| 1 |
/* this is queries.c file, part of the libspopc library sources |
| 2 |
* copyright � 2002- Benoit Rouits <brouits@free.fr> |
| 3 |
* released under the terms of the GNU Lesser General Public Licence. |
| 4 |
* |
| 5 |
* libspopc offers simple API for a pop3 client. |
| 6 |
* See RFC 1725 for pop3 specifications. |
| 7 |
* more information on http://brouits.free.fr/libspopc/ |
| 8 |
* |
| 9 |
* This library is free software; you can redistribute it and/or |
| 10 |
* modify it under the terms of the GNU Lesser General Public |
| 11 |
* License as published by the Free Software Foundation; either |
| 12 |
* version 2.1 of the License, or (at your option) any later version. |
| 13 |
* |
| 14 |
* This library is distributed in the hope that it will be useful, |
| 15 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 |
* Lesser General Public License for more details. |
| 18 |
* |
| 19 |
* You should have received a copy of the GNU Lesser General Public |
| 20 |
* License along with this library; if not, write to the Free Software |
| 21 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 |
*/ |
| 23 |
|
| 24 |
#ifdef WIN32 |
| 25 |
#include <winsock.h> |
| 26 |
#else |
| 27 |
#include <sys/socket.h> |
| 28 |
#endif |
| 29 |
|
| 30 |
#include <stdlib.h> |
| 31 |
#include <stdio.h> |
| 32 |
#include <string.h> |
| 33 |
|
| 34 |
#include <sys/time.h> |
| 35 |
#include <sys/types.h> |
| 36 |
#ifndef WIN32 |
| 37 |
#include <unistd.h> |
| 38 |
#endif |
| 39 |
|
| 40 |
#include "libspopc.h" |
| 41 |
|
| 42 |
#ifdef USE_SSL |
| 43 |
|
| 44 |
int pop3_recv (pop3sock_t sock, char* buf, int len){ |
| 45 |
return sock->ssl?SSL_read(sock->ssl,buf,len):recv(sock->sock,buf,len,0); |
| 46 |
} |
| 47 |
|
| 48 |
int pop3_send (pop3sock_t sock, char* buf, int len){ |
| 49 |
return sock->ssl?SSL_write(sock->ssl,buf,len):send(sock->sock,buf,len,0); |
| 50 |
} |
| 51 |
|
| 52 |
#else |
| 53 |
|
| 54 |
int pop3_recv (pop3sock_t sock, char* buf, int len){ |
| 55 |
return recv(sock,buf,len,0); |
| 56 |
} |
| 57 |
|
| 58 |
int pop3_send (pop3sock_t sock, char* buf, int len){ |
| 59 |
return send(sock,buf,len,0); |
| 60 |
} |
| 61 |
|
| 62 |
#endif |
| 63 |
|
| 64 |
char* pop3_query(pop3sock_t sock, const char* query){ |
| 65 |
/* performs a simple pop query and returns server's <=512 bytes resp */ |
| 66 |
int r=0; |
| 67 |
int bytes=0; |
| 68 |
char* buf=NULL; |
| 69 |
|
| 70 |
r=pop3_send(sock,(char *)query,strlen(query)); |
| 71 |
if(r==-1){ /* send timeout reached */ |
| 72 |
perror("pop3_query.pop3_send"); |
| 73 |
return(NULL); |
| 74 |
} |
| 75 |
buf=(char*)malloc(POPBUF); /* 512B + EOS */ |
| 76 |
if(!buf){ |
| 77 |
perror("pop3_query.malloc"); |
| 78 |
return(NULL); |
| 79 |
} |
| 80 |
do { |
| 81 |
r=pop3_recv(sock, buf+bytes, POPBUF-bytes-1); |
| 82 |
if (r>0) |
| 83 |
bytes+=r; |
| 84 |
else { /* closed (0) or timeout reached (-1) */ |
| 85 |
free(buf); |
| 86 |
return NULL; |
| 87 |
} |
| 88 |
} while (bytes < 2 || (buf[bytes-2] != '\r' && buf[bytes-1] != '\n')); |
| 89 |
buf[bytes]='\0'; |
| 90 |
return(buf); |
| 91 |
} |
| 92 |
|
| 93 |
