePipe");
CloseHandle(newstdin);
CloseHandle(write_stdin);
return 0;
}
GetStartupInfo(&si); //set startupinfo for the spawned process
/*
The dwFlags member tells CreateProcess how to make the process.
STARTF_USESTDHANDLES validates the hStd* members. STARTF_USESHOWWINDOW
validates the wShowWindow member.
*/
si.dwFlags = STARTF_USESTDHANDLES|STARTF_USESHOWWINDOW;
si.wShowWindow = SW_HIDE;
si.hStdOutput = newstdout;
si.hStdError = newstdout; //set the new handles for the child process
si.hStdInput = newstdin;
//spawn the child process
app_spawned="D:\\Prog\\google\\searcher_6\\searcher_5\\searcher.exe";
lpCommandLine = NULL;/*"searcher.exe download&mp3"*/;
lpCommandLine = "searcher.exe \"president&sarkozy\"";
bValue = CreateProcess(app_spawned, lpCommandLine ,
NULL,
NULL,
TRUE,
0, // No creation flags CREATE_NEW_CONSOLE,
NULL, // Use parent's environment block
NULL, // Use parent's starting directory
&si, // Pointer to STARTUPINFO structure
&pi); // Pointer to PROCESS_INFORMATION structure
if (! bValue)
{
ErrorMessage("CreateProcess");
CloseHandle(newstdin);
CloseHandle(newstdout);
CloseHandle(read_stdout);
CloseHandle(write_stdin);
return 0;
}
PROCESS_ON=1;
while(PROCESS_ON)
{
GetExitCodeProcess(pi.hProcess,&exit); //while the process is running
if (exit != STILL_ACTIVE)
{
PROCESS_ON=0;
}
ReadProcessStdout(read_stdout);
}
CloseHandle(pi.hThread);
CloseHandle(pi.hProcess);
CloseHandle(newstdin); //clean stuff up
CloseHandle(newstdout);
CloseHandle(read_stdout);
CloseHandle(write_stdin);
return 1;
}
/*
int main()
{
SpawnProcess();
return 0;
}
*/ |
CGI sous Windows XP : récupérer la sortie d'un .exe appelé depuis un CGI .bat
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