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wl2k.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 2; c-brace-offset: -2; c-argdecl-indent: 2 -*- */
/* paclink-unix client for the Winlink 2000 ham radio email system.
*
* Copyright 2006 Nicholas S. Castellano <n2qz@arrl.net> and others,
* See the file AUTHORS for a list.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
*
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef __RCSID
__RCSID("$Id$");
#endif
#if HAVE_STDIO_H
# include <stdio.h>
#endif
#if HAVE_STDLIB_H
# include <stdlib.h>
#endif
#if HAVE_STRING_H
# include <string.h>
#endif
#if HAVE_STRINGS_H
# include <strings.h>
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#if HAVE_CTYPE_H
# include <ctype.h>
#endif
#if HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#if HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#if HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#if HAVE_SYS_ERRNO_H
# include <sys/errno.h>
#endif
#if HAVE_ERRNO_H
# include <errno.h>
#endif
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) (strlen((dirent)->d_name))
#else
# define dirent direct
# define NAMLEN(dirent) ((dirent)->d_namlen)
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#include <signal.h>
/*#ifndef bool */
#include <stdbool.h>
/* #endif bool */
/* debug only */
#include <sys/time.h>
/* #include <time.h> */
#include "compat.h"
#include "strutil.h"
#include "conf.h"
#include "wl2k.h"
#include "timeout.h"
#include "mid.h"
#include "buffer.h"
#include "lzhuf_1.h"
#include "wl2mime.h"
#include "printlog.h"
#define LINBPQ_FIX 1
#define PROPLIMIT 5
/* number of bytes to send through socket */
#define CHUNK_SIZE 250
/* Send messages only flag */
extern int gsendmsgonly_flag;
/* Flag set in sigalrm */
extern sig_atomic_t timeout_flag;
extern int timeoutsecs;
struct proposal {
char code;
char type;
char mid[MID_MAXLEN + 1];
unsigned long usize;
unsigned long csize;
struct proposal *next;
char *path;
struct buffer *ubuf;
struct buffer *cbuf;
char *title;
unsigned long offset;
int accepted;
int delete;
};
static int getrawchar(FILE *fp);
static struct buffer *getcompressed(FILE *fp);
static struct proposal *parse_proposal(char *propline);
static int b2outboundproposal(FILE *ifp, FILE *ofp, char *lastcommand, struct proposal **oproplist);
static void printprop(struct proposal *prop);
static void putcompressed(struct proposal *prop, FILE *fp);
static char *tgetline(FILE *fp, int terminator, int ignore);
static void dodelete(struct proposal **oproplist, struct proposal **nproplist);
static void send_my_sid(FILE *ofp);
static char *parse_inboundsid(char *line);
static int inbound_parser(FILE *ifp, FILE *ofp, struct proposal *nproplist, struct proposal *oproplist, char *emailaddress);
static bool p2p_qualify(char *fname, char *remotecall, struct buffer* readfile);
#ifdef WL2KAX25_DAEMON
static void p2p_startmsg( FILE *ofp, cfg_t *cfg, int opropcount, long unsigned int oprop_usize);
static char *handshake_no_secure_login(FILE *ifp, FILE *ofp, cfg_t *cfg, int opropcount);
#else /* NOT WL2KAX25_DAEMON, for secure login */
static char *handshake(FILE *ifp, FILE *ofp, cfg_t *cfg, int opropcount);
static void compute_secure_login_response(char *challenge, char *response, char *password);
static int send_secure_login_response(FILE *ofp, char *challenge, char *sl_pass);
bool isax25connected(int s);
