FreeRDP/winpr/libwinpr/utils/ini.c

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/**
* WinPR: Windows Portable Runtime
* .ini config file
*
* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <winpr/wtypes.h>
#include <winpr/crt.h>
#include <winpr/file.h>
#include <winpr/ini.h>
struct _wIniFileKey
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{
char* name;
char* value;
};
typedef struct _wIniFileKey wIniFileKey;
struct _wIniFileSection
{
char* name;
size_t nKeys;
size_t cKeys;
wIniFileKey** keys;
};
typedef struct _wIniFileSection wIniFileSection;
struct _wIniFile
{
FILE* fp;
char* line;
char* nextLine;
size_t lineLength;
char* tokctx;
char* buffer;
char* filename;
BOOL readOnly;
size_t nSections;
size_t cSections;
wIniFileSection** sections;
};
static BOOL IniFile_Load_NextLine(wIniFile* ini, char* str)
{
size_t length = 0;
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ini->nextLine = strtok_s(str, "\n", &ini->tokctx);
if (ini->nextLine)
length = strlen(ini->nextLine);
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if (length > 0)
{
if (ini->nextLine[length - 1] == '\r')
{
ini->nextLine[length - 1] = '\0';
length--;
}
if (length < 1)
ini->nextLine = NULL;
}
return (ini->nextLine) ? TRUE : FALSE;
}
static BOOL IniFile_Load_String(wIniFile* ini, const char* iniString)
{
size_t fileSize;
if (!ini || !iniString)
return FALSE;
ini->line = NULL;
ini->nextLine = NULL;
ini->buffer = NULL;
fileSize = strlen(iniString);
if (fileSize < 1)
return FALSE;
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ini->buffer = (char*)malloc(fileSize + 2);
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if (!ini->buffer)
return FALSE;
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CopyMemory(ini->buffer, iniString, fileSize);
ini->buffer[fileSize] = '\n';
ini->buffer[fileSize + 1] = '\0';
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IniFile_Load_NextLine(ini, ini->buffer);
return TRUE;
}
static BOOL IniFile_Open_File(wIniFile* ini, const char* filename)
{
if (!ini || !filename)
return FALSE;
if (ini->readOnly)
ini->fp = winpr_fopen(filename, "rb");
else
ini->fp = winpr_fopen(filename, "w+b");
if (!ini->fp)
return FALSE;
return TRUE;
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}
static BOOL IniFile_Load_File(wIniFile* ini, const char* filename)
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{
INT64 fileSize;
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if (!IniFile_Open_File(ini, filename))
return FALSE;
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if (_fseeki64(ini->fp, 0, SEEK_END) < 0)
goto out_file;
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fileSize = _ftelli64(ini->fp);
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if (fileSize < 0)
goto out_file;
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if (_fseeki64(ini->fp, 0, SEEK_SET) < 0)
goto out_file;
ini->line = NULL;
ini->nextLine = NULL;
ini->buffer = NULL;
if (fileSize < 1)
goto out_file;
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ini->buffer = (char*)malloc((size_t)fileSize + 2);
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if (!ini->buffer)
goto out_file;
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if (fread(ini->buffer, (size_t)fileSize, 1, ini->fp) != 1)
goto out_buffer;
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fclose(ini->fp);
ini->fp = NULL;
ini->buffer[fileSize] = '\n';
ini->buffer[fileSize + 1] = '\0';
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IniFile_Load_NextLine(ini, ini->buffer);
return TRUE;
out_buffer:
free(ini->buffer);
ini->buffer = NULL;
out_file:
fclose(ini->fp);
ini->fp = NULL;
return FALSE;
}
static void IniFile_Load_Finish(wIniFile* ini)
{
if (!ini)
return;
if (ini->buffer)
{
free(ini->buffer);
ini->buffer = NULL;
}
}
static BOOL IniFile_Load_HasNextLine(wIniFile* ini)
{
if (!ini)
return FALSE;
return (ini->nextLine) ? TRUE : FALSE;
}
static char* IniFile_Load_GetNextLine(wIniFile* ini)
{
if (!ini)
return NULL;
ini->line = ini->nextLine;
ini->lineLength = strlen(ini->line);
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IniFile_Load_NextLine(ini, NULL);
return ini->line;
}
static void IniFile_Key_Free(wIniFileKey* key)
{
if (!key)
return;
free(key->name);
free(key->value);
free(key);
}
static wIniFileKey* IniFile_Key_New(const char* name, const char* value)
{
wIniFileKey* key;
if (!name || !value)
return NULL;
key = malloc(sizeof(wIniFileKey));
if (key)
{
key->name = _strdup(name);
key->value = _strdup(value);
