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CMake/Utilities/cmxmlrpc/xmlrpc_data.c

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/* Copyright information is at end of file */
#include "xmlrpc_config.h"
#include <stddef.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include "bool.h"
#include "xmlrpc.h"
#include "xmlrpc_int.h"
/* Borrowed from Python 1.5.2.
** MPW pushes 'extended' for float and double types with varargs */
#ifdef MPW
typedef extended va_double;
#else
typedef double va_double;
#endif
/* Borrowed from Python 1.5.2.
** Python copies its va_list objects before using them in certain
** tricky fashions. We don't why Python does this, but since we're
** abusing our va_list objects in a similar fashion, we'll copy them
** too. */
#if VA_LIST_IS_ARRAY
#define VA_LIST_COPY(dest,src) memcpy((dest), (src), sizeof(va_list))
#else
#define VA_LIST_COPY(dest,src) ((dest) = (src))
#endif
static void
destroyValue(xmlrpc_value * const valueP) {
/* First, we need to destroy this value's contents, if any. */
switch (valueP->_type) {
case XMLRPC_TYPE_INT:
case XMLRPC_TYPE_BOOL:
case XMLRPC_TYPE_DOUBLE:
break;
case XMLRPC_TYPE_ARRAY:
xmlrpc_destroyArrayContents(valueP);
break;
case XMLRPC_TYPE_STRING:
#ifdef HAVE_UNICODE_WCHAR
if (valueP->_wcs_block)
xmlrpc_mem_block_free(valueP->_wcs_block);
#endif /* HAVE_UNICODE_WCHAR */
/* Fall through. */
case XMLRPC_TYPE_DATETIME:
case XMLRPC_TYPE_BASE64:
xmlrpc_mem_block_clean(&valueP->_block);
break;
case XMLRPC_TYPE_STRUCT:
xmlrpc_destroyStruct(valueP);
break;
case XMLRPC_TYPE_C_PTR:
break;
case XMLRPC_TYPE_DEAD:
XMLRPC_ASSERT(FALSE); /* Can't happen, per entry conditions */
default:
XMLRPC_ASSERT(FALSE); /* There are no other possible values */
}
/* Next, we mark this value as invalid, to help catch refcount
** errors. */
valueP->_type = XMLRPC_TYPE_DEAD;
/* Finally, we destroy the value itself. */
free(valueP);
}
/*=========================================================================
** Reference Counting
**=========================================================================
** Some simple reference-counting code. The xmlrpc_DECREF routine is in
** charge of destroying values when their reference count equals zero.
*/
void
xmlrpc_INCREF (xmlrpc_value * const valueP) {
XMLRPC_ASSERT_VALUE_OK(valueP);
XMLRPC_ASSERT(valueP->_refcount > 0);
valueP->_refcount++;
}
void
xmlrpc_DECREF (xmlrpc_value * const valueP) {
XMLRPC_ASSERT_VALUE_OK(valueP);
XMLRPC_ASSERT(valueP->_refcount > 0);
XMLRPC_ASSERT(valueP->_type != XMLRPC_TYPE_DEAD);
valueP->_refcount--;
/* If we have no more refs, we need to deallocate this value. */
if (valueP->_refcount == 0)
destroyValue(valueP);
}
/*=========================================================================
Utiltiies
=========================================================================*/
static const char *
typeName(xmlrpc_type const type) {
switch(type) {
case XMLRPC_TYPE_INT: return "INT";
case XMLRPC_TYPE_BOOL: return "BOOL";
case XMLRPC_TYPE_DOUBLE: return "DOUBLE";
case XMLRPC_TYPE_DATETIME: return "DATETIME";
case XMLRPC_TYPE_STRING: return "STRING";
case XMLRPC_TYPE_BASE64: return "BASE64";
case XMLRPC_TYPE_ARRAY: return "ARRAY";
case XMLRPC_TYPE_STRUCT: return "STRUCT";
case XMLRPC_TYPE_C_PTR: return "C_PTR";
case XMLRPC_TYPE_DEAD: return "DEAD";
default: return "???";
}
}
static void
verifyNoNulls(xmlrpc_env * const envP,
const char * const contents,
unsigned int const len) {
/*----------------------------------------------------------------------------
Verify that the character array 'contents', which is 'len' bytes long,
does not contain any NUL characters, which means it can be made into
a passable ASCIIZ string just by adding a terminating NUL.
Fail if the array contains a NUL.
