-/* @(#) $Id: ./src/client-agent/receiver.c, 2011/09/08 dcid Exp $
- */
-
/* Copyright (C) 2009 Trend Micro Inc.
* All right reserved.
*
* Foundation
*/
-
#include "shared.h"
-
-
#ifdef WIN32
#include "os_execd/execd.h"
#endif
-
-
#include "os_crypto/md5/md5_op.h"
#include "os_net/os_net.h"
-
-
#include "agentd.h"
-FILE *fp = NULL;
-char file_sum[34] = "";
-char file[OS_SIZE_1024 +1] = "";
+/* Global variables */
+static FILE *fp = NULL;
+static char file_sum[34] = "";
+static char file[OS_SIZE_1024 + 1] = "";
-/* receive_msg:
- * Receive events from the server.
- */
+/* Receive events from the server */
void *receive_msg()
{
- int recv_b;
-
- char buffer[OS_MAXSTR +1];
-
+ ssize_t recv_b;
+ char buffer[OS_MAXSTR + 1];
char cleartext[OS_MAXSTR + 1];
char *tmp_msg;
-
- memset(cleartext, '\0', OS_MAXSTR +1);
- memset(buffer, '\0', OS_MAXSTR +1);
-
-
+ memset(cleartext, '\0', OS_MAXSTR + 1);
+ memset(buffer, '\0', OS_MAXSTR + 1);
/* Read until no more messages are available */
- while((recv_b = recv(agt->sock, buffer, OS_SIZE_1024, MSG_DONTWAIT)) > 0)
- {
+ while ((recv_b = recv(agt->sock, buffer, OS_SIZE_1024, MSG_DONTWAIT)) > 0) {
buffer[recv_b] = '\0';
- tmp_msg = ReadSecMSG(&keys, buffer, cleartext, 0, recv_b -1);
- if(tmp_msg == NULL)
- {
- merror(MSG_ERROR,ARGV0,agt->rip[agt->rip_id]);
+ tmp_msg = ReadSecMSG(&keys, buffer, cleartext, 0, recv_b - 1);
+ if (tmp_msg == NULL) {
+ merror(MSG_ERROR, ARGV0, agt->rip[agt->rip_id]);
continue;
}
-
/* Check for commands */
- if(IsValidHeader(tmp_msg))
- {
+ if (IsValidHeader(tmp_msg)) {
available_server = (int)time(NULL);
-
- #ifdef WIN32
- /* Run timeout commands. */
- if(agt->execdq >= 0)
+#ifdef WIN32
+ /* Run timeout commands */
+ if (agt->execdq >= 0) {
WinTimeoutRun(available_server);
- #endif
-
+ }
+#endif
/* If it is an active response message */
- if(strncmp(tmp_msg, EXECD_HEADER, strlen(EXECD_HEADER)) == 0)
- {
- tmp_msg+=strlen(EXECD_HEADER);
-
- #ifndef WIN32
- if(agt->execdq >= 0)
- {
- if(OS_SendUnix(agt->execdq, tmp_msg, 0) < 0)
- {
+ if (strncmp(tmp_msg, EXECD_HEADER, strlen(EXECD_HEADER)) == 0) {
+ tmp_msg += strlen(EXECD_HEADER);
+#ifndef WIN32
+ if (agt->execdq >= 0) {
+ if (OS_SendUnix(agt->execdq, tmp_msg, 0) < 0) {
merror("%s: Error communicating with execd",
- ARGV0);
+ ARGV0);
}
}
-
- #else
-
-
- /* Run on windows. */
- if(agt->execdq >= 0)
- {
+#else
+ /* Run on Windows */
+ if (agt->execdq >= 0) {
WinExecdRun(tmp_msg);
}
-
- #endif
-
+#endif
continue;
}
-
- /* Restart syscheck. */
- else if(strcmp(tmp_msg, HC_SK_RESTART) == 0)
- {
+ /* Restart syscheck */
+ else if (strcmp(tmp_msg, HC_SK_RESTART) == 0) {
os_set_restart_syscheck();
continue;
}
-
/* Ack from server */
- else if(strcmp(tmp_msg, HC_ACK) == 0)
- {
+ else if (strcmp(tmp_msg, HC_ACK) == 0) {
continue;
}
-
/* Close any open file pointer if it was being written to */
- if(fp)
- {
+ if (fp) {
fclose(fp);
fp = NULL;
}
-
/* File update message */
