/*
* Copyright (C) 2009-2011 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "fileops.h"
#include "hashtable.h"
#include "config.h"
#include "git2/config.h"
#include "vector.h"
#if GIT_WIN32
# include <windows.h>
#endif
#include <ctype.h>
typedef struct {
git_config_file *file;
int priority;
} file_internal;
void git_config_free(git_config *cfg)
{
unsigned int i;
git_config_file *file;
file_internal *internal;
if (cfg == NULL)
return;
for(i = 0; i < cfg->files.length; ++i){
internal = git_vector_get(&cfg->files, i);
file = internal->file;
file->free(file);
free(internal);
}
git_vector_free(&cfg->files);
free(cfg);
}
static int config_backend_cmp(const void *a, const void *b)
{
const file_internal *bk_a = (const file_internal *)(a);
const file_internal *bk_b = (const file_internal *)(b);
return bk_b->priority - bk_a->priority;
}
int git_config_new(git_config **out)
{
git_config *cfg;
cfg = git__malloc(sizeof(git_config));
if (cfg == NULL)
return GIT_ENOMEM;
memset(cfg, 0x0, sizeof(git_config));
if (git_vector_init(&cfg->files, 3, config_backend_cmp) < 0) {
free(cfg);
return GIT_ENOMEM;
}
*out = cfg;
return GIT_SUCCESS;
}
int git_config_add_file_ondisk(git_config *cfg, const char *path, int priority)
{
git_config_file *file = NULL;
int error;
error = git_config_file__ondisk(&file, path);
if (error < GIT_SUCCESS)
return error;
error = git_config_add_file(cfg, file, priority);
if (error < GIT_SUCCESS) {
/*
* free manually; the file is not owned by the config
* instance yet and will not be freed on cleanup
*/
file->free(file);
return error;
}
return GIT_SUCCESS;
}
int git_config_open_ondisk(git_config **cfg, const char *path)
{
int error;
error = git_config_new(cfg);
if (error < GIT_SUCCESS)
return error;
error = git_config_add_file_ondisk(*cfg, path, 1);
if (error < GIT_SUCCESS)
git_config_free(*cfg);
return error;
}
int git_config_add_file(git_config *cfg, git_config_file *file, int priority)
{
file_internal *internal;
int error;
assert(cfg && file);
if ((error = file->open(file)) < GIT_SUCCESS)
return git__rethrow(error, "Failed to open config file");
internal = git__malloc(sizeof(file_internal));
if (internal == NULL)
return GIT_ENOMEM;
internal->file = file;
internal->priority = priority;
if (git_vector_insert(&cfg->files, internal) < 0) {
free(internal);
return GIT_ENOMEM;
}
git_vector_sort(&cfg->files);
internal->file->cfg = cfg;
return GIT_SUCCESS;
}
/*
* Loop over all the variables
*/
int git_config_foreach(git_config *cfg, int (*fn)(const char *, const char *, void *), void *data)
{
int ret = GIT_SUCCESS;
unsigned int i;
file_internal *internal;
git_config_file *file;
for(i = 0; i < cfg->files.length && ret == 0; ++i) {
internal = git_vector_get(&cfg->files, i);
file = internal->file;
ret = file->foreach(file, fn, data);
}
return ret;
}
int git_config_delete(git_config *cfg, const char *name)
{
return git_config_set_string(cfg, name, NULL);
}
/**************
* Setters
**************/
int git_config_set_long(git_config *cfg, const char *name, long long value)
{
char str_value[32]; /* All numbers should fit in here */
p_snprintf(str_value, sizeof(str_value), "%" PRIdMAX, value);
return git_config_set_string(cfg, name, str_value);
}
int git_config_set_int(git_config *cfg, const char *name, int value)
{
return git_config_set_long(cfg, name, (long long)value);
}
int git_config_set_bool(git_config *cfg, const char *name, int value)
{
return git_config_set_string(cfg, name, value ? "true" : "false");
}
int git_config_set_string(git_config *cfg, const char *name, const char *value)
{
file_internal *internal;
git_config_file *file;
if (cfg->files.length == 0)
return git__throw(GIT_EINVALIDARGS, "Cannot set variable value; no files open in the `git_config` instance");
internal = git_vector_get(&cfg->files, 0);
file = internal->file;
return file->set(file, name, value);
}
/***********
* Getters
***********/
int git_config_get_long(git_config *cfg, const char *name, long long *out)
{
const char *value, *num_end;
int ret;
long long num;
ret = git_config_get_string(cfg, name, &value);
if (ret < GIT_SUCCESS)
return git__rethrow(ret, "Failed to retrieve value for '%s'", name);
ret = git__strtol64(&num, value, &num_end, 0);
