diff options
Diffstat (limited to 'pop3.c')
| -rw-r--r-- | pop3.c | 180 |
1 files changed, 49 insertions, 131 deletions
@@ -17,19 +17,6 @@ #include "socket.h" #include "fetchmail.h" -#ifdef HAVE_PROTOTYPES -/* prototypes for internal functions */ -int POP3_sendUIDL (int num, int socket, char **cp); -int POP3_BuildDigest (char *buf, struct hostrec *options); -#endif - - -/********************************************************************* - - Method declarations for POP3 - - *********************************************************************/ - int pop3_ok (argbuf,socket) /* parse command response */ char *argbuf; @@ -80,41 +67,54 @@ char *greeting; #if defined(HAVE_APOP_SUPPORT) /* build MD5 digest from greeting timestamp + password */ if (queryctl->protocol == P_APOP) - if (POP3_BuildDigest(greeting,queryctl) != 0) { + { + char *start,*end; + char *msg; + + /* find start of timestamp */ + for (start = greeting; *start != 0 && *start != '<'; start++) + continue; + if (*start == 0) { + fprintf(stderr,"Required APOP timestamp not found in greeting\n"); + return(PS_AUTHFAIL); + } + + /* find end of timestamp */ + for (end = start; *end != 0 && *end != '>'; end++) + continue; + if (*end == 0 || (end - start - 1) == 1) { + fprintf(stderr,"Timestamp syntax error in greeting\n"); return(PS_AUTHFAIL); } + + /* copy timestamp and password into digestion buffer */ + msg = (char *) malloc((end-start-1) + strlen(queryctl->password) + 1); + *(++end) = 0; + strcpy(msg,start); + strcat(msg,queryctl->password); + + strcpy(queryctl->digest, MD5Digest(msg)); + free(msg); + } #endif /* HAVE_APOP_SUPPORT */ switch (queryctl->protocol) { case P_POP3: - SockPrintf(socket,"USER %s\r\n",queryctl->remotename); - if (outlevel == O_VERBOSE) - fprintf(stderr,"> USER %s\n",queryctl->remotename); + gen_send(socket,"USER %s", queryctl->remotename); if (pop3_ok(buf,socket) != 0) goto badAuth; if (queryctl->rpopid[0]) - { - SockPrintf(socket, "RPOP %s\r\n", queryctl->rpopid); - if (outlevel == O_VERBOSE) - fprintf(stderr,"> RPOP %s %s\n",queryctl->rpopid); - } + gen_send(socket, "RPOP %s", queryctl->rpopid); else - { - SockPrintf(socket,"PASS %s\r\n",queryctl->password); - if (outlevel == O_VERBOSE) - fprintf(stderr,"> PASS password\n"); - } + gen_send(socket, "PASS %s", queryctl->password); if (pop3_ok(buf,socket) != 0) goto badAuth; break; #if defined(HAVE_APOP_SUPPORT) case P_APOP: - SockPrintf(socket,"APOP %s %s\r\n", - queryctl->remotename, queryctl->digest); - if (outlevel == O_VERBOSE) - fprintf(stderr,"> APOP %s %s\n",queryctl->remotename, queryctl->digest); + gen_send(socket,"APOP %s %s", queryctl->remotename, queryctl->digest); if (pop3_ok(buf,socket) != 0) goto badAuth; break; @@ -132,9 +132,6 @@ char *greeting; badAuth: if (outlevel > O_SILENT && outlevel < O_VERBOSE) fprintf(stderr,"%s\n",buf); - else - ; /* say nothing */ - return(PS_ERROR); } @@ -176,13 +173,15 @@ int *firstp; ok = pop3_ok(buf,socket); if (ok == 0 && sscanf(buf, "%d", firstp) == 0) return(PS_ERROR); + use_uidl = (ok != 0); /* otherwise, if we have a stored last ID for this host, * send UIDL and search the returned list for it */ if (use_uidl && queryctl->lastid[0]) { - if ((ok = POP3_sendUIDL(-1, socket, 0)) == 0) { + gen_send("UIDL"); + if ((ok = pop3_ok(buf, socket)) == 0) { while (SockGets(socket, buf, sizeof(buf)) >= 0) { if (outlevel == O_VERBOSE) fprintf(stderr,"%s\n",buf); @@ -223,12 +222,22 @@ int socket; struct hostrec *queryctl; int number; { - char *cp; - int ok = 0; + if (!use_uidl) + return(0); + else + { + char buf [POPBUFSIZE+1]; + int ok; - if (use_uidl && (ok = POP3_sendUIDL(number, socket, &cp)) == 0) - (void) strcpy(queryctl->lastid, cp); - return(ok); + gen_send(socket, "UIDL %d", number); + if ((ok = pop3_ok(socket, buf)) != 0) + return(ok); + else + { + sscanf(buf, "%*d %s", queryctl->lastid); + return(0); + } + } } static struct method pop3 = @@ -259,95 +268,4 @@ struct hostrec *queryctl; return(do_protocol(queryctl, &pop3)); } -/****************************************************************** - function: POP3_sendUIDL - description: send the UIDL command to the server, - - arguments: - num number of message to query (may be -1) - - ret. value: zero if success, else status code. - globals: SockPrintf, pop3_ok. - calls: reads outlevel. - *****************************************************************/ - -int POP3_sendUIDL (num, socket, cp) -int num; -int socket; -char **cp; -{ - int ok; - char buf [POPBUFSIZE]; - static char id[IDLEN]; - - (void) strcpy(buf, "UIDL\r\n"); - if (num > -1) - (void) sprintf(buf, "UIDL %d\r\n", num); - - SockPrintf(socket, buf); - if (outlevel == O_VERBOSE) - fprintf(stderr,"> %s", buf); - - ok = pop3_ok(buf,socket); - if (ok != 0 && outlevel > O_SILENT) - fprintf(stderr,"Server says '%s' to UIDL command.\n",buf); - - if (cp) { - sscanf(buf, "%*d %s\n", id); - *cp = id; - } - return(ok); -} - - -/****************************************************************** - function: POP3_BuildDigest - description: Construct the MD5 digest for the current session, - using the user-specified password, and the time - stamp in the POP3 greeting. - arguments: - buf greeting string - queryctl merged options record. - - ret. value: zero on success, nonzero if no timestamp found in - greeting. - globals: none. - calls: MD5Digest. - *****************************************************************/ - -#if defined(HAVE_APOP_SUPPORT) -POP3_BuildDigest (buf,queryctl) -char *buf; -struct hostrec *queryctl; -{ - char *start,*end; - char *msg; - - /* find start of timestamp */ - for (start = buf; *start != 0 && *start != '<'; start++) - ; - if (*start == 0) { - fprintf(stderr,"Required APOP timestamp not found in greeting\n"); - return(-1); - } - - /* find end of timestamp */ - for (end = start; *end != 0 && *end != '>'; end++) - ; - if (*end == 0 || (end - start - 1) == 1) { - fprintf(stderr,"Timestamp syntax error in greeting\n"); - return(-1); - } - - /* copy timestamp and password into digestion buffer */ - msg = (char *) malloc((end-start-1) + strlen(queryctl->password) + 1); - *(++end) = 0; - strcpy(msg,start); - strcat(msg,queryctl->password); - - strcpy(queryctl->digest, MD5Digest(msg)); - free(msg); - return(0); -} -#endif /* HAVE_APOP_SUPPORT */ |