static int decode_5(const char *url_data, char *dest)
{
char *pos = dest;
for (size_t i = 0; url_data[i] != '\0'; i++)
{
if (url_data[i] == '+') // decode space
*(pos++) = ' ';
else if (url_data[i] == '%')
{
// decode hex value
if (is_hex(url_data[i + 1]) && is_hex(url_data[i + 2]))
{
// this is a percent encoded value.
*(pos++) = (hex_val(url_data[i + 1]) << 4) | hex_val(url_data[i + 2]);
i += 2;
}
else
{
// there was an error in the URL encoding...
return -1;
}
}
else
*(pos++) = url_data[i];
}
*pos = '\0';
return pos - dest;
}
static int build_unifont_glyph(struct unifont_glyph *g, const char *buf)
{
int val;
const char *orig = buf;
val = 0;
while (*buf && *buf != ':') {
val <<= 4;
val += hex_val(*buf++);
}
if (*buf++ != ':') {
fprintf(stderr, "genunifont: invalid file format: %s\n", orig);
return -EFAULT;
}
g->codepoint = val;
g->len = 0;
while (*buf && *buf != '\n' && g->len < MAX_DATA_SIZE) {
g->data[g->len] = *buf++;
++g->len;
}
return 0;
}
ssize_t http_decode_url_unsafe(char* dest, const char* url_data) {
char* pos = dest;
while (*url_data) {
if (*url_data == '+') {
// decode space
*(pos++) = ' ';
++url_data;
} else if (*url_data == '%') {
// decode hex value
// this is a percent encoded value.
*(pos++) = (hex_val(url_data[1]) << 4) | hex_val(url_data[2]);
url_data += 3;
} else
*(pos++) = *(url_data++);
}
*pos = 0;
return pos - dest;
}
static acpi_status acpi_str_to_uuid(char *str, u8 *uuid)
{
int i;
static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21,
24, 26, 28, 30, 32, 34};
if (strlen(str) != 36)
return AE_BAD_PARAMETER;
for (i = 0; i < 36; i++) {
if (i == 8 || i == 13 || i == 18 || i == 23) {
if (str[i] != '-')
return AE_BAD_PARAMETER;
} else if (!isxdigit(str[i]))
return AE_BAD_PARAMETER;
}
for (i = 0; i < 16; i++) {
uuid[i] = hex_val(str[opc_map_to_uuid[i]]) << 4;
uuid[i] |= hex_val(str[opc_map_to_uuid[i] + 1]);
}
return AE_OK;
}
int dec_to_hex(int n,char hex[])
{
int helper,i;
helper = n;
for(i=0; helper; i++)
{
hex[i]=hex_val(helper%16);
helper=helper/16;
}
return 0;
}
static void print_unifont_glyph(FILE *out, const struct unifont_glyph *g)
{
size_t i;
uint8_t val;
switch (g->len) {
case 32:
case 64:
break;
default:
fprintf(stderr, "genunifont: invalid data size %d for %x",
g->len, g->codepoint);
return;
}
fprintf(out, "%c", g->len / 2);
for (i = 0; i < g->len; i += 2) {
val = hex_val(g->data[i]) << 4;
val |= hex_val(g->data[i + 1]);
fprintf(out, "%c", val);
}
for ( ; i < 64; i += 2)
fprintf(out, "%c", 0);
}
static int decode_6(const char *url_data, char *dest)
{
char *pos = dest;
while (*url_data != '\0')
{
if (*url_data == '+')
{
// decode space
*(pos++) = ' ';
++url_data;
}
else if (*url_data == '%')
{
// decode hex value
// this is a percent encoded value.
*(pos++) = (hex_val(url_data[1]) << 4) | hex_val(url_data[2]);
url_data += 3;
}
else
*(pos++) = *(url_data++);
}
*pos = '\0';
return pos - dest;
}
static char* unescape_string(char* s, char** end, nx_json_unicode_encoder encoder) {
char* p=s;
char* d=s;
char c;
while ((c=*p++)) {
if (c=='"') {
*d='\0';
*end=p;
return s;
}
else if (c=='\\') {
switch (*p) {
case '\\':
case '/':
case '"':
*d++=*p++;
break;
case 'b':
*d++='\b'; p++;
break;
case 'f':
*d++='\f'; p++;
break;
case 'n':
*d++='\n'; p++;
break;
case 'r':
*d++='\r'; p++;
break;
case 't':
*d++='\t'; p++;
break;
case 'u': // unicode
{
char *ps;
int h1, h2, h3, h4;
unsigned int codepoint;
if (!encoder) {
// leave untouched
*d++=c;
break;
}
ps=p-1;
if ((h1=hex_val(p[1]))<0 || (h2=hex_val(p[2]))<0 || (h3=hex_val(p[3]))<0 || (h4=hex_val(p[4]))<0) {
NX_JSON_REPORT_ERROR("invalid unicode escape", p-1);
return 0;
}
codepoint=h1<<12|h2<<8|h3<<4|h4;
if ((codepoint & 0xfc00)==0xd800) { // high surrogate; need one more unicode to succeed
unsigned int codepoint2;
p+=6;
if (p[-1]!='\\' || *p!='u' || (h1=hex_val(p[1]))<0 || (h2=hex_val(p[2]))<0 || (h3=hex_val(p[3]))<0 || (h4=hex_val(p[4]))<0) {
NX_JSON_REPORT_ERROR("invalid unicode surrogate", ps);
return 0;
}
codepoint2=h1<<12|h2<<8|h3<<4|h4;
if ((codepoint2 & 0xfc00)!=0xdc00) {
NX_JSON_REPORT_ERROR("invalid unicode surrogate", ps);
return 0;
}
codepoint=0x10000+((codepoint-0xd800)<<10)+(codepoint2-0xdc00);
}
if (!encoder(codepoint, d, &d)) {
NX_JSON_REPORT_ERROR("invalid codepoint", ps);
return 0;
}
p+=5;
break;
}
default:
// leave untouched
*d++=c;
break;
}
}
else {
*d++=c;
}
}
NX_JSON_REPORT_ERROR("no closing quote for string", s);
return 0;
}
