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/* this is queries.c file, 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. |
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* |
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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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* |
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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 |
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* 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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#ifdef WIN32 |
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#include <winsock.h> |
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#else |
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#include <sys/socket.h> |
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#endif |
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|
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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|
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#include <sys/time.h> |
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#include <sys/types.h> |
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#ifndef WIN32 |
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#include <unistd.h> |
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#endif |
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|
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#include "libspopc.h" |
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|
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#ifdef USE_SSL |
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|
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DLLIMPORT int pop3_recv (pop3sock_t sock, char* buf, int len){ |
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return sock->ssl?SSL_read(sock->ssl,buf,len):recv(sock->sock,buf,len,0); |
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} |
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|
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DLLIMPORT int pop3_send (pop3sock_t sock, char* buf, int len){ |
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return sock->ssl?SSL_write(sock->ssl,buf,len):send(sock->sock,buf,len,0); |
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} |
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|
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#else |
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|
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DLLIMPORT int pop3_recv (pop3sock_t sock, char* buf, int len){ |
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return recv(sock,buf,len,0); |
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} |
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|
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DLLIMPORT int pop3_send (pop3sock_t sock, char* buf, int len){ |
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return send(sock,buf,len,0); |
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} |
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|
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#endif |
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|
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DLLIMPORT char* pop3_query(pop3sock_t sock, const char* query){ |
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/* performs a simple pop query and returns server's <=512 bytes resp */ |
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int r=0; |
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int bytes=0; |
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char* buf=NULL; |
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|
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r=pop3_send(sock,(char *)query,strlen(query)); |
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if(r==-1){ /* send timeout reached */ |
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perror("pop3_query.pop3_send"); |
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return(NULL); |
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} |
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buf=(char*)malloc(POPBUF); /* 512B + EOS */ |
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if(!buf){ |
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perror("pop3_query.malloc"); |
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return(NULL); |
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} |
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do { |
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r=pop3_recv(sock, buf+bytes, POPBUF-bytes-1); |
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if (r>0) |
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bytes+=r; |
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else { /* closed (0) or timeout reached (-1) */ |
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free(buf); |
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return NULL; |
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} |
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} while (bytes < 2 || (buf[bytes-2] != '\r' && buf[bytes-1] != '\n')); |
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buf[bytes]='\0'; |
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return(buf); |
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} |
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|
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DLLIMPORT char* pop3_user(pop3sock_t sock, const char* name){ |
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/* performs "USER" pop query and returns server's <512 bytes response */ |
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char query[POPBUF]; /* total "USER ****your_name****\n" is <= 512 */ |
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|
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snprintf(query,POPBUF,"USER %s\r\n",name); |
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return(pop3_query(sock,query)); |
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} |
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|
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DLLIMPORT char* pop3_pass(pop3sock_t sock, const char* pw){ |
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/* performs "PASS" pop query and return server's <=512 bytes response */ |
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char query[POPBUF]; /* total "PASS ****your_pass****\n" is <=512 */ |
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|
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snprintf(query,POPBUF,"PASS %s\r\n",pw); |
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return(pop3_query(sock,query)); |
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} |
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|
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DLLIMPORT char* pop3_quit(pop3sock_t sock){ |
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/* performs "QUIT" pop query and returns server's <=512 bytes response */ |
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char query[]="QUIT\r\n"; |
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|
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return(pop3_query(sock,query)); |
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} |
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|
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DLLIMPORT char* pop3_stat(pop3sock_t sock){ |
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/* performs "STAT" pop query and returns server's <=512 bytes response */ |
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char query[]="STAT\r\n"; |
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|
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return(pop3_query(sock,query)); |
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} |
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|
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char* recv_rest(pop3sock_t sock, char* buf, int cursize, int bufsize){ |
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/* recv rest of data through sock, given a cs pre-filled buffer sized of bs. |
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* end of data is assumed when data has a "\r\n.\r\n" string |
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* recv() is TCPBUFLEN bytes stepped, Warning: after calling this function, |
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* buf must never be used again -not even for a free(buf)- since it may be |
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* reallocated. Use the return value instead: |