-----------------------------------------------------------------------------*/
unsigned int i;
for (i = 0; i < len && !envP->fault_occurred; i++)
if (contents[i] == '\0')
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_TYPE_ERROR,
"String must not contain NUL characters");
}
static void
verifyNoNullsW(xmlrpc_env * const envP,
const wchar_t * const contents,
unsigned int const len) {
/*----------------------------------------------------------------------------
Same as verifyNoNulls(), but for wide characters.
-----------------------------------------------------------------------------*/
unsigned int i;
for (i = 0; i < len && !envP->fault_occurred; i++)
if (contents[i] == '\0')
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_TYPE_ERROR,
"String must not contain NUL characters");
}
static void
validateType(xmlrpc_env * const envP,
const xmlrpc_value * const valueP,
xmlrpc_type const expectedType) {
if (valueP->_type != expectedType) {
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_TYPE_ERROR, "Value of type %s supplied where "
"type %s was expected.",
typeName(valueP->_type), typeName(expectedType));
}
}
/*=========================================================================
Extracting XML-RPC value
===========================================================================
These routines extract XML-RPC values into ordinary C data types.
For array and struct values, see the separates files xmlrpc_array.c
and xmlrpc_struct.c.
=========================================================================*/
void
xmlrpc_read_int(xmlrpc_env * const envP,
const xmlrpc_value * const valueP,
xmlrpc_int32 * const intValueP) {
validateType(envP, valueP, XMLRPC_TYPE_INT);
if (!envP->fault_occurred)
*intValueP = valueP->_value.i;
}
void
xmlrpc_read_double(xmlrpc_env * const envP,
const xmlrpc_value * const valueP,
xmlrpc_double * const doubleValueP) {
validateType(envP, valueP, XMLRPC_TYPE_DOUBLE);
if (!envP->fault_occurred)
*doubleValueP = valueP->_value.d;
}
void
xmlrpc_read_bool(xmlrpc_env * const envP,
const xmlrpc_value * const valueP,
xmlrpc_bool * const boolValueP) {
validateType(envP, valueP, XMLRPC_TYPE_BOOL);
if (!envP->fault_occurred)
*boolValueP = valueP->_value.b;
}
void
xmlrpc_read_string(xmlrpc_env * const envP,
const xmlrpc_value * const valueP,
const char ** const stringValueP) {
/*----------------------------------------------------------------------------
Read the value of an XML-RPC string an ASCIIZ string.
Fail if the string contains null characters (which means it wasn't
really a string, but XML-RPC doesn't seem to understand what a string
is, and such values are possible).
-----------------------------------------------------------------------------*/
validateType(envP, valueP, XMLRPC_TYPE_STRING);
if (!envP->fault_occurred) {
unsigned int const size =
XMLRPC_MEMBLOCK_SIZE(char, &valueP->_block);
const char * const contents =
XMLRPC_MEMBLOCK_CONTENTS(char, &valueP->_block);
verifyNoNulls(envP, contents, size);
if (!envP->fault_occurred) {
char * stringValue;
stringValue = malloc(size+1);
if (stringValue == NULL)
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_INTERNAL_ERROR, "Unable to allocate space "
"for %u-character string", size);
else {
memcpy(stringValue,
XMLRPC_MEMBLOCK_CONTENTS(char, &valueP->_block), size);
stringValue[size] = '\0';
*stringValueP = stringValue;
}
}
}
}
void
xmlrpc_read_string_lp(xmlrpc_env * const envP,
const xmlrpc_value * const valueP,
unsigned int * const lengthP,
const char ** const stringValueP) {
validateType(envP, valueP, XMLRPC_TYPE_STRING);
if (!envP->fault_occurred) {
unsigned int const size =
XMLRPC_MEMBLOCK_SIZE(char, &valueP->_block);
const char * const contents =
XMLRPC_MEMBLOCK_CONTENTS(char, &valueP->_block);
char * stringValue;
stringValue = malloc(size);
if (stringValue == NULL)
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_INTERNAL_ERROR, "Unable to allocate %u bytes "
"for string.", size);
else {
memcpy(stringValue, contents, size);
*stringValueP = stringValue;
*lengthP = size;
}
}
}
/*=========================================================================
** Building XML-RPC values.
**=========================================================================
** Build new XML-RPC values from a format string. This code is heavily
** inspired by Py_BuildValue from Python 1.5.2. In particular, our
** particular abuse of the va_list data type is copied from the equivalent
** Python code in modsupport.c. Since Python is portable, our code should
** (in theory) also be portable.
*/
xmlrpc_type xmlrpc_value_type (xmlrpc_value* value)
{
XMLRPC_ASSERT_VALUE_OK(value);
return value->_type;
}
static void
createXmlrpcValue(xmlrpc_env * const envP,
xmlrpc_value ** const valPP) {
/*----------------------------------------------------------------------------
Create a blank xmlrpc_value to be filled in.