bool wl2k_wait_for_response(cfg_t *cfg, FILE *ifp);
static unsigned int getseconds(void);
# include "md5.h"
/* Salt for Winlink 2000 secure login */
static const unsigned char sl_salt[] = {
77, 197, 101, 206, 190, 249,
93, 200, 51, 243, 93, 237,
71, 94, 239, 138, 68, 108,
70, 185, 225, 137, 217, 16,
51, 122, 193, 48, 194, 195,
198, 175, 172, 169, 70, 84,
61, 62, 104, 186, 114, 52,
61, 168, 66, 129, 192, 208,
187, 249, 232, 193, 41, 113,
41, 45, 240, 16, 29, 228,
208, 228, 61, 20 };
#endif /* NOT WL2KAX25_DAEMON */
/* Debug only */
void dump_hex(char *buf, size_t len);
void
dump_hex(char *buf, size_t len)
{
size_t i;
unsigned char *pBuf;
pBuf = (unsigned char *)buf;
for(i=0; i < len; i++) {
printf("%02x ", *pBuf++);
}
printf("\n");
}
static int
getrawchar(FILE *fp)
{
int c;
resettimeout();
c = fgetc(fp);
if (c == EOF) {
print_log(LOG_ERR, "lost connection in getrawchar()");
exit(EXIT_FAILURE);
}
return c;
}
#define CHRNUL 0
#define CHRSOH 1
#define CHRSTX 2
#define CHREOT 4
struct buffer *
getcompressed(FILE *fp)
{
int c;
int len;
int i;
unsigned char title[81];
unsigned char offset[7];
int cksum = 0;
struct buffer *buf;
if ((buf = buffer_new()) == NULL) {
return NULL;
}
c = getrawchar(fp);
if (c != CHRSOH) {
buffer_free(buf);
return NULL;
}
len = getrawchar(fp);
title[80] = '\0';
for (i = 0; i < 80; i++) {
c = getrawchar(fp);
len--;
title[i] = (unsigned char)c;
if (c == CHRNUL) {
ungetc(c, fp);
len++;
break;
}
}
c = getrawchar(fp);
len--;
if (c != CHRNUL) {
buffer_free(buf);
return NULL;
}
print_log(LOG_DEBUG, "title: %s", title);
offset[6] = '\0';
for (i = 0; i < 6; i++) {
c = getrawchar(fp);
len--;
offset[i] = (unsigned char)c;
if (c == CHRNUL) {
ungetc(c, fp);
len++;
break;
}
}
c = getrawchar(fp);
len--;
if (c != CHRNUL) {
buffer_free(buf);
return NULL;
}
print_log(LOG_DEBUG,"offset: %s", offset);
if (len != 0) {
buffer_free(buf);
return NULL;
}
if (strcmp((const char *) offset, "0") != 0) {
buffer_free(buf);
return NULL;
}
for (;;) {
c = getrawchar(fp);
switch (c) {
case CHRSTX:
print_log(LOG_DEBUG,"STX");
len = getrawchar(fp);
if (len == 0) {
len = 256;
}
print_log(LOG_DEBUG,"len %d", len);
while (len--) {
c = getrawchar(fp);
if (buffer_addchar(buf, c) == EOF) {
buffer_free(buf);
return NULL;
}
cksum = (cksum + c) % 256;
}
break;
case CHREOT:
print_log(LOG_DEBUG,"EOT");
c = getrawchar(fp);
cksum = (cksum + c) % 256;
if (cksum != 0) {
print_log(LOG_ERR, "bad cksum");
buffer_free(buf);
return NULL;
}
return buf;
break;
default:
print_log(LOG_ERR,"unexpected character in compressed stream");
buffer_free(buf);
return NULL;
break;
}
}
buffer_free(buf);
return NULL;
}
static void
putcompressed(struct proposal *prop, FILE *fp)
{
size_t len;
unsigned char title[81];
unsigned char offset[7];
int cksum = 0;
unsigned char *cp, *cp_buf;
long rem;
unsigned char msglen;
size_t msgbuflen;
strlcpy((char *) title, prop->title, sizeof(title));
snprintf((char *) offset, sizeof(offset), "%lu", prop->offset);
print_log(LOG_DEBUG,"transmitting [%s] [offset %s]", title, offset);
len = strlen((const char *) title) + strlen((const char *) offset) + 2;
/* ** Send header */
resettimeout();
if (fprintf(fp, "%c%c%s%c%s%c", CHRSOH, (int)len, title, CHRNUL, offset, CHRNUL) == -1) {
print_log(LOG_ERR, "fprintf() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
fflush(fp);
rem = (long)prop->csize;
cp = prop->cbuf->data;
if (rem < 6) {
print_log(LOG_ERR,"invalid compressed data");
