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/* this is objects.c, part of the libspopc library sources |
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* copyright © 2002- Benoit Rouits <brouits@free.fr> |
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* released under the terms of the GNU Lesser General Public Licence. |
| 4 |
* |
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* libspopc offers simple API for a pop3 client. |
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* See RFC 1725 for pop3 specifications. |
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* more information on http://herewe.servebeer.com/libspopc/ |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 |
* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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#include <stdlib.h> |
| 25 |
#include <string.h> |
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#include <sys/types.h> |
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|
| 28 |
#ifdef WIN32 |
| 29 |
#include <winsock.h> |
| 30 |
#else |
| 31 |
#include <sys/socket.h> |
| 32 |
#include <netdb.h> |
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#endif |
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|
| 35 |
#include "libspopc.h" |
| 36 |
|
| 37 |
/*************************************** |
| 38 |
* high-level methods for a simple mua * |
| 39 |
***************************************/ |
| 40 |
|
| 41 |
char* popbegin(const char* servername, const char* user, const char* pass, popsession** sp){ |
| 42 |
/* prepares, connect and get lists of messages stored on pop server */ |
| 43 |
/* you must give a valid servername, user and pass */ |
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/* returns an error message if a problem occurs, else NULL */ |
| 45 |
char* resp=NULL; |
| 46 |
char* err=NULL; |
| 47 |
char *hostname, *ptr_port; |
| 48 |
int nport; |
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popsession* s = NULL; |
| 50 |
|
| 51 |
if(!(servername && user && pass)){ |
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err=strdup("popbegin: some NULL args !"); |
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goto error; |
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} |
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s=(popsession*)malloc(sizeof(popsession)); |
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if(!s){ |
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err=strdup("popbegin.malloc: failed\n"); |
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goto error; |
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} |
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/* basic default construction */ |
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s->sock=BAD_SOCK; |
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s->connection=NULL; |
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s->server=NULL; |
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s->list=NULL; |
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s->uidl=NULL; |
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s->bytes=-1; |
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s->last=-1; |
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s->num=-1; |
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s->del=0; /* no deletion (by default) at this time */ |
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s->sync=1; /* this is sync'ed at this time (no cnx yet) */ |
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|
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s->server=(struct hostent*)malloc(sizeof(struct hostent)); |
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if(!(s->server)){ |
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err=strdup("popbegin.malloc: failed\n"); |
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goto error; |
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} |
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s->connection=(struct sockaddr_in*)malloc(sizeof(struct sockaddr_in)); |
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if(!(s->connection)){ |
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err=strdup("popbegin.malloc: failed\n"); |
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goto error; |
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} |
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hostname = strdup (servername); |
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if (!hostname) { |
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err=strdup("popbegin.strdup: failed\n"); /* ahem... */ |
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goto error; |
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} |
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ptr_port = strchr (hostname, ':'); |
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if (!ptr_port) |
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nport = 110; |
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else { |
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*ptr_port = 0; |
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nport = (int) strtoul (++ptr_port, NULL, 10); |
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if (!nport) |
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nport = 110; |
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} |
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s->sock=pop3_prepare(hostname,nport,s->connection,s->server); |
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free (hostname); |
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if(s->sock==BAD_SOCK){ |
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err=strdup("popbegin.pop3_prepare: failed\n"); |
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goto error; |
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} |
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resp=pop3_connect(s->sock,s->connection); |
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if(!resp){ |
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err=strdup("popbegin.pop3_connect: failed\n"); |
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goto error; |
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} |
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free(resp); |
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resp=pop3_user(s->sock,user); |
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if((!resp) || pop3_error(resp)){ |
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err=resp?resp:strdup("popbegin.pop3_user: failed\n"); |
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goto error; |
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} |
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free(resp); |
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resp=pop3_pass(s->sock,pass); |
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if((!resp) || pop3_error(resp)){ |
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err=resp?resp:strdup("popbegin.pop3_pass: failed\n"); |
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goto error; |
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} |
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free(resp); |
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resp=pop3_stat(s->sock); |
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if((!resp) || pop3_error(resp)){ |
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err=resp?resp:strdup("popbegin.pop3_stat: failed\n"); |
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goto error; |
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} |
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s->bytes=stat2bytes(resp); |
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s->num=stat2num(resp); |
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s->last=stat2num(resp); /* safe here: we did not delete anything */ |
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free(resp); |
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resp=pop3_list(s->sock,0); |
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if((!resp) || pop3_error(resp)){ |
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err=resp?resp:strdup("popbegin.pop3_list: failed\n"); |
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goto error; |
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} |
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s->list=list2array(resp); |