Set the reference count to 1.
-----------------------------------------------------------------------------*/
xmlrpc_value * valP;
valP = (xmlrpc_value*) malloc(sizeof(xmlrpc_value));
if (!valP)
xmlrpc_env_set_fault(envP, XMLRPC_INTERNAL_ERROR,
"Could not allocate memory for xmlrpc_value");
else
valP->_refcount = 1;
*valPP = valP;
}
static void
mkInt(xmlrpc_env * const envP,
xmlrpc_int32 const value,
xmlrpc_value ** const valPP) {
xmlrpc_value * valP;
createXmlrpcValue(envP, &valP);
if (!envP->fault_occurred) {
valP->_type = XMLRPC_TYPE_INT;
valP->_value.i = value;
}
*valPP = valP;
}
static void
mkBool(xmlrpc_env * const envP,
xmlrpc_bool const value,
xmlrpc_value ** const valPP) {
xmlrpc_value * valP;
createXmlrpcValue(envP, &valP);
if (!envP->fault_occurred) {
valP->_type = XMLRPC_TYPE_BOOL;
valP->_value.b = value;
}
*valPP = valP;
}
static void
mkDouble(xmlrpc_env * const envP,
double const value,
xmlrpc_value ** const valPP) {
xmlrpc_value * valP;
createXmlrpcValue(envP, &valP);
if (!envP->fault_occurred) {
valP->_type = XMLRPC_TYPE_DOUBLE;
valP->_value.d = value;
}
*valPP = valP;
}
#ifdef HAVE_UNICODE_WCHAR
#define MAKE_WCS_BLOCK_NULL(val) ((val)->_wcs_block = NULL)
#else
#define MAKE_WCS_BLOCK_NULL(val) while (0) do {};
#endif
static void
mkString(xmlrpc_env * const envP,
const char * const value,
unsigned int const length,
xmlrpc_value ** const valPP) {
xmlrpc_value * valP;
createXmlrpcValue(envP, &valP);
if (!envP->fault_occurred) {
valP->_type = XMLRPC_TYPE_STRING;
MAKE_WCS_BLOCK_NULL(valP);
XMLRPC_MEMBLOCK_INIT(char, envP, &valP->_block, length + 1);
if (!envP->fault_occurred) {
char * const contents =
XMLRPC_MEMBLOCK_CONTENTS(char, &valP->_block);
memcpy(contents, value, length);
contents[length] = '\0';
}
if (envP->fault_occurred)
free(valP);
}
*valPP = valP;
}
static void
getString(xmlrpc_env * const envP,
const char ** const formatP,
va_list * const args,
xmlrpc_value ** const valPP) {
const char * str;
unsigned int len;
str = (const char*) va_arg(*args, char*);
if (**formatP == '#') {
(*formatP)++;
len = (size_t) va_arg(*args, size_t);
} else
len = strlen(str);
mkString(envP, str, len, valPP);
}
#ifdef HAVE_UNICODE_WCHAR
static void
mkWideString(xmlrpc_env * const envP,
wchar_t * const wcs,
size_t const wcs_len,
xmlrpc_value ** const valPP) {
xmlrpc_value * valP;
char *contents;
wchar_t *wcs_contents;
int block_is_inited;
xmlrpc_mem_block *utf8_block;
char *utf8_contents;
size_t utf8_len;
/* Error-handling preconditions. */
valP = NULL;
utf8_block = NULL;
block_is_inited = 0;
/* Initialize our XML-RPC value. */
valP = (xmlrpc_value*) malloc(sizeof(xmlrpc_value));
XMLRPC_FAIL_IF_NULL(valP, envP, XMLRPC_INTERNAL_ERROR,
"Could not allocate memory for wide string");
valP->_refcount = 1;
valP->_type = XMLRPC_TYPE_STRING;
/* More error-handling preconditions. */
valP->_wcs_block = NULL;
/* Build our wchar_t block first. */
valP->_wcs_block =
XMLRPC_TYPED_MEM_BLOCK_NEW(wchar_t, envP, wcs_len + 1);
XMLRPC_FAIL_IF_FAULT(envP);
wcs_contents =
XMLRPC_TYPED_MEM_BLOCK_CONTENTS(wchar_t, valP->_wcs_block);
memcpy(wcs_contents, wcs, wcs_len * sizeof(wchar_t));
wcs_contents[wcs_len] = '\0';
/* Convert the wcs block to UTF-8. */
utf8_block = xmlrpc_wcs_to_utf8(envP, wcs_contents, wcs_len + 1);
XMLRPC_FAIL_IF_FAULT(envP);
utf8_contents = XMLRPC_TYPED_MEM_BLOCK_CONTENTS(char, utf8_block);
utf8_len = XMLRPC_TYPED_MEM_BLOCK_SIZE(char, utf8_block);