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* usage example: buf=recv_rest(sock,buf,cs,bs); free(buf); |
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*/ |
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char* ret = NULL; |
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char* cur = NULL; /* current position ready to receive */ |
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int total; /* total received */ |
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if(!buf){ |
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return(NULL); |
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} |
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total = cursize; |
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cur = buf; |
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if(cursize == bufsize){ |
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ret=(char*)realloc(buf,bufsize+1); |
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if(!ret){ |
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perror("recv_rest.realloc"); |
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free(buf); |
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return NULL; |
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} |
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cur = buf = ret; |
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} |
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cur[total]='\0'; |
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while(!dotline(buf, total)){ /* recv until "\r\n.\r\n" */ |
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if (total >= (bufsize - TCPBUFLEN)){ |
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ret = (char*)realloc(buf, (bufsize *=2) +1); |
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} |
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if(!ret){ |
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perror("recv_rest.realloc"); |
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free(buf); |
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return NULL; |
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} |
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buf = ret; |
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cur = buf + total; |
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/* we use blocking sockets WITH TIMEOUT: no need for select() */ |
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cursize=pop3_recv(sock, cur, TCPBUFLEN); |
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if (cursize <= 0){ /* timeout (-1) or closed (0) */ |
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perror("recv_rest.pop3_recv"); |
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free(buf); |
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return(NULL); |
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} /* else, we got some bytes */ |
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total+=cursize; |
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cur[cursize] = '\0'; |
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/* SUGGEST: we can strdup to a callback here */ |
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} |
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return(buf); |
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} |
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|
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DLLIMPORT char* pop3_list(pop3sock_t sock, int id){ |
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/* performs a "LIST" pop query and returns server's (long) response */ |
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int r; |
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char query[POPBUF]; /* total query "LIST ID\n" string is <=512 */ |
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char* buf; |
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|
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if(id>0){ |
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snprintf(query,POPBUF,"LIST %d\r\n",id); |
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}else{ |
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snprintf(query,POPBUF,"LIST\r\n"); |
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} |
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r=pop3_send(sock,query,strlen(query)); |
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if(r==-1){ |
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perror("pop3_list.pop3_send"); |
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return(NULL); |
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} |
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/* now prepare a first short 512 bytes recv() */ |
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/* it might be now enough for recv() from "LIST X" */ |
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buf=(char*)malloc(POPBUF); /* 512 chars + '\0' */ |
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if(!buf){ |
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perror("pop3_list.malloc"); |
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return(NULL); |
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} |
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r=pop3_recv(sock,buf,POPBUF-1); |
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if(r <= 0){ /* close (0) or timeout (-1) */ |
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perror("pop3_list.pop3_recv"); |
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free(buf); |
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return(NULL); |
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} /* else, got some bytes */ |
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buf[r]='\0'; |
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if(id>0){/* +OK id size */ |
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return(buf); /* 512 bytes are enough as say RFC 1939 */ |
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} |
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/* else : +OK X messages (YYY octets)\n id size\n... */ |
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if(pop3_error(buf)){ |
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return(buf); |
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} |
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return(recv_rest(sock,buf,r,POPBUF-1)); |
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} |
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|
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DLLIMPORT char* pop3_retr(pop3sock_t sock, int id){ |
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/* performs a "RETR" pop query and returns server's (long) response */ |
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int r; |
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char query[POPBUF]; |
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char *buf; |
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|
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snprintf(query, POPBUF, "RETR %d\r\n", id); |
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r=pop3_send(sock, query, strlen(query)); |
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if(r==-1){ |
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perror("pop3_retr.pop3_send"); |
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return(NULL); |
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} |
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buf=(char*)malloc(POPBUF);/* 512 chars + '\0' */ |
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if(!buf) { |
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perror("pop3_retr.malloc"); |
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return(NULL); |
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} |
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/* using blocking sockets WITH TIMEOUT: no need for select() */ |
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r=pop3_recv(sock, buf, POPBUF-1); |
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if(r <= 0){ /* timeout (-1) or close (0) */ |
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perror("pop3_retr.pop3_recv"); |
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free(buf); |
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return(NULL); |
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} /* else, got some bytes */ |
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if(pop3_error(buf)){ |
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buf[r] = '\0'; |
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return(buf); /* 512 are enough as say RFC 1939 */ |
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} |