exit(EXIT_FAILURE);
}
cp += prop->offset;
rem -= (long)prop->offset;
if (rem < 0) {
print_log(LOG_ERR,"invalid offset");
exit(EXIT_FAILURE);
}
/* ** Send message */
while (rem > 0) {
print_log(LOG_DEBUG,"... %ld", rem);
if (rem > CHUNK_SIZE) {
msglen = CHUNK_SIZE;
} else {
msglen = (unsigned char)rem;
}
if (fprintf(fp, "%c%c", CHRSTX, msglen) == -1) {
print_log(LOG_ERR, "fprintf() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
/* ** send buffer to ax25 stack */
cp_buf = cp;
msgbuflen = msglen;
while (msglen--) {
cksum += *cp;
cp++;
rem--;
}
resettimeout();
if( fwrite(cp_buf, 1, msgbuflen, fp) < msgbuflen) {
print_log(LOG_ERR, "socket write - %s", strerror(errno));
}
fflush(fp);
}
/* ** Send checksum */
cksum = -cksum & 0xff;
resettimeout();
if (fprintf(fp, "%c%c", CHREOT, cksum) == -1) {
print_log(LOG_ERR, "fprintf() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
fflush(fp);
resettimeout();
}
static struct proposal *
parse_proposal(char *propline)
{
char *cp = propline;
static struct proposal prop;
int i;
char *endp;
if (!cp) {
return NULL;
}
if (*cp++ != 'F') {
return NULL;
}
prop.code = *cp++;
switch (prop.code) {
case 'C':
if (*cp++ != ' ') {
print_log(LOG_ERR,"malformed proposal 1");
return NULL;
}
prop.type = *cp++;
if ((prop.type != 'C') && (prop.type != 'E')) {
print_log(LOG_ERR,"malformed proposal 2");
return NULL;
}
if (*cp++ != 'M') {
print_log(LOG_ERR," malformed proposal 3");
return NULL;
}
if (*cp++ != ' ') {
print_log(LOG_ERR,"malformed proposal 4");
return NULL;
}
for (i = 0; i < MID_MAXLEN; i++) {
prop.mid[i] = *cp++;
if (prop.mid[i] == ' ') {
prop.mid[i] = '\0';
cp--;
break;
} else {
if (prop.mid[i] == '\0') {
print_log(LOG_ERR,"malformed proposal 5");
return NULL;
}
}
}
prop.mid[MID_MAXLEN] = '\0';
if (*cp++ != ' ') {
print_log(LOG_ERR,"malformed proposal 6");
return NULL;
}
prop.usize = strtoul(cp, &endp, 10);
cp = endp;
if (*cp++ != ' ') {
print_log(LOG_ERR,"malformed proposal 7");
return NULL;
}
prop.csize = (unsigned int) strtoul(cp, &endp, 10);
cp = endp;
if (*cp != ' ') {
print_log(LOG_ERR,"malformed proposal 8");
return NULL;
}
break;
case 'A':
case 'B':
default:
prop.type = 'X';
prop.mid[0] = '\0';
prop.usize = 0;
prop.csize = 0;
break;
print_log(LOG_ERR,"unsupported proposal type %c", prop.code);
break;
}
prop.next = NULL;
prop.path = NULL;
prop.cbuf = NULL;
prop.ubuf = NULL;
prop.delete = 0;
return ∝
}
static void
printprop(struct proposal *prop)
{
print_log(LOG_DEBUG,
"proposal code %c type %c mid %s usize %lu csize %lu next %p path %s ubuf %p cbuf %p",
prop->code,
prop->type,
prop->mid,
prop->usize,
prop->csize,
prop->next,
prop->path,
prop->ubuf,
prop->cbuf);
}
static void
dodelete(struct proposal **oproplist, struct proposal **nproplist)
{
if ((oproplist == NULL) || (nproplist == NULL)) {
print_log(LOG_ERR,"bad call to dodelete()");
exit(EXIT_FAILURE);
}
while (*oproplist != *nproplist) {
if (((*oproplist)->delete) && ((*oproplist)->path)) {
print_log(LOG_ERR,"DELETING PROPOSAL: ");
printprop(*oproplist);
#if 1
if(unlink((*oproplist)->path) < 0) {
print_log(LOG_ERR,"Can't delete file: %s: %s",
(*oproplist)->path, strerror(errno));
}
#endif
(*oproplist)->delete = 0;
}
oproplist = &((*oproplist)->next);
}
}
/*
* Qualify Callsign of a peer-to-peer message in outbox
*
* - Single address on To: line
* - No addresses on Cc: line
* - Single address on To: line matches caller's callsign