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free(resp); |
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resp=pop3_uidl(s->sock,0); |
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if((!resp) || pop3_error(resp)){ |
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err=resp?resp:strdup("popbegin.pop3_uidl: failed\n"); |
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goto error; |
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} |
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s->uidl=uidl2array(resp); |
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s->del=0; |
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(*sp)=s; |
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free(resp); |
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return (NULL); |
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|
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error: |
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if (s) { |
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if (s->sock != BAD_SOCK) |
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{ |
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pop3_disconnect (s->sock, s->server); |
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free(s->server); |
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} |
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free (s->connection); |
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free(s); |
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} |
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return (err); |
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} |
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|
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char* popgethead(popsession* session, int id){ |
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/* returns the header of a message id between 1 and last or NULL if bad id or error */ |
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char* resp; |
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char* msg; |
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if(!session){ |
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return(NULL); |
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} |
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if((id > session->last) || (id < 1)){ |
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return(NULL); |
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} |
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resp=pop3_top(session->sock,id,0); /* 0 means only header */ |
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if((!resp) || pop3_error(resp)){ |
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if(resp){ |
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free(resp); |
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} |
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return(NULL); |
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} |
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msg=retr2msg(resp); |
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if(!msg){ |
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msg=resp; |
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}else{ |
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free(resp); |
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} |
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return(msg); |
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} |
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|
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char* popgetmsg(popsession* session, int id){ |
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/* returns a message id between 1 to last or NULL if bad id or error */ |
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char* resp=NULL; |
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char* msg=NULL; |
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|
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if(!session){ |
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return(NULL); |
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} |
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if((id > session->last) || (id < 1)){ |
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return(NULL); |
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} |
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resp=pop3_retr(session->sock,id); |
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if((!resp) || pop3_error(resp)){ |
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free(resp); |
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return(NULL); |
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} |
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msg=retr2msg(resp); |
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if(!msg){ |
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msg=resp; |
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}else{ |
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free(resp); |
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} |
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if(session->del){ |
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popdelmsg(session, id); |
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} |
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return(msg); |
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} |
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|
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int popdelmsg(popsession* session, int id){ |
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/* deletes a message 'id' on pop server */ |
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/* returns -1 if no deletion (server error), 0 else */ |
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/* sets session->sync to 0 if last id unsync-ed , 1 if OK */ |
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char* resp; |
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int ret; |
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if(!session){ |
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return -1; |
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} |
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if((id > session->last) || (id < 1)){ |
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return -1; |
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} |
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/* actualy delete the email */ |
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resp=pop3_dele(session->sock,id); |
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if((!resp) || pop3_error(resp)){ |
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free(resp); |
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return -1; |
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} |
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free(resp); |
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resp=pop3_stat(session->sock); |
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if((!resp) || pop3_error(resp)){ |
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session->sync=0; |
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return -1; |
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} |
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ret = stat2bytes(resp); |
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if (ret < 0) |
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session->sync=0; |
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|
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else |
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session->bytes=ret; |
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ret = stat2num(resp); |
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if (ret < 0) |
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session->sync=0; |
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else |
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session->num=ret; |
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free(resp); |
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ret=poplast(session); /* check actual last id */ |
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if (ret < 0){ |
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session->sync=0; |
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return -1; |