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if (!key->name || !key->value)
{
IniFile_Key_Free(key);
return NULL;
}
}
return key;
}
static wIniFileSection* IniFile_Section_New(const char* name)
{
wIniFileSection* section;
if (!name)
return NULL;
section = malloc(sizeof(wIniFileSection));
if (!section)
return NULL;
section->name = _strdup(name);
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if (!section->name)
{
free(section);
return NULL;
}
section->nKeys = 0;
section->cKeys = 64;
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section->keys = (wIniFileKey**)calloc(section->cKeys, sizeof(wIniFileKey*));
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if (!section->keys)
{
free(section->name);
free(section);
return NULL;
}
return section;
}
static void IniFile_Section_Free(wIniFileSection* section)
{
size_t index;
if (!section)
return;
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free(section->name);
for (index = 0; index < section->nKeys; index++)
{
IniFile_Key_Free(section->keys[index]);
}
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free(section->keys);
free(section);
}
static wIniFileSection* IniFile_GetSection(wIniFile* ini, const char* name)
{
size_t index;
wIniFileSection* section = NULL;
if (!ini || !name)
return NULL;
for (index = 0; index < ini->nSections; index++)
{
if (_stricmp(name, ini->sections[index]->name) == 0)
{
section = ini->sections[index];
break;
}
}
return section;
}
static wIniFileSection* IniFile_AddSection(wIniFile* ini, const char* name)
{
wIniFileSection* section;
if (!ini || !name)
return NULL;
section = IniFile_GetSection(ini, name);
if (!section)
{
if ((ini->nSections + 1) >= (ini->cSections))
{
size_t new_size;
wIniFileSection** new_sect;
new_size = ini->cSections * 2;
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new_sect =
(wIniFileSection**)realloc(ini->sections, sizeof(wIniFileSection*) * new_size);
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if (!new_sect)
return NULL;
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ini->cSections = new_size;
ini->sections = new_sect;
}
section = IniFile_Section_New(name);
ini->sections[ini->nSections] = section;
ini->nSections++;
}
return section;
}
static wIniFileKey* IniFile_GetKey(wIniFile* ini, wIniFileSection* section, const char* name)
{
size_t index;
wIniFileKey* key = NULL;
if (!ini || !section || !name)
return NULL;
for (index = 0; index < section->nKeys; index++)
{
if (_stricmp(name, section->keys[index]->name) == 0)
{
key = section->keys[index];
break;
}
}
return key;
}
static wIniFileKey* IniFile_AddKey(wIniFile* ini, wIniFileSection* section, const char* name,
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const char* value)
{
wIniFileKey* key;
if (!section || !name || !value)
return NULL;
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key = IniFile_GetKey(ini, section, name);
if (!key)
{
if ((section->nKeys + 1) >= (section->cKeys))
{
size_t new_size;
wIniFileKey** new_key;
new_size = section->cKeys * 2;
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new_key = (wIniFileKey**)realloc(section->keys, sizeof(wIniFileKey*) * new_size);
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if (!new_key)
return NULL;
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section->cKeys = new_size;
section->keys = new_key;
}
key = IniFile_Key_New(name, value);
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if (!key)
return NULL;
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section->keys[section->nKeys] = key;
section->nKeys++;
}
else
{
free(key->value);
key->value = _strdup(value);
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if (!key->value)
return NULL;
}
return key;
}
static int IniFile_Load(wIniFile* ini)
{
char* line;
char* name;
char* value;
char* separator;
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char *beg, *end;
wIniFileSection* section = NULL;
if (!ini)
return -1;
while (IniFile_Load_HasNextLine(ini))
{
line = IniFile_Load_GetNextLine(ini);
if (line[0] == ';')
continue;
if (line[0] == '[')
{
beg = &line[1];
end = strchr(line, ']');
if (!end)
return -1;
*end = '\0';
IniFile_AddSection(ini, beg);
section = ini->sections[ini->nSections - 1];
}
else
{
separator = strchr(line, '=');
if (separator == NULL)
return -1;
end = separator;
while ((&end[-1] > line) && ((end[-1] == ' ') || (end[-1] == '\t')))
end--;
*end = '\0';
name = line;
beg = separator + 1;
while (*beg && ((*beg == ' ') || (*beg == '\t')))
beg++;
