/**
* Takes a dvector and implodes it to a string based on a specific
* character to delimit by.
* Returns a dstrbuf
*/
dstrbuf *
implode(dvector vec, char delim)
{
dstrbuf *buf = dsbNew(100);
size_t veclen = dvLength(vec);
uint i=0;
for (i=0; i < veclen; i++) {
dsbCat(buf, vec[i]);
if ((i+1) < veclen) {
/* Only append a ',' if we're not at the end. */
dsbCat(buf, &delim);
}
}
return buf;
}
/**
* will save the sent email if a place is specified in the
* configuration file It will append each email to one particular
* file called 'email.sent'
**/
static int
saveSentEmail(dstrbuf *msg)
{
FILE *save;
char *save_file = NULL;
dstrbuf *path;
save_file = getConfValue("SAVE_SENT_MAIL");
if (!save_file) {
return ERROR;
}
path = expandPath(save_file);
dsbCat(path, "/email.sent");
if (!(save = fopen(path->str, "a"))) {
warning("Could not open file: %s", path->str);
dsbDestroy(path);
return ERROR;
}
fputs(msg->str, save);
fflush(save);
fclose(save);
return SUCCESS;
}
/**
* Makes a standard plain text message while taking into
* account the MIME message types and boundary's needed
* if and when a file is attached.
**/
static int
makeMessage(dstrbuf *in, dstrbuf *out, const char *border, CharSetType charset)
{
dstrbuf *enc=NULL;
if (Mopts.attach) {
dsbPrintf(out, "--%s\r\n", border);
if (charset == IS_UTF8 || charset == IS_PARTIAL_UTF8) {
dsbPrintf(out, "Content-Type: text/plain; charset=utf-8\r\n");
if (IS_PARTIAL_UTF8) {
dsbPrintf(out, "Content-Transfer-Encoding: quoted-printable\r\n");
enc = mimeQpEncodeString((u_char *)in->str, true);
} else {
dsbPrintf(out, "Content-Transfer-Encoding: base64\r\n");
enc = mimeB64EncodeString((u_char *)in->str, in->len, true);
}
dsbPrintf(out, "Content-Disposition: inline\r\n\r\n");
} else if (Mopts.html) {
dsbPrintf(out, "Content-Type: text/html\r\n\r\n");
enc = DSB_NEW;
dsbCat(enc, in->str);
} else {
dsbPrintf(out, "Content-Type: text/plain\r\n\r\n");
enc = DSB_NEW;
dsbCat(enc, in->str);
}
} else {
if (charset == IS_UTF8) {
enc = mimeB64EncodeString((u_char *)in->str, in->len, true);
} else if (charset == IS_PARTIAL_UTF8) {
enc = mimeQpEncodeString((u_char *)in->str, true);
} else {
enc = DSB_NEW;
dsbCat(enc, in->str);
}
}
dsbPrintf(out, "%s\r\n", enc->str);
if (Mopts.attach) {
if (attachFiles(border, out) == ERROR) {
return ERROR;
}
dsbPrintf(out, "\r\n\r\n--%s--\r\n", border);
}
dsbDestroy(enc);
return 0;
}
/**
* takes a string that is a supposed file path, and
* checks for certian wildcards ( like ~ for home directory )
* and resolves to an actual absolute path.
**/
dstrbuf *
expandPath(const char *path)
{
struct passwd *pw = NULL;
dstrbuf *tmp = DSB_NEW;
dstrbuf *ret = DSB_NEW;
dsbCopy(tmp, path);
if (tmp->len > 0 && tmp->str[0] == '&') {
dsbCopy(ret, EMAIL_DIR);
} else if (tmp->len > 0 && tmp->str[0] == '~') {
if (tmp->str[1] == '/') {
pw = getpwuid(getuid());
} else {
int pos = strfind(tmp->str, '/');
if (pos >= 0) {
char *p = substr(tmp->str, 1, pos-1);
if (p) {
pw = getpwnam(p);
xfree(p);
}
}
if (!pw) {
pw = getpwuid(getuid());
}
}
if (pw) {
dsbCopy(ret, pw->pw_dir);
}
}
if (ret->len > 0) {
int pos = strfind(tmp->str, '/');
if (pos > 0) {
char *p = substr(tmp->str, pos, tmp->len);
if (p) {
dsbCat(ret, p);
xfree(p);
}
}
} else {
dsbCopy(ret, path);
}
dsbDestroy(tmp);
return ret;
}
/**
* Reads a line from the smtp server using sgets().