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} |
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session->last=ret; |
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|
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/* no more message of this id*/ |
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session->list[id]=0; |
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free(session->uidl[id]); |
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session->uidl[id]=NULL; |
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session->sync=1; |
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return 0; |
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} |
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|
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int popcancel(popsession* session){ |
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/* cancel all previous deletions on pop server */ |
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/* returns -1 if server error, 0 else */ |
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char* resp; |
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int ret; |
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|
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if(!session){ |
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return(-1); |
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} |
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resp=pop3_rset(session->sock); |
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if((!resp) || pop3_error(resp)){ |
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free(resp); |
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return(-1); |
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} |
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free(resp); |
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resp=pop3_stat(session->sock); |
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if((!resp) || pop3_error(resp)){ |
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session->sync=0; |
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return(-1); |
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} |
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/* sync number of bytes */ |
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ret = stat2bytes(resp); |
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if (ret < 0) |
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session->sync=0; |
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else |
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session->bytes=ret; |
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/* sync number of messages */ |
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ret = stat2num(resp); |
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if (ret < 0) |
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session->sync=0; |
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else |
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session->num=ret; |
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/* sync last mail id */ |
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/* safe to use stat2num here since we cancel */ |
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ret = stat2num(resp); |
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if (ret < 0) |
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session->sync=0; |
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else |
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session->last=ret; |
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free(resp); |
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resp=pop3_list(session->sock,0); |
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if((!resp) || pop3_error(resp)){ |
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session->sync=0; |
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return -1; |
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} |
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freelistarray(session->list); |
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session->list=list2array(resp); |
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free(resp); |
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resp=pop3_uidl(session->sock,0); |
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if((!resp) || pop3_error(resp)){ |
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session->sync=0; |
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return -1; |
| 317 |
} |
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freeuidlarray(session->uidl); |
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session->uidl=uidl2array(resp); |
| 320 |
free(resp); |
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session->sync=1; |
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return 0; |
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} |
| 324 |
|
| 325 |
void popend(popsession* session){ |
| 326 |
/* quit and destroys pop session */ |
| 327 |
int i; |
| 328 |
char* resp; |
| 329 |
|
| 330 |
if(!session) |
| 331 |
return; |
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resp=pop3_quit(session->sock); |
| 333 |
free(resp); |
| 334 |
pop3_disconnect(session->sock, session->server); |
| 335 |
free(session->server); |
| 336 |
free(session->connection); |
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free(session->list); |
| 338 |
for(i=0;i<=session->last;i++){ |
| 339 |
free(session->uidl[i]); |
| 340 |
} |
| 341 |
free(session->uidl); |
| 342 |
free(session); |
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return; |
| 344 |
} |
| 345 |
|
| 346 |
int popnum(popsession* session){ |
| 347 |
/* returns the number of current (non-deleted) messages */ |
| 348 |
char* r=NULL; |
| 349 |
int n; |
| 350 |
|
| 351 |
if(!session) |
| 352 |
return -1; |
| 353 |
r=pop3_stat(session->sock); |
| 354 |
if(pop3_error(r)) { |
| 355 |
free(r); |
| 356 |
return -1; /* error (timeout, etc..) */ |
| 357 |
} |
| 358 |
n=stat2num(r); |
| 359 |
free(r); |
| 360 |
return(n); |
| 361 |
} |
| 362 |
|
| 363 |
int poplast(popsession* session){ |
| 364 |
/* return the id of the last downloadable (non-deleted) message */ |
| 365 |
/* thanks to Francesco Gennai <francesco.gennai@isti.cnr.it> */ |
| 366 |
int i=0; |
| 367 |
char* lines=NULL; |
| 368 |
char* p=NULL; |
| 369 |
|
| 370 |
if(!session) |
| 371 |
return -1; |
| 372 |
lines=pop3_list(session->sock, 0); /* 0 means 'all' */ |
| 373 |
if(pop3_error(lines)) { |
| 374 |
free(lines); |
| 375 |
return -1; /* error (timeout, etc..) */ |
| 376 |
} |
| 377 |
p=lines; |
| 378 |
p=nextline(p); /* skip +OK */ |
| 379 |
while (p[0]!='.'){ /* dot means list terminated */ |
| 380 |
i = atoi(p); /* first number is the id */ |
| 381 |
p=nextline(p); |
| 382 |
} |
| 383 |
/* i is now the greatest id */ |
| 384 |
free(lines); |
| 385 |
return(i); |
| 386 |
} |
| 387 |
|
| 388 |
int popchkmsg(popsession* session, int id) { |
| 389 |
/* check if the message 'id' is accessible in the current session */ |
| 390 |
/* thanks to Francesco Gennai <francesco.gennai@isti.cnr.it> */ |
| 391 |
if (popmsguid(session, id)) return 1; /* anything but 0 */ |
| 392 |
return 0; |
| 393 |
} |
| 394 |
|
| 395 |
/* re-synchronize the session object from the server */ |
| 396 |
int popsync(popsession* session) { |
| 397 |
char* resp; |
| 398 |
int ret; |
| 399 |
|
| 400 |
if(!session){ |
| 401 |
return(-1); |
| 402 |
} |
| 403 |
resp=pop3_stat(session->sock); |
| 404 |
if((!resp) || pop3_error(resp)){ |
| 405 |
session->sync=0; |
| 406 |
return(-1); |
| 407 |
} |
| 408 |
session->bytes=stat2bytes(resp); |
| 409 |
session->num=stat2num(resp); |
| 410 |
ret=poplast(session); /* check actual last id */ |
| 411 |
if (ret < 0){ |
| 412 |
session->sync=0; |
| 413 |
return(-1); |
| 414 |
} |
| 415 |
session->last=ret; |
| 416 |
free(resp); |
| 417 |
resp=pop3_list(session->sock,0); |
| 418 |
if((!resp) || pop3_error(resp)){ |
| 419 |
session->sync=0; |
| 420 |
return(-1); |
| 421 |
} |
| 422 |
freelistarray(session->list); |
| 423 |
session->list=list2array(resp); |
| 424 |
free(resp); |
| 425 |
resp=pop3_uidl(session->sock,0); |
| 426 |
if((!resp) || pop3_error(resp)){ |
| 427 |
session->sync=0; |
| 428 |
return(-1); |
| 429 |
} |
| 430 |
freeuidlarray(session->uidl); |
| 431 |
session->uidl=uidl2array(resp); |
| 432 |
free(resp); |
| 433 |
session->sync=1; |
| 434 |
return(0); |
| 435 |
} |
| 436 |
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