/* XXX - We need an extra memcopy to initialize _block. */
XMLRPC_TYPED_MEM_BLOCK_INIT(char, envP, &valP->_block, utf8_len);
XMLRPC_FAIL_IF_FAULT(envP);
block_is_inited = 1;
contents = XMLRPC_TYPED_MEM_BLOCK_CONTENTS(char, &valP->_block);
memcpy(contents, utf8_contents, utf8_len);
cleanup:
if (utf8_block)
xmlrpc_mem_block_free(utf8_block);
if (envP->fault_occurred) {
if (valP) {
if (valP->_wcs_block)
xmlrpc_mem_block_free(valP->_wcs_block);
if (block_is_inited)
xmlrpc_mem_block_clean(&valP->_block);
free(valP);
}
}
*valPP = valP;
}
#endif /* HAVE_UNICODE_WCHAR */
static void
getWideString(xmlrpc_env * const envP,
const char ** const formatP,
va_list * const args,
xmlrpc_value ** const valPP) {
#ifdef HAVE_UNICODE_WCHAR
wchar_t *wcs;
size_t len;
wcs = (wchar_t*) va_arg(*args, wchar_t*);
if (**formatP == '#') {
(*formatP)++;
len = (size_t) va_arg(*args, size_t);
} else
len = wcslen(wcs);
mkWideString(envP, wcs, len, valPP);
#endif /* HAVE_UNICODE_WCHAR */
}
static void
mkDatetime(xmlrpc_env * const envP,
const char * const value,
xmlrpc_value ** const valPP) {
xmlrpc_value * valP;
createXmlrpcValue(envP, &valP);
if (!envP->fault_occurred) {
valP->_type = XMLRPC_TYPE_DATETIME;
XMLRPC_TYPED_MEM_BLOCK_INIT(
char, envP, &valP->_block, strlen(value) + 1);
if (!envP->fault_occurred) {
char * const contents =
XMLRPC_TYPED_MEM_BLOCK_CONTENTS(char, &valP->_block);
strcpy(contents, value);
}
if (envP->fault_occurred)
free(valP);
}
*valPP = valP;
}
static void
mkBase64(xmlrpc_env * const envP,
const unsigned char * const value,
size_t const length,
xmlrpc_value ** const valPP) {
xmlrpc_value * valP;
createXmlrpcValue(envP, &valP);
if (!envP->fault_occurred) {
valP->_type = XMLRPC_TYPE_BASE64;
xmlrpc_mem_block_init(envP, &valP->_block, length);
if (!envP->fault_occurred) {
char * const contents =
xmlrpc_mem_block_contents(&valP->_block);
memcpy(contents, value, length);
}
if (envP->fault_occurred)
free(valP);
}
*valPP = valP;
}
static void
getBase64(xmlrpc_env * const envP,
va_list * const args,
xmlrpc_value ** const valPP) {
unsigned char * value;
size_t length;
value = (unsigned char*) va_arg(*args, unsigned char*);
length = (size_t) va_arg(*args, size_t);
mkBase64(envP, value, length, valPP);
}
static void
mkCPtr(xmlrpc_env * const envP,
void * const value,
xmlrpc_value ** const valPP) {
xmlrpc_value * valP;
createXmlrpcValue(envP, &valP);
if (!envP->fault_occurred) {
valP->_type = XMLRPC_TYPE_C_PTR;
valP->_value.c_ptr = value;
}
*valPP = valP;
}
static void
mkArrayFromVal(xmlrpc_env * const envP,
xmlrpc_value * const value,
xmlrpc_value ** const valPP) {
if (xmlrpc_value_type(value) != XMLRPC_TYPE_ARRAY)
xmlrpc_env_set_fault(envP, XMLRPC_INTERNAL_ERROR,
"Array format ('A'), non-array xmlrpc_value");
else
xmlrpc_INCREF(value);
*valPP = value;
}
static void
mkStructFromVal(xmlrpc_env * const envP,
xmlrpc_value * const value,
xmlrpc_value ** const valPP) {
if (xmlrpc_value_type(value) != XMLRPC_TYPE_STRUCT)
xmlrpc_env_set_fault(envP, XMLRPC_INTERNAL_ERROR,
"Struct format ('S'), non-struct xmlrpc_value");
else
xmlrpc_INCREF(value);
*valPP = value;
}
static void
getValue(xmlrpc_env * const envP,
const char** const format,
va_list * const args,
xmlrpc_value ** const valPP);
static void
createXmlrpcArray(xmlrpc_env * const envP,
xmlrpc_value ** const arrayPP) {
/*----------------------------------------------------------------------------
Create an empty array xmlrpc_value.
