wmpop3/wmpop3/Pop3Client.c

   1 /* Author : Scott Holden ( scotth@thezone.net )
   2  *
   3  * Pop3 Email checker.
   4  *
   5  * Last Updated : Mar 20, 1999
   6  *
   7  */
   8
   9
  10 #include "Pop3Client.h"
  11 #include <string.h>
  12 #include <sys/types.h>
  13 #include <sys/socket.h>
  14 #include <netinet/in.h>
  15 #include <netdb.h>
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <unistd.h>
  19
  20 struct pop3_struct{
  21         struct sockaddr_in server;
  22         struct hostent *hp;
  23         enum   {CONNECTED, NOT_CONNECTED} connected;
  24         char   inBuf[1024];
  25         int    inBufSize;
  26         char   outBuf[1024];
  27         int    outBufSize;
  28         int    s;
  29         char   password[256];
  30         char   userName[256];
  31         int    serverPort;
  32         int    localPort;
  33         int    numOfMessages;
  34         int    numOfUnreadMessages;
  35
  36 };
  37
  38 Pop3 pop3Create(void){
  39
  40     Pop3 pc;
  41
  42     pc = (Pop3)malloc( sizeof(*pc) );
  43     if( pc == 0)
  44         return 0;
  45     strcpy(pc->password , "");
  46     strcpy(pc->userName , "");
  47     pc->connected     = NOT_CONNECTED;
  48     pc->serverPort    = 110;
  49     pc->localPort     = 0;
  50     pc->numOfMessages = 0;
  51     pc->numOfUnreadMessages = 0;
  52     pc->inBufSize     = 0;
  53     pc->outBufSize    = 0;
  54
  55     return pc;
  56 }
  57 int pop3MakeConnection(Pop3 pc, char *serverName, int port){
  58
  59     pc->s = socket(AF_INET, SOCK_STREAM, 0 );
  60     memset( &(pc->server), 0 , sizeof(pc->server));
  61     pc->server.sin_family = AF_INET;
  62     pc->hp = gethostbyname(serverName);
  63     if( pc->hp == 0)
  64         return -1;
  65     memcpy( &(pc->server.sin_addr), pc->hp->h_addr, pc->hp->h_length);
  66     pc->server.sin_port = htons(port);
  67     if ( connect(pc->s, (struct sockaddr *)&(pc->server)
  68                                , sizeof(pc->server)) < 0 )
  69         return -1;
  70     pc->connected = CONNECTED;
  71    return 0;
  72 }
  73
  74 int pop3IsConnected(Pop3 pc){
  75
  76     if( pc->connected == CONNECTED)
  77         return 1;
  78     return 0;
  79 }
  80
  81 int pop3Login(Pop3 pc, char *name, char *pass){
  82
  83       int size;
  84       char temp[1024];
  85
  86       if( pc->connected == NOT_CONNECTED ){
  87           perror("Not Connected To Server\n");
  88           return -1;
  89       }
  90
  91       size = recv(pc->s,&pc->inBuf,1024,0);
  92       memset(temp,0,1024);
  93       memcpy(temp,pc->inBuf,size);
  94       if( temp[0] != '+' ){
  95           fprintf(stderr,"Error Logging in\n");
  96           return -1;
  97       }
  98
  99       sprintf(pc->outBuf,"USER %s\r\n",name);
 100       send(pc->s, &pc->outBuf,strlen(pc->outBuf),0);
 101       size =recv(pc->s,pc->inBuf,1024,0);
 102       memset(temp,0,1024);
 103       memcpy(temp,pc->inBuf,size);
 104       if( temp[0] != '+' ){
 105           fprintf(stderr,"Invalid User Name\n");
 106           return -1;
 107       }
 108
 109       memset(pc->outBuf,0,1024);
 110       sprintf(pc->outBuf,"PASS %s\r\n",pass);
 111       send(pc->s, pc->outBuf, strlen(pc->outBuf),0 );
 112       size =recv(pc->s,&pc->inBuf,1024,0);
 113       memset(temp,0,1024);
 114       memcpy(temp,pc->inBuf,size);
 115       if( temp[0] != '+' ){
 116           fprintf(stderr,"Incorrect Password\n");
 117           return -1;
 118       }
 119
 120       return 0;
 121 }
 122
 123 int pop3CheckMail(Pop3 pc){
 124     int size;
 125     char temp[1024];
 126     char *ptr;
 127     if( pc->connected == NOT_CONNECTED )
 128         return -1;
 129
 130      /* Find total number of messages in mail box */
 131      sprintf(pc->outBuf,"STAT\r\n");
 132      send(pc->s, pc->outBuf, strlen(pc->outBuf),0 );
 133      size =recv(pc->s,pc->inBuf,1024,0);
 134      memset(temp,0,1024);
 135      memcpy(temp,pc->inBuf,size);
 136      ptr = strtok(temp, " ");
 137      ptr = strtok( 0," ");
 138      pc->numOfMessages = atoi(ptr);
 139
 140      if( temp[0] != '+' ){
 141          perror("Error Reciving Stats");
 142          return -1;
 143      }
 144
 145      sprintf(pc->outBuf,"LAST\r\n");
 146      send(pc->s, pc->outBuf, strlen(pc->outBuf),0 );
 147      size =recv(pc->s,pc->inBuf,1024,0);
 148      memset(temp,0,1024);
 149      memcpy(temp,pc->inBuf,size);
 150      ptr = strtok(temp, " ");
 151      ptr = strtok( 0," ");
 152      pc->numOfUnreadMessages = pc->numOfMessages - atoi(ptr);
 153
 154      if( temp[0] != '+' ){
 155          perror("Error Reciving Stats");
 156          return -1;
 157      }
 158      return 1;
 159
 160 }
 161
 162 int  pop3GetTotalNumberOfMessages( Pop3 pc ){
 163      if( pc != 0 )
 164          return pc->numOfMessages;
 165      return -1;
 166 }
 167
 168 int  pop3GetNumberOfUnreadMessages( Pop3 pc ){
 169     if( pc != 0)
 170         return pc->numOfUnreadMessages;
 171     return -1;
 172 }
 173
 174 int pop3Quit(Pop3 pc){
 175     int size;
 176     if( pc->connected == NOT_CONNECTED )
 177         return -1;
 178     send(pc->s, "quit\r\n", 6,0 );
 179     size =recv(pc->s,&pc->inBuf,1024,0);
 180     pc->connected = NOT_CONNECTED;
 181     if(pc->s != 0)
 182         close(pc->s);
 183     return 0;
 184
 185 }