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if (*beg == '"')
beg++;
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end = &line[ini->lineLength];
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while ((end > beg) && ((end[-1] == ' ') || (end[-1] == '\t')))
end--;
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if (end[-1] == '"')
end[-1] = '\0';
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value = beg;
if (!IniFile_AddKey(ini, section, name, value))
return -1;
}
}
IniFile_Load_Finish(ini);
return 1;
}
int IniFile_ReadBuffer(wIniFile* ini, const char* buffer)
{
BOOL status;
if (!ini || !buffer)
return -1;
ini->readOnly = TRUE;
ini->filename = NULL;
status = IniFile_Load_String(ini, buffer);
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if (!status)
return -1;
return IniFile_Load(ini);
}
int IniFile_ReadFile(wIniFile* ini, const char* filename)
{
ini->readOnly = TRUE;
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free(ini->filename);
ini->filename = _strdup(filename);
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if (!ini->filename)
return -1;
if (!IniFile_Load_File(ini, filename))
return -1;
return IniFile_Load(ini);
}
char** IniFile_GetSectionNames(wIniFile* ini, int* count)
{
char* p;
size_t index;
size_t length;
size_t nameLength;
char** sectionNames;
wIniFileSection* section = NULL;
if (!ini || !count)
return NULL;
if (ini->nSections > INT_MAX)
return NULL;
length = (sizeof(char*) * ini->nSections) + sizeof(char);
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for (index = 0; index < ini->nSections; index++)
{
section = ini->sections[index];
nameLength = strlen(section->name);
length += (nameLength + 1);
}
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sectionNames = (char**)malloc(length);
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if (!sectionNames)
return NULL;
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p = (char*)&((BYTE*)sectionNames)[sizeof(char*) * ini->nSections];
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for (index = 0; index < ini->nSections; index++)
{
sectionNames[index] = p;
section = ini->sections[index];
nameLength = strlen(section->name);
CopyMemory(p, section->name, nameLength + 1);
p += (nameLength + 1);
}
*p = '\0';
*count = (int)ini->nSections;
return sectionNames;
}
char** IniFile_GetSectionKeyNames(wIniFile* ini, const char* section, int* count)
{
char* p;
size_t index;
size_t length;
size_t nameLength;
char** keyNames;
wIniFileKey* pKey = NULL;
wIniFileSection* pSection = NULL;
if (!ini || !section || !count)
return NULL;
pSection = IniFile_GetSection(ini, section);
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if (!pSection)
return NULL;
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if (pSection->nKeys > INT_MAX)
return NULL;
length = (sizeof(char*) * pSection->nKeys) + sizeof(char);
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for (index = 0; index < pSection->nKeys; index++)
{
pKey = pSection->keys[index];
nameLength = strlen(pKey->name);
length += (nameLength + 1);
}
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keyNames = (char**)malloc(length);
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if (!keyNames)
return NULL;
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p = (char*)&((BYTE*)keyNames)[sizeof(char*) * pSection->nKeys];
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for (index = 0; index < pSection->nKeys; index++)
{
keyNames[index] = p;
pKey = pSection->keys[index];
nameLength = strlen(pKey->name);
CopyMemory(p, pKey->name, nameLength + 1);
p += (nameLength + 1);
}
*p = '\0';
*count = (int)pSection->nKeys;
return keyNames;
}
const char* IniFile_GetKeyValueString(wIniFile* ini, const char* section, const char* key)
{
const char* value = NULL;
wIniFileKey* pKey = NULL;
wIniFileSection* pSection = NULL;
pSection = IniFile_GetSection(ini, section);
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if (!pSection)
return NULL;
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pKey = IniFile_GetKey(ini, pSection, key);
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if (!pKey)
return NULL;
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value = (const char*)pKey->value;
return value;
}
int IniFile_GetKeyValueInt(wIniFile* ini, const char* section, const char* key)
{
int err;
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long value = 0;
wIniFileKey* pKey = NULL;
wIniFileSection* pSection = NULL;
