static int base64_helper(struct ast_channel *chan, const char *cmd, char *data,
char *buf, struct ast_str **str, ssize_t len)
{
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "Syntax: %s(<data>) - missing argument!\n", cmd);
return -1;
}
if (cmd[7] == 'E') {
if (buf) {
ast_base64encode(buf, (unsigned char *) data, strlen(data), len);
} else {
if (len >= 0) {
ast_str_make_space(str, len ? len : ast_str_strlen(*str) + strlen(data) * 4 / 3 + 2);
}
ast_base64encode(ast_str_buffer(*str) + ast_str_strlen(*str), (unsigned char *) data, strlen(data), ast_str_size(*str) - ast_str_strlen(*str));
ast_str_update(*str);
}
} else {
int decoded_len;
if (buf) {
decoded_len = ast_base64decode((unsigned char *) buf, data, len);
/* add a terminating null at the end of buf, or at the
* end of our decoded string, which ever is less */
buf[decoded_len <= (len - 1) ? decoded_len : len - 1] = '\0';
} else {
if (len >= 0) {
ast_str_make_space(str, len ? len : ast_str_strlen(*str) + strlen(data) * 3 / 4 + 2);
}
decoded_len = ast_base64decode((unsigned char *) ast_str_buffer(*str) + ast_str_strlen(*str), data, ast_str_size(*str) - ast_str_strlen(*str));
if (len)
/* add a terminating null at the end of our
* buffer, or at the end of our decoded string,
* which ever is less */
ast_str_buffer(*str)[decoded_len <= (len - 1) ? decoded_len : len - 1] = '\0';
else
/* space for the null is allocated above */
ast_str_buffer(*str)[decoded_len] = '\0';
ast_str_update(*str);
}
}
return 0;
}
static int blacklist_read2(struct ast_channel *chan, const char *cmd, char *data, struct ast_str **str, ssize_t len)
{
/* 2 bytes is a single integer, plus terminating null */
if (ast_str_size(*str) - ast_str_strlen(*str) < 2) {
if (len > ast_str_size(*str) || len == 0) {
ast_str_make_space(str, len ? len : ast_str_strlen(*str) + 2);
}
}
if (ast_str_size(*str) - ast_str_strlen(*str) >= 2) {
int res = blacklist_read(chan, cmd, data, ast_str_buffer(*str) + ast_str_strlen(*str), 2);
ast_str_update(*str);
return res;
}
return -1;
}
static void xpidf_to_string(void *body, struct ast_str **str)
{
pjxpidf_pres *pres = body;
int growths = 0;
int size;
do {
size = pjxpidf_print(pres, ast_str_buffer(*str), ast_str_size(*str) - 1);
if (size <= AST_PJSIP_XML_PROLOG_LEN) {
ast_str_make_space(str, ast_str_size(*str) * 2);
++growths;
}
} while (size <= AST_PJSIP_XML_PROLOG_LEN && growths < MAX_STRING_GROWTHS);
if (size <= AST_PJSIP_XML_PROLOG_LEN) {
ast_log(LOG_WARNING, "XPIDF body text too large\n");
return;
}
*(ast_str_buffer(*str) + size) = '\0';
ast_str_update(*str);
}
static void dialog_info_to_string(void *body, struct ast_str **str)
{
pj_xml_node *dialog_info = body;
int growths = 0;
int size;
do {
size = pj_xml_print(dialog_info, ast_str_buffer(*str), ast_str_size(*str) - 1, PJ_TRUE);
if (size <= AST_PJSIP_XML_PROLOG_LEN) {
ast_str_make_space(str, ast_str_size(*str) * 2);
++growths;
}
} while (size <= AST_PJSIP_XML_PROLOG_LEN && growths < MAX_STRING_GROWTHS);
if (size <= AST_PJSIP_XML_PROLOG_LEN) {
ast_log(LOG_WARNING, "dialog-info+xml body text too large\n");
return;
}
*(ast_str_buffer(*str) + size) = '\0';
ast_str_update(*str);
}