-----------------------------------------------------------------------------*/
xmlrpc_value * arrayP;
createXmlrpcValue(envP, &arrayP);
if (!envP->fault_occurred) {
arrayP->_type = XMLRPC_TYPE_ARRAY;
XMLRPC_TYPED_MEM_BLOCK_INIT(xmlrpc_value*, envP, &arrayP->_block, 0);
if (envP->fault_occurred)
free(arrayP);
}
*arrayPP = arrayP;
}
static void
getArray(xmlrpc_env * const envP,
const char ** const formatP,
char const delimiter,
va_list * const args,
xmlrpc_value ** const arrayPP) {
xmlrpc_value * arrayP;
createXmlrpcArray(envP, &arrayP);
/* Add items to the array until we hit our delimiter. */
while (**formatP != delimiter && !envP->fault_occurred) {
xmlrpc_value * itemP;
if (**formatP == '\0')
xmlrpc_env_set_fault(
envP, XMLRPC_INTERNAL_ERROR,
"format string ended before closing ')'.");
else {
getValue(envP, formatP, args, &itemP);
if (!envP->fault_occurred) {
xmlrpc_array_append_item(envP, arrayP, itemP);
xmlrpc_DECREF(itemP);
}
}
}
if (envP->fault_occurred)
xmlrpc_DECREF(arrayP);
*arrayPP = arrayP;
}
static void
getStructMember(xmlrpc_env * const envP,
const char ** const formatP,
va_list * const args,
xmlrpc_value ** const keyPP,
xmlrpc_value ** const valuePP) {
/* Get the key */
getValue(envP, formatP, args, keyPP);
if (!envP->fault_occurred) {
if (**formatP != ':')
xmlrpc_env_set_fault(
envP, XMLRPC_INTERNAL_ERROR,
"format string does not have ':' after a "
"structure member key.");
else {
/* Skip over colon that separates key from value */
(*formatP)++;
/* Get the value */
getValue(envP, formatP, args, valuePP);
}
if (envP->fault_occurred)
xmlrpc_DECREF(*keyPP);
}
}
static void
getStruct(xmlrpc_env * const envP,
const char ** const formatP,
char const delimiter,
va_list * const args,
xmlrpc_value ** const structPP) {
xmlrpc_value * structP;
structP = xmlrpc_struct_new(envP);
if (!envP->fault_occurred) {
while (**formatP != delimiter && !envP->fault_occurred) {
xmlrpc_value * keyP;
xmlrpc_value * valueP;
getStructMember(envP, formatP, args, &keyP, &valueP);
if (!envP->fault_occurred) {
if (**formatP == ',')
(*formatP)++; /* Skip over the comma */
else if (**formatP == delimiter) {
/* End of the line */
} else
xmlrpc_env_set_fault(
envP, XMLRPC_INTERNAL_ERROR,
"format string does not have ',' or ')' after "
"a structure member");
if (!envP->fault_occurred)
/* Add the new member to the struct. */
xmlrpc_struct_set_value_v(envP, structP, keyP, valueP);
xmlrpc_DECREF(valueP);
xmlrpc_DECREF(keyP);
}
}
if (envP->fault_occurred)
xmlrpc_DECREF(structP);
}
*structPP = structP;
}
static void
getValue(xmlrpc_env * const envP,
const char** const formatP,
va_list * const args,
xmlrpc_value ** const valPP) {
/*----------------------------------------------------------------------------
Get the next value from the list. *formatP points to the specifier
for the next value in the format string (i.e. to the type code
character) and we move *formatP past the whole specifier for the
next value. We read the required arguments from 'args'. We return
the value as *valPP with a reference to it.
For example, if *formatP points to the "i" in the string "sis",
we read one argument from 'args' and return as *valP an integer whose
value is the argument we read. We advance *formatP to point to the
last 's' and advance 'args' to point to the argument that belongs to
that 's'.