- if(strncmp(tmp_msg, FILE_UPDATE_HEADER,
- strlen(FILE_UPDATE_HEADER)) == 0)
- {
+ if (strncmp(tmp_msg, FILE_UPDATE_HEADER,
+ strlen(FILE_UPDATE_HEADER)) == 0) {
char *validate_file;
tmp_msg += strlen(FILE_UPDATE_HEADER);
/* Going to after the file sum */
validate_file = strchr(tmp_msg, ' ');
- if(!validate_file)
- {
+ if (!validate_file) {
continue;
}
*validate_file = '\0';
- /* copying the file sum */
+ /* Copy the file sum */
strncpy(file_sum, tmp_msg, 33);
-
- /* Setting tmp_msg to the beginning of the file name */
+ /* Set tmp_msg to the beginning of the file name */
validate_file++;
tmp_msg = validate_file;
-
- if((validate_file = strchr(tmp_msg, '\n')) != NULL)
- {
+ if ((validate_file = strchr(tmp_msg, '\n')) != NULL) {
*validate_file = '\0';
}
- while((validate_file = strchr(tmp_msg, '/')) != NULL)
- {
+ while ((validate_file = strchr(tmp_msg, '/')) != NULL) {
*validate_file = '-';
}
- if(tmp_msg[0] == '.')
+ if (tmp_msg[0] == '.') {
tmp_msg[0] = '-';
-
+ }
snprintf(file, OS_SIZE_1024, "%s/%s",
- SHAREDCFG_DIR,
- tmp_msg);
-
+ SHAREDCFG_DIR,
+ tmp_msg);
fp = fopen(file, "w");
- if(!fp)
- {
- merror(FOPEN_ERROR, ARGV0, file);
+ if (!fp) {
+ merror(FOPEN_ERROR, ARGV0, file, errno, strerror(errno));
}
}
- else if(strncmp(tmp_msg, FILE_CLOSE_HEADER,
- strlen(FILE_CLOSE_HEADER)) == 0)
- {
- /* no error */
+ else if (strncmp(tmp_msg, FILE_CLOSE_HEADER,
+ strlen(FILE_CLOSE_HEADER)) == 0) {
+ /* No error */
os_md5 currently_md5;
- /* Making sure to close for the rename to work */
- if(fp)
- {
+ /* Close for the rename to work */
+ if (fp) {
fclose(fp);
fp = NULL;
}
- if(file[0] == '\0')
- {
- /* nada */
+ if (file[0] == '\0') {
+ /* Nothing to be done */
}
- else if(OS_MD5_File(file, currently_md5) < 0)
- {
- /* Removing file */
+ else if (OS_MD5_File(file, currently_md5, OS_TEXT) < 0) {
+ /* Remove file */
unlink(file);
file[0] = '\0';
- }
- else
- {
- if(strcmp(currently_md5, file_sum) != 0)
- {
+ } else {
+ if (strcmp(currently_md5, file_sum) != 0) {
debug1("%s: ERROR: Failed md5 for: %s -- deleting.",
- ARGV0, file);
+ ARGV0, file);
unlink(file);
- }
- else
- {
+ } else {
char *final_file;
- /* Renaming the file to its orignal name */
+ /* Rename the file to its original name */
final_file = strrchr(file, '/');
- if(final_file)
- {
- if(strcmp(final_file + 1, SHAREDCFG_FILENAME) == 0)
- {
+ if (final_file) {
+ if (strcmp(final_file + 1, SHAREDCFG_FILENAME) == 0) {
UnmergeFiles(file, SHAREDCFG_DIR);
}
- }
- else
- {
- /* Removing file. */
+ } else {
+ /* Remove file */
unlink(file);
}
}
}
}
- else
- {
+ else {
merror("%s: WARN: Unknown message received from server.", ARGV0);
}
}
- else if(fp)
- {
+ else if (fp) {
available_server = (int)time(NULL);
fprintf(fp, "%s", tmp_msg);
}
- else
- {
+ else {
merror("%s: WARN: Unknown message received. No action defined.",
- ARGV0);
+ ARGV0);
}
}
-
- return(NULL);
-
+ return (NULL);
}
-
-/* EOF */
projects / ossec-hids.git / blobdiff