char* pop3_user(pop3sock_t sock, const char* name){ |
| 94 |
/* performs "USER" pop query and returns server's <512 bytes response */ |
| 95 |
char query[POPBUF]; /* total "USER ****your_name****\n" is <= 512 */ |
| 96 |
|
| 97 |
snprintf(query,POPBUF,"USER %s\r\n",name); |
| 98 |
return(pop3_query(sock,query)); |
| 99 |
} |
| 100 |
|
| 101 |
char* pop3_pass(pop3sock_t sock, const char* pw){ |
| 102 |
/* performs "PASS" pop query and return server's <=512 bytes response */ |
| 103 |
char query[POPBUF]; /* total "PASS ****your_pass****\n" is <=512 */ |
| 104 |
|
| 105 |
snprintf(query,POPBUF,"PASS %s\r\n",pw); |
| 106 |
return(pop3_query(sock,query)); |
| 107 |
} |
| 108 |
|
| 109 |
char* pop3_quit(pop3sock_t sock){ |
| 110 |
/* performs "QUIT" pop query and returns server's <=512 bytes response */ |
| 111 |
char query[]="QUIT\r\n"; |
| 112 |
|
| 113 |
return(pop3_query(sock,query)); |
| 114 |
} |
| 115 |
|
| 116 |
char* pop3_stat(pop3sock_t sock){ |
| 117 |
/* performs "STAT" pop query and returns server's <=512 bytes response */ |
| 118 |
char query[]="STAT\r\n"; |
| 119 |
|
| 120 |
return(pop3_query(sock,query)); |
| 121 |
} |
| 122 |
|
| 123 |
char* recv_rest(pop3sock_t sock, char* buf, int cursize, int bufsize){ |
| 124 |
/* recv rest of data through sock, given a cs pre-filled buffer sized of bs. |
| 125 |
* end of data is assumed when data has a "\r\n.\r\n" string |
| 126 |
* recv() is TCPBUFLEN bytes stepped, Warning: after calling this function, |
| 127 |
* buf must never be used again -not even for a free(buf)- since it may be |
| 128 |
* reallocated. Use the return value instead: |
| 129 |
* usage example: buf=recv_rest(sock,buf,cs,bs); free(buf); |
| 130 |
*/ |
| 131 |
char* ret = NULL; |
| 132 |
char* cur = NULL; /* current position ready to receive */ |
| 133 |
int total; /* total received */ |
| 134 |
if(!buf){ |
| 135 |
return(NULL); |
| 136 |
} |
| 137 |
total = cursize; |
| 138 |
cur = buf; |
| 139 |
if(cursize == bufsize){ |
| 140 |
ret=(char*)realloc(buf,bufsize+1); |
| 141 |
if(!ret){ |
| 142 |
perror("recv_rest.realloc"); |
| 143 |
free(buf); |
| 144 |
return NULL; |
| 145 |
} |
| 146 |
cur = buf = ret; |
| 147 |
} |
| 148 |
cur[total]='\0'; |
| 149 |
while(!dotline(buf)){ /* recv until "\r\n.\r\n" */ |
| 150 |
if (total >= (bufsize - TCPBUFLEN)){ |
| 151 |
ret = (char*)realloc(buf, (bufsize *=2) +1); |
| 152 |
} |
| 153 |
if(!ret){ |
| 154 |
perror("recv_rest.realloc"); |
| 155 |
free(buf); |
| 156 |
return NULL; |
| 157 |
} |
| 158 |
buf = ret; |
| 159 |
cur = buf + total; |
| 160 |
/* we use blocking sockets WITH TIMEOUT: no need for select() */ |
| 161 |
cursize=pop3_recv(sock, cur, TCPBUFLEN); |
| 162 |
if (cursize <= 0){ /* timeout (-1) or closed (0) */ |
| 163 |
perror("recv_rest.pop3_recv"); |
| 164 |
free(buf); |
| 165 |
return(NULL); |
| 166 |
} /* else, we got some bytes */ |
| 167 |
total+=cursize; |
| 168 |
cur[cursize] = '\0'; |
| 169 |
/* SUGGEST: we can strdup to a callback here */ |
| 170 |
} |
| 171 |
return(buf); |
| 172 |
} |
| 173 |
|
| 174 |
char* pop3_list(pop3sock_t sock, int id){ |
| 175 |