-----------------------------------------------------------------------------*/
char const formatChar = *(*formatP)++;
switch (formatChar) {
case 'i':
mkInt(envP, (xmlrpc_int32) va_arg(*args, xmlrpc_int32), valPP);
break;
case 'b':
mkBool(envP, (xmlrpc_bool) va_arg(*args, xmlrpc_bool), valPP);
break;
case 'd':
mkDouble(envP, (double) va_arg(*args, va_double), valPP);
break;
case 's':
getString(envP, formatP, args, valPP);
break;
case 'w':
getWideString(envP, formatP, args, valPP);
break;
/* The code 't' is reserved for a better, time_t based
implementation of dateTime conversion.
*/
case '8':
mkDatetime(envP, (char*) va_arg(*args, char*), valPP);
break;
case '6':
getBase64(envP, args, valPP);
break;
case 'p':
/* We might someday want to use the code 'p!' to read in a
cleanup function for this pointer.
*/
mkCPtr(envP, (void*) va_arg(*args, void*), valPP);
break;
case 'A':
mkArrayFromVal(envP, (xmlrpc_value*) va_arg(*args, xmlrpc_value*),
valPP);
break;
case 'S':
mkStructFromVal(envP, (xmlrpc_value*) va_arg(*args, xmlrpc_value*),
valPP);
break;
case 'V':
*valPP = (xmlrpc_value*) va_arg(*args, xmlrpc_value*);
xmlrpc_INCREF(*valPP);
break;
case '(':
getArray(envP, formatP, ')', args, valPP);
if (!envP->fault_occurred) {
XMLRPC_ASSERT(**formatP == ')');
(*formatP)++; /* Skip over closing parenthesis */
}
break;
case '{':
getStruct(envP, formatP, '}', args, valPP);
if (!envP->fault_occurred) {
XMLRPC_ASSERT(**formatP == '}');
(*formatP)++; /* Skip over closing brace */
}
break;
default: {
const char * const badCharacter = xmlrpc_makePrintableChar(formatChar);
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_INTERNAL_ERROR,
"Unexpected character '%s' in format string", badCharacter);
xmlrpc_strfree(badCharacter);
}
}
}
void
xmlrpc_build_value_va(xmlrpc_env * const envP,
const char * const format,
va_list args,
xmlrpc_value ** const valPP,
const char ** const tailP) {
const char * formatCursor;
va_list args_copy;
XMLRPC_ASSERT_ENV_OK(envP);
XMLRPC_ASSERT(format != NULL);
if (strlen(format) == 0)
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_INTERNAL_ERROR, "Format string is empty.");
else {
formatCursor = &format[0];
VA_LIST_COPY(args_copy, args);
getValue(envP, &formatCursor, &args_copy, valPP);
if (!envP->fault_occurred)
XMLRPC_ASSERT_VALUE_OK(*valPP);
*tailP = formatCursor;
}
}
xmlrpc_value *
xmlrpc_build_value(xmlrpc_env * const envP,
const char * const format,
...) {
va_list args;
xmlrpc_value* retval;
const char * suffix;
va_start(args, format);
xmlrpc_build_value_va(envP, format, args, &retval, &suffix);
va_end(args);
if (!envP->fault_occurred) {
if (*suffix != '\0')
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_INTERNAL_ERROR, "Junk after the argument "
"specifier: '%s'. There must be exactly one arument.",
suffix);
if (envP->fault_occurred)
xmlrpc_DECREF(retval);
}
return retval;
