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// SPDX-License-Identifier: GPL-2.0
/* linux.c */
/* implements Linux specific functions */
#include "dive.h"
#include "subsurface-string.h"
#include "display.h"
#include "membuffer.h"
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <fnmatch.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <pwd.h>
// the DE should provide us with a default font and font size...
const char linux_system_divelist_default_font[] = "Sans";
const char *system_divelist_default_font = linux_system_divelist_default_font;
double system_divelist_default_font_size = -1.0;
bool subsurface_ignore_font(const char *font)
{
// there are no old default fonts to ignore
(void)font;
return false;
}
void subsurface_user_info(struct user_info *user)
{
struct passwd *pwd = getpwuid(getuid());
const char *username = getenv("USER");
if (pwd) {
if (!empty_string(pwd->pw_gecos))
user->name = pwd->pw_gecos;
if (!username)
username = pwd->pw_name;
}
if (!empty_string(username)) {
char hostname[64];
struct membuffer mb = {};
gethostname(hostname, sizeof(hostname));
put_format(&mb, "%s@%s", username, hostname);
user->email = mb_cstring(&mb);
free_buffer(&mb);
}
}
static const char *system_default_path_append(const char *append)
{
const char *home = getenv("HOME");
if (!home)
home = "~";
const char *path = "/.subsurface";
int len = strlen(home) + strlen(path) + 1;
if (append)
len += strlen(append) + 1;
char *buffer = (char *)malloc(len);
memset(buffer, 0, len);
strcat(buffer, home);
strcat(buffer, path);
if (append) {
strcat(buffer, "/");
strcat(buffer, append);
}
return buffer;
}
const char *system_default_directory(void)
{
static const char *path = NULL;
if (!path)
path = system_default_path_append(NULL);
return path;
}
const char *system_default_filename(void)
{
static const char *path = NULL;
if (!path) {
const char *user = getenv("LOGNAME");
if (empty_string(user))
user = "username";
char *filename = calloc(strlen(user) + 5, 1);
strcat(filename, user);
strcat(filename, ".xml");
path = system_default_path_append(filename);
free(filename);
}
return path;
}
int enumerate_devices(device_callback_t callback, void *userdata, int dc_type)
{
int index = -1, entries = 0;
DIR *dp = NULL;
struct dirent *ep = NULL;
size_t i;
FILE *file;
char *line = NULL;
char *fname;
size_t len;
if (dc_type != DC_TYPE_UEMIS) {
const char *dirname = "/dev";
const char *patterns[] = {
"ttyUSB*",
"ttyS*",
"ttyACM*",
"rfcomm*",
NULL
};
dp = opendir(dirname);
if (dp == NULL) {
return -1;
}
while ((ep = readdir(dp)) != NULL) {
for (i = 0; patterns[i] != NULL; ++i) {
if (fnmatch(patterns[i], ep->d_name, 0) == 0) {
char filename[1024];
int n = snprintf(filename, sizeof(filename), "%s/%s", dirname, ep->d_name);
if (n >= (int)sizeof(filename)) {
closedir(dp);
return -1;
}
callback(filename, userdata);
if (is_default_dive_computer_device(filename))
index = entries;
entries++;
break;
}
}
}
closedir(dp);
}
if (dc_type != DC_TYPE_SERIAL) {
int num_uemis = 0;
file = fopen("/proc/mounts", "r");
if (file == NULL)
return index;
while ((getline(&line, &len, file)) != -1) {
char *ptr = strstr(line, "UEMISSDA");
if (ptr) {
char *end = ptr, *start = ptr;
while (start > line && *start != ' ')
start--;
if (*start == ' ')
start++;
while (*end != ' ' && *end != '\0')
end++;
*end = '\0';
fname = strdup(start);
callback(fname, userdata);
if (is_default_dive_computer_device(fname))
index = entries;
entries++;
num_uemis++;
free((void *)fname);
}
}
free(line);
fclose(file);
if (num_uemis == 1 && entries == 1) /* if we found only one and it's a mounted Uemis, pick it */
index = 0;
}
return index;
}
/* NOP wrappers to comform with windows.c */
int subsurface_rename(const char *path, const char *newpath)
{
return rename(path, newpath);
}
int subsurface_open(const char *path, int oflags, mode_t mode)
{
return open(path, oflags, mode);
}
FILE *subsurface_fopen(const char *path, const char *mode)
{
return fopen(path, mode);
}
void *subsurface_opendir(const char *path)
{
return (void *)opendir(path);
}
int subsurface_access(const char *path, int mode)
{
return access(path, mode);
}
int subsurface_stat(const char* path, struct stat* buf)
{
return stat(path, buf);
}
struct zip *subsurface_zip_open_readonly(const char *path, int flags, int *errorp)
{
return zip_open(path, flags, errorp);
}
int subsurface_zip_close(struct zip *zip)
{
return zip_close(zip);
}
/* win32 console */
void subsurface_console_init(void)
{
/* NOP */
}
void subsurface_console_exit(void)
{
/* NOP */
}
bool subsurface_user_is_root()
{
return geteuid() == 0;
}
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