/* performs a "LIST" pop query and returns server's (long) response */ |
| 176 |
int r; |
| 177 |
char query[POPBUF]; /* total query "LIST ID\n" string is <=512 */ |
| 178 |
char* buf; |
| 179 |
|
| 180 |
if(id>0){ |
| 181 |
snprintf(query,POPBUF,"LIST %d\r\n",id); |
| 182 |
}else{ |
| 183 |
snprintf(query,POPBUF,"LIST\r\n"); |
| 184 |
} |
| 185 |
r=pop3_send(sock,query,strlen(query)); |
| 186 |
if(r==-1){ |
| 187 |
perror("pop3_list.pop3_send"); |
| 188 |
return(NULL); |
| 189 |
} |
| 190 |
/* now prepare a first short 512 bytes recv() */ |
| 191 |
/* it might be now enough for recv() from "LIST X" */ |
| 192 |
buf=(char*)malloc(POPBUF); /* 512 chars + '\0' */ |
| 193 |
if(!buf){ |
| 194 |
perror("pop3_list.malloc"); |
| 195 |
return(NULL); |
| 196 |
} |
| 197 |
r=pop3_recv(sock,buf,POPBUF-1); |
| 198 |
if(r <= 0){ /* close (0) or timeout (-1) */ |
| 199 |
perror("pop3_list.pop3_recv"); |
| 200 |
free(buf); |
| 201 |
return(NULL); |
| 202 |
} /* else, got some bytes */ |
| 203 |
buf[r]='\0'; |
| 204 |
if(id>0){/* +OK id size */ |
| 205 |
return(buf); /* 512 bytes are enough as say RFC 1939 */ |
| 206 |
} |
| 207 |
/* else : +OK X messages (YYY octets)\n id size\n... */ |
| 208 |
if(pop3_error(buf)){ |
| 209 |
return(buf); |
| 210 |
} |
| 211 |
return(recv_rest(sock,buf,r,POPBUF-1)); |
| 212 |
} |
| 213 |
|
| 214 |
char* pop3_retr(pop3sock_t sock, int id){ |
| 215 |
/* performs a "RETR" pop query and returns server's (long) response */ |
| 216 |
int r; |
| 217 |
char query[POPBUF]; |
| 218 |
char *buf; |
| 219 |
|
| 220 |
snprintf(query, POPBUF, "RETR %d\r\n", id); |
| 221 |
r=pop3_send(sock, query, strlen(query)); |
| 222 |
if(r==-1){ |
| 223 |
perror("pop3_retr.pop3_send"); |
| 224 |
return(NULL); |
| 225 |
} |
| 226 |
buf=(char*)malloc(POPBUF);/* 512 chars + '\0' */ |
| 227 |
if(!buf) { |
| 228 |
perror("pop3_retr.malloc"); |
| 229 |
return(NULL); |
| 230 |
} |
| 231 |
/* using blocking sockets WITH TIMEOUT: no need for select() */ |
| 232 |
r=pop3_recv(sock, buf, POPBUF-1); |
| 233 |
if(r <= 0){ /* timeout (-1) or close (0) */ |
| 234 |
perror("pop3_retr.pop3_recv"); |
| 235 |
free(buf); |
| 236 |
return(NULL); |
| 237 |
} /* else, got some bytes */ |
| 238 |
if(pop3_error(buf)){ |
| 239 |
buf[r] = '\0'; |
| 240 |
return(buf); /* 512 are enough as say RFC 1939 */ |
| 241 |
} |
| 242 |
return(recv_rest(sock, buf, r, POPBUF-1)); |
| 243 |
} |
| 244 |
|
| 245 |
char* pop3_dele(pop3sock_t sock, int id){ |
| 246 |
/* performs a "DELE" pop query and returns server's <=512 bytes response */ |
| 247 |
char query[POPBUF]; /* total "DELE X\n" string <=512 */ |
| 248 |
|
| 249 |
if(id<=0){ |
| 250 |
return(NULL); |
| 251 |
} |
| 252 |
snprintf(query,POPBUF,"DELE %d\r\n",id); |
| 253 |
return(pop3_query(sock,query)); |
| 254 |
} |
| 255 |
|
| 256 |
char* pop3_noop(pop3sock_t sock){ |
| 257 |
/* performs a "NOOP" pop query and returns server's <=512 bytes response */ |
| 258 |
char query[]="NOOP\r\n"; |
| 259 |
|
| 260 |
return(pop3_query(sock,query)); |
| 261 |
} |
| 262 |
|
| 263 |
char* pop3_rset(pop3sock_t sock){ |
| 264 |
/* performs a "RSET" pop query and returns server's <=512 bytes response */ |
