http get linux c实现，感觉linux curl命令行好像有点问题

客官°小女子只卖身不卖艺 2024-02-19 21:27 10阅读 0赞

#### http \# cat http.c   \#include <stdlib.h>   \#include <arpa/inet.h>   \#include <netdb.h>   \#include <string.h>   \#include <stdio.h>      \#include "http.h"      \#define BUFFER\_SIZE 1024   \#define HTTP\_POST "POST /%s HTTP/1.1\\r\\nHOST: %s:%d\\r\\nAccept: \*/\*\\r\\n"\\   "Content-Type:application/x-www-form-urlencoded\\r\\nContent-Length: %d\\r\\n\\r\\n%s"   \#define HTTP\_GET "GET /%s HTTP/1.1\\r\\nHOST: %s:%d\\r\\nAccept: \*/\*\\r\\n\\r\\n"   \#define LOG(format,...) printf("\["\_\_DATE\_\_" "\_\_TIME\_\_" " \_\_FILE\_\_" %s %d\] " format "\\n", \_\_FUNCTION\_\_, \_\_LINE\_\_, \#\#\_\_VA\_ARGS\_\_)      static int http\_tcpclient\_create(const char \*host, int port)\{   struct hostent \*he;   struct sockaddr\_in server\_addr;   int socket\_fd;      if((he = gethostbyname(host))==NULL)\{   return -1;   \}      server\_addr.sin\_family = AF\_INET;   server\_addr.sin\_port = htons(port);   server\_addr.sin\_addr = \*((struct in\_addr \*)he->h\_addr);      if((socket\_fd = socket(AF\_INET,SOCK\_STREAM,0))==-1)\{   return -1;   \}      if(connect(socket\_fd, (struct sockaddr \*)&server\_addr,sizeof(struct sockaddr)) == -1)\{   return -1;   \}      return socket\_fd;   \}      static void http\_tcpclient\_close(int socket)\{   close(socket);   \}      static int http\_parse\_url(const char \*url,char \*host,char \*file,int \*port)   \{   char \*ptr1,\*ptr2;   int len = 0;   if(!url || !host || !file || !port)\{   return -1;   \}      ptr1 = (char \*)url;      if(!strncmp(ptr1,"http://",strlen("http://")))\{   ptr1 += strlen("http://");   \}else\{   return -1;   \}      ptr2 = strchr(ptr1,'/');   if(ptr2)\{   len = strlen(ptr1) - strlen(ptr2);   memcpy(host,ptr1,len);   host\[len\] = '\\0';   if(\*(ptr2 + 1))\{   memcpy(file,ptr2 + 1,strlen(ptr2) - 1 );   file\[strlen(ptr2) - 1\] = '\\0';   \}   \}else\{   memcpy(host,ptr1,strlen(ptr1));   host\[strlen(ptr1)\] = '\\0';   \}   //get host and ip   ptr1 = strchr(host,':');   if(ptr1)\{   \*ptr1++ = '\\0';   \*port = atoi(ptr1);   \}else\{   \*port = MY\_HTTP\_DEFAULT\_PORT;   \}      return 0;   \}         static int http\_tcpclient\_recv(int socket,char \*lpbuff)\{   int recvnum = 0;   FILE \*fd = fopen("a.txt", "a+");   if (fd == NULL)   \{   printf("fd is NULL and open file fail\\n");   return;   \}   int len = recv(socket,lpbuff, BUFFER\_SIZE\*4, 0);   printf("len:%d, recvnum:%d\\n", len, recvnum);   if (len > 0)   \{   puts(lpbuff);   fwrite(lpbuff,len,1, fd);   \}      int i = 20;   while(len > 0)   \{   recvnum += len;   //puts(lpbuff);   memset(lpbuff, 0, BUFFER\_SIZE\*4);   len = recv(socket, lpbuff, BUFFER\_SIZE\*4, 0);   fwrite(lpbuff,len,1, fd);   printf("len:%d, recvnum:%d\\n", len, recvnum);   puts(lpbuff);   \}   fclose(fd);   //recvnum = recv(socket, lpbuff, BUFFER\_SIZE\*4,0);         return recvnum;   \}      static int http\_tcpclient\_send(int socket,char \*buff,int size)\{   int sent=0,tmpres=0;      while(sent < size)\{   tmpres = send(socket,buff+sent,size-sent,0);   if(tmpres == -1)\{   return -1;   \}   sent += tmpres;   \}   return sent;   \}      static char \*http\_parse\_result(const char\*lpbuf)   \{   char \*ptmp = NULL;   char \*response = NULL;   ptmp = (char\*)strstr(lpbuf,"HTTP/1.1");   if(!ptmp)\{   printf("http/1.1 not faind\\n");   return NULL;   \}   if(atoi(ptmp + 9)!