}
/*=========================================================================
** Parsing XML-RPC values.
**=========================================================================
** Parse an XML-RPC value based on a format string. This code is heavily
** inspired by Py_BuildValue from Python 1.5.2.
*/
/* Prototype for recursive invocation: */
static void
parsevalue(xmlrpc_env * const env,
xmlrpc_value * const val,
const char ** const format,
va_list * args);
static void
parsearray(xmlrpc_env * const env,
const xmlrpc_value * const array,
const char ** const format,
char const delimiter,
va_list * args) {
int size, i;
xmlrpc_value *item;
/* Fetch the array size. */
size = xmlrpc_array_size(env, array);
XMLRPC_FAIL_IF_FAULT(env);
/* Loop over the items in the array. */
for (i = 0; i < size; i++) {
/* Bail out if the caller didn't care about the rest of the items. */
if (**format == '*')
break;
item = xmlrpc_array_get_item(env, array, i);
XMLRPC_FAIL_IF_FAULT(env);
XMLRPC_ASSERT(**format != '\0');
if (**format == delimiter)
XMLRPC_FAIL(env, XMLRPC_INDEX_ERROR, "Too many items in array");
parsevalue(env, item, format, args);
XMLRPC_FAIL_IF_FAULT(env);
}
if (**format == '*')
(*format)++;
if (**format != delimiter)
XMLRPC_FAIL(env, XMLRPC_INDEX_ERROR, "Not enough items in array");
cleanup:
return;
}
static void
parsestruct(xmlrpc_env * const env,
xmlrpc_value * const strct,
const char ** const format,
char const delimiter,
va_list * args) {
xmlrpc_value *key, *value;
char *keystr;
size_t keylen;
/* Set up error handling preconditions. */
key = NULL;
/* Build the members of our struct. */
while (**format != '*' && **format != delimiter && **format != '\0') {
/* Get our key, and skip over the ':' character. Notice the
** sudden call to getValue--we're going in the opposite direction. */
getValue(env, format, args, &key);
XMLRPC_FAIL_IF_FAULT(env);
XMLRPC_ASSERT(**format == ':');
(*format)++;
/* Look up the value for our key. */
xmlrpc_parse_value(env, key, "s#", &keystr, &keylen);
XMLRPC_FAIL_IF_FAULT(env);
value = xmlrpc_struct_get_value_n(env, strct, keystr, keylen);
XMLRPC_FAIL_IF_FAULT(env);
/* Get our value, and skip over the ',' character (if present). */
parsevalue(env, value, format, args);
XMLRPC_FAIL_IF_FAULT(env);
XMLRPC_ASSERT(**format == ',' || **format == delimiter);
if (**format == ',')
(*format)++;
/* Release our reference, and restore our invariant. */
xmlrpc_DECREF(key);
key = NULL;
}
if (**format == '*') {
(*format)++;
if (**format != delimiter && **format != '\0')
XMLRPC_FAIL(env, XMLRPC_INTERNAL_ERROR,
"* can appear only at the end "
"of a structure format specifier");
} else {
/* Here we're supposed to fail if he didn't extract all the
members. But we don't know how to determine whether he
specified all the members, so we always fail.
*/
XMLRPC_FAIL(env, XMLRPC_INTERNAL_ERROR, "You must specify '*' as the "
"last member of a structure in a format specifier "
"used for parsing an xmlrpc_value");
}
XMLRPC_ASSERT(**format == delimiter || **format == '\0');
cleanup:
if (key)
xmlrpc_DECREF(key);
}
static void
parsevalue(xmlrpc_env * const envP,
xmlrpc_value * const valueP,
const char ** const format,
va_list * args) {
char formatSpecChar;
formatSpecChar = *(*format)++;
switch (formatSpecChar) {
case 'i':
validateType(envP, valueP, XMLRPC_TYPE_INT);
if (!envP->fault_occurred) {
xmlrpc_int32 * const int32ptr =
(xmlrpc_int32*) va_arg(*args, xmlrpc_int32*);
*int32ptr = valueP->_value.i;
}
break;
case 'b':
validateType(envP, valueP, XMLRPC_TYPE_BOOL);
if (!envP->fault_occurred) {
xmlrpc_bool * const boolptr =
(xmlrpc_bool*) va_arg(*args, xmlrpc_bool*);
*boolptr = valueP->_value.b;
}
break;
case 'd':
validateType(envP, valueP, XMLRPC_TYPE_DOUBLE);
if (!envP->fault_occurred) {
double * const doubleptr = (double*) va_arg(*args, double*);
*doubleptr = valueP->_value.d;
}
break;
case 's':
validateType(envP, valueP, XMLRPC_TYPE_STRING);
if (!envP->fault_occurred) {
char * const contents =