*/
static bool
p2p_qualify(char *fname, char *remotecall, struct buffer* readfile)
{
char *line, *callsign;
char *cp, *sp, *np;
bool p2p_ret = true;
print_log(LOG_DEBUG_VERBOSE, "Debug: %s() file name: %s\n", __FUNCTION__, fname);
while ((line = buffer_getline(readfile, '\n')) != NULL) {
if (strbegins(line, "To:")) {
strzapcc(line);
cp = line + 3;
while (isspace(*cp)) {
cp++;
}
if (strlen((const char *) cp) > 80) {
cp[80] = '\0';
}
/* Find first character after To: */
sp = strchr(cp, ':');
if (sp == NULL) {
print_log(LOG_DEBUG_VERBOSE, "Debug: %s() to: parse error, could not locate colon %s\n", __FUNCTION__, cp);
free(line);
p2p_ret = false;
break;
} else {
/* isolate the callsign on To: line */
print_log(LOG_DEBUG_VERBOSE, "Debug: %s() to: %s, %s\n", __FUNCTION__, cp, sp+1);
callsign = strdup(sp+1);
}
np = strchr(callsign, '@');
if (np == NULL) {
print_log(LOG_DEBUG, "Debug: %s() No address found %s\n", __FUNCTION__, cp);
} else {
/* Are there multiple addresses on the To: line? */
sp = strchr(np+1, '@');
if (sp == NULL) {
/* Single address on the To: line, isolate the callsign */
strupper(callsign);
*np = '\0';
print_log(LOG_DEBUG, "Debug: %s() Found a single address: %s\n", __FUNCTION__, callsign);
/* compare callsign in mail message with callsign of caller */
if (strcmp(callsign, remotecall) != 0) {
print_log(LOG_DEBUG, "Debug: %s() callsign compare fail: %s to: %s\n", __FUNCTION__, callsign, remotecall);
free(line);
p2p_ret = false;
break;
}
print_log(LOG_DEBUG_VERBOSE, "Debug: %s() callsign match: %s to: %s\n", __FUNCTION__, callsign, remotecall);
} else {
print_log(LOG_DEBUG, "Debug: %s() Found multiple addresses %s\n", __FUNCTION__, cp);
free(line);
p2p_ret = false;
break;
}
}
}
/* Find first character after Cc:
* - if a Cc: line is found at all p2p is disqualified
*/
if (strbegins(line, "Cc:")) {
strzapcc(line);
cp = line + 3;
while (isspace(*cp)) {
cp++;
}
if (strlen((const char *) cp) > 80) {
cp[80] = '\0';
}
print_log(LOG_DEBUG, "%s() Cc: %s\n", __FUNCTION__, cp);
free(line);
p2p_ret = false;
break;
}
free(line);
}
return p2p_ret;
}
static struct proposal *
prepare_outbound_proposals(bool bp2p, char *remotecall)
{
struct proposal *prop;
struct proposal **opropnext;
struct proposal *oproplist = NULL;
DIR *dirp;
struct dirent *dp;
char *line;
unsigned char *cp;
struct stat sb;
char name[MID_MAXLEN + 1];
opropnext = &oproplist;
if (chdir(WL2K_OUTBOX) != 0) {
print_log(LOG_ERR,"chdir(%s): %s", WL2K_OUTBOX, strerror(errno));
exit(EXIT_FAILURE);
}
if ((dirp = opendir(".")) == NULL) {
print_log(LOG_ERR,"opendir() -%s", strerror(errno));
exit(EXIT_FAILURE);
}
while ((dp = readdir(dirp)) != NULL) {
if (NAMLEN(dp) > MID_MAXLEN) {
print_log(LOG_ERR,
"warning: skipping bad filename %s in outbox directory %s",
dp->d_name, WL2K_OUTBOX);
continue;
}
strlcpy(name, dp->d_name, MID_MAXLEN + 1);
name[NAMLEN(dp)] = '\0';
if (stat(name, &sb)) {
continue;
}
if (!(S_ISREG(sb.st_mode))) {
continue;
}
if ((prop = malloc(sizeof(struct proposal))) == NULL) {
print_log(LOG_ERR,"malloc() - %s",strerror(errno));
exit(EXIT_FAILURE);
}
prop->code = 'C';
prop->type = 'E';
strlcpy(prop->mid, name, MID_MAXLEN + 1);
prop->path = strdup(name);
if ((prop->ubuf = buffer_readfile(prop->path)) == NULL) {
print_log(LOG_ERR,"%s - %s", prop->path, strerror(errno));
exit(EXIT_FAILURE);
}
if(bp2p) {
if(!p2p_qualify(name, remotecall, prop->ubuf)) {
free(prop);