=200)\{   printf("result:\\n%s\\n",lpbuf);   return NULL;   \}      ptmp = (char\*)strstr(lpbuf,"\\r\\n\\r\\n");   if(!ptmp)\{   printf("ptmp is NULL\\n");   return NULL;   \}   response = (char \*)malloc(strlen(ptmp)+1);   if(!response)\{   printf("malloc failed \\n");   return NULL;   \}   strcpy(response,ptmp+4);   return response;   \}      char \* http\_post(const char \*url,const char \*post\_str)\{      char post\[BUFFER\_SIZE\] = \{'\\0'\};   int socket\_fd = -1;   char lpbuf\[BUFFER\_SIZE\*4\] = \{'\\0'\};   char \*ptmp;   char host\_addr\[BUFFER\_SIZE\] = \{'\\0'\};   char file\[BUFFER\_SIZE\] = \{'\\0'\};   int port = 0;   int len=0;   char \*response = NULL;      if(!url || !post\_str)\{   printf(" failed!\\n");   return NULL;   \}      if(http\_parse\_url(url,host\_addr,file,&port))\{   printf("http\_parse\_url failed!\\n");   return NULL;   \}   //printf("host\_addr : %s\\tfile:%s\\t,%d\\n",host\_addr,file,port);      socket\_fd = http\_tcpclient\_create(host\_addr,port);   if(socket\_fd < 0)\{   printf("http\_tcpclient\_create failed\\n");   return NULL;   \}      sprintf(lpbuf,HTTP\_POST,file,host\_addr,port,strlen(post\_str),post\_str);      if(http\_tcpclient\_send(socket\_fd,lpbuf,strlen(lpbuf)) < 0)\{   printf("http\_tcpclient\_send failed..\\n");   return NULL;   \}   //printf("·¢ËÇÇ:\\n%s\\n",lpbuf);      /\*it's time to recv from server\*/   if(http\_tcpclient\_recv(socket\_fd,lpbuf) <= 0)\{   printf("http\_tcpclient\_recv failed\\n");   return NULL;   \}      http\_tcpclient\_close(socket\_fd);      return http\_parse\_result(lpbuf);   \}      char \* http\_get(const char \*url)   \{   LOG("");   char post\[BUFFER\_SIZE\] = \{'\\0'\};   int socket\_fd = -1;   char lpbuf\[BUFFER\_SIZE\*4\] = \{'\\0'\};   char \*ptmp;   char host\_addr\[BUFFER\_SIZE\] = \{'\\0'\};   char file\[BUFFER\_SIZE\] = \{'\\0'\};   int port = 0;   int len=0;      if(!url)\{   printf(" failed!\\n");   return NULL;   \}      if(http\_parse\_url(url,host\_addr,file,&port))\{   printf("http\_parse\_url failed!\\n");   return NULL;   \}   //printf("host\_addr : %s\\tfile:%s\\t,%d\\n",host\_addr,file,port);      LOG("http\_tcpclient\_create");   socket\_fd = http\_tcpclient\_create(host\_addr,port);   if(socket\_fd < 0)\{   printf("http\_tcpclient\_create failed\\n");   return NULL;   \}      sprintf(lpbuf,HTTP\_GET,file,host\_addr,port);      LOG("http\_tcpclient\_send");   if(http\_tcpclient\_send(socket\_fd,lpbuf,strlen(lpbuf)) < 0)\{   printf("http\_tcpclient\_send failed..\\n");   return NULL;   \}   // printf("·¢ËÇÇ:\\n%s\\n",lpbuf);      LOG("http\_tcpclient\_recv");   if(http\_tcpclient\_recv(socket\_fd,lpbuf) <= 0)\{   printf("http\_tcpclient\_recv failed\\n");   return NULL;   \}   http\_tcpclient\_close(socket\_fd);      LOG("http\_parse\_result");   return http\_parse\_result(lpbuf);   \}      int main(int argc, char\* argv\[\])   \{   // char \* p = http\_get("http://10.247.177.163:8080/");   //char \* p = http\_get(argv\[1\]);   char \* p = http\_get(argv\[1\]);   //puts(p);      \} ####

####    http \# cat http.h   \#ifndef \_MY\_HTTP\_H   \#define \_MY\_HTTP\_H      \#define MY\_HTTP\_DEFAULT\_PORT 80      char \* http\_get(const char \*url);   char \* http\_post(const char \*url,const char \* post\_str);      \#endif ####