diff options
Diffstat (limited to 'crypto/heimdal/appl/popper/pop_send.c')
| -rw-r--r-- | crypto/heimdal/appl/popper/pop_send.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/crypto/heimdal/appl/popper/pop_send.c b/crypto/heimdal/appl/popper/pop_send.c new file mode 100644 index 0000000..166b990 --- /dev/null +++ b/crypto/heimdal/appl/popper/pop_send.c @@ -0,0 +1,176 @@ +/* + * Copyright (c) 1989 Regents of the University of California. + * All rights reserved. The Berkeley software License Agreement + * specifies the terms and conditions for redistribution. + */ + +#include <popper.h> +RCSID("$Id: pop_send.c,v 1.25 1999/03/05 14:14:28 joda Exp $"); + +/* + * sendline: Send a line of a multi-line response to a client. + */ +static int +pop_sendline(POP *p, char *buffer) +{ + char * bp; + + /* Byte stuff lines that begin with the termination octet */ + if (*buffer == POP_TERMINATE) + fputc(POP_TERMINATE,p->output); + + /* Look for a <NL> in the buffer */ + if ((bp = strchr(buffer, '\n'))) + *bp = 0; + + /* Send the line to the client */ + fputs(buffer,p->output); + +#ifdef DEBUG + if(p->debug) + pop_log(p,POP_DEBUG,"Sending line \"%s\"",buffer); +#endif /* DEBUG */ + + /* Put a <CR><NL> if a newline was removed from the buffer */ + if (bp) + fputs ("\r\n",p->output); + return bp != NULL; +} + +/* + * send: Send the header and a specified number of lines + * from a mail message to a POP client. + */ + +int +pop_send(POP *p) +{ + MsgInfoList * mp; /* Pointer to message info list */ + int msg_num; + int msg_lines; + char buffer[MAXMSGLINELEN]; +#ifdef RETURN_PATH_HANDLING + char * return_path_adr; + char * return_path_end; + int return_path_sent; + int return_path_linlen; +#endif + int sent_nl = 0; + + /* Convert the first parameter into an integer */ + msg_num = atoi(p->pop_parm[1]); + + /* Is requested message out of range? */ + if ((msg_num < 1) || (msg_num > p->msg_count)) + return (pop_msg (p,POP_FAILURE,"Message %d does not exist.",msg_num)); + + /* Get a pointer to the message in the message list */ + mp = &p->mlp[msg_num-1]; + + /* Is the message flagged for deletion? */ + if (mp->flags & DEL_FLAG) + return (pop_msg (p,POP_FAILURE, + "Message %d has been deleted.",msg_num)); + + /* If this is a TOP command, get the number of lines to send */ + if (strcmp(p->pop_command, "top") == 0) { + /* Convert the second parameter into an integer */ + msg_lines = atoi(p->pop_parm[2]); + } + else { + /* Assume that a RETR (retrieve) command was issued */ + msg_lines = -1; + /* Flag the message as retreived */ + mp->flags |= RETR_FLAG; + } + + /* Display the number of bytes in the message */ + pop_msg(p, POP_SUCCESS, "%ld octets", mp->length); + + if(IS_MAILDIR(p)) { + int e = pop_maildir_open(p, mp); + if(e != POP_SUCCESS) + return e; + } + + /* Position to the start of the message */ + fseek(p->drop, mp->offset, 0); + + return_path_sent = 0; + + if(!IS_MAILDIR(p)) { + /* Skip the first line (the sendmail "From" line) */ + fgets (buffer,MAXMSGLINELEN,p->drop); + +#ifdef RETURN_PATH_HANDLING + if (strncmp(buffer,"From ",5) == 0) { + return_path_linlen = strlen(buffer); + for (return_path_adr = buffer+5; + (*return_path_adr == ' ' || *return_path_adr == '\t') && + return_path_adr < buffer + return_path_linlen; + return_path_adr++) + ; + if (return_path_adr < buffer + return_path_linlen) { + if ((return_path_end = strchr(return_path_adr, ' ')) != NULL) + *return_path_end = '\0'; + if (strlen(return_path_adr) != 0 && *return_path_adr != '\n') { + static char tmpbuf[MAXMSGLINELEN + 20]; + if (snprintf (tmpbuf, + sizeof(tmpbuf), + "Return-Path: %s\n", + return_path_adr) < MAXMSGLINELEN) { + pop_sendline (p,tmpbuf); + if (hangup) + return pop_msg (p, POP_FAILURE, + "SIGHUP or SIGPIPE flagged"); + return_path_sent++; + } + } + } + } +#endif + } + + /* Send the header of the message followed by a blank line */ + while (fgets(buffer,MAXMSGLINELEN,p->drop)) { +#ifdef RETURN_PATH_HANDLING + /* Don't send existing Return-Path-header if already sent own */ + if (!return_path_sent || strncasecmp(buffer, "Return-Path:", 12) != 0) +#endif + sent_nl = pop_sendline (p,buffer); + /* A single newline (blank line) signals the + end of the header. sendline() converts this to a NULL, + so that's what we look for. */ + if (*buffer == 0) break; + if (hangup) + return (pop_msg (p,POP_FAILURE,"SIGHUP or SIGPIPE flagged")); + } + /* Send the message body */ + { + int blank_line = 1; + while (fgets(buffer, MAXMSGLINELEN-1, p->drop)) { + /* Look for the start of the next message */ + if (!IS_MAILDIR(p) && blank_line && strncmp(buffer,"From ",5) == 0) + break; + blank_line = (strncmp(buffer, "\n", 1) == 0); + /* Decrement the lines sent (for a TOP command) */ + if (msg_lines >= 0 && msg_lines-- == 0) break; + sent_nl = pop_sendline(p,buffer); + if (hangup) + return (pop_msg (p,POP_FAILURE,"SIGHUP or SIGPIPE flagged")); + } + /* add missing newline at end */ + if(!sent_nl) + fputs("\r\n", p->output); + /* some pop-clients want a blank line at the end of the + message, we always add one here, but what the heck -- in + outer (white) space, no one can hear you scream */ + if(IS_MAILDIR(p)) + fputs("\r\n", p->output); + } + /* "." signals the end of a multi-line transmission */ + fputs(".\r\n",p->output); + fflush(p->output); + + return(POP_SUCCESS); +} |
