/*
* $Id$
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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
*
* Kamailio 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 Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "msfuncs.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <time.h>
#include "../../dprint.h"
#include "../../config.h"
#include "../../ut.h"
#include "../../forward.h"
#include "../../resolve.h"
#include "../../globals.h"
#include "../../udp_server.h"
#include "../../pt.h"
#define CONTACT_PREFIX "Contact: <"
#define CONTACT_SUFFIX ">;msilo=yes"CRLF
#define CONTACT_PREFIX_LEN (sizeof(CONTACT_PREFIX)-1)
#define CONTACT_SUFFIX_LEN (sizeof(CONTACT_SUFFIX)-1)
extern int ms_add_date;
extern int ms_add_contact;
/**
* apostrophes escaping
* - src: source buffer
* - slen: length of source buffer
* - dst: destination buffer
* - dlen: max length of destination buffer
* return: destination length => OK; -1 => error
*/
int m_apo_escape(char* src, int slen, char* dst, int dlen)
{
int i, j;
if(!src || !dst || dlen <= 0)
return -1;
if(slen == -1)
slen = strlen(src);
for(i=j=0; i<slen; i++)
{
switch(src[i])
{
case '\'':
if(j+2>=dlen)
return -2;
memcpy(&dst[j], "\\'", 2);
j += 2;
break;
default:
if(j+1>=dlen)
return -2;
dst[j] = src[i];
j++;
}
}
dst[j] = '\0';
return j;
}
/**
* Build a RFC 3261 compliant Date string from a time_t value
* - date: input of time_t to build the string from
* - buf: pointer to string for output
* - bufLen: length of buf param
*
* return: >0 length of data copied to buf ; <0 error occured
*/
int timetToSipDateStr(time_t date, char* buf, int bufLen)
{
struct tm *gmt;
char* dayArray[7] = {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
char* monthArray[12] = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
int len = 0;
gmt = gmtime(&date);
/* In RFC 3261 the format is always GMT and in the string form like
* "Wkday, Day Month Year HOUR:MIN:SEC GMT"
* "Mon, 19 Feb 2007 18:42:27 GMT"
*/
len = snprintf(buf,bufLen,"Date: %s, %02d %s %d %02d:%02d:%02d GMT\r\n",
dayArray[gmt->tm_wday],
gmt->tm_mday,
monthArray[gmt->tm_mon],
1900 + gmt->tm_year,
gmt->tm_hour,
gmt->tm_min,
gmt->tm_sec
);
/* snprintf returns number of chars it should have printed, so you
* need to bounds check against input*/
return (len > bufLen) ? bufLen : len;
}
/**
* extract the value of Content-Type header
* - src: pointer to C-T content
* - len: length of src
* - ctype: parsed C-T
* - flag: what to parse - bit mask of CT_TYPE, CT_CHARSET, CT_MSGR
*
* return: 0 OK ; -1 error
*/
int m_extract_content_type(char* src, int len, content_type_t* ctype, int flag)
{
char *p, *end;
int f = 0;
if( !src || len <=0 )
goto error;
p = src;
end = p + len;
while((p < end) && (f != flag))
{
while((p < end) && (*p==' ' || *p=='\t'))
p++;
if(p >= end)
goto done;
if((flag & CT_TYPE) && !(f & CT_TYPE))
{
ctype->type.s = p;
while(p < end && *p!=' ' && *p!='\t' && *p!='\0'
&& *p!=';' && *p!='\r' && *p!='\n')
p++;
LM_DBG("content-type found\n");
f |= CT_TYPE;
ctype->type.len = p - ctype->type.s;
if(f == flag) {
return 0;
} else {
p++;
continue;
}
} else {
if((flag & CT_CHARSET) && !(f & CT_CHARSET))
{
return -1;
} else {
if((flag & CT_MSGR) && !(f & CT_MSGR))
{
return -1;
} else {
return 0;
}
}
}
}
done:
if(f==flag)
return 0;
else
return -1;
error:
LM_DBG("error\n");
return -1;
}
/** build MESSAGE headers
*
* Add Content-Type, Contact, Date, and extra headers if they exist
* expects - max buf len of the resulted body in body->len
* - body->s MUST be allocated
* return: 0 OK ; -1 error
* */
int m_build_headers(str *buf, str ctype, str contact, time_t date, str extra)
{
char *p;
char strDate[48];
int lenDate = 0;
int newLen = 0;
if(!buf || !buf->s || buf->len <= 0 || ctype.len < 0)
goto error;
newLen = 14 + ctype.len + CRLF_LEN + extra.len;
if(contact.len > 0 && ms_add_contact)