* It will continue to read the response until the 4th character
* in the line is found to be a space. Per the RFC 821 this means
* that this will be the last line of response from the SMTP server
* and the appropirate return value response.
*/
static int
readResponse(dsocket *sd, dstrbuf *buf)
{
int retval=ERROR;
dstrbuf *tmpbuf = DSB_NEW;
struct timeval tv;
fd_set rfds;
char *timeout = getConfValue("TIMEOUT");
int readsize = 0;
FD_ZERO(&rfds);
FD_SET(dnetGetSock(sd), &rfds);
if (timeout) {
tv.tv_sec = atoi(timeout);
} else {
tv.tv_sec = 10;
}
tv.tv_usec = 0;
(void) select(dnetGetSock(sd)+1, &rfds, NULL, NULL, &tv);
if (FD_ISSET(dnetGetSock(sd), &rfds)) {
do {
dsbClear(tmpbuf);
readsize = dnetReadline(sd, tmpbuf);
if ((dnetErr(sd)) || (readsize <= 0)) {
smtpSetErr("Lost connection with SMTP server");
retval = ERROR;
break;
}
dsbCat(buf, tmpbuf->str);
retval = SUCCESS;
/* The last line of a response has a space in the 4th column */
} while (tmpbuf->str[3] != ' ');
} else {
smtpSetErr("Timeout(10) while trying to read from SMTP server");
retval = ERROR;
}
if (retval != ERROR) {
retval = atoi(tmpbuf->str);
}
dsbDestroy(tmpbuf);
return retval;
}
/**
* Makes a standard plain text message while taking into
* account the MIME message types and boundary's needed
* if and when a file is attached.
**/
static int
makeMessage(dstrbuf *in, dstrbuf *out, const char *border, CharSetType charset)
{
char *ptr=NULL;
dstrbuf *enc=NULL;
if (Mopts.attach) {
dsbPrintf(out, "--%s\r\n", border);
if (charset == IS_UTF8 || charset == IS_PARTIAL_UTF8) {
if (Mopts.html) {
dsbPrintf(out, "Content-Type: text/html; charset=utf-8\r\n");
} else {
dsbPrintf(out, "Content-Type: text/plain; charset=utf-8\r\n");
}
if (IS_PARTIAL_UTF8) {
dsbPrintf(out, "Content-Transfer-Encoding: quoted-printable\r\n");
enc = mimeQpEncodeString((u_char *)in->str, true);
} else {
dsbPrintf(out, "Content-Transfer-Encoding: base64\r\n");
enc = mimeB64EncodeString((u_char *)in->str, in->len, true);
}
dsbPrintf(out, "Content-Disposition: inline\r\n\r\n");
} else if (Mopts.html) {
dsbPrintf(out, "Content-Type: text/html\r\n\r\n");
enc = DSB_NEW;
dsbCat(enc, in->str);
} else {
dsbPrintf(out, "Content-Type: text/plain\r\n\r\n");
enc = DSB_NEW;
dsbCat(enc, in->str);
}
} else {
if (charset == IS_UTF8) {
enc = mimeB64EncodeString((u_char *)in->str, in->len, true);
} else if (charset == IS_PARTIAL_UTF8) {
enc = mimeQpEncodeString((u_char *)in->str, true);
} else {
enc = DSB_NEW;
dsbCat(enc, in->str);
}
}
/* Fix single dot on it's on line so we don't terminate the message prematurely. */
dstrbuf *formatted = DSB_NEW;
char previous='\0';
for (ptr = enc->str; ptr && *ptr != '\0'; previous=*ptr, ptr++) {
dsbCatChar(formatted, *ptr);
/* If we have a dot starting on a newline. */
if ((previous == '\n' || previous == '\r') && *ptr == '.') {
dsbCatChar(formatted, '.');
}
}
dsbDestroy(enc);
dsbPrintf(out, "%s\r\n", formatted->str);
if (Mopts.attach) {
if (attachFiles(border, out) == ERROR) {
return ERROR;
}
dsbPrintf(out, "\r\n\r\n--%s--\r\n", border);
}
dsbDestroy(formatted);
return 0;
}