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/*
* a simple urlopener
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#define LEN(arr) ((int) (sizeof (arr) / sizeof (arr)[0]))
#define BUFFSIZE 256 /* size of malloc buffers (max program/extension list length) */
char *programs[][2] =
{
{"default", /* this is the default program */ "/usr/bin/qutebrowser"},
{"jpg,jpeg,png", "/usr/bin/feh"},
{"gif,gifv,webm,mp4,mp3,wav,flac", "/usr/bin/mpv --loop --force-window=yes"},
{"pdf", "mupdf"}
};
int
islink(char *url)
{
/*
* terribly check if something has a "protocol://"
* if it does, we assume it is a link
*/
char *p = NULL;
if ((p = strstr(url, "://")))
{
int s = (p-url);
/*
* check if the number of characters before the '://' is >0 && <5 && contains a '.'
* 10 is a guess, i have no idea what the limit of a protocol identifier is
*/
if (s > 0 && s <= 10 && strchr(url, '.') != NULL)
// it's probably a link
return 1;
}
return 0;
}
int
getext(char *url)
{
/*
* check if the extension of the url (if exists) is in our array
* if it is, return the index on the array, otherwise 0
*/
int ret = 0;
char *p = NULL;
if ((p = strrchr(url, '.')+1))
{
for (int i = 0; i < LEN(programs); i++)
{
char *buff = malloc(BUFFSIZE);
if (buff == NULL)
return 0;
strncpy(buff, programs[i][0], BUFFSIZE-1);
char *t = strtok(buff, ",");
while (t != NULL)
{
if (strcmp(t, p) == 0)
{
ret = i;
}
t = strtok(NULL, ",");
}
free(buff);
}
}
return ret;
}
int
main(int argc, char *argv[])
{
int link = 0;
int ext = 0;
// we don't care about children
signal(SIGCHLD, SIG_IGN);
for (int i = 1; i < argc; i++)
{
/*
* loop through every argument, check if it is a link
* if we think it is a link, check if the extension exists in the array
* fork, execute
*/
link = islink(argv[i]);
//printf("%s is probably %s link\n", argv[i], (link == 1) ? "a" : "not a");
if (link == 1)
{
ext = getext(argv[i]);
//printf("program to run is: \"%s %s\"\n", programs[ext][1], argv[i]);
pid_t pid = fork();
if (pid == 0)
{
// child process
// close std{out,err}
fclose(stdout);
fclose(stderr);
char *args[20];
char *buff = malloc(BUFFSIZE);
if (buff == NULL)
{
perror("malloc");
return -1;
}
/*
* the program we're calling might have arguments,
* so we tokenise the string and add each part to an array
* that we will use in execvp
*/
strncpy(buff, programs[ext][1], BUFFSIZE-1);
char *t = strtok(buff, " ");
int z = 0;
while (t != NULL)
{
args[z] = t;
t = strtok(NULL, " ");
z++;
}
args[z] = argv[i];
args[z+1] = (char *)0;
execvp(args[0], args);
_exit(1);
}
else if (pid == -1)
{
perror("fork error");
}
}
}
return 0;
}
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