pop_get_command.c
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上传日期:2007-01-04
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文件大小:4k
- /*
- * Copyright (c) 1989 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- */
- /*
- * Copyright (c) 1997 by Qualcomm Incorporated.
- */
- #include <config.h>
- #include <stdio.h>
- #include <sys/types.h>
- #include <string.h>
- #if HAVE_STRINGS_H
- #include <strings.h>
- #endif
- #include "popper.h"
- /*
- * get_command: Extract the command from an input line form a POP client
- */
- static state_table states[] = {
- auth1, "user", 1, 1, pop_user, {auth1, auth2},
- auth2, "pass", 1, 1, pop_pass, {halt, trans},
- auth1, "auth", 1, 2, pop_auth, {auth1, auth1},
- #ifdef RPOP
- auth2, "rpop", 1, 1, pop_rpop, {halt, trans},
- #endif
- #ifdef APOP
- auth1, "apop", 2, 2, pop_apop, {halt, trans},
- #endif
- auth1, "quit", 0, 0, pop_quit, {halt, halt},
- auth2, "quit", 0, 0, pop_quit, {halt, halt},
- trans, "stat", 0, 0, pop_stat, {trans, trans},
- trans, "list", 0, 1, pop_list, {trans, trans},
- trans, "retr", 1, 1, pop_send, {trans, trans},
- trans, "dele", 1, 1, pop_dele, {trans, trans},
- trans, "noop", 0, 0, NULL, {trans, trans},
- trans, "rset", 0, 0, pop_rset, {trans, trans},
- trans, "top", 2, 2, pop_send, {trans, trans},
- trans, "last", 0, 0, pop_last, {trans, trans},
- trans, "xtnd", 1, 99, pop_xtnd, {trans, trans},
- trans, "uidl", 0, 1, pop_uidl, {trans, trans},
- trans, "euidl",0, 1, pop_euidl, {trans, trans},
- trans, "quit", 0, 0, pop_updt, {halt, halt},
- (state) 0, NULL, 0, 0, NULL, {halt, halt},
- };
- state_table *pop_get_command(p,mp)
- POP * p;
- register char * mp; /* Pointer to unparsed line
- received from the client */
- {
- state_table * s;
- char buf[MAXMSGLINELEN];
- /* Save a copy of the original client line */
- #ifdef DEBUG
- if(p->debug) strncpy(buf, mp, sizeof(buf));
- #endif
- /* Parse the message into the parameter array */
- if ((p->parm_count = pop_parse(p,mp)) < 0) return(NULL);
- /* Do not log cleartext passwords */
- #ifdef DEBUG
- if(p->debug){
- if(strcmp(p->pop_command,"pass") == 0)
- pop_log(p,POP_DEBUG,"Received: "%.128s xxxxxxxxx"",p->pop_command);
- else {
- /* Remove trailing <LF> */
- buf[strlen(buf)-2] = ' ';
- pop_log(p,POP_DEBUG,"Received: "%.128s"",buf);
- }
- }
- #endif
- /* Search for the POP command in the command/state table */
- for (s = states; s->command; s++) {
- /* Is this a valid command for the current operating state? */
- if (strcmp(s->command,p->pop_command) == 0
- && s->ValidCurrentState == p->CurrentState) {
- /* Were too few parameters passed to the command? */
- if (p->parm_count < s->min_parms) {
- pop_msg(p,POP_FAILURE,
- "Too few arguments for the %.128s command.",p->pop_command);
- return((state_table *)0);
- }
-
- /* Were too many parameters passed to the command? */
- if (p->parm_count > s->max_parms) {
- pop_msg(p,POP_FAILURE,
- "Too many arguments for the %.128s command.",p->pop_command);
- return((state_table *)0);
- }
-
- /* Return a pointer to the entry for this command in
- the command/state table */
- return (s);
- }
- }
- /* The client command was not located in the command/state table */
- pop_msg(p,POP_FAILURE,"Unknown command: "%.128s".",p->pop_command);
- return((state_table *)0);
- }