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Diffstat (limited to 'plugins/check_http.c')
-rw-r--r--plugins/check_http.c255
1 files changed, 158 insertions, 97 deletions
diff --git a/plugins/check_http.c b/plugins/check_http.c
index 6d521096..b9032d16 100644
--- a/plugins/check_http.c
+++ b/plugins/check_http.c
@@ -79,11 +79,6 @@ int errcode;
struct timeval tv;
-#define server_type_check(server_type) \
-(strcmp (server_type, "https") ? FALSE : TRUE)
-
-#define server_port_check(use_ssl) (use_ssl ? HTTPS_PORT : HTTP_PORT)
-
#define HTTP_URL "/"
#define CRLF "\r\n"
@@ -110,13 +105,18 @@ int use_ssl = FALSE;
int verbose = FALSE;
int sd;
int min_page_len = 0;
+int redir_depth = 0;
+int max_depth = 15;
char *http_method;
char *http_post_data;
char buffer[MAX_INPUT_BUFFER];
int process_arguments (int, char **);
-static char *base64 (char *bin, size_t len);
+static char *base64 (const char *bin, size_t len);
int check_http (void);
+int redir (char *pos, char *status_line);
+int server_type_check(const char *type);
+int server_port_check(int ssl_flag);
int my_recv (void);
int my_close (void);
void print_help (void);
@@ -409,7 +409,7 @@ process_arguments (int argc, char **argv)
/* written by lauri alanko */
static char *
-base64 (char *bin, size_t len)
+base64 (const char *bin, size_t len)
{
char *buf = (char *) malloc ((len + 2) / 3 * 4 + 1);
@@ -450,17 +450,7 @@ base64 (char *bin, size_t len)
-/* per RFC 2396 */
-#define HDR_LOCATION "%*[Ll]%*[Oo]%*[Cc]%*[Aa]%*[Tt]%*[Ii]%*[Oo]%*[Nn]: "
-#define URI_HTTP "%[HTPShtps]://"
-#define URI_HOST "%[-.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789]"
-#define URI_PORT ":%[0123456789]"
-#define URI_PATH "%[-_.!~*'();/?:@&=+$,%#abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789]"
-#define HD1 URI_HTTP URI_HOST URI_PORT URI_PATH
-#define HD2 URI_HTTP URI_HOST URI_PATH
-#define HD3 URI_HTTP URI_HOST URI_PORT
-#define HD4 URI_HTTP URI_HOST
-#define HD5 URI_PATH
+
int
check_http (void)
@@ -475,9 +465,6 @@ check_http (void)
char *full_page;
char *buf;
char *pos;
- char *x;
- char xx[2];
- char *orig_url;
long microsec;
double elapsed_time;
int page_len = 0;
@@ -490,7 +477,7 @@ check_http (void)
if (use_ssl == TRUE) {
if (connect_SSL () != OK) {
- die (STATE_CRITICAL, _("Unable to open TCP socket"));
+ die (STATE_CRITICAL, _("Unable to open TCP socket\n"));
}
if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) {
@@ -505,7 +492,7 @@ check_http (void)
else {
#endif
if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK)
- die (STATE_CRITICAL, _("Unable to open TCP socket"));
+ die (STATE_CRITICAL, _("Unable to open TCP socket\n"));
#ifdef HAVE_SSL
}
#endif
@@ -566,12 +553,12 @@ check_http (void)
if ( sslerr == SSL_ERROR_SSL ) {
die (STATE_WARNING, _("Client Certificate Required\n"));
} else {
- die (STATE_CRITICAL, _("Error in recv()"));
+ die (STATE_CRITICAL, _("Error in recv()\n"));
}
}
else {
#endif
- die (STATE_CRITICAL, _("Error in recv()"));
+ die (STATE_CRITICAL, _("Error in recv()\n"));
#ifdef HAVE_SSL
}
#endif
@@ -579,7 +566,7 @@ check_http (void)
/* return a CRITICAL status if we couldn't read any data */
if (pagesize == (size_t) 0)
- die (STATE_CRITICAL, _("No data received %s"), timestamp);
+ die (STATE_CRITICAL, _("No data received %s\n"), timestamp);
