httpr.c

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/*
 * build http request headers
 *
 * Authors:     Gerhard Khueny <[e-mail]>
 *
 * TODO:        
 *
 * Fixes:
 *
 * For license terms, see the file COPYING in the project directory.
 */

#include <stdio.h>
#include <sys/types.h>
#include <stdlib.h>
#include <unistd.h>
#include <glib.h>
#include <string.h>
#include "httpr.h"


#define NORMAL_URL_CHAR "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-."


gchar *gsms_http_url_encode(gchar * str)
{
	gchar *new_url;
	GString *url; 

	url=g_string_new("");

	while (*str) {
		if (index(NORMAL_URL_CHAR, *str))
			g_string_append_c(url,*str);
		else {
			if (*str == ' ')
				g_string_append_c(url,'+');

			else if (*str == '\n')
				g_string_append(url,"%0D%0A");

			else
				g_string_sprintfa(url, "%%%2X",
						  (guchar) * str);
		}
		str++;
	}
	
	new_url=url->str;
	g_string_free(url,FALSE);

	return new_url;
}

gint gsms_http_create_message(GSmsHttp * h)
{
	GString *message; 
	

	if (strcmp(h->method, "GET") == 0) {
		if (h->url == NULL)
			return GSMS_HTTP_NO_URL;

		message= g_string_new("");

		g_string_sprintfa(message, "GET %s", h->url);
		if (h->body != NULL)
			g_string_sprintfa(message, "?%s", h->body);
	} else if (strcmp(h->method, "POST") == 0) {
		if (h->url == NULL)
			return GSMS_HTTP_NO_URL;

		if (h->ctype == NULL)
			return GSMS_HTTP_NO_CTYPE;

		if (h->body == NULL)
			return GSMS_HTTP_NO_BODY;

		message= g_string_new("");

		g_string_sprintfa(message, "POST %s", h->url);
	} else
		return GSMS_HTTP_INVALID_METHOD;

	if (h->protokoll == NULL)
		g_string_sprintfa(message, " HTTP/1.0\r\n");
	else
		g_string_sprintfa(message, " %s\r\n", h->protokoll);

	if (h->referer != NULL)
		g_string_sprintfa(message,"Referer: %s\r\n", h->referer);

	if (h->host != NULL)
		g_string_sprintfa(message, "Host: %s\r\n", h->host);
	
	if (h->connection != NULL)
		g_string_sprintfa(message,"Connection: %s\r\n", h->connection);

	if (h->proxy_connection != NULL)
		g_string_sprintfa(message,"Proxy-Connection: %s\r\n",
				  h->proxy_connection);
	
	if (h->acceptlang != NULL)
		g_string_sprintfa(message, 
				  "Accept-Language: %s\r\n", h->acceptlang);
	
	if (h->acceptchar != NULL)
		g_string_sprintfa(message,
				  "Accept-Charset: %s\r\n", h->acceptchar);

	if (h->accept != NULL)
		g_string_sprintfa(message, "Accept: %s\r\n", h->accept);

	if (h->useragent != NULL)
		g_string_sprintfa(message, "User-Agent: %s\r\n", h->useragent);
	
	if (h->cookie != NULL)
		g_string_sprintfa(message, "Cookie: %s\r\n", h->cookie);

	/* For POST method set Content */	
	if (strcmp(h->method, "POST") == 0)  
		g_string_sprintfa(message,
				  "Content-Type: %s\r\nContent-Length: %d\r\n\r\n%s\r\n",
				  h->ctype, strlen(h->body), h->body);
	else
		g_string_append(message,"\r\n");

	h->message = message->str;
	g_string_free(message,FALSE);	
	
	return GSMS_HTTP_OK;
}

void gsms_http_clean_up(GSmsHttp *ht)
{
	g_free(ht->method);
	g_free(ht->url);
	g_free(ht->protokoll);
	g_free(ht->host);
	g_free(ht->referer);
	g_free(ht->accept);
	g_free(ht->acceptlang);
	g_free(ht->acceptchar);
	g_free(ht->connection);
	g_free(ht->cookie);
	g_free(ht->useragent);
	g_free(ht->body);
	g_free(ht->message);
}


gchar *gsms_http_strerror(gint error)
{
	static gchar *errors[] = { "Success", "Invalid method", "No url",
				   "No host", "No referer", "No Content-Type", 
				   "No BODY"};
	
	if (error >= 0 && error < GSMS_HTTP_N_ERRORS)
		return errors[error];

	else
		return "Unknown error";
}