static pj_status_t sipclf_add_index(pj_str_t* line1, int value)
{
value += 61; /*the headers index length + \n*/
pj_val_to_hex_digit( (value & 0xFF00) >> 8, line1->ptr + line1->slen);
pj_val_to_hex_digit( (value & 0x00FF), line1->ptr + line1->slen + 2);
line1->slen += 4;
}
PJ_DEF(pj_ssize_t) pj_strncpy2_escape( char *dst_str, const pj_str_t *src_str,
pj_ssize_t max, const pj_cis_t *unres)
{
const char *src = src_str->ptr;
const char *src_end = src + src_str->slen;
char *dst = dst_str;
char *dst_end = dst + max;
if (max < src_str->slen)
return -1;
while (src != src_end && dst != dst_end) {
if (pj_cis_match(unres, *src)) {
*dst++ = *src++;
} else {
if (dst < dst_end-2) {
*dst++ = '%';
pj_val_to_hex_digit(*src, dst);
dst+=2;
++src;
} else {
break;
}
}
}
return src==src_end ? dst-dst_str : -1;
}
/* Transform digest to string.
* output must be at least PJSIP_MD5STRLEN+1 bytes.
*
* NOTE: THE OUTPUT STRING IS NOT NULL TERMINATED!
*/
static void digest2str(const unsigned char digest[], char *output)
{
int i;
for (i = 0; i<16; ++i) {
pj_val_to_hex_digit(digest[i], output);
output += 2;
}
}
static pj_status_t write_string_escaped(const pj_str_t *value,
struct write_state *st)
{
const char *ip = value->ptr;
const char *iend = value->ptr + value->slen;
char buf[ESC_BUF_LEN];
char *op = buf;
char *oend = buf + ESC_BUF_LEN;
pj_status_t status;
while (ip != iend) {
/* Write to buffer to speedup writing instead of calling
* the callback one by one for each character.
*/
while (ip != iend && op != oend) {
if (oend - op < 2)
break;
if (*ip == '"') {
*op++ = '\\';
*op++ = '"';
ip++;
} else if (*ip == '\\') {
*op++ = '\\';
*op++ = '\\';
ip++;
} else if (*ip == '/') {
*op++ = '\\';
*op++ = '/';
ip++;
} else if (*ip == '\b') {
*op++ = '\\';
*op++ = 'b';
ip++;
} else if (*ip == '\f') {
*op++ = '\\';
*op++ = 'f';
ip++;
} else if (*ip == '\n') {
*op++ = '\\';
*op++ = 'n';
ip++;
} else if (*ip == '\r') {
*op++ = '\\';
*op++ = 'r';
ip++;
} else if (*ip == '\t') {
*op++ = '\\';
*op++ = 't';
ip++;
} else if ((*ip >= 32 && *ip < 127)) {
/* unescaped */
*op++ = *ip++;
} else {
/* escaped */
if (oend - op < 6)
break;
*op++ = '\\';
*op++ = 'u';
*op++ = '0';
*op++ = '0';
pj_val_to_hex_digit(*ip, op);
op+=2;
ip++;
}
}
CHECK( st->writer( buf, (unsigned)(op-buf), st->user_data) );
op = buf;
}
return PJ_SUCCESS;
}