pSection = IniFile_GetSection(ini, section);
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if (!pSection)
return 0;
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pKey = IniFile_GetKey(ini, pSection, key);
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if (!pKey)
return 0;
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err = errno;
errno = 0;
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value = strtol(pKey->value, NULL, 0);
if ((value < INT_MIN) || (value > INT_MAX) || (errno != 0))
{
errno = err;
return 0;
}
return (int)value;
}
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int IniFile_SetKeyValueString(wIniFile* ini, const char* section, const char* key,
const char* value)
{
wIniFileKey* pKey = NULL;
wIniFileSection* pSection = NULL;
pSection = IniFile_GetSection(ini, section);
if (!pSection)
pSection = IniFile_AddSection(ini, section);
if (!pSection)
return -1;
pKey = IniFile_AddKey(ini, pSection, key, value);
if (!pKey)
return -1;
return 1;
}
int IniFile_SetKeyValueInt(wIniFile* ini, const char* section, const char* key, int value)
{
char strVal[128];
wIniFileKey* pKey = NULL;
wIniFileSection* pSection = NULL;
sprintf_s(strVal, sizeof(strVal), "%d", value);
pSection = IniFile_GetSection(ini, section);
if (!pSection)
pSection = IniFile_AddSection(ini, section);
if (!pSection)
return -1;
pKey = IniFile_AddKey(ini, pSection, key, strVal);
if (!pKey)
return -1;
return 1;
}
char* IniFile_WriteBuffer(wIniFile* ini)
{
size_t i, j;
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size_t offset;
size_t size;
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char* buffer;
wIniFileKey* key;
wIniFileSection* section;
size = 0;
if (!ini)
return NULL;
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for (i = 0; i < ini->nSections; i++)
{
section = ini->sections[i];
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size += (strlen(section->name) + 3);
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for (j = 0; j < section->nKeys; j++)
{
key = section->keys[j];
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size += (strlen(key->name) + strlen(key->value) + 2);
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}
size += 1;
}
size += 1;
buffer = malloc(size + 1);
if (!buffer)
return NULL;
offset = 0;
for (i = 0; i < ini->nSections; i++)
{
section = ini->sections[i];
sprintf_s(&buffer[offset], size - offset, "[%s]\n", section->name);
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offset += (strlen(section->name) + 3);
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for (j = 0; j < section->nKeys; j++)
{
key = section->keys[j];
sprintf_s(&buffer[offset], size - offset, "%s=%s\n", key->name, key->value);
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offset += (strlen(key->name) + strlen(key->value) + 2);
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}
sprintf_s(&buffer[offset], size - offset, "\n");
offset += 1;
}
buffer[offset] = '\0';
return buffer;
}
int IniFile_WriteFile(wIniFile* ini, const char* filename)
{
size_t length;
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char* buffer;
int ret = 1;
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buffer = IniFile_WriteBuffer(ini);
if (!buffer)
return -1;
length = strlen(buffer);
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ini->readOnly = FALSE;
if (!filename)
filename = ini->filename;
if (!IniFile_Open_File(ini, filename))
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{
free(buffer);
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return -1;
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}
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if (fwrite((void*)buffer, length, 1, ini->fp) != 1)
ret = -1;
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fclose(ini->fp);
free(buffer);
return ret;
}
wIniFile* IniFile_New(void)
{
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wIniFile* ini = (wIniFile*)calloc(1, sizeof(wIniFile));
if (ini)
{
ini->nSections = 0;
ini->cSections = 64;
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ini->sections = (wIniFileSection**)calloc(ini->cSections, sizeof(wIniFileSection*));
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if (!ini->sections)
{
free(ini);
return NULL;
}
}
return ini;
}
void IniFile_Free(wIniFile* ini)
{
size_t index;
if (!ini)
return;
free(ini->filename);
for (index = 0; index < ini->nSections; index++)
IniFile_Section_Free(ini->sections[index]);
free(ini->sections);
free(ini->buffer);
free(ini);
}