void cg_http_packet_read_headers(CgHttpPacket *httpPkt, CgSocket *sock, char *lineBuf, size_t lineBufSize)
{
CgStringTokenizer *strTok;
CgHttpHeader *header;
ssize_t readLen;
char *name, *value;
cg_log_debug_l4("Entering...\n");
while (1) {
readLen = cg_socket_readline(sock, lineBuf, lineBufSize);
if (readLen <= 2)
break;
name = NULL;
value = NULL;
strTok = cg_string_tokenizer_new(lineBuf, CG_HTTP_HEADERLINE_DELIM);
if (cg_string_tokenizer_hasmoretoken(strTok) == TRUE)
name = cg_string_tokenizer_nexttoken(strTok);
if (cg_string_tokenizer_hasmoretoken(strTok) == TRUE) {
value = cg_string_tokenizer_nextalltoken(strTok);
cg_strrtrim(value, CG_HTTP_HEADERLINE_DELIM, cg_strlen(CG_HTTP_HEADERLINE_DELIM));
}
if (0 < cg_strlen(name)) {
if (cg_strlen(value) == 0)
value = "";
header = cg_http_header_new();
cg_http_header_setname(header, name);
cg_http_header_setvalue(header, value);
cg_http_packet_addheader(httpPkt, header);
}
cg_string_tokenizer_delete(strTok);
}
cg_log_debug_l4("Leaving...\n");
}
/**
* Callback function for CURL to read each HTTP header line
* CgStringTokenizer might have been a viable choice to do the parsing
* of various fields. Then again, it would not have read correctly a
* header line with, for example, the time (because of multiple use of colons):
* Foo: 12:34:56 EEST DST
*/
static size_t cg_http_request_header_callback(void *ptr, size_t size, size_t nmemb, void *stream)
{
char* headerLine = NULL;
char* name = NULL;
char* value = NULL;
CgStringTokenizer* strTok = NULL;
CgHttpResponse* httpRes = NULL;
int head = 0;
int tail = 0;
cg_log_debug_l4("Entering...\n");
if (stream == NULL || ptr == NULL)
{
return 0;
}
httpRes = (CgHttpResponse*) stream;
headerLine = (char*) ptr;
/* Read header items */
if (cg_strncmp(headerLine, CG_HTTP_VER11, cg_strlen(CG_HTTP_VER11)) == 0
||
cg_strncmp(headerLine, CG_HTTP_VER10, cg_strlen(CG_HTTP_VER10)) == 0)
{
/* <HTTP/version> <status code> <reason phrase> */
strTok = cg_string_tokenizer_new(headerLine, CG_HTTP_STATUSLINE_DELIM);
if (cg_string_tokenizer_hasmoretoken(strTok) == TRUE)
{
cg_http_response_setversion(httpRes, cg_string_tokenizer_nexttoken(strTok));
}
if (cg_string_tokenizer_hasmoretoken(strTok) == TRUE)
{
cg_http_response_setstatuscode(httpRes, atoi(cg_string_tokenizer_nexttoken(strTok)));
}
if (cg_string_tokenizer_hasmoretoken(strTok) == TRUE)
{
value = cg_string_tokenizer_nextalltoken(strTok);
cg_strrtrim(value, CG_HTTP_STATUSLINE_DELIM, cg_strlen(CG_HTTP_STATUSLINE_DELIM));
cg_http_response_setreasonphrase(httpRes, value);
}
cg_string_tokenizer_delete(strTok);
}
else
{
/* Find the header delimiter */
for (head = 0; head < size * nmemb; head++)
{
if (headerLine[head] == ':')
{
break;
}
}
/* Unable to find a colon, this is not a valid header line */
if (head <= 0 || head >= (size * nmemb) - 1)
{
return size * nmemb;
}
/* Take the header name */
name = (char*) malloc(head + 1);
if ( NULL == name )
{
cg_log_debug_s("Memory allocation failure!\n");
return 0;
}
memcpy(name, headerLine, head);
name[head] = '\0';
/* Skip colon and space(s) */
for (head++; head < size * nmemb; head++)
{
if (headerLine[head] != 0x20)
{
break;
}
}
/* Unable to find anything sensible anymore */
if (head >= (size * nmemb) - 1)
{
return size * nmemb;
}
/* Find the end of the actual value, without CRLF */
for (tail = size * nmemb; tail > 0; tail --)
{
if (headerLine[tail] == '\r')
{
break;
}
else if (headerLine[tail] == '\n')
{
if (tail > 0 && headerLine[tail - 1] == '\r')
{
tail--;
break;
}
}
}
/* Unable to find CRLF */
if (tail <= head)
{
free(name);
return size * nmemb;
}
/* Take the header value */
value = (char*) malloc(tail - head + 1);
if ( NULL == value )
{
cg_log_debug_s("Memory allocation failure!\n");
return 0;
}
memcpy(value, headerLine + head, tail - head);
value[tail - head] = '\0';
/* Set the header value to the response */
cg_http_response_setheadervalue(httpRes, name, value);
free(name);
free(value);
}
return size * nmemb;
cg_log_debug_l4("Leaving...\n");
}