if (ret < GIT_SUCCESS)
return git__rethrow(ret, "Failed to convert value for '%s'", name);
switch (*num_end) {
case '\0':
break;
case 'k':
case 'K':
num *= 1024;
break;
case 'm':
case 'M':
num *= 1024 * 1024;
break;
case 'g':
case 'G':
num *= 1024 * 1024 * 1024;
break;
default:
return git__throw(GIT_EINVALIDTYPE, "Failed to get value for '%s'. Value is of invalid type", name);
}
*out = num;
return GIT_SUCCESS;
}
int git_config_get_int(git_config *cfg, const char *name, int *out)
{
long long tmp_long;
int tmp_int, ret;
ret = git_config_get_long(cfg, name, &tmp_long);
if (ret < GIT_SUCCESS)
return git__rethrow(ret, "Failed to convert value for '%s'", name);
tmp_int = tmp_long & 0xFFFFFFFF;
if (tmp_int != tmp_long)
return git__throw(GIT_EOVERFLOW, "Value for '%s' is too large", name);
*out = tmp_int;
return ret;
}
int git_config_get_bool(git_config *cfg, const char *name, int *out)
{
const char *value;
int error = GIT_SUCCESS;
error = git_config_get_string(cfg, name, &value);
if (error < GIT_SUCCESS)
return git__rethrow(error, "Failed to get value for %s", name);
/* A missing value means true */
if (value == NULL) {
*out = 1;
return GIT_SUCCESS;
}
if (!strcasecmp(value, "true") ||
!strcasecmp(value, "yes") ||
!strcasecmp(value, "on")) {
*out = 1;
return GIT_SUCCESS;
}
if (!strcasecmp(value, "false") ||
!strcasecmp(value, "no") ||
!strcasecmp(value, "off")) {
*out = 0;
return GIT_SUCCESS;
}
/* Try to parse it as an integer */
error = git_config_get_int(cfg, name, out);
if (error == GIT_SUCCESS)
*out = !!(*out);
if (error < GIT_SUCCESS)
return git__rethrow(error, "Failed to get value for %s", name);
return error;
}
int git_config_get_string(git_config *cfg, const char *name, const char **out)
{
file_internal *internal;
git_config_file *file;
int error = GIT_ENOTFOUND;
unsigned int i;
if (cfg->files.length == 0)
return git__throw(GIT_EINVALIDARGS, "Cannot get variable value; no files open in the `git_config` instance");
for (i = 0; i < cfg->files.length; ++i) {
internal = git_vector_get(&cfg->files, i);
file = internal->file;
if ((error = file->get(file, name, out)) == GIT_SUCCESS)
return GIT_SUCCESS;
}
return git__throw(error, "Config value '%s' not found", name);
}
int git_config_find_global(char *global_config_path)
{
const char *home;
home = getenv("HOME");
#ifdef GIT_WIN32
if (home == NULL)
home = getenv("USERPROFILE");
#endif
if (home == NULL)
return git__throw(GIT_EOSERR, "Failed to open global config file. Cannot locate the user's home directory");
git_path_join(global_config_path, home, GIT_CONFIG_FILENAME);
if (git_futils_exists(global_config_path) < GIT_SUCCESS)
return git__throw(GIT_EOSERR, "Failed to open global config file. The file does not exist");
return GIT_SUCCESS;
}
#if GIT_WIN32
static int win32_find_system(char *system_config_path)
{
const wchar_t *query = L"%PROGRAMFILES%\\Git\\etc\\gitconfig";
wchar_t *apphome_utf16;
char *apphome_utf8;
DWORD size, ret;
size = ExpandEnvironmentStringsW(query, NULL, 0);
/* The function gave us the full size of the buffer in chars, including NUL */
apphome_utf16 = git__malloc(size * sizeof(wchar_t));
if (apphome_utf16 == NULL)
return GIT_ENOMEM;
ret = ExpandEnvironmentStringsW(query, apphome_utf16, size);
if (ret == 0 || ret >= size)
return git__throw(GIT_ERROR, "Failed to expand environment strings");
if (_waccess(apphome_utf16, F_OK) < 0) {
free(apphome_utf16);
return GIT_ENOTFOUND;
}
apphome_utf8 = conv_utf16_to_utf8(apphome_utf16);
free(apphome_utf16);
if (strlen(apphome_utf8) >= GIT_PATH_MAX) {
free(apphome_utf8);
return git__throw(GIT_ESHORTBUFFER, "Path is too long");
}
strcpy(system_config_path, apphome_utf8);
free(apphome_utf8);
return GIT_SUCCESS;
}
#endif
int git_config_find_system(char *system_config_path)
{
const char *etc = "/etc/gitconfig";
if (git_futils_exists(etc) == GIT_SUCCESS) {
memcpy(system_config_path, etc, strlen(etc) + 1);
return GIT_SUCCESS;
}
#if GIT_WIN32
return win32_find_system(system_config_path);
#else
return GIT_ENOTFOUND;
#endif
}
int git_config_open_global(git_config **out)
{
int error;
char global_path[GIT_PATH_MAX];
if ((error = git_config_find_global(global_path)) < GIT_SUCCESS)
return error;
return git_config_open_ondisk(out, global_path);
}