buffer_free(prop->ubuf);
print_log(LOG_DEBUG_VERBOSE, "Debug: %s() p2p qualify FALSE for filename %s\n", __FUNCTION__, name);
continue;
} else {
print_log(LOG_DEBUG_VERBOSE, "Debug: %s() p2p qualify TRUE for filename %s\n", __FUNCTION__, name);
}
}
prop->usize = prop->ubuf->dlen;
if ((prop->cbuf = version_1_Encode(prop->ubuf)) == NULL) {
print_log(LOG_ERR,"version_1_Encode() %s", strerror(errno));
exit(EXIT_FAILURE);
}
prop->csize = (unsigned long) prop->cbuf->dlen;
prop->title = NULL;
prop->offset = 0;
prop->accepted = 0;
prop->delete = 0;
buffer_rewind(prop->ubuf);
while ((line = buffer_getline(prop->ubuf, '\n')) != NULL) {
if (strbegins(line, "Subject:")) {
strzapcc(line);
cp = ((unsigned char *) line) + 8;
while (isspace(*cp)) {
cp++;
}
if (strlen((const char *) cp) > 80) {
cp[80] = '\0';
}
prop->title = strdup((const char *) cp);
}
free(line);
}
if (prop->title == NULL) {
prop->title = strdup("No subject");
}
prop->next = NULL;
*opropnext = prop;
opropnext = &prop->next;
}
closedir(dirp);
print_log(LOG_DEBUG,"---\n%s", oproplist ? " outbound proposal list" : "");
for (prop = oproplist; prop != NULL; prop = prop->next) {
printprop(prop);
}
return oproplist;
}
/*
* returns 0
* - after putting compressed
* - outputting FF
*
* returns -1
* - after outputting FQ
*
*/
static int
b2outboundproposal(FILE *ifp, FILE *ofp, char *lastcommand, struct proposal **oproplist)
{
int i;
char *sp;
unsigned char *cp;
int cksum = 0;
char *line;
struct proposal *prop;
char *endp;
if (*oproplist) {
prop = *oproplist;
for (i = 0; i < PROPLIMIT; i++) {
if (asprintf(&sp, "F%c %cM %s %lu %lu 0\r",
prop->code,
prop->type,
prop->mid,
prop->usize,
prop->csize) == -1) {
print_log(LOG_ERR, "asprintf() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
print_log(LOG_DEBUG, ">%s", sp);
resettimeout();
if (fprintf(ofp, "%s", sp) == -1) {
print_log(LOG_ERR, "fprintf() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
for (cp = (unsigned char *) sp; *cp; cp++) {
cksum += (unsigned char) *cp;
}
free(sp);
if ((prop = prop->next) == NULL) {
break;
}
}
cksum = -cksum & 0xff;
print_log(LOG_DEBUG, ">F> %02X", cksum);
resettimeout();
if (fprintf(ofp, "F> %02X\r", cksum) == -1) {
print_log(LOG_ERR, "fprintf() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
fflush(ofp);
if ((line = wl2kgetline(ifp)) == NULL) {
print_log(LOG_ERR, "connection closed");
exit(EXIT_FAILURE);
}
print_log(LOG_DEBUG, "<%s", line);
/* For line beginning: ";PM: " pending messages */
while (strbegins(line, ";PM:")) {
/* ignore this line & get next line */
print_log(LOG_DEBUG, "Found WL2K extension, pending msg");
if ((line = wl2kgetline(ifp)) == NULL) {
print_log(LOG_ERR, "connection closed");
exit(EXIT_FAILURE);
}
print_log(LOG_DEBUG, "<%s", line);
}
/* For line beginning: ";FW: " forwarding mail */
while (strbegins(line, ";FW:")) {
/* ignore this line & get next line */
print_log(LOG_DEBUG, "Found WL2K extension, forward mail");
if ((line = wl2kgetline(ifp)) == NULL) {
print_log(LOG_ERR, "connection closed");
exit(EXIT_FAILURE);
}
print_log(LOG_DEBUG, "<%s", line);
}
if (!strbegins(line, "FS ")) {
print_log(LOG_ERR, "B2 protocol error 1");
exit(EXIT_FAILURE);
}
prop = *oproplist;
i = 0;
cp = ((unsigned char *) line) + 3;
while (*cp && isspace(*cp)) {
cp++;
}
while (*cp && prop) {
if (i == PROPLIMIT) {
print_log(LOG_ERR, "B2 protocol error 2");
exit(EXIT_FAILURE);
}
prop->accepted = 0;