newLen += CONTACT_PREFIX_LEN + contact.len + CONTACT_SUFFIX_LEN;
if(buf->len <= newLen)
goto error;
p = buf->s;
if(date > 0)
{
lenDate = timetToSipDateStr(date,strDate,48);
strncpy(p, strDate, lenDate);
p += lenDate;
}
if(ctype.len > 0)
{
strncpy(p, "Content-Type: ", 14);
p += 14;
strncpy(p, ctype.s, ctype.len);
p += ctype.len;
strncpy(p, CRLF, CRLF_LEN);
p += CRLF_LEN;
}
if(contact.len > 0 && ms_add_contact)
{
strncpy(p, CONTACT_PREFIX, CONTACT_PREFIX_LEN);
p += CONTACT_PREFIX_LEN;
strncpy(p, contact.s, contact.len);
p += contact.len;
strncpy(p, CONTACT_SUFFIX, CONTACT_SUFFIX_LEN);
p += CONTACT_SUFFIX_LEN;
}
if (extra.len > 0) {
strncpy(p, extra.s, extra.len);
p += extra.len;
}
buf->len = p - buf->s;
return 0;
error:
return -1;
}
/** build MESSAGE body --- add incoming time and 'from'
*
* expects - max buf len of the resulted body in body->len
* - body->s MUST be allocated
* return: 0 OK ; -1 error
* */
int m_build_body(str *body, time_t date, str msg, time_t sdate)
{
char *p;
if(!body || !(body->s) || body->len <= 0 || msg.len <= 0
|| date < 0 || msg.len < 0 || (46+msg.len > body->len) )
goto error;
p = body->s;
if(ms_add_date!=0)
{
if(sdate!=0)
{
strncpy(p, "[Reminder message - ", 20);
p += 20;
strncpy(p, ctime(&sdate), 24);
p += 24;
*p++ = ']';
} else {
strncpy(p, "[Offline message - ", 19);
p += 19;
strncpy(p, ctime(&date), 24);
p += 24;
*p++ = ']';
}
*p++ = ' ';
}
memcpy(p, msg.s, msg.len);
p += msg.len;
body->len = p - body->s;
return 0;
error:
return -1;
}
/* return time stamp of YYYYMMDDHHMMSS */
int ms_extract_time(str *time_str, int *time_val)
{
struct tm stm;
int i;
if(time_str==NULL || time_str->s==NULL
|| time_str->len<=0 || time_val==NULL)
{
LM_ERR("bad parameters\n");
return -1;
}
memset(&stm, 0, sizeof(struct tm));
for(i=0; i<time_str->len; i++)
{
if(time_str->s[i]<'0' || time_str->s[i]>'9')
{
LM_ERR("bad time [%.*s]\n", time_str->len, time_str->s);
return -1;
}
switch(i)
{
case 0:
if(time_str->s[i]<'2')
{
LM_ERR("bad year in time [%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_year += 1000*(time_str->s[i]-'0') - 1900;
break;
case 1:
stm.tm_year += 100*(time_str->s[i]-'0');
break;
case 2:
stm.tm_year += 10*(time_str->s[i]-'0');
break;
case 3:
stm.tm_year += (time_str->s[i]-'0');
break;
case 4:
if(time_str->s[i]>'1')
{
LM_ERR("bad month in time[%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_mon += 10*(time_str->s[i]-'0') - 1;
break;
case 5:
if((time_str->s[i-1]=='0' && time_str->s[i]=='0')
|| (time_str->s[i-1]=='1' && time_str->s[i]>'2'))
{
LM_ERR("bad month in time[%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_mon += (time_str->s[i]-'0');
break;
case 6:
if(time_str->s[i]>'3')
{
LM_ERR("bad day in time [%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_mday += 10*(time_str->s[i]-'0');
break;
case 7:
if((time_str->s[i-1]=='0' && time_str->s[i]=='0')
|| (time_str->s[i-1]=='3' && time_str->s[i]>'1'))
{
LM_ERR("bad day in time [%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_mday += (time_str->s[i]-'0');
break;
case 8:
if(time_str->s[i]>'2')
{
LM_ERR("bad hour in time [%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_hour += 10*(time_str->s[i]-'0');
break;
case 9:
if(time_str->s[i-1]=='2' && time_str->s[i]>'3')
{
LM_ERR("bad hour in time [%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_hour += (time_str->s[i]-'0');
break;
case 10:
if(time_str->s[i]>'5')
{
LM_ERR("bad min in time [%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_min += 10*(time_str->s[i]-'0');
break;
case 11:
stm.tm_min += (time_str->s[i]-'0');
break;
case 12:
if(time_str->s[i]>'5')
{
LM_ERR("bad sec in time [%.*s]\n",
time_str->len, time_str->s);
return -1;
}
stm.tm_sec += 10*(time_str->s[i]-'0');
break;
case 13:
stm.tm_sec += (time_str->s[i]-'0');
break;
default:
LM_ERR("time spec too long [%.*s]\n",
time_str->len, time_str->s);
return -1;
}
}
*time_val = (int)mktime(&stm);
return 0;
}