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/*File : http.c
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*Auth : sjin
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*Date : 20141206
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*Mail : [email protected]
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <string.h>
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#include "http.h"
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#define BUFFER_SIZE 1024
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#define HTTP_POST "POST /%s HTTP/1.1\r\nHOST: %s:%d\r\nAccept: */*\r\n"\
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"Content-Type:application/x-www-form-urlencoded\r\nContent-Length: %d\r\n\r\n%s"
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#define HTTP_GET "GET /%s HTTP/1.1\r\nHOST: %s:%d\r\nAccept: */*\r\n\r\n"
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static int http_tcpclient_create(const char *host, int port){
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struct hostent *he;
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struct sockaddr_in server_addr;
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int socket_fd;
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if((he = gethostbyname(host))==NULL){
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return -1;
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}
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server_addr.sin_family = AF_INET;
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server_addr.sin_port = htons(port);
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server_addr.sin_addr = *((struct in_addr *)he->h_addr);
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if((socket_fd = socket(AF_INET,SOCK_STREAM,0))==-1){
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return -1;
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}
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if(connect(socket_fd, (struct sockaddr *)&server_addr,sizeof(struct sockaddr)) == -1){
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return -1;
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}
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return socket_fd;
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}
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static void http_tcpclient_close(int socket){
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close(socket);
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}
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static int http_parse_url(const char *url,char *host,char *file,int *port)
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{
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char *ptr1,*ptr2;
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int len = 0;
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if(!url || !host || !file || !port){
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return -1;
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}
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ptr1 = (char *)url;
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if(!strncmp(ptr1,"http://",strlen("http://"))){
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ptr1 += strlen("http://");
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}else{
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return -1;
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}
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ptr2 = strchr(ptr1,'/');
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if(ptr2){
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len = strlen(ptr1) - strlen(ptr2);
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memcpy(host,ptr1,len);
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host[len] = '\0';
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if(*(ptr2 + 1)){
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memcpy(file,ptr2 + 1,strlen(ptr2) - 1 );
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file[strlen(ptr2) - 1] = '\0';
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}
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}else{
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memcpy(host,ptr1,strlen(ptr1));
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host[strlen(ptr1)] = '\0';
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}
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//get host and ip
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ptr1 = strchr(host,':');
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if(ptr1){
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*ptr1++ = '\0';
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*port = atoi(ptr1);
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}else{
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*port = MY_HTTP_DEFAULT_PORT;
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}
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return 0;
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}
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static int http_tcpclient_recv(int socket,char *lpbuff){
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int recvnum = 0;
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recvnum = recv(socket, lpbuff,BUFFER_SIZE*4,0);
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return recvnum;
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}
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static int http_tcpclient_send(int socket,char *buff,int size){
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int sent=0,tmpres=0;
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while(sent < size){
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tmpres = send(socket,buff+sent,size-sent,0);
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if(tmpres == -1){
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return -1;
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}
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sent += tmpres;
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}
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return sent;
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}
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static char *http_parse_result(const char*lpbuf)
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{
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char *ptmp = NULL;
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char *response = NULL;
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ptmp = (char*)strstr(lpbuf,"HTTP/1.1");
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if(!ptmp){
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printf("http/1.1 not faind\n");
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return NULL;
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}
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if(atoi(ptmp + 9)!=200){
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printf("result:\n%s\n",lpbuf);
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return NULL;
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}
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ptmp = (char*)strstr(lpbuf,"\r\n\r\n");
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if(!ptmp){
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printf("ptmp is NULL\n");
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return NULL;
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}
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response = (char *)malloc(strlen(ptmp)+1);
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if(!response){
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printf("malloc failed \n");
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return NULL;
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}
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strcpy(response,ptmp+4);
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return response;
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}
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char * http_post(const char *url,const char *post_str){
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char post[BUFFER_SIZE] = {'\0'};
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int socket_fd = -1;
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char lpbuf[BUFFER_SIZE*4] = {'\0'};
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char *ptmp;
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char host_addr[BUFFER_SIZE] = {'\0'};
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char file[BUFFER_SIZE] = {'\0'};
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int port = 0;
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int len=0;
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char *response = NULL;
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if(!url || !post_str){
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printf(" failed!\n");
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return NULL;
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}
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if(http_parse_url(url,host_addr,file,&port)){
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printf("http_parse_url failed!\n");
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return NULL;
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}
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//printf("host_addr : %s\tfile:%s\t,%d\n",host_addr,file,port);
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socket_fd = http_tcpclient_create(host_addr,port);
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if(socket_fd < 0){
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printf("http_tcpclient_create failed\n");
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return NULL;
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}
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sprintf(lpbuf,HTTP_POST,file,host_addr,port,strlen(post_str),post_str);
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if(http_tcpclient_send(socket_fd,lpbuf,strlen(lpbuf)) < 0){
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printf("http_tcpclient_send failed..\n");
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return NULL;
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}
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//printf("发送请求:\n%s\n",lpbuf);
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/*it's time to recv from server*/
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if(http_tcpclient_recv(socket_fd,lpbuf) <= 0){
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printf("http_tcpclient_recv failed\n");
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return NULL;
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}
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http_tcpclient_close(socket_fd);
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return http_parse_result(lpbuf);
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}
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char * http_get(const char *url)
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{
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char post[BUFFER_SIZE] = {'\0'};
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int socket_fd = -1;
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char lpbuf[BUFFER_SIZE*4] = {'\0'};
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char *ptmp;
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char host_addr[BUFFER_SIZE] = {'\0'};
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char file[BUFFER_SIZE] = {'\0'};
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int port = 0;
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int len=0;
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if(!url){
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printf(" failed!\n");
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return NULL;
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}
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if(http_parse_url(url,host_addr,file,&port)){
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printf("http_parse_url failed!\n");
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return NULL;
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}
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//printf("host_addr : %s\tfile:%s\t,%d\n",host_addr,file,port);
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socket_fd = http_tcpclient_create(host_addr,port);
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if(socket_fd < 0){
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printf("http_tcpclient_create failed\n");
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return NULL;
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}
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sprintf(lpbuf,HTTP_GET,file,host_addr,port);
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if(http_tcpclient_send(socket_fd,lpbuf,strlen(lpbuf)) < 0){
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printf("http_tcpclient_send failed..\n");
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return NULL;
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}
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// printf("发送请求:\n%s\n",lpbuf);
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if(http_tcpclient_recv(socket_fd,lpbuf) <= 0){
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printf("http_tcpclient_recv failed\n");
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return NULL;
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}
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http_tcpclient_close(socket_fd);
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return http_parse_result(lpbuf);
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}