mirror of https://github.com/merbanan/rtl_433.git
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
// compat_paths addresses following compatibility issue:
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// topic: default search paths for config file
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// issue: Linux and Windows use different common paths for config files
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// solution: provide specific default paths for each system
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#ifndef _WIN32
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// Linux variant
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "compat_paths.h"
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char **compat_get_default_conf_paths(void)
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{
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static char *paths[4] = { NULL };
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static char buf[256] = "";
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char *env_config_home = getenv("XDG_CONFIG_HOME");
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if (!paths[0]) {
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paths[0] = "rtl_433.conf";
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if (env_config_home && *env_config_home)
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snprintf(buf, sizeof(buf), "%s%s", env_config_home, "/rtl_433/rtl_433.conf");
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else
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snprintf(buf, sizeof(buf), "%s%s", getenv("HOME"), "/.config/rtl_433/rtl_433.conf");
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paths[1] = buf;
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#define STR_VALUE(arg) #arg
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#define STR_EXPAND(s) STR_VALUE(s)
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paths[2] = STR_EXPAND(INSTALL_SYSCONFDIR) "/rtl_433/rtl_433.conf";
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paths[3] = NULL;
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};
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return paths;
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}
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#else
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// Windows variant
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#include <stdbool.h>
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#include <stddef.h>
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#include <shlobj.h>
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#include "compat_paths.h"
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char **compat_get_default_conf_paths(void)
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{
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static char bufs[3][256];
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static char *paths[4] = { NULL };
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if (paths[0]) return paths;
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// Working directory, i.e. where the binary is located
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if (GetModuleFileName(NULL, bufs[0], sizeof(bufs[0]))) {
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char *last_backslash = strrchr(bufs[0], '\\');
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if (last_backslash)
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*last_backslash = '\0';
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strcat_s(bufs[0], sizeof(bufs[0]), "\\rtl_433.conf");
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paths[0] = bufs[0];
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}
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else {
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paths[0] = NULL;
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}
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// Local per user configuration files %LocalAppData% (e.g. Win7: C:\Users\myusername\AppData\Local\rtl_433\rtl_433.conf)
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if (SHGetFolderPath(NULL, CSIDL_LOCAL_APPDATA, NULL, 0, bufs[1]) == S_OK) {
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strcat_s(bufs[1], sizeof(bufs[1]), "\\rtl_433\\rtl_433.conf");
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paths[1] = bufs[1];
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}
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else {
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paths[1] = NULL;
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}
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// Per machine configuration data %ProgramData% (e.g. Win7: C:\ProgramData\rtl_433\rtl_433.conf)
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if (SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL, 0, bufs[2]) == S_OK) {
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strcat_s(bufs[2], sizeof(bufs[2]), "\\rtl_433\\rtl_433.conf");
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paths[2] = bufs[2];
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}
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else {
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paths[2] = NULL;
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}
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paths[3] = NULL;
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return paths;
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}
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#endif // _WIN32 / !_WIN32
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