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root/portenum.c @ 368d31d4

d2fb3b1b Hamish Coleman
/*
* enumerate windows serial ports

Resources:

http://www.lookrs232.com/com_port_programming/api_enumports.htm
http://forum.sysinternals.com/forum_posts.asp?TID=4544
http://www.naughter.com/enumser.html
http://msdn.microsoft.com/en-us/library/ms793116.aspx
http://msdn.microsoft.com/en-us/library/bb663174.aspx


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HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM

key = device driver name
val = COMn name


HKLM \ SYSTEM \ CurrentControlSet\Enum\ * *
PortName

http://msdn.microsoft.com/en-us/library/ms800601.aspx

d2fb3b1b Hamish Coleman
*/

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#include <windows.h>
#include <stdio.h>
#include <setupapi.h>

int enumports_level1() {
char *buf;
DWORD size=0;
DWORD nrports=0;
PORT_INFO_1 *pi1;

printf("getting level 1 information\n\n");

EnumPorts(NULL,1,NULL,0,&size,&nrports);
/* size now contains the required number of bytes */

if(!size) {
printf("size==0!!\n");
return 1;
}

buf=malloc(size);
if (!buf) {
printf("malloc fail\n");
return 1;
}

if(!EnumPorts(NULL,1,buf,size,&size,&nrports)) {
printf("enumports fail\n");
free(buf);
return 1;
}

printf("nrports=%lu\n",nrports);

pi1 = (PORT_INFO_1*)buf;
while(nrports) {
printf("port = %s\n",pi1->pName);
pi1++;
nrports--;
}

free(buf);
return 0;
}

int enumports_level2() {
char *buf;
DWORD size=0;
DWORD nrports=0;
PORT_INFO_2 *pi2;

printf("\n\ngetting level 2 information\n\n");

EnumPorts(NULL,2,NULL,0,&size,&nrports);

if(!size) {
printf("size==0!!\n");
return 1;
}

buf=malloc(size);
if (!buf) {
printf("malloc fail\n");
return 1;
}

if(!EnumPorts(NULL,2,buf,size,&size,&nrports)) {
printf("enumports fail\n");
free(buf);
return 1;
}
printf("nrports=%lu\n",nrports);

pi2 = (PORT_INFO_2*)buf;
printf("%-10s %-15s %-15s %-4s %-8s\n",
"Port","Monitor","Desc","Type","Reserved"
);
while(nrports) {
printf("%-10s %-15s %-15s %4lu %8lu\n",
pi2->pPortName, pi2->pMonitorName, pi2->pDescription,
pi2->fPortType, pi2->Reserved
);
pi2++;
nrports--;
}

free(buf);
return 0;
}

int m3() {
int bufsize;
char *guid;

HDEVINFO diset;

int i=0;

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printf("\n\nGet DiGetDeviceInterfaceDetail\n\n");
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SetupDiClassGuidsFromName("Ports",NULL,0,&bufsize);
if(!bufsize){printf("size==0!!\n");return 1;}

if (!(guid=malloc(bufsize))){printf("malloc fail\n");return 1;}
if (!SetupDiClassGuidsFromName("Ports",guid,bufsize,&bufsize)) {
printf("!SetupDiClassGuidsFromName\n");
return 1;
}

if ((diset = SetupDiGetClassDevs(guid,NULL,0,DIGCF_DEVICEINTERFACE))==INVALID_HANDLE_VALUE) {
printf("SetupDiGetClassDevs fail %lu\n",GetLastError());
return 1;
}

while(1) {
SP_DEVICE_INTERFACE_DATA didata;
SP_DEVICE_INTERFACE_DETAIL_DATA *didatad;
SP_DEVINFO_DATA dedata;
/* Hello, I am a retardo windows interface */
didata.cbSize=sizeof(didata);
dedata.cbSize=sizeof(dedata);

if (!SetupDiEnumDeviceInterfaces(diset,NULL,guid,i,&didata)) {
/* end of list? */
if (GetLastError()!=ERROR_NO_MORE_ITEMS) {
printf("!SetupDiEnumDeviceInterfaces %lu\n",GetLastError());
}
break;
}

SetupDiGetDeviceInterfaceDetail(diset,&didata,NULL,0,&bufsize,NULL);
if(!bufsize){printf("size==0!!\n");return 1;}

if (!(didatad=malloc(bufsize))){printf("malloc fail\n");return 1;}
/* GAH, stoopid interface */
didatad->cbSize=sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);

if (!SetupDiGetDeviceInterfaceDetail(diset,&didata,didatad,bufsize,&bufsize,&dedata)) {
printf("!SetupDiGetDeviceInterfaceDetail %lu\n",GetLastError());
return 1;
}

printf("DevicePath=%s\n",didatad->DevicePath);
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// reg = SetupDiOpenDevRegKey(diset,&didata,DICS_FLAG_GLOBAL,0,DIREG_DEV, KEY_ALL_ACCESS);

printf("\n");
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free(didatad);
i++;
}

SetupDiDestroyDeviceInfoList(diset);
free(guid);

return 0;
}

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int qdosdev() {
static char buf[65535];
char *p;

printf("\n\nGet QueryDosDevice\n\n");

if(QueryDosDevice(NULL, buf, sizeof(buf)) == 0) {
printf("QueryDosDevice: failed\n");
return 1;
}

p=&buf;
while (*p) {
p+=printf("%s\n",p);
}
return 0;
}

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int main(int argc, char **argv) {

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//enumports_level1();
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enumports_level2();
m3();
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qdosdev();
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return 0;
}