XMLRPC_MEMBLOCK_CONTENTS(char, &valueP->_block);
size_t const len = XMLRPC_MEMBLOCK_SIZE(char, &valueP->_block) - 1;
char ** const strptr = (char**) va_arg(*args, char**);
if (**format == '#') {
size_t * const sizeptr = (size_t*) va_arg(*args, size_t**);
(*format)++;
*sizeptr = len;
} else
verifyNoNulls(envP, contents, len);
*strptr = contents;
}
break;
#ifdef HAVE_UNICODE_WCHAR
case 'w':
validateType(envP, valueP, XMLRPC_TYPE_STRING);
if (!envP->fault_occurred) {
if (!valueP->_wcs_block) {
/* Allocate a wchar_t string if we don't have one. */
char * const contents =
XMLRPC_MEMBLOCK_CONTENTS(char, &valueP->_block);
size_t const len =
XMLRPC_MEMBLOCK_SIZE(char, &valueP->_block) - 1;
valueP->_wcs_block =
xmlrpc_utf8_to_wcs(envP, contents, len + 1);
}
if (!envP->fault_occurred) {
wchar_t * const wcontents =
XMLRPC_MEMBLOCK_CONTENTS(wchar_t, valueP->_wcs_block);
size_t const len =
XMLRPC_MEMBLOCK_SIZE(wchar_t, valueP->_wcs_block) - 1;
wchar_t ** const wcsptr = (wchar_t**) va_arg(*args, wchar_t**);
if (**format == '#') {
size_t * const sizeptr = (size_t*) va_arg(*args, size_t**);
(*format)++;
*sizeptr = len;
} else
verifyNoNullsW(envP, wcontents, len);
*wcsptr = wcontents;
}
}
break;
#endif /* HAVE_UNICODE_WCHAR */
case '8':
/* The code 't' is reserved for a better, time_t based
** implementation of dateTime conversion. */
validateType(envP, valueP, XMLRPC_TYPE_DATETIME);
if (!envP->fault_occurred) {
char * const contents =
XMLRPC_MEMBLOCK_CONTENTS(char, &valueP->_block);
char ** const strptr = (char**) va_arg(*args, char**);
*strptr = contents;
}
break;
case '6':
validateType(envP, valueP, XMLRPC_TYPE_BASE64);
if (!envP->fault_occurred) {
unsigned char * const bin_data =
XMLRPC_MEMBLOCK_CONTENTS(unsigned char,
&valueP->_block);
size_t const len = XMLRPC_MEMBLOCK_SIZE(char, &valueP->_block);
unsigned char ** const binptr =
(unsigned char**) va_arg(*args, unsigned char**);
size_t * const sizeptr = (size_t*) va_arg(*args, size_t**);
*binptr = bin_data;
*sizeptr = len;
}
break;
case 'p':
validateType(envP, valueP, XMLRPC_TYPE_C_PTR);
if (!envP->fault_occurred) {
void ** const voidptrptr = (void**) va_arg(*args, void**);
*voidptrptr = valueP->_value.c_ptr;
}
break;
case 'V': {
xmlrpc_value ** const valptr =
(xmlrpc_value**) va_arg(*args, xmlrpc_value**);
*valptr = valueP;
}
break;
case 'A':
validateType(envP, valueP, XMLRPC_TYPE_ARRAY);
if (!envP->fault_occurred) {
xmlrpc_value ** const valptr =
(xmlrpc_value**) va_arg(*args, xmlrpc_value**);
*valptr = valueP;
}
break;
case 'S':
validateType(envP, valueP, XMLRPC_TYPE_STRUCT);
if (!envP->fault_occurred) {
xmlrpc_value ** const valptr =
(xmlrpc_value**) va_arg(*args, xmlrpc_value**);
*valptr = valueP;
}
break;
case '(':
validateType(envP, valueP, XMLRPC_TYPE_ARRAY);
if (!envP->fault_occurred) {
parsearray(envP, valueP, format, ')', args);
(*format)++;
}
break;
case '{':
validateType(envP, valueP, XMLRPC_TYPE_STRUCT);
if (!envP->fault_occurred) {
parsestruct(envP, valueP, format, '}', args);
(*format)++;
}
break;
default:
xmlrpc_env_set_fault_formatted(
envP, XMLRPC_INTERNAL_ERROR, "Invalid format character '%c'",
formatSpecChar);
}
}
void
xmlrpc_parse_value_va(xmlrpc_env * const envP,
xmlrpc_value * const value,
const char * const format,
va_list args) {
const char *format_copy;
va_list args_copy;
XMLRPC_ASSERT_ENV_OK(envP);
XMLRPC_ASSERT_VALUE_OK(value);
XMLRPC_ASSERT(format != NULL);
format_copy = format;
VA_LIST_COPY(args_copy, args);
parsevalue(envP, value, &format_copy, &args_copy);
if (!envP->fault_occurred) {
XMLRPC_ASSERT(*format_copy == '\0');
}
}
void
xmlrpc_parse_value(xmlrpc_env * const envP,
xmlrpc_value * const value,
const char * const format,
...) {
va_list args;
va_start(args, format);
xmlrpc_parse_value_va(envP, value, format, args);
va_end(args);
}
/* Copyright (C) 2001 by First Peer, Inc. All rights reserved.
** Copyright (C) 2001 by Eric Kidd. All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
** SUCH DAMAGE. */
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