YAIP/src/request.c

#include "request.h"


Request* newRequest(){
	Request *request = malloc(sizeof(Request));
	memset(request, 0, sizeof(Request));
	request->headers = NULL;
	return request;
}

void requestFirstLine( Request *req, char line[] ){
	char method[20] = {'\0'}; //Get, post, etc.
	char *url = malloc(sizeof(char) *2048); // This may contain the method, the path, the domain and so on
	memset(url, '\0', sizeof(char) * 2048);
	char *currentPos;
	float version = 0;
	char protocol[6] = {'\0'};
	char host[254] = {'\0'};
	//https://stackoverflow.com/questions/417142/what-is-the-maximum-length-of-a-url-in-different-browsers
	char path[2000] = {'\0'};

	sscanf( line, "%20s %2048s HTTP/%f", method, url, &version );
	req->method = strdup(method);
	req->version = version;
	
	//We've pulled out the easy bits. Now to go through the url and pull out what we need
	currentPos = url;
	sscanf( currentPos, "%5[^:/]", protocol );
	if ( strlen( protocol ) > 0 ){
		currentPos = currentPos + strlen(protocol) + 3;
	}

	sscanf( currentPos, "%253[^:/]", host );
	if ( strlen( host ) > 0 ){
		currentPos = currentPos + strlen(host);
	}


	sscanf( currentPos, "%2000[^? ]", path );
	if ( strlen( path ) > 0 ){
		currentPos = currentPos + strlen(path);
	}

	req->protocol = malloc(sizeof(char) * strlen(protocol));
	strcpy(req->protocol, protocol);
	req->host = malloc(sizeof(char) * strlen(host));
	strcpy(req->host, host);
	req->path = malloc(sizeof(char) * strlen(path));
	strcpy(req->path, path);

	//The query string is anything left
	req->queryString = malloc(sizeof(char) * strlen(currentPos));
	strcpy(req->queryString, currentPos);
	

	free(url);
}


Request* newRequestFromSocket(int socket){
	Request *req = newRequest();
	int valread;
	char line[1024] = {0};
	// The first line will give us some important information
	valread = fdReadLine( socket, line, 1024);

	requestFirstLine(req, line);

	//a length of 2 will indicate an empty line which will split the headers
	//from the body (if there is a body)
	valread = fdReadLine( socket, line, 1024);
	while ( valread > 2 ){
		printf("%s",line );
		requestAddHeader( req, line );

		//I believe at this point all the headers are done.
		valread = fdReadLine( socket , line, 1024);
	}
	return req;
}

char* requestToString( Request *req, bool proxy){
	unsigned int fullLength = strlen(req->method) + 1 + sizeof( req->path ) +
		sizeof( req->queryString ) + 11 + headerListCharLength( req->headers );
	if ( proxy )
		fullLength += sizeof(req->method) + 3 + sizeof(req->host);


	char retString[fullLength];

	if (proxy)
		sprintf(retString, "%s %s://%s%s%s HTTP/%.1f\r\n%s", req->method,
			req->method, req->host, req->path, req->queryString, req->version,
			headersToString(req->headers));
	else
		sprintf(retString, "%s %s%s HTTP/%.1f\r\n%s", req->method,
			req->path, req->queryString, req->version,
			headersToString(req->headers));
	//	rsp->statusMessage,headersToString(rsp->headers),rsp->body);
	return strdup(retString);
	//return strdup(retString);
}

void requestAddHeader( Request *req, char header[] ){
	if ( req->headers == NULL ){
		req->headers = malloc(sizeof( HeaderList ));
		req->headers->header = newHeader( header );
		req->headers->next = NULL;
	} else
		addHeader( req->headers, header );
}