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#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include "main.h"
/*
* Just check if the passed message is spam or not and reply as
* described below
*/
#define MSG_CMD_CHECK "check"
/*
* Check if message is spam or not, and return score plus list
* of symbols hit
*/
#define MSG_CMD_SYMBOLS "symbols"
/*
* Check if message is spam or not, and return score plus report
*/
#define MSG_CMD_REPORT "report"
/*
* Check if message is spam or not, and return score plus report
* if the message is spam
*/
#define MSG_CMD_REPORT_IFSPAM "report_ifspam"
/*
* Ignore this message -- client opened connection then changed
*/
#define MSG_CMD_SKIP "skip"
/*
* Return a confirmation that spamd is alive
*/
#define MSG_CMD_PING "ping"
/*
* Process this message as described above and return modified message
*/
#define MSG_CMD_PROCESS "process"
/*
* spamassassin greeting:
*/
#define SPAMC_GREETING "SPAMC"
/*
* rspamd greeting:
*/
#define RSPAMC_GREETING "RSPAMC"
/*
* Headers
*/
#define CONTENT_LENGTH_HEADER "Content-Length"
#define HELO_HEADER "Helo"
#define FROM_HEADER "From"
#define IP_ADDR_HEADER "IP"
#define NRCPT_HEADER "Recipient-Number"
#define RCPT_HEADER "Rcpt"
static int
parse_command (struct worker_task *task, char *line)
{
char *token;
token = strsep (&line, " ");
if (line == NULL || token == NULL) {
return -1;
}
switch (token[0]) {
case 'c':
case 'C':
/* check */
if (strcasecmp (token + 1, MSG_CMD_CHECK + 1) == 0) {
task->cmd = CMD_CHECK;
}
else {
msg_debug ("parse_command: bad comand: %s", token);
return -1;
}
break;
case 's':
case 'S':
/* symbols, skip */
if (strcasecmp (token + 1, MSG_CMD_SYMBOLS + 1) == 0) {
task->cmd = CMD_SYMBOLS;
}
else if (strcasecmp (token + 1, MSG_CMD_SKIP + 1) == 0) {
task->cmd = CMD_SKIP;
}
else {
msg_debug ("parse_command: bad comand: %s", token);
return -1;
}
break;
case 'p':
case 'P':
/* ping, process */
if (strcasecmp (token + 1, MSG_CMD_PING + 1) == 0) {
task->cmd = CMD_PING;
}
else if (strcasecmp (token + 1, MSG_CMD_PROCESS + 1) == 0) {
task->cmd = CMD_PROCESS;
}
else {
msg_debug ("parse_command: bad comand: %s", token);
return -1;
}
break;
case 'r':
case 'R':
/* report, report_ifspam */
if (strcasecmp (token + 1, MSG_CMD_REPORT + 1) == 0) {
task->cmd = CMD_REPORT;
}
else if (strcasecmp (token + 1, MSG_CMD_REPORT_IFSPAM + 1) == 0) {
task->cmd = CMD_REPORT_IFSPAM;
}
else {
msg_debug ("parse_command: bad comand: %s", token);
return -1;
}
break;
default:
msg_debug ("parse_command: bad comand: %s", token);
return -1;
}
if (strncasecmp (line, RSPAMC_GREETING, sizeof (RSPAMC_GREETING) - 1) == 0) {
task->proto = RSPAMC_PROTO;
}
else if (strncasecmp (line, SPAMC_GREETING, sizeof (SPAMC_GREETING) -1) == 0) {
task->proto = SPAMC_PROTO;
}
else {
msg_debug ("parse_command: bad protocol version: %s", line);
return -1;
}
task->state = READ_HEADER;
return 0;
}
static int
parse_header (struct worker_task *task, char *line)
{
char *headern, *err;
headern = strsep (&line, ":");
/* Check end of headers */
if (*line == '\r' && *(line + 1) == '\n') {
task->state = READ_MESSAGE;
return 0;
}
if (line == NULL || headern == NULL) {
return -1;
}
/* Eat whitespaces */
g_strstrip (line);
g_strstrip (headern);
switch (headern[0]) {
case 'c':
case 'C':
/* content-length */
if (strncasecmp (headern, CONTENT_LENGTH_HEADER, sizeof (CONTENT_LENGTH_HEADER) - 1) == 0) {
task->content_length = strtoul (line, &err, 10);
task->msg = memory_pool_alloc (task->task_pool, sizeof (f_str_buf_t));
task->msg->buf = fstralloc (task->task_pool, task->content_length);
if (task->msg->buf == NULL) {
msg_err ("read_socket: cannot allocate memory for message buffer");
return -1;
}
}
else {
msg_info ("parse_header: wrong header: %s", headern);
return -1;
}
break;
case 'h':
case 'H':
/* helo */
if (strncasecmp (headern, HELO_HEADER, sizeof (HELO_HEADER) - 1) == 0) {
task->helo = memory_pool_strdup (task->task_pool, line);
}
else {
msg_info ("parse_header: wrong header: %s", headern);
return -1;
}
break;
case 'f':
case 'F':
/* from */
if (strncasecmp (headern, FROM_HEADER, sizeof (FROM_HEADER) - 1) == 0) {
task->from = memory_pool_strdup (task->task_pool, line);
}
else {
msg_info ("parse_header: wrong header: %s", headern);
return -1;
}
break;
case 'r':
case 'R':
/* rcpt */
if (strncasecmp (headern, RCPT_HEADER, sizeof (RCPT_HEADER) - 1) == 0) {
task->rcpt = memory_pool_strdup (task->task_pool, line);
}
else {
msg_info ("parse_header: wrong header: %s", headern);
return -1;
}
break;
case 'n':
case 'N':
/* nrcpt */
if (strncasecmp (headern, NRCPT_HEADER, sizeof (NRCPT_HEADER) - 1) == 0) {
task->nrcpt = strtoul (line, &err, 10);
}
else {
msg_info ("parse_header: wrong header: %s", headern);
return -1;
}
break;
case 'i':
case 'I':
/* ip_addr */
if (strncasecmp (headern, IP_ADDR_HEADER, sizeof (IP_ADDR_HEADER) - 1) == 0) {
if (!inet_aton (line, &task->from_addr)) {
msg_info ("parse_header: bad ip header: '%s'", line);
return -1;
}
}
else {
msg_info ("parse_header: wrong header: %s", headern);
return -1;
}
break;
default:
msg_info ("parse_header: wrong header: %s", headern);
return -1;
}
return 0;
}
int
read_rspamd_input_line (struct worker_task *task, char *line)
{
switch (task->state) {
case READ_COMMAND:
return parse_command (task, line);
break;
case READ_HEADER:
return parse_header (task, line);
break;
}
}
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