At the moment I am stuck trying to use sudo to run ifup from within my
frontend. This testing phase is important as I need to ascertain
myself that the class I am using can actually capture CLI output.
If anyone from Devuan knows of a Lazarus function that I can use to
capture the output of an external program running with root
privileges, it will be much of an impulse for my coding exercise.
I am using the TProcess class. The program runs sudo -s ifup wlan0
successfully but it is failing to capture the CLI output.
In the meantime I will continue debugging until I find a way of succeeding.
Edward.
On 18/08/2015, Edward Bartolo <edbarx@???> wrote:
> Lazarus frontend can now run external programs capturing their textual
> output. Hopefully, within a few days, the frontend will be Alpha. :)
>
> On 17/08/2015, Edward Bartolo <edbarx@???> wrote:
>> The Lazarus backend interface unit is as follows but still unfinished:
>>
>> ----------------------------------------
>> unit backend;
>>
>> {$mode objfpc}{$H+}
>>
>> interface
>>
>> uses
>> Classes, SysUtils, stdctrls;
>>
>> procedure Backend_Save(essid, pw: string);
>> procedure Backend_Save_Connect(essid, pw: string);
>> function Backend_Query_Connect(connection: string; var pw: string):
>> boolean;
>> function Backend_Delete_Connect(essid: string): boolean;
>> function Backend_Connection_Connect(essid: string): boolean;
>> function Backend_Disconnect_Active_Connection: boolean;
>> procedure Backend_Scan(aListBox: TListBox);
>> procedure Backend_Load_Existing(aListBox: TListBox);
>>
>> implementation
>>
>> const
>> opSave = 0;
>> opSaveConnect = 1;
>> opQueryConnect = 2;
>> opDeleteConnect = 3;
>> opConnectionConnect = 4;
>> opDisconnectActiveConnection = 5;
>> opScan = 6;
>> opLoadExisting = 7;
>>
>>
>> procedure Backend_Save(essid, pw: string);
>> begin
>> // backend opSave essid pw
>> end;
>>
>> procedure Backend_Save_Connect(essid, pw: string);
>> begin
>> // backend opSaveConnect essid pw
>> end;
>>
>> function Backend_Query_Connect(connection: string; var pw:string):
>> boolean;
>> begin
>> // backend opQueryConnect essid pw
>> end;
>>
>> function Backend_Delete_Connect(essid: string): boolean;
>> begin
>> // backend opDeleteConnect essid
>> result := true;
>> end;
>>
>> function Backend_Connection_Connect(essid: string): boolean;
>> begin
>> // backend opConnectionConnect essid
>> end;
>>
>> function Backend_Disconnect_Active_Connection: boolean;
>> begin
>> // backend opDisconnectActiveConnection
>> end;
>>
>> procedure Backend_Scan(aListBox: TListBox);
>> begin
>> // backend opScan stringlist
>> end;
>>
>> procedure Backend_Load_Existing(aListBox: TListBox);
>> begin
>> // backend opLoadExisting stringlist
>> end;
>>
>> end.
>> ---------------------------------------------
>>
>> On 17/08/2015, Edward Bartolo <edbarx@???> wrote:
>>> The Progress of My Coding Till Now:
>>>
>>> I am attaching two images of the GUI's main window and the only
>>> dialog. The GUI is programmed in Lazarus Pascal.
>>>
>>> The backend is in C. The code till now, although it doesn't do anything
>>> useful.
>>> ----------------------------------------------
>>> #include <stdio.h>
>>> #include <stdlib.h>
>>> #include <string.h>
>>> #include <unistd.h>
>>>
>>>
>>> using namespace std;
>>>
>>>
>>> #define opSave 0
>>> #define opSaveConnect 1
>>> #define opQueryConnect 2
>>> #define opDeleteConnect 3
>>> #define opConnectionConnect 4
>>> #define opDisconnectActiveConnection 5
>>> #define opScan 6
>>> #define opLoadExisting 7
>>>
>>> /*
>>> 1) Glib::spawn_sync instead of a pipe stream, provides a slot.
>>> 2) cmd trying to call an inexistent command still returns a valid
>>> pointer!
>>> verify cmd exists before calling exec
>>> */
>>>
>>> inline bool file_exists(char* name) {
>>> return (access(name, F_OK) != -1);
>>> }
>>>
>>>
>>> int exec(const char* cmd, char* out)
>>> {
>>> const int buf_size = 128;
>>>
>>> FILE * pipe = popen(cmd, "r");
>>> char buffer[buf_size];
>>> while(!feof(pipe)) {
>>> if(fgets(buffer, buf_size, pipe) != NULL)
>>> {
>>> if (out != NULL)
>>> strcat(out, buffer);
>>> else strcpy(out, buffer);
>>> }
>>> }
>>>
>>> return pclose(pipe);
>>> }
>>>
>>> int main(int argc, char *argv[])
>>> {
>>> char *out = 0;
>>> int switch_item = -1;
>>> if (argc > 1) switch_item = atoi(argv[1]);
>>>
>>> switch (switch_item) {
>>> case opSave:
>>> //saveFile(argv[2], argv[3]);
>>> exec("cat /etc/network/interfaces", out);
>>> //out[0] = ' ';
>>> printf(out);
>>>
>>> return 0;
>>>
>>> case opSaveConnect:
>>> //saveFile(argv[2], argv[3]);
>>> //Connect(argv[2]);
>>> return 0;
>>>
>>> case opQueryConnect:
>>>
>>> return 0;
>>>
>>> case opDeleteConnect:
>>>
>>> break;
>>>
>>> case opConnectionConnect:
>>>
>>> break;
>>>
>>> case opDisconnectActiveConnection:
>>>
>>> break;
>>>
>>> case opScan:
>>>
>>> break;
>>>
>>> case opLoadExisting:
>>>
>>> return 0;
>>> }
>>>
>>> return -1; // parameter not in range
>>> }
>>> ----------------------------------------------------------------
>>>
>>>
>>> On 17/08/2015, Rainer Weikusat <rainerweikusat@???> wrote:
>>>> James Powell <james4591@???> writes:
>>>>> While there are packages that can be invisible and unintrusive into
>>>>> the system, there are some that cannot.
>>>>>
>>>>> The problem is responsibility.
>>>>>
>>>>> Who wants to remain responsible for boot scripts? Upstream or vendor?
>>>>>
>>>>> Who wants responsibility for providing interoperability between
>>>>> projects? Upstream or downstream bazaar?
>>>>>
>>>>> Who wants responsibility for the userland? Upstream or the downstream
>>>>> bazaar?
>>>>
>>>> It's possible to frame this in more technical terms: Who'll end up
>>>> doing
>>>> system integration, system integrators or application developers? The
>>>> answer should (hopefully) be obvious.
>>>> _______________________________________________
>>>> Dng mailing list
>>>> Dng@???
>>>> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
>>>>
>>>
>>
>
::
Re: [DNG] Systemd Shims