/* close the connection */
my_close ();
@@ -668,78 +655,9 @@ check_http (void)
strstr (status_line, "302") || strstr (status_line, "303") ||
strstr (status_line, "304") || strstr (status_line, "305") ||
strstr (status_line, "306")) {
- if (onredirect == STATE_DEPENDENT) {
-
- server_address = realloc (server_address, MAX_IPV4_HOSTLENGTH + 1);
- if (server_address == NULL)
- die (STATE_UNKNOWN,_("ERROR: could not allocate server_address"));
-
- asprintf (&orig_url, "%s", server_url);
- if (strcspn (pos, "\r\n") > (size_t)server_url_length) {
- server_url = realloc (server_url, strcspn (pos, "\r\n"));
- if (server_url == NULL)
- die (STATE_UNKNOWN, _("ERROR: could not allocate server_url"));
- server_url_length = strcspn (pos, "\r\n");
- }
- pos = header;
- while (pos) {
- if (sscanf (pos, "%[Ll]%*[Oo]%*[Cc]%*[Aa]%*[Tt]%*[Ii]%*[Oo]%*[Nn]:%n", xx, &i) > 0) {
- pos += i;
- pos += strspn (pos, " \t\r\n");
- } else {
- pos += (size_t) strcspn (pos, "\r\n");
- pos += (size_t) strspn (pos, "\r\n");
- continue;
- }
- /* HDR_LOCATION, URI_HTTP, URI_HOST, URI_PORT, URI_PATH */
- if (sscanf (pos, HD1, server_type, server_address, server_port_text, server_url) == 4) {
- if (host_name != NULL) free(host_name);
- host_name = strdup(server_address);
- use_ssl = server_type_check (server_type);
- server_port = atoi (server_port_text);
- check_http ();
- }
- /* HDR_LOCATION URI_HTTP URI_HOST URI_PATH */
- else if (sscanf (pos, HD2, server_type, server_address, server_url) == 3 ) {
- if (host_name != NULL) free(host_name);
- host_name = strdup(server_address);
- use_ssl = server_type_check (server_type);
- server_port = server_port_check (use_ssl);
- check_http ();
- }
- /* HDR_LOCATION URI_HTTP URI_HOST URI_PORT */
- else if(sscanf (pos, HD3, server_type, server_address, server_port_text) == 3) {
- if (host_name != NULL) free(host_name);
- host_name = strdup(server_address);
- strcpy (server_url, "/");
- use_ssl = server_type_check (server_type);
- server_port = atoi (server_port_text);
- check_http ();
- }
- /* HDR_LOCATION URI_HTTP URI_HOST */
- else if(sscanf (pos, HD4, server_type, server_address) == 2) {
- if (host_name != NULL) free(host_name);
- host_name = strdup(server_address);
- strcpy (server_url, "/");
- use_ssl = server_type_check (server_type);
- server_port = server_port_check (use_ssl);
- check_http ();
- }
- /* HDR_LOCATION URI_PATH */
- else if (sscanf (pos, HD5, server_url) == 1) {
- if ((server_url[0] != '/') && (x = strrchr(orig_url, '/'))) {
- *x = '\0';
- asprintf (&server_url, "%s/%s", orig_url, server_url);
- }
- check_http ();
- }
- } /* end while (pos) */
- printf (_("UNKNOWN - Could not find redirect location - %s%s"),
- status_line, (display_html ? "</A>" : ""));
- exit (STATE_UNKNOWN);
- } /* end if (onredirect == STATE_DEPENDENT) */
-
+ if (onredirect == STATE_DEPENDENT)
+ redir (header, status_line);
else if (onredirect == STATE_UNKNOWN)
printf (_("UNKNOWN"));
else if (onredirect == STATE_OK)
@@ -828,6 +746,149 @@ check_http (void)
+
+/* per RFC 2396 */
+#define HDR_LOCATION "%*[Ll]%*[Oo]%*[Cc]%*[Aa]%*[Tt]%*[Ii]%*[Oo]%*[Nn]: "
+#define URI_HTTP "%[HTPShtps]://"
+#define URI_HOST "%[-.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789]"
+#define URI_PORT ":%[0123456789]"