prop->delete = 0;
prop->offset = 0;
switch(*cp) {
case 'Y': case 'y':
case 'H': case 'h':
case '+':
prop->accepted = 1;
break;
case 'N': case 'n':
case 'R': case 'r':
case '-':
prop->delete = 1;
break;
case 'L': case 'l':
case '=':
break;
case 'A': case 'a':
case '!':
prop->accepted = 1;
prop->offset = strtoul((const char *) cp, &endp, 10);
cp = ((unsigned char *) endp) - 1;
break;
default:
print_log(LOG_ERR, "B2 protocol error 3");
exit(EXIT_FAILURE);
break;
}
cp++;
prop = prop->next;
}
prop = *oproplist;
for (i = 0; i < PROPLIMIT; i++) {
if(prop->delete == 0) {
putcompressed(prop, ofp);
prop->delete = 1;
}
if ((prop = prop->next) == NULL) {
print_log(LOG_DEBUG_VERBOSE, "Debug: After putcompressed prop->next = NULL, i:%d", i);
break;
}
}
*oproplist = prop;
print_log(LOG_DEBUG_VERBOSE, "Finished proplist %d putcompressed", i);
return 0;
} else if (strbegins(lastcommand, "FF")) {
print_log(LOG_DEBUG, ">FQ");
resettimeout();
if (fprintf(ofp, "FQ\r") == -1) {
print_log(LOG_ERR, "fprintf() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
fflush(ofp);
return -1;
} else {
print_log(LOG_DEBUG, ">FF");
resettimeout();
if (fprintf(ofp, "FF\r") == -1) {
print_log(LOG_ERR, "fprintf() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
fflush(ofp);
return 0;
}
}
/*
* get a seconds reference
*/
unsigned int getseconds(void)
{
/* get current time */
struct timeval nowVal;
gettimeofday(&nowVal, NULL);
return(nowVal.tv_sec);
}
static char *
tgetline(FILE *fp, int terminator, int ignore)
{
static struct buffer *buf = NULL;
int c;
int notascii_buf[256]; /* debug only */
size_t notascii_ind = 0;
if (buf == NULL) {
if ((buf = buffer_new()) == NULL) {
print_log(LOG_ERR, "buffer_new() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
} else {
buffer_truncate(buf);
}
for (;;) {
resettimeout();
/* Note: Timeout the fgetc blocking function */
if ((c = fgetc(fp)) == EOF) {
return NULL;
}
/* Debug only */
if (c == 0x1e || (!isascii(c) && c != terminator && c != ignore) ) {
notascii_buf[notascii_ind] = c;
if(notascii_ind < 255) {
notascii_ind++;
}
continue;
}
if (c == terminator) {
if (buffer_addchar(buf, '\0') == -1) {
print_log(LOG_ERR, "buffer_addchar()- %s", strerror(errno));
exit(EXIT_FAILURE);
}
if (notascii_ind > 0) {
print_log(LOG_DEBUG, "Found non ascii response:");
dump_hex((char *)notascii_buf, notascii_ind);
}
return (char *) buf->data;
}
if ((c != ignore) && buffer_addchar(buf, c) == -1) {
print_log(LOG_ERR, "buffer_addchar() - %s", strerror(errno));
exit(EXIT_FAILURE);
}
if (timeout_flag != 1) {
printf("exiting on timeout flag set\n");
exit(EXIT_FAILURE);
}
}
return NULL;
}
char *
wl2kgetline(FILE *fp)
{
char *cp;
cp = tgetline(fp, '\r', '\n');
return cp;
}
void
send_my_sid(FILE *ofp)
{
char sidbuf[32];
sprintf(sidbuf, "[%s-%s-B2FIHM$]", SID_NAME, PACKAGE_VERSION);
print_log(LOG_DEBUG, ">%s", sidbuf);
resettimeout();
if (fprintf(ofp, "%s\r", sidbuf) == -1) {
print_log(LOG_ERR, "fprintf() - %s",strerror(errno));
exit(EXIT_FAILURE);
}
}
char *
parse_inboundsid(char *line)
{
char *cp;
char *inboundsid = NULL;
char *inboundsidcodes = NULL;
inboundsid = strdup(line);
if ((cp = strrchr(inboundsid, '-')) == NULL) {
print_log(LOG_ERR, "bad sid %s", inboundsid);
exit(EXIT_FAILURE);
}
inboundsidcodes = strdup(cp);
if ((cp = strrchr(inboundsidcodes, ']')) == NULL) {
print_log(LOG_ERR, "bad sid %s", inboundsid);
exit(EXIT_FAILURE);
}
*cp = '\0';