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return(recv_rest(sock, buf, r, POPBUF-1)); |
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} |
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|
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DLLIMPORT char* pop3_dele(pop3sock_t sock, int id){ |
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/* performs a "DELE" pop query and returns server's <=512 bytes response */ |
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char query[POPBUF]; /* total "DELE X\n" string <=512 */ |
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|
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if(id<=0){ |
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return(NULL); |
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} |
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snprintf(query,POPBUF,"DELE %d\r\n",id); |
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return(pop3_query(sock,query)); |
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} |
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|
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DLLIMPORT char* pop3_noop(pop3sock_t sock){ |
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/* performs a "NOOP" pop query and returns server's <=512 bytes response */ |
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char query[]="NOOP\r\n"; |
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|
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return(pop3_query(sock,query)); |
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} |
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|
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DLLIMPORT char* pop3_rset(pop3sock_t sock){ |
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/* performs a "RSET" pop query and returns server's <=512 bytes response */ |
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char query[]="RSET\r\n"; |
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|
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return(pop3_query(sock,query)); |
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} |
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|
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DLLIMPORT char* pop3_top(pop3sock_t sock, int id, int lines){ |
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/* performs a "TOP" pop query and returns server's (long) response */ |
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int r; |
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char query[POPBUF]; /* total "TOP X Y\n" is <=512 */ |
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char* buf; |
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|
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snprintf(query,POPBUF,"TOP %d %d\r\n",id,lines); |
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r=pop3_send(sock,query,strlen(query)); |
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if(r==-1){ |
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perror("pop3_top.pop3_send"); |
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return(NULL); |
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} |
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/* prepare first recv() of 512 bytes */ |
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buf=(char*)malloc(POPBUF); /* 512 chars + '\0' */ |
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if(!buf){ |
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perror("pop3_top.malloc"); |
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return(NULL); |
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} |
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r=pop3_recv(sock,buf,POPBUF-1); |
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if(r <= 0){ /* timeout (-1) or close (0) */ |
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perror("pop3_top.pop3_recv"); |
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free(buf); |
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return(NULL); |
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} /* else, got some bytes */ |
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buf[r]='\0'; |
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if(pop3_error(buf)){ |
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return(buf); /* 512 bytes are enough as say RFC 1939 */ |
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} |
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return(recv_rest(sock,buf,r,POPBUF-1)); |
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} |
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|
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DLLIMPORT char* pop3_uidl(pop3sock_t sock, int id){ |
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/* performs a "UIDL" pop query and returns server's (long) response */ |
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int r; |
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char query[POPBUF]; /* total "UIDL X\n" is <=512 */ |
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char* buf; |
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|
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if(id>0){ |
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snprintf(query,POPBUF,"UIDL %d\r\n",id); |
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}else{ |
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snprintf(query,POPBUF,"UIDL\r\n"); |
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} |
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r=pop3_send(sock,query,strlen(query)); |
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if(r==-1){ |
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perror("pop3_uidl.pop3_send"); |
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return(NULL); |
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} |
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/* prepare first 512 bytes for recv() */ |
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/* i hope this is also enough for the 'one line' short response */ |
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buf=(char*)malloc(POPBUF); /* 512 chars + '\0' */ |
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if(!buf){ |
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perror("pop3_uidl.malloc"); |
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return(NULL); |
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} |
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memset(buf,0,POPBUF); |
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r=pop3_recv(sock,buf,POPBUF-1); |
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if (r <= 0){ /* timeout (-1) or close (0) */ |
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perror("pop3_uidl.pop3_recv"); |
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free(buf); |
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return(NULL); |
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} /* else, got some bytes */ |
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buf[r]='\0'; |
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if(id>0){/* +OK id sig */ |
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/* return the short buf, error or not */ |
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return(buf); /* 512 are enough as say RFC 1939 */ |
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} |
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/* else : +OK\n id sig\nid sig\nid sig\n... */ |
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if(pop3_error(buf)){ |
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return(buf); /* hope error msg were <=512 bytes */ |
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} |
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return(recv_rest(sock,buf,r,POPBUF-1)); |
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} |
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|
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DLLIMPORT char* pop3_apop(pop3sock_t sock, const char* name, const char* digest){ |
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/* performs a "APOP" secure query and returns server's <=512 bytes response */ |
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char query[POPBUF]; /* total "APOP name digest\r\n" is <=512 */ |
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|
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snprintf(query,POPBUF,"APOP %s %s\r\n",name,digest); |
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return(pop3_query(sock,query)); |
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} |
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