| 265 |
char query[]="RSET\r\n"; |
| 266 |
|
| 267 |
return(pop3_query(sock,query)); |
| 268 |
} |
| 269 |
|
| 270 |
char* pop3_top(pop3sock_t sock, int id, int lines){ |
| 271 |
/* performs a "TOP" pop query and returns server's (long) response */ |
| 272 |
int r; |
| 273 |
char query[POPBUF]; /* total "TOP X Y\n" is <=512 */ |
| 274 |
char* buf; |
| 275 |
|
| 276 |
snprintf(query,POPBUF,"TOP %d %d\r\n",id,lines); |
| 277 |
r=pop3_send(sock,query,strlen(query)); |
| 278 |
if(r==-1){ |
| 279 |
perror("pop3_top.pop3_send"); |
| 280 |
return(NULL); |
| 281 |
} |
| 282 |
/* prepare first recv() of 512 bytes */ |
| 283 |
buf=(char*)malloc(POPBUF); /* 512 chars + '\0' */ |
| 284 |
if(!buf){ |
| 285 |
perror("pop3_top.malloc"); |
| 286 |
return(NULL); |
| 287 |
} |
| 288 |
r=pop3_recv(sock,buf,POPBUF-1); |
| 289 |
if(r <= 0){ /* timeout (-1) or close (0) */ |
| 290 |
perror("pop3_top.pop3_recv"); |
| 291 |
free(buf); |
| 292 |
return(NULL); |
| 293 |
} /* else, got some bytes */ |
| 294 |
buf[r]='\0'; |
| 295 |
if(pop3_error(buf)){ |
| 296 |
return(buf); /* 512 bytes are enough as say RFC 1939 */ |
| 297 |
} |
| 298 |
return(recv_rest(sock,buf,r,POPBUF-1)); |
| 299 |
} |
| 300 |
|
| 301 |
char* pop3_uidl(pop3sock_t sock, int id){ |
| 302 |
/* performs a "UIDL" pop query and returns server's (long) response */ |
| 303 |
int r; |
| 304 |
char query[POPBUF]; /* total "UIDL X\n" is <=512 */ |
| 305 |
char* buf; |
| 306 |
|
| 307 |
if(id>0){ |
| 308 |
snprintf(query,POPBUF,"UIDL %d\r\n",id); |
| 309 |
}else{ |
| 310 |
snprintf(query,POPBUF,"UIDL\r\n"); |
| 311 |
} |
| 312 |
r=pop3_send(sock,query,strlen(query)); |
| 313 |
if(r==-1){ |
| 314 |
perror("pop3_uidl.pop3_send"); |
| 315 |
return(NULL); |
| 316 |
} |
| 317 |
/* prepare first 512 bytes for recv() */ |
| 318 |
/* i hope this is also enough for the 'one line' short response */ |
| 319 |
buf=(char*)malloc(POPBUF); /* 512 chars + '\0' */ |
| 320 |
if(!buf){ |
| 321 |
perror("pop3_uidl.malloc"); |
| 322 |
return(NULL); |
| 323 |
} |
| 324 |
memset(buf,0,POPBUF); |
| 325 |
r=pop3_recv(sock,buf,POPBUF-1); |
| 326 |
if (r <= 0){ /* timeout (-1) or close (0) */ |
| 327 |
perror("pop3_uidl.pop3_recv"); |
| 328 |
free(buf); |
| 329 |
return(NULL); |
| 330 |
} /* else, got some bytes */ |
| 331 |
buf[r]='\0'; |
| 332 |
if(id>0){/* +OK id sig */ |
| 333 |
/* return the short buf, error or not */ |
| 334 |
return(buf); /* 512 are enough as say RFC 1939 */ |
| 335 |
} |
| 336 |
/* else : +OK\n id sig\nid sig\nid sig\n... */ |
| 337 |
if(pop3_error(buf)){ |
| 338 |
return(buf); /* hope error msg were <=512 bytes */ |
| 339 |
} |
| 340 |
return(recv_rest(sock,buf,r,POPBUF-1)); |
| 341 |
} |
| 342 |
|
| 343 |
char* pop3_apop(pop3sock_t sock, const char* name, const char* digest){ |
| 344 |
/* performs a "APOP" secure query and returns server's <=512 bytes response */ |
| 345 |
char query[POPBUF]; /* total "APOP name digest\r\n" is <=512 */ |
| 346 |
|
| 347 |
snprintf(query,POPBUF,"APOP %s %s\r\n",name,digest); |
| 348 |
return(pop3_query(sock,query)); |
| 349 |
} |
| 350 |
|
Parent Directory
| 
Revision Log