commit ff5c4205827063dd6b774d34bb2809aa68bfdbd0
parent ed00a3834b572690a239fff48f09e54e73682fcf
Author: Markus Hanetzok <markus@hanetzok.net>
Date: Fri, 7 Nov 2025 20:47:11 +0100
add auto-refresh
Diffstat:
| M | sds.c | | | 28 | ++++++++++++++-------------- |
1 file changed, 14 insertions(+), 14 deletions(-)
diff --git a/sds.c b/sds.c
@@ -1,4 +1,4 @@
-/*
+/*
Copyright 2024 Markus Hanetzok
This program is free software: you can redistribute it and/or modify it under
@@ -11,7 +11,7 @@
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, see <https://www.gnu.org/licenses/>.
+ this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <ctype.h>
@@ -24,10 +24,10 @@
#include <sys/socket.h>
-#define BUFFER_SIZE 1024
-#define OK_HEADER "HTTP/1.0 200 OK\r\nContent-Type:text/html\r\n\r\n"
-#define NOTFOUND_HEADER "HTTP/1.0 404 Not Found\r\nContent-Type:text/html\r\n\r\n"
-#define NOTALLOWED_HEADER "HTTP/1.0 405 Method Not Allowed\r\nContent-Type:text/html\r\n\r\n"
+#define BUFFER_SIZE 1024
+#define OK_HEADER "HTTP/1.0 200 OK\r\nContent-Type:text/html\r\n\r\n"
+#define NOTFOUND_HEADER "HTTP/1.0 404 Not Found\r\nContent-Type:text/html\r\n\r\n"
+#define NOTALLOWED_HEADER "HTTP/1.0 405 Method Not Allowed\r\nContent-Type:text/html\r\n\r\n"
#define INTERNALERR_HEADER "HTTP/1.0 500 Internal Server Error\r\nContent-Type:text/html\r\n\r\n"
typedef struct {
@@ -53,7 +53,7 @@ void writeresponse(char response[], int clientfd, size_t responselen);
#include "sensors.h"
void buildsite(char response[], char *name, char *val, char *unit) {
- snprintf(response + strlen(response), BUFFER_SIZE - strlen(response),
+ snprintf(response + strlen(response), BUFFER_SIZE - strlen(response),
"<li>%s: %s%s</li>", name, val, unit);
}
@@ -96,26 +96,26 @@ int main(int argc, char *argv[]) {
struct sockaddr_in client_addr;
int client_addrlen = sizeof(client_addr);
- if (bind(sockfd, (struct sockaddr *)&host_addr, host_addrlen) != 0)
+ if (bind(sockfd, (struct sockaddr *)&host_addr, host_addrlen) != 0)
die("could not bind socket");
if (listen(sockfd, 10) != 0)
die("could not listen");
while(1) {
- int clientfd = accept(sockfd, (struct sockaddr *)&host_addr,
+ int clientfd = accept(sockfd, (struct sockaddr *)&host_addr,
(socklen_t *)&host_addrlen);
if (clientfd < 0) {
fprintf(stderr, "could not accept connection\n");
continue;
}
- getpeername(clientfd, (struct sockaddr *)&client_addr,
+ getpeername(clientfd, (struct sockaddr *)&client_addr,
(socklen_t *)&client_addrlen);
memset(buffer, 0, BUFFER_SIZE);
read(clientfd, buffer, BUFFER_SIZE);
char method[BUFFER_SIZE], uri[BUFFER_SIZE], version[BUFFER_SIZE];
sscanf(buffer, "%s %s %s", method, uri, version);
- printf("[%s:%u] %s %s %s\n", inet_ntoa(client_addr.sin_addr),
+ printf("[%s:%u] %s %s %s\n", inet_ntoa(client_addr.sin_addr),
ntohs(client_addr.sin_port), method, version, uri);
memset(response, 0, BUFFER_SIZE);
@@ -134,8 +134,8 @@ int main(int argc, char *argv[]) {
writeresponse(response, clientfd, strlen(response));
continue;
}
- snprintf(response + strlen(response), BUFFER_SIZE - strlen(response),
- "%s%s", OK_HEADER, "<html><h1>Sensor data</h1><ul>");
+ snprintf(response + strlen(response), BUFFER_SIZE - strlen(response),
+ "%s%s", OK_HEADER, "<html><head><meta http-equiv=\"refresh\" content=\"30\"></head><h1>Sensor data</h1><ul>");
int sensorsc = sizeof(sensors)/sizeof(sensors[0]);
int i;
for (i = 0; i < sensorsc; i++) {
@@ -171,7 +171,7 @@ int main(int argc, char *argv[]) {
curl_easy_cleanup(curl);
}
- snprintf(response + strlen(response), BUFFER_SIZE - strlen(response),
+ snprintf(response + strlen(response), BUFFER_SIZE - strlen(response),
"</ul></html>");
writeresponse(response, clientfd, strlen(response));