+#define URI_PATH "%[-_.!~*'();/?:@&=+$,%#abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789]"
+#define HD1 URI_HTTP URI_HOST URI_PORT URI_PATH
+#define HD2 URI_HTTP URI_HOST URI_PATH
+#define HD3 URI_HTTP URI_HOST URI_PORT
+#define HD4 URI_HTTP URI_HOST
+#define HD5 URI_PATH
+
+int
+redir (char *pos, char *status_line)
+{
+ int i = 0;
+ char *x;
+ char xx[2];
+ char type[6];
+ char *addr;
+ char port[6];
+ char *url;
+
+ addr = malloc (MAX_IPV4_HOSTLENGTH + 1);
+ if (addr == NULL)
+ die (STATE_UNKNOWN, _("ERROR: could not allocate addr\n"));
+
+ url = malloc (strcspn (pos, "\r\n"));
+ if (url == NULL)
+ die (STATE_UNKNOWN, _("ERROR: could not allocate url\n"));
+
+ while (pos) {
+
+ if (sscanf (pos, "%[Ll]%*[Oo]%*[Cc]%*[Aa]%*[Tt]%*[Ii]%*[Oo]%*[Nn]:%n", xx, &i) > 0) {
+
+ pos += i;
+ pos += strspn (pos, " \t\r\n");
+
+ /* URI_HTTP, URI_HOST, URI_PORT, URI_PATH */
+ if (sscanf (pos, HD1, type, addr, port, url) == 4) {
+ use_ssl = server_type_check (type);
+ i = atoi (port);
+ }
+
+ /* URI_HTTP URI_HOST URI_PATH */
+ else if (sscanf (pos, HD2, type, addr, url) == 3 ) {
+ use_ssl = server_type_check (type);
+ i = server_port_check (use_ssl);
+ }
+
+ /* URI_HTTP URI_HOST URI_PORT */
+ else if(sscanf (pos, HD3, type, addr, port) == 3) {
+ strcpy (url, HTTP_URL);
+ use_ssl = server_type_check (type);
+ i = atoi (port);
+ }
+
+ /* URI_HTTP URI_HOST */
+ else if(sscanf (pos, HD4, type, addr) == 2) {
+ strcpy (url, HTTP_URL);
+ use_ssl = server_type_check (type);
+ i = server_port_check (use_ssl);
+ }
+
+ /* URI_PATH */
+ else if (sscanf (pos, HD5, url) == 1) {
+ /* relative url */
+ if ((url[0] != '/')) {
+ if (x = strrchr(url, '/'))
+ *x = '\0';
+ asprintf (&server_url, "%s/%s", server_url, url);
+ }
+ i = server_port;
+ strcpy (type, server_type);
+ strcpy (addr, host_name);
+ }
+
+ else {
+ die (STATE_UNKNOWN,
+ _("UNKNOWN - Could not parse redirect location - %s%s\n"),
+ pos, (display_html ? "</A>" : ""));
+ }
+
+ break;
+
+ } else {
+
+ pos += (size_t) strcspn (pos, "\r\n");
+ pos += (size_t) strspn (pos, "\r\n");
+ if (strlen(pos) == 0)
+ die (STATE_UNKNOWN,
+ _("UNKNOWN - Could not find redirect location - %s%s\n"),
+ status_line, (display_html ? "</A>" : ""));
+
+ }
+
+ } /* end while (pos) */
+
+ if (++redir_depth > max_depth)
+ die (STATE_WARNING,
+ _("WARNING - maximum redirection depth %d exceeded - %s://%s:%d%s%s\n"),
+ max_depth, type, addr, i, url, (display_html ? "</A>" : ""));
+
+ if (server_port==i &&
+ !strcmp(server_address, addr) &&
+ (host_name && !strcmp(host_name, addr)) &&
+ !strcmp(server_url, url))
+ die (STATE_WARNING,
+ _("WARNING - redirection creates an infinite loop - %s://%s:%d%s%s\n"),
+ type, addr, i, url, (display_html ? "</A>" : ""));
+
+ server_port = i;
+ strcpy (server_type, type);
+ asprintf (&host_name, "%s", addr);
+ asprintf (&server_address, "%s", addr);
+ asprintf (&server_url, "%s", url);
+
+ return check_http ();
+}
+
+
+
+int
+server_type_check (const char *type)
+{
+ if (strcmp (type, "https"))
+ return FALSE;
+ else
+ return TRUE;
+}
+
+int
+server_port_check (int ssl_flag)
+{
+ if (ssl_flag)
+ return HTTPS_PORT;
+ else
+ return HTTP_PORT;
+}
+
+
+
#ifdef HAVE_SSL
int connect_SSL (void)
{
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 07:15:40 +0000