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/**
* @file config_global.c
*/
#include "spm.h"
/**
* Get path to user's local configuration directory
* (The path will be created if it doesn't exist)
* @return
*/
char *get_user_conf_dir(void) {
char *result = NULL;
wordexp_t wexp;
wordexp("~/.spm", &wexp, 0);
if (wexp.we_wordc != 0) {
result = (char *)calloc(strlen(wexp.we_wordv[0]) + 1, sizeof(char));
if (!result) {
wordfree(&wexp);
return NULL;
}
strncpy(result, wexp.we_wordv[0], strlen(wexp.we_wordv[0]));
if (access(result, F_OK) != 0) {
mkdirs(result, 0755);
}
}
wordfree(&wexp);
return result;
}
/**
* Get path to user's local configuration file
* @return
*/
char *get_user_config_file(void) {
const char *filename = "spm.conf";
char template[PATH_MAX];
char *ucd = get_user_conf_dir();
if (!ucd) {
return NULL;
}
// Initialize temporary path
template[0] = '\0';
sprintf(template, "%s%c%s", ucd, DIRSEP, filename);
if (access(template, F_OK) != 0) {
// No configuration exists, so fail
return NULL;
}
free(ucd);
// Allocate and return path to configuration file
return strdup(template);
}
/**
* Determine location of temporary storage location
* @return
*/
char *get_user_tmp_dir(void) {
char template[PATH_MAX];
char *ucd = get_user_conf_dir();
sprintf(template, "%s%c%s", ucd, DIRSEP, "tmp");
if (access(template, F_OK) != 0) {
if (mkdirs(template, 0755) != 0) {
return NULL;
}
}
free(ucd);
return strdup(template);
}
/**
* Determine location of package directory
* @return
*/
char *get_user_package_dir(void) {
char template[PATH_MAX];
char *ucd = get_user_conf_dir();
sprintf(template, "%s%c%s", ucd, DIRSEP, "pkgs");
if (access(template, F_OK) != 0) {
if (mkdirs(template, 0755) != 0) {
return NULL;
}
}
free(ucd);
return strdup(template);
}
/**
* Determine location of the package manifest
* @return
*/
char *get_package_manifest(void) {
char template[PATH_MAX];
char *ucd = get_user_conf_dir();
sprintf(template, "%s%c%s", ucd, DIRSEP, "manifest.dat");
if (access(template, F_OK) != 0) {
fprintf(stderr, "Package manifest not found: %s\n", template);
Manifest *manifest = manifest_from(PKG_DIR);
manifest_write(manifest);
manifest_free(manifest);
}
free(ucd);
return strdup(template);
}
/**
* Check whether SPM has access to external programs it needs
*/
void check_runtime_environment(void) {
int bad_rt = 0;
char *required[] = {
"file",
"patchelf",
"rsync",
"tar",
"bash",
"reloc",
NULL,
};
for (int i = 0; required[i] != NULL; i++) {
char *result = find_executable(required[i]);
if (!result) {
fprintf(stderr, "Required program '%s' is not installed\n", required[i]);
bad_rt = 1;
}
free(result);
}
if (bad_rt) {
exit(1);
}
}
/**
* Populate global configuration structure
*/
void init_config_global(void) {
SPM_GLOBAL.user_config_basedir = NULL;
SPM_GLOBAL.user_config_file = NULL;
SPM_GLOBAL.package_dir = NULL;
SPM_GLOBAL.tmp_dir = NULL;
SPM_GLOBAL.package_manifest = NULL;
SPM_GLOBAL.config = NULL;
SPM_GLOBAL.verbose = 0;
if (uname(&SPM_GLOBAL.sysinfo) != 0) {
fprintf(SYSERROR);
exit(1);
}
SPM_GLOBAL.user_config_basedir = get_user_conf_dir();
SPM_GLOBAL.user_config_file = get_user_config_file();
if (SPM_GLOBAL.user_config_file) {
SPM_GLOBAL.config = config_read(SPM_GLOBAL.user_config_file);
}
ConfigItem *item = NULL;
// Initialize temp directory
item = config_get(SPM_GLOBAL.config, "tmp_dir");
if (item) {
SPM_GLOBAL.tmp_dir = item->value;
if (access(SPM_GLOBAL.tmp_dir, F_OK) != 0) {
if (mkdirs(SPM_GLOBAL.tmp_dir, 0755) != 0) {
fprintf(stderr, "Unable to create global temporary directory: %s\n", SPM_GLOBAL.tmp_dir);
fprintf(SYSERROR);
exit(1);
}
}
}
else {
SPM_GLOBAL.tmp_dir = get_user_tmp_dir();
}
// Initialize package directory
item = config_get(SPM_GLOBAL.config, "package_dir");
if (item) {
SPM_GLOBAL.package_dir = item->value;
if (access(SPM_GLOBAL.package_dir, F_OK) != 0) {
if (mkdirs(SPM_GLOBAL.package_dir, 0755) != 0) {
fprintf(stderr, "Unable to create global package directory: %s\n", SPM_GLOBAL.package_dir);
fprintf(SYSERROR);
exit(1);
}
}
}
else {
SPM_GLOBAL.package_dir = get_user_package_dir();
}
// Initialize package manifest
item = config_get(SPM_GLOBAL.config, "package_manifest");
if (item) {
SPM_GLOBAL.package_manifest = item->value;
if (access(SPM_GLOBAL.package_manifest, F_OK) != 0) {
fprintf(stderr, "Package manifest not found: %s\n", SPM_GLOBAL.package_manifest);
Manifest *manifest = manifest_from(PKG_DIR);
manifest_write(manifest);
manifest_free(manifest);
}
}
else {
SPM_GLOBAL.package_manifest = get_package_manifest();
}
}
/**
* Free memory allocated for global configuration
*/
void free_global_config(void) {
if (SPM_GLOBAL.package_dir) {
free(SPM_GLOBAL.package_dir);
}
if (SPM_GLOBAL.tmp_dir) {
free(SPM_GLOBAL.tmp_dir);
}
if (SPM_GLOBAL.package_manifest) {
free(SPM_GLOBAL.package_manifest);
}
if (SPM_GLOBAL.user_config_basedir) {
free(SPM_GLOBAL.user_config_basedir);
}
if (SPM_GLOBAL.user_config_file) {
free(SPM_GLOBAL.user_config_file);
}
if (SPM_GLOBAL.config) {
config_free(SPM_GLOBAL.config);
}
}
/**
* Display global configuration data
*/
void show_global_config(void) {
printf("#---------------------------\n");
printf("#---- SPM CONFIGURATION ----\n");
printf("#---------------------------\n");
printf("# base dir: %s\n", SPM_GLOBAL.user_config_basedir ? SPM_GLOBAL.user_config_basedir : "none (check write permission on home directory)");
printf("# config file: %s\n", SPM_GLOBAL.user_config_file ? SPM_GLOBAL.user_config_file : "none");
if (SPM_GLOBAL.user_config_file) {
printf("# config file contents:\n");
for (int i = 0; SPM_GLOBAL.config[i] != NULL; i++) {
printf("# -> %s: %s\n", SPM_GLOBAL.config[i]->key, SPM_GLOBAL.config[i]->value);
}
}
printf("# package storage: %s\n", SPM_GLOBAL.package_dir);
printf("# temp storage: %s\n", SPM_GLOBAL.tmp_dir);
printf("# package manifest: %s\n", SPM_GLOBAL.package_manifest);
printf